handbook of die design 2nd edition phần 1 ppsx

[...]... 0.40 0.60 0.80 1. 00 1. 20 0.38‡ 0.38 0.50‡ 0.50 0.70 0.88‡ 0.88 1. 12‡ 1. 12 33.8 48.3 44.5 63.5 88.9 78.2 11 1.8 99.6 14 2.2 6.4 12 .7 19 .1 25.4 31. 8 38 .1 44.5 50.8 76.2 10 1.6 12 7.0 15 2.4 mm 0.46 0.94 0.72 1. 56 2.32 1. 46 3.00 2.00 3.82 0 .10 9 0. 219 0.328 0.438 0.547 0.656 0.766 0.875 1. 313 1. 750 2 .18 8 2.625 in R1 in mm in 11 .7 23.9 18 .3 39.6 58.9 37 .1 76.2 50.8 97.0 2.8 5.6 8.3 11 .1 13.9 16 .7 19 .4 22.2 33.3... 0.064 0.064 0.064 0.064 0.064 in T* 0.4 0.6 0.8 1 1.3 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 mm 98.6¶ 0.8 1. 0 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 1. 6 mm 63.5¶ 44.7¶ 32.0¶ 3.88¶ 0.032 0.040 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 0.064 in T† 2.50¶ 1. 76¶ 1. 26¶ 10 :28 AM 1. 33 1. 90 1. 75 2.50 3.50 3.08 4.40 3.92 5.60 0.25 0.5 0.75 1 1.25 1. 5 1. 75 2 3 4 5 6 in A 11 /08/05 *Maximum thickness for rubber-pad-formed... Terms of Use as given at the website Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 31 BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS 31 BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS TABLE 1- 1 Corner Bead Design Data In inches: H M (ref) Spacing between beads 3/ 16 17 / 64 21/ 64 1/ 8 13 / 64 17 / 64 23/ 32 15 /32 11 /2 21/ 2 3 31/ 2 4.8 6.7 8.3 3.2 5.2 6.7 18 .3 29.4 38 .1 63.5 76.2 88.9 Size L Type R1 R2 R3 1/ ... 6.35 6.35 6.35 6.35 1. 78 3.56 5.33 7 .11 8.89 10 .67 12 .45 14 .22 21. 34 28.45 35.56 42.67 Titanium 0.070 0 .14 0 0. 210 0.280 0.350 0.420 0.490 0.560 0.840 1. 120 1. 400 1. 680 1. 12 1. 12 1. 5 1. 5 2.0 2.52 3.52 3.0 3.0 0.5 1 1.5 2 2.5 3 3.5 4 6 8 10 12 Low-carbon Steel, Aluminum, Magnesium mm R2 R3 28 28 38 38 51 64 89 76 76 13 25 38 51 64 76 89 10 2 15 2 203 254 305 mm 0. 016 0.025 0.032 0.040 0.0 51 0.064 0.064 0.064... (stretch) or compression (shrink) in the metal of a given flange TABLE 1- 3 Design Data For Round Beads or Bosses Height, h Material thickness mm in mm Suggested ratio, H/h (.062) 1. 59 3/ (.093) 32 2.38 1/ ( .12 5) 8 3 .18 020 0 31 048 020 0 31 048 020 0 31 048 0. 51 0.79 1. 22 0. 51 0.79 1. 22 0. 51 0.79 1. 22 12 –20 14 –24 16 –26 12 14 16 11 12 13 in 1/ 16 Note: Use with Fig 1- 38 Downloaded from Digital Engineering Library... 29.4 38 .1 63.5 76.2 88.9 Size L Type R1 R2 R3 1/ 2 3/ 4 11 /4 1 1 2 1/ 4 5/ 16 11 / 32 23/ 64 41/ 64 55/ 64 6.4 7.9 8.7 9 .1 16.3 21. 8 In millimeters: 12 .7 19 .1 31. 8 1 1 2 Note: The chart refers to Fig 1- 34 Source: Reprinted with permission from “Product Engineering Magazine.” A circumferential bulge (Fig 1- 36), a hem, a joggle, or a curl (Fig 1- 37), can all be considered beads, for they provide the...Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 9 BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS FIGURE 1- 12 9 Side view of the cast product Drawn parts’ edges are similar in that they display the characteristics of the cut metal, where produced from previously blanked material (see Fig 1- 14a) This is due to the action of blankholder, which retains the outer rim of. .. Any use is subject to the Terms of Use as given at the website Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 33 BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS 33 FIGURE 1- 36 Circumferential ribs in stampings (From Frank W Wilson, Die Design Handbook, ” New York, 19 65 Reprinted with permission from The McGraw-Hill Companies.) 1- 3-2-2 Bosses or Buttons These... subject to the Terms of Use as given at the website Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 11 BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS 11 The reason for this is obvious: The material needed for the expanded length of the drawn portion has to be taken from somewhere, and practically (and mathematically) the volumnar content of that section must... Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 25 BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS 25 However, in sheet-metal stamping, many scrap areas may be decreased, if not minimized, just by rearranging parts on the strip (Fig 1- 31) Naturally, the size of the resulting strip, and consequently the size of the die must be kept in mind in the course of such . plastic materials are generally of BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS 7 FIGURE 1- 9 (Continued) FIGURE 1- 10 Sample of a cast part. Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 7 Downloaded. dam- aged pieces 4. Spoilage of possible storage-sensitive material and the scrap rate BASIC DIE DESIGN AND DIE- WORK INFLUENCING FACTORS 11 Suchy_CH 01. qxd 11 /08/05 10 :28 AM Page 11 Downloaded from Digital. thickness often serves as a substitute for sturdiness (see Fig. 1- 10). 6 CHAPTER ONE FIGURE 1- 8 Grain variation in sheet-metal strip. FIGURE 1- 9 Grain of material in bending. Suchy_CH 01. qxd 11 /08/05 10 :28