CN115464447A - Double-spindle drilling and tapping center capable of changing tools without rotating continuously - Google Patents
Double-spindle drilling and tapping center capable of changing tools without rotating continuously Download PDFInfo
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- CN115464447A CN115464447A CN202211199544.6A CN202211199544A CN115464447A CN 115464447 A CN115464447 A CN 115464447A CN 202211199544 A CN202211199544 A CN 202211199544A CN 115464447 A CN115464447 A CN 115464447A
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- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 230000000712 assembly Effects 0.000 claims abstract description 17
- 238000000429 assembly Methods 0.000 claims abstract description 17
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- 239000004020 conductor Substances 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
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Abstract
The invention discloses a double-spindle drilling and tapping center capable of changing tools without stopping rotation, and belongs to the field of machining equipment. A double-spindle drilling and tapping center with tool changing without rotation stop comprises: the bridge plate module comprises a bridge plate for bearing the clamp and the workpiece, an X-axis drive for driving the bridge plate to move on an X axis, and a Y-axis drive for driving the bridge plate to move on a Y axis; the stand column module comprises a main shaft for clamping the tool shank and a Z-axis drive for driving the main shaft to move on a Z axis; the tool magazine module comprises an annular guide rail, a plurality of clamping assemblies moving around the annular guide rail, tools clamped by the corresponding clamping assemblies, and a clamping drive driving the clamping assemblies to move; the tool magazine module is rotationally connected with the upright post module; the synchronous rotation of the cutter and the main shaft can be realized, the main shaft is connected with the cutter in a matching manner in the rotation process, the service life of a main shaft motor is prolonged, and the cutter changing speed is improved.
Description
Technical Field
The invention belongs to the field of machining equipment, and particularly relates to a double-spindle drilling and tapping center capable of changing tools without rotation.
Background
In the process of machining and tapping a component, different machining tools are generally used, and when the different machining tools are switched, the component is not machined and the tool needs to wait for the completion of the tool switching. The shortening of the tool changing time is beneficial to the cost reduction of the process; in addition, the service life of the motor is shortened when the spindle motor is started and stopped, and the process cost is reduced if the number of times of starting and stopping the motor is reduced.
How to shorten the tool changing time, the existing tool changing method which generally adopts a non-stop rotation mode, for example, a machining center spindle with the patent number of CN201610288166.7 does not stop rotating and is provided with an automatic tool changing device of a mechanical arm, which comprises a spindle, a tool handle, a tool magazine, a tool changing mechanical arm and a numerical control system; the main shaft has a speed regulation function and a real-time circumferential position detection and adjustment function; the cutter handle comprises an outer taper handle coaxially connected with the main shaft, a cutter body, a bearing sleeved on the cutter body, a groove, an engaging device A and a cutter; the tool magazine comprises a plurality of tool positions and tool position transposition devices, each tool position comprises a taper sleeve for clamping a tool, a tool driving motor for driving the tool to rotate, a real-time detection and adjustment system for the circumferential position of the tool and a B meshing device meshed with the tool, the tool on a main shaft of the machining center can be quickly changed under the condition that the main shaft does not stop rotating and the tool in the tool magazine can be quickly changed, and the auxiliary machining time in machining of the machining center is saved.
However, the arrangement mode needs to modify the tool holder, so that the universal tool holder cannot be applied, the manufacturing cost is high, the application range is narrow, and the mass popularization and utilization are not facilitated; secondly it is the grip surface undersize when the centre gripping handle of a knife, the handle of a knife easily rocks when rotating, has the risk that breaks away from the centre gripping easily and causes the cutter to damage.
For a double-spindle machine tool, the requirement on the synchronization of tool changing of two spindles is higher, for example, a double-spindle drilling and tapping center with patent number CN202111583845.4 comprises a machine body and a box body arranged on the machine body, a cross beam is arranged at the top of the box body, a vertically movable spindle box is arranged at the front part of the box body, two bilaterally symmetrical spindles are arranged in the spindle box, tools are arranged on the spindles, fixed side plates are fixedly arranged at two side edges of the spindle box, a unclamping cylinder and a mounting plate for installing the unclamping cylinder are arranged above each spindle between the two fixed side plates, a supporting plate capable of moving left and right and front is arranged on the machine body, an automatic tool changing device with an automatic tool changing function is arranged at a position close to the spindle box, and a suspension arm movably connected with the automatic tool changing device is arranged at the front part of the cross beam; the cutter changing device can be used for placing a cutter to be changed at the lower side of the main shaft while the cutter changing device rotates integrally, and the cutter changing can be realized as long as the main shaft moves up and down; however, the tool shank of the tool can be installed in the spindle only on the premise that the spindle is prevented from rotating, because the tool shank of the tool cannot rotate on the annular track.
