Tool for detecting axial run-out of roller pin and bidirectional thrust cylindrical roller combination bearing
By designing a testing tool that includes preloading application components and fastening structures, the difficulty of axial jump detection of needle roller and bidirectional thrust cylindrical roller combination bearings is solved, and fast and accurate inspection results are achieved to ensure product quality.
Patent Information
- Application Number
- CN202422148240.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-03
AI Technical Summary
It is difficult to detect the axial jump of the needle roller and bidirectional thrust cylindrical roller combination bearings, and the detection data is inaccurate and the efficiency is low.
A detection tool including a preloading force application assembly, a fastening structure, a seat plate and a base is designed, and the bearing to be tested is fixed by a rotating rod, a compression nut and a shaft, and axial jump detection is performed using a dial meter measuring head.
It realizes fast and accurate axial jump detection, ensures product quality, is simple in structure, low in cost and convenient operation.
Smart Images
Figure CN223064513U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bearing detection, and particularly relates to a tooling for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing. Background Art
[0002] Due to the relatively complex bearing structure of the combined needle roller and double-direction thrust cylindrical roller bearing, and the need to apply a pre-tightening force to detect its axial runout, it is difficult to accurately detect the axial runout of the bearing, the detection data is not accurate enough, and the detection efficiency is not high at the same time. Summary of the Utility Model
[0003] According to the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a tooling for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing, which can quickly detect the runout of the end face of the combined needle roller and double-direction thrust cylindrical roller bearing and ensure the product quality.
[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a tooling for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing, including a pre-tightening force applying component, a fastening structure, a seat plate and a base; the pre-tightening force applying component is limited on the seat plate; the pre-tightening force applying component is pressed on the seat plate through the fastening structure; the seat plate is limited on the base; the base is placed on a horizontal plane; the pre-tightening force applying component includes a rotating rod, a pressing nut, a shaft and a bearing to be measured; one end of the pressing nut is connected to the rotating rod; the other end of the pressing nut is connected to the shaft; the shaft is sleeved with the bearing to be measured; the bearing to be measured is fixed by the pressing nut and the shaft.
[0005] Further, the bearing to be measured includes a first shaft seat, a needle roller outer ring and a second shaft seat; the needle roller outer ring is placed between the first shaft seat and the second shaft seat; the end face of the first shaft seat is in contact with the pressing nut; the end face of the second shaft seat is in contact with the shaft; the second shaft seat passes through the seat plate; the needle roller outer ring is limited on the seat plate.
[0006] Further, the seat plate is a hollow cylinder; the needle roller outer ring is fixed on the seat plate through the fastening structure.
[0007] Further, the shaft is composed of an upper shaft part, a middle shaft part and a lower shaft part; the upper shaft part is a cylinder; the middle shaft part is a cylinder; the lower shaft part is a cylinder with notches on both sides; the diameter of the cylinder of the upper shaft part is smaller than the diameter of the cylinder of the middle shaft part; the diameter of the cylinder of the middle shaft part is smaller than the diameter of the cylinder of the lower shaft part; the diameter of the cylinder of the lower shaft part is larger than the inner diameter of the second shaft seat.
[0008] Further, it further includes fastening bolts. The fastening structure is provided with threaded through holes on both hollow sides close to the seat plate; the fastening bolts are matched with the threaded through holes.
[0009] Further, the outer periphery of the upper shaft portion is provided with threads; the upper shaft portion is threadedly connected with the compression nut.
[0010] Further, the end of the measuring head of the dial indicator abuts against the end face of the bearing to be measured.
[0011] The beneficial effects of the present utility model are as follows: The detection device of the present utility model has a simple structure, low cost, saves space, is convenient to operate, effectively makes up for the problem of difficult detection of the end face of the needle roller and double-direction thrust cylindrical roller combined bearing, performs runout detection on the axial direction of the needle roller and double-direction thrust cylindrical roller combined bearing, and the detection result is accurate and reliable, which can effectively ensure the product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic structural diagram of the present utility model;
[0013] Figure 2 is a schematic structural diagram of the bearing to be measured of the present utility model;
[0014] Figure 3 is a schematic structural diagram of the shaft of the present utility model;
[0015] In the figure: 1, rotating rod; 2, compression nut; 3, shaft; 4, bearing to be measured; 5, fastening bolt; 6, seat plate; 7, base; 8, first shaft seat; 9, needle roller outer ring; 10, second shaft seat; 11, upper shaft portion; 12, middle shaft portion; 13, lower shaft portion. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] In order to make the structure and function of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0017] Referring to the accompanying drawings, a tooling for detecting the axial runout of a needle roller and double-direction thrust cylindrical roller combined bearing includes a pre-tightening force applying assembly, a fastening structure, a seat plate 6 and a base 7; the pre-tightening force applying assembly is limited on the seat plate 6; the pre-tightening force applying assembly is pressed on the seat plate 6 through the fastening structure; the seat plate 6 is limited on the base 7; the base 7 is placed on a horizontal plane; the pre-tightening force applying assembly includes a rotating rod 1, a compression nut 2, a shaft 3 and a bearing to be measured 4; one end of the compression nut 2 is connected with the rotating rod 1; the other end of the compression nut 2 is connected with the shaft 3; the shaft is sleeved with the bearing to be measured 4; the bearing to be measured 4 is fixed by the compression nut 2 and the shaft.
