EP3181293A1 - Outil de finition à capacité de coupe variable localement - Google Patents
Outil de finition à capacité de coupe variable localement Download PDFInfo
- Publication number
- EP3181293A1 EP3181293A1 EP16202745.2A EP16202745A EP3181293A1 EP 3181293 A1 EP3181293 A1 EP 3181293A1 EP 16202745 A EP16202745 A EP 16202745A EP 3181293 A1 EP3181293 A1 EP 3181293A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- peripheral surface
- profile shape
- finishing
- workpiece
- 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
Links
- 238000005520 cutting process Methods 0.000 title claims description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 238000003754 machining Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 7
- 238000007730 finishing process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
- B24B5/26—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding peculiarly profiled surfaces, e.g. bulged
-
- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips
-
- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
-
- 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
- B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
-
- 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
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/04—Zonally-graded surfaces
Definitions
- the present invention relates to an apparatus and a method for finishing a peripheral surface of a wave-shaped workpiece. Furthermore, the invention relates to a use of a tool for finishing a peripheral surface of a wave-shaped workpiece.
- the device comprises a drive device for generating a rotational movement of the workpiece and a pressing device for pressing a tool against the peripheral surface of the rotating workpiece, wherein the tool rests with a processing surface on the peripheral surface and the peripheral surface has a first profile shape.
- EP 0 802 017 A1 A device with the aforementioned features is made EP 0 802 017 A1 known.
- a finishing belt is pressed as a tool by means of a pressure shoe to the peripheral surface of the rotating workpiece.
- the peripheral surface has a cylindrical contour with a straight profile shape before and after the finishing.
- the peripheral surface in the region of bearings has a spherical shape.
- a crowned shape of the bearing points can already be achieved by a corresponding machining pre-processing, during the pre-machining the crowned shape is generated by a machining surface of a grinding wheel machining the bearing a the crown has corresponding transverse shape.
- This procedure has the disadvantage that different grinding wheels also have to be used for different degrees of crowning.
- a corresponding grinding wheel must be held and when changing the crown profile, the grinding wheel must be replaced.
- the corresponding grinding wheels must also be dressed regularly due to wear, resulting in additional costs.
- the object of the present invention is therefore to solve the problems described with reference to the prior art and, in particular, to provide a device, a method and a use with which the profile shape of the circumferential surfaces during the finishing process can be modified in a cost-effective manner, inter alia with existing machines can be.
- the object is achieved in particular by a device having the features mentioned above, wherein the working surface has areas of different cutting and a spatial distribution of the cut defines a second finish intended after the finishing, the profile shape of the peripheral surface being different from the first profile shape.
- the present invention thus differs in its basic idea from the previous technical teaching, according to which a change of the.
- the invention provides that a change in the profile shape is achieved deliberately by a targeted spatial distribution of the cutting of the tool used for finishing. In the areas with which more material is to be removed from the peripheral surface of the workpiece, the tool thus has a higher cutting capacity than in the areas with which less material is to be removed.
- Such tools can be easily used in conventional finishing equipment.
- the invention also has the advantage that due to the desired change in the profile shape during the finishing process, a change in the profile shape during machining can be dispensed with, so that the pre-machining can always be carried out with the same grinding wheel having a straight transverse shape.
- the tool is preferably a finishing stone, which is pressed by a pressing device to the peripheral surface of the workpiece.
- the tool is a finishing belt, which is pressed by means of a pressure shoe to the peripheral surface and which has already been replaced regularly as a consumable material. Since the profile shape to be achieved after the finish machining depends on the distribution of the cut on the finishing stone or the finishing belt, the geometry of the working surface of the finishing stone or the pressing surfaces of the pressure belt pressing the finishing belt is preferably rectilinear in a direction parallel to the axis of rotation of the workpiece. The so-called transverse shape of the finishing stone or the pressure shoe is thus in particular straight. A conventional pressure shoe can therefore be used in combination with corresponding finishing tapes for producing different profile shapes.
- the local section, in particular of the grains of the tool is thus distributed over the tool that during the finishing, the first (initial) profile shape is changed to the second (end) profile shape.
- more material is removed during rotation of the workpiece at at least one axial point of the workpiece than at a further axial point offset parallel to the axis of rotation.
