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QC/T 717-2015 PDF English (QC/T 717-2004: Older version)Search result: QC/T 717-2015 (QC/T 717-2004 Older version)
QC/T717-2015 (QCT717-2015): PDF in EnglishQC/T 717-2015 AUTOMOBILE INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040.50 T 22 Replacing QC/T 717-2004 Road vehicles - Wheels - Requirements and measuring methods of radial and lateral run-out ISSUED ON: APRIL 30, 2015 IMPLEMENTED ON: OCTOBER 01, 2015 Issued by: Ministry of Industry and Information Technology of PRC Annex: Numbers, standard names and initial implementation dates of 17 automotive industry standards S/N Standard number Standard name Standard number being substituted Initial implementation date (YYYY-MM-DD) 287 QC/T 991-2015 Passenger cars - Light alloy wheels - 90° impact test procedure 2015-10-01 288 QC/T 717-2015 Road vehicle – Wheels - Requirements and Measuring methods of radial and lateral run- out QC/T 717-2004 ISO 16833:2006, MOD 2015-10-01 289 QC/T 52-2015 Refuse collection vehicle QC/T 52-2000 2015-10-01 290 QC/T 652-2015 Suction-type sewer scavenger QC/T 652-2000 2015-10-01 291 QC/T 992-2015 Municipal emergency service vehicle 2015-10-01 292 QC/T 993-2015 Explosive transport vehicle 2015-10-01 293 QC/T 994-2015 Demountable tanker carrier 2015-10-01 294 QC/T 995-2015 Hydrostatic drive modular transporter 2015-10-01 295 QC/T 764-2015 Road vehicles - Hydraulic braking system - Simple flare pipes, tube tapped holes male fittings and hose end fittings QC/T 764-2006 2015-10-01 296 QC/T 239-2015 Specifications and bench test methods for commercial vehicle service brake QC/T 239-1997 QC/T 479-1999 2015-10-01 297 QC/T 996-2015 Specifications and bench test methods of automobile air dryer 2015-10-01 298 QC/T 997-2015 Passenger car full load overall frame body structure requirements 2015-10-01 299 QC/T 998-2015 The Technical Specification of 2015-10-01 Table of Contents Announcement ... 2 Foreword ... 7 1 Scope ... 9 2 Normative references ... 9 3 Terms and definitions ... 9 4 Principles of measurement ... 11 5 Calculation methods of runout ... 13 6 Requirements for peak-to-peak value of runout ... 16 Appendix A (Informative) Testing methods of radial and lateral runout of wheel ... 17 Foreword This standard was drafted in accordance with the rules given in GB/T 1.1-2009 “Directives for standardization - Part 1: Structure and drafting of standards”. This standard replaces QC/T 717-2004 “Run out requirements and measuring methods of automotive wheels”. As compared with QC/T 717-2004, in addition to editorial changes, the main technical differences of this standard are as follows: - CHANGE the standard name into “Road vehicles - Wheels - Requirements and measuring methods of radial and lateral run-out”; - MODIFY the requirements for the peak-to-peak value of the runout of vehicle’s wheel (see clause 3 of the 2004 version; clause 6 of this version); - ADD definitions of terms such as radial runout, lateral runout, uniformity, first harmonic, and so on (see clause 3 of this version); - ADD the principles of measurement (see clause 4 of this version); - ADD the calculation method for runout (see clause 5 of this version); - MODIFY the system’s error requirements of the measuring equipment in the testing method (see clause 4 of the 2004 version; Appendix A of this version); - MODIFY the datum of measurement in the testing method (see clause 4 of the 2004 version; Appendix A of this version); - DELETE the measurement method for the 15°DC wheels in the testing method (see clause 4 of the 2004 version; Appendix A of this version); - MODIFY the Figure A.1, Figure A.2, Figure A.3, Figure A.4 of the testing method; CHANGE the datum of measurement to the wheel’s mounting surface (see clause 4 of the 2004 version; Appendix A of this version); - DELETE the requirement for first harmonics in Appendix A (see Appendix A of the 2004 version). This standard uses the redrafting method to modify and adopt ISO 16833:2006 “Road vehicles - Wheels - Requirements and measuring methods of radial and lateral run-out”. The technical differences between this standard and ISO 16833:2006 are as follows: Road vehicles - Wheels - Requirements and measuring methods of radial and lateral run-out 1 Scope This standard defines parameters that characterize the