1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 1999 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.
3、A.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8510 FAX: (724) 776-0243TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS: http:/www.sae.org400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACE RECOMMENDED PRACTICEARP5323Issued 1999-09Balancing Machines - Description a
4、nd EvaluationVertical, Single-Plane, Hard-Bearing Typefor Gas Turbine RotorsTABLE OF CONTENTS1. SCOPE .22. REFERENCES .33. GENERAL PERFORMANCE REQUIREMENTS44. DIMENSIONS AND CAPACITIES 55. VERIFICATION TESTS 8APPENDIX A ROTOR ENVELOPE ABOVE SPINDLE FLANGE IN ENCLOSURE/SPINDLE FLANGE DIMENSIONS .15AP
5、PENDIX B DETAILS FOR CONTRACTUAL NEGOTIATIONS.19APPENDIX C PROVING ROTORS .20APPENDIX D TEST SHEETS FOR emarTEST.21APPENDIX E TEST SHEETS FOR URR TEST25APPENDIX F TEST SHEET FOR COUPLE UNBALANCE INFLUENCE TEST.28APPENDIX G TEST SHEET FOR COMPENSATOR TEST 29Copyright SAE International Provided by IHS
6、 under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP5323 - 2 -1. SCOPE:1.1 Characteristics of vertical hard-bearing balancing machines are described which make such machines suitable for gas turbine rotor balancing.1.2 This document specifie
7、s:a. General dimensions and capacitiesb. Performance requirementsc. Balancing speed rangesd. Drive power requirementse. Balancing machine spindle flange dimensionsf. Test procedures1.3 Proving rotors and associated test masses required for the performance tests are described in ARP4162.1.4 Test proc
8、edures are described in detail and test log samples along with a polar diagram for evaluating the test results are furnished.1.5 The document ARP588 for vertical, single-plane, soft-bearing balancing machines, the document ARP4050 for vertical, two-plane, hard-bearing balancing machines, ISO 2953, a
9、nd the available technology of hard-bearing balancing machines have been considered in the preparation of this document.1.6 This document was developed for hard-bearing balancing machines but may also be used for existing soft-bearing balancing machines.1.7 Purpose:The purpose of this document is to
10、 delineate the technical specifications for vertical, rotating type, hard-bearing balancing machines for measuring the amount and angle of unbalance corrections required in a single plane to balance gas turbine rotors (for Glossary of Terms and Nomenclature, see ISO 1925).Hard-bearing machines have
11、been used for gas turbine rotor balancing for several years. They have largely replaced soft-bearing machines. Hard-bearing machines provide permanent calibration (see ISO 1925) with first-run readout, simpler operation, easy adaptation to computerization, and eliminate support locking requirements
12、and windage fluctuations.This document also delineates performance tests to ensure compliance with the document.This document was prepared to give a general description of balancing equipment capable of balancing gas turbine rotors either now in service or to be put into service in the foreseeable f
13、uture. Standardization of balancing machine to rotor interfaces is intended to enable a set of tooling for a particular component to be used on a variety of machines in one capacity range.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking pe
14、rmitted without license from IHS-,-SAE ARP5323 - 3 -1.7 (Continued):This document may also be used as a general specification for purchasers in procuring suitable vertical single-plane balancing machines.The performance and test requirements may be used for periodic tests and/or after repairs that m
15、ay have affected the balancing machines performance. The test procedure shall be the same as described in this document.The performance and test requirements have been written in terms of “emar“ (minimum achievable residual specific unbalance), and A-units rather than fixed physical values, such as
16、grams, millimeters, ounces, or inches (see ISO 1925).2. APPLICABLE DOCUMENTS:The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date o
17、f the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.2.1 SAE Publications:A
18、vailable from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.ARP588 Balancing Machines - Description and Evaluation, Vertical, Single-Plane, Soft-Bearing Type for Gas Turbine RotorsARP1382 Design Criteria for Balancing Machine ToolingARP4048 Balancing Machines - Description and Evaluation, H
