Mill of boring of 5 axes numerical control machining center processes medium application in oblique plane

The large cant that the article encounters with respect to the place in model production task kind if the spare parts wheres mill of boring of 5 axes numerical control finishs accurate treatment to undertake study on machining center, put forward and solved oblique plane kind the problem of treatment process designing of the spare parts. If why realize curve of accurate milling equation on oblique plane,discussed further, three-dimensional curved surface, carve characters on a seal the process designing problem that wait, when casting much axis to machine because increase,place what grow and cause a series of problems, broke through mode of groovy process designing thinking, the union that makes numerical control machine tool and CAM software perfect rises. 1, the mill of 5 axes numerical control with high-powered foreword machining center, numerical control system has dimensional coordinate department to rotate and oblique plane cutting tool compensates a function, it is thereby a few need oblique plane to machine and the spare parts treatment with treatment taller precision offerred a possibility. Man-hour is added on oblique plane, because coordinate is fastened in dimensional happening change, machine program work out is difficult, need to break through mode of groovy process designing thinking to undertake process designing, and undertake special processing to the program, the effective treatment of a combinative type product will discuss this issue. In the manufacturing process of type product classics regular meeting encounters this kind of spare parts, need to undertake stiletto on oblique plane, bore hole, milling appearance, perhaps be in same the need in second outfit clip is machined on a certain number of cant of different way and different rake, and there is taller look between every cant tolerancepublic errand requirement. The groovy method that machines this kind of spare parts is to pull move mesa of the head of a bed, rotational job to perhaps use built up fixture, if machine direction to perhaps machine the position to differ to need 2 times to hold clip, search afresh, treatment process is unusually trival, because install the restriction that places fixed position and machine tool itself, cannot assure the treatment precision of the spare parts. If be in the stage style treatment of T × × , the aperture on oblique plane is more, and abnormity side is bad to hold clip, fixed position is fiducial and bad, install clip to cause an error to accumulate for many times, the error was apart from to exceed 1mm by the side of aperture sometimes. 2, analysis of craft of oblique plane treatment and solution are the treatment problem that solves this kind of part, through fumble ceaselessly and be being improved of technique ceaselessly, combine a factory to have a machine tool, 5 axes are chosen to count machining center charging mill to solve this problem after. Place choosing machine tool is 5 axes 5 move repeatedly, outside removing 3 linear rods, still take circumgyrate workbench (C axis: - 360 ° of 360 ° ～ ) and place a head (B axis: 110 ° of 0 ° ～ ) two rotor, use control system to be FANUC160i, have dimensional coordinate department to rotate to compensate a function with oblique plane cutting tool. Machine tool kinematic diagram is as follows: From the point of the angle that realizes oblique plane treatment, the stiletto of the many cant of achievable in holding clip different way, different point of view, bore hole, the need of a variety of treatment such as tap, milling. Decreased to hold clip number, reduced labor intensity, shortened the production of the product is periodic, more important is the treatment precision that raised a part, assured the consistency of product quality. In order to grow 3 series some base kind the window treatment of the spare parts is exemple, following plan institute show the part: Want to machine this window, can see, the machine tool should finish to be on plane of XZ, YZ the movement placing a head of the interpolation of 2 axes linkage and a main shaft. Because want to make cutting tool and treatment face perpendicular, must make main shaft completes an action that place a head, have place a head, arrive with respect to drag in place long etc a series of much axis machines a problem. Because this wants to use the staff trick of much axis program to finish, process designing and machine tool debug difficulty big, the person that give to program and machine tool handlers raised taller requirement, in applying actually, considering the element that assures the respect such as machine tool safety, need imitate to machine a process, cut for nothing for many times, ensure the program is not had by accident, ability undertakes be machininged formally. In addition, the program algorithm of much axis is quite complex, need to consider to place grow the influence that waits for an element, in the light of some the machine tool must have specific aftertreatment, but the aftertreatment often differs with what dominate the niche because of algorithm, and the influence of computational stability respect, the program that passes software aftertreatment gain often satisfies the requirement of precision of part drawing paper hard in control precision respect. The analysis can see, causing the immediate cause that process designing difficulty increases is the occurrence of oblique plane, accordingly, if can make machine plane and oblique plane coincide, so this kind of problem the process designing problem that with respect to translate into a two axes machine partly, process designing difficulty is reduced greatly. Accordingly, can think of, the coordinate department that uses a machine tool above all changes a function (G68 dictates) will make machine plane and oblique plane coincide, length of the 2nd use cutting tool amends a statement (G432) , the knife is added to grow in the perpendicular direction of oblique plane, after be being handled through above, make oblique plane machines treatment of plane of problem translate into to solve, thereby process designing difficulty is reduced greatly. When if need at the same time,machining many cant, need to turn C axis arrives only C0 (the null of workbench, this null direction and main