JB/T 54882-1999
Machine Taps - Product Quality Grading (Internal Use)
机用丝锥 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 AQL 的指定值 → 4 RQL 的指定值 → 5 不合格分类及分组 → 6 寿命试验 Foreword → 1 Scope → 2 Normative References → 3 Specified AQL Values → 4 Specified RQL Values → 5 Classification and Grouping of Nonconformities → 6 Life Test
Scope
This standard specifies the AQL values for quality grade evaluation, RQL values for periodic stability assessment, nonconformity classification, and life test for machine taps and nut taps when evaluated according to JB/T 54854. This standard applies to the quality grade evaluation and periodic stability assessment of machine taps and nut taps produced in batches according to GB/T 967~969, GB/T 3464.1~3464.3, and JB/T 8786.
本标准规定了机用丝锥和螺母丝锥在依据JB/T 54854 进行质量等级评定时的AQL 值、周期稳定性考核时的RQL 值、不合格分类及寿命试验。本标准适用于按GB/T 967~969、GB/T 3464.1~3464.3、JB/T 8786 成批生产的机用丝锥和螺母丝锥的质量等级评定和周期稳定性考核。
Normative References
Keywords
Application Summary AI generated
Quality inspectors and tool manufacturers in the machinery industry use this standard to grade the quality of machine taps and nut taps. They apply the specified AQL and RQL values for sampling inspection and periodic stability assessment to ensure products meet required quality levels. This standard is crucial for ensuring the reliability and consistency of tap products, thereby enhancing quality management in the cutting tool industry.
机械制造行业的质检人员和刀具生产厂家使用本标准来评定机用丝锥和螺母丝锥的质量等级。他们依据本标准中的AQL和RQL值进行抽样检验和周期稳定性考核，确保产品符合规定的质量要求。本标准对于保证丝锥产品的可靠性和一致性至关重要，有助于提升刀具行业的质量管理水平。
AI Summary AI generated
This standard JB/T 54882-1999 specifies quality grading requirements for machine taps and nut taps, including AQL values, RQL values, nonconformity classification, and life tests. It applies to products manufactured in batches according to relevant national and industry standards. Nonconformities are classified into Class B (three groups) and Class C, covering defects such as cracks, surface roughness, dimensional deviations, and hardness. The life test specifies conditions for machine tools, test blanks, cutting parameters, etc., and provides life indices for taps of different diameters. This standard replaces JB/T 54882-93, with adjustments to some nonconformity groupings and RQL values.
本标准JB/T 54882-1999规定了机用丝锥和螺母丝锥的质量分等要求，包括AQL值、RQL值、不合格分类及寿命试验。标准适用于按相关国家标准和行业标准成批生产的产品。不合格分为B类（三组）和C类，涵盖裂纹、表面粗糙度、尺寸超差、硬度等多项指标。寿命试验规定了机床、试坯、切削规范等条件，并给出了不同直径丝锥的寿命指标。本标准替代了JB/T 54882-93，调整了部分不合格分组和RQL值。
Key Sentences extracted from text
本标准规定了机用丝锥和螺母丝锥在依据JB/T 54854 进行质量等级评定时的AQL 值、周期稳定性考核时的RQL 值、不合格分类及寿命试验。
本标准适用于按GB/T 967~969、GB/T 3464.1~3464.3、JB/T 8786 成批生产的机用丝锥和螺母丝锥的质量等级评定和周期稳定性考核。
AQL 的指定值由表1 给出。
RQL 的指定值由表2 给出。
表3 中的B 类不合格Ⅱ组在逐批入库检查时，允许采用特殊检查水平。
This standard specifies the AQL values for quality grade evaluation, RQL values for periodic stability assessment, nonconformity classification, and life test for machine taps and nut taps when evaluated according to JB/T 54854.
This standard applies to the quality grade evaluation and periodic stability assessment of machine taps and nut taps produced in batches according to GB/T 967~969, GB/T 3464.1~3464.3, and JB/T 8786.
The specified AQL values are given in Table 1.
The specified RQL values are given in Table 2.
For Group II of Class B nonconformities in Table 3, special inspection level is permitted during batch incoming inspection.
Standard Timeline
Changes from replaced version:
- 将个别评定项目由B类不合格Ⅰ组调整到B类不合格Ⅱ组
- 对B类不合格Ⅱ组的RQL值作了相应的调整
- 增加了对B类不合格Ⅱ组允许按特殊检查水平的规定
- 本标准包括螺母丝锥的质量分等
- Adjusted some evaluation items from Class B nonconformity Group I to Group II
- Adjusted the RQL values for Class B nonconformity Group II accordingly
- Added provision allowing special inspection level for Class B nonconformity Group II
- This standard includes quality grading for nut taps