A method for the grinding finish machining of an already toothed gearwheel workpiece in an NC-controlled machine tool, comprising the following steps: a. providing the gearwheel workpiece in the machine tool, b. providing a first grinding tool in the machine tool, c. providing a second grinding tool in the machine tool, d. grinding machining of at least one tooth flank of the gearwheel workpiece using the first grinding tool, e. grinding machining of at least one tooth flank in the transition region to the tooth head of the gearwheel workpiece using the second grinding tool in the machine tool to generate a head edge rounding on the gearwheel workpiece, f. further grinding machining of at least one tooth flank of the gearwheel workpiece using the first grinding tool and/or the second grinding tool in the machine tool.

Loopback rolls which can transfer and guide a polishing tape (T) along a perimeter of a pressure contact roll (R) is provided, the pressure contact roll having a tapered peripheral edge having a top edge and a pair of slant edge faces formed on a periphery of the pressure contact roll, by which the polishing tape can be bent into a substantially V-shape in cross section, and a switchable pressure contact mechanism is switchably provided which pressure contacts each of bent portions of the polishing tape, which is bent into the substantially V-shape in cross section by the tapered peripheral edge, to one tooth face (B1) or the other tooth face of a worm.

Loopback rolls which can transfer and guide a polishing tape (T) along a perimeter of a pressure contact roll (R) is provided, the pressure contact roll having a tapered peripheral edge having a top edge and a pair of slant edge faces formed on a periphery of the pressure contact roll, by which the polishing tape can be bent into a substantially V-shape in cross section, and a switchable pressure contact mechanism is switchably provided which pressure contacts each of bent portions of the polishing tape, which is bent into the substantially V-shape in cross section by the tapered peripheral edge, to one tooth face (B1) or the other tooth face of a worm.

A method for automatic process monitoring during continuous generating grinding of pre-toothed workpieces, which permit early detection of grinding wheel breakouts. A generating grinding machine is used to machine multiple workpieces by clamping them onto at least one workpiece spindle and successively moving them into generating engagement with a grinding wheel. At least one measured variable is monitored during the machining to indicate if a grinding wheel breakout exists. If a grinding wheel breakout is indicated, the grinding wheel is examined automatically by moving a dressing tool over the tip region of the grinding wheel and generating a contact signal. A breakout is determined by analyzing the contact signal and, if present, the grinding wheel is dressed as often as necessary in order to eliminate the grinding wheel breakout. Alternatively, the checking of the grinding wheel is carried out directly at the first dressing stroke.

The presented disclosure provides a gear processing apparatus, including a base, a bearing unit, a grinding unit, and a control unit. The bearing unit and the grinding unit are arranged on the base. The bearing unit is configured to carry the gear. The grinding unit includes a driving module and a grinding member connecting to the driving module. The grinding member can perform a motion of a plurality of axial directions relative to the bearing unit to contact the tooth surface of the gear. The control unit is electrically connected to the bearing unit and the grinding unit. The control unit is configured to control the driving module to apply additional motion to at least one of the plurality of axial directions during the grinding process to drive the grinding member to grind the tooth surface of the gear.

The presented disclosure provides a gear processing apparatus, including a base, a bearing unit, a grinding unit, and a control unit. The bearing unit and the grinding unit are arranged on the base. The bearing unit is configured to carry the gear. The grinding unit includes a driving module and a grinding member connecting to the driving module. The grinding member can perform a motion of a plurality of axial directions relative to the bearing unit to contact the tooth surface of the gear. The control unit is electrically connected to the bearing unit and the grinding unit. The control unit is configured to control the driving module to apply additional motion to at least one of the plurality of axial directions during the grinding process to drive the grinding member to grind the tooth surface of the gear.

A method for grinding a toothing of a workpiece by a profile grinding wheel. The workpiece each have an axis of rotation. The grinding wheel has a center which lies on the axis of rotation of the grinding wheel and in the middle of the axial extent of the grinding wheel. The workpiece has an end face at least in an axial end region of the toothing or of the profile. The method includes the steps of: a) grinding the tooth gaps by the profile grinding wheel; b) grinding chamfers in the region of the axial end of the tooth gaps by the grinding wheel. The grinding wheel takes up a position in which it is arranged so that an axial end of the tooth gap is in contact with the grinding wheel. In projection onto a plane that contains the axis of rotation of the workpiece and the center of the grinding wheel, an angle of between 20° and 70° is enclosed between the axis of rotation of the workpiece and the connecting line between the axial end of the tooth gap and the center.

A method for grinding a toothing of a workpiece by a profile grinding wheel. The workpiece each have an axis of rotation. The grinding wheel has a center which lies on the axis of rotation of the grinding wheel and in the middle of the axial extent of the grinding wheel. The workpiece has an end face at least in an axial end region of the toothing or of the profile. The method includes the steps of: a) grinding the tooth gaps by the profile grinding wheel; b) grinding chamfers in the region of the axial end of the tooth gaps by the grinding wheel. The grinding wheel takes up a position in which it is arranged so that an axial end of the tooth gap is in contact with the grinding wheel. In projection onto a plane that contains the axis of rotation of the workpiece and the center of the grinding wheel, an angle of between 20° and 70° is enclosed between the axis of rotation of the workpiece and the connecting line between the axial end of the tooth gap and the center.

Process of grinding and polishing flank surfaces (40) of teeth (50) of toothed wheels (60), comprising the steps of a) providing a grinding device (6), a polishing device (7), a dynamic positioning device (8) and a toothed wheel (60); b) having the grinding device (6) grind the toothed wheel (60); c) removing the toothed wheel (60) from the grinding device (6); d) having the dynamic positioning device (8) bring the flank surface (40) in contact with a polishing body (80) of the polishing device (7) to polish the flank surface; e) having the dynamic positioning device (8) dynamically adjust position and attitude of the toothed wheel (60) relative to the polishing body (80), or having the dynamic positioning device (8) dynamically adjust position and attitude of the polishing body (80) relative to the toothed wheel (60), such that the flank surface is polished by the polishing body. The dynamic positioning device (8) may be a robot.

Process of grinding and polishing flank surfaces (40) of teeth (50) of toothed wheels (60), comprising the steps of a) providing a grinding device (6), a polishing device (7), a dynamic positioning device (8) and a toothed wheel (60); b) having the grinding device (6) grind the toothed wheel (60); c) removing the toothed wheel (60) from the grinding device (6); d) having the dynamic positioning device (8) bring the flank surface (40) in contact with a polishing body (80) of the polishing device (7) to polish the flank surface; e) having the dynamic positioning device (8) dynamically adjust position and attitude of the toothed wheel (60) relative to the polishing body (80), or having the dynamic positioning device (8) dynamically adjust position and attitude of the polishing body (80) relative to the toothed wheel (60), such that the flank surface is polished by the polishing body. The dynamic positioning device (8) may be a robot.