A testing platform for titanium alloy castings

Abstract

This utility model relates to the field of titanium alloy casting inspection technology, and discloses an inspection platform for titanium alloy castings, including an inspection platform. The top of the inspection platform has a movable groove, and a movable plate driven by a servo motor is arranged in the movable groove. The top of the movable plate has two mutually spaced adjustment grooves. Each adjustment groove is slidably connected to an adjustment plate driven by a servo motor and an adjustment plate driven by a servo motor. The inner cavity of the adjustment plate is connected to a rotating column through a bearing. A rotating cylinder is fixed to one side of the rotating column by a disc. A rotating cylinder driven by a servo motor is arranged to one side of the adjustment plate. This application allows for convenient and quick inspection of one tubular titanium alloy casting when it has been inspected and sent away, and the other tubular titanium alloy casting can be directly sent to the inspection position for inspection. This method can avoid the waiting period during installation and disassembly, and can effectively improve the inspection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of titanium alloy casting inspection technology, specifically to an inspection platform for titanium alloy castings. Background Technology

[0002] Cast titanium alloys are industrial alloys made from metallic titanium as the base material, formed through investment casting or graphite mold casting processes. They are characterized by high specific strength, high specific stiffness, and excellent heat and corrosion resistance, and are widely used in the manufacture of aerospace vehicles, ship propellers, and specialized biomedical devices.

[0003] After tubular titanium alloy castings are produced, their surface often needs to be inspected to ensure the quality of subsequent shipments or use.

[0004] A Chinese patent, CN222733575U, describes a testing platform for casting processing. It includes: "A base with a fixed plate fixedly connected to one side of its top. Rotary shafts are rotatably connected to both sides of the fixed plate's interior. A turntable is fixedly connected to one end of each shaft. A fixed column is fixedly connected to one side of the turntable. A sliding sleeve is slidably connected to the outside of the fixed column. Arc-shaped plates are equidistantly arranged on the outside of the sliding sleeve. Support plates are fixedly connected to both sides of the top of the base. This invention provides a testing platform for casting processing, solving the problem that in the prior art, after processing tubular castings, roughness is typically inspected manually by holding the casting and observing its outer wall. However, manual inspection is inaccurate and inconvenient for simultaneously inspecting multiple workpieces. Furthermore, manually holding the casting is labor-intensive and detrimental to improving inspection efficiency."

[0005] Through a search of the aforementioned patent technologies, we found that this testing platform still has certain shortcomings in its use:

[0006] When inspecting tubular castings, they are clamped and fixed using structures such as fixing plates and columns. Before inspecting the next batch of castings, it's necessary to wait for the uninspected castings to be removed before reinstalling and inspecting them. This creates a waiting period, which reduces the efficiency of tubular casting inspection. Therefore, to address this issue, we designed a more efficient inspection platform for titanium alloy castings. Utility Model Content

[0007] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a testing platform for titanium alloy castings, comprising a testing platform, wherein a movable groove is provided on the top of the testing platform, and a movable plate driven by a servo motor is provided in the movable groove; two mutually spaced adjustment grooves are provided on the top of the movable plate, and an adjustment plate driven by a servo motor is slidably connected to an adjustment plate driven by a servo motor in each adjustment groove; a rotating column is connected to the inner cavity of the adjustment plate by a bearing, and a rotating cylinder is fixed to one side of the rotating column by a disc; a rotating cylinder driven by a servo motor is provided to one side of the adjustment plate.

[0009] As a further embodiment of this utility model: the servo motor is installed on one side of the detection platform, the power output shaft of the servo motor is movably inserted into the movable slot and is connected to a threaded rod, and the other end of the threaded rod is threaded through the movable plate and rotatably connected to the inner wall of one side of the movable slot.

[0010] As a further embodiment of this utility model: a fixed frame is fixed at the top of the detection platform and at one side of each adjustment slot. The servo motor three is installed on the top of the fixed frame. The power output shaft of the servo motor three movably passes through the inner cavity of the fixed frame and is connected to a driving bevel gear. A driven bevel gear meshes with the driving bevel gear. A bidirectional threaded rod is fixed on one side of the driven bevel gear. The other end of the bidirectional threaded rod movably passes through the adjustment slot and sequentially threads through adjustment plate one and adjustment plate two and is rotatably connected to the other side of the inner wall of the adjustment slot.

