Tooling fixture for vibration testing

Abstract

The utility model discloses a tool fixture for vibration test, include: workstation, the trapezoidal guide slot is set up in the top of workstation, the two sides symmetry of workstation top end are connected with the clamping block through the trapezoidal guide slot sliding, the first piston groove is transversely preset in the inside of clamping block clamping end, the first piston main part is movably sleeved in the first piston groove, the one end of first piston main part is connected with the resistance pole, the oil cavity is opened in the inside of clamping block longitudinal, the utility model has the following advantages: the workpiece of the utility model needs vibration test and is clamped after through two clamping blocks resistance pole, then, the resistance pole on the clamping block can be in accord with the workpiece and wrap the outside of resistance pole, only need to rotate the turntable on the resistance mechanism manually, can make the screw rod contact and press down the crossbeam, namely, can make the resistance pole on the first piston main part be able to extrude stably on the outside of workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of tooling and fixtures for vibration testing, and specifically to tooling and fixtures used for vibration testing. Background Technology

[0002] A vibration test bench simulates the various environments a product encounters during assembly, transportation, and use in shipbuilding, vehicle-mounted, and testing environments. It is used to assess a product's ability to withstand environmental vibrations and is applicable to research, development, quality control, and manufacturing in various industries such as electronics and electromechanical engineering. Chinese Patent CN212931843U discloses a tooling fixture on a vibration test bench, including a worktable and a clamping mechanism mounted on the worktable. The worktable surface has several fixing holes. The clamping mechanism consists of a cross and hinges. The hinges are fixedly connected to the worktable, and the cross is rotatably connected to the hinges. Each of the four arms of the cross has a limiting hole, and a first fixing screw is installed in each limiting hole. This invention uses a cross to fix the object under test, improving clamping stability. Furthermore, the height of the cross relative to the worktable is adjustable, making it suitable for objects of different heights.

[0003] The existing technology has the following shortcomings: The existing technology uses a cross-shaped clamp and a first fixing screw on the cross-shaped clamp to hold the workpiece to be tested. This method can only hold workpieces with regular shapes and is difficult to hold irregularly shaped workpieces. Therefore, a tooling fixture for vibration testing is provided to solve the above problems. Utility Model Content

[0004] To address the problems mentioned in the background art, the technical solution adopted by this utility model is: a tooling fixture for vibration testing, comprising: a worktable, a trapezoidal guide groove at the top of the worktable, clamping blocks symmetrically connected to both sides of the top of the worktable via the trapezoidal guide groove, a first piston groove pre-set laterally inside the clamping end of the clamping block, a first piston body movably sleeved inside the first piston groove, a supporting rod connected to one end of the first piston body, a communicating oil cavity longitudinally opened inside the clamping block, a locking pin arranged inside the communicating oil cavity on the side facing the first piston body, a return spring connected between the locking pin and the first piston body, a second piston groove pre-set inside the upper end of the clamping block at the communicating oil cavity, a second piston body movably sleeved inside the second piston groove, a piston rod connected to the top of the second piston body, and a supporting mechanism for limiting the movement of the piston rod provided at the top of the clamping block.

[0005] As a preferred technical solution of this utility model, the supporting mechanism includes a concave plate supporting rod, a threaded rod supporting rod, and a turntable supporting rod. The concave plate supporting rod is fixedly connected to the top of the clamping block supporting rod. The threaded rod supporting rod is threaded through and connected to the middle of the top of the concave plate supporting rod. The turntable supporting rod is disposed at the top of the threaded rod supporting rod.

[0006] As a preferred technical solution of this utility model, the second piston body abutment rod and the piston rod abutment rod are each provided with three abutment rods. The top ends of the three piston rod abutment rods are connected to a horizontal plate abutment rod, and the middle of the top end of the horizontal plate abutment rod is directly opposite the threaded rod abutment rod.

[0007] As a preferred technical solution of this utility model, the connecting oil cavity support rod is internally connected to the first piston groove support rod and the second piston groove support rod, and the two clamping block support rods clamp the workpiece support rod through the support rod support rod.

[0008] As a preferred technical solution of this utility model, the first piston body support rod and the support rod support rod are one-to-one, and there are several of them. The support rod support rod is a spherical structure at one end outside the clamping block support rod.