geometric uniformity of the wheel and describes the principles of measurement of these parameters. This standard specifies the requirements for the peak-to-peak value of the radial runout, the peak-to-peak value of the lateral runout, the first harmonic of the average of radial runout, the first harmonic of the average of lateral runout of the vehicle wheel. This standard applies to road vehicle’s wheels of 5°DC, 5°SDC, 5°FB, 15°DC. 2 Normative references The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard. GB/T 2933 Wheels and rims for pneumatic tires - Vocabulary, designation and marking (GB/T 2933-2009, ISO 3911:2004, IDT) GB/T 3487 Rim contours for motor vehicles (GB/T 3487-2005, ISO 4000- 2:2001, ISO 4209-2:2001, MOD) GB/T 18506 Uniformity test method for motor vehicle tires (GB/T 18506- 2001, ISO 13326:1998, MOD) 3 Terms and definitions 3.1 Radial run-out (RRO) Over one revolution of the wheel, the amount of change of the distance X of the rim bead’ seat as relative to the rotation axis of the wheel, in millimeters (mm), as shown in Figure 1(a). rim flange as relative to a fixed reference plane perpendicular to the wheel’s rotation axis Figure 1 -- Radial runout and lateral runout 3.5 First harmonic The peak-to-peak value of the fundamental wave of Fourier series. Note: The frequency of the first harmonic is equal to the frequency of rotation. 3.6 Second (and higher order) harmonic The peak-to-peak value of the second (or higher order) waveform of the Fourier series. 4 Principles of measurement 4.1 Datum 4.1.1 Rotation of axis of center-hole-piloted wheel For the center-hole-piloted wheel, the rotation axis is the center hole’s axis, which is determined by the axis of the largest inscribed circle and the plane of the wheel. 4.1.2 Wheel mounting plane The wheel mounting plane is the plane P (see Figure 2) that supports the hub’s surface on the wheel plane (the bearing surface of the wheel on the vehicle hub). 4.1.3 Rotation axis of nut-seat-piloted wheel For the nut-seat-piloted wheel, the rotation axis is the pitch circle’s axis, which is determined by the embedded nut seat (see Figure 2). 4.2 Determination of measured values For each rim bead’s seat, during (one) revolution of the wheel, use a ball which has a radius of R to be against the rim flange and in constant contact with the bead’s seat. Through measuring these contact points, determine the measured values. Unless otherwise stated on the drawing, the radius R of the ball shall be 8 ± 0.2 mm. Appendix A (Informative) Testing methods of radial and lateral runout of wheel A.1 Testing equipment The testing equipment shall have a rotating part equivalent to the positioning of actual installation of the wheel and a measuring device which facilitate the runout testing. Equipment’s accuracy meets the following requirements: a) The system error of the rotating joint component shall meet the requirements: the radial and lateral runout is less than 0.05 mm. b) The measuring device is a dial indicator or sensor which has an accuracy of less than 0.02 mm. A.2 Datum of measurement A.2.1 Center-hole-piloted wheel: The datum of measurement is the wheel’s mounting plane and the center hole. A.2.2 Bolt-hole-piloted wheel: The datum of measurement is the wheel’s mounting plane and the nut seat. A.3 Location of measurement Principles for selecting the location of measurement: Measure the radial runout on a straight-line segment at the width of the bead’s seat. Measure the lateral runout on a straight-line segment at the height of the rim flange. If there is no straight-line segment, follow the requirements below to select the measuring points: a) For the 5°DC wheel, at about 10 mm from the bead’s seat, measure the radial runout; at about 7 mm from the rim flange, measure the lateral runout, as shown in Figure A.1. b) For the 5°SDC wheel, at about 10 mm from the bead’s seat, measure the radial runout; at about 10 mm from the rim flange, measure the lateral runout, as shown in Figure A.2. c) For the 5°FB-I wheel, at about 12 mm from the bead’s seat, measure the radial runout; at about 10 mm from the rim flange, measure the lateral runout, as shown in Figure A.3. d) For the 5°FB-II wheel, at about 12 mm from the bead’s seat, measure the .......Source: https://www.ChineseStandard.net/PDF.aspx/QCT717-2015 |