[0011] As a further embodiment of this utility model: a compression rod is movably inserted through the inner wall of the rotating cylinder at equal intervals in a ring shape. A fixing plate is fixed on the rod body of the compression rod, and a return spring is fixed on the fixing plate and sleeved on the compression rod. The other end of the return spring is fixed on the inner bottom wall of the rotating cylinder. One end of the compression rod located in the inner cavity of the rotating cylinder is designed with a round head structure, and an arc-shaped rubber block is fixed to one end of the compression rod that extends out of the rotating cylinder.

[0012] As a further embodiment of this utility model: the servo motor four is installed on one side of the adjustment plate two, the power output shaft of the servo motor four is connected to the adjustment plate two through a bearing, a disc two is fixed on one side of the rotating cylinder two and is fixedly connected to the power output shaft of the servo motor four, a fixing block is fixed in the inner cavity of the rotating cylinder two through a support plate, a return spring two is fixed at the top, bottom, front and rear of the fixing block, a pressing rod two is fixed at the end of the return spring two away from the fixing block, the end of the pressing rod two away from the return spring two movably passes through the rotating cylinder two and is designed as an arc surface, and a rubber block is also fixed on the arc surface of the pressing rod two.

[0013] As a further embodiment of this utility model: a screwing rod is threadedly connected to the middle of the inner cavity of the rotating column. One end of the screwing rod is fixed with a handle, and the other end passes through the disc and is placed inside the rotating cylinder and fixed with a conical abutment block.

[0014] As a further embodiment of this utility model: the first rotating cylinder and the second rotating cylinder have the same height.

[0015] As a further embodiment of this utility model: a support frame is fixed at the top center of the detection platform. A servo motor 2 is installed on the top of one side of the support frame. The power output shaft of the servo motor 2 passes through a guide groove opened in the inner top wall of the support frame and is connected to a reciprocating lead screw. The end of the reciprocating lead screw away from the servo motor 2 is rotatably connected to the other side of the inner wall of the guide groove. A movable block sleeved with the reciprocating lead screw is also provided in the guide groove. A surface roughness meter is installed at the bottom of the movable block.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. In this application, through the designed testing platform, movable slot, movable plate, and servo motor, the tubular titanium alloy castings to be tested can be effectively installed on the movable plate. When testing tubular titanium alloy castings on one set of adjustment plates 1 and 2, the tubular titanium alloy castings can be installed and removed on another set of adjustment plates 1 and 2. This allows one tubular titanium alloy casting to be tested and sent away, while the other tubular titanium alloy casting is directly sent to the testing position for rapid testing. This method avoids the waiting period during installation and removal, and can effectively improve testing efficiency.

[0018] Second, in this application, the designed adjustment plate one, adjustment plate two, rotating cylinder one and rotating cylinder two structures can provide stable support for both ends of the tubular titanium alloy casting, ensuring that the tubular titanium alloy casting is more stable when rotating, and avoiding instability of the tubular titanium alloy casting during testing caused by only one end being supported.

[0019] Third, in this application, the designed servo motor three, bidirectional threaded rod, adjustment plate one and adjustment plate two and other structures can support tubular titanium alloy castings of different lengths, thereby facilitating the use of the platform to inspect tubular titanium alloy castings of different lengths, and enhancing its applicability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the movable plate of this utility model;

[0022] Figure 3 This is a side sectional view of the movable plate of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the fixing block of this utility model;

[0024] Figure 5 This is a front cross-sectional view of the testing platform of this utility model;

[0025] Figure 6 This is a front cross-sectional view of the rotating cylinder of this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the movable block of this utility model.

