Abstract: An adapter assembly for connecting an end effector to an electromechanical surgical instrument includes first, second, and third drive assemblies configured for converting rotational motion into linear motion. Each of the second and third drive assemblies includes a jackscrew assembly for longitudinally advancing and retracting respective second and third drive members.

Abstract: A portable power drill includes a housing, a drilling implement carrying drive spindle, and a drive motor for rotating and axially feeding the drive spindle. The drive spindle is rotatively and axially displaceable relative to the housing and connected to the drive motor via angle gears, a feed mechanism and two bevel gears supported on the drive spindle. The drive motor is drivingly connected to the drive spindle via a belt drive transmission, a feed shaft, and an angle gear including an axially locked but rotative nut piece. The feed shaft is located in parallel with and coupled to the drive motor via a transmission and drivingly connected to said nut piece. The drive motor is an electric motor controlled and monitored by a programmable control unit.

Abstract: A bench slide drilling and tapping dual-purpose machine tool has a base, a column and a transverse arm sleeve. The transverse arm sleeve is sleeved around the column, which is vertically fixed on the base. A hydraulic cylinder body is arranged coaxially with the column is centered in the column. A bracket is connected to the upper end of the sleeve, and is connected to a telescopic rod of the hydraulic cylinder. A sliding track is connected to one side of the transverse arm sleeve. A sliding transverse arm is provided inside the sliding track. A main motor is provided on one end of the sliding transverse arm, and the other end of the sliding transverse arm is fixedly connected with a second transverse arm; a drilling driven shaft is arranged in the second transverse arm; the upper end of a main motor is connected with a main belt wheel.

Abstract: A bench slide drilling and tapping dual-purpose machine tool has a base, a column and a transverse arm sleeve. The transverse arm sleeve is sleeved around the column, which is vertically fixed on the base. A hydraulic cylinder body is arranged coaxially with the column is centered in the column. A bracket is connected to the upper end of the sleeve, and is connected to a telescopic rod of the hydraulic cylinder. A sliding track is connected to one side of the transverse arm sleeve. A sliding transverse arm is provided inside the sliding track. A main motor is provided on one end of the sliding transverse arm, and the other end of the sliding transverse arm is fixedly connected with a second transverse arm; a drilling driven shaft is arranged in the second transverse arm; the upper end of a main motor is connected with a main belt wheel.

Abstract: This invention is related to a rigid tapping feedback assembly that is adapted to being retrofit on a milling machine having a spindle with a spindle end extending beyond a bearing cap and an automated drive. In embodiments, the assembly comprising a housing, spindle-pulley adapter that is drivably engaged with the spindle end, pulley assembly, shaft assembly, housing cover plate, and rotary encoder. The housing mounts to the bearing cap and holds the shaft assembly in substantially parallel-spaced alignment with the spindle-pulley adapter. The pulley assembly mechanically links the spindle-pulley adapter and the shaft assembly, typically utilizing pulleys and a timing belt. The housing cover plate mounts to the housing enclosing the assembly components above and supporting the rotary encoder in substantial axial alignment with the shaft assembly. In operation, the rotary encoder senses spindle rotational speed spindle and provides feedback to the automated drive to control downward movement of the spindle.

Abstract: A portable power drill includes a housing, a drilling implement carrying drive spindle, and a drive motor for rotating and axially feeding the drive spindle. The drive spindle is rotatively and axially displaceable relative to the housing and connected to the drive motor via angle gears, a feed mechanism and two bevel gears supported on the drive spindle. The drive motor is drivingly connected to the drive spindle via a belt drive transmission, a feed shaft, and an angle gear including an axially locked but rotative nut piece. The feed shaft is located in parallel with and coupled to the drive motor via a transmission and drivingly connected to said nut piece. The drive motor is an electric motor controlled and monitored by a programmable control unit.

Abstract: A trans-axial cutting apparatus used for cutting an inner surface of an opening formed within an object and accessible from outside the object. The apparatus comprises an elongate portable frame. The frame supports a cutting member on the first side and a stabilizing member on the second side. The stabilizing member is adapted to secure the apparatus during operation of the cutting member. The apparatus may be used to cut a counter bore, a longitudinal slot or groove at a desired depth, a helical slot or groove at a desired depth, or a slot or groove at a desired depth and along a desired path within the opening. Additionally, the apparatus is adapted to make any of the preceding cuts in a tapered or stepped manner within the opening of the object.

