DE2460017A1 - DEVICE FOR CONTROLLING THE REVERSAL OF THE MOVEMENT OF THE CARRIAGE ON A MACHINE TOOL - Google Patents

Description

Applicant: OAZENEUVE S.A.

377- are. President-Wilson

95210 LA PLAINE-SAIETT-DEITIS ₀₂₈ BREMe _n , 17th December 1974

Pkih SlevogUtraea 21

Federal Republic of Germany

Telephone 0421 - 34 2019 Henri Rene BRUET Telegrams: PATMEIS BREMEN

14 rue des Pyramides,
75001 PARIS, France

Our sign

1511

Control device: reversing the movement of the Cart on a machine tool

(the priority from French patent application No. 73 47018 of December 28, 1973 is used)

The invention relates to a device for controlling the Reversal of the travel motion of the carriage on a machine tool.

The invention is applicable when it comes to safely control the return of the car from one of the outer ends of the lane. Generally leaves for this purpose the car interacts with stops at the end of the track so that it is stopped and vice versa Senses running back. A simple known device of this type has stops which define the end of the lane and which are mounted on a rail that can slide with respect to the machine; this track controls itself Aids that cause the car to stop and start again. Usually such a control device

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two extremely · positions from which the carriage sioh in the moved forward in one direction or another, as well as an intermediate division in which the car stops · When the car arrives at the end of the lane, it hits the corresponding stop until the position of the control device Stop and the car stops. In order to set the car in motion again in the opposite direction, the worker pushes manually move the rail beyond the holding position to the position from which the movement in the opposite direction starts, line such manual control is not cheap; Also, it can happen that the worker accidentally pulls the car in the same Sense as originally set in motion, which is very unfavorable for the machine tool.

It would therefore be very desirable if it were possible to to be able to control the reversal by the car itself and without the risk of errors or mistakes. It would also be desirable to be able to automate the process of reversal in certain cases without having to change the machine.

_{It is an object of the present invention to} solve the above-mentioned problems by means of a simple and extremely effective device.

The invention is therefore a device for controlling the reversal of the travel movement of the carriage on a Machine tool in which the carriage has two non-positively connected to a slide rail and located at the ends of the track Stops cooperating, the slide rail slide parallel to the movement of the carriage, control the reversal and two extreme positions, which correspond to the respective forward movement of the carriage in one or the other direction, as well as an intermediate position that corresponds to the stop of the carriage, can occupy and wherein the carriage has a protruding part which cooperates with the stops at the end of the track,

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characterized in that the protruding part consists of a There is a stop that is positively connected to the car and a pivot axis or shaft running perpendicular to the direction of movement of the carriage can be pivoted, with auxiliary means to limit the pivoting movement of the stop on both sides the position perpendicular to the movement of the car are provided. .

In the case of manual control, the stop is through a Control lever extended beyond the pivot axis.

In the case of an automatic control, the pivotable stop is extended beyond the pivot axis by a shoulder, which interacts with an elastic, non-positively connected to the device stop unek this when passing through the Slide rail from the engagement position to the disengagement position squeezes.

In the course of the movement of the carriage in one direction, the interaction of the movable stop with one of the fixed with the rail connected stops a limited pivoting of the first and then a driving of the second, therefore also the slide rail, by the pivotable stop, which is limited by means of limitation is set in its pivoting. As soon as the slide rail reaches the uncoupling or holding position the clutch is disengaged and the car stops.

In the case of manual control, the trolley is restarted by operating the control lever. However, this can can only be achieved by pivoting the movable stop in the direction of the second position of the limited Pivoting takes place. In the course of this pivoting, the pivot axis remains with respect to the device feat, because of The carriage is stationary, and the movable stop pushes the fixed stop of the slide rail into the second coupling position.

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So the worker cannot accidentally canoe the slide Bring into the first clutch position.

In the pail of an automatic control, the disengagement is suppressed the slide rail practically every continuous load of the movable Stop because the spring of the elastic stop can pivot it against its other extreme position, with the pivot axis remains unchanged with respect to the device. The effect is exactly the same as that relating to above the actuation of the lever has been described, and the slide rail assumes its other coupling position.

At the other end of the carriage path, the same operations are repeated with the other fixed stop on the slide rail, the coupling positions are of course reversed.

To further explain the invention, reference is now made to the enclosed Referred to drawings in which the individual figures have the following meanings:

Figure 1 is a schematic plan view of an embodiment of a manual control device according to the present invention, in which the slide rail assumes a first coupling position and the disengagement position in dashed lines is shown;

FIG. 2 is a section along line II-II of FIG Figure 1;

Figure 3 corresponds to Figure 1, but by manual Adjustment of the control lever brought the slide rail into the second engagement position is;

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Figures 4 "through 7 represent schematic views of a

Embodiment of an automatic control device according to the invention in different consecutive positions.

