SU1298521A1 - Device for measuring diameters of articles - Google Patents

Abstract

The invention relates to a measuring technique and can be used in measuring the diameters of shafts and holes during their processing on metal-cutting systems. The aim of the invention is to expand the functionality of the device by allowing it to be used in measuring deep holes of small diameter without reducing the accuracy of measurements. In the cycle of measurements, upon the arrival of a pulse from the sensor 6 of the number of revolutions of the product, the triggers 11 and 12 change their state, permitting the counting of pulses by the counter 5, 7, 8 pulses. The information inputs of the second 7 and third 8 pulse counters receive g clock pulses from the generator 9 clock pulses. In the first counter of 5 / L pulses, pulses coming from the sensor of the 13th number will be recorded (“from 00 ate to FIG. 3

Description

revolutions of the measuring roller. Upon completion of the full rotation of the part, the number of full revolutions of the measuring roller during the full revolution will be recorded in the counter of 5 pulses. products. In counters 7 and 8 pulses, the number of pulses will be recorded, which is proportional to the distance traveled by the measuring roller from the start of rotation of the product to the pulse by the 13th speed sensor, measuring roller and

The invention relates to a measuring technique and can be used in mechanical engineering when measuring the diameters of shafts and holes in the process of their processing on machine tools.

The aim of the invention is to expand the functionality of the device by allowing it to be used for measuring deep holes with a small diameter; tra without reducing the accuracy of measurements.

Fig, 1 shows the mounting of the measuring roller; figure 2 - section aa in figure 1; FIG. 3 is a block diagram of the device.

The device contains (Fig.1 and 2) measuring roller 1 with speed sensor (not shown).

The measuring roller is in contact with the measuring product 2 in the measurement process and is fixed by means of the plate 3 on the holder 4. In addition, the device contains (fig. 3) the first pulse counter 5, the sensor 6 for the number of revolutions of the product, the second 7 and the third 8 pulse counters, 9 clock pulse generator connected to the information inputs of the second 7 and the third 8 pulse counters, buffer register 10 connected to you-. In the course of the third counter 8 pulses, the first 11 and second 12 triggers connected to the sensor 6 of the product speed, the output of the first trigger 11 is connected to the control inputs of the first 5 and third 8 pulse counters, the output of the second trigger 12 from the moment the output of the sensor 13 the number of revolutions of the last pulse until the end of the complete turnover of the product. The buffer register 10 records the number of pulses proportional to the distance traveled by the measuring roller per revolution. The diameter calculator 14 calculates the diameter of the item to be tested according to the counters 5, 7, 8 pulses and the buffer register 10. 3 sludge.

It is connected to the control input of the second counter 7 pulses. A sensor 13 for the speed of the measuring roller is connected to the information input of the first counter 5 pulses, the second input of the second trigger 12 and the control inputs of the third counter 8 pulses and the buffer register 1 O (delay lines and pulse drivers are not shown). The outputs of the counters 5, 7, 8 pulses and the buffer register 10 are connected to the transmitter 14 of the diameter.

The device works as follows.

The measuring roller 1 is fixed on the holder 4 with the plate 3 and is brought into contact with the product 2. Upon the arrival of a pulse from the rotation speed sensor 6

products change their state the first trigger 11 with a counting input and the second trigger 12, allowing those counts 5, 7 and 8 pulses to be enabled. At the information input of the counter 7 pulses, the clock pulses from the generator 9 clock pulses begin to arrive, which also arrive at the input of the counter 8 pulses. When a pulse arrives from the sensor 13 of the revolutions of the measuring roller 1, the second trigger 12 changes its state to opposite. false and disables the counting of the counter 7. The state of the counter 7 pulses will be

to be determined by the distance traveled by the measuring roller 1 from the moment of arrival of the sensor pulse number 6 — the revolutions of the product until the moment of its own impulse

N

S.

V

(one)

: j

, -t.

de S is the path traveled by the roller during the time the counter is running; J V is the linear speed of rotation of the part at a given time;

t is the period of the generator clock pulses.

L

At the same time, this pulse will change the state of counter 5 by one and overwrite the contents of counter 8 into the buffer register 10, resetting it to counter 8. When a new pulse arrives from the sensor 13, the turns of the measuring roller 1, the processes in counters 5 and 8 and buffer register 10 are repeated. Upon completion of the complete rotation of the product 2 from the sensor 6, the output of the product will receive a pulse, which, arriving at the counting input of the first trigger 11, will transfer it to. the initial state and prohibits the counting of the meter 3 and 8. The number of pulses N recorded by the counter 5 pulses corresponds to the number of full revolutions of the measuring roller during the full turn of the product. The number of pulses recorded by the counter 8 pulses is equal to

(2)

„- -2. 3rv-t. where S is the path traveled by the roller from the moment of issuing the last own pulse to the arrival of the pulse from the sensor

product revolutions, V) j - linear rotational speed of children at a given time.

In the buffer register 10-write-. the number of pulses corresponding to the time of one revolution of the measuring roller 1,

N. t -Vb-1

(3)

where do is the diameter of the roller;

Vf,., Is the speed of the part before turning the measuring roller.

The transmitter 14 diameter, made, for example, on the basis of the program

five

JO

25

the calculated microcalculator, calculates the required diameter D at a constant angular velocity of rotation of the product within one revolution (V p V) using the formula

D dJ (N.-1) -i-. (four)

4 Equation (4) is derived from barely.

blowing dependencies:

° ST

(five)

where L is the circumference of the controlled product

L S, + S + (N ,. - 1) d, 5i;

S, N

S n

13

V.

5G- d,

(6) (7) (8) (9)

five

0

five

0

five

0

Claims (1)

Invention Formula A device for measuring the diameters of products, containing a measuring roller with a rotation angle transducer, a pulse counter, a product speed sensor, characterized in that, in order to expand its functionality, it is equipped with the second and third pulse counters, a clock pulse generator connected to information the inputs of the second and third Iimpuls counters, a buffer register connected to the output of the third pulse counter, two triggers, the first of which is connected to the speed sensor and The counters are counting, the second is the first inputs, the output of the first trigger is connected to the control inputs of the first and third pulse counters, the output of the second trigger is connected to the control input of the second pulse counter, the rotation angle converter of the measuring roller is configured as a roller speed sensor and is connected to the information the input of the first pulse counter, the second input of the second trigger, and the control inputs of the third pulse counter and the buffer register. 0UZ.Z Editor S.Patrusheva Compiled by Y. Petrakovsky Tehred M. Khodanych Proof-reader I. Erdeyi Order 875/40 Circulation 678 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4