- the tool does not execute any movement in the axial direction of the workpiece during the rotation of the workpiece.
- an oscillation drive device for generating a transverse to the rotational movement of the peripheral surface directed oscillating relative movement between the peripheral surface of the workpiece and the tool is formed, wherein the tool rests with the processing surface during the relative movement of the peripheral surface of the workpiece.
- the cutting edge of the machining surface of the tool is greatest at the edges of the processing surface and is smaller in the middle.
- the cutting edge of the working surface of the tool is secured to edges of the tool Machining surface is lowest and in the middle is the largest.
- the edges refer to the edges in the axial direction of the workpiece, while the center is arranged between the edges.
- the intersection of the working surface of the tool has at least three local maxima or minima transversely to the direction of the rotational movement of the peripheral surface. At these three local maxima so most material is removed from the peripheral surface of the workpiece.
- the machining surface of the tool resting against the peripheral surface of the workpiece has at least one first region with a first intersection and at least one second region with a second intersection which differs from the first intersection.
- the working surface has the same local section in the entire first section and a second section which deviates therefrom in the entire second section.
- the second cut can also be "0".
- the second region of the processing surface then lies between two first regions of the processing surface. The desired distribution of the cut is then achieved by the local arrangement of the first area to the second area.
- a dividing line between the first region and the second region extends in a zigzag shape along the direction of the rotational movement of the peripheral surface.
- this dividing line could also be wavy.
- the cut can also change with a constant gradient. It must therefore be formed no discrete areas with different local skills.
- the tool can be kept stationary during the finishing in the axial direction of the workpiece. Alternatively it can be provided that an oscillating relative movement between the rotating workpiece and the tool is generated.
- one of the tools described above can be used to carry out the method according to the invention.
- the above-mentioned object is also achieved by the use of a tool for finishing a peripheral surface of a wave-shaped workpiece, wherein the peripheral surface has a first profile shape and the working surface of the tool has areas of different cutting, wherein a spatial distribution of the cut intended after finishing, second, of the first profile shape specifies different profile shape of the peripheral surface.
- the tool is a finishing belt, which is pressed by means of a pressure shoe to the peripheral surface of the workpiece, or a finishing stone.
- a tool may be used which has the features described above.
- FIG. 1 shows a portion of a workpiece 1 with a cylindrical peripheral surface 2 before finishing.
- the profile shape of the peripheral surface 2 is rectilinear.
- a tool 4 is pressed by means of a pressing device 3 with its machining surface 5 on the peripheral surface 2 of the workpiece 1.
- the workpiece 1 rotates about its axis of rotation and the tool 4 remains stationary.
- the tool 4 may in particular be formed by a finishing stone, which is pressed with its working surface directly on the peripheral surface 2.
- the tool 4 may be formed by a finishing tape, which is pressed by means of a pressure shoe to the peripheral surface 2.
- the tool 4 oscillates with the pressing device in the axial direction parallel to the axis of rotation of the workpiece 1 while the workpiece 1 is rotating.
- FIG. 4 Above is now a plan view of a finishing belt 10 is shown, which is pressed by means of a pressure shoe to the peripheral surface 2 of the workpiece 1.
- the finishing belt 10 has first regions 6 with a high local section and second sections 7 with a relatively lower local section. If the finishing belt 10 is applied to the rotating workpiece 1 during finishing, the resulting material-removing cut is greater at edges 8 than at the center 9 of the finishing belt 10.
- a pressing shoe which presses the finishing belt 10 and whose pressing surface is rectilinear can also be used History transverse to the rotational direction of the workpiece 1, a change in the profile of the workpiece 1 are produced.
- a finished with the finishing tape 10 workpiece 1 is in FIG. 4 shown below. It It can be seen that the peripheral surface 2 of the workpiece 1 after finishing has a slightly spherical profile shape.
- FIG. 5 Compared to the embodiment according to FIG. 4 is in the embodiment of the FIG. 5 another arrangement of the local intersections of the first regions 6 and the second regions 7 given. By such an arrangement, a greater crowning can be achieved by the finishing, as it at the portion of the workpiece 1 in FIG. 5 is indicated below.
