The application in process designing of UG online cut and skill

1The line cut module of UG of module of UG line cut is included without flotsam interior a few treatment such as cut of cut, the form inside workpiece, appearance cut and mouth outline cut child module, if pursue,1 is shown. The user can need according to treatment, agile choice among them or a few stature module, the line cut that can complete a part machines the task. These module basically satisfy a spare parts machine demand to the line cut of 4 axes from 2 axes. Online cut machines module of treatment of cut of line of graph 1 UG in, some workpiece antrum (big ratio of pit-depth to pit-diameter) need is used without flotsam cut means model the material inside antrum is corroded entirely in order to complete treatment. Pass module of UG line cut inside the cutting tool contrail that without flotsam interior cut means generates, put in unreasonable cutter track sometimes, the horn that be like a needle, this asks we undertake controlling to taking knife kind. Use the program that without flotsam interior cut module creates however the means that its take knife kind is software acquiesce, uncontrollable, revise. 1.

Program of cut of line of work out of module of mill of the 2 artful plane that use UG because discomfort of existence of module of line cut process designing, after the characteristic that analysed module of UG planar mill, the decision uses this module to weave line cut does not have program of flotsam interior cut, achieve control line cut to take the aim of knife means. Graph 2 be planar mill module child module face plate. Graph module of planar mill of UG of module of 2 planar mill is the module that the planar part that is aimed at a spare parts undertakes 3 axes are machined, its characteristic is milling treatment happens on XY plane, the action of Z axis basically is next knives, carry knife and avoid in treatment let the function such as clamping apparatus. Means taking a knife is had agile, easily the advantage such as control, the kind taking a knife that can take has only way, roundtrip kind, follow workpiece appearance, mill appearance and mixture treatment is waited a moment, if pursue,3 are shown. The working plane of line cut machine tool is XY plane, through line cut silk the motion on 2 dimension plane completes the treatment of the spare parts. If can be when process designing of module of UG planar mill, restrain Z axis next knives and carry knife, can generate contain XY only the file of cutting tool contrail of two coordinate. Pass an aftertreatment to be able to create the numerical control program that applies to line cut machine tool, enhanced what line cut process designing takes knife kind to be able to charge a sex greatly so. Graph 3 planar mill walk along knife means to pursue the 4 appearances that are a typical spare parts, need is used now without flotsam interior cut means undertakes ellipse inside model the treatment of antrum, if use module of UG line cut directly inside without flotsam interior cut means undertakes machining, if the cutting tool contrail that generates pursues 5 in orbit is shown 1 times, pointed horn exists inside orbit, the machine tool changes suddenly in pointed part part Xiang Rong is easy and cause impact. Graph 5 in orbit 2 with orbit the 3 cutting tool contrail that are two kinds of when generate through planar mill means different kind taking a knife. From these 3 kinds contrail taking a knife can see, it is better to use the cutting tool contrail of planar mill to have can charge a sex, and generated program is more flowing, without pointed horn, won't cause the impact of the machine tool consequently, assured the treatment precision of the spare parts and the service life that prolonged a machine tool better. Graph workpiece of cut of 4 allusion molded lines pursues module of 5 lines cut generates cutting tool contrail 2. Process designing of numerical control of machine tool of entrance line cut machine tool of cut of some entrance line has my unit very tall fixed position precision and repeat fixed position precision, suit to machine exterior surface roughness the demand is high, dimension precision controls strict part. It is with the to program of this machine tool now exemple, to program of introductory line cut is general measure. Generated cutting tool contrail is being narrated before is cutting tool the rally that a series of positions that pass in machining a process kindle, those who say for the knife, mix with definite pattern state a method to record these knives the file of positional information calls a knife file. In UG, these files are general with Cls (Cutter Location Source) file format is saved, the knife was recorded not only inside nod an information, still contain the other treatment information such as rotate speed of cutting tool information and feed, main shaft at the same time. Dao Weiwen cannot use at numerical control machine tool directly, should make numerical control machine tool identifies these knives, should become its change the machine tool to be able to know other NC code. Graph 6 for Dao Weiwen the flow chart that is changed into NC code. Among them postposition transaction file includes two, one is the file with Tcl ending, another is the file with Def ending. In UG aftertreatment, will define machine tool type and the form that make NC code in postposition processing through these two files. Through postposition processing editor POSTBUILDER is founded and compile two afore-mentioned documents, make its accord with specific machine tool standard. Graph 6 knives file postposition handles flow chart 2.

Standard of 1 process designing and postposition processing are weaving before the postposition processor of this machine tool, want to understand the program standard of this machine tool above all. The process designing standard of machine tool of this line cut is like below a few characteristics, (1) program begin serves as serial number with N, the number from the back from 1 in the future with 1 increase by degrees stage by stage; (2) the program is nodded the first paragraph as the fixed position of the machine tool with G00, this bit is indispensable, and can appear in a program only. Undertake again next linear (G01) , circular arc (G02 or G03) the interpolation that wait; (3) in the program each paragraphs with semicolon " ; " end; (4) value of I of circular arc center, J is the vector that points to the centre of a circle from circular arc start; (5) move when paragraphs of whole program after finishing, finish this block with M02. 2.

2UG aftertreatment work out is after the process designing that understood this machine tool is normative, the job below is founded according to this standard namely, editor to it corresponding postposition transaction file. When entering postposition to handle finally, input the postposition transaction file that found, dao Weiwen the NC code that changeover is this machine tool. The POSTBUILDER of editor of postposition transaction file of UG advocate the interface is shown 6 times like the graph, select kind of corresponding machine tool, edit the relevant content such as serial number of machine tool journey, program and program ending according to the standard next, save found content, POSTBUILDER makes two afore-mentioned files automatically (.

Tcl, .

Def) , OK in postposition processor applying. Afore-mentioned line cut knives that use planar mill module to generate when the file is undertaking postposition is handled, need to weave additionally postposition transaction file. Among them machine tool type chooses to be 3 axes mill, when undertaking postposition is handled otherwise, the system can make mistake. The others content has an edition according to process designing standard, revise can. Graph editor of 7 postposition transaction file 2.

Above of example of 3 process designing states an intention 4 medium spare partses are exemple, use planar mill module to if pursue,be founded 5 in orbit 2, generate a knife file. Found, compile aftertreatment document and save. The NC code that through postposition processing generates is as follows, this NC code is above the machine tool move good. N1 G00 X0.

0Y1.

;N2 G01 X0.

02;N3 G01 X0.

03; .

.

.

N259 G02 X18.

545Y-47.

884I-54.

147J152.

257;N260 G02 X0.

0Y-49.

I-18.

662J155.

49;N261 M02;3.

The last word uses UG software to undertake process designing of line cut numerical control, shortened to program time, rose to machine efficiency. Pass normative to line cut numerical control analysis, founded postposition transaction file and apply at postposition processor, dao Weiwen the NC course that is changed into the machine tool to be able to identify. In the meantime, undertake through planar mill module line cut does not have the work out of flotsam cut program, abounded line cut program to walk along the diversity of knife means and maneuverability, became the complement with beneficial module of line cut process designing. Carry out a proof, use this kind of method to undertake line cut to program obtained very good economic benefits. CNC Milling CNC Machining