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Sheet-iron shears feeder

Project status:
Completed

For this project the goal was to modernize a sheet-irion shears machine with a measurement system based on step motors.

  • Change feed back and forth by controlling two stepper motors
  • Measure the distance to a calibrated zero point for accurate cutting
  • Display to show the distance
  • Controls to move the feeder
  • Calibration mode to re-calibrate the machine to mechanical zero

Concept

The feeder is moved back and forth by two big threaded rods and two stepper motors. The stepper motors are controlled by a custom made PCB.

The custom PCB was made with Diptrace and features two motor drivers, power supply, decoupling and also a STM32-discovery board. All electronics is then placed in a sturdy and closed metal box, so it can withstand the harsh conditions in a mechanics shop.

Sheet-iron shears machine
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Box with motor controller and power supply inside
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Left PCB is the motor controller PCB with the drivers on the backside, attached to a large heatsink. Right is the microcontroller board. Bottom is the large power supply.
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One of the two motors connected to the mechanics and threaded rod. The white part is for driving slip regulation.
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Project details

Project Voltages: 12.000, 5.000
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pascal
owner

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