A dynamic life test machine and test method for joint bearings for aerospace

Abstract

The invention discloses a dynamic life test machine for aerospace joint bearings, which belongs to the field of aerospace technology, and comprises a first fixed plate, a second fixed plate and a plurality of fixed tubes circumferentially arranged therebetween; a fixed shaft is coaxially connected between the first fixed plate and the second fixed plate; the fixed shaft is used to fix the inner ring of the joint bearing; a torsion motor is arranged on one side of the fixed tube close to the coaxial line of the first fixed plate; the power end of the torsion motor is connected to a clamping piece; the clamping piece is used to clamp the outer ring of the joint bearing; a detection unit for testing the outer ring and the inner ring of the joint bearing is arranged on the clamping piece, and the service life of the joint bearing can be tested by testing the torsion resistance of the outer ring of the joint bearing, the deformation resistance of the edge of the outer ring of the joint bearing and the thrust resistance of the edge of the inner ring of the joint bearing, thereby achieving the technical effect that cannot be achieved by the testing machine in the prior art, and filling the technical gap in the field of torsion resistance, deformation resistance and thrust resistance of the joint bearings.

Description

Technical Field

[0001] The invention belongs to the field of aerospace technology, and in particular relates to a dynamic life test machine and a test method for a spherical bearing used in aerospace. Background Art

[0002] The spherical plain bearing is composed of an outer ring with an inner spherical surface, an inner ring with an outer spherical surface and a liner in the middle. It is widely used in aerospace, rail passenger cars, mining, metallurgy, heavy-duty vehicles, water conservancy and hydropower and other fields. Therefore, the bearing capacity of the outer ring and inner ring of the spherical plain bearing directly affects the service life of the spherical plain bearing. The testing machine in the prior art can often only test the load of the spherical plain bearing. At the same time, the testing function of such a testing machine is single. At present, there is a lack of testing machines on the market that can test the torsional resistance of the outer ring of the spherical plain bearing. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a dynamic life tester for spherical bearings for aerospace use, so as to solve the technical problem of the lack of a tester for testing the torsional force of the outer ring of the spherical bearing in the prior art.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a dynamic life tester for aerospace joint bearings, comprising a first fixed plate, a second fixed plate and a plurality of fixed tubes circumferentially arranged therebetween; a fixed shaft is coaxially connected between the first fixed plate and the second fixed plate; the fixed shaft is used to fix the inner ring of the joint bearing; a torsion motor is provided on one side of the fixed tube close to the coaxial line of the first fixed plate; the power end of the torsion motor is connected to a clamping piece; the clamping piece is used to clamp the outer ring of the joint bearing; a detection unit for testing the outer ring and inner ring of the joint bearing is provided on the clamping piece.

[0006] Furthermore, a rotating motor is provided on the fixed tube; the power end of the rotating motor is vertically connected to the bending cylinder; the rotating motor can drive the bending cylinder to swing; the twisting motor is coaxially connected to the telescopic shaft of the bending cylinder; the clamping part includes a flipping motor vertically connected to the power end of the twisting motor; the power end of the flipping motor is connected to a clamping block; a clamping plate is provided on one side of the clamping block; a clamping cylinder is provided on the outer wall of the clamping plate; the telescopic shaft of the clamping cylinder passes through the outer wall of the clamping plate and is connected to a clamping plate.

[0007] Furthermore, the two ends of the fixed shaft are respectively connected to the first fixed plate and the second fixed plate; a plurality of square grooves corresponding to the flip motor are opened in the circumference of the fixed shaft; a pushing cylinder facing the inner ring of the joint bearing is provided in the square groove; an arc block for pressing against the inner wall of the inner ring of the joint bearing is connected to the telescopic shaft of the pushing cylinder.

[0008] Furthermore, both sides of the arc block are hinged with bent plates for pressing against the inner edge of the inner ring of the spherical bearing; the bent plate is provided with an arc plate on the side facing the fixed shaft; the arc plate is provided with an arc tooth plate on the side close to the pushing cylinder; two sets of gears are rotatably connected to the side walls of the square groove; the number of gears in each set is odd; the gears are meshed with the arc tooth plates; a square block is sleeved on the telescopic shaft of the pushing cylinder; long tooth plates meshing with the gears are provided on both sides of the square block.

[0009] Furthermore, one end of the fixed tube is hinged to the first fixed disk; an annular groove is opened in the second fixed disk; the side walls of the annular groove are circumferentially provided with a fixed cylinder facing the fixed axis; a sliding rod hinged to the telescopic axis of the fixed cylinder is slidably arranged in the tube at the other end of the fixed tube.

