Threaded Insert for Cutter XDGX-GM

Product features and specifications

Basic specifications and features of the product

• Low resistance threaded insert
• Good wall surface flatness
• Supports high-speed rotation
• Supports a variety of machining
• With is a coolant hole

Drawing

Recommended cutting conditions

Recommended cutting condition table

Cutting speed

Depth of cut and feed rate

Lamping and helical machining conditions (aluminum alloy)

*1) Lamping, helical machining, and drilling are not recommended for steel and titanium alloy.

*1) Adjust the table feed during ramping and helical machining. (Feed of 0.05 mm/t. or less per blade is recommended)

• * 1 Indicates the distance L = (maximum depth of cut APMX/tan α) to reach the maximum depth of cut APMX at the maximum ramping angle.
  The maximum depth of cut APMX is 15.5 mm for A type and 14.8 mm for B type.
• * 2 For 1.2 mm corner radius. In other cases, use the right formula. ([Cutting diameter DC] - [Corner radius] - 0.25) × 2
• * 3 For 2.4 mm corner radius. In other cases, use the right formula. ([Cutting diameter DC] - [Corner radius] - 0.25) × 2
• * 4 For 3.2 mm corner radius. In other cases, use the right formula. ([Cutting diameter DC] - [Corner radius] - 0.25) × 2

Maximum drilling depth (aluminum alloy)

Precautions for cutting conditions

• *1) This cutting condition is a condition setting not to cause chatter vibration when the machine rigidity and workpiece rigidity are high. If chattering or chipping of the threaded insert, etc. occurs during machining, please change the condition depending on the situation.
• *2) Especially in the following cases, chatter vibration is likely to occur. Please reduce cutting width, cutting depth, feed per blade, or other cutting conditions.

• When the amount of tool runout is large
• When the machine rigidity, workpiece rigidity, and workpiece clamp rigidity are low
• Corner radius when pocket machining

Applicable work material

Selection support information

Combination of holder and threaded insert corner radius

Please note that there is no compatibility between the threaded inserts compatible with A type and B type holders, respectively.

AXD4000 threaded insert selection method

It is necessary to select a threaded insert depending on the cutting conditions and machining environment. Please select using the following as a guide.
For stable cutting conditions, a sharp GL chip breaker is the first recommendation.

Selection of insert according to feed per tooth and required cutting depth

Selection of insert according to feed per tooth and required cutting depth

For aluminum alloys, the GL chip breaker is the first recommendation to use. A GM chip breaker is recommended for load-bearing conditions such as large feeds and cuts.

Selection from the cutting edge

GL
TF15/LC15TF

Low resistance type: Sharpest angle (LC15TF: excellent chip-weld resistance)

GM
TF15

Reinforced cutting edge type

GM
MP9120

Reinforced cutting edge & abrasion resistance type
Difficult-to-cut material machining & aluminum machining

Selection from abrasion resistance

Selection support information

Cutting speed (vc)

* The purpose of division by 1,000 is to change the unit from mm to m

vc (m/min): Cutting speed
DC (mm): Cutter diameter
π (3.14): Pi
n (min^-1): Spindle revolutions per minute

(Example) When cutting with the axis rotational speed of 350 min^-1 and the cutter outer diameter of ø125, ^{what is the cutting speed?,} (Answer) Substituting π = 3.14, DC = 125, n = 350 into the formula,
vc = π · DC · n/1,000 = 3.14 × 125 × 350/1,000 = 137.4 m/min
Accordingly, the cutting speed is 137.4 m/min.

Feed per tooth (fz)

fz (mm/tooth): Feed per tooth
z: Insert number
vf (mm/min): Table feed per minute
n (min^-1): Main axis rotational speed (Feed per revolution f = z × fz)

(Example) When the main axis rotational speed is 500 min^-1, the number of inserts is 10, and the table feed ^{is 500 mm/min, what is the feed per tooth?,} (Answer) Substitute the above figures into the formula,
fz = vf/z × n = 500/10 × 500 = 0.1 mm/tooth
Therefore, the feed rate per blade is 0.1 mm/tooth.

Table feed (vf)

vf (mm/min): Table feed per minute
fz (mm/tooth): Feed per tooth
z: Insert number
n (min^-1): Spindle revolutions per minute

(Example) When the feed per tooth is 0.1 mm/tooth, the number of inserts is 10, and the main axis rotational speed is
500 min^-1,what is the table feed?, ^{(Answer) Substitute the above figures into the formula,} vf = fz × z × n = 0.1 × 10 × 500 = 500 mm/min
Accordingly, the table feed is 500 mm/min.

Cutting time (Tc)

Tc (min): Processing time
vf (mm/min): Table feed per minute
L (mm): Total table feed length (work material length (l) + milling machine diameter (DC))

(Example) What is the cutting time required for finishing the surface of cast iron (FC200) block with 100 mm width and 300 mm length, when the face milling machine diameter is ø200, the number of inserts is 16, the cutting speed is 125 m/min, and the feed per tooth is 0.25 mm (Main axis rotational speed is 200 min^-1)
(Answer) Calculate table feed per minute,
vf = 0.25 × 16 × 200 = 800 mm/min
Calculate total table feed length, L = 300 + 200 = 500 mm
Substitute the above answers into the formula,
Tc = 500/800 = 0.625 (min)
0.625 × 60 = 37.5 (sec) It takes approx. 37.5 seconds.

Cutting power (Pc)

Pc (kW): Cutting power
ap (mm): Depth of cut
ae (mm): Cutting width
vf (mm/min): Table feed per minute
Kc (MPa): Specific cutting force
η: (Machine coefficient)

(Example) What is the cutting power required for milling tool steel at a depth of 2 mm cut, a cutting width of 80 mm, and a table feed of 280 mm/min, based on the conditions of a cutting speed 80 m/min, cutter diameter ø250, 12 inserts and machine coefficient 80%.

(Answer) First, calculate the main axis rotational speed to obtain feed per tooth of the milling machine.
n = 1,000 vc/πDC = 1,000 × 80/3.14 × 250 = 101.91 min^-1
Feed per tooth fz = vf/z × n = 280/12 × 101.9 = 0.228 mm/tooth
Substitute into the formula,
Pc = 2 × 80 × 280 × 1,800/60 × 10^6 × 0.8 = 1.68 kW

Cautions/prohibitions

Please note that the threaded insert corner radius (RE) is slightly different from the workpiece R shape after machining due to the influence of the cutting edge rake angle.
A GM chip breaker is recommended when the dimensional accuracy of the workpiece shape is important.