JPH04201009A - Separation process of material to be processed - Google Patents

Abstract

PURPOSE:To improve the quality of a material to be processed by leaving a thin flash on an outer peripheral bottom part at the final stage of the outer peripheral process of the material to be processed, and then by separating the flash and processing it through a tool which is of spherical shape in the end, on the same machine. CONSTITUTION:A material 1 fixed to a jig disc 3 is processed by NC processing, and at the final stage thereof, a groove 6 is cut into an outer peripheral shape that forms a molded article 2, and a thin flash 5 is left on the outer peripheral bottom part of a material to be processed by approximately 0.2mm. The flash 5 is cut by a ball end mill 4 inserted into the groove 6 by utilizing the same NC data. since the power is applied at point connection at the time of separating the flash 5, the molded article 2 is not moved, and the quality can be improved without using a pressing jig.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing metal material products, particularly a wristwatch exterior model, and separating the product from a workpiece.

[Summary of the invention]

This invention consists of a process of machining the outer periphery of a workpiece using a machine tool, a process of leaving a thin firmness at the bottom of the outer periphery at the final stage of peripheral machining, and a process of separating the workpiece using a spherical tip tool on the same machine. This is a processing method that allows easy separation.

[Conventional technology]

Conventionally, as shown in Figure 2, a watch exterior case model was machined from the workpiece using an NC machine tool, and the molded product was hardened to the outer circumference to ensure the shape and prevent it from separating from the jig board. Add 5 and process. After that, the operator had to perform manual separation work as a post-process.

[Problem to be solved by the invention]

The above-mentioned processing method increases the number of processing jigs and tools for separation and post-processing, and there is a quality problem in that the molded product is damaged during separation.

[Means to solve the problem]

In order to solve the above problem, after the workpiece is formed, a burr cutting process is added using NC processing data of the outer circumferential shape.

C effect] By adding the process as mentioned above, the work can be streamlined,
Stable quality can be obtained.

C Example] Embodiments of the present invention will be described below based on the drawings.

In FIG. 2, material 1 is fixed on a jig board.

Next, the workpiece is processed by NC machining, and in the final stage of processing, the shape of the outer periphery is cut, and a thin wall 5 is placed at the bottom of the outer periphery of the workpiece with a thickness of 0.1 to 0.1 to 0.3
mm, preferably 0.15 to 0.20 mm. In FIG. 1, the same NC data is used for the groove 6 after cutting on the outer circumferential shape of the workpiece that has been processed, and one process for cutting the edge 5 with a ball end mill is added. Since the ball end mill makes point contact with the burr 5 and applies processing force, the workpiece does not move during separation, so there is no need to use a holding jig during separation.

〔Effect of the invention〕

When processed using the processing method configured as described above, there is no need for conventional post-processing, and since the wall thickness of the burr is small, cutting resistance is small and the durability of the cutting tool is good.

Therefore, the material of the workpiece is not selected, and the larger the number of products produced, the greater the effect can be achieved.

[Brief explanation of the drawing]

FIG. 1 shows a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 shows a longitudinal sectional view of a conventional specification example. ■...Material 2...Molded product 3...Jig board 4...Ball end mill 5 ・ ・ ・Burr 6...Groove and above Applicant Seiko Electronic Industries Co., Ltd. Agent Patent attorney Keinosuke Hayashi

Claims (1)

[Claims] In the forming process of a base material using a machine tool, the process includes a step of processing the outer periphery of the workpiece, a step of processing the outer periphery while leaving a thin burr on the bottom of the outer periphery, and a step of cutting off the burr on the same machine. A method for separating a workpiece material, characterized by the following.