Instrument putting method for cutting tool film-plating process

Abstract

The invention relates to a method of placing the fixture in the coating process of a cutting tool and includes the following steps: the step of providing a vacuum chamber and a target emitter. The target emitter is arranged inside the vacuum chamber and provided with an emitting direction; the step of providing a fixture and a plurality of cutting tools. The cutting tools are arranged in the fixture; and the step of placing the fixture and the cutting tools in the vacuum chamber and leaving a sharp included acute angle formed between the central shafts of the cutting tools and the emitting direction of the target emitter. Therefore, the invention has the advantages of consistent metallic-membrane plating quality, evenly-distributed metallic-membrane plating thickness and increased metallic-membrane plating thickness at the front end of the blade compared with the conventional method.

Description

technical field [0001] The present invention relates to the cutting tool coating process, in particular to a fixture placement method for the cutting tool coating process used in the physical vapor deposition (PVD) coating process. Background technique [0002] A general cutting tool can be divided into a shank and a blade, the shank is used for holding the tool machine, and the blade is used for processing the workpiece. Since the blade is the main part for processing, it must have mechanical properties with a higher hardness than the workpiece in order to achieve the purpose of smooth processing. In order to improve the mechanical properties of the cutting tool, a conventional method is to coat the surface of the cutting tool with a film with a higher hardness, so as to achieve the purpose of improving the hardness of the cutting tool. [0003] As shown in Fig. 1 and Fig. 2, when coating with physical vapor deposition, since it is to simultaneously coat a large number of ...

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Problems solved by technology

However, in this way, under the condition of the same load-bearing area of ​​the coating process jig, the number of cutting tools that can be used for the coating process in each batch is greatly reduced, which has the disadvantage of low single-batch output

Furthermore, this method cannot improve the problem of insufficient coating thickness of the cutting tool at the front end of the blade, so that the blade of the cutting tool still has the disadvantage of being easy to wear (as shown in Figure 2)

[0007] To sum up, the conventional fixture placement method for the cutting tool coating process has the shortcomings of inconsistent coating quality, uneven coating thickness, and insufficient coating thickness at the front end of the blade, which needs to be improved.

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