Automatic bore detection in CNC automatic screwdriving machines with the B50 vision sensor

In highly automated assembly, for example when joining Bakelite panels to MDF substrates, precision is the most important currency. Conventional CNC automatic screwdrivers often reach their limits when component tolerances lead to incorrect screw connections. The solution for fast and precise tool positioning is the integration of intelligent vision sensors.

A drill is positioned over a wooden plate and is supposed to drill a hole at the marked point.
The B50S002 vision sensor reliably detects the drilling center point and thus ensures precise tool positioning.

Precise coordinate determination using the B50S002 vision sensor

In order to screw Bakelite panels together precisely, the system must dynamically detect the center of the hole. The wenglor vision sensor B50S002 offers a powerful all-in-one solution for this:

  • Integrated illumination: Ensures optimum contrasts to reliably identify drill holes even on challenging surfaces.
  • Intelligent circle fit tool: Within the uniVision software, the tool precisely calculates the center of the diameter of a master part.
  • Coordinate transformation: By measuring at a defined position, the coordinate system of the CNC machine is aligned with that of the B50 and saved. This enables an exact spatial assignment of all subsequent drilling positions.

The automated process in detail

During operation, the tool head positions itself with the clamped screw over the target hole. Instead of moving to rigidly programmed points, real-time correction takes place:

  1. The B50S002 determines the actual position of the drilling center point.
  2. The exact coordinates are sent directly to the CNC control.
  3. The automatic screwdriver screws both materials together precisely and without risk of damage.

Customer benefits: Process reliability and economic efficiency

The automation of this process using wenglor vision sensors offers significant advantages for modern production lines:

  • Reduction of cycle times: The lightning-fast calculation of coordinates enables maximum processing speed.
  • Avoidance of rejects: Precise centering of the screw prevents material damage to Bakelite or MDF panels.
  • Easy integration: The B50 series can be seamlessly integrated into existing CNC environments.

Author

Picture of Max Mustermann

Max Mustermann

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