Abstract: A cutting head rotatable about a head axis has a cap portion and a mounting protuberance joined thereto. The cap portion has N cutting portions circumferentially alternating with N head flutes. The mounting protuberance has N circumferentially spaced apart engagement portions, each including a radially outward facing clamping surface and a torque transmission surface. In a cross-section taken in a head plane perpendicular to the head axis, a first imaginary circle having a first diameter circumscribes the N clamping surfaces, and N radially outermost torque points of the N torque transmission surfaces define a second imaginary circle having a second diameter. The second diameter is greater than ninety percent of the first diameter. A rotary cutting tool includes a tool shank extending along a shank axis and a head receiving pocket at a forward end thereof, and the cutting head is releasably secured in the head receiving pocket.

Abstract: A system for machining an abradable material of a gas turbine engine and associated methods. The system includes a frame including a first arm extending from a central location. The system further includes an attachment structure coupled to the frame at the central location. Moreover, the attachment structure is configured to couple to at least a fan rotor of the gas turbine engine. Additionally, the system includes a cutting apparatus coupled to a first distal end of the first arm opposite the central location. The cutting apparatus includes a rotating shaft and plurality of cutting disks coupled to the rotating shaft. Further, the plurality of cutting disks define a helical cutting profile configured to machine a contour within the abradable material complementary to at least one fan blade of the gas turbine engine.

Abstract: A cutting insert for a tool for machining a workpiece, comprising a first side, an opposite second side and a bore running along a bore axis. The bore penetrates the cutting insert and extends from the first side to the second side. The cutting insert comprises at least three cutting heads arranged distributed on a periphery of the cutting insert, wherein each of the at least three cutting heads comprises a cutting edge, which runs transversely to the first side and the second side and extends between the first side and the second side. The at least three cutting heads comprise a first cutting head, a second cutting head, which in a peripheral direction directly follows the first cutting head, and a third cutting head, which in the peripheral direction directly follows the second cutting head. The cutting insert has a first support surface arranged on the first side, which first support surface runs orthogonal to the bore axis and at least partially surrounds the bore.

Abstract: An insert portion (3) of a thread mill (1A) is fixed to a leading end portion of a body (2A) using screws (8). The insert portion (3) is configured by overlaying an insert (4) for finish machining and an insert (5) for rough machining. On respective mating faces of the inserts (4, 5), convex portions and concave portions of the mating face of the insert (4) are overlaid with concave portions and convex portions of the mating face of the insert (5). The thread mill (1A) can cut a female screw in a hole formed in a workpiece by performing right-hand cut down-cut milling, for example. The inserts (4, 5) simultaneously cut an inner peripheral surface of the hole, and the rough machining and the finish machining can thus be performed in a single pass. By the convex portions and the concave portions of the respective mating faces of the inserts (4, 5) being overlaid with each other, the inserts (4, 5) partially overlap in their respective thickness directions.

Abstract: A milling cutter is configured to process an edge of a workpiece to a required profile. The required profile includes a first portion and a second portion coupled to the first portion. The milling cutter includes a shank having a central axis, at least one first cutting edge, and at least one second cutting edge. The first cutting edge is configured to rotate around the central axis of the shank along a first rotation path to process the first portion of the predetermined profile, and the second cutting edge is configured to rotate around the central axis of the shank along a second rotation path to process the second portion of the predetermined profile. The first rotation path is different from, and connected to the second rotation path.

Abstract: In a cutting tool having an indexable cutting insert with three cutting portions, the cutting insert is removably securable to an insert holder by means of a fastener. The cutting insert has two opposing end surfaces with a peripheral side surface extending therebetween. At least one end surface has a central boss protruding therefrom with a raised support surface, and the peripheral side surface has three abutment recesses. In an end view of the cutting insert, each of the three abutment recesses is visible and located inside a first imaginary circle circumscribing the visible central boss. A holding portion of the insert holder has a seating surface with at least one protuberance protruding therefrom. The support surface is in clamping contact with the seating surface, and exactly two of the three abutment recesses are engaged with the at least one protuberance.

Abstract: The invention is directed to a drill system that better uses the power curve of modern machine tools. The drill system uses IC inserts to perform the major hole diameter cutting, and a central drilling system that cuts the remaining minor diameter portion of the hole, and is configured to see less cutting surface footage, due to its position from the rotating center of the tool. A connection between the drill head and a holder body secures the drill head in a manner to effectively absorb lateral drilling forces. The drill system allows for a large diameter deep hole that remains straight throughout to be drilled at higher speed and lighter feed rates thus offering a more productive tool that takes advantage of the power curves and lower thrust capabilities of modern machine tools.

