ASME B89-1-13 pdf free download

ASME B89-1-13-2001 pdf free download.MICROMETERS.
This Standard is intended to provide the essential requirements for micrometers as a basis for mutual understanding between manufacturers and consumers. Outside, inside, and depth micrometers are described in the Standard.
2 DEFINITIONS backlash: a relative movement between interacting mechanical parts, resulting from looseness [ASME B5.54M-1992 (R1998)]. In this Standard, backlash is further defined as the rotation of the spindle, in the opposite direction of the initial reading, before spindle moves in a linear direction. This condition is typically caused by looseness of fit between the lead screw and adjusting nut. bias: systematic error of the indication of a measuring instrument (VIM). eccentricity: the distance between the geometric center or axis of the body and its axis of rotation. end shake: the amount of spindle movement, when an axial force is applied in the direction of the spindle alternating towards the anvil and away from the anvil, without rotating the spindle. error (of indication) of a measuring instrument: indi- cation of a measuring instrument minus a true value of the corresponding quantity (VIM). NOTE: This concept applies mainly where the instrument is compared to a reference standard. fatness: the condition of a surface having all elements in one plane (ASME Y14.5M-1994). maximum permissible error (MPE): extreme values of an error permitted by specifications, et.. for a given measuring instrument (VIM). parallelism: the condition of a surface or center plane, equidistant at all points from a datum plane or axis, equidistant along its length from one or more datum planes or a datum axis (ASME Y14.5M-1994).
runout: a composite tolerance used to control the functional relationship of one or more features of a part to a datum axis. The types of features controlled by runout tolerances include those surfaces constructed around a datum axis and those constructed at right angles to a datum axis (ASME Y 14.5M-1994). side shake: the amount of spindle side movement, when a force is applied perpendicularly to the measuring end of the spindle, alternating from side to side, without rotating the spindle. tolerance: the total amount the specified dimension is permitted to vary. The tolerance is the difference between the maximum and minimum limits (ASME Y14.5M- 1994). 3 REFERENCES This Standard has been coordinated insofar as possible with the following standards. ASME B5.54M-1992 (R1998)， Methods for Perform- ance Evaluation of Computer Numerically Controlled Machine Centers ASME Y14.5M- 1994, Dimensioning and Tolerancing Publisher: The American Society of Mechanical Engi- neers (ASME International), Three Park Avenue, New York, NY 10016 IEEE/ASTM SI 10-1997， Standard for Use of the Intermational System of Units (SD): The Modern Metric System Revision and Redesignation of ANSI/ IEEE Std 268-1992 and ASTM E 380 Publisher: Institute of Electrical and Electronics Engi- neers (IEEE), 445 Hoes Lane, Piscataway, NJ 08854 ISO 361 I, Micrometers Calipers for External Measure- ments, 1978.ASME B89-1-13 pdf download.