JB/T 54472-1999
Rotary Table - Product Quality Grading
回转工作台 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级 Foreword → 1 Scope → 2 Normative References → 3 Quality Grades
Scope
This standard specifies the technical performance requirements for qualified products, first-grade products, and premium products of rotary tables (hereinafter referred to as tables). This standard is applicable to the classification of product quality grades of rotary tables.
本标准规定了回转工作台（以下简称转台）的合格品、一等品、优等品的技术性能要求。本标准适用于对转台产品质量等级的划分。
Normative References
Keywords
Application Summary AI generated
Manufacturers of rotary tables, quality inspection agencies, and the machine tool accessories industry use this standard. It is used to evaluate and classify the quality grades of rotary table products, including qualified, first-grade, and premium grades. This standard is important for ensuring product quality, promoting higher prices for better quality, and facilitating quality assessment within the industry.
该标准由回转工作台的生产企业、质量检验机构以及机床附件行业使用。用于对回转工作台产品进行质量等级评定，包括合格品、一等品和优等品的划分。它对于确保产品质量、促进优质优价以及行业内的质量考核具有重要意义。
AI Summary AI generated
This standard JB/T 54472-1999 specifies the quality grading requirements for rotary table products, classifying them into three grades: qualified, first-grade, and premium. It covers technical performance requirements including load torque, part hardness, processing quality pass rate, accuracy reserve, and spindle taper hole contact ratio. Different grades have varying requirements for accuracy, heat treatment qualification rate, and sampling pass rate, with premium grade having the highest standards. The standard is used for quality assessment and grade evaluation of rotary tables.
本标准JB/T 54472-1999规定了回转工作台产品的质量分等要求，将产品分为合格品、一等品和优等品三个等级。标准涵盖了技术性能要求，包括承载力矩、零件硬度、加工质量合格率、精度储备量、主轴锥孔接触比等关键指标。各等级对精度、热处理合格率、抽查合格率等有不同要求，优等品要求最高。该标准适用于回转工作台的质量考核和等级评定。
Key Sentences extracted from text
本标准规定了回转工作台（以下简称转台）的合格品、一等品、优等品的技术性能要求。
锁紧后转台台面的承载力矩应按表1规定。
主要零件热处理部位的关键技术指标（硬度、金相组织等）合格率不低于90%。
精度应有70%的项目有20%的精度储备量（含精度储备量为10%的“总分度误差”项）。
主轴锥孔涂色检验长度方向接触比值不低于75%，且应靠近大端。
This standard specifies the technical performance requirements for qualified products, first-grade products, and premium products of rotary tables (hereinafter referred to as tables).
The load torque on the table surface after locking shall be as specified in Table 1.
The qualification rate of key technical indicators (hardness, metallographic structure, etc.) for heat-treated parts of main components shall not be less than 90%.
70% of the accuracy items shall have an accuracy reserve of 20% (including the 'total indexing error' item with an accuracy reserve of 10%).
The contact ratio in the length direction of the spindle taper hole by color coating inspection shall not be less than 75%, and it should be near the large end.
Standard Timeline
Changes from replaced version:
- 对原标准作了编辑性修改，主要技术内容未变
- Editorial modifications were made to the original standard, with no changes to the main technical content.