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Screw rotor repairing process

A screw and rotor technology, applied in the field of screw rotor repair technology, can solve problems such as affecting the processing quality of the screw rotor, reducing the performance of the gas compressor, unable to check the space curved surface, etc., achieving the realization of processing benchmarks and measurement benchmarks, small processing errors, Small thermal deformation effect

Inactive Publication Date: 2007-01-03
成都大陆激光技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxide layer produced by surfacing welding is manually cleaned by fitters, which is labor-intensive and affects the processing quality of the screw rotor.
Since the original design data cannot be obtained, the spatial surface cannot be checked, and the original design requirements cannot be met, which greatly reduces the performance of the gas compressor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 Repair process of non-contact screw rotor

[0024] The process steps are as follows:

[0025] 1. Install the partially damaged screw rotor on the CNC profiling machine tool, measure the screw profile at the undamaged (or less damaged) part, and do the benchmark transfer. The measurement method is:

[0026] 1) Rotate the screw rotor, keep the needle probe in normal contact with the screw rotor, and measure point by point;

[0027] 2) According to the point-by-point measurement results, the screw rotor profile is obtained by computer fitting;

[0028] 3) Generate a three-dimensional model of a pair of female and male screw rotors to be repaired on the computer according to the data such as lead and number of threads, and make the two cooperate with the simulation to test whether the fitted profile data meets our requirements. Requirements for the screw rotor; if the corresponding requirements cannot be met, it is necessary to re-measure the profile, fit the...

Embodiment 2

[0034] Embodiment 2 Repair process of severely damaged contact screw rotor

[0035] The process steps are as follows:

[0036] 1. Install the above-mentioned damaged screw rotor on the CNC profiling machine tool, measure the screw profile at the undamaged or relatively small damaged part, and do the benchmark transfer. The measurement method is:

[0037] 1) Rotate the screw rotor, keep the stylus in normal contact with the screw rotor, and measure point by point (or: do not rotate the screw rotor, move the stylus along the axial direction, keep the stylus in normal contact with the screw rotor, and complete the measurement within one lead point-by-point measurement);

[0038] 2) According to the point-by-point measurement results, the screw rotor profile is obtained by computer fitting;

[0039] 3) Generate a three-dimensional model of a pair of female and male screw rotors to be repaired on the computer according to the data such as lead and number of threads, and make the ...

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PUM

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Abstract

The screw rotor repairing process includes the following steps: measuring screw profile, laser repairing of the defect part and shaping; and may also includes the steps of dynamic balance correction, detecting and polishing. The screw rotor repairing process of the present invention has the advantages of wide technological adaptability, simple operation, capacity of realizing the coincidence between the machining datum and the measuring datum, less machining error and less heat deformation.

Description

technical field [0001] The invention relates to the maintenance and detection technology of screw rotors, and in particular provides a repairing process of screw rotors. Background technique [0002] Gas compressors, including air compressors, ammonia or freon refrigeration compressors, etc., have high-precision screw rotors, complex manufacturing processes, high production costs, and long cycles. The process conditions of this type of screw rotor are harsh, the working pressure is from normal pressure to several atmospheric pressure, the air has to be filtered, and it can be used continuously for more than 10 years. [0003] The blanks of screw rotors are generally forgings or castings. The screw profiles are specially designed and have strict quality requirements, and special finger milling cutters are specially made to process the spiral. Therefore, the manufacturing cost of a pair of screw rotors is very high, only 1 million yuan per set of carbon steel, and the manufa...

Claims

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Application Information

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IPC IPC(8): B23P6/00
Inventor 陈江王一兵张静波
Owner 成都大陆激光技术有限公司