Device, in particular machine, for producing a Wiegand wire from a wire, in particular a pulse wire, and method for operating a device

Patent metadata

Field	Value
Publication number	US-12076777-B2
Application number	US-201816497144-A
Country	US
Kind code	B2
Filing date	Mar 1, 2018
Priority date	Mar 24, 2017
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

In a device, in particular machine, for producing Wiegand wire from a wire, in particular pulse wire, and a method for operating a device, the device having a first clamping chuck, a second clamping chuck, and a third clamping chuck, the wire being fed through each of the three clamping chucks, in particular so that the wire is able to be connected in a releasable and torsionally fixed manner to the three clamping chucks, in particular able to be connected to the three clamping chucks in a releasable, torsionally fixed and nonpositive manner. The clamping chucks are set apart from one another in the wire direction, and the second clamping chuck is situated between the first and the third clamping chuck in the wire direction. The second clamping chuck is rotatably mounted so that a torsion is able to be applied to a first wire section and the reverse torsion is able to be applied to a second wire section, the first wire section being situated between the first clamping chuck and the second clamping chuck, the second wire section being situated between the third clamping chuck and the second clamping chuck. The distance in the wire direction between the first and the second clamping chuck is controllable and/or regulatable with the aid of a first linear actuator, and the distance in the wire direction between the second and the third clamping chuck is controllable and/or regulatable with the aid of a second linear actuator.

First claim

The invention claimed is:

1. A device for producing a Wiegand wire and/or a pulse wire from a wire, comprising:
a first clamping chuck;
a second clamping chuck;
a third clamping chuck;
a first linear actuator; and
a second linear actuator;
wherein the clamping chucks are adapted to feed the wire therethrough, the wire being releasably connectable in a torsionally fixed manner to the three clamping chucks and/or connectable to the three clamping chucks in a releasable, torsionally fixed and nonpositive manner;
wherein the clamping chucks are set apart from one another in a wire direction, the second clamping chuck being located between the first clamping chuck and the third clamping chuck in the wire direction;
wherein the second clamping chuck is rotatably mounted to apply a torsion to a first wire section and to apply a reverse torsion to a second wire section, the first wire section being located between the first clamping chuck and the second clamping chuck, the second wire section being located between the third clamping chuck and the second clamping chuck;
wherein the first linear actuator is adapted to control and/or regulate a distance in the wire direction between the first clamping chuck and the second clamping chuck; and
wherein the second linear actuator is adapted to control and/or regulate a distance in the wire direction between the second clamping chuck and the third clamping chuck.

2. The device according to claim 1 , wherein the three clamping chucks are electrically insulated from the rest of the device; and
wherein: (a) a voltage source is connected by a first pole to the first clamping chuck and by a second pole to the third clamping chuck, to apply a current to the first wire section and the second wire section; (b) a voltage source is connected by a first pole to the first clamping chuck and by a second pole to the second clamping chuck, to apply a current to the first wire section; and/or (c) a voltage source is connected by a first pole to the second clamping chuck and by a second pole to the third clamping chuck, to apply a current to the second wire section.

3. The device according to claim 1 , wherein the first clamping chuck is accommodated in a first stretching unit, the third clamping chuck is accommodated in a second stretching unit, and the second camping chuck is accommodated in a rotatable manner in a torsion unit.

4. The device according to claim 3 , wherein an electric motor and/or a belt drive driven by an electric motor is adapted to rotate the second clamping chuck.

5. The device according to claim 3 , wherein the first linear actuator is adapted to linearly move the first stretching unit relative to the torsion unit, in and/or counter to the wire direction, and/or the second linear actuator is adapted to linearly move the second stretching unit relative to the torsion unit, in and/or counter to the wire direction.

6. The device according to claim 3 , wherein the first linear actuator includes a spindle drive driven by a first electric motor, the first electric motor being firmly connected to a base plate, a rotor shaft of the first electric motor connected in a torsionally fixed manner to a spindle operatively connected with a spindle nut firmly connected to the first stretching unit and/or to the first clamping chuck; and/or
wherein the second linear actuator includes a spindle drive driven by a third electric motor, the third electric motor being firmly connected to the base plate, a rotor shaft of the third electric motor connected in a torsionally fixed manner to a further spindle operatively connect to a further spindle nut firmly connected to the second stretching unit and/or to the third clamping chuck.

