Reach its to apply mediumly in craft into group technique

One, the basic idea that becomes set technology is in contemporary and mechanical production domain, as a result of the flying development of new technology new technology, the diversification of social demand, the product updates cycle shorten increasingly, make the business that much breed small lot produces much increase. And odd, the productivity that small lot produces tall, production cycle grows low, cost, technology measure backward, management is intricate also. Can change much breed small lot to produce the backward condition of the enterprise, improve productivity, can make full use of again equipment, drop the valid idea of product cost, use set technology namely. Becoming set technology is a variety of products the enterprise, component or spare parts, press proper similar sex standard, classify organizing into groups, it is a foundation with these groups, the organization produces each segment, the products plan that implements production of much breed small lot, rationalize that make and manages. Overcame traditional small lot to produce the defect of means thereby, make small lot production can achieve the technical economy result that is close to big batch production. To hardware design, a lot of spare partses have similar figure, those similar spare partses are OK add up becomes design a group of things with common features. A new part is OK form through revising an existing agnate part. Apply this concept, can decide composite spare parts truly. Composite spare parts is the spare parts of all features that include a design a group of things with common features. It by the design a group of things with common features inside all geometry element constitutes the part and become. Graph 10-9 place is shown is example of one integrated spare parts. To mechanical workmanship character, the application that becomes set technology appears more important than hardware design. Not only the spare parts of structural feature likeness but add up is become group, the spare parts with different structure still may have similar production procedure. For example, most casing spare parts has different figure and function, but they ask to bore hole, mill end panel, bore. Accordingly, can reach their similar conclusion. So OK a part that has similar treatment characteristic also add up is become a group of things with common features. Set out from this, process designs the job attainable simplify. As a result of the process with similar requirement of agnate spare parts, can build unit of a treatment to make agnate part then. And the spare parts treatment that machines unit to need to consider to have similar treatment characteristic only to every, the level that can make produce organization of preparation of plan, craft, production and management to wait for a job then is able to rise. Additional, as the application of computer technology and numerical control technology and development, already also made the computer into group technique auxiliary technology design, flexible the foundation of production system, CIMS. 2, the 　 of spare parts encode in becoming set technology (one) the fundamental classification that spare parts classification codes is a kind of basis of diagnostic attribute have without, differentiate the thing into the process of different group. Encode can be used at classification, the thing that it is pair of different groups gives different code. All sorts of features that the encode that becomes set technology is pair of mechanical spare partses give different code. Do these features include: ? Mallet of beard of  of witch of cut of Mao of languid  admire standing tall and upright kills rice huller to refined ⒓ of idle of impossible of mildew of Ba of harmonious Jiu owlet washing with watercolors loses Mu Xia of  of languid of ⒘ of abb Ji Yun however Ji of breed of children's hair of  of Xi of  of  a flat stone on iron rammer with ropes attached at the sides oranges red  takes  of ⑿ Wu Chun to take ⑽ extensive. Uses code can be arabic numerals, the Latin alphabet, even Chinese character, and their combination. The most convenient, the commonnest is digital code. To process design, hope code distinguishs can exclusively product part a group of things with common features. When design or defining program of a kind of encode, two kinds of property must assure, namely must code be: ? Instruct of tiger of model of  of majestic delay  newly-risens sun Xi of  copy U holds vasting bursa of  of  of peptone of  of Ping  source in the palm to kitchen evil spirit of quicklying Qiao Luo returns grave Suo ê to be retreated so that sole  hut stops Suo ê retreats  of Pu of Bo of  of Ying of ㄔ of imperial order of Suo of  of Pu of all that get Di! ∧ carapace noise of  of brilliant of establish of  of the small raw meat or fish that hold apricot steals arsine of Suo of carbohydrate of border of Chinese torreya of some spoon of Mei of basketry A Chinese-style unlined garment muddleheaded of writing of stalk of Mao of Mu  Guo asks a sword melt) of type of word? matrix; Composite. Administrative levels type also calls unit code, demarcate of code of before the meaning of each code has one class. Its advantage is with very few code potential energy represents weakness of much information; is coding system very complex. Be hard to develop so. Chain says again multivariate code, pile up an on each code to represent some kind of news, with in front code have nothing to do. In code digit same condition falls, what chain structure capacity compares administrative levels style is little, but coding system is simpler. Composite is the mixture of administrative levels type and chain. Most coding system uses Composite. At present already more than 100 kinds code into group technique the system produces medium applying in industry. One L of JLBM classifies coding system is our country machinist trade department organizes formulate and approval carries out into system of group technique coding. (2) JLBM this system uses brief introduction of system of code of one 1 classification advocate the Composite structure of code and deputy code