DE29903526U1 - Device for milling workpieces with rotating surfaces - Google Patents
Device for milling workpieces with rotating surfacesInfo
- Publication number
- DE29903526U1 DE29903526U1 DE29903526U DE29903526U DE29903526U1 DE 29903526 U1 DE29903526 U1 DE 29903526U1 DE 29903526 U DE29903526 U DE 29903526U DE 29903526 U DE29903526 U DE 29903526U DE 29903526 U1 DE29903526 U1 DE 29903526U1
- Authority
- DE
- Germany
- Prior art keywords
- milling
- cutting
- cutting plate
- cutter holder
- milling cutter
- 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.)
- Expired - Lifetime
Links
- 238000003801 milling Methods 0.000 title claims description 33
- 238000003466 welding Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
- B23B5/166—Devices for working electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/402—Non-consumable electrodes; C-electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0205—Non-consumable electrodes; C-electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
- Milling Processes (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
BeschreibungDescription
Vorrichtung zum Fräsen von Werkstücken mit RotationsflächenDevice for milling workpieces with rotating surfaces
Die Erfindung betrifft eine Vorrichtung zum Fräsen von Werkstücken mit Rotationsflächen, insbesondere von Elektrodenkappen aus Kupfer und Kupferlegierungen für die Widerstandsschweißtechnik. The invention relates to a device for milling workpieces with rotating surfaces, in particular electrode caps made of copper and copper alloys for resistance welding technology.
Die folgenden Ausführungen sind auf das Fräsen von Elektrodenkappen abgestellt, doch ist die Anwendung der Vorrichtung nicht auf dieses Einsatzgebiet beschränkt. Elektroden für die Widerstandsschweißtechnik, die in Roboter- und Handschweißzangen eingesetzt werden, müssen in Abhängigkeit vom Verschleiß an den Kappen nachgearbeitet werden, um die Reproduzierbarkeit, Zuverlässigkeit und Festigkeit der Schweißpunkte zu gewährleisten.The following explanations are based on the milling of electrode caps, but the application of the device is not limited to this area of application. Electrodes for resistance welding technology, which are used in robot and manual welding guns, must be reworked depending on the wear on the caps in order to ensure the reproducibility, reliability and strength of the welding points.
Dafür werden bekannterweise Fräswerkzeuge eingesetzt, die als Universalschneidplatten ausgeführt sind und die nur gerade Schrägen an den Elektrodenkappen nachschneiden. Damit wird die in vielen Fällen vorhandene gerundete Ausgangsform der Elektrodenkappe nur unzureichend nachgeformt, so daß die Qualität der Schweißpunkte leidet und ein höherer Verschleiß der Elektroden auftreten kann. Insbesondere an Schweißrobotern mit hoher Schweißfolge und der gleichzeitigen Forderung nach guter Reproduzierbarkeit der Schweißverbindung, wie sie im Fahrzeugbau gestellt wird, ist ein Nachfräsen der Urform der Elektroden von großer Bedeutung.For this purpose, milling tools are used that are designed as universal cutting plates and that only re-cut straight bevels on the electrode caps. This means that the rounded initial shape of the electrode cap, which is often present, is only insufficiently reshaped, so that the quality of the welding points suffers and greater wear on the electrodes can occur. Re-milling the original shape of the electrodes is particularly important for welding robots with a high welding sequence and the simultaneous requirement for good reproducibility of the weld joint, as is the case in vehicle construction.
Aufgabe der Erfindung ist es, eine einfache Vorrichtung zu entwickeln, die ein weitgehendes Nachfräsen der Urform der Elektroden an der Kappe auf wirtschaftliche Weise erlaubt.The object of the invention is to develop a simple device that allows extensive re-milling of the original shape of the electrodes on the cap in an economical manner.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die Vorrichtung aus einer Fräseraufnahme und einer Schneidplatte besteht, die in einer Aussparung der Fräseraufnahme fixiert ist, wobei die Schneidplatte mindestens eine Radiusschneide aufweist und die Schneidkante der Schneidplatte außermittig in der Fräseraufnahme angeordnet ist.According to the invention, the object is achieved in that the device consists of a milling cutter holder and a cutting plate which is fixed in a recess of the milling cutter holder, wherein the cutting plate has at least one radius cutting edge and the cutting edge of the cutting plate is arranged off-center in the milling cutter holder.
I ft ·I ft ·
-2--2-
Die mit Radiusschneide versehene Schneidplatte ermöglicht ein genaues Nachschneiden der Urform der Elektrodenkappen, kann aber auch zur Ausbildung einer neuen Kappengeometrie verwendet werden.The cutting plate with a radius cutting edge enables precise recutting of the original shape of the electrode caps, but can also be used to create a new cap geometry.
Die außermittige Anordnung der Schneidkante fuhrt zu einer sauberen Kappenoberfläche ohne Restspan im zentralen Bereich. In der Praxis sind Abweichungen von einigen Zehntelmillimetern für diese Wirkung ausreichend, um so eine sofort wieder einsetzbare Elektrode zu erhalten.The off-center arrangement of the cutting edge results in a clean cap surface without residual chips in the central area. In practice, deviations of a few tenths of a millimeter are sufficient for this effect in order to obtain an electrode that can be used again immediately.
