DE202017101270U1 - Device for rotary alignment of shafts - Google Patents

Abstract

Device for rotational position alignment of a shaft, wherein the device has a fixing element (1) for positional alignment of the shaft (2), characterized in that - the fixing element (1) has a centering element (1.1) arranged coaxially along an axis A, wherein the centering element ( 1.1) with a centering (2.1) of the shaft (2) is engageable and that the fixing element (1) has at least one contour element (1.3), which with at least one mold element (2.3) of the shaft (2) can be brought into engagement and / or that the shaft (2) has at least one contour element (1.3) which can be brought into engagement with at least one shaped element (2.3) of the fixing element (1) and that the contour element (1.3) has a contour flank (1.4), which can apply with reproducible accuracy to at least one edge (2.4) of the at least one element element (2.3) of the shaft (2) and / or the fixing element (1) and that by means of the contour edge (1.4) by a little at least one clamping element (1.5) generated contact force on the at least one molding element edge (2.4) by means of at least one clamping element (1.5) of the shaft (2) and / or the fixing element (1) is transferable.

Description

The invention relates to a device for Drehlageausrichtung of waves and finds in particular for the rotational position alignment of camshafts application.

From the publication DE 10 2009 060 347 A1 is a mounting device for mounting a functional element bearing shaft known. The device comprises a plurality of axially spaced-apart position discs, by means of which the functional elements are mounted on the shaft. This requires an exact alignment of the shaft in the device. For the alignment, a centering mandrel is used, which is movable by relative axial displacements to the position discs. The end face of the centering mandrel has four clamping means, by means of which an empty shaft in the axial continuation of the centering mandrel can be clamped thereto. The four clamping means have at least one eccentrically and / or non-rotationally symmetrical projection, which is divided by at least one radial gap in two partial projections, wherein at least one partial projection has a solid-state joint by means of which the head piece of the partial projection is resiliently mounted, wherein the projection with a corresponding Recess in the front side of the empty shaft is engaged. The centering therefore takes place on the principle of a Fixierelementverzahnung.

The deviation of ideal dimensions of these recesses thus have a direct influence on the radial displacement of the shaft, resulting in very fine manufacturing tolerances and thus increased manufacturing costs.

From the publication EP 2 237 922 B1 is a device for mounting of a composite, consisting of at least one functional element bearing shaft and this in undivided bearings supporting housing described. The shafts are preferably in the form of mass balance shafts or camshafts.

The device has positioning devices that hold the functional elements in a predetermined phase position in the housing prior to joining in such a way that the at least one shaft can be inserted through the bearings of the housing and openings in the functional elements. The positioning device is provided with recesses for the functional elements which have a stop which supports the functional element counter to the joining direction of the shaft, the positioning device furthermore having a partial contour of the contour of the functional element as a negative profile.

The camshaft is positioned by means of a centering mandrel, wherein the centering mandrel has a diameter smaller than or equal to the shaft. A reproducible orientation in the radial position and angular position is very difficult to produce.

The object of the invention is to develop a device for Drehlageausrichtung of waves, in particular camshafts, which has a simple structural design, the waves are oriented in the assembly and the measurement of the valve train modules reproducible exactly in the radial position and the angular position about the axis of symmetry can.

This object is achieved with the characterizing features of the first protection claim.

Advantageous embodiments emerge from the subclaims.

The invention relates to a device for Drehlageausrichtung a shaft, wherein the device comprises a fixing element for positional alignment of the shaft, which extends coaxially along an axis A and at least one concentrically arranged centering element, which is engageable with a centering of the shaft. The fixing element has at least one contour element, which can be brought into engagement with at least one shaping element of the shaft. In an alternative embodiment, the shaft has at least one contour element which can be brought into engagement with at least one shaped element of the fixing element.

The contour element has a contour flank, which can rest with reproducible accuracy on at least one flank of a feature element of the shaft and / or the fixing element whereby by means of the contour flank a contact force generated by at least one clamping element on at least one molding element edge by means of at least one clamping element of the shaft and / or the fixing element is transferable.

The clamping element is advantageously formed resiliently as part of the contour element. However, a training as a separate element on the fixing and / or on the shaft is conceivable.

In an advantageous embodiment, the clamping element has a solid-state joint, which is designed to be self-adjusting.

The contour element of the fixing element and / or the shaft and the form element of the shaft and / or the fixing element are preferably arranged eccentrically in the region of the end face of the fixing element and / or the shaft. This is preferred Contour element integrated into the outer wall of the fixing and / or the shaft, wherein a spacing of the contour element of the outer wall is possible.

The alignment of the shaft to the fixing element by means of the centering element which cooperates with a corresponding centering of the shaft. The centering element has a centering contour, which is preferably in the form of an outer cone or spherical. There are also inner contours such. Internal cone conceivable.

The device assigns a separate machining contour to each subtask of the orientation request. By this separation, it is possible to use the existing and very accurate centering to realize the radial positioning of the shaft with high accuracy. It is thus possible to produce the reproducible radial angular position in sufficient quality with the aid of the "coarse" toleranced element of the shaft and / or the fixing element, whereby production costs and costs are reduced.

The invention will be explained in more detail below using an exemplary embodiment and associated drawings.

