Cutter Insert JOMU

Coated carbide grade for cutting process by rolling
MV1020

Al-Rich coating / advanced abrasion resistance and thermal shock resistance

The Al-Rich coating that does not change the crystal structure even if the Al content ratio is increased has been developed by a new coating process using the unique technology, achieving a high Al content ratio and high film hardness.
By significantly improving the oxidation resistance in addition to the film hardness, extremely excellent abrasion resistance has been achieved.
In addition, due to its extremely excellent heat resistance, excellent machining stability has been achieved not only in dry cutting but also in wet cutting where thermal cracks were likely to occur in the past.

MV1020 crystal image

PVD coated carbide grade for cutting process by rolling
MP6100 / MP7100 / MP9100 series

TOUGH-Σ Technology (Tough-Sigma Technology)
Achieves toughness (TOUGH) by integrating excellent coating technology (Σ).

Base layer high Al- (Al, Ti) N: The increased Al content has made film hardness improved, and high hardness phase stabilized, improving abrasion resistance, crack resistance, and chip-weld-resistance during cutting.
The laminated structure prevents crack progress and improves wear resistance.

CVD Coated Carbide Grade for Steel / Stainless Steel Cutting Process by Rolling
MC7020

It suppresses crater abrasion that occurs in the high-speed region and achieves stable machining even in high-efficiency machining.

• Improved abrasion resistance
  Fine grain high abrasion resistance Al2O3 layer and fine fibrous TiCN layer provide excellent abrasion resistance in high-speed steel / stainless steel cutting process by rolling.
• Improved wear resistance
  By adopting a dedicated cemented carbide base material with excellent toughness and thermal crack resistance, sudden breakage of the cutting edge is suppressed.
• Suppression of abnormal damage
  "All-Black Super-Even Coating" on an extremely smooth surface suppresses abnormal damage such as welding chipping.

Comparison of coating surfaces

Conventional coating

All-Black Super-Even Coating

Performance/test information

"Cutting Conditions"
Work material: SCM440
Cutter diameter: DCX=⌀63 mm
Cutting speed: vc = 150 m/min
Feed rate: fz = 1.5 mm/t.
Depth of cut: ap = 1.5 mm
Cut width: ae = 31.5 mm
Machining form: Single blade cutting
Cutting conditions that reproduce the start of cutting with a sudden load

Ductile cast iron FCD700 abrasion resistance comparison

"Cutting Conditions"
Work Material: FCD700
Tools to use: WJX14
Insert: JOMU140715ZZER-M
Cutting speed: vc = 220 m/min
Feed rate: fz = 1.0 mm/t.
Depth of cut: ap = 1.0 mm
Cut width: ae = 45 mm
Cutting mode: Dry cutting single-flute cutting

MV1020 (30.4 m)

Conventional product A (13.6 m)

Conventional product B (15.2 m)

Conventional product C (12.8 m)

Steel alloy SCM440 abrasion resistance comparison
MC7020 has excellent crater wear resistance during high-speed machining.

"Cutting Conditions"
Work material: SCM440
Cutter diameter: DCX=⌀63 mm
Insert: JOMU140715ZZER-M
Material Type: MC7020
Cutting speed: vc = 230 m/min
Feed rate: fz = 1.5 mm/t.
Depth of cut: ap = 1.5 mm
Cut width: ae = 45 mm
Cutting mode: Dry cutting single-flute cutting

Steel alloy SCM440: Comparison of cutting force
WJX can reduce loads on the main spindle due to its low cutting force.

"Cutting Conditions"
Work material: SCM440
Cutter diameter: DCX=⌀63 mm
Insert: JOMU140715ZZER-M
Material Type: VP15TF
Cutting speed: vc = 150 m/min
Feed rate: fz = 1.0 mm/t.
Depth of cut: ap = 2.0 mm
Cut width: ae = 45 mm
Cutting mode: Dry cutting single-flute cutting

Drawing

Recommended cutting conditions

Recommended cutting condition table

Correction factor by tool runout
Please use by multiplying the recommended cutting conditions by the correction factor for each tool runout.

DCON = mounting diameter (Shank diameter)

Cutting speed (Dry cutting)

Depth of cut and feed rate

Double-Sided Insert Type Radius Scatter for High Feed Milling
Recommended cutting conditions MV1020

Selecting proper chip breakers

Machining limit by form

Ramping

Helical drilling

How to set the tool center trajectory
ødc (tool center trajectory) = øDH (desired hole diameter) - DCX (Maximum cutting diameter)

DCX = maximum cutting diameter, APMX = maximum depth of cut, DC = cutting diameter, RMPX = maximum ramping angle, DH = desired hole diameter, AZ = maximum drilling depth

 

Precautions for cutting conditions

Cutting speed (Dry cutting)

*1) Air blow is recommended for reliable cutting chip discharge. If the cutting chip discharge capability by air blow is low, perform wet cutting.
*2) Wet cutting may shorten the lifespan more than dry cutting. For cutting speed, multiply the values of the above table by 0.75.
*3) If large chatter vibration occurs, reduce the depth of cut, feed rate per tooth, and cutting speed in order.
*4) For interrupted cutting, multiply the cutting speed in the cutting speed table by 0.8 and the feed rate per tooth by approx. 0.8.

Depth of cut and feed rate

*1) Air blow is recommended for reliable cutting chip discharge. If the cutting chip discharge capability by air blow is low, perform wet cutting.
*2) If large chatter vibration occurs, reduce the depth of cut, feed rate per tooth, and cutting speed in order.
*3) When cutting intermittently, multiply the cutting speed in the cutting speed table by 0.8 and the feed rate per tooth in the above table by approx. 0.8.
*4) To set ap greater than 2 mm, avoid machining near a wall or ramping.

Selecting proper chip breakers

*1) Air blow is recommended for reliable cutting chip discharge. If the cutting chip discharge capability by air blow is low, perform wet cutting.
*2) Wet cutting may shorten the lifespan more than dry cutting. For cutting speed, multiply the values of the above table by 0.75.
*3) If large chatter vibration occurs, reduce the depth of cut, feed rate per tooth, and cutting speed in order.
*4) When cutting intermittently, multiply the cutting speed in the cutting speed table by 0.8 and the feed rate per tooth in the above table by approx. 0.8.
*5) To set ap greater than 2 mm, avoid machining near a wall or ramping.

Machining limit by form

*1) During ramping and helical milling, reduce the feed rate per tooth.
*2) Please be careful about safety because continuous long cutting chips may scatter during ramping and helical milling, especially drilling.
"Helical milling"In order to obtain a flat bottom in helical milling, it is necessary to remove the "core" created on the work material in the final machining path.
In helical milling, please be careful so that the depth of cut per pass does not exceed the maximum depth of cut, APMX.
"Drilling"When drilling, set the feed per revolution in the axial direction to 0.2 mm/rev or less.

Applicable work material

Selection support information

Insert material type that covers a wide range of work materials

Chip breaker system