Panel saw having a safety device for preventing cutting injuries

A circular saw comprising:

• a support surface for a workpiece, the support surface further comprising a saw blade slot;
• a main drive motor arranged below the support surface for driving a saw blade disposed in the blade slot in rotational movement;
• a saw blade holder connected to the main drive motor for the purpose of transmitting the rotational movement and comprising a saw blade bearing unit and a saw blade flange mounted so that the saw blade flange can be rotated about a saw blade axis by the saw blade bearing unit and so that the saw blade flange can be connected to the saw blade so that the saw blade is fixed in torsion;
• a height-adjustment apparatus comprising a height actuator and a transmission element coupled to the saw blade holder for adjusting the spacing between the saw blade holder and the support surface;
• an electronic interface for the input of a saw blade projection defining the spacing between the saw blade holder and the support surface;
• a control device in signal communication with the electronic interface and the height actuator, the control device adapted to activate the height actuator such that a saw blade projection input via the user interface is set by means of the height actuator;
• and
• a protection apparatus for quickly lowering the saw blade in a dangerous situation having a monitoring apparatus for detecting the dangerous situation;
• wherein the protection apparatus is in signal communication with the monitoring apparatus and the height actuator and is adapted to activate the height actuator for quickly lowering the saw blade holder when the dangerous situation is detected by the monitoring apparatus.

A circular saw comprising:

• a support surface for a workpiece, the support surface having a saw blade slot;
• a main drive motor arranged below the support surface for driving a saw blade in rotational movement;
• a saw blade holder connected to the main drive motor for the purpose of transmitting the rotational movement and comprising a saw blade bearing unit and a saw blade flange which is mounted so that the saw blade flange can be rotated about a saw blade axis by the saw blade bearing unit and is adapted to be connected to the saw blade so that the saw blade is fixed in torsion;
• and
• a protection apparatus for quickly lowering the saw blade in a dangerous situation, the protection apparatus comprising a monitoring apparatus for detecting a dangerous situation and a height-adjustment apparatus, with a height actuator and a transmission element coupled to the saw blade holder, which is adapted to lower the saw blade holder when a dangerous situation is identified by the monitoring apparatus;
• wherein the monitoring apparatus comprises an image capture apparatus and an image evaluation device and the image evaluation device is in signal communication with the height actuator to activate the height actuator when a dangerous situation is identified for quickly lowering the saw blade holder.

A circular saw comprising:

• a support surface for a workpiece, the support surface further comprising a saw blade slot;
• a main drive motor arranged below the support surface for driving a saw blade disposed in the blade slot in rotational movement;
• a saw blade holder operably coupled to the main drive motor for the transmitting the rotational movement and comprising a saw blade bearing unit and a saw blade flange, wherein the saw blade flange can be rotated about a saw blade axis by the saw blade bearing unit and so that the saw blade flange can be connected to the saw blade such that the saw blade is fixed in torsion;
• a height-adjustment apparatus comprising a height actuator and a transmission element coupled to the saw blade holder for adjusting the spacing between the saw blade holder and the support surface;
• an electronic interface for the input of a saw blade projection defining the spacing between the saw blade holder and the support surface;
• a control device in signal communication with the electronic interface and the height actuator, the control device adapted to activate the height actuator such that a saw blade projection input via the user interface is set by means of the height actuator;
• and
• a protection apparatus for quickly lowering the saw blade in response to a set of predetermined criteria defining a dangerous situation, the protection apparatus having a monitoring apparatus for detecting the dangerous situation;
• wherein the protection apparatus is in signal communication with the monitoring apparatus and the height actuator and is adapted to activate the height actuator for quickly lowering the saw blade holder when the dangerous situation is detected by the monitoring apparatus.