Machining method for box cover of gearbox

A processing method and gear box technology, applied in the field of mechanical processing, can solve the problems of large eccentric processing amount of drill bit, uncorrectable drill bit, and increased processing time, so as to achieve the effects of reducing processing cost, easy control of position degree, and reducing processing time

Inactive Publication Date: 2015-11-18
CHONGQING JIANGJIN SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the center distance L between ΦA and the low-speed shaft hole ΦB, and the center distance L1 between ΦB and the gear pump hole ΦC, the center deviation of ΦC will be very large, resulting in too much eccentric processing of the drill bit when expanding the base hole, and the drill bit cannot be corrected, resulting in If there is a certain axis offset, it is necessary to use the milling cutter to program and mill the hole to correct it, and then use the boring cutter to process it. The milling speed is slow and the processing time is increased.

Method used

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  • Machining method for box cover of gearbox

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Effect test

Embodiment

[0030] A method for processing a gearbox case cover, comprising the following steps:

[0031] Step 1) Use GGG40 to cast the box cover, and form the high-speed shaft hole ΦA and the low-speed shaft hole ΦB on the box cover by placing a mud core;

[0032] Step 2) Ensure the center distance L between the high-speed shaft hole ΦA and the low-speed shaft hole ΦB, ensure the coaxiality between the high-speed shaft hole ΦA on the gearbox cover and the high-speed shaft hole on the gearbox body, and ensure that the gear box The coaxiality of the low-speed shaft hole ΦB on the cover and the low-speed shaft hole on the gear box body, the high-speed shaft hole ΦA and the low-speed shaft hole ΦB are finished; in this embodiment, the high-speed shaft hole ΦA and the low-speed shaft hole ΦB The finishing method is boring.

[0033] Step 3) The processing method of the high-speed shaft hole ΦA and the low-speed shaft hole ΦB also adopts a combined processing method for the box body and the ca...

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PUM

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Abstract

The invention discloses a machining method for a box cover of a gearbox which can reduce the machining time, lower the machining cost, and improve the product quality. The machining method comprises the following steps: step (1) casting the box cover and forming a high-speed shaft hole phi A and a low-speed shaft hole phi B in the box cover; step (2) ensuring a center distance L between the high-speed shaft hole phi A and the low-speed shaft hole phi B, and finish machining the high-speed shaft hole phi A and the low-speed shaft hole phi B; and step (3) ensuring a center distance L1 between the low-speed shaft hole phi B and a gear pump hole phi C, drilling the gear pump hole phi C, and then boring the gear pump hole phi C.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a processing method for a gearbox case cover. Background technique [0002] Gearbox is an important part widely used in mechanical transmission, and as a speed and energy transmission device, it is an indispensable equipment in construction machinery. Products such as aeration blowers, multi-stage compressors, steam compressors and high-speed centrifuges need a speed-increasing gearbox to speed up the compressor to the rated high speed of the compressor, compress and output the gas, and play the role of speed-up and The role of power transmission. [0003] The gear pump is used to lubricate and supply oil to the gearbox (when a pair of gears in the pump body are meshed and driven, the pressure in the space at the edge of the meshing area is reduced to generate a partial vacuum, and the oil in the oil pool enters the low-pressure air of the oil pump under the action...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 徐海燕段昌文杨雪琴
Owner CHONGQING JIANGJIN SHIPBUILDING IND
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