CONTROLLED CRIMPING METHOD AND SYSTEM

• US 20130160284A1
• Filed: 12/03/2012
• Published: 06/27/2013
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: GATZ, Michael Carl, Burke, Brett Edward
• Granted Patent: US 9,216,449 B2
• Time in Patent Office: Days
• US Class Current: 29/715
• CPC Class Codes: B21D 39/00 Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating joining mitred profiles B21D53/745; riveting B21J; uniting components by forging or pressing to form integral members B21K25/00; welding B23K; press-fitting, force-fitting, or shrinking in general B23P11/00, B21D19/00; by adhesives F16B11/00 ; Connections as such F16L, F16B; Tube expanders
• CPC Class Codes: B21D 39/046 Connecting tubes to tube-like fittings
• CPC Class Codes: B21D 39/048 using presses for radially crimping tubular elements
• CPC Class Codes: Y10T 29/53065 with means to fasten by deformation

Abstract

A system for crimping a first component onto a second component includes a first portion and a second portion facing the first portion. The system also includes at least one actuator configured to move the first portion relative to the second portion to compress a die disposed between the first portion and the second portion. The compression of the die causes the first and second components located in the die to be crimped together. The system also includes a controller connected to the at least one actuator. The controller is configured to determine a value associated with an amount of deflection of the first portion while crimping and determine whether to stop the movement of the first portion based on the determined value.

Claims

1. A system for crimping a first component onto a second component, the system comprising:

a first portion;

a second portion facing the first portion;

at least one actuator configured to move the first portion relative to the second portion to compress a die disposed between the first portion and the second portion, the compression of the die causing the first and second components located in the die to be crimped together; and

a controller connected to the at least one actuator and configured to;

determine a value associated with an amount of deflection of the first portion while crimping, and

determine whether to stop the movement of the first portion based on the determined value.

2. The system of claim 1, wherein the amount of deflection is a distance between a first location on an inner surface of the first portion towards an edge of the first portion and a second location on the inner surface of the first portion towards a center of the first portion along a direction of movement of the first portion.

3. The system of claim 1, further comprising:

a measuring device configured to monitor a pressure or force associated with the at least one actuator;

wherein the controller is communicatively connected to the measuring device and further configured to determine the value associated with the amount of deflection of the first portion based on the measured pressure or force.

4. The system of claim 3, wherein the controller is configured to determine the value associated with the amount of deflection of the first portion further based on stored data correlating the pressure or force and the amount of deflection.

5. The system of claim 4, wherein the controller is configured to determine the value associated with the amount of deflection of the first portion further based on a graph or equation determined based on the stored data.

6. The system of claim 1, wherein the at least one actuator includes at least one hydraulic cylinder, the at least one hydraulic cylinder including a piston connected to the first portion to affect movement of the first portion.

7. The system of claim 6, further comprising:

a pressure measuring device configured to monitor a pressure of a hydraulic fluid supplied to the at least one hydraulic cylinder while crimping;

wherein the controller is communicatively connected to the pressure measuring device and further configured to determine the value associated with the amount of deflection of the first portion based on the measured pressure.

8. The system of claim 1, wherein the controller is configured to determine whether to stop the movement of the first portion by:

calculating a crimp dimension based on the determined value; and

determining whether a difference between the calculated crimp dimension and a desired crimp dimension is below a tolerance.

9. The system of claim 8, further comprising:

a distance measuring device configured to monitor a distance between the first and second portions;

wherein the controller is communicatively connected to the distance measuring device and is further configured to calculate the crimp dimension based on the monitored distance.

10. The system of claim 1, wherein the controller is configured to periodically determine the value associated with the amount of deflection and periodically determine whether to stop the movement of the second portion based on the determined value.

11. The system of claim 1, wherein the first and second portions are plates, the first component is a coupling, and the second component is a hose.

12. The system of claim 1, further comprising:

at least one input device configured to read first identification information provided on the first component, second identification information provided on the second component, and third identification information provided on the die;

wherein the controller is configured to;

receive the first identification information, the second identification information, and the third identification information from the at least one input device, and

determine whether a combination of the first component, the second component, and the die is valid based on the first identification information, the second identification information, and the third identification information.

13. The system of claim 12, wherein the controller is further configured to compare a combination of the first identification information, the second identification information, and the third identification information to stored combinations to determine whether the combination of the first component, the second component, and the die is valid.

14. The system of claim 12, wherein:

the first identification information, the second identification information, and the third identification information are provided in bar codes, RFID tags, or data matrix codes; and

the at least one input device includes a bar code, RFID, or data matrix code reader.

15. The system of claim 1, wherein the first component and the second component form a crimped assembly, and the system further includes:

at least one input device communicatively connected to the controller, the at least one input device being configured to read information provided on a previously-assembled crimped assembly, the controller being further configured to determine identification information for the first component, the second component, and the die based on the information provided on the previously-assembled crimped assembly; and

a display connected to the controller and configured to display to an operator the identification information for the first component, the second component, and the die.

16. A system for crimping a first component onto a second component, the system comprising:

a first plate;

a second plate facing the first plate;

at least one actuator configured to move the first plate relative to the second plate to compress a die disposed between the first plate and the second plate, the compression of the die causing the first and second components located in the die to be crimped together; and

a controller connected to the at least one actuator and configured to;

determine an amount of deflection of the first plate while crimping, and

determine a crimp dimension based on the determined amount of deflection.

17. The system of claim 16, wherein:

the die is tapered and is disposed in a conical-shaped die holder in the second plate; and

the die includes a plurality of radial segments.

18. A method for validating a combination of a coupling, a hose, and a die using a controller, before crimping the coupling onto the hose using the die to form a crimped assembly, the method comprising:

reading first identification information provided on the coupling, second identification information provided on the hose, and third identification information provided on the die using at least one input device;

communicating the first identification information, the second identification information, and the third identification information from the at least one input device to a controller, and

determining, using the controller, whether a combination of the coupling, the hose, and the die is valid by comparing a combination of the first identification information, the second identification information, and the third identification information to combinations stored in a memory associated with the controller.

19. The method of claim 18, further comprising:

reading information provided on a previously-assembled crimped assembly using the at least one input device; and

displaying to an operator information for the coupling, the hose, and the die based on the information provided on the previously-assembled crimped assembly to allow the operator to retrieve the coupling, the hose, and the die to recreate the previously-assembled crimped assembly.

20. The method of claim 18, wherein reading the first identification information, the second identification information, and the third identification information includes:

using the at least one input device including a bar code, RFID, or data matrix code reader to read bar codes, RFID tags, or data matrix codes including the first identification information, the second identification information, and the third identification information.