Analyses of peg‐hole jamming in automatic assembly machines

2011 ◽  
Vol 31 (4) ◽  
pp. 358-362 ◽  
Author(s):  
Ryspek Usubamatov ◽  
K.W. Leong
Keyword(s):  
Mathematical Model ◽  
Boundary Condition ◽  
Design Methodology ◽  
Manufacturing Industry ◽  
Critical Depth ◽  
Assembly Process ◽  
Automatic Assembly ◽  
Content Type ◽  
The Mathematical Model ◽  
Practical Implications

PurposeThe purpose of this paper is to investigate theoretically the process of jamming in the peg‐hole type parts and to derive a mathematical model of jamming.Design/methodology/approachThe mathematical model of the jamming of the peg‐hole type parts in assembly process was performed and its boundary conditions, which lead to jamming, defined.FindingsThe equation of the critical angles of declination for the peg, which leads to the peg‐hole jam, was derived. The boundary condition of the angles of declination and the depth of the peg insertion into the hole were defined.Research limitations/implicationsA mathematical model is developed for rigid parts with a hole and for the peg clamped in the rigid assembly mechanisms. The research has not considered flexible deformations and stiffness of the assembly mechanisms, which result in the peg's declination in the assembly process.Practical implicationsThe results are represented in the form of the peg's critical angles of declination and critical depth of insertion into the hole, which leads to jamming of the peg‐hole type parts to be assembled. On the basis of the obtained results, it is possible to formulate the tolerances of the declination angles for the assembly mechanisms, which clamp the peg‐type parts.Originality/valueThe proposed method calculating the critical angles of the peg's declination and critical depth of the peg's insertion into the hole for assembly of the peg‐hole type parts, enables one to increase the reliability of the assembly process in the manufacturing industry.

Novel symmetrical step-down topologies of zigzag autotransformer

Circuit World ◽  
2019 ◽  
Vol 45 (4) ◽  
pp. 231-256
Author(s):  
JiaRong Wang ◽  
XiaoQiang Chen
Keyword(s):  
Mathematical Model ◽  
Main Parameter ◽  
Design Methodology ◽  
Content Type ◽  
Modeling Analysis ◽  
Step Down ◽  
The Mathematical Model ◽  
Practical Implications ◽  
Theoretical Results ◽  
Equivalent Capacity

Purpose This paper aims to obtain a symmetrical step-down topology with lower equivalent capacity and wider step-down range under the condition of the same output. Three new symmetrical step-down topologies of zigzag autotransformer are proposed in this paper. Taking the equivalent capacity as the main parameter, the obtained topologies are modeled and analyzed in detail. Design/methodology/approach This paper adopts the research methods of design, modeling, analysis and simulation verification. First, the zigzag autotransformer is redesigned according to the design objective of symmetrical step-down topology. Second, the mathematical model of the designed topology is established, and the detailed theoretical analysis is carried out. Finally, the theoretical results are verified by simulation. Findings Three symmetrical zigzag autotransformer step-down topologies are designed, the winding configurations of the corresponding topology are presented, the step-down ranges of these three topologies are calculated and the influence of step-down ratio on equivalent capacity of autotransformer is analyzed. Through analysis, the target step-down topologies are obtained when the step-down ratio is [0.969, 1.414] and [1.414, 8]. Research limitations/implications Because the selected research object is only zigzag autotransformer, the research results may lack generality. Therefore, researchers are encouraged to further study topologies of other autotransformers. Practical implications This paper includes the implications of step-down ratio on the equivalent capacity of autotransformer and the configuration of transformer windings. Originality/value The topologies designed in this paper enable zigzag autotransformer to be applied in step-down circumstances.

The effect of the valence of sponsorship information on consumers’ attitudes toward the sponsor brand

2019 ◽  
Vol 20 (4) ◽  
pp. 603-616 ◽  
Author(s):  
Christopher Dick
Keyword(s):  
Boundary Condition ◽  
Experimental Research ◽  
Design Methodology ◽  
Strong Influence ◽  
Content Type ◽  
Different Types ◽  
Negative Condition ◽  
Practical Implications ◽  
Practical Recommendations ◽  
Better Than

Purpose To date, research on sponsorship considers the effects of only positive or only negative sponsorship information on consumers’ attitudes toward the sponsor brand. However, in practice, sometimes mixed information (positive and negative) is available that influences consumers’ sponsor evaluations. To mirror the information situation of the real world, the purpose of this paper is to investigate how the valence of sponsorship information (only positive vs mixed vs only negative) and the strength of sponsorship information (weak vs strong) influence the consumers’ attitudes toward the sponsor brand. Design/methodology/approach This research uses an experimental research design (n=210). Data were collected among students of a German university. Findings The results reveal that when the strength of information was weak, attitudes in the mixed information condition were not significantly worse than in the only positive condition and significantly better than in the only negative condition. In addition, when the strength of information was strong, attitudes in the mixed information condition were significantly worse than in the only positive condition and significantly better than in the only negative condition. Practical implications This study offers several practical recommendations regarding the sponsors’ evaluation of their investments and the decision to maintain or exit the sponsorship of a controversial object. Originality/value This study expands the research on the effects of available sponsorship information on consumers’ sponsor evaluation. The present research highlights the effects of different types of sponsorship information on consumers’ attitudes and considers the strength of information as a boundary condition of these effects.

Technology jump in the industry: human–robot cooperation in production

2020 ◽  
Vol 47 (5) ◽  
pp. 757-775
Author(s):  
Zoltan Dobra ◽  
Krishna S. Dhir
Keyword(s):  
Design Methodology ◽  
Manufacturing Industry ◽  
Current Status ◽  
Robot System ◽  
Content Type ◽  
New Directions ◽  
Academic Publications ◽  
Robot Cooperation ◽  
Human Robot Collaboration ◽  
Practical Implications

Purpose Recent years have seen a technological change, Industry 4.0, in the manufacturing industry. Human–robot cooperation, a new application, is increasing and facilitating collaboration without fences, cages or any kind of separation. The purpose of the paper is to review mainstream academic publications to evaluate the current status of human–robot cooperation and identify potential areas of further research. Design/methodology/approach A systematic literature review is offered that searches, appraises, synthetizes and analyses relevant works. Findings The authors report the prevailing status of human–robot collaboration, human factors, complexity/ programming, safety, collision avoidance, instructing the robot system and other aspects of human–robot collaboration. Practical implications This paper identifies new directions and potential research in practice of human–robot collaboration, such as measuring the degree of collaboration, integrating human–robot cooperation into teamwork theories, effective functional relocation of the robot and product design for human robot collaboration. Originality/value This paper will be useful for three cohorts of readers, namely, the manufacturers who require a baseline for development and deployment of robots; users of robots-seeking manufacturing advantage and researchers looking for new directions for further exploration of human–machine collaboration.

Wind-driven land-yacht robot mathematical modeling and verification

2016 ◽  
Vol 43 (1) ◽  
pp. 77-90 ◽  
Author(s):  
Jiqing Chen ◽  
Shaorong Xie ◽  
Jun Luo ◽  
Hengyu Li
Keyword(s):  
Mathematical Model ◽  
Experimental Tests ◽  
Outer Planet ◽  
Mechanism Analysis ◽  
Content Type ◽  
The Antarctic ◽  
The Mathematical Model ◽  
The Given ◽  
Practical Implications ◽  
Wind Resources

Purpose – The purpose of this paper was to solve the shortage of carrying energy in probing robot and make full use of wind resources in the Antarctic expedition by designing a four-wheel land-yacht. Land-yacht is a new kind of mobile robot powered by the wind using a sail. The mathematical model and trajectory of the land-yacht are presented in this paper. Design/methodology/approach – The mechanism analysis method and experimental modeling method are used to establish a dual-input and dual-output mathematical model for the motion of land-yacht. First, the land-yacht’s model structure is obtained by using mechanism analysis. Then, the models of steering gear, servomotors and force of wing sail are analyzed and validated. Finally, the motion of land-yacht is simulated according to the mathematical model. Findings – The mathematical model is used to analyze linear motion and steering motion. Compared with the simulation results and the actual experimental tests, the feasibility and reliability of the proposed land-yacht modeling are verified. It can travel according to the given signal. Practical implications – This land-yacht can be used in the Antarctic, outer planet or for harsh environment exploration. Originality/value – A land-yacht is designed, and the contribution of this research is the development of a mathematical model for land-yacht robot. It provides a theoretical basis for analysis of the land-yacht’s motion.

