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Epoch Micro Drill?EMD

Product catalog summary

Overview

This document provides comprehensive technical specifications, product details, and recommended usage guidelines for micro machining tools, focusing on end mills and drills with diameters under 0.5 mm. It covers various tool types including square end mills, ball end mills, radius end mills, and micro drills, primarily from the Epoch Micro Series.

1. Product Types and Specifications

Square End Mills (EPDS, HYPS-C): Available for diameters φ0.5 and below.
Ball End Mills (EPDB, EPDBP, EPSB, HYPB-C): Radius R0.3 and below.
Radius End Mills (EPDR, EPDRP): Diameters φ0.5 and below.
Epoch Micro End Mill Series: Size range from φ0.03 to φ0.5 mm, including 24 items.
Epoch Micro Drill Series: Carbide drills from φ0.08 mm to φ0.2 mm in 0.01 mm increments.

Key dimensional parameters include mill diameter, flute length, neck diameter, under-neck length, overall length, and shank diameter. Helix angles are standardized at 20° or 30°, with back taper angles ranging from 1.5° to 6°. Tolerances are tight, e.g., diameter tolerance from 0 to -0.015 mm and radius tolerance ±0.003 to ±0.007 mm depending on tool type.

2. Features and Technical Highlights

2-flute design with 30° helix angle for sharp cutting performance.
High-precision shank manufacturing ensures minimal runout:
- Roundness tolerance ≤0.2 μm
- Cylindricity tolerance ≤0.5 μm
- Shank diameter tolerance h4 (0 to -0.005 mm)
Innovative marking on shank edge improves identification without compromising precision.
Micro-TH coating technology provides ultra-smooth, wear-resistant surfaces with oxidation start temperature at 1100°C and hardness of 3600 Hv, especially beneficial for tools under φ0.1 mm.

3. Recommended Cutting Conditions

Cutting parameters are provided for various materials including carbon steels, alloy steels, stainless steels, tool steels, pre-hardened steels, hardened steels, and copper. Guidelines include:

Epoch Micro End Mills (EMM series): spindle speeds up to 50,000 rpm; feed rates adjusted by tool diameter and material.
Epoch Micro Drills (EMD series): spindle speeds 10,000–30,000 rpm; feed rates approx. 1% of tool diameter; step depths ~0.1× diameter.
Use of water-soluble cutting fluids diluted 10–20 times is recommended.
Slotting is preferred; side milling is discouraged for micro tools.
Adjust feed and speed proportionally if machine rpm is limited.
Cutting depth ratios vary by material group; reduce cutting depth to 80% in chip clogging-prone areas (e.g., ribs, blind grooves).

4. Application Examples and Field Data

Micro carving on copper tungsten, sintered high-speed tool steel, stainless steels, and hardened steels.
Machining micro fluidic chips, micro fans, connector electrodes, and micro lenses.
Cutting depths as low as 0.001 mm with high spindle speeds and precise feed rates.
Processes include roughing, semi-finishing, and finishing with detailed cutting parameters.

5. Product Catalog and Ordering Information

Detailed item codes, stock status (● for stocked, ★ for new stocked), and size specifications for each tool type.
Coated versions indicated by suffix '-TH'.
Tolerances on tool diameters: 0 to -0.007 mm for end mills, 0 to -0.005 mm for drills.
Separate catalogs cover items with diameters or radii above 0.5 mm or R0.4.

6. Important Notes and Best Practices

Cutting conditions are guidelines; adjust based on machining shape, purpose, and machine capabilities.
Use collets free of scratches or dirt to ensure tool stability and minimize runout.
Marking on shank edges improves tool identification without compromising precision.
Side milling is not recommended for micro tools.
Non-contact measurement devices (e.g., lasers) are preferred for tool tip position detection; if contact gauges are used, low contact pressure types are advised.
Use protective equipment and safety covers during operation to prevent injury from tool breakage or flying debris.

7. Technical Data Summary

Parameter	Range / Value	Notes
Spindle Speed (rpm)	Up to 50,000	Depends on tool and material
Feed Rate (mm/min)	Varies by material hardness and cutting conditions	Adjust proportionally with rpm
Cutting Depth	Standard depth varies by tool diameter and material group	Reduce to 80% in chip clogging areas
Helix Angle	20° or 30°	Standardized per series
Diameter Tolerance	0 to -0.006 to -0.015 mm	Tighter tolerances for smaller radii
Radius Tolerance	±0.003 to ±0.007 mm	Depends on tool type
Shank Diameter Tolerance	0 to -0.005 mm	Ensures precision fit

8. Summary

This document serves as a detailed technical reference for selecting and applying micro end mills and drills in precision micro machining. The Epoch Micro Series offers a broad range of ultra-small diameter tools with advanced coatings and high-precision manufacturing to ensure excellent performance and durability. Recommended cutting parameters and application examples support effective tool utilization across various materials and machining processes. Emphasis is placed on adjusting parameters based on actual machining conditions and machine capabilities to optimize tool life and machining quality.

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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