JB/T 54833-1999
Universal Boring Head - Product Quality Grading
万能镗头 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级评定 → 4 质量等级 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Quality Grade Assessment → 4 Quality Grades → Annex A
Scope
This standard specifies the quality grades, evaluation, and requirements for universal boring head products. This standard applies to the quality grade classification of universal boring head products produced in batches.
本标准规定了万能镗头产品的质量等级及其评定和要求。本标准适用于成批生产的万能镗头产品的质量等级划分。
Normative References
Keywords
Application Summary AI generated
Manufacturing companies use this standard to evaluate and grade the quality of universal boring heads into qualified, first-grade, and premium-grade levels. It serves as a basis for product quality assessment, classification, and pricing, helping to improve the overall quality of machine tool accessories.
机械制造企业使用该标准对万能镗头进行质量等级评定，包括合格品、一等品和优等品。该标准为产品质量考核、分等定级和优质优价提供了依据，有助于提升机床附件产品的整体质量水平。
AI Summary AI generated
This standard defines quality grades for universal boring head products, including qualified, first-grade, and premium-grade levels, with specific technical requirements such as accuracy reserve, heat treatment hardness pass rate, main part inspection pass rate, and cleanliness limits. It applies to batch-produced universal boring heads and provides a basis for product quality assessment and classification.
本标准规定了万能镗头产品的质量等级划分，包括合格品、一等品和优等品，并明确了各等级的技术要求，如精度储备量、热处理硬度合格率、主要零件抽查合格率及清洁度限值。标准适用于成批生产的万能镗头，为产品质量考核和分等定级提供依据。
Key Sentences extracted from text
本标准规定了万能镗头产品的质量等级及其评定和要求。
万能镗头产品分为合格品、一等品和优等品三个质量等级。
主要零件热处理关键技术指标（硬度）合格率不低于90%。
精度应有70%的项目有20%的精度储备量。
清洁度限值压缩20%。
This standard specifies the quality grades, evaluation, and requirements for universal boring head products.
Universal boring head products are divided into three quality grades: qualified product, first-grade product, and premium-grade product.
The pass rate of key technical indicators (hardness) for heat treatment of main parts shall not be less than 90%.
70% of the accuracy items shall have a 20% accuracy reserve.
The cleanliness limit is reduced by 20%.
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.