Shallow analyse affects cutting tool blade to grind the element of geometrical precision

001mm, the whirl of axis of A, B precision can be achieved 0.

001 ° . A axis (main shaft) can place hold cutting tool to undertake 360 ° rotate, 20" of graduation precision ± , ISO 50 of main shaft taper, the biggest rotate speed is 40r/min. B axis can rotate 300 ° , of axis of 3 emery wheel, rotate speed of emery wheel axis can amount to 2000 ～ 6000 turn / cent. This machine tool is 5 coordinate linkage, the cutting tool that be ground by blade can be finished after holding card each angle (before horn, hind chamfer of horn, helix) machine or repair grind, apply to blade to worry all sorts of bit (if gun getting, a flight of stairs is gotten,wait) , knife of milling cutter, Huo and reamer kind product. The drive part of grinding machine of Saacke5 axis tool uses German Ximen subsystem, part of CNC numerical control uses French NUM1600 system, blade grinds software to wrap by Switzerland NUMROTO is offerred, graduation of the initiative position that its explore the cutting tool length after measurable outfit blocks the system, diameter, tooth, tooth reachs knife chamfer helix angle, after using CNC to feedback to undertake mathematical calculation to the computer, blade of automatic input cutting tool grinds a program, ensure the blade of cutting tool grinds precision. Deserve to have on automatic tool grinding machine explore device automatically, the sensitivity that its measure a head and the geometrical precision that install precision to affect blade to grind directly (precision is explored to be set commonly when blade is ground for 0.

001 ～ 0.

