Cylindricity measurement by the V-block method – Theoretical and practical problems

Nanostructured and composite WC-12Co coatings were prepared by means of the supersonic spray process (HVOF). The microstructure and composition of WC-12Co nanostructured powder were analyzed by scanning electron microscope (SEM) and transmission electron microscope (TEM). Investigations revealed nano grains of WC with the size in the range of 50-500 nm. The nanostructured sprayed coating was analysed by SEM and phase composition was investigated by X-ray diffractometer (XRD). A denser coating structure with higher hardness was observed compared to conventional coating with a small amount of W2C, WC1−x, W and some amorphous phase. Young’s modulus and hardness were determined by depth sensing indentation in HVOF sprayed WC-12Co nanostructured coatings. Results were compared to conventional coatings and the relevance of the nanostructure was analyzed. An indentation size effect was observed on the polished surface and cross-section of both coatings. Data provided by indentation tests at maximum load allow to estimate hardness and elastic modulus. Enhanced nanomechanical properties of conventional coating in comparison to nanostructured one were observed. Nanostructured coatings WC-12Co (N) revealed significantly better corrosion resistance.

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“…The topography of the coatings after polishing was analyzed by means of a talysurf CCi-lite non-contact 3D profiler [10,11].…”

Section: Methodsmentioning

confidence: 99%

Mechanical Properties and Corrosion Resistance of HVOF Sprayed Coatings Using Nanostructured Carbide Powders

Żórawski

Makrenek

Góral

2016

Archives of Metallurgy and Materials

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“…The authors [18] show that the V-block methods can be applied to measurement of cylindricity, if a mathematical transformation of the measured profile into the real one is performed. Therefore, the mathematical relationships presented in [18] have been used to obtain the profile F(φ) by (3) …”

Section: Generation Of Real Profile R(φ) and Profile Measured By Sensmentioning

confidence: 99%

“…Therefore, the mathematical relationships presented in [18] have been used to obtain the profile F(φ) by (3) …”

Section: Generation Of Real Profile R(φ) and Profile Measured By Sensmentioning

confidence: 99%

“…Another work was carried out in order to use the V-block method to the cylindricity measurement. The results of statistical verification of the V-block cylindricity measurement [18] show that its maximal error is equal to about 19% of the standard non-reference method error.…”

Section: Introductionmentioning

confidence: 96%

“…Thus, the research results presented in [12][13][14][15][16][17] show that the V-block method can be successfully used to measure the roundness and cylindricity deviations [18][19] of large cylinders and to perform in-situ measurements directly on a machine tool. However, there is no research associated with the V-block waviness measurement of cylindrical surfaces in the range of 16-50 UPR.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical And Practical Investigations Of V-Block Waviness Measurement Of Cylindrical Parts

Adamczak¹,

Zmarzły²,

Janecki³

2015

Metrology and Measurement Systems

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The paper relates to the problem of adaptation of V-block methods to waviness measurements of cylindrical surfaces. It presents the fundamentals of V-block methods and the principle of their application. The V-block methods can be successfully used to measure the roundness and waviness deviations of large cylinders used in paper industry, shipping industry, or in metallurgy. The concept of adaptation of the V-block method to waviness measurements of cylindrical surfaces was verified using computer simulations and experimental work. The computer simulation was carried out in order to check whether the proposed mathematical model and V-block method parameters are correct. Based on the simulation results, a model of measuring device ROL-2 for V-block waviness measurements was developed. Next, experimental research was carried out consisting in evaluation of waviness deviation, initially using a standard non-reference measuring device, and then using the tested device based on the V-block method. Finally, accuracy of the V-block experimental method was calculated.

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Monitoring and Modeling of Cylindricity Error Using Vibration Signals in Drilling

Mary¹,

Dinakaran

Balaji

et al. 2021

Handbook of Smart Materials, Technologies, and Devices

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Cylindricity is a key factor that affects the assembly and dynamic performance characteristics of mechanical components. Real-time monitoring of cylindricity error during machining reduces the wastages and ensures the quality of the drilled holes. The possible causes of cylindricity error are the run out, mechanical looseness, misalignment, etc. A novel vibration-based monitoring method to predict the cylindricity error during drilling process is developed and presented in this chapter. An adaptive neuro fuzzy system models the cylindricity error with the peak amplitude of vibration at 1xRPM, process parameters, speed, and feed as inputs. The experimental study showed that the ANFIS model is capable of predicting the cylindricity error with 92.4% of accuracy.

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Cylindricity measurement by the V-block method – Theoretical and practical problems

Cited by 40 publications

References 15 publications

Mechanical Properties and Corrosion Resistance of HVOF Sprayed Coatings Using Nanostructured Carbide Powders

Mechanical Properties and Corrosion Resistance of HVOF Sprayed Coatings Using Nanostructured Carbide Powders

Theoretical And Practical Investigations Of V-Block Waviness Measurement Of Cylindrical Parts

Monitoring and Modeling of Cylindricity Error Using Vibration Signals in Drilling

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