Axial positioning structure
An axial positioning and positioning technology, applied in the field of transmission, to achieve the effects of simple structure, reliable axial positioning, and reduced torque transmission capacity
Active Publication Date: 2013-01-09
西安西电高压开关操动机构有限责任公司 +1
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[0003] The purpose of the present invention is to provide an axial positioning structure, when the diameter of the hexagonal outer enveloping circle of the shaft is very close to or equal to the diameter of the shaft shoulder, under the condition of neither increasing the diameter of the shaft shoulder nor reducing the size of the hexagon, the Use the shaft shoulder to realize the axial positioning of the parts installed on the hexagonal part of the shaft, realize the transmission of the required torque with the smallest diameter shaft, and solve the problem that due to structural or space constraints, the large shaft diameter cannot be used to achieve the large torque required for transmission. The problem
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] This embodiment is an axial positioning structure for the practical application of the energy storage shaft of the large closing work spring mechanism. This embodiment achieves positioning of parts mounted on the hexagonal section of the shaft with adjacent shaft shoulders.
[0022] Such as Figure 1a to Figure 1f As shown, an axial positioning structure of the present invention includes a shaft and a positioned part installed on the shaft. Such as Figure 1a to Figure 1c As shown, the shaft includes a hexagon 1, an undercut 2 and a shoulder 3 for positioning. Since the shaft section on the right side of the shoulder 3 needs to be installed with bearings, the diameter D4 of the shaft shoulder 3 cannot be increased; and due to the needs of torque transmission and bending resistance, the size of the hexagon cannot be reduced; ...
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Abstract
The invention discloses an axial positioning structure which comprises a shaft and a part to be positioned. The part to be positioned is mounted on the shaft. The shaft comprises a hexagon and a shaft shoulder for positioning. A tool withdrawal groove is reserved at the connection of the hexagon with the shaft shoulder. A hexagon hole matching with the hexagon is reserved on the part to be positioned. A round concave platform is disposed on one side of a positioning end face, attaching to the shaft shoulder, of the part to be positioned. The depth of concave platform is larger than the length between no back chipping of machined hexagon on the shaft shoulder and the shaft shoulder. The axial positioning structure is simple in structure and convenient to machine. When the difference between the full-size envelope circle diameter of a hexagon section of a part on a connecting shaft and the size of the shaft shoulder is quite low, reliable axial positioning of the part on the shaft can be guaranteed, and weakening of torque transmission of the shaft is low.
Description
【Technical field】 [0001] The invention relates to the technical field of transmission, in particular to an axial positioning structure of components on a shaft in a transmission system. 【Background technique】 [0002] see Figure 2a to Figure 2f As shown, parts mounted on the hexagon of a shaft often utilize a shoulder adjacent to the hexagon for axial positioning. Using the conventional axial positioning method, in order to prevent the unclear root of the machining hexagon from blocking the end face of the part installed on the hexagon and the positioning end face of the shaft shoulder, it is usually necessary to process a concave table on the positioned part installed on the hexagon. The diameter of the recess is slightly larger than the maximum outer diameter of the stress concentration-relieving fillet at the root of the hexagonal outer envelope cylindrical surface of the shaft. In order to ensure a sufficient positioning contact area, the diameter of the positioning en...
Claims
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Login to View More IPC IPC(8): F16H57/023
Inventor 邵晓春苏菊芳张强马曾锐
Owner 西安西电高压开关操动机构有限责任公司