Abstract: A method and apparatus for collecting dust and particles produced in machining a workpiece. The method and apparatus uses a shroud formed by a pair of frusta-conical walls spaced apart from each other to define an annular air passage therebetween. The shroud is mounted so that the machine tool extends through a central opening formed in the shroud. The annular air passage has an upper air inlet intersecting the air passage with a cylindrical component and a lower air outlet facing inwardly toward the machine tool. Pressurized air flows into the air passage and is thus directed from the air outlet toward the machine tool in a swirling manner. At the same time, a vacuum withdraws air from within the shroud to collect dust and chips produced by the machine tool.
Abstract: A position indicating mechanism for a milling machine or the like includes a position indicator having a rail and a position indicating scale slidably mounted thereto to provide a digital readout of the position of the scale along the length of the rail. A rail mounting bracket is adapted for mounting to the milling machine and for affixing the rail to the milling machine. A scale mounting plate is adapted for connection to the slidable scale, and also for interconnection with a movable collar of the milling machine which moves synchronously with movement of the work-performing component of the machine.
Abstract: The drive means (3) is arranged directly on the tool (2) and can be moved together therewith about a plurality of axes (A, B, C and D). The drive means is provided with a tool holding means for automatically delivering or receiving tools in a tool magazine (5) which is arranged above the region of operation of the tool (2). In that way a plurality of tools can be operated with a single drive means, wherein the tool guidance, workpiece forward feed and interchange of tools can be fully automated and programmed.
Abstract: To provide for an axially short self-tightening chuck, a spiral spring (22) is located inside the chuck to couple together a cylindrical surface (24) formed on the chuck spindle, for example on an extending flange (17) thereof and a cylindrical surface (25) on an axial extension (16) of a holding sleeve which retains the chucking mechanism, including clamping jaws (9) and the like. An operating ring (23) is engageable with an end portion of the spring. The spring has a direction of winding which, with a given direction of rotation of the tool, tightens the spring about the axially adjacent surfaces (24, 25) on the chuck body and the holding sleeve, so that they will rotate together, and, even under conditions of vibrations or sudden stopping, not loosen, since relative reverse rotation is inhibited by frictional engagement of the spiral spring between the parts.
November 8, 1988
Date of Patent:
February 20, 1990
Joseph Albrecht, Bohrfutterfabrik GmbH & Co.
Abstract: A flexible machining system includes a four axis double end slant bed unit which can be operated as a single or double spindle chucker, a precision boring machine, a way-type machine, a lathe or an automatic bar feeder. By providing the unit with a fifth axis, it may also function as a jig milling machine.
Abstract: A combination of a cutting tool (10) and a holder (14) defining a socket (13) for receiving a shank (12) of the cutting tool, wherein the shank includes a slot (17) extending transversely to its longitudinal axis, an elongate locking bar (20) mounted in the slot and projecting therefrom, and resilient means (19) biassing the bar into its projecting position and wherein the holder includes an elongate abutment member 21 releasably connected thereto and co-operable with the locking bar to retain the shank within the socket.
Abstract: A bale of fibrous material bundled by metal hoops is pressed against an elongated guide, with at least one sensor disposed at the guide for producing signals in response to the presence of metal, a parting device adapted to sever a hoop being displaceable along the guide, and a control system operatively connected to the parting device and receiving signals from the sensor and in response to analyses of the signals, positioning and triggering the parting device to sever a hoop.
Abstract: In a method of drilling a printed circuit board according to the present invention, an entry feed rate at which a drill is fed into the printed circuit boards during the initial stage of drilling is made slightly smaller than a drilling feed rate at which the drill is fed while it is drilling a hole through the printed circuit boards, so as to enhance the accuracy at which holes are located. One drilling operation includes a plurality of drilling feeds of the drill, and pulled-out positions of the drill which are reached by the drill between adjacent drilling feed rate are set within a range in which the pressure of a pressure foot is effective. This can prevent the stacked printed circuit boards from shifting and increase the accuracy at which the holes are located.
Abstract: A guide device for a deep drilling tool of a deep drilling machine including at least one guide jaw having a guide surface for guiding the elongated shaft of the drilling tool. The guide jaw has an outer surface which extends in a circumferential direction. The outer surface has a groove defined by a semicircularly shaped surface. The groove extends along at least a part of the circumferential extent of the outer surface. The semicircularly shaped surface has a diameter which varies along the circumferential extent of the outer surface. The surface so configured serves as the guide surface.
Abstract: In a transfer machine of the type that workpieces are transferred to a plurality of machining stations one after another by reciprocatively moving a horizontally extending transfer bar in a vertical direction and a longitudinal direction thereof, a plurality of transfer turn tables for holding the workpieces are arranged on the transfer bar in a serial fashion and are rotatably carried thereon each for rotatable about a vertical axis. A guided member bodily rotatable with each of the turn tables is formed with a guided groove, which is maintained engaged with a fixed guiding rail during the axial feed movement of the transfer bar, but is engaged with a turn drive claw only at at least one machining station where the angular position of the turn table has to be changed.
Abstract: Apparatus (10) for centering an integrated circuit device (12) along X and Y axes (95, 97) with respect to a Z axis (39). First and second jaw pairs (98, 100), are actuated so that corresponding jaws of each pair are, at all times, disposed along their respective axis at equal distances from the Z axis (39). Corresponding jaws of each pair (98, 100) are, concurrently, moved toward and away from the Z axis, therefore. In a preferred embodiment, actuation is effected by means of linear extender rods, (70, 72) which, in turn, in effect rotation of discs (26, 28) and their corresponding turnstiles (106, 114). Turnstile (106, 114) rotation, in turn, effects linear movement of track riders (84, 86) to which the jaw pairs, (98, 100) are mounted.
