EP3085492B1 - Schleifwerkzeug - Google Patents

Schleifwerkzeug Download PDF

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Publication number
EP3085492B1
EP3085492B1 EP16162638.7A EP16162638A EP3085492B1 EP 3085492 B1 EP3085492 B1 EP 3085492B1 EP 16162638 A EP16162638 A EP 16162638A EP 3085492 B1 EP3085492 B1 EP 3085492B1
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EP
European Patent Office
Prior art keywords
grinding
grinding tool
region
pursuant
cylindrical
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.)
Active
Application number
EP16162638.7A
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German (de)
English (en)
French (fr)
Other versions
EP3085492A2 (de
EP3085492A3 (de
Inventor
Thomas Rossetti
Ralf Palmetshofer
Mario Nairz
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski KG
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Publication date
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Application filed by Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Priority to PL16162638T priority Critical patent/PL3085492T3/pl
Publication of EP3085492A2 publication Critical patent/EP3085492A2/de
Publication of EP3085492A3 publication Critical patent/EP3085492A3/de
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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
    • 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
    • B24B5/06—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 cylindrical surfaces internally
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • B24B33/025—Internal surface of conical shape
    • 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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/08—Honing tools
    • B24B33/083—Honing tools with different sets of honing stones
    • 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
    • B24B5/06—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 cylindrical surfaces internally
    • B24B5/08—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 cylindrical surfaces internally involving a vertical tool spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece

Definitions

  • the invention relates to a grinding tool according to the preamble of claim 1, a set of a first and a second grinding tool according to the preamble of claim 2, the use of a grinding tool according to the invention or one of the two grinding tools of the set according to the invention in a machining process of the inner surface of a cylinder bore in one Workpiece, as well as a CNC machine with at least one grinding tool according to the invention or at least one of the two grinding tools of the set according to the invention and a control program, which is designed to perform the machining process automatically.
  • the DE 24 62 847 C2 and the WO 2013/11 45 27 A1 each show a honing tool, which is used for machining the inner surface of a cylinder bore in a workpiece.
  • the grinding tool has a cylindrical and an adjoining conical region.
  • the object of the present invention is therefore to provide a grinding tool or a set of a first and a second grinding tool, which makes it possible to edit the inner surface of a cylinder bore in a workpiece very quickly and with high precision to the effect that the inner surface of the Machining has a shape that transforms under operating conditions into a quasi-cylindrical shape.
  • Another object of the invention is to provide a use of a grinding tool in a machining process of the inner surface of a cylinder bore in a workpiece, as well as a CNC machine with at least one grinding tool according to the invention.
  • the grinding tool has a free end and an opposite end and the conical grinding area is disposed adjacent to the free end of the grinding tool, and at the opposite end a fastening means for attachment of the grinding tool to a machining head a CNC machine or an associated one Adapter, preferably HSK adapter, is provided, wherein the fastening means is preferably designed as a flange.
  • a machining process of the inner surface of a cylinder bore in a workpiece could thus look like that the grinding tool is introduced with its cylindrical and then conical tapered grinding area in the cylinder bore, is brought to the inner surface of the cylinder bore, at least once in a circle on the inner surface of the cylinder bore along it, where it rotated about its axis of rotation, is lifted from the inner surface of the cylinder bore and is led out of the cylinder bore again.
  • the inner surface of the cylinder bore has taken a shape that is initially cylindrical, and has the shape of an opening cone where the conical grinding region has become effective. If a cylinder bore machined in this way expands unevenly due to the fact that a higher heat development takes place in the cylindrical region than in the region of the cone opening, a quasi-cylindrical bore surface area arises.
  • the cylinder bore can be processed by the grinding tool in a single operation reduces the time required for machining.
  • the precision in the shaping increases because the grinding tool during the machining process does not have to be moved back and forth in the direction of the depth of the cylinder bore, as is the case with honing tools.
  • the second grinding tool of the set has a free end and an opposite end and the conical grinding portion is disposed adjacent to the free end on the second grinding tool of the set, and at the opposite end a fastening means for fixing the second grinding tool of the set to a machining head of a CNC machine or an adapter connected thereto, preferably HSK adapter, is provided, wherein the fastening means is preferably formed as a flange.
  • a machining process of the inner surface of a cylinder bore in a workpiece could look like that the second abrasive tool having the conical grinding portion is first inserted into the cylinder bore, brought to the inner surface of the cylinder bore, at least once in a circle the inner surface of the cylinder bore is guided along, wherein it rotates about its axis of rotation, is lifted from the inner surface of the cylinder bore and is led out of the cylinder bore again.
  • the first grinding tool with the cylindrical grinding portion is inserted into the cylinder bore, guided to the inner surface of the cylinder bore, at least once guided in a circle on the inner surface of the cylinder bore, thereby rotating about its axis of rotation, from the inner surface of the cylinder bore lifted and led out of the cylinder bore again.
  • the inner surface of the cylinder bore has taken a shape that is initially cylindrical, and has the shape of an opening cone where the conical grinding region has become effective. If a cylinder bore machined in this way expands unevenly due to the fact that a higher heat development takes place in the cylindrical region than in the region of the cone opening, a quasi-cylindrical bore surface area arises.
  • the two processing steps by means of the first and the second grinding tool can also be carried out in the reverse order.
  • the variant with the machining of the inner surface of a cylinder bore by means of the set has the disadvantage over the variant with the machining of the inner surface of a cylinder bore by means of the grinding tool, which has both the cylindrical and the conical abrasive coating, that two processing steps are necessary, however These two processing steps are performed with less driving force, since a smaller grinding surface per processing step is effective.
  • kits according to the invention are defined in the dependent claims 3 to 7 and 9 to 15.
  • the diameter of the conical grinding area over the length of the conical grinding area in the axial direction relative to the diameter of the cylindrical grinding area by 50 to 110 microns , preferably by 80 microns, increases, ie that the cone shape is not visible to the naked eye. Nevertheless, in the processing of the inner surface of a cylinder bore already the desired technical effect in an advantageous manner.
  • the cone angle of the conical grinding area is - measured with respect to an axis parallel to the axis of rotation - preferably 0.014 ° to 0.039 °, particularly preferably 0.025 °.
  • the cylindrical and the conical grinding area uniform with the same Abrasive, preferably CBN, are occupied. It is therefore desirable in this case that the two grinding areas produce substantially the same grinding performance.
  • the coating with the abrasive is favorably galvanic.
  • a fundamental advantage of the grinding tool according to the invention or of the grinding tools of the set according to the invention is also that the machined material is removed very quickly from the grinding area.
  • a grinding tool according to claim 1 or one of claims 5 to 15, or one of the two grinding tools of the set according to one of claims 2 to 4 or 5 to 7 or 9 to 15 in a machining process of the inner surface of a Cylinder bore in a workpiece wherein the grinding tool or the one of the two grinding tool of the set is introduced in the course of the machining process in the cylinder bore, is brought to the inner surface of the cylinder bore, at least once guided in a circle on the inner surface of the cylinder bore, wherein it rotated about its axis of rotation, is lifted from the inner surface of the cylinder bore and is led out of the cylinder bore again.
  • protection is desired for a CNC machine having at least one grinding tool according to the invention or at least one set according to the invention and a control program which is designed to automatically carry out the described machining process of the inner surface of a cylinder bore in a workpiece, ie at least one grinding tool or the first of the two grinding tools of the set and in a subsequent step to introduce the other of the two grinding tools of the set respectively in a cylinder bore in a workpiece to introduce it to the inner surface of the cylinder bore, at least once in a circle on the Run along the inner surface of the cylinder bore, wherein it rotates about its axis of rotation, to lift it from the inner surface of the cylinder bore and bring it out of the cylinder bore again.
  • FIG. 1 the abrasive tool 1 according to the invention according to a preferred embodiment is shown schematically in a perspective view. It is essentially rotationally symmetrical about an axis of rotation 4 which extends in the longitudinal direction 26.
  • the grinding tool 1 has a free end 14 and an opposite end 15 to which a fastening means 16 in the form of a flange for attachment of the grinding tool 1 to a machining head of a CNC machine or an adapter connected thereto (see. Fig. 4 ) is provided.
  • a fastening means 16 in the form of a flange for attachment of the grinding tool 1 to a machining head of a CNC machine or an adapter connected thereto (see. Fig. 4 ) is provided.
  • six recesses 24 are provided for receiving screws offset by 60 °.
  • the grinding tool 1 has a base body 11 made of steel, which comprises the fastening flange 16, as well as a component protruding therefrom, on the lateral surface of which a cylindrical 5 and cylindrical conical grinding area 6 adjoining it with respect to the rotation axis 4 are arranged.
  • the cylindrical grinding area 5 adjacent to the fastening means 16 and the conical grinding area 6 are arranged adjacent to the free end 14 of the grinding tool 1.
  • the transition between cylindrical 5 and conical grinding area 6 is indicated by a dashed line.
  • the cylindrical 5 and the conical grinding portion 6 are uniformly coated with the same abrasive, namely CBN (cubic drilled nitrite). The assignment is galvanic.
  • a total of seven grooves 23 are arranged, which extend over the cylindrical 5 and conical grinding area 6 and substantially in the longitudinal direction 26 of the grinding tool 1.
  • these grooves 23 open channels 21, which have a diameter of 2 mm.
  • a total of 42 such channels 21 are provided, wherein the channels 21st are arranged spirally, namely so that in each case two adjacent channels 21 are rotated by an angle of 50 ° and axially offset by 3 mm.
  • FIGS. 2a and 2b Cross-sectional views of the grinding tool along a central cutting plane parallel to the axis of rotation 4 and to the longitudinal direction 26. It shows FIG. 2a ) the section in a perspective view and FIG. 2b ) the same section viewed from a direction perpendicular to the cross-sectional plane.
  • the grinding tool 1 also has a central bore 18 parallel to the axis of rotation 4, the bore 18 having a diameter 19 of 12 mm and a length 20 of 170 mm. Between the bore 18 and the cylindrical 5 and the conical grinding region 6 extend the channels 21, which - as already described - open into the grooves 23.
  • the grinding tool 1 has the following dimensions: the cylindrical grinding area 5 has a diameter 8 of 65 mm.
  • the diameter 7 of the conical grinding area 6 increases by 80 ⁇ m over the length 9 of the conical grinding area in the axial direction 26 relative to the diameter 8 of the cylindrical grinding area 5.
  • the cylindrical grinding portion 5 has a length 13 of 50 mm and the conical grinding portion 6 has a length 9 of 90 mm.
  • the thickness of the cylindrical and the conical grinding area is 300 ⁇ m.
  • FIG. 3 shows a further cross-sectional view of the grinding tool 1 along a plane in which one of the channels 21 between the central bore 18 and one of the grooves 23 extends.
  • FIG. 4 the combination of a grinding tool 1 and a so-called HSK adapter 17 is shown, which makes it possible in a simple manner to attach the grinding tool 1 to a machining head of a CNC machine.
  • the CNC machine can be a conventional three-axis machine.
  • the effective grinding area is composed of a cylindrical grinding area 5 with a length 13 and a diameter 8 and an axially adjoining conical grinding area 6 with a length 9 and a diameter 7, starting from the cylindrical grinding area 5 in axial direction 26 relative to the diameter 8 of the cylindrical grinding area 7 increases.
  • the total increase of the diameter 7 of the conical grinding area 6 at the free end 14 corresponds to twice the drawn distance 10.
  • the cone angle of the conical grinding area 6 is provided with the reference numeral 32.
  • FIGS. 6a) to 6f serves to illustrate an advantageous machining process of the inner surface 2 of a cylinder bore 3 in a workpiece, for example a motor block.
  • Schematically represented are respectively the views perpendicular to the cylinder bore and that of the side, which is the side from which the grinding tool 1, 27 or 28 (see FIGS. 7a, 7b . 8a and 8b ) is inserted into the bore opposite. So look at the free end of the grinding tool 1, 27 or 28.
  • the grinding tool 1, 27 or 28 is inserted substantially centrally and with the cylindrical and / or conical grinding area in the cylinder bore 3. Subsequently, the grinding tool 1, 27 or 28 is brought to the inner surface 2 of the cylinder bore 3, which is shown in part figure c). Thereafter, the grinding tool 1, 27 or 28 is guided at least once in a circle along the inner surface 2 of the cylinder bore 3, wherein it rotates about its axis of rotation 4. It should be noted that the grinding tool 1, 27 or 28 can also be set in rotation before or after the actual grinding process.
  • the grinding tool 1, 27 or 28 is lifted from the inner surface 2 of the cylinder bore 3 again, i. brought into an approximately central position with respect to the cylinder bore 3 (see Part Figure e)) and finally led out of the cylinder bore 3 (transition between the subfigures e) and f)).
  • arrows indicate a specific direction of movement of the grinding tool 1, 27 or 28 along the inner surface 2 of the cylinder bore 3 and a specific direction of rotation of the grinding tool 1, 27 or 28 about the axis of rotation 4. Basically, both directions of rotation are possible for these movements.
  • LDS stands for arc-wire spraying, which is a special plasma-phase coating process.
  • FIGS. 7a, 7b . 8a and 8b show advantageous embodiments of the inventive set, wherein in the FIGS. 7a and 7b the first grinding tool 27 and in the FIGS. 8a and 8b the second grinding tool 28 is shown - in the FIGS. 7a and 8a each together with an adapter 17 which is connected to a fastening means 16 in the form of a flange.
  • the first grinding tool 27 has a cylindrical grinding area 5 with a diameter 8 that is cylindrical relative to the axis of rotation 4.
  • the second grinding tool 28 has a grinding area 6 conical with respect to the rotation axis 4, wherein the diameter 7 of the conical grinding area 6 increases in the axial direction 26 starting from a smallest diameter 29 which corresponds to the diameter 8 of the cylindrical grinding area 5 of the first grinding tool 27.
  • the second grinding tool 28 has a grinding agent-free region 30. This is cylindrical with respect to the axis of rotation 4 with a reduced by 3 mm with respect to the smallest diameter 29 of the conical grinding portion 6 diameter 31.
  • the length of the abrasive-free region 30 of the second grinding tool 28 corresponds to the length 13 of the cylindrical grinding region 5 of the first grinding tool 27.
  • the total length of the second grinding tool 28 corresponds to the total length of the grinding tool 1, which has both the cylindrical grinding area 5 and the conical grinding area 6.
  • Both the first grinding tool 27 and the second grinding tool 28 have a central bore 18, which in each case extends almost over the entire grinding tool 27 or 28.
  • the lengths of the bore 18 is provided with the reference numerals 33 and 20, respectively.
  • the first grinding tool 27 and the second grinding tool 28 of the set have channels 21, which between the central bore 18 and the cylindrical grinding area 5 and the conical Grinding area 6 run. In the abrasive-free region 30 of the second grinding tool 28, no such channels 21 are provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP16162638.7A 2015-04-20 2016-03-29 Schleifwerkzeug Active EP3085492B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16162638T PL3085492T3 (pl) 2015-04-20 2016-03-29 Narzędzie ścierne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50309/2015A AT517140B1 (de) 2015-04-20 2015-04-20 Schleifwerkzeug

