ASME B5.54-2005 pdf download.Methods for Performance Evaluation of Computer Numerically Controlled Machining Centers.
1.1 GENERAL This Standard establishes methodology for specifying and testing the performance of CNC machining centers. Inadditionto clarifyingthe performance evaluation, this Standard facilitates performance comparisons between machines by unifying terminology, general machine classification, and the treatment of environmental effects. It provides a series of tests that should be used to perform acceptance testing (runoff) ofnew and recon- ditioned machines and could beused to verifycontinued capability of production machines, already in operation, through periodic testing. The set of acceptance tests and the specification limits for machine conformance shall be the subjectofcontractual agreementbetween the Sup- plier and the User. This Standard is rather comprehen- sive; therefore, for smaller and less expensive machines the conformance to specifications could be based on a recommended subset of tests to evaluate machine per- formance. 1.2 PERFORMANCE FORMS Any performance forms described, as complying with this Standard, shall include at least those items specified in Forms 1.1 through 1.6. Other forms shall be included, depending on the acceptance tests agreed between the Supplier and the User. The form for machining test parts is included in Chapter 8 as Form 8.1.
The following is a list of publications referenced in this Standard. ASME B5.57-1998, Methods for Performance Evaluation of Computer Numerically Controlled Lathes and Turning Centers ASME B89.3.4M-1985 (R1992), Axes of Rotation ASME B89.4.1-1997, Methods for Performance Evalua- tion of Coordinate Measuring Machines ASME B89.6.2-1973 (R1995), Temperature and Humidity Environment for Dimensional Measurement Publisher: The American Society of Mechanical Engi- neers (ASME International), Three Park Avenue, New York, NY 10016; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007 EIA-267-C-1990, Axis and Motion Nomenclature for Numerically Controlled Machines Publisher: Electronic Industries Alliance (EIA), 2500 Wil- son Boulevard, Arlington, VA 22201 IEC 60212:1971, Standard Conditions for Use Prior to and During the Testing of Solid Electrical Insulating Materials Publisher: International Electrotechnical Commission (IEC), 3 rue de Varembe´, Case Postale 131, CH-1211, Gene`ve 20, Switzerland/Suisse IEEE 1159-1995, Recommended Practice on Monitoring Electrical Power Quality Publisher: Institute of Electrical and Electronics Engi- neers (IEEE), 445 Hoes Lane, Piscataway, NJ 08854
IEST-RP-CC024.1, Measuring and Reporting Vibration in Microelectronics Facilities Publisher: Institute of Environmental Sciences and Tech- nology(IEST),5005 NewportDrive,RollingMeadows, IL 60008 ISO Guide to the Expression of Uncertainty in Measure- ment, 1993 ISO 1:2002, Standard Reference Temperature for Geo- metrical Product Specification and Verification ISO 230-2:1997, Test Code for Machine Tools — Part 2: Determination of Accuracy and Repeatability of Positioning Numerically Controlled Axes ISO 230-3:2001, Test Code for Machine Tools — Part 3: Determination of Thermal Effects ISO 230-4:1996, Test Code for Machine Tools — Part 4: Circular Tests for Numerically Controlled Machine Tools ISO 554:1976, Standard Atmospheres for Conditioning and/or Testing Specifications ISO 841:2001, Industrial Automation Systems and Inte- gration — Numerical Control of Machines — Coordi- nate System and Motion Nomenclature ISO 3205:1976, Preferred Test Temperatures ISO 10791-7:1998, Test Conditions for Machining Cen- ters — Part 7: Accuracy of a Finished Test Piece ISO VIM 1993, International Vocabulary of Basic and General Terms in Metrology Publisher: International Organization for Standardiza- tion (ISO), 1 rue de Varembe´, Case Postale 56, CH- 1211, Gene`ve 20, Switzerland/Suisse NAS 938, Machine Axis and Motion Nomenclature NAS 979, Uniform Cutting Tests Publisher: Aerospace Industries Association (AIA), 1000 Wilson Boulevard, Arlington, VA 22209
4.1 GLOSSARY Abbe error: measurement error resulting from angular motion of a movable component and an Abbe offset. Abbe offset: instantaneous value of the perpendicular dis- tance between the line where the displacement is mea- sured and the line where the displacement is to be determined. Abbe principle: displacement-measuring system should be in line with the functional point whose displacement is to be measured. If this is not possible, either the slideways that transfer the displacement must be free of angular motion or angular-motion data must be used to calculate the consequences of the offset. accessory spindle: a spindle supplied with a machine, not the main spindle, which was not manufactured by the Supplier of the base machine and is, by the machine Supplier, considered an “add-on.” accuracy: quantitative measure of the degree of confor- mance to recognized national or international physical standards and methods of measurement. 1 accuracy (of measurement): closeness of the agreement between the result of a measurement and a true value of the measurand. NOTES: (1) The term accuracy is a qualitative concept. 1 (2) The term precision should not be used for accuracy. actual path: path produced by the machine tool when programmed to move along a nominal path. actual position, P ij (i p 1 to m; j p 1 to n): measured position reached by the moving component on the jth approach to the ith target position. ambient temperature: temperature of the ambient air (or other working fluid, such as oil on an oil-showered machine) surrounding a machine. See also mean ambient temperature. angular drift of axis average line: change in angle of a spindle’s axis average line caused by thermal effects due to spindle rotation.