GB/T 20957.7-2007
Test conditions for precision machining centres.Part 7:Accuracy of a finished test piece (English Version)
- Standard No.
- GB/T 20957.7-2007
- Language
- Chinese, Available in English version
- Release Date
- 2007
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 20957.7-2007
- Scope
- This part specifies the characteristics, dimensions and cutting tests of standard test pieces under finishing conditions, which are used to evaluate the cutting accuracy of machine tools. This part applies to precision machining centers with a linear axis stroke up to 2 000 mm, and precision machining centers with a linear axis stroke greater than 2 000 mm can also be used as a reference.
GB/T 20957.7-2007 Referenced Document
- 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 20957.7-2007 history
- 2007 GB/T 20957.7-2007 Test conditions for precision machining centres.Part 7:Accuracy of a finished test piece
GB/T 20957.7-2007 -All Parts
GB/T 20957.1-2007 Test conditions for precision machining centres.Part 1:Geometric tests for machines with horizontal spindle and with accessory heads(horizontal Z axis)
GB/T 20957.2-2007 Test conditions for machining centres.Part 2:Geometric tests for machines with vertical spindke or universal heads with vertical primary rotary axis(vertical Z-axis)
GB/T 20957.4-2007 Test conditions for precision machining centres.Part 4:Accuracy and repeatability of positioning of linear and rotary axes
GB/T 20957.5-2007 Test conditions of precision machining centres.Part 5:Tests for accuracy and repeatability of positioning of wrk-holding pallets
GB/T 20957.7-2007 Test conditions for precision machining centres.Part 7:Accuracy of a finished test piece