EP0772509B1 - Verfahren und vorrichtung zum schleifen von nocken mit konkaven flanken - Google Patents
Verfahren und vorrichtung zum schleifen von nocken mit konkaven flanken Download PDFInfo
- Publication number
- EP0772509B1 EP0772509B1 EP95924942A EP95924942A EP0772509B1 EP 0772509 B1 EP0772509 B1 EP 0772509B1 EP 95924942 A EP95924942 A EP 95924942A EP 95924942 A EP95924942 A EP 95924942A EP 0772509 B1 EP0772509 B1 EP 0772509B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- grinding disc
- cam
- grinding wheel
- ground
- 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
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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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
- B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
Definitions
- the invention relates to a method and an apparatus for grinding of concave flanks of a camshaft.
- the invention is based on the object, a method and a Develop device of the type known as known so that an optimal grinding process with regard to grinding wheel load and Cooling is possible, and that with a modified intermediate contour As uniform an allowance as possible for finishing the hollow flank or the outer surface of the cam can be produced.
- the manufacture the modified intermediate contour serving grinding wheel on the grinding surface is narrower than the cam width, with an intermediate contour in the longitudinal feed of this grinding wheel with a radially stationary cam is ground.
- the modified intermediate contour is thus produced in the smallest possible grinding zone between the grinding wheel and the cam, so that optimal cooling is achieved.
- the grinding wheel which is used to grind out the modified intermediate contour serves in the concave area of the cam's run-up and run-off zone, offers even more advantages.
- the grinding wheel diameter is approximately twice the radius of the corresponds to the concave flank of the cam, is the size of the grinding allowance almost to finish grinding the cam in the concave flank constant if the radius of the flank to be ground on the cam in is essentially constant. Since in the known method according to DE 41 37 924 C1 the grinding wheel for grinding out the modified intermediate contour much larger than the double radius of the cohesive Flank of the cam can be selected, can be modified when grinding the modified Intermediate contour never an even allowance for finish grinding can be achieved. This leads to finish grinding on the grinding wheel inevitably lead to an increase in grinding wheel wear as well an increase in the grinding time when finishing the outer cam contour with the small grinding wheel.
- the particularly good cooling in the method according to the invention allows high cutting performance and thus a short machining time, due to low heat input into the grinding zone of the workpiece, so that undesirable structural changes, grinding cracks and thus a loss of hardness in the surface area of the cam are excluded.
- the one used to produce the modified intermediate contour Grinding wheel can be optimal for this purpose in terms of grinding wheel dimensions and specification can be interpreted and Finishing grinding also serves a grinding wheel with an optimal specification and with optimal grinding wheel dimensions.
- grinding wheel wear can be reduced to a minimum become.
- the non-productive times for grinding wheel dressing are also minimized because the dressing intervals become longer. By the enlarged Dressing intervals reduce the grinding wheel consumption, and thus decrease the tool costs.
- the cam Before creating the modified intermediate contour, the cam through a grinding wheel with a relatively large diameter over its pre-ground the entire circumference.
- the clearance angle creates during grinding the modified intermediate contour, in which relatively much material in the Compared to finishing the concave flanks, between the finished ground contour of the modified intermediate contour and the grinding wheel has a substantially linear contact between the outer surface of the abrasive coating and the end face the engaged zone.
- the clearance angle can be produced in this way be that the grinding wheel is pivoted horizontally, or that the Grinding wheel on its surface line to the value of the small clearance angle is trained. This will provide the desired improvement in Cooling promoted further.
- the device-like solution to the problem is mentioned in claim 2.
- the arrangement of the grinding spindles on the headstock has the advantage that both spindles are on the same guide (X-axis) are built up. Due to this arrangement, not two linear guides Very high stiffness values can be placed on top of each other on the grinding slide. Because of the high rigidity of the Grinding headstock and the guide system have a positive impact on accuracy of the workpiece to be produced can be optimal Dimensional and shape accuracy achieved on the ground cam become. These high stiffness values of the guidance system increase the Process reliability of the process and thus also have a reduced one Grinding wheel wear.
