CN211249261U

CN211249261U - Clamp for precision machining of machining center

Info

Publication number: CN211249261U
Application number: CN201922286544.XU
Authority: CN
Inventors: 成立东; 詹秀英
Original assignee: Wuxi Aierxin Precision Machinery Manufacturing Co ltd
Current assignee: Wuxi Aierxin Precision Machinery Manufacturing Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-08-14
Anticipated expiration: 2029-12-18

Abstract

The utility model relates to a clamp for precision machining of a machining center, which comprises a support frame detachably connected with a machine tool and a bearing plate for mounting a workpiece; the bearing plate is rotatably connected with the support frame, and the support frame is provided with a driving assembly for driving the bearing plate to rotate; the bearing plate is provided with an X-direction positioning component for limiting the position of a workpiece in the length direction of the bearing plate, a Y-direction positioning component for limiting the position of the workpiece in the width direction of the bearing plate and a pressing component for pressing the workpiece on the bearing plate; the bearing plate is provided with a yielding through hole for the machining tool to pass through; y is including dismantling the mount pad of being connected and the locating piece of setting on the mount pad with the loading board to locating component, and the locating piece is equipped with the Y that is used for with the laminating of workpiece surface to the locating surface towards the width direction protrusion in the mount pad setting of loading board, one side of locating piece towards the intermediate position of loading board width direction. The utility model discloses have the effect that can improve product machining precision.

Description

Clamp for precision machining of machining center

Technical Field

The utility model relates to an auxiliary anchor clamps that use of precision finishing especially relates to an anchor clamps are used in machining center precision finishing.

Background

In the field of machining, a plurality of parts have high requirements on dimensional accuracy, and when a traditional milling machine is used for machining, a blank is often required to be clamped for many times, and a reference coordinate system is replaced for many times, so that the machining accuracy of a product is difficult to ensure.

At present, chinese utility model patent with publication number CN208880210U announces an anchor clamps frock and machining center, and the anchor clamps frock includes tray, location structure and mounting fixture, be provided with the constant head tank on the first side of tray, mounting fixture set up in the constant head tank, location structure set up in the second side of tray, just the tray passes through location structure and the last mounting fixture location cooperation of machining center.

The existing clamp can only process the upper surface and the side surface of a product after clamping the product, and can only process grooving and drilling on the upper surface of the product, and the defect is that when the side surface or the bottom surface of the product needs to be grooved or drilled, the clamp needs to be clamped again, and the position precision of a hole position or a groove position is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can ensure the anchor clamps for machining center precision finishing of product machining precision to the not enough of prior art existence.

The above object of the present invention is achieved by the following technical solutions: a clamp for precision machining of a machining center comprises a support frame detachably connected with a machine tool machining platform and a bearing plate used for mounting a blank;

the bearing plate is rotatably connected with the support frame, and the support frame is provided with a driving assembly for driving the bearing plate to rotate;

the bearing plate is provided with an X-direction positioning assembly for limiting the position of the blank in the length direction of the bearing plate, a Y-direction positioning assembly for limiting the position of the blank in the width direction of the bearing plate and a pressing assembly for pressing the blank on the bearing plate;

the bearing plate is provided with an abdicating through hole for a machining tool to pass through;

y includes with the loading board can dismantle the mount pad of being connected and the locating piece of setting on the mount pad to locating component, the locating piece sets up in the mount pad towards the width direction protrusion of loading board, one side of locating piece towards the intermediate position of loading board width direction is equipped with the Y that is used for with the laminating of blank surface to the locating surface.

By adopting the technical scheme, the support frame is used for mounting the bearing plate on the processing platform of the machine tool, the bearing plate is convenient to rotate, the bearing plate is used for clamping the blank, so that the blank can rotate along with the bearing plate, and the abdication through hole can be penetrated by a processing cutter, so that each surface of the blank can be conveniently processed, and the surface size precision and the position precision of the hole groove of the final product can be better ensured; the driving assembly is used for driving the bearing plate to rotate, so that the bearing plate can rotate more conveniently; the X-direction positioning assembly is used for limiting the position of the blank in the length direction of the bearing plate, and the Y-direction positioning assembly is used for limiting the position of the blank in the width direction of the bearing plate; the mounting seat is used for installing the positioning block, and Y can adopt finish machining to form to the locating surface for Y can be more accurate to the locating surface the position of injecing the blank, and then the improvement that can be better is to the machining precision of blank.

