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Machining method for irregular key axis blank

A processing method and special-shaped key technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problems of high processing cost and high rejection rate, and achieve the effect of reducing processing cost, improving internal organization, and shortening process flow

Inactive Publication Date: 2006-03-15
LIFENG AUTO SPARES YUNXIAN
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a processing method for a special-shaped key shaft blank, so as to overcome the problems of high processing cost and high reject rate of existing processing methods

Method used

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  • Machining method for irregular key axis blank
  • Machining method for irregular key axis blank

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Embodiment Construction

[0013] combine figure 1 , figure 2 The special-shaped key shaft blank of the steering machine shown in the description of the embodiment of the present invention is as follows:

[0014] The special-shaped key shaft blank of the steering machine uses No. 35 cold-drawn round steel with a diameter of 22 mm as the raw material, and is realized through the following steps:

[0015] a. After annealing, pickling and phosphating the cold-drawn round steel, then sharpen it, and cold-draw the outer circular surface and double-sided flat parts through the forming die in the wire drawing machine to obtain the initial flat blank. The diameter of the outer circular surface is 22 mm to 19.9 mm, the thickness of the flat part on both sides is 18 mm to 17.9 mm;

[0016] b. Then the initial flat blank is annealed, pickled, phosphated, then sharpened, and the outer circular surface and double-sided flat parts are formed by cold drawing again through the forming die on the wire drawing machine...

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Abstract

A technology for manufacturing the shaped key shaft blank includes such steps as providing cold-drawn circular steel, annealing, pickling, bonderizing, sharpening, cold die drawing, repeating said steps one or two times, and cutting short by needle length. Its advantages are low cost and improved internal structure.

Description

technical field [0001] The invention relates to a processing method for a special-shaped key shaft blank of a car steering machine. Background technique [0002] At present, the structure of the special-shaped key shaft parts used in the steering gear of cars such as Shanghai Sail, Changan Suzuki, and Hainan Mazda is: the special-shaped key shaft is flattened on both sides, and then splines, grooves, and connecting parts are provided on the shaft body. and other functional structures. Among them, the technical requirements for double-sided flattening are high: the straightness requirement is 1mm / m, and the symmetry requirement is less than 0.05:100mm. The processing method of the special-shaped key shaft is generally as follows: use ordinary cold-drawn round steel to blank, turn the outer circular surface, then mill the flat parts on both sides, and reserve the grinding allowance; then grind the outer circular surface and the flat parts on both sides, Obtain the flat shaft...

Claims

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Application Information

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IPC IPC(8): B23P23/04
Inventor 李光柱张海航李华高炳兴刘永辉杨洁云李宗培古家久
Owner LIFENG AUTO SPARES YUNXIAN
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