JP3069567B2 - Method and apparatus for press-fitting a pre-assembled ball joint / patrone into a supporting eye of a steering knuckle arm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to claims 1 and 2
Pre-assembled ball joints of the type described in the preamble
The present invention relates to a method and an apparatus for press-fitting a patrone into a supporting eye of a steering knuckle arm.

[0002]

2. Description of the Related Art German Offenlegungsschrift 4445251 describes a device for fixing a ball joint / patrone to a steering knuckle arm of a motor vehicle. In this case, the knuckle arms are made from tough aluminum by thixocasting. In this case, the receiving opening of the steering knuckle arm for inserting the support housing of the ball joint / patrone, that is, the support eye, is not machined. The pre- assembled ball joint / patrone, as a unit, is the receiving opening of the steering knuckle arm, that is,
It is pressed into the supporting eye in the axial direction.

Further, as a general prior art, German Patent Publication No. 2008935, and German Patent Publication No. 2756
No. 228 and DE-A-211138.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to perform a press-fitting operation reliably, reasonably and easily.
The object of the invention is to create a method and a device of the kind mentioned at the outset for press-fitting a pre-assembled ball joint / patrone which, after a press-fitting operation, can achieve a frictionally optimal and play-free support of the support ball. In this case, the supporting eye of the steering knuckle arm must be able to be used in a raw material state without requiring prior processing.

[0005]

Means for Solving the Problems] This object is based on the present invention, respectively, is the equipment disclosed in claim operations disclosed features described partial steps and claim 2 of 1 thus solved.

With the method according to the invention and the device for this method, the pre-assembled ball joint / patrone can be accurately and simply pressed into the support housing of the steering knuckle arm. Thus, a higher degree of operating reliability and joint production quality is achieved during assembly.

The method can be advantageously applied for a knuckle arm with corresponding elasticity or toughness that allows press-fitting of the ball joint / patrone support housing. This is, for example , a knuckle arm made of aluminum or aluminum alloy, which may be in a raw state.

[0008] Advantageous embodiments will become apparent from the dependent claims and the operating examples described below with reference to the drawings.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The device shown in FIGS. 1 to 4 has a press table 1 on which a receiving device 2 is installed. In the receiving device 2,
Steering knuckle arm 3 is mounted. The outer contour of the support eye 4 of the steering knuckle arm 3 is adapted to the inner contour of the three-dimensionally curved receiving device 2.
A ball joint / patroller is attached to the raw support eye 4 of the steering knuckle arm 3, preferably made of aluminum material.
When press-fitting, the supporting housing 6 of the ball joint / patrone is connected to the supporting eye 4 of the steering knuckle arm 3.
Insert without pressure. The ball joint / patrone is configured as a pre-assembled unit, and the joint ball 7
And a bolt shaft 8 integrally connected to the joint ball 7
And a ball joint bolt 5 having the following. A support shell 9 for receiving the coupling ball is inserted into the support housing 6 without play or slidably in the axial direction.

For press-fitting the ball joint / patrone, a press-fitting device 10 having a press-fitting member 11 is used. In this case, the press-fitting member is connected to the base 12 of the press-fitting device 10 by screw connection. The base 12 may be, for example, a hydraulic press. An alignment sleeve 14 is coupled coaxially to the longitudinal axis of the press-fitting device 10 via a coil spring 13 as a spring device. The alignment sleeve 14 is guided in the axial direction by the press-fitting member 11. In this case, the axial stroke is limited by the guide pins 15 distributed on the peripheral surface, preferably by two pins which are diametrically opposed and project radially from the press-fitting member 11. The projecting portion of the guide pin 15 projects into the axial groove 16 of the alignment sleeve 14. The axial end of the axial groove 16 together with the guide pin 15 forms an abutment member (described in detail below) for limiting the stroke of the alignment sleeve 14.

Guide pin 1 guided in axial groove 16
5 also serves to prevent rotation of the alignment sleeve 14 at the same time.

[0012] central bore 17 of the press member 11, another of the aligning member in the form of tone Kokorokane 18 is provided. Aligning bell 18
Is also slidably connected to the press-fitting member 11 in the axial direction via a coil spring 19 as a spring device, and is guided coaxially with the longitudinal axis of the press-fitting device 10 by the wall of the bore 17. The bore 17 is configured as a threaded hole in the rear region of the bore opposite to the bell 18, into which an adjusting nut 20 for variably limiting the stroke and force for the bell 18 is screwed. The lock nut 21 serves to fix the adjustment nut 20.

Prior to the press-fitting operation, the alignment sleeve 14 abuts the pin 15 at the rear end 28 of the axial groove 16,
On the other hand, the centering bell 18 abuts on the inner protrusion 29 of the bore 17. Thus, an abutment is formed for the centering sleeve 14 and the centering bell 18 before the start of the press-fitting operation.

[0014] described to support eye 4 a function of a device for press-fitting the ball joint-patrol values for the following:

As shown in FIG. 1, the ball joint bolt 5 of the ball joint / patrone is supported by the supporting eye 4 such that only the conical bottom surface of the supporting eye 4 contacts the conical area of the end surface of the supporting shell 9.
After that, the press-fitting device 10 is lowered in the arrow direction A.
In this case, as is apparent from FIG. 2, first, the conical projection 22 on the end face of the centering sleeve 14 hits the free end 23 on the end face of the support eye 4. End face protrusion 22 and support eye 4
The free end 23 of the
Are adapted to each other, and thus by the lowering of the press-in device,
Alignment of the support eye 4 and the steering knuckle arm 3 is performed, with the spring device 13 generating an appropriate preload, and during the subsequent downward movement of the press device 10, the alignment sleeve 14 , Moved against the preload of the spring.