[0009] As a preferred technical solution of this utility model, both sides of the top end of the workbench support rod are fixedly connected to a fixed plate support rod, and a hydraulic telescopic cylinder support rod is fixedly installed on one side of the fixed plate support rod. The output end of the hydraulic telescopic cylinder support rod passes through the fixed plate support rod and connects to the clamping block support rod.

[0010] As a preferred technical solution of this utility model, the bottom of the clamping block abutment rod is provided with a trapezoidal slider abutment rod, the clamping block abutment rod is slidably connected to the inside of the trapezoidal guide groove abutment rod through the trapezoidal slider abutment rod, and the worktable abutment rod is provided on the vibration table abutment rod.

[0011] This utility model has the following advantages: When the workpiece requiring vibration testing is clamped by two clamping blocks and abutting rods, the abutting rods on the clamping blocks can fit snugly and wrap around the outside of the workpiece abutting rod. By simply rotating the turntable abutting rod on the abutting mechanism manually, the threaded rod abutting rod can contact and press down on the horizontal plate abutting rod, so that the abutting rod on the first piston body abutting rod can be stably pressed against the outside of the workpiece abutting rod. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the workpiece clamping structure of a preferred embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the overall structure of the tooling fixture according to a preferred embodiment of the present invention;

[0014] Figure 3 This is a partial cross-sectional view of the clamping block according to a preferred embodiment of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Trapezoidal guide groove; 3. Clamping block; 4. First piston groove; 5. First piston body; 6. Support rod; 7. Return spring; 8. Communicating oil chamber; 9. Locking pin; 10. Second piston groove; 11. Second piston body; 12. Piston rod; 13. Horizontal plate; 14. Concave plate; 15. Threaded rod; 16. Turntable; 17. Trapezoidal slider; 18. Workpiece; 19. Fixing plate; 20. Hydraulic telescopic cylinder; 21. Vibration table. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to the following: Figures 1-3The present invention relates to a tooling fixture for vibration testing, comprising: a workbench 1, a trapezoidal guide groove 2 at the top of the workbench 1, clamping blocks 3 symmetrically connected to both sides of the top of the workbench 1 via the trapezoidal guide groove 2, a first piston groove 4 pre-set laterally inside the clamping end of the clamping block 3, a first piston body 5 movably sleeved inside the first piston groove 4, a supporting rod 6 connected to one end of the first piston body 5, a communicating oil cavity 8 longitudinally opened inside the clamping block 3, a locking post 9 provided on the side of the communicating oil cavity 8 facing the first piston body 5, a return spring 7 connected between the locking post 9 and the first piston body 5, a second piston groove 10 pre-set inside the upper end of the clamping block 3 in the communicating oil cavity 8, a second piston body 11 movably sleeved longitudinally inside the second piston groove 10, a piston rod 12 connected to the top of the second piston body 11, and a supporting mechanism for limiting the movement of the piston rod 12 provided at the top of the clamping block 3.

[0020] Combination Figure 3 As shown, the supporting mechanism includes a concave plate 14, a threaded rod 15, and a turntable 16. The concave plate 14 is fixedly connected to the top of the clamping block 3. The threaded rod 15 is threaded through and connected to the middle of the top of the concave plate 14. The turntable 16 is located at the top of the threaded rod 15. There are three second piston bodies 11 and three piston rods 12. The tops of the three piston rods 12 are connected to a horizontal plate 13, and the middle of the top of the horizontal plate 13 is directly opposite the threaded rod 15. By rotating the turntable 16, the threaded rod 15 moves up and down in the concave plate 14. When the threaded rod 15 moves upward, it moves away from the horizontal plate 13, which facilitates the second piston body 11 to be pushed by the hydraulic oil in the communicating oil chamber 8.

[0021] The oil chamber 8 is connected to the first piston groove 4 and the second piston groove 10. The workpiece 18 is clamped between the two clamping blocks 3 by the abutment rod 6. The first piston body 5 corresponds to the abutment rod 6 one by one, and there are several of them. The abutment rod 6 has a spherical structure at one end outside the clamping block 3, so that the abutment rod 6 will not scratch the workpiece 18 when it contacts the workpiece surface. The top two sides of the worktable 1 are fixedly connected to the fixing plates 19. The hydraulic telescopic cylinder 20 is fixedly installed on one side of the fixing plate 19. The output end of the hydraulic telescopic cylinder 20 passes through the fixing plate 19 and connects to the clamping block 3. The bottom of the clamping block 3 is provided with a trapezoidal slider 17. The clamping block 3 is slidably connected to the inside of the trapezoidal guide groove 2 through the trapezoidal slider 17, so as to ensure that the clamping block 3 moves stably along the trapezoidal guide groove 2. The worktable 1 is set on the vibration table 21.

