[go: up one dir, main page]

DE971987C - Arrangement for inductive heating of toothed wheels - Google Patents

Arrangement for inductive heating of toothed wheels

Info

Publication number
DE971987C
DE971987C DES12493D DES0012493D DE971987C DE 971987 C DE971987 C DE 971987C DE S12493 D DES12493 D DE S12493D DE S0012493 D DES0012493 D DE S0012493D DE 971987 C DE971987 C DE 971987C
Authority
DE
Germany
Prior art keywords
gear
arrangement
inductive heating
toothed wheels
tooth
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
Application number
DES12493D
Other languages
German (de)
Inventor
Heinz Dr Phil Niehrs
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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Siemens Corp filed Critical Siemens Corp
Priority to DES12493D priority Critical patent/DE971987C/en
Application granted granted Critical
Publication of DE971987C publication Critical patent/DE971987C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/40—Establishing desired heat distribution, e.g. to heat particular parts of workpieces
    • H05B6/405—Establishing desired heat distribution, e.g. to heat particular parts of workpieces for heating gear-wheels

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Heat Treatment Of Articles (AREA)
  • Gears, Cams (AREA)

Description

Um die Oberfläche von Zahnrädern zu härten, ist es bekannt, das Zahnrad auf induktivem Wege kurzzeitig zu erwärmen und dann abzuschrecken. Zu diesem Zweck hat man einen Glühübertrager vorgesehen, der eine Primärwicklung besitzt und dessen Sekundärteil aus einem geschlitzten Zylinder und einer geschlitzten Scheibe mit Innenverzahnung besteht, in welche das Zahnrad eingesetzt wird. Die Erregung der Primärwicklung erfolgtIn order to harden the surface of gearwheels, it is known to induce the gearwheel to warm up briefly and then to quench. A glow transformer is used for this purpose provided, which has a primary winding and its secondary part from a slotted cylinder and a slotted disc with internal teeth, into which the gear is inserted will. The primary winding is excited

ίο mit Strömen von höherer Frequenz, z. B. von io5 bis io6 Hz.ίο with currents of higher frequency, e.g. B. from io 5 to io 6 Hz.

Bei derartigen Einrichtungen hat es sich nun gezeigt, daß die Tiefe der gehärteten Schicht im Zahnkopf größer ist als am Zahngrund. Um dies zu vermeiden und um eine möglichst gleichmäßige Dicke der gehärteten Schicht zu erzielen, wird erfindungsgemäß der Luftspalt zwischen Scheibe und Zahnrad so gewählt, daß er am Zahiikopf des Zahnrades größer ist als am Zahngrund des Zahnrades.With such devices it has now been shown that the depth of the hardened layer in the tooth head is larger than at the tooth base. To avoid this and to ensure that the thickness is as uniform as possible To achieve the hardened layer, according to the invention, the air gap between the disk and the gearwheel chosen so that it is larger at the top of the gear than at the base of the gear.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Fig. ι zeigt den Glühübertrager und das Zahnrad im Schnitt,Fig. Ι shows the glow transformer and the gear in section,

Fig. 2 in Draufsicht.Fig. 2 in plan view.

Der Glühübertrager 1 besteht aus der Spule 2, dem Hohlzylinder 3 und der Scheibe 4, die einen radialen Schlitz 5 besitzen. Mit 6 ist das zu härtende Zahnrad bezeichnet. Die Scheibe 4 besitzt eine Innenverzahnung. Der Luftspalt zwischen dieser Innenverzahnung und dem Zahnrad ist nun so gewählt, daß er am Grunde des Zahnes des Zahn-The glow transformer 1 consists of the coil 2, the hollow cylinder 3 and the disk 4, the one have radial slot 5. With 6 the gear to be hardened is referred to. The disc 4 has an internal toothing. The air gap between these internal teeth and the gear is now chosen so that it is at the base of the tooth of the tooth

. rades kleiner ist als am Zahnkopf des Zahnrades.. wheel is smaller than at the tooth tip of the gear.

