Quasi-hyperbolic gear manufacturers share commonly used gear profiles.

If only on the circumference of the friction wheel to divide the equal pitch, install the protrusions, and then mesh with each other and rotate, the quasi-hyperbolic gear manufacturer believes that the following problems will occur:

The contact point of the tooth will produce sliding, the movement speed of the contact is fast, the speed is slow, and the vibration and noise are generated. Quasi-hyperbolic gear manufacturers believe that in the gear transmission, the need for quiet and smooth, resulting in a gradual curve.

1) Quasi-hyperbolic gear manufacturers say what is involute

Wraps the line with a pencil at one end around the cylinder, and then gradually loosen the line with the line taut. The curve drawn with a pencil at this time is an involute curve. The outer perimeter of a cylinder is called the basic circle.

2) Example of an 8-tooth involute gear

After the cylinder is divided into 8 equal parts, tie 8 pencils and draw 8 gradual curves. Then wind the straight line in the opposite direction, and then draw 8 curves in the same way. That is, the helical curve is a toothed gear with 8 teeth.

3) Advantages of involute gears

A little error in the center distance can also be accurately matched, it is easier to get the correct tooth shape, and it is easier to process. Because the scroll mesh is scrolled on the curve, the rotational motion can be transferred smoothly. As long as the teeth are the same size, the tool can process gears with different numbers of teeth. Root coarse, high strength.

4) Basic circle and index circle

The reference circle is the reference circle that forms the involute tooth profile, and the pitch circle is the basic circle that determines the size of the gear. The reference circle and pitch circle are important geometric dimensions of gears. An involute tooth profile is a curve formed outside a basic circle. The pressure angle of the reference circle is zero degrees.

5) Involute gear meshing

The pitch circles of the two standard involute gears mesh tangentially at the standard center distance, and the shape of the two wheels when meshing looks like two friction wheels with pitch circle diameters D1 and D2 are driving. However, quasi-hyperbolic gear manufacturers believe that in fact, the grid of involute gears depends on the basic circle, not the pitch circle.

The meshing contact points of the two gear tooth shapes move along the meshing line in P1-P2-P3 order. Check the yellow teeth of the drive gear. After this tooth begins to mesh, two teeth on the gear mesh (P1, P3) over a period of time. Engagement continues, and if the grid point moves to point P2 on the pitch circle, only one grid tooth remains. The meshing continues, the meshing point moves to point P3, and the next tooth meshes at point P1, again forming a state of two teeth meshing. Thus, the two tooth webs of the gear wheel interact with a single tooth web to repeat the rotational movement.

The common tangent line a 1 B of the basic circle is called the grid line. The meshing points of the gears are all on this meshing line. It is represented by an image, as if the belt intersects the circumference of two reference circles to form a rotary motion to transmit power.