Cutting tool and cutting insert with fluid flow structures

Patent metadata

Field	Value
Publication number	US-11097351-B2
Application number	US-201213615921-A
Country	US
Kind code	B2
Filing date	Sep 14, 2012
Priority date	Feb 20, 2009
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A cutting tool includes a cutting insert comprising a top surface, a bottom surface, a clamping surface for abutting a clamp, a cutting edge, a hole extending through the insert from the bottom surface to the clamping surface, and a channel extending from the clamping surface to proximate the cutting edge, and a tool holder comprising a tool holder body having a pocket for receiving the insert, a clamp for contacting the clamping surface and clamping the insert in the pocket, and a tool holder passage in the body in flow communication with the hole in the insert. A cutting insert is also provided.

First claim

What is claimed is:

1. A cutting tool comprising:
a tool holder including a coolant bore;
a cutting insert including a cutting edge and a fastening bore, wherein the fastening bore comprises a first mating surface; and
a fastener adapted to secure the cutting insert to the tool holder, the fastener comprising a head portion;
wherein when the cutting insert is secured to the tool holder by securing the fastener through the fastening bore, the fastening bore and the fastener define a cavity fluidly communicating with the coolant bore and adapted to direct a coolant through the cutting insert and toward the head portion;
wherein the head portion comprises;
a tapered second mating surface structured to securely abut a portion of the first mating surface of the fastening bore when the fastener is secured through the fastening bore; and
a recess extending radially inward from the tapered second mating surface, wherein the recess is adapted to direct a coolant fluid to the cutting edge of the cutting insert.

2. The cutting tool of claim 1 , where the head portion further comprises a lip portion adapted to direct coolant from the cavity toward the cutting edge when the cutting insert is secured to the tool holder by securing the fastener through the fastening bore.

3. The cutting tool of claim 1 , wherein the cutting tool is one of a milling tool, a boring tool, a turning tool, a drilling tool, and a general machining tool.

4. The cutting tool of claim 1 , wherein the fastening bore of the cutting insert comprises a recess, and the fastening bore and the fastener define a cavity fluidly communicating with the coolant bore and adapted to direct a coolant through the cutting insert and toward the head portion when the cutting insert is secured to the tool holder by the fastener.

5. The cutting tool of claim 1 , wherein the head portion includes the recess and a lip portion adapted to work together to direct a coolant fluid toward a cutting edge of the cutting insert secured to the tool holder by the fastener.

Assignees

• Hoefermann Volker
• Seco Tools Ab

Inventors

• Höfermann Volker

Classifications

• B23B2260/03

  Clamps · CPC title

• B23B2200/086

  with one or more grooves · CPC title

• B23B27/1614

  with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert (B23B27/1644 takes precedence) · CPC title

• B23B27/10 Primary

  Cutting tools with special provision for cooling {(drills with lubricating or cooling equipment B23B51/06; features relating to lubricating or cooling of milling cutters B23C5/28; arrangements or devices for cooling or lubricating tools or work B23Q11/10)} · CPC title

• B23C5/281

  Coolant moving along the outside tool periphery towards the cutting edges · CPC title