CN216503538U

CN216503538U - Workpiece clamp

Info

Publication number: CN216503538U
Application number: CN202122542206.5U
Authority: CN
Inventors: 吴志强; 刘金伟; 徐力山; 付正勇
Original assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Current assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-05-13
Anticipated expiration: 2031-10-21

Abstract

A workpiece clamp comprises a base, an adjusting seat, a supporting assembly and a clamping assembly; the adjusting seat is arranged on the base and is in pivot fit with the base, and the bottoms of two ends of the adjusting seat form a pressing surface respectively; the supporting component comprises two supporting blocks and two adjusting screws, the two adjusting screws are screwed on the base and are respectively used for driving the two supporting blocks to move along the length direction of the base, supporting inclined planes are formed on the upper surfaces of the supporting blocks, and the supporting inclined planes on the two supporting blocks are respectively abutted to the lower parts of the two pressing planes; two ends of the adjusting seat are respectively provided with a tensioning piece which is used for fixing the adjusting seat and the base; the clamping assembly comprises two clamping blocks which are arranged on the base and are respectively positioned on two sides of the adjusting seat. When the workpiece is clamped, the angle of the adjusting seat is adjustable, so that the clamp can clamp the workpiece according to different angles, the clamping requirements of different workpieces are met, the application range of the clamp is enlarged, the equipment cost is reduced, and the processing efficiency of the workpiece is improved.

Description

Workpiece clamp

Technical Field

The utility model relates to the technical field of part processing, in particular to a workpiece clamp.

Background

When a workpiece is subjected to surface milling, drilling and other machining processes, the workpiece is usually clamped and fixed by a clamp so as to ensure the machining precision of the workpiece; when clamping is carried out on different parts, due to the fact that the using angle range of the clamp is limited, a plurality of different sets of tools are needed to meet the clamping requirements of different workpieces, the universality of the existing clamp is poor, the equipment cost for processing the workpieces is high due to the plurality of sets of tools, and the tools need to be frequently replaced when the clamps are used for processing different workpieces, so that the processing efficiency of the workpieces is low.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a workpiece clamp which can meet the clamping requirements of different workpieces, so that the application range of the clamp is enlarged, the equipment cost is reduced, and the processing efficiency of the workpieces is improved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a workpiece clamp comprises a base, an adjusting seat for bearing a workpiece, a supporting assembly and a clamping assembly;

the adjusting seat is arranged on the base and is in pivot fit with the base, the relative rotating axis of the adjusting seat and the base is consistent with the width direction of the base, and the bottoms of the two ends of the adjusting seat form a pressing surface respectively;

the supporting component comprises two supporting blocks which are respectively positioned at two sides of the adjusting seat and two adjusting screws which respectively correspond to the two supporting blocks, the two adjusting screws are screwed on the base and are respectively used for driving the two supporting blocks to move along the length direction of the base so as to enable the supporting blocks to be close to or far away from the adjusting seat, a supporting inclined plane with a low inner side and a high outer side is formed on the upper surface of each supporting block, and the supporting inclined planes on the two supporting blocks are respectively abutted to the lower parts of the two pressing surfaces;

two ends of the adjusting seat are respectively provided with a tensioning piece, and the tensioning pieces and the base are detachably fixed to fix one end of the adjusting seat corresponding to the tensioning pieces and the base;

the clamping assembly comprises two clamping blocks which are arranged on the base and are respectively positioned on two sides of the adjusting seat, and the two clamping blocks are respectively used for pressing the workpiece on two sides of the workpiece.

The both ends of adjustment seat outwards extend respectively and form an extension arm, and the surface that compresses tightly is located the lower surface of extension arm.

The tensioning piece is a tensioning bolt connected on the extension arm in a penetrating way; be provided with two mounting grooves that open side down on the base, the roof of two mounting grooves all forms a spherical shell, all be provided with one in two mounting grooves with the universal complex bulb of spherical shell, set up threaded hole on the bulb, be provided with the through-hole that extends to the base upper surface on the roof of two mounting grooves, two tie bolts penetrate the through-hole respectively from top to bottom and in the screw hole of two bulbs of difference spiro union.

A top plate is fixed at the top of the base, and the mounting groove is formed in the lower surface of the top plate.

The clamping assembly comprises two swing arms and a driving piece, the swing arms are oppositely arranged, the middle portions of the swing arms are hinged to the base, the two clamping blocks are respectively located at the tops of the two swing arms, and the driving piece is used for pushing the bottoms of the two swing arms to enable the bottoms of the two swing arms to synchronously move towards directions away from each other.

The driving piece comprises an ejector block which is installed on the base in a sliding mode and an oil cylinder which is used for driving the ejector block to move along the length direction of the base, two sides of the ejector block respectively form a pushing inclined plane, and the bottoms of the two swing arms are respectively abutted to the outer sides of the two pushing inclined planes.

The bottom of the swing arm is pivoted with a roller pressed on the pushing inclined plane.

The base is provided with an elastic piece used for pushing the bottom of the swing arm towards the direction close to the ejector block.

The workpiece clamp comprises two clamping assemblies, wherein the two clamping assemblies are arranged along the length direction of the base, and the two clamping assemblies are respectively positioned on two sides of the adjusting seat relative to the rotation axis of the base.

The clamping block is provided with a plurality of convex teeth, the plurality of convex teeth are used for pressing the outer surface of the workpiece when the clamping block compresses the workpiece, the inner side of the top of the swing arm is provided with a mounting seat, the clamping block is detachably fixed on the mounting seat, the mounting seat is provided with a plurality of first convex teeth arranged along the height direction, the swing arm is provided with a plurality of second convex teeth arranged along the height direction, the first convex teeth and the second convex teeth are mutually occluded, and the mounting seat and the swing arm are fixedly connected together through bolts.

The utility model has the beneficial effects that:

compared with the existing clamp, when the clamp is used for clamping a workpiece, the angle of the adjusting seat is adjustable, so that the clamp can clamp the workpiece according to different angles, the clamping requirements of different workpieces are met, the application range of the clamp is enlarged, only the angle of the adjusting seat needs to be changed through the adjusting screw, multiple sets of tools are not needed, the tools do not need to be frequently replaced, the equipment cost is reduced, and meanwhile, the machining efficiency of the workpiece is improved.

Drawings

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

FIG. 2 is a view taken along line A of FIG. 1;

fig. 3 is a schematic structural diagram of the driving member of the present invention.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2 and 3, a workpiece fixture according to the present invention comprises a base 10, an adjusting seat 20, a supporting assembly and a clamping assembly, wherein the base 10 is a mounting base portion of the whole fixture, and the adjusting seat 20 is used for bearing a workpiece 90; in the figure, the X direction is the longitudinal direction of the base 10, the Y direction is the width direction of the base 10, and the Z direction is the height direction of the base 10; the adjusting seat 20 is installed on the top of the base 10, and the adjusting seat 20 is pivoted on the base 10 through a rotating shaft 21, the extending direction of the rotating shaft 21 is consistent with the width direction of the base 10, that is, the rotating shaft 21 extends along the Y direction, the bottoms of the two ends of the adjusting seat 20 respectively form a pressing surface, and the two pressing surfaces are respectively located on the two sides of the rotating shaft 21; the supporting component comprises two supporting blocks 30 and two adjusting screws 31, the two supporting blocks 30 are respectively located at two sides of the adjusting seat 20, the two adjusting screws 31 respectively correspond to the two supporting blocks 30, specifically, the supporting blocks 30 are installed on the base 10 and can slide along the length direction of the base 10, the supporting blocks 30 can be installed on the base 10 through a chute and a guide rail linear guide structure extending along the X direction, the two adjusting screws 31 are all screwed on the base 10, and the inner side ends of the adjusting screws 31 are connected at the outer sides of the corresponding supporting blocks 30, when the adjusting screws 31 are rotated, the supporting blocks 30 can be pulled to move along the X direction, so that the supporting blocks 30 are close to or far away from the adjusting seat 20, a supporting inclined plane 32 is formed on the upper surface of each supporting block 30, the inner side of the supporting inclined plane 32 is low, the outer side of the supporting inclined plane 32 is high, that the height of the supporting inclined plane 32 gradually increases from the inner side to the outer side, or, the height of the supporting inclined surface 32 gradually increases from the end close to the adjusting seat 20 to the end far from the adjusting seat 20, the supporting inclined surfaces 32 on the two supporting blocks 30 respectively abut against the lower portions of the two pressing surfaces, that is, the two supporting inclined surfaces 32 are respectively supported below the two ends of the adjusting seat 20, and the placing angle of the adjusting seat 20 relative to the base 10 can be changed by rotating the two adjusting screws 31. Install a taut respectively at the both ends of adjustment seat 20, taut is fixed with a base 10 detachable mode for with adjustment seat 20 on with the one end that the taut corresponds with the base 10 fixed, so, when adjusting supporting shoe 30 to relevant position through two adjusting screw 31, make two support inclined planes 32 support respectively and compress tightly the below at two, the angle of adjusting block 20 has been adjusted, behind the taut both ends of adjusting block 20 of two taut pieces, fix two taut pieces respectively on the base, so, make adjusting block 20 and base 10 keep fixed. The clamping assembly includes two clamping blocks 44 mounted on the base 10, the two clamping blocks are respectively located at two sides of the adjusting seat 20 and are oppositely arranged, and the two clamping blocks 44 are respectively used for pressing the workpiece at two sides of the workpiece 90.

