JMI CNC & Automation is excited to announce a new partnership with AKKO Tooling Systems, a global leader in precision-engineered CNC toolholders and cutting tools. This partnership brings AKKO’s innovative and high-quality products to JMI’s customers, enhancing machining capabilities across industries with reliable, performance-driven solutions.

Founded in 1986, AKKO Tooling Systems has grown into a renowned manufacturer, delivering exceptional rotary toolholders, turning and milling toolholders, and a comprehensive range of precision inserts.

AKKO also sets itself apart with an extensive range of carbide grades tailored for different applications. While many tooling manufacturers limit themselves to a handful of carbide substrates, AKKO offers both high-performance grades and wear-resistant grades, allowing them to be more competitive and meet diverse machining needs.

Their advanced solutions include:

• Rotary Toolholders – Ensuring optimal balance and rigidity for high-precision drilling, reaming, and milling applications.
• Toolholders for Turning & Milling – Designed to minimize vibration and deliver superior surface finishes in turning and milling operations.
• Precision Inserts – AKKO offers a wide variety of inserts, including grooving, broaching, thread milling, whirling, valve seat inserts, and ISO inserts, delivering exceptional accuracy and performance for a variety of machining tasks.

“AKKO’s ability to provide a variety of carbide grades gives our customers the flexibility to optimize performance for specific applications, whether it’s high-speed, high-precision, or wear resistance,” said Kenneth Jones, President of JMI CNC & Automation.

“This unique advantage, combined with their exceptional product range, allows AKKO to stand out as a versatile and competitive solution for the modern machining industry.” continued Jones. 

For more information about AKKO Tooling Systems and the solutions now available through JMI CNC & Automation, visit our AKKO landing page or contact us for a on-site demonstration to test some tools!

by Charles Colerich for Horizon Carbide

Here are four guidelines to help improve your threading process when threading on a lathe.

As a good rule of thumb, always start near the top of the Surface Foot per Minute Range for the material that is being threaded.
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Higher SFM reduces Built-up Edge, the major cause of poor tool life in threading. For Harder or more Abrasive Materials start in the Middle of the SFM range. Once setup is complete SFM can be adjusted for optimum tool life. Tough Micrograin Grade 310 reduces insert chipping from edge build-up at lower SFM and on parts under 1” Diameter.

Set the Depth of Cut (DOC) for the first past at 20-30% of the thread height per side.  G76 controls the depth of cut for the remaining passes.

To find the DOC for the 1st Pass multiply the PITCH by 0.6 to get the approximate THREAD HEIGHT. Multiply THREAD HEIGHT by 20 - 30% to get the DEPTH of the 1st Pass.

Use less than 20% when threading hard materials or larger thread pitches. Do not use “Spring Passes” under .002 DOC Per Side.

Via MAQ Tool.

Grooving has always been a challenging machining task, both for internal and external machining, due to its vibrations. Particularly for internal grooving operations, the feed force is aligned to the radial direction of the tool, and that excites substantial vibrations in the tool holder.

​Traditionally the recommendation is to use a steel damped bar for grooving operations above 5xD and a carbide-reinforced damped bar for operations 6-7xD. Above 7xD it has earlier been nearly impossible to do grooving. Thanks to MAQ, it’s now possible to do grooving operations up to 8xD!

Using an STMD M25-255 product which is a standard steel bar damped with the STMD technology, with an SXFNR 251724 16 cutter head and 16 IR W 2.25 insert, we perform grooving at 8xD overhang length.

​Machining in alloyed steel of 4340 HRC 28-30, the grooving process was smooth and quiet. Thanks to the STMD technology, with its Self-Tuning capabilities, the tool adapts to different types of vibrations, and the limits are again pushed by MAQ.