SU1608617A1 - Multispindle nut driver - Google Patents

Multispindle nut driver Download PDF

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Publication number
SU1608617A1
SU1608617A1 SU874301355A SU4301355A SU1608617A1 SU 1608617 A1 SU1608617 A1 SU 1608617A1 SU 874301355 A SU874301355 A SU 874301355A SU 4301355 A SU4301355 A SU 4301355A SU 1608617 A1 SU1608617 A1 SU 1608617A1
Authority
SU
USSR - Soviet Union
Prior art keywords
inputs
outputs
output
pulse
triggers
Prior art date
Application number
SU874301355A
Other languages
Russian (ru)
Inventor
Виталий Валентинович Устинов
Original Assignee
Специализированное Конструкторское Бюро По Механизации И Автоматизации Слесарно-Сборочных Работ "Мехинструмент"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Специализированное Конструкторское Бюро По Механизации И Автоматизации Слесарно-Сборочных Работ "Мехинструмент" filed Critical Специализированное Конструкторское Бюро По Механизации И Автоматизации Слесарно-Сборочных Работ "Мехинструмент"
Priority to SU874301355A priority Critical patent/SU1608617A1/en
Application granted granted Critical
Publication of SU1608617A1 publication Critical patent/SU1608617A1/en

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Abstract

The invention relates to mechanical engineering and can be used in the assembly of group threaded connections. The aim of the invention is to improve the accuracy of control when assembling threaded connections. The multi-spindle nut wrench contains a motor and spindles with working heads, kinematically connected with the motor shaft. An angle sensor is installed on the engine shaft. Electromagnetic clutches and torque sensors are mounted on each spindle. The electromagnetic clutch control unit includes a pulse generator, a pulse counter, a decoder, two software switches, a pulse shaper, two triggers, three AND elements, two groups of comparators by the number of wrench spindles, a group of AND elements, OR elements, transistor switches and indicators. Introduction of torque sensors to the multi-spindle torque wrench, by the number of wrench spindles, trigger groups, generator and pulse shaper improves the assembly quality of threaded connections and reveals defects during assembly of threaded connections. 2 Il.

Description

and

ke

The invention relates to mechanical engineering, namely to wrenches, which can be used in assembling group-threaded connections. The purpose of the invention is the point-to-point control when assembling the threaded

bones

on faith we

HOI

burned

connection.

FIG. 1 shows a functional diagram of a multi-index Taiko in FIG. 2 - time diagrams for details of the operation of the multi-spindle nut driver

Multispindle nut wrench Soder engine 1, angle sensor 2, mounted on the motor shaft, spindles 3.1-Z.p with working heads 4.1-4.P and sensors 5.1-5.P. torque, driven shafts 6.1-6.p; 7.1-7.P electromagnetic clutches, 8.1-8.P driven gears, 9.1-9.p gearboxes, central gear 10 and electromagnetic clutch control unit 1 1 containing a counter of 12 pulses, a decoder 13, the first and second program switches 1.4 and 15 , the first and second elements And 16 and 17, the first and second triggers 18 and 19, the third element And 20, the generator 21 pulses, shaper 22 pulses by the number of spindles of the group of the first and second com05

ABOUT

ch

arator 23.1-23.n and 24.1-24.n, a group of first and second triggers 25.1-25.n and 26.1-26.p, a group of elements And 27.1-27.p, a group of elements LI 28.1-28.8.vv a group of counters 29.1 -29, p. pulses, the third group of flip-flops is 30.1-30.p, indicators 31.1-31.p and transistor switches 32.1-32.p, windings 33.1-33.p excitation of electromagnetic couplings.

The multi-spindle nutrunner works as follows.

The working heads 4 set the wrench on the nuts (not shown) of the threaded connection and turn on the engine 1 and the control unit 11, previously set to the initial state. At the same time, on the in-out exits of the second group 26jo

flip-flops, the voltage of the logic unit, the transistor switches 32 are open, and the electric excitation windings 33. Magnetic clutches 7 are connected to a power source, electromagnetic clutches 25 7 are switched on and transmit the rotation of the engine to the working heads. When this happens free screwing

nuts all shpivdel mi.