Abstract: The invention relates to a rotating tool including a support shaft extending in the axial direction along a rotational axis and a tool head connected thereto having a base body extending along the rotational axis and a core, to which a jacket made of a cutting material is placed, wherein the core has a circular cross-section (Q) in the radial direction and a jacket has a specified wall thickness and wherein a number of grooves is made in the jacket in order to form a number of cutting edges.

Abstract: A cutting edge adjustment device for a cutting tool for adjusting the position of a cutting edge of a cutting insert by causing movement of the cutting insert includes a rotary member for producing the movement. The rotary member is formed into a shape in which a substantially cylindrical portion having a constant radius and a cam portion having a cam face whose radius is gradually increased in a manner corresponding to the amount of the movement are arranged in a direction of a rotational center axis. The cam face is formed in such a manner as to have a section in which a radius is linearly increased, and consequently, the unit rotational angle of the rotary member on the rotational center axis is proportional to the unit movement amount of the cutting insert.

Abstract: A cutting tool for machining a workpiece. The cutting tool comprises a holder and at least two cutting inserts which are separated from each other by a spacer element. The cutting tool may be used to produce two or more bevels (and/or joints and/or grooves) at precisely defined spacings in only one operation. Through the use of spacer elements of different lengths, it is possible to produce bevels at different spacings. The spacer element preferably has an interface which comprises only radial contact surfaces, which run parallel to a longitudinal axis of the spacer element, and a substantially flat axial contact surface, which runs transverse to the longitudinal axis. The length of the spacer element can therefore be shortened on the rear side of the spacer element without destroying said interface.

Abstract: Milling tool formed for hobbing of workpieces having cogs has a cylindrical tool body defining a rotation axis and a plurality of disc-shaped segments. Each segment includes a hub part having two opposite plane-parallel end surfaces extending perpendicular to the rotation axis, and a peripheral cam having a plurality of tangentially spaced-apart milling inserts. Bordering segments are detachably interconnected by male and female members co-operating in pairs and situated with the rotation axis extending through the members, each of which include a contact surface converging from a big end toward a small end and, in a cross-section across the rotation axis, form an out-of-round curve. Contact surfaces are dimensioned so that, when members are brought together, they direct their two bordering segments toward an end position centered and mutually angularly determined by the out-of-round cross-section curve and where plane-parallel end surfaces abut against each other. An individual segment is disclosed.

Abstract: A tool holder, used for holding a milling cutter and a grinding wheel, includes a tool bar, a tool base, a flange, a mounting shaft, and a fixing ring. The flange is formed on an end of the tool bar. The tool base is used for mounting the milling cutter. The ends of the mounting shaft are connected to the flange and the tool base respectively. The grinding wheel is mounted on the mounting shaft. The fixing ring is used for fixing the grinding wheel to the mounting shaft.

Abstract: The present invention concerns a method of milling ball races which are of an approximately elliptical profile which has a first semi-axis extending substantially perpendicularly to the base of the ball race and a second semi-axis extending perpendicularly to the first semi-axis and perpendicularly to the longitudinal direction of the ball race, wherein a side milling cutter is used to produce the ball race, the peripheral cutting edges of which produce the elliptical profile of the ball race, wherein the cutting edges of the side milling cutter in a section containing the axis of the milling cutter are also of an elliptical profile whose first semi-axis extends perpendicularly to the milling cutter axis and whose second semi-axis extends parallel to the milling cutter axis.

Abstract: The invention is directed to a cylindrical milling cutter whose cylindrical body is provided with grooves which extend along its length at a distance from one another and at an angle to the longitudinal axis, and indexable cutting inserts, particularly coated carbide cutting inserts, are arranged in these grooves.

Abstract: A movable blade unit for wood cutting machine is mounted to the rotating shaft of the wood cutting machine and includes a blade and an inner ring which is located between the blade and the rotating shaft. A movable ring is connected to the movable blade unit and includes a flange, an outer collar and the inner ring, wherein the flange is connected to the outer collar which is rotatably connected to the inner ring. The inner ring is mounted to the rotating shaft and a gap is defined between the inner ring and the rotating shaft. The inner ring includes multiple sets of rotating members which are in contact with the grooves in the rotating shaft so that the inner ring is rotatable and movable relative to the rotating shaft with little or reduced friction.

