Device for detecting radial displacement of conical bearing retainer

Abstract

The utility model relates to the technical field of bearing detection tools, in particular to a radial displacement detection device for a conical bearing retainer, which comprises an annular mold with an inner cavity profiled to an inner cavity of a bearing outer ring, the large opening end of the inner cavity of the annular mold faces upwards, a measuring groove is arranged at one side part of the annular mold, and a mounting piece for fixedly mounting a dial indicator is arranged on the outer side of the measuring groove; conical positioning blocks coaxial with the annular mold are arranged above the annular mold at intervals, and the small head ends of the conical positioning blocks face downwards; the driving device is used for driving the conical positioning block to move in the axial direction; according to the utility model, the structure is simple, the radial positions of the annular die and the conical positioning block are relatively fixed, and the radial displacement of the precise tapered roller bearing retainer can be directly judged quickly and accurately according to the variable quantity displayed on the dial indicator; and the accuracy and the measurement efficiency of the displacement of the assembly retainer in the precise tapered roller bearing are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing tools, and in particular to a device for detecting the radial movement of a tapered bearing cage. Background Technology

[0002] Precision tapered roller bearings can withstand radial loads and unidirectional axial loads, and are widely used in the automotive industry. The radial runout of the cage in precision tapered roller bearings is controlled according to the national standard for stamped cages of rolling bearing parts (JB / T10337-2002). Excessive cage runout can cause quality problems such as abnormal bearing noise; insufficient radial runout can cause bearing jamming. Therefore, controlling the radial runout of the cage is an important indicator in the inspection of finished bearings.

[0003] Currently, the radial runout of the cage in precision tapered roller bearings is measured using a magnetic dial indicator stand and a dial indicator. During testing, the large cross-section of the inner ring of the precision tapered roller bearing is placed on a platform, with the large end face of the outer ring facing upwards. The dial indicator is positioned on the outer diameter side of the cage, and the cage is moved; the change in the dial indicator value indicates the cage's runout. This method is prone to measurement errors due to the non-fixed nature of the precision tapered roller bearing, makes batch control impossible, and is time-consuming and labor-intensive.

[0004] To address this, we designed a device for detecting the radial runout of a tapered bearing cage. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model discloses a device for detecting the radial movement of a tapered bearing cage.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] A device for detecting radial runout of a tapered bearing cage includes an annular mold whose inner cavity is shaped to the inner cavity of the outer ring of the bearing. The larger end of the inner cavity of the annular mold faces upward and a measuring groove is provided on one side. An mounting component for fixing a dial indicator is provided on the outside of the measuring groove. Tapered positioning blocks are spaced apart above the annular mold and are coaxial with it, with the smaller end of the tapered positioning blocks facing downward.

[0008] It also includes a drive device for driving the conical positioning block to move axially.

[0009] Preferably, the cone angle of the cone-shaped positioning block is 80 to 110 degrees.

[0010] Preferably, it further includes a mounting structure for mounting the drive device fixing part and the annular mold.

[0011] Preferably, the mounting structure includes a base plate, the annular mold is disposed at one end of the top surface of the base plate, the other end of the base plate is provided with an upwardly extending mounting bracket, and the top of the mounting bracket is provided with an extension extending to the top of the conical positioning block.

[0012] Preferably, the bottom of the annular mold is provided with a flange plate, which is connected to the top surface of the base plate by a locating pin and / or bolts.

[0013] Preferably, the annular mold has a vertical surface on one side of the outer wall corresponding to the measuring groove, and the mounting component is fitted and installed on the vertical surface accordingly.

[0014] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0015] 1. The structure is simple, with the radial positions of the annular mold and the conical positioning block being relatively fixed. It can quickly and accurately determine the radial movement of the precision tapered roller bearing cage based on the changes displayed on the dial indicator, effectively improving the accuracy and measurement efficiency of the movement of the cage of the internal components of the precision tapered roller bearing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is the right view of the present invention;

[0018] Figure 3 for Figure 2 AA sectional view.

[0019] In the figure: 1. Annular mold; 11. Measuring groove; 12. Flange plate; 13. Vertical surface; 2. Dial indicator; 3. Mounting component; 4. Conical positioning block; 5. Drive device; 6. Base plate; 7. Mounting bracket; 71. Extension. Detailed Implementation

[0020] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0021] Combined with appendix Figure 1-3 A device for detecting radial runout of a tapered bearing cage includes an annular mold 1 whose inner cavity is modeled after the inner cavity of the bearing outer ring. In other words, the angle and size of the inner cavity of the annular mold 1 are designed according to the bearing outer ring.

[0022] The inner cavity of the ring mold 1 has its large opening facing upwards, and a measuring groove 11 is provided on one side. As needed, the measuring groove 11 can be a round hole or a U-shaped hole with an open upper end.

