Cutting tool having insert pocket with cantilevered member

Patent metadata

Field	Value
Publication number	US-9475138-B2
Application number	US-201414160932-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Jan 22, 2014
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A cutting tool (has a central, longitudinal axis and a tool body including an insert pocket with a bottom wall, a rear wall and at least one side wall. A cantilevered member is machined from the tool body so as to be integrally formed with the tool body. The cantilevered member extends from one of the walls of the insert pocket. An adjustment screw exerts a force against the cantilevered member to selectively adjust a position of a cutting insert mounted on the cantilevered member with respect to the central, longitudinal axis of the cutting tool. A method for selectively adjusting a position of the cutting insert is also disclosed.

First claim

What is claimed is:

1. A cutting tool having a central, longitudinal axis, comprising:
a tool body including an insert pocket with a bottom wall, a rear wall and at least one side wall;
a cantilevered member extending from one of the walls of the insert pocket; and
an adjustment screw for exerting a force against the cantilevered member to selectively adjust a position of a cutting insert mounted on the cantilevered member,
wherein the cantilevered member includes a top support wall, a bottom support wall opposite the top support wall, and a rear support wall, and
wherein said adjustment screw is threaded into a threaded bore extending into the rear wall of the pocket and defining a positive axial angle with respect to an x-axis of the cutting tool and a positive radial angle with respect to a y-axis of the cutting tool.

2. The cutting tool according to claim 1 , wherein the adjustment screw exerts a force against the bottom support wall of the cantilevered member to selectively adjust the position of a cutting insert.

3. The cutting tool according to claim 1 , further comprising a first clearance gap between the cantilevered member and the bottom wall of the pocket, and a second clearance gap between the cantilevered member and the at least one side wall of the pocket, and a third clearance gap between the cantilevered member and the rear wall of the pocket.

4. The cutting tool according to claim 1 , wherein the position of the cutting insert can be selectively adjusted in the direction of the central, longitudinal axis of the cutting tool by a distance, D, of at least about 0.002 inches (about 0.051 mm).

5. The cutting tool according to claim 1 , wherein the cutting insert is entirely supported by the cantilevered member.

6. A combination cutting tool and cutting insert, comprising:
a cutting tool having a central, longitudinal axis comprising:
a tool body including an insert pocket with a bottom wall, a rear wall and at least one side wall;
a cantilevered member extending from one of the walls of the insert pocket, the cantilevered member including a top support wall, a bottom support wall opposite the top support wall, and a rear support wall;
an adjustment screw for exerting a force against the cantilevered member; and
a cutting insert mounted on the cantilevered member, comprising:
a top surface, a bottom surface, and a plurality of side surfaces, each side surface including a first pair of chip grooves and a second pair of chip grooves extending perpendicular to the first pair of chip grooves;
a plurality of primary wiper cutting edges formed at an intersection between each of the first pair of chip grooves and the top and bottom surfaces,
wherein the adjustment screw exerts a force against the cantilevered member to selectively adjust a position of the primary wiper cutting edges of the cutting insert with respect to the central, longitudinal axis of the cutting tool, and
wherein said adjustment screw is threaded into a threaded bore extending into the rear wall of the pocket and defining a positive axial angle with respect to an x-axis of the cutting tool and a positive radial angle with respect to a y-axis of the cutting tool.

7. The combination according to claim 6 , wherein the cantilevered member extends from the at least one side wall of the insert pocket.

8. The combination according to claim 5 , wherein the cutting insert is isometrically mounted on the cutting tool.

9. The combination according to claim 5 , wherein the cutting insert is tangentially mounted on the cutting tool.

10. The combination according to claim 6 , wherein the adjustment screw exerts a force against the bottom support wall of the cantilevered member to selectively adjust a position of a cutting insert.

11. The combination according to claim 6 , wherein the cutting insert is entirely supported by the cantilevered member.

Assignees

• Kennametal Inc

Inventors

• Morrison Lewis Ray
• Iyer Ravishankar
• Rusnock Scott Patrick

Classifications

• B23C5/2226

  for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body · CPC title

• 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

• B23C5/2493

  where the adjustment is made by deforming the seating surfaces · CPC title

• B23C5/2489

  where the adjustment is made by changing the inclination of the inserts · CPC title