SU1618505A1 - Apparatus for track control - Google Patents

Abstract

The invention relates to control devices for hydraulic mechanisms, in particular, to control devices for traveling throttle. machine tools, and can be used, for example, in controlling a turret head operating in a turn-stop-turn cycle. The aim of the invention is

Description

The invention relates to control devices for hydraulic mechanisms, in particular, to control devices for traveling throttles of metal-cutting machines and can be used, for example, in controlling a turret headstock operating in a turn-stop-turn cycle.

The purpose of the invention is to improve the performance of the device by reducing the time of the discrete movement by eliminating the resistance of the track throttle at the beginning of the discrete movement.

FIG. 1 shows the proposed control device, a general view of FIG. 2 - hydraulic circuit with a throttle, which is controlled by the proposed device; in fig. 3 - controlled mechanism - rev-grandmother. The control unit comprises a plunger 2 located in the housing 1 with a spring 3 and a rod 4 with a roller 5, the rod 4 being pivotally connected to the pusher, the axle and spring-loaded onto the plunger. 2 by a spring 6. Barrel 4 is provided with an abutment 7 for restricting its rotation, interacting with the plunger ohm.

The proposed device is illustrated by the example of a turret headstock control (Fig. 3), on the housing 1 of which a plunger 2 is mounted. The headstock contains a main motion drive 8 with a gearbox 9 providing rotation of the spindle 13 through gears 10-12 and a hydraulic motor 14 rotating the faceplate 15 through a kinematic Chain: gears 16 and 17 and quill 18, spanning spindle 13 and mounted on bearings 19 in housing 1. On the faceplate 15, a rotating spindle box 20 is mounted. The angular position of the faceplate 15 is fixed by a spring-loaded latch 21 and pressed against the body by the driving rod 22 through the flange 23. Controlled. The position of the faceplate is 15 sensors 24 and 25.

On the periphery of the rotary faceplate 15, control elements 27 and 28 are mounted on sectors 26, which are made as composite parts with the possibility of relative displacement, which

through the rod 4 and the plunger 2 interact with the throttle 29, placed on the body 1 of the turret headstock. The throttle 29 is installed at the outlet of the hydraulic motor 14

 (Fig. 2),. The working fluid is supplied to the input of the hydraulic motor from the power source 30, and at the outlet, the choke 29 communicates with the drain 31.

The controlled mechanism with the control elements 27 and 28 placed on it can be executed both with rotational and with linear movement, but in both cases the proposed device is used

for mechanisms with constant direction of discrete movement, for example, working on a cycle of turn-stop-turn.

The device works as follows:

at once.

When moving the movable element - faceplate 15 (from right to left in the drawing), the control elements 28 and 27 press the roller 5 placed on the rod 4. The latter through the axis acts on the plunger 2, overcoming the spring force 3, and the plunger 2 crushes the throttle 29.

When the roller 5 hits the section with the reverse bevel of the stop 27 under the action of the spring 3, the roller 5 overcomes the force of the spring 6, rolls down from the stop, turning the rod 4 (counter clockwise), and the plunger 2 moving under the action of the spring 3 side of the stop, frees track choke 29. Next, the cycle repeats.

Adjusting the braking mechanism at each position of the device, including in the presence of unbalanced rotating masses, is made by the mutual movement of the control elements 27 and 28 along the face of the faceplate 15 so that the speed of movement of the moved faceplate is reset to zero exactly at the moment roller 5 is in contact with bevel control element 27.

This achieves the most economical (in time) deceleration cycle at each specific position and prevents a hit on the latch when performing a forward – stop – forward cycle and reduces to a minimum the time (and path) of the reverse when performing a forward – reverse – stop – forward cycle.

0)

formula of invention

The track control device containing a track choke, a control element and installed between them in the housing with the possibility

Forward movement of the plunger, characterized in that, in order to improve performance, the device is equipped with a lever pivotally mounted on the plunger, spring-loaded relative to the housing, with the roller and the stop installed in the device, which have the ability to interact respectively with the control element and the plunger.

$ ЈЈ%

g

thirty

2128

Fi-1.2.

Editor A. Kozoriz

Compiled by A. Kornilov Tehred L. Oliynyk

Order 11

Circulation

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk na.B., 4/5

 $ J

Proofreader H .. Maximishinets

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Claims (1)

Claim A directional control device comprising a track throttle, a control element and a plunger mounted between them in the housing with the possibility of 15 translational movement, characterized in that, in order to increase productivity, the device is equipped with a lever pivotally mounted on the plunger spring-loaded relative to the housing, and the lever is mounted entered in; the device is a roller and an emphasis having the possibility of interaction with the control element and the punche25 rum, respectively. FIG. 2 Fig.Z