KR102118319B1 - Tapering jig for evenly coating on working blade of tool - Google Patents

Abstract

The diagonal jig for uniform coating of a tool used in the ion plating apparatus of the present invention is rotatably coupled by a plurality of rotating shafts that rotate in engagement with a gear of a turntable that rotates the entire jig, and a tool is mounted on which the tool is placed A disc including a hole, fixed to the rotating shaft and rotated by the rotating shaft, has a ring gear extending to the tool mounting hole, a gear coupled with the ring gear and a gear coupling method, and the rotation of the ring gear It is rotated by and includes an adapter having a hole for inserting and fixing a tool. The coating speed can be increased by rotating two motions of the original plate and the tool. In addition, a thick film coating may be coated on the cutting edge portion and the blade side portion of the tool with a uniform thickness.

Description

Tapping jig for evenly coating on working blade of tool

The present invention relates to a diagonal jig for uniform coating of a tool, and more particularly, to a coated diagonal jig capable of quickly coating a more dense and uniform thickness on the upper and side surfaces of a cutting edge of a tool.

As a result of the cutting test after the ta-C thick film coating process was performed on a cutting tool (100 mm long × 30 mm long × 6 mm in diameter), which is a material for machining a carbon material, the ta-C thick film coating tool compared to the uncoated (12Hr 5min) It was confirmed that (23Hr 45min) had a life twice as high. The thickness of the thick film coating is preferably 0.3 to 1.0 μm.

The coating speed is slow when the thick film coating is performed in the title of the invention of the application number 10-2017-0089478 filed by the applicant of the present invention in the "Peeling apparatus and method for ta-C coating using a linear ion source", and thus plasma for a long time When exposed to, there was a problem that the cutting edge of the tool is deformed due to an increase in temperature, and the coating film is non-uniform, and particularly, the coating film is more non-uniform on the top and side surfaces of the cutting edge of the tool.

For the thick film coating method, the patent registration number 10-0362529 (registration date November 13, 2002) includes sputtering, including a primary sputtering coating step to form a base coating film and a vacuum deposition step to be formed at a faster rate than the sputtering method. A technique is known to secure the problems of the law by a vacuum deposition method.

However, this can increase the coating speed to some extent, but it does not make the coating quick and uniform on the top and side surfaces of the cutting edge of the tool.

Therefore, there is a need for a means to coat the cutting edge portion of the tool quickly and uniformly.

Patent registration number 10-0362529 (Registration date 13 November 2002)

The present invention has been proposed to solve the problems as described above, by providing an adapter that can rotate the tool itself, by rotating the tool at the same time as the rotation of the original plate to uniform coating of the tool to increase the speed of the coating Is to provide a diagonal jig for.

In addition, it is to provide an inclined jig for uniform coating of the tool so that the inclination of the adapter and the spiral angle of the tool to be coated are appropriately set to obtain a uniform coating thickness in the cutting edge portion of the tool.

In addition, it is to provide an oblique jig for uniform coating of the tool by setting the inclination of the adapter and the diameter of the shank of the tool to be coated appropriately to obtain a uniform coating thickness on the cutting edge portion and the blade side of the tool.

Other objects of the present invention will be easily understood through the description of the following embodiments.

The diagonal jig for uniform coating of the tool used in the ion plating apparatus of the present invention for achieving the above technical problem is rotatably coupled by a plurality of rotating shafts that rotate in engagement with a gear of a turntable that rotates the entire jig. And a ring gear fixed to the rotating shaft and rotated by the rotating shaft, and a ring gear extending to the tool mounting hole, and a gear coupled with the ring gear in a gear coupling manner. , It is rotated by the rotation of the ring gear, and includes an adapter having a hole for inserting and fixing a tool.

According to a preferred embodiment of the present invention, the inclination of the gear of the adapter is about 70 to 40 degrees.

According to a preferred embodiment of the present invention, the adapter further comprises a ball bearing provided at the bottom, and the disc includes a hemispherical concave portion on which the ball bearing will be placed to accommodate and support various tilts of the adapter.

According to a preferred embodiment of the present invention, the gear of the adapter comprises an inclination of one of 40, 50, 60 and 70 degrees.

