SU1241069A1 - Device for checking tightening of joints of small-sized parts - Google Patents

Abstract

The invention relates to non-destructive acoustic (vibration) control methods and can be used to control the stature of miniature parts, for example, sentinel. production. The aim of the invention is to increase the reliability of control of the Account by providing control of directly fastened Parts with the help of vibration control transducers. The device comprises a generator, an oscillation receiver, a rack with a spring and a beam with a tip. The vibrations from the generator are transmitted to the fastening element by means of a beam and a tip in the direction of possible play of the joint. If the connection is poor, the fastener vibrates with the beam and signals the connection to be unsuitable. 2 Il. i (L to 4; Od: o

Description

The invention relates to non-destructive acoustic control (vibration-1) methods and can be used to control the stature of miniature parts, for example, for single-piece production. .

The aim of the invention is to improve the accuracy of the control by providing control of directly sprung parts with the help of vibration control transducers.

FIG. 1 shows a device for monitoring the compactness of small parts with a common beam for a generator and receiver; in fig. 2 - a device for controlling the structure of small parts with separate beams.

The device for monitoring the structure of small parts contains a generator 1, a receiver 2 oscillations, a rack 3 (and 4), a flat rod 5 (and 6) fixed to it and rigidly attached with the end beam 7 (and 8) attached to it perpendicular to it is fixed tip 9, (and 10). The generator 1 and receiver 2 are made in the form of vibration transducers and are fixed to the beam 7 (and 8), and the displacement vectors of the generator 1 and receiver 2 are parallel to the direction of the possible play of the controlled connection. The device shown in FIG. 1, it is convenient to control the connection of the fastener 11 with the part 12, for example, the platinum of the clock mechanism and the screw, which is in the center of the free arm. The device shown in FIG. 2, it is convenient to control the connection of the parts 12 and 13, fastened by the fastening element 11, for example, fastened together with screws of the bridge to the clock screw.

The device for controlling the state of the joint of small parts works as follows.

In the device shown in FIG. 1, the vibration from the generator 1 is transmitted to the fastening element 11 by means of the beam 7 and the tip 9 in the direction of possible play. In case of poor-quality connection (untrusted kr. The reliable element 11, made in the form of a screw) fastener 11

vibrates with beam 7, and receiver 2 signals that the connection is unsuitable, which is estimated by the amplitude of the electrical oscillations of receiver 2 at a given amplitude of the oscillator excitations of the generator 1, When the fastening element 11 with part 12 is fastened (screw is screwed all the way into detail 12) the fastening element 11 provides high mechanical resistance to oscillations of the beam 7, and the receiver 2 signals the suitability of the connection.

In the device presented on

FIG. 2, the vibration from generator 1 via beam 7 and tip 9 is transmitted to part 13 of a lower mass of the joint under control (parts 12 and 13) in the direction of POSSIBLE backlash. With

a poor connection, the part 13 vibrates under the action of the generator 1, and its vibrations are perceived by the receiver 2 through the tip 10 and the beam 8. With a good connection

at the output of receiver 2, the oscillations are small or absent.

Thus, the image allows to increase the reliability of monitoring the size of small parts directly on the basis of the bond between the parts between them and bake excitations and reception of mechanical vibrations of the controlled connection by vibrator converters.

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Claims (1)

Invention Formula A device for monitoring the state of the connection of small parts, containing mechanically connected with the details of the connection being monitored, a generator and oscillation receiver, distinguishing it with the aim of increasing the reliability it is equipped with a stand fixed on it by a flat spring and a end rigidly attached to it with a beam, on the other end of which a tip is fixed perpendicular to it, a generator and the receiver is made in the form of vibration transducers and is fixed on the beam, and the displacement vectors of vibration transducers are parallel to the direction of possible play of the controlled joint. 12 (ru. /