| 摘要 |
Method (21) for fabricating a barrel arbour (1) for a timepiece: a bar is wire drawn to form a continuous profile (30), projecting or re-entrant relative to a support sector (2) having a touching-up axis (DC) parallel to the bar axis, and whose section matches that of complementary hooking means (3) to be made on said arbour (1), in a touching-up operation, the complete external contour of the arbour (1) is machined. Drive element (100) including: a determined spiral-coiled mainspring (10) including at an inner end (12) hooking means (13) having a defined profile (14), an arbour (1) produced by this method, comprising said support sector (2) for supporting said first coil (11), and a complementary hooking means (3) having a complementary profile (314) to said profile (14) for pivoting together with said mainspring (10).
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