Square tube profiling and punching die achieving one-off forming of profiling and punching

Abstract

A square tube profiling and punching die achieving one-off forming of profiling and punching is applied to the field of machining equipment. Square tube fittings machined by the die can be in bolted connection with other members directly without other auxiliary members or processes. The die comprises an upper die and a lower die; the upper die is composed of an upper die plate, an upper die backing plate, an upper die fixing plate, guide sleeves, springs, a male die fixing plate and male dies; the lower die is composed of a lower die fixing plate, guide pillars, female dies and ejecting blocks. Compared with the prior art, the die has the advantages that accessories such as sealing plates, rib plates and base plates are omitted, the work amount is reduced, and the cost is saved; machiningis easy and fast, installation and transport are convenient, and the work period is shortened; the workload of welding steel structure joints is reduced, manual work is reduced, and the labor cost islowered.

Description

technical field [0001] The invention belongs to the field of mechanical processing equipment, and in particular relates to a square tube pressing and punching die for one-time forming. Background technique [0002] There are many ribs at the bolted joints of existing steel structures, all of which must be welded. Soldered connections have the following disadvantages: [0003] 1. In the heat-affected zone near the weld, the metallographic structure of the steel changes, causing the local material to become brittle; [0004] 2. Welding residual stress and residual deformation reduce the bearing capacity of compression members; [0005] 3. The welded structure is very sensitive to cracks. Once a local crack occurs, it is easy to expand to the whole, and the problem of cold and brittle at low temperature is more prominent. [0006] 4. There are many welded ribs, the amount of welding is large, the processing is relatively complicated, and the processing period is long. [00...

AI Technical Summary

Problems solved by technology

[0003] 1. In the heat-affected zone near the weld, the metallographic structure of the steel changes, causing the local material to become brittle;

[0004] 2. Welding residual stress and residual deformation reduce the bearing capacity of compression members;

[0005] 3. The welded structure is very sensitive to cracks. Once a local crack occurs, it is easy to expand to the whole, and the problem of cold and brittle at low temperature is more prominent

[0006] 4. There are many welded ribs, the amount of welding is large, the processing is relatively complicated, and the processing period is long

[0007] 5. The cost is high. During factory processing, the square tube, sealing plate, rib plate and bottom plate are welded into a whole, and then assembled on site

Rods with sealing plates, ribs and bottom plates take up a lot of space, are difficult to transport, and have high transport costs

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