The invention refers to a pneumatically driven apparatus, in particular a hand guided and/or hand held pneumatic power tool (1), comprising a pneumatic rotary vane motor (100), a working element (9) and a gear arrangement functionally located between the motor (100) and the working element (9) for transmitting a rotational movement and torque. The motor (100) comprises a housing defining a cylindrical chamber (114) extending along a cylinder axis, and a cylindrical rotor (104) located in the chamber (114) and extending along and rotatable about an axis (60) running parallel to the cylinder axis, the rotor (104) comprising a plurality of radially movable vanes (108) forced radially outwards during rotation of the rotor (104). It is suggested that the gear arrangement is a magnetic gear arrangement (20) and that the rotor (104) of the motor (100) comprises permanent magnets (56) attached thereto between the vanes (108) thereby making the rotor (104) of the pneumatic motor (100) form one of the rotating components (52; 54) of the magnetic gear arrangement (20).

A live tool system having a live tool and a collar surrounding a rotating shaft or a rotating cutting tool of the live tool. The collar houses at least one sensor capable of monitoring an operating condition proximate to the cutting tool during a cutting operation. Example operating conditions including temperature and vibration. The system also includes a wireless transmitter in communication with the at least one sensor for transmitting a signal for use by a machining center controller.

A live tool system having a live tool and a collar surrounding a rotating shaft or a rotating cutting tool of the live tool. The collar houses at least one sensor capable of monitoring an operating condition proximate to the cutting tool during a cutting operation. Example operating conditions including temperature and vibration. The system also includes a wireless transmitter in communication with the at least one sensor for transmitting a signal for use by a machining center controller.

The invention relates to a compressed gas-operated apparatus, which comprises a tool unit and a receiving unit for accommodating the tool unit, wherein the tool unit comprises a stator and a rotor that is rotatingly drivable about a rotational axis relative to the stator while being applied with compressed gas, wherein the tool unit is deflectable relative to the receiving unit from a starting position that is predeterminable by means of the receiving unit into one or more deflection positions. In order to provide a compressed gas-operated apparatus of that type, with which an increased process security can be ensured, it is proposed in accordance with the invention that the apparatus comprises a sensor device for determining a deflection state of the tool unit relative to the receiving unit. The invention also relates to a compressed gas machining system.

The invention relates to a compressed gas-operated apparatus, which comprises a tool unit and a receiving unit for accommodating the tool unit, wherein the tool unit comprises a stator and a rotor that is rotatingly drivable about a rotational axis relative to the stator while being applied with compressed gas, wherein the tool unit is deflectable relative to the receiving unit from a starting position that is predeterminable by means of the receiving unit into one or more deflection positions. In order to provide a compressed gas-operated apparatus of that type, with which an increased process security can be ensured, it is proposed in accordance with the invention that the apparatus comprises a sensor device for determining a deflection state of the tool unit relative to the receiving unit. The invention also relates to a compressed gas machining system.

A precision pneumatic drill spindle and method provides reduced spin axis error and increased rate of forming holes in a microelectronic substrate. The spindle includes a press-fit collar that accepts drill bits and incorporates turbine blades around the collar, which is rotated by directing pressurized air through a number of nozzles distributed around the collar within a housing of the spindle. The collar is supported by air bearings above and below the collar. The turbine blades may be provided by concavities in the collar forming a Pelton wheel type rotation system that concentrates the air flow to improve energy transfer from the pressurized air directed by the nozzles to the collar, increasing the rotation rate of the collar. Exit air may be directed downward toward the tip of the drill bit by inclined channels within the lower air bushing assembly, improving the debris removal rate.

A precision pneumatic drill spindle and method provides reduced spin axis error and increased rate of forming holes in a microelectronic substrate. The spindle includes a press-fit collar that accepts drill bits and incorporates turbine blades around the collar, which is rotated by directing pressurized air through a number of nozzles distributed around the collar within a housing of the spindle. The collar is supported by air bearings above and below the collar. The turbine blades may be provided by concavities in the collar forming a Pelton wheel type rotation system that concentrates the air flow to improve energy transfer from the pressurized air directed by the nozzles to the collar, increasing the rotation rate of the collar. Exit air may be directed downward toward the tip of the drill bit by inclined channels within the lower air bushing assembly, improving the debris removal rate.

A turbine power unit for a power tool having a turbine housing with an interior space configured to receive therein a fluid powered turbine supported for rotation on a bearing within the turbine housing. A service opening through the turbine housing into the interior space thereof, the service opening configured to permit installation and removal of a bearing into and out of the interior space of the turbine housing. A removable cover releasably securable to the turbine housing over the service opening and transitionable between an open configuration in which a bearing can be installed into and removed from the interior space of the turbine housing through the service opening and a closed configuration in which an installed bearing within the interior space is secured for operation in the turbine housing.

A turbine power unit for a power tool having a turbine housing with an interior space configured to receive therein a fluid powered turbine supported for rotation on a bearing within the turbine housing. A service opening through the turbine housing into the interior space thereof, the service opening configured to permit installation and removal of a bearing into and out of the interior space of the turbine housing. A removable cover releasably securable to the turbine housing over the service opening and transitionable between an open configuration in which a bearing can be installed into and removed from the interior space of the turbine housing through the service opening and a closed configuration in which an installed bearing within the interior space is secured for operation in the turbine housing.

A fluid-powered high-speed spindle (100) having a longitudinal axis (A) defining an upper end defined by a shank and a lower end accepting a tool. The spindle includes a body (120), a rotatable shaft (530) supported by at least one bearing (508) within the body (120), a seal housing (150) connected to the body (120) at the lower end thereof, a cover (180) connected to the seal housing (150) at the lower end thereof, a fluid channel system for directing fluid from an entry port (102) to a nozzle (576) for turning a turbine (570) attached to the shaft (530); and a flinger (660) attached to the shaft (530) and positioned above the turbine (570). The flinger (660) and the seal housing (150) combine to form a non-contact seal (900) configured to impede the flow of fluid toward the at least one bearing (508).