CN209811741U

CN209811741U - Clamping fixture

Info

Publication number: CN209811741U
Application number: CN201822097180.6U
Authority: CN
Inventors: 王焕勇
Original assignee: Jeep Electronics (singapore) Co
Current assignee: Jeep Electronics (singapore) Co; Jabil Circuit Singapore Pte Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2019-12-20
Anticipated expiration: 2028-12-13

Abstract

A clamping fixture is suitable for clamping a workpiece. The clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the base frame comprises at least two first limiting parts, each clamping frame is connected to the base frame in a sliding mode and can slide to a clamping position for clamping a workpiece, each clamping frame comprises a second limiting part, the second limiting parts are matched with the corresponding first limiting parts to limit each clamping frame to be positioned at the clamping position, the driving assembly is arranged on the base frame, the actuating block is connected between the driving assembly and the clamping frames, and the actuating block can be driven by the driving assembly to drive each clamping frame to slide to the clamping position.

Description

Clamping fixture

Technical Field

The utility model relates to a clamping jig especially relates to a clamping jig for centre gripping location work piece.

Background

In the field of machining, a workpiece to be machined is usually clamped by a plurality of clamping jaws of a clamp so as to prevent the workpiece from shaking during machining. However, since the conventional clamp does not have a structure for limiting the moving stroke of the clamping jaw, the clamping jaw is likely to damage the workpiece due to an excessive moving stroke in the process of driving the clamping jaw to move towards the workpiece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can overcome the centre gripping tool of at least one shortcoming of background art.

The utility model discloses a purpose and solution background technical problem adopt following technical scheme to realize, the foundation the utility model provides a clamping jig is suitable for the centre gripping work piece.

The clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the base frame comprises at least two first limiting parts, each clamping frame is connected to the base frame in a sliding mode and can slide to a clamping position for clamping a workpiece, each clamping frame comprises a second limiting part, the second limiting parts are matched with the corresponding first limiting parts to limit each clamping frame to be positioned at the clamping position, the driving assembly is arranged on the base frame, the actuating block is connected between the driving assembly and the clamping frames, and the actuating block can be driven by the driving assembly to drive each clamping frame to slide to the clamping position.

The utility model discloses a clamping jig, first spacing portion with one of them has the rectangular groove of the spacing portion of second, and wherein another has wears to locate the spacer pin of rectangular inslot.

The utility model discloses a clamping jig, first spacing portion with one of them has the rectangular groove of the spacing portion of second, and is located the terminal surface of rectangular groove one end, first spacing portion with wherein another has of the spacing portion of second wears to locate the spacer pin of rectangular inslot, the spacer pin is used for the stop the terminal surface is so that each the holding frame location is in the clamping position.

The utility model discloses a clamping jig, each the holding frame can with the release position that the work piece separates reaches slide between the clamping position, actuating block can by the drive assembly drive and drive each the holding frame in the release position with slide between the clamping position, first spacing portion with one of them has the rectangular groove of second spacing portion, and is located the first terminal surface and the second terminal surface of rectangular groove opposite end, first spacing portion with one of them another of second spacing portion has wears to locate the spacer pin of rectangular inslot, the spacer pin is used for the block first terminal surface so that each the holding frame is fixed a position the release position, the spacer pin is used for the block the second terminal surface so that each the holding frame is fixed a position clamping position.

The utility model discloses a clamping jig, clamping jig contains four holding frames, wherein two of them can follow first direction sliding connection in the bed frame, wherein two of them can follow and be different from the second direction sliding connection of first direction in the bed frame, the bed frame includes four first spacing portions, actuating block can by the drive assembly drive and follow the perpendicular to first direction reaches the third direction of second direction removes, in order to drive each the holding frame slides extremely the clamping position.

The clamping fixture comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the base frame comprises at least two first limiting parts, the clamping frames can be connected to the base frame in a sliding manner along a first direction, each clamping frame can slide to a clamping position for clamping the workpiece and comprises a second limiting part and a first inclined surface guide part, the second limiting part is matched with the corresponding first limiting part, to limit each of the clamping frames from being positioned at the clamping position, the driving assembly being disposed on the base frame, the actuating block is connected with the driving component and comprises at least two second inclined plane guide parts, each second inclined plane guide part is connected with the first inclined plane guide part in a sliding way, the actuating block can be driven by the driving assembly to move along a third direction perpendicular to the first direction so as to drive each clamping frame to slide to the clamping position.

