KR100879406B1 - Bearing insertion device - Google Patents

Abstract

The present invention relates to a jig for bearing indentation, in accordance with an embodiment of the present invention, in a jig for injecting a bearing into a gear shaft, an upper housing having a hollow formed therein, and provided in the upper housing and having one end thereof An upper guide inserted into an inner circumferential surface of the bearing to guide the pressing direction, an upper buffer plate coupled to an upper slide groove provided on an inner wall of the upper housing, and provided between the upper buffer plate and the upper guide, the upper guide being elastic An upper elastic member for supporting, the lower housing is provided to face the upper housing with the gear shaft therebetween, the lower housing having a hollow formed therein, provided in the lower housing and one end is inserted into the inner peripheral surface of the bearing to guide the press-in direction Lower guide, lower coupled to the lower slide groove provided on the inner wall of the lower housing Provides a cushioning plate, and a jig for bearing indentation provided between the lower buffer plate and the lower guide and a lower elastic member for elastically supporting the lower guide.

According to the bearing pressing jig according to an embodiment of the present invention, the bearings can be press-fitted to both sides of the gear shaft at the same time accurately, and thus there is no fear of damaging the bearing cage and the workmanship and the quality improvement.

Bearing, press-fit, jig, gearshaft, guide, housing, buffer plate, elastic member

Description

Bearing insert jig {Bearing insertion device}

1 is a state of use of the bearing press jig according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing a position in which the bearing is pressed into the gear shaft in FIG.

3 is an exploded perspective view of the indentation jig of FIG.

4 is an exploded perspective view of the base jig of FIG.

5 is a cross-sectional view of FIG.

Explanation of symbols on the main parts of the drawings

100: bearing press jig 200: press ram

300, 300a: tapered roller bearing 400: gear shaft 410: gear 500: press-fitting jig 510: upper housing 511,511a: hollow 512: upper slide groove 512a; Lower slide groove

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513a: round jaw 514: coupling jaw

515: ram insertion groove 516,516a: release prevention jaw

520: upper guide 520a: lower guide
521: upper projection 521a: lower projection

522: upper guide 522a: lower guide
523: upper locking jaw 523a: lower locking jaw
530: upper buffer plate 530a: lower buffer plate 531: upper slide portion 531a: lower slide portion
532: upper coupling protrusion 532a: lower coupling protrusion
540: upper elastic member 540a: lower elastic member
550,550a: Pressing unit 600: Base fixture
610: lower housing

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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing press jig, and more particularly, to a bearing press jig for preventing damage to a bearing cage and reducing workmanship and improving quality by allowing roller bearings to be press-fitted at both ends of a gear shaft at the same time.

In general, bearings are also called bearings, and the shaft part in contact with the bearing is called a journal, and the bearing is divided into two types: sliding bearings and rolling bearings.

Rolling bearings have a small frictional resistance because the shaft and the ball or roller of the bearing are in contact with each other. When the shaft rotates, the ball or roller also rotates together. On rotating machine shafts, the load may be applied perpendicularly to the axis and in the axial direction, and the bearing must withstand such loads and ensure rotational movement.

Rolling bearings are further divided into ball bearings and roller bearings.

Ball bearings are steel balls sandwiched between the inner race and the outer race or inserted between two discs. Roller bearings are bearings with a large number of rolls inserted between the inner race and the outer race. Therefore, it is used for the place which endures big load and makes high speed rotation.

When such a rolling bearing is coupled to the shaft, the coupling between the inner diameter of the inner race of the bearing and the outer diameter of the shaft is such that no attack occurs. Therefore, the bearing must be forced in order to be coupled to the shaft.

Therefore, a bearing indentation jig was used. The conventional bearing indentation jig is a method in which a shaft and a bearing are coincident with an axis, and the bearing is pressed into a shaft by a press. As a result, unskilled workers may be assembled crooked during work or the cage of the bearing may be damaged during the assembly process.In case of press-fitting the bearings on both ends of the shaft, press-fitting should be done one at a time, resulting in excessive work time and labor. There is a problem.

