EP1033413A2 - Dispositif pour la trempe de pièces - Google Patents

Dispositif pour la trempe de pièces Download PDF

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Publication number
EP1033413A2
EP1033413A2 EP00104689A EP00104689A EP1033413A2 EP 1033413 A2 EP1033413 A2 EP 1033413A2 EP 00104689 A EP00104689 A EP 00104689A EP 00104689 A EP00104689 A EP 00104689A EP 1033413 A2 EP1033413 A2 EP 1033413A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
workpieces
recording
press
press roller
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
Application number
EP00104689A
Other languages
German (de)
English (en)
Other versions
EP1033413B1 (fr
EP1033413A3 (fr
Inventor
Karl Heess
Karlheinz Schweikert
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.)
Karl Heess GmbH and Co Maschinenbau
Original Assignee
Karl Heess GmbH and Co Maschinenbau
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.)
Filing date
Publication date
Application filed by Karl Heess GmbH and Co Maschinenbau filed Critical Karl Heess GmbH and Co Maschinenbau
Publication of EP1033413A2 publication Critical patent/EP1033413A2/fr
Publication of EP1033413A3 publication Critical patent/EP1033413A3/fr
Application granted granted Critical
Publication of EP1033413B1 publication Critical patent/EP1033413B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C21D1/62—Quenching devices
    • C21D1/63—Quenching devices for bath quenching
    • 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
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching

Definitions

  • the invention relates to a device for quenching workpieces a container containing a quenching medium.
  • a quenching device is described in U.S. Patent No. 4,844,427, in what oil around a gear wheel to be deterred within a housing is led around.
  • the gear wheel is made up of a heat treatment unit (Oven) removed and placed on a table and there by a lamellar expanding mandrel held in a predetermined position.
  • the removal of the workpiece from the stove and its storage and arrangement on the table mean one time consuming work.
  • German patent specification 39 06 425 describes a device for distortion-free Heat treatment of a workpiece after it has been heated by cold Tools are held on which by a quenching liquid flow-through pockets are provided.
  • This indirect quenching is in the Relationship to direct quenching. in which the workpiece with the Quench medium comes into direct contact, lasting longer because of the Thermal resistance of the holding tools during heat transfer from the hot Workpiece to be quenched must be overcome.
  • the invention is therefore based on the object of a device for Quenching workpieces dispensed from a heat treatment unit to create where quenching can be done faster.
  • a press roller is fastened horizontally and rotatably in the container, at least partially immersed in the quenching medium and with a Control device for their rotation is coupled as well as several in Has circumferentially spaced receiving stations, in each Pick-up station held one workpiece each during quenching and is pressed.
  • a large number of successively pick up workpieces that have been released from a furnace, press, quench and dispense.
  • workpieces can, for example Rings, tarpaulins, rods, ball bearing caps, ball bearing raceways, ring seals and the like, which are usually manufactured in large quantities.
  • the Device according to the invention a high throughput of to be hardened Workpieces after a previous heat treatment (carburizing) in an oven.
  • a cold gas or also a Liquid such as water, oil, or even a saline solution.
  • the number of rollers in the circumferential direction is the same spaced recording stations and their drive is controlled so that the press roller is rotated gradually so that after each step a pick-up station is ready for picking up a workpiece.
  • the Throughput of workpieces to be hardened by the device according to the invention is further increased if, in a preferred embodiment of the invention, the press roll is equipped with several axially extending rails, which several have axially spaced receiving stations. Therefore, such a number are simultaneously quenched by workpieces whose number is that of corresponds axially spaced receiving stations within a rail.
  • the number of rails is expediently equal to the number of rails Circumferentially spaced recording stations.
  • each receiving station a cage and a controlled pressing device for clamping and pressing of a workpiece accommodated in the cage comprise a lamellar expanding mandrel which is coupled to an actuator.
  • the Lamellar structure of the expanding mandrel allows direct quenching of the Workpiece by at least those parts of the workpiece that are between the lamellae of the expanding mandrel, the quenching medium directly are exposed.
  • the pressing device is preferably in the Controlled so that it releases a quenched workpiece when the Press roller is in a rotational position that the released workpiece allowed.
  • a sponsor is particularly advantageous connected to the container and extends under the press roller so that the quenched workpieces can be removed from the container.
  • Desire can be a downward sloping slide in the container below the Press roll and preferably be arranged above the conveyor to the Removal of output at different rotational positions of the press roll to facilitate quenched workpieces.
  • the device according to the invention can be in a workpiece processing line be appropriately embedded in such a way that the container dispensing means are assigned, which is a ramp for transferring the deterrent Include workpieces at the pick-up stations. Other times they can Output means of an output opening of a heat treatment unit for the Workpieces must be assigned.
  • each receiving station expediently has one Inlet section on, which forms a continuation of the ramp when the press roller is in a receiving position for a workpiece to be quenched.
  • the Manipulating the incoming workpieces to the correct position in front of the Recording stations are appropriately supported by guide parts that advantageously have a lever for each receiving station, which on attached to a lid of the container and coupled to a controlled drive and, if necessary, a pair of guide strips for each receiving station Provide that are attached over the ramp and to each in one Narrowing the recording position located.
  • cold gas quenching can be held in the container the liquid several connected to a high pressure cold gas source and nozzles directed to the press roll, on which the press roll is provided clamped workpieces is turned over.
  • the quenching device 10 of FIG. 1 includes a generally rectangular one Container 12 that stands on the ground or from a larger machine frame that is not shown, held and is upward and a quenching liquid 14th such as water or oil or a saline solution.
  • a press roller 20 is on their laterally projecting and axially aligned shaft ends 41, 43 in two opposite (not shown) bearings rotatable and horizontal attached, with the bearings in opposite side plates of the container 12 or the frame structure are attached.
  • the press roller is via a gear or similar transmission means (chains or the like) with a motor like that driven that the press roll counterclockwise about its axis 42 turns when the motor is activated.
