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D21 stringers around the outer plate detection scheme


Test items for the measurement shown in Figure 1 ① ~ ⑥ size; ⑦ ~ ⑤ group of hole diameter, hole and, Y, Y, Z to the pitch; shown in Figure 2 ① ~ ⑨ throughout the A, A ,, B, B, X,, Z, and calculate the distortion 0 = sin early l {df Ang /] 2000l'q,. Wen then. _-Chu,MBTシューズ 販売店, @ hole round basis, coordinate value (535.1200,675) (535,2 =; 60-15) 1 hole diameter measurement in the automotive manufacturing industry, a large beam detection scheme used are: ① Measuring and aids with the common measure: the D21 on the left outer plate stringer test platform, with a high degree of foot, foot box, crossed calipers, square boxes and other measurements, then measured the right stringer D21 outer plate. As the D21 left / right outer plate is curved longitudinal beams, spatial dimensions and more,Beats By Dre Headphones, and long 4428nm,herve leger toronto,, measured several times the size of the required transmission and conversion, measurement error, it can not die this acceptance test results as a basis. ② with three-dimensional coordinate measuring machine and a dedicated test stand measurement; with two pins (hole @ ⑩ fixed position) and special test stand fixed in three-dimensional coordinate measuring machine in the correct position. To 1) stringer 21 left on the outer plate and clamping on a special test stand measurements, and then use the same program right vertical beam measured outside the D21 board. This program is easy operation, accurate measurement data, the Thai side used this program. FL-/ . 1I [l,. {F Figure 2, Y, z = 535 to the pitch ... a flail. y2 ~. Aiming c between each throw. = 38fl0 company no special test stand, while manufacturing requires a certain period,vibram five fingers outlet, but the Thai staff in my company to stay is shorter,herve leger sale, so the second option could be implemented. And stable without the need for mold detection of all projects, special test stand is only used when debugging the mold, so to save time from the same author and economic considerations, not identified by analyzing the specific detection of the stent outer plate D21 is about precision measurement of longitudinal program. Testing program: (1) two 600 × 600 square box on the three-dimensional coordinate measuring machine (Figure 3), the D21 left and right outer plate and longitudinal discharge in three-dimensional coordinate measuring machine; (2) adjusting the left D21, Right stringer plate, and make the hole in the correct measurement @ @ position that @ (535,1200675), ⑩ (535,2360, a 15), after adjusting with the iron, weighing about 10kg in Figure 3, location pressed parts, collision detection process to prevent the moving parts, affecting the accuracy of test results (3) L @ ⑩ (transfer under Section 38) A pair of scrambling to help ∞ Vol 28-year period], and semi-wire machine nut should be maintained between a certain gap of about 0. o5n life, to achieve the desired objective 3 Note the use of this method to measure the thickness of the plate size, should pay attention to the following questions: (]) making half-nut, the size 11I.5 tolerance may be required, but must ensure that TSO × 4 and left screw hole axis parallel to the bottom of 0.03mm or less (2) concrete slab structure can be measured according to the actual circumstances, but must ensure that the underside of the upper and lower control 0.02ram parallelism error less than (3) socket head cap screw bottom should be polished in order to ensure the accuracy of measurement 4 Conclusion Practice has proved that the introduction of this method, easy to operate, accurate and reliable measurement results, after an ideal measurement scheme of the program not only used crankshaft grinders, but also widely applied to other cylindrical grinder: A similar measurements on other aspects of the application, the author has conducted some research, the results will be released. Error Analysis: D21 left and right outer rails The board's main source of measurement error is to measure baseline and measurement tools. Author hole @ ⑩ selected as benchmarks and design, manufacturing base line, before the proof of the benchmark in measuring the location of the hole to ensure the accuracy of test results: three-dimensional coordinate measuring machine is a piece {to detect large-scale molds and stamping automotive products, precision equipment to ensure the measurement precision, therefore the program due to measurement error is negligible. This program is not easy to adjust the position of the workpiece operation time-consuming, but around the vertical beam foreign rice symmetry, sitting only a small scale can be measured by moving around pieces of the same coordinates at the measurement, it is saving more than using a dedicated test stand measurements n, tJ can fight this case does not just stand and manufacture of special inspection}, saving manufacturing costs, speed up the acceptance of touch with progress can be extended to other vehicles or large beam mold inspection mold overhaul ∞ when the thick parts detection test
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