A detection device and method for detecting the anti-fracture strength of each pillar of a powder metallurgy part with multiple pillars

Abstract

The present invention discloses a detection device and method for detecting the anti-fracture strength of each support pillar of a powder metallurgy part with multiple support pillars. The present invention relates to the technical field of detecting the anti-fracture strength of the support rods of parts. It includes an arch-shaped frame fixedly arranged on the workbench surface, and a tooling assembly arranged on the bottom surface of the cross beam of the arch-shaped frame for installing a powder metallurgy part with multiple support rods. Two pressure sensor installation components are arranged on the workbench surface, and the two pressure sensor installation components are respectively located on the left and right sides of the tooling assembly; a driving and impact assembly for driving the pressure sensor to move horizontally and vertically and for impacting the support pillar is also arranged on the workbench and located between the two pressure sensor installation components. The beneficial effects of the present invention are: greatly shortening the detection time for the four support rods of a single part and greatly improving the detection efficiency of the anti-fracture strength of the four support rods of the part.

Description

Technical Field

[0001] The present invention relates to the technical field of detecting the anti-fracture strength of a support rod of a part, in particular to a detection device and method for detecting the anti-fracture strength of each support rod of a powder metallurgy part with multiple supports. Background Art

[0002] The production process of powder metallurgy parts is: first fill a certain amount of metal powder into the mold cavity, and then pressurize the metal powder inside the mold through the mold to obtain a brittle blank after pressurization; then put the brittle blank into a sintering furnace, and sinter the brittle blank through the sintering furnace to obtain a powder metallurgy part with a certain mechanical strength.

[0003] A workshop modified the existing mold in the workshop according to the drawings provided by the customer to produce the following Figures 1 to 2 The multi-pillar powder metallurgy part shown includes a disc 1, a center hole 2 is opened in the middle of the disc 1 and along its axial direction, a keyway 3 is opened on the inner wall of the center hole 2, and four pillars 4 are evenly fixed on the cylindrical surface of the disc 1 and along its circumferential direction. The pillars 4 are arranged along the radial direction of the disc 1.

[0004] Among them, the four pillars 4 in this multi-pillar powder metallurgy part play the role of transmitting power in a certain toggle mechanism. Since the four pillars 4 of the part play an important role, workers need to test the fracture strength of the four pillars 4 of each part [the purpose of the test is to prevent the pillars 4 of the part from breaking off from the disc 1 during the actual use of the part by the customer after the part is delivered to the customer, so the fracture strength of the four pillars 4 of the part needs to be tested in advance]. After the test, the workers can deliver the qualified parts to the customers and scrap the unqualified parts.

[0005] At present, the workshop adopts Figure 3 The testing mechanism shown is used to test the fracture strength of the four pillars 4 of each part. The testing mechanism includes a workbench 5, an arch frame 6 fixed on the workbench 5, and a tooling assembly 7 for fixing the powder metallurgy parts with multiple pillars is provided on the bottom surface of the crossbeam of the arch frame 6. A screw module 8 is provided on the workbench 5, and a connecting plate 9 located directly below the tooling assembly 7 is fixed on the left end surface of the nut of the screw module 8. A reciprocating cylinder 10 is fixed on the bottom surface of the connecting plate 9. The piston rod of the reciprocating cylinder 10 passes through the connecting plate 9 upward, and an impact head 11 is connected to the extended end; a guide rail 12 located on the left side of the connecting plate 9 is also fixed on the workbench 5, and a slider is slidably installed on the guide rail 12. A moving plate 13 is fixed on the top surface of the slider, and a threaded rod 14 located on the left side of the tooling assembly 7 is fixed on the top surface of the moving plate 13;

[0006] Among them, the threaded rod 14 is provided with a lifting plate 15, which extends to the right, and a pressure sensor 16 is fixed on the bottom surface of the extended end. The threaded rod 14 is provided with a vertical spring 17, and the upper and lower ends of the vertical spring 17 are respectively fixed on the lifting plate 15 and the movable plate 13. The upper end of the threaded rod 14 is threadedly connected to the handle 18, and a pressure rod 19 is fixed on the bottom surface of the handle 18. The pressure rod 19 presses on the top surface of the lifting plate 15.

[0007] Among them, the tooling assembly 7 includes a bracket 20 fixed on the bottom surface of the crossbeam of the arch frame 6, and a stepper motor 21 is fixed on the bracket 20. The output shaft of the stepper motor 21 is set forward, and a baffle 22 is fixed on the output shaft. A limiting column 23 is fixed on the front end surface of the baffle 22, and a flat key 24 is fixed on the cylindrical surface of the limiting column 23 along its axial direction.

[0008] The method by which workers use this testing mechanism to test the fracture strength of the four pillars 4 of each part in the workshop is as follows:

[0009] S1, the worker takes out a Figures 1 to 2 In the part to be inspected, a worker fits the part's center hole 2 and keyway 3 onto the limit post 23 and flat key 24 of the tooling assembly 7, and places the part's disc 1 against the baffle 22, thus completing the installation. At this point, the pressure sensor 16 is located just above and to the left of the part's left support 4.

[0010] S2. Press the pressure sensor 16 onto the top surface of the first pillar 4. The specific operation steps are as follows:

[0011] S21. The worker pushes the movable plate 13 to the right. The movable plate 13 moves to the right along the guide rail 12. At the same time, the movable plate 13 also drives the threaded rod 14, the vertical spring 17, the lifting plate 15, and the pressure sensor 16 to move to the right synchronously. When the pressure sensor 16 moves to the top of the support 4, the worker stops pushing the movable plate 13.

[0012] S22. The worker rotates handle 18 downward. Handle 18, in cooperation with the threads of threaded rod 14, moves downward along threaded rod 14. Handle 18 drives pressure rod 19 downward. Pressure rod 19 presses down lifting plate 15. Lifting plate 15 compresses vertical spring 17. Simultaneously, lifting plate 15 also drives pressure sensor 16 downward. When pressure sensor 16 presses against the top surface of support 4, the worker stops rotating handle 18 downward. At this time, pressure sensor 16 transmits a pressure signal to the controller.

