Planet gearing mechanism

FIELD: mechanical engineering.

SUBSTANCE: planet gearing mechanism comprises shaped gear rack (9), base (1) with guides for longitudinal movements of the rack, rotatable lever (5) with gear wheel (4), and driving gear wheel (10). Shaped rack (9) has guides with flat (7) and profiled surfaces (2) and (8). The axis of rotation of wheel (10) passes through shaped rack (9), is in coincidence with the axis of rotation of lever (5), and transmits motion to shaped rack (9) through gear wheel (4) of rotatable lever (5). Rotatable lever (5) has bearings (3) and (6) which move individually over flat (7) and profiled (2) and (8) surfaces of rack (9).

EFFECT: simplified structure.

2 dwg

 

Gear planetary gear with curly rake refers to the toothed rack and pinion mechanism with a reciprocating slats.

Known similar mechanisms, such as gear-lever mechanism with a shaped rail No. 2277 (II Artobolevsky I.I. Mechanisms in modern engineering volume IV 1980).

The disadvantages of the known devices is the inability to use one drive shaft for multiple devices and complex movement of the slats in the extreme positions.

The technical result of the application of the planetary gear mechanism shaped rail is to eliminate the disadvantages of known devices and simplify the design. This result is achieved by timing the figure plots the rack 9: two direct and two arcs in turn engages with a gear wheel 4 of the rotary lever 5, the supports 3, 6 which, moving in a direct and profile of the guide surfaces 2, 7, 8 curly toothed rack 9, ensure the continuous functioning of the mechanism.

Figure 1 shows the design planetary gear mechanism with curly rail and external toothing, and figure 2 - internal link.

Gear of the planetary mechanism (1, 2) consists of a symmetric figure toothed rack 9 with a flat guide surface 7 and core (arc) directing surfaces 2, 8, ve is the current toothed wheel 10 and the pivot arm 5, the axis of rotation of which coincides with the axis of rotation of a leading gear wheel 10 (in figure 2 the lever translucent). The rotary lever 5 has a gear wheel 4 and the seat 3, 6. Curly rail 9 is formed by two linear toothed sections and two toothed arcs B has a flat 7 and profile 2, 8 the guiding surfaces. Linear plots And Reiki 9 together with the toothed wheel 4 and fixed on these areas of the pivoting arm 5 is formed of conventional gearing. Arc B Reiki 9 together with the toothed wheel 4 rotates on these sites lever 5 form of planetary gearing. All the details of the mechanism are mounted on the base 1 with the guide for longitudinal movement of the rack 9. When performing mechanism with an external relative to rail link (figure 1) gear 4 lever 5 has two gear diameter, with an internal toothing (2) - one. (If the execution of the mechanism of figure 1 to make the wheel 4 of the lever 5 with one gear diameter, under the terms of the engagement, the diameters of a leading gear wheel 10 and the toothed arc B Reiki 9 should be equal, and the gear ratio according to the formula of the planetary gearing is zero and the mechanism will not work.)

During movement of the rail 9 along the guide surface of the base 1 gear wheel 4 of the lever 5 meshed with the leading toothed wheel 10 and l is nanim toothed section And the rail 9. The lever 5 is stationary, since the supports 3, 6 are moved along the flat guide surface 7 of the rail 9. When the axis of a leading gear wheel 10 coincides with the axis of the arc B of a support 3, 6 of the lever 5 is switched to the profile rails 2, 8 slats 9. Reiki 9 stop lever 5 starts to rotate. It supports 3, 6 provide the meshing gear wheels 4 swivel arm 5 with the leading toothed wheel 10 and the toothed arc B of the rail 9. The lever 5 becomes the planet carrier, displacing the toothed wheel 4 is eccentric relative to the arc B of the rail 9. When the lever 5 each of its legs 3, 6 moves in its profile of the guide surface 2 or 8 figure Reiki 9, not allowing the rail 9 to be displaced relative to the axis of a leading gear wheel 10. After rotation of the lever 5 by 180 degrees toothed wheel 4 lever 5 reaches the linear section And on the opposite side of the rail 9. Support 3, 6 of the lever 5 is transferred on a flat plot 7. The rail 9 will begin to move in the opposite direction. Flat guide surface 7 provides longitudinal movement curly Reiki 9 in the slide base 1.

Gear planetary gear with curly rack containing figured the rack, the base guides the longitudinal movement of the rack, swivel arm with gear wheel, drive sprocket, the axis of rotation which passes skvoz the curly rail inside her, coincides with the axis of rotation of the lever and transmits motion curly rail via a gear wheel rotatable lever, characterized in that figure, the rail has an additional rails flat and shaped surfaces, and the rotary lever has spaced on either side of its longitudinal axis support that move each of his flat and shaped surfaces of the guide figure Reiki.



 

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FIELD: mechanical engineering.

SUBSTANCE: planet gearing mechanism comprises shaped gear rack (9), base (1) with guides for longitudinal movements of the rack, rotatable lever (5) with gear wheel (4), and driving gear wheel (10). Shaped rack (9) has guides with flat (7) and profiled surfaces (2) and (8). The axis of rotation of wheel (10) passes through shaped rack (9), is in coincidence with the axis of rotation of lever (5), and transmits motion to shaped rack (9) through gear wheel (4) of rotatable lever (5). Rotatable lever (5) has bearings (3) and (6) which move individually over flat (7) and profiled (2) and (8) surfaces of rack (9).

EFFECT: simplified structure.

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EFFECT: simplified assembling.

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EFFECT: improved structure.

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EFFECT: improved efficiency of machine in operation.

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