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1、Reference number ISO 7787-2:2000(E) ISO 2000 INTERNATIONAL STANDARD ISO 7787-2 Fourth edition 2000-12-15 Dental rotary instruments Cutters Part 2: Carbide laboratory cutters Instruments rotatifs dentaires Fraises techniques Partie 2: Fraises techniques en carbure Copyright International Organization
2、 for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In
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4、es licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for
5、printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2000 All rights reserved. Unless otherwise specified, no part of t
6、his publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 ? CH
7、-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2000 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not
8、 for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) ISO 2000 All rights reservediii ContentsPage Foreword.iv Introduction.v 1Scope 1 2Normative references1 3Classification1 4Symbols2 5Requirements.2 5.1Materials .2 5.2Shapes 2
9、 5.3Dimensions and number of blades2 5.4Toothing8 5.5Run-out.8 6Test procedures.8 6.1Shapes 8 6.2Dimensions and number of blades8 6.3Toothing9 6.4Run-out.9 7Sampling and acceptance level (AQL) 9 8Designation of toothing and number of blades9 9Marking on the instrument10 10Labelling on the package10
10、11Packaging.10 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) iv ISO 2000 A
11、ll rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a su
12、bject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (
13、IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter
14、national Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 7787 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Int
15、ernational Standard ISO 7787-2 was prepared by Technical Committee ISO/TC 106, Dentistry, Subcommittee SC 4, Dental instruments. This fourth edition cancels and replaces the third edition (ISO 7787-2:1998), which has been technically revised as follows: ?addition of designation of toothing; ?additio
16、n of labelling and marking requirements; ?exclusion of miniature carbide laboratory cutters. ISO 7787 consists of the following parts, under the general title Dental rotary instruments Cutters: ?Part 1: Steel laboratory cutters ?Part 2: Carbide laboratory cutters ?Part 3: Carbide laboratory cutters
17、for milling machines ?Part 4: Miniature carbide laboratory cutters Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without lic
18、ense from IHS -,-,- ISO 7787-2:2000(E) ISO 2000 All rights reservedv Introduction This part of ISO 7787 is one of a series of standards relating to dental rotary instruments. The various dimensional and other requirements specified for carbide laboratory cutters are those considered important to ens
19、ure the interchangeability and safe usage of these instruments in the dental laboratory. The nominal diameters of the working part listed in Tables 1 to 11 comply with the diameters specified in ISO 2157, Dental rotary instruments Nominal diameters and designation code number. Attention is drawn to
20、ISO 6360, which specifies a 15-digit number coding system for the identification of dental rotary instruments of all types. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:
21、50 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted w
22、ithout license from IHS -,-,- INTERNATIONAL STANDARDISO 7787-2:2000(E) ISO 2000 All rights reserved1 Dental rotary instruments Cutters Part 2: Carbide laboratory cutters 1Scope This part of ISO 7787 specifies the dimensional and other characteristics for the 11 most common carbide cutters, which are
23、 predominantly used in the dental laboratory. NOTESteel laboratory cutters are specified in ISO 7787-1; carbide laboratory cutters for milling machines are specified in ISO 7787-3; miniature carbide laboratory cutters are specified in ISO 7787-4. 2Normative references The following normative documen
24、ts contain provisions which, through reference in this text, constitute provisions of this part of ISO 7787. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 7787 are encouraged to invest
25、igate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1797-1, Dental ro
26、tary instruments Shanks Part 1: Shanks made of metals. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection. ISO 6360-1, Dental rotary instruments Number coding system Part 1: General characteristics
27、. ISO 6360-2, Dental rotary instruments Number coding system Part 2: Shape and specific characteristics. ISO 8325, Dental rotary instruments Test methods. 3Classification Dental laboratory cutters are classified according to the material used for the working part, as steel laboratory cutters or carb
28、ide laboratory cutters. Steel laboratory cutters are specified in ISO 7787-1. This part of ISO 7787 as well as ISO 7787-3 and ISO 7787-4 cover carbide laboratory cutters. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards
29、 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) 2 ISO 2000 All rights reserved 4Symbols For the purposes of this part of ISO 7787, the following symbols apply. ddiameter of working part, head diameter; lle
30、ngth of working part, head length; ?angle of working part. 5Requirements 5.1Materials 5.1.1Working part The working part shall be made of tungsten carbide. The selection of the type of tungsten carbide and its treatment are at the discretion of the manufacturer. 5.1.2Shank The material of the shank
31、shall comply with ISO 1797-1. 5.2Shapes The shapes of the working part shall be as specified in Figures 1 to 11. Variations of the shapes are permitted within the limited dimensions and the descriptions used in the subclause titles. Testing shall be carried out in accordance with 6.1. 5.3Dimensions
32、and number of blades 5.3.1Working part 5.3.1.1General Dimensions are given in millimetres and angles are given in degrees. The dimensions of the working part shall be as specified in Figures 1 to 11 as appropriate and Tables 1 to 11 as appropriate. The number of blades shall be as specified in Table
33、 12. Testing shall be carried out in accordance with 6.2. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from
34、 IHS -,-,- ISO 7787-2:2000(E) ISO 2000 All rights reserved3 5.3.1.2Spherical, round Figure 1 Table 1 Dimensions dlDesignation of nominal diameter (Nominal size)?0,3?0,25 04043,5 05054,5 06065,5 5.3.1.3Inverted truncated conical Figure 2 Table 2 Dimensions dl?Designation of nominal diameter (Nominal
35、size)?0,3?0,5 06065,58 to 12 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E)
36、 4 ISO 2000 All rights reserved 5.3.1.4Cylindrical (cylinder) Figure 3 Table 3 Dimensions dlDesignation of nominal diameter (Nominal size)?0,3?0,5 060613,0 5.3.1.5Cylindrical domed (hemispherical/cylindrical) Figure 4 Table 4 Dimensions dlDesignation of nominal diameter (Nominal size)?0,3?0,5 060613
37、,0 070713,0 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) ISO 2000 All rig
38、hts reserved5 5.3.1.6Truncated conical, domed Figure 5 Table 5 Dimensions dl?Designation of nominal iameter (Nominal size)?0,3?0,5 04048,0 050510,0 060611,0 070713,0 14 to 18 5.3.1.7Rounded cone (truncated conical) Figure 6 Table 6 Dimensions dl?Designation of nominal dameter (Nominal size)?0,3?0,5
39、040413,0 0505130 060613,0 070714,0 10 to 14 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO
40、 7787-2:2000(E) 6 ISO 2000 All rights reserved 5.3.1.8Bud slender (ogivo/ellipsoidal, long) Figure 7 Table 7 Dimensions dlDesignation of nominal diameter (Nominal size)?0,3?0,5 050510,0 060612,0 5.3.1.9Paraboloidal Figure 8 Table 8 Dimensions dlDesignation of nominal diameter (Nominal size)?0,3?0,5
41、060614,0 070714,0 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) ISO 2000 A
42、ll rights reserved7 5.3.1.10Cone (truncated conical) Figure 9 Table 9 Dimensions dl?Designation of nominal diameter (Nominal size)?0,3?0,5 060614,018 to 22 5.3.1.11Egg (longitudinal ellipsoidal) Figure 10 Table 10 Dimensions dlDesignation of nominal diameter (Nominal size)?0,3?0,5 060610,0 Copyright
43、 International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) 8 ISO 2000 All rights reserved 5.3.1.
44、12Pear (hemispherical conical) Figure 11 Table 11 Dimensions dl?Designation of nominal diameter (Nominal size)?0,3?0,5 050510,0 060611,0 070712,0 14 to 28 5.3.2Shank The shank shall be Type 2 as specified in ISO 1797-1. 5.4Toothing The toothing of the instruments in Figures 1 to 11 is shown as examp
45、les only. The selection of toothing is left to the discretion of the manufacturer. For the designation of toothing, see clause 8 and Table 12. Testing shall be carried out in accordance with 6.3. 5.5Run-out The total indicated run-out shall not exceed 0,08 mm. Testing shall be carried out in accorda
46、nce with 6.4. 6Test procedures 6.1Shapes Determine the shapes by using a shadowgraph or measuring the relevant dimensions in accordance with ISO 8325. 6.2Dimensions and number of blades Measure the dimensions in accordance with ISO 8325. Determine the number of blades by visual inspection. Copyright
47、 International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 05:06:50 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7787-2:2000(E) ISO 2000 All rights reserved9 6.3Toothing Determine the type of toothing by visual inspection. 6.4Run-out Determine the run-out in accordance with ISO 8325. The measurement point shall be at the largest di