Curvature detection device for femoral stem

Abstract

The utility model relates to the technical field of curvature detection, in particular to a curvature detection device for a femoral stem, which comprises a mounting plate, a mounting block is arranged on one side of the top end of the mounting plate, a mounting groove is arranged in the top end of the mounting block, a threaded rod is arranged in the mounting groove, a movable block is arranged on the threaded rod, and the movable block is arranged in the mounting groove. A supporting frame is arranged at the top end of the moving block, a groove is formed in one side of the supporting frame, a femoral stem needing to be detected is placed at the top of the mounting plate, at the moment, the two-way screw drives the movable frame, the movable frame drives the clamping plates to clamp and fix the two ends of the femoral stem, detection of the femoral stem is facilitated, after clamping is completed, the electric telescopic rod is started, and then the femoral stem is fixed. The electric telescopic rod drives the connecting rod, the connecting rod drives the dial indicator to descend, the bottom end of the measuring head measures the femoral stem, the threaded rod can drive the supporting frame to slide, and therefore the position of the dial indicator is raised, different positions of the femoral stem can be measured conveniently, and the using effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of curvature detection, in particular to a curvature detection device for a femoral stem. Background Art

[0002] Due to temperature changes and material plastic deformation during the forging process, femoral stem products will generally experience varying degrees of deformation after forging. The thinner and lighter the structure, the greater the curvature in the thickness direction, which affects the product qualification rate. In order to remove unqualified products, it is necessary to screen products with unqualified curvature.

[0003] The current methods mostly use visual inspection or directly place the test on a horizontal platform. There are deficiencies in the unqualified detection of small-arc bent workpieces, and it is not easy to fix the femoral stem, which can easily affect the accuracy of the measurement. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a curvature detection device for a femoral stem.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a curvature detection device for a femoral stem, comprising a mounting plate, a mounting block is arranged on one side of the top of the mounting plate, a mounting groove is arranged in the top of the mounting block, a threaded rod is arranged in the mounting groove, a moving block is arranged on the threaded rod, a support frame is arranged on the top of the moving block, a groove is arranged in one side of the support frame, an electric telescopic rod is arranged on the top of the support frame, one end of the electric telescopic rod is located in the groove and is provided with a connecting rod, a micrometer is arranged at one end of the connecting rod, a measuring head is arranged at the bottom of the micrometer, and a first motor is arranged at one end of the mounting block. , the output end of the first motor is connected to the threaded rod, movable frames are provided on both sides of the top of the mounting plate, a clamping plate is provided on one side of the movable frame, fixed blocks are provided on both sides of the bottom end of the mounting plate, a bidirectional screw is provided between the fixed blocks, a movable plate is provided at both ends of the bidirectional screw, the movable plate and the bidirectional screw are threadedly connected, connecting blocks are provided on both sides of the top of the movable plate, the top of the connecting block is connected to the movable frame, a driven gear is provided in the middle of the bidirectional screw, a second motor is provided on one side of the bottom end of the mounting plate, a driving gear is provided at the output end of the second motor, and the driving gear and the driven gear are meshedly connected.

[0008] In order to improve the stability of the movable plate when sliding, the utility model is improved in that fixed sliding rods are arranged on both sides of the threaded rod, sliding holes are arranged on both sides of the movable plate, the sliding holes are sleeved on the fixed sliding rods, and both ends of the fixed sliding rods are connected to fixed blocks.

[0009] In order to improve the protective effect of the splint, the utility model is improved in that a spring is arranged at one side of the movable frame, a connecting rod is arranged on the spring, and one end of the connecting rod is connected to the splint.

[0010] In order to improve the use effect of the clamping plate, the utility model is improved in that a plurality of springs and connecting rods are provided and evenly arranged between the fixing frame and the clamping plate.

[0011] In order to improve the anti-skid effect of the clamping plate, the utility model is improved in that an anti-skid pad is arranged on the inner wall of the clamping plate, and the anti-skid pad is made of rubber material.

[0012] In order to improve the stability of the support frame when sliding, the utility model is improved in that sliding blocks are arranged on both sides of the bottom end of the support frame, sliding grooves are arranged on both sides of the top end of the mounting block, and one end of the sliding block is slidably arranged inside the sliding groove.

[0013] In order to improve the stability of the mounting plate, the utility model is improved in that supporting feet are arranged on both sides of the bottom end of the mounting plate, and the supporting feet are fixedly connected to the mounting plate.

