EP0346588A2 - Rectifieuse de forme à projecteur de profil et procédé pour sa commande - Google Patents

Rectifieuse de forme à projecteur de profil et procédé pour sa commande Download PDF

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Publication number
EP0346588A2
EP0346588A2 EP89106772A EP89106772A EP0346588A2 EP 0346588 A2 EP0346588 A2 EP 0346588A2 EP 89106772 A EP89106772 A EP 89106772A EP 89106772 A EP89106772 A EP 89106772A EP 0346588 A2 EP0346588 A2 EP 0346588A2
Authority
EP
European Patent Office
Prior art keywords
grinding
workpiece
path
stored
probe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89106772A
Other languages
German (de)
English (en)
Other versions
EP0346588A3 (fr
Inventor
Roland Dipl.-Ing. Henseleit
Dieter Fleckenstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Werkzeugmaschinenbau Prazisions-Technik Wertheim GmbH
Original Assignee
Werkzeugmaschinenbau Prazisions-Technik Wertheim GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Werkzeugmaschinenbau Prazisions-Technik Wertheim GmbH filed Critical Werkzeugmaschinenbau Prazisions-Technik Wertheim GmbH
Publication of EP0346588A2 publication Critical patent/EP0346588A2/fr
Publication of EP0346588A3 publication Critical patent/EP0346588A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B17/00—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
    • B24B17/02—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving mechanical transmission means only

Definitions

  • the invention relates to a projection-optical form grinding machine with a grinding spindle mounted in a grinding headstock and a workpiece slide that can be moved relative to it in two movement axes by means of an electronic control device, with the electronic digital path measuring devices assigned to the two movement axes, and an electronic storage device that are connected to the control device.
  • the workpiece is brought to a measuring machine, for example, and scanned there with a switching probe, with the path information supplied by a path measuring device being stored in a memory device of the measuring machine when the measuring switch is switched .
  • a measuring switch switching in at least one of the movement axes, which is fixedly arranged with respect to the grinding headstock, is electronically connected to the control device in such a way that, when the measuring switch is switched, that of at least one of the displacement measuring devices at that moment supplied route information is stored in the storage device.
  • the probe is firmly attached and can therefore be carried out with a very high response and repeatability.
  • a quick change of machining processes and measuring processes is possible because neither the tool nor the probe has to be exchanged.
  • the electronic digital path measuring devices of the form grinding machine itself are also used for the measuring process, the measuring accuracy is at least as high as the machining accuracy, and there are no errors due to deviations between separate path measuring devices of the processing machine and a measuring device.
  • measurement data can be recorded and stored alternately to the grinding process, which can be evaluated geometrically and technologically for further processing.
  • the geometrical influence affects the position of the workpiece coordinate system, the workpiece zero point and the radius of the tool for the equidistant calculation of the path correction.
  • the technological influence concerns the strategy of finishing in one or more passes as well as the influencing of the path feed along the profile to be machined.
  • the invention makes it possible to determine the distance of the grinding wheel peripheral radius from the mechanical swivel axis by executing a test program with subsequent remeasurement at significant profile points.
  • the shape grinding machine according to the invention is preferably designed in such a way that the measuring probe switches in both movement axes and that the path information supplied by both path measuring devices is stored in the memory device.
  • the invention also relates to an advantageous method for controlling a form grinding machine, path information supplied by the path measuring devices being stored in the storage device.
  • the method is characterized in that when the probe is switched, the path information supplied by at least one of the path measuring devices at that moment is stored in the memory device.
  • the parts of a projection-optical shape grinding machine which are only partially and greatly simplified in FIG. 1, comprise a grinding headstock 1, in which a grinding spindle 2 is mounted, which carries a grinding wheel 3.
  • a workpiece 4 to be machined is received on a workpiece carriage 5 which can be driven in the X axis by means of a first carriage drive 6 and in the Y axis by means of a second carriage drive 7.
  • Electronic digital displacement measuring devices 8 and 9 are assigned to the axes of movement X, Y of the workpiece carriage 5 and provide travel information to an electronic control device 10, from which the carriage drives 6, 7 are controlled after a (not shown) setpoint input.
  • a probe 11 is attached to the grinding headstock 1 and can be brought into key engagement with the workpiece 4 in alternation with a machining intervention of the grinding wheel 3.
  • the probe 11 is constructed so that it switches at least in the X axis, but preferably in the two XY axes when touching the workpiece surface to be probed.
  • the probe 11 delivers a command to the control device 10.
  • This command causes the travel information supplied by the travel measuring devices 8, 9 at this moment to be delivered to an electronic storage device 12 and stored there.
  • This stored route information can be called up by the control device 10 from the storage device 12 and processed further.
  • control device 10 and the storage device 12 are, for example, parts of a computer-aided numerical path control (CNC control) of the form grinding machine.
  • CNC control computer-aided numerical path control
  • the touch and save process can be carried out, for example, after the grinding process has been completed to check the ground shapes.
  • the path information stored in the memory device 12 can be compared with specified target values, taking into account the fixedly specified displacement path between the grinding wheel intervention and the probe intervention.
  • the results of these comparison processes provide information on the workpiece geometry on the one hand, for example on compliance with specified manufacturing tolerances, and on the other hand about the machining process. This makes it possible to determine whether an additional machining process is required or whether a path correction or a grinding wheel removal is required for the subsequent machining of the same workpiece.
  • the touch and save process can also be used to determine reference dimensions on pre-machined workpiece blanks before grinding is carried out.
  • Fig. 3 it is shown that the probe 11 successively probes an outer contour 4a and a pre-machined contour 4b on the workpiece 4, for example a die half.
  • the path information about the distance between the two probed surfaces 4a, 4b is stored in the memory device 12 and provides a dimensional connection between the surface 4a predetermined on the workpiece 4, which lies outside the part of the workpiece 4 visible on the screen 13 of the projection-optical form grinding machine, and the surface 4b ago, which lies in the section visible on the screen 13.
  • the machined profile surfaces which are visible on the screen 13 can be aligned with high accuracy to an outer surface 4a of the workpiece 4, although this outer surface 4a is not visible on the screen 13.
  • the method according to the invention can also be used to regularly check a spindle pitch error correction.
  • a plurality of tactile areas on the workpiece carriage, predetermined by length standards, are scanned in succession and the respectively stored path information is used to check the spindle pitch error correction of a drive of the workpiece carriage.
  • the method for determining the positional values of a cone to be ground can be used, for example the cone angle and the position of the cone tip for form grinding machines with swiveling and stroke.
  • the keying and saving process can be carried out as part of a test program in which a profile is processed and then scanned at several predetermined profile points.
  • the stored path information is used to determine the distance of the grinding wheel peripheral radius from a mechanical pivot axis of the grinding headstock 1 or the workpiece carriage 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP19890106772 1988-06-13 1989-04-15 Rectifieuse de forme à projecteur de profil et procédé pour sa commande Withdrawn EP0346588A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883819897 DE3819897A1 (de) 1988-06-13 1988-06-13 Projektionsoptische formenschleifmaschine und verfahren zu ihrer steuerung
DE3819897 1988-06-13

