Tool holder

Patent metadata

Field	Value
Publication number	US-10919084-B2
Application number	US-201815976080-A
Country	US
Kind code	B2
Filing date	May 10, 2018
Priority date	May 16, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A C-shaped tool holder consisting of an integral frame structure that is delimited by an inner and an outer edge, each C-shaped, in which the C-shaped edges are made from and are connected to each other by at least five multiple-vertex frame bodies that are integrated into the frame structure, in particular triangles, quadrilaterals and pentagons, wherein in each case an inner side of the individual multiple-vertex frame bodies is a connecting surface, continuously curving along a circumferential direction, along the sides of the respective multiple-vertex frame body, and the inner and the outer C-shaped edge is each delimited to the outside by a continuously curving lateral surface.

First claim

The invention claimed is:

1. A C-shaped tool holder consisting of an integral frame structure that is delimited by an inner and an outer edge, each C-shaped, in which the C-shaped edges are made from and connected to each other by at least five multiple-vertex frame bodies that are integrated into the frame structure, wherein in each case an inner side of the individual multiple-vertex frame bodies is a connecting surface, continuously curving along the circumferential direction, along the sides of the respective multiple-vertex frame body, and the inner and the outer C-shaped edge is each delimited to the outside by a continuously curving lateral surface.

2. The tool holder according to claim 1 , the C-shape of which consists of a first and a second leg arranged opposite each other and a connecting leg, wherein the connecting leg connects the first and the second leg to each other to form a C-shape.

3. The tool holder according to claim 2 , the connecting leg of which consists of at least two frame triangles and one multiple-vertex frame body, and the first and second leg of which each consist of at least one multiple-vertex frame body.

4. The tool holder according to claim 3 , the connecting leg of which consists of at least four frame triangles and one frame quadrilateral, and the first and second leg of which each consist of at least one frame quadrilateral or one frame pentagon.

5. The tool holder according to claim 3 , the multiple-vertex frame bodies of which each enclose a free space having a surface that is surrounded by a bar structure with a depth and a width, the depth of which is defined orthogonally to the surface and the width of which is defined parallel to the surface, wherein the depth surfaces of the multiple-vertex frame bodies that are arranged opposite each other, are spaced apart from each other by the width of the bar structure and run parallel to the depth form continuously curving frame surfaces.

6. The tool holder according to claim 5 , the depth surfaces of which, considered in the depth direction, form an inner and an outer contour line per multiple-vertex frame body that are each defined as a periodic fourth order NURBS curve on the basis of a plurality of generated junction points at least in corner areas of the respective multiple-vertex frame body.

7. The tool holder according to claim 3 , the connecting leg of which consists of at least four frame triangles and one frame quadrilateral, and the first and second leg of which each consist of at least one frame quadrilateral or one frame pentagon and the multiple-vertex frame bodies of which each enclose a surface that is surrounded by a bar structure with a depth and a width, the depth of which is defined orthogonally to the surface and the width of which is defined parallel to the surface, wherein the depth surfaces of the multiple-vertex frame bodies that are arranged opposite each other, are spaced apart from each other by the width of the bar structure and run parallel to the depth form continuously curving frame surfaces.

8. The tool holder according to claim 7 , the depth surfaces of which, considered in the depth direction, form an inner and an outer contour line per multiple-vertex frame body that are each defined as a periodic fourth order NURBS curve on the basis of a plurality of generated junction points at least in corner areas of the respective multiple-vertex frame body.

9. The tool holder according to claim 2 , the connecting leg of which consists of at least four frame triangles and one frame quadrilateral, and the first and second leg of which each consist of at least one frame quadrilateral or one frame pentagon.

10. The tool holder according to claim 2 in which the first and the second leg each has a free end, wherein a drive unit or an attachment unit is provided integrally or modularly on at least one end.

11. The tool holder according to claim 1 that is produced integrally from metal or from a hybrid fiber-reinforced plastic (FRP) or a fiber-plastic composite (FPC).

12. The tool holder according to claim 1 , in which the multiple-vertex frame bodies are triangles, quadrilaterals and pentagons.

13. A joining device that has a C-shaped tool holder according to claim 1 with a drive unit and a counter bearing.

14. The joining device according to claim 13 , in which the joining device is a rivet setting device and the counter bearing is a die.

15. A design method of a C-shaped tool holder according to claim 1 with an integral frame structure that is delimited by an inner and an outer edge, each C-shaped, with the following steps:
a. Defining a first and a second leg that are arranged opposite each other and are connected with a connecting leg to form a C-shaped structure,
b. Forming the first and the second leg as well as the connecting leg from at least five multiple-vertex frame bodies that are connected to each other, and
c. Forming a C-shaped outer edge and a C-shaped inner edge of the tool holder consisting of the multiple-vertex frame bodies that are connected to each other by a continuously curving C-shaped outer lateral surface and a continuously curving C-shaped inner lateral surface, as well as
d. Forming the individual multiple-vertex frame bodies each with a continuously curving inner frame surface.

16. The design method according to claim 15 with the further steps:
Defining each multiple-vertex frame body in a common design plane as a frame polygon and
Defining an offset contour within the design plane that is spaced apart on both sides from the frame polygon so that the offset contour determines a width of the multiple-vertex frame body within the design plane and is composed of two offset polygons.

17. The design method according to claim 16 in which the width of the offset contour on the individual sides of the frame polygon is the same or different.

18. The design method according to claim 16 with the further steps:
Generating junction points at the corners and in the middle of the sides of the offset polygons and
Generating periodic fourth order NURBS curves consisting of third degree polynomials on the basis of the generated junction points.

19. The design method according to claim 15 with the further step of computer-based implementing of the design method and creating a computer-based data set for producing the tool holder.

20. A production method of a C-shaped tool holder according to claim 1 with an integral frame structure, having the following steps:
a. Receiving a computer-based data set from a CAD system for the C-shaped tool holder to be produced,
b. Forwarding the computer-based data set to a production machine, and
c. Producing and finishing the C-shaped tool holder according to the computer-based data set.

Assignees

• Boellhoff Verbindungstechnik Gmbh

Inventors

• Rehling Stefan

Classifications

• B21J15/10 Primary

  Riveting machines (electric heating elements H05B) · CPC title

• B23K11/318

  Supporting devices for electrode holders · CPC title

• B21J15/30

  Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters · CPC title

• B23K2101/20

  Tools · CPC title

• B23K26/402

  involving non-metallic material, e.g. isolators · CPC title