To avoid crushing and ruining parts, Swiss precision manufacturer Micro-Matics turned to Masa Tool’s Microconic collet and cartridge system. Since 1973, Micro-Matics of Fridley, MN, has been manufacturing CNC Swiss precision screw machine products including many kinds of contacts & pins, ground shafts, hardened bushings, rivets, screws, spacers and other custom parts for the medical, dental, aerospace, commercial, defense, computer, telecommunications and automotive industries. According to Jason Wobig, Operations Manager, "Micro-Matics is primarily an aerospace and medical components, Swiss machining job shop. We make components that are thousandths of an inch up to an 1-1/4" in diameter. We started out with the old manual style, Cam driven Swiss machines and we're one of the largest Escomatic shops in the Midwest. And as the company's grown and evolved, we've turned into Swiss job shop, mostly Citizen machines like the M16, a L12, and a M32, as well as a few Star and Tsugami machines that give us a wide variety of capabilities." |
A while back Micro-Matics was running a small medical part, a catheter part, that they were struggling with. They had some custom collets made for pickoff and, according to Dave Thayer, Department Manager, "It was a constant struggle. This particular catheter part has very thin walls, it got crushed with a standard M16 collet system because you have very little accuracy in how much tension you're putting on your collet. If you put too much force on it, my parts started turning to collapse into triangles. If you don't have enough tension on it, the part pushes back into the pickoff and you get varying part lengths and varying chamfer diameters. The parts would be out round and they wouldn't be on-center." Wobig had heard about Masa Tool's Microconic™ sytems through Todd Pakiz, President of High Tech Representation Inc., New Prague, Minnesota. "Todd had told me about this system a couple years back. And we had been struggling with these parts. So I reached out to Todd and see if he's still selling that system." |
Wobig continues, "I wanted to try this system for the catheter part which is a small thin-walled part approximately 0.040" in diameter and another 0.040" in length and with a wall thickness of 0.010". So I wanted something that wasn't crushing the part. It was really hard to adjust the machines pickoff spindle itself to any degree of accuracy without crushing a part." What Wobig found with the Masa Microconic system was that they could set up the clamping with a gage pin and set the clamping tension with the Micrograd™ Dial Wrench which has little indicators to set an actual tension. |
Cartridge and collet solution
The Microconic system consists of a cartridge and collet, with the cartridge fitting in the machine just like a standard legacy collet. The cartridge is a self-contained precision mechanism using the machine’s standard collet closing function, which means that the Microconic system can be used on any machine utilizing 5C, TF20, TF25 or TF37 collets.
According to Saccomanno "Since a collet system for any given machine must be made large enough to fit the maximum workpiece diameter capacity of the machine, the result is the standard collet mechanism is designed to handle the largest workpieces, which means it is excessively forceful and bulky when used for the smaller workpieces. Smaller parts get sacrificed, because they typically require a higher degree of accuracy and the workholding is more critical."
The Microconic system consists of the cartridge, which fits into your machine like a standard collet, and the Microconic collets which fit into Masa's unique cartridge. Every Microconic cartridge comes standard with extended nose for unsurpassed rigidity because of it's single piece construction.
"In fact, the cartridge is so accurate that it can be used as a gauge to verify machine spindle accuracy," said Pakiz.
Thayer explained how the Microconic system has worked for Micro-Matics "With the Masa system we're able to dial in a nice specific tension to hold that catheter part without crushing it or deforming it at all and having it on center. In a nutshell, we get better quality parts consistently with tighter tolerances. It's lead to a really significant improvement, it's increased throughput, so we have more parts at the end of the day."
"As a result of the implementation, the scrap rate on this part dropped dramatically once we added the new Masa system by at least 30%." added Wobig.
According to Masa Tool, the Microconic cartridge concentricity is guaranteed to be within 5µm (.0002") runnout and the collets are hardened and precision ground to the highest quality standards. The regular, UM10, 10mm collets, that Micro-Matics is using in their F20M10 Cartidge are available from Ø0.2mm (.008") to 10mm (.394"). In additon to the TF 20 spindles, the same collets can be used in TF25, TF37 and 5C sub spindles.
Applying technology to other applications
Micro-Matics has been running one of the collets for a couple of months straight now on a distal coupler.
Thayer explains, "The distal coupler part has a unique shape. It's not perfectly round. It has some small flats milled on either side of the part. It's like a cylindrical pill, like a capsule except with two sides of the long length milled in so there's flats on it. The part is 0.080" in length 0.040" in a cylindrical diameter. We then mill the cylindrical diameter 180 degrees from each other to a thickness of 0.030", so you're taking 0.10" off then drilling and centering two holes on each end of that through the flats."
"Our customer is extremely concerned about any collet indication marks or chip marks on the outside of that cylindrical diameter. The previous collets we were using were custom made collets that actually had the profile of the part basically machined into it" says Wobig.
