Abstract: An adjustable cartridge to be mounted in a boring bar, the cartridge including a anvil rotatably affixed to said boring bar, the anvil including a pocket into which a lay-down indexable insert is affixed. The anvil is secured in an axially oriented slot which includes an arcuate seating face. Rotation of the anvil within the slot effects radial adjustment of the insert.

Abstract: A rotary cutting tool including an elongated generally cylindrical holder having a recess into which is fitted a disposable cutting insert. The insert is held in place by a clamping member which bears against a surface of the insert and which is attached to the holder by a clamping screw. Radial adjustment of the insert can be effected by adjusting screws which have camming surfaces which bear against a corresponding camming surface of the insert. In axial cross section, the axis of each adjustment screw is parallel to the axis of the clamping screw and to a horizontal axis of the holder, and an axis of the insert is at an angle relative to a vertical axis of the holder.

Abstract: A boring tool is made from simple bar stock without significant external machining of the tool body. By providing a longitudinal bore which intersects a transverse slot, a longitudinally slidable wedge with splines can cooperate with a disc carried by a tool bar slidably received in the transverse slot. To ensure the most precise alignment between splines of the wedge and splines of a cooperating disc in the tool bar, the disc of the tool bar is attached to the tool bar with epoxy cement while the splines of the disc are engaged with the splines of the wedge. With the splines of the wedge being angularly offset from the longitudinal axis of the wedge, translation of the wedge will ensure accurately controlled movement of the tool bar.

Abstract: A cutting tool (10) of generally circular shape made by investment casting. Removable teeth (15) are secured in through-holes (14) in an annular support (13) and may be removed by removing locking nuts (18). The teeth (15) are angled transversely relative to the plane of the hub so that their respective cutting edges overlap to give a resultant cut wider than the annular support (14). The tool is particularly useful for grinding tree stumps or like and may be used on a stump grinder of the type described in U.S. Pat. No. 4,441,534.

Abstract: Adjustable cutting tool bit support, usable as in a stump cutter body, including adjustable jack for variable registration depth of cutting bit, a differential screw engaging differential threads in the body and jack for adjusting the jack position, a wedge clamp for locking engagement of the body and tool bit in adjusted position and a differential screw engaging differential threads in the respective wedge clamp and jack for positively moving said wedge clamp into an effective clamping engagement.

Abstract: A boring tool is made from simple bar stock without significant external machining of the tool body. By providing a longitudinal bore which intersects a transverse slot, a longitudinally slidable wedge with splines can cooperate with a disc carried by a tool bar slidably received in the transverse slot. To ensure the most precise alignment between splines of the wedge and splines of a cooperating disc in the tool bar, the disc of the tool bar is attached to the tool bar with epoxy cement while the splines of the disc are engaged with the splines of the wedge. With the splines of the wedge being angularly offset from the longitudinal axis of the wedge, translation of the wedge will ensure accurately controlled movement of the tool bar.

Abstract: A tool for metal-cutting comprises a holder (3) on which is mounted in its front part (3a) a cutting plate (6) and which is formed together with a base body (2) as an integral unit by being connected rigidly to the base body (2) in the region of its rear end (3b), a perforation (9) in the holder forming a parallel-type spring arrangement so that the holder is resiliently deflectable relative to a support (11) formed by the base body (2), and an adjustment device for deflecting the holder in use as desired.

Abstract: A blade clamping device for securing a blade assembly on a rotary cutting tool having a body formed with a cylindrical surface concentric with the axis of the cutting tool. The clamping device selectively locks the blade assembly in position along a radially disposed track which is defined by an elongated slot extending radially from the cutting tool body's outer diameter to its inner bore and a key-shaped channel formed inwardly of the elongated slot's bottom wall. A ball head screw is slidingly retained in the key-shaped channel such that its threaded shank is held in threaded engagement with a threaded aperture formed in the blade assembly in order to provide a means to selectively clamp the blade assembly in position along the elongated slot.

