针对某一锌合金模具结构分析及材料耗损情况 | ||||||||
此模具的实际状况如下表: | ||||||||
模具穴数 | 整模重量(g) | 排渣重量(g) | 流道重量(g) | 两个产品重量(g) | 排渣占产品重量的比例(%) | 产品占整模的百分比(%) | | |
1×2 | 127.8 | 30.5 | 79.4 | 17.9 | 170.39% | 14.01% | | |
从上表可以看出产品重量占整模重量的百分比14.1%太低,不符合设计要求,排渣占产品重量的比例也太大。根据此模具的状况试算如下: | | |||||||
现在假设工单要生产10000PCS,按7.5%的损耗计算应领料数量: | | |||||||
10000×17.9÷2×1.075=96212.5g | | |||||||
96212.5g料第一次熔完可生产产品数量: | | |||||||
96212.5÷127.8×2=1505pcs | | |||||||
第一次熔料可能产生渣的重量(按0.5%算): | | |||||||
96212.5×0.5%=481g | | |||||||
第一次熔料生产完成后剩下实际材料的重量为: | | |||||||
96212.5-481-1505×17.9÷2=82261.75g | | |||||||
82261.75g料熔完可生产产品的数量: | | |||||||
82261.75÷127.8×2=1287pcs | | |||||||
第二次熔料可能产生渣的重量(按3.5%算): | | |||||||
82261.75×3.5%=2879.16g | | |||||||
第二次熔料生产完成后剩下实际材料的重量为: | | |||||||
82261.75-2879.16-1287×17.9÷2=67863.94g | | |||||||
67863.94g料熔完可生产产品的数量: | | |||||||
67863.94÷127.8×2=1062pcs | | |||||||
第三次熔料可能产生渣的重量(按3.5%算): | | |||||||
67863.94×3.5%=2375.23g | | |||||||
第三次熔料生产完成后剩下实际材料的重量为: | | |||||||
67863.94-2375.23-1062×17.9÷2=55983.81g | | |||||||
| | |||||||
根据以上推算方法计算如下表(单位:g) | ||||||||
次数 | 每次投入料的重量 | 渣的损耗率 | 整模重量 | 产品单重 | 生产产品数量 | 渣的重量 | 剩下材料的重量 | |
1 | 96212.5 | 0.50% | 127.8 | 8.95 | 1506 | 481.0625 | 82255.66 | |
2 | 82255.66 | 3.50% | 127.8 | 8.95 | 1287 | 2878.948 | 67855.77 | |
3 | 67855.77 | 3.50% | 127.8 | 8.95 | 1062 | 2374.952 | 55976.77 | |
4 | 55976.77 | 3.50% | 127.8 | 8.95 | 876 | 1959.187 | 46177.33 | |
5 | 46177.33 | 3.50% | 127.8 | 8.95 | 723 | 1616.206 | 38093.41 | |
6 | 38093.41 | 5.00% | 127.8 | 8.95 | 596 | 1904.67 | 30853.27 | |
7 | 30853.27 | 5.00% | 127.8 | 8.95 | 483 | 1542.664 | 24989.22 | |
8 | 24989.22 | 5.00% | 127.8 | 8.95 | 391 | 1249.461 | 20239.7 | |
9 | 20239.7 | 5.00% | 127.8 | 8.95 | 317 | 1011.985 | 16392.89 | |
10 | 16392.89 | 5.00% | 127.8 | 8.95 | 257 | 819.6447 | 13277.22 | |
11 | 13277.22 | 5.00% | 127.8 | 8.95 | 208 | 663.8609 | 10753.72 | |
12 | 10753.72 | 5.00% | 127.8 | 8.95 | 168 | 537.6858 | 8709.836 | |
13 | 8709.84 | 5.00% | 127.8 | 8.95 | 136 | 435.4918 | 7054.422 | |
14 | 7054.42 | 5.00% | 127.8 | 8.95 | 110 | 352.7211 | 5713.64 | |
15 | 5713.64 | 5.00% | 127.8 | 8.95 | 89 | 285.682 | 4627.691 | |
16 | 4627.69 | 5.00% | 127.8 | 8.95 | 72 | 231.3845 | 3748.14 | |
17 | 3748.14 | 5.00% | 127.8 | 8.95 | 59 | 187.407 | 3035.759 | |
18 | 3035.76 | 5.00% | 127.8 | 8.95 | 48 | 151.7879 | 2458.775 | |
19 | 2458.77 | 5.00% | 127.8 | 8.95 | 38 | 122.9387 | 1991.453 | |
20 | 1991.45 | 5.00% | 127.8 | 8.95 | 31 | 99.57267 | 1612.953 | |
21 | 1612.95 | 5.00% | 127.8 | 8.95 | 25 | 80.64763 | 1306.391 | |
22 | 1306.39 | 5.00% | 127.8 | 8.95 | 20 | 65.31953 | 1058.095 | |
23 | 1058.09 | 5.00% | 127.8 | 8.95 | 17 | 52.90473 | 856.9904 | |
24 | 856.99 | 5.00% | 127.8 | 8.95 | 13 | 42.84952 | 694.1086 | |
