Method for establishing tooth grinding method and tooth grinding method

Abstract

The invention relates to a method for establishing a tooth grinding method, comprising determining a shaft movement and / or geometry of a grinding tool for a grinding stroke by means of a first mass control circuit by repeating the following steps: grinding, measuring and correcting a pre-final target geometry for a tooth, the pre-final rated geometry has a working allowance with respect to the final rated geometry, repeating the steps of the first mass control circuit on the component: grinding, measuring and correcting until the toothing ground on the component reaches a predetermined accuracy with respect to the pre-final rated geometry; the axial movement and / or geometry of the grinding tool for the grinding stroke is determined by repeating the steps of grinding, measuring and correcting for the final target geometry of the toothing by means of a second mass control circuit, and the steps of grinding, measuring and correcting of the second mass control circuit are repeated on the component, until the ground teeth reach a predetermined accuracy with respect to the final desired geometry.

Description

Technical Field

[0001] The invention relates to a method for producing a toothing grinding method and to a toothing grinding method. Background Art

[0002] The machining of the toothed section to be ground usually comprises a plurality of grinding strokes, for example one or more so-called roughing strokes are used, which are firstly carried out with a relatively large feed, followed by at least one so-called finishing stroke which is carried out with a relatively small feed.

[0003] The coarser roughing is used to first remove material quickly at a higher removal rate per unit time until the preset machining allowance, while the final finishing is used to reflect the preset nominal geometry of the toothing as accurately as possible at a lower removal rate per unit time on the toothing to be ground. In order to achieve short machining times, the number of grinding strokes is generally kept as small as possible.

[0004] Between grinding passes, a change is often made from machining in the same direction to machining in the opposite direction in order to keep the time for repositioning the tool between grinding passes short. The change between machining in the same direction and machining in the opposite direction has the same meaning as a change in the direction of the geometrical passes. The final finishing pass or all finishing passes are usually carried out in the opposite direction in order to produce a good surface on the tooth flank. In addition to the feed and machining direction, technical parameters such as the feed and cutting speed, i.e. the corresponding rotational speed of the grinding tool, often also vary from one grinding pass to another.

[0005] Tests by the applicant have shown that the meshing relationship varies during machining with different grinding strokes. Depending on the respective grinding stroke, different deflection forces and excitations act on the grinding tool, which influence the grinding result and thus the shape of the tooth flank produced by the respective grinding stroke. Thus, the roughing stroke and, if applicable, the finishing stroke carried out before the final finishing stroke can have an influence on the final tooth flank shape of the toothing produced by the final finishing stroke.

[0006] Further tests by the applicant have shown that the grinding stroke carried out directly before the final grinding stroke (also referred to herein as the pre-final grinding stroke) may not produce the machining allowance required for the final grinding stroke sufficiently uniformly (e.g. due to a change in stroke direction before the final grinding stroke). In the subsequent final grinding stroke, inaccuracies resulting from the pre-final grinding stroke may not be fully compensated.

[0007] In other words, the deviations resulting from the pre-final roughing or finishing strokes can be transferred to the actual geometry of the toothing that is finally produced. Thus, for example, the deflection of the grinding tool during the advance and withdrawal during the pre-final grinding stroke can also lead to measurable deviations in the final tooth flank shape caused by the deflection.

[0008] Deviations from the desired tooth geometry or tooth flank shape are usually corrected in a quality control loop, also called a "closed loop". In this case, the final tooth geometry produced is measured and the deviations from the desired geometry to be produced are accommodated by adapting the axis movements for grinding the tooth and / or for dressing the grinding tool. This adaptation of the axis movements can also be referred to as correction. The closed loop is therefore a quality control loop with repeated steps of "grinding", "measuring" and "correction".

