Abstract: A cutting tool assembly includes a tool shank having a coupling opening, and an insert holder having an insert body to which an insert is coupled and detachably attached. A coupling protrusion protrudes from one surface of the insert body and is detachably coupled to the tool shank. Located on the coupling protrusion are a tapered contact portion which comes into contact with the coupling opening and provides a fixing force to fix the insert holder to the tool shank, and a contact surface at a rear end of the tapered contact portion which couples to a fastening member.

Abstract: A method and a device for machining a workpiece rotating about a rotational axis. The machining point moves along the cutting edge of a cutting edge plane and the surface to be machined in a rolling movement on an advancement plane not intersected by the rotational axis. A pivot drive implements a large enough pivot angle so that a first workpiece surface is machined by a machining point moving along the first cutting edge in a first machining step. In a second machining step, a second workpiece surface is machined, wherein the machining point moves along the second cutting edge and the second workpiece surface. The cutting edge has a curvature radius smaller than the distance from the pivot axis of the holder to the cutting edge. The holder can additionally be displaced on the advancement plane with a movement component in a direction transverse to the rotational axis.

Abstract: A cutting unit includes a detachable head assembly with a cutting insert and holder. The mating spherical surfaces in both parts helps to get freedom of movement, hence helps in getting different rake angles. A set of pins helps getting correct center height for the cutting insert when spherical surfaces of both parts are not in contact with each other. The pins when lifted up gives point contact with spherical surface of the head assembly. The pins are moved in the holes provided in the holder with the help of screw-nut principle. The head assembly is clamped against holder using a clamping ball mechanism. The clamping balls are free to rotate in their respective seating area. Rake angles are changed by turning the head assembly manually. Once the required rake is set, the clamping balls are fastened.

Abstract: A cutting tool (10) comprises a shank (12) for receiving a cutting insert (14) and a block (16) for delivering a flow of fluid to the cutting insert (14). Fluid is delivered to the cutting insert (14) through a fluid passageway (18) that extends through the shank (12) and the block (16). The block (16) is pivotable mounted on the shank (12). The block (16) pivots about screw (22) between a first and a second position. In the first position the block (16) is held in sealing arrangement with the shank (12) to allow the passage of a coolant through the fluid passage (18) to the cutting insert (14). In the second position the block (16) has moved to allow removal of the cutting insert (14) from the shank (12).

Abstract: A tool for refinishing a workpiece such as a brake drum includes an arm for a user to grasp the refinishing tool during operation. A pivotal swivel member is connectable to the arm. The swivel member is formed with an asymmetrical shoulder for compressively and rigidly fixing the swivel member and arm in a fixed linear alignment coincident with a longitudinal axis through the arm and swivel member during a refinishing operation. The asymmetrical shoulder also orients the swivel member in any angular position within a continuous range between zero degrees and forty-five degrees in one direction from the fixed linear alignment. A coupler is formed in the arm and in the swivel member to removably connect the swivel member and the arm. A plurality of demountable locking devices is included for variably positioning the swivel member in relation to the arm. A cutter is detachably mountable on the swivel member, and is adapted to refinish the rotating workpiece on a lathe.

Abstract: A tool holder is provided for retaining a cutting tool which can be pivotally adjusted to align the cutting tool and provide a precise cut. The tool holder body has an area of reduced cross-section which serves as a fulcrum about which the cutting tool is pivotable. The tool holder body has a forward tool end for retaining a cutting tool and a rearward end operative to be mounted or retained on a lathe or other machine tool. The forward tool end can be pivotally adjusted about the fulcrum to align the cutting tool and provide an accurate, straight cut into a workpiece. A lever arm attached to the cutting tool end is adjustable to cause pivotal movement of the cutting tool by displacing the tool end laterally in response to the force of the lever arm when it is drawn toward or away from the tool holder body.

Abstract: The present invention is a tool holder for supporting a cutting insert during a material-removal process. The tool holder comprises a body having a channel formed therein for receiving a finger that extends from a head. The finger is secured within the channel by an assembly screw that permits the head to move between a retracted position and an extended position relative to the body. When the head is in its extended position, the head is permitted to pivot relative to the body; however, when the head is in its retracted position a pair of shoulders on the body engage a pair of notches on the head, preventing the head from pivoting. A locking screw is also provided that locks the head to the body. The locking screw is designed so that as the locking screw is tightened, the head is urged against the body, thus providing a positive known position for the insert each time the head is moved.

