CS245885B1 - Dimension control head, especially for automatic installation - Google Patents

Abstract

The essence of the control head is that the upper end of the lift is connected to the arm of the two-arm lever, the second arm of which is provided with the diaphragms. Between the orifices there is a slot corresponding to the optoelectronic sensor.

Description

1 245885

BACKGROUND OF THE INVENTION The present invention relates to a control dimension for mounting on automatic assembly devices.

When assembling engineering and electrical products, it is very common to check the correctness of other technological operations based on dimensional measurements - the height of the parts or the group in the assembly tool, the tolerance field being often less than 0, 1 mm. Up to now, heads equipped with two-adjustable inductive proximity switches are used for these operations, switched by a metal flag connected by toothed transmission mechanisms or directly measured object, or by using complex measuring devices designed for technical inspection equipped with complex evaluation devices.

The disadvantage of these control heads is the relatively high moment of inertia of the moving masses in each measuring cycle, or rather the large resistances due to the friction of the mechanisms, which causes the repetition of the position of the sensor member at the point of time for the high working frequency of the assembly machines. -force caused by its unsteadiness in the polofoe and the mechanism call, the worse the accuracy due to the hysteresis of contactless sensors, and the other disadvantage is the need to adjust both sensors.

The disadvantage of measuring devices intended for control is their high cost because they are equipped with evaluation circuits, which in many cases are very difficult to adapt to the control system of the assembly device, which will require additional costs and their unsatisfactory high frequency measurement and non-security damage, in the case of very dreamy-looking dry parts.

The above-mentioned drawbacks are alleviated by the solution of the dimensional control head of the invention according to the invention, the principle of which is that the upper end of the elevator is pivotally attached to one arm of the double-arm roller mounted in the housing. The longer arm of the two-arm lever is provided with an adjustable 1 " right "

The end cap and aperture and slot correspond to the optoelectronic sensor.

The control head of the dimensions of the particularly automatic assembly results in a low weight of the moving parts, which, in addition to the lenses and the right curtain, perform very small strokes and have very small frictional resistances due to their storage. The control level achieves a high repeatability of the position and a rapid stabilization of the mechanism at the time of measurement at a high measuring frequency (which reaches up to 120 cycles per minute), with no hysteresis being detected.

In the accompanying drawings, an exemplary embodiment of a control head is shown, in which Figure 1 is a partial cross-sectional view, Figure 2 is a sectional view taken along line A-A of Figure 1 and Figure 3 is a B-B of Figure 2.

The control head of the dimensions, in particular the automatic assembly, consists of a base body 1, to which a housing 2 is screwed. In the lower part of the housing 2 there are threaded bodies 3 in which the conical pins 5 are supported by balls 4. The arm 7 of the two-arm lever 6 is adjustable by means of a flip-flopping aperture 8 and a right-hand shutter 9. Between the flaps 8 and the right-hand shutter 9 a formation 25 is formed.

The upper ends of the lava and the right aperture 8, 9 and the aperture 25 correspond to the optoelectronic sensor 22 which is firmly screwed on the upper face of the housing 2. One lowering spring 19 is suspended on the lower screw 21, the other end of which is mounted on the holder 20 placed on the stems 2.

On the arm 10 of the double-arm lever 6, a jack 12, which is freely mounted in the bases of the body 1, is pivoted by means of a cylindrical pin 11. The jack 12 is provided with a transport nut 14 in the upper end. The metering contact 15 is supported by the bearing nut 14 in the base body 1. A washer 17 is supported in the base body 1, on which the stopper screw 18 is screwed into the base body 1. At the end of the measuring end 15 a sensing element 16 is adjustable. 1 clamped on arm 23 of the lifting mechanism.

The check head function follows: The check head is approached above the measured object 24 by the arm 23, the sensing nut 16 strikes the object 24 to move the jack 12 by the same contact 15 and compression spring 13.

The jack 12, by means of a cylindrical pin 11, rotates the double-arm lever 6 with the left and right shutters 8, 9 in the clockwise direction. If the object to be measured 24 is in the desired position, which is a part of the slot 25, the right-hand shutter 9 protrudes the active part of the optoelectronic transducer 22 and then opacity the optoelectronic transducer 22. The transmitted signal is evaluated by the control unit and the correct dimension. If the object to be measured is low or missing, the optoelectronic sensor 22 remains obscured by the right aperture 9, or is not obscured. If the object 24 is high, the optoelectronic transducer will be progressively closed by the aperture 9, the aperture 25 and the aperture 8 and the aperture 8 or

Claims (2)

SUBJECT The dimensional inspection head, in particular for automatic assembly, consists of a base body and a housing in which a sensing mechanism consisting of a measuring contact mounted slidingly suspended in a jack is located, characterized in that the upper end of the jack (12) is pivotally connected to one arm (10) The roller (6) is mounted in a housing (2), the longer arm (7) of which is provided with an adjustable lava and a right orifice (8, 9) between which a slot (25) is formed until the ends of the left and right orifice (8, 9) and slot (25) correspond to the optoelectronic sensor (22).