[0013] S3. Control the motor of the lead screw module 8 to rotate forward. The nut sleeve of the lead screw module 8 drives the connecting plate 9 to move upward. The connecting plate 9 drives the reciprocating cylinder 10 to move upward. When the connecting plate 9 moves to the upper limit position of the lead screw module 8, the support column 4 is within the impact stroke range of the impact head 11 of the reciprocating cylinder 10;

[0014] S4. Control the piston rod of the reciprocating cylinder 10 to perform reciprocating telescopic motion. When the piston rod of the reciprocating cylinder 10 extends upward, the piston rod drives the impact head 11 to impact the support column 4; when the piston rod of the reciprocating cylinder 10 retracts downward, the piston rod drives the impact head 11 to move downward; as the piston rod of the reciprocating cylinder 10 performs reciprocating telescopic motion, the impact head 11 is used to impact the support column 4 reciprocally;

[0015] If the pressure sensor 16 does not send a pressure signal to the controller before the impact test ends, it indicates that the support column 4 has been knocked off the disc 1 by the impact head 11. Furthermore, it indicates that the anti - fracture strength of the tested support column 4 does not meet the requirements. Then, it is determined that the part is a non - conforming product, and the worker removes the non - conforming product from the limit post 23;

[0016] If the pressure sensor 16 is still sending a pressure signal to the controller after the impact test ends, it indicates that the support column 4 has not been knocked off the disc 1 by the impact head 11. Furthermore, it indicates that the anti - fracture strength of the tested support column 4 meets the requirements. At this time, the next operation steps for the worker are:

[0017] S41. Control the motor of the lead screw module 8 to rotate in reverse. The nut sleeve of the lead screw module 8 drives the connecting plate 9 to move downward. The connecting plate 9 drives the reciprocating cylinder 10 and the impact head 11 to move downward, so that the impact head 11 moves to the initial position (the purpose of resetting the impact head 11 is to prevent the impact head 11 from interfering with the support column 4 of the part during the subsequent rotation process);

[0018] S42. The worker rotates the handle 18 upward. Under the elastic restoring force of the vertical spring 17, the lifting plate 15 moves upward along the threaded rod 14. The lifting plate 15 drives the pressure sensor 16 to move upward; then the worker pushes the moving plate 13 to the left. The moving plate 13 drives the pressure sensor 16 to move to the left, so that the pressure sensor 16 moves to the initial position (the purpose of resetting the pressure sensor 16 is to prevent the pressure sensor 16 from interfering with the support column 4 during the subsequent rotation process);

[0019] S43. The worker starts the stepper motor 21 that controls the tooling assembly. The stepper motor 21 drives the baffle 22 and the limit post 23 to rotate synchronously. The limit post 23 drives the part to rotate, and the part drives the pillar 4 on it to rotate. When the part rotates to the set angle, the second pillar 4 of the part moves directly above the impact head 11. The worker repeats the operations in steps S2 to S42 once, thus completing the anti-fracture strength test on the second pillar 4 of the part.

[0020] S5. The worker repeats the operation in step S4 twice, thus completing the anti-fracture strength tests on the other two pillars 4 of the part respectively, and finally completing the anti-fracture strength tests on the four pillars 4 of one part.

[0021] S6. The worker repeats the operations in steps S1 to S5 many times, thus completing the anti-fracture strength tests on the four pillars 4 of each part in the workshop.

[0022] However, although this detection mechanism can perform anti-fracture strength tests on the four pillars 4 of the part, technically, the following technical defects are still reflected:

[0023] I. In step S2, before performing the anti-fracture strength test on the pillar 4, the worker needs to first push the moving plate 13 to the right so that the pressure sensor 16 moves directly above the pillar 4, and then rotate the handle 18 downward, and then the pressure sensor 16 can be pressed onto the top surface of the pillar 4. In step S3, the worker needs to control the motor of the lead screw module 8 to rotate forward so that the pillar 4 to be tested can enter the impact stroke range of the impact head 11 of the reciprocating cylinder 10, and finally a pillar 4 can be in the detection position.

[0024] It can be seen that two processes are required to press the pressure sensor 16 onto the top surface of the pillar 4; and one more process is required to make the pillar 4 to be tested enter the impact stroke range of the impact head 11. That is to say, a total of three processes are required to make a pillar 4 in the detection position, which undoubtedly increases the detection time of the anti-fracture strength of a pillar 4 of the part. And there are still three pillars 4 to be tested on the part, which undoubtedly reduces the detection efficiency of the anti-fracture strength of the four pillars 4 of the part.

[0025] II. Up to 100 - 121 parts are required to be tested every day, and this detection mechanism can only perform anti-fracture strength tests on the four pillars 4 of the parts one by one, which takes a long time to complete all the tests on the four pillars 4 of a single part, and then takes a long time to complete all the tests on the pillars 4 of all the parts in the workshop, further reducing the detection efficiency of the anti-fracture strength of the four pillars 4 of the part.

[0026] Therefore, there is an urgent need for a detection device and method that can greatly shorten the detection time of the four struts of a single part and greatly improve the detection efficiency of the anti-fracture strength of the four struts of the part. Summary of the Invention

[0027] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a detection device and method for detecting the anti-fracture strength of each strut of a powder metallurgy part with multiple struts, which can greatly shorten the detection time of the four struts of a single part and greatly improve the detection efficiency of the anti-fracture strength of the four struts of the part.

[0028] The purpose of the present invention is achieved through the following technical solutions: A detection device for detecting the anti-fracture strength of each strut of a powder metallurgy part with multiple struts, which includes an arch frame fixed on the workbench surface, and a tooling component arranged on the bottom surface of the crossbeam of the arch frame for installing the powder metallurgy part with multiple struts. Two pressure sensor installation components are arranged on the workbench surface, and the two pressure sensor installation components are respectively located on the left and right sides of the tooling component;

[0029] The pressure sensor installation component on the left side includes an L-shaped plate fixed on the workbench, a guide rod sliding through the upper end of the L-shaped plate. The left end of the guide rod is fixed with a movable plate, and the left end of the movable plate is rotatably installed with a first wheel. A horizontal spring is sleeved on the guide rod, and the left and right ends of the horizontal spring are respectively fixed on the movable plate and the L-shaped plate. The movable plate extends upward, and a vertical rod located on the left side of the tooling component is fixed on the extended end. A floating plate and a first vertical spring are sleeved on the vertical rod. The floating plate extends to the right, and a pressure sensor is fixed on the bottom surface of the extended end. The upper and lower ends of the first vertical spring are respectively fixed on the floating plate and the movable plate. The top of the vertical rod is hinged with a bent plate through a shaft. The left half of the bent plate is located on the left side of the vertical rod, and the bottom edge of the right half of the bent plate supports on the top surface of the floating plate;

[0030] A drive and impact component for driving the pressure sensor to move horizontally and vertically and for impacting the strut is also arranged on the workbench between the two pressure sensor installation components. The drive and impact component includes a jacking cylinder fixed on the bottom surface of the workbench and a jacking plate fixed on the piston rod of the jacking cylinder;

[0031] The left and right ends of the jacking plate respectively penetrate through the L-shaped plates of the two pressure sensor installation components. Vertical plates are fixed on the left and right ends of the jacking plate. Inclined plates are fixed on the tops of the two vertical plates. The two inclined plates are respectively in contact with the two first wheels. Cylindrical rods are fixed on the tops of the two inclined plates. The top of the cylindrical rod is rotatably installed with a second wheel. The second wheel is located directly below the left half of the bent plate. A gantry is fixed on the top surface of the jacking plate between the two vertical plates. Impact mechanisms are arranged on the left and right ends of the gantry.