[0009] In this case, the correction is performed in the same way for all grinding passes. The basis for this is that the correction is determined based on the final deviation, that is, the deviation of the actual geometry from the final desired geometry of the toothing to be produced, which is present after the final grinding pass. The correction of the final grinding pass thus results in the corrective axis movement of the pre-final grinding pass. This procedure has the disadvantage that the negative influence of the pre-final grinding pass on the determination of the final tooth flank shape can be reduced but not eliminated. Summary of the invention

[0010] Against this background, the invention is based on the technical problem of providing an improved method for producing a tooth grinding method and a tooth grinding method which in particular achieve a higher precision for the final tooth flank shape and furthermore in particular allow a more precise correction.

[0011] According to a first aspect, the present invention relates to a method for establishing a tooth grinding method, comprising the following method steps: determining the axis movement and / or geometry of a grinding tool for one grinding stroke or for a plurality of grinding strokes by means of a first quality control loop by repeating the following steps: grinding, measuring and correcting for a pre-final nominal geometry of a tooth, the pre-final nominal geometry having a machining overage relative to a final nominal geometry of the tooth, wherein the steps of the first quality control loop: grinding, measuring and correcting are repeated on a component or on a plurality of components until a tooth ground on the respective component or on the respective components reaches a preset accuracy relative to the pre-final nominal geometry; determining the axis movement and / or geometry of a grinding tool for one grinding stroke or for a plurality of grinding strokes by means of a second quality control loop by repeating the steps of grinding, measuring and correcting for the final nominal geometry of the tooth, wherein the steps of the second quality control loop: grinding, measuring and correcting are repeated on a component or on a plurality of components until a tooth ground on the respective component or on the respective components reaches a preset accuracy relative to the final nominal geometry.

[0012] The quality control loop according to the invention enables a more precise setting up of the grinding method, in which the pre-final setpoint geometry of the toothing is already corrected by means of a separate closed loop, more precisely the first quality control loop. It is thus possible to avoid the transfer of deviations, for example caused by the roughing stroke, into the final tooth flank shape, since these deviations cannot be completely corrected using the conventional single closed loop described at the outset.

[0013] In other words, according to the invention, at least one preparatory phase for the final setpoint geometry is already established and corrected by means of a dedicated quality control loop in order to improve the final machining result. In particular, it is thus possible to achieve a machining allowance required for the final grinding pass with greater accuracy than is possible with a conventional, individual quality control loop. By already improving one or more pre-final grinding passes by means of a first quality control loop, an improved "intermediate product" in the form of a toothing with a more precise machining allowance is already handed over to the second quality control loop, which also includes the final grinding pass.

[0014] According to the invention, therefore, a multi-stage, in particular two-stage or cascaded closed loop for producing a grinding process can also be discussed, which individually corrects and produces individual grinding passes or groups of grinding passes by means of an associated quality control circuit.

[0015] It can be provided that the first mass control loop is concerned with rough machining and the second mass control loop is concerned with fine machining of the toothing. The respective grinding strokes of the first mass control loop can in particular have a greater removal rate per unit time than the respective grinding strokes of the second mass control loop.

[0016] If the machining allowance of the pre-final nominal geometry relative to the final nominal geometry is discussed here, this machining allowance does not have to be constant when viewed over the entire tooth flank. For example, it can be provided that the machining allowance of the pre-final nominal geometry relative to the final nominal geometry is set larger in the center of the tooth flank than in the edge region of the tooth flank, or vice versa. However, the machining allowance can be constant for the entire tooth flank. Preferably, the entire tooth flank of the pre-final nominal geometry has a machining allowance relative to the final nominal geometry. However, it can also be provided that a single area, a plurality of individual areas or a plurality of individual points of the pre-final nominal geometry do not have a machining allowance for the final nominal geometry.

[0017] It can be provided that the axis movement determined by means of the first mass control loop is determined from an uncorrected axis movement in that a correction is assigned to the uncorrected axis movement, wherein the correction is calculated in a correction step of the first mass control loop as a function of a deviation of at least one ground tooth section from the pre-final setpoint geometry ascertained in a measuring step of the first mass control loop.

[0018] The uncorrected axis movements are those axis movements that are initially provided by the software for gear and process design. These axis movements can also be referred to as production data, which are transferred from the software for gear and process design to the grinding machine for gear grinding. Such software is marketed, for example, by the applicant under the name “Gear Designer”.

