SU1719880A1 - Device for testing circumferential step and accumulated error of toothed gears - Google Patents

Abstract

The invention relates to a measuring technique, in particular to measuring devices for measuring parameters of gear wheels. The purpose of the invention is to improve the accuracy of measuring the circumferential pitch and the accumulated error of gears by including in the device an error compensation block introduced by the angular rotation of the Earth having three information inputs, one control input, one information output, and the execution of an electric drive in the form of a stabilized electric drive with a control unit reverse with one control input. 3 hp f-ly, 3 ill. 4J W e

Description

The invention relates to a measuring technique, in particular to measuring devices for measuring parameters of gear wheels.

A device for contactless certification of angle transducers, comprising a controlled transducer, one revolution meter, a ring laser, an electromagnetic clutch, an electric drive, a logic unit, a memory register, two reversible counters, and a recording device are known. A controlled transducer, one turn marker, ring laser, electromagnetic clutch are located on the same axis as the electric drive. Controlled

the angle transducer is rotated at a constant angular velocity and the interval between two successive signals from the transducer is filled with pulses of a ring laser. Subtract the number of pulses from the ring laser between the first and second transducer signals from the number of pulses from the ring laser between the second and third, etc. The transducer signals judge the accuracy of the angle transducer.

A disadvantage of the known device is that it does not take into account the error introduced by the angular rotation.

About 00 00

about

Of the earth, affecting the number of pulses from a ring laser per revolution.

A device for testing gears using an annular laser, comprising an electric drive, a controlled wheel, a single revolution meter, a ring laser, an electromagnetic clutch, a lighter with a projection slot, an optoelectronic converter with a receiving slot, an electronic information processing unit, and a recording device are known. The controlled wheel, one turn marker, ring laser, electromagnetic clutch are located on the same axis by a electric drive. The controlled wheel is rotated with a uniform angular velocity, the interval between two consecutive transducer signals is pulsed from a ring laser, and from these results the actual values of the parameters of the gear wheels are judged, such as: the value of the nominal circumferential spacing of the accumulated wheel measurement error, etc. d.

A disadvantage of the known device is the error caused by the influence of the angular rotation of the Earth, making a change in the number of pulses from a ring laser per revolution.

The aim of the invention is to improve the accuracy of measuring the circumferential pitch and the accumulated error of gears.

FIG. 1 shows a block diagram of the device; in fig. 2 is a diagram of the formation of a forward and reverse signal; in fig. 3 is a block diagram of a stabilized electric drive with a reverse control unit.

The device for monitoring the circumferential pitch and the accumulated error of the gears, taking into account the error introduced by the angular rotation of the Earth, contains (Fig. 1) the illuminator 1 with a projection slot, an optoelectronic converter 2 with a receiving slot, a controlled gear 3, an annular laser 4 one-turn marker 5, stabilized electric drive b with a control unit, information processing electronic unit 7, Earth angular rotation compensation unit 8, recording device 9. Electronic information processing unit 7 Forms of entry

amplifier shaper 10 pulses, first counter 11 teeth, second counter 12 teeth, counter 13 number of wheel teeth one more, first AND 14 logic, trigger 15. 15 counter to two, second I-17 logic, pulse register 18 ring laser for the number of teeth of the wheel one more, register 19 pulses ring of the go laser for one full turn of the marker, comparison circuit 20, divider 21 by the number of wheel teeth, register 22 of the reference number of pulses, logic unit 2.3, first random access memory 24 , second prompt memory 25, a NOT 26 logic circuit, a subtracting unit 27, a constant register 28, a multiplier 29. Block I of the Earth’s angular rotation compensation module 8 includes a logic circuit AND 30, a register of 31 pulses of a ring laser for one full turn of the marker during reversal, the summation block 32, the subtracting unit 33, the first divider 34, the second divider 35, the unit 36 for calculating the compensation coefficient for the angular rotation of the Earth.

Accounting for the daily rotation of the Earth has found application in the dynamic hydro-compassing method, in which if the angular velocity vector whose direction is determined (for example, the angular velocity vector of the Earth's rotation) does not coincide with the mechanical scanning axis, then the output of the ring laser appears mistakes. The introduction of the Earth rotation compensation unit into the device helped to take into account the error caused by the rotation of the ring laser during the daily rotation of the Earth. The number of pulses at the exit of the ring laser can be represented as

N K (b p + Ozem),

where N is the number of pulses at the output of the ring blade;

. Вр- angle of rotation of the ring laser;

Ozem angle of rotation of the Earth;

K - coefficient of proportionality.

Then, for a full rotation of the ring laser during forward rotation, we have Mpr K (2 x + Ezem), for reverse rotation of the ring laser N06p. K (2yy-0m) and

., MPr + Mobr. L 4th

 Nnp N06p. zen 2 k

Cs

2n: +

land

2l:

where Cs is the compensation coefficient for the angular rotation of the Earth.

