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In general, slotting and drilling are difficult to discharge chips, and other processes that require a two-blade end mill to be used.
For machining that is easy to eject chips, such as side cutting, a four-blade ( multiple flutes ) end mill is used to in
In OSG end mills, the symbols "OH~" and "OL~" indicate the blade diameter tolerance.
* The ~ part of "OH~" and "OL~" contains a number to indicate the default tolerance.
OH1・・・0 ~ +0.02
OL1 ・・・-0.02 ~ 0
OL2 ・・・-0.04 ~ -0.02
OL3 ・・・-0.06 ~ -0.04
As an example,
An end mill with a nick is an end mill with a nick in the middle of the blade of a square end mill that is designed to make chips finer and at the same time reduce cutting force. Compared to square end mills, end mills with nicks can process many cutting depths at once. The m
straight flute Molding end mills are sometimes referred to as slotting. (The twist angle of the groove is 0°)
There are applications that are assumed to be used by the customer with additional work, and applications for molding processing that do not easily cause burrs.
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The corners of the end mill are called squares.
Shape of the tip of the end mill (R is the radius)
| Square | ball | corner radius (radius type) |
A ball is one that has a spherical shape on the entire base. The number after R represents the ball radius. R5 indicates a spherical shape with a radius of 5 mm, and its diameter is 10 mm.
Shape of the tip of the end mill (R is the radius)
| Square | b |
It is the length with peripheral flute from the tip. (It is not the length of the groove.) ）
