Avoid nap model flexible the structural design of emery wheel and precision
- source:TECHEN CNC Machining
5kPa; When restraining L=3mm of coefficient K=3; equivalent length: Get δ 1=0.
0001mm. At this moment the deflection δ R=0 on direction of radius of whole bedspring annulus.
24mm. Graph the 4 deflection curves that get bedspring ring to be measured in the experiment. Can see from inside the graph: Average deflection and theory calculate the actual measurement on direction of radius of annulus of the bedspring after aerating deflection is conterminous close; The circumferential error of annulus of the bedspring after aerating is reduced greatly. Graph 4 continuous the precision of 3 bedspring annulus analyses the deflection curve of bedspring annulus to work to get first-rate parameter, change of research gasbag actuating pressure is circumferential to bedspring annulus the influence of the error. In P=2.
5 ～ 8.
The test has to emery wheel inside 5kPa limits, get pressure change is opposite if the influence curve of bedspring annulus error pursues 5 are shown. Graph 5 aerate the pressure influence to circumferential error can reach from inside the graph: P=3.
Bedspring annulus error is the smallest near 5kPa, because this chooses P=3.
5kPa serves as the actuating pressure of emery wheel. Take actuating pressure P=3.
5kPa; Adjust the bedspring annulus in emery wheel and gasbag are in optimal position, measures bedspring annulus is circumferentially error curve is shown 6 times like the graph. Take actuating pressure P=3.
5kPa; Use aerate, deflate, aerate again the repetition of means research emery wheel precision. Graph the 7 repetition that get bedspring ring to pass an experiment 3 times to measure precision curve. Graph the circumferential error of 6 bedspring annulus pursues the repetition of 7 bedspring the dynamic precision of 4 emery wheel uses precision continuous bedspring loop compose, because rotate speed changes,decrease the influence of circumferential to emery wheel error. Graph 8 to use continuous and cut off type construction, rotate speed change is circumferential to emery wheel the curve that precision affects. Graph the influence of change of 8 rotate speed to circumferential precision is on bedspring annulus adhesive bonding 50 balata annulus, use emery wheel of shape of 280 alumina cups to undertake to its one-time long form, measure balata annulus is circumferentially curved surface error is shown 9 times like the graph. Can reach from inside the graph: The biggest round error on annulus of balata of the emery wheel after long form is worth ＜ 20µm. On annulus of balata of the emery wheel after metal mold arenaceous belt fits long form, take actuating pressure P=3.
5kPa, measure arenaceously if the graph is shown 10 times,take error of circumferential curved surface. Can reach from inside the graph: The biggest circumferential error on arenaceous belt of the emery wheel after long form is 50µm. Arenaceous belt is taken base primitive precision and the circumferential precision that install parameter to will affect emery wheel directly. Graph the circumferential precision of 9 balata annulus pursues 5 conclusion research makes clear the circumferential precision of arenaceous belt of 10 emery wheel: Compose of successive bedspring loop avoids designs gasbag type inner tube nap emery wheel, came true flexible the basic function of emery wheel and the characteristic that avoid nap emery wheel. Analytic test result can reach: · chooses proper gasbag pressure to be able to make emery wheel gets taller circumferential precision. The production precision of · gasbag and bedspring annulus and installation position affect the circumferential precision of emery wheel. · is continuous the emery wheel that bedspring loop compose reduces to be caused by rate change is circumferential error. The matrix of · emery wheel (balata annulus) the 20µm of circumferential precision ＜ that go up, achieve design requirement. CNC Milling CNC Machining