Machining tool and method for manufacturing a machining tool

• US 10,369,636 B2
• Filed: 04/01/2015
• Issued: 08/06/2019
• Est. Priority Date: 04/17/2014
• Status: Active Grant

• Current Assignee: Kennametal Incorporated
• Original Assignee: Kennametal Incorporated
• Inventors: Ach, Eduard, Gey, Christoph
• Primary Examiner(s): Snyder, Alan
• Application Number:
  US14/676,567
• Publication Number:
  US 20150298221A1
• Time in Patent Office: 1,588 Days
• CPC Class Codes: B23B 2251/02 Connections between shanks and removable cutting heads
• CPC Class Codes: B23B 51/06 Drills with lubricating or cooling equipment B23B51/042 takes precedence
• CPC Class Codes: B23C 2210/03 Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank
• CPC Class Codes: B23C 5/28 Features relating to lubricating or cooling

Abstract

A machining tool, in the area of a tool tip, includes an integrated cooling structure for transporting a coolant. The cooling structure is optionally or in combination designed as a porous structure or at least one cooling channel having a bent reversing segment, so that two channel segments are oriented in opposite directions. The cooling structure is integrated into a base body of a carrier tool. According to a method of the invention, the cooling structure is manufactured by means of a 3D printing method.

Claims

1. A machining tool that extends in an axial direction along a rotational axis and comprising:

a tool tip;

a base body, the base body forming retaining webs between which a tool tip can be inserted and having an integrated cooling structure for conducting a coolant or lubricant, the cooling structure being integrated at least partly in the retaining webs; and

a chip flute formed in the base body, the chip flute having a chip flute wall,

wherein the cooling structure, at least in sections, is designed as a porous structure having a plurality of pores;

wherein at least a portion of the porous structure is located in the retaining webs of the base body and the porous structure exits at an outlet point provided on the chip flute wall; and

wherein the porous structure has a porosity ranging between 5% and 90%.

2. The machining tool as claimed in claim 1, further comprising an outer cladding at which the porous structure exits at the outlet point.

3. The machining tool as claimed in claim 1, wherein the outlet point is a planar outlet point.

4. A method for manufacturing a machining tool as claimed in claim 1, wherein the machining tool is manufactured with an integrated cooling structure at least partially with the aid of a 3D printing method.

5. The machining tool as claimed in claim 1, wherein the pores have an average pore size ranging between 15 and 45 μ

m.

6. The machining tool as claimed in claim 1, wherein the pores of the porous structure are arranged in a honeycomb structure.

7. The machining tool as claimed in claim 1, wherein the pores of the porous structure are arranged in a bionic, random structure.