EP2803445A1 - Dispositif pour l'usinage de finition à la bande d'une pièce - Google Patents

Dispositif pour l'usinage de finition à la bande d'une pièce Download PDF

Info

Publication number: EP2803445A1
Authority: EP; European Patent Office
Prior art keywords: pressing; workpiece; intermediate element; force; finishing
Prior art date: 2013-05-14
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

EP13167681.9A

Other languages

German (de)

English (en)

Other versions

EP2803445B1 (fr

Inventor

Oliver Hildebrandt

Simon Wolber

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.)

Supfina Grieshaber GmbH and Co KG

Original Assignee

Supfina Grieshaber GmbH and Co 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.)

2013-05-14

Filing date

2013-05-14

Publication date

2014-11-19

2013-05-14 Application filed by Supfina Grieshaber GmbH and Co KG filed Critical Supfina Grieshaber GmbH and Co KG

2013-05-14 Priority to EP13167681.9A priority Critical patent/EP2803445B1/fr

2014-03-31 Priority to CN201480024936.6A priority patent/CN105163905B/zh

2014-03-31 Priority to PCT/EP2014/056396 priority patent/WO2014183914A1/fr

2014-03-31 Priority to BR112015028594-5A priority patent/BR112015028594B1/pt

2014-03-31 Priority to US14/890,947 priority patent/US10058971B2/en

2014-11-19 Publication of EP2803445A1 publication Critical patent/EP2803445A1/fr

2015-07-08 Application granted granted Critical

2015-07-08 Publication of EP2803445B1 publication Critical patent/EP2803445B1/fr

Status Active legal-status Critical Current

2033-05-14 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- 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