[0032] On the bottom surface of the workbench and at its four corners, there are support legs fixed on the ground.

[0033] The tooling assembly includes a bracket fixed on the bottom surface of the crossbeam of the arched frame. A self-locking motor is fixed on the bracket. The output shaft of the self-locking motor is arranged forward, and a baffle is fixed on the output shaft. A limit post is fixed on the front end face of the baffle, and a flat key arranged along its axial direction is fixed on the column surface of the limit post.

[0034] In the L-shaped plate of the pressure sensor mounting assembly, a vertically arranged strip-shaped groove is opened, and the jacking plate penetrates through the strip-shaped groove.

[0035] The length of the right half of the bent plate of the pressure sensor mounting assembly is less than that of the left half, and the weight of the right half of the bent plate is greater than that of the left half.

[0036] The two pressure sensor mounting assemblies are symmetrically arranged about the gantry left and right.

[0037] The impact mechanism on the left side includes a reciprocating cylinder fixed on the gantry. The piston rod of the reciprocating cylinder penetrates upward through the top wall of the gantry, and an impact head is fixed on the extending end.

[0038] The detection device further includes a controller, which is electrically connected to the reciprocating cylinder, the jacking cylinder, the self-locking motor, and the pressure sensor via signal lines.

[0039] A method for detecting the anti-fracture strength of each pillar of a multi-pillar powder metallurgy part includes the following steps:

[0040] S1. The worker takes out a part to be detected. The worker sleevs the central hole and the keyway of the part on the limit post and the flat key of the tooling assembly respectively, and abuts the disc of the part against the baffle, thus realizing the installation of the part. At this time, the pressure sensors of the two pressure sensor mounting assemblies are respectively outside the pillars on the left and right sides of the part;

[0041] S2. Make the pillars on the left and right sides of the part in the detection station. The specific operation steps are as follows:

[0042] S21. Control the piston rod of the jacking cylinder of the driving and impact assembly to extend upward. The piston rod drives the jacking plate to move upward. The jacking plate drives the gantry and the two vertical plates to move upward synchronously. The gantry drives the two impact mechanisms thereon to move upward synchronously. The reciprocating cylinder and the impact head of the impact mechanism move upward synchronously. The two impact heads move respectively towards the two pillars on the left and right sides of the part;

[0043] Meanwhile, the two vertical plates drive the inclined plates connected thereto to move upward synchronously. The inclined plates drive the cylindrical rods to move upward, and the cylindrical rods drive the second wheels to move upward. The second wheels move toward the left half of the bent plate. At the same time, the inclined plates also push the first wheels to move gradually inward in the horizontal direction. The first wheels drive the movable plate to move gradually inward in the horizontal direction. The movable plate compresses the horizontal spring, and the movable plate also drives the vertical rod, the floating plate, the pressure sensor, the vertical spring, and the bent plate to move gradually inward in the horizontal direction. At this time, the two pressure sensors move respectively toward the columns on the left and right sides of the part in the horizontal direction.

[0044] S22. After the piston rod of the lifting cylinder extends upward by a certain distance, the two first wheels just come into contact with the inner end faces of the two vertical plates respectively, and the two second wheels come into contact with the bottom surfaces of the left halves of the two bent plates respectively.

[0045] S23. As the piston rod of the lifting cylinder continues to extend upward, the lifting plate drives the gantry and the two vertical plates to continue moving upward. The gantry drives the two impact mechanisms thereon to continue moving upward, and the reciprocating cylinders and the impact heads of the impact mechanisms continue moving upward.

[0046] Meanwhile, the two vertical plates continue to move upward relative to the stationary first wheels. The vertical plates drive the inclined plates, the cylindrical rods, and the second wheels to move upward synchronously. The second wheels push the left half of the bent plate upward. When the bent plate is stressed, the bent plate rotates inward around the pin shaft, and the right half of the bent plate gradually presses down on the floating plate. The floating plate gradually compresses the vertical spring. At the same time, the floating plate also drives the pressure sensor to move gradually toward the top surface of the column in the vertical direction.

[0047] When the piston rod of the lifting cylinder is fully extended, the columns on the left and right sides of the part are both in the detection station. At this time, the columns on the left and right sides of the part are respectively within the impact stroke ranges of the impact heads of the two impact mechanisms. At the same time, the two pressure sensors are respectively pressed on the top surfaces of the columns on the left and right sides of the part, and the two pressure sensors transmit pressure signals to the controller.

[0048] S3. Control the piston rods of the reciprocating cylinders of the two impact mechanisms to perform reciprocating telescopic movements. When the piston rods of the reciprocating cylinders extend upward, the piston rods drive the impact heads to impact the columns. When the piston rods of the reciprocating cylinders retract downward, the piston rods drive the impact heads to move downward. As the piston rods of the two reciprocating cylinders perform reciprocating telescopic movements, the reciprocating impacts on the columns on the left and right sides of the part are realized by using the two impact heads respectively.

[0049] If, before the impact test ends, one of the pressure sensors fails to send a pressure signal to the controller, it indicates that the strut corresponding to this pressure sensor has been broken off the disc by the impact head. This further indicates that the anti-fracture strength of the strut being tested does not meet the requirements. Consequently, it is determined that the part is a non-conforming product, and the worker removes the non-conforming product from the limit post.

[0050] If, after the impact test ends, both pressure sensors are still sending pressure signals to the controller, it indicates that the struts on both the left and right sides of the part have not been broken off the disc by the impact head. This further indicates that the anti-fracture strengths of the two struts on the left and right sides of the part meet the requirements. At this time, the next operation steps for the worker are as follows:

[0051] S31. Control the reciprocating cylinder to close, and then control the piston rod of the lifting cylinder to retract downward. The piston rod drives the lifting plate to move downward, the lifting plate drives the gantry and the two vertical plates to move downward synchronously, the gantry drives the two impact mechanisms to move downward synchronously, and the reciprocating cylinder and the impact head of the impact mechanism move downward synchronously.

[0052] At the same time, the vertical plate drives the inclined plate, the cylindrical rod, and the second wheel to move downward synchronously. During the process of the second wheel separating from the left half of the bent plate, the bent plate rotates outward around the pin shaft. Under the elastic restoring force of the vertical spring in the compressed state, the floating plate drives the pressure sensor to gradually move upward in the vertical direction, so that the pressure sensor is separated from the strut in the vertical direction.

[0053] When the inclined plate moves to be opposite to the first wheel left and right, the first wheel presses against the inclined plate. Under the elastic restoring force of the horizontal spring in the compressed state, the first wheel drives the movable plate to gradually move outward. The movable plate also drives the vertical rod, the floating plate, the pressure sensor, the vertical spring, and the bent plate to gradually move outward in the horizontal direction, so that the pressure sensor is gradually separated from the strut in the horizontal direction.

[0054] When the piston rod of the lifting cylinder is fully retracted, the two impact heads move to the initial positions. At the same time, the two pressure sensors move to the outside of the struts on the left and right sides of the part respectively.

[0055] S32. Control the self-locking motor of the tooling assembly to start. The self-locking motor drives the baffle and the limit post to rotate synchronously. The limit post drives the part to rotate, and the part drives the struts on it to rotate. When the part rotates 90°, the controller controls the self-locking motor to turn off. The other two struts of the part move to directly above the impact heads respectively. The worker repeats the operations in steps S2~S31 once in this way, so as to detect the anti-fracture strengths of the other two struts of the part, and finally complete the anti-fracture strength detection of the four struts of one part.

[0056] S4. The worker repeats the operations in steps S1 to S3 multiple times, thereby completing the anti - fracture strength detection of the four struts of each part in the workshop.

[0057] The present invention has the following advantages: greatly shortening the detection time of the four struts of a single part and greatly improving the detection efficiency of the anti - fracture strength of the four struts of the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a schematic structural diagram of a powder - metallurgy part with multiple struts;

[0059] Figure 2 is Figure 1 the front view of;

[0060] Figure 3 It is a schematic structural diagram of a detection mechanism in the prior art;

[0061] Figure 4 is Figure 3 the schematic A - A cross - section diagram of;

[0062] Figure 5 It is a schematic diagram of the installation of a part by a detection mechanism in the prior art;

[0063] Figure 6 It is a schematic diagram of the pressure sensor of a detection mechanism in the prior art moving directly above the strut;

[0064] Figure 7 It is a schematic diagram of the pressure sensor of a detection mechanism in the prior art pressing on the top surface of the strut;

[0065] Figure 8 It is a schematic diagram of a detection mechanism in the prior art enabling the strut to enter the impact stroke range of the impact head of the reciprocating cylinder;

[0066] Figure 9 It is a schematic diagram of the impact head of a detection mechanism in the prior art impacting the strut;

[0067] Figure 10 It is a schematic structural diagram of the present invention;

[0068] Figure 11 is Figure 10 the partial sectional view of;

[0069] Figure 12 It is a schematic structural diagram of the pressure - sensor mounting assembly of the present invention;

[0070] Figure 13 is Figure 12 the schematic view in the direction B of;

[0071] Figure 14 is Figure 12Schematic diagram of local anatomy;

[0072] Figure 15 is Figure 12 Schematic diagram of the connection between the bent plate and the pin shaft in

[0073] Figure 16 Schematic diagram of the structure of the driving and impact components of the present invention;

[0074] Figure 17 is Figure 16 Schematic diagram in the C direction of

[0075] Figure 18 is Figure 16 Schematic diagram of local anatomy of

[0076] Figure 19 Schematic diagram of the structure of the arched frame and the tooling components of the present invention;

[0077] Figure 20 is Figure 19 Schematic diagram of the D-D section of

[0078] Figure 21 Schematic diagram of the present invention with the parts installed;

[0079] Figure 22 is Figure 21 Schematic diagram of the E-E section of

[0080] Figure 23 Schematic diagram of the movement of the second wheel and the movable plate;

[0081] Figure 24 Schematic diagram of two first wheels respectively contacting the inner end surfaces of two vertical plates;

[0082] Figure 25 Schematic diagram of the movement of the bent plate and the pressure sensor;

[0083] Figure 26 Schematic diagram of two pressure sensors respectively pressing on the top surfaces of the columns on the left and right sides of the part;

[0084] Figure 27 Schematic diagram of two impact heads respectively performing reciprocating impacts on the columns on the left and right sides of the part;

[0085] In the figure:

[0086] 1 - Disc, 2 - Central hole, 3 - Keyway, 4 - Column;

[0087] 5-Workbench, 6-Arch frame, 7-Tooling assembly, 8-Screw module, 9-Connecting plate, 10-Reciprocating cylinder, 11-Impact head, 12-Guide rail, 13-Moving plate, 14-Threaded rod, 15-Lifting plate; 16-Pressure sensor, 17-Vertical spring, 18-Handle, 19-Press rod, 20-Bracket, 21-Stepping motor, 22-Baffle, 23-Limiting column, 24-Flat key;

[0088] 25-pressure sensor mounting assembly, 26-L plate, 27-guide rod, 28-movable plate, 29-first wheel, 30-horizontal spring, 31-vertical rod, 32-floating plate, 33-vertical spring, 34-pin, 35-bending plate;

[0089] 36 - lifting cylinder, 37 - lifting plate, 38 - vertical plate, 39 - inclined plate, 40 - cylindrical rod, 41 - second wheel, 42 - impact mechanism, 43 - self-locking motor. DETAILED DESCRIPTION

[0090] The present invention will be further described below with reference to the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0091] like Figures 10 to 20 As shown, a testing device for testing the fracture strength of each pillar of a powder metallurgy part with multiple pillars includes an arch frame 6 fixedly mounted on the surface of a workbench 5, and a tooling assembly 7 disposed on the bottom surface of a crossbeam of the arch frame 6 for mounting the powder metallurgy part with multiple pillars. Two pressure sensor mounting assemblies 25 are disposed on the surface of the workbench 5, and the two pressure sensor mounting assemblies 25 are located on the left and right sides of the tooling assembly 7, respectively. Legs supporting the ground are fixedly mounted on the bottom surface of the workbench 5 and located at its four corners. The tooling assembly 7 includes a bracket 20 fixedly mounted on the bottom surface of the crossbeam of the arch frame 6, a self-locking motor 43 fixedly mounted on the bracket 20, the output shaft of the self-locking motor 43 being arranged forward, and a baffle 22 fixedly mounted on the output shaft, a limit column 23 fixedly mounted on the front end surface of the baffle 22, and a flat key 24 fixedly mounted along the axial direction of the limit column 23 fixedly mounted on the cylindrical surface.

[0092] The pressure sensor mounting assembly 25 located on the left side includes an L-shaped plate 26 fixed to the workbench 5, a guide rod 27 slidably penetrating through the upper end of the L-shaped plate 26. A movable plate 28 is fixed to the left end of the guide rod 27. A first wheel 29 is rotatably mounted on the left end of the movable plate 28. A horizontal spring 30 is sleeved on the guide rod 27, and the left and right ends of the horizontal spring 30 are respectively fixed to the movable plate 28 and the L-shaped plate 26. The movable plate 28 extends upward, and a vertical rod 31 located on the left side of the tooling assembly 7 is fixed to the extending end. A floating plate 32 and a first vertical spring 33 are sleeved on the vertical rod 31. The floating plate 32 extends to the right, and a pressure sensor 16 is fixed to the bottom surface of the extending end. The upper and lower ends of the first vertical spring 33 are respectively fixed to the floating plate 32 and the movable plate 28. The top of the vertical rod 31 is hinged with a bent plate 35 through a shaft 34. The left half of the bent plate 35 is located on the left side of the vertical rod 31, and the bottom edge of the right half of the bent plate 35 supports on the top surface of the floating plate 32.

[0093] The two pressure sensor mounting assemblies 25 are symmetrically arranged about the gantry left and right. A vertically arranged strip-shaped groove is formed in the L-shaped plate 26 of the pressure sensor mounting assembly 25, and the lifting plate 37 penetrates through the strip-shaped groove. The length of the right half of the bent plate 35 of the pressure sensor mounting assembly 25 is less than that of the left half, and the weight of the right half of the bent plate 35 is greater than that of the left half.

[0094] A driving and impact assembly for driving the pressure sensor 16 to move horizontally and vertically and for impacting the support column 4 is further provided on the workbench 5 between the two pressure sensor mounting assemblies 25. The driving and impact assembly includes a lifting cylinder 36 fixed to the bottom surface of the workbench 5 and a lifting plate 37 fixed to the piston rod of the lifting cylinder 36.

[0095] The left and right ends of the lifting plate 37 respectively penetrate through the L-shaped plates 26 of the two pressure sensor mounting assemblies 25. Vertical plates 38 are fixed to the left and right ends of the lifting plate 37. Inclined plates 39 are fixed to the tops of the two vertical plates 38. The two inclined plates 39 are respectively in contact with the two first wheels 29. Cylindrical rods 40 are fixed to the tops of the two inclined plates 39. A second wheel 41 is rotatably mounted on the top of the cylindrical rod 40. The second wheel 41 is located directly below the left half of the bent plate 35. A gantry is fixed to the top surface of the lifting plate 37 between the two vertical plates 38. Impact mechanisms 42 are provided on the left and right ends of the gantry. The impact mechanism 42 located on the left side includes a reciprocating cylinder 10 fixed to the gantry. The piston rod of the reciprocating cylinder 10 penetrates upward through the top wall of the gantry, and an impact head 11 is fixed to the extending end.

[0096] The detection device further includes a controller, which is electrically connected to the reciprocating cylinder 10, the lifting cylinder 36, the self-locking motor 43, and the pressure sensor 16 via signal lines. Workers can control the reciprocating telescopic movement of the piston rod of the reciprocating cylinder 10 through the controller, and can also control the telescopic movement of the piston rod of the lifting cylinder 36. At the same time, the start or stop of the self-locking motor 43 can also be controlled, thus facilitating the operation of the workers.

[0097] A method for detecting the fracture resistance strength of each pillar of a multi-pillar powder metallurgy part, which includes the following steps:

[0098] S1. Workers take out a part to be detected as shown in Figures 1 to 2 . The workers respectively sleeved the central hole 2 and the keyway 3 of the part on the limit post 23 and the flat key 24 of the tooling assembly 7, and abutted the disc 1 of the part against the baffle 22, thereby realizing the installation of the part, as shown in Figures 21 to 22 . At this time, the pressure sensors 16 of the two pressure sensor mounting assemblies 25 are respectively located outside the pillars 4 on the left and right sides of the part;

[0099] S2. Make the pillars 4 on the left and right sides of the part in the detection station, and its specific operation steps are as follows:

[0100] S21. Control the piston rod of the lifting cylinder 36 of the driving and impact assembly to extend upward. The piston rod drives the lifting plate 37 to move upward, and the lifting plate 37 drives the gantry and the two vertical plates 38 to move upward synchronously. The gantry drives the two impact mechanisms 42 thereon to move upward synchronously. The reciprocating cylinder 10 and the impact head 11 of the impact mechanism 42 move upward synchronously. The two impact heads 11 move respectively towards the two pillars 4 on the left and right sides of the part;

[0101] At the same time, the two vertical plates 38 respectively drive the inclined plates 39 connected thereto to move upward synchronously. The inclined plate 39 drives the cylindrical rod 40 to move upward, and the cylindrical rod 40 drives the second wheel 41 to move upward. The movement direction of the second wheel 41 is as shown by the hollow arrow in Figure 23 . The second wheel 41 moves towards the left half of the bending plate 35; at the same time, the inclined plate 39 also pushes the first wheel 29 to move gradually inward in the horizontal direction. The first wheel 29 drives the movable plate 28 to move gradually inward in the horizontal direction. The movement direction of the movable plate 28 is as shown by the solid arrow in Figure 23 . The movable plate 28 compresses the horizontal spring 30, and the movable plate 28 also drives the vertical rod 31, the floating plate 32, the pressure sensor 16, the vertical spring 33, and the bending plate 35 to move gradually inward in the horizontal direction. At this time, the two pressure sensors 16 both move respectively towards the pillars 4 on the left and right sides of the part in the horizontal direction;

[0102] S22. After the piston rod of the lifting cylinder 36 extends upward by a certain distance, the two first wheels 29 just come into contact with the inner end faces of the two vertical plates 38 respectively, as shown in Figure 24 shown, and the two second wheels 41 come into contact with the bottom surfaces of the left halves of the two bent plates 35 respectively, as shown in Figure 24 shown;

[0103] S23. As the piston rod of the lifting cylinder 36 continues to extend upward, the lifting plate 37 drives the gantry and the two vertical plates 38 to continue moving upward. The gantry drives the two impact mechanisms 42 thereon to continue moving upward, and the reciprocating cylinder 10 and the impact head 11 of the impact mechanism 42 continue to move upward;

