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AssigneeThk Co., Ltd.
InventorsKiyoshi Suzuki, Takeki Shirai, Chandra Shekhar Sharuma
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The present invention mainly aims to provide cutting method and cutting apparatus for manufacturing a guide rail of a rolling guide device by efficiently cut-working a long scale hardened steel. In order to achieve such object, there is provided a cutting method of linearly cutting a work surface (3) of the long scale hardened steel (2) along the longitudinal direction thereof. In this process, it is desired to arrange a plurality of CBN tools (7) along the longitudinal direction of the long scale hardened steel (2) to thereby sequentially cut the work surface (3). Furthermore, a cutting apparatus of the present invention comprises a fixing device (4) for fixing the long scale hardened steel (2), a tool rest (5) which is guided by a guide device (6) disposed along the longitudinal direction of the fixing device (4) and the CBN tool (7) cut-working the work surface (3) of the long scale hardened steel (2) held by the tool rest (5).
A method of cutting a long scale hardened steel, characterized in that a work surface of a long scale hardened steel along a longitudinal direction thereof is linearly cut by a CBN tool at a cutting speed of approximately 30 m/min. to 160 m/min.
An apparatus for cutting a long scale hardened steel, comprising a fixing device for fixing a long scale hardened steel, a tool rest which is guided by a guide device disposed along the longitudinal direction of the fixing device, and a CBN tool for cutting a work surface of the long scale hardened steel.
Dependencies are inferred from the claim text.