Showing papers on "Stamping published in 1973"

Deformable tubular rods with deformable sheet material connectors

Abstract: A model kit of the type described for building a wide variety of different geometric structures in which the struts and hub connectors may be manufactured by relatively simple inexpensive tooling, the struts being hollow tubular members extruded by a plastic extrusion process, and cut to length by any suitable shearing means, and the hub connectors preferably being formed by stamping them out of sheet thermoplastic material, thereby avoiding the necessity for the design and building of expensive injection moulding dies, and at the same time providing a wide range of different parts having a great flexibility in use, and having a long working life and being to all intents and purposes indestructable.

Stator core for rotary electric machines and method of manufacturing the same

Abstract: A stator core for rotary electric machines, which is formed by helically and closely winding a steel strip formed by stamping with equally spaced inner slots defining a plurality of equally spaced tooth portions. The steel strip is also formed with notches each on each side of the stem portion of each tooth portion for the purpose of minimizing the plastic deformation stresses induced at the time of winding it.

Workpiece translation mechanism for transfer die press

Abstract: This invention relates to a workpiece translation mechanism for moving successive workpieces through successive stations of a transfer stamping die. Workpiece engaging mechanisms are provided on a top subframe which is mounted on an intermediate subframe for horizontal motion parallel to the path of the workpieces through the transfer die. The intermediate subframe is mounted on a bottom subframe for horizontal reciprocating movement transverse to the path of the workpieces. The bottom subframe is mounted for relative vertical reciprocating motions with respect to the bed of the transfer press. Appropriate mechanical driving arrangements are provided for both the top and intermediate subframes so that both horizontal movements are respectively accomplished with an harmonic acceleration and deceleration of the respective subframes so that they are at essentially zero velocity when they reach each extreme of their reciprocatory positions. In this manner, the possibility of the workpiece being inaccurately aligned with the station of the transfer stamping die is substantially minimized.

Glass fiber filled polyamide composites

Abstract: Long glass fiber reinforcement allows the use of extremely low molecular weight polymer in a composite which is formable in a mold held at ambient temperatures by preheating the composite sheet outside of the mold. The glass-reinforced, low molecular weight polyamide, per se, may be formed in a conventional metal stamping mold and exhibits excellent performance and good surface properties.

An N-Product, Multi-Machine, Lotsize Scheduling Model

Abstract: In this paper we consider an N-product, multi-machine, lotsize-scheduling problem that was originally encountered in a large automotive metal stamping facility It is shown that the natural constraints of the real-life problem provide a special structure which allows an efficient formulation of the problem as a 0–1 integer program An implicit enumeration algorithm for obtaining numerical solutions is presented Computational experience shows that the algorithm is quite efficient when the number of products does not exceed ten or eleven In the automotive metal stamping facility, that number is rarely exceeded; therefore, it is possible to employ the model as one of the basic tools used by a team responsible for the development of a production planning system

Retention clip for ball and socket joint

Abstract: A retention clip for a ball and socket joint. The retention clip comprises an elongated resilient metal stamping partially surrounding the socket member and having end portions extending laterally inwardly through slots in the side walls of the socket member. The inner edges of the end portions of the stamping terminate within the socket to retain the ball assembled in the socket. The inner edges of the end portions are engaged by the ball when it is inserted into the socket to flex the stamping sufficiently to allow the ball to enter.

Printing or stamping device with type belts

Abstract: An improved stamping or printing device comprising flexible belts with type characters on their outer surfaces. The belts are also provided with projections on their inner surfaces adapted to be driven by setting wheels. The belts run over an abutment for manual pressing of selected type characters on to a sheet of paper or the like. In order to avoid having the inwardly extending projections riding over the abutment and interfering with free belt movement, the projections are arranged on restricted lineal portions of the belts and rotation of the setting wheels is likewise restricted by suitable stop means.

Method of producing articles from sheet-like material

Abstract: A method of producing articles from relatively rigid sheet-like stock material and in a manner whereby stock waste is minimized or eliminated. The articles are blanked or cut out of a strip of stock material (as by means of stamping) with a plurality of slits or cuts formed in the blank defining in part the blank sections that are subsequently bent to define the component parts of the finished article. The exterior periphery of the blanks are defined by smooth flowing curves, and alternate blanks are reversed end to end during the cutting thereof and maintained in juxtaposed interfitted relation with the adjacent blanks, to insure zero or minimum scrap loss in the stock strip. The finished articles are defined by smoothly flowing curved sections of the blank as cut from the strip stock material and bent to the desired configuration.

Indicia stamping mechanism

Abstract: In synchronism with wrapper applying means on a packaging conveyor pneumatically operated ink stampers precisely apply price indicia in prescribed areas of wrapped finished products or packages. The indicia stamping mechanism is characterized by a full range of adjustments to achieve maximum flexibility of operation. The mechanism also possesses simplicity and durability in a self-contained unit with simplified controls.

