• 제품 카다로그
  • 전시회

top

Multi Utility

> Product > Multi Utility

MGT Series

  • Inserts are offered with two edges, for better economical machining
Features
  • Inserts are offered with two edges, for better economical machining
  • Multi function operations - Reduce cycle time & increase productivity with the ability
    to groove, turn, face or copy in an application.
  • Shorten time & save on tool cost - Korloy’s MGT system allows a machinist to
    apply one tool against many applications, reducing the number of tools
  • Flat Cutting Edge - MGT tools have a flat geometry on its cutting edge to ensure
    excellent surface finishes. Even in high Feed applications by using a wiper
    function, Korloy ensures excellent surface finishes in roughing operations.

MGT 시리즈(MGT Series)의 특징

Geometry of chip breaker

MGM(G)N-M

  • Specially designed chip breaker allows a
    smoother chip flow versus conventional
    flat-top geometries through the use of
    a central chip breaker
  • Specially placed convex dots assists with
    chip control in external machining,
    for a smoother chip flow.
  • Chip breaker designed for turning &
    grooving applications

MGMN-G

  • Specially designed chip breaker allows
    narrower chips to promote better
    chip flow
  • Specifically designed for
    grooving applications

MRMN-M

  • Full radius geometry for applications
    that require profiling
  • Available for relief machining

MFMN300

  • Specially designed chip breaker allows
    narrower chips to promote better
    chip flow
  • Chip breaker specially designed
    for face-grooving

MRGN-A

  • Specially designed high positive geometry,
    ideal for machining aluminum
  • The chip breaker’s super buffed,
    high rake angle allows optimal
    chip flow of aluminum

MGMR-PS

  • Sharply designed cutting edge.
  • Recommended in machining low
    carbon steel and stainless stee
  • Specially designed chip breaker allows
    narrower chips to promote better
    chip flow.
  • Able to machine Feed rates and
    small diameter cutting

MGMR-PT

  • Stronger cutting edge with
    a negative land for tougher applications
  • Able to machine at Feed rates
    as high and bar stock
  • Chip breaker design helps narrows
    chips for better flow

MGMN-L

  • Sharp cutting edge
  • Low cutting resistance
  • For auto CNC machine
  • For small Dia. processing

MGMN-R

  • Strong cutting edge
  • For high Feed rate rocessing

MGMN-T

  • For turning & grooving
  • Reduced chipwidth &
    smooth chip control by dot designed
    on the top corner

MGGN-A

  • Smooth chip flow
  • Reduced build up on cutting edge
Parting off (MGMN / MGMR/L)
Parting off (MGMN / MGMR/L)
Workpiece Cutting Speed(vc = m/min)
CVD PVD Uncoated
NC3120 NC3030 NCM325 NC5330 NC500H PC230 PC8110 PC5300 PC3500 PC6510 A30
SMC 80~180 80~180 80~180
SMC 70~150 70~150 70~150 70~150 70~150 70~150 70~150
GC/GCD 50~100 50~100 50~100
STS 50~120 50~120 50~120 60~140
Non-ferrous
metal(AL, Copper)
200~450

Feed(fn = mm/rev)
Cutting width
2 3 4 5 6
0.02~0.15
0.03~0.2 0.08~0.3 0.10~0.4 0.12~0.5
0.02~0.15 0.03~0.2 0.08~0.3 0.10~0.4 0.12~0.5
0.05~0.12 0.1~0.25 0.1~0.30 0.1~0.35 0.1~0.40
0.02~0.1 0.03~0.15 0.08~0.25
0.1~0.35
0.12~0.40
0.05~0.1 0.05~0.2 0.05~0.25 0.05~0.30 0.05~0.35
Facing ( FGD / FGM / FMM / MFMN / MGMN )
Grooving, Turning ( MGMN / MRMN )
Workpiece Cutting Speed(vc = m/min) Feed(fn = mm/rev)
CVD PVD Uncoated Cutting width
NC6110 NC3030 NC5330 NC3120 PC3500 PC215K PC8110 / PC3500 H01 3 4 5
SMC 100~160 100~160 0.05~0.1 0.05~0.12 0.05~0.15
SCM 50~130 50~130 50~130 50~130 200~800 0.05~0.1 0.05~0.12 0.05~0.15
GC/GCD 120~150 120~150 120~150 0.05~0.1 0.05~0.12 0.05~0.15
STS 60~150 60~150 0.05~0.1
0.05~0.12 0.05~0.15
Non-ferrous
metal(AL, Copper)
0.05~0.15 0.08~0.15 0.05~0.15
Grooving, Turning ( MGMN / MRMN )
Grooving, Turning ( MGMN / MRMN )
Workpiece Cutting Speed(vc = m/min)
CVD PVD Cermet Uncoated
NC3010 NC3120 NC3030 NC5330 PC215K PC5300 PC230 PC3500 CN20 CT10 A30 ST20E
SMC 80~200 80~200 80~200 80~180 80~200 80~120 80~120 80~120
SCM 80~180 80~180 80~180 80~180 80~160 80~180 80~180 80~120 80~120 80~120
GC/GCD 60~130 60~130
STS 60~100 60~100 60~100
Non-ferrous
metal(AL, Copper)
150~300 150~400

