DIN ISO 3442-3-2010 Machine tools - Dimensions and geometric tests for self-centring chucks with two-piece jaws - Part 3 Power-operated chucks with serrated jaws (ISO 3442-3 2007)《.pdf

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1、August 2010 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 25.060.20!$jB;“1713124www.din.deDDIN ISO 3442-3Machine tools Dimensions and geometric tests for self-centring chucks with two-piecejaws Part 3: Power-operated chucks with serrated jaws (ISO 3442-3:2007)English translation of DIN ISO 3442-3:2010-08Werkzeugmaschinen Mae und geometrische Prfungen fr z

3、entrierende Drehfutter mit zweiteiligen Backen Teil 3: Kraftbettigte Futter mit Backen mit Spitzverzahnung (ISO 3442-3:2007)Englische bersetzung von DIN ISO 3442-3:2010-08Machines-outils Dimensions et essais gomtriques pour mandrins serrage concentrique et morsrapports Partie 3: Mandrins commande ax

4、iale assiste avec mors assemblage par dentelure(ISO 3442-3:2007)Traduction anglaise de DIN ISO 3442-3:2010-08www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 19 pages07.10 DIN ISO 3442-3:2010-08 A comma is used as the decimal marker. Con

5、tents Page National foreword .3 National Annex NA (informative) Bibliography.3 1 Scope 4 2 Normative references 4 3 Preliminary remarks.4 3.1 Measuring units .4 3.2 Geometric tests4 3.3 Tests to be performed .4 5 Sizes for interchangeability 5 5.1 90 serrations Dimensions .5 5.2 90 serrations Permis

6、sible cumulative pitch deviation.5 5.3 60 serrations Dimensions .6 5.4 60 serrations Permissible cumulative pitch deviation.6 5.5 Jaw nuts Dimensions7 6 Geometric tests8 6.1 Test mandrels.8 6.2 Spindle or face plate accuracy .8 6.3 Chuck body accuracy8 6.4 Test with test top jaws (hard jaws) 8 6.5 T

7、ests with machined top jaws9 6.6 Tests off-the-spindle .9 6.7 Chuck accuracy12 2 4 Accuracy classes.4 National foreword This standard has been prepared by Technical Committee ISO/TC 39 “Machine tools”, Subcommittee SC 8 “Work holding spindles and chucks”. The responsible German body involved in its

8、preparation was the Normenausschuss Werkzeuge und Spannzeuge (Tools and Clamping Devices Standards Committee), Working Committee NA 121-02-07 AA Drehmaschinenspannzeuge und Zubehr. DIN ISO 3442 consists of the following parts, under the general title Machine tools Dimensions and geometric tests for

9、self-centring chucks with two-piece jaws: Part 1: Manually operated chucks with tongue and groove type jaws Part 2: Power-operated chucks with tongue and groove type jaws Part 3: Power-operated chucks with serrated jaws Attention is drawn to the possibility that some of the elements of this document

10、 may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 230-1 DIN ISO 230-1 ISO 965-3 DIN ISO 965-3 National Annex NA (inform

11、ative) Bibliography DIN ISO 230-1, Machine tools Test code for machine tools Part 1: Geometric accuracy of machines operating under no-load or finishing conditions DIN ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructional threads 3 DIN ISO 3442-3:2010-0

12、8 1 Scope This part of ISO 3442 specifies 90 and 60 serrations and jaw nuts applicable to 90 and 60 serrations for mounting the top jaws on the base jaws of power chucks, in order to ensure interchangeability. It also describes, with reference to ISO 230-1, the geometric tests for self-centring, pow

13、er-operated chucks with two or more two-piece jaws (serrated type), and the corresponding tolerances which apply. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refere

14、nces, the latest edition of the referenced document (including any amendments) applies. ISO 230-1:1996, Test code for machine tools Part 1: Geometric accuracy of machines operating under no-load or finishing conditions ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations

15、 for constructional screw threads 3 Preliminary remarks 3.1 Measuring units All dimensions and tolerances in this part of ISO 3442 are expressed in millimetres. 3.2 Geometric tests This part of ISO 3442 deals only with the inspection of rotational accuracy of the chuck, the straightening and the cen

16、tring of workpieces. It does not apply to other dynamic qualities, such as the measurement of lack of balance during rotation, balancing or the measurement of gripping power. 3.3 Tests to be performed When inspecting a chuck, it is not always necessary to carry out all the tests described in this pa

17、rt of ISO 3442. The users of this part of ISO 3442 may choose those tests which relate to the properties that are of interest to them. 4 Accuracy classes This part of ISO 3442 specifies only one accuracy class. Machine tools Dimensions and geometric tests for self-centring chucks with two-piece jaws

18、 Part 3: Power-operated chucks with serrated jaws 4 DIN ISO 3442-3:2010-08 5 Sizes for interchangeability 5.1 90 serrations Dimensions The sizes for interchangeability are shown in Figure 1 and Table 1. aAny profile contained within the hatched area is acceptable. Figure 1 90 serrations Table 1 Dime

