G-one intermittent holder

PATENT PENDING

One shot processing

Investment cut

Japan's Tooling Assocation ECO AWARD

Solve your concerns about roundness in intermittent hole machining!

Optimal cutting edge placement through machining simulation

Boring holder designed for single-pass machining of interrupted holes

High-efficiency machining in interrupted holes

Improved efficiency, reduced tooling costs, reduced setup time

Compared to conventional G-one holders, 25% improvement in machining efficiency, 15% reduction in tooling costs, 25% reduction in setup time

One shot processing

Investment cut

Japan's Tooling Assocation ECO AWARD

Amazing facts!

── Introducing ideas and technologies ──

The G-one Holder Intermittent Specification utilizes cutting simulation to achieve high-precision intermittent hole machining through optimal cutting edge placement.
Compared to conventional G-one holders, it ensures superior roundness for intermittent holes and enables high-efficiency machining.
It delivers “improved productivity,” “high-precision machining,” and “reduced tooling costs”.

Improved machining efficiency

Good!

This is the point!

Comparison of accuracy

Good!

Cost reduction

Good!

Reduced setup time

Good!

This is the point!

Optimal cutting edge arrangement for intermittent hole machining delivers superior roundness

Good!

This is the point!

Reduced setup time through fewer cutting edges

Good!

Development / product concept

“Current status and challenges”

For high-precision hole machining in aluminum workpieces, we have established “single-pass machining” from the stock hole using the “G-one Holder”.
However, with increasing product sophistication and weight reduction, demand is growing for machining interrupted holes such as notches and tolerance holes. Conventional products faced the challenge that reducing machining conditions was necessary to prevent deterioration in roundness.

“Development points”

Determining the optimal cutting edge arrangement through cutting simulations during interrupted hole machining. Controlling cutting resistance to suppress roundness deterioration caused by large finishing tool diameters during feed machining. Achieving stable machining accuracy by ensuring adequate clearance during return machining. This achieves high efficiency, low cost, and improved workability for interrupted hole machining.

Processing example

Tool used

G-one intermittent holder

Machining work

Transmission case / Bearing hole

Work material

JIS ADC12 / ENAC-AlS11Cu2(Fe)

Tool diameter

ø59 mm

Cutting conditions

Spindle speed: n = 7,000 min^-1
Cutting speed: Vc = 1,298 m/min
Feed: f = 0.10 mm/rev