Feed(fn = mm/rev)
Cutting width
0.5~1.0 1.0~2.0 2~3 3~4 4~5 6~8
0.02~0.15 0.03~0.2 0.08~0.3 0.10~0.4 0.12~0.5
0.02~0.15
0.03~0.2 0.08~0.3 0.10~0.4 0.12~0.5
0.05~0.12
0.1~0.25 0.1~0.30 0.1~0.35 0.1~0.40
0.02~0.1 0.03~0.15 0.08~0.25 0.1~0.35 0.12~0.40
0.05~0.1 0.05~0.2 0.05~0.25 0.05~0.30 0.05~0.35

Face grooving tools

Face grooving tools
  • Economical tools utilizing a double ended cutting edge system
  • Newly designed chip breakers that help ensure chip control for various face grooving applications
  • Korloy face grooving tools provide various holder line-ups to give you more options and benefits
  • MFMN300/절삭 폭 3mm
  • MGMN400-M/절삭 폭 4mm
  • 수평형 홀더 MGFHR/가공경 Ø24~200mm
  • 수직형 홀더 MGFVR/가공경 Ø24~60mm
For Deep Grooving
  • These tools are suitable for deep grooving with a single cutting edge(Tmax 25mm)
  • A variety of chip breakers enable a machinist to apply a wide range of functions in machining
  • A variety of holders ensures multiple application ranges
  • FGD/깊은 그루빙(연삭형)
  • FGM/멀티 그루빙(연삭형)
  • FMM/멀티 그루빙(M급)
  • 수평형 홀더 FGHH/가공경 Ø25~140mm
  • 수직형 홀더 FGVH/가공경 Ø25~140mm
Selection System of Holder
  • Follow these 3 simple directions to choose the right insert and holder for your application

Insert and holder
Choose an insert and
holder that best applies to
your application according
to the cutting width and
part of workpiece to be machined.

Holder Tmax
Choose the holder with the shortest overhang that will still meet the cutting depth required

※ Notice : To minimize chattering, use the shortest holder according to Tmax.

Machining Dia.
Choose the largest size of shank depending on the initial grooving diameter required in the application
Optimization of Face Grooving
  • Roughing : When face grooving deareases the cutting speed 40% below a normal face turning operation
  • Grooving at the initial diameter
  • Face turning away from center
  • Face turning to center
  • Finishing : When face grooving deareases the cutting speed 40% below a normal face turning operation
  • Grooving at the initial diameter to the final cutting depth and face turning away from center
  • Radius operation toward final dimension at the bottom
  • Face turning to center
  • Grooving for the right dimension you want
Notice for Face Grooving
  • Before machining, check and adjust the following holder position
  • Check the cutting edge height at the center of the workpiece. Machine towards the center and check for burrs
  • For better surface roughness, set up the insert in order to perpendicular at center line

