WO2020066566A1 - Chuck apparatus - Google Patents
Chuck apparatus Download PDFInfo
- Publication number
- WO2020066566A1 WO2020066566A1 PCT/JP2019/035337 JP2019035337W WO2020066566A1 WO 2020066566 A1 WO2020066566 A1 WO 2020066566A1 JP 2019035337 W JP2019035337 W JP 2019035337W WO 2020066566 A1 WO2020066566 A1 WO 2020066566A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- safety pin
- jaw
- chuck device
- plunger
- wedge plunger
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
Definitions
- the present invention relates to a chuck device capable of automatically exchanging jaws using an automatic jaw exchanging device.
- Patent Documents 1 and 2 disclose chuck devices that are configured such that the jaws can be replaced by pulling the jaws outward from the outer end side of the jaw mounting portion.
- the present invention has been made to solve the above problems, and provides a chuck device that prevents a jaw from coming out of a jaw mounting portion without inviting a complicated and large-sized automatic jaw changing device. It is.
- a chuck device including a plurality of jaws for gripping a workpiece, a chuck body, a wedge plunger, and a safety pin, wherein the chuck body moves the plurality of jaws closer to each other. And a plurality of jaw mounting portions radially mounted on the front side for slidably mounting between the chuck body and the chuck body in a state where the jaws are cam-connected to the jaws.
- the jaw is slid inward and outward by sliding in the front-rear direction in a plunger slide space provided inside, so that the connection and release of the cam connection are switched with the sliding of the wedge plunger.
- the safety pin is slidable in the front-rear direction and the chuck is
- the wedge plunger is housed inside the slide, and along with the slide of the wedge plunger, a position between a retaining position for preventing the jaw from coming out of the jaw mounting portion and a retaining release position for preventing the jaw from being released.
- a safety pin is configured to slide, and the safety pin is configured to slide from the retaining position to the retaining release position when the wedge plunger slides in a direction in which the cam connection is released,
- a chuck device is provided.
- the jaws can be prevented from coming off by disposing the safety pin at the retaining position. Further, since the safety pin slides along with the sliding of the wedge plunger, a device for sliding the safety pin is unnecessary, and the jaw automatic exchanging device does not become complicated or large.
- the cam connection is maintained, and the jaw is attached to the jaw mounting portion.
- the cam connection is released, and the jaw is mounted without interference of the jaw with the wedge plunger.
- the wedge plunger is present in the front section, the safety pin is located at the retaining position, and the safety pin is located in the front section from the front section to the rear section.
- the slide Emissions is configured to slide until stopper release position wherein a chuck device.
- a rear pressing portion P1 for pressing the safety pin rearward is provided on the wedge plunger or another member integrally fixed to the wedge plunger.
- the rear pressed portion P2 pressed by the portion P1 is provided on the safety pin or another member integrally fixed thereto, and when the wedge plunger is in the front section, the rear pressed portion P1 and the When the rear pressed portion P2 is not in contact with the safety pin is located at the retaining position and the wedge plunger slides from the front section to the rear section, the rear pressing section P1 is The safety pin is brought into contact with the rear pressed portion P2 from the front and presses the rear pressed portion P2 rearward directly or via another member, whereby the safety pin is moved. Configured to serial retaining the slide to the release position, a chuck device.
- the front end of the safety pin is inserted into a safety pin insertion recess provided on a rear surface side of the jaw, and in the retaining release position, A chuck device wherein a front end of the safety pin is not inserted into the safety pin insertion recess.
- the safety pin is provided at a safety pin main body, a rear shaft extending rearward from a rear end surface of the safety pin main body, and a rear end of the rear shaft.
- the wedge plunger is provided behind the cam connecting portion and the cam connecting portion that is cam-connected to the jaw, and the rear shaft portion of the safety pin is inserted.
- a chuck device including a wedge plunger main body.
- the chuck device described above is provided with a safety pin front urging member for urging the safety pin forward.
- the safety pin is configured to slide to a retaining position with the slide. It is a chuck device.
- a front pressing part Q1 for pressing the safety pin forward is provided on the wedge plunger or another member integrally fixed thereto, and the front pressing part Q1 is provided.
- the front pressing portion Q1 abuts against the front pressed portion Q2 from behind directly or via another member to press the front pressed portion Q2 forward, whereby the safety pin reaches the retaining position.
- a chuck device configured to slide.
- the chuck device described above further comprising a safety pin holding unit, wherein the safety pin holding unit is configured to be able to hold the safety pin at the retaining position, and the wedge plunger holds the safety pin.
- a chuck device configured to release the holding of the safety pin at the retaining position when sliding backward.
- a plurality of jaw mounting portions for slidably mounting a plurality of jaws for gripping a work between an inner position close to each other and an outer position separated from each other are radially provided on a front side of the chuck body.
- a wedge plunger that is cam-coupled to the jaw attached to the jaw attachment portion, slides in the front-rear direction in a plunger slide space provided inside the chuck body, and thereby slides the jaw in and out.
- a chuck device that is in a state, A safety pin that is inserted into the safety pin insertion recess provided on the rear side of the jaw and prevents the jaw from coming out of the jaw mounting portion is housed inside the chuck body in a state that it can slide in the front-rear direction.
- Rear pressing part P 1 for pressing the safety pin backwards is provided in the wedge plunger
- Rear pressed portion P 2 which is pressed by the rear pressing portion P 1 is provided in the safety pin
- the rear pressed portion P 2 at the rear behind the pressing portion P 1 abuts against the front relative to the rear pressed portion P 2
- a chuck device is provided in which the safety pin is slid to a retaining release position where the front end of the safety pin comes out of the safety pin insertion recess by pressing.
- FIG. 1 A view showing a chucking device of the first embodiment, the wedge plunger is slid rearward section from the front section of the plunger slide space, and the rear pressing portion P 1 and rear pressed portion P 2 is in contact with It is the figure which showed the state of the moment.
- FIG. 1 A view showing a chucking device of the first embodiment, the wedge plunger is slid rearward section from the front section of the plunger slide space, and the rear pressing portion P 1 and rear pressed portion P 2 is in contact with It is the figure which showed the state of the moment.
- FIG. 5 is a view showing the chuck device of the first embodiment, showing a state in which the wedge plunger is slid to the retreat end position of the rear section in the plunger slide space, and the safety pin is prevented from coming off the jaw. is there. It is a figure showing the chuck device of a 2nd embodiment, and showing the state where the wedge plunger was slid to the retreat end position of the back section in the slide space for plungers. It is the figure which showed the chuck apparatus of 2nd embodiment, and showed the state which made the wedge plunger slide to the front side section in the slide space for plungers, and made the safety pin slide to the retaining position.
- FIG. 1 to 4 are views showing a chuck device 10 according to a first embodiment.
- 1 shows a state in which the chuck device 10 with the jaw 30 attached is viewed from the front side
- FIG. 2 shows a state in which the jaw 30 attached to the jaw attachment portion 11a grips the workpiece W
- FIG. 3 shows a plunger.
- wedge plunger 15 is slid to the rear section S 2 from the front section S 1 of the use slide space alpha, the moment when the rear pressing portion P 1 and rear pressed portion P 2 is in contact state
- FIG. 4 is a sectional view taken along a plane including the center line L 1 of the chuck device 10, the center line L 1 illustrates only one side (upper side).
- the chuck device 10 includes a chuck body 11, a wedge plunger 15, and a safety pin 16, as shown in FIG.
- the wedge plunger 15 is housed in a plunger slide space ⁇ provided inside the chuck body 11.
- the wedge plunger 15 forms a plunger portion together with the member 22 and the like, and is connected to a cylinder device (not shown) provided behind the chuck device 10 via a draw pipe or the like (not shown). By driving this cylinder device, the wedge plunger 15 can be slid in the front-rear direction within the plunger slide space ⁇ .
- the wedge plunger 15 is connected to a cam connecting portion 15b, a wedge plunger body 15c. It consists of.
- the cam connecting portion 15b is a portion provided with the cam ridge 15a, and is a portion which is cam-connected to the jaw 30 as described later.
- the wedge plunger main body 15c is a part provided behind the cam connecting part 15b, and is a part through which a rear shaft part 16b of the safety pin 16 described later is inserted.
- Chuck body 11 by an unillustrated rotary drive mechanism (motor etc.), and is capable of rotating around the center line L 1.
- the front surface of the chuck body 11, as shown in FIG. 1, the jaw attachment portion 11a of the plurality of (three in the figure) is provided radially around the center line L 1.
- the jaw attachment portion 11a in rotational symmetry (rotational symmetry around the center line L 1).
- a jaw 30 is attached to each jaw attachment portion 11a. These jaws 30 are adapted to be able to slide in and out along the respective jaw mounting portion 11a (the radial direction around the center line L 1).
- each jaw mounting portion 11a Sliding plurality of jaws 30 inwardly along each of the jaw mounting portion 11a (a direction to approach the center line L 1), while the plurality of jaws 30 approach each other, each jaw mounting portion a plurality of jaws 30 sliding outward (direction away from the center line L 1) along the 11a, so that the plurality of jaws 30 away from each other.
- the jaw attachment portion 11a is formed by a groove.
- the groove (jaw mount portion 11a), the jaws 30 are adapted to fit the radial jaws 30 around the inner and outer direction (center line L 1 by the recessed groove (the jaw attachment portion 11a) ).
- the jaw 30 is configured by the soft jaw 31 that contacts the workpiece W and the master jaw 32 that is connected to the rear surface side of the soft jaw 31.
- the master jaw 32 is fitted and guided in the concave groove (jaw mounting portion 11a).
- a cam groove 32a is provided on a side surface of the master jaw 32 constituting each jaw 30.
- the cam groove 32a is fitted (cam-coupled) to the cam ridge 15a of the wedge plunger 15.
- Both cam projections 15a of the cam groove 32a and the wedge plunger 15 of the master jaw 32 is provided in a state of being inclined with respect to the center line L 1. Therefore, when the wedge plunger 15 is slid in the front-rear direction in the plunger slide space ⁇ , the movement in the front-rear direction is converted into the movement in the inside and outside directions by the cam mechanism including the cam groove 32a and the cam ridge 15a. , The jaws 30 slide inward and outward.
- the chuck device 10 of the first embodiment is capable of automatically exchanging the jaws 30 with a jaw automatic exchanging device substantially similar to that disclosed in Patent Document 1.
- the jaw attachment portion 11a is provided until it reaches the outer peripheral portion of the chuck body 11, and the jaw 30 attached to the jaw attachment portion 11a can be pulled outward from the outer end of the jaw attachment portion 11a.
- the operation of pulling out the jaw 30 from the jaw mounting portion 11a is performed by an automatic jaw changing device.
- the master jaw 32 of the jaw 30 is in a state where the cam groove 32a provided in the jaw 30 is fitted to the cam ridge 15a of the wedge plunger 15 (the state in which the jaw 30 and the wedge plunger 15 are cam-connected).
- the jaw 30 cannot be pulled out from the jaw mounting portion 11a in this state.
- a front section S 1 in the plunger slide space ⁇ (a section where the cam groove 32a of the master jaw 32 and the cam ridge 15a of the wedge plunger 15 are fitted.
- the position of the rear end face of the wedge plunger 15 is used as a reference. a although the wedge plunger 15 shows a front section S 1.) slides, when replacing the jaw 30 mounted to the chuck device 10, as shown in FIGS.
- the slide space ⁇ plunger in S 2 (each figure rear section in, shows the rear section S 2 on the basis of the position of the rear end face of the wedge plunger 15
- the engagement between the cam groove 32a of the master jaw 32 and the cam ridge 15a of the wedge plunger 15 is released (the cam connection between the jaw 30 and the wedge plunger 15 is released).
- the connection and release of the cam connection are switched as the wedge plunger 15 slides. This prevents the wedge plunger 15 from interfering with the jaw 30 when the jaw 30 attached to the chuck body 11 is pulled out from the outer end of the jaw attachment portion 11a using the automatic jaw changing device. Is possible.
- a safety pin 16 is attached to the chuck body 11, and a front end of the safety pin 16 is provided on a rear surface side of the jaw 30. It is designed to be inserted into the insertion recess 32b.