Abstract: A cutting tool includes a rotary bar having an arcuate pocket in its side surface, and a segmental carrier arcuately slidable in the pocket to adjust the position of a cutting tip on a cutter blade. The carrier has a second arcuate pocket that slidably receives a segment-shaped shoe, such that the shoe can be arcuately adjusted to control or vary the back taper angle on the blade. The cutting blade is mounted flatwise on one face of the shoe, such that a corner tip on the blade projects beyond the profile of the rotary bar for use in reaming a hole in a workpiece. The adjustment axis of the shoe is coincident with the cutting tip on the reamer blade so that adjusting motions of the shoe do not disturb the position of the cutting tip achieved by arcuate adjustment of the carrier.

Abstract: A quick-change tool holder includes locating means for repeatably locating a cutting unit at a predetermined angular position with respect to a support member. The support member includes an axial bore for receiving a tubular shank on the cutting unit. The tubular shank of the cutting unit includes a keyway having a first locating surface along one side thereof. The clamping mechanism includes a key having a second locating surface along one side thereof. Upon actuation, the clamping mechanism imposes a torque force on the cutting unit to rotate the first locating surface on the cutting unit into abutting relationship with the second locating surface on the key to repeatably locate the cutting unit at a predetermined angular location. The torque force imposed on the cutting unit by the clamping mechanism therefore overcomes any inaccuracies in center-height adjustment attributable to the tolerance between the key and its corresponding keyway.

Abstract: A quick-change tool holder includes a center-height adjustment mechanism for adjusting the center height of the cutting tool. The quick-change tool holder includes a tool support member which is adapted to be mounted on a lathe turret or mounting block of a machine, a cutting head formed with a seat for receiving a cutting tool, and a clamping mechanism for clamping the cutting head to the support member. The tool support member includes an axial bore which receives a tubular shank of the cutting unit. The clamping mechanism is disposed within the axial bore and includes a pair of radially expandable locking elements to engage the tubular shank of the cutting unit. The clamping mechanism includes a key which engages with a corresponding keyway on the tubular shank for angularly locating the cutting unit. An adjustment mechanism is provided for rotating the clamping means about a longitudinal axis of the support member to change the angular location of the cutting unit.

Abstract: A single point adjustable triangular carbide cutting insert holder designed to clamp the cutting insert with maximum possibility for regrind or grinding for secondary operations. The insert holder is arranged for use in a milling machine and is collet-mounted by its shank. The jaw clamps can be removed for placement of the cutting insert between them, and are then refitted in the cavity where they are tightened by adjustment of a screw. As the screw is tightened, the jaw clamps are drawn further within the cavity, and are rigidly clamped against the cavity walls by frictional contact. When partially released, the jaws can be rotated within the cavity, enabling direct adjustment of the cutting insert rake and relief angle as desired. The cutting insert is seated between the jaw clamps on a seating cam mounted at an edge of the inner jaw face, such that the exposed portion of the cutting insert is a maximum.

Abstract: This invention relates to an adjustable face grooving tool holder adaptable for holding a cutting insert for cutting circular face grooves having widely differing diameters in the end face of a workpiece without interchanging tool parts.

Abstract: A face mill having one or more cartridges for adjustably supporting cutter inserts on the end face of the rotating tool body. Each cartridge has a convex arcuate surface seated against a concave arcuate seat surface formed on or in the milling tool body. A torsion bar is integrally extended from the cartridge parallel to the axis of the concave seat surface. Also, a manual adjustment screw is located perpendicular to the axis of rotation of the cartridge for applying an adjustment force to the cartridge in opposition to the action of the torsion leaf spring. The torsion bar applies a pre-load force to the cartridge. The manual adjustment screw exerts an opposing force that rotates the cartridge to a desired position for proper orientation of the associated cutter insert.

Abstract: A face mill having one or more cartridges for adjustably supporting cutter inserts on the end face of the rotating tool body. Each cartridge has a convex arcuate surface seated against a concave arcuate seat surface formed on or in the milling tool body. A torsion leaf spring is integrally extended from the cartridge parallel to the axis of the concave seat surface. Also, a manual adjustment screw is located perpendicular to the axis of rotation of the cartridge for applying an adjustment force to the cartridge in opposition to the action of the torsion leaf spring. The torsion leaf spring applies a pre-load force to the cartridge. The manual adjustment screw exerts an opposing force that rotates the cartridge to a desired position for proper orientation of the associated cutter insert.

