RU2241162C2 - Gearing - Google Patents

Gearing Download PDF

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Publication number
RU2241162C2
RU2241162C2 RU2003100197/11A RU2003100197A RU2241162C2 RU 2241162 C2 RU2241162 C2 RU 2241162C2 RU 2003100197/11 A RU2003100197/11 A RU 2003100197/11A RU 2003100197 A RU2003100197 A RU 2003100197A RU 2241162 C2 RU2241162 C2 RU 2241162C2
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RU
Russia
Prior art keywords
driven wheel
tooth
wheel
gear
turn
Prior art date
Application number
RU2003100197/11A
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Russian (ru)
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RU2003100197A (en
Inventor
О.Л. Подгаевский (RU)
О.Л. Подгаевский
Г.В. Жужжалкин (RU)
Г.В. Жужжалкин
Е.Е. Макарьев (RU)
Е.Е. Макарьев
Original Assignee
Открытое акционерное общество АК "Туламашзавод"
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Priority to RU2003100197/11A priority Critical patent/RU2241162C2/en
Publication of RU2003100197A publication Critical patent/RU2003100197A/en
Application granted granted Critical
Publication of RU2241162C2 publication Critical patent/RU2241162C2/en

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Abstract

FIELD: mechanical engineering.
SUBSTANCE: tooth of driving wheel (1) of the gearing is made of a single-turn helicoid having the equilateral trapezium profile in the normal section of the turn. The tooth of the driving wheel engages tooth (4) of driven wheel (2) whose screw lead t is equal to the lead of the driven wheel (2) at diameter d passing through the mid-width of the gearing rim b and is determined from the relationship t=
Figure 00000005
d/Z, where t is the lead in engaging, d is the diameter passing through the mid-width of the gearing rim of the driven wheel, and Z is the number of hollows in the driven wheel.
EFFECT: improved design.
2 dwg

Description

The invention relates to mechanical engineering and can be used in spatial gearing between orthogonal intersecting axes to transmit rotation and torque.
The analysis of the prior art in this field showed that a gear is known that is closest in terms of the technical problem being solved and is the prototype of the proposed technical solution, containing a driven wheel with flat working surfaces, the cavities between the teeth of which are made radial, equally wide and equally deep, and the driving wheel with an equally high tooth (RF patent No. 2193707, IPC F 16 N 55/00, 55/08).
The teeth of the driving and driven wheels can be cut by copying on a CNC machine tool or on a universal milling machine using a dividing head and a fairly simple tool. This tool for cutting the driven wheel is a conventional two-angle mill. It is possible to cut the hollows of the driven wheel with a single-turn worm cutter, and the teeth of the drive wheel with a standard worm cutter on a gear-milling machine.
A disadvantage of the known gear transmission is the inability to provide large gear ratios due to the increase in size.
The objective of the invention is to create a spatial gear transmission between a single-turn helicoid and a flat wheel with improved performance due to the rational choice of the parameters of the hollows of the flat wheel and the transverse dimensions of the spiral of the helicoid, simplifying the manufacturing process of the gear due to the rejection of the use of special gear machines.
The specified technical result is achieved by the fact that the tooth of the driving wheel is equally high and made in the form of a single-turn helicoid with a transverse equal-sided trapezoidal profile in the normal section of the turn, while the tooth of the driving wheel mates with the tooth of the driven wheel and has a screw pitch equal to the pitch of the driven wheel on the diameter passing through the middle of the width of the ring gear, and determined from the dependence
Figure 00000003
where t is the pitch in engagement, d is the diameter passing through the middle of the width of the gear ring of the driven wheel; Z is the number of cavities of the driven wheel.
The proposed technical solution is illustrated by drawings, where Fig. 1 shows a gear in working gear and a section A of a tooth cavity of a driven wheel; figure 2 shows a view of the transmission from above and section B of the profile of the tooth of the helicoid.
The gear transmission consists of a driving wheel 1 and a driven wheel 2. The axis of rotation of the driving wheel and the driven wheel are intersecting orthogonally, that is, on the diameter d of the driven wheel 2, the rotation axes intersect at right angles. The drive wheel (helicoid) is made with hard base, determined by the diametrical size d of the driven wheel 2 (Fig.1, 2). By helicoid is meant a helical surface of a constant step t. On the drive wheel there is an equally high tooth 3, made in the form of a single-turn helicoid with a transverse equilateral trapezoidal profile in a normal turn section (Fig. 2). On the driven wheel 2 there are raznosirokie teeth 4 with flat working surfaces, the hollows between the teeth are made radial, equally wide and equally deep (figure 2).
The gear transmission operates as follows.
The driving wheel 1 is engaged with the driven wheel 2, while the helical coil having a transverse profile of an equilateral trapezoid is mated with the tooth cavity of the driven wheel 2, made in the form of an isosceles trapezoid. The profiles are mated along the height of the teeth. The drive wheel 1 is made in the form of a sleeve with an external coil, or the coil is profiled along the shaft. The driving wheel 1, rotating, drives the driven wheel 2. The driven wheel rotates 1 / Z in one revolution of the driving wheel (Z is the number of hollows of the flat wheel). The transmission is reverse, i.e. the rotation of the drive wheel can be either right-handed or left-handed. Torque is applied to the shaft on which the drive wheel 1 is located, and is removed from the shaft of the driven wheel 2.
The proposed design of the gear transmission provides optimization of transmission parameters during its design (optimization of contact stresses, overall dimensions, etc.), ease of manufacture and installation, rejection of special equipment and the use of turning and milling machines.

Claims (1)

  1. A gear transmission containing a driven wheel with flat working surfaces, the hollows between the teeth of which are made radial, equally wide and equally deep, and a driving wheel with an equally high tooth, characterized in that the tooth of the driving wheel is made in the form of a single-turn helicoid with a transverse equilateral trapezoidal profile in a normal turn section , while the tooth of the drive wheel mates with the tooth of the driven wheel and has a pitch of the screw equal to the pitch of the driven wheel on a diameter passing through the middle of the width of the ring gear, and determined by the following relationship:
    Figure 00000004
    where t is the pitch in meshing;
    d is the diameter passing through the middle of the width of the gear ring of the driven wheel;
    Z is the number of cavities of the driven wheel.
RU2003100197/11A 2003-01-04 2003-01-04 Gearing RU2241162C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2003100197/11A RU2241162C2 (en) 2003-01-04 2003-01-04 Gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2003100197/11A RU2241162C2 (en) 2003-01-04 2003-01-04 Gearing

Publications (2)

Publication Number Publication Date
RU2003100197A RU2003100197A (en) 2004-07-10
RU2241162C2 true RU2241162C2 (en) 2004-11-27

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RU2003100197/11A RU2241162C2 (en) 2003-01-04 2003-01-04 Gearing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2487283C1 (en) * 2009-06-12 2013-07-10 Итон Корпорейшн Differential gear with end gears and torque transmitting ring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2487283C1 (en) * 2009-06-12 2013-07-10 Итон Корпорейшн Differential gear with end gears and torque transmitting ring

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Effective date: 20180105