Multilateral bending center die with self-locking and automatic disassembly and assembly functions

Abstract

The invention discloses a multilateral bending center die with self-locking and automatic disassembly and assembly functions. The multilateral bending center die comprises an upper die body, a self-locking mechanism and a pressing mechanism; the upper die body is detachably installed at the bottom of a cross beam in the bending center, the height of the cross beam can be increased and decreased, and an inverted-U-shaped groove is formed in the bottom of the cross beam and provided with a first side leg and a second side leg; a tenon is arranged at the top of the upper die body, extends into the inverted-U-shaped groove, and is in close fit with the inner wall surface of the first side leg; the self-locking mechanism comprises a fixed inclined block and a locking block; the fixed inclined block is located in the portion, between the tenon and the second side leg, of the inverted-U-shaped groove; the fixed inclined block is provided with a self-locking inclined face; the inclination angle of the self-locking inclined face is alpha, and alpha is smaller than arctan (mu), specifically, mu is the friction coefficient of the self-locking inclined face; and the locking block can be driven by the pressing mechanism to stretch into the inverted-U-shaped groove, so that the tenon is locked in the inverted-U-shaped groove. The self-locking mechanism and the pressing mechanism are adopted, so that double self-locking is achieved, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the field of numerical control bending, in particular to a multilateral bending center mold with self-locking and automatic disassembly functions. Background technique [0002] At present, the sheet metal processing industry is a typical small batch, multi-variety, and product switching is very frequent. Therefore, frequent mold change operations are required, and domestic manual mold change operations obviously cannot meet the use requirements. The flexibility of equipment requires automatic replacement and clamping of molds, which is the bottleneck that hinders the development of bending centers from automation to flexibility and intelligence, and is also a technical problem that must be overcome. [0003] In recent years, CNC bending centers have developed rapidly in the domestic CNC sheet metal processing equipment market. Thanks to their high processing efficiency and degree of automation, the processing efficiency is 2-3...

AI Technical Summary

Problems solved by technology

[0004] As the core component of the CNC bending center, the mold is currently clamped mainly by manual clamping, and the locking methods are mainly "screw locking" and "press plate locking", neither of which can realize automatic clamping

At the same time, poor clamping reliability affects machining accuracy

Since the bending center bears loads in both horizontal and vertical directions during the processing process, the two locking methods will appear as follows during the stress process. image 3 and Figure 4 The mold shown is "turned over", seriously affecting the machining accuracy of the machine tool, and the accuracy cannot be compensated

These two methods rely on external force to lock, and the lock is not reliable.

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