SU1293432A1 - Impulse drive - Google Patents

Abstract

The invention relates to mechanical engineering and can be used as a pulse drive in control systems. In order to improve the accuracy of pulse processing by using the toothed stepper mechanism, the latter includes a central crank shaft 6 associated with the control motor 3 and the brake 4 mounted on the crank shaft of the carrier 7 with a conical satellite 8 interacting with the braked central wheel 9. The carrier 7 It is coupled to the coupling motor with the power engine 2. The frequency of the stepping pulses following is controlled by the controlling motor, the total number of pulses per revolution of the crank is equal to the number of teeth of the retarded center nogo wheel. 3 il. (L phi & .g

Description

The invention relates to mechanical engineering and can be used as a pulse drive in software-controlled systems.

The goal is to improve the accuracy of pulse processing by using a toothed step mechanism with less error in the angular step.

Figure 1 shows the kinematic mode of a pulsed drive; Fig. 2 is the same in the multisatellite version of Fig. 3 is a diagram explaining the operation of the drive.

The pulse drive (Fig. 1) comprises a housing 1, a power motor 2, a control motor 3, such as a DC motor, a brake 4, a planetary gear stepper mechanism, including a coupling 5 connected to the control motor 3 and a brake 4, a central crank shaft 6 mounted on the latter and coupled by clutch 5 to the power motor drove 7 to the conical satellite 8 and interacting with the latter central bevel wheel 9 connected to housing 1.

The pulse drive (figure 2) contains a crank shaft with two out-of-phase by 180 bends on. the corresponding carrier 10 and 11 with satellites 12 and 13 are installed (variants of the drive with a large number of carriers with satellites are possible).

Pulse drive works as follows.

In the initial state, with the control engine 3 turned off, the satellite 8 is stuck on the wheel 9 under the action of the power engine 2. This state corresponds to the position A of carrier 7 (FIG. 3). Spontaneous wedging of the satellite 8 under the action of the torque of the power engine 2, which seeks to turn the crankshaft 6, is impeded by the brake 4, the braking torque of which exceeds the given torque on the crank 6.

When the control motor 3 is turned on, its torque coinciding in direction with the torque on crank 6 from the power motor 2 (the total torque exceeds the braking torque of brake 4) causes the crank 6 to rotate. Under this condition, the crank 6 rotation speed and the control motor are the same .

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The wedging of the satellite B occurs after turning the crank 6 to the angle about (fkG: 3). Accordingly, the carrier 7 rotates around the movable axis of the crank by an angle of / 2 and occupies position B (FIG. 3). In this case, the coupling 8 with the shaft of the power engine is rotated by angle 6. With the kinematically correct engagement of the satellite 8 with the wheel 9 as a result of wedging the transmission by crank 6, the carrier 7 together with the satellite 8 under the action of the torque of the power engine 2 rotates around the moving axis o and occupy position C 5 corresponds to a new jamming of the transmission of the satellite 8. In the next phase of the cycle, when rotating the coupling 5 with the shaft of the power engine 2 through the angle V, the average angular velocity of these elements is determined by gonnoy characteristic of the power of the engine 2.

Thus, within one full cycle or step, the jamming of satellite 8 successively processes two output pulses on crank 6. The first of them, processed in the first phase, is low-power due to the fact that the angular velocity of the crank 6 within the angle of rotation through the angle is small. The second output pulse is many times greater than the first, and its power is determined by the power of the power motor 2.

The number of stepped pulses processed per revolution of crank 6 is equal to the number of teeth of the central wheel 9. The frequency of the stepping pulses is controlled by varying the angular velocity of the control motor 3 and, therefore, by changing the processing time of the first phase pulse (angle)

The error in the angular pitch of the crank b is determined by the kinematic precision of the gear toothed mechanism,

The operation of the drive in the multisatellite version (Fig. 2) is carried out together.

Instead of brake 4 in the drive, a self-locking transmission can be used, for example a worm.

The edge effect during the jamming of the teeth of the satellite 8 can be weakened by the use of both a self-aligning satellite and

due to the longitudinal modification of the teeth (barreling).

The application of the invention makes it possible to increase the accuracy of the processing of pulses by using a toothed step mechanism having a smaller error in the angular step as compared with the step motor.

Claims (1)

Invention Formula A pulse drive comprising a housing, a power train, and a control motor; a gear drive associated therewith and 0 five a brake, characterized in that, in order to improve accuracy, the gears are transmitted in the form of a planetary stepping mechanism, including a clutch connected to the control motor and brake, a central crank shaft mounted on the latter and connected to the power motor at least one driver with a conical satellite and a central conical wheel interacting with the latter, connected to the housing, and a direct current electric motor is used as a control motor. Fib.Z Editor L. Veselovska Compiled by O. Kosarev Tehred MoHodanich Order 365/38 Circulation 812 Subscription VNRSHPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5  Production and printing company, Uzhgorod, st. Project, 4 Proofreader S. Shekmar