Method of dressing a tool
AssigneeLiebherr-Verzahntechnik GmbH
InventorRobert WUERFEL
Life of this patent
Estimating the term…
Abstract
A tool which can be used for gear manufacturing machining of a workpiece may be dressed on a dressing machine, and the dressing may take place with line contact between the dresser and the tool. A specific modification of the surface geometry of the tool is produced by the suitable selection of the position of the dresser with respect to the tool during dressing. The specific modification of the surface geometry of the workpiece is specifiable with regard to various parameters.
Claims20
A method of dressing a tool, which can be used for the gear tooth machining of a workpiece, on a dresser, wherein the dressing takes place with line contact between the dresser and the tool, wherein a specific modification of the surface geometry of the tool is produced by the suitable choice of the position of the dresser to the tool when dressing, wherein the specific modification of the surface geometry of the tool is specifiable at at least three rolling angles, and/or wherein a crowning of the specific modification of the surface geometry of the tool is specifiable;
- and/or in that the specific modification of the surface geometry of the tool is specifiable at at least two rolling angles and, in addition, an association of a specific radius of the dresser with a specific radius of the tool takes place, and/or wherein a pitch of the specific modification of the surface geometry of the tool is specifiable and, in addition, an association of a specific radius of the dresser with a specific radius of the tool takes place;
- and/or in that an association of two specific radii of the dresser with two specific radii of the tool takes place;
- and/or in that the angle of rotation of the tool and the tool width position are varied during dressing to guide the dresser along the tool and at least two further degrees of freedom of the relative position between the dresser and the tool are set independently of one another for influencing the gear tooth geometry produced by the dressing and/or for the association of a specific radius of the dresser with a specific radius of the tool.
A method for the modified dressing of a tool which can be used for the gear manufacturing machining of a workpiece on a dressing machine, comprising:
- specifying a desired profile modification of the tool;
- and
- setting the axes of movement of the dressing machine for influencing a relative position between the dresser and the tool during the dressing in dependence on the desired profile modification, wherein a modified dresser is used and the produced profile modification of the tool results from the profile modification of the dresser and from the set axes of movement of the dressing machine.
A dressing machine or a gear manufacturing machine comprising a dressing machine, wherein the dressing machine has a tool holder for holding a tool to be dressed and a dresser holder for holding a dresser used for this purpose, with the dresser holder having an axis of rotation, and with the dressing machine having further axes of movement by which further degrees of freedom can be set independently of one another during the dressing of the tool in line contact with the dresser, having a control system, wherein the control system controls the axes of movement such that the angle of rotation of the tool and the tool width position are varied during the dressing to guide the dresser along the tool, wherein at least two further degrees of freedom of the relative position between the dresser and the tool can be set and/or controlled and/or specified independently of one another for influencing the gear tooth geometry produced by the dressing;
- and/or wherein the control system has an input function by which the specific modification of the surface geometry of the tool is specifiable, wherein the control system has a calculation function which determines from the specific modification the settings of the axes of movement required for the production of said specific modification during dressing with line contact between the dresser and the tool;
- and wherein the control system has a control function which carries out the corresponding setting of the axes of movement during the dressing with line contact between the dresser and the tool;
- and/or wherein the input function, the calculation function and the control function are configured such that the specific modification of the surface geometry of the tool is specifiable at at least three rolling angles and is produced there by setting the axes of movement of the dressing machine;
- and/or in that a crowning of the gear is specifiable and is produced by the setting of the axes of movement of the dressing machine;
- and/or wherein the input function, the calculation function and the control function are configured such that the specific modification of the surface geometry of the tool is specifiable at at least two rolling angles and is produced there by the setting of the axes of movement of the dressing machine and, in addition, an association of a specific radius of the dresser with a specific radius of the tool is specifiable or is calculated and takes place by the setting of the axes of movement of the dressing machine;
- and/or wherein the input function, the calculation function and the control function are configured such that a pitch of the gearing is specifiable and is produced by the setting of the axes of movement of the dressing machine and, in addition, an association of a specific radius of the dresser with a specific radius of the tool is specifiable or is calculated and takes place by the setting of the axes of movement of the dressing machine;
- and/or wherein the input function, the calculation function and the control function are configured such that an association of two specific radii of the dresser with two specific radii of the tool takes place;
- and/or wherein the input function, the calculation function and the control function are configured such that data with respect to a modified dresser can be input and a determination unit of the control system determines the setting of the axes of movement of the dressing machine such that a desired profile modification of the tool is produced at least approximately from the profile modification of the dresser and from the set axes of movement of the dressing machine, and wherein the functions are stored in non-transitory memory of the control system and executable by a processor of the control system.
Dependencies are inferred from the claim text.