The monitoring of superprecision
- Time:
- Click:131
- source:COCKRIEL CNC Machining
65 × 4.
The photograph of 65 Mm. It is OK that the camera lens in can magnifying the remote control of 10 times is opposite is used on camera one gets when focusing distance is 48mm 0.
× of 49 Mm 0.
The effective eye shot of 37 Mm, can undertake an analysis to diamond point of a knife thereby. Because camera lens can be without deviation ground enlarge, one resembled element onefoldly be being mirrorred 4.
65mm × 4.
The dimension of 65mm, because this achieved optics distinguishable spent maximum. Be through putting opposite camera is remote control likewise the glow diode in be opposite (LED) can increase the speed inside eye shot. The effect that does not suffer contamination and environmental element to be in treatment (graph 2) , whole apparatus installation is inside the housing with a compact structure that carries over cap. In addition, housing can be spent freely in 4 undertake directional, so that make,the error of formation of a imagine in optical light path is decreased the smallest. Graph the cutting tool that the effect that 2 optical in machining a process cutting tool measure a station to be able to be used at preventing pollution and outside ambient differs twice changes systematic cutting tool changes device has two kinds of different systems. One contains pneumatic clamp and the 6 axes robot of the electric spiral unit of tool carrier of diamond of OK and fixed Posalux can start cutting tool library, so that put down and take tatty cutting tool,give new cutting tool. On the tool carrier that can choose to hold diamond clip to cut treatment or main shaft of high speed cutting in a dig next, it is to change not only cutting tool, it is to measure the character that decides diamond point of a knife more, the geometry that so that secure the main shaft of bearing,decides in locally. The repetition that main shaft secures the definition that place of new to changing cutting tool reachs precision has conclusive sense. The adapter of authority of Posalux diamond tool that through using oneself design, the precision that hold clip can reach micron level, but the requirement that still cannot achieve precision so only, still need to have serious fixed position then. As replacement scheme, institute of Frauenhof production technology (IPT) developed a cutting tool to turn tower, be in the installation after it is integrated exceed accurate lathe to go up. And normally what treatment of high speed cutting differs is, to turn in cutting tool Daneibuke repeats the ground and height packs clip cutting tool accurately, used special comfortable the HSK 25 unit that distribute, so that be between cutting tool and machine tool,found an interface (join is nodded) . Use HSK device can ensure the outfit that obtains the pure machinery that is as high as 500nm below the case that has very tall tigidity places precision. And through additional integrated fixed bolt can prevent this plant rotate (graph 3) . The interior design with HSK special clamping apparatus is to be used technically at holding power of cutting tool of 6 Mm of × of clip 6, this is the cutting tool power that a kind of typical ground uses at cutting of diamond cutting tool. Graph 3 measurement unit are used at ensuring changing of the cutting tool of precision monocrystal diamond that accept rice level reachs when cutting tool wearing away appear randomly, the series test that passes experience sex well and truly will foreknow. Wear in contain especially the dig that structure of miniature of latent capacity of tremendous cost effectiveness, large area, surface machines cuts treatment in the process, can appear suddenly sometimes cutting tool ruptures to make whole workpiece discards as useless thereby. Measuring a station to undertake examining to achieve the high quality of exterior precision and figuration precision respect to assure regularly, after round of milling or dig cut treatment to end, want to suspend machining by formulary time-interval, send optics to measure a station to undertake detecting diamond cutting tool. The CCD camera that uses high resolution has identification to the state of blade of cutting tool cutting, at the same time affirmatory point of a knife is in the relative position that is standard world coordinate system with camera. In predefine wear away on the foundation of mark, the analytic software of camera is OK the program that oneself decide to whether need to start cutting tool to change, whether can affirmatory perhaps cutting tool still satisfy the quality that continues to machine next to ask. Change in need below the circumstance of cutting tool, the robot takes out cutting tool from inside the clamping apparatus of the machine tool, put its in cutting tool library, next a new cutting tool from same a cutting tool library is medium take out, secure its the clamping apparatus in the machine tool to go up. The control that passes a robot then sends optics to measure a station cutting tool afresh, so that be opposite,the new old position of diamond point of a knife undertakes comparative, computation gives a group of corrective data, the control that passes this group of data interface of a series to transmit a machine goes in the system. In the control system of the machine, will accessary referenced coordinate system has shift, so that be in same locally with be less than the repetition of 500nm precision uses a job of new cutting tool proceed. The precision of whole system basically depends on optics measures a station precision. The repetition besides camera and software of evaluation algorithm systems analysis besides precision, the mistake of smooth to machine coordinate system road is directional what may bring about geometrical dimension is lack fidelity and the wrong explanation of necessary corrective numerical value. But have the aid of a referenced sample book that oneself develop and an accessary calibration program can have camera essence of life decides to, error of angle the rest is only 0.
05 ° . The repetition of the place of rotor of radial main shaft that undertakes to the system with trial work appraisal is measured when place when precision is 3mm, corresponding error is less than 5nm, this is less than the resolution precision of CCD camera apparently. On the foundation of academic observation, total error is in 0.
Under 5mm. To have identification to the system, make the trial work that gave to have linear structure. Undertake changing to cutting tool after fiducial chamfer decides milling. Pure because change the account of the knife,the likelihood is measured in X direction piece 2.
The deflection of 3mm, measure in Z direction piece 4.
The deflection of 3mm. In the control system that accessary corrective value will transmit a machine automatically, so that be below the circumstance of same slot pitch and same feed deepness,continue the chamfer with other milling. Be opposite through using surface roughness of a Taylor-Hobson to check instrument structural deepness and the measurement that the structure is apart from, the horizontal way deviation that can measure a perpendicular direction deviation as a result of the 133nm that change a knife and causes and 178nm. On the passive and directional foundation of the component, cutting tool of the getatable before gets data exceeds order apparently changes systematic precision. The numerical value that reachs now is potential still again a few lower mix by passive preliminary adjustments section of active measure the base that reachs the position to mixed plan newly of corrective composition to make the complete automation plan that adopts cutting to machine technique to undertake exceeding narrow face machining first. The advantage of this plan depends on, be in and the machine exceeds cutting tool of accurate diamond cutting integratedly to character determines and change on systematic foundation, pass in process in inferior label to wearing away inside micron limits of width determine the monitoring that realized pair of cutting blade states, undertaking changing compensating to cutting tool with 200nm or taller precision when necessary. The method of the fixed air bearing main shaft in experimenting through clean technology and improvement, these numerical value still can be reduced. Frauenhof produces technical institute (IPT) the figuration mould of the complex large area that machine tool system can provide industrial group and scientific research bound to be used at making to have optical surface quality. This research work is in great project (Projekt Gross-Mikro, mark 13525 N) undertake inside frame, study federation through German industry (AiF) got German federal economy and technical department (BMWi) financing commitment, and got the support of network of European Excellence 4M. CNC Milling CNC Machining