CN201275588Y - 一种改进的圆锥内圈锻件挤压成形模 - Google Patents

一种改进的圆锥内圈锻件挤压成形模 Download PDF

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Publication number
CN201275588Y
CN201275588Y CNU2008201743088U CN200820174308U CN201275588Y CN 201275588 Y CN201275588 Y CN 201275588Y CN U2008201743088 U CNU2008201743088 U CN U2008201743088U CN 200820174308 U CN200820174308 U CN 200820174308U CN 201275588 Y CN201275588 Y CN 201275588Y
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extrusion
die
cavity
extruding
cone
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CNU2008201743088U
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谭进军
曹淑明
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

本实用新型公开了一种改进的圆锥内圈锻件挤压成形模，该圆锥内圈锻件挤压成形模包括模体、挤压凹模腔，所述的挤压凹模腔为圆锥型腔。挤压工序由原来的正挤压和反挤压一次压出大档边，改为挤压工序单纯的反挤压，只将毛坯压成筒形，大档边在冲孔时正挤压压出。这种挤压凹模的圆锥形型腔，除具有挤压时承受压力和坯料挤压流动时阻力小外、裂纹轻，使用寿命长的优点外，还具有定位性好，即坯料墩粗后放入凹模中易放正的特点。

Description

一种改进的圆锥内圈锻件挤压成形模
技术领域
本实用新型涉及一种机械锻造模具，尤其是涉及一种圆锥滚子轴承内圈锻件的挤压成形模具的改进。
背景技术
一般常识，圆锥滚子轴承内圈锻件是在数台压力机组成的生产线上，采用锻件挤压-冲孔工艺完成的，其缺点是在锻件滚道处(即挤压凹模工作型腔R角部位)出现周围基本均匀的疲劳裂纹，挤压凹模容易损坏，使用寿命低。造成挤压凹模工作型腔R角部位疲劳裂纹的主要原因是，在锻造挤压过程中，坯料所受的力主要是正挤压和反挤压同时存在的复合挤压力，其挤压力与单纯的正挤压力或反挤压力相比要大得多，由于所受的力大，坯料金属在挤压过程中所受的阻力就大，坯料流动与凹模的摩擦力就大，造成这种阻力和摩擦力大的原因是由于现行的挤压凹模型腔是台阶型腔，由于这种台阶型腔，才使锻件滚道处R角所受的摩擦力及坯料挤压流动时所受的阻力都大，致使出现疲劳裂纹现象，降低了挤压凹模的使用寿命。
发明内容
本实用新型的目的就是针对现行挤压凹模型腔是台阶型腔，容易在锻件滚道处R角部位出现疲劳裂纹现象，影响挤压凹模使用寿命的问题，提供一种改进的挤压凹模，这种改进的挤压凹模具有使用寿命长、结构简单的优点。
本实用新型的目的是通过以下技术方案实现的，该圆锥内圈锻件挤压成形模包括模体、挤压凹模腔，所述的挤压凹模腔为圆锥型腔。
由于挤压凹模腔由台阶型腔改为圆锥型腔，挤压工序由原来的正挤压和反挤压一次压出大档边，改为挤压工序单纯的反挤压，只将毛坯压成筒形，大档边在冲孔时正挤压压出，冲孔成形的凹模工作型腔仍与原来的工艺一样。
本实用新型的有益效果：这种挤压凹模的圆锥形型腔，除具有挤压时承受压力和坯料挤压流动时阻力小外、裂纹轻，使用寿命长的优点外，还具有定位性好，即坯料墩粗后放入凹模中易放正的特点。
附图说明
下面结合附图详细说明本实用新型的实施例
图1为本实用新型的剖视图
图中：1、模体  2、挤压凹模腔
具体实施方式
如图1所示，该该圆锥内圈锻件挤压成形模包括模体1、挤压凹模腔2，所述的挤压凹模腔2为圆锥型腔。由于挤压凹模腔2由台阶型腔改为圆锥型腔，挤压工序由原来的正挤压和反挤压一次压出大档边，改为挤压工序单纯的反挤压，只将毛坯压成筒形，大档边在冲孔时正挤压压出，冲孔成形的凹模工作型腔仍与原来的工艺一样。

Claims (1)

1、一种改进的的圆锥内圈锻件挤压成形模，该圆锥内圈锻件挤压成形模包括模体、挤压凹模腔，其特征在于所述的挤压凹模腔为圆锥型腔。
CNU2008201743088U 2008-10-29 2008-10-29 一种改进的圆锥内圈锻件挤压成形模 Expired - Fee Related CN201275588Y (zh)

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CNU2008201743088U CN201275588Y (zh) 2008-10-29 2008-10-29 一种改进的圆锥内圈锻件挤压成形模

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397964A (zh) * 2010-09-10 2012-04-04 江苏威鹰机械有限公司 蓄能器外壳锻造工艺
CN103415361A (zh) * 2011-03-10 2013-11-27 谢夫勒科技股份两合公司 用于制造特别是用于圆锥滚子轴承的轴承环的方法
CN113414331A (zh) * 2021-06-18 2021-09-21 临清宇联轴承科技有限公司 一种窄系列薄壁大直径轴承套圈二合一毛坯成型工艺

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397964A (zh) * 2010-09-10 2012-04-04 江苏威鹰机械有限公司 蓄能器外壳锻造工艺
CN102397964B (zh) * 2010-09-10 2013-10-09 江苏威鹰机械有限公司 蓄能器外壳锻造工艺
CN103415361A (zh) * 2011-03-10 2013-11-27 谢夫勒科技股份两合公司 用于制造特别是用于圆锥滚子轴承的轴承环的方法
CN113414331A (zh) * 2021-06-18 2021-09-21 临清宇联轴承科技有限公司 一种窄系列薄壁大直径轴承套圈二合一毛坯成型工艺

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