Chery Automóveis se apoia na qualidade para criar uma marca reconhecida mundialmente usando o Tecnomatix para garantir seus processos e assegurar seus produtos.

1. Tecnomatix
Chery Automobile Co., Ltd.
Quality drives Chinese automaker; on
route to creating a world-famous name
Tecnomatix software helps Chery diagnose and reduce design quality defects,
achieving significant savings for each problem found prior to manufacturing
Business challenges China, then the world Dimensional analysis
Improve product quality Chery Automobile Co., Ltd. (“Chery”) was Quality, which is closely linked to product
founded in 1997 by five state-owned performance, reliability, comfort, styling
Reduce production and
investment companies with an initial and the customer’s purchasing decision, is
maintenance costs
capitalization of RMB 3.2 billion (nearly at the core of Chery’s competitiveness.
Expand brand image; $500 million USD). Plant construction The company holds ISO 9001 and Rhine’s
strengthen competitiveness commenced in 1997 and the first car came ISO/TS16949 certifications. In recent years,
in the global market off the production line on December 18, it has initiated other quality control
1999. In August, 2007, the company’s procedures, including the establishment of
one-millionth car rolled out, signifying standards, strict project controls and new
Keys to success
Chery’s success in building an independent testing equipment and methods. To specif-
Dimensional tolerance Chinese brand. As China’s number-one ically address product quality, Chery has
analysis software that passenger vehicle exporter for seven implemented: 1) structural analysis,
simulates manufacturing and years, the company is now on its way to process assessments, product and process
assembly processes creating a world-famous name. design evaluation, and complete vehicle
Tecnomatix data in testing during the R&D stage; 2) process
lightweight JT format Chery currently owns four brands: Chery, review and control at the design phase;
Riich, Rely and Karry. Its product line and 3) the use of multiple testing
Siemens’ extensive
includes passenger vehicles, commercial
knowledge of dimensional
vehicles and mini cars. Chery presently
management and expertise
has the capability to produce
in implementation
900,000 vehicles and
engines, and 400,000
Results gearboxes per year.
Complete vehicle dimensional
analysis helps meet the
company’s product quality
targets
Production problems
identified early in the product
development cycle
Increased vehicle and process
optimization
Avoided errors, eliminating
rework time and costs
($150,000 saved on one mold)
Automotive and transportation

2. “We were impressed by the
powerful functionality of
Tecnomatix, as well as by
the fact that Siemens has an
engineering team in North
America dedicated to
dimensional analysis.”
Wu Shiqiang
Director
Process Technology
Department, Engineering
Planning & Design Institute I
Chery Automobile Co., Ltd.
methods, data analysis, and feedback at positioning and assembly methods meet
the production stage. technical specifications, and ultimately
suggest how to optimize these factors to
Dimensional analysis is one of the enhance the quality of body design.”
advanced concepts Chery implemented
after seeing how valuable this practice has Chery’s first dimensional analysis method
been to automobile assembly plants in was based on the 2D dimensional chain
developed countries. “A dimensional calculations, which can be inaccurate and
engineering team can help improve the do not work well for complex products
quality of the car body,” says Wu, Shiqiang, such as automobiles. That led them to look
director, Process Technology Department, for a better method, which turned out to
Engineering Planning and Design Institute be Tecnomatix® software with its Variation
I at Chery. “At the initial design stage, they Analysis (VSA) component, a powerful
can analyze whether the structure, dimensional analysis tool used to simulate
manufacturing and assembly processes
and predict the amounts and causes of
variation.
“After evaluating a number of possibilities,
we were impressed by the powerful
functionality of Tecnomatix, as well as by
the fact that Siemens has an engineering
team in North America dedicated to
dimensional analysis,” says Shiqiang. “We
were also aware that Siemens has been
collaborating with Ford over the years and
we believed that they could provide us
with valuable assistance. Those are the
reasons we chose Tecnomatix.”
Predicting problems before they happen
Chery uses Tecnomatix Variation Analysis
software for manufacturing and assembly
workflow simulations. The software
virtually performs the assembly process
and builds the dimensional chain for the
product. Using the Monte Carlo principle,

3. Solutions/Services it determines post-assembly dimensional
Tecnomatix errors and analyzes the factors causing the
www.siemens.com/ errors. “This lets us assess and optimize the
tecnomatix product design, configure part tolerance,
improve the positioning and assembly
JT
processes, and manage and take control
www.siemens.com/
of downstream manufacturing errors,”
plmcomponents
says Shiqiang.
Client’s primary business Tecnomatix is a 3D simulation system. It
creates a 3D model that includes tolerance Savings add up
Chery Automobile Co., Ltd.
distributions of parts and components, The implementation of Tecnomatix
is China’s largest indepen-
installation and positioning methods, the Variation Analysis software and
dent manufacturer of
assembly sequence, fixing methods, synchronized dimensional engineering
passenger cars.
accuracy requirements, and measurement significantly enhances Chery’s ability to
www.cheryinternational.com
plans and methods. It offers simulation predict problems prior to production. For
analysis results that closely reflect actual example, an assembly issue with one
Client location assembly conditions for complex shapes vehicle’s headlights was found during the
and relationships. An important factor analysis. Fixing the problem in software
Wuhu, Anhui Province
in the success of Tecnomatix in this before molds were made spared the
China
application is that the software uses the company the 1 million Yuan (around
lightweight JT™ data format. “The quantity $150,000 US) cost to modify a mold. “And
of data needed to represent a complete of course, this also eliminated delay in
vehicle is very large,” explains Shiqiang. manufacturing,” says Shiqiang.
“By using the JT format, Tecnomatix
reduces memory requirements by approx- Dimensional engineering provides a
imately 70 percent, speeding up the quality management collaboration
response of the system.” platform for engineers of different depart-
ments within Chery, including product
“From the beginning, we have had an design, engineering, manufacturing,
ambitious plan for quality improvement, fixture development, quality inspection,
including complete vehicle dimensional and quality control. So far, Chery has
analysis similar to what is done in North performed complete vehicle dimensional
America,” says Wu. “Since implementing analysis for a number of projects and has
Tecnomatix, we have gradually established established a collaboration mechanism
a comprehensive dimensional engineering between product design and process plan-
process beginning with preliminary ning. The Tecnomatix solution has enabled
benchmark analyses and the definition the company to analyze, assess and
of a dimensional technical specification, optimize vehicles in a systematic manner.
through to 3D virtual assembly and “The idea is to solve problems in the early
simulation, and quality control.” The stages and minimize the waste of time and
dimensional engineering team is mainly money,” says Shiqiang. To date, dimen-
responsible for dimensional analysis and sional engineering has been used for
quality control work for entire new Chery’s medium-to-high class vehicles. In
vehicles, but also works on changes made the future, the company plans to expand
to existing models. its use to all vehicle models.
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