US20060128274A1 - Process and device for grinding a profile of a workpiece - Google Patents

Process and device for grinding a profile of a workpiece Download PDF

Info

Publication number
US20060128274A1
US20060128274A1 US11/192,053 US19205305A US2006128274A1 US 20060128274 A1 US20060128274 A1 US 20060128274A1 US 19205305 A US19205305 A US 19205305A US 2006128274 A1 US2006128274 A1 US 2006128274A1
Authority
US
United States
Prior art keywords
workpiece
grinding
work spindle
swivel
profile
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.)
Abandoned
Application number
US11/192,053
Inventor
Ulrich Nyffenegger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20060128274A1 publication Critical patent/US20060128274A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/11—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding the circumferential surface of rings, e.g. piston rings
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged

Definitions

  • One object of the present invention is therefore to introduce a process and a device of the initially stated type, by means of which undesirable profile deviations on the machined workpiece can be reduced.
  • the workpiece is set up on a work spindle, the work spindle being located on a swivel table swivellable about a swivel axis.
  • the set up workpiece is displaced, together with the work spindle, to a position in which the distance of the radial centre of the profile section relative to the swivel axis of the swivel table is minimized. This profile section is then ground.
  • the invention exploits the fact that especially at high feedrates and accelerations of the involved motional axes the profile deviations are smallest when as far as possible only a single NC axis must be moved in order to generate a profile section to the prescribed extreme accuracy.
  • the arrangement of the axes of motion on the machine according to the invention allows the workpiece to be positioned with high precision, such that critical circular arc shaped sections of the workpiece profile can be produced by a swivel action as sole axis motion.
  • the swivel action is generated by means of a swivel table on which the work spindle is located.
  • the distance of an approximate radial centre of the profile section from the swivel axis is minimized; i.e. the position of the workpiece is so adjusted that the accelerations of the remaining machine axes, now inevitably involved in the grinding process, are minimized.
  • FIG. 1 A diagrammatic representation of a tool grinding machine according to the background of the invention
  • FIG. 2 A diagrammatic representation of a preferred embodiment of a grinding device according to the invention
  • FIG. 3 An enlarged diagrammatic representation of the grinding device according to the invention as shown in FIG. 2 , in plan view, and
  • FIG. 4 An enlarged representation of a detail E indicated in FIG. 3 .
  • FIG. 2 shows diagrammatically a device for grinding the profile of a rotating workpiece 5 in a preferred embodiment according to the invention.
  • This multi-axes numerically controlled grinding machine is composed of a machine column/bed 3 , on which a compound slide with two positioning slides 10 , 11 is arranged. Attached to this compound slide 10 , 11 for rotation about a first horizontal rotary axis B is a grinding spindle 1 .
  • the machine bed 3 is furthermore provided with a third positioning slide 14 for a work spindle 4 .
  • the grinding spindle 1 serves to accommodate a grinding tool, in particular a grinding wheel 2 or another tool suitable for the desired machining process. It is located on a machine column 3 for linear displacement in the direction of a first machine axis X and in the direction of a second machine axis Z at right angles to the axis X. As is known from the background of the invention, it can be connected via a swivel head 15 to the compound slide 10 , 11 . This is not necessary, however, and nor is it the case in this embodiment.
  • the machine bed 3 Opposite to the grinding spindle 1 the machine bed 3 is provided with a third positioning slide 14 , on which a swivel table 6 is located.
  • the swivel table can thus be displaced in the linear direction of the third machine axis Y.
  • Arranged on the swivel table 6 are two more positioning slides 12 , 13 in cross configuration.
  • Located for rotation in the uppermost positioning slide 13 is the work spindle 4 for accommodating a workpiece 5 to be machined.
  • the workpiece 5 rotates about a horizontal axis A which coincides with the longitudinal axis of the work spindle 4 .
  • the compound slide 12 , 13 permits a linear displacement of the work spindle 4 along an axial stroke direction U and along a transverse stroke direction V. It is irrelevant which of the two slides 12 , 13 is arranged at the top and which at the bottom.
  • the swivel table 6 permits a swivelling of the compound slide 12 , 13 , and hence of the work spindle 4 about a swivel axis D.
  • This swivel axis D runs in the vertical direction, i.e. at right angles to the axial and transverse stroke directions U, V, and also at right angles to the work spindle 4 .
  • the workpiece 5 can be brought to the grinding wheel 2 and optimally positioned for its subsequent machining.
  • a workpiece 5 is shown, the profile of which contains a profile section 7 of circular arc shape.
  • This profile section 7 is to be ground to the highest accuracy.
  • the workpiece is displaced, prior to machining, relative to the swivel axis D in the axes directions U and V to a position at which the radial centre of the circular arc shaped profile section 7 of the workpiece coincides with the swivel axis D of the swivel table 6 , as is shown in FIG. 4 .
  • the grinding process is interrupted after the grinding of the first arc shaped section 7 of the workpiece profile, and not resumed until the radial centre of the next profile section has been exactly positioned on the swivel axis D of the swivel table 6 .
  • the position of the workpiece 5 relative to the swivel axis D is selected such that the accelerations of the linear machine axes involved in the profile generation stay as low as possible during grinding.
  • the distance from the radial centre is thus not equal to zero. Instead an approximated radial centre is brought to coincide with the swivel axis.
  • the device according to the invention increases the accuracy of the profiles by reducing the simultaneous axes motions for grinding this profile to a single machine axis.

