CN103846692A - 加工大型柴油机缸盖螺栓的夹紧定位装置 - Google Patents

加工大型柴油机缸盖螺栓的夹紧定位装置 Download PDF

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Publication number
CN103846692A
CN103846692A CN201210503550.6A CN201210503550A CN103846692A CN 103846692 A CN103846692 A CN 103846692A CN 201210503550 A CN201210503550 A CN 201210503550A CN 103846692 A CN103846692 A CN 103846692A
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China
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machining
clamping
hexagonal
tailstock
bolts
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付长青
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China Aviation Industry Standard Parts Manufacturing Co Ltd
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China Aviation Industry Standard Parts Manufacturing Co Ltd
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Priority to CN201210503550.6A priority Critical patent/CN103846692A/zh
Publication of CN103846692A publication Critical patent/CN103846692A/zh
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B23/00Tailstocks; Centres
    • B23B23/04Live centres

Abstract

本发明所述加工大型柴油机缸盖螺栓用的辅助夹紧定位装置包括六方胎和顶尖衬套。六方胎为圆柱套体,其内部设有容纳螺栓头部的孔,孔的形状为圆孔和六方孔,与所要加工的螺栓头部形状相一致,孔底部为六方体形,将六方胎均等地切割成三瓣,通过焊接方式焊在机床卡盘的三个爪上;顶尖衬套为圆柱套体,顶尖衬套装在尾座上。加工时,先将零件头部装在三爪卡盘上,将零件头部法兰面与工艺胎贴紧作为定位基准,然后夹紧;再将尾座向前移动,零件尾部装入到尾座的顶尖衬套中。

Description

加工大型柴油机缸盖螺栓的夹紧定位装置
技术领域
本发明涉及一种机械加工用定位夹紧装置,特别是在大型柴油机缸盖螺栓的加工时使用的辅助定位夹紧装置。 
背景技术
在使用车床加工大型柴油机缸盖螺栓时,用于零件头部六方尺寸较小,螺栓杆细长,且中间还有腰槽,加工腰槽切削余量较大,切削力相对较大,因此使用普通的车床三爪卡盘和尾部顶尖装夹,三爪夹紧面上又有环槽,接触面较小,车削时头部六方面容易被夹伤,车削时由于热胀冷缩现象,部杆变长弯曲,加工完后零件会成腰鼓形,不能满足尺寸要求。 
发明内容
本发明针对以上问题,设计了一套快速夹紧、定位的辅助装置,可以有效的提高该零件的加工精度,防止零件夹伤。 
本发明所述加工大型柴油机缸盖螺栓用的辅助夹紧定位装置包括六方胎和顶尖衬套。 
六方胎为圆柱套体,其内部设有容纳螺栓头部的孔,孔的形状为圆孔和六方孔,与所要加工的螺栓头部形状相一致,孔底部为六方体形,将六方胎均等地切割成三瓣,通过焊接方式焊在机床卡盘的三个爪上;顶尖衬套为圆柱套体,顶尖衬套装在尾座上。加工时,先将零件头部装在三爪卡盘上,将零件头部法兰面与工艺胎贴紧作为定位基准,然后夹紧;再将尾座向前移动,零件尾部装入到尾座的顶尖衬套中。然后开动机床进行加工。夹紧部分由于增大了接触面积,头部六方不易被夹伤。法兰面的角度与工艺胎的孔口角度一致,贴合紧密,使加工后的尺寸更加一致,尾部由于装上了一个顶尖衬套,限制了零件的径向跳动,轴向未顶紧,可以降低由于切削时杆部因热胀而伸长引起的弯曲。 
本发明装置的使用不但大大提高了该零件的加工效率,而且也大大提高了零件的加工精度,提高了合格率。 
附图说明
图1是装配示意图; 
图2是六方胎形状示意图;
图3是六方胎左视图;
图4是焊接后三爪形状示意图;
图5是焊接后三爪左视图;
图6是顶尖衬套形状示意图;
图7是待加工零件图;
具体实施方式
下面以加工图7所示零件为例,对本发明做详细介绍。 
将六方胎2切割成三瓣,通过焊接方式焊在三爪卡盘1上,将顶尖衬套3装入尾座4中并锁紧。加工时,先将零件头部六方装在三爪卡盘上,将法兰面与工艺胎贴紧作为定位基准,然后夹紧六方。再将零件尾部装入到尾座的顶尖衬套中,然后开动机床进行加工。 

Claims (1)

1.一种加工大型柴油机缸盖螺栓用的辅助夹紧定位装置,其特征在于:定位装置包括六方胎和顶尖衬套,六方胎为圆柱套体,其内部设有容纳螺栓头部的孔,孔的形状为圆孔和六方孔,与所要加工的螺栓头部形状相一致,孔底部为六方体形,将六方胎均等地切割成三瓣,通过焊接方式焊在机床卡盘的三个爪上;顶尖衬套为圆柱套体,顶尖衬套装在尾座上。
CN201210503550.6A 2012-12-01 2012-12-01 加工大型柴油机缸盖螺栓的夹紧定位装置 Pending CN103846692A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050073116A1 (en) * 2003-10-07 2005-04-07 Kazukane Kunii Jig plate
US20060213048A1 (en) * 2005-03-23 2006-09-28 Control Systems Technologies, Llc Positioning apparatus and method incorporating modular gimbal unit and jewelry processing system incorporating the positioning apparatus
CN201702254U (zh) * 2009-11-24 2011-01-12 中国航空工业标准件制造有限责任公司 细长螺栓头部无切削加工模具
CN202212604U (zh) * 2011-08-30 2012-05-09 安徽皖南新维电机有限公司 一种新型自定心四爪夹具
CN102773737A (zh) * 2012-08-15 2012-11-14 浙江中航来宝精工科技有限公司 法兰螺栓的车削加工方法和所用的定位、装夹装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050073116A1 (en) * 2003-10-07 2005-04-07 Kazukane Kunii Jig plate
US20060213048A1 (en) * 2005-03-23 2006-09-28 Control Systems Technologies, Llc Positioning apparatus and method incorporating modular gimbal unit and jewelry processing system incorporating the positioning apparatus
CN201702254U (zh) * 2009-11-24 2011-01-12 中国航空工业标准件制造有限责任公司 细长螺栓头部无切削加工模具
CN202212604U (zh) * 2011-08-30 2012-05-09 安徽皖南新维电机有限公司 一种新型自定心四爪夹具
CN102773737A (zh) * 2012-08-15 2012-11-14 浙江中航来宝精工科技有限公司 法兰螺栓的车削加工方法和所用的定位、装夹装置

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Application publication date: 20140611