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摘 要
在生產(chǎn)過(guò)程中,使生產(chǎn)對(duì)象(原材料,毛坯,零件或總成等)的質(zhì)和量的狀態(tài)發(fā)生直接變化的過(guò)程叫工藝過(guò)程,如毛坯制造,機(jī)械加工,熱處理,裝配等都稱之為工藝過(guò)程。在制定工藝過(guò)程中,要確定各工序的安裝工位和該工序需要的工步,加工該工序的機(jī)車及機(jī)床的進(jìn)給量,切削深度,主軸轉(zhuǎn)速和切削速度,該工序的夾具,刀具及量具,還有走刀次數(shù)和走刀長(zhǎng)度,最后計(jì)算該工序的基本時(shí)間,輔助時(shí)間和工作地服務(wù)時(shí)間。
本文對(duì)CA6140車床后托架進(jìn)行了結(jié)構(gòu)和工藝分析,確定了機(jī)械加工工藝路線,制訂出了零件的制造工藝方案和機(jī)械加工工藝規(guī)程,并為加工零件上底平面設(shè)計(jì)了一套專用銑床夾具。
關(guān)鍵詞 工序,工藝,工步,加工余量,定位方案,夾緊力
ABSTRACT
Enable producing the target in process of production (raw materials, the blank , state of quality and quantity on part become always ) take place direct course of change ask craft course, if the blank is made, machining, heat treatment , assemble etc. and call it the craft course. In the course of making the craft , is it confirm every erector location and worker step that process need this of process to want, the locomotive of processing , this process , and the entering the giving amount of the lathe, cut depth , the rotational speed of the main shaft and speed of cutting, the jig of this process, the cutter and measuring tool, a one hundred sheets of number of times still leaves and a one hundred sheets of length leaves, calculate basic time of this process , auxiliary time and service time of place of working finally.
CA6140 lathe to stand here after a technical analysis of the structure and to determine the mechanical machining line, develop a parts manufacturing processes of the programme and mechanical machining and components for the processing of facing design of a milling machine jig.
Keywords: The process, worker one, worker's step , the surplus of processing, orient the scheme , clamp strength
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