[0019] The uncorrected production data or uncorrected axis movements are determined by the software for an ideal grinding process. This means that the software assumes a grinding machine operating without deviation and a tool operating without deviation. It is understood that not only the drives, bearings and structures of the grinding machine but also the tool are subject to tolerances, so that running the grinding machine with uncorrected production data necessarily leads to deviations of the actual geometry produced from the pre-final setpoint geometry.

[0020] The first mass control loop thus gradually adapts the axis movements initially transferred to the grinding machine without correction to the respective grinding machine in order to produce the pre-final setpoint geometry of the toothing to be ground as accurately as possible by correcting the axis movements.

[0021] Depending on the type and manifestation of the deviation to be corrected, corrections to the axis movements and / or geometry of the grinding tool can be used in order to reduce the measured deviations of the actual produced geometry from the pre-final setpoint geometry by means of the first quality control loop.

[0022] It can be provided that the geometry of the grinding tool determined by means of the first mass control loop is determined from the uncorrected geometry of the grinding tool by assigning a correction to the uncorrected geometry of the grinding tool, wherein the correction is calculated in a correction step of the first mass control loop as a function of a deviation of at least one ground tooth portion from the pre-final setpoint geometry determined in a measuring step of the first mass control loop.

[0023] Here, too, it is true that the first quality control loop adapts the initially uncorrected production data for a theoretically perfect process, more precisely the geometry of the current grinding tool, to the actual process by means of corrections in order to achieve the smallest possible deviation of the ground toothing from the pre-final setpoint geometry. If corrections are predefined for the geometry of the grinding tool, these corrections are taken into account by a corresponding adaptation of the dressing process.

[0024] The above-described adaptation of the initially uncorrected production data by means of a correction can also be carried out for the second quality control loop, but with respect to the final setpoint geometry.

[0025] According to a refinement of the method, it can be provided that the axis movement determined by means of the second mass control loop is determined from an uncorrected axis movement in that a correction is assigned to the uncorrected axis movement, wherein the correction is calculated in a correction step of the second mass control loop as a function of a deviation of at least one ground toothing from the final setpoint geometry ascertained in a measuring step of the second mass control loop.

[0026] Alternatively or additionally, it can be provided that the geometry of the grinding tool determined by means of the second mass control loop is determined from the uncorrected geometry of the grinding tool by assigning a correction to the uncorrected geometry of the grinding tool, wherein the correction is calculated in a correction step of the second mass control loop as a function of a deviation of at least one ground tooth portion from the final setpoint geometry determined in a measuring step of the second mass control loop.

[0027] As long as the uncorrected production data initially ascertained on the basis of the software, i.e. the uncorrected axis movements and / or the uncorrected geometry of the grinding tool, are adapted by the correction of the first mass control loop, these corrected production data can be used as starting values ​​for the second mass control loop. This means that additional corrections can be superimposed on the correction of the first mass control loop by means of the second mass control loop. In other words, in this case the second mass control loop can be regarded as a fine-tuning or adaptation of the correction of the first mass control loop.

[0028] It can therefore be provided that the axial movements and / or the geometry of the grinding tool determined by means of the first mass control loop are used as input variables for the second mass control loop, so that firstly a first grinding of the second mass control loop is carried out with the axial movements and / or the geometry of the grinding tool determined by means of the first mass control loop, and these axial movements and / or these geometries of the grinding tool are adapted by repeating the steps of the second mass control loop for the final setpoint geometry of the toothing: grinding, measuring and correction, in order to determine the axial movements and / or the geometry of the grinding tool for the second mass control loop.

[0029] Furthermore, it can be provided that the axis movement determined by means of the second mass control loop is determined from the axis movement of the first mass control loop by assigning a further correction to the axis movement or correction of the first mass control loop, wherein in a correction step of the second mass control loop the further correction is calculated as a function of a deviation of at least one ground toothing from the final setpoint geometry ascertained in a measuring step of the second mass control loop.

