Download Broschure DDG 450 /600 - Peter Wolters AG

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Double-Disk Grinding / Thru-Feed Grinding
DDG 450 / 600
High Production Surface Grinding
www.peter-wolters.com

Double-Disk Grinding
DDG 450 / 600
Latest Technology as Standard –
for outstanding Performance and Versatility
PETER WOLTERS: High-Precision System Solutions
Ideas – Drive – Flexibility – Commitment. That’s exactly
what makes the PETER WOLTERS Group a world leader in
the field of manufacturing Single- and Double-Wheel Fine
Grinding, Lapping, Polishing, Flat Honing and Deburring
Machines for flat work pieces.
PETER WOLTERS meets market requirements with a wide
range of new, innovative products, offering its customers
trend-setting solutions, since 1804. Products for Today and
Tomorrow.
Machine Model DDG 450 DDG 600
Grinding wheel diameter [mm] 457 600
Grinding wheel face [mm] 90 140
Work piece height (un-fixtured) [mm] 1 – 40 2 – 60
Drive power per grinding wheel [kW] 22 37 / 45
Separate feed sensitivity grinding wheels
with independent infinitely variable speed control
[mm]
Double-sided Surface Grinding to Perfection
Highly competitive, with it’s space saving footprint,
high precision and extremely cost effective design. The
double-disk surface grinding machines in the new DDG
product range from PETER WOLTERS offer economic
effectiveness at its best.
Where ever a simultaneous grinding of parallel surfaces
is required for a variety of work pieces. Two models,
one pledge: long lasting precision from the first to the
last part. Even under the harshest operating conditions.
Various grinding processes are available for the machining
of different work pieces.
0.001 – 0.10 0.001 – 0.10
Space required – vertical machine (without unit) [mm] 1400 x 1800 2100 x 2400
Weight [kg] 4500 9200
(Rights to make changes reserved)
Rotary throughfeed grinding
Linear throughfeed grinding

The DDG-Range
Machine Features and Customer Benefits at a Glance:
Features of the Machines Customer Benefits
Hardware
Tiltable, compact dressing system Maximum dressing accuracy, simple tool change
Vertical grinding spindle arrangement High performance (optional controllable rotational speed),
flexibility with feed solutions
CBN and diamond grinding wheels optional use Long service life, safeguards investment through changeover
capability
Minimal space requirement Easy integration into existing and new production lines,
low space costs
Modern, ergonomic construction Very good accessibility, very easy to service, safe and simple
operation
Options
• Rotary throughfeed grinding
• Linear throughfeed grinding
Automation solutions for loading and unloading to specific
customer requirements
Through choice of the grinding operation optimal
accommodation of accuracy requirements and throughput
Reduction of piece part and operator costs
High axial and flexural strength of the machine design High process stability over the machine service life
Feed motion of the grinding tool electromechanical, infinitely
controllable
Grinding spindle head saddle feed with re-tensioned anti friction
slideway
Variable control for optimal tool wear compensation
Process stability
Highly accessible tilting points Simple and accurate change of tilting during the process
Dressing tool feed motion is electromechanical with infinitely
variable control of feed motion speed
Variable control for maximum flexibility
Totally enclosed working space Maximum operator safety
Stable foundation plate Low oscillation and low vibration operation, durable,
safeguards investment
Adjustable slideways Easy adjustment for different work pieces
Cooling lubricant feed through the centre of the grinding spindle Optimum cooling lubricant distribution in the critical grinding zone
Integrated measurement control (Option) Maximum process stability and control
Grinding wheel position controller Tool wear compensation of the lower grinding wheel
for maximum accuracy
Extremely low and easy maintenance Minimal operating running costs
Easy maintenance construction Minimal service expenditure
Software
Intelligent process oriented visual display system Intuitive, easy operability
Detailed diagrammatic representation of the process parameters Support of the process visual display and optimization
SPS control of all main functions Complete overviews of the operating and maintenance
procedures for simple diagnosis
Additional modem connection available Real-time support direct on the machine
Safety shut-down Monitoring of all critical components and functions
Other Features
High process and technology know-how Individual process development, high production capability

