Abstract: A CNC milling machine and broaching tool for forming a magazine well in a firearm lower receiver, the magazine well having a forward end and a rearward end with a plurality of corners in the forward end and a plurality of corners in the rearward end. The CNC milling machine and broaching tool including a CNC milling machine for shaping a blank into a lower receiver having a guide hole with a length and a width and a broaching tool having a length less than the length of the guide hole and a width less than the width of the guide hole. The broaching tool having a single cutting edge for each of the plurality of corners in the forward end and the plurality of corners in the rearward end.

Abstract: A material support tool used for routers for allowing pieces of wood to be cut accurately and safely. The material support tool used for routers includes a base member having a hole centrally disposed therethrough and being adapted to receive a router bit therethrough; and also includes a first material support assembly being mounted upon a top of the base member; and further includes a second material support assembly also being mounted upon the top of the base member and being spaced from the first material support assembly, and in combination with the first material support assembly being adapted to support a piece of wood therebetween.

Abstract: A machine for machining slots within a bore of a sleeve includes a work holding device, and at least one cutting tool mounted on a cutting spindle. An axis of the cutting spindle is offset from and at substantially right angles to the axis of the sleeve. A device supports the cutting spindle for angular reciprocation to effect cutting strokes of the cutting tool relative to the surface of the bore.

Abstract: A slotting apparatus has a slotting tool for producing a slot of a substantially arcuate cross section axially in an inner circumferential surface of a tubular workpiece held in position. When the slotting tool moves in one direction axially in the tubular workpiece, it follows an arcuate path by moving progressively toward and away from the inner circumferential surface of the tubular workpiece. The slotting tool cuts off the inner circumferential surface of the tubular workpiece, forming an arcuate slot therein. When the slotting tool moves back, it is spaced from the slotted surface region of the workpiece, and travels along a straight path back to its starting position. The slotting tool is supported on a tool support angularly movably supported by first and second link arms in a casing.

Abstract: A machine for machining blind-ended slots longitudinally disposed within the bore of a sleeve (1) held in a chuck (4) in a work holding spindle (5) indexable about a rotational axis, a reciprocable cutting tool (2) mounted on a cutting spindle (12) the axis of which is offset from and at right angles to the rotational axis of the work holding spindle (5) in which the cutting tool (2) executes a succession of progressively deeper cutting and subsequent return strokes so that a number of blind-ended slots are machined in the sleeve (1) characterized in the provision of a slidable support (6) for the work holding spindle (5) to slide the work holding spindle (5) axially relative to the cutting spindle (12) a distance such that the cutting tool is radially and axially clear of the bore when all slots are machined, cutting strokes of the cutter being discontinued.

Abstract: Apparatus for forming an array of elongate slots in the bore of a valve sleeve (1) where the slots are cut in the bore by an arcuately movable cutting tool (5) mounted on the apparatus and the movement of the cutting tool (5) to form the length and depth of each slot is under the control of a desmodromic cam (12, 13) and a variable offset between the pivotal axis (8) of the cutting tool (95) and the pivotal axis (10) of the followers (15, 16) contacting the cam (12, 13).

Abstract: In order to obtain a desired course of a machining line differing from a straight line or a corresponding flank line of a workpiece profile, it is necessary to control the working point of the tool 2 so that on the rectilinear stroke movement of the tool 2, a movement extending transversely thereto is effected by a tool positioning device 4. Such a device is constructed in the form of a toggle mechanism on which further fine control movements can be imposed through a series of adjustment possibilities.

Abstract: A machine for machining arcuate bottomed blind ended slots longitudinally within the bore of a sleeve member which has a cutting tool mounted for angular reciprocation so as to execute a succession of alternate cutting and retraction strokes in relation to a sleeve member gripped in a work carrier of the machine, the machine being provided with means including a pair of cams each having a cam follower that are arranged to impart to either the cutting tool or the sleeve member a motion such that during each retraction stroke of the cutting tool one cam produces relative movement of the tool and the sleeve away from and towards each other while the second cam produces a progressive relative movement of the tool and the sleeve towards each other during each successive stroke whereby an arcuate bottomed blind ended slot is progressively machined in the sleeve.