[0010] Furthermore, it also includes a fixing frame for fixing the first fixing plate and the second fixing plate.

[0011] A testing method for a dynamic life tester of a spherical bearing for aerospace use comprises the following steps:

[0012] S1: Pre-positioning; insert the inner ring of the spherical bearing onto the fixed shaft, and connect the fixed shaft to the first fixed plate and the second fixed plate; control the pushing cylinder to push the arc block against the inner wall of the inner ring of the spherical bearing; control the telescopic shaft of the fixed cylinder to extend, so that the clamping member on the sliding tube quickly approaches the outer ring of the spherical bearing, and stops the movement of the telescopic shaft of the fixed cylinder;

[0013] S3: Testing the anti-deformation force of the outer ring edge of the spherical bearing; controlling the rotation of the rotating motor, the movement of the twisting motor, the bending cylinder, the rotation of the flipping motor and the clamping cylinder, so that the clamping plate and the clamping plate clamp the outer ring edge of the spherical bearing; stopping the movement of the rotating motor, the twisting motor, the flipping motor and the clamping cylinder, and only controlling the bending cylinder to contract, and the detection unit tests the range of the anti-deformation force that the outer ring edge of the spherical bearing can withstand;

[0014] S3: Test the torsional force of the edge of the outer ring of the spherical bearing; the pushing cylinder is still pressed against the inner wall of the inner ring of the spherical bearing; control the rotation of the rotating motor, the movement of the twisting motor, the bending cylinder, the rotation of the flipping motor and the clamping cylinder, so that the clamping plate and the clamping plate are clamped on both sides of the outer ring of the spherical bearing respectively; stop the rotation of the bending cylinder, the rotating motor, the flipping motor and the movement of the clamping cylinder; drive the twisting motor to apply torsional force to both sides of the outer ring of the spherical bearing; the detection unit tests the range of torsional force that the edge of the outer ring of the spherical bearing can withstand;

[0015] S4: Test the thrust resistance of the inner ring edge of the spherical bearing; stop the rotation of the rotating motor, twisting motor, edge-breaking cylinder, flipping motor and the movement of the clamping cylinder; control the pushing cylinder to retract the telescopic shaft, and the gear synchronously drives the arc-shaped toothed plate to clamp and push the inner ring edge of the spherical bearing under the action of the long toothed plate block on the telescopic shaft; the detection unit tests the range of thrust resistance of the inner ring edge of the spherical bearing;

[0016] S5: Processing and verification of test results.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a dynamic life tester for aerospace joint bearings. The tester can test the torsion resistance of the outer ring of the joint bearing, the deformation resistance of the edge of the outer ring of the joint bearing, and the thrust resistance of the edge of the inner ring of the joint bearing, and has powerful functions. When testing the torsion resistance of the outer ring of the joint bearing and the deformation resistance of the edge of the outer ring of the joint bearing, the arc plate on the pushing cylinder supports and positions the inner ring of the joint bearing. When testing the thrust resistance of the edge of the inner ring of the joint bearing, the clamping piece used to apply force to the outer ring of the joint bearing can in turn position and clamp the outer ring of the joint bearing. The bending plate hinged on the arc block is linked with the pushing cylinder, so that when the arc block stops applying positioning force to the inner ring of the joint bearing, the bending plate rotates upward to apply thrust to the edge of the inner ring of the joint bearing and then starts the thrust resistance test. The structure is ingenious and can achieve technical effects that cannot be achieved by the testing machine in the prior art, thus filling the technical gap in the field of torsion resistance, deformation resistance and thrust resistance of joint bearings.

[0019] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 is a cross-sectional view of a dynamic life testing machine according to an embodiment of the present invention;

[0022] Figure 2 For the embodiment of the present invention Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 For the embodiment of the present invention Figure 2 A partial enlarged view of point B in the middle.

