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MOLDINO Tool Engineering Europe GmbH
Epoch Micro?End Mill TH : EMM-TH

Epoch Micro?End Mill TH : EMM-TH

Product catalog summary

Overview

This document provides comprehensive technical specifications, product details, and recommended machining parameters for ultra-precision micro machining tools, focusing on micro end mills and drills with diameters under 0.5 mm and radii under 0.3 mm. The tools are designed for applications requiring high accuracy and durability across various materials.

1. Product Categories and Specifications

Square End Mills (EPDS, HYPS-C): Sizes range from 0.03 mm to 0.5 mm diameter, featuring 2-flute design with a 30° helix angle for sharp cutting.
Ball End Mills (EPDB, EPDBP, EPSB, HYPB-C): Radii under 0.3 mm, optimized for micro finishing and detailed machining.
Radius End Mills (EPDR, EPDRP): Diameters under 0.5 mm, designed for precision radius cutting.
Epoch Micro Drills (EMD series): Carbide drills from 0.08 mm to 0.2 mm diameter in 0.01 mm increments, tailored for micro drilling.

2. Key Features and Technical Data

High Precision Shanks: Extremely tight tolerances (roundness ≤0.2 μm, cylindricity ≤0.5 μm, diameter tolerance h4) minimize runout and enhance machining accuracy. Tool markings are placed on shank edges to preserve precision.
Advanced Coatings: TH coating offers ultra-smooth surfaces, hardness of 3600 Hv, and oxidation resistance up to 1100°C, significantly improving wear resistance, especially for tools under 0.1 mm diameter.
Cutting Conditions: Recommended spindle speeds up to 50,000 rpm and feed rates vary by tool diameter and material hardness. Detailed parameters are provided for aluminum alloys, stainless steels, hardened steels, copper tungsten, and others.

3. Recommended Usage and Machining Examples

Micro carving on copper tungsten and sintered high-speed tool steel.
Finishing micro lenses and microfluidic chips.
Machining hardened steels up to 60 HRC and stainless steels such as SUS304 and SUS420J2.
Connector electrode processing and micro fan manufacturing.
Micro-slotting with cutting depths as low as 0.001 mm.

4. Product Lineup and Ordering Information

Epoch Micro End Mills (EMM200 series): 24 items from 0.03 mm to 0.5 mm diameter, available in non-coated and TH-coated versions; stocked and made-to-order items clearly identified.
Epoch Micro Drills (EMD00 series): 13 items from 0.08 mm to 0.2 mm diameter, stocked with TH coating options.
Other Micro End Mills (EPDS series): 58 items under 0.5 mm diameter, with detailed flute lengths, neck diameters, and shank sizes; TH coating indicated by '-TH' suffix.

5. Recommended Cutting Conditions and Guidelines

Cutting depth ratios and spindle speeds/feed rates are specified per material group and hardness level, including carbon steels, alloy steels, stainless steels, pre-hardened and hardened steels, and copper.
Adjustments are recommended based on machine capabilities and workpiece geometry; if spindle rpm is limited, reduce rpm and feed rate proportionally.
Slotting is preferred; side milling with these micro tools is discouraged.
Use clean, undamaged collets to maintain tool stability and prevent damage.
Feed rates for micro drills are generally about 1% of tool diameter.

6. Tool Geometry and Tolerances

Helix angle standardized at 30°; peripheral edge back taper ranges from 1.5° to 6° depending on model.
Radius tolerances: ±0.003 mm for radii ≤0.25 mm, ±0.005 mm for larger radii.
Diameter tolerances vary between 0 to -0.006 mm or -0.010 mm depending on product.
Neck radius, flute length, neck diameter, and overall length are precisely specified per tool series.

7. Material Groups and Machining Parameters

Materials categorized by hardness and type: carbon/alloy steels (180–250 HB), stainless/tool steels (25–35 HRC), pre-hardened steels (35–45 HRC), hardened steels (45–65 HRC), and copper.
Cutting depth and feed rates adjusted according to these groups using provided ratios and tables.

8. Handling, Safety, and Best Practices

Handle tools carefully to avoid injury from sharp edges.
Confirm tool and workpiece dimensions and rotation direction before machining.
Use protective covers and safety glasses to prevent injury from tool breakage or debris.
For tool tip position detection, non-contact measurement devices (e.g., lasers) are recommended; if contact gauges are used, low-pressure types should be employed cautiously.
Tools are not recommended for side milling; high-precision machines are advised for optimal results.
Careful packaging opening is necessary to avoid tool damage.

9. Summary and Conclusion

This document serves as a detailed technical reference for selecting and applying micro end mills and drills in ultra-precision machining. It covers product specifications, tolerances, coatings, and recommended cutting parameters tailored to various materials and hardness levels. Users are encouraged to adapt guidelines to their specific machining conditions and consult additional catalogs for tools with larger diameters or radii. The inclusion of advanced coatings and strict manufacturing tolerances ensures optimal tool performance and longevity in demanding micro fabrication tasks.

10. Environmental and Support Information

The catalog is printed on 100% recycled paper using soy-based ink, reflecting environmental responsibility.
Contact details for Hitachi Tool’s global offices and technical support are provided for consultation and ordering assistance.

Catalog excerpts

End hllll & Drill Buries for Micro Ml'dohlnlny Epoch Micro Drill Other end mills for micro-machining Epoch Micro End Mill Hitachi Tool Engineering, Ltd.

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Epoch Micro Serie Features & Usages Epoch Micro End Mill

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• Micro-TH coating is super-smooth coating developed for micro-tool required higher accuracy. •Micro-TH coating realized higher performance even in micro-tool (under 0.1mm) due to less macro-particle. •The characteristic is the same of conventional TH coating. (Oxidizing temp.: 11001C Layer hardness : 3600HV) Comparison of coating surface conditions Comparison of coating condition for 3ku xaaa 2G»n, esee la/SEpyes ■ zeku xaaa zawm eeea 89/SEP/es High accuracy shank standard

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Technical data Field data Micro carving Work Tool Size Cutting conditions Carving height Direct machining of Sintered High-speed Tool Steel Work Tool Size Cutting conditions Roughing Finishing of micro lens Work Tool Size Under neck Cutting conditions Epoch Deep Ball Competitor's Ball End Mill

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Technical data Tool Size Cutting conditions Technical Data Machining of micro fluid chip Epoch Micro Series Tool Size Other End Mills for Micro-machining Cutting conditions Machining part Using Tool Feed rate Roughing Semi-finishing Finishing Roughing Semi-finishing Finishing

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Connector electrode processing Tool Size Under neck length Cutting conditions Epoch Micro Drill Tool Size Cutting conditions MgMMRH| I Hole depth Stopping hole Large burr

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Technical data Map of Japan (Micro-slotting) Work Tool Size Technical Data Cutting conditions Cutting depth Epoch Micro Series Tool Size Other End Mills for Micro-machining Drawing of NASCA (Micro-slotting) Cutting conditions Hardened Steel

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Epoch Micro End Mill Tolerance on dia. :Right table Shank Roundness : under 0.2/jm Shank Cylindrical profile : under 0.5/jm

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Epoch Micro Series Carbide Micro Drill Epoch Micro Drill Technical Data The cutting rubbish is smoothly exhausted by adopting the Micro-TH coating. The long-lived machining is possible from the resin, nonferrous metals, and stainless steels to the alloy steel. Epoch Micro Series Micro-TH Size(mm) Item code Flute length Overall length Other End Mills for Micro-machining Stocked Items of New Products Recommended cutting conditions Mild Steels, Carbon Steels Feed rate Alloy Steels Feed rate Stainless Steels Feed rate Cast Iron Feed rate Selection of cutting conditions Please select the cutting conditions...

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Other end mills for micro-machining (under 0.5) Epoch Deep Square Helix Angle (-TH) (Total 58 items) Size(mm) Stocked Items. Item Code Stocked Items of New Products. Under Neck Flute Length Length Overall Length Neck Interference R Angle The effective under-neck length for the various draft angles When you want to order TH coated items from us, please add the suffix -TH at the end of the item code.

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Other end mills for micro-machining (under 0.5) Recommended cutting conditions For details about the CS series, refer to work groups 1 - 4. For details about the TH series, refer to work groups 4 - 6. Carbon Steels, Alloy Steels Stainless Steels, Tool Steels Pre-harden Steels Hardened Steels Hardened Steels Ratio to standard depth of cut Under neck Length (mm) Technical Data Recommended range Epoch Micro Series Other End Mills for Micro-machining

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Other end mills for micro-machining (under R0.3) Epoch Deep Ball Helix Angle Tolerance on R :Right table R Tolerance on Dia. :Right table (-TH) (Total 60 items) Size(mm) Stocked Items. Item Code Stocked Items of New Products. Under Neck Flute Length Length Overall Length Neck Interference R Angle The effective under-neck length for the various draft angles When you want to order TH coated items from us, please add the suffix -TH at the end of the item code.

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Other end mills for micro-machining (under R0.3) Recommended cutting conditions For details about the CS series, refer to work groups 1 - 4. For details about the TH series, refer to work groups 4 - 6. Recommended range Carbon Steels, Alloy Steels Stainless Steels, Tool Steels Pre-harden Steels Hardened Steels Hardened Steels Ratio to standard depth of cut Mill Dia. Under neck Length Standard depth (mm) (mm) of Cut (mm) Technical Data Epoch Micro Series Other End Mills for Micro-machining

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Other end mills for micro-machining (under R0.3) Epoch Pencil Deep Ball R2 or higher does not have backdraft shape. Tolerance on R :Right table Helix Angle R Back taper on peripheral edge Tolerance on Dia. :Right table (Total 16 items) Size(mm) Item Code Under Neck Length Stocked Items. Neck Angle Flute Length Under Overall Neck Dia. length Stocked Items of New Products. Approx Interference neck length Angle The effective under-neck length for the various draft angles.

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Other end mills for micro-machining (under R0.3) Recommended cutting conditions Carbon Steels, Alloy Steels Stainless Steels, Tool Steels Pre-harden Steels Hardened Steels Hardened Steels Ratio to standard depth of cut Mill Dia. Under neck Length (mm) (mm) Neck Angle ( ) Technical Data Epoch Micro Series Other End Mills for Micro-machining

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Other end mills for micro-machining (under R0.3) Epoch Super Hard Ball R accuracy High-accuracy rating product Standard rating product Under neck length 1.5D type Size(mm) Item Code High-accuracy rating product Standard rating product Flute length The effective under-neck length for the various draft angles Under neck Overall length length Incline angle Under neck length 3D type Size(mm) Item Code Standard rating product Flute length The effective under-neck length for the various draft angles Under neck length Overall length Incline angle Stocked Items. Recommended cutting conditions Hardened...

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Other end mills for micro-machining (under 0.5) Epoch Deep Radius Technical Data Back taper on peripheral edge Helix Angle (Total 18 items) Size(mm) Under neck length Flute length Actual effective length in incline angles Neck dia. Overall length Interference angle Epoch Micro Series Item code Other End Mills for Micro-machining Stocked Items. Stoked Items of New Products.

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