SU187470A1 - DEVICE FOR OBTAINING Oscilli cis - Google Patents

Description

Known mechanisms of oscillating (reciprocating) movements, working on hydraulics. These mechanisms, however, do not allow an oscillation of the order of fractions of a millimeter, and also have a significant variation in the amplitude of oscillations.

There are cases where the amplitude of oscillation has high requirements for stability, for example when grinding rings of shoulder bearings.

The proposed device for obtaining oscillations with a limited (including small) amplitude makes it possible to obtain reciprocating movements with an amplitude of 0.1-0.15 mm and higher between rigid adjustable stops.

The drawing shows the proposed device.

A device for receiving oscillations with a limited (including small) amilitude consists of a ram / with an adjustable stop 2, controlled by a reversing slide valve 5; a stop spool consisting of a control, its 4 and a controllable 4 spools, between which the throttle 5 is included, which regulates the delay of command execution (i.e., amplitude); additional cylinder 6 with adjustable stop 7; throttle 8 connected between the cavity of the power and auxiliary cylinders, regulating

oscillation rate; the stop 9 acting on the electrical sensor 10.

The device works as follows.

When the reverse spool is in the forward position, the oil is fed under pressure into the forward cavity of the ram and into the cavity of the auxiliary cylinder. The power cylinder moves forward, its emphasis acts on the rod of the additional cylinder and cocks it against the stop in the cover of the additional cylinder. In this case, the cam of the power cylinder triggers the electrical limit switch (sensor), which gives the command to activate the stop valve. The stop valve connects the second cavity of the power cylinder with pressure, while the additional cylinder moves the power cylinder by the amount of its stroke, moving the system backward. As the cam moves backwards, the cam releases the electrical sensor, and the command is removed from the stop spool. The actuation of the stop spool is delayed in time by the choke connected to the end cavity of the stabilized stop spool. During this time, the course is reversed. When the stop valve is activated, the cycle is repeated. Thus, the oscillation is carried out on the stroke of the additional cylinder and is limited by its rigid stops.

Subject invention

Claims (3)

I. A device for obtaining oscillations with a limited amplitude (including a small one), containing a power cylinder with an adjustable stop, a control cylinder of a power cylinder, a stop valve with a throttle between control and control spools, characterized in that in order to obtain an oscillation with a guaranteed limited amplitude (including a small one) and obtaining the oscillation speed automatically only at a stroke of the cylinder equal to the oscillation amplitude, an additional cylinder with an adjustable stroke is introduced, the cavity of which the first cavity is connected to the power cylinder via a throttle which regulates the speed of the oscillations, so that the auxiliary cylinder schtok contact with special adjustable stop of the power cylinder at the end of the stroke of the latter (only in the oscillation zone). 2. The device according to claim 1, characterized in that, in order to simplify the hydraulic system, an electric limit switch is applied to the device's reverse sensor, which is operated by the main cylinder cam only in its forward position, and for the reverse "forward stop spool" was used, delaying the execution of the reverse command "forward" for the time required for the system to move backward. 3. A device according to claim 1, characterized in that, in order to simplify the system, instead of the electric limit switch (sensor), the control part of the stop spool is used.