According to a preferred embodiment of the present invention, the inclination of the adapter can be set according to the helical angle of the tool to be coated.

According to a preferred embodiment of the invention, the inclination of the adapter can be set according to the diameter of the shank of the tool to be coated.

According to the diagonal jig for uniform coating of the tool of the present invention configured as described above, it is possible to increase the coating speed by rotating two motions of the original plate and the tool, and additionally, a thick film coating is applied to the cutting edge portion and the blade side portion of the tool. Can be coated with a uniform thickness. Based on this, if the inclination of the adapter is properly set in the diagonal jig according to the use portion of the cutting tool, the life of the cutting tool suitable for the application can be effectively increased.

The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and the present invention serves to further understand the technical idea of the present invention together with the detailed description of the invention described below, and thus the present invention is described in such drawings. It is not limited to interpretation.
1 is a photograph of a jig used in the ion plating apparatus for thick film coating of the present invention.
2 is a view for explaining the original plate and the adapter of the present invention, the left side is a perspective view and the right side is a sectional view.
FIG. 3 is an enlarged cross-sectional view of part A of FIG. 2 and further includes a ball bearing.
4 is a perspective view schematically showing a ring gear and an adapter of the present invention.
5 is a schematic illustration of a gear of an adapter with various inclinations (a).
6 shows various helix angles of the end mill.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are exemplified only for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention It can be implemented in various forms and is not limited to the embodiments described herein.

Embodiments according to the concept of the present invention can be applied to various changes and can have various forms, so the embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosure forms, and includes all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

The terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described herein exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined herein. Does not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a photograph of a jig used in the ion plating apparatus for thick film coating of the present invention. As can be seen from the drawing, at the bottom, the turntable 1 rotating the entire jig rotates, and in connection therewith, the gear 2 rotates to rotate the rotating shaft 6 and the tool 5 coupled with the rotating shaft 6 The disk 3 to be mounted rotates.

2 is a view for explaining the original plate 3 and the adapter 4 of the present invention, the left side is a perspective view and the right side is a sectional view. A plurality of tool mounting holes 7 are installed in the circumferential direction of the disc 3, and the adapter 4 into which the tool is inserted is connected to the tool mounting hole 7 by a gear coupling method. Therefore, as the adapter 4 rotates, the tool 5 will also rotate. Inside the disc 3, a ring gear 12 is provided, which is connected to the rotating shaft 6 and meshes with the gear 41 of the adapter 4. When the rotating shaft 6 rotates, the ring gear 12 coupled thereto rotates, and then the adapter 4 having the gear 41 coupled with the ring gear 12 rotates, and the tool 5 fixed thereto Finally rotates. The adapter also includes a hole 42 for mounting and fixing the tool.

As described above, by using the adapter 4 that rotates the tool in conjunction with the rotation of the original plate 3 to provide a two-motion rotating jig, the coating speed is fast during the ta-C thick film coating process, Deformation of the cutting edge of the tool by exposure to plasma for a long time can be prevented, and the production time of the coating can be shortened and the efficiency of the coating can be increased.

FIG. 3 is an enlarged cross-sectional view of part A of FIG. 2 and further includes a ball bearing 9. A space is provided between the tool mounting hole 7 of the original plate 3 and the shank of the adapter 4 to accommodate various inclinations of the adapter 4. The adapter 4 is supported by a disk 3 and a ball bearing 9. Therefore, the adapter 4 can be seated and supported at various inclinations with respect to the original plate 3, and can rotate smoothly. The inclination angle (a) of the adapter 4 means an angle with respect to the rotation axis 6 and a horizontal axis perpendicular thereto.

4 is a perspective view schematically showing the ring gear 12 and the adapter 4 of the present invention. Referring to FIG. 4, it is described that the tool 5 rotates as the rotation shaft 6 rotates. It can be seen that two or more discs 3 can be installed on the rotating shaft according to the height of the plasma generating source of the ion plating device. In the preferred embodiment, the ring gear 12 and the gear 41 are helical bevel gears.

5 is a schematic illustration of the gear 41 of the adapter 4 with various inclinations (a). The depth of the teeth of the ring gear 12 is formed somewhat deeper, and thus can accommodate various inclinations of the gear 41 of the adapter 4. Since this does not require a large force to rotate the adapter, the adapter can be rotated smoothly even if only a small part is bitten. In the figure, o indicates a slope (a) of 40 degrees, p of 50 degrees, q of 60 degrees, and r of 70 degrees. It should be noted that this is not shown exactly, but schematically.

