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Types of screw fasteners 螺纹紧固件的种类 Symbols of screw fasteners 螺纹紧固件的标记

Screw Fasteners 螺 纹 紧 固 件. Types of screw fasteners 螺纹紧固件的种类 Symbols of screw fasteners 螺纹紧固件的标记 Drawing methods of assemblies of screw fasteners 螺纹紧固件的装配画法 Exercises 练习题. 请点击相应标题显示其内容. Types of screw fasteners 螺纹紧固件的种类.

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Types of screw fasteners 螺纹紧固件的种类 Symbols of screw fasteners 螺纹紧固件的标记

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  1. Screw Fasteners 螺纹紧固件 Types of screw fasteners 螺纹紧固件的种类 Symbols of screw fasteners 螺纹紧固件的标记 Drawing methods of assemblies of screw fasteners 螺纹紧固件的装配画法 Exercises 练习题 请点击相应标题显示其内容

  2. Types of screw fasteners 螺纹紧固件的种类 Parts with threads used for joining and fastening are called screw fasteners. The most widely used components as screw fasteners are bolts, double screw bolts, screws, nuts, washers 用螺纹联接并起紧固作用的零件称为螺纹紧固件。常用的螺纹紧固件有螺栓、双头螺柱、螺钉、螺母、垫圈等。 Hexagon head bolt. Stud. Slotted cheese head screw. Slotted pan head screw. Slotted countersunk screw. Hexagon socket cap 六角头螺钉 双头螺柱头 圆柱头螺钉 盘头螺钉 沉头螺钉 圆柱头内六角螺钉 Slotted cone pointed set screw. Hex nut. Slotted nut . Bright washer. Spring washer. Tab washer 锥端紧定螺钉 六角螺母 六角槽形螺母 平垫圈 弹簧垫圈 外舌止动垫圈 请点击鼠标左键显示后面内容

  3. Symbols of screw fasteners 螺纹紧固件的标记 Bolt Stud Screw Nut Washer Number of National Standard GB编号 及年代 Type symbol  Nominal diameter ×Pitch × l 特征代号· 公称直径×螺距×公称长度l （M 、S 、Tr、B） (粗牙省细牙注) Degree of capability; material and heat treatment 性能等级.材料及热处理 Surface treatment 表面 处理 Style Specification, Other requirements precisionof the appearance and the dimension 型式 规格、精度 其他尺寸要求 Name Standard number 名称 国标号 Omit 可省略标注 1.Bolt 螺栓GB/ T5782 M6×30 (表示: 螺纹规格M6，公称长度l=30mm的A级六角头螺栓) 2.Stud 螺柱GB/T897 M8×30 (表示:两端均为粗牙普通螺纹,d=8mm, l=30mm,按B型制造) 3.Stud 螺柱GB/ T897 AM10-M10×1×50 (表示：拧入端为粗牙普通螺纹,露出端为螺距 P=1mm的细牙普通螺纹,d=10mm, l=50mm,bm=1d,按A型制造的双头螺柱) 4.Screw 螺钉GB/ T65 M5×45 (表示: 螺纹规格M5, l=45mm的开槽圆柱头螺钉) 5. Nut 螺母GB/ T6170 86 M8 (表示: 螺纹规格 D=M8的A级1型六角螺母) 6.Washer 垫圈GB/ T97.1 6 140HV (表示:用于螺纹规格M6的平垫圈，性能等级为140HV) 指与其相配的螺纹件的大径 而不是该垫圈本身的尺寸值 请点击鼠标左键显示后面内容

  4. Drawing methods of assemblies of screw fasteners 螺纹紧固件的装配画法 1.Frequent joining methods常见联接型式 Drawing method画图方法 (1)Bolt Joint螺栓联接 (2)Stud Joint双头螺柱联接 Drawing method画图方法 (3)Screw Joint螺钉联接 Drawing method画图方法 Drawing method of hexagon nut 六角螺母画法 (1)The trim sizerepresentation. 按实际尺寸和形状画出； Representation 常见画法 (2)The proportionalrepresentation. 按比例关系完整画出； (3)The simplified representation. 按比例关系简化画出。