Publications (2)

Publication Number Publication Date
EP0346588A2 true EP0346588A2 (fr) 1989-12-20
EP0346588A3 EP0346588A3 (fr) 1991-06-12

Family

ID=6356328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890106772 Withdrawn EP0346588A3 (fr) 1988-06-13 1989-04-15 Rectifieuse de forme à projecteur de profil et procédé pour sa commande

Country Status (2)

Country Link
EP (1) EP0346588A3 (fr)
DE (1) DE3819897A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105081924A (zh) * 2015-07-24 2015-11-25 东莞市荣格机械科技有限公司 一种光学变倍cnc磨床及控制***及控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622767A1 (de) * 1996-06-07 1997-12-11 Bayerische Motoren Werke Ag Schleifverfahren für eine rechnergestützte Werkzeugmaschine, insbesondere Schleifmaschine zum Formschleifen, vor allem von Steuernocken einer Nockenwelle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59134656A (ja) * 1983-01-20 1984-08-02 Toshiba Corp 仕上加工方法
GB2154163A (en) * 1984-02-14 1985-09-04 Ti Matrix Limited Cylindrical grinding machine having position detection probe
US4709509A (en) * 1985-10-17 1987-12-01 Toyoda Koki Kabushiki Kaisha Numerically controlled grinding machine
JPS6322261A (ja) * 1987-03-26 1988-01-29 Washino Kikai Kk 光倣い研削盤の自動化方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59134656A (ja) * 1983-01-20 1984-08-02 Toshiba Corp 仕上加工方法
GB2154163A (en) * 1984-02-14 1985-09-04 Ti Matrix Limited Cylindrical grinding machine having position detection probe
US4709509A (en) * 1985-10-17 1987-12-01 Toyoda Koki Kabushiki Kaisha Numerically controlled grinding machine
JPS6322261A (ja) * 1987-03-26 1988-01-29 Washino Kikai Kk 光倣い研削盤の自動化方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 227 (M-713)(3074) 28 Juni 1988, & JP-A-63 22261 (WASHINO KIKAI K.K.) 29 Januar 1988, *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 263 (M-342)(1700) 04 Dezember 1984, & JP-A-59 134656 (TOSHIBA K.K.) 02 August 1984, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105081924A (zh) * 2015-07-24 2015-11-25 东莞市荣格机械科技有限公司 一种光学变倍cnc磨床及控制***及控制方法

Also Published As

Publication number Publication date
DE3819897A1 (de) 1989-12-14
EP0346588A3 (fr) 1991-06-12

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