The present invention may be further configured in a preferred embodiment as: the bottom of the mounting seat is provided with a positioning key, and the bearing plate is provided with a positioning key groove matched with the positioning key.

Through adopting above-mentioned technical scheme, navigation key and navigation key groove all can adopt precision finishing to form, and the cooperation precision is higher to better assurance the position precision of mount pad on the loading board, and then make the locating piece can be more accurate fix a position blank spare, thereby further assurance the size precision of final products.

The present invention may be further configured in a preferred embodiment as: at least two groups of Y-direction positioning components are arranged in the length direction of the bearing plate.

Through adopting above-mentioned technical scheme, at least two sets of Y can be followed a plurality of points and fixed a position the blank to locating component to make the blank can be more accurate be fixed a position, further assurance final product's dimensional accuracy.

The present invention may be further configured in a preferred embodiment as: x is to locating component including the location cylinder that reference column and drive reference column slided, the reference column slides and runs through the loading board setting along the loading board direction of height.

By adopting the technical scheme, the positioning column is used for being abutted against the side wall of the blank, so that the precision of the blank is better ensured to be higher, and the positioning cylinder is used for driving the positioning column to slide along the axis direction, so that the positioning column can extend out of the bearing plate more conveniently; the bearing board is retrieved to the reference column after processing for the reference column does not with the product butt, can be convenient take off the product from the bearing board.

The present invention may be further configured in a preferred embodiment as: the pressing assembly comprises a pressing seat, a pressing claw arranged on the pressing seat and a pressing driving rod used for driving the pressing claw to swing, the bottom of the bearing plate is connected with a pressing cylinder, a piston rod of the pressing cylinder is connected with the pressing driving rod, the pressing driving rod is hinged with the pressing claw, a pressing connecting rod is hinged to the pressing seat, and one end, far away from the pressing seat, of the pressing connecting rod is hinged with the pressing claw; the pressing assembly is arranged on the bearing plate in a plurality.

Through adopting above-mentioned technical scheme, compress tightly the cylinder and be used for driving to compress tightly the actuating lever and slide along the axis, compress tightly the seat and be used for the installation to compress tightly the claw, compress tightly the swing range that the connecting rod is used for the restriction to compress tightly the claw for compress tightly the blank that the claw can be stable and compress tightly on the loading board, make the blank pressed from both sides tightly more stable, thereby make the blank can be more stable by processing, guaranteed the surface quality of final product.

The present invention may be further configured in a preferred embodiment as: one side of the pressing claw facing the bearing plate is detachably connected with a pressing cushion block.

Through adopting above-mentioned technical scheme, compress tightly the cushion and can dismantle with compressing tightly the claw and be connected to make can the higher cushion that compresses tightly of machining precision alone, so that guarantee compress tightly the subassembly can be more steady compress tightly the blank on the loading board, make the blank more stable in the course of working, avoided the blank to be taken place to vibrate or the displacement by the course of working, thereby guaranteed the surface accuracy and the size precision of final products.

The present invention may be further configured in a preferred embodiment as: the bearing plate is detachably connected with at least three space-avoiding cushion blocks.

Through adopting above-mentioned technical scheme, the clearance cushion is used for stepping up the blank for form clearance between blank and the loading board, thereby make mill logical groove or through-hole to the blank and add man-hour can not harm the loading board, make iron fillings and cooling water discharge from clearance enough better simultaneously, thereby avoided iron fillings to pile up and twine on the cutter, thereby guarantee the cutter to the stable processing of blank, guaranteed the surface precision of cutter to blank processing, improve the surface quality of product.

The present invention may be further configured in a preferred embodiment as: the utility model discloses a bearing plate, including bearing plate length direction, driving assembly, driving turntable, limiting plate and differential mechanism, it is connected with driving turntable to rotate on the support frame, be equipped with the limiting plate on the driving turntable, driving turntable respectively is equipped with one at bearing plate length direction's both ends, the bearing plate is set up on the limiting plate and with limiting plate bolted connection, driving assembly includes driving motor and differential mechanism, driving motor's output shaft with differential mechanism.

By adopting the technical scheme, the driving turntables on the two sides of the bearing plate enable the bearing plate to be mounted more stably, and the bearing plate is enabled to be more stable when rotating; the bearing plate is more convenient to mount due to the limiting plate, different bearing plates can be conveniently replaced according to different products, and the clamping efficiency of blanks can be better improved; the drive carousel that driving motor and differential mechanism can be better rotates, and then can be more convenient drive loading board rotate to each side to the blank of more convenient is processed, and then the surface accuracy of better assurance final product, and the size precision of hole site and trench.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the bearing plate is rotatably connected with the support frame, the Y-direction positioning assembly and the X-direction positioning assembly on the bearing plate respectively position two mutually vertical side surfaces of the blank, and the pressing assembly can clamp the blank on the bearing plate, so that a machine tool can stably process the blank, and the precision of a final product can be better ensured;

2. the blank cushion can be heightened by the clearance cushion block, so that clearance gaps are reserved between the blank and the bearing plate, when the through hole or the through groove is machined, scraps can be discharged from the clearance gaps, the scraps are better prevented from being accumulated and wound on the cutter, the cutter can be stably machined on the blank, and the machining precision of a final product is guaranteed.

Drawings

FIG. 1 is a schematic structural view of the whole of the present embodiment;

FIG. 2 is a schematic view of the Y-direction positioning assembly and the carrier plate of the present embodiment in an exploded state;

FIG. 3 is a schematic view of the X-direction positioning assembly of the present embodiment;

FIG. 4 is a schematic view of a positioning key on the mounting base of the present embodiment;

FIG. 5 is a schematic structural view of the hold-down assembly of the present embodiment;

FIG. 6 is an enlarged schematic view of portion A of FIG. 5;

fig. 7 is an enlarged schematic view of part B of fig. 2.

In the figure, 1, a support frame; 2. a carrier plate; 3. a drive assembly; 4. an X-direction positioning component; 5. a Y-direction positioning component; 6. a compression assembly; 7. a yielding through hole; 8. a mounting seat; 9. positioning blocks; 10. a Y-direction positioning surface; 11. a positioning key; 12. a positioning key groove; 13. a positioning column; 14. positioning the air cylinder; 15. a pressing seat; 16. a pressing claw; 17. compressing the driving rod; 18. a pressing cylinder; 19. a compression connecting rod; 20. pressing the cushion block; 21. a void-avoiding cushion block; 22. driving the turntable; 23. a limiting plate; 24. a drive motor; 25. a differential mechanism; 26. matching with the boss; 27. and (6) accommodating the tank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a clamp for precision machining of a machining center, which comprises a support frame 1 and a bearing plate 2, wherein the support frame 1 is connected with a machining platform of a machine tool through a bolt, and the bearing plate 2 is used for clamping a workpiece; support frame 1 is last to rotate and is connected with two drive turntable 22, two coaxial settings of drive turntable 22, two drive turntable 22 set up the both ends at 2 length direction of loading board respectively, be provided with on the support frame 1 and be used for driving drive turntable 22 pivoted drive assembly 3, drive assembly 3 includes driving motor 24 and differential mechanism 25, driving motor 24's output shaft passes through the coupling joint with differential mechanism 25's input shaft, differential mechanism 25's output shaft passes through synchronous belt drive with drive turntable 22.

Referring to fig. 1 and 2, limiting plates 23 are integrally formed on opposite side surfaces of the two driving turntables 22, the bearing plate 2 is erected on the limiting plates 23 of the two driving turntables 22, and the bearing plate 2 is connected with the limiting plates 23 through bolts; the driving motor 24 is a servo motor, the driving motor 24 is electrically connected with a power supply and a controller, and the driving motor 24 can drive the driving turntable 22 to rotate when working, so as to drive the bearing plate 2 to rotate.