Setting up arrangement for a combined printing and stamping machine

Abstract: A printing machine, which is normally combined with a stamping machine so that portions of sheets can be printed and stamped out while the printing machine and stamping machine are driven by a common motor and, can be separated from the stamping machine so that during the set up period, the printed sheets are deposited by auxiliary depositing means, while the stamping machine is either at a standstill, or being set up while driven by an other motor. Manual control means operates simultaneously a clutch between the output roller of the printing machine and the input roller of the stamping machine, and a sheet transfer roller which transfers sheets from the output roller to the input roller only when the printing and stamping machines are combined. Preferably, the transfer roller is driven during each revolution by an eccentric transmission at two different speeds corresponding to the peripheral speeds of the output and input rollers.

Process for forming hollow bodies of thermoplastic material

Abstract: A process for stamping blanks of thermoplastic material for use in the formation of hollow bodies in which prior to the stamping operation the blanks are heated in predetermined heated zones to the fusion point of the thermoplastic material with the heated zones being surrounded by zones which remain below fusion temperature and which in the formation of hollow cylindrical bodies, the heated zones are in the form of continuous or interrupted ring segments which are radially interconnected.

Method and apparatus for impressing identifying characters into metal bar stock

Abstract: In one exemplar embodiment, an apparatus for impressing identifying characters into the end face of metal bar stock is disclosed. A stamping apparatus operates in conjunction with conventional bar stock drawing and cutting machines. The stamping apparatus has a die positioning member adapted for pivotal movement carrying a character imprinting die that is extended and locked in the path of the moving bar stock. The force of the bar stock moving against the die imprints the identifying characters in the end face of the bar stock. Just prior to cutting of the bolt blank from the bar stock the cutting machine signals the bolt stamping apparatus and the die positioning member begins to pivot and retract into the apparatus housing thereby relieving the pressure between the end face of the bar stock and the die. The die positioning member continues to pivot into the housing as the cutting machine cuts the bolt blank from the bar stock and allows the bolt blank to fall free for collection. The bar stock is advanced again and the die positioned to repeat the imprinting process on the next bolt blank.

Manufacture of fluidic elements

Abstract: Fluidic elements are formed of pie-shaped segments in which the major ducts are formed in the edge of the pie-shaped segments. The ducts can be formed by milling, coining, stamping or molding, since their depth is normally one-fourth that of their width. The respective segments are assembled into a circular plate and inserted in a suitable containing structure.

Method of rapidly forming hollow objects from reinforced plastic sheeting

Abstract: A method for forming hollow or tubular objects from thermoplastic or thermosetting polymer compositions employing a stamping or rapid forming operation. The plastic objects may optionally be reinforced and/or particulate filled and are formed by stamping around an internal shape using matched external mating mold sections.

Method of producing a metal object with high relief and having a proof finish from powdered metal

Abstract: A method for producing a metal object which comprises a base and an adjacent image area raised in high relief above the base. The method comprises the steps of filling a die recess with a metal powder which will constitute the desired object; compacting the metal powder within the die recess to produce a relief compact; sintering the relief compact according to preferred temperatures and intervals of time; and stamping the sintered compact in a coining press. The metal object formed by this process includes an area raised 0.375 inches or more in relief above the base of the object. In addition, the base of the object has a proof finish.

Die stamping - of thermoplastic material using articulated stretching frame to follow mould shape

Abstract: Thermoplastic material is clamped into an articulated frame and after heating to malleable temp. the mould is raised for the frame to follow the contours of the mould. An upper unit is lowered to clamp the articulated frame into place for the die to stamp the material, the action being assisted by a vaccum in the lower mould. The purpose is to improve the die stamping action, and to prevent neutral fibres in the material from being stretched.

Construction of rotor for rotary mechanisms

Abstract: The rotor comprises a plurality of rotor components produced by stamping and cutting sheet metal material and bonding the rotor components together into a unitary assembly. The regions of the assembly requiring surface hardening and machining are so treated.

Method of making selective switch contacts

Abstract: This invention relates to a switch having four parts including the housing. More particularly the invention relates to a frame which has 16 positions which can be binary coded. The sixteen positions consist of four single pole-double throw contacts all of which are made by stamping and forming a single sheet of metal. The movable contacts are switched from one fixed contact to another by lobes on a rotatable camshaft.

Simultaneous embossing and printing

Abstract: A hot stamping printing press has type dies higher than stamping dies so that more than one print die and stamping die and foil can simultaneously print without interference with each other at a single press stroke.

Deep-drawn containers - from separate foil layers which are re-reeled for further use

Abstract: Designed for yoghurt or other food or drinking containers, typical foils are outer layers of polystyrene with an inner layer of polyethylene, or outer PVC layers with a central polystyrene layer and a printed polyethylene layer. The individual foils are unrolled to pass through collecting rollers for pre-warming and deep-drawing. After stamping out the deep-drawn container, the foils are sepd. and re-reeled for further use to reduce wastage and cut the cost of container mfr.

