阅读说明：本技术 一种旋转中心可调的滚轮轴承 (Roller bearing with adjustable rotating center ) 是由 王冰 陈庆熙 陈太平 田文军 赵荣多 李洁梅 曹一冰 邱奕辉 于 2020-12-30 设计创作，主要内容包括：本申请涉及轴承技术领域,尤其涉及一种旋转中心可调的滚轮轴承,包括外圈、内圈以及设于外圈与内圈之间的滚动体,所述内圈内嵌套有偏心轴,所述偏心轴内开设有偏心通孔,所述偏心通孔的中心轴与所述内圈的中心轴为偏心设置,所述偏心轴的端面在相对内圈中心的偏心位置上设有偏心调节孔。本申请提供旋转中心可调的滚轮轴承,通过设置所述偏心调节孔,能够方便快捷且准确地调整滚轮轴承的旋转中心,有效防止轴承外圈与导轨之间的距离过大会过小,保证了滚轮轴承在导轨上正常平稳运行。(The application relates to the technical field of bearings, in particular to a roller bearing with an adjustable rotating center, which comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, wherein an eccentric shaft is embedded in the inner ring, an eccentric through hole is formed in the eccentric shaft, the central shaft of the eccentric through hole and the central shaft of the inner ring are eccentrically arranged, and an eccentric adjusting hole is formed in the eccentric position of the end surface of the eccentric shaft relative to the center of the inner ring. The application provides center of rotation adjustable gyro wheel bearing, through setting up eccentric regulation hole can convenient and fast and accurately adjust gyro wheel bearing's center of rotation, prevents effectively that the distance between bearing inner race and the guide rail is too big can the undersize, has guaranteed gyro wheel bearing normal even running on the guide rail.)

1. The roller bearing with the adjustable rotating center comprises an outer ring (1), an inner ring (2) and a rolling body (3) arranged between the outer ring (1) and the inner ring (2), and is characterized in that an eccentric shaft (4) is embedded in the inner ring (2), an eccentric through hole (41) is formed in the eccentric shaft (4), the central shaft of the eccentric through hole (41) and the central shaft of the inner ring (2) are arranged eccentrically, and an eccentric adjusting hole (40) is formed in the end face of the eccentric shaft (4) in an eccentric position relative to the center of the inner ring (2).

2. A centre of rotation adjustable roller bearing according to claim 1, wherein the inner ring (2) comprises a left inner ring and a right inner ring, and wherein the left, right and outer rings (1) form a three-point contact with the rolling bodies (3).

3. A roller bearing with an adjustable center of rotation according to claim 2, wherein a contact angle a formed by a line connecting the centers of the rolling elements (3) and contact points of the left inner ring and the right inner ring with a radial plane of the bearing is 10 ° to 20 °.

4. A centre of rotation adjustable roller bearing according to claim 1, wherein the axial width of the inner ring (2) is smaller than the axial width of the outer ring (1), and the inner ring (2) is located at the centre of the width dimension of the outer ring (1).

5. A centre-of-rotation adjustable roller bearing according to claim 4, wherein the first end of the eccentric shaft (4) is provided with a radially extending flange (42), the inner side of the flange (42) abutting the end face of the inner ring (2), and the end face of the eccentric shaft (4) adjacent the flange (42) being flush with the end face of the outer ring (1).

6. A centre of rotation adjustable roller bearing according to claim 5, wherein the outer surface of the flange (42) is annularly stepped, and the step in the outer surface of the flange (42) remote from the outer ring (1) forms a seal with the inner wall of the outer ring (1) by means of the first sealing ring (6).

7. A roller bearing with an adjustable center of rotation according to claim 6, wherein the first seal ring (6) comprises a seal ring body (61), a snap projection (62) provided on an outer ring of the seal ring body (61), and a butt leg (63) provided on an inner ring of the seal ring body (61), and an annular groove is formed between the snap projection (62) and the seal ring body (61) on a side away from the rolling elements (3).

