Abstract: The present invention discloses a method of correcting the shape of a spray-formed article which has a concave bowing relative to the working surface of the article. Specifically, deviations of such articles from a desired predetermined shape are corrected by applying sufficient heat to a non-working surface to permanently remove at least a partial amount of the concave bowing while leaving the working surface substantially unmarred. This process is repeated iteratively until the article achieves the predetermined shape.

Abstract: A three-dimensional stereoscopic diagram creator creates a three-dimensional stereoscopic diagram including a desired bending angle based on graphic information of a product. A major dimension displayer displays a major dimension, tolerance and the like with respect to the three-dimensional stereoscopic diagram. On the other hand, a test piece displayer displays a test piece of the same material proposed for use as the material used for producing the product. The test piece displayer carries out trial bending on the test piece. A bending angle after a bending load is removed is measured by a bending angle measuring device. A spring back amount setter calculates a spring back amount from a difference in bending angle between before and after the load is removed. A stroke calculator calculates a stroke value relative to the desired bending angle considering the obtained spring back amount. Actual bending is performed on a product piece using the calculated stroke value.

Abstract: Fork of the self-centering oscillating type, particularly for the bending angle measuring, in a pressbrake including at least a fork provided along a matrix or a matrix fractioned element, able to detect the real inclination of the two specular planes of a pressed-bent sheet-plate, each having two detection points, one of which is static and known, and the other one is dynamic. The fork including a forked end and a relative shank which interacts with a position transducer, communicating with a data processing logic unit which controls the pressbrake. The fork being hinged in correspondence with the shank top.

Abstract: A numerical control device for a bending machine includes a keyboard, a memory and a processor. The memory stores one or more groups of data, each containing bending conditions, a bend angle and at least one penetration depth. The memory further stores program instructions for searching whether data input with the keyboard is stored in the memory, in a same group of data, and that sends a signal to the bending machine so that the bending machine peforms bending according to the penetration depth included in the group of data. The processor that executes said program instructions.

Abstract: A device for adjusting the clamping pressure in applicators for clamping terminals onto electrical cables comprising a composite pivot interposed between an actuation hammer and a supporting element to which the tools for clamping the terminal respectively onto the insulation and onto the core of the conductor are slidingly coupled in a mutually parallel arrangement; the thrust of the hammer acts on the heads of the tools, and the pivot is rigidly coupled to the hammer or to the supporting element. The pivot has coaxial threaded regions on which respective wheels are engaged. Screwing/unscrewing of the wheels varies axial distance, with respect to the hammer, of either the tools or only of the insulation clamping tool.

Abstract: A presently-preferred die set for bending a workpiece having a marking at a predetermined location thereon comprises a male die having a substantially v-shaped end portion, a female die having a substantially v-shaped groove formed therein, and a sensor mounted on one of the male and female dies. The sensor is responsive to the marking when the marking is located at a predetermined position in relation to the sensor.

Abstract: The present invention provides a bending machine that enables an angle measuring instrument to be compactly built into a mold for accurate processing. The present invention also provides an operation method besed on learning control which achieves accurate bending with this bending machine taking spring back into consideration. A bending machine carries out bending using lineraly extending an upper die 4 and a lower die 2, the upper die 4 having a built-in angle measuring instrument 9. The angle measuring instrument 9 is composed of a corner contacting member 12 with links and an inductive linear position detector 13 for measuring displacement of the corner contacting member 12. In operation for learning, the position of and a load on the upper die 4 and a bend angle are measured during a bending process and a bend angle after spring back is subsequently measured.

Abstract: The invention provides a method and an apparatus for determining the bending angle of a work piece to be bent by means of a bending apparatus comprising a punch member and a die member cooperating with the punch member. The die member is provided with at least two channels through which pressurized air is blown towards a leg of the bent work piece. For measuring the pressure in each of the channels, a plurality of pressure sensing devices is provided and connected to a common control and analyzing assembly. On the basis of the pressure values measured by the pressure sensing devices and with the aid of formulae, tables, three dimensional diagrams or with the aid of a neuronal network, the control and analyzing assembly calculates the bending angle.

Abstract: A support medium is capable of being read by a numerical control system of a bending machine. The support medium stores program instructions for searching, in a memory region storing at least one group of data, each containing bending conditions, a bend angle and at least one penetration depth, whether input data including a desired bend angle and bending conditions are stored in the memory region, in a same group of data. The support medium sends a signal to the bending machine so that the bending machine executes a bending according to the penetration depth included in the same group of data.

Abstract: The numeral control device for a bending machine comprises means for inputting, as input data, a desired bend angle and bending conditions or criteria, means for storing groups of data, each containing bending conditions, a bend angle and a penetration depth, and means for searching whether the input data is stored in the memory means, in the same group of data. Moreover, means are provided for transmitting a signal representative of a penetration depth included in the group of data stored in the memory means, or for transmitting a signal for controlling the bending machine according to this penetration depth.

Abstract: An actual plate thickness and actual material constants are measured during punching before bending. The measured information is reflected on the bending, so that the bending is performed efficiently and accurately. Punching is carried out for each blank developed based on a nominal plate thickness and nominal material constants in blanking before the bending of a work W. Then, an actual plate thickness distribution and an actual material constant distribution of the work W are calculated based on various data containing a ram stroke and a pressure detected in the punching.

