SU1413423A1 - Device for measuring dimensions of hollow hexahedral boring steel - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to expand the functionality of the device by further measuring the diameter of the inner channel of the hollow hexagonal drill steel by comparing the cross-sectional areas of the rolled products with and without the channel. The rotary mechanism 1 rotates the hexagonal profile around its longitudinal axis. The sensor 2 of the rotation angle J every 2–4 ° produces a pulse, by which the signal value from the 3 dimensions gauge enters the processing unit 4, in which the diameter tsch, the inscribed circle, diameter 0 is determined; circumscribed circle and radius of curvature of cross-section of rolled products. These data arrive at indicators 5-7 and block 8, where the area Fpp of the cross-section of the car without a channel is determined. The value is transmitted to subtractor 13. The sensor 9 measures the length of the roll and transmits this information and the control signal to the dividing unit 10. The sensor 12 measures the volume of the workpiece V, the value of which is transmitted through the information transmission unit 11 to the division unit 10. In block 10, the cross-sectional area of rolled products with channel F is determined. In block 13, the channel cross-section area F is calculated. F F F G R k. In block 14, determining the diameter of the channel together with block 15, the data is calculated. , the value of which goes to the indicator 16. 6 Il. , with "e (L with N9 od faf

Description

The invention relates to a measuring technique and can be used, for example, in the metallurgical industry in controlling the operation of rolling mills. The purpose of the invention is to expand the functionality of the device by further measuring the diameter of the internal channel of a hollow hexagonal drill steel by comparing the cross-sectional area of rolled steel with and without him

FIG. 1 pr geedena block diagram of the device; in fig. 2 - division unit; in fig. 3 - information transfer unit; in fig. 4 - unit for determining the diameter of the channel; in fig. 5 is a diagram for calculating the cross-sectional area of a hexagonal profile; in fig. 6 - the sequence of operation of the blocks.

A device for measuring the dimensions of a hollow hexagonal drill steel contains (Fig. 1) a turning mechanism 1, a rotation angle sensor 2, a 3 meter size, a processing unit 4, minimum and 6 maximum dimensions indicators and 7 rounding radii, an area calculating unit 8, a sensor 9 rental lengths, division unit 10, information transmission unit 11, workpiece volume sensor 12, subtraction unit 13, channel diameter detection unit 14, data entry unit 15, indicator 16 of the minimum and maximum internal channel diameters.

Block 10 division (Fig. 2) contains the registers 17 and 18, triggers 19 and 20, the scheme And 2.1, blocks of keys 22 and 23, the arithmetic unit 24.

Information transfer unit 11 (Fig. Includes rental sensors 25 connected to shift registers 26. Rolled sensors control a set of shift registers which are designed to transmit workpiece volume values when moving along the mill line and output information when approaching a length measurement sensor rolled.

The channel diameter measuring unit 14 (Fig. 4) comprises a dividing unit 27, a functional function unit 28 for square-root extraction | blocks 29 and 30 multiply.

A rotary mechanism 1 is associated with a rotation angle sensor 2.

0

five

0

five

0

0

five

The rotation angle sensor 2 and the 3 size meter are connected to the processing unit 4, the outputs of which are connected respectively to the minimum 5 indicators, 6 maximum sizes and 7 rounding radii and the area calculation unit 8. The sensor 9 for the length of the rental is connected to the second input of the dividing unit 10, the first input of which is connected via the information transmitting unit 11 to the workpiece volume sensor 12. The output of the division unit 10 is connected to the first input of the subtracting unit 13, the second input of which is connected to the output of the area calculating unit 8. The output of block 13 is connected to the first input of block 14 for determining the diameter of a channel, the second input of which is connected to block 15 for entering data, and the output of block 14 for determining the diameter of a channel is connected to indicator 16 of the minimum and maximum diameters of the channel.

