Matt Saccomanno, the Co-Founder of Masa Tool and inventor of the Microconic Workholding sytem will talking about process innovations in the metalcutting manufacturing industry during the International Manufacturing Technology Show, IMTS, in September at McCormick Place in Chicago, IL.
Swiss-type CNC machines have gained in capability and demand as the machined components they produce are trending toward higher precision and micro-sized features. As the machines have become more sophisticated, the underlying basics of workholding remained unchanged until recently.
This presentation is an overview of new developments as well as traditional approaches with relevance to today’s highly capable sliding headstock “Swiss-type” CNC turning centers. The goal is to summarize best-practices for optimizing use of both main and sub-spindle to maximize productivity and overall equipment effectiveness. The material presented is useful for machinists, CNC programmers, tool crib personnel, manufacturing engineers, estimators, and hands-on managers.
If you would like to reserve your spot in this technical presentation and discussion please click the below button.
Set ups are quicker and more repeatable with Microconic™. You can document the micrometer-adjust collet closure in your set up plan so it's done the same every time, regardless of operator skill and without relying on "feel".
How to use the Micrograd™ Face Dial Wrench
For a complete set of instructions please see our installation procedures for more details on how to set up and replicate your clamping pressure on every machine in your shop.
The Microconic Workholding system was featured at the Marubeni Citizen-Cincom of New England booth at the Eastec 2017 Machine Tool Show!
Marubeni Citizen-Cincom is the exclusive New England distributor for Citizen Cincom Swiss style lathes and Miyano Multi Axis turning centers as well as ne of our premier distributors of the Micorconic Workholding system
About the CINCOM L20 Low Frequency Vibration (LFV)
State-of-the-art LFV is a widely applicable cutting technology designed to avoid the problem of spiraling chips, entanglement of chips and built-up edges. Benefits include increased cutting tool life, reduced heat generation and reduced power consumption.
The popular Citizen CINCOM L20 series sliding headstock lathes are now available with Low Frequency Vibration (LFV).
This widely applicable cutting technology – able to handle a broad range of machining shapes and materials – is ideal for cutting difficult-to-cut materials. The state-of-the-art LFV suppresses various risks associated with these materials, such as entanglement of chips and built-up edges.
Depending on the material being cut, a variety of problems can be caused by chips getting entangled with each other, including increased cutting resistance, scarring, changes in the texture of the machined surface, tool nose damage, and built-up edges due to cutting heat. In LFV cutting, “air cutting” time prevents the machining temperature from rising, which both prolongs tool lives and gives relief from various problems caused by chips.
Masa Tool is introducing its Microconic workholding system for use in subspindle Swiss-type machine operations, enabling the operator to switch operations from the main to the subspindle so that usage is balanced.
Masa Tool is introducing its Microconic workholding system for use in subspindle Swiss-type machine operations, enabling the operator to switch operations from the main to the subspindle so that usage is balanced. This capability is said to reduce cycle time in ways that are not possible with conventional collets.
The Microconic system consists of two primary components: a cartridge that fits in the machine’s standard TF20, TF25 or 5C collet closer, and the collet itself, which fits into the cartridge. Each cartridge model has a solid extended nose and can accept both regular and over-grip collets. The over-grip collets open up to 0.157" (4 mm) larger than the clamping diameter.
The Microconic cartridge’s extended nose design directs all of the chucking pressure directly over the workpiece for concentricity and rigidity. Total indicated runout (TIR) for the Microconic system is guaranteed at 0.0002" (5 µm) at the workpiece, absent any runout introduced by the machine structure or other elements of the setup. The system capacity ranges from 0.008" to 0.394" (0.2 to 10 mm) in diameter, with all sizes available from stock.
We got a very unexpected present in the mail this past week! We where very excited to learn that our Microconic workholding system for small diameter part machining was featured in the Rapid Traverse section of the June 2017 issue of Modern Machine Shop!!!
We've got pictures of the article below in case you don't currently subscribe to Modern Machine Shop. You can also download a PDF copy of the entire June issue below in the link. It starts on Page 25 of the PDF download. If you have the print edition it's on Page 22, or you can just read thought the screen shots below.