[0104] At the same time, the two vertical plates 38 continue to move upward relative to the stationary first wheels 29. The vertical plates 38 drive the inclined plate 39, the cylindrical rod 40 and the second wheels 41 to move upward synchronously. The second wheels 41 push the left half of the bent plate 35 upward. When the bent plate 35 is stressed, the bent plate 35 rotates inward around the pin shaft 34. The rotation direction of the bent plate 35 is as shown by the solid arrow in Figure 25 The right half of the bent plate 35 gradually presses down the floating plate 32. The floating plate 32 gradually compresses the vertical spring 33 downward. At the same time, the floating plate 32 also drives the pressure sensor 16 to move gradually toward the top surface direction of the column 4 in the vertical direction. The movement direction of the pressure sensor 16 is as shown by the hollow arrow in Figure 25 shown;

[0105] When the piston rod of the lifting cylinder 36 is fully extended, the columns 4 on the left and right sides of the part are both in the detection stations. At this time, the columns 4 on the left and right sides of the part are respectively within the impact stroke ranges of the impact heads 11 of the two impact mechanisms 42. At the same time, the two pressure sensors 16 are respectively pressed on the top surfaces of the columns 4 on the left and right sides of the part, as shown in Figure 26 shown. The two pressure sensors 16 transmit the pressure signals to the controller;

[0106] Among them, it can be seen from step S2 that by only controlling the piston rod of the lifting cylinder 36 of the driving and impact assembly to extend upward, the two pressure sensors 16 can be respectively pressed on the columns 4 on the left and right sides of the part, and at the same time, the columns 4 on the left and right sides of the part are respectively within the impact stroke ranges of the impact heads 11 of the two impact mechanisms 42. That is to say, through one action of the lifting cylinder 36, the columns 4 on the left and right sides of the part can quickly and automatically enter the detection stations.

[0107] It can be seen from this that this detection device compared with Figures 3 to 9The detection method shown does not require three processes to place a strut 4 of a part at the detection station. Instead, with just one starting action of the lifting cylinder 36, the struts 4 on both the left and right sides of the part can quickly and automatically enter the detection station, thus greatly shortening the subsequent detection time for the anti-fracture strength of the struts 4 of the part, and further greatly improving the detection efficiency for the anti-fracture strength of the four struts 4 of the part.

[0108] S3. Control the piston rod of the reciprocating cylinder 10 of the two impact mechanisms 42 to perform reciprocating telescopic movements. When the piston rod of the reciprocating cylinder 10 extends upward, the piston rod drives the impact head 11 to impact the strut 4. When the piston rod of the reciprocating cylinder 10 retracts downward, the piston rod drives the impact head 11 to move downward. As the piston rods of the two reciprocating cylinders 10 perform reciprocating telescopic movements, the two impact heads 11 are respectively used to reciprocally impact the struts 4 on the left and right sides of the part, as Figure 27 shown;

[0109] If before the impact test ends, one of the pressure sensors 16 does not send a pressure signal to the controller, it indicates that the strut 4 corresponding to this pressure sensor 16 has been broken off the disc 1 by the impact head 11, further indicating that the anti-fracture strength of the detected strut 4 does not meet the requirements, and further determining that this part is a non-conforming product. The worker removes the non-conforming product from the limit post 23;

[0110] If after the impact test ends, both pressure sensors 16 are still sending pressure signals to the controller, it indicates that the struts 4 on both the left and right sides of the part have not been broken off the disc 1 by the impact heads 11, further indicating that the anti-fracture strengths of the two struts 4 on both the left and right sides of the part meet the requirements. At this time, the next operation steps for the worker are:

[0111] S31. Control the reciprocating cylinder 10 to close, and then control the piston rod of the lifting cylinder 36 to retract downward. The piston rod drives the lifting plate 37 to move downward, and the lifting plate 37 drives the gantry and the two vertical plates 38 to move downward synchronously. The gantry drives the two impact mechanisms 42 to move downward synchronously, and the reciprocating cylinder 10 and the impact head 11 of the impact mechanism 42 move downward synchronously;

[0112] At the same time, the vertical plate 38 drives the inclined plate 39, the cylindrical rod 40, and the second wheel 41 to move downward synchronously. During the process of the second wheel 41 separating from the left half of the bending plate 35, the bending plate 35 rotates outward around the pin shaft 34. Under the elastic restoring force of the vertical spring 33 in the compressed state, the floating plate 32 drives the pressure sensor 16 to gradually move upward in the vertical direction, so that the pressure sensor 16 is separated from the strut 4 in the vertical direction;

[0113] When the inclined plate 39 moves to the position opposite to the first wheel 29 left and right, the first wheel 29 presses against the inclined plate 39. Under the elastic restoring force of the horizontal spring 30 in the compressed state, the first wheel 29 drives the movable plate 28 to gradually move outward. The movable plate 28 also drives the vertical rod 31, the floating plate 32, the pressure sensor 16, the vertical spring 33, and the bent plate 35 to gradually move outward in the horizontal direction, so that the pressure sensor 16 and the support column 4 are gradually separated in the horizontal direction;

[0114] After the piston rod of the lifting cylinder 36 is fully retracted, the two impact heads 11 move to the initial position [the purpose of resetting the impact heads 11 is to prevent the impact heads 11 from interfering with the support column 4 of the part during the subsequent rotation process]. At the same time, the two pressure sensors 16 respectively move to the outside of the support columns 4 on the left and right sides of the part [the purpose of resetting the pressure sensors 16 is to prevent the pressure sensors 16 from interfering with the support column 4 during the subsequent rotation process of the part];

[0115] S32. Start the self-locking motor 43 of the control tooling assembly. The self-locking motor 43 drives the baffle 22 and the limit post 23 to rotate synchronously. The limit post 23 drives the part to rotate. The part drives the support column 4 thereon to rotate. When the part rotates 90°, the controller controls the self-locking motor 43 to turn off. The other two support columns 4 of the part respectively move to directly above the impact heads 11. The worker repeats the operations of steps S2~S31 once in this way, so as to perform the anti-fracture strength test on the other two support columns 4 of the part, and thus finally complete the anti-fracture strength test on the four support columns 4 of one part;

[0116] S4. The worker repeats the operations of steps S1~S3 many times in this way, so as to complete the anti-fracture strength test on the four support columns 4 of each part in the workshop.