Abstract: At a time of executing a bending process of a work according to a cooperation between a punch and a die, a provisional stroke value for obtaining a predetermined angle is determined on the basis of a bending process condition. A test bending process is executed on the basis of the provisional stroke value, and a striking number required for striking the work until the predetermined angle is obtained is judged. Since a stroke value correction amount at a time of a main bending corresponding to the striking number and the predetermined angle is previously determined, a main bending process is executed by correcting to a stroke value at a time of the main bending by computing the corresponding stroke value correction amount on the basis of the stroke value correction amount at a time of the main bending process.

Abstract: A method for calibrating a crimping press for crimping terminals on an electrical conductor. A master tool is positioned in a test crimping press and the press is operated to crimp a test bar to a desired crimp height. During the process of crimping the test bar to the desired crimp height, a standard force profile is generated. The standard force profile is recorded in a control unit. The master tool is transferred to a crimping press to be calibrated. Once the master tool is in place, the crimping press is operated until the crimping press creates a crimp height on the test bar equal to the desired crimp height. During the crimping process that results in the desired crimp height, an actual force profile is determined for the crimping press being calibrated. The actual force profile is compared to the standard force profile and the actual force profile is adjusted by an offset factor such that the adjusted force profile replicates the standard force profile.

Abstract: Integrating device to detect and recover the deformation of shoulders in a press-bending machine, including an optical ruler joined to the beater and reading trolley, pulled back elastically, and stressed by the false shoulder. The device provided for the false shoulder is made up of a rod perpendicular to the beater, which on one side is hinged to the shoulder of the machine, while on the opposite end, oscillating and facing the beater. It is stressed by the arm joined to the reading trolley of the optical ruler, and further in which the rod provides a slider in connection with an underlying plane plate that is part of the false shoulder.

Abstract: A reciprocating press for forming workpieces includes a tilting table that supports the workpiece and positions it with respect to the press tooling as the press closes, and then is pivoted upward into an inclined orientation as the press opens so that the finished workpiece falls down the table and is automatically discharged from the press. A preferred embodiment has a lifting arm attached to an upper reciprocating press member that carries an upper forming tool such as a punch. The lower end of the lifting arm engages the tilting table such that the table is pivoted about a horizontal axis in concert with the upward and downward movement of the reciprocating press member. The press preferably also includes a safety door that is automatically closed before the press fully closes and is opened again as the press opens such that operator access to the moving press parts is prevented by the door during a press cycle.

Abstract: In a method for joining workpieces, in particular press fittings (24) to a pipe (23), the pressing device (1) is placed with its at least two pressing jaws (21, 22) in the open position against the joining point of the workpieces 23, 24), and the pressing jaws (21, 22) are then moved with respect to one another by means of a jaw drive (7, 50), while the workpieces (23, 24) deform plastically, into a terminal pressed position in which, at the latest, the application of power to the press jaws (21, 22) ends. According to the invention, the power of the jaw drive (7, 50) is controlled in such a way that, at least toward the completion of pressing, the pressing jaws (21, 22) have less kinetic energy than without a power controller. The invention further concerns a pressing unit (1) for carrying out said method.

Abstract: This invention relates to an automatic machine to form curved plates (100) of ship's hull-pieces in a shipbuilding process. This automatic machine has the following devices, ajig table (10) to support steel plates, a heating device (21) including a torch to heat one side of steel plates up to the required temperature (about 800 C.), a cooling device to cool down the heated plates by spraying out coolant from several nozzles (32), a measuring device (41) to measure the formed plates set up beside the cooling device. The measuring gauge (41) transmits data to the control system through A/D converter (42). A driving device includes a transverse guide rail (51), a longitudinal guide rail (52), motors, chains and belts, all of which enable the torch, cooler and measuring gauge to move in accordance with commands of the control system.

Abstract: A pressing tool for connecting pipe-shaped work pieces wherein the pressing tool has a fork-shaped receiver and a clamping tool interchangeably held in the receiver by a connecting bolt. The pressing tool has two clamping jaws which can be moved toward each other. A drive motor operates the clamping tool. The connecting bolt can be pushed through bores in the fork-shaped receiver and in the clamping tool, for maintaining the clamping tool in an exchangeable position within the fork-shaped receiver. A contactless electronic tracing device is arranged in the fork-shaped receiver, which determines a relative position of the clamping jaws in relation to the fork-shaped receiver. The contactless electronic tracing device also passes a signal to either an optical warning device or an acoustical warning device.

Abstract: A bending method and bending apparatus directed to avoiding the risk of die breakage and damage to ram coupling parts due to an abnormal condition of a ram drive shaft and directed to achieving high-accuracy bending in which a uniform bend angle can be produced throughout the entire length of a workpiece without forming a boat-formed belly. In a press brake having three or more drive shafts, the deformation amounts of the ram and the table at each shaft-load imposed point are calculated based on input bending process data. A target closest distance between the punch and the die at each shaft-load imposed point is calculated from its corresponding deformation amounts. The difference between the actual bend angle of the workpiece after bending and a target bend angle is obtained at at least three positions, that are, the ends and center of the workpiece. From these differences, a correction amount for the moving amount of the ram at each shaft-load imposed point is obtained.

Abstract: A bend angle correction method directed to carrying out simple and accurate penetration of a movable die into a fixed die to produce a uniform angle throughout the length of a workpiece, being unaffected by material variations. When bending a sheet-like workpiece to a desired angle by the cooperative movement of a movable punch driven by three or more drive shafts and a fixed die disposed in an opposing relationship with the movable die, the bend angle of the workpiece is measured during bending operation and the difference between the measured bend angle and a target angle is obtained, at at least three points which are the ends and center of the workpiece. Based on the differences, correction amounts for the penetration of the movable die are obtained on a shaft-load imposed point basis.