Disclosure of Invention
The invention aims to provide a double-spindle drilling and tapping center capable of changing tools without stopping rotation, which can realize synchronous rotation of a tool and a spindle, the spindle is matched and connected with the tool in the rotation process, the service life of a spindle motor is prolonged, and the tool changing speed is improved.
The invention relates to a double-spindle drilling and tapping center capable of changing tools without stopping rotation, which comprises:
the bridge plate module comprises a bridge plate for bearing the clamp and the workpiece, an X-axis drive for driving the bridge plate to move on an X axis, and a Y-axis drive for driving the bridge plate to move on a Y axis;
the stand column module comprises a main shaft for clamping the tool shank and a Z-axis drive for driving the main shaft to move on a Z axis;
the tool magazine module comprises an annular guide rail, a plurality of clamping assemblies moving around the annular guide rail, tools clamped by the corresponding clamping assemblies, and a clamping drive driving the clamping assemblies to move; the tool magazine module is rotationally connected with the upright post module; the inner sides of a pair of clamping jaws of the clamping assembly are respectively provided with a plurality of balls which roll freely, so that the cutter has a self-rotating space when being clamped; the clamping assemblies are provided with connecting units positioned on the outer sides of the cutters, the connecting units are embedded and clamped with key grooves of the cutters, and the connecting units are detachably connected with the main shaft so that the main shaft drives the cutters to rotate;
the tool changing driving device comprises a tool changing driving device, a tool changer driving device and a tool magazine module, wherein the tool changing driving device is located on the upper side of the upright post module, the output end of the tool changing driving device is connected with the tool magazine module in a rotating mode, the output end of the tool changing driving device has telescopic capacity so that the tool magazine module can rotate to the position, where at least one pair of tools are located on the lower side of the corresponding main shaft, and when the position is reached, the main shaft and the corresponding tools are coaxial.
As a further improvement of the invention, the clamping assembly comprises a frame arm directly or indirectly connected with the annular guide rail, a frame seat connected with the end of the frame arm far away from the annular guide rail, a mounting wall positioned in the middle of the frame seat, clamping jaws respectively arranged on two sides of the frame seat, and a connecting unit detachably connected to the upper side of the mounting wall; the end part of the clamping jaw, far away from the frame arm, is a clamping end, the clamping end at least comprises an arc section, and the balls are all positioned on the inner wall of the clamping end; the end part of the clamping jaw close to the frame arm is a rotating end, and the two rotating ends are connected through a spring; when clamping, the balls are abutted against the outer side of the cutter, the spring is in a compressed state, and the clamping ends have the tendency of approaching to the direction of the cutter; the connecting unit is clamped with the key groove of the knife handle.
As a further improvement of the invention, the clamping end comprises an oblique angle section and an arc section; the oblique angle section is connected with the end, far away from the frame arm, of the circular arc section; the oblique angle section is tangent to the circular arc section, and the oblique angle sections of the two clamping ends are arranged close to each other; when clamping is carried out, the two oblique angle sections approach each other, the distance is kept, and the size of the distance is smaller than the length size of the connecting unit; the arc length of the arc section is at least larger than the arc length of the outer side surface of the half of the knife handle.
As a further improvement of the invention, the end of the oblique angle section, which is far away from the arc section, is provided with an expanding section; the two flaring segments are disposed away from each other.
As a further improvement of the invention, the connecting unit comprises a driving plate, a telescopic part, a bottom plate and a clamping key; the drive plate is at least made of magnetic conductive material, the lower end surface of the main shaft positioned outside the mounting ring is provided with a magnetic piece, and the magnetic piece keeps attractive force to the drive plate; the telescopic direction of the telescopic part is only the vertical direction; the bottom plate is detachably connected with the mounting wall; the clamping key is always embedded in the key groove of the cutter handle; during the connection, the magnetic part is abutted to the drive plate, the telescopic part is in the maximum extension state, the bottom plate is disconnected from the installation wall, and the clamping key is embedded in the key groove of the cutter handle, so that the main shaft drives the cutter to rotate.
As a further improvement of the invention, the telescopic part comprises a telescopic bag, the bag wall of the telescopic bag is made of flexible or elastic material, a support frame is arranged outside the telescopic bag, the support frame is made of rigid material and has a structure capable of stretching in the vertical direction; the inner cavity of the telescopic bag is a closed air cavity, and the inner cavity is provided with an air inlet and an air outlet which are both one-way channels.
As a further improvement of the invention, the telescopic part comprises a telescopic bag, the bag wall of the telescopic bag is made of a flexible metal core strip, and the inner cavity of the telescopic bag is an open air cavity.
As a further improvement of the invention, the bottom plate is made of at least a magnetic conductive material; the mounting wall is made of at least a magnetic material; the mounting wall maintains an attractive force to the base plate; the attraction force of the mounting wall to the base plate is smaller than the attraction force of the magnetic member to the drive plate.