Thayer picks it up, "It was a straight cylinder round collet it but it was split in half so it was like two halves of a collet so we were trying to keep the flats in the spaces and then the round cylinder on the collet part that's round. The holding portion it would move and we didn't have them pinned at all. And then we had the same issue as on the catheter part: If you squeeze it too tight you're starting to push the diameter into the flat so it would deform the OD into the flat and make deformed flats. If you squeezed it too hard, it would make the flat bump up. If it didn't sit perfectly right in the custom collet you'd have the split marks of the collet that start interfering with the transition between the flat to the diameter and it would make lines on the diameter." | |
Remedying the issues
Thayer continued "The extended nose pieces on the Microconic cartridge helps on the catheter tips because you can get closer up to where I actually have a supporting back end. Because if I'm too far away from that supporting back and you have more of a tendency to crush the front of that part. The Microconic gives me a better tension on the part. On the distal coupler, we have to use a boring bar, or a facing tool to create the back face, which is round. We'd have a lot of trouble trying to hold without nibs or anything on there. And this holds it so that the part stays a little more square, and we're able to turn it better."
When dealing with very small parts and setting with small gage pins, accidents do sometimes happen. "The only problem I've had with it was when somebody was trying to set the collet tension with a pin. They put the pin into the slot and not the hole and wrecked the collet. Because the pin was able to fit inside the slot so when they started tightening it up, and the pins started deforming the collet was wrecked because it wasn't in the hole in the center." said Thayer.
Masa has indicated that they will release a new TF 15 and TF16 Cartridge with an entire series of smaller 5mm capacity collets at IMTS 2022.
Specificationz
Microconic over-grip collets have unmatched rigidity and concentricity compared to other manufacturers. The same collets can be used in TF20, TF25, and 5C sub spindles. Microconic collets permit interchangeability between machines, and the collets fit in any Microconic cartridge, no matter which collet system is in the machine.
New release
The guys from Jones Marketing also invited our Florida Sales Team, RAM Sales & Marketing to bring some of their customers by as well. We had some great conversations with the folks from Tsugami, Citizen, Ganesh and iSwiss as well.
SouthTec announced that they would be permanently re-located to this facility in Greenville SC for all the future shows. We'll look forward to returning!
This was the very first trade show for us in Dayton Ohio! It was held at the Dayton Convention Center and we where hosted by Ed and Mike from Tool Marketing Service's in their booth #425 that was just across the aisle from the Star CNC Booth. It was a great time to showcase our Microconic Workholding system for subspindels in swiss machining centers. We had to opportunity to talk to several application engineers Citizen, Star, Tsugami and Genesh and talk about several upcoming applications for bones screws being manufactured in the area. |
Author
Here you will find the latest press releases, news coverage and technical information about our Microconic™ system
Archives
February 2023
November 2022
October 2022
September 2022
August 2022
July 2022
June 2022
May 2022
April 2022
March 2022
January 2022
October 2021
May 2021
July 2020
March 2020
February 2020
December 2019
March 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018
February 2018
January 2018
December 2017
November 2017
October 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
May 2015
April 2015
August 2014
May 2014
March 2014
July 1999
Categories
All
5C Cartridge
5C Collet
Advanced Manufacturing
Advertisement
Agent Profile
AMTS
APT Machine Tools
Avinger
Bell Mouthing
Bone Screws
Case Study
Catalog
CEO CFO
Chip Wrapping
Cincom
Cincom L12
Cincom L20
Cincom M16
Cincom M32
CNC West
Collet
Concentricity
Dental Implants
Dragan Marjanovic
Dunner SA
Eastec
Ejection Guide Sleeve
Emergency Collet
F13M5
F15M5
F16M5
F201M10
F20M10
F37M10
Floyd Automatic
Ganesh
High Tech Industrial
IMTS
ISwiss
Jones Marketing
Lane 4
Machinery Trade International
Magazine Article
Mann Sales
Marubeni Citizen
Material: 6Al4V
MAV Innovations
Metal Cutting Corp
Microconic
Micrograd Wrench
Microguide Sleeve
Micromachining
Micro-Matics
Modern Machine Shop
Morris South
NETC
Next Generation Tooling
Oceanside Facility
Oktoberfest
Open House
Overgrip Collet
Part: Counterbore Drills
Part: Dental Drills
Part: Dental Impant
Part: Medical Device
Part: Surgical Drills
Part: Surgical Taps
PMTS
Press Release
Production Machining
Productivity Inc.
Ram Sales & Marketing
Schlenker
SIAMS
South Tec
South- Tec
Star CNC
Star SR20
STEM
Tech Tip
TF15
TF16
TF20
TF25
TF37
Todays Medical Developments
Tool Marketing Service
Trade Show
Trade Shows
Tsugami
UM10
UM10T
UM10W
UM5
UM5T
UM5V
UM5W
Videos
Workpiece Deflection