Abstract: A drill for forming bores in constructional components and including a tubular stem (2; 22; 32; 42) having an axially extending through-channel (3; 23; 33; 43) which opens into at least one suction opening (7; 11; 27; 37; 47), a shank (5) provided at a rear end of the stem for connecting the drill to a drilling tool (M), and a drilling head (8; 28; 38; 48) having lips (9; 29; 39; 49) and formed entirely of a cutting material and substantially butt-joined to the stem (2; 22; 32; 42) at a free front end of the stem (2; 22; 32; 42), with at least one suction opening being formed by a mouth opening of a front channel (12; 26; 36; 46) which is limited, at least partially by a material of the drilling head (8; 28; 38; 48) and a mouth surface of which, at least partially is arranged in a circumferential region of at least one of the stem (2; 22; 32; 42) and the drilling head (8; 28; 38; 48).

Abstract: In a machine tool having a workpiece support table and a tool head assembly provided with a tool engageable in a cutting relation with a workpiece positioned on the table for removing particulate material from the workpiece, a system for monitoring the cutting operation of the tool includes a support assembly, a camera for producing video signals representative of the cutting operation of the tool, the camera being mounted on the support assembly such that its focus is on said tool and a cut made thereby, and a machine controller coupled to the machine tool for controlling its operation. The machine controller includes a video monitor connected to the camera for receiving and displaying the video signals representative of the cutting operation of the tool while simultaneously displaying program information.

Abstract: A dust collector assembly is provided for use with a hand-held drilling device, or drilling holes in a ceiling to prevent the dust and other debris from falling onto the user of the drilling device. The assembly includes a rounded oblong body shell defining a chamber open on one side. The shell wall has an edge extending therealong, on the one side, that is placed against the ceiling into which holes are to be drilled. The body shell includes a drill hole therein that enables the drilling device to be inserted therethrough into the chamber. A hose connector, received in an opening at the opposite end of the body shell, is adapted to be connected to a suction hose. One of a plurality of drill hole adaptors is received in the drill hole in the body shell. The adaptors have central apertures of different diameters.

Abstract: A housing having a cylindrical upper portion for attachment to the quill of a vertical milling machine. The lower portion of the housing includes two concentric cones of funnel shape extending downward from the upper portion having a funnel opening at the bottom for passage of a cutting tool, and for use as a vacuum port for extraction of waste coolant and chips. The space between the two cones provides passage of air and coolant which is ejected at the bottom of the cones and directed to the cutting tool and work piece. The angle of air ejection depends on the angle of the cone. The housing upper portion has an air input connector for supplying the air to the space between the two concentric cones, and contains channels for directing coolant from a coolant input connection to a plurality of fluid lines configured between the cones to carry the fluid to the opening at the bottom of the cones for directing the coolant towards the cutting tool.

Abstract: A drill or machine tool attachment for use with a vacuum debris extraction system, comprising a bar to which a vacuum extraction nozzle is attached, and a tube slidably mounted on the bar and connected to a drill or machine tool. The nozzle is located on the bar ahead of the drill or machine tool, with the tube biased toward an extended position by at least one spring. The limit of the extended position is set by a locking plate. In use, as the apparatus is offered up to a workpiece to perform a drilling or machining operation, the nozzle makes initial contact with the surface of the workpiece and as the operator applies pressure to the assembly, the drill or machine tool and associated bit or tool moves slideably against the action of the spring thereby guiding the bit or tool through an aperture in the nozzle to contact the workpiece.

Abstract: A vacuum attachment device (10) contains a drill attachment portion (30) and a vacuum mounting portion (50). The drill attachment portion (30) is further composed of a longitudinally truncated cylinder section (32) and a lower funnel section (42). The cylinder section (32) has first and second snap-on arms (34) and (36) and a rear cylinder aperture (40). The lower funnel section (42) has a lower funnel connection aperture (44) which connects to the cylinder section (32) at the rear aperture (40). The vacuum mounting portion (50) contains a hose attachment section (52) and an upper funnel section (54). A vacuum mounting portion bonding surface (56) connects the vacuum mounting portion (50) to the drill attachment portion bonding surface (46) of the drill attachment portion (30).

