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1、| 25th Feb. 2010 | MK-RT | Tao Chen 1 Threading 螺纹加工螺纹加工螺纹加工螺纹加工 (2) | 25th Feb. 2010 | MK-RT | Tao Chen 2 Schedule目录目录目录目录 ?Basics 基础 ? Principle description of the Pitch螺距的基本定义P3 ? Basic informations about threads螺纹的基本信息P5 ? Type of threads and thread profiles螺纹的类型及牙形P6 ? Tolerancs classes公差等级P8 ?
2、 Main thread functions螺纹的主要功能P11 | 25th Feb. 2010 | MK-RT | Tao Chen 3 Schedule目录目录目录目录 ?Thread production 螺纹加工 with taps 丝锥丝锥丝锥丝锥P16 Tap nomenclature 丝锥专用名词P18 Types of tapping holes 螺纹孔的类型P23 Cutting geometry - form of flutes 切削几何参数-槽形P25 General Tool Dimensions 丝锥的外形尺寸P31 Leads/chamfers 引导部分/倒角P3
3、8 Tolerance classes 公差等级P47 Hand-Tapping with Sets 套装手攻丝锥P50 Proposal for solving cutting problems 对解决切削问题的建议P52 Overview: Thread tap and former range 纵览:丝锥和挤压丝锥的范围P54 with dies 板牙板牙板牙板牙P57 | 25th Feb. 2010 | MK-RT | Tao Chen 4 Basics基础 Unwinding a thread into a inclined plane 将螺纹在一个倾斜平面上展开将螺纹在一个倾斜平
4、面上展开将螺纹在一个倾斜平面上展开将螺纹在一个倾斜平面上展开 Basically every thread is a notch engraved into the circumference of a cylinder on an inclined plane 基本上每个螺纹都可以看成是沿一个倾斜平面 刻在圆柱体表面的凹槽 d x Pitch p螺距 | 25th Feb. 2010 | MK-RT | Tao Chen 5 Principle description of pitch螺距的形成原理螺距的形成原理螺距的形成原理螺距的形成原理 x d p d | 25th Feb. 2010
5、| MK-RT | Tao Chen 6 Pitch and self-locking effect.螺距和自锁现象螺距和自锁现象螺距和自锁现象螺距和自锁现象 Good self-locking 较好的自锁较好的自锁较好的自锁较好的自锁 Regular pitch thread一般螺距螺纹 Small or no self-locking 很小或没有自锁性能很小或没有自锁性能很小或没有自锁性能很小或没有自锁性能 Triple-start thread三头螺纹 Pitch螺距 Strong self-locking 很强的自锁很强的自锁很强的自锁很强的自锁 Fine pitch thread 细
6、牙螺纹 | 25th Feb. 2010 | MK-RT | Tao Chen 7 Types of threads螺纹的类型 Fastening thread 紧固螺纹紧固螺纹紧固螺纹紧固螺纹 Running thread 传动螺纹传动螺纹传动螺纹传动螺纹 Nut 螺母 Bearing 轴承 Hand- wheel 手轮 | 25th Feb. 2010 | MK-RT | Tao Chen 8 d1 d d2 p p = Thread-Pitch 螺距螺距螺距螺距 = Thread-Flank angle 牙形角牙形角牙形角牙形角 d = Thread-Nominal diameter 大
7、径大径大径大径 d2= Thread-pitch diamete中径中径中径中径 d1= Thread-core diameter小径小径小径小径 Principle items of thread nomenclature 螺纹的基本参数螺纹的基本参数螺纹的基本参数螺纹的基本参数 | 25th Feb. 2010 | MK-RT | Tao Chen 9 Tolerance class: grade, position and deviation as well as thread basic profile 精度等级精度等级精度等级精度等级:级别级别级别级别,位置位置位置位置,与基本轮廓的
8、偏差与基本轮廓的偏差与基本轮廓的偏差与基本轮廓的偏差 pp 0 B d2 B = basic profile 基本轮廓基本轮廓基本轮廓基本轮廓 pp = practical profile实际轮廓实际轮廓实际轮廓实际轮廓 = deviation 偏差偏差偏差偏差 d2 = pitch diameter中径中径中径中径 | 25th Feb. 2010 | MK-RT | Tao Chen 10 Principle description of tolerance classes - part 1 公差等级的基本描述公差等级的基本描述公差等级的基本描述公差等级的基本描述-第第第第1部分部分部分部
