JB/T 54878-1999
Taper Reamers - Product Quality Grading
圆锥铰刀 产品质量分等
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, the RQL values for periodic stability assessment, and the classification of nonconformities for taper reamers when evaluated in accordance with JB/T 54854-1999 'General Rules for Product Quality Grading of Cutting Tools'. This standard is applicable to the quality grade evaluation and periodic stability assessment of taper reamers produced in batches according to GB/T 1139, GB/T 1140, and GB/T 4250.
本标准规定了圆锥铰刀在依据JB/T 54854—1999《刀具 产品质量分等通则》进行质量等级评定时的AQL 值、周期稳定性考核时的RQL 值和不合格分类。本标准适用于按GB/T 1139、GB/T 1140、GB/T 4250 成批生产的圆锥铰刀的质量等级评定和周期稳定性考核。
Normative References
Keywords
Application Summary AI generated
Manufacturers of taper reamers use this standard to evaluate product quality grades and conduct periodic stability assessments. Quality inspection departments and customers rely on the AQL and RQL values specified herein to determine product conformity and assign quality grades (qualified, first-class, premium). This standard is crucial for ensuring consistent quality of taper reamers and advancing the overall level of the cutting tool industry.
圆锥铰刀的生产企业使用本标准来对其产品进行质量等级评定和周期稳定性考核。质检部门和用户依据本标准中的AQL和RQL值判断产品是否合格，并确定其质量等级（合格品、一等品、优等品）。本标准对于保证圆锥铰刀的质量一致性、提升刀具行业整体水平具有重要意义。
AI Summary AI generated
This standard JB/T 54878-1999 is a machinery industry standard for product quality grading of taper reamers, replacing JB/T 54878-93. It specifies AQL values for quality grade evaluation, RQL values for periodic stability assessment, and classification of nonconformities according to JB/T 54854-1999. It applies to taper reamers produced in batches per GB/T 1139, GB/T 1140, and GB/T 4250. Nonconformities are classified into Class B (Group I and III) and Class C, with different AQL and RQL values for qualified, first-class, and premium grades. Specific nonconformity items and their judgment criteria are listed, but no life test is specified.
本标准JB/T 54878-1999是关于圆锥铰刀产品质量分等的机械行业标准，替代了JB/T 54878-93。标准规定了依据JB/T 54854-1999进行质量等级评定时所需的AQL值、周期稳定性考核的RQL值以及不合格分类。适用于按GB/T 1139、GB/T 1140和GB/T 4250成批生产的圆锥铰刀。标准将不合格分为B类（Ⅰ组和Ⅲ组）和C类，并针对合格品、一等品、优等品分别给出了不同的AQL和RQL值。标准还列出了具体的不合格项目及其判定依据，但暂不规定寿命试验。
Key Sentences extracted from text
本标准规定了圆锥铰刀在依据JB/T 54854—1999《刀具 产品质量分等通则》进行质量等级评定时的AQL 值、周期稳定性考核时的RQL 值和不合格分类。
本标准适用于按GB/T 1139、GB/T 1140、GB/T 4250 成批生产的圆锥铰刀的质量等级评定和周期稳定性考核。
AQL 的指定值按表1。
RQL 的指定值按表2。
圆锥铰刀暂不规定寿命试验。
This standard specifies the AQL values for quality grade evaluation, the RQL values for periodic stability assessment, and the classification of nonconformities for taper reamers when evaluated in accordance with JB/T 54854-1999 'General Rules for Product Quality Grading of Cutting Tools'.
This standard is applicable to the quality grade evaluation and periodic stability assessment of taper reamers produced in batches according to GB/T 1139, GB/T 1140, and GB/T 4250.
The specified AQL values are given in Table 1.
The specified RQL values are given in Table 2.
No life test is specified for taper reamers at present.
Standard Timeline
Changes from replaced version:
- 本标准与JB/T 54878—93 的技术内容一致，仅按有关规定重新进行了编辑。
- The technical content of this standard is consistent with JB/T 54878-93, only re-edited according to relevant regulations.