1、Micrometers Part 3: Special design external micrometers Designs, requirements and testing ICs 17.040.30 Prfen geometrischer Gren - Meschrauben - Teil 3: Bgelmeschrauben, Sonderausfhrungen - Konstruktionsmerkmale, Anforderungen, Prfungen DIN 863-3 Supersedes October 1983 edition. In keeping with curr
2、ent practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker. Foreword This standard has been prepared by the Normenausschu Technische Grundlagen (Fundamentals in Technology Standards Committee). The DIN 863 s
3、eries of standards comprises the following: Part 1 : Standard design external micrometers - Concepts, requirements and testing Part 2: Fixed micrometers and depth micrometers - Concepts, requirements and testing Part 3: Special design external micrometers - Designs, requirements and testing Part 4:
4、Internal micrometers - Concepts, requirements and testing Amendments This standard differs from the October 1983 edition in that the terminology has been harmonized with DIN 863-1 and DIN 863-2, and the standard has been editorially revised. Previous edition DIN 863-3: 1983-1 O. Dimensions in mm 1 S
5、cope This standard specifies requirements for special design external micrometers supplementing the specifica- tions of DIN 863-1. 2 Normative references This standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropr
6、iate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publi
7、cation referred to applies. DIN 863-1 Micrometers - Standard design external micrometers - Concepts, requirements and testing DIN 878 Dial gauges DIN 879-1 Dial gauges with mechanical indication DIN 879-3 Dial gauges with electrical cutoff contacts Continued on pages 2 to 8. Translation by DIN-Sprac
8、hendienst. In case of doubt, the German-language original should be consulted as the authoritative text. I Q No pari of this translation may be reproduced without the prior permission of euth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN
9、 863-3 : 1999-04 Sales No. 0108 11.99 DIN Deutsches Institut fur Normung e. V., Berlin. English price group 08 Page 2 DIN 863-3 : 1999-04 DIN 1319-1 Basic concepts in metrology - General concepts DIN 1319-2 Basic concepts in metrology - Terminology relating to the use of measuring instruments DIN 22
10、57-1 Terminology used in dimensional metrology - Units, activities, checking instruments - Metrological concepts DIN 2269 Measuring pins DIN 3960 Concepts and parameters for the determination of involute spur gears (cylindrical gears) and spur gear pairs (cylindrical gear pairs) DIN EN IS0 3650 Geom
11、etrical Product Specifications (GPS) - Length standards - Gauge blocks (IS0 3650 : 1998) IS0 14 : 1982 Straight-sided splines for cylindrical shafts with internal centering - Dimensions, toler- ances and verification IS0 1502 : 1996 IS0 general-purpose metric screw threads - Gauges and gauging IS0 2
12、768-1 : 1989 General tolerances - Part 1 : Tolerances for linear and angular dimensions without indi- vidual tolerance indications l International vocabulary of basic and general terms in metrology (VIM), published by the International Organization for Standardization (ISO), 1993.*) 3 Designation De
13、signation of a micrometer in accordance with this standard used to measure root tangent lengths of gear teeth (D7), with a measuring range of O to 25 mm (0-25): Micrometer DIN 863 - D7 - 0-25 4 Concepts, design features, dimensions, requirements and testing 4.1 Concepts For the purposes of this stan
14、dard, the concepts defined in DIN 1319-1, DIN 1319-2, DIN 2257-1 and l apply. 4.2 Design features, dimensions, requirements, testing The designs shown in table 1 are for illustrative purposes only; however, the dimensions shall be as specified. Any deviating dimensions shall be subject to agreement.