[0030] Alternatively or additionally, it can be provided that the geometry of the grinding tool determined by means of the second mass control loop is determined from the geometry of the grinding tool of the first mass control loop by assigning a further correction to the geometry or correction of the grinding tool of the first mass control loop, wherein the further correction is calculated in a correction step of the second mass control loop as a function of a deviation of at least one ground tooth portion from the final setpoint geometry ascertained in a measuring step of the second mass control loop.

[0031] The number of required quality control loops can be determined as appropriate for the respective grinding process. Thus, for a grinding process, it may be necessary to define a plurality of pre-final setpoint geometries with quality control loops each assigned to a respective pre-final setpoint geometry in order to reliably achieve the required tolerances of the toothing.

[0032] The method can have further quality control loops for further grinding passes.

[0033] Each grinding stroke can be assigned a corresponding mass control loop. That is to say, each individual grinding stroke can be assigned a single mass control loop that is only provided for the respective grinding stroke in order to establish the grinding process.

[0034] As already discussed, the measured deviations can be corrected by the kinematics of the grinding process and / or by the geometry of the grinding tool. It can therefore be provided that at least one quality control loop includes adapting the tool geometry of the grinding tool by dressing. The terms "geometry of the grinding tool" and "tool geometry of the grinding tool" are used synonymously here.

[0035] The uncorrected production data may include uncorrected kinematics for dressing the grinding tool. The correction may include a correction of the kinematics of the dressing grinding tool. Thus, a kinematics of the dressing movement is used which is changed relative to the uncorrected kinematics of the dressing.

[0036] According to a second aspect, the invention relates to a method having the method steps of: grinding a toothing, wherein one or more grinding strokes are performed, wherein axis movements and / or geometries of the grinding tool are used, which are determined by means of a first quality control loop of the method according to the invention for establishing a toothing grinding method; further grinding the toothing, wherein one or more grinding strokes are performed, wherein axis movements and / or geometries of the grinding tool are used, which are determined by means of a second quality control loop of the method according to the invention for establishing a toothing grinding method.

[0037] Provision can be made for the calibration of the first mass control loop and / or the calibration of the second mass control loop to be adapted, wherein the corresponding steps of grinding, measuring and calibration are carried out for the ground toothing and / or for the further ground toothing.

[0038] After the grinding process, ie the gear grinding method, has been established, a first quality control loop and a second quality control loop can also be executed in order to comply with predefined quality requirements or tolerance requirements, for example within continuous series production.

[0039] The grinding, ie the tooth grinding, can be a continuous rolling grinding by means of a grinding screw, in particular by means of a dressable grinding screw.

[0040] The first mass control circuit and / or the second mass control circuit can have an axis movement which is defined for dressing the grinding screw.

[0041] The grinding screw can have a first section with a grinding tool geometry according to the first mass control circuit, and the grinding screw can have a second section with a grinding tool geometry according to the second mass control circuit. Thus, the same grinding screw can be used for both the grinding stroke of the first mass control circuit and the grinding stroke of the second mass control circuit. The correspondingly required section can be set by displacement.

[0042] Depending on the design, the first and second sections of the grinding screw can differ only in their geometry corresponding to the first and second mass control circuits, but have the same grinding material, that is, the same in terms of grain size, particle material, porosity and matrix material. The grinding screw can have a plurality of geometrically different sections for roughing and finishing.

[0043] The first section may be set to rough machining to obtain a higher removal rate per unit time, while the second section may be set to finish machining.

