System and method for controlling self-resistive electric heating incremental forming temperature in real time
A real-time control system and progressive forming technology, applied in the direction of temperature control, control/regulation system, non-electric variable control, etc., can solve the problems of long temperature adjustment time, unstable temperature control, etc., achieve good auxiliary effect, eliminate temperature instability Stable, operable effects
Active Publication Date: 2021-02-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology
Therefore, it is absolutely necessary to provide an online temperature control system that can effectively solve the problems of unstable temperature control and long temperature adjustment time in the progressive forming process of self-resistance heating
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0033] Such as figure 1 As shown, the present invention provides a self-resistance electric heating progressive forming temperature real-time control system, including a host computer 1, a temperature control unit...
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The invention provides a system and method for controlling a self-resistive electric heating incremental forming temperature in real time. The control system comprises an upper computer, a temperaturecontrol unit, a forming unit and a direct-current power supply; the upper computer is connected with the temperature control unit; and the temperature control unit, the forming unit and the direct-current power supply are sequentially connected. The control method comprises the following steps: making the upper computer set an initial temperature and calculate effective current on the basis of atemperature prediction model; making the upper computer give a power-up command and control the temperature control unit to collect the forming temperature of the forming unit; making the temperaturecontrol unit conduct signal conversion on a value of the temperature of a forming area; and making the upper computer compare the value of the temperature of the forming area and a value of the presettemperature to obtain a temperature adjustment amount, and making the upper computer control the temperature control unit to adjust current, so as to conduct online temperature control. By means of the system and method for controlling the self-resistive electric heating incremental forming temperature in real time, adverse effects caused by unstable temperatures, excessively-high temperatures and excessively-low temperatures to the product quality can be eliminated, and online fast temperature adjustment and temperature control are achieved, so that the defect of excessively-long adjustmenttime of a traditional control system is overcome.
Description
technical field [0001] The invention relates to the technical field of sheet metal plastic forming, in particular to a real-time control system and method for progressive forming temperature by self-resistance electric heating. Background technique [0002] Self-resistive electric heating progressive forming technology has the advantages of rapid prototyping, moldless forming, fast heating and simple heating device. The demand for rapid prototyping of personalized structural parts of high-performance light alloy materials in the field. Based on the original progressive forming technology, this technology adopts a self-resistance electric heating method that generates a large amount of Joule heat instantly through a large current to process this type of material, which promotes the development of progressive forming technology. The forming manufacture of poor lightweight alloys is of great significance. [0003] At present, the commonly used single-point electric-assisted h...
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IPC IPC(8): B21D31/00G05D23/27
CPCB21D31/005G05D23/27
Inventor 鲁世红薛澄澄高越
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS