Machine tool operators

Production cost Process selection Machine tools Operator skill Tooling, fixtures inspection precision Assemblability Scrap and rework... 

In machine-tool operations, as in all others, the wisest course for the user is to employ reputable lubricants in the manner recommended by the machine-tool manufacturer and the oil company supplying the product. This policy simplifies the selection and application of machine tool lubricants. The user can rest assured that all the considerations outlined above have been taken into account by both authorities. 

It should be made clear to people exposed to lubricants that good standards of personal hygiene are a most effective protection against potential health hazards. However, those individuals with a history of (or thought to be particularly predisposed to) eczema or industrial dermatitis should be excluded from work where, as in machine-tool operation, contact with lubricants is virtually unavoidable. 

Synthetic coolants used in factories producing pistons can produce eruptions on the hands of machine tool operators (Angelini and Meneghini 1977). In these cases, ethylenediamine sensitivity may be a major cause (Crow et al. 1978). 

Production Cost Process Selection Machine Tools Operator Skills Tooling, Fixtures Inspection Precision Assemblability Scrap and Rework... 

Depending on the results from the comparison (YES/NO), a solution is generated either automatically by the system, or manually by the machine tool operator. 

Climate Lasers, as with other highly accurate machine tools, operate best within specified ambient temperature and atmospheric limitations. Most lasers and machines will operate trouble-free within a temperature range of 10-35°C (50-95°F). Humidity also plays a major role in laser operation. Extreme humidity will condense on water-cooled optical and electrical components and may cause operating problems with the laser unit. 

Duties Is in charge of 2 b people - machine tool operators, tool setters. 

The cutting tool is an important component of the machining system. Consequendy, tool materials significantly affect machining operation productivity. Other elements include cutting conditions, tool geometry, and the characteristics of the work material, nature of parts produced, machine tool, and support system. 

Design, maintain and operate machine tools to minimize fumes and mist generation, splashing and skin contamination... 

Over the years the performance standards of hydraulic equipment have risen. Whereas a pressure of about 1000 psi used to be adequate for industrial hydraulic systems, nowadays systems operating with pressures of 2000-3500psi are common. Pressures above 5000psi are to be found in applications such as large presses for which suitable high-pressure pumps have been developed. Additionally, systems have to provide increased power densities, more accurate response, better reliability and increased safety. Their use in numerically controlled machine tools and other advanced control systems creates the need for enhanced filtration. Full flow filters as fine as 1-10 micron retention capabilities are now to be found in many hydraulic systems. 

The use of hydraulic systems for the setting, operation and control of machine tools has increased significantly. Hydraulic mechanisms being inter-linked with electronic controls and/or feedback control systems. In machine tools, hydraulic systems have the advantage of providing stepless and vibration-less transfer of power. They are particularly suitable for the linear movement of tables and slideways, to which a hydraulic piston may be directly coupled. 

Water-based coolants, as diluted and used in service, are much cheaper than neat oils, and they offer remarkable economic benefits in the applications to which they are best suited. (Neat oils, however, are preferred for some machining processes - usually involving severe operations - where they give overall production economies and reduced machine-tool maintenance.)... 

Some of the recently developed high-performance EP soluble oils have a cutting performance that almost matches that of additive-type neat oils, and they are particularly suitable for demanding operations in machine tools whose design allows the use of water-based fluids. 

Two factors militate against the universal use of water-based fluids. Very severe machining operations call for a lubrication performance that is beyond the capacity of such fluids, and the design of some machine tools means that water cannot be used because of the risk of cross-contamination with machine lubricants. In these instances, neat cutting oil is the only fluid that can provide the required performance. 

Anderson, E., Fine, C. and Parker, G. (2000) Upstream volatility in the supply chain the machine tool industry as a case study. Prod Oper Manag, 9(3), 239-261. 

Machine operator, responsibility of, 25 477 Machinery cast scrap, 22 410 Machine-tool accessories, molybdenum in, 27 14... 

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