CS231725B1 - Device for control of testing machine - Google Patents

Description

(54) Test machine control equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention

The object of the invention is to solve the automatic stopping of the test machine in the case of a drive clutch failure and in the case of a significant vibration of the bed due to the occurrence of a mechanical failure on the tested bearing.

This object is achieved by attaching a vibration sensor provided with an adjustable comparator and an output cut-off member controlling the drive electric motor via the switchboard to the bed or to the bearing housing of the test bearings.

The invention can be used in the bearing industry and other fields of testing.

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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for operating a test machine, in particular a rolling bearing testing machine, in particular for automatically stopping the test machine when a drive clutch fails to transmit rotational movement from a motor driven spindle drive shaft · Automatic stopping of the testing machine in case of significant bed vibrations due to the occurrence of mechanical failure on the tested bearing.

Most test machines to verify the operating parameters of rolling bearings, eg to verify their durability, are arranged such that torque is transmitted to the rotary shaft with the test bearings clamped from the headstock drive shaft via a coupling. The headstock shaft is mounted in the headstock body in the bearing bearings and connected by a gear mechanism, for example a belt drive, a gearwheel, a variator, and the like, to a drive motor.

The described solution of the transmission of the twisting monet is to prevent the load of the rotating shaft and thus the tested bearings by additional radial force from the gear mechanism, and secondly it constitutes a protection element in that the clutch is rigidly designed so that in the event of excessive resistance caused by other parts of the test machine were not damaged. The drive motor is connected with an electrical total clock, which records the running time of the motor.

The reading of these hours is read as the observed durability of the tested bearing. Automatic shut-off of existing test machines is not solved. Thus, the drive motor continues to rotate to a standstill by the operator, which also stops the registration electric summation clock connected to the drive motor, the time interval between clutch destruction or eechanical failure of the bearing and shutdown of the drive motor by the operator is an error. . .

This drawback is largely eliminated by the test machine control device of the present invention, characterized in that a vibration sensor provided with an alignment adjuster is mounted on the bed or housing of the test bearings to indicate a reduction and / or increase in vibration and an output a shut-off member controlling the drive electric motor through the switchboard.

The device according to the invention increases the priority of the operating parameters of the bearings obtained on ^the ear machine. Ummžňňje nepřetrživ cho zkušetaíto ^{d T b} swarms ez presence of the operator, which is saving machine time test machine and saving labor and increases prodsUktvitt tests.

The device is further explained by means of an exemplary embodiment of the device according to the invention, which is schematically shown in the accompanying drawing.

The test bearings 6 are mounted in the test machine by outer rings in the bearing bodies 6 in the bed 6 and clamped by the inner rings on the rotary shaft 21. The rotary shaft 12 is connected by a clutch 8 to a drive shaft 2, which is mounted in bearing bearings 10 in the headstock 11. The drive shaft 2 is connected to the electric motor 13 by means of the gear mechanism 12, to which the electric summation clock 14 is connected.

A load force P from a non-illustrated load system is applied to the receiving body 5 via the bed 16. A vibration sensor is mounted on the bed, which is connected to the adjusting member of the comparator 2 and the output trip member. The output tripping member 6 is connected to the distributor 15 of the electric motor 63, the distributor 15 being connected to a non-drawn power source. In another embodiment, the vibration sensor may be mounted on the receiving body.

23Π25

If a result of the enlarged bearing sixth resistance test, for example their accidents defining clearances and the like, to the destruction of the clutch 8, and result of a stoppage of the rotary bearings tested hřídel- ia £ significant reduction of the jitter value sensed vibration sensor ¹ and when ^p oklesu ^{h d} the music vibration level after ^d re ^d em set on an adjustable comparator provides an output member £ breaking member. detaching the electric motor 13 and the electric totalizing clock 14 from an untreated power source.

Also, in the event of a mechanical failure on the test bearing, as it rotates, an increase in the vibration value above the level preset at the comparator 2 ensures that the output shut-off member also disengages the electric motor. 13 and an electrical summation clock 14 from a power source not shown.

Claims (1)

OBJECT OF 'VINÍIIZ' Apparatus for operating a test machine, in particular a rolling bearing testing machine, in which the test bearings are mounted by outer rings in the bearing housing and the bearing and inner rings are clamped on a rotating shaft connected by a coupling to the headstock drive shaft supported in the headstock housing by supporting bearings and connected gear with a drive motor, characterized in that a vibration sensor J. provided with an adjustable comparator (2) for indicating a reduction and / or an increase in vibration and an output tripping member (3) is mounted on the bed (5) or the bearing housing (4). connected via a distributor (15) to a drive electric motor (13).