Wednesday, January 22, 2020

Cylindrical Grinding Machine - Development - History



Cylindrical grinding is defined as having four essential actions:

The work (object) must be constantly rotating
The grinding wheel must be constantly rotating
The grinding wheel is fed towards and away from the work
Either the work or the grinding wheel is traversed with respect to the other.





 The basis for the modern day cylindrical grinder:   Jonathan Bridges and James Wheaton  are closely tied to the first historical appearance of the modern day tool in the 1830s. It took another 40 years before further improvement and refinement of the tool occurred.

The Brown & Sharpe company in Providence, RI.  It was this desire that led to their experimentation with building a cylindrical grinder. The first attempt was simply a small lathe with a grinding wheel mounted to it. Subsequent attempts led to the cylindrical grinder displayed at the 1876 Centennial Exposition and the subsequent patent.

A man in Waltham, Massachusetts, Ambrose Webster had created a small grinding machine in 1860 that contained all of the improvements Brown & Sharpe claimed to be their own original invention. The emphasis on precision, accuracy, and reliability was championed by Charles Norton. Norton was an employee of Brown & Sharpe who quit the company with the desire to further pursue his belief that the cylindrical grinder is not merely a finishing tool but could be a staple of the machine shop. He founded the Norton Grinding Company, where he continued improving the cylindrical grinder to use faster rpm values and more precise grinding tolerances. On April 18, 1925,  when was awared  The John Scott Medal and Premium for his invention of "accurate grinding devices of high power". These standards developed by Norton were the status quo until about the middle of the 20th century.

 The innovation of the last 70 years can be characterized by three waves of change. The first wave was the creation of numerical control.  The second wave of innovation, occurring during the 1970s and 1980s, is marked by the massive demand for microcomputers to be used to direct NC. The joining of computers marked the birth of Computer Numerical Control which once again revolutionized the ability of the cylindrical grinder. Now the machine was able to receive instruction from a computer which would give it precise directions on every imaginable dimension and measurement needed to produce the desired product. This was a completely different work environment in comparison to mid-century production where a worker had to direct the machine at every point on how to manipulate the work. The third wave of change came in the 1990s with the advent of the Personal Computer. Integrating CNC and the PC into one dynamic system allowed for even further control of the manufacturing process that required little to no human supervision.
https://en.wikipedia.org/wiki/Cylindrical_grinder


FABRICATION OF CYLINDRICAL GRINDING
ATTACHMENT ON LATHE MACHINE AND
OPTIMIZATION OF GRINDING PARAMETERS BY
REGRESSION ANALYSIS
Devarakonda Harish Kumar1*
Int. J. Mech. Eng. & Rob. Res, Vol. 4, No. 1, January 2015
http://www.ijmerr.com/v4n1/ijmerr_v4n1_57.pdf


CNC systems for more productivity
To increase surface quality and throughput on grinding applications it is important that your CNC supports features designed to get the best out of your machining processes. Whether you are employing cylindrical grinding to improve the surfaces on turned workpieces, flat grinding to create shapes and surfaces or 5 axis grinding to make tools, maximising productivity and getting the best results from your CNC machine is also a lot easier with the help of a dedicated partner.


1920 AGATHON GETS THE PATENT FOR ITS REVOLUTIONARY CLAMPING SYSTEM THAT WOULD OUTLAST NUMEROUS GENERATIONS OF TOOL GRINDING MACHINES.
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WHETHER WITH SIMPLE MECHANICS, REVOLUTIONARY AUTOMATION OR PIONEERING INDUSTRIAL 4.0 SUPPORT – AGATHON GRINDING MACHINES SET NEW QUALITY STANDARDS AT ALL TIMES.

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