Abstract: A speed-change device for a drill machine, wherein the drill machine includes a drive motor having a spindle, a cutter connective shaft and a shell member, the device comprises an active disc unit installed to the spindle and including a first wedged disc and a second wedged disc paired and coupled to the first wedged disc; a driven disc unit installed to the cutter connective shaft and including a first wedged disc and a second wedged disc paired and coupled to the first wedged disc; a belt wound around the active disc unit and the driven disc unit, with the active disc unit driving the driven disc unit to operate via the belt; and an driven operating unit installed to the shell member and including a driven element and a pressing element which is fixed to the shell member and includes a fulcrum, an operating portion and an adjusting portion.

Abstract: A drilling apparatus capable of having a minimal axial length to permit its use within limited confines. The drilling apparatus includes a housing with a housing bore and a first housing end, a spindle rotatably supported within the housing bore, bearing elements within the housing bore and surrounding the spindle to rotatably support the spindle within the housing, and a drive unit for rotating the spindle. The spindle is configured to secure a shank of a drill bit at a first end thereof exposed at the first housing end, and the drive unit is transversely offset from an axis of rotation of the spindle.

Abstract: An exchangeable spindle assembly for a machine tool. The spindle assembly includes an assembly attachment coupling being connectable to said machine tool, a tool spindle having a predetermined spindle diameter, and a spindle drive coupling being connectable with a drive mechanism of the machine tool. The drive coupling communicates with the tool spindle whereby rotation of the drive coupling effects rotation of the tool spindle. The spindle assembly further includes at least one coolant distribution manifold being connectable with a coolant supply source on the machine tool via a coolant connection on the spindle assembly. The spindle assembly being arranged in a manner whereby upon mounting the spindle assembly on the machine tool, the assembly attachment coupling, spindle drive coupling and coolant connection are all concurrently connectable to the machine tool. Additional connections may be included.

Abstract: A scroll sawing machine includes a first transmitting shaft driven by an output shaft of a motor, a second transmitting shaft rotatable to move a blade-driving member in an upright direction so as to enable a saw blade to perform reciprocating movement, and a speed ratio varying device disposed to couple the transmitting shafts. The device includes two pitch-variable first and second pulleys mounted on the transmitting shafts, a belt trained on the pulleys, and a control unit operable to move a movable disc of the first pulley toward or away from a fixed disc of the first pulley so as to vary the radial distances between the belt and each of the transmitting shafts, thereby varying the speed ratio of the second transmitting shaft to the first transmitting shaft.

Abstract: This invention relates to stepless speed change bench drill, comprising a pedestal, a vertical post mounted on the pedestal, a worktable and a cabinet mounted on the vertical post, a driving shaft and a main shaft mounted on the upper portion of the cabinet, a motor for transmitting power to the driving shaft, a motor movable wheel and a motor stationary wheel mounted on the driving shaft, and a main shaft movable wheel and a main shaft stationary wheel mounted on the main shaft, a speed regulation shaft provided with a threaded section and mounted between the driving shaft and the main shaft, the threaded section is engaged with a threaded hole formed on a bearing block, the bearing block is simultaneously mounted on the main shaft, the speed regulation shaft is rotated by a speed regulation hand wheel.

Abstract: This invention relates to stepless speed change bench drill, comprising a pedestal, a vertical post mounted on the pedestal, a worktable and a cabinet mounted on the vertical post, a driving shaft and a main shaft mounted on the upper portion of the cabinet, a motor for transmitting power to the driving shaft, a motor movable wheel and a motor stationary wheel mounted on the driving shaft, and a main shaft movable wheel and a main shaft stationary wheel mounted on the main shaft, a speed regulation shaft provided with a threaded section and mounted between the driving shaft and the main shaft, the threaded section is engaged with a threaded hole formed on a bearing block, the bearing block is simultaneously mounted on the main shaft, the speed regulation shaft is rotated by a speed regulation hand wheel.

Abstract: A spindle assembly, with improved belt drive, is suitable for a multi-axis machining cell providing tool movements along predetermined axes of motion, such as the X-, Y- and Z-axes. Plural machining spindles, each provided with a driven pulley, are mounted to a headstock of a machining cell. A spindle, drive motor is also mounted to the headstock and is provided with a drive pulley. A drive belt is trained, preferably by serpentine wrap, over the drive pulley and subsets of driven pulleys, and transmits rotational motion from the drive pulley to the driven pulleys. Preferably, at least one set of drive pulley and driven pulleys is constituted by herringbone sprockets.

Abstract: A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The apparatus includes a housing, a spindle unit in the housing for rotating the cutting tool and an orbital drive for rotating the spindle unit. An axial feed mechanism moves the orbital drive and the spindle unit jointly either toward or away from the object being machined.

