Experimental investigation on the effect of diamond type on the performance of single-point diamond turning (SPDT) of silicon

2021 ◽  
Author(s):  
Jayesh A. Navare ◽  
Charan Bodlapati ◽  
Robert Turnbull ◽  
Yuxiang Zhong ◽  
Hossein Shahinian
Keyword(s):  
Experimental Investigation ◽  
Single Point ◽  
Diamond Turning ◽  
Diamond Type

Experimental Investigation on Diamond Drilling of Potassium Di-Hydrogen Phosphate (KDP) Crystal

2008 ◽  
Author(s):  
Qiangguo Wang ◽  
Z. J. Pei ◽  
Hang Gao ◽  
N. J. Churi ◽  
Renke Kang
Keyword(s):  
Experimental Investigation ◽  
Single Point ◽  
Diamond Turning ◽  
Hydrogen Phosphate ◽  
Machine Material ◽  
Edge Chipping ◽  
Kdp Crystal ◽  
Machining Quality ◽  
Diamond Drilling ◽  
Electro Optic

KDP (potassium di-hydrogen phosphate) crystal is used to fabricate important electro-optic parts. It is a typical hard-to-machine material because it is soft, brittle, and anisotropic. Parts made of KDP usually have extremely high requirements for machining quality. Reported machining methods so far for KDP crystal include single point diamond turning, grinding, magnetorheological finishing, and polishing. This paper presents an experimental investigation on diamond drilling of KDP. Data of several output parameters (including grinding force and torque, surface roughness, and edge chipping) were collected and analyzed. Ultrasonic vibration was superimposed to the rotation of the tool to study its effects.

Simulation of Large Scale KDP Crystal Polishing by Computer Controlled Micro-Nano Deliquescence

2012 ◽  
Vol 497 ◽  
pp. 165-169 ◽  
Author(s):  
He Ping Zhang ◽  
Dong Ming Guo ◽  
Xu Wang ◽  
Hang Gao
Keyword(s):  
Large Scale ◽  
Surface Condition ◽  
Single Point ◽  
Damage Threshold ◽  
Diamond Turning ◽  
Water Soluble ◽  
Optical Elements ◽  
Kdp Crystal ◽  
Computer Controlled ◽  
Laser Induced Damage

Although Single Point Diamond Turning (SPDT) can do pretty well in optical surfacing of large scale KDP crystal, both the surface accuracy and integrity are considerably high; meanwhile as the defects of micro-waveness and stress are inevitable, the laser-induced damage threshold of KDP optical elements after SPDT still cannot be satisfied. Because of the characters of deliquescent and water-soluble, the process of computer controlled Micro-nano deliquescence is attempted to remove the residual micro-waveness on KDP surface after SPDT. Based on the assumption of Preston and the characters of Micro-nano deliquescence, the model of material removal ratio is suggested, the dwell time for ascertained KDP surface is solved, the processing of computer controlled Micro-nano deliquescence is simulated and the processed surface condition on theory is obtained. Besides, the influences of different parameters on the surfacing efficiency and accuracy are analyzed. Finally, three polishing tracks are comparatively analyzed. The simulation results are quite important in guiding the experimental polishing of large scale KDP by computer controlled Micro-nano deliquescence

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