Double-groove bearing radial clearance detection tool

Abstract

The utility model provides a radial clearance detection tool for a double-groove bearing. The radial clearance detection tool comprises a base; the vertical plate is arranged in the center of the top end of the base through bolt connection, a threaded hole is formed in the center of the vertical plate, the top of the vertical plate is connected with the measuring frame through bolts, and a through hole is formed in the side, away from the vertical plate, of the measuring frame; the torsion spring comparator is connected and arranged in the through hole in a penetrating manner through a bolt; the bearing sleeving locking module is arranged in a threaded hole in the center of the vertical plate in a penetrating mode through thread fit. According to the utility model, the pedestal, the vertical plate, the torsion spring comparator, the bearing sleeve locking module and the measurement module are adopted, so that the beneficial effects are achieved as follows: the detection tool is simple in structure, relatively light in overall weight, and capable of being placed and arranged back and forth in a production field and a laboratory; operation is simple and detection efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing, and in particular to the field of bearing radial clearance testing technology, specifically a tooling for testing the radial clearance of a double-groove bearing. Background Technology

[0002] After the twin groove bearing is assembled, the radial clearance of the bearing needs to be tested. If the radial clearance is too large, the load will be concentrated on a few rolling elements, which will significantly increase the contact stress and accelerate material fatigue. If the radial clearance is too small, it will easily cause friction and temperature rise, which will aggravate the degradation of lubrication performance.

[0003] Patent No. CN101363727A discloses a bearing radial clearance detection device, characterized by including a frame and an electrical control system. A lifting mechanism is installed on the top of the frame. One end of a mandrel used to position the inner ring of the bearing under test is connected to the lifting mechanism. A lower mold device for placing the bearing under test is mounted on the frame below the mandrel. A front spring-loaded mechanism and a rear spring-loaded mechanism for pushing the outer ring of the bearing under test are respectively mounted on the front and rear sides of the frame. A measuring pen that contacts the outer ring of the bearing under test is mounted on the frame via a bracket. Its overall structure is relatively complex and bulky, difficult to maintain, has high maintenance costs, and is not easy to place on the production site.

[0004] Patent CN113532238A discloses a bearing radial clearance detection device, characterized by a base, on which a mounting component for connecting to the bearing mandrel under test is provided. A positioning groove is provided on one side of the mounting component on the base, and a positioning rod is provided in the positioning groove along the height direction. A connecting seat is slidably mounted on the positioning rod along the height direction, and a connecting rod is provided on the connecting seat. A test rod is slidably mounted at the end of the connecting rod, and a dial indicator is rotatably connected to the connecting rod. While its structure is simple and portable, the additional load required for testing is often applied by technicians pushing and pressing the bearing outer ring. Novice technicians cannot accurately control the force applied each time, resulting in low testing accuracy. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a radial clearance detection tool for double groove bearings to solve the difficulties of the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a fixture for detecting the radial clearance of a double-groove bearing, comprising:

[0007] Base 1;

[0008] The upright plate 2 is bolted to the center of the top of the base 1. A threaded hole is provided in the center of the upright plate 2. A measuring frame 3 is bolted to the top of the upright plate 2. A through hole is provided on the side of the measuring frame 3 away from the upright plate 2.

[0009] Torsion spring comparator 4, which is bolted through the through hole;

[0010] The bearing set locking module 5 is threadedly inserted into the threaded hole in the center of the vertical plate 2;

[0011] Measurement module 6 is bolted to the top of base 1, directly below torsion spring comparator 4.

[0012] According to the preferred embodiment, the bearing assembly locking module 5 includes:

[0013] The mandrel 51 has a threaded step 513 on one side, which is fitted into a threaded hole on one side. The other side of the threaded step 513 extends through the vertical plate 2 in a direction away from the torsion spring comparator 4. A bearing sleeve groove 511 is provided on the side of the mandrel 51 close to the torsion spring comparator 4.