In the individual figures, the reference symbols have the following meaning:

1 slide rail

2 stop

3 pivoting stop
G wagon

4 swivel axis, shaft

5 interior cutout

6 thorn, pin

7.8 pages

9 levers

10 extension piece, extension

11 fixed stop

12 spiral or helical spring

In the exemplary embodiment described, the device according to the invention is used on a machine tool which has a reversing switch (not shown) which is controlled by a slide rail 1 which is positively connected to a stop 2. A pivotable stop 3 is movably mounted on an axis 4 which is positively connected to the carriage C of the device; the axis 4 runs perpendicular to the direction of displacement of the slide rail 1. The stop 3 has an inner cutout 5 through which a mandrel or pin passes parallel to the axis 4 and also connected to the carriage G in a force-locking manner. By contacting the sides 7 and 8 of the cutout 5, the mandrel 6 defines two limit positions for the pivoting of the movable stop 3 about the axis 4. '

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When carriage C and thus axle 4 moves to the left (in the Figure 1) shift, the stop 3 comes to rest on the stop 2 and moves, whatever its starting position may have been so far "until the mandrel 6 comes to rest on the side of the cutout 5. Sound at this moment the stop 3 can not move any further and hits the stop 2 and thus also the slide 1 with which it is firmly connected until the latter arrives in the disengaged position (shown in dashed lines in Figure 1). The reverse switch is then disengaged and the car G stops.

In the case of manual control (FIGS. 1 to 3), the movable stop 3 is on the other side of the axis 4 by means of a lever 9 extended. To re-engage the changeover switch, the worker must operate this lever. He can't turn it clockwise Press (on the drawing) because the mandrel 6 is in contact with the side 7 of the cutout 5. He can do it consequently only move in a counterclockwise direction. The axle 4 remains fixed until the carriage stops, and the corresponding movement of the stop 3 in the counterclockwise direction causes the displacement of the stop 2 to the left (in the drawing) until the slide 1, which is firmly connected to it, is in the second coupling position arrives (Mgur 3). The changeover switch is then re-engaged and the carriage moves to the right until the stop 3 on the second stop 2 (not shown), which is also firmly connected to the slide 1, for Plant is coming. The same sequence of movements results, the mandrel 6 interacting with the side 8 of the cutout 5 this time.

In the case of an automatic control (FIGS. 4 to 7), the movable stop 3 is on the other side of the axis 4 through an extension piece or an approach 10 extended; the approach 10 cooperates with a fixed stop 11 under the action of a

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Spiral or Coil spring 12 is. It is believed that the carriage moves to the left (Figure 4). The disposition is such that whatever the position of stop 3 is, the approach 10 comes to the approach 11 to the plant before the Stop 3 touches stop 2. The stop 11 begins the approach 10 and then the stop 3 in the counterclockwise direction Direction to move until the mandrel or pin 6 comes to rest on the side 8 of the cutout 5; then comes across the approach 10 the approach 11 back by having the spring 12 so compresses far enough that the stop 3 touches the stop 2 '(Figure 5). The tension of the spring 12 is chosen so that the Stop 2 moves stop 3 clockwise, with spring 12 still tensioned until mandrel 6 is on side 7 of the window 5 comes to the plant. From this moment on, the stop 3, which is locked in the pivoting movement, hits the Stop 2 to the left; the spring 12 remains compressed until the slide 1 reaches the disengaged position (FIG. 6). At this moment the changeover switch is disengaged and the force of the changeover switch no longer acts on the slide rail 1; the spring 12 relaxes, whereby the extension 10 and furthermore the stop 3 in the counterclockwise direction Move direction, which allows the stop 2 to slide to the left until the slide 1 assumes the second coupling position (Figure 1).

It should be noted that the disengaging force, the is significant, is applied by the positive interaction of the stops 2 and 3, while the required for the coupling Force that is considerably smaller from the. Relaxation of the spring 12 is obtained.

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Claims (4)

Claims 1) Device for controlling the reversal of the travel movement of the carriage on a machine tool, in which the carriage cooperates with two stops which are frictionally connected to a slide rail and located at the ends of the track, the slide rail sliding parallel to the movement of the carriage, controlling the reversal and two extreme positions, which correspond to the respective forward movement of the carriage in one or the other direction, and an intermediate position corresponding to the stop of the carriage, can occupy and wherein the carriage has a protruding part which cooperates with the stops at the end of the track characterized eichnet overall ^ _e injiz that the projecting part consists of a stop (3) which is connected to a force 'positively to the carriage (C) and perpendicular to the direction of movement of the carriage pivot axis or shaft (4) is pivotally is, with aids to limit the pivoting movement of the stop (3). on both sides of the position perpendicular to the travel movement of the carriage (G) are provided. 509828/0199 - 9 - December 17, 1974 2) Device according to claim. 1, characterized in that the stop (3) beyond the pivot axis (4) by a Control lever (9) is extended. 3) door direction according to claim 1-2, characterized in that that the pivotable stop (3) beyond the pivot axis (4) is extended by a projection (10) with a elastic, non-positively connected stop £ 11) interacts with the device and this when the passage of the Compresses the slide rail (1) from the engagement position to the disengagement position 4) Device according to claim 1-3, characterized in that that the means for limiting the pivoting movement of the stop (3) consist of a mandrel or pin (6) which is positively connected to the carriage (C) and ait a cutout (5) in the pivotable stop (3) cooperates. For the applicant: Meissner * Bolte patent attorneys Applicant: GAZENEUVE S.A., 377 av. President-Wilson 93210 LA PLAIHE-SAIHT-DENIS, France Henri Rene BRUET, 14 rue des Pyramides ,. 75001 PARIS, France 509828/0199 -if ©; Blank page