CN217345242U

CN217345242U - Jig for positioning workpiece

Info

Publication number: CN217345242U
Application number: CN202220364927.3U
Authority: CN
Inventors: 金界华
Original assignee: Suzhou Zhuoqun Electromechanical Technology Co ltd
Current assignee: Suzhou Zhuoqun Electromechanical Technology Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-09-02
Anticipated expiration: 2032-02-22

Abstract

The utility model provides a jig for positioning a workpiece, which comprises a horizontal supporting structure and a vertical fixing structure, wherein the horizontal supporting structure supports the workpiece; the vertical fixing structure is a clamping jaw mechanism and comprises a cylinder body, a positioning groove block, a movable clamping jaw and a fixed clamping jaw, wherein the fixed clamping jaw and the movable clamping jaw are respectively arranged on the inner side and the outer side of a workpiece, the fixed clamping jaw is fixed on the positioning groove block, the movable clamping jaw is hinged on a piston rod of the cylinder body, the cylinder body can drive the movable clamping jaw to move, the movable clamping jaw and the fixed clamping jaw are matched to clamp the workpiece, and the workpiece is prevented from deforming while being fastened.

Description

Jig for positioning workpiece

Technical Field

The utility model belongs to the technical field of the frock, concretely relates to tool for work piece location.

Background

In the processes of machining, assembling and detecting parts, in order to improve the operation precision, it is generally necessary to accurately fix the position of a workpiece and then perform subsequent machining, assembling or detecting operations. The existing tool clamp mostly adopts a diagonal type fixing structure, and for a thin-wall workpiece, the stress points of the whole workpiece are concentrated on the diagonal and are not balanced. The design easily causes the thin-wall workpiece to be extruded and deformed during processing in the actual use process, cannot well play a role in fastening the workpiece, and is difficult to effectively ensure the operation precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tool for work piece location for solve the technical problem that thin wall work piece warp in the fastening process.

A jig for positioning a workpiece comprises a base, a horizontal supporting structure, a vertical fixing structure and a screw rod adjusting structure, wherein the horizontal supporting structure, the vertical fixing structure and the screw rod adjusting structure are fixed on the base; vertical fixed knot constructs for clamping jaw mechanism, the clamping jaw cylinder includes cylinder body, positioning groove piece, moves the clamping jaw and decides the clamping jaw, and the positioning groove piece is installed in cylinder body the place ahead, moves the articulated piston rod of installing on the cylinder body in bottom of clamping jaw, moves the middle part of clamping jaw and passes through the axle and articulate and install on the positioning groove piece, decides the clamping jaw install on the positioning groove piece and with move and form the clearance between the clamping jaw, the cylinder body can drive move the clamping jaw activity, make it presss from both sides tightly with deciding the clamping jaw cooperation move the clamping jaw work piece.

The positioning groove block is provided with a movable groove in a molding mode, and the movable groove provides a rotating space for the movable clamping jaw.

The vertical fixing structures are arranged at four corners of the workpiece.

And a screw rod fixer is arranged beside the vertical fixing structures and used for adjusting the distance between the two vertical fixing structures with opposite length directions.

The screw rod fixer comprises a screw rod and a locking block, a thread groove in the locking block is meshed with the screw rod, and the locking block is detachably arranged on the vertical fixing structure.

The horizontal support structures are located at the side edges and the top corners of the workpiece.

The horizontal supporting structure at the top angle of the workpiece is provided with a cylindrical bulge, and the bulge is matched with the groove at the top angle of the workpiece to play a role of pre-fixing.

The utility model has the advantages that: the cylinder drive that is located the vertical fixed knot in four corners constructs clamping jaw cylinder articulates the clamping jaw that moves on the piston rod, makes the clamping jaw wind the pivot rotary motion at its middle part to with fix the clamping jaw on the cylinder block and mutually support the work piece of pressing from both sides tight processing, because four ends all have stress points, and the area of contact between work piece and the clamping jaw is less, so the bigger more balanced under the force ratio general condition that the work piece receives, the utility model discloses can effectively prevent the deformation of work piece in the fastening work piece, improve mechanical assembly's operation precision. Meanwhile, the distance between two vertical fixing structures with opposite length directions can be adjusted through the screw rod fixer beside the vertical fixing structures, so that the screw rod fixer is suitable for workpieces with different specifications and sizes, and the utilization rate and the practicability of the workpiece clamp are improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of the present invention, in which the lower right corner of the cylinder base is omitted;

fig. 2 is a top view of the present invention;

FIG. 3 is a partial enlarged view of the movable jaw portion of the present invention;

fig. 4 is a perspective view of the pre-fixing structure of the present invention;

fig. 5 is a partially enlarged view of a portion a in fig. 4.

Labeled as: 100. a base; 200. a first support; 201. a groove; 202. a protrusion; 300. a second support; 301. a support cylinder; 302. a support cylinder; 400. a vertical fixed structure; 401. a cylinder body; 402. positioning the groove block; 403. a movable clamping jaw; 404. a rotating shaft; 405. a piston rod; 406. fixing a clamping jaw; 407. a movable groove; 500. a screw rod adjusting structure; 501. a locking block; 502. and a screw rod.

Detailed Description

As shown in fig. 1, a jig for positioning a workpiece includes: a base 100, and a horizontal supporting structure, a vertical fixing structure 400 and a screw adjusting structure 500 fixed on the base 100.

