Method for manufacturing an insert-receiving pocket wall with a compound radius

Patent metadata

Field	Value
Publication number	US-9649700-B2
Application number	US-201313845403-A
Country	US
Kind code	B2
Filing date	Mar 18, 2013
Priority date	Mar 18, 2013
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A method for manufacturing a sidewall support surface of an insert-receiving pocket with a compound radius includes the steps of: 1) tilting a cutting tool at a primary tilt angle with respect to a first plane (x-z); 2) tilting the cutting tool at a secondary tilt angle with respect to a second plane (y-z), the second plane different than the first plane; and 3) rotating the cutting tool about an axis (z-axis) perpendicular to a pocket floor of the insert-receiving pocket while maintaining the first and second tilt angles. A cutting tool including a toolholder with the insert-receiving pocket having a pocket floor and the sidewall support surface formed with a compound radius is also described.

First claim

What is claimed is:

1. A method for manufacturing a sidewall support surface of an insert-receiving pocket with a compound radius, comprising:
tilting a cutting tool at a selectable primary tilt angle with respect to a first plane (x-z);
tilting the cutting tool at a selectable secondary tilt angle with respect to a second plane (y-z), the second plane being different than the first plane and perpendicular with respect to the first plane; and
rotating the cutting tool about an axis (z-axis) that is perpendicular to a pocket floor of the insert-receiving pocket and lies in parallel with respect to the first and second planes, while maintaining the first and second tilt angles, thereby removing material from a sidewall support surface of an insert-receiving pocket of a toolholder,
whereby the sidewall support surface of the insert-receiving pocket of the toolholder is formed to be convex, with a cross-sectional shape defined by a compound radius and corresponding to a portion of a ring torus.

2. The method according to claim 1 , wherein the primary tilt angle is between zero (0) degrees and twenty-five (25) degrees.

3. The method according to claim 1 , wherein the secondary tilt angle is between zero (0) degrees and thirty-five (35) degrees.

4. The method according to claim 1 , wherein the primary tilt angle is less than or equal to the secondary tilt angle.

5. A sidewall support surface of an insert-receiving pocket of a toolholder formed with the method of claim 1 .

6. The method according to claim 1 , wherein the cutting tool is an end mill.

7. The method according to claim 1 , wherein the primary tilt angle is selected to be substantially equal to a clearance angle of a cutting insert to be mounted at the insert-receiving pocket.

8. The method according to claim 1 , wherein the compound radius is defined by a minor radius and a major radius.

9. The method according to claim 8 , wherein the secondary tilt angle is selected to influence the minor radius and the major radius.

10. The method according to claim 9 , wherein, for a given primary tilt angle, a decrease in the secondary tilt angle corresponds to an increase in the minor radius and the major radius.

11. The method according to claim 10 , wherein the cutting tool is an end mill.

12. The method according to claim 8 , wherein the minor radius defines a radius of curvature of the sidewall support surface.

Assignees

• Kennametal Inc

Inventors

• Gamble Kevin Michael
• Morrison Lewis Ray

Classifications

• B23C5/22

  Securing arrangements for bits or teeth {or cutting inserts} · CPC title

• B23C5/2208

  for plate-like cutting inserts  (B23C5/2226, B23C5/2234 take precedence) · CPC title

• B23C2210/168

  Seats for cutting inserts, supports for replacable cutting bits · CPC title

• B23C2200/045

  Round · CPC title

• B23B2205/12

  Seats for cutting inserts · CPC title