The inputs of registers 17 and 18 block. 10 divisions are connected respectively to the information inputs of block 11 and block 9 of the length sensor for rolled products, the control outputs of which are connected respectively to triggers 19 and 20. The outputs of flip-flops 19 and 20 are connected to the first and second inputs of the circuit 21, whose output J is connected to the first inputs key blocks 22 and 23. The second inputs of key blocks 22 and 23 are connected respectively to the outputs of registers 17 and 18, which transmit information through key blocks 22 and 23 to the inputs of block 24, the output of which is connected to subtractor 13.

The output of the subtraction unit 13 is connected to the first input of the dividing unit 27, the output of the unit 27 is connected to the input of the square root function block 28, the output of which is connected to the first 5 inputs: multiplication blocks 29 and 30, the second inputs of the dividing blocks 27, 29 and 30 the multiplications are connected to the data entry unit 15, and the outputs of the multiplication blocks 29 and 30 are connected with the indicator 16 of the minimum and maximum diameters of the internal channel.

The device works as follows.

The rotary mechanism 1 rotates the hexagonal hot rolled profile around its longitudinal axis. The sensor 2 of the angle of rotation every 2-4 produces a pulse, by which the value of the signal from measure 5

0

The body of 3 dimensions enters the processing unit 4, in which the diameter of the inscribed circle is determined, the bottom meter of the circumscribed circle, taking into account the rounded, radius and curvature, and is transmitted to the indicators 5, 6, 7 and in block 8, the area in which the transverse area is determined section.

The cross-sectional area of the hexagonal profile is determined by the ratio (Fig. 5)

So, - K S - to S

(one)

. (

I5M. Ш 41

where Bsch is the area of a regular hexagon calculated by the measured value

Mr me;

the number of angles of the hexagonal profile formed in the roll gaps, and the area of the blunting of this angle, respectively;

the number of angles of the hexagonal profile, formed by the caliber, and the angle of dulling the angle. For a six-level stand K 6, to 0; for three-roll - K K 3; for double roller - K 2, K 4 ..

The area of a regular hexagon S; determined by formula V3

TO

S Su, -f DJ, "

(2)

The area of blunting is defined as twice the difference between the area of the ABO and the sector

S 2 (S-Scjn)

r2

   Max

 (

Finally, the cross-sectional area of the hexagonal profile obtained by rolling in six-heaved cages is V3

I8M. IU6 2 WWH L-S,

In three rolls

(four)

1m sh5 7 min - 3S - 3S, (5)

in twin roll cages x f: d2

 tl ll til lf l

MSM lUJ

I

 Mmm

-25-4S, (6)

II

where S and S are determined by expression (3), and for S, the value of the radius g of the round hex of the hexagonal profile is substituted into the expression (3).

but

,

,

determined in processing block 4, and for S, the value of radius r of rounding -5 Pa is substituted into expression (3).

Calculation by formulas (3-6) can be carried out by standard computing means, for example, of the type KTS LIUS-2.

IQ The value of Fy is transmitted from the area calculation unit 8 to the subtraction unit 13, where the area F | channel cross-sectional ratio

15 Fy3M.u /)

where FUJ is the actual area of the hexagonal profile (without the area of the internal channel). The value of F is found in the following 2Q manner.

The length sensor 9, after measuring the length Lc of the roll of hexagonal drill steel, transmits an information signal proportional to the length, and a 25 control signal to the dividing unit 10.

The volume Vj of the round billet is measured by a volume sensor 12, as which, for example, a device for determining the volume can be used.

30 round billet.

Since there can be two more rolls between the piercing and calibration mills (and in the general case, n rolls), the data from sensor 12

The 35 volumes are transmitted to the information transmission unit 11 (Fig. 3), which consists of a set of n shift registers 26 controlled by sensors 25 for rolling stock along the mill line. After rolling each bar each of the information obtained by measuring the volume of the original billet by the volume sensor 12, from the last register 26 of the information transmission unit 11 with the control signal

45 enters block 10 division.

Block 10 division works as follows.

When recording information about the volume of the workpiece in the register 17 at the same time

5Q to the input of the trigger 19, a control signal 1 is received, which is transmitted to the first input circuit AND 21. After measuring the length of the roll from the length sensor 9, an in55 signal is received to the register 18 (formation length), the control signal is fed to the trigger 20 input. signal 1, which is transmitted to the second input of the AND circuit 21.

When two control signals 1 arrive at the input of the AND 21 circuit, the output of the AND 21 circuit generates a signal 1, which nullifies resetting of the flip-flops 19 and 20, and the blocks of keys 22 and 23 pass information signals from the registers 17 and 18 to the arithmetic unit 24, where the area Hz is determined, p) of the hollow hexagonal drill steel by the ratio

F w l

sh

(eight)

The value of Hz is transmitted from block 10 to subtractor 13, where the area F | channel cross section by relation (7). The value of F is transmitted to the channel diameter determination unit 14.

The channel diameter determination unit 14 operates as follows.

The inner channel of hollow hexagonal drill steel gets limited

ku when forming a hexahedron of a round profile. Under actual production conditions, the dimensions of the internal channel vary due to fluctuations in the temperature of the rolled stock, wear of the rolls, etc. At the same time, the channel shape (cut-off, ovality) remains unchanged, only its dimensions change in proportion to the square root of the change in the channel area F relative to its nominal value k. Before starting the device from the data input unit 15 to the division unit 27, multiplication blocks 29 and 30, the values of the nominal area of the channel F are received, the nominal value of the maximum channel diameter df, and the nominal value of the minimum channel diameter d min. yom

In block 27 of division, the area ratio is determined.

to

t

 nominee

in function block 28, the value of K is determined, which is equal to m, in blocks 29 and 30 of multiplication, the value

max k-d

K2

(9)

min

 K-d

to max, k. vuH. MOM

(ten)

The values of mmn are transmitted to the indicator 16 of the maximum and minimum channel diameters.

At time t, a measurement of the volume V, of the workpiece by the block 12 begins, which ends at time t.

At the time t, the output of the information transmission unit 1 1 appears in a signal. Which is stored until time a

t,. Measurement for 1 L is started at time t4 by sensor 9 and ends at time tf. After completing the measurement of the length from the sensor 9 of the length to the input of the dividing unit 10 at the moment t

control signal is received. The dividing unit 10 operates for a period of time tj ... t, after which information at the output of the dividing unit is stored until tj (. After measuring the length, the rolling enters the rotary mechanism 1 and the meter 3 dimensions. In processing unit 4, the determination is made

D values

mcht D m «ks, g in the interval

tJ ... tJ.

of time

Upon completion of the measurement, the indicated values are transmitted to the area calculation unit 8, which finishes the test.

definition

at time t

ten

At the moment, the value Fy ,,, is transmitted to the subtraction unit 13, on the other input of which the signal F exists. The operation of the subtraction unit 13 ends in

at time t

P

The signal about the area of the channel F is transmitted to block 14 of the determined

t know the channel diameter. At the time of the minimum and maximum channel diameters from block 14 are transmitted to the indicator 16 and stored until the next roll in the area of the meter 3 sizes.

0

five

0

five

Claims (1)

Invention Formula A device for measuring the dimensions of a hollow hexagonal drill steel, comprising a rotary mechanism, an angle of rotation sensor associated with it, a size meter, a processing unit connected to the angle sensor and a size meter, the minimum and maximum dimensions and rounding radius connected to processing unit, which is related to the fact that, in order to expand its functionality, it is additionally equipped with a dividing unit, a data input unit, an indicator of the minimum and maximum diameters a channel, an area calculation unit connected to a processing unit, a workpiece volume sensor connected in series, an information transfer unit connected to the first input of the division unit, a rental length sensor, connected to the second input of the division unit, a subtraction unit whose inputs are connected to the division unit and by an area calculation unit, a channel diameter determination block connected to the outputs of the subtraction unit and the data input unit, the output of the channel diameter detection unit is connected to the minimum and maximum indicator about the diameters of the inner channel. Um I:, I f (corner 3 J FIG. 2 one FIG. ff 5 - t. . tj tff P YU J l ts tf J tt t h / /five FIG. 6 trztn tfj ty Vrep. With