- the safety pin 16 is formed by a safety pin main body portion 16a inserted into the safety pin insertion recess 32b, and a safety pin.
- a rear shaft portion 16b extending rearward from a rear end surface of the main body portion 16a, and a rear enlarged portion 16c provided at a rear end portion of the rear shaft portion 16b.
- the rear enlarged portion 16c has a structure detachable from the rear shaft portion 16b. By removing the rear enlarged portion 16c, the rear shaft portion 16b can be inserted into the wedge plunger main body 15c. I have.
- Safety pin insertion recesses 32b in the jaw 30 is provided in a form having a predetermined length along the inner and outer direction (circumferential direction around the center line L 1). For this reason, when the jaw 30 slides in the normal stroke range (stroke range used when gripping the workpiece W), the safety pin 16 does not interfere with the jaw 30. However, on the other hand, when the jaw 30 is gripping the workpiece W, the fitting portion between the cam groove 32a of the master jaw 32 and the cam ridge 15a of the wedge plunger 15 is damaged, and the jaw 30 and the wedge are damaged.
- the safety pin 16 when replacing the jaw 30, it is necessary to pull out the jaw 30 outward from the outer end side of the jaw mounting portion 11a.
- the safety pin 16 if the safety pin 16 is still inserted into the safety pin insertion recess 32b of the jaw 30 when the jaw 30 is replaced, the safety pin 16 interferes with the jaw 30, so that the jaw mounting portion 11a Can not pull out the jaw 30 from.
- the safety pin 16 in the chuck device 10 of the first embodiment, the safety pin 16 is supported by the chuck body 11 in a state in which it can be slid in the front-rear direction. Or the state in which the jaws 30 are exchanged), the front and rear positions of the safety pin 16 can be changed.
- the sliding operation of the safety pin 16 is performed in conjunction with the sliding of the wedge plunger 15 in the front-rear direction. That is, as the wedge plunger 15 slides, the safety pin 16 slides between a retaining position for preventing the jaw 30 from coming out of the jaw attachment portion 11a and a retaining release position for preventing the jaw 30 from coming out. It is configured as follows.
- the rear pressing portion P 1 (the rear surface of the wedge plunger body 15 c in the chuck device 10 of the first embodiment) provided on the wedge plunger 15 and the safety pin 16 are provided.
- the safety pin 16 slides the wedge plunger 15 in the front-rear direction. although maintaining the state in which also retaining position, as shown in FIGS.
- the rear pressing portion P 1 When the rear and the pressed part P 2 is in a state of contact with each other, by the pressing force of the backward exerted from the rear pressing portion P 1 in the rear pressed portion P 2, the safety pin 16 Wedge plungers 15 and together are adapted to slide rearward.
- the rear pressing portion P 1 may be provided on another member that is integrally fixed to the wedge plunger 15, the rear pressed portion P 2, in addition to the member which is integrally fixed to the safety pin 16 It may be provided.
- the wedge plunger 15 rearward section S 2 from the front section S 1 of the sliding space ⁇ plunger is slid rearward, with the rear of the slide of the wedge plunger 15,
- the safety pin 16 is automatically retracted to the retaining release position. That is, when the wedge plunger 15 slides in the direction in which the cam connection of the wedge plunger 15 to the jaw 30 is released, the safety pin 16 slides from the retaining position to the retaining release position.
- a safety pin front urging member 19 for urging the safety pin 16 forward is provided on the rear side of the safety pin 16. Therefore, the wedge plunger 15 in the rear section S 2 is slid forward, the safety pin 16 to follow it also slides forward, as shown in FIG. 2, the rear end outer peripheral portion of the safety pin body portion 16a The safety pin 16 stops at a position where the front surface (safety pin side stopper) of the flange-shaped portion provided on the front surface of the plunger slide space ⁇ comes into contact with the front wall surface (chuck body side stopper).
- the safety pin 16 when the sliding to the rear section S 2 of the wedge plunger 15 from the front section S 1 of the sliding space ⁇ plunger, the safety pin 16 is retaining position It slides automatically to the retaining release position.
- the safety pin 16 is not completely integrated with the wedge plunger 15 (rather than employing a structure in which the safety pin 16 and the wedge plunger 15 always slide integrally), but slides in the front-rear direction.
- the safety pin 16 and the wedge plunger 15 which is configured separately to allow, only when the rear pressing portion P 1 and rear pressed portion P 2 is in contact with, adopting a structure that integrally slides Thereby, the sliding width of the safety pin 16 in the front-rear direction can be made shorter than the sliding width of the wedge plunger 15 in the front-rear direction. For this reason, the depth (depth in the front-back direction) of the recess 32b for inserting the safety pin can be made small, and the front-back length of the chuck body 11 can be suppressed. As a result, it is possible to maintain the bending rigidity of the chuck device high, shorten the work processing time, and widen the work processing range.
- FIG. 5 and 6 are views showing the chuck device 10 according to the second embodiment.
- Figure 5 is a state in which slide the wedge plunger 15 to the retracted end position of the rear section S 2 of the slide space ⁇ plunger
- FIG. 6 the slide wedge plunger 15 to the front section S 1 in the slide space ⁇ plunger
- the safety pin 16 is slid to the retaining position.
- 5 and 6 are cross-sectional views taken along a plane including the center line L 1 of the chuck device 10, the center line L 1 illustrates only one side (upper side).
- This operation is the same in the chuck device 10 of the second embodiment.
- the chuck device 10 according to the second embodiment will be described focusing on a configuration different from the chuck device 10 according to the above-described first embodiment.
- the configuration that does not particularly refer to the chuck device 10 of the second embodiment can employ the same configuration as the chuck device 10 of the first embodiment.
- the safety pin 16 is urged forward by the safety pin front urging member 19 disposed on the rear side of the safety pin 16.
- the safety pin 16 at the retaining release position returns to the retaining position (FIG. 2).
- the front pressing portion Q 1 provided in the wedge plunger 15 the front pressed portion Q 2 to which is provided the safety pin 16 by pressing the front pressed portion Q 2 forwardly abuts retaining release position safety pin 16 retaining position in (Fig. 5) is adapted to return to (Fig. 6).
- the front pressing portion Q 1 is, may be provided on another member that is integrally fixed to the wedge plunger 15, the front pressed portion Q 2 is, in addition to the member which is integrally fixed to the safety pin 16 It may be provided.
- the safety pin front urging member 19 can be omitted.
- the wedge plunger body portion 15c front front pressing portions Q 1, and the rear face of the safety pin body portion 16a is set to be the front pressed portion Q 2.
- the chuck device 10 of the second embodiment even when there is a wedge plunger 15 in the front section S1, the wedge plunger 15 slides rearward in contact with the front pressing portion Q 1, the front pressed portion Q 2 is brought If it disappears, the safety pin 16 will be able to slide backward. For this reason, there is a possibility that the safety pin 16 may move from the retaining position due to vibration or the like generated in the chuck device 10. Therefore, in the present embodiment, safety pin holding means for holding the safety pin 16 at the retaining position is provided.
- the safety pin holding means includes a position holding member provided on the outer periphery of the safety pin 16 (more precisely, on the outer periphery of the safety pin main body 16a).
- the groove 16 a 1 , the position holding fitting 20 for fitting into the position holding groove 16 a 1, and the fitting body urging member 21 for biasing the position holding fitting 20 toward the safety pin 16. make up.
- the safety pin 16 slides to the retaining position (FIG. 6)
- the safety pin holding means engages with the position holding fitting 20 in the position holding groove 16 a 1 , thereby pulling out the safety pin 16. It is held at the stop position.
- Position holding grooves 16a 1 in addition to the inner wall surface is provided to be inclined, assembly 20 fit for holding the position is assumed spherical.
- the position holding fitting 20 is made of a steel ball. Therefore, in order vibration generated in the chuck device 10, without fitting body 20 is out of a position holding from the groove 16a 1 for holding the position, but is held in locking position missing safety pin 16, the wedge plunger 15 rearwardly slide, a state in which the rear pressing portion P 1 is in contact with the rear pressed portion P 2, when the pressing force of the rearward is applied to the safety pin 16 from the wedge plunger 15, fitted for holding the position from the groove 16a 1 for holding the position The union 20 comes off.
- Position holding grooves 16a because provided annularly along the entire circumference of the outer peripheral portion of the safety pin body portion 16a, also as a safety pin 16 is rotated about its centerline, fit for holding the position coalesce 20 is adapted to be able to fit in the groove portion 16a 1 for holding the position.
- the chuck device 10 according to the second embodiment does not require the provision of the safety pin front urging member 19, and therefore requires a space for providing the safety pin front urging member 19 behind the safety pin 16. It is not necessary to secure them. For this reason, the chuck device 10 of the second embodiment can keep the front-rear length of the chuck body 11 short and maintain the bending rigidity of the chuck device 10 high as compared with the chuck device 10 of the first embodiment. It has the advantage that.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
Provided is a chuck apparatus configured to prevent jaws from slipping out of jaw mount parts while avoiding complication and increase in size of a jaw automatic exchange device. In the present invention, a wedge plunger is configured to: slide in the front-rear direction in a plunger slide space so as to cause a plurality of jaws for gripping a workpiece to slide in the inner-outer direction; and switch between connection and disconnection of cam connection in association with the slide. A safety pin is configured: to be stored inside a chuck body so as to be slidable in the front-rear direction; and to slide, in association with sliding of the wedge plunger, between a retaining position for preventing slipout of the jaws outward of the jaw mount part and a retaining disconnection position for not preventing the slipout. When the wedge plunger slides in the direction in which the cam connection is disconnected, the safety pin is configured to slide from the retaining position to the retaining disconnection position.
Description
本発明は、ジョー自動交換装置を用いてジョーを自動的に交換することが可能なチャック装置に関する。
The present invention relates to a chuck device capable of automatically exchanging jaws using an automatic jaw exchanging device.
特許文献1~2には、ジョー取付部の外端側から外方へジョーを引き抜くことによってジョーを交換可能に構成されているチャック装置が開示されている。
チ ャ ッ ク Patent Documents 1 and 2 disclose chuck devices that are configured such that the jaws can be replaced by pulling the jaws outward from the outer end side of the jaw mounting portion.
特許文献1~2のチャック装置では、ジョーとウェッジプランジャをカム連結することによって、ジョーを保持しているが、そのカム連結が破損等によって解除されると、ジョーがジョー取付部から外方に抜けてしまう虞がある。
In the chuck devices of Patent Documents 1 and 2, the jaw is held by connecting the jaw and the wedge plunger by cam, but when the cam connection is released due to breakage or the like, the jaw moves outward from the jaw mounting portion. There is a risk of falling off.
本発明は、上記課題を解決するために為されたものであり、ジョー自動交換装置の複雑化や大型化を招くことなく、ジョーがジョー取付部から抜け出ないようにしたチャック装置を提供するものである。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a chuck device that prevents a jaw from coming out of a jaw mounting portion without inviting a complicated and large-sized automatic jaw changing device. It is.
本発明によれば、ワークを把持するための複数のジョーと、チャックボディと、ウェッジプランジャと、安全ピンを備えるチャック装置であって、前記チャックボディは、前記複数のジョーを互いに近接する内側位置と互いに離反する外側位置との間でスライド可能な状態で取り付ける複数のジョー取付部を前面側に放射状に備え、前記ウェッジプランジャは、前記ジョーに対してカム連結された状態で、前記チャックボディの内側に設けられたプランジャ用スライド空間で前後方向にスライドすることにより、前記ジョーを内外方向にスライドさせるように構成され、前記ウェッジプランジャのスライドに伴って、前記カム連結の連結と解除が切り替わるように構成され、前記安全ピンは、前後方向にスライド可能な状態で前記チャックボディの内側に収容され、前記ウェッジプランジャのスライドに伴って、前記ジョー取付部の外方への前記ジョーの抜け出しを防ぐ抜け止め位置と、前記抜け出しを防がない抜け止め解除位置の間を前記安全ピンがスライドするように構成され、前記カム連結が解除される方向に前記ウェッジプランジャがスライドしたときに前記安全ピンが前記抜け止め位置から前記抜け止め解除位置にスライドするように構成される、チャック装置が提供される。
According to the present invention, there is provided a chuck device including a plurality of jaws for gripping a workpiece, a chuck body, a wedge plunger, and a safety pin, wherein the chuck body moves the plurality of jaws closer to each other. And a plurality of jaw mounting portions radially mounted on the front side for slidably mounting between the chuck body and the chuck body in a state where the jaws are cam-connected to the jaws. The jaw is slid inward and outward by sliding in the front-rear direction in a plunger slide space provided inside, so that the connection and release of the cam connection are switched with the sliding of the wedge plunger. The safety pin is slidable in the front-rear direction and the chuck is The wedge plunger is housed inside the slide, and along with the slide of the wedge plunger, a position between a retaining position for preventing the jaw from coming out of the jaw mounting portion and a retaining release position for preventing the jaw from being released. A safety pin is configured to slide, and the safety pin is configured to slide from the retaining position to the retaining release position when the wedge plunger slides in a direction in which the cam connection is released, A chuck device is provided.
