rotary percussive drill

2014 ◽  
pp. 1146-1146
Keyword(s):  
Percussive Drill

Transmission and dissipation of stress wave energy at a percussive drill rod joint

1987 ◽  
Vol 6 (3) ◽  
pp. 157-173 ◽  
Author(s):  
R. Beccu ◽  
B. Lundberg
Keyword(s):  
Stress Wave ◽  
Wave Energy ◽  
Percussive Drill

Identification of a percussive drill rod joint from its response to stress wave loading

1996 ◽  
Vol 18 (3) ◽  
pp. 281-290 ◽  
Author(s):  
P. Berzi ◽  
R. Beccu ◽  
B. Lundberg
Keyword(s):  
Stress Wave ◽  
Wave Loading ◽  
Response To Stress ◽  
Percussive Drill

scholarly journals Experimental Investigations on Penetration Rate of Percussive Drill

2015 ◽  
Vol 11 ◽  
pp. 89-99 ◽  
Author(s):  
S.B. Kivade ◽  
Ch. S.N. Murthy ◽  
Harsha Vardhan
Keyword(s):  
Penetration Rate ◽  
Experimental Investigations ◽  
Percussive Drill

Experimental Research on Drilling and Sampling of Lunar Soil Simulant

2012 ◽  
Vol 233 ◽  
pp. 218-223 ◽  
Author(s):  
X. Shi ◽  
Q. Quan ◽  
De Wei Tang ◽  
S. Jiang ◽  
X. Hou ◽  
...  
Keyword(s):  
Lunar Soil ◽  
Feed Ratio ◽  
Soil Conditions ◽  
Clear Correlation ◽  
Lunar Exploration ◽  
Rotary Drilling ◽  
Strongly Coupled ◽  
Geological Information ◽  
Exploration Mission ◽  
Percussive Drill

China is conducting a lunar exploration mission named “Chang’e project”. The goal of the exploration mission is to obtain the drilling core without breaking the original geological information. Since the characteristics of drilling object in lunar exploration mission are different from the soil on the earth, efforts should be greatly made on special sampling methods, sampling drills and the appropriate sampling strategies. Herein, we proposed a novel drilling and coring method, in which a soft-bag is mounted in a rotary-percussive drill for lunar soil sampling. In the process of lunar soil drilling, the driving parameters of several moving units are strongly coupled. The moving units should work cooperatively in order to acquire high coring rate and low power consumption. The relationship between the coring quantity and the drilling parameters will be discussed through experiments. The research showed a clear correlation between rotary drilling torque, sample quantity and rev-feed ratio under specific lunar soil conditions.

Auto-Gopher-2 - Wireline Deep Sampler Driven by Percussive Piezoelectric Actuator and Rotary EM Motors

2016 ◽  
Vol 100 ◽  
pp. 207-212 ◽  
Author(s):  
Yoseph Bar-Cohen ◽  
Kris Zacny ◽  
Mircea Badescu ◽  
Hyeong Jae Lee ◽  
Stewart Sherrit ◽  
...  
Keyword(s):  
Solar System ◽  
Field Test ◽  
Piezoelectric Actuator ◽  
First Generation ◽  
Penetration Rate ◽  
Lessons Learned ◽  
Biologically Inspired ◽  
Rate Of Penetration ◽  
Solar System Exploration ◽  
Percussive Drill

Two of the key purposes of future NASA’s solar system exploration of planetary bodies are the search for potentially preserved bio-signatures and for habitable regions. To address these objectives, a biologically inspired wireline deep rotary-percussive drill, called Auto-Gopher, has been developed. This drill employs a piezoelectric actuated percussive mechanism for generating impulsive stresses and breaking formations, and an electric motor to rotate the bit to break material and remove the cuttings. Initially, the drill was designed as percussive mechanism for sampling ice and was demonstrated in 2005 at Lake Vida, Antarctica, reaching about 2 m depth. The lessons learned suggested there is a need to augment the percussive action with bit rotation in order to maximize the penetration rate. The first generation implementation of the rotary augmentation was focused on the demonstration of this capability. In 2012, during the 3-day field test, the drill reached a 3-meter deep in gypsum. A separate mechanism was used to break and remove the cores. The average drilling power consumption was in the range of 100-150 Watts, while the rate of penetration was approximately 2.4 m/hr. Currently under development is the second-generation drill, called Auto-Gopher 2. The drill will be fully autonomous. In this paper, the capabilities that are being integrated into the Auto-Gopher-2 are described and discussed.

A theory of percussive drill bit penetration

1972 ◽  
Vol 9 (4) ◽  
pp. 543-544 ◽  
Author(s):  
P.K. Dutta
Keyword(s):  
Drill Bit ◽  
Percussive Drill

Investigation of noise and vibration in percussive drill rods

1979 ◽  
Vol 16 (6) ◽  
pp. 363-376 ◽  
Author(s):  
I. Hawkes ◽  
J.A. Burks
Keyword(s):  
Noise And Vibration ◽  
Percussive Drill
Sign in / Sign up

Export Citation Format

Share Document