Abstract: A rotary cutting tool extending along a longitudinal axis and including a first cutting portion including a plurality of first helical teeth having a helix direction and being designed to work in a first direction of rotation of the tool. The tool also includes a second cutting portion with a plurality of second helical teeth having, as helix direction, the same helix direction as the first cutting portion and being designed to work in a second direction of rotation of the tool, opposed to the first.

Abstract: A scuffing device (30) arranged to impart texture to a plastic pallet surface (12) having a plurality of cutting members (34) axially aligned and mounted adjacent each other, the cutting members (34) having radial toothed edges for cutting into and imparting texture to the plastic pallet surface upon rotating engagement therewith. The device further having a shaft upon which the cutting members are mounted for providing rotational movement to the cutting members.

Abstract: A deburring tool includes a proximal cutter and a distal cutter which form a V-shaped groove within which a workpiece is positioned to remove burrs from both sides of the workpiece simultaneously. The cutting edges of the proximal and distal cutters do not include any under cuts and therefore can be formed using a powdered metal process.

Abstract: A coping bit capable of being easily modified to cut profiles having tenons of varying lengths is provided. The coping bit includes an axially extending primary drive shaft and a first cutting member fixed on the primary drive shaft. An axially extending secondary drive shaft having an upper and a lower portion is removably mounted on the primary drive shaft for rotation therewith, and a second cutting member is mounted on the secondary drive shaft in spaced relation to the first cutting member when the secondary drive shaft is mounted to the primary drive shaft.

Abstract: A tool for chip removing machining includes a tool head having at least one chip pocket formed therein which serves as a common pocket for first and second replaceable cutting inserts. The inserts perform mutually different machining operations and have their respective active surfaces disposed in generally mutually facing relationship to one another within the pocket. A radially outermost portion of the first insert is spaced farther from a center axis of the tool head than is a radially outermost portion of the second insert.

Abstract: A scuffing device (30) arranged to impart texture to a plastic pallet surface (12) having a plurality of cutting members (34) axially aligned and mounted adjacent each other, the cutting members (34) having radial toothed edges for cutting into and imparting texture to the plastic pallet surface upon rotating engagement therewith. The device further having a shaft upon which the cutting members are mounted for providing rotational movement to the cutting members.

Abstract: For producing forked roots of turbine blades, the turbine blades are, in a first step, roughed-in and smoothed (finished) on their outer faces in a single operation with two rigidly coupled disk milling cutters that are provided hard metal cutter inserts. In a second step, the forked root is formed with fingers by a set of rigidly coupled disk milling cutters that are provided with hard metal cutter inserts. The disk milling cutters form slots in the forked root. All of the slots are simultaneously opened (roughed-in) and smoothed (finished), the slots having parallel walls.

Abstract: A gang blade assembly which controls the trajectory of detritus from a ball grid array substrate dicing operation is described. The assembly includes a cover which partially encases a hub with a plurality of blades. A brush is mounted on the cover to disrupt an air flow created by rotation of the hub and blades. The brush extends beneath the cover and has bristles which contact the hub. The bristles also serve to clear the hub of any detritus produced during dicing. More than one brush may be mounted on the cover.

Abstract: A method for assembling or disassembling cutting inserts mounted in a rotary cutting tool assembly (20). The cutting tool assembly comprises a plurality of coaxially mounted cutters (22) on a common shaft (24) having an axis of rotation (A). The cutters have insert receiving pockets (30) having threaded bores (38) substantially parallel to the axis of rotation (A). Each of the insert receiving pockets has a cutting insert (28) having a through bore that is substantially parallel to the axis of rotation (A). Each of the cutting inserts is secured by means of a clamping screw (36). Each clamping screw is tightened with a key (42), the key having a head portion (44) engaging the clamping screw and a holding portion (46) transversely directed to the axis (B) of the head portion.

Abstract: The present invention is directed to a rotatable abrading wheel assembly useful to finish rubber articles such as tire casings. The assembly has three rotatable wheels, with a central abrading wheel disposed between a pair of lateral support wheels. Each of the three wheels is stamped and formed from sheet metal stock and includes one or more apertures to accommodate an abrading tool drive shaft. The central abrading wheel has a diameter greater than that of the lateral support wheels to thereby provide peripheral abrading portion which is comprised of a series of circumferentially spaced teeth.

Abstract: A tool for machining workpieces, having at least one cutting edge which is fastened to a main body of the tool. A respective deburring device removes the burrs produced by each cutting edge during machining. The deburring device is supported at the main body near the cutting edge and is movable by an actuatable piston between a retracted storage position in the tool body and an extended active position out of the tool body for deburring after surface machining.

