Axial positioning structure provided with oil storage tanks and arranged on engine camshaft
An axial positioning and camshaft technology, applied in the direction of lubrication of valve accessories, etc., can solve the problems of high processing difficulty, performance degradation, and increased engine noise, etc., to improve working conditions, reduce processing costs, and reduce wear and tear. Effect
Inactive Publication Date: 2012-11-28
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
[0003] At present, the axial movement of the general camshaft or the design of the axial positioning structure is not perfect, which will lead to serious wear on both sides, poor lubrication effect, and deterioration of the running state of the camshaft, which will lead to serious wear, damage, and system vibration of the parts. become larger, which will eventually lead to greater engine noise and lower performance; through the design of the axial dimension chain of the camshaft to ensure the amount of camshaft movement, this method brings problems such as high machining accuracy requirements and high processing difficulty for the camshaft and its matching connection
There is no simple and easy technical means to solve the above problems in the prior art
Method used
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[0016] The present invention will be further described below in conjunction with accompanying drawing:
[0017] Such as figure 1 As shown, the present invention includes a camshaft 9, which is provided with double positioning shoulders 4, the camshaft 9 is axially provided with a main oil passage 2, and the journal 10 between the double positioning shoulders 4 is radially opened. There is an oil supply passage 3, the main oil passage 2 communicates with the oil supply passage 3, the two opposite sides of the double positioning shoulder 4 are the working side 5 respectively, and there is a functional groove 6 between the working side 5 and the journal 10, The functional groove 6 plays the role of eliminating stress concentration and providing lubricating oil to the two working sides 5 . Such as image 3 with Figure 4 As shown, a radial oil storage tank 7 is also provided on the working side 5 , and the radial oil storage tank 7 is connected with an annular oil storage tank ...
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The invention relates to an axial positioning structure provided with oil storage tanks and arranged on an engine camshaft, belonging to shaft parts in the mechanical industry. The axial positioning structure comprises a camshaft, the camshaft is provided with two positioning shaft shoulders, the camshaft is axially provided with a main oil duct, a shaft neck between the two positioning shaft shoulders is provided with an oil supply duct in a radial direction, the main oil duct is communicated with the oil supply duct, two opposite side faces of the two positioning shaft shoulders are respectively an operating side face, a function groove is formed between each operating side face and the shaft neck, each operating side face is provided with a radial oil storage tank, and the radial oil storage tank is communicated with an annular oil storage tank. According to the invention, the axial displacement of the camshaft can be controlled well, thereby greatly prolonging the service life and reducing the abrasion loss in the process of application; and a situation that the axial displacement of the camshaft of an engine always meets the design requirements during the service life of a complete machine is ensured, and a situation that the engine is not subjected to repair or maintenance due to the axial displacement during the service life of the complete machine is ensured.
Description
technical field [0001] The invention belongs to shaft parts in the machinery industry, and in particular relates to an axial positioning structure with an oil storage groove on an engine camshaft. Background technique [0002] The axial displacement of the camshaft used by the engine to drive the valve train is a very critical parameter. The design and control of this parameter mainly depends on the axial positioning structure, arrangement, machining accuracy of the structure, material and surface state, the camshaft The axial excitation and so on. [0003] At present, the axial movement of the general camshaft or the design of the axial positioning structure is not perfect, which will lead to serious wear on both sides, poor lubrication effect, and deterioration of the running state of the camshaft, which will lead to serious wear, damage, and system vibration of the parts. If the camshaft becomes larger, the engine noise will increase and the performance will decrease; th...
Claims
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IPC IPC(8): F01M9/10
Inventor 邹伟万建王金石林飞
Owner DONGFENG MOTOR CORP HUBEI