SU1397241A1 - Clamping device provided with pneumatic hydraulic booster - Google Patents

Abstract

The invention relates to the machining of materials by cutting, namely to a clamping device with a pneumohydraulic booster for machine tools. The invention makes it possible to shorten the time for fixing and detaching parts. In the sleeve 20 with covers 8 and 19, hydraulic and pneumatic pistons 4 and 5 are placed. The cover 8 is screwed into the housing 8 with a spring-loaded support 10, an adjusting screw 13, a flywheel 14 and an auxiliary piston 18. The spring-loaded ball 15 of the flywheel 14 interacts with the walls of the wells of the outer cylindrical surface of the housing 9. When compressed air is supplied to the pneumatic cavity B, the pneumatic piston 5 moves with the hydraulic piston 4 and the fluid is fed under high pressure into the hydraulic cylinder of the part clamp. To adjust the stroke of the pneumatic valve 5, after clamping the first part, the flywheel 14 supplies the stop 10 to the end of the pneumatic piston 5 and presses the spring 12 until a moment occurs that causes the flywheel 14 to rotate relative to the housing 9. 3 Il. I (L

Description

00

with

Hche

four

The invention relates to the processing of materials by cutting, namely to clamping devices with a pneumatic-hydraulic amplifier for machine tools.

The aim of the invention is to reduce the time for fixing and detaching parts.

FIG. 1 shows a pneumatic1: pneumatic diagram of a clamping device with a pne: power amplifier; in fig. 2 - pneumohydraulic amplifier, longitudinal section; on

FIG. 3 shows section A-A in FIG. 2

The pneumatic-hydraulic circuit consists of a control valve 1 connected by pipeline through a non-return valve 2 to a pneumatic; Matical cavity B pneumohydrous-1 body 3, made in the form of a differential-type piston pump having; hydraulic valve 4, pneumatic valve 5 and return spring 6.

i Hydro in Nnevmogidrousilitel

3 pressure coupled to hydraulic

; cylinder 7 clamp. Pneumatichydraulic: Cue pressure booster 3 from the pneumatic cavity B is equipped with a lid 8,

into which is screwed by means of the threaded 25th. The first end of the torpus 9 determines the connection of the housing 9. In the Cylindrical p. pneumatic piston 4 and 5 when unclamping the cavity of the housing 9, an emphasis 10 is inserted from the axis of the machined part and is chosen based on the need to separate the clamping elements of the device to release the adjustment of the stroke of the pneumatic actuator 5 of the pneumohydraulic amplifier 3 and the hydraulic cylinder 7 of the clamp after clamping the first part of the same batch but the dimension of the parts by the flywheel 14 is brought to the stop 10 to the end of the pneumatic piston 5 and is pressed by the spring 12 until a moment occurs causing the ball 15 to be released from the hole E of the housing 9 and turning the flywheel 14, avshiys gap G between the end of the UPR .20

void gap G, which allows axial movements, which limits the pin 11, fixedly mounted in the housing 9 and installed in the groove of the support 10.

Between the stop 10 and the housing 9 there is a compression spring 12, pressed by an adjusting screw 13 screwed into the housing 9 by means of a threaded connection

thirty

hoists from clamp and for free entry

following detail, and the stroke should be minimal to reduce idle losses, movements 4 and 5.

Attached to the housing 9 is an auxiliary box 18 when the stop 10 is applied to adjust the force of the spring 12. An outer cylindrical surface of the D - housing 9 is equipped with a flywheel 14. The ball 15, the spring 16, the cap 17 are installed in the radial hole of which. The cylindrical surface D has holes E

those with body 9, keeping the minimum volume of the pneumatic cavity filled with compressed air.

R

Gap

automatically maintained

interaction with the ball 15, transmitting 40 when working on any size processing torque from the flywheel 14. The ratio of the axial force from the transmitted torque of the flywheel 14 and the force of the spring 12 installed in the cavity of the housing 9 provides the gap E between the end of the housing 9 and the collar stop 10, which is equal to the stroke of the hydraulic cylinder 7 clamp.

