CN220051494U

CN220051494U - Efficient dysmorphism plate centre gripping frock

Info

Publication number: CN220051494U
Application number: CN202321332075.0U
Authority: CN
Inventors: 段现银; 吴天格; 潘远君; 林海南
Original assignee: Luzhou Hanfei Aerospace Technology Development Co ltd
Current assignee: Luzhou Hanfei Aerospace Technology Development Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-11-21
Anticipated expiration: 2033-05-29

Abstract

The utility model relates to a clamp and provides a high-efficiency special-shaped plate clamping tool which comprises a base for placing a workpiece, a plurality of sliding rails arranged on the side edges of the base and a plurality of clamps; the fixture comprises a sliding block which is in sliding connection with the sliding rail, a driving device which is used for driving the sliding block to move along the length direction of the sliding rail, a clamping block which is arranged at the upper end of the sliding block, a clamping groove which is arranged on one side of the clamping block close to the base, a rubber sheet which is arranged in the clamping groove, and a telescopic mechanism which is used for supporting the rubber sheet. The efficient special-shaped plate clamping tool can efficiently clamp the plate-shaped workpiece with the special-shaped structure.

Description

Efficient dysmorphism plate centre gripping frock

Technical Field

The utility model relates to the technical field of clamps, in particular to a high-efficiency special-shaped plate clamping tool.

Background

The fixture is used to fix the machining object in the correct position during the machining process to accept the construction or detection. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in the process may be referred to as a fixture.

Most of precision machining of precision workpieces is not performed by clamping and positioning the workpieces by using a clamp, and then performing a manual or automatic machining process on the workpieces. For a workpiece with regular appearance (such as standard square, round, etc.), the workpiece can be clamped correctly and stably by using a conventional clamp. However, for the plate-shaped member with irregular shape, the side edges of the plate-shaped member may be arc-shaped surfaces and flat surfaces are mixed, so that the plate-shaped member may be difficult to fix and stabilize by using a conventional clamp, a worker manually uses a plurality of clamps to manually fix a plurality of edges of a workpiece on an operation table, and the clamp is loosened after the workpiece is machined, so that the workpiece is taken down, but the time and the labor are wasted, the clamping force of the clamps is difficult to standardize, the clamping is likely to be unstable, the workpiece is displaced during machining, or the clamping is too tight, and the workpiece is slightly deformed due to the effect of the clamp, so that the workpiece is damaged.

Disclosure of Invention

The utility model aims to provide a high-efficiency special-shaped plate clamping tool which can efficiently clamp a plate-shaped workpiece with a special-shaped structure.

The embodiment of the utility model is realized by the following technical scheme: the utility model relates to a high-efficiency special-shaped plate clamping tool which comprises a base for placing a workpiece, a plurality of sliding rails arranged on the side edges of the base and a plurality of clamps; the fixture comprises a sliding block, a driving device, a clamping block, a clamping groove, a rubber sheet and a telescopic mechanism, wherein the sliding block is in sliding connection with the sliding rail, the driving device is used for driving the sliding block to move along the length direction of the sliding rail, the clamping block is arranged at the upper end of the sliding block, the clamping groove is formed in the side, close to the base, of the clamping block, the rubber sheet is arranged in the clamping groove, and the telescopic mechanism is used for supporting the rubber sheet.

Further, the telescopic mechanism comprises an oil storage cavity which is arranged in the clamping block and is used for communicating the oil storage cavity with a sliding hole of the clamping groove, an ejector rod which is arranged in the sliding hole in a sliding manner, and an oil pipe which is communicated with the oil storage cavity; the oil pipe is connected with a hydraulic pump; one end of the ejector rod, which is far away from the oil storage cavity, is abutted with the rubber sheet.

Further, the sliding holes are provided with a plurality of pieces, and the sliding holes are all connected with the oil storage cavity in a conducting way; the sliding holes are distributed along the horizontal direction; one of the sliding holes is provided with one of the ejector rods in a sliding way.

Further, the telescopic mechanism further comprises a roller arranged at one end of the ejector rod close to the rubber sheet, and the axis of the roller is arranged vertically.

Further, the roller is rotatably connected with the ejector rod.

Further, friction strips are densely distributed on the outer wall of the roller along the vertical direction.

Further, the rubber sheet is of a U-shaped structure, and the opening side of the rubber sheet faces the clamping block; elastic ropes are connected to two ends of the rubber sheet.

Further, a plurality of the oil pipes are connected with the same hydraulic pump.