As a further improvement of the invention, the bottom plate is made of at least a magnetic conductive material; the mounting wall is made of at least a magnetic conductive material; the outer side of the annular guide rail is at least provided with a pair of strong magnetic components, and the magnetism of the strong magnetic components is stronger than that of the magnetic components; after the cutter is installed in the main shaft, the annular guide rail is turned over away from the main shaft, and the installation wall of the corresponding clamping component of the cutter installed in the main shaft is detachably abutted against the strong magnetic component and magnetized; when a cutter on the main shaft needs to be replaced, the attraction force of the mounting wall to the bottom plate is greater than the attraction force of the magnetic piece to the driving plate, and the connection unit is disconnected from the main shaft and is restored to be connected with the mounting wall.
Compared with the prior art, the invention has the beneficial effects that:
the pair of clamping jaws with the arc shapes are arranged to clamp the cutter, and the inner sides of the clamping jaws are also provided with the balls capable of rolling freely, so that the cutter in a self-rotating state can be clamped, the original static cutter can have the capability of driven self-rotation, the cutter can rotate along with the spindle, the spindle motor does not need to be stopped, and the speed of replacing the cutter is increased;
according to the invention, the connecting unit is arranged, so that a static cutter can be indirectly driven by the main shaft, the key groove of the cutter handle corresponds to the key of the main shaft, the cutter can be mounted as long as the main shaft moves downwards, and the cutter mounting process is quick and simple.
Drawings
Fig. 1 is a schematic perspective view of a drilling and tapping center according to a first embodiment of the present invention;
fig. 2 is a schematic perspective view of a tool magazine module and a spindle according to a first embodiment of the present invention;
fig. 3 is a schematic perspective view of a tool magazine module according to a first embodiment of the present invention;
FIG. 4 is a perspective view of a clamping assembly and a tool according to a first embodiment of the present invention;
FIG. 5 is a perspective view of a clamping assembly according to a first embodiment of the present invention;
FIG. 6 is a schematic plan view of a tool according to a first embodiment of the present invention;
FIG. 7 is a schematic plan view of a tool according to a first embodiment of the present invention being clamped and spinning;
FIG. 8 is a schematic plan view of the connection unit according to the first embodiment of the present invention in an extended state;
FIG. 9 is a schematic diagram of a flat structure of a connection unit in a compression mode according to a first embodiment of the present invention;
FIG. 10 is a schematic view of a first embodiment of the present invention showing a tool moving to the lower side of a spindle;
FIG. 11 is a schematic view of a first embodiment of the present invention showing a tool near a spindle;
FIG. 12 is a schematic view of a tool and a spindle rotating together according to a first embodiment of the present invention;
FIG. 13 is a schematic view of a tool according to a first embodiment of the present invention mounted in a spindle;
FIG. 14 is a schematic view of a clamping assembly according to a first embodiment of the present invention shown separated from a tool;
FIG. 15 is a schematic view of a clamping assembly according to a first embodiment of the present invention re-clamping a tool to be replaced;
fig. 16 is a schematic structural view of a tool to be replaced separated from a spindle according to a first embodiment of the present invention.
The reference numbers in the figures illustrate:
bridge plate module 1, column module 2, tool changing drive 3, tool magazine module 4, annular guide rail 41, clamping assembly 42, frame arm 421, frame seat 422, mounting wall 423, clamping jaw 424, connecting unit 425, drive plate 4251, expansion bag 4252, bottom plate 4253, clamping key 4254, air inlet 4255, air outlet 4256, tool 43, main shaft 5 and magnetic piece 51.
Detailed Description
The first embodiment is as follows: referring to fig. 1-16, a double-spindle drilling and tapping center with tool changing without rotation stop includes: the tool changing device comprises a bridge plate module 1, a stand column module 2, a tool changing drive 3, a tool magazine module 4 and a main shaft 5.
The bridge plate module 1 comprises a bridge plate for bearing a clamp and a workpiece, an X-axis drive for driving the bridge plate to move on an X axis, and a Y-axis drive for driving the bridge plate to move on a Y axis.
The column module 2 comprises a main shaft 5 for clamping the tool shank and a Z-axis drive for driving the main shaft 5 to move on the Z axis.
The tool magazine module 4 comprises an annular guide rail 41, a plurality of clamping assemblies 42 moving around the annular guide rail 41, tools 43 clamped by the corresponding clamping assemblies 42, and a clamping drive for driving the clamping assemblies 42 to move; the tool magazine module 4 is rotationally connected with the upright post module 2; a plurality of balls which roll freely are arranged on the inner sides of the pair of clamping jaws 424 of the clamping assembly 42, so that the cutter 43 has a space for rotating when being clamped; the clamping assemblies 42 are respectively provided with a connecting unit 425 positioned on the outer side of the cutter 43, the connecting units 425 are in embedded clamping connection with the key grooves of the cutter 43, and the connecting units 425 are detachably connected with the spindle 5 so that the spindle 5 drives the cutter 43 to rotate.
