Non-standard centering bearing detection tooling

Abstract

The application provides a non-standard aligning bearing detection tool, which comprises an operation table and a measuring instrument, the measuring instrument comprises a measuring head, the operation table is provided with a first mounting portion and a second mounting portion, the first mounting portion is provided with an adjusting frame, the adjusting frame comprises a supporting rod and an extension arm arranged on the supporting rod, the supporting rod extends vertically, the extension arm can vertically slide along the supporting rod and can rotate in a circumferential direction with the axis of the supporting rod as the center, the measuring instrument is slidably arranged on the extension arm, the second mounting portion is provided with a mounting seat, the mounting seat is provided with a locking piece and an adjusting piece, the locking piece is used for positioning the mounting seat and the inner ring of the bearing to be detected, and the adjusting piece is used for adjusting the position of the outer ring of the bearing to be detected relative to the inner ring of the bearing to be detected. In view of the defects of the prior art, the application provides a non-standard aligning bearing detection tool which can detect various values, has a relatively simple overall structure and is convenient to adjust.

Description

Technical Field

[0001] This invention relates to a non-standard self-aligning bearing testing fixture. Background Technology

[0002] Bearings are crucial components used for rotating supports in mechanical bodies. A bearing typically includes an outer ring, an inner ring, and several rollers. Both the outer and inner rings have grooves on their opposing surfaces, forming a raceway between the two grooves for the rollers to roll. In this application, the term "non-standard self-aligning bearing" refers to a non-standard self-aligning bearing with a cross-section where the inner and outer rings are convex outwards from the center. All rollers are cylindrical. The inner ring has grooves for axial positioning of the rollers, and the outer ring is arc-shaped, allowing relative sliding between the outer ring and the rollers to achieve self-aligning. Furthermore, radially extending flange steps are provided at both ends of the outer ring near the axial direction to facilitate subsequent bearing installation. During the production process, bearings often require various tests, such as axial clearance, radial clearance, and runout, to ensure that all aspects of the bearing's values ​​are within a reasonable range. Existing bearing testing fixtures generally include positioning components for locating the bearing under test and measuring instruments for testing it. However, because the relative positional relationship between the outer and inner rings of the bearing under test needs to change when different values ​​are measured, and the positional relationship between the measuring instruments and their measuring heads and the bearing under test also needs to change, existing bearing testing fixtures can only measure a single value, or have a complex overall structure and are inconvenient to adjust. Therefore, improvements are needed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a non-standard self-aligning bearing testing fixture that can detect multiple values, has a relatively simple overall structure, and is easy to adjust.

[0004] To achieve the above objectives, the present invention provides a non-standard self-aligning bearing testing fixture, comprising an operating table and a measuring instrument. The measuring instrument includes a measuring head. The operating table is provided with a first mounting part and a second mounting part. An adjusting frame is provided at the first mounting part. The adjusting frame includes a support rod and an extension arm mounted on the support rod. The support rod extends vertically, and the extension arm is capable of sliding vertically along the support rod and rotating circumferentially about the axis of the support rod. The measuring instrument is slidably mounted on the extension arm. A mounting seat is provided at the second mounting part. The mounting seat is provided with a locking element and an adjusting element. The locking element is used to position the mounting seat and the inner ring of the bearing to be tested. The adjusting element is used to adjust the position of the outer ring of the bearing to be tested relative to the inner ring of the bearing to be tested.

[0005] The advantages of the above technical solution are as follows: A first mounting section and a second mounting section are set on the operating table. Firstly, an adjustment frame including a support rod and an extension arm is installed at the first mounting section. The extension arm is connected to the vertically extending support rod and can slide vertically or rotate circumferentially along it. Finally, the measuring instrument slides on the extension arm. By sliding and rotating the extension arm along the support wall, the distance between the measuring instrument and the second mounting section is adjusted. Finally, the measuring instrument is slid to align its measuring head with the corresponding position of the bearing under test, completing the final fine-tuning. At the second mounting section, a mounting base with locking and adjusting components is installed. The locking component positions the mounting base and the inner ring of the bearing under test, completing the initial installation of the bearing. Depending on the actual test items, the adjusting component is used to adjust the position of the outer ring of the bearing under test relative to its inner ring to meet the requirements for axial clearance, radial clearance, or runout. This allows the fixture to detect multiple values, and adjustments are very convenient for different tests.