[0044] The first section can be provided for roughing, for achieving a higher removal rate per unit time and, for example, with a coarser grain size, while the second section can be provided for finishing and, for example, with a finer grain size. It is understood that not only the grain size, but also other parameters of the grinding screw, such as pore size, particle material and matrix material, have an influence on the removal capacity and suitability of the grinding screw for roughing or finishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be described in more detail below with the aid of the accompanying drawings showing exemplary embodiments. They are schematically shown respectively:

[0046] Figure 1 A first quality control loop for establishing a method for tooth grinding according to the invention is shown;

[0047] Figure 2 A second quality control loop for setting up a tooth grinding method according to the invention is shown;

[0048] Figure 3 A grinding screw is shown;

[0049] Figure 4 Shown with Figure 3 The grinding screw meshes with the components. DETAILED DESCRIPTION

[0050] First, in a preliminary method step 2, the toothing 4, the grinding tool 6 for continuous rolling grinding of the toothing 4 and the axis motion, i.e. the process dynamics required for producing the toothing 4 with the aid of the grinding tool 6 are designed. This design can be carried out based on software, for example using the software "Gear Designer" sold by the applicant ( Figure 1 ). The results of the design can be collectively referred to as production data.

[0051] The component to be ground, on which the toothing 4 is to be produced, can be, for example, a spur gear or a helical gear which is to be produced by rolling grinding with the aid of a grinding screw.

[0052] The gearing 4 designed with the aid of the software has a final desired geometry 8. The final desired geometry 8 is the final geometry of the gearing 4 which is to be ultimately produced within a predefined tolerance range with the aid of the gearing grinding method according to the invention.

[0053] The final setpoint geometry 8 is shown in the detailed enlargement as a solid line for two teeth 10 of the toothing 4 by way of example.

[0054] Furthermore, the gearing 4 designed with the aid of the software has a pre-final setpoint geometry 12 with a machining oversize 14 relative to the final setpoint geometry 8. The pre-final setpoint geometry 12 is shown as an example as a dashed line in the detailed enlargement. The pre-final setpoint geometry 12 is currently an intermediate result of a gear grinding method with multiple grinding passes, which is to be achieved after one or more roughing passes and before carrying out a finishing pass.

[0055] According to an alternative embodiment, it can be provided that there is no machining oversize in the tooth root and the tooth root is not ground together. In this case, a pre-toothing, optionally with a projection, can be provided in order to avoid grinding notches in the tooth root.

[0056] The production data designed according to method step 2 are now transferred to the grinding machine 16 . The production data include the uncorrected axis movements for the controlled axes X, Y, Z, A, B and C of the grinding machine 16 .

[0057] The production data also include an uncorrected geometry for the grinding tool 17 to be used, so that firstly the toothing 23 is produced on the first component 19 by means of uncorrected axis movements and uncorrected geometry of the grinding tool. This grinding of the toothing 23 of the first component 19 constitutes the first method step 18 “grinding” for establishing the first quality control loop Q1 of the toothing grinding method according to the invention.

[0058] After the toothing on the first component 19 has been ground, the component 19 is transferred to the second method step 20 “measurement” of the first mass control loop Q1 . For this purpose, the toothing 23 of the component 19 is measured on a coordinate measuring machine 22 by means of a tactile measuring head 24 or an optical measuring device 26 .

[0059] Based on the measurement, the deviation of the actual geometry of the ground toothing from the pre-final setpoint geometry 12 to be produced is determined and in a third method step 28 “correction” of the first quality control loop Q1 a correction 30 for the axis movement and / or geometry of the grinding tool is determined and transferred to the grinding machine 16 .

[0060] This correction can be carried out based on software, for example using the “Gear Corrector” software sold by the applicant.

[0061] If, for example, only a correction of the axis movement is required due to the measured deviation of the actual geometry produced from the pre-final setpoint geometry to be produced, the first quality control loop Q1 is now executed again, more precisely starting with the method step "grinding" which is now executed with the aid of the corrected axis movement. According to an alternative embodiment, it can be provided that this correction also includes a correction of the geometry of the grinding tool 17, if the measured deviation requires this. In this case, the grinding tool 17 can be appropriately dressed before re-grinding.

[0062] The method steps "grinding" 18, "measuring" 20 and "calibrating" 28 are now repeated on the component or components until the toothing 23 ground on the respective component 19 or the respective components 19 has reached a predefined accuracy or maintained a predefined tolerance relative to the pre-final setpoint geometry. Only those corrections are required for which the predefined accuracy or the required toothing tolerance is observed, and the first quality control loop Q1 of the method for setting up the toothing grinding method is completed and the correction for the roughing stroke is known.

