This standard is a part of the mechanical drawing structure drawing method, which stipulates the representation method of gears and is applicable to the drawing of gears in mechanical drawings. GB/T 4459.2-2003 Mechanical drawing gear representation method GB/T4459.2-2003 standard download decompression password: www.bzxz.net

GB/T 445S$Mechanical drawing method is divided into five parts: Part 1: Mechanical drawing method for indicating screw effect and bursting cumulative parts Part 2 Mechanical drawing Part 3: Mechanical drawing Part 1 Mechanical drawing Gear assembly method Spring representation method Part 5: Mechanical center hole representation GB/T 4459. 2—2003
This part is the second part of GB/T445: This part replaces GB/T11.59.2—1984 Mechanical drawing gear drawing selection.
Compared with GB/T4469.2—1684, the main changes of this part are as follows: The part name has been changed:
The internal clutch in 4.5 has been changed to the drawing method of hypoid gear pair, spherical meshing, quasi-gear pair meshing and bevel gear pair with two axes intersecting obliquely!
The writing format is connected to GB/T1.1—2000 and has been modified. Appendix A of this part is an informative appendix.
This part is proposed and managed by the National Technical Committee for Technical Product Document Standardization. The drafting units of this part are: Mechanical Science Research Institute, Jinan University of Science and Technology, Anhui Province Kangda Automobile Manufacturing Co., Ltd., Changan Qihua (Zhaoyong) Co., Ltd., Hefei University of Technology, and Huolianhai University. The main drafters of this part are Xie Yan, Wang Huaide, Wang Gongjie, Li Xueqi, and Di Yutang. 1 Scope
Part I Definitions "Representation of gears
Mechanical drawings
This part applies to the design of gears in mechanical drawings. 2 Normative references
Representation of gears
GB/T4459.2—2003
The following clauses are applicable to this part of GB/T4459.2—2003. All references with a specified date shall be subject to all amendments (including errata) or revisions. The latest revisions do not apply to this part, however, parties to agreements based on this part are encouraged to investigate whether the latest versions of these documents can be used. For all undated references, the latest version applies to the technical part, GH/337 Basic Gear Technical Specifications (ncy [SO/R1122-1) 3 Drawing of teeth, racks, scorpion rods, worm wheels and sprockets 3.1 The cam part is generally drawn according to the specifications of Figures 1 to 3.1.1 The tooth pressure drawing and tooth top line are drawn with solid lines. 3.1. 2. Draw the dividing surface and dividing line with two thin dotted lines. 3.1.3 Draw the tooth root surface and the tooth line with thin solid lines. You can ignore it. In the sectional view, the tooth root line is drawn with a solid line. 3.2. Generally, two solid lines are used to represent the gear. The worm gear is drawn with two solid lines or one solid line to represent the same part (Figure 1 to Figure 3). 3.3. In the drawing, when the cut plane passes through the axis of the gear, the gear tooth is not cut (Figure 1 to Figure 3, Figure 3 to Figure 4, Figure 7). 3.4. If you need to show the tooth shape, you can use the best The two teeth are formed by thick solid lines in the shape of the teeth, and the partial enlargement diagrams of appropriate proportions are shown in Figures 4 and 7.
3.5 When the characteristics of the tooth line are to be shown, the three-axis and tooth line can be shown by thin solid lines (Figure 6, Figure 8). The self-tooth does not need to be shown. 3.6 If the length of the tooth is to be noted, it can be noted in the drawing of the tooth shape, and the solid line can be drawn in another view. (Medical 4):
3.7 The method of drawing a round gear is shown in Figure 6.
1 Four-dimensional gear surface method
Figure 2 Drawing method of thrust gear
CB/T4459.2—2003
Figure 3 Drawing method of worm gear
Figure 5 Drawing method of cylindrical gear with tooth shape
Figure? Sprocket drawing
Sprocket drawing
Figure 6 Gear surface methodbZxz.net
4 Four-dimensional method of gear, worm and worm gear
Tooth appearance representation
GB/T4459.2—2003
Year, 1 In the view of the projection surface perpendicular to the axis of the sample gear, the tooth top circumference in the approximate area is drawn with thick solid lines, see figure) . Figure 11.12. The method of omitting is shown in Figure 9h). 4.2 In the standard of the plane parallel to the lower cylindrical gear and the axis of the gear, the tooth filling line of the meshing diagram is not required, the pitch line is drawn with a thick solid line, and the lines at other places are drawn with thin dots (Figure 10.14). 4.3 In the section view of the round gear combination, the rack combination and the gear combination, when the sectioning plane passes through the line of the two meshing gears, in the meshing area, the gear teeth of one gear are drawn with solid lines, and the blocked part of the gear teeth of the other gear are drawn with thin dots (Figure 11, Figure 1.18): It can also be omitted (Figure 12, Figure 13, Figure 17). 4.4 In the application, when the cutting plane does not pass through the axis of the meshing gear, the gears must be drawn without cutting (Figure 19) 4.5 Hypoid gear pair meshing, 8-shaped meshing, gear pair meshing machine two axis oblique intersection can be drawn as shown in Figure 15~Figure 18
4.6 The surface method of frequency flow gear meshing is shown in Figure 19 and Figure 2C.4.7 Butterfly, Hi gear single pig see Figure 2: to Figure 23. 4.8 The two methods of circular extension gear marriage are shown in Figure 24. 5 Gear national sample format
Gear sample format see Appendix A,
Figure 9 The spray method of column gear pair||t t||External meshing (I)
CB/T4459.2-2003
10 Drawing of the meshing of cylindrical gears - external meshing (II) Drawing of the meshing of circular gear pairs
Internal meshing
Figure 13 Drawing of the meshing of bevel gear pairs with orthogonal axes (I)Figure 12
Drawing of the meshing of rack and pinion
Figure 14 Drawing of the meshing of gear pairs with orthogonal axes (II)15 Drawing of the meshing of hypoid gear pairs17 Drawing of the meshing of gear pairs with skewed axes19 Drawing of the meshing of helical gear pairs with staggered axesGB/T 4459.2—2003
16 Method of meshing of bevel gear pairs Method of meshing of oblique plane gears and bevel gears Method of meshing of helical gears whose axes are not perpendicular to each other 20
GB/T 4459.2—2003
Method of meshing of cylindrical worm gear pairs (I)
Figure 23 Method of meshing of toroidal worm gear pairs
Method of meshing of cylindrical worm gear pairs (II)
Method of meshing of gears
Appendix A
Informative Appendix)
Example of tooth pattern format
GB/T 4459.2—2003
This appendix only lists the drawing formats of the elemental gear (broken A.1) cone gear (Figure A.2) weak light (Figure A.3) and gear (Figure A, 1).
The vertical table in the figure is generally placed at the top of the drawing. The numerical items listed in the parameter table can be increased or decreased as needed. The inspection date depends on the acceptance requirements. The technical requirements in the drawing are generally located in the lower right corner of the drawing. GB/T4459.2—2003
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CB/T 4459. 2—2003
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CB/T 4459.2—2003
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GB/T 4459.2—2003
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