A hardness measuring device for angular contact ball bearings

Abstract

The utility model discloses a kind of angular contact ball bearing hardness measuring devices, it is related to bearing hardness measurement technical field.The utility model includes measuring table, measuring stand, hardness measurement module and bearing placing assembly, measuring stand rear side position upper surface is fixed with the measuring stand of L type, the top of the measuring stand is equipped with the hardness measurement module setting downwards, the bearing placing assembly includes outer ring supporting unit and inner ring supporting unit, the outer ring supporting unit is sleeved in the outer of inner ring supporting unit, outer ring supporting unit bottom is fixedly installed on convex slide, the outer ring of angular contact ball bearing is put on the top of outer ring supporting unit or the inner ring is put on inner ring supporting unit.The utility model is independently supported to bearing outer ring and inner ring by bearing placing assembly, so as to measure outer ring and inner ring hardness, can obtain best supporting force to measure, solve the problem that the present bearing is not placed unevenly and leads to higher problem such as measurement accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of bearing hardness measurement technology, and in particular relates to a device for measuring the hardness of angular contact ball bearings. Background Technology

[0002] Hardness, a term in physics, refers to the ability of a material to resist indentation by a harder object in a localized area. It is an indicator of the localized resistance of a solid to the intrusion of external objects and is used to compare the hardness of various materials.

[0003] Currently, some existing bearing hardness measuring devices require manual placement of the bearing on a testing platform by operators, followed by hardness measurement using a probe. However, because the outer and inner rings are connected by steel balls and are not a single unit, if an angular contact ball bearing is placed on the testing table, manufacturing errors may result in the outer and inner rings not simultaneously contacting the platform surface. This means one ring may be suspended, and when the hardness probe is pressed against the surface of the suspended outer or inner ring, the lack of adequate support can reduce measurement accuracy. Existing bearing testing platforms lack independent support for the outer and inner rings. Utility Model Content

[0004] The purpose of this invention is to provide a hardness measuring device for angular contact ball bearings. By using a bearing placement assembly to independently support the outer and inner rings of the bearing, the device can obtain the optimal support force for measuring the hardness of both the outer and inner rings, thus solving the problem of low measurement accuracy caused by uneven bearing placement in existing systems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a hardness measuring device for angular contact ball bearings, comprising a measuring platform, a measuring frame, a hardness measuring module, and a bearing placement assembly. The measuring platform is provided with a convex groove, and a convex slider is slidably disposed within the convex groove. A first driving assembly for driving the displacement of the convex slider is provided on one side of the measuring platform. An L-shaped measuring frame is fixed to the upper surface of the rear side of the measuring platform. A hardness measuring module is disposed downwards at the top of the measuring frame. The bearing placement assembly includes an outer ring support unit and an inner ring support unit. The outer ring support unit is sleeved over the inner ring support unit, and the bottom of the outer ring support unit is fixedly mounted on the convex slider. The outer ring of the angular contact ball bearing is placed on top of the outer ring support unit, or the inner ring is placed on the inner ring support unit.

[0007] The present invention is further configured such that the outer ring support unit includes an outer sleeve, an inner moving rod, and a rotary collar. The inner wall of the outer sleeve is evenly provided with multiple first slots. The lower half of each first slot has an outwardly penetrating slot, and the upper half of each first slot has two first limiting holes. The outer wall of the outer sleeve has an external thread extending from the bottom to the top of the slot. The lower half of the inner moving rod is a tapered rod, and the upper half is a support rod. The tapered rod has a return spring hole near its top. A positioning bolt is screwed into the return spring hole at its outer end. A first return spring is installed inside the return spring hole. The outer side of the support rod has two first limiting rods, which are inserted into the corresponding first limiting holes. The rotary collar is spirally fitted onto the external thread. The tapered rod is inserted from the slot to the outside of the outer sleeve. The support rod is secured in the first slot. Multiple first return springs evenly abut against the inner ring support unit. The top of the inner moving rod has an outer ring limiting structure.

[0008] The present invention is further configured such that the outer ring limiting structure includes a first placement platform and a first limiting stop, wherein the outer side of the top of the first placement platform is provided with an upwardly extending first limiting stop.

[0009] The present invention is further configured such that the inner ring support unit includes an inner sleeve, an outer moving rod, and an outer support rod. The inner wall of the inner sleeve is evenly provided with a plurality of second slots. The side wall of the second slot is provided with two second limiting holes that extend to the outside of the inner sleeve. The inner side of the lower half of the outer moving rod is provided with a chamfered surface. The outer side of the outer moving rod is provided with two second limiting rods. A second return spring is embedded in the outer side of the outer moving rod between the two second limiting rods. The two second limiting rods are inserted into the two second limiting holes respectively. The outer wall of the bottom end of the inner sleeve is screwed onto the inner wall of the bottom end of the outer sleeve. The upper half of the outer support rod is conical. The outer support rod is spirally inserted into the inner sleeve from the bottom of the inner sleeve. The top of the outer moving rod is provided with an inner ring limiting structure.

