DE2733296C2 - Device for calibrating a housing bore - Google Patents
Device for calibrating a housing boreInfo
- Publication number
- DE2733296C2 DE2733296C2 DE19772733296 DE2733296A DE2733296C2 DE 2733296 C2 DE2733296 C2 DE 2733296C2 DE 19772733296 DE19772733296 DE 19772733296 DE 2733296 A DE2733296 A DE 2733296A DE 2733296 C2 DE2733296 C2 DE 2733296C2
- Authority
- DE
- Germany
- Prior art keywords
- housing
- die
- calibrating
- outside
- housing bore
- 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
Links
Classifications
-
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/202—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with guides parallel to the tube axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Punching Or Piercing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
2020th
Die Erfindung betrifft eine Vorrichtung zum Kalibrieren einer Gehäusebohrung nach dem Oberbegriff des Anspruchs 1, insbesondere zur Herstellung von Gehäusen für elektrische Maschinen. Der Innendurchmesser eines Gehäuses einer elektrischen Maschine muß sehr genau ausgeführt sein, damit die elektrischen Teile, wie der Rotor oder der Stator und die Spule derart gelagert sind, daß sich zwischen ihnen ein sehr exakter Luftspalt ausbilden kann.The invention relates to a device for calibrating a housing bore according to the preamble of Claim 1, in particular for the production of housings for electrical machines. The inside diameter a housing of an electrical machine must be carried out very precisely so that the electrical parts, such as the rotor or the stator and the coil are mounted in such a way that there is a very precise air gap between them can train.
Bei den bekannten Vorrichtungen zum Kalibrieren einer Bohrung für die vorbeschriebenen Gehäuse wird entweder keine Matrize verwendet oder die zur Abstützung der Außenseite des Gehäuses verwendete Matrize besitzt eine glatte Fläche. Die Matrize muß an die unterschiedlichen Toleranzen des zur Herstellung des Gehäuses verwendeten Bleches angepaßt sein. Trotzdem verlängert sich beim Eindringen des Kalibrierwerkzeugs das Gehäuse mehr oder weniger stark, weil das überschüssige Material wegen der an der Außenseite vorhandenen glatten genau passenden Fläche zu den offenen Enden des Gehäuses bewegt wird, so daß dann eine zusätzliche Bearbeitungsphase notwendig ist, damit das Gehäuse auf die richtige Länge gebracht wird, was wiederum zur Folge hat, daß der Selbstkostenpreis eines solchen Gehäuses erhöht ist.In the known devices for calibrating a bore for the above-described housing either no die used or the die used to support the outside of the housing has a smooth surface. The die must adapt to the different ones Tolerances of the sheet metal used to manufacture the housing must be adapted. Nevertheless If the calibration tool penetrates, the housing is lengthened to a greater or lesser extent because that Excess material because of the smooth, precisely fitting surface on the outside of the open ends of the housing is moved, so that then an additional processing phase is necessary with it the housing is brought to the correct length, which in turn has the consequence that the cost price such a housing is increased.
Hieraus resultiert die Aufgabe, diese zusätzliche Bearbeitungsphase zu vermeiden.This results in the task of this additional processing phase to avoid.
Die Lösung dieser Aufgabe besteht darin, daß die Matrize an ihrer Innenseite, welche gegen die Außenseite des Gehäuses anliegt, mehrere Ausnehmungen auf- so weist, in welche der durch das Eindringen des Kalibrierdorns verdrängte Werkstoff des Gehäuses eintreten kann.The solution to this problem is that the die on its inside, which against the outside of the housing rests, has several recesses into which the penetration of the calibration mandrel displaced material of the housing can occur.
Hiervon geht die vorteilhafte Wirkung aus, daß sich die Materialausdehnung auf die Außenseite des Gehäuses verlagern kann und die Gehäuselänge konstant bleibt.This has the advantageous effect that the material expands to the outside of the housing can shift and the housing length remains constant.
