What depends on the formation of a milling area? The resulting milling surface can be an axial, radial or complex surface depending on the type of tool and process used.
01
Surface generated axially
The lower shape of the blade determines the resulting surface quality. A knife cutting arc (re) sometimes generates an arrow. The size of the arrow depends on the radius of the arc and the power supply.
The blades with parallel blades (BS) can be transformed into plans. The most prominent blade creates the final surface according to the axial tolerance and the quantity of jumps of the fragmentation of milling.
Cup arc ray (RE) and parallel blade belt (BS)
In order to produce the best quality of the milling surface, it is important to ensure that the supply by revolution (FN = FZ × Zn) is less than 80% of the BS.
As the diameter of fraigning increases (and for ultra-tight milling cutters), the number of teeth and the food per revolution increases, thus requiring a larger BS. Once the revolution is diet exceeds the width of the parallel blade, the axial jump in the fragmentation of milling will affect surface quality.
For an optimal milling surface quality:
1) Use a wiper insert (repair blade) or another milling insert with a BS which is at least 25% larger than FN
2) Use cermet blades to produce better finish
3) Use cutting fluid to avoid collage
Blade of wiper (skin repair blade)
Light finishing blades or long parallel blade belts can reach a finish of more than diameter. The finishing blade is higher than the standard blade, thus guaranteeing that the finishing blade creates the final surface. The maximum FN should not exceed 80% of the BS.
Round blade
The blades or round blades with a large peak arc radius can obtain extremely high productivity, but cannot produce high quality surfaces. The larger the diameter of fraignage, the more worse the quality of the surface.
02
Radially generated surface
When using an end mill, a shoulder mill or a three -sided mill, a radial surface is generated. For radially generated surfaces, the tools on the tool side are machined.
Each tooth produces an arrow (h), where the width of the arrow is equal to the quantity of fZ power supply per tooth, and the depth of the arrow is determined by the relationship between the diameter of the frapshot and FZ. The theoretical calculation leads to the size of the arrow is the smallest.
03
Complex surface generation
When using a ball mill, complex surfaces are generated.
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