Modeling method for straight cone gear
A modeling method, the technology of bevel gears, applied to components with teeth, belts/chains/gears, portable lifting devices, etc., can solve problems such as inapplicable bevel gear modeling, cumbersome mathematical calculations, and complicated and cumbersome work
Inactive Publication Date: 2013-10-16
SHANGHAI NORMAL UNIVERSITY
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Problems solved by technology
To carry out computer-aided design, a three-dimensional geometric model of the gear is first required. At present, the common modeling method of spur bevel gears is mainly completed by using existing large-scale commercial software or secondary development of large-scale commercial software. This modeling The method requires cumbersome mathematical calculations, and each modeling can only be modeled for a single specific type of gear, and cannot be used for the construction of other types of spur bevel gears, such as the construction of spherical involute spurs The method of modeling the bevel gear cannot be applied to the modeling of the bevel gear cut by the plane spade tool
In addition, every time a different type of spur bevel gear is modeled, it is necessary to carry out specific three-dimensional modeling according to the actual specific requirements, which requires the designer to have high professional knowledge in gear and software, and the work is complicated and tedious , is not easy to master, so a unified and simple 3D modeling method for gears is urgently needed
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Embodiment Construction
[0032] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0033] A modeling method of a standard spherical involute spur bevel gear, which includes the following steps:
[0034] (1) Create a tooth profile curve parameterization module, and select the following parameter equation to complete the drawing of the gear tooth surface surface:
[0035]
[0036]
[0037] z=u-lsinβsinλ
[0038] in,
[0039]
[0040] sin ( λ - δ ) = l cos δ u sin β ,
[0041] r = utan δ,
[0042]
[0043] x—the abscissa of a point on the tooth surface; y—the ordinate of a point on the tooth surface;
[0044] z—the axial coordinate of a point on the tooth surface; r—the pitch c...
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The invention modeling method for a straight cone gear, and the method comprises the following steps: (1) creating parameterized modules of tooth profile curve by using a computer; under the circumstances of components, finishing the curved surface of the gear tooth surface through a group of tooth profile curves or cloud points; (2) under the circumstances of components, creating an entity of a gear tooth; (3) under the circumstances of components, creating an entity of a tooth root cone; (4) under the circumstances of components, annularly arraying the entity of the gear tooth; (5) merging the entity of the gear tooth with the tooth root cone and obtaining an intact virtual three-dimensional gear which emulates a real one through repairing. The modeling method for the straight cone gearprovided by the invention is common, simple and easy to learn; and the method is suitable for creating three-dimensional entity models of different straight cone gears.
Description
technical field [0001] The invention relates to a modeling method of transmission parts, in particular to a method for realizing the modeling of straight bevel gears by utilizing the powerful secondary development function of computer drawing software. Background technique [0002] Straight bevel gears are one of the most basic parts used to transmit parallel axis motion and power in the mechanical field, and are widely used in various mechanical equipment such as mining, metallurgy, construction and transportation. With the rapid development of computer technology, the design and manufacture of gears is developing towards the direction of computer-aided design, manufacture, analysis and measurement. To carry out computer-aided design, a three-dimensional geometric model of the gear is first required. At present, the common modeling method of spur bevel gears is mainly completed by using existing large-scale commercial software or secondary development of large-scale commerc...
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IPC IPC(8): F16H55/17F16H55/08
Inventor 林菁
Owner SHANGHAI NORMAL UNIVERSITY