The processing method of the stator

A processing technology and stator technology, applied in the manufacture of stator/rotor body, etc., can solve the problems of large blank machining allowance, complicated broach manufacturing, high grinding cost, etc., achieve low grinding cost, reduce coarse grain phenomenon, Good effect of heat treatment performance

Active Publication Date: 2011-12-14
DANFOSS POWER SOLUTIONS (JIANGSU) CO LTD
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AI Technical Summary

Problems solved by technology

However, there are the following disadvantages: the blank machining allowance is large, and the broaching thickness is 8.3mm on one side; the broach is complicated to manufacture, and the manufacturing and grinding costs are high; turning large-displacement stator bores is easy to vibrate the tool, and the cutting efficiency is low

Method used

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Embodiment Construction

[0036] figure 1 It is the overall process flow diagram of the present invention; figure 2 It is a specific process flow chart of step 100 of the present invention. Such as figure 1 and combine figure 2 Shown, the present invention provides a kind of stator processing technology method, and this method comprises the following steps:

[0037] Step 100: cold extruding the standard bar stock into a stator blank;

[0038] Specifically include the following steps:

[0039] Step 101: blanking, take a 20CrMnTiH standard bar of φ70-100 mm, and divide it into 50-70 mm long segments. In this step, the standard bar is usually divided by GW4028 sawing machine, of course other similar cutting equipment can be used.

[0040] Step 102: Blank making, surface turning the bar segment divided in step 101 to remove scale. In this step, the blank is processed using a C6140 lathe or similar equipment. There is no specific requirement for the thickness of the removed scale, it is only neces...

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Abstract

The invention relates to a technological method for processing a stator, and the method comprises the following steps of: step 100, performing cold extrusion on a standard bar stock to manufacture a stator blank; step 200, turning an excircle, an end face and a sealing groove on the stator blank obtained in the step 100 to manufacture a stator semi-finished product; and step 300, forming an innerhole on the stator semi-finished product obtained in the step 200 through burnish broaching to manufacture the finished product of the stator. By using the technological method, the chipping allowance of the blank is small; the manufacturing of a broaching tool is simple, and the grinding cost is low; the inner hole is not needed to be turned, the heat treatment performance of parts is good, and the anti-fatigue capacity of materials is improved; and a cold extrusion process is adopted, the flow property of a material is improved, and a multi-time spheroidizing annealing process is mixed intothe cold extrusion process so that organization particles of the material is further thinned, the coarse crystal phenomenon is reduced in the subsequent carburizing and quenching process, and the fatigue resistance of the material is greatly improved.

Description

technical field [0001] The invention relates to a processing method of a stator, in particular to a processing method of cold extrusion and fine drawing of a stator of a WP series motor, belonging to the technical field of mechanical product design and manufacture. Background technique [0002] WP series motor is a shaft-distributed cycloidal hydraulic motor, which has the advantages of small size, large torque, high efficiency and simple structure. Its main parts are composed of housing, output shaft, stator and rotor pair, spacer, back cover, linkage shaft and so on. Among them, the stator and rotor pair is the power generation source of the motor, which belongs to the core part, and is also the part with the most complicated processing technology among all parts, and its quality directly affects the performance of the entire motor. [0003] The existing WP motor stator and rotor pair adopts an integral structure, and the material is 20CrMnTiH, which is carburized and que...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02
CPCB23P15/00H02K15/02Y10T29/49009
Inventor 田荣贵曹敏健贲文军
Owner DANFOSS POWER SOLUTIONS (JIANGSU) CO LTD
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