Abstract: To enable a rotary cutter to correspond to an automatic tool exchange apparatus by adjusting, in a peripheral direction, the position of a positioning member in response to an outlet of a chip container and a key and a key seat for receiving the key of a rotary cutter and a machine tool. A chip container having an outlet is mounted on the peripheral area of a cutter body with a bearing therebetween. An arbor of the cutter body is connected to a machine tool such that a key fits into a key seat, and at the same time a positioning pin of the chip container is inserted into a fitting recess of a spindle head. A movable block ring having the positioning pin is mounted on the chip container after adjusting in a peripheral direction, and is fastened with a bolt. Even when a key of the machine tool and a fitting recess differ in a peripheral direction, they can be adjusted. The relative position in a peripheral direction between the outlet of the chip container and the positioning pin can be adjusted.

Abstract: An attachment for use with a vacuum powered debris removal system, said attachment comprising a debris collection bowl, said bowl having a first aperture through which a material cutting tool may be removably inserted, a second aperture through which a vacuum source may be connected, and a third aperture the open circumferential face of which is designed to lie substantially in contact with a material undergoing a cutting operation, such that in use, as debris is generated by the action of the cutting tool on said material, substantially all debris is collected in said bowl and thereby extracted through the second aperture by the action of the vacuum source.

Abstract: A pipe tapping device which includes a valve conduit having a longitudinal axis, a fluid inlet portion and a fluid outlet portion, wherein the fluid inlet portion has associated therewith, a cutting edge; mounting apparatus for mounting the valve conduit onto a pipe to be tapped; and compression apparatus for bringing the cutting edge into compressive contact with an outer surface of the pipe prior to tapping of the pipe; wherein the valve conduit is selectably rotatable about the longitudinal axis, such that upon bringing the cutting edge into the compressive contact with an outer surface of the pipe, rotation of the valve conduit is operative to transfer a turning force to the cutting edge so as to cause the cutting edge to cut a preselected portion of the pipe wall, thereby to form a coupon.

Abstract: An apparatus for directing chips emanating from a workpiece being machined by a tool toward an outlet spaced from the workpiece. The apparatus comprises an enclosure surrounding the workpiece and tool for confining chips emanating from the workpiece to the enclosure for removal via an outlet. The enclosure includes spaced-apart first and second wall portions, a top portion, a bottom portion, a first end portion comprising separate tool and workpiece openings, a second end portion and the outlet located proximate the intersection of the bottom portion and the second end portion whereby a majority of chips emanating from the workpiece are projected toward and collide with the second end portion after which the majority of chips fall to the bottom portion and/or the outlet. Alternatively and preferably, the enclosure comprises a curved inner surface and the chips are directed toward and then travel along the inner surface into an outlet.

Abstract: An air-suction chip removing device for use in continuously removing chips produced by a cutting tool such as a drill when a work is processed by a machine tool to another place without inflicting any damage onto the work. This device is characterized in that a surrounding body (8) is provided around the proximal end of a cutting tool (7) mounted on a spindle (1), that a tubular member (14) adapted to surround the cutting tool (7) in such a manner as to be freely withdrawn, that this tubular member (14) is formed into a shape in which an opening (p) formed in the distal end of the cutting tool (7) is narrowed toward the center of the cutting tool (7) and is biassed toward the distal end of the cutting tool (7) by means of a spring (17), and that a suction pipe (9) is connected to the surrounding body (8) for sucking air from the inside of the tubular member (14).

Abstract: An evacuated enclosure is provided around a circular cutter to collect the cutting dust produced while forming inspection apertures in insulation cladding. The enclosure includes an upper and lower coaxial chamber, the upper chamber provided with an air pump geared to a rotary shaft from a hand tool that also extends into the lower chamber. The hole cutter at the end of the shaft is then advanced through the insulation cladding by the advancement of the shaft through the cover, and the withdrawal stroke removes the cut pluc from the hale cutter while a spray of fixative is released into the enclosure. This fixative coats the loose strands on the plug exterior and also collects on the filter elements, to fix hazardous dust like asbestos from dispersal. The assembly may be combined with a portable power unit which may also include a vacuum device to augment the air draw across the filter.

Abstract: A drill vacuum combination is provided including a drill having an inverted L-shaped configuration with a vertical handle including a trigger for generating an activation signal upon the depression thereof. The drill further has a horizontal upper extent with a rotating adjustable drill chuck rotatably mounted to a front face thereof and adapted to releasably receive a drill bit therein. The drill chuck is adapted to rotate during the receipt of the activation signal. A tube is situated in concentric relationship with the drill chuck. A vacuum assembly is mounted on the drill and in communication with the tube for generating a vacuum upon the receipt of the activation signal.

