Punching and flanging machine

Abstract

The invention provides a punching and flanging machine. The punching and flanging machine comprises a rack and a punching mechanism and a front feeding car which are arranged on the rack. The punching and flanging machine is characterized in that the working end of the punching mechanism is provided with a punching pin of which the cross section is in an elliptic shape, and the rack is further sequentially provided with outer mold clamping blocks, a mold core, a back feeding car, a hollow mold core connecting rod, a cone tongue rod connecting rod, a mold core connecting rod fixing seat and a flanging drive oil cylinder; the mold core comprises a hollow outer mold core body, a mold core insert inserted into the top of the outer mold core body, a flanging punch and a cone tongue rod, wherein the flanging punch and the cone tongue rod are arranged in an inner cavity of the outer mold core body, the flanging punch is arranged on the cone tongue rod in a sleeving mode, the cone tongue rod is connected to the flanging drive oil cylinder through the cone tongue rod connecting rod, and the cone tongue rod is moved to push the flanging punch to perform hole flanging machining. The punching and flanging machine is few in process, high in hole flanging efficiency, little in mold wear, durable, low in machining cost and capable of machining thin-wall and thick-wall pipes and machining a same pipe fitting in the different directions.

Description

technical field [0001] The invention relates to the field of drilling and flanging, in particular to a punching and flanging machine. Background technique [0002] At present, the methods for drilling holes on the surface of the pipe and flanging the holes are as follows: 1. A kind of processing equipment for flanging the pipe hole in the Chinese invention patent (notification number CN2905260Y) discloses that the processing equipment can turn the pipe hole Edge method: limit the pipe material in the fixed frame formwork, position the flanging punch on the bottom plate of the supporting form, penetrate the bottom plate of the supporting form into the pipe with the drilled hole, and lift the bottom plate of the supporting form upwards. Insert the top of the flanging punch into the hole of the pipe, fix the demoulding bottom plate, press the die plate on the pipe, connect the bottom end of the tie rod with the flanging punch, and then use the stretching equipment Pull the pul...

AI Technical Summary

Problems solved by technology

[0002] At present, the methods for drilling holes on the surface of the pipe and flanging the holes are as follows: 1. A kind of processing equipment for flanging the pipe hole in the Chinese invention patent (notification number CN2905260Y) discloses that the processing equipment can turn the pipe hole Edge method: limit the pipe material in the fixed frame formwork, position the flanging punch on the bottom plate of the supporting form, penetrate the bottom plate of the supporting form into the pipe with the drilled hole, and lift the bottom plate of the supporting form upwards. Insert the top of the flanging punch into the hole of the pipe, fix the demoulding bottom plate, press the die plate on the pipe, connect the bottom end of the tie rod with the flanging punch, and then use the stretching equipment Pull the pull rod until the pull rod completely pulls the flanging punch out of the hole of the pipe. The mold used in this method is complicated and the processing steps are cumbersome. Every time the punch is put into the pipe through the demoulding base plate, and then To penetrate the hole, it is necessary to carry out a step of connecting and fixing with the stretching equipment, the processing efficiency is low, and there is no value for mass production; Use a drill to process a round hole, then repair the round hole into an oval hole, replace the drill with a drill with a protruding part, then put the drill with a protruding part into the hole, pull it up while rotating, and process it into a flanging After flanging, use an edge grinding tool to grind it flat. This processing method has high requirements on the rigidity of the cutter head, and the cutter head is easy to wear. The flanged hole after processing needs to be polished. For thin-walled pipe fittings, it is helpless for pipe fittings with high hardness such as thick-walled pipe fittings, long pipe fittings and stainless steel pipes.

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