Clamping and positioning tool

Abstract

The clamping and positioning tool comprises a base, a positioning block is fixedly arranged on the base, a first pressing piece is installed above the front end of the positioning block, a second pressing piece is installed below the rear end of the positioning block, the first pressing piece comprises a first air cylinder and a first pressing block, the first air cylinder is fixed above the positioning block, and the second pressing block is fixed above the first air cylinder. The first pressing block is connected to the upper portion of the first air cylinder in a driving mode, a first pressing strip extends from the first pressing block in the direction of the positioning block, and the first pressing strip is pressed on the workpiece and moves in the Z-axis direction; the second pressing piece comprises a second air cylinder, a driving shaft and a second pressing block, the second air cylinder is fixed to the base and located below the positioning block, one end of the driving shaft is installed with the second air cylinder in a driving mode, the other end of the driving shaft is detachably connected with the second pressing block, the second pressing block is pressed on the outer side of the workpiece and installed with the driving shaft through a screw, and the second pressing block moves in the Y-axis direction. The clamping and positioning tool has the clamping capacity in multiple directions, so that the workpiece has good stability in the machining process.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning and clamping, in particular to a clamping and positioning tool. Background Art

[0002] When the workpiece is processed on a CNC machine tool, it needs to be clamped with a positioning clamping device. Figure 1 When the workpiece (6) of the connecting arm on the pan-tilt device shown in the figure is milled on its outer end surface, since the connecting arm is a long curved structure, a specific positioning fixture needs to be designed to assist in its processing to ensure the stability of the workpiece processing. Utility Model Content

[0003] The utility model aims to provide a clamping and positioning tool to solve the technical problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0005] A clamping and positioning tool comprises a base, a positioning block is fixed on the base, a first clamping piece is installed above the front end of the positioning block, and a second clamping piece is installed below the rear end of the positioning block, the first clamping piece comprises a first cylinder and a first clamping block, the first cylinder is fixed above the positioning block, the first clamping block is driven and connected above the first cylinder, a first pressure strip extends on the first pressure block in the direction of the positioning block, the first pressure strip is pressed on the workpiece, and the first pressure strip moves along the Z-axis direction; the second clamping piece comprises a second cylinder, a driving shaft and a second pressure block, the second cylinder is fixed on the base and below the positioning block, one end of the driving shaft is driven and installed with the second cylinder, and the other end thereof is detachably connected to the second pressure block, the second pressure block is pressed on the outer side of the workpiece and installed with the driving shaft by screws, and the second pressure block moves along the Y-axis direction.

[0006] A raised first limiting block is provided above the positioning block, a second limiting block detachably mounted to the positioning block is provided on the left side of the first limiting block, and a first limiting groove is formed between the first limiting block and the second limiting block for placing a workpiece.

[0007] A third limit block and a fourth limit block are protruded in the vertical direction at the rear end of the positioning block, a second limit groove formed by the spacing between the third limit block and the fourth limit block is connected to the first limit groove, and the third limit block and the fourth limit block are above the driving shaft.

[0008] A detachable positioning round table is installed below the rear end of the positioning block and plugged into the workpiece. A mounting through hole is provided at the axis center of the positioning round table, and the driving shaft is in the mounting through hole.

[0009] The second pressure block is a disc structure, and the second pressure block includes a first chuck and a support block. The support block is coaxially arranged with the first chuck, and the first chuck is in contact and pressed with the workpiece. A first locking hole is provided on the support block, and a second locking hole is provided on the first chuck, which is connected to the first locking hole and is used for installing screws and fixing to the drive shaft.

[0010] Compared with the prior art, the clamping and positioning tool of the present application has a simple structure and is quick to install. The first limit groove, the second limit groove and the positioning table limit the placement position of the workpiece to achieve rapid positioning and installation. The workpiece is clamped and positioned by arranging clamping parts in two directions of the positioning block, and clamping force is provided in both the horizontal and vertical directions of the workpiece for clamping and positioning. The clamping and positioning tool of the present application has clamping capabilities in multiple directions, so that the workpiece has good stability during machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : A three-dimensional image of a workpiece clamped using this application;

[0012] Figure 2 : A three-dimensional view of a workpiece clamped by the present application from another direction;

[0013] Figure 3 : A schematic diagram of the three-dimensional structure of the present application;

[0014] Figure 4 : Right view of this application;

[0015] Figure 5 : A three-dimensional structural diagram of the second pressing block;

[0016] Figure 6 : The workpiece mounting platform and the second pressing block mounting structure diagram;

[0017] Figure 7 : Schematic diagram of the use effect of this application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Specific embodiment 1: Please refer to Figure 1 and Figure 2In the embodiment of the utility model, the workpiece 6 to be processed is an L-shaped curved structure, a slot 601 with an opening structure is provided on the top of the workpiece 6, a mounting platform 602 with a circular structure is provided on the lower side of the workpiece 6, a concave receiving groove 602-1 is provided on the front side of the mounting platform 602, a positioning through hole 602-2 is provided in the receiving groove 602-1 and passes through the front and rear ends of the mounting platform 602, a concave clamping groove 602-3 is provided on the rear side of the mounting platform 602, and a step portion 602-4 is provided in the clamping groove 602-3. In the present application, a clamping and positioning tooling for clamping the workpiece 6 is provided, please refer to Figures 3 to 7 The present application includes a base 1, a positioning block 2 is fixed on the base 1, a first pressing member 3 is installed above the front end of the positioning block 2, a second pressing member 4 is installed below the rear end of the positioning block 2, the first pressing member 3 includes a first cylinder 301 and a first pressing block 302, the first cylinder 301 is fixed above the positioning block 2, the first pressing block 302 is driven and connected above the first cylinder 301, a first pressing strip 303 is extended from the first pressing block 302 toward the positioning block 2, and the first pressing strip 303 is pressed on the workpiece 6, the first pressure strip 303 moves along the Z-axis direction; the second clamping member 4 includes a second cylinder 401, a driving shaft 402 and a second pressure block 403, the second cylinder 401 is fixed on the base 1 and below the positioning block 2, one end of the driving shaft 402 is driven and installed with the second cylinder 401, and the other end thereof is detachably connected with the second pressure block 403, the second pressure block 403 is pressed on the outer side of the workpiece 6 and is installed with the driving shaft 402 by screws 404, and the second pressure block 403 moves along the Y-axis direction.