Dies ist in vergrößertem Maßstab in Fig. 3 nochmals dargestellt. Hier ist mit 6 ein Teil des Zahnrades und mit 4 ein Teil der Scheibe bezeichnet. Die Breite des Luftspaltes bt am Zahnkopf des Zahnrades ist größer als die Breite b% am Zahngrund des Zahnrades (Verhältnis ungefähr 4:1). Damit die Eindringtiefe der Härtung nicht zu groß wird, ist es zweckmäßig, die Leistung, die auf das Zahnrad übertragen wird, und die Frequenz des erregenden Stromes so zu wählen, daß die Glühzeit 0,6 Sekunden nicht übersteigt.This is shown again on an enlarged scale in FIG. 3. Here, 6 denotes a part of the gear and 4 denotes a part of the disk. The width of the air gap b t at the tooth tip of the gear is greater than the width b % at the tooth base of the gear (ratio approximately 4: 1). So that the penetration depth of the hardening is not too great, it is advisable to choose the power that is transmitted to the gear and the frequency of the exciting current so that the glow time does not exceed 0.6 seconds.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: In Betracht gezogene Druckschriften:Considered publications: Deutsches Gebrauchsmuster Nr. 1 538469;German utility model No. 1 538469; USA.-Patentschrift Nr. 1 378 187;U.S. Patent No. 1,378,187; Journal of Applied Physics, 1940, S. 816ff;Journal of Applied Physics, 1940, pp. 816ff; V. P. Wologdin, Oberflächenhärtung nach dem Induktionsverfahren (deutscheÜbersetzung), S. 198 bis 200; V. P. Wologdin, Surface hardening after the induction process (German translation), pp. 198 to 200; Revue Generale de l'Electricite, 1938, S. 495 bis 510.Revue Generale de l'Electricite, 1938, pp. 495 to 510. Anordnung zum induktiven Erwärmen von Zahnrädern zum Zwecke der Oberflächenhärtung mit Hilfe eines Glühübertrages, dessen Sekundärteile aus einem geschlitzten Zylinder und einer geschlitzten Scheibe mit Innenverzahnung besteht, dadurch gekennzeichnet, daß die Innenzahnung so ausgebildet ist, daß der Luftspalt zwischen Scheibe und Zahnrad am Zahnkopf des Zahnrades größer ist als am Zahngrund des Zahnrades.Arrangement for inductive heating of gears for the purpose of surface hardening with the help of a glow transfer whose secondary parts consist of a slotted cylinder and a slotted disc with internal teeth, characterized in that the internal teeth are designed so that the air gap between the disc and the gear on the Tooth top of the gear is larger than at the tooth base of the gear. Hierzu 1 Blatt Zeichnungen1 sheet of drawings 909 505/40 4.59909 505/40 4.59
DES12493D 1944-10-18 1944-10-18 Arrangement for inductive heating of toothed wheels Expired DE971987C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES12493D DE971987C (en) 1944-10-18 1944-10-18 Arrangement for inductive heating of toothed wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES12493D DE971987C (en) 1944-10-18 1944-10-18 Arrangement for inductive heating of toothed wheels

Publications (1)

Publication Number Publication Date
DE971987C true DE971987C (en) 1959-05-06

Family

ID=7474013

Family Applications (1)

Application Number Title Priority Date Filing Date
DES12493D Expired DE971987C (en) 1944-10-18 1944-10-18 Arrangement for inductive heating of toothed wheels

Country Status (1)

Country Link
DE (1) DE971987C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1378187A (en) * 1918-10-09 1921-05-17 Ajax Electrothermic Corp Focus inductor-furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1378187A (en) * 1918-10-09 1921-05-17 Ajax Electrothermic Corp Focus inductor-furnace

Similar Documents

Publication Publication Date Title
DE3506750C1 (en) Process for creating color markings on a catheter guidewire
DE971987C (en) Arrangement for inductive heating of toothed wheels
DE1905494C3 (en) Method and device for the manufacture of a balance spring
DE2404997C2 (en) Dental root canal instrument
DE887354C (en) Arrangement for inductive heating of toothed wheels for the purpose of surface hardening
DE767185C (en) Process for electro-inductive surface heating of metallic workpieces
DE1583329B1 (en) Method and device for increasing the torsional fatigue strength of inductively hardened crankshafts
DE917201C (en) Device for inductive heating of grooved or chamfered workpieces
DE966784C (en) Device for surface hardening of gears
DE969849C (en) Incandescent coil for inductive heating of metal bodies
DE969414C (en) Arrangement for inductive heating of a limited section of metallic workpieces
DE102013100154A1 (en) Method for heating workpieces to hardening temperature
DE967858C (en) Device for surface hardening of metal workpieces
DE903615C (en) Method for hardening gears by means of induction
DE939823C (en) Method for adjusting the course of change of a controllable self-induction with a magnetizable core that can be inserted into the coil to a nominal characteristic
DE628485C (en) Manufacture of a multi-part hardened gear
DE920502C (en) Device for heating, for example for gluing and gluing, of materials of great length, z. B. made of wood, in an alternating electric field using capacitor field electrodes
DE892208C (en) Device for electro-inductive heating of metallic workpieces
DE639617C (en) Method for determining the high-frequency energy converted in the tissue when treating biological tissue with short- and ultra-short-wave electrical oscillations
DE950297C (en) Process for the production of hollow, tubular objects made of hardened steel, e.g. B. Piston pin
DE1583329C (en) Method and device for increasing the torsional fatigue strength inductively hardened crankshafts
DE888141C (en) Heat conductor loop for inductive heat treatment, in particular of toothed wheels
DE688325C (en) Process for hardening gears using an oxy-fuel flame
DE973271C (en) Method and device for hardening toothed scissors
DE870000C (en) Induction heating coil