KR20060033507A - Apparatus for assembling needle bearing of the universal joint - Google Patents

Abstract

The present invention relates to a needle bearing assembly of the universal joint, the servo motor 10, the first connection block 20 and the front end of the first connection block 20, which is axially connected to one side of the servo motor (10) The second connection block 30 is installed at a predetermined distance apart from the front end of the second connection block 30, the predetermined distance is fixed to the base plate 41, the cylinder block 40 to form a cylindrical space therein And a first slider 50 which is screw-fastened to the second connection block 30 and a part of the outer circumferential surface thereof, is axially positioned inside the cylinder block 40, and is slidably installed along the inside thereof. It is installed in one end of the slider 50, the pressing tool 52 for pressing the needle bearing 3 into the pressing portion of the yoke 1, and is installed in the inner space of the first slider 50, one end is connected to the first A second slider 60 fixed to one end of the block 20 and slidably moved in the axial direction, and a second It includes a punch tool 62 connected to one end of the slider 60 to stack the needle bearing 3 press-fitted into the press-in tool 52 in the forward movement. Therefore, not only the needle bearing can be automatically supplied to the indentation portion of the yoke, but also the indentation process and the stacking process of the needle bearing can be simultaneously performed in a single facility, thereby simplifying the facility and improving productivity.

Description

Needle bearing assembly device of universal joint {APPARATUS FOR ASSEMBLING NEEDLE BEARING OF THE UNIVERSAL JOINT}

1 shows a general universal joint,

Figure 2 is a front view showing a needle bearing assembly of the universal joint according to the present invention,

Figure 3 is a front sectional view showing a needle bearing assembly of the universal joint according to the present invention,

Figure 4 is a side view showing a needle bearing assembly of the universal joint according to the present invention,

Figure 5 is a front sectional view showing an operating state of the needle bearing assembly of the universal joint according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: servo motor 20: first connection block

22: bolt shaft 24: first adjusting portion

30: second connection block 32: bearing metal

34: second adjusting unit 40: cylinder block

50: first slider 52: indentation tool                 

54: load cell 60: second slider

62: Punch Tool 64: Collet

66: spring

The present invention relates to a needle bearing assembling device of a universal joint, and more particularly, to a needle bearing assembling device of a universal joint which can be assembled by simultaneously pressing and staking needle bearings in a continuous process at a press-fitting portion of the yoke. It is about.

In general, the steering device for a vehicle is provided with an input shaft connecting the output shaft and the handle to transmit the rotational force of the steering wheel to the output shaft connected to the wheel side so that steering operation can be made, and the input shaft is composed of a universal joint capable of deflection.

Universal joint, also called hook joint, is a coupling used when the angle between two axes changes frequently. It is used for shaft joints of machine tools and automobiles. The joints of the coupling include universal pin joints and universal ball joints. In this coupling, even if the rotating shaft is rotated at a constant angular velocity, the angular velocity of the driven shaft fluctuates at a period of 180 degrees. And the same angle with the driven shaft, when combined with both shafts, the angular velocity of the driven shaft is constant, and the angle where the shaft meets is good to limit the smooth transmission to 30 degrees below.

1 shows a general universal joint, with two yokes 1, a cross spider 2, and a needle bearing 3 inserted into a rotational coupling of the yoke 1 and spider 2 Consists of.

On the other hand, according to the prior art, in order to assemble the needle bearing 3 to the yoke 1, the yoke 1 and the spider 2 are first assembled, and then the needle bearing 3 is press-fitted to the rotary joint. It was press-fitted using. Subsequently, an operator transported and stoked the assembly to which the needle bearing 3 was press-fitted.

Therefore, such a conventional needle bearing assembly device has a disadvantage in that the assembly process is performed manually because the press-fitting equipment and the stacking equipment are separated from each other, thereby causing inconvenience in assembly work and assembly time.

The present invention is to solve the conventional problems as described above, not only can automatically supply the needle bearing to the indentation portion of the yoke, but also can perform the indentation process and the stacking process of the needle bearing at the same time in one facility It is an object of the present invention to provide a needle bearing assembly of a universal joint.