When the workpiece clamp of the utility model clamps a workpiece 90, the position of the supporting block 30 can be moved by rotating the two adjusting screws 31, so that the workpiece 90 on the adjusting seat 20 is adjusted to an angle suitable for milling and drilling, the supporting inclined plane 32 is matched with the pressing planes at the bottoms of the two ends of the adjusting seat 20, the supporting inclined plane 32 is used for supporting the adjusting block 20, meanwhile, the two ends of the adjusting seat 20 are tensioned and fixed on the base 10 from top to bottom by using the two tensioning pieces, so that the adjusting seat 20 and the base 10 are kept fixed, and finally, the workpiece 90 is clamped by the clamping block 44, so that the workpiece 90 is kept fixed. Compared with the existing clamp, when the clamp is used for clamping a workpiece, the angle of the adjusting seat is adjustable, so that the clamp can clamp the workpiece according to different angles, the clamping requirements of different workpieces are met, the application range of the clamp is enlarged, only the angle of the adjusting seat needs to be changed through the adjusting screw, multiple sets of tools are not needed, the tools do not need to be frequently replaced, the equipment cost is reduced, and meanwhile, the machining efficiency of the workpiece is improved.

In a preferred embodiment, two ends of the adjusting seat 20 respectively extend outward to form an extension arm 22, and the lower surfaces of the two extension arms 22 respectively form the two pressing surfaces. The tensioning piece is a tensioning bolt 23 which is connected on the extension arm 22 in a penetrating way; two mounting grooves 12 with downward openings are arranged on a base 10, a spherical shell is formed on the top wall of the mounting groove 12, meanwhile, a ball head 11 is respectively arranged in the two mounting grooves 12, the ball head 11 is in universal fit with the spherical shell, a threaded hole is arranged on the ball head 11, the diameter of the threaded hole is consistent with the outer diameter of a tension bolt 23, meanwhile, a through hole extending to the upper surface of the base 10 is arranged on the top wall of the mounting groove 12, the two tension bolts 23 respectively extend downwards and penetrate into the mounting groove 12 through the through hole, and the part of the tension bolt 23 penetrating into the mounting groove 12 is screwed in the threaded hole of the ball head 11, namely, the two tension bolts 23 are respectively screwed on the two ball heads 11 which can rotate universally after extending downwards, the nut of the tension bolt 23 is hung on an extension arm 22, after the lower end part of the tension bolt is screwed on the ball head 11 downwards, the support block 22 can be tensioned downwards so that a compression surface extends downwards to support an inclined plane 32 on a supporting block 30, in this manner, the extension arm 22, support block 30 and base 10 are securely held. For convenience of processing and installation, the present invention fixes a top plate 15 on the top of the base 10, and the installation groove 12 is opened on the lower surface of the top plate 15.

