JB/T 54883-1999
Round Dies - Product Quality Grading (Internal Use)
圆板牙 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 assessment, RQL values for periodic stability assessment, classification of nonconformities, and life test for round dies when conducting quality grade assessment in accordance with JB/T 54854. This standard applies to the quality grade assessment and periodic stability assessment of round dies produced in batches according to GB/T 970.1~970.2.
本标准规定了圆板牙在依据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 970.1~970.2 成批生产的圆板牙的质量等级评定和周期稳定性考核。
Normative References
Keywords
Application Summary AI generated
Quality inspection departments of round die manufacturers use this standard to assess quality grades and perform periodic stability assessments on batch-produced round dies. By specifying AQL values, RQL values, nonconformity classifications, and life tests, it ensures products meet different quality levels (qualified, first-class, premium). This standard is important for maintaining consistency and reliability in round die products.
圆板牙生产企业的质量检验部门使用本标准，对成批生产的圆板牙进行质量等级评定和周期稳定性考核。通过规定AQL值、RQL值、不合格分类和寿命试验，确保产品符合不同等级（合格品、一等品、优等品）的质量要求。本标准对于保证圆板牙产品的质量一致性和可靠性具有重要意义。
AI Summary AI generated
This standard specifies technical requirements for quality grading of round dies, including AQL values, RQL values, classification of nonconformities, and life tests. It applies to round dies produced in batches according to GB/T 970.1~970.2. Products are classified into three grades: qualified, first-class, and premium. Detailed grouping of class B and C nonconformities is provided, along with life indices for different grades. This standard replaces JB/T 54883-93, with adjustments to certain assessment items and life values.
本标准规定了圆板牙产品质量分等的技术要求，包括AQL值、RQL值、不合格分类及寿命试验。适用于按GB/T 970.1~970.2成批生产的圆板牙。标准将产品分为合格品、一等品和优等品三个等级，对B类和C类不合格进行了详细分组，并规定了不同等级产品的寿命指标。本标准替代JB/T 54883-93，对部分评定项目和寿命值进行了调整。
Key Sentences extracted from text
本标准规定了圆板牙在依据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 970.1~970.2 成批生产的圆板牙的质量等级评定和周期稳定性考核。
不合格分类及分组由表3 给出。
寿命判据：a) 螺纹环规通端不能通过；b) 螺纹环规止端连续通过20P；c) 试件螺纹表面粗糙度超过下列规定：P≤2mm，Rz≤50μm；P>2mm，Rz≤25μm；d) 出现崩刃：CH=0.60P（P≤1mm）, CH=0.5P（P>1~2mm）, CH=0.40P（P>2mm）,或其它不能正常切削的现象。
寿命指标由表4 给出。
This standard specifies the AQL values for quality grade assessment, RQL values for periodic stability assessment, classification of nonconformities, and life test for round dies when conducting quality grade assessment in accordance with JB/T 54854.
This standard applies to the quality grade assessment and periodic stability assessment of round dies produced in batches according to GB/T 970.1~970.2.
The classification and grouping of nonconformities are given in Table 3.
Life criteria: a) The GO thread ring gauge cannot pass; b) The NO-GO thread ring gauge passes continuously for 20P; c) The thread surface roughness of the test piece exceeds the following: P≤2mm, Rz≤50μm; P>2mm, Rz≤25μm; d) Chipping occurs: CH=0.60P (P≤1mm), CH=0.5P (P>1~2mm), CH=0.40P (P>2mm), or other phenomena that prevent normal cutting.
The life indices are given in Table 4.
Standard Timeline
Changes from replaced version:
- 根据相应的圆板牙产品标准作了修改
- 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
- 对寿命试验的平均寿命值作了调整
- Modified according to the corresponding round die product standard
- Adjusted individual assessment items from Class B nonconformity Group I to Group II
- Adjusted the average life values in the life test