Friday, February 19, 2021

Deep Hole Drilling - Technology and Productivity News and Developments

https://www.ctemag.com/   



Drilling - Process and Machine - Evolution

2011 - 2020 Drilling Operation Elements - News and Information for Industrial Engineering

2000-2010 Drilling Operation Elements - News and Information for Industrial Engineering

1991-2000 Drilling Operation Elements - News and Information for Industrial Engineering




Automotive components requiring deep hole drilling: 

Rackbars, Pinion Shafts, Cylinder Head, Engine Blocks, Valve Guides, Transmission Shafts, Connecting Rod, Input Shaft, Output Shaft, Gear Shaft, Camshaft, Crankshaft, Rocker Arm Shaft, Crank Case, Shock Absorbers, Piston Pin, Pump Barrel, Common Rail, and Nozzle.


Automotive deep hole applications - Available Solutions

Cam Shaft Deep Hole Drilling Solution

Engine Connection Rod Deep Hole Drilling Solution

Engine Valve Deep Hole Drilling Solution

Engine Valve Guide Drilling Solutions - Valve Guide Gundrilling

Fuel Injection Parts Deep Hole Drilling Machine

Gear Shaft Deep Hole Drilling Solutions

Oil pump injectors gun drilling machine

https://www.deepholemachines.com/special-purpose-deephole-machines/automotive-deep-hole-applications

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https://www.youtube.com/watch?v=sN3F6W3J5Uc

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Deep hole drilling  - Fundamentals

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https://www.youtube.com/watch?v=1FmNqL_0dOE

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2021

https://www.americanmachinist.com/machining-cutting/media-gallery/21153554/customized-deephole-drilling-suhner-industrial-products

Search deep hole drilling - Interesting results


Widia TDMX indexable insert drilling line has been extended.

Deep hole drilling line extended

05.01.2021

1.5XD and 12XD drill bodies got added to the existing 3XD, 5XD and 8XD. 

The new 1.5XD addition will enhance the productivity, rigidity and stability when drilling shallow holes whereas the 12XD range will enable manufacturers to enjoy the benefit deep hole drilling. The TDMX drill body incorporates polished flutes, through coolant channels and margin lands on the entire body length to ensure straightness and increased hole quality.

2020

Going deep and cellular

Published December 8, 2020 

Deep-hole drilling systems, which can produce holes that exceed a 20-1 depth-to-diameter ratio, are a unique class of manufacturing equipment.

Unisig a multiple-spindle machine, the UNI25HD. It had the power and controls necessary to apply indexable gundrilling tools, significantly improving feed rates.

https://www.ctemag.com/news/articles/going-deep-and-cellular


BTA deep hole drilling machine

Patent
Publication of JP6746311B2: 2020-08-26

Drilling system and methods for deep hole drilling

Abstract

A deep hole drilling system and methods provide stability and cutting performance to produce deep holes having desired straightness. The system may include a replaceable cutting head provided with a center cutting member and first and second side cutting inserts. The tool provides a major diameter with the OD cutting margins on the replaceable side inserts, as well as possibly cutting margins on the center cutting member. Adjustment mechanisms are provided to adjust the center cutting member and/side cutting inserts.

2020-02-25: Publication of US10569347B2

Inventor: L Paul, W. Best, Salvatore D. Deluca, Lucas S. Dummermuth, David J. Carlisle, Current AssigneeL Allied Machine and Engineering Corp

https://patents.google.com/patent/US10569347B2/en



2018


Selection Of Deep Hole Drilling Parameters Under Cycle Time Requirement Based On Tool Wear Analysis And Life Estimation

Cong Liao, Haiyan Henry Zhang, and Yueen Li

Journal of Multidisciplinary Engineering Science and Technology (JMEST)

Vol. 5 Issue 10, October - 2018


Deep hole drilling process  investigated

9.9 mm diameter and 202 mm depth (the L/D ratio is more than 20). The tool is solid carbide twist drill bit coated with TiCrN and the workpiece is SAE1045.

Cutting parameters and conditions: 

SFM – 262(2570rpm), feed – 0.23mm/rev, 

coolant pressure – 725 psi, coolant concentration – 6~8%. 

Observed that the severe tool wear occurred at the periphery of the cutting edge in the early stage of  usage under the cutting condition of depth of 202 mm, diameter of 9.9mm, speed of 2570 rpm, and feed of 0.23 mm/rev. The surface speed at the outer spot of the cutting edge is estimated of 79.9 m/min.

Experiments reported

V (m/min)           f (mm/rev)                        tcycle (min) 

79.9                           0.23                              0.3149 

65.3                           0.27                              0.3563 

65.3                           0.225                            0.4276 

The paper gives the formula for calculating drilling time.

It also gives tool life formula for deep hole drilling in terms of cutting speed, feed and hole length.

2017

https://www.fabricatingandmetalworking.com/2017/12/deep-hole-drilling-of-diesel-engine-components-transmission-shafts-and-more/

2015

https://www.americanmachinist.com/machining-cutting/article/21898952/seven-axes-one-setup-for-deephole-drilling

https://www.americanmachinist.com/machining-cutting/media-gallery/21898953/automated-deephole-drilling-for-custom-shaft-production

2014


Going deep with holemaking

Christopher Tate

Published October 1, 2014


Uniform nomenclature for long/deep drills. Drill length is specified as a function of the diameter, it is common to see the drill length called out as 15D, 20D and so on. For example, 20D means the drill can produce a hole 20 diameters deep. Therefore, a ½ "-dia., 20D drill can produce a 10 "-deep hole.

2013

Effective Parameters For Improving Deep Hole Drilling Process By Conventional Method - A Review

L. Francis Xavier and D. Elangovan 


2008

Water-Cooled VW Performance Handbook: 3rd edition


Greg Raven, Chad Erickson

Motorbooks, 15-May-2011 - Transportation - 208 pages


Turn your VW into a high-performance machine. Chad Erickson explains everything from low-buck bolt-ons to CNC-machined mods. Learn how to choose, install, tune, and maintain performance equipment for Golfs, GTIs, Jettas, Passats, and more. This book will help improve your VW’s engine, transmission and clutch, ignition, carburetion/fuel injection, suspension and handling, brakes, body, and chassis. In its 3rd edition, Water-Cooled VW Performance Handbook is now updated to include new engines, body styles, and modifications for the 1986–2008 model years.

1999

Process for drilling oil-holes in crankshafts

Abstract

A process for drilling oil holes in a crankshaft at various positions lengthwise and widthwise about a longitudinal axis of the crankshaft, where the oil holes are perpendicular to and have angled directions with regards to the longitudinal axis. The process includes the sequential steps of placing the crankshaft in a horizontal position in a crankshaft holding unit and maintaining the crankshaft in a horizontal position through the drilling process. The holding unit is then rotated on a vertical axis until the crankshaft faces the drilling unit. The crankshaft is next rotated along the longitudinal axis of the crankshaft to position the crankshaft in a position for drilling a hole. The drill tool is then moved on a second and third axis until the drill tool is situated in order to drill the hole in the crankshaft.

Application US09/756,669 events 

1999-04-19

Priority to ES9900797

2002-11-26

Publication of US6485401B2

2019-07-23

Anticipated expiration

Status

Expired - Fee Related

https://patents.google.com/patent/US6485401B2/en


Updated 19 Feb 2021

Published on 15 Feb 2021



1 comment:

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