  • the reproduced in Fig. 1 Sectional view is taken transversely to axis 42. In the shown in Fig. 1 Embodiment of the invention, the press roll 20 is completely in the liquid 14 immersed.
  • a heat treatment unit 17 is upstream of the container 12 arranged that the dispensing opening 18 of the unit is above the mirror 15 the liquid 14 is located.
  • Transfer means 23 here in the form of a group of horizontally attached driven rollers 24 extend horizontally through the Dispensing opening 18 and then bends down into the liquid 14 Forming a ramp 30 with an inclination of approximately 15 ° to 30 °.
  • the ramp 30 ends at the turning circle 25 of the press roller 20, which is shown in broken lines in FIG. 1.
  • a partition 40 is secured in the container 12 and extends in the Liquid 14 from below the dispensing means 23 up to the rotating circle 25 an end section that is in the form of a slide and near and above a conveyor 38 ends.
  • the conveyor 38 comprises one around two rollers 6, 7 circumferential endless belt with drivers, one of which is in the container 12 is attached below the slide and the other above the mirror 15, so that the upper run 39 of the belt along an upwardly extending slope runs out of the liquid 14.
  • a substantially rectangular overhead structure 35 has a vertical one Side wall 16, which is immersed in the liquid 14 and thus an airtight Seal of the space below the lid 35 forms, the space over the Dispensing opening 18 with the inside of the heat treatment unit 17 communicates.
  • the cover plate 33 of the cover 35 carries a number of parallel ones Drive means Z1, each comprising a piston-cylinder drive.
  • the Eye of the piston rod is articulated on an arm H1 of a two-sided lever, whose other arm SA1 extends into the space under the cover 35.
  • the end positions of the piston of the drive means Z1 is the end of the arm SA1 raised via ramp 30 and in the other end position of the piston Arm SA1 is lowered onto the press roll 20 in the manner shown by the broken line in FIG. 1 is indicated.
  • One opposite the side wall 16 and to it in substantially parallel side wall 31 of the lid 35 separates the space under the Cover 35 from the heat treatment unit 17 and ends near the Dispensing opening 18.
  • the press roll 20 is provided with four parallel and axially extending rails 51, 53, 55, 57 equipped, the one another in the circumferential direction by an angle of Are 90 ° apart.
  • Each rail has a series of six receiving stations on. those for the rail 51 as A11, A12, A13, A14, A15, A16 and for the rail 53 are designated as A21, A22 ...., A26.
  • the press roll 20 includes a Line network (not shown) for a medium under pressure (e.g. oil), which with connecting means, not shown, in the shaft ends 41, 43 with a medium pressure source is connected. All six recording stations one Rails are connected to the pipeline network via a controllable valve connected so that there are a total of four valves for all four rails, each are independently controllable.
  • a medium under pressure e.g. oil
  • FIG. 3 The illustration of the press roll 20 in FIG. 3 shows only the general one Structure. Details like the cages and the associated items like them described below have been omitted from FIG. 3.
  • the Recording station A11 comprises an actuator 58 which with a plunger 82 Expansion mandrel 70 is coupled. If the actuator is controlled by appropriate controls of the associated valve with low pressure oil, he lets the Move the plunger 82 into a raised position. On the other hand, if the actuator is subjected to higher oil pressure, it pulls the plunger 82 axially inward thereby causing the expanding mandrel to cause a workpiece 95 to be hardened clamp and press.
  • the expanding mandrel 70 has a cylindrical hollow body 72 inside which the actuator 58 and the associated plunger are housed.
  • cylindrical cage 74 is on the body 72 in alignment with the axis 90 of the Body 72 attached.
  • a base plate 76 of the cage 74 has a central one Through hole through which the plunger 82 extends axially.
  • Several radially extending grooves are in the inner surface of the base plate 76 incised. Two opposite of these grooves are denoted by 71, 73.
  • the grooves have a circumferential direction respective distance of 10 degrees, so that there is a total of thirty-five grooves 71, 73 in the inner surface of the base plate 76 there.
  • each of the grooves receives one of the segments in such a way that the upright side surface 68, 78 of each segment 75, 77 extends parallel to the axis 90 of the associated groove 61, 73.
  • the plunger 82 is firmly connected to a central cone 80.
  • Each segment 75, 77 is provided with a through hole 86, 88 so that one is not coil spring shown in the circumferential direction through all through holes of all Segments, and the segments against the cone 80 as shown System presses.
  • a light detector 34 which is attached to the wall 31, signals one Control unit 32 the arrival of the workpieces to be hardened.
  • the control device 32 determined by not based on the signal received from detector 34 sensors shown whether the press roll 20 is shown correctly in FIG. 1 Has taken position to hold a series of workpieces. If the position of the press roller 20 is correct, the control device 32 activates one Drive motor 26 for the output means 23. This turns workpieces into Ramp 30 promoted along which they descend to due to their gravity associated pick-up stations A11 to A16 of the press roller 20 slide.
  • Guide strips 43, 44 which extend just above the ramp 30, prevent one of the workpieces from moving correctly Reception station A11 to A16 can move sideways. So they lead Guide strips 48 and 49 each have a workpiece for the receiving station A11, Guide strips 50 and 51 each have a workpiece for the receiving station A12 and Similar pairs of guide rails define the path laterally a workpiece to the associated pick-up station.