[0014] Locking hole 512, the locking hole 512 is opened through the center of the spindle 51, and the center of the locking hole 512 is a threaded section;

[0015] Nut 52, the nut 52 is threadedly fitted on the side of the threaded step 513 away from the torsion spring comparator 4, and one end of the nut 52 abuts against the vertical plate 2;

[0016] A locking rod 53 is threaded through the locking hole 512 in the center. A locking plate 54 is mounted on the side of the locking rod 53 near the torsion spring comparator 4. The locking plate 54 has an insertion hole in the center. The diameter of the insertion hole is larger than the maximum outer diameter of the locking rod 53. The locking plate 54 is fitted onto the locking rod 53 through the insertion hole. One end of the locking plate 54 abuts against the end face of the spindle 51 away from the nut 52. A handle 55 is threadedly fitted on the side of the locking rod 53 near the nut 52.

[0017] According to the preferred embodiment, the maximum outer diameter of the threaded step 513 on one side of the mandrel 51 and the outer diameter of the bearing sleeve groove 511 on the other side are smaller than the outer diameter of the middle section.

[0018] According to the preferred embodiment, a locking nut 514 is provided at the top center of the spindle 51 near the side of the upright plate 2, and the locking nut 514 enters vertically downward into the locking hole 512 and abuts against the outer wall of the locking rod 53.

[0019] According to the preferred embodiment, the measurement module 6 includes:

[0020] Measuring base 61, which is bolted to the top of base 1 and located directly below torsion spring comparator 4;

[0021] Bearing 62, wherein the outer ring of bearing 62 is interference-fitted and mounted on the top of measuring seat 61, and the inner ring of bearing 62 is interference-fitted and mounted on a top head 63;

[0022] Wrench 64 is bolted to the outside of the inner ring of bearing 62.

[0023] According to the preferred embodiment, the top end face of the top head 63 is inclined.

[0024] According to a preferred embodiment, the height of one side of the top head 63 is less than the height of the other side.

[0025] This utility model employs a base, a vertical plate, a torsion spring comparator, a bearing set locking module, and a measuring module. The locking rod is screwed into the locking hole of the mandrel. The mandrel is then screwed into the threaded hole in the center of the vertical plate until the protruding part in the middle of the mandrel abuts against the vertical plate. The nut is then tightened onto the mandrel. A handle is screwed onto the locking rod. A standard bearing is inserted into the bearing groove on one side of the mandrel. A locking plate is fitted onto the locking rod. The handle is rotated downwards by 15–60°, and the locking nut is tightened to limit the test piece by the locking plate. The torsion spring comparator is placed in the through hole, with the bottom probe of the comparator contacting the outer diameter of the test piece. Once the instrument pointer is near 0, the torsion spring comparator is limited by the nut. Rotating the wrench left and right changes the height of the tip against the bottom of the test piece. The radial clearance of the test piece is obtained by adding the maximum and minimum distances from the 0 mark on the torsion spring comparator. This achieves the following beneficial effects:

[0026] 1. The inspection tool has a simple structure and is relatively lightweight, allowing it to be placed and arranged between the production site and the laboratory;

[0027] 2. Simple operation and high detection efficiency.

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0029] Figure 1 The diagram shown is a structural schematic of this utility model.

[0030] Figure 2 The diagram shown is a structural schematic of the mandrel in this utility model.

[0031] Figure 3 The diagram shown is a structural schematic of the measurement module in this utility model.

[0032] Figure 4 The diagram shown is a structural diagram of this utility model.

[0033] Label Explanation

[0034] 1. Base;

[0035] 2. Erecting board;

[0036] 3. Measuring frame;

[0037] 4. Torsion spring comparator;

[0038] 5. Bearing assembly locking module;

[0039] 51. Mandrel; 511. Bearing sleeve groove; 512. Locking hole; 513. Threaded step; 514. Locking nut; 52. Nut; 53. Locking rod; 54. Locking plate; 55. Handle;

[0040] 6. Measurement module;

[0041] 61. Measuring base; 62. Bearing; 63. Mandrel; 64. Wrench; Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0043] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0044] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0045] This utility model proposes a radial clearance detection fixture for double-groove bearings, which is used in bearing inspection processes. This utility model does not limit the type of bearing to be inspected, but the structure of the base 1, the upright plate 2, the torsion spring comparator 4, the bearing set locking module 5, and the measuring module 6 is particularly suitable for radial bearing inspection.

[0046] In general, the radial clearance detection fixture for double-groove bearings proposed in this utility model mainly includes: a base 1, a vertical plate 2, a torsion spring comparator 4, a bearing assembly locking module 5, and a measuring module 6. (See also...) Figure 1 It shows the arrangement of the base 1, the upright plate 2, the torsion spring comparator 4, the bearing set locking module 5, and the measuring module 6.

[0047] The radial clearance testing fixture for double-groove bearings proposed in this utility model requires that the outer diameter of the bearing sleeve groove 511 side of the selected mandrel 51 be the same as the inner diameter of the bearing in the batch to be tested. During installation, first return the wrench 64 to the 0 position, then screw the locking rod 53 into the locking hole 512 of the mandrel 51. Screw the mandrel 51 into the threaded hole in the center of the vertical plate 2 until the protruding part in the middle of the mandrel 51 abuts against the vertical plate 2. Tighten the nut 52 onto the mandrel 51, screw the handle 55 onto the locking rod 53, and finally insert a standard bearing into the bearing sleeve groove 511 side of the mandrel 51. Insert the locking plate 54 onto the locking rod 53, rotate the handle 55 downwards by 15-60°, and tighten the locking nut 514 to limit the test piece by the locking plate 54. Place the torsion spring comparator 4 in the through hole so that the bottom probe of the torsion spring comparator 4 contacts the outer diameter of the test piece. After the instrument pointer is near 0, limit the torsion spring comparator 4 by the nut. Rotate the wrench 64 left and right to change the height of the top head 63 that is against the bottom of the test piece. Read the maximum number of divisions from the instrument 0 and the minimum number of divisions from the instrument 0 on the torsion spring comparator 4 and add them together to obtain the radial clearance of the test piece.

[0048] The aforementioned upright plate 2 is bolted to the center of the top of the base 1. A threaded hole is provided in the center of the upright plate 2. A measuring frame 3 is bolted to the top of the upright plate 2. A through hole is provided on the side of the measuring frame 3 away from the upright plate 2. A torsion spring comparator 4 is bolted through the through hole.

[0049] The aforementioned bearing assembly locking module 5 is threaded through a threaded hole in the center of the vertical plate 2. The bearing assembly locking module 5 includes a spindle 51, a locking hole 512, a nut 52, and a locking rod 53. One side of the spindle 51 has a threaded step 513, which is engaged in the threaded hole. The other side of the threaded step 513 extends through the vertical plate 2 away from the torsion spring comparator 4. A bearing sleeve groove 511 is provided on the side of the spindle 51 closest to the torsion spring comparator 4. A locking hole 512 is formed in the center of the spindle 51, with a threaded section in the center. A nut 52 is threaded onto the side of the threaded step 513 away from the torsion spring comparator 4, with one end of the nut 52 abutting against the vertical plate 2. The locking rod 53 is threaded through the locking hole 512 in the center of the locking rod. A locking plate 54 is fitted onto the side of the torsion spring comparator 4 near the 53 via a clearance fit. The locking plate 54 has an insertion hole in the center, the diameter of which is larger than the maximum outer diameter of the locking rod 53. The locking plate 54 is fitted onto the locking rod 53 through the insertion hole. One end of the locking plate 54 abuts against the end face of the spindle 51 away from the nut 52. A handle 55 is fitted onto the side of the locking rod 53 near the nut 52 via a threaded fit. It should also be noted that the maximum outer diameter of the threaded step 513 on one side of the spindle 51 and the outer diameter of the bearing sleeve groove 511 on the other side are smaller than the outer diameter of the middle section, which facilitates the installation and positioning of the spindle 51. A locking nut 514 is inserted through the center of the top of the spindle 51 near the vertical plate 2. The locking nut 514 enters vertically downward into the locking hole 512 and abuts against the outer wall of the locking rod 53. Tightening the locking nut 514 limits the test piece to be limited by the locking plate 54.

