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COMPUTER AIDED DRAFTING AND DESIGN
A SABBATICAL REPORT
by: David A, Dobbs
date: February 28, 1988
Submitted to: Helen McCauslin
Dean of Instruction
STATEMENT OF PURPOSE
The intent of my sabbatical was to enable me to accomplish the
following: strengthen my knowledge of Computer Aided Drafting and
Design CC.A.D.D.); seek out other approaches to curriculum design; and
locate and review new instructional materials.
Objectives accomplished and activities performed.
I. To strengthen my knowledge of C.A.D.D..
To meet this objective, I read six C.A.D.D. or C.A.D.D./C.A.M.
books, numerous periodicals, articles and vendor materials.
Seminar or training activities that were accomplished include:
1. Three days training on CADAM (a two and one -halF D indu5trial
quality C.A.D.D. production system) at STEELCASE in Grand
Rapids.
2. One day training on an Intergraph 3D system at Dow Corning
in Midland, Michigan.
3. Two days training at Sinclair Community College in Dayton,
Ohio. Here I was taught to operate a 3D software package
called CAD-KEY.
% Trade shows that I attended were Autofact in Detroit, where I spent
two days reviewing hardware, software and systems offered by major
manufacturers. Also, in Detroit I attended a trade show sponsored by
Inacomp C a large vendor of computers and computer related technology.
It was called _the ONE COMPUTER SHOW. At the show, I was able to
attend a presentation on desktop publishing For the First time.
As a result of a contact made at Autofact, I was able to attend a
presentation at Oakland Community College (Auburn Campus) in their
hi-tech facility. This was both enlightening and depressing . I was
enlightened because I saw First hand an example of a well established
hi tech center. In contrast, though this event was promoted at
AutoFact, there was little interest (almost nonexistent) shown by
industry. Approximately eight people, including myself and a student.
attended this event. Does this say something about High Tech
Centers?
Another event, though not specified in my sabbatical proposal, that I
attended was Trends in Occupational Education, A conference at ACME,
(Traverse City), Michigan on October 7,8,and 9. Here I attended
several meetings of key interest to me. These included CAD/CAM
Instructional Considerations by Don Boyer of Grand Rapids Junior
College; Sketching Using CAD software by Phillip T. Stickell of C.S.
Mott Community. College and Microcomputer Applications - The Blossoming
of a Rose by Marilyn K Popyk of Henry Ford Community College.
• II. To seek other approaches to Curriculum Design.
While a minimum of six educational institutions was specified in my
plan, I made on-site visits to ten community colleges, one state
college and a skills center. Data sheets summarizing my visits to
selected sites are attached. The interest here was to see how others
were implementing this new technology referred to as C.A.D.D.. This
aspect of my sabbatical enabled me to establish a global perspective
of C.A.D.D./C.A.M..
Sites that I visited:
1. Community College of Rhode Island, Warwick, R.I.
2. C.S. Mott Community College, Flint, Michigan.
3. State Technical Institute, Knoxville, Ky.
Li. Glendale Community college, Phoenix, Arizona.
S. GMI Engineering and Management Institute, Flint, Michigan.
mmunity College, Downriver Campus, Detroit, 6. Wayne County Co
Michigan.
7. Oakland Community College, Auburn, Michigan.
B. Sinclair Community College, Dayton, Ohio
9. Ferris State College, Big Rapids, Michigan.
10. Uan Buren Skills Center, Lawrence, Michigan.
11. Western Michigan University
•
Selection of these institutions was a result of library
research,professional contacts made at other events, and Family events
Cweddings) that occurred in other states. My selection of out of
state sites in two instances CPhoenix, Arizona and Warwick, R.I. was
made as a result of our own L.R.C. and the capable assistance of Mr.
Gene Radtke. Here I was able to find data about colleges
Cspecifically-program offerings) in other states and to follow -up
using our micro-fich collection of college catalogs. Through this
sabbatical I was reminded of the usefulness and the wealth of
information available in such a resource.
III. To locate and review new Instructional Materials.
There is a noticable absence of new texts for 1987 relating to
CAD/CAM or CAD. Several recent texts that appeared to be
appropriate were suggested as new acquisitions to our L.R.C.
Both were in our collection.
