TAILIEUCHUNG - Advances in Vibration Analysis Research Part 13

Tham khảo tài liệu 'advances in vibration analysis research part 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Analysis of Microparts Dynamics Fed Along on an Asymmetric Fabricated Surface with Horizontal and Symmetric Vibrations 349 Fig. 8. Profile model of convexity 1 and its approximation position x axis JJ. m Fig. 9. Convexity model based on measurements averaged model of five convexities 350 Advances in Vibration Analysis Research 5. Analysis of sawtoothed feeder surface model In this study sawtoothed silicon wafers were applied for feeder surfaces. These surfaces were fabricated by a dicing saw Disco Corp. a high-precision cutter-groover using a bevelled blade to cut sawteeth in silicon wafers. Inspecting a sawtoothed silicon wafer using the microscopy system we obtained a synthesized model Figure 10 and its contour model Figure 11 . Then we found that these sawtooted surfaces were not perfectly sawtooth shape but were rounded at the top of sawteeth because of cracks by fabricating errors. So these sawtoothed surfaces were needed to derive surface profile models based on measurements same as Section 4. Analysing Figure 9 with the DynamicEye Real software we obtained a numerical model of the top of sawtooth representing with the circle symbol in Figure 12. Defining the feeder coordinate O - xy with the origin O at the maximum value x axis along the horizontal line and y axis along the vertical line this numerical model was approximated with four order polynomials as follows 4 . 3 . 2 . y fs x a4x a3x a2x a1x a0. 5 An approximation function was drawn with a red continuous line in Figure 11 when each coefficient was defined as Table 1. Interpolating other part of sawtooth with straight lines we obtained surface profile model of sawtoothed surfaces Figure 13 . In this figure p shows the sawtooth pitch and 0 shows the angle of elevation. In addition the incline angle of the line HJ was the same as the angle of elevation 0 the line KL was along the ys axis and the curve JK was represented by equation 5 . Fig. 10. Synthesized model of sawtoothed surface p mm and 0 20 deg

TỪ KHÓA LIÊN QUAN
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.