Log In. Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action. Click Here to join Eng-Tips and talk with other members! Already a Member? Join your peers on the Internet's largest technical engineering professional community.
|Published (Last):||25 February 2018|
|PDF File Size:||17.8 Mb|
|ePub File Size:||5.54 Mb|
|Price:||Free* [*Free Regsitration Required]|
Disclosed is a plug-in toothed shaft connection with an inner part, which has an external toothing, and with an outer part, which has an internal toothing, wherein preferably the inner part and the outer part are substantially circular cylindrical and concentric with each other. In this case, an undercut is provided in each case in a transition region to an adjacent tooth flank tooth reasons of the external toothing or tooth reasons of the internal toothing. Disclosed is still a method for producing a plug-in splined shaft connection between an inner part and an outer part with the step "finishing of undercuts at transition areas between a tooth base and a tooth edge adjacent thereto".
The invention relates to a pluggable toothed shaft connection according to the preamble of patent claim 1 and a method for producing a toothed shaft connection according to patent claim 7. Splined shaft connections are used for torque transmission between two coaxial rotating components.
For this purpose, a positive connection between the two parts is provided. An outer part has a circumferential internal toothing, while an inner part has a corresponding circumferential outer toothing. For the design of the gears there are various standards, such.
ISO JIS D In order to reduce the notch effect in the transitions between tooth roots and tooth roots, by which the toothed shaft connection can be weakened, is optionally shown a uniform rounding of the tooth base of an inner part of the splined shaft connection. By this rounding, two adjacent tooth flanks merge into one another with a uniform arc with minimal notch effect.
A disadvantage of this rounding is that the tooth is longer, so that the lever arm on the tooth root and thus the bending moment is increased. Furthermore, it is disadvantageous that the moment of resistance of the affected part and thus the torque transmittable by it are reduced by the material removal with otherwise unchanged dimensioning of the toothed shaft connection.
In contrast, the invention is based on the object to provide a pluggable splined connection, the transmittable torque is increased. This object is achieved by a pluggable toothed shaft connection with the features of patent claim 1 or by a method for producing a pluggable toothed shaft connection according to patent claim 7.
The plug-in toothed shaft connection according to the invention has an inner part, which has an outer toothing, and an outer part, which has an internal toothing, wherein preferably the inner part and the outer part are substantially circular cylindrical and concentric with one another. As a result, the notch effect is reduced in the transition between the tooth base and the adjacent tooth flank, at the same time the moment of resistance of the affected part is only minimally reduced.
This is - at a predetermined diameter of the spline connection - transmissible torque increases. In a particularly preferred embodiment, each undercut is infinitely or in cross-section considered kink-free and steadily in the adjacent tooth flank. In another particularly preferred embodiment, each undercut also extends into the adjacent tooth flank and thus forms a protuberance contour with an undercut. Also mixed forms are conceivable, which have a low stress of a broach to the goal. In a preferred embodiment, the internal toothing is an involute toothing.
Even if only a part is executed accordingly, interchangeability is given. The method according to the invention for producing a pluggable splined shaft connection with an inner part and with an outer part includes the step "manufacturing of undercuts at transition areas between a tooth base and a tooth flank adjacent thereto".
In this case, the production of the undercuts may preferably be carried out with a broach, which has a plurality of segments with a comparatively small radius and a plurality of segments with a comparatively large radius. Before making the undercuts, the segments of comparatively small radius are used, and in making the undercuts, the segments of comparatively large radius are used. Or the undercuts are made with two different impact tools, which are used one after the other.
Further advantageous embodiments of the invention are described in the dependent claims. In the following, various embodiments of the invention will be described in detail with reference to FIGS. Show it:. It has a cylindrical shaft as the inner part 1 and as the outer part of a hollow cylindrical hub 2 , The hub 2 includes the wave 1 concentric.
From the wave 1 and the hub 2 a section is shown in cross-section. The wave 1 has on its outer circumference a uniform circumferential involute, from the in 1 only one tooth 4 is shown. The tooth 4 has a tooth base 6 and two convex tooth flanks 8th ,. The hub 2 has recesses with concave tooth flanks 10 and a tooth base 12 , The shape of each recess This is a positive connection between the teeth 4 formed external toothing of the shaft 1 on the one hand and the recesses About this form-locking rotate the shaft 1 and the hub 2 when they are intertwined, together.
