The invention relates to a device (1) for drilling holes in the axial and radial direction of a blade root of a wind turbine, wherein the device comprises: a first base (2), which is to be stationary positioned on the ground; a second base (3), which is moveably mounted to the first base (2) and movable along a first direction; first drive means for positioning the second base (3) along the first direction; a rotary arm (4), which is pivotally mounted to the second base (3) around a main axis (5); second drive means for rotating the rotary arm (4) around the main axis (5); wherein the rotary arm (4) comprises a guide track (7) which extends from a first outer end to a second outer end of the rotary arm (4) thereby passing the main axis (5); first drilling means (8) moveably arranged on the guide track (7), comprising a first drilling tool (8-1) for drilling holes in a second direction (8-2), which second direction (8-2) is perpendicular to the main axis (5) andthird drive means for positioning the first drilling means (8) along the guide track (7); second drilling means (9) mounted on the rotary arm (4), comprising a second drilling tool for drilling holes in a third direction (9-2), which third direction (9-2) is parallel to the main axis (5).

The invention relates to a device (1) for drilling holes in the axial and radial direction of a blade root of a wind turbine, wherein the device comprises:a first base (2), which is to be stationary positioned on the ground;a second base (3), which is moveably mounted to the first base (2) and movable along a first direction;first drive means for positioning the second base (3) along the first direction;a rotary arm (4), which is pivotally mounted to the second base (3) around a main axis (5);second drive means for rotating the rotary arm (4) around the main axis (5);wherein the rotary arm (4) comprises a guide track (7) which extends from a first outer end to a second outer end of the rotary arm (4) thereby passing the main axis (5);first drilling means (8) moveably arranged on the guide track (7), comprising a first drilling tool (8-1) for drilling holes in a second direction (8-2), which second direction (8-2) is perpendicular to the main axis (5) andthird drive means for positioning the first drilling means (8) along the guide track (7);second drilling means (9) mounted on the rotary arm (4), comprising a second drilling tool for drilling holes in a third direction (9-2), which third direction (9-2) is parallel to the main axis (5).

Disclosed is a CNC machining apparatus (100). The CNC machining apparatus (100) comprises a first moving plate (40) configured in X axis on a stationary base (30), a second moving plate (50) mounted in Y axis on an upper portion of a support member (20), a third moving plate (60) mounted in Z axis on the second moving plate (50). The third moving plate (60) includes having a spindle (55) mounted thereon, wherein the spindle (55) includes a cutting tool (53) configured therein. The CNC machining apparatus (100) also comprises a fourth moving frame (70) configured in A axis on the first moving plate (40), a fifth moving frame (80) configured in B axis on the Z axis moving plate (60), and a sixth moving frame (90) configured in Z1 axis in the B axis plate (80). The spindle (55) moves vertically up and down on Z axis, swings around B axis pivot and also moves up and down in Z1 axis that is mounted on B axis.