Abstract: The invention relates to a device and method for making tenons using an adjustable shim placed between cutting blades. The adjustable shim has a plate with a recess capable of accepting spacers of varied thicknesses and a cover that encloses any of the spacers placed in the recess. The thickness of the adjustable shim is adjusted by placing spacers in the recess to shim apart the cutting blades leaving between them a distance approximately equal to the desired tenon thickness.

Abstract: A method of machining a workpiece uses a complex tool having a number of inserts. The tool is installed on a tool holder of a machine tool and used for a turning machining operation on a workpiece, including rotating the workpiece, and selectively using one or more of the inserts on the complex tool, with the complex tool being fixed and held. A milling machining operation is performed on a workpiece using one or more of the inserts, with the complex tool being rotated and driven. Both turning machining and milling machining operations can be performed without changing tools. Extremely efficient machining is possible.

Abstract: A router bit for forming the edges of a raised door panel which includes a rotatable drive shaft, a profile cutter fixed to the drive shaft, and a back cutter fixed to the drive shaft for rotation therewith. A cylindrically-shaped pilot member is disposed intermediate the profile cutter and the back cutter. The pilot member is fixed to the drive shaft for rotation therewith and the exterior surface of the pilot member is coated with a friction-reducing material to reduce or eliminate any significant friction between the exterior surface of the rotating pilot member and the raised door panel.

Abstract: A reamer T including three-stage chip groups 6, each group having five chips 6 disposed circumferentially on a circle of a diameter smaller than an inside diameter of a hole H in a work W, axially at a given pitch P. When the axis Lt of the rotated reamer T is moved circumferentially on a circle about the axis Lw of the hole H after the reamer T is inserted into the hole H in the work W, the three-stage chip groups 6 simultaneously cut an inner peripheral surface of the hole H. When the reamer T is moved in the direction of pulling from the hole H by one pitch P in this state, the three-stage chip groups 6 simultaneously cut the inner peripheral surface of the hole H in the work W respectively by one pitch. Therefore, a boring work for providing the hole H having a depth D=3P in the work W can be completed in a short time.

Abstract: The invention pertains to a device for cutting and chamfering thin-walled pipes. In order to cut and chamfer a pipe, a drive unit with tools arranged on its shaft is manually guided around a pipe that is clamped in a vise by means of clamping jaws with a semicircular contact surface. The tools, namely a saw blade and a milling cutter, are arranged one behind the other on the shaft. The saw blade is provided with a depression, into which the milling cutter is inserted such that the outer edge of the milling cutter is protected.

Abstract: A rotary cutter head is provided having body shape characterized, generally, outwardly-shifted cylinder segments to shift cutter head weight and force to the knife blades and to balance and extend the knifes from the central core of the cutter head while reducing workpiece waste buildup along the knife front, and while decreasing clogging of knife mounting components and reducing over-heating of knives and with securing corrugations on the knife cutting face, engageable with corrugations on the cutter head for securing the knife base against a foot on the cutter head.

Abstract: A cutting tool assembly wherein a cutting head is releasably retained by a tool holder by using of interacting coupling members, with one of the coupling members being inserted into a cavity of the other coupling member, with radially extending abutment wings of said one coupling member passing respectively between successive support wings of the other coupling member, rotation of the one coupling member resulting in the abutment wings abutting and resting on the support wings, thereby effecting a retaining coupling between said cutting head and said tool holder.

Abstract: A method for manufacturing a liquid jet recording head comprises the steps of obtaining a laminated body by laminating a liquid path formation layer forming liquid paths on a metallic base board having discharge energy generating elements on it, forming an orifice surface by cutting the laminated body thus obtained, and grinding the orifice surface thus formed by use of a cutting tool or a milling cutter. With this method that uses a metallic base board, it is possible to obtain a high-performance yet an inexpensive liquid jet recording head without any defects on the orifice surface, which contributes to implementing more stabilized liquid discharge.

Abstract: The invention concerns a tool head for shaping machine designed to machine the side segments of tree trunks. The tool head has a rotationally driven main body (1) with several groups of chipper blades (2, 3) round its circumference. The front chipper blade (2) in each group and a front-mounted finishing tool, e.g. a segment (4) of a circular-saw blade, are mounted on a common tool carrier (5). The tool carrier (5) is detachably attached to the tool-head main body (1) and is held in place by clamps (16). If, as a result of wear, it becomes necessary to replace a tool, the tool carrier is replaced after the clamp (16) has been loosened.

