JP2717608B2 - Inner surface processing method for thin cylindrical workpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for machining an inner surface of a thin cylindrical workpiece.

[0002]

2. Description of the Related Art Conventionally, when turning an inner surface of a tapered thin cylindrical work W as shown in FIG. 5 of a thin cylindrical shape, for example, the work is deformed if the work W is directly gripped by a chuck. In the mounting setup sleeve 101 having the same size as the outer shape of the workpiece, the inner surface is processed by holding the sleeve with the chuck while the workpiece is inserted.

[0003]

In the conventional method of inserting a tapered thin cylindrical workpiece into a setup sleeve and performing inner surface machining, it is difficult to remove the workpiece after machining, and the workpiece is distorted at the time of removal. There is a problem in that a large number of sleeves are required according to the outer diameter of the work. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and has as its object to facilitate removal and reduce the number of setups, and furthermore, to provide a thin-walled multi-layer structure which has a gap and overlaps. It is an object of the present invention to provide a method of processing an inner surface of a thin cylindrical work most suitable for the work.

[0004]

In order to achieve the above object, a method for processing the inner surface of a thin cylindrical workpiece according to the present invention is directed to an inner peripheral surface of a mounting setup sleeve formed to have an inner diameter larger than the outer diameter of the thin cylindrical workpiece. Or, apply a liquid resin that can be easily melted after curing to the outer periphery of the work, and process the surface of the resin so that the work can be concentrically inserted into the sleeve after or during the curing of the resin. To form a resin layer, insert the work into the sleeve via the resin layer, grip the sleeve with a chuck to process the inner surface of the work, and after processing, melt the resin layer and take out the work. Things. In addition, a plurality of thin cylindrical workpieces whose diameters gradually become smaller can be stacked and inserted into the mounting setup sleeve via the resin layer in order from the largest one.

[0005]

[Function] A water-soluble resin is uniformly applied to the outer periphery of the tapered thin cylindrical work or the inner periphery of the mounting setup sleeve,
After the resin is cured or during curing, the work is cut so that the work can be concentrically inserted into the sleeve, a resin layer is formed, and the inner surface is processed while the work is inserted into the sleeve. Dissolve the resin layer with water and remove the work.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. A chuck 2 is concentrically fitted to the tip of a spindle rotatably supported on a headstock 1 of a lathe.
The mounting setup sleeve 3 is detachably gripped by the gripping claws 2a. On the other hand, a saddle 4 having a guide in the X-axis direction is provided on a bed (not shown) of the lathe so as to be movable and positionable, and a tool post 5 is provided on the X-axis guide so as to be movable. A turret 6 is provided on the tool post 5 so as to be able to rotate around a center axis in the Z-axis direction. The turret 6 has a plurality of tool mounting stations on a circumference.
A tool T is detachably attached to the tool attachment station.

As shown in FIG. 2, the mounting set-up sleeve 3 has a tapered hole 3a which stops at a point, and a left-side grip portion which does not cause gripping distortion when gripped by the chuck 2 has a solid structure. I have. The inner diameter of the hole 3a is formed to be several mm larger than the outer diameter of the tapered thin cylindrical work WA, and fills the gap between the hole 3a and the work WA at the time of insertion into the inner periphery of the hole 3a or the outer periphery of the work W. A water-soluble resin layer 7 that keeps concentricity is coated. The water-soluble resin 7 is, for example, a photocurable resin 3046 manufactured by Three Bond Co., Ltd.
A commercially available product such as a system can be used.

Next, the operation of the first embodiment will be described. First, a liquid resin is applied to the outer circumference of the work WA or the inner circumference of the sleeve 3 substantially uniformly, and after curing by irradiating ultraviolet rays, or during the curing, the inner diameter of the sleeve 3 or the outer diameter of the work WA is compared. The resin layer 7 is formed by cutting according to the dimensions. Next, the work WA is inserted into the sleeve 3 via the resin layer 7, the sleeve 3 is gripped by the chuck 2, the inner diameter of the work WA is processed, and after the processing, the resin layer 7 is dissolved with water to remove the work W.

Next, a second embodiment will be described. In the second embodiment, for example, as shown in FIG. 4, a gap is narrow when overlapped, and a substrate of the mirror 11 of the multiple thin plate X-ray telescope which requires several tens of mirrors 11 having different angles is cut. In this method, a plurality of tapered thin cylindrical workpieces WB, each of which has a gap and whose overlapping diameter gradually decreases, are formed on a sleeve 3 with a water-soluble resin layer 7 interposed therebetween. An inner diameter process is performed by inserting the largest work, and a smaller work WB is sequentially inserted into the processed work WB via a resin layer to perform an inner diameter process. Then, after the entire processing is completed, the resin layer is dissolved with water to remove a plurality of works WB, and the same portions as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the above embodiment, an example of a tapered thin-walled cylindrical work has been described. However, a resin is applied to the outer periphery of the work and the inner periphery of the mounting setup sleeve, and the surfaces of both resins are joined to each other after or during curing. After processing into a tapered shape that fits
If a work is inserted into the mounting setup sleeve and the inner surface of the work is machined, it can be applied to a thin cylindrical shape other than the tapered shape.

[0011]

Since the present invention is configured as described above, the following effects can be obtained. When a work is inserted into the mounting setup sleeve to perform processing, a water-soluble resin layer is provided on the inner periphery of the sleeve or the outer periphery of the work, and the work is inserted into the sleeve via the resin layer. It is possible to cope with the case where the dimensions are slightly changed, and the number of mounting setups can be reduced. Further, since the work is removed by dissolving the resin layer with water after the processing, the work becomes easy to remove and the shape accuracy of the work by the external force at the time of removal does not decrease. Furthermore, when processing multiple thin-walled workpieces, it is possible to process a large number of workpieces with a single installation setup, since the sleeve diameter is set to be larger than the diameter of the sleeve, so that the number of setups and the setup time can be reduced. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a partial view of a lathe showing a headstock holding a mounting setup sleeve of the present embodiment and a tool rest having a boring tool.

FIG. 2 is a perspective view of a mounting setup sleeve and a work.

FIG. 3 is a perspective view showing a state in which a multi-layered thin cylindrical workpiece is inserted into a mounting setup sleeve.

FIG. 4 is a configuration diagram of a mirror of the multiple thin plate type X-ray telescope.

FIG. 5 is an oblique view of a conventional installation setup sleeve and a work.

[Explanation of symbols]

 2 Chuck 3 Sleeve 5 Tool post 7 Resin layer WA, WB Work T Tool

Claims (2)

(57) [Claims] 1. A liquid resin which can be easily melted after curing is applied to the inner periphery of an installation setup sleeve formed to have an inner diameter larger than the outer diameter of a thin-walled cylindrical work or the outer periphery of the work, and the resin is cured. After or during curing, the surface of the resin is processed to form a resin layer so that the work can be concentrically inserted into the sleeve, and the work is inserted into the sleeve via the resin layer, and the sleeve is inserted. And processing the inner surface of the work by gripping the workpiece with a chuck. After the processing, the resin layer is melted and the work is taken out. 2. The method according to claim 1, wherein a plurality of thin-walled cylindrical workpieces having a gradually decreasing diameter are inserted into the mounting setup sleeve in order from the largest one via a resin layer. Inner surface processing method for thin cylindrical workpiece.