Definitions

the invention relates to a device for belt-finishing of a workpiece, with a holding device for holding at least one pressing element, and with a finishing belt, which is pressed at the level of the pressure element by means of the pressing element against a finish to be machined workpiece surface.
Finish finishing of a workpiece is a method of surface machining a workpiece, also referred to as "superfinishing” or “microfinishing”.
an abrasive finishing tool such as a finishing stone or a finishing belt, pressed onto the workpiece surface to be machined.
the workpiece surface to be machined rotates. This rotation of the editable Workpiece surface is superimposed on an oscillating movement, in which the finishing tool and the workpiece surface to be machined move in directions parallel to the axis of rotation relative to each other.
the DE 20 2010 006 480 U1 suggests the use of rigid or relatively soft and resilient pressing elements.
the use of rigid pressure elements has the advantage that inaccuracies of an initial geometry of a workpiece to be machined can be at least partially compensated. However, such compensation is limited by the elasticity of the finishing tape.
the use of soft and resilient pressure elements allows a surface contact of the finishing tape to the workpiece, but has the disadvantage that the pressure elements can deform greatly especially in the range of oil outlet holes of a crankshaft and cause excessive material removal in this area.
the oscillating and rotating movement of the workpiece causes a relatively strong deformation of a soft pressing element, which complicates the dimensionally accurate machining of a workpiece.
the present invention has the object to improve a device of the type mentioned so that independently of the initial geometry of a workpiece surface to be machined high pressure forces can be provided.
a flexurally elastic intermediate element which transmits a pressing force of the pressing member by means of a force receiving surface and by means of a force transmission surface on the finishing belt.
a flexurally elastic intermediate element is provided, which is arranged between a pressing portion of the pressure element and the finishing tape.
a force exerted on the holding means is thus not transmitted directly from the pressing portion of the pressing member to the back of a finishing tape, but with the interposition of the intermediate element.
This has a force receiving surface, which is acted upon by the pressing portion of the pressing member and a force transmission surface, which transmits a force to the back of the finishing tape.
the finishing tape points an abrasive front side, which then removes material when placed against a workpiece.
the device according to the invention enables a good contact of the finishing strip to the shape of the workpiece and a uniform distribution of the pressing force.
the force receiving surface and the force transmission surface are formed by mutually remote sides of a leaf-shaped portion of the intermediate element.
a leaf-shaped section is understood to mean an intermediate element which has substantially parallel force-receiving surfaces and force-transmitting surfaces, which are spaced apart by a maximum of 2 mm, in particular a maximum of 1 mm.
Such a sheet-shaped section has the advantage that the intermediate element beyond a line contact allows a flat contact with the back of the finishing tape.
the intermediate element is preferably made of a metallic material, in particular of spring steel. As a result, high pressure forces can be transferred to a finishing belt.
the force-receiving surface and / or the force transmission surface of the intermediate element have a friction-increasing surface structure (for example a roughening with a roughness depth of at least 0.05 mm). and / or a friction-increasing coating (in particular a diamond layer, preferably applied by electroplating) or have.
a friction-increasing surface structure for example a roughening with a roughness depth of at least 0.05 mm
a friction-increasing coating in particular a diamond layer, preferably applied by electroplating
the intermediate element is preferably made of a harder material than the pressing portion of the pressing element cooperating with the force receiving surface of the intermediate element. In this way, higher pressure forces can be provided by means of the intermediate element than by a comparatively soft pressing portion of the pressure element. As a result, the processing times can be shortened. At the same time, however, the intermediate element can be acted upon geometrically flexible with a pressing force. Thus, inaccuracies of an initial geometry of a workpiece to be machined can be compensated within short processing times.
the pressing portion of the pressure element or the entire pressure element is preferably made of a plastic material, in particular of an elastomer.
a pressing portion or such a pressing element allows a geometrically flexible abutment of a pressing surface of the pressing element against the force receiving surface of the intermediate element.
the pressure element is preferably movable relative to the holding device about an axis which is parallel to the force transmission surface and parallel to a workpiece surface to be machined with respect to the finish tangential direction runs.
This type of storage allows tilting of the pressing element, so that the pressing elements can align themselves with the workpiece geometry and so that axis errors of the bearing seats of the workpiece can be compensated.
the force transmission surface is essentially flat in an undeformed initial state and has a curvature that is equivalent to the workpiece surface when a pressing force is transmitted.
the intermediate element is fixed, for example, to the holding device, so that it can be retrofitted or removed, for example, for certain applications again.
the intermediate element encase the pressure element, which has the advantage that the pressure element and the intermediate element can be provided as a structural unit.
the different pressing elements associated force transmission surfaces of the intermediate element or a plurality of intermediate elements to each other are aligned substantially V-shaped.
Two mutually adjacent force transmission surfaces viewed in the circumferential direction of the workpiece, can span between them an angle of approximately 50 ° to approximately 130 °, preferably of approximately 70 ° to approximately 110 °, in particular of approximately 80 ° to approximately 100 ° , As a result, different workpieces can be machined, the diameter of which deviates greatly from one another, for example by up to 10 mm or even by up to 20 mm or even by more than 20 mm.
a particularly high degree of flexibility with regard to the diameter range of the workpieces to be machined results when the mutually adjacent force transmission surfaces are substantially planar, at least in an undeformed initial state.
a further improved conditioning of the finishing strip on a workpiece results when the holding device is mounted pivotably on a carrier about a pivot axis extending parallel to a workpiece axis.
spring units are provided for aligning the holding device in a center-pivoting position.
This Way can be defined a preferred position of the holding device relative to the carrier.
two holding devices are provided, each with two pressing elements, wherein the total of four pressing elements are arranged distributed over the circumference of the workpiece surface.
pressing forces can be transmitted to a workpiece via a finishing belt from four different radial directions.
two mutually oppositely arranged pressing elements with mutually opposing pressure forces act on the workpiece, so that it is stored stable despite rotation and superimposed oscillation within the two holding devices.
An embodiment of a device is used for the processing of a workpiece 12, for example a crankshaft, in a bandfinishing manner.
