摘要
气门摇杆轴支座是柴油机一个主要零件,是柴油机摇杆座的结合部。本文主要论述了气门摇杆轴支座的加工工艺及其夹具设计。气门摇杆轴支座的尺寸精度、形状精度以及位置精度的要求都很高,而连杆的刚性比较差,形状复杂,容易产生变形,因此在安排工艺过程时,就需要把各主要表面的粗精加工工序分开,并使工序集中。逐步减少加工余量、切削力及内应力的作用,并修正加工后的变形,就能最后达到零件的技术要求。设计气门摇杆轴支座零件的机械加工工艺规程及2×φ13mm孔工艺装备夹具设计,使我学习到了许多机械加工的专业知识和实践内容。
Abstract
Valve rocker beari
ng is a major diesel e
ngi
ne parts, diesel e
ngi
ne is a combi
natio
n of the rocker seat. This article discusses the mai
n valve rocker beari
ng the processi
ng tech
nology a
nd fixture desig
n. Valve rocker beari
ng accuracy of the size, shape a
nd locatio
n precisio
n accuracy of the requireme
nts are very high, a
nd the rigid li
nkage relatively poor, the shape complex, pro
ne to deformatio
n, i
n the process of arra
ngeme
nt whe
n it
needs to the surface of the mai
n crude Fi
nishi
ng processes to separate a
nd focus o
n processes. Gradually reduce Jiago
ngyulia
ng, cutti
ng force a
nd the role of stress a
nd deformatio
n of the ame
ndme
nt process, will be able to reach parts of the fi
nal tech
nical requireme
nts. Desig
n-valve rocker beari
ng parts of the machi
ni
ng process of order a
nd 2 × φ13 mm hole equipme
nt fixture desig
n process, I lear
ned a lot of machi
ni
ng expertise a
nd practical co
nte
nt. 1、零件的工艺分析及生产类型的确定 1.1零件用途 气门摇杆轴支座是柴油机一个主要零件。是柴油机摇杆座的结合部,20(+0.10—+0.16)孔装摇杆轴,轴上两端各装一进气门摇杆,摇杆座通过两个13mm孔用M12螺杆与汽缸盖相连,3mm轴向槽用于锁紧摇杆轴,使之不转动。汽缸盖内每缸四阀使燃烧室充气最佳,气门由摇杆凸轮机构驱动,摩擦力小且气门间隙由液压补偿。这种结构可能减小燃油消耗并改善排放。另外一个优点是减小噪音,这种结构使3.0升的TDI发动机运转极端平稳。 1.2零件的工艺分析 其材料为HT200。该材料具有较高的强度,耐磨性,耐热性及减振性,适用于承受较大应力,要求耐磨的零件。该零件上主要加工面为上端面,下端面,左右端面,2-13mm孔和20(+0.1——+0.06)mm以及3mm轴向槽的加工。20(+0.1——+0.06)mm孔的尺寸精度以及下端面0.05mm的平面度与左右两端面孔的尺寸精度,直接影响到进气孔与排气门的传动精度及密封,2——13mm孔的尺寸精度,以上下两端面的平行度0.05mm。因此,需要先以下端面为粗基准加工上端面
展开...
ng is a major diesel e
ngi
ne parts, diesel e
ngi
ne is a combi
natio
n of the rocker seat. This article discusses the mai
n valve rocker beari
ng the processi
ng tech
nology a
nd fixture desig
n. Valve rocker beari
ng accuracy of the size, shape a
nd locatio
n precisio
n accuracy of the requireme
nts are very high, a
nd the rigid li
nkage relatively poor, the shape complex, pro
ne to deformatio
n, i
n the process of arra
ngeme
nt whe
n it
needs to the surface of the mai
n crude Fi
nishi
ng processes to separate a
nd focus o
n processes. Gradually reduce Jiago
ngyulia
ng, cutti
ng force a
nd the role of stress a
nd deformatio
n of the ame
ndme
nt process, will be able to reach parts of the fi
nal tech
nical requireme
nts. Desig
n-valve rocker beari
ng parts of the machi
ni
ng process of order a
nd 2 × φ13 mm hole equipme
nt fixture desig
n process, I lear
ned a lot of machi
ni
ng expertise a
nd practical co
nte
nt. 1、零件的工艺分析及生产类型的确定 1.1零件用途 气门摇杆轴支座是柴油机一个主要零件。是柴油机摇杆座的结合部,20(+0.10—+0.16)孔装摇杆轴,轴上两端各装一进气门摇杆,摇杆座通过两个13mm孔用M12螺杆与汽缸盖相连,3mm轴向槽用于锁紧摇杆轴,使之不转动。汽缸盖内每缸四阀使燃烧室充气最佳,气门由摇杆凸轮机构驱动,摩擦力小且气门间隙由液压补偿。这种结构可能减小燃油消耗并改善排放。另外一个优点是减小噪音,这种结构使3.0升的TDI发动机运转极端平稳。 1.2零件的工艺分析 其材料为HT200。该材料具有较高的强度,耐磨性,耐热性及减振性,适用于承受较大应力,要求耐磨的零件。该零件上主要加工面为上端面,下端面,左右端面,2-13mm孔和20(+0.1——+0.06)mm以及3mm轴向槽的加工。20(+0.1——+0.06)mm孔的尺寸精度以及下端面0.05mm的平面度与左右两端面孔的尺寸精度,直接影响到进气孔与排气门的传动精度及密封,2——13mm孔的尺寸精度,以上下两端面的平行度0.05mm。因此,需要先以下端面为粗基准加工上端面
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