By Topic

Assembly and Task Planning, 1997. ISATP 97., 1997 IEEE International Symposium on

7-9 Aug. 1997

Filter Results

Displaying Results 1 - 25 of 50
  • Proceedings of the 1997 IEEE International Symposium on Assembly and Task Planning (ISATP'97) - Towards Flexible and Agile Assembly and Manufacturing -

    Publication Year: 1997
    Request permission for commercial reuse | PDF file iconPDF (360 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1997, Page(s): 293
    Request permission for commercial reuse | PDF file iconPDF (73 KB)
    Freely Available from IEEE
  • Optimal sensor location design in automated coordinate checking fixtures

    Publication Year: 1997, Page(s):140 - 145
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    This article proposes a method for the optimal design of sensor locations in an automated coordinate checking fixture (CCF) used for at-machine assessments of the dimensional accuracy of manufactured automotive space frame components, From coordinate measurements obtained by the sensors, shape parameters of a formed space-frame extrusion are estimated. There are two main issues to be addressed, na... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Representing and generating operation sequences for manufacturing tasks

    Publication Year: 1997, Page(s):134 - 139
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    This paper deals with a system called TPMS (Task Planning for Manufacturing Systems). The main aim of this system is to automatically generate programs or sets of commands for robots, AGV, numerical control machines, etc, without spending much time programming the flexible manufacturing system components. The sequence of operations to be handled by the manufacturing system depends on the constrain... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Standardized assembly workstation embodiment for electromechanical products

    Publication Year: 1997, Page(s):128 - 133
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    The lack of information on assembly equipment represents one of the main obstacle for the integration of assembly concerns at an early stage of product design activity. The definition of standardized assembly equipment gives an answer to this problem and permits to reduce considerably the global lead time. This paper is related to the design of a new standardized assembly system developed in colla... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic tolerance analysis of multi operation manufacturing process

    Publication Year: 1997, Page(s):54 - 59
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    A component is typically produced through several machining processes in a manufacturing environment. Tolerance is assigned to each operation considering the inherent capabilities of the process and the blue print (B/P) requirements. The tolerance chart is a graphical representation of a process plan used to establish the link between interrelated machining operations, and defines a procedure to c... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Considering bills of material in hybrid flow shop scheduling problems

    Publication Year: 1997, Page(s):194 - 199
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    In this paper, we propose to take bills of material into account in hybrid flow shop scheduling problems. We study the scheduling of N jobs in a hybrid flow shop with V-stages and identical parallel machines. We also consider that the jobs are subject to precedence constraints. Job-precedence constraints enable the modeling of different processing units in a flow shop organization and also the mod... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Robotic assembly based in real-time communications equipment for factory LANs

    Publication Year: 1997, Page(s):122 - 127
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    Shop floor communications networks are evolving towards the increased use of open connecting equipment, that meets standard protocols, under a client/server architecture. An implementation of a such communications server, based in a low cost PC with multiport and field bus cards, is presented. The first prototype has been designed as a black box transparent to flexible manufacturing plants, connec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of the complexity of precedence graphs for assembly and task planning

    Publication Year: 1997, Page(s):19 - 24
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    This paper deals with a complete and correct method to compute how many plans exist for an assembly or processing task. Planning is a NP-hard problem and then, in some situations, the application of time consuming search methods must be avoided. However, up to now the computation of the exact number of alternative plans for any situation was not reported elsewhere. Notice that the complexity of th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • MAPP: a matrix architecture for process planning

    Publication Year: 1997, Page(s):48 - 53
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    The goal of this work is to devise a structured representation of manufacturing planning that captures both the sequence of processing steps and the data functions, such as tooling, fixturing, and setups. The difficulty in accomplishing this is that although processing steps are often strongly ordered, these steps do not follow neat functional boundaries between tools, fixtures, setups, etc. The s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transient state study for cyclic schedules: bounds and optimization

    Publication Year: 1997, Page(s):188 - 193
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    We are interested in discrete event dynamic systems and especially the manufacturing systems and their production management. To reduce the complexity of the problem, we consider only steady, repetitive and deterministic command. We have previously (1996) developed a structured and progressive method to elaborate the cyclic behavior of the production while optimizing quantitative and qualitative p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multi-product resource planning

    Publication Year: 1997, Page(s):115 - 121
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    This paper presents a line balancing method concerning the assembly of a family of products. The product variants are assembled following different assembly sequences (some operations are different or missing). The problem is to assign each operation to a workstation in order to meet production requirements at the minimum total system cost. Operations are assigned to workstations in such a way tha... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Active motion planning and collision avoidance for redundant manipulators

    Publication Year: 1997, Page(s):13 - 18
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    High-speed assembly makes strict demands on path and trajectory planning systems. In such systems the stages of path planning, trajectory planning, and `low-level' control are normally separated, which admits functional simplicity but may not produce the most useful trajectories. Thus we have been exploring the possibility of merging the levels, by allowing the path planner to generate the traject... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • SimBa: an approach for manual production lines balancing