Abstract: A device for removing debris from a cup of a hole saw having a resilient wire bent so as to have an arc-like configuration with a gripping area formed thereon. The resilient wire has a first end extending inwardly and upwardly toward the gripping area. The resilient wire has a second end extending inwardly and upwardly toward the gripping area. The second end is at an opposite end of the resilient wire from the first end. The first end is angled outwardly from a side of a plane of the resilient wire. The second end is angled outwardly from an opposite side of the plane of the resilient wire. Each of the first and second ends has a rounded end point. The first and second ends extend upwardly from a bottom of the resilient wire at an angle of less than 90 degrees.

Abstract: When a spindle unit 1 rises to a tool change position P1 of a printed-circuit board drilling apparatus, a pair of cam followers 27, which have been spaced downward from a pair of operating pins 38, are brought into engagement with conical portions 39 of the operating pins 38 and caused to move toward each other. As a result, a pair of opening/closing arms 24 that are provided under a pressure foot 20 and that serve as suppressing members for preventing floating of the printed-circuit board are moved away from their suppressing positions A in which the opening/closing arms 24 are kept closed by the force of a spring 28, to their retracted positions B. Consequently, forward end portions of the opening/closing arms 24 are positioned outside a tool passage zone S through which a tool post passes when a tool is changed.

Abstract: An improved drilling device for drilling normal holes in a workpiece surface is carried and positioned by an automatic control arm. The improved drilling device includes a compliant drill head generally comprising a drill housing and a pressure foot. The pressure foot for contacting the workpiece surface is connected to the drill housing at a universally swiveling joint. The drill housing encloses a drill drive means that advances and rotates a drill tool about a drill axis. Both the pressure foot and the drill housing have axial chambers and holes for permitting the drill tool to advance to the workpiece surface. Linear gauges mounted to the drill housing probe the orientation of the pressure foot relative to the drill housing.

Abstract: A suction grip for holding a pneumatic power tool to the surface of sheet material for drilling and counterboring holes contains a plate and a releasibly fastened cylindrical member. The plate contains a shallow region on a front face that abuts the work surface and serves as a vacuum region. The cylindrical member contains a hollow passage that receives, alternately, an alignment tool to center that passage over a locator hole in the worked material and to support a self collating pneumatic drill for drilling the worked material. A collection of collars which may be interchanged on the plate serves as a kit, permitting use with different drills.

Abstract: A remotely operated drilling tool is configured to produce holes in a core shroud support plate inside of a nuclear reactor vessel. The tool includes a support base that is securely mounted directly above the location where the hole will be formed. In a first operation, a drilling tool is secured to the support base and drills a hole through about 90% of the shroud support plate. The drilling tool includes chip capturing structure to prevent chip created by the machining process from contaminating the water in the reactor vessel. After about 90% of the hole is drilled with the drilling tool, an EDM tool is secured to the support base to machine the remainder of the hole using an EDM process. The EDM tool includes structure for machining the remainder of the hole, removing the slug from the hole, and performing a spotface on the underside of the shroud support plate.

Abstract: A head trimmer machine for cutting off excess material from a cylindrical portion of a blow molded bottle includes a fixture, a spindle rotatably mounted in the fixture, a cutting head attached to the spindle for rotation therewith, a cutter mounted to the cutting head, and a vacuum source for collecting the trimmed material by suction. The cutting head has a central passage so that it can fit down over the head of the blow molded bottle. The cutter is supported in the cutting head for movement between retracted and extended positions. In the extended position, the cutter extends into the central passage of the cutting head to cut the head or other excess material from the neck of the bottle as the cutting head turns. The spindle includes a central passage aligned with the central passage of the cutting head and the excess material is removed by being drawn through these passages by a gaseous flow created by the vacuum source.

Abstract: A chip adhesion preventing device is capable of preventing chips from adhering to the drill shank of a drill held on a spindle (1) included in a boring machine. Fluid passages (17, 23) are formed in the spindle (1) and a work holding member (19), respectively, and nozzle holes (18 and 22) are formed in the spindle (1) and the work holding member (19) so as to be connected to the outlet ends of the fluid passages (17 and 23), respectively, and to be directed toward the shank (13) of the drill (3). A high-pressure fluid is jetted through the nozzle holes (18, 22) toward the drill shank (13) to blow off chips (15) adhering to the drill shank (13).

