Form Tools Cost Effective for Some Applications

 Many machining applications require custom solutions.

Article From: 5/19/2011 Production Machining, ,

Click Image to Enlarge

 Many machining applications require custom solutions. Form tools, which are custom inserts, are often a special order choice among machine shops because of the advantages they offer—cycle time, accuracy and finish—which overall are a cost-effective pick for machining a complex cylindrical profile.

The advantages of form tooling are made obvious in this video comparing single-point turning and machining with a form tool. The time benefit is especially highlighted: The in-out stroke of the form tool allows the profile to be machined in about one-third of the time.

This type of tooling is also more accurate than standard tooling because a turning tool involves two machine axes where a form tool uses only one machine axis. Fewer moving elements contribute to less error, which can make achieving tight tolerances easier.

Another benefit to using form tools is finish. With a single-point tool, inevitably there are cusps between rotations of the workpiece as the cutting edge travels along the contour. A form tool omits these cusps, because the entire segment of the part represented by the form is machined in a single plunge.

To read further about form tools and the additional advantage of tool life, read “Form Tools on CNC Lathes.”

As always, if there’s a topic you would like to see covered here, or if you have any comments about past columns, please email me. 

Comments are reviewed by moderators before they appear to ensure they meet Modern Machine Shop’s submission guidelines.
blog comments powered by Disqus

Learn More

Editor's Picks

Video: Form Tools On CNC Lathes

Form tools are traditionally associated with non-CNC machines, but in certain applications they make...

AMAMCO Tool exceeds ISO and AS 9100 standards for quality, precision, and consistency.
Click here>
ERIX tool saves up to 90% of the manufacturing time on back spotfacing and chamfering operations.
Channel Partners