CN215920331U - Press-fitting positioning device for bearing outer ring - Google Patents

Abstract

The utility model relates to a press-fitting positioning device of a bearing outer ring, which is used for positioning the bearing outer ring on a bearing hole seat and comprises a guide rod, an upper positioning block, a lower positioning block and an axial locking mechanism, wherein the upper positioning block is sleeved on the guide rod and can freely slide up and down along the guide rod; a through hole for the guide rod to pass through is formed in the lower positioning block, a circle of lower positioning surface for placing the bearing outer ring is arranged on the upper side of the lower positioning block, and the lower positioning surface is attached to the raceway of the bearing outer ring; the axial locking mechanism is arranged between the lower positioning block and the guide rod shaft and used for axially locking the lower positioning block on the guide rod.

Description

Press-fitting positioning device for bearing outer ring

Technical Field

The utility model relates to the field of mechanical positioning tools, in particular to a press-fitting positioning device for a bearing outer ring.

Background

In the field of assembling and manufacturing automobile transfer cases, main reducers and Edrive assemblies, the product has the requirements of high rotating speed and low noise. The bearing is one of the key components of the assembly product, the bearing assembly is a key process of the assembly process, and the assembly quality directly influences the assembly precision of the assembly. In the actual assembling process, the bearing outer ring is required to be respectively pressed at two ports of a bearing hole seat, a separate installation mode is usually adopted in the existing installation mode, firstly, the bearing outer ring is placed on a pressure-bearing base of a press, then, the bearing hole seat is installed above the pressure-bearing base, the pressure head of the press is utilized to press the bearing hole seat down to press the bearing outer ring on the pressure-bearing base, so that the bearing outer ring is pressed into the lower port of the bearing hole seat, then, the bearing outer ring is placed onto the upper port of the bearing hole seat, and then, the pressure head is utilized to press the bearing outer ring down to the upper port of the bearing hole seat. By adopting the installation mode, the two bearing outer rings need to be respectively pressed and installed, the working efficiency is lower, the bearing outer rings are not pre-installed and positioned before being installed, the position deviation is easily generated in the pressing and installing process, the installation of the bearing outer rings is not in place, the problems of uneven stress, deflection of the bearings and improper assembly of the bearings are finally caused, the products are reworked and scrapped, and the economic loss is caused for enterprises.

Disclosure of Invention

In view of the above disadvantages of the prior art, the technical problem to be solved by the present invention is to provide a press-fitting positioning device for bearing outer rings, which can press-fit two bearing outer rings simultaneously, thereby improving the working efficiency, and also can pre-install and position the bearing outer rings, thereby improving the press-fitting quality.

In order to achieve the purpose, the utility model provides a press-fitting positioning device of a bearing outer ring, which is used for positioning the bearing outer ring on a bearing hole seat and comprises a guide rod, an upper positioning block, a lower positioning block and an axial locking mechanism, wherein the upper positioning block is sleeved on the guide rod and can freely slide up and down along the guide rod; a through hole for the guide rod to pass through is formed in the lower positioning block, a circle of lower positioning surface for placing the bearing outer ring is arranged on the upper side of the lower positioning block, and the lower positioning surface is attached to the raceway of the bearing outer ring; the axial locking mechanism is arranged between the lower positioning block and the guide rod shaft and used for axially locking the lower positioning block on the guide rod.

Further, axial locking mechanism is including offering in the global locking groove of guide bar lower extreme and installing in the lower locating piece and stretching into to the stop pin that runs through in the through-hole, the locking groove includes along the axial slot part of guide bar axial extension and connect at axial slot part upper end and along the circumference slot part of guide bar circumferential extension, the stop pin can insert in axial slot part and the circumference slot part.

Further, the lower port of the axial groove part is gradually widened from top to bottom.

Furthermore, the upper positioning block is provided with a positioning cylinder positioned at the lower end of the upper positioning surface, the radius of the positioning cylinder is smaller than that of an inner hole of the bearing outer ring, the circumferential surface of the positioning cylinder is provided with positioning holes, the positioning structure comprises a positioning piece and a spring, the positioning piece is arranged in the positioning holes, the outer side end of the positioning piece is provided with a convex arc guide surface, and the spring acts on the inner side of the positioning piece to enable the arc guide surface to extend out of the positioning holes; when the bearing outer ring is arranged on the upper positioning surface, the lower end of the bearing outer ring is abutted against the upper end of the arc guide surface of the positioning piece.

