An integrated process planning and robust fixture design system 1

... development of an integrated process planning and robust fixture design environment for cast and forged parts, and this integration simultaneously optimizes the product and its manufacturing processes ... understanding of the relationship and interaction between fixture planning, product design and process planning, i.e., no clear knowledge link between desi...

Ngày tải lên: 11/09/2015, 09:16

... integration of design and manufacturing, which uses the above-mentioned three approaches 2. 3 Set-up Planning Set-up planning is a function of both process planning and fixture design (Ong and Nee, ... Heuristic-based and numerical optimization Ong et al (20 02) √ Boerma and Kals (1988) Zhang et al (1996) Huang et al (1997) Wu and Chang (1998) Zhang and Lin (1999)...

Ngày tải lên: 11/09/2015, 09:16

... features and machine resource features, are defined to integrate the process planning and robust fixturing design processes Integrative features, in the manufacturing view, represent shapes and technological ... set-up planning, tolerance planning and optimal set-up planning During the preliminary set-up planning stage, each machining feature is assigned certain machine...

Ngày tải lên: 11/09/2015, 09:16

... information can be used by the downstream processes such as set-up planning and machine resource planning Thus, machining features have sufficient information for the integration of design and manufacturing ... and H7), four through holes (H1, H2, H3 and H4) and the base plane (P1) The raw part model and the final part model input into the system are modeled on the Invento...

Ngày tải lên: 11/09/2015, 09:16

... Set-up Planning 5. 2 5. 2.1 Set-up Planning System Consideration of Design Specifications Set-up planning should satisfy the design specifications, i.e., geometric, dimensional and tolerance requirements, ... tolerances will lead to an increase of the manufacturing lead time and production costs and should be taken into consideration during set-up planning 85 Chapter...

Ngày tải lên: 11/09/2015, 09:16

... Figure 6. 4(a) and 6. 4(b) parent1 5 6 40 65 23 55 Parent2 5 6 32 93 10 60 5 6 40 65 10 60 5 32 93 23 55 child1 child2 (a) crossover at point level (right side) parent1 5 6 40 65 23 55 Parent2 5 6 32 ... ACO and GA are employed, and the simulation results are compared Through the two approaches, Pareto sets of robust fixture layouts can be obtained 117 Chapter Robu...

Ngày tải lên: 11/09/2015, 09:16

... the product and set-up planning stage can reduce the development cost and lead time to ensure significant improvements in process and product quality This can also lead to significant reduction ... time for fixture design and fabrication and eliminate the trial -and- error testing procedures typically used by the tooling engineers 7. 1.2 Optimal Set-up Planning The optima...

Ngày tải lên: 11/09/2015, 09:16

... of the process 50 Figure Grinding cycle evolution with feeds and sparkout: (a) Deflection (b) Real radius of workpiece (blue) and programmed position for the wheel (black) OPTIMAL CYCLE DESIGN ... cylindrical grinding processes Two possible criteria can be used to design a centerless grinding cycle: 1) Minimise the process cycle time or 2) Adjust the cycle to a prev...

Ngày tải lên: 22/03/2014, 11:20

... ran the simulations, produced the output tables and figures, and drafted the manuscript, JG conceived of the study and participated in its design and coordination and edited the manuscript, and ... households and those with infected members, but also with the uninfected and higher income households, who stand to benefit from faster economic growth and rising incomes Thes...

Ngày tải lên: 20/06/2014, 08:20

... Efficient packing in cartons c Stacking for transport Transport a Maintaining ‘cool chain’ b Minimizing damage – rice straw etc c Reliable delivery Supply Chain Links a ASINCV, RIVAF and province level ... farmers/suppliers (including training) Quality standards required, based on Metro specifications Food safety requirements, based on international standards TRAINING: ASINCV and RIFA...

Ngày tải lên: 21/06/2014, 04:20

... this study, we measured the incremental costs of setting-up and implementing an integrated surveillance and response strategy in Burkina Faso, Eritrea and Mali In each country, the cost of IDSR ... Appendix _ Cost Analysis of IDSR Appendix List of IDSR priority diseases and diseases of public health importance weekly or monthly reported in Burkina, Eritre...

Ngày tải lên: 13/08/2014, 11:22

... Interface IMOEA Incrementing MO Evolutionary Algorithm IPPSP Integrated Process Planning and Scheduling Problem xiii IPPS Integrated Process Planning and Scheduling approach JNI Java Native Interface ... of integrating the process planning and scheduling owns the following characteristics Firstly, as both process planning and scheduling are NP-hard combinatoria...

Ngày tải lên: 11/09/2015, 10:15

... Shortest Processing Time TAD Tool Access Direction viii SUMMARY This thesis presents a dynamic system for the integration of process planning and scheduling by exploring the flexibility of process planning ... these problems and to achieve satisfactory schedules, the integration of process planning and scheduling becomes essential Thus, adopting the i...

Ngày tải lên: 08/11/2015, 16:30

... (a)-(d) and the estimated p( j) with the optimal values of two parameters (e), (f) 13 15 14 16 Self Applications and Novel Achievements Self Organizing Maps - Organising Maps, NewAlgorithm Design ... 21( a2) and (b2), and the importance of input variable No is the 18 20 Self Applications and Novel Achievements Self Organizing Maps - Organising Maps,...

Ngày tải lên: 20/06/2014, 07:20