BUP Sheet Metal Testing Machines

With the BUP sheet metal testing machines, characteristic values of sheet metal forming are determined and evaluated. Sheet metal testing machines support development processes in the characterization of new alloys and new metalworking technologies, as well as in eventual series production.

The benefits of sheet metal testing machines are based on flexibility, easy and fast fixture changes for different tests, and the individually controllable integrated functions such as holding down, punching, drawing and ejection.

Sheet metal forming test with BUP200, BUP400 and BUP1000 testing machines

Key Advantages and Features

Description

  • The BUP sheet metal testing machines for sheet metal forming are available in five versions with a maximum ram force of 100 kN, 200 kN, 400 kN, 600 kN or 1000 kN.
  • A punch function is integrated in the BUP testing machine, allowing a blank to be punched and a cup to be drawn in one operation (starting at BUP 200).
  • The test sequence can be individually adjusted – as for example, the sequence of the deep drawing speed and the sheet metal clamping force.
  • With the optional testXpert III testing software, the test results can also be evaluated graphically and saved.

Advantages & features

  • Fast, easy tool and fixture changes, including drawing-punch, drawing-die, blank-holder, cutting-punch, cutting-ring and scraper-ring. Numerous modular expansion options.
  • Test tools/fixtures from earlier-generation machines can still be used (with some restrictions). Test tools/fixtures for established test methods available 'off-the-shelf', special tools/fixtures on application.
  • Low piston-cylinder friction enables accurate measurement recording and excellent reproducibility.
  • Clean and quiet in operation. Easily transportable thanks to compact design.
  • Hydraulic cup-extractor via integrated piston, with piston rod acting through drawing-punch.
  • Electronics can be swiveled to optimum viewing angle for measured values.
  • Conveniently positioned controls.
  • Electrical and hydraulic protection for all functions.
  • Adjustable automatic blank-holder unloading during test enables cup-drawing without crushing ear.
  • Automatic setting of pre-selected clamping force after blanking procedure.
  • Automatic piston withdrawal and switch-off after end of test due to crack detection or on reaching maximum ram stroke (s-limit).
  • Swing doors and removable casing panels for easy access to components.
  • Open design allows multiple tests to be performed on long sheet-metal strips without the need to open and close the tool head.
  • No unpleasant odors thanks to closed oil-circuit.
  • Special solutions (e.g. piezo load cell, different deep drawing speeds, separate hydraulic power-packs etc.) are available on request.
  • Change deep drawing speed during test (BUP 400 / 600 / 1000).
  • Operating-mode switch for automatic or manual operation (BUP 400 / 600 / 1000).
  • Two-handed operation eliminates risk of accident when closing the manual tool head of the BUP 100/200 (e.g. falling due to accidental jolt).
  • Hydraulic opening and closing of tool head, with 2-handed operation (BUP 400 / 600 / 1000).
  • Setup stroke for easy tool/fixture change (BUP 400 / 600 / 1000).

Typical Test Methods for Sheet Metal Testing Machines

A typical test method, for example, is the cupping test to Erichsen (ISO 20482), in which a die is pressed into a clamped test piece until a crack appears. There is no in-flow of the sheet metal. The drawing formability of the sheet metal is determined from the die penetration depth.

Another frequently used test method is the earing test to DIN EN 1669. In this test circular blanks are punched or inserted and drawn into cups (metal flow-in). The deep drawing characteristics of the metal are determined via the percentage ear height ratio.

Other metal forming test methods include square cup tests, hole expansion tests, bulge tests or the determination of forming limit curves.

Technical Overview

Overview

The sheet metal testing machines are available in five versions:

  • 100 kN
  • 200 kN
  • 400 kN
  • 600 kN
  • 1000 kN

100 kN/200 kN

Type

BUP 100

BUP 200

Item no.

049779

024024

Test load, max. (ram force, max.)

100

200

kN

Machine dimensions

Total height, approx.

1,635

1,635

mm

Table height

880

880

mm

Height to tool head

1,185

1,185

mm

Width

850

850

mm

Depth

1200

1200

mm

Weight, approx.

650

kg

Punch force, max.

275

275

kN

Clamping force, max.

275

275

kN

Dimensions of the specimen

Blank (punchable)

Ø 118

Ø 118

mm

Blank, insertable, max.

Ø 165

Ø 165

mm

Blank, insertable (with centering finger), max.

Ø 105

Ø 105

mm

Sheet metal strip width, max.

128

128

mm

Sheet metal thickness, max.

6.4

6.4

mm

Measurements of the test tools

Draw matrix, outer, max.

Ø 155

Ø 155

mm

Draw die, max.

Ø 60

Ø 60

mm

Read-off accuracy for ram stroke

0.01

0.01

mm

Read-off accuracy for ram force

0.01

0.01

kN

Read-off accuracy for clamping force

0.01

0.01

kN

Reading accuracy of deep drawing speed

0.01

0.01

mm/s

Ram stroke (travel of the deep draw piston)

0 ... 80

0 ... 80

mm

Deep drawing speed, max.

1200

1200

mm/min

Coolant

Coolant water connection

G1/2"

G1/2"

Coolant water req. at 20 °C water temperature

4

4

l/min

Electrical supply data

Electrical power supply

3 x 400

3 x 400

V (3Ph, N, PE)

Power consumption

10

10

kVA

Frequency

50

50

Hz

Back-up fuse

32

32

A

Approx. weight

650

400 kN/600 kN

Type

BUP 400

BUP 600

Item No.

037359

049042

Test load, max. (ram force, max.)

400

600

kN

Machine dimensions

Overall height, approx.

1850

1850

mm

Table height

955

955

mm

Height to tool head

1185

1180

mm

Width

1048

1048

mm

Depth

1775

1775

mm

Approx. weight

1600

1600

kg

Punching force, max.

400

600

kN

Clamping force, max.

400

600

kN

Specimen dimensions

Blank (punchable)

Ø 250

Ø 250

mm

Blank insertable, max.

Ø 250

Ø 250

mm

Blank insertable (with centering finger), max.

Ø 220

Ø 220

mm

Sheet metal strip width, max.

260

260

mm

Sheet thickness, max.

10

10

mm

Tool/fixture dimensions

Drawing-die outside, max.

Ø 250

Ø 250

mm

Drawing-punch, max.

Ø 120

Ø 120

mm

Reading accuracy, ram stroke

0.01

0.01

mm

Reading accuracy, ram force

0.01

0.01

kN

Reading accuracy, clamping force

0.01

0.01

kN

Reading accuracy, deep drawing speed

0.01

0.01

mm/s

Ram stroke (travel of deep draw piston)

0 ... 120

0 ... 120

mm

Deep drawing speed, max.

1000

1000

mm/min

Coolant water

Coolant water connection

G1/2"

G3/4"

Coolant water req. at 20 °C water temperature

7

7

l/min

Electrical supply data

Electrical supply

3 x 400

3 x 400

V (3 Ph/PE)

Power consumption

17.5

17.5

kVA

Frequency

50

50

Hz

Back-up fuse

32

32

A

1000 kN

Type

BUP 1000

Item No.

632802

Test load, max. (ram force, max.)

1000

kN

Machine dimensions

Overall height, approx.

1734

mm

Table height

1076

mm

Height up to tool head (w/o protective screen), approx.

1353

mm

Width

1200

mm

Depth

1970

mm

Approx. weight

2100

kg

Punching force, max.

1000

kN

Clamping force, max.

1000

kN

Specimen dimensions

Blank (punchable)

Ø 250

mm

Blank insertable, max.

Ø 250

mm

Blank insertable (with centering finger), max.

Ø 270

mm

Sheet metal strip width, max.

260

mm

Sheet thickness, max.

10

mm

Tool/fixture dimensions

Drawing-die outside, max.

Ø 250

mm

Drawing-punch, max.

Ø 120

mm

Reading accuracies

Reading accuracy, ram stroke

0.01

mm

Reading accuracy, ram force

0.01

kN

Reading accuracy, clamping force

0.01

kN

Reading accuracy, deep drawing speed

0.01

mm/s

Ram stroke (travel of deep draw piston)

0 - 150

mm

Deep drawing speed, max.

750

mm/min

Coolant water

Coolant water connection

G3/4"

Coolant water req. at 20°C water temperature

10

l/min

Electrical supply data

Electrical power supply

3 x 400

V (3 Ph/PE)

Power consumption

16

kVA

Frequency

50

Hz

Back-up fuse

32

A

Interesting Customer Projects with Sheet Metal Testing Machines

Learn more about how customers are using our sheet metal testing machines.
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