High speed train body skirt plate machining tool and method

Abstract

The invention discloses a high speed train body skirt plate machining tool and method. The high speed train body skirt plate machining tool comprises two or more slide worktables. Each slide worktable is provided with a lateral positioning device, a vertical positioning device, a fixed base, a slide base and an auxiliary supporting device. The tops of the fixed base and the slide base are each provided with a press device. A rear positioning plate and a front positioning plate of each vertical positioning device are separately arranged on the corresponding fixed base and the corresponding slide base. Each lateral positioning plate is arranged on the corresponding slide base. The height of each slide base is smaller than that of the corresponding fixed base. The machining tool can further adapt to to-be-machined skirt plates of different specifications by adjusting the auxiliary supporting devices. According to the high speed train body skirt plate machining tool, the modular design of the skirt plate machining tool is achieved, and the universality is high; and through the fixed bases, the slide bases, supporting bases, corner cylinders which are universal and integrated control of a PLC, automatic clamping of the machining tool for the skirt plates of the different specifications and different lengths is achieved, and the auxiliary machining time of numerical control machine tools are further shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a processing tool, in particular to a processing tool for processing a skirt plate of a car body of a high-speed EMU, and belongs to the technical field of tooling for processing a car body of a high-speed EMU. Background technique [0002] Most of the key equipment of the high-speed EMU is hoisted under the train. When the EMU runs at high speed on the line, strong air pressure waves will be generated. Therefore, accidents of high-speed impact of sand, stones, or other objects on the equipment under the train often occur. , Seriously endanger the safety of high-speed trains. In order to reduce air resistance, protect and repair the equipment under the car, and ensure the safe operation of the high-speed EMU, the undercarriage of the high-speed EMU with a speed of 200 km per hour and above must be designed and installed with a fully enclosed Under-vehicle equipment compartment, under-vehicle equipment is installed in the equip...

AI Technical Summary

Problems solved by technology

[0003] The existing high-speed motor vehicle equipment compartment aluminum alloy skirt board is made of 7.4-meter-high profiles assembled and then welded and then machined. Due to the large size and thinness of the skirt board profiles, poor rigidity, complex and irregular shape, the clamping process is difficult. Deformation is easy to occur during processing, which puts forward higher requirements for processing equipment, processing technology, and tooling. The processing characteristics are: 1. Large-scale processing equipment is required, and gantry processing centers are generally used in the prior art; 2. Due to the skirt plate The shape of the skirt is not a flat plate and cannot be processed directly on the working platform of the processing equipment. Therefore, it is necessary to use tooling to fix the skirt

[0004] The ordinary positioning and clamping method used in the prior art has low processing efficiency, and repeated clamping leads to low positioning accuracy, a lot of man-hours, and the effect of controlling the deformation of the profile during processing is not very good, resulting in deformation of the skirt after processing Out of tolerance, it is difficult to guarantee the dimensional accuracy of the rear apron after machining, and the processing quality is greatly affected

In addition, the processing tooling of the prior art has poor adjustability, and it is difficult to adapt to the clamping and use of various skirts, and cannot meet the requirements for auxiliary processing of different types of skirts, and has limitations in the scope of application.

At present, there are many models of high-speed EMU vehicles, and the streamlined appearance design shows a trend of diversification. The streamlined car body is mainly reflected in the side wall. As a large part with the highest appearance requirements for high-speed EMUs, the aluminum alloy car body side wall is often personalized in design. , Differential design, the skirt plate needs to match the cross-sectional shape of the car body, so the skirt plate often has a wide variety of products in high-speed EMU vehicles, and the differences between different projects are large, and there will be large differences in tooling during the processing and production process. The characteristics of poor versatility

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