Outer spline gear and spline gear transmission device

Abstract

The invention discloses an outer spline gear and a spline gear transmission device. A tooth of the outer spline gear is a straight tooth, each tooth comprises an involute gear tooth section and an involute outer spline tooth section which are connected together, the number of teeth z2, modulus m2, pressure angle alpha2, modification coefficient X2 and tooth dedendum coefficient h*f2 of each involute outer spline tooth are same with the number of teeth z1, modulus m1, pressure angle alpha1, modification coefficient X1 and tooth dedendum coefficient h*f1 of each involute gear tooth, and the tooth height coefficient h*a2 of each involute outer spline tooth is smaller than the tooth height coefficient h*a1 of each involute gear tooth. The spline gear transmission device comprises the outer spline gear, a transmission gear and a connecting sleeve, wherein each tooth of the outer spline gear is the straight tooth, each tooth comprises the involute gear tooth section and the involute outer spline tooth section which are connected together, the part, away from the involute gear tooth section, of the involute outer spline tooth section is provided with a clamping groove, and a clamping ring is arranged on the clamping groove, and is abutted against the inner side of the connecting sleeve. The outer spline gear has the advantages that the axial space of a transmission system is effectively saved, and the processing is convenient.

Description

technical field [0001] The invention relates to a gear and a gear transmission device. Background technique [0002] In the field of mechanical transmission, gear transmission and spline transmission are the two most important transmission methods. Gears and splines are often designed on the same workpiece. For example, the sun gear in the planetary gear system is designed to have both gears and splines. Usually The sun gear and the spline are designed separately, that is, the gear is designed according to the gear standard, and the spline is designed according to the spline standard. The two need to be processed by two different tools, so there must be enough hobs between the gear and the spline Retraction space, which makes the axial space required by the transmission system larger, which brings design difficulties to the transmission system with tight axial space. Contents of the invention [0003] The first object of the present invention is to provide an external spl...

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Problems solved by technology

[0002] In the field of mechanical transmission, gear transmission and spline transmission are the two most important transmission methods. Gears and splines are often designed on the same workpiece. For example, the sun gear in the planetary gear system is designed to have both gears and splines. Usually The sun gear and the spline are designed separately, that is, the gear is designed according to the gear standard, and the spline is designed according to the spline standard. The two need to be processed by two different tools, so there must be enough hobs between the gear and the spline Retraction space, which makes the axial space required by the transmission system larger, which brings design difficulties to the transmission system with tight axial space

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