Tormach on the web @ www.tormach.com Overview This video reviews carbide spot drilling and HSS drilling in cast iron. Material: 1.5" cast iron Cutters: Carbide Spot Drill, HSS End Mill Speed: 1000 RPM, 900 RPM Feed: 1.7 IPM, 2 IPM Machine: Tormach PCNC 1100 Background: Traditional twist drill bits may tend to wander when started on an unprepared surface. Once a bit wanders offcourse it is difficult to bring it back on center. A technique called spot drilling, in which the center of a hole is started, frequently provides a starting point for the traditional twist drill. Fixtures & Tooling: The tool used in the first part of the movie was an insert carbide spot drill. In this case, we decided to use a spot drill to insure that the second tool we use does not wander off the drill mark. We used drill cycle G73 with a feed rate of 1.7 inches per minute. The tool used in the second part of the movie was a traditional high speed drill bit with titanium coating(letter drill B). It was run at the slow speed of 56 surface feet per minute. This allows the bit to remain cool and last longer. We used drill cycle G73 with a feed rate of 2 inches per minute. Cutting Process & Results: Cast iron is a very easy material to cut, but it creates a lot of dust. It is important to have a vacuum handy to clean up the dust during the cutting process. Application Note Link: www.tormach.com Key Words: cast iron, spot drilling, HSS end mill, carbide spot drill, machining, milling techniques, CNC ...
Sunday, 17 February 2013
Drilling Cast Iron - Tormach CNC
Drilling Cast Iron - Tormach CNC Tube. Duration : 3.72 Mins.
Tormach on the web @ www.tormach.com Overview This video reviews carbide spot drilling and HSS drilling in cast iron. Material: 1.5" cast iron Cutters: Carbide Spot Drill, HSS End Mill Speed: 1000 RPM, 900 RPM Feed: 1.7 IPM, 2 IPM Machine: Tormach PCNC 1100 Background: Traditional twist drill bits may tend to wander when started on an unprepared surface. Once a bit wanders offcourse it is difficult to bring it back on center. A technique called spot drilling, in which the center of a hole is started, frequently provides a starting point for the traditional twist drill. Fixtures & Tooling: The tool used in the first part of the movie was an insert carbide spot drill. In this case, we decided to use a spot drill to insure that the second tool we use does not wander off the drill mark. We used drill cycle G73 with a feed rate of 1.7 inches per minute. The tool used in the second part of the movie was a traditional high speed drill bit with titanium coating(letter drill B). It was run at the slow speed of 56 surface feet per minute. This allows the bit to remain cool and last longer. We used drill cycle G73 with a feed rate of 2 inches per minute. Cutting Process & Results: Cast iron is a very easy material to cut, but it creates a lot of dust. It is important to have a vacuum handy to clean up the dust during the cutting process. Application Note Link: www.tormach.com Key Words: cast iron, spot drilling, HSS end mill, carbide spot drill, machining, milling techniques, CNC ...
Tormach on the web @ www.tormach.com Overview This video reviews carbide spot drilling and HSS drilling in cast iron. Material: 1.5" cast iron Cutters: Carbide Spot Drill, HSS End Mill Speed: 1000 RPM, 900 RPM Feed: 1.7 IPM, 2 IPM Machine: Tormach PCNC 1100 Background: Traditional twist drill bits may tend to wander when started on an unprepared surface. Once a bit wanders offcourse it is difficult to bring it back on center. A technique called spot drilling, in which the center of a hole is started, frequently provides a starting point for the traditional twist drill. Fixtures & Tooling: The tool used in the first part of the movie was an insert carbide spot drill. In this case, we decided to use a spot drill to insure that the second tool we use does not wander off the drill mark. We used drill cycle G73 with a feed rate of 1.7 inches per minute. The tool used in the second part of the movie was a traditional high speed drill bit with titanium coating(letter drill B). It was run at the slow speed of 56 surface feet per minute. This allows the bit to remain cool and last longer. We used drill cycle G73 with a feed rate of 2 inches per minute. Cutting Process & Results: Cast iron is a very easy material to cut, but it creates a lot of dust. It is important to have a vacuum handy to clean up the dust during the cutting process. Application Note Link: www.tormach.com Key Words: cast iron, spot drilling, HSS end mill, carbide spot drill, machining, milling techniques, CNC ...
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