shaft swing way is same) , repass rotates to coordinate is fastened and add Dao Changlai to realize treatment. If treatment appearance is simpler, work through can finishing process designing by hand. Make thereby clip is held in numerical control machine tool in, implementation is in many cant, many labour, the treatment that changes a knife for many times becomes a possibility. Program structure is as follows: ％ N0100 O0008 (program name) N0102 M6 T1; (change a knife) N0104 G0 G90 G56 X400 Y200 Z260 B0 C0; (motion arrives reference point) ω of N0106 G432 X200 Z150 H1 B; (in perpendicular add a knife to grow at the direction of oblique plane) N0108 M3 S3000; (main shaft is turning) N0110 M8; (open cutting fluid) ω of N0112 G68 X188 Y0 Z60 I0J1 K0 R; (coordinate fastens changeover, ω gives priority to an axis from 0 turn to had turned with the place when oblique plane is perpendicular angle) ... ... N0200 G69; (coordinate department rotates cancel) N0202 G492 X200 Z300; (compensation of oblique plane cutting tool cancels, motion arrives safe place) N0204 M9; (cutting fluid closes) N0206 C α ; (C axis rotates, the N that α should machine for place the smallest angle of the vertical line of oblique plane and clip of C0 position place) N0208 G0 G90 G56 X400 Y200 Z260 B0 C0; (motion arrives reference point) N of ω of N0210 G432 X200 Z150 H1 B; (in perpendicular add a knife to grow at the direction of oblique plane) N of ω of N0212G68 X188 Y0 Z60 I0J1 K0 R; (coordinate fastens changeover, ω N gives priority to an axis from 0 turn to had turned with the place when oblique plane is perpendicular angle) ... ... N0200 G69; (coordinate department rotates cancel) N0202 G492 X200 Z300; (compensation of oblique plane cutting tool cancels, motion arrives safe place) N0204 M9; (cutting fluid closes) N0204 M30; (the program ends, return program head) 3, discuss what sophisticated inclined plane machines to discuss the 2nd issue again further, can see, although oblique plane treatment came true in afore-mentioned discussion, but be confined to go up in oblique plane stiletto, bore hole, tap, milling by the simple appearance that makes with circular arc point-blank, process designing of handiwork of bureau be confined to. If milling form is more complex, if be on oblique plane milling equation curve, three-dimensional curved surface, carve characters on a seal, how should weave again program? Although these similar figure are in on plane when treatment, manual process designing also cannot be accomplished, be finished only through CAM software. Carry the careful research of pair of machine tools and CAM software, fumble the way that gives process designing of a software to combine manual process designing will finish the efficient way of the treatment process designing of this kind of spare parts. The analysis is knowable, in process designing of common 3 axes mill, cutter shaft direction is as perpendicular as XOY plane from beginning to end, but when the upend direction with main shaft original deviate, cutting tool plane happens when tilting, the program that how can just make be generated on XOY plane moves correctly on oblique plane. The analysis is knowable, although coordinate department happened to rotate, but if make on XOY plane place becomes a figure (the form that A) wants to machine on the relative position in former coordinate department and cant (B) and new coordinate department keep mediumly consistent relative to the position, can apply in oblique plane treatment directly in the program that creates on XOY plane so. Place an influence that uses oppose graph position according to the machine tool, the analysis is knowable, constructive on XOY plane when, should make the graph is with process designing origin rotate the center is anticlockwise rotate 90 ° (rotate angle should be decided according to the particular case such as the machine tool) , make the graphical position in CAM software and the position that machine actually keep consistent so. Through add and revising program head and order remaining part, increase coordinate to tie changeover and compensation of oblique plane cutting tool namely, make software process designing and union of manual process designing rise, came true to be on oblique plane thereby milling equation curve, the treatment of the aleatoric and complex form such as three-dimensional curved surface, carve characters on a seal. Through machining test and verify actually, the license that confirms this method reachs the journey in machine tool function applies process designing of this kinds of method to be able to realize the random on aleatoric cant inside limits the treatment process designing of complex form. Next graphs are the treatment example that machines three-dimensional curved surface on the cant of 52 ° : 4, conclusion is in the manufacturing process of product of this factory type, applied this method to solve multinomial treatment difficult problem for many times, for oblique plane kind the treatment of the spare parts offerred a brand-new settlement way, raised oblique plane not only kind the treatment precision of the spare parts and treatment efficiency, and bring bigger economic benefits for the factory. The place on put together is narrated, the main advantage of method of this kind of process designing reflects in below a few one respects: (1) solved oblique plane kind the CNC Machining problem of the spare parts (the precision problem that 2) solved oblique plane to machine (3) simplified the process designing problem that oblique plane machines (4) was solved in random of the milling on oblique plane the treatment problem of complex form (the change that 5) increased oblique plane machine program to control train of thought of precision problem process designing, make not only process designing person there is updated knowledge on mode of process designing thinking, and developing machine tool property, the utilization rate respect that increases numerical control machine tool also produces not little effect. This treatment train of thought puts forward, solved a variety of type products the treatment of relevant spare parts and treatment precision problem, assure to promote the function of overall product to offer further, the treatment that is type product moves toward digitlization to make due contribution stage by stage. CNC Milling