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What are the applications of high-speed steel single angle milling cutters in the mechanical manufac
High speed steel single angle milling cutters are widely used in the mechanical manufacturing industry due to their high hardness, good toughness, and strong grindability. The single angle structure (with one side as the main cutting edge and the other side as the secondary cutting edge, with standard angles such as 60 °, 90 °, and 120 °) is suitable for various "groove or slope machining with angles" scenarios. The core application scenarios can be divided into the following categories according to machining requirements:Sources：www.apocrest.com | PublishDate：2025.08.26
1、 Key application scenario: Targeted processing requirements
1. Processing of right angle grooves and step surfaces
The "right angle single angle structure" (such as a 90 ° angle) of high-speed steel single angle milling cutters is the core tool for machining right angle grooves and rectangular step surfaces, especially suitable for scenarios with medium precision requirements and non extreme cutting loads:
Typical scenarios: rectangular oil grooves for machine tool guides, step positioning grooves for gearbox housings, installation grooves for motor end caps, etc;
Advantages: The toughness of high-speed steel can avoid edge cracking caused by vibration during milling (better than brittle hard alloy milling cutters), and the "single-sided main cutting+single-sided polishing" design of the single angle edge can ensure the flatness of the groove side and reduce subsequent polishing processes.
2. Angle groove and inclined surface processing (core adaptation scenario)
This is the core application area of high-speed steel single angle milling cutters, whose "fixed angle single angle structure" can directly match the groove or inclined surface requirements with angles, without the need for customized non-standard cutting tools:
60 ° single angle milling cutter: mainly used for machining V-shaped grooves, such as hexagonal grooves for bolts/nuts (pre machining of inner hexagonal holes), V-shaped positioning grooves for machine tool spindles, and guiding V-grooves for instrument parts;
90 ° single angle milling cutter: Processing right angled inclined surfaces, 45 ° step inclined surfaces, such as right angled transition inclined surfaces of mold cavities and right angled reinforcement rib inclined surfaces of sheet metal structural components;
120 ° single angle milling cutter: for machining narrow V-grooves or pointed structures, such as chamfer grooves on gear tooth tips and identification grooves on tool holders.
3. Chamfering and edge trimming of parts
After machining mechanical parts, it is often necessary to chamfer the "sharp edges" (to avoid assembly scratches and improve structural strength). High speed steel single angle milling cutters can replace specialized chamfering cutters and meet the chamfering needs of various angles:
Typical scenarios: End face chamfering of shaft components (such as shoulder chamfering of motor shafts), edge chamfering of bolt holes on flanges, and root chamfering of gears;
Advantages: Compared to general chamfering cutters, the "fixed angle cutting edge" of single angle milling cutters can ensure consistent chamfering angles for batch parts (such as uniform 45 ° or 60 °), and the durability of high-speed steel cutting edges is suitable for small and medium-sized chamfering processing (without frequent tool changes).
4. Precision groove machining of molds and fixtures
The core function of molds and fixtures relies on "high-precision positioning grooves or guide grooves". High speed steel single angle milling cutters are suitable for scenarios that require "long-term maintenance of accuracy" due to their ability to repeatedly grind and easily restore precision
Mold field: positioning V-grooves for stamping molds, right angle grooves for parting surfaces of injection molds, exhaust grooves (narrow right angle grooves) for die-casting molds;
Fixture field: V-shaped positioning block groove for tooling fixtures, anti slip right angle groove for vise jaws;
Key reason: High speed steel cutting tools can restore their original angle and accuracy through grinding after wear, while hard alloy milling cutters are more difficult and costly to grind, making them more suitable for large-scale "one-time molding". High speed steel single angle milling cutters have higher cost-effectiveness in small and medium-sized mold/fixture processing.
2、 Application advantages: Why choose high-speed steel single angle milling cutters?
In addition to structural adaptability, the characteristics of high-speed steel materials themselves also determine their irreplaceability in specific scenarios:
Good toughness and impact resistance: Some parts in mechanical manufacturing, such as cast iron and medium low carbon steel, are prone to vibration during milling. The toughness of high-speed steel can prevent edge cracking, while hard alloy milling cutters are prone to fracture in vibration environments;
Strong grindability and controllable cost: High speed steel cutting tools can be repeatedly sharpened by a tool grinder after wear (usually 3-5 times), extending their service life, reducing single piece processing costs, and suitable for small and medium-sized production or multi variety part processing;
Good adaptability to cutting temperature: Although the red hardness of high-speed steel (the ability to maintain hardness at high temperatures) is lower than that of hard alloys, it has sufficient stability in medium and low-speed milling (such as cutting speeds ≤ 30m/min), and does not require complex cooling systems (some scenarios can be dry cut), simplifying the machining process.
3、 Application limitations and alternative scenarios
Please note that high-speed steel single angle milling cutters may be replaced by hard alloy or coated cutting tools in the following scenarios:
Large scale high-speed processing: For example, batch V-groove processing of automotive parts requires high cutting efficiency. Hard alloy single angle milling cutters (or coated high-speed steel milling cutters) have higher cutting speeds (up to 80-120m/min), making them suitable for mass production;
High hardness material processing: When processing steel with a hardness greater than HRC35 (such as quenched steel and tool steel), if the hardness of high-speed steel is insufficient (usually HRC62-65), it is necessary to use hard alloy or cubic boron nitride (CBN) milling cutters instead.