Abstract: An improved design for a band saw comprises a four wheeled blade guide with a pivotal spring-biased tensioning means and an emergency cut off switch that is actuated upon blade breakage.A band saw comprising of pivot mounted frame as to achieve a parallel swinging motion. Said frame having affixed in a precise position a power isolating assembly. An improvement for compactness and relatively cheaper to manufacture.

Abstract: A numerically controlled (NC) machine tool has apparatus for automatically positioning and feeding a cutting tool to follow a programmably predetermined path. Sensing devices are provided to detect when the cutting tool suffers an abnormality, such as becoming dull or chipped. The feed devices of the NC machine tool are then commanded, by an arithmetic unit having a memory and by an NC command generating unit, to automatically retreat the cutting tool. It retreats, without interference with the workpiece, to a first position, parametrically determined by the shape and size of the workpiece, cutting tool data for the abnormality, completion and tool exchange positions, and by the nature of the machining operation. This retreat location is a position at which the cutting tool may be replaced. After replacement of the cutting tool, the cutting tool is automatically returned, via the first position, to a second position from which the machining is resumed.

Abstract: A method and apparatus for controlling the cutting feed of band saw machines for obtaining an optimum feed rate with the same safety against straying of the saw cut, according to which the saw band is maintained continuously within the area of its teeth under a residual tensile stress (.sigma..sub.Z.sbsb.Res) adjusted at least approximately to a constant value. For this purpose, a desired value is selected for the residual tensile stress, determined experimentally under practical conditions, which is correspondingly converted in case of load conditions of the saw blade deviating from the experiment, and this desired value is compared with the actual value. The actual value (.sigma..sub.Z.sbsb.Res) is derived as a difference from the tensile stress (Z) in the critical saw band point and the bending stress .sigma..sub.B caused by the feed, to be .sigma..sub.Z.sbsb.Res =.sigma.Z-.sigma.B>0.

Abstract: An improved interposer punch apparatus including a plurality of elongated punch elements, a head slidably supporting the punch elements, means to urge the punch elements in an extended position, a stripper plate, and a base for supporting a substrate to be punched with apertures for receiving the lower ends of the punch elements, the imrovement being a means in said base for forcibly displacing slugs of material punched from a substrate from the ends of the punch elements following a punching operation.

Abstract: An automatic fault detection system for use with machine tools to detect the breakage or absence of the tool, the presence and/or absence of a portion of the workpiece, and to prevent the normal cycle of operation of the machine when such condition exists, includes a sensor having a rod, a power port and a pair of pressure sensing ports. First and second pressure sensing switches are connected to the sensing ports wherein the failure of the sensor rod to fully retract or to advance before or beyond good check stroke position respectively exhausts the pressure sensing switches preventing operation of the machine cycle.

Abstract: A method of producing a stator yoke of a motor such as an inner rotor type stepper motor, the yoke having a multiplicity of polar teeth. The method has the steps of forming an intermediate blank which has an outer cylindrical portion and an inner cylindrical portion projecting in the same direction, effecting a shearing on the outer peripheral surface of the inner cylindrical portion to cut out a multiplicity of polar teeth arranged at a constant pitch, and effecting a punching to deepen and widen portions between the bases of adjacent polar teeth.

Abstract: An apparatus for detecting lateral deviations of a bandsaw blade has a follower which is in contact with and follows lateral movement of the blade. A sensing circuit, which is connected to the follower, generates deviation signals representing movement of the follower. A control circuit which is responsive to the deviation signals stops the bandsaw when the lateral movement of the blade has deviated beyond established limits.

Abstract: A deviation detecting apparatus for a bandsaw blade in a bandsaw machine has an arm pivotally mounted at a location adjacent to the linear path of travel of the blade through the cutting zone. The arm is yieldably urged into slidable contact with one side of the blade, and is thus pivotally movable in response to lateral deviations of the blade. A control device is responsive to pivotal movement of the arm. The control device generates a control signal indicative of blade deviations.

Abstract: The present invention relates to a method and apparatus for producing a smooth edge blank from stock material. A blanking die is carried by the movable die shoe and a closely cooperating blanking punch is secured on the fixed die shoe. Spring biassed means is displaceably provided within the blanking die to apply pressure on a sheet of stock located on the punch only over the area to be blanked out from said sheet of stock. A piercing punch may also be provided and extends coaxially through the blanking die and a bore extending through the blanking punch provides a piercing die. The spring biassed means for applying pressure to clamp the stock only over the area to be blanked is a shedder displaceably disposed within the bore of the blanking die. A stripper encircling the blanking punch is provided for removing scrap stock upon completion of the blanking step and a spacer means is disposed to space the blanking die and the stripper apart by a distance exceeding the thickness of the stock.

Abstract: The invention relates to a method and apparatus which is intended to equip a support substrate with integrated circuit devices of different kinds mounted originally on films. The apparatus includes a machine having cutting heads each associated with the film, and soldering heads. The substrate is mounted on a plate which is movable on a table in a direction perpendicular to the movement of the table, which movement takes place on a threaded spindle drive by a motor. The operation of the machine is monitored and controlled by a unit such as a computer. The invention is applicable in particular to mounting such devices on substrates intended for data-processing assemblies.

