Tool life testing in gundrilling: an application of the group method of data handling (GMDH)

Astakhov, Viktor P.; Galitsky, V. V.

doi:10.1016/j.ijmachtools.2004.09.003

Cited by 34 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Astakhov and Galitsky studied tool life on malleable cast iron by using single-edge drill bits. The effect of different tool angles and feed rates was studied and optimized [ 11 ]. Bagci and Ozcelik studied the effect of depth, feed rate, and cutting speed on drilling temperature and thrust force in Al7075 by using TiN/TiAlN-coated carbide drills.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Effect of a Pre-Center Drill Hole and Tool Material on Thrust Force, Surface Roughness, and Cylindricity in the Drilling of Al7075

2018

View full text Add to dashboard Cite

Drilling is one of the most useful metal cutting processes and is used in various applications, such as aerospace, electronics, and automotive. In traditional drilling methods, the thrust force, torque, tolerance, and tribology (surface roughness) are related to the cutting condition and tool geometry. In this paper, the effects of a pre-center drill hole, tool material, and drilling strategy (including continuous and non-continuous feed) on thrust force, surface roughness, and dimensional accuracy (cylindricity) have been investigated. The results show that using pre-center drill holes leads to a reduction of the engagement force and an improvement in the surface quality and cylindricity. Non-continuous drilling reduces the average thrust force and cylindricity value, and High Speed Steels HSS-Mo (high steel speed + 5–8% Mo) reduces the maximum quantity of cutting forces. Moreover, cylindricity is directly related to cutting temperature and is improved by using a non-continuous drilling strategy.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation on the Effect of a Pre-Center Drill Hole and Tool Material on Thrust Force, Surface Roughness, and Cylindricity in the Drilling of Al7075

2018

View full text Add to dashboard Cite

show abstract

“…The GMDH approach is self-organizing and more straightforward in realizing its models. For details and comments concerning the disadvantages of the RA approach compared with the GMDH approach, see reference [25].…”

Section: Discussionmentioning

confidence: 99%

Modelling and predicting surface roughness in turning operations using hybrid differential evolution and the group method of data handling networks

Onwubolu

2008

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

This paper presents a hybrid modelling approach, based on the group method of data handling (GMDH) and the differential evolution (DE) population-based algorithm, for modelling and predicting surface roughness in turning operations. Turning operations have been performed on a mild steel workpiece with a high-speed steel (HSS) tool over a wide range of cutting conditions. The results of the hybrid DE-GMDH approach are compared with the results obtained by the standard GMDH algorithm and its variants. Three case studies were examined, from which it can be concluded that the DE-GMDH algorithm generalizes best (based on the EPI value) when the input variables include the cutting conditions of speed, feed, and depth of cut, as well as the feed force and cutting force. Results presented show that the proposed DE-GMDH algorithm appears to perform better than the standard GMDH algorithm and the polynomial neural network (PNN) model for the surface roughness problem. Consequently, such a self-organizing modelling approach is useful in both modelling and prediction in an advanced manufacturing system where it is necessary to model and predict the surface roughness during machining operations. Application of such heuristics can play a major role in reducing production costs.

show abstract

“…To deal with these numerous gundrill design variables, Astakhov and Galitsky used the group method of data handling [25] and obtained the following correlation equation for gundrill tool life: where v is the cutting speed (m/min), f is the feed (mm/rev), c pt1 and c pt2 are the shift distances of the outer and inner cutting edges, respectively (mm) (see Sect. 5.6.3).…”

Section: Example Of Experimental Studymentioning

confidence: 99%

Deep-hole Tools

2010

Springer Series in Advanced Manufacturing

View full text Add to dashboard Cite

This chapter discusses classification, geometry, and design of deep-hole drills. The concept of self-piloting is explained. The system approach to deep-hole machining is introduced and common system issues are discussed with examples. The major emphasis is placed on gundrills. A number of simple design rules are proposed and explained with examples. The conditions of free penetration of the drill into the hole being drilled are explained. The geometry consideration is systemically related to MWF flow and thus the concept of the optimum MWF flow rate is explained. A number of novel design concepts are revealed. This chapter also discusses system consideration in experimental study of gundrill parameters. It is demonstrated that tool life is a complex function not only of geometry parameters and machining regime alone but also of their combination. Tool geometry optimization using the Hooke and Jeeves method is also discussed.

show abstract

Tool life testing in gundrilling: an application of the group method of data handling (GMDH)

Cited by 34 publications

References 10 publications

Investigation on the Effect of a Pre-Center Drill Hole and Tool Material on Thrust Force, Surface Roughness, and Cylindricity in the Drilling of Al7075

Investigation on the Effect of a Pre-Center Drill Hole and Tool Material on Thrust Force, Surface Roughness, and Cylindricity in the Drilling of Al7075

Modelling and predicting surface roughness in turning operations using hybrid differential evolution and the group method of data handling networks

Deep-hole Tools

Contact Info

Product

Resources

About