Search results

1 – 10 of over 8000
To view the access options for this content please click here
Article
Publication date: 1 March 1974

Y. Hasegawa

The robot has passed through a development period, and is now entering an era in which robots are being utilised by industry in production. In Japan, about 1500 robots are…

Abstract

The robot has passed through a development period, and is now entering an era in which robots are being utilised by industry in production. In Japan, about 1500 robots are used on production lines and more than 50 robot makers are supplying their products to the market. Many users have completed trials with industrial robots, and have reached the situation in which repeat orders are being sent to robot manufacturers as a potential way of improving productivity. Many of the robot makers have completed the initial development of their products, and in future will be promoting their sales to reap the benefits of these developments.

Details

Industrial Robot: An International Journal, vol. 1 no. 3
Type: Research Article
ISSN: 0143-991X

To view the access options for this content please click here
Article
Publication date: 1 April 1981

Kanji Yonemoto

Japan is the world's leading user of industrial robots and its industrial robot association is a most active robot trade association. They publish regular statistics, this…

Abstract

Japan is the world's leading user of industrial robots and its industrial robot association is a most active robot trade association. They publish regular statistics, this article by JIRA's executive director presents the figures and outlines the impact of robots up to the end of 1980.

Details

Industrial Robot: An International Journal, vol. 8 no. 4
Type: Research Article
ISSN: 0143-991X

To view the access options for this content please click here
Article
Publication date: 1 April 1977

K. Yonemoto and K. Shiino

Japanese production of industrial robots amounted to US$34 million in 1973 (hereafter, calculate 1 US$ = Yens 270,‐). For the last couple of years, the demand stayed weak…

Abstract

Japanese production of industrial robots amounted to US$34 million in 1973 (hereafter, calculate 1 US$ = Yens 270,‐). For the last couple of years, the demand stayed weak because of the slow down of industrial investment. However, the advancement of robot technology, the improvement cost‐performance of robots, and the active investment on the improvement of productivity and labour welfare in industries caused to increase the production of industrial robots up to $48 million in 1976 and will assure the future expansion of the robot market. (See Fig.1, Fig.2).

Details

Industrial Robot: An International Journal, vol. 4 no. 4
Type: Research Article
ISSN: 0143-991X

To view the access options for this content please click here
Article
Publication date: 17 January 2020

Yang Chuangui, Mi Liang, Liu Xingbao, Xia Yangqiu, Qiang Teng and Lin Han

This paper aims to propose a reasonable method to evaluate uncertainty of measurement of industrial robots’ orientation repeatability and solve the non-linear problem…

Abstract

Purpose

This paper aims to propose a reasonable method to evaluate uncertainty of measurement of industrial robots’ orientation repeatability and solve the non-linear problem existing in its evaluation procedure.

Design/methodology/approach

Firstly, a measurement model of orientation repeatability, based on laser tracker, is established. Secondly, some factors, influencing the measurement result of orientation repeatability, are identified, and their probability distribution functions are modelled. Thirdly, based on Monte Carlo method, an uncertainty evaluation model and algorithm of measurement of industrial robot’s orientation repeatability are built. Finally, an industrial robot is taken as the research object to validate the rationality of proposed method.

Findings

Results show that the measurement model of orientation repeatability of industrial robot is non-linear, and the proposed method can reasonably and objectively estimate uncertainty of measurement of industrial robots’ orientation repeatability.

Originality/value

This paper, based on Monte Carlo method and experimental work, proposes an uncertainty evaluation method of measurement of industrial robots’ orientation repeatability which can solve the non-linear problem and provide a reasonable and objective evaluation. And the stochastic ellipsoid approach is firstly taken to model the repeatability of laser tracker. Additionally, this research is beneficial to decide whether the orientation repeatability of the industrial robot meets its requirements.

Details

Industrial Robot: the international journal of robotics research and application, vol. 47 no. 2
Type: Research Article
ISSN: 0143-991X

Keywords

To view the access options for this content please click here
Article
Publication date: 15 May 2017

Chuangui Yang, Junwen Wang, Liang Mi, Xingbao Liu, Yangqiu Xia, Yilei Li, Shaoxing Ma and Qiang Teng

This paper aims to propose a four-point measurement model for directly measuring the pose (i.e. position and orientation) of industrial robot and reducing its calculating…

Abstract

Purpose

This paper aims to propose a four-point measurement model for directly measuring the pose (i.e. position and orientation) of industrial robot and reducing its calculating error and measurement uncertainty.

Design/methodology/approach

A four-point measurement model is proposed for directly measuring poses of industrial robots. First, this model consists of a position measurement model and an orientation model gotten by the position of spherically mounted reflector (SMR). Second, an influence factor analysis, simulated by Monte Carlo simulation, is performed to investigate the influence of certain factors on the accuracy and uncertainty. Third, comparisons with the common method are carried out to verify the advantage of this model. Finally, a test is carried out for evaluating the repeatability of five poses of an industrial robot.

Findings

In this paper, results show that the proposed model is better than the three-SMRs model in measurement accuracy, measurement uncertainty and computational efficiency. Moreover, both measurement accuracy and measurement uncertainty can be improved by using the proposed influence laws of its key parameters on the proposed model.

Originality/value

The proposed model can measure poses of industrial robots directly, accurately and effectively. Additionally, influence laws of key factors on the accuracy and uncertainty of the proposed model are given to provide some guidelines for improving the performance of the proposed model.

Details

Industrial Robot: An International Journal, vol. 44 no. 3
Type: Research Article
ISSN: 0143-991X

Keywords

To view the access options for this content please click here
Article
Publication date: 14 August 2018

Yang Chuangui, Liu Xingbao, Yue Xiaobin, Mi Liang, Wang Junwen, Xia Yangqiu, Yu Hailian and Chen Heng

This paper aims to solve the nonlinear problem in the uncertainty evaluation of the measurement of the positioning repeatability (RP) of industrial robots and provide…

Abstract

Purpose

This paper aims to solve the nonlinear problem in the uncertainty evaluation of the measurement of the positioning repeatability (RP) of industrial robots and provide guidance to restrict the uncertainty of measurement of RP (uRP).

Design/methodology/approach

Firstly, some uncertain sources existing in the measurement procedure of RP are identified. Secondly, the probability distribution function (PDF) of every source is established on the basis of its measurements. Some spatial combined normal distributions are adopted. Then, a method, based on Monte Carlo method (MCM) and established measurement model, is developed for the estimation of uRP. Thirdly, some tests are developed for the identification and validation of the selected PDFs of uncertain sources. Afterwards, the proposed method is applied for the evaluation and validation of the uRP. Finally, influence analyses of some key factors are proposed for the quantification of their relative contributions to uRP.

Findings

Results show that the proposed method can reasonably and objectively estimate the uRP of the selected industrial robot, and changes of the industrial robots’ position and the laser trackers measurement are correlated. Additionally, the uRP of the selected industrial robot can be restricted by using the results of its key factors on uRP.

Originality/value

This paper proposes the spatial combined normal distribution to model the uncertainty of the repeatability of the laser tracker and industrial robot. Meanwhile, the proposed method and influence analyses can be used in estimating and restricting the uRP and thus useful in determining whether the RP of a tested industrial robot meets its requirements.

Details

Industrial Robot: An International Journal, vol. 45 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

To view the access options for this content please click here
Article
Publication date: 1 January 1979

E.I. Jurevich

In the USSR industrial robots (automatic manipulators) are considered to be one of the most important means of achieving complex industrial automation. They provide a…

Abstract

In the USSR industrial robots (automatic manipulators) are considered to be one of the most important means of achieving complex industrial automation. They provide a means for human emancipation from dangerous, hard and boring labour and solution to the problem of the more efficient use of labour resources. At present the programs for development, production and application of industrial robots are being implemented in the Soviet Union on the basis of a state integrated 5‐year plan covering the key branches of industry and involving the Academy of Sciences and Higher Educational Institutions. A second similar program will be completed by 1980. It is based on the principle of central state unification of the major components of robots, a series of standard sizes and consequently the development of robot‐equipped standard technological complexes. Simultaneously, research is being carried on in the development of the next generation of robot devices. Some other aspects of the problem are also being investigated including the development of methods for evaluating the economic efficiency of robot application as well as social aspects and training of personnel.

Details

Industrial Robot: An International Journal, vol. 6 no. 1
Type: Research Article
ISSN: 0143-991X

To view the access options for this content please click here
Article
Publication date: 11 August 2020

Bin Bai, Ze Li, Qiliang Wu, Ce Zhou and Junyi Zhang

This study aims to obtained the failure probability distributions of subsystems for industrial robot and filtrate its fault data considering the complicated influencing…

Abstract

Purpose

This study aims to obtained the failure probability distributions of subsystems for industrial robot and filtrate its fault data considering the complicated influencing factors of failure rate for industrial robot and numerous epistemic uncertainties.

