Design of Civil Low-Pressure Vessel’s "4 in 1" Stamping Compound Dies

2013 ◽  
Vol 546 ◽  
pp. 16-19
Author(s):  
Hai Bing Jiang ◽  
Biao Zhou ◽  
Jun Wu

Traditional stamping process of civil low-pressure vessel deals with blanking, drawing, trimming and flaring process in different processing station separately, work-piece transmission between different processing stations increases the auxiliary time, and the work-piece needs reinstallation, reduce production efficiency and increase production cost. In order to overcome the above disadvantages, the optimized stamping technology process is designed, compress four process (blanking、drawing、trimming and flaring) into a integrity process, and the development of a "4 in 1" stamping compound dies, that makes stamping automation realize easily, improve processing efficiency, easy operation, and reduce the product processing cost and labor costs, and enhance economic performance.

1970 ◽  
Vol 92 (2) ◽  
pp. 173-181 ◽  
Author(s):  
M. K. Selc¸uk ◽  
G. T. Ward

Mathematical model and computer programs have been developed for the analysis of the economic performance of a terrestrial solar power system using heat engines. Various combinations of cycle, collector, engine, storage system, and sink have been studied and the influence of design parameters on power costs examined for both the steady and unsteady state cases. Typical minimum power costs under central Australian conditions for units of 12 kw capacity at current levels of materials and labor costs range from 7 to 47 U. S. cents per kwh, according to the specific design of installation.


2016 ◽  
Vol 851 ◽  
pp. 433-438
Author(s):  
Shu Jie Sun ◽  
Hu Lin ◽  
Liao Mo Zheng ◽  
Jin Gang Yu ◽  
Bei Bei Li ◽  
...  

To ensure the machining precision of work piece and improve the machining quality and machining efficiency, a dynamic transition method based on axial machining accuracy is given. Firstly, the maximum machining contour error is computed based on the axial machining accuracy, and the tool path is processed based on the machining contour error to reduce the amount of command points. Secondly, the circle transition method is used to make the tool path smoother and the machining efficiency higher. Finally, the radius of the transition circle is adjusted based on the maximum velocity of each transition circle. The experimental results shows that the method proposed could effectively satisfy the needs of the machining accuracy and improve the processing efficiency, while reduce the amount of path data.


Author(s):  
Samir B. Billatos ◽  
Nadia A. Basaly

Abstract In high speed machining, the generated heat produces very high temperatures at the tool-work interface. Heat generated at the cutting area may shorten tool life, damage work piece surface, affect surface characteristics, and hence increase production cost. To deal with these problems, cutting fluids are used. Unfortunately, these fluids cause harmful effects to the operators and serious problems of pollution to the environment. Therefore, a new approach is developed to reduce the cutting tool temperature without using external coolants, and thus considerably reduce the amount of the hazardous waste being disposed to the environment. It removes a portion of the generated heat from the tool-work interface by flowing water in a closed cooling cycle system. The approach was analyzed and verified using Finite Element Analysis. Results were compared to the dry and wet cutting cases obtained from literature, and it was found that temperatures on the flank and rake faces of the tool can be lowered, and the overheated area of the tool tip, and consequently its wear, can be reduced significantly.


2019 ◽  
Vol 268 ◽  
pp. 02006
Author(s):  
Steve Z. Y. Foong ◽  
Viknesh Andiappan ◽  
Raymond Tan ◽  
Denny K. S. Ng

A typical palm oil mill produces crude palm oil, crude palm kernel oil and other biomass from fresh fruit bunches. While the milling process is well established in the industry, insufficient research and development has been done on analyzing the operational performance of a mill. Factors such as operating time and fruit availability affect the performance of a palm oil mill (e.g., capital, operating and labor costs). This paper presents an input-output model to optimize the operations of a palm oil mill based on maximum economic performance. Following this, feasible operating range analysis (FORA) is performed to study the utilization and flexibility of the process. A palm oil mill case study in Malaysia is used to illustrate the proposed approach. Based on the optimized results, it was found that 37% reduction in capital cost and 49% increase in economic performance is achieved. Meanwhile, the utilization index of the mill during peak season increases from 0.48 to 0.76.


