Method of dressing a tool
AssigneeLiebherr-Verzahntechnik GmbH
InventorRobert Wuerfel
Life of this patent
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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.
Claims21
A method of dressing a tool, which can be used for gear tooth machining of a workpiece, using a dresser, the method comprising the steps:
- specifying a specific modification of a surface geometry of the tool by at least one out of:
- specifying the specific modification of the surface geometry of the tool at at least three rolling angles,
- specifying a profile crowning of the specific modification of the surface geometry of the tool;
- specifying the surface geometry of the tool at the at least two rolling angles, and, in addition, associating a specific radius of the dresser with a specific radius of the tool,
- specifying a profile pitch of the specific modification of the surface geometry of the tool, and, in addition, associating a specific radius of the dresser with a specific radius of the tool;
- and
- associating two specific radii of the dresser with two specific radii of the tool;
- determining a relative position of the dresser with respect to the tool suitable for generating the specific modification of the surface geometry of the tool specified in the step of specifying the specific modification of the surface geometry of the tool;
- and
- dressing the tool with line contact between the dresser and the tool using the relative position of the dresser with respect to the tool determined in the step of determining a position of the dresser with respect to the tool.
A dressing machine or a gear manufacturing machine comprising a dressing machine, wherein the dressing machine comprises:
- a tool holder for holding a tool to be dressed;
- a dresser holder for holding a dresser used for dressing of the tool, with the dresser holder having an axis of rotation;
- additional axes of movement by which a relative position between the tool holder and the dresser holder can be adjusted during dressing, the additional axes of movement providing degrees of freedom that can be set independently of one another during the dressing of the tool in line contact with the dresser;
- and
- a control system, wherein the control system is configured to control the axis of rotation and the additional axes of movement such that an angle of rotation of the tool and a tool width position are varied during the dressing to guide the dresser along the tool, wherein the control system has a control function for specifying at least two further degrees of freedom of the relative position between the dresser and the tool independently of one another for influencing a gear tooth geometry produced by the dressing.
A method of dressing a tool, which can be used for gear tooth machining of a workpiece, using a dresser, the method comprising the steps of:
- specifying a specific modification of a surface geometry of the tool;
- determining a relative position of the dresser with respect to the tool suitable for generating the specific modification of the surface geometry of the tool specified in the step of specifying the specific modification of the surface geometry of the tool;
- and
- dressing the tool with line contact between the dresser and the tool using the relative position of the dresser with respect to the tool determined in the step of determining the relative position of the dresser with respect to the tool,
- wherein, in the step of dressing the tool, an angle of rotation of the tool and a tool width position are varied during dressing to guide the dresser along the tool and at least two additional degrees of freedom of the relative position of the dresser with respect to the tool are set independently of one another for generating the specific modification of the surface geometry of the tool.
Dependencies are inferred from the claim text.