CN111571497B - Automatic clamping device and automatic clamping mechanism - Google Patents
Automatic clamping device and automatic clamping mechanism Download PDFInfo
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- CN111571497B CN111571497B CN202010353983.2A CN202010353983A CN111571497B CN 111571497 B CN111571497 B CN 111571497B CN 202010353983 A CN202010353983 A CN 202010353983A CN 111571497 B CN111571497 B CN 111571497B
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- clamping
- hole
- arm
- transmission rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
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Abstract
The invention discloses an automatic clamping mechanism, which comprises two clamping units and a clamping driving mechanism, wherein the two clamping units are symmetrically arranged, and the clamping driving mechanism is used for driving the two clamping units to perform clamping or loosening actions; the clamping unit comprises a clamping arm and a clamping arm support, a chuck is arranged at the front end of the clamping arm, a through hole is formed in the middle of the clamping arm, and a bolt matched with the through hole is arranged on the clamping arm support to enable the clamping arm to rotate around the bolt; the clamping driving mechanism comprises a transmission rod positioned between the two clamping units, the axis of the transmission rod is parallel to the symmetrical surfaces of the two clamping units, the front end of the transmission rod is provided with a connector, and the rear end of the transmission rod is provided with a power device for driving the transmission rod to do linear motion along the axial direction; the connector with two be equipped with double hinge connecting rod between the centre gripping arm respectively, the both ends of double hinge connecting rod respectively with the connector with correspond the rear end of centre gripping arm is articulated to be connected. The invention also discloses an automatic clamping device.
Description
Technical Field
The invention relates to a clamp, in particular to an automatic clamping device and an automatic clamping mechanism.
Background
The corner pieces are riveted with the stringers and the skin respectively in the aircraft panel structure to transfer loads. In the construction of certain aircraft panels, flanged corner piece constructions in the form of frames are present. When the angle piece is assembled, the angle piece is mainly positioned and drilled by a worker holding the angle piece, and a part of tooling also adopts a form of auxiliary assembly by using a quick clamp. These mounting methods have the following problems:
(1) the assembly form of the hand-held by workers can cause that the corner piece is not firmly held, so that the installation position is deflected, and the assembly quality of the wallboard is influenced;
(2) the corner piece is often installed in a narrow space, workers need to hold the corner piece and perform operations such as hole making and the like, and the operation is inconvenient;
(3) in the wall plate of the machine body, the number of corner pieces is large, and the operation workload of workers is large;
(4) the existing finished product quick clamp can adapt to a product assembled by flanging angle pieces, the opening angle of a clamping head is often very large when the clamp is opened, the space is occupied, the angle pieces are not easy to install and position, and the interference is easy to cause.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an automatic clamping device and an automatic clamping mechanism, which can meet the clamping and fixing requirements of workpieces, have the advantage of a small opening angle of a chuck, and can be suitable for being used in a narrow space of an aircraft component and a region with a complex structure.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention firstly provides an automatic clamping mechanism which comprises two clamping units which are symmetrically arranged and a clamping driving mechanism for driving the two clamping units to do clamping or loosening action;
the clamping unit comprises a clamping arm and a clamping arm support, a chuck is arranged at the front end of the clamping arm, a through hole is formed in the middle of the clamping arm, and a bolt matched with the through hole is arranged on the clamping arm support to enable the clamping arm to rotate around the bolt;
the clamping driving mechanism comprises a transmission rod positioned between the two clamping units, the axis of the transmission rod is parallel to the symmetrical surfaces of the two clamping units, the front end of the transmission rod is provided with a connector, and the rear end of the transmission rod is provided with a power device for driving the transmission rod to do linear motion along the axial direction;
the connector with two be equipped with double hinge connecting rod between the centre gripping arm respectively, the both ends of double hinge connecting rod respectively with the connector with correspond the rear end of centre gripping arm is articulated to be connected.
Further, the power device adopts a cylinder or an electric cylinder.
Furthermore, the two clamping arm supports belonging to the two clamping units are arranged in a split manner or integrally.
Further, the front end of centre gripping arm be equipped with the perforation of through-hole axis vertically, the chuck include the rubber head and with rubber head fixed connection's screw rod, the screw rod passes adopt the nut installation to fix after the perforation.
Further, be equipped with on the centre gripping arm support with centre gripping arm complex recess with be located respectively the screw counter bore of recess both sides, be equipped with axis and rather than vertically pinhole in the screw counter bore, the pinhole link up the lateral wall of recess, and be located respectively pinhole coaxial setting on the wall of recess both sides, these two be equipped with between the pinhole and pass the bolt of through-hole.
