KR20030078418A - Bearing Reverse Turn Device for Universal Joint - Google Patents

Abstract

PURPOSE: A bearing reversing device for a universal joint is provided to correctly fit bearings into a yoke by uniformly reversing the bearings. CONSTITUTION: A bearing reversing device is composed of a housing(41), a sensor(42), a push cylinder, and a reverse cylinder. The housing has an inlet, through which bearings(45) are injected, and two passages. The sensor is installed at the upper part of a reversed position, and detects the plane state of the bearings. According to the detected value, the push cylinder pushes the bearing and feeds the bearing to a bearing supply unit, and a reverse cylinder moves a plate supporting the bottom of the bearing reversely and removes a support. Thus, the bearing is reversed and guided into the bearing supply unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bearing reversing device for a universal joint,

The present invention relates to a bearing indentation and caulking of a universal joint for assembling a universal joint that connects the shafts having different axes to each other to transmit power, and more particularly, And more particularly, to a bearing reversing device of a caulking device for universal joint manufacture for reversing a bearing so as to be able to correctly enter the bearing.

Generally, as described above, universal joint is a joint part that transmits rotation force by connecting rotation axes having different axis directions to each other and is mainly used for connecting power axes by connecting two axes with different axes.

One example of such a universal joint is applied to a steering apparatus in which the rotational force of a steering wheel of a vehicle is made up of a steering device, that is, a rack and a pinion. The universal joint is such that the yoke can be rotated by a bearing coupled to the cruciform coupling axis by positioning each end of the cruciform coupling axis in the shaft hole of each yoke and then pressing the thrust bearing from the outside of the shaft hole into the inside thereof.

In order to prevent the bearing pressurized into the shaft hole of the yoke from falling out during the running, the shaft is peeled off or peeled off, that is, the cowling operation is performed.

The above-described bearing indentation and caulking device for universal joint fabrication has been disclosed in detail in Korean Patent Application No. 1999-5118 (Publication No. 2000-56090, September 15, 2000).

In this universal joint, the cross-shaped connecting shaft is inserted into the shaft hole of the two yokes, and the shaft is assembled to the end of the shaft through the press-fitting and caulking device of the bearing. For the sake of understanding, an automatic manufacturing process of the universal joint will be schematically described.

First, a pair of yokes are assembled at bearing indentation and caulking devices of different universal joints. In other words, any one of the pair of yokes, that is, the cross-shaped connecting shaft is inserted into the shaft hole of the first yoke, the bearing is press-fitted into the cross-shaped connecting shaft, the peripheral portion of the shaft hole is caulked, The shape of the jig supporting and supporting the yoke is different. Therefore, the first yoke and the second yoke are to be worked on the bearing indentation and caulking device of the universal joint having different jigs.

The universal joint's bearing indentation and caulking system with different jigs is similar to the concept of pushing and caulking a bearing to the end of a cruciform connecting shaft inserted into the shaft hole of the yoke, but it must be supported so that the yoke is not twisted or twisted during the press- And the elements for correcting and fixing the position are different, and the universal joint is assembled through the bearing indentation and caulking device of each of the two universal joints.

The bearing indentation and calking apparatus of one universal joint according to the present invention is characterized in that when the yoke is transferred by the robot and is placed on the jig, the cylinder shaft installed on the yoke is lowered to correct and support the position correctly, A step of aligning the bearing in the axial direction of the shaft hole of the yoke, a step of pressing the aligned bearing in the axial direction of the shaft hole to be inserted into the axial hole and being fastened to the end of the cruciform connecting shaft, So that the peripheral portion of the shaft hole is caulked. Since the first yoke in which the bearing is press-fitted and caulked is only half-assembled, the bearing is press-fitted into the remaining connecting shaft through the other device.

The bearing indentation and caulking device of the universal joint as described above is contained in a hopper for storing bearings in a state where bearings are intermingled, and the gapper is rotated to enter the bearing inversion device by the guider at the center thereof. For reference, the bearing is open on one side and the cross-shaped connecting shaft is inserted and the opposite side is blocked. Therefore, it is necessary to supply the bearing so that the open surface enters the shaft axial velocity of the yoke. If the clogged surface of the bearing enters into the shaft hole of the yoke, it does not enter itself. However, for the entrance, it is necessary to carry out the automation process such as breaking the indentation rod which presses the bearing with a large load in the axial direction of the shaft hole, twisting or twisting the yoke I can not.

The bearing inversion device is a device for reversing the front and rear surfaces of the bearing in such a state that the bearing introduced into the inversion device can be inserted into the shaft hole of the yoke. In the conventional bearing inversion device, (The bearing which is positioned so that the open face is inserted) can be immediately inserted into the shaft hole of the shaft, and then, the shaft is stacked in the flexible tube and guided to the bearing supply device, .

However, when the bearing on the clogged surface comes into the reversing device, it is sorted and passed through a separate reversing track, inverted in the course of passing through the reversing track, and then joined with the soluble tube. The front and rear surfaces of the bearing are sensed using a proximity sensor (sensed by the signal value of the reflected light), and the bearing is transferred to the bearing feeder through the flexible tube according to the value, And sorting is performed so that the bearings are reversed.

When the power is interrupted unexpectedly during the operation of the conventional bearing reversing device as described above, a system that sequentially operates by an automatic program may not recognize the bearing passing through the reversing track during the initialization of the system, Which is often referred to as " These problems can lead to serious problems in which automated processes can not be performed and expensive equipment is destroyed or lost.

The present invention has been made to solve the problems associated with a universal joint bearing inversion device, and it is an object of the present invention to provide a bearing inversion device of a universal joint bearing press fitting and caulking device capable of properly supplying a bearing under any situation .

As an implementation means for implementing the present invention, there is provided an entry port through which a bearing, which is discharged from a hopper and enters, enters a hopper, and a sensing sensor is installed at an inverted position to detect an incoming bearing, The bearing is moved downward by reversing the center of gravity by moving the cylinder to push the bearing or to be transferred to the bearing supply device or by moving the plate which is supported on the sensing position by moving the plate supporting the bottom back and forth, And is guided to a feeding device.

The sensor for sensing the surface condition of the bearing and the structure for pushing the bearing or moving the pedestal back and forth may adopt various embodiments. However, in the present specification, the adoption of the pneumatic cylinder will be exemplified.

The sensing portion defined herein means a means for sensing the state of the surface of the bearing.

According to the present invention, it is possible to sense the bearing entering the front and rear surfaces without any interference into the reversing device, judge whether the bearing is in bad condition through the position of the front surface thereof, immediately reverse the sensed position to be guided to the bearing supplying device, It is possible to always supply the bearings properly even when restarting after a situation such as the above.

1 is a perspective view illustrating a bearing press fitting and caulking device of a universal joint,

2 is a plan view of a bearing inversion device of a press fitting and caulking device of a universal joint according to the present invention,

3 is a cross-sectional view of the main portion of the universal joint according to the present invention, viewed from the front, of the bearing inversion device of the press fitting and caulking device,

Fig. 4 is a side sectional view taken along the line A of Fig. 3,

5 is a sectional view of the portion A in Fig. 3 viewed from the front,

FIG. 6 is a plan sectional view taken along line A of FIG. 3,

FIG. 7A is a front elevational sectional view showing a bearing for conveying a bearing which has entered a correct state according to the present invention, and FIG.

FIG. 7B is a view similar to FIG. 7A, and is a front elevational cross-sectional view illustrating a process of reversing the inverted bearing again.

Description of the Related Art

30: hopper 40: bearing inversion device

41: housing 42: sensing part

43: push cylinder 44: reversing cylinder

41a: inlet 41b, 41c: passage

45: Bearings

Hereinafter, a bearing inversion device of a universal joint bearing indenting and calking device according to the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a perspective view schematically showing a bearing press fitting and caulking device of a universal joint. In FIG. 1, reference numeral 10 denotes a jig for supporting a yoke, reference numeral 11 denotes a yoke support cylinder for correcting and supporting the yoke, And a caulking tool assembly for rapidly advancing by a pneumatic pressure around the press-in rod and caulking the shaft hole of the yoke.