[0010] The present invention is further configured such that the inner ring limiting structure includes a second placement platform and a second limiting stop, wherein the inner side of the top of the second placement platform is provided with an upwardly extending second limiting stop.

[0011] The present invention is further configured such that the first driving component includes a first servo motor and a first lead screw, the first lead screw is connected to the shaft of the first servo motor, and the first lead screw is helically inserted into the side wall of the convex slider.

[0012] The present invention is further configured such that the hardness measuring module includes a second drive assembly, a pressing mounting block and a hardness measuring head, the hardness measuring head is mounted on the bottom of the pressing mounting block, the pressing mounting block is movably inserted into the end of the crossbeam of the L-shaped measuring frame, the second drive assembly includes a second servo motor and a second lead screw, the second lead screw is connected to the shaft of the second servo motor, and the second lead screw is helically inserted from the top of the pressing mounting block.

[0013] This utility model has the following beneficial effects:

[0014] The outer ring support unit of this utility model can independently support the outer ring of the bearing. When the hardness of the outer ring is tested, the outer ring is well supported, which can effectively obtain high accuracy measurement. The inner ring is not supported, which does not affect the measurement effect of the outer ring. When the inner ring support unit supports the inner ring, the inner ring is well supported so that the hardness measurement of the inner ring is accurate. However, the outer ring is not supported, which does not affect the measurement of the inner ring.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a device for measuring the hardness of an angular contact ball bearing.

[0018] Figure 2 This is an exploded structural diagram of an angular contact ball bearing hardness measuring device.

[0019] Figure 3 This is a schematic diagram of the outer sleeve structure.

[0020] Figure 4 This is a schematic diagram of the internal displacement rod.

[0021] Figure 5 This is a schematic diagram of the inner sleeve.

[0022] Figure 6 This is a schematic diagram of the external displacement rod.

[0023] Figure 7 This is a structural diagram of the measuring platform and measuring frame.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Measuring stage; 11. First drive assembly; 12. Convex slide groove; 13. Movable slot of outer support rod; 2. Measuring frame; 3. Convex slider; 4. Press-down mounting block; 41. Second drive assembly; 5. Bearing placement assembly; 6. Outer ring support unit; 61. Inner moving rod; 611. Inclined cone rod; 612. Support rod; 613. First return spring; 6130. Return spring hole; 614. First limiting rod; 615. First placement stage; 616. First limiting stop; 62. Outer sleeve; 621. External thread; 622. Slot hole; 623. First slot; 624. First limiting hole; 7. Inner ring support unit; 70. Outer support rod; 71. Outer moving rod; 711. Beveled surface; 712. Second limiting rod; 713. Second return spring; 714. Second placement platform; 715. Second limiting stop; 72. Inner sleeve; 721. Second slot; 722. Second limiting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-7 This utility model relates to a hardness measuring device for angular contact ball bearings, comprising a measuring platform 1, a measuring frame 2, a hardness measuring module, and a bearing placement assembly 5. The measuring platform 1 is provided with a convex groove 12, and a convex slider 3 is slidably disposed within the convex groove 12. A first driving assembly 11 for driving the displacement of the convex slider 3 is provided on one side of the measuring platform 1. An L-shaped measuring frame 2 is fixed to the upper surface of the rear side of the measuring platform 1. A hardness measuring module is provided at the top of the measuring frame 2 facing downward. The bearing placement assembly 5 includes an outer ring support unit 6 and an inner ring support unit 7. The outer ring support unit 6 is sleeved over the inner ring support unit 7, and the bottom of the outer ring support unit 6 is fixedly mounted on the convex slider 3. The outer ring of the angular contact ball bearing is placed on the top of the outer ring support unit 6, or the inner ring is placed on the inner ring support unit 7.

[0028] Before measurement, determine whether to measure the outer or inner ring of the bearing first. If measuring the outer ring first, adjust the support position of the inner ring support unit 7 to its minimum so that it does not support the inner ring. Then, place the outer ring of the bearing on the outer ring support unit 6, and start the hardness measurement module to move down and measure the hardness. After measurement, the bearing can be rotated to measure different positions on the outer ring. When starting to measure the inner ring, adjust the support structure of the inner ring support unit 7 to support the inner ring, and then release the support of the outer ring support unit 6. At this time, the inner ring receives better support and is not affected by the force on the outer ring during measurement.

[0029] When switching between outer and inner ring measurements, the first drive assembly 11 drives the convex slider 3 to move the outer ring support unit 6 and the inner ring support unit 7, so that the outer and inner rings of the bearing are switched to be directly below the hardness measuring head.