[0063] In the next method step, the above-described process is repeated for the second quality control loop Q2 , wherein the second quality control loop Q2 is used to optimize the finishing path of the gear grinding method to be produced, taking into account the final target geometry 8 .

[0064] To this end, the axis movement and / or the geometry of the grinding tool for a finishing stroke or for a plurality of finishing strokes are determined again and, more precisely, by repeating the steps of "grinding", "measuring" and "correcting" for the final setpoint geometry 8 of the toothing 4, wherein the steps of the second quality control loop Q2 of grinding, measuring and correcting are repeated on one component or on a plurality of components until the toothing 23 ground on the respective component 19 or on the respective plurality of components 19 achieves a predefined accuracy relative to the final setpoint geometry.

[0065] In the present example, the axial motions and / or the geometric structure of the grinding tool determined by means of the first mass control loop Q1 are used as input variables of the second mass control loop Q2, so that first grinding of the second mass control loop Q2 is performed using the axial motions and / or the geometric structure of the grinding tool determined by means of the first mass control loop Q1, and these axial motions and / or these geometries of the grinding tool are adapted by repeating the steps of the second mass control loop for the final setpoint geometry of the toothing: grinding, measuring and correction, so as to determine the axial motions and / or the geometric structure of the grinding tool of the second mass control loop Q2.

[0066] Therefore, a further correction 32 is superimposed on the correction 30 of the first mass control loop by means of the second mass control loop in order to be able to produce the required final setpoint geometry 8 of the toothing 4 as accurately as possible by means of the finishing stroke.

[0067] In order to correct the geometry of the grinding tool, the grinding tool 17 can be dressed with the aid of the grinding machine 16, wherein the grinding machine 16 has a dresser 34 and controlled axes for dressing, which carry out the axis movements for dressing, more precisely the axes B2 and C3 of the dresser, and the corresponding axes of the grinding machine 16 mentioned above, which are provided for controlling the movement of the grinding tool 17, more precisely the axes X, Y, Z, A, B.

[0068] According to an alternative embodiment, it can be provided that the quality control loops Q1 and Q2 are independent of each other and no correction is transferred from the first quality control loop Q1 to the second quality control loop Q2. In this case, both quality control loops Q1 and Q2 start with the designed uncorrected production data and determine corrections independently of each other.

[0069] After the first mass control loop Q1 and the second mass control loop have been concluded and the correction 30 for roughing and the correction 32 for finishing have been determined, series production can be carried out using the established tooth grinding method.

[0070] A method is then carried out on the grinding machine 16, which method comprises the following method steps: grinding of the toothing, wherein one or more grinding passes are carried out, wherein the axis motions and / or the geometry of the grinding tool determined by means of the first quality control loop Q1 are used; further grinding of the toothing, wherein one or more grinding passes are carried out, wherein the axis motions and / or the geometry of the grinding tool determined by means of the second quality control loop Q2 are used. The grinding is a continuous rolling grinding with the aid of the dressable grinding screw 17.

[0071] As in Figure 3 and Figure 4 As shown by way of example in , it can be provided that the grinding screw 17 has a first section L1 having a geometry of the grinding tool according to the first quality control loop Q1 , and that the grinding screw 17 has a second section L2 having a geometry of the grinding tool 17 according to the second quality control loop Q1 .

[0072] The first section L1 can be used for rough machining of the toothed portion 23 ( Figure 4 ). The second section L2 can be used for finishing the toothing 23 of the component 19. The list of reference numerals is the subject of the present disclosure.

[0073] If corrections are mentioned in this context, these corrections can have, for example, changed positions and / or changed movement paths and / or changed speeds for the machine axes X, Y, Z, A, B, C, B2, C3. Thus, for example, it can be provided that the position of the X axis, which was preset as constant during grinding according to the uncorrected production data, is now shifted during grinding, or that Z and X are shifted by means of curves instead of straight lines. Likewise, corrections for one or more grinding strokes can have, for example, adapted feeds, adapted cutting speeds, adapted grinding tool rotations or workpiece rotations, changed stroke speeds, etc. Furthermore, the shift ratio can be varied.

