A gearbox for a rack (6) and pinion (4) linear transmission, said gearbox further includinga reduction gear train (1-4) having at least a first (1), a second (2), a third (3), and a fourth gear wheel (4), where the fourth gear wheel is the pinion (4) for rotary engagement with the rack (6); a rotary input shaft (7) operatively connected to the gear train (1-4) to effect a linear relative movement between the rack (6) and the pinion (4); and an intermediate shaft (8) on which the first (1) and the second (2) gear wheel are fixed; the third gear wheel (3) being fixed on the input shaft (7), the fourth gear wheel (4) being journalled to enable it to rotate freely on the input shaft (7) and constituting the pinion (4), and the first gear wheel (1) and the fourth gear wheel (4) being in constant meshing engagement with each other.

The present invention is directed to a portable drill press apparatus for drilling a bore perfectly perpendicular to a surface. This apparatus includes a horizontal base plate having an enlarged aperture and a horizontal adjustment plate having an adjustment plate aperture. The adjustment plate is parallel to and releasably connected to the base plate by a plurality of releasable fasteners extending through a plurality of adjustment slots in the adjustment plate. A plurality of guide bolts extends vertically from the adjustment plate through a horizontal guide plate, the guide plate being parallel to the adjustment plate and slidable along the plurality of guide bolts. The guide plate has a guide plate aperture. A vertical back plate interconnects the guide plate and at least one drill clamp, the guide plate and drill clamp extending parallel to each other. The drill clamp has a variably-sized drill aperture for clamping a portable drill.

The present invention is directed to a portable drill press apparatus for drilling a bore perfectly perpendicular to a surface. This apparatus includes a horizontal base plate having an enlarged aperture and a horizontal adjustment plate having an adjustment plate aperture. The adjustment plate is parallel to and releasably connected to the base plate by a plurality of releasable fasteners extending through a plurality of adjustment slots in the adjustment plate. A plurality of guide bolts extends vertically from the adjustment plate through a horizontal guide plate, the guide plate being parallel to the adjustment plate and slidable along the plurality of guide bolts. The guide plate has a guide plate aperture. A vertical back plate interconnects the guide plate and at least one drill clamp, the guide plate and drill clamp extending parallel to each other. The drill clamp has a variably-sized drill aperture for clamping a portable drill.

An apparatus for clamping a robotically controlled tool to a workpiece comprises a tool support mountable on a robotic arm and configured to support the tool, a plurality of clamping modules, each of which includes at least one vacuum cup arranged to clamp the tool support to the workpiece, and an adjustment mechanism configured to adjust the position of the tool support relative to the workpiece.

An apparatus (100) for cutting workpieces comprises a clamping mechanism (2) adapted to be fastened to said workpiece (1) rotatably therearound. The clamping mechanism (2) comprises a frame element (5) and first and second arms (6, 7) extending therefrom. The arms (6, 7) are coupled at one end to the frame element (5) of the clamping mechanism (2) and each arm (6, 7) has its free end fitted with a contacting member (15, 16, 31, 32) configured to contact the surface of the workpiece. The apparatus comprises also two movable guiding members (28, 29) to which said arms (6, 7) are coupled so that when said guiding members (28, 29) are moved away from each other, the contacting member (15, 16, 31, 32) of the arms (6, 7) are configured to be moved away from each other and vice versa. The apparatus comprises also at least two supporting bars (50, 51) elongated through said guiding members (28, 29). The first supporting bar (50) comprises a first threaded portion (52) with a first coupling means (21), and the second supporting bar (51) comprising a second threaded portion (53) with a second coupling means (22). The first arm (6) and the first coupling means (21) are functionally coupled to each other by a first suspension arm (24), and the second arm (7) and the second coupling means (22) are functionally coupled to each other by a second suspension arm (25). The supporting bars are configured to be rotated at the same time.

A pneumatic mechanism includes: a casing having a main body and a base seat; a drive mechanism disposed in the main body; a first air bypass disposed in the main body, a rear end of the first air bypass communicating with the drive mechanism; a second air bypass having a rear end positioned on the base seat; at least one airflow passage disposed on the base seat, one end of which communicating with the second air bypass; at least one sucker disposed on the base seat; and at least one air-sucking passage disposed between the base seat and the sucker. One end of the air-sucking passage communicates with the air chamber of the sucker, the other end communicates with the airflow passage. The pneumatic mechanism is powered by one single power source to operate and produce sucking force.

A targeting tool releasably holds a portable drill press on a work piece while drilling a hole in the work piece. The portable drill press includes a tubular column with an open bottom end and a mechanical advantage device. The mechanical advantage device moves a drill up and down along the tubular column. A targeting base includes a base for releasable engagement with the work piece, an upstanding post affixed to the base that is adapted for engagement with the open end of the tubular column, and optionally, a drill guide in the base through which a drill bit passes as the drill moves up and down along the tubular column.

A hole saw drill guide is described. The drill guide can be used when drilling holes in pipe or tubes. The hole saw drill guide includes a guide tube base assembly and an arbor shaft assembly. The guide tube base assembly is chained or otherwise secured to a pipe. The arbor shaft assembly is removably engaged with the guide tube base assembly and during use of the device, rotates within a guide tube of the base.

A power tool stand for a removeable power tool has a first battery interface and a removeable battery having a first tool interface. The power tool stand comprises a base and a projecting frame connected to the base. A power tool carriage is moveably mounted on the projecting frame and the power tool carriage comprising a second battery interface and a second tool interface. The second battery interface is compatible with the first tool interface and the second battery interface is arranged to electrically and mechanically connect together with first tool interface. The second tool interface is compatible with the first battery interface and the second tool interface is arranged to electrically and mechanically connect together with first battery interface. The first battery interface and the first tool interface are incompatible.

A power tool stand includes a base and a projecting frame connected to the base. The power tool stand also comprises a power tool carriage moveably mounted on the projecting frame. The power tool stand further comprises a tool interface mounted on the power tool carriage arranged to secure a removeable power tool. The power tool carriage comprises at least one duct having a duct inlet in fluid communication with a duct outlet.