Field Data and Cutting Conditions

This section presents real-world performance data for various cutting tools applied to aircraft, automotive, mold, turbine blades, and machine parts. Tools such as AHU1532R-3 and JDMT150508R PTH30E inserts were tested on materials including general steels (S50C, SNCM equivalent), stainless steel castings, and hardened steels up to 60HRC. Cutting parameters ranged broadly with speeds from 30 to 1600 m/min, feed rates between 120 and 3700 mm/min, and variable depths of cut depending on application.

Key outcomes include up to a 10-fold increase in tool life, spindle load reductions, and machining efficiency improvements up to 1.3 times compared to conventional or competitor tools. Surface quality enhancements such as reduced stepping on cavity and finish machined surfaces were also observed.

Features and Applications

• High-feed ultra end mills feature high rake geometry combining sharp cutting edges with strong edge durability.
• Multi-functional tools support ramping operations and are suitable for a wide range of materials, especially difficult-to-cut turbine blades.
• Insert types FW, TFW, FF, and FA minimize overlap line stepping, improving surface finish quality.
• Two series based on cutting edge length: AHU(L)10 for low depth cuts with multi-flute design, and AHU(L)15 for high rigidity and deep cutting applications.

Tool Design and Performance Enhancements

• Special steel construction and optimized chip pocket geometry increase tool rigidity by 30% over conventional designs.
• Coolant-through holes improve cooling efficiency during cutting.
• New insert substrates and advanced coatings extend tool life and enable higher cutting speeds.
• Standardization of oversized diameter (+1mm) tools for specific machining needs.

Insert Variations and Applications

Insert cross-section shapes vary by type: FW and FF for general purpose, TFW for forged surfaces and strong intermittent cuts, and FA for aluminum with sharp edges. Each insert type is optimized for particular materials and cutting conditions.

Coating Technology and Material Grades

• JP coating enhances hardness and oxidation resistance for high-hardness materials.
• Micro-grained cemented carbide substrates improve wear and chipping resistance.
• New PVD coatings improve adhesion, reduce peeling from welding, and are optimized for stainless steel machining.
• High toughness substrates increase cutting edge chipping resistance.

Cutting Evaluation and Test Results

Extensive tests on materials such as SKD11 (60HRC), SUS304, SUS316, and SUS420 demonstrate superior wear resistance and tool life of new grades (JP4005, JM4060) compared to conventional products. Tests included dry and wet cutting, single-flute cutting, and varied cutting speeds and depths. Micrographs reveal improved coating structure and reduced damage, while wear graphs confirm slower flank wear progression and longer tool life.

Product Range and Dimensions

The catalog details bore-type and modular mill heads (D and E types), shank types, and insert compatibility with precise dimensions. Stocked items are clearly indicated. Proper assembly practices are emphasized, such as avoiding lubricants on modular screw threads to prevent interference.

Contact and Support Information

Hitachi Tool offers global support with offices in Japan, Europe, China, USA, Thailand, and India. Technical consultation and tool selection databases are accessible online. The catalog is printed using environmentally friendly soybean ink.

Critical Information Summary

• Tool life improvements up to 10 times depending on material and application.
• Cutting conditions optimized per material with detailed parameters provided.
• High rigidity and multi-functionality enable efficient machining of complex parts like turbine blades.
• Advanced coatings and substrate materials significantly enhance wear resistance and reduce tool failure.
• Insert types and tool geometries are tailored for specific machining tasks and materials.
• Proper tool assembly and maintenance practices are essential to avoid damage and ensure performance.

Technical Specifications: Shank Types and Dimensions

Two main shank types are described: Regular Shank Type (Standard Type A) and Long Shank Type (Undercut Type B). Detailed dimensional parameters include cutter and shank diameters (φDc, φDs), lengths (L, L1, L2, L3, Lf), radius (Rs), and thread sizes (M). Stocked items are marked with a ● symbol.

Parts and Accessories

Parts such as clamp screws, drivers, wrenches, arbor screws, and screw burning protective agents are listed with part numbers and compatibility. Specific drivers and clamp screws correspond to particular cutter bodies.

