1、Ref. No. DIN 6306 : 2002-06English price group 07 Sales No. 010703.03DEUTSCHE NORM June 20026306Continued on pages 2 to 6. No part of this translation may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the ex
2、clusive right of sale for German Standards (DIN-Normen).Tommy screws with movable barTranslation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.ICS 21.060.10Knebelschrauben mit losem KnebelIn keeping with current practice in standar
3、ds published by the International Organization for Standardization(ISO), a comma has been used throughout as the decimal marker.ForewordThis standard has been prepared by Technical Committee Bohrbuchsen, Spannzeuge und Vorrichtungen ofthe Normenausschuss Werkzeuge und Spannzeuge (Tools and Clamping
4、Devices Standards Committee).AmendmentsThis standard differs from the January 1981 edition as follows:a) General tolerances shall be those specified in ISO 2768-1.b) Dimensions r2and r3have been specified (cf. figure 3 and table 3).c) The required case hardening depth and surface hardness of thrust
5、pads have been amended.d) The standard has been editorially revised.Previous editionsDIN 6306: 1931-12, 1940x-05, 1969-01, 1980-07, 1981-01.All dimensions are in millimetres.1 ScopeThis standard specifies requirements for tommy screws with movable bar for use with nuts in jigs and fixtureswhere the
6、required torque is relatively small.2 Normative referencesThis standard incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the titles of the publications arelisted below. For dated references
7、, subsequent amendments to or revisions of any of these publicationsapply to this standard only when incorporated in it by amendment or revision. For undated references, thelatest edition of the publication referred to applies.Supersedes January 1981edition.Page 2DIN 6306 : 2002-06DIN 76-1 Thread ru
8、n-outs and thread undercuts for ISO metric screw threads in accordance with theDIN 13 seriesDIN 267-2 Fasteners Technical delivery conditions Product grades and tolerancesDIN 2098-1 Helical springs made of round wire Dimensions for cold coiled compression springs withwire diameters greater than or e
9、qual to 0,5 mmDIN 6311 Thrust padsDIN EN 10277-5 Bright steel products Technical delivery conditions Part 5: Steels for quenching andtemperingDIN EN ISO 898-1 Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts,screws and studs (ISO 898-1 : 1999)DIN EN ISO 7091 Plai
10、n washers Normal series Product grade C (ISO 7091 : 2000)ISO 2768-1 : 1989 General tolerances Part 1: Tolerances for linear and angular dimensions without indi-vidual tolerance indications3 Dimensions and designation3.1 Tommy screwsTommy screw dimensions shall be as given in figures 1 and 2 and tabl
11、e 1.Design details left unspecified shall be selected as appropriate.General tolerances shall be class m tolerances as in ISO 2768-1.Key1 Screw2 Tommy bar3 Collar4 Compression spring as in DIN 2098-15 Washer as in DIN EN ISO 7091Figure 1: Dimensions of tommy screw with movable bar(type D, without th
12、rust pad) (notation)Designation of an M 16 tommy screw (M 16) of type D (D), with a length, l1, of 70 mm (70):Tommy screw DIN 6306 D M 16 70Page 3DIN 6306 : 2002-06Key1 Thrust pad as in DIN 6311Other dimensions as for type D.Figure 2: Tommy screw with movable bar(type E, with thrust pad)Table 1: Tom
13、my screw dimensions1) Length l1to be inserted.No.QuantityTypeDTypeEName of elementDesignation of screw for thread sizeScrewTommy barCollarCompression springWasherThrust padTable 2: DesignationPage 4DIN 6306 : 2002-063.2 ScrewsScrew dimensions shall be as given in figure 3 and table 3.1) x1as in DIN
14、76-1.Figure 3: Screw dimensions (notation)Table 3: Screw dimensionsPage 5DIN 6306 : 2002-063.3 Tommy barsTommy bar dimensions shall be as given in figure 4 and table 4.Figure 4: Tommy bar dimensions (notation)Table 4: Tommy bar dimensionsThread size(d1)M10 M12 M16 M20d688 810 813 816d785 886 888 810
15、l888 889 811 813l9 R 82 102 122 1423.4 CollarsCollar dimensions shall be as given in figure 5 and table 5.Figure 5: Collar dimensions (notation)Table 5: Collar dimensionsThread size(d1)M10 M12 M16 M20d68101316d810 13 16 20d95,1 6,1 8,1 10,1l107 8 10 12r22335Page 6DIN 6306 : 2002-064 Materials4.1 Scr
16、ewsScrews shall be of property class 5.8 as specified in DIN EN ISO 898-1.4.2 Tommy barsTommy bars shall be made of grade CK 45 steel as specified in DIN EN 10277-5.4.3 CollarsThe steel used for collars shall be at the manufacturers discretion.5 Design and finishScrews shall be produced to tolerance
17、 class m as in DIN 267-2.Thrust pads shall be case hardened to a depth of (0,3 + 0,2) mm (440 HV 1), with a hardness of (550 + 100) HV 10,and provided with a black oxide coating.Other relevant standardsDIN 6304 Tommy screws with fixed barDIN 6305 Tommy nuts with fixed barDIN 6307 Tommy nuts with movable bar