The invention also provides an automatic clamping device which comprises a clamping plate, wherein the clamping plate is provided with a yielding hole, one side of the yielding hole is provided with a clamping station, the other side of the yielding hole is provided with an installation station, and the installation station is internally provided with the automatic clamping mechanism;
the mounting station is internally provided with a mounting hole communicated with the abdicating hole, the transmission rod is sleeved in the mounting hole, and the front end of the transmission rod extends into the abdicating hole and enables the connector to be positioned in the abdicating hole; the two clamping units are respectively positioned on two sides of the clamping plate, the two clamping arm supports are respectively and fixedly installed on the side walls of the two sides of the clamping plate, and the power device is fixedly installed on the clamping plate.
Further, the mounting hole comprises a large-diameter section and a small-diameter section, the large-diameter section is located at the rear end of the mounting hole, the small-diameter section is internally provided with a linear bearing which is sleeved on the transmission rod and is in transition fit with the transmission rod, the rear end of the linear bearing extends into the large-diameter section, the large-diameter section is internally provided with a sleeve which is sleeved outside the linear bearing, and a limiting structure used for preventing the linear bearing from axially moving is arranged between the sleeve and the linear bearing.
Furthermore, limit structure is including installing jump ring on the linear bearing, the jump ring is located telescopic front end terminal surface and major diameter section are located with the shaft shoulder of minor diameter section between.
Furthermore, the power device is provided with a connecting plate, and the connecting plate is fixedly installed on the rear end face of the installation hole.
The invention has the beneficial effects that:
according to the automatic clamping mechanism, the middle part of the clamping arm is arranged on the clamping arm support in a rotating fit manner through the bolt, so that the opening angle of the clamping arm in the clamping action and the loosening action can be controlled; specifically, when the clamping action is performed, the transmission rod moves forwards in the axial direction, the two double-hinged connecting rods synchronously rotate around the connecting heads in the opposite directions, the distance between the two double-hinged connecting rods and one end, hinged with the clamping arm, of the two double-hinged connecting rods is increased, and the clamping arm rotates under the action of the double-hinged connecting rods, so that the distance between the two clamping heads is reduced; when the clamping mechanism is in loosening action, the transmission rod moves backwards in the axial direction, the two double-hinged connecting rods synchronously rotate around the connecting heads in the opposite directions, so that the distance between the two double-hinged connecting rods and one end, hinged with the clamping arm, of the two double-hinged connecting rods is reduced, and the clamping arm rotates under the action of the double-hinged connecting rods, so that the distance between the two clamping heads is increased; namely, the automatic clamping mechanism can realize the clamping purposes of forward clamping and backward loosening.
According to the automatic clamping device, the workpiece to be clamped is positioned on the clamping station by arranging the abdicating hole on the clamping plate and respectively arranging the clamping station and the mounting station on two sides of the abdicating hole, and the workpiece can be clamped or loosened by using the automatic clamping mechanism; because the opening angle of the clamping arm in the clamping action and the loosening action can be controlled, the clamping arm can be suitable for being used in narrow space of airplane components and areas with complex structures.
The automatic clamping device of the invention also has the following advantages:
1) the automatic clamping is realized by adopting the driving of a power device, and an operation button can be arranged near the clamping mechanism, so that the operation of workers is facilitated, and the production efficiency is improved;
2) the distance between the two chucks can be adjusted, so that the included angle between the clamping arm and the connecting rod is more than or equal to 90 degrees when the workpiece is in a clamping state, a force-increasing structure is formed, and the diagonal sheet can be reliably clamped;
3) parts such as linear bearing, sleeve, transfer line adopt the embedded installation form inside the cardboard, save installation space, are fit for the narrow position characteristics in fillet assembly space.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic structural view of an embodiment of an automatic clamping device according to the present invention;
FIG. 2 is a perspective view of the automatic clamping device of the present embodiment;
FIG. 3 is a schematic structural view of the automatic clamping mechanism;
FIG. 4 is a schematic view of the chuck;
FIG. 5 is a schematic view of the clamp arm;
fig. 6 is a schematic structural view of the clamp arm bracket.
