A rim drilling and milling machine has a base (10), a column (20), a turret (30), a saddle (40), a table (50), and a fixture unit (60). The fixture unit (60) has a foundation (61) and four clamping seats defined as two first clamping seats (63A) and two second clamping seats (63B). The first clamping seats (63A) are slidably mounted on the foundation (61) along a first radial direction, and are disposed at positions diametrically opposite in the first radial direction. The second clamping seats (63B) are slidably mounted on the foundation (61) along a second radial direction perpendicular to the first radial direction, and are disposed at positions diametrically opposite in the second radial direction. The four clamping seats can clamp at four equiangular points of a wheel rim.

A rim drilling and milling machine has a base (10), a column (20), a turret (30), a saddle (40), a table (50), and a fixture unit (60). The fixture unit (60) has a foundation (61) and four clamping seats defined as two first clamping seats (63A) and two second clamping seats (63B). The first clamping seats (63A) are slidably mounted on the foundation (61) along a first radial direction, and are disposed at positions diametrically opposite in the first radial direction. The second clamping seats (63B) are slidably mounted on the foundation (61) along a second radial direction perpendicular to the first radial direction, and are disposed at positions diametrically opposite in the second radial direction. The four clamping seats can clamp at four equiangular points of a wheel rim.

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).

According to one aspect of the present invention, there is provided an electrically controllable rotary pressure device, comprising: a motor for providing torque to rotary pressure means; a power control unit for supplying power to the motor; a central processing unit for controlling the power control unit; and a rotational speed sensor for measuring a rotational speed of the motor or the rotary pressure means, wherein the central processing unit comprises an abnormality detection unit for receiving the rotational speed from the rotational speed sensor, and wherein the abnormality detection unit transmits a control signal to the central processing unit when abnormality in the rotational speed is detected, so that the central processing unit interrupts the power supply of the power control unit.

According to one aspect of the present invention, there is provided an electrically controllable rotary pressure device, comprising: a motor for providing torque to rotary pressure means; a power control unit for supplying power to the motor; a central processing unit for controlling the power control unit; and a rotational speed sensor for measuring a rotational speed of the motor or the rotary pressure means, wherein the central processing unit comprises an abnormality detection unit for receiving the rotational speed from the rotational speed sensor, and wherein the abnormality detection unit transmits a control signal to the central processing unit when abnormality in the rotational speed is detected, so that the central processing unit interrupts the power supply of the power control unit.

A drill apparatus including an inner tube, an outer tube slidably received within the outer tube, and a pole extension mechanism. The pole extension mechanism comprises a pole advance gear having pole advance gear teeth, and a drive gear having drive gear teeth, the drive gear being coaxial with and fixedly attached to the pole advance gear so that the two gears rotate together. The pole advance gear teeth are received in aligned spaced apart apertures in the outer tube. The pole extension mechanism further includes a lever arm having an end pivotally mounted on the support collar at a lever arm pivot point coaxial with the drive gear and the pole advance gear. The pole extension mechanism further includes a stop pawl pivotally mounted on the support collar for rotation between where the stop pawl engages the drive gear and prevents downward movement of the pole inner tube relative to the pole outer tube, and where the stop pawl does not engage the drive gear, and a drive pawl piece pivotally mounted on the lever arm near the lever arm end.

The invention relates to a method and an arrangement for introducing boreholes into a surface of a workpiece (W) mounted in a stationary manner using a boring tool which is attached to the end face of an articulated-arm robot (KR) and which can be spatially positioned by said robot. The method has the following method steps: positioning the articulated-arm robot-guided boring tool at a spatial position which lies opposite a specified machining location on the workpiece surface at a specified distance therefrom, producing a rigid mechanical connection which supports the end face of the articulated-arm robot (KR) on the workpiece and which can be released from the workpiece surface, and machining the surface by moving the boring tool towards the machining location and subsequently engaging the boring tool with the workpiece (W) at the machining location on the workpiece surface while the end face of the articulated-arm robot (KR) is connected to the workpiece. The invention is characterized by the combination of the following method steps: the boring tool is moved towards the workpiece (W) by means of an NC advancing unit attached to the end face of the articulated-arm robot (KR), the boring process is monitored on the basis of information obtained using a sensor system which detects the position of the boring tool relative to the workpiece surface and which is attached to the end face of the articulated-arm robot (KR), and the boring process is terminated upon reaching a specified boring depth.

The invention relates to a method and an arrangement for introducing boreholes into a surface of a workpiece (W) mounted in a stationary manner using a boring tool which is attached to the end face of an articulated-arm robot (KR) and which can be spatially positioned by said robot. The method has the following method steps: positioning the articulated-arm robot-guided boring tool at a spatial position which lies opposite a specified machining location on the workpiece surface at a specified distance therefrom, producing a rigid mechanical connection which supports the end face of the articulated-arm robot (KR) on the workpiece and which can be released from the workpiece surface, and machining the surface by moving the boring tool towards the machining location and subsequently engaging the boring tool with the workpiece (W) at the machining location on the workpiece surface while the end face of the articulated-arm robot (KR) is connected to the workpiece. The invention is characterized by the combination of the following method steps: the boring tool is moved towards the workpiece (W) by means of an NC advancing unit attached to the end face of the articulated-arm robot (KR), the boring process is monitored on the basis of information obtained using a sensor system which detects the position of the boring tool relative to the workpiece surface and which is attached to the end face of the articulated-arm robot (KR), and the boring process is terminated upon reaching a specified boring depth.

A drill assembly and method is provided for enlarging an injector of a reactor. The drill assembly includes an elongated shaft attached to a piloted drill bit including a pilot portion distal from and extending colinearly with the elongated shaft and a cutting portion proximal the elongated shaft and positioned between the pilot portion and the elongated shaft, wherein the cutting portion includes at least one cutting edge extending radially from a center axis of rotation beyond an outer surface of the pilot portion; and a drive device adapted to rotate the elongated shaft about the axis of rotation. The method includes inserting the pilot portion into an injector; and cutting away a portion of an inner surface of the injector with the cutting portion.