-- the leading sheep that the engine cam device that the laser workstation that always charges pattern can weigh to 200 pounds undertakes GE carries railroad making bid is global technology, also be railroad, carry, marine the equipment supplier in engine and mining industry. This company is in guest the ministry sets Faniyaxi on the west factory, in 10 years of in the past, this company led market of engine of whole derv electric power, current, there is 15 inside alive bound limits, the engine investment of 000 GE company is used, use at the drawing of freight and passenger transport railroad car. Railroad industry and other industry do not have what different; The profit of railroad depends on coming true with the smallest investment the biggest yield. In the begining, railroad industry endeavors to come true more the product of economy that ships consignee. This that is to say, need seeks rate faster, horse power is greater, also more economic motivation. So called " motivation competes " begin when railroad just appeared in fact. Inchoate engine is for the most part serve as motivation by vapour. With lumber, coal, or oil adds the water in heat boiler to produce steam, drive the piston that is linked together with drive lever thereby, drive lever drives the roll of the wheel. In the past, appeared in this kind of plan a lot of different implementation kind, the peak of development is to use car of large scale computer, it used the drive wheel of a lot of coupling, make implementation of vehicle tractive capacity of this kind of dynamic the biggest change. The maintenance of these machines specializations rate gets dreariness high. To 30 time or 40 time, people feels vapour motivation photograph generally to investment, had grown the oldest rate of profit. At the beginning of 20 centuries, people discovery uses electric power to come drawing is a kind more effective drive way. But, this need construction generates electricity fixedly equipment, still need to build tall erect to apply will circulate report engine is in. Electric current is used to make (drawing) motor roll, motor join arrives on axle. Every axle of engine needs to install motor, this makes the vehicle tractive capacity that uses in railroad larger, and the electric energy that waste is fewer. Come for years, a lot of contriver and manufacturer effort search equipment to choose plan. The development that conclusion develops the derv engine that outputs power light-dutily, high namely is gotten result. This makes manufacturer can rise they and dynamo coupling to be directly on engine drive drawing is motor. The costly fixed power station that before needing so, uses will realize electric power drawing. The manufacturer that GE company shows to already made engine of real electric power people the supplier of needs electric parts of an apparatus. Engine of inchoate derv electric power needs a lot of such equipment. This company and collaboration of manufacturer of a few motorcycle increase the size of power facilities, so that raise synchronism with what diesel engine outputs power. System of a when GE company still built him small-sized distribution and industrial engine will satisfy corresponding market need. In 20 centuries 40 time arrive between the fifties, industry of North America railroad realized the changeover to drive of derv electric power. To derv electronic motor car, it is cheaper to safeguard, it is more agile also motor-driven, shutdown time is shorter, and mutual between can connect, can undertake controlling from a position. The last characteristic quickened engine of motivation of North America vapour to exit historical scenic process here. Nowadays, individual engine can have enough output power and vehicle tractive capacity to pull move need two before or more steam locomotive (include respective aircrew personnel) ability helps the train that use. 20 centuries arrive the fifties during 60 time, the motorcycle manufacturer amount of North America decreases, although right now railroad is badly in need of higher horse power. And the experience that GE company used it to command a respect in engine electric power, begin to make the product line of engine of oneself higher horse power at the beginning of 60 time. The current set of engine is this industrial set level of an output power. Arrived seventies, managing fuel already became more more important than outputting power, GE company adds this one progress again. 80 time, the progress on power control makes dynamical competition position gets promotion again again. GE company always controls technical forward position in electric power, and borrowed engine production " the 2nd generation " engine of derv electric power, it built performance improvement, the new record of dependability and lifecycle cost. GE company has become the number one of the engine of derv electric power of great horse power to produce business. But the peak that this is not GE company. Drawing motivation is the most important part in engine, diesel engine of this GE corporation uses laser to label when gear will obtain dynamical heretofore, major diesel locomotive still uses electromotor of dc drawing style to provide power. Dc traction efficiency is quite good, safeguard handy, use safety, and need a dynamo to provide electricity only. The efficiency curve that sheds traction motor continuously however also can drop when the Rpm drops. Rotate speed is slower their efficiency is lower, easier overheat. Engine wheel becomes slower, the drawing effect of need is bigger. The minimum that the output power of engine needs to arise in traction motor " stall speed " place reach peak value. The 70 further improvement to 80 time " lowermost stall " reduce 8 to 9 MPH. When this speed, power of traction motor output is the greatest, efficiency lowest. What the loss of the attaint that because cross tropics,comes and efficiency limitted rate is farther reduce. Railroad and industrial supplier know the efficiency curve of AC motor is better, but it cannot control alternating current reasonably below the circumstance that moving. When 90 time, the computer control that people discovers to development of European railroad market rises and the progress that shed a technology continuously also satisfy the need of North America railroad. GE company communicates this kind engine of derv of high horse power of technology and superhigh of new generation efficiency and alternator union to rise, produced thereby at present the engine of forward position. In a few respects, the performance of these engine is better when floating rate is slow. The efficiency when high speed also rises significantly. At present GE company continues to innovate and improve it current range of products, include dc, communication and passenger transport engine. Before Nextpage makes an appointment with two years, the company begins to search new method to improve the method that makes more and more time number, in the factory that is located in city of guest city Grove, these mark are hit on plant of large gear of 200 pounds engine. At that time is to use old old laser makes bid implement, it is very cumbersome, when the operation make mistake easily, gotten mark discontinuous. Time number is when walking along 360 degrees along camshaft gear by laser, the clue that stipple gives is spent in every. It is used to the time between orgnaization of set gas a powerful person and crankshaft, such gas a powerful person arrive at it to be able to