25 | 694.11 | 5.00% | 127.8 | 8.95 | 11 | 34.70543 | 562.1845 | |
26 | 562.18 | 5.00% | 127.8 | 8.95 | 9 | 28.10923 | 455.3343 | |
27 | 455.33 | 5.00% | 127.8 | 8.95 | 7 | 22.76671 | 368.7923 | |
28 | 368.79 | 5.00% | 127.8 | 8.95 | 6 | 18.43961 | 298.6986 | |
29 | 298.7 | 5.00% | 127.8 | 8.95 | 5 | 14.93493 | 241.9272 | |
30 | 241.93 | 5.00% | 127.8 | 8.95 | 4 | 12.09636 | 195.9459 | |
31 | 195.95 | 5.00% | 127.8 | 8.95 | 3 | 9.797295 | 158.7039 | |
32 | 158.7 | 5.00% | 127.8 | 8.95 | 2 | 7.935195 | 128.5402 | |
33 | 128.54 | 5.00% | 127.8 | 8.95 | 2 | 6.427012 | 104.1095 | |
34 | 104.11 | 5.00% | 127.8 | 8.95 | 2 | 5.205477 | 84.32221 | |
35 | 84.32 | 5.00% | 127.8 | 8.95 | 1 | 4.216111 | 68.29571 | |
合计 | | | 实际生产品数量 | | 8579 | 19297.82 | | |
| | | | | | | | |
累计渣的损耗 | | 20.06% | | 欠产品数 | 1421 | 欠料 | 15388.72 | |
| | | | | | | | |
| | | | | | | | |
从上表的数据可以看出渣的损耗远远超过了标准要求,这是生产部门无法控制的事实。而且浪费燃料与人工,大大的增加了成本。 | ||||||||
| | | | | | | | |
如果将产品重量占整模重量的百分比提高到20%,则整模产品的重量为89.5g,试算的结果如下: | ||||||||
次数 | 每次投入料的重量 | 渣的损耗率 | 整模重量 | 产品单重 | 生产产品数量 | 渣的重量 | 剩下材料的重量 | |
1 | 96212.5 | 0.50% | 89.5 | 8.95 | 2150 | 481 | 76489 | |
2 | 76488.94 | 3.50% | 89.5 | 8.95 | 1709 | 2677 | 58514 | |
3 | 58514.04 | 3.50% | 89.5 | 8.95 | 1308 | 2048 | 44763 | |
4 | 44763.24 | 3.50% | 89.5 | 8.95 | 1000 | 1567 | 34244 | |
5 | 34243.88 | 3.50% | 89.5 | 8.95 | 765 | 1199 | 26197 | |
6 | 26196.57 | 5.00% | 89.5 | 8.95 | 585 | 1310 | 19647 | |
7 | 19647.42 | 5.00% | 89.5 | 8.95 | 439 | 982 | 14736 | |
8 | 14735.57 | 5.00% | 89.5 | 8.95 | 329 | 737 | 11052 | |
9 | 11051.68 | 5.00% | 89.5 | 8.95 | 247 | 553 | 8289 | |
10 | 8288.76 | 5.00% | 89.5 | 8.95 | 185 | 414 | 6217 | |
11 | 6216.57 | 5.00% | 89.5 | 8.95 | 139 | 311 | 4662 | |
12 | 4662.43 | 5.00% | 89.5 | 8.95 | 104 | 233 | 3497 | |
13 | 3496.82 | 5.00% | 89.5 | 8.95 | 78 | 175 | 2623 | |
14 | 2622.61 | 5.00% | 89.5 | 8.95 | 59 | 131 | 1967 | |
15 | 1966.96 | 5.00% | 89.5 | 8.95 | 44 | 98 | 1475 | |
16 | 1475.22 | 5.00% | 89.5 | 8.95 | 33 | 74 | 1106 | |
17 | 1106.42 | 5.00% | 89.5 | 8.95 | 25 | 55 | 830 | |
18 | 829.81 | 5.00% | 89.5 | 8.95 | 19 | 41 | 622 | |
19 | 622.36 | 5.00% | 89.5 | 8.95 | 14 | 31 | 467 | |
20 | 466.77 | 5.00% | 89.5 | 8.95 | 10 | 23 | 350 | |
21 | 350.08 | 5.00% | 89.5 | 8.95 | 8 | 18 | 263 | |
22 | 262.56 | 5.00% | 89.5 | 8.95 | 6 | 13 | 197 | |
23 | 196.92 | 5.00% | 89.5 | 8.95 | 4 | 10 | 148 | |
24 | 147.69 | 5.00% | 89.5 | 8.95 | 3 | 7 | 111 | |
25 | 110.77 | 5.00% | 89.5 | 8.95 | 2 | 6 | 83 | |
26 | 83.07 | 5.00% | 89.5 | 8.95 | 2 | 4 | 62 | |
27 | 62.31 | 5.00% | 89.5 | 8.95 | 1 | 3 | 47 | |
28 | 46.73 | 5.00% | 89.5 | 8.95 | 1 | 2 | 35 | |
29 | 35.05 | 5.00% | 89.5 | 8.95 | 1 | 2 | 26 | |
30 | 26.29 | 5.00% | 89.5 | 8.95 | 1 | 1 | 20 | |
