Deep-Hole Machining Professional Info Center

HELP!!! Troubleshooting Guides Provided
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DHM Information

• Important reading for beginners -  drs. eng Peter Dingemans,  thesis on gundrilling - must read document
• Drilling and Drilling Operations
• Starting Bushing
• Productive deep-hole drilling
• Editor's Note
• Coolant Consideration for Gundrilling Aluminum
• A Summary of Methods Applied to Tool Condition Monitoring in Drilling
• Effect of Support Misalignment in Deep-Hole Drill Shafts on Hole Straightness
• Analysis and Prediction of Dynamic Disturbances of the BTA Deep Hole Drilling Process 
• Experimental Investigation of the Dynamics of the BTA Deep-Hole Drilling Process
• Statistics and Time Series Analysis of BTA Deep Hole Drilling
• The Investigation of the Machining Process of BTA Deep-Hole Drilling
• The Shaft Behavior of BTA Deep Hole Drilling Tool
• A Study on the Tool Eigenproperties of a BTA Deep-Hole Drill - Theory and Experiments
• A Review of Research Into the Role of Guide Pads in BTA Deep-Hole Machining
• A Information on BTA Deep-Hole Machining (German)
• Modeling of BTA drilling
• Effect of Supports Misalignments in Deep-hole Drilling Shafts on Hole Straightness
• Theoretical and Experimental Investigations on the Spinning BTA Deep-Hole Shafts Containing Fluids and Subject to Axial Forces
• Failure of Shanks
• Mechanical Modelling of High Speed Drilling
• Tool Condition Monitoring in Drilling Using Vibration Signature Analysis
• Drill Wandering Motion: Experiment and Analysis
• Wear Characteristics and Flank Wear Model of the Main Cutting Edges in Spade Drilling of Ductile Metals
• Mathematical Model of Multiflute Drill Point
• Specifying and Buying Tungsten Carbide. Brazing Tungsten Carbide - Process and Control
• Minimum lubrication in Al-Si drilling
• Development of Diamond Coated Tool
• Coatings
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Deep-Hole Machining Professional Info Center

Our Texts on Deep Hole Machining

• Instead of introduction: What does it mean "SELF-PILOTING?"
• Gundrilling Know-How
• A primer of gundrilling
• Gundrilling: System Outlook
• Coolants in Deep Hole Machining
• What stands behind the promotion of STS drills vs Gundrills?  The short answer is NOTHING.  This promotion is only counted on the technical illiteracy of end users
• Entrance Stability:  - Part 1
• Entrance Stability - Part 2
• Design of ejectors for deep-hole drills
• Cutting fluid flow in deep-hole drills
• Cutting force determination - Part 1
• Cutting force determination - Part 2
• Gundrill Point Grind or Why Baying and/or Using the Stepped-Slash Point Grind is Waste of Resources
• How to increase the penetration rate in gundrilling.
• Gundrill Geometry: Back to Basics.

WARNING! Copycats around!  Could you recognize the producer of this drill?  Clue: a major Japanese copycat company.  Has no clue in gundrilling design so it just combines different features without paying attention to their compatibility.  The result is seen from the wear pattern of the worn drills.  

 Could you recognize the producer of this drill?

Who is so genius to produce gundrills like that?  Answer  is a company which does not understand the basics of gundrill geometry and manufacturing.

Please do not use this point grind - it is technical nonsense.

Deep-Hole Machining Professional Info Center

Department 4: Advanced Level - Metal Cutting

• Metal cutting files including specialized papers
• Useful Links
• Useful Links2
• The assessment of cutting tool wear
• The assessment of plastic deformation in metal cutting
• Chip structure classification based on mechanism of its formation
• Re-evaluation of the basics mechanics of orthogonal metal cutting: velocity diagram, virtual work equation and upper-bound theorem
• A system concept in metal cutting
• A treatise on material characterization in the metal cutting process. Part 1: A novel approach and experimental verification
• A treatise on material characterization in the metal cutting process. Part 2: Cutting as the fracture of workpiece material
• A novel approach to operation force evaluation in high strain rate metal-deforming technological processes
• An analytical evaluation of the cutting forces in orthogonal cutting using a dynamic model of shear zone with parallel boundaries
• Correlations amongst process parameters in metal cutting and their use for establishing optimum cutting speed

Deep-Hole Machining Professional Info Center