CN209998788U

CN209998788U - Positioning and clamping tool for workpieces

Info

Publication number: CN209998788U
Application number: CN201920529766.7U
Authority: CN
Inventors: 唐荣钢; 芮奕; 纪文荣; 阮鹏
Original assignee: Jiangsu Guoxie Machinery Technology Co Ltd
Current assignee: Jiangsu Yilian Heavy Industry Machinery Co.,Ltd.
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-01-31
Anticipated expiration: 2029-04-18

Abstract

The utility model discloses a location centre gripping frock of kinds of work pieces, including base plate, locating component, clamp plate and locking Assembly, locating component sets up on the base plate, just locating component is trilateral encircleing and side open-sided structural shape, locating component butt respectively on the adjacent three lateral wall of circumference of processed work piece, clamp plate and locking Assembly set up the opening side at locating component, just the clamp plate butt covers on being processed the work piece with pressing, the clamp plate attaches in the base plate top through the detachable lock of locking Assembly, fixes a position and prescribes a limit to through locating component the three degree of freedom on the horizontal direction of work piece, prescribes a limit to another degrees of freedom on the horizontal direction through clamp plate and locking Assembly again to with the work piece centre gripping on locating component through the clamp plate, prescribe a limit to the degree of freedom on the vertical direction of accomplishing the work piece.

Description

Positioning and clamping tool for workpieces

Technical Field

The utility model belongs to the machining field, in particular to location centre gripping frock of kinds of work pieces.

Background

In the machining process, different workpieces need to be clamped by various different tool fixtures, and the machining operation is completed, for example, kinds of workpieces to be machined as shown in fig. 1, wherein two upper end surfaces 1a and two lower end surfaces 1a are both working surfaces and have higher precision requirements, so that only the profile side wall 1b of the irregular side surface can be clamped, and the friction and damage to the upper end surface and the lower end surface are avoided.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, the utility model provides a positioning and clamping tool for kinds of workpieces, which can stably clamp the workpieces and ensure the surface precision of the workpieces.

The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the utility model is as follows:

positioning and clamping tool for workpieces comprises a base plate, a positioning assembly, a pressing plate and a locking assembly, wherein the positioning assembly is arranged on the base plate, the positioning assembly is in a structural shape with three sides surrounding and a side opening, the positioning assembly abuts against three circumferentially adjacent side walls of a workpiece to be processed respectively, the degrees of freedom of the three adjacent sides of the workpiece to be processed in the horizontal direction are limited by the positioning assembly, the pressing plate and the locking assembly are arranged on the opening side of the positioning assembly, the pressing plate abuts against and presses the workpiece to be processed, the pressing plate clamps the workpiece to be processed relative to the positioning assembly, and the pressing plate is detachably locked above the base plate through the locking assembly.

step, locking Assembly includes retaining member and support stopper, support the stopper interval and set up the opening side at locating component, just the retaining member sets up on supporting the base plate between stopper and the locating component, the clamp plate passes through the retaining member lock and attaches between support stopper and locating component, support stopper support clamp plate and limit clamp plate to keeping away from locating component's side displacement, just the inseparable butt of lateral wall towards locating component of clamp plate is on the lateral wall of being processed the work piece.

, the pressing plate is inclined to the base plate, and the contact point of the pressing plate abutting against the processed workpiece is higher than the contact point of the pressing plate abutting against the supporting limiting plate.

, the supporting limit plate is provided with a limit groove, the limit groove is arranged on the upper top surface of the supporting limit plate, and the press plate is connected with the limit groove.

, the locating component comprises two symmetrical locating blocks arranged at intervals, the locating blocks are of L-shaped structures, the short arms of the locating blocks are located on opposite sides of the opening sides of the locating component, locating adjusting structures are arranged on the inner walls of the locating blocks, and the machined workpieces are abutted to the locating blocks through the locating adjusting structures.

, positioning columns and locking bolts are correspondingly arranged on the two positioning blocks respectively, the positioning columns are used for positioning the side wall of the processed workpiece in the direction perpendicular to the clamped direction, the locking bolts are arranged on the positioning blocks in a threaded mode, the end of each locking bolt extends into the area between the two positioning blocks, the axis of each locking bolt is perpendicular to the clamping direction of the pressing plate, and the processed workpiece is abutted against and pressed on the positioning columns through the locking bolts.

The beneficial effects are that the utility model discloses a locating component fixes a position and prescribes a limit to the three degree of freedom on the horizontal direction of work piece, prescribes a limit to another degrees of freedom on the horizontal direction through clamp plate and locking Assembly again to through the clamp plate with the work piece centre gripping on locating component, prescribe a limit to the degree of freedom on the vertical direction of accomplishing the work piece, thereby the lateral wall of the work piece is processed to the complete centre gripping, and expose the terminal surface of the high accuracy requirement of work piece, prevent the terminal surface damage.

