CNC coordinate grinder promotes exact pattern to create character

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  • source:BERO CNC Machining
Machine precision to raise mould part effectively, promote exact pattern to create character, river science and technology introduces CNC coordinate grinding machine east, mould of things of cure of quacksalver of professional treatment production essence, nicety is much model the exact pattern such as the antrum mould, exact pattern that fold a layer. Coordinate grinder is the tall accurate machine tool that is out of shape with eliminating the heat treatment of material for the purpose development rises, use exceed hard abrasive to grind, use new technology of grinding of high speed, efficient, high accuracy, it is the crucial equipment with contemporary and accurate treatment, the most significant superprecision. Its feature is: Coordinate grinder system of 2 coordinate workbench (accurate coordinate is + accurate coordinate surveys a system) + system of grinding of high accuracy coordinate, undertake grinding to the material such as hard steel of tall hardness, temper by dipping in water. It is OK the aperture with grinding position precision and dimension very tall precision, and all sorts of accurate outline appearance. System of CNC coordinate grinding and average grinding machine are different, especially workpiece does not turn, grinding moves and circumferential motion taking a knife is finished by the revolution of wheelhead and rotation, walk along a knife to move to cover motion of canister fluctuation stroke to finish by wheelhead up and down. Wheelhead is executive coordinate grinder advocate motion -- the component that grinding moves. Wheelhead has high frequency and dynamoelectric wheelhead and air turbine wheelhead by drive means two kinds (if pursue 1) . Those who press direction of emery wheel axes is different, cent is perpendicular with the level two kinds, it is perpendicular commonly, of the level call horizontal wheelhead. Basically use grinding keyway, square Kong Huo to have inside the workpiece of edges and corners and straight groove and so on, OK also the outline of inside and outside of grinding spare parts. Graph the typical form that the grinding of grinder of coordinate of typical form CNC of 1 high frequency and dynamoelectric wheelhead and treatment of grinding of grinder of coordinate of CNC of air turbine wheelhead processes includes: 1, round hole grinding (aperture of straight aperture, alveolus, taper hole, blind) ; 2, planar grinding; 3, square aperture grinding; 4, circular arc grinding; 5, groovy grinding; 6, spherical grinding; 7, the grinding of polar coordinates aperture; 8, dimensional polar coordinates the grinding of aperture; 9, grinding of outline of accurate inside and outside. After increasing to grind all sorts of awl orgnaization, accessory and numerical control technology, the application of coordinate grinder had greater progress, can the appearance of grinding workpiece does not have limitation almost, special apply to treatment form is particularly complex with precision very tall of all kinds mould is mixed all sorts of accurate and mechanical spare partses. The grinding machine of Hauser S45 coordinate that river science and technology uses at present east has the following characteristic: 1, high speed: Rotate speed of dynamoelectric grinding emery wheel can amount to 2500 ～ 90000RPM, pneumatic grinding can amount to 160000RPM. 2, high accuracy: The smallest feed is 0.

0001mm, resolution is 0.

00001mm, whole journey of fixed position precision 0.