Furthermore, the upper positioning surface and the lower positioning surface are conical surfaces and are used for placing a bearing outer ring of the conical rolling bearing.

Furthermore, the bearing positioning device also comprises a limit stop which is fixed on the guide rod and positioned below the upper positioning block, and the limit stop can penetrate through the bearing outer ring.

Furthermore, limit stop is ring shape, and fixed cup joint is on the guide bar.

Furthermore, the upper end of the guide rod is provided with a limit stop part.

As described above, the press-fitting positioning device according to the present invention has the following advantageous effects:

when the bearing locking device is used, pre-assembly positioning is firstly carried out, two bearing outer rings are respectively arranged on an upper positioning surface and a lower positioning surface, and the bearing outer rings are locked on the upper positioning surface by utilizing a positioning structure; then, the lower positioning block is held by hand to the hole at the lower end of the bearing hole seat, the bearing outer ring on the lower positioning block is aligned and pre-installed in the hole at the lower end, the guide rod is inserted downwards from the hole at the upper end of the bearing hole seat and penetrates through the through hole of the lower positioning block, the bearing outer ring on the lower side of the upper positioning block is pre-installed in the hole at the upper end of the bearing hole seat, then the lower positioning block is axially locked on the guide rod by utilizing an axial locking mechanism, and at the moment, the two bearing outer rings are pre-installed and positioned at the holes at the two ends of the bearing outer ring respectively. And then, press-fitting work is carried out, a pressure-bearing base is arranged below the bearing hole seat, a pressure head is pressed down on an upper positioning block, the press-fitting positioning device, the bearing outer ring and the bearing hole seat move downwards together until the lower positioning block is pressed against the pressure-bearing base and becomes fixed, the pressure head continues to press down the upper positioning block to press the upper bearing outer ring into a hole at the upper end of the bearing hole seat, and meanwhile, the bearing hole seat is pressed down to press the bearing outer ring on the lower positioning block into a hole opening at the lower end of the bearing hole seat, so that the press-fitting work of the two bearing outer rings to two hole openings of the bearing hole seat is completed. The press-fitting positioning device can simultaneously press-fit two bearing outer rings, realizes pre-fitting positioning before press-fitting, and ensures stable position between the bearing outer rings and the bearing hole seats in the press-fitting process, thereby ensuring the press-fitting quality of the bearing outer rings.

Drawings

Fig. 1 is a schematic structural view of the press-fitting positioning device of the present invention.

Fig. 2 is a schematic view of the press-fitting positioning device of the present invention for positioning the bearing outer ring on the bearing hole seat.

Fig. 3 is a schematic working diagram of the bearing outer ring during press-fitting.

Description of the element reference numerals

1 guide bar

11 limit stop part

2 upper locating block

21 upper positioning surface

22 positioning cylinder

3 lower locating block

31 lower locating surface

32 through via

4 limit stop

5 positioning piece

6 locking groove

61 axial groove part

62 circumferential groove portion

7 locking pin

8 bearing hole seat

9 pressing machine

91 pressure-bearing base

92 pressure head

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.

Referring to fig. 1, the utility model provides a press-fitting positioning device for a bearing outer ring, which is used for positioning the bearing outer ring into two end orifices of a bearing hole seat 8, and comprises a guide rod 1, an upper positioning block 2, a lower positioning block 3 and an axial locking mechanism, wherein the upper positioning block 2 is sleeved on the guide rod 1 and can freely slide up and down along the guide rod 1, the lower side of the upper positioning block 2 is provided with a circle of upper positioning surface 21 for placing the bearing outer ring, the upper positioning surface 21 is attached to a raceway (a surface on the inner side of the bearing outer ring for rolling a roller) of the bearing outer ring, and the upper positioning block 2 is also provided with a positioning structure for locking the bearing outer ring on the upper positioning surface 21; a through hole 32 for the guide rod 1 to pass through is formed in the lower positioning block 3, a circle of lower positioning surface 31 for placing the bearing outer ring is arranged on the upper side of the lower positioning block 3, and the lower positioning surface 31 is attached to a raceway of the bearing outer ring; the axial locking mechanism is arranged between the lower positioning block 3 and the guide rod 1 shaft and is used for axially locking the lower positioning block 3 on the guide rod 1.