[0027] The reference numerals and names in the figure are as follows:

[0028] 1. Testing platform; 2. Movable groove; 3. Movable plate; 4. Servo motor one; 401. Threaded rod; 5. Support frame; 6. Surface roughness tester; 7. Servo motor two; 701. Reciprocating lead screw; 702. Movable block; 8. Adjustment groove; 9. Fixed frame; 10. Servo motor three; 1001. Driving bevel gear; 11. Bidirectional threaded rod; 1101. Driven bevel gear; 12. Adjustment plate one; 1201. Rotating column; 13. Rotating cylinder one; 14. Adjustment plate two; 15. Servo motor four; 16. Rotating cylinder two; 17. Tightening rod; 18. Conical contact block; 19. Pressing rod one; 20. Fixed plate; 21. Return spring one; 22. Fixed block; 23. Return spring two; 24. Pressing rod two. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7A testing platform for titanium alloy castings includes a testing platform 1. The top of the testing platform 1 has a movable groove 2, in which a movable plate 3 driven by a servo motor 4 is installed. The top of the movable plate 3 has two mutually spaced adjustment grooves 8. Each adjustment groove 8 is slidably connected to an adjustment plate 12 and an adjustment plate 14 driven by a servo motor 3. The inner cavity of the adjustment plate 12 is connected to a rotating column 1201 via a bearing. A rotating cylinder 13 is fixed to one side of the rotating column 1201 via a disc. A rotating cylinder 16 driven by a servo motor 4 is installed to one side of the adjustment plate 14. The rotating cylinders 13 and 16 are at the same height, ensuring stable support for the tubular titanium alloy casting.

[0031] Please see Figure 1 , Figure 2 and Figure 5 In this embodiment, servo motor 4 is installed on one side of the detection platform 1. The power output shaft of servo motor 4 extends movably into the movable groove 2 and is connected to a threaded rod 401. The other end of the threaded rod 401 is threaded through the movable plate 3 and rotatably connected to the inner wall of one side of the movable groove 2.

[0032] Specifically, by starting the servo motor 4, the threaded rod 401 can be driven to rotate, thereby enabling the movable plate 3 to move in the movable slot 2. By rotating the power output shaft of the servo motor 4 in both directions, the movable plate 3 can reciprocate in the movable slot 2.

[0033] Please see Figure 2 , Figure 3 and Figure 5 In this embodiment, a fixed frame 9 is fixed at the top of the detection platform 1 and at one side of each adjustment slot 8. A servo motor 3 10 is installed on the top of the fixed frame 9. The power output shaft of the servo motor 3 10 moves through the inner cavity of the fixed frame 9 and is connected to the driving bevel gear 1001. A driven bevel gear 1101 meshes with the driving bevel gear 1001. A bidirectional threaded rod 11 is fixed on one side of the driven bevel gear 1101. The other end of the bidirectional threaded rod 11 moves through the adjustment slot 8 and sequentially threads through the adjustment plate 1 12 and the adjustment plate 2 14 and is rotatably connected to the other side of the inner wall of the adjustment slot 8.

[0034] Specifically, by starting the servo motor 310, its power output shaft can drive the active bevel gear 1001 to rotate, thereby driving the driven bevel gear 1101 that meshes with it to rotate. When the driven bevel gear 1101 rotates, it can drive the bidirectional threaded rod 11 connected to it to rotate. Since the bidirectional threaded rod 11 has two opposite threads, and the adjusting plate 12 and the adjusting plate 2 14 are respectively fitted on the two opposite threads, when the bidirectional threaded rod 11 rotates, it can drive the adjusting plate 12 and the adjusting plate 2 14 to move closer or further away from each other, thereby realizing the installation of tubular titanium alloy castings of different lengths.

[0035] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6 In this embodiment, a pressing rod 19 is movably inserted through the inner wall of the rotating cylinder 13 in an annular pattern. A fixing plate 20 is fixed to the rod body of the pressing rod 19. A return spring 21 is fixed on the fixing plate 20 and sleeved on the pressing rod 19. The other end of the return spring 21 is fixed to the inner bottom wall of the rotating cylinder 13. One end of the pressing rod 19 located in the inner cavity of the rotating cylinder 13 is designed with a round head structure. An arc-shaped rubber block is fixed to one end of the pressing rod 19 that passes through the rotating cylinder 13. A turning rod 17 is threadedly connected to the middle of the inner cavity of the rotating column 1201. One end of the turning rod 17 is fixed with a handle, and the other end passes through a disc and is placed inside the rotating cylinder 13 and fixed with a conical abutment block 18.

