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US 7,395,743 B2Granted
Lathe spindle unit and lathe apparatus
AssigneeSankyo Seisakusho Co.
InventorHeizaburo Kato
Life of this patent
Estimating the term…
Abstract
A lathe spindle unit is provided with: a rotatable spindle having a cam follower, and a holding section for holding a work piece; a drive source for rotatively driving the spindle; and a driven rotation shaft that has a cam and that is rotatively driven by the drive source. The driven rotation shaft rotatively drives the spindle using the cam and the cam follower.
Claims12
A lathe spindle unit comprising:
- a rotatable spindle having a cam follower, and a holding section for holding a work piece;
- a drive source for rotatively driving said spindle;
- a driven rotation shaft that has a cam and that is rotatively driven by said drive source, said driven rotation shaft rotatively driving said spindle using said cam and said cam follower, and a supporting section for rotatably supporting said spindle;
- wherein a first V-shaped groove is formed directly in said spindle along the rotation direction of said spindle, and said supporting section has a second V-shaped groove that is in opposition to said first V-shaped groove;
- and wherein a cross roller bearing is made by interposing, between said spindle and said supporting section, a plurality of rolling elements that roll while being in contact with said first V-shaped groove and said second V-shaped groove, and making the axis of rolling of adjacent rolling elements be perpendicular to one another.
2 more elements
A lathe apparatus comprising:
- a lathe spindle unit provided with a rotatable spindle having a cam follower, and a holding section for holding a work piece, a drive source for rotatively driving said spindle, and a driven rotation shaft that has a cam and that is rotatively driven by said drive source, said driven rotation shaft rotatively driving said spindle using said cam and said cam follower;
- a base for supporting said lathe spindle unit;
- and a tool for machining said work piece, wherein said lathe spindle unit is provided with a supporting section for rotatably supporting said spindle;
- wherein a first V-shaped groove is formed directly in said spindle along the rotation direction of said spindle, and said supporting section has a second V-shaped groove that is in opposition to said first V-shaped groove;
- and wherein a cross roller bearing is made by interposing, between said spindle and said supporting section, a plurality of rolling elements that roll while being in contact with said first V-shaped groove and said second V-shaped groove, and making the axis of rolling of adjacent rolling elements be perpendicular to one another.
2 more elements
A lathe apparatus comprising:
- a lathe spindle unit provided with a rotatable spindle having a cam follower, and a holding section for holding a work piece, a drive source for rotatively driving said spindle, and a driven rotation shaft that has a cam and that is rotatively driven by said drive source, said driven rotation shaft rotatively driving said spindle using said cam and said cam follower;
- a base for supporting said lathe spindle unit;
- and a tool for machining said work piece, wherein said lathe spindle unit is provided with a supporting section for rotatably supporting said spindle;
- wherein a first V-shaped groove is formed directly in said spindle along the rotation direction of said spindle, and said supporting section has a second V-shaped groove that is in opposition to said first V-shaped groove;
- wherein a cross roller bearing is made by interposing, between said spindle and said supporting section, a plurality of rolling elements that roll while being in contact with said first V-shaped groove and said second V-shaped groove, and making the axis of rolling of adjacent rolling elements be perpendicular to one another, wherein said spindle has a hollow section in the rotation-axis direction of said spindle, and wherein said tool is passed through said hollow section, and said work piece being held by said holding section is machined by that tool.
2 more elements
A lathe apparatus comprising:
- a lathe spindle unit provided with a rotatable spindle having a cam follower, and a holding section for holding a work piece, a drive source for rotatively driving said spindle, and a driven rotation shaft that has a cam and that is rotatively driven by said drive source, said driven rotation shaft rotatively driving said spindle using said cam and said cam follower;
- a base for supporting said lathe spindle unit;
- and a tool for machining said work piece, wherein said lathe spindle unit is provided with a supporting section for rotatably supporting said spindle;
- wherein a first V-shaped groove is formed directly in said spindle along the rotation direction of said spindle, and said supporting section has a second V-shaped groove that is in opposition to said first V-shaped groove;
- wherein a cross roller bearing is made by interposing, between said spindle and said supporting section, a plurality of rolling elements that roll while being in contact with said first V-shaped groove and said second V-shaped groove, and making the axis of rolling of adjacent rolling elements be perpendicular to one another, wherein said spindle has a hollow section in the rotation-axis direction of said spindle, and wherein said work piece is held by said holding section in a manner in which said work piece passes through said hollow section, and that work piece is machined by said tool.
2 more elements
Dependencies are inferred from the claim text.