[0030] The outer ring support unit 6 includes an outer sleeve 62, an inner moving rod 61, and a rotating collar 60. The inner wall of the outer sleeve 62 is evenly distributed with multiple first slots 623. The lower half of each first slot 623 has an outwardly penetrating slot 622, and the upper half of each first slot 623 has two first limiting holes 624. The outer wall of the outer sleeve 62 has an external thread 621 extending upwards from the bottom to the top of the slot 622. The lower half of the inner moving rod 61 is a tapered rod 611, and the upper half is a support rod 612. The tapered rod 611 has a return spring hole 6130 near its top. A positioning bolt is screwed into the spring hole 6130 at the outer port. A first return spring 613 is installed in the return spring hole 6130. Two first limiting rods 614 are provided on the outer side of the support rod 612. The two first limiting rods 614 are inserted into the first limiting holes 624 respectively. The rotating collar 60 is spirally sleeved on the external thread 621. The inclined cone rod 611 is inserted into the outside of the outer sleeve 62 from the strip hole 622. The support rod 612 is locked in the first slot 623. Multiple first return springs 613 are evenly abutted against the inner ring support unit 7. The top of the inner moving rod 61 is provided with an outer ring limiting structure.

[0031] When the adjusting collar 60 rotates upward along the external thread 621, it will squeeze the inclined tapered rod 611 to move inward, and at the same time, the center position of the inner moving rod 61 will be moved synchronously. The outer ring limiting structure will move the assembly closer to the bearing outer ring, support the bottom of the bearing outer ring, and lock the outer wall of the bearing outer ring to achieve support for the bearing outer ring.

[0032] First, install each inner moving rod 61, then insert the first return spring 613 from the outside through the return spring hole 6130. The first return spring 613 abuts against the inner ring support unit 7, and then use the positioning bolt to screw into the return spring hole 6130 to abut against the first return spring 613, so as to limit the first return spring 613.

[0033] The outer ring limiting structure includes a first placement platform 615 and a first limiting edge 616, wherein the outer side of the top of the first placement platform 615 is provided with an upwardly extending first limiting edge 616.

[0034] The first limiting stop 616 blocks the side wall of the bearing outer ring, and the bottom of the bearing outer ring rests on the first placement platform 615, thereby achieving the function of supporting and limiting the bearing outer ring.

[0035] The inner ring support unit 7 includes an inner sleeve 72, an outer moving rod 71, and an outer support rod 70. The inner wall of the inner sleeve 72 is evenly provided with a plurality of second slots 721. The side wall of the second slot 721 is provided with two second limiting holes 722 that penetrate to the outside of the inner sleeve 72. The inner side of the lower half of the outer moving rod 71 is provided with a chamfered surface 711. The outer side of the outer moving rod 71 is provided with two second limiting rods 712. The outer side of the outer moving rod 71 between the two second limiting rods 712 is embedded with a second return spring 713. The two second limiting rods 712 are inserted into the two second limiting holes 722 respectively. The outer wall of the bottom end of the inner sleeve 72 is screwed onto the inner wall of the bottom end of the outer sleeve 62. The upper half of the outer support rod 70 is conical. The outer support rod 70 is spirally inserted into the inner sleeve 72 from the bottom. The top of the outer moving rod 71 is provided with an inner ring limiting structure.

[0036] Since the inner ring of the bearing needs to be supported from within, the rotating outer support rod 70 pushes upward. Because the upper half of the outer support rod 70 is conical, it pushes the oblique surface 711 of the outer moving rod 71 outward, causing the outer moving rod 71 to unfold outward synchronously, so as to provide tight support to the inner ring of the bearing. The two second limiting rods 712 can ensure that the outer moving rod 71 does not tilt or shift.

[0037] The inner ring limiting structure includes a second placement platform 714 and a second limiting stop 715. The inner side of the top of the second placement platform 714 is provided with an upwardly extending second limiting stop 715.

[0038] The inner ring limiting structure works on the same principle as the outer ring limiting structure, except that one supports the bottom of the outer wall and the other supports the bottom of the inner wall.

[0039] The first drive assembly 11 includes a first servo motor and a first lead screw. The first lead screw is connected to the shaft of the first servo motor and is helically inserted into the side wall of the convex slider 3.

[0040] The first lead screw moves the convex slider 3 at a fixed distance to adjust which of the outer and inner rings is directly below the hardness test head.

[0041] The hardness measurement module includes a second drive assembly 41, a pressing mounting block 4, and a hardness measuring head. The hardness measuring head is mounted on the bottom of the pressing mounting block 4. The pressing mounting block 4 is movably inserted into the end of the crossbeam of the L-shaped measuring frame 2. The second drive assembly 41 includes a second servo motor and a second lead screw. The second lead screw is connected to the shaft of the second servo motor, and the second lead screw is helically inserted from the top of the pressing mounting block 4.

