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metalchips: April 2009
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Sunday, April 19, 2009. More Notes From Virtual Machine Shop. Notes on Machinery’s Handbook. Source: Virtual Machine Shop. Introduction to the Machinery’s Handbook. The Machinery’s Handbook is necessary in any machinist’s toolbox to be referred to on a regular basis. Here is an example of manufacturing a part and the use of the handbook during the machining process. Look at this blueprint. The chose of a cutting tool a coated carbide cutter would be more suitable. Cutting Speeds and Feeds. The material i...
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metalchips: March 2010
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Thursday, March 11, 2010. Chapter Seven, Cutting Tools. Part One of Notes taken while studying Chapter Seven of Machine Shop Basics visit them at www.aubelbooks.com. All machine tool operators need to have a basic knowledge of the cutting action of cutting tools. Action of Cutting Tools. Here are some materials used for making cutting tools. Carbon Tool Steel: Less expensive as other cutting tools, and can be used on some types of metal successfully. Tungsten Carbide: These cutting tools for machining ca...
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metalchips: February 2009
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Sunday, February 22, 2009. CNC Notes, Introduction to CNC code. Introduction to CNC Code. With Computer Numerical Control (CNC) a machine controller manages the operation of the machine. This includes table motions, spindle speeds, tool changes, and other machining functions. A program written in NC code is how these functions are accomplished. The coded instructions use letters, numbers and symbols ( ,-,/…. and so on). To create a program. Here are the nine character types used in CNC programming. A ser...
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metalchips: More Notes From Virtual Machine Shop
http://metalchips.blogspot.com/2009/04/more-notes-from-virtual-machine-shop.html
Sunday, April 19, 2009. More Notes From Virtual Machine Shop. Notes on Machinery’s Handbook. Source: Virtual Machine Shop. Introduction to the Machinery’s Handbook. The Machinery’s Handbook is necessary in any machinist’s toolbox to be referred to on a regular basis. Here is an example of manufacturing a part and the use of the handbook during the machining process. Look at this blueprint. The chose of a cutting tool a coated carbide cutter would be more suitable. Cutting Speeds and Feeds. The material i...
metalchips.blogspot.com
metalchips: Chapter Seven, Cutting Tools
http://metalchips.blogspot.com/2010/03/chapter-seven-cutting-tools.html
Thursday, March 11, 2010. Chapter Seven, Cutting Tools. Part One of Notes taken while studying Chapter Seven of Machine Shop Basics visit them at www.aubelbooks.com. All machine tool operators need to have a basic knowledge of the cutting action of cutting tools. Action of Cutting Tools. Here are some materials used for making cutting tools. Carbon Tool Steel: Less expensive as other cutting tools, and can be used on some types of metal successfully. Tungsten Carbide: These cutting tools for machining ca...
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metalchips: November 2008
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Saturday, November 15, 2008. I have been reading other material as well, these notes are from the U.S. Army Machining Course at http:/ opensourcemachine.org/us-army-courses. NOTES FROM US ARMY MACHINE COURSES. FUNDAMENTALS OF MACHINE TOOLS. INTRODUCTION TO THE MACHINE SHOP. Work in a machine shop includes all cold-metal work by an operator using hand tools or power tools for the removal of material to a specified shape or form. This does not include sheet metal work or coppersmithing. TRAMMEL: When circl...
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metalchips: June 2009
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Wednesday, June 24, 2009. Notes made while reading Audel‘s Machine Shop Basics visit them at www.audelbooks.com. Grinding is relativity a new art with most of the development having taken place since the 1890’s. The definition of an abrasive is a substance (i.e. sandpaper, emery) used for grinding polishing etc. Before this, the only abrasives were prepared from sandstone. Because of harder metals and alloys, abrasives that are more efficient were needed. Use of Abrasives in Grinding Wheels. Grinding is ...
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metalchips: December 2008
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Monday, December 22, 2008. More notes from Chp3 of MachineShop Basics. This posting is about nonferrous metals used in the Metalworking Industry. These are metals other than iron, important nonferrous metals are. At ordinary temperatures zinc is brittle; it becomes ductile and malleable at temperatures between 212 and 300 degrees Fahrenheit, then brittle again at 410 degrees Fahrenheit. Some of the uses of zinc are. O coating water pipes. Is a unique metal in that its specific gravity decreases under pre...
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metalchips: Abrasives
http://metalchips.blogspot.com/2009/06/abrasives.html
Wednesday, June 24, 2009. Notes made while reading Audel‘s Machine Shop Basics visit them at www.audelbooks.com. Grinding is relativity a new art with most of the development having taken place since the 1890’s. The definition of an abrasive is a substance (i.e. sandpaper, emery) used for grinding polishing etc. Before this, the only abrasives were prepared from sandstone. Because of harder metals and alloys, abrasives that are more efficient were needed. Use of Abrasives in Grinding Wheels. Grinding is ...
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metalchips: January 2009
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Saturday, January 17, 2009. More on Cnc and G-codes. CNC CONTROL-OPEN AND CLOSED. Motor drive controls the position and velocity of the machine axes in a CNC system, with each axis being driven separately, and follows the command signal generated by the NC control. The open-loop and closed-loop systems is how the servo drives are activated. CNC Control-: Open and Closed. Open Loop –. There is a draw back to the open-loop system primarily being there is no feedback system to determine if the program posit...