SU1279680A1 - Vibration exciter - Google Patents

Abstract

The invention relates to a vibration technique and can be applied in mechanical engineering for vibrating machining of parts. The aim of the invention is to increase the durability of the vibration exciter. In the housing 1 there is a rotor 8 with tangential and A. OG iS 20/6 18 axial nozzles, a spool 18 in the spool sleeve 14, on which an interrupter 15 is installed, and an actuator 21. The working fluid supplied to the rotor 8 flows out of the tangential nozzles and spins it. At the same time, the fluid, which has exhausted from the axial nozzles, while rotating the rotor periodically interacts with the chopper 15 and causes the axial-axial movement of the rotor 8 and the spool 18 associated with it. As a result, the cavity 7 under the actuator 21 is periodically connected to the high-pressure line, which causes fluctuations of the executive body 21. 4 sludge. (L 1 21 I I / S SO O5 00 Figure 2

Description

The invention relates to a vibration technique and can be used in mechanical engineering for the vibration treatment of parts.

The aim of the invention is to increase the durability of the exciter by eliminating friction between the spool and chopper input signal generator,

Figure 1 shows the vibration exciter with the Executive body in the form of a membrane, a general view; figure 2 - the same, with the Executive body in the form of a piston; figure 3-flow aa in figure 2; figure 4 - section bb in figure 2.

The vibration exciter consists of a housing 1 in which an annular chamber 2 is made, a distributor 3 with an inlet 4 and an outlet 5 channels of high-pressure working fluid, as well as a communication channel 6 through which the working fluid enters the membrane or subsurface cavity 7 and an input signal generator of the spool in the form of a rotor 8 mounted on a sleeve 9, according to which a low-pressure working fluid is throttled from the high-pressure line. The rotor 8 is made with tangential 10 and axial 11 nozzles communicating through channels 12 and 13, respectively, with a low pressure line, coaxially with the rotor 8 at the spool valve.

the sleeve 14 has an interrupter 15 with protrusions 16, which, interacting with the grooves 17 of the sleeve 14, keep the interrupter from rotating. Moreover, the interrupter 15 is installed with respect to the end of the rotor 8, on which axial holes 11 are made, with a gap of up to 0.1 mm. In the spool bushing 14 there is a spool 18 with a spring 19, interacting with the rotor 8 through an adjustable ball stop 20, which allows to compensate for possible misalignment of the rotor 8 relative to the spool 18, the Executive body is made in the form of a membrane 21 (Fig. 1) or a piston 22 (Fig .2) with spring rod 23.

Vibro works as follows.

Low pressure working fluid (0.05–0.1 MPa), throttled from the high pressure line (up to 3 MPa), through channel 12 of the rotor 8 post 20

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It goes to the tangential nozzles 10 and, due to the creation of the rotational moment, spins the rotor 8. At the same time, the working fluid through the channel 13 goes to the axial nozzles 11.

 When the rotor 8 rotates, the axial nozzles 11 periodically overlap the chopper 15, which leads to a periodic change in the axial force by. rotor 8. As a result, the rotor 8 oscillates in the axial-axial direction. These oscillations are transmitted through the ball stop 20 to the spring-loaded spool 18. Since in the initial position of the input signal generator, the spool 18 reports a tap — w; channel 5 with communication channel 6, the pressure in cavity 7 is equal to the pressure in the exhaust channel 5, the axial nozzles 11 of the rotor 8 intersect with the chopper 15 of the axial force reaching its maximum value, as a result of which the rotor 8, together with the spool 18, stretching the spring 19, moves away from the chopper 15. In the opened feed channel 4 the working fluid is high pressure supplied through channel 6 in the communication cavity 7 prognuv membrane 21 or sliding piston 22, thus compressing spring 23, rod.

When the axial nozzles 11 of the rotor 8 leave the zone of interaction 1-5 with the interrupter 15, the axial force acting on the rotor 8 is reduced to the minimum. As a result, the spring 19 returns the rotor 8 with the spool 18 to the initial position. In this case, the working fluid from the cavity 7 is expelled during the return stroke of the membrane 21 or the piston 22, which occurs under the action of the spring of the rod 23, through the communication channel 6 into the discharge channel 5.