本発明の構成では、安全ピンを抜け止め位置に配置することによって、ジョーの抜け出しを防ぐことができる。また、安全ピンは、ウェッジプランジャのスライドに伴ってスライドするので、安全ピンをスライドさせるための装置が不要であり、ジョー自動交換装置の複雑化や大型化を招くことがない。
In the configuration of the present invention, the jaws can be prevented from coming off by disposing the safety pin at the retaining position. Further, since the safety pin slides along with the sliding of the wedge plunger, a device for sliding the safety pin is unnecessary, and the jaw automatic exchanging device does not become complicated or large.
好ましくは、前記記載のチャック装置であって、前記プランジャ用スライド空間における前側区間で前記ウェッジプランジャが前後方向にスライドする際には、前記カム連結が維持されて、前記ジョーが前記ジョー取付部に沿って内外方向にスライドする一方、前記プランジャ用スライド空間における後側区間まで前記ウェッジプランジャをスライドさせると、前記カム連結が解除されて、前記ジョーが前記ウェッジプランジャに干渉されることなく前記ジョー取付部の外端側から外方に取り外すことが可能な状態となり、前記前側区間に前記ウェッジプランジャがあるときには、前記安全ピンが前記抜け止め位置に位置し、前記前側区間から前記後側区間まで前記ウェッジプランジャがスライドすると、このスライドに伴って、前記安全ピンが前記抜け止め解除位置までスライドするように構成される、チャック装置である。
Preferably, in the chuck device described above, when the wedge plunger slides in the front-rear direction in the front section in the plunger slide space, the cam connection is maintained, and the jaw is attached to the jaw mounting portion. When the wedge plunger is slid to a rear section in the plunger slide space while sliding inward and outward along the plunger, the cam connection is released, and the jaw is mounted without interference of the jaw with the wedge plunger. When the wedge plunger is present in the front section, the safety pin is located at the retaining position, and the safety pin is located in the front section from the front section to the rear section. When the wedge plunger slides, the slide Emissions is configured to slide until stopper release position wherein a chuck device.
好ましくは、前記記載のチャック装置であって、前記安全ピンを後方に押圧するための後方押圧部P1が、前記ウェッジプランジャ又はこれに一体的に固定された他の部材に設けられ、前記後方押圧部P1によって押圧される後方被押圧部P2が、前記安全ピン又はこれに一体的に固定された他の部材に設けられ、前記前側区間に前記ウェッジプランジャがあるときには、前記後方押圧部P1と前記後方被押圧部P2とが当接しておらず、前記安全ピンが前記抜け止め位置に位置し、前記前側区間から前記後側区間まで前記ウェッジプランジャがスライドしてきたときに、前記後方押圧部P1が前記後方被押圧部P2に対して前方から当接して前記後方被押圧部P2を直接又は別の部材を介して後方に押圧することにより、前記安全ピンが前記抜け止め解除位置までスライドするように構成される、チャック装置である。
Preferably, in the chuck device described above, a rear pressing portion P1 for pressing the safety pin rearward is provided on the wedge plunger or another member integrally fixed to the wedge plunger. The rear pressed portion P2 pressed by the portion P1 is provided on the safety pin or another member integrally fixed thereto, and when the wedge plunger is in the front section, the rear pressed portion P1 and the When the rear pressed portion P2 is not in contact with the safety pin is located at the retaining position and the wedge plunger slides from the front section to the rear section, the rear pressing section P1 is The safety pin is brought into contact with the rear pressed portion P2 from the front and presses the rear pressed portion P2 rearward directly or via another member, whereby the safety pin is moved. Configured to serial retaining the slide to the release position, a chuck device.
好ましくは、前記記載のチャック装置であって、前記抜け止め位置では、前記安全ピンの前端部が前記ジョーの後面側に設けられた安全ピン挿入用凹部に挿入され、前記抜け止め解除位置では、前記安全ピンの前端部が前記安全ピン挿入用凹部に挿入されていない、チャック装置である。
好ましくは、前記記載のチャック装置であって、前記安全ピンが、安全ピン本体部と、前記安全ピン本体部の後端面から後方に延びる後方軸部と、前記後方軸部の後端部に設けられた後方拡径部を備え、前記ウェッジプランジャが、前記ジョーに対して前記カム連結されるカム連結部と、前記カム連結部の後方に設けられ、前記安全ピンの後方軸部が挿通されるウェッジプランジャ本体部を備える、チャック装置である。 Preferably, in the chuck device described above, in the retaining position, the front end of the safety pin is inserted into a safety pin insertion recess provided on a rear surface side of the jaw, and in the retaining release position, A chuck device wherein a front end of the safety pin is not inserted into the safety pin insertion recess.
Preferably, in the chuck device described above, the safety pin is provided at a safety pin main body, a rear shaft extending rearward from a rear end surface of the safety pin main body, and a rear end of the rear shaft. The wedge plunger is provided behind the cam connecting portion and the cam connecting portion that is cam-connected to the jaw, and the rear shaft portion of the safety pin is inserted. A chuck device including a wedge plunger main body.
好ましくは、前記記載のチャック装置であって、前記安全ピンが、安全ピン本体部と、前記安全ピン本体部の後端面から後方に延びる後方軸部と、前記後方軸部の後端部に設けられた後方拡径部を備え、前記ウェッジプランジャが、前記ジョーに対して前記カム連結されるカム連結部と、前記カム連結部の後方に設けられ、前記安全ピンの後方軸部が挿通されるウェッジプランジャ本体部を備える、チャック装置である。 Preferably, in the chuck device described above, in the retaining position, the front end of the safety pin is inserted into a safety pin insertion recess provided on a rear surface side of the jaw, and in the retaining release position, A chuck device wherein a front end of the safety pin is not inserted into the safety pin insertion recess.
Preferably, in the chuck device described above, the safety pin is provided at a safety pin main body, a rear shaft extending rearward from a rear end surface of the safety pin main body, and a rear end of the rear shaft. The wedge plunger is provided behind the cam connecting portion and the cam connecting portion that is cam-connected to the jaw, and the rear shaft portion of the safety pin is inserted. A chuck device including a wedge plunger main body.
好ましくは、前記記載のチャック装置であって、前記安全ピンを前方に付勢するための安全ピン前方付勢部材が設けられる、チャック装置である。
Preferably, the chuck device described above is provided with a safety pin front urging member for urging the safety pin forward.
好ましくは、前記記載のチャック装置であって、前記後側区間から前記前側区間に前記ウェッジプランジャがスライドすると、このスライドに伴って、前記安全ピンが抜け止め位置までスライドするように構成される、チャック装置である。
Preferably, in the chuck device described above, when the wedge plunger slides from the rear section to the front section, the safety pin is configured to slide to a retaining position with the slide. It is a chuck device.
好ましくは、前記記載のチャック装置であって、前記安全ピンを前方に押圧するための前方押圧部Q1が、前記ウェッジプランジャ又はこれに一体的に固定された他の部材に設けられ、前記前方押圧部Q1によって押圧される前方被押圧部Q2が、前記安全ピン又はこれに一体的に固定された他の部材に設けられ、前記後側区間から前記前側区間に前記ウェッジプランジャがスライドしてくるときに、前方押圧部Q1が前方被押圧部Q2に対して後方から直接又は別の部材を介して当接して前方被押圧部Q2を前方に押圧することにより、前記安全ピンが前記抜け止め位置までスライドするように構成される、チャック装置である。
Preferably, in the chuck device described above, a front pressing part Q1 for pressing the safety pin forward is provided on the wedge plunger or another member integrally fixed thereto, and the front pressing part Q1 is provided. When the front pressed portion Q2 pressed by the portion Q1 is provided on the safety pin or another member integrally fixed thereto, and the wedge plunger slides from the rear section to the front section. Then, the front pressing portion Q1 abuts against the front pressed portion Q2 from behind directly or via another member to press the front pressed portion Q2 forward, whereby the safety pin reaches the retaining position. A chuck device configured to slide.
好ましくは、前記記載のチャック装置であって、安全ピン保持手段を備え、前記安全ピン保持手段は、前記安全ピンを前記抜け止め位置で保持可能に構成され、かつ前記ウェッジプランジャが前記安全ピンを後方にスライドする際には、前記安全ピンの前記抜け止め位置での保持を解除するように構成される、チャック装置である。
Preferably, the chuck device described above, further comprising a safety pin holding unit, wherein the safety pin holding unit is configured to be able to hold the safety pin at the retaining position, and the wedge plunger holds the safety pin. A chuck device configured to release the holding of the safety pin at the retaining position when sliding backward.
好ましくは、ワークを把持するための複数のジョーを互いに近接する内側位置と互いに離反する外側位置との間でスライド可能な状態で取り付ける複数のジョー取付部が前面側に放射状に設けられたチャックボディと、
ジョー取付部に取り付けられたジョーに対してカム連結され、チャックボディの内側に設けられたプランジャ用スライド空間で前後方向にスライドすることにより、ジョーを内外方向にスライドさせるウェッジプランジャと、を備え、
プランジャ用スライド空間における前側区間でウェッジプランジャが前後方向にスライドする際には、前記カム連結が維持されて、ジョーがジョー取付部に沿って内外方向にスライドする一方、
プランジャ用スライド空間における後側区間までウェッジプランジャをスライドさせると、前記カム連結が解除されて、ジョーがウェッジプランジャに干渉されることなくジョー取付部の外端側から外方に取り外すことが可能な状態となるチャック装置であって、
ジョーの後面側に設けられた安全ピン挿入用凹部に挿入されて、ジョーがジョー取付部の外方へ抜け出ないようにする安全ピンが、前後方向にスライド可能な状態でチャックボディの内側に収容されるとともに、
安全ピンを後方に押圧するための後方押圧部P1が、ウェッジプランジャに設けられ、
後方押圧部P1によって押圧される後方被押圧部P2が、安全ピンに設けられ、
プランジャ用スライド空間における前側区間にウェッジプランジャがあるときには、後方押圧部P1と後方被押圧部P2とが当接しておらず、安全ピンの前端部が安全ピン挿入用凹部に挿入される抜け止め位置に安全ピンが位置する一方、
プランジャ用スライド空間における前側区間から後側区間までウェッジプランジャがスライドしてきたときに、後方押圧部P1が後方被押圧部P2に対して前方から当接して後方被押圧部P2を後方に押圧することにより、安全ピンの前端部が安全ピン挿入用凹部から抜け出る抜け止め解除位置まで安全ピンがスライドするようにしたことを特徴とするチャック装置が提供される。 Preferably, a plurality of jaw mounting portions for slidably mounting a plurality of jaws for gripping a work between an inner position close to each other and an outer position separated from each other are radially provided on a front side of the chuck body. When,
A wedge plunger that is cam-coupled to the jaw attached to the jaw attachment portion, slides in the front-rear direction in a plunger slide space provided inside the chuck body, and thereby slides the jaw in and out.
