A Role of the Resultant Cutting Force in Deep-Hole Drilling

Mapping Intimacies ◽

10.1115/imece1999-0678 ◽

1999 ◽

Author(s):

V. N. Latinovic ◽

V. P. Astakhov ◽

M. O. M. Osman

Keyword(s):

Cutting Force ◽

Static Stability ◽

Optimal Location ◽

Design Criterion ◽

Hole Drilling ◽

Deep Hole ◽

Force Vector ◽

Force System ◽

Deep Hole Drilling

Abstract This paper present results of the analysis of a tool static stability in deep-hole drilling. The analysis has been carried out to determine the optimal location of the drill guide pads relative to the drill’s cutters (based upon criteria of equal total pad reactions and equal stability indicators). It is demonstrated that the optimal location can be achieved under asymmetrical location of the supporting pads relative to the direction of the resultant cutting force in a plane perpendicular to the drill axis. By consideration of the drill static force system in the plane which contains the drill axis and the resultant cutting force vector, a new design criterion is proposed. The essence of this concept is to design the deep-hole drills with minimum rubbing and wear of the guide pads and provide for the tool self-piloting.

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Role of gas environment in the process of deep-hole drilling by ultrashort laser pulses

10.1117/12.486540 ◽

2003 ◽

Cited By ~ 8

Author(s):

Sergei M. Klimentov ◽

Taras V. Kononenko ◽

P. A. Pivovarov ◽

Serge V. Garnov ◽

Vitali I. Konov ◽

...

Keyword(s):

Laser Pulses ◽

Ultrashort Laser Pulses ◽

Hole Drilling ◽

Deep Hole ◽

Deep Hole Drilling ◽

Gas Environment ◽

Ultrashort Laser

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Modelling Complex Force Systems, Part 1: The Cutting and Pad Forces in Deep Drilling

Journal of Engineering for Industry ◽

10.1115/1.2901647 ◽

1993 ◽

Vol 115 (2) ◽

pp. 169-176 ◽

Cited By ~ 23

Author(s):

B. J. Griffiths

Keyword(s):

Cutting Forces ◽

Cutting Edge ◽

Hole Drilling ◽

Deep Hole ◽

Deep Drilling ◽

Force System ◽

Friction Forces ◽

Deep Hole Drilling ◽

Drilling Operation ◽

Force Systems

This paper is the first part of a two-part series which analyzes the complex force system existing within a deep hole drilling operation where cutting forces exist at a single cutting edge and burnishing and friction forces exist at two pads. In this first paper the forces at the pads and cutting edge are determined by (1) assuming that the pad forces are related by coefficients and (2) by the use of complimentary dynamometers.

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Geometric Parameter Optimization in Cutting Force Model for Deep-Hole Drilling

Volume 2: Processing ◽

10.1115/msec2014-4221 ◽

2014 ◽

Cited By ~ 1

Author(s):

Yueen Li ◽

Haiyan H. Zhang ◽

Cong Liao

Keyword(s):

Tool Wear ◽

Cutting Force ◽

Analytical Model ◽

Operating Conditions ◽

Geometric Parameters ◽

Hole Drilling ◽

Tool Geometry ◽

Deep Hole ◽

Deep Hole Drilling ◽

Force Modeling

The tool wear is one of common failure modes under the higher speed operating conditions in the deep-hole drilling. Since the tool wear is directly related to the tool geometry and the cutting forces, it is reasonable to utilize the cutting force modeling to optimize the tool geometric parameters. Two typical modeling methods were utilized for the cutting force modeling of drilling processes: empirical model and geometric analytical model. Since the value and distribution of cutting force are influenced by the tool geometry, the optimization of the geometric parameters is deduced in the geometric analytical model of the deep-hole drilling processes in this paper. As a result, a tool design was derived based on the optimization of these geometric parameters.

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Multi-Sensor Data Fusioning of Monitoring Deep-Hole Drill Bit

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.718-720.1165 ◽

2013 ◽

Vol 718-720 ◽

pp. 1165-1169

Author(s):

Xu Song Xu ◽

Zhi Ying Sun

Keyword(s):

Data Fusion ◽

Cutting Force ◽

Domain Analysis ◽

Sensor Data ◽

Hole Drilling ◽

Drill Bit ◽

Deep Hole ◽

Deep Hole Drilling ◽

Sensor Data Fusion ◽

Multi Sensor Data Fusion

For the deep-hole drilling bit works in closed or half-closed condition and the cutting situation can not be observed and controlled directly, it brings a big challenge to monitor the cutting tools and the cutting process. To solve the problem, improved testing methods and data processing techniques were developed. A new condition monitoring method of deep-hole drilling based on multi-sensor data fusion was discussed in the paper. The signals of vibration and cutting force were collected when the condition of deep-hole drilling on stainless steel was normal and abnormal. Four eigenvectors were extracted on time-domain analysis and frequency-domain analysis of the signals. Then the combined four eigenvectors were sent to BP neural networks data fusioning center. The fusioning results indicate that cutting force signal can reflect the condition of drill bit better than vibration signal and multi-sensor data fusion is superior to single-sensor.

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Based on the drilling operation of different drilling RIGS, the technical conditions of deep hole drilling in soft surrounding rock are discussed

Advance in Civil Engineering ◽

10.35534/ace.0202009c ◽

2020 ◽

Vol 2 (2) ◽

pp. 46-51

Author(s):

Liu Mingyu

Keyword(s):

Surrounding Rock ◽

Hole Drilling ◽

Deep Hole ◽

Deep Hole Drilling ◽

Drilling Operation ◽

Drilling Rigs

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Deep Hole Drilling Technique (DHD)

JOURNAL OF THE JAPAN WELDING SOCIETY ◽

10.2207/jjws.88.485 ◽

2019 ◽

Vol 88 (6) ◽

pp. 485-488

Author(s):

Shinji KAWAI ◽

Takuya NAGAI ◽

Shigetaka OKANO

Keyword(s):

Hole Drilling ◽

Deep Hole ◽

Deep Hole Drilling ◽

Drilling Technique

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Temperature monitoring in the subsurface during single lip deep hole drilling

tm - Technisches Messen ◽

10.1515/teme-2020-0055 ◽

2020 ◽

Vol 87 (12) ◽

pp. 757-767

Author(s):

Robert Wegert ◽

Vinzenz Guski ◽

Hans-Christian Möhring ◽

Siegfried Schmauder

Keyword(s):

Cutting Parameters ◽

Drill Hole ◽

Machining Process ◽

Hole Drilling ◽

Drilling Process ◽

Deep Hole ◽

Machining Processes ◽

Deep Hole Drilling ◽

Feed Force ◽

Cutting Zone

AbstractThe surface quality and the subsurface properties such as hardness, residual stresses and grain size of a drill hole are dependent on the cutting parameters of the single lip deep hole drilling process and therefore on the thermomechanical as-is state in the cutting zone and in the contact zone between the guide pads and the drill hole surface. In this contribution, the main objectives are the in-process measurement of the thermal as-is state in the subsurface of a drilling hole by means of thermocouples as well as the feed force and drilling torque evaluation. FE simulation results to verify the investigations and to predict the thermomechanical conditions in the cutting zone are presented as well. The work is part of an interdisciplinary research project in the framework of the priority program “Surface Conditioning in Machining Processes” (SPP 2086) of the German Research Foundation (DFG).This contribution provides an overview of the effects of cutting parameters, cooling lubrication and including wear on the thermal conditions in the subsurface and mechanical loads during this machining process. At first, a test set up for the in-process temperature measurement will be presented with the execution as well as the analysis of the resulting temperature, feed force and drilling torque during drilling a 42CrMo4 steel. Furthermore, the results of process simulations and the validation of this applied FE approach with measured quantities are presented.

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