The tool changing drive 3 is positioned on the upper side of the column module 2, the output end of the tool changing drive 3 is rotatably connected with the tool magazine module 4, the output end of the tool changing drive 3 has telescopic capacity so that the tool magazine module 4 can rotate to a position where at least one pair of tools 43 are positioned on the lower side of the corresponding spindle 5, and the spindle 5 and the corresponding tools 43 are coaxial when in the position.
The invention is based on:
a double-spindle drilling and tapping center with the patent number of CN202111583845.4,
A tool setting device applied to a double-spindle drilling and tapping center, with the patent number of CN202123318569.7,
An improved invention is provided by a tool clamping device with patent number CN202123274712.7 applied to a dual spindle drilling and tapping center, therefore, in this embodiment, specific structures, matching relationships, tool changing processes, and the like of the bridge plate module 1, the column module 2, the tool changing drive 3, the annular guide rail 41, and the spindle 5 are described with reference to the three prior patents, and are not repeated herein; the present application and the above three prior patents are directed to the clamping assembly 42 of the tool magazine module 4, and therefore, the following description of the present embodiment will focus on the clamping assembly 42 and the associated mating components.
The clamp assembly 42 includes a frame arm 421 indirectly coupled to the annular rail 41, a frame base 422 coupled to an end of the frame arm 421 remote from the annular rail 41, a mounting wall 423 located at a middle portion of the frame base 422, clamping jaws 424 respectively disposed at both sides of the frame base 422, and a coupling unit 425 detachably coupled to an upper side of the mounting wall 423.
The specific connection manner of the frame arm 421 and the annular guide rail 41 is the prior art, and is not described herein, and the frame arm 421 can move around the annular guide rail 41;
the frame seat 422 is made of rigid material, the middle part of the frame seat 422 is hollow, the mounting wall 423 is detachably embedded in the middle part of the frame seat 422, and the upper end surface of the mounting wall 423 is flush with the upper end surface of the frame seat 422;
the end part of the clamping jaw 424 close to the frame arm 421 is a rotating end, the two rotating ends are connected through a spring, when clamping is carried out, the spring is in a compressed state, and the clamping ends have a tendency of closing towards the direction of the cutter 43; the specific connection manner of the clamping jaw 424 and the frame seat 422 is the prior art, and is not described herein, the end of the clamping jaw 424 away from the frame arm 421 is a clamping end, and the structure of the clamping end is different from that of the prior art;
in this embodiment, the clamping end includes an arc section, a bevel section, and a flared section;
the inner diameter of the arc section is slightly larger than the outer diameter of the cutter handle, a plurality of balls capable of rolling freely are embedded in the inner wall of the arc section, at least part of the balls are exposed on the inner side of the arc section to be abutted against the periphery of the cutter handle, the arc length of the arc section is at least larger than the outer side surface arc length of one half of the cutter handle, so that the cutter handle can be abutted by the balls as much as possible, the limiting capacity of the cutter handle is improved, and the cutter 43 is not prone to shaking when rotating;
the oblique angle section is connected with the end of the circular arc section far away from the frame arm 421; the oblique angle section is tangent to the arc section, the oblique angle sections of the two clamping ends are arranged close to each other, when in clamping, the two oblique angle sections keep a distance between the close ends, and the distance is smaller than the length of the connecting unit 425, so that the clamping jaw 424 is favorable for being separated from the knife handle when the annular guide rail 41 returns;
the flaring section sets up and keeps away from the circular arc section end at the oblique angle section, and two flaring sections set up far away from each other, and such setting is favorable to annular guide 41 to handle side when rotating, and clamping jaw 424 receives the handle of a knife butt and opens, and the handle of a knife easily slides in clamping jaw 424.