When the wedge plunger slides back and forth in the front section in the plunger slide space, the cam connection is maintained, and the jaws slide inward and outward along the jaw mounting portion,
When the wedge plunger is slid to the rear section in the plunger slide space, the cam connection is released, and the jaw can be removed outward from the outer end side of the jaw mounting portion without being interfered by the wedge plunger. A chuck device that is in a state,
A safety pin that is inserted into the safety pin insertion recess provided on the rear side of the jaw and prevents the jaw from coming out of the jaw mounting portion is housed inside the chuck body in a state that it can slide in the front-rear direction. As well as
Rear pressing part P 1 for pressing the safety pin backwards is provided in the wedge plunger,
Rear pressed portion P 2 which is pressed by the rear pressing portion P 1 is provided in the safety pin,
When there is a wedge plunger to the front section in the plunger slide space, missing the rear pressing portion P 1 and rear pressed portion P 2 is not in contact with the front end of the safety pin is inserted into the safety pin insertion recessed portion While the safety pin is located at the stop position,
When the wedge plunger from the front section to the rear section has been slid in the plunger slide space, the rear pressed portion P 2 at the rear behind the pressing portion P 1 abuts against the front relative to the rear pressed portion P 2 A chuck device is provided in which the safety pin is slid to a retaining release position where the front end of the safety pin comes out of the safety pin insertion recess by pressing.
ジョー取付部に取り付けられたジョーに対してカム連結され、チャックボディの内側に設けられたプランジャ用スライド空間で前後方向にスライドすることにより、ジョーを内外方向にスライドさせるウェッジプランジャと、を備え、
プランジャ用スライド空間における前側区間でウェッジプランジャが前後方向にスライドする際には、前記カム連結が維持されて、ジョーがジョー取付部に沿って内外方向にスライドする一方、
プランジャ用スライド空間における後側区間までウェッジプランジャをスライドさせると、前記カム連結が解除されて、ジョーがウェッジプランジャに干渉されることなくジョー取付部の外端側から外方に取り外すことが可能な状態となるチャック装置であって、
ジョーの後面側に設けられた安全ピン挿入用凹部に挿入されて、ジョーがジョー取付部の外方へ抜け出ないようにする安全ピンが、前後方向にスライド可能な状態でチャックボディの内側に収容されるとともに、
安全ピンを後方に押圧するための後方押圧部P1が、ウェッジプランジャに設けられ、
後方押圧部P1によって押圧される後方被押圧部P2が、安全ピンに設けられ、
プランジャ用スライド空間における前側区間にウェッジプランジャがあるときには、後方押圧部P1と後方被押圧部P2とが当接しておらず、安全ピンの前端部が安全ピン挿入用凹部に挿入される抜け止め位置に安全ピンが位置する一方、
プランジャ用スライド空間における前側区間から後側区間までウェッジプランジャがスライドしてきたときに、後方押圧部P1が後方被押圧部P2に対して前方から当接して後方被押圧部P2を後方に押圧することにより、安全ピンの前端部が安全ピン挿入用凹部から抜け出る抜け止め解除位置まで安全ピンがスライドするようにしたことを特徴とするチャック装置が提供される。 Preferably, a plurality of jaw mounting portions for slidably mounting a plurality of jaws for gripping a work between an inner position close to each other and an outer position separated from each other are radially provided on a front side of the chuck body. When,
A wedge plunger that is cam-coupled to the jaw attached to the jaw attachment portion, slides in the front-rear direction in a plunger slide space provided inside the chuck body, and thereby slides the jaw in and out.
When the wedge plunger slides back and forth in the front section in the plunger slide space, the cam connection is maintained, and the jaws slide inward and outward along the jaw mounting portion,
When the wedge plunger is slid to the rear section in the plunger slide space, the cam connection is released, and the jaw can be removed outward from the outer end side of the jaw mounting portion without being interfered by the wedge plunger. A chuck device that is in a state,
A safety pin that is inserted into the safety pin insertion recess provided on the rear side of the jaw and prevents the jaw from coming out of the jaw mounting portion is housed inside the chuck body in a state that it can slide in the front-rear direction. As well as
Rear pressing part P 1 for pressing the safety pin backwards is provided in the wedge plunger,
Rear pressed portion P 2 which is pressed by the rear pressing portion P 1 is provided in the safety pin,
When there is a wedge plunger to the front section in the plunger slide space, missing the rear pressing portion P 1 and rear pressed portion P 2 is not in contact with the front end of the safety pin is inserted into the safety pin insertion recessed portion While the safety pin is located at the stop position,
When the wedge plunger from the front section to the rear section has been slid in the plunger slide space, the rear pressed portion P 2 at the rear behind the pressing portion P 1 abuts against the front relative to the rear pressed portion P 2 A chuck device is provided in which the safety pin is slid to a retaining release position where the front end of the safety pin comes out of the safety pin insertion recess by pressing.
本発明のチャック装置の好適な実施態様について、図面を用いてより具体的に説明する。以下においては、第一実施態様のチャック装置と第二実施態様のチャック装置とを例に挙げて説明をする。しかし、本発明の技術的範囲は、これらのチャック装置に限定されるものではなく、発明の趣旨を損なわない範囲で適宜変更を施すことができる。
好 適 A preferred embodiment of the chuck device of the present invention will be described more specifically with reference to the drawings. Hereinafter, the chuck device according to the first embodiment and the chuck device according to the second embodiment will be described as examples. However, the technical scope of the present invention is not limited to these chuck devices, and can be appropriately changed without departing from the spirit of the invention.
1.第一実施態様のチャック装置
まず、第一実施態様のチャック装置について説明する。 1. First, the chuck device of the first embodiment will be described.
まず、第一実施態様のチャック装置について説明する。 1. First, the chuck device of the first embodiment will be described.
図1~4は、第一実施態様のチャック装置10を示した図である。図1は、ジョー30を取り付けたチャック装置10を前面側から見た状態を、図2は、ジョー取付部11aに取り付けたジョー30でワークWを把持している状態を、図3は、プランジャ用スライド空間αの前側区間S1から後側区間S2にウェッジプランジャ15をスライドさせ、後方押圧部P1と後方被押圧部P2とが当接した瞬間の状態を、図4は、プランジャ用スライド空間αにおける後側区間S2の後退端位置までウェッジプランジャ15をスライドさせた状態をそれぞれ示している。図2~4は、チャック装置10を中心線L1を含む平面で切断した断面図であって、中心線L1よりも一側(上側)のみを示したものである。
1 to 4 are views showing a chuck device 10 according to a first embodiment. 1 shows a state in which the chuck device 10 with the jaw 30 attached is viewed from the front side, FIG. 2 shows a state in which the jaw 30 attached to the jaw attachment portion 11a grips the workpiece W, and FIG. 3 shows a plunger. wedge plunger 15 is slid to the rear section S 2 from the front section S 1 of the use slide space alpha, the moment when the rear pressing portion P 1 and rear pressed portion P 2 is in contact state, FIG. 4, the plunger respectively show a state in which slide the wedge plunger 15 to the retracted end position of the rear section S 2 in use slide space alpha. 2-4 is a sectional view taken along a plane including the center line L 1 of the chuck device 10, the center line L 1 illustrates only one side (upper side).
第一実施態様のチャック装置10は、図2に示すように、チャックボディ11と、ウェッジプランジャ15と、安全ピン16とを備えたものとなっている。ウェッジプランジャ15は、チャックボディ11の内側に設けられたプランジャ用スライド空間αに収容されている。このウェッジプランジャ15は、部材22等とともにプランジャ部を構成しており、図示省略のドローパイプ等を介して、チャック装置10の後方に設けられたシリンダ装置(図示省略)に接続されている。このシリンダ装置を駆動することで、プランジャ用スライド空間α内でウェッジプランジャ15を前後方向にスライドさせることができるようになっている。
The chuck device 10 according to the first embodiment includes a chuck body 11, a wedge plunger 15, and a safety pin 16, as shown in FIG. The wedge plunger 15 is housed in a plunger slide space α provided inside the chuck body 11. The wedge plunger 15 forms a plunger portion together with the member 22 and the like, and is connected to a cylinder device (not shown) provided behind the chuck device 10 via a draw pipe or the like (not shown). By driving this cylinder device, the wedge plunger 15 can be slid in the front-rear direction within the plunger slide space α.
ウェッジプランジャ15の具体的な形態は、特に限定されないが、第一実施態様のチャック装置10においては、図2に示すように、ウェッジプランジャ15を、カム連結部15bと、ウェッジプランジャ本体部15cとで構成している。カム連結部15bは、カム凸条15aが設けられた部分となっており、後述するように、ジョー30に対してカム連結される部分となっている。一方、ウェッジプランジャ本体部15cは、カム連結部15bの後方に設けられた部分となっており、後述する安全ピン16の後方軸部16bが挿通される部分となっている。
Although the specific form of the wedge plunger 15 is not particularly limited, in the chuck device 10 of the first embodiment, as shown in FIG. 2, the wedge plunger 15 is connected to a cam connecting portion 15b, a wedge plunger body 15c. It consists of. The cam connecting portion 15b is a portion provided with the cam ridge 15a, and is a portion which is cam-connected to the jaw 30 as described later. On the other hand, the wedge plunger main body 15c is a part provided behind the cam connecting part 15b, and is a part through which a rear shaft part 16b of the safety pin 16 described later is inserted.
チャックボディ11は、図示省略の回転駆動機構(モーター等)によって、中心線L1を中心として回転することができるようになっている。チャックボディ11の前面には、図1に示すように、複数本(同図においては3本)のジョー取付部11aが、中心線L1を中心として放射状に設けられている。第一実施態様のチャック装置10においては、ジョー取付部11aを回転対称(中心線L1を中心とした回転対称)に配してる。それぞれのジョー取付部11aには、ジョー30が取り付けられている。これらのジョー30は、それぞれのジョー取付部11aに沿って内外方向(中心線L1を中心とする径方向)にスライドすることができるようになっている。複数のジョー30をそれぞれのジョー取付部11aに沿って内方(中心線L1に近づく向き)にスライドさせると、複数のジョー30が互いに接近する一方、複数のジョー30をそれぞれのジョー取付部11aに沿って外方(中心線L1から遠ざかる向き)にスライドさせると、複数のジョー30が互いに離反するようになっている。ジョー30にこのような動作をさせることによって、ジョー30でワークWを把持する動作と、ワークWを離す動作とが行われる。
Chuck body 11 by an unillustrated rotary drive mechanism (motor etc.), and is capable of rotating around the center line L 1. The front surface of the chuck body 11, as shown in FIG. 1, the jaw attachment portion 11a of the plurality of (three in the figure) is provided radially around the center line L 1. In the chuck device 10 of the first embodiment, are arranged jaw attachment portion 11a in rotational symmetry (rotational symmetry around the center line L 1). A jaw 30 is attached to each jaw attachment portion 11a. These jaws 30 are adapted to be able to slide in and out along the respective jaw mounting portion 11a (the radial direction around the center line L 1). Sliding plurality of jaws 30 inwardly along each of the jaw mounting portion 11a (a direction to approach the center line L 1), while the plurality of jaws 30 approach each other, each jaw mounting portion a plurality of jaws 30 sliding outward (direction away from the center line L 1) along the 11a, so that the plurality of jaws 30 away from each other. By causing the jaw 30 to perform such an operation, an operation of gripping the work W with the jaw 30 and an operation of releasing the work W are performed.
第一実施態様のチャック装置10において、ジョー取付部11aは、凹溝によって構成している。この凹溝(ジョー取付部11a)には、ジョー30が嵌合するようになっており、この凹溝(ジョー取付部11a)によってジョー30が内外方向(中心線L1を中心とした径方向)に案内されるようになっている。第一実施態様のチャック装置10においては、ジョー30を、ワークWに当接するソフトジョー31と、ソフトジョー31の後面側に接続されたマスタージョー32とで構成しているところ、これらのうち、マスタージョー32が上記の凹溝(ジョー取付部11a)に嵌合されて案内されるようにしている。
In the chuck device 10 of the first embodiment, the jaw attachment portion 11a is formed by a groove. The groove (jaw mount portion 11a), the jaws 30 are adapted to fit the radial jaws 30 around the inner and outer direction (center line L 1 by the recessed groove (the jaw attachment portion 11a) ). In the chuck device 10 of the first embodiment, the jaw 30 is configured by the soft jaw 31 that contacts the workpiece W and the master jaw 32 that is connected to the rear surface side of the soft jaw 31. The master jaw 32 is fitted and guided in the concave groove (jaw mounting portion 11a).
