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Fixture positioned by the machined surface itself of the workpiece and operation method thereof

A technology for processing surfaces and workpieces, which is applied in the field of fixtures using the workpiece processing surface itself for positioning, can solve problems such as inability to obtain geometric tolerances, assembly accuracy, and low efficiency, and achieve the effects of convenient positioning, accurate position, and guaranteed position accuracy.

Inactive Publication Date: 2010-03-24
THIXOMAG TECHNOLOGH WUHU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a processing method has low efficiency and cannot obtain high-precision shape tolerance and assembly accuracy

Method used

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  • Fixture positioned by the machined surface itself of the workpiece and operation method thereof
  • Fixture positioned by the machined surface itself of the workpiece and operation method thereof
  • Fixture positioned by the machined surface itself of the workpiece and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] On the profile 2 of the workpiece 18 described in the present invention, the side rough positioning surface 1 is established; at the corresponding position on the described clamp, a rough positioning rod 16 is established to contact it, and the described coarse positioning rod 16 is formed by a positioning rod seat 17 Fixed, the positioning rod seat 17 is fixed on the clamp base 11.

[0028] Coarse positioning is completed through the initial cooperation of the fixed bolt 9 and the rough positioning rod 16 in the center. There are generally two coarse positioning rods 16 .

Embodiment 2

[0030] On the profile 2 of the workpiece 18 described in the present invention, a side fine positioning surface 8 is established; at the corresponding position on the described clamp, a pneumatic positioning plate 10 is established, and when performing fine positioning, the pneumatic positioning plate 10 and The side fine positioning surface 8 is in contact.

[0031] Then utilize the pneumatic device to carry out the tight surface contact between the side fine positioning surface 8 on the part and the pneumatic positioning plate 10; start the pneumatic clamping device to press figure 1 Clamp as shown; pull out the fixed pin 9 in the center to complete the positioning of the workpiece 18. With this method, the positioning is accurate and reliable, and the use is convenient and quick.

Embodiment 3

[0033] by figure 2 The shown workpiece 18 is an example, and its processing operation steps are as follows:

[0034] First install as figure 1 and image 3 The fixture shown; the side rough positioning surface 1 of the workpiece 18 is pressed figure 1 After the shown position leans on the coarse positioning rod 16, press the fixed bolt 9 with the center that has been processed. image 3 Shown method, insert in the central through hole 7 of workpiece to be processed; Subsequently, as figure 1 and image 3 As shown, start the cylinder behind the pneumatic positioning plate 10 to realize the fast clamping and pushing of the pneumatic positioning plate 10 to ensure that the side fine positioning surface 8 on the workpiece 18 is in contact with each other; start the clamping cylinder again, and use the pneumatic device to perform the following steps: figure 1 After the shown pneumatic clamping, the center pin 9 is pulled out to complete the final accurate positioning of the w...

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PUM

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Abstract

The invention discloses a clamp used for self-positioning of the processing surfaces. The clamp is provided with a central positioning hole (15) and a central positioning bolt (9); when a workpiece (18) is positioned on the clamp, the central positioning bolt (9) is inserted into the central positioning hole (15) and the central through hole (7) of the workpiece (18) at the same time, so as to lead the central positioning hole (15) and the central through hole to be coaxial; the central positioning bolt (9) is removed when the workpiece (18) is being clamped and processed. The invention also discloses an operation method used for the clamp. By adopting the technical proposal and using the self-positioning of the processing surfaces, the positioning is exact and reliable; the usage is convenient and fast in combination with the clamping of the cylinder; by adopting the steps of initial positioning and precise positioning, the positioning is convenient and the final poison is exact; a plurality of processing surfaces can be processed by one-step clamping, and the position precision is easier to be ensured.

Description

technical field [0001] The invention belongs to the technical field of processing technology equipment for mechanical parts, and more specifically, the invention relates to a fixture that utilizes the positioning of the workpiece processing surface itself. In addition, the present invention also provides the operation method of the above-mentioned fixture utilizing the positioning of the workpiece processing surface itself. Background technique [0002] In the processing of light alloy die castings, when using CNC machining center CNC or special processing machine tools, a type of workpiece is often encountered. There are many parts to be processed, and parts with high requirements for shape tolerance and assembly accuracy. It often has a more prominent feature of symmetrical processing and assembly centered on the hole to be processed. This kind of parts often cannot meet the processing and assembly accuracy requirements of the parts due to the improper selection of the po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/06
Inventor 徐章跃黄海吴仁荣张建军
Owner THIXOMAG TECHNOLOGH WUHU
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