19、nsions of 90 serrations Checking dimensions Designation p h/2 r1r2min. a min. b max. c max. d1ae 1/16“ 90 b1,587 5 0,397 0,12 to 0,18 0,25 0,64 0,71 0,35 1,1 0,93 3/32“ 90 b2,3812 5 0,595 0,15 to 0,25 0,4 0,97 1,08 0,57 1,65 1,4 aThe pin diameters given are recommended values. If pins of non-standar

20、d diameter are used, the manufacturer shall be responsible for recalculating the dimensions such that the form and geometry conform with this part of ISO 3442. b1/16“ and 3/32“ designations are commonly used even though they originate from inch dimensions. 5.2 90 serrations Permissible cumulative pi

21、tch deviation The permissible deviations are shown in Table 2 in function of the measuring length and the number of teeth, for both 1/16“ 90 and 3/32“ 90 serrations. Table 2 Permissible deviations for 90 serrations Designation 1/16“ 90 3/32“ 90 Permissible deviation Measuring length Number of teeth

22、Measuring length Number of teeth 0,008 25,4 16 26,194 11 0,012 50,8 32 50,006 21 0,016 76,2 48 76,2 32 0,020 101,6 64 102,394 43 0,024 127 80 126,206 53 0,028 152,4 96 152,4 64 5 DIN ISO 3442-3:2010-08 5.3 60 serrations Dimensions The sizes for interchangeability are shown in Figure 2 and Table 3. a

23、Any profile contained within the hatched area is acceptable. Figure 2 60 serrations Table 3 Dimensions of 60 serrations Checking dimensions Designation p h/2 r1r2min. a min. b max. c max. d1ae 1,5 601,5 0,65 0,12 to 0,2 0,24 0,24 0,435 0,502 0,866 0,65 3 603 1,299 0,22 to 0,5 0,42 0,42 0,780 0,901 1

24、,732 1,299 aThe pin diameters given are recommended values. If pins of non-standard diameter are used, the manufacturer shall be responsible for recalculating the dimensions such that the form and geometry conform with this part of ISO 3442. 5.4 60 serrations Permissible cumulative pitch deviation T

25、he permissible deviations are shown in Table 4 in function of the measuring length and the number of teeth, for both 1,5 60 and 3 60 serrations. Table 4 Permissible deviations for 60 serrations Designation 1,5 60 3 60 Permissible deviation Measuring length Number of teeth Measuring length Number of

26、teeth 0,008 30 20 30 10 0,013 60 40 60 20 0,018 90 60 90 30 0,023 120 80 120 40 0,028 150 100 150 50 6 DIN ISO 3442-3:2010-08 5.5 Jaw nuts Dimensions The sizes for interchangeability are shown in Figure 3 and Table 5, in function of the nominal size of the chuck and the corresponding serration adopt

27、ed. Figure 3 Jaw nuts Table 5 Dimensions of jaw nuts Nominal diameter of chuck dnom100 125 160 200 250 315 400 500 630 800 d210 12 14 17 21 21 25,5 25,5 25,5 25,5 t22,5 2,5 2,5 2,5 2,5 2,5 3,5 3,5 3,5 3,5 t14,5 4,5 4,5 4,5 4,5 4,5 5,5 5,5 5,5 5,5 Jaw nut d3aM6 M8 M10 M12 M16 M16 M20 M20 M20 M20 Desi

28、gnation of the serration 1/16“ 90 1,5 60 3/32“ 90 3 60 aTolerance of thread, 6H (see ISO 965-3). 7 DIN ISO 3442-3:2010-08 6 Geometric tests 6.1 Test mandrels The test mandrels shall be manufactured from solid steel and hardened to avoid damage to external surface due to the gripping force of the chu

29、ck. The test mandrel diameter should be approximately equal to 20 % of the nominal chuck diameter or as agreed between the manufacturer and the user. The accuracy of test mandrels used shall be as specified in ISO 230-1:1996, A.3, for test mandrels of similar diameters. Figure 4 Tolerances of test j

30、aws 6.2 Spindle or face plate accuracy For the geometric tests which involve chuck rotation, the chuck should be mounted on a test spindle either directly or by means of a chuck adaptor. The radial run-out on the outside diameter of the spindle or face plate, and the camming at any point on its face

31、, shall have been previously checked as in G01 and G02. 6.3 Chuck body accuracy Tests G1 and G2 refer to the accuracy of the body only. The tests should be carried out without clamping force. 6.4 Test with test top jaws (hard jaws) The geometric test shall be performed using test jaws with flat nose

32、, machined off the chuck, case hardened (60 HRC to 62 HRC) to allow them to withstand the clamping forces without permanent distortion. The clamping force shall be at the level of 67 % (2/3) of the maximum gripping force for that chuck. The functional dimensions for a set of test jaws shall be withi

33、n 0,005 mm (see Figure 4). 8 DIN ISO 3442-3:2010-08 6.5 Tests with machined top jaws Tests G5 and G6 are performed with a set of top jaws mounted, paired, marked and machined in assembly with the base jaws on the chuck. The top jaws are machined both on the clamping surfaces and on the axial part lo

34、cating surfaces, under clamped conditions. The clamping force, for machining of the top jaws and for performing tests G5 and G6, shall be at the level of 67 % (2/3) of the maximum clamping force for that chuck. These tests show the maximum possible accuracy of the chuck clamping as long as the top a

35、nd base jaws are kept paired together as machined. Switching the top and base jaws will in most cases diminish the clamping accuracy of the chuck (unless G3 shows perfect compliance). These tests are used to validate the accuracy of the chuck for a given diameter. 6.6 Tests off-the-spindle Tests G7

36、and G8 do not require use of the test spindle mentioned in 6.2. 9 DIN ISO 3442-3:2010-08 Object Checking radial run-out of the spindle nose or face plate. G01 Diagram Tolerance 0,005 Measured deviation Measuring instruments Dial gauge. References to ISO 230-1:1996 and observations 5.611.4 and 5.612.

37、2In the case of a tapered spindle nose, the stylus of the dial gauge shall be set normal to the surface which is to be checked. 10 DIN ISO 3442-3:2010-08 Object Checking camming of the spindle nose or face plate. G02 Diagram Tolerance 0,005 Measured deviation Measuring instruments Dial gauge. Refere

38、nces to ISO 230-1:1996 and observations 5.6311 DIN ISO 3442-3:2010-08 6.7 Chuck accuracy Object Checking radial run-out of the outside diameter. G1 Diagram Nominal diameter of chuck dnomTolerance x (full indicator movement) dnomu 125 125 dnomu 200 200 dnomu 315 315 dnomu 500 500 dnomu 800 0,02 0,03

39、0,04 0,05 0,06 Measured deviation For dnom= Measuring instruments Dial gauge. References to ISO 230-1 and observations NOTE Two measurements are possible: a) with the chuck mounted on a spindle, or b) with a measuring machine. The results of the two measurements may differ depending on the tolerance

40、s of spindle noses and chuck bodies. 12 DIN ISO 3442-3:2010-08 Object Checking camming of chuck face. G2 Diagram Nominal diameter of chuck dnomTolerance x (full indicator movement) dnomu 125 125 dnomu 200 200 dnomu 315 315 dnomu 500 500 dnomu 800 0,02 0,03 0,04 0,05 0,06 Measured deviation For dnom=

41、 Measuring instruments Dial gauge. References to ISO 230-1 and observations The dial gauge should be placed on the maximum possible diameter. NOTE Two measurements are possible: a) with the chuck mounted on a spindle, or b) with a measuring machine. The results of the two measurements may differ dep

42、ending on the tolerances of spindle noses and chuck bodies. 13 DIN ISO 3442-3:2010-08 Object Checking radial run-out of the test mandrels clamped by test jaws (close to the jaw). G3 Diagram Nominal diameter of chuck dnomTolerance x (full indicator movement)dnomu 125 125 dnomu 200 200 dnomu 315 315 d

43、nomu 500 500 dnomu 800 0,08 0,10 0,12 0,14 0,16 Measured deviation For dnom= Measuring instruments Dial gauge. References to ISO 230-1 and observationsTo ensure maximum stability of jaw gripping on the test mandrel, it may be axially held on the chuck face, where necessary, by a ground holding plate

44、. This test is performed with an interchangeable set of test jaws, as described above. The results obtained by this test represent only the geometric accuracy of the chuck assembly including the base jaws. Compliance with the tolerances as specified for this test will assure interchangeability of th

45、e top jaws. The actual clamping accuracy of the chuck can be determined by the use of a set of production jaws ground or turned on the chuck (see G5). 14 DIN ISO 3442-3:2010-08 Object Checking equidistance between the top surfaces of the top jaws (measured with test jaws). G4 Diagram Nominal diamete

46、r of chuck dnomTolerance x (full indicator movement) dnomu 125 125 dnomu 200 200 dnomu 315 315 dnomu 500 500 dnomu 800 0,03 0,04 0,06 0,08 0,10 Measured deviation For dnom= Measuring instruments Dial gauge. References to ISO 230-1 and observations To ensure maximum stability of jaw gripping on the t

47、est mandrel, it may be axially held on the chuck face, where necessary, by ground holding plate. The dial gauge should be placed on the smallest possible diameter. 15 DIN ISO 3442-3:2010-08 Object Checking radial run-out of the test mandrels clamped by machined top jaws (close to the jaw). G5 Diagra

48、m Nominal diameter of chuck dnomTolerance x (full indicator movement) dnomu 125 125 dnomu 200 200 dnomu 315 315 dnomu 500 500 dnomu 800 0,03 0,04 0,05 0,06 0,08 Measured deviation For dnom= Measuring instruments Dial gauge. References to ISO 230-1 and observations Test G5 shall be repeated not less

49、than three times to check the repeatability of gripping; each measured deviation shall fall within the quoted full indicator movement figure. See also 6.5. 16 DIN ISO 3442-3:2010-08 Object Checking equidistance between the top surfaces of the top jaws (measured with machined top jaws). G6 Diagram Nominal diameter of chuck dnomTolerance x (full indicator movement) dnomu 125 125 dnomu 200 200 dnomu 315 31