C620-1B顶尖套零件图
C620-1B型车床顶尖套的机械加工
工艺及加工左端5个孔的夹具设计
摘要：C620-1B型车床顶尖套及其加工左端5个孔的夹具设计是对顶尖套的零件分析、工艺规程设计、夹具设计和误差分析等部分。
首先是对零件的分析，从功用、结构、工艺进行分析，对顶尖套进行一定的了解，然后选择出合适的毛坯材料，计算出毛坯量及公差。根据实际生产中顶尖套的机械加工过程，选择定位基准包括粗基准和精基准的选择，初步确定加工路线，完成对每一步加工后的余量及切削用量与时间定额的计算，选择合适的加工工艺装备，确定加工工艺。
最后完成对加工左端5个孔的专业夹具的设计，包括夹具结构的设计、夹紧装置的设计等，明确夹具的装配要求。因为在定位误差、夹紧误差和加工过程中力的存在对零件加工的影响，需要对误差进行计算分析，确定夹具的合理。
关键词：夹具；加工工艺；基准；误差
Machining technology of lathe top cover and
fixture design of machining hole
ABSTRACT：The center sleeve of c620-1b lathe and the fixture design for machining 5 holes on the left end are the parts analysis, process specification design, fixture design and error analysis of the center sleeve.
The first is the analysis of parts, from the function, structure, process analysis, the top cover for a certain understanding, and then choose the appropriate blank material, calculate the blank amount and tolerance.According to the actual production of the top set of mechanical processing process, the selection of positioning datum including coarse datum and fine datum selection, the preliminary determination of the processing route, the completion of each step after the processing of the allowance and cutting amount and time quota calculation, the selection of appropriate processing equipment, determine the processing process.
Finally, complete the design of professional fixture for machining 5 holes on the left end, including the design of fixture structure and the design of clamping device, etc., and make clear the assembly requirements of fixture.Because the positioning error, clamping error and the presence of force in the processing process have an impact on the processing of parts, the error needs to be calculated and analyzed to determine the reasonability of the fixture.
KEYWORDS:Fixture; Processing Technology; Benchmark; Error
目录
1引言…………………………………………………………………1
1.1研究背景及意义……………………………………………………1
1.2研究内容……………………………………………………………2
2零件分析……………………………………………………………3
2.1功用分析……………………………………………………………3
2.2结构分析……………………………………………………………3
2.3工艺分析……………………………………………………………3
3零件毛坯的选择……………………………………………………3
3.1毛坯材料的选择……………………………………………………3
3.2计算毛坯余量及公差………………………………………………3
3.3绘制毛坯图…………………………………………………………4
4工艺规程设计………………………………………………………4
4.1选择定位基准………………………………………………………4
4.2确定工艺路线………………………………………………………5
4.3确定加工设备及工艺装备…………………………………………6
4.4加工余量、工序尺寸及公差的计算………………………………7
4.5切削用量的计算……………………………………………………8
4.6时间定额的计算……………………………………………………8
4.7确定工序及工艺……………………………………………………16
5夹具设计……………………………………………………………17
5.1夹具设计概述………………………………………………………17
5.2夹具结构设计………………………………………………………18
5.3夹紧装置的设计……………………………………………………19
5.4夹具的装配要求及使用注意事项…………………………………21
注释……………………………………………………………………22
参考文献………………………………………………………………24
附录……………………………………………………………………25
夹具装配图
固定V型块
活动V型块
夹具体零件图
铰链
压板
2摘要
3设计所包含文件
4目录
5夹具设计部分
6过程卡
1字数
7工序卡