Further, the driving device comprises an electric telescopic cylinder, and a telescopic rod of the electric telescopic cylinder is connected with the sliding block.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects: according to the efficient special-shaped plate clamping tool, the plate-shaped workpiece with the irregular structure is directly placed on the base when the fixture is used, then the driving device is used for driving the sliding block on the side edge of the base to be close to the workpiece, the sliding block stops moving when contacting the workpiece, and at the moment, the telescopic mechanism in the clamping groove is used for pushing the rubber sheet, so that the rubber sheet is close to the side edge of the workpiece and props against the workpiece. The rubber sheets are uniformly distributed on the side edges of the workpiece so as to stably clamp the workpiece, the subsequent processing operation on the workpiece is facilitated, and the rubber sheets are pushed/pulled by using the independent telescopic mechanism, so that the rubber sheets can better contact with the irregular side edges of the workpiece, the contact area between the rubber sheets and the side edges of the workpiece is increased, the friction force is increased, and the damage to the workpiece is reduced. And the whole clamping process can be standardized, the clamping force of the clamp on the workpiece is controllable, and the workpiece can be better protected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a high-efficiency special-shaped plate clamping tool according to an embodiment of the utility model;

FIG. 2 is a schematic view of the structure of the inside of a clamping block according to an embodiment of the present utility model;

fig. 3 is a partially expanded schematic structural view of a clamping block according to an embodiment of the present utility model.

Icon: 10-base, 11-slide rail, 21-slider, 22-clamp block, 23-clamp groove, 24-oil storage cavity, 25-slide hole, 26-rubber sheet, 27-ejector pin, 28-roller, 29-oil pipe, 210-elastic rope, 211-electric telescopic cylinder.

Detailed Description

Examples

The following further describes a specific embodiment, as shown in fig. 1-3, the efficient fixture for clamping a special-shaped plate in this embodiment includes a base 10 for placing a workpiece, a plurality of slide rails 11 disposed on the side of the base 10, and a plurality of clamps; the fixture comprises a sliding block 21 which is in sliding connection with the sliding rail 11, a driving device for driving the sliding block 21 to move along the length direction of the sliding rail 11, a clamping block 22 arranged at the upper end of the sliding block 21, a clamping groove 23 arranged on one side of the clamping block 22 close to the base 10, a rubber sheet 26 arranged in the clamping groove 23, and a telescopic mechanism for supporting the rubber sheet 26. Specifically, when in use, the plate-shaped workpiece with an irregular structure is directly placed on the base 10, then the driving device is used for driving the sliding block 21 at the side edge of the base 10 to approach the workpiece, and when the sliding block 21 contacts the workpiece, the movement is stopped, and at the moment, the telescopic mechanism in the clamping groove 23 is used for pushing the rubber sheet 26, so that the rubber sheet 26 approaches the side edge of the workpiece and abuts against the workpiece. The rubber sheets 26 are uniformly distributed on the side edges of the workpiece so as to clamp the workpiece stably, the workpiece is convenient to be machined and operated subsequently, and the rubber sheets 26 are pushed/pulled by using the independent telescopic mechanism, so that the rubber sheets 26 can be better contacted with the irregular side edges of the workpiece, the contact area between the rubber sheets 26 and the side edges of the workpiece is increased, the friction force is increased, and the damage to the workpiece is reduced. And the whole clamping process can be standardized, the clamping force of the clamp on the workpiece is controllable, and the workpiece can be better protected.

The telescopic mechanism in this embodiment includes an oil storage cavity 24 arranged in the clamp block 22, a sliding hole 25 for communicating the oil storage cavity 24 with the clamp groove 23, a push rod 27 slidably arranged in the sliding hole 25, and an oil pipe 29 communicated with the oil storage cavity 24; the oil pipe 29 is connected with a hydraulic pump; one end of the ejector rod 27, which is far away from the oil storage cavity 24, is abutted against the rubber sheet 26. Specifically, the hydraulic pump injects hydraulic oil into the oil storage cavity 24 through the oil pipe 29, and then the pressure is applied to the ejector rod 27 through the sliding hole 25, and the ejector rod 27 further pushes the rubber sheet 26, so that the rubber sheet 26 abuts against the side edge of the workpiece, and the purpose of clamping and fixing the workpiece is achieved.

The sliding holes 25 in the embodiment are provided with a plurality of sliding holes 25, and the sliding holes 25 are all connected with the oil storage cavity 24 in a conducting way; the plurality of slide holes 25 are distributed in the horizontal direction; a push rod 27 is slidably provided in a slide hole 25. Specifically, the plurality of ejector rods 27 are independently moved, that is to say, the length of the ejector rods 27 extending out of the sliding holes 25 can be automatically adjusted according to the shape of the workpiece, so that the arc-shaped surface of the outer wall of the workpiece can be better attached, the acting area of the rubber sheet 26 on the workpiece is obviously improved, and the acting force is improved. And since the plurality of slide holes 25 are all connected to the same oil reservoir 24, the pressing force of each jack 27 is the same. Therefore, the same extrusion force applied to the outer wall of the workpiece can be effectively ensured.

The telescopic mechanism in this embodiment further includes a roller 28 disposed at one end of the ejector rod 27 near the rubber sheet 26, and an axis of the roller 28 is disposed vertically. The roller 28 is rotatably connected with the ejector rod 27. Specifically, the roller 28 can increase the acting area between the ejector rod 27 and the rubber sheet 26, so that the rubber sheet 26 is stressed more uniformly and has longer service life, and the roller 28 can roll on the rubber sheet 26, thus effectively avoiding the generation of sliding friction between the ejector rod 27 and the rubber sheet 26.

