Metal cutting tool holder comprising fluid passages

Patent metadata

Field	Value
Publication number	US-10710165-B2
Application number	US-201616068923-A
Country	US
Kind code	B2
Filing date	Dec 19, 2016
Priority date	Jan 18, 2016
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

A metal cutting tool holder includes a tool holder body having a first fluid passage extending in a first direction between a first inlet and a first outlet, and a second fluid passage extending in a different second direction between a second inlet and a second outlet. The tool holder body has a cavity and the first outlet and the second inlet intersect the cavity. A member is positionable in the cavity such that a curved third fluid passage connecting the first outlet and the second inlet is formed at least partially by the member. The curved third fluid passage extends from a first end adjacent to the first outlet to a second end adjacent to the second inlet. The first direction is tangent to the curved third fluid passage at the first end, and the second direction is tangent to the curved third fluid passage at the second end.

First claim

The invention claimed is:

1. A metal cutting tool holder comprising:
a tool holder body, the tool holder body including a first fluid passage extending in a first direction between a first inlet and a first outlet and a second fluid passage extending in a second direction between a second inlet and a second outlet, wherein the first direction is different from the second direction, the tool holder body including a cavity, wherein the first outlet and the second inlet intersect the cavity, the first outlet and the second inlet being spaced apart; and
a member positioned in the cavity such that a curved third fluid passage connecting the first outlet and the second inlet is formed at least partially by the member, wherein the curved third fluid passage extends from a first end adjacent to the first outlet to a second end adjacent to the second inlet, the first direction being tangent to, or substantially tangent to, the curved third fluid passage at the first end, and the second direction being tangent to, or substantially tangent to, the curved third fluid passage at the second end, wherein the curved third fluid passage connecting the first outlet and the second inlet is formed by the member and the tool holder body.

2. The metal cutting tool holder according to claim 1 , further comprising an insert seat arranged to receive a cutting insert, and wherein the second outlet is located between, or substantially between, the insert seat and the member.

3. The metal cutting tool holder according to claim 1 , wherein the member has a cylindrical or substantially cylindrical shape, wherein the member includes a circular or substantially circular top surface, an opposite circular or substantially circular bottom surface, and a side surface connecting the top surface the bottom surface, and wherein a center axis of the member extends between the top surface and the bottom surface.

4. The metal cutting tool holder according to claim 3 , wherein the member includes a through hole extending between the top surface and the bottom surface, wherein a center axis of the through hole is different from the center axis of the member, wherein the cutting tool holder includes a screw and a threaded hole opening in the cavity, wherein the member is attachable in the cavity by the screw, and wherein the screw is partly positioned inside the through hole.

5. The metal cutting tool holder according to claim 4 , wherein the through hole is parallel to, or substantially parallel to, and a spaced apart from the center axis of the member, wherein the cavity opens in an exterior surface of the tool holder body, wherein the cavity includes a bottom surface and a side surface, and wherein the threaded hole opens into the bottom surface of the cavity.

6. The metal cutting tool holder according to claim 1 , wherein a groove is formed in the side surface of the member.

7. The metal cutting tool holder according to claim 6 , wherein the member includes a center axis and a through hole extending between the top surface and the bottom surface, and wherein the groove and the through hole are located on opposite or substantially opposite sides of the center axis of the member.

8. The metal cutting tool holder according to claim 6 , wherein when the member is mounted in the cavity, a first end of the groove corresponds to the first end of the curved third fluid passage and a second end of the groove corresponds to the second end of the curved third fluid passage.

9. The metal cutting tool holder according to claim 8 , wherein the first end of the groove corresponding to the first end of the curved third fluid passage has a concave bottom surface having a first radius, wherein the second end of the groove corresponding to the second end of the curved third fluid passage has a concave bottom surface having a second radius, wherein the first radius is larger than the second radius.

10. The metal cutting tool holder according to claim 1 , wherein a diameter of the first fluid passage is larger than a diameter of the second fluid passage.

11. The metal cutting tool holder according to claim 1 , wherein the first end of the curved third fluid passage has a larger cross-sectional area than the second end of the curved third fluid passage.

12. The metal cutting tool holder according to claim 1 , wherein the first direction and the second direction are located in a common plane.

13. The metal cutting tool holder according to claim 1 , wherein the tool holder body includes a coupling having a flange surface and a tapered surface symmetrically or substantially symmetrically arranged around a longitudinal center axis of the tool holder body, wherein the flange surface is perpendicular to the longitudinal center axis of the tool holder body, and wherein the first inlet intersects the flange surface.

14. The metal cutting tool holder according to claim 1 , wherein the cavity includes a bottom surface and a side surface, and wherein each of the first outlet and the second inlet intersect the side surface of the cavity.

15. A method to machine a metal work piece by a turning operation comprising the steps of:
supplying a metal cutting tool holder according to claim 2 ;
fastening a turning insert in the insert seat;
supplying a metal work piece;
rotating the metal work piece;
supplying a fluid from the first inlet to the second outlet; and
moving the metal cutting tool holder relative to the metal work piece such that a cutting edge of the turning insert cuts chips from the metal work piece.

Assignees

• Sandvik Intellectual Property

Inventors

• Poy Gerd

Classifications

• B23B2250/12

  Cooling and lubrication · 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

• Y10T407/14

  with means to apply fluid to cutting tool · CPC title

• B23Q11/10

  Arrangements for cooling or lubricating tools or work · CPC title

• B23B29/12

  Special arrangements on tool holders · CPC title