19、orizontal, Two-Plane, Hard-Bearing Type for Gas Turbine RotorsARP4050 Balancing Machines - Description and Evaluation, Vertical, Two-Plane, Hard-Bearing Type for Gas Turbine RotorsARP4162 Balancing Machine Proving Rotors2.2 ANSI Publications:Available from ANSI, 11 West 42nd Street, New York, NY 100
20、36-8002.ISO 1925 - 1990 Balancing VocabularyISO/DIS 2953 - 1997 Balancing Machines - Description and EvaluationISO 7475 - 1984 Balancing Machines - Enclosures and other Safety MeasuresCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permit
21、ted without license from IHS-,-SAE ARP5323 - 4 -2.3 U.S. Government Publications:Available from DODSSP, Subscription Services Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.Report No. 371-V-24; Department of the Navy, Bureau of Ships Code 371MIL-STD-167; Mechanical Vibrations of
22、Shipboard Equipment, Department of the Navy, Bureau of Ships.3. GENERAL PERFORMANCE REQUIREMENTS:3.1 The balancing machine shall indicate the amount and angle of the resultant (static) unbalance in one selected plane in the rotor.3.2 Couple Unbalance Interference:The balancing machine shall sufficie
23、ntly suppress the effects of the couple unbalance from the resultant (static) unbalance indication. Requirements are outlined in 5.10.3.3 Unbalance Indication:3.3.1 Analog devices indicating amount of unbalance shall have at least 0.125 in (3 mm) pointer movement for measurement of 1 A-unit over a r
24、ange of 20 A-units.3.3.2 Digital devices indicating amount of unbalance shall have a resolution of at least 10% of 1 A-unit.3.3.3 The angle resolution shall be at least 1.3.3.4 The amount and angle indication shall be simultaneous.3.3.5 The amount and angle readout shall be provided on the first spi
25、n up of the rotor.3.3.6 The radius setting shall be selectable, with a minimum of 1 in or, alternatively, of 10 mm.3.3.7 Amount indication shall be available in metric and/or English units (grams, ounces, and fractions thereof).3.3.8 Unbalance indication shall be available for clockwise and counterc
26、lockwise direction of rotation.3.4 Balancing Machine Construction:3.4.1 The machine must be constructed for floor mounting.3.4.2 The appropriate size of shroud must be provided and interlocked for operator safety. The shroud shall be designed to meet or exceed ISO 7475 Class C requirements.Copyright
27、 SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP5323 - 5 -3.4.3 The machine must be equipped with the appropriate spindle mounting flange as specified in Appendix A.3.5 Drive For Workpiece:3.5.1 The driv
28、e system shall include all components necessary to drive the proving rotor.3.5.2 The drive system shall be functional in both directions of rotation.3.6 Speed of Rotation During Balancing:The machine shall be capable of operating at variable speeds within the range shown in Table 1, 4.5.2.3.7 Drive
29、Motor and Controls:The machine shall be capable, within the agreed upon time period, of making six consecutive starts and stops to the balancing speed of the rotor requiring the most drive power.4. DIMENSIONS AND CAPACITIES:Table 1 lists the required dimensions and capacities for each machine size a
30、nd associated proving rotor.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP5323 - 6 -TABLE 1CharacteristicDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapac
31、itiesDimensionsandCapacitiesDimensionsandCapacities4.1 Machine Class 25 50 100 250 500 10004.2 Load Capacity (lb)4.2.1 Maximuma25 50 100 250 500 10004.2.2 Minimumb1 2 4 10 20 504.2.3 Maximum Wh2n2 c(lbft2x rpm2x 106)(kgm2x rpm2x 106)200.8321.4452.01406.032514400174.3 Rotor Dimensions (in)4.3.1 Maxim
32、um Diameter 16 24 39 57 70 824.3.2 Maximum Heightat Maximum Diameter10 10 10 20 20 244.3.3 Rotor Envelope SeeAppendix ASeeAppendix ASeeAppendix ASeeAppendix ASeeAppendix ASeeAppendix A4.3.4 Spindle Flange(Figure)A2 A3 A3 A3 A3 A4Copyright SAE International Provided by IHS under license with SAENot f
33、or ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP5323 - 7 -Machine Class 25 50 100 250 500 10004.4 UnbalanceMeasurement(microinch)4.4.1 Required emar(equal to 1 A-unit)30 30 30 50 50 504.4.2 Required URR 95% 95% 95% 95% 95% 95%4.5 Drive andBalancing Speeds4.5.1 Driv
