Abstract: Device for making a hole in a workpiece, including a drilling tool, a supporting apparatus that is or can be assigned to the drilling tool and is configured for supporting the drilling tool on at least one supporting region, wherein the supporting apparatus includes an elongate main body that includes at least two main-body elements, at least one main-body element being mounted so as to be movable relative to at least one additional main-body element in order to change the length measurement of the main body.

Abstract: A drill jig apparatus configured to be coupled to a locomotive bedplate is presented. The apparatus can include a first member and a second member. The first member can be configured to attach a drill to provide stability while drilling, and the second member can be operably coupled to a locomotive, such as to an engine and bedplate of a locomotive. An engine dowel drilling system is also presented, which can include a drill jig member and a bushing member, and the members can be operably coupled with one another. A method of drilling holes in a locomotive bedplate can include using a drill jig and a bushing to facilitate drilling, and the drill jig can be a conductor-side jig or an engineer-side jig. A kit is also presented for engine dowel installation that can standardize dowels and dowel holes.

Abstract: The present disclosure belongs to the field of machining of chamfers of holes. The hole chamfering device includes blades in bilateral symmetry and a blade distance adjusting, through the blade distance adjusting, the distance between the blades on the left side and the right side can be adjusted, thus, after the blades on the left side and the right side of the hole chamfering device process chamfers on the front face of a hole, the distance between the blades is reduced to enable the blades to pass through the hole to process chamfers on the back face of the hole, after processing of the chamfers on the back face of the hole is completed, the distance between the blades is reduced, the hole chamfering device not only can chamfer the front face of the hole, but also can chamfer the back face of the hole.

Abstract: An adjustable hub adapter for coupling an on-car brake lathe to a wheel hub. An annular support frame coaxially carries an axially bored and threaded central mounting hub with a set of equidistantly spaced spokes. A lug bolt receiver is associated with each spoke, and consists of a receiving tube, a lever arm pivotally coupled to the spoke at a pivot bolt in proximity to the annular support frame. An engagement pin on each lever arm is captured within a synchronizing ring carried on the annular support frame. The rotational movement of any lug bolt receiver about an axis of the pivot bolt imparts rotational movement to the synchronizing ring, and in turn, causes each remaining bolt receiver to rotate about an associated pivot bolt axis, maintaining the lug bolt receivers in a synchronized and symmetric radial displacement from the central mounting hub.

Abstract: A hole saw includes a substantially cylindrical body defining a cutting end and an axis of rotation. The hole saw also includes first and second apertures formed through the body and spaced from the cutting end such that a portion of the body extends between the cutting end and both the first and second apertures. The first and second apertures are both configured to receive a tool for removing work piece plugs from within the cylindrical body. The first aperture is axially spaced from the cutting end a first distance. The second aperture is axially spaced from the cutting end a second distance that is greater than the first distance. The first aperture and the second aperture are separated by a portion of the body.

Abstract: A chuck includes a chuck surface, a plurality of vacuum ports being distributed over the chuck surface. Each of the vacuum ports is open to a conduit that is connectable to a suction source that is operable to apply suction to that vacuum port. A flow restrictor is located within each conduit and is characterized by a flow resistance. The flow resistance of the flow restrictor in at least one conduit is less than the flow resistance of the flow restrictor in at least one other conduit.

Abstract: A hydraulic expanding chuck for receiving and clamping a tool with a shank. The hydraulic expanding chuck has a main body, which on an axial side has a clamping section that extends along a longitudinal central axis of the expanding chuck and has a clamping part lying in a neck region and in which are formed a central receiving opening for receiving a tool shank and a chamber system to which a fluid pressure can be applied. The chamber system comprises at least one pressure chamber, which is separated from the receiving opening in the radial direction by an expansion wall yielding elastically under the fluid pressure, and which can be supplied with fluid pressure by means of at least one axial pressure channel running from a piston clamping mechanism accommodated in a clamping region of the hydraulic expanding chuck.

Abstract: A ceramic mixture paste includes oxide ceramic particles, burn-off particles, and a firing aid. The burn-off particles are burned off at a temperature lower than the firing temperature of the oxide ceramic particles. The firing aid melts at a temperature lower than the firing temperature. The ratio of the volume of the burn-off particles to the volume of the oxide ceramic particles is more than 0% and less than or equal to 20%.

Abstract: A reamer incudes a core and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material. The core extends from a front end to a rear end. The core is provided with a plurality of flutes from the front end to the rear end. A center-of-gravity adjustment portion, which adjusts a distance from a center of rotation to a center of gravity, is provided at least partially from terminal ends of the plurality of flutes on a rear end side to the rear end of the core. The center-of-gravity adjustment portion causes the deviation of the center of gravity from the center of rotation to be smaller than when no center-of-gravity adjustment portion is provided.

Abstract: Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120b.

Abstract: A quick coupling unit for bar loader clamps includes an end shaft that can be accommodated rotatably within a corresponding seat of a tubular body that is integral with the bar pusher of said loader and an element for stable coupling to the terminal stem of the respective clamp. The element includes a sleeve provided with a recess whose shape and dimensions are complementary to those of an insert which can be accommodated in said recess. The quick coupling unit also includes a locking ring having a variable inside diameter that surmounts said sleeve, the rotation of the ring to a first configuration defines clamping of the insert within the recess and locking of the stem, and to a second configuration defining radial freedom of the insert and free exit of the stem.

