Friday, April 25, 2014

Thursday, April 17, 2014

Microbots in Manufacturing - Electronics Manufacturing

Wong-Foy’s robotic workers have already proved capable of building towers 30 centimeters long from carbon rods, and other platforms able to support a kilogram of weight. The robots can work with glass, metal, wood, and electronic components.

http://www.technologyreview.com/news/526601/microrobots-working-together-build-with-metal-glass-and-electronics/

Friday, April 4, 2014

Machine Tools for High Performance Machining - Norberto Lopez de Lacalle, Aitzol Lamikiz Mentxaka - Book Information



Machine tools are the main production factor for many industrial applications in many important sectors. Recent developments in new motion devices and numerical control have lead to considerable technological improvements in machine tools. The use of five-axis machining centers has also spread, resulting in reductions in set-up and lead times. As a consequence, feed rates, cutting speed and chip section increased, whilst accuracy and precision have improved as well. Additionally, new cutting tools have been developed, combining tough substrates, optimal geometries and wear resistant coatings. “Machine Tools for High Performance Machining” describes in depth several aspects of machine structures, machine elements and control, and application. The basics, models and functions of each aspect are explained by experts from both academia and industry. Postgraduates, researchers and end users will all find this book an essential reference.

Springer 2008

http://books.google.co.in/books?id=ORIsgY57mP8C

Adoption of High Speed Machining by TRW Automotive Canada


TRW Automotive Canada replaced EDM process with High Speed Machining in Die machining.

This change has certainly paid off for the company. It has seen dramatic increases in productivity.  The new process has halved the toolroom’s overall process time for die production. Moreover, it has trimmed the number of steps needed to manufacture tooling from nine to only six and significantly boosted labor efficiency.Compared to the old method, the company was  to produce more dies today with considerably fewer people.

2003 article

http://news.thomasnet.com/IMT/2003/10/08/auto_parts_make/

High Speed Machining



Now machining of aluminium can be done at cutting speeds of 3000 mt/min.

About High Speed Machining
http://www.cnccookbook.com/CCCNCMillFeedsSpeedsHighSpeedMachining.htm
Sandvik says spindle speed above 18,000 rpm is HSM


2010
Direct volumetric HSM of solid models
http://www.cnc-arena.com/de/virtualgibbs/blog/new-high-speed-machining-hsm-for-direct-volumetric-machining-of-solid-models--90.html

Comparing EDM with HSM 2001
http://www.interempresas.net/Plastics/Articles/15015-EDM-with-high-speed-machining.html

History of HSM - 1999
http://www.unimep.br/phpg/editora/revistaspdf/rct13art01.pdf

Applications

Aerospace components
http://www.spm-precisionmachining.com/high-speed-machining-complex-shapes-general-aviation.html




Economics

2013
The Real-World Economics Of High-Performance Drilling
http://www.mmsonline.com/articles/the-real-world-economics-of-high-performance-drilling

Economics of HSM - 2010 talk
http://www.blogtalkradio.com/highspeedmachining/2010/07/12/the-economics-of-high-speed-machining



High Speed Machines

Siemens Solutions
http://www.industry.usa.siemens.com/drives/us/en/cnc-for-machine-tool-solutions/cnc-applications/hs-machining-applications/pages/cnc-high-speed-machining.aspx

One measure of HSM is w/rpm less than 3.5W/rpm is HSM
Matrix 1000-1300 machine has 40 kW and 28,000 rpm   40,000/28,000  = HSM.
http://www.breton.it/machinetool/en/product/All/5-axis_high-speed_machining_centre_MATRIX_1000-1300

Saturday, March 8, 2014

Forged Crankshaft - Materials and Process


Crankshaft Machining Process - Balu Crankshafts
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Kobe Steel develops new forging method for built-up crankshafts used in ship engines - 2013
http://www.kobelco.co.jp/english/releases/2013/1188623_13522.html


A steel ingot is heated in an oven to about 2,200 degrees F amd is then placed in a forging die and squeezed into the approximate shape of the desired crank profile. This “squeezing” is performed either by a hammering or pressing process.

http://www.precisionenginetech.com/tech-explained/2009/06/02/forged-crankshaft-tech-part-1/
http://www.precisionenginetech.com/tech-explained/2009/06/02/forged-crankshaft-tech-part-2/

http://www.thyssenkrupp-forginggroup.com/language-gb/produkte/geschmiedete_kurbelwellen.htm

Corus steel for crankshafts
http://www.tatasteeleurope.com/file_source/StaticFiles/Business%20Units/Engineering%20steels/Automotive%20Components.pdf