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US 8,702,358 B2Granted
Tool holder fixing structure
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKoji Yamada, Toshitaka Kamikubo, Kiyotaka Shiga, Yoshihito Yamaguchi
Life of this patent
Estimating the term…
Abstract
A tool holder fixing structure is arranged to fix a tool holder for holding a tool attached with a throwaway tip to a tool-holder holding part of a machine tool so that a foreign-matter receiving clearance is provided between the tool holder and the tool-holder holding part. The foreign-matter receiving clearance is defined in a range of +30° to −30° from a cutting-edge position of the throwaway tip assumed as an original point and in a range of 150° to 210° from the original point, respectively.
Claims5
A tool holder fixing structure comprising:
- a tool including a cutting blade, a tool holder for holding the tool, and a tool-holder holding part of a machine tool for fixing the tool holder to the machine tool, and
- the tool holder and the tool-holder holding part have contact surfaces configured to form a clearance therebetween for receiving foreign matters,
- wherein
- the foreign-matter receiving clearance is provided in an entire angular region in a circumferential range of +30° and −30° from a point of a cutting edge of the cutting blade assumed as an original point and in an entire angular region in a circumferential range of 150° or more and 210° or less from the original point in a diametrical cross-section of the tool holder, and at a center of contact surfaces of the tool holder and the tool-holder holding part in an axial direction of the tool holder.
1 more element
Dependencies are inferred from the claim text.