DD208927A1 - METHOD AND CUTTING TOOL FOR INCOMPLETE CUTTING STAENDER - CLEANING BLADE CONTOURS - Google Patents

Abstract

THE INVENTION CONCERNS A SPECIAL FORM OF THE WORK STAGE CUTTING PROCESS AND ITS SUCCESSIVE CUTTING TOOL FOR INCOMPLETE CUTTING STAINERS - CABLE BLADES FOR ELECTRIC MACHINES, ESPECIALLY ASYNCHRONOUS MOTORS IN BROKERAGE MANUFACTURING. IN ITS ENVIRONMENT, THE TASK IS HAVE BEEN ESTABLISHED THAT THE CONCENTRIC CONTOURS ACHSLOCH, STAENDERBLECHINNDURCHMESSER AND STAENDERBLECHAUSSDIENGERMESSER IN A WORKFORCE. CUT OUT. FOR IMPLEMENTATION OF THAT PROCEDURE IS A FIVE PROFESSIONAL IMPACT TOOLS PROPOSED TO WHICH IN ALTERNATE KNOWN WAY THE FIRST WORKING STROKE THE rotor slots SECOND CLOCK THE stator slots CUT IN THE THIRD STROKE THE LAEUFERBLECHACHSLOCH STAMPED AND STAENDERBLECHINNENDURCHMESSER pre-cutting, IN THE FOURTH STROKE THE LAEUFERBLECHVERBINDUNGSSTEGE DISCONNECT AND LAEUFERBLECH BY BAUTEILABFUEHRUNGSSYSTEM PRESS, IN STEERING TAKT, DISCONNECT INTERIOR PLATE CONNECTORS, AND PRESS STATION PLATE THROUGH DISCHARGE SYSTEM.

Description

236352

VEB Elektromotorenwerke Thurm, 14. 12. 81 Thurm

9527 Thurm Ernst-Thälmann-Straße 86 AB Property rights Pat.-Ing. Hans coal

Title ; "Procedure and Sower for incomplete die cutting Ständer - Läufererblechringkonturen"

Field of application of the invention :

The invention relates to a method and cutting tool for incomplete diecutting} so that the stamped parts, stator and rotor laminations for electric motors are still connected with the metal strip up to the respective last soniting sequence. Preferably, the solution according to the invention can be applied in the stamping technique in the pine sheet processing.

Object of the invention :

The aim of the invention is, in the subsequent cutting of stator u. Rotor sheets to minimize positioning error of the metal strip in their effect on the accuracy of the components to be punched by a process and cutting tool in which all concentric contours in one

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Stepped or cut out. This is ensured according to the invention that the usual stroke rates and component removal systems of progressive cutting machines can be used.

Furthermore, it is further enhanced that higher utility properties and quality improvements of the stamped components are achieved.

Characteristic of the known solutions Four-fold sequential cuts are known in which in the first working stroke axle hole and rotor grooves, in the second cycle stator grooves and rivet holes and / or welding grooves are punched, in the third cycle the rotor plate with a diameter corresponding to the stator bore, and finally in the fourth cycle the stator plate From the metal strip is pressed · With such four-fold cut sheets punched sheets but requires that the air gap is subsequently produced by machining.

Next five-fold sequences are known in which in a known manner at the first power stroke axle hole and rotor grooves, in the second cycle the stator grooves are punched. Notwithstanding the known type, the rotor plate is no longer cut with a larger, but now with its final finished diameter in the fourth cycle, punched in the fourth cycle, the air gap corresponding narrow ring so that the stator plate brought to its inner diameter to finished size, and in turn, the stator is cut out in the fifth cycle.

The indicated methods have the disadvantages that the occurring positioning errors of the metal strip in the sucking tool enter into the component tolerance.

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In the five-fold cut, due to the length of the cutting tool, even greater positioning errors of the strip and corresponding high degree of inaccuracy of the components must be reconciled.

The same applies to conventional Vierfachfolgeschnitte in mehrreihiger execution, in which, for design reasons, empty sequences must be provided.

Essence of the invention :

Der.Erfindung the object of the invention is to develop a method and cutting tool that is able to minimize the pole cutting of stator and rotor sheets positioning error of the metal strip in their effect on the accuracy of the components to be punched.