The present invention is to solve the problems as described above, an embodiment of the present invention in the jig for pressing the bearing to the gear shaft, the upper housing having a hollow formed therein, the inside of the upper housing and one end The upper guide is inserted into the inner circumferential surface of the bearing to guide the pressing direction, the upper buffer plate coupled to the upper slide groove provided on the inner wall of the upper housing, provided between the upper buffer plate and the upper guide and the upper guide An upper elastic member supporting elastically, the lower housing is provided opposite the upper housing with the gear shaft therebetween, the lower housing having a hollow formed therein, provided inside the lower housing and one end is inserted into the inner peripheral surface of the bearing to guide the pressing direction The lower guide is coupled to the lower slide groove provided on the inner wall of the lower housing Disposed between the lower buffering plate, and the lower buffering plate and said lower guide, and includes a lower elastic member for urging the lower guide, it is associated with a bearing press-fit jig to be effective in reducing airborne operations and quality.

In order to achieve the above object, a preferred embodiment of the present invention is a jig for inserting a bearing into a gear shaft, the upper housing having a hollow formed therein, provided in the interior of the upper housing and one end is inserted into the inner peripheral surface of the bearing The upper guide to guide the indentation direction, the upper buffer plate coupled to the upper slide groove provided on the inner wall of the upper housing, the upper elastic member provided between the upper buffer plate and the upper guide and elastically supporting the upper guide. A lower housing provided with the gear shaft therebetween and opposed to the upper housing and having a hollow formed therein; a lower guide provided inside the lower housing and having one end inserted into an inner circumferential surface of the bearing to guide the pressing direction; Lower buffer play coupled to the lower slide groove provided on the inner wall of the housing , And it is provided between the lower plate and the buffer lower guide provides a bearing press-tool comprising a lower elastic member for urging the lower guide.

According to a preferred embodiment of the present invention, the upper housing has a separation prevention jaw is formed so as not to escape the upper guide therein, the pressing portion formed in the center protruding on the lower side is detachably coupled, the upper side is fastened to the pressram Characterized in that the coupling jaw is formed.

According to a preferred embodiment of the present invention, the lower housing is formed with a separation preventing jaw is formed so as not to escape the lower guide therein, the upper projection is formed on the upper side, the pressing portion of the central projection formed on the circular jaw is detachably coupled It is characterized by.

According to a preferred embodiment of the present invention, the upper guide, one side is formed with an upper protrusion supported by the upper elastic member, the other side is formed with an upper guide portion inserted into the inner peripheral surface of the bearing, the upper protrusion and the An upper locking jaw is formed between the upper guide parts, and the lower guide has a lower protrusion part supported on the lower elastic member on one side, and a lower guide part inserted on an inner circumferential surface of the bearing on the other side thereof. And a lower locking jaw is formed between the lower guide part.

According to a preferred embodiment of the present invention, the upper buffer plate, the upper slide portion moving along the upper slide groove, and the upper coupling protrusion formed in the center of the upper slide portion is coupled to the upper elastic member and Lower buffer plate,
And a lower coupling part moving along the lower slide groove, and a lower coupling protrusion formed at the center of the lower slide part and coupled to the lower elastic member.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the accompanying drawings. 1 is an exploded perspective view of a bearing press jig according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a position in which the bearing is pressed into the gear shaft in Figure 1, Figure 3 is an exploded perspective view of the press jig of Figure 1, 4 is an exploded perspective view of the base jig of FIG. 1, and FIG. 5 is a cross-sectional view of FIG. 1.

Bearing press jig 100 according to an embodiment of the present invention, as shown in Figures 1 to 5, is coupled to the press ram 200, tapered roller bearing 300 to the upper end of the gear shaft 400 The press fixture jig 500 and the base jig 600 which is seated on the bottom to support the lower end of the gear shaft 400 or press-fits the tapered roller bearing 300 to the lower end of the gear shaft 400 are largely classified.

