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US 2022/0080518 A1Published application
Internal helical broaching tool
AssigneeForst Technologie GmbH & Co. KG
InventorAndreas BERKTOLD
Life of this patent
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Abstract
An internal helical broaching tool has a pre-broaching tool portion extending in one broaching direction and a subsequent precise sizing tool portion. The latter, as a whole, is made of a hard metal with a density of greater than 10 g/cm3. This results in an internal helical broaching tool with increased service life at a defined machining performance.
Claims4
-3. (canceled)
An internal helical broaching tool (1), comprising:
- a pre-broaching tool portion (4) extending in a broaching direction (2), and
- a precise sizing tool portion (5),
- wherein broaching teeth of the pre-broaching tool portion (4) are arranged one behind the other in the broaching direction (2) such that the broaching teeth are arranged obliquely one behind the other along helical broaching paths (12),
- wherein broaching teeth (13) of the precise sizing tool portion (5) are arranged one behind the other, and
- wherein the precise sizing tool portion (5) consists of a hard metal having density that is greater than 10 g/cm3.
2 more elements
Dependencies are inferred from the claim text.