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End mill for cutting of high-hardness materials

一种立铣刀、刀具轴的技术，应用在高硬度材料切削用立铣刀领域，能够解决无法实现寿命与稳定性、缺损、磨损快等问题，达到刚性提高、提高切削效率、排出性良好的效果

Active Publication Date: 2013-09-25
MOLDINO TOOL ENG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the high-efficiency roughing of such high-hardness mold materials, there are still problems in the case of using conventional radius end mills, which are prone to chipping and wear quickly.
In addition, especially when machining the corners of molds, vibrations are likely to occur during cutting, so sufficient life and stability have not yet been achieved.

Method used

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  • End mill for cutting of high-hardness materials
  • End mill for cutting of high-hardness materials
  • End mill for cutting of high-hardness materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0124] In order to confirm the superiority of the end mill of the present invention, a cutting test of pocket-shaped cutting was performed. In the cutting test, examples of the present invention and conventional examples were used. The specifications of each tool are as follows.

[0125] In Example 1, Example 1 of the present invention, and Conventional Examples 2 and 3 were used. As the various elements of the common end mill shape, an end mill with a tool diameter D of 10 mm, a core thickness of 7.5 mm, a twist angle of the peripheral cutting edge of 20 degrees, the number of cutting edges of 6 pieces, and a coating of The base material of TiSiN type and end mill is cemented carbide.

[0126] In Example 1 of the present invention, Examples 2 and 3 of the prior art, the radius of curvature of the edge of the clearance surface of the circular-arc cutting edge on the rear side of rotation was 13 mm, and the radius of curvature of the circular-arc cutting edge was varied.

[...

Embodiment 2）

[0137] In Example 2, in order to confirm the relationship between the radius of curvature of the circular-arc cutting edge and the radius of curvature of the edge of the circular-arc cutting edge on the rear side of the clearance surface after rotation in the example of the present invention, the pocket shape was carried out in the same manner as in Example 1. Cutting test for machining.

[0138] Embodiment 2 uses Examples 4-10 of the present invention. As in Example 1 of the present invention used in Example 1, an end mill having a tool diameter D of 10 mm, a core thickness of 7.5 mm, and a twist of the peripheral cutting edge was prepared as various elements of the common end mill shape. The angle is 20 degrees, the number of flutes is 6 pieces, the radius of curvature of the edge on the rear side of the rotation of the clearance surface of the arc cutting edge is 2.6 times the tool radius, that is, 13mm, the coating is TiSiN, and the base material of the end mill is super ...

Embodiment 3）

[0151] In Example 3, in order to confirm the relationship between the radius of curvature of the circular-arc blade and the tool radius in the example of the present invention, a cutting test of pocket-shaped cutting was performed in the same manner as in Example 1.

[0152] In Example 3, Examples 11 to 17 of the present invention were used. As in Example 1 of the present invention used in Example 1, an end mill having a tool diameter D of 10 mm, a core thickness of 7.5 mm, and a twist of the peripheral cutting edge was prepared as various elements of the common end mill shape. The angle is 20 degrees, the number of flutes is 6 pieces, the radius of curvature of the edge on the rear side of the rotation of the clearance surface of the arc cutting edge is 2.6 times the tool radius, that is, 13mm, the coating is TiSiN, and the base material of the end mill is super Hard alloy, and the bottom edge is connected with the peripheral edge.

[0153] As Example 11 of the present inven...

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Abstract

The present invention relates to an end mill having a circular cutting edge of curved shape when viewed in a direction perpendicular to the tool axis, an end cutting edge composed of a medium-to-low pitch cutting edge of linear shape or circular shape, and a peripheral cutting edge. When viewed in a direction parallel to the tool axis, the edges of the circular cutting edge and the flank face of the circular cutting edge at the rearward sides thereof with respect to rotation are curved shapes having curvature radii, and the curvature radius of the circular cutting edge is smaller than the curvature radius of the flank face of the circular cutting edge at the rearward side thereof with respect to rotation.

Description

technical field [0001] The invention relates to an end mill for cutting high-hardness materials. Background technique [0002] In recent years, there has been an increasing demand for shortening the lead time for making molds, and therefore efficient processing for making molds has been desired. For efficient rough machining of molds, ball end mills and radius end mills are widely used. However, since the ball end mill performs much cutting near the center, the cutting speed cannot be increased, and the machinability deteriorates. In addition, there is also the disadvantage that the chip pocket near the center is small, and chips are not easily discharged. Therefore, radius end mills have been used more and more recently in high-efficiency rough machining of molds. Radius end mills cut a lot on the outer peripheral side, so the chip flute is wide, and chips are discharged at a position where the cutting speed is good and the cutting speed is high. Compared with the ball n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/10
CPCB23C5/10B23C2210/082B23C2210/084B23C2210/205B23C2210/54Y10T407/1948Y10T407/1964B23C5/16B23C5/1009B23C2210/0435
Inventor 韩刚前田胜俊
Owner MOLDINO TOOL ENG LTD
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