3 is a cross-sectional view of a main portion viewed from the front of the bearing inversion apparatus of the present invention, Fig. 5 is an enlarged front view of a portion A of Fig. 3, Fig. 6 is an enlarged plan view of a portion A of Fig. 30 is a hopper containing bearings 45 and 40 is a reversing device for reversing the bearings 45 separated from the hopper 30. [

The reversing device 40 includes a housing 41, a sensing portion 42, a push cylinder 43, and a reversing cylinder 44. The housing has an inlet 41a through which the bearing 45 separated from the hopper enters and two passages 41b and 41c.

The two passages 41b and 41c are joined to be connected to the flexible tube so as to be guided to the feed device of the bearing 45 so that the bearings 45 entering the inlet 41a are detected to be advanced and fall The passage is divided.

The sensing unit 42 is fixed on the divided passage, and determines whether the upper surface of the sensing unit 42 is open or blocked by an amount of the reflected light. The sensing unit 42 may be realized by various switches such as a physically operated limit switch, a proximity switch, and an optical sensor.

The push cylinder 43 is automatically operated when the signal sensed by the sensing unit 42 is turned on, that is, when the upper surface of the bearing 45 is detected as being open. In a preferred embodiment, But it can be applied to a variety of applications such as a solenoid valve or a hydraulic cylinder. Accordingly, the push cylinder 43 is advanced to transfer the bearing 45 to the passage to be laminated into the flexible tube.

The reversing cylinder 44 is automatically operated when a signal sensed by the sensing unit 42 is turned off, that is, when the upper surface of the bearing 45 is detected as being blocked. In a preferred embodiment, However, solenoid valve, hydraulic cylinder and so on can be applied. Thus, the reversing cylinder 44 is retracted to transfer the bearing to passage "42c " to laminate it into the flexible tube.

Hereinafter, the operation of the bearing reversing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 and 3, when the bearing 45, which enters the inlet of the housing, reaches the lower portion of the sensing portion, the piston rod of the sensor portion descends on the bearing. At this time, when the plane of the bearing is opened, the piston rod is inserted into the bearing, and if the plane of the bearing is blocked, the surface of the piston is touched. Accordingly, the on / off of the sensor unit is sensed according to the extension length of the piston rod, and the push cylinder or the reversing cylinder is operated according to the sensing result.

Therefore, when the bearing 45 opened at the upper side is positioned below the sensing unit, the sensing unit senses the sensing unit as being on and transmits the electrical signal to the central processing unit, The push cylinder is operated to advance the piston rod to push back the bearing 45 (see FIG. 7A). Thus, the bearing 45 is laminated along the passage "42b" into the flexible tube.

In addition, when the bearing 45 with the top surface closed is positioned below the sensing unit, the sensing unit senses the off state and transmits the electrical signal to the central processing unit, thereby operating the reversing cylinder by the central processing unit, And the lower portion of the bearing 45 is opened (see Fig. 7B).

Thus, the bearing 45 is inserted reversely into the bearing supply device through the flexible tube along the reversing passage 41c with the bearing turned upside down, with its center of gravity tilted to the open hole.

As described above, the bearing reversing device according to the present invention reverses the bearing immediately when the bearing enters. Therefore, even if the operation is interrupted, such as power failure or automatic process stop, the flexible tube . If a bearing with a different bearing size is inserted in the reversing device to press the shaft into the shaft hole, there is an advantage in that it can be replaced by replacing it with a reversing device having a passage corresponding to the diameter of the bearing.

Claims (1)

And a sensing sensor is installed at an upper portion of the reversing position to sense an incoming bearing. The pushing cylinder is operated according to the signal values (on, off) to push the bearing The bearing is moved downward by the center of gravity as the bearing is moved to the bearing supply unit or the bearing placed on the sensing position is moved backward by operating the reversing cylinder so that the plate supporting the bottom is moved back, Wherein the guide is guided to the bearing of the universal joint.