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柴油机气缸体顶底面粗铣组合机床总体及夹具设计 论文
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柴油机气缸体顶底面粗铣组合机床总体及夹具设计
摘要本设计课题为柴油机气缸体顶底面粗铣组合机床总体及夹具设计。机床总体设计主要完成双面铣组合机床的“三图一卡”;拟订夹具的结构方案、绘制夹具总图及其零件图。
根据气缸体尺寸、形状、材料、加工部位的结构和加工精度、表面粗糙度等要求,确定选用卧式双面铣组合机床;为实现工件快进和工进配以移动工作台;被加工平面为大平面,材料为HT250,故刀具选择硬质合金端铣刀。夹具安装在移动工作台之上。在被加工零件的定位方面,本方案采用了“一面两销”的定位方式,以达到较好的定位效果。夹紧是通过手动夹紧,以四个压板实现夹紧,这样能很好的防止夹紧力作用下工件产生形变。由于被加工零件体积、重量较大,故采用支承板支承。另外通过夹具误差设计分析,能够较好地保证加工精度。
通过这样的设计来达到加工要求,以便能完成对柴油机气缸体顶底的粗铣,满足工厂制定的产量。
 
关键词:组合机床; 夹具; 气缸体; 铣削
 
 
 
 
 
 
 
 
 
 
 
The diesel of the overall modular machine tool and jig for thick mill the surface and bottom of cylinder body of the diesel engine
Abstract: The diesel of the overall modular machine tool and jig are designed for thick mill the surface and bottom of cylinder body of the diesel engine. The system design mainly completes “three charts and a card” about the two-sided mill modular machine-tool. The jig design is to complete the structure plan, the assembly drawing and the parts drawing.
According to the cylinder body size, the shape, the material, processing request and so on spot structure and processing precision, surface roughness, determined selects the horizontal-type two-sided mill aggregate machine-tool; In order to realize the work piece to enter quickly with the labor enters matches by moves the work table; Is processed the plane is the big plane, the material is HT250, therefore cutting tool choice hard alloy face cutter. The jig installs in moves above the work table. In is processed the components the localization aspect, this plan has used "two sells at the same time" the locate mode, by achieves the good localization effect. Clamps is through manual clamps, clamps by four clamps realizations, like this can very good prevent clamps under the action of force the work piece to have the deformation. Because is processed the components volume, the weight is big, therefore uses the support plate supporting. Moreover designs the analysis through the jig error, can guarantee the processing precision well.

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