The basic working principle of the press-fitting positioning device provided by the utility model is as follows: when the bearing hole seat is used, the bearing hole seat 8 is arranged on an installation platform of the press 9, the hole openings at the two ends of the bearing hole seat 8 respectively face upwards and downwards, and the installation platform can move up and down in the press 9. The method comprises the following steps of firstly, performing pre-assembly positioning, namely, placing a bearing outer ring on a lower positioning block 3, keeping a raceway of the bearing outer ring attached to a lower positioning surface 31, installing the bearing outer ring on an upper positioning surface 21 of an upper positioning block 2 from the lower part, keeping the raceway of the bearing outer ring attached to the upper positioning surface 21, and locking the bearing outer ring on the upper positioning surface 21 by utilizing a positioning structure without falling off; then, the lower positioning block 3 is held by hand to the hole at the lower end of the bearing hole seat 8, the bearing outer ring on the lower positioning block is aligned and pre-installed in the hole at the lower end, the guide rod 1 is inserted downwards from the hole at the upper end of the bearing hole seat 8, the lower end of the guide rod 1 penetrates through the through hole 32 of the lower positioning block 3, the bearing outer ring arranged on the lower side of the upper positioning block 2 is pre-installed in the hole at the upper end of the bearing hole seat 8, then the lower positioning block 3 is axially locked on the guide rod 1 by utilizing an axial locking mechanism, and at the moment, the two bearing outer rings are pre-installed and positioned at the holes at the two ends of the bearing outer ring respectively and keep stable. Then, the press-fitting operation is started, referring to fig. 2, the press 9 is provided with a fixed pressure-bearing base 91 below the bearing hole seat 8, the pressure head 92 of the press 9 is positioned above the bearing hole seat 8, the pressure head 92 presses the upper end surface of the upper positioning block 2 downwards, the bearing outer ring pressed on the upper positioning block 2 and the bearing hole seat 8 move downwards together, meanwhile, the guide rod 1 and the lower positioning block 3 axially fixed on the guide rod 1 also move downwards along with the upper positioning block 2 under the action of gravity until the lower positioning block 3 is pressed against the pressure-bearing base 91, the lower positioning block 3 is fixed, the pressure head 92 continues to press the upper positioning block 2 downwards, the upper positioning block 2 presses the bearing outer ring arranged on the upper positioning block into a hole at the upper end of the bearing hole seat 8, meanwhile, the bearing hole seat 8 is pressed downwards, and the bearing outer rings on the lower positioning blocks 3 are pressed into the orifices at the lower end of the bearing hole seat 8, so that the press-fitting work of the two bearing outer rings at the orifices at two ends of the bearing hole seat 8 is completed. After the press-fitting work is finished, the axial locking mechanism is released, the positioning structure on the upper positioning block 2 is released, the guide rod 1 is taken with the upper positioning block 2 to be pulled out from the upper surface, and then the lower positioning block 3 is taken away, so that the operation is convenient.

The press-fitting positioning device can simultaneously press-fit two bearing outer rings, realizes pre-fitting positioning before press-fitting, and ensures stable position between the bearing outer rings and the bearing hole seat 8 in the press-fitting process, thereby ensuring the press-fitting quality of the bearing outer rings.

Referring to fig. 1, the utility model is further illustrated in one embodiment as follows:

in the present invention, the shapes of the upper positioning surface 21 and the lower positioning surface 31 are set according to the type of the bearing outer ring, and in the present embodiment, referring to fig. 1, the upper positioning surface 21 and the lower positioning surface 31 are both conical surfaces, which are used for press-fitting and positioning of the bearing outer ring of the conical rolling bearing. For the outer bearing ring of the cylindrical roller bearing, the upper locating surface 21 and the lower locating surface 31 are correspondingly cylindrical surfaces.

