Cutting tool part assembly

Patent metadata

Field	Value
Publication number	US-2020254530-A1
Application number	US-201816647010-A
Country	US
Kind code	A1
Filing date	Sep 4, 2018
Priority date	Sep 15, 2017
Publication date	Aug 13, 2020
Grant date	—

Abstract

A cutting head attachment assembly for a cutting tool includes a body forming an axially forward part of the cutting tool attachable to a cutting head via a clamping element and a fixation element. A guide surface provided at the body or cutting head extends in both a radial and an axial direction to support movement of the clamping element in both the radial and axial directions via actuation of the fixation element to force and clamp together axially the head and body.

First claim

1 . A cutting tool part assembly for a cutting tool, the assembly comprising:
a first body arranged to form an axially forward part of a cutting tool; a clamping element movably mounted relative to the first body to a clamping position to releasably clamp a second body at the first body; and a fixation element arranged to releasably lock the clamping element in the clamping position, wherein the first body includes an axially forward facing contact face arranged to mate with a corresponding axially rearward facing contact face of the second body, and at least one abutment face being at least partially rearward facing, the clamping element including at least one first clamp face being at least partially forward facing to mate with the abutment face and at least one second clamp face being at least partially axially rearward facing to mate with a portion of the second body, the first body including at least one guide surface extending in a radial direction and aligned oblique to a plane perpendicular to a longitudinal axis of the first body so as to also extend in an axial direction of the first body, the guide surface supporting movement of the clamping element in a radial and an axial direction via an actuation of the fixation element to force and clamp together axially the first body and the second body.

2 . The assembly as claimed in claim 1 , wherein the guide surface is located at the first body.

3 . The assembly as claimed in claim 1 , wherein the first body includes a channel having a length extending radially and a depth recessed axially from the contact face, the guide surface defining at least a part of the channel, wherein the clamping element is arranged to be at least partially accommodated and radially slidable within the channel.

4 . The assembly as claimed in claim 3 , wherein the guide surface forms a base surface of the channel, the channel being further defined by opposed side faces.

5 . The assembly as claimed in claim 4 , wherein the at least one abutment face includes at least portions of the opposed side faces.

6 . The assembly as claimed in claim 1 , wherein at least portions of respective contact faces extend in a plane generally perpendicular to the longitudinal axis of the first body and the abutment face and the first and second clamp faces are aligned oblique to the contact faces.

7 . The assembly as claimed in claim 1 , wherein in an axial plane extending through the first body and bisecting the longitudinal axis, the guide surface extends in a radial direction at an angle (a) relative to the plane perpendicular to the longitudinal axis of the first body in the range 0.5° to 10°; 1° to 9°; 1° to 8°; 1° to 7°; 3° to 7°; or 4° to 6°.

8 . The assembly as claimed in claim 1 , wherein in an axial plane extending through the first body and bisecting the longitudinal axis, each of the abutment face and the first clamp face are aligned at an angle in a range 10° to 50°; 15° to 45°; 20° to 40°; 25° to 35°; or 27° to 33° relative to said axial plane.

9 . The assembly as claimed in claim 8 , wherein in an axial plane extending through the first body and bisecting the longitudinal axis, an angle defined between the first and second clamp faces is in a range 100° to 140°; 105° to 135°; 110° to 130°; or 115° to 125°.

10 . The assembly as claimed in claim 1 , wherein the fixation element comprises a pin or screw adjustably mountable at the first body or the second body.

11 . The assembly as claimed in claim 10 , wherein the fixation element is coupled to the clamping element such that a positional adjustment of the fixation element relative to the first body and/or the second body provides the radial and axial movement of the clamping element along the guide surface.

12 . The assembly as claimed in claim 10 , wherein the fixation element is elongate having a length extending parallel, generally parallel or nearly parallel with a length of the clamping element that extends generally radially at the first body and/or the second body.

13 . The assembly as claimed in claim 10 , wherein the fixation element is elongate having a length extending perpendicular, generally perpendicular, nearly perpendicular or transverse to a length of the clamping element that extends generally radially at the first body and/or the second body.

14 . The assembly as claimed in claim 10 , wherein a length of the fixation element is aligned parallel, generally parallel or nearly parallel with the guide surface extending in the radial direction.

15 . The assembly as claimed in claim 1 , wherein the clamping element includes a bore arranged to at least partially accommodate a first portion of the fixation element.

16 . The assembly as claimed in claim 15 , wherein the first body includes a radially extending bore arranged to at least partially accommodate a second portion of the fixation element.

17 . The assembly as claimed in claim 16 , wherein the fixation element includes first threads arranged at or towards a first axial end to mate and cooperate with first threads formed at the bore of the clamping element, and second threads formed at or towards a second axial end to mate and cooperate with second threads formed at the bore of the first body.

18 . The assembly as claimed in claim 1 , wherein at least a portion of the contact face of the first body is profiled and optionally comprises surface scoring, ridges, ribs or roughening.

19 . The assembly as claimed in claim 1 , wherein the second body is positioned axially forward of the first body and includes at least one abutment face being arranged at least partially axially forward facing to mate with the second clamp face being at least partially axially rearward facing.

20 . The assembly as claimed in claim 19 , wherein the second body includes a cutting head.

21 . The assembly as claimed in claim 19 , wherein the second body includes an adaptor, for positioning axially between a cutting head and the first body.

22 . The assembly as claimed in claim 19 , wherein the second body includes a cutting head and the first body includes an adaptor, the adaptor being mountable to an axially forward region of the cutting tool.

23 . The assembly as claimed in claim 19 , wherein at least a portion of the contact face of the second body is profiled and includes surface scoring, ridges, ribs or roughening.

Assignees

• Sandvik Intellectual Property

Inventors

• Flottorp Kaja Marie
• Hovtun Reidar

Classifications

• B23B2270/58

  Oblique elements · CPC title

• B23B2240/36

  Connections using a tongue and a hollow of corresponding prismatic form · CPC title

• B23B2270/08

  Clamping mechanisms; Provisions for clamping (B23B2210/00 takes precedence) · CPC title

• B23B2210/08

  Tools comprising intermediary toolholders · CPC title

• B23B2231/0204

  Connection of shanks to working elements of tools · CPC title