Abstract: A machining tool to be mounted upon a cutter body, the machining tool including a cartridge for mounting upon the cutter body and an anvil rotatably affixed to the cartridge, the anvil including a pocket into which is affixed a cutting insert for rotation with the anvil.

Abstract: In known cutter heads, the centrifugal forces occurring at high rotational speeds may cause the occurrence of dilatations permitting the cutting edges of the cutting tools to shift from their adjusted positions. An object of the invention is the provision of a cutter head capable of being accurately and reliably adjusted for operation also at high rotational speeds.According to the invention, a clamping wedge 13 is provided with a skewed clamping surface 21b adapted to cooperate with a contact surface 21a of a cutter blade carrier 2 for clamping it in a groove 20 of a mounting body 1. The invention also proposes the provision of a prism wedge clamping system 10 for supporting the cutter head carrier 2 in the radial direction relative to the mounting body 1.

Abstract: A tool holder for a numerically controlled machine tool, in which a cutting edge provided on a base member is adjustable with respect to a reference surface on the base member by adjustment means. The adjustment means comprise a U-shaped slot in the base member. This slot serves to form a pair of lever portions in the material of the base member, which lever portions are connected to each other by an area of the base member serving as a pivot. An adjustment screw threadingly engaging the base member acts upon the free end of one of said lever portions such that upon an adjusting movement of the adjustment screw the first lever portion is deflected in a predetermined direction to thereby deflect the second lever portion of the opposite direction. The second lever portion transmits its movement to the cutting edge by means of a spacing member disposed in the slot (FIG. 1).

Abstract: A cutting-off tool comprises a holder (1) and a disk cutter member (2) with recesses (4) being interconnected by means of the bushings (5) having projections (6) which are received in the respective recesses (4) of the cutting-off tool (2) and wedge-and-screw mechanisms which interact with the cutting-off tool (2). Each bushing (5) has a longitudinal groove (13) leading out on its end face having the projection (6).

Abstract: A hollow housing (20) slidingly retains an extendable body (22) through an open end allowing forward and aft movement. A rotatable tool holding head (34) is adjustably connected to the body (22) and is free to rotate up to 180 degrees. Extendable adjustment in the form of a threaded shaft (44) and handwheel (46) provide the manual expansion movement by rotation of the wheel (46) located on the opposite end as the body (22). Radial movement is afforded by a similar handwheel (50) attached to the head (34) through a drive shaft (48). A slidable end (36) is attached to the head (34) and contains a removable cutting tool (38) that rotatably cuts away material from a rotated workpiece. In a variation of the body (20) an angular shape is added with or without a mounting slot. Also, a pair of servo motors (62) and (64) may replace the handwheels for electromechanical adjustment of the device incorporating another embodiment.

Abstract: The invention relates to a cutter head having a substantially cylindrical main body and a plurality of replaceably cutting elements disposed at the periphery of said main body and having at least one cutting edge in the axial and/or radial direction of said main body. For achieving a reliable three-dimensional adjustment of the cutting members within extremely close tolerances, each cutting member is mounted on a carrier member itself mounted on said main body and adapted to be radially and axially adjusted relative to the main body by means of separate adjustment means disposed between said main body and said carrier member, and to be fixed relative to said main body with the aid of clamping means.

Abstract: A linearly and angularly adjustable holder for a cutting tool having primary and secondary cutting edges includes a basic element, a receptacle element for the cutting tool rotatably mounted on the basic element, and a setting element slidably mounted on the basic element.The receptacle element is mounted on the basic element so as to be pivotal about the point of intersection of the primary and secondary cutting edges of the cutting bit. An adjustment screw 50 whose threaded portion is seated in the basic element and whose head engages a recess in the receptacle element serves to perform the angular adjustment. The linear adjustment is accomplished with the aid of a double threaded adjustment screw which connects a wedge and the basic element and which slidably engages the setting member to control the length of the holder.

Abstract: A cutting tool comprising a holder and a removable indexable cutting insert clampingly held on the holder. The holder has a cut-out portion having a concave surface and an insert support and clamping block having a conforming convex surface corresponding to the concave surface of the holder cut-out portion movably held relatively therewith by a differential screw. The insert support and clamping block has a surface supporting the insert and a pin projecting through a mounting aperture in the insert. The cut-out portion has sidewall surfaces engaged by corresponding lateral faces of the insert when the block is driven by action on the differential screw into an insert clamping position. The block has a projecting tang or flange disposed in a corresponding groove in the surface of the cut-out portion, the tang or flange and groove combination acting as a pilot and locator for the insert support and clamping block and as a means of transmitting cutting forces applied upon the cutting insert to the holder.