Description of reference numerals:
1-a chuck; 1 a-a rubber head; 1 b-a screw; 2. a clamp arm; 2 a-a through hole; 2 b-perforation; 3-a clamping arm support; 3 a-a groove; 3 b-screw countersunk holes; 3 c-pin holes; 4-a double-hinged connecting rod; 5-a connector; 6-a transmission rod; 7-a linear bearing; 8-a sleeve; 9-a connecting plate; 10-a power plant; 11-a clamping plate; 11 a-a relief hole; 11 b-a large diameter section; 11 c-small diameter section; 12-a workpiece; 13-circlip.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Fig. 1 is a schematic structural view of an embodiment of the automatic clamping device according to the present invention. The automatic clamping device of this embodiment, including cardboard 11, be equipped with the hole of stepping down 11a on the cardboard 11, one side of the hole of stepping down 11a is equipped with and presss from both sides tight station, the opposite side is equipped with the installation station, is equipped with automatic clamping mechanism in the installation station.
The automatic clamping mechanism of the embodiment comprises two clamping units which are symmetrically arranged and a clamping driving mechanism which is used for driving the two clamping units to do clamping or loosening actions. The clamping unit of this embodiment includes centre gripping arm 2 and centre gripping arm support 3, and the front end of centre gripping arm 2 is equipped with chuck 1, and the middle part of centre gripping arm 2 is equipped with through-hole 2a, is equipped with on the centre gripping arm support 3 with through-hole 2a complex bolt and make centre gripping arm 2 can rotate around the bolt.
The centre gripping arm support 3 of this embodiment is equipped with on the centre gripping arm support 3 with 2 complex recesses of centre gripping arm 3a with be located the countersunk screw hole 3b of recess 3a both sides respectively, be equipped with axis and rather than vertically pinhole 3c on the countersunk screw hole 3 b's the counter bore lateral wall, pinhole 3a link up the lateral wall of recess 3a, and be located the coaxial setting of pinhole 3a on the recess 3a both sides wall respectively, be equipped with the bolt that passes through 2a of through-hole between these two pinholes 3a, but the outer nylon cover that overlaps of bolt, centre gripping arm 2 can rotate around the bolt. The axis of the screw countersunk hole 3b of the present embodiment is perpendicular to the length direction of the recess 3 a.
The clamping driving mechanism comprises a transmission rod 6 positioned between the two clamping units, the axis of the transmission rod 6 is parallel to the symmetrical surfaces of the two clamping units, the front end of the transmission rod 6 is provided with a connector 5, and the rear end of the transmission rod 6 is provided with a power device 10 for driving the transmission rod 6 to do linear motion along the axial direction; the power device 10 adopts an air cylinder or an electric cylinder, and the power device 10 of the embodiment adopts an air cylinder. Of course, the power device 10 can be implemented in other ways, which are not repeated.
A double-hinged connecting rod 4 is respectively arranged between the connector 5 and the two clamping arms 2, and two ends of the double-hinged connecting rod 4 are respectively hinged with the connector 5 and the rear ends of the corresponding clamping arms 2.
A mounting hole communicated with the abdicating hole 11a is formed in the mounting station, the transmission rod 6 is sleeved in the mounting hole, and the front end of the transmission rod 6 extends into the abdicating hole 11a and enables the connector 5 to be positioned in the abdicating hole 11 a; the two clamping units are respectively located on two sides of the clamping plate 11, the two clamping arm supports 3 are respectively and fixedly installed on side walls of two sides of the clamping plate 11, and the power device 10 is fixedly installed on the clamping plate 11.
According to the automatic clamping mechanism, the middle part of the clamping arm is arranged on the clamping arm support in a rotating fit manner through the bolt, so that the opening angle of the clamping arm in the clamping action and the loosening action can be controlled; specifically, when the clamping action is performed, the transmission rod moves forwards in the axial direction, the two double-hinged connecting rods synchronously rotate around the connecting heads in the opposite directions, the distance between the two double-hinged connecting rods and one end, hinged with the clamping arm, of the two double-hinged connecting rods is increased, and the clamping arm rotates under the action of the double-hinged connecting rods, so that the distance between the two clamping heads is reduced; when the clamping mechanism is in loosening action, the transmission rod moves backwards in the axial direction, the two double-hinged connecting rods synchronously rotate around the connecting heads in the opposite directions, so that the distance between the two double-hinged connecting rods and one end, hinged with the clamping arm, of the two double-hinged connecting rods is reduced, and the clamping arm rotates under the action of the double-hinged connecting rods, so that the distance between the two clamping heads is increased; namely, the automatic clamping mechanism can realize the clamping purposes of forward clamping and backward loosening.
Further, the two clamping arm brackets 3 belonging to the two clamping units are arranged separately or integrally. The two clamping arm supports 3 of the present embodiment are arranged in a split manner, and even if the two clamping arm supports 3 are arranged in a split manner, the relative position relationship between the two clamping arm supports 3 should be kept unchanged during use.
