1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW14597 Steering Wheel Rim Roll Flex Durability Copyright 2012 General Motors Company All Rights Reserved March 2012 Originating Department: North American Engineering Standards Page 1 of 6 1 Scope Note: Nothing in this standard supercedes applicable
2、laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. To evaluate the fatigue durability of the steering wheel structure. 1.2 Foreword. Not applicable. 1.3 Applicability. Steering wheels used in passen
3、ger cars, Multipurpose Passenger Vehicles (MPV), and trucks. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Facilities.
4、Not applicable. 3.2 Equipment. 3.2.1 A 360 degree fatigue test machine, as shown in Appendix A, Figure A1, which is able to: a. Rotate the steering wheel at a rate of 30 2 min-1 (30 2 rpm). b. Apply a load to the steering wheel without sudden impact. c. Apply the loads ranging from 310 10 N to the r
5、im on the steering wheel perpendicular to the axis of rotation. d. Apply the loads to the steering wheel through 150 5 mm diameter by 50 5 mm wide roller. The roller is to be mounted to allow free rotation upon contact with the steering wheel. e. Accommodate steering wheels of various rim diameters
6、and depth sizes. f. Mount the steering wheel to the machine on a simulated steering shaft. g. Count the number of steering wheel rotations. h. Micro switch attached to load arm in order to stop rotations if surpass the 25 mm deflection limit. Note: All instrumentation is to be calibrated as required
7、 record instrumentation details and date of calibration on Data Sheet A1 in Appendix A, unless the information is otherwise preserved in the testing laboratory records. 3.2.2 Test Article. Steering Wheel Assemblies all variants with airbags, if applicable. 3.3 Test Vehicle/Test Piece. Not applicabl
8、e. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14597 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 2 of 6
9、 3.4 Test Time. Not applicable. Calendar time: days Test hours: hours Coordination hours: hours 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Not applicable. 4 Procedure 4.1 Preparation. 4.1.1 Mount the steering wheel assembly to the simulated steering shaft of the fatigue tes
10、t machine using a torque specified by requesting engineer and noted in Data Sheet A2 (see Appendix A). 4.1.2 Align the load applying roller of the test machine with the rim of the steering wheel in such a way that the load is applied parallel to the axis of the steering wheel. 4.1.3 Adjust the test
11、machine weights to deliver 310 10 N at the steering wheel rim. 4.1.4 Adjust micro switch to stop rotation if beyond the 25 mm maximum deflection. 4.2 Conditions. 4.2.1 Environmental Conditions. Not applicable. 4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been a
12、greed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Operate the system at 30 2 min-1 (30 2 rpm). 4.3.2 Check the steering wheel after 15 001 revolutions and record steering wheel condition. 4.3.2.1 Remove foam from spoke to
13、 rim junction to examine structure. 4.3.3. Evaluation. The steering wheel assembly shall complete a minimum of 15 000 cycles, when the applied load is 310 N, with no visible evidence of fatigue separation. 5 Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Results. Not applicable. 5.3 Te
14、st Documentation. Record pertinent test results on the supplied data sheets (see Appendix A). 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the
15、user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Steering Wheel Armature/Frame: The metal support structure of a steering wheel. Steering Wheel Molding Assembly: The primary molded
16、 component of the steering wheel. Steering Wheel Assembly Variants: The complete steering wheel with different rim trims or levels (polyurethane, leather, sport, or premium). 7.2 Acronyms, Abbreviations, and Symbols. MPV Multipurpose Passenger Vehicles Copyright General Motors Company Provided by IH
17、S under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14597 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 3 of 6 8 Coding System This standard shall be referenced
18、 in other documents, drawings, etc., as follows: Test to GMW14597 9 Release and Revisions This standard was originated in October 2005. It was first approved by the Steering Wheel Global Subsystem Leadership Team in March 2006. It was first published in March 2006. Issue Publication Date Description
19、 (Organization) 1 MAR 2006 Initial publication. 2 MAR 2012 5 year refresh and added deflection limit microswitch, and eliminated 8500 cycle intermediate inspection. (Interiors) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or
20、networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14597 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 4 of 6 Appendix A Figure A1: 360 Degree Fatigue Test Machine Copyright General Motors Company Provided by IHS under license with Gen
21、eral Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14597 Copyright 2012 General Motors Company All Rights Reserved March 2012 Page 5 of 6 Data Sheet A1: Instrument Calibration Report Number: _ Submit this data s
22、heet with the other data sheets when the information is not otherwise preserved in the testing laboratory records. Test Procedure Number: GMW14597 Test Date: _ Instrument Description Instrument Number Calibration Date Next Calibration Due Date 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Recor
23、ded by: Date (Signature) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14597 Copyright 2012 General Motors Company All Rights Reserved
24、March 2012 Page 6 of 6 Data Sheet A2: Steering Wheel Rim Roll Flex Durability Test/Report Number: Report Date: Part Data Vehicle Make Model Year Part Description Steering Wheel Assembly Number Fastener Torque N m Prototype Production Test Data 4.3.2 Wheel Condition Revolutions Condition 15 001 Recorded by Date (Signature) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