In another preferred embodiment, the clamping assembly of the present invention comprises two swing arms 41 oppositely disposed, and a driving member, wherein the middle portion of the swing arm 41 is hinged to the base 10, specifically, the middle portion of the swing arm 41 is mounted on the base 10 through a rotating shaft 411, the extending direction of the rotating shaft 411 is the same as the direction X in the figure, that is, the swing arm 41 can swing on both sides of the adjusting seat 20, two clamping blocks 44 are respectively fixed on the top portions of the two swing arms 41, when the swing arm 41 swings, the clamping block 44 at the top portion 44 can approach the adjusting seat 20 or move away from the adjusting seat 20 along the direction Y, when the clamping block moves to the extreme position near the adjusting seat 20, the clamping block 44 presses the outer surface of the workpiece 90, so that the workpiece 90 is clamped from both sides of the workpiece 90 by the two clamping blocks 44, the driving member is used for pushing the bottom portions of the two swing arms 41 to move towards the directions away from each other synchronously, i.e., toward the outside of the base 10 in the Y direction, and the clamping blocks 44 at the top of the two swing arms 41 are simultaneously moved toward the inside to clamp the workpiece 90 according to the lever separation. The driving part comprises a jacking block 45 and an oil cylinder 46, wherein the jacking block 45 is slidably mounted on the base 10 and can move along the length direction of the base 10, a cylinder body of the oil cylinder 46 is fixed on the base 10, a telescopic rod is connected to the outer side of the jacking block 45, the oil cylinder 46 can drive the jacking block 45 to reciprocate along the length direction of the base 10, two sides of the jacking block 45 respectively form a jacking inclined surface 451, the bottoms of two swing arms 41 are respectively abutted against the two jacking inclined surfaces 451, the two jacking inclined surfaces 451 enable the jacking block 45 to form a structure with a narrow inner side and a wide outer side, when the oil cylinder 46 drives the jacking block 45 to move towards the middle part of the length direction of the base 10, the two jacking inclined surfaces 451 respectively abut against the bottoms of the swing arms 41, the bottoms of the two swing arms 41 simultaneously move towards the outer side of the width direction of the base 10, and then the clamping block 44 at the tops of the swing arms 41 simultaneously moves towards the inner side of the width direction of the base 10. Of course, in other embodiments, the two pushing slopes 451 may be formed by forming the top block 45 into a configuration with a wide inner side and a narrow outer side, so that the top block 45 can push the bottoms of the two swing arms 41 to the outer side when the oil cylinder 46 pulls the top block 45 to the outer side of the length direction of the base 10. In order to reduce friction, a roller 42 may be disposed at the bottom of the swing arm 41, and the roller 42 is pressed against the pushing slope 451. In addition, an elastic member is further installed on the base 10, the elastic member is used for pushing the bottom of the swing arm 41 towards the direction close to the top block 45, an elastic stress towards the inner side is always applied to the bottom of the swing arm 41, when the workpiece 90 is clamped, the position where the width of the top block 45 is the smallest is located between the bottoms of the two swing arms 41, and the two clamping blocks 44 at the top of the swing arm 41 are in an open state by using the elastic member at the outer side of the bottom of the swing arm 41, so that the workpiece 90 is placed on the adjusting seat 20, and meanwhile, when the angle of the adjusting seat 20 is changed through the adjusting screw 31, resistance from the clamping blocks 44 is received. Specifically, the elastic element comprises a top pin 14 movably mounted on the base 10 and a spring 13, the spring 13 is used for pushing the top pin 14 towards the swing arm 41, so that the top pin 14 is always pressed on the outer side of the bottom of the swing arm 41, and when the oil cylinder 46 drives the top block 45 to push the bottom of the swing arm 41 outwards, the spring 13 is compressed and contracted.

In order to make the clamping of the workpiece 90 more firm, the workpiece fixture of the present invention includes two clamping assemblies, the two clamping assemblies are arranged along the length direction of the base 10, and the two clamping assemblies are respectively located at two sides of the rotating shaft 21, so that the workpiece 90 can be respectively clamped at two ends of the workpiece 90, of course, in other embodiments, if the length dimension of the workpiece 90 is larger, three or more clamping assemblies may be arranged along the length direction of the base 10.

