MasterCAM software processes medium application in dimensional cam

  • Time:
  • Click:125
  • source:HAOYU CNC Machining
This is an article that comes from manufacturing front line, although the content of the article is not profound but have very much practical. Article author analysed dimensional cam tradition to machine means and the corrupt practice that use manual process designing to machine means on numerical control machine tool, use MasterCAM software to machine the whole process of dimensional cam in palpability of the circumstantiate on this foundation. The tobacco that make prosperous used a variety of cam mechanism in the cigarette aircraft equipment of company of mechanical and finite liability, have planar cam mechanism already, have dimensional cam mechanism again, among them, the treatment of the cam of crucial part space in dimensional cam mechanism is the difficulty of machining all the time. Groovy method uses dividing head milling or profiling law treatment, treatment difficulty is great, cycle is long, treatment precision is low, tall to operating worker technology level to ask, accordingly, outside need of spare parts of major space cam assist treatment. Since us after 20 centuries purchased numerical control machine tool 90 years, use the CNC Milling that provided numerical control dividing head to machined dimensional cam to replace traditional treatment method, improved the treatment precision of cam and efficiency greatly, but, the CNC Machining program of dimensional cam uses manual staff all the time, machine program of manual work out has a lot of drawback, main watch is the following now 3 respects: (1) process designing is complex, workload is greatly in the working plan of dimensional cam, the academic outline of cam or working outline dimension are columnar outside its spread out a graph to go up to give out with rectangular coordinates form, or list gives out. If press 1 ° the outline dimension cam is equational on 360 ° (it is such more commonly) , be about to input 360 coordinate to nod in the program, workload is big, make mistake easily. But sometimes coordinate of outline of the cam on blueprint can give out with equational form of every 10 ° , because interval is too big, data cannot be used directly, the member that need process designing undertakes to cam outline interpolation is refined, this is in manual process designing difficulty is very great, it is impossible even. (After 2) program revises disadvantageous program to had been made up, if in workpiece first try to the mistake appears in cutting a course or need a change, if arrange mill instead to go against mill, criterion the program needs readjust, adjustment process is very trival. (Precision of treatment of 3) cam outline is inferior in manual process designing, it is to use linear connective between dot of two coordinate in the program, namely linear interpolation means, as a result of the limitation of means of manual process designing, cannot get enough much coordinate dot, make the working outline of cam of the space after treatment and real profile have certain deviation, the surface has edge, not suitable slip, precision is inferior. Be machined in the light of the tradition and use the inadequacy that manual process designing machines, we make full use of CAD/CAM software, solved the treatment difficult problem of dimensional cam satisfactorily. Below, how do I use MasterCAM software to machine the problem of dimensional cam through specification of a specific example. If the graph is shown 1 times,cam job pursues, among them H of contrail of 20 roller center mixes Φ the relation between corner α gives out by list, if express,1 is shown. Express 1 corner α and the concern plan between H rising Cheng 1 cam job pursues one, dimensional cam machines a process 1.

Build treatment model to click desktop icon, starting MasterCAM software. ≈ of *174 of π of *D= of π of L= of circumference of the cylinder outside computational cam 546.

637, draw an upend line according to circumference L, if pursue,2 are shown. Will linear 36 divide into equal parts, each divide into equal parts nods correspondence, the watch one medium H is worth ordinal input, get 37 outline are nodded, if pursue,3 are shown. The scale batten curve that in using software, offers (Spline) command, ordinal click above get 37 are nodded, get the academic contour line of cam. Click the icon of the auxiliary menu area of software, graph layer is built in shooting the dialog box that give 2, in shooting the dialog box that give the setting is like the parameter that the graph shows 4 times, choose the academic outline route of cam next, slant contour line right buy 10mm of radius of a roller, after concealing other figure layer, get the working contour line of cam, namely the treatment model that we need, if pursue,5 are shown. Graph circumference of the outline outside 2 scale cam pursues 3 cam outline nods sketch map 4 slant buy commands parameter sets a plan contour line of 5 cam job 2.

Build way of rough machining cutting tool to reduce the idle stroke of the cutting tool in rough machining, if the graph is shown 5 times, the B dot that goes up in cam job contour line respectively and C point point are interrupted, so that only statified B of ― of rough machining A and C ― D paragraph. Ordinal in software click icon pushbutton, the system hints the choice is strung, click A ― B and C ― D respectively paragraph, build treatment outline. Click entree only area, play an outline to machine an operation to install a dialog box, a Φ is built below the page of label of cutting tool parameter of the dialog box 16 establish milling cutter, set corresponding parameter, if pursue,6 are shown. Click pushbutton, playing the runner shaft coming back that go out to install option of the setting inside the dialog box, if pursue,7 are shown. Choose page of outline parameter label, make corresponding parameter and option setting, if pursue,8 are shown. Click pushbutton, the number in rough machining of direction of X ― Y is set in shooting the dialog box that give, if pursue,9 are shown. So far, setting of rough machining parameter ends, click pushbutton, the cutting tool way that if the graph is shown 10 times,makes. The operation management in software implement midpoint hits button, do entity to emulate to method of rough machining cutting tool, emulation effect is shown 11 times like the graph. Graph parameter of 6 cutting tool sets a plan parameter of 7 runner shaft coming back sets a plan 8 outline parameter sets a plan 9 radial are statified treatment sets a plan method of cutting tool of 10 rough machining pursues 11 rough machining emulate the effect to pursue 3.

Build way of finish machining cutting tool ordinal in software click icon pushbutton, the system hints the choice is strung, the choice pursues 5 in contour line of cam of A ― D regards treatment as the object, click entree only area next, play an outline to machine an operation to install a dialog box, among them the setting of page of cutting tool parameter and rough machining are identical, to make the surplus when finish machining even, order of semifinishing machining knife is arranged before finish machining, for this, in outline parameter page value of setting Linerization Tolerance is 0.

025, value of XY Stock To Leave is 0.

1 make cutting tool way, part next two values are above the setting 0.

0005 and 0 make way of finish machining cutting tool. Ordinal click accuse an operation government implement, management implement in showed two operations that just built, if pursue,12 are shown. Click operation management respectively implement medium with pushbutton, make the cutting tool method of finish machining and plan of hypostatic emulation effect, if pursue 13 with the graph 14 are shown. Click operation management implement medium pushbutton, choice FANUC postposition handles an order, create the machine program that is aimed at numerical control mill, if the graph is shown 15 times, the program passes try out getting on a car, the cam working surface that treatment gives is very slick, achieve blueprint requirement completely, dimensional cam machines difficult problem to be solved satisfactorily. Graph 12 establish half essence and plan of finish machining operation method of cutting tool of 13 finish machining pursues graph of effect of method of cutting tool of 14 finish machining pursues 15 cam machine program 2, the last word passes what dimensional cam machines difficult problem to solve, reflected CAD/CAM software adequately the main effect in CNC Machining. Use MasterCAM software, we solved the treatment problem of a variety of complex space cam and planar cam in succession again. Machine cam in the workshop at present kind the spare parts is already nonexistent difficult, and we return the applied limits in technology of escalate software process designing, obtained first-rate result. Accordingly, the personnel that is engaged in CNC Machining understands in development only and master a kind or a variety of CAD/CAM machine software, try in practice reasonable apply, ability development digs the treatment latent capacity of numerical control machine tool, promote the craft between machine extra buses or trains capability ceaselessly, improve the quality of the product. CNC Milling CNC Machining