Tool holder assemblies and methods of using the same

Patent metadata

Field	Value
Publication number	US-10201857-B2
Application number	US-201514820827-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Aug 7, 2015
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

In one aspect tool holder assemblies are described herein. Such tool holder assemblies can employ outer and inner spring-like members. For example, a tool holder assembly described herein comprises a drawbar having an outer diameter surface and an inner diameter surface defining an interior of the drawbar. The drawbar is movable or actuatable along a longitudinal axis between a locked position and an unlocked position. The tool holder assembly can further comprise a first spring-like member positioned around the outer diameter surface of the drawbar and a second spring-like member positioned in the drawbar interior.

First claim

The invention claimed is:

1. A tool holder assembly comprising:
a drawbar having an outer diameter surface and an inner diameter surface defining an interior of the drawbar, the drawbar being actuatable along a longitudinal axis between a locked position and an unlocked position, and the outer diameter surface having a plurality of slots disposed therein;
a first spring-like member positioned around the outer diameter surface of the drawbar and a second spring-like member positioned in the drawbar interior;
an end plate, wherein actuating the drawbar towards the unlocked position compresses the first and second spring-like members against the end plate; and
a canister plate having a plurality of projections for engaging the slots in the outer diameter surface.

2. The tool holder assembly of claim 1 , wherein actuating the drawbar towards the unlocked position compresses the second spring-like member against the projections on the interior of the drawbar.

3. The tool holder assembly of claim 1 , wherein actuating the drawbar towards the unlocked position compresses the first spring-like member against the canister plate around the diameter surface.

4. The tool holder assembly of claim 1 , wherein the drawbar further comprises a rod positioned in the drawbar interior.

5. The tool holder assembly of claim 4 , wherein the second spring-like member is disposed around the rod.

6. The tool holder of claim 1 , wherein the drawbar is hydraulically actuatable.

Assignees

• Kennametal Inc

Inventors

• Cariss Lance

Classifications

• Y10T409/309464

  and draw bar · CPC title

• B23B2270/025

  Hydraulics · CPC title

• B23B29/046

  with an intermediary toolholder · CPC title

• B23B2260/034

  Drawbars · CPC title

• B23B31/263

  by means of balls · CPC title