Mathematical models for the productivity rate of automated lines with different failure rates for stations and mechanisms

2015 ◽  
Vol 82 (1-4) ◽  
pp. 681-695 ◽  
Author(s):  
R. Usubamatov ◽  
T. C. Sin ◽  
R. Ahmad
Author(s):  
Ryspek Usubamatov ◽  
Tan Chan Sin ◽  
Mohd Fidzwan B. Md. Amin Hamzas

The basic attributes of any industrial machines and systems are productivity rate and quality of products. Attributes of productivity are related to the theory of reliability let alone the theory of efficiency of machines. Publications in area of productivity of the industrial systems enable to write the productivity theory for the industrial machines and systems. This theory shows the links between productivity, reliability, technological and technical parameters and the structure of machines with complex designs. Automated production lines are considered industrial systems for the collection of serial and parallel stations arranged according to a certain structure that depends on a technological process of machining parts. Manufacturers require correct and clear mathematical models to calculate the productivity of the automated lines with high accuracy. The mathematical models for productivity rate of industrial systems with complex design define their structures according to the level of output. This paper presents an analytical approach to the productivity rate of automated lines with stations and mechanisms that display different failure rates and processing times. The typical designs of industrial automated lines are considered by three types of structure: multi-station ’s automated line of serial, parallel action and serial-parallel action. All designs can be presented using linear, circular and rotary arrangements. The analytical equations allow for the output of the automated lines to be modeled with different failure rates for the stations and mechanisms yielding results close to the actual productivity values.


2014 ◽  
Vol 695 ◽  
pp. 521-525
Author(s):  
Ryspek Usubamatov ◽  
Tan Chan Sin

Automated lines with complex structures consist of stations and mechanisms with different levels of reliability. Most publications that present the mathematical models for productivity of automated lines are based on simplifications to derive the approximate equations of productivity. Simplification is based on the premise that all stations of the automated lines have one level of reliability, and balancing of technological process on stations is conducted evenly, etc. However, manufacturers need correct and clear mathematical models to enable the calculation of the productivity of the automated lines with high accuracy. This paper presents the analytical approach to the productivity rate of the automated lines with stations and mechanisms, with different failure rates, and processing times. The proposed mathematical models allow for the output of automated lines to be modelled with results that are close to actual productivity.


Author(s):  
A. M. Ahmed Alwaise ◽  
Omer Haitham Kanam

In area of manufacturing, the indices of each manufacturing machine are the productivity and goodness of products. The theory of reliability is closely related to Indices of productivity, the both theories the efficiency of machines, and optimizations one. The reliability of machines has been guessed by standard indices of the theory of reliability. The main index of reliability of every manufacturing machine is its availability. However, indicated the reliability of industrial machines with complicate design have not expressed in equations of the productivity. These indices of accuracy should be a component of equations of a productivity of a machine and reflects changes of a productivity rate one on changes of indices of reliability and mechanical parameters of a machine. The availability has been included the equations of the machines productivity rate, therefore the reliability of machines is the integrated indication. The machines reliability with complicate design such as automated lines relies also on construction and technical data. The output modelling has been reported the output result with availability for the automated lines, defining their structures according to the grade of reliability and productivity as a task of technical motif of manufacturing machines with complex designs.


Author(s):  
R Usubamatov ◽  
M Z Abdulmuin ◽  
A M Nor ◽  
M N Murad

Rotor-type production lines are used in many areas of industry. Existing analytical approaches that utilize productivity rate data of the rotor-type lines do not reflect reliable technical parameters. This paper presents a new analytical approach for calculating the productivity rate of a rotor-type automatic machine and automated lines with parallel—sequential action and optimization of its structure as a number of serial and parallel stations using the criterion of maximal productivity rate.


2012 ◽  
Vol 66 (1-4) ◽  
pp. 59-69 ◽  
Author(s):  
R. Usubamatov ◽  
K. A. Ismail ◽  
J. M. Sah

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