Tool components and related machines and methods

Patent metadata

Field	Value
Publication number	US-10046375-B2
Application number	US-201113240367-A
Country	US
Kind code	B2
Filing date	Sep 22, 2011
Priority date	Mar 25, 2009
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

In some aspects of the invention, tool components for processing of plate-like workpieces, the tool component include an end face adjoined by a tool region provided for regrinding, the tool region being configured to undergo regrinding as a result of wear; and at least one identification mark located on the tool component to indicate the amount of shortening of the tool region as a result of regrinding.

First claim

What is claimed is:

1. A tool die for processing of plate-like workpieces, the tool die comprising:
an end face adjoined by a tool region provided for regrinding; and
at least one identification mark located on the tool die to indicate an amount of shortening of the tool region as a result of regrinding,
wherein the tool region comprises a frustoconical inclined portion formed around the end face,
wherein the identification mark extends circumferentially along an outer surface of the frustoconical inclined portion in a substantially helical manner,
wherein the tool die defines a smooth bore extending from the end face, the smooth bore being configured to receive a punching tool for processing a plate-like workpiece supported above the end face of the tool die, and
wherein the identification mark travels from the end face in an axial direction that is perpendicular to the end face to a maximum axial length of the identification mark, wherein the identification mark terminates at a single revolution around the end face at the maximum axial length, and wherein the maximum axial length corresponds to a maximum regrinding length of 1 mm from an initial axial position of the end face in a new, non-ground state of the tool die.

2. The tool die according claim 1 , further comprising a scale for determining the amount of shortening of the tool region from the identification mark.

3. The tool die according to claim 2 , wherein the scale is in the form of a dial.

4. The tool die according to claim 1 , wherein at least one characteristic of the identification mark changes axially with respect to the end face.

5. The tool die according to claim 4 , wherein the characteristic changes gradually.

6. The tool die according to claim 4 , wherein the characteristic is shape or color.

7. The tool die according to claim 1 , wherein the identification mark is spaced from the end face so that it is located outside the tool region that is ground during a regrinding process.

8. The tool die according to claim 1 , wherein the identification mark is spaced from the end face by a distance that corresponds to a maximum regrinding length of the tool die.

9. The tool die according to claim 1 , wherein the identification mark comprises a helical line.

10. The tool die according to claim 1 , wherein the end face of the tool die defines an opening from which the smooth bore extends, the opening being configured to receive the punching tool.

11. The tool die according to claim 1 , wherein the amount of shortening is provided along a direction perpendicular to the end face.

12. The tool die according to claim 1 , wherein the smooth bore is configured to receive a portion of the plate-like workpiece that is punched through by the punching tool.

13. The tool die according to claim 1 , wherein the frustoconical inclined portion has a circular cross-sectional shape with a plurality of grooves that define a scale for determining the amount of shortening of the tool region from the identification mark.

14. The tool die according to claim 1 , wherein in the new, non-ground state of the tool die, the identification mark is visible, in its entirety, within a 360 degree angle traversed by the identification mark within the single revolution, and wherein in a completely reground state of the tool die, the identification mark is completely removed such that the identification mark is not visible.

15. The tool die according to claim 14 , wherein in the completely reground state of the tool die, a part of the frustoconical inclined portion remains visible.

16. The tool die according to claim 1 , wherein the end face has an annular shape.

17. A machine tool for punching and/or shaping plate-like workpieces, the machine tool comprising:
a punching tool; and
a tool die comprising:
an end face adjoined by a tool region provided for regrinding, and
at least one identification mark located on the tool die to indicate an amount of shortening of the tool region as a result of regrinding,

wherein the tool region comprises an inclined portion that is formed circumferentially around the end face,
wherein the identification mark extends circumferentially along an outer surface of the inclined portion in a substantially helical manner, and
wherein the tool die defines a smooth bore extending from the end face, the smooth bore being configured for receiving the punching tool.

Assignees

• Buettner Stefan
• Laib Wolfgang
• Bruechle Arnim
• Hees Markus
• Coskun Yakup
• Trumpf Werkzeugmaschinen Gmbh Co Kg

Inventors

• Buettner Stefan
• Laib Wolfgang
• Bruechle Arnim
• Hees Markus
• Coskun Yakup

Classifications

• B21D28/265

  with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template · CPC title

• B21D28/34

  Perforating tools; Die holders · CPC title

• Y10T83/9437

  Shear-type female tool · CPC title

• Y10T83/866

  Indicates wear · CPC title

• B21D28/14 Primary

  Dies (ejecting or stripping-off devices arranged in punching machines or tools B21D45/00) · CPC title