[0074] With regard to the geometry of the grinding tool, the correction can have, for example, changed values ​​for the engagement angle, the pitch, the lead angle, etc., which are produced on the grinding tool by means of a corrected dressing movement.

[0075] Reference numerals list

[0076] Software-based design of 2-tooth

[0077] 4 According to the designed tooth

[0078] 6. Grinding screw according to design

[0079] 8 Based on the final rated geometry of the design

[0080] 10 teeth

[0081] 12 Based on the designed final rated geometry

[0082] 14 Machining allowance

[0083] 16Grinding Machine / Gear Grinding Machine

[0084] 17 Grinding tool / grinding screw

[0085] 18 Method step "Grinding"

[0086] 20 Method step "Measurement"

[0087] 22 Coordinate measuring machine

[0088] 24 tactile measuring heads

[0089] 26 Optical measurement system

[0090] 28 Method step "Correction"

[0091] 30 Calibration

[0092] 32 Additional corrections

[0093] 34 Dresser

[0094] Q1 first quality regulation loop

[0095] Q2 second quality regulation loop

[0096] X machine axis

[0097] Y machine axis

[0098] Z machine axis

[0099] A Machine Axis

[0100] B Machine Axis

[0101] C Machine Axis

[0102] B2 Machine Axis

[0103] C3 machine axis

[0104] Z1 clamping device

Claims

1. A method for establishing a tooth grinding method, comprising the following method steps: - determining the axis movement and / or geometry of the grinding tool (17) for one grinding stroke or for a plurality of grinding strokes by means of a first quality control loop (Q1) by repeating the following steps: grinding (18), measuring (20) and correcting (28) a pre-final setpoint geometry (12) for a toothing (4), the pre-final setpoint geometry having a machining oversize (14) relative to a final setpoint geometry (8) of the toothing (4), wherein: Repeating the steps of the first quality control loop (Q1): grinding (18), measuring (20) and calibration (28) on a component or on a plurality of components (19) until the toothing ground on the respective component (19) or on the respective plurality of components (19) reaches a predetermined accuracy relative to the pre-final setpoint geometry (12); - determining the axis movement and / or geometry of the grinding tool (17) for one grinding stroke or for a plurality of grinding strokes by means of a second quality control loop (Q2) by repeating the steps of grinding (18), measuring (20) and correcting (28) for a final desired geometry (12) of the toothing (4), wherein the steps of the second quality control loop (Q2) of grinding (18), measuring (20) and correcting (28) are repeated on a component (19) or on a plurality of components (19) until the toothing ground on the respective component (19) or on the respective plurality of components (19) reaches a predefined accuracy relative to the final desired geometry (8).

2. The method according to claim 1, characterized in that - determining an axis movement determined by means of the first mass control loop (Q1) from an uncorrected axis movement by assigning a correction (30) to the uncorrected axis movement, wherein the correction (30) is calculated in a correction (28) step of the first mass control loop (Q1) as a function of a deviation of at least one ground toothing (23) from the pre-final setpoint geometry (12) ascertained in a measurement (20) step of the first mass control loop (Q1), and / or - determining the geometry of the grinding tool (17) determined by means of the first mass control loop (Q1) from the uncorrected geometry of the grinding tool (6) by assigning a correction (30) to the uncorrected geometry of the grinding tool (6), wherein the correction (30) is calculated in a correction step (28) of the first mass control loop (Q1) as a function of a deviation of at least one ground toothing (23) from the pre-final setpoint geometry (12) ascertained in a measurement step (20) of the first mass control loop (Q1).