In the present embodiment, referring to fig. 1, as a preferred design, the axial locking mechanism includes a locking groove 6 opened on the lower end peripheral surface of the guide rod 1, and a locking pin 7 installed in the lower positioning block 3 and extending into the through hole 32, the locking groove 6 includes an axial groove portion 61 extending in the axial direction of the guide rod 1, and a circumferential groove portion 62 connected to the upper end of the axial groove portion 61 and extending in the circumferential direction of the guide rod 1, and the locking pin 7 is sized to fit the widths of the circumferential groove portion 62 and the axial groove portion 61 and can be inserted into the axial groove portion 61 and the circumferential groove portion 62. During the use, pass through the through-hole 32 of lower locating piece 3 with guide bar 1 lower extreme to keep the stop pin 7 to aim at axial slot part 61, stop pin 7 enters into axial slot part 61, rotates guide bar 1 again when stop pin 7 reachs locking groove 6 upper end, stop pin 7 slides in circumference slot part 62, and lower locating piece 3 and guide bar 1 are restricted at axial position this moment, with this realization axial locking between them, lower locating piece 3 can not drop in the pressure equipment in-process. After the press-fitting operation is completed, the guide rod 1 is rotated until the locking pin 7 is located in the axial groove 61, and then the guide rod 1 is pulled upwards, so that the press-fitting positioning device is convenient to disassemble and assemble when in use. Further, the lower end opening of the axial groove portion 61 is gradually widened from top to bottom to form a bell mouth shape, so as to be conveniently aligned with the locking pin 7 and guide the locking pin 7 to enter the axial groove portion 61. In some cases, the locking pin 7 may be movably disposed, and the locking groove 6 may have a circumferential groove portion 62, and the locking pin 7 may be adjusted to be inserted into the circumferential groove portion 62 after the guide bar 1 is inserted into the through hole 32. Of course, in other embodiments, the axial locking mechanism may also adopt other existing structures, and the lower positioning block 3 may also be axially locked on the guide rod 1.

In this embodiment, referring to fig. 1, as a preferred design, the upper positioning block 2 has a positioning cylinder 22 located at the lower end of the upper positioning surface 21, the radius of the positioning cylinder 22 is slightly smaller than the radius of the inner hole of the bearing outer ring and can pass through the bearing outer ring, the circumferential surface of the positioning cylinder 22 is provided with positioning holes, the positioning structure includes a positioning element 5 and a spring, the positioning element 5 has a convex arc guiding surface at the outer side end, and the spring acts on the inner side of the positioning element 5 to make the arc guiding surface extend out of the positioning holes; when the bearing outer ring is placed on the upper positioning surface 21, the lower end of the bearing outer ring is abutted against the upper side of the arc guide surface of the positioning piece 5. The positioning member 5 may be a ball or a round rod. During the use, pass location cylinder 22 with the bearing inner race from the lower extreme, because the end is convex circular arc spigot surface 5 outside, the bearing inner race can extrude circular arc spigot surface when passing location cylinder 22 and make location piece 5 be absorbed in the locating hole, the bearing inner race can stride across location piece 5 and install to locating surface 21, then the locating column stretches out from the locating hole under the spring action, and the circular arc spigot surface supports and leans on at the bearing inner race lower extreme to this fixes a position the bearing inner race on last locating surface 21 and can not fall down. After the press-fitting work is finished, the guide rod 1 is pulled upwards only by force, the outer ring of the bearing can extrude the arc guide surface to enable the positioning piece 5 to be sunk into the positioning hole, the guide rod 1 can be smoothly pulled out, and the press-fitting positioning device can be conveniently and completely separated from a press-fitted bearing. Of course, in other embodiments, the positioning structure may be other existing structure, and the bearing outer ring may be locked on the upper positioning surface 21.

In this embodiment, referring to fig. 1, as a preferred design, the press-fitting positioning device further includes a limit stop 4 fixed on the guide rod 1 and located below the upper positioning block 2, the limit stop 4 is used for blocking the positioning block from sliding out from the lower end of the guide rod 1, and the limit stop 4 can pass through the bearing outer ring, so as not to prevent the guide rod 1 from being removed after the press-fitting work of the bearing outer ring is completed. And limit stop 4 is located the top of locking groove 6, and when lower locating piece 3 upper end and limit stop 4 supported against, stop pin 7 just in time was located the circumference slot part 62 of locking groove 6 to this limit stop 4 can fix a position lower locating piece 3. In addition, the upper end of the guide bar 1 is provided with a limit stop part 11 for stopping the positioning block from sliding out of the upper end of the guide bar 1.

