Machine tool of shallow analyse numerical control establishs the treatment application of mill cutting tool

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With establish milling cutter to process work on numerical control machine tool, OK and clear see cutting tool center moves course plan and workpiece outline not coincide, because workpiece outline establishs milling cutter motion to wrap subsidiary channels in the human body through which vital energy to form,this is. The knife that establishs the center of milling cutter to call cutting tool dot (4, machine tool of 5 coordinate numerical control calls a knife vector) , knife the motion of the dot the athletic contrail that course plan represents cutting tool namely. In CNC Machining, it is to press program of work out of workpiece outline dimension, still press a knife the program of work out of athletic contrail dimension of the dot, this should be handled according to particular case. In machine tool of complete function numerical control, numerical control system has cutting tool to compensate a function, can have work out program by workpiece outline dimension, build, after executive knife fills, numerical control system is calculated automatically, knife nod self-correcting to arrive on contrail of cutting tool motion. Use machine program of work measure work out directly, cutting tool wears away, change machine program is changeless, because this is used simple, convenient. Structure of machine tool of economy numerical control is simple, price is low, it is certain to have in producing a business have an amount. In system of machine tool of economy numerical control, if do not have cutting tool to compensate a function, can press a knife only the machine program of work out of athletic contrail dimension of the dot, this asks to give a knife according to workpiece outline dimension and computation of cutting tool diameter first the orbit dimension of the dot. Computational quantity is big, accordingly complex, and cutting tool wears away, change need recount knife the orbit dimension of the dot, machine program of new authorized strength. The cutting tool in system of machine tool of complete function numerical control compensates: 1.

Cutting tool of lathe of numerical control of compensation of cutting tool of numerical control lathe compensates a function to include compensation of cutting tool position and radius of cutting tool circular arc to compensate two respects. Appoint with T function in machine program, before T***x is medium two Xx are cutting tool date, two Xx amend order for cutting tool after, be like T0202.

If cutting tool amends order for 00, express to cancel a knife to fill. (The cutting tool position that position of 1) cutting tool compensates cutting tool to wear away or reinstalls cutting tool to cause changes, build, after position of executive cutting tool is compensated, its machine program does not need to weave afresh. Method is to measure the seat that gives every cutting tool to input designation memory inside, after the program carries out cutting tool to amend a statement, the real position of cutting tool replaced former position. If do not have cutting tool compensation, cutting tool moves from 0 o'clock at 1 o'clock, corresponding block is N60g00c45x93t0200, if cutting tool compensation is X=3, z=4, in stocking correspondence to compensate memory, after executive knife fills, cutting tool will move from 0 o'clock at 2 o'clock, is not at 1 o'clock, corresponding block is N60g0045z93t0202.

(When radius of circular arc of 2) cutting tool amends machine program of lathe of work out numerical control, lathe tool point of a knife is regarded to be one is nodded (P of fictitious point of a knife nods) , but actually the service life to raise cutting tool is mixed reduce workpiece surface surface roughness, lathe tool point of a knife by wear radius not big circular arc () of circular arc of Ab of point of a knife, this is sure to produce the appearance error that processes work. On the other hand, circular arc of point of a knife is located the position, the appearance of lathe tool also will produce an effect to workpiece treatment, and these can use compensation of radius of cutting tool circular arc to solve. The appearance of lathe tool and positional parameter call position of point of a knife, with parameter 0 ~ 9 express, p dot is dot of academic point of a knife. (Position of cutting tool of correspondence of date of compensation of each cutting tool compensates 3) knife filling parameter (X and Z value) compensate with radius of cutting tool circular arc (R and T value) in all 4 parameter, corresponding memory is inputted before treatment, show on Crt. In carrying out a process automatically, numerical control system presses the numerical value of the X in this memory, Z, R, T, the position error of self-correcting cutting tool and undertake radius of circular arc of point of a knife is compensated automatically 2.

Cutting tool of machining center, CNC Milling compensates the numerical control system of machining center, CNC Milling, cutting tool compensates a function to include the cutting tool such as compensation of cutting tool radius, included angle compensation and length compensation to compensate a function. (Radius of 1) cutting tool is compensated (the radius value of cutting tool of G41, G42, G40) stocks memory Hxx beforehand in, xx is memory date. After radius of executive cutting tool is compensated, numerical control system is calculated automatically, make cutting tool is compensated automatically as a result according to computation. Left compensation of cutting tool radius (the Zun Fang that G41) points to to process designing of cutting tool deflection machines orbit movement way, right compensation of cutting tool radius (what G42) shows process designing of cutting tool deflection machines orbit movement way is right. Cancel compensation of cutting tool radius to use G40, cancel cutting tool radius to compensate usable also H00.

In using, need to notice: Build, when cancelling a knife to fill, although use G41, G42, G40,the block of the instruction must use G00 or G01 statement, do not get use G02 or G03, when compensation of cutting tool radius takes negative worth, the functional crossing-over of G41 and G42. Compensation of cutting tool radius has B function and C function form of two kinds of compensation. Because radius of B function cutting tool compensates a basis this paragraph the program has knife filling consideration, the transition between insoluble block problem, the requirement handles workpiece outline round horn to transfer, because this workpiece is pointed sex of horny part technology is bad, compensation of radius of C function cutting tool can handle contrail of center of two block cutting tool automatically turn receive, can come completely according to workpiece outline process designing, because this is contemporary,machine tool of Cnc numerical control uses compensation of radius of C function cutting tool almost. Two block must have the follow-up that asks to build cutting tool radius to compensate block at this moment the displacement that appoints compensation plane dictates (G00, G01, the) such as G02, G03, cannot build correct cutting tool to compensate otherwise. (2) included angle is compensated (two plane of G39) intersect for included angle, generation exceeds the likelihood Cheng is cut too, cause machining error, can use included angle to compensate (G39) will solve. Use included angle is compensated (when G39) dictates, need to notice, this instruction is those who be not mode, it is only inside the block of the instruction effective, the ability after can dictating with G42 in G41 only is used. (Length of 3) cutting tool slants buy (G43, G44, G49) uses cutting tool length to slant buy (the change that instruction of G43, G44) need not change a course and compensates cutting tool length at any time, compensation stocks the memory that piles up an instruction by H in. The terminal coordinate that G43 expresses to the compensation in memory and program dictate is worth addition, g44 expresses to be decreased, cancel cutting tool length to slant buy can dictate with G49 or H00 dictates. Block N80g43z56h05 and in, if 05 memory median is 16, state terminal coordinate value is 72mm. The numerical value of the compensation in memory, usable Mdi or Dpl stock memory beforehand, also can use block instruction G10p05r16.

0 state the compensation in 05 memory is 16mm.

The computation of contrail of the cutting tool in machine tool of economy numerical control: System of machine tool of economy numerical control, if do not have cutting tool to amend a statement, can calculate only a knife the athletic contrail dimension of the dot, press this process designing next, perhaps undertake local compensation is machined. CNC Milling