Measurement technique of complex Baobi lamina studies

1mm, foliaceous body face contains damp table, angle of damp stage space is daedal, the dimension of need is much, and tolerancepublic errand asks to father; Blade space size twist of Dajuxie space is big, xie Shenbao, outline of blade molded lines spends tolerancepublic errand small and to change tolerancepublic errand. Blade dimension is measured 1 measure what coordinate fastens to build pair of complex Bao Biyan end rabbet lamina, design and those who measure is fiducial and general degree of face of the end that it is swallow rabbet, when measuring can will measure coordinate department to be built directly the face is spent to go up in the rabbet, also can use measure measure, will measure coordinate to tie move to measure on. (1) without measure measure. Did not measure when providing, spend face and end panel to be with the rabbet fiducial, will measure coordinate department to build go up in the rabbet, in blade rabbet for two times on the face, measure 4 to nod respectively, tectonic 2 plane, what computation spends a face twice is medium cent face regards the Y axis that measures coordinate department as direction and Y axis direction at 0 o'clock, computation spends a face twice cross a line, measure the X axis way that coordinate ties, hand in the node of line and rabbet end panel to be X axis direction at 0 o'clock, the rabbet spends face of the cent in the face to part to for two times value of face translation H, with for two times the face intersects two translation line, two parallel are tectonic one plane serves as those who measure coordinate to fasten Z axis at 0 o'clock. If the graph is shown 1 times,blade rabbet spends area structure. (2) measure measure. End rabbet lamina measures complex Bao Biyan having design principle is: Come back move screw bolt, measure an underside fixed position piece drives blade rabbet underside to move up, spend when blade rabbet face and measure a fixed position that spend a face piece stick when tightening, blade rabbet datum line reachs certain height, blade is fixed measuring in providing. The fixed position cover that provides in order to measure is fiducial build measuring coordinate is, if the graph is shown 2 times,measure recognizance compose. 2 model the face measures an analysis change of curvature of place of root of this lamina leaf face is big, and change of curvature of Xie Jian face is less. General model when the face is measured, to program is a process that measures circularly, every sectional it is begin scanning to end to the side of exhaust into gas edge from blade, have redundant share cutting out again, if the graph is shown 3 times,form a curve that close. The first time machine to prevent a fault, undertake metrical an analysis to blade with 2 kinds of methods. The first kind of method is all place blade undertake collecting nodding metrical, measure data error to avoid what bring when compensation to measure ball radius, shut when selecting a site measure compensation, will measure data to guide UG and digital-to-analogue undertake comparing is opposite, ratio a data whole will be measured to slant when be opposite a radius that measure a needle is worth buy. The 2nd kind of method is software is measured to fall to analyse software to undertake an analysis with Blade in PC-DMIS. 2 kinds of measurement technique measure data to if the watch is shown 1 times,contrast. By the watch 1 can see, in apex place, because change of blade profile curvature is gentlier, measure conclusion to be differred only 0.

004mm, and foliaceous root place is sectional because blade profile change is bigger, differ 0.