[0042] The second servo motor drives the second lead screw to rotate, which moves the lower mounting block 4 downward so that the hardness measuring head contacts the outer wall of the outer or inner ring for hardness measurement. After the measurement is completed, the lower mounting block 4 is raised.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for measuring the hardness of angular contact ball bearings, characterized in that: The assembly includes a measuring platform (1), a measuring frame (2), a hardness measuring module, and a bearing placement assembly (5). The measuring platform (1) is provided with a convex groove (12), and a convex slider (3) is slidably disposed in the convex groove (12). A first driving assembly (11) for driving the displacement of the convex slider (3) is provided on one side of the measuring platform (1). An L-shaped measuring frame (2) is fixed on the upper surface of the rear side of the measuring platform (1). A hardness measuring module is provided at the top of the measuring frame (2) facing downward. The bearing placement assembly (5) includes an outer ring support unit (6) and an inner ring support unit (7). The outer ring support unit (6) is fitted over the inner ring support unit (7). The bottom of the outer ring support unit (6) is fixedly installed on the convex slider (3). The outer ring of the angular contact ball bearing is placed on the top of the outer ring support unit (6) or the inner ring is placed on the inner ring support unit (7).

2. The angular contact ball bearing hardness measuring device according to claim 1, characterized in that, The outer ring support unit (6) includes an outer sleeve (62), an inner moving rod (61), and a rotating collar (60). The inner wall of the outer sleeve (62) is evenly provided with multiple first slots (623). The lower half of each first slot (623) has an outwardly penetrating slot (622), and the upper half of each first slot (623) has two first limiting holes (624). The outer wall of the outer sleeve (62) has an external thread (621) extending upwards from the bottom to the top of the slot (622). The lower half of the inner moving rod (61) is a tapered rod (611), and the upper half is a support rod (612). The tapered rod (611) has a return spring hole (6130) near its top. The positioning spring hole (6130) has a positioning bolt at the outer port position. The first return spring (613) is installed in the return spring hole (6130). The support rod (612) has two first limiting rods (614) on its outer side. The two first limiting rods (614) are inserted into the first limiting hole (624) respectively. The rotating collar (60) is spirally sleeved on the external thread (621). The inclined cone rod (611) is inserted from the strip hole (622) to the outside of the outer sleeve (62). The support rod (612) is stuck in the first slot (623). Multiple first return springs (613) are evenly pressed against the inner ring support unit (7). The top of the inner moving rod (61) is provided with an outer ring limiting structure.

3. The angular contact ball bearing hardness measuring device according to claim 2, characterized in that, The outer ring limiting structure includes a first placement platform (615) and a first limiting stop (616), and the outer side of the top of the first placement platform (615) is provided with an upwardly extending first limiting stop (616).

4. The angular contact ball bearing hardness measuring device according to claim 2, characterized in that, The inner ring support unit (7) includes an inner sleeve (72), an outer moving rod (71), and an outer support rod (70). The inner wall of the inner sleeve (72) is evenly provided with multiple second slots (721). The side walls of the second slots (721) are provided with two second limiting holes (722) extending through to the outside of the inner sleeve (72). The inner side of the lower half of the outer moving rod (71) is provided with a chamfered surface (711). Two second limiting rods (712) are provided on the outer side of the outer moving rod (71). A second return spring (713) is embedded in the outer surface of the outer moving rod (71) between the limiting rods (712). The two second limiting rods (712) are inserted into the two second limiting holes (722). The outer wall of the bottom end of the inner sleeve (72) is screwed onto the inner wall of the bottom end of the outer sleeve (62). The upper half of the outer support rod (70) is conical. The outer support rod (70) is spirally inserted into the inner sleeve (72) from the bottom. The top of the outer moving rod (71) is provided with an inner ring limiting structure.

5. The angular contact ball bearing hardness measuring device according to claim 4, characterized in that, The inner ring limiting structure includes a second placement platform (714) and a second limiting stop (715), and the inner side of the top of the second placement platform (714) is provided with an upwardly extending second limiting stop (715).

6. The angular contact ball bearing hardness measuring device according to claim 1, characterized in that, The first drive assembly (11) includes a first servo motor and a first lead screw. The first lead screw is connected to the shaft of the first servo motor and is helically inserted into the side wall of the convex slider (3).

7. The angular contact ball bearing hardness measuring device according to claim 1, characterized in that, The hardness measurement module includes a second drive assembly (41), a pressing mounting block (4), and a hardness measuring head. The hardness measuring head is installed at the bottom of the pressing mounting block (4). The pressing mounting block (4) is movably inserted into the end of the crossbeam of the L-shaped measuring frame (2). The second drive assembly (41) includes a second servo motor and a second lead screw. The second lead screw is connected to the shaft of the second servo motor. The second lead screw is inserted into the pressing mounting block (4) from the top.

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