Novel step-down topologies of star-connected autotransformer

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
JiaRong Wang ◽  
Bo He ◽  
XiaoQiang Chen
Keyword(s):  
Design Methodology ◽  
Voltage Regulation ◽  
Content Type ◽  
Harmonic Reduction ◽  
Modeling Analysis ◽  
Step Down ◽  
The Mathematical Model ◽  
Practical Implications ◽  
Theoretical Results ◽  
Equivalent Capacity

Purpose This paper aims to obtain a symmetrical step-down topology with lower equivalent capacity and wider step-down range under the condition of the same output. Two new symmetrical step-down topologies of star-connected autotransformers are proposed in this paper. Taking the equivalent capacity as the main parameter, the obtained topologies are modeled and analyzed in detail. Design/methodology/approach This paper adopts the research methods of design, modeling, analysis and simulation verification. First, the star-connected autotransformer is redesigned according to the design objective of symmetrical step-down topology. In addition, the mathematical model of two topologies is established and a detailed theoretical analysis is carried out. Finally, the theoretical results are verified by simulation. Findings Two symmetrical star-connected autotransformer step-down topologies are designed, the winding configurations of the corresponding topology are presented, the step-down ranges of these three topologies are calculated and the influence of step-down ratio on the equivalent capacity of autotransformer are analyzed. Through analysis, the target step-down topologies are obtained when the step-down ratio is [1.1, 5.4] and [1.1, 1.9] respectively. Research limitations/implications Because the selected research object is only a star-connected autotransformer, the research results may lack generality. Therefore, researchers are encouraged to further study the topologies of other autotransformers. Practical implications This paper includes the implications of the step-down ratio on the equivalent capacity of autotransformers and the configuration of transformer windings. Originality/value The topologies designed in this paper enable star-connected autotransformer in the 12-pulse rectifier to be applied in step-down circumstances rather than situations of harmonic reduction only. At the same time, this paper provides a way that can be used to redesign the autotransformer in other multi-pulse rectifier systems, so that those transformers can be used in voltage regulation.

The use of 5-WHYs technique to eliminate OEE’s speed loss in a manufacturing firm

2015 ◽  
Vol 21 (4) ◽  
pp. 419-435 ◽  
Author(s):  
Samuel Jebaraj Benjamin ◽  
M. Srikamaladevi Marathamuthu ◽  
Uthiyakumar Murugaiah
Keyword(s):  
Lean Manufacturing ◽  
Design Methodology ◽  
Manufacturing Industry ◽  
Research Study ◽  
Value Added ◽  
Quality Loss ◽  
Manufacturing Firm ◽  
Content Type ◽  
Analysis Technique ◽  
Practical Implications

Purpose – The purpose of this paper is to reduce or eliminate the overall equipment effectiveness (OEE’s) speed loss in a lean manufacturing environment. Design/methodology/approach – This action research study uses the lean manufacturing 5-whys analysis technique to reduce or eliminate the speed loss. Findings – The application of the 5-whys analysis technique in a manufacturing industry (XYZ Corporation) completely eliminated its top speed loss and resulted in a valuable savings of USD 32,811.5 per annum. Practical implications – The 5-whys analysis technique which has been primarily known to improve the OEE’s quality loss and changeover loss has been proven to be an effective approach to also tackle speed loss; a loss which has been regarded as the most dominating loss among all the types of OEE’s losses and a difficult one to eliminate. Originality/value – Little or no attempt has been made to date to expand the use of the 5-whys analysis technique beyond its originally intended purpose. The lessons learnt in this study could be applied to other organizations. The outcome of the study has also opened the possibility of widening the horizon of the use of the 5-whys analysis technique beyond its original intended objective and could be applicable to solve other losses of OEE and non-value added activities of lean philosophy in general.

