New products from Walter, SCHUNK, BIG KAISER and ETEL.
Solid Carbide Tool for Dynamic Milling
Walter has introduced a new version of its Walter Prototyp Proto·max ST high performance, solid carbide milling tool. It is designed for optimum performance on steel with secondary applications in stainless steel.
The new mill has five cutting edges and is available with a Weldon shank configuration for secure clamping, with or without corner radius and without a reduced neck for greater stability using the maximum amount of carbide. It possesses a helix angle of 35° and is offered in the diameter range of 6-25 mm.
TAZ coating dramatically increases tool life and lowers coolant use, as dry machining is the recommended approach.
Importantly, the Proto·max ST Z-5 is well suited for dynamic milling, which maintains a constant tool-engagement angle. This allows large depths of cut to be taken, fully utilizing the entire cutting edge of the tool. This is normally combined with radial chip thinning, accomplished by taking a small radial depth of cut; around 10-15 percent of the tool diameter is actually engaged in the cut.
This combination allows for very high speeds, plus very high feed rates and deep depths of cut, typically leading to high material removal rates and lower cutting forces.
For more information, visit www.walter-tools.com.
Universal Hydraulic Toolholder
SCHUNK has recently released the new TENDO E compact, eliminating the need to use different holder technologies for milling, drilling and reaming.
Hydraulic expansion toolholders can safely transfer torques of up to 520 Nm (384 ft-lbs) at a 20 mm clamping diameter and are perfectly suited for high-volume cutting.
With excellent vibration damping and precise run out accuracy of less than 0.003 mm (0.0001”) at 2,5 x D, the TENDO E compact protects the machine spindle and cutting tool from damage.
The hydraulic expansion toolholder works well across the application range from rough milling to finish operations such as reaming and fine milling.
Tools can be changed quickly with an Allen key, making this hydraulic expansion toolholder an alternative for operations where the toolholder quantities do not justify peripheral equipment purchases.
Common spindle connections are available, including these interfaces:
- HSK-A63
- SK40
- BT40
- CAT40
- CAT50
For more information, visit www.us.schunk.com.
Noliac Piezoelectric Actuator
Noliac has recently launched their piezoelectric actuator stacks, which operate in temperatures up to 200 C. Combined with a high frequency operation, this makes them ideal for the aerospace and oil & gas sectors.
The standard Noliac actuator stacks have a maximum operating temperature of 150 C. The choice of materials is crucial to reaching a higher operating temperature.
“To achieve the high maximum operating temperature of 200 C, we are using piezo actuators made of our hard doped piezoceramic material NCE46,” explained Charles Mangeot, senior R&D engineer at Noliac.
Besides the features of high operating temperature and high frequency, the high-temperature stacks offer more stable performances over a wide temperature range.
Available high-temperature stacks include the NAC6024-Hxx and the NAC6025-Hxx. Other sizes are available on request along with high temperature ring stacks and different operating voltages.
For more information, visit www.noliac.com.
Mega Perfect Grip Milling Chuck
BIG KAISER has introduced the Mega Perfect Grip from BIG Daishowa. The heavy-duty milling chuck for heat resistant super alloys (HRSA) is designed to eliminate end mill pullout under heavy torque loads.
For manufacturers using milling chucks, pullout is a major issue, particularly when machining HRSA’s such as titanium or Inconel. In demanding applications, such as those in the energy and aerospace markets, there is a need for guaranteed security against pullout – ensuring there is no costly damage to parts or delays in manufacturing processes.
The Mega Perfect Grip, with fully concentric clamping, combines the accuracy and cutting performance of heavy-duty milling chucks with the security against pullout of solid side-lock tool holders.
To keep the system cost-effective, it is based around milling cutters with a standard Weldon flat (ASME B94.19-1997). No special grinding or threading of the milling cutter is required.
The three key grip grooves in the chuck body also serve to provide channels for high-volume coolant to reach the cutter, which is required in milling HRSAs to dissipate heat and to remove chips efficiently.
The Mega Perfect Grip is available in BIG-PLUS BCV50 and HSK-A100 for Ø.750”-1.250” and HSK-A125 for Ø1.000” and 1.250”.
For more information, visit www.us.bigkaiser.com.
The RTMB from ETEL
ETEL recently announced their new generation of indexing tables: the RTMB.
By combining ETEL’s torque motors with HEIDENHAIN’s high-resolution encoder technology in a compact package, the RTMB delivers improved torque density with higher positioning accuracy.
With lower inertia and increased continuous torque, ETEL’s indexing tables are now capable of even higher dynamics and shorter indexing times, resulting in increased machine throughput for the end-user.
In comparison to its predecessor, the RTMB offers 15 percent improved continuous torque, a 20 percent reduction in inertia, 10 percent improved peak torque. It also offers 600VDC compatibility while maintaining the same mechanical (pin-to- pin) interface for easier integration.
It also offers improved in accuracy (±20arcsec), unidirectional repeatability (±2arcsec) and bi-directional repeatability (±3arcsec).
The RTMB family consists of indexing tables with five different active lengths to match torque and size with specific application requirements, providing peak torque up to 197 Nm, continuous torque up to 36.4 Nm, and top speeds of 1200 RPM. All RTMB tables have an optimized 166 mm outer diameter and a large, 25 mm hollow shaft.
Alone or coupled with ETEL’s force controlled short stroke actuators and AccurET controllers, the RTMB can be used for applications including:
- Back-end semiconductor manufacturing
- Electronics
- Automation
- Printing, such as MEMS testers, die bonders, pick and place testers and turret testing handlers.
For more information, visit www.etel.ch.
