Category: Todays Medical Developments

Swiss Machine Workholding Cartridges

11/14/2018

The push-type F201M10 micro-workholding cartridge system replaces F20-201 cartridges allowing the user of Microconic collets to achieve concentricity within 5µm (0.0002") in production use.

For use in high precision, small diameter CNC turning applications, it enables users to move more work to the sub-spindle for reduced cycle time.

The F201M10 cartridge is compatible with spindles that accept F20-201 collets including DIN 136E, Meister Swiss 136E, Schaublin F20 (76-201), Southwick & Meister F20-201, KEB (MasWerks) MC20-201, and Hardinge F20-201/4709 collets.

Masa-micorconic-collets Todays Medical Developments

F201M10 CARTRIDGE FEATURES

Solid extended nose, minimal overhang
Single piece construction of cartridge’s core diameter.
Maintains 5µm (0.0002") concentricity at extended nose tip.
Micrometer dial control of collet clamping pressure when using Micrograd Wrench.
Suited for part diameters sizes from 0.2mm (0.0080") to 10.0mm (0.3934").

This article originally appeared in
Today's Medical Developments
July 5, 2018

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Workholding: Success in Medical Manufacturing

11/15/2017

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Todays Medical Developments Log Masa Tool Article

This article originally appeared in the April 2017 issue of Today's Medical Developments.
It was the cover story entitled: "Micro-Precision Machining" by Elizabeth Modic

The Microconic system benefits orthopedic bone screws, miniature precious metal components for pacemakers, and other implantables; machined surgical components made of hypodermic needle tubing; and surgical instrument components. Here’s one example – dental implants.

Material:
Titanium alloy bar stock

Machine:
Star SR20 Swiss-type CNC Automatic Lathe

Previous method:
The dental implant was machined almost entirely on the main spindle of the machine due to the need to have a powerful grip on the bar for a high-force, blind-hole, hexagon broach. Very little work was done on the pick-off spindle, so that sat idle for most of the cycle.

Cycle time reduction:
164 sec. to 98 sec. per part; 40% improvement achieved by moving all ID machining operations to the pick-off spindle, where they were performed in shaded time while the main spindle completed the OD. This was previously impossible to do with legacy collets, because the broaching force would push the part back in the collet. The 0.001" concentricity requirement of ID to OD could not be reliably achieved with legacy extended-nose collets, and they damaged the critical surface finish on the OD of the implant.

Todays Medical Developments Microconic Dental Implant workholding

Matt Saccomanno’s Microconic collet-type workholder for small part machining was inspired by his experience in a Swiss screw-machine job shop.

Cost savings:
Production rate went from 18pph to 32pph, a 44% cost savings. In addition, a hand deburring operation was eliminated due to the cut-off being on the opposite end.

ROI:
Cost of the Microconic system was recouped in 64 production hours; a $14,015 saved in direct production costs of a 10,000-piece order.

About the author: Elizabeth Modic is the editor of Today’s Medical Developments and can be reached at emodic@gie.net or 216.393.0264.

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Workholding: Design and Function

8/23/2017

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This article originally appeared in the April 2017 issue of Today's Medical Developments.
It was the cover story entitled: "Micro-Precision Machining" by Elizabeth Modic

Microconic’s cartridge is made of exotic high-chromium tool steel, triple tempered and cryogenically treated to provide stable construction. All functional seating surfaces are ground with extreme precision on a one-piece, ultra-rigid body structure.

“The cartridge can be used as a calibration gage to verify the machine spindle accuracy,” Co-owner Chip Prescott notes.

Microconic collets are finished to exacting standards with a five-step grinding process that removes the effect of heat-treat warpage. Also, the proprietary Microconic form of the closure surfaces is inherently more accurate than traditional collets, providing for a greater full-accuracy working range.

Cartridges are available to fit in push-type dead-length collet closers and also draw-type closers: F20M10 (for TF20 collet replacement), F25M10 (for TF25 collet replacement), and 5CM10 (for 5C collet replacement). All of these cartridges use the same Microconic UM10 collets, with more cartridge sizes in development to be released soon.

Microconic Workholding: Design and Function

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Workholding: Micro-Precision Machining

5/10/2017

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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

In 1996, Matt Saccomanno, co-founder of Masa Tool, was frustrated with the limitations of conventional collets and workholding systems when performing secondary machining operations as engineering manager at Allied Swiss Screw Products.

This was in the early days of CNC Swiss-type machines, when machining capabilities were limited, requiring lots of secondary operations. His solution – a high-precision, collet-type workholding device for small parts machining.

As machining capabilities advanced and precision requirements became more challenging, Saccomanno realized that the legacy collet systems used in micro-machining were a serious limiting factor that prevented full use of modern machine capabilities.

That prompted Saccomanno to design the next generation, the Microconic system.

Todays Medical Developments Microconic Workholding April 2017

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Swiss Machine Workholding Cartridges

Workholding: Success in Medical Manufacturing

Workholding: Design and Function

Workholding: Micro-Precision Machining

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