Abstract: A speed adjusting device for a drill includes two pulley assemblies between which a belt is connected. Each pulley assembly has a fixed disk and a movable disk so that an effective diameter that the belt engages the pulley assembly can be changed by adjusting a distance between the disks. One of the pulley assembly driven by a motor shaft has a spring which is biased between the movable disk and a motor. A pressing member presses the movable disk of the other pulley assembly which is connected to an output shaft. A lifting device can be operated to adjust the pressing member to allow the spring to change the distance between the other pulley assembly so as to obtain different effective diameter in each pulley assembly.

Abstract: A structure for mounting a motor of a planing machine includes a hollow base, an axle casing fitted in said base and provided with a spindle for connecting with a planing cutter, a first pulley arranged under said spindle so that a belt connects said first pulley with a second pulley of a motor, wherein said axle casing is provided at a bottom with an extension having a circular hole and a curved groove subtending the center of the circular hole, a motor cover is installed on one end of a motor and has a pair of lugs in which is fitted an end of said extension, a pin is inserted into said lugs and said circular hole to form a pivot therebetween, and a locking handle is threadedly engaged with one of said lugs so that said motor is fastened on one side of said axle casing.

Abstract: A speed adjusting device for a drill press includes a first variable pulley mounted to the motor shaft and a second variable pulley mounted to the output shaft with a belt connected between the two variable pulleys. A pressing member is mounted to the second variable pulley and the first end of the pressing member is pivotally connected to a fixed member and the second end of the pressing member is connected to a control device. The control device has a connecting member connected to the second end of the pressing member so that the pressing member exerts a force to the second variable pulley by operating the control device to adjust the effective diameter of the belt in the first and the second variable pulley.

Abstract: An apparatus and method for limiting the transmission of power from a motor to a spindle of a positive feed drill when a high torque situation develops, as well as an apparatus and method for causing the spindle to automatically retract when the high torque situation develops.

Abstract: The present invention relates to the multi-splindle machining apparatus which carries out machining of the discontinuous surfaces of a plurality of workpieces simultaneously, and in order to restrain the amplification of chattering, oscillation or the like so as to prevent the machining precision from deterioration, the diameters of plural drive pulleys 7a, 7b, 7c connected to a driving motor are finely varied to change at random the rotational speeds which are transmitted from the drive pulleys 7a, 7b, 7c through belts 10 to driven pulleys 8 provided on each machining spindle 3a, thus changing irregularly the timings at which cutting edges 9 of the machining spindles 3a pass the discontinuities such as joint portions s.

Abstract: An apparatus for controlling a tapping-drilling machine is disclosed in which holes can be formed by means of drilling tools, and threads can be formed by means of tapping tools. A worm is elongately formed on a spindle, and a worm wheel which is meshed with the worm is secured by a lateral shaft. At the leading end of the lateral shaft, there is installed a brake. In the preferred embodiment of the present invention, the electronic type brake is employed, and the electric current flowing through this brake is adjusted, so that the velocity of the vertical movement of the spindle sleeve (which is defined to be the ratio of the vertical moving distance to the revolutions of the spindle) can be automatically adjusted.

Abstract: A working machine includes a base having a working table for supporting a work piece and having a tool disposed on top for moving downward to machine the work piece. A block is secured to the base and has another tool for being selectively rotated to machine the side portion of the work piece. The another tool may be selectively driven by a motor which may drive the tool for moving downward to machine the work piece. The block has a screw driven slide to engage with the track and includes two followers for allowing the block to be secured to different vertical tracks.

Abstract: A drill press assembly having a base mountable to a work bench, a vertical column attached to the base and a drill head assembly having an electric motor and a quill. The drill head assembly is movably attached to the column. A rack is rotatably attached to the top of the column and is engaged by a crank and pinion mechanism attached to the frame of the drill head assembly which permits the drill head assembly to be displaced vertically and rotated about the column. A tilt table is attachable to the base of the drill press. A locking mechanism having a bolt passing through a longitudinal slot in the supporting base of the tilt table and a transverse slot in the base is engaged by an eccentrically mounted camshaft to lock the supporting base of the tilt table to the top surface of the drill press base. A pivoting frame is pivotably attached to the supporting base and contains a table plate. A fence is attachable to the top of the pivoting frame.

