Apparatus for clamping and boring workpieces

A portable tool for clamping and boring workpieces that are to be joined at a joint location, comprising a tool body, a linear guide bearing in said tool body, a clamping yoke having a free end with a clamp jaw thereon and a connected end that is guidedly movably received in said linear guide bearing, a first pneumatic cylinder device arranged on said tool body and including a piston that is connected to said clamping yoke for moving said clamping yoke to carry out a clamping motion, a clamp counter member having an axial opening therein and being arranged on said tool body opposite and facing said clamp jaw with a space therebetween adapted to receive said workpieces in said space and clamp said workpieces between said clamp jaw and said clamp counter member, a pneumatic boring machine including a pneumatic motor arranged on said tool body and axially aligned with said clamp jaw and said clamp counter member and adapted to receive a boring bit to extend axially through said axial opening in said clamp counter member, a second pneumatic cylinder device arranged on said tool body and connected to said boring machine to move said boring machine to carry out a boring feed advance motion toward said clamp jaw, and at least one pneumatic conduit connecting said first pneumatic cylinder device, said second pneumatic cylinder device and said pneumatic motor in such a manner that pressurized air is provided to said second pneumatic cylinder device and to said pneumatic motor responsive to said first pneumatic cylinder device moving said clamping yoke to carry out said clamping motion.

An apparatus for clamping and boring workpieces that are to be joined at a joint location on the workpieces,

• comprising a tool body, and a clamp device and a boring device respectively arranged on said tool body,
• wherein said clamp device comprises a clamping yoke with a clamp jaw element, and a clamping actuator comprising a pneumatic piston-cylinder device connected to said clamping yoke and adapted to move said clamping yoke so that said clamp jaw element moves in a clamping direction toward the joint location on the workpieces from an open starting position in which said clamp jaw element is disengaged from the workpieces to a clamping position in which said clamp jaw element is clampingly engaged with the workpieces,
• wherein said boring device comprises a boring machine adapted to receive a boring bit at a bit end of said boring machine, and a feed advance drive comprising a boring feed advance cylinder connected to said boring machine and adapted to move said boring machine in a feed advance direction opposite said clamping direction toward the joint location on the workpieces from a starting position to a boring position,
• further comprising a feed advance air conduit connecting said pneumatic piston-cylinder device of said clamping actuator with said boring feed advance cylinder such that pressurized air can flow from said pneumatic piston-cylinder device to said feed advance cylinder and cause said boring machine to move in said feed advance direction when a piston of said pneumatic piston-cylinder device is at an end of its stroke and said clamping yoke has been moved into said clamping position, and
• further comprising a damper device arranged on said tool body such that said boring machine is pushed against said damper device when said boring machine moves in said feed advance direction.