According to the utility model, the clamping block 44 is provided with a plurality of convex teeth, and when the clamping block 44 clamps the workpiece 90, the plurality of convex teeth are contacted with the surface of the workpiece 90, so that the workpiece 90 can be clamped more firmly. In addition, the top of the swing arm 41 is also provided with an installation seat 43, the clamping block 44 is detachably fixed on the installation seat 43 through bolts, and the clamping block 44 can be replaced after being worn for a long time. The mount pad 43 is located the top inboard of swing arm 41, the lateral surface of mount pad 43 and the medial surface laminating of swing arm 41, and, be provided with a plurality of first dogtooths of arranging along the direction of height on the lateral surface of mount pad 43, be provided with a plurality of second dogtooths of arranging along the direction of height on the medial surface of swing arm 41, a plurality of first dogtooths and a plurality of second dogtooth interlock, and mount pad 43 and swing arm 41 pass through bolt fixed connection together, after loosening the bolt, can reciprocate mount pad 43, first dogtooth and the second dogtooth interlock of co-altitude not, the bolt of screwing again, can adjust the height of mount pad 43, then adjust the height of clamp splice 44, when pressing from both sides tightly to the work piece of equidimension, through the height of adjustment clamp splice 44, in order to adapt to the overall dimension of work piece, make clamp splice 44 can be better exert the clamp force to the work piece.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims

1. A workpiece clamp is characterized by comprising a base, an adjusting seat for bearing a workpiece, a supporting assembly and a clamping assembly;

2. The workholding apparatus of claim 1 wherein the ends of the adjustment block each extend outwardly to form an extension arm and the clamping surface is located on the lower surface of the extension arm.

3. The workpiece holder of claim 2, wherein the tension member is a tension bolt extending through the extension arm; be provided with two mounting grooves that open side down on the base, the roof of two mounting grooves all forms a spherical shell, all be provided with one in two mounting grooves with the universal complex bulb of spherical shell, set up threaded hole on the bulb, be provided with the through-hole that extends to the base upper surface on the roof of two mounting grooves, two tie bolts penetrate the through-hole respectively from top to bottom and in the screw hole of two bulbs of difference spiro union.

4. The workpiece holder of claim 3, wherein a top plate is fixed to the top of the base, and the mounting groove is formed in a lower surface of the top plate.

5. The workpiece holder of claim 1, wherein the clamping assembly comprises two oppositely disposed swing arms, the middle portions of the swing arms being hinged to the base, and two clamping blocks respectively located at the top portions of the swing arms, and a driving member for pushing the bottom portions of the swing arms to move the bottom portions of the swing arms synchronously in directions away from each other.

6. The workpiece holder of claim 5, wherein the driving member includes a top block slidably mounted on the base, and an oil cylinder for driving the top block to move along the length of the base, wherein two sides of the top block respectively form a pushing slope, and the bottom of the swing arms respectively abut against the outer sides of the two pushing slopes.

7. The workholding apparatus of claim 6 wherein the bottom of the swing arm is pivotally mounted on rollers which ride on the ejection ramps.

8. The workpiece holder of claim 6, wherein the base is provided with an elastic member for urging the bottom of the swing arm in a direction close to the top block.

9. The workpiece holder of claim 5, wherein the workpiece holder comprises two clamping assemblies, the two clamping assemblies being arranged along the length of the base, and the two clamping assemblies being located on opposite sides of the adjustment block relative to the axis of rotation of the base.

10. The workpiece holder of claim 5, wherein the clamping block is provided with a plurality of teeth for pressing against the outer surface of the workpiece when the clamping block presses against the workpiece, the swing arm is provided with a mounting seat on the inner side of the top portion thereof, the clamping block is detachably fixed to the mounting seat, the mounting seat is provided with a plurality of first teeth arranged in the height direction, the swing arm is provided with a plurality of second teeth arranged in the height direction, the first teeth and the second teeth are engaged with each other, and the mounting seat and the swing arm are fixedly connected together by bolts.