According to the invention the object is achieved in that the concentric contours axis hole, stator inner diameter and outer stator outer diameter in a sequence from the sheet metal strips are pre-cut or cut ·

Furthermore, a five-fold tailing tool for carrying out the mentioned method is proposed, in which the runner and stator outer diameter connecting webs have a symmetrical 3 and / or multiple division approaching the respective circumference during pre-cutting.

Next follows in the deviating manner known in the first cycle the rotor grooves, and in the second cycle the Ständeruten cut, punch the Läufererblechachsloch in the third cycle and Ständerblechinnendurchmesser- and outside diameter precut in the fourth cycle the Läufererblechverbindungsstege in a preferred semicircular increase separate and rotor plate by tool part

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Press in the component removal system, in the fifth cycle Ständerverbindungsstege also separate in a preferred semicircular recess, which serve in the further sequence of work to the stator core. For the time being, however, the stator plates are discharged in a clock-bound manner via a component removal system for intermediate treatment. Furthermore, the method and cutting tool can be used as 2 and / or multi-row arrangement according to the principle of the invention.

In the drawings, each an embodiment of the subject invention, method and cutting tool is shown.

The punches occurring at the individual working strokes are visually strong, highlighted in the drawing.

FIG. 1 shows a sectional distribution according to the method, shown schematically.

Fig. 2 shows a sectional view of the third cutting stage, shown schematically.

Implementation example ι

In Fig. 1 in the first cycle from the metal strip 1, the rotor grooves 2, in the second cycle, the stator grooves 3 punched, the third cycle determines the punching of Läufererbleohaohslochs 4 and Ständerbleohendendurohmesser 4 a and 4b outer diameter

precutting, in the fourth cycle, the rotor lamination connecting webs 5 are separated in a preferred semicircular increase, and rotor plate removed by cutting tool bottom, in the fifth cycle

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the Ständerblechverbindungsatege 6 are also arranged in a preferred semicircular recess, especially welding to the stator core, and passed through the component removal system for further work.

In Fig. 2, the cutting tool, esp. The third cutting stage for performing the method, explained.

During the cutting process of the above-mentioned stage, the ring punch 8 dips into the cutting plate 11 or into the cutting insert 12 simultaneously for the purpose of pre-cutting the Ständorbleohringkonturen with the rotor blade Achslochstempel 9. While the Läufererblechachsloch 4 is completely cut and removed by the lower tool part, ensure the Ringstempelnuten 14 that between metal strip 1, rotor and stator plate, connecting webs 5; 6 are preserved. The stripping of the precut stator sheet contour of cutting insert 12 assumes the spring-loaded ejector plate 13. The lattice separation stages 5, 6 are designed so that a sneezing process can take place only in the area of the inner and outer connecting webs. That is, the stamp-shaped bolts for pushing through the rotor or stator plates, outside the range of the connecting webs have a Maßdifferenz to Schneidplattdurchbruch, which is 1o to 2o times the cutting gap.

Claims (3)

- * - 236 3 52 Inventor pru ch 1 · Method for incomplete punching, stator and Läufererblechringkonturen when pole cutting of stator and Läufererblechen, characterized in that from the third power stroke, the Lochenerbleohachslochs (4) and Ständerblechinnendurchmesser and -aussendurchmesser (4a, 4b) pre-cut in the fourth cycle the Läufererblechverbindungsstege (5) are separated in a preferred semicircular elevation, in the fifth cycle the uprights plate connecting webs (6) are likewise arranged in a semicircular depression, especially for the stator core and weld on the respective circumference, approximately symmetrical 3 and / or multiple pitches. 2. Cutting tool for performing the method from the third cutting stage to point 1, daduroh characterized in that a five-fold follower tool is used, and during the cutting process of the above stage of the ring punch (8) for the pre-cutting of the stator sheet contours simultaneously with the Läufererblechachslochstempel (9) plunges into the insert (11) or · in the insert insert (12), while the rotor core hole (4) is completely cut out, the annular punch groove connecting webs (14) ensure that between the metal strip (1), rotor and stator sheet, connecting webs (5 »6) are retained, the stripping the vorgesohnittenen Ständerblechkonturen from the insert insert (12) on the spring-loaded ejector plate (13), the connecting links are , 236352 Separation stages (5,6) ao designed that a cutting process can take place only in the region of the inner and outer connecting webs (5,6). 3. Method and cutting tool for the inventive solution according to item 1 to 3, characterized in that a 2 or more-row arrangement for the method and cutting tool is used. "For this ..., fin» .. · Pages Drawings. "