Abstract: An attachment for a rotating tool bit provides air flow in the vicinity of the work area without the need for separate vacuum or compressed air supplies. The device is mounted on the shaft of the rotating tool bit and provided with a plurality of vanes which direct airflow through a cylindrical housing towards or away from the work area. A central aperture provides resilient mounting of the attachment to the tool bit. The attachment is capable of providing suction as well as forced-air to the work area. A number of embodiments are disclosed for directing the exhausted air in different directions, depending on the application of the tool and operator orientation. A filter may be incorporated into the attachment in order to collect dust and debris carried away from the work area by the air flow.

Abstract: The present invention relates to a cutting device for making holes, in particular holes in walls of hollow bodies made of plastic material, comprising a mount to which a cutting tool for cutting out a hole is secured, the mount being rotatably driven and performing an axial feeding motion, and an engaging member penetrating a disk which becomes separated in cutting the hole, the engaging member centrically penetrating the disk with respect to the periphery of the hole and withdrawing the separated disk which is then removed from the engaging member. The engaging member is axially displaceable and rotatably driven independent of the cutting tool and includes a self-cutting threaded profile turned into the disk before starting the cutting operation of the cutting tool and engaging the disk by forming a thread by means of the self-cutting thread of the engaging member.

Abstract: A dust extraction housing for a rotary drill has a rear collar 10 which attaches to a stationary boss 14 of the drill and a concertina tube 18 extending forward to enclose the drill bit 22. A forward end piece 24 of the housing has an outlet 26 for attachment of a vacuum source and an air inlet 34 fitted with a removable filter 36.

Abstract: The invention is a method and apparatus for embedding an implant of a special design in bone tissue in a way that encourages bone tissue growth in and around the implant thereby achieving greater attachment security over longer periods of time. The user employs a bone-fragment collecting drill to form the bone-tissue hole and deliver the resulting bone fragments to a collecting region. The user crumbles the bone fragments by placing them in the lower of two mating spoon-shaped jaws of a pliers-like device and repeatedly opening and closing the jaws until the bone fragments are crumbled. The surface of the implant is equipped with screw threads, one or more embedded helical channels, and through-holes to permit bone growth into the implant. The installation of the implant consists of partially filling the bone-tissue hole with bone crumbs, packing the helical channels and through-holes with bone crumbs, and screwing the implant into the bone-tissue hole.

Abstract: A boring apparatus which includes a rotatable cutting head used to cut a hole in a workpiece. The cutting head is mounted on an axially movable support, and is rotatable about and reciprocally movable along the axis between a forward cutting position, to engage and cut the workpiece, and a rearward position spaced from the workpiece. Cutting is performed by a cutting blade which is spaced radially from the axis, and which is movable relative to the rest of the cutting head by a blade advance mechanism. During cutting operation, the blade advance mechanisms move cutting blade both forwardly and radially inwardly through the workpiece wall, in the same direction at which the blade is inclined. The hole is thus formed by lowering the cutting head and then rotating the cutting blade as the blade advance mechanism moves the blade at an angle through the workpiece.

Abstract: A swarf boot comprises a flexible and elastic, generally frusta-conical, unitary member for capturing swarf, cuttings, dust and debris from drilling operations. The boot has two open ends, namely a proximal end adapted to receive and hold a drill body, and a distal end adapted to engage a surface to be drilled. In between the two ends, the swarf booth comprises a generally frusta-conical, corrugated body. The drill chuck is received within the interior of the boot. The inside dimension of the boot is substantially larger than the outside diameter of the chuck. Thereby, the boot surrounds but does not come in contact with the drill chuck, allowing the chuck rotate freely while the boot of the invention remains stationary. Optionally, the boot may include a outlet conduit for attachment to a vacuum to remove swarf during drilling operations. The boot may also include a handle on the distal end of the boot.

Abstract: A controlled atmosphere machining process which involves a work station for machining a workpiece with an inert gas in an enclosed environment which will not support combustion. The process further includes a vacuum system which removes particulate matter occurring during the machining process and transports the matter to a collecting tank. The inert fluid is recycled through a filter and cooling system and continues to be drawn by the vacuum system into the enclosed machining area of each work station.