With housing 9, through its outer smooth cylindrical surface W, the auxiliary gaps 18, mounted in the pneumatic cavity, and limiting the filling of the volume of pneumatic cavity B with compressed air wheels Krncki 8 and 19, are fixedly attached to the sleeve 20.

Pneumo-hydraulic amplifier works as follows.

When compressed air is supplied through a control valve I and a check valve 2 into the pneumatic cavity B, pneumohydraulic45

50

details and is determined by the ratio of the forces of interaction of the transmitted torque and the spring 12 of the stop 10. It provides a reduction in the course of the hydraulic and non-piston 4 and 5 of the hydraulic amplifier and the piston of the clamping hydraulic cylinder 7 and, consequently, the time for fixing and detaching parts.

Claims (1)

Invention Formula A clamping device with a pneumohydraulic amplifier, containing a sleeve with lids, inside which are made main and hydraulic cavities for accommodating immobilized and hydroportable, characterized in that, in order to improve performance by reducing the time for fixing and detaching parts, the device is equipped with a housing installed with age 5 times The end face of the Torpus 9 determines the Ho d r. pneumatic piston 4 and 5 when unclamping the workpiece and choosing, based on the need to dilute the clamping elements of the device to release the dego amplifier 3 pneumatic puff 5 moves with the hydraulic sleeve 4 and a high pressure is created in the hydraulic cavity B due to the difference in area of the pneumatic and hydraulic pulses 4, when this spring 6 is compressed, the hydraulic cylinder 7, the clamping ra 7 moves to the workpiece (not shown), it is clamped. The unclamping of the part takes place by dropping air from the pneumatic cavity B of the pneumohydraulic booster 3 into the atmosphere through the control valve 1. In this case, the hydraulic valve 4: is pulled out of the hydraulic cage by the spring 6, the fluid is sucked out of the hydraulic cylinder 7 of the clamp, the brush of which moves 5 from the clamp position. To adjust the pneumatic push 5 of the pneumatichydraulic amplifier 3 and the cylinder of the clamp 7 after clamping the first part of a batch of identical but the size of the flywheel 14, the stop 10 is supplied to the end of the pneumatic piston 5 and is pressed by the spring 12 until a moment causing the ball 15 to depress the holes E of the housing 9 and the turning of the flywheel 14, the remaining gap G between the end face thirty hoists from clamp and for free entry following detail, and the stroke should be minimal to reduce idle losses, movements 4 and 5. The auxiliary port 18 fixed on the housing 9 when the stop 10 is supplied to the end face of the pneumatic assembly 5 mixes in those with body 9, keeping the minimum volume of the pneumatic cavity filled with compressed air. R Gap automatically maintained five 0 details and is determined by the ratio of the forces of interaction of the transmitted torque and the spring 12 of the stop 10. It provides a reduction in the course of the hydraulic and non-piston 4 and 5 of the hydraulic amplifier and the piston of the clamping hydraulic cylinder 7 and, consequently, the time for fixing and detaching parts. Invention Formula A clamping device with a pneumohydraulic amplifier, containing a sleeve with lids, inside which are made main and hydraulic cavities for accommodating immobilized and hydroportable, characterized in that, in order to improve performance by reducing the time for fixing and detaching parts, the device is equipped with a housing installed with the possibility of axial movement by means of a threaded connection on the cover from the side of the pneumatic cavity, adjustable screw, flywheel with a spring-loaded ball, auxiliary piston and sub dinner suppression, with a cavity in the housing, internal threaded and external cylindrical surfaces, on one of which there are holes, the adjustable screw is placed in the housing and designed to interact with the spring-loaded support located in the cavity of the housing, the spring flywheel the walls of the hole surface of the housing, and the auxiliary piston is placed in the pneumatic cavity and mounted on the cylindrical surface of the housing. In atmosphere F1lg.1 A a .З