- Cams 1 are arranged at intervals on a camshaft 2.
- the Cams have to be ground very precisely to their finished contour, what is particularly difficult if - as in the present case - the Cams are provided with concave flanks.
- 1 to 5 show that three grinding wheels are used is, namely with a grinding wheel for pre-grinding, with a Grinding wheel for producing the modified intermediate contour and with a grinding wheel for finish grinding.
- the first method step is shown in FIG. 1.
- the first grinding wheel 7 With a first grinding wheel 7, the cams 1 from their raw contour 3 to an intermediate contour 4 sanded.
- the first grinding wheel 7 has a relative large diameter, for example about 400 mm, and because of that it is not coherent flat curvature of the grinding wheel possible to grind out the concave flanks.
- the process step for grinding out the concave flanks on the modified intermediate contour is shown in FIGS. 2 and 2A.
- the Production of the modified, that is, corresponding to the concavity of the flanks Intermediate contour 6 takes place through a third grinding wheel 8.
- This grinding wheel 8 is particularly in relation to its grinding surface much narrower than the width of the cam 1 to be ground; at the In the exemplary embodiment, the third grinding wheel 8 has a grinding pad width of, for example, 4 mm, the cam width for car camshafts is usually about 10 to 20 mm. Grinding the modified intermediate contour 6 with the third grinding wheel 8 performed such that the contour when the cam 1 is radially stationary ground in the longitudinal feed indicated by arrow A. becomes. So there is no plunge grinding to grind the modified intermediate contour instead.
- the grinding direction for grinding out the modified intermediate contour with the grinding wheel 8 can by the CNC control on the machine be selected.
- the third grinding wheel 8 has a diameter which is about twice the concave radius of the concave flanks of cam 1 corresponds.
- the modified intermediate contour 6 can be ground out with arrangement of a clearance angle, whereby a substantially linear Contact between the surface line of the grinding wheel and the Workpiece is reached.
- the second grinding wheel 9 mounted, the diameter smaller and smaller than the grinding wheel 8.
- This second grinding wheel 9 Cam from the modified intermediate contour 6 to the finished contour 5 ground, as shown in Fig. 3. With the little one Diameter of the second grinding wheel 9 can be used with it without difficulty the complete cam outer contour with the concave flanks of the Grind cam to finished size.
- 4 and 5 is the entire grinding device shown with the three grinding wheels.
- the camshaft 2 is between a workpiece headstock 14 and a tailstock 15 clamped and on the bearings of the camshaft supported by steadies 16.
- the grinding spindles 12 and 13 with a Headstock 10 pivotable, as indicated by the arrow line B. is.
- the pivoting takes place through an angle of, for example, 60 °, the grinding spindle arrangement also having other angles, e.g. Allow 180 ° can.
- Fig. 5 shows the device after pivoting the headstock 10. Now the grinding wheels 8 and 9 are in the grinding position while the first grinding wheel 7 is pivoted away.
- the grinding slide Under the headstock 10 is the grinding slide with a Leadership and in extension of the leadership a numerically controlled Drive for generating the cam stroke in the direction of the X axis in Dependence on the rotary movement (C axis).
- the longitudinal feed of the Camshaft is via the Z axis.
- the axes of the grinding machine are CNC controlled.
Description
- Fig. 1
- den ersten Verfahrensschritt,
- Fig. 2
- den zweiten Verfahrensschritt zum Herstellen der modifi zierten Zwischenkontur,
- Fig. 2A
- die in Fig. 2 dargestellte Einrichtung in der Draufsicht,
- Fig. 3
- den dritten Verfahrensschritt zum Herstellen der Fertigkontur,
- Fig. 4
- die Draufsicht auf die Vorrichtung bei Verwendung von drei Schleifscheiben,
- Fig. 5
- die in Fig. 4 dargestellte Vorrichtung nach Schwenken des Spindelstockes.
