Slitting tool configured for fine-tuning

Patent metadata

Field	Value
Publication number	US-9616585-B2
Application number	US-201313917404-A
Country	US
Kind code	B2
Filing date	Jun 13, 2013
Priority date	Jul 12, 2012
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A slitting tool configured for fine-tuning thereof includes basic body, which in turn includes a body portion and a cutting portion extending therefrom. The slitting tool includes a biasing screw which is seated in a biasing bore and is configured to adjust the position of the cutting portion. The biasing screw is configured to engage a biasing surface of the body portion to adjust the cutting portion's position. The biasing surface is oblique relative to the biasing screw for retarding movement of the biasing screw a fine-tuned position.

First claim

What is claimed is:

1. A slitting tool basic body having opposing first and second side surfaces connected by a peripheral edge, and further comprising:
a disc-shaped body portion having an axis of rotation (A R ) and a direction of rotation;
at least one cutting portion extending from the body portion and connected thereto by a neck section thereof, the at least one cutting portion having a head portion provided with a relief portion and a rake portion;
a groove separating the body portion from the cutting portion and having a peripheral opening that is rotationally forward of the neck section in a side view of the body portion along the axis of rotation (A R ), the groove having a first groove surface formed on the body portion and a second groove surface formed on the cutting portion, the groove further having a front end portion remote from the neck section, a rear end portion proximate to the neck section and a central portion extending therebetween;
a threaded biasing bore formed in the cutting portion and opening out to the second groove surface, the biasing bore having a biasing axis extending through a center thereof; and
a biasing surface formed on the first groove surface and located within a plan view of the biasing bore, the biasing surface being obliquely oriented relative to the biasing axis at the intersection thereof; wherein:
the biasing bore is formed rotationally forward of the relief portion, in said side view; and
a biasing screw occupies the biasing bore and contacts the biasing surface, the biasing screw being the only element located in the groove and contacting both the first groove surface and the second groove surface,
the threaded biasing bore is the only threaded bore opening out to the groove.

2. The slitting tool basic body according to claim 1 , wherein along a viewing direction perpendicular to one of the first and second side surfaces, an imaginary tangent line touching the biasing surface forms an acute biasing angle (α) with the biasing axis which fulfills the condition: 35° <α<65°.

3. The slitting tool basic body according to claim 1 , wherein the neck section has a flexural rigidity F within the range 19,280 GPA mm 4 <F <28,920 GPA mm 4 , and preferably about 24,100 GPA mm 4 .

4. The slitting tool basic body according to claim 1 , wherein the biasing surface is a part of a biasing recess extending into the body portion.

5. The slitting tool basic body according to claim 4 , wherein the biasing recess has a conical shape.

6. The slitting tool basic body according to claim 1 , wherein the front and rear end portions each extends from the central portion to a location closer to a peripheral edge of the basic body than the central portion.

7. The slitting tool basic body according to claim 1 , wherein the cutting portion is one of a plurality of cutting portions spaced along the periphery of the body portion.

8. The slitting tool basic body according to claim 1 , wherein the cutting portion is configured for fine-tuning in a single direction only.

9. The slitting tool basic body according to claim 8 , wherein the cutting portion is configured for fine-tuning only in a radial direction of the body portion.

10. The slitting tool basic body according to claim 9 , wherein the biasing bore forms an acute bore angle with the radial direction.

11. The slitting tool basic body according to claim 1 , wherein a cutting edge of the cutting portion has a cutting width greater than a thickness of a remainder of the cutting portion, wherein the cutting width is 8 mm or less.

12. The slitting tool basic body according to claim 1 , wherein the biasing bore opens out to the rake portion of the cutting portion.

13. The slitting tool basic body according to claim 12 , wherein the rake portion has an arc-shape.

14. The slitting tool basic body according to claim 12 , wherein the rake portion forms part of the peripheral edge.

15. The slitting tool basic body according to claim 1 , wherein a diameter of the biasing bore is greater than half a thickness measured between the first and second side surfaces of the basic body at the biasing bore's location.

16. The slitting tool basic body according to claim 1 , wherein the biasing surface is a part of an unthreaded biasing recess extending into the body portion.

17. A slitting tool comprising:
a slitting tool basic body comprising:
opposing first and second side surfaces connected by a peripheral edge;
a disc-shaped body portion having an axis of rotation (A R ) and a direction of rotation;
at least one cutting portion extending from the body portion and connected thereto by a neck section thereof, the at least one cutting portion having a head portion provided with a relief portion and a rake portion;
a groove separating the body portion from the cutting portion and having a peripheral opening that is rotationally forward of the neck section in a side view of the body portion along the axis of rotation (A R ), the groove having a first groove surface formed on the body portion and a second groove surface formed on the cutting portion, the groove further having a front end portion remote from the neck section, a rear end portion proximate to the neck section and a central portion extending therebetween;
a threaded biasing bore formed in the cutting portion and opening out to the second groove surface, the threaded biasing bore is the only threaded bore opening out to the groove, the biasing bore having a biasing axis extending through a center thereof; and
a biasing surface formed on the first groove surface and located within a plan view of the biasing bore, the biasing surface being obliquely oriented relative to the biasing axis at an intersection thereof; and
a biasing screw located in the biasing bore, the biasing screw having a first end configured to mate with a fastening tool, a second end configured to press against the biasing surface and a screw body portion extending between the first and second ends;
wherein:
the biasing bore is formed rotationally forward of the relief portion, in said side view;
the slitting tool is adjustable between:
an initial position in which the biasing screw and biasing surface are not in contact with one another, and
a final position in which the second end of the biasing screw presses against the biasing surface and the cutting portion is repositioned, relative to the body portion, to a fine-tuned position;

the biasing screw is the only element located in the groove and contacting both the first groove surface and the second groove surface, when the slitting tool is in the final position; and
the at least one cutting portion comprises one or more cutting edges which collectively protrude beyond both the first and second surfaces in an axial direction along the axis of rotation (A R ), and establish a width of cut of the slitting tool.

18. The slitting tool according to claim 17 , wherein the second end of the biasing screw contacts only the biasing surface.

19. The slitting tool according to claim 17 , wherein the biasing screw is of a headless type.

20. The slitting tool according to claim 17 , wherein the biasing screw's second end has a tapered shape.

21. The slitting tool according to claim 17 , wherein the biasing screw is recessed relative to the rake portion of the cutting portion.

22. The slitting tool according to claim 17 , wherein the biasing bore and/or the biasing screw further comprises a rotation inhibitor arrangement.

Assignees

• Iscar Ltd

Inventors

• Athad Shimon

Classifications

• B23C5/08

  Disc-type cutters · CPC title

• B23C2210/161

  Elastically deformable clamping members · CPC title

• B26D3/12 Primary

  Slitting marginal portions of the work, i.e. forming cuts, without removal of material, at an angle, e.g. a right angle, to the edge of the work · CPC title

• Y10T83/9372

  Rotatable type · CPC title

• Y10T83/9403

  Disc type · CPC title