GB/T 12177-1990
Replaced
GB/T 21945-2008
Active
National standards
GB/T 21945-2008 Numerical control sector gear shaping machines—Testing of the accuracy
GB/T 21945-2008 Numerical control sector gear shaping machines—Testing of the accuracy
Basic Information
Standard Code:
GB/T 21945-2008
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:
12 pages
Scope
This standard specifies the requirements and methods for inspecting the geometric accuracy and working accuracy of CNC fan-shaped gear shaping machines (hereinafter referred to as "machine tools"). This standard applies to CNC fan-shaped gear shaping machines with a maximum workpiece diameter of up to 200 mm.
Development Information
Referenced Standards
GB/T 8170-1987 Rules for rounding off of numberical values
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 12646-1990
Active
GB/T 12646-1990 Numerical control of machines—NC processor input—Basic part program reference language
GB/T 3168-1993
Active
GB/T 3168-1993 Numerical control of machines—Symbols
GB/T 14660-1993
Replaced
GB/T 14660-1993 NC jig boring machine—Testing of the accuracy
GB/T 16462-1996
Abolished
GB/T 16462-1996 Numerically controlled turning machines—Testing of the accuracy
GB/T 8129-1997
Replaced