Next, an example of the end mill, which is one of the tools of the present invention, will be described as an example. 6 shows various helix angles of the end mill. It is not necessary to use a diagonal jig when the helix angle is 0 degrees, but when it is 30 degrees, it is preferable to make the inclination (a) 60 degrees, and when the helix angle is 60 degrees, it is preferable to make the inclination (a) 40 degrees. . Therefore, an adapter of r with a slope (a) of 70 degrees is used, an adapter of q when the slope (a) is 60 degrees, and an adapter of p when the slope (a) is 50, and the slope (a) is 40 In this case, the adapter of o can be used to cope with various spiral angles of the end mill.

Experiment result

In the case of ta-C coating using a conventional vertical jig, that is, a system having an inclination (a) of 90 degrees, for an end mill having a spiral angle of 30 degrees, SEM cross-section analysis was performed to confirm the actual shape and thickness of the ta-C coating on the tool. , As a result, it was confirmed that the upper end of the tool was coated with ta-C of 3.83 μm, the outside of the cutting edge was 4.49 μm, and the bone area inside the cutting edge was 3.98 μm. It was confirmed that the difference in coating thickness for each part was large.

For this, the same end mill as the above-described conditions is used, but in the case of ta-C coating using a diagonal jig of the present invention, for example, using a diagonal jig using an adapter having an inclination (a) of 70 degrees, a ta-C coating As a result of SEM cross-section analysis to confirm the shape and thickness of the ta-C coating on the top, it was confirmed that the thickness of the upper end of the tool was 4.2 µm, 4.12 µm outside the cutting edge, and 4.04 µm ta-C was coated on the bone inside the cutting edge. .

Looking at the coating result according to the two jig systems, in the case of the diagonal jig, it was confirmed that the entire coating thickness of the upper and side surfaces of the cutting edge directly involved in cutting is uniform, and the diagonal jig has a tool tip (top surface) compared to the vertical jig. ) And the side blades were deposited with a uniform coating thickness. It can be seen that the diagonal jig is more uniformly coated due to the nature of the end mill using the blade tip and side. As a result, when using a diagonal jig, the uniform coating of the tool can optimize the function of the tool and extend the life of the tool.

In another embodiment, when the shank diameter of the end mill or drill is large, the area of the upper surface of the cutting edge is also increased, and accordingly, the deviation of the thickness of the upper surface coating is also increased. Therefore, in order to uniformly coat the entire upper surface of the cutting edge, it is preferable to select the inclination of the adapter of the diagonal jig according to the diameter of the shank of the end mill or drill. For example, when the diameter of the shank is 1 to 8 mm, the inclination (a) of the diagonal jig is 70 degrees, when the diameter is 9 to 14 mm, 60 degrees, and when the diameter is 15 to 20 mm, 50 degrees is preferable.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible without departing from the spirit of the present invention. This will be apparent to those skilled in the art to which the present invention pertains. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (6)

delete delete A diagonal jig for uniform coating of tools used in ion plating devices,
A disc that is rotatably coupled by a plurality of rotating shafts that rotate in engagement with a gear of a turntable that rotates the entire jig, and includes a tool mounting hole on which the tool is placed,
A ring gear fixed to the rotating shaft and rotated by the rotating shaft, and extending to the tool mounting hole;
It has a gear coupled to the ring gear and the gear coupling method, is rotated by the rotation of the ring gear, and includes an adapter having a hole for inserting and fixing a tool,
The adapter further includes a ball bearing provided at the bottom, and the disc includes a hemispherical jig including a hemispherical recess on which the ball bearing is placed, to accommodate and support various inclinations of the adapter.
The method according to claim 3,
The gear of the adapter is a diagonal jig comprising one of the inclinations of 40, 50, 60 and 70 degrees.
The method according to claim 3,
The inclination of the adapter can be set according to the spiral angle of the tool to be coated.
The method according to claim 3,
The angle of inclination of the adapter can be set according to the diameter of the shank of the tool to be coated.

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