JPH06330999A - Oval gear - Google Patents

Abstract

PURPOSE:To perform conversion of an angular velocity by a method wherein one of the two focuses of an elliptical forms a rotary angle and teeth shapes are radially formed on the periphery of the elliptical centering around a rotary shaft. CONSTITUTION:One focus of an elliptical 1 forms a rotary shaft 2, and teeh shapes are radially formed in the periphery of an elliptical centering around the rotary shaft 2. Gears in the same oval shape are engaged with each other in a position relation shown in a figure. When a drive shaft 3 is then rotated in the direction of an arrow mark 4, a driven shaft 5 is rotated in the direction of an arrow mark 6. At a current time, in the oval gear, when the driven shaft 3 is rotated in an angle A arc, the driven shaft 5 is rotated in an angle B arc. When the drive shaft 3 makes one full turn, the driven shaft 5 also makes one full turn. Similarly, since conversion of an angle is practicable, the efficiency of a conventional machine tool and engine can be improved, and the design of an energy saving and high efficient machine can take place.

Description

DETAILED DESCRIPTION OF THE INVENTION [001] [Industrial field of application] The present invention relates to an elliptical gear having radial teeth on the circumference of an ellipse.

[002] [Prior Art] Conventionally, a gear has been formed based on a circle. The purpose was to change the rotation ratio, change the rotation direction, and transmit power to other rotation shafts. With a circular gear, conversion of angular velocity was impossible.

[003] [Problems to be Solved by the Invention] The present invention is intended to be developed in order to enable conversion of angular velocity, which has heretofore been impossible.

[004] [Means for Solving the Problem] The means for solving the problem will now be described with reference to the drawings. One of the focal points of the ellipse 1 is the rotation axis 2, and the ellipse is radially arranged around the rotation axis. Carve a tooth profile. The elliptical gears having the same shape are meshed with each other in the positional relationship shown in FIG. When the drive shaft 3 is rotated in the direction of arrow 4, the driven shaft 5 is rotated in the direction of arrow 6. At that time, in the elliptical gear, when the driving shaft rotates by the angle A, the driven shaft rotates by the angle B. When the driving shaft makes one revolution, the driven shaft also makes one
Rotate. The tooth profile curve of the elliptical gear is a curve obtained by correcting the elliptical element component to a conventionally known tooth profile curve.

[Operation] [Operation] Since the present invention has the above-described structure, when this is rotated, rotation in which the angular velocity changes can be obtained.

[006] [Example] The following can be carried out in implementing the present invention.

B) By combining elliptical gears with other mechanical elements, it is possible to change the operating speed of the mechanical device.

B) In a press machine, the speed near the bottom dead center can be slowed down, which makes it possible to improve the processing accuracy of products, reduce noise generation, and extend the die life.

C) In a compressor of gas or liquid, the speed of the compression process and the suction process can be changed. Therefore, an efficient compressor can be obtained.

D) In an internal combustion engine such as a two-cycle engine or a four-cycle engine, the speed of the explosion process and the compression process can be changed, so that an efficient engine can be obtained. Energy saving effect can be expected.

[007] [Advantages of the Invention] As described above, since it is possible to convert angular velocity, it is possible to improve the efficiency of conventional machine tools, engines, etc., and it is possible to design energy-saving and highly efficient machines. become.

[Brief description of drawings]

 FIG. 1 is a front view of the present invention. FIG. 2 is a front view of the assembly positional relationship of the present invention. [Explanation of symbols] 1 is an ellipse 2 is a rotation axis 3 is a driving axis 4 is an arrow 5 is a driven axis 6 is an arrow

Claims (1)

[Claims] [Claim 1] An elliptical gear in which one of the two focal points of the ellipse 1 is a rotation axis 2 and a tooth profile is radially engraved on the circumference of the ellipse about the rotation axis.