Adjustment aid for a joining device having a punch and a counter-tool, and method for adjusting the joining device

Patent metadata

Field	Value
Publication number	US-9968987-B2
Application number	US-201414895357-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	Jun 4, 2013
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

The present disclosure provides an adjustment aid for a joining device having a punch and a counter-tool which can be oriented coaxially to one another and can be moved axially towards each other for a joining movement relative to one another. Furthermore, the present disclosure provides a method for adjusting a joining device with a punch and counter-tool. A grid marking is embossed in a reshaped test part with the assistance of an embossable grid marking on a punch surface or on a counter surface of the counter-tool. This grid marking is evaluable in comparison to the discernible impressions of the punch surface and counter surface of the counter-tool.

First claim

The invention claimed is:

1. An adjustment aid for a joining device having a punch and a counter-tool which can be oriented coaxially to one another and are moved axially towards each other during a joining movement, wherein
the counter-tool comprises an at least partially flat counter surface which is arranged opposite an at least partially flat punch surface of the punch, and a grid marking which is provided on the counter surface, such that the grid marking is utilized to emboss a test part which is shaped by the counter-surface and the punch surface;
wherein the counter-tool is a pot-shaped die in which an insertion plate is located, the insertion plate providing the counter surface of the counter-tool.

2. The adjustment aid according to claim 1 , wherein the insertion plate is formed complementary with a base of the pot-shaped die on a side of the insertion plate facing away from the punch.

3. The adjustment aid according to claim 1 , which a closing head is produced by the punch in combination with either a punch rivet or a test body.

4. An adjustment aid for a joining device having a punch and a counter-tool which can be oriented coaxially to one another and are moved axially towards each other during a joining movement, wherein
the counter-tool comprises an at least partially flat counter surface which is arranged opposite an at least partially flat punch surface of the punch, and a grid marking which is provided on the counter surface, such that the grid marking is utilized to emboss a test part which is shaped by the counter-surface and the punch surface wherein the counter-tool is a pot-shaped die which provides a base, and the base provides a counter surface of the counter-tool.

5. An adjustment aid for a joining device having a punch and a counter-tool which can be oriented coaxially to one another and are moved axially towards each other during a joining movement, wherein
the counter-tool comprises an at least partially flat counter surface which is arranged opposite an at least partially flat punch surface of the punch, and a grid marking which is provided on the counter surface such that the grid marking is utilized to emboss a test part which is shaped by the counter-surface and the punch surface wherein the counter-tool is a test die which has a free-standing projection which projects toward the punch and provides the counter surface with the grid marking wherein the counter-tool is formed such that it includes a clearance surrounding the projection.

6. The adjustment aid according to claim 5 wherein the counter surface with the grid marking forms a side of the projection facing the punch, and the projection has the same outer diameter as the punch surface of the punch or the same diameter as a test body.

7. The adjustment aid according to claim 6 , wherein the joining device comprises a hold-down device by which the test part is compressed when a radial clearance is left around the punch or the test body.

8. The adjustment aid according to claim 7 , wherein the test die is ring shaped and radially surrounds the projection at a distance and is arranged opposite the hold-down device.

9. The adjustment aid according to claim 5 wherein the joining device comprises a hold-down device by which the test part is compressed when a radial clearance is provided around the punch or a test body.

10. The adjustment aid according to claim 9 , wherein the test die is ring-shaped and radially surrounds the projection at a distance and is arranged opposite the hold-down device.

11. The adjustment aid according to claim 5 , wherein the punch surface of the punch or a test body which forms the punch surface provides a second grid marking such that the grid marking on the punch surface or the test body and the grid marking on the counter surface emboss the test part during the joining movement.

12. The adjustment aid according to claim 11 , wherein the test part has a through-hole which can be arranged between the punch and counter surface as an orientation aid.

13. An adjustment aid for a joining device having a punch and a counter-tool which can be oriented coaxially to one another and can be moved axially towards each other during a joining movement, wherein
the counter-tool comprises an at least partially flat counter surface which is arranged opposite an at least partially flat punch surface of the punch, and a grid marking that is utilized to emboss a test part which is shaped by the counter-surface and the punch surface, wherein the counter-tool includes a die with a free-standing projection projecting toward the punch and the counter-tool is formed such that it includes a clearance surrounding the projection, wherein when the punch and the counter-tool are moved axially toward each other two closing rings are formed on a workpiece acted upon by the punch and the counter-tool, and wherein the counter surface and/or the punch surface provide the grid marking by which a misalignment between the punch and counter-tool can be determined.

14. A method for adjusting a joining device having a punch and a counter-tool which can be oriented coaxially to one another and are moved axially towards each other during a joining movement, wherein the method comprises:
performing the joining movement of the punch relative to the counter-tool such that an at least partially flat counter surface of the counter tool or an at least partially flat punch surface of the punch, emboss a grid marking on a test part,
evaluating the grid marking on the test part, and
changing the orientation of the punch and counter-tool relative to each other to coaxially align the punch and counter-tool.

15. The method according to claim 14 wherein the counter tool is a die including the counter surface and the grid marking is formed by the counter surface, and wherein the method further includes:
creating a closing head within the die and embossing the grid marking in the closing head, and
evaluating the embossed grid marking in comparison to an edge area of the closing head.

16. The method according to claim 14 wherein the counter-tool is a die with a free-standing projection which projects toward the punch and the projection provides the counter surface opposite the punch surface of the punch,
wherein the joining movement is performed with the punch surface against the counter surface such that one closing ring is formed on each of the opposite sides of the test part, and the closing rings are evaluable.

17. The method according to claim 16 , further including:
imaging the test part with at least one camera in order to perform the evaluating step.

18. The method according to claim 17 wherein the imaging step includes imaging two opposite sides of the test part with two cameras, the imaging axes of which are coaxially aligned with each other, and the evaluating step includes evaluating the two imaged sides of the test part.

19. The method according to claim 14 wherein the grid marking is formed by one or both of the counter surface and the punch surface and wherein the method further includes:
embossing the grid marking in at least one side of the test part.

20. The method according to claim 14 , further including:
imaging the test part with at least one camera in order to perform the evaluating step.

21. The method according to claim 20 wherein the imaging step includes imaging two opposite sides of the test part with two cameras, the imaging axes of which are coaxially aligned with each other, and the evaluating ste

Assignees

• Boellhoff Verbindungstechnik Gmbh

Inventors

• Henke Dennis
• Heger Mathias
• Jakobsche Andreas

Classifications

• B21J15/02 Primary

  Riveting procedures · CPC title

• B21J15/28

  Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups · CPC title

• B21J15/36

  Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets · CPC title

• B21K23/00 Primary

  Making other articles · CPC title

• B21C51/005

  Marking devices · CPC title