Claims (4)
- Verfahren zum Schleifen von konkave Flanken aufweisenden Nocken einer Nockenwelle unter Verwendung einer ersten (7) und einer zweiten Schleifscheibe (9) zum Vor- und Fertigschleifen des Nockens, wobei mit dem Vorschliff an dem Nocken eine Zwischenkontur angeschliffen wird,
gekennzeichnet durch
die Verwendung einer dritten Schleifscheibe (8), deren Durchmesser, der kleiner als der Durchmesser der ersten Schleifscheibe (7) und größer als der Durchmesser der zweiten Schleifscheibe (9) ist, etwa dem doppelten Radius der konkaven Flanken entspricht und die schmaler ist als die Nockenbreite, wobei mit dieser Schleifscheibe (8) die konkaven Flanken bei stillstehendem Nocken (1) im Längsvorschub auf eine modifizierte Zwischenkontur (6) vorgeschliffen werden. - Maschine zum Durchführen des Verfahrens nach Anspruch 1, mit einem auf dem Bett der Maschine radial zu der zu schleifenden Nockenwelle verfahrbaren Schlitten, auf dem zwei Schleifspindeln (12, 13) mit einer Vor- und einer Fertigschleifscheibe (7, 9) gelagert sind, dadurch gekennzeichnet, daß die beiden Schleifspindeln (12, 13) in einem gemeinsamen Spindelstock (10) derart gelagert sind, daß die Spindelachsen sich unter einem Winkel schneiden oder parallel zueinander verlaufen, daß der Spindelstock (10) um eine quer zur Nockenwelle (2) verlaufende Achse (11) schwenkbar ist und daß eine dritte Schleifscheibe (8), deren Durchmesser kleiner ist als der Durchmesser der ersten Schleifscheibe (7) und größer ist als der Durchmesser der zweiten Schleifscheibe (9) und etwa dem doppelten Radius der konkaven Flanken der an der Nockenwelle (2) zu schleifenden Nocken (1) entspricht und deren Breite kleiner als die Breite des zu schleifenden Nockens (1) ist, neben der Fertigschleifscheibe (9) auf deren Schleifspindel (13) angeordnet ist.
- Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die Arbeitsfläche der dritten Schleifscheibe (8) konisch ausgebildet ist.
- Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die Achse der die dritte Schleifscheibe (8) tragenden Schleifspindel (13) beim Einsatz dieser Schleifscheibe (8) unter einem von 0° verschiedenen Winkel zur Achse der Nockenwelle (2) angeordnet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4426452A DE4426452C1 (de) | 1994-07-26 | 1994-07-26 | Verfahren und Maschine zum Schleifen von Nocken mit konkaven Flanken |
DE4426452 | 1994-07-26 | ||
PCT/EP1995/002490 WO1996003257A1 (de) | 1994-07-26 | 1995-06-26 | Verfahren und vorrichtung zum schleifen von nocken mit konkaven flanken |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0772509A1 EP0772509A1 (de) | 1997-05-14 |
EP0772509B1 true EP0772509B1 (de) | 1999-11-17 |
Family
ID=6524179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95924942A Expired - Lifetime EP0772509B1 (de) | 1994-07-26 | 1995-06-26 | Verfahren und vorrichtung zum schleifen von nocken mit konkaven flanken |
Country Status (13)
Country | Link |
---|---|
US (1) | US5899797A (de) |
EP (1) | EP0772509B1 (de) |
JP (1) | JPH10502878A (de) |
KR (1) | KR100373116B1 (de) |
CN (1) | CN1077001C (de) |
BR (1) | BR9508336A (de) |
CA (1) | CA2192988A1 (de) |
DE (2) | DE4426452C1 (de) |
ES (1) | ES2139910T3 (de) |
GE (1) | GEP20002083B (de) |
RU (1) | RU2138384C1 (de) |
UA (1) | UA39978C2 (de) |
WO (1) | WO1996003257A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19620813C2 (de) * | 1996-05-23 | 2000-07-20 | Junker Erwin Maschf Gmbh | Verfahren und Vorrichtung zum Unrundschleifen von Nockenformen mit konkaven Flanken |
GB9612734D0 (en) * | 1996-06-18 | 1996-08-21 | Western Atlas Uk Ltd | Improvements in and relating to grinding machines |
GB2346574B (en) * | 1999-02-03 | 2001-09-19 | Unova Uk Ltd | Angle head grinding method and apparatus |
WO2001030534A2 (en) * | 1999-10-27 | 2001-05-03 | Unova U.K. Limited | Constant spindle power grinding method |
US20030186631A1 (en) * | 2002-03-29 | 2003-10-02 | Toyoda Koki Kabushiki Kaisha | Cylindrical grinder, and mechanism for producing relative movement between grinding wheel and workpiece in cylindrical grinder |
DE10234707B4 (de) * | 2002-07-30 | 2007-08-02 | Erwin Junker Maschinenfabrik Gmbh | Verfahren und Vorrichtung zum Schleifen eines rotationssymmetrischen Maschinenbauteils |
DE10333916B4 (de) * | 2003-07-25 | 2010-10-14 | Audi Ag | Verfahren zum Schleifen der Nocken von Brennkraftmaschinen-Nockenwellen |
EP2163341B1 (de) * | 2008-09-12 | 2019-07-10 | Jtekt Corporation | Maschinenwerkzeug mit Ablagevorrichtung und Bearbeitungsverfahren dafür |
DE502008001096D1 (de) * | 2008-11-05 | 2010-09-16 | Supfina Grieshaber Gmbh & Co | Finishmaschine mit einer Steinwendeeinheit |
JP5428740B2 (ja) * | 2009-10-19 | 2014-02-26 | 株式会社ジェイテクト | 複合研削盤 |
DE202009014739U1 (de) * | 2009-10-20 | 2011-03-10 | Schaudt Mikrosa Gmbh | Schleifmaschine mit zwei Spindelsätzen |
CN101725691A (zh) * | 2009-12-23 | 2010-06-09 | 奇瑞汽车股份有限公司 | 一种凸轮加工方法 |
CN102452030B (zh) * | 2010-10-27 | 2016-07-06 | 株式会社捷太格特 | 磨削方法、磨削系统以及多功能磨削机床 |
DE102011102113A1 (de) * | 2011-05-20 | 2012-11-22 | Schaudt Mikrosa Gmbh | Mehrscheiben-Schleifmaschine mit zumindest zwei Spindelsätzen |
CN102240950B (zh) * | 2011-05-31 | 2013-11-20 | 广州市敏嘉制造技术有限公司 | 基于变径砂轮磨削的弧面凸轮磨削中心 |
CN103586755A (zh) * | 2013-04-05 | 2014-02-19 | 鹤壁汽车工程职业学院 | 级进柔性磨光机 |
DE102014018784A1 (de) * | 2014-12-19 | 2016-06-23 | Thyssenkrupp Presta Teccenter Ag | Verfahren zur Erzeugung eines Nockenprofils eines Nockenpaketes einer Nockenwelle und Nockenwelle |
DE102015211115B4 (de) * | 2015-06-17 | 2022-11-03 | Erwin Junker Maschinenfabrik Gmbh | Verfahren und Schleifmaschine zum Schleifen von Außen- und Innenkonturen von Werkstücken in einer Aufspannung |
CN104972278A (zh) * | 2015-06-29 | 2015-10-14 | 安庆市吉安汽车零件锻轧有限公司 | 一种高精度凸轮轴加工方法 |
CN105150123A (zh) * | 2015-09-25 | 2015-12-16 | 泰州市宏祥动力机械有限公司 | 用于凸轮去毛刺的砂轮 |
JP6658178B2 (ja) * | 2016-03-23 | 2020-03-04 | 株式会社ジェイテクト | カム研削装置、およびカム研削方法 |
US10654144B2 (en) * | 2018-01-17 | 2020-05-19 | Dave Phelps | Spindle reconditioning system |