    Publication Year: 1997, Page(s):42 - 47
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The balancing and the comparison between different solutions through the simulation of operation of man based production lines is an important tool to help to decide properly in the level of production planning. This tool becomes much more important in the planning of lines based on variable performance work stations, due to needs of learning, fast changes of operations, which cause frequent bottl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simulation of rigid body motion with impulsive friction force

    Publication Year: 1997, Page(s):182 - 187
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    An algorithm for simulating simultaneous collision impulse with friction working between rigid bodies is described. Based on this algorithm a simulator for the motion of rigid bodies with collision impulse, friction impulse, contact force, and friction force is developed. The results of some simulations of parts feeding mechanisms are shown View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Assignment stochastic algorithm in multi-product assembly lines

    Publication Year: 1997, Page(s):109 - 114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The reconfigurability potential of an assembly line depends on tasks-to-workstations assignments which are available on the occurrence of an unpredictable event. To define the assignment problem, one has to consider a good representation of assembly plans that can be obtained in a systematic way. This is a very difficult task in the case of multi-product assembly lines. In this context, the author... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A real-time dual-arm collision avoidance algorithm for assembly

    Publication Year: 1997, Page(s):7 - 12
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Multi-robot workcells provide efficiency of space, time, and materials in assembly. However this advantage cannot be fully utilized unless an efficient offline/online collision-free trajectory planner is in charge of controlling the arms. In this paper a new algorithm which provides the online and real-time generation of dual-arm collision-free trajectories has been established. The algorithm is c... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Concept design for assembly-a design theory perspective

    Publication Year: 1997, Page(s):158 - 163
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    This paper addresses the applicability of current design-for-assembly (DFA) approaches within the early stages of the design process based on a design theory approach. The paper initially outlines the existing problems in relating DFA approaches to product development. The proposed solution is the classification of DFA within the product development process (PDP) based on a four level design model... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Development of a 3-fingered hand and grasping unknown objects by groping

    Publication Year: 1997, Page(s):72 - 77
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    This paper addresses the development of a 3-fingered hand and discusses a strategy for grasping unknown objects by groping. First, the design of the developed robot hand is presented. The robot hand has thumb, index finger and middle finger with a total of eight degrees-of-freedom. The location of thumb is designed considering opposability of human hand. Eighty-seven touch sensors are distributed ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrated part and assembly planning

    Publication Year: 1997, Page(s):36 - 41
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    A research project at the CSIRO Australia is addressing the issue of integrating part and assembly planning with a view to developing a software which will help to reduce the process planning times in the manufacture of products, and develop corporate memory of know-how. The research effort is focused on part attributes for manufacture and assembly, the generic tasks involved, their precedent, the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The concept of “difficulty” in mating operations

    Publication Year: 1997, Page(s):176 - 181
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    In order to optimize the assembly operations, an optimization index is necessary. In this line, the paper presents a new definition of difficulty for mating operations. This definition considers the geometry of the objects and the strategy used to mate the parts, so that both aspects can be evaluated for the ease of the task. Uncertainties can be considered in a natural way, just taking into accou... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Assemblability analysis with adjusting cost evaluation based on tolerance and adjustability

    Publication Year: 1997, Page(s):103 - 108
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Tolerances affect the assemblability of a product, which in turn affects the cost of the product because of the scrap cost, and wasted time and energy. In this paper, we propose a method to analyze the product in terms of assemblability based on tolerances and adjustability of the parts. More specifically, the product is considered assembled if the real parts can be fit regardless of the deviation... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Online computing of a robotic manipulator joint trajectory with velocity and acceleration constraints

    Publication Year: 1997, Page(s):1 - 6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    An online algorithm for computing a robot manipulator's trajectory in joint space with velocity and acceleration constraints is proposed. Our theoretical discussion is based on optimizing the minimum possible time for velocity and acceleration constraints while using cubic splines. A method for calculating the wandering time is also presented. This value of the time gives prehand knowledge to the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A design-specific approach to design-for-assembly (DFA) for complex mechanical assemblies

    Publication Year: 1997, Page(s):152 - 157
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    DFA issues of complex assemblies are addressed. Complex assemblies have very high parts-counts, offer limited redesign options, and their assembly is an assembly of subassemblies. Conventional DFA is inadequate for complex assemblies as it omits the combinatorial aspects of assembly such as assembly sequence choice and partitioning of subassemblies. Here, assembly sequence analysis (ASA) is used a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Identifying and positioning parts using RISC sensors and RISC grippers together

    Publication Year: 1997, Page(s):66 - 71
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    This paper introduces our work on “reliable, immediate, simple and cheap” (RISC) robotics, focusing on removing pose uncertainty of parts, which is the principal cause of mating failure. To maximize the RISC effects, we recommend using RISC sensors and RISC grippers together in part picking. Before grasping, parts can be identified and roughly localized using optical sensors. During gr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.