What is the difference between U-groove End Mill and Square end mill?

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What is the difference between U-groove End Mill and Square end mill?

Views: 10 Author: Site Editor Publish Time: 2025-04-25 Origin: Site

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What is the difference between U-groove End Mill and Square end mill?

The U-groove end mill and the Square end mill(flat end mill) have obvious differences in terms of structural design, chip removal capacity, processing scenarios and applicable materials. The following is a detailed comparison and explanation to help you clearly understand their differences:

1.Structural differences

item type	U-groove End Mill	Square end mill
Edge design	The cutting edge is a "U" -shaped arc-shaped groove, usually wider and deeper	The cutting edge is straight and the end face is cut at a 90° right Angle
Chip Space	The groove type is wide and the depth is moderate, which is convenient for chip removal	The groove type is relatively narrow and suitable for ordinary intensity chip removal
Blade strength	The blade strength is high and the ability to resist chipping is strong	The edge of a flat blade is sharper, but relatively fragile

2. Performance and processing characteristics

✅ U-groove End Mill Advantages:

Strong chip removal capacity: The U-shaped design is conducive to large-volume and high-speed chip removal, making it suitable for processing soft metals (such as aluminum and copper) and plastics and other materials.

Low vibration: During cutting, the contact is softer, reducing vibration and improving the quality of the processed surface.

Smoother cutting: Suitable for rough machining of medium and low hardness materials, reducing the risk of chip blockage.

Suitable for high-speed processing: especially very common in aluminum alloy processing.

✅ Advantages of Square end mill:

Wide application range: It can be used for the processing of planes, sides and grooves of almost all types of materials.

High contour accuracy: Suitable for processing tasks that require vertical corners and high-precision contours.

Relatively low price: The cost of cutting tools is lower and they have stronger versatility.

3.Comparison of Applicable Scenarios

Applicable Scenarios	U-groove End Mill	Square End Mill
work material	Soft materials such as aluminium, copper, plastic and wood	Hard materials such as steel, stainless steel and alloys
processing technic	High-speed rough machining and rapid material removal	Fine machining, contour shaping, groove milling
surface requirement	General surface quality requirements	High-precision surface requirements
finish depth	Medium depth (limited by the U-slot)	Multi-functional applications such as deep grooves and stepped holes

4.Summarize

Core difference	U-groove End Mill	Square end mill
Chip removal capacity	Strong	General
Resistance to shock	好	Medium
Working accuracy	Medium	High
Applicable materials	Aluminum/plastic/copper, etc	Steel/alloy/die steel, etc
Cost	Slightly high	Low

If you are engaged in aluminium mill or rough machining tasks for efficient material removal, the U-groove milling cutter is the first choice. However, if high-precision contours, clear edges and corners, or hard metal processing are pursued, ordinary flat tools are more suitable

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What is the difference between U-groove End Mill and Square end mill?

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