Metal cutting tool with coolant supply

Patent metadata

Field	Value
Publication number	US-11084102-B2
Application number	US-201615755638-A
Country	US
Kind code	B2
Filing date	Jun 29, 2016
Priority date	Aug 31, 2015
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A metal cutting tool includes a main tool body and a slider element received at least partially in the main tool body and arranged movably relative. The slider element has a cutting edge or supports a cutting insert having a cutting edge. An internal coolant supply is arranged to supply coolant from the main tool body to the cutting edge and has a coolant channel running within the main tool body and within the slider element. The main tool body, or a transfer element that has the coolant channel being part of the internal coolant supply and connected with the main tool body, includes a first sealing surface on which an outlet of the coolant channel of the main tool body is arranged. The slider element, or the transfer element, includes a second sealing surface on which an inlet of the coolant channel of the slider element is arranged.

First claim

The invention claimed is:

1. A metal cutting tool comprising:
a main tool body;
a slider element received at least partially in an opening in the main tool body and movably arranged relative thereto in an adjustment direction between a first and a second position, the slider element including a cutting edge or being arranged to support a cutting insert having a cutting edge, and an internal coolant supply arranged to supply coolant from the main tool body to the cutting edge and having a coolant channel running within the main tool body as well as within the slider element, wherein the main tool body, or a transfer element that has a coolant channel that is part of the internal coolant supply and that is connected with the main tool body, includes a first sealing surface on which an outlet of the coolant channel of the main tool body is arranged, the slider element or the transfer element includes a second sealing surface on which an inlet of the coolant channel of the slider element is arranged, wherein the coolant channel of the transfer element includes an inlet and outlet, the outlet of the transfer element having a different shape and/or size than the inlet of the transfer element;
a clamping element with which the first and the second sealing surfaces are pressable against each other, whereby a sealed connection between the outlet of the coolant channel of the main tool body and the inlet of the coolant channel of the slider element is provided; and
a fixation element movable between a releasing position and a fixing position, wherein in the fixing position the fixation element is in contact with the slider element and provides a non-positive connection between the fixation element and the slider element and wherein in the releasing position no non-positive connection between the fixation element and the slider element is provided, so that in the fixing position any movement between the slider element and the main tool body is prevented, wherein the transfer element together with the clamping element form the fixation element.

2. The metal cutting tool according to claim 1 , wherein the main tool body includes the transfer element, the first sealing surface and the outlet of the main tool body being arranged on the transfer element, the outlet of the coolant channel of the transfer element being the outlet of the main tool body, and wherein the inlet of the coolant channel of the transfer element is in connection with the coolant channel of the main tool body.

3. The metal cutting tool according to claim 2 , wherein the inlet of the coolant channel of the transfer element is arranged on the first sealing surface, and wherein the clamping element is arranged so that with the clamping element, the first sealing surface is also pressable against the main tool body.

4. The metal cutting tool according to claim 2 , wherein a sealing element is arranged between the transfer element and the main tool body and/or between the transfer element and the slider element, wherein the sealing element provides a sealed connection between the inlet of the transfer element and the coolant channel of the main tool body and/or the outlet of the transfer element and the inlet of the coolant channel of the slider element, respectively.

5. The metal cutting tool according to claim 4 , wherein the sealing element is at least one O-ring located in a corresponding groove provided on the transfer element and surrounding the outlet.

6. The metal cutting tool according to claim 4 , wherein the transfer element is a cylindrical body arranged within an opening of the main tool body, wherein the transfer element has an outer section with a flattened surface forming the first sealing surface, the second sealing surface being a flattened surface located on the slider element, the opening of the main tool body including a corresponding flattened surface, and wherein the flattened surfaces of the transfer element and of the slider element, and the flattened surfaces of the transfer element and the opening of the main tool body are facing each other.

7. The metal cutting tool according to claim 6 , wherein the axis of the cylindrical body of the transfer element and the adjustment direction form an angle.

8. The metal cutting tool according to claim 7 , wherein the angle is larger than 50°.

9. The metal cutting tool according to claim 1 , wherein the main tool body includes a first and second part, wherein the first part of the main tool body has a shaft for connection with a machine and the second part of the main tool body is mountable at the first part of the main tool body in at least two different positions, wherein the coolant channels of the coolant supply run at least within the second part of the main tool body.

10. The metal cutting tool according to claim 1 , further comprising a drive shaft having first and second threaded portions, wherein the slider element and the main tool body each have a respective threaded portion, wherein the first threaded portion of the drive shaft cooperates with the threaded portion of the slider element and the second threaded portion of the drive shaft cooperates with the threaded portion of the main body such that when the drive shaft is rotated about its axis the slider element is moved in the adjustment direction relative to the main body between the first and second positions.

11. The metal cutting tool according to claim 10 , further comprising an anti-rotation element movable into contact with the slider element to prevent rotation of the slider element within the opening of the main tool body, wherein the anti-rotation element is also arranged as the positioning device, wherein the anti-rotation element includes a wedge-shaped section, and wherein, when the anti-rotation element is moved, the wedge-shaped section is pressed against the transfer element, so that the transfer element is pressed against the elastic element.

12. The metal cutting tool according to claim 1 , further comprising a positioning device movably arranged to contact the transfer element, wherein the main tool body includes an elastic element located so that the transfer element is pressed against the elastic element when the positioning device is moved into contact with the transfer element, and wherein the positioning device, the elastic element and the transfer element are dimensioned so that the transfer element is pressable in a positioning direction perpendicular to the adjustment direction against the elastic element.

13. The metal cutting tool according to claim 1 , wherein the clamping element is a clamping screw guided in a threaded hole of the main tool body and resting on the transfer element.

14. The metal cutting tool according to claim 1 , wherein the slider element includes a nozzle element with an external thread inserted in the coolant channel of the slider element having an internal thread, the nozzle element having an inner channel with a decreasing cross-section.

15. The metal cutting tool according to claim 14 , wherein the exterior of the nozzle element includes a threaded section and a handling section provided with a non-circular cross-section, such as a hexagonal cross-section.

16. The metal cutting tool according to claim 1 , wherein the metal cutting tool is a boring tool or a milling tool.

Assignees

• Sandvik Intellectual Property

Inventors

• Frank Peter

Classifications

• B23C5/28

  Features relating to lubricating or cooling · CPC title

• B23B2250/12

  Cooling and lubrication · CPC title

• B23B29/03407

  by means of screws and nuts · CPC title

• B23C2250/12

  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