Nozzle structure, blowing device, and method for producing components, bearings, direct-acting devices, steering devices and vehicles
AssigneeNsk Ltd.
InventorKouhei Dobashi
Life of this patent
Estimating the term…
Abstract
Provided is a nozzle structure, a blow device, and a manufacturing method for parts, a bearing, a linear motion device, a steering device, a vehicle, and a mechanical device which can uniformly and satisfactorily perform various processes with fluid over a wide range on a processing target member. The nozzle structure includes an inner member, an outer member surrounding the inner member, and a laminar flow path formed between an outer surface of the inner member and an inner surface of the outer member to allow fluid to flow. The blow device or the mechanical device having the nozzle structure can process the inner member by flowing the fluid in the flow path.
Claims16
A blow device comprising
- a nozzle structure including:
- an outer member surrounding an inner member corresponding to a workpiece, with irregularities in an outer surface of the workpiece;
- and
- a flow path, having a cylindrical shape, formed as a gap between the outer surface of the workpiece and an inner surface of the outer member, through which air fluid flows from a fluid inlet at one axial end of the outer member to a fluid outlet at the other end of the outer member, wherein
- the inner surface of the outer member is formed to a diameter such that the cross-sectional area of the cylindrical channel in the axial vertical section of the workpiece is constant at an arbitrary axial position, and
- a process on the workpiece is performed by flowing the air fluid on at least a part of the flow path along the outer surface of the workpiece.
A blow device comprising:
- a nozzle structure including:
- an outer member surrounding an inner member corresponding to a workpiece, with irregularities in an outer surface of the workpiece;
- and
- a flow path, having a cylindrical shape, formed as a gap between the outer surface of the workpiece and an inner surface of the outer member, through which fluid flows from a fluid inlet at one axial end of the outer member to a fluid outlet at the other end of the outer member, wherein
- the inner surface of the outer member is formed to a diameter such that the cross-sectional area of the cylindrical channel in the axial vertical section of the workpiece is constant at an arbitrary axial position,
- a process on the workpiece is performed by flowing the fluid on at least a part of the flow path along the outer surface of the workpiece, and
- the outer member has a protrusion accommodating recess portion for accommodating the protrusion part of the workpiece, the protrusion accommodating recess portion being defined by first and second tapered wall surfaces and a cylindrical wall surface axially disposed between the first and second tapered surfaces such that the gap of the flow path is gradually reduced in a radial direction toward an outer peripheral side of the workpiece.
Dependencies are inferred from the claim text.