SD35/70 Safety Features
Spin Robotics Safety Shield
The SD35/70 collaborative screwdriver has been designed such that the screw and the bit are always covered by the Spin Robotics safety shield to enhance safety for the user.
Note
As noted in the technical datasheet (Chapter 2), the maximal screw length within safety is 35 mm. The screw length is adjusted in the SpinInterface. See section 7.4 and the URCap installation/Screw Feeder see 5.5.4.
The shield retracts itself at 6 mm above the surface (see image below), during the screw insertion. Because hands and fingers are thicker than 6 mm, this ensures safety of operators working with the screwdriver.
Warning
If the distance for the safety shield retraction [S1] is set to more than 6 mm there are potential risk for crush hazard.
Safety Sensor
SD35/70 features a built-in performance level D safety sensor. If SD35/70 approaches the screw insertion point and experiences unexpected force of ≥ 45 N in the vertical direction, it will trigger an emergency stop. The safety system is a mechanical rail system that will push up the tool during robot motion. If the tool is pushed more than 10 mm the robot motion and the SD35/70 tool will shut off.
Warning
Do not install the SD35/70 in a collaborative application without installing the safety cable between the robot controller and the Spin Bridge. See how to install it in section 4.2.5
Programming Safe Robot Trajectories
To ensure that the forces during a potential impact between the SD35/70 tool and a human body part is not exceeding the force impact limits defined in ISO/TS15066 it is important that the approach movement is programmed such that the tool is perpendicular (90 degrees) to the screw insertion plane.
In this way the impact from the safety shield is decreased because the surface area of the tool tip is kept as large as possible.
