HU183693B - Balancing device with automatic plane chane-over switch - Google Patents

Abstract

In an unbalance compensation device for measuring the unbalance of a component (designed as a rotary part) in two measuring planes which run at a distance from one another and to which the device can be adjusted by means of a surface change-over switch for the compensation of the unbalance, the machine stoppage due to the traditional surface change-over switches becoming defective is eliminated, the manipulation is simplified and the downtimes are reduced by such a surface change-over switch being used in the device which is connected to the output of the angularity-difference indicator of the analysing unit so that it automatically switches over to the other measuring plane at the appropriate time. The surface change-over switch is preferably an electronic switch, the acceptance condition of which is a 0-signal from the angularity indicator, but the switching signal of which is a minimum angularity difference set beforehand. The switch is preferably interconnected with indicating lamps which indicate the measuring plane.

Description

BACKGROUND OF THE INVENTION The present invention relates to a balancing apparatus with an automatic plane changeover switch, wherein the apparatus comprises an angular position sensor, an instantaneous angular position information store, a summing unit and an evaluation unit.

It is known that for the dynamic balancing of rigid rotors, a balancing plane perpendicular to two axes of rotation on the rotor must be selected.

In these planes, the balancing machine, after proper adjustment, measures the magnitude and angular position of the imbalance. For most balancing machines, after weighing, the rotor to be balanced must be rotated by hand, at higher weights, with the motor, until it is set to an angle depending on the balancing machine's measuring system. In this angular position, when the desired mass is applied or removed, the rotor is balanced in one plane. It must then be switched with a changeover switch so that the parameters of the imbalance become known in this plane, so that balancing can be performed. The rotor must then be rotated in the other plane to the desired angular position.

It can be seen that the shifting switch is a very common element in balancing. Therefore, it occasionally malfunctions and needs to be replaced. Touch-sensitive electronic plane changeover switches are also known, but there is also the inconvenience of handling as unnecessary action is required. Therefore, when balancing long rotors, you should go to the dashboard.

There are also aspirations that measure and display rotor imbalance in both planes simultaneously, leaving the plane shift switch. This solution is expensive because it duplicates the electronic measuring unit.

It is therefore an object of the present invention to provide a balancing device that eliminates many machine positions resulting from the failure of conventional plane changeover switches, simplifies handling and reduces downtime.

The object of the present invention has been solved by employing a plane changeover switch which is connected to the angular difference output of the evaluating unit and thus automatically changes the plane at the appropriate time.

Preferably, the plane changeover switch is an electronic switch, the enabling condition of which is the O position indicator display and the switch signal is a preset minimum angle position difference.

The changeover switch is preferably coupled to a display lamp or lamps which indicate the plane of measurement. The equipment thus designed is extremely simple, inexpensive and reliable, with minimal risk of failure. By using it, the balancing equipment can be operated more economically and easily.

Further details of the invention will be illustrated by way of an exemplary embodiment. The drawing shows a sketch of the equipment. During rotation of the workpiece trapped in the balancing device, the angular position sensor 2 provides a signal to the information store 3 and the evaluation unit 4. Between the evaluation unit 4 and the information store 3, a summer 5 is added which adds or subtracts a given value to the current angular position.

The plane changeover switch 7 is connected to the evaluation unit 4. The indicator lamps 6 on the instrument panel are switched on to the evaluation unit 4 and the changeover switch 7.

The equilibration with the apparatus according to the invention is as follows.

The workpiece 1 is clamped and rotated with the apparatus. The angular positions of the imbalances in the balancing planes are then stored in the information store 3.

The rapid rotation is then stopped and the workpiece 1 is rotated slowly to bring it into the plane necessary for balancing. The indicator lights 6 now have a sky which is just to be balanced; icon. In addition, the position of the workpiece relative to the inserted angular position is also indicated by an indicator lamp 6, such that the indicator lamp 6 which is farther away from the center at a distant position and the indicator lamp 6 nearer to the center illuminates on the corresponding side. As the workpiece 1 approaches the stored angular position, the indicator lamps 6, which become closer to the center, light up, and the corresponding angular position is reached. In the middle, two indicator lights 6 are illuminated: one indicates that the workpiece 1 is in the correct angular position and the other indicates which plane is being balanced. At the same time, the evaluation unit 4 provides an enable condition signal to the level changeover switch 7, which is thus ready to change.

After the necessary balancing is completed, it is not necessary to operate the changeover switch 7, because when the workpiece 1 is rotated from a given angular position, the changeover switch 7 automatically changes after a certain small angle value. At the same time, the indicator light 6 for the previous plane goes out and the other light comes on. At the same time, the indicator lamp 6 corresponding to the angular position of the workpiece 1 lights up and the process described above is performed.

The changeover switch 7 performs its function in this plane as before. In any case, it switches if the rotor is turned to the right or left by the set angle after finding the correct angle position.

It can be seen that the equipment is very easy to operate. You only need to rotate the rotor and the plane changeover switch will move to the other plane if the angular position is already found in one plane. Rotation of the rotor is an inherent part of balancing, and this operation is utilized by the invention for plane shifting, thus eliminating the need for a separate plane shifting operation.

Claims (3)

Patent claims A balancing device with an automatic plane changeover switch, wherein the device comprises an angle position sensor, an instantaneous position information store, a summing unit and an evaluation unit, characterized in that the plane change switch (7) is connected to the output signal indicator output of the evaluator (4). An embodiment of the device according to claim 1, characterized in that the plane change switch (7) is an electronic switch. Embodiment of the balancing device according to claim 1 or 2, characterized in that the plane changeover switch (7) is connected to the signal lamp (6) or the signal lamp (6).