8. A centre of rotation adjustable roller bearing according to claim 7, wherein the outer ring (1) is provided with a first ring groove (11) at the end adjacent to the flange (42) on the inside, the outside of the first seal ring (6) is clamped in the first ring groove (11), and the inside is pressed against the stepped surface of the outer surface of the flange (42) away from the outer ring (1).

9. A centre-of-rotation adjustable roller bearing according to claim 1, wherein the second end of the eccentric shaft (4) is provided with a protruding shaft (43) protruding axially from the inner ring (2).

10. The roller bearing with the adjustable rotating center according to claim 1, wherein the second end of the eccentric shaft (4) is further sleeved with a flat collar (5), the outer side of the flat collar (5) is in an annular step shape, and the step surface of the outer side surface of the flat collar (5) far away from the outer ring (1) and the inner wall of the outer ring (1) form a seal through a second sealing ring (7);

outer lane (1) is equipped with second annular clamping groove (12) at the tip that is close to protruding axle (43) in the inboard, the outside card of second sealing washer (7) is located in second annular clamping groove (12), inboard support press keep away from on the ladder face of outer lane (1) in circlip (5) surface.

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of bearings, in particular to a roller bearing with an adjustable rotating center.

[ background of the invention ]

In roller track systems, because of the cumulative assembly errors, the roller bearings do not contact the track surface well during assembly, leaving gaps or interference, concentric roller bearings and eccentric roller bearings are often used in combination: the concentric roller bearing plays a role of positioning reference, and the eccentric roller bearing plays a role of pre-tightening adjustment. The eccentric roller bearing can achieve the purpose of pre-tightening adjustment by adjusting the position of the bearing center of the eccentric roller bearing, but the conventional adjusting mode is troublesome to operate and inaccurate because the position of a bearing mounting screw relative to a mounting hole is generally rotated manually. In addition, the conventional roller bearing is generally of a two-point contact structure, and has insufficient capability of bearing radial and axial bidirectional loads, so that the roller bearing is unstable in operation.

[ summary of the invention ]

The utility model aims at providing a centre of rotation adjustable gyro wheel bearing, through setting up eccentric shaft and eccentric regulation hole can convenient and fast and accurately adjust gyro wheel bearing's centre of rotation, effectively prevents too big or undersize of distance between bearing inner race and the guide rail, has guaranteed gyro wheel bearing normal even running on the guide rail.

The application is realized by the following technical scheme:

the roller bearing with the adjustable rotating center comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, wherein an eccentric shaft is nested in the inner ring, an eccentric through hole is formed in the eccentric shaft, the central shaft of the eccentric through hole and the central shaft of the inner ring are eccentrically arranged, and an eccentric adjusting hole is formed in the end face of the eccentric shaft in an eccentric position relative to the center of the inner ring.

According to the roller bearing with the adjustable rotating center, the inner ring comprises the left inner ring and the right inner ring, and three-point contact is formed among the left inner ring, the right inner ring, the outer ring and the rolling body.

In the roller bearing with the adjustable rotation center, the contact angle a formed by the connecting line of the contact points of the center of the rolling body and the left inner ring and the right inner ring and the radial plane of the bearing is 10-20 degrees.

In the roller bearing with the adjustable rotation center, the axial width of the inner ring is smaller than that of the outer ring, and the inner ring is positioned at the center of the width dimension of the outer ring.

In the roller bearing with the adjustable rotation center, the first end of the eccentric shaft is provided with the flange extending along the radial direction, the inner end face of the flange is attached to the outer end face of the left inner ring, and the end face of the eccentric shaft close to the flange is flush with the end face of the outer ring.

According to the roller bearing with the adjustable rotating center, the outer surface of the flange is in an annular step shape, and the step surface far away from the outer ring in the outer surface of the flange and the inner wall of the outer ring form sealing through the first sealing ring.

According to the roller bearing with the adjustable rotating center, the first sealing ring comprises a sealing ring body, a clamping protrusion arranged on the outer ring of the sealing ring body and a supporting foot arranged on the inner ring of the sealing ring body, and an annular groove is formed between the clamping protrusion and the sealing ring body on one side far away from the rolling body.

