A Machining Technology for Mass Production of Slender and Deep Hole Complicated Parts
A technology of complex parts and processing technology, which is applied in the field of parts machining, can solve problems such as lack of rationality, and achieve the effects of improving efficiency, ensuring machining accuracy, and ensuring clamping accuracy
Inactive Publication Date: 2018-09-28
CHINA UNIV OF MINING & TECH
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Problems solved by technology
[0004] The problem to be solved by the present invention is to provide a processing technology for mass production of slender, deep-hole complex parts in view of the lack of rationality in the existing processing technology
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Embodiment Construction
[0016] In order to clearly illustrate the technical features of this solution, specific implementations are described below in conjunction with the accompanying drawings.
[0017] A processing technology for mass production of complex parts with slender and deep holes, including the following processes:
[0018] (1) Blank preparation: The blank is obtained by casting, leaving a machining allowance of 3±0.2mm for the size of the inner hole and outer circle of the blank.
[0019] (2) Heat treatment: heat the workpiece to 400°C, keep it for 120 minutes and then cool it by air cooling.
[0020] (3) Turning process outer circle 2 and process positioning surface 22: The processing equipment is a CNC machine tool, the small diameter end of the part is clamped, and the positioning sleeve is used to position the small diameter end of the part on the clamping length of the three-jaw chuck. 2 A length, and then the big end face 22 of the car is used as a positioning reference for the subsequent ...
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The invention discloses a machining technology for batch production of thin and long deep-hole complex parts. The machining technology is characterized by sequentially comprising the following steps that 1, a blank is prepared; 2, the small end of each part is clamped, and the middle section of the part is turned as a technological external circle (2), the large-diameter end face is turned as a technological positioning face (22), and a positioning sleeve is used for positioning during clamping; 3, the technological positioning face (22) is used as a benchmark, the large-diameter end of the part is clamped, the end face and external circle of the small-diameter end are turned, and an inner hole of the small-diameter end is drilled; 4, the small-diameter end of the part is clamped, the steps that the large-diameter end external circle is turned, an inner hole is roughly turned, the inner hole is finely turned and an inner-side groove is turned are sequentially executed, and the positioning sleeve is used for positioning during clamping; 5, the technological positioning face (22) is used as the benchmark, the large-diameter end of the part is clamped, a machining center is used for milling all end faces, a polished hole and a screw hole are formed in the part, and a positioning block is used for positioning during clamping. During workpiece clamping, a special tool is used for clamping and positioning, and therefore the clamping precision and efficiency are improved.
Description
Technical field [0001] The invention belongs to the field of parts machining, in particular to a machining process for mass production of slender and deep hole complex parts. Background technique [0002] With the continuous development of the machinery manufacturing industry, the market demand for precision and compact equipment is increasing. However, due to the complex structure and high integration of its internal parts, it is costly when batch processing is carried out using traditional techniques. Complicated parts with slender and deep holes belong to one of them. This type of parts has relatively large long diameter, steps on the outer circle, through holes and grooves inside, and silk holes and smooth holes in the axial diameter direction. The size accuracy and shape Position tolerance is not easy to control. The traditional processing technology of this kind of parts is: blanking, heat treatment, car outer circle, boring, inner groove of car, and machining the surface ...
Claims
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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 卢世坤高迟刘初升王振乾武继达
Owner CHINA UNIV OF MINING & TECH