Other attempts at reviewing and collecting new materials for the
department met with more success. Specifically, I received a free
copy of CAD-KEY Ca 3-D Drafting package) software and with the
assistance of our computer staff was able to get it up and running on
our hardware. Also, I sent for and received an introductary copy of
Junior Drafter C a 2-D drafting package). This has also been reviewed
but has not been Fully explored because of a lack of a suitable system
Ccomputer peripherals). The last software package that I have just
received!is Microstation by Intergraph. Any immediate review of this
package is doubtful due to the necessity of getting ready for the
4 .•
.w winter term.
One of my first attempts at gathering data was to contact the Michigan
Vocational Education Resource Center at Michigan State University.
The results were disappointing, overall, as many of the resources were
too old to be of current value. Several bright spots did exist
however. I received a fifty page overview of Desktop Publishing that
I have distributed to the Media Center, Drafting and Art departments,
and the apprenticeship coordinator.
Next, I was able to obtain an outline by Don Boyer of Grand Rapids
Community College entitled PROGRAM DEVELOPMENT FOR CAD/CAM TECHNICIANS
BASED ON AN OCCUPATIONAL ANALYSIS His study provides insight into
"competencies necessary to perform the job of CAD/CAM technicians".
The National Center for Research in Vocational Education, at Ohio
State University sent me their brochure and I have ordered Preparing
• CAD/Cam Programs. As of this writing, it has for High Technology
not been received. The abstract offers promise of relevent data but,
its validity is questionable because it was published in 1983. Why is
it suspect? In the last several years microcomputers in CAD and
CAD/CAM have become extremely powerful and useful as engineering
tools, not just in drafting. Today we are on the verge of running
multiple workstations off one micro-computer. When this document
arrives I will share it with the Center and others as appropriate.
The Center for Occupational Research and Development (CORD) has been
recently contacted for CAD curriculum materials. This too is minimal
• •
and veru disappointing.
One new text/workbook that has impressed me and has been recommended
to the department is Using Cadkey by Paul Resitarits. It is unique in
that it contains floppy disk exercises that students can work on and ......
that are keyed to the text/workbook. Thus instructors as well as
students may learn 3-D CAD using self-paced materials.
A new audio-visual package was discovered and ordered for preview in
early December. It has not arrived as yet. The title is the I.B.M.
P.C. explained. It was ordered from Bergwell Productions, Inc. It
too will be previewed and shared with the department. It is hoped
that this video will assist in teaching CAD students about computers
and about MS-DOS. If these conditions are met, it will be ordered for
the L.R.C.
CONCLUSIONS DRAWN FROM THESE ACTIVITIES
As a direct result of my sabbatical, I have grown ten fold over the
last four months. My perspective of CAD in the community college is
much more accurate. Terms such as buffer, baud rate, MS-DOS,
algorithm, EPROM and coons patch to mention only a few are more
comfortably understood. This is important to me because we must be
able to evaluate what software and hardware vendors are saying and
selling.
Our C.A.D. curriculum components are about average in course numbers
offered, degree of difficulty, prequisites, and depth of content.
Most institutions offer two C.A.D. courses, basic and advanced.
Glendale Community College near Phoenix, Arizona offers a Computer
Graphics course to anyone who wants it. The course is very basic and
some Geometry and Drafting must be taught in it. This could be a
tremendous boost to our S.C.H.'s but, there . is a catch. We need more
work stations and a low level Cfortunately less expensive) software.
This is an exciting concept and may be a good way to promote interest
in Drafting and Design, as well as other high-tech Fields.
Regarding equipment, in this observers estimation, we are less well
equipped Cworkstations and software) than these selected sites. CSee
hardware summary at the end of report.) One example close to home is
the Van Buren Skills Center. The Center has 21 new stations using
UersaCad, a contemporary software package. We currently are using a
rather obsolete software. Another limiting Factor is that Drafting
and Machine Tool are using the same hardware. While our equipment
utilization Figures are excellent, our Flexibility and expansion of
both day and night courses is non-existent.
Some of the better equipped schools, such as State Tech-Knoxville,
Sinclair Community College -Dayton and GMI-Flint are offering CAD
instruction on two or more hardware and software configurations.
