Dynamic and static pressure ball socket bearing structure for high speed gear shaper

Abstract

The invention relates to a dynamic and static pressure ball socket bearing structure for a high speed gear shaper. The structure comprises a ball rod (1), a ball socket (2) and a shell (3), wherein the lower end of the shell (3) is connected with a cutter spindle; a ball main body (6) at the lower end of the ball rod (1) is positioned in the ball socket (2); the ball socket (2) is arranged in an installation seat of the shell (3) and is positioned and subjected to gap adjustment along the axial direction of the ball rod (1) through a pressing ring (4); and the upper end of the ball rod (1) stretches out of the pressing ring (4) and is connected with a crank. The structure is characterized in that: an oil injection hole (7) is formed in the center of the ball rod (1) and reaches the ball center of the ball main body (6); the ball main body (6) is provided with a throttler (5) along the radial direction; and the oil inlet end of the throttler (5) is communicated with the oil injection hole (7) which reaches the ball center, and the oil outlet end of the throttler (5) is communicated with an annular shallow cavity on the surface of the ball main body (6), so that the shallow cavity generates dynamic pressure bearing force and static pressure bearing force due to a step effect to bear upper and lower axial forces from a gear shaping spindle when the ball main body (6) moves. The structure is simple and has a good lubricating effect and long service life.

Description

technical field [0001] The present invention relates to a gear shaping machine, in particular to a ball joint bearing structure connecting a tool spindle and a crank, which is one of the key moving parts in a high-speed gear shaping machine, and in particular to a dynamic and static pressure bearing structure for a high-speed gear shaping machine. Ball joint bearing structure. Background technique [0002] At present, most of the main motions of high-speed gear shaping machines use the crank slider mechanism. The tool spindle is used as the slider in the mechanism, and is connected with the connecting rod through the ball joint bearing. Movement, in this mechanism, due to structural limitations, the diameter of the ball in the ball joint bearing is about 50-60mm, the cutting force of the tool and the driving force of the tool spindle moving up and down both act here, and the direction and magnitude of the force are different. changes at high frequencies. Therefore, when de...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the structure and lubrication method of the existing ball joint bearing cannot meet the gear shaping speed of 2000 times / min or more, and to design a high-speed bearing with good lubrication effect, which can meet the requirements of high-speed gear shaping and has a long service life. Dynamic and static pressure spherical hinge bearing structure for gear shaper

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