We want to really extend a very big THANK YOU to Matt Danforth at Modern Machine Shop who wrote this article. Matt really did an awful lot of work learning about the various features of our system. We know there where many many hours that he spent to develop this story just from the sheer number of follow up questions and conversations. We really have an awful lot of respect for the entire MMS team and the effort they put into getting their story's "just right".
The below article excert originally appeared in Advanced Manufacturing magazine.
You can read the entire article at the title link at the bottom of this page.
Medical parts are often delicate, which can create problems when they are picked off with the subspindle for backwork. It is important but difficult to apply just the right amount of pressure to hold the part in the subspindle. And once the optimum gripping force is determined, it is not easy to communicate to other operators how the adjustment was made.
Machine tool accessory maker Masa Tool Inc. (Oceanside, CA) has developed a collet system that makes this process easier. The collet is set using a special tool with marked graduations that enable precise adjustments to the gripping force of the collet.
“You can document the micrometer-like adjustment for the collet closure in your setup plan,” said Matt Saccomanno, CEO. “It’s done the same way every time, regardless of operator skill and without relying on feel.”
One of the more challenging Swiss applications is making dental implants because of their small size. Saccomanno said that Masa recently helped a customer broach a dental implant on the subspindle with the Masa collet system holding only a small land. Considering how much force is applied to the workpiece during a broaching operation, this might have seemed impossible to accomplish.
The reason it is possible is that the Masa collet system applies the gripping forces directly over the area where the collet grips the part. The collet system has two main parts, a cartridge that replaces the standard machine collet and a smaller collet made by Masa that is installed into the cartridge. These components are held to a high accuracy and are made by Masa with proprietary grinding methods. Concentricity variation is held to 0.0002″ (0.005 mm).
“This particular broaching application used an over-grip collet,” Saccomanno said. “The process change moved an operation from the main-spindle to the subspindle and so allowed some simultaneous machining not possible previously. Before they used our system, the part was made entirely on the main spindle.”
An over-grip collet opens up to pass over a shoulder or some other feature on a part in order to grip the part past the shoulder. Masa makes over-grip collets that can open up to 4 mm over the chucking diameter. This is the largest difference in diameter in the industry and still holds 0.0002″ TIR, according to Masa.
Read the entire article by clicking the link below
Special Thanks to Mark Hurst from HiTech Industrial for bringing this application solution to their attention.
This article originally appeared in the April 2017 issue of Today's Medical Developments.
It was the cover story entitled: "Micro-Precision Machining"
Matt Saccomanno’s Microconic collet-type workholder for small part machining was inspired by his experience in a Swiss screw-machine job shop.
By Elizabeth Modic
The Microconic system will be able to do things that are impossible
Our regular MicroconicTM collets help reduce cycle time by allowing a rm grip on the workpiece without causing damage, and yet holding it much more rigidly than any other collet on the market.
You’ll be able to do heavy machining operations in the sub spindle, such as blind hole broaching, that would not have even considered in the past. Now you can switch ops from main to sub!
Set ups are quicker and more repeatable with Microconic.
You can document the micrometer-adjust collet closure in your set up plan using our Micrograd Face Dial Wrench and it’s going to repeat to the same clamping pressure each and every time, regardless of operator skill and without relying on “feel”.
You can calibrate your spindle accuracy with the MicroconicTM cartridge by using it as a precision cylinder gauge.
When that is good, EVERY Microconic collet will run within .0002” TIR: There’s no ddling and swapping collet after collet looking for a “good” one. Set ups go smoothly and predictably.
The Microconic collets fit into our cartridge to hold the workpiece with great precision and rigidity. Unlike traditional extended nose collets our unique design and closing action is inherently more accurate and consistent.
The clamping force is directly over the workpiece at the end of the collet. The origin of the word “Microconic”, alludes to the precise way in which the collet closing taper is formed to cancel the effects of heat treat warp and grind tolerances. As a result, it provides industry- best concentricity every time.
