Method and assembly for determining and/or producing a drive or parts for a drive and interface and method for determining an operational reliability factor SB

Patent metadata

Field	Value
Publication number	US-10036688-B2
Application number	US-201314039776-A
Country	US
Kind code	B2
Filing date	Sep 27, 2013
Priority date	Oct 11, 2001
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

An interface and method for determining an operational reliability factor S B for a drive, including gear unit and motor, provided for a load, an operational reliability factor S B is determined for the drive or its gear unit from a load collective that is at least three-dimensional.

First claim

What is claimed is:

1. A device for determining an operational reliability factor for a drive provided for a load, the drive including a gear unit and a motor, comprising:
an arrangement configured to determine individual operational reliability factors for a plurality of components of the gear unit based on at least three load variables, to select a minimum value of all of the determined individual operational reliability factors as the determined operational reliability factor for the drive, to at least one of use, determine, output, and display the determined operational reliability factor for the drive, and to manufacture the drive based on the determined operational reliability factor for the drive.

2. The device according to claim 1 , wherein the arrangement is further configured to place orders in accordance with the minimum individual operational reliability factor and to connect to manufacturing facilities in accordance with the minimum individual operational reliability factor.

3. The device according to claim 1 , wherein the load variables include information relating to a time characteristic of torque, speed, axial force, and lateral force.

4. The device according to claim 1 , wherein the load variables include (a) direction and amount of a lateral force and/or (b) a contact point of the lateral force.

5. The device according to claim 1 , wherein the load variables include changes in the load variables as information relating to a time characteristic.

6. The device according to claim 1 , wherein the load variables include partial collectives produced by classification, respective classes including specific value ranges of associated variables.

7. The device according to claim 6 , wherein the arrangement is further configured to determine a number of cycles to failure for each partial collective and for each component from an associated predefined number of cycles, a value for torque and a specific permissible corresponding torque.

8. The device according to claim 1 , wherein the arrangement is further configured to determine a load-critical characteristic curve for each component of at least the gear unit for a specific partial collective, and to determine a permissible torque in accordance with the critical-load characteristic curve and at least one specifiable variable.

9. The device according to claim 8 , wherein the at least one specifiable variable includes at least one of lateral force and axial force.

10. The device according to claim 8 , wherein the critical-load characteristic curve is parameterizable by (a) two parameters in a lateral force/torque diagram and/or (b) four to five parameters in a lateral force/axial force diagram.

11. The device according to claim 1 , wherein the components include (a) shaft sections having different diameters and/or (b) shaft sections having geometric nonuniformities.

12. The device according to claim 1 , wherein the arrangement is further configured to determine a value for permissible corresponding torque from a value for lateral force in accordance with a critical-load characteristic curve in a lateral force/torque diagram.

13. The device according to claim 1 , wherein the arrangement is further configured to determine a value for permissible corresponding torque from a value for axial force in accordance with a critical-load characteristic curve in an axial force/torque diagram.

14. The device according to claim 1 , wherein the arrangement is further configured to determine a value for permissible corresponding torque from a value for axial force and a value for lateral force in accordance with a critical-load characteristic curve in an axial force/lateral force diagram.

15. The device according to claim 1 , wherein arrangement is configured to determine the individual operational reliability factors in accordance with at least one damage-accumulation hypothesis.

16. The device according to claim 1 , wherein the arrangement is configured to determine the individual operational reliability factor

S
Bj

=

1

∑
i

⁢

⁢

n
i

N
i

from respective numbers of cycles to failure and an associated number of changes in load.

17. The device according to claim 1 , wherein the arrangement is configured to determine the individual operational reliability factor

S
Bj

=

1

∑
i

⁢

⁢

n
i

N
i

from respective numbers of cycles to failure and an associated number of changes in load in accordance with a damage-accumulation hypothesis.

18. The device according to claim 1 , wherein the arrangement is further configured to output and/or display a thermal motor loading capacity and/or a gear-unit loading capacity.

19. The device according to claim 1 , wherein the arrangement is further configured to output and/or display a thermal motor loading capacity and/or a gear-unit loading capacity as a thermal limit rating.

Assignees

• Sew Eurodrive Gmbh & Co

Inventors

• Barton Peter
• Schaefer Roman

Classifications

• G01M99/00 Primary

  Subject matter not provided for in other groups of this subclass · CPC title

• G05B19/41875 Primary

  characterised by quality surveillance of production · CPC title

• G05B2219/32187

  Correlation between controlling parameters for influence on quality parameters · CPC title

• Y02P90/22

  Cross-Sectional Technologies · mapped topic

• Y02P90/02

  Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] · CPC title