• 1 ein erfindungsgemäßes Fixierelement der Vorrichtung,
• 2 eine Welle mit erfindungsgemäßem Formelement,
• 3 auseinander liegende Welle und Fixierelement,
• 4 zusammengefahrene Welle-Fixierelement Verbindung,
• 5 auseinander liegende Welle und Fixierelement in Verbindung mit zweiter Zentrierung,
• 6 zusammengefahrene Welle mit Fixierelement und zweiter Zentrierung in Spannsituation.

Show it:

• 1 an inventive fixing element of the device,
• 2 a shaft with a shaped element according to the invention,
• 3 shaft and fixing element lying apart,
• 4 coiled shaft-fixing element connection,
• 5 apart shaft and fixing element in conjunction with second centering,
• 6 Jointed shaft with fixing element and second centering in clamping situation.

1 shows a device according to the invention in the form of a fixing element 1 for rotational registration of shafts, comprising one coaxial along an axis A lying centering element 1.1 ,

The fixing element 1 has an eccentrically arranged contour element 1.2 on, which starting from the front side along the axis A extends.

The contour element 1.2 has a contour edge 1.3 and a clamping element 1.4 on, with the contour edge 1.3 can apply with reproducible accuracy to at least one edge of a feature element of the shaft. By means of the contour flank 1.4 is one by at least one clamping element 1.4 generated contact force on a molding edge of the shaft transferable.

The tensioning element 1.4 is formed automatically adjusting in the form of a coil spring.

In the embodiment shown, the centering element 1.1 formed in the form of a conical tip which is the end face of the fixing 1 surmounted. There are also other forms of centering 1.1 conceivable, such as a partial area of a sphere.

The fixing element 1 can be formed both one-piece and multi-part.

A wave 2 with a centering 2.1 is in 2 shown. The wave 2 points to its front side 2.2 a form element 2.3 on which to the contour element 1.2 is arranged correspondingly.

The form element 2.3 is formed in the form of a groove and has a form element edge 2.4, which receives the transferable contact force of the clamping element 1.5 of the fixing element. According to 3 and 4 are the contour element 1.3 and the form element 2.3 in the direction of rotation of the contour element 1.3 of the fixing element 1 coaxial along the axis A aligned.

The wave 2 is by means of the centering element 1.1 which is in the centering 2.1 the wave 2 engages, on the fixing 1 aligned and collapsed in the aligned position. The contour element engages 1.3 of the fixing element 1 in the corresponding form element 2.3 the wave 2 and is about the automatically adjusting clamping element 1.5 of the contour element 1.3 Fixed by applying the contact force. The contour flank will become 1.4 with the molding edge 2.4 brought into operative connection, whereby a rotational position alignment of the shaft 2 he follows.

5 and 6 show the clamping situation of the device for Drehlageausrichtung of waves 2 , where the wave 2 on the right side by means of a fixing element according to the invention 1 and on the left side by means of a second centering 3 is fixed. According to 3 becomes the wave 2 in collapsed state on both sides, on the one hand by the fixing element 1 and on the other hand from the centering 3 , aligned and fixed. Each subtask of the orientation request is assigned a separate machining contour. By means of centering 3 and the centering element 1.1 it is possible through this separation, the existing centering 2.1 the wave 2 for the radial positioning of the shaft 2 to use.

LIST OF REFERENCE NUMBERS

1

fixing

1.1

centering

1.2

contour element

1.3

contour edge

1.4

clamping element

2

wave

2.1

centering

2.2

front

2.3

forming element

2.4

Shaped element edge

3

centering

A

axis

QUOTES INCLUDE IN THE DESCRIPTION

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.

Cited patent literature

• DE 102009060347 A1 [0002]
• EP 2237922 B1 [0004]

Claims (3)

Device for rotational position alignment of a shaft, wherein the device has a fixing element (1) for positional alignment of the shaft (2), characterized in that - the fixing element (1) has a centering element (1.1) arranged coaxially along an axis A, wherein the centering element ( 1.1) with a centering (2.1) of the shaft (2) is engageable and - that the fixing element (1) has at least one contour element (1.3), which with at least one form element (2.3) of the shaft (2) can be brought into engagement and / or - that the shaft (2) has at least one contour element (1.3) which can be brought into engagement with at least one shaped element (2.3) of the fixing element (1) and - that the contour element (1.3) has a contour flank (1.4), which can apply with reproducible accuracy to at least one flank (2.4) of the at least one element element (2.3) of the shaft (2) and / or of the fixing element (1) and - by means of the contour flank (1.4) at least one clamping element (1.5) generated contact force on the at least one molding element edge (2.4) by means of at least one clamping element (1.5) of the shaft (2) and / or the fixing element (1) is transferable. Device after Claim 1 , characterized in that the clamping element (1.5) on the fixing element (1) and / or on the shaft (2) is formed. Device according to claims 1 and 2, characterized in that the contour element (1.3) of the fixing element (1) and / or the shaft (2) and the shaped element (2.3) of the shaft (2) and / or the fixing element (1) eccentrically in the region of the end faces (1.1, 2.1) of the fixing element (1) and / or the shaft (2) are arranged.

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