The manufacturing efficiency that uses the fishbone crankshaft product line that arrange to produce the every treatment equipment that forms product line adequately at present, improved the productivity of entire line greatly thereby. Because layout is had flexible with open sex, for product line henceforth extend reached flexible constituent production to create essential condition. Express crankshaft of 1 each phase to machine craft to compare working procedure level one 1990 ～ 1998 level 2 1999 ～ 2002 level 3 2003 ～ 2007 AF010 mill mill of two end panel mill of two end panel two end panel, get AF020 of geometrical center aperture to get quality center aperture to get mill of quality center aperture to locate face AF030 mill locates face mill locates side car vehicle pulls axial head, one axis journal gets pass an imperial examination of head of axle of journal of connecting rod of the mill inside AF050 of neck of connecting rod of the mill outside flange of car of neck of main shaft of the mill inside flange and AF040 of main shaft neck vehicle of car of flange of car of AF060 of oil duct aperture pulls 2 ～ neck of 5 main shaft cleans AF070 axle beforehand first, improved the productivity of entire line greatly thereby. Flexible it is product line with the layout of open sex henceforth extend reached flexible constituent production to create essential condition. Mature increasingly in automation technology today, industrial automation process had reached an unprecedented height. How to set out from the angle with manufacturing system best whole, all improve manufacturing efficiency with the best will in the world, already more and more make modelling company place take seriously for great majority. Well-known, the treatment technology that crankshaft treatment process involves included basically all sorts of woof of machining. Its development and change basically are reflected be versed in each in machining a process on, next stuff kind, the change that kind carries between working procedure and in how balancing the treatment metre between each working procedure, in order to achieve the biggest production efficiency. Crankshaft treatment craft is compared from the watch 1 can see, the development of crankshaft treatment craft and change basically are reflected in rough machining part. Above all, develop level from level 2, car - the car pulled a machine tool to replace inside mill machine tool, treatment efficiency and treatment quality get rising. From level 2 development arrive level 3, as a result of semifinished product quality rise, quality center was replaced by geometrical center when machining fixed position aperture; As a result of outside the breakthrough of mill technology, the car was replaced by machine tool of the mill outside more flexible high speed when machining connecting rod journal - the car pulls a machine tool. The place on put together is narrated, we see not hard, rise from what to 2007 the treatment craft of crankshaft produced level and semifinished product quality as the machine tool 1990 have greater progress, its machine efficiency to also have rise considerably, but machine working procedure and change without essence. Crankshaft is versed in each on, means is carried to compare between next makings and working procedure 1, level is in level one, crankshaft is versed in each on, next makings use artificial means; Carry between working procedure use a car to carry a form. Its advantage is: The machine tool is decorated agile, can make full use of existing field resource; In the meantime, manufacturing organization is relatively agile, but the stop production loss that better land avoids to be caused as a result of equipment malfunction. Its defect is: Strength of operation staff work is great, manufacturing efficiency is low, cannot get used to large quantities of demand that estimate production well. 2, level 2 in level 2, crankshaft is versed in each on, next makings use automatic grasper; Carry between working procedure use a snake model decorate walk the car is carried automatically (the 1) that be like a graph. Its advantage depends on: Intensity of operation staff work is low, manufacturing efficiency is tall; Can the demand that better land gets used to large quantities of quantities to produce; Reflected adequately " one flows " manufacturing concept. But it also puts in certain defect: The machine tool decorates tigidity, manufacturing site utilization rate is low, cover an area of an area big; Cannot avoid the stop production risk that creates as a result of equipment malfunction; Lack of product line layout is flexible, carry out harder " program, distributing carry out " modern program designs a concept; Because cannot avoid to carry an orgnaization automatically,the each other in producing a course awaits, the capacity that creates every treatment facilities cannot get be developinged adequately. Graph 1 snake arrange a plan 2 fishbone decorate a watch 2 process capability ratio relatively second of metre of line of couplet of metre of stand-alone of amount of facility of machine tool of content of watch working procedure / root root / year second / root root / year mill two end panel 14770 drill quality center hole 160275, 737. Face of 5 mill fixed position 132 cars flange pass an imperial examination of 14670 axle head 159 cars vehicle pulls one axis journal neck of 2-5 main shaft 160275, 737.
575220, 590 cars vehicle pulls neck of 1+4 connecting rod 144376, 006 cars vehicle pulls neck of 2+3 connecting rod 144376, 006 drill oil duct hole 158285, 246 clean beforehand 155300, 80555 quench 158285, 24658 temper 158285, 24660 boil press alignment 159285, 246 turning stop push end panel to reach boil pressure 152328, 206 grind main shaft neck 160284, 44575220, 590 grind 1+4159289 of connecting rod neck, 226 grind 2+3159289 of connecting rod neck, 226 two end panel are machined 161271, flange of head of 21761 grinding axis 145367, 65060 dynamic balancing 160275, 737.
5 polish 152318, 15952 clean eventually 155316, 63655 measure in group 145387, 00045 eventually check 139446, 53839 e.g. , if some crankshaft product line machines metre to regard as with only station machine tool produce can calculate according to (if express 2) , criterion we can reach easily, year of productivity of this product line it is 270 thousand / year. But, because this product line is used,go up automatically, next makings device snakes connection, and abhorrent meeting causes the treatment metre of every machine tool go up to wait for makings phenomenon with next paths, the 75s/ root when the 60s/ root when bringing about entire line metre to be machined by stand-alone directly increases couplet line to machine, entire line is produced can by 270 thousand / year fall it is 220 thousand / year, produce can loss near 19% . 3, level 3 in level 3, crankshaft is versed in each on, next makings use automatic grasper; Those who use fishbone shape to decorate is carry to walk between working procedure the car is carried automatically (the 2) that be like a graph. Its advantage depends on: In maintained the snake premise that decorates an advantage to fall, better land overcame the snake inadequacy that decorate; Machine tool layout is had flexible, cover an area of an area little; Can come true well " program, cent pace is carried out " concept; On, latency time is not had between next line working procedure, manufacturing efficiency is tall; Can fall in the circumstance of ceaseless machine, undertake changing conveniently model production, make entire line is changed model time drops 60%(is opposite at the snake model decorate) . Because have flexible location, accordingly, product line does not have stop production risk. Notable is, need to strengthen the care and maintenance to carrying a car automatically at ordinary times, because carry a car automatically,be one of main bases that make sure safety of whole product line moves. The place on put together is narrated, the manufacturing efficiency that uses the fishbone crankshaft product line that arrange to produce the every treatment equipment that forms product line adequately at present, improved the productivity of entire line greatly thereby. Because layout is had flexible with open sex, for product line henceforth extend reached flexible constituent production to create essential condition. Meanwhile, a kind carry a system automatically what update -- annulus robot system, with its precision of expensive work efficiency, expensive work and photograph of as linear as the tradition transmission equipment are compared to work space save and the advantage such as good augment ability is being made by engine stage by stage company place acknowledge, believe to be in before long in the future " annulus robot system " regular meeting resembles now " fishbone decorate " the first selection that becomes broad company euqally. CNC Milling