[0006] The present invention can be further configured such that: one end of the extension arm is sleeved on the support rod, and one end of the extension arm is provided with an extension portion and a lifting portion that are both annular; a groove is provided between the upper parts of the extension portion and the lifting portion; a plurality of balls are provided between the two grooves; and the lower part of the lifting portion is threadedly connected to the support rod.

[0007] By further designing the extension arm, an extension section and a lifting section are provided at one end of the extension arm connected to the support rod. A groove is provided between the upper parts of the extension section and the lifting section, and several balls are provided in the groove to form a connection between the extension section and the lifting section. Finally, the lower part of the lifting section is threadedly connected to the support rod. When the lifting section is rotated, the vertical lifting of the extension arm can be driven through the threaded engagement between the lifting section and the support rod. When the extension section is rotated, the extension arm can rotate relative to the support rod.

[0008] The present invention can be further configured such that: the extension arm includes two arc-shaped portions located at one end, the two arc-shaped portions are symmetrically arranged on both sides of the support rod, and the ends of the arc-shaped portions are provided with connecting portions with screw holes.

[0009] By further designing, two arc-shaped sections are provided at one end of the extension arm, and a connecting section with screw holes is provided at the end of the arc-shaped sections. After the position of the extension arm is adjusted, the distance between the two connecting sections with screw holes can be adjusted by bolts, so that the two arc-shaped sections are clamped on the support rod, thus completing the positioning of the extension arm.

[0010] The present invention can be further configured such that: the extension arm includes a connecting part and a crossbar, one end of the connecting part is connected to an arc-shaped part, the crossbar is slidably disposed at the other end of the connecting part, and the connecting part extends radially and downwardly along the support rod.

[0011] By further designing the connection between the arc-shaped part of the extension and the crossbar, the connection is made to extend radially and downward along the support rod, so that the crossbar can be at a height similar to the lifting part that also needs to be operated, making it convenient for operators to use.

[0012] The present invention can be further configured such that: a connecting port, a limiting block, and an operating part are provided at the other end of the connecting part; the connecting port is for the crossbar to pass through; the limiting block is provided at the peripheral wall of the connecting port and can elastically extend into the connecting port; an abutting plane is provided at one end of the crossbar; the limiting block can abut against the abutting plane; and the operating part is used to cause the limiting block to separate from the abutting plane.

[0013] With further configuration, a connection port, a limiting block, and an operating part are provided at the other end of the connecting part. The connection port allows one end of the crossbar with the abutment plane to pass through, and then the limiting block extends elastically to form a tight stop with the abutment plane; or the operating part drives the limiting block to disengage from the abutment plane, so that the crossbar can form or release the stop with the connection port of the connecting part, which facilitates a larger adjustment of the position of the measuring instrument by the crossbar, while the sliding cooperation between the measuring instrument and the crossbar is used for small adjustments.

[0014] The present invention can be further configured such that: the adjusting component includes a fork, the fork has a notch and a rod, the fork can form a snap-fit ​​engagement with the outer ring of the bearing to be tested through the notch, the rod is located at the notch of the fork, and the rod has a floating part for driving the fork to swing.

[0015] By further configuring the adjustment component, a shift fork with a notch and a lever is provided. The shift fork can engage with the outer ring of the bearing under test through its notch. Then, the floating part on the lever causes the shift fork to swing, thereby causing the outer ring of the bearing under test to swing relative to the inner ring of the bearing under test, which is positioned by the mounting seat. At this time, the measuring instrument can detect the amount of swing of the bearing under test after adjusting the position of the adjustment frame.

