SU1608386A1 - Toothed gearing - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in power drive devices. The purpose of the invention is to increase the transmission capacity by eliminating edge contact. In the gearing, the output link is made in the form of a circular cylindrical rack and a gear-globoid in cross section, passing through the axial perpendicular p and perpendicular to the axis of the circular toothed cylindrical rack. The circular cylindrical rail has the ability to move along its axis, which forms a certain angle with the axis of the wheel, and has the ability to freely rotate around its axis. 2 hp f-ly, 7 ill.

Description

The invention relates to mechanical engineering and can be used in power drive devices.

The purpose of the invention is to increase the transmission capacity by eliminating possible edge contact of the teeth.

Fig. 1 shows a transmission with a globoid gear wheel; figure 2 - section a-Anafig, 1; FIG. 3 is a section BB in FIG. 2; Fig. 4 is a sectional view BB in Fig. 2: in Fig. 5 a circular cylindrical gear rail; Fig. 6 shows a circular cylindrical staff with removable teeth; Fig.7 - transmission with two circular cylindrical slats.

The gear train (Fig. 1) has a circular cylindrical gear bar 1, a gear wheel 2, whose tooth profile in section AA, passing through an axial perpendicular to the G-H transmission, and along gear cylindrical bar 1, is made

involute (Fig. 4), in section B-B, passing through an inter-axial perpendicular to the GG and perpendicular to the axis of the rail Oi-02, is globoid, a circular cylindrical cogged rail 1 (Fig, 4) is made with a trapezoidal profile 3, the profile 4 of the wheel 2 (FIG. 3) in sections K — K (FIG. 2) that do not pass through the center axis perpendicular to the G-D and extend parallel to the axis Oi-Oi of the toothed cylindrical rod 1, is made around the conical surface 5 This section, the width of the gear 2 is equal to the diameter df of the cavity of the toothed cylindrical rack 1 (figure 5).

The circular cylindrical rack 1 (Fig.6) is made with removable teeth in the form of separate teeth 6, each of which is a turn of cylindrical rack 1 mounted on bearings 7 and between the turns 8 has a device for adjusting the pitch between them can be made of

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with

oh oh

00

with

00

about

set of washers or threaded, having a thread on the axis of the rail and nuts.

In the transmission, several circular cylindrical gear racks 1 are installed in different planes and from different sides with respect to wheel 2 (FIG. T).

The transmission works as follows.

When the wheel 2 is rotated (Fig. 1), the circular gear is cylindrical bar 1 moving along its axis. At the same time, the gear wheel 2, formed by a globoid one, touches the toothed cylindrical rack 1 with a trapezoidal profile along an arc, one of the points of which belongs to the involute in a cross section passing through the center gear axis and along the cylindrical rack, and the other points of the arc enveloping the profile m in sections that do not pass through the axial perpendicular and run parallel to the rail axis. In the process of engagement of the circular toothed cylindrical rod 1 with the wheel 2, the arc of contact rolls from the top of the profile to its leg (or in the opposite direction). In this case, the cylindrical circular gear 1, due to the friction between it and the wheel 2, is able to freely rotate around its axis Oi-0i, which contributes to the participation in the work of various tooth segments and, ultimately, leads to an increase in transmission efficiency. The increase in load transfer capacity is also due to the linear nature of the contact along the arc of a circle.

During the rotation of the gear 2, each tooth 6 of the toothed cylindrical slats .1 (fig.b). mounted on bearings 7, has the ability to independently rotate around the axis of the toothed cylindrical rail 1, which contributes to a more uniform wear of each tooth 6, and hence increase the transmission strength as a whole.

When the wheel 2 (Fig. 7) rotates around its axis 02-02, the rails 1 move in different planes located on different sides of the gear, which allows several actuators to be driven. In this case, the toothed cylindrical rails 1 are in contact with the toothed wheel 2 along a line, which allows increasing the load capacity of the transmission. The increase in the load capacity of the transmission contributes to the ability to freely rotate around the axes Oi-0i of the toothed racks 1, since this leads to a decrease in friction and wear and an increase in efficiency,

Claims (3)

1. A gear transmission containing a circular cylindrical rod with a shaft and a gear wheel with an involute tooth profile in a cross section passing through an axial transmission perpendicular p, characterized in that, in order to increase the transmission capacity of the gear, the gear wheel is made globoid and the tooth surface wheels in cross sections lying on both sides of the plane passing through the axial perpendicular p, matched with the surface of the rack teeth, the width of the gear wheel is equal to the diameter of the rail bottom, and the profile of the rack teeth is made trapezoidal 2. Zubchat transmission according to claim 1, of which is, in order to increase efficiency. the teeth of the lath are made removable and mounted with the possibility of free rotation relative to the shaft of the lath and axial movement and fixation, 3. Zubchat transmission according to claim 1, characterized in that the transmission is equipped with an additional rail, similar to the main and installed on the other side of the gear. Shchi2.1 TL M. F // 2.3 V / - " 0 wed (/ r5 F // th .. FIG. 6 Oi.n. V 02 R R5 r FIG. 7