section, pile up a composition by 15. If its structure expresses 10-2 place to show. Express 10-6 　 this system one, the name category that 2 stopwatch show a part, it uses the function of the spare parts and name to serve as a mark, in order to facilitate design branch retrieves, if express 10-3 place,show. 3 ～ are piled up 9 times is appearance and treatment code, the exterior form that represents swing tower spare parts and part of blame swing tower respectively, in-house appearance, planar, Kong Jiji machines the sort with auxiliary treatment, if express 10-4 place,show. 10 ~ 15 it is auxiliary code (deputy code) , the feature of the material that represents a part, semifinished product, heat treatment, main measure and precision. Dimension code set large, medium-sized and small-sized 3 measure series, mix for appearance machinery, average machine respectively the 3 sort such as heavy machinery enterprise parameter is used. Precision code provided high accuracy and low precision, medium precision, freeboard precision 4 class. In medium precision and high accuracy between two class, press the different treatment face that has precision demand again combine and fractionize becomes a few kinds, will express with different feature, if express 10-5 and watch 10-6 place,show. Expressing 10-7 is the example that has classified encode to circumgyrate spare parts according to JLBM-1. (3) method of encode of method of spare parts encode has manual encode and computer to assist encode two kinds. Manual encode is the encode law that encode personnel basis classifies coding system, contrast part drawing is made up with manual square one by one give each to pile up code. Manual encode efficiency is low, labor strength is great, different encode personnel writes the code that give often abhorrent. The computer assists encode undertake with man-machine interaction means. Conversational mode can be two kinds of types, one kind is interlocution type, according to the query of computer hilum act, use clavier one by one replies, general answer " Y " or " N " , can write the code that gives a part automatically. Another kind is choice type, also call menu type, according to the menu that computer screen shows, choose correspondence with clavier date (it is 0 ～ commonly a 9 several) , with respect to the code that can implement a part. The computer is auxiliary make up efficiency tall, error rate is low, reduce the labor intensity of encode personnel, the causes as a result of understanding or judgement mistake encode when can avoiding manual encode is wrong. 3, the spare parts classifies the method of the group at present the classification of the spare parts becomes group have the following kind method: Inspect check law, pull current Cheng to analyse law and encode taxonomy namely. 1. The law that inspect check is reach its to make a process according to part drawing appearance or actual part by the technology division that has experience, judge the similar sex of the spare parts intuitionisticly by experience, to the spare parts classification is become group. This kind of method is simple, serving as thick classification is effective method. Differentiate the spare parts for example swing tower kind, casing kind, lever kind etc, but it is more difficult to should make detailed classification. Application is at present so less. 2. Producing flow to analyse a way is one kind presses the method that sex of craft feature likeness classifies. Can get stuck according to the craft course of every kinds of spare parts above all, list the craft line that expresses 10-8 place to show is expressed. In the watch " ˇ " earmark states this kinds of spare parts wants to be machined on this machine tool, the analysis that produces flow through opposite next, Baconian, arrange, can change watch 10-8 into the form that expresses 10-9. From inside expressing 10-9 OK and apparent ground sees, 20 kinds of spare partses that give out can be made up it is 3 groups, each groups have similar craft line. Producing flow to analyse a way is the method with a kind of very common application. 　 of course of watch 10-9 craft 3. Encode taxonomy spare parts passes code, personal classics realized very fine classification, but if distribute the part with identical encode merely,be a group, criterion the amount of every groups of spare partses often very few, short of enlarges the purpose of craft batch. Actual previous generation piles up not identical spare parts, also often have similar process and can belong to same group. For this, can you still use two kinds of methods to the spare parts of personal encode in group: ? ê of annulus of thighing Jia of thorn an ancient small-mouthed wine vessel spits gizzard Pi ā ! The partial code that?1) feature piles up a law to choose to reflect feature of spare parts craft among them from inside spare parts code serves as in group according to, the part that can get one group has similar technology feature a group of things with common features, these a few codes call a feature to pile up. If express 10-10 place to show, regulation 1, 2, 6, pile up a same part 4 times 7 to differentiate it is a group. The feature that can see this group of parts is an axis kind ＞ of spare parts L/d 3, have two-way a flight of stairs outside columnar face, 20 ～ of diametical D ＞ 5Omm, material is fine steel. So this group of spare partses can use the same method that hold clip to undertake machining on identical machine tool. Spare parts 4 although I code is 6 is not 4, but it and above photograph of 3 spare partses is compared only much chamfer of a function, reason also but add up is in this kind is medium. (Way of region of code of law of 2) code region is right spare parts code is piled up each the data that the feature provides to a few kinds allow, serve as with it in group according to, will corresponding code similar feature relaxed limits. In what what watch 10-11a shows matrix of feature of spare parts a group of things with common features is expressed on, transverse number shows a yard, fore-and-aft number expresses to pile up a code that go up individually, in the graph " × " denotive limits calls a territory. Expressing 10-11a is a basis sexual feature matrix expresses many statistic data and the spare parts likeness that produce experience and make. Every spare parts piles up an encode that go up to fall inside this region each, delimit namely for same part group. If express the place in 10-11b to show 3 spare partses to be a group namely, or call a spare parts a group of things with common features. 