Eccentric special-shaped numerical control clamping device

Abstract

The utility model provides an eccentric special-shaped numerical control clamping device which comprises a clamping block and four deformable movable chucks located at the head of the clamping block, special-shaped grooves are formed in the heads of the movable chucks, and ejector rods are arranged in the clamping block and the movable chucks. The special-shaped eccentric workpiece is placed in the special-shaped groove, then the pneumatic telescopic rod is started, the pneumatic telescopic rod can drive the clamping block to contract, the movable chuck clamps the workpiece, the inner side of the workpiece is attached to the head of the ejector rod, air in the air tightness detection hole in the ejector rod is pumped out, and the ejector rod abuts against the workpiece. The special-shaped cavity is machined in the clamp, the contact area of a product in the clamp is increased, meanwhile, the center of the shape, needing to be machined, of the product is adjusted to the rotation center of the clamp, a workpiece can be machined conveniently, the clamping force is increased, and the stability of workpiece positioning is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control processing, in particular to an eccentric anisotropic numerical control clamping device. Background Art

[0002] The CNC clamping device is a device used to clamp and position the workpiece. When the CNC clamping device is used, the workpiece is placed in the middle of the chuck, and then the CNC clamping device is started so that the clamping device clamps and fixes the workpiece.

[0003] When turning special-shaped parts, it is difficult for ordinary chucks to stably fix the parts, which will cause the parts to fly out easily during processing and it is difficult to ensure the stability of the size. Therefore, this solution sets up a clamping device that can perform airtightness detection on eccentric and irregular workpieces. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an eccentric special-shaped CNC clamping device to solve the problem in the prior art that when turning special-shaped parts, ordinary chucks are difficult to stably fix the parts, which will cause the parts to fly out easily during processing and it is difficult to ensure the stability of the size.

[0005] An eccentric anisotropic CNC clamping device comprises a clamping block and four deformable movable clamps located at the head of the clamping block. The heads of the movable clamps are provided with anisotropic grooves. Push rods are arranged inside the clamping block and the movable clamps.

[0006] Preferably, the four movable chucks form a circular structure, and the heads of the four movable chucks form a special groove for placing the workpiece.

[0007] Preferably, a pneumatic telescopic rod is installed at the tail end of the clamping block.

[0008] Preferably, air tightness detection holes are opened inside the push rod, and the air tightness detection holes are distributed in a circular array on the push rod.

[0009] Preferably, the surfaces of the clamping block and the movable clamping head are sleeved with a shell, and the clamping block and the movable clamping head can be telescopically movable within the shell.

[0010] Compared with the prior art, the present invention has the following beneficial effects: the present invention places the eccentric workpiece of different shapes inside the eccentric groove, and then starts the pneumatic telescopic rod, which drives the clamping block to contract, so that the movable chuck clamps the workpiece, and the inner side of the workpiece fits against the head of the push rod. At the same time, the air in the air tightness detection hole in the push rod is evacuated, and the push rod supports the workpiece. The present invention increases the contact area of ​​the product in the clamp by machining a special-shaped cavity on the clamp, and at the same time adjusts the shape center of the product to be machined to the rotation center of the clamp, which facilitates the machining of the workpiece, increases the holding force and improves the stability of the workpiece positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the utility model from a top view;

[0013] Figure 3 This is a side view structural diagram of the clamping block of the utility model;

[0014] Figure 4 It is a schematic diagram of the separation structure of the clamping block and the shell of the utility model.

[0015] In the figure: 1. Clamping block; 2. Movable chuck; 3. Anisotropic groove; 4. Ejector rod; 5. Air tightness detection hole; 6. Casing. DETAILED DESCRIPTION

[0016] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] like Figure 1-4 As shown, the utility model provides an eccentric anisotropic CNC clamping device, comprising a clamping block 1 and four deformable movable chucks 2 located at the head of the clamping block 1, the head of the movable chuck 2 is provided with anisotropic grooves 3, and a push rod 4 is provided inside the clamping block 1 and the movable chuck 2.

[0018] The four movable chucks 2 form a circular structure, and the heads of the four movable chucks 2 form an anisotropic groove 3 for placing the workpiece. When the four movable chucks 2 are contracted, the anisotropic groove 3 on the heads of the movable chucks 2 can be used to clamp and position the workpiece.

[0019] A pneumatic telescopic rod is installed at the tail end of the clamping block 1. When the pneumatic telescopic rod is started, the pneumatic telescopic rod can drive the clamping block 1 and the movable chuck 2 to telescope, so that the movable chuck 2 is squeezed by the shell 6 to clamp the workpiece.

[0020] An air tightness detection hole 5 is opened inside the push rod 4 and is distributed in a circular array on the push rod 4. When the head of the push rod 4 is in contact with the workpiece, the air tightness detection hole 5 on the head of the push rod 4 can determine the air tightness of the workpiece.

[0021] The surfaces of the clamping block 1 and the movable chuck 2 are sleeved with a shell 6. The clamping block 1 and the movable chuck 2 can be telescopically movable in the shell 6. When the movable chuck 2 contracts to a certain extent, the movable chuck 2 can clamp the workpiece in place.

[0022] Working principle: Place the workpiece inside the anisotropic groove 3 inside the movable chuck 2, then start the pneumatic telescopic rod to drive the clamp 1 to move in the shell 6. As the clamp 1 retracts, the movable chuck 2 will be squeezed by the shell 6, so that the four movable chucks 2 clamp the workpiece. While clamping, one side of the workpiece fits against the head of the push rod 4, and then the air in the air tightness detection hole 5 inside the push rod 4 is discharged. Then the pneumatic telescopic rod slightly pushes the clamp 1. If the air tightness of the workpiece is good at this time, the workpiece will not fall off. If the air tightness of the workpiece is poor at this time, the workpiece will fall off.

[0023] The implementation methods of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An eccentric anisotropic CNC clamping device, comprising a clamping block (1) and four deformable movable clamping heads (2) located at the head of the clamping block (1), characterized in that: A special groove (3) is provided on the head of the movable clamp (2), and a push rod (4) is provided inside the clamping block (1) and the movable clamp (2).

2. The eccentric anisotropic CNC clamping device according to claim 1, characterized in that: The four movable chucks (2) form a circular structure, and the heads of the four movable chucks (2) form a heterogeneous groove (3) for placing a workpiece.

3. The eccentric anisotropic CNC clamping device according to claim 1, characterized in that: A pneumatic telescopic rod is installed at the tail end of the clamping block (1).

4. The eccentric anisotropic CNC clamping device according to claim 1, characterized in that: Air tightness detection holes (5) are provided inside the push rod (4), and the air tightness detection holes (5) are distributed in a circular array on the push rod (4).

5. The eccentric anisotropic CNC clamping device according to claim 1, characterized in that: The surfaces of the clamping block (1) and the movable clamping head (2) are sleeved with a shell (6), and the clamping block (1) and the movable clamping head (2) can be telescopically movable within the shell (6).

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