[0014] In order to improve the durability of the equipment, the utility model is improved in that an anti-corrosion layer is provided on the mounting plate, the mounting block, the support frame and the connecting rod.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a femoral stem curvature detection device, which has the following beneficial effects:

[0017] The femoral stem curvature detection device places the femoral stem to be detected on the top of the mounting plate, and at this time, the movable frame is driven by the bidirectional screw, so that the movable frame drives the splint to clamp and fix the two ends of the femoral stem, so as to facilitate its detection. After the clamping is completed, the electric telescopic rod is turned on, and the electric telescopic rod drives the connecting rod, and the connecting rod drives the micrometer to descend, so that the bottom end of the measuring head can measure the femoral stem, and the threaded rod can drive the support frame to slide, thereby raising the position of the micrometer, so as to facilitate the measurement of different positions of the femoral stem, and improve the use effect of the equipment itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A side view schematic diagram of the structure;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the structure viewed from above;

[0021] Figure 4 For this utility model Figure 3 A schematic diagram of a top view structure;

[0022] In the figure: 1. mounting plate; 2. movable frame; 3. clamping plate; 4. mounting block; 5. threaded rod; 6. first motor; 7. moving block; 8. support frame; 9. electric telescopic rod; 10. connecting rod; 11. micrometer; 12. measuring head; 13. spring; 14. bidirectional screw; 15. moving plate; 16. driven gear; 17. second motor; 18. driving gear; 19. fixed slide rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 A curvature detection device for a femoral stem comprises a mounting plate 1, a mounting block 4 is arranged on one side of the top of the mounting plate 1, a mounting groove is arranged in the top of the mounting block 4, a threaded rod 5 is arranged in the mounting groove, a moving block 7 is arranged on the threaded rod 5, a support frame 8 is arranged on the top of the moving block 7, a groove is arranged in one side of the support frame 8, an electric telescopic rod 9 is arranged on the top of the support frame 8, one end of the electric telescopic rod 9 is located inside the groove and is provided with a connecting rod 10, a micrometer 11 is arranged at one end of the connecting rod 10, a measuring head 12 is arranged at the bottom of the micrometer 11, a first motor 6 is arranged at one end of the mounting block 4, and the output end of the first motor 6 is connected to the threaded rod 5, and two sides of the top of the mounting plate 1 are arranged There is a movable frame 2, a clamping plate 3 is provided on one side of the movable frame 2, fixed blocks are provided on both sides of the bottom end of the mounting plate 1, a bidirectional screw 14 is provided between the fixed blocks, a movable plate 15 is provided at both ends of the bidirectional screw 14, the movable plate 15 and the bidirectional screw 14 are threadedly connected, connecting blocks are provided on both sides of the top of the movable plate 15, the top of the connecting block is connected to the movable frame 2, a driven gear 16 is provided in the middle of the bidirectional screw 14, a second motor 17 is provided on one side of the bottom end of the mounting plate 1, a driving gear 18 is provided at the output end of the second motor 17, the driving gear 18 is meshed with the driven gear 16, and supporting feet are provided on both sides of the bottom end of the mounting plate 1, and the supporting feet are fixedly connected to the mounting plate 1.

[0025] In actual use of the above structure, the femoral stem to be tested is first placed on the mounting plate 1, and the second motor 17 is turned on at this time. The second motor 17 drives the driving gear 18, and the driving gear 18 drives the driven gear 16 through meshing. The driven gear 16 drives the bidirectional screw 14 to rotate, so that the bidirectional screw 14 drives the moving plate 15, and the moving plate 15 drives the movable frame 2 through the connecting block, so that the movable frame 2 drives the splint 3, and the femoral stem is clamped and fixed by the splint 3, which is convenient for subsequent testing. During the test, first turn on the Start the electric telescopic rod 9, which drives the micrometer 11 to descend through the connecting rod 10, so that the measuring head 12 can detect the femoral stem. During the detection process, the position of the micrometer 11 can also be adjusted. When adjusting, start the first motor 6, which drives the threaded rod 5 to rotate, and the threaded rod 5 drives the moving block 7, and the moving block 7 drives the support frame 8, so that the support frame 8 slides left and right on the mounting block 4, thereby realizing the adjustment of the position of the micrometer 11, so as to facilitate the detection of different positions of the femoral stem, which is more practical.