The algorithm for solving this problem is implemented in a device for monitoring and accumulated error of gear wheels in the form of a unit for compensating the angular rotation of the Earth. This unit in the composition of the device operates as follows.

Prior to the direct measurement of the gear parameters, the determination of the compensation factor for the angular rotation of the Earth for a given device location is given, for which the node on which the gear wheel, ring laser, one turn indicator, stabilized actuator with control unit rotates with a constant angle speed in the forward direction (for example, clockwise), then in the electronic unit from the output of the marker 5 one turn to the input of the counter 16 up to two le count The output of the counter to two is connected to the first input of the second logic circuit AND 17, the second input of the same circuit begins to receive pulses of a ring daser 4, from the output of the second logic circuit And 17 the pulses of a ring laser enter the register of 19 pulses of a ring laser for one full turn of the marker. In register 19, the pulses will end up in the case when the marker 15 makes a full turn. From the output of register 1.9, the signals arrive at the second inputs of summing 32 and subtracting 33 blocks located in block 8 for compensating the influence of the angular rotation of the Earth. After the information arrives at blocks 32 and 33, logic block 23, located in block 7, issues a command to the control circuit of the stabilized drive 6 for a reverse, which is a control command to the third input of the compensation block AND 30 and preventing the recording of pulses on the second This is a register input 19. The gear wheel, the ring laser and the one revolution marker in this case are rotated with a stabilized electric drive with a control unit in the opposite direction with constant speed. howl speed Then the pulse from the output of the marker 5 of one revolution is fed to the input of the counter 16 to two (block 7), and the output of the counter to two is connected to the first input of the logic circuit 30 and 30 (block 8). The second input of the circuit 30 receives pulses from the ring laser 4 during the reverse. The output of the logic circuit And block 8 is connected to the input of the register 31 of the pulses of the ring loser for one full turn of the marker with the sweeping. The pulses in block 31 will finish when the timer 5 makes a full turn. The output of the register 31 under the keys to the first inputs of the summing 32 and subtractive 33 blocks. The output of the summing block is connected to the input of the first divider 34, which performs the operation of dividing the sum (Nnp + Mobr) by 4 lg. The quotient from the division of the first divider comes on

the second input of the second divider 35, and the first input receives the difference (Mnr - N06p) from the output of block 33. In the second divider, the contents of block 33 are divided by the contents of block 34. Next, the contents of divider 35 are fed to the input of block 36 of the Earth’s angular rotation compensation factor formation in which the operation is performed

K- 2 + € W

wIn

The output of block 36 is connected to the fifth input of register 29 of constants (block 7). The input of the register 28 is the numerical value of the coefficient Kz.

Next, a direct measurement of the circumferential pitch and the accumulated error of the gears is performed. The stabilized electric drive 6 with the control unit rotates the controlled gear 3, together with the annular laser 4 and the marker 5 of one revolution with a constant angular velocity in the forward direction. The projection slit of the illuminator 1 forms a light stroke, which, reflected from the tooth profile of the controlled wheel, through the receiving slit hits the photosensitive surface of the optical-optical converter 2. The signal received by the optical-electronic converter goes to the first information input of the electronic information processing unit 7, which is the input of the amplifier-maker 10. From the output of the amplifier-maker, pulses are fed to the inputs of the first and second counters 11 and 12 of the teeth of the wheel and to the input of the counter 13 teeth teeth one more. The pulses from the ring laser 4 are fed to the second information input of the electronic unit 7, which is the second input of the first AND circuit 14, and the second input of the second AND circuit 17, as mentioned above. The signals from the marker 5 of this turnover go to the third information input of the electronic unit 7, which is counter 16 to two, and the first input of trigger 15. The inverse output of trigger 15 is connected to the third input of the first logic circuit 14 and the input of logic block 23. Signal from the trigger output, the incoming .to the input of the logic unit prepares the logic unit for operation. After receiving the signal from the trigger, the logical block from its first output issues a command to the first random access memory 24 to record information. The output of the counter 13 of the number of teeth of the wheel is one more connected to the second input of the first counter 11

teeth and the first input of the first logic circuit And 14. The output of the first logic circuit 14 is connected to the input of the register 18 pulses of a ring laser for the number of teeth of the wheel one more. The recording of information in the register 18 is stopped when the gear is fully rotated. Information from the first logic circuit 14 also arrives on the data bus of the first random access memory 24. On the address bus of the device 24, the signal arrives from the first counter 11 teeth. Thus, data is recorded in the first random access memory 24.

