DE3811646A1 - Flexible shaft coupling - Google Patents

Abstract

The flexible shaft (clamp, split) coupling described can be used with advantage both in new applications and for retrofitting or conversion as a torsionally rigid flexible connecting element when lateral mounting space is available. The coupling can be matched with relatively few problems to already existing centre distances. In the case of long production runs, the use of a casting, possibly requiring subsequent finish machining, may be advisable due to its low production costs. The coupling shells are preferably machined so as to be symmetrical, allowing their use at high speeds even without corresponding involved balancing. Axial displacement of the shafts to be connected is not necessary.

Description

The invention describes a shell coupling in the through slots in the half shells transverse to the longitudinal axis Leaf springs or spring bars are formed by the spring action shaft offsets in axial, lateral and angular direction wear-free. These Type couplings would be z. B. can be used advantageously if the shafts to be connected for coupling assembly cannot be moved axially.  

description

The invention describes a flexible shell coupling for installation in drive trains. The balancing behavior the clutch is created by the interaction of the Spring bars enabled. The length is variable and can adjusted according to the respective center distance will.

Flexible shell coupling

The invention relates to the technical field of Shell couplings with the possibility of shaft misalignments in the specified limits according to the preamble of Claims 1 and 2.

Shell couplings of known type according to DIN 115 exist from two rigid shells that have no wave offsets can record and thus as rigid Links must be designated. The shell coupling of the flexible design takes through a number of overlapping at longitudinal spacing arranged slots shaft offsets in axial, lateral and angular direction.  

Due to the overlapping slits, relatively thin ones remain Material sections (spring bars) to form a Spring action stand, causing the clutch body in terms of balancing an axial, lateral or angular misalignment between one Pair of attached at opposite end parts Can bend waves. Couplings through cuts achieve a compensatory effect, z. Tie U.S. Patents 15 57 958, 30 17 941 and 33 90 546 can be seen. There is also a flexible number 24 33 282 Coupling link described where by cutting Spring properties can be achieved.

The disadvantage of the aforementioned couplings is that for assembly or disassembly connecting shafts must be moved axially. The Disadvantage of the known cup coupling according to DIN 115 is that it has no flexible properties and thus when assembling non-aligned shafts Bearing damage becomes unavoidable.

The invention is therefore based on the object To avoid disadvantages and a cheap way easy-to-install compensating coupling is achieved, which has the ability to shift axially, lateral and angular direction.  

This object is achieved in that the coupling shells are flexibly designed with slots to a spring behavior with a compensating function allow but with the torque transmission a sufficiently high torsional stiffness is guaranteed.

The advantages achieved with the invention exist especially in that the incisions on the Form coupling shells spring bar or leaf springs, which work together with the clutch installed Shaft misalignments within defined limits without wear record, tape. An axial displacement of the to be connected With this flexible coupling, waves are for one Installation not necessary. The flexible Coupling shells can be required for series accordingly inexpensively manufactured as a casting will.

The exemplary embodiments in the drawings show

Figure 1 the coupling shell according to the invention with clamping hubs. The incisions ( 2 ) and roundings ( 3 ) with the spring bars ( 4 )

Figure 2 shows the coupling shell as a side view of Figure 1 in a sectional view with a fit ( 4 ) and free space ( 5 ), as well as a variable center distance ( 6 )

Figure 3 a coupling shell with notches ( 2 ) and rounded notches ( 3 ), as well as the spring bars ( 1 )

Figure 4 shows a coupling shell as a side view of Figure 3 with a fit ( 4 ) and free space ( 5 ), as well as variable center distance ( 6 )

On the already installed input and output shaft, the coupling shell with the fit seats ( 4 ) is placed on the shafts to be connected and, with the associated coupling shell, a play-free transmission is made possible by a non-positive clamping connection. The existing shaft misalignment is absorbed without wear due to the mobility of the spring bars ( 1 ). The mobility of the spring bars therefore causes a shaft misalignment to be carried out, the bearings not being overstressed by the spring action of the bars, ie bearing damage can be ruled out even with existing shaft misalignments if the coupling is designed accordingly.

Claims (7)

1. Flexible shell coupling, characterized in that by arranged cuts transversely to the longitudinal axis, or obliquely to the longitudinal axis form spring bars (leaf springs) that give this split connector the ability to accommodate shaft offsets in the axial, lateral and angular direction, depending on the design of the Spring bars through the incision depth or the number of incisions the technical values z. B. the torsional stiffness, the lateral or axial spring stiffness, and the maximum permissible shaft misalignments can be changed, but that the cut ends are to be designed rounded to avoid the notch effect at the highly stressed bending point. 2. Flexible cup coupling according to claim 1, characterized characterized that two rigid coupling half shells produced by cuts resilient connecting links be that of the originally rigid cup coupling brings a limited flexibility, preferably overlapping slots or grooves transverse to the longitudinal axis are located.   3. Flexible cup coupling according to claim 1 and, or 2, characterized in that the coupling half-shells according to the respective application, both from Plastic, as well as steel, or one non-ferrous metallic alloy, one durable spring property due to the overlap resulting spring bars should be taken into account. 4. Flexible shell coupling after one or more of the preceding claims, characterized in that these half shells, both as a cast part, and in exciting procedures in whole or in part be made so that the most favorable Manufacturing process is to be chosen, the The ends of incisions are to be rounded off by Avoid or reduce the notch effect. 5. Flexible cup coupling according to claims 1 to 4, characterized in that the clutch as such consists of two flexible half shells that are preferably to be processed symmetrically, so that the Field of application of these couplings without a separate one Balancing is also possible at high speeds.   6. Flexible shell coupling after one or more of the preceding claims, characterized in that the inside diameter in the area of the spring bars is always worked out larger than the maximum permissible bore, so that even shafts with different diameters are almost together can and still the function of Compensatory behavior is ensured. 7. Flexible shell coupling after one or more of the preceding claims, characterized in that a feather key groove in the hub also worked out can be the u. U. as a reference position, or as additional security against rotation could be used that but also the possibility is given on Hub outer diameter of the coupling grooves or Drill holes so that after mounting the coupling a manual rotation of the spindle with a Hook wrench or a simple pen can be.