31 | 19.71 | 5.00% | 89.5 | 8.95 | 0 | 1 | 15 | |
32 | 14.79 | 5.00% | 89.5 | 8.95 | 0 | 1 | 11 | |
33 | 11.09 | 5.00% | 89.5 | 8.95 | 0 | 1 | 8 | |
34 | 8.32 | 5.00% | 89.5 | 8.95 | 0 | 0 | 6 | |
35 | 6.24 | 5.00% | 89.5 | 8.95 | 0 | 0 | 5 | |
合计 | | | | | 9273 | 13209 | | |
| | | | | | | | |
累计渣的损耗率 | | 13.73% | | 欠产品数 | 727 | 欠料 | 893 | |
| | | | | | | | |
| | | | | | | | |
如果将产品重量占整模重量的百分比提高到35%,则整模产品的重量为56g,试算的结果如下: | ||||||||
次数 | 每次投入料的重量 | 渣的损耗率 | 整模重量 | 产品单重 | 生产产品数量 | 渣的重量 | 剩下材料的重量 | |
1 | 96212.5 | 0.50% | 51.2 | 8.95 | 3758 | 481 | 62095 | |
2 | 62094.65 | 3.50% | 51.2 | 8.95 | 2426 | 2173 | 38212 | |
3 | 38212.46 | 3.50% | 51.2 | 8.95 | 1493 | 1337 | 23516 | |
4 | 23515.59 | 3.50% | 51.2 | 8.95 | 919 | 823 | 14471 | |
5 | 14471.27 | 3.50% | 51.2 | 8.95 | 565 | 506 | 8905 | |
6 | 8905.49 | 5.00% | 51.2 | 8.95 | 348 | 445 | 5347 | |
7 | 5346.77 | 5.00% | 51.2 | 8.95 | 209 | 267 | 3210 | |
8 | 3210.15 | 5.00% | 51.2 | 8.95 | 125 | 161 | 1927 | |
9 | 1927.34 | 5.00% | 51.2 | 8.95 | 75 | 96 | 1157 | |
10 | 1157.16 | 5.00% | 51.2 | 8.95 | 45 | 58 | 695 | |
11 | 694.75 | 5.00% | 51.2 | 8.95 | 27 | 35 | 417 | |
12 | 417.12 | 5.00% | 51.2 | 8.95 | 16 | 21 | 250 | |
13 | 250.43 | 5.00% | 51.2 | 8.95 | 10 | 13 | 150 | |
14 | 150.36 | 5.00% | 51.2 | 8.95 | 6 | 8 | 90 | |
15 | 90.27 | 5.00% | 51.2 | 8.95 | 4 | 5 | 54 | |
16 | 54.2 | 5.00% | 51.2 | 8.95 | 2 | 3 | 33 | |
17 | 32.54 | 5.00% | 51.2 | 8.95 | 1 | 2 | 20 | |
18 | 19.54 | 5.00% | 51.2 | 8.95 | 1 | 1 | 12 | |
19 | 11.73 | 5.00% | 51.2 | 8.95 | 0 | 1 | 7 | |
20 | 7.04 | 5.00% | 51.2 | 8.95 | 0 | 0 | 4 | |
21 | 4.23 | 5.00% | 51.2 | 8.95 | 0 | 0 | 3 | |
22 | 2.54 | 5.00% | 51.2 | 8.95 | 0 | 0 | 2 | |
23 | 1.52 | 5.00% | 51.2 | 8.95 | 0 | 0 | 1 | |
24 | 0.92 | 5.00% | 51.2 | 8.95 | 0 | 0 | 1 | |
25 | 0.55 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
26 | 0.33 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
27 | 0.2 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
28 | 0.12 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
29 | 0.07 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
30 | 0.04 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
31 | 0.03 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
32 | 0.02 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
33 | 0.01 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
34 | 0.01 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
35 | 0 | 5.00% | 51.2 | 8.95 | 0 | 0 | 0 | |
合计 | | | | | 10031 | 6436 | | |
| | | | | | | | |
累计渣的损耗率 | | 6.69% | | 欠产品数 | -31 | 欠料 | -19 | |
| | | | | | | | |
从上表不难看出当模具设计不同时原材料的损耗大有不同,而且回炉料重熔的次数从当初的 | ||||||||
35次还做不够产品,降低至10次,不但节约了原材料,而且节约了大量的燃料,这是可以看 | ||||||||
见的成本。 | ||||||||
由此可以说明模具设计的重要性。 |