Hole positioning machining method for special-shaped part
A processing method and hole positioning technology, applied in positioning devices, metal processing equipment, metal processing mechanical parts, etc., can solve the problems of not meeting mass production, out of tolerance, easy size deviation, etc., to achieve positioning effect and achieve high precision , high-efficiency and high-precision effect
Active Publication Date: 2021-05-25
AEROSPACE LIFE SUPPORT IND LTD
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[0004] Purpose of the present invention: In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a hole positioning processing method for special-shaped parts, so as to solve the problem of preparing pin shaft clamping according to hole diameter classification in the existing processing methods of special-shaped parts positioned by holes During processing, because the size is easy to deviate and out of tolerance, the clamping positioning of each part is completely adjusted by manual feeling during the processing process, which does not meet the problem of mass production
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[0038] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0039] Aiming at the special-shaped parts positioned by positioning holes in the background technology, it has the characteristics of large diameter tolerance of the positioning holes, long axial length, and thin end wall thickness of the positioning holes, etc., and the main positioning surface of the special-shaped parts deviates from the pressing part , processing materials such as high hardness, high strength and high toughness, it is difficult to realize the accurate processing of this type of parts by the processing method of ordinary sizing cylindrical mandrel. The emb...
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The embodiment of the invention discloses a hole positioning machining method for a special-shaped part. The method comprises the following steps of inserting a radial expansion positioning device into a main positioning hole of the special-shaped part from an expansion end, and inserting a positioning pin into an auxiliary positioning hole; applying downward pressure to a main shaft of the special-shaped part, guiding the special-shaped part to move from top to bottom along the axis of the main positioning hole, and enabling the main positioning hole to be expanded under the radial expansion action of the radial expansion positioning device embedded in the main positioning hole; and milling the special-shaped part of which a main body is positioned through the main positioning hole and the radial expansion positioning device, and processing a blank part at the top end of the main positioning hole and a blank part at the top end of an auxiliary positioning hole to form a specified part shape. According to the technical scheme provided by the embodiment of the method, the problem that batch production cannot be met due to the fact that the size is easy to deviate and out of tolerance and clamping and positioning of each part are adjusted completely by manual feeling in the machining process in the existing manner that pin shaft clamping is prepared according to aperture classification for machining is solved.
Description
technical field [0001] This application relates to but not limited to the technical field of numerical control machining, especially a hole positioning machining method for special-shaped parts. Background technique [0002] In CNC milling, there are often some blanks and special-shaped parts that must be positioned by holes. In order to meet the design function requirements, the diameter tolerance of the holes is large, the axial length is long, and the end wall thickness of the holes is thin. [0003] The clamping scheme in the existing processing technology is: according to the classification of the aperture, the pin shaft clamping is prepared for processing. The operation process is cumbersome and complicated, and the processing size is easy to deviate and out of tolerance. The development of mass production forms. The specific reasons for the above processing problems are as follows: On the one hand, due to the large tolerance of the hole diameter, the long axis, and t...
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IPC IPC(8): B23Q3/18B23C3/00
CPCB23Q3/18B23C3/00B23Q2703/10
Inventor 金鑫
Owner AEROSPACE LIFE SUPPORT IND LTD