Curved plate machining apparatus, and method of manufacturing curved plate with machined outer circumference

A machining apparatus for a curved plate comprising:

• a holder that holds a main surface of a curved plate having curved surfaces;
• a machining device that machines an outer circumference of the curved plate held by the holder;
• a movable frame that retains the machining device;
• a driver that moves the movable frame to move a machining point of the curved plate held by the holder;
• and
• a controller that controls the driver,
• wherein the holder includes a guide that guides the movable frame along the outer circumference of the curved plate held by the holder.

A manufacturing method of a curved plate with a machined outer circumference, the method comprising:

• holding a main surface of a curved plate having curved surfaces by a holder;
• machining an outer circumference of the curved plate, held by the holder, by a machining device;
• and
• guiding, when a movable frame that retains the machining device is moved in the machining, the movable frame along the outer circumference of the curved plate held by the holder, by using a guide.

A manufacturing method of a curved plate with a machined outer circumference, the method comprising:

• holding a main surface of a curved plate having curved surfaces by a holder;
• machining an outer circumference of the curved plate, held by the holder, by a machining device;
• and
• guiding, when a movable frame that retains the machining device is moved in the machining, the movable frame along the outer circumference of the curved plate held by the holder, by using a guide included in the holder.