Results 221 to 230 of about 6,031 (262)

Deep Small Hole Drilling with EDM

1996
This paper discusses a technological application of deep small hole drilling with EDM where the ratio between depth and width is about 10. Many different authors suggested new approaches when producing small and deep holes (d≤lmm) which is a rather complicated technological task.
M. Znidarsic, M. Junkar
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Structural Optimization of Drilling Bed for Deep Hole Drilling Machine

Applied Mechanics and Materials, 2014
Taking the drilling bed of Z8016 deep hole drilling machine as the research object, a modal analysis of drilling bed structure is performed by ANSYS software. Assuming that the low-order natural frequencies basically remain unchanged, the structure of the drilling bed is analyzed and modified so as to decrease its weight.
Yin Sai Guo, Yi Zhang, Ming Ke Cheng
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Hole roundness in deep-hole drilling as analysed by Taguchi methods

The International Journal of Advanced Manufacturing Technology, 2004
This work investigates the roundness of holes by application of Taguchi methods to BTA deep-hole drilling with reference to process factors. Taguchi methods and statistical techniques are used in experimental layout, in the analysis of each control factor, and in prediction of the optimum setting for control factors. A set of confirmatory tests is then
Chyn-Shu Deng, Jih-Hua Chin
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Deep-Hole Drilling

Abstract This article discusses the deep-hole drilling residual stress measurement technique for measuring the strain of the component during stress relief from the removal of a small amount of material. It outlines coaxial trepanning to release the residual stresses, reference hole diameter remeasurement in the stress-free state ...
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Optimization of Deep Hole Drilling Processes with Smallest Drilling Diameters

2002
The machining of tough and high tensile materials with single-edge drilling tools of smallest diameter is only dissatifyingly mastered, because of the applied tools being very brittle and therefore fragile. The situation is made difficult by the opposed demands for higher productivity with respective cutting speed and rate of feed simultaniously to ...
U. Heisel, M. Stortchak, R. Eisseler
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Deep Hole Drilling with Wireline Equipment

1988
Heath & Sherwood Drilling has developed over the past 17 years, some unique equipment and procedures for the drilling of deep diamond cored holes. This paper will present some details on the rod strings, derricks, drill equipment, and techniques used by Heath & Sherwood Drilling to drill wireline cored holes to over 15,000 feet in depth.
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Investigation of Forces in Deep Hole Bone Drilling

Volume 3: Biomedical and Biotechnology Engineering, 2018
Deep hole drilling is required to install prosthetic devices in surgical implantation. Compared to the common bone drilling processes, deep hole bone drilling is performed with a larger hole depth (i.e., up to a depth of approximately 35 mm in cochlear implantation) using a high ratio of the length to diameter of the drill bit.
JuEun Lee, Serena Chu, Craig L. Chavez
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Stainless Steel Deep Hole Drilling with EDM

2021
The electro discharge machining is a promising production technique allowing to overcome the limits of standard drilling process especially in case of small and deep holes production in tough materials. A drawback of the EDM technique is the necessity to find optimal machining conditions depending on materials and dimensions of the workpiece and the ...
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Optimized drilling of deep holes

Soviet Mining Science, 1966
R. M. Éigeles, R. V. Strekalova
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The effective control of a deep hole diamond drill

Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting, 2002
In the gold exploration drilling industry, time-dependent costs have become the major proportion of the total costs per meter drilled. Therefore, bit performance in terms of penetration rate and life has become extremely important. The author describes the application of a control system for controlling the parameters which determine the performance of
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