Method for modeling straight-tooth non-conical gears
A non-conical gear and modeling method technology, which is applied in special data processing applications, instruments, electrical digital data processing, etc. mold, etc.
Inactive Publication Date: 2013-01-16
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 methods of spur and non-conical gears are mainly completed by using existing large-scale commercial software or secondary development of large-scale commercial software. The modeling method requires cumbersome mathematical calculations, and each modeling can only create a model for a single specific type of gear, and cannot be used for the construction of other types of spur non-conical gears, such as the construction of spherical involutes The method of non-bevel gear model cannot be applied to the modeling of elliptical bevel gear cut by spade tooth cutter
In addition, every time modeling a different type of spur non-conical gear, 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. It is cumbersome and difficult to master, so there is an urgent need for a unified and simple 3D modeling method for gears
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[0037] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0038] A modeling method of an elliptical bevel gear cut by a spade tooth tool, which includes the following steps:
[0039] (1) Create a tooth profile curve parameterization module, and select the following parameter equation to complete the drawing of the gear tooth surface surface:
[0040]
[0041]
[0042] z=u-lsinβsinλ
[0043] in
[0044]
[0045]
[0046]
[0047] cosβ=cosα 0 cosψ,
[0048] tan δ = r u ,
[0049] cos ( λ - δ ) = sin α 0 sin β ,
[0050]
[0051] Simultaneously elliptical pitc...
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The invention discloses a method for modeling straight-tooth non-conical gears. The method comprises the following steps of: (1) creating a tooth profile curve parameterization module, and under the environment of parts, creating tooth surfaces of each gear tooth one by one by a curve group or cloud points; (2) under the environment of the parts, creating entities of each gear tooth one by one; (3) under the environment of the parts, creating gear tooth-root non-conical entities; and (4) under the environment of the parts, combining the gear teeth and the gear tooth-root non-conical entities,and trimming to obtain a complete virtual three-dimensional gear simulated entity. The method for modeling the straight-tooth non-conical gears is universal, simple and easy, and applicable to construction of three-dimensional entity models of various kinds of different straight-tooth non-conical gears.
Description
technical field [0001] The invention relates to a modeling method of transmission parts, in particular to a method for realizing modeling of straight-toothed non-conical gears by utilizing the powerful secondary development function of computer drawing software. Background technique [0002] Spur non-conical 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 methods of spur and non-conical gears are mainly completed by using existing large-scale commercial software or secondary developmen...
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IPC IPC(8): G06F17/50
Inventor 林菁
Owner SHANGHAI NORMAL UNIVERSITY