3 and 5, the press fitting jig 500 is inserted into the inner circumferential surface of the bearing 300 to surround the outer circumferential surface of the upper guide 520 and the upper guide 520 to guide the pressing direction. Cylindrical upper housing 510 having a hollow 511, an upper buffer plate 530 coupled to an upper slide groove 512 formed on an inner wall of the upper housing 510, and an upper buffer plate 530 and an upper guide. It is provided between the 520 and the upper elastic member 540 for elastically supporting the upper guide 520.

At this time, the upper guide 520 has an upper protrusion 521 is formed on one side, the upper elastic member 540 to be described later by the upper protrusion 521 is elastically supported, the other side is inserted into the inner peripheral surface of the bearing 300 An upper guide portion 522 is formed to guide the pressing direction, and an upper locking jaw 523 is formed between the upper protrusion 521 and the upper guide portion 522.

In addition, the upper housing 510 is bolted to be detachably attached to the pressing portion 550, the protrusion is formed in the center on the lower side, the upper side is formed with a coupling jaw 514 is fastened to the press ram 200 by a bolt, the coupling The upper surface of the jaw 514 is formed with a ram insertion groove 515 corresponding to the press ram 200.

At this time, the pressing unit 550 is a portion for transmitting the pressure input to the bearing 300 when the bearing 300 is pressed into the gear shaft 400.

In addition, the separation prevention jaw 516 is formed inside the upper housing 510, and the separation prevention jaw 516 corresponds to the upper locking jaw 523 of the above-described upper guide 520, and the upper guide 520. By the upper engaging jaw 523 of the separation prevention jaw 516, the upper guide 520 moving up and down inside the upper housing 510 is to be prevented from being separated to the outside.

In addition, the upper buffer plate 530 serves to buffer the impact force applied to the upper guide 520, the upper slide groove 531 of the disk-shaped upper slide portion formed on the upper inner wall of the upper housing 510 Inserted and coupled to the 512, the center is formed protruding protrusion 532 is coupled to the upper elastic member 540.

Accordingly, one end of the upper elastic member 540 is supported by the upper protrusion 521 of the upper guide 520 and the other end of the upper elastic member 540 is supported by the upper coupling protrusion 532 of the upper buffer plate 530. use.

Meanwhile, the base jig 600 includes a lower housing 610, a lower guide 520a, a lower buffer plate 530a, and a lower elastic member 540a, as shown in FIGS. 4 and 5. The lower guide 520a, the lower buffer plate 530a, and the lower elastic member 540a except for 610 have the same function as those of the press-fitting jig 500 described above.

Here, the lower housing 610 is a cylindrical shape having a hollow 511a formed therein, a lower slide groove 512a is formed below the inner wall, and a separation prevention jaw 516a is provided on the upper inner wall.

In addition, as in the case of the upper housing 510 described above, a lower guide 520a, a lower buffer plate 530a, and a lower elastic member 540a are provided therein, and the upper side of the lower housing 610 has a round jaw ( 513a is formed, and the pressing portion 550a for pressing the bearing on the annulus 513a is coupled by a bolt so as to be detachable.

Looking at the operation of the bearing press jig 100 according to an embodiment of the present invention.

2 and 5, the bearing 300a to be press-fitted is placed on the base jig 600 supported on the floor. At this time, the lower guide portion 522a of the lower guide 520a exposed to the outside by the lower elastic member 540a is inserted into the inner circumferential surface of the bearing 300a.

Subsequently, the lower end of the gear shaft 400 is mounted on the bearing 300a, the gear 410 is fitted to the upper end, and then the bearing 300 is mounted. At this time, the bearing (300,300a) is a state before being pressed into the upper and lower ends of the gear shaft 400, only a part of the inner peripheral surface of the bearing (300,300a) is fitted to the gear shaft (400).

Thereafter, the press fitting jig 500 is positioned in the bearing 300 mounted on the top of the gear shaft 400. At this time, the upper guide portion 522 of the upper guide 520 is inserted into the inner circumferential surface of the bearing 300 so that the upper guide 520 guides the pressing direction of the bearing 300.

