A balancer mechanism for a rotating shaft is capable of preventing deviation of the axis of the rotating shaft. The balancer mechanism (20) has an assistance torque generation means (21) for generating an assistance torque; the assistance torque generation means (21) includes a cam member (24) fixed to the rotating shaft (4), a cam follower member (25) and a gas spring (27); and a reaction force generation means (22) is provided for generating, by the biasing force of the gas spring (27), a balancing moment that cancels out a tilting moment that tilts the rotating shaft (4) around a bearing member (9) in a direction to separate it from the assistance torque generation means (21).

A balancer mechanism for a rotating shaft is capable of preventing deviation of the axis of the rotating shaft. The balancer mechanism (20) has an assistance torque generation means (21) for generating an assistance torque; the assistance torque generation means (21) includes a cam member (24) fixed to the rotating shaft (4), a cam follower member (25) and a gas spring (27); and a reaction force generation means (22) is provided for generating, by the biasing force of the gas spring (27), a balancing moment that cancels out a tilting moment that tilts the rotating shaft (4) around a bearing member (9) in a direction to separate it from the assistance torque generation means (21).

A tooling pivot is configured to pivot and to hold a tool in a plurality of operating positions. The tooling pivot includes a bracket, a tooling plate, a motor, a brake, and a controller. The tooling plate is connected to the bracket, connectable to the tool, and rotatable. The motor is connected to the bracket and to the tooling plate and is configured to rotate the tooling plate to an operating position. The brake is connected to the bracket and is configured to hold the tooling plate in the operating position. The controller is connected to the motor and to the brake and is configured to control the motion and position of the tooling plate and to control the holding of the tooling plate. The brake is configured to release the tooling plate when the motor rotates the tooling plate to the operating position.

The present invention includes a table (2) for placing a workpiece (Wa) thereon, a supporting mechanism (10) including a rotary shaft (15, 16) and supporting the table (2) so as to be able to rock the table (2) about an axial center of the rotary shaft (15, 16), a first drive motor (20) rotating the rotary shaft (15) of the supporting mechanism (10) to rock the table (2), a balance imparting mechanism (30) imparting a balance load to the rotary shaft (15) in accordance with a position of rocking of the table (2), and a controller (50) controlling the first drive motor (20). The balance imparting mechanism (30) includes an eccentric disc (31) having a circular plate shape and connected at a position eccentric from a center thereof to the rotary shaft (15), a housing (32) holding an outer periphery of the eccentric disc (31) via a bearing (33), and a load imparting unit (35) imparting the balance load to the housing (32) in a direction intersecting an axis of the rotary shaft (15).

The present invention includes a table (2) for placing a workpiece (Wa) thereon, a supporting mechanism (10) including a rotary shaft (15, 16) and supporting the table (2) so as to be able to rock the table (2) about an axial center of the rotary shaft (15, 16), a first drive motor (20) rotating the rotary shaft (15) of the supporting mechanism (10) to rock the table (2), a balance imparting mechanism (30) imparting a balance load to the rotary shaft (15) in accordance with a position of rocking of the table (2), and a controller (50) controlling the first drive motor (20). The balance imparting mechanism (30) includes an eccentric disc (31) having a circular plate shape and connected at a position eccentric from a center thereof to the rotary shaft (15), a housing (32) holding an outer periphery of the eccentric disc (31) via a bearing (33), and a load imparting unit (35) imparting the balance load to the housing (32) in a direction intersecting an axis of the rotary shaft (15).