From the above, the press-fitting positioning device in the embodiment has the following advantages: 1. the press-mounting positioning device is convenient to operate, the pre-mounting positioning and press-mounting work of the two bearing outer rings can be simultaneously carried out, the press-mounting efficiency is obviously improved, the assembly quality of the bearing outer rings is ensured, the assembly precision of an assembly is further improved, and the reworking and scrapping of products are reduced; 2. through the axial locking mechanism and the positioning structure in the embodiment, the press-fitting positioning device is more flexible and convenient to disassemble and assemble in positioning press-fitting work, and the working efficiency is further improved.

To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides a pressure equipment positioner of bearing inner race for on locating bearing hole seat (8) with the bearing inner race, its characterized in that: the bearing outer ring positioning device comprises a guide rod (1), an upper positioning block (2), a lower positioning block (3) and an axial locking mechanism, wherein the upper positioning block (2) is sleeved on the guide rod (1) and can freely slide up and down along the guide rod (1), a circle of upper positioning surface (21) used for placing a bearing outer ring is arranged at the lower side of the upper positioning block (2), the upper positioning surface (21) is attached to a raceway of the bearing outer ring, and a positioning structure for locking the bearing outer ring on the upper positioning surface (21) is further arranged on the upper positioning block (2); a through hole (32) for the guide rod (1) to pass through is formed in the lower positioning block (3), a circle of lower positioning surface (31) for placing the bearing outer ring is arranged on the upper side of the lower positioning block (3), and the lower positioning surface (31) is attached to a roller path of the bearing outer ring; the axial locking mechanism is arranged between the lower positioning block (3) and the guide rod (1) shaft and is used for axially locking the lower positioning block (3) on the guide rod (1).

2. A press-fitting positioning device according to claim 1, wherein: axial locking mechanical system is including offering in the global locking groove (6) of guide bar (1) lower extreme and installing and stretching into to penetrating through locking pin (7) in through-hole (32) down in locating piece (3), locking groove (6) are including axial slot part (61) along guide bar (1) axial extension and connect in axial slot part (61) upper end and along the circumference slot part (62) of guide bar (1) circumference extension, locking pin (7) can insert in axial slot part (61) and circumference slot part (62).

3. A press-fitting positioning device according to claim 2, wherein: the lower end opening of the axial groove part (61) is gradually widened from top to bottom.

4. A press-fitting positioning device according to claim 1, wherein: the positioning structure comprises a positioning part (5) and a spring, wherein the positioning cylinder (22) is arranged at the lower end of an upper positioning surface (21) on the upper positioning block (2), the radius of the positioning cylinder (22) is smaller than that of an inner hole of the outer ring of the bearing, the circumferential surface of the positioning cylinder (22) is provided with a positioning hole, the positioning structure comprises a positioning part (5) and the spring, the positioning part (5) is arranged in the positioning hole, the outer side end of the positioning part (5) is provided with a convex arc guide surface, and the spring acts on the inner side of the positioning part (5) to enable the arc guide surface to extend out of the positioning hole; when the bearing outer ring is arranged on the upper positioning surface (21), the lower end of the bearing outer ring is abutted against the upper side of the arc guide surface of the positioning piece (5).

5. A press-fitting positioning device according to claim 1, wherein: the upper positioning surface (21) and the lower positioning surface (31) are conical surfaces and are used for placing a bearing outer ring of the conical rolling bearing.

6. A press-fitting positioning device according to claim 1, wherein: the bearing positioning device is characterized by further comprising a limit stop (4) which is fixed on the guide rod (1) and located below the upper positioning block (2), wherein the limit stop (4) can penetrate through the outer ring of the bearing.

7. A press-fitting positioning device according to claim 6, wherein: the limit stop (4) is in a ring shape and is fixedly sleeved on the guide rod (1).

8. A press-fitting positioning device according to claim 1, wherein: the upper end of the guide rod (1) is provided with a limit stop part (11).

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