According to the roller bearing with the adjustable rotating center, the end part of the outer ring, close to the flange, in the inner side is provided with the first annular clamping groove, the outer side of the first sealing ring is clamped in the first annular clamping groove, and the inner side of the first sealing ring is pressed on the stepped surface, far away from the outer ring, in the outer surface of the flange.

According to the roller bearing with the adjustable rotating center, the second end of the eccentric shaft is provided with the protruding shaft protruding out of the inner ring along the axial direction.

According to the roller bearing with the adjustable rotating center, the second end of the eccentric shaft is further sleeved with a flat retainer ring, the outer side of the flat retainer ring is in an annular step shape, and the outer side of the flat retainer ring is sealed with the inner wall of the outer ring through a second sealing ring;

the outer lane is equipped with second annular draw-in groove in the tip that is close to the protruding axle in the inboard, the outside card of second sealing washer is located in the second annular draw-in groove, inboard support press keep away from the outer lane in the circlip surface on the ladder face.

Compared with the prior art, the method has the following advantages:

1. the eccentric shaft and the eccentric adjusting hole are arranged, so that the rotating center of the roller bearing can be conveniently, quickly and accurately adjusted, the roller bearing is quickly installed, and the roller bearing is ensured to be normally contacted with the guide rail and stably run.

2. The roller bearing has a three-point contact structure design, so that the roller bearing can bear radial and axial bidirectional loads and has the capability of resisting impact and overturning moment.

3. The sealing washer in this application is gone into ring groove's assembly method for outer end card, and the operation is simple and convenient more during the assembly of one side, and the protruding embedding ring groove of card of on the other hand cooperation sealing washer outer lane, the inner foot of supporting supports on the eccentric shaft, can provide more excellent more stable sealed effect.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a full sectional view of a center of rotation adjustable roller bearing according to an embodiment of the present application.

FIG. 2 is an enlarged view of the portion A in FIG. 1 according to the embodiment of the present application.

Fig. 3 is a full sectional view of the eccentric shaft according to the embodiment of the present application.

Fig. 4 is a full sectional view of a first seal ring according to an embodiment of the present disclosure.

Fig. 5 is a schematic view illustrating a state where the distance between the roller bearing and the guide rail is too large according to the embodiment of the present application.

Fig. 6 is a schematic view illustrating a state where interference is generated between the roller bearing and the guide rail according to the embodiment of the present application.

Fig. 7 is a schematic view illustrating a state where the distance between the roller bearing and the guide rail is optimal according to the embodiment of the present application.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1 to 4, an embodiment of the present application provides a roller bearing with an adjustable rotation center, which includes an outer ring 1, an inner ring 2, and rolling elements 3 disposed between the outer ring 1 and the inner ring 2, an eccentric shaft 4 is nested in the inner ring 2, an eccentric through hole 41 is formed in the eccentric shaft 4, a central axis of the eccentric through hole 41 and a central axis of the inner ring 2 are eccentrically disposed, and an eccentric adjusting hole 40 is formed in an end surface of the eccentric shaft 4 at an eccentric position relative to a center of the inner ring 2. More preferably, the eccentric shaft 4 is interference fitted with the inner ring 2.

When the roller bearing is installed, a bolt or other connecting pieces penetrate through the eccentric through hole 41 to screw the roller bearing on equipment in a half-screwing mode, then a tool stretches into the eccentric adjusting hole 40 to turn the inner ring, the distance between the central shaft of the eccentric through hole 41 and the guide rail is kept as H, the rotating center of the whole roller bearing moves downwards or upwards when the inner ring is turned, after the contact distance between the roller bearing and the guide rail reaches the optimal distance shown in figure 7, the roller bearing is ensured to be in normal contact with the guide rail and stably run, then the roller bearing is completely screwed on the equipment, and the situation that the distance between the roller bearing and the guide rail 300 shown in figure 5 is too large or the situation that the distance between the roller bearing and the guide rail 300 shown in figure 6 is too small and mutually interferes can be effectively prevented. Namely, the eccentric shaft and the eccentric adjusting hole are arranged, so that the rotating center of the roller bearing can be conveniently, quickly and accurately adjusted, the overlarge or undersize distance between the outer ring of the bearing and the guide rail is effectively prevented, the roller bearing is quickly installed, and the roller bearing is ensured to be normally contacted with the guide rail and stably run.

Further, the inner ring 2 comprises a left inner ring and a right inner ring, and three-point contact is formed between the left inner ring, the right inner ring and the outer ring 1 and the rolling body 3. Preferably, a contact angle a formed by a connecting line of the centers of the rolling bodies 3 and contact points of the left inner ring and the right inner ring and a radial plane of the bearing is 10-20 degrees, and preferably 15 degrees. The bearing unit has the advantages that more rolling bodies can be arranged in the bearing assembly process by adopting the double-half inner ring structure of the left inner ring and the right inner ring, the bearing capacity of the bearing unit is enhanced, in addition, a first contact point is formed between the left inner ring and the left lower side of the rolling body, a second contact point is formed between the right inner ring and the right lower side of the rolling body, a third contact point is formed in a bearing radial plane where the intersection point of the first contact point and the second contact point with the central connecting line of the rolling body is located, the three contact points are mutually supported to form a stable dynamic contact structure, and the three-point contact structure design ensures that the rolling bearing can bear radial and axial bidirectional loads and has the.

In order to further enhance the bidirectional stability of the bearing unit by the symmetrical arrangement, the axial width of the inner ring 2 is smaller than the axial width of the outer ring 1, and the inner ring 2 is located at the center of the width dimension of the outer ring 1.

Further, a flange 42 extending in the radial direction is arranged at the first end of the eccentric shaft 4, the inner end face of the flange 42 is attached to the outer end face of the left inner ring, and the end face of the eccentric shaft 4 close to the flange 42 is flush with the end face of the outer ring 1. The whole end face of the bearing unit can be attached to the assembled mechanism more, and the operation is more stable.

Further, the outer surface of the flange 42 is in an annular step shape, specifically, two steps, and a step surface of the outer surface of the flange 42, which is far away from the outer ring 1, and the inner wall of the outer ring 1 form a seal through the first seal ring 6.

Specifically, the first seal ring 6 includes a seal ring body 61, a clamping protrusion 62 disposed on an outer ring of the seal ring body 61, and a supporting leg 63 disposed on an inner ring of the seal ring body 61, wherein an annular groove is formed between the clamping protrusion 62 and the seal ring body 61 on a side away from the rolling element 3. Preferably, the cross section of the annular groove is in a transverse V shape.

Wherein, outer lane 1 is equipped with first ring groove 11 in the tip that is close to flange 42 in the inboard, the outside card of first sealing washer 6 is located in first ring groove 11, inboard support press on the ladder face of keeping away from outer lane 1 in the flange 42 surface. The sealing washer is the outer end card income ring groove's assembly method, and the operation is more simple and convenient during the assembly of one side, and the protruding embedding ring groove of card of on the other hand cooperation sealing washer outer lane, the inner foot of supporting supports on the eccentric shaft, can provide more excellent more stable sealed effect.

In this embodiment, the second end of the eccentric shaft 4 is provided with a protruding shaft 43 protruding from the inner ring 2 along the axial direction. The protruding shaft 43 can separate the rolling part of the roller bearing from the equipment, so that the rolling process is smoother.

The second end of the eccentric shaft 4 is further sleeved with a flat retainer ring 5, the outer side of the flat retainer ring 5 is in an annular step shape, specifically, two steps are formed, and the step surface far away from the outer ring 1 in the outer side surface of the flat retainer ring 5 and the inner wall of the outer ring 1 form a seal through a second sealing ring 7. The second sealing ring 7 and the first sealing ring 6 are symmetrically arranged. And correspondingly, the end part of the outer ring 1 close to the convex shaft 43 at the inner side is provided with a second annular clamping groove 12, the outer side of the second sealing ring 7 is clamped in the second annular clamping groove 12, and the inner side is pressed on the stepped surface far away from the outer ring 1 in the outer surface of the flat retainer ring 5. The function of the flat retainer ring can fix the bearing inner ring on the shaft on one hand, and can form better sealing function on the other hand.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application, and therefore, should not be taken as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.