9、分 Internal Thread内螺纹内螺纹内螺纹内螺纹External Thread外螺纹外螺纹外螺纹外螺纹 | 25th Feb. 2010 | MK-RT | Tao Chen 11 Principle description of tolerance classes - part 2 公差等级的基本描述公差等级的基本描述公差等级的基本描述公差等级的基本描述-第第第第2部分部分部分部分 | 25th Feb. 2010 | MK-RT | Tao Chen 12 Fastening threads 紧固螺纹 Metric ISO threads公制螺纹 Nominal size ran
10、ge: 1 to 300 mm Designation: i.e. M 30 名义尺寸范围: 1至300mm 表示:如M30 60 Nut Bolt Metric fine ISO threads 公制细牙螺纹 Nominal size range: 1 to 1000 mm Designation: i.e. M 20 x 1 名义尺寸范围: 1至300mm 表示:如M20 x 1 60 Bolt NutPitch | 25th Feb. 2010 | MK-RT | Tao Chen 13 Fastening threads 紧固螺纹 Metric ISO threads公制螺纹 Nomi
11、nal size range: 1 to 300 mm Designation: i.e. M 30 名义尺寸范围: 1至300mm 表示:如M30 60 Nut Bolt Metric fine ISO threads 公制细牙螺纹 Nominal size range: 1 to 1000 mm Designation: i.e. M 20 x 1 名义尺寸范围: 1至300mm 表示:如M20 x 1 60 Bolt NutPitch | 25th Feb. 2010 | MK-RT | Tao Chen 14 Fastening threads紧固螺纹 Whitworth thread
12、 (Brit. Std.)惠氏螺纹(英国标准) Nominal size range: “ to 6 “ Designation: e.g. BSW 1 名义尺寸范围: “ 至 6 “ 表示:如 BSW 1 55 Nut Bolt Pipe thread (parallel) 管螺纹(平行) G1 | 25th Feb. 2010 | MK-RT | Tao Chen 15 Running threads传动螺纹 Acme thread 梯形螺纹 Nominal size range: 8 to 300 mm Designation: i.e. Tr 40 x 7 名义尺寸范围: 8至300m
13、m 表示:如Tr40 x7 30Nut螺母 Bolt螺栓 Buttress thread 锯齿螺纹 Nominal size range : 22 to 300 mm Designation: i.e. S 48 x 8 名义尺寸范围: 22至300mm 表示:如S 48 x 8 30 Nut螺母 Bolt螺栓 3 Round thread 圆螺纹 Nominal size range : 8 to 200 mm Designation: i.e. Rd 40 x 1/6 名义尺寸范围: 8至200mm 表示:如Rd 40 x 1/6 30 Nut螺母 Bolt螺栓 | 25th Feb. 2
14、010 | MK-RT | Tao Chen 16 M MF UNC UNF G Distribution of various Cataloge Taps (Sales value) 不同类别螺纹的分布不同类别螺纹的分布不同类别螺纹的分布不同类别螺纹的分布(销售额销售额销售额销售额) | 25th Feb. 2010 | MK-RT | Tao Chen 17 Thread production螺纹产品螺纹产品螺纹产品螺纹产品 Tap丝锥丝锥丝锥丝锥 e.g. PARADUR N Form C 例如:PARADUR N Form C Thread former挤压丝锥挤压丝锥挤压丝锥挤压丝锥
15、 e.g. PROTODYN Form C 例如:PROTODYN Form C Thread mill螺纹铣螺纹铣螺纹铣螺纹铣 e.g. SC-Thread mill 例如:硬质合金螺纹铣 Die板牙板牙板牙板牙 e.g. PROTOCUT MS 例如:PROTOCUT MS | 25th Feb. 2010 | MK-RT | Tao Chen 18 Production types of threads螺纹加工的类型螺纹加工的类型螺纹加工的类型螺纹加工的类型 Internal threads:内螺纹: External threads:外螺纹 Tapping丝锥 Thread formi
16、ng挤压丝锥 Thread milling螺纹铣 Threading with dies板牙 Thread milling螺纹铣 | 25th Feb. 2010 | MK-RT | Tao Chen 19 Tap nomenclature丝锥专用名词丝锥专用名词丝锥专用名词丝锥专用名词 cyl. thread 圆柱螺纹 d1 l2 l3 l1 l4 d2 spiral angle 螺旋角 f chamfer倒角 flutes槽 neck缩颈 shank柄部 square方柄 d1= nominal diameter公称直径 d2= shank diameter柄部直径 f= helix angle螺旋角 l2= thread length螺纹长度 l3= thread length + neck length螺纹长度+缩颈长度 k = size of square