JP2006231472A - Electrolytic abrasive polishing method for blade member having three-dimensional free-form surfaces - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polishing method for carrying out uniform electrolytic abrasive polishing of a blade member, in a manner firmly fixing the blade member without the risk of disengagement of a polishing tool from the blade member. <P>SOLUTION: According to the electrolytic abrasive polishing method for the blade member having the three-dimensional free-form surfaces, the blade member which is formed of a plurality of blades each having the three-dimensional free-form surface, is arranged in a block so as to be connected to the block at a plurality of locations, and the three-dimensional free-form surfaces of the blade member arranged in the block is subjected to the electrolytic abrasive polishing, followed by separating the blade member from the block at the connection locations. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a method for polishing a wing member having a plurality of three-dimensional curved surfaces.

A method of mirror polishing a member having a three-dimensional free-form surface by electrolytic abrasive polishing has been proposed. An artificial heart pump is described using the three-dimensional free-form surface as an example of polishing a member.
(See Patent Document 1).
Japanese Patent Laying-Open No. 2004-299029 (Claims 1 and 4 of the Claims [0019], FIGS. 1, 2 and 4)

However, the above prior art does not disclose a problem or a means for solving the problem when specifically polishing electrolytic abrasive grains on a blade member composed of a plurality of blades having a three-dimensional curved surface.
That is, when electrolytic blade polishing is performed on a blade member composed of a plurality of blades having a three-dimensional curved surface, the blade member alone has a complicated shape and is difficult to fix. Since the tip of the blade is cantilevered, it is deformed when a force is applied during polishing, and sufficient polishing cannot be performed. Further, as shown in FIG. 2B, the polishing tool escapes and there is a problem that uniform polishing cannot be performed.

Therefore, in view of the above points, the present invention makes it possible to firmly fix the wing member, prevent the tip of the wing from being cantilevered during polishing, and prevent the polishing tool from escaping, and uniform electrolytic abrasive polishing. An object of the present invention is to provide a polishing method that can be used.

The method for polishing electrolytic abrasive grains of a wing member having a three-dimensional free-form surface according to the present invention comprises a plurality of wings, each of which has a plurality of three-dimensional free-form surfaces. The wing member is formed with a plurality of connection portions, and after the three-dimensional free-form surface of the wing member formed in the block is subjected to electrolytic abrasive polishing, the wing member is separated from the plurality of connection portions.

According to the above configuration, since the wing member polishes the wing member formed inside the block, the wing member can be stably polished without being deformed by the pressing pressure of the polishing tool when the wing member is polished. Become. Further, if the connecting portion between the wing member and the block is the tip of the wing, the wing will not be deformed by cantilevering. In addition, it is difficult to fix the wing member alone when it is automatically polished, but the fixing with the block is firm. In addition, when machining the wing parts by machining, forming in the block enables stable machining.

Furthermore, the electrolytic abrasive polishing method for a wing member having a three-dimensional free-form surface is the method of claim 1, wherein the plurality of wing members formed in the block are opposed to the wing surface in the block. And the block wall surface is formed so as to be equidistant with respect to the three-dimensional free-form surface of the blade, and the polishing tool is used to form the three-dimensional free-form surface of the blade member. When electrolytic polishing is performed, electrolytic polishing is performed such that the center of the polishing tool is the center of the predetermined interval.

According to the above configuration, the block wall surface is formed at a predetermined interval in the block so as to face the blade surface, and the block wall surface is equidistant with respect to the three-dimensional free-form surface of the blade. Since the polishing tool is polished so that the center of the polishing tool is at the center of the predetermined interval, the polishing tool can be prevented from escaping, and polishing can be performed with uniform force anywhere on the polishing surface of the wing member. Abrasive polishing can be achieved.

  Embodiments of the present invention will be described below.

The present invention has a first feature based on claim 1 and a second feature based on claim 2.
1- (a) to (c) are for explaining the first feature of the present invention.
The first feature will be described in detail based on FIGS. 1- (a) to (c).
FIG. 1- (a) shows a specific example in which the wing member 1 is formed in the block 2. In the figure, a wing member 1 is connected to a block 2 at a connection point 3. As is apparent from the figure, since the block 2 is a rectangular rectangular parallelepiped, the block fixing guide groove 7 formed in the block 2 is used as a reference to manufacture the wing member 1 in the block 2 by machining. Since the wing member 1 can be fixed, the coordinates of the wing member 1 can be read accurately, and the manufacture of the wing member 1 can be processed with high dimensional accuracy.
FIG. 1- (b) shows a state where the blade member 1 formed in the block 2 shown in FIG. 1- (a) is subjected to electrolytic abrasive polishing. The state of the polishing will be described in detail later with reference to FIG. 2 (a), but the blade member 1 can be fixed on the basis of the fixed guide groove 7 formed in the block 2 during the electrolytic abrasive polishing. The coordinates of 1 can be read accurately, and uniform polishing is possible. Further, since the tip of the wing member 1 is fixed to the block 2 at the connection point 3, when the tip of the wing 1-1 of the wing member 1 is polished, it cannot be cantilevered and can be polished without deformation. It becomes.
FIG. 1- (c) shows the wing member 1 that has been subjected to electrolytic abrasive grain polishing, in which the wing member 1 is cut off from the block 2 at the connection point 3. As is clear from the figure, the separation work can be easily performed by ordinary machining.
As described above, the first feature based on the first aspect of the present invention, that is, the wing member 1 polishes the wing member 1 formed inside the block 2, and therefore, when the wing member 1 is polished, a polishing tool 4 is used. Stable polishing is possible without being deformed by the pressing pressure. Further, if the connecting portion 3 between the wing member 1 and the block is the tip of the wing 1-1, the wing is not deformed by cantilever. In addition, it is difficult to fix the blade member 1 alone when it is automatically polished, but the block 2 is firmly fixed. In addition, even when the wing member 1 is machined, forming it in the block 2 enables stable machining.
In addition, in the above, the wing | blade member 1 shown to FIG. 1- (c) is an example, and if the wing | blade 1-1 is a several thing, the shape will not ask | require.
The block 2 and the blade member 1 are made of the same material, and the blade member 1 can be made of titanium (Ti), stainless steel, molybdenum (Mo), tantalum (Ta), tungsten (W), or the like.

