Claims
- 1. A method of determining current position data of a first machining tool in a machining space having a second machining tool, the second tool having known position data with regard to position data of the first tool which are to be determined, arranging the first tool and the second tool for movement toward and away from one another, contacting the first tool to be determined in its position with a machining surface, known in its position, of the second machining tool, setting the rotary speed of a drive motor for the second tool to a starting rotary speed which is so low that the rotary speed of the second tool is measurably reduced when the tool comes into contact.
- 2. The method as claimed in claim 1, further comprising the step of establishing absolute position data of the second machining tool by means of various contact actions of the tool at a reference surface of the workpiece or at a part fixed to the workpiece, and effecting an absolute determination of the position of the machining surface in an axial direction.
- 3. The method as claimed in claim 1, wherein the second tool has an end machining surface and the first machining tool has a machining surface lying at a narrowing tip.
- 4. The method as claimed in claim 1, wherein machining axes of the two tools are oriented parallel to one another with an offset (r), so that the first machining tool comes in contact eccentrically with the rotating machining surface of the second machining tool.
- 5. The method as claimed in claim 1, wherein the machining tool, before the contact, is driven at a rotary speed of less than one hundredth of the rotary speed used for the machining, in particular at a rotary speed of 1 to 10 revolutions/second.
- 6. The method as claimed in claim 1, wherein the tools are oriented roughly with respect to one another before the actual determination of the position.
- 7. The method as claimed of claim 1, wherein, during a feeling of the tool tips, so much power is fed to the drive motor that the friction moments of the actual bearing arrangement and of all the lubrication are just overcome.
- 8. The method as claimed in claim 1, wherein the established position of the tool is changed by a predetermined correction value.
- 9. The method as claimed in claim 1, wherein the feed of the second tool and/or of the first tool is coupled with rotary speed of drive motor for the tool in such a way that a reduction in the rotary speed of the tool brings about a reduction in the feed.
- 10. The method as claimed in claim 9, wherein the feed of the tool is stopped if the rotary speed of the drive motor of the tool becomes zero.
- 11. An apparatus for determining current position data of a machining tool, comprising a first and a second spindle for respectively each accommodating at least one machining tool which can be set in rotation and which respectively have a machining surface narrowing toward a tip and an end machining surface, the spindles being arranged and mounted in such a way that the machining tools can be relatively moved toward and away from one another and from a workpiece for the purpose of material removal at the workpiece, drive motors for adjusting the spindles and for the drive of the machining tools, and means for producing a signal which establishes a feed path of the tool and which is used for determining the starting position of the narrowing tip machining tool, wherein a contact area is formed by the end machining surface, and wherein the machining tools are oriented with axes thereof parallel and with an offset (r).
- 12. The apparatus as claimed in claim 11, wherein said at least one machining tool comprises a first tool having the narrowing tip and comprising a spherical grinding pencil with a tip, and said at least one machining tool comprising a second tool comprising a cylinder having an end face comprising the end machining surface.
- 13. The apparatus as claimed in claim 12, wherein the narrowing tip of the first tool comprises a tapered grinding pencil with a tip.
- 14. The apparatus as claimed in claim 11, wherein drive means are provided for moving the respective tools toward one another, the drive means being coupled with rotary speed of one of said at least one machining tool in such a manner that a reduction in rotary speed of the one machining tool reduces movement brought about by the drive means.
Priority Claims (1)
Number |
Date |
Country |
Kind |
101 20 341.1 |
Jan 2001 |
DE |
|
RELATED APPLICATIONS
[0001] This application relates to application Ser. No. 09/596,082, filed Jun. 16, 2000, and to application Ser. No. ______, filed ______, entitled Method of Determining Current Position Data of A Machining Tool and Apparatus Therefor, of Franz Basler, both applications commonly owned herewith. The entirety of the disclosures of both applications are specifically incorporated herein by reference.