Referring to fig. 2 and 3, an X-direction positioning assembly 4, a Y-direction positioning assembly 5 and a pressing assembly 6 are arranged on the bearing plate 2, the X-direction positioning assembly 4 is used for limiting the position of the blank in the length direction of the bearing plate 2, the Y-direction positioning assembly 5 is further used for limiting the position of the blank in the width direction of the bearing plate 2, and the pressing assembly 6 is used for pressing the blank on the bearing plate 2; therefore, the blank can be positioned and clamped more stably, and the machined precision of the blank is better improved.

Referring to fig. 2, the bearing plate 2 is close to the intermediate position and has been seted up the through-hole of stepping down 7, and the through-hole of stepping down 7 is long waist shape, and the through-hole of stepping down 7 can supply the processing to pass with the cutter to bearing plate 2 rotates 180 backs, and the bottom surface to the blank that the cutter on the lathe can be convenient is processed, makes the work piece need not to carry out the dismouting, has improved machining efficiency, has avoided the resetting of processing benchmark moreover, the machining precision of improvement final product that can be better.

Referring to fig. 3, the X-direction positioning assembly 4 includes a positioning column 13 and a positioning cylinder 14, an axis of the positioning column 13 is arranged along a height direction of the bearing plate 2, the positioning column 13 is arranged to penetrate through the bearing plate 2, the positioning cylinder 14 is bolted to a bottom surface of the bearing plate 2, and a piston shaft of the positioning cylinder 14 is fixedly connected with the positioning column 13; and one end of the positioning column 13, which is far away from the positioning cylinder 14, is provided with a guide inclined plane.

Referring to fig. 2 and 4, the Y-direction positioning assembly 5 includes a mounting seat 8 and a positioning block 9 disposed on the mounting seat 8; the mounting seat 8 is connected with the bearing plate 2 through a bolt, a positioning key 11 is integrally formed at the bottom of the mounting seat 8, a positioning key groove 12 matched with the positioning key 11 is formed in the bearing plate 2, and the positioning key 11 is matched with the positioning key groove 12, so that the positioning of the position relation between the mounting seat 8 and the bearing plate 2 is more accurate; a Y-direction positioning surface 10 is arranged at the middle position of the positioning block 9 facing the width direction of the bearing plate 2; y is equipped with two to locating component 5 along the length direction of loading board 2, and two locating surfaces are laminated with the side of blank for the blank can be better injectd in the ascending position of loading board 2 width direction, thereby the precision of assurance final product that can be better.

Referring to fig. 5 and 6, the pressing assembly 6 includes a pressing base 15, a pressing claw 16 and a pressing driving rod 17, the pressing base 15 is connected to the bearing plate 2 through a bolt, a pressing connecting rod 19 is hinged to the pressing base 15, one end, far away from the pressing base 15, of the pressing connecting rod 19 is hinged to the pressing claw 16, the axis of the pressing driving rod 17 is arranged along the height direction of the bearing plate 2, the pressing driving rod 17 slides along the axis direction of the pressing driving rod, and the pressing driving rod 17 penetrates through the pressing base 15; one end of the pressing driving rod 17 extending out of the pressing seat 15 is hinged with the pressing claw 16; a pressing cushion block 20 is connected to one end, far away from the pressing seat 15, of the pressing claw 16 through a bolt, and the pressing cushion block 20 can be replaced according to the height of a position where the blank needs to be pressed, so that the pressing assembly 6 can more stably press the blank on the bearing plate 2, the blank is more stably pressed, the blank is less prone to vibration or movement during processing, and the processing precision is guaranteed; the bearing plate 2 is provided with an accommodating groove 27, the accommodating groove 27 is arranged below the pressing seat 15, a pressing cylinder 18 welded with the pressing seat 15 is arranged in the accommodating groove 27, and a piston rod of the pressing cylinder 18 is welded with the pressing driving rod 17. The pressing assemblies 6 are provided with three sets on the bearing plate 2.

Referring to fig. 7, the bearing plate 2 is connected with four void-avoiding cushion blocks 21 through bolts, and the four void-avoiding cushion blocks 21 are respectively arranged at four corners close to the bearing plate 2; and a matching boss 26 is integrally formed on one side surface of the clearance cushion block 21 departing from the bearing plate 2.

The implementation principle of the embodiment is as follows: when the blank is clamped, firstly, the blank is placed on the matching boss 26, one side face of the blank is attached to the Y-direction positioning face 10, and meanwhile, the positioning cylinder 14 drives the positioning column 13 to extend out and enables the side face of the blank, which faces the positioning column 13, to be abutted against the positioning column 13; the pressure cylinder 18 then drives the pressure drive rod 17 out, so that the pressure claw 16 can stably press the blank against the carrier plate 2.

The embodiments of the present invention are the preferred embodiments of the present invention, and the protection scope of the present invention is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A clamp for precision machining of a machining center comprises a support frame (1) detachably connected with a machine tool machining platform and a bearing plate (2) used for mounting a blank; the method is characterized in that: the bearing plate (2) is rotatably connected with the support frame (1), and a driving assembly (3) for driving the bearing plate (2) to rotate is arranged on the support frame (1); the bearing plate (2) is provided with an X-direction positioning component (4) for limiting the position of the blank in the length direction of the bearing plate (2), a Y-direction positioning component (5) for limiting the position of the blank in the width direction of the bearing plate (2) and a pressing component (6) for pressing the blank on the bearing plate (2); the bearing plate (2) is provided with a abdicating through hole (7) for a machining cutter to pass through; y includes with loading board (2) can dismantle mount pad (8) of being connected and set up locating piece (9) on mount pad (8) to locating component (5), locating piece (9) set up in mount pad (8) towards the width direction protrusion of loading board (2), locating piece (9) are equipped with Y towards locating surface (10) that is used for with the laminating of blank surface towards one side of loading board (2) width direction's intermediate position.

2. The jig for precision machining of a machining center according to claim 1, characterized in that: the bottom of the mounting seat (8) is provided with a positioning key (11), and the bearing plate (2) is provided with a positioning key groove (12) matched with the positioning key (11).

3. The jig for precision machining of a machining center according to claim 1, characterized in that: at least two groups of Y-direction positioning components (5) are arranged in the length direction of the bearing plate (2).

4. The jig for precision machining of a machining center according to claim 1, characterized in that: x is including location cylinder (14) that reference column (13) and drive reference column (13) slided to locating component (4), reference column (13) slide and run through loading board (2) setting along loading board (2) direction of height.

5. The jig for precision machining of a machining center according to claim 1, characterized in that: the pressing assembly (6) comprises a pressing seat (15), a pressing claw (16) arranged on the pressing seat (15) and a pressing driving rod (17) used for driving the pressing claw (16) to swing, the bottom of the bearing plate (2) is connected with a pressing cylinder (18), a piston rod of the pressing cylinder (18) is connected with the pressing driving rod (17), the pressing driving rod (17) is hinged with the pressing claw (16), a pressing connecting rod (19) is hinged on the pressing seat (15), and one end, far away from the pressing seat (15), of the pressing connecting rod (19) is hinged with the pressing claw (16); the pressing assemblies (6) are arranged on the bearing plate (2) in a plurality.

6. The jig for precision machining of a machining center according to claim 5, characterized in that: one side of the pressing claw (16) facing the bearing plate (2) is detachably connected with a pressing cushion block (20).

7. The jig for precision machining of a machining center according to claim 1, characterized in that: the bearing plate (2) is detachably connected with a clearance cushion block (21), and the clearance cushion block (21) is at least three on the bearing plate (2).

8. The jig for precision machining of a machining center according to claim 1, characterized in that: support frame (1) is gone up to rotate and is connected with drive turntable (22), be equipped with limiting plate (23) on drive turntable (22), drive turntable (22) respectively is equipped with one at loading board (2) length direction's both ends, loading board (2) set up on limiting plate (23) and with limiting plate (23) bolted connection, drive assembly (3) include driving motor (24) and differential mechanism (25), the output shaft of driving motor (24) with the input shaft of differential mechanism (25), the output shaft and the drive turntable (22) of differential mechanism (25) are connected.