1981 ◽  
Vol 10 (2) ◽  
pp. 21-28
Author(s):  
Frank M. Goode

Recently released reports of the 1980 Census of Population has again focussed attention on the relatively poor economic performance of the Northeast region. This paper suggests that the labor costs and market conditions that have allegedly been responsible for the movement of traditional manufacturing out of the Northeast may be changing. Thus, this movement will not be a “drag” on the future economic development of the Northeast. The potential “turnaround” in the Northeast is suggested by the recent economic performance in New England and by Pittsburgh's ability to attract firms in rapidly growing manufacturing sectors.


2018 ◽  
Vol 10 (12) ◽  
pp. 4525 ◽  
Author(s):  
Qiangqiang Zhang ◽  
Beibei Yan ◽  
Xuexi Huo

Outsourcing, as a productive service, has been widely adopted in industrial production and international trade but less applied in agricultural management. With the advancement of agricultural labor division and specialization, outsourcing is becoming one of the most sustained trends in concurrent business. This study used a multiple linear regression and a propensity score matching model to quantify the different effects of participation in production outsourcing on farmers’ apple production efficiency and apple income based on field survey data from 960 apple farmers in the Shandong, Shaanxi, and Gansu Provinces. The results showed that, on average, the outsourcing of apple production increased farmers’ apple production technology efficiency by 5.60%, their labor productivity by 2121.48 kg/person, land productivity by 334.50 kg/mu, capital productivity by 0.05 kg/Yuan, and apple sales revenue by 13,300 Yuan. However, farmers’ net income from apples decreased by an average of 5000 Yuan. The outsourcing of apple production, which is labor-intensive, is constrained by the increase in labor costs, which, in turn, affect the transformation of the apple industry into a service-scale operation driven by the economy of division.


2013 ◽  
Vol 748 ◽  
pp. 370-375
Author(s):  
Da Yong Jiang ◽  
Huai Wen Zheng ◽  
Lei Cai ◽  
Bin Qiu

With the rapid development of the automobile industry, improving production efficiency has become a key factor to enhance competitiveness. However, during the CAE R&D process, it has a serious impact on the labor costs due to the operation repeatability, that is to say, this work pattern drastically reduces the company's production efficiency and economic benefits, that is why it is very essential to develop the CAE automatic system. In this paper, how to develop the CAE automatic system is discussed in detail firstly, and then through the linear static analysis for a rear suspension to verify the feasibility and value of the CAE automatic system.


2013 ◽  
Vol 706-708 ◽  
pp. 1132-1135
Author(s):  
Xiu Fen Xu

To solve the existing problems in the NC machining process, the optimization design of cutting parameters in NC milling machine with genetic algorithm. With the maximum production efficiency as the optimization objective, the spindle speed, feed speed, milling width, depth and other parameters as optimal variables, establishes the optimization mathematical model of machine tool. The optimization results show that: parameters optimization can significantly improve the processing efficiency, and bring economic benefits for enterprises


2014 ◽  
Vol 940 ◽  
pp. 213-216
Author(s):  
Xi Yan Li ◽  
Yong Bao Xin ◽  
Li Dong Si ◽  
Wen Feng Li ◽  
Pei Xun Jin

A newly developed four-station translational and rotary worktable can be applied for complex human-machine hybrid operations and dangerous heat treatment operations. And the design can guarantee closed operations without involvement of human when the worktable rotates to the concentrated area, while the installation or other manual processing when the worktable rotates to the separate area. In addition, by designing innovative rotating and track-changing mechanism and the direction-holding mechanism, the work piece remains the constant direction in the rotation process. Furthermore, the interference problem of the Geneva mechanism of the track-changing fork is analyzed. Consequently, the smaller the angle of fork notch is, the smaller the force that fork reacts on the support shaft is, meanwhile, the strength can be satisfied more easily. The optimal angle of Y-fork is 90 degree. The application of the four-station translational and rotary worktable can achieve multi-step continuous process, save workspace and improve production efficiency.


2015 ◽  
Vol 733 ◽  
pp. 526-530
Author(s):  
Shi Min Wang ◽  
Dong Quan Zhao ◽  
Rong Qi Deng

Milling is a rule in milling machine using the rotation of the milling cutter movement, the movement of the work piece forward movement to machining of cutting method. In processing, the direction of rotation of the milling cutter is generally the same, but the cutting direction of tool is changing. In milling of common two phenomena: down milling and inverse milling. In order to improve the surface quality of machining and reduce tool wear, and thus improve the production efficiency and economic benefit, this paper expounded from different angles and compared the advantages and disadvantages of two types of milling, In order to the future production mechanical processing industry provides the theoretical basis and technical support.


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