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Technical method for forming semi-axle housing tube for large-diameter flange

A forming technology, a half-shaft sleeve technology, is applied in the field of plastic forming of metal parts to achieve the effects of ensuring coaxiality, reducing process difficulty, and reducing equipment investment costs

Active Publication Date: 2015-04-29
SHIYAN YUANJUN IND & TRADE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Aiming at the shortcomings of the existing half-shaft casing forming method, the invention provides a new type of forming technology method for the large-diameter flange half-shaft casing

Method used

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  • Technical method for forming semi-axle housing tube for large-diameter flange
  • Technical method for forming semi-axle housing tube for large-diameter flange
  • Technical method for forming semi-axle housing tube for large-diameter flange

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Embodiment Construction

[0016] A technical method for forming a large-diameter flange half-shaft sleeve. The forming technical method uses hot-rolled round steel as a blank, and the blank is cut by sawing and then heated, and then heated by an extruder to complete the upsetting head Steps; Then the head flange of the half-shaft sleeve is swung-rolled and formed by the orbiting rolling machine; finally, the half-shaft sleeve forging is formed through one positive extrusion and one reverse extrusion forming step; in the actual implementation process of the patent In, such as figure 1 As shown, the shape of the forging is complicated. The outer diameter of the forging head flange is φ202mm, the rod is a stepped shaft, the minimum rod diameter is φ88mm, and the length of the forging is 371mm. In addition, the required stroke for inner hole forming and retrieval is required. The equipment stroke is greater than 1000mm, the mold closing height is greater than 700mm, and there is a large enough worktable; the...

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Abstract

The invention discloses a technical method for forming a semi-axle housing tube for a large-diameter flange. The technical method comprises the following steps of: sawing hot-rolled round steel serving as a blank, heating, and upsetting by using an extruding machine; performing rotary forging for forming by using a rotary forging press; and performing forward extrusion once and backward extrusion to form a forged piece of the semi-axle housing tube. According to technical method, in the maximum process step of forming force required by the semi-axle housing tube, the flange is formed by the rotary forging press; and only an outer step axle and an inner step hole are formed when the head flange is formed by the rotary forging and is extruded. The technical method has the advantages that: the full filling of flange corners is ensured effectively, the investment cost of equipment is reduced effectively, the process difficulty of the subsequent extrusion process step is reduced, the coaxiality of finished products is easy to ensure, and the production cost of the forged piece is reduced while the yield of the products is improved.

Description

Technical field [0001] The invention relates to a method for forming a large-diameter flange half-shaft sleeve, and belongs to the technical field of plastic forming of metal parts. Background technique [0002] The half-axle sleeve is a critical part that bears heavy loads on the rear axle of a truck. It is required to withstand impact and alternating loads. The working conditions are very harsh, so the half-axle sleeve is required to have good mechanical properties. The flange of the half-axle sleeve for heavy truck bridges is close to the end face. The current domestic technology mostly uses three-step hot extrusion technology, but the technology itself still has poor coaxiality, which leads to a large machining allowance and difficulty in forming at the corners. Larger, technical problems that require welding to repair forgings. For products with a larger flange diameter, greater pressure is required to form, and traditional hot extrusion technology often applies forming pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
Inventor 蔡利王雪松刘志勇何金元
Owner SHIYAN YUANJUN IND & TRADE
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