Intelligent on-off device for self-block electric heating incremental forming heating circuit

A heating circuit and progressive forming technology, applied in metal processing, forming tools, metal processing equipment, etc., to avoid disadvantages and safety hazards, achieve continuity, and good auxiliary effects

Pending Publication Date: 2018-05-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
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  • Intelligent on-off device for self-block electric heating incremental forming heating circuit
  • Intelligent on-off device for self-block electric heating incremental forming heating circuit

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Embodiment Construction

[0012] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0013] Such as figure 1 As shown, the self-resistance electric heating progressive forming heating circuit on-off device consists of wooden blocks (2), veneer boards (3), forming devices (4), processing sheets (5), forming tool heads (7), and metal electrodes (8), metal electrode (10), DC power supply (13), control circuit (15) constitute. The control circuit (15) includes a pressure sensor (6), a transmitter (1), an analog-to-digital conversion module ADC0809 (9), an STC89C52 single-chip microcomputer (11), a relay drive module L298 (14), and a relay switch (12). Take out a groove in the shape of the pressure sensor (6) in the block (2), and punch a hole leading to the outside at the side wall of the groove. Afterwards, put the pressure sensor (6) into the groove in the middle of the wooden block (2), and put the signal output line into the punched hole. The...

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Abstract

The invention discloses an intelligent on-off device for a self-block electric heating incremental forming heating circuit. According to the technical scheme, in order to overcome the defects generated by manually controlling on and off of a heating circuit in the self-block electric heating incremental forming actual machining process, a pressure sensor is adopted for monitoring the contact situation of a forming tool head and a plate in real time, a pressure value signal detected by the pressure sensor in real time is transmitted to a single-chip microcomputer through a transmitter and an analog-digital converter, the single-chip microcomputer judges the magnitude of the real-time pressure value and then controls a relay switch located in the heating circuit, and finally, the effect of automatic on-off of the heating circuit can be achieved. According to the device, the occurrence of the phenomenon that when the heating circuit is connected and disconnected manually by manpower, electric arcs are generated when the tool head approaches to the plate and burns through the formed plate can be effectively avoided, and the effects that the forming tool head is protected, the service life of the forming tool head is prolonged, the machining continuity is guaranteed, and the precision of the formed part is improved are achieved.

Description

technical field [0001] The invention relates to the technical field of sheet material plastic forming, in particular to an intelligent on-off device for a self-resistance electric heating progressive forming heating circuit. Background technique [0002] Incremental forming technology is a new type of dieless forming process, which has the characteristics of high flexibility, short development cycle and low cost under the production mode of small batch and multi-variety. In recent years, the demand for lightweight alloy sheet metal parts in the aerospace sector has been increasing. However, these lightweight alloys have poor plasticity at room temperature and are difficult to form. The progressive forming technology at room temperature is not suitable for the precise forming of such materials. In order to overcome the forming defects of this type of material at room temperature, on the basis of the original progressive forming technology, a self-resistance electric heating m...

Claims

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Application Information

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IPC IPC(8): B21D37/16B21C51/00B21D31/00
CPCB21D37/16B21C51/00B21D31/005
Inventor 鲁世红张春李正芳毛志翔
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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