[0036] Specifically, by rotating the screw rod 17, the conical contact block 18 can be moved towards one side of the extrusion rod 19. This allows the conical contact block 18 to simultaneously abut the round ends of multiple extrusion rods 19, causing them to move. The end of the extrusion rod 19 with the rubber block extends from the surface of the rotating cylinder 13 and presses against the inner wall of the tubular titanium alloy casting, thus stabilizing the tubular titanium alloy casting. When the screw rod 17 is rotated in reverse, the return spring 21 can reset the extrusion rod 19 and return it to the rotating cylinder 13, releasing the clamping force on the tubular titanium alloy casting and facilitating its removal.

[0037] Please see Figure 2 , Figure 3 and Figure 4In this embodiment, servo motor 4 15 is installed on one side of adjustment plate 2 14. The power output shaft of servo motor 4 15 is connected to adjustment plate 2 14 through bearing. A disc 2 is fixed on one side of rotating cylinder 2 16 and is fixedly connected to the power output shaft of servo motor 4 15. A fixing block 22 is fixed in the inner cavity of rotating cylinder 2 16 through a support plate. A reset spring 23 is fixed at the top, bottom, front and rear of the fixing block 22. A pressing rod 24 is fixed at the end of the reset spring 23 away from the fixing block 22. The end of the pressing rod 24 away from the reset spring 23 moves through rotating cylinder 2 16 and is designed as an arc surface. A rubber block is also fixed on the arc surface of the pressing rod 24.

[0038] Specifically, when one end of the tubular titanium alloy casting is fitted onto the rotating cylinder 16, the inner wall of the tubular titanium alloy casting will press against the extrusion rod 24 extending from the surface of the rotating cylinder 16. The rubber block on the extrusion rod 24 enhances the stability after contact, thereby compressing the return spring 23 at one end of the extrusion rod 24. The rebound force of the return spring 23 provides a certain clamping force to the inner wall of the tubular titanium alloy casting and achieves a stabilizing effect, thus facilitating the initial stabilization of the tubular titanium alloy casting on the rotating cylinder 16. The rotating cylinder 16 has a fixing block 22 inside, which can support and fix the return spring 23, ensuring the stability of the extrusion rod 24. The arrangement of the disc 2 in conjunction with the disc 1 allows the adjusting plate 2 14 and the adjusting plate 1 12 to approach each other, and the disc 2 and the disc 1 clamp the two ends of the tubular titanium alloy casting, ensuring the stability of the tubular titanium alloy casting during testing.

[0039] Please see Figure 1 , Figure 5 and Figure 7 In this embodiment, a support frame 5 is fixed at the top center of the detection platform 1. A servo motor 7 is installed on one side of the top of the support frame 5. The power output shaft of the servo motor 7 passes through the guide groove opened in the inner top wall of the support frame 5 and is connected to a reciprocating screw 701. The end of the reciprocating screw 701 away from the servo motor 7 is rotatably connected to the other side of the inner wall of the guide groove. A movable block 702 is also provided in the guide groove and sleeved with the reciprocating screw 701. A surface roughness meter 6 is installed at the bottom of the movable block 702.

[0040] Specifically, by starting the servo motor 7, its power output shaft can drive the reciprocating screw 701 to rotate, thereby using the reciprocating screw 701 to drive the movable block 702 to reciprocate in the guide groove, thereby driving the surface roughness meter 6 at its bottom to move, facilitating the reciprocating inspection of the tubular titanium alloy casting below and improving the inspection effect.

[0041] When using:

[0042] The operator first inserts one end of the tubular titanium alloy casting to be tested into one of the rotating cylinders, 13, and then inserts the other end into the corresponding rotating cylinder, 16. During insertion, the inner wall of the tubular titanium alloy casting presses against the compression rod 24 on the rotating cylinder 16, causing the compression rod 24 to compress the reset spring 23, thus achieving initial stabilization of that end of the tubular titanium alloy casting using the compression rod 24. Then, the operator rotates the screw rod 17, thereby moving the conical contact block 18 and gradually pressing against the compression rod 19 inside the rotating cylinder 13, causing the other end of the compression rod 19 to protrude from the surface of the rotating cylinder 13 and continuously... The compression return spring 21 eventually causes the extrusion rod 19 to abut against the inner wall of the tubular titanium alloy casting, achieving initial stabilization at that end. Then, the servo motor 10 corresponding to the position where the tubular titanium alloy casting is installed is started. The power output shaft of the servo motor 10 drives the active bevel gear 1001 to rotate, thereby driving the driven bevel gear 1101 that meshes with it. The driven bevel gear 1101 drives the bidirectional threaded rod 11 to rotate, thereby driving the adjusting plate 12 and the adjusting plate 14 to move closer to each other until both ends of the tubular titanium alloy casting abut against the first disk of the rotating cylinder 13 and the second disk of the rotating cylinder 16, respectively, finally achieving stable support for the tubular titanium alloy casting.

[0043] Then, servo motor 4 is started. The power output shaft of servo motor 4 drives the threaded rod 401 to rotate, thereby causing the movable plate 3 to move in the movable slot 2. The tubular titanium alloy casting installed on the top side of the movable plate 3 is transported to the bottom of the surface roughness tester 6. The surface roughness tester 6 is used to inspect the surface of the tubular titanium alloy casting. During the inspection, the start of servo motor 4 15 can drive the rotating cylinder 2 16 to rotate, thereby causing the tubular titanium alloy casting to rotate slowly, which facilitates the surface roughness tester 6 to inspect the surface of the tubular titanium alloy casting.

[0044] While the tubular titanium alloy castings on adjusting plates 12 and 14 in one adjusting slot 8 are being inspected, adjusting plates 12 and 14 in the other adjusting slot 8 are not fitted with any tubular titanium alloy castings and are located far below the surface roughness tester 6. At this time, the operator can install the next tubular titanium alloy casting on adjusting plates 12 and 14 in the other adjusting slot 8. After the previous tubular titanium alloy casting has been inspected, the reverse rotation of the power output shaft of the servo motor 4 can be used to... The movable plate 3 moves in the opposite direction and returns to its initial position. When the movable plate 3 moves in the opposite direction, it can remove the tubular titanium alloy casting that has been inspected in the previous step from under the surface roughness tester 6, and transport the tubular titanium alloy casting that has been installed on the adjusting plate 12 and adjusting plate 14 in another adjusting groove 8 to under the surface roughness tester 6 for direct inspection. During the inspection, the staff can disassemble the tubular titanium alloy casting that has been inspected and reinstall the tubular titanium alloy casting that needs to be inspected for preparation.

[0045] In summary, this application enables the simultaneous disassembly and installation of one tubular titanium alloy casting while another is being inspected. This eliminates waiting time and improves inspection efficiency. Furthermore, the movable plate 3 is adapted to the movable groove 2. When the left side of the movable plate 3 is attached to the left side of the inner wall of the movable groove 2, the titanium alloy casting mounted on the top right side of the movable plate 3 can be positioned below the surface roughness tester 6. When the right side of the movable plate 3 is attached to the right side of the inner wall of the movable groove 2, the titanium alloy casting mounted on the top left side of the movable plate 3 can be positioned below the surface roughness tester 6. This achieves the effect of alternately transporting titanium alloy castings to the surface roughness tester 6 for inspection.

[0046] It should be noted that the servo motor 4, servo motor 7, servo motor 10, and servo motor 15 used in this application are publicly available technologies and are common knowledge in the field. The specific models and specifications can be selected and determined according to the actual use of the platform, etc. Therefore, the above motors will not be described in detail in this application. The surface roughness tester 6 is also a known technology in the field and has been disclosed in patent application, publication number CN222733575U. Its working principle is a known technology, so it will not be described in detail in the specification.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A testing platform for titanium alloy castings, comprising a testing platform (1), characterized in that, The top of the detection platform (1) is provided with a movable slot (2), and a movable plate (3) driven by a servo motor (4) is provided in the movable slot (2); The top of the movable plate (3) has two mutually spaced adjustment slots (8). Each adjustment slot (8) is slidably connected to an adjustment plate one (12) and an adjustment plate two (14) driven by a servo motor three (10). The inner cavity of the adjustment plate one (12) is connected to a rotating column (1201) through a bearing. A rotating cylinder one (13) is fixed on one side of the rotating column (1201) through a disc one. A rotating cylinder two (16) driven by a servo motor four (15) is provided on one side of the adjustment plate two (14).