In einer Vorzugsvariante weist die Schneidplatte zwei Schneidbereiche auf, die eine der Form der Elektroden angepaßte Geometrie besitzen. Damit ist das gleichzeitige Fräsen von zwei symmetrisch zugeführten Elektroden möglich. Eine weitere Ausführungsform sieht vor, die Schneidbereiche unterschiedlich, insbesondere mit verschiedenen Radien, auszubilden, um auch zwei Elektroden unterschiedlicher Geometrie gleichzeitig bearbeiten zu können. Eine weitere Ausgestaltung der Vorrichtung besteht darin, daß sie zusätzlich eine Nut zur Ableitung der Frässpäne besitzt.In a preferred variant, the cutting plate has two cutting areas that have a geometry adapted to the shape of the electrodes. This makes it possible to mill two symmetrically fed electrodes at the same time. Another embodiment provides for the cutting areas to be designed differently, in particular with different radii, in order to be able to machine two electrodes with different geometries at the same time. Another design of the device is that it also has a groove for the removal of the milling chips.
Vorteilhafterweise besteht die Schneidplatte aus einem Hartmetall oder aus einem mit Titancarbid beschichtetem Hochleistungs-Schnellarbeitsstahl.The cutting plate is advantageously made of a hard metal or a high-performance high-speed steel coated with titanium carbide.
Aufbau und Wirkungsweise der erfindungsgemäßen Vorrichtung werden im folgenden
anhand von Zeichnungen beispielhaft für den Einsatz zum Fräsen von Elektroden für die
Widerstandsschweißtechnik beschrieben.
Es zeigen:The structure and mode of operation of the device according to the invention are described below with reference to drawings as an example for use in milling electrodes for resistance welding technology.
Show it:
Figur 1 einen Längsschnitt durch die Vorrichtung mit in Fräsposition gebrachter Elektrode
Figur 2 eine Draufsicht auf die Vorrichtung
Figur 3 eine Schneidplatte zum gleichzeitigen Fräsen von zwei Elektroden gleicherFigure 1 shows a longitudinal section through the device with the electrode in the milling position Figure 2 shows a top view of the device
Figure 3 a cutting plate for simultaneous milling of two electrodes of the same
Geometrie
Figur 4 eine Schneidplatte zum gleichzeitigen Fräsen von zwei Elektroden unterschiedlicher
Geometriegeometry
Figure 4 a cutting plate for simultaneous milling of two electrodes of different geometry
Die in bekannter Weise elektrisch oder pneumatisch angetriebene Vorrichtung gemäß der Figuren 1 und 2 besteht aus einer käfigartigen Fräseraufnahme 1 und der Schneidplatte 2 aus Hartmetall von 4mm Dicke, die mit einer in der Gewindebohrung 3 eingebrachten Schraube in der Aussparung der Fräseraufnahme fixiert ist.The device according to Figures 1 and 2, which is driven electrically or pneumatically in a known manner, consists of a cage-like milling cutter holder 1 and the cutting plate 2 made of hard metal with a thickness of 4 mm, which is fixed in the recess of the milling cutter holder with a screw inserted in the threaded hole 3.
Die Schneidplatte weist eine Schneide auf, die mit einem Radius R versehen ist. Die Schneidkante 4 ist gegenüber dem Zentrum der Fräseraufnahme 1 um den Abstand &khgr; außermittig angeordnet, um eine saubere Kappenoberfläche ohne Restspan zu erhalten. Dadurch wird ein nachträgliches Entgraten vermieden.The cutting plate has a cutting edge that is provided with a radius R. The cutting edge 4 is arranged off-center by the distance x from the center of the milling cutter holder 1 in order to obtain a clean cap surface without residual chips. This avoids subsequent deburring.
Die Elektrode 5 (in Figur 2 aus Gründen der Übersicht nicht dargestellt) wird zum Nachfräsen in die Fräseraufnahme eingefahren und fixiert. Die Fräsdauer beträgt nur wenige Sekunden. Figur 1 zeigt die Elektrode nach Beendigung des Fräsvorganges.The electrode 5 (not shown in Figure 2 for reasons of clarity) is inserted into the cutter holder and fixed for re-milling. The milling time is only a few seconds. Figure 1 shows the electrode after the milling process has been completed.
Die Schneidplatte 2 nach Figur 3 ist geeignet, zwei Elektroden gleicher Geometrie gleichzeitig zu fräsen. Für diesen Einsatzfall besitzt sie zwei Schneidbereiche 6, die spiegelbildlich gestaltet sind.The cutting plate 2 according to Figure 3 is suitable for milling two electrodes of the same geometry simultaneously. For this application, it has two cutting areas 6 that are mirror-imaged.
In Figur 4 ist eine Schneidplatte dargestellt, die zum Fräsen von zwei Elektroden mit voneinander abweichender Kappengeometrie unterschiedlich ausgebildete Schneidbereiche 6a und 6b aufweist, wobei der Schneidbereich 6b zum Nachfräsen von abgesetzten Kappen dient.Figure 4 shows a cutting plate which has differently designed cutting areas 6a and 6b for milling two electrodes with differing cap geometries, whereby the cutting area 6b is used for re-milling offset caps.
