Lathe installation DRX/DRZ Toolholder DRX 3. Center height adjustment a) No core remains / Core with Excessively Small Diameter This happens when the Inner Insert is set above the Center Height. In this case, adjustment is necessary since insert breakage will be probable at the center of the drill. (Fig. 7) (Fig. 7) Insert breakage near the center of the drill Initial InitialInstallation Improved ImprovedPosition PositionofofInner InnerInsert [How to adjust] (Inner insert (Inner insert Installation positioned positionedhigher higherthan thannormal) normal) 180˚ 180˚Rotation Rotation (Inner insertpositioned (Inner insert positioned Insert lower lower than than normal) normal) 1. Install the drill rotated 180˚. X-X ofof a-axxisis Inneredge Inner edge ththee Most problems will be solved by this method. (Fig. 8) Mmaac chin inee Center Centerofofspindle spindle Center of Center ofspindle spindle Inner Inneredge edge Inner edge Inner edge Inner edge Center Centerofofdrill drill Center of Center ofdrill drill Inner edge Inner edge Inner edge Zooming nearthe Zooming near thecenter center Zooming nearthe Zooming near the center center (Fig. 8) [How to adjust] adju CCeenntt Hig Asdt eerr H jues heeig her Mo m ntm igh 2. If the core diameter becomes too large after the above adjustment, install Center ofofspindle Center spindle vinthge t beyntm t tthoeo boyvin K lTo ol g the drill by rotating 90˚ counter-clockwise as shown in Fig. 9 (Outer insert Inner edge Inner edge LLo is positioned lower) and adjust the center height by moving the tool in 90˚ Rotation Rotation we r X-a xxisis the X-axis direction. (However, this makes it impossible to adjust the drill oofft hthee mMa achchin 90°° diameter) inee Inner edge edge Caution: In case of installing the drill in the reverse direction (Outer insert is positioned above), the hole diameter will become smaller, which may Drilling cause the drill body to interfere with the drilled hole. Center ofdrill Center of drill The best solution is to readjust the center position of the turret itself. Outer edge edge Inner edge edge Zooming near nearthe thecenter center Inner insert Insertpositioned positionedtoo toofar farbelow belowcenter center (Fig. 9) b) Core with excessively large diameter (More than 1mm) This occurs when the inner insert is excessively below the center. This condition causes poor chip evacuation and an adjustment is required. [How to adjust] Low CCe Aad nter hH eerr moo jussttm eeigighht M vvin ingg eenntt b t Install the drill rotating 90˚ as shown in Fig. 10. (Outer insert is tthhee byy Ttooo oll positioned on the upper side) and adjust the center height by Outer edge Outer edge Hig moving tool in the X-axis direction. Inner insert insertisispositioned positioned her excessively excessivelybelow belowthe center. 90˚ thecenter. 90˚ Rotation Rotation r XX-a-a (However, this makes it impossible to adjust the drill diameter) X-a-ax of th xxisis e mMa of th xisis acchhin inee e mMaa Caution: In case of installing the drill in the opposite direction (Outer 90°° cchhinine e Outer edge Outer edge insert is positioned lower), the hole diameter will become smaller, which may cause the drill body to interfere with the drilled hole. The best solution is to readjust the center position of the turret itself. Inner edge Inner edge Inner edge Inner edge (Fig. 10) K95