RU2588192C1 - Gear wheel - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in less loaded tooth gears. Gear wheel comprises hub body and toothed rim, made in form of profiled ring from strap with width equal to width of teeth, external profile corresponds to design profile of toothed rim gear wheel. Ring by one end face is secured on body end. Body is made in form of a flat ring connected with hub spokes, outer diameter of flat ring is equal to diameter of circle of tips of toothed rim, and inner diameter of flat ring is equal to inner diameter of profile ring. Pins are fixed at the end of flat ring opposite to mounting face of profiled ring; and outer diameter of pins is equal to outer diameter of flat ring.

EFFECT: optimised gear wheel design.

1 cl, 2 dwg

Description

The invention relates to mechanical engineering, in particular to machine parts, and can be used in gears.

A gear wheel is known to be made integral, in which the body with the hub and the ring gear are manufactured separately, with their subsequent assembly into a single unit, and the ring gear consists of a ring gear with teeth along its outer perimeter - see, for example, “Production of gears: Reference book / S.N. Kalashnikov, A.S. Kalashnikov, G.I. Kogan et al .; Under the total. ed. T.A. Thai. - 3rd ed., Revised. and add. - M.: Mechanical Engineering, 1990. - 464 p.: Ill.

The disadvantage of this design of the gear wheel is that with large-modular teeth, bending loads on the teeth increase, which can lead to their breakage.

As a prototype taken gear design according to the patent for the invention of the Russian Federation No. 2548446, class. F16H 55/12, publ. 04/20/2015, bull. No. 11. Its essence lies in the fact that the gear wheel contains a hub, a body in the form of a flat disk, the outer diameter of which is equal to the diameter of the circumference of the tops of the ring gear; the ring gear is made in the form of a profile ring from a strip with a width equal to the width of the teeth, the outer profile of which corresponds to the profile of the ring gear; and the ring is fixed at one end of the disk with one of its ends.

The disadvantage of the prototype is that the wheel body is made in the form of a solid disk, the outer diameter of which is equal to the diameter of the circumference of the vertices of the gear rim of the wheel. This increases the cost of manufacturing the wheel, which is greater, the greater the value of the outer diameter of the wheel.

The invention solves the problem of optimizing the design of the gear wheel and reducing the cost of its manufacture.

To this end, the gear wheel contains a hub, a body and a gear ring, made in the form of a profile ring from a strip with a width equal to the width of the teeth, the outer profile of which corresponds to the calculated profile of the gear ring of the wheel, and this ring is fixed at one end to the body end; moreover, the body is made in the form of a flat ring connected to the hub by knitting needles; the outer diameter of this ring is equal to the diameter of the circumference of the tops of the ring gear, and its inner diameter is equal to the inner diameter of the profile ring; the spokes are mounted on the end of the flat ring, opposite the end of the mounting of the profile ring; and the outer diameter of the spokes is equal to the outer diameter of the flat ring.

The invention is illustrated by drawings, which depict: a gear wheel (end view) - Fig. 1, the same wheel (side view) - FIG. 2.

The drawing shows: hub 1, flat ring 2, spokes 3, profile ring (ring gear) 4, tops of 5 teeth; diameter D _{in the} circumference of the tops of the ring gear; the radius of the root circle R _ch toothing; the radius R of the inner circle of the flat ring 2 (and the profile ring 4); tooth width B; thickness from the strip from which the profile ring 4 (gear wheel rim) is made.

The gear wheel consists of a hub 1, a body in the form of a flat ring 2 with an outer diameter equal to the diameter of the circle of the peaks D _{in the} gear ring of the wheel; ring 2 is connected to the hub 1 by knitting needles 3 having an outer diameter equal to the diameter D _in (the diameter of the circumference of the tops of the ring gear). A ring gear in the form of a profile ring 4 from a strip with a width equal to the width B of the teeth of the ring gear, the outer profile of this ring corresponds to the calculated profile of the ring gear, and this ring is mounted with one end on the end face of the flat ring 2. The inner diameter of the flat ring 2 is equal to the inner diameter (radius R) of the profile ring. And the spokes 3 are mounted on the end of the flat ring 2, opposite the end of the fastening of the profile ring 4.

Compared with the prototype, the proposed gear design is more optimal. It allows to reduce material costs for the manufacture of the wheel by reducing the material consumption of its body and the wheel as a whole.

Claims (1)

A gear wheel, mainly lightly loaded, large-modular with narrow teeth, containing a hub, a body and a gear ring, made in the form of a profile ring from a strip with a width equal to the width of the teeth, the outer profile of which corresponds to the calculated profile of the gear ring of the gear, and the profile ring is fixed on one end the end of the body, characterized in that the body is made in the form of a flat ring connected to the hub by knitting needles, the outer diameter of the flat ring is equal to the diameter of the circle of the tops of the ring gear, and the inner diameter of the planar ring is equal to the inner diameter of the profile ring, the spokes are mounted on the end of the planar ring, opposite the end of the fastening of the profile ring, and the outer diameter of the spokes is equal to the outer diameter of the planar ring.

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