SU1346385A1 - Two-coordinate work table - Google Patents

Abstract

The invention relates to mechanical engineering, in particular, to mechanisms that provide linear stepping movements along two axes of coordinates of an object plate of special technological devices. The aim of the invention is to simplify the design and improve the reliability of the table drive by simplifying the drive control system. To do this, in a two-coordinate table, on the slide 9 and the object plate 15, bars 2 and 10 are rigidly fixed with uniformly alternating semicircular 3 and 4 rectangular slots made on them. On the output shaft of each of the drives, the movement of the slide 9 and the slide plate 15 is placed on the cranks 20 and 21, equipped with fingers 18 and 19. The main accelerated delayed movement and stop in the predetermined positions of the slide 9 and the slide plate 15 are both sintered by the interaction of Krivoschips 20 and 21 with semicircular grooves, and pins 18 and 19 with rectangular grooves of bars 2 and 10, which simplifies the drive control system. 3 il. i (L with 1 g / -A P 27 19 CO 05 iX) eo: n 27 Z9 20 22 30 3J Fi. 2

Description

The invention relates to mechanical engineering, in particular, to mechanisms that provide linear stepping movements along two axes of coordinates of a target plate of special technological devices.

The purpose of the invention is to simplify the design and increase the reliability of the table drive by simplifying the drive control system.

FIG. 1 shows a two-coordinate table; in fig. 2 shows section A-A in FIG. one; in fig. 3 - mechanisms for moving the slide and the slide plate.

The two-coordinate table contains a base 1 with a strap 2 rigidly fixed on it, 2 evenly alternating semicircular 3 and rectangular 4 grooves. On the side walls 5 and 6 of the base 1, a guide bar 7 and 8 are fixed with a mounting on them with the possibility of movement by a slide 9.

On the sled 9 rigidly fixed strap 10, which is made the same as on the strap 2, the grooves. On the side walls 1 and 12 of the slide 9, there are fixed guide rods 13 and 14 with an object plate 15 capable of being moved on them.

On the sled 9 and the subject plate

15 are fixed respectively drives

16 and 17, on the output shafts of which are placed equipped with fingers 18 and

19 cranks 20 and 21 with cylindrical parts 22 and 23, executed on them, which, when interacting with the semicircular grooves of the strips 2 and 10, respectively, form locking devices. On the slide 9 and the object plate 15, additional locking devices 24 and 25 are fixed with actuators for moving the fingers 26, designed to interact with the rectangular grooves of the strips 2 and 10. I

Brackets 27 and 28 are mounted on skids 9, on which sensors 29-31 are mounted. Sensors 32 and 33 are mounted on side walls 5 and 6 of base 1, and sensors 34 and 35 are mounted on walls P and 12 of slide 9. Plates 36 are mounted on skids 9 and 37 for interaction with the sensors 32 and 33, on the object plate 15 — plates 38 and 39 for the interaction (sensors 34 and 35.

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The sensors 29 and 30 are designed to turn off the drive 16, the sensor 31 is intended to signal the input of the finger 26 into the rectangular grooves 4 of the bar 2 after each movement of the intermediate slide 9 to the step. Similar sensors are installed on the object plate 15 (not shown).

Sensors 32-35 are designed to monitor the end of movement of the slide 9 relative to the base 1 and the slide plate 15 relative to the slide 9, respectively.

The two-coordinate table works in the following way.

When stepping movement of the slide 9 by driving the movement of the additional locking device 24, the finger 26 is pulled out of the rectangular groove 4 of the bar 2, and the drive 16 is turned on. In the process of turning the crank 20, the finger 18 Enters the square groove 4 of the bar 2 and moves the slide 9 relative to the bar 2 , With a uniform rotation of the crank 20 at an angle less than or equal to 180, the sled 9 is reported. Smooth accelerated slow motion, i.e. acceleration and deceleration occur when moving along the bar 2 at a length equal to one step of the grooves 4. Acceleration and braking of the drive 16 is effected after the finger 18 leaves the rectangular groove 4 of the bar 2, i.e. after a full stop of the slide 9. Therefore, the dynamic characteristics of the actuator 16 do not affect the acceleration by slowing down the slide 9 °. At the moment when the finger 18 leaves the rectangular groove 4, the crank part 20 of the crank 20 enters the semi-circular slot 3 of the bar 2 and performs a preliminary ( rough) fixing of the slide 9 relative to the bar 2. The sensor 31 moves into the next rectangular groove 4 and gives the command to activate an additional locking device 24. whose finger 26 enters the rectangular groove 4, thus achieving an exact rigid fixation the slide 9 relative to the bar 2. Upon further rotation, the crank 20 overlaps the sensor 30, which commands the drive 16 to turn off, after which the cycle of the step movement of the slide 9 is repeated.

The operation of the movement mechanism and the additional locking device

Claims (1)

plate 15 is similar to the work of the relevant mechanisms of the sled 9. The invention formula A two-coordinate table containing a base, a slide, a slide plate, drives, the output shafts of which are connected to the slide slide mechanism and slide plate, characterized in that, in order to simplify design and increase reliability, 346385 The table drive, the mechanisms for moving the slide and the slide plate are made in the form of slats rigidly mounted on the slide and the plate with evenly alternating semicircular and rectangular grooves and a crank with a finger placed on the output shaft of each drive, with the latter being interoperable and semicircular and rectangular grooves of the slat. / 2 35 R FI.1