Grinding with patterned grinding wheels

Denkena, Berend; Grove, Thilo; Göttsching, T.

doi:10.1016/j.cirpj.2014.10.005

Cited by 59 publications

(16 citation statements)

References 10 publications

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“…Grinding with cubic boron nitride wheels continually gains importance for the machining of hardened steels and many investigations focus on increasing the productivity of rough grinding processes. In order to improve the performance of CBN wheels, Aurich and Denkena focus on the patterning of the abrasive layer [9,10]. Marschalkowski and Uhlmann work specifically on the tool design [11] and use of electroplated tools [12] for high speed and high performance grinding processes.…”

Section: Introductionmentioning

confidence: 99%

High performance peel grinding of steel shafts using coarse electroplated CBN grinding wheels

Denkena

Krödel

Wilckens

2021

Prod. Eng. Res. Devel.

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Grinding is widely known for its low material removal rates and high surface quality. However, recent developments in production processes for cubic boron nitride (CBN) abrasive grains have led to commercially available grain sizes larger than 300 µm. These superabrasive CBN-grains allow higher material removal rates during grinding of hardened steel components. Currently, these components are pre-machined with turning processes before hardening and finishing the work piece by grinding. However, the turning process can be eliminated by grinding with coarse CBN-grains since higher depths of cut are achievable when machining hardened components. This paper explores the limits of grinding wheels using grains with a size of B602 during soft and hard machining in comparison to conventional B252 grains. It is shown that the use of coarser grains leads to lower process forces, higher (tensile) residual stress and higher surface roughness. Residual stress and surface roughness are of less importance as these grains are to be used mainly in roughing operations with ensuing finishing operations for the required surface properties. Over all investigations, especially in hard machining, neither grain nor tool wear was observed for the B602 grains, whereas the B252 tool was severely clogged during the experiments. Additionally, the grinding force ratio indicates that the coarse grain tools have not yet reached their productivity limit as it increases over all investigated feeds. This indicates improving tool performance with lower amounts of rubbing for increasing feed rate during hard grinding and shows the potential for the industrial use of higher feed rates with larger grains.

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Section: Introductionmentioning

confidence: 99%

High performance peel grinding of steel shafts using coarse electroplated CBN grinding wheels

Denkena

Krödel

Wilckens

2021

Prod. Eng. Res. Devel.

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“…The grinding temperature of discontinuous grinding with various grooved grinding wheels was studied by Fang [14], Denkena [15], Mohamed [16], Azarhoushang [17] and Li [18]. Li [18] established the analytical model of grinding temperature for textured grinding wheels.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Numerical Simulation of the Intermittent Feed High-Speed Grinding of TC4 Titanium Alloy

Jiao

Zhou

Deng

2019

Metals

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This paper proposes intermittent feed high-speed grinding, which shows considerable advantages in terms of reducing grinding temperature, relieving grinding wheel blockage and improving workpiece surface integrity. In this grinding, the continuous feed mode of the workpiece is changed into the normal feed + fast retreat reciprocating feed mode by a fast linear feed worktable. By reasonably setting the normal feed distance of single grinding, the action time of the grinding wheel and workpiece is reduced, so that the grinding heat transfer process does not reach a stable state, reducing the grinding temperature during single grinding. Besides this, the surface temperature is cooled to nearly room temperature and the grinding wheel is flushed by the timely retreating of the grinding wheel to allow the grinding fluid to enter the grinding zone fully, which greatly reduces the phenomenon of heat accumulation and grinding wheel loading. An intermittent feed high-speed grinding experiment on Ti-6Al-4V (TC4) titanium alloy was systematically carried out, and the influence of the grinding parameters on grinding force and grinding temperature was deeply analyzed. The instantaneous grinding temperature field and thermal stress field of TC4 titanium alloy in intermittent feed high-speed grinding were constructed with the finite element method. The surface morphology of the grinding wheel and TC4 titanium alloy specimens after intermittent feed grinding were analyzed and were compared with those after traditional continuous grinding. It was found that the curves of the grinding force and temperature varied with time in the process of machining, consisting of many “pulse” peaks. Under the same grinding parameters, the magnitude of the grinding force is the same as that of continuous grinding. In a certain range, the grinding temperature is greatly affected by the single feed distance and the interval time. The numerical simulation results are in good agreement with the experimental results, and the error is controlled within 12%. Compared with traditional high-speed grinding, under the same process parameters, the grinding temperature is greatly reduced, the surface integrity of the workpiece is better, and the clogging of the grinding wheel is greatly reduced.

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“…[33][34][35] A method for the structuring of grinding wheels was employed, and effect of coolant flow on the wear of the wheel is investigated. 36 Grinding wheels and cutting tools with a different bond and matrix materials were developed and fabricated in recent years. Diamond-coated fibers produced by the chemical vapor deposition or coarsegrained diamond were used for grinding work as abrasive grain.…”

Section: Introductionmentioning

confidence: 99%

Grinding of flat glass with Fe- and Cu-based diamond tools

Ozturk

2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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Preparation of grinding wheels is the most important effective factor in glass machining. This article presents the comparison of the iron-and copper-based grinding tools. The performance of the tools is investigated based on technical and commercial aspects using same cutting speeds, feeds, and sizes of diamond grits. Scanning electron microscope is used in order to observe the microstructures of cutting tools. The service life of the grinding tools is determined on the production line in a flat glass plant. A lifetime of Fe-based diamond tools is longer compared to the copper-based wheels. The impact of metal bond materials on the service life is examined. The results show that the Fe-based tools are more economical and more useful for grinding of glass. The holding of Fe-based bonding to diamond grit is stronger than the copper-based ones.

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Grinding with patterned grinding wheels

Cited by 59 publications

References 10 publications

High performance peel grinding of steel shafts using coarse electroplated CBN grinding wheels

High performance peel grinding of steel shafts using coarse electroplated CBN grinding wheels

Experimental Study and Numerical Simulation of the Intermittent Feed High-Speed Grinding of TC4 Titanium Alloy

Grinding of flat glass with Fe- and Cu-based diamond tools

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