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: A cutting tool for use with a lathe includes an elongated body member having a generally rectangular cross section dimensioned and configured for cooperation with an associated tool post. The elongated body member has a head end having a step shaped surface thereon on which is disposed a plurality of generally radially extending ribs disposed at equal angular increments. The ribs extend through an arc of 360 degrees. A first head assembly has a lower extremity which includes a surface having a plurality of generally radially extending ribs disposed at equal angular increments thereabout. These ribs are uniformly spaced and dimensioned and configured for cooperation with the ribs of the body portion. The ribs of the head assembly and the body portion have the same angular spacing therebetween. The head assembly includes discrete means for holding a cutter insert and means for holding the head assembly on the body portion.

Abstract: A spring actuated, pivoting cutting tool, which is used in conjunction with turning equipment and which at the termination of its cutting stroke automatically lifts the cutting edge off the finished surface to allow the tool to be withdrawn without leaving a return mark, is provided with a spring actuated, slidable shield which substantially covers any gap between the moving parts of the cutting tool, thus reducing the likelihood of chips or other debris from lodging between the moving parts of the tool and preventing its proper operation.

Abstract: A tool holder constituting an adaptive machining control system to automatically manipulate tool rake angle using in-process force feedback. The tool holder includes a rotatable member for holding a cutting member which cuts a workpiece, a motor to rotate the holding member, and a sensor and control logic to sense cutting forces and activate the motor to rotate the holding member and change the tool rake angle. The cutting member is held so that it rotates about an axis through its cutting tip to change the rake angle without varying the depth of cut on the workpiece. In an alternative embodiment, a manually operated tool holder is manipulated to similarly rotate a cutting member to vary the rake angle.

Abstract: The invention is directed to a cutterhead for a portable power planer. The cutterhead includes a cylindrical body having a substantially cylindrical surface and defining a rotational axis about which the cylindrical body rotates during normal operation of the power planer. A solid elongated cutting member is provided and has a channel formed therein to define at least two cutting edges. The cylindrical body has an elongated recess formed therein for holding the cutting member. The recess extends in a direction parallel to the rotational axis of the cutterhead and defines a longitudinal aperture in the surface for accommodating one of the cutting edges. The recess has a recess wall extending inwardly away from the aperture to surround and hold the cutting member against the centrifugal forces acting thereupon during the rotation of the cylindrical body.

Abstract: A tool holder having a cut-out portion in its forward end which is to defined as a generally flat surface for supporting the bottom surface of a tool bit over the entire area of the flat surface and an upstanding side wall for engaging a substantial portion of the side surface of the tool bit. A retaining pin is rockingly mounted on the tool holder with the upper end projecting out of the flat surface and being received of a hole of the tool bit. The lower end portion of the retaining pin is urged laterally with respect to the longitudinal axis of the pin by a tightening screw whereby the tool bit is urged against the upstanding side wall.

Abstract: A rotary cutting tool having a shank and a head at one end of the shank, the head having a flat bed portion. A clamp for carrying a bit is mounted for rotation on the bed portion for angular adjustment of the bit relative to the bed portion. This clamp has a groove in one of its faces, the bit being axially slidable therein to different extended positions, and the groove has a depth less than the thickness of the bit such that the bit projects laterally from the groove for engagement with the bed portion. As the clamp is drawn toward the bed portion, the bit is clamped in the groove against the bed portion in any predetermined adjusted angular and extended position.

Abstract: In cutting tools employing disposable inserts an indexing shoulder is generally provided on the body of the tool. When exposed to excessive force the shoulder may be damaged and the tool difficult to repair. This invention proposes a replaceable seat which is indexed to the tool, and wherein the seat is provided with an shoulder against which the insert is indexed. In the preferred embodiment the insert is provided with a transverse channel in its seating surface and the seal with a mating land. The arrangement provides for forward and reverse indexing of the insert, and is of particular utility in positive rake and tracer cutting tools.

Abstract: A tool holder has a tool bit supporting member for releasably securing a tool bit of hard material thereon, a shank for pivotally mounting the tool bit supporting member at the forward end thereof, and an indexing device for the indexing relative angular position of the shank and the tool bit supporting member.