053mm, cannot undertake scanning evaluating to Xie Gen face directly so. Two kinds of methods are used when measuring blade profile outline to spend, apex is sectional (whole sealing is sectional) use whole sealing to scan, use blade BLADE of special analysis software undertakes analytic evaluating; Xie Gen is sectional use the way that picks a site to undertake metrical, actual measurement dot and CAD model undertake contrasting outputting. Nextpage3 damp stage measures surface of fluctuation of stage of this lamina damp to be comprised by curved surface of three dimensional space, damp stage borders angle of space of face and long side, short edge is daedal. When measuring next exterior outline on damp stage to spend, the means that uses scanning curved surface undertakes metrical, actual measurement model of value know exactly about sth undertakes contrast, show conclusion directly in digital-to-analogue, the repair of facilitating lamina, drift analysis of damp stage appearance sees a picture 4. Damp director edge, short edge is circular arc form, find out apogee to serve as theoretical value to director, short to blade damp edge undertakes metrical and undertake comparing bisect analyse with digital-to-analogue in digital-to-analogue directly when be measured first, but the discovery in the process is measured in later period, as a result of the machining error of blade, if collect the apogee that can not assure to be able to adopt damp director, short limit every time at 1 o'clock only, this place is circular arc model, measurement point a little all but, measure conclusion to be able to differ a lot of. Final course carries out discovery repeatedly, the direction that if coordinate the department rotates,goes with damp director, short Bian Ping is hand-in-hand line scanning, maximum is found out in scanning dot, measure the can accurate true treatment quality that reflects blade with this kind of method. If the graph is shown 5 times,to damp stage scanning looks for high point. Blade damp stage borders the face is one rotates by 3 angle formation space is three-dimensional and planar, damp stage has the annular effect that prop up when blade is assembled, when blade is assembled together, stage of every lamina damp joins each other, prop up each other, when engine works, blade high speed runs, damp stage reduces blade vibration, as assemble dimension, damp stage borders the dimension of the face asks very severe, when measure, the direction that must rotate this to ask to measure to blueprint, want the vector of accurate computation measurement point, when be being measured otherwise, the radius compensation of bougie will be not accurate, bring about measure a mistake, for accurate measure damp stage to border the dimension of the face, rotate coordinate department along Z axis direction first, rotate along Y axis direction again, when coordinate department X axis rotates to border with damp stage face normal direction agrees when, can fasten X direction to select a site along coordinate. If have digital-to-analogue, need to measure blade coordinate department and digital-to-analogue coordinate department to keep consistent only, search the vector of the dot through digital-to-analogue, measure digital-to-analogue to be compared directly directly right, avoid three-dimensional rotate coordinate is, measure precision and measure efficiency very tall. 4 lamina vibration asks because this lamina is very long,the problem is solved, but ply is very thin, when holding clip, just undertake fixed in the rabbet, foliaceous body is free condition up, so the addition as scanning height, blade tigidity is abate, blade and measure resonance phenomenon produces between the needle, affect the on the rails of scanning. If the graph is shown 6 times,condition of the vibration that measure a needle leaves metrical curve. Study the reason of oscillatory generation discovers, vibration is the motion of a kind of special form, in process of this kind of campaign, mechanical system will balance positional reciprocate around its, look from kinematic viewpoint, mechanical vibration is to point to the displacement of mechanical system, speed, acceleration to follow the metabolic pattern of time around some value, because itself has quality and flexibility,mechanical system can produce vibration is, damp makes vibration is planned to make, reduce vibration to want to decrease on one hand so measure the osculatory power that is aimed at blade, want to increase damp on the other hand, waste energy. After trying a lot of methods, the decision increases damp with the method that adds plasticene, waste energy, reduce vibration, measure Xie Penshi to stick plasticene in foliaceous back, measuring a leaf unlucky in Xie Pentie plasticene, this kind of method solved the resonance phenomenon of blade thoroughly. If the graph is shown 7 times,blade first time sticks plasticene position. Nextpage becomes a worker when foliaceous body outline thick lamina has repair, the measurement that is like remeasure lamina conclusion and before abhorrent, the part of repair will be larger, because measure column form the needle to change,be globose measure a needle, take exhaust brim form very truthless, via analysing discovery, when plasticene of alternant outfit, discharge, the measurement of blade condition had happened to change. Will measure a program to undertake optimizing, measuring different measurement is used when blade is different and sectional angle, reduce the force that measures the contact between needle and lamina as far as possible, the measurement that tries to differ parameter (measure speed, measure thickness) . When measuring a program to measure blade with what optimize, xie Jian is only sectional generation is oscillatory, need to add plasticene to be able to be solved thoroughly in Xie Jian only blade and measure the resonance phenomenon between the needle, also become truer into exhaust brim appearance, and be operated easily with measure, if the graph is shown 8 times,apex adds plasticene. 5 measure repeatability problem to be in of complex Baobi lamina in measuring, outside measuring precision to affect to blade besides blade resonance, still have a very serious problem: Measure a repeatability difference. Measuring blade to border when the face, same a lamina, hold clip 5 times, if the watch is shown 2 times,measure data. From the watch 2 can see: Blade repeats outfit clip 5 times, measure data to differ at most about 0.

16mm, have 0 only to tolerancepublic errand.

The dimension of 06mm asks, this kind measures precision to be able to be satisfied far from. The measurement with old basis experience and characteristic of rabbet of swallow end sex, design and made measure clamping apparatus, the dimension spending a face of this clamping apparatus and blade rabbet are consistent, underside size is larger than blade rabbet dimension 1mm left and right sides, screw blade with bolt, put clamping apparatus in vice to measure again, this measures a clamping apparatus to have the effect of clamp lamina merely, blade rabbet is besides one part clamp in clamping apparatus, the others is exposed for the most part in clamping apparatus exterior, measure a needle to be able to be measured. If the graph is shown 9 times,measure clamping apparatus. With expose outer blade rabbet to build measuring coordinate is, collect in blade rabbet underside at 3 o'clock, the face is spent to collect in blade rabbet at 2 o'clock, collect in blade end panel using iterative method to build the first coordinate at 1 o'clock is. In blade rabbet for two times the face collects 6 each, every are nodded 3 times all right, undertaking best-fitting coordinate is, as measuring coordinate is. Measure in this reach coordinate department to fall to border to a lamina remeasure 5, if the watch is shown 3 times,measure conclusion. From the watch 3 can see, the lamina that measures with present measurement technique borders the area is the largest differ to have about 0 only.

008mm, be being measured so is stable and reliable. The last word passes pair of complex Bao Biyan the research of measurement technique of end rabbet lamina was solved effectively when measuring big, thin lamina range, foliaceous body and measure the resonance issue between the needle, offerred a kind of measurement technique to complex and large lamina, the clamping apparatus design to lamina of swallow end rabbet and build coordinate to fastened a method to offer new thinking. CNC Milling