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Category: Processing conditions and troubleshooting

Results:13 ,Showing: 1 - 10

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  • What spindle speed should be used whe...

    As a guideline, reduce the spindle speed to 500 rpm or less when inserting a long drill (whether carbide or HSS) into a guide hole. For very long drills, suc... 詳細表示

    • No：17887
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/11 10:42

  • What does drill feed rate (mm/rev) mean?

    It indicates how many millimeters the drill advances per one revolution. In OSG’s drill catalog, recommended feed rates (mm/rev) are listed as ranges for ma... 詳細表示

    • No：17886
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/11 10:19

  • What causes hole enlargement during d...

    Hole enlargement occurs due to tool runout or chattering during machining. In addition, runout at the time of tool installation affects both hole diameter a... 詳細表示

    • No：17876
    • Publication Date：2025/09/05 11:11
    • Updated Date：2026/01/16 15:49

  • Is there a tool to remove a broken tap?

    Yes. Please use the “EX-H-DRL” Tap Removal Drill (also known as the Hard Drill). This drill is designed to crush the core of the broken tap and remove it. M... 詳細表示

    • No：17875
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/10 13:04

  • What is the feed rate of a drill?

    Feed rate is how far the tool moves per minute. The unit of feed velocity (Vf) of the drill is (mm/min). The feed rate can be calculated by multiplying the... 詳細表示

    • No：18008
    • Publication Date：2025/09/05 11:11
    • Updated Date：2026/01/15 13:30

  • What is the maximum hole depth that c...

    A drill removes material while continuously evacuating chips through its flutes. It is essential that chips are discharged outside the flutes during drilling... 詳細表示

    • No：17931
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/11 11:00

  • Do you need to drill a pilot hole bef...

    Do you need to Pilot hole for large drilling? If you have enough mechanical horsepower, you don't need Pilot hole. When machine horsepower is insufficient,... 詳細表示

    • No：17938
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/05 11:46

  • Is a centering process always necessa...

    Centering is performed to improve hole position accuracy and to suppress unstable behavior at the hole entrance during machining. However, if there is no st... 詳細表示

    • No：17879
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/10 16:36

  • Why does a drilled hole become polygo...

    It is likely caused by drill runout during machining. Possible Causes ① Runout when mounting the drill 　Countermeasure: Keep mounting runout within 20 μm ... 詳細表示

    • No：17881
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/11 10:12

  • Is there a formula for calculating th...

    Experimental Formulas for Estimating Thrust Force, Torque, and Required Power When considering the clamping method or fixture design for a workpiece, it is ... 詳細表示

    • No：17877
    • Publication Date：2025/09/05 11:11
    • Updated Date：2025/12/10 15:44

Results:13 ,Showing: 1 - 10

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