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Rotary cutting tool with sealed land and method of manufacturing the same

A technology of rotating cutting tools and margins, which is applied in the direction of manufacturing tools, drilling accessories, parts of boring machines/drilling machines, etc.

Active Publication Date: 2015-11-25
KENNAMETAL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Rotary cutting tool with sealed land and method of manufacturing the same
  • Rotary cutting tool with sealed land and method of manufacturing the same
  • Rotary cutting tool with sealed land and method of manufacturing the same

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Embodiment Construction

[0048] Directional terms used herein (such as: left, right, front, rear, top, bottom, and their derivatives) refer to the orientation of these components as shown in the drawings and are not limiting for the claims, except in This is explicitly quoted. The same reference numerals are given to the same parts throughout the figures.

[0049] As used herein, the term "number" refers to any non-zero number (ie, one or any number greater than one).

[0050] Figure 2 to Figure 6 Depicted is an exemplary rotary cutting tool 10 having a generally cylindrical shape with a first end 12, an opposite second end 14, in accordance with a non-limiting embodiment of the present invention. and a central longitudinal axis 16 for performing rotary cutting operations on a workpiece (not shown) as the cutting tool 10 rotates about the central longitudinal axis 16 . While the cutting tool 10 is shown in the form of a deep hole drill, it will be appreciated that the concepts described herein may...

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PUM

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Abstract

A rotary cutting tool includes a generally cylindrical body having a first end, a second end and a longitudinal axis therebetween. A mounting portion is disposed about the first end, a head portion having an outer diameter is disposed about the second end, and a body relief portion having an outer diameter less than the head portion is disposed therebetween. The head portion is structured to engage and cut a workpiece. A number of flutes extend from the second end of the cylindrical body along the head portion and along at least a portion of the body relief portion. The head portion includes a number of margin relief surfaces, each disposed between adjacent flutes and inset a distance from the outer diameter of the head portion and extending from the second end of the cylindrical body and terminating at a margin seal within the head portion.

Description

technical field [0001] The present invention relates generally to rotary cutting tools, and more particularly to rotary cutting tools having at least one helical flute and at least two lands on a land. Furthermore, the invention relates to a method for producing such cutting tools. Background technique [0002] Double-margin drills are known such as figure 1 The deep hole twist drill bit 50 shown in. Such a drill bit has a generally cylindrical shape and includes a mounting portion 52 located at or near the first end 51 of the drill bit 50 for mounting the drill bit 50 in a chuck mechanism (not shown) of a machine tool. , an opposite head portion 54 positioned at or near the opposite second end 53 of the drill bit 50 for engaging and cutting a workpiece (not shown), and is stepped between the mounting portion 52 and the head portion 54 A body retraction portion 56 between them. The body relief portion 56 has a diameter smaller than that of the head portion 54 in order to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/02B23B51/06B23B51/00
CPCB23B51/02B23B2251/443Y10T408/9095Y10T408/9097B23B51/06
Inventor J·施韦格尔S·乔治H·R·考佩尔
Owner KENNAMETAL INC