| 摘要 |
PURPOSE: A method for forming a pattern of a strap is provided to prevent quality degradation of a strap by preventing deformation of a slot in forming a pattern on a plate material of the strap. CONSTITUTION: A process(T1) for forming a supporting pattern includes a hole forming step(S1), a chamfering step(S2), and a forming step(S3). In the hole forming step, a hole is formed in both sides of a plate material. In the chamfering step, an inner circumference of the hole is chamfered. In the forming step, the plate material between the holes is formed. In a hammering process(T2), an embossing is formed by hammering the plate material. In a slot forming process(T3), a slot is formed in the plate material in order to connect the strap.
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