Turning and Grooving

Selection of Insert
  • Feed rate : Decide maximum feed rate after considering the insert’s characteristics and machine capabilities.
    (Fmax = W x 0.075)
    Max feed rate should not be larger than the corner radius of the insert
    In grooving applications, chip evacuation problems can be remedied by using step feed methods at small intervals
  • Depth of cut : The minimum depth of cut should be bigger than corner radius of insert
    When deciding on the max depth of cut please consider the machine’s cutting load
    Depending on the shape of the insert, deflection of work piece and clearance angle can be changed
  • 이송
  • 절입량
Notice for turning
  • MGT tools are designed to incur side cutting force from its clearance angle;
    this feature gives you advantage over a standard ISO insert.
  • The standard MGT insert also provides a “wiper” effect to improve surface roughness
Notice for Finishing (offset need final quality)
  • After desired diameter is grooved,
    continuous turning operation might
    cause some deflection of the workpiece.
    In these cases follow the given formula,
    offsetting these factors
    enables the desired diameter
    that you want
  • To eliminate the difference in the machined diameter by utilizing the
    clearance angle (which is commonly generated during
    the final turning operation)
    follow the directions above when machining
    To obtain a good surface roughness
    without offsetting in an application follows the directions below
    1) Groove to the desired diameter
    2) Pull the tool backs a total distance of θ/2
    3) Continue the external turning operation to desired diameter
Notice for Finishing
Notice for MGT turning applications
  • M.G.T tools are available for grooving and turning as a
    multifunctional tool. When using a M.G.T tool keep in
    mind that the tool imitates a standard ISO turning application.
    The application uses a positive clearance angle where a tool’s
    cutting force and depth of cut are all applied in an application.
    This might create normal wear on the insert, after turning,
    a grooving process might not meet the desired diameter
    on the work piece. To off set this, adjust the tool 0.004 inches and
    return to the original position of the grooving application
Notice for MGT turning applications
Machining workpiece with a radius bigger than the insert’s corner radius

Incorrect usage

  • Stabilize your tool pressure.
    MGT tools create a cutting load when machining
    a workpiece with a radius larger than the corner radius of insert (shown in the picture).
    The unequal cutting force might initially break the insert or holder
  • 순차1
  • 순차2
  • 순차3
  • 순차4

pro_tit0402_03

Insert
Lead angle applications
4° - Pipe
(Tubing and hollow bar)
6° - Pipe and solid bar
8° - Solid bar
15° - Small diameter Solid bar
Lead angle 0°(Neutral)
• Parting off on solid bar type
• Occurring the center stub
when parting off
• Prevent to be deflected
workpiece by cutting diretion
during parting off
• Availble for use deep
parting depth
Lead angle 4° ~ 8°
• Reduce the center stub
when parting off on
solid bar type
• Reduce the burr when
parting off on tubing or
hollow bar type
Lead angle 8°~15°
• Parting off on small
diameter and hollow bar type
• Reduce the burr and center
stub when parting off on
small diameter solid bar type
※ Available Inserts : MGMR/L  -  - PS/PT(Lead angle(°))
Selection of Insert
  • To properly match the insert and cutting condition, the following factors should be considered
    • • Width of insert
    • • Chip breaker
    • • Grade and nose R
  • The relationship between the cutting width and cutting depth
    • • Neutral type, inserts with a 0 degree lead angle are best when used an applications maximum depth of cut
    • • In general alloy steel, the maximum depth of cut = W x 0.8
  • Insert with lead angle
    • • To reduce burrs, we recommend using insert with a lead angle. Insert that have larger lead angles reduce burrs but will also deareases tool life. In the case where burrs are acceptable, we recommend using a neutral type insert
Setting of Holders
  • The cutting position should be exactly mounted on
    machined axis in order to create
    a perpendicular direction or 90 to minimize vibration

Setting of Holders

Setting of Parting off
  • The edge height of an insert should be set
    within ±0.1mm based on the center line
    • • Parting off should be done as
      close to the chuck as possible to minimize vibration

Setting of Parting off

Notice
  • Keep a consistent cutting speed and feed
  • Use proper amounts of coolant for better performance
  • Properly clean the insert pocket before mounting insert
Usage
  • If insert is worn, immediately replace with a new insert. This is to prevent the damage on the workpiece
  • If the holder seat is worn or damaged replace with a new one immediately for stable clamping
  • Do not grind or regrind the holder seat
Selection of Chip Breaker
  • Our chip breakers are designed to narrow chips during grooving operations. Narrow chips usually offer the following advantages
  • Deareases friction between chips and the workpiece. This usually gives a better surface roughness finish
  • With better chip flow, a machinist is able to increase feed rates due to a reduced cutting load