JPS5820752B2 - Manufacturing method of jig for abrasive flow processing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an abrasive fluid processing jig for processing by flowing a processing medium containing abrasive grains.

Recently, surface polishing has been developed by applying pressure to a processing medium made by kneading a semi-solid viscoelastic material, such as silicone rubber, with abrasive grains such as alumina oxide or boron carbide, and moving it along the surface of the workpiece. Abrasive flow processing, which performs deburring and deburring processing, is being adopted, and this is an excellent processing method that can easily polish complex curved surfaces.

However, in order to precisely polish a complex curved surface using this process, a medium flow path is formed in the processing jig that corresponds to the curved surface and has uniform intervals through which the processing medium flows. It is necessary to press and move the medium with equal pressure over the entire machined surface, but in the past, the medium flow path was formed in the processing jig by cutting, so it was difficult to polish a complex curved surface. It was not possible to manufacture processing jigs with high precision and efficiency.

This invention was made based on the above circumstances, and its purpose is to form a main body core that is larger than the workpiece by the amount of the medium flow path by attaching a core member to the processing part of the workpiece. The main body core is shaped from a soluble synthetic resin, and then the core member is removed to form a processing jig with a medium flow path, which is easy to manufacture. It is an object of the present invention to provide a method for manufacturing a jig for abrasive flow processing with excellent precision in medium flow paths.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In the figure, reference numeral 1 denotes a workpiece, and now a method for manufacturing a processing jig used for polishing complex curved surfaces 1a and 1b of the workpiece 1 by abrasive flow processing will be described.

First, as shown in FIG.
A clay adjusted to be easily deformable is applied to cover these parts (b) so that its thickness is approximately equal to the width of the channel.

Therefore, in the portions corresponding to the curved surfaces 1a and 1b,
The part indicated by the chain line in the figure is formed to be large, and a main body core 2 is formed in which channel cores 2a and 2b for the channel type are provided.

Next, after drying the main body core 2, it is fixed in a frame 3 as shown in FIG. Take the shape.

When the synthetic resin 4 solidifies, the frame 3 is disassembled,
The channel cores 2a and 2b are crushed by appropriate means to form a synthetic resin 4.
By removing it from the inside, it is possible to manufacture a machining jig 5 with a built-in workpiece 1 as shown in FIG.

As shown in FIG. 5, the processing jig 5 manufactured in this manner has a structure in which the curved surfaces 1a and 1b of the workpiece 1 held by the synthetic resin 4 and the curved surfaces 5a and 5b of the processing jig 5 are A uniform width interval is formed therebetween, that is, medium flow channels 6a and 6b corresponding to the channel cores 2 provided in the main body core 2 are formed.

If a pressurized processing medium (not shown) is caused to flow through the medium channels 6a and 6b by appropriate means,
This machining medium moves against the curved surfaces 1a and 1b of the workpiece 1 with equal pressure, thereby achieving good abrasive flow machining.

In addition, in the above embodiment, the channel cores 2a, 2
Although clay was used as b, the channel core 2 in this invention
A and 2b are not limited to these, but flow channel cores 2a and 2b may be those that can be easily removed by heat or solvent, such as those that have a brazing material attached to them to form a channel type.
Then, the processing jig 5 may be manufactured from the synthetic resin 4 in the same manner as described above.

As described above, in this invention, a flow path core is attached to a workpiece to form a main body core that is larger than the workpiece by the amount of the medium flow path, and this main body core is made of a soluble synthetic material. The present invention is characterized in that a processing jig with a medium flow path is formed by shaping the shape with resin and then removing the flow path core.

Therefore, the present invention has great practical value in that it is possible to easily and accurately manufacture a processing jig for performing abrasive flow processing on a complex curved surface, which has been extremely difficult to manufacture in the past.

In addition, since the workpiece is directly used as the core, the unprocessed part is tightly covered with synthetic resin, so it is completely protected, and this is especially effective when the workpiece is left in the jig as in this example. Remarkable.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of a workpiece, Fig. 2 is a front view of the main body core, and Fig. 3 is a part showing the manufacturing process of a processing jig. Explanatory diagram with a cross section, No. 4
The figure is a perspective view of the processing jig, and FIG. 5 is a partially sectional front view showing a state in which a workpiece is housed in the processing jig. 1... Workpiece, 2... Main body core, 2a, 2b...
・Channel core, 4...Synthetic resin, 5...Processing jig,
6a. 6b...Medium flow path.

Claims (1)

[Claims] 1 A flow path core that forms a medium flow path is attached to the workpiece to be processed by abrasive flow processing, and a main body core that is larger than the workpiece by the size of the medium flow path is formed together with the workpiece. A method of manufacturing a jig for abrasive flow processing, characterized in that the main body core is shaped from a soluble synthetic resin and then the channel core is removed.