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冲压模具基本结构、类型和原理简述PPT~

  • 2026-10-31 06:14:24
冲压模具基本结构、类型和原理简述PPT~

什么是冲压？

冲压是靠压力机和模具对板材、带材、管材和型材等施加外力，使之产生塑性变形或分离，从而获得所需形状和尺寸的工件（冲压件）的成形加工方法。

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  1. CONNECT:[ UseTime:0.000664s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001039s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000472s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000395s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000795s ]
  6. SELECT * FROM `set` [ RunTime:0.000413s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000795s ]
  8. SELECT * FROM `article` WHERE `id` = 508621 LIMIT 1 [ RunTime:0.000417s ]
  9. UPDATE `article` SET `lasttime` = 1793934680 WHERE `id` = 508621 [ RunTime:0.001437s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000327s ]
  11. SELECT * FROM `article` WHERE `id` < 508621 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000581s ]
  12. SELECT * FROM `article` WHERE `id` > 508621 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000501s ]
  13. SELECT * FROM `article` WHERE `id` < 508621 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000725s ]
  14. SELECT * FROM `article` WHERE `id` < 508621 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000632s ]
  15. SELECT * FROM `article` WHERE `id` < 508621 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000724s ]
0.107036s