be opened when the top dead centre of the motion in cylinder in the piston. This process is perforative output engine of cylinder of power, 16- at whole 4400- enter gas and exhaust cycle. Cam device is in closely by bolt go up by the camshaft of crankshaft drive, camshaft orgnaization of a powerful person of drive take offense. Use crankshaft gear to press the permutation of degree, cam device also can use the time of set engine. Laser is in the quarter corrode on cam device, 360 come loose of the row markers notes line and sign of 36 numbers time is gotten in sculpture of rolled steel surface by laser, medicinal powder the mark of the row is go to 360 degrees from 0 degrees, every delimit for a time get offline, every 10 degrees of equalize number. Such, 360 come loose the mark line of the row and 36 numbers need undertake laser is carved. When GE company discovery makes number to the spare parts by old laser, deserted rate is the product 50% , because laser output repetition rate is bad,this is, at the same time as a result of the gear of processing 200 pounds are weighed, what the error that it brings brought about working place is abhorrent. Improper mark needs to be ground by systematic operator smooth, label afresh later. Telesis Technologies company (Ohio, circleville city) had custom-built project, after undertaking making an on-the-spot investigation to the need of GE company, offerred to build easy the system of Eclipse laser sign that assemble and unassemble (one class encloses CDRH) , it used to install the graduator on sharp slide. Large cam plant can come through crane handy installation arrives on graduator, such, want to press a button only, whole platform goes to cam device translation lock of an one cascade encloses a system inside, begin to undertake 360 degrees on the gear face of camshaft the sculpture that markers writes down. Before this, in old system, operator must raise lid of a metal, large cam device " carry " in clamping device, and still must a string of 1 go up in crane, lest destroy the galvanometric head of laser. Because this Telesis system was used but the circumgyrate stage of translation, installation is handy, without any block up. This system still included to use the smooth screen that ensures safety, the fixed device of cam device was offerred consult, can ensure the validity of gear direction. The Telesis system that GE company buys can think cam device and engine baseplate make number, this depends on fixed device. Because the manufacturing rate of engine is very low,such arrangement are, use the flexibility of laser, the company can undertake to gear the engine baseplate that needs to place again undertakes making bid making bid already. Engine baseplate by group by group hit a form to pile up a mark (express to produce information) , and the mark of gear uses static information number. This system that uses at present installs the Nd:Y of riverside of pump of stock 100W lampAG laser. The design of the workstation with custom-built place, gear makes bid undertake automatically, baseplate hits mark is artificial operation. The translation process that station of pushbutton type control and working status select switch can use device of control level slide and the laser energy that enter working place. The characteristic that assembles and unassemble from side makes it can undertake face plate makes bid, and this characteristic is being done not have in old system. This application need answers revolving stage to have number to the whole perimeter of cam device, accordingly, go to the lavatory to have the need when the mark of mark face plate in order to satisfy to install different clamping apparatus to bring. Lateral entrance is in the installation means that offerred cam unit not only, the installation that also offerred face plate to make bid / disassemble method. Make bid previously, unsettled engine when gear is placed to be in Nd:YAG laser is hit heading below on custom-built fixed device in addition, interface of machine of Telesis AMI(automation) software makes process designing and a form code scanning that use to load figure more simple, will scan the place with information proper park. AMI is OK still the picture file of the correct label of the number that to load place should make, such operator can assure the to load of right pattern, of clamping apparatus secure etc. Because Telesis software can support control of axial of 4 kinds of programmable, the to load with OK and handy operator is used at the right pattern of cam device or face plate, and circumgyrate stage, translation stage, and but process designing " Z " the position that the tool can be used to need by sudden shift. Of process designing and operation handy and OK make operator more recipient to the system, decreased to learn cycle greatly. Before about 18 months, GE company installed this to cover a system. The result that gets at present is very outstanding. April, device of more than 1800 cam is hit mark and without discard as useless. Attach most importance to at this o'clock especially should, because every gear wants to undertake examining with test clamping apparatus, the permutation of the mark that lists in order to ensure every come loose is correct inside the limits of 360 degrees of marks of gear and but reduplicative. As a result of need not again burnish and the operating costs that make bid again and save are already OK with 18 short months inside be likened to as a result of the accrual look that invest this system and gets from inside be run normally. The operation of the gear that make bid is as follows orderly; Operator is mixed in the to load on fixed device artificially find a place for a gear, pass safe smooth behind the curtain when them, operator receives signal of a be in order, the gear program in computer runs after. Gear by immigrant laser enclose inside, after positional put away, the door was shut automatically, laser makes the number of need in gear periphery. After mark has been hit, the door is opened automatically, gear from one class be sent inside workstation. To baseplate mark, through scanning a form code, slide is moved automatically to make mark part, the action of form code is to choose a proper design, the setting is in to appropriate central point from laser " Z " the height of form. Handlers can pass through side door artificial installation is individual or many baseplate arrive on clamping apparatus. After the door is shut, allow " begin to make bid " , software will rotate between baseplate of clamping apparatus adjustment and laser light beam relative position, undertake what what need hit mark to operate next. If use, is multiple clamping apparatus, software is opposite drive circumgyrate stage next make bid, till all quadrantal whole design on platform had been hit till. Perhaps give a person impression the deepest is Nd:YSystem of sign of laser of AG 100W Eclipse, the deepness sculpture that it can need in camshaft place and the exterior anneal mark that baseplate place asks keep stable in the process. The double process of Telesis system can satisfy GE company design and the identical goal that establish the innovatory solution that is helpful for a client. The article thanks Steven Belforte, inspector general of assistant of operation of train of Guilford Rail Systems and Ralph Villiotti, selling manager of district of the eastpart part of company of Telesis Technologies Inc. (Www.
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