Cutting tool length compensates a function

After the cutting tool that uses different specifications or cutting tool wear away, can compensate an instruction to compensate the change of cutting tool dimension through cutting tool length, and need not readjust cutting tool or be opposite afresh knife. Next graphs state the deflection of direction of length of different cutting tool is measured. The picture is different the length of cutting tool slants 1 process designing of buy 　 　 format 　 to FANUC system, cutting tool length compensates an instruction to be G43, G44, G49, g43 is being compensated for cutting tool length; G44 loses compensation for cutting tool length; G49 amends a statement for length of cancel cutting tool. 1) the process designing pattern that compensatory of cutting tool length establishs: Z__ value is process designing value, h compensates the register number of the value for length. Slant buy quantity and slant buy order photograph is corresponding, by CRT/MDI operation face plate is set in beforehand slant in buy memory. When  uses G43, G44 to dictate, no matter use absolute dimension to still use increment dimension process designing, the terminal coordinate with the Z mobile axis that appoints in the program is worth, want with H (or D) the deflection quantity in appointing register has operation, the addition when G43, the photograph when G44 is decreased, regard terminal coordinate value as to undertake machining operation result next. G43, G44 all is mode code. When executive G43: Z is worth = Z instruction actually + (H × × ) when 　 carries out G44: Z is worth = Z instruction actually - (H × × ) in 　 type: H × × is the compensation of cutting tool length in showing number is × × register. 2) the process designing format that compensation of cutting tool length cancels: G00 (G01) 　 of G49 Z_ or G00 (G01) compensatory of length of cutting tool of ① of 　 of 2 notes 　 builds 　 of G43/G44Z_H00 　 to be only below mobile instruction ability become effective. ② has some of numerical control system, be like FAGOR 8055M, use length of G43 activation cutting tool to compensate (add / decrease operation to depend on register slants mediumly buy measures, negative) ; G44 cancels compensation of cutting tool length. CNC Milling