SU916142A1 - Disk shears - Google Patents

Description

The invention relates to the processing of metals by pressure, namely to disk shears for cutting sheet material.

Known disc shears for cutting sheet material containing a frame with racks and drive shafts with ^five- five knives installed in bearings mounted in the bores of the frame legs [13.

The disadvantage of the known scissors is the low productivity of their work, as well as low cutting accuracy.

The purpose of the invention is to improve the performance of disk shears and cutting accuracy.

This goal is achieved by the fact that the disk shears for cutting sheet material containing a bed with stand-_kami and drive shafts with disk knives installed in bearings mounted in the bores of the legs of the bed are provided with hollow rollers mounted on the specified shafts and placed between the disk knives , and

2

collets installed on the shafts, and nuts on the number of collets, which form a screw pair with the corresponding collet.

FIG. 1 shows scissors, general view; in fig. 2 - a design of a folding disk knife.

Disc shears contain frame 1, in the stands of which are mounted the supports of the knife shaft 2. The knife shafts 2 are fixed at a minimum / two disk knives 3 each. On: the knife shafts 2. rolls 4 are installed, which are fixed to the shaft with screws 5. The disk knives 3 are mounted on shafts 2 by means of collets 6 and nuts 7.

Installing knives 3 na required size is made on the marks on the shaft or on the template.

To secure the knife, it is necessary to tighten the nuts 7. For the convenience of fastening the collet in the butt has turnkey tongues. Detaching Voka produced obrayevtl order.

3 916142 4

The proposed scissors act independently, but can also be built into the mechanized cutting line of rolled and sheet materials.

Scissors work as follows. five

Cut material rolls 4 Sent on circular blades 3 which rotate in opposite directions with equal speeds and produce a cut material ¹⁰ distribution. If the scissors are embedded in a mechanized line, the belt feed is provided by a pulling device. Rolls 4 in this case help to feed the material and prevent its 15 sagging. To ensure the cutting of material of different thickness, i.e. to ensure constant contact of the feed rolls 4 with the workpiece, the upper knife roll 2 has the ability to vertically move 20 drops (the mechanism for changing the center-to-center distance is not shown).

The use of the invention allows to increase the productivity of the disk shears, as well as the accuracy of cutting.

Claims (1)

Claim Disc shears for cutting sheet material containing a bed with racks and drive shafts with disk knives installed in bearings mounted in the bores of the bed stands, characterized in that they are equipped with hollow rolls mounted on the specified shafts and placed between the disk knives, as well as the collet mounted on the shafts, and nuts on the number of collets, forming with the corresponding collet screw pairs.