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US 8,020,267 B2Granted
Precision roll turning lathe
AssigneeToshiba Kikai Kabushiki Kaisha
InventorTakanobu Akiyama
Life of this patent
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Abstract
A roll turning lathe is provided herein which can not only machine with high precision circumferential transverse grooves in the peripheral surface of a roll but can also machine with high precision longitudinal grooves in the peripheral surface. The precision roll turning lathe includes a fly cutter spindle device and a tool post having a plurality of cutting tools that are mounted on a tool swivel. By selectively using the tool post and the fly cutter spindle device, high-precision machining of transverse grooves and longitudinal grooves on a roll-shaped workpiece.
Claims8
A precision roll turning lathe comprising:
- a bed;
- a headstock, mounted on the bed, the headstock being configured to rotate a cylindrical workpiece while holding one end of the cylindrical workpiece by means of a chuck, said headstock having an indexing axis (C axis) about which said headstock performs circumferential indexing of the cylindrical workpiece;
- a tail stock, mounted on the bed and disposed opposite the headstock, for rotatably supporting the other end of the cylindrical workpiece;
- a carriage including a saddle mounted on the bed movably in the longitudinal direction (Z-axis direction) of the cylindrical workpiece, and a table mounted on the saddle movably in a direction (X-axis direction) perpendicular to the longitudinal direction of the cylindrical workpiece;
- a tool swivel mounted on the table and having an indexing axis (B axis);
- a tool post mounted on the tool swivel and having a plurality of turning lathe cutting tools attached thereto that are adapted to produce transverse grooves in the cylindrical workpiece;
- and
- a fly cutter spindle device mounted to the tool post and having a spindle for rotating a fly cutter that is adapted to produce longitudinal grooves in the cylindrical workpiece.
5 more elements
Dependencies are inferred from the claim text.