Abstract: In a machine tool having a workpiece support table and a tool head assembly provided with a tool engageable in cutting relation with a workpiece positioned on the table for removing particulate material from said workpiece, a device for removing the particulate material from the vicinity of the tool and workpiece comprising a hood member mountable on the tool head assembly, about the tool, having a lower edge spaced from the workpiece when the device is in an operative position, providing a peripheral air inlet opening communicating with a cylindrical chamber, the hood member having at least one outlet opening for receiving air drawn through the air inlet opening and swirled in the cylindrical chamber by the high speed rotation of the tool, causing the entrainment of the particulate material produced by the cutting action of the tool.

Abstract: A drill bit assembly has a housing having a central passageway including a pressure chamber and a vacuum chamber. The pressure chamber is connectable with a pressure source and the vacuum chamber is connectable with a vacuum source. The pressure chamber and vacuum chamber are in fluid communication with each other. A bearing assembly has an outer race rigidly mounted within the pressure chamber and an inner race for frictionally engaging the drill bit. A bracket mounts the housing with the drill bit extending through the central passageway. A seal is formed between the pressure chamber and the vacuum chamber as fluid, such as air, from the pressure source flows into the pressure chamber to the vacuum chamber for exhausting to the vacuum source.

Abstract: A chip breaker drill bushing assembly (11) for a fluted drill bit (37) is disclosed. The assembly comprises a drill bushing housing (13) and a sleeve (15). The drill busing housing (13) includes a body (17) and an outwardly protruding guide shaft (19). The guide shaft has a smooth end (31) for tightly contacting the surface of a work piece (63) to be drilled. The sleeve (15) is located in the body (17) of the housing (13), in alignment with the guide shaft. The end of the sleeve (15) facing the tip (29) of the guide shaft (19) includes a chip breaker (41). The chip breaker (41) includes two spaced-apart teeth (46a, 46b) that are defined by two helical troughs (47a, 47b) that protrude into the sleeve (15). The two helical troughs (47a, 47b) are aligned with two longitudinal apertures (33) in the outwardly protruding guide shaft (19).

Abstract: A tube cutter tool is insertable into a tube for cutting a coupon from a damaged site on the exterior of the tube. Prior to using the tool, the damaged site is first located from the interior of the tube using a multi-coil pancake eddy current test probe. The damaged site is then marked. A fiber optic probe is used to monitor the subsequent cutting procedure which is performed using a hole saw mounted on the tube cutter tool. Prior to completion of the cutting procedure, a drill in the center of the hole saw is drilled into the coupon to hold it in place.

Abstract: A rotary cutting tool is disclosed having an evacuation bore and generally radially extending passages to conduct away material being removed by the tool cutters. In one embodiment, intersecting cutters are disposed at the intersections of right and left hand flutes in the tool shank. In another embodiment, the cutters are radially disposed on a cutting disc.

Abstract: A dust extractor (10) for use with a power drill comprises a housing (12) having two compartments (16) and (18) sealed from one another and a tube (26) extending from the opening (16) to an outlet (38). The tube (26) has a valve (28) having a recess (28A) enabling a flow of air to pass from the opening (16) to the outlet 38 whilst the vacuum is applied to the housing. Operation of the valve (28) enables waste material to be drawn from the working site and for suction to be released.

Abstract: A method of through-hole drilling of metal workpieces having sufficient ductility to create hinged drill caps, which comprises: while carrying out through-hole drilling with low thrust drill tips, directing a fluid jet stream against the drill exit side of the workpiece with sufficient force to retain and resulting drill cap closed against the exit side until such drill cap is completely annularly severed from the workpiece, the jet stream being oriented substantially coincident with the revolving axis of the drill. The fluid of the jet stream may be a machining liquid coolant, a gas, or a water-based solution. The jet stream has a diameter upon impingement with the workpiece that is less than the diameter of the exit opening created by the drill.

Abstract: Apparatus capable of performing wet and dry machining processes such as a hobbing machine for producing spur and helical gears, shafts, splines, and the like, by wet and dry hobbing methods. The apparatus comprises means to remove metal chips resulting from the wet and dry machining processes from the apparatus via respective independent wet and dry chip outlets. The chip removal means comprises a transfer means located in the machine base with the transfer means being reversible in direction in order to convey metal chips, emanating from the machining process, to the respective wet or dry chip outlet. The chip removal means enables metal chips from wet machining processes to be conveyed to and discharged from an outlet in one side surface and metal chips from dry machining processes to be conveyed to and discharged from an outlet in another side surface.

