The document describes a new web-based CAD/CAM system for designing and manufacturing gear cutting tools. The system was developed using modern software technologies to provide benefits like increased flexibility, accuracy, data management and reduced costs. It employs a parametric and modular design that is platform independent, easy to use and maintain, and can be accessed from anywhere via the web.

1. Knowledge
Transfer
Partnerships
KTP Associate: Anna Malahova (a.malahova@cranfield.ac.uk)
Web-based CAD/CAM for gear shaper cutters
New CAD/CAM system:
Benefits to the company:
Requires a lot of specialist knowledge and skills
No specialised CAD software available in the market
Demanding flexibility in producing customised cutters
Flexibility in design
Better accuracy
Improved data transfer, storage & retrieval
Wastage reduction
Lead time reduction
Increase sales
Employs novel analytical model of gearing
Platform independent solution
Easy integration with the rest infrastructure
Uses open standards and software
Easy to extend and maintain
Scalable and reliable
30.73
9.53 x 5.00
71.00
58.00
12.00
144.0020.00
2.00 R
3.00 R
31.27
17.00
4.00
30.00
16mmSI
74.4200 83.0300
74.4450 83.0679
74.4700 83.1058
74.4950 83.1437
74.5200 83.1815
74.5450 83.2194
74.5700 83.2573
74.6000
74.5000
74.6000
74.4261
83.3000
83.2000
83.2999
83.0509
102.7000 103.4500 104.2000 104.9500 105.7000
CUTTER OUTSIDE DIAMETER
GEAR ROOT DIAMETER GEAR CHAMFER DIAMETER
74.6000
84.6010
77.0915
83.3960
Gear involute
deviation graph
0.0000
0.1000
77.8352
83.3000
76.5753
76.7414
77.1636
77.8378
83.3007
84.6010
12.0x4.2keyslot,tooth
3.5
18.00
22.00
3.00 R
27.00
80.00
54.00
60.00
96.73
31.750
30.0
1.50R
15.0
5.0
10.00
CUTTER
Design strategies:
Entirely Web-based software system
Parametric design visualisation
Artificial intelligence elements for computations
Modular user interface
Project aim:
To develop and implement a
CAD/CAM system for gear
cutting tool design and
manufacture exploiting state
of the art hardware and
software technologies
Gear cutting tool design & manufacture:
Networked CAD classification:
Distributed CAD systems
Web-based systems integrated with proprietary CAD tools
Entirely Web-based CAD systems
Web-based vs standalone systems:
More managable and reliable
Better scalability
Portability
Less prone to crashing and creating technical problems
Usually cheaper to develop, deploy and maintain
Better data safety and availability from everywhere
Higher level of abstraction from client platform
Utilised technologies:
Python, TurboGears, PostgreSQL,
JavaScript, MochiKit, ExtJS, SVG
Duration: 2007 - 09
KTP Grant No. 6465
Academic Supervisor: Dr. A. Tiwari (a.tiwari@cranfield.ac.uk) Industrial Supervisor: R. Moorhouse (richard@dathan.co.uk)
CAD/CAM system diagram: