Polycrystalline diamond edge quality and and surface integrity following electrical discharge grinding

Thoe, T.B.; Aspinwall, D.K.; Wise, M. L. H.; Oxley, I.A.

doi:10.1016/0924-0136(95)01891-3

Cited by 32 publications

(21 citation statements)

References 2 publications

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“…Published papers detailing the EDM of PCD are reasonably extensive [10][11][12], however as far as the authors are aware, there is very little information available dealing specifically with the sparking of CVD diamond, although work on single crystal natural diamond is relevant [13,14]. The electrical resistivity values for conductive CVD diamond (CVDITE CDE) and PCD are up to 1000 [15] and 14,700 cm [16], respectively.…”

Section: Electrical Discharge Machiningmentioning

confidence: 99%

Electrical discharge machining of conductive CVD diamond tool blanks

Olsen

Aspinwall

Dewes

2004

Journal of Materials Processing Technology

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Section: Electrical Discharge Machiningmentioning

confidence: 99%

Electrical discharge machining of conductive CVD diamond tool blanks

Olsen

Aspinwall

Dewes

2004

Journal of Materials Processing Technology

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“…Published papers detailing the EDM of PCD are reasonably extensive [12][13][14], however as far as the authors are aware, there is very little information available dealing specifically with the EDM of CVD diamond [11], although work on single crystal natural diamond is available [15]. Previous research by the authors has shown that doped CVD diamond is machinable using EDM, however at relatively low cutting speeds (∼50% of PCD) [16].…”

Section: Introductionmentioning

confidence: 98%

Machining of electrically conductive CVD diamond tool blanks using EDM

Olsen¹,

Dewes²,

Aspinwall³

2004

Journal of Materials Processing Technology

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“…The problem in using a form and roughness tester is positioning, orienting and fixturing the diamond grain as well as the morphological errors coming from the stylus and fixture. A tactile profilometer is used in [9] for measurement of the edge quality of the polycrystalline diamonds. For SEM, the problem is the non-conductivity of the diamond; therefore always sample preparation have to be done and special consideration must be given to have a homogenous and thin layer of metallic coating on very clean diamond samples.…”

Section: Introductionmentioning

confidence: 99%

Comparison of transparent objects metrology through diamond cutting edge radii measurements

Akbari

Knapp

Wegener

2016

CIRP Journal of Manufacturing Science and Technology

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The efficiency of cutting is largely influenced by cutting edge radii. When considering the correct cutting edge radius in the simulations, correct cutting characteristics can be predicted and thus the cutting process optimized. Sharpening the cutting edge of the tool to a specific optimized radius subsequently will improve the service life of the tool, workpiece quality, and performance of cutting. Measuring cutting edge radii of tools already is challenging, especially when measuring cutting edge radii of diamonds cutting tools because of their transparency and their dimension in the micrometer range. Defining a sound framework for selecting the appropriate metrology of transparent objects and clarifying the correct measurement parameters, settings, and proper sample preparation are the main achievement of current work. Tactile profilometer, confocal and focus variation light microscopy, imprinting, scanning electron microscopy (SEM) stereoscopy, and atomic force microscopy (AFM) are used to measure the cutting edge radius of diamonds. The identification of the cutting edge radii are done based on the methodology of the least square circle fit over cutting edge radius, and is determined iteratively. Estimations of uncertainties of the measurements are explained in detail and compared. The same measurement techniques and methodologies can also be applied to measure other transparent or difficult to measure materials. The results of different measurement technologies for the same diamond specimens are compared. In the end, one choice from the utilized measurement methods is suggested based on Analytic Hierarchy Process (AHP), which is one of the methods in Multiple Criteria Decision Analysis (MCDA). The selection process and the proposed set of evaluation criteria can also be applied to other measurements.

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Polycrystalline diamond edge quality and and surface integrity following electrical discharge grinding

Cited by 32 publications

References 2 publications

Electrical discharge machining of conductive CVD diamond tool blanks

Electrical discharge machining of conductive CVD diamond tool blanks

Machining of electrically conductive CVD diamond tool blanks using EDM

Comparison of transparent objects metrology through diamond cutting edge radii measurements

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