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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 effect of reducing the difficulty of the process, reducing the cost of equipment investment, and ensuring the coaxiality

Active Publication Date: 2012-06-27
SHIYAN YUANJUN IND & TRADE
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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 forming technical method of a large-diameter flange half-shaft casing, the forming technical method uses hot-rolled round steel as a blank, heats the blank after sawing and blanking, and completes the heading through an extruder after heating Then, it is formed by rolling with a rolling machine; finally, the forging of the half-shaft casing is completed through a forward extrusion and a reverse extrusion forming step; in the actual implementation of the patent, such as figure 1 As shown, the shape of the forging is complex, the outer diameter of the flange of the forging head is φ202mm, the stem is a stepped shaft, the minimum diameter of the stem is φ88mm, and the length of the forging is 371mm. The stroke of the equipment is greater than 1000mm, the closed height of the mold is greater than 700mm, and there is a large enough workbench; therefore, a large stroke hydraulic press is selected to complete the forward extrusion and reverse extrusion steps; for the larger d...

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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 forming technical method of a large-diameter flange semi-shaft casing, and belongs to the technical field of plastic forming of metal parts. Background technique [0002] The half-shaft bushing is a critical part that bears heavy loads on the rear axle of a truck. It is required to withstand alternating impact loads and the working conditions are very harsh, so the half-shaft bushing is required to have good mechanical properties. The flange of the half-shaft casing used for heavy truck bridges is close to the end face. The current domestic technology mostly adopts the three-step hot extrusion technology, but the technology itself still has poor coaxiality, resulting in more machining allowances and difficulty in corner forming. Larger, the technical difficulty of welding and repairing forgings is required. For products with larger flange diameters, greater pressure is required to form them, and the traditional hot extrusion...

Claims

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Application Information

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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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