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A study of process planning for metal cutting
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för industriell produktion.
2009 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)Alternativ tittel
En studie av produktionsberedning för skärande bearbetning (svensk)
Abstract [en]

Process planning as a function for competitiveness is often neglected. However, as an intermediary between product development and manufacturing, it holds a key function in transforming product specifications and requirements into a producible process plan. Demands and requirements should be met concurrently as manufacturing costs and lead times are minimised. The focus of this thesis is the act of process planning, where the use of better methodologies, computer-aids and performance measurements are essential parts. Since process planning has the function of transforming demands and requirements, changing customer and regulative requirements are vital to regard. Since environmentally benign products and production increases in importance, the research presented in this thesis includes a CNC machining cost model, which relates machining costs to energy consumption.  The presented results in this thesis are based on quantitative and qualitative studies in the metal working industry.

 

This thesis has contributed to an enhanced understanding of process planning to achieve better performance and important areas for improvements. Despite a 50 year history of computerised process planning aids, few of these are used in the industry, where manual process planning activities are more common. Process planning aids should be developed around the process planner so that non-value adding activities, such as information management and documentation are minimised in order to allow more resources for value adding activities, such as decision making. This thesis presents a study of systematic process planning in relation to perceived efficiency. This correlation could however not be verified, which opens up for further studies of other possible explanations for process planning efficiency. Process planning improvements in the industry are difficult to make, since there is little focus on process planning activities and limited knowledge about actual performance hereof. This means that measures taken regarding process planning development are difficult to verify.

sted, utgiver, år, opplag, sider
Göteborg: Chalmers Reproservice , 2009. , s. 52
Serie
Technical report (Department of Materials and Manufacturing Technology, Chalmers University of Technology), ISSN 1652-8891 ; 59
Emneord [en]
Process planning, CAPP, CAM, efficiency, performance, green manufacturing, sustainable machining, CNC, Produktionsberedning, effektivitet, grön tillverkning
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-2147OAI: oai:DiVA.org:hv-2147DiVA, id: diva2:287594
Presentation
2009-12-17, Gamma/delta, Hörsalsvägen 7, Chalmers, Göteborg, 10:00 (engelsk)
Opponent
Veileder
Prosjekter
NFFP4Tilgjengelig fra: 2010-03-30 Laget: 2010-01-19 Sist oppdatert: 2020-03-11bibliografisk kontrollert
Delarbeid
1. Production preparation methodology in Swedish metal working industry - a State of the Art investigation
Åpne denne publikasjonen i ny fane eller vindu >>Production preparation methodology in Swedish metal working industry - a State of the Art investigation
2008 (engelsk)Inngår i: Swedish Production Symposium, Stockholm 18-20 November 2008. Proceedings: The Swedish Production Academy's annual conference / [ed] Bengt Lindberg och Johan Stahre, Stockholm: The Swedish Production Academy , 2008, s. 443-450Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

This article presents a brief state of the art in the Swedish metal working industry regarding the production preparation process for the machine centre. The article is based on a relationship model from which a questionnaire was developed. The model incorporates the perceived preparation process efficiency, the amount of systematic preparation work, in relation to the companies’ premises as possible causes. The investigation is based on a general hypothesis that a more systematic approach in the preparation process leads to higher preparation process efficiency. This hypothesis was supplemented by two more hypotheses and additional analyses to create an understanding of the situation. The main finding in this investigation is that there appear to be no relationship between increased  ystematic preparation work and perception of higher preparation efficiency. The investigation also indicates that many metal working companies have little knowledge about the performance of their preparation process and that there is an efficiency improvement potential of nearly 30%.

sted, utgiver, år, opplag, sider
Stockholm: The Swedish Production Academy, 2008
Emneord
Production preparation, methodologies, Metal working industry
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-1937 (URN)
Konferanse
Swedish Production Symposium, Stockholm 18-20 November 2008
Prosjekter
NFFP4
Tilgjengelig fra: 2012-01-04 Laget: 2009-11-11 Sist oppdatert: 2020-03-16bibliografisk kontrollert
2. CNC machining process planning productivity – a qualitative survey
Åpne denne publikasjonen i ny fane eller vindu >>CNC machining process planning productivity – a qualitative survey
2009 (engelsk)Inngår i: Proceedings of The International 3'rd Swedish Production Symposium, SPS 09, 2009, s. 228-235Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Process planning is the link between design and manufacturing and consequently an important function, since it influences many of the company objectives. However, many companies have little knowledge about their process planning function and the efficiency is thus not optimal. The paper focuses on the automation level of process planning as a mean to improve process planning efficiency. Six CNC machining companies was interviewed and accordingly analysed through a five dimensional automation level model to understand their process planning work. The main findings are that the automation level is low and concurrent engineering is lacking in many of the investigated companies.

Emneord
Process Planning, Efficiency, CAPP, PLM, CAM
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-2144 (URN)978-91-633-6006-0 (ISBN)
Prosjekter
NFFP4
Tilgjengelig fra: 2011-10-24 Laget: 2010-01-19 Sist oppdatert: 2020-03-16bibliografisk kontrollert
3. A survey of metal working companies’ readiness for process planning performance measurements
Åpne denne publikasjonen i ny fane eller vindu >>A survey of metal working companies’ readiness for process planning performance measurements
2009 (engelsk)Inngår i: IEEE International Conference on Industrial Engineering and Engineering Management, IEEM 8-11 sep, 2009, Hong-Kong, 2009, s. 1910-1914Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The paper presents an investigation regarding the potential and the readiness for implementing performance indicators and performance measurement systems of the process planning work for metal working companies. The paper is based on a questionnaire survey distributed to process planners in the Swedish metal working industry. The main outcome of the investigation is a foundation for understanding the implementation of performance measures of the process planning work for CNC machining. The survey revealed a few strengths and short comings in the studied companies.

Emneord
Process planning, Performance measurements
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-2146 (URN)10.1109/IEEM.2009.5373205 (DOI)978-1-4244-4870-8 (ISBN)
Prosjekter
NFFP4
Tilgjengelig fra: 2010-01-19 Laget: 2010-01-19 Sist oppdatert: 2020-03-16bibliografisk kontrollert
4. Green machining: improving the bottom line
Åpne denne publikasjonen i ny fane eller vindu >>Green machining: improving the bottom line
2009 (engelsk)Konferansepaper, Oral presentation only (Annet vitenskapelig)
Abstract [en]

The aim of this paper is to present how Green machining can be established in the metal working industry for taking immediate actions towards a more environmental friendly manufacturing, but also to address areas for research in order to advance towards a more sustainable manufacturing industry. An often overlooked approach is to use the knowledge about the specific cutting energy and its dependency upon machining parameters in order to establish a machining strategy that leads towards a more energy efficient production, but also contributes to increased productivity and thereby improving the bottom line as well. The paper has a production preparation perspective and thus presents the areas where a green machining strategy is applicable.

sted, utgiver, år, opplag, sider
Kairo: , 2009
Emneord
Environmental machining, Productivity, Energy efficiency
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-1938 (URN)978-0-9783187-2-7 (ISBN)
Konferanse
16th CIRP International Conference on Life cycle Engineering, 4-6 May 2009
Prosjekter
NFFP4
Tilgjengelig fra: 2012-06-27 Laget: 2009-11-11 Sist oppdatert: 2020-03-16bibliografisk kontrollert

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