DE322543C - Device for the production of hollow metal propellers - Google Patents
Device for the production of hollow metal propellersInfo
- Publication number
- DE322543C DE322543C DENDAT322543D DE322543DD DE322543C DE 322543 C DE322543 C DE 322543C DE NDAT322543 D DENDAT322543 D DE NDAT322543D DE 322543D D DE322543D D DE 322543DD DE 322543 C DE322543 C DE 322543C
- Authority
- DE
- Germany
- Prior art keywords
- production
- hollow metal
- wall thickness
- propellers
- metal propellers
- 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
- B21D53/00—Making other particular articles
- B21D53/78—Making other particular articles propeller blades; turbine blades
Description
IUV ΊIUV Ί
Die Erfindung betrifft ein Verfahren zur Herstellung von hohlen Metallpropellern. Es ist bekannt, solche Propeller durch Pressen mittels einander parallel zu nähernden Preßbacken herzustellen. Dabei liegt die Gefahr vor, daß mehrere voneinander entfernte Punkte gleichzeitig von den Backen erfaßt werden, wodurch Faltungen und Einbeulungen im weiteren Verlauf der Pressung entstehenThe invention relates to a method for manufacturing hollow metal propellers. It it is known to press such propellers by means of pressing jaws which are to be approached parallel to one another to manufacture. There is a risk that several points at a distance from one another will be seized by the jaws at the same time as a result of which folds and dents occur in the further course of the pressing
ίο können. Es ist dabei zu berücksichtigen, daß Metallpropeller die größte Wandstärke und die größte Querschnittshöhe an der Wurzel, die kleinste Wandstärke und kleinste Querschnittshöhe dagegen an der Spitze besitzen.ίο can. It must be taken into account that metal propellers have the greatest wall thickness and the greatest cross-sectional height at the root, the smallest wall thickness and smallest cross-section height own at the top.
Infolgedessen wird das Preßgut dort von den Backen zuerst erfaßt, wo die Wandstärke am kleinsten ist, woraus sich der Nachteil ergibt, daß das immer dicker werdende Material dem Preßvorgang wachsenden Widerstand entgegensetzt, der sich in Faltungen und Einbeulungen zeigt. Das Verfahren gemäß der vorliegenden Erfindung läßt die Deformation umgekehrt von der dickwandigsten Stelle aus beginnen, so daß das in der Richtung des Fortschreitens des Preßvorganges dünner werdende Material zwanglos nachgeben kann.As a result, the material to be pressed is first grasped by the jaws where the wall thickness is the smallest, which has the disadvantage that it becomes thicker and thicker Material opposed to the pressing process increasing resistance, which is in folds and shows indentations. The method according to the present invention allows the deformation to be reversed from that of FIG thick-walled point begin from, so that that in the direction of progression of the Pressing process thinning material can freely give way.
Eine Einrichtung zur Ausführung des Verfahrens gemäß der Erfindung ist auf der Zeichnung, Fig. 1 und 2, in Querschnitt bzw. Grundriß dargestellt.A device for carrying out the method according to the invention is on Drawing, Figs. 1 and 2, shown in cross-section and plan view.
Es ist ι das Preßgut, ein Rohr mit nach der geschlossenen Seite zunehmender Wandstärke, 2 ein Walzenpaar, dessen Profil dem endgültigen Propellerprofil entspricht, wie es in strichpunktierten Linien in die Figuren eingezeichnet ist, 3 sind Zahnräder zum gemeinsamen Antrieb der Walzen. Das Preßgut wird in die in den Figuren dargestellte Anfangsstellung, d, h. mit der dickwandigsten Stelle zwischen die Walzen gelegt und dann ausgewalzt.It is ι the pressed material, a tube with increasing wall thickness towards the closed side, 2 a pair of rollers, the profile of which corresponds to the final propeller profile, like it is shown in dash-dotted lines in the figures, 3 are gears for common Drive the rollers. The material to be pressed is in the initial position shown in the figures, d, h. with the thickest walled Place placed between the rollers and then rolled out.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE322543T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE322543C true DE322543C (en) | 1920-07-02 |
Family
ID=6167872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT322543D Expired DE322543C (en) | Device for the production of hollow metal propellers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE322543C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE940226C (en) * | 1943-11-06 | 1956-04-12 | Ernst Heinkel Ag | Hollow blade for axially flowed turbines |
-
0
- DE DENDAT322543D patent/DE322543C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE940226C (en) * | 1943-11-06 | 1956-04-12 | Ernst Heinkel Ag | Hollow blade for axially flowed turbines |
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