[0050] The aforementioned measuring module 6 is bolted to the top of the base 1, directly below the torsion spring comparator 4. The measuring module 6 includes: a measuring seat 61, a bearing 62, a wrench 64, and a top head 63. The measuring seat 61 is bolted to the top of the base 1, directly below the torsion spring comparator 4. The outer ring of the bearing 62 is interference-fitted onto the top of the measuring seat 61. The inner ring of the bearing 62 is interference-fitted onto the top head 63. The wrench 64 is bolted to the outside of the inner ring of the bearing 62. The top end face of the top head 63 is inclined.

[0051] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A fixture for detecting radial clearance of a double-groove bearing, characterized in that, include: Base (1); The upright plate (2) is bolted to the center of the top of the base (1). A threaded hole is provided in the center of the upright plate (2). A measuring frame (3) is bolted to the top of the upright plate (2). A through hole is provided on the side of the measuring frame (3) away from the upright plate (2). Torsion spring comparator (4), wherein the torsion spring comparator (4) is bolted through the through hole; The bearing set locking module (5) is threaded through the threaded hole in the center of the vertical plate (2); The measuring module (6) is bolted to the top of the base (1) and located directly below the torsion spring comparator (4).

2. The fixture for detecting radial clearance of a double-groove bearing according to claim 1, characterized in that, The bearing assembly locking module (5) includes: The mandrel (51) has a threaded step (513) on one side, which is fitted into a threaded hole on one side. The other side of the threaded step (513) extends through the vertical plate (2) away from the torsion spring comparator (4). The mandrel (51) has a bearing sleeve groove (511) on the side close to the torsion spring comparator (4). Locking hole (512), the locking hole (512) is opened through the center of the mandrel (51), and the center of the locking hole (512) is a threaded section; Nut (52), the nut (52) is threadedly fitted on the side of the threaded step (513) away from the torsion spring comparator (4), and one end of the nut (52) abuts against the vertical plate (2); A locking rod (53) is threaded through the locking hole (512) in the center of the locking rod (53). A locking plate (54) is installed on the side of the locking rod (53) near the torsion spring comparator (4). An insertion hole is opened in the center of the locking plate (54). The diameter of the insertion hole is larger than the maximum outer diameter of the locking rod (53). The locking plate (54) is fitted onto the locking rod (53) through the insertion hole. One end of the locking plate (54) abuts against the end face of the spindle (51) away from the nut (52). A handle (55) is threaded on the side of the locking rod (53) near the nut (52).

3. The fixture for detecting radial clearance of a double-groove bearing according to claim 2, characterized in that, The maximum outer diameter of the threaded step (513) on one side of the mandrel (51) and the outer diameter of the bearing sleeve groove (511) on the other side are smaller than the outer diameter of the middle section.

4. The radial clearance detection fixture for double-groove bearings according to claim 3, characterized in that, A locking nut (514) is inserted through the top center of the spindle (51) near the side of the upright plate (2). The locking nut (514) enters vertically downward into the locking hole (512) and abuts against the outer wall of the locking rod (53).

5. The radial clearance testing fixture for double-groove bearings according to claim 4, characterized in that, The measurement module (6) includes: Measuring base (61), which is bolted to the top of the base (1) and located directly below the torsion spring comparator (4); The bearing (62) has an outer ring that is interference-fitted and mounted on the top of the measuring seat (61), and an inner ring that is interference-fitted and mounted on a top head (63). A wrench (64) is bolted to the outside of the inner ring of the bearing (62).

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