The outer wall of the roller 28 in this embodiment is densely provided with friction strips in the vertical direction. In particular, this increases the friction between the roller 28 and the rubber sheet 26, avoiding relative sliding between the two.

The rubber sheet in the embodiment is of a U-shaped structure, and the opening side of the rubber sheet is arranged towards the clamping block 22; elastic ropes 210 are connected to both ends of the rubber sheet. Specifically, the rubber sheet 26 can be kept in a straightened state as much as possible. And also facilitates the retraction of the rubber sheet 26. Wherein the elastic cord 210 is connected to the clamp block 22.

The multiple oil pipes 29 in this embodiment are connected to the same hydraulic pump. Specifically, this ensures that the extrusion force of each rubber sheet 26 at each part of the work is the same.

The driving device in this embodiment includes an electric telescopic cylinder 211, and a telescopic rod of the electric telescopic cylinder 211 is connected to a slider 21. In which hydraulic cylinders may be used instead of the electric telescopic cylinders 211.

To sum up, in the efficient fixture for clamping the irregularly-shaped plate in this embodiment, the irregularly-structured plate-shaped workpiece is directly placed on the base 10 during use, then the driving device is used to drive the slider 21 at the side of the base 10 to approach the workpiece, and when the slider 21 contacts the workpiece, the movement is stopped, and at this time, the telescopic mechanism inside the clamping groove 23 is used to push the rubber sheet 26, so that the rubber sheet 26 approaches the side of the workpiece and abuts against the side of the workpiece. The rubber sheets 26 are uniformly distributed on the side edges of the workpiece so as to clamp the workpiece stably, the workpiece is convenient to be machined and operated subsequently, and the rubber sheets 26 are pushed/pulled by using the independent telescopic mechanism, so that the rubber sheets 26 can be better contacted with the irregular side edges of the workpiece, the contact area between the rubber sheets 26 and the side edges of the workpiece is increased, the friction force is increased, and the damage to the workpiece is reduced. And the whole clamping process can be standardized, the clamping force of the clamp on the workpiece is controllable, and the workpiece can be better protected.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Efficient dysmorphism plate centre gripping frock, its characterized in that: the fixture comprises a base (10) for placing workpieces, a plurality of sliding rails (11) arranged on the side edges of the base (10), and a plurality of fixtures;

the fixture comprises a sliding block (21) which is in sliding connection with the sliding rail (11), a driving device which is used for driving the sliding block (21) to move along the length direction of the sliding rail (11), a clamping block (22) which is arranged at the upper end of the sliding block (21), a clamping groove (23) which is arranged on one side of the clamping block (22) close to the base (10), a rubber sheet (26) which is arranged in the clamping groove (23), and a telescopic mechanism which is used for supporting the rubber sheet (26).

2. The efficient profiled plate clamping tooling of claim 1 wherein: the telescopic mechanism comprises an oil storage cavity (24) which is arranged in the clamping block (22), a sliding hole (25) which is used for communicating the oil storage cavity (24) with the clamping groove (23), a push rod (27) which is arranged in the sliding hole (25) in a sliding way, and an oil pipe (29) which is communicated with the oil storage cavity (24); the oil pipe (29) is connected with a hydraulic pump;

one end of the ejector rod (27) far away from the oil storage cavity (24) is abutted with the rubber sheet (26).

3. The efficient profiled plate clamping tooling of claim 2 wherein: the sliding holes (25) are provided with a plurality of pieces, and the sliding holes (25) are all connected with the oil storage cavity (24) in a conducting way; a plurality of sliding holes (25) are distributed along the horizontal direction; one of the sliding holes (25) is internally provided with one ejector rod (27).

4. The efficient profiled plate clamping tooling of claim 2 wherein: the telescopic mechanism further comprises a roller (28) arranged at one end of the ejector rod (27) close to the rubber sheet (26), and the axis of the roller (28) is arranged vertically.

5. The efficient profiled plate clamping tooling of claim 4 wherein: the roller (28) is rotationally connected with the ejector rod (27).

6. The efficient profiled plate clamping tooling of claim 5 wherein: the outer wall of the roller (28) is densely provided with friction strips along the vertical direction.

7. The efficient profiled plate clamping tooling of claim 1 wherein: the rubber sheet is of a U-shaped structure, and the opening side of the rubber sheet faces the clamping block (22); elastic ropes (210) are connected to two ends of the rubber sheet.

8. The efficient profiled plate clamping tooling of claim 2 wherein: a plurality of oil pipes (29) are connected with the same hydraulic pump.

9. The efficient profiled plate clamping tooling of claim 1 wherein: the driving device comprises an electric telescopic cylinder (211), and a telescopic rod of the electric telescopic cylinder (211) is connected with the sliding block (21).