[0024] The markings in the accompanying drawings are as follows: first fixed disk 1, second fixed disk 2, fixed tube 3, fixed shaft 4, twisting motor 5, clamping part 6, flipping motor 61, clamping block 62, clamping plate 63, clamping cylinder 64, clamping plate 65, rotating motor 7, bending cylinder 8, square groove 9, arc block 10, bending plate 11, arc plate 12, arc tooth plate 13, gear 14, square block 15, long tooth plate 16, annular groove 17, fixed cylinder 18, sliding rod 19, expansion groove 20, through hole 21, inner ring 22, outer ring 23, fixed frame 24, pushing cylinder 25. DETAILED DESCRIPTION

[0025] like Figures 1 to 3 As shown, the present invention provides a dynamic life test machine for aerospace joint bearings, comprising: a first fixed plate 1, a second fixed plate 2, and a plurality of fixed tubes 3 circumferentially arranged between the first fixed plate 1 and the second fixed plate 2; a fixed shaft 4 is coaxially connected between the first fixed plate 1 and the second fixed plate 2; Figure 2 , 3 As shown, the fixed shaft 4 is used to fix the inner ring 22 of the spherical bearing; in each fixed tube 3, a torsion motor 5 is connected to the side close to the coaxial line of the first fixed plate 1; the power end of the torsion motor 5 is connected to the clamping member 6; the clamping member 6 is used to clamp the outer ring 23 of the spherical bearing; the clamping member 6 is provided with a detection unit (not shown in the figure) for testing the outer ring 23 and the inner ring 22 of the spherical bearing.

[0026] Principle and effect of the above technical solution:

[0027] The clamping part 6 is used to clamp the two sides of the edge of the outer ring 23 of the spherical bearing, and then the torsion motor 5 is controlled to rotate. The clamping part 6 applies a twisting force to the two sides of the edge of the outer ring 23 of the spherical bearing, and then the detection unit is used to test the extent of the twisting force borne by the edge of the outer ring 23.

[0028] The clamping member 6 on the torsion motor 5 can apply a twisting force to the outer ring 23 of the joint bearing while clamping it. The torsion motor 5 can accurately control the twisting force applied to the outer ring 23 of the bearing, and cooperate with the detection unit to accurately test the range of the torque resistance of the outer ring 23 of the bearing; the fixed shaft 4 can position the inner ring 22 of the joint bearing to prevent the joint bearing from moving when the clamping member 6 applies a twisting force to the outer ring 23 of the joint bearing, thereby reducing the test error.

[0029] In this embodiment, Figures 1 to 3As shown, each fixed tube 3 is connected to a rotating motor 7 (for driving the bending cylinder 8 to swing); the power end of the rotating motor 7 is vertically connected to the bending cylinder 8; the twisting motor 5 is coaxially connected to the telescopic axis of the bending cylinder 8; the clamping member 6 includes a flipping motor 61 horizontally and vertically connected to the power end of the twisting motor 5; the power end of the flipping motor 61 is connected to a clamping block 62; a clamping plate 63 is integrally formed on the right side of the clamping block 62; the right side wall of the clamping plate 63 is connected to a horizontally arranged clamping cylinder 64; the telescopic axis of the clamping cylinder 64 passes through the right side wall of the clamping plate 63 and is connected to a clamping plate 65.

[0030] Principle and effect of the above technical solution:

[0031] Drive the twisting motor 5, the rotating motor 7, the bending cylinder 8, the flipping motor 61 and the clamping cylinder 64 to make the clamping plate 63 and the clamping plate 65 clamp the edge of the outer ring 23 of the joint bearing, then only control the telescopic shaft of the bending cylinder 8 to contract to apply the bending force, and then test the range of the anti-deformation force that the edge of the outer ring 23 of the joint bearing can withstand through the detection unit.

[0032] By controlling the movement of the clamping cylinder 64 to control the movement of the clamping plate 65 on the telescopic shaft, it can not only apply a twisting force to the outer ring 23 of the joint bearing, but also cooperate with the flipping motor 61 to adjust the clamping angle of the edge of the outer ring 23 of the joint bearing, thereby controlling the accuracy of the clamping point of the edge of the outer ring 23 of the joint bearing, and under the control of the bending cylinder 8, more accurately apply a force to the edge of the outer ring 23 of the joint bearing; the rotating motor 7, the bending cylinder 8, the twisting motor 5 and the flipping motor 61 cooperate with each other to achieve multi-angle movement in space, so that the deformation resistance of joint bearings of different sizes and models can be tested. It has strong adaptability. On the basis of being able to test the twisting resistance of the outer ring 23 of the joint bearing, it can also test the deformation resistance of the edge of the outer ring 23 of the joint bearing. One testing machine realizes two testing functions, which is powerful.

