Globoidal indexing cam modeling method based on Creo

A technology of indexing cams and modeling methods, applied in 3D modeling, geometric CAD, image data processing, etc., can solve problems such as low modeling efficiency, improve design efficiency and correctness, and solve problems of low modeling efficiency Effect

Inactive Publication Date: 2018-02-02
CENT RES INST OF TIANJIN BENEFO MECHANICAL EQUIP GRP CO LTD
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Problems solved by technology

This modeling method solves the problem of low modeling efficiency of the existing arcuate indexing cam; it provides a theoretical basis for the design, manufacture and simulated motion of the arcuat

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  • Globoidal indexing cam modeling method based on Creo
  • Globoidal indexing cam modeling method based on Creo
  • Globoidal indexing cam modeling method based on Creo

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Embodiment Construction

[0026] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0027] see Figure 1 to Figure 5 , a Creo-based arc surface indexing cam modeling method, according to the following steps:

[0028] Step 1, the establishment of the arc cam mechanism coordinate system: set up the fixed coordinate system O of the arc index cam mechanism respectively 1 -X 1 Y 1 Z 1 and a fixed coordinate system O 2 -X 2 Y 2 Z 2 , fixed coordinate system O 1 -X 1 Y 1 Z 1 the origin O 1 Located at the center of cam rotation, fixed coordinate system O 2 -X 2 Y 2 Z 2 the origin O 2 Located at the center of rotation of the indexing plate; where the fixed coordinate system O 1 -X 1 Y 1 Z 1 Middle axis X 1 The direction is parallel to O 2 o 1 and in the same direction as Z 1 The direction of the direction is ...

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Abstract

The invention relates to a globoidal indexing cam modeling method based on Creo. The modeling method includes the steps that a movable coordinate system and a fixed coordinate system of a globoidal indexing mechanism are created; according to an intermittent movement rule and the meshing principle of the globoidal indexing cam and an indexing disc, an RPY transformation matrix of meshed points iscreated; a matrix transformation equation is created and figured out to obtain Descartes coordinate values of the meshed points in the fixed coordinate system; according to the obtained spacial coordinate values of the meshed points, a globoidal indexing cam modeling program is coded in the Creo software, and meshing curves are drawn; matching is conducted on the curves separately, and a real cambody is modified and filled to obtain a three-dimensional globoidal indexing cam model. According to the technical scheme, by adopting the powerful CAD curve modeling function of the Creo software, the accurate globoidal indexing cam modeling method is implemented and can substantially improve the design efficiency and accuracy of the globoidal indexing cam.

Description

technical field [0001] The invention belongs to the technical field of cam modeling methods, in particular to a Creo-based arc surface indexing cam modeling method. Background technique [0002] The curved surface indexing cam transmission mechanism has simple structure, good rigidity, small axial space and strong bearing capacity, while the curved surface cam has irreplaceable advantages in high-speed high-precision transmission and indexing motion. The accuracy of the working profile of the arcuate indexing cam will directly affect the accuracy of the transmission and indexing, causing wear and shortening the service life of the mechanism, so the accurate drawing of the working profile model of the arcuate indexing cam is crucial to the transmission of the entire mechanism It is very important, because its working profile is a non-developable surface in space, it is difficult to measure or express it with conventional mechanical drawing methods. The multi-cut and avoidanc...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/17G06T17/00
Inventor 胡鑫喆姚成豪冯慧泽丁善忠
Owner CENT RES INST OF TIANJIN BENEFO MECHANICAL EQUIP GRP CO LTD
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