A method and apparatus for carrying out contact measurement on at least one tooth flank of a gearwheel workpiece including the steps of: predetermining or defining a maximum region relating to the tooth flank, predetermining or defining a critical region relating to the tooth flank that overlaps the maximum region at least in part, executing relative movements of a probe of a measuring apparatus to guide the probe along the tooth flank to obtain actual measured values with a first resolution for a plurality of locations on the tooth flank within the maximum region, and obtain actual measured values with a second resolution for a plurality of locations on the tooth flank within the critical region, wherein the second resolution is higher than the first resolution.

An assembly for acoustically influencing toothed wheels, including at least one first toothed wheel having teeth and one second toothed wheel having teeth, wherein the teeth have flanks, wherein at least one flank of a tooth of the first toothed wheel can be engaged with a flank of a tooth of the second toothed wheel, wherein at least one flank of a tooth of the first toothed wheel forms a contact zone or, in the ideal case, a contact line with an engaging flank of a tooth of a second toothed wheel, wherein the contact zone or the contact line is formed at an angle α.sub.Aq, in particular between 5° and 85° or between 95° and 175°, in relation to an axis of an undulation, a microangle distribution, and/or a microangle periodicity of the engaging flank of the tooth of the second toothed wheel.

A roughness measurement sensor (15), comprising a sliding element and a sensor tip (15.4), wherein the sensor tip (15.4) is arranged in the region of the extremal end of a sensor arm (13.1) which has a longitudinal extension parallel to a longitudinal axis (LA) and is mounted in a lever-like manner. In some embodiments, the sliding element is formed in the manner of a skid (15.3), and the skid (15.3) lies, as viewed in a sectional plane (SE), perpendicularly to the longitudinal axis (LA), laterally adjacent to the sensor tip (15.4).

A gear measurement method and a gear measurement apparatus capable of evaluating meshing and fitting of a gear are provided. A measurement method for a gear includes a measurement step of measuring an actual movement locus of a ball that is moved along a tooth groove of the gear as a shape evaluation index for the gear. In the case of a VGR rack, tooth surfaces of rack teeth are constituted of curved surfaces. Thus, a reference pin for use in OPD cannot be disposed so as to be in line contact with the tooth surfaces, and the rack teeth cannot be measured. However, the ball can be disposed so as to be in point contact with the tooth surfaces, which enables a measurement of the rack teeth.

A device for inspecting a profiled work pieces has a toothing, the profile metrologically detectable by the probe element of a profile probe. The profile and the profile probe are moved relative to one another and at right angles or tangentially to the measuring plane of the profile probe. The device measures work pieces having different numbers of teeth, modules and widths, directly after processing, on site and quickly, for accuracy and deviations, without special profiles for the toothing. The probe element of the profile probe can be applied to the profile of the work piece, can be applied to the profile edge of the work piece that is moving away from the probe element by the probe radius of the probe element, and subsequently, by the lateral surface of the probe element facing the profile edge opposite thereof, is configured so the probe element can be displaced from the profile gap.

A method for extracting a gear tooth profile edge based on an engagement-pixel image edge tracking method includes defining a transmission ratio relationship between a cutter and an envelope tooth profile, setting a cutter profile step size and an envelope step size, acquiring instantaneous contact images at different engaging times, and performing a binarization processing on each curve envelope cluster image; sweeping a boundary of an envelope curve cluster, acquiring pixel points of the edge; preliminarily tracking a tooth profile edge, and then performing a secondary extraction and compensation on the pixel points; calibrating coordinates of a cutter profile; extracting a pixel coordinate of an instantaneous engaging point; converting the pixel points among different instantaneous engaging images; extracting a final tooth profile coordinate of the gear, and performing a tooth shape error analysis and a contact line error analysis.

A method for grinding or polishing a gearwheel in a grinding or polishing machine, wherein the machine has two workpiece spindles for receiving a workpiece and a grinding or polishing spindle with a grinding or polishing tool. The method has the steps of: a) Grinding or polishing a first workpiece on a workpiece spindle; b) In a temporally parallel manner to the grinding or polishing of the first workpiece: Receiving a second workpiece on the further workpiece spindle and measuring the toothing of the workpiece to determine the positions of the tooth gaps, the measurement including scanning the tooth or profile flanks of at least one tooth by a tactile measuring element or by contactless measuring, in order to determine the effective oversize on the tooth flanks; c) Following completion of grinding or polishing the first workpiece: Grinding or polishing the second workpiece on the further workpiece spindle based on the determined positions of the tooth gaps and/or the measured effective oversize on the tooth.

A method includes the following steps: providing a toothed component on a coordinate measuring machine, wherein the measuring machine has first and second sensors for measuring geometric features of the toothed component, and movement axes for executing a measuring movement for acquiring measured values on the toothed component; first measuring of a geometric feature of the toothed component using the first and/or second sensor. A first relative measuring movement is executed to travel along a first measuring path, wherein one or more first measured values are acquired to determine the geometric feature. The method also includes the step of second measuring of a geometric feature of the toothed component using the first and/or second sensor, wherein a second relative measuring movement is executed to travel along a second measuring path; wherein an evaluation of the second measurement takes place in consideration of an axis position known from the first measurement.

A device and a method can be utilized to measure concentricity of an internal toothing of a component. Such a device may include a determination segment, which can determine a concentricity deviation, that includes a spindle unit comprising a tapping spindle with a gauge gear wheel arranged thereon and intended for tapping the concentricity of the internal toothing, and an output spindle for transmitting the tapped concentricity from the tapping spindle to a measuring unit. The output spindle may be arranged directly or indirectly on the tapping spindle. A spindle holder may hold and position the tapping spindle, the output spindle, or the spindle unit. An adjusting element may position the gauge gear wheel, and the measuring unit may compare the tapped concentricity with reference values.

A profile measuring machine is for measuring a profile of a workpiece having a plurality of known-profile portions and a plurality of unknown-profile portions, the known-profile portions being cyclically arranged via the respective unknown-profile portions. The profile measuring machine includes: a scanning probe having a contact piece capable of being in contact with the workpiece; a drive mechanism for moving the scanning probe; an autonomous scanning measurement unit for controlling the drive mechanism to perform the autonomous scanning measurement; a measurement-path calculator for calculating a movement path of the scanning probe; and a nominal-value scanning measurement unit for controlling the drive mechanism to move the scanning probe along the movement path to perform a nominal-value scanning measurement. The measurement-path calculator calculates the movement path for the workpiece based on measurement results of the unknown-profile portions measured by the autonomous scanning measurement unit and design data of the known-profile portions.