A mower reel grinding apparatus for a plurality of type of mower units, the apparatus including an enclosure including a plurality of predetermined fixed positions, each predetermined fixed position corresponding to at least one type of mower unit of the plurality of mower units, a grinding wheel, and a bracket to receive and releasably secure to a predetermined location on any one of the plurality of types of mower units, the bracket moveable to the predetermined fixed position corresponding to the type of mower unit releasably secured thereto such that a cutting reel of the mower unit is positioned at a desired position relative to the grinding wheel.

A mower reel grinding apparatus for a plurality of type of mower units, the apparatus including an enclosure including a plurality of predetermined fixed positions, each predetermined fixed position corresponding to at least one type of mower unit of the plurality of mower units, a grinding wheel, and a bracket to receive and releasably secure to a predetermined location on any one of the plurality of types of mower units, the bracket moveable to the predetermined fixed position corresponding to the type of mower unit releasably secured thereto such that a cutting reel of the mower unit is positioned at a desired position relative to the grinding wheel.

A blade sharpener for use with a powered rotary tool having a rotatable sharpening element includes a main body having a bore for receiving the powered rotary tool, where the bore extends through the main body along an axis and the main body has a first channel for receiving a blade to be sharpened. The first channel is perpendicular to the rotary axis and opens into the bore to permit a blade to engage the sharpening element. The blade sharpener also includes a guide having a guide channel for receiving a blade to be sharpened where the guide is pivotally attached to the main body to accommodate any curvature of a blade to be sharpened as the blade sharpener follows along the blade.

A lawn mower blade sharpening and task robot that autonomously drives under a lawn mower including a body, at least one motor, and a microprocessor. The robot also includes at least one a camera for object recognition and visualization of at least one of the lawn mower, a lawn mower deck, a lawn mower blade, and a lawn mower blade cutting edge, and at least one a sensor to sense the lawn mower, the lawn mower deck, the lawn mower blade, and lawn mower cutting edge. The robot may also include at least one of a task tool, a task arm, a task tip, and a task element in order to complete tasks such as sharping lawn mower blades and cleaning lawn mower blades.

An adaptor for mower blade sharpening, the adaptor incorporating a U bracket having a proximal leg having upper and lower ends, a distal leg having upper and lower ends, and a web spanning laterally between the legs'upper ends; the adaptor further incorporating a table underlying the U bracket's web, the table spanning laterally between the U bracket's proximal and distal legs; the adaptor further incorporating mounting flanges for mounting the table upon the U bracket, the mounting flanges forwardly extending the table from the U bracket's proximal and distal legs; the adaptor further incorporating an annular clamp which is fixedly attached to the U bracket's web.

A lawn mower blade sharpening and task robot that autonomously drives under a lawn mower including a body, at least one motor, and a microprocessor. The robot also includes at least one a camera for object recognition and visualization of at least one of the lawn mower, a lawn mower deck, a lawn mower blade, and a lawn mower blade cutting edge, and at least one a sensor to sense the lawn mower, the lawn mower deck, the lawn mower blade, and lawn mower cutting edge. The robot may also include at least one of a task tool, a task arm, a task tip, and a task element in order to complete tasks such as sharping lawn mower blades and cleaning lawn mower blades.