[0033] In this embodiment, Figure 2 , 3 As shown, a through hole 21 is opened on the coaxial line of the first fixed plate 1 and the second fixed plate 2, and the two ends of the fixed shaft 4 are respectively connected to the through holes 21 of the two; a plurality of square grooves 9 corresponding to the flip motor 61 are opened on the circumference of the fixed shaft 4; a pushing cylinder 25 facing the inner ring 22 of the spherical bearing is connected in the square groove 9; an arc block 10 for pressing against the inner wall of the inner ring 22 of the spherical bearing is connected to the telescopic shaft of the pushing cylinder 25.

[0034] Principle and effect of the above technical solution:

[0035] When testing the torsion resistance and deformation resistance of the edge of the joint bearing outer ring 23, the pushing cylinder 25 is used to push the arc block 10 against the inner ring 22 to fix the joint bearing inner ring 22. The arc block 10 fits the inner wall shape of the joint bearing inner ring 22, which can better achieve the tight positioning effect of the joint bearing inner ring 22, and can avoid the movement of the joint bearing when testing the torsion resistance and deformation resistance of the joint bearing outer ring 23, which affects the tolerance range of the torsion resistance and deformation resistance, thereby avoiding the premature expiration of the service life of the joint bearing due to the misjudgment of the torsion resistance and deformation resistance of the joint bearing outer ring 23, thereby avoiding safety accidents caused by the joint bearing reaching its service life prematurely.

[0036] In this embodiment, Figure 2 , 3 As shown, both sides of the arc block 10 are hinged with bending plates 11 for pressing against the inner edge of the inner ring 22 of the spherical bearing; the two sides of the square groove 9 extend with expansion grooves 20 for accommodating the rotation of the bending plate 11; the bending plate 11 is integrally formed with an arc plate 12 on the side facing the fixed shaft 4; the arc plate 12 is connected to the side wall of the pushing cylinder 25; the front and rear side walls of the square groove 9 are rotatably connected with two groups of gears 14, and the two groups of gears 14 are respectively located on both sides of the pushing cylinder 25. In this embodiment, the number of each group of gears 14 is odd, and the number of each group of gears 14 is three, and the three gears 14 in each group of gears 14 are meshed with each other; the arc tooth plate 13 is meshed with the outermost gear 14; the telescopic shaft of the pushing cylinder 25 is externally connected with a square block 15; the two sides of the square block 15 are connected with long tooth plates 16 meshing with the gears 14.

[0037] Principle and effect of the above technical solution:

[0038] The control push cylinder 25 contracts the telescopic shaft, and the gear 14 synchronously drives the arc tooth plate 13 under the action of the long tooth plate 16 block 15 on the telescopic shaft to clamp and push the edge of the inner ring 22 of the spherical bearing; then the detection unit is used to test the range of thrust resistance of the edge of the inner ring 22 of the spherical bearing.

[0039] The clamping member 6 used for testing the torsional resistance of the outer ring 23 of the spherical bearing can realize the positioning of the outer ring 23 of the spherical bearing when testing the thrust resistance of the inner ring 22 of the spherical bearing, so as to avoid huge errors in the test results caused by the movement of the outer ring 23 of the spherical bearing when the thrust is applied to the inner ring 22 of the spherical bearing; the arc-shaped toothed plate 13 on the bending plate 11 is linked with the long toothed plate 16 on the pushing cylinder 25 through the gear 14, and the telescopic shaft of the pushing cylinder 25 drives the arc block 10 to move downward. Since the bending plates 11 at both ends are hinged with the arc block 10, the bending plates 10 will rotate upward and apply thrust to the edge of the inner ring 22 of the spherical bearing, thereby achieving the goal of breaking away from the positioning of the inner ring 22 of the spherical bearing and applying thrust to the edge of the inner ring 22 of the spherical bearing, so as to achieve the two The conversion time of the function is short, which avoids the inaccurate thrust point applied by the bending plate 11 to the inner ring 22 of the joint bearing due to the rotation of the inner ring 22 of the joint bearing after it is separated from the support of the arc block 10, and can indirectly improve the test accuracy of the thrust resistance of the inner ring 22 of the joint bearing. The setting of the expansion groove 20 can provide space for the rotation of the bending plate 11. When the inner ring 22 of the joint bearing is placed on the fixed shaft 4 and positioned, the control push cylinder 25 moves upward, and the bending plate 11 rotates downward to the expansion groove 20. The vertical bending sections of the inner walls of the two bending plates 11 can enable the inner ring 22 of the joint bearing to be quickly positioned. The two ends of the inner ring 22 of the joint bearing are respectively clamped on the vertical bending sections of the bending plate 11 to achieve rapid positioning of the inner ring 22 of the joint bearing.

