JB/T 9926.1-2019
Internal thread grinding machines - Part 1: Inspection of accuracy (English Version)

Standard No.

JB/T 9926.1-2019

Language

Chinese, Available in English version

Release Date

2020

Published By

Professional Standard - Machinery

Latest

JB/T 9926.1-2019

Replace

JB/T 9926.1-1999

Scope

This part specifies the inspection methods and corresponding tolerances for the geometric accuracy, working accuracy, axis positioning accuracy and repeat positioning accuracy of ordinary precision-level internal thread grinders. This section applies to internal thread grinders with a maximum grinding diameter of 200mm to 400mm.

JB/T 9926.1-2019 history

• 2020 JB/T 9926.1-2019 Internal thread grinding machines - Part 1: Inspection of accuracy
• 1999 JB/T 9926.1-1999 Internal thread grinder Accuracy inspection