EP1123757A2 - Druckgasabschreckung von wellenförmigen Werkstücken - Google Patents
Druckgasabschreckung von wellenförmigen Werkstücken Download PDFInfo
- Publication number
- EP1123757A2 EP1123757A2 EP01100775A EP01100775A EP1123757A2 EP 1123757 A2 EP1123757 A2 EP 1123757A2 EP 01100775 A EP01100775 A EP 01100775A EP 01100775 A EP01100775 A EP 01100775A EP 1123757 A2 EP1123757 A2 EP 1123757A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- straightening
- rollers
- machine according
- cold gas
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/16—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts of specific articles made from metal rods, tubes, or profiles, e.g. crankshafts, by specially adapted methods or means
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
Definitions
- the invention relates to a machine for straightening and hardening wavy, in particular elongated workpiece to a predetermined Standard dimension, with a holding device for the tool, several rotatable, the workpiece when straightening at predetermined straightening points Lower rollers as well as several rotating ones arranged at the straightening points Top rollers, each of which is coupled to an infeed drive, and one Rotary drive for the workpiece and a workpiece quenching device.
- the invention is therefore based on the object in the aforementioned Machine to simplify the hardening of the workpieces.
- a chamber is provided according to the invention for this purpose, which surrounds the receiving device as well as the guide rollers and top rollers and cold gas nozzles supplying the workpiece and an exhaust gas outlet which has a gas treatment device with the cold gas nozzles connected is.
- This eliminates all problems with oil as a quenching medium related.
- the machine becomes structurally simpler because of the oil bath and the drum with its drive are unnecessary.
- Quenching the workpiece essentially at the same time possibly with a small if necessary, also perform a controllable time offset to the straightening.
- the offset suitably depends on the point in time at which the Delivery of the top rollers to the workpiece is complete. He is not with it more dependent on other design conditions of the machine, for example the drum drive of previous immersion bath machines.
- a preferred embodiment of the invention are clamped along the Workpiece arranged several rows of cold gas nozzles. With that the Heat removal speed increased. For example, if the rows are evenly distributed around the circumference of the workpiece Improved warpage of the quenched workpiece. A constructive compact construction of the machine and quick quenching are achieved, if in a preferred embodiment at each straightening point between the top roller and one of the assigned lower roles and between the two lower roles at least one cold gas nozzle each and further cold gas nozzles along the workpiece are arranged.
- the machine 1 for straightening and hardening has a bed 2 and an upper lifting or swiveling cross member 3.
- Figure 1 are also Detection points 4, 5, 6, 7, 8, or 9 ( Figure 3), at which the between an upper roller 10 and two lower rollers 20, 30 held workpiece 50 directed shall be.
- the top roller 10 is in one at each of its two ends on the strinside side from the cross beam 3 descending arms 12, 14 rotatably supported, each of the two arms 12, 14 with one housed in the cross member 3 does not shown feed drive is coupled, which also under the control of machine control, not shown, raising or lowering the arms 12, 14 can cause according to double arrow 16.
- the rear lower roller 20 is on the end face in a bed-fixed stand 22, 24 rotatably supported, either in each of the stands 22, 24 or in bed 2 Rotary drive, not shown, for the lower roller 20 is present.
- the Rotary drive can with the lower roller 20 via a chain drive on both sides be coupled.
- the front lower roller 30 is structurally the same as the rear lower roller 20 is located at the same height above the bed 2 as the rear lower roller 20 however, when looking at Figure 3 in front of the workpiece 50, while the rear Bottom roller 20 is arranged behind the workpiece 50.
- the axis 15 of the Upper roller 10, the axis 25 of the rear lower roller 20 and the axis 35 of the front lower roller 30 extend parallel to the axis of the workpiece 50, the here is a camshaft, for example.
- the axes 25 and 35 are in the horizontal and the axis 15 lie on the perpendicular to the imaginary Connection line between axes 25 and 35.
- top roller 10 On the top roller 10 are predetermined by the shape of the workpiece Straightening points radially expanded "top rollers" 16, 17, 18, 19 formed after Delivery of the upper roller 10 to the workpiece 50 the latter at the straightening points Contact for straightening. It is within the scope of the invention if the Top rollers 16, 17, 18, 19 as in the shaft straightening and - mentioned above Model HR hardening machine separately on its own arm on the cross bar 3 attached and provided with their own feed drive.
- the rear and the front lower roller 20 and 30 to the Straightening points radially expanded "lower rollers" 26, 27, 28, 29 on which the Workpiece 50 rests at the straightening points or at which it is driven in rotation.
