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What is Cylindrical grinding?

External cylindrical grinding is one of the most common grinding processes and is mainly used for grinding rotationally symmetrical workpieces. It differs in the type of workpiece clamping and feed directions:

  • Peripheral-cross grinding between centers (plunge grinding)
  • Peripheral-longitudinal grinding between centers (oscillation grinding)
  • Centerless-peripheral-cross grinding (centerless plunge grinding)
  • Centerless-peripheral-longitudinal grinding (centerless through feed grinding)

The most common type of clamping in external cylindrical grinding is between centers. This means that the workpieces must be centered at the front and are driven by a workpiece driver.

For external cylindrical grinding, long, heavy or thin workpieces must be additionally supported by steady rests so that the necessary form and geometry requirements can be met. In the series production of tools like: drills, cutters, step drills, peel grinding is increasingly used. Here the cutting is done by a higher infeed divided into a few cuts and a reduced feed motion (oscillation motion).

In centerless grinding the workpiece is fixed by 3 points. This fixation is determined by the components grinding wheel, control wheel and support ruler. The workpiece is simultaneously guided and machined on the periphery. In centerless plunge grinding, the grinding wheel moves radially towards the workpiece. The following workpieces are produced with this grinding process: Jet needle for injection systems, bearing seats of camshafts, valve tappets for the automotive industry, to name but a few. In centerless through feed grinding, which is a typical serial grinding process, pistons for the automotive industry, shafts, rods and also elements for the rolling bearing industry are produced.

Internal cylindrical grinding:

Internal cylindrical grinding is one of the most common and also most difficult grinding operations. A distinction is made here between:

  • Peripheral-cross grinding (plunge grinding), and
  • Peripheral longitudinal grinding (oscillation grinding)

The reasons for the problems in internal grinding operations are the large contact arcs in the contact zone between the grinding wheel and the workpiece bore, a vibration behavior of the components involved in the active grinding process (high-frequency spindle, mandrel for the grinding wheel, workpiece and bore geometry) which is difficult to control. In internal cylindrical oscillation grinding, a radial infeed is performed first, followed by the oscillation movement, since the surface to be ground is usually narrower than the internal grinding wheel. For both oscillation grinding and plunge-grinding, care should be taken to ensure that the diameter ratio of the internal grinding wheel is 0.7 - 0.8 of the bore diameter. This is important for optimum chip removal and coolant supply.  The following must be observed for the mandrel:

  • It should run exactly round to reduce vibrations
  • Only hardened material, heavy metal or tungsten metal should be used
  • Always select the shortest possible mandrel length
Precision Surfacing Solutions family of brands
Precision Surfacing Solutions Wheel BrandPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersPrecision Surfacing SolutionsPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersLapmaster WoltersPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersBarnes HoningPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersElb SchliffPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersISOGPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter Woltersaba GrindingPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersReformPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersKehrenPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersMicronPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter WoltersPeter WoltersPSSLapmasterBarnesISOGElbabaReformKehrenMicronPeter Wolters
  • PRECISION SURFACING SOLUTIONS

    PRECISION SURFACING SOLUTIONS supports manufacturers in a wide variety of industries in which precision grinding, lapping, polishing, deburring and advanced materials processing equipment is commonly used. They all need high-quality, high-precision, stable and well-engineered machines to manufacture high-quality work pieces.

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    Founded in Chicago in 1948 as a manufacture of lapping and polishing machines for the mechanical seal market, Lapmaster has grown to a worldwide solution provider for more than 20 industries like precision optics and advanced materials.

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    Since 1907 Barnes has been considered a world leader in developing innovative honing and bore finishing technology and processes. The earliest Barnes honing machines were the first to make honing a practical and efficient means of finishing automotive cylinder bores in a production environment.

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    Since May 2020, the brand ISOG belongs to the globally active Precision Surfacing Solutions Group. With the addition of ISOG to the already existing strong brands within the Group, PSS further strengthens its position as a leading supplier of high quality, best in class technologies in the market of surface quality enhancement solutions.

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    ELB-Schliff Werkzeugmaschinen GmbH has been producing surface and profile grinding machines for over 60 years. The company was founded by Edmund Lang in the city of Babenhausen which led to the name "ELB-Schliff".

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    The aba company was founded in 1898 under the name "Messwerkzeugfabrik Alig & Baumgärtel Aschaffenburg", hence the initials aba. Today, the aba Grinding Technologies is exclusively focused on the advancement and production of precision surface and profile grinding machines.

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    Produced in Germany since 2009, MICRON machines are compact and dynamically rigid grinding machines especially designed for Creep Feed and Profile grinding. MICRON is an industry leader in grinding of Hydraulic components like stators, rotors and van pumps.

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  • Peter Wolters

    Founded in Germany in 1804 by Mr. Peter Wolters, Peter Wolters has been producing lapping, polishing and fine grinding equipment since 1936. In 2019 Precision Surfacing Solutions acquired the division Wafer plant and service business for photovoltaic and special materials of Meyer Burger. Further Information can be found at www.precision-surface.ch

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