Design Methodology Approach

A fault data screening method and failure rate prediction framework are proposed to investigate industrial robot. First, the failure rate model of the industrial robot with different subsystems is established and then the surrogate model is used to fit bathtub curve of the original industrial robot to obtain the early fault time point. Furthermore, the distribution parameters of the original industrial robot are solved by maximum-likelihood function. Second, the influencing factors of the new industrial robot are quantified, and the epistemic uncertainties are refined using interval analytic hierarchy process method to obtain the correction coefficient of the failure rate.

Findings

The failure rate and mean time between failure (MTBF) of predicted new industrial robot are obtained, and the MTBF of predicted new industrial robot is improved compared with that of the original industrial robot.

Research Limitations Implications

Failure data of industrial robots is the basis of this prediction method, but it cannot be used for new or similar products, which is the limitation of this method. At the same time, based on the series characteristics of the industrial robot, it is not suitable for parallel or series-parallel systems.

Practical Implications

This investigation has important guiding significance to maintenance strategy and spare parts quantity of industrial robot. In addition, this study is of great help to engineers and of great significance to increase the service life and reliability of industrial robots.

Social Implications

This investigation can improve MTBF and extend the service life of industrial robots; furthermore, this method can be applied to predict other mechanical products.

Originality Value

This method can complete the process of fitting, screening and refitting the fault data of the industrial robot, which provides a theoretic basis for reliability growth of the predicted new industrial robot. This investigation has significance to maintenance strategy and spare parts quantity of the industrial robot. Moreover, this method can also be applied to the prediction of other mechanical products.

Details

Industrial Robot: the international journal of robotics research and application, vol. 47 no. 6
Type: Research Article
ISSN: 0143-991X

Keywords

To view the access options for this content please click here
Article
Publication date: 1 February 1978

S. Müller

In this report, accounts will be presented on the experience obtained from approximately 100 practical applications of industrial robots. The industrial robots used derive…

Abstract

In this report, accounts will be presented on the experience obtained from approximately 100 practical applications of industrial robots. The industrial robots used derive partly from the company's own production as well as from other domestic and foreign robot manufacturers.

Details

Industrial Robot: An International Journal, vol. 5 no. 2
Type: Research Article
ISSN: 0143-991X

To view the access options for this content please click here
Article
Publication date: 19 October 2015

Mohamed Slamani, Ahmed Joubair and Ilian A. Bonev

The purpose of this paper is to present a technique for assessing and comparing the static and dynamic performance of three different models of small six-axis industrial

Abstract

Purpose

The purpose of this paper is to present a technique for assessing and comparing the static and dynamic performance of three different models of small six-axis industrial robots using a Renishaw XL80 laser interferometer system, a FARO ION laser tracker and a Renishaw QC20-W telescoping ballbar.

Design/methodology/approach

Specific test methods are proposed in this work, and each robot has been measured in a similar area of its working envelope. The laser interferometer measurement instrument is used to assess the static positioning performance along three linear and orthogonal paths. The laser tracker is used to assess the contouring performance at different tool center point (TCP) speeds along a triangular tool path, whereas the telescoping ballbar is used to assess the dynamic positioning performance for circular paths at different TCP speeds and trajectory radii.

Findings

It is found that the tested robots behave differently, and that the static accuracy of these non-calibrated robots varies between 0.5 and 2.3 mm. On the other hand, results show that these three robots can provide acceptable corner tracking at low TCP speeds. However, a significant overshoot at the corner is observed at high TCP speed for all the robots tested. It was also found that the smallest increment of Cartesian displacement (Cartesian resolution) that can be taken by the tested robots is approximately 50 μm.

Practical implications

The technique used in this paper allows extremely accurate diagnosis of the robot performance, which makes it possible for the robot user to determine whether the robot is in good or bad condition. It can also help the decision-maker to select the most suitable industrial robot to achieve the desired task with minimum cost and specific application ability.

Originality/value

This paper proposed a new method based on the performance verification approach for solving the robot selection problem for flexible manufacturing systems. Furthermore, despite their importance, bidirectional repeatability and Cartesian resolution are never specified by the manufacturers of industrial robots nor are they described in the ISO 9283:1998 guide, and they are rarely the object of performance assessments. In this work, specific tests are performed to check and quantify the bidirectional repeatability and the Cartesian resolution of each robot.

Details

Industrial Robot: An International Journal, vol. 42 no. 6
Type: Research Article
ISSN: 0143-991X

Keywords

1 – 10 of over 8000