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العنوان
CAM system for CNC wire cutting machine tools /
المؤلف
Ibrahim, Hamdy Tawfic Mohammed.
هيئة الاعداد
باحث / حمدي توفيق محمد إبراهيم
مشرف / توفيق توفيق الميداني
مشرف / أحمد عبدالفتاح مصطفي القيران
باحث / حمدي توفيق محمد إبراهيم
الموضوع
CNC Wire Cutting Machine Tools.
تاريخ النشر
1999.
عدد الصفحات
127 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة الميكانيكية
تاريخ الإجازة
1/1/1999
مكان الإجازة
جامعة المنصورة - كلية الهندسة - الهندسة الميكانيكية
الفهرس
Only 14 pages are availabe for public view

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Abstract

Wire cUlling process is wide ly used for making stamping dies, tools,
templates, extrusion dies, and progressive dies. It is also used for prototype
production of parts to be made later by die stamping or CNC milling.
The wire-EDM programming starts with a manual method. With the
increased use of NC sys.tems and growth in complexity of production the
manual programming became a tedious work, time consuming. The manual
method depends to a very great extent on the experience of the operator,
which leads to many human errors. So, the part programmer was no longer
able to calculate efficiently the required tool path, and the use of CAM
systems as an aid to part programming became a necessity.
Many trails have been carried out to develop the wire-EDM
programming methods. But, applications of many wire-EDM techniques in
these m.ethods are not satisfactory and have different shortages. For
example, generation of standard radius, sequence of wire path, fixation
stabi lity, No-Core cut, etc.
TIlliS, the objective of this thesis is to design a CAM system to
sequence the wire path in a way to minimize the programming time, and
generating the standard radius. No-Core cut, fixat ion stability, and
optimizing the wire cutting process can be achieved through the proposed
CAM system.
Some of the wire-EDM techniques such as, making the conical
xv
cutting, trim cut, and calculating the optimum location for the threading
point of th e wire, are also achieved through the proposed system.
Through different applications of the proposed system, the results
show a great saving in programming time, user effort, high precision for all
steps of the cutting process, and a powerful monitoring. The proposed
system uses an advanced simulating module for verifying cutting process,
and to minimize calculation errors.
The thesis consists of five chapters. Chapler one presents an
introduction to the wire-EpM cutting process, wire-EDM machine tools,
and the applications of the wire-EDM process. Also, the illustrations of the
more relevant works as a literature survey finally the aim of this work.
Chapler two contains the details of the wire-EDM cutting process and
some of the wire-EDM techniques such as, standard radius, No-Core cut,
taper cut, trim cut, etc. Chapler Ihree presents in detai ls the structure, the
information flow, the main algorithm, and the flow charts of the proposed
system. Chapler fOllr introduces the applications of the proposed system
compared with LAMA, EasyCut and contains the output data of the
proposed system. Chapler five illustrates the main results, conclusions and
0,. future work. Finally, the References were listed.
Three appendices and the Arabic Summary have be.en provided in this
thesis. Appendix A contains the ISO codes of the wire cutting. Appendix B
contains j.Jlustration of the main technology codes. Appendix C offers the
main functions of the job file.