A carrier bush (15) fits on bearings in a drive casing (11) so as to rotate. A drive shaft (13) rotates on bearings in the carrier bush. A tool mount (16A,16B) holds processing tools. A vibration-stimulating device generates vibration overlay for the tool mount. An independent claim is also included for a tool with a drive device.

The conveyor has a driver, a useful mass and a counter mass which can be brought into a mutually oppositely oscillating rotational vibrating movement about a central axis of rotation by the driver. The useful mass and the counter mass are mounted so that they can be moved with respect to one another over spring arrangements which are distributed about an axis of rotation. A portion of the useful mass is a pot which is located detachably and exchangeable. The moments of inertia of the useful mass and of the counter mass are in a defined ratio to one another. The pot, which can be mounted exchangeably, is designed so that the moment of inertia of the useful mass and, with that, the ratio of the moments of inertia remain essentially unchanged. The moments of inertia are identical or that the moment of inertia of the useful mass is larger than that of the counter mass.

The device (1) comprises a base (2), carrying a servo motor (3) and attached to the frame of a machine center. A carriage (6) with a vertical shaft (8) on top can be moved on two telescopically arranged rails (4,5) joined horizontally to the base (2). The tool holding elements (16,17) are positioned at the upper end of the shaft (8) and can be fixed with a locking unit (18). A control plate (12) is located at the second rail (5) acting in combination with a guiding roll (10) in order to facilitate a swivel motion of the tool carrier (15).

The device has a base plate (2) with socket for holding a side wall (4) and fixing means for rollers (5, 6) mounted on assembly plates (20). The socket has a further preferably iron plate (3) which is mounted fixed with the assembly plate on the base plate. The iron plate, assembly plate and base plate can have corresponding holes and grooves for screw fixing.

The device for producing microstructures has a rotating driven spindle (12) and a holder for clamping a workpiece (16). A fast drive is coupled to a tool (32) over a guidance arrangement, which permits adjustment of the tool in an axial direction of the fast drive against a return force. The drive has high rigidity in the plane perpendicular to the drive direction. An independent claim is made for an actuator (30) for moving the tool of a turning machine (10) to produce a micro-structured surface in a workpiece, especially using a piezoelectric drive.

The device has an armature (4) moving linearly in relation to a stator (2). An electrodynamic linear direct drive system (6) with permanent magnets arranged one on stator and other on armature, where the armature subjected to a setting force. A fluid power drive system (7) provides fluid actuation of the armature for the production of another setting force that differs from the previous force.

The assembly has a housing defining a handle (4) and accommodating a motor for actuating the output member of a power tool e.g. drill bit or jigsaw blade. A flexible sheet (8) is mounted to the surface of the handle and has a series of protrusions (10) to be engaged by the hand of a user. The protrusions retain a gaseous vibration damping material e.g. air between flexible sheet and surface of handle.

The device (4) has a spiral brush (40) that is carried by a drive shaft (41) for being rotated around a horizontal axis. The device slides against an emptying device (3) for being rotated around a vertical axis. The brush due to its rotation intercepts and ejects a residual product volume towards a central bunker (102).

A power tool (10) is described which has several modes of operation, such as drilling and screw driving modes. A clutch is provided with various settings for adjusting the torque at which the clutch interrupts power to a spindle (18). Furthermore, a two speed gearbox (16) is provided for adjusting the speed of the spindle (18). All of these variables are controllable from a single adjustment member or collar (26) thereby reducing necessary decisions needed to be made by an operator for a particular job in hand. For instance, when an operator wants the tool (10) to operate in a screw driving mode, the gearbox (16) is automatically set to drive the spindle (18) at a low speed with the clutch being operable to interrupt drive when a torque force applied to the spindle (18) exceeds a threshold value. Furthermore, if the tool (10) is required to operate in a drilling mode, the gearbox (16) is automatically switched to drive the spindle (18) at a higher speed and the clutch is automatically rendered inoperable.

A Crankshaft bearing assembly for supporting a crankshaft for rotation about a crankshaft axis within an engine having an aluminum engine block, the crankshaft bearing assembly including at least one crankshaft bearing divided into a first half and a second half, the first half being integral with the engine block, and the second half being a bearing cap connectable to the engine block. The bearing cap is made of an aluminum alloy having a tensile strength higher than the tensile strength of the engine block.