Studer S151 Universal Cylindrical Grinding Machine
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Studer S151
Studer S151
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The S151 is a powerful, compactly designed machine whose wide working
range facilitates internal and external grinding operations up to a
diameter of 300 mm. The large accommodating capacity of the sturdy
workhead and the double spindle turret open up wide areas of
application, making the machine suitable for complete machining in one
setup.
Features:
Slide with spindle holder for 1 or 2 grinding
spindles
Swivel beam with swivelling range of -5/+30
deg
Frequency-controlled grinding spindle for
external and internal grinding
Cross-slide concept for universal applications
Full enclosure with 1 sliding door
Standardised interface for loader and
peripheral devices
Extensive range of accessories
Specifications:
Center Height
7"
Workpiece weight
220 lbs.
Number of grinding
spindles
2
Spindle Speed
(rpm)
up to 51,000
OD Grinding wheel
dimensions
10 x 1"
(16 x 1.28")
Studer S151cnc Internal Cylindrical Grinder with
OD Grinding Spindle
The S151cnc Tackles Short Runs, Mixed Lots
Modular design for quick setup and changeover, state-of-the-art digital
control and drive systems and user-friendly step-by-step programming
make the S151cnc a flexible solution to a wide variety of internal and
external cylindrical grinding applications in a single clamping. Swing
diameter is 350 mm. Between-centers grinding length is 200 mm. Chuck
capacity (including tooling) is 150 kg.
The turret head arrangement presents two grinding spindles for rough and
finish grinding in the same set-up. The two spindles have independent,
programmable drive systems to fully optimize the grinding process.
Spindle configuration is ID/ID or a combination ID/OD for universal
applications, which allows for OD and ID grinding in one set-up. Maximum
spindle diameter is 170 mm. ID spindle speed range is 24 rpm to 51,000
rpm. OD spindle speed is 6,000 rpm.
The universal turret wheelhead has a serrated 1 degree resolution Hirth
ring coupling providing extreme accuracy and repeatability.
S151cnc overview
Digital direct-drive, three-phase servomotors with prestressed,
precision ballscrews power the X- and Z-axes. Cross slide X-axis travel
is 350 mm at speeds ranging to 25 m/min. Linear resolution is 0.0001 mm.
Z-axis slide travel is 530 mm. Speed and linear resolution are
respectively 25 m/min and 0.0001 mm. V and flat guideways are coated
with abrasion-proof Granitan S200 and provide high vibration dampening
and superior rigidity. Patented pre-loaded precision roller bearing
guideway provides wear-free, stick-free movement and high-precision
accruacy. The cast iron machine base delivers outstanding vibration
dampening, rigidity and strength, as well as excellent chemical
stability and thermal compensation.
Dressing
Wheel dressing intervals may be made by the operator following these
simple methods: by pressing a pushbutton at any time during any grinding
cycle; after a programmed number of specific machined parts or grinding
operations; at programmed switchover points; at the programmed nominal
size; after a specific number of strokes - or a combination of these,
permitting the optimum solution for the specific grinding application.
Grinding wheel reference points are referred to as "T" numbers, and
together with Studer grinding cycles, "T" numbers permit programming
with nominal size. The actual value indication on the control LCD refers
in each case to the programmed wheel reference point. Values of the
grinding wheel shape are entered in a dressing dialog display at the
control.
Control & programming
The S151cnc features state-of-the-art Fanuc 16i digital control and axis
drive components. Machine operation, setup, changeover, dressing and
programming of even complex parts are easily accomplished through the
innovative, step-by-step Studer Pictogramming which allows operators
simply to connect grinding cycles to one another and add necessary
numerical values. The control then generates the machine program
automatically. Advanced manual programming in G code is of course also
possible. Programming is done directly at the machine or off-line and
then downloaded to the machine control. Process parameters can be
changed on the fly, while the machine runs, without affecting the
workpiece program. The S151cnc control package features proven
application-specific Studer grinding cycles for diameters, shoulders
(left and right), tapers (negative and positive), contours, forms and
threads.
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