The clamping jig comprises a base frame, two clamping frames and an actuating block, wherein the base frame comprises two first limiting parts, each clamping frame is connected to the base frame in a sliding mode and can slide to a clamping position for clamping a workpiece, each clamping frame comprises a second limiting part and a first inclined plane guiding part, the second limiting part is matched with the corresponding first limiting part to limit each clamping frame to be positioned at the clamping position, the actuating block comprises a second inclined plane guiding part in sliding connection with the first inclined plane guiding part, and the actuating block can be driven to drive each clamping frame to slide to the clamping position.

The clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the base frame comprises at least two guiding grooves, each clamping frame is slidably arranged in the corresponding guiding groove of the base frame, an inclined surface is formed at the inner end of each clamping frame, the actuating block can be driven by the driving assembly to reciprocate in the direction perpendicular to the sliding direction of the clamping frames, and the actuating block forms an inclined surface corresponding to the inclined surface at the inner end of each clamping frame, so that the actuating block can drive the clamping frames to slide inwards or outwards in the corresponding guiding grooves of the base frame when moving to clamp or release the workpiece.

The clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the workpiece can be arranged on the upper surface of the base frame, an inclined surface is formed at the inner end of each clamping frame, a clamping head is arranged at the outer end of each clamping frame, the clamping heads can slide inwards or outwards relative to the base frame, the actuating block can be driven by the driving assembly to reciprocate in the direction perpendicular to the sliding direction of the clamping frames, and the actuating block forms an inclined surface corresponding to the inclined surface at the inner end of each clamping frame, so that the clamping frames can be driven to slide inwards or outwards when the actuating block moves, and the clamping heads at the outer ends of the clamping frames clamp or release the workpiece.

The clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the workpiece can be arranged on the upper surface of the base frame, an inclined surface is formed at the inner end of each clamping frame and can slide between the innermost clamping position and the outermost release position in a limited manner relative to the base frame, the actuating block can be driven by the driving assembly to reciprocate in the direction perpendicular to the sliding direction of the clamping frames, and the actuating block forms an inclined surface corresponding to the inclined surface at the inner end of each clamping frame, so that the clamping frames can be driven to slide between the clamping positions and the release positions when the actuating block moves, and the workpiece can be clamped or released.

The beneficial effects of the utility model reside in that: by matching each first limiting part with the corresponding second limiting part, the sliding stroke of the clamping frame sliding between the release position and the clamping position can be accurately controlled. Therefore, the situation that the distance of outward or inward movement of each clamping frame is too long can be prevented, and the workpiece is prevented from being damaged due to too large force of the clamping head for clamping the part to be clamped.

Drawings

Fig. 1 is an exploded perspective view of a workpiece and one embodiment of a clamping jig of the present invention;

FIG. 2 is an exploded perspective view of the embodiment illustrating the assembly relationship between the base frame, four clamping frames, the driving assembly and the actuating block;

FIG. 3 is a partial exploded perspective view of the embodiment illustrating the assembled relationship between the additional circuit board of the base frame and the clamping bracket;

FIG. 4 is a top view of the embodiment and the workpiece illustrating the holder in a disengaged position;

FIG. 5 is a cross-sectional view taken along line V-V in FIG. 4 illustrating the holder in the released position; and

fig. 6 is a cross-sectional view similar to fig. 5 illustrating the holder in a clamped position.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and embodiments:

before the present invention is described in detail, it is noted that like components are denoted by the same reference numerals in the following description.

Referring to fig. 1, the clamping fixture 200 according to an embodiment of the present invention can be applied to a machining tool machine such as a Computer Numerical Control (CNC) machine or a robot arm for clamping and positioning a workpiece 1 to perform a subsequent machining process.

The workpiece 1 is a rectangular outer frame of a smart phone, for example, and the workpiece 1 has an outer peripheral surface 11 and an inner peripheral surface 12 opposite to the outer peripheral surface 11. The outer circumferential surface 11 has four portions to be clamped 111, wherein two portions to be clamped 111 are arranged at intervals along a first direction D1, and the other two portions to be clamped 111 are arranged at intervals along a second direction D2 different from the first direction D1. In the present embodiment, the four portions to be clamped 111 are, for example, the outer surfaces of four corners of the workpiece 1. The first direction D1 and the second direction D2 are both horizontal and intersect at an angle.

