Testing Machines and Systems for automotive Industry - Zwick

Catalogue Testing Machines and Systems for automotive Industry

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Zw/ck # Roell

Hybrid Drives

These patented drives combine the advantages of the electromechanical drive - high precision and with those of the hydraulic drive - high-force density. The result: Even cylinders with large strokes and for very large forces can be operated and positioned with high precision. This principle is realized by operating exactly synchronous two parallel cylinders coupled with the crosshead independent of their respective loads, by having them follow precisely and nearly delay free the positions specified by an electromechanical pilot drive. The special features of this drive are:

• Higher testing travel (no adjustment of the fxed crosshead necessary)

• Relatively low headroom of the load frame

Drives

Electromechanical Drives

All electromechanical drives are based on play-free and low-wear ball-type linear drives and digitally controlled drives. They are equipped with load frames for test loads up to 600 kN. Combined with digital measurement and control systems, they offer the following advantages:

• Extremely-large, infinitely-variable speed range

• Very low speed settings possible (from about 0.5 um/min up)

• Highly precise and exactly reproducible positioning

Hydraulic Drives

This drive is located in the center of the upper fxed crosshead. The workspace below is therefore easily accessible. A servo or proportional valve regulates the oil flow between the hydraulic unit and differential cylinder. The oil cushion in the upper pressure prevents plunger pistons from Jumping" when a specimen breaks. The resolution of the piston travel sensor is 1.25 urn (less than 1/ 400,000th of the maximum testing travel. The hydraulic drive is the most efficient solution particularly for large test loads.

zwicki Line Load Frames and Drives

Model Z1.0 Z2.5

• Max. test load [kN] 1.0 2.5

• Work space height

* shortened [mm] - 573

* normal [mm] - 1073

* increased [mm] 1373 1373

• Work space width [mm] 4 4 •Work space depth [mm] 99.5 99.5

• Max. crosshead speed [mm/min] 1800 800

• Crosshead travel resolution [urn] 0.2265 0.0996

• Max. power consumption, kVA 0.4 0.4

ProLine Load Frames and Drives


M odel	Z0.5	Z005	Z010	Z020	Z030	Z050¹⁾	Z1 00
• Max. test load [kN]	0.5	5	10	20	30	50	100
• Work space height
* shortened [mm]	-	565	-	-	-	-	-
* normal [mm]	590	1065	1045	1045	1370	1370	1360
* increased [mm]	1360	-	-	-	-	-	-
• Work space width [mm]	CO	420	420	420	440	440	640
• Work space depth [mm]	100	_CCCCC					_C
• Max. crosshead speed [mm/min]	1500	500	1000	500	300	180/600¹'	300
• Crosshead travel resolution [um]	0.226	0.050	0.090	0.045	0.025	0.015/0,016¹⁾	0.008
• Max. power consumption, kVA	0.4	0.8	0.8	0,8	0,8	0.8/3¹'	³
¹⁾ This testing machine is available in two electronics variations. The first value is for the standard electronics, the second for testControl.