  5. Example : Draw an assembly using a M10 bolt, Component thickness is t1=10mm,t2=15mm, and clearance adjustment in medium. 用螺纹规格为 M 10的螺纹紧固件将厚度为t1=10mm, t2=15mm 的二零件连接, 以中等装配精度画其螺纹联接装配图。 • 1.Choosing dh确定孔径dh: Choice by GB/T 5277or dh=1.1d = e= ∵D<16∴ Choice(GB/T 6170 M10) s= m= 2.Choosing nut确定螺母: d1= Choice(GB/T 197.1 10) d=10d2 = h= 3.Choosing washer 确定垫圈: s= Choice( GB/T 5782 M10×l? ) k= 40 4.Choosingbolt 确定螺栓: 5.Choosingbolt 确定螺栓有效长度l: a =(0.3～0.5)d 螺栓露出端的长度 lˊ=δ1+δ2+ 0.15d(h垫圈厚)+ 0.8d(m螺母厚)+ a Choice l by GB/T 5782 根据国标所给数值选择l =10+15+2+8.4+(0.3～0.5)10 = 38.4～40.4 6.Draw the three views of a set bolt assembly. 画螺栓联接装配图。 请点击鼠标左键显示后面内容

  6. Exercises练习题 Draw an assembly using a M12 bolt, Component thickness is δ1= δ2=16mm, and clearance adjustment in medium. (Scale 1:1) 用螺纹规格为 M 12的螺纹紧固件将厚度为 δ1= δ2=16mm 的两零件联接, 以中等装配精度画其螺纹联接装配图。 (比例1:1) 5 Bolt M20xL 1 4 Washer 1 3 Part 1 1 2 Part 2 1 1 Nut M20 1 NO Name Spec NUT AND BOLT ASSEMBLY ID NAME GRADE

  7. 本 小 节 结 束 谢谢您的认真学习！ 前一页

  8. Bolt Joints螺栓联接的画法 Points画图要点: Clearance hole omit line 间隙孔中易漏线 ⑴The contact surface of two parts is represented as a line. 两零件接触面画一条线。 ⑵When two joint parts are cut the directions of their section lines shall be reversed. 相邻件剖面线方向应相反。 ⑶ When a section face cuts thefastening parts theseare not drawn according to section drawings, but still following their outlines. 沿轴线剖切时,螺纹紧 固件均按不剖画。 两零件接触不应画两条线。 ⑷The nut and bolt head can be simply drawn as outlines. 螺母及螺栓头部简化画出。 两零件剖面线应相反 请点击鼠标左键显示后面内容

  9. Nut end 露出端 Metal end 旋入端 Stud Joints双头螺柱联接的画法 Points画图要点: (1)The thread end line is leveled with its end face. 螺纹终止线应与机件的螺孔端面平齐。(不可高或底于端面) (2)The depth of the drilled hole can be simply plotted according to the thread’s depth. 在装配图中,钻孔深度可按螺纹深度简化画出。 120°drill point 孔底画120° bm=1d (Steel钢) bm=1.25d or 1.5d (Cast iron铸铁) bm=2d(Aluminum铝) (3)If the notch width of the warsher is too small, a thick black line is adoptedwith an inclination angle of 60°. 弹簧垫圈的开口处可简化画成60°涂黑的斜线。 请点击鼠标左键显示后面内容

  10. 俯视图槽口应画成倾斜45° Screw Joints螺钉联接的画法 Points 画图要点: （1）The notch of the screw head must be shown in the front view It must be drawn with an inclination angle of 45° 螺钉头部的一字槽主视图投 影应看到槽口,俯视图规定画成 倾斜45°方向。 (2)If the notch width of the screw head is too small, a thick black line is adopted. 螺钉头部的槽宽过小时，可采用涂黑的画法； (3)Making the thread end line longer than that of the end face of the thread hole. 使螺纹终止线伸出螺孔端面。 请点击鼠标左键显示后面内容

  11. Bolt 螺栓 The bolt assembly is used when joint parts are not too thick to drill through holes. 螺栓 用于联接二通孔薄件。 在图片上点击鼠标左键可以“暂停”或再次“播放”

  12. Stud 双头螺柱 Stud are used in situations where a part with a through hole and a part with blind tapped hole. 双头螺柱用于联接一通孔薄件和一盲孔厚件。 在图片上点击鼠标左键可以“暂停”或再次“播放”

