Cost improving YG-1 Flat Drills

YG-1 flat drill has low cutting force and excellent chip evacuation. It has good cost performance!

DPP447、DPP450 Series

Flat drills with low cutting force, high chip control performance, and excellent cost performance.
We have a lineup of standard products from Φ3.0 to Φ20.0.

Introducing the tool life comparison results with other companies' flat drills.

Appealing point: Saving tool cost

Price comparison graph
※Price comparison : company A is taken as 100.
(Comparison with Φ6 2D type without OH)





Japanese drill vs. YG-1 flat drill
Tool life comparison: machining on SCM440

  • Machine
    MAZAK　VCN-430A(BT40)

  • Workpiece clamping condition
    Workpiece material: SCM440
    Size: 200mm square x 50mm height block

Cutting condition (Durability test was performed under cutting conditions that Japanese other company's drill do not vibrate.)

Vc=60m/min, f=0.1mm/rev
12mm depth, Blind hole drilling

  • Japanese other company's flat drill
    2D type without OH
    Actual tool diameter measurement: Φ5.008

  • YG-1 flat drill
    2D type without OH
    (Product code: DPP447050)
    Actual tool diameter measurement: Φ5.001

Test result: After about 200 holes were drilled, there was a big difference in chip control.
Flat drills made by Japanese other companies has a chip clogging around the tool with about 1500 holes drilling.

Chip clogging condition of Japanese other companies drill

During the machining of about 1500 holes, a large amount of chips clogged the tool, and it was judged that further use was not possible.
It is presumed that chip control could not be performed due to a breakage in the cutting edge.

Hole comparison after 1500 holes are drilled with each flat drill

Holes

  • Japanese other companies drill: Hole diameter Φ5.109
    Machining traces and burrs are conspicuous.

  • YG-1 flat drill: Hole diameter Φ4.996
    Less machining traces and burrs.

Chip condition

  • Japanese other companies flat drill:
    Long chips and out of control

  • YG-1 flat drill:
    Cutting chips are short and able to be controlled.

Cutting edge

  • Japanese other companies drill:
    The central part is largely broken.

  • YG-1 flat drill:
    The sholder part is damaged but machining diameter and chips have no problem.

Test progress details

After 1 to 20 holes are drilled

Holes

  • Japanese other companies flat drill:Hole diameter Φ5.018

  • YG-1 flat drill: Hole diameteΦ5.008　Machining surface is smooth.

Chip condition

  • Japanese other companies drill

  • YG-1 flat drill

After 200 holes are drilled

Holes

  • Japanese other companies drill：Burrs are getting produced

  • YG-1 flat drill

Chip condition

  • Japanese other companies drill：Chips are getting longer

  • YG-1 flat drill：No big difference

After 500 holes are drilled

After 500 holes are drilled　Holes

  • Japanese other companies drill

  • YG-1 flat drill

Chip condition

  • Japanese other companies drill

  • YG-1 flat drill

After 1000 holes are drilled

Holes

  • Japanese other companies drill

  • YG-1 flat drill

Chip condition

  • Japanese other companies drill

  • YG-1 flat drill

edited by yuki takashima