Tool for testing tensile strength of conical bearing retainer

Abstract

The utility model discloses a tool for testing the tensile strength of a conical bearing retainer, solves the problems that a tool for the conical bearing retainer in the prior art is large in mass and not easy to transport, and has the beneficial effects that the manufacturing cost is reduced, and the transportation is convenient. Comprising a first tool and a second tool, each of the first tool and the second tool comprises a tool body and a supporting piece, the two tool bodies are the same in structure and size, a conical annular ring is formed after the two tool bodies are spliced, the gap between the annular ring and the inner side face of the conical bearing retainer is 0.2-0.8 mm, and the supporting pieces are semi-annular structural pieces. One side of the supporting piece is fixedly connected with the inner side wall of the tool body, the other side of the supporting piece is connected with a supporting piece of another tool in a clamped mode, and a baffle is arranged at the end of the annular ring. Open holes are formed in the inner side faces of the two tool bodies respectively, and the connecting pieces penetrate through the handles and the open holes.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a tool for testing the breaking force of a tapered bearing retainer. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Large bearings use tapered bearing cages, which require a tensile strength test during production to ensure they meet strength requirements. Existing testing devices for tensile strength testing are primarily designed for the stretching of small tapered bearing cages. These devices use handheld testing tools to stretch the cages from both sides, but the strength cannot be guaranteed, making them impractical for large tapered bearing cages.

[0004] In addition, there are also tensile tests using tensile equipment, and tooling is needed during the test. Specifically, a one-piece tensile test tooling is selected to be placed inside the tapered bearing retainer. When the mass of the tapered bearing retainer is large, the mass of the one-piece tensile test tooling is large, the production cost is high, and there is a problem of waste of resources; moreover, the one-piece tooling is not easy to carry, and workers need to cooperate with an overhead crane to carry it. Even with the cooperation of an overhead crane, the one-piece tooling is not convenient to lift because it has no fulcrum. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a tool for testing the breaking force of a tapered bearing retainer, so as to ensure that the force on the device and the tapered bearing retainer is uniform during the tensile test, thereby ensuring the accuracy of the breaking force test results.

[0006] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0007] A tool for testing the breaking force of a tapered bearing retainer includes a first tool and a second tool. The first tool and the second tool each include a tool body and a support member. The two tool bodies have the same structure and size. When the two tool bodies are spliced ​​together, a tapered annular ring is formed. The gap between the annular ring and the inner side surface of the tapered bearing retainer is 0.2-0.8 mm. The support member is a semi-annular structural member. One side of the support member is fixedly connected to the inner side wall of the tool body, and the other side of the support member is engaged with the support member of the other tool. A baffle is provided at the end of the annular ring.

[0008] Openings are respectively arranged on the inner side surfaces of the two tool bodies, and the connecting pieces are arranged through the handles and the openings, so that the handles can be connected to the tensile testing equipment.

[0009] In the above-mentioned tool for testing the breaking force of a tapered bearing retainer, the inner side surfaces of the tool body are respectively provided with convex parts, the convex parts are provided with the openings, and the openings are arranged along the axial direction of the annular ring.

[0010] In the above-mentioned tool for testing the breaking force of a tapered bearing retainer, the height of the protrusion is the same as the height of the tool body.

[0011] As described above, in a tool for testing the breaking force of a tapered bearing retainer, the support member includes a curved plate and a straight plate, the curved plate is fixed to the inner side wall of the tool body, the curved plate is arranged around the convex portion, a protrusion or a groove is provided on the straight plate of the support member in the first tool, and the straight plate of the support member in the second tool is snap-connected with the straight plate of the support member in the first tool.

[0012] As described above, in the tooling for testing the breaking force of a tapered bearing retainer, the protrusion is provided at the straight plate of the support member in the first tooling, and slots are provided on both sides of the protrusion; the groove is provided at the straight plate of the support member in the second tooling, and blocks are provided on both sides of the groove, and when the protrusion is engaged with the groove, the block of the groove is engaged in the slot.

[0013] The tool for testing the breaking force of a tapered bearing retainer as described above, wherein the straight plate of the support member in the first tool is provided with two protrusions, and the two protrusions are spaced apart by a distance;

[0014] The length of the protrusion is greater than the width of the straight plate of the support member in the first tooling.

[0015] In the above-mentioned tool for testing the breaking force of a tapered bearing retainer, the baffle and the end with the smaller diameter of the annular ring are fixedly connected by a fastener, and the fastener is detachable relative to the baffle and the annular ring.

[0016] The tool for testing the breaking force of a tapered bearing retainer as described above, wherein the baffle is an annular ring;

[0017] The outer diameter of the baffle is greater than or equal to the outer diameter of one end of the tapered bearing retainer in contact with the baffle.

[0018] In the tooling for testing the breaking force of a tapered bearing retainer as described above, the handle is a U-shaped handle, the width of the U-shaped handle is greater than the thickness of the tapered bearing retainer, a stretching rod is provided at one end of the U-shaped handle, and anti-slip grooves are provided on the side of the stretching rod.

[0019] In the tooling for testing the breaking force of a tapered bearing retainer as described above, the connecting member is a pin, which passes through one side of the U-shaped handle, the opening, and the other side of the U-shaped handle in sequence.

[0020] The beneficial effects of the above utility model are as follows:

[0021] 1) In the present invention, the first tooling and the second tooling are assembled into an annular ring, which is convenient for processing and manufacturing. Support members are set inside the two tooling bodies. The support members are semi-annular structural members, so that the first tooling and the second tooling are hollowed out to reduce the weight of the tooling and save resources; and the hollowed-out first tooling and the second tooling are convenient for staff to carry and transport.

[0022] 2) In the present invention, the straight plates of the first fixture and the second fixture are connected by a snap-fit ​​connection through a protrusion and groove structure. The snap-fit ​​connection plays a guiding role, ensuring that the force on the device and the tapered bearing retainer is uniform during the tensile test, thereby ensuring the accuracy of the tensile force test results.

[0023] 3) In the present invention, a baffle is provided at the end of the annular ring, which limits one end of the tapered bearing retainer to prevent the tapered bearing retainer from falling during the tensile strength test.

[0024] 4) The present invention is provided with two toolings, with slots provided on both sides of the protrusion, and blocks cooperating with the slots provided on both sides of the groove. In this way, the length of the protrusion is guaranteed, and the guiding effect of the protrusion and the groove is further guaranteed, which effectively ensures that the device and the tapered bearing retainer are subjected to uniform force during the test process, and will not affect the subsequent use of the tapered bearing retainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 This is a schematic diagram of a tool for testing the breaking force of a tapered bearing retainer according to one or more embodiments of the present invention. Figure 1 .

[0027] Figure 2 This is a schematic diagram of a tool for testing the breaking force of a tapered bearing retainer according to one or more embodiments of the present invention. Figure 2 .

[0028] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0029] Wherein: 1. First fixture, 2. Second fixture, 3. Pin, 4. Handle, 5. Tapered bearing cage, 6. Baffle, 7. Screw, 8. Protrusion;

[0030] 1-1. Arc plate, 1-2. Bump, 1-3. Straight plate, 1-4. Block, 2-1. Support part, 2-2. Tool body, 4-1. Stretching rod. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0033] As introduced in the background technology, the existing tensile test tooling has the problem of being heavy and difficult to carry. In order to solve the above technical problems, the present utility model proposes a tooling for testing the breaking force of a tapered bearing retainer.

[0034] Example 1

[0035] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a tool for testing the breaking force of a tapered bearing retainer includes a first tool 1 and a second tool 2. The first tool 1 and the second tool 2 each include a tool body 2-2 and a support member 2-1. The two tool bodies have the same structure and size. When spliced ​​together, the two tool bodies form a tapered annular ring. The gap between the annular ring and the inner side of the tapered bearing retainer is 0.2-0.8 mm. The support member is a semi-annular structural member. One side of the support member is fixedly connected to the inner side wall of the tool body, and the other side of the support member is engaged with the support member of the other tool. A baffle is provided at the end of the annular ring.

[0036] The inner sides of the two tooling bodies 2-2 are respectively provided with openings, which are circular holes. The connecting parts are passed through the handles and the openings. The handles 4 can be connected to the tensile testing equipment.

[0037] Specifically, the inner side surfaces of the tool body are respectively provided with convex parts 8 , and openings are provided at the convex parts 8 , and the openings are arranged along the axial direction of the annular ring.

[0038] It should be explained that the baffle 6 is fixedly connected to one end of the annular ring by multiple fasteners. A threaded hole is provided on the end side of the annular ring, and a through hole corresponding to the position of the threaded hole is provided on the baffle. The fastener can be specifically a screw 7. The fastener passes through the through hole of the baffle and is connected to the threaded hole. The fastener is detachable relative to the baffle 6 and the annular ring. After the annular ring is set on the inner side of the tapered bearing retainer, the baffle is fixed to one end of the annular ring. After the tensile test is completed, the baffle is removed by removing the fastener, and then the two sections of tooling are taken out for recycling.

[0039] Moreover, the baffle 6 is fixed to the end of the annular ring with a smaller diameter.

