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Manufacturing process of stator

A manufacturing process and stator technology, applied in the manufacture of stator/rotor bodies, etc., can solve problems such as excessive energy consumption, large equipment investment, and extremely high metallographic requirements, and achieve the goals of improving production efficiency, ensuring output quality, and improving strength indicators Effect

Inactive Publication Date: 2011-09-07
镇江中虎弹簧有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Traditional processing methods have defects such as low efficiency, excessive energy consumption, excessive investment in equipment, and unstable product quality.
The stator is a kind of transmission mechanism, which has high requirements on the wear resistance of the internal teeth, and at the same time has extremely high requirements on the metallurgy of the product (grain size grade is 6), which is difficult to achieve by traditional manufacturing methods

Method used

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Embodiment Construction

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0025] The process route of the present invention is: cutting → annealing → billet making → lubrication → extruding holes → extruding teeth

[0026] (1) Blanking: CNC band sawing machine is used for blanking, the verticality is less than or equal to 0.3

[0027] (2) Annealing: use a well-type vacuum annealing furnace to evacuate and fill with nitrogen for protection annealing. After annealing, the oxidative decarburization unilateral is less than or equal to 0.1, and the hardness of the material after annealing is HB113-120.

[0028] 20CrMnTi spheroidizing annealing process:

[0029] like figure 1 , Requirements: 1. Heating rate <150℃ / h, cooling rate <50℃ / h;

[0030] 2. Pre-vacuum, fill with nitrogen after each pumping, the pressure is ≥ 0.01Mpa;

[0031] 3. The annealed metallographic structure is F+P ball, and the grade is 4-6

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Abstract

The invention relates to a manufacturing process of a stator, which comprises the following steps: (1) blanking: adopting a numerical control band sawing machine to carry out blanking with a verticality being smaller than or equal to 0.3; (2) annealing: adopting a well type vacuum annealing furnace to vacuumize and fill nitrogen for protection and annealing with an oxidation and decarbonization jersey knit being smaller than or equal to 0.1 and material hardness HB of 113-120 after the annealing; (3) blank preparing: adopting an ordinary C6130 lathe to prepare a blank by controlling a height error within 0.3; (4) lubrication process; (5) hole extruding: adopting an ordinary 4000KN oil press to extrude with extruding force P of 280T, an extruding hole diameter phi of 39+ / -0.05 and an extruding depth of 70+ / -0.5mm by reserving 5-6mm at the bottom of the hole after extruding with hole wall roughness of 1.6; and (6) gear extruding: adopting a 4000KN oil press to extrude with the extrudingforce P of 300T, gear accuracy of + / -0.03 and an extruding depth of 80+ / -0.5mm.

Description

technical field [0001] The invention relates to a new manufacturing process of a stator, which is used in the field of hydraulic transmission and belongs to the technical field of hydraulic motors. Background technique [0002] At present, there are many types of stators on the market, which are widely used in hydraulic motors and steering gears, but they are basically processed by traditional manufacturing processes. Traditional processing methods have defects such as low efficiency, excessive energy consumption, excessive equipment investment and unstable product quality. The stator is a kind of transmission mechanism, which has high wear resistance requirements for internal teeth and extremely high metallographic requirements (grain size grade 6) of the product, which is difficult to achieve by traditional manufacturing methods. SUMMARY OF THE INVENTION [0003] 1. Technical problems to be solved: [0004] Aiming at the above deficiencies, the present invention provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/02
Inventor 孟昭达
Owner 镇江中虎弹簧有限公司
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