The output of the counter 16 to two is connected to the first input of the second logic circuit AND 17, to the second input of the circuit AND 17, as mentioned above, the output of the ring laser is connected. The pulses from the output of the circuit 17 are fed to the input of the register of 19 pulses per full turn of the marker. Register output

19 is connected to the input of the divider 21 on the number of teeth, and the output of the divider 21 - to the input of the register 22 of the reference number of pulses. Register 22 is fed to the third input of the subtracting unit 27. The contents of register 18 are entered at the first input of the circuit

20, the second input of circuit 20 enters the contents of register 19. In circuit 20, the number of pulses of a ring laser recorded in registers 22 and 31 is compared. When the number of pulses in both registers coincides, the signal from the comparison circuit arrives at the second input of trigger 15 and

. returns to its original state, then the same signal arrives at the readout input into the first random access memory 24. to the second input of the detracting unit 27, to the input of the logic circuit HE 26, which outputs a write signal to the second random access memory 25. Also From the comparison circuit, the 12 teeth are also fed to the second counter, which is connected by its output to the address bus of the second random access memory 25. After the receipt of the read command into the first random access memory 24 From the comparison circuit, the first input of the subtracting unit 27 receives the contents of the memory cells of the first random access memory, from which the reference number of pulses introduced into the subtracting unit to its third input is subtracted. Next, information is written from the output of the subtracting unit to the data bus of the second random access memory 25. After the end of the recording, the logic unit issues a command to read

the contents of the device 25 and the contents of the register 28 constants, in which the number z of the teeth of the wheel ia is preliminarily inserted into the second input, the module m of the wheel to the third

the input, the number of angular seconds at 360 ° to the fourth input, at the fifth input of the unit 36, the compensation coefficient of the angular rotation of the Earth K3L is entered. The content of block 28 is fed to the first input of multiplier 29, and

the contents of block 25 are the second. Information from the multiplier output is fed to a recording device 9.

An example of the execution of the block diagram of a stabilized electric drive with a block

reverse control is shown in FIG. 3. It consists of a logic circuit OR 37, a control block 38 and a stabilized electric drive 39.

The first input of the logic circuit OR

closed to the housing, and the second through the input of the stabilized drive with the control unit is connected with the control output of the reverse electronic data processing unit (Fig. 2.3). Logic OR

its output is connected to the input of the reversing control unit 38, and it. in turn, its output is connected to the input of a stabilized electric drive 39. When the drive is rotated in the forward direction, the

control does not affect the operation of the drive, however, when a reverse command is received from the electronic information processing unit, the logic circuit OR 37 passes a high level signal to the control unit

reverse and it issues a command to the stabilized electric drive for the reverse.

The use of a block to compensate for the influence of the angular rotation of the Earth will improve the accuracy of parameter measurements.

gears using a ring laser, It is known that when receiving pulses from a ring laser behind it. the full rotation their number will be different for different locations of the ring laser

relative to the Earth, which leads to measurement errors. The effect of this block will eliminate the error introduced by the angular rotation of the Earth.

Formula a la invention

Claims (4)

1. A device for controlling the circumferential pitch and accumulated error of gears, containing an illuminator with a projection slit, a one-turn marker, a ring laser, an optoelectronic converter with a receiving slit, an electronic information processing unit, a recording device, an electric drive, characterized in that, in order to improve measurement accuracy, the error compensation unit has information and one control inputs and one information output, and the electric drive is made in the form of a stabilized electric drive with a reverse control unit with one control input, the compensation unit being connected to the output with its first information input ohm ring laser, the second and third information and control inputs with the corresponding outputs of the electronic information processing unit, and the information output connected with the corresponding input of the electronic information processing unit, the control input of the stabilized electric drive connected with the corresponding output of the electronic unit processing information. 2. The device according to claim 1, that is, that the compensation block is made in the form of a logic circuit I, a register of pulses of a ring laser for one full turn of the one turn marker, the summing block, the subtracting block, the first divider, the second divider, the computation unit, the output of the logic circuit I is connected to the pulse register of the ring laser for one full turn of the marker, the output of the above register is connected to the first input of the summing unit and the first input of the subtracting unit, the output of the summing unit the output of the subtractor unit is connected to the first input of the second divider, the output of the first divider is connected to the second input of the second divider, the output of the second divider is connected to the input of the calculation unit, the information output of this unit is connected to the fifth input of the electronic constant register the block, the first input of the logic circuit AND through the second information input of the compensation block is connected with the output of the counter to two electronic units, the second inputs of the summing and subtracting blocks through the third information stroke compensation unit connected to the register pulse ring laser for one complete revolution of the electronic unit timer, the second input of the AND gate through the first information input of a logical AND circuit through a control input coupled to a second output logic block, a second output logic of the electronic unit block. 3, The device according to claim 1, in which the second input into the pulse laser register of the ring laser is entered for the full rotation of the marker, which is associated with the second output of the logic unit. 4. The device according to claim 1, that is, that the stabilized drive with the reversal control unit is made in the form of an OR logic circuit, a control unit and a stabilized drive, the output of the OR circuit is connected to the input the control unit, and the output of the control unit is connected to the input of the stabilized electric drive, the second input of the logic circuit OR as a control input is connected to the output of the logic unit located in the electronic unit, and the first input of the OR circuit is closed to the housing. CVL CO