Drawings

FIG. 1 is a schematic structural diagram of a workpiece to be machined according to the present invention;

FIG. 2 is a schematic perspective view of the overall structure of the present invention;

FIG. 3 is a front view of the overall structure of the utility model in the state of clamping the workpiece;

fig. 4 is an enlarged schematic structural view of a part a in fig. 3 according to the present invention;

fig. 5 is a schematic perspective view of the overall structure of the clamping device of the present invention.

Detailed Description

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

As shown in fig. 1 to 5, the positioning and clamping tool for kinds of workpieces comprises a base plate 2, a positioning assembly 3, a pressing plate 4 and a locking assembly, wherein the positioning assembly 3 is arranged on the base plate 2, the positioning assembly 3 is in a structural shape with three sides surrounding and side opening and is approximately in a U shape, the positioning assembly 3 is respectively abutted against three circumferentially adjacent side walls of the workpiece 1 to be machined, the degrees of freedom of three adjacent sides in the horizontal direction of the workpiece 1 to be machined are defined by the positioning assembly 3, the pressing plate 4 and the locking assembly are arranged on the opening side of the positioning assembly 3, the pressing plate 4 is abutted against and pressed on the workpiece 1 to be machined, the pressing plate 4 clamps the workpiece 1 to be machined relative to the positioning assembly 3, the pressing plate 4 is detachably locked above the base plate 1 through the locking assembly, the three degrees of freedom in the horizontal direction of the workpiece are positioned and limited by the positioning assembly 3, another degrees of freedom in the horizontal direction are defined by the pressing plate 4 and the workpiece is clamped on the positioning assembly 3 through the pressing plate 4 to complete clamping of the workpiece in the vertical direction, so as to ensure the workpiece surface of the workpiece to be machined, and the workpiece is prevented from being damaged, and the workpiece has high-precision.

The supporting columns 5 are arranged on the base plate 2 on the inner ring side of the positioning component 3, the supporting columns 5 are respectively supported on the step surface 1c of the processed workpiece, and the processed workpiece 1 is suspended relative to the base plate 2 through the supporting columns 5, that is, the lower end surface of the processed workpiece 1 is spaced from the base plate, so that the end surface friction damage caused by the contact of the lower end surface of the workpiece and the base plate is avoided.

The locking assembly comprises a locking member and a supporting limiting block 9, the supporting limiting block 9 is arranged on the opening side of the positioning assembly 3 at intervals, the locking member is arranged on the base plate 2 between the supporting limiting block 9 and the positioning assembly 3, the pressing plate 4 is locked between the supporting limiting block 9 and the positioning assembly 3 through the locking member, the locking member comprises a screw 8 and a nut 7 screwed on the screw 8, the end of the screw 8 is fixedly arranged on the base plate 2, the other end extends upwards and penetrates through the pressing plate 4, the nut is locked above the pressing plate 4, the pressing plate 4 is of a V-shaped plate structure, the opening side of the pressing plate faces towards the processed workpiece 1, the supporting limiting block 9 supports the pressing plate 4 and the limiting pressing plate moves towards the side far away from the positioning assembly 3, the side wall of the pressing plate 4 facing the positioning assembly 3 tightly abuts against the side wall of the processed workpiece 1, the horizontal clamping direction displacement of the limiting pressing plate is achieved through the supporting limiting pressing block, the vertical direction displacement of the pressing plate 4 is achieved through the locking member, and the two contact surfaces 13 of the processed workpiece are pressed in a tooth-shaped contact surface, and the tooth-shaped structure is guaranteed to be stable.

As shown in fig. 3, the pressing plate 4 is disposed obliquely to the substrate 2, that is, the contact point of the pressing plate 4 abutting against the processed workpiece 1 is higher than the contact point of the pressing plate 4 abutting against the supporting limiting plate 9, so that the pressing plate 4 can generate an obliquely downward acting force on the workpiece in the process of pressing and clamping the workpiece, thereby ensuring stable clamping of the workpiece.

As shown in fig. 4, the supporting and limiting plate 9 includes a limiting groove 20, the limiting groove 20 is formed in an upper top surface of the supporting and limiting plate 9, the pressing plate 4 abuts against the limiting groove 20, the limiting groove 20 is of an L-shaped open groove structure, the limiting groove 20 includes a supporting surface 22 and a limiting surface 21, when the pressing plate abuts against the limiting groove 20, the limiting surface 21 abuts against and contacts the pressing plate to prevent the pressing plate from moving in the clamping direction, and the supporting surface 22 supports the pressing plate 4 to limit the vertical movement of the pressing plate 4; the workpiece 1 to be processed can be tightly clamped through the pressure plate which is arranged in an inclined mode; the screw rod 8 is also arranged in an inclined mode, and the screw rod 8 is perpendicular to the pressing plate 4, so that the locking axis of the screw rod nut can be perpendicular to the pressing plate, and the maximum locking force is provided.