それぞれのジョー30を構成するマスタージョー32の側面には、カム溝32aを設けている。このカム溝32aは、ウェッジプランジャ15のカム凸条15aに嵌合(カム連結)されている。マスタージョー32のカム溝32aとウェッジプランジャ15のカム凸条15aはいずれも、中心線L1に対して傾斜した状態に設けられている。このため、プランジャ用スライド空間α内でウェッジプランジャ15を前後方向にスライドさせると、上記のカム溝32aとカム凸条15aとからなるカム機構によって、前後方向の移動が内外方向の移動に変換され、ジョー30が内外方向にスライドするようになっている。
A cam groove 32a is provided on a side surface of the master jaw 32 constituting each jaw 30. The cam groove 32a is fitted (cam-coupled) to the cam ridge 15a of the wedge plunger 15. Both cam projections 15a of the cam groove 32a and the wedge plunger 15 of the master jaw 32 is provided in a state of being inclined with respect to the center line L 1. Therefore, when the wedge plunger 15 is slid in the front-rear direction in the plunger slide space α, the movement in the front-rear direction is converted into the movement in the inside and outside directions by the cam mechanism including the cam groove 32a and the cam ridge 15a. , The jaws 30 slide inward and outward.
また、第一実施態様のチャック装置10は、特許文献1に示されたものと略同様のジョー自動交換装置でジョー30を自動的に交換することが可能なものとなっている。このため、ジョー取付部11aは、チャックボディ11の外周部に達するまで設けられており、ジョー取付部11aに取り付けられたジョー30をジョー取付部11aの外端部から外方に引き抜くことができるようにしている。ジョー取付部11aからジョー30の引き抜く操作は、ジョー自動交換装置によって行われる。ただし、既に述べたように、ジョー30におけるマスタージョー32は、それに設けられたカム溝32aがウェッジプランジャ15のカム凸条15aに嵌合した状態(ジョー30とウェッジプランジャ15とがカム連結した状態)となっているところ、この状態のままでは、ジョー30をジョー取付部11aから引き抜くことができない。
In addition, the chuck device 10 of the first embodiment is capable of automatically exchanging the jaws 30 with a jaw automatic exchanging device substantially similar to that disclosed in Patent Document 1. For this reason, the jaw attachment portion 11a is provided until it reaches the outer peripheral portion of the chuck body 11, and the jaw 30 attached to the jaw attachment portion 11a can be pulled outward from the outer end of the jaw attachment portion 11a. Like that. The operation of pulling out the jaw 30 from the jaw mounting portion 11a is performed by an automatic jaw changing device. However, as described above, the master jaw 32 of the jaw 30 is in a state where the cam groove 32a provided in the jaw 30 is fitted to the cam ridge 15a of the wedge plunger 15 (the state in which the jaw 30 and the wedge plunger 15 are cam-connected). However, in this state, the jaw 30 cannot be pulled out from the jaw mounting portion 11a in this state.
この点、第一実施態様のチャック装置10においては、チャック装置10がチャック動作(ワークWを把持するためにジョー30を内外方向にスライドさせる動作)を行う際には、図2に示すように、プランジャ用スライド空間αにおける前側区間S1(マスタージョー32のカム溝32aとウェッジプランジャ15のカム凸条15aとが嵌合する区間。各図においては、ウェッジプランジャ15の後端面の位置を基準に前側区間S1を示している。)でウェッジプランジャ15がスライドするものの、チャック装置10に取り付けたジョー30を交換する際には、図3及び図4に示すように、プランジャ用スライド空間αにおける後側区間S2(各図においては、ウェッジプランジャ15の後端面の位置を基準に後側区間S2を示している。)にウェッジプランジャ15が退避することで、マスタージョー32のカム溝32aとウェッジプランジャ15のカム凸条15aとの嵌合が外れる(ジョー30とウェッジプランジャ15とのカム連結が解除される)ようになっている。つまり、ウェッジプランジャ15のスライドに伴って、カム連結の連結と解除が切り替わるように構成されている。これにより、チャックボディ11に取り付けられたジョー30を、ジョー自動交換装置を用いてジョー取付部11aの外端部から外方へ引き抜く際に、ウェッジプランジャ15がジョー30に干渉しないようにすることが可能となっている。
In this regard, in the chuck device 10 of the first embodiment, when the chuck device 10 performs a chucking operation (an operation of sliding the jaws 30 inward and outward to grip the work W), as shown in FIG. , A front section S 1 in the plunger slide space α (a section where the cam groove 32a of the master jaw 32 and the cam ridge 15a of the wedge plunger 15 are fitted. In each figure, the position of the rear end face of the wedge plunger 15 is used as a reference. a although the wedge plunger 15 shows a front section S 1.) slides, when replacing the jaw 30 mounted to the chuck device 10, as shown in FIGS. 3 and 4, the slide space α plunger in S 2 (each figure rear section in, shows the rear section S 2 on the basis of the position of the rear end face of the wedge plunger 15 When the wedge plunger 15 is retracted, the engagement between the cam groove 32a of the master jaw 32 and the cam ridge 15a of the wedge plunger 15 is released (the cam connection between the jaw 30 and the wedge plunger 15 is released). ) That is, the connection and release of the cam connection are switched as the wedge plunger 15 slides. This prevents the wedge plunger 15 from interfering with the jaw 30 when the jaw 30 attached to the chuck body 11 is pulled out from the outer end of the jaw attachment portion 11a using the automatic jaw changing device. Is possible.
ところで、プランジャ用スライド空間αにおける前側区間S1にウェッジプランジャ15がある場合でも、マスタージョー32のカム溝32aとウェッジプランジャ15のカム凸条15aとによる嵌合部分が破損すること等があると、ジョー30がウェッジプランジャ15に干渉されることなく、ジョー取付部11aに沿って移動できる状態となってしまう。この場合には、重力によってジョー30がジョー取付部11aから外方に抜けてしまう虞がある。加えて、第一実施態様のチャック装置10においては、中心線L1を中心としてチャック装置10を回転させることが可能な構造を採用しているところ、チャック装置10を回転させたときの遠心力によってジョー30がジョー取付部11aから外方に抜けて飛散する虞もある。
Incidentally, even if there is a wedge plunger 15 in the front section S 1 in the slide space α plunger, if there such that the cam groove 32a and the fitting portion by the cam protrusions 15a of the wedge plunger 15 of the master jaw 32 is damaged Thus, the jaws 30 can move along the jaw mounting portions 11a without being interfered by the wedge plungers 15. In this case, there is a possibility that the jaw 30 may fall out of the jaw mounting portion 11a due to gravity. In addition, in the chucking device 10 in the first embodiment, when to rotate the chuck device 10 to the center line L 1 employs a structure as possible, the centrifugal force when rotating the chuck devices 10 As a result, there is a possibility that the jaws 30 may fall out of the jaw mounting portion 11a and scatter.
このため、第一実施態様のチャック装置10では、図2に示すように、チャックボディ11に安全ピン16を取り付け、この安全ピン16の前端部が、ジョー30の後面側に設けられた安全ピン挿入用凹部32bに挿入されるようにしている。安全ピン16の具体的な形態は、特に限定されないが、第一実施態様のチャック装置10においては、安全ピン16を、安全ピン挿入用凹部32bに挿入される安全ピン本体部16aと、安全ピン本体部16aの後端面から後方に延びる後方軸部16bと、後方軸部16bの後端部に設けられた後方拡径部16cとで構成している。後方拡径部16cは、後方軸部16bに対して取り外し可能な構造としており、後方拡径部16cを取り外すことで、後方軸部16bをウェッジプランジャ本体部15cに挿通することができるようにしている。
For this reason, in the chuck device 10 of the first embodiment, as shown in FIG. 2, a safety pin 16 is attached to the chuck body 11, and a front end of the safety pin 16 is provided on a rear surface side of the jaw 30. It is designed to be inserted into the insertion recess 32b. Although the specific form of the safety pin 16 is not particularly limited, in the chuck device 10 of the first embodiment, the safety pin 16 is formed by a safety pin main body portion 16a inserted into the safety pin insertion recess 32b, and a safety pin. A rear shaft portion 16b extending rearward from a rear end surface of the main body portion 16a, and a rear enlarged portion 16c provided at a rear end portion of the rear shaft portion 16b. The rear enlarged portion 16c has a structure detachable from the rear shaft portion 16b. By removing the rear enlarged portion 16c, the rear shaft portion 16b can be inserted into the wedge plunger main body 15c. I have.
ジョー30における安全ピン挿入用凹部32bは、内外方向(中心線L1を中心とする径方向)に沿って所定の長さを有する形態に設けられている。このため、ジョー30が通常のストローク範囲(ワークWを把持する際に使用するストローク範囲)でスライドする際には、安全ピン16がジョー30に干渉しないようになっている。しかし、その一方で、ジョー30がワークWを把持しているときに、マスタージョー32のカム溝32aとウェッジプランジャ15のカム凸条15aとによる嵌合部分が破損等して、ジョー30とウェッジプランジャ15とのカム連結が解除され、上述した重力や遠心力によって、ジョー30がジョー取付部11aの外端側へスライドし始めた際には、安全ピン挿入用凹部32bの内側の端部に安全ピン16の前端部が引っ掛かり、ジョー30がそれ以上外方へスライドしないようになっている。したがって、ジョー30でワークWを把持しているときには、マスタージョー32のカム溝32aとウェッジプランジャ15のカム凸条15aとによる嵌合部分が破損等することがあっても、ジョー30がジョー取付部11aから抜け出ないようになっている。
Safety pin insertion recesses 32b in the jaw 30 is provided in a form having a predetermined length along the inner and outer direction (circumferential direction around the center line L 1). For this reason, when the jaw 30 slides in the normal stroke range (stroke range used when gripping the workpiece W), the safety pin 16 does not interfere with the jaw 30. However, on the other hand, when the jaw 30 is gripping the workpiece W, the fitting portion between the cam groove 32a of the master jaw 32 and the cam ridge 15a of the wedge plunger 15 is damaged, and the jaw 30 and the wedge are damaged. When the cam connection with the plunger 15 is released and the jaw 30 starts to slide toward the outer end side of the jaw mounting portion 11a due to the above-mentioned gravity or centrifugal force, the jaw 30 is inserted into the inner end of the safety pin insertion recess 32b. The front end of the safety pin 16 is caught, preventing the jaw 30 from sliding further outward. Therefore, when the workpiece W is gripped by the jaw 30, even if the fitting portion between the cam groove 32 a of the master jaw 32 and the cam ridge 15 a of the wedge plunger 15 may be damaged, the jaw 30 is not attached to the jaw. It does not get out of the part 11a.
ただし、既に述べたように、ジョー30を交換する際には、ジョー取付部11aの外端側から外方へジョー30を引き抜けるようにしておく必要がある。この点、ジョー30を交換する際に、ジョー30の安全ピン挿入用凹部32bに安全ピン16が挿入されたままの状態であると、安全ピン16がジョー30に干渉するため、ジョー取付部11aからジョー30を引き抜くことができない。このため、第一実施態様のチャック装置10では、安全ピン16を、前後方向にスライド可能な状態でチャックボディ11に支持させており、チャック装置10の状態(ジョー30でワークWを把持する状態にあるかジョー30を交換する状態にあるか)に応じて、安全ピン16の前後位置を変化させることができるようにしている。
However, as described above, when replacing the jaw 30, it is necessary to pull out the jaw 30 outward from the outer end side of the jaw mounting portion 11a. In this regard, if the safety pin 16 is still inserted into the safety pin insertion recess 32b of the jaw 30 when the jaw 30 is replaced, the safety pin 16 interferes with the jaw 30, so that the jaw mounting portion 11a Can not pull out the jaw 30 from. For this reason, in the chuck device 10 of the first embodiment, the safety pin 16 is supported by the chuck body 11 in a state in which it can be slid in the front-rear direction. Or the state in which the jaws 30 are exchanged), the front and rear positions of the safety pin 16 can be changed.
