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Coordinate Measuring Machine with the crown gear of the theoretical basis

A 026.619931E a 0318.52.587g91E a 0239143747. Ol52Z9E a 03l9.02734375E a 027.283926E a 0319.5283Z031E ~ 027. Scorpionfish a 0320 137E. O3.097344E a 0Z3.9l3l758.214951E a 03 (3) to get: the original pitch line tooth thickness of gear up along the tooth half the change in law to obey the following formula: V r + n {÷-z · one ( plant) - ■ ----- ■ ■ --- 1 a arctg41 a (rbJ''/ leaf r,. _. a inv2o] × l (4) calculation or measurement, the tooth width to the midpoint as the origin , take any distance x, calculated, and then substituted into the equation (4), can be obtained at any distance corresponds to the tooth crown gear pitch line of the law to the line profile half-tooth thickness, but also with three Coordinate Measuring Machine crown gear of the second theoretical basis. According to the above two theoretical derivation, the specific value. Table 1.3 measure the accuracy of the theoretical basis for the relationship with the gear indicator on the gear precision analysis, only the following two kinds of indicators may interfere with the measurement values. bad 2 parts because after processing there are inevitably some errors, even if these processing errors in the accuracy range will interfere with the measurement, because the relative than the minimum the tooth in the tooth to calculate the upward change in the amount of the tooth thickness is larger, in order to eliminate processing errors on the measurement of the impact of these technologies should be handled. measuring a single tooth should first meet: dancing with the diameter measurement of the time Fr = O conditions, this would also eliminate the error circle beat Fr interference from, this is the first processing requirements. measurements, so that the tooth was measured relative measurement on both sides of the base plane P (xoy) to maintain symmetry (Figure 4), so teeth to the error can eliminate the interference generated F day, this is the second processing requirements. * 4 4 spring ring removed the book _ Ye Mang interference processing in the measurements after treatment can meet the gear measurement drum and the existence of such relationship, the higher the gear precision, the error of the disturbance is smaller. 4 Conclusion and deduced by the theoretical analysis to determine the measure of the theoretical basis of crown gear, you can use two methods of drum gear for O f volume. (1) crown gear teeth on the curved section of the line, according to (1) rule of measurement, the measurement results should be a fixed value. (2) of the normal tooth section of the tooth to the linear line to be measured, Because the presence of drum volume, measurements should meet (4). two measurement methods, the amount of the coordinate plane f speech can be accomplished. coordinate measuring machine for measurement of complex surface theory should be calculated in advance value, then the point on the surface f the amount of play compared with the theoretical value, ranging from those is the existence of error (Received Time .9 g - 09 - 23) (Hangzhou Machine Tool Plant. Hangzhou 310015) hard, lightweight accuracy and stability of high-quality ceramic block gauge,[link widoczny dla zalogowanych], more and more people of all ages. ceramic block gauge the accuracy of better retention than the piece of metal regulation, and the hard, wear-resistant, easy to scratches, especially zirconium oxide, and its smooth surface , very good corrosion resistance, the following rules on the block zirconia and tungsten carbide and steel for comparison.. oxidation Pei block gauge the wear resistance (see Figure 1) is a steel block, Cao Yi-regulated the amount of (∞) 0.40 .2 Au l5 ~ 10 times, 5 times a tungsten carbide gauge block is for the stability of dimensional accuracy is very important. the famous instrument maker has secret plans off the trial out of Zirconia block gauge,[link widoczny dla zalogowanych], called Regulation of the Sierra block. The gauge block more than a year after a trial, found that the stability of its accuracy is far superior to steel gauge block. In theory, the expansion coefficient of block gauge with the measured part of the expansion coefficient of phase close to most of the workpiece material is copper, the expansion coefficient of zirconia and steel expansion coefficient close to long-Ij. Meanwhile, the Sierra block gauge the surface is quite smooth, easy adhesion, oxidation, then the adhesion between the block and regulations Taiwan is almost hard gold rules,[link widoczny dla zalogowanych], and regulations than the new steel block is much smaller. From another angle, the ceramic material very dense, light measures,[link widoczny dla zalogowanych], has a good sense of bonding, even with the steel block Regulation can also be combined well fools. Sierra block breaking rigid rules of other high-strength ceramics with similar, and this indicator has exceeded the common blocks required for breaking the rigid regulatory requirements. Table 1 Performance comparison of four materials . Table lHt ± resistance is also present c3) from Figure 1 and Table 1, Zirconia block gauge with good wear resistance, good dimensional accuracy to maintain, light weight,[link widoczny dla zalogowanych], strong adhesion to the future, the ceramic block gauge to gradually replace the steel gauge block. (Close} high time r92 - ll of a 04)

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