Abstract: An apparatus for making a hole and a collar in the side of a pipe has a pipe-fastening portion mounted on a stand for holding the pipe and has a hole-making portion for making the hole in the pipe during movement in a first direction. There is also a collaring portion for collaring the edges of the hole during movement in a second direction. The hole-making portion and the collaring portion are mounted on the stand and rotated to produce the desired working action. A variable-speed feeder mounted between the stand and the hole-making and collaring portion effects relative vertical displacement between the stand and pipe-fastening portion and the hole-making and collaring portions. The feeder has a cam element for controlling the rate and extent of the vertical displacement and thereby the movement of the hole-making and collaring portions relative to the pipe.

Abstract: A flow drill having a cross sectional contour defined by a complex harmonic curve symmetrical in the rotation direction permitting reverse of drill rotation.

Abstract: A pipe coupling, which renders it possible to connect branch pipes (24) to a feed-pipe (1) without requiring the flow in the feed-pipe to be shut off. In a cylindrical guide passageway (5) of one of two coupling parts (2a,2b) embracing the feed-pipe a piston (4) is located, which is provided with a passageway (10) for fluid connection between the feed-pipe and the branch pipe. The piston is provided with an internal knife (9) which upon rotation of the piston cuts up material out of the feed pipe to form the opening to the passageway and projects the cut-up material into the guide passageway (5) to assist in anchoring the coupling in place.

Abstract: A flow drilling tool including a blunt-ended prepunch portion for punching a circular slug from the workpiece as the tool is rotated and moved axially with respect to the workpiece. Thereafter, a circular forming portion is rotated in contact with the workpiece to increase the length and diameter of the punched hole. The prepunch permits formation of a rimmed hole in a single step by eliminating predrilling. Variations and irregularities in the length and thickness of the rim portion surrounding the hole are reduced, and ragged tapered surfaces on the rim portion are eliminated. The axial location of the hole relative to the workpiece is controlled by adjusting the speed of rotation of the tool and the axial pressure of the tool against the workpiece, and by preheating the workpiece.

Abstract: Flange forming drill apparatus for producing a flanged hole in a workpiece such as the side of a pipe or the like includes a body supporting a rotating drill rod and legs for supporting the body to move toward and away from the workpiece. A drill bit is provided at the end of the drill rod for drilling a hole upon movement of the body towards the workpiece along the support legs and a plurality of flange forming members are mounted on an end portion of the drill rod for movement between a retracted position while the hole is drilled and an outwardly projecting position for forming a flange around the edge of the hole when the body is moved away from the workpiece. An adjustment member on the drill rod is provided for moving the flange forming members between retracted and extended positions and brake bits are mounted on the legs for engagement by the adjustment member for extending the flange forming members when the hole is completed.

Abstract: A flange forming drill means for drilling a hole through the side of a pipe or the like and forming a hole encircling flange includes a drill rod mountable on a rotating power source with a drill bit at the lower end and associated retractable flange forming members which are extendable down below the edges of a drilled hole by turning an adjustment cone mounted on the drill rod. The adjustment cone is enclosed and keyed to an externally smooth, protective shield selectively securable to a locking ring on the drill at a plurality of relative angular positions around the drilling axis.

Abstract: A method useful for forming in a curved surface, an enlarged hole surrounded by an upturned flange whose unattached edge lies substantially in a common plane, uses a drill rod, a set of bits, and a mechanism for forming an upturned flange. A first bit attached to the lower end of the rod forms an initial hole. A second bit, spaced axially along the rod, forms a widened oval hole with tapered sides upon continued axial and rotary movement of the rod relative to the workpiece. A flange forming mechanism is then extended beneath the edge region of the hole and pulled through the hole while rotating, to form the upturned flange. A third bit mounted peripherally with respect to the second bit is used to smooth and level the flange edge and to provide it with a desired shape.

