CN2223150Y - Composite punch - Google Patents

Abstract

A composite punch for notching or punching thick steel plate is composed of an initial blade and a multiple blade, and features that the length of initial blade and the gap between initial blade and multiple blade are chosen to complete the punching procedure of thick steel plate.

Description

Compound punch

The utility model is to be contained in a kind of drift that on the punch press steel plate is carried out otch or punching, belongs to the punching field.

In steel plate upper cut or punching, as produce fork spanner or double offset ring spanner etc., traditional method is with a smaller mouth or hole of punch press subpunch, and then be worked into required size with milling cutter or slotting tool, because the drift of punch press is cut very hair of wall towards steel plate the time, and punching is up-small and down-big horn mouth shape, generally all must further process just and can meet the requirements, and obviously there are many, the inefficient shortcomings of operation in this traditional steel plate punching method.

The purpose of this utility model is in order to overcome above-mentioned weak point of the prior art, designs a kind of compound punch that can the one-off hole-piercing moulding on steel plate.

The blade of compound punch of the present utility model is made up of first sword and multiple sword, and the fit clearance of first sword is 2 to 3 times of conventional gap, and the fit clearance of multiple sword approximates 0.2mm, and the distance between first sword and the multiple sword is 1/6 to 4/5 steel plate thickness.Just the Cui between sword and the multiple sword is apart from being 1/3 of steel plate thickness.

Accompanying drawing 1 is a circular hole drift schematic diagram;

Accompanying drawing 2 is triangle drift schematic diagrames;

Accompanying drawing 3 is cydariform drift schematic diagrames;

Accompanying drawing 4 is square drift schematic diagrames;

Accompanying drawing 5 is polygon drift schematic diagrames.

1 is first sword among the figure, the 2nd, multiple sword, during use, replace common drift to get final product, because the fit clearance of the first sword of compound punch is 2 to 3 times of conventional gap with compound punch, so it is more laborsaving when stamping-out, the fit clearance of multiple sword approximates 0.2mm, can make the workpiece exquisiteness directly reach designing requirement, for the ease of furfur, with the distance between first sword and the multiple sword be controlled at steel plate thickness 1/6 to 4/5 between, generally can be controlled in 1/3 of steel plate thickness and get final product.

Compound punch of the present utility model, have reasonable in design, die-cut precision height, the efficient advantages of higher, The die-cut operation of steel plate once finished, and drift can be made the die-cut various shapes of various geometries The hole can be used separately and be rushed single hole, and also denumerable Zhi Chongtou uses simultaneously and rushes porous, is a kind of die-cut thick The desirable drift of steel plate.

Claims (2)

1. compound punch that steel plate is carried out otch or punching, the blade that it is characterized in that drift is made up of first sword and multiple sword, the fit clearance of first sword is 2 to 3 times of conventional gap, and the fit clearance of multiple sword approximates 0.2mm, and the distance between first sword and the multiple sword is 1/6 to 4/5 steel plate thickness.

2. compound punch as claimed in claim 1 is characterized in that just the Cui distance between the sword and multiple sword is 1/3 of a steel plate thickness.

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