Also, several of the more progressive schools are teaching several
operating systems (Unix and MS DOS) and at least one is teaching
programming and system customization.
Kalamazoo Valley Community College must, if it is to remain current in
technical edUcation, invest in many more microcomputers to support the
various occupational areas. The microcomputer is the key to survival
for the small design and manufacturing companies. Even the larger
companies are adding significant numbers of micros to Free up the
mainframes. The trend is clear For all to see. Do we want to
continue to be part of it?
Specific recommendations include:
1.expanding the current CAD/CAM lab to 22 stations.
2.teach a minimum of two CADD software packages.
3.As soon as Feasible add a new CAM lab and workstations (22
stations) with consideration for electronic linkage to the
CADD lab.
Li, hire consultants or use special advisory committees who may
advise us regarding "true CAD/CAM needs" and implementing a
timetable.
S. plan on a gradual phase - in of more micros into the standard
drafting and design labs.
THANKS!! IT WAS GREAT!
HARDWARE SUMMARY
Numbers of CAD workstations Cactual or estimated) by institution
Van Buren Skills Center 21
Western Michigan University SO C+SO additional this year)
Mott Community College, Flint 9 C2q to be added next year)
GMI, Flint SO
Sinclair Community College, Dayton, 0. 36+
C.C. OF Rhode Island, Warwick, R.I. 1S
Wayne Co. Community College, Detroit 10-12 Cmore on order)
Glendale C.C., Phoenix, Ariz. 3S
State Technical Institute, 2q-30
Knoxville, Tennessee
‘. BIBLIOGRAPHY
1. McKissick, Michael Landon. Computer -Aided Drafting and Design.
Englewood Cliffs, New Jersey: Prentice Hall, Inc. 1987.
An excellent textbook For new students to computers and CAD. All
commands are in generic Form; includes 3-D, CIM overview, and new
directions in CADD. Good summary and pertinent questions at the end
of each chapter. Highly recommended For DRT 150 and 250. Hard cover,
2q8 pages.
2. Schildt, Herbert. DOS Made Easy.
Berkley, California: McGraw Hill, 1988.
A superior self study text for learning PC-DOS and MS-DOS . Includes
the basics of computers. Sample directories are given For input with
commands to manage them. also, includes a quick command reference
guide. Clearly written. Paperback, 286 pages.
3. Lange, Jerome C.. Interactive Computer Graphics Applied to
Mechanical Drafting and Design.
New York, N.Y.: John Wiley and Sons, 198q.
Good introductory chapter. Menu commnds are in generic format and CRT
screen is shown in before and after command sequence. Teaches some
drafting as well as CAD. Includes a Descriptive Geometry chapter.
Good illustrations and examples, but is a bit outdated now.
Li. Bowman, Daniel J.. Understanding CAD/CAM.
Indianapolis, Indiana: Howard W. Sams and Co., 1987.
Excellent instructor reference in paperback form. Too technical in
half of the chapters. A very comprehensive glossary is included.
Chapter 9, CAD and the Personal Computer, may be useful as outside
reading for DRT 250.
5. Teicholz, Eric. CAD/CAM Handbook.
New York, N.Y.:Mc graw Hill, 1985.
A very good, comprehensive refrence book. Each chapter is written by
an expert in the field covered. The print is too small in this
oversized manual. Actual case studies are presented to show various
applications of Cad/Cam. Several excellent overviews.
, SITE VISITATIONS AND REVIEWS
SITE: Wayne County Community College
DATE: October 26, 1967
CONTACT: Quill Pettway
FINDINGS: A lab with no day students. Program is affiliated with
Chrysler Corp. and must be taught off-times (nights) because oF the
use of Chryslers computers. This (shared and thus limited use) lab is
the danger oF partnerships. The lab also included 3 stations on-line
to Applicon that are too expensive and will be changed to stand alones
in the near Future.
Texronics hardware (approximately 6 stations) and QuickCon (Chrysler)
software were also used. The goal here appears to be CAD/Cam with a
link to the shop. Two courses Cby Chrysler instructors) are currently
in the catalog.
SITE: Glendale Community College
Phoenix, Ariz.