Abstract: The invention relates to a method and apparatus which is intended to equip a support substrate with integrated circuit devices of different kinds mounted originally on films. The apparatus includes a machine having cutting heads each associated with the film, and soldering heads. The substrate is mounted on a plate which is movable on a table in a direction perpendicular to the movement of the table, which movement takes place on a threaded spindle drive by a motor. The operation of the machine is monitored and controlled by a unit such as a computer. The invention is applicable in particular to mounting such devices on substrates intended for data-processing assemblies.

Abstract: The present invention relates to an apparatus for detecting mis-strippings in a press having a ram and upper and lower tools for punching workpieces. The apparatus comprises an electric circuit which is closed when the ram and the upper tool are in contact with each other. A relay is provided in the electric circuit and is actuated when the ram and the upper tool are brought out of contact with each other when the ram is returning from a bottom dead-center position to a top dead-center position. Also, a contact in the relay is connected with a main circuit for driving the press.

Abstract: A safety system for the drive of a cross cutter for a web of material, having an electrical or mechanical synchronizing system between the drives of the feed and cutting mechanism which is adjustable for the size of the piece to be cut and which consists of an adjustable asymmetrical mechanism and has speed control associated with the drive of the feed mechanism to limit the speed of the feed means on the basis of a signal corresponding to the setting of the asymmetrical mechanism. A function generator generates a signal to be applied to the speed control which is directly dependent thereon to define the speed value for the drive of the feed mechanism and wherein the function generator is responsive to the asymmetrical mechanism for size-related, maximum permissible web velocity.

Abstract: A method of cutting sheet material with an automatically controlled cutting machine having a reciprocating cutting blade utilizes a schedule of auxiliary or supplemental machine motions to modify the basic or fundamental motions of a cutting blade and the sheet material under selected cutting conditions. The supplemental motions and corresponding conditions are determined in advance by means of cutting improvement tests and are recorded in a schedule correlating the motions and corresponding conditions. During subsequent cutting operations, the special motions are selectively extracted from the schedule as the corresponding cutting conditions arise, and the motions are then employed to improve the overall cutting process.

Abstract: An arrangement for severing webs, particularly fabrics, of thermally severable materials includes a severing tool which is mounted on a support for displacement between an extended position and a retracted position thereof, being urged towards its extended position. The severing tool has a severing portion which is heated and which contacts and severs the web during the movement of the latter longitudinally of itself in a path past the support for the severing tool. A heat-conductive member is in heat-transmitting contact with the severing tool at the severing portion thereof in the extended position of the severing tool, the heat-transmitting relationship being interrupted when the resistance of the web to the severing action of the severing portion achieves such a value that the severing tool is displaced from its extended position toward its retracted position.

Abstract: An emergency system for stopping the endless band blade reeved around a plurality of pulleys rotatably mounted on the base of a cutting apparatus. The system has a bearing rotatably mounted on the base and held in contact with the band blade at all times and an amplifier electrically connected to the band blade by the bearing. When the human body comes into contact with the band blade, the electric charge potantial of the body is amplified by the amplifier and energizes relays which interrupt the current supply to the motor for driving the band blade and, at the same time, actuate an electromagnetic brake and an electromagnetic clamp brake to brake the pulley coupled to the motor and the band blade to immediately stop the band blade.

Abstract: A closed hydraulic system for band saws transmits manually actuated control of the saw blade tension, provides for easy and remote reading of blade tension, instantly stops rotation of the upper saw blade wheel in case of blade breakage, shuts off the motor drive when blade breakage occurs, and prevents restarting of the motor until a new blade is installed and tension is applied thereto. The upper idler blade band wheel is equipped with a spring loaded brake held in a non-braking position by hydraulic fluid which is pressurized from a manually actuated crank which shifts the upper wheel to apply tension to the saw blade band and when the band breaks to release the tension, the fluid pressure drops sufficiently to allow the springs to actuate the brake for stopping the wheel. At the same time, a fluid pressure actuated switch in the electric circuit for the driving motor is opened to prevent restarting of the motor until tension is once again applied to a new saw band.

Abstract: The disclosure relates to a cutting machine and more particularly to a cutting machine for cutting off short lengths of elongated material such as circular in cross section wire-like or tubular elements and more particularly to material commonly known as liquid silver which is small diameter tubular silver elements used to make necklaces or the like. The machine comprises a means for feeding intermittently a plurality of elongated work pieces in parallel relationship to each other and for sequencially and intermittently operating a circular saw which moves laterally relative to the work pieces and cuts off short lengths thereof. The machine comprises means for automatically sequencing the feed means and the cut-off means in timed relation to each other and such that, as for example, as many as 30,000 to 70,000 pieces may be cut in 1 hour's time.

Abstract: An elongated continuous steel round bar is cut to a specified length, and the cut piece is pressed by forging machine to form a workpiece including an annular portion and a smaller annular portion concentrically integrally projecting therefrom. An outer ring and an inner ring are simultaneously produced from the workpiece by an apparatus comprising an inner ring die and an outer ring die mounted on a stationary base, and an inner ring punch and outer ring punch opposing the dies and mounted on a movable ram. The inner and outer ring punches simultaneously punch out the inner and outer rings from the workpiece fitted to the inner and outer dies. In relation to this operation, a cam operates to depress a rolling member disposed in the rear of hollow portion of the inner ring die, whereby the foremost of like finished inner rings each pushed into the hollow portion of the inner ring die at every stroke of the ram is allowed to drop through the die assembly and is thereby automatically withdrawn.