- the lower rollers can also be separate lower rollers like the one Act machine model HR, each of which has its own delivery drive having.
- the rotary drive of the workpiece 50 is carried out by taking on the rotationally driven lower rollers 20 and 30 deposited workpiece.
- Machine model HR is the workpiece between two front-end center points recorded and held, which are driven by rotation.
- the invention is both with one and with the other rotary drive for the workpiece 50 realizable.
- the machine 1 is on all sides of surround a chamber 60, the ceiling 62 with a cold gas inlet in the form of a Cold gas nozzle field 64 is provided.
- a cold gas inlet in the form of a Cold gas nozzle field 64 is provided.
- an exhaust gas outlet On the end walls, not shown Chamber 60 is arranged an exhaust gas outlet, through which exhaust gas from the Chamber 60 again via a gas processing device, not shown Cold gas nozzles of the field 64 is supplied.
- FIGS. 2 and 3 A second embodiment of the invention is shown in FIGS. 2 and 3.
- the upper roller 10 and the lower rollers 20 and 30 each have such a largest Diameter that between the upper roller 10 and the rear lower roller 20th on the one hand and between the top roller 10 and the front bottom roller 30 on the other hand and finally between the two lower rollers 20, 30 each Gap exists so that the gaps of three in Circumferentially equally spaced directions from each a cold gas flow on the Workpiece 50 can be steered.
- cooling tube 42 For this purpose there is a lower cooling tube 42 between the front and the rear Bottom roller 30, 20 placed parallel to workpiece 50 on end bearing 41 and with a row extending substantially parallel to workpiece 50 43 equipped with cold gas nozzles, each of which is directed towards the workpiece.
- a rear one on beams 45 that extend from the cross member 3 Cooling tube 44 attached and with a parallel to the workpiece 50 row 47 of Cold gas nozzles equipped, which are directed to the workpiece.
- a front cooling tube 46 is fastened from the beams 49 extending down from the transverse hom 3 and with a front row 48 of the workpiece 50 Cold gas nozzles equipped.
- the cross member 3 is in the horizontal lowered, in which the cooling tubes 44, 46 are already in their working position have taken, but the top roller 10 has not yet been delivered. Now will the feed drive for the top roller activated so that the top roller 10 their Delivery stroke executes.
- Switch arm A coupled with the vertical movement of the top roller, Switch arm, not shown, triggers one when a predetermined position is reached forwarded to the machine control electrical impulse, which then releases the outflow of cold gas through the rows of nozzles 43, 47, 48.
- This one Position can be set at your choice, is the beginning of the Workpiece quenching depending on the top roller infeed controllable.
- the cooling tubes 42, 44, 46 extend the full length of the Workpiece 50, so that not only the Richstelle but also those between them lying workpiece sections are cooled.
- the same measures can be taken meet the machine model HR, with the possibility then if necessary exists, at the workpiece sections between the individual straightening points short cooling tubes in the circumferential direction between the cooling tubes 42, 44, 46 to accelerate heat removal.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Wire Processing (AREA)
Abstract
Description
Claims (9)
- Maschine zum Richten und Härten von wellenförmigen, insbesondere langgestreckten Werkstücken auf ein vorgegebenes Richtmaß, mit einer Aufnahmevorrichtung für das Werkstück (50), mehreren drehbaren, das Werkstück beim Richten an vorgegebenen Richtstellen (4, 5, 6, 7, 8, 9) unterfassenden Unterrollen sowie mit mehreren drehbaren an den Richtstellen angeordneten Oberrollen, von denen jede mit einem Zustellantrieb gekoppelt ist, sowie mit einem Drehantrieb für das Werkstück und einer Werkstück-Abschreckeinrichtung, gekennzeichnet durch eine die Aufnahmevorrichtung sowie die Unterrollen und die Oberrollen umgebende Kammer (60) mit dem Werkstück Kaltgas zuführenden Kaltgasdüsen und einem Abgasauslaß, welcher über eine Gasaufbereitungseinrichtung mit den Kaltgasdüsen verbunden ist.
- Maschine nach Anspruch 1, dadurch gekennzeichnet, daß längs des eingespannten Werkstückes (50) mehrere Reihen (43, 47, 48) von Kaltgasdüsen angeordnet sind.
- Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die Reihen um den Umfang des Werkstückes gleich verteilt angeordnet sind.
- Maschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß sich die Reihen parallel zur Werkstückachse erstrecken.
- Maschine nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß an jeder Richtstelle zwischen der Oberrolle und den beiden zugeordneten Unterrollen wenigstens eine Kaltgasdüse sowie zwischen den Richtstellen weitere Kaltgasdüsen angeordnet sind.
