A case-based reasoning approach for design of machining fixture

Hashemi, Heidar; Shaharoun, Awaluddin Mohamed; Izman, S.

doi:10.1007/s00170-014-5930-4

Cited by 41 publications

(12 citation statements)

References 22 publications

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“…According to Kotliar et al (2019), the share of fixtures in the total amount of tooling is 70-80%. Hashemi, Shaharoun and Sudin (2014) proved that the production costs for the design and manufacture of fixtures could reach 90%. Bi and Zhang (2001) reported that costs of fixtures comprise 10-20% of the total costs of manufacturing systems.…”

Section: Literature Reviewmentioning

confidence: 99%

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Ivanov

Liaposhchenko

Denysenko

et al. 2021

Engineering Management in Production and Services

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The first-priority directions for modern engineering, especially for multiproduct manufacturing, include the intensification of manufacturing processes, increasing the efficiency of technological equipment, and reducing the time required to implement technological solutions. Fixture design is a complicated and time-consuming process that requires considering many parameters of the closed-loop technological system “machine tool — fixture — cutting tool — workpiece”. One machined part can have several fixture layouts corresponding to all specified parameters; however, their effectiveness differs depending on production conditions. Search for an optimal fixture for specified production conditions is an essential stage of production planning. It has been proved that the efficiency of a manufacturing process should be assessed using single economic indicator — the cost of machining, which considers the costs of time, the total costs for process realisation, and a batch of parts. The paper aims to substantiate the efficiency of manufacturing processes in machining complex parts using flexible fixtures by developing a mathematical model that considers the cost of time, the cost of implementing the manufacturing process, and the batch value of parts production. This approach estimates the efficiency of manufacturing processes for machining complex parts and choosing the flexible fixture layout that corresponds to specific production conditions. It was proved that flexible fixtures could be effectively used for machining small batches of parts with frequent readjustments to new workpieces and short-term machining. A tendency has been established that the higher number of nomenclature of parts contributes to expanding the scope of the effective use of flexible fixtures.

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Section: Literature Reviewmentioning

confidence: 99%

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Ivanov

Liaposhchenko

Denysenko

et al. 2021

Engineering Management in Production and Services

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show abstract

“…Tools have been developed to optimize a xture layout by setting up a set of scoring systems to evaluate the xture [8]. Some of the programs explored the option of reusing previous xture designs from a database, also known as using the Case-Based Reasoning (CBR) approach [6,1]. This process is initiated with the selection of the base template from a set of previous cases.…”

Section: State Of the Artmentioning

confidence: 99%

Automated Fixture Design using an Imprint-based Design Approach and Optimisation in Simulation

Schwartz

Ellekilde

Krüger

2019

IJRC

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Object aligning and holding fixtures for robotic assembly tasks are important in industry in order to successfully complete an assembly. However, the designing of a fixture is usually done manually which can be a long and tedious process including many iterations, even for experienced engineers. This paper presents a method to design fixtures automatically for use in robotic assemblies and pick-and-place tasks. To achieve this, a new automated method to design the cut-out for a fixture is introduced. The method uses a parameterized version of the object's imprint to design the cut-out. The fixtures generated using this method are optimized in simulations to determine their final parameters for a specific application. Dynamic simulations are used to evaluate each iteration of the cut-out. Lastly, the method is applied to a use-case from the industry to design a fixture for use in a robotic assembly task.

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“…Based on retrieved models, an evolutionary method is presented to generate a new fixture. Hashemi et al [18] proposed fixture design case indexing approach with a two-step case retrieval. The appropriate workpiece in the first level of database by using design requirement was found.…”

Section: Introductionmentioning

confidence: 99%

Fixtures Design for Thin-Walled Cylindrical Workpieces on the Principles of Group Technology

Vukelić¹,

Sokac²,

Budak³

et al. 2019

J. Prod. Eng.

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This paper presents the methodology for fixture design based on the principles of group technology. The combination of the geometry-based and knowledge-based methods was used to develop a system for fixture design. The presented case study shows the implementation of the methodology for the inspection operations of the characteristic dimensions of the aluminium caps on a coordinate measuring machine.Projektovanje pribora za tankozidne cilindrične delove na principima grupne tehnologije. U radu je prikazana metodologija za projektovanje pribora zasnovana na principima grupne tehnologije. Кombinacija metode zasnovane na geometriji i metode zasnovane na znanju je upotrebljena za razvoj sistema za projektovanje pribora. U studiji slučaja je prikazana implementacija metodologije za operacije inspekcije karakterističnih dimenzija zatvarača na koordinatnoj mernoj mašini.

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A case-based reasoning approach for design of machining fixture

Cited by 41 publications

References 22 publications

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Ensuring economic efficiency of flexible fixtures in multiproduct manufacturing

Automated Fixture Design using an Imprint-based Design Approach and Optimisation in Simulation

Fixtures Design for Thin-Walled Cylindrical Workpieces on the Principles of Group Technology

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