Referring to fig. 2, 3, 4 and 5, the clamping fixture 200 includes a base frame 2, four clamping frames 3, a driving assembly 4, and an actuating block 5. The base frame 2 includes a bottom plate 21, two vertical plates 22, an additional circuit board 23, a plurality of guide blocks 25, and four first limiting portions 26. The base plate 21 is configured to be fixedly attached to a machine tool or a robot arm. The two vertical plates 22 are fastened to the top surface of the bottom plate 21 in a screw locking manner and are spaced from each other. The additional circuit board 23 includes a first board 230 and a second board 231. The first plate 230 is fastened to the top ends of the two vertical plates 22 by a plurality of bolts 232. The first plate 230 is rectangular and has a bottom surface 233, a top surface 234, two long side surfaces 235, and two short side surfaces 236. The first plate 230 is formed with an accommodation groove 237, four guide grooves 238, and four through holes 239. The receiving groove 237 is formed by the bottom surface 233 of the first board 230 being recessed toward the top surface 234 and is located at the center of the first board 230. The guiding grooves 238 are formed by the bottom surface 233 of the first plate 230 being recessed toward the top surface 234, and each guiding groove 238 is rectangular and has an inner end communicating with the receiving groove 237. Two of the guiding slots 238 are spaced apart from each other along the first direction D1 and extend along the first direction D1, and the other two guiding slots 238 are spaced apart from each other along the second direction D2 and extend along the second direction D2. The guide groove 238 of the first plate 230 is T-shaped when cut along a third direction D3 perpendicular to the first direction D1 and the second direction D2, and the third direction D3 is a longitudinal direction. The through holes 239 are formed by the top surface 234 of the first plate 230 being recessed toward the bottom surface 233 and are respectively communicated with the guiding grooves 238, and each through hole 239 is a stepped hole and has a shoulder 240. The second plate 231 has a long frame shape and is fastened to the top surface 234 of the first plate 230 by a plurality of bolts 241. The second plate 231 has a bearing plane 242 and a stopping plane 243. The bearing plane 242 has the same shape as the workpiece 1, and is an upper surface for bearing and supporting the workpiece 1. The stopping surface 243 is vertically connected to the bearing plane 242 for stopping the inner circumferential surface 12 of the workpiece 1.

The guide block 25 is fastened to the corresponding long side 235 or the corresponding short side 236 of the first plate 230 by two bolts 27 and protrudes a distance beyond the top end of the second plate 231. The number of guide blocks 25 in this embodiment is, for example, six, and two guide blocks 25 are locked to each long side surface 235, and one guide block 25 is locked to each short side surface 236. Each guide block 25 is used for guiding the workpiece 1 to move downwards along the third direction D3, so that the workpiece 2 can be reliably placed on the second plate 231.

In the present embodiment, each of the first position-limiting portions 26 has a position-limiting pin 261, a washer 262, and a retaining ring 263. The restraint pin 261 has a shaft portion 264 and a head portion 265 at the top end of the shaft portion 264. The outer peripheral surface of the stem portion 264 is radially recessed to form an annular groove 266 adjacent the bottom end. The position-limiting pin 261 is disposed through the corresponding through hole 239 and the corresponding guiding groove 238. The head 265 abuts against the shoulder 240 of the through hole 239 to prevent the stopper 261 from passing downward through the through hole 239 and the guide slot 238. The washer 262 is sleeved on the rod 264. The retaining ring 263 is fastened in the annular groove 266 and located below the washer 262 to prevent the washer 262 from separating from the rod 264.

Each holder 3 includes a slider 31, a collet 32, and a bolt 33. The sliding block 31 is rectangular and slidably connected to the corresponding guiding groove 238, the length direction of the sliding block 31 is the same as the length direction of the corresponding guiding groove 238, and the sliding block has a first inclined guiding portion 311 at the inner end and a second limiting portion 312 at the middle position. The collet 32 is L-shaped and is fastened to the outer end of the slider 31 by a bolt 33 for clamping the corresponding portion 111 to be clamped of the workpiece 1. Two of the holders 3 are slidable with respect to the additional circuit board 23 in the first direction D1, and the other two holders 3 are slidable with respect to the additional circuit board 23 in the second direction D2. Each holder 3 is slidable between a release position as shown in fig. 5 and a holding position as shown in fig. 6. In the release position, the collet 32 of each holding frame 3 can be separated from the corresponding portion to be clamped 111 of the workpiece 1. In the clamping position, the collet 32 of each clamping frame 3 can clamp the corresponding portion to be clamped 111. The second position-limiting portion 312 of each clamping frame 3 cooperates with the corresponding first position-limiting portion 26 of the base frame 2 to limit the positioning of each clamping frame 3 at the release position or the clamping position.