Abstract: A clamping device includes a housing, removably connected to a drill motor, which has a first end portion adapted to be received within an aperture defined in a drill plate. The first end portion of the housing also defines a number of openings in which respective ones of a plurality of ball bearings are disposed. The clamping device also includes means for forcing each ball bearing outwardly within a respective opening defined in the first end portion of the housing such that portions of the ball bearings are extended outwardly beyond the housing and are urged against the drill plate. Thus, the drill motor can be securely clamped to the drill plate. The clamping device can also include a mandrel defining an internal bore through which the cutting element extends. The mandrel typically has an exterior surface in which a plurality of recesses are defined. Each recess can be aligned with a respective opening defined in the housing and can be adapted to receive a respective ball bearing.

Abstract: A tapping fitting for a pipe, preferably a plastic pipe, includes a rotatable blade assembly threaded within a sleeve non-rotatably received within a housing such that rotation of the blade assembly causes it to cut a cylindrical slug from the pipe to which the housing is attached. The opposite faces of the sleeve are exposed to the fluid pressure within the pipe thereby producing a balance of forces substantially eliminating transverse creep. In addition, the attaching section of the fitting is formed with a bore which is engageable by a sealing ring received around the rotatable blade assembly and which is of sufficient length to accommodate any axial creep, thereby enabling the blade assembly also to serve as a valve.

Abstract: A drilling apparatus for penetrating material includes an elongated rotary tool for boring an aperture in a workpiece by turning about a longitudinal axis and for moving along the longitudinal axis relative to the workpiece during a cutting operation. The tool also includes a cutting head mounted on an end of an elongated, hollow shaft. A fluid circulation system brings a flowable substance temporarily into engagement with the workpiece during the cutting operation. The circulation system forces the flowable substance to flow in a passage defined by an external surface of the shaft and the workpiece toward the cutting head along an entire longitudinal length of the aperture being drilled. The flowable substance exits the aperture through the hollow shaft after flushing material from the cutting head.

Abstract: Within a hood, pressurized cold air is injected from a cold air injection pipe to the spindle and the cutting tool for a machine tool for cooling them and at the same time air is sucked and discharged through a discharge port provided on the hood from the inside of the hood by means of a vacuum pressure produced by a suction device. When air is discharged, a swirl is generated in the hood by discharged air and by deflected air streams passed through a plurality of guide blades provided at the open end of the hood. The cutting chips are floated up by the swirl and discharged together with air through the discharge port.

Abstract: Disclosed is a drilling apparatus intended to obtain an image of a drilling mark for detecting the center of the drilling mark, irrespective of the material of a work (transparent material or nontransparent material).

Abstract: A valve adapted for insertion in a pressurized fluid flow line for blocking and sealing the flow of fluid through the line without disconnecting the line and to maintain the pressure in the upstream end of the line. The valve includes two body portions which may be clamped on the fluid flow line to form a valve body in which is adjustably mounted an elongated tubular outer shaft, and an elongated cylindrical inner shaft that is rotatably mounted through the tubular outer shaft and carries an annular hole cutter and a tubular seal. The inner shaft is rotatable for driving the annular hole cutter through the line and the outer shaft is rotatable for advancing the inner shaft and annular hole cutter and for positioning the tubular seal in the hole cut through the line to block and seal flow through the downstream portion of the line.

Abstract: A device utilizing positive and negative fluid pressure and the plurality of tandem operating components for securely clamping a drill motor to a drill plate in order to drill precisely positioned holes in a workpiece includes an annular mandrel and annular collet concentrically disposed about the cutting tool. A first end of the collet includes a plurality of longitudinally extending fingers while the mandrel has a tapered end portion having a larger external diameter than the center cylindrical portion of the mandrel. A plurality of pistons are also coaxially disposed about the cutting tool and within piston subchambers defined within the piston housing of the clamping device to extend and retract the mandrel and the collet. Once extended, the longitudinally extending fingers of the collet overlie the center cylindrical portion of the mandrel. Thus, the clamping device may be inserted through an aperture defined in a drill plate.

Abstract: A drilling or chiseling tool includes a suction apparatus (8) releasably mounted on a housing (1) of the tool. The suction apparatus (8) contains a replaceable separating device (11) formed of a housing (13) subdivided into two separate chambers (K1, K2) by a filter element (14) replaceably fitted in the housing. Each chamber (K1, K2) has an aperture (12, 15) and the cross-sections of the apertures extend at right angles to one another.

