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US 2024/0307987 A1Published application
Tap
AssigneeNachi-Fujikoshi Corp.
InventorsYuuki KURITA, Hiroki OGUME, Itaru YAMAZAKI
Life of this patent
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Abstract
A tap including an incomplete thread having a plurality of thread ridges that threads a workpiece, a complete thread including a cutting edge formed continuously from the incomplete thread, and a groove part that is disposed in each of the incomplete thread and the complete thread to discharge chips of the workpiece, wherein relationships respectively expressed by Equation (1): D1≥D0−P and Equation (2): h≤P/2 are simultaneously satisfied in a relationship among a nominal diameter D0 of the tap 100, a root diameter D1, a pitch P, and a thread ridge height h.
Claims5
A tap comprising:
- an incomplete thread having a plurality of thread ridges that threads a workpiece;
- a complete thread including cutting edges formed continuously from the incomplete thread;
- and
- a groove that is disposed in each of the incomplete thread and the complete thread to discharge chips of the workpiece,
- wherein relationships respectively expressed by the following expressions (1) and (2) are simultaneously satisfied in a relationship among a nominal diameter D0 of the tap, a root diameter D1, a pitch P, and a thread ridge height h:
- D
-
- 1
- ≥
- D
-
- 0
- -
- P
- ,
- and
- (
- 1
- )
- h
- ≤
- P
- /
- 2.
- (
- 2
- )
24 more elements
Dependencies are inferred from the claim text.