What is Precision Manufacturing?
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What is a Precision Manufacturing and how it is defined in an industrial application?
Precision manufacturing begins with precision engineering, the tolerances and requirements are specified by the customer are identified and documented. American Society of Precision Engineering (ASPE). Precision engineering. A number of definitions of precision engineering exist, depending upon whom you ask and when. Definitions range from the general esoteric to the specific. “Precision Engineering is a discipline encompassing the design, development, and measurement of and for high-accuracy components. By extension, the field also includes the design of systems in which high dimensional accuracy is a central concern, as well as the design of machine tools and measuring machines to accomplish the necessary manufacture and measurement.” - ASPE
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How does precision manufacturing compare to normal and ultra-machining?
Normal machining applies to appliances and automotive, general purpose, engine parts, optical brackets, body, holders, framework, stands and other support structures. These tolerances are in the 200 to 50 um range.
Precision machining applies to parts for time keeping devices, watches, bearings gears, ball screws, hydraulic fittings, indexing, cam and lobe, rotary and rotating hydraulic parts, servo parts, valves aerospace and aircraft components. Optical precision machining would include lenses, prisms, optical fiber, xray, mirrors, and laser mirrors. These tolerances are in the 5 to .5 um range.
Ultra-Precision machining applies to parts for measurement tools, military specifications, gauge blocks, and precision x-y tables. Ultra-precision components can be found in optical flats, Fresnel lenses, and diffraction gratings. These tolerances are in the .05 to .005 um range.
What tools are used in normal, precision and ultra-precision manufacturing?
Normal manufacturing tools include turning, milling machines, Lathes and drill stands. Lapping, Honing, Boring, and Grinding Machines. Precision machining tools include precision grinding, and turning machines. Ultra-precision manufacturing uses free abrasive machining.
When should you specify a Precision Manufacturing?
When manufacturing requires critical tolerances to achieve a certain outcome, that need to be maintained from a precision manufacturing are used to solve or achieve fitting issues and assist in automatic assembly requirements. Precision parts improve drop in or compatibility components.
In order to improve quality a higher machine accuracy capability is required. These then reduce metal scrap, rework, and repeated inspection of parts. Where two parts of a bearing surface are required to achieve longer wear/fatigue life precision manufacturing and an improvement in precision engineering and manufacturing can advance future technology and science.
The elements of Precision manufacturing
The speed at which the tools are turning affect temperature and tool life. Tool material and toughness. The feed rate and surface finish requirements. Power/MRR accuracy MRR mass precision cost. Increasing speed may reduce machining and production time. This may reduce cost but if you need to constantly change tools, production time is wasted. The proper speed, tool material, and feed rate will ultimately control your costs.
Precision manufacturing Common Fluids
In order to achieve a precision machined surface, proper cutting fluids will have an affect on surface integrity and service performance. The effect of cutting fluids on the surface quality of a typical blade material two universal cutting fluids. Element composition, surface morphology, residual stress and hardness of the machined surfaces. Cutting fluids are not to be used to reduce cutting forces in precision machining. Cutting fluids are designed to reduce heat from frictional and shear heating. Precision manufacturing relies on the elimination of material deformation coefficients of friction at the tool chip and tool-work interface. Cutting fluids also help reduce metal scrap into smaller parts for removal.
Normal machining applies to appliances and automotive, general purpose, engine parts, optical brackets, body, holders, framework, stands and other support structures. These tolerances are in the 200 to 50 um range.
Precision machining applies to parts for time keeping devices, watches, bearings gears, ball screws, hydraulic fittings, indexing, cam and lobe, rotary and rotating hydraulic parts, servo parts, valves aerospace and aircraft components. Optical precision machining would include lenses, prisms, optical fiber, xray, mirrors, and laser mirrors. These tolerances are in the 5 to .5 um range.
Ultra-Precision machining applies to parts for measurement tools, military specifications, gauge blocks, and precision x-y tables. Ultra-precision components can be found in optical flats, Fresnel lenses, and diffraction gratings. These tolerances are in the .05 to .005 um range.
What tools are used in normal, precision and ultra-precision manufacturing?
Normal manufacturing tools include turning, milling machines, Lathes and drill stands. Lapping, Honing, Boring, and Grinding Machines. Precision machining tools include precision grinding, and turning machines. Ultra-precision manufacturing uses free abrasive machining.
When should you specify a Precision Manufacturing?
When manufacturing requires critical tolerances to achieve a certain outcome, that need to be maintained from a precision manufacturing are used to solve or achieve fitting issues and assist in automatic assembly requirements. Precision parts improve drop in or compatibility components.
In order to improve quality a higher machine accuracy capability is required. These then reduce metal scrap, rework, and repeated inspection of parts. Where two parts of a bearing surface are required to achieve longer wear/fatigue life precision manufacturing and an improvement in precision engineering and manufacturing can advance future technology and science.
The elements of Precision manufacturing
The speed at which the tools are turning affect temperature and tool life. Tool material and toughness. The feed rate and surface finish requirements. Power/MRR accuracy MRR mass precision cost. Increasing speed may reduce machining and production time. This may reduce cost but if you need to constantly change tools, production time is wasted. The proper speed, tool material, and feed rate will ultimately control your costs.
Precision manufacturing Common Fluids
In order to achieve a precision machined surface, proper cutting fluids will have an affect on surface integrity and service performance. The effect of cutting fluids on the surface quality of a typical blade material two universal cutting fluids. Element composition, surface morphology, residual stress and hardness of the machined surfaces. Cutting fluids are not to be used to reduce cutting forces in precision machining. Cutting fluids are designed to reduce heat from frictional and shear heating. Precision manufacturing relies on the elimination of material deformation coefficients of friction at the tool chip and tool-work interface. Cutting fluids also help reduce metal scrap into smaller parts for removal.