Abstract: A tool assembly comprises first and second tool assembly units formed with interfitting male and female coupling members coaxially coupled together so as to have a common longitudinal axis, whereby a moment transmitted to the first unit is transmitted to the second unit. Each coupling member comprises a torque transmitting component having a central portion of a radial dimension defined by a radius of a circle inscribed therein and at least one arm extending from the central portion to periphery of the corresponding coupling member. The arms of the male and female coupling members have first side walls along which the coupling members generally contact and second side walls having a gap therebetween. The first walls are directed, at least at their contact regions, substantially radially with respect to the longitudinal axis.

Abstract: A tool for simultaneously machining two opposing edges of the end face of a horizontal plate is disclosed. The tool comprises two machining means, rotatable about a vertical axis; the lower machining means is at a fixed vertical position, while the vertical position of the upper machining means varies in conformance with the top surface of the plate, by being part of a vertically sliding subassembly that comprises one or more rollers and means to press the subassembly downward so that the rollers continuously touch the top surface of the plate.

Abstract: A cutter bit includes a body integrally formed with a mounting shank. The body is formed with a pair of chip boxes having an arcuate surface and a planar surface with a cutting knife mounted to each planar surface. A plurality of equally spaced recesses are formed in the body to reduce cutter bit weight, and to promote heat transfer from the cutter bit to the surrounding atmosphere. Adjacent recesses form annular ribs which extend circumferentially around the body from one cutting knife to the arcuate surface adjacent the other cutting knife. The arcuate ribs operate as heat exchanger fins by substantially increasing the outer surface area of the cutter bit thereby substantially increasing the rate of heat transfer from the cutter bit to the surrounding atmosphere.

Abstract: A wafer shaving cutter includes a plurality of first annular plates alternatingly arranged with spacers or second plates and joined together into a fixed member. Each of the first plates includes a plurality of circumferentially spaced teeth, each tooth having opposed side lands formed in a predetermined gear profile. The width of each tooth on the spacers is smaller than the corresponding tooth width of each tooth on the first plates to form grooves between adjacent cutting edges of adjacent disposed first plates. In one embodiment, a plurality of teeth having a smaller width than the teeth on the first plates are spacedly formed about each of a plurality of second plates alternatingly arranged with the first plates. The major faces of the first plates and the spacers or second plates are surface ground to a smooth finish. In a preferred embodiment, the teeth on the first and second plates are helically arranged along the shaving cutter.

Abstract: A rotary device for simultaneously treating two or more regions of a workpiece, which includes a rotatable shaft having an externally threaded portion. Mounted on the shaft, connected to the shaft or integrally formed with it, is a first tool. The device further includes a second tool which is mounted on the externally threaded portion of the shaft. The second tool is internally threaded so that rotation of the second tool axially displaces the second tool along the shaft, thereby changing the spacing between the two tools. The device further includes a set screw or similar mechanism for fixing the second tool at a location along said externally threaded portion of said shaft.

Abstract: An apparatus for cutting a path of propellant grain away from a solid rocket motor. The apparatus includes a telescoping arm connected to a rotatable body. A cutting tool having a primary and secondary cutter is connected to a distal end of the telescoping arm. The secondary cutter is disposed adjacent the primary cutter and configured to make cuts through the portion of propellant grain along the path such that the grain is cut away from the rocket motor in a plurality of pieces. The telescoping arm includes a plurality of interconnected extendable concentric cylinders configured with a plurality of ball/spring detents each bearing a resistance load for restraining one of the concentric cylinders such that the innermost unextended of said concentric cylinders extends prior to the extension of any other of said unextended concentric cylinders.

Abstract: A multiple saw blade adjustable dado cutter assembly. The cutter can be used with a table saw or a radial arm saw, for example, to make dado cuts in board lumber. A pair of cooperating cams, each connected to a saw blade, can be adjusted to make a dado cut of a desired width. If the desired dado width is wider than the two blade configuration can cut, a center cam attached to another blade can be inserted between the pair of cooperating cams. With the three blade configuration, the three cams cooperate to allow the three blades to be spaced for the desired width of cut. In both configurations and at any spacing width, the two or three blades employed remain in a generally parallel alignment and transverse to the axis of the arbor on which the assembly is secured. To permit the blades to function with this geometrical relationship and to be adjustable, not all of the blade teeth lie in the same plane. The sequentially operating three or more cam assembly has uses beyond dado cutting.