Abstract: A boring head having a diametrical bore adjacent the working end thereof for insertion and removal of two or more interchangeable cutter holders. The cutter holders are restrained against rotational movement within the bore but not axial movement, whereby rotation of a first drive member having threaded engagement with an internally threaded longitudinal bore in the cutter holder will cause radial adjustment of the cutter holder relative to the boring head. Rotation of the first device member is accomplished by rotation of a second drive member having a gear drive connection with the first drive member. A first micrometer dial on the outer end of the first drive member provides for rough orientation of the cutter holder during such radial adjustment thereof, whereas a second micrometer dial on the outer end of the second drive member provides for extremely precise measurements of such radial adjustment.

Abstract: A rotary cutting tool including a cutter body rotatable about a central axis and defining a plurality of recesses opening on a radial and a peripheral surface of the body. Insert support assemblies having portions extending radially from the cutter body are mounted in each recess. Each insert support assembly includes an insert support arm having a mounting portion by which the support arm is mounted to the cutter body and an insert supporting blade portion for supporting an insert a predetermined radial distance beyond the peripheral surface of the cutter body. A clamp member, secured to the cutter body, clamps the insert to the blade portion. A force generating wedge also secured to the cutter body abutably engages a surface on the clamp member and is operative to cause the clamp member to apply a clamping force to the insert. A radial adjustment acting between a wall of the associated recess and a surface on the clamp member adjusts and maintains the radial position of the clamp member.

Abstract: The invention covers the control of the horizontal position of a reamer cutting tool in relation to a tool-holder pin.A support is surmounted by a core which slides sideways in the pin. The slide is controlled by a screw whose head forms a vernier, while its crown wheel is engaged tangentially by a worm screw. A flange holds the whole mechanism in place horizontally. A locking screw locks the support into position once an angle has been fixed.The invention has the following features: reduction in the overall diameter of the tool; and increase in precision by the suppression of action which would interfere with the precision adjustment and throw it out of tolerance at the moment the device is finally locked into position.

Abstract: A router bit having an adjustable blade for cutting various widths of grooves includes a mechanism for maintaining static balance about the axis of rotation for all positions of the cutting blade within the range of adjustment. The router bit includes a main body adapted to be held and rotated by a chuck, and which includes a bore whose axis is parallel to but displaced from the axis of rotation of the main body. An arbor with an offset cutting blade is adjustably mounted in the bore, and the width of the groove is determined by the angular position of the arbor within the bore. However, such adjustment alters the static balance of the router bit about its axis of rotation. In accordance with the present invention, this source of unbalance is compensated by providing a counterweight whose position is dependent on the angular position of the arbor within the bore. In the preferred embodiment a cam on the shaft of the arbor bears against and determines the position of the counterweight.

Abstract: In the known, adjustable, single-cutting-edge machine reamers having a turnable cutting plate, the adjusting and re-adjusting operations are awkward and associated with difficulties because, at least as far as adjusting is concerned, adjustments have to be made at two points, and moreover for adjusting to the set desired value it is generally necessary to proceed in a step-by-step manner, gradually working ones way up to the desired value. These problems are due to the fact that adjustment can in principle only be made in the forward direction, that is to say in the direction of increasing diameter, whereas reverse adjustment in the proper meaning of the term is not possible but can only be achieved indirectly by carrying out a new adjustment with a lower starting value and adjusting in a forward direction.

Abstract: The head of this boring tool carries two bit holders, which can be radially adjusted to different cutting widths by tooth systems provided on sloping faces of the head and/or bit holder. To ensure that there is still reciprocal supporting of the bit holders even in the outermost adjustment range thereof, cams are provided for extending the supporting surfaces. As an alternative to or in addition to this measure, the spacing between the front end face of the head and the surface of the bit holder parallel thereto is made so small that when high cutting forces occur these surfaces are supported on one another before the elastic deformation range of the bit holders is exceeded.

Abstract: The boring tool has an insert upon which one or two boring heads are slidably guided along a swallowtail track. For fixing the boring heads in position, set screws are provided which are adapted to bear against the clamping surfaces of the insert. To preclude radial sliding of the boring heads, even when the set screws are only partially tightened, the clamping surfaces are inclined relative to the longitudinal axis of the insert, and the spacing of the clamping surfaces from the longitudinal axis increases toward the ends of the insert.

