Parlec Twin Bore Roughing Heads

[Eric@HorsepowerInc.]

Looking for some input on these boring heads from the Guru's. We have some production parts I would like to implement these on and looking for some feedback from any users. We have 8,000 + hole's to do roughly 1.75dia x2.25 dp. , I also looked into Big kaiser brand, but the tech was out on demo days, and the parlec brand if far cheaper. Just wondering if the tool is good quality and able to be balanced to run at high speeds. The parts are Die cast Aluminum.

[mkd]

i've used Criterion to good effect.

[robk]

We have a few different brands here (Urma, Big Kaiser).

One of the latest projects I was working on uses Kennametal with excellent results. Sorry, but I never used the Parlec brand so I have no opinion.

http://www.kennameta...x=mode matchall

[EX-wccprogrammer]

If this is for roughing, why a twin bore? You have to pre-drill for them, so you are entering each hole twice. My weapon of choice would be:

 

http://www.ktoolinc.com/k-tool_doc_156.htm

 

In aluminum, this could run at 3800 rpm, 23 ipm. Which means about 6 seconds per hole.

[Eric@HorsepowerInc.]

Ex-wccprogrammer these are die cast in holes with about .025 stock for finishing. The bores have some intrupted cut areas with cross holes and slots. Robk, I didn't realize Kennametal made a twin bore, we are mainly a Iscar user. The iscar though is a custom, which means a long lead time and I'm sure expensive, being these parts are already in house, I need something asap. I will look into the Kennametal and criterion heads, I do appreciate the feed back, please keep it coming as I need to make a decision early next week on a product choice.

[EX-wccprogrammer]

The K-Drill will perform the same way under interrupted cut.

 

As for twin bores, I have used Big Kaiser and DeAndrea. If I need performance under tough conditions, Big Kaiser is the clear winner. In your situation, I think brand is a secondary issue, any of them would perform at a satisfactory level.

 

Just for a FYI, the Big Kaiser twin bore would run 2950 rpm at 41.3 ipm. That would be about 3.3 seconds per hole.

[robk]

+1^^

Those K-Tool flat bottom drills are the cats a$$. Interruptions mean nothing to them.

[Eric@HorsepowerInc.]

I will look into the K-tool as well. 3.3 sec. per hole, now were talking We are currently milling these, and that would be a 1000 fold increase in productivity. Thanks guys, Have a good weekend.