Getting involved in innovation: how High-Involvement HRM practices support employee’s to be innovative

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Keyword(s):  
Design Methodology ◽  
Manufacturing Industry ◽  
Positive Impact ◽  
Workplace Behavior ◽  
High Involvement ◽  
Content Type ◽  
Functional Flexibility ◽  
Hrm Practices ◽  
Pertinent Information ◽  
Practical Implications

Purpose This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings Based on research from the manufacturing industry in Pakistan, the authors find that high-involvement HR practices have a direct positive impact on individual employee functional flexibility and innovative workplace behavior Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Croatia seeks new spirit of enterprise

2014 ◽  
Vol 30 (5) ◽  
pp. 28-30
Keyword(s):  
Product Innovation ◽  
Design Methodology ◽  
Manufacturing Industry ◽  
Reading Time ◽  
Radical Product ◽  
Content Type ◽  
Current State ◽  
Pertinent Information ◽  
State Of Affairs ◽  
Practical Implications

Purpose – This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach – This briefing is prepared by an independent writer who adds his own impartial comments and places the articles in context. Findings – Croatian manufacturing industry is strong on ideas but less impressive when it comes to actually generating radical product innovation. The authors make recommendations for improving the current state of affairs. Practical implications – The paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value – The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

scholarly journals Multichannel integration through innovation capability in manufacturing SMEs and its impact on performance

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Diana Kolbe ◽  
Haydeé Calderón ◽  
Marta Frasquet
Keyword(s):  
Design Methodology ◽  
Manufacturing Industry ◽  
Manufacturing Firms ◽  
Advanced Manufacturing ◽  
Multiple Channels ◽  
Innovation Capability ◽  
Content Type ◽  
Offline Channels ◽  
Effective Integration ◽  
Practical Implications

Purpose Using online channels is an opportunity for small and medium-sized enterprises (SMEs) in the manufacturing industry to reach new markets and reduce the dependency on distributors. The challenge remains that of integrating new online channels into existing networks effectively. This paper aims to identify to what extent multichannel integration is enhanced by the innovation capability of manufacturing SMEs and the subsequent influence on their performance. Design/methodology/approach Data were collected by means of a survey aimed at managers of small manufacturing firms in Mexico and were analysed through an advanced partial least squares (PLS) approach via SmartPLS. Findings Manufacturing SMEs with more advanced innovation capability achieve higher levels of multichannel integration. In turn, when multichannel integration is more advanced, manufacturing SMEs enjoy better results with respect to sales, fulfilling marketing objectives and improving relationships with customers. Research limitations/implications The model could be extended to accommodate other variables that may affect the effective integration of multiple channels. Practical implications Manufacturing SMEs can improve their results by integrating online channels with existing offline channels with a commitment to innovating in the market. Originality/value Analysing multichannel integration from the perspective of manufacturing firms, examining not only the positive consequences but also the underlying capabilities needed.

Ergonomic layout optimization of a smart assembly workbench

2018 ◽  
Vol 38 (3) ◽  
pp. 314-322 ◽  
Author(s):  
Shi-qing Wu ◽  
Bin Shen ◽  
Yun-zhe Tang ◽  
Jia-hai Wang ◽  
Da-teng Zheng
Keyword(s):  
Mathematical Model ◽  
Design Methodology ◽  
Optimal Solution ◽  
Layout Design ◽  
Layout Optimization ◽  
Content Type ◽  
Smart Assembly ◽  
Simulation Results ◽  
The Mathematical Model ◽  
Improved Algorithm

Purpose The purpose of this paper is to study a method to optimize the arrangement of the devices on a smart assembly workbench, which help to reduce fatigue and improve efficiency for the worker. Design/methodology/approach The optimization priority is studied based on the users’ decisions, a mathematical model of the layout optimization is established from ergonomic perspective and an improved algorithm is adopted to solve the built the mathematical model. Findings Ergonomic software Jack is chosen to simulate the four layout schemes obtained. Through comparative analysis of the simulation results, it is proven that the optimal solution can be obtained using the improved algorithm. Originality/value The mathematical model built on observation comfort, operation comfort and device accessibility, as well as the improved algorithm in this paper, has some reference values for the layout design of smart assembly workbench.

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