标准编号:	GB/T 38023-2019
中文名称:	机械手表机心零部件的精饰要求
英文名称:	Finishing requirements for parts and assemblies of the mechanical watch movements
中标分类:	Y11    钟表
行业分类:	GB    国家标准
ICS分类:	39.040.10 39.040.10    手表 39.040.10
发布机构:	国家市场监督管理总局 国家标准化管理委员会
发布日期:	2019-08-30
实施日期:	2020-3-1
标准状态:	valid
翻译语言:	英文
文件格式:	PDF
中文字符数:	4000 字
翻译价格(元):	280.0
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard was drafted according to the rules given in GB/T 1.1-2009. This standard was proposed by China National Light Industry Council. This standard is under the jurisdiction of the National Technical Committee 160 on Horology of Standardization Administration of China (SAC/TC 160). Finishing Requirements for Parts and Assemblies of the Mechanical Watch Movements 1 Scope This standard specifies the requirements and inspection methods for the finishing of parts and assemblies of the mechanical watch movements. This standard is applicable to the parts and assemblies of mechanical watches (hereinafter referred to as "parts and assemblies") that have undergone finishing processing. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 10610 Geometrical product specifications(GPS) - Surface texture: Profile method - Rules and procedures for the assessment of surface texture 3 Requirements 3.1 Surface Quality Requirements for Metal Parts and Assemblies Metal parts and assemblies shall be free from surface defects, such as indentations, pits, scratches, burning marks, local highlights after polishing, spots after electroplating and blistering. The surface colors of all parts and assemblies shall be uniform and coordinated. 3.2 Finishing Requirements for Metal Parts and Assemblies 3.2.1 General Provisions Mirror polishing of metal parts and assemblies finishing refers to that the Ra value of surface roughness shall not be greater than 0.05μm; polishing refers to that the Ra value of surface roughness shall not be greater than 0.2μm. As long as the finishing meets the surface roughness requirements, there is no limit to the machining method. 3.2.2 Gear parts 3.2.2.1 The roughness Ra value of the gear tooth shall not be greater than 0.4μm, and the tooth working face of the gear shall be mirror polished. 3.2.2.2 There shall be no sharp points between the outer edge of gear teeth and the plane. 3.2.2.3 The upper and lower surfaces of the gear shall be free from irregular machining lines and be polished. 3.2.2.4 The roughness Ra value of the lower surface of the strip box gear and the upper surface of the strip box cover shall not be greater than 0.4μm, and grinding and sandblasting, etc. are allowed. 3.2.3 Parts of Speed Regulating System 3.2.3.1 The tooth-shaped impact surface of the escapement gear shall be mirror polished and the locking surface shall be polished. 3.2.3.2 The roughness Ra value of the escapement fork mouth and fork head nail working face shall not be greater than 0.4μm. 3.2.3.3 The upper and lower planes of the escapement fork shall be free from irregular machining lines and be polished. 3.2.3.4 The upper plane of the balance wheel shall be polished; the inner circle of the upper plane shall be chamfered and polished; the spokes shall be free from irregular machining lines. 3.2.3.5 The exposed surface of the weight or screw cap of the weight balance wheel shall be polished. 3.2.3.6 The upper and lower planes of the movable outer pile ring and fast & slow needles shall be polished. 3.2.4 Parts of upper dial pin system The surface of non-gear parts shall be flat, and the upper plane shall be polished. 3.2.5 Parts of splint system 3.2.5.1 The surface of splint shall be flat.; the exposed plane, the outer side of the splint, the inner groove and other surfaces shall be free from irregular machining lines. The exposed edges of all splints shall be chamfered and polished. 3.2.5.2 All splints shall be coordinated and have uniform surface texture. 3.2.5.3 Splint gem holes should be chamfered and polished. 3.2.6 Parts of automatic system 3.2.6.1 The gear and splint parts in automatic system shall meet the requirements in 3.2.2 and 3.2.5 respectively.

