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 Posted: Thu 1:51, 30 Dec 2010 Post subject: ed hardy clothing Rectangular box to strengthen th |
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Rectangular box to strengthen the process of electro-hydraulic press
30.330.127625017254. Chen Shun-call angle (BARS side) ~ 1 ∞ 30o00430.33 Tsui 45276250I35555. Mixed with the front panel -98 | 50Oo6l0061 Tsui 031l3867 ~ 0412O26. Gardenia the front plate ~ 1 + 0o0l4301430.1l712B6700814l7 bow plate I5 --- 0.067--6O30129 \No. 3, No. 8 final deformation of the total,[link widoczny dla zalogowanych], and straight edge and the side wall of the corner part of the die parts fit. Thinning of the workpiece in the region 0.08 ~ 0.12 strain. Deformation sequence in such a straight edge in the press with a large high parts 5 and 6 when that part of the workpiece in the corner thinning strain value reached 0.28 to 0.35, depending on the segment of its parts The shape may be. These values are almost the limit. In the finishing process, there are 5% ~ 7% I pieces of crack formation in the region. Been identified, in the deformation controlled by pulse method workpiece loading zone of the workpiece can be formed box-shaped piece of straight edge and bottom corner, when r / H ≥ 0.4 level when the local stretch m ≤ 2. 35. Figure 3 shows the roof after the stamping out of shape. To simplify the process, two parts out the same time. The third and fourth methods the effect of strengthening the van's shock absorbers in the dressing angle (Parts 3 and 4) be verified when the stamping process. Figure 4 shows the shock absorber angle has four straight edges of different heights, and the straight edge and the sidewall radius are different. Straight edge has convex and concave plan. For these parts, has created two sets of equipment: a set of equipment (the die and the plate) a window shape, the die size of the depth profile than the parts is a small 7%. Another set of equipment for expanding and correction in the first step in working out the parts (the shape of the die cavity of work consistent with the part size). After lap 3, Figure 4 shock absorber angle roof was repaired in two working steps in the manufacturing process of such parts. In the first process step, the almost blank sheet stamping to the straight edge corner part of the stretch degree of 2.35-25. In the second process step, the depth of the three-dimensional deformation along the workpiece and die in the horizontal plane along the broadening. At this point, the plane flared flange has a number of difficulties. Cut in the middle of the workpiece, the three-dimensional parts of the correction is relatively simple. In the straight edge part of the thin fillet strain of 0.2 ~ 025. Manufacture of parts the amount of labor is structured as follows (%): Installation of equipment the first process step of 5% in the first punch is 20% process step, remove the equipment first process step of 5%, installation of a second working step equipment,[link widoczny dla zalogowanych], 5%, in the second process step stamping is 20%, crossed and cut semi-finished products 10%, 20% correction part, and finally crossed and trimming of 10%, 5% repair clamp. The same program has verified the following process: ① In the second process step of stamping the workpiece within the die to the straight edge corner part of the stretch degree of 2.35 ~ 2.5; ② away from the workpiece and the die area is not fit (50 ~ 100) t from the straight edge of the technology gap to do; ③ In the second process step of stamping die for a correction within a three-dimensional shape of the workpiece. In that case, at the edge and do not fit the gap between the boundaries of the workpiece area is strongly pulled to the top corner. Because of this deformation of the order, has received part of the straight edge and bottom corner portion (see Figure 4, R10) is equal to 7.25 degree of tension. Not appear in the R10 section wrinkling on the traces of evidence given away by the strong corner section. R13 ,[link widoczny dla zalogowanych],13-R53 also combines segments of a wrinkle that can be explained that,[link widoczny dla zalogowanych], in the relative parts center section of the convex fillet between the R53 R10 Au, during deformation along the width along the adjacent segment was the width of the tensile deformation of the compensation. During this pull on the local level is equal to 5.55 sec. Comparison of the two manufacturing solutions can be revealed, the second program is more effective because the press can be reduced almost 50% of the amount of labor, and do not need to create a complete set of equipment. Therefore, this process scheme was used in the electro-hydraulic press before the car fender, straight edge in the part before the lights cut the mounting holes on the former straight edge straight edge and a rounded part of the correction before the final. Straight edge lower parts, for example,[link widoczny dla zalogowanych], after the arch plate, the straight edge height equal to 15ram, and this is no flange on the best way of stamping with a punch. Part of the process depends on the situation of the degree of local flange, its straight edge is equal to the ratio of height to the radius. 4 Conclusion industrial test repair electric hydraulic press 08F steel box shaped part process that depends on the technology of most of the straight edge and the bottom part of the fillet size. With the improvement in the level of local stretching of these parts increasing manufacturing complexity. Therefore, to improve the process, which must be m trying to reduce the local extent of the value of stretching. Other relative parameters, several indicators have little to do.
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