Design Methodology for Mechatronic Active Fixtures with Movable Clamps

Papastathis, Thomas; Bakker, Otto Jan; Ratchev, Svetan; Popov, Atanas A.

doi:10.1016/j.procir.2012.07.056

Cited by 19 publications

(6 citation statements)

References 10 publications

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“…The fixturing system has an unprecedented degree of autonomy and the capacity to handle a wide variety of parts, including large and flexible thin sheets. Other existing systems still require human intervention in order to perform reconfiguration, and only very few are able to support flexible parts [37][38][39][40][41]. The new system has significant advantages over state-of-the-art RFAs or pintype systems; it has the potential to be a more agile, smarter, and cheaper industrial solution.…”

Section: Discussionmentioning

confidence: 99%

Task planning for cooperating self-reconfigurable mobile fixtures

Kasprzak

Zlatanov

Szynkiewicz

et al. 2013

Int J Adv Manuf Technol

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The work solves the problem of task and motion planning of a self-reconfigurable fixture system. A feasible solution is a key requirement for the viability of such systems, which have raised hopes of overcoming the deficiencies that more traditional fixtures are recognized to have in the dynamic conditions of modern manufacturing, with its increasing emphasis on flexibility, adaptability, and automation. The paper proposes an application-independent approach for the generation of a time-relevant action plan for the locomotion, reconfiguration, and positioning of two or more mobile robotic fixtures. The fixture agents need to provide local support for a large workpiece during machining. The path-planning problem is converted into a constraint satisfaction problem (CSP). The proposed approach is called Triple-CSP, as it applies an incremental state search to solve three hierarchical path-planning tasks for the three components of each mobile fixture agent: a supporting head, a mobile base, and a parallel manipulator. A final time-related trajectory (time scaling of actions) for the agents' entire task execution is obtained. Thus, the planner takes into account all the relevant physical, geometrical, and time-related constraints.

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Section: Discussionmentioning

confidence: 99%

Task planning for cooperating self-reconfigurable mobile fixtures

Kasprzak

Zlatanov

Szynkiewicz

et al. 2013

Int J Adv Manuf Technol

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show abstract

“…Thus the problem is converted from 3D to 2D. Papastathis et al [11] propose a fixturing solution, where not all clamps are static, some of them can change their position during machining, and this way increase the workpiece stability in case of thin-walled parts. Wan and Zhang [12], were also occupied with the problem of machining thin-walled parts.…”

Section: Literature Overviewmentioning

confidence: 99%

Fixture Design System with Automatic Generation and Modification of Complementary Elements for Modular

2015

APH

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Modular fixtures are usually built from standard elements that can be found in the modular element set of a certain manufacturer. But in some cases the user besides using these elements modifies some semi-finished elements that can also be found in the modular element set, or even the user produces some brand new elements. The motivation behind this can be to simplify the fixture, or to make the locating or clamping of a workpiece possible or more precise. This paper presents the methods of automatic generation, and if required, automatic modification of such new or semi-finished elements.

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“…Concerning electro-mechanic actuator, several mechatronic systems have been designed with the aim of adjustable and flexible fixture devices [2] [3]. In [4] and [5] an adaptronic chuck is presented for precision positioning in lathes together with an optical measurement system and control algorithms.…”

Section: State Of the Art On Clamping Technologiesmentioning

confidence: 99%

Adaptive Fixturing System for the Smart and Flexible Positioning of Large Volume Workpieces in the Wind-power Sector

et al. 2014

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Quality and productivity in a manufacturing process depend considerably on the toolkits used, whose basic functions are to position the component into a right position relative to the cutting tool and to hold the component tightly to avoid displacements during the machining. In this document the design of a smart and adaptive fixture is presented for the accurate positioning of a planet carrier with very strict requirements of tolerances and for an intelligent adjustment during the machining process when required. This device will allow the manufacturer reducing the manual inspections, automatizing the adjustment tasks and improving the machining process setup time, increasing consequently the productivity and achieving the required accuracy and the required geometrical quality of the part. The development of the intelligent fixturing will be focused mainly in the conception of a high precision actuator capable of moving the large part with the required tolerance. Moreover, a testbench has been developed that will allow validating the actuator, assuring therefore its applicability in the future industrialization of the fixture device.

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Design Methodology for Mechatronic Active Fixtures with Movable Clamps

Cited by 19 publications

References 10 publications

Task planning for cooperating self-reconfigurable mobile fixtures

Task planning for cooperating self-reconfigurable mobile fixtures

Fixture Design System with Automatic Generation and Modification of Complementary Elements for Modular

Adaptive Fixturing System for the Smart and Flexible Positioning of Large Volume Workpieces in the Wind-power Sector

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