ISO 1057-1973 PDF

Full title and description

Numerical control of machines — Interchangeable punched tape variable block format for positioning and straight‑cut machining. This International Standard defined a variable‑block punched‑tape format (with tabulation and address notation) intended to promote interchangeability of input media for numerically controlled (NC) machines of compatible characteristics.

Abstract

ISO 1057:1973 specified the structure and rules for a variable‑block punched‑tape program format used for positioning and straight‑cut machining on numerically controlled machines. It covered block and word makeup, address and data word conventions, tabulation and block termination, permitted character use and requirements intended to reduce tape length while supporting interoperability between machines with compatible functions. The standard was published in December 1973 and later withdrawn and replaced by a newer format standard.

General information

• Status: Withdrawn (withdrawal stage 95.99).
• Publication date: 1973‑12 (published 1 December 1973; withdrawal effective 1 September 1982).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.20 (Numerical control of machines / NC equipment).
• Edition / version: Edition 1 (1973).
• Number of pages: 10.

Scope

The standard applied to variable‑block punched‑tape input media for positioning and straight‑cut machining on NC machines. It was intended to recommend a set of rules to achieve a practical degree of interchangeability of program media between machines of compatible characteristics (function, capacity, axis configuration and preparatory/miscellaneous/tooling functions), and to inform users and equipment manufacturers about a common program format and coding conventions. The format was compatible with related information‑processing and punched‑tape standards referenced in the document.

Key topics and requirements

• Definition of block and word structure for variable‑block punched tape (including tabulation and addresses).
• Address and data word conventions, including rules for leading/trailing zeros and implied decimal placement to reduce tape length.
• Specification of permitted character sets and compatibility with related ISO information‑processing character and tape standards.
• Requirements for feed and code hole positioning and tape dimensions (to support interchangeability of physical media).
• Guidance about limits of interchangeability — interchange depends on machine functional compatibility, not only tape format.

Typical use and users

Intended users were NC machine tool manufacturers, control‑system designers, NC programmers and technical departments responsible for program exchange and machine interoperability. The format targeted conventional NC applications for positioning and straight‑cut machining where punched‑tape program exchange between compliant machines was required.

Related standards

ISO 1057:1973 was related to and used in conjunction with earlier ISO/R and ISO NC and information‑processing standards (examples cited in the original text include ISO/R 1057:1969 and information‑processing/punched‑tape standards). ISO 1057:1973 was withdrawn and replaced by ISO 6983‑1 (first issued 1982), which consolidated and updated punched‑tape/block‑format and numerical‑control program format requirements. Other related ISO documents in the NC series (ISO 1056, 1058, 1059 and later ISO 6983 parts) also address tape formats, coding of preparatory/miscellaneous functions and related conventions.

Keywords

numerical control, NC, punched tape, variable block format, tape interchangeability, positioning, straight‑cut machining, tape addresses, character set, program format.

FAQ

Q: What is this standard?

A: ISO 1057:1973 is an International Standard that specified a variable‑block punched‑tape program format for numerically controlled machines used for positioning and straight‑cut machining.

Q: What does it cover?

A: It covers block and word makeup, address notation, tabulation and block termination rules, permitted characters and tape dimension/feeding considerations intended to help achieve interchangeability of punched‑tape input media between compatible NC machines.

Q: Who typically uses it?

A: The standard was primarily aimed at NC machine manufacturers, control‑system designers, NC programmers and maintenance/engineering teams involved in program exchange and machine interoperability.

Q: Is it current or superseded?

A: ISO 1057:1973 has been withdrawn (withdrawal effective 1 September 1982) and was superseded by ISO 6983‑1 (1982 and later editions) which provides the updated data/tape format requirements.

Q: Is it part of a series?

A: Yes — it formed part of the family of ISO documents on numerical control and punched‑tape formats (related items include the ISO 10xx series and later ISO 6983 parts that consolidate NC program data formats).

Q: What are the key keywords?

A: Punched tape, variable block, numerical control, NC program format, interchangeability, positioning, straight‑cut machining.