Device for adjusting an object

Patent metadata

Field	Value
Publication number	US-11612920-B2
Application number	US-201917272454-A
Country	US
Kind code	B2
Filing date	Aug 16, 2019
Priority date	Aug 29, 2018
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

A device for adjusting an object, for example a roll in a roll stand including a rotatably mounted pressure spindle and a torque motor having a stator and a rotor for rotationally driving the pressure spindle. In addition, the device includes a fixedly arranged pressure nut, which is engaged with the pressure spindle in a rotationally coupled manner via a thread to generate an axial movement of the pressure spindle in case of its rotation. Due to the axial movement generated in this way, the device can generate an axial adjustment force and transmit it to the object to be adjusted.

First claim

The invention claimed is:

1. A device for adjusting an object, comprising:
a rotatably mounted pressure spindle;
a torque motor having a stator and a rotor for rotating the pressure spindle, wherein the stator is designed in the form of at least one electromagnetic coil and is fixedly installed;
a fixedly arranged pressure nut, which is engaged in a rotationally coupled manner via a thread with the pressure spindle to generate an axial movement of the pressure spindle in case of its rotation and to generate and transmit an axial adjusting force to the object;
wherein
the torque motor is designed as an internal rotor motor, wherein the rotor rotates in the stator;
the rotor of the torque motor is designed in the form of a rotatably mounted multi-spline hub, and
the motor-side end of the pressure spindle is designed in the form of a multi-spline shaft, which is inserted into the multi-spline hub and is engaged in a rotationally-coupled manner with the multi-spline hub to rotate the pressure spindle;
to adjust a roll as the object in a roll stand for rolling metallic rolled material.

2. A device for adjusting an object, comprising:
a rotatably mounted pressure spindle;
a torque motor having a stator and a rotor for rotating the pressure spindle, wherein the stator is designed in the form of at least one electromagnetic coil and is fixedly installed;
a fixedly arranged pressure nut, which is engaged in a rotationally coupled manner via a thread with the pressure spindle to generate an axial movement of the pressure spindle in case of its rotation and to generate and transmit an axial adjusting force to the object;
wherein
the torque motor is designed as an internal rotor motor, wherein the rotor rotates in the stator;
the rotor of the torque motor is designed in the form of a rotatably mounted multi-spline hub, and
the motor-side end of the pressure spindle is designed in the form of a multi-spline shaft, which is inserted into the multi-spline hub and is engaged in a rotationally-coupled manner with the multi-spline hub to rotate the pressure spindle;
to adjust a pressure ram as the object in a slab upsetting press.

3. A roll stand, comprising:
a roll for rolling metallic rolled material,
wherein a device for adjusting the roll, comprising:
a rotatably mounted pressure spindle;
a torque motor having a stator and a rotor for rotating the pressure spindle, wherein the stator is designed in the form of at least one electromagnetic coil and is fixedly installed;
a fixedly arranged pressure nut, which is engaged in a rotationally coupled manner via a thread with the pressure spindle to generate an axial movement of the pressure spindle in case of its rotation and to generate and transmit an axial adjusting force to the object;
wherein
the torque motor is designed as an internal rotor motor;
the rotor rotates in the stator;
the rotor of the torque motor is designed in the form of a rotatably mounted multi-spline hub, and
the motor-side end of the pressure spindle is designed in the form of a multi-spline shaft, which is inserted into the multi-spline hub and is engaged in a rotationally-coupled manner with the multi-spline hub to rotate the pressure spindle.

4. The roll stand as claimed in claim 3 , wherein the multi-spline hub is manufactured from a nonmagnetic material.

5. The roll stand as claimed in claim 3 , wherein a housing, on which the stator is fixedly mounted, the pressure nut is fixedly mounted, and/or the rotor in the form of the multi-spline hub is fixedly mounted in the axial direction but is rotatably mounted.

6. The roll stand as claimed in claim 3 , wherein a braking device for braking and holding the rotor.

7. The roll stand as claimed in claim 3 , wherein a displacement transducer for detecting the axial position or displacement position of the pressure spindle.

8. The roll stand as claimed in claim 3 , wherein at least one permanent magnet is attached on the periphery of the rotor.

9. The roll stand as claimed in claim 4 , wherein a housing, on which the stator is fixedly mounted, the pressure nut is fixedly mounted, and/or the rotor in the form of the multi-spline hub is fixedly mounted in the axial direction but is rotatably mounted.

10. The roll stand as claimed in claim 4 , wherein a displacement transducer for detecting the axial position or displacement position of the pressure spindle.

11. The roll stand as claimed in claim 5 , wherein a displacement transducer for detecting the axial position or displacement position of the pressure spindle.

12. The roll stand as claimed in claim 6 , wherein a displacement transducer for detecting the axial position or displacement position of the pressure spindle.

13. The roll stand as claimed in claim 4 , wherein at least one permanent magnet is attached on the periphery of the rotor.

14. The roll stand as claimed in claim 5 , wherein at least one permanent magnet is attached on the periphery of the rotor.

15. The roll stand as claimed in claim 6 , wherein at least one permanent magnet is attached on the periphery of the rotor.

16. The roll stand as claimed in claim 7 , wherein at least one permanent magnet is attached on the periphery of the rotor.

Assignees

• Sms Group Gmbh

Inventors

• Bender Hans-Jürgen
• Paersch Volker

Classifications

• B21B31/07

  Adaptation of roll {neck} bearings (bearings in general F16C) · CPC title

• H02K26/00

  Machines adapted to function as torque motors, i.e. to exert a torque when stalled · CPC title

• B21B31/18 Primary

  by moving rolls axially · CPC title

• H02K7/06

  Means for converting reciprocating motion into rotary motion or vice versa · CPC title

• B21B31/24 Primary

  by screws · CPC title