In order to achieve the above object, the present invention is a needle bearing assembly device of the universal joint, the servo motor, the first connecting block is axially connected to one side of the servo motor, and the first connection block is provided at a distance separated from the front end The second connection block, the cylinder block is fixed to the base plate spaced apart in front of the second connection block by a predetermined distance, the cylindrical block forming a cylindrical space therein, and the second connection block and the outer peripheral surface is screwed, A first slider positioned axially inside and slidably installed along the inside thereof, a press-in tool installed at one end of the first slider to press the needle bearing into the press-in portion of the yoke, and an internal space of the first slider. It is installed, one end is fixed to one end of the first connection block and the second slider which is slidably moved in the axial direction, and is connected to one end of the second slider The present invention provides a needle bearing assembly of a universal joint including a punch tool for stacking the needle bearing press-fitted as a press-fit tool in a forward movement.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a front view showing a needle bearing assembly of the universal joint according to the invention, Figure 3 is a front sectional view showing a needle bearing assembly of the universal joint according to the invention, Figure 4 is a universal joint according to the present invention Figure 5 is a side view showing the needle bearing assembly of Figure 5 is a front sectional view showing an operating state of the needle bearing assembly of the universal joint according to the present invention, Figure 1 for the same constituent members as the embodiment shown in the prior art Reference will be made to the same reference numerals with reference to FIG.

2 and 3, the needle bearing assembly device of the universal joint includes a servo motor 10 as a driving source, a first connection block 20 axially connected to the servo motor 10, and a first connection block. The second connecting block 30 is installed at a predetermined distance apart from the 20, the cylinder block 40 fixed to the base plate 41, and the first and second connecting blocks 20, 30 are connected to the cylinder The first slider 50 and the indentation tool 52 and the first slider 50, which slides along the inside of the block 40 to press the needle bearing 3 into the yoke 1, are moved inside the yoke. It consists of the 2nd slider 60 and the punch tool 62 which stack the needle bearing 3 press-fitted in (1).

Here, the first connection block 20 which is axially connected to one end of the servomotor 10 is composed of a bolt shaft 22 having a “T” shape and a hollow first adjusting unit 24, 1 The bolt shaft 22 is screwed into the adjusting part 24.

The bolt 26 is installed through the bolt shaft 22, and the bolt 26 is screwed to one end of the second slider 60.

In addition, the second connecting block 30 is installed in the front space of the first connecting block 20 at a spaced interval G1. The second connection block 30 is composed of a bearing metal 32 and the second adjusting portion 34 integrally with the bearing metal 32 and the thread is formed on the inner peripheral surface.

In addition, a cylinder block 40 fixed to the base plate 41 is installed at a front end of the second connection block 30 at a space G2.

The cylinder block 40 forms a hollow therein, and a needle bearing 3 for supplying the press-fitting portion of the yoke 1 is located at one end thereof in which the diameter is reduced.

On the other hand, the first slider 50 is slidably installed in the interior of the first control unit 24 to one side, screwed with the second control unit 34 of the second connection block 30, the cylinder block ( 40) is installed to be located in the axial direction.                     

The first slider 50 which is moved while being guided along the inside of the cylinder block 40 is provided with a pressing tool 52 for pressing the needle bearing 3 into the pressing part of the yoke 1 at one end thereof.

As shown in FIG. 4, the indentation tool 52 is provided with a guide groove 52a in a circumferential direction on a cylindrical shape to guide the movement of the guide protrusion 62a of the punch tool 62 described below. . Further, a load cell 54 is further installed between the indentation tool 52 and the first slider 50 to detect the indentation load.

The second slider 60 is installed in the hollow of the first slider 50 so as to be movable, and one end thereof is screwed by a bolt 26.

A collet 64 is installed at the other end of the second slider 60, and a punch tool 62 for staking the needle bearing 3 pressed into the press tool 52 is installed at one end of the collet 64. do.

A spring 66 is installed on the outer circumferential surface of the collet 64 holding the punch tool 62 to absorb shocks when the punch tool 62 and the first slider 50 are retracted.

In addition, one end outer peripheral surface of the punch tool 62 is formed to project the guide projections 62a facing each other to guide the movement of the punch tool 62.

The action of the needle bearing assembly of the universal joint according to the present invention configured as described above is as follows.

As shown in FIG. 5, the needle bearing 3 is mounted in one end of the cylinder block 40 by a separate automatic device, and the yoke 1 pre-assembled with the spider 2 is positioned at the front end thereof. .

In this state, the first slider 50 and the second slider 60 which are fastened to the first connection block 20 and the second connection block 30 are moved forward by the driving of the driving motor 10.

First, as the first slider 50 is advanced, the press-in tool 52 is also advanced to push the needle bearing 3 inside the cylinder block 40 toward the yoke 1 side.

In this case, the press-in movement distance of the first slider 50 is press-fitted according to the distance G2 distance between the second connection block 30 and the cylinder block 40 fixed by the base plate 41, The drive motor 10 moves forward only the second connection block 30 and the second slider 60 while the second connection block 30 is fixed by the cylinder block 40, and the collet 64 is moved forward. The punch tool 62 fixed to the needle pushes even the needle bearing 3 pressed into the yoke 1 to perform a stacking process.

The second slider 60 is moved in the axial direction of the inside of the first slider 50, the distance (G1) distance between the first connecting block 20 and the second connecting block 30 is moved to achieve a stacking. .

And the stacking is completed is made to the spring 66 for the shock absorption of the first slider 50, which is retracted like the punch tool 62.

Meanwhile, before the press fitting and stacking are performed, the first adjusting part 24 of the first connecting block 20 is spaced apart from the second connecting block 30 by the screw coupling degree with the bolt shaft 22 (G1). ) Can be adjusted to make depth adjustment when stacking the needle bearing (3).

In addition, the second adjustment portion 34 of the second connection block 30 also adjusts the distance G2 from the cylinder block 40 according to the screwing degree with the first slider 50 to adjust the pressure of the needle bearing 3. It is configured to adjust the entrance depth.

As described above, the present invention is made by stacking and co-injection at the same time coaxial from the drive motor 10, the production time is shortened, the installation area of the equipment is reduced.

In addition, the indentation and stacking depth of the needle bearing 3 can be easily adjusted.

Although the present invention has been illustrated and described with respect to certain preferred embodiments, the present invention is not limited to the above-described embodiments, and a person skilled in the art to which the present invention pertains has the present invention set forth in the claims below. Various modifications may be made without departing from the spirit of the invention.

As described above, the needle bearing assembly device of the universal joint of the present invention can not only automatically supply the needle bearing to the press fitting portion of the yoke, but also perform the press fitting process and the stacking process of the needle bearing at the same time in one facility. It is possible to simplify the installation and increase productivity.

Claims (6)

Needle bearing assembly device of universal joint, Servo motor, A first connection block axially connected to one side of the servomotor, A second connection block installed at a distance from the front end of the first connection block; A cylinder block fixed to the base plate at a predetermined distance from the front end of the second connection block, and forming a cylindrical space therein; A first slider screwed to the second connection block and a part of an outer circumferential surface thereof, the first slider being axially positioned inside the cylinder block and slidably installed along the inside thereof; A press-fit tool installed at one end of the first slider to press the needle bearing into the press-fit portion of the yoke; A second slider installed in an inner space of the first slider, one end of which is fixed to one end of the first connection block and slidably moved in an axial direction; A punch tool connected to one end of the second slider and stacking the needle bearing press-fitted into the press-in tool in a forward movement; Needle bearing assembly of the universal joint comprising a. The method of claim 1, The first connection block is composed of a bolt shaft and a first adjusting portion screwed to the bolt shaft, wherein the first adjusting portion is spaced from the second connecting block G1 according to the degree of screwing with the bolt shaft. The needle bearing assembly device of the universal joint that can be adjusted to the depth control when the needle bearing is adjusted. The method of claim 1, The second connection block is composed of a bearing metal and a second adjustment unit screwed to the first slider, the distance (G2) with the cylinder block is adjusted according to the screwing degree of the second adjustment unit the needle bearing Needle bearing assembly device for universal joints to control depth during press-fitting. The method of claim 1, Needle roller assembly device of the universal joint, characterized in that the load cell is installed between the first slider and the indentation tool to detect the indentation load. The method of claim 1, A collet holding the punch tool is installed between the second slider and the punch tool, and a spring is further provided on an outer circumferential surface of the collet for shock absorption with the first slider that is retracted after the stacking of the punch tool is completed. Needle bearing assembly device of universal joint to be installed. The method of claim 1, Needle roller assembly of the universal joint to guide the movement of the punch tool is formed with a guide protrusion protruding on the outer peripheral surface of one end of the punch tool.

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