Die Vorichtung gestattet ein wirtschaftliches und formgetreues Nacharbeiten der Urform von Werkstücken mit Rotationsflächen mit nur einer Schneide und eignet sich insbesondere als Zusatzeinrichtung an Schweißanlagen mit Roboterzangen. Mit der Vorrichtung kann der gesamte Bereich der in der Widerstandsschweißtechnik angewandten Elektrodengrößen und Kappenformen nachgeschnitten bzw. umgeschnitten werden.The device allows economical and accurate reworking of the original shape of workpieces with rotating surfaces with only one cutting edge and is particularly suitable as an additional device on welding systems with robot guns. The device can be used to recut or recut the entire range of electrode sizes and cap shapes used in resistance welding technology.
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29903526U DE29903526U1 (en) | 1999-02-27 | 1999-02-27 | Device for milling workpieces with rotating surfaces |
| DE19951136A DE19951136B4 (en) | 1999-02-27 | 1999-10-23 | Device for pairwise milling of electrode caps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29903526U DE29903526U1 (en) | 1999-02-27 | 1999-02-27 | Device for milling workpieces with rotating surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29903526U1 true DE29903526U1 (en) | 1999-05-27 |
Family
ID=8070039
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29903526U Expired - Lifetime DE29903526U1 (en) | 1999-02-27 | 1999-02-27 | Device for milling workpieces with rotating surfaces |
| DE19951136A Expired - Fee Related DE19951136B4 (en) | 1999-02-27 | 1999-10-23 | Device for pairwise milling of electrode caps |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19951136A Expired - Fee Related DE19951136B4 (en) | 1999-02-27 | 1999-10-23 | Device for pairwise milling of electrode caps |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE29903526U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10125481C1 (en) * | 2001-05-25 | 2002-08-22 | Andreas Braeuer | Molding head, for forming resistance welding electrode caps, is electrically driven and contains symmetrically spaced, undriven rollers, one of which is offset from center of head |
| DE10026384B4 (en) * | 2000-05-27 | 2008-11-06 | Volkswagen Ag | Milling head for machining cap-shaped workpiece parts |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE527624C2 (en) * | 2004-04-22 | 2006-04-25 | Sandvik Intellectual Property | Milling and cutting for sharpening electrodes |
| DE102011002663A1 (en) * | 2011-01-13 | 2012-07-19 | Lutz Technik Gmbh | Milling tool for machining electrode tip of spot welding electrodes, comprises a tool body in milling operation rotatable around a rotational axis with first and second axial sides, where a cutting element is locked at the tool body |
| DE102012008257A1 (en) * | 2012-04-25 | 2013-10-31 | Peter Lutz | Milling head for removal of deposits on welding electrodes for resistance welding, has cutting plate arranged centrally in bore, in which ends of carcass are clamped, and cutting edge abuts against central axis of bore |
| DE102013001765B4 (en) | 2013-01-31 | 2014-09-04 | Volkswagen Aktiengesellschaft | Electrode Milling Tools, Electrode Milling Apparatus and Method for Post-Welding Worn Spot Welding Electrodes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642514C1 (en) * | 1986-12-12 | 1988-06-09 | Fette Wilhelm Gmbh | One-edged spherical copy milling cutter and turnover plate for a spherical copy milling cutter |
| JPH0621605Y2 (en) * | 1987-02-03 | 1994-06-08 | 三菱マテリアル株式会社 | Throw-away drilling tool |
| US5332342A (en) * | 1991-04-26 | 1994-07-26 | Honda Giken Kogyo Kabushiki Kaisha | Electrode tip dresser and cutter for electrode tip dresser |
| DE29714320U1 (en) * | 1997-08-11 | 1997-10-16 | Lutz, Peter-Stephan, Sväty Jur | Cutting tool for processing the welding area of spot welding electrodes |
-
1999
- 1999-02-27 DE DE29903526U patent/DE29903526U1/en not_active Expired - Lifetime
- 1999-10-23 DE DE19951136A patent/DE19951136B4/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10026384B4 (en) * | 2000-05-27 | 2008-11-06 | Volkswagen Ag | Milling head for machining cap-shaped workpiece parts |
| DE10125481C1 (en) * | 2001-05-25 | 2002-08-22 | Andreas Braeuer | Molding head, for forming resistance welding electrode caps, is electrically driven and contains symmetrically spaced, undriven rollers, one of which is offset from center of head |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19951136B4 (en) | 2005-07-07 |
| DE19951136A1 (en) | 2000-09-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19990708 |
|
| R081 | Change of applicant/patentee |
Owner name: BRAEUER, ANDREAS, DIPL.-ING., DE Free format text: FORMER OWNER: SCHWEISSTECHNIK BRAEUER GMBH, 09488 SCHOENFELD, DE Effective date: 19991213 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20020710 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20050202 |
|
| R158 | Lapse of ip right after 8 years |
Effective date: 20070901 |