Experimental Study on Deburring, Form Error and Surface Roughness in Orbital Drilling of Hardened Steel

Shi Fang Chen; Jin Xie; You Wang Zhuo

doi:10.4028/www.scientific.net/AMR.135.331

Paper Titles

Study on Axial Turning of Engineering Ceramics
p.309

Quantitative Evaluation of the Uniformity of Abrasive Distribution Based on Image Processing
p.314

Simulation and Design of Experimental Equipment for Two-Phase Compulsive Circulation Flows Finishing
p.319

A Deterministic Method to Predict Geometrical Interference between Grinding Wheel and Workpiece for Ultra-Precision Aspherical Grinding
p.325

Experimental Study on Deburring, Form Error and Surface Roughness in Orbital Drilling of Hardened Steel
p.331

Mechanical Properties and Experimental Study of a Composite Polishing Plate during Super-High Polishing
p.337

Study on Surface/Subsurface Crack Mechanism in Ultrasonic Vibration Added Grinding of Ceramics
p.343

Optimal Design of Rotary Ultrasonic Vibrator and Research on its Machining Experiments
p.349

Optimization of Segmented Grinding Wheel Matrix Based on Super High-Speed Grinding
p.355

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 135Experimental Study on Deburring, Form Error and...

Experimental Study on Deburring, Form Error and Surface Roughness in Orbital Drilling of Hardened Steel

Abstract:

An orbital drilling approach is proposed in machining hardened steel hole. In this study, the orbital drilling performance was investigated in connection with deburring, form error and surface roughness. First, the hole machinability of various steels was analyzed to compare an orbital drilling with a vertical drilling; then the orbital drilling experiments of hardened steel were carried out to investigate the effects of orbital drilling parameters such as tool speed, orbital feed and screw-pitch on form error and surface roughness. It is shown that the orbital drilling approach is feasible to machine the hole of hardened steel with smooth surface and little burrs using an AlTiN coating WC drill bite. Moreover, the hole form accuracy and surface roughness can be improved with increasing the tool speed and the working space, or decreasing orbital speed and orbital pitch. It is also found that the hole edge burrs can be reduced by choosing a low orbital speed. It is indicated that the form error may be greatly decreased by using a compensation approach through a new CNC tool orbital path.