This GMN Spindle is an tool and cutter grinder and runs at 10,000 rpm. This is one the smaller spindles I’ve seen in the shop since last February when I started here. This spindle has a special face to taper contact similar to the BigPlus taper which helps prevent tool chatter. I was able to snap some shots of Denton setting up the spindle on the test stand and running it up:
Mori Seiki SH500 BIG PLUS
Mori Seiki NV5000
Mazak 10800 BIG PLUS PLUS
BIG PLUS 50 taper had run out and only 25% contact. Rear housing out of ISO spec.
- We ground plate ground the taper to BIG PLUS specifications and ground plate ground the rear housing. We were able to get 95% taper contact and 95% face contact. Final QC with certified BIG PLUS tooling showed less than 3 microns run out at the end of a 12″ test bar that repeated for over 20 tool changes.
Mori Seiki SH403
Matsuura HPLUS 300
Matsuura ES450H with BIG PLUS
This customer runs their Matsuura ES450H spindles at maximum rpm with the maximum feed rates possible. They know that this will reduce the spindle life but when taking the increased part output into consideration the process was deemed cost effective. As the repair costs from the OEM increased the profitability was questioned. When Northland Tool made our proposal we were able to reduce their repair costs per spindle by 50%. Our customer has also informed us that the Northland Tool repairs are lasting at least 50% longer than the OEM repairs. The customer is also saving on removal and installation costs as Northland Tool allows them to perform the removal and installation themselves and still provides a 1 year warranty. The machine distributor mandates they pay them to remove and install all the spindles or they will not provide a warranty. Visit Our Matsuura Page Here
Identifying a BIG PLUS Spindle
We are often asked to identify if our customers spindles are capable of using BIG PLUS tooling. Most manufacturers place labels on their machines with the BIG PLUS logo if the spindle is made for BIG PLUS. Unfortunately spindles are exchanged, repaired by spindle repair companies who do not rebuild them to BIG PLUS specifications, on site taper grinds are performed and several other factors can cause a spindle to not be fully capable of giving you all the advantages of the BIG PLUS tooling.
Northland Tool & Electronics will check your spindles with our factory supplied test tooling to make sure you are getting maximum performance from your BIG PLUS interface and spindle. We can also perform these tests in your facility and give you a report on your spindle condition as well as run out repeatability. We can customize our program to identify many aspects of your spindle performance that may effect your part quality.
Let us help you make sure you get the optimum performance from your spindles.
BIG PLUS Factory Authorized Spindle Repair
Northland Tool & Electronics is a factory
authorized BIG PLUS spindle rebuilder.
Insure your getting the maximum performance from your BIG PLUS tooling by having your spindles repaired by Northland Tool & Electronics. To receive the maximum benefit from your BIG PLUS tooling your spindle must meet the same high quality standards you have come to expect from BIG PLUS. Northland Tool has worked closely with the engineers at BIG Kaiser to develop a repair program exclusively for your BIG PLUS spindles.
Special care and attention will be given to the tooling interface, drawbar, bearing journals and balance, insuring that we provide the extreme accuracy required. The tooling interface will undergo specific quality checks throughout the repair process using only BIG PLUS certified equipment provided to Northland Tool by BIG Daishowa Seiki. Call our sales team with any questions you may have regarding your spindle. We are able to assist you with diagnosing issues over the phone or if needed with our on-site test equipment.
OKK VP60 BIG PLUS taper repair
The incorrect tool was inserted during tool change causing the spindle to crash. This caused the tool to spin in the taper shearing off one integral drive dog and severely damaging the second. The BIG PLUS taper and face were also severely damaged. We were able to repair the drive dogs, taper and face in our grinding/machining departments using certified BIG PLUS gauging. We then rebuilt the spindle to strict BIG PLUS specifications. Our repair provided our customer with a spindle that meets or exceeds OEM specifications for considerably less money than their only other option of an OEM replacement spindle. Our expedited service reduced machine downtime by 16 weeks over the OEM option.