[0022] Specifically, when using this utility model, the workpiece 18 to be tested for vibration is placed between the two clamping blocks 3, and then the hydraulic telescopic cylinder 20 is operated to push the clamping blocks 3, so that the abutment rod 6 on the clamping blocks 3 can contact the workpiece 18 and fit snugly against the outside of the workpiece 18. Then, the turntable 16 is manually rotated to drive the threaded rod 15 to rotate, and the threaded rod 15 moves downward in the concave plate 14, so that the threaded rod 15 contacts and presses down the horizontal plate 13, so that the horizontal plate 13 presses down the piston rod 12, and the piston rod 12 presses down the second piston body 11, and the second piston body 11 presses down the hydraulic oil in the oil chamber 8, so that the first piston body 5 is kept in a state of being squeezed outward under the oil pressure, so that the abutment rod 6 on the first piston body 5 can be stably squeezed against the outside of the workpiece 18.

[0023] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0024] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. Fixtures and fixtures for vibration testing, including: A workbench (1) is characterized in that a trapezoidal guide groove (2) is provided at the top of the workbench (1), and clamping blocks (3) are symmetrically connected to both sides of the top of the workbench (1) through the trapezoidal guide groove (2). A first piston groove (4) is pre-set horizontally inside the clamping end of the clamping block (3). A first piston body (5) is movably sleeved inside the first piston groove (4). A support rod (6) is connected to one end of the first piston body (5). A communicating oil cavity (8) is longitudinally provided inside the clamping block (3). A locking post (9) is provided on the side of the communicating oil cavity (8) facing the first piston body (5). A reset spring (7) is connected between the locking post (9) and the first piston body (5). A second piston groove (10) is pre-set inside the upper end of the clamping block (3) in the communicating oil cavity (8). A second piston body (11) is movably sleeved vertically inside the second piston groove (10). A piston rod (12) is connected to the top of the second piston body (11). A support mechanism with a limit piston rod (12) is provided at the top of the clamping block (3).

2. The tooling fixture for vibration testing as described in claim 1, characterized in that, The supporting mechanism includes a concave plate (14), a threaded rod (15), and a turntable (16). The concave plate (14) is fixedly connected to the top of the clamping block (3). The threaded rod (15) is threaded through and connected to the middle of the top of the concave plate (14). The turntable (16) is located at the top of the threaded rod (15).

3. The tooling fixture for vibration testing as described in claim 1, characterized in that, The second piston body (11) and piston rod (12) are each provided in three quantities. The top of the three piston rods (12) is connected to a horizontal plate (13), and the top center of the horizontal plate (13) is directly opposite the threaded rod (15).

4. The tooling fixture for vibration testing as described in claim 1, characterized in that, The connecting oil chamber (8) is connected to the interior of the first piston groove (4) and the second piston groove (10), and the workpiece (18) is held between the two clamping blocks (3) by the abutment rod (6).

5. The tooling fixture for vibration testing as described in claim 1, characterized in that, The first piston body (5) corresponds one-to-one with the abutment rod (6), and there are several of them. The abutment rod (6) is a spherical structure located at one end outside the clamping block (3).

6. The tooling fixture for vibration testing as described in claim 1, characterized in that, The workbench (1) has fixed plates (19) on both sides of its top end. A hydraulic telescopic cylinder (20) is fixedly installed on one side of the fixed plate (19). The output end of the hydraulic telescopic cylinder (20) passes through the fixed plate (19) and connects to the clamping block (3).

7. The tooling fixture for vibration testing as described in claim 1, characterized in that, The clamping block (3) is provided with a trapezoidal slider (17) at the bottom. The clamping block (3) is slidably connected to the inside of the trapezoidal guide groove (2) through the trapezoidal slider (17). The worktable (1) is set on the vibration table (21).

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