Foreword I 1 Scope 2 Normative References 3 Requirements 4 Test Methods

ICS 39.040.10 Y 11 中华人民共和国国家标准 GB/T 38023—2019 机械手表机心零部件的精饰要求 Finishing requirements for parts and assemblies of the mechanical watch movements 2019—08—30发布 2020—03—01实施 国家市场监督管理总局 中国国家标准化管理委员会 发布 前言 本标准按照GB/T 1.1—2009给出的规则起草。 本标准由中国轻工业联合会提出。 本标准由全国钟表标准化技术委员会(SAC/TC 160)归口。 机械手表机心零部件的精饰要求 1 范围 本标准规定了机械手表机心零部件精饰外观的要求和检验方法。 本标准适用于经过精饰加工的机械手表机心零部件(以下简称“零部件”)。 2规范性引用文件 下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。 GB/T 10610产品几何技术规范(GPS) 表面结构 轮廓法 评定表面结构的规则和方法 3 要求 3.1 金属零部件表面质量要求 金属零部件不应有表面缺陷，如压痕、凹坑、划痕、烧灼痕、抛光后局部高光以及电镀后化斑和起泡脱落的现象。各零部件表面颜色应均匀一致、协调。 3.2金属零部件精饰要求 3.2.1 总则 金属零部件精饰加工的镜面抛光指表面粗糙度Ra值应不大于0.05 μm；抛光指表面粗糙度Ra值应不大于0.2 μm。 只要精饰加工达到表面粗糙度要求，不限加工方法。 3.2.2轮系类零件 3.2.2.1 轮片齿形粗糙度Ra值应不大于0.4μm，齿轴齿形工作面应镜面抛光。 3.2.2.2轮齿外缘与平面交角不应留有尖角。 3.2.2.3轮片上、下表面应消除不规则加工纹并抛光。 3.2.2.4 条盒轮下表面和条盒盖上表面粗糙度Ra值应不大于0.4 μm，可进行磨射线、喷砂等处理。 3.2.3调速系零件 3.2.3.1 擒纵轮齿形冲面应镜面抛光，锁面应抛光。 3.2.3.2 擒纵叉叉口和叉头钉工作面粗糙度Ra值应不大于0.4 μm。 3.2.3.3 擒纵叉上下平面应消除不规则加工纹并抛光。 3.2.3.4摆轮上平面应抛光；上平面内圆宜倒角并抛光；轮辐应消除不规则加工纹。 3.2.3.5砝码摆轮的砝码或螺钉帽的外露表面应抛光。 3.2.3.6 活动外桩环和快慢针，上下平面应抛光。 3.2.4上条拨针系零件 非齿轮零件表面应平整。上平面应抛光。 3.2.5夹板系零件 3.2.5.1 夹板表面应平整；外露平面、夹板外侧面、内部槽形等表面应消除不规则加工纹；所有夹板外露边缘应倒角并抛光。 3.2.5.2各夹板整体应协调、表面纹理均匀一致。 3.2.5.3 夹板宝石孔宜倒角抛光。 3.2.6 自动系零件 3.2.6.1 自动系中的轮系类和夹板类零件应分别符合3.2.2和3.2.5中的要求。 3.2.6.2 自动锤表面应平整，上下平面应消除不规则加工纹，锤边外圆应倒角并抛光，其上平面和倒角可进行磨射线、喷砂等处理。 3.2.6.3 自动锤轴承外露的上表面应抛光。 3.2.7 螺钉 3.2.7.1 螺钉帽上平面应镜面抛光，螺钉帽外圆宜进行倒角并抛光。 3.2.7.2 螺钉螺纹尾端面应平整。 3.2.8 印字盘 3.2.8.1 印字盘(如日历环、周历盘、月相盘等)的印字应清晰、饱满、牢度好。不应有断道、粗细不均以及字型、数字棱角明显短缺。不应出现字体拉丝、变形以及露白点等缺陷。 3.2.8.2字盘喷漆色泽应均匀，漆面应光滑平整。不应有变色、泛黄、掉皮、手印、粘丝、漆渣或其他杂物。 3.2.9 附加机构零件 3.2.9.1 附加机构中的轮系类和夹板类零件应分别符合3.2.2和3.2.5中的要求。 3.2.9.2杆类零件上表面应抛光，且表面平整，外形线条流畅。 4检验方法 4.1 检验条件 除有特殊要求外，检验的环境温度为18℃～25℃，在整个检验过程中温度波动不大于2℃，相对湿度不大于70％。 4.2表面装饰外观 零部件表面装饰外观在维持照度值不低于2 000 lx的照明条件下，距检验者明视距离处进行检查，齿形应在满足检验要求的放大镜下检查。 注：正常视力观察者的明视距离约25 cm，近视或远视情况下明视距离会减小或增大。 4.3表面粗糙度 表面粗糙度采用粗糙度样块比对检查或用表面粗糙度测量仪测量，操作方法应符合GB/T 10610的规定。