Manual Erichsen cupping machine – Model 100

Model 100

Order number: 00040131

Sheet metal testing machine, with Erichsen cupping, up to 1.5 mm at 400 N/mm2

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Description

The Sheet Metal Testing Machine Model 100 for manual operation provides a maximum drawing force of 30 kN and a blankholder force according to the standard, of 10 kN.

Application

The manually operated Testing Machine is intended for measuring the drawing qualities of ferrous and non-ferrous metal by means of the ERICHSEN CUPPING TEST in accordance withnorms and standards mentioned below on sheet and strip from 0.1 to 1.5 mm thick (400 N/mm² tensile strength) and on foil material in thicknesses down to 0.005 mm. Because it is easy to operate the machine, it is particularly suitable for use in factories only involved with a limited amount of sheet metal forming, and applications confined to thinner materials.

Purpose

The Sheet Metal Testing Machine, Model 100, provides a means to measure the drawing quality of sheet metal with very little effort.
By establishing the quality of material which is still just satisfactory for producing a particular drawn workpiece the lowest cost material suitable for the part can be established. The standardised ERICHSEN Cupping Test is in this way useful for the Purchasing Department, as part of an order specification.
The surface grain size is shown up clearly on the tip of the bulge produced in the Cupping Test.
No special skills are required to operate the machine. Anybody can use it after instruction.

Description

The Sheet Metal Testing Machine, Model 100, is a bench mounted unit with a cast iron machine body and a cylindrical test head.

To conduct the cupping test the sheet metal specimen or foil is entered into an opening through the test head.

The test head is then tightened manually against a stop on the locating sleeve. This clamps the blank with a force of 10 kN as required by the cupping test standards mentioned above.

The clutch pin is pulled outwards from the locating sleeve, the test head is turned clockwise and the cupping process commences.

The cupping test value reached is displayed on a digital counter.

The forming process and the ap-pearance of the crack can be observed conveniently looking down onto the blankholder. In poor light, or when using the smaller test tools nos. 5 and 11, we recommend the use of a special microscope with battery operated lamp.