FIGS. 2A to 2B are for explaining the second feature based on claim 2 of the present invention.
FIG. 2- (a) shows a second feature of the present invention based on claim 2 of the present invention.
FIG. 2- (b) shows a state where the blade surface 6 of the blade member 1 is electrolytically polished by a normal polishing method.
In the normal polishing shown in FIG. 2B, the polishing tool 4 escapes due to the polishing pressure, and uniform polishing cannot be performed.
In the electrolytic abrasive polishing method of the present invention shown in FIG. 2- (a), a block wall surface 5 is formed at a predetermined interval X on the opposing surface of the blade surface 6 of the blade member 1, and The predetermined interval X is formed at an equal distance so as to be the same distance X everywhere on the blade surface 6 facing the block wall surface 5. In the electrolytic abrasive polishing, the diameter center m of the polishing tool 5 is predetermined. Electrolytic abrasive polishing is always performed so as to be at the center n of the interval X. Then, the polishing pressure of the polishing tool 4 becomes equal between the blade surface 6 and the block wall surface 5, and uniform polishing can be realized without unevenness of the blade surface.
As described above, the second feature based on the second aspect of the present invention, that is, the block wall surface 5 is formed in the block 2 at a predetermined interval facing the blade surface 6, and the block wall surface 5 is formed. Is formed so as to be equidistant with respect to the three-dimensional free-form surface of the blade, and polishing is performed so that the center of the polishing tool 4 is centered at a predetermined interval. Polishing can be performed with a uniform force anywhere on the surface, and uniform electrolytic abrasive polishing can be achieved.

In addition, the electrolytic abrasive grain polishing method of the wing member 1 having a three-dimensional free-form surface according to the present invention has the same effect even when it is manually polished and automatically polished. A specific example of manual polishing is disclosed in Japanese Patent Application Laid-Open No. 2004-299029, and a specific example of automatic polishing is disclosed in Japanese Patent Application No. 2005-050619.

  The blade member 1 of the present invention is formed in the block 2, and the block wall surface 5 is formed at a predetermined equal interval on the surface of the blade member 1 facing the blade surface 6. Since the electrolytic abrasive grain polishing is performed so as to be at the center n at a predetermined equal interval, the blade 1-1 can be uniformly and stably polished, and the blade member having a plurality of three-dimensional free-form surfaces can be precisely polished. It is a great place to contribute.

The example which formed the wing | blade member 1 in the block 2 of this invention is shown. The mode that the wing | blade member 1 formed in the block 2 of this invention grind | polishes electrolytic abrasive grain is shown. The wing | blade member 1 cut | disconnected from the block 2 by the connection location 3 of this invention is shown. The second feature of the present invention based on claim 2 of the present invention is shown. The state where the surface of the wing member 1 is subjected to electrolytic abrasive polishing by a normal polishing method is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blade member which has a three-dimensional free-form surface 1-1 Blade of blade member 2 Block 3 Connection point of blade member and block 4 Polishing tool 5 Block wall surface 6 Blade surface of blade member 7 Block fixed guide groove m Center n of polishing tool diameter Center of clearance between blade surface and block wall surface X Predetermined gap length

Claims (2)

A plurality of wings are formed, and the surfaces of the plurality of wings are each formed with a plurality of three-dimensional free-form surface wing members having a plurality of connection portions in the block, and are formed in the block. An electrolytic abrasive polishing method for a blade member having a three-dimensional free-form surface, wherein the blade member is separated from a plurality of connection locations after the three-dimensional free-form surface of the blade member is subjected to electrolytic abrasive polishing. The plurality of wing members formed in the block have block wall surfaces formed at predetermined intervals in the block so as to face the wing surfaces, and the block wall surfaces are formed into three-dimensional free-form surfaces of the wings. When polishing the three-dimensional free-form surface of the wing member using the polishing tool, the abrasive grains are polished so that the center of the polishing tool is the center of the predetermined interval. The method for polishing electrolytic abrasive grains of a wing member having a three-dimensional free-form surface according to claim 1.