DATE: December 1, 1987
CONTACT: Dr- B
FINDINGS: Outstanding! Hi Tech facility had 336 micros in one room
and did not include the 26 drafting stations. Computers For drafting
included 12 XT's, 12 AT's, and 2 Compaq 386's. CIM (CAD/CAM) was not
offered.
A new course concept was found. It was called CAD for Everyone.
Students learned computer operation theory, drafting and basic
geometry. Two sections were offered this semester.
AutoCad and Computervision software were used in the 3 CAD courses-
2L-10.2S0 and 2SS. One observation: out of 6 C-U stations only 2 were
operational. It is felt that C-U is an overly complex software and
definitely not friendly.
CAD is currently not integrated into the other drafting courses.
Students do software customization including writing Auto exec.Bat
Files. The current lab will be reconfigured so that the instructor
will be able to see all CRT's easily. This is a most important
consideration.
SITE: Western Michigan University
DATE: October 30, 1987
CONTACT: Dr. Atkins
FINDINGS: Students do 2-D assignments then 3-D.
-Recommends assembling own systems as opposed to turnkey.
-Software: Cadkey, Technicad, Autocad, Applicon, Plot 10 and
Complot.
-Hardware: will add 50 new stations in 1966. Current estimate - 50
workstations. Zenith 286 hardware is popular.
-Cadkey users group is established in Kalamazoo area. Frank Lucatelli
contact. We will join this group.
Labs: -One lab - CAD shared with other segments of the college will
be doubled in size this year.
-One lab with 2ti CAD stations back to back with drafting
tables is being set up.
-One lab with Applicon set-up for industrial training with
approximately 10 stations.
Kalamazoo Christian and FabriKal has Cadkey. Half of Engineering
Graphics course - stresses Cadkey.
•
SITE: Mott Community College
DATE: November 12, 1987
CONTACT: Kermit B. Baker
FINDINGS: Mott Community College offers two CAD courses on six
Computervision workstations using CADDS q software. The First course
and Design Technology Program. The second is part of the Drafting
CADD course is elective. Mr. Baker has written his own instructional
materials, probably out of necessity.
The six systems will be replaced in the near future with 29
microcomputers. Software being considered are CADAM, AutoCad, and
Cadkey. Program courses in the Future would include 3 CAD courses and
Eight out of 16 courses in the program are drafting 5 manual courses. E
courses. A new lab for CAD will be added to replace the older smaller
lab.
SITE: State Technical Institute
Knoxville, Tennessee
DATE: November 6, 1987
CONTACT: George Cox/David Job
FINDINGS: This was one of the most impressive sites visited. The
Institute started with MATC-CAD on ten Apples; added one Cadlink; then
ten PC-AT'S with Computervision and Autocad. In 1965 the institute
added eight CIM (Computer Integrated Manufacturing) systems with Unix
operating systems. Since then, it has added nine Intergraph and a
second lab for them. Also received were six Sun Systems, but as of
this date no software for them.
Students get very limited instruction on Autocad then transfer to
Computervision and lastly to Intergraph. They are trained in Pascal
(programming) and Unix (operating system). Students preferred to work
on the Computervision systems instead of the Intergraph. They were
taught to change the output device switches when running the various
software packages on one system. Students began to use the C-U solids
modeling package in about the fifth week of the course.
Course descriptions in the catalog include only one CADD course.
According to the instructors, CADD has been integrated into the other
manual drafting courses. Program emphasis is architectural/structural
detailing and design.
SITE: Community College of Rhode Island
Warwick, Rhode Island
DATE: October 5, 1987
CONTACT: Robert DeLuca
FINDINGS: The Community College of Rhode Island uses a prepackaged
software called MATC-CAD that simulates Computervisions CADDS-3
language. Hardware includes about 12 Apple stations and one IBM-AT.
Other software includes Versacad, Cadkey, and Computervision. These
additional software packages are used for enrichment as opposed to
requirements for the program.
CAD and manual drafting are taught in separate but adjacent rooms.
One CAD course is offered in the Machine Design Program. A course
syllabus and catalog are on file in the CAD lab. A CAM software
package by Bartsch was mentioned at C.C.R.I. that is offered For to
education at 90% off the list price. It is being sent to our machine
tool people.
Several computer programs for gear calculations have been written by
the staff for use in other courses. No other computer integration is
currently being done.