Optical Post-process Measurement System
for PETER WOLTERS DDG Machines
Non-contact thickness measurement
PETER WOLTERS GmbH has developed a non-contact
system for measuring component thickness as an alternative
to conventional mechanical-measurement systems.
This system eliminates the disadvantages associated
with mechanical measurement, such as measurement
errors caused by measuring-tip wear, as well as possible
scratch marks on the work piece surface. It also makes
it possible to measure the thickness of components
with special surface contours, such as holes, grooves,
notches, and embossing, as well as extremely thin-walled
workpieces. The system employs optical measurement,
compensating for the above-mentioned disadvantages
associated with the tactile systems that have been used
to date for post-process measurement. At the same time,
integrated compressed-air nozzles protect the optical
path between the sensor and the work piece surface and
provide a targeted airflow that prevents unwanted work
piece movements and cleans the measuring surface.
Sensor Technology for the Optical Measurement of
Grinding-wheel Position in a PETER WOLTERS DDG 600
This measurement system makes it possible to measure
the lower grinding-wheel surface up to a grinding gap of
2 mm. The grinding-wheel position is detected by means
of optical distance measurement during the grinding process
at peripheral speeds of up to 60 m/s. With reference
to a representative grinding-wheel radius, this measurement
technology can be used for a control system that
keeps the position of the lower grinding wheel constant.
With a second, separate control system, the position
of the upper wheel can be adjusted by means of postprocess
thickness measurement. With this system, the
optimal grinding-gap position can be maintained for a
long period of time.
This technology offers the following advantages:
• Reduction of grinding-wheel wear
• Reduction of costs for dressing tools
• Increased output owing to a reduction of non-productive
times
Measuring points Measuring gap

Double-side Surface-grinding Machine with
Automation Interface and Downstream Deburring
System + Flip-over Device
Applications and features of the
DDG 450/600:
• Pre-grinding of workpieces with a high throughput
• Finish grinding of high-precision components
• Easy production-line integration
• Various levels of automation, from storage pipes or vibratory feeders to full automation
• Optional post-process measurement, tactile or non-contact
• Component sorting into various types
• Automatic wear compensation
• Integrated dressing unit
• Online monitoring possible for minimal downtimes
For maximum productivity:
DDG 450 and downstream BD 300-L deburring system
with flip-over device

PETER WOLTERS Worldwide
PETER WOLTERS GmbH
Buesumer Strasse 96
24768 Rendsburg
Germany
Phone: +49 4331 458-0
Fax: +49 4331 458-290
E-mail: info@peter-wolters.com
PETER WOLTERS GmbH
– Niederlassung Sued –
Robert-Koch-Strasse 12
71665 Vaihingen / Enz, Germany
Phone: +49 7042 8359-0
Fax: +49 7042 8359-10
E-mail: pwv@peter-wolters.com
PETER WOLTERS France
Philippe Lucas
38, Rue du Belvédère
78750 Mareil Marly, France
Phone: +33 1 39 58 48 11
Fax: +33 1 39 58 48 66
E-mail: p.lucas@peter-wolters.com
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PETER WOLTERS UK
Menston, Great Britain
PETER WOLTERS of America Inc.
Des Plaines (Chicago), Illinois, USA
PETER WOLTERS France
Mareil Marly, France
PETER WOLTERS of America Inc.
Plainville, Massachusetts, USA
PETER WOLTERS GmbH
Rendsburg, Germany
PETER WOLTERS UK
David Ross
19, Viewlands Mount, Menston, Ilkley,
West Yorkshire, LS29 6BJ, Great Britain
Phone: +44 1943 872050
Fax: +44 1943 872050
E-mail: d.ross@peter-wolters.com
PETER WOLTERS of America Inc.
509 N. Third Avenue
Des Plaines (Chicago)
IL 60016 - 1196, USA
Phone: +1 847 803 3200
Fax: +1 847 803 9875
E-mail: pwa_sales@peter-wolters.com
PETER WOLTERS of America Inc.
P.O. Box 1585 / 14 High Street
Plainville
Massachusetts 02762, USA
Phone: +1 508 695 7151
Fax: +1 508 695 7154
E-mail: pwa_sales@peter-wolters.com
PETER WOLTERS GmbH
– Niederlassung Sued –
Vaihingen / Enz, Germany
PETER WOLTERS India
Chennai, India
PETER WOLTERS Subsidiaries
LAM RESEARCH Subsidiaries
PETER WOLTERS Representatives
PETER WOLTERS Japan Co., Ltd.
Daisho Bldg., 6th floor, Room 601
12-28, Esaka-cho 1-chome
Suita-shi, Osaka 564-0063, Japan
Phone: +81 6 6821 7024
Fax: +81 6 6821 7031
E-mail: pwj_sales@peter-wolters.com
PETER WOLTERS GmbH Shanghai Office
Unit 10 SOHO Building, 439 Chun Xiao Road
Pudong New Area
Shanghai 201203, P.R. China
Phone: +86 21 5080 2056
Fax: +86 21 5080 2953
E-mail: pwcn_sales@peter-wolters.com
PETER WOLTERS China
Shanghai, China
PETER WOLTERS Precision Solutions (India) Pvt. Ltd.
# 7 / 17, G.S.T. Road
St. Thomas Mount
Chennai - 600 016, India
Phone: +91 44 2233 3451 / 3452
Fax: +91 44 2233 3453
2012 /
E-mail: g.ramesh@peter-wolters.com 5
www.peter-wolters.com
PETER WOLTERS Japan
Osaka, Japan