Abstract: An apparatus for the machining of cylindrical surfaces on metal-cutting lathes. The apparatus has a housing, a toolholder with tools and a head with deforming rollers. The toolholder is provided with an opening through which the work passes, and the tools are clamped in the toolholder so that their points are opposite each other. The housing is topped by guides secured in a plane at right angles to the direction of longitudinal feed with provision for rotation during setting-up, and the toolholder is fitted to the guides with provision for floating in the course of machining.

Abstract: A contrivance for the machining of cylindrical surfaces on metal-cutting lathes in a housing whereof there are contained a tool head with at least one tool, a head with deforming rollers, and a system for feeding coolant-lubricant to the tool and deforming rollers. The system for feeding coolant-lubricant incorporates a chamber which is located inside the housing between the tool head and the head with deforming rollers, communicates with a source of coolant-lubricant, and is also connected to the tool head with deforming rollers through at least one nozzle arranged so that the jet issuing therefrom is aimed at the cutting edge of the tool.

Abstract: An apparatus useful for forming in a curved surface, an enlarged hole surrounded by an upturned flange whose unattached edge lies substantially in a common plane, uses a drill rod, a set of bits, and a mechanism for forming an upturned flange. A first bit attached to the lower end of the rod forms an initial hole. A second bit, spaced axially along the rod, forms a widened oval hole with tapered sides upon continued axial and rotary movement of the rod relative to the workpiece. A flange forming mechanism is then extended beneath the edge region of the hole and pulled through the hole while rotating, to form the upturned flange. A third bit mounted peripherally with respect to the second bit is used to smooth and level the flange edge and to provide it with a desired shape.

Abstract: Method for manufacturing a vehicle wheel from a light alloy sheet in which the edge of the sheet is split in the radial direction for making two rings which are shaped to obtain a runway for the wheel.

Abstract: An apparatus for the machining of cylindrical surfaces on machine tools comprising headstock and tailstock centers to support the work placed therebetween, a tool head, and a head with deforming rollers spaced equidistantly apart in a circumferential direction. The heads are consecutively arranged in a housing fitted to the carriage of a machine tool. A portion of the tailstock center that, in operation, is face to face with the work serves as the guide for the deforming rollers and has a diameter virtually equal to the diameter at which the deforming rollers are set. Its end next to the work is adapted to accommodate the point of the tool in a position preparatory to machining.

Abstract: A method and tooling for making angle ring flanges from relatively light gauge sheet metal. The method starts with a flat strip of sheet metal from which two angle ring flanges are formed. The strip is rolled and butt welded into a band, the butt weld is broached on both surfaces at the weld line to the thickness of the sheet metal band. The band is placed in a roll forming machine between a set of two forming rolls which rotate and merge to rotate the band and form it into a ring of channel section with outward facing channel legs at 90.degree. to the channel base. One roll is male and pushes the center half of the band down into the female roll and the outer quarters of the band are forced into the clearance between the male and female forming rolls to form the standing legs or flanges of the finished channel section. The male roll has an annular central groove and the female roll includes a shearing cutter disc which is complementary to the annular groove.

Abstract: The flame-cut sheet metal elements to be deburred have a surface which lies substantially in a plane and have edge portions which are formed with sharp-edged metallic burrs extending generally in said plane and carry slag beads which protrude from said surface. Tool means are caused to perform a gyratory motion parallel to said plane and while performing said motion are engaged with said slag beads to break them off. Said tool means are caused to engage also said metallic burrs while performing a gyratory motion parallel to said plane, whereby said burrs are impact-deformed.

Abstract: An elongated housing 10 has a positioning rod 13 located therein, slidable with respect to the housing. A guide rod 14 slides parallel to the positioning rod. The guide rod and the positioning rod are coupled together by end elements 38, 39. The housing 10 is formed with recesses or bores 11, 12 for the positioning rods 13, 14 and additionally is formed with bores to transfer energy at power level for subsequent positioning or operating units, as well as to permit transfer of control signals. The positioning rod can be operated by fluid pressure by coupling a piston, slidable within its operating space and forming a cylinder, or by an electrical rack-and-pinion or worm screw drive. The unit is compact and closed towards the outside, suitable for modular association with similar or other units, and devoid of external flexible hoses or cables interfering with access thereto.