As a result of the interaction of the rotor with the chopper by means of active liquid jets between them, there is no friction, which increases the durability and operation of the vibrator.

Claims (2)

The invention relates to a vibration technique and can be used in mechanical engineering for the vibration treatment of parts. The aim of the invention is to increase the durability of the vibration exciter by eliminating friction between the input signal generator of the spool and the chopper. Figure 1 shows the vibration exciter with an actuator in the form of a membrane, a general view; figure 2 is the same, with the Executive body in the form of a piston; figure 3-flow aa in figure 2; 4 shows a section B-B in FIG. 2. The vibration exciter consists of a housing 1 in which an annular chamber 2 is made, a distributor 3 with a submerged 4 and an outlet 5 channels of high-pressure working fluid, as well as a communication channel 6 through which the working fluid enters under the membrane or podporshnevuyu cavity 7, and the input signal of the spool in the form of a rotor 8 mounted on the sleeve 9, on which the low-pressure working fluid is throttled from the high-pressure line. The rotor 8 is made with tangential 10 and axial 11 nozzles communicating via channels 12 and 13, respectively, with a low pressure line. Coaxially to the rotor 8 on the slide sleeve 14, an interrupter 15 is installed with projections 16 which, in cooperation with the slots 17 of the sleeve 14, keep the interrupter from rotating . Moreover, the interrupter 15 is installed in relation to the end of the rotor 8, on which axial holes 11 are made, with a gap of up to 0.1 mm. A spool 18 with a spring 19 is located in the spool sleeve 14, interacting with the rotor 8 through an adjustable ball stop 20, which makes it possible to compensate for possible misalignment of the rotor 8 relative to the spool 18, the Executive Body is made in the form of a membrane 21 (Fig. 1) or a piston 22 (Fig.2) with a spring-loaded rod 23. The vibration exciter works as follows. Low-pressure working fluid (0.05–0.1 MPa), throttled from the high-pressure line (up to 3 MPa), through channel 12 of the rotor 8 flows to the tangential nozzles 10 and, by creating a torque, spins the rotor 8. At the same time, the working fluid Channel 13 enters the axial nozzles 11. When the rotor 8 rotates, the axial nozzles 11 periodically overlap with the chopper 15, which causes a periodic change in the axial force. rotor 8. As a result, the rotor 8 oscillates in the axial-axial direction. These oscillations are transmitted through the ball stop 20 to the spring-loaded spool 18. Since in the initial position of the input signal generator, the spool 18 reports rejection w; channel 5 with communication channel 6, the pressure in cavity 7 is equal to the pressure in exhaust channel 5, - When closing the interrupter 15 of the axial nozzles 11 of the rotor 8, the axial force reaches its maximum value, as a result of which the rotor 8, together with the spool 18, stretching the spring 19, moves away from the interrupter 15. On the opened feed line 4, the working fluid is high The shaft enters through the communication channel 6 into the cavity 7, bending the membrane 21 or moving the piston 22, compressing the spring of the rod 23. At the exit of the axial nozzles 11 of the rotor 8 from the interaction zone with the interrupter 15, the axial force acting on the rotor 8 decreases to the minimum. As a result, the spring 19 returns the rotor 8 with the spool 18 to the initial position. In this case, the working fluid from the cavity 7 is expelled during the return stroke of the membrane 21 or piston 22, which occurs under the action of the spring of the rod 23, through the communication channel 6 into the discharge channel 5. As a result of the interaction of the rotor with the chopper by means of active jets of liquid between them friction, which increases durability, works vibrobozbuditel. "Claim of the invention: Vibro-exciter, comprising a housing, an actuator, supply and discharge channels of a high-pressure working fluid, and a spool installed in the housing and a generator | Inlet signal of the spool, about 1 and .1 m. a y u u and so that, with a view Durability of operation, it is equipped with a chopper installed coaxially with the input signal generator of the spool, the generator is designed as a rotor with tangential and axial nozzles and installed with the possibility of axial displacement relative to the chopper. iO 12 6 1 21 / 5 20 p / / / / / / 23  3 1 i3 ChRig.Z B b is W2