SU977955A1 - Device for checking object surface profile - Google Patents

Description

(B) DEVICE TO CONTROL PROFILE OF THE SURFACE OF THE OBJECT

one

The invention relates to a measurement technique and can be used to measure the profile of the incisors used in the coal industry and the degree of wear of the incisors of mining tools.

A device for measuring the wear profile of the incisors is known, comprising a microscopic coordinate table, a mandrel for fastening the tool, a linear tool feed system, an illuminator, and a tool for controlling the tool movement. The disadvantage of the device is that the measurement operations are manual and laborious in connection with many measuring points. To improve the accuracy of the measurement, it is necessary to increase the number of readings of the contact points of the measuring needle. In addition, the deformation of the latter leads to an increase in measurement errors, and in the case of a Complex cutter profile, measurements cannot be taken at all.

Closest to the proposed technical essence and the achieved result is a device for monitoring the surface profile of an object containing a rotation system

5 controlled object, system of longitudinal movement of the controlled object, sensors of rotation and longitudinal movement, illuminator, optical signal converter, block

About processing the information signal associated with it, and a block of number of cycles control connected to the first input of the processing information block

 signal. Optical converter

5, the signal is made in the form of a photodetector, and the systems of rotation and movement of the object being monitored are installed in such a way that they serve to scan the surfaces of flat objects 21.

20

Claims (2)

The disadvantage of this device is the inability to control the surfaces of rotation bodies. 397 The purpose of the invention is to provide control of the surface profile of the bodies of revolution. This goal is achieved by having a device for monitoring an object's surface profile containing a system of rotation of a monitored object, a system of longitudinal movement of a monitored object, sensors of rotation and longitudinal movement, a illuminator, an optical signal converter, an information signal processing unit associated with it, and a control unit the number of cycles connected to the first input of the information signal processing unit is equipped with a block for specifying the start time of the sweep, the input of which is connected to the systems th rotation of the controlled object, and an output - to a second input information signal processing unit, the optical signal transmitter is designed as a progressive scanning optoelectronic system, and rotation and longitudinal movement of the system are arranged to provide a helical scan the surface of the measured object. The drawing is schematically presented. the proposed device. I The device consists of a system of longitudinal movement of the object under control, which includes a drive 1, a gear 2 with a toothed rack 3 made on a hollow rod k, a sensor 5 for a longitudinal movement consisting of an opaque perforated disk 6, an illuminator 7 and a photosensor 8, the rotational system of the object to be monitored, which includes a shaft 9 mounted inside a hollow rod, on the end of which a cartridge 10 is mounted for mounting the object to be monitored 11, the shaft 9 is connected with gears 12, stops 13, gears 14 and the actuator 15 of the rotation sensor 16, which includes an opaque perforated disk 17, an illuminator 18 and a photosensor 19, an illuminator 20, a linear lens 21, a screen 22 installed in front of the optical converter 23 signal, the information signal processing unit 2, which includes a load resistor 25 and a sweep generator 26 connected to the corresponding inputs of the optical signal generator 23, as well as connected serial amplifier 27, filling circuit 28, score Chuck 29, register 30t converter 31. code, recorder control circuit 32, cycle control block 3 and block 35 of setting the sweep start time, the outputs of which are connected to the inputs of the information signal processing unit 2, and the inputs respectively with the longitudinal movement sensor 5 and the rotation sensor 16. The device works as follows. The object 11 is secured in the cartridge 10 and the shaft 9 is rotated. The lighter 20 of the object 11 is illuminated and with the help of a lens 21 an image of the elementary section of the object 11 is projected onto the screen 28 and the target, the optical signal converter 23 as an optoelectronic scanning system having only horizontal scanning coincides with the center line of the elementary section. The photographic signal is removed from resistor 25 and amplified by amplifier 27, from which it is fed to the input of the filling circuit 28, from which output to the input of counter 29 receives a burst of pulses. The number of pulses in a packet is determined by the middle coordinate of the darkened part of the elementary section of section 11. The code corresponding to this coordinate is transferred to the register 30, from where it is fed to the recorder 33 through the code converter 31. The coordinate code of the beginning of the darkened part of the elementary section of the object 11 is also output to the register 33. The frequency the converter 23 sweeps up the control of the block 3, which receives signals from the photosensor 8, with each pulse of the photosensor 8 having a strictly defined number of cycles nimbly. The sweep triggering point (phase) is controlled by the sweep start commencement unit 35. The sweep begins at the moment when a pulse arrives from the photo sensor 19. After activating the drive 1, the rod C starts to fall, being carried away by the restrictive stop 13, the rotating shaft 9, which freely passes through gear 12, causing it to rotate. An instantaneous section of the projection of the coordinates of which is provided by the recorder 33 is projected onto the screen 22 at each Homent of rotation of the object 11. Thus, by using an installation of the object surface scanning systems and synchronizing its movement and reading the information signal, the body surface profile can be monitored rotation An apparatus for monitoring an object surface profile comprising a system for rotating a controlled object, a system for longitudinal movement of a controlled object, rotation and longitudinal movement datmics, a illuminator, an optical signal converter, an information signal processing unit associated with it, and a cycle number control unit connected to the first input of the information signal processing unit, characterized in that, in order to control the surface profile of the bodies of revolution, it is provided the unit for setting the start time of the sweep, whose input is connected to the rotation system of the object being monitored, and the output to the second input of the information signal processing unit, the optical signal converter is designed as an optoelectronic sweep system, and the rotation and longitudinal movement systems are installed to provide a helical sweep of the surface being measured object. Sources of information taken into account in the examination 1. Krapivin M, G. Mountain tools. M., Nedra, 1979, p. 159. 2. Authors certificate of the USSR, cl. G 01 B 11/30, 1977 (prototype).