Cross-beam punch

Abstract

A press for punching large beam of truck is composed of main body, micro drive unit, drive system, hydraulic system, pneumatic system, lubricating monitor system and electric control system. Said main body consists of upper beams, slide blocks, vertical posts, base, movable bench and its fixture, stretching pad, upper die fixture, etc. Its 4 main gears are divided into left and right gear sets which are cynchronous. The pressure monitor, lubricant flow monitor and temp monitor are applied to its all bearings.

Description

technical field [0001] The invention relates to a frame punching press, in particular to a heavy frame punching press for double crank type front and rear loading and unloading on the frame assembly production line of a heavy-duty automobile factory. Background technique [0002] The 4000T frame stamping press currently used by Jiangling Motors Co., Ltd. is a product of Komatsu Japan in the late 1980s. It is a product with strong integration of electromechanical and hydraulic, and is mainly used for punching the frame of medium-sized trucks. If it is used for the stamping of heavy-duty vehicle beams, its ability and technology have the following deficiencies: 1) comprehensive ability is insufficient. The punching force and working energy of the existing press are insufficient, and the thickness of the punched girder beam plate is less than 8mm, and the length is less than 9m. However, the thickness of the girder plate of a heavy-duty vehicle is more than 10mm, and the lengt...

AI Technical Summary

Problems solved by technology

If it is used for the punching of heavy-duty vehicle beams, its ability and technology have the following deficiencies: 1) Insufficient comprehensive ability

The blanking force and working energy of the existing press are insufficient, and the thickness of the punched girder beam plate is less than 8mm, and the length is less than 9m

However, the thickness of the girder plate of a heavy-duty vehicle is more than 10mm, and the length is more than 9m. It needs to be overlapped and riveted or welded to form a composite beam before it can be used for heavy-duty vehicles. The cost is high and the efficiency is low.

2) Noise control is difficult

The main transmission system of the existing press is complex, with many gears and bearings, large moving parts, heavy weight, poor transmission accuracy, and poor synchronization, resulting in a noise of more than 90dB when the press is working

3) The lubrication monitoring of the transmission system is unreliable

The existing press lubrication monitoring is the monitoring at the end of the system, and each lubrication point is not individually monitored, which is also the reason for frequent bearing damage, so the lubrication monitoring system is not reliable enough

4) The motor current of the micro-motion system is too large

When the existing press is testing molds, changing molds or adjusting, the micro-motion motor needs to start and brake frequently, and its direct starting current is 600% of the rated current. If the current is too large, the impact on the power grid is too large. When it starts, the peripheral equipment shut down

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