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RU-2026112596-A - METHOD AND SYSTEM FOR CONTROL OF TRACKING CUTTING IN A STRIP CROSS-CUTTING MACHINE

RU2026112596ARU 2026112596 ARU2026112596 ARU 2026112596ARU-2026112596-A

Inventors

  • СУНЬ, Юаньюань
  • ЦЗУН, Лянкуй

Assignees

  • ВИСДРИ ИНЖИНИРИНГ энд РИСЕРЧ ИНКОРПОРЕЙШН ЛИМИТЕД

Dates

Publication Date
20260505
Application Date
20231124
Priority Date
20230925

Claims (20)

  1. 1. A method for controlling tracking cutting in a cross-cutting machine for strips, characterized in that it includes:
  2. S1, based on the cutting length and cutting speed, the working speed of the machine is determined;
  3. S2, based on the machine speed and the minimum acceleration distance, the tracking cutting acceleration is calculated; if the specified acceleration is not greater than the maximum tracking cutting acceleration set by the program, the machine operates in normal mode; otherwise, cyclically decrease the preset value as the current machine speed;
  4. S3, in accordance with the set cutting parameters, calculates the theoretical position of each cut steel sheet, monitors the current sheet position in real time, and compares it with the encoder position received from the machine's speed roller. If the deviation exceeds the set deviation limit, an alarm is issued via the HMI, requesting an inspection.
  5. S4, according to the given cutting task parameters and the current state, calculate the optimal speed of returning to the starting point after cutting; by dynamically adjusting the cutting return speed, the actual total time of the cutting process becomes closer to the expected total time.
  6. 2. A method for controlling tracking cutting in a strip cross-cutting machine according to paragraph 1, characterized in that S1 includes:
  7. If the expected machine speed exceeds the maximum machine speed, the final machine speed will be equal to the maximum machine speed; otherwise, the final machine speed will be equal to the expected machine speed.
  8. 3. A method for controlling tracking cutting in a strip cross-cutting machine according to claim 1, characterized in that S2 includes:
  9. If the specified acceleration is greater than the maximum acceleration during tracking cutting specified by the program, the operating speed of the controlling machine is reduced by the speed reduction value specified by the program to the current operating speed of the machine, and the acceleration during tracking cutting is calculated as the current acceleration based on the current operating speed of the machine and the minimum acceleration distance; if, upon repeated comparison, the current acceleration is still greater than the maximum acceleration during tracking cutting specified by the program, the machine cannot operate.
  10. 4. A method for controlling tracking cutting in a strip cross-cutting machine according to paragraph 3, characterized in that S2 includes:
  11. When the machine cannot work, prompt the user to change the machine set speed or cutting set speed.
  12. 5. A method for controlling tracking cutting in a strip cross-cutting machine according to claim 1, characterized in that S3 includes:
  13. If the deviation exceeds the set deviation limit, an encoder check alarm will be issued through the HMI, and the machine will stop when this signal is received.
  14. 6. A method for controlling tracking cutting in a strip cross-cutting machine according to paragraph 5, characterized in that S3 includes:
  15. After the prompt appears, check the measuring wheel encoder. If slippage is observed, depending on the situation, clean the measuring wheel, adjust the air pressure on the measuring wheel, or check the encoder connections or the encoder's functionality to minimize errors at the cutting site and ensure cutting accuracy and quality.
  16. 7. A method for controlling tracking cutting in a strip cross-cutting machine according to claim 6, characterized in that S3 includes:
  17. actual value of the machine speed roller (m/s): ; the time from one cut to the next is t (s); the position of the tracking cut, recorded at each cut, is ; calculated current traveled distance of the strip (mm) ; That ;
  18. actual travel distance of the steel sheet measured by the measuring wheel (mm) ; when the alarm value is 50mm, if , then the program considers this normal, POS_ERROR is equal to 0; if , then the program displays an alarm signal, POS_ERROR is equal to 1.
  19. 8. A method for controlling tracking cutting in a strip cross-cutting machine according to claim 1, characterized in that S4 includes:
  20. maximum forward stroke (mm): ;