1、 GMDAT ENGINEERING STANDARDS Test Procedures Powertrain Integration LIMITED USE EDS-T-2233 Deformation Test of Rear Axle Transmissions Do Not Use on New Program; No Replacement. Deformation Test of Rear Axle Transmissions Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2
2、010 General Motors Company All Rights Reserved November 2010 Originating Department: GMDAT Engineering Standards Page 1 of 7 Version : 3 1 Introduction Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict between the Korean and English language, t
3、he Korean language shall take precedence. 1.1 Purpose. Determination of the dynamic deformation of rear axle transmissions. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None. 2.2 GM Standards/Specifications. B
4、 040 0885 3 Equipment 3.1 Rigging Test Stand I for Rear Axles. 3.2 16 Dial Gages (1/100 Graduation). 3.3 Frame and Brackets to Attach the Dial Gages. 4 Preparation 4.1 Provide the rear axle housing with 8 mm bores (see page 5) at points 1, 3, 4, 6, 8, 9 and 11. 4.2 Glue a spindle point into the cent
5、er bore of the drive pinion for measuring points 3 and 8. 4.3 Assemble a prepared rear axle housing with the respective experimental gears according to drawing specification (with maximum values for bearing pretension). 4.4 An auxiliary rear axle must be prepared for the rear axle rigging test stand
6、 I. 4.5 Mount the test axle on the test stand as installed in the vehicle. 4.6 Attach frame and brackets to the test axle. 4.7 Attach the dial gages required for the test to the rear axle according to the drawing on page 5 and make a calibration. 5 Performance 5.1 For the test, the drive pinion is t
7、o be accelerated to approx. 70 min-1. 5.2 The output torque is a) Mdoutput = max. Mdengine i1st gear irear axle or, b) Mdoutput = AWR dyn. tire rolling radius Note: Md to a) applies when it is lower than Md to b); otherwise Md to b) is the applicable drive torque for the test. GMDAT ENGINEERING STAN
8、DARDS EDS-T-2233 Copyright 2010 General Motors Company All Rights Reserved November 2010 Page 2 of 7 Version : 3 5.3 The following loading schedule is run. 5.3.1 Load applied to the drive side (forward). y 25 % Mdoutput positive. y 50 % Mdoutput positive. y 75 % Mdoutput positive. y 100 % Mdoutput p
9、ositive. 5.3.2 Load applied to the coast side (forward). y 25 % Mdoutput negative. y 50 % Mdoutput negative. y 75 % Mdoutput negative. y 100 % Mdoutput negative. 5.4 The teeth of the ring gear are to be lubricated with marking paste B 040 0885 before the test. 5.5 The dial gages must be set to zero
10、when turning the ring gear in driving direction (at no load). The concentricity error of rotating parts is considered by the maximum positive value (clockwise) during a 360rotation of the ring gear when setting the dial gages. 5.6 The maximum indicated values will be recorded on the data sheet on pa
11、ge 6. 6 Bogy 6.1 Only one rear axle will be used for the test. 6.2 The amount of deformation at the single measuring points shall be smaller or not considerably larger than the values of released rear axles. 7 Evaluation 7.1 The values indicated on the dial gages are evaluated and recorded on sheet
12、7 for the calculation of the deformation values: 7.1.1 Drive pinion movement relative to the housing 7.1.2 Ring gear movement relative to the housing vertical (-1) - (-2), horizontal (7) - (6), longitudinal (11) - (12) 7.1.3 Drive pinion movement relative to the ring gear 8 Notes 8.1 Glossary. Not a
13、pplicable. 8.2 Acronyms, Abbreviations, and Symbols. Not applicable. 2(9)(8)(10)horizontal,2(4)(3)vertical(5 2(16)(15)214)(13)(allongitudin 2(9)(8)(-6)horizontal,2(4)(3)1)vertical(- 214)(13)(al(11)longitudin GMDAT ENGINEERING STANDARDS EDS-T-2233 Copyright 2010 General Motors Company All Rights Rese
14、rved November 2010 Page 3 of 7 Version : 3 9 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: EDS-T-2233 10 Release and Revisions This standard was originated in July 1996. It was first approved by GMDAT Engineering Standards in July 1996. It was first
15、published in July 1996. Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 NOV 2010 Limited use with no replacement (Chassis Subsystem Validation Team) / F9I957 ($4=E:4 68 ) =* (24 .E D4D4 ) GMDAT ENGINEERING STANDARDS EDS-T-2233 Copyright 2010 General Motors Co
16、mpany All Rights Reserved November 2010 Page 4 of 7 Version : 3 Rigging Test Stand 1 for Rear Axles 1. Variable D. C. motor and gear box 2. Gear rig 3. Test axle 4. Auxiliary axle 5. Side gear box 6. Tachometer 7. Propshafts GMDAT ENGINEERING STANDARDS EDS-T-2233 Copyright 2010 General Motors Compan
17、y All Rights Reserved November 2010 Page 5 of 7 Version : 3 GMDAT ENGINEERING STANDARDS EDS-T-2233 Copyright 2010 General Motors Company All Rights Reserved November 2010 Originating Department: GMDAT Engineering Standards Page 6 of 7 Version : 3 Deformation in 1/100 mm of a gear axle type Dial gage
18、 Torque (Nm) on the ring gears Friction torque Mdmax. Mdmax. Mdmax. Mdmax. Friction torque Forward Reverse Forward Reverse Forward Reverse Forward Reverse Forward Reverse Forward Reverse 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Part no. Ratio Prior to test ! After the test ( ) Corrected with friction
19、moment Bearings : Test no. Sheet no. Date Observer Pinion Pretension Nm (After the test) Nm) Differential Pretension mm GMDAT ENGINEERING STANDARDS EDS-T-2233 Copyright 2010 General Motors Company All Rights Reserved November 2010 Originating Department: GMDAT Engineering Standards Page 7 of 7 Version : 3
