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Segmental Grinding Method of Large Screw Compressor Rotor

A screw compressor and rotor technology, applied in the field of mechanical processing, can solve the problems of affecting the processing accuracy, increasing the load of the motor, increasing the size of the machine tool, etc., and achieve the effects of high processing accuracy, convenient modification and low production cost

Inactive Publication Date: 2017-05-10
SHAANXI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems to be solved in the process of forming grinding wheel grinding. With the development of machinery manufacturing industry, screw compressors, which are widely used in mining, construction, aviation and other fields, are becoming larger and larger. The screw rotor also becomes larger, which puts forward higher requirements for the processing of the screw rotor. The large tooth groove width of the helical surface makes the grinding wheel form grinding face a huge challenge. The matching shaped grinding wheel will increase the thickness of the grinding wheel, so the following problems arise: As the thickness of the grinding wheel increases, the quality of the grinding wheel will inevitably increase, the grinding area will increase, and the grinding force will increase; the quality of the grinding wheel will increase. Increasing the rigidity of the machine tool bed puts forward higher requirements, increasing the size of the machine tool and increasing the load of the motor; the rotation of the large grinding wheel will cause relatively strong vibration of the machine tool, which will affect the machining accuracy, and will inevitably put forward higher requirements for machine tool manufacturing

Method used

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  • Segmental Grinding Method of Large Screw Compressor Rotor
  • Segmental Grinding Method of Large Screw Compressor Rotor
  • Segmental Grinding Method of Large Screw Compressor Rotor

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Embodiment Construction

[0069] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0070] The subsection grinding device adopted in the present invention has a structure such as figure 1 As shown, including the bed 1, the bed 1 is respectively provided with a transverse guide rail 2 and a longitudinal chute 9, and the transverse guide rail 2 and the longitudinal chute 9 are perpendicular to each other; the longitudinal chute 9 is provided with a grinding wheel frame 3, and the grinding wheel frame 3 can Move along the longitudinal chute 9; one side of the grinding wheel frame 3 is provided with a boss 4, and one side of the boss 4 is provided with a grinding wheel 5; The workbench 6 is provided with a headstock 7 and a tailstock 10 parallel to each other, the headstock 7 is provided with a rotor clamping head for clamping the rotor workpiece 8, and the tailstock 10 is provided with a top for clamping the rotor workpiece 8 ...

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Abstract

The invention discloses a segmented grinding method for a large rotor of a screw compressor. The method comprises the specific steps that 1, an arc grinding wheel is trimmed; 2, the rotor type linear value point is selected according to the initial segmented line spacing; 3, an envelope path of the arc grinding wheel to machine the rotor is computed; and 4, a spiral groove is machined in a segmented mode. The large screw rotor is ground in a segmented mode through the arc grinding wheel; under the condition of lowering the requirements for machining equipment, the spiral face of the large rotor is segmented, the relative position of the grinding wheel and a workpiece is adjusted, and by conducting precision machining on the large screw rotor in a segmented grinding mode, abrasion to a tool is lowered on the premise of ensuring the machining precision. The requirements for equipment size and loads are low; the grinding tool can conduct profiling conveniently and is small in profiling quantity; the machining precision is high; the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of machining methods, and in particular relates to a segmental grinding method for a rotor of a large screw compressor. Background technique [0002] In recent years, screw compressors have been widely used in machinery, chemical industry, metallurgy, construction, mining, and aerospace due to their characteristics of stable high-speed operation, multi-phase mixed transmission, displacement is almost not affected by exhaust pressure, and easy operation and maintenance. In the industrial fields such as , the processing of the screw rotor as its core component has received extensive attention. [0003] With the increasing maturity of form grinding technology, form grinding is more and more used in the finishing of complex curved surfaces. The finishing of screw rotors for air compressors often adopts the form grinding wheel grinding method. However, there are many problems to be solved in the process of formi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00
CPCB24B1/00
Inventor 姚斌向明新张东生贾智杰沈志煌唐峰博冯文平管大渊
Owner SHAANXI UNIV OF TECH
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