Automobile manufacturing industry as homebred those who change a course is ceaseless deepen, the semifinished product of main part also enters motor transmission case gradually homebred turn program. Be in new homebred in changing semifinished product test and verify, because the standard quality demand of of all kinds semifinished product is very high, and production method of home and technology are opposite lag, development difficulty is accordingly greater. In phase of test and verify of new semifinished product, machine treatment spot must have a better working method. In this one domain, shanghai is general made a few attempts, effect is distinct. Regard semifinished product as the supplier, the development of semifinished product leaves successfully do not switch on the mobile phone the support that machines product line, in initiative phase affirmative meeting encounters problems of various semifinished product blemish. How to overcome the limitation of new semifinished product, need the cooperation of many sided and effort, also need the participation of the generator of machine treatment spot and support. The generator of machine treatment spot has its oneself advantage, they are trying cutting in, obtain the first-hand data of the problem, their job reachs the designated position to mattered to semifinished product supplier directly whether solve a problem as soon as possible. Accordingly, in phase of test and verify of new semifinished product, machine treatment spot must have a better working method. In this one domain, limited company of Shanghai general motors is passed collect, arrange, inform, feedback, discuss, harmonious, contact this a series of processes, with joint efforts of semifinished product supplier, obtained very good result. Collect semifinished product in trying cutting, although semifinished product supplier undertakes patternmaking according to semifinished product blueprint pouring, but the dimension public errand as a result of semifinished product blueprint and pouring the difference that medium craft, equipment reachs molten iron shrinkage to wait, dimension of appearance, position appears in all can bringing about effective treatment, model the semifinished product that uses antrum with original machine treatment appears difference, spot of reason product line must collect the semifinished product when trying cutting to be in the blemish of each respects, so that semifinished product supplier has specific aim ground to make further effort, make its produce quality quantity to get assuring. The with raw wool base treatment state in trying cutting has mutual connection, measure through eye, quite, measure, the method such as the test, undertake description and digital camera photograph a photograph union quantifying, the problem that preliminary description appears for the first time, had made work of the first pace to have seasonable feedback, real report, the graph is shown 1 times expecting to falling for jockey workpiece has visual inspection. For example, cover semifinished product to the cylinder body of car engine and crock, general meeting is like next blemish: ● semifinished product carries medium interference in equipment; The shrinkage cavity of ● significant position, sand holes, stomatic; ● antrum appearance is too too tall, low; Deviate of position of core of ● antrum appearance, mud; ● antrum appearance is short of caustic; Surplus of ● semifinished product is too large; ● surface crackle; ● is built more child; ● hard spot; ● impurity; Leak of ● oil duct, aqueduct. Differ according to above the blemish of the type, part of one's job does not give the attention is checked, graph supplier of 2 the member that it is Technical Division backer, semifinished product and manufacturing site personnel are issueing material point to know semifinished product limitation. Nextpage collator machines the blemish information that spot basis gathers to undertake arranging pool. Following watches are trying the problem pool of cutting phase for the semifinished product of some model cylinder body that produced on March 5, 2000, the graph is shown 3 times for photograph of its part blemish. Inform the problem detailed list after will be being arranged to feedback in time relevant section staff, by they and connection of semifinished product supplier. To semifinished product supplier, machine treatment line " inform " the accuracy of the problem is very important, and staff of machine treatment string understands machine program and treatment facilities situation more than semifinished product supplier, can know the actual condition of certain problem more consequently. The problem content that such facilitating suppliers put forward according to client discovery undertakes an analysis in time, search, till amend a mould,get reliable basis. Supplier of feedback semifinished product undertakes according to the size of the problem, type classify ground is analysed, adopted step feedback gives a client the staff member of relevant personnel and machine treatment spot. They are analysed according to their, the settlement that makes each issues the measure, date that finish and the problem that signal some to may not belong to them. Some problems may process state and present semifinished product as a result of the semifinished product previously different, but all still may belong to the product that accords with blueprint requirement, reason all belongs to acceptability semifinished product, such feedback also can raise pair of machine to machine the judgement of spot problem. Discuss the staff member that regards production as the spot, the question that raise just often sets out from the angle of oneself, at this moment both sides also needs to undertake be discussinged further commutative respective opinion. Semifinished product supplier is analysed according to his, show the rationality that does so or the problem matter that settle hard, at this moment, both sides all can get consensus through talking things over, same, the staff member of product line spot also is trying the problem analysis in cutting according to oneself, the settlement that offers an issue train of thought. It is with V6 crankshaft semifinished product exemple, at the outset semifinished product supplier by 4 crankshaft pouring model, after trying cutting, have one only only pouring modular semifinished product allows to be used on product line, later, personnel searchs the disease location that satisfies product line requirement hard jointly related manufacturing site and etc of semifinished product supplier, finally, 4 crankshaft are pouring the semifinished product that the model produces is passed entirely check and accept, satisfied manufacturing requirement already so, assured the benefit of the supplier again. The problem that encounters in harmonious product treatment is not entirely to be assumed by semifinished product manufacturer, because sometimes the blueprint that the product of semifinished product supplier accords with an user completely asks (the production public errand that is like cylinder body semifinished product is in commonly ± 1. 5mm) , if do not accord with blueprint to ask, he should undertake the correction of the mould; But accord with blueprint requirement, he has reason to need not be made revise. Need bilateral efforts to solve this kind of problem at this moment. For example, the durability problem that cutting tool encounters, when same cutting tool is processing original entrance semifinished product, the durability numerical value of cutting tool can amount to 500, but can machine 250 or so only however when processing new semifinished product. Same machine tool, same cutting parameter, the life of cutting tool is different however, need both sides to have the job such as anatomize, test at this moment, make clear the other reason of the problem, if this semifinished product brings about the real reason that cutting tool durability drops to wait, eventual disclosure is semifinished product hardness rose than importing semifinished product hardness so 10% , but in the technical requirement limits that this one value still belongs to semifinished product blueprint. At this moment, the semifinished product that cannot say as the user semifinished product supplier is supplied has a problem, and the work that can do two sides right now, it is cutting tool management department on one hand can have cutting tool optimize; It is on the other hand can talk things over with semifinished product supplier cooperate, let them making pouring in the fall that solves semifinished product hardness limits problem, make its are close to the hardness that imports semifinished product as far as possible, with benefit at raising cutting tool durability. Workpiece carries medium interference problem in equipment, sometimes the change of the semifinished product over all dimension of workpiece, the likelihood brings about the interference in carrying. But should check when semifinished product dimension, semifinished product accords with blueprint, but cannot carry the past on the machine tool namely. The semifinished product that supplier of the machine tool when the problem goes to debug level in the machine tool uses is different, machine tool supplier debugs a machine tool is the first batch of offerred semifinished product, its dimension both may be next deviation, one is to go up deviation, the transportation that transforms a machine tool afresh at this moment structural cost, time all does not allow, can coordinate semifinished product supplier to amend a mould only, will satisfy the transportation in the machine tool thereby. Contact semifinished product is passed after checking and accept, enter normal and devoted production. The semifinished product that spot of this opportunity treatment still wants to collect new batch is machining medium circumstance, according to the size of the problem, instantly or undertake feedback periodicly pouring quality problem, so seasonable contact and feedback are met benefit reduces needless waste at both sides, make new issue gets be settlemented in time thereby. Last word user is sacred, this is the new concept in production catenary. Once fluctuation relation cooperates the ground very good, use reasonable means method, often can achieve the result of get twice the result with half the effort in actual production, final implementation double win. CNC Milling
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