[0040] In this embodiment, Figure 1 As shown, the right end of the fixed tube 3 is hinged to the first fixed disk 1; an annular groove 17 is opened in the second fixed disk 2; the side wall of the annular groove 17 is circumferentially provided with a fixed cylinder 18 facing the fixed axis 4; a sliding rod 19 hinged to the telescopic axis of the fixed cylinder 18 is slidably provided inside the tube at the left end of the fixed tube 3.

[0041] Principle and effect of the above technical solution:

[0042] The arrangement of the fixed cylinder 18 and the sliding rod 19 in the sliding tube can realize movement at multiple angles, and the detection unit can be used to test the torsion resistance and deformation resistance of the outer ring 23 of the spherical bearing of different sizes and the thrust resistance of the inner ring 22.

[0043] In this embodiment, Figure 1 As shown, a fixing frame 24 is provided below the first fixing plate 1 , and both the first fixing plate 1 and the second fixing plate 2 are connected to the fixing frame 24 .

[0044] Principle and effect of the above technical solution:

[0045] The fixing frame 24 can support the first fixing plate 1 and the second fixing plate 2 .

[0046] A testing method for a dynamic life tester of a spherical bearing for aerospace use comprises the following steps:

[0047] S1: Pre-positioning; put the spherical bearing on the fixed shaft 4, and connect the fixed shaft 4 to the first fixed plate 1 and the second fixed plate 2; control the push cylinder 25 to push the arc block 10 against the inner wall of the inner ring 22 of the spherical bearing; control the telescopic shaft of the fixed cylinder 18 to extend, so that the clamping member 6 on the sliding tube quickly approaches the outer ring 23 of the spherical bearing, and stop the movement of the telescopic shaft of the fixed cylinder 18;

[0048] S2: Test the anti-deformation force of the edge of the outer ring 23 of the spherical bearing; control the rotating motor 7, the twisting motor 5, the bending cylinder 8, the flipping motor 61 and the clamping cylinder 64, so that the clamping plate 63 and the clamping plate 65 clamp the edge of the outer ring 23 of the spherical bearing; stop the movement of the rotating motor 7, the twisting motor 5, the flipping motor 61 and the clamping cylinder 64, and only control the bending cylinder 8 to contract, and the detection unit tests the range of the anti-deformation force that the edge of the outer ring 23 of the spherical bearing can withstand;

[0049] S3: Test the torsional force of the edge of the outer ring 23 of the spherical bearing; push the cylinder 25 to still press against the inner wall of the inner ring 22 of the spherical bearing; control the rotation motor 7 to rotate, the twisting motor 5, the bending cylinder 8 to move, the flipping motor 61 to rotate and the clamping cylinder 64 to clamp the clamping plate 63 and the clamping plate 65 on both sides of the outer ring 23 of the spherical bearing respectively; stop the rotation of the bending cylinder 8, the rotation motor 7, the flipping motor 61 and the movement of the clamping cylinder 64; drive the twisting motor 5 to apply torsional force to both sides of the outer ring 23 of the spherical bearing; the detection unit tests the range of torsional force that the edge of the outer ring 23 of the spherical bearing can withstand;

[0050] S4: Test the thrust resistance of the edge of the inner ring 22 of the spherical bearing; stop the rotation of the motor 7, the twisting motor 5, the edge-breaking cylinder 8, the rotation of the flipping motor 61 and the movement of the clamping cylinder 64; control the push cylinder 25 to retract the telescopic shaft, and the gear 14 synchronously drives the arc-shaped toothed plate 13 to clamp and push the edge of the inner ring 22 of the spherical bearing upward under the action of the long toothed plate 16 and the block 15 on the telescopic shaft; the detection unit tests the range of thrust resistance of the edge of the inner ring 22 of the spherical bearing;

[0051] S5: Processing and verification of test results.