  • the press roller 20 is upstream of each receiving station with an inlet section 29 equipped, which is formed by a group of horizontal rollers that the Continue ramp 30 when the platen roller 20 is in the position shown in FIG. 1 has accepted.
  • the control device 32 activates the drive means Z1 synchronized with the downward sliding of the workpieces, whereby the lever SA1 in Counterclockwise direction in a position shown in dashed lines in Fig. 1 swings in to push a workpiece against the stop 63 and against it Bring attachment.
  • the workpieces each have the shape of a cylindrical Have rings 95 with an inner ring surface 96 and an outer ring surface.
  • the actuator is activated so that the plunger 82 pulls the cone inward, all segments 75, 77 against the inner ring surface 96 and the ring 95 pressed against the side surface 65 of the side wall 62, whereby the ring 95 in Clamping space 67 is clamped and held pressed.
  • the ring therefore has no possibility of deformation during quenching or for default.
  • the shapes of the surfaces 65 and 68, 78 can easily match the The shape of the workpiece to be quenched can be adapted. If the workpiece is conical, as is shown for the first workpiece of the row 36 in FIG. 1, are both the surface 65 and the surfaces 68, 78 of all segments accordingly conical with respect to axis 90.
  • the invention can also be modified so that only one lever SA1 common to all Recording stations A11 to A16 provided or alternatively each of the Pickup stations are each assigned a lever, so that the lever SA1 for Recording station A1, a parallel lever SA2, which is also connected to the drive Z1 is coupled, the receiving station A12 and similarly lever SA16 the Recording station A16 are assigned.
  • the press roll 20 After the workpieces in a row in the clamping areas of the Recording stations A11 to A16 have been clamped and pressed the central control of the machine, the press roll 20 in the opposite direction of the Turn clockwise 90 ° and then stop.
  • the recording stations A21 to A26 are now in a position in which workpieces one new series can be picked up, clamped and pressed. If those Workpieces are clamped and pressed, the press roller 20 is caused to Continue rotation by a further 90 ° so that the receiving stations A31 to A36 Now pick up and clamp the workpieces of the next row.
  • the Recording stations A11-A16 are now above the slide of the Partition 40.
  • the temperature in the Workpieces held in the receiving station must be sufficiently lowered so that then the actuator 58 is deactivated and the plunger 82 is released.
  • the Workpieces can then move out of the clamping area due to their gravity the slide fall, slide down this onto the conveyor 38, which is this Workpieces removed from the machine.
  • the press roller 20 will turn another 90 °.
  • the receiving stations A41-A46 are now in a position in which they can hold workpieces from the next row are ready.
  • the actuator 58 is deactivated and the Workpieces from all pick-up stations A11-A16 can now be on conveyor 38 fall out.
  • the next rotation of the press roller by a further 90 ° transfers it back to the starting position explained above.
  • the period of quenching can vary depending on the material and strength of the workpieces can be selected.
  • Thin workpieces can only be a short one Require a quenching period so that they can leave the receiving stations after a Rotation of the press roller 20 by only 180 ° from its initial position can be released.
  • Other workpieces can rotate the Press roller un require 270 ° within the liquid 14 before it is sufficient are put off. Whether a rotation of the press roller 20 by 180 ° is sufficient or one Rotation of the same by 270 ° is also required by the arrangement of the Press roller 20 inside, the liquid 14 depend.
  • For a special kind of Workpieces may be sensible to the loading position of the pickup stations which the workpieces are fed outside, i.e. above level 15 to provide the liquid 14. The press roller 20 is then only partially in the Liquid 14 immersed.
  • the press roll 20 has four of the same spaced rails 51, 53, 55, 57.
  • the invention can also be designed so that the press roller only two or three rails or itself has more than four rails.
  • the number of admission stations not important. There can be more than six or fewer recording stations per Rail may be provided.
  • the respective structure of the press roller 20 can thus easily adapted to the properties of the heat treatment unit 17, in particular how many workpieces in parallel and how fast the workpieces from the heat treatment unit 17 can be processed and output.
  • the receiving stations can be clamped and pressed be provided, which are different from the expanding mandrel described above. If the workpieces to be deterred have the form of a tarpaulin, they can Segments of the expanding mandrel are replaced by an expanding plate against the Workpiece is pressed when the actuator is activated. A similar The device can clamp and press rod-shaped workpieces between allow a press plate and the surface 65. The cage 74 is then natural not round. as described above, but rectangular, roughly corresponding to the right half or left half of the cage shown in Figure 4.
  • pressing means can be provided on the side wall of the cage have a press beam which is articulated on the cage so that the Press bar remains outside the clamping area until a workpiece is in the clamping area has fallen into, and then into the clamping area pivoted in and down in this to act on the workpiece a pressing force is moved.
  • the clamping and pressing means of the Receiving station adapted to the shape of the work piece to be quenched become.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
EP00104689A 1999-03-04 2000-03-03 Dispositif pour la trempe de pièces Expired - Lifetime EP1033413B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909478 1999-03-04
DE19909478A DE19909478C2 (de) 1999-03-04 1999-03-04 Vorrichtung zum Härten von Teilen

