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1.設(she)備(bei)選擇要(yao)(yao)合理(li)。粗機(ji)(ji)(ji)(ji)械零(ling)件(jian)加工主要(yao)(yao)是(shi)切斷(duan)了大(da)多數的(de)機(ji)(ji)(ji)(ji)械加工余量,不需(xu)要(yao)(yao)高(gao)精密(mi)(mi)(mi)機(ji)(ji)(ji)(ji)械零(ling)件(jian)加工,所(suo)以粗加工應該更大(da)的(de)權力(li)和(he)高(gao)精度(du)的(de)機(ji)(ji)(ji)(ji)床(chuang),完成(cheng)過程(cheng)堅持使用一(yi)個相對較高(gao)的(de)精密(mi)(mi)(mi)機(ji)(ji)(ji)(ji)器。粗糙和(he)精加工在不同的(de)機(ji)(ji)(ji)(ji)器上,可以充分發(fa)揮設(she)備(bei)能力(li),可以延長(chang)其使用壽命精密(mi)(mi)(mi)機(ji)(ji)(ji)(ji)床(chuang)。

2.精(jing)密零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)廠為了保證精(jing)密零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)度(du),粗(cu)和(he)細機(ji)(ji)械(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)分別從比較(jiao)好的。因為當粗(cu)機(ji)(ji)械(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong),切(qie)削(xue)量大(da),工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)(jian)(jian)的切(qie)削(xue)力(li)、夾緊(jin)力(li)、熱、機(ji)(ji)械(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)表(biao)面有明顯的加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)硬(ying)化(hua)現(xian)象,工(gong)(gong)(gong)(gong)件(jian)(jian)(jian)(jian)(jian)在較(jiao)大(da)的內應(ying)力(li),如果粗(cu)糙(cao),粗(cu)糙(cao)的機(ji)(ji)械(xie)零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)完成(cheng)后(hou)連續,零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)精(jing)度(du)將很快失(shi)去了由于(yu)應(ying)力(li)重分布。對于(yu)一些高精(jing)密零(ling)(ling)件(jian)(jian)(jian)(jian)(jian)的機(ji)(ji)械(xie)零(ling)(ling)部(bu)件(jian)(jian)(jian)(jian)(jian)的加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。在粗(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)和(he)精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)后(hou),還應(ying)安排(pai)或時效處(chu)理低溫退(tui)火過程,消除(chu)內部(bu)應(ying)力(li)。

3.在精密零件加(jia)(jia)工工藝路(lu)線,經常安排(pai)(pai)(pai)熱處(chu)理(li)過程(cheng)。地點安排(pai)(pai)(pai)如下(xia):熱處(chu)理(li)過程(cheng),改善其切削加(jia)(jia)工性能(neng)的金(jin)屬,如退火、正火、回火、一般(ban)安排(pai)(pai)(pai)在機(ji)(ji)械(xie)零件加(jia)(jia)工。消(xiao)除(chu)內(nei)部(bu)應(ying)力,如時效處(chu)理(li),調節治療,如總布置圖,粗加(jia)(jia)工后(hou),但在完成。為了提高機(ji)(ji)械(xie)性能(neng)的部(bu)件,如滲碳淬火和回火,一般(ban)安排(pai)(pai)(pai)在機(ji)(ji)械(xie)零件加(jia)(jia)工。如熱處(chu)理(li)后(hou)變形大,但也要安排(pai)(pai)(pai)比較后(hou)的加(jia)(jia)工過程(cheng)。

1. Equipment selection should be reasonable. Rough machine parts processing mainly cuts off most of the machining allowance, does not need high precision machine parts processing, so rough processing should have greater power and high precision machine, complete the process adhere to the use of a relatively high precision machine. Roughness and finish machining can give full play to the ability of equipment and prolong the service life of precision machine tools on different machines.

2. In order to ensure the precision of precision parts, the processing of rough and fine parts is the best. Because when rough mechanical parts are machined, the cutting force, clamping force, heat and machined surface of the workpiece have obvious hardening phenomenon. The workpiece has larger internal stress. If rough and rough mechanical parts are machined continuously, the accuracy of the workpiece will soon lose due to stress redistribution. For some high precision parts of the mechanical parts processing. After roughing and finishing, low temperature annealing should be arranged or aged to eliminate internal stress.

3. Heat treatment process is often arranged in the process route of precision parts. Location arrangement is as follows: heat treatment process to improve the cutting performance of metals, such as annealing, normalizing, tempering, generally arranged in the processing of mechanical parts. Eliminate internal stress, such as aging treatment, adjust treatment, such as general layout, rough processing, but after completion. In order to improve the mechanical properties of parts, such as carburizing, quenching and tempering, generally arranged in the processing of mechanical parts. If the deformation is large after heat treatment, the final processing process should also be arranged.