2. The inspection platform for titanium alloy castings according to claim 1, characterized in that, The servo motor (4) is installed on one side of the detection platform (1). The power output shaft of the servo motor (4) is movably inserted into the movable groove (2) and is connected to a threaded rod (401). The other end of the threaded rod (401) is threaded through the movable plate (3) and rotatably connected to the inner wall of one side of the movable groove (2).

3. The inspection platform for titanium alloy castings of claim 1, wherein, A fixed frame (9) is fixed at the top of the detection platform (1) and at one side of each adjustment slot (8). The servo motor three (10) is installed on the top of the fixed frame (9). The power output shaft of the servo motor three (10) is movably inserted into the inner cavity of the fixed frame (9) and is connected to the driving bevel gear (1001). The driven bevel gear (1101) is meshed with the driven bevel gear (1001). A bidirectional threaded rod (11) is fixed on one side of the driven bevel gear (1101). The other end of the bidirectional threaded rod (11) is movably inserted into the adjustment slot (8) and sequentially threaded through the adjustment plate one (12) and the adjustment plate two (14) and is rotatably connected to the other side of the inner wall of the adjustment slot (8).

4. The inspection platform for titanium alloy castings of claim 1, wherein, The inner wall of the rotating cylinder (13) is circumferentially permeated by a compression rod (19). A fixing plate (20) is fixed on the rod of the compression rod (19). A return spring (21) sleeved on the compression rod (19) is fixed on the fixing plate (20). The other end of the return spring (21) is fixed on the inner bottom wall of the rotating cylinder (13). The end of the compression rod (19) located in the inner cavity of the rotating cylinder (13) is designed with a round head structure. An arc-shaped rubber block is fixed to the end of the compression rod (19) that passes through the rotating cylinder (13).

5. The inspection platform for titanium alloy castings of claim 1, wherein, The servo motor four (15) is installed on one side of the adjustment plate two (14). The power output shaft of the servo motor four (15) is connected to the adjustment plate two (14) through a bearing. A disc two is fixed on one side of the rotating cylinder two (16) and is fixedly connected to the power output shaft of the servo motor four (15). A fixing block (22) is fixed in the inner cavity of the rotating cylinder two (16) through a support plate. A reset spring two (23) is fixed at the top, bottom, front and rear of the fixing block (22). A pressing rod two (24) is fixed at the end of the reset spring two (23) away from the fixing block (22). The end of the pressing rod two (24) away from the reset spring two (23) moves through the rotating cylinder two (16) and is designed as an arc surface. A rubber block is also fixed on the arc surface of the pressing rod two (24).

6. The inspection platform for titanium alloy castings of claim 1, wherein, The rotating column (1201) has a screw rod (17) threadedly connected to the middle of its inner cavity. One end of the screw rod (17) is fixed with a handle, and the other end passes through the disc and is placed inside the rotating cylinder (13) and is fixed with a conical abutment block (18).

7. The inspection platform for titanium alloy castings of claim 1, wherein, The rotating cylinder one (13) and rotating cylinder two (16) have the same height.

8. The inspection platform for titanium alloy castings according to claim 1, characterized in that, A support frame (5) is fixed at the top center of the testing platform (1). A servo motor (7) is installed on the top of one side of the support frame (5). The power output shaft of the servo motor (7) passes through the guide groove opened in the inner top wall of the support frame (5) and is connected to a reciprocating screw (701). The end of the reciprocating screw (701) away from the servo motor (7) is rotatably connected to the other side of the inner wall of the guide groove. A movable block (702) is also provided in the guide groove and sleeved with the reciprocating screw (701). A surface roughness meter (6) is installed at the bottom of the movable block (702).

Images