The connecting unit 425 comprises a driving plate 4251, a telescopic part, a bottom plate 4253 and a clamping key 4254;
the drive plate 4251 is made of a magnetic conductive material, in the embodiment, the drive plate 4251 is made of iron alloy and has the characteristic of being attracted by a magnetic part, a magnetic part 51 is arranged on the lower end surface of the spindle 5, which is positioned outside a mounting ring, the magnetic part 51 keeps attraction force on the drive plate 4251, the mounting ring is an annular part which is arranged at the lower end of the spindle 5 and is used for being clamped with the tool shank, the mounting ring is lower than the lower end surface of the spindle 5, therefore, the magnetic part 51 is arranged at the position and does not interfere clamping connection of the tool shank and the spindle 5, and the lower end surface of the magnetic part 51 is higher than or equal to the lower end surface of the mounting ring;
the clamp key 4254 is made of a hard component, the clamp key 4254 is embedded in a key groove of the handle, the clamp key 4254 is arranged on the outer side of the telescopic part, the driving plate 4251 is arranged at the top end of the telescopic part, and the bottom plate 4253 is arranged at the bottom end of the telescopic part;
the telescopic direction of the telescopic part is only the vertical direction, and the telescopic distance of the telescopic part is limited; in this embodiment, the telescopic portion includes a telescopic bag 4252, a bag wall of the telescopic bag 4252 is made of a flexible or elastic material, a support frame is arranged outside the telescopic bag 4252, the support frame is made of a rigid material and has a structure that is telescopic in a vertical direction, the structure is similar to a telescopic rod of a folding umbrella, which is a conventional means of a person skilled in the art, and therefore, the detailed description is omitted, and the function of the support frame is to ensure that the telescopic bag 4252 is telescopic only in the vertical direction; the inner cavity of the bellows 4252 is a closed air cavity, the inner cavity is provided with an air inlet 4255 and an air outlet 4256, the air inlet 4255 and the air outlet 4256 are both one-way passages, the air inlet 4255 and the air outlet 4256 are both normally closed, the opening of the air inlet 4255 and the air outlet 4256 are both provided with pressure thresholds, and the one-way passages are similar to a duckbill valve in form, which is the conventional means of the technicians in the field, and therefore, the detailed description is omitted; the driving force that the bellows 4252 can expand and contract is provided by the attraction force of the magnetic member 51 to the driving plate 4251, when the tool is ready to be changed, the clamping assembly 42 is located at the lower side of the spindle 5, the clamping assembly 42 is not fixed, the spindle 5 rotates, the magnetic member 51 is not always directly above the bellows 4252, when the magnetic member 51 rotates to be directly above the bellows 4252, the magnetic member 51 attracts the driving plate 4251 to ascend, the ascending of the driving plate 4251 can reduce the air pressure in the inner cavity of the bellows 4252, the air inlet 4255 is pressed and opened by the external atmospheric pressure, the inner cavity of the bellows 4252 is inflated until the driving plate 4251 ascends to be abutted against the magnetic member 51, in the embodiment, the expansion and contraction of the bellows 4252 are limited, when the magnetic member 51 is abutted against the driving plate 4241, the moving distance of the driving plate 4251 exceeds the limit distance which can be extended by the telescopic bag 4252, at the moment, the connecting unit 425 can be separated from the connecting wall 423, the rotation of the main shaft 5 can drive the connecting unit 425 to rotate, the connecting unit 425 is clamped with the cutter 43, the main shaft 5 indirectly drives the cutter 43 to rotate, as the key groove of the cutter handle and the key of the main shaft 5 are in the same vertical direction, the connection between the cutter 43 and the main shaft 5 can be realized only by descending the main shaft 5, when the main shaft 5 descends, the driving plate 4251 is pressed to descend, the air pressure in the inner cavity of the telescopic bag 4252 is increased, the air outlet 4256 is pressed to be opened, and the telescopic bag 4252 is compressed until the cutter handle is completely immersed in the main shaft 5 and is completely installed;
the bottom plate 4253 is detachably connected to the mounting wall 423, in this embodiment, the bottom plate 4253 is also made of iron alloy, the mounting wall 423 is made of a magnetic member or a magnetized magnetic conductive member, an attractive force exists between the mounting wall 423 and the bottom plate 4253, and it should be noted that, when the cutter 43 is clamped on the clamping assembly 42 to prepare for tool changing, the attractive force between the mounting wall 423 and the bottom plate 4253 is smaller than the attractive force between the driving plate 4251 and the magnetic member 51 when they are abutted against each other;
first, since the depth of the key groove of the holder is generally greater than the height of the key at the lower end of the mounting ring, the click key 4254 has a space for being caught in the key groove, and second, since the lower end surface of the magnetic material 51 is higher than or equal to the lower end surface of the mounting ring, a certain distance is left between the lower end surface of the magnetic material 51 and the upper end surface of the mounting wall 423 after the tool 43 is mounted, and thus the expansion part has a space for installation.
The working principle is as follows: when the spindle 5 needs to be replaced, the annular guide rail 41 is turned in the direction close to the spindle 5, the two clamping assemblies 42 clamp a new tool 43 to be replaced and are positioned at the lower side of the spindle 5, the spindle 5 is coaxial with the tool 43 at the moment, the spindle 5 still keeps rotating at the moment, no tool is assembled on the spindle 5 at the moment, the tool 43 is clamped by the clamping assemblies 42 and does not rotate, and the connecting unit 425 is connected to the mounting wall 423 at the moment; the spindle 5 descends a distance in advance to enable the magnetic piece 51 of the spindle 5 to attract the drive plate 4251 to move upwards, at the moment, the distance between the lower end face of the magnetic piece 51 and the upper end face of the mounting wall 423 is larger than the maximum extension size of the connecting unit 425, when the drive plate 4251 is attracted by the magnetic piece 51 to gradually move upwards until the drive plate 4251 abuts against the magnetic piece 51, the connecting unit 425 is disconnected from the mounting wall 423, the clamp key 4254 of the connecting unit 425 is matched and embedded with the key groove of the tool holder all the time, the spindle 5 drives the connecting unit 425 and indirectly drives the tool 43 to rotate, and the tool 43 abuts against the ball, so that the tool 43 can rotate when clamped by the clamping assembly 42; next, the main shaft 5 continues to descend, the connecting unit 425 is compressed, and the cutter 43 and the main shaft 5 are completely installed in a matched mode; next, the clamping assembly 42 needs to be withdrawn, and the clamping assembly 42 can be easily withdrawn due to the structure of the balls and the clamping ends of the clamping jaws 424, so that the spindle 5 is completely installed.
