Elma E168R Rotsry blade shearing machine

ELMA Plate working machines

Our rotary blade shearing machines are designed to trim plate parts automatically by simple dropping or spinning, besides tilting the table which can also make a straight vertical stroke. This extra feature is essential when it is necessary to remove a workpiece from another machine, allowing the complete exploitation of the above-described characteristics with insertion in a line of automatic pressing.

The horizontal flange of the stamped plate parts has more or less irregular edges but is perfectly flat and serves as a reference bearing for the trimming, which is carried out by means of blades positioned and designed to keep the part constantly adherent to the tilting support table of the machine. The support table height is adjustable to allow the cutting of the required point.

At the end of each automatic cutting cycle, the table tilts down to unload both the parts and the scrap onto a conveyor belt. In this way, the stamped part can be sent to the subsequent working phase, and the scrap can reach the collection center.

The horizontal flange of the stamped plate parts, though irregular in shape, remains flat and works as a reference for trimming the part. The trimming is done with blades that are designed to maintain the part against the tilting table of the machine. The support table is height-adjustable to ensure cutting at the required point.

Trimming Process
Advance of the external blade
Rotation of the two blades and consequent trimming of the part
Return of the external blade to rest position
Tilting of the support table with ejection of both the part and the scrap

Thicknesses that can be handled are
E114R 3 mm
E168R 5 to 6 mm
E252R 8 to 10 mm

Straight vertical translation of the support table
This feature comes standard with models E168R and E252R, but it can also be supplied on other models. The support table lowers automatically at the starting motion and raises again when trimming is completed. It then tilts down to unload the machined part and the scrap, and returns to its rest position. The rest position allows the parts to advance on the table without obstruction.

Shearing Specifications
Model
X Without limitations
Y Without limitations
Length A
800 1100 1200 1500
Width B
600 800 850 1000
Max height F
325 335 480 480
Max thickness H
80 90 120 120
Min radius R2
66 66 100 100
Min radius R3
12 12 19 19
Max speed S
1.6 3 5 6 8 10

Trimming and Flanging
Trimming and simultaneous internal flanging of non-circular terminal ends. This machining ís carried out in two complete runs of the part at a speed of 8 to 12 mm/min. Thicknesses that can be machíned are:
E114R 1 mm.
E144R 2 mm.
E252R 5 mm.
A First run B second run Trímmíng of parts wíthout horízontal flangíng and edge curlíng
Up to the diameter or the diagonal of 200 mm it is possible to use the internal blade of the same shape and síze as the part.
Over 200 mm oпly circular parts can be trimmed.
Speed for círcular parts: 20 m/mín.
For these types of machining a pressure must be exerted on the part.
External flangíng and trímmíng
External flangíng.
Can be carried out both on circular and not-círcular parts.
Trímmíng of port-holes, frames and other diffículty accessíble parts
Thanks to their special operation our shearing machines can trim on difficultly accessible positíons or open parts like mudguards, gutter elbows, etc.

Plate working machínes ELMA