•The wiper insert is designed with a short, flat edge that is located where the straight edge meets the corner radius.
•In comparison to conventional breakers, the surface finish is maintained even if the feed rate is doubled.
•Machining at high feed rates improves cutting efficiency.
• Improving Surface Finish Roughness
• Improving Efficiency
• Increased Tool Life
• Improving Chip Control
Wipers are effective when external machining, boring and facing.
* The surface roughness when machining at corner R or taper angle over 5°, is same quality as machining with the standard inserts.
The standard holder can be used as it is.
(* The double clamp, highly rigid holder is recommended.)
Use a holder with an end cutting angle of 93°to improve wiper efficiency. A holder with a cutting edge angle of 91°can marginally improve wiper efficiency (see the figure below), however, there is no wiper efficiency with other end cutting angles (60°, 90°, 107°etc.).
If dimensional errors occur, please adjust machining program to compensate for insert nose configuration.
(The DNMX • TNMX types are not based on the ISO/ANSI.)
Required to machine an accurate form or taper.
Move the tool perpendicular to the machined surface.
(Note) Adjust the drive-in angle toward the normal line when the part where the adjust number in minus (θ=60° - 70°) is not machined completely.
Machine the correct form by altering the tool path corner radius.
Programmed corner radius = Part print (P/P) corner radius + compensation factor.
Machine the correct form by altering the insert nose radius value in the machine program.
It is not necessary to alter the tool path when using this method however, a dimensional error of up to +/- .0012" may occur.
(Note) The correction value is the same for both DNMX and TNMX inserts. Discriminate between them only by the different nose radius.