DE102004031777A1 - Mechanism for connecting machinery parts has flange with two ring segments which connect the parts and has bearing surface at the exterior and interior of parts whereby bearing surfaces are cone-like - Google Patents

Abstract

The mechanism has a flange (1) consisting of two ring segments, which connect machinery parts, and has bearing surface (6,7) at the exterior and interior of the parts. The bearing surfaces are cone-like and the angle (A) of the bearing surfaces lies between 30[deg] and 60[deg], preferably 45[deg].

Description

The The invention relates to a ring of at least two ring segments for positive locking Connecting two machine components for power transmission in one direction with at least one contact surface each for an outside and an inner machine component.

Similar solutions are known in the art, these being smaller Diameter with smaller forces Respectively. It is here at shaft securing rings and snap rings thought. Shaft securing rings are usually sharp and have a rectangular cross section. Even such simple Split rings have a high edge pressure and have an increased bending stress on. It is therefore known to have stepped split rings with rectangular L-shaped cross-section use to reduce the bending stress. Both ring forms to lead However, to voltage peaks in the groove bottom of the shaft, whereby the load capacity the wave is reduced.

Snap rings are common only with relatively small cross-sections, as they are bent up during assembly Need to become. Accordingly, they are also suitable only for smaller transmission forces.

task the present invention is to provide a connection between a round pole like a pillar, Drawbar or piston rod with a body arranged on it to create a platen or a piston, wherein the Space-saving connection, cost-effective and high forces in one direction to be receptive.

The solution this object is in connection with the preamble of the claim 1, characterized in that the contact surfaces are designed conical.

It So it is desirable, the diameter of the inner part as possible to keep it low and thus to make the ring so that in the notch base a relatively small increase in stress due to the notch effect can arise. This is achieved by a radius in the groove bottom and an opening angle for example, 45 ° between groove bottom and contact surface the column is created. Consequently, it is therefore provided that the angle of the contact surfaces to the central axis between 30 ° and 60 °, where preferably just 45 ° can be selected. In a section through these conical contact surfaces are the resulting generatrix straight or slightly curved. In order to the ring is easy to produce, it has at least one cylindrical surface for receiving on.

Around transmit relatively high forces to be able to provided that the inner and the outer machine component to be joined Has contact surfaces, the to the cone-like contact surfaces of the ring correspond. This will be a game between the Prevents components and per se tipping or bending moment prevented. So that these bending moments are largely excluded is provided that the mid-perpendicular of the generatrices, or at minor bulge the generatrices the vertical lines in the apex of the mantle lines, the contact surfaces of the inner and outer Connecting machine components lie on a line. The transferring Force component is thus on the same line of action as the resulting drag. The mid-perpendiculars are not up a line of action would be the system is not in balance and a bending moment would arise.

Further education are the conical contact surfaces of the inner and outer machine components same size. This ensures that the surface pressure of the two contact surfaces as far as possible is identical. This embodiment is particularly suitable when connecting parts with the same or largely the same material strengths. Should parts be connected where different material strengths are present, is proposed according to the invention, the conical contact surfaces of the inner and outer machine component different in size, because with larger contact surface of the Part with lower material strength, the load is distributed more and the surface pressure reduced part of the material with low material strength.

Around one possible low notch effect is suggested that the generatrix at a section through the cone-like contact surfaces at least at one end goes into a radius.

With the proposed solution a split ring for connecting two machine components will be a cost effective Connection proposed with the relatively high forces in one Direction be transferred can, without a complex connection element must be created.

In The following drawings schematically illustrate the invention an embodiment explained. It shows:

1 the state of the art,

2 an assembly drawing of He contraption,

3 the ring in detail, and

4 a cut through the ring

In 1 the prior art is shown, wherein the one part is a stepped split ring with L-shaped Schittfläche, the other part of a simple split ring or shaft securing ring (rectangular Schittfläche) and the third part of the execution with a snap ring (round section).

