Manufacturing and processing technology of a screw compressor shell
A technology of screw compressor and processing technology, which is applied in the field of metal processing, can solve the problems of affecting product processing quality, high manufacturing cost, and low production efficiency, so as to improve the overall processing efficiency, ensure repeat positioning accuracy, and reduce manufacturing cost. Effect
Active Publication Date: 2019-09-20
无锡锡压压缩机有限公司
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Problems solved by technology
The main problems are: 1. Finishing the shell on two machine tools with different processing performance, the number of parts clamping and part circulation is too many, and the processing process is long, which seriously affects the manufacturing and processing efficiency of the product
2. Repeated clamping of parts leads to extended auxiliary processing time such as transfer, alignment, and tightening, which seriously affects the formulation and arrangement of workshop production plans
3. The parts are repeatedly clamped, aligned and processed on two devices, which seriously affects the processing quality of the product
The existing shell processing and manufacturing process makes the processing accuracy of the parts low, the production efficiency is low, and the manufacturing cost is high, which seriously affects the market competitiveness of the enterprise
Method used
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Embodiment Construction
[0032] See Figure 1 to Figure 4 As shown, taking the processing of the screw compressor shell as an example, the part blank is cast with HT250 gray cast iron, and the shell is mechanically manufactured and processed according to the drawing requirements.
[0033] The specific mechanical manufacturing and processing methods are as follows:
[0034] (1) Grind the non-processed surface of the part and engrave the production number of the part; draw the end surface processing line of the rotor hole and the bearing hole joint surface on the surface of the part;
[0035] (2) Roughly mill the end face of the rotor hole and the end face of the bearing hole with an ordinary boring machine, and leave a margin of 1.5mm;
[0036] (3) Draw the cross line of the end surface processing line of the bearing hole and the rotor hole and extend to the side, draw the end surface of the intake flange, the foot plane, the end surface of the bottom, and the end surface of the special-shaped surface...
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The invention relates to the technical field of metal machining, in particular to a manufacturing and machining technology of a shell of a screw rod compressor. According to the manufacturing and machining technology of the shell of the screw rod compressor, transferring of parts can be reduced, the clamping and centering time can be reduced, the machining efficiency and the machining quality areimproved, and the machining cost is reduced. The manufacturing and machining technology comprises the following steps that (1) end face machining lines of combined faces of rotor holes and bearing holes are scribed on the surface of a part; (2) a common boring machine is used for conducting rough milling on the rotor hole end faces and the bearing hole end faces; (3) the machining lines are scribed; (4) the common boring machine is used for conducting heavy boring on the two rotor holes and the two bearing holes, the rotor hole bottom planes and the bearing hole bottom planes are subjected torough milling, a pair of positioning pin holes for the technology is formed, and the air inlet flange end face and the footing piece end face are subjected to rough milling; (5) a water pressure testis conducted on the part of the shell; (6) residual cutting stress formed by the shell during rough machining is removed; (7) a horizontal numerical control machining center is used for machining; (8)dimensional precision and form and position tolerance precision are tested and judged; and (9) deburring and cleaning are conducted, and an antirust agent is applied.
Description
technical field [0001] The invention relates to the technical field of metal processing, in particular to a manufacturing process for a screw compressor shell. Background technique [0002] The screw compressor market is relatively mature and stable. In recent years, with the increasing number of compressor manufacturers, the competition in the industry has become increasingly fierce. To manufacture screw compressors with simple structure, low cost, excellent performance and strong market competitiveness is the goal that all compressor manufacturers are constantly pursuing. [0003] A screw compressor is a volumetric gas compression machine that performs rotary motion. The compression of the gas is realized by the change of the volume of the shell, and the change of the volume of the shell is achieved by the rotary motion of a pair of rotors of the compressor in the shell. As a container for compressed gas and a support for screw compressor rotor components, the shell requ...
Claims
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IPC IPC(8): B23P13/02
Inventor 堵俊杰胡建军张开闯洪洲王刚
Owner 无锡锡压压缩机有限公司