Patent ID: 8936739
Filing Date: 2015-01-20
Classification: B29C

Abstract:
1. A reciprocating apparatus comprising: a reciprocating member configured to reciprocate freely; a drive mechanism configured to move the reciprocating member back and forth; an input device configured to input conditions in which to reciprocate the reciprocating member, the conditions including speed data for the reciprocating member and an input direction-switch position of the reciprocating member; a work-switch position calculating unit configured to calculate a work-switch position for the drive mechanism from the speed data input at the input device so that a direction-switch position of the reciprocating member may approach a value the input direction-switch position input at the input device; a calculated direction-switch position calculating unit configured to calculate a direction-switch position at which the reciprocating member must start moving in an opposite direction from a direction in which the reciprocating member was previously moving when the working of the drive mechanism is switched at the work-switch position calculated by the work-switch position calculating unit; a remaining-distance calculating unit configured to calculate a remaining distance that is a difference between the calculated direction-switch position calculated for the reciprocating member by the direction-switch position calculating unit and the input direction-switch position input at the input device; a target direction-switch position calculating unit configured to add the remaining distance calculated by the remaining-distance calculating unit to the direction-switch position calculated by the direction-switch position calculating unit, thereby calculating a target direction-switch position; and a corrected position calculating unit configured to calculate a corrected work-switch position for the drive mechanism so that the drive mechanism may cause the reciprocating member to start moving in the opposite direction at the target direction-switch position calculated by the target direction-switch position calculating unit.