Electromagnetic clamp

Abstract

The invention provides an electromagnetic clamp which comprises a base, guide rail supports, electromagnetic pedestals, coils, electromagnetic press blocks, an alternating current power source, a monitoring module and an electric wire. Arc guide rails are arranged at the two ends of the base. The arc guide rails are connected with the guide rail supports on the left side and the right side correspondingly. The guide rail supports are connected with the electromagnetic pedestals through sliding guide rails. The electromagnetic press blocks are arranged above the electromagnetic pedestals. The two coils are arranged between the electromagnetic pedestals. The coils are connected with the alternating current power source through the electric wire. The electric wire is further connected with the monitoring module. According to the electromagnetic clamp, the phenomena of bending, turnover and the like generated during machining of a soft plate can be avoided, and machining is facilitated; universal clamping and locating of multiple specifications of plates, right-soft combined plates and the like are achieved; and pressure during clamping can be quantized, different pressures are adoptedfor different plates, real-time monitoring is achieved, and plate integrity is protected against damage.

Description

technical field [0001] The invention belongs to the technical field of PCB processing, and in particular relates to an electromagnetic clamp. Background technique [0002] As one of the key technologies restricting the development of aerospace and precision instruments, micro-nano processing is one of the important research directions in the manufacturing industry in recent years. Processing methods mainly include machinery, laser, plasma etching, etc., and processing materials mainly include hard and brittle materials, flexible materials, rigid-flexible materials, etc. [0003] The design of the fixture is a technology derived with the development of the manufacturing industry. In the field of micro-nano processing of plates, in order to maintain the dimensional accuracy and position accuracy of the plates during processing, it is necessary to use appropriate methods for fixing. For example, the patent ZL201410234931.8 discloses a PCB fixture, which can not only clamp the ...

AI Technical Summary

Problems solved by technology

For example, the patent ZL201410234931.8 discloses a PCB fixture, which can not only clamp the PCB well, but also realize the rapid switching of the horizontal and vertical positions of the PCB, satisfying the processing of different deflection angles of the PCB, but its existence has a negative impact on the clamped PCB. Due to the limitation of PCB size and the inability to control the clamping force, it is impossible to realize different sizes and types of PCB clamping, so as to protect the PCB from damage during the clamping process.

Patent ZL201410520412.8 also discloses a PCB fixture, which can adjust the fixture according to the size of the PCB board, which is convenient for fixing PCBs of different sizes. However, the deflection angle of the PCB cannot be adjusted, and it is not suitable for the clamping of PCB soft boards. And the processing of structures such as through holes and other shortcomings

[0004] The function of the fixture in the process of plate processing is mainly used to fix the plate to assist in the smooth processing. Due to the characteristics of different plates and processing requirements, in addition to the basic clamping function, there are different requirements for the fixture: For hard plate materials, When using fixtures to fix, it is necessary to ensure that the integrity of the board is not damaged under the condition of ensuring normal processing; for soft board materials, in addition to the same requirements as hard boards, it is also necessary to consider the deformation of soft board materials during fixing processing. For example, when processing special materials such as soft boards, due to insufficient rigidity, they are easy to wrinkle, bend, flip, etc., and it is difficult to meet the requirements of flatness and dimensional position accuracy during processing.

[0005] Most of the current fixtures are specific and can only be processed for workpieces of the same type or with similar structural properties. There is a lack of unity of fixtures that can realize different processing methods (such as through holes, blind holes, cutting, engraving, etc.) for different types of plates.

In addition, due to the specificity of the fixture, it is not conducive to flexible cooperation with other auxiliary processing techniques

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