JB/T 54884-1999

Thread Rolling Dies - Product Quality Grading (Internal Use)

滚丝轮 产品质量分等（内部使用）

Standard Type
JB/T
ICS
N/A
CCS
J41
Status
N/A
Issue Date
1999-12-30
Implementation
2000-06-01
Centralized Committee
全国刀具标准化技术委员会 / National Tool Standardization Technical Committee
Issuing Authority
国家机械工业局 / State Bureau of Machinery Industry

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 thread rolling dies when evaluated according to JB/T 54854. This standard applies to the quality grade evaluation and periodic stability assessment of thread rolling dies produced in batches according to GB/T 971.

本标准规定了滚丝轮在依据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 值及不合格分类。本标准适用于按GB/T 971 成批生产的滚丝轮的质量等级评定和周期稳定性考核。

Normative References

GB/T 971-1994 JB/T 54854-1999

Keywords

滚丝轮 (thread rolling dies) 产品质量分等 (product quality grading) AQL (AQL) RQL (RQL) 不合格分类 (nonconformity classification) 周期稳定性 (periodic stability) 内部使用 (internal use)

Application Summary AI generated

Tool manufacturers and quality inspection agencies use this standard to evaluate the quality grade and periodic stability of batch-produced thread rolling dies. By defining AQL and RQL values and classifying nonconformities, it ensures consistent product quality, which is critical for reliable thread forming in mechanical processing.

该标准由刀具制造企业和质量检验机构使用，用于对成批生产的滚丝轮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，确保滚丝轮产品符合统一的质量要求，从而保障机械加工中的螺纹成型质量。

AI Summary AI generated

This standard JB/T 54884-1999 specifies AQL values, RQL values, and nonconformity classification for quality grading of thread rolling dies, applicable to batch-produced dies per GB/T 971. Nonconformities are divided into Class B (Group I and II) and Class C, with different AQL and RQL values for qualified, first-grade, and premium products. The standard also states that no life test is specified for thread rolling dies.

本标准JB/T 54884-1999规定了滚丝轮产品质量分等的AQL值、RQL值及不合格分类，适用于按GB/T 971成批生产的滚丝轮。标准将不合格分为B类（Ⅰ组和Ⅱ组）和C类，并针对合格品、一等品和优等品分别设定了不同的AQL和RQL值。此外，标准明确滚丝轮不规定寿命试验。

Key Sentences extracted from text

1.

本标准规定了滚丝轮在依据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 值及不合格分类。

2.

本标准适用于按GB/T 971 成批生产的滚丝轮的质量等级评定和周期稳定性考核。

3.

AQL 的指定值由表1 给出。

4.

RQL 的指定值由表2 给出。

5.

不合格分类及分组由表3 给出。

7.

This standard specifies the AQL values for quality grade evaluation, the RQL values for periodic stability assessment, and the classification of nonconformities for thread rolling dies when evaluated according to JB/T 54854.

8.

This standard applies to the quality grade evaluation and periodic stability assessment of thread rolling dies produced in batches according to GB/T 971.

9.

The specified AQL values are given in Table 1.

10.

The specified RQL values are given in Table 2.

11.

The classification and grouping of nonconformities are given in Table 3.

Standard Timeline

replaces JB/T 54884-93

Changes from replaced version:

  • 根据相应的滚丝轮产品标准作了修改
  • 在B类不合格Ⅰ组中，增加了对一副滚丝轮中径差的评定项目
  • 取消了对中径D2的评定项目
  • Modified according to the corresponding thread rolling die product standard
  • Added an assessment item for the pitch diameter difference of a pair of thread rolling dies in Class B nonconformity Group I
  • Removed the assessment item for pitch diameter D2
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.