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Machining process for electric-driving axle of new energy bus

An electric drive shaft and mechanical processing technology, which is applied in the field of mechanical processing of electric drive shafts for new energy buses, can solve the problem of out-of-tolerance of the verticality of the flange reference plane, low production efficiency, and unstable dimension of the positioning pin hole on the flange surface and other problems to achieve the effect of improving consistency and precision, improving production efficiency, and eliminating taper phenomenon

Inactive Publication Date: 2016-06-15
JIANGSU SUN WAY GRP FEIDA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a new energy bus electric drive shaft processing technology to overcome the out-of-tolerance of the flange reference plane verticality, the unstable size of the positioning pin hole boring on the flange surface and the production failure of the new energy bus electric drive shaft. inefficiency

Method used

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  • Machining process for electric-driving axle of new energy bus

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Embodiment 1

[0025] see figure 1 , figure 1 It is a schematic diagram of the general structure of the electric drive shaft of the new energy bus of the present invention. A new energy passenger car electric drive shaft machining process, comprising the following steps:

[0026] (1) Rough car;

[0027] (2) Quenching and tempering;

[0028] (3) semi-finishing car;

[0029] (4) CNC precision turning;

[0030] (5) Knurled key;

[0031] (6) The outer circle of the bearing gear 1 is finely ground, and the permanent magnet steel sleeve is matched with the outer circle 2;

[0032] (7) Machining center drilling, boring and reaming positioning pin hole 4, milling keyway 6;

[0033] (8) Spline intermediate frequency quenching.

[0034] After the process flow is improved, the intermediate frequency quenching of the spline is adjusted to the final process, which fundamentally eliminates the influence of heat treatment deformation on the process benchmark of the center hole, because the process ...

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Abstract

The invention provides a machining process for an electric-driving axle of a new energy bus. The machining process comprises the following steps of (1), rough turning; (2), tempering; (3), semi-finish turning; (4), numerical control finish turning; (5), spline rolling; (6) bearing retainer outer circle finish grinding, and permanent magnet steel sleeve match outer circle finish grinding; (7), positioning pin hole drilling, boring and reaming and key slot milling which are performed on a machining center; and (8), spline medium-frequency hardening. According to the machining process for the electric-driving axle of the new energy bus, through improvement on a technological process and innovation on a machining method, a new, mature and feasible manufacture process is provided for batch and fine-quality production of electric-driving axles of new energy buses.

Description

technical field [0001] The invention belongs to the technical field of electric drive shaft machinery for new energy passenger cars, and in particular relates to a machining process for electric drive shafts of new energy passenger cars. Background technique [0002] The general structure of the electric drive shaft of the new energy bus is as attached figure 1 As shown, it includes a bearing gear 1, a permanent magnet steel sleeve matching outer circle 2, a flange datum plane 3, a positioning pin hole 4, and an involute spline 5. The original technological process of the electric drive shaft of the new energy bus is: rough turning—quenching and tempering—semi-finishing turning—NC finishing turning—knurling key—intermediate frequency quenching of the spline—finishing the outer circle of the bearing gear, and the permanent magnet steel sleeve to match the outer circle 2—Drilling and boring positioning pin hole 4 and milling keyway 6 in the machining center. In the finishing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 杨进靳天龙朱维东杨煜朱婷
Owner JIANGSU SUN WAY GRP FEIDA CO LTD
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