The Italian Heavy Mechanical Engineering Industry

1969 ◽  
Vol 184 (1) ◽  
pp. 1146-1155
Author(s):  
Pier Giovanni Gamucci
Keyword(s):  
Machine Tools ◽  
Technological Progress ◽  
Mechanical Engineering ◽  
Thermal Power ◽  
Industrial Applications ◽  
Engineering Industry ◽  
Significant Progress ◽  
History Of ◽  
Generating Equipment ◽  
Power Generating Equipment

This paper is divided into two parts. The first deals with the Italian heavy mechanical engineering industry in general. It contains a brief history of the industry from the nineteenth century to the present day and then considers three important factors at present affecting the industry: technological progress; the growth of labour-training facilities as the number of men employed increases; the increase in size of companies. The second part deals in some detail with the following sectors of the industry: power-generating machines; thermal power-generating equipment for industrial applications; machine tools; pumps and compressors; lifting and handling equipment. In all these sectors significant progress has been made.

scholarly journals Linear Displacement Calibration System Integrated with a Novel Auto-Alignment Module for Optical Axes

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2462 ◽  
Author(s):  
Yi-Chieh Shih ◽  
Pi-Cheng Tung ◽  
Yung-Cheng Wang ◽  
Lih-Horng Shyu ◽  
Eberhard Manske
Keyword(s):  
Machine Tools ◽  
Mechanical Engineering ◽  
Critical Issue ◽  
Linear Displacement ◽  
Engineering Industry ◽  
Operational Experience ◽  
Common Path ◽  
Fabry Perot ◽  
Optical Axes

The quality of processed workpieces is affected directly by the precision of the linear stage. Therefore, the linear displacement calibration of machine tools must be implemented before delivery and after employment for a period of time. How to perform a precise calibration with high inspection efficiency is a critical issue in the precision mechanical engineering industry. In this study, the self-developed system integrated by the measurement module based on the common path Fabry–Pérot interferometer for linear displacement and the auto-alignment module for optical axes was proposed to realize the automatic linear displacement calibration of the linear stages. The measurement performance of the developed structure was verified experimentally. With the auto-alignment module, the cosine error was reduced to 0.36 nm and the entire procedure accomplished within 75 s without the limitation of the perceived resolution of the human eye, operational experience, and the risk of misalignment and broken cable. According to the comparison of experimental results for the linear displacement, the repeatability of the proposed measurement module was less than 0.171 μm. After the compensation procedure according to the linear displacement calibration, the systematic positional deviation, repeatability, and accuracy of the linear axis could be improved to 4 μm, 1 μm, and 5 μm respectively. Hence, the calibration efficiency can be improved by 80% with the proposed compact system, which is beneficial for the linear displacement calibration of machine tools in the precision mechanical engineering industry.

Simulation of a pilot solar chimney thermal power generating equipment

2007 ◽  
Vol 32 (10) ◽  
pp. 1637-1644 ◽  
Author(s):  
Xinping Zhou ◽  
Jiakuan Yang ◽  
Bo Xiao ◽  
Guoxiang Hou
Keyword(s):  
Thermal Power ◽  
Solar Chimney ◽  
Generating Equipment ◽  
Power Generating Equipment

Revival of 1920s Belt-Driven Machine Tools with Virtual Reality

2012 ◽  
Vol 163 ◽  
pp. 155-161
Author(s):  
Y.S. Chang ◽  
J.J. Fang
Keyword(s):  
Virtual Reality ◽  
Machine Tool ◽  
Virtual Environment ◽  
Machine Tools ◽  
Mechanical Engineering ◽  
Milling Machine ◽  
History Of

Taking one of the belt-driven machine tools, horizontal milling machine, as the protagonist, the study constructs a virtual environment based on OpenGL and Microsoft Foundation Class without using any well-developed commercial VR software. Belt-driven mechanism was developed in the 1920s, at which time the motor was first invented and rather expensive. Because of difficult preservation and underlying hazards in mechanical antiques, resurgence of the horizontal milling machine in virtual reality is proposed and an exhibition room is permanently settled to memorize the history of mechanical engineering in the 1920s. Aside from the application of exhibition, this developed system also allows users to operate the machine tool in the same manner as in reality.

