128-50 Manual And Computer

Overview Since 2003 the ISO 128 standard contains twelve parts, which had been initiated between 1996 and 2003.

It starts with a summary of the general rules for the execution of technical drawings, as well as presenting the structure.

Further it describes basic conventions for lines, views, cuts and Sections, and different types of engineering drawings, such for mechanical engineering and construction in architectural, civil engineering, shipbuilding etc.

128-50 Manual And Computer

It is applicable to both manual and computer-based drawings, but it is not applicable to three-dimensional CAD models.1 The ISO 128 replaced the previous DIN 6 standard about drawings, projections and views, which was first published in 1922, and later updated in 1950 and 1968.

The ISO 128 itself was first published in 1982, contained 15 pages and specified the general principles of presentation to be applied to technical drawings following the orthographic projection methods.2 Several parts of this standard have been updated by individual parts and eventually the last parts and the whole standard as a whole has been withdrawn by the ISO in 2001.

ISO 10578:1992, Technical drawings Tolerancing of orientation and location Projected tolerance zone. 3 General principles The basic types of lines, their designations and dimensions as well as general rules for draughting of lines are specified in ISO 128-20.

The work of preparing International Standards is normally carried out through ISO technical committees.

Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.

International organziations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) in all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISOIEC Directives, Part 3.

Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 of the member bodies casting a vote.

International Standard ISO 128-24 was prepared by Technical Committee ISOTC 10, Technical drawings, product definition and related documentation, Subcommittee SC 1, Basic conventions.

ISO 128 consists of the following parts, under the general title Technical drawings General principles of presentation: Part 20: Basic conventions for lines Part 21: Preparation of lines by CAD systems Part 22: Basic conventions and applications for leader lines and reference lines Part 23: Lines on construction drawings Part 24: Lines on mechanical engineering drawings Part 25: Lines on shipbuilding drawings Part 30: Basic conventions for views Part 31: Additional conventions for views Part 40: Basic conventions for cuts and sections Part 41: Cuts and sections for mechanical engineering drawings Part 50: Basic conventions for representing areas on cuts and sections Part 60: Additional conventions for cuts and sections Annex A of this part of ISO 128 is for information only.

Unless otherwise specified, no part of this 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 the publisher.

For dated references, subsequent amendments to, or revisions of, these publications do not apply.

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 128-20:1996, Technical drawings General principles of presentation Part 20: Basic conventions for lines.

ISO 128-22:1999, Technical drawings General principles of presentation Part 22: Basic conventions and applications for leader lines and reference lines.

ISO 128-30:1), Technical drawings General principles of presentation Part 30: Basic conventions for views.

ISO 128-40:1), Technical drawings General principles of presentation Part 40: Basic conventions for cuts and sections.

ISO 128-50:1), Technical drawings General principles of presentation Part 50: Basic conventions for representing areas on cuts and sections.

ISO 129:1985, Technical drawings Dimensioning General principles, definitions, methods of execution and special indications.

ISO 2203:1973, Technical drawings Conventional representation of gears.

ISO 3040:1990, Technical drawings Dimensioning and tolerancing Cones.

ISO 10135:1994, Technical drawings Simplified representation of moulded, cast and forged parts.

General principles The basic types of lines, their designations and dimensions as well as general rules for draughting of lines are specified in ISO 128-20.

Iso 128-50 Pdf