The second concrete embodiment: on the basis of the first embodiment, the bottom plate 4253 and the mounting wall 423 are both made of magnetic conductive materials; there is a releasable mating connection, such as a snap connection or the like, between the base plate 4253 and the mounting wall 423, which is conventional to those skilled in the art and will not be described in detail herein.
A pair of strong magnetic pieces are arranged outside the annular guide rail 41, and the magnetism of the strong magnetic pieces is stronger than that of the magnetic pieces 51; the ferromagnetic part is stationary with respect to the circular guide 41, that is, the ferromagnetic part does not move when the circular guide 41 is turned over, and the ferromagnetic part is opposite to the clamping assembly 42 of the spindle 5; the strong magnetic member is arranged in a stationary manner relative to the annular guide rail 41, and can be connected to the column module 2 by a fixed base, or can be connected to the connecting rod assembly which freely rotates relative to the annular guide rail 21.
After the tool 43 is mounted in the spindle 5, the annular guide rail 41 is turned away from the spindle 5, and the mounting wall 423 of the corresponding clamp assembly 42 of the tool 43 mounted in the spindle 5 is detachably abutted with the ferromagnetic member and magnetized; it should be noted that the strong magnetic material abuts against the mounting wall 423, and after a certain period of magnetization, the mounting wall 423 is magnetized, and at this time, the attraction force between the mounting wall 423 and the drive plate 4251 is larger than the attraction force between the magnetic material 51 and the drive plate 4251.
When the tool on the spindle 5 needs to be replaced, since the connecting unit 425 on the clamping assembly 42 that originally clamps the tool 43 is temporarily left on the spindle 5 when the tool 43 is assembled on the spindle 5 on the drilling and tapping center, the tool 43 and the connecting unit 425 on the spindle 5 need to be removed together when the tool 43 is used and the next tool 43 needs to be used; the mounting wall 423 which is magnetized by the strong magnetic member attracts the connecting unit 425 to be attached to the mounting wall 425, and the connection is restored again; when the ring rail 41 is turned over to replace the next tool 43 below the spindle 5, the connection between the drive plate 4251 and the magnetic member 51 is disconnected, or when the spindle 5 moves upward, the connection between the drive plate 4251 and the magnetic member 51 is disconnected, or when the spindle 5 rotates, the connection between the drive plate 4251 and the magnetic member 51 is disconnected.
The third concrete embodiment: different from the second specific embodiment, an electromagnet assembly which works independently is arranged at the lower end of the frame seat 422, the electromagnet assembly is abutted against the mounting wall 423, the energization size of the electromagnet assembly is controlled by a controller, and the controller is positioned at the lower end of the frame seat 422; when the connection between the driving plate 4251 and the magnetic member 51 needs to be disconnected, the energizing current of the electromagnet assembly is increased, so that the magnetization intensity of the mounting wall 423 is higher and faster, and the purpose of the invention realized by the second embodiment can also be realized.
The lower end of the mount 422 is an end surface of the mount 422 which is far from the spindle 5.
The fourth concrete embodiment: unlike any of the first to third embodiments, the clamping end of the clamping jaw 424 includes only a circular arc segment and a bevel segment.
The fifth concrete embodiment: unlike any of the first to third embodiments, the gripping end of the jaw 424 includes only a circular arc segment.
The sixth specific embodiment: unlike the first embodiment, the wall of the bellows 4252 is made of a flexible metal core strip, and the inner cavity of the bellows 4252 is an open air cavity, and the flexible metal core strip can only stretch in the vertical direction.
The seventh specific embodiment: in contrast to the second or third embodiment, the circular guide 41 is turned over by a greater angle after the tool 43 is mounted on the spindle 5; and a magnetizing part is arranged outside the annular guide rail 41; the magnetic part is corresponding to the clamping component 42 which is opposite to the main shaft 5; the annular guide rail 41 turns a larger angle after the cutter 43 is mounted on the spindle 5, so that the mounting wall 423 of the clamping assembly 42 which does not clamp the cutter 43 abuts against the magnetized part, the magnetized part and the mounting wall 423 form a large magnet, and the attraction force of the magnet on the drive plate 4251 is greater than that of the magnet 51 on the drive plate 4251; after the annular guide rail 41 attaches one pair of magnetizing parts to the clamping assembly each time, the next pair of magnetizing parts can be transmitted to the positions of the original magnetizing parts through the conveying device; the delivery device is conventional to those skilled in the art and will not be described in detail herein.