Publications (3)

Publication Number Publication Date
EP1033413A2 true EP1033413A2 (fr) 2000-09-06
EP1033413A3 EP1033413A3 (fr) 2003-07-30
EP1033413B1 EP1033413B1 (fr) 2005-08-31

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ID=7899673

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EP00104689A Expired - Lifetime EP1033413B1 (fr) 1999-03-04 2000-03-03 Dispositif pour la trempe de pièces

Country Status (3)

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EP (1) EP1033413B1 (fr)
AT (1) ATE303452T1 (fr)
DE (2) DE19909478C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103725837A (zh) * 2014-01-23 2014-04-16 唐山亚捷机械有限公司 油中自由冷却、机床上马氏体转变的压模淬火工艺及设备
CN108148962A (zh) * 2018-01-12 2018-06-12 莱芜钢铁集团有限公司 更换炉底辊用工装及其使用方法
CN110343838A (zh) * 2019-08-02 2019-10-18 宁夏机械研究院股份有限公司 一种用于多阶内孔齿轮的淬火模具及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015202464B4 (de) 2015-02-11 2018-10-25 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zur Wärmebehandlung von metallischen Bauteilen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU276124A1 (ru) * В. И. Зюзин , Е. В. Лазарев Устройство для охлаждения проката в процессе его термообработки
DE918445C (de) * 1952-04-08 1954-09-27 Siemag Vertriebsgesellschaft M Rotierende Kuehl- oder Haertevorrichtung, insbesondere fuer Walzgut
GB991697A (en) * 1964-08-27 1965-05-12 G Sousny I Proekt Metall Zd Ov Machine for through quenching of rolled profiles especially of railway rails
GB1097029A (en) * 1965-05-06 1967-12-29 Fives Lille Cail Installation for the cooling of slab blooms or similar products
US3508979A (en) * 1965-03-20 1970-04-28 Siegener Maschinenbau Gmbh Method for cooling workpieces
GB1503189A (en) * 1974-10-24 1978-03-08 Hoesch Werke Ag Cooling apparatus for rolled stock
DE3621789C1 (en) * 1986-06-28 1987-06-19 Wolfgang Kohnle Installation for tempering metal parts in a continuous operation
DE19608401A1 (de) * 1995-03-11 1996-09-12 Heess Karl Maschinen Spreizdorn für Härtevorrichtungen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU276124A1 (ru) * В. И. Зюзин , Е. В. Лазарев Устройство для охлаждения проката в процессе его термообработки
DE918445C (de) * 1952-04-08 1954-09-27 Siemag Vertriebsgesellschaft M Rotierende Kuehl- oder Haertevorrichtung, insbesondere fuer Walzgut
GB991697A (en) * 1964-08-27 1965-05-12 G Sousny I Proekt Metall Zd Ov Machine for through quenching of rolled profiles especially of railway rails
US3508979A (en) * 1965-03-20 1970-04-28 Siegener Maschinenbau Gmbh Method for cooling workpieces
GB1097029A (en) * 1965-05-06 1967-12-29 Fives Lille Cail Installation for the cooling of slab blooms or similar products
GB1503189A (en) * 1974-10-24 1978-03-08 Hoesch Werke Ag Cooling apparatus for rolled stock
DE3621789C1 (en) * 1986-06-28 1987-06-19 Wolfgang Kohnle Installation for tempering metal parts in a continuous operation
DE19608401A1 (de) * 1995-03-11 1996-09-12 Heess Karl Maschinen Spreizdorn für Härtevorrichtungen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103725837A (zh) * 2014-01-23 2014-04-16 唐山亚捷机械有限公司 油中自由冷却、机床上马氏体转变的压模淬火工艺及设备
CN108148962A (zh) * 2018-01-12 2018-06-12 莱芜钢铁集团有限公司 更换炉底辊用工装及其使用方法
CN110343838A (zh) * 2019-08-02 2019-10-18 宁夏机械研究院股份有限公司 一种用于多阶内孔齿轮的淬火模具及装置
CN110343838B (zh) * 2019-08-02 2024-03-12 宁夏机械研究院股份有限公司 一种用于多阶内孔齿轮的淬火模具及装置

Also Published As

Publication number Publication date
ATE303452T1 (de) 2005-09-15
DE19909478C2 (de) 2003-04-10
DE50011043D1 (de) 2005-10-06
DE19909478A1 (de) 2000-11-23
EP1033413B1 (fr) 2005-08-31
EP1033413A3 (fr) 2003-07-30

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