7. The device according to claim 3 , wherein the torsion unit and/or a second motor is firmly connected to a base plate, the second motor being adapted to drive a belt drive that operates the second clamping chuck and/or rotate the second clamping chuck to generate torsion in a respective wire section to be processed.

8. The device according to claim 3 , further comprising a sensor adapted to detect a tensile stress in a wire section to be processed, and being located in the first and/or second stretching unit.

9. The device according to claim 1 , further comprising a sensor adapted to detect at least one magnetic variable.

10. The device according to claim 1 , wherein the second clamping chuck is rotatably mounted relative to the first clamping chuck and the third clamping chuck about an axis of rotation parallel to the wire direction to apply the torsion to the first wire section and to apply the reverse torsion to the second wire section.

11. The device according to claim 1 , further comprising a base extending along the wire direction, the third clamping chuck being immovably fixed in the wire direction to the base, the first linear actuator being adapted to control and/or regulate the distance in the wire direction along the base between the first clamping chuck and the second clamping chuck, the second linear actuator being adapted to control and/or regulate the distance in the wire direction along the base between the second clamping chuck and the third clamping chuck.

12. A method for operating a device as recited in claim 1 , comprising:
feeding a section of the wire to be processed through the three clamping chucks;
operating and/or closing the clamping chucks to hold the wire by the clamping chucks in a nonpositive manner;
rotating the second clamping chuck in an axis of rotation coaxially aligned to the wire direction;
varying and/or enlarging a distance between the first clamping chuck and the second clamping chuck and between the third clamping chuck and the second clamping chuck;
applying a current to the wire between at least two of the clamping chucks; and
opening the clamping chucks and advancing the wire so that a newly-to-be-processed section of the wire is fed through the three clamping chucks.

13. The method according to claim 12 , wherein the wire is made of a material that includes cobalt, iron, and vanadium.

14. The method according to claim 12 , wherein the wire is made of a material that includes between 5% and 20% vanadium, between 40% and 65% cobalt, and between 35% and 60% iron.

15. The method according to claim 12 , wherein the feeding, the operating and/or closing, the rotating, the varying and/or enlarging, the applying, and the opening are performed repeatedly.

16. The method according to claim 12 , wherein the current is applied in the applying step between the first clamping chuck and the third clamping chuck, between the first clamping chuck and the second clamping chuck, and/or between the second clamping chuck and the third clamping chuck.

17. The method according to claim 12 , further comprising demagnetizing a wire section guided out of the third clamping chuck.

18. The method according to claim 12 , further comprising detecting a tensile force of the wire in the first wire section and/or the second wire section.

19. The method according to claim 18 , wherein the tensile force is detected with the aid of a tensile force sensor.

20. The method according to claim 12 , further comprising:
determining at least one physical quality of the wire; and
controlling the device as a function of the physical quality to automatically obtain an optimal value of the physical quality.

21. The method according to claim 20 , wherein the physical quality includes a value of an electrical and/or magnetic quality o

Assignees

• Sew Eurodrive Gmbh & Co Kg

Inventors

• Simon Olaf
• Rädle Dennis
• Hoffmann Julian
• Fuchs Daniel Simon

Classifications

• H01F41/04

  for manufacturing coils {(coils for transformer or inductances H01F27/28)} · CPC title

• H01F1/0304

  adapted for large Barkhausen jumps or domain wall rotations, e.g. WIEGAND or MATTEUCCI effect (H01F1/143 and H01F1/15391 take precedence) · CPC title

• G01R33/0052

  Manufacturing aspects; Manufacturing of single devices, i.e. of semiconductor magnetic sensor chips (devices based on galvano-magnetic effect or the like H10N50/85) · CPC title

• B23B31/24

  characterised by features relating primarily to remote control of the gripping means {(B23B31/201 takes precedence)} · CPC title

• B21F23/00

  Feeding wire in wire-working machines or apparatus · CPC title