[0117] Among them, it can be seen from steps S1~S3 that this detection device, through the linkage cooperation of the self-locking motor 43 of the tooling assembly 7, the lifting cylinder 36 of the driving and impact assembly, and the two pressure sensor mounting assemblies 25, can simultaneously perform the anti-fracture strength test on two support columns 4 of the part at one time. Compared with the detection method as Figures 3 to 9 shown, there is no need for the worker to perform the anti-fracture strength test on the four support columns 4 of the part one by one, so as to complete the detection of all four support columns 4 of a single part in a short time, and further complete the detection of all the support columns 4 of the parts in the workshop in a short time, thus further greatly improving the detection efficiency of the anti-fracture strength of the four support columns 4 of the part.

Claims

1. A detection device for detecting the anti-fracture strength of each pillar of a powder metallurgy part with multiple pillars, characterized in that: It includes an arch-shaped frame (6) fixedly arranged on the workbench (5) surface, and a tooling assembly (7) arranged on the bottom surface of the crossbeam of the arch-shaped frame (6) for installing powder metallurgy parts with multiple rods. Two pressure sensor mounting assemblies (25) are arranged on the workbench (5) surface, and the two pressure sensor mounting assemblies (25) are respectively located on the left and right sides of the tooling assembly (7); The pressure sensor mounting assembly (25) on the left side includes an L-shaped plate (26) fixedly arranged on the workbench (5), a guide rod (27) sliding through the upper end of the L-shaped plate (26). A movable plate (28) is fixedly arranged at the left end of the guide rod (27). A first wheel (29) is rotatably installed at the left end of the movable plate (28). A horizontal spring (30) is sleeved on the guide rod (27), and the left and right ends of the horizontal spring (30) are respectively fixedly arranged on the movable plate (28) and the L-shaped plate (26). The movable plate (28) extends upward, and a vertical rod (31) located on the left side of the tooling assembly (7) is fixedly arranged at the extended end. A floating plate (32) and a first vertical spring (33) are sleeved on the vertical rod (31). The floating plate (32) extends to the right, and a pressure sensor (16) is fixedly arranged on the bottom surface of the extended end. The upper and lower ends of the first vertical spring (33) are respectively fixedly arranged on the floating plate (32) and the movable plate (28). The top of the vertical rod (31) is hinged with a bent plate (35) through a shaft (34). The left half of the bent plate (35) is located on the left side of the vertical rod (31), and the bottom edge of the right half of the bent plate (35) supports on the top surface of the floating plate (32); A driving and impact assembly for driving the pressure sensor (16) to move horizontally and vertically and for impacting the support column (4) is further arranged on the workbench (5) between the two pressure sensor mounting assemblies (25). The driving and impact assembly includes a lifting cylinder (36) fixedly arranged on the bottom surface of the workbench (5), and a lifting plate (37) fixedly arranged on the piston rod of the lifting cylinder (36); The left and right ends of the lifting plate (37) respectively penetrate through the L-shaped plates (26) of the two pressure sensor mounting assemblies (25). Vertical plates (38) are fixedly arranged at the left and right ends of the lifting plate (37). Inclined plates (39) are fixedly arranged at the tops of the two vertical plates (38). The two inclined plates (39) are respectively in contact with the two first wheels (29). Cylindrical rods (40) are fixedly arranged at the tops of the two inclined plates (39). A second wheel (41) is rotatably installed at the top of the cylindrical rod (40). The second wheel (41) is located directly below the left half of the bent plate (35). A gantry is fixedly arranged on the top surface of the lifting plate (37) between the two vertical plates (38), and impact mechanisms (42) are arranged at the left and right ends of the gantry.

2. The detection device for detecting the anti-fracture strength of each pillar of a multi-pillar powder metallurgy part according to claim 1, wherein: Legs supported on the ground are fixedly arranged at the four corners of the bottom surface of the workbench (5).

3. The detection device for detecting the anti-fracture strength of each pillar of a powder metallurgy part with multiple pillars according to claim 2, characterized in that: The tooling assembly (7) includes a bracket (20) fixed to the bottom surface of the crossbeam of the arch frame (6). A self-locking motor (43) is fixed to the bracket (20). The output shaft of the self-locking motor (43) faces forward, and a baffle (22) is fixed to the output shaft. A limit post (23) is fixed to the front end face of the baffle (22), and a flat key (24) arranged along its axial direction is fixed to the column surface of the limit post (23).

4. A detection device for detecting the anti-fracture strength of each pillar of a multi-pillar powder metallurgy part, according to claim 3, characterized in that: A vertical strip-shaped groove is formed in the L-shaped plate (26) of the pressure sensor mounting assembly (25), and the jacking plate (37) penetrates through the strip-shaped groove.

5. The detection device for detecting the anti-fracture strength of each pillar of a multi-pillar powder metallurgy part according to claim 4, characterized in that: The length of the right half part of the bent plate (35) of the pressure sensor mounting assembly (25) is less than that of the left half part, and the weight of the right half part of the bent plate (35) is greater than that of the left half part.

6. The detection device for detecting the anti-fracture strength of each pillar of a powder metallurgy part with multiple pillars according to claim 5, wherein: The two pressure sensor mounting assemblies (25) are symmetrically arranged about the gantry left and right.

7. The detecting device for detecting the anti-fracture strength of each support pillar of a multi-support-pillar powder metallurgy part according to claim 6, wherein: The impact mechanism (42) on the left side includes a reciprocating cylinder (10) fixed to the gantry. The piston rod of the reciprocating cylinder (10) penetrates upward through the top wall of the gantry, and an impact head (11) is fixed to the extending end.

8. The detecting device for detecting the anti-fracture strength of each support pillar of a powder metallurgy part with multiple support pillars according to claim 7, characterized in that: The detection device further includes a controller, and the controller is electrically connected to the reciprocating cylinder (10), the jacking cylinder (36), the self-locking motor (43), and the pressure sensor (16) via signal lines.