- FIGS. 6 and 7 Further examples of the arrangement of the first region 6 and the second region 7 are in FIGS FIGS. 6 and 7 shown. As far as the dividing line between the first regions 6 and the second regions 7 according to the embodiments of the FIGS. 4 and 5 runs zigzag, the dividing line between the first region 6 and the second region 7 according to the embodiment of the FIG. 7 wavy. In the embodiment according to FIG. 6 On the other hand, the first region 6 is continuous and in this first region 6 a plurality of uniform second regions 7 are arranged.
- the invention thus provides that the cutting ability of the tool is distributed on the working surface in such a way that a profile shape deviating from the original profile shape is achieved by the cutting action during manufacture.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015122189.6A DE102015122189A1 (de) | 2015-12-18 | 2015-12-18 | Finishwerkzeug mit lokal variierender Schnittigkeit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3181293A1 true EP3181293A1 (fr) | 2017-06-21 |
EP3181293B1 EP3181293B1 (fr) | 2022-10-12 |
Family
ID=57517816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16202745.2A Active EP3181293B1 (fr) | 2015-12-18 | 2016-12-07 | Outil de finition à capacité de coupe variable localement |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3181293B1 (fr) |
DE (1) | DE102015122189A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX2020009155A (es) * | 2018-03-14 | 2020-12-03 | Mirka Ltd | Método y aparato para erosionar y los productos y usos de éste. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4240232A (en) * | 1977-12-30 | 1980-12-23 | Giddings & Lewis, Inc. | Coated abrasive superfinishing stone and method of making same |
JPH03130367U (fr) * | 1990-04-10 | 1991-12-27 | ||
EP0802017A1 (fr) | 1996-04-19 | 1997-10-22 | Ernst Thielenhaus Kg | Dispositif pour le rodage d'arbres, en particulier de vilebrequins |
JP2003071702A (ja) * | 2001-09-05 | 2003-03-12 | Nsk Ltd | 玉軸受軌道面の超仕上加工方法および超仕上研削構造体 |
WO2015197449A1 (fr) * | 2014-06-23 | 2015-12-30 | Nagel Maschinen- Und Werkzeugfabrik Gmbh | Outil de finition |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19850216A1 (de) * | 1998-10-31 | 2000-05-04 | Nagel Masch Werkzeug | Verfahren und Vorrichtung zur Feinbearbeitung von im wesentlichen zylindrischen Werkstückoberflächen |
FR2808463B1 (fr) * | 2000-05-04 | 2002-09-13 | Procedes Et Machines Speciales | Machine d'usinage par bande abrasive de portees cylindriques sur des pieces |
JP2003089047A (ja) * | 2001-09-18 | 2003-03-25 | Nissan Motor Co Ltd | 曲面仕上げ加工方法および曲面仕上げ加工装置 |
CN2880385Y (zh) * | 2006-02-21 | 2007-03-21 | 江宪宗 | 一种砂带 |
FI129203B (en) * | 2015-06-05 | 2021-09-15 | Kwh Mirka Ltd | Abrasive product, method of making it, and its belt and roller |
-
2015
- 2015-12-18 DE DE102015122189.6A patent/DE102015122189A1/de active Pending
-
2016
- 2016-12-07 EP EP16202745.2A patent/EP3181293B1/fr active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4240232A (en) * | 1977-12-30 | 1980-12-23 | Giddings & Lewis, Inc. | Coated abrasive superfinishing stone and method of making same |
JPH03130367U (fr) * | 1990-04-10 | 1991-12-27 | ||
EP0802017A1 (fr) | 1996-04-19 | 1997-10-22 | Ernst Thielenhaus Kg | Dispositif pour le rodage d'arbres, en particulier de vilebrequins |
JP2003071702A (ja) * | 2001-09-05 | 2003-03-12 | Nsk Ltd | 玉軸受軌道面の超仕上加工方法および超仕上研削構造体 |
WO2015197449A1 (fr) * | 2014-06-23 | 2015-12-30 | Nagel Maschinen- Und Werkzeugfabrik Gmbh | Outil de finition |
Also Published As
Publication number | Publication date |
---|---|
DE102015122189A1 (de) | 2017-06-22 |
EP3181293B1 (fr) | 2022-10-12 |
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