Sharp SV-2412

[Larry B.]

Gentelmen,

I am currently deciding what Tool Room mill would be the best value. I am comparing the Sharp SV-2412 to the Haas TM-1. I have plenty of exposure to the Haas machines and there controller, but the Sharp seems to be a more rigid Machine Tool. My worries are the service and reliabilty of the Sharp Machine. Could anyone please give me your experiences and feedback on the machine and controller for the Sharp? It would be of great help in making this decision. Thanks in advance.

[JIMMYZ]

If you want a straight up comparison call bob at performancemachinetools.com, 27 years in the machine tool biz.

later
John

[maxine]

I am making the same comparison for a purchase I want to make before year's end. If you learn anything significant please post. I'll do the same. So far I have had a bit of trouble getting good info on the Sharp other than the fact that my local Haas dealer trashes them on both quality and service. But others tell me that here in the Pacific Northwest the Haas service is absolutely terrible. I will say that their (Selway's) sales response has been poor so that does make me wonder if I can't get a call back when I want to buy how much luck will I have when I need service after the sale.

[rickyt]

I have a Haas TM-2 and if I had to buy a new machine I would definitly look at the Sharp. My Haas is so slow, and it gets coolant all over the place. I can cut most materails, just have to be careful not to push it to hard. The Mazak dealer in my area also sell's Sharp. He has sold quite a few of the SV-2412's and he said they have been rock solid little machines. Fast smooth running machines, I use Mastercam X2 so I don't programming at the machine. If you don't have a cam program I would look at the Hurco VM-1, they have one of the best conversational controls in the industry.

[maxine]

Thx for the info. I checked out the Hurco VM1 at the local dealer and it does look really nice but it is just too expensive for my needs. I'm going to go check out the Sharp next week.

[timlkallam]

I Have a sharp 2412 its 2 years old and i have had no problems with it Very ridged machine .I looked at the hass mini mill and they wanted to charge me for every little option it just got silly they even wanted $400 for a plexiglass top.The hass came to about $40k with just basic options.I never could find out the true horsepower.Also the hass has very litte z travel
but a kurt vise under it and a jobbers lenth drill in it and you only have a few inchs of room under the vise.
You can get more z height but again thats an option.

I then looked at the sharp I thought a tiawain machine would be junk but I found they have come a long way.It comes with a fanuc control ridged tapping a coolant pump that puts out more than a garden hose and the machine even has a top.It has box ways 18 inchs of z and weights about 2000 lbs more than the hass. I paid $ 35k for the sharp .To me the desision was a no brainer.

[rickyt]

Man that's a nice looking little machine. What do you use to program it? I wish I could have gotten one of those insted of the Haas TM-2. My TM has 16" in y, and I have only needed that once.

[phyzzle]

Hi Timlkallam,
Nice pics of the Sharp in action! I nominate you for best action sequence of VMC stills seen today!
I was also getting serious about a Haas TM-1P, one of your pics (#5) is good evidence why you need the "P" for the Haas toolroom mills. I am now pretty intrigued about the Sharp--I notice that they spec 0.0002" accuracy/0.0001" repeatability, about twice as good as the Haas toolroom mills. Have you checked whether they can really meet those accuracy specs?
I am purchasing this machine for a job which requires machining a 7075 clevis part on each end of a tube, with up to 42-43" between opposite clevis eye centers, with about 0.002" tolerance on the eye-to-eye distance. We were planning to manually end-for-end the part after the first eye was milled, using an indexed tool that would allow the other end of the tube-clevis assembly to extend off the end of the table a bit, within the confines of the machine covers. With the 30" x-travel of the TM-1P, this appears reasonable. Any sense of whether you could do this operation with the 24" travel of the Sharp?

[timlkallam]

I question the accuracy the sharp states, its a boxway machine so there has to be some clearance in the ways.
I can put an indicater on my spindle and and push hard and move the head +-.0004 I don't know if this is normal or not .I could tighten up the gibs but if i tighten to much i could damage the ways. I can say it will repeat within .0002 cutting small alum. parts. I put an .0001 B&S indcator in the spindle to adjust the backlash after i was finished I wrote a program to move the table back and forth to see if the table would stop at the same place every time and it would repeat well under .0001 but cutting under a load my yeild different results. Position .0002 accuracy over the full travel I don't know. If you are looking mainly for accuracy .I think the hass would be more acurate because it has linear ways no clearance, no stick slip . As for the .002 tolarance for your part no problem, the sharp has hinged doors on the sides of the machine so your part can stick out. Whats a clevis do you have a picture?
Tim

[phyzzle]

Thanks for those tests, the repeatability at least sounds like it may be possible. Don't need such accuracy now, but its nice to know it may be possible. I am glod to hear those side doors allow parts to stick out--that helps a lot.

Here are some shots of some of the tongue and clevis joints we will be making (about 200 or so eventually) for our reflight of a NASA balloon payload next year, that is one of our near term tasks at hand for a VMC in our physics shop. We flew the payload (last pic--a set of radio horn antennas on a 25' high truss structure) early this year in Antarctica, but it got dragged a half-mile across the ice after it landed and every single part got damaged or tweaked. The whole truss structure has to be held to few-thousands tolerance on the individual tube+clevises, otherwise the errors build and it won't go together. The 7075 clevis parts are joined to thinwall 6061 tubing via a pulse-weld techniques (its something like a high-pressure cold swage joint--not a hotweld).

[timlkallam]

Ok i understand now .I would love to work on a project like that.

[phyzzle]

Tim,
Seriously, we are hiring a staff machinist/instrument builder over the next few months. The job is not properly posted yet but if you are interested there is a craigslist hawaii preliminary post on it. The project above is one of the first tasks for that position....