拨叉8008的加工工艺及夹具设计说明书.docVIP

拨叉8008的加工工艺及夹具设计说明书 ABSTRACT This design is a lather to become soon an appropriation for inside pulling out fork spare parts processing craft rules distance and some work prefaces tongs design.This pull out the construction of the fork spare parts than for complicacy, its the place that process is a peaceful in bore primarily.This design processes after processing first the bore.Process with flat surface the clear and definite dividing the line the bore the coarseness processes to process with the nicety the stage to guarantee their process the precise degree.The basis choice to pull out rough basis of conduct and actions of the biggest flat surface of the right in fork, process the in the center in general use bore, then be used as the precise basis with the bore that processed.Processing primarily work preface arrangement is first to process a flat surface with the center bore fixed position with the right side flat surface and below big bore of two flat surface, again with center bore the fixed position processes the big bore that carry down.While processing is to use the boring machine boring bore.Regard these two bores as the basis finally, process the right-hand slot respectively with the thread bottom bore of the a.Whole processes the process chose to use to the drill machine, miller with the boring machine .The tongs chooses to use the appropriation tongs, clipping tight way as to move to clip tight, clip tight and dependable, operation convenience.Therefore produce the efficiency higher, be applicable to the large quantity measures, the flowing water is on-line to process.Can satisfy the design request Keywords Process the craft,Fixed position,Clip tight,Appropriation tongs2 本科毕业设计(论文) 目录 摘 要本次设计是车床变速箱中拔叉零件的加工工艺规程及一些工序的专用夹具设 计。此拔叉零件的结构较为复杂,其加工的地方主要是孔和平面。本设计先加工 孔后加工面。将孔与平面的加工明确划分成粗加工和精加工阶段以保证它们的加 工精度。基准选择以拔叉右面的最大的平面作为粗基准,来加工中间的通孔,然 后以此加工过的孔作为精基准。主要加工工序安排是先以中心孔定位加工出顶平 面和右侧平面以及下面的大孔的两平面,再以中心孔定位加工出下端的大孔。加 工时是用镗床镗孔。最后以这两个孔为基准,分别加工右侧的槽和顶面的螺纹底