002mm) , can saying to explore the foundation that automatic blade grinds device since automatically is the key that cutting tool blade grinds. 5 axial linkage of Saacke company can satisfy the production of a variety of cutting tool and the precision that grind again to ask from the high accuracy that uses tool grinding machine. The installation precision of 2 emery wheel is to the influence of precision of cutting tool geometry in the emery wheel database that program software includes, precision of emery wheel installation should rely on database of the manual input after measuring surely really, accordingly, the accuracy that diameter of the flange length of emery wheel axis, emery wheel and emery wheel angle measure is the element that blade of influence cutting tool grinds geometrical precision. Graph 2 flange length is measured changing truly definitely program or change before emery wheel axis must accurate the flange range that measures emery wheel axis comes La of length of flange of lateral of emery wheel grinding or Lb(see a picture 2, a, B is the differentia that uses in emery wheel grinding or face) respectively. Flange length measures do not bring about likely truly definitely: Width of edge first flank and requirement not agree with; Cutting tool breaks bits chamfer position to make mistake; A flight of stairs gets length of a flight of stairs not to accord with a requirement; Occurrence mistake of position of the horn after cutting tool. Emery wheel diameter measures D(of diameter of not accurate emery wheel to see graph 2) measures forbid or cause likely: Width of edge first flank and requirement not agree with; Blade dip is wrong; Knife chamfer appearance and its deepness and requirement not agree with; Part of a flight of stairs of getting of a flight of stairs comes on stage (part of a flight of stairs is not clear root) . Emery wheel angle measures or input R(of angle of not accurate emery wheel to see graph 2) measures or cause likely when the input is not accurate: Width of edge first flank and angle and requirement not agree with; Cutting tool breaks bits chamfer position or angle mistake; A flight of stairs gets point of view of side of a flight of stairs not to accord with a requirement; Position of the horn after cutting tool or angle produce a mistake; Knife chamfer appearance and requirement not agree with. 3 emery wheel wear away to affect what any grinder put in emery wheel to wear away to what cutting tool blade grinds precision problem, tatty emery wheel will affect the precision of the cutting tool that be ground by blade badly. Because be versed in the treatment boy or girl friend that has grinding machine is automatically,a few kinds go up even the cutting tool of norms of 100 kinds of different breed, all sorts of cutting tool have its complex character again, automatic tool grinding machine installs emery wheel impossibly to explore compensation device automatically like automatic and special grinding machine, because this gave to program personnel and handlers to bring the problem that has challenge sex -- , measure emery wheel, modification order in time, or the program compensation function in use software package undertakes compensating at any time, in order to lower the influence rate that emery wheel wears away to grind precision to cutting tool blade. Additional, often should examine what repair the appearance that grinds cutting tool and its geometry precision to whether accord with design requirement, till change,emery wheel undertakes proper nap emery wheel. Of the emery wheel when blade grinds wear away to basically have the following kind: Emery wheel diameter wears away after emery wheel diameter wears away, measure with emery wheel diameter not accurate and same, make the likelihood be repaired to grind cutting tool to appear the following problem: Broach kind cutting tool first flank increases; Blade dip is wrong; Knife chamfer appearance and requirement not agree with, deepness is insufficient; Part of a flight of stairs of getting of a flight of stairs comes on stage (part of a flight of stairs is not clear root) . Graph angle of 3 emery wheel wears away the angle of emery wheel wears away to be increased with pointed horn R similar, but differ somewhat again (3) seeing a picture. Normally round horn R is even on radius increase, and emery wheel round horn wears away is odd side wears away commonly, accordingly, cause long grind an error to also can differ somewhat. Continue to use angle tatty emery wheel to cause likely: Broach kind share of cutting tool horizontal blade goes thorn; Cutting tool breaks bits chamfer position or angle mistake; A flight of stairs gets part of a flight of stairs to come on stage or part of a flight of stairs of round horn R() not clear root; The horn after cutting tool or angle are wrong; Knife chamfer appearance and requirement not agree with, deepness is waited a moment not quite. The work out of 4 control program and compensation repair the blade with the long-term effect that grinds precision to grind practice proof to cutting tool, because each dimensional point of view of cutting tool are very mixed, the design that machine tool software surrounds is reasonable it is the key that makes sure blade of automatic tool grinding machine grinds precision, it decided already but the sort that blade grinds cutting tool and norms, the difficult easy rate that decided to program again and can develop a gender. To program repairs the influence that grinds precision to be in the design that software surrounds to cutting tool, because manufactory home is right the special sex of the program and the demand that open a gender are diverse, the difficult easy level of to program is different also. When work out program, besides should have knowledge of relevant cutting tool major (function of the cutting principle that is like all sorts of cutting tool, cutting) outside, even certain cutting tool blade grinds experience. In addition, the blade that the level of software also is restricted and decided cutting tool grinds limits and blade to grind geometrical precision. For example: The gun that we use gets software to belong to the software with special very strong sex, it gun of the knife that grind sheet plunges a knife of be confined to. Because its maneuverability is good, process designing is accordingly easier, need to input a gun to get diameter, bougie only the cutting parameter such as the horn after width of fore-and-aft exploration position, first flank, first flank is achievable the knife that a kind of gun plunges grinds to program to work. And TE software package is relative to older bit kind program software, can weave with it different the broach blade that gets a tip grinds a program, like common Shuang Ren blade of broach, S gets blade of awl head, all sides to get 6 awl head, blade to get awl head, center getting to reach broach of all sorts of a flight of stairs to wait. When work out program, besides wanting to choose to get pointed figure, the fore-and-aft exploration seat that still needs to input broach diameter, bougie, get a tip each faces and a few data such as length of each dimensional angle, a flight of stairs, machine tool parameter, emery wheel parameter, through be in imitate is sectional go up to measure and revise parameter, cut the effect to undertake editing to concerning parameter according to trying. It is good to although the open sex of this software package compares odd knife gun,get software much, but work out broach kind blade grinds a program to still get kind of order than gun of staff odd sword several times more complex. Graph the versatility of 4 software is stronger, to program is more complex, the factor that affects cutting tool appearance and geometrical precision is more also, want all sorts of pair of elements in to program process so especially the parameter of implicative sex undertakes considering integratedly in the round. The to neuter, chamfer deepness that if be in,groove should consider not only when grinding edge chamfer, angle, consider cutting way even, because groovy wall also is of edge at the same time before horn, one of main factors that it is function of cutting of decision cutting tool (4) seeing a picture. Although Saacke5 axis is automatic,program compensation repairs the influence that grinds precision to cutting tool the machine tool precision of tool grinding machine is taller, but of the machine tool after the course is used for years spent with the position of bougie at 0 o'clock can produce change, need is solved in time with program compensatory method. The issue that can use a program to compensate a method to solve has: The machine tool changed at 0 o'clock; Bougie position changes; Emery wheel wears away error; Emery wheel mounting error; The program installs an error. Of course, should from go up at all solve afore-mentioned problems, besides support the program is compensated, when still answering to changed at 0 o'clock in the machine tool undertake in time maintaining, change in time to already wore away emery wheel, the geometrical precision that makes sure blade grinds cutting tool reachs integral mass. Although cooling fluid cannot make immediate impact to the geometrical precision of cutting tool,5 cooling fluid repair the influence that grinds precision to cutting tool, but the exterior surface roughness that can immediate impact is repaired to grind cutting tool, and the cutting performance that the surface roughness of edge is affecting cutting tool directly again. Saacke5 axis tool uses high pressure to cool when grinder grinding, and the water that used in the past base cooling fluid quality is not stable, make machine tool interior easily rustily, reduce the precision of the machine tool, affect the geometrical precision that cutting tool blade grinds secondhand at the same time. In recent years, we use low burning point, low viscosity when cutting tool blade grinds treatment (almost as identical as water) oil radical cooling fluid, prevented a machine tool effectively not only rustily, those who reduced cooling fluid change frequency, improved work efficiency, and the surface roughness cost that reduced cutting tool blade to wear the face, the cutting function to raising cutting tool, assure to trim the function with ground quality to rise better. The place on 6 epilogue put together is narrated, the factor that affects cutting tool blade to grind precision is very much. Grinding machine of Saacke5 axis tool belongs to high accuracy machine tool, it is different from general grinder already, also compare average special grinding machine on to program and mode of operation complex, because this asks handlers should have taller machine tool to operate a level not only, and should substantial cutting tool knowledge and cutting tool blade grind experience, ability gets very good cutting tool blade grinds the effect. CNC Milling CNC Machining