In the present embodiment, the first slope guide 311 of each holder 3 is a guide extending obliquely inward from top to bottom. The first inclined guide 311 has an inclined surface 310. The second position-limiting portion 312 has a rectangular groove 313 communicating with the corresponding through hole 239, and a first end surface 314 and a second end surface 315 at opposite ends of the rectangular groove 313. The length direction of the rectangular groove 313 is the same as the length direction of the slider 31, and the rod portion 264 of the corresponding stopper pin 261 is inserted into the rectangular groove 313. The pad 262 is used to abut against the bottom end of the slider 31. By the design of the pad 262 and the retaining ring 263, the stopper 261 is prevented from moving upward and moving away from the rectangular groove 313 and the through hole 239. The rod portion 264 of the stop pin 261 of each first stop portion 26 is used for stopping the first end surface 314 so as to position each clamping frame 3 at the release position, and the rod portion 264 of the stop pin 261 of each first stop portion 26 is also used for stopping the second end surface 315 so as to position each clamping frame 3 at the clamping position. The sliding stroke of the clamping frame 3 between the release position and the clamping position can be controlled by the cooperation of each first limiting part 26 and the corresponding second limiting part 312.

Referring to fig. 2 and 5, the driving assembly 4 is a cylinder, and includes a cylinder 41 and a piston rod 42. The cylinder 41 is locked on the bottom plate 21 and located between the two vertical plates 22 by a screw lock. The piston rod 42 is disposed through the cylinder 41 and protrudes out of the top end of the cylinder 41, and the piston rod 42 can move up and down relative to the cylinder 41 along the third direction D3. In other embodiments, the drive assembly 4 may also be a hydraulic cylinder.

The actuating block 5 is locked at the top end of the piston rod 42 by the bolt 6, and the actuating block 5 can be driven by the piston rod 42 to move up and down in the accommodating groove 237 along the third direction D3. The actuating block 5 includes four second inclined plane guides 51 arranged at intervals, each second inclined plane guide 51 is a guide slot extending obliquely from top to bottom and inwardly, and each second inclined plane guide 51 is slidably connected to the corresponding first inclined plane guide 311. The inner side of each second inclined guide 51 is an inclined surface 50, and the inclined surfaces 50 are corresponding to and abut against the inclined surfaces 310 of the first inclined guide 311. When the actuating block 5 is driven by the piston rod 42 of the driving assembly 4 to move along the third direction D3, the lateral component force applied by the actuating block 5 to the corresponding first inclined guiding portion 311 through each second inclined guiding portion 51 will cause the sliding block 31 to slide in the guiding slot 238, so as to drive each clamping frame 3 to slide between the releasing position and the clamping position.

The following will describe in detail the manner in which the clamping jig 200 clamps and positions the workpiece 1:

referring to fig. 4 and 5, first, the piston rod 42 of the driving assembly 4 drives the actuating block 5 to move downward along the third direction D3, and during the downward movement of the brake block 5, the lateral force component applied by each second inclined guiding portion 51 to the corresponding first inclined guiding portion 311 pushes the sliding block 31 to slide outward in the guiding groove 238, so that two clamping frames 3 slide and move away from each other along the first direction D1, and the other two clamping frames 3 slide and move away from each other along the second direction D2. When the first end surface 314 of the second position-limiting portion 312 of each holding frame 3 contacts the rod portion 264 of the corresponding position-limiting pin 261, it is blocked by the first end surface 314, so that each holding frame 3 is positioned at the release position as shown in fig. 5. The rod 264 of each limit pin 261 stops the first end surface 314 to position each holding frame 3 at the release position, so that the sliding stroke of each holding frame 3 when sliding outwards can be limited and accurately controlled, and the situation that the distance of each holding frame 3 moving outwards is too long can be prevented.