Abstract

On a device for grinding the profile of a rotating workpiece (5), the rotating workpiece (5), arranged on a swivel table (6) for axial and transverse displacement with reference to the work spindle (4), is according to the invention positioned prior to grinding and relative to a swivel table axis (D) such that the radial centre of a circular arc shaped workpiece profile section (7) due for high precision grinding coincides with the swivel axis (D) of the swivel table (6). The thereby attained reduction of the number of simultaneous axes motions involved in grinding this profile section (7) to a single machine axis permits an optimum profile accuracy.

Description

    SUMMARY OF THE INVENTION
  • One object of the present invention is therefore to introduce a process and a device of the initially stated type, by means of which undesirable profile deviations on the machined workpiece can be reduced.
  • This object is achieved with a process and a device according to the claims 1 and 8 respectively.
  • In the process according to the invention and with the device according to the invention for the grinding of an approximately or exactly circular arc shaped profile section of a workpiece on a grinding machine, the workpiece is set up on a work spindle, the work spindle being located on a swivel table swivellable about a swivel axis. The set up workpiece is displaced, together with the work spindle, to a position in which the distance of the radial centre of the profile section relative to the swivel axis of the swivel table is minimized. This profile section is then ground.
  • The invention exploits the fact that especially at high feedrates and accelerations of the involved motional axes the profile deviations are smallest when as far as possible only a single NC axis must be moved in order to generate a profile section to the prescribed extreme accuracy.
  • The arrangement of the axes of motion on the machine according to the invention allows the workpiece to be positioned with high precision, such that critical circular arc shaped sections of the workpiece profile can be produced by a swivel action as sole axis motion. The swivel action is generated by means of a swivel table on which the work spindle is located.
  • If the workpiece profile section to be ground is not an exact circular arc, the distance of an approximate radial centre of the profile section from the swivel axis is minimized; i.e. the position of the workpiece is so adjusted that the accelerations of the remaining machine axes, now inevitably involved in the grinding process, are minimized.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • In the following the invention is explained in detail by way of a preferred embodiment which is illustrated in the annexed drawings. The drawings depict:
  • FIG. 1 A diagrammatic representation of a tool grinding machine according to the background of the invention,
  • FIG. 2 A diagrammatic representation of a preferred embodiment of a grinding device according to the invention,
  • FIG. 3 An enlarged diagrammatic representation of the grinding device according to the invention as shown in FIG. 2, in plan view, and
  • FIG. 4 An enlarged representation of a detail E indicated in FIG. 3.
    • DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
  • FIG. 2 shows diagrammatically a device for grinding the profile of a rotating workpiece 5 in a preferred embodiment according to the invention. This multi-axes numerically controlled grinding machine is composed of a machine column/bed 3, on which a compound slide with two positioning slides 10, 11 is arranged. Attached to this compound slide 10, 11 for rotation about a first horizontal rotary axis B is a grinding spindle 1. The machine bed 3 is furthermore provided with a third positioning slide 14 for a work spindle 4.
  • The grinding spindle 1 serves to accommodate a grinding tool, in particular a grinding wheel 2 or another tool suitable for the desired machining process. It is located on a machine column 3 for linear displacement in the direction of a first machine axis X and in the direction of a second machine axis Z at right angles to the axis X. As is known from the background of the invention, it can be connected via a swivel head 15 to the compound slide 10, 11. This is not necessary, however, and nor is it the case in this embodiment.
