Machining coordinate is brief introduction

The definite plan that machines coordinate department department of coordinate of treatment of 1 gear base is the coordinate department that shows with certain treatment origin is fiducial place to build. Treatment origin also calls program origin, be after showing the spare parts is installed to had been placed, corresponding process designing origin fastens medium seat in machine tool coordinate. In machining a process, the treatment origin position that after been place according to workpiece outfit, determines and order demand have numerical control machine tool machining. Process designing personnel is when work out program, should pursue according to the spare parts only appearance is OK origin of process designing of make choice of, establish numerical value of coordinate of department of process designing coordinate, computation, and the real position that need not consider work semifinished product to hold clip. To treatment personnel, should holding clip workpiece, when debugging a program, process designing origin changeover is treatment origin, machine the position of origin certainly, set gives in numerical control system (give out namely origin set is worth) , after set machines coordinate to fasten but according to cutting tool current position, decide the coordinate with bit more initiative cutting tool is worth. When treatment, the coordinate of each dimension is worth workpiece is opposite of at machining origin character, ability of such numerical control machine tool fasten the position to begin to machine according to accurate treatment coordinate. Graph 1 in O2 is process designing origin. 2.

The set method that machines coordinate department one: Direct in department of machine tool coordinate set machines origin. Graph department of 2 treatment coordinate sets example: On the vertical CNC Milling that deploys FANUC-OM system the setting machines origin 03, if pursue,2 are shown. (1) the setting of origin of process designing of 　 of choice 　 　 that machines coordinate department is on line of work axle center and the node of the end panel end workpiece. Set dimension of workbench working face to be 800mm × 320mm, if workpiece holds clip,approaching the point between working Taichun, determined the position that machines coordinate department, its machine origin 03 be in be apart from O1 of machine tool origin to be place of X3, Y3, Z3. And X3=-345.

700mm, y3=-196.

22mm, z3=-53.

165mm. (2) set treatment coordinate fastens an instruction 1) G54 ～ G59 machines coordinate for set is an instruction. Coordinate of a workpiece is G54 correspondence, the others with this analogize. Can be in the parameter setting page of MDI means, set machines coordinate department. If be opposite already the treatment origin O3 of make choice of, its coordinate is worth 　 　 X3= -345.

　 of 　 of 700mm 　 Y3= -196.

Z3=-53 of 　 of 220mm 　 　 .

165mm 　 is set in G54, if pursue,3 are shown. Make clear in the set in numerical control system a workpiece machines coordinate. If setting page pursues 3. Graph 3 treatment coordinate is a setting 2) G54 ～ G59 is in machine program when appearing, chose corresponding treatment coordinate department namely. Method 2: Through cutting tool initial drop comes set treatment coordinate is. (1) the origin that the choice treatment coordinate that machines coordinate department fastens but set is on the dimensional site that the some that has initiative place relative to Yu Dao accords with treatment to ask. What should notice is, switch on the mobile phone when the machine tool after winding reference point, no matter cutting tool moves which, numerical control system is foregone to its position. That is to say, cutting tool is bit more initiative be known drop. (2) statement of department of set treatment coordinate pursues coordinate of 4 set treatment fastens 　 G92 to machine coordinate for set is an instruction. When G92 block appears in the program, be in the position currently through cutting tool namely namely initial drop comes cutting tool set treatment coordinate is. The process designing format that G92 dictates: After this block of G92 X A Y B Z C moves, with respect to the basis cutting tool is bit more initiative set machine origin, if pursue,4 are shown. From the graph 4 in can see, with G92 the setting machines coordinate department, also can regarding is: In machining coordinate to fasten, decide the coordinate with bit more initiative cutting tool is worth, keep this coordinate cost into format of G92 process designing. Example: In the graph 5 in, when A=50mm, b=50mm, when C=10mm, try out G92 dictates set machines coordinate department. Set block is G92 X50 Y50 Z10. Graph coordinate of 5 set treatment fastens application CNC Milling CNC Machining