- Maschine nach Anspruch 5, dadurch gekennzeichnet, daß an jeder Richtstelle zwischen der Oberrolle und je einer der zugeordneten Unterrollen sowie zwischen den beiden Unterrollen wenigstens je eine Kaltgasdüse angeordnet ist.
- Maschine nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Reihen an Kühlrohren (42, 44, 46) ausgebildet sind.
- Maschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Oberrollen Teil einer Oberwalze (10) und die Unterrollen Teil einer vorderen bezw. einer hinteren Unterwalze (20, 30) sind.
- Maschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Beginn der Abschreckung in Abhängigkeit vom Zustellhub der Oberrollen bezw. der Oberwalze (10) steuerbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10005969A DE10005969C1 (de) | 2000-02-09 | 2000-02-09 | Wellenricht- und -härtemaschine |
DE10005969 | 2000-02-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1123757A2 true EP1123757A2 (de) | 2001-08-16 |
EP1123757A3 EP1123757A3 (de) | 2002-01-16 |
EP1123757B1 EP1123757B1 (de) | 2005-04-13 |
Family
ID=7630502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01100775A Expired - Lifetime EP1123757B1 (de) | 2000-02-09 | 2001-01-13 | Druckgasabschreckung von wellenförmigen Werkstücken |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1123757B1 (de) |
CZ (1) | CZ297750B6 (de) |
DE (2) | DE10005969C1 (de) |
ES (1) | ES2239070T3 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10306865B3 (de) * | 2003-02-19 | 2004-08-12 | Daimlerchrysler Ag | Verfahren zum Herstellen einer gehärteten Welle |
DE10314040B3 (de) * | 2003-03-28 | 2005-01-13 | Heess Gmbh & Co Kg | Verfahren und Vorrichtung zum Härten ringförmiger Werkstücke |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1245799A (en) * | 1967-11-27 | 1971-09-08 | Ilse Wewer | Shaft tempering and straightening machine and a method of straightening workpieces |
FR2427858A1 (fr) * | 1978-06-05 | 1980-01-04 | Escofier Expl Ets | Machine a redresser par actions rotatives |
JPH11350029A (ja) * | 1998-06-09 | 1999-12-21 | Honda Motor Co Ltd | 金型鋳造品の熱処理方法 |
-
2000
- 2000-02-09 DE DE10005969A patent/DE10005969C1/de not_active Expired - Fee Related
-
2001
- 2001-01-13 ES ES01100775T patent/ES2239070T3/es not_active Expired - Lifetime
- 2001-01-13 DE DE50105871T patent/DE50105871D1/de not_active Expired - Fee Related
- 2001-01-13 EP EP01100775A patent/EP1123757B1/de not_active Expired - Lifetime
- 2001-02-06 CZ CZ20010467A patent/CZ297750B6/cs not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1245799A (en) * | 1967-11-27 | 1971-09-08 | Ilse Wewer | Shaft tempering and straightening machine and a method of straightening workpieces |
FR2427858A1 (fr) * | 1978-06-05 | 1980-01-04 | Escofier Expl Ets | Machine a redresser par actions rotatives |
JPH11350029A (ja) * | 1998-06-09 | 1999-12-21 | Honda Motor Co Ltd | 金型鋳造品の熱処理方法 |
Non-Patent Citations (2)
Title |
---|
GONDESEN B ET AL: "OPTIMIERUNG DER EINZELTEILABSCHRECKUNG IN DUESENFELD TEIL 1: EINFLUSS VON DUESENFELDPARAMETERN AUF ABKUEHLSGESCHWINDIGKEIT UND OBERFLAECHENHAERTE" HAERTEREI TECHNISCHE MITTEILUNGEN, CARL HANSER VERLAG. MUNCHEN, DE, Bd. 53, Nr. 2, M{rz 1998 (1998-03), Seiten 87-92, XP001039588 ISSN: 0341-101X * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03, 30. März 2000 (2000-03-30) & JP 11 350029 A (HONDA MOTOR CO LTD), 21. Dezember 1999 (1999-12-21) * |
Also Published As
Publication number | Publication date |
---|---|
EP1123757B1 (de) | 2005-04-13 |
EP1123757A3 (de) | 2002-01-16 |
DE50105871D1 (de) | 2005-05-19 |
ES2239070T3 (es) | 2005-09-16 |
CZ297750B6 (cs) | 2007-03-21 |
CZ2001467A3 (cs) | 2002-03-13 |
DE10005969C1 (de) | 2001-07-05 |
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