A tool presetting and/or tool measuring apparatus device includes a carrier unit and a spindle unit, in particular motor spindle unit, which is supported by the carrier unit, which is at least configured for a rotation of an object inserted in the spindle unit, in particular a tool and/or a tool holder, around a spindle axis of the spindle unit and which comprises at least one drive unit for generating the rotation movement of the object, wherein the spindle unit includes a coupling unit which is configured, in particular for the purpose of changing a maximally achievable spindle torque, to drive the spindle unit in at least two differing modes.

A method to control a power tool, especially a core drill, including a motor as the drive for the power tool, a control unit, a power display, a transmission having at least a first gear and a second gear, a first sensor to detect the rotational speed of at least one component of the transmission and a second sensor to detect the rotational speed of the motor. The method includes the following steps: ascertaining a first rotational speed of the at least one component of the transmission when the transmission has been put into a gear, ascertaining a first rotational speed of the motor when the transmission has been put into a gear, ascertaining the selection of the gear on the basis of a first prescribed ratio of the first rotational speed of the at least one component of the transmission and of the first rotational speed of the motor on the basis of a look-up table, and setting the limit value of the power display on the basis of the look-up table as a function of the gear that has been selected. A power tool for purposes of using the method.

A machining unit for a machine tool and machine tool having such a machining unit comprises a head carrier that is attached to the machine tool, a pivot head held on the head carrier in such a way that the pivot head can be pivoted about a pivot axis, a working spindle, which is arranged on the pivot head and has a spindle axis that is tilted in relation to the pivot axis, a spindle motor, which is arranged in the head carrier and has a drive shaft arranged parallel to the pivot axis, and a drive transmission for transmitting the rotational motion of the drive shaft of the spindle motor to the working spindle, wherein the drive transmission has a transmission stage that can be shifted. The pivot head has a shifting transmission shaft that is oriented coaxially to the pivot axis of the pivot head, wherein the transmission stage that can be shifted has a hollow shaft movably supported on the shifting transmission shaft of the pivot head.

A machine tool includes: a rotating portion that rotates around a first axis; a first arm that extends from the rotating portion; a second arm that is connected to the first arm and supports an end effector; a single power source that is configured to supply power to the rotating portion and the second arm; and a switching mechanism that is configured to switch a power supply destination from the power source from one of the rotating portion or the second arm to the other, wherein the second arm is configured to rotate around a second axis that intersects the first axis.

The present invention provides, in an embodiment, a gear-shifting structure of power equipment, the gear-shifting structure comprising: first and second gears having shafts concentric with a first shaft, respectively, the first and second gears being positioned at different locations along the axial direction of the first shaft, the first and second gears having protrusions formed thereon, respectively, and the first and second gears freely rotating with regard to the first shaft; a clutch disposed concentrically with the first shaft between the first and second gears, the clutch being spline-coupled to the first shaft, and the clutch having engaging members formed thereon so as to protrude toward the first and second gears, respectively; an adjustment member configured to move the clutch toward the first gear or the second gear; a second shaft; and third and fourth gears having shafts concentric with the second shaft, respectively, the third and fourth gears being disposed to engage with the first and second gears and to rotate together with the second shaft. The engaging members of the clutch engage with the protrusion of the first gear or the second gear by means of the adjustment member.

A transmission structure of a woodworking lathe contains: a case, a driven gear, a first gear set, a second gear set, and an adjustment lever. The case includes a transmission shaft, a variable speed shaft, and a driven shaft. The driven gear is fixed on the variable speed shaft and meshes with the transmission gear. The first gear set contains a first gear and a third gear which is coaxial with the first gear. Diameters of the first gear and the third gear are different. The second gear set is disposed on the variable speed shaft and contains a second gear and a fourth gear, a diameter of the second gear corresponds to a diameter of the first gear, and a diameter of the fourth gear corresponds to a diameter of the third gear. The adjustment lever is defined between the second gear and the fourth gear.

A tool presetting and/or tool measuring apparatus device includes a carrier unit and a spindle unit, in particular motor spindle unit, which is supported by the carrier unit, which is at least configured for a rotation of an object inserted in the spindle unit, in particular a tool and/or a tool holder, around a spindle axis of the spindle unit and which comprises at least one drive unit for generating the rotation movement of the object the spindle unit includes a coupling unit which is configured, in particular for the purpose of changing a maximally achievable spindle torque, to drive the spindle unit in at least two differing modes.

The present disclosure relates to an apparatus for operating a main shaft of a machine tool, the apparatus including: an input unit configured to transmit power for operating the main shaft; an output unit disposed in parallel with the input unit and configured to operate the main shaft with the power from the input unit; and a transmission unit disposed in parallel with the input unit and the output unit so as to be capable of rectilinearly reciprocating between the input unit and the output unit and configured to transmit the power from the input unit to the output unit, wherein the main shaft is capable of operating in a high-speed mode, a low-speed mode, or a C-axis mode in accordance with the rectilinear reciprocation of the transmission unit.

A transmission structure of a drilling machine contains: a housing, a drive shaft, a drive gear, a guide gear, a speed change gear assembly, a driven gear assembly, and a control knob. The housing include a first accommodation groove for housing the drive shaft, a second accommodation groove for accommodating the guide shaft, a third accommodation groove for housing the speed shaft, and a fourth accommodation groove for accommodating the driven shaft. The drive gear is connected on the drive shaft, and the guide gear is coupled on the guide shaft and meshes with the drive gear. The speed change gear assembly includes a connection gear and at least two speed change gears. The driven gear assembly includes at least two driven gears corresponding to at least two speed change gears respectively. The control knob configured to drive the driven gear assembly to move upward and downward.

The present disclosure relates to an apparatus for operating a main shaft of a machine tool, the apparatus including: an input unit configured to transmit power for operating the main shaft; an output unit disposed in parallel with the input unit and configured to operate the main shaft with the power from the input unit; and a transmission unit disposed in parallel with the input unit and the output unit so as to be capable of rectilinearly reciprocating between the input unit and the output unit and configured to transmit the power from the input unit to the output unit, wherein the main shaft is capable of operating in a high-speed mode, a low-speed mode, or a C-axis mode in accordance with the rectilinear reciprocation of the transmission unit.