When the control unit 11 is turned on, the output of the generator 21 appears and the 1-pulses that arrive at the counting inputs of the counters 12 and 29 of the pulses, the capacity of which is the same. At the same time, at the inputs of the pulse counter 12, a binary-decimal code is formed, which decoder

13 is converted to a decimal positioning code, which is fed to the inputs of program switches.

14 and 15.

If the code at the outputs of the de-. encoder 13 with the code for the maximum allowed knot knot dialed

program switch 14 on

the output of the element And 16 appears voltage logical one, which

The first trigger 18 is set to

single state. In this case, it means that the condition of coincidence

for the element And 20 and at its output a voltage of logical one appears.

Nice which goes to the D-inputs

triggers 30.

 With further counting pulses.

the generator 21, the counter 12, coincides the code at the outputs of the descrambler 13 with the code of the minimum allowable tightening angle dialed by

50

.

five

frame switch 15. At the output of the element And 17 there is a voltage of the logical unit, which trigger 19 is set to one state. In this case, the coincidence condition for the element AND 20 ceases to be fulfilled and at its output a voltage of logical zero appears.

Upon further receipt of pulses, the contents of pulse counter 12 are reduced and it is set to zero. Upon receipt of the next pulse from the output of the generator 21, the voltage of the logical unit appears at the output of the higher discharge of the pulse counter 12, and a short pulse is formed on the leading edge of which by the shaper 22, which sets the triggers 18 and 19 to the initial state.

Simultaneously with the reset of the counter 12, the counters 29 overflow. The pulse from the high bit output of the counter 29 enters the clock input of the trigger 30. At that, since the D input has a logic zero, the trigger 30 at the end of the pulse output from the high one the discharge of counter 29 remains in the zero state.

The process described is repeated periodically with a period defined by the formula

T NC,

where T is the repetition period of overflow pulses at the output of the most significant bit of the counter 12 pulses;

T is the pulse repetition period of the generator;

0

N - the capacity of the counter 12 pulses.

In this case, the interval of permissible values of the angle of tightening is converted at the output of the element AND 20 into a time interval.

After the ends of the nuts come into contact with the bearing surface of the assembly, the process of tightening the threaded connections begins, the torque on the nuts begins to increase, therefore, the voltage taken from the outputs of the torque sensors 5 begins to increase.

After reaching a torque on any spindle magnitude.

With which the starting angle is started (the torque value is selected within the range of 20-30% of the required tightening torque) the percussion comparator 23 is triggered, the voltage of the logical unit NIC11 appears at its output, by which the trigger 25 is set to one state the

At the same time, the matches for the element AND 27 begin to be executed and information pulses from the angle sensor output begin to arrive at the countable input of the pulse counter 29;

Since the pulses from the output of the 3gla sensor arrive only at the counting inputs of the pulse counters 29, the overflow of the counters 29 will come earlier than the counter 12, and the pulse

at the output of the high and the counter 29 will be shifted by the pulse of the overflow output of the high bit of the counter, time T, equal to

overflow

chatter

relationship

on i

12

la

Where

TgT. -Nj, .T ,,

pulse repetition period of the generator;

N. is the number of impulses of the sensor; ° 2 angles received at the counting input of the counter .29. pulses.

As the angle of the load increases, the overflow at the output of the high bit of the counter 29 becomes increasingly more pronounced with respect to the perforation pulse at the output of the high level counter 12. When the minimum delay is reached, the pulse of the overflow of the high discharge of the high pulse counter matches in time

on the code element And 20, the value of which determines the interval of acceptable values of the angle

In this case, the D-input of the flip-flops 30 contains the voltage of the logical unit and the pulse from the high-order output of the counter 29 corresponds to the trigger 30 in the unit state, at its output

nick poop yroj ka.

Multi-spindle wrench, engine soda, spindles with working heads, kinematically connected to the engine shaft, on the shaft of which an angle sensor is installed, electromagnetic clutches installed on each spindle, and an electromagnetic clutch control unit, include a pulse counter, outputs are connected to the inputs decoder, the outputs connected to the inputs of the first and second software switches, the outputs of which are connected

each voltage of the logic one is 5 with the inputs of the first and

indicator 31 lights up, indicating that the pulling is in the field of the allowed second AND elements, whose outputs are connected to the setup inputs of the first and second triggers,

When the torque reaches the nominal value, the comparator 24 is triggered, the voltage of the logical unit appears at its output, by which the motor 26 is set to one state, the voltage of the logical zero appears at its inverse output, the transistor switch 32 closes and disconnects the excitation winding 33 of the electromagnetic clutch 7 from the power source. The clutch 7 is released, the clamping of this spindle is terminated.