Thereafter, the press ram 200 descends while the press fitting jig 500 coupled to the press ram 200 comes down together, and the pressing part 550 presses the bearing 300 upper outer circumferential surface thereof, thereby driving the bearing 300. It will be pressed into (400).

At this time, the bearing 300a mounted at the lower end of the gear shaft 400 is pressed into the gear shaft 400 by the pressing part 550a of the base jig 600.

On the other hand, the upper and lower guides (520, 520a) is the upper guide portion 522 and the lower guide portion 522a end of the gear shaft 400 when the bearing (300,300a) is pressed in both ends of the gear shaft 400, respectively And the gear shaft 400 guides to the inner circumferential surfaces of the bearings 300 and 300a while retreating in the directions of the upper and lower buffer plates 530 and 530a, respectively.

As such, as the upper and lower guides 520 and 520a guide the indentation directions of the bearings 300 and 300a, damage and misassembly of the cages of the bearings 300 and 300a generated in the conventional indentation process can be prevented and the indentation jig ( 500 and the base jig 600 are located at both ends of the gear shaft 400 to press the bearings 300 and 300a in the direction of the gear shaft 400, thereby simultaneously bearing the bearings 300 and 300a to both ends of the gear shaft 400. It will be able to press in.

Unexplained reference numerals 521a, 523a, 531a, and 532a indicate lower projections of the lower guide, lower locking jaws of the lower guide, lower slide portions of the lower buffer plates, and lower coupling protrusions of the lower buffer plates, respectively.

According to the bearing press jig according to the embodiment of the present invention, the bearings can be press-fitted on both sides of the gear shaft at the same time accurately, and thus there is no fear of damaging the bearing cage and the workmanship and the quality improvement are achieved.

Claims (5)

In the jig to press the bearing into the gear shaft, An upper housing in which a hollow is formed; An upper guide provided in the upper housing and having one end inserted into an inner circumferential surface of the bearing to guide the pressing direction; An upper buffer plate coupled to an upper slide groove provided on an inner wall of the upper housing; An upper elastic member provided between the upper buffer plate and the upper guide to elastically support the upper guide; A lower housing provided opposite the upper housing with the gear shaft therebetween and having a hollow formed therein; A lower guide provided in the lower housing and having one end inserted into an inner circumferential surface of the bearing to guide the pressing direction; A lower buffer plate coupled to a lower slide groove provided on an inner wall of the lower housing; And Is provided between the lower buffer plate and the lower guide, bearing jig for including a lower elastic member for elastically supporting the lower guide. The method of claim 1, wherein the upper housing, A separation prevention jaw is formed in the upper guide so as not to escape from the inside, the pressing portion is formed in the center protruding detachably coupled to the lower side, the upper jaw bearing jaw characterized in that the engaging jaw is formed to be fastened to the pressram. The method of claim 1 or claim 2, wherein the lower housing, An anti-separation jaw is formed therein so that the lower guide does not escape from the inside, and the upper jaw is protruded from the upper side, and a press-fitting jig for removable bearing is characterized in that the center is protruded from the annular jaw. The method according to claim 1, The upper guide is One side is formed with an upper protrusion supported by the upper elastic member, the other side is formed with an upper guide portion inserted into the inner circumferential surface of the bearing, an upper locking jaw is formed between the upper protrusion and the upper guide portion The lower guide, One side is formed with a lower projection that is supported by the lower elastic member, the other side is formed with a lower guide portion inserted into the inner circumferential surface of the bearing, characterized in that the lower locking jaw is formed between the lower projection and the lower guide portion Jig for bearing indentation. The method according to claim 1, The upper buffer plate, An upper slide portion moving along the upper slide groove, and an upper coupling protrusion formed at the center of the upper slide portion and coupled to the upper elastic member, The lower buffer plate, And a lower slide portion moving along the lower slide groove, and a lower coupling protrusion formed at the center of the lower slide portion and coupled to the lower elastic member.

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