Tool holder and base mounting assembly

Patent metadata

Field	Value
Publication number	US-2016237818-A1
Application number	US-201514620841-A
Country	US
Kind code	A1
Filing date	Feb 12, 2015
Priority date	Feb 12, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine and adapted for receiving a cutting tool includes: a base having a bottom portion for attachment to the surface of the rotatable driving member and a front portion that defines a bore; and a tool holder configured for mounting to the base. The tool holder includes: a leading head region having a forward face that defines an aperture for receiving the cutting tool; a trailing shank region with a central longitudinal axis and having an axial forward end and an axial rearward end; and a mediate region intermediate of and contiguous with the leading head region and the trailing shank region. The trailing shank region includes an anti-rotation portion and a mounting retention portion.

First claim

What is claimed is:

1 . A mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine and adapted for receiving a cutting tool, the mounting assembly comprising:
a base having a bottom portion for attachment to the surface of the rotatable driving member and a front portion that defines a bore; and a tool holder configured for mounting to the base, the tool holder comprising:
a leading head region having a forward face that defines an aperture for receiving the cutting tool;
a trailing shank region with a central longitudinal axis and having an axial forward end and an axial rearward end; and
a mediate region intermediate of and contiguous with the leading head region and the trailing shank region;
wherein the trailing shank region comprises an anti-rotation portion and a mounting retention portion.

2 . The mounting assembly of claim 1 , wherein the anti-rotation portion and the mounting retention portion are configured as a single member disposed about the central longitudinal axis of the trailing shank region.

3 . The mounting assembly of claim 1 , wherein the anti-rotation portion has a generally non-circular cross-section.

4 . The mounting assembly of claim 1 , wherein the anti-rotation portion has at least one flat side.

5 . The mounting assembly of claim 1 , wherein the anti-rotation portion is adjacent the axial rearward end of the trailing shank region.

6 . The mounting assembly of claim 1 , wherein at least a portion of the anti-rotation portion tapers inwardly toward the axial rearward end of the trailing shank region.

7 . The mounting assembly of claim 1 , wherein a portion of the bore of the base is configured to receive the anti-rotation portion of the trailing shank region.

8 . The mounting assembly of claim 1 , wherein the mounting retention portion includes a tapered press fit portion that tapers axially rearward toward the anti-rotation portion.

9 . The mounting assembly of claim 8 , wherein the mounting retention portion further includes a generally cylindrical press fit portion axially rearward of the tapered press fit portion and adjacent the anti-rotation portion.

10 . The mounting assembly of claim 1 , wherein the bore of the base is configured for receiving at least a portion of the trailing shank region of the tool holder and an axial rearward end of the bore is configured to have a shape complimentary to the anti-rotation portion of the trailing shank region.

11 . A tool holder of a mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine, the tool holder adapted for receiving a cutting tool, the tool holder comprising:
a leading head region having a forward face that defines an aperture for receiving the cutting tool; a trailing shank region with a central longitudinal axis and having an axial forward end and an axial rearward end; and a mediate region intermediate of and contiguous with the leading head region and the trailing shank region; wherein the trailing shank region comprises an anti-rotation portion and a mounting retention portion.

12 . The tool holder of claim 11 , wherein the anti-rotation portion and the mounting retention portion are configured as a single member disposed about the central longitudinal axis of the trailing shank region.

13 . The tool holder of claim 11 , wherein the anti-rotation portion has a generally non-circular cross-section.

14 . The tool holder of claim 11 , wherein the anti-rotation portion has at least one flat side.

15 . The tool holder of claim 11 , wherein the anti-rotation portion is adjacent the axial rearward end of the trailing shank region.

16 . The tool holder of claim 11 , wherein at least a portion of the anti-rotation portion tapers inwardly toward the axial rearward end of the trailing shank region.

17 . The tool holder of claim 11 , wherein the mounting retention portion includes a tapered press fit portion that tapers axially rearward toward the anti-rotation portion.

18 . The tool holder of claim 11 , wherein the mounting retention portion further includes a generally cylindrical press fit portion axially rearward of the tapered press fit portion and adjacent the anti-rotation portion.

19 . A tool holder of a mounting assembly adapted for attachment to a surface of a rotatable driving member of a cutting tool machine, the tool holder adapted for receiving a cutting tool, the tool holder comprising:
a head having a forward face that defines an aperture for receiving the cutting tool; and a shank with a central longitudinal axis and having an axial forward end and an axial rearward end, the shank comprising:
an anti-rotation portion; and
a mounting retention portion,
wherein the anti-rotation portion and the mounting retention portion are configured as a single member disposed about the central longitudinal axis of the trailing shank region,
wherein the mounting retention portion includes a tapered press fit portion that tapers axially rearward and a generally cylindrical press fit portion.

20 . The tool holder of claim 19 , wherein the anti-rotation portion has a generally non-circular cross-section.

Assignees

• Kennametal Inc

Inventors

• Weber Luke A
• Helsel Eric P
• Lavely Brian K
• Lamantia Timothy A
• Keller Donald E

Classifications

• E21C35/191

  for fixing holders · CPC title

• E21C35/19 Primary

  Means for fixing picks or holders · CPC title

• E21C35/18 Primary

  Mining picks; Holders therefor (planing knives E21C27/44) · CPC title