[0016] The present invention can be further configured such that: a guide rod and a locking block are provided on the operating table; the guide rod is arranged in an arc shape with the distance between it and the axis of the bearing to be tested as its radius; the guide rod is detachably connected to the operating table; the floating part is slidably sleeved on the guide rod; and the locking block is used to form a positioning fit between the guide rod and the floating part.

[0017] By further designing the guide rod, the operating table can be detachably connected, and the guide rod can be made into an arc shape with the distance between it and the axis of the bearing under test as its radius. This allows the floating part to drive the fork to swing, so that the end of the fork with the notch will engage with the outer ring of the bearing under test to limit the swing direction, while the floating part at the other end of the fork slides along the guide rod, making the swing of the fork more stable.

[0018] The present invention can be further configured such that: the mounting base includes a screw fixed on the operating table, and the adjusting component includes a threaded block that is threadedly engaged with the screw, the threaded block being used to form a limiting engagement with the lower end of the outer ring of the bearing to be tested.

[0019] By further configuring the mounting base, a screw fixed to the operating table is installed, and a threaded block that can engage with the screw thread is installed in the adjustment. The outer ring of the bearing under test is limited by the rotation and lifting of the threaded block, which facilitates the subsequent radial or axial clearance detection of the bearing under test.

[0020] The present invention can be further configured such that: the threaded block is provided with a cap that mates with the lower end sleeve of the bearing to be tested, the cap being U-shaped and including a first slot and a second slot connected to both sides of the first slot, the first slot and the second slot being arc-shaped and straight-shaped, respectively.

[0021] By further designing the threaded block, a cap is provided that can mate with the lower end sleeve of the bearing under test. The cap is U-shaped, allowing the outer ring of the bearing under test to first form a sleeve with the cap during installation, creating initial positioning. Then, the inner ring is positioned by the mounting base, facilitating installation. The cap is also equipped with an arc-shaped first groove and two straight second grooves. When the outer ring of the bearing under test extends into the first and second grooves, it forms an axially positioned sleeve engagement. After installation, the threaded block can still rotate to drive the outer ring of the bearing under test to rise and fall, causing axial displacement of the outer ring relative to the inner ring, facilitating the detection of axial clearance.

[0022] The present invention can be further configured such that the adjusting component also includes a U-shaped washer, which can be inserted between the threaded block and the outer ring of the bearing to be tested and form an abutting fit between the two.

[0023] By further configuring the adjustment component with a U-shaped shim, after the locking component has completed its contact with the inner ring of the bearing under test and the threaded block has been adjusted to the corresponding position, the shim can be inserted between the threaded block and the outer ring of the bearing under test. This facilitates the adjustment of the thickness of the U-shaped shim and makes it easier to detect the radial clearance of the bearing under test. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure for measuring the swing amount in an embodiment of the present invention;

[0025] Figure 2 This is a top view of the first usage method according to an embodiment of the present invention;

[0026] Figure 3 This is an embodiment of the present invention. Figure 2 Sectional view at point AA;

[0027] Figure 4 This is an embodiment of the present invention. Figure 3 Sectional view at CC;

[0028] Figure 5 This is a schematic diagram of the fork structure in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure for measuring radial clearance in an embodiment of the present invention;

[0030] Figure 7 This is an embodiment of the present invention. Figure 6 Sectional view at point BB;

[0031] Figure 8 This is a schematic diagram of the mounting base for measuring radial clearance in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the U-shaped gasket in an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the mounting base for measuring axial clearance in an embodiment of the present invention;

[0034] Figure 11 This is an embodiment of the present invention. Figure 10 Sectional view at point DD;

[0035] Figure 12 This is a schematic diagram of the structure of the first threaded block in an embodiment of the present invention;

