Amplitude and height difference detection device for two-row ball bearing

Abstract

A double-row ball bearing amplitude height difference detection device comprises a bottom plate, a base and a guide column are connected to the bottom plate, a positioning hole is machined in the middle of the base, a double-row ball bearing to be detected is arranged on the positioning hole, a connecting shaft is arranged in the middle of the double-row ball bearing, and a step is machined at one end of the connecting shaft to block the double-row ball bearing. A balancing weight is arranged at the upper end of the connecting shaft, the balancing weight is pressed on the connecting shaft to provide pressure, a lifting seat is arranged on the guide column, a dial indicator is installed on the lifting seat, a connecting sleeve is installed on a measuring head of the dial indicator, an extension support is connected to the side face of the connecting sleeve, and the extension support is connected with the guide column. The end portion of the extension support is connected with a measuring needle which abuts against the end face of the inner ring of the two-row ball bearing. According to the utility model, the inner ring of the bearing moves relative to the outer ring through downward pressing of the balancing weight, the amplitude height difference can be obtained by using the dial indicator to detect the amplitude height, and the device has the characteristics of convenience in disassembly and assembly and rapidness in detection, and meets the requirements of production detection.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a double-row ball bearing amplitude difference detection device. Background Art

[0002] A double-row ball bearing includes an outer ring, and two inner rings are arranged inside the outer ring. The axial movement between the inner ring and the outer ring is called the amplitude difference. At present, double-row ball bearings are widely used in mechanical industries such as automobiles. The amplitude difference requirements for such bearings are very strict because the amplitude difference has a great influence on the performance of the bearings, such as fatigue life, rotation accuracy, temperature rise, and noise. Therefore, it is particularly important to detect and control the amplitude difference of the final products of such bearings. In the case of mass production, the existing instruments cannot meet the requirements of rapid detection. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a double-row ball bearing amplitude difference detection device aiming at the deficiencies of the above-mentioned prior art.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is:

[0005] A double-row ball bearing amplitude difference detection device includes a bottom plate, on which a base and guide posts are connected. A positioning hole is processed in the middle of the base, and a double-row ball bearing to be measured is arranged on the positioning hole. A connecting shaft is arranged in the middle of the double-row ball bearing. One end of the connecting shaft is processed with a step to block the double-row ball bearing, and the other end is connected with a locking nut to lock the double-row ball bearing. A counterweight is arranged at the upper end of the connecting shaft, and the counterweight presses on the connecting shaft to provide pressure. A lifting seat is arranged on the guide posts, and a dial indicator is installed on the lifting seat. A connecting sleeve is installed on the measuring head of the dial indicator. An extension bracket is connected to the side of the connecting sleeve, and a measuring needle is connected to the end of the extension bracket. The measuring needle abuts against the end face of the inner ring of the double-row ball bearing.

[0006] Further, connecting holes are processed at both ends of the counterweight.

[0007] Further, arc-shaped notches for avoiding the measuring needle are processed on the step end of the connecting shaft and the locking nut.

[0008] Further, the side of the lifting seat is connected to the guide post through a set screw.

[0009] Compared with the prior art, for the double-row ball bearing amplitude difference detection device of the utility model, through the downward pressure of the counterweight, the inner ring of the bearing moves relative to the outer ring, and the amplitude difference can be obtained by using the dial indicator to detect the amplitude. This device has the characteristics of convenient disassembly and assembly and rapid detection, and meets the requirements of production detection. Description of the Drawings

[0010] Figure 1is a schematic structural diagram of the present utility model;

[0011] Figure 2 is a schematic diagram of the state for detecting the amplitude difference of a double-row ball bearing of the present utility model;

[0012] Among them, 1. base plate, 2. base, 3. guide post, 4. positioning hole, 5. double-row ball bearing, 6. connecting shaft, 7. locking nut, 8. counterweight, 9. connecting hole, 10. lifting seat, 11. dial indicator, 12. connecting sleeve, 13. extension bracket, 14. measuring probe. Specific embodiments

[0013] The technical solutions in the embodiments of the present utility model will be clearly and completely described below.

