Lead screw precision inspection tool for CBCT equipment

Abstract

The utility model discloses a lead screw precision detection tool for CBCT equipment, which belongs to the technical field of medical instrument detection and comprises a supporting seat, an integrated display terminal is fixedly mounted on the upper surface of the supporting seat, and a detection assembly is arranged on the upper surface of the supporting seat; according to the utility model, through the arrangement of the detection assembly and the rotation assembly, when the straightness of the screw rod is detected, the displacement sensor moves along the axial direction of the screw rod, so that the data of the screw rod is acquired in real time, and when the screw rod is subjected to screw-thread fit detection, the stepping motor drives the screw rod to rotate through the coupling; the torque sensor measures the rotation resistance torque of the screw rod, the integrated display terminal displays a straightness deviation curve and a torque threshold alarm, the integrated detection design is adopted, the straightness, the thread fit degree and the motion stability can be detected at the same time, repeated clamping is reduced, and a quantification result is directly output through the sensor and the terminal, so that the accuracy of the detection result is improved. The manual interpretation error is reduced, and the data visualization of the inspection tool is realized.

Description

Technical Field

[0001] This utility model belongs to the field of medical device testing technology, and in particular relates to a tooling for testing the precision of lead screws in CBCT equipment. Background Technology

[0002] CBCT (Cone Beam Computed Tomography) equipment is a cone beam computed tomography imaging system. Its principle is that the X-ray generator performs ring-shaped DR (radiometry) around the object being imaged with a low dose of radiation. In the use of CBCT equipment, a lead screw is required for precise transmission. Insufficient lead screw precision in CBCT equipment can lead to imaging quality defects, as well as problems such as low efficiency, poor adaptability, and insufficient data reliability of traditional detection methods. Therefore, the precision of the lead screw is particularly important. Thus, the precision of the lead screw needs to be inspected using inspection fixtures before use.

[0003] Traditional testing methods rely on manual measurement using tools such as dial indicators and calipers, which is inefficient and difficult to guarantee consistency. Existing tooling has poor versatility and cannot be adapted to lead screws of different diameters and pitches, resulting in high testing costs. To address this, a tooling for inspecting lead screw accuracy in CBCT equipment is provided. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of low versatility of current inspection fixtures and limited applicability of lead screws, and to propose a lead screw precision inspection fixture for CBCT equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a screw precision inspection fixture for CBCT equipment, including a support base, a shock-absorbing pad fixedly installed on the lower surface of the support base, an integrated display terminal fixedly installed on the upper surface of the support base, a microcontroller installed inside the integrated display terminal, and a detection component provided on the upper surface of the support base;

[0006] The detection component includes a base and a lead screw. The lower surface of the base is fixedly connected to the upper surface of the support base. A displacement sensor is slidably installed on the side wall of the base. A support block and a mounting plate are fixedly installed on the upper surface of the base. A rotating component and a quick-release component are provided on the upper surface of the base.

[0007] As a further description of the above technical solution:

[0008] The upper surface of the support block is provided with an arc-shaped groove, and bearing fixing plates are fixedly installed on both sides of the support block. A photoelectric switch is fixedly installed on the outer surface of the support block.

[0009] As a further description of the above technical solution:

[0010] The upper surface of the support block is provided with a mounting groove, and a first quick-release buckle is rotatably installed on the inner wall of the mounting groove via a rotating shaft. A guide rail is fixedly installed on the side wall of the mounting plate, and one end of the guide rail passes through the interior of the support block and extends to the outside of the side wall of the support block.

[0011] As a further description of the above technical solution:

[0012] Bearing retaining rings are fixedly installed on both sides of the mounting plate. Torque sensors are fixedly installed on the side walls of the bearing retaining rings. The fixed end of the torