GB/T 21947-2008 Active National standards

GB/T 21947-2008 Numerically milling machines for special screws— Testing of the accuracy

GB/T 21947-2008 Numerically milling machines for special screws— Testing of the accuracy

Publish Date: 2008-06-03 Implement Date: 2009-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21947-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Geared and threaded machining machines

ICS Name: CNC machine tools

Publish Date: 2008-06-03

Implement Date: 2009-01-01

Pages: 14 pages

Scope

This standard specifies the requirements and methods for inspecting the geometric accuracy and working accuracy of CNC special-shaped screw milling machines (hereinafter referred to as "machines"). This standard applies to CNC special-shaped screw milling machines with a maximum milling diameter of up to 400 mm.

Development Information

Word Count: 24 Thousand words Pages: 14 pages

Referenced Standards

GB/T 17421.1-1998 Test code for machine tools—Part 1:Geometric accuracy of machines operating under no-load or finishing conditions GB/T 17421.2-2000 Test code for machine tools—Part 2:Determination of accuracy and repeatability of positioning numerically controlled axes

Related Standards

GB/T 12177-1990 Replaced

GB/T 12177-1990 Numerical control of machines—NC processor output— Logical structure

Publish Date: 1990-01-04

GB/T 12646-1990 Active

GB/T 12646-1990 Numerical control of machines—NC processor input—Basic part program reference language

Publish Date: 1990-12-28

GB/T 3168-1993 Active

GB/T 3168-1993 Numerical control of machines—Symbols

Publish Date: 1993-07-21

GB/T 14660-1993 Replaced

GB/T 14660-1993 NC jig boring machine—Testing of the accuracy

Publish Date: 1993-10-15

GB/T 16462-1996 Abolished

GB/T 16462-1996 Numerically controlled turning machines—Testing of the accuracy

Publish Date: 1996-07-05

GB/T 8129-1997 Replaced

GB/T 8129-1997 Industrial automation systems—Numerical control of machines—Vocabulary

Publish Date: 1997-09-02