A drill guide for a drill bit of a hand-held drill is disclosed. The drill guide includes a mount, a telescoping guard, and a guide foot. The mount is configured to couple to a non-rotating portion of the hand-held drill. The telescoping guard extends from the mount and is configured to telescope into a retracted position from an extended position. The guide foot is coupled to the telescoping guard opposite the mount such that the drill guide enshrouds the drill bit when the telescoping guard is in the extended position, and the drill bit passes through the guide foot as the telescoping guard telescopes into the retracted position from the extended position.

A hole-making system for making holes on the collar of a cylinder is provided. The hole making system includes a hand unit for making holes on the collar of the cylinder and the hand unit being configured to be used with two hands. The hole making system further includes a control unit configured to control operation of the hand unit. The hole making system further includes a pedal configured to enable a user to control the operation of the hand unit with a foot. The hand unit is held and controlled with two hands and a drilling command is provided by the pedal, allowing the user to control the hand unit in a more reliable manner.

A machining system configured to reduce spring back following machining operations comprising a machining tool and a spring back control system. The spring back control system comprises a number of force generators and a number of force loaded members coupled to the number of force generators, each force loaded member of the number of force loaded members comprising a material contact surface. The material contact surface is a roller, wherein the machining tool is independently moveable relative to the spring back control system.

A drill guide for a drill bit of a hand-held drill is disclosed. The drill guide includes a mount, a telescoping guard, and a guide foot. The mount is configured to couple to a non-rotating portion of the hand-held drill. The telescoping guard extends from the mount and is configured to telescope into a retracted position from an extended position. The guide foot is coupled to the telescoping guard opposite the mount such that the drill guide enshrouds the drill bit when the telescoping guard is in the extended position, and the drill bit passes through the guide foot as the telescoping guard telescopes into the retracted position from the extended position.

A machining system configured to reduce spring back following machining operations comprising a machining tool and a spring back control system. The spring back control system comprises a number of force generators and a number of force loaded members coupled to the number of force generators, each force loaded member of the number of force loaded members comprising a material contact surface.

A working machine comprising a working head (1) having a spindle (10) and which is movable in a xyz working space and further comprising a clamping device (2,3) for clamping pieces (100) to be worked by said machine. The clamping device (2,3) comprises first (21, 31) and second (22,32) clamping means which are movable along a z direction between a first operative position, in which they are in clamping contact with pieces (100) to be worked, and a second non-operative position, in which they are at a distance from said pieces (100), said first (21, 31) and second (22, 32) clamping means being fixed with respect to an xy working plane when in said first operative position and being movable together with said working head (1) in said xy working plane when in said second non-operative position, said first (21, 31) and second (22, 32) clamping means being alternatively moved between said first and second position during a working cycle of said working machine.

A drilling byproduct recovery system employs a vacuum shroud positioned adjacent a workpiece. A spindle extends from a base and engages a tool. The spindle vertically reciprocates the tool upwardly through an aperture in the vacuum shroud to engage the workpiece. A circumferential air jet is emitted proximate a base of the spindle and directed toward the vacuum shroud.

A machining system configured to reduce spring back following machining operations comprising a machining tool and a spring back control system. The spring back control system comprises a number of force generators and a number of force loaded members coupled to the number of force generators, each force loaded member of the number of force loaded members comprising a material contact surface. The material contact surface is a roller, wherein the machining tool is independently moveable relative to the spring back control system.

A drilling byproduct recovery system employs a vacuum shroud positioned adjacent a workpiece. A spindle extends from a base and engages a tool. The spindle vertically reciprocates the tool upwardly through an aperture in the vacuum shroud to engage the workpiece. A circumferential air jet is emitted proximate a base of the spindle and directed toward the vacuum shroud.

A working machine comprising a working head (1) having a spindle (10) and which is movable in a xyz working space and further comprising a clamping device (2,3) for clamping pieces (100) to be worked by said machine. The clamping device (2,3) comprises first (21, 31) and second (22,32) clamping means which are movable along a z direction between a first operative position, in which they are in clamping contact with pieces (100) to be worked, and a second non-operative position, in which they are at a distance from said pieces (100), said first (21, 31) and second (22, 32) clamping means being fixed with respect to an xy working plane when in said first operative position and being movable together with said working head (1) in said xy working plane when in said second non-operative position, said first (21, 31) and second (22, 32) clamping means being alternatively moved between said first and second position during a working cycle of said working machine.