[0036] The components include: operating table 1; first mounting part 11; second mounting part 12; guide rod 13; locking block 14; claw part 141; measuring instrument 2; measuring head 21; adjusting frame 3; support rod 31; extension arm 32; extension part 321; lifting part 322; ball bearing 323; arc-shaped part 324; ear part 3241; connecting part 325; connecting port 3251; limit block 3252; operating part 3253; crossbar 326; and abutment. 3261; mounting base 4; locking element 41; positioning bolt 411; adjusting element 42; fork 421; notch 4211; rod 4212; floating part 4213; first threaded block 422; second threaded block 423; cap 424; first slot 4241; second slot 4242; measuring cover 425; U-shaped gasket 426; bearing to be tested 5; inner ring of bearing to be tested 51; outer ring of bearing to be tested 52. Detailed Implementation

[0037] An embodiment of the non-standard self-aligning bearing testing fixture of the present invention is as follows: Figure 1-12 As shown: The system includes an operating table 1 and a measuring instrument 2. The measuring instrument 2 includes a measuring head 21. The operating table 1 is provided with a first mounting part 11 and a second mounting part 12. An adjusting frame 3 is provided at the first mounting part 11. The adjusting frame 3 includes a support rod 31 and an extension arm 32 provided on the support rod 31. The support rod 31 extends vertically, and the extension arm 32 can slide vertically along the support rod 31 and rotate circumferentially about the axis of the support rod 31. The measuring instrument 2 is slidably mounted on the extension arm 32. A mounting base 4 is provided at the second mounting part 12. The mounting base 4 is provided with a locking element 41 and an adjusting element 42. The locking element 41 is used to position the mounting base 4 and the inner ring 51 of the bearing to be tested. The adjusting element is used to adjust the position of the outer ring 52 of the bearing to be tested relative to the inner ring 51 of the bearing to be tested.

[0038] One end of the extension arm 32 is sleeved on the support rod 31, and one end of the extension arm 32 is provided with an annular extension portion 321 and a lifting portion 322. The upper parts of the extension portion 321 and the lifting portion 322 are provided with opposing grooves, and the lifting portion 322 is located on the inner side near the support rod 31. A plurality of ball bearings 323 are provided between the two grooves. The lower part of the lifting portion 322 is threadedly connected to the support rod 31. The extension arm also includes two arc-shaped portions 324 located at one end. The two arc-shaped portions 324 are symmetrically arranged on both sides of the support rod 31, and the ends of the arc-shaped portions 324 are provided with ears 3241 with screw holes. In this embodiment, the arc-shaped portions 324 are located above the extension portion 321, and a gap is formed between them to avoid interference when the arc-shaped portions 324 deform.

[0039] The extension arm 32 includes a connecting part 325 and a crossbar 326. One end of the connecting part 325 is connected to the arc-shaped part 324, and the crossbar 326 is slidably disposed at the other end of the connecting part 325. The connecting part 325 extends radially and downwardly along the support rod 31.

[0040] The other end of the connecting part 325 is provided with a connecting port 3251, a limiting block 3252, and an operating part 3253. The connecting port 3251 is for the crossbar 326 to pass through. The limiting block 3252 is disposed on the peripheral wall of the connecting port 3251 and can elastically extend into the connecting port 3251. One end of the crossbar 326 is provided with a plurality of spaced abutment surfaces 3261. The limiting block 3252 can engage with the abutment surfaces. The operating part 3253 is used to facilitate... The limiting block 3252 disengages from the abutment plane 3261. In this embodiment, the lower end of the limiting block 3252 is provided with an elastic part to strengthen the abutment limit between it and the abutment plane 3261 on the crossbar. The handle at the upper end of the limiting block 3252 slides through the connecting part 325. The operating part 3253 covers the handle and is connected to it to drive the limiting block 3252 to move. The handle of the limiting block 3252 is also provided with a tension spring connected to the connecting part 325 to cause the limiting block 3252 to elastically extend in.

[0041] A contact surface is provided at one end of the crossbar, the limiting block can engage with the contact surface, and the operating part is used to cause the limiting block to separate from the contact surface.