[0026] In this embodiment, fixed slide rods 19 are provided on both sides of the threaded rod 5, and sliding holes are provided on both sides of the movable plate 15. The sliding holes are sleeved on the fixed slide rods 19, and both ends of the fixed slide rods 19 are connected to fixed blocks, which can improve the stability of the movable plate 15 when sliding.

[0027] In this embodiment, a spring 13 is provided on one side of the movable frame 2, a connecting rod is provided on the spring 13, and one end of the connecting rod is connected to the splint 3, so that the splint 3 has a certain buffering effect, thereby preventing the femoral stem from being damaged due to excessive clamping force of the splint 3.

[0028] In this embodiment, an anti-skid pad is arranged on the inner wall of the clamping plate 3 , and the anti-skid pad is made of rubber material to improve the anti-skid effect when the clamping plate 3 is clamped.

[0029] In this embodiment, sliding blocks are provided on both sides of the bottom of the support frame 8, and sliding grooves are provided on both sides of the top of the mounting block 4. One end of the sliding block is slidably arranged inside the sliding groove, thereby improving the stability of the support frame 8 when sliding.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A femoral stem curvature detection device, characterized in that: The invention comprises a mounting plate (1), wherein a mounting block (4) is arranged on one side of the top of the mounting plate (1), a mounting groove is arranged in the top of the mounting block (4), a threaded rod (5) is arranged in the mounting groove, a moving block (7) is arranged on the threaded rod (5), a support frame (8) is arranged on the top of the moving block (7), a groove is arranged in one side of the support frame (8), an electric telescopic rod (9) is arranged on the top of the support frame (8), one end of the electric telescopic rod (9) is located in the groove and is provided with a connecting rod (10), a micrometer (11) is arranged at one end of the connecting rod (10), a measuring head (12) is arranged at the bottom end of the micrometer (11), a first motor (6) is arranged at one end of the mounting block (4), an output end of the first motor (6) is connected to the threaded rod (5), and the A movable frame (2) is arranged on both sides of the top of the mounting plate (1), a clamping plate (3) is arranged on one side of the movable frame (2), fixed blocks are arranged on both sides of the bottom end of the mounting plate (1), a bidirectional screw (14) is arranged between the fixed blocks, a movable plate (15) is arranged at both ends of the bidirectional screw (14), the movable plate (15) and the bidirectional screw (14) are threadedly connected, connecting blocks are arranged on both sides of the top end of the movable plate (15), the top end of the connecting block is connected to the movable frame (2), a driven gear (16) is arranged in the middle of the bidirectional screw (14), a second motor (17) is arranged on one side of the bottom end of the mounting plate (1), a driving gear (18) is arranged at the output end of the second motor (17), and the driving gear (18) and the driven gear (16) are meshingly connected.

2. A femoral stem curvature detection device according to claim 1, characterized in that: Fixed slide bars (19) are arranged on both sides of the threaded rod (5), and slide holes are arranged on both sides of the movable plate (15). The slide holes are sleeved on the fixed slide bars (19), and both ends of the fixed slide bars (19) are connected to fixed blocks.

3. A femoral stem curvature detection device according to claim 2, characterized in that: A spring (13) is arranged on one side of the movable frame (2), a connecting rod is arranged on the spring (13), and one end of the connecting rod is connected to the clamping plate (3).

4. A femoral stem curvature detection device according to claim 3, characterized in that: The springs (13) and connecting rods are provided in plurality and are evenly arranged between the fixing frame and the clamping plate (3).

5. A femoral stem curvature detection device according to claim 4, characterized in that: An anti-skid pad is arranged on the inner wall of the clamping plate (3), and the anti-skid pad is made of rubber material.

6. A femoral stem curvature detection device according to claim 5, characterized in that: Sliding blocks are arranged on both sides of the bottom end of the support frame (8), and sliding grooves are arranged on both sides of the top end of the installation block (4), and one end of the sliding block is slidably arranged inside the sliding groove.

7. A femoral stem curvature detection device according to claim 6, characterized in that: Support feet are arranged on both sides of the bottom end of the mounting plate (1), and the support feet are fixedly connected to the mounting plate (1).

8. A femoral stem curvature detection device according to claim 7, characterized in that: The mounting plate (1), the mounting block (4), the support frame (8) and the connecting rod (10) are all provided with an anti-corrosion layer.

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