[0023] The outer side of the measuring groove 11 is provided with a mounting part 3 for fixing and installing the dial indicator 2; as needed, the annular mold 1 is provided with a vertical surface 13 on one side of the outer wall corresponding to the measuring groove 11, and the mounting part 3 is fitted and installed on the vertical surface 13 accordingly; as needed, the mounting part 3 is connected to the vertical surface 13 by bolts.

[0024] The ring mold 1 is provided with conical positioning blocks 4 on the same axis, with the small end of the conical positioning blocks 4 facing downward.

[0025] In this example, the dimensions of the tapered locating block are determined based on the inner diameter of the bearing's inner ring. Specifically, the diameter of the small end of the tapered locating block 4 is smaller than the inner diameter of the bearing's inner ring, while the diameter of the large end of the tapered locating block 4 is larger than the inner diameter of the bearing's inner ring. Depending on the requirements, the cone angle of the tapered locating block 4 is 80~110 degrees; preferably, the cone angle is 90 degrees.

[0026] It also includes a drive device 5 for driving the conical positioning block 4 to move axially.

[0027] Depending on the requirements, the drive unit 5 may be a telescopic device, such as a cylinder. For example, the drive unit 5 may use a small cylinder with a stroke of 50 mm.

[0028] Furthermore, it also includes a mounting structure for mounting the drive unit 5 fixing part and the annular mold 1; the mounting structure includes a base plate 6, the annular mold 1 is located at one end of the top surface of the base plate 6, and the other end of the base plate 6 is provided with an upwardly extending mounting bracket 7, the top of the mounting bracket 7 is provided with an extension 71 extending to the top of the tapered positioning block 4; this arrangement allows the drive unit 5 and the annular mold 1 to be relatively fixed in position through the mounting structure, so for the same type of tapered bearing, there is no need to calibrate the coaxiality of the annular mold 1 and the tapered positioning block 4 every time it is used, thereby effectively improving the testing efficiency.

[0029] Furthermore, the bottom of the annular mold 1 is provided with a flange plate 12, which is connected to the top surface of the base plate 6 by locating pins and / or bolts. Preferably, the flange plate 12 is positioned by locating pins and fixed to the top surface of the base plate 6 by bolts.

[0030] In use, after the qualified assembly of the precision tapered roller bearing inner components is press-fitted, it is placed in the inner cavity of the annular mold 1. At this time, the measuring end of the dial indicator 2 is in contact with the top of the outer ring surface of the cage. Then, the drive device 5 is started. The drive device 5 drives the tapered positioning block 4 to descend, so that the tapered positioning block 4 presses down and fixes the tapered roller bearing. Then, the cage is moved radially along the measuring direction of the dial indicator 2. At this time, the change shown on the dial indicator 2 is the radial movement of the precision tapered roller bearing cage.

[0031] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.

Claims

1. A device for detecting radial runout of a tapered bearing cage, characterized in that: The annular mold (1) has an inner cavity that is modeled after the inner cavity of the outer ring of the bearing. The large end of the inner cavity of the annular mold (1) faces upward and a measuring groove (11) is provided on one side. An mounting part (3) for fixing and installing a dial indicator (2) is provided on the outside of the measuring groove (11). A conical positioning block (4) is provided at intervals above the annular mold (1) and is coaxial with it. The small end of the conical positioning block (4) faces downward. It also includes a drive device (5) for driving the conical positioning block (4) to move axially.

2. The device for detecting radial movement of a tapered bearing cage according to claim 1, characterized in that: The cone angle of the cone-shaped positioning block (4) is 80~110 degrees.

3. The device for detecting radial movement of a tapered bearing cage according to claim 1, characterized in that: It also includes a mounting structure for mounting the drive unit (5) fixing part and the ring mold (1).

4. The device for detecting radial movement of a tapered bearing cage according to claim 3, characterized in that: The mounting structure includes a base plate (6), the annular mold (1) is located at one end of the top surface of the base plate (6), and the other end of the base plate (6) is provided with an upwardly extending mounting bracket (7). The top of the mounting bracket (7) is provided with an extension (71) extending to the top of the conical positioning block (4).

5. The device for detecting radial movement of a tapered bearing cage according to claim 4, characterized in that: The bottom of the annular mold (1) is provided with a flange plate (12), which is connected to the top surface of the base plate (6) by a positioning pin and / or bolts.

6. The device for detecting radial movement of a tapered bearing cage according to claim 1, characterized in that: The annular mold (1) has a vertical surface (13) on one side of the outer wall corresponding to the measuring groove (11), and the mounting part (3) is fitted and installed on the vertical surface (13).

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