  • Opposite to the grinding spindle 1 the machine bed 3 is provided with a third positioning slide 14, on which a swivel table 6 is located. The swivel table can thus be displaced in the linear direction of the third machine axis Y. Arranged on the swivel table 6 are two more positioning slides 12, 13 in cross configuration. Located for rotation in the uppermost positioning slide 13 is the work spindle 4 for accommodating a workpiece 5 to be machined. The workpiece 5 rotates about a horizontal axis A which coincides with the longitudinal axis of the work spindle 4.
  • The compound slide 12, 13 permits a linear displacement of the work spindle 4 along an axial stroke direction U and along a transverse stroke direction V. It is irrelevant which of the two slides 12, 13 is arranged at the top and which at the bottom.
  • The swivel table 6 permits a swivelling of the compound slide 12, 13, and hence of the work spindle 4 about a swivel axis D. This swivel axis D runs in the vertical direction, i.e. at right angles to the axial and transverse stroke directions U, V, and also at right angles to the work spindle 4.
  • By swivelling about the swivel axis D and appropriate translatory displacement along the Y, U and V axes, the workpiece 5 can be brought to the grinding wheel 2 and optimally positioned for its subsequent machining.
  • Referring to FIG. 3, an example of such an optimum positioning is described. For a simple machining example a workpiece 5 is shown, the profile of which contains a profile section 7 of circular arc shape. This profile section 7 is to be ground to the highest accuracy. In order to guarantee this, according to the invention the workpiece is displaced, prior to machining, relative to the swivel axis D in the axes directions U and V to a position at which the radial centre of the circular arc shaped profile section 7 of the workpiece coincides with the swivel axis D of the swivel table 6, as is shown in FIG. 4.
  • It is thereby achieved that the swivel action of the swivel table 6 alone is adequate for producing the circular arc shaped section 7 of the workpiece profile, and the contour accuracy is not impaired by the superpositioning of the motions of several motion axes, as would be the case if the radial centre of the arc shaped section 7 of the workpiece profile did not lie on the swivel axis D.
  • If the workpiece 5 contains further circular arc profile sections 8, 9, which must likewise be ground with the highest precision, the grinding process is interrupted after the grinding of the first arc shaped section 7 of the workpiece profile, and not resumed until the radial centre of the next profile section has been exactly positioned on the swivel axis D of the swivel table 6.
  • If the workpiece profile sections 7, 8, 9 are only approximately of circular arc shape, the position of the workpiece 5 relative to the swivel axis D is selected such that the accelerations of the linear machine axes involved in the profile generation stay as low as possible during grinding. The distance from the radial centre is thus not equal to zero. Instead an approximated radial centre is brought to coincide with the swivel axis.
  • The device according to the invention increases the accuracy of the profiles by reducing the simultaneous axes motions for grinding this profile to a single machine axis.
    • List of Reference Numbers
    • 1 Grinding spindle
    • 2 Grinding wheel
    • 3 Machine column/bed
    • 4 Work spindle
    • 5 Workpiece
    • 6 Swivel table
    • 7/8/9 Circular arc shaped workpiece profile sections
    • 10 Fist positioning slide of the grinding spindle
    • 11 Second positioning slide of the grinding spindle
    • 12 First positioning slide of the work spindle
    • 13 Second positioning slide of the work spindle
    • 14 Positioning slide of the swivel table
    • 15 Swivel head
    • A Axis of rotation of the workpiece
    • B Axis of rotation of the grinding wheel
    • C Swivel axis of the grinding spindle
    • D Swivel axis of the positioning slide of the work spindle
    • X Axial stroke direction of the grinding wheel
    • Y Infeed direction of the swivel table
    • Z Vertical stroke direction of the grinding wheel
    • U Axial stroke direction of the work spindle
    • V Transverse stroke direction of the work spindle

Claims (13)

1. Process for grinding a profile of a workpiece on a grinding machine, said workpiece having an approximately circular arc shaped or a truly circular arc shaped profile section with a radial centre, said process comprising the steps of:
attaching the workpiece to a work spindle, the work spindle being arranged on a swivel table swivellable about a swivel axis,
shifting the set up workpiece, together with the work spindle, to a position in which the distance of the radial centre of said profile section relative to the swivel axis of the swivel table is minimized, and grinding said profile section.
2. Process according to claim 1 wherein, in the case of a truly circular arc shaped profile, the set up workpiece is shifted, together with the work spindle, such that the radial centre of the circular arc shaped profile section comes to lie on the swivel axis of the swivel table.
3. Process according to claim 1 wherein, in the case of an only approximately circular arc shaped profile section, the position of the workpiece relative to the swivel axis is so selected that an acceleration of machine axes of the grinding machine which are involved in the generation of the profile section during grinding is minimized.
4. Process according to claim 1, wherein to reach the stated position, the work spindle is shifted in linear manner.
5. Process according to claim 4, wherein to reach the stated position, the work spindle is additionally swivelled about the swivel axis.
6. Process according to claim 1, wherein the workpiece is rotated during grinding.
7. Process according to claim 1, wherein, in the case of a workpiece profile with several approximately circular arc shaped or truly circular arc shaped profile sections,
a. the set up workpiece is brought to a first position in which the distance of the radial centre of a first of these profile sections relative to the swivel axis of the swivel table is minimized, and
b. this first profile section is subsequently ground,
c. the grinding process is interrupted after the grinding of this first workpiece profile section,
d. the set up workpiece is shifted, together with the work spindle to a second position, in which the distance of the radial centre of a second of these profile sections relative to the swivel axis of the swivel table is minimized, and
e. this second profile section is subsequently ground, and
f. the operations c) to e) are repeated so often until all these profile sections have been ground.
8. Device for grinding a profile of a workpiece by means of a tool, the device comprising a machine column/bed, a grinding spindle connected to the machine column for accommodating the tool, and a work spindle connected to the machine bed for accommodating the workpiece, wherein the device is provided with a swivel table with a swivel axis, the work spindle being arranged on said swivel table for swivelling about the swivel axis.
9. Device according to claim 8, wherein the work spindle is arranged for linear displacement on the swivel table in at least one direction.
10. Device according to claim 9, wherein the work spindle is displaceable along two linear axes at right angles to each other.
11. Device according to claim 8, wherein the swivel table is displaceable along at least one linear axis relative to the machine column/bed.
12. Device according to claim 9, wherein the swivel axis runs in the vertical direction and the linear displacement of the work spindle takes place in at least one horizontal direction.
13. Device according to claim 8, wherein a compound slide is arranged on the swivel table, the work spindle being attached to said compound slide.
US11/192,053 2004-08-24 2005-09-19 Process and device for grinding a profile of a workpiece Abandoned US20060128274A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004041117A DE102004041117A1 (en) 2004-08-24 2004-08-24 Method and device for grinding a profile of a workpiece
DE102004041117.4 2004-08-24

Publications (1)

Publication Number Publication Date
US20060128274A1 true US20060128274A1 (en) 2006-06-15

Family

ID=34976546

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/192,053 Abandoned US20060128274A1 (en) 2004-08-24 2005-09-19 Process and device for grinding a profile of a workpiece

Country Status (5)

Country Link
US (1) US20060128274A1 (en)
JP (1) JP4953599B2 (en)
CH (1) CH697397B1 (en)
DE (1) DE102004041117A1 (en)
GB (1) GB2417449B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101559573A (en) * 2008-04-17 2009-10-21 达诺巴特集团 Machine and process for grinding dies
US8216025B2 (en) 2006-06-05 2012-07-10 Mitsui High-Tec, Inc. Profile grinding machine
CN102806508A (en) * 2012-07-20 2012-12-05 大连理工大学 Complex molded surface grinding method for three-axis linkage mechanical sealing ring
CN103659526A (en) * 2013-12-12 2014-03-26 江苏晶工工具有限公司 Grinder for machining drill fan-shaped board
US20150111479A1 (en) * 2012-05-30 2015-04-23 Ulrich Barensteiner Device for sharpening tools with cutters, such as for example drills, milling tools or the like
CN106347986A (en) * 2016-08-29 2017-01-25 长兴金诺机械有限公司 Two-way shifting, arranging and step-polishing equipment for processing of piston rings
CN106363479A (en) * 2016-08-29 2017-02-01 长兴金诺机械有限公司 Ring opening, bidirectional stirring, arranging and grinding device
CN106378684A (en) * 2016-08-29 2017-02-08 长兴金诺机械有限公司 Ring opening stirring, arranging and step polishing equipment
US9902036B1 (en) * 2012-08-13 2018-02-27 True Wheel, Inc. Apparatus and method for reshaping bandsaw wheel
CN112720113A (en) * 2021-01-08 2021-04-30 周成建 High-end equipment manufacturing steel plate surface polishing equipment
US20220212309A1 (en) * 2021-01-03 2022-07-07 Teng-Hung WANG Adjustment device of grinding machine capable of grinding workpiece in seven-axis directions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018006033B4 (en) * 2018-07-31 2020-04-23 Vollmer Werke Maschinenfabrik Gmbh Device and method for machining a workpiece, in particular a workpiece with cutting edges, by means of a grinding or eroding tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584795A (en) * 1984-03-22 1986-04-29 Toyoda Koki Kabushiki Kaisha Numerical control grinding machine for grinding a taper portion of a workpiece
US4593444A (en) * 1981-07-30 1986-06-10 Kavthekar Keshav S Machine for manufacturing universal joints
US4760672A (en) * 1986-12-10 1988-08-02 Corning Glass Works Simultaneously grinding and polishing preforms for optical lenses

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117748B1 (en) * 1969-08-19 1976-06-04
FR2144284A5 (en) * 1971-06-30 1973-02-09 Habib Robert
FR2212772A5 (en) * 1972-12-29 1974-07-26 Bettiol Bruno
US4115956A (en) * 1977-06-28 1978-09-26 S. E. Huffman Corporation Programmably controlled machine for grinding end cutting tools and the like
FR2423302A1 (en) * 1978-04-20 1979-11-16 Glaenzer Spicer Sa PROCESS AND MACHINE FOR MACHINING TORIC GROOVES
DE3133488C2 (en) * 1981-08-25 1994-07-28 Montanwerke Walter GmbH, 7400 Tübingen Program-controlled tool grinding machine
GB8617864D0 (en) * 1986-07-22 1986-08-28 Ex Cell O Corp England Ltd Machine tool
JPS63232963A (en) * 1987-03-19 1988-09-28 Canon Inc Polishing device for spherical surface
JPS63232942A (en) * 1987-03-19 1988-09-28 Canon Inc Abrasive feeder
JPS6478752A (en) * 1987-09-18 1989-03-24 Olympus Optical Co Optical element generation method
JP2000108003A (en) * 1998-09-30 2000-04-18 Asahi Optical Co Ltd Spherical surface generating device of diamond pellet for grinding glass lens
DE19964368B4 (en) * 1999-01-20 2005-01-05 Nsk Ltd. Grinding method for constant velocity transmission disk used in motor vehicles involves mounting disk at preset angle with respect to tool and rotating both tool end disk during machining
DE10103121A1 (en) * 2000-01-27 2001-08-02 Oerlikon Geartec Ag Zuerich Grinding at least one surface of cutting blade for use in machining involves changing grinding surface orientations before wear in working area of grinding disc becomes critical
JP4122127B2 (en) * 2000-08-03 2008-07-23 オリンパス株式会社 Wheel grooving device
DE10116807B4 (en) * 2001-04-04 2007-01-11 Erwin Junker Maschinenfabrik Gmbh Method and device for producing transmission disks of a continuously variable transmission
JP4519377B2 (en) * 2001-09-21 2010-08-04 東芝機械株式会社 Turning device
JP2005103667A (en) * 2003-09-29 2005-04-21 Nachi Fujikoshi Corp Free-form surface machining device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593444A (en) * 1981-07-30 1986-06-10 Kavthekar Keshav S Machine for manufacturing universal joints
US4584795A (en) * 1984-03-22 1986-04-29 Toyoda Koki Kabushiki Kaisha Numerical control grinding machine for grinding a taper portion of a workpiece
US4760672A (en) * 1986-12-10 1988-08-02 Corning Glass Works Simultaneously grinding and polishing preforms for optical lenses

