The workshop that creates insular pattern independently produces systematic research
- Time:
- Click:52
Based On The Autonomous Manufacturing Island Model, a Plan Of Shop Production Management And Control Is Put Forward.
Key Words:CForeword of IMS; Autonomous Manufacturing Island; Job Shop Scheduling;GT1 changes as the development of the progress of science and technology and market demand, in small lot, much breed, high quality, date of delivery is short already made manufacturing industry gradually with low production cost apparent feature. This requirement enterprise can be made to the demand change of the market and user answer quickly, have taller flexible with ability of meet an emergency, enhance company competition ability thereby. Manufacturing industry base oneself upon at developing advanced production technology, offerred a lot of advanced production theory, for example: CIMS (CIMS) , collateral project (CE) , Ling Jie is made (AM) . The high automation that machines equipment reduces the manufacturing cost of the enterprise further feebly, and must go up in the foundation of measurable automation, use advanced manufacturing management pattern. Our country manufacturing industry lags behind relatively except equipment outside, more outstanding issue is manufacturing management pattern is backward, especially in the manufacturing management of workshop of type of production of small lot, much breed and control means, already became the obstacle that the company grows. Accordingly, reform existing workshop to produce constituent form, use the computer to assist manufacturing management and control method to make an urgent task. Be aimed at the situation that interference can produce at any time and place in the workshop, use MRP Ⅱ system to undertake the workshop produces management and control to cannot be achieved directly expect the result. The manufacturing management of workshop of type of production of a kind of small lot in facing, much breed and control program -- make an island produce pattern independently, become current a kind of relatively advanced scheme for selection [1, 2] . Making an island independently is to be in on group technology base a kind of workshop that development rises is flexible production form. While it is producing constituent form to undertake changing to workshop tradition, not blind pursuit machines the high automation of equipment, and the automation that emphasizes issueing iformation flow in existing equipment condition, its are main the feature is as follows: (1) closes the gender is a foundation with becoming set technology, one is formed to close relatively inside the island, independent production is unit; (Machine tool of 2) compatibility numerical control and general accuracy machine tool coexist, go after the automation that stock sheds not blindly; (The manufacturing preparation that 3) distributinging sex focuses the past style, plan and control instead are distributed, give workshop, production island power transfer to a lower level, it is with the person this, duty authority is trenchant, develop positive factor of the person adequately. (4) collect by nature uses computer technology to work technology design, production to plan and make a process organic ground becomes an organic whole repeatedly, the automation of iformation flow implements inside production island. The principle that 2 independence make an island produce pattern and the workshop that executive plan uses independence to make an island produce pattern, want according to the principle that becomes set technology, differentiate the spare parts to make a group of things with common features, finish only inside the island some is specific the treatment of spare parts a group of things with common features. Use network technology to plan operation of system of numerical control process designing, each CAPP inside production island, workshop the system to wait in net of the couplet inside workshop limits, build a workshop to produce management and pilot compositive environment. 2.
The article is opposite management of 1 workshop production and control principle system of workshop production management, control and the analysis that produce an island independently, discuss, it is with Tianjin hydraulic press fetterses (group) the pump housing treatment of limited company is setting. The pump that this company produces kind series variety is wide, its pump housing machines the small lot in belonging to, much breed to produce a type. The article machines the equipment condition of product line to fall in former pump housing, by independence production island produces pattern, put forward to be like the plan of machine tool distribution that the graph shows 1 times, inside this island the pump housing that finish machines an all sorts of needed process. Used plan of this kinds of distribution to improve stock to flow apparently. Graph if management of production of workshop of layout of machine tool of production island of 1 pump housing and control construction of system pursue show 2 times. Above all, the treatment task message that workshop production runs a system to accept make known to lower levels of MRP Ⅱ system or direct input process task information, transfer into from the CAD system that designs a section blueprint of spare parts technology. Next, the principle that basis of manufacturing management system becomes set technology spare parts classification, encode, and the circumstance according to spare parts classification, encode, treatment task allocation gives corresponding production the island. Finally, in workshop and corresponding production planning of process designing of technology design, numerical control, work is finished to wait inside the island, generate, print all sorts of craft documents. Still include corresponding database system in systematic program, if machine task database, workshop (production island) resource database, technology program database, wait in database of calendar of goods database, sort plan database, factory. Graph in 2 manufacturing management and control construction of system manage in workshop production and controlling tube-shaped part of computer science department, network operating system uses Windows NT Server 4.
0, workstation uses Windows 95, database system uses FoxPro 5.
0 For Windows, development language uses ＋ of Borland C ＋ 5.
0 For Windows. Graph 3 pursue for systematic network structure. Graph structure of 3 systems network 2.
The tone metric that 2 independence make insular exercise plan uses independence to make an island produce the workshop of mode, car intercrop course of study the plan discloses the work that makes an island independently individually to plan further, plan of workshop production operation and real time attemper the working change of systematic research, development makes insular work plan and real time attemper for independence systematic research, development. Its purpose is: (1) assures the time limit for a project, task that finishs place on time to accept; (What 2) improves production process is flexible and finish " urgent document " the ability of meet an emergency of the task; (3) reduces inventory. The tone metric that makes insular work plan independently is to point to. Nod the regulation of order through giving treatment, affirmatory covey machines the task, the tone metric that can use lien regulation to regard exercise as the plan criterion. Covey machines the task to undertake machining by the order of lien. After a task is finished, in the task alignment that machines a dot with respect to the next in bringing into its treatment course, the machine tool negative charge that makes point of below one treatment [3, 4] . The tone metric that to pump system the exercise that build an island plans criterion, adopt following lien regulation: (The task priority with 1) the shortest time limit for a project is top; (2) the task priority with the shortest handling time is top; (3) " amortize is least " task priority is top. No matter adopt regulation of which kinds of lien, "Urgent document " the lien of the task always is highest. Use afore-mentioned attune to spend regulation to be able to obtain a variety of exercise to plan program, after undertaking evaluating to afore-mentioned plan, the work that chooses plan of a kind of opposite first-rate to make an island as independence plans program. If make,interference situation produces inside the island, can generate new operation to plan to satisfy time limit for a project to ask afresh according to new case. 3 last words use independence to make an island produce mode to decompose the workshop the many mutual independence, independence that closes severally to make an island, be form of organization of traditional to the workshop production change. Original sectional dividing line was broken after making insular building independently, close together the connection of each link in producing a course, increased the delivery capacity of the workshop. In making an island independently applied computer assists exercise to plan a system to be able to shorten the production cycle of the spare parts, alleviate the bottleneck problem in production, increased a business (workshop) those who manufacture an activity is flexible with the ability of meet an emergency that changes to market demand. CNC Milling