Abstract: This invention relates to a rotary cutter comprising a central member (11) adapted to be mounted to a shaft for rotation therewith and supporting a plurality of teeth (14a, 14b) located at intervals around a circular path, each tooth having at least one cutting edge (15, 16), a second member (12, 13) adapted to be mounted in association with the first member for rotation therewith and being capable of selective angular displacement in relation to the first member, said second member supporting a set of guides (18, 19) located at intervals around a circular path such that each guide is associated with one tooth of the plurality of teeth and is located ahead of said tooth.

Abstract: There is disclosed a saw blade mounting assembly of this invention for a tire rasping apparatus, which comprises at least one rotatable cap and a plurality of pins extending orthogonally from the cap to receive the saw blade mounting assembly thereon. The saw blade mounting assembly comprises at least one saw blade, a spacing member and at least one retaining blade. The saw blade has an inner smooth edge, an outer edge and a plurality of bores disposed therealong in alignment to receive corresponding ones of the plurality of the pins. The outer edge of the saw blade has a plurality of cutouts evenly spaced therealong and extending towards the inner edge to form a plurality of teeth. Each tooth is formed between successive cutouts. The spacing member has a plurality of bores disposed therealong in alignment to receive corresponding ones of the plurality of the pins.

Abstract: A debarker head for use in a rotary tree debarking machine has a drive shaft with a polygonal cross sectional shape and a plurality of substantially similar cutting elements with mounting apertures corresponding to the drive shaft shape and sized for slip fit engagement of the cutting elements on the drive shaft so that the cutting elements may be mounted to the drive shaft at a number of rotational positions relative to the drive shaft. Further, the cutting elements have a plurality of arms with cutting knives. The number of arms of at least some of the cutting elements is not an integer multiple of the number of sides of the mounting aperture so that a variety of cutting knife arrangements for debarking various species of logs using the same head may be obtained by adjusting the rotational position of the cutting elements relative to the drive shaft. This design of debarker head can be repaired in the field.

Abstract: An apparatus allows for chamfering and deburring the end edges of a toothed production gear in a single operation and with one and the same tool. The tool includes two pressure wheels. Provided on each pressure wheel, axially side by side, are a ring of guide teeth and a ring of deburring teeth projecting circumferentially beyond the ring of the guide teeth. The rings have a filleted transition between them and together form chamfering teeth by means of which the end edges of the production wheels are pressed radially and axially against the production gear by means of adjusting drives.

Abstract: An indexable slot cutting tool for narrow widths having both head and base members with adjacent opposed cutting faces. An axially oriented sleeve with right hand differential pitch threading engages the head and base members to effect axial movement of the cutting faces for slot adjustment.

Abstract: A divided milling cutter comprises a first cutter half and a second cutter half which are adjustable in relation to each other with respect to their mutual distance and are both connected to a first, common, hydraulic sleeve which has an internal, annular pressure chamber and is threadable on to and securable to a cutter spindle or the like. To make possible a continous or step-less variation of the distance between the cutter halves in a simple way even when they are mounted on the cutter spindle said second cutter half is fastened to a second sleeve which is in threaded engagement with a third, threaded sleeve having a substantially annular flange which abuts an end of, or shoulder on, the first sleeve.

Abstract: The clamping mechanism and companion cutting insert disclosed are designed for use in a milling cutter intended to be ganged with other like cutters on a common rotational axis for the simultaneous milling of multiple slots or grooves. The axially movable clamp for the on-edge inserts employed in the cutter is operated indirectly by an adjusting screw accessible radially from the outside of the ganged cutter bodies without requiring disassembly of the individual cutters to index or replace the cutting inserts. In each of several clamping mechanisms disclosed, the ultimate clamping element or detent takes the form of an arm which is rocked into engagement with the insert at the site of a blind depression in the face of the insert, being drawn in the axial direction by inward adjustment of a radially accessible adjusting screw, and rockable in the reverse direction by a return spring to release the insert as the adjusting screw is backed off.

Abstract: A tool for use in a groove mill to simultaneously form spaced grooves in the interior surface of a bore with the tool including a shank and a pair of heads mounted thereon in spaced relation and in a detachable, non-rotative manner. Each head includes a plurality of insert pockets and inserts secured therein by screw threaded retainers and notches in one head aligned with the screw headed retainers for the inserts in the opposite head to enable indexing of the inserts without disassembly of the heads.