すなわち、図2に示すように、ジョー30でワークWを把持しているとき(プランジャ用スライド空間αの前側区間S1にウェッジプランジャ15があるとき)には、安全ピン16の前端部が安全ピン挿入用凹部32bに挿入される位置(抜け止め位置)まで、安全ピン16が前方にスライドする一方、図4に示すように、ジョー30を交換するとき(プランジャ用スライド空間αの後側区間S2にウェッジプランジャ15があるとき)には、安全ピン16の前端部が安全ピン挿入用凹部32bから抜け出る位置(抜け止め解除位置)まで、安全ピン16が後方にスライドするようにしている。安全ピン16のこのスライド動作は、ウェッジプランジャ15の前後方向のスライドに連動して行われるようになっている。つまり、ウェッジプランジャ15のスライドに伴って、ジョー取付部11aの外方へのジョー30の抜け出しを防ぐ抜け止め位置と、前記抜け出しを防がない抜け止め解除位置の間を安全ピン16がスライドするように構成されている。
That is, as shown in FIG. 2, the time (when there is a wedge plunger 15 in the front section S 1 of the sliding space α plunger) that is holding the workpiece W by the jaws 30, the front end of the safety pin 16 is secure While the safety pin 16 slides forward to a position where it is inserted into the pin insertion recess 32b (retaining position), as shown in FIG. 4, when the jaw 30 is replaced (the rear section of the plunger slide space α). but when there is a wedge plunger 15) in S 2, the front end of the safety pin 16 comes out of the safety pin insertion recess 32b position to (retaining the release position), the safety pin 16 is adapted to slide rearward. The sliding operation of the safety pin 16 is performed in conjunction with the sliding of the wedge plunger 15 in the front-rear direction. That is, as the wedge plunger 15 slides, the safety pin 16 slides between a retaining position for preventing the jaw 30 from coming out of the jaw attachment portion 11a and a retaining release position for preventing the jaw 30 from coming out. It is configured as follows.
具体的には、図2に示すように、ウェッジプランジャ15に設けた後方押圧部P1(第一実施態様のチャック装置10においては、ウェッジプランジャ本体部15cの後面)と、安全ピン16に設けた後方被押圧部P2(第一実施態様のチャック装置10においては、後方拡径部16cの前面)とが当接していないときには、安全ピン16は、ウェッジプランジャ15が前後方向にスライドしても抜け止め位置にある状態を維持するものの、図3及び図4に示すように、プランジャ用スライド空間αの後側区間S2までウェッジプランジャ15が後方にスライドしてきて、後方押圧部P1と後方被押圧部P2とが互いに当接した状態となると、後方押圧部P1から後方被押圧部P2に加えられる後向きの押圧力によって、安全ピン16がウェッジプランジャ15と一体となって後方にスライドするようになっている。なお、後方押圧部P1は、ウェッジプランジャ15に一体的に固定された他の部材に設けてもよく、後方被押圧部P2は、安全ピン16に一体的に固定された他の部材に設けてもよい。
Specifically, as shown in FIG. 2, the rear pressing portion P 1 (the rear surface of the wedge plunger body 15 c in the chuck device 10 of the first embodiment) provided on the wedge plunger 15 and the safety pin 16 are provided. When the rear pressed portion P 2 (in the chuck device 10 of the first embodiment, the front surface of the rear enlarged diameter portion 16c is not in contact), the safety pin 16 slides the wedge plunger 15 in the front-rear direction. although maintaining the state in which also retaining position, as shown in FIGS. 3 and 4, the side section S 2 to the wedge plunger 15 after the sliding space α plunger is been slid rearward, the rear pressing portion P 1 When the rear and the pressed part P 2 is in a state of contact with each other, by the pressing force of the backward exerted from the rear pressing portion P 1 in the rear pressed portion P 2, the safety pin 16 Wedge plungers 15 and together are adapted to slide rearward. Incidentally, the rear pressing portion P 1 may be provided on another member that is integrally fixed to the wedge plunger 15, the rear pressed portion P 2, in addition to the member which is integrally fixed to the safety pin 16 It may be provided.
このため、ジョー30を交換するために、プランジャ用スライド空間αの前側区間S1から後側区間S2にウェッジプランジャ15を後方にスライドさせると、そのウェッジプランジャ15の後方のスライドに伴って、安全ピン16が抜け止め解除位置まで自動的に退避するようになっている。つまりジョー30に対するウェッジプランジャ15のカム連結が解除される方向にウェッジプランジャ15がスライドしたときに安全ピン16が抜け止め位置から抜け止め解除位置にスライドするように構成されている。
Therefore, in order to exchange the jaws 30, the wedge plunger 15 rearward section S 2 from the front section S 1 of the sliding space α plunger is slid rearward, with the rear of the slide of the wedge plunger 15, The safety pin 16 is automatically retracted to the retaining release position. That is, when the wedge plunger 15 slides in the direction in which the cam connection of the wedge plunger 15 to the jaw 30 is released, the safety pin 16 slides from the retaining position to the retaining release position.
安全ピン16の後側には、安全ピン16を前方に付勢するための安全ピン前方付勢部材19を設けている。このため、後側区間S2にあるウェッジプランジャ15を前方にスライドさせると、それに追従して安全ピン16も前方にスライドし、図2に示すように、安全ピン本体部16aの後端外周部に設けたフランジ状の部分の前面(安全ピン側ストッパー)が、プランジャ用スライド空間αの前壁面(チャックボディ側ストッパー)に当接する位置で安全ピン16が止まるようになっている。
A safety pin front urging member 19 for urging the safety pin 16 forward is provided on the rear side of the safety pin 16. Therefore, the wedge plunger 15 in the rear section S 2 is slid forward, the safety pin 16 to follow it also slides forward, as shown in FIG. 2, the rear end outer peripheral portion of the safety pin body portion 16a The safety pin 16 stops at a position where the front surface (safety pin side stopper) of the flange-shaped portion provided on the front surface of the plunger slide space α comes into contact with the front wall surface (chuck body side stopper).
以上のように、第一実施態様のチャック装置10においては、ウェッジプランジャ15をプランジャ用スライド空間αの前側区間S1から後側区間S2にスライドさせるときに、安全ピン16が抜け止め位置から抜け止め解除位置へと自動的にスライドするものとなっている。
As described above, in the chucking device 10 in the first embodiment, when the sliding to the rear section S 2 of the wedge plunger 15 from the front section S 1 of the sliding space α plunger, the safety pin 16 is retaining position It slides automatically to the retaining release position.
また、安全ピン16をウェッジプランジャ15に対して完全に一体化させるのではなく(安全ピン16とウェッジプランジャ15とが常に一体的にスライドする構造を採用するのではなく)、互いに前後方向にスライドできるように別体で構成した安全ピン16とウェッジプランジャ15とが、後方押圧部P1と後方被押圧部P2とが当接しているときにのみ、一体的にスライドする構造を採用したことによって、安全ピン16の前後方向のスライド幅を、ウェッジプランジャ15の前後方向のスライド幅よりも短くすることができるようになっている。このため、安全ピン挿入用凹部32bの深さ(前後方向の深さ)を浅くして、チャックボディ11の前後長を抑えることも可能となっている。これによって、チャック装置の曲げ剛性を高く維持すること、ワークの加工時間を短縮すること、ワークの加工範囲を広くすることが可能になる。
Also, the safety pin 16 is not completely integrated with the wedge plunger 15 (rather than employing a structure in which the safety pin 16 and the wedge plunger 15 always slide integrally), but slides in the front-rear direction. the safety pin 16 and the wedge plunger 15 which is configured separately to allow, only when the rear pressing portion P 1 and rear pressed portion P 2 is in contact with, adopting a structure that integrally slides Thereby, the sliding width of the safety pin 16 in the front-rear direction can be made shorter than the sliding width of the wedge plunger 15 in the front-rear direction. For this reason, the depth (depth in the front-back direction) of the recess 32b for inserting the safety pin can be made small, and the front-back length of the chuck body 11 can be suppressed. As a result, it is possible to maintain the bending rigidity of the chuck device high, shorten the work processing time, and widen the work processing range.
2.第二実施態様のチャック装置
続いて、第二実施態様のチャック装置10について説明する。 2. Chuck Device of Second Embodiment Subsequently, achuck device 10 of a second embodiment will be described.
続いて、第二実施態様のチャック装置10について説明する。 2. Chuck Device of Second Embodiment Subsequently, a
図5及び図6は、第二実施態様のチャック装置10を示した図である。図5は、プランジャ用スライド空間αにおける後側区間S2の後退端位置までウェッジプランジャ15をスライドさせた状態を、図6は、プランジャ用スライド空間αにおける前側区間S1までウェッジプランジャ15をスライドさせ、安全ピン16を抜け止め位置までスライドさせた状態をそれぞれ示している。図5及び図6は、チャック装置10を中心線L1を含む平面で切断した断面図であって、中心線L1よりも一側(上側)のみを示したものである。
5 and 6 are views showing the chuck device 10 according to the second embodiment. Figure 5 is a state in which slide the wedge plunger 15 to the retracted end position of the rear section S 2 of the slide space α plunger, FIG. 6, the slide wedge plunger 15 to the front section S 1 in the slide space α plunger And the safety pin 16 is slid to the retaining position. 5 and 6 are cross-sectional views taken along a plane including the center line L 1 of the chuck device 10, the center line L 1 illustrates only one side (upper side).
第一実施態様のチャック装置10では、プランジャ用スライド空間αの前側区間S1にウェッジプランジャがあるとき(ジョー30でワークWを把持するとき)には、後方押圧部P1と後方被押圧部P2とが当接しておらず、安全ピン16が抜け止め位置にある一方、プランジャ用スライド空間αの前側区間S1から後側区間S2までウェッジプランジャ15がスライドしてきたとき(ジョー30の交換のためにウェッジプランジャ15を後方にスライドさせるとき)に、後方押圧部P1が後方被押圧部P2に対して前方から当接して後方被押圧部P2を後方に押圧することにより、安全ピン16が抜け止め解除位置までスライドするようになっていた。この動作については、第二実施態様のチャック装置10でも同様である。以下においては、上述した第一実施態様のチャック装置10と異なる構成に焦点を絞って、第二実施態様のチャック装置10について説明する。第二実施態様のチャック装置10について特に言及しない構成は、第一実施態様のチャック装置10と同様の構成を採用することができる。
In chuck device 10 of the first embodiment, but when there is a wedge plunger to the front section S 1 of the sliding space α plunger (when gripping a workpiece W in the jaws 30), the rear pressing portion P 1 and rear pressed portion P 2 and is not in contact with the safety while pin 16 is in the retaining position, when the wedge plunger 15 from the front section S 1 of the sliding space α plunger to the rear side section S 2 has been slid in (jaws 30 when) sliding the wedge plunger 15 rearwardly for replacement, by the rear pressing portion P 1 pushes the rear pressed portion P 2 abuts from the front relative to the rear pressed portion P 2 at the rear, The safety pin 16 slides to the retaining release position. This operation is the same in the chuck device 10 of the second embodiment. In the following, the chuck device 10 according to the second embodiment will be described focusing on a configuration different from the chuck device 10 according to the above-described first embodiment. The configuration that does not particularly refer to the chuck device 10 of the second embodiment can employ the same configuration as the chuck device 10 of the first embodiment.
上述した第一実施態様のチャック装置10では、図2に示すように、安全ピン16の後側に配した安全ピン前方付勢部材19によって、安全ピン16を前方に付勢しており、この安全ピン前方付勢部材19の付勢力によって、抜け止め解除位置(図4)にある安全ピン16が抜け止め位置(図2)に復帰するようになっていた。これに対し、第二実施態様のチャック装置10では、図5及び図6に示すように、ウェッジプランジャ15に設けた前方押圧部Q1が、安全ピン16に設けた前方被押圧部Q2に当接して前方被押圧部Q2を前方に押圧することにより、抜け止め解除位置(図5)にある安全ピン16が抜け止め位置(図6)に復帰するようになっている。なお、前方押圧部Q1は、ウェッジプランジャ15に一体的に固定された他の部材に設けてもよく、前方被押圧部Q2は、安全ピン16に一体的に固定された他の部材に設けてもよい。
In the above-described chuck device 10 of the first embodiment, as shown in FIG. 2, the safety pin 16 is urged forward by the safety pin front urging member 19 disposed on the rear side of the safety pin 16. By the urging force of the front urging member 19 of the safety pin, the safety pin 16 at the retaining release position (FIG. 4) returns to the retaining position (FIG. 2). In contrast, in the chucking device 10 in the second embodiment, as shown in FIGS. 5 and 6, the front pressing portion Q 1 provided in the wedge plunger 15, the front pressed portion Q 2 to which is provided the safety pin 16 by pressing the front pressed portion Q 2 forwardly abuts retaining release position safety pin 16 retaining position in (Fig. 5) is adapted to return to (Fig. 6). Incidentally, the front pressing portion Q 1 is, may be provided on another member that is integrally fixed to the wedge plunger 15, the front pressed portion Q 2 is, in addition to the member which is integrally fixed to the safety pin 16 It may be provided.
このように、第二実施態様のチャック装置10では、安全ピン16の前方へのスライド動作(抜け止め位置への復帰動作)が、前方押圧部Q1と前方被押圧部Q2との当接によって行われるようになっている。このため、第二実施態様のチャック装置10では、安全ピン前方付勢部材19を省略することができる。前方押圧部Q1及び前方被押圧部Q2をそれぞれウェッジプランジャ15及び安全ピン16におけるどの場所に設けるかは、特に限定されないが、第二実施態様のチャック装置10では、ウェッジプランジャ本体部15cの前面が前方押圧部Q1となり、安全ピン本体部16aの後面が前方被押圧部Q2となるようにしている。
Thus, contact of the chuck device 10 of the second embodiment, (returning operation to the retaining position) sliding movement of the front of the safety pin 16, the front pressing portion Q 1, the front pressed portion Q 2 It is to be done by. For this reason, in the chuck device 10 of the second embodiment, the safety pin front urging member 19 can be omitted. Whether providing a forward pressing portion Q 1 and the front pressed portion Q 2 anywhere in the wedge plunger 15 and a safety pin 16, respectively, but not limited to, the chuck device 10 of the second embodiment, the wedge plunger body portion 15c front front pressing portions Q 1, and the rear face of the safety pin body portion 16a is set to be the front pressed portion Q 2.
また、第二実施態様のチャック装置10では、前側区間S1にウェッジプランジャ15があるときでも、ウェッジプランジャ15が後方にスライドして、前方押圧部Q1と前方被押圧部Q2とが当接しなくなると、安全ピン16が後方にスライドできる状態となってしまう。このため、チャック装置10に生じた振動等によって、安全ピン16が抜け止め位置から動く虞がある。そこで、本実施形態では、安全ピン16を抜け止め位置で保持するための安全ピン保持手段を設けている。第二実施態様のチャック装置10において、安全ピン保持手段は、図6に示すように、安全ピン16の外周部(より厳密には、安全ピン本体部16aの外周部)に設けた位置保持用溝部16a1と、位置保持用溝部16a1に嵌合するための位置保持用嵌合体20と、位置保持用嵌合体20を安全ピン16側に付勢するための嵌合体付勢部材21とで構成している。この安全ピン保持手段は、安全ピン16が抜け止め位置(図6)にスライドしてくると、位置保持用嵌合体20が位置保持用溝部16a1に嵌合することで、安全ピン16を抜け止め位置で保持するものとなっている。
Further, the chuck device 10 of the second embodiment, even when there is a wedge plunger 15 in the front section S1, the wedge plunger 15 slides rearward in contact with the front pressing portion Q 1, the front pressed portion Q 2 is brought If it disappears, the safety pin 16 will be able to slide backward. For this reason, there is a possibility that the safety pin 16 may move from the retaining position due to vibration or the like generated in the chuck device 10. Therefore, in the present embodiment, safety pin holding means for holding the safety pin 16 at the retaining position is provided. In the chuck device 10 of the second embodiment, as shown in FIG. 6, the safety pin holding means includes a position holding member provided on the outer periphery of the safety pin 16 (more precisely, on the outer periphery of the safety pin main body 16a). The groove 16 a 1 , the position holding fitting 20 for fitting into the position holding groove 16 a 1, and the fitting body urging member 21 for biasing the position holding fitting 20 toward the safety pin 16. Make up. When the safety pin 16 slides to the retaining position (FIG. 6), the safety pin holding means engages with the position holding fitting 20 in the position holding groove 16 a 1 , thereby pulling out the safety pin 16. It is held at the stop position.
位置保持用溝部16a1は、その内壁面が傾斜して設けられていることに加えて、位置保持用嵌合体20は、球状のものとしている。第二実施態様のチャック装置10においては、位置保持用嵌合体20をスチールボールで構成している。このため、チャック装置10に生じた振動程度では、位置保持用溝部16a1から位置保持用嵌合体20が外れることなく、安全ピン16が抜け止め位置で保持されるものの、ウェッジプランジャ15を後方にスライドさせて、後方押圧部P1が後方被押圧部P2に当接した状態となり、ウェッジプランジャ15から安全ピン16に後ろ向きの押圧力が加わると、位置保持用溝部16a1から位置保持用嵌合体20が外れるようになっている。換言すると、ウェッジプランジャ15から安全ピン16に後ろ向きの押圧力が加わると、安全ピン16の抜け止め位置での保持が解除され、安全ピン16が後方にスライドすることができる状態となるようになっている。位置保持用溝部16a1は、安全ピン本体部16aの外周部の全周部に亘って環状に設けられているため、安全ピン16がその中心線回りに回転したとしても、位置保持用嵌合体20が位置保持用溝部16a1に嵌合することができるようになっている。
Position holding grooves 16a 1, in addition to the inner wall surface is provided to be inclined, assembly 20 fit for holding the position is assumed spherical. In the chuck device 10 of the second embodiment, the position holding fitting 20 is made of a steel ball. Therefore, in order vibration generated in the chuck device 10, without fitting body 20 is out of a position holding from the groove 16a 1 for holding the position, but is held in locking position missing safety pin 16, the wedge plunger 15 rearwardly slide, a state in which the rear pressing portion P 1 is in contact with the rear pressed portion P 2, when the pressing force of the rearward is applied to the safety pin 16 from the wedge plunger 15, fitted for holding the position from the groove 16a 1 for holding the position The union 20 comes off. In other words, when a rearward pressing force is applied to the safety pin 16 from the wedge plunger 15, the holding of the safety pin 16 at the retaining position is released, and the safety pin 16 can slide backward. ing. Position holding grooves 16a 1, because provided annularly along the entire circumference of the outer peripheral portion of the safety pin body portion 16a, also as a safety pin 16 is rotated about its centerline, fit for holding the position coalesce 20 is adapted to be able to fit in the groove portion 16a 1 for holding the position.
第二実施態様のチャック装置10は、上述したように、安全ピン前方付勢部材19を設ける必要がないものであるため、安全ピン16の後側に安全ピン前方付勢部材19を設けるスペースを確保する必要がないものとなっている。このため、第二実施態様のチャック装置10は、第一実施態様のチャック装置10と比較して、チャックボディ11の前後長を短く抑えて、チャック装置10の曲げ剛性を高く維持することができるというメリットを有している。
As described above, the chuck device 10 according to the second embodiment does not require the provision of the safety pin front urging member 19, and therefore requires a space for providing the safety pin front urging member 19 behind the safety pin 16. It is not necessary to secure them. For this reason, the chuck device 10 of the second embodiment can keep the front-rear length of the chuck body 11 short and maintain the bending rigidity of the chuck device 10 high as compared with the chuck device 10 of the first embodiment. It has the advantage that.
3.その他の実施形態
・後方押圧部P1及び前方押圧部Q1は、それぞれ、ウェッジプランジャ15と安全ピン16の何れにも一体的に固定されていない別の部材を介して後方被押圧部P2及び前方被押圧部Q2を押圧してもよい。
・ジョー30に安全ピン挿入用凹部32bを設ける代わりに突起を設け、ジョー30が抜けようとするときに、この突起と安全ピン16を当接させてジョー30が抜け出すのを防いでもよい。 3. Other embodiments and backward pressing part P 1 and the front pressing portion Q 1 is, respectively, thewedge plunger 15 in any of the safety pin 16 through another member which is not integrally fixed rear pressed and portion P 2 and forward the pressed portion Q 2 may be pressed.
Thejaw 30 may be provided with a protrusion instead of the safety pin insertion recess 32b, and when the jaw 30 is about to come off, the protrusion may be brought into contact with the safety pin 16 to prevent the jaw 30 from coming out.
・後方押圧部P1及び前方押圧部Q1は、それぞれ、ウェッジプランジャ15と安全ピン16の何れにも一体的に固定されていない別の部材を介して後方被押圧部P2及び前方被押圧部Q2を押圧してもよい。
・ジョー30に安全ピン挿入用凹部32bを設ける代わりに突起を設け、ジョー30が抜けようとするときに、この突起と安全ピン16を当接させてジョー30が抜け出すのを防いでもよい。 3. Other embodiments and backward pressing part P 1 and the front pressing portion Q 1 is, respectively, the
The
:10:チャック装置、:11:チャックボディ、:11a:ジョー取付部、:15:ウェッジプランジャ、:15a:カム凸条、:15b:カム連結部、:15c:ウェッジプランジャ本体部、:16:安全ピン、:16a:安全ピン本体部、:16a1:位置保持用溝部、:16b:後方軸部、:16c:後方拡径部、:19:安全ピン前方付勢部材、:20:位置保持用嵌合体、:21:嵌合体付勢部材、:22:プランジャの構成部材、:30:ジョー、:31:ソフトジョー、:32:マスタージョー、:32a:カム溝、:32b:安全ピン挿入用凹部、:40:ジョー自動交換装置のジョー作用部、:P1:後方押圧部、:P2:後方被押圧部、:Q1:前方押圧部、:Q2:前方被押圧部、:S1:前側区間、:S2:後側区間、:W:ワーク、:α:プランジャ用スライド空間
: 10: chuck device, 11: chuck body, 11a: jaw mounting portion, 15: wedge plunger, 15a: cam ridge, 15b: cam connecting portion, 15c: wedge plunger body, 16: safety pin,: 16a: safety pin main body,: 16a 1: groove for holding the position,: 16b: rear shaft part,: 16c: rear enlarged-diameter portion, 19: safety pin forward biasing member,: 20: position holding : 21: Fitting member biasing member,: 22: Plunger constituent member,: 30: Jaw,: 31: Soft jaw,: 32: Master jaw,: 32a: Cam groove,: 32b: Safety pin insertion use recess: 40: jaw working portion of the jaws autochanger,: P 1: the rear pressing portion: P 2: rear pressed portion,: Q 1: front pressing portion: Q 2: front pressed part,: S 1 : front section,: S 2 : Rear section,: W: Work, α: Slide space for plunger
Claims (9)
- ワークを把持するための複数のジョーと、チャックボディと、ウェッジプランジャと、安全ピンを備えるチャック装置であって、
前記チャックボディは、前記複数のジョーを互いに近接する内側位置と互いに離反する外側位置との間でスライド可能な状態で取り付ける複数のジョー取付部を前面側に放射状に備え、
前記ウェッジプランジャは、前記ジョーに対してカム連結された状態で、前記チャックボディの内側に設けられたプランジャ用スライド空間で前後方向にスライドすることにより、前記ジョーを内外方向にスライドさせるように構成され、
前記ウェッジプランジャのスライドに伴って、前記カム連結の連結と解除が切り替わるように構成され、
前記安全ピンは、前後方向にスライド可能な状態で前記チャックボディの内側に収容され、
前記ウェッジプランジャのスライドに伴って、前記ジョー取付部の外方への前記ジョーの抜け出しを防ぐ抜け止め位置と、前記抜け出しを防がない抜け止め解除位置の間を前記安全ピンがスライドするように構成され、
前記カム連結が解除される方向に前記ウェッジプランジャがスライドしたときに前記安全ピンが前記抜け止め位置から前記抜け止め解除位置にスライドするように構成される、チャック装置。 A plurality of jaws for gripping a workpiece, a chuck body, a wedge plunger, a chuck device including a safety pin,
The chuck body includes a plurality of jaw mounting portions radially mounted on a front surface side for mounting the plurality of jaws slidably between an inner position close to each other and an outer position separated from each other,
The wedge plunger is configured to slide the jaw in and out by sliding forward and backward in a plunger slide space provided inside the chuck body while being cam-connected to the jaw. And
With the slide of the wedge plunger, the connection and release of the cam connection is configured to be switched,
The safety pin is housed inside the chuck body so as to be slidable in the front-rear direction,
As the wedge plunger slides, the safety pin slides between a retaining position that prevents the jaw from coming out of the jaw mounting portion and a retaining release position that does not prevent the jaw from coming out. Composed,
A chuck device configured to slide the safety pin from the retaining position to the retaining release position when the wedge plunger slides in a direction in which the cam connection is released. - 請求項1に記載のチャック装置であって、
前記プランジャ用スライド空間における前側区間で前記ウェッジプランジャが前後方向にスライドする際には、前記カム連結が維持されて、前記ジョーが前記ジョー取付部に沿って内外方向にスライドする一方、
前記プランジャ用スライド空間における後側区間まで前記ウェッジプランジャをスライドさせると、前記カム連結が解除されて、前記ジョーが前記ウェッジプランジャに干渉されることなく前記ジョー取付部の外端側から外方に取り外すことが可能な状態となり、
前記前側区間に前記ウェッジプランジャがあるときには、前記安全ピンが前記抜け止め位置に位置し、
前記前側区間から前記後側区間まで前記ウェッジプランジャがスライドすると、このスライドに伴って、前記安全ピンが前記抜け止め解除位置までスライドするように構成される、チャック装置。 The chuck device according to claim 1, wherein
When the wedge plunger slides in the front-rear direction in the front section in the plunger slide space, the cam connection is maintained, and the jaws slide inward and outward along the jaw mounting portion,
When the wedge plunger is slid to the rear section in the plunger slide space, the cam connection is released, and the jaws are moved outward from the outer end side of the jaw mounting portion without being interfered by the wedge plunger. It can be removed,
When the wedge plunger is in the front section, the safety pin is located at the retaining position,
A chuck device configured such that when the wedge plunger slides from the front section to the rear section, the safety pin slides to the retaining release position with the sliding. - 請求項2に記載のチャック装置であって、
前記安全ピンを後方に押圧するための後方押圧部P1が、前記ウェッジプランジャ又はこれに一体的に固定された他の部材に設けられ、
前記後方押圧部P1によって押圧される後方被押圧部P2が、前記安全ピン又はこれに一体的に固定された他の部材に設けられ、
前記前側区間に前記ウェッジプランジャがあるときには、前記後方押圧部P1と前記後方被押圧部P2とが当接しておらず、前記安全ピンが前記抜け止め位置に位置し、
前記前側区間から前記後側区間まで前記ウェッジプランジャがスライドしてきたときに、前記後方押圧部P1が前記後方被押圧部P2に対して前方から当接して前記後方被押圧部P2を直接又は別の部材を介して後方に押圧することにより、前記安全ピンが前記抜け止め解除位置までスライドするように構成される、チャック装置。 The chuck device according to claim 2, wherein
Said safety pin and the rear pressing portion P 1 for pressing the rear, the wedge plunger or to provided other members which are integrally fixed,
The rear pressing portion rear pressed portion P 2 which is pressed by P 1 is, the safety pin or its provided to other member which is integrally fixed,
Wherein when there is the wedge plunger to the front section, located in the rear pressing portion P 1 and said rear pressed portion P 2 is not in contact with the safety pin missing the stop position,
Wherein when the wedge plunger from the front section to said rear section has been slid, the rear pressing portion P 1 abuts against the rear pressed portion P 2 directly from the front to the rear pressed portion P 2 Alternatively, the chucking device is configured to slide backward to the retaining release position by pressing backward through another member. - 請求項1~請求項3の何れか1つに記載のチャック装置であって、
前記抜け止め位置では、前記安全ピンの前端部が前記ジョーの後面側に設けられた安全ピン挿入用凹部に挿入され、
前記抜け止め解除位置では、前記安全ピンの前端部が前記安全ピン挿入用凹部に挿入されていない、チャック装置。 The chuck device according to any one of claims 1 to 3, wherein
At the retaining position, the front end of the safety pin is inserted into a safety pin insertion recess provided on the rear surface side of the jaw,
The chuck device, wherein the front end portion of the safety pin is not inserted into the safety pin insertion recess at the retaining release position. - 請求項1~請求項4の何れか1つに記載のチャック装置であって、
前記安全ピンが、安全ピン本体部と、前記安全ピン本体部の後端面から後方に延びる後方軸部と、前記後方軸部の後端部に設けられた後方拡径部を備え、
前記ウェッジプランジャが、前記ジョーに対して前記カム連結されるカム連結部と、前記カム連結部の後方に設けられ、前記安全ピンの後方軸部が挿通されるウェッジプランジャ本体部を備える、チャック装置。 The chuck device according to any one of claims 1 to 4, wherein
The safety pin includes a safety pin main body, a rear shaft extending rearward from a rear end surface of the safety pin main body, and a rear enlarged portion provided at a rear end of the rear shaft.
A chuck device, wherein the wedge plunger includes a cam connecting portion that is cam-connected to the jaw, and a wedge plunger main body portion provided behind the cam connecting portion and through which a rear shaft portion of the safety pin is inserted. . - 請求項1~請求項5の何れか1つに記載のチャック装置であって、
前記安全ピンを前方に付勢するための安全ピン前方付勢部材が設けられる、チャック装置。 The chuck device according to any one of claims 1 to 5, wherein
A chuck device provided with a safety pin front urging member for urging the safety pin forward. - 請求項2に記載のチャック装置であって、
前記後側区間から前記前側区間に前記ウェッジプランジャがスライドすると、このスライドに伴って、前記安全ピンが抜け止め位置までスライドするように構成される、チャック装置。 The chuck device according to claim 2, wherein
A chuck device configured such that when the wedge plunger slides from the rear section to the front section, the safety pin slides to a retaining position with the sliding. - 請求項7に記載のチャック装置であって、
前記安全ピンを前方に押圧するための前方押圧部Q1が、前記ウェッジプランジャ又はこれに一体的に固定された他の部材に設けられ、
前記前方押圧部Q1によって押圧される前方被押圧部Q2が、前記安全ピン又はこれに一体的に固定された他の部材に設けられ、
前記後側区間から前記前側区間に前記ウェッジプランジャがスライドしてくるときに、前方押圧部Q1が前方被押圧部Q2に対して後方から直接又は別の部材を介して当接して前方被押圧部Q2を前方に押圧することにより、前記安全ピンが前記抜け止め位置までスライドするように構成される、チャック装置。 The chuck device according to claim 7, wherein
Said safety pin to the front pressing portion to Q 1 for pressing forward, the wedge plunger or to provided other members which are integrally fixed,
The front pressing portion Q front pressed portion Q 2 to which is pressed by a 1, the safety pin or its provided to other member which is integrally fixed,
When the wedge plunger to the front section from the rear section comes to slide forward the contacts directly or via another member from the rear relative to the front press portion Q 1 is forward pressed portion Q 2 by pressing the pressing portion Q 2 forward, configured such that the safety pin is slid to the retaining position the chuck device. - 請求項1~請求項8の何れか1つに記載のチャック装置であって、
安全ピン保持手段を備え、
前記安全ピン保持手段は、前記安全ピンを前記抜け止め位置で保持可能に構成され、かつ前記ウェッジプランジャが前記安全ピンを後方にスライドする際には、前記安全ピンの前記抜け止め位置での保持を解除するように構成される、チャック装置。 The chuck device according to any one of claims 1 to 8, wherein
With safety pin holding means,
The safety pin holding means is configured to be able to hold the safety pin at the retaining position, and to hold the safety pin at the retaining position when the wedge plunger slides the safety pin backward. A chuck device configured to release the chuck.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020548346A JPWO2020066566A1 (en) | 2018-09-27 | 2019-09-09 | Chuck device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018-181687 | 2018-09-27 | ||
JP2018181687 | 2018-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020066566A1 true WO2020066566A1 (en) | 2020-04-02 |
Family
ID=69953446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/035337 WO2020066566A1 (en) | 2018-09-27 | 2019-09-09 | Chuck apparatus |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPWO2020066566A1 (en) |
TW (1) | TW202017680A (en) |
WO (1) | WO2020066566A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111644646B (en) * | 2020-06-16 | 2021-05-11 | 徐露露 | Self-centering clamping device for stainless steel thin-wall pipe fitting |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54153389A (en) * | 1978-05-19 | 1979-12-03 | Roehm Guenter H | Wedgeeshaped chuck drived by power |
JPS5822607A (en) * | 1981-07-24 | 1983-02-10 | パウル・フオルカルト・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウング・ウント・コンパニ・コマンデイ−トゲゼルシヤフト | Power operating chuck |
JPH05269612A (en) * | 1992-03-23 | 1993-10-19 | Howa Mach Ltd | Chuck |
JP2015013338A (en) * | 2013-07-04 | 2015-01-22 | 株式会社北川鉄工所 | Workpiece gripper for automatically exchanging jaw |
-
2019
- 2019-09-09 WO PCT/JP2019/035337 patent/WO2020066566A1/en active Application Filing
- 2019-09-09 JP JP2020548346A patent/JPWO2020066566A1/en active Pending
- 2019-09-11 TW TW108132719A patent/TW202017680A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54153389A (en) * | 1978-05-19 | 1979-12-03 | Roehm Guenter H | Wedgeeshaped chuck drived by power |
JPS5822607A (en) * | 1981-07-24 | 1983-02-10 | パウル・フオルカルト・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフトウング・ウント・コンパニ・コマンデイ−トゲゼルシヤフト | Power operating chuck |
JPH05269612A (en) * | 1992-03-23 | 1993-10-19 | Howa Mach Ltd | Chuck |
JP2015013338A (en) * | 2013-07-04 | 2015-01-22 | 株式会社北川鉄工所 | Workpiece gripper for automatically exchanging jaw |
Also Published As
Publication number | Publication date |
---|---|
TW202017680A (en) | 2020-05-16 |
JPWO2020066566A1 (en) | 2021-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4726618B2 (en) | Tape holding device | |
JP6177640B2 (en) | Chuck device with pull-in mechanism | |
JP2014037050A (en) | Tool holder for storing and locking tool tapered part on tool magazine, lock releasing device, and tool magazine | |
US10363609B2 (en) | Self-tightening rotary tool holding system | |
WO2020066566A1 (en) | Chuck apparatus | |
US8246280B2 (en) | Apparatus for chucking a tool or workpiece having a collet | |
US20180214958A1 (en) | Drill with removable chuck | |
KR100869138B1 (en) | Mandrel chuck | |
EP1883486B1 (en) | Tool-holder chuck for equipping a rotating machine, in particular of the impact wrench type | |
JP6654405B2 (en) | Chuck device | |
JP4156209B2 (en) | Compound processing equipment | |
JP6208482B2 (en) | Work gripping device that automatically replaces jaws. | |
JP7294885B2 (en) | Spindle tool clamping device | |
JPH11347752A (en) | Friction welding machine | |
KR20220018032A (en) | Clamping device for tool holder | |
JP2011255460A (en) | Machine tool | |
JP2519176Y2 (en) | Dustproof device for quick change chuck | |
JP2013226640A (en) | Chuck for wheel | |
JP5049850B2 (en) | Friction welding machine chuck device and work grip opening method | |
JP2010253618A (en) | Chuck device | |
JP4267430B2 (en) | Workpiece gripping device | |
JPS6315085B2 (en) | ||
JP2012218117A (en) | Holding claw mounting structure of chuck device | |
CN113696143B (en) | Bit clamping device, electric tool and assembling method of bit clamping device | |
JP5446958B2 (en) | Chuck |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19865338 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020548346 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19865338 Country of ref document: EP Kind code of ref document: A1 |