 After the trigger 26 is set to one, the coincidence condition for the element And 27 ceases to be fulfilled and the output of the angle sensor 2 is disconnected from the counting input

0 corresponding counter 29 pulses.

If the tightening angle exceeds the maximum allowable, then the pulse at the output of the higher bit

5, the counter 29 does not coincide in time with the pulse at the output of the element 20. At the D input of the trigger 30, the voltage of the logical zero and the corresponding trigger 30 with the overflow pulse from the high bit output of the corresponding counter 29 return to their initial state. the logical zero voltage is on, and the indicator 31 goes out, which is

It indicates that the tightening angle is out of the floor tolerance.

After all the spindles are tightened, the engine is disconnected and the wrench is retracted from the assembled assembly.

Claims (1)

  1. Invention Formula
    Multi-spindle nut wrench containing engine, spindles with working heads, kinematically connected to the motor shaft, on the shaft of which the angle sensor is mounted, electromagnetic clutches mounted on each spindle, and an electromagnetic clutch control unit, including a pulse counter, outputs are connected to the inputs the decoder, the outputs connected to the inputs of the first and second software switches, the outputs of which are connected
    with the inputs respectively the first and
    the second And elements, the outputs of which are connected to the set inputs of the first and second triggers, the third element I, the first inputs connected to the direct output of the first trigger, and the second input to the inverse output of the second trigger, according to the number of spies, the first and second comparators, the first inputs of which are the inputs of the reference signal of the electromagnetic clutch control unit, the group of elements AND, the transistor switches, the indication elements and the group of pulse counters, the first inputs of the group of elements AND are connected to the output of the sensor angle, the outputs of the transistor switches are connected to the excitation pulses of the corresponding electromagnetic couplings, the power inputs of the transistor switches are connected to the power input of the electromagnetic clutch control unit, characterized in that, in order to improve the accuracy of control when assembling the threaded connections, the multi-wrench is equipped with a sensor Kami moment installed l on the spindle x-wrench pulse generator; pulse generator as well as by the number of spindles - OR elements, first, second and third groups of triggers, with the input of the inverse counting of the pulse counter connected to the output of the pulse generators, the output of the higher bit — to the input of the pulse former, the output of which is connected to the reset inputs the first and second triggers, the outputs of the comparators of the first group are connected to the setup inputs of the corresponding 5 triggering triggers of the first group, the outputs of the second group of comparators are connected to the installation inputs of the corresponding trigger the second group, the inverse outputs connected to the second inputs of the corresponding elements AND groups, the third inputs of which are connected to the direct outputs of the corresponding triggers of the first group, the control inputs of the transistor switches are connected to the inverse outputs of the corresponding triggers of the second group, are connected to the outputs of the senior bits of the corresponding pulse counters of the group, information inputs - to the output of the third element I, and outputs to the corresponding indicator am, elements OR the first inputs are connected to the output of the pulse generator, the second inputs to the outputs of the corresponding elements of the AND group, the outputs to the counting inputs of the corresponding pulse counters of the group, and the outputs of the torque sensors are connected to the corresponding second inputs of the coparators of the first and second groups.
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SU874301355A 1987-07-08 1987-07-08 Multispindle nut driver SU1608617A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU874301355A SU1608617A1 (en) 1987-07-08 1987-07-08 Multispindle nut driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU874301355A SU1608617A1 (en) 1987-07-08 1987-07-08 Multispindle nut driver

Publications (1)

Publication Number Publication Date
SU1608617A1 true SU1608617A1 (en) 1990-11-23

Family

ID=21325947

Family Applications (1)

Application Number Title Priority Date Filing Date
SU874301355A SU1608617A1 (en) 1987-07-08 1987-07-08 Multispindle nut driver

Country Status (1)

Country Link
SU (1) SU1608617A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106737357A (en) * 2017-03-31 2017-05-31 孟易鸿 Power Control and dynamic keep away the electric fixed-torque spanner control device and method at peak

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106737357A (en) * 2017-03-31 2017-05-31 孟易鸿 Power Control and dynamic keep away the electric fixed-torque spanner control device and method at peak

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