That is, when the press device 10 is further driven in the direction of the arrow A, the conical front edge 24 of the centering bell 18 is moved to the position shown in FIG.
As shown in FIG. 5 , the bolt abuts against the shoulder 25 of the bolt shaft 8, and the end portion of the bolt shaft 8 is aligned with the centering bell 1.
You will be guided into the 8th bore. The ball joint bolt 5 and the support shell 9 are pressed into the base of the support eye 4 in the direction of the longitudinal axis of the press-fitting device 10 by the cooperation of the edge 24 and the shoulder 25 which receive the preload from the spring 19 side. Now, since the supporting eye 4 and the ball joint bolt 5 are accurately aligned with each other and fixed together with the supporting shell 9, their positions no longer change at the next press-fitting operation, and this predetermined position does not change. Hold the target position.

[0017] is in as shown in FIG. 4, the press-fitting apparatus 10,
It is further lowered in the final step.
The annular front end 26 of the support housing 6
Abut. When the press-fitting device 10 is further lowered, the press-fitting member 11 press-fits the support housing 6 into the support eye 4. At this time, the annular protrusion of the support housing 6 comes into contact with the annular protrusion 30 of the support eye 4.

After the press-fitting operation is completed, the press-fitting device 10 is retracted, and the projection or end 23 of the support eye 4 is bent inward to fix the ball joint / patrone.

As described above, the ball joint / patrone is pressed into the supporting eye 4 of the steering knuckle arm 3 in a single stroke, but in a multi-stage operation. In this case, the inner diameter of the support eye 4 is smaller than the outer diameter of the support housing 6, supporting lifting eye 4 of the material strength support housing
Since the material strength is smaller than the material strength of No. 6 , the shape of the unsupported supporting eye is corrected during the press-fitting operation .

[Brief description of the drawings]

FIG. 1 shows the starting state of an apparatus for performing the method according to the invention.

FIG. 2 A press fitting device aligns a steering knuckle arm , and a ball joint
It is a view of the device of FIG. 1 in aligning state the cartridge.

FIG. 3 shows a state in which the press-fitting device aligns the ball joint / patrone.
2 is a drawing showing the apparatus of FIG.

Figure 4 is a view of the device of FIG. 1 in a state in which the press-fitting device is completely pressed the ball joint-patrone supporting eye.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press stand 2 Receiving device 3 Steering knuckle arm 4 Support eye 5 Ball joint bolt 6 Support housing7 Joint ball  8 Bolt shaft 10 Press-in device 11 Press-in member14 Aligning sleeve 18 Aligning bell (aligning member)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-332350 (JP, A) JP-A-8-61356 (JP, A) JP-A 5-329566 (JP, A) JP-A-1- 116313 (JP, A) JP-A-63-92812 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16C 11/06-11/08

Claims (6)

(57) [Claims] 1. A method of press-fitting a pre-assembled ball joint / patrone into a support eye of a steering knuckle arm, wherein the ball joint / patrone is press-fitted into a support shell surrounding the ball joint and a support shell surrounding the support shell. In the form of a supporting housing, comprising: 1.1 mounting a steering knuckle arm (3) having a supporting eye (4) on a receiving device (2) on a press table; 1.2 First, only the conical area on the end face side of the support shell is inserted into the corresponding conical opposing part of the support eye,
Inserting the ball joint / patrone support housing (6) into the support eye (4) such that the ball joint / patrone support housing still has play in the axial direction within the support eye; 1.3. ) Is aligned coaxially with respect to the press-fitting device (10) and is arranged perpendicular to the axis with respect to the press-fitting device ; 4 The free end of the shaft (8) of the ball joint bolt (5) is coaxially aligned with the press-fitting device (10), and the support shell is axially fixed in the support eye via the ball joint bolt (5). to be a step of preload in the axial direction a bolt shaft (8) to the press-fitting direction, 1. 5 presses the support housing (6) press-fitting member (11) of the press device (10), wherein the comprising the step of press-fitting the support housing to the support eye (4). 2. The apparatus according to claim 1, further comprising a press-in device including a press-in member and a press table, wherein the press-in device (10) is rigidly connected to the press-in device (10). 11) wherein said press-fitting member is placed on a receiving device (2) slidable in the axial direction with respect to the press-fitting member (11) against the force of a spring and mounted on a press table (1). An aligning sleeve (14) capable of pressing the outer edge of the support eye (4) of the steered knuckle arm (3) in an aligned state;
An aligning member (18) which can also slide axially against the press-fitting member (11) against the force of the spring and can be placed on the shoulder (25) of the shaft (8) of the ball joint bolt (5).
The press-fitting member (11) can be pressed against the ball-joint / patrone support housing (6) for press-fitting. 3. During the press-fitting operation, first, the alignment sleeve (1) is used.
4) is in the centering position, then the centering member (18) is in the centering position, and finally the centering sleeve (14) and the centering so that the press-in member (11) reaches the operating position. member (18), respectively, the stopper member (15, 2 8,2
3. The device according to claim 2, comprising: (9). 4. The device according to claim 3, wherein the stop member of the centering sleeve is further configured as a guide pin forming an anti-rotation member. 5. The alignment member (18) is formed in a bell shape,
5. The device according to claim 3, wherein the ball acts on a shoulder provided on the shaft of the ball joint bolt.
Equipment. 6. A preload spring (19) for preloading the bell-shaped centering member (18) in the axial direction can be axially adjusted by an adjusting member (20). 6. The device of claim 3, 4 or 5, wherein