15、 General tolerances shall be class m tolerances as in IS0 2768-1. Table 1 : Design features, dimensions, requirements and testing of special design external micrometers Design features Examples of application and remarks Requirements and testing 4.2.1 Micrometer with spherical measuring faces (type
16、D1) 1 Anvil 2 Spindle 3 Measuring faces For measuring ball bearing in- ner rings. This type of micrometer is nor- mally set using gauge blocks as in DIN EN IS0 3650. When the measuring forces specified in DIN 863-1 are ap- plied using this type of microm- eter, the surface pressure is greater. Eithe
17、r one or both of the meas- uring faces may be spherical. (continued) *) Obtainable from Beuth Verlag GrnbH, Burggrafenstrae 6, D-10787 Berlin. The manufacturer shall specify the radius of the spherical faces. Page 3 DIN 863-3 : 1999-04 dimen- sions Table 1 (continued) I I I 5 1 * Design features Exa
18、mples of application Requirements and and remarks testing 4.2.2 Small-framed micrometers (type D2) 23 1 Measuring faces 2 Anvil 3 Spindle Small frame with surface between measuring faces to sumort wire or balls to be measured. For measuring wire or ball diameters. The preferred measuring range is O
19、mm to 10 mm. 4.2.3 Micrometer with small measuring faces (type D3) 1 Anvil 2 Spindle 3 Measuring faces 4.2.4 Blade-type micrometer (type D4) 4 1 Anvil 2 Spindle 3 Measuring faces - Measuring face on the spindle side does not rotate. When checking the meas- uring faces, an edge zone 0,l .din width sh
20、all be dis- regarded. For measuring grooves and splines. When the measuring forces specified in DIN 863-1 are ap- plied using this type of microm- eter, the surface pressure is greater. For measuring narrow grooves (e.g. of retaining rings). When the measuring forces specified in DIN 863-1 are ap- p
21、lied using this type of microm- eter, the surface pressure is greater. Preferred I dimen- sions Y 10 10 When checking the flatness of measuring faces, an edge zone 0,l . b in width shall be disregarded. (continued) Page 4 DIN 863-3 : 1999-04 Tangent length to be Upto100 Over 100 Table 1 (continued)
22、Tolerances for measuring faces, in ym Flat- Paral- ness lelism 2 5 2 6 Design features Examples of application and remarks Requirements and testing 4.2.5 Pointed-contact micrometer with conical tips (type D5) 1 Anvil 2 Spindle 3 Measuring faces For measuring root diameter of splines (e.g. as in IS0
23、14). When the measuring forces specified in DIN 863-1 are applied using this type of micrometer, the surface pressure is greater. 4.2.6 Micrometer with large measuring faces (type D6) 1 Anvil 2 Spindle 3 Measuring faces Measuring faces have rounded edges to avoid damaging soft materials. For measuri
24、ng felt, rubber, paper, board, fabrics. The manufacturer shall specify the spindle and anvil dimensions near the measuring faces. When checking measuring faces, an edge zone 0,l . d in width shall be disregarded. The flatness tolerance for measuring faces shall be 3 ym, and the parallelism tolerance
25、 shall be 6 ym. The manufacturer shall specify the measuring face diameters. The preferred measuring range is O mm to 25 mm. 4.2.7 Micrometer for measuring root tangent lengths of gear teeth (type D7) 1 Anvil 2 Spindle 3 Measuring faces Measuring faces are disc-shaped, flat and annular. For measurin
26、g the root tangent length of gear teeth, W, as in DIN 3960, and distances between grooves. Preferred diameters of measur- ing faces for tangent lengths up to 100 mm: 25 mm over 100 mm: 30 mm The manufacturer shall specify the smallest mod- ule of the tooth system that can be measured using this micr
27、ometer. (continued) Page 5 DIN 863-3 : 1999-04 Examples of application and remarks Design features Table 1 (continued) Requirements and testing I 4.2.8 Micrometer with deep frame (type D8) 1 Anvil 2 Spindle 3 Measuring faces I 4.2.9 Micrometer with dial (type D9) For measuring large semi- finished p
28、roducts such as plates, sheets, etc. Due to the shape of the frame, the limit of error, G, may be greater than that specified in DIN 863-1. The manufacturer shall specify the frame depth and the limit of error. I For measuring sheet and strip. Due to the shape of the frame, the limit of error, G, ma
29、y be greater than that specified in DIN 863-1. Measuring range: O mm to 15 mm. The manufacturer shall specify the frame depth, measuring face diam- eters, measuring range, limit of error and the flatness and parallelism tolerances for measuring faces. 3 Measuring faces Spindle is connected to a poin
30、ter that moves in front of a dial with 0,Ol mm scale intervals. 4.2.1 O Micrometer with prismatically arranged measuring faces (type D 1 O) I 1 3 Measuring faces Type D10-3 for 3-point contact Aperture angle of prism: 60“ Spindle pitch: 0,75 mm Type D10-5 for 5-point contact Aperture angle of prism:
31、 108“ Spindle pitch: 0,559 mm Type D10-7 for 7-point contact Aperture angle of prism: Spindle pitch: 0,527 5 mm 128“ 34 17“ When checking out-of- roundness, the difference between readings at different points along the circumfer- ence does not correspond to the actual deviation from circularity; in