Claims (9)
1. The utility model provides a center is attacked to two main shafts of incessantly commentaries on classics formula tool changing brill which characterized in that: the method comprises the following steps:
the bridge plate module (1) comprises a bridge plate for bearing the clamp and the workpiece, an X-axis drive for driving the bridge plate to move on an X axis, and a Y-axis drive for driving the bridge plate to move on a Y axis;
the upright post module (2) comprises a main shaft (5) for clamping the tool shank and a Z-axis drive for driving the main shaft (5) to move on a Z axis;
the tool magazine module (4) comprises an annular guide rail (41), a plurality of clamping assemblies (42) moving around the annular guide rail (41), tools (43) clamped by the corresponding clamping assemblies (42), and a clamping drive driving the clamping assemblies (42) to move; the tool magazine module (4) is rotationally connected with the upright post module (2); a plurality of balls which can roll freely are arranged on the inner sides of the pair of clamping jaws (424) of the clamping assembly (42) so that the cutter (43) has a space for rotating when being clamped; the clamping assemblies (42) are respectively provided with a connecting unit (425) positioned on the outer side of the cutter (43), the connecting units (425) are embedded and clamped with a key groove of the cutter (43), and the connecting units (425) are detachably connected with the main shaft (5) so that the main shaft (5) drives the cutter (43) to rotate;
the tool changing driving device comprises a tool changing driving device (3) located on the upper side of a column module (2), the output end of the tool changing driving device (3) is connected with a tool magazine module (4) in a rotating mode, the output end of the tool changing driving device (3) has telescopic capacity so that the tool magazine module (4) can rotate to the position where at least one pair of tools (43) are located on the lower side of a corresponding main shaft (5), and the main shaft (5) and the corresponding tools (43) are coaxial when the position is located.
2. The double-spindle drilling and tapping center capable of changing tools without rotation stop as claimed in claim 1, wherein: the clamping assembly (42) comprises a frame arm (421) directly or indirectly connected with the annular guide rail (41), a frame seat (422) connected with the end, far away from the annular guide rail (41), of the frame arm (421), a mounting wall (423) located in the middle of the frame seat (422), clamping jaws (424) respectively arranged on two sides of the frame seat (422), and a connecting unit (425) detachably connected to the upper side of the mounting wall (423); the end part of the clamping jaw (424) far away from the frame arm (421) is a clamping end, the clamping end at least comprises an arc section, and the balls are all positioned on the inner wall of the clamping end; the end part of the clamping jaw (424) close to the frame arm (421) is a rotating end, and the two rotating ends are connected through a spring; when clamping, the balls are abutted against the outer side of the cutter (43), the spring is in a compressed state, and the clamping ends have the tendency of approaching to the direction of the cutter (43); the connecting unit (425) is clamped with the key groove of the cutter handle.
3. The double-spindle drilling and tapping center capable of changing tools without rotation stop as claimed in claim 2, wherein: the clamping end comprises an oblique angle section and an arc section; the oblique angle section is connected with the end of the circular arc section, far away from the arm (421); the oblique angle section is tangent to the circular arc section, and the oblique angle sections of the two clamping ends are arranged close to each other; when clamping is carried out, the two bevel angle sections are close to each other, the distance is kept, and the distance is smaller than the length of the connecting unit (425); the arc length of the arc section is at least larger than the arc length of the outer side surface of the half of the knife handle.
4. The double-spindle drilling and tapping center capable of changing tools without rotation stop as claimed in claim 3, wherein: the end of the oblique angle section, which is far away from the arc section, is provided with an expanding section; the two flaring segments are disposed away from each other.
5. The double-spindle drilling and tapping center capable of changing tools without rotation stop as claimed in claim 2, wherein: the connecting unit (425) comprises a driving plate (4251), an expansion part, a bottom plate (4253) and a clamping key (4254); the drive plate (4251) is at least made of a magnetic conductive material, a magnetic piece (51) is arranged on the lower end face of the main shaft (5) positioned outside the mounting ring, and the magnetic piece (51) keeps attractive force on the drive plate (4251); the telescopic direction of the telescopic part is only the vertical direction; the bottom plate (4253) is detachably connected with the mounting wall (423); the clamp key (4254) is embedded in the key groove of the knife handle all the time; when the tool is connected, the magnetic piece (51) is abutted against the driving plate (4251), the telescopic part is in the maximum extension state, the bottom plate (4253) is disconnected from the mounting wall (423), and the clamping key (4254) is embedded in the key groove of the tool holder, so that the main shaft (5) drives the tool (43) to rotate.