[0020] A raised first limit block 201 is provided above the positioning block 2, and a second limit block 202 detachably mounted with the positioning block 2 is provided on the left side of the first limit block 201. The distance between the first limit block 201 and the second limit block 202 forms a first limit groove for placing the workpiece 6.

[0021] A third limit block 203 and a fourth limit block 204 are protruded in the vertical direction at the rear end of the positioning block 2. The second limit groove formed by the distance between the third limit block 203 and the fourth limit block 204 is connected to the first limit groove. The third limit block 203 and the fourth limit block 204 are above the driving shaft 402. The first limit groove and the second limit groove form a shape trajectory that matches the outer shape structure of the workpiece 6.

[0022] A detachable positioning round table 5 is installed below the rear end of the positioning block 2 and plugged into the workpiece 6. The positioning round table 5 is fixedly connected to the positioning block 2 by screws. The positioning round tables 5 of different sizes can be replaced according to different models of products. A mounting through hole 501 is provided at the axis of the positioning round table 5, and the drive shaft 402 is in the mounting through hole 501. The second pressing block 403 is a disc structure. The second pressing block 403 includes a first chuck 403-1 and a support block 403-2. The support block 403-2 is coaxially arranged with the first chuck 403-1. The first chuck 403-1 is in contact with the workpiece 6. The support block 403-2 is provided with a first locking hole. The first chuck 403-1 is provided with a second locking hole that communicates with the first locking hole for mounting screws 404 and fixing the drive shaft 402.

[0023] When installing the workpiece 6, the workpiece 6 is placed along the track formed by the first limit groove and the second limit groove, and the positioning table 5 is inserted into the corresponding accommodating groove 602-1. The first cylinder 301 drives the first pressure strip 303 to move downward and press it into the slot 601 of the workpiece 6. The driving shaft 402 passes through the positioning through hole 602-2, and the second pressure block 403 is in the clamping groove 602-3 and abuts against the step portion 602-4. The second pressure block 403 is tightly fitted and pressed into the clamping groove 602-3 by the drive of the second cylinder 401, and the mounting table 602 of the workpiece 6 is clamped between the positioning table 5 and the second pressure block 403.

[0024] Compared with the prior art, the clamping and positioning tool of the present application has a simple structure and is quick to install. The first limit groove, the second limit groove and the positioning table limit the placement position of the workpiece to achieve rapid positioning and installation. The workpiece is clamped and positioned by arranging clamping parts in two directions of the positioning block, and clamping force is provided in both the horizontal and vertical directions of the workpiece for clamping and positioning. The clamping and positioning tool of the present application has clamping capabilities in multiple directions, so that the workpiece has good stability during machining.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A clamping and positioning tool, characterized in that: It includes a base, a positioning block is fixed on the base, a first clamping piece is installed above the front end of the positioning block, and a second clamping piece is installed below the rear end of the positioning block, the first clamping piece includes a first cylinder and a first clamping block, the first cylinder is fixed above the positioning block, the first clamping block is driven and connected above the first cylinder, a first pressure strip extends on the first pressure block in the direction of the positioning block, the first pressure strip is pressed on the workpiece, and the first pressure strip moves along the Z-axis direction; the second clamping piece includes a second cylinder, a driving shaft and a second pressure block, the second cylinder is fixed on the base and below the positioning block, one end of the driving shaft is driven and installed with the second cylinder, and the other end thereof is detachably connected to the second pressure block, the second pressure block is pressed on the outer side of the workpiece and installed with the driving shaft by screws, and the second pressure block moves along the Y-axis direction.

2. A clamping and positioning tool according to claim 1, characterized in that: A raised first limiting block is provided above the positioning block, a second limiting block detachably mounted to the positioning block is provided on the left side of the first limiting block, and a first limiting groove is formed between the first limiting block and the second limiting block for placing a workpiece.

3. A clamping and positioning tool according to claim 2, characterized in that: A third limit block and a fourth limit block are protruded in the vertical direction at the rear end of the positioning block, a second limit groove formed by the spacing between the third limit block and the fourth limit block is connected to the first limit groove, and the third limit block and the fourth limit block are above the driving shaft.

4. The clamping and positioning tool according to claim 3, characterized in that: A detachable positioning round table is installed below the rear end of the positioning block and plugged into the workpiece. A mounting through hole is provided at the axis center of the positioning round table, and the driving shaft is in the mounting through hole.

5. The clamping and positioning tool according to claim 4, characterized in that: The second pressure block is a disc structure, and the second pressure block includes a first chuck and a support block. The support block is coaxially arranged with the first chuck, and the first chuck is in contact and pressed with the workpiece. A first locking hole is provided on the support block, and a second locking hole is provided on the first chuck, which is connected to the first locking hole and is used for installing screws and fixing to the drive shaft.

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