Method of grinding a parting/grooving insert and a parting/grooving insert

Patent metadata

Field	Value
Publication number	US-11890683-B2
Application number	US-202017030952-A
Country	US
Kind code	B2
Filing date	Sep 24, 2020
Priority date	Nov 24, 2014
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A parting/grooving insert and a method of grinding a parting/grooving insert including rotating a plane grinding surface having a normal vector parallel to the axis of rotation and a tangential direction of rotation; providing a parting/grooving insert including a rake surface, a main clearance surface, and a main cutting edge formed between the rake and main clearance surfaces; orienting/positioning the insert relative to the grinding surface, such that the main clearance surface is parallel to the grinding surface, the normal vector of the main cutting edge being in the plane of the main clearance surface and with a vector component in the direction of rotation forming an angle to the tangential direction of rotation at the insert of at least 20 degrees from parallel orientation; and grinding the main clearance surface to provide grinding marks having an angle to the normal vector of the main cutting edge corresponding to the angle to the tangential direction of rotation.

First claim

What is claimed is:

1. A method of grinding a parting/grooving insert by rotating a grinding wheel including a plane grinding surface, having a normal vector parallel to an axis of rotation and a tangential direction of rotation in the grinding surface plane, comprising:
providing a parting/grooving insert, the insert including a rake surface, a main clearance surface, and a main cutting edge formed between the rake surface and the main clearance surface, wherein the parting/grooving insert includes left and right side clearance surfaces, a left side cutting edge formed between the rake surface and the left side clearance surface, and a right side cutting edge formed between the rake surface and the right side clearance surface;
for each respective clearance surface including the main clearance surface, left side clearance surface, and right side clearance surface, orienting and positioning the parting/grooving insert relative to the plane grinding surface such that the respective clearance surface is parallel to the plane grinding surface, and such that a normal vector of the respective cutting edge, as seen in a plane of the respective clearance surface and in the direction of rotation, forms an angle to the tangential direction of rotation at the position of the parting/grooving insert, the angle being at least 20 degrees and less than 70 degrees from a parallel orientation; and
grinding each of the main clearance surface, left side clearance surface, and right side clearance surface to provide grinding marks having an angle to the normal vector of each respective cutting edge corresponding to the angle to the tangential direction of rotation.

2. The method according to claim 1 , wherein, for each respective clearance surface, the angle to the tangential direction of rotation is at least 30 degrees from a parallel orientation.

3. The method according to claim 1 , wherein, for each respective clearance surface, the angle to the tangential direction of rotation is less than 60 degrees from a parallel orientation.

4. The method according to claim 1 , wherein the parting/grooving insert includes a left hand corner radius surface disposed between the main clearance surface and the left side clearance surface, and a right hand corner radius surface disposed between the main clearance surface and the right side clearance surface, and wherein the parting/grooving insert is gradually moved between a position of grinding the left side clearance surface and the main clearance surface, thus grinding the left hand corner radius surface, and/or wherein the parting/grooving insert is gradually moved between a position of grinding the right side clearance surface and the main clearance surface, thus grinding the right hand corner radius surface.

Assignees

• Sandvik Intellectual Property

Inventors

• JARVSTROM Tobias
• Imrell Henrik

Classifications

• B23B27/045 Primary

  with chip-breaking arrangements · CPC title

• B24B3/08

  of profile milling cutters, e.g. of disc type · CPC title

• B24B3/34 Primary

  of turning or planing tools or tool bits, e.g. gear cutters (B24B3/36 takes precedence) · CPC title

• B23B27/005

  Geometry of the chip-forming or the clearance planes, e.g. tool angles (B23B27/141 and B23B27/22 take precedence) · CPC title

• B23B27/14

  Cutting tools of which the bits or tips {or cutting inserts} are of special material · CPC title