Abstract: The invention relates to methods and apparatus for making rings from tube stock (10) by a part-off rolling tool (12,15) which is advanced radially into the tube stock to form successive rings, e.g. annular blanks for subsequent roll forming into bearing rings. The tube stock is indexed forward after separation of each ring. Errors in the length of tube stock indexed forward each time are contained by forming a locating groove (47) on the tube stock by means of a groove-rolling tool (40) set at an appropriate axial distance from the part-off rolling tool (12) and moved radially with it. In the next cycle the groove (47) automatically centers the part-off tool as the latter begins its advance into the tube stock, so as to give the correct axial length of the finished ring. The part-off tool is stopped before fully penetrating the tube wall, which is then machined. Final separation takes place during this machining or in a subsequent finishing pass by the part-off tool.

Abstract: A tool for bevelling and deburring gears comprising a deburring tool having profiled teeth which are straight with a taper decreasing from the periphery towards the center and a pair of deburring discs operatively connected to the toothed member.

Abstract: A method of manufacturing a heat-transfer wall for vapor condensation comprising the step of forming on the heat-transfer surface, a number of shallow grooves substantially in parallel at a fine pitch, and then forming, on the heat-transfer surface and in the direction across said shallow grooves, a number of grooves deeper than the shallow grooves at a fine pitch by cutting and turning up the heat-transfer surface in the plowing manner. Said method may further comprise a subsequent step of curling the edges of the ridges formed in the above-mentioned step into said deep grooves.

Abstract: There is disclosed apparatus for the discharge of unworkable waste bar ends adapted for use in the cross wedge rolling process to make possible a mechanized or automated production cycle. The disclosed apparatus comprises a guide connected to a swingable element controlled by a sensor and actuated by a motor, a channel for unworkable waste ends being arranged opposite the swingable element.

Abstract: A rotary piercing tool for forming, in a metal plate or the wall of a metal tube, by pressure and friction-generated heat a bossed hole, said tool comprising a tapered active end portion at one end, a shank for its attachment in a chuck of a machine tool at the other end and a coaxial cavity extending from the free end of said shank to a place at a given distance from the free end of said active end portion.

Abstract: A rapidly rotatable piercing tool for forming, substantially by frictional heat and pressure, a bossed hole in a metal plate or tube wall, said tool comprising a head of greater diameter, whereby a shoulder facing the leading end of the tool is formed for so shaping one of the end faces of the boss surrounding the hole, as to round off, to bevel off or to deepen said end face towards the hole in an annular region bordering the hole.

Abstract: A method of and an apparatus for forming by frictional heat and pressure a bossed hole in a metal plate or a tube wall with the aid of a rapidly rotating piercing tool, of which the axial feed is controlled, in such a manner, that during a predetermined time from the point of time, at which the tool comes into contact with the plate or tube wall the axial movement of the tool is slower and after that time said movement is faster than a movement of given speed.

Abstract: This invention concerns finned tubes for use in heat exchanging whereby the fins have a generally T or Y shape. There is disclosed process and apparatus for making these Y and T-finned tubes whereby a smooth tube is subjected to a rolling process with notching rollers being arranged between rolling discs. Bending rollers can be used to form Y fins and, if desired these can be subsequently flattened into T-fins.

Abstract: A method for forming collared holes in a workpiece. The tool has a drill formed at one end thereof for forming a hole in the workpiece. Immediately adjacent and contiguous to the drill is a tapered configured portion which is extendable into the hole formed by the drill. Rotation of the tool causes a collar to form around the hole as the tapered portion of the tool is rotated and forced into the hole. The tool has a constant diametered rod configured portion to straighten and polish the inside surface of the collar formed around the hole in the workpiece. The method of forming the collared hole in a workpiece includes the steps of forming the hole in the workpiece, inserting the tapered tool into the hole so as to contact the tapered tool against the circumference of the hole. The tool is then rotated and the tapered portion is forced further through the hole so as to form the collar integral with the workpiece and surrounding the hole while protruding from opposite sides of the workpiece.