[0040] It is easy to understand that the height of the annular ring is adapted to the height of the tapered bearing retainer 5, the outer diameter of the annular ring is less than or equal to the inner diameter of the tapered bearing retainer, and the gap between the annular ring and the inner side surface of the tapered bearing retainer is 0.2-0.8 mm. Preferably, the height of the annular ring is the same as the height of the tapered bearing retainer.

[0041] In this embodiment, the baffle 6 is an annular structural member and will not affect the connection between the connecting member and the convex opening; the outer diameter of the baffle is greater than or equal to the outer diameter of one end of the tapered bearing retainer in contact with it, and the inner diameter of the baffle is less than or equal to the inner diameter of the non-convex portion of the first tooling or the second tooling.

[0042] Hollow support members 1-2 are provided in the middle of the inner walls of the first and second tooling. The support members 1-2 are provided along the radial direction of the first tooling. Along the axial direction of the annular ring, the thickness of the support members is less than the height of the annular ring (can be 1 / 10 of the height of the annular ring).

[0043] refer to Figure 2 As shown, the support member includes a curved plate 1-1 and a straight plate 1-3. The curved plate is fixed to the inner side wall of the tooling body. The curved plate 1-1 is arranged around the convex portion. A convex block or groove is provided on the straight plate of the support member in the first tooling. The straight plate of the support member in the second tooling is engaged and connected with the straight plate of the support member in the first tooling.

[0044] In this embodiment, a protrusion 1-2 is provided on the straight plate of the support member in the first tooling, and a card slot is provided on both sides of the protrusion; a groove is provided on the straight plate of the support member in the second tooling, and a card block 1-4 is provided on both sides of the groove. When the protrusion is engaged with the groove, the card block of the groove is inserted into the slot.

[0045] In addition, two protrusions 1-2 are provided on the straight plate of the support member in the first tooling, and the two protrusions are set at a distance; the length of the protrusion 1-2 is greater than the width of the straight plate of the support member in the first tooling;

[0046] Specifically, a wire cutting process is used to cut the protrusions or grooves at the first support member and the second support member; in this embodiment, two protrusions are set on the first support member in the first tooling, and the distance between the two protrusions is greater than or equal to the radius of the annular ring; two grooves are set on the second support member in the second tooling 1-5. In addition, blocks are set on both sides of the groove of the second support member toward the direction of the first tooling, and the two sides of the protrusion of the first support member are recessed to cooperate with the blocks at the two places of the groove. While ensuring the structural strength of the first tooling and the second tooling support members, the length of the protrusion is ensured (which may be greater than the width of the straight plate), and the guiding effect of the protrusion and the groove is further ensured. The protruding length of the protrusion is greater than the depth of the grooves on both sides of the groove. The depth of the groove is 1 / 2-3 / 4 of the width of the straight plate, and the length direction of the protrusion is parallel to the plane where the two protrusions are located.

[0047] It should be noted that the mutual fitting clearance between the first fixture and the second fixture at the engaging connection is 0.1-0.4 mm.

[0048] It is easy to understand that the inner side walls of the first tooling and the second tooling are both provided with a convex portion 8, and the convex portion is located at the center position of the inner side surface of the first tooling or the second tooling. The convex portion can be a cylindrical convex portion, and the arc-shaped plate 1-1 of the support member transitions along the convex portion. The length of the convex portion is the same as the thickness of the first tooling and the second tooling, and the plane where the central axis of the openings of the two convex portions is located passes through the central axis of the annular ring.

[0049] In addition, the handle 4 is a U-shaped handle, the width of which is greater than the thickness of the tapered bearing retainer. A tensile rod is provided at one end of the U-shaped handle. The tensile rod 4-1 is used to connect to existing tensile testing equipment (such as a tensile testing machine), and anti-slip grooves are provided on the side of the tensile rod.

[0050] It should be noted that the connecting part is a pin 3, one end of which has a limiting end. The length of the pin is greater than the length of the outer side of the U-shaped handle. The pin passes through one side of the U-shaped handle, the convex opening, and the other side of the U-shaped handle in sequence. The pin serves to connect the handle and the annular ring. The handle and the pin cooperate to achieve rapid replacement during the test, thereby improving efficiency.

[0051] The device provided in this embodiment utilizes multiple sections of fixtures assembled into an annular ring, facilitating processing and manufacturing. Some or all of the fixtures are hollowed out to reduce the ring's mass and conserve resources. The fixtures at both ends are connected by snap-fitting, and the snap-fitting joints serve as guides, ensuring uniform force on the device and the tapered bearing retainer during the tensile test, thereby ensuring the accuracy of the breaking force test results. Specifically, two fixtures are used, with the first and second fixtures being hollowed out to reduce weight and achieve a lightweight design. A 220mm diameter fixture weighs 17kg, but the lightweight design reduces the weight to 4.5kg, reducing measurement errors caused by the fixture's weight. The handle is not lightened to maximize the overall strength of the device.