Modular Mill Head Dimensions

Modular mill heads are categorized into D and E types with detailed size specifications including diameters (φd, φDc, φd1, φDb), lengths (ℓ, a, b), and flute counts. Compatibility with inserts and cutter bodies is specified.

Carbide and Steel Shanks

Separate sections detail carbide and steel shanks with dimensions, stock status, and usage notes. Carbide shanks include air hole options and interference avoidance notes when used with specific parts. Additional machining for neck or total length is available upon request.

Inserts and Cutting Tools

Various insert types compatible with shanks and cutters are listed: FW, FF, TFW, and FA types for general purpose, forged surface cutting, aluminum use, and sharp edge applications. Insert dimensions such as cross-section shape, corner radius (rε), thickness (T), and angles are provided. Inserts with corner radius over 2.0 mm require additional cutter body corner processing. Stock status is indicated by symbols: ● for stocked, ★ for new stocked, and no mark for made-to-order.

Usage Notes and Recommendations

• Avoid lubricants like grease on contact faces and modular screws of modular mills, special shanks, and arbors.
• Parts marked with ※1 and ※2 can be used together without interference.
• Commercial milling chucks and shrink-fit holders are compatible with these shanks.
• For Ø40 shanks, keep protrusion length under 200 mm.
• Additional machining for neck and total length is possible to meet user specifications.
• Insert corner radius larger than 2.0 mm requires additional cutter body corner processing.

Stock and Manufacturing Information

Items are classified as stocked standard products, new stocked products, or made-to-order, aiding procurement and lead time planning.

Cutting Conditions and Recommendations

Cutting parameters for various materials and tool diameters include cutting speed (vc), feed per tooth (fz), spindle speed (n), feed velocity (vf), and axial depth of cut (ap). Typical cutting speeds range from 30 to 800 m/min, with feed rates from 0.05 to 0.25 mm/tooth. Slotting operations require approximately 30% feed rate reduction. Wet cutting is recommended for aluminum and titanium alloys. Early insert replacement is advised to prevent breakage.

Ramping and Helical Milling Parameters

• Ramp angles should generally be 1° or less for optimal results.
• Specific hole diameter ranges for helical milling are provided; pilot holes are recommended if outside these ranges.

Arbor Specifications

Modular mill arbors compatible with BT30, BT40, and HSK-A63 spindles feature air holes for coolant delivery. Dimensions such as diameter, length, and taper angles are specified. Modular design minimizes tool overhang, enhancing rigidity and machining accuracy. Neck section machining is available upon request.

Safety and Operational Recommendations

• Use safety covers and protective eyewear to prevent injury from flying chips.
• Avoid non-water-soluble cutting oils due to fire risk.
• Adjust cutting parameters based on machining conditions, machine capabilities, and workpiece geometry.
• Reduce feed speed to about 70% for grooving operations.

Overhang and Application Areas

Overhang lengths and cutting application areas are detailed for tool diameters from φ16 to φ100 and AHU 10 and 15 series. Overhang is expressed as multiples of cutting edge diameter, with recommended cutting widths and depths provided for various feed rates.

Cutting Performance Data

Performance tables specify spindle speeds, feed rates, and cutting speeds for different tool diameters and materials. For example, aluminum alloys (A5052, A7075) and cast aluminum alloys (AC4A, ADC12) have recommended cutting speeds around 120 m/min with feed per tooth values of 0.15 to 0.2 mm/tooth depending on tool size and type.

Insert Grades and Material Compatibility

Insert grades such as SD5010 and HD7010 are recommended for specific materials: SD5010 for aluminum alloys and copper, HD7010 for graphite and cast aluminum alloys. Cutting speeds and feed rates vary by material and insert grade.

Summary

This document comprehensively guides the selection and operation of high-feed ultra end mills and compatible tooling. It provides critical parameters for cutting speeds, feed rates, ramping angles, and tooling dimensions, emphasizing safety, proper coolant use, and adjustment of machining parameters to optimize tool life and performance across diverse materials and applications.