Publications (3)

Publication Number Publication Date
EP3085492A2 EP3085492A2 (de) 2016-10-26
EP3085492A3 EP3085492A3 (de) 2017-01-04
EP3085492B1 true EP3085492B1 (de) 2019-12-11

Family

ID=55637290

Family Applications (1)

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EP16162638.7A Active EP3085492B1 (de) 2015-04-20 2016-03-29 Schleifwerkzeug

Country Status (7)

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US (1) US10751849B2 (es)
EP (1) EP3085492B1 (es)
AT (1) AT517140B1 (es)
ES (1) ES2776228T3 (es)
HU (1) HUE048117T2 (es)
MX (1) MX2016005075A (es)
PL (1) PL3085492T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021004520A1 (de) 2021-09-07 2022-09-22 Mercedes-Benz Group AG Vorrichtung und Verfahren zum lnnenrund-Einstechschleifen
CN117226621B (zh) * 2023-11-15 2024-01-26 成都承奥科技有限公司 一种石墨环磨合机

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JPS63267168A (ja) 1987-04-21 1988-11-04 Mitsubishi Electric Corp 小孔加工用砥石
US4887221A (en) 1987-09-25 1989-12-12 Sunnen Products Company Computer controlled honing machine using look up table data for automatic programming
JP2004291226A (ja) 2003-03-11 2004-10-21 Fuji Seiko Ltd 加工工具
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US20070060025A1 (en) 2003-02-19 2007-03-15 Ulrich Haerer Method for finely processing a cylindrical inner surface
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WO2013114527A1 (ja) 2012-01-30 2013-08-08 株式会社 ダイニチ ホーニング工具

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JPS63267168A (ja) 1987-04-21 1988-11-04 Mitsubishi Electric Corp 小孔加工用砥石
US4887221A (en) 1987-09-25 1989-12-12 Sunnen Products Company Computer controlled honing machine using look up table data for automatic programming
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JP2004291226A (ja) 2003-03-11 2004-10-21 Fuji Seiko Ltd 加工工具
WO2006091169A2 (en) 2005-02-28 2006-08-31 Atlas Copco Secoroc Ab Grinding wheel
JP2007083323A (ja) 2005-09-20 2007-04-05 Denso Corp 円筒内周面研削加工方法
WO2013114527A1 (ja) 2012-01-30 2013-08-08 株式会社 ダイニチ ホーニング工具

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Also Published As

Publication number Publication date
AT517140B1 (de) 2017-02-15
AT517140A1 (de) 2016-11-15
PL3085492T3 (pl) 2020-06-01
MX2016005075A (es) 2016-10-19
HUE048117T2 (hu) 2020-05-28
US20160303700A1 (en) 2016-10-20
ES2776228T3 (es) 2020-07-29
EP3085492A2 (de) 2016-10-26
US10751849B2 (en) 2020-08-25
EP3085492A3 (de) 2017-01-04

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