JP2006015467A - Work holder of fine hole processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work holder of a fine hole processing apparatus, which can improve the machining accuracy for a V surface edge and the internal diameter of an axial through-hole by carrying out an appropriate rounding operation for the connecting portion of a V surface and the axial through-hole, that is the V surface edge, without enlarging the inside diameter by unnecessarily excessively machining the axial through-hole. <P>SOLUTION: The work holder of the fine hole processing apparatus comprises a first holder 5 having a slurry inlet path 16 provided with an aperture 1 facing the V surface 12 of a workpiece 10, the workpiece 10 having the concave conical V surface 12 and the axial through-hole 11 communicated with the V surface 12, and a second holder 6 having a work holding hole 15, into which the workpiece can be inserted, and a slurry outlet path 17 formed therein. The V surface 12 is separated from the aperture 1 of the slurry inlet path 16 by the distance corresponding to at least the outside diameter d1 of the V surface. In addition, a slurry discharging path 2 is provided between the V surface 12 and the aperture 1 of the slurry inlet path 16. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is an inner surface treatment (polishing, cleaning, deburring, corner R forming, chamfering, surface treatment) of a part having a hole composed of a round hole, a square hole, a straight hole, a taper hole, a bent hole or the like of φ5.0 mm or less. It is related with the workpiece holder of the processing apparatus of a fine hole using the slurry which put only the solvent or the surface processing additive containing an abrasive grain, a plastic material, and / or a glass material in a solvent.

For example, Patent Document 1 discloses a work holder of a conventional processing apparatus for fine holes. FIG. 2 (a) shows a workpiece holder of the fine hole processing apparatus of FIG. 5 of Patent Document 1 having a concave conical V surface 12 and an axial through hole 11 of φ5.0 mm or less communicating with the V surface 12. 10 is a partial cross-sectional view of the main part applied to FIG. This work holder includes a main body 14 (first holder) having a slurry inflow passage 16 provided with an opening 1 facing the V surface 12 of the work 10, a work holding hole 15 and a work holding hole 15 capable of filling the work. And a lid 13 (second holder) in which a slurry outflow passage 17 communicating with the axial through hole 11 is formed. The main body 14 may be a lid, and the lid 13 may be the main body.
JP 2004-1211 A

However, in the work holder shown in FIG. 2A using Patent Document 1, as shown in the operation explanatory view shown in FIG. 2B, the pressure from the opening 1 of the slurry inflow passage 16 is, for example, 10 MPa. The processed slurry flows into the axial through hole 11 as it is after the connecting portion 3 between the V surface 12 and the axial through hole 11 is processed, that is, the V surface edge 3. The entire flow of the slurry shown in FIG. 2 (c) is shown in the partial cross-sectional view 20 near the V-plane 12 in FIG. And the machining accuracy of the inner diameter of the V surface edge 3 and the axial through hole 11 was deteriorated.
The object of the present invention is to solve the above-mentioned problems of the prior art, and to perform an appropriate R machining of the connection portion between the V surface and the axial through hole, that is, the V surface edge, and to process the axial through hole more than necessary. Accordingly, it is an object of the present invention to provide a work holder for a fine hole processing apparatus that does not increase the inner diameter and improves the processing accuracy of the inner diameter of the V-plane edge and the axial through hole.

  For this reason, according to the present invention, the first holding tool having the slurry inflow path provided with the opening facing the V surface of the workpiece having the concave conical V surface and the axial through hole communicating with the V surface, A workpiece holding hole and a second holding tool formed with a slurry outflow passage communicating with the axial through hole behind the workpiece holding hole. Workpiece of fine hole processing apparatus characterized in that at least a V-plane outer diameter is separated from the opening of the passage, and a slurry discharge passage is provided between the V-surface and the opening of the slurry inflow passage. By providing the holder, the above-described problems of the prior art have been solved.

  In the present invention, the V surface and the opening of the slurry inflow passage are separated by at least the outer diameter of the V surface, and the slurry discharge passage is provided between the V surface and the opening of the slurry inflow passage. Slurry ejected from the opening of the inflow passage hits the V plane, and the connecting portion between the V plane and the axial through hole, that is, an appropriate R machining of the V plane edge was performed, and an appropriate R machining of the V plane edge was performed. After that, most of the slurry that hits the V surface flows out of the slurry discharge path, so the amount of slurry passing through the axial through hole is reduced, and the amount of processing of the inner diameter of the axial through hole by the slurry is reduced, which is more than necessary The present invention provides a work holder for a fine hole processing apparatus in which the inner diameter of an axial through hole is not processed to expand the inner diameter, and the machining accuracy of the V surface edge and the inner diameter of the axial through hole is improved.

  Preferably, the inner diameter of the opening of the slurry inflow path may be in a range from the inner diameter of the through hole in the axial direction to the outer diameter of the V plane.

  FIG. 1A is a workpiece holder of a fine hole processing apparatus which is the best mode for carrying out the present invention, FIG. 1B is an operation explanatory view thereof, and FIG. 1C is a partial sectional view in the vicinity of a V plane 12. Each is shown. The workpiece holder of the fine hole processing apparatus according to the best mode for carrying out the present invention has a concave conical V surface 12 and a workpiece 10 having an axial through hole 11 of φ5.0 mm or less communicating with the V surface 12. A first holding tool 5 having a slurry inflow passage 16 provided with an opening 4 facing the V surface 12, a work holding hole 15 capable of filling a work, and a slurry communicating with the axial through hole 11 behind the work holding hole 15. In the present invention, the V surface 12 and the opening 1 of the slurry inflow channel 16 are separated from each other by at least a V surface outer diameter d1, and V A slurry discharge path 2 is provided between the surface 12 and the opening 1 of the slurry inflow path 16.

  As shown in FIG. 1 (b), in operation, for example, 10 MPa and pressurized slurry ejected from the opening 1 of the slurry inflow passage 16 hit the V surface 12, and as shown in FIG. 1 (c), Appropriate R machining 7 was performed on the connecting portion 3 between the V surface 12 and the axial through-hole 11, that is, the V surface edge 3, and after moderate R machining 7 was performed on the V surface edge 3, the V surface 12 was hit. Since most of the slurry flows out of the slurry discharge passage 2 as shown by the arrow 4, the amount of slurry passing through the inner diameter of the axial through hole 11 is reduced, and the processing amount of the inner diameter of the axial through hole 11 by the slurry is reduced. A work holder for a fine hole processing apparatus that does not increase the inner diameter of the axial through-hole 11 more than necessary and increases the processing accuracy of the inner diameter of the V-surface edge 3 and the axial through-hole 11. It became something to offer.

  The inner diameter d2 of the opening of the slurry inflow path 16 may be in a range from the inner diameter d3 of the axial through hole 11 to the outer diameter d1 of the V surface.

(A) is a workpiece holder of the fine hole processing apparatus which is the best mode for carrying out the present invention, (b) is an operation explanatory view thereof, and (c) is a partial sectional view in the vicinity of the V plane. (A) is a fragmentary partial cross-sectional view in which the work holder of the fine hole processing apparatus of FIG. 5 of Patent Document 1 is applied to a work having a concave conical V-plane and a V-plane through-hole in the communication axial direction; ) Is a diagram for explaining the operation, and FIG.

Explanation of symbols

1: Opening portion of slurry inflow path 2: Slurry discharge path 3: V surface edge 5: First holding tool 6: Second holding tool 10: Work 11: Axial through hole 12: V surface 16: Slurry inflow path 17: Slurry outflow passage

Claims (2)

  A first holder having a slurry inflow passage provided with an opening facing the V surface of a workpiece having a concave conical V surface and an axial through hole communicating with the V surface, a workpiece holding hole capable of filling a workpiece, and a workpiece holding And a second holder having a slurry outflow passage communicating with the axial through hole at the rear of the hole, and a work holder of the fine hole processing apparatus, wherein the gap between the V surface and the opening of the slurry inlet passage Is a workpiece holder for a processing apparatus for fine holes, characterized in that a slurry discharge path is provided between the V plane and the opening of the slurry inflow path.   The work holder of the fine hole processing apparatus according to claim 1, wherein an inner diameter of the opening of the slurry inflow path ranges from an inner diameter of the through hole in the axial direction to an outer diameter of the V plane.

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