Durch die US-PS 27 37 225 ist zwar eine Vorrichtung zum Verformen rohrförmiger Hohlkörper bekannt, bei der ein Formdorn in die Bohrung des Werkstücks eingepreßt wird, welches seinerseits von einer Matrize gehalicii wird, die auf ihrer an der Außenseite des Werk-Stücks anliegenden Innenseite mit Längsrillen versehen ist. Die Längsrillen dieser Matrizen dienen jedoch nur den besseren Reibungsverhältnissen zwischen der Matrize und dem Werkstück, während an der einen Stirnseite des rohrförmigen Werkstücks durch einen Dorn eine Aufweitung erfolgt. Diese bekannte Vorrichtung ist also für das Kalibrieren des gesamten Innendurchmessers des rohrförmigen Werkstücks weder bestimmt noch geeignetFrom US-PS 27 37 225 a device for deforming tubular hollow bodies is known in which a mandrel is pressed into the bore of the workpiece, which in turn gehalicii from a die that will be on their on the outside of the work-piece adjacent inside is provided with longitudinal grooves. However, the longitudinal grooves of these matrices are only used the better friction conditions between the die and the workpiece, while on the one end face the tubular workpiece is expanded by a mandrel. This known device is thus neither intended for the calibration of the entire inner diameter of the tubular workpiece still suitable
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels anhand der Zeichnung. Darin zeigtFurther features, details and advantages of the invention emerge from the following description of a preferred embodiment based on the drawing. In it shows
F i g. 1 eine Radialschnittansicht durch die erfindungsgemäße Vorrichtung,F i g. 1 shows a radial sectional view through the device according to the invention,
F i g. 2 eine Längsschnittansicht durch die in der F i g. 1 dargestellte Vorrichtung.F i g. FIG. 2 shows a longitudinal sectional view through the FIG. 1 shown device.
In an sich bekannter Weise wird ein Gehäuse 1 vor dem Kalibrieren in einer Matrize 3 angeordnet, so daß sich in Längsrichtung des Gehäuses ein Kalibrierdorn 2 hindurchbewegen kann, um in dem Gehäuse 1 eine Bohrung mit einem sehr gleichmäßigen Durchmesser zu erzeugen. In a manner known per se, a housing 1 is arranged in a die 3 before the calibration, so that A calibration mandrel 2 can move through it in the longitudinal direction of the housing in order to create a bore in the housing 1 to produce with a very uniform diameter.
Gemäß der Erfindung weist die Matrize an ihrem Innendurchmesser Rillen auf, welche Freiräume bilden, die die Materialausdehnungen la aufnehmen können, wenn das Gehäuse während des Durchtretens des Kalibrierdorns 2 nach außen gedrückt wird.According to the invention, the die has grooves on its inner diameter which form free spaces, which can accommodate the material expansions la if the housing during the passage of the calibration mandrel 2 is pushed outwards.
Die Materialausdehnung la verteilt sich daher gleichmäßig auf die Außenfläche des Gehäuses 1, so daß dieses sich nicht in Achsrichtung verlängert und damit die Länge A (siehe Fig.2) des Gehäuses 1 unverändert bleibt, wenn das Metall kaltverformt wird. Es ist deshalb nicht notwendig, an den Enden des Gehäuses Bearbeitungen vorzunehmen, so daß das Bearbeitungsverfahren wirtschaftlich istThe material expansion la is therefore evenly distributed over the outer surface of the housing 1, so that it does not lengthen in the axial direction and thus the length A (see FIG. 2) of the housing 1 remains unchanged when the metal is cold-worked. It is therefore not necessary to work on the ends of the housing, so that the machining process is economical
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7622499A FR2358941A1 (en) | 1976-07-23 | 1976-07-23 | BALE CALIBRATION PROCESS, ESPECIALLY FOR THE MANUFACTURING OF CASINGS FOR ROTATING ELECTRIC MACHINES |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2733296A1 DE2733296A1 (en) | 1978-01-26 |
DE2733296C2 true DE2733296C2 (en) | 1986-11-27 |
Family
ID=9176057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772733296 Expired DE2733296C2 (en) | 1976-07-23 | 1977-07-22 | Device for calibrating a housing bore |
Country Status (6)
Country | Link |
---|---|
DE (1) | DE2733296C2 (en) |
ES (1) | ES460974A1 (en) |
FR (1) | FR2358941A1 (en) |
GB (1) | GB1590959A (en) |
IT (1) | IT1081634B (en) |
TR (1) | TR19509A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3942212C2 (en) * | 1989-12-21 | 1998-11-05 | Teves Gmbh Alfred | Process for producing a metallic sealing clearance between an inner and an outer part and parts which can be joined into one another for use of the method |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2737225A (en) * | 1951-09-20 | 1956-03-06 | Mathew S Jasinski | Pipe flaring device |
-
1976
- 1976-07-23 FR FR7622499A patent/FR2358941A1/en active Granted
-
1977
- 1977-06-17 GB GB2542377A patent/GB1590959A/en not_active Expired
- 1977-07-15 TR TR1950977A patent/TR19509A/en unknown
- 1977-07-22 ES ES460974A patent/ES460974A1/en not_active Expired
- 1977-07-22 IT IT2601077A patent/IT1081634B/en active
- 1977-07-22 DE DE19772733296 patent/DE2733296C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
TR19509A (en) | 1979-03-29 |
IT1081634B (en) | 1985-05-21 |
GB1590959A (en) | 1981-06-10 |
DE2733296A1 (en) | 1978-01-26 |
ES460974A1 (en) | 1978-05-16 |
FR2358941B1 (en) | 1978-12-22 |
FR2358941A1 (en) | 1978-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |