Cross Tightening with Spin Robotics Screwdriving System

Cross tightening is a technique used to ensure even pressure on fasteners (bolts or nuts) by tightening them in an alternating pattern. Imagine drawing an "X" over the fasteners you'll be tightening. This method is achieved in two stages:

1. Criss-Cross Pattern (Low Torque): first instert each fastener following the criss-cross pattern tightening to a low torque target. This ensures all fasteners share the initial load and minimizes warping.
2. Final Tightening: Finally, apply the final specified torque to each fastener in the same criss-cross pattern, creating a uniform and secure clamp across the entire assembly.

Programming the Spin Robotics System:

1. Spin Dashboard:  On the Spin Dashboard, create two screw programs:
   • Quick Tightening: Set the desired low torque target value as the torque goal for this program.
   • Post Tightening: Set the desired final torque target value as the torque goal for this program.
2. Robot Programming: Program the robot's movements to follow the criss-cross pattern for each fastener.
3. Program Selection: Select the Quick Tightening program for the first round of screwdriving, followed by the Post Tightening program for the second round. This ensures the two-stage tightening process is followed for a secure assembly.

Additional Considerations:

• Refer to your specific Spin Robotics model's user manual for detailed instructions on programming screw programs and robot movements.
• Ensure the chosen low torque target value is sufficient to snugly hold the fasteners without warping the assembly.