Abstract: A scratcher element in a cutter arrangement of a wood-cutting tool is formed of a rectangular plate and two projections outwardly extended from the side faces of the plate. The scratcher element is inserted in a special slot formed in a supporting strip of the cutter arrangement. These two projections each have a cross-section of the shape of a segment of the circular disc.

Abstract: A cutting tool revolvable about a center axis, comprising a rake surface defined by a plane inclined with respect to the center axis, a cutting edge having a profile which is defined by an intersecting line between a rotational surface drawn by the revolution of the cutting edge and the inclined plane, and a cylindroid clearance surface having generatrices extending in the same direction along a directrix defined by the cutting edge profile.

Abstract: A holding device for a rotary cutter has a supporting member extending over a greater part of each cutting element and having a web and holding tongues provided with an openings for receiving tightening screws, an abutment surface for abutting the cutting element and determining a projecting length of the latter, a wearing member fixed in the body part for abutment of the rear surface of the cutting element, a locking member for fixing the wearing member, a centrifuging wedge member with a wedge surface pressing the cutting element against the wearing member, wherein the wearing member has a locking groove which is open toward the cutting element and forms the abutment surface and in which the web of the supporting member is received in a form locking manner, and the centrifuging wedge member lies with its wedge surface directly against the front surface of the cutting element.

Abstract: A tool cartridge to be fastened to a boring bar for line boring operations comprising a pair of split legs on the tool cartridge. Each leg has an insert with a threaded bore having a different pitch. A differential screw comprising two threads on the shaft corresponding to the two different threaded bores on each insert effects a micro-adjustment of the radially moveable leg on the cartridge holding the cutting tool when the differential screw is rotated.

Abstract: The tool holder of the present invention provides a pivoted tool support mounted to a base and including a cam extending between the base and the pivoted holder for longitudinal movement. A drive follower extends between the cam and base to convert the longitudinal cam movement to pivotal motion of the holder with respect to the base to provide precise adjustment of a machine tool attached to an opposite end of the holder.

Abstract: A boring cutter which is adapted to be rotated about its central axis includes at least one insert pocket having opposed parallel leading and trailing walls, as well as a bottom wall. An insert seat of generally L-shaped configuration is provided, with the leading surface of the insert seat being in abutting relationship with the leading wall of the pocket. The opposed trailing surface of the insert seat includes both a leading and rear locating support surface adapted to receive an indexable cutting insert. A wedge is receivable between the rear surface of the cutting insert and the trailing wall of the pocket. The radial position of both the insert seat and the wedge, relative to the central axis of the boring cutter is adjustable. By this arrangement, the radial position of the cutting insert may be varied to thereby adjust the effective outer diameter of the boring cutter.

Abstract: A tool having a shank, cartridges on the shank positioned by a screw having two externally threaded parts which engage two internally threaded sleeves which in turn engage threaded openings in the cartridges. One of the threaded openings being right-hand thread and the other opening being left-hand thread. Thus, the cartridges can be moved laterally together or individually by rotating the screw or any of the sleeves.

Abstract: The specification describes a cutting tool comprising a cylindrical support having a series of cavities arranged in helicoidal rows on its outer surface; in each cavity, a tool-carrier and a chip-breaker are secured by means of a set-screw; means are provided for adjusting the height of the tool-carrier and the chip-breaker, for the purpose of adjusting the position of the blades of these elements within the cavity.

Abstract: An adjustable multiple blade boring bar with diametrically disposed overlapping blade blocks, each adjustable in and out and a control cartridge having actuator pins movable in opposite directions in response to rotation of a differential screw, the pins being oriented in relation to slots on the blade block to move in a camming relationship to shift the blocks in and out. A differential screw associates the control cartridge and the boring bar to permit radial equalization of the blade block when installed initially or after sharpening.

Abstract: Radial adjustment of cutter blades in a roughing hypoid gear cutter is effected by a tapered adjustment block. A differential screw engages threads in the block and in the cutter body to cause relative axial displacement. The taper on the adjustment block in cooperation with a tapered surface on the cutter body translates the axial displacement into a radial displacement of the upper surface of the adjustment block and the corresponding cutter blade. A pair of cap screws permit independent axial adjustment of each cutter blade. A one piece cutter body provides maximum simplicity and rigidity.