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE45075E1 (en) 2006-06-05 2014-08-12 Mitsui High-Tec, Inc. Profile grinding machine
US8216025B2 (en) 2006-06-05 2012-07-10 Mitsui High-Tec, Inc. Profile grinding machine
US20090264048A1 (en) * 2008-04-17 2009-10-22 Danobat, S.Coop. Machine and process for grinding dies
US20110300783A1 (en) * 2008-04-17 2011-12-08 Danobat, S. Coop. Machine for grinding dies
US8221195B2 (en) * 2008-04-17 2012-07-17 Danobat, S. Coop. Process for grinding dies
CN101559573A (en) * 2008-04-17 2009-10-21 达诺巴特集团 Machine and process for grinding dies
US20150111479A1 (en) * 2012-05-30 2015-04-23 Ulrich Barensteiner Device for sharpening tools with cutters, such as for example drills, milling tools or the like
US10532439B2 (en) * 2012-05-30 2020-01-14 Vollmer Werke Maschinenfabrik Gmbh Device for sharpening tools with cutters, such as for example drills, milling tools or the like
CN102806508A (en) * 2012-07-20 2012-12-05 大连理工大学 Complex molded surface grinding method for three-axis linkage mechanical sealing ring
US9902036B1 (en) * 2012-08-13 2018-02-27 True Wheel, Inc. Apparatus and method for reshaping bandsaw wheel
CN103659526A (en) * 2013-12-12 2014-03-26 江苏晶工工具有限公司 Grinder for machining drill fan-shaped board
CN106347986A (en) * 2016-08-29 2017-01-25 长兴金诺机械有限公司 Two-way shifting, arranging and step-polishing equipment for processing of piston rings
CN106363479A (en) * 2016-08-29 2017-02-01 长兴金诺机械有限公司 Ring opening, bidirectional stirring, arranging and grinding device
CN106378684A (en) * 2016-08-29 2017-02-08 长兴金诺机械有限公司 Ring opening stirring, arranging and step polishing equipment
US20220212309A1 (en) * 2021-01-03 2022-07-07 Teng-Hung WANG Adjustment device of grinding machine capable of grinding workpiece in seven-axis directions
CN112720113A (en) * 2021-01-08 2021-04-30 周成建 High-end equipment manufacturing steel plate surface polishing equipment

Also Published As

Publication number Publication date
JP2006062077A (en) 2006-03-09
GB0515258D0 (en) 2005-08-31
GB2417449A (en) 2006-03-01
GB2417449B (en) 2008-05-07
DE102004041117A1 (en) 2006-03-02
CH697397B1 (en) 2008-09-30
JP4953599B2 (en) 2012-06-13

Similar Documents

Publication Publication Date Title
US20060128274A1 (en) Process and device for grinding a profile of a workpiece
EP0562232B1 (en) Machine tool
US5943750A (en) Reconfigurable machine tool
EP1621287B1 (en) Method and apparatus for grinding cams with a re-entrant surface
EP2319656B1 (en) Grinding machine
JPH10128626A (en) Numerically controlled machine tool for turning and hobbing mechanical part
US4543020A (en) Method of manufacturing large gears
CN107214565A (en) Universal chuck lathe
US7101129B2 (en) Machine tool
EP0265586B1 (en) Apparatus for finishing pistons and the like and method therefor
CN1312746A (en) Grinding machine with turning device for hard-machining
JP2828232B2 (en) Opposing spindle lathe
US4798504A (en) Workpiece machining apparatus and method
JP4531297B2 (en) 6-axis control NC program generation method and generation apparatus, 6-axis control NC program generation program, and computer-readable recording medium storing the program
US4867020A (en) Apparatus for finishing pistons and the like and method therefor
JP4441761B2 (en) Inverted spindle combined NC lathe
JP3573289B2 (en) Gun drill machine
JPH05154701A (en) Two-main spindle nc lathe
JP2001129701A (en) Numerically controlled automatic lathe and method of machining workpiece by numerically controlled automatic lathe
JPS582761B2 (en) Numerical control lathe and machining method using it
JP2688616B2 (en) Biaxial machining method for work
JP2005125483A (en) Lathe
JPH06702A (en) Machine tool
JP2835745B2 (en) 2-spindle opposed lathe
KR20100094407A (en) Drilling machine for processing holes

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION