摩托车发动机缸体三面加工工艺
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摘要
以某摩托车发动机缸体三面八孔的加工为研究对象,分析了各孔的加工精度要求及技术难点,在分析传统加工工艺不足的基础上,利用工序集中原则,提出了镗、锪、攻丝复合加工的工艺方案,进而设计了三面加工专用机床整体布局方案;通过分析缸体结构及工艺特点,确定了工件的加工姿态;最后根据球室、台阶孔、螺纹孔的工艺要求及结构特点等确定了三面精镗、锪削、攻丝同时加工的工艺方案。实际生产应用表明:缸体生产节拍为0.5min/件,合格率达到99.9%以上,缸体加工后各项精度指标均达到或超过图纸要求。
Using some motorbike engine cylinder 3-side,8-hole process,we analyze every hole's process accuracy demand and technical difficulty. Based on analyzing traditional production craft defects,we take advantage of the process focus principle. Then we put forward a process craft w here boring,reaming,spot facing are multiply used. We then designed a 3-side special tool machine layout case; By analyzing the cylinder structure and craft features,we ensure the workpiece process gesture; Finally according to ballroom,stage steps,threaded hole's craft and structure feature,we ensure the 3-side accurately boring,spot facing,milling craft case. Practical manufacture application shows: Cylinder takt is 0. 5 min/piece,and the percentage of passing is more than 99. 9%. After cylinder process,all accuracy numbers are all over the blueprint demands.
Using some motorbike engine cylinder 3-side,8-hole process,we analyze every hole's process accuracy demand and technical difficulty. Based on analyzing traditional production craft defects,we take advantage of the process focus principle. Then we put forward a process craft w here boring,reaming,spot facing are multiply used. We then designed a 3-side special tool machine layout case; By analyzing the cylinder structure and craft features,we ensure the workpiece process gesture; Finally according to ballroom,stage steps,threaded hole's craft and structure feature,we ensure the 3-side accurately boring,spot facing,milling craft case. Practical manufacture application shows: Cylinder takt is 0. 5 min/piece,and the percentage of passing is more than 99. 9%. After cylinder process,all accuracy numbers are all over the blueprint demands.
引文
[1]肖铁忠,李烜,黄娟,等.发动机缸体曲轴孔精加工专用夹具设计与研究(英文)[J].机床与液压,2014(24):117-121.
[2]刘敬平,冯仁华,杨靖,等.摩托车发动机性能优化[J].内燃机工程,2012,33(1):71-76.
[3]袁华,沈健.发动机缸体加工工艺的新发展[J].组合机床与自动化加工技术,2016(3):1-3.
[4]Yang Qibiao,Wu Yin,Liu Dun,et al.Characteristics of serrated chip formation in high-speed machining of meterials[J].The International Journal of Advanced Manufacturing Technology,2016,86(5):1201-1206.
[5]肖铁忠,黄娟,罗静.摩托车发动机缸体三面七孔加工专用夹具设计[J].组合机床与自动化加工技术,2016(5):126-128.
[6]景富军,谭胜龙,刘玲,等.我国机床数控化的现状和未来对策[J].制造技术与机床,2013(4):42-45.
[7]张洪涛,杨海军.具有让刀功能的镗孔及切端面装置的研究[J].制造技术与机床,2013(4):134-136.
[8]李洋.发动机缸体轴承盖专用机床设计[J].组合机床与自动化加工技术,2015(1):150-152.
[9]李文迪,王合增,杨红梅.精铣缸体底面钻铰定位销孔数控机床的研发[J].组合机床与自动化加工技术,2013(6):124-129.
[10]罗静,肖铁忠,龚文君,等.发动机缸体曲轴孔加工专用镗床设计[J].制造技术与机床,2013(9):76-79.
[11]刘金武,杨宗哲,林旭阳.制动卡钳缸体CNC加工中心专用夹具定位方案分析[J].制造技术与机床,2017(9):21-25.
[2]刘敬平,冯仁华,杨靖,等.摩托车发动机性能优化[J].内燃机工程,2012,33(1):71-76.
[3]袁华,沈健.发动机缸体加工工艺的新发展[J].组合机床与自动化加工技术,2016(3):1-3.
[4]Yang Qibiao,Wu Yin,Liu Dun,et al.Characteristics of serrated chip formation in high-speed machining of meterials[J].The International Journal of Advanced Manufacturing Technology,2016,86(5):1201-1206.
[5]肖铁忠,黄娟,罗静.摩托车发动机缸体三面七孔加工专用夹具设计[J].组合机床与自动化加工技术,2016(5):126-128.
[6]景富军,谭胜龙,刘玲,等.我国机床数控化的现状和未来对策[J].制造技术与机床,2013(4):42-45.
[7]张洪涛,杨海军.具有让刀功能的镗孔及切端面装置的研究[J].制造技术与机床,2013(4):134-136.
[8]李洋.发动机缸体轴承盖专用机床设计[J].组合机床与自动化加工技术,2015(1):150-152.
[9]李文迪,王合增,杨红梅.精铣缸体底面钻铰定位销孔数控机床的研发[J].组合机床与自动化加工技术,2013(6):124-129.
[10]罗静,肖铁忠,龚文君,等.发动机缸体曲轴孔加工专用镗床设计[J].制造技术与机床,2013(9):76-79.
[11]刘金武,杨宗哲,林旭阳.制动卡钳缸体CNC加工中心专用夹具定位方案分析[J].制造技术与机床,2017(9):21-25.