Graph 2 workshops equipment supervision member the appearance that makes preform work in examination aluminium, of the automation of buy of tone press fitting that this workpiece uses in aerospace industry " light-off is produced " the manufacturer that allows different trade also can have number after the worker comes off work not. As the aggravate that the market competes, whether the assembly that reduces ceaselessly time becomes a factory to be in market competition the key of get victory. The has much tray system machine tool that by loose riverside machinery the place that make provides can satisfy a factory to shorten not only the demand that assembles time, and the requirement that still can satisfy an user to be close to 0 breakdown to move. Rotate speed of main shaft of machine tool of series of graph 1 MAM is between 12000 ～ 20000r/min, use loose cattail president Mr George McNab of company of servo MAC Machine expresses: "Our workshop advocates automation is produced all along. " the Baltimore company that is located in American Maryland city from begin to use much tray system 22 years ago milling machine of unmanned guard horizontal, and still begin to carry out without a few enterprises at that time " light-off " type production. To MAC company character, this is them the first time the attempt executes this kind to specialization production, such, assemble time to be become whether satisfy the crucial seat that be carried quickly and wins gain. For utmost shorten assemble time, the 4 axes that this company chose place of company of loose cattail machine tool to offer and machining center of vertical of system of 5 axes much tray and horizontal machining center. These equipment are supplied by the company of Methods Machine Tools Of Bury that is located in Massachussets city, the exclusive entrance that this company enjoys loose cattail company to be in North America area counterpoises (graph 1) . "The affiliation of these equipment promoted the competition ability of the factory greatly, make us OK any relevant treatment domains obtain sortie successful. " Mr McNab says. The order of the industry such as aerospace, national defence and medical treatment takes MAC company respectively about 60% , 20% with the workload of 15% . The rest of the category that workload belongs to high-tech, it is commercial user more. There is one share in the component that this company produces is space navigation the mechanical part that takes place to use, still having a few is the component that is used on battleplan with etc motor of submarine of such as of a few places, missile, rocket is mixed jet aircraft seat. In addition, still include surgical and embedded content and diagnostic medicine place to need component, business satellite and aircraft. Its much product is to be aimed at native market, also having one part business nevertheless is to come from Europe, middle east and other area. "Producing the spot is very busy, have near 200 projects all the time undertaking, " Mr McNab says, "Want to satisfy the technology that light-off manufactures to ask nevertheless, the treatment facility that has high quality solely is insufficient still, have skilled able-bodied person even. " the assembly that MAC company has a batch of major machinist, the can attend much tray product line work when the first order gets ready, arrived the 2nd order can a lot of more relaxed, 78 workshops need 60 workers to be able to run normally only. The main job of these workers monitors automation system to be produced in order to ensure the 3rd order in unmanned guard is all namely can of in an orderly way undertake. In the 168h time of a week, this factory has 90h is to use nobody to turn production. Before this, when system of switch much tray, because use, is onefold or machine tool of vertical of double main shaft, and the tone trial assembly with longer need of this kind of equipment matchs time, because this does not suit nobody,turn production. "After transferring to use much tray machining center, with photograph comparing is managing before the operational ton of 50% , what these operations point to is all operations that process need of whole assembly place inside a cycle. " Mr McNab say. He appreciates Methods company very much, because Methods company is near 25 years ago,provided machine tool of the first loose cattail for its. This company offerred after this in succession again service of all sorts of equipment, professional technology, process designing and all sorts of support that carry out nobody to change manufacturing work place to need. Use much tray equipment to machine small lot task to save the core competition ability that assembles time to had become MAC company thereby, its finish the work and won fame to also bring about other plant on the other hand order with taller difficulty to glide somewhat. Even if is case of client small lot, low even the requirement that 0 public errand machine this company can be satisfied, because be built between this MAC company and its client,had stabler concern. "The issue that we must judge a likelihood to appear beforehand and in press switch on the mobile phone significant error correction action is taken before pushbutton. " Mr McNab expresses, "We must not be absent make a the most perfect part for a short while. " the temperature control room that this among them contribution has one part to should be attributed to skilled worker and high quality, the quality management standard that this company implements is defect rate of 1 million each products does not exceed 1000. That is to say, every produce 1000 work, can have a defective goods only at most (graph 2) . However, mr McNab emphasizes: "Implementation moves close to perfect production, processing cost and on time the one part that the focus that the everybody such as delivery pays close attention to normally also is whole craft merely, because satisfying increasingly strict client requirement,yield of square look unfamiliar just provides challenge sex most. Improvement produces can finite in the final analysis as a result of what machine speed and cause or assemble time to decrease " . Accordingly, the factory uses series of newest loose cattail 13MAM 4 axes with 5 axes machining center plans light-off production according to actual condition. Behave among them best is MAM72-63V machine tool, machining center designs this 5 axes to machine the large, component that has intricate geometry figure only, its can get used to the biggest Ø24. 8 × H17.
The workpiece of 7in(Ø630 × H450mm) , can bear the weight of weight of the greatest work is 770lb(350kg) . This company still provided MAM72-35V machine tool, this is an a bit a few tinier 5 axes machine tool, the size scope that its process work can achieve a diameter greatly most 13.
77in(350mm) , tall 9.
44in(240mm) . Deserve to go up again corresponding H.
Machining center of Plus-300 series horizontal formed a complete product line. These equipment can work to also can assemble product line independently already, the much tray system that loose cattail company supplies can arrive from 2 32 tray random chooses. This also means a factory to be able to machine 32 different spare partses on a machining center. "Through removing the effect that interferes area, the configuration of MAM machine tool can let an enterprise realize the automation between different spare parts to produce. " Mr McNab expresses. Specific for, when machining special spare parts or place its are secured axis and tilt workbench setting is OK the tigidity that utmost reflects tool and clamping apparatus, even if is the spare parts that processes special rule form, be like the biggest diameter 24.
Treatment requirement also can be satisfied when the workpiece of 8in(630mm) . Additional, the factory still must rely on CAM to emulate way software completely to complete the treatment process of loose cattail machine tool, compensate the error between CAM software input and machine tool treatment at the same time. This is not blind to carry the data that CAM system outputs to the machine tool through aftertreatment program, MAC company can use software to undertake an analysis, amend, optimize and imitate method of 5 axes cutting tool, all these operations are observe in 3D environment, complete perspective and do not have those who seam the implementation below compositive condition. Such conducing to discover a problem before production, accomplish a nip in the bud. Regard a workshop as foreman, mr John Leonard is certain this covers software to executed light-off type production smoothly to the factory to have very big help effect. "Today, a jockey person can understand the potential problem that whole production works and forecasts every treatment link correctly beforehand, it is even before switch on the mobile phone. " Mr John Leonard says, "This decreased to assemble time greatly, offerred a very precious competition advantage to us. " the adaptability of the technical support that Methods company provides and loose cattail machine tool and automation process capability, these conditions simplified greatly the manufacturing technology of MAC company. Emulation software of much tray system and CAM is OK and managing the assembly of 85% time. In addition, whole technological process simplified about 75% , basically the craft amount that through reducing treatment place of a spare parts requires realizes this. Apparent, successful ground executive automation is short-term, tall what compound treatment can obtain utmost is managing. "Nobody change treatment to let a factory come true to use fewer worker finishs two or 3 fall. " Mr McNab says, "Can reduce the labour force of 30% effectively so, let us have competition ability more thereby. Let us have competition ability more thereby.. CNC Milling
CNC Machining