[0014] As Figure 1 shown, a device for detecting the amplitude difference of a double-row ball bearing includes a base plate 1, on which a base 2 and a guide post 3 are connected. A positioning hole 4 is machined in the middle of the base 2. The positioning hole 4 is a stepped hole for installing the bearing and accommodating the connecting shaft. A double-row ball bearing 5 to be measured is arranged on the positioning hole 4. A connecting shaft 6 is arranged in the middle of the double-row ball bearing 5. One end of the connecting shaft 6 is machined with a step to block the double-row ball bearing 5, and the other end is connected with a locking nut 7 to lock the double-row ball bearing 5. A counterweight 8 is arranged at the upper end of the connecting shaft 6. The counterweight 8 presses on the connecting shaft 6 to provide pressure. Among them, connecting holes 9 are machined at both ends of the counterweight 8, and the connecting holes 9 are sleeved on the upper part of the connecting shaft 6.

[0015] A lifting seat 10 is arranged on the guide post 3. The lifting seat 10 slides on the guide post 3 and is connected and fixed to the guide post 3 by a set screw on its side. A dial indicator 11 is installed on the lifting seat 10. A connecting sleeve 12 is installed on the measuring head of the dial indicator 11. An extension bracket 13 is connected to the side of the connecting sleeve 12, and a measuring probe 14 is connected to the end of the extension bracket 13. The measuring probe 14 abuts against the inner ring end face of the double-row ball bearing 5.

[0016] In this embodiment, the outer shape of the locking nut 7 is circular. An arcuate notch for avoiding the measuring probe 14 is machined on the locking nut 7 and the stepped end of the connecting shaft 6. Connecting hole one and connecting hole two are respectively machined at both ends of the counterweight 8. Connecting hole one is sleeved outside the locking nut end of the connecting shaft 6, and connecting hole two is sleeved outside the stepped end of the connecting shaft 6.

[0017] As Figure 1 and Figure 2As shown in the figure, the double-row ball bearing 5 is installed on the connecting shaft 6 and locked by a lock nut 7. One end of the connecting shaft 6 is inserted into the positioning hole 4 of the base 2. The double-row ball bearing 5 is arranged at the upper end of the positioning hole 4. Adjust the position of the lifting seat 10 so that the probe 14 is aligned with the end face of the inner ring. Press the counterweight 8 on the connecting shaft 6. Read the amplitude height difference according to the dial indicator 11. Then remove the counterweight 8. Insert the other end of the connecting shaft 6 into the positioning hole 4 of the base 2 and measure the amplitude height difference of the other inner ring.

[0018] The present utility model is not limited to the described embodiments. Those skilled in the art can still make some modifications or changes without departing from the spirit of the present utility model, that is, within the scope of the disclosure. Therefore, the scope of the protection of the present utility model shall be subject to the scope defined by the claims.

Claims

1. A double-row ball bearing height difference detection device, characterized in that: It includes a bottom plate, which is connected to a base and a guide column. A positioning hole is processed in the middle of the base, and a double-row ball bearing to be tested is arranged on the positioning hole. A connecting shaft is arranged in the middle of the double-row ball bearing, one end of the connecting shaft is processed with a step to block the double-row ball bearing, and the other end is connected to a locking nut to lock the double-row ball bearing. A counterweight block is arranged on the upper end of the connecting shaft, and the counterweight block is pressed on the connecting shaft to provide pressure. A lifting seat is arranged on the guide column, and a micrometer is installed on the lifting seat. A connecting sleeve is installed on the probe of the micrometer, and an extension bracket is connected to the side of the connecting sleeve. A measuring needle is connected to the end of the extension bracket, and the measuring needle rests on the end face of the inner ring of the double-row ball bearing.

2. A double-row ball bearing height difference detection device according to claim 1, characterized in that: Both ends of the counterweight block are processed with connecting holes.

3. A double-row ball bearing height difference detection device according to claim 1, characterized in that: The step end of the connecting shaft and the locking nut are processed with an arched notch for avoiding the measuring needle.

4. A double-row ball bearing height difference detection device according to claim 1, characterized in that: The side surface of the lifting seat is connected with the guide column through a set screw.

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