JB/T 54891-1999
Pre-grinding Gear Hobs - Product Quality Grading
磨前齿轮滚刀 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, RQL values for periodic stability assessment, classification of nonconformities, and life test for pre-grinding gear hobs when evaluated according to JB/T 54854-1999 'Tools - General Rules for Product Quality Grading'. This standard is applicable to the quality grade evaluation and periodic stability assessment of pre-grinding gear hobs produced in batches according to JB/T 7968.1~7968.2.
本标准规定了磨前齿轮滚刀在依据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、不合格分类及寿命试验。本标准适用于按JB/T 7968.1~7968.2 成批生产的磨前齿轮滚刀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 pre-grinding gear hobs. It sets AQL and RQL values, defines nonconformity classifications, and specifies life test requirements to ensure products meet different quality levels (qualified, first-class, premium). This standard is crucial for ensuring the reliability and consistency of gear cutting tools.
刀具制造商和质检机构使用本标准来对磨前齿轮滚刀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、明确不合格分类及寿命试验要求，确保产品符合不同等级（合格品、一等品、优等品）的质量标准。该标准对于保证齿轮加工刀具的可靠性和一致性至关重要。
AI Summary AI generated
JB/T 54891-1999 specifies quality grading requirements for pre-grinding gear hobs, including AQL and RQL values, nonconformity classification (three groups of Class B and Class C), and life test methods. It applies to hobs produced per JB/T 7968 series. Tables 1-3 define acceptable quality levels for different grades (qualified, first-class, premium), while the life test specifies cutting conditions, criteria, and average life targets. This standard replaces JB/T 54891-93 with identical technical content but editorial updates.
本标准JB/T 54891-1999规定了磨前齿轮滚刀的质量分等要求，包括AQL和RQL值、不合格分类（B类三组和C类）及寿命试验方法。适用于按JB/T 7968系列标准生产的滚刀。通过表1-3明确不同等级（合格品、一等品、优等品）的合格质量水平，寿命试验则规定了切削条件、判据和平均寿命指标。该标准替代了JB/T 54891-93，内容一致仅重新编辑。
Key Sentences extracted from text
本标准规定了磨前齿轮滚刀在依据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、不合格分类及寿命试验。
本标准适用于按JB/T 7968.1~7968.2 成批生产的磨前齿轮滚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。
不合格分类及分组按表3。
This standard specifies the AQL values for quality grade evaluation, RQL values for periodic stability assessment, classification of nonconformities, and life test for pre-grinding gear hobs when evaluated according to JB/T 54854-1999 'Tools - General Rules for Product Quality Grading'.
This standard is applicable to the quality grade evaluation and periodic stability assessment of pre-grinding gear hobs produced in batches according to JB/T 7968.1~7968.2.
The specified AQL values are given in Table 1.
The specified RQL values are given in Table 2.
The classification and grouping of nonconformities are given in Table 3.
Standard Timeline
Changes from replaced version:
- 本标准与JB/T 54891—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 54891-93, only re-edited according to relevant regulations.