A split-type high-precision planet carrier and its processing method
A processing method and planet carrier technology, applied to belts/chains/gears, transmission parts, mechanical equipment, etc., can solve problems such as increasing the meshing frequency of planetary transmission units, aggravating system vibration, and failure of planetary row components
Active Publication Date: 2021-04-06
CHINA NORTH VEHICLE RES INST
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Problems solved by technology
The planetary transmission itself has internal excitation, system vibration and other phenomena. In order to increase the power density and increase the transmission speed, this method will undoubtedly increase the meshing frequency of the planetary transmission unit and aggravate the system vibration. The internal excitation will generate support dislocation and resonance of rotating components. , leading to early failure of planetary row components
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[0043] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0044] In order to maintain high precision in the positioning holes, support holes and planetary wheel shaft holes of the split planetary carrier during processing, dismantling, installation and component assembly, reduce internal excitation caused by eccentricity, misalignment and transmission errors, and reduce vibration, the present invention provides A split planetary carrier design scheme, after the main and auxiliary planetary carriers complete the processing of dimensional elements, structural elements (splines, support holes, etc.) Combining, processing, and positioning, and then completing the design of the planetary gear shaft hole size and shape and position tolerances, forming a complete overall design of the...
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The invention proposes a split-type high-precision planetary frame and its processing method. The planetary frame is composed of a main planetary frame and a secondary planetary frame. There are one-to-one corresponding planet wheel shaft holes, planet carrier positioning pin holes and planet carrier bolt holes. Three concentric stepped convex circles protrude from one side of the auxiliary planet carrier; the middle convex circle can be used to support the planet carrier. The main and auxiliary planetary carriers are fastened together. During processing, the main and auxiliary planetary carriers and positioning pins are firstly processed according to their respective benchmarks to complete the independent dimension elements, roughness elements and shape and position tolerance elements of the parts; after fine adjustment of the benchmarks, they are processed in the combined state of the main and auxiliary planetary carriers Positioning pin hole; finally, through centering, processing, and positioning, the size and shape tolerance design of the planetary gear shaft hole is completed. The invention solves the problem that a split-type high-precision planetary frame assembly cannot be disassembled, assembled, adjusted and processed, and can ensure that the support and positioning accuracy of the main and auxiliary planetary frames remain unchanged after repeated disassembly and installation of the planetary frame.
Description
technical field [0001] The invention belongs to the technical field of mechanical transmission, and the method is used for the design of a split-type high-precision planet carrier. Background technique [0002] The planetary carrier is one of the basic central components of the planetary transmission, which has the functions of transmitting motion, load and power. The planetary transmission that transmits the same power generally adopts the technical approach of increasing the speed and reducing the transmitted torque to increase the power density and reduce the load-carrying volume. The planetary transmission itself has internal excitation, system vibration and other phenomena. In order to increase the power density and increase the transmission speed, this method will undoubtedly increase the meshing frequency of the planetary transmission unit and aggravate the system vibration. The internal excitation will generate support dislocation and resonance of rotating components...
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IPC IPC(8): F16H57/08B23P15/14
CPCB23P15/14F16H57/082
Inventor 李洪武何融程燕许晋李亮张玉东
Owner CHINA NORTH VEHICLE RES INST