  13. Screw螺钉 Screws are mostly used for the cases with small bearing forces. such as inspection covers which have to be removed frequently. 螺钉 多用于用于受力不大需要经常拆卸的情况。 在图片上点击鼠标左键可以“暂停”或再次“播放”

  14. Nut螺 母 Nut are used to match the other screw fasteners. 螺母与其他螺纹件配合使用。 在图片上点击鼠标左键可以“暂停”或再次“播放”

  15. Washer 垫 圈 Washer are used to match the other screw fasteners. 垫圈与其他螺纹件配合使用。 弹簧垫圈 平垫圈 在图片上点击鼠标左键可以“暂停”或再次“播放”

  16. Assemble views of fasteners螺栓联接装配图 Usinglooking-up table method 按实际尺寸和形状画出 Simple descriptions 按比例关系简化画出 Using the proportional drawing method 按比例关系完整画出

  17. Assemble views of fasteners双头螺柱联接装配图 Usinglooking-up table method 按实际尺寸和形状画出 Simple descriptions 按比例关系简化画出 Using the proportional drawing method 按比例关系完整画出

  18. Assemble views of fasteners螺钉联接装配图 Using the proportional drawing method按比例关系完整画出 Usinglooking-up table method 按实际尺寸 和形状画出 Simple descriptions 按比例关系 简化画出

  19. Assemble views of the set screw 紧定螺钉联接装配图 紧定螺钉起防止防止齿轮沿轴向窜动的定位作用 The set screw 紧定螺钉 Assemble views of the set screw 紧定螺钉联接装配图 Before assembly装配前各零件

  20. Assemble views of lock washers 止动垫圈联接装配图 Lock washers外舌止动垫圈 Lock washers圆螺母止动垫圈装配前各零件 止动垫圈起防止圆螺母松脱的定位作用 Assemble views of lock washers 止动垫圈联接装配图

  21. Holes of stud and screw 螺栓和螺钉通孔(GB/T 5277-1985) Thread specification In close Through holes In medium Free fit 请点击鼠标左键显示后面内容

  22. Hexagon nut六角螺母的画法 R R R P’’ P’’ P’ P’ R R D R Steps画图步骤： 02 1.以1.5D为直径画倒角圆,再用60°直尺画其外接六边形。 0 03 03 2.画螺纹大径24和小径20.75的圆形(大径用细线画3/4圈)。 0.8D 请 点 击 鼠 标 左 键 显 示 后 面 内 容 01 3.将六角形向主视图投影求出各棱线位置,以0.8D确定其厚度为19.2,画出其上、下表面。 AF=1.5D P 4.以倒角圆半径R过上表面中心画圆弧,求与中心线的交点01后再画圆弧,求与中心线的交点P和二圆弧的二个交点P’ 。 AF=1.5D=24×1.5=36 Nut M24 5.分别以P和P’为圆心,以圆心至上表面距离为半径画圆弧,既为倒角圆弧。 60° 60° 6.重复上述方法画下表面圆弧并在二边画出30°斜线的倒角。 7.画侧视图上下表面,使其宽等于对边距(倒角圆直径),分别以上表面中心和二边为圆心以倒角圆半径画圆弧,求出三圆弧的二交点P’’。 8.再以P’’为圆心.P’’至上表面的距离为半径 画倒角圆的圆弧既可,再按此法画另一面的圆弧。 注意：侧视图二边是直角。 在图片上点击鼠标左键 可以“暂停”或再次“播放”

  23. Nut and bolt assembly螺母与螺栓联接装配图

  24. 在图片上点击鼠标左键可以“暂停”或再次“播放”在图片上点击鼠标左键可以“暂停”或再次“播放”

  25. 在图片上点击鼠标左键可以“暂停”或再次“播放”在图片上点击鼠标左键可以“暂停”或再次“播放”

  26. 在图片上点击鼠标左键可以“暂停”或再次“播放”在图片上点击鼠标左键可以“暂停”或再次“播放”

  27. 在图片上点击鼠标左键可以“暂停”或再次“播放”在图片上点击鼠标左键可以“暂停”或再次“播放”

  28. Bolt Joints螺栓联接的画法

  29. Stud Joints双头螺柱联接的画法

  30. Screw Joints螺钉联接的画法

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