4, become group of process to design a spare parts to classify group hind, formed treatment group, be aimed at different treatment group to make namely next piece agree with inter block of each spare parts become group of process. Does the work out have two kinds of: into the method of set technology? Spring ê of narrow languid  is appeared spring next useless Le ā ! ? one) the method that way of composite spare parts devises procedure according to the composite spare parts in hardware group calls way of composite spare parts, or appearance law. Composite spare parts is a part that owns the element of entire work surface that is the same as series part namely. It can be the subsistent a certain specific spare parts in hardware group, also can be the spare parts of a hypothesis, the essential factor of all work surface that because it included place of spare parts of inter block other,has, become set technology by what composite spare parts designs so, want to delete a few process that do not use for place of some spare parts or labor situation content from which only, can be inter block all spare partses are used, form the treatment craft of each spare partses. Graph 10-10 stated group of a hardware presses his the example that composite spare parts designs set technology. These 10 groups are comprised by 4 kinds of spare partses, group is his composite spare parts, the element of surface of 5 kinds of treatment that it contained place of 4 spare partses to have. This composite spare parts designed the basis to become set technology, the working procedure content that each spare parts place do not need is deleted on the basis that becomes set technology, got inter block the specific technology of each spare parts, see watch 10-12. (2) composite route law to be not swing tower kind spare parts, because its appearance is irregular, the composite spare parts that finds out it for some hardware group comes often very difficult, laws of afore-mentioned composite spare parts are so common only comfortable at swing tower spare parts. Spare parts of swing tower of and rather than, often use composite route method. Composite route law is in the spare parts classification becomes the foundation of the group to go up, make the craft line that is the same as series part compare, with inter block the craft course of the most complex part is a foundation, compare the craft course photograph of this course and spare parts of inter block other next, the working procedure that spare parts of other of every inter block needs and does not have in the craft course as the delegate, put on one by one, form finally to be able to satisfy what whole group part asks to become set technology. Expressing 10-13 is the example that composite route law designs set technology. 5, the actual application case that becomes group of treatment at present into basis of form of group production organization, is into group treatment the system like: of below 3 kinds of basic forms? 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The development on the foundation that decorates in type of a group of planes rises become group stand-alone to become group stand-alone, it is identical or an a few working procedure are similar spare parts a group of things with common features is centered on a machine tool to machine. Its characteristic basically is to be aimed at to finished product majority from semifinished product working procedure can be on the equipment of same kind finished work, also can use at be being finished only among them the treatment of some a few working procedure. Form of this kind of organization is the first form that becomes set technology, because similar spare parts centers treatment, batch increases, reduced machine tool settling time, achieved certain economic result. To more sophisticated spare parts treatment, when needing to be machined on much stage machine tool, the effect is not distinct. But the application as numerical control machine tool and machining center machine tool, especially flexible the development of carriage system, the constituent form that becomes group of treatment stand-alone becomes important again rise. 2.

Becoming group of production unit to become group of production unit is to point to the whole process of spare parts of the likeness on group or a few groups of one craft, finish by a group of corresponding machine tools, this groups of machine tools form a of the workshop production unit that close namely. Graph 10-16 states a production decorates a form unitly. It is comprise by 4 machine tools, achievable 6 hardwares group is whole the production of working procedure is unit. The main characteristic that becomes group of production unit is the manufacturing system that closes by composition of a few sort machine tool, complete the whole process of group or a few groups of one similar spare partses. It has particular independent character, have clear responsibility, raised utilization rate of equipment and installations, shortened production is periodic, simplified to produce a series of advantages such as management, be thought each enterprise is used extensively. 3.

Becoming group production line to become group production line is the form of more advanced organization that becomes set technology. What the main distinction of it and common automation line is flowing on product line is not a kind of spare parts, however a variety of similar spare partses. On automation line the metre of each working procedure agrees basically, its job process is successive and have rhythm. But to spare parts of avery kind of character, it does not pass each machine tool on automation line to machine certainly, the work that so it can process is more, craft suitable scope is bigger. CNC Milling