SU1199981A1 - Pneumatic drive - Google Patents

Abstract

PNEUMATIC DRIVE, containing a power cylinder with a piston and a rod, a flow controller and a piston metering unit, one cavity of which is connected to a power source and exhaust through a switchgear. (and the other, with the working cavity of the power cylinder, communicated with the power supply source and exhaust also through a distribution device, characterized in that, in order to expand the range of force control on the rod, the distribution device is made in the form of two electrically controlled switches and pneumatic control valve installed in the pressure line, outlet and one control line connected through the first switch with the working cavity of the power cylinder, and the other control line with the piston cavity a regulator (L flow rate and a second switch with a power source and exhaust).

Description

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00 The invention relates to mechanical engineering and can be used, for example, to drive a tool in a machine tool industry. The purpose of the invention is to expand the range of force control on a rod. The drawing shows a diagram of the enclosed device. The pneumatic actuator contains a power cylinder 1 with a piston 2 and a rod 3, the working cavity 4 of which is connected to the cavity 5 of the piston metering device 6, the cavity 7 of which is connected to the power source 8 and the exhaust 9 via a reversing switch 10 and a flow regulator t1, pneumatically controlled valve 12, equipped with a differential spring-loaded piston 13 and interacting with it; a spring-loaded valve 14 with it, located with the formation of a cavity 15 connected to the cavity 7 of the dispenser 6, a cavity 16 connected to the working cavity 4 of the power cylinder 1, and a hollow 17, with communicating with the power source 8 via the spring-loaded valve 14 and with the working cavity 4 of the power cylinder.1 through the switch 18, 811 connecting the working band 4 in one of its positions with the exhaust 9. The pneumatic actuator operates as follows. Switching on the switches 10 and 18 POST 7, the dispenser 6 and the cavity 15 of the pneumatically controlled valve 12 are loaded with pressure, and the cavity 17 of the pneumatically controlled valve 12 is connected to the working cavity 4 of the power cylinder 1. When there is no load on the rod 3 of the power cylinder 1 and thereby reducing the pressure The working cavity 4 of the cylinder 1 and in the cavity 16 of the pneumatically controlled valve 12, the piston 13 moves to the right (according to the drawing) and opens the valve 14, together with the working cavity 4 of the cylinder 1 with the power supply 8. When a load occurs on the rod 3 of the cylinder 1, the pressure rises in the working cavity 4 of the cylinder 1 and in the cavity 16 of the pneumatically controlled valve 12, the piston 13 of which moves to the left (according to the drawing), the spring-loaded valve 14 closes, and the pressure in the working cavity 4 of the cylinder 1 is powered by dispenser 6 flow, defined by the controller 11 flow.

Claims (1)

A PNEUMATIC DRIVE containing a power cylinder with a piston and a rod, a flow regulator and a piston batcher, one cavity of which is connected to a power source and exhaust through a switchgear, and the other to a working cylinder of a power cylinder connected to a power source and exhaust also through a switchgear , characterized in that, · in order to expand the range of regulation of effort on the rod, the switchgear is made in the form of two electrically controlled switches and a pneumatically controlled valve, tained in the pressure line, and audio output control line connected through a first switch with working chamber of the actuator, and the other control line - with the cavity of the dispenser piston connected via a flow regulator and a second switch to a power supply and exhaust. SU „..1199981 1 .