EP3085492A2 - Outil de rectification - Google Patents

Outil de rectification Download PDF

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Publication number
EP3085492A2
EP3085492A2 EP16162638.7A EP16162638A EP3085492A2 EP 3085492 A2 EP3085492 A2 EP 3085492A2 EP 16162638 A EP16162638 A EP 16162638A EP 3085492 A2 EP3085492 A2 EP 3085492A2
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding tool
cylindrical
cylinder bore
tool
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.)
Granted
Application number
EP16162638.7A
Other languages
German (de)
English (en)
Other versions
EP3085492B1 (fr
EP3085492A3 (fr
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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=55637290&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3085492(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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/fr
Publication of EP3085492A3 publication Critical patent/EP3085492A3/fr
Application granted granted Critical
Publication of EP3085492B1 publication Critical patent/EP3085492B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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, a grinding tool for a set according to the invention as a second grinding tool, the use of a grinding tool according to the invention or one of the two grinding tools of the invention Sets in a machining process of the inner surface of a cylinder bore in a workpiece, and 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 adapted to perform the machining process automatically.
  • 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 conical grinding area cylindrical and axially adjacent thereto, and the diameter of the conical grinding area increases from the cylindrical grinding area in the axial direction with respect to the diameter of the cylindrical grinding area.
  • a machining process of the inner surface of a cylinder bore in a workpiece, such as an engine block, could thus look like that the grinding tool is introduced with its cylindrical and subsequent conical grinding area in the cylinder bore, is brought to the inner surface of the cylinder bore, at least once in a circle is guided along the inner surface of the cylinder bore, wherein it is 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 first grinding tool has a grinding area with a diameter cylindrical relative to the rotation axis
  • the second grinding tool has a grinding area conical with respect to the rotation axis, wherein the diameter of the conical grinding area starting from a smallest diameter corresponds to the diameter of the cylindrical grinding portion of the first grinding tool, increases in the axial direction.
  • a machining process of the inner surface of a cylinder bore in a workpiece could look like that first the second grinding tool with the conical Grinding area is introduced into 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 rotates about its axis of rotation, is lifted from the inner surface of the cylinder bore and is led out again from the cylinder bore , In a subsequent step, 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.
  • kits according to the invention are defined in the dependent claims 2 to 4, 5 to 7 and 9 to 16.
  • 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 °.
  • 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 17, 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 17 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.
  • 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 21 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.
  • 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 bore 18, the channels 21, and the grooves 23 form a total of a coolant guide, which makes it possible, a centrally fed Coolant in an efficient manner to the work area, ie to guide the cylindrical and conical grinding area 6 and distribute there.
  • the grinding machine train 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 Outil de rectification Active EP3085492B1 (fr)

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 true EP3085492A2 (fr) 2016-10-26
EP3085492A3 EP3085492A3 (fr) 2017-01-04
EP3085492B1 EP3085492B1 (fr) 2019-12-11

Family

ID=55637290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16162638.7A Active EP3085492B1 (fr) 2015-04-20 2016-03-29 Outil de rectification

Country Status (7)

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

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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Also Published As

Publication number Publication date
US20160303700A1 (en) 2016-10-20
AT517140B1 (de) 2017-02-15
HUE048117T2 (hu) 2020-05-28
ES2776228T3 (es) 2020-07-29
US10751849B2 (en) 2020-08-25
EP3085492B1 (fr) 2019-12-11
EP3085492A3 (fr) 2017-01-04
AT517140A1 (de) 2016-11-15
MX2016005075A (es) 2016-10-19
PL3085492T3 (pl) 2020-06-01

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