Further, the front end of the clamping arm 2 is provided with a through hole 2b vertical to the axis of the through hole 2a, the chuck 1 comprises a rubber head 1a and a screw 1b fixedly connected with the rubber head 1a, and the screw 1b is installed and fixed by a nut after penetrating through the through hole. Therefore, the installation position of the chuck 1 can be adjusted according to actual site, so that the chuck can meet the requirement of clamping the workpiece 12, namely the distance between the two chucks can be adjusted, the included angle between the clamping arm and the connecting rod is more than or equal to 90 degrees when the workpiece is in a clamping state, a force-increasing structure is formed, and the diagonal piece can be reliably clamped. The workpiece 12 of this embodiment is an aircraft horn.
Further, the mounting hole includes the major diameter section 11b that is located the rear end and the minor diameter section 11c that is located the front end, is equipped with the linear bearing 7 of suit on the transfer line 6 and transition fit between with the transfer line 6 in the minor diameter section 11c, and the rear end of linear bearing 7 extends and stretches into in the major diameter section 11b, is equipped with the sleeve 8 of suit outside the linear bearing 7 in the major diameter section 11b, is equipped with the limit structure who is used for preventing linear bearing 7 axial float between sleeve 8 and the linear bearing 7. The limiting structure of this embodiment includes the jump ring 13 of installing on linear bearing 7, and jump ring 13 is located between the front end terminal surface of sleeve 8 and the shaft shoulder of big footpath section 11b and path section 11 c.
Further, a connecting plate 9 is arranged on the power device 10, and the connecting plate 9 is fixedly installed on the rear end face of the installation hole. Specifically, the rear end of the sleeve 8 of the present embodiment abuts against the connecting plate 9 to realize the limiting.
According to the automatic clamping device, the workpiece to be clamped is positioned on the clamping station by arranging the abdicating hole on the clamping plate and arranging the clamping station and the mounting station on two sides of the abdicating hole respectively, and the workpiece can be clamped or loosened by using the automatic clamping mechanism; because the opening angle of the clamping arm in the clamping action and the loosening action can be controlled, the clamping arm can be suitable for being used in narrow space of airplane components and areas with complex structures.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. An automatic clamping device, its characterized in that: the automatic clamping device comprises a clamping plate (11), wherein an abdicating hole (11a) is formed in the clamping plate (11), a clamping station is arranged on one side of the abdicating hole (11a), an installation station is arranged on the other side of the abdicating hole, and an automatic clamping mechanism is arranged in the installation station; the clamping station is arranged on the clamping plate (11), and the automatic clamping mechanism is used for clamping or loosening a workpiece on the clamping station;
the automatic clamping mechanism comprises two clamping units which are symmetrically arranged and a clamping driving mechanism for driving the two clamping units to perform clamping or loosening actions;
the clamping unit comprises a clamping arm (2) and a clamping arm support (3), a chuck (1) is arranged at the front end of the clamping arm (2), a through hole (2a) is formed in the middle of the clamping arm (2), a bolt matched with the through hole (2a) is arranged on the clamping arm support (3), and the clamping arm (2) can rotate around the bolt;
a groove (3a) matched with the clamping arm (2) is formed in the clamping arm support (3); the two clamping arm brackets (3) are positioned between the two clamping arms (2), and the plug pin is parallel to the clamping plate (11);
the clamping driving mechanism comprises a transmission rod (6) positioned between the two clamping units, the axis of the transmission rod (6) is parallel to the symmetrical surfaces of the two clamping units, the front end of the transmission rod (6) is provided with a connector (5), and the rear end of the transmission rod (6) is provided with a power device (10) for driving the transmission rod to do linear motion along the axial direction;
a double-hinge connecting rod (4) is arranged between the connector (5) and the two clamping arms (2), and two ends of the double-hinge connecting rod (4) are hinged with the connector (5) and the rear ends of the corresponding clamping arms (2) respectively;
a mounting hole communicated with the abdicating hole (11a) is formed in the mounting station, the transmission rod (6) is sleeved in the mounting hole, and the front end of the transmission rod (6) extends into the abdicating hole (11a) and enables the connector (5) to be located in the abdicating hole (11 a); the two clamping units are respectively positioned at two sides of the clamping plate (11), the two clamping arm supports (3) are respectively and fixedly installed on the side walls of two sides of the clamping plate (11), and the power device (10) is fixedly installed on the clamping plate (11).
2. The automatic clamping device as claimed in claim 1, wherein: the power device (10) adopts a cylinder or an electric cylinder.
3. The automatic clamping device as claimed in claim 1, wherein: the two clamping arm brackets (3) belonging to the two clamping units are arranged in a split manner or integrally.
4. The automatic clamping device as claimed in claim 1, wherein: the front end of centre gripping arm (2) be equipped with through-hole (2a) axis vertically perforates, chuck (1) include rubber head (1a) and with rubber head (1a) fixed connection's screw rod (1b), screw rod (1b) pass it is fixed to adopt the nut installation after the perforation.
5. The automatic clamping device as claimed in claim 1, wherein: be equipped with on centre gripping arm support (3) and be located respectively screw counter bore (3b) of recess (3a) both sides, be equipped with axis and its vertically pinhole (3c) in screw counter bore (3b), pinhole (3c) link up the lateral wall of recess (3a), and be located respectively pinhole (3c) coaxial setting on recess (3a) both sides wall, these two be equipped with between pinhole (3c) and pass the bolt of through-hole (2 a).
6. The automatic clamping device as claimed in claim 1, wherein: the mounting hole is including the major diameter section (11b) that is located the rear end and minor diameter section (11c) that is located the front end, be equipped with the suit in minor diameter section (11c) on transfer line (6) and with transition fit's linear bearing (7) between transfer line (6), the rear end of linear bearing (7) extends and stretches into in major diameter section (11b), be equipped with the suit in major diameter section (11b) sleeve (8) outside linear bearing (7), sleeve (8) with be equipped with between linear bearing (7) and be used for preventing linear bearing (7) axial float's limit structure.
7. The automatic clamping device as claimed in claim 6, wherein: the limiting structure comprises a clamp spring (13) installed on the linear bearing (7), and the clamp spring (13) is located between the front end face of the sleeve (8) and the shaft shoulders of the large-diameter section (11b) and the small-diameter section (11 c).
8. The automatic clamping device as claimed in claim 1, wherein: and the power device (10) is provided with a connecting plate (9), and the connecting plate (9) is fixedly arranged on the rear end face of the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353983.2A CN111571497B (en) | 2020-04-29 | 2020-04-29 | Automatic clamping device and automatic clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353983.2A CN111571497B (en) | 2020-04-29 | 2020-04-29 | Automatic clamping device and automatic clamping mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111571497A CN111571497A (en) | 2020-08-25 |
| CN111571497B true CN111571497B (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010353983.2A Active CN111571497B (en) | 2020-04-29 | 2020-04-29 | Automatic clamping device and automatic clamping mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN111571497B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3371953A (en) * | 1967-03-16 | 1968-03-05 | Leland F. Blatt | Gripper |
| CN201023219Y (en) * | 2006-12-31 | 2008-02-20 | 比亚迪股份有限公司 | Positioning device |
| CN205766200U (en) * | 2016-06-22 | 2016-12-07 | 苏州赛腾精密电子股份有限公司 | A kind of link-type clamping mechanism |
| CN107225522A (en) * | 2017-07-03 | 2017-10-03 | 张明强 | A kind of elastic clamp device for fragile article |
| CN207982859U (en) * | 2017-12-30 | 2018-10-19 | 深圳市威廉姆自动化设备有限公司 | A kind of link-type clamping mechanism |
-
2020
- 2020-04-29 CN CN202010353983.2A patent/CN111571497B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3371953A (en) * | 1967-03-16 | 1968-03-05 | Leland F. Blatt | Gripper |
| CN201023219Y (en) * | 2006-12-31 | 2008-02-20 | 比亚迪股份有限公司 | Positioning device |
| CN205766200U (en) * | 2016-06-22 | 2016-12-07 | 苏州赛腾精密电子股份有限公司 | A kind of link-type clamping mechanism |
| CN107225522A (en) * | 2017-07-03 | 2017-10-03 | 张明强 | A kind of elastic clamp device for fragile article |
| CN207982859U (en) * | 2017-12-30 | 2018-10-19 | 深圳市威廉姆自动化设备有限公司 | A kind of link-type clamping mechanism |
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| Publication number | Publication date |
|---|---|
| CN111571497A (en) | 2020-08-25 |
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Address after: 310027 No. 38, Zhejiang Road, Hangzhou, Zhejiang, Xihu District Patentee after: ZHEJIANG University Patentee after: Xi'an Zhenhang Intelligent Equipment Technology Co.,Ltd. Address before: 310027 No. 38, Zhejiang Road, Hangzhou, Zhejiang, Xihu District Patentee before: ZHEJIANG University Patentee before: Xi'an Aimei Aviation Technology Co.,Ltd. |
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