Polishing machine

A polishing machine comprising:

• a carrier being formed as a plate, said carrier having a through-hole in which a work piece is accommodated;
• an upper polishing plate being provided on an upper side of said carrier, said upper polishing plate polishing an upper face of the work piece in the through-hole of said carrier;
• a lower polishing plate being provided on a lower side of said carrier, said lower polishing plate pinching the work piece with said upper polishing plate and polishing a lower face of the work piece;
• and
• a driving mechanism for moving said carrier along a circular orbit in a plane, which is parallel to upper and lower faces of said carrier, without revolving, such that the upper and lower faces of the work piece, which has been pinched between said polishing plates, are polished by said polishing plates, wherein said driving mechanism includes:
• a base member;
• a carrier holder for holding said carrier;
• a crank-shaped member including a first shaft, which is arranged perpendicular to the upper and lower faces of said carrier and whose one end is pivotably connected to said carrier holder, and a second shaft, which is arranged in parallel to the first shaft and whose one end is pivotably connected to said base member;
• and
• a rotating unit for rotating the second shaft of said crank-shaped member on its own axis, such that the first shaft of said crank-shaped member is moved round and said carrier holder is moved along a circular orbit without revolving.

A polishing machine, comprising:

• a carrier being formed as a plate, said carrier having a through-hole in which a work piece is accommodated;
• an upper polishing plate being provided on an upper side of said carrier, said upper polishing plate polishing an upper face of the work piece in the through-hole of said carrier;
• a lower polishing plate being provided on a lower side of said carrier, said lower polishing plate pinching the work piece with said upper polishing plate and polishing a lower face of the work piece;
• a driving mechanism for moving said carrier along a circular orbit in a plane, which is parallel to upper and lower faces of said carrier, without revolving, such that the upper and lower faces of the work piece, which has been pinched between said polishing plates, are polished by said polishing plates;
• and
• a vibration restraining mechanism capable of contacting said upper polishing plate so as to restrain vibration of said upper polishing plate in the direction parallel to the upper and lower faces of said carrier.

A polishing machine, comprising:

• a carrier being formed as a plate, said carrier having a through-hole in which a work piece is accommodated;
• an upper polishing plate being provided on an upper side of said carrier, said upper polishing plate polishing an upper face of the work piece in the through-hole of said carrier;
• a lower polishing plate being provided on a lower side of said carrier, said lower polishing plate pinching the work piece with said upper polishing plate and polishing a lower face of the work piece;
• a driving mechanism for moving said carrier along a circular orbit in a plane, which is parallel to upper and lower faces of said carrier, without revolving, such that the upper and lower faces of the work piece, which has been pinched between said polishing plates, are polished by said polishing plates;
• a rotary shaft being arranged in the direction perpendicular to the upper and lower faces of said carrier, said rotary shaft being revolved on its own axis, one end of said rotary shaft being fixed to said upper polishing plate to suspend and revolve said upper polishing plate;
• and
• an elevating member holding said rotary shaft, said elevating member being capable of vertically moving together with said rotary shaft, such that polishing faces of said upper polishing plate and said lower polishing plate are maintained parallel, and load of said upper polishing plate is uniformly applied to said work piece.