Abstract: A drilling tool is adapted for incorporation into a riveting robot. For this purpose, the drilling tool with its spindle head is mounted on a slide that is motor driven for displacement in the Z-direction of an XYZ coordinate system. The slide in turn is mounted on a console provided with a flange to be secured or docked to the riveting robot. The console is rotatable about its longitudinal axis that extends perpendicularly to the drill spindle axis and intersects the latter approximately in the center of the spindle axis. The drill spindle is rotatably mounted in a spindle head and carries a drive wheel approximately in the center between the spindle ends. The drive wheel is meshing or cooperating with a power transmission train from a motor that is also secured to the slide and moves up and down with the slide and thus with the spindle head. Another motor drives the up and down movement of the spindle head. This type of arrangement permits positioning the drill bit in difficult locations.

Abstract: A method and apparatus for producing deep drill holes, particularly in wood and similarly structured materials, in which two drill elements, embodied as hollow shafts with cutting ends formed as cutting elements and concentrically disposed one within the other, are operated at different speeds, the cutting end of the interior drill element running behind the cutting end of the exterior drill element.

Abstract: A PCB working machine includes a work table for holding a PCB substrate in place with a suction force; a spindle carrying a cutting tool; a controller for moving the spindle in accordance with a predetermined pattern; a collet chuck provided at a distal end of the spindle for clamping the cutting tool; a floating head encircling said collet chuck at a distant position and having an end plate in which a plurality of air blowing holes are provided; and an adjuster for adjusting the positional relationship between the floating head and the cutting tool.

Abstract: A machine is disclosed for cutting a workpiece made of styrofoam or like material. The machine includes a frame having a generally planar base adapted to support the workpiece. A rotary cutter is supported above the workpiece and is rotatably driven about an axis perpendicular to the base of the frame. The rotary cutter is mounted to a carriage which is moveable on a slide in a first direction parallel to the base of the frame. The slide, in turn, is movably mounted to the frame in a second direction which is also parallel to the plane of the base but perpendicular to the first direction. The rotary cutter is also movably mounted to the carriage in a direction generally perpendicular to the plane of the base so that the cutter is moveable along all three or orthogonal axes. The cutter includes a plurality of radial bores which are fluidly connected with an axial bore in the cutter.

Abstract: A method and apparatus for automated loading and unloading of a cylinder in an engraver. The method and apparatus permit the engraver to accommodate cylinders of differing geometries, including a range of lengths, diameters and mounting configurations. The engraver includes a headstock and a tailstock which cooperate to rotatably support a cylinder at an engraving station in the engraver. The engraver includes a cylinder handling system having at least one cylinder supporting the cylinder between the headstock and the tailstock during the loading and unloading of the cylinder. The cylinder handling system includes a driver for driving the cylinder support towards and away from the engraving station until the headstock and the tailstock engage and rotatably support the cylinder. Once the cylinder is rotatably supported between the headstock and the tailstock, then the cylinder support is retracted.

Abstract: A method and a device for preventing a drilling chip from winding around a drill bit and for removing the drilling chip deposited in flutes of the drill bit comprising a drill bit acting as a driving member and a driven gear having at least one tooth engageable with flutes of the drill bit. As the drill bit is turned to drill a hole, the driven gear is actuated to turn such that the tooth of the driven gear engages the flute of the drill bit so as to scrape off any drilling chip deposited in the flute of the drill bit and to prevent the drilling chip from winding around the drill bit in action. The driven gear is rotatably and movably fastened to a support rod which is in turn fastened to a drill press.

Abstract: A dust guard fits onto the stationary housing of a portable electric drill with a resilient annular terminal portion. An elongate, axially compressible, elastic cylindrical body portion extends from the terminal portion, surrounding the drill bit and forming a chamber to receive debris and dust from the drilling process. The free end of the body portion is provided with a resilient, non-marring annular end piece for engaging the surface of the workpiece being drilled. As the drill bit penetrates the workpiece, the end piece is forced against the body portion, causing it to elastically shorten. The terminal portion 5 has external screw threads 9, and adapters with mating screw threads are provided. These adapters 6, 12, 13, 14 and 15 have progressively greater inside diameters for engaging drill housings having greater diameters than those that would fit the terminal portion 5.