Oscillatory linear actuator and cutting device

An oscillatory linear actuator comprising:

• an output movable element which is reciprocated by a periodically varying magnetic field and performs work on an object;
• a vibration absorbing movable element which is reciprocated at a phase opposite to a phase of the output movable element and reduces vibration of the oscillatory linear actuator;
• a first holder that holds the output movable element and that is reciprocated together with the output movable element;
• a second holder that holds the vibration absorbing movable element and that is reciprocated together with the vibration absorbing movable element;
• and
• an elastic connector connecting the first holder and the second holder, the elastic connector being configured to, along a first axis, allow amplitude of reciprocating the vibration absorbing movable element held by the second holder to be greater than amplitude of reciprocating the output movable element held by the first holder,
• wherein the vibration absorbing movable element is lighter in weight than the output movable element,
• wherein the output movable element comprises:
• a body including an attachment part held by the first holder, wherein the attachment part extends in an x-y plane;
• a shaft extending from a portion of the body in a first direction along a third axis perpendicular to a first axis and a second axis, wherein a distal end of the shaft is adapted to support an attachment that is driven by the oscillatory linear actuator;
• and
• a weight support extending from the attachment part in a second direction, opposite the first direction, along the third axis, wherein the weight support extends to a side face of a coil of an electromagnet disposed underneath the first and second holders, and wherein a distal end of the weight support holds a first weight to maintain balance of the attachment against the attachment part.