9. A method for detecting the anti-fracture strength of each pillar of a multi-pillar powder metallurgy part, using the detection device for detecting the anti-fracture strength of each pillar of a multi-pillar powder metallurgy part according to claim 8, characterized in that: It includes the following steps: S1. The worker takes out a part to be detected. The worker sleevs the central hole (2) and the keyway (3) of the part on the limit post (23) and the flat key (24) of the tooling assembly (7) respectively, and abuts the disc (1) of the part against the baffle (22), thereby realizing the installation of the part. At this time, the pressure sensors (16) of the two pressure sensor mounting assemblies (25) are respectively outside the columns (4) on the left and right sides of the part. S2. Make the columns (4) on the left and right sides of the part in the detection station. The specific operation steps are as follows: S21. Control the piston rod of the jacking cylinder (36) of the driving and impact assembly to extend upward. The piston rod drives the jacking plate (37) to move upward. The jacking plate (37) drives the gantry and the two vertical plates (38) to move upward synchronously. The gantry drives the two impact mechanisms (42) thereon to move upward synchronously. The reciprocating cylinders (10) and the impact heads (11) of the impact mechanisms (42) move upward synchronously. The two impact heads (11) move respectively towards the two columns (4) on the left and right sides of the part. Meanwhile, the two vertical plates (38) drive the inclined plates (39) connected thereto to move upward synchronously. The inclined plates (39) drive the cylindrical rods (40) to move upward. The cylindrical rods (40) drive the second wheels (41) to move upward. The second wheels (41) move toward the left half of the bent plate (35). Meanwhile, the inclined plates (39) also push the first wheels (29) to move gradually inward in the horizontal direction. The first wheels (29) drive the movable plate (28) to move gradually inward in the horizontal direction. The movable plate (28) compresses the horizontal spring (30). Moreover, the movable plate (28) drives the vertical rod (31), the floating plate (32), the pressure sensor (16), the vertical spring (33), and the bent plate (35) to all move gradually inward in the horizontal direction. At this time, the two pressure sensors (16) move respectively toward the columns (4) on the left and right sides of the part in the horizontal direction. S22. After the piston rod of the lifting cylinder (36) extends upward by a certain distance, the two first wheels (29) just come into contact with the inner end faces of the two vertical plates (38) respectively, and the two second wheels (41) come into contact with the bottom surfaces of the left halves of the two bent plates (35) respectively. S23. As the piston rod of the lifting cylinder (36) continues to extend upward, the lifting plate (37) drives the gantry and the two vertical plates (38) to continue moving upward. The gantry drives the two impact mechanisms (42) thereon to continue moving upward. The reciprocating cylinders (10) and the impact heads (11) of the impact mechanisms (42) continue moving upward. Meanwhile, the two vertical plates (38) continue to move upward relative to the stationary first wheels (29). The vertical plates (38) drive the inclined plates (39), the cylindrical rods (40), and the second wheels (41) to all move upward synchronously. The second wheels (41) push the left half of the bent plate (35) upward. When the bent plate (35) is stressed, the bent plate (35) rotates inward around the pin shaft (34). The right half of the bent plate (35) gradually presses down the floating plate (32). The floating plate (32) gradually compresses the vertical spring (33). Meanwhile, the floating plate (32) also drives the pressure sensor (16) to move gradually toward the top surface of the column (4) in the vertical direction. After the piston rod of the lifting cylinder (36) fully extends, the columns (4) on the left and right sides of the part are both in the detection station. At this time, the columns (4) on the left and right sides of the part are respectively within the impact stroke ranges of the impact heads (11) of the two impact mechanisms (42). Meanwhile, the two pressure sensors (16) are respectively pressed onto the top surfaces of the columns (4) on the left and right sides of the part. The two pressure sensors (16) transmit the pressure signals to the controller. S3. Control the piston rod of the reciprocating cylinder (10) of the two impact mechanisms (42) to perform reciprocating telescopic motion. When the piston rod of the reciprocating cylinder (10) extends upward, the piston rod drives the impact head (11) to impact the support column (4); when the piston rod of the reciprocating cylinder (10) retracts downward, the piston rod drives the impact head (11) to move downward. As the piston rods of the two reciprocating cylinders (10) perform reciprocating telescopic motion, the reciprocating impact on the support columns (4) on the left and right sides of the part by the two impact heads (11) is realized. If before the impact test ends, one of the pressure sensors (16) does not send a pressure signal to the controller, it indicates that the support column (4) corresponding to this pressure sensor (16) has been broken off from the disc (1) by the impact head (11). Furthermore, it indicates that the anti-fracture strength of the detected support column (4) does not meet the requirements, and then it is determined that this part is a defective product, and the worker removes the defective product from the limit post (23). If after the impact test ends, both pressure sensors (16) are still sending pressure signals to the controller, it indicates that the support columns (4) on both the left and right sides of the part have not been broken off from the disc (1) by the impact heads (11). Furthermore, it indicates that the anti-fracture strengths of the two support columns (4) on the left and right sides of the part meet the requirements. At this time, the next operation steps for the worker are as follows: S31. Control the reciprocating cylinder (10) to close, and then control the piston rod of the lifting cylinder (36) to retract downward. The piston rod drives the lifting plate (37) to move downward, and the lifting plate (37) drives the gantry and the two vertical plates (38) to move downward synchronously. The gantry drives the two impact mechanisms (42) to move downward synchronously, and the reciprocating cylinder (10) and the impact head (11) of the impact mechanism (42) move downward synchronously. At the same time, the vertical plate (38) drives the inclined plate (39), the cylindrical rod (40) and the second wheel (41) to move downward synchronously. During the process when the second wheel (41) separates from the left half of the bent plate (35), the bent plate (35) rotates outward around the pin shaft (34). Under the elastic restoring force of the vertical spring (33) in the compressed state, the floating plate (32) drives the pressure sensor (16) to gradually move upward in the vertical direction, so that the pressure sensor (16) is separated from the support column (4) in the vertical direction. When the inclined plate (39) moves to be horizontally opposite to the first wheel (29), the first wheel (29) presses against the inclined plate (39). Under the elastic restoring force of the horizontal spring (30) in the compressed state, the first wheel (29) drives the movable plate (28) to gradually move outward. The movable plate (28) also drives the vertical rod (31), the floating plate (32), the pressure sensor (16), the vertical spring (33) and the bent plate (35) to gradually move outward in the horizontal direction, so that the pressure sensor (16) is gradually separated from the support column (4) in the horizontal direction. When the piston rod of the lifting cylinder (36) is fully retracted, the two impact heads (11) move to the initial position. At the same time, the two pressure sensors (16) respectively move to the outside of the support columns (4) on the left and right sides of the part. S32. Start the self-locking motor (43) of the control tooling component. The self-locking motor (43) drives the baffle (22) and the limit post (23) to rotate synchronously. The limit post (23) drives the part to rotate, and the part drives the pillar (4) thereon to rotate. When the part rotates 90°, the controller controls the self-locking motor (43) to turn off, and the other two pillars (4) of the part respectively move to directly above the impact head (11); The worker repeats the operations of steps S2~S31 once, so as to perform the anti-fracture strength test on the other two pillars (4) of the part, and thus finally complete the anti-fracture strength test of the four pillars (4) of one part; S4. The worker repeats the operations of steps S1~S3 many times, so as to complete the anti-fracture strength test on the four pillars (4) of each part in the workshop.

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