But excludes sheet metal working machinery and metal-forming and forging machines.
但不包括金属板加工机，金属成形机与锻压机。
Inspired by the World Exhibition in London in 1851, Louis Schuler decided to concentrate his activities entirely on producing machines for sheet metal working.
由于受到1851年伦敦世界展的启发，路易斯·舒尔勒决定将其经营完全投入到金属板材加工设备的生产。
According to the push-iron structure of die for the sheet metal product, introduced the forming process and the typical die design method, and the working principle was introduced, too.
针对常见板金产品模具中的推平结构，介绍了其成形工艺及模具典型结构设计方法，并介绍了模具工作过程。
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