Abstract: A method of selectively transferring micro devices from a donor substrate to contact pads on a receiver substrate. Micro devices being attached to a donor substrate with a donor force. The donor substrate and receiver substrate are aligned and brought together so that selected micro devices meet corresponding contact pads. A receiver force is generated to hold selected micro devices to the contact pads on the receiver substrate. The donor force is weakened and the substrates are moved apart leaving selected micro devices on the receiver substrate. Several methods of generating the receiver force are disclosed, including adhesive, mechanical and electrostatic techniques.

Abstract: The present invention relates to a built-in type spindle, and more particularly, to a built-in type supersonic spindle, which includes a housing having a built-in spindle unit therein and a supersonic vibrator pressing the built-in spindle unit in order to enhance machining accuracy and reduce a damage of a bearing by vibrating a spindle and the bearing at the same time, and an excitation method using the built-in type supersonic spindle.

Abstract: The invention relates to a drill comprising a body which extends along a longitudinal axis (L) from a rear side (B) to a front side (F), wherein the body comprises a main cutting edge on the front side (F), wherein the body comprises at least one guide bevel which extends in axial direction (A) and toward the front side (F), wherein, toward the front side (F), the guide bevel has an end section which is tapered. The invention further relates to a method for producing such a drill.

Abstract: A hole cutting tool with plug ejection includes a hole saw having a first central bore and an arbor having a second central bore along a central axis. The arbor is configured at one end to be coupled to a rotational drilling machine, and at the other end to be attached to the hole saw in a first cutting position and detached from the hole saw in a second ejection position. The hole cutting tool also includes a pilot guide having an ejection shoulder. The pilot guide is slidably disposed within the second central bore of the arbor and received through the first central bore of the hole saw. The pilot guide being configured to translate along the central axis between a first drilling position and the second ejection position.

Abstract: A female screw portion 24 is formed over the entire length of a through hole 23 passing through an axis of an ultrasonic horn 13, first and second male screw portions 25, 26 formed on the ultrasonic horn 13 side of axes of first and second boosters 14, 15 are screwed into the female screw portion 24, the ultrasonic horn 13 and the first and second boosters 14, 15 are fastened coaxially, leading ends 27, 28 of the first and second male screw portions 25, 26 are not in contact with each other inside the through hole 23, and a cutting blade 12 is attached to an outer periphery of a base portion 20 of the ultrasonic horn 13 having a space portion 29 surrounded by an inner wall of the through hole 23 and the leading ends 27, 28 of the first and second male screw portions 25, 26.

Abstract: A rotary cutting tool includes a tool body including a chip flute portion having a plurality of helical chip flutes separated by lobes. In one aspect, a tunable vibration absorber assembly is disposed within a cavity formed in the chip flute portion. In another aspect, the tunable vibration absorber assembly is disposed within a cavity of a replaceable cutting head. In each aspect, the tunable vibration absorber assembly includes at least two tunable absorber masses, a resilient material between the one or more absorber masses and the cavity, and one or more connecting members for preventing relative angular displacement of the one or more tunable absorber masses. The at least two tunable absorber masses are suspended only by the resilient material, thereby enabling the tunable vibration absorber assembly to be tuned to a desired frequency for suppressing torsional vibration of the rotary cutting tool during a cutting operation.

Abstract: Power drive tools are described. The tools include one or more threading pawls, one or more release pawls, and a drive ring selectively positionable relative to the tool and engaged with the pawls to selectively extend or retract the pawls. Also described are tools that include one or more lights to illuminate a workpiece. Also described are tools having distally located shoulder regions at which force may readily be applied. In addition, gear train assemblies for use in the power drive tools are described.

Abstract: A laser alignment system is affixed to a drilling machine M, the laser alignment system contains: a base, two first fixers, two lamp holders, two second fixers, two first resilient elements, two first adjustable screws, two second resilient elements, and two second adjustable screws. The base includes two symmetrical holding sections, two extensions, and two peripheral orifices. Each first fixer has a first arcuate portion, an accommodation hole, a first threaded hole, a limitation hole, a first protrusion and a second protrusion. Each lamp holder includes a peripheral knob, a first receiving orifice, a first rotation portion, a second rotation portion, and a swing portion. Each second fixer includes a second arcuate portion, a second receiving orifice, a first projection and a second projection.

Abstract: An adjustable drill jig system for drilling holes in a workpiece includes a first T-shaped element having a stem and a crossbar; a first guide engaged with the stem, the first guide having a stop plate extending perpendicular to the stem; a double bracket having a first channel and a second channel, the first channel to engage with the crossbar; an extension ruler engaged with the second channel of the double bracket and extending away from the cross bar; and a second guide having a drill bushing; the second guide is to engage with the crossbar or the extension ruler for placement of the drill bushing; and the adjustable drill jib system allows for drilling one or more holes in the workpiece.