Mickey_D
Stainless
- Joined
- Apr 18, 2006
- Location
- Austin, TX
We had a major crash on our fairly new (under a year old) Brother S500X1. The machine was doing a light facing operation with a Mitsubishi 2" 45 degree ASX 4 flute face mill - 10,000 rpm, .025 DOC, 150 IPM, on a 1.48" x 2.48" 6061 part. We had run about 10 parts on this run (300 plus with the same program and tools last month and over 12,000 over the last five years on at least 5 different machines - so not a new part), everything sounded fine, finish was great, and then BOOM! The machine made a bang and grinding noise for about a second before erroring out. Jogged the spindle up and noticed that the facemill was laying on top of the part with an insert stuck into the part (still clamped into the vise). I then noticed that the pull stud was broken at the base, looked for it in the machine and could not find it and did not until I looked into the spindle and noticed that it was still clamped into the spindle. The inside spindle was trashed at the spindle mouth and at the top of the taper where it spun on the tool.
Called Yamazen to get service scheduled (this was Tuesday afternoon and they got a spindle shipped in and a service guy down and had it up by Thursday evening) so many kudos to them for prompt service. I then called Maritool support and told them that one of their 30 taper (not coolant through) studs (not more than 6 months old) failed and ate my spindle, tool holder, and facemill and that it looked like a possible problem with either material or heat treat process and they should trace the studs from our order and check any that they had. The response that I got was "they can break" and if I wanted to I could send the broken one back and they would inspect it. I have bought a lot of stuff from them over the years and have been happy but I am not now. Yamazen has gotten more aggressive on stud pricing so we are going to switch to their studs from now on - I don't like surprises.
Called Yamazen to get service scheduled (this was Tuesday afternoon and they got a spindle shipped in and a service guy down and had it up by Thursday evening) so many kudos to them for prompt service. I then called Maritool support and told them that one of their 30 taper (not coolant through) studs (not more than 6 months old) failed and ate my spindle, tool holder, and facemill and that it looked like a possible problem with either material or heat treat process and they should trace the studs from our order and check any that they had. The response that I got was "they can break" and if I wanted to I could send the broken one back and they would inspect it. I have bought a lot of stuff from them over the years and have been happy but I am not now. Yamazen has gotten more aggressive on stud pricing so we are going to switch to their studs from now on - I don't like surprises.