Referring to fig. 4, the top surface of the second supporting body 300 at the edge of the base is provided with a supporting cylinder 302, the upper surface of which is a plane and is attached to the bottom surface of the workpiece during processing, so that the workpiece is supported by a uniform supporting force and can perform a stable bearing function.

Referring to fig. 5, a cylindrical protrusion 202 is disposed on the top surface of the first supporting body 200 at the top corner of the base, and matches with the groove 201 disposed at the top corner of the workpiece, and vertical patterns are engraved on the surface of the protrusion 202, so as to increase the friction force between the protrusion 202 and the groove 201, so that the protrusion 202 is more tightly embedded into the gap corresponding to the groove 201, thereby fixing the top corner of the workpiece and pre-fixing the whole workpiece.

The vertical fixing structures 400 are five clamping jaw mechanisms, which are respectively arranged at the top corner and the side edge of the base 100, and referring to fig. 1 to 3, the clamping jaw mechanisms include: a cylinder body 401, a positioning groove block 402, a movable clamping jaw 403 and a fixed clamping jaw 406,

the fixed jaw 406 is positioned inside the workpiece, is fixed to the positioning groove block 402 by a bolt, cannot move during machining, and can only be matched with the movable jaw 403 to clamp the workpiece.

The movable clamping jaw 403 is located on the outer side of the workpiece, the bottom of the movable clamping jaw 403 is hinged to a piston rod 405 of the cylinder body 401, the middle of the movable clamping jaw 403 is hinged to the positioning groove block 402 through a rotating shaft 404, and when the movable clamping jaw 403 rotates around the rotating shaft 404 under the driving action of the cylinder body 401 and is matched with the fixed clamping jaw 406 to clamp the workpiece.

The positioning groove block 402 is formed with a movable groove 407, the rotating range of the movable clamping jaw 403 is the space of the movable groove 407, and the rotating shaft 404 is located in the middle of the movable clamping jaw 403, so that the movement of the movable clamping jaw 403 is more stable and controllable, the movement amplitude of the movable clamping jaw 403 can be controlled more accurately, and the operation efficiency and the operation precision are improved.

The area of contact between clamping jaw and the work piece is less this moment, and the atress is bigger, and the four corners of work piece all has vertical fixed knot to construct, and the atress is more balanced, and this tool has effectively prevented the deformation of work piece when fastening the work piece more.

Referring to fig. 1 and 2, the screw adjustment mechanism 500 is disposed beside the vertical fixing structure 400 and includes a lock 501 and a screw 502. The locking piece 501 is installed on the vertical fixing structure 400 through a bolt, a thread groove in the locking piece 501 is meshed with the screw rod 502, the locking piece 501 can move back and forth along with the screw rod 502 when the screw rod 502 is rotated, then the locking piece 501 is locked on the vertical fixing structure 400 through the bolt, and therefore the distance between two vertical fixing structures 400 opposite in length direction is adjusted, the design is convenient to adapt to the specification sizes of different workpieces, the application range of the clamp is expanded, and the practicability of the clamp is improved.

The use process of this tool does:

adjusting the position of a locking block on the screw rod adjusting structure to enable the distance between two vertical fixing structures opposite in the length direction to be matched with the specification of a workpiece, and then locking the locking block 501 on the vertical fixing structure 400;

placing the workpiece on a horizontal support structure, and pre-positioning the workpiece by the bulge 202 on the first support body at the top angle of the base;

the clamping jaw cylinder is started to make the movable clamping jaw 403 rotate towards the inner side of the workpiece, and the fixed clamping jaw 406 is matched to clamp the workpiece.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A jig for positioning a workpiece comprises a base (100), a horizontal supporting structure, a vertical fixing structure (400) and a screw rod adjusting structure (500) which are arranged on the base, and is characterized in that,

the horizontal support structure comprises a first support body (200) and a second support body (300), wherein,

the first support body (200) is used for supporting a workpiece and at least one of the first support body and the second support body,

the second supporting body (300) is used for adjusting the height of a workpiece, and the second supporting body (300) is a lifting column;

vertical fixed knot constructs (400) is the clamping jaw mechanism, the clamping jaw mechanism includes cylinder body (401), location groove piece (402), moves clamping jaw (403) and decides clamping jaw (406), wherein: the positioning groove block (402) is installed in front of the cylinder body (401), the bottom of the movable clamping jaw (403) is hinged to a piston rod (405) of the cylinder body (401), the middle of the movable clamping jaw (403) is hinged to the positioning groove block (402) through a rotating shaft (404), and the fixed clamping jaw (406) is installed on the positioning groove block (402) and forms a gap with the movable clamping jaw (403).

2. The jig for positioning workpieces of claim 1, wherein the first support (200) is disposed at the edge of the base (100).

3. The jig for positioning workpieces of claim 1, wherein the first support (200) is cylindrical in shape.

4. A jig for positioning a workpiece as claimed in claim 3, wherein the first support (200) is provided with a cylindrical protrusion (202) on the top surface thereof.

5. The jig for positioning workpieces of claim 1, wherein the second supporting body (300) is a supporting cylinder (301).

6. The jig for positioning workpieces as recited in claim 1, wherein said positioning slot block (402) is formed with a movable slot (407).

7. The jig for positioning the workpiece as recited in claim 1, wherein the screw rod adjusting structure (500) comprises a lock block (501) and a screw rod (502), a thread groove in the lock block (501) is engaged with the screw rod (502), and the lock block (501) is mounted on the vertical fixing structure (400) through a bolt.