Abstract: A fluid inducer for mounting to an oil-hole drill sleeve includes at least two removable sections for easy replacement of internal O-rings without the need for removal of the drill sleeve or drill bit from the drilling machine. The inducer includes a cylindrical main inducer body having an inner bore around which are horizontally disposed at least two space O-rings that define an annular space about a lower position of the drill sleeve. A cylindrical bearing body is removably connected to the inducer body and includes an inner bore for retaining at least one annular bearing assembly that is mounted to the drill sleeve.
Abstract: An apparatus is provided for removing scale from a hot rolled steel strip by rolls acting by grinding and/or milling so that these rolls are uniformly effective in all regions of the steel strip and an appropriate uniform removal of the scale layer occurs. This is attained when driven grinding rolls adjustable toward the surfaces of the steel strip are provided of which at least two opposing rolls are axially slidable in opposite directions and have inversely oriented S-shape contours. These contours complement each other completely flawlessly in one definite position of the grinding rolls. In one such position the rolls provide a uniform engagement on both sides of a steel strip with a nearly rectangular profile.
Abstract: A lathe chuck includes three jaws each comprising a reciprocating jaw member to which an indexible, hexagonal, soft metal clamping member is detachably secured. Each jaw member has a raised portion which engages in a recess in the underside of the clamping member. Each jaw member also has an upright pin located at a leading edge of the jaw member, which engages in one of six slots formed in the peripheral surfaces of the recess and each aligned with a respective corner of the clamping member, thereby providing correct indexing of the clamping member.In another embodiment of the invention, two oppositely-facing leading edges are provided, so that they can be used for clamping against the inner surface of a tube or the outer surface of a bar, respectively.
Abstract: A boring head for precision jig boring and characterized by a body with a transverse bore and carrier lapped therein to carry a boring bar eccentric to a turning axis and held erect by an adjustment, and a micrometer adjustment anchored by an anti-backlash adjustment and positionably engaging the carrier through an anti-backlash adjustment, there being a lock for the adjusted position of the carrier.
Abstract: A milling device for working, and particularly for trimming the edges, of sheet metal strips, sheet metal plates, and the like. The workpiece is movable in any desired shape or direction in relation to the working position between guide rollers. The milling device has a cutter head which can be turned by a motor. The rotational axis of the cutter head is located approximately parallel to the plane of the workpiece and approximately vertical to the direction of advancement of the device. The device is provided with at least one cutter element provided with a cutting edge inclined at an angle to the normal plane of the cutter head.
Abstract: A portable, in-situ, omni-directional orientable assembly for refurbishing a bore in a workpiece and including a cutting bar with various tool holding options, a main jig assembly for effecting azimuthal alignment, rotation and translation of the cutting bar and various journaling options, including non-journaled operation. The cutting bar is an elongate rigid bar which has multiple chambers for holding cutting tools in addition to a removeable, toroidal tool holding adjunct that is slidable on the cutting bar and lockable to the bar by the insertion of a key into mutual longitudinal keyways provided in the cutting bar and the toroidal tool holding adjunct. A main jig holding rotary drive means provides omni-directional alignment capability and adaptability for transferring the rotary motion, as well as translational motion, to the cutting bar. The cutting bar may or may not be journaled; but if journaling of the bar is desired, a portable pillow block assembly is provided.
Abstract: A boring device has a spindle moving mechanism which retards a tool spindle when the spindle rotates through a predetermined angle. The mechanism has coaxial first and second thrust rings. Thrust balls are disposed between the thrust rings in rolling contact therewith. A retaining element holds the thrust balls such that they keep constant circumferential spaces therebetween. The first thrust ring is fixed to the tool spindle and has recesses in the surface facing the second thrust ring. The second thrust ring is fixed to the casing of the boring device. As the first thrust ring is rotated by the tool spindle, the thrust balls are fitted in the respective recesses, whereby the tool retards by the amount equal to the depth of the recesses. Then, cutting edges of a cutter is separated from the face of a workpiece which is being cut, and a continuous chip is broken into pieces having a predetermined length and is removed from a hole being formed.
Abstract: A socket shell for a lamp socket includes a substantially cylindrical socket sleeve formed to cooperate with a socket cap of substantially dome-shaped configuration and having a circumferential lip that seats up against an upper edge of said socket sleeve. Lugs are formed on the outer circumference of said socket sleeve proximate a first end thereof to pass through slots formed in the inner wall of said circumferential lip and to cooperate with said lip to obtain a releasable securing means. A thrust washer is deployed against a shoulder proximate said circumferential lip to apply pressure to said first end of said socket sleeve when attached to said socket cap so as to solidly lock said sleeve and cap in an assembled condition. The cap and sleeve are each formed of brass with a wall thickness of approximately 5/64ths of an inch to thus provide a heavy-duty lamp socket shell and lamp socket.
Abstract: The present invention relates to a tool for metal cutting, said tool in working position preferably rotating around its longitudinal center axis, and that the tool comprises a cutting body (10;10a;10b;10c) and a shaft (12;12a;12b;12c), that supports the cutting body (10;10a;10b;10c).The aim of the invention is to solve the problem to design milling, drilling and turning tools of small dimensions having exchangeable cutting edges.The present invention is characterized in that the cutting body of the tool is designed as a uniform body comprising integrated cutting edges. By means of a locking screw (11; 11a;11b;11c) the cutting body (10;10a;10b;10c) is detachably fixed in the shaft (12;12a;12b;12c).