[0052] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A dynamic life test machine for spherical bearings for aerospace use. Features: It comprises a first fixed disk, a second fixed disk and several fixed tubes circumferentially arranged therebetween; a fixed shaft is coaxially connected between the first fixed disk and the second fixed disk; the fixed shaft is used to fix the inner ring of the joint bearing; a torsion motor is provided on the side of the fixed tube close to the coaxial line of the first fixed disk; the power end of the torsion motor is connected to a clamping piece; the clamping piece is used to clamp the outer ring of the joint bearing; the clamping piece is provided with a detection unit for testing the outer ring and inner ring of the joint bearing; a rotating motor is provided on the fixed tube; the power end of the rotating motor is vertically connected to a bending cylinder; the rotating motor can drive the bending cylinder to swing; the torsion motor is coaxially connected to the telescopic shaft of the bending cylinder; the clamping piece comprises a flipping motor vertically connected to the power end of the torsion motor; the power end of the flipping motor is connected to a clamping block; a clamping plate is provided on one side of the clamping block; the clamp A clamping cylinder is provided on the outer wall of the holding plate; the telescopic shaft of the clamping cylinder passes through the outer wall of the clamping plate and is connected with a clamping plate; the two ends of the fixed shaft are respectively connected with the first fixed plate and the second fixed plate; a plurality of square grooves corresponding to the flip motor are opened in the circumference of the fixed shaft; a pushing cylinder facing the inner ring of the spherical bearing is provided in the square groove; an arc block for pressing against the inner wall of the inner ring of the spherical bearing is connected to the telescopic shaft of the pushing cylinder; bending plates for pressing against the inner edge of the inner ring of the spherical bearing are hinged on both sides of the arc block; an arc plate is provided on the side of the bent plate facing the fixed shaft; an arc tooth plate is provided on the side of the arc plate close to the pushing cylinder; two sets of gears are rotatably connected to the side walls of the square groove; the number of gears in each set is odd; the gears are meshed with the arc tooth plate; a square block is sleeved on the telescopic shaft of the pushing cylinder; long tooth plates meshing with the gears are provided on both sides of the square block.

2. A dynamic life tester for aerospace spherical bearings according to claim 1, Features: One end of the fixed tube is hinged to the first fixed disk; an annular groove is opened in the second fixed disk; the side walls of the annular groove are circumferentially provided with fixed cylinders facing the fixed axis; a sliding rod hinged to the telescopic axis of the fixed cylinder is slidably arranged in the tube at the other end of the fixed tube.

3. The dynamic life test machine for aerospace spherical bearings according to claim 2, Features: It also includes a fixing frame for fixing the first fixing plate and the second fixing plate.

4. The testing method of a dynamic life test machine for aerospace spherical bearings according to claim 3, It is characterized in that The following steps are involved: S1: Pre-positioning; insert the inner ring of the spherical bearing onto the fixed shaft, and connect the fixed shaft to the first fixed plate and the second fixed plate; control the pushing cylinder to push the arc block against the inner wall of the inner ring of the spherical bearing; control the telescopic shaft of the fixed cylinder to extend, so that the clamping piece on the fixed pipe quickly approaches the outer ring of the spherical bearing, and stops the movement of the telescopic shaft of the fixed cylinder; S2: Testing the anti-deformation force of the outer ring edge of the spherical bearing; controlling the rotation of the rotating motor, the movement of the twisting motor, the bending cylinder, the rotation of the flipping motor and the clamping cylinder, so that the clamping plate and the clamping plate clamp the outer ring edge of the spherical bearing; stopping the movement of the rotating motor, the twisting motor, the flipping motor and the clamping cylinder, and only controlling the bending cylinder to contract, and the detection unit tests the range of the anti-deformation force that the outer ring edge of the spherical bearing can withstand; S3: Test the torsional force of the edge of the outer ring of the spherical bearing; the pushing cylinder is still pressed against the inner wall of the inner ring of the spherical bearing; control the rotation of the rotating motor, the movement of the twisting motor, the bending cylinder, the rotation of the flipping motor and the clamping cylinder, so that the clamping plate and the clamping plate are clamped on both sides of the outer ring of the spherical bearing respectively; stop the rotation of the bending cylinder, the rotating motor, the flipping motor and the movement of the clamping cylinder; drive the twisting motor to apply torsional force to both sides of the outer ring of the spherical bearing; the detection unit tests the range of torsional force that the edge of the outer ring of the spherical bearing can withstand; S4: Test the thrust resistance of the inner ring edge of the spherical bearing; stop the rotation of the rotating motor, twisting motor, edge-breaking cylinder, flipping motor and the movement of the clamping cylinder; control the pushing cylinder to retract the telescopic shaft, and the gear synchronously drives the arc-shaped toothed plate to clamp and push the inner ring edge of the spherical bearing under the action of the long toothed plate block on the telescopic shaft; the detection unit tests the range of thrust resistance of the inner ring edge of the spherical bearing; S5: Processing and verification of test results.

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