Precision shaping method of solid bearing holder

A solid cage and precision forming technology, applied in the field of bearing cage forming, can solve problems such as difficult large-scale production, increased processing costs, and complicated processes, and achieve reduced processing costs, improved production efficiency, and high surface quality. Effect

Inactive Publication Date: 2006-11-29
HENAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology adopts the conventional tissue superplasticity method, which requires complex superplastic pretreatment processes such as deformation heat treatment and cyclic heat treatment, which complicates the process, increases the processing cost, and makes it difficult to carry out large-scale production

Method used

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  • Precision shaping method of solid bearing holder

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Experimental program
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Effect test

Embodiment 1

[0014] The blank used in this embodiment is a brass HPb59-1 casting pipe material, which is turned into a ring-shaped blank. The blanking volume of the blank should include the body part of the cage, the end cover part, the cutting edge material for the separation process, and the remaining material after cutting.

[0015] Preheat the blank to 120°C and apply water agent graphite lubricant, put the blank into a box-type electric furnace, heat it to 620°C, keep it warm for 20 minutes, and then put it into a mold with a temperature of 580°C to deform the blank and fill the cavity of the die And take shape. The press machine that present embodiment adopts is hydraulic press. Mold such as figure 1 As shown: the extrusion forming part is mainly composed of a pressure head 1, a die 3, an ejector 4, a small ejector rod 5, an extrusion sleeve 6, and a lower die base 7. Among them, the indenter 1 is fixed on the movable beam of the press through a fixing device; the die 3 is located...

Embodiment 2

[0018] The blank used in this embodiment is a brass HPb59-1 extruded pipe material, which is turned into a ring-shaped blank. The blanking volume of the blank should include the body part of the cage, the end cover part, the cutting edge material for the separation process, and the remaining material after cutting.

[0019] Preheat the blank to 180°C and apply water-based graphite lubricant, put the blank into a box-type electric furnace, heat it to 650°C, keep it warm for 15 minutes, and then put it into a mold with a temperature of 620°C at a working speed of 2 mm / s , The pressure of 15MPa deforms the blank and fills the cavity of the die to complete the extrusion process. The press used in this embodiment is a conventional press. Its structure and working process are with embodiment 1.

Embodiment 3

[0021] The blank used in this embodiment is a brass HPb59-1 casting pipe material, which is turned into a ring-shaped blank. The blanking volume of the blank should include the body part of the cage, the end cover part, the cutting edge material for the separation process, and the remaining material after cutting.

[0022] Preheat the blank to 220°C and apply water-based graphite lubricant, put the blank into a box-type electric furnace, heat it to 680°C, keep it warm for 15 minutes, and then put it into a mold with a temperature of 650°C at a working speed of 2 mm / s , The pressure of 12MPa deforms the blank and fills the cavity of the die to complete the extrusion process. The press used in this embodiment is a conventional press. Its structure and working process are with embodiment 1.

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PUM

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Abstract

A precise forming method for the solid bearing holder includes such steps as coating lubricant on the surface of blank, heating at 580-850 deg.C for 10-20 min, putting it in a die set at 560-820 deg.C, and press forming.

Description

technical field [0001] The invention belongs to the technical field of forming a bearing cage, and mainly relates to a precise forming method of a solid bearing cage. Background technique [0002] During the operation of railway locomotives and some high-speed and heavy-duty equipment, due to the impact of impact, vibration and steering, the bearing cages of their key parts are randomly subjected to extremely large impact loads. In addition to the characteristics of high mechanical properties, high temperature resistance, wear resistance and friction reduction, the cage is required to have high riveting strength and easy separation of bearing components. Copper alloy has the characteristics of wear resistance and friction reduction, and its high-temperature mechanical properties are relatively good, so it is widely used in high-speed and heavy-duty bearings. However, due to the limitation of technical conditions, at present, the copper alloy bearing cage is still formed by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/02B21C23/32B21C29/00
Inventor 杨永顺王颜琦陈拂晓李慧丽杨茜
Owner HENAN UNIV OF SCI & TECH
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