32、this case, special geometrical features shall be taken into account. The manufacturer shall specify the measuring range. The parallelism of tangent lines shall be checked using balls, measuring pins as in DIN 2269, or setting standards. The indication error shall be determined using grade 1 measurin
33、g pins as in DIN 2269 or another suitable material measure of the same degree of accuracy. (continued) Page 6 DIN 863-3 : 1999-04 Examples of application and remarks Table 1 (continued) Requirements and testing I 4.2.1 1 Micrometer with large measuring face on anvil (type Dll) I 2 1 Anvil 2 Spindle
34、3 Measuring faces For measuring the width of cylindrical milling cutters with staggered teeth, for example. thicknesses (type D12) 1 1 -1 1 Anvil 2 Spindle 3 Measuring faces I 4.2.13 Precision dial micrometer (type D13) 3 / 2 1 Anvil 2 Spindle 3 Measuring faces The anvil is longitudinally adjustable
35、, subjected to the measuring force and connected to a precision dial, and has a lift-off device (no The flatness tolerance for the anvils measuring face shall be 2 ym, but its length and width shall be specified by the manufac- turer. For measuring wall thicknesses of curved parts (e.g. pipes). When
36、 the measuring forces specified in DIN 863-1 are ap- plied using this type of microm- eter, the surface pressure is greater. Preferred dimensions The limit of error, G, shall be 10 ym. For series testing. Advantage: The nominal dimension is set with the spindle, and the deviation of the measured dim
37、ension from this value is read off the dial gauge. For a low level of uncertainty of measurement, it is recom- mended that the micrometer be set using gauge blocks as in DIN EN IS0 3650. The scale division of the dial indicator shall be 1 ym or 2 ym. The limit of error, G, and repeatability shall be
38、 as in DIN 879-1 and DIN 879-3. The measuring force for the anvil shall be from 5 N to 10 N. (continued) Page 7 DIN 863-3 : 1999-04 Examples of application and remarks Design features Table 1 (continued) Requirements and testing I 4.2.14 Micrometer with dial gauge or precision dial (type D14) 1 Anvi
39、l 2 Spindle 3 Measuring faces For series testing. Advantage: The nominal dimension is set with the spindle, and the deviation of the measured dimension from this value is read off the dial gauge. For a low level of uncertainty of measurement, it is recom- mended that the micrometer be set using gaug
40、e blocks as in DIN EN IS0 3650. The anvil is longitudinally adjustable, subjected to the measuring force and connected to a pre- cision dial or regular dial gauge, and has a lift-off device (no ratchet required). 4.2.15 Micrometer with dial and adjustable anvil (type D15) 1 3 2 For series testing. A
41、dvantage: The nominal dimension is set with the spindle, and the deviation of the measured dimension from this value is read off the dial gauge. For a low level of uncertainty of measurement, it is recom- mended that the micrometer be set using gauge blocks as in DIN EN IS0 3650. 1 Anvil 2 Spindle 3
42、 Measuring faces Adjustable measuring range. The anvil is longitudinally adjustable through a barrel with a setting mark, and is connected to a dial gauge or precision dial (no ratchet required). 4.2.1 6 Micrometer with interchangeable anvils (type D16) 1 3 2 1 Anvil 2 Spindle 3 Measuring faces 1 Le
43、ngth graduation: 25 mm. Also available with adjust- able anvil. For precision dials, the limit of error, G, and repeatability shall be as in DIN 879-1 and DIN 879-3; for regular dial gauges, they shall be as in DIN 878. The measuring force for the anvil shall be from 5 N to 10 N. For precision dials
44、, the limit of error, G, and repeatability shall be as in DIN 879-1 and DIN 879-3, and for regular dial gauges, they shall be as in DIN 878. For measuring ranges up to 500 mm, the limit of error, G, shall be as in DIN 863-1. For measuring ranges above 500 mm, the manufacturer shall specify the limit
45、 of error. Each anvil shall be marked with the meas- uring range and set num ber. (continued) Page 8 DIN 863-3 : 1999-04 Examples of application and remarks Design features Requirements and testing For measuring pitch circle or indirect tooth thickness (cf. DIN 3960) of straight or stag- gered teeth
46、. Grading of ball diameters shall be according to the tooth sys- tem module. When the measuring forces specified in DIN 863-1 are ap- plied using this type of microm- eter, the surface pressure is greater. 12 1 Anvil 2 Spindle 3 Measuring faces 4.2.18 Micrometer for thread measurement (type D18) 1 A
47、nvil 2 Spindle 3 Measuring faces Has interchangeable measuring inserts. On the anvil side there are longitudinally adjust- able holders for inserts with vee-formed meas- uring faces, an adjusting screw and a clamping device. 4.2.19 Bench-mounted micrometer (type D19) For measuring pitch diameter. Me
48、asuring inserts shall be suitable for type and size of thread to be measured. Special setting standards are available for micrometers with capacities above 25 mm. The manufacturer shall specify the diameter of the socket for the ball inserts. Measuring inserts shall rotate easily in the holder sockets. Tolerances on partial thread angles shall be as in IS0 1502. 1 Anvil 2 Spindle I I I 3 Measuring faces Type D1, D3 to D7, Dll, D14, D17 and D18 microm- eters may also be bench- mounted. The manufacturer shall specify limits of error and any additional design feat ures.