[0042] The adjusting component 42 includes a fork 421, which has a notch 4211 and a rod 4212. The fork 421 can form a snap-fit ​​with the outer ring 52 of the bearing under test through the notch 4211. In this embodiment, the fork 421 has a U-shaped groove, and the notch 4211 is formed by the interval between the two ends of the groove. The flange step of the outer ring 52 of the bearing under test can be inserted into the groove to form a snap-fit ​​between the fork 421 and the bearing under test. The rod 4212 is located on the fork 421 directly opposite the notch 4211, and the rod 4212 has a floating part 4213 for driving the fork 421 to swing. The operating table 1 is provided with a guide rod 13 and a locking block 14. The guide rod 13 is arc-shaped with a radius equal to the distance between its distance from the axis of the bearing under test 5, and the guide rod 13 is detachably connected to the operating table 1. In this embodiment... The operating table 1 is provided with a sliding groove connecting its edge. The guide rod 13 can slide out or be inserted along the sliding groove, which is convenient for replacing bearings 5 ​​of different sizes and specifications. The floating part 4213 is slidably sleeved on the guide rod 13. The locking block 14 is shaped like a claw. The locking block 14 includes a claw part 141, a pressing part 142 and a torsion spring that enables the elastic swing of the two. The claw part 141 is composed of two arc-shaped claw pieces. A slit is provided in the middle of the claw part 141 for the floating part 4213 to be inserted. The inner wall of the claw part 142 is also provided with an internal thread. The guide rod 13 is provided with an external thread that mates with the claw part 142. In use, the floating part 4213 is slid along the guide rod 13 to the corresponding position, and the claw part 141 of the locking block 14 is clamped on the guide rod 13 to form a positioning fit between the guide rod 13 and the floating part. Fine adjustment can also be made by the threads of the claw part 142 and the guide rod 13.

[0043] The mounting base 4 includes a screw 43 fixed to the operating table, and the locking member 41 includes a positioning bolt 411. The screw 43 has an internal threaded hole, and the positioning bolt 411 is screwed into the internal hole of the screw 43. The bearing to be tested 5 is placed above the screw 43, and the upper end of the screw 43 and the positioning bolt 411 form an abutment limit at both ends of the axial direction of the inner ring 51 of the bearing to be tested, thereby completing the positioning of the inner ring 51 of the bearing to be tested. The adjusting member 42 includes a first threaded block 422 and a second threaded block 423, both of which can be threaded into the screw 43. The first threaded block 422 and the second threaded block 423 can both form a limiting fit with the lower end of the outer ring 52 of the bearing to be tested.

[0044] The first threaded block 422 is provided with a cap 424 that mates with the lower end of the outer ring 52 of the bearing to be tested and a measuring cover 425 placed on the upper end of the bearing to be tested 5. The cap 424 is U-shaped and includes a first groove 4241 and a second groove 4242 connected to both sides of the first groove. The first groove 4241 and the second groove 4242 are respectively arc-shaped and straight-shaped. The upper end of the measuring cover 425 is provided with a protrusion located at its center, which facilitates the use of the measuring head 21 to measure the axial clearance of the bearing to be tested 5.

[0045] The adjusting component 42 also includes a U-shaped shim 426. The U-shaped shims 426 are configured in multiples of different thicknesses. The U-shaped shims 426 can be inserted between the second threaded block 423 and the outer ring 52 of the bearing to be tested and form an abutting fit between the two, thereby positioning the outer ring 52 of the bearing to be tested and facilitating the measurement of the radial clearance of the bearing to be tested 5.

[0046] The above examples are merely one preferred embodiment of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included within the protection scope of the present invention.