Mechanical Engineering in the Midlands, 1925–1950

1950 ◽  
Vol 162 (1) ◽  
pp. 279-290
Author(s):  
F. Vincent Everard
Keyword(s):  
Special Reference ◽  
Gas Turbines ◽  
Machine Tools ◽  
Mechanical Engineering ◽  
Road Transport ◽  
Engineering Industry ◽  
Steam Turbines ◽  
Public And Private ◽  
Steam Boilers ◽  
Made In

Developments of popular interest that have taken place in the mechanical engineering industry in Birmingham and the surrounding districts by the year 1950, which is not only twenty-three years since the Institution last met there but also is the turn of the half century, are briefly surveyed. Power plant, incorporating steam boilers, steam turbines, oil engines, and gas turbines, is discussed, with special reference to the development of the oil engine and its adaptation for special usage in the 1939–45 war. Changes in public and private road transport engines are traced up to the first turbine-engined private motor car. Improvements in the design of machine tools from practical and aesthetic aspects are touched upon. Mass production and its effect on the craftsman, and advances that have been made in factory management, amenities, and the prevention and treatment of accidents are mentioned, as also is the rehabilitation of workmen, with special reference to the work carried on by the Birmingham Accident Hospital. In processes, the hydroblast method of cleaning castings and the automatic rustproofing of car bodies are described.

The Chatterbox: A Device for Hearing Chatter as Sections are Cut

1973 ◽  
Vol 31 ◽  
pp. 360-361
Author(s):  
C. W. McCutchen ◽  
Lois W. Tice
Keyword(s):  
Machine Tools ◽  
Cutting Tool ◽  
Guerilla Warfare ◽  
History Of ◽  
Chatter Marks

Ultramicrotomists live in a state of guerilla warfare with chatter. This situation is likely to be permanent. We can infer this from the history of machine tools. If set the wrong way for the particular combination of cutting tool and material, most if not all machine tools will chatter.In more than 100 years since machine tools became common, no one has evolved a practical recipe that guarantees avoiding chatter. Rather than follow some single very conservative rule to avoid chatter in all cases, machinists detect it when it happens, and change conditions until it stops. This is possible because they have no trouble telling when their cutting tool is chattering. They can see chatter marks, and they can also hear a sometimes deafening noise.

Thermophoretic Cleaning of Air in Power-Generating Equipment

2005 ◽  
Vol 36 (3) ◽  
pp. 181-190
Author(s):  
B. I. Basok ◽  
S. S. Ryzhkov, Jr.
Keyword(s):  
Generating Equipment ◽  
Power Generating Equipment

scholarly journals Jojoba Oil: An Updated Comprehensive Review on Chemistry, Pharmaceutical Uses, and Toxicity

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1711
Author(s):  
Heba A. Gad ◽  
Autumn Roberts ◽  
Samirah H. Hamzi ◽  
Haidy A. Gad ◽  
Ilham Touiss ◽  
...  
Keyword(s):  
Industrial Applications ◽  
Literature Survey ◽  
Jojoba Oil ◽  
Pharmacological Activities ◽  
Wide Range ◽  
Liver Functions ◽  
History Of ◽  
History Of Use ◽  
Pharmaceutical Uses ◽  
Obesity And Cancer

Jojoba is a widely used medicinal plant that is cultivated worldwide. Its seeds and oil have a long history of use in folklore to treat various ailments, such as skin and scalp disorders, superficial wounds, sore throat, obesity, and cancer; for improvement of liver functions, enhancement of immunity, and promotion of hair growth. Extensive studies on Jojoba oil showed a wide range of pharmacological applications, including antioxidant, anti-acne and antipsoriasis, anti-inflammatory, antifungal, antipyretic, analgesic, antimicrobial, and anti-hyperglycemia activities. In addition, Jojoba oil is widely used in the pharmaceutical industry, especially in cosmetics for topical, transdermal, and parenteral preparations. Jojoba oil also holds value in the industry as an anti-rodent, insecticides, lubricant, surfactant, and a source for the production of bioenergy. Jojoba oil is considered among the top-ranked oils due to its wax, which constitutes about 98% (mainly wax esters, few free fatty acids, alcohols, and hydrocarbons). In addition, sterols and vitamins with few triglyceride esters, flavonoids, phenolic and cyanogenic compounds are also present. The present review represents an updated literature survey about the chemical composition of jojoba oil, its physical properties, pharmacological activities, pharmaceutical and industrial applications, and toxicity.

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