6. The double-spindle drilling and tapping center capable of changing tools without rotation stop as claimed in claim 5, wherein: the telescopic part comprises a telescopic bag (4252), the bag wall of the telescopic bag (4252) is made of flexible or elastic materials, a support frame is arranged on the outer side of the telescopic bag (4252), the support frame is made of rigid materials and has a structure capable of being stretched in the vertical direction; the inner cavity of the telescopic bag (4252) is a closed air cavity, the inner cavity is provided with an air inlet (4255) and an air outlet (4256), and the air inlet (4255) and the air outlet (4256) are all one-way channels.
7. The double-spindle drilling and tapping center with tool changing without rotation stop as claimed in claim 5, wherein: the telescopic part comprises a telescopic bag (4252), the bag wall of the telescopic bag (4252) is made of a flexible metal core strip, and the inner cavity of the telescopic bag (4252) is an open air cavity.
8. The double-spindle drilling and tapping center with tool changing without rotation stop as claimed in claim 5, wherein: the bottom plate (4253) is at least made of magnetic conductive material; the mounting wall (423) is made at least of a magnetic material; the mounting wall (423) maintains an attractive force to the base plate (4253); the attraction force of the mounting wall (423) to the base plate (4253) is smaller than the attraction force of the magnetic member (51) to the drive plate (4251).
9. The double-spindle drilling and tapping center capable of changing tools without rotation stop as claimed in claim 5, wherein: the bottom plate (4253) is at least made of magnetic conductive material; the mounting wall (423) is made of at least a magnetically conductive material; at least one pair of strong magnetic components are arranged on the outer side of the annular guide rail (41), and the magnetism of the strong magnetic components is stronger than that of the magnetic components (51); after the cutter (43) is installed in the main shaft (5), the annular guide rail (41) is turned away from the main shaft (5), and the installation wall (423) of the corresponding clamping assembly (42) of the cutter (43) installed in the main shaft (5) is detachably abutted against the strong magnetic component and magnetized; when the tool on the main shaft (5) needs to be replaced, the attraction force of the mounting wall (423) to the bottom plate (4253) is greater than the attraction force of the magnetic piece (51) to the drive plate (4251), and the connection unit (425) is disconnected from the main shaft (5) and is restored to the connection with the mounting wall (423).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199544.6A CN115464447B (en) | 2022-09-29 | 2022-09-29 | Double-spindle drilling and tapping center without stopping rotary tool changing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199544.6A CN115464447B (en) | 2022-09-29 | 2022-09-29 | Double-spindle drilling and tapping center without stopping rotary tool changing |
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| CN115464447A true CN115464447A (en) | 2022-12-13 |
| CN115464447B CN115464447B (en) | 2024-04-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117102933A (en) * | 2023-10-16 | 2023-11-24 | 综欣工业装备(潍坊)有限公司 | Disc type automatic tool magazine |
| CN117415656A (en) * | 2023-12-06 | 2024-01-19 | 江苏华力精密机械有限公司 | Tool bit switching device of CNC machining center |
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| EP0255567A1 (en) * | 1986-07-29 | 1988-02-10 | MAHO Aktiengesellschaft | Changing tool for a universal drilling and milling machine |
| JP2006305663A (en) * | 2005-04-27 | 2006-11-09 | Brother Ind Ltd | Automatic tool changer |
| TW200902225A (en) * | 2007-07-10 | 2009-01-16 | Pascal Eng Corp | Tool exchanging device |
| CN209050467U (en) * | 2018-11-06 | 2019-07-02 | 浙江理工大学瓯海研究院有限公司 | A kind of cutter-exchange mechanism |
| CN114211284A (en) * | 2021-12-22 | 2022-03-22 | 浙江劲帆机床科技有限公司 | Double-spindle drilling and tapping center |
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| EP0255567A1 (en) * | 1986-07-29 | 1988-02-10 | MAHO Aktiengesellschaft | Changing tool for a universal drilling and milling machine |
| JP2006305663A (en) * | 2005-04-27 | 2006-11-09 | Brother Ind Ltd | Automatic tool changer |
| TW200902225A (en) * | 2007-07-10 | 2009-01-16 | Pascal Eng Corp | Tool exchanging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117102933A (en) * | 2023-10-16 | 2023-11-24 | 综欣工业装备(潍坊)有限公司 | Disc type automatic tool magazine |
| CN117102933B (en) * | 2023-10-16 | 2023-12-29 | 综欣工业装备(潍坊)有限公司 | Disc type automatic tool magazine |
| CN117415656A (en) * | 2023-12-06 | 2024-01-19 | 江苏华力精密机械有限公司 | Tool bit switching device of CNC machining center |
| CN117415656B (en) * | 2023-12-06 | 2024-02-13 | 江苏华力精密机械有限公司 | Tool bit switching device of CNC machining center |
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|---|---|
| CN115464447B (en) | 2024-04-02 |
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