According to the invention, a holistic optimum is created in this respect, in which at each transition between the tooth base 12 and the tooth flank 10 an underdog 16 is provided, on the one hand, the notch effect between the tooth flank 10 and the tooth base 12 is reduced, and on the other hand, the material thickness between the tooth root 12 and the outer jacket 14 the hub 2 only minimally reduced.
In 1 are just two of the circumference of the hub 2 distributed undercuts 16 shown. They run perpendicular to the drawing plane. The underdogs 16 are formed trough-shaped and extend on the one hand radially from the tooth base 12 towards the outer coat 14 in 1 to the top right and on the other hand tangential to the base of the tooth 12 in the tooth flank 10 into in 1 to the top left.
By the latter extension thus an undercut is formed. The internal toothing of the hub 2 according to the first embodiment thus forms a protuberance contour. Accordingly, a tool must have the recesses The internal shaft 1 with its external teeth 4. The undercuts according to the invention, of which in 2 just an underdog is shown are compared to the first embodiment modified and produced with technically reduced effort.
The underdog is formed trough-shaped and extends only in the radial direction of the tooth base 12 towards the outer coat 14 the hub , A transition between the underdog and the neighboring flank 10 is infinitely variable, with the flank 10 at the transition tangential to the curved bottom of the undercut extends.
The underdogs 16 of the first embodiment according to 1 and the underdogs of the second embodiment according to 2 Both reduce the respective notch effect between the tooth base 12 and the adjacent tooth flank 10 , where they are critical for the entire spline connection material thickness of the tooth base 12 to the outer jacket 14 reduce only minimally.
Thus, according to the invention, a holistic optimum is created which leads to a maximized transmissible torque of the toothed-shaft connection according to the invention.
This is an underdog provided, whose cross-sectional shape, so to speak "between" that of the undercut 16 according to 1 and the one of the underdog according to 2 lies. The underdog has an approximately semicircular cross-section and extends adjacent to the tooth flank 10 exactly radially outward. Thus arises in a transition between the tooth flank 10 and the underdog a step or viewed in cross section a kink. Nevertheless, the underdog extends not in the tooth flank 10 into it, so that no undercut cf.
Disclosed is still a method for producing a plug-in splined shaft connection between an inner part and an outer part with the step "finishing of undercuts at transition areas between a tooth base and an adjacent tooth flank". This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application.
The DPMA assumes no liability for any errors or omissions. Plug-in splined shaft connection with an inner part 1 , which has an outer toothing 4. Spline connection according to claim 1, wherein each undercut continuously and steadily into the adjacent tooth flank 10 passes over.
Spline connection according to claim 1, wherein each undercut 16 ; in the adjacent tooth flank 10 and forms a protuberance contour. Toothed shaft connection according to claim 1, wherein the external toothing an involute toothing 4. Toothed shaft connection according to claim 1, which substantially corresponds to DIN Method for producing a plug-in toothed shaft connection between an externally toothed inner part 1 and an internally toothed outer part 2 with the step "Manufacture of undercuts 16 ; ; at transition areas between a tooth base 12 and a tooth flank adjacent thereto 8th.
The method of claim 7, wherein the manufacturing of the undercuts 16 ; ; is carried out with a broach, which has a plurality of segments of comparatively small radius and a plurality of segments of comparatively large radius, wherein first the segments are used with a comparatively small radius, and wherein in the manufacture of the undercuts 16 ; ; the segments are used with a comparatively large radius.
The method of claim 7, wherein the manufacturing of the undercuts 16 ; ; with two different impact tools, which are used successively. Plug-in toothed shaft connection for torque transmission between coaxial rotary components, has shaft provided with external teeth, and undercut provided at root surfaces of external or internal teeth in transition region to flanks.
DEA1 en. ANSI JPB2 en. EPB1 en. USA1 en. KRA en. DEC2 en. Friction ring, synchronisation ring, synchronisation unit and a variable speed gearbox for a motor vehicle. USB2 en. KRB1 en. USA en. Method and device for eliminating a secondary burr on a front-toothed workpiece wheel. CNU en. JPA en. Assembly for making hydrocarbon well drilling and working thread joints and their thread joints. Component with inner and outer teeth and method for manufacturing the component.
RUC2 en. Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee.
Re: JIS involute spline
Automatic brake adjuster AA1