CN114536206A (zh) * | 2022-03-03 | 2022-05-27 | 先导薄膜材料(广东)有限公司 | 一种旋转靶材表面研磨方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1843301A (en) * | 1929-09-28 | 1932-02-02 | Norton Co | Cam lapping machine |
DE678981C (de) * | 1936-10-28 | 1939-07-26 | Friedrich Deckel Praez S Mecha | Verfahren zum Schleifen von Nockenwellen |
US2209538A (en) * | 1937-07-30 | 1940-07-30 | Porsche Kg | Means and method for producing cams |
US4197679A (en) * | 1977-04-15 | 1980-04-15 | Ito & Okamoto, Esq. | Method for controlling the rotational speed of a rotary body |
DE3435313C2 (de) * | 1984-03-15 | 1986-10-02 | Erwin 7611 Nordrach Junker | Vorrichtung zum Außenrundschleifen |
DE3724698A1 (de) * | 1987-07-25 | 1989-02-02 | Schaudt Maschinenbau Gmbh | Schleifkopf |
JPH02218547A (ja) * | 1989-02-20 | 1990-08-31 | Nippei Toyama Corp | カム研削盤 |
HU209638B (en) * | 1989-10-27 | 1994-09-28 | Miskolci Egyetem | Method and apparatus for generating machining with abrasive belt |
DE4137924C2 (de) * | 1991-11-18 | 1997-12-04 | Schaudt Maschinenbau Gmbh | Verfahren und Vorrichtung zum numerisch gesteuerten Schleifen von Nocken einer Nockenwelle |
JP2930462B2 (ja) * | 1991-12-26 | 1999-08-03 | 豊田工機株式会社 | 研削方法 |
US5655952A (en) * | 1992-07-31 | 1997-08-12 | Ernst Thielenhaus Kg | System for honing camshaft cams |
DE19516711A1 (de) * | 1995-05-06 | 1996-11-07 | Schaudt Maschinenbau Gmbh | Werkzeugmaschine mit zwei Arbeitsspindeln |
-
1994
- 1994-07-26 DE DE4426452A patent/DE4426452C1/de not_active Expired - Lifetime
-
1995
- 1995-06-26 KR KR1019970700155A patent/KR100373116B1/ko not_active IP Right Cessation
- 1995-06-26 RU RU97102728A patent/RU2138384C1/ru not_active IP Right Cessation
- 1995-06-26 US US08/776,624 patent/US5899797A/en not_active Expired - Lifetime
- 1995-06-26 DE DE59507256T patent/DE59507256D1/de not_active Expired - Lifetime
- 1995-06-26 JP JP8505389A patent/JPH10502878A/ja active Pending
- 1995-06-26 ES ES95924942T patent/ES2139910T3/es not_active Expired - Lifetime
- 1995-06-26 GE GEAP19953547A patent/GEP20002083B/en unknown
- 1995-06-26 CN CN95194313A patent/CN1077001C/zh not_active Expired - Fee Related
- 1995-06-26 CA CA002192988A patent/CA2192988A1/en not_active Abandoned
- 1995-06-26 WO PCT/EP1995/002490 patent/WO1996003257A1/de active IP Right Grant
- 1995-06-26 EP EP95924942A patent/EP0772509B1/de not_active Expired - Lifetime
- 1995-06-26 UA UA97020483A patent/UA39978C2/uk unknown
- 1995-06-26 BR BR9508336A patent/BR9508336A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1077001C (zh) | 2002-01-02 |
DE59507256D1 (de) | 1999-12-23 |
CN1154672A (zh) | 1997-07-16 |
BR9508336A (pt) | 1997-12-23 |
JPH10502878A (ja) | 1998-03-17 |
WO1996003257A1 (de) | 1996-02-08 |
UA39978C2 (uk) | 2001-07-16 |
GEP20002083B (en) | 2000-05-10 |
DE4426452C1 (de) | 1995-09-07 |
EP0772509A1 (de) | 1997-05-14 |
ES2139910T3 (es) | 2000-02-16 |
CA2192988A1 (en) | 1996-02-08 |
US5899797A (en) | 1999-05-04 |
RU2138384C1 (ru) | 1999-09-27 |
KR100373116B1 (ko) | 2003-05-12 |
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