BOLT JOINING METHOD AND TOOLS THEREFOR

• US 20140025196A1
• Filed: 09/27/2013
• Published: 01/23/2014
• Est. Priority Date: 03/29/2011
• Status: Active Grant

• Current Assignee: Newfrey Llc (Stanley Black & Decker, Inc.)
• Original Assignee: Newfrey Llc (Stanley Black & Decker, Inc.)
• Inventors: HAIN, Jochen, SCHMIDT, Frank
• Granted Patent: US 9,625,896 B2
• Time in Patent Office: Days
• US Class Current: 700/192
• CPC Class Codes: B23K 11/0053 Stud welding, i.e. resistive with an arc B23K9/20
• CPC Class Codes: B23K 37/0217 the guide member being fixed to the workpiece
• CPC Class Codes: B23K 37/0426 Fixtures for other work
• CPC Class Codes: B23K 9/202 by means of portable equipment, e.g. stud welding gun
• CPC Class Codes: G05B 19/402 characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position G05B19/19 takes precedence

Abstract

A method for carrying out a stud joining process by a tool performing a working step on a workpiece and the working step is carried out while taking into account at least one parameter value which is selected from a set of values, and the working step is to be carried out at a certain position on the workpiece, and the position determines the parameter value. The method comprises the steps of: storing the parameter value for the position in an RFID transponder; locating the RFID transponder on the workpiece in the region of the position before the working step is carried out, reading the parameter value out from the RFID transponder with an RFID communication device associated with the tool.

Claims

1. A method for carrying out a stud joining process by a working step on a workpiece by means of a tool, and the working step is carried out while taking into account at least one parameter value which is selected from a set of values, and the working step is to be carried out at a certain position on the workpiece, and the position determines the parameter value,

wherein the method comprises the steps of:

storing the parameter value for the position in an RFID transponder;

locating the RFID transponder on the workpiece in the region of the position before the working step is carried out,

reading the parameter value out from the RFID transponder with an RFID communication device associated with the tool.

2. A method according to claim 1, wherein the step of locating the RFID transponder on the workpiece includes a step of arranging the RFID transponder temporarily on the workpiece.

3. A method according to claim 1 and further comprising the step of securing the RFID transponder to a holding device before the step of locating the RFID transponder on the workpiece.

4. A method according to claim 3, wherein the holding device is a positioning device and the method further comprises the step of defining the position of the working step with the positioning device.

5. A method according to claim 4, wherein the positioning device includes a plurality of positioners for defining a plurality of positions on the workpiece and the RFID transponder is secured to one of the positioners.

6. A method according to claim 1 and further comprising the steps of:

transmitting the read-out parameter value to a control device; and

setting the tool on the basis of the read-out parameter value.

7. A method according claim 1 and further comprising the step of providing the RFID transponder with a coil arranged concentrically around a processing axis.

8. A stud joining tool for carrying out a stud joining process by a working step on a workpiece, and the working step is carried out while taking into account at least one parameter value which is selected from a set of values, and the working step is to be carried out at a certain position on the workpiece, and the position determines the parameter value, and wherein the tool comprises:

an RFID communication device (34) located in a working region of the tool and operable for at least one of reading out a parameter value from an RFID transponder and for writing a parameter value into an RFID transponder.

9. A stud joining tool according to claim 8 and further comprising a control device connected to the RFID communication device and operable for setting a tool parameter according to a parameter value read-out from the RFID transponder.

10. A stud joining tool according to claim 8, wherein the RFID communication device is mounted on the tool so as to be movable in a direction parallel to a processing axis.

11. A stud joining tool according to claim 8, wherein the RFID communication device includes a coil arranged concentrically about a processing axis in such a way that communication with the RFID transponder can be effected substantially independently of a rotary position of the tool about the processing axis.

12. A positioning device for carrying out a stud joining process by a working step on a workpiece, and the working step is carried out while taking into account at least one parameter value which is selected from a set of values, and the working step is to be carried out at a certain position on the workpiece, and the position determines the parameter value, and wherein the positioning device comprises:

a plurality of positioners operable for defining a plurality of positions on the workpiece; and

an RFID transponder secured to one of the positioners.

13. A positioning device according to claim 12, wherein one of the positioners is a bushing.

14. A positioning device according to claim 13, wherein the bushing includes:

an outer sleeve;

an inner ring connected to the outer sleeve; and

wherein the RFID transponder is integrated into the inner ring.

15. A positioning device according to claim 13, wherein the RFID transponder includes a coil arranged concentrically to a longitudinal axis of the bushing.