[0052] A method for using a tool for testing the breaking force of a tapered bearing cage includes the following:

[0053] Place the first and second tooling pieces on the inner side of the tapered bearing cage, and assemble the two pieces of tooling into an annular ring. The gap between the annular ring and the inner side of the tapered bearing cage is 0.2-0.8mm.

[0054] The handle is placed on the tapered bearing retainer, the handle corresponds to the position of the annular ring protrusion, the connecting piece is passed through the handle and the protrusion opening, and the handle is connected to the tensile testing equipment;

[0055] Start the tensile testing equipment and apply a set tensile force to the handle. Pull the tapered bearing cage outward through the handle and the annular ring. Gradually increase the tensile force and observe whether the tapered bearing cage is broken.

[0056] After the set time, stop tensioning, disconnect the handle from the tensile testing device, remove the pin, remove the baffle, and remove the first tooling and the second tooling from the tapered bearing retainer.

[0057] In this embodiment, the first fixture and the second fixture are snap-fitted together to ensure uniform force on the device during the breaking force test. The clearance between them is between 0.1-0.4 mm, and the annular ring fits closely with the inner surface of the tapered bearing retainer, thereby ensuring the accuracy of the tapered bearing retainer, especially the tapered bearing retainer, in the breaking force test results.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tool for testing the breaking force of a tapered bearing retainer, characterized in that: The first and second toolings each include a tooling body and a support member. The two tooling bodies have the same structure and size. When the two tooling bodies are spliced ​​together, a tapered annular ring is formed. The gap between the annular ring and the inner side of the tapered bearing retainer is 0.2-0.8 mm. The support member is a semi-annular structural member. One side of the support member is fixedly connected to the inner side wall of the tooling body, and the other side of the support member is engaged with the support member of the other tooling. A baffle is provided at the end of the annular ring. Openings are respectively arranged on the inner side surfaces of the two tool bodies, and the connecting pieces are arranged through the handles and the openings, so that the handles can be connected to the tensile testing equipment.

2. A tool for testing the breaking force of a tapered bearing retainer according to claim 1, characterized in that: The inner side surfaces of the tool body are respectively provided with convex parts, and the openings are provided at the convex parts, and the openings are arranged along the axial direction of the annular ring.

3. A tool for testing the breaking force of a tapered bearing retainer according to claim 2, characterized in that: The height of the protrusion is the same as the height of the tool body.

4. The tool for testing the breaking force of a tapered bearing retainer according to claim 2, characterized in that: The support member includes an arc-shaped plate and a straight plate. The arc-shaped plate is fixed to the inner side wall of the tooling body. The arc-shaped plate is arranged around the convex portion. A protrusion or a groove is provided on the straight plate of the support member in the first tooling. The straight plate of the support member in the second tooling is snap-connected with the straight plate of the support member in the first tooling.

5. The tool for testing the breaking force of a tapered bearing retainer according to claim 4, characterized in that: The protrusion is provided at the straight plate of the support member in the first tooling, and a card slot is provided on both sides of the protrusion; the groove is provided at the straight plate of the support member in the second tooling, and a card block is provided on both sides of the groove. When the protrusion is engaged with the groove, the card block of the groove is locked into the card slot.

6. The tool for testing the breaking force of a tapered bearing retainer according to claim 4, characterized in that: The straight plate of the support member in the first tooling is provided with two protrusions, and the two protrusions are spaced apart; The length of the protrusion is greater than the width of the straight plate of the support member in the first tooling.

7. The tool for testing the breaking force of a tapered bearing retainer according to claim 1, characterized in that: The baffle is fixedly connected to the end of the annular ring with a smaller diameter via a fastener, and the fastener is detachably arranged relative to the baffle and the annular ring.

8. A tool for testing the breaking force of a tapered bearing retainer according to claim 1 or 7, characterized in that: The baffle is an annular ring; The outer diameter of the baffle is greater than or equal to the outer diameter of one end of the tapered bearing retainer in contact with the baffle.

9. The tool for testing the breaking force of a tapered bearing retainer according to claim 1, characterized in that: The handle is a U-shaped handle, the width of which is greater than the thickness of the tapered bearing retainer. A stretching rod is provided at one end of the U-shaped handle, and anti-slip grooves are provided on the side of the stretching rod.

10. The tool for testing the breaking force of a tapered bearing retainer according to claim 9, characterized in that: The connecting piece is a pin, which passes through one side of the U-shaped handle, the opening, and the other side of the U-shaped handle in sequence.

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