[0018] Further, the bearing 4 to be measured includes a first shaft seat 8, a needle roller outer ring 9, and a second shaft seat 10; the needle roller outer ring 9 is placed between the first shaft seat 8 and the second shaft seat 10; the end face of the first shaft seat 8 is in contact with the compression nut 2; the end face of the second shaft seat 10 is in contact with the shaft 3; the second shaft seat 10 passes through the seat plate 6; the needle roller outer ring 9 is limited on the seat plate 6.
[0019] It should be noted that the needle roller and double-direction thrust cylindrical roller combined bearing shown in this embodiment is only one of them, and is not limited to only detecting this one kind of needle roller and double-direction thrust cylindrical roller combined bearing.
[0020] Further, the seat plate 6 is a hollow cylinder; the needle roller outer ring 9 is fixed on the seat plate 6 through a fastening structure.
[0021] Further, the shaft 3 is composed of an upper shaft part 11, a middle shaft part 12, and a lower shaft part 13; the upper shaft part 11 is a cylinder; the middle shaft part 12 is a cylinder; the lower shaft part 13 is a cylinder with notches on both sides; the diameter of the cylinder of the upper shaft part 11 is smaller than the diameter of the cylinder of the middle shaft part 12; the diameter of the cylinder of the middle shaft part 12 is smaller than the diameter of the cylinder of the lower shaft part 13; the diameter of the cylinder of the lower shaft part 13 is larger than the inner diameter of the second shaft seat 10.
[0022] Further, it further includes a fastening bolt 5, and the fastening structure is provided with threaded through holes on both hollow sides close to the seat plate 6; the fastening bolt 5 is matched with the threaded through holes.
[0023] Further, the outer periphery of the upper shaft part 11 is provided with threads; the upper shaft part 11 is threadedly connected with the compression nut 2.
[0024] It should be noted that the diameter of the middle shaft part of the shaft is 60 mm, the diameter of the base is 230 mm, the height of the base is 130 mm, and the length of the rotating rod is 160 mm.
[0025] Further, the end of the measuring head of the dial indicator abuts against the end face of the bearing 4 to be measured.
[0026] It should be noted that when detecting the axial runout of the bearing, fix the shaft 3, install the bearing 4 to be measured, use a torque wrench to rotate the compression nut 2 to load the bearing 4 to be measured to the rated preload force. After fixing the assembled bearing on the seat plate 6 with the fastening bolt 5, place the dial indicator head on the end face of the bearing 4 to be measured, and rotate the rotating rod 1 to achieve the purpose of measuring the axial runout.
[0027] The above are only the preferred embodiments of the present utility model. Obviously, the present utility model is not limited to the above embodiments and there can be many variations. All variations that can be directly derived or associated by those of ordinary skill in the art from the disclosed content of the present utility model shall be considered as the protection scope of the present utility model.
Claims
1. A tooling for detecting the axial runout of a needle roller and double-direction thrust cylindrical roller combined bearing, characterized in that: It includes a pre-tightening force applying component, a fastening structure, a seat plate and a base; the pre-tightening force applying component is limited on the seat plate; the pre-tightening force applying component is pressed on the seat plate through the fastening structure; the seat plate is limited on the base; the base is placed on a horizontal plane; the pre-tightening force applying component includes a rotating rod, a pressing nut, a shaft and a bearing under test; one end of the pressing nut is connected to the rotating rod; the other end of the pressing nut is connected to the shaft; the shaft is sleeved with the bearing under test; the bearing under test is fixed by the pressing nut and the shaft.
2. The tooling for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing according to claim 1, characterized in that: The bearing under test includes a first shaft seat, a needle roller outer ring and a second shaft seat; the needle roller outer ring is placed between the first shaft seat and the second shaft seat; the end face of the first shaft seat contacts the pressing nut; the end face of the second shaft seat contacts the shaft; the second shaft seat passes through the seat plate; the needle roller outer ring is limited on the seat plate.
3. The tooling for detecting the axial runout of a combined needle roller and double direction thrust cylindrical roller bearing according to claim 2, wherein: The seat plate is a hollow cylinder; the needle roller outer ring is fixed on the seat plate through the fastening structure.
4. A fixture for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing according to any one of claims 1-3, characterized in that: The shaft is composed of an upper shaft part, a middle shaft part and a lower shaft part; the upper shaft part is a cylinder; the middle shaft part is a cylinder; the lower shaft part is a cylinder with notches on both sides; the diameter of the cylinder of the upper shaft part is smaller than the diameter of the cylinder of the middle shaft part; the diameter of the cylinder of the middle shaft part is smaller than the diameter of the cylinder of the lower shaft part; the diameter of the cylinder of the lower shaft part is larger than the inner diameter of the second shaft seat.
5. The fixture for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing according to claim 4, wherein: It also includes fastening bolts. The fastening structure is provided with threaded through holes on both hollow sides close to the seat plate; the fastening bolts are matched with the threaded through holes.
6. The fixture for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing according to claim 5, wherein: The outer periphery of the upper shaft part is provided with threads; the upper shaft part is threadedly connected to the pressing nut.
7. The fixture for detecting the axial runout of a combined needle roller and double-direction thrust cylindrical roller bearing according to claim 1, wherein: The measuring head end of the dial indicator abuts against the end face of the bearing under test.