3201Re: [mlathemods] Re: Flat or raked part off tools?
- Jul 6, 2010This is true to a certain limited extent. The major factor that makes the "T" style blade so Superior in performance is the heavy side reliefs that reduce drag to almost nothing on the flanks of the tool. This is what both allows it to be used straight in without any rake at all and provide 10 to 20 times the tool life between sharpening that it delivers. From my own experience a HSS "T" style parting blade will outlast 5 to 6 carbide insert parting tools in service and it can be resharppened hundreds of times when the insert is one use and out. Using this style tool in all of our CNC and screw machines at work allowed us to lower our part costs for competitive bidding most of the time enough to get our shop work at prices lower than our competitors could afford. This style blade because it cuts leaner and cooler also cuts straighter allowing in many cases not having to dress this cut in a secondary operation.Between this style parting tool and using cheap brazed cutters sharpened my way we were constantly able to undercut the majority of our competitors in order to keep our shop busy!
Long Beach, CA
--- On Tue, 7/6/10, David Halfpenny gmail <davidhalfpenny@...> wrote:
From: David Halfpenny gmail <davidhalfpenny@...>
Subject: Re: [mlathemods] Re: Flat or raked part off tools?
Date: Tuesday, July 6, 2010, 7:44 AMPart of the effectiveness of the Tee blade shown in that advertisement is the hollow ground top.This curls the chip along its length to make it narrower than the cut so it comes out easily without rubbing or jamming.One can also Dremel a groove onto the top of the tip of a Vee blade to gain this part of the advantage.David 1/2dFrom: James W. EarlySent: Tuesday, July 06, 2010 3:37 PMSubject: RE: [mlathemods] Re: Flat or raked part off tools?This is a link to the Enco page. These blades are an industry standard item available from all commercial suppliers for knowledgeable machinist. They also carry the brazed carbide and wedge style blades that they make more profit on for the use of the undereducated.
Long Beach, CA
--- On Tue, 7/6/10, David Lee <nhengineer@...> wrote:
From: David Lee <nhengineer@...>
Subject: RE: [mlathemods] Re: Flat or raked part off tools?
Date: Tuesday, July 6, 2010, 7:02 AM
Maybe someone would be so kind as to provide this uninformed novice [me] with a link to a photo of a “T” type parting tool.
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