the workpiece 12 has a workpiece axis 14 and a workpiece surface 16 to be finish-machined.
a finishing belt 18 is provided, which abuts along a partial circumference of the workpiece surface 16 at this.
the workpiece surface 16 is, for example, the bearing seat of a crankshaft.
a rotary drive sets the workpiece 12 in a rotational movement about the workpiece axis 14.
An oscillating drive moves the workpiece 12 in parallel to the workpiece axis 14 oscillating in opposite directions.
the finishing belt 18 produces a cross-cut structure characteristic of the finish-end machining by abrasive abutment of the front side of the finish belt on the workpiece surface 16.
the device 10 further comprises a carrier 20 for connection to one in the FIGS. 8 and 9 Pressing tongs 22 shown in sections.
the carrier 20 has a pivot bearing 24 for supporting a holding device 26 about a pivot axis 28.
the holding device 26 is held on the carrier 20 in a pivoting means position, by means of spring units 30 and 32, which are arranged on both sides of the pivot bearing 24 and act as a function of a pivoting direction of the holding device 26 each as a compression spring.
the holding device 26 has a cup-shaped holding part 34 with mutually angled receptacles 36 for receiving a single in FIG. 2 shown assembly 38.
the assembly 38 comprises an approximately cuboidal or cube-shaped pressure element 40, for example, with a pressing portion 42 pointing in the direction of the finishing belt 18 when arranged in the receptacle 36.
the assembly 38 further includes an intermediate member 44 having a blade-shaped portion 46 which cooperates with the pressing portion 42 of the pressing member 40.
the leaf-shaped section 46 has a force-receiving surface 48 facing the pressing section 42 and a force-transmitting surface 50 facing the rear side of the finishing strip 18.
the leaf-shaped section 46 is preferably made of a hardened spring steel and preferably has a material thickness of not more than 1 mm, in particular of not more than 0.5 mm.
the intermediate element 44 has, starting from the leaf-shaped portion 46 extending, lateral portions 52 and 54, which surround the pressure element 40 together with the leaf-shaped portion 46.
undercut sections 56 and 58 extending from the lateral sections 52, 54 may be provided.
the assemblies 38 are immovably received in the receptacles 36 of the holding device 26. But it is also possible that the assemblies 38 are mounted relative to the holding device 26 about axes 60 movable.
the axes 60 are perpendicular to the workpiece axis 14 and parallel to a plane in which the force transmission surface 50 of the intermediate member 44 extends. Thus, the assemblies 38 may tilt about the axes 60 and align with the geometry of the workpiece 12. A compensation of axis errors of bearing seats of the workpiece 12 is possible.
the pressing elements and possibly also the intermediate member 44 have a parallel to the axis 60 extending opening 62, the passage of a (for example in FIG. 7 shown) bearing pin 64 serve.
the holding device 26 also serves for the attachment of tape guide elements 66 and 68 with rounded Tape guide surfaces, such as a tape insertion surface 70 and a belt guide surface 72nd
fastening elements for example screws 74 (cf. FIG. 4 ) be provided.
the finishing belt 18 is pressed against the workpiece surface 16 of the workpiece 12 by means of the assemblies 38.
a pressing force provided by means of a gun arm 22 is transmitted via the carrier 20 and the holding device 26 to the assemblies 38.
the pressing member 40 transmits a pressing force by means of the pressing portion 42 on the force receiving surface 48 of the sheet-shaped portion 46 of the intermediate member 44. This in turn transmits the pressing force by means of the force transmission surface 50 on a back of the finishing tape 18, which then with an abrasive front side with the workpiece surface 16 of the Workpiece 12 cooperates.
the assemblies 38 generate pressing forces acting in the radial direction, that is to say pressing forces which are directed in the direction of the workpiece axes 14 of the workpiece 12.
the pressing element 40 of the assembly 38 is made, for example, of a plastic material, preferably of an elastomer.
a suitable plastic is polyester-urethane rubber, which is also known under the trade name "Vulkollan" of Bayer AG, Leverkusen, Germany.
the entire pressure element 40 it is possible for the entire pressure element 40 to be made of a softer material is made as the intermediate element 44, as for example in the FIGS. 1 to 3 is shown.
only one pressing portion 42 of the pressing member 40 is made of a softer material than the leaf-shaped portion 46 of the intermediate member 44 (see. FIG. 4 ).
a pressing portion 142 is provided, which has a force receiving surface 48 of the intermediate member 44 facing the free space 144.
the clearance 144 is seen laterally bounded in the course of the finishing belt 18 by elevated portions 146 and allows a flexurally elastic deflection of the intermediate member 44 in the space 144 inside.
the leaf-shaped portion 46 of the intermediate member 44 extends in an undeformed initial state in a straight plane.
the leaf-shaped section 46 flexes elastically so that the leaf-shaped section 46 and thus also the force transmission surface 50 curve according to the curvature of the workpiece surface 16. In this way, the contact area between the sheet-shaped section 46 and the finishing belt 18 and thus between the finishing belt 18 and the workpiece surface 16 can be increased.
an intermediate element 44 is assigned to a pressure element 40 in each case. It is also possible that an intermediate element 44 is provided, which is a plurality of pressing elements 40, preferably exactly two Pressing elements, 40 is assigned. This will be described below with reference to the FIGS. 6 and 7 illustrated embodiment described.
An intermediate element 44 which is assigned to a plurality of pressing elements 40, has a number of leaf-shaped sections 46 corresponding to the number of pressing elements 40, for example a first leaf-shaped section 46a and a second leaf-shaped section 46b provided spatially separately therefrom (cf. FIG. 6 ).
the sections 46a and 46b are connected to each other by means of a connecting section 76, which is spaced apart from a workpiece surface 16 to be machined.
the connecting portion 76 is connected to the holding device 26 by means of a connecting element 78.
the sections 46a and 46b each have on their side facing away from the connecting portion 76 side end portions 80 and 82, respectively.
the end-side sections 80 and 82 are likewise arranged at a distance from the workpiece surface 16 to be machined and preferably themselves fixed to the holding device 26, for example by means of the bearing pins 64, which also serve to provide the above-described tilted mounting of the pressing elements 40 relative to the holding device 26.
the leaf-shaped sections 46a and 46b extend with their respective force transmission surfaces 50 in each case in straight planes. These planes are oriented at an angle of 90 ° +/- 20 °, in particular of 90 ° +/- 10 °, relative to each other. This angular arrangement of the straight planes allows machining of workpieces 12 with different diameters. This is in FIG. 6 based a smaller workpiece 12 (I) and illustrated by a larger workpiece 12 (II).
two of the devices 10 described above are preferably used, which are each connected to a gun arm 22 (see FIG. FIGS. 8 and 9 ).
a common finishing belt 18, which is supplied from a finishing belt supply 84 of a first device 10a and via a deflection 86 to a second device 10b and finally to a finishing belt collector 88.
the pliers arms 22 are pivotally mounted in a conventional manner.
the forceps arms 22 at the height of the workpiece 12 (I) have a smaller distance relative to each other than when machining a comparatively larger workpiece 12 (II), cf. FIGS. 8 and 9 ,