Abstract: A speed change control mechanism including a motor for power output, a main shaft, a belt transmission mechanism driven by the motor to turn the main shaft, a gear box disposed at one side of the main shaft, the gear box comprising a gear shaft, a small gear slidably mounted around the gear shaft and stopped from rotary motion relative to the gear shaft, the small gear being moved into engagement with a big gear which is fixedly mounted around the main shaft, wherein a bearing means is fixedly secured to the small gear, a rack is fixedly mounted on the bearing means and meshed with a toothed shaft, the toothed shaft being rotated to move the small gear between the operative position, in which the small gear is engaged with the big gear of the main shaft for permitting the output power of the motor to be transmitted through the gear box to the main shaft for a low-speed milling operation, and the non-operative position, in which the small gear is disengaged from the big gear of the main shaft for permitting th

Abstract: A tool for the tapping of a bone hole and installation of an implant in dentistry has a knob manually rotatable externally of a patient's mouth on one end of an arm and a bit, releasably secured on a sprocket, rotatable inside the patient's mouth in response to rotation of the knob. A chain connects the bit sprocket to a sprocket attached to the knob, so that the bit rotates about an axis parallel to, but laterally offset by the arm from, the axis of rotation of the knob. For bone tapping purposes, a tapping bit is used and a "T"-shaped handle attaches to the knob to increase the lever arm for torque application. For screwing implant components together or into the tapped bone, a screwing bit is used. A resilient elastomer sleeve is releasably stretched over the implant component and over the screwing bit for initial positioning. Multiple, interchangeable bits are provided to match different-sized implant components.

Abstract: A tool head for moving a tool to a workpiece and applying an axial force thereto includes a grooved tubular spindle mounted on a fixed shaft for relative axial and rotational movement. The spindle is rotated by a timing belt transmitting power from a driver timing pulley. The timing belt is fitted around the timing pulley and grooved spindle with a pair of 90.degree. twists in the loaded and unloaded sections between the two pulleys. As power is applied to the timing pulley, the belt migrates toward the end of the pulley and the spindle closest to the unloaded section of the belt; and when a resistant torque is applied to the spindle the timing belt migrates to a stable position with respect to both the timing pulley and the grooved spindle and transmits torque and an axial force to the spindle.

Abstract: A top housing supported by a vertical post in a drilling machine is provided with a belt transmission mechanism incorporating a speed adjusting mechanism which can be operated easily and manually. The adjusting mechanism includes a knob connected to an adjusting rod which in turn is connected to a movable cone-shaped disk. The adjusting rod has a helical thread engaging with a projection of a fixed annular seat through which the adjusting rod passes. The adjusting rod is moved axially when rotated and moves the movable cone-shaped disk with respect to a fixed cone-shaped disk. A locking nut is threadedly sleeved around the annular seat to prevent the adjusting rod from rotation when the nut is tightened. The top housing is mounted movably on the vertical post and normally moved upward by a compression spring.

Abstract: An electric motor can drive a workpiece and a tool simultaneously at speeds in a ratio adjustable at will. The workpiece is driven via two pulleys and a belt, while the tool is driven via further pulleys and a belt from a hydraulic circuit comprising a pump coupled to the electric motor and a hydraulic motor. The pump is preferably of the variable-capacity type so that its flow can be modified independently of the speed of the electric motor.

Abstract: A high speed toolholder for driving a small high speed cutting tool from the large slow speed spindle of a machining center comprises a housing having a retention pin extending from side end thereof. An input shaft, dimensioned to be received in the machining center spindle, is rotatably journaled into the toolholder housing parallel to the retention pin. Rotatably journaled into the opposite side of the housing so as to be coaxial with the input shaft is an output shaft whose distal end has a tapered bore therein dimensioned to receive the shank of a high speed cutting tool. Within the housing, each of the input and output shaft carry a separate one of a pair of sheaves which are each lined by a V-belt to a separate one of a pair of sheave members on a step sheave rotatably journaled in the housing parallel to the input and output shaft.

Abstract: A power feed rotary tool, such as a drill or a tapper, has an electric motor for rotating the working head and a pneumatic system for advancing the working head. A control rod extends from one end of the tool housing, and is displaced together with the working head, but does not rotate. The control rod controls the feed stroke of the working head. The electric motor is connected to the tool housing between its ends.

Abstract: This invention relates to a retrofit system for automatically selecting and continuously controlling the rotational speed of a typical machine tool. A plurality of sensors are provided adjacent to the storage receptacles for each of the tools or tool holders. When a tool is removed from the storage location, a pre-set speed reference signal is generated responsive thereto for controlling the rotational speed of the machine tool. A rotational speed sensor may also be included for continuously correcting the rotational speed of the machine tool for speed variations due to loading, voltage variations, etc.

Abstract: A machining unit with a working spindle supported in a spindle housing and a saddle on which the spindle housing is removably secured and which is guided on a saddle carrier for sliding movement axially of the working spindle to cause the working spindle to be moved by feed motions, and with a drive motor secured to the saddle carrier and a transmission driven by the drive motor, the transmission having a hollow shaft in which the working spindle is guided for axial sliding movement and for rotation by the hollow shaft supported in a holder adjustable and lockable relative to the saddle carrier in two directions perpendicular to the axial direction of the working spindle.