SU376651A1 - DEVICE FOR CONTROL OF DIMENSIONS OF INTERRUPTED SURFACE DETAILS - Google Patents

Description

one

The invention relates to instrumentation engineering and can be used to control the dimensions of parts with intermittent surfaces, for example, during processing.

The known device for controlling the sizes of parts with discontinuous surfaces contains a series-connected inductive sensor, a smoothing filter, a measuring circuit and an indicator, as well as a circuit for excluding the output signal from the duty ratio of the output pulses of the sensor.

However, the known device has a complex circuit and is not reliable enough due to the presence of contacts.

In the proposed device, in order to eliminate these disadvantages, the scheme for excluding the output signal from the duty ratio of the output pulses of the sensor is designed as a series-connected amplitude limiter and an additional smoothing filter; a smoothing filter, and the amplitude limiter input is connected to the sensor output.

The drawing shows a block; -scheme of the proposed device.

The device contains an inductive sensor 1, the output of which is connected to a smoothing filter 2 of the measuring circuit n scheme 3 excluding the dependence of the output signal on the duty cycle of the output pulses of the sensor, consisting of a limiter 4 pulse amplitudes and an additional smoothing filter 5; a two-input separating unit 6, one input of which is connected to the measuring unit fnlthrom 2, and the second to the additional filter 5; indicator 7 connected to the output of the dividing unit.

The device works as follows.

The amplitude pulses U and the duty ratio y from the output of the inductive sensor I are simultaneously applied to the smoothing filter 2 and to the pulse amplitude limiter Id amplitude limiter; the pulses emit pulses of the same duty cycle —y, but inductive sensor 1 but constant dependent on controlled size. These pulses are applied to filter 5.

From the output of the smoothing filter 2 of the measuring circuit voltage is supplied

and ,, to, -and (,

where Ki is the proportionality coefficient.

The output of the additional smoothing filter 5 receives voltage

Wed .

where KZ is the proportionality coefficient.

The outputs of filters 2 and 5 are connected to a dividing unit 6, which outputs a voltage

// Cpi, rKlLf t

and - Hell - - Ld ---- - / Ct /,

t / cp2А2 t / 0 7

where / Sd - the coefficient of proportionality of the dividing block, and

D-ijK-L

Kzuo

A voltage proportional to the amplitude of the output pulses of an inductive sensor, i.e., a controlled size, and independent of the duty ratio of these pulses, is supplied from the output of the dividing block to the indicator, which allows controlling the details with different types of discontinuities of the surface to be processed by one indicator.

Subject invention

A device for monitoring the dimensions of parts with discontinuous surfaces, comprising a series-connected inductive sensor, a smoothing filter, a measuring circuit and an indicator, as well as a circuit for excluding the output signal from the duty ratio of the output pulses of the sensor, characterized in that The scheme of excluding the dependence of the output signal on the duty ratio of the output pulses of the sensor is made in the form of series-connected

an amplitude limiter and an additional smoothing filter, the measuring circuit is made in the form of a dividing unit, the outputs of the first smoothing filter and the additional smoothing filter are connected to each of the inputs, and the amplitude limiter input is connected to the sensor output.