JB/T 54871-1999
Counterbores with Plain Blanks - Product Quality Grading
平底锪钻 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, RQL values for periodic stability assessment, classification of nonconformities, and life test for counterbores with plain blanks when evaluating quality grades according to JB/T 54854-1999 'General Rules for Product Quality Grading of Cutting Tools'. This standard applies to the quality grade evaluation and periodic stability assessment of counterbores with plain blanks produced in batches according to GB/T 4260~4262 and GB/T 4266.
本标准规定了平底锪钻在依据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、不合格分类及寿命试验。本标准适用于按GB/T 4260~4262、GB/T 4266 成批生产的平底锪钻的质量等级评定和周期稳定性考核。
Normative References
Keywords
Application Summary AI generated
Tool manufacturers and quality inspection agencies use this standard to evaluate the quality grade and periodic stability of counterbores with plain blanks. It ensures products meet different quality levels (qualified, first-class, premium) by setting AQL and RQL values and classifying nonconformities. This standard is crucial for ensuring the reliability and consistency of counterbores.
刀具制造商和质检机构使用本标准来对平底锪钻进行质量等级评定和周期稳定性考核。它通过设定AQL和RQL值以及不合格分类，确保产品符合不同等级（合格品、一等品、优等品）的质量要求。该标准对于保证平底锪钻的可靠性和一致性至关重要。
AI Summary AI generated
This standard JB/T 54871-1999 is a machinery industry standard for quality grading of counterbores with plain blanks, replacing JB/T 54871-93. It specifies AQL values for quality grade evaluation, RQL values for periodic stability assessment, classification of nonconformities, and life test according to JB/T 54854-1999. It applies to counterbores produced in batches per GB/T 4260~4262 and GB/T 4266. Products are classified into three grades: qualified, first-class, and premium. Detailed nonconformity items (Type B in three groups and Type C) and their judgment criteria are listed. No life test is specified.
本标准JB/T 54871-1999是平底锪钻产品质量分等的机械行业标准，代替JB/T 54871-93。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、不合格分类及寿命试验。适用于按GB/T 4260~4262和GB/T 4266成批生产的平底锪钻。标准将产品分为合格品、一等品和优等品三个等级，并详细列出了B类不合格（分三组）和C类不合格的具体项目及判定依据。目前暂不规定寿命试验。
Key Sentences extracted from text
本标准规定了平底锪钻在依据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、不合格分类及寿命试验。
本标准适用于按GB/T 4260~4262、GB/T 4266 成批生产的平底锪钻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。
平底锪钻暂不规定寿命试验。
This standard specifies the AQL values for quality grade evaluation, RQL values for periodic stability assessment, classification of nonconformities, and life test for counterbores with plain blanks when evaluating quality grades according to JB/T 54854-1999 'General Rules for Product Quality Grading of Cutting Tools'.
This standard applies to the quality grade evaluation and periodic stability assessment of counterbores with plain blanks produced in batches according to GB/T 4260~4262 and GB/T 4266.
The specified AQL values are given in Table 1.
The specified RQL values are given in Table 2.
No life test is specified for counterbores with plain blanks at present.
Standard Timeline
Changes from replaced version:
- 本标准与JB/T 54871—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 54871-93, only re-edited according to relevant regulations.