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

EP13167681.9A 2013-05-14 2013-05-14 Dispositif pour l'usinage de finition à la bande d'une pièce Active EP2803445B1 (fr)

Priority Applications (5)

Application Number	Priority Date	Filing Date	Title
EP13167681.9A EP2803445B1 (fr)	2013-05-14	2013-05-14	Dispositif pour l'usinage de finition à la bande d'une pièce
CN201480024936.6A CN105163905B (zh)	2013-05-14	2014-03-31	用于带式精加工工件的装置
PCT/EP2014/056396 WO2014183914A1 (fr)	2013-05-14	2014-03-31	Dispositif d'usinage de finition d'une pièce au moyen d'une bande
BR112015028594-5A BR112015028594B1 (pt)	2013-05-14	2014-03-31	Dispositivo para a usinagem de acabamento de uma peqa
US14/890,947 US10058971B2 (en)	2013-05-14	2014-03-31	Device for band finishing a workpiece

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP13167681.9A EP2803445B1 (fr)	2013-05-14	2013-05-14	Dispositif pour l'usinage de finition à la bande d'une pièce

Publications (2)

Publication Number	Publication Date
EP2803445A1 true EP2803445A1 (fr)	2014-11-19
EP2803445B1 EP2803445B1 (fr)	2015-07-08

Family

ID=48444145

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP13167681.9A Active EP2803445B1 (fr)	2013-05-14	2013-05-14	Dispositif pour l'usinage de finition à la bande d'une pièce

Country Status (5)

Country	Link
US (1)	US10058971B2 (fr)
EP (1)	EP2803445B1 (fr)
CN (1)	CN105163905B (fr)
BR (1)	BR112015028594B1 (fr)
WO (1)	WO2014183914A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3135433A2 (fr)	2015-08-27	2017-03-01	Supfina Grieshaber GmbH & Co. KG	Unite de traitement de surfaces circonferentielles, machine-outil et procede de fonctionnement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN107443217A (zh) *	2017-08-07	2017-12-08	周强造	一种内衣背扣打磨装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0161748A2 (fr)	1984-05-07	1985-11-21	Industrial Metal Products Corporation	Appareil et procédé pour le microfinissage de surfaces
DE4419366A1 (de) *	1994-06-03	1995-12-07	Otmar Fahrion	Finishmaschine
DE10332605A1 (de) *	2003-07-17	2005-02-17	Ibz Gmbh	Anpressvorrichtung für eine Oberflächenbearbeitungsvorrichtung
DE202010006480U1 (de)	2010-04-30	2010-08-05	Nagel Maschinen- Und Werkzeugfabrik Gmbh	Andrückeinrichtung zum Andrücken von Schneidmittel, Trägerkassette für eine solche Andrückeinrichtung sowie Vorrichtung mit einer solchen Andrückeinrichtung
EP2212058B1 (fr)	2007-10-16	2011-07-13	Nagel Maschinen- und Werkzeugfabrik GmbH	Dispositif de pression d'éléments coupants, dispositif et procédé de finition de surfaces périphériques de parties cylindriques de pièces d'usinage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2320345A1 (de) *	1973-04-21	1974-11-07	Karl Heesemann	Bandschleifmaschine
DE19622116C2 (de) *	1995-07-22	2000-08-03	Federal Mogul Burscheid Gmbh	Kurzhub-Bandhonen von Kolbenringlaufflächen
US20020086627A1 (en) *	2001-01-03	2002-07-04	Andrews William L.	Flex plate attachment for use with belt sanders
CN102781625B (zh) *	2011-02-24	2015-08-12	日本精工株式会社	内外轮兼用超精加工盘

2013
- 2013-05-14 EP EP13167681.9A patent/EP2803445B1/fr active Active
2014
- 2014-03-31 WO PCT/EP2014/056396 patent/WO2014183914A1/fr not_active Ceased
- 2014-03-31 BR BR112015028594-5A patent/BR112015028594B1/pt active IP Right Grant
- 2014-03-31 CN CN201480024936.6A patent/CN105163905B/zh active Active
- 2014-03-31 US US14/890,947 patent/US10058971B2/en active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0161748A2 (fr)	1984-05-07	1985-11-21	Industrial Metal Products Corporation	Appareil et procédé pour le microfinissage de surfaces
DE4419366A1 (de) *	1994-06-03	1995-12-07	Otmar Fahrion	Finishmaschine
DE10332605A1 (de) *	2003-07-17	2005-02-17	Ibz Gmbh	Anpressvorrichtung für eine Oberflächenbearbeitungsvorrichtung
EP2212058B1 (fr)	2007-10-16	2011-07-13	Nagel Maschinen- und Werkzeugfabrik GmbH	Dispositif de pression d'éléments coupants, dispositif et procédé de finition de surfaces périphériques de parties cylindriques de pièces d'usinage
DE202010006480U1 (de)	2010-04-30	2010-08-05	Nagel Maschinen- Und Werkzeugfabrik Gmbh	Andrückeinrichtung zum Andrücken von Schneidmittel, Trägerkassette für eine solche Andrückeinrichtung sowie Vorrichtung mit einer solchen Andrückeinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3135433A2 (fr)	2015-08-27	2017-03-01	Supfina Grieshaber GmbH & Co. KG	Unite de traitement de surfaces circonferentielles, machine-outil et procede de fonctionnement
DE102015216357A1 (de)	2015-08-27	2017-03-02	Supfina Grieshaber Gmbh & Co. Kg	Umfangsflächenbearbeitungseinheit, Werkzeugmaschine und Verfahren zum Betrieb

Also Published As

Publication number	Publication date
CN105163905A (zh)	2015-12-16
EP2803445B1 (fr)	2015-07-08
US10058971B2 (en)	2018-08-28
BR112015028594A2 (pt)	2017-07-25
BR112015028594B1 (pt)	2020-11-24
CN105163905B (zh)	2016-08-24
US20160101496A1 (en)	2016-04-14
WO2014183914A1 (fr)	2014-11-20

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