Referring to fig. 1, 4 and 5, the workpiece 1 is aligned with the bearing plane 242 of the second board 231 of the additional circuit board 23, and the workpiece 1 is moved downward along the third direction D3. When the workpiece 1 is slightly shifted during the downward movement process, and the bottom edge of the outer peripheral surface 11 touches the top edge of the inner side of any one of the guide blocks 25, the guide block 25 will guide the position of the workpiece 1 to slightly move inward. Then, the workpiece 1 is guided by the guide block 25 to move downwards along the third direction D3, so that the workpiece 1 can be reliably placed on the carrying plane 242. When the workpiece 1 is placed on the carrying plane 242, the four portions to be clamped 111 of the workpiece 1 are aligned with the four chucks 32, respectively. By stopping the inner circumferential surface 12 of the workpiece 1 by the stop surface 243, the workpiece 1 can be prevented from rotating on the second plate 231.

Referring to fig. 6, the piston rod 42 of the driving assembly 4 drives the actuating block 5 to move upward along the third direction D3, and during the upward movement of the actuating block 5, the lateral force component applied by each second inclined surface guiding portion 51 to the corresponding first inclined surface guiding portion 311 pulls the sliding block 31 to slide inward in the guiding groove 238, so that two of the clamping frames 3 slide and approach each other along the first direction D1, and the other two clamping frames 3 slide and approach each other along the second direction D2 (as shown in fig. 4). When the second end face 315 of each clamping frame 3 touches the rod portion 264 of the corresponding limit pin 261, it will be blocked by the corresponding limit pin, so that the four clamping frames 3 can be simultaneously positioned at the clamping position shown in fig. 6. At this time, the chucks 32 of the four holding frames 3 are respectively clamped to the four portions to be held 111 of the workpiece 1 to center the workpiece 1 so that the workpiece 1 can be subjected to a subsequent processing operation. The rod 264 of each limit pin 261 stops the second end surface 315 to position each clamping frame 3 at the clamping position, so that the sliding stroke of each clamping frame 3 during inward sliding can be accurately controlled and limited, and the situation that the force applied by the chuck 32 to the portion to be clamped 111 is too large due to too long inward moving distance of each clamping frame 3, and the portion to be clamped 111 is recessed and deformed to damage the workpiece 1 is avoided.

Referring to fig. 5, after the processing of the workpiece 1 is completed, the piston rod 42 of the driving assembly 4 drives the actuating block 5 to move downward along the third direction D3, so that the actuating block 5 pushes each clamping frame 3 to slide to the releasing position where the clamping head 32 is separated from the corresponding portion to be clamped 111. Then, the workpiece 1 is moved upward in the third direction D3 and removed from the second plate 231, so that the workpiece 1 can be taken out.

Referring to fig. 1 and 2, it should be noted that, by detachably assembling the second plate 231 of the additional circuit board 23 to the first plate 230 through the bolts 241, the second plate 231 can be replaced according to the shape of the workpiece 1, so that the replaced second plate can be matched with workpieces of different shapes. Therefore, the applicability, the breadth and the elasticity of the additional circuit board 23 when bearing the workpiece 1 can be improved.

The clamping jig 200 of the present embodiment may also have different variations as follows:

referring to fig. 5, one embodiment is: the detailed structure designs of the first position-limiting parts 26 of the base frame 2 and the second position-limiting parts 312 of the clamping frames 3 can be interchanged. Specifically, each first limiting portion 26 has a rectangular groove, a first end surface and a second end surface, and the rectangular groove, the first end surface and the second end surface are formed on the first board 230 of the additional circuit board 23. Each second position-limiting portion 312 has a position-limiting pin, a spacer and a retaining ring, the slide block 31 of the holder 3 forms a through hole which is upside down with respect to the through hole 239, and the position-limiting pin 261 are upside down and penetrate through the through hole and the rectangular groove from bottom to top. The spacer and the retaining ring are located on the top surface 234 of the first plate 230 to prevent the limiting pin from moving downward and moving away from the through hole and the rectangular groove.

Referring to fig. 4, another embodiment is: the clamping jig 200 omits the two clamping frames 3 moving in the second direction D2, so that the clamping jig 200 clamps the workpiece 1 by the two clamping frames 3 moving in the first direction D1.