Claims

1. A non-standard self-aligning bearing testing fixture, comprising an operating table and a measuring instrument, wherein the measuring instrument includes a measuring head, characterized in that: The operating platform is provided with a first mounting part and a second mounting part. The first mounting part is provided with an adjustment frame. The adjustment frame includes a support rod and an extension arm provided on the support rod. The support rod extends vertically. The extension arm can slide vertically along the support rod and can rotate circumferentially about the axis of the support rod. The measuring instrument is slidably mounted on the extension arm. The second mounting part is provided with a mounting base. The mounting base is provided with a locking component and an adjustment component. The locking component is used to position the mounting base and the inner ring of the bearing to be tested. The adjustment component is used to adjust the position of the outer ring of the bearing to be tested relative to the inner ring of the bearing to be tested. The adjusting component includes a fork with a notch and a rod. The rod is positioned opposite the notch and has a floating part for driving the fork to swing. The fork engages with the outer ring of the bearing under test through its notch. The floating part on the rod then causes the fork to swing, resulting in the outer ring of the bearing under test swinging relative to the inner ring of the bearing under test, which is positioned by the mounting base. The measuring instrument can then adjust its position using the adjusting frame to detect the amount of swing of the bearing under test. The operating table is equipped with a guide rod and a locking block. The guide rod is arc-shaped with a radius equal to the distance between its distance from the axis of the bearing under test and the axis of the bearing under test. The guide rod is detachably connected to the operating table. The floating part is slidably sleeved on the guide rod. The locking block is used to position the guide rod and the floating part, so that when the floating part drives the fork to swing, one end of the fork with the notch engages with the outer ring of the bearing under test to limit the swing direction, while the floating part at the other end of the fork slides along the guide rod, making the swing of the fork more stable. The mounting base includes a screw fixed on the operating table. The adjusting component also includes a threaded block that is threaded to the screw. The threaded block is used to form a limiting fit with the lower end of the outer ring of the bearing to be tested. The threaded block is provided with a cap that fits with the lower end of the outer ring of the bearing to be tested. The cap is U-shaped and includes a first groove and a second groove connected to both sides of the first groove. The first groove and the second groove are respectively arc-shaped and straight-shaped. By rotating the threaded block, the outer ring of the bearing to be tested is raised and lowered, so that the outer ring of the bearing to be tested is axially displaced relative to the inner ring, and the axial clearance is detected. The adjusting component also includes a U-shaped shim, which can be inserted between the threaded block and the outer ring of the bearing to be tested and form an abutting fit between them. After the locking component completes the abutment with the inner ring of the bearing to be tested and the threaded block is adjusted to the corresponding position, the U-shaped shim is inserted between the threaded block and the outer ring of the bearing to be tested to facilitate the adjustment of the thickness of the U-shaped shim and to detect the radial clearance of the bearing to be tested.

2. The non-standard self-aligning bearing testing fixture according to claim 1, characterized in that: One end of the extension arm is sleeved on the support rod, and one end of the extension arm is provided with an extension part and a lifting part that are both annular. There is a corresponding groove between the upper parts of the extension part and the lifting part, and a number of balls are provided between the two grooves. The lower part of the lifting part is threadedly connected to the support rod.

3. The non-standard self-aligning bearing testing fixture according to claim 2, characterized in that: The extension arm includes two arc-shaped portions located at one end, which are symmetrically arranged on both sides of the support rod, and the ends of the arc-shaped portions are provided with connecting portions with screw holes.

4. The non-standard self-aligning bearing testing fixture according to claim 3, characterized in that: The extension arm includes a connecting part and a crossbar. One end of the connecting part is connected to an arc-shaped part, and the crossbar is slidably disposed at the other end of the connecting part. The connecting part extends radially and downwardly along the support rod.

5. The non-standard self-aligning bearing testing fixture according to claim 4, characterized in that: The other end of the connecting part is provided with a connecting port, a limiting block and an operating part. The connecting port is for the crossbar to pass through. The limiting block is set on the peripheral wall of the connecting port and can elastically extend into the connecting port. One end of the crossbar is provided with an abutting surface. The limiting block can abut against the abutting surface. The operating part is used to cause the limiting block to separate from the abutting surface.

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