Abstract: To permit resharpening of cutter blades of a helical milling cutter, the cutter blades or bits of a multi-bit cutter have decreasing thickness, and are placed in grooves having the same helix radius, but the centers of the helical axes offset from the center of rotation of the cylindrical cutter body in the direction towards the associated groove, so that cutter blades of lesser thickness are still seated firmly in the bottom of the respective groove. Upon dulling of the cutters, the thinnest one of the cutter blades is discarded, the thickest one only replaced and the worn blades moved up one step along the circumference of the body into grooves which are progressively more shallow, to compensate for decrease in thickness of the respective cutter bits upon regrinding to resharpen the bits.

Abstract: An adjustable boring tool including an axial shank and a socket for mounting a cylindrical boring bar with an offset axis clamped in adjustable position through transverse and longitudinally slotted segments on one side of the socket together with a transverse screw for clamping the slotted segments against the boring bar. A graduated dial fixed to the boring bar provides calibrated adjustment over a range equal to four times the offset.

Abstract: A toolholder for recessing operations having at least one recessing tool having a cutting body of hard metal, the recessing tool being arranged in a cylindrical receiving bore in the toolholder and being held by a retaining screw arranged in the toolholder perpendicularly to the receiving bore. A tool support is arranged in the receiving bore and has a semi-cylindrical shank. The flat surface on the semi-cylindrical shank has at least one groove extending parallel to its axis for receiving an exchangeable cutting body slidably mounted in the groove. A clamping jaw for each cutting body is provided in the other remaining half of the receiving bore and, under the action of the remaining screw, is supported at its front, outer end on the top of the cutting body and by its rear end on the supporting surface of the tool support. The clamping jaw has at its front end a shoulder supporting the cutting body in the direction of sliding and is provided with a setscrew extending parallel to the groove.

Abstract: An apparatus for reducing fiber material to chip form including an anvil assembly defining an anvil bearing surface of generally U-shaped configuration having leg portions joined by a connecting portion, at least one knife blade and carrier means for moving the knife blade in surface-to-surface bearing engagement with the anvil bearing surface in a direction extending from adjacent the ends of the leg portions towards the connecting portion to effect cutting or severing of the material into chip form.

Abstract: This invention pertains to a cutting tool bit as used with and in the back spot facing tool as shown in my U.S. Pat. No. 3,827,821 as issued on Aug. 6, 1974. As shown in this patent the cutting tool bit member has unequal projections and cutting faces and it is contemplated that the shorter blade portion is three-quarters the length and has an effective cutting area three-quarters of the full length blade portion. To insure a smooth and flat spot face a precise grinding of this cutting tool bit is required. It is also required that the chips be directed in a desired spiral away from the cutting tool. An eight degree slope is provided as an angled face on the top surface of the cutting tool. The cutting edge of the cutting tool bit is also relieved preferably by a three degree slope away from the cutting edge.

Abstract: The rotating cutter head of a reamer is formed with a recess, open in a radially outward direction and one circumferential direction relative to the axis of rotation, and a blade is retained in the recess between opposite, radially extending faces of the head and of a clamping shoe that may be adjusted inward of the recess. Two face portions of the blade are engaged by the respective faces of the head and shoe in area contact in planes which converge in a radially outward direction at a small acute angle to prevent movement of the blade from an initial, radially adjusted position under cutting stress.

Abstract: A milling cutter has a cutter body, a plurality of stops received in the cutter body, an adjusting device for separately axially displacing each stop, a cutter blade received in each stop and a wedge member associated with each stop for tightening each cutter blade to the respective stop. The adjusting device comprises a projection which is attached to and extends from each stop and which is received in a recess provided in the cutter body, at least two axially oriented clamping faces which form part of each projection and which are inclined with respect to one another and set screws cooperating with each clamping face. Each set screw is supported in the cutter body in a substantially radial orientation with respect to the axis of the cutter body. Each clamping face is obliquely disposed with respect to the orientation of the associated set screw for effecting an axial shift of the stop upon tightening the respective set screw.