2 shows the invention in an assembly view, wherein a piston rod as an inner machine component 5 with a piston as an external machine component 4 is pictured. The piston rod 5 has a touchpad 12 that with the contact surface 6 of the ring 1 corresponds. The power transmission to the piston rod 5 acting tensile force F on the piston 4 takes place from the contact surface 12 , over the contact surface 6 such as 7 of the ring 1 on the touchpad 13 of the piston 4 , The piston rod 5 , the split ring 1 and the piston 4 are by means of clamping ring 18 and braced screws together. Thus, a force can be transmitted in the opposite direction, which is much smaller in most applications. It is therefore cost effective when designing clamping ring 18 and screws are made according to this smaller force.

A detailed representation of the ring is from the 4 refer to.

The 3 shows the ring in detail, clearly showing the two ring segments 2 and 3 can be seen. Each of the ring segments 2 and 3 has a contact surface 7 leading to the outer machine component 4 corresponds. In the sectional view of this ring, as in 4 to see, indicates the inner bearing surface 6 a generatrix 14 on. The same applies to the outer contact surface 7 that have a generatrix 15 shows. The two generators 14 and 15 are straight lines in this sectional view. But you could also have a slight curvature or crowning. Each of these generators 14 and 15 has a perpendicular bisector 10 and 11 , According to the invention, both sheath perpendiculars lie on a common line. This ensures that each transmitted to the contact surface force component has a corresponding line of action corresponding counterforce and thus a tilting moment, or as here bending moment is avoided. Are the generators 14 and 15 as curved lines, so executed in the sectional view as a bow, it is necessary so that the forces live up to each other in a similar manner and no bending moments arise that the respectively determined perpendicular at the apex of the arc of both generatrices on the same line of action, ie line, lies ,

From the 4 can also be seen that the generatrix 14 or 15 each in a radius 16 respectively. 17 goes over to reduce the notch stress. Furthermore, in 4 to clarify the angle α specified, the angle to the contact surface 6 Are defined.

1

ring

2

first ring segment

3

Secondly ring segment

4

outer machine component

5

inner machine part

6

inner contact surface of 1

7

outer contact surface of 1

8th

Generatrix of 12

9

Generatrix of 13

10

Perpendicular bisector 14

11

Perpendicular bisector 15

12

Touchpad of 5

13

Touchpad of 4

14

Generatrix of 6

15

Generatrix of 7

16

Radius to 14

17

Radius to 15

18

clamping ring

α

angle

Claims (8)

Device made of a ring ( 1 ), consisting of at least two ring segments ( 2 . 3 ) for the positive connection of two machine components ( 4 . 5 ) for transmitting power in one direction with at least one contact surface each ( 6 . 7 ) for an external ( 4 ) and an inner ( 5 ) Machine component, characterized in that the contact surfaces ( 6 . 7 ) are cone-like. Apparatus according to claim 1, characterized in that the angle (α) of the contact surfaces ( 6 . 7 ) is between 30 ° and 60 °, preferably 45 °. Device according to claim 1 or 2, characterized in that the generatrices ( 14 . 15 ) in a section through the cone-like contact surfaces ( 6 . 7 ) are curved straight or only slightly. Device according to claim 3, characterized in that the inner ( 5 ) and the outer ( 6 ) to be connected machine component contact surfaces ( 12 . 13 ) facing the contact surfaces ( 6 . 7 ) correspond. Apparatus according to claim 4, characterized ge indicates that the bisectors ( 10 . 11 ) of the generatrix lines ( 8th . 9 ) or with slight curvature of the generatrices ( 8th . 9 ) the vertical at the apex of the generatrix ( 8th . 9 ) of the contact surfaces ( 12 . 13 ) of the inner ( 5 ) and the outer ( 6 ) to be connected machine components lie on a line. Apparatus according to claim 5, characterized in that the conical contact surfaces ( 12 . 13 ) of the inner ( 5 ) and outer ( 13 ) Machine components are the same size. Apparatus according to claim 5, characterized in that the conical contact surfaces ( 12 . 13 ) of the inner ( 5 ) and outer ( 13 ) Machine components are different sizes. Device according to at least one of claims 1 to 3, characterized in that the generatrices ( 14 . 15 ) in a section through the cone-like contact surfaces ( 6 . 7 ) at least at one end into a radius ( 16 . 17 ) pass over.