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Method for machining rotor of screw compressor through formation CBN grinding wheel

A technology of a screw compressor and a processing method, which is applied to metal processing equipment, manufacturing tools, grinding devices, etc., can solve problems such as difficult promotion of the screw rolling method, complex profiles, and difficulties in the design and manufacture of hobs, achieving convenience and high efficiency Conversion, firm grip, huge time and costly savings

Active Publication Date: 2014-08-20
郑州众邦超硬工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its complex profile, sharp points on the profile and asymmetric tooth shape, the design and manufacture of the hob is difficult, so the screw rolling method of rolling instead of milling is difficult to be popularized

Method used

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  • Method for machining rotor of screw compressor through formation CBN grinding wheel
  • Method for machining rotor of screw compressor through formation CBN grinding wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for processing a screw compressor rotor forming a CBN grinding wheel, comprising the following steps:

[0034] a. Grinding wheel substrate preparation: Grinding wheel substrate 1 is made of 45 steel forging, the quenched and tempered hardness is HRC28-32, after aging treatment, flaw detection is performed to ensure that there are no defects such as cracks and trachoma;

[0035] b. Semi-finishing of the grinding wheel base: After the semi-finishing of the forging part, according to the actual production situation, through holes are uniformly processed on both ends of the forging, and the two ends and inner holes are processed by the grinder. , the roughness Ra value is ≤0.8μm, the roundness requirement of the inner hole is ≤0.001mm, and the roughness Ra value is ≤0.4μm;

[0036] c. Finishing of the grinding wheel base: fasten the ground grinding wheel base 1 on the fixture of the high-precision CNC lathe, verify that the hole runout is ≤0.0015mm, and the end fac...

Embodiment 2

[0041] A method for processing a screw compressor rotor forming a CBN grinding wheel, comprising the following steps:

[0042] a. Grinding wheel base preparation: Grinding wheel base 1 is forged with 40Cr, the quenched and tempered hardness is HRC28-32, after aging treatment, flaw detection is performed to ensure that there are no defects such as cracks and trachoma;

[0043] b. Semi-finishing of the grinding wheel base: After the semi-finishing of the forging part, according to the actual production situation, through holes are uniformly processed on both ends of the forging, and the two ends and inner holes are processed by the grinder. , the roughness Ra value is ≤0.8μm, the roundness requirement of the inner hole is ≤0.001mm, and the roughness Ra value is ≤0.4μm;

[0044] c. Finishing of the grinding wheel base: fasten the ground grinding wheel base 1 on the fixture of the high-precision CNC lathe, verify that the hole runout is ≤0.0015mm, and the end face runout is ≤0.002...

Embodiment 3

[0049] A method for processing a screw compressor rotor forming a CBN grinding wheel, comprising the following steps:

[0050] a. Grinding wheel base preparation: Grinding wheel base 1 is forged with 35CrMo, the quenched and tempered hardness is HRC28-32, after aging treatment, flaw detection is performed to ensure that there are no defects such as cracks and trachoma;

[0051] b. Semi-finishing of the grinding wheel base: After the semi-finishing of the forging part, according to the actual production situation, through holes are uniformly processed on both ends of the forging, and the two ends and inner holes are processed by the grinding machine. , the roughness Ra value is ≤0.8μm, the roundness requirement of the inner hole is ≤0.001mm, and the roughness Ra value is ≤0.4μm;

[0052] c. Finishing of the grinding wheel base: fasten the ground grinding wheel base 1 on the fixture of the high-precision CNC lathe, verify that the runout of the hole is ≤0.0015mm, and the runout ...

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Abstract

The invention discloses a method for machining a rotor of a screw compressor through a formation CBN grinding wheel. The method includes the steps of preparation of a grinding wheel matrix, semi-finishing of the grinding wheel matrix, finish machining of the grinding wheel matrix, electroplating of CBN grinding materials and the like. The outline of the outer circle of the grinding wheel matrix is machined through a high-precision numerically controlled lathe, the outlines of different profiles can be converted conveniently and efficiently, production cost is greatly lowered, production cycle is shortened, non-milling deep grinding can be really achieved through the formation CBN grinding wheel, namely tooth profiles are machined by directly grinding an entity without carrying out preprocessing according to a traditional lathing method or a traditional milling method or other methods, a large amount of time and high expenses for manufacturing milling cutters are saved, and research, development and production of novel rotor profiles are accelerated.

Description

technical field [0001] The invention relates to the processing technology of superhard abrasives in the abrasives industry, in particular to a processing method for forming a CBN grinding wheel from a screw compressor rotor. Background technique [0002] Screw compressors, which are widely used in the fields of aerodynamic and refrigeration equipment, have a series of unique advantages such as simple structure, strong stability, long life, and high efficiency. Determines the reliability, efficiency and noise of the compressor. The profile of the rotor tooth profile is very complex and requires high processing. There are three commonly used processing methods: disc milling method, generating rolling method and forming grinding. cut method. [0003] The disc milling cutter milling method needs to mill the rotor tooth profile one by one, which belongs to discontinuous processing and has a large indexing error. Therefore, the milling method has the problems of low production e...

Claims

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Application Information

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IPC IPC(8): B24D18/00
Inventor 赵东辉于彦
Owner 郑州众邦超硬工具有限公司
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