Kidney shape hole punching forming system and method of loudspeaker basin frame

Abstract

The invention discloses a kidney shape hole punching forming system of a loudspeaker basin frame. The system comprises a machine frame and a punching module, wherein the punching module is arranged onthe machine frame, the punching module comprises an upper die and a lower die, a punch mechanism is arranged inside the upper die, the punch mechanism comprises a plurality of punching blocks which are uniformly distributed in an annular array, the inner surfaces of the punching blocks are inclined surfaces, an inner punch is arranged in the center of the upper die, a plurality of inclined planeswhich are wedged into the inner surfaces of the punching blocks are arranged on the periphery of the inner punch, a blind hole matched with the inner punch is formed in the center of the upper die, rectangular holes matched with the punching blocks are formed in the side face of the upper die, the rectangular holes communicate with the blind hole, the lower die is arranged below the upper die, and a cavity matched with the loudspeaker basin frame is arranged on the lower die. According to the kidney shape hole punching forming system, the upper die and the lower die are used for positioning aworkpiece, and then the multiple punching blocks are driven to punch the outer side under the wedging action of the inner punch, so that positioning of the workpiece is good, deviation does not occurto the punching blocks due to the limitation of the upper die, the punching quality is good, and the system is worthy of being vigorously popularized.

Description

technical field [0001] The invention relates to the technical field of loudspeaker processing, in particular to a stamping and forming system for a waist hole of a loudspeaker basin frame. Background technique [0002] The speaker is composed of an electromagnet, a coil, and a speaker diaphragm. Speakers convert electrical frequencies into sound. According to the principle of physics, when the current passes through the coil to generate an electromagnetic field, the direction of the magnetic field is the right-hand rule. Assume that the speaker plays C tone, its frequency is 256Hz, that is, it vibrates 256 times per second, the speaker outputs 256Hz alternating current, the current changes 256 times per second, and emits C tone frequency. The speaker produces sound when the electric coil vibrates with the speaker membrane, pushing the surrounding air to vibrate. [0003] The frequency of sound waves that can be heard by the human ear is generally between 20 Hz and 20,000 ...

AI Technical Summary

Problems solved by technology

[0012] Among them, the frame as the skeleton of the speaker is the carrier and support of the vibration system and the magnetic circuit system. The frame in the prior art is mostly processed by metal plate stamping. The processing of the speaker frame includes blanking, stretching, punching Processes such as center hole, waist punching, edge trimming and flanging, etc. Among them, the waist punching hole needs to be punched on the side of the speaker frame. The straight punching method used in the prior art is likely to cause the punch to deflect and affect the punching. quality

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