標準編號:	GB/T 38023-2019
中文名稱:	機械手表機心零部件的精飾要求
英文名稱:	Finishing requirements for parts and assemblies of the mechanical watch movements
中標分類:	Y11    鐘表
行業分類:	GB    國家標準
ICS分類:	39.040.10 39.040.10    手表 39.040.10
發布機構:	國家市場監督管理總局 國家標準化管理委員會
發布日期:	2019-08-30
實施日期:	2020-3-1
標準狀態:	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數:	4000 字
翻譯價格(元):	280.0
交付時間:	付款后 1 個工作日

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 中華人民共和國國家標準 GB/T 38023—2019 機械手表機心零部件的精飾要求 Finishing requirements for parts and assemblies of the mechanical watch movements 2019—08—30發布 2020—03—01實施 國家市場監督管理總局 中國國家標準化管理委員會 發布 前言 本標準按照GB/T 1.1—2009給出的規則起草。 本標準由中國輕工業聯合會提出。 本標準由全國鐘表標準化技術委員會(SAC/TC 160)歸口。 機械手表機心零部件的精飾要求 1 范圍 本標準規定了機械手表機心零部件精飾外觀的要求和檢驗方法。 本標準適用于經過精飾加工的機械手表機心零部件(以下簡稱“零部件”)。 2規范性引用文件 下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB/T 10610產品幾何技術規范(GPS) 表面結構 輪廓法 評定表面結構的規則和方法 3 要求 3.1 金屬零部件表面質量要求 金屬零部件不應有表面缺陷，如壓痕、凹坑、劃痕、燒灼痕、拋光后局部高光以及電鍍后化斑和起泡脫落的現象。各零部件表面顏色應均勻一致、協調。 3.2金屬零部件精飾要求 3.2.1 總則 金屬零部件精飾加工的鏡面拋光指表面粗糙度Ra值應不大于0.05 μm；拋光指表面粗糙度Ra值應不大于0.2 μm。 只要精飾加工達到表面粗糙度要求，不限加工方法。 3.2.2輪系類零件 3.2.2.1 輪片齒形粗糙度Ra值應不大于0.4μm，齒軸齒形工作面應鏡面拋光。 3.2.2.2輪齒外緣與平面交角不應留有尖角。 3.2.2.3輪片上、下表面應消除不規則加工紋并拋光。 3.2.2.4 條盒輪下表面和條盒蓋上表面粗糙度Ra值應不大于0.4 μm，可進行磨射線、噴砂等處理。 3.2.3調速系零件 3.2.3.1 擒縱輪齒形沖面應鏡面拋光，鎖面應拋光。 3.2.3.2 擒縱叉叉口和叉頭釘工作面粗糙度Ra值應不大于0.4 μm。 3.2.3.3 擒縱叉上下平面應消除不規則加工紋并拋光。 3.2.3.4擺輪上平面應拋光；上平面內圓宜倒角并拋光；輪輻應消除不規則加工紋。 3.2.3.5砝碼擺輪的砝碼或螺釘帽的外露表面應拋光。 3.2.3.6 活動外樁環和快慢針，上下平面應拋光。 3.2.4上條撥針系零件 非齒輪零件表面應平整。上平面應拋光。 3.2.5夾板系零件 3.2.5.1 夾板表面應平整；外露平面、夾板外側面、內部槽形等表面應消除不規則加工紋；所有夾板外露邊緣應倒角并拋光。 3.2.5.2各夾板整體應協調、表面紋理均勻一致。 3.2.5.3 夾板寶石孔宜倒角拋光。 3.2.6 自動系零件 3.2.6.1 自動系中的輪系類和夾板類零件應分別符合3.2.2和3.2.5中的要求。 3.2.6.2 自動錘表面應平整，上下平面應消除不規則加工紋，錘邊外圓應倒角并拋光，其上平面和倒角可進行磨射線、噴砂等處理。 3.2.6.3 自動錘軸承外露的上表面應拋光。 3.2.7 螺釘 3.2.7.1 螺釘帽上平面應鏡面拋光，螺釘帽外圓宜進行倒角并拋光。 3.2.7.2 螺釘螺紋尾端面應平整。 3.2.8 印字盤 3.2.8.1 印字盤(如日歷環、周歷盤、月相盤等)的印字應清晰、飽滿、牢度好。不應有斷道、粗細不均以及字型、數字棱角明顯短缺。不應出現字體拉絲、變形以及露白點等缺陷。 3.2.8.2字盤噴漆色澤應均勻，漆面應光滑平整。不應有變色、泛黃、掉皮、手印、粘絲、漆渣或其他雜物。 3.2.9 附加機構零件 3.2.9.1 附加機構中的輪系類和夾板類零件應分別符合3.2.2和3.2.5中的要求。 3.2.9.2桿類零件上表面應拋光，且表面平整，外形線條流暢。 4檢驗方法 4.1 檢驗條件 除有特殊要求外，檢驗的環境溫度為18℃～25℃，在整個檢驗過程中溫度波動不大于2℃，相對濕度不大于70％。 4.2表面裝飾外觀 零部件表面裝飾外觀在維持照度值不低于2 000 lx的照明條件下，距檢驗者明視距離處進行檢查，齒形應在滿足檢驗要求的放大鏡下檢查。 注：正常視力觀察者的明視距離約25 cm，近視或遠視情況下明視距離會減小或增大。 4.3表面粗糙度 表面粗糙度采用粗糙度樣塊比對檢查或用表面粗糙度測量儀測量，操作方法應符合GB/T 10610的規定。