I had a need to build a prototype of a small part. I'm not a machinist, and youtube was a great resource for my research on milling concepts and considerations when using a drill press for this purpose. I believe this piece turned out pretty good for a first attempt. The operation pictured here is a reverse relief of 1/8" to match an existing part on which the new piece will be mounted. I completed a second operation to add a 45 degree chamfer at the line being cut in this video.The piece will be finished on a lathe to give it a 1 5/8" diameter adjacent to the surface shown, with a thickness of 1/2", and a front side diameter of 1". I used a carbide end mill made in the USA, having 8 flutes, running at 800 rpm. I began the milling operation after having made a 3/16" deep divot with a 1/2" drill bit, so I avoided making a plunge cut with the end mill. Feed rate was manually controlled through the cross slide vise, and much slower than would have been possible with a genuine milling machine. The vise used is the Palmgren #30301, which is made in the USA. The vise's movement of the workpiece was accurate and smooth, resulting from the fine precision of the vise's ways. The drill press is midway between a bench model and a floor model, standing 42" from base to top, with a 1/2 hp motor and a JT-3# chuck.
Thursday, 24 January 2013
Milling small parts using a drill press 1 of 2
Milling small parts using a drill press 1 of 2 Video Clips. Duration : 6.07 Mins.
I had a need to build a prototype of a small part. I'm not a machinist, and youtube was a great resource for my research on milling concepts and considerations when using a drill press for this purpose. I believe this piece turned out pretty good for a first attempt. The operation pictured here is a reverse relief of 1/8" to match an existing part on which the new piece will be mounted. I completed a second operation to add a 45 degree chamfer at the line being cut in this video.The piece will be finished on a lathe to give it a 1 5/8" diameter adjacent to the surface shown, with a thickness of 1/2", and a front side diameter of 1". I used a carbide end mill made in the USA, having 8 flutes, running at 800 rpm. I began the milling operation after having made a 3/16" deep divot with a 1/2" drill bit, so I avoided making a plunge cut with the end mill. Feed rate was manually controlled through the cross slide vise, and much slower than would have been possible with a genuine milling machine. The vise used is the Palmgren #30301, which is made in the USA. The vise's movement of the workpiece was accurate and smooth, resulting from the fine precision of the vise's ways. The drill press is midway between a bench model and a floor model, standing 42" from base to top, with a 1/2 hp motor and a JT-3# chuck.
I had a need to build a prototype of a small part. I'm not a machinist, and youtube was a great resource for my research on milling concepts and considerations when using a drill press for this purpose. I believe this piece turned out pretty good for a first attempt. The operation pictured here is a reverse relief of 1/8" to match an existing part on which the new piece will be mounted. I completed a second operation to add a 45 degree chamfer at the line being cut in this video.The piece will be finished on a lathe to give it a 1 5/8" diameter adjacent to the surface shown, with a thickness of 1/2", and a front side diameter of 1". I used a carbide end mill made in the USA, having 8 flutes, running at 800 rpm. I began the milling operation after having made a 3/16" deep divot with a 1/2" drill bit, so I avoided making a plunge cut with the end mill. Feed rate was manually controlled through the cross slide vise, and much slower than would have been possible with a genuine milling machine. The vise used is the Palmgren #30301, which is made in the USA. The vise's movement of the workpiece was accurate and smooth, resulting from the fine precision of the vise's ways. The drill press is midway between a bench model and a floor model, standing 42" from base to top, with a 1/2 hp motor and a JT-3# chuck.
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