Wear mechanism model for grinding of PcBN cutting inserts

Denkena, Berend; Grove, Thilo; Behrens, Leif; Müller-Cramm, Dominik

doi:10.1016/j.jmatprotec.2019.116474

Cited by 14 publications

(6 citation statements)

References 8 publications

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“…Previous studies have shown that the specific cutting energy increased by e c = 500 J/mm 3 per = 1 mm 3 of ground PcBN. In conclusion, the energy consumption of the process and the tool wear increased significantly with increasing 15 , 16 . Therefore, the grinding tool has to be cleaned and sharpened to maintain its process capability.…”

Section: Introductionmentioning

confidence: 85%

“…The conditioning infeed is kept constant at a ed = 1 µm and 30 strokes are performed. A lower circumferential speed v c = 15 m/s is chosen, which is adapted to the typical cutting speeds for less wear on the grinding tool without affecting the roughness of the ground workpiece 8 , 15 . At the different stages, 3D profiles of the worn topography of the abrasive layer are generated using a 3D white-light microscope InfiniteFocus G5 from Alicona (Fig.…”

Section: Experimental Setup and Methodsmentioning

confidence: 99%

“…A high feed rate v fa = 12 mm/min and a low cutting speed corresponding to test series 1 is selected. According to the criteria of test series 1, this causes less wear on the grinding tool without affecting the roughness of the ground workpiece 8 , 15 . The parameter variation of the conditioning process is performed ceteris paribus the first test series (Table 1 ) and, in addition, the infeed of the conditioning tool per stroke a ed is varied as shown in Table 2 .…”

Section: Experimental Setup and Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Wear-adaptive optimization of in-process conditioning parameters during face plunge grinding of PcBN

Denkena¹,

Krödel-Worbes²,

Müller-Cramm³

2022

Sci Rep

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Polycrystalline cubic boron nitride is a very hard material. Machining of this material is performed by grinding with diamond tools. Due to its high hardness, grinding tools are subjected to severe microscopic and macroscopic tool wear. This wear leads to short tool life and results in high effort in conditioning the abrasive layer. Contrary to the usual conditioning of diamond grinding wheels with diamond dressing tools, this study investigates a conditioning process based entirely on the use of white corundum cup rolls. These conditioning tools allow the in-process face plunge conditioning of vitrified bond diamond grinding tools. The circumferential speed of the conditioning tool and the average grain diameter of the corundum are identified as the main factors influencing the topography of the generated grinding layer. To describe the performance of the conditioning process, a specific conditioning removal rate $$Q_{sd}^{\prime }$$ Q sd ′ is derived. This parameter represents a cumulated variable that allows a comparison of different conditioning strategies. It is shown that an increase in $$Q_{sd}^{\prime }$$ Q sd ′ significantly counteracts microscopic wear on the abrasive layer. Therefore, optimized process parameters enable the process of in-process conditioning to significantly reduce wear on the grinding tool without increasing the process time or the non-productive time.

show abstract

Section: Introductionmentioning

confidence: 85%

Section: Experimental Setup and Methodsmentioning

confidence: 99%

Section: Experimental Setup and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Wear-adaptive optimization of in-process conditioning parameters during face plunge grinding of PcBN

Denkena¹,

Krödel-Worbes²,

Müller-Cramm³

2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The frame is a significant load-bearing component of the grader. Fatigue failure is a risk to be avoided for both workman and machine [1][2][3] , so it is significant to study the fatigue properties of the frame. Domestic and foreign scholars have done a lot of research on the fatigue properties of materials used in other types of engineering machinery [4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Wire Electrical Discharge Machining on Fatigue Properties of Q345B Materials

Wang

Wang²

2023

J. Phys.: Conf. Ser.

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To study the effect of wire electrical discharge machining (WEDM) on the fatigue performance of materials, the mechanical properties of Q345B material used in the grader frame were tested by the single-surface and double-surface of WEDM in this paper. Through the comparison and analysis of the test results, it is found that the yield strength and fatigue strength of the material processed by double-surface machining are 5.2% and 4.2% higher than those processed by single-surface machining, and the tensile strength has no obvious change.

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“…that the speci c cutting energy increases by e c = 500 J/mm 3 per V' w = 1 mm³ of ground PcBN. It can be stated that the energy consumption of the process and the tool wear increase signi cantly by increasing V' w [12,13]. To maintain the process capability of the grinding tool, it needs to be cleaned and sharpened.…”

Section: Introductionmentioning

confidence: 99%

Optimization of in-Process Conditioning Parameters During Face Plunge Grinding of PcBN

Denkena¹,

Krödel-Worbes²,

Müller-Cramm³

2021

Preprint

View full text Add to dashboard Cite

Polycrystalline cubic boron nitride (PcBN) is an extremely hard material. Machining of the material is performed by grinding with diamond tools. Due to its high hardness, the grinding tools underlie a severe microscopic and macroscopic tool wear. This wear leads to a short tool life and results in high effort in conditioning the abrasive layer. Contrary to the usual conditioning of diamond grinding wheels with diamond dressing tools, this study investigates a conditioning process based entirely on the use of white corundum cup rolls. These conditioning tools allow the in-process face plunge conditioning of vitrified bond diamond grinding tools. The circumferential speed of the conditioning tool and the average grain diameter of the corundum are identified as the main factors influencing the topography of the generated grinding layer. To describe the performance of the conditioning process, a specific conditioning removal rate Q’sd is derived. This parameter represents a cumulated variable that allows a comparison of different conditioning strategies. It is shown that an increase in Q'sd significantly counteracts microscopic wear on the abrasive layer. Therefore, optimized process parameters enable the process of in-process conditioning to significantly reduce the wear on the grinding tool without increasing the process time or the non-productive time.

show abstract

Wear mechanism model for grinding of PcBN cutting inserts

Cited by 14 publications

References 8 publications

Wear-adaptive optimization of in-process conditioning parameters during face plunge grinding of PcBN

Wear-adaptive optimization of in-process conditioning parameters during face plunge grinding of PcBN

Study on the Influence of Wire Electrical Discharge Machining on Fatigue Properties of Q345B Materials

Optimization of in-Process Conditioning Parameters During Face Plunge Grinding of PcBN

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