As shown in fig. 2 and 5, the positioning assembly 3 includes two symmetrical and spaced positioning blocks 30, the positioning blocks 30 are L-shaped structures, two positioning blocks 30 form a U-shaped positioning component structure, the short arm of the positioning block 30 is located at the opposite side of the opening side of the positioning assembly, the inner wall of the positioning block 30 is provided with a positioning adjusting structure 6, the positioning adjusting structure 6 is a bolt, the screw thread is connected on the inner side wall of the positioning block 30, the axis of the bolt is on the horizontal plane and is vertical to the profile side wall 1b of the processed workpiece, the workpiece 1 to be processed is abutted against the positioning block 30 through the positioning adjusting structure 6, so that not only can the horizontal angle of the clamped workpiece 1 be adjusted through adjusting the extension length of the bolt, and the side wall of the workpiece can be spaced from the positioning block 30, so that the contact area is reduced, and the irregular outer wall of the workpiece can be clamped.

The two positioning blocks 30 are respectively and correspondingly provided with a positioning column 10 and a locking bolt 12, the positioning column 10 positions the side wall of the processed workpiece 1 perpendicular to the clamped direction, the locking bolt 12 is screwed on the positioning blocks 30, the end extends into the area between the two positioning blocks, the axis of the locking bolt is perpendicular to the clamping direction of the pressure plate 4, the processed workpiece is pressed against the positioning column 10 through the locking bolt, and when the workpiece is clamped and disassembled, the tightness adjustment of the locking bolt 12 can assist in positioning and clamping the workpiece, and the workpiece is favorably taken out and put in.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

The positioning and clamping tool for workpieces is characterized by comprising a substrate (2), a positioning assembly (3), a pressing plate (4) and a locking assembly, wherein the positioning assembly (3) is arranged on the substrate (2), the positioning assembly (3) is in a structural shape with three sides surrounding and a -side opening, the positioning assembly (3) abuts against three circumferentially adjacent side walls of a machined workpiece (1) respectively, the degrees of freedom of three adjacent sides of the machined workpiece (1) in the horizontal direction are limited by the positioning assembly (3), the pressing plate (4) and the locking assembly are arranged on the opening side of the positioning assembly (3), the pressing plate (4) abuts against and presses the machined workpiece (1), the pressing plate (4) clamps the machined workpiece (1) relative to the positioning assembly (3), and the pressing plate (4) is detachably locked above the substrate (2) through the locking assembly.
2. The workpiece positioning and clamping tool according to claim 1, wherein the locking assembly comprises locking members and supporting limit blocks (9), the supporting limit blocks (9) are arranged on the opening side of the positioning assembly (3) at intervals, the locking members are arranged on the base plate (2) between the supporting limit blocks (9) and the positioning assembly (3), the pressing plate (4) is locked between the supporting limit blocks (9) and the positioning assembly (3) through the locking members, the supporting limit blocks (9) support the pressing plate (4) and limit the displacement of the pressing plate to the side far away from the positioning assembly (3), and the side wall of the pressing plate (4) facing the positioning assembly (3) is in tight abutment with the side wall of the workpiece (1) to be machined.
3. The positioning and clamping tool for kinds of workpieces according to claim 2, wherein the pressure plate (4) is arranged obliquely to the base plate (2), and the contact point of the pressure plate (4) against the workpiece (1) to be processed is higher than the contact point of the pressure plate (4) against the support stopper (9).
4. The positioning and clamping tool for kinds of workpieces according to claim 3, wherein the supporting and limiting block (9) comprises a limiting groove (20), the limiting groove (20) is formed in the upper top surface of the supporting and limiting block (9), and the pressing plate (4) abuts against the limiting groove (20).
5. The workpiece positioning and clamping tool set forth in claim 1, wherein the positioning assembly (3) comprises two symmetrical positioning blocks (30) arranged at an interval, the positioning blocks (30) are L-shaped, the short arms of the positioning blocks (30) are located on opposite sides of the opening side of the positioning assembly, the inner wall of the positioning blocks (30) is provided with positioning adjustment structures (6), and the workpiece (1) to be machined is abutted against the positioning blocks (30) through the positioning adjustment structures (6).
6. The workpiece positioning and clamping tool set forth in claim 5, wherein two positioning blocks (30) are respectively and correspondingly provided with a positioning post (10) and a locking bolt (12), the positioning post (10) positions the side wall of the workpiece (1) to be machined, which is perpendicular to the clamped direction, the locking bolt (12) is screwed on the positioning blocks (30), the end extends into the area between the two positioning blocks, the axis of the locking bolt is perpendicular to the clamping direction of the pressing plate (4), and the workpiece to be machined is pressed against the positioning post (10) through the locking bolt.