Referring to fig. 1 and 4, another embodiment is: the holder replaces one of the holders 3 moving in the first direction D1 by fixing it to the additional circuit board 23 and abutting against one of the portions to be held 111. The other holder replaces one of the holders 3 in the second direction D2 by fixing the other holder to the additional circuit board 23 and abutting against the other portion to be held 111. The remaining two portions to be clamped 111 are clamped by the two clamping frames 3 moving along the first direction D1 and the second direction D2, respectively, so that the effect of clamping and positioning the workpiece 1 can be achieved as well.

In summary, the clamping fixture 200 of the present embodiment can precisely control the sliding stroke of the clamping frame 3 between the releasing position and the clamping position by the cooperation of each first position-limiting portion 26 and the corresponding second position-limiting portion 312. Therefore, the situation that the distance of outward or inward movement of each clamping frame 3 is too long can be prevented, so as to avoid the damage of the workpiece 1 caused by too large force of the clamping head 32 for clamping the to-be-clamped part 111, and the purpose required by the utility model can be achieved.

Claims

1. A clamping fixture is suitable for clamping a workpiece; the method is characterized in that:

2. The clamping fixture of claim 1, wherein: one of the first limiting part and the second limiting part is provided with a rectangular groove, and the other one of the first limiting part and the second limiting part is provided with a limiting pin penetrating through the rectangular groove.

3. The clamping fixture of claim 1, wherein: one of the first limiting part and the second limiting part is provided with a rectangular groove and an end face positioned at one end of the rectangular groove, the other one of the first limiting part and the second limiting part is provided with a limiting pin penetrating through the rectangular groove, and the limiting pin is used for stopping the end face so as to position each clamping frame at the clamping position.

4. The clamping fixture of claim 1, wherein: each clamping frame can slide between a release position separated from the workpiece and the clamping position, the actuating block can be driven by the driving assembly to drive each clamping frame to slide between the release position and the clamping position, one of the first limiting part and the second limiting part is provided with a rectangular groove, a first end face and a second end face which are positioned at opposite ends of the rectangular groove, the other one of the first limiting part and the second limiting part is provided with a limiting pin penetrating through the rectangular groove, the limiting pin is used for stopping the first end face so that each clamping frame is positioned at the release position, and the limiting pin is used for stopping the second end face so that each clamping frame is positioned at the clamping position.

5. The clamping fixture of claim 1, wherein: the clamping jig comprises four clamping frames, two of the clamping frames can be connected to the base frame in a sliding mode along a first direction, the other two of the clamping frames can be connected to the base frame in a sliding mode along a second direction different from the first direction, the base frame comprises four first limiting portions, and the actuating block can be driven by the driving assembly to move along a third direction perpendicular to the first direction and the second direction so as to drive each clamping frame to slide to the clamping position.

6. A clamping fixture is suitable for clamping a workpiece; the method is characterized in that:

the clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the base frame comprises at least two first limiting parts, the clamping frames can be connected to the base frame in a sliding mode along a first direction, each clamping frame can slide to a clamping position for clamping the workpiece and comprises a second limiting part and a first inclined plane guide part, the second limiting part is matched with the corresponding first limiting part so as to limit each clamping frame to be positioned at the clamping position, the driving assembly is arranged on the base frame, the actuating block is connected to the driving assembly and comprises at least two second inclined plane guide parts, each second inclined plane guide part is connected with the first inclined plane guide part in a sliding mode, and the actuating block can be driven by the driving assembly to move along a third direction perpendicular to the first direction, so as to drive each clamping frame to slide to the clamping position.

7. A clamping fixture is suitable for clamping a workpiece; the method is characterized in that:

8. A clamping fixture is suitable for clamping a workpiece; the method is characterized in that:

9. A clamping fixture is suitable for clamping a workpiece; the method is characterized in that:

10. A clamping fixture is suitable for clamping a workpiece; the method is characterized in that:

the clamping jig comprises a base frame, at least two clamping frames, a driving assembly and an actuating block, wherein the workpiece can be arranged on the upper surface of the base frame, an inclined surface is formed at the inner end of each clamping frame and can slide between the innermost clamping position and the outermost release position in a limited manner relative to the base frame, the actuating block can be driven by the driving assembly to reciprocate in the direction perpendicular to the sliding direction of the clamping frames, and the actuating block forms an inclined surface corresponding to the inclined surface at the inner end of the clamping frame, so that the clamping frames can be driven to slide between the clamping position and the release position when the actuating block moves, and the workpiece can be clamped or released.