Abstract: An improved forming roll for forming cylindrical metal slugs from cylindrical rod stock is characterized in that the roll has a helical groove defined by a rib the radial height of which and the axial dimension of which increase along the length of the roll, the groove between successive helices of the rib having a cylindrical base the axial length of which is so dimensioned that the volume of metal enclosed by the groove, in use, is substantially constant.There is also described a novel method for making such a forming roll.

Abstract: Metal strip is peeled from a rotating cylindrical workpiece whose longitudinal axis is greater than the desired strip width by feeding a first cutting tool into the peripheral surface of the workpiece as it rotates so as to form a groove in the surface which is spaced through one end of the workpiece by a distance equal to the desired strip width, feeding a second cutting tool continuously into the peripheral surface of the workpiece to produce a continuous metal strip of width equal to the distance between the workpiece end and the groove and collecting the peeled strip by winding it around a coiler.

Abstract: A machine for spinning tubular workpieces comprises a bed which mounts a spindle with a forming tool adapted for spinning a heated tubular workpiece and associated with a drive. There is provided a device for clamping the tubular workpiece, stationary mounted on the bed and arranged ahead of and coaxially with the spindle on the side thereof along which the tubular workpiece is fed thereinto, and a mechanism for feeding the tubular workpiece into the spindle, rigidly affixed on the bed ahead of the clamping device for gripping the tubular workpiece. The spindle of the machine for spinning tubular workpieces is made as a combination of a main sleeve and an auxiliary one with the bore axis of said main sleeve being somewhat offset with respect to the longitudinal axis of said main sleeve, whereas the auxiliary sleeve is turnably mounted within the aforesaid main sleeve and coaxially with its bore, the rotation speed of the auxiliary sleeve being slightly different from that of the main sleeve.

Abstract: This method is particularly suited for practice on a multiple spindle screw machine in which each work spindle carries a length of bar stock. The work end of each bar is formed, sized and drilled in a conventional manner to form thereon a wheel shaped workpiece which is then rotated between two thread dies to form diagonal grooves in its periphery. The work is then subjected to two successive broaching operations which cut grooves transversely of the lands formed by the threading dies. When the work has entered the bore of the second broaching tool, the tool is rotated slightly relative to the work to upset the teeth so that their sharp cutting edges are caused to face outwardly.

Abstract: Cutter dies for cross rolling machines, each of which dies consisting of a shaping surface and a finishing surface, the width of the shaping surface being increasingly smaller and its height larger towards the end portions of the shaping surface, characterized in that the width of the shaping surface is further increased in the end portions of the cutter dies from a preferred position in an angle substantially less than 15.degree. from the end portions of the cutter dies.

Abstract: A rapidly rotatable piercing tool of hard material for forming by frictional heat and pressure a hole surrounded by a boss in a metal plate or the wall of a metal pipe, the pipe part for making the hole to size having basically triangular cross sectional areas the contour line of which has three outwardly curved legs of a shape to make the piercing tool expecially adapted to forcing bossed holes both in ductile and in hard metals.

Abstract: A process and apparatus for rollingly forming a cylindrical member having a reduced diameter portion at its intermediate portion by using a cross-rolling forming apparatus. The width in cross-section each of the dies in the rolls of the apparatus is gradually varied or decreased as the working of the member advances by providing clearance surfaces in the beveled side surfaces of the dies at an appropriate escape angle so that the surfaces in the member which have been worked by the dies are held clear of the side surfaces of the dies.

Abstract: An apparatus for trimming uneven edges from drawn and ironed metal bodies, such as cans, and breaking, knurling and discarding the scrap ring. The apparatus has oppositely rotating parallel shafts, one having an axially rigid supporting member, cutter and knurling roller at a free end on which a can is supported and the other having an axially rigid rotating wheel with a blade and knurling member peripherally mounted on adjacent sectors thereof. The blade cooperates with the edge of the cutter which is remote from the free end to trim the edge and the knurling member cooperates with the knurling roller. The members mounted on the first shaft and the teeth of the knurling member are configured to provide superior, relatively trouble-free operation.