002mm. 3, full closed-loop control: Use 6 rods of GE/FANUC (X, Y, Z, U, W, C) system of numerical control of 4 linkage complete closed circuit. 4, have muti_function measure systematic MSS, Auto-Size to wait. 5, use exceed hard abrasive to grind: Wait like CBN emery wheel. 6, the machine tool provides tall stiffness, good aseismatic sex, heatproof stability. About the measure form a complete set of the machine tool Dong Jiangke ability uses electron of world top level to measure a tool, its accuracy is read to decimally hind 3 digit (class of M extraction ü ) (if pursue 2) . Gauge block and needle compasses arrive accurately also Dai class (if pursue 3) . The tall accurate machine tool of such form a complete set and measure can make the semiconductor that exceeds nicety shape directly mould, also be production nicety mould and exceeded exact pattern to provide strong safeguard. Graph 2 accuracy are read to decimally hind 3 digit pursue standard of craft of treatment of Nextpage of 3 measure, plug guage and the machine tool that safeguard use plan tall nicety must have rigid treatment craft standard to reach defend use plan, for this, dong Jiangke ability combines accurate and plastic mould to make the character of treatment according to the function of CNC coordinate grinder, made " standard of craft of coordinate grinder treatment " and " coordinate grinder is used safeguard and the program is written " the file is how-to with normative treatment, the craft engineer follow-up that appoints full-time is relevant technicality and Baconian summary experience. The grinding technology essentials of the grinder of coordinate of CNC of grinding technology essentials of CNC coordinate grinder sums up as follows: 1, grinding process is more complex than process of other cutting treatment, the cutting process that wears bead includes to slip brush, plough, cutting 3 kinds of condition. Process of emery wheel grinding is cut by scintilla, stable grinding and beautiful Qing Dynasty of reduce internal heat grind 3 phase to comprise. 2, the flexibility in grinding process is out of shape and plasticity is out of shape bigger, it is method of other cutting treatment is scarcer. Quality of heat of the dimension precision that it is affecting treatment work directly, surface roughness, grinding, surface and grinding efficiency. Stretch area change must understand to be plasticity area and plasticity area change to be the critical condition of cutting area in using. 3, compare with common cutting treatment, in general cutting treatment tangential force is gotten to muscularity than the law much, and the characteristic in grinding is a law Xiang Li is about tangential the 2 ～ of force 4 times, grinding system stiffness is very big to its influence. Grinding force by cutting force and attrition force two parts are comprised. When kibble, give priority to with cutting force, when essence of life is ground, give priority to with attrition force. 4, grinding is a kind of bad news can machine a method, 20 times bigger than other treatment method. The element to treatment effect that must notice to grinding is heated up and raise temperature. 5, the dimension that the spare parts should assure when essence of life is ground, circularity and outline precision. A) : Want to make spare parts circularity rises, above all semifinished product cannot have had big circularity and coaxial to spend an error. B) : To assure to machine the final measure precision of workpiece and surface roughness, want to note the change of grinding force, the meeting when new old emery wheel changes increases its instability greatly, for this, need often changes the number that emery wheel reduces workpiece of emery wheel grinding. C) : When the curvilinear appearance grinding such as cam outline, in cam the emery wheel workpiece of concave and convex place contacts the change of area contrail, can cause the change of grinding force, cause grinding to arise to be not stabilized, form appearance error. Control very hard on cam grinder, and use on coordinate grinder insert the method that grinds law and motion of control workbench figuration, can reduce the effect of afore-mentioned elements greatly, raise treatment precision thereby, this also is one of advantages that grind treatment figuration mould with coordinate. Grinding of grinder of coordinate of CNC of principle of job of treatment of grinding of CNC coordinate grinder machines working principle to be as follows: 1, grinding a Kong Shi, by the side of the job of emery wheel line of axes of deviate planet main shaft radius of a workpiece is worth, outside the roll of the emery wheel in grinding process besides itself, still must circle planetary main shaft to have revolution. In the meantime, enlarge offset in grinding process even, undertake minim feed, will gain the careful control of aperture with this kind of means. 2, when planar grinding, planetary main shaft does not turn commonly, and workbench along X to or Y comes true to shift. And the feed of emery wheel still is used enlarge prejudicial radius, undertake minim feed. 3, in outline grinding, CNC coordinate grinder is to use bit of position control formula (also say to nod grinding surely) , the shift that uses coordinate of X, Y namely makes the coincide of the centre of a circle of radius of the circular arc on center of planetary main shaft and workpiece, the prejudicial slide that uses lower end of planetary main shaft comes dimension of radius of minim feed control. Coordinate of successive contrail numerical control is ground on, undertake grinding with Fan Chengfa. 4, in taper hole grinding, use combined-type radial feed and treatment of perpendicular collocation taking a knife. The means of grinding of a few kinds of commonly used grinding means coordinate has CNC coordinate grinding machine commonly 3 kinds: Namely grinding of radial feed formula, cut pattern grinding and insert the grinding that grind a way. 1, radial feed grinding. The characteristic of this kind of means is to use the circumferential face of emery wheel to undertake grinding, when feed every time emery wheel is made to workpiece along the directional photograph of prejudicial radius a few mobile. This is a kind of the most familiar grinding pattern, master the most easily, application is the accordingly widest. When using emery wheel of bond of pottery and porcelain, can repair very as a result of emery wheel surface level off, because this can obtain very tall dimension precision and very low surface roughness. The defect of this kind of means is, because emery wheel gets larger extruding force, every time feed is lesser, calorific amount is larger, want to longer reduce internal heat spends Qing Dynasty to rub time, apply to grinding all sorts of inside face of the cylinder outside Kong He. 2, cut type grinding. Means of this kind of grinding is to use the end panel of emery wheel to undertake, also call end panel grinding, feed of axial of edge of the emery wheel when feed. Because quantity of heat is mixed,cut bits not easy eduction, grinding condition is abominable, to improve grinding condition, the end panel of emery wheel should revise dished figure. When grinding, also want special caution, lest feed causes emery wheel blowout greatly too. If do not have absolutely necessary (wait like face of grinding stage shoulder, spherical, end panel) , do not use this kind of means commonly. 3, insert the grinding that grind a way. While this kind of means is grinding round of fast fluctuation to move, around move the outline of the spare parts that be ground undertakes grinding. Its characteristic is to be able to use bigger cutting deepness and the quantity of heat of generation is lesser, at the same time its are compared to the jumpy requirement of emery wheel low, reason is special apply to the occasion that using gush plating emery wheel to have grinding outline. In alveolus grinding, because must use gush plating emery wheel, because this uses this kind of means often the surface roughness that attainable specific diameter comes to lowly to feed formula grinding, but compare with photograph of emery wheel of bond of classics amendatory pottery and porcelain, the surface roughness of this kind of means wants a few bigger. River science and technology applies case to be after the basic function that mastered coordinate grinder and function east, river science and technology produces a branch to be below the assistance of Technical Division and guidance east, make the precision that gave a batch to approve international center stage successfully mould and exceed exact pattern, help ASM company make an aperture and pitch precision be in 0.

The semiconductor inside 002mm limits exceeds accurate pattern plate, wait like Rnner Strip, Cavity Strip, Cull Strip. Nextpage pursues 4 quench the A after processing board grinding pursues 5 quench the B after processing board grinding pursues fixed position of embryo of die of 6 temper by dipping in water falls a groovy grinding graph grinding of aperture of the 7 fixed position that heat up chew pursues 8 hot chew seal glue aperture grinding to pursue of precision of 9 freeboard dimension and pitch precision CNC Milling CNC Machining