拨叉键槽铣削专机及夹具设计+CAD图纸
毕业论文关键词： 车床拨叉；加工工艺；铣削专机；夹具设计；定位；夹紧
Fork keyway milling special purpose machine and fixture design
Abstract：In this paper, for the fork keyway milling plane design.First of all, for the design of special fixture.Processing manufacturability analysis was carried out on the parts, according to the principle of six positioning clamping scheme is determined, calculate the clamping force and the position error.Design appropriate clamping mechanism, carries on the overall design.Then, the design of special machine tool, choose cutter according to processing requirements, to calculate the parameters such as cutting force, cutting power.To calculate and check machine drive system.Finally, the whole design of economic and technical analysis and conclusion is given.From the structure of parts appearance analysis, its shape is complex, and not easy to machining, so the choose is casting parts.Its main processing surface are the two end and slot hole, fork fork, in processing because of the machining accuracy is easier than hole machining precision of the guarantee.So, in the design based on the principle of hole after face first, and pide the process of hole and the plane for roughing and finishing stage, to ensure the machining accuracy.In this design, first with a surface processing a datum, then, to the datum processing and the corresponding hole.In the back of the mechanic process, all this hole for the locating datum, processing fork fork two end face, groove, hole, bottom plane and inclined plane, in the whole processing process, adopted the milling machine, drilling machine and boring machine, respectively.And design the boring and milling and side milling keyway of special fixture, and the positioning of their adopted a two pin location.Because the parts size is not big, the clamping force is not big.Clamping way, therefore, adopt manual clamp, the clamp is simple, design is more convenient, meet the requirements of the fixture.
Key words: lathe fork;The processing technology;Milling plane;Fixture design;Positioning;The clamping
目 录
绪论 1
1本课题的来源、设计的主要目的和技术要求 2
1.1 本课题要解决的主要问题和设计总体思路 2
1.2 国内外的发展状况及现状的介绍 2
1.3 总体方案论证 3
2 拨叉的分析4 2.1零件的作用4
2.2拨叉的工艺分析4 2.3拨叉的工艺要求4 2.3.1加工要求4
2.3.2平面的加工5