Dependability and the seasonable sex that raises CAM program itself, efficient sex are to raise the Chongzhongzhi of machine treatment efficiency to weigh, the engineer needs those who have pair of whole process to optimize, cutting tool method is optimized and collision interference examination, machine quality and efficiency in order to ensure. Make the circuit that involves with respect to the mould, can divide roughly shed outfit of design of analysis, mould, CNC Machining, benchwork to deserve to try a model to wait for a few large segment for the model, among them to mould quality and delivery cycle these two industries compete for element, at present the biggest bottleneck inside course of study depends on CNC Machining link generally, and technology of the accident of time of CNC Machining link, treatment is sound, the reasonable allocation of machine treatment and electric treatment etc, return meeting influence to assemble the quality that tries a model and cycle to later period benchwork, accordingly, each enterprises make sure in effort treatment produces segment is to be able to accuse, craft is optimize, efficiency also improves ceaselessly. Of course, these all is opposite the demand of CNC Machining link is final end arrived on CAM process designing. Ensure those who machine link to be able to charge a sex of machine tool of all numerical control moving is to pass CAM order injunction to move, and itself of numerical control machine tool is 24h movement, this time is not changeable, accordingly, the efficiency that improves CAM program itself became first issue. Dependability and the seasonable sex that raises CAM program itself, efficient sex are to raise the Chongzhongzhi of machine treatment efficiency to weigh. Seasonable sex is to show process designing engineer takes the can have way of CAM cutting tool in time according to node authorized strength after designing data to create machine program; Dependability is to show the machine program that CAM place produces can ensure the safety in whole treatment process, put an end to completely bump into a knife, cut those who wait for a phenomenon to happen too; The efficient sex of the program is to point to reasonable weave treatment craft course, reduce the number that hold clip, reasonable use treatment strategy, choose appropriate cutting tool and corresponding cutting parameter according to different machine tool, reduce cutting tool to run a process to shake mediumly, undertake Cheng for nothing, improve treatment efficiency. After machine program is generated, the program that machine tool handlers offers according to CAM engineer is only (see a picture 1) go using knife handle and cutting tool to cutting tool storeroom, the cutting parameter that sets strictly according to CAM program sheet undertakes machining, the record processes the data that finish. The handling time that manufacturing administrator provides according to program sheet will control the actual in finished state of every every order, program. The core of these measure depends on CAM engineer the control to parameter of different material, cutting tool, knife handle and function of machine tool cutting and detailed cutting circumstance, if cutting parameter is not accurate, criterion everything is in condition of out of control. Of course, CAM engineer makes sure the knife handle on program sheet, cutting tool installs the accuracy that places length even, this asks CNC Machining program is only is arise automatically by software, the computation after was being undertaken colliding analytic by software comes out the length that hold clip. At present industry of treatment of the mould inside some course of study returns existence to machine parameter to handle sheet of personnel write one's own ticket, handwritten program by machine treatment, do not have knife handle perhaps machine tool collision analyses the length that hold clip to rely on range estimation to wait for a likelihood to cause treatment process out of control to perhaps reduce treatment of efficiency. And the program sheet that produces automatically through CAM is OK and complete because of,avoid program by artificial and handwritten and those who cause is factitious error, lest use wrong knife handle and the outfit of the cutting tool that choose a fault,place length. Graph of craft of process designing of CAM of 1 program odd give typical examples optimize craft of CAM process designing optimizing is to show pair of workpiece treatment are sequential whole line weaves link undertakes optimizing. To be not the mould component of regulation, for instance large bumper kind the big inclined top of the mould piece wait for a component, should rely on to invert normally treatment of many angle ability is finished, every means holding clip that machines measure, craft is fiducial the crucial factor that etc is the treatment precision that affects final part, accordingly, the precision of this kind of component often can become whole deputy pattern to make the key of periodic accident. In Japan some knows a mould factory, the treatment precision of this kinds of spare parts and movable mould can assure to be in 0.
03mm less than, benchwork reached the advanced state that install and does not deserve truly. These embodied technology of perfect CAM process designing, of course, this kind of craft is final it is to should rely on the information on CAM order only the title page of a thread-bound book to deliver a machine tool, the outfit that has work well is placed and machine fiducial establish. Make CAM program more efficient and current, numerical control technology gradually forward nobody are changed, the way of automation develops, the influencing factor that operates personnel is less and less, accordingly, only program itself is those who optimize, arrange solely, ability assures the precision of CNC Machining and efficiency. The cutting tool method that this asks CAM engineer arises to place above all undertakes optimizing handling, interfere a circumstance to undertake checking to all sorts of collision even. 1. Method of rough machining cutting tool optimizes processing to be in rough machining, can adopt normally fall in the premise that makes sure the spare parts machines precision, of the smooth suitable processing that has the oldest rate to cutting tool method optimize measure. In the graph 2 in, through observing the metabolic condition that actual F is worth in process of machine tool cutting, can see feed rate approachs the real numerical value that CAM place gives quite. And the NC program that place of common cutting tool method produces has a lot of deviate cases, the decelerate in cutting tool method, quicken frequent, cause treatment efficiency is low -- if the program is only,the process designing time that gives out is 10h, may effective treatment wants 13h. If speed of machine tool G00 is enough fast, what if the graph is shown 3 times,still can adopt is more smooth suitable cutting tool method, improve treatment efficiency. The high speed in software of graph 2 PowerMILL machines " Race Line " the contrast of cutting tool method that option opens around place to arise pursues the 3 G00 rate that are like a machine tool are quite rapid, can use the treatment strategy with more expensive efficiency of this kind of treatment 2.
Of method of finish machining cutting tool optimizing finish machining to optimize measure mediumly is to cutting tool method undertakes round horn is optimized normally, avoid sharp-angled to appear (see a picture 4) . Graph the round horn of method of 4 cutting tool is optimized 3.
The collision interference examination of the knife handle of knife handle, collision interference examination of the machine tool and head of machine tool main shaft is all NC program must measure. In this measure, it is the safety in assuring CNC Machining above all, assure to interfere a circumstance without collision namely; It is to choose the shortest cutting tool to machine next as far as possible much area, because how be no matter be a course,optimized treated cutting tool method, if increase the length of cutting tool, knife handle unprincipledly to undertake machining, sure meeting makes actual treatment efficiency is reduced considerably. Collision interference checks cent to be two parts: An interference that is knife handle and treatment spare parts is checked (see a picture 5) ; One is machine tool component (main shaft head) check with the interference that machines a component. Graph examination of collision of 5 knife handle is divided to head of machine tool main shaft is swing tower and as homocentric as main shaft structure, can simplify machine tool head into knife handle part to undertake interfering checking (see a picture 6) , if machine tool head and main shaft are different heart and the structure that has accident axis share, undertake be machininged adequately to assure to use power of short cutting tool, snickersnee sometimes, want to undertake knife handle collision is checked first, emulate into motion of travel machine tool again next (see a picture 7) . Graph 6 knife handle and the interference inspection plan that machine a spare parts head of main shaft of 7 machine tools and the interference that machine a component check process designing of last word CAM is strategy of a kind of process designing not just or of process designing method reflect, combine technological process of process designing method, treatment, cutting tool, knife handle to combine machine tool and cutting material however apply those who wait for a series of integrated knowledge is compositive. In real work, technical engineer must want to know these union of be sensible each other to rise, and be applied neatly, ability achieves good treatment result, raise a mould to machine quality thereby, shorten the production of the mould is periodic, for the enterprise development provides more strong support. CNC Milling