Dynamoelectric machine rotor assembly device and method

Abstract: A method of operating a single operator, multiple work station system for assembling components onto at least partially completed rotatable assemblies for a dynamoelectric machine. The method comprises removing a first completed rotatable assembly at one station from apparatus for deforming a first fan stamping secured to the rotatable assembly. A second rotatable assembly having a second fan stamping secured thereto is transferred from apparatus for securing the fan stamping at another station, and the second rotatable assembly is disposed on the deforming apparatus. A third rotatable assembly is then placed on the securing apparatus, and a third fan stamping is superposed on an end ring of the third rotatable assembly. The securing, and deforming apparatus are then actuated.

Roll feed mechanism

Abstract: The present disclosure relates to feed mechanisms for stamping presses and similar machines and specifically to an improved roll feed mechanism with a feed stock clamp designed for a fixed feeding increment. The present invention relates to a novel cam roll mechanism with a feed stock clamp to provide incremental feeding of stock to a punch press or the like.

Decorative spheres - of thermoplastic foil in two layers through drawing, welding and stamping

Abstract: Designed to offer an automatic mfrg. process for spherical Christmas tree decorations, two sheets of thermoplastic foil are separated by a PTFE-clad sheet while the upper and lower half-spheres are vacuum drawn. The sheets are separated for the under surfaces to be sprayed with a reflective material, then brought together for high frequency welding, stamping out of the completed spheres with a hanging tab, and the cutting of the waste material in sheets for stacking.

Grooving stamp for sheet metal armature cores - has stepwise adjustment transverse of radial spacing of tool and saddle stick shaft

Abstract: Grooved stamp for production of sheet metal stacks for cone armature motors of given cone angle and stack height has a shaft of metal plates whose radial distance from the stamping tool from plate to plate is adjustable by a stepping drive under program selection. To stamp an oblique groove in a peripheral face of the sheet metal stack, with preset inclination, the shaft and tool are together transversely adjustable to their radial spacing. A stepping drive adjusts the adjustment path transversely from plate to plate corresponding to the groove angle, and is selectively adjustable to at least two fixed, preset step lengths. The selection of one of the step lengths is by a program control, whose program is solely determined by input of the number of plates. Grooves can be simply made in the individual plates in the correct position.

Clean-edged thermoplastic parts - by stamping out from sheets using a heated cutting blade

Abstract: Strip-steel cutting tools are used, which are cheaper and more compact than the usual stamping tool. To cut sheets of any thickness without fibre formation but with clean cuts a blade is used, which is connected to a heat source, e.g., a hot plate. By using a sprung pressure ring a simultaneous stamping out and sealing or welding of the part is possible.

Pressing coin blanks - prior to minting to lengthen life of coining dies

Abstract: Coin blanks are mfd. by punching them out of cold-rolled, pretreated (by annealing, pickling, polishing) strip of material suitable for coins, followed by knurling. Prior to the coin stamping operation, each blank is pre-pressed in the same direction as the subsequent stamping operation.

Auxiliary pneumatic cylinder - frees strip from feed rolls on stamping press

Abstract: An auxiliary pneumatic cylinder is fitted to a stamping press to work against the main cylinder that supplies the pressure to the top feed roll so that, during the stamping stroke, the strip is free of the feed rolls. Backward movement of the strip is prevented by pinch rolls placed in the line before the feed rolls. The cylinder is simple to arrange and can be automatically operated.

Blanks for mechanical working - mounted on metal string at fixed intervals

Abstract: Metal shapes for further mechanical working are held together on a metal "string" at fixed intervals. The working may be a forging, rolling, pressing, drawing, or stamping operation and may be an intermediate or a finishing operation.

Apparatus for the roller stamping of thin sheets, especially starting sheets for electrolytic production of copper

Abstract: Apparatus for the roller stamping of thin sheets, especially starting sheets for electrolytic production of copper One or more endless bands are disposed for advancing the sheet between the stamping rollers when the sheet is to be stamped When plural bands are used, they are alternately radially offset

Die holder with stamping die means

Abstract: A stamping die holder comprises a tube of noncircular e.g., square cross-section, having die receiving transverse openings at one end, a clamp of correlative non-circular cross-section slidable in the tube adjacent the die openings for holding a die means in the openings, a screw engaging a thread on the clamp to move the clamp to and from die engaging position, the head of the screw being captured between two apertured plates held in the tube, the screw extending through the aperture in one plate and the aperture in the other plate providing access for a socket wrench to engage a socket in the screw head to turn the screw and move the clamp. The clamp has a hard rubber face providing enough resiliency to maintain tightness while at the same time preventing wobble of the die means. Hammer actuated stamping dies carrying letter or other metal marking indicia may be held in the holder, e.g., dies for identification of inspected welded material.