34、e Power (hp) d125.07.510154.5.2 Balancing SpeedRange (rpm)900200075015006001200600110060011004009004.5.3 Test Speed Range(rpm)1200190090013008001100800100080010006009004.6 Proving Rotors(see ARP4162 fordetails)4.6.1 Mass (lb) 8 25 25 80 250 2504.6.2 Interface Diameter(in)2.0 4.5 4.5 4.5 4.5 4.5TABLE
35、 1 (Continued)CharacteristicDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without licens
36、e from IHS-,-SAE ARP5323 - 8 -aTotal mass (rotor and tooling), mounted to machine spindle.bApproximate guideline. Minimum rotor limits are generally governed by the spindle flange dimensions and the required emar.cThe maximum Wh2n2value, specified by the machine manufacturer, should have the stated
37、capacity as a minimum requirement.W = Rotor + tooling mass, expressed in pounds (kilograms).h = h1+ h2, where h1is the height from the spindle flange to the rotor + tooling mass center, expressed in feet (meters), and h2is an assumed machine constant of 0.33 ft (0.1 m).n = Balancing speed (test spee
38、d) in rpm.If the balancing speed is given in units of 1/min, the units of the equation are lbft2/min2(kgm2/min2).dApproximate guideline. The user should specify to the supplier the horsepower requirements at specific balancing speeds.TABLE 1 (Continued)CharacteristicDimensionsandCapacitiesDimensions
39、andCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesDimensionsandCapacitiesCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP5323 - 9 -5. VERIFICATION TESTS:5.1 Requi
40、rements for Tests:To verify the claimed performance of a balancing machine, separate tests are required. The first test is for minimum achievable residual specific unbalance (emartest), the second is the test for unbalance reduction ratio (URR test), and the third is the test for couple unbalance su
41、ppression. The first two tests represent a minimum test procedure designed to establish essential compliance with the requirements for minimum achievable residual unbalance, and for combined accuracy of amount of unbalance indication and angle indication. The third test establishes compliance with t
42、he requirement that the balancing machine shall sufficiently suppress the effects of the couple unbalance from the resultant (static) unbalance indication. The test procedure will not prove compliance with all requirements over the full range of variables nor will it define the exact reason in case
43、the machine fails to comply.If the machine is equipped with a compensator, its performance shall be tested.Equipment parameters, including physical inspection of various dimensions, features, instrumentation, tooling and accessories, shall be verified.5.2 Duties of Supplier and User1:5.2.1 For these
44、 tests, the user shall provide an examiner trained in the use of balancing machines.5.2.2 The examiner shall record the unbalance indication off the machines instrumentation, log the values, and subsequently plot them. The supplier shall be entitled to check the accuracy of the examiners work.5.2.3
45、The supplier as well as the examiner shall be allowed to verify the condition of the proving rotor, the correctness of the test masses, and the location of the test masses.5.3 Requirement for Machine Spindle Mounting Flange:The female location pilot of the drive spindle flange shall have a radial ru
46、nout not to exceed 0.0005 in FIR. The axial runout of the locating surface shall not exceed 0.0005 in FIR (0.001 in for class 1000 flange). Each reading should be taken using 5 complete revolutions of the spindle and be taken with a low friction dial indicator with a resolution of 0.0001 in/division
47、.1. The supplier is understood to be the balancing machine manufacturer and/or supplier. The user is understood to be the prospective or actual user of the machine.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license
48、from IHS-,-SAE ARP5323 - 10 -5.4 Requirement for Proving Rotor:The machine shall undergo the following tests with the appropriate proving rotor described in ARP4162. The correction planes on the rotor are designated:Plane 1: Lower PlanePlane 2: Upper PlanePlane 3: Center Plane5.5 Requirement for Wei
49、ghing Scale:A weighing scale shall be available having sufficient accuracy to verify the correctness of the test masses.5.6 Test and Rechecks:When a machine fails either the emar, the URR test, or the couple unbalance interference test, the manufacturer shall be permitted to adjust the machine, after which a complete retest shall be made and the machine shall then pass. If it does not,