Download or View the 2017 Masa Tool Microconic Catalog:
by MATT DANFORD
Associate Editor, Modern Machine Shop
However, the right workholding can break down these barriers, says Matt Saccomanno, CEO of Masa Tool (Oceanside, California). Founded in the wake of Mr. Saccomanno’s own frustration with secondary operations and underutilization of subpsindles, Masa Tool offers the Microconic system, an alternative to traditional, extended-nose collet designs that applies force closer to the part for greater rigidity and concentricity—advantages that extend to main-spindle operations as well. Another benefit is the ability to adjust clamping pressure at the spindle nose to grip securely without damaging small, fragile workpieces. On the efficiency front, a collet in one size can be swapped for another without reaching anywhere beyond the spindle nose, and any collet can fit multiple draw-type or push-type machine collet closers. This saves time and eliminates the need for different collet series for different machines.
The Microconic system consists of two primary components: a cartridge that fits in the machine’s standard 5C, TF20 or TF25 collet closer, and the Microconic collet itself, which fits into the cartridge.
Collets accommodate workpiece diameters ranging from 0.008 inch (0.2 mm) to 0.394 inch (10 mm).
Total indicator runout (TIR) is guaranteed at 0.0002 inch (5 microns) at the workpiece, absent any runout introduced by the machine structure or other elements of the setup, Mr. Saccomanno says. He adds that the cartridge can be used as a precision gage to calibrate spindle accuracy.
There’s no “feel” involved in tightening the collet, he says. That’s a task accomplished with the company’s Micrograd wrench, which features micrometer graduations of 0.001 inch (0.02 mm) to aid users in dialing in the perfect closure on either a workpiece or a gage pin of the same size. This configuration relegates the machine’s own clamping mechanism to the role of an actuator that triggers the opening or closing of the collet. As such, he advises keeping the machine’s own function at a medium force setting and allowing the Microconic cartridge to control the actual chucking force. Machined from a single piece of hardened steel, the cartridge preserves the dead-length operation of “push-type” collet systems (that is, the collet itself doesn’t move in or out as the machine cartridge actuates the chuck).
He credits much of that precision to the fact that clamping force is applied directly over the workpiece, a contrast with traditional extended-nose designs that apply force farther back. He also credits the manufacturing process. Tapering collet jaws to interface with the machine is nothing unusual.
However, Masa Tool employs a proprietary, five-step grinding process that leaves each jaw with a particularly precise conical shape (hence the name “Microconic”) that forms a particularly tight fit. More specifically, a “slight crown” ensures that the contact point is always centered, he explains, citing the pattern of wear marks on well-used collets as evidence.
Gripping wasn’t the company’s only focus when designing the Micronic system. Reliable part ejection is also critical, Mr. Saccomanno says, particularly with overgrip collets that offer such a wide gripping range. That’s why overgrip models ship with a Microject, a brass ejection guide sleeve that can be machined to mirror the outer profile of the workpiece.
Once threaded into the over-grip collet, the sleeve prevents parts from falling inside the chuck or getting stuck rather than ejecting into the parts catcher. The sleeve also provides a tight seal that improves the ability of through-spindle coolant or shop air to aid in part ejection.
We discusved that many many people had just given up on trying to find a soltuion for balancing out production between the main spindle and the sub-spindle years and years ago. We where even mroe excited than most of the people that stopped by our booth to learn that we had indeed invented soemthing that fixes the problem!
A big thank you to the folks at AMT and IMTStv who interviewed us at the show for the big screen!!
"If you manufacture small parts, you have to see this microcollets ystem, it's no ordinary collet! Check out what we found in the west hall at Microconic by Masa Tool's booth W-2232!" Watch more videos at IMTS.com/IMTSTV
Here you will find the latest press releases, news coverage and technical information about our Microconic™ system
APT Machine Tools
Ejection Guide Sleeve
High Tech Industrial
Machinery Trade International
Metal Cutting Corp
Modern Machine Shop
Next Generation Tooling
Part: Counterbore Drills
Part: Dental Drills
Part: Dental Impant
Part: Medical Device
Part: Surgical Drills
Part: Surgical Taps
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Todays Medical Developments
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