3. The method according to any one of the preceding claims, characterized in that - determining the axis movement determined by means of the second mass control loop (Q2) from an uncorrected axis movement by assigning a correction to the uncorrected axis movement, wherein the correction is calculated in a correction step of the second mass control loop (Q2) as a function of a deviation of at least one ground toothing (23) from the final setpoint geometry (8) ascertained in a measurement (20) step of the second mass control loop (Q2), and / or - determining the geometry of the grinding tool determined by means of the second mass control loop (Q2) from the uncorrected geometry of the grinding tool by assigning a correction to the uncorrected geometry of the grinding tool, wherein the correction is calculated in a correction step (28) of the second mass control loop (Q2) as a function of a deviation of at least one ground toothing (23) from the final setpoint geometry (8) ascertained in a measurement step (20) of the second mass control loop (Q2).

4. The method according to claim 1 or claim 2, characterized in that: The axial motions and / or the geometry of the grinding tool determined by means of the first mass control loop (Q1) are used as input variables of the second mass control loop (Q2), so that first grinding of the second mass control loop (Q2) is performed using the axial motions and / or the geometry of the grinding tool determined by means of the first mass control loop (Q1), and these axial motions and / or these geometries of the grinding tool are adapted by repeating the steps of the second mass control loop (Q2) for a final setpoint geometry (8) of the toothing (4): grinding (18), measuring (20) and correcting (28), in order to determine the axial motions and / or the geometry of the grinding tool of the second mass control loop (Q2).

5. The method according to claim 2 and claim 4, characterized in that - determining the axis movement determined by means of the second mass control loop (Q2) from the axis movement of the first mass control loop (Q1) by assigning a further correction (32) to the axis movement or correction (30) of the first mass control loop (Q1), wherein the further correction (32) is calculated in a correction step (28) of the second mass control loop (Q1) as a function of the deviation of at least one ground toothing (23) from the final setpoint geometry (8) ascertained in a measurement step (20) of the second mass control loop (Q1), and / or - determining the geometry of the grinding tool determined by means of the second mass control loop (Q1) from the geometry of the grinding tool of the first mass control loop (Q1) by assigning a further correction (32) to the geometry or correction (30) of the grinding tool of the first mass control loop (Q1), wherein the further correction (32) is calculated in a correction (28) step of the second mass control loop (Q2) as a function of a deviation of at least one ground toothing (23) from the final setpoint geometry (8) ascertained in a measurement (20) step of the second mass control loop (Q2).

6. The method according to any one of the preceding claims, characterized in that Further mass control loops are provided for further grinding strokes, or a corresponding mass control loop is assigned to each grinding stroke.

7. The method according to any one of the preceding claims, characterized in that At least one quality control loop (Q1, Q2) includes adapting the tool geometry by dressing.

8. A method comprising the steps of: - grinding the toothing (23), wherein: performing a grinding stroke or a plurality of grinding strokes, wherein the axis movements and / or the geometry of the grinding tool (17) determined by means of the first mass control loop (Q1) according to any of the preceding claims are used; - further grinding the toothing (23), wherein one grinding pass or a plurality of grinding passes are performed, wherein the axis motions and / or the geometry of the grinding tool (17) determined by means of the second mass control circuit (Q2) according to any of the preceding claims are used.

9. The method according to claim 8 and any one of claims 2 to 5, wherein the correction (30) of the first mass control loop (Q1) and / or the correction (32) of the second mass control loop (Q2) is adapted, wherein: The corresponding steps of grinding (18), measuring (20) and calibrating (28) are carried out for the ground toothing (23) and / or for a further ground toothing (23).

10. The method according to any one of the preceding claims, characterized in that The grinding is a continuous rolling grinding by means of a grinding screw (17), in particular by means of a dressable grinding screw (17).

11. The method according to claim 10, characterized in that The first mass control loop (Q1) and / or the second mass control loop (Q2) comprises determining an axis movement for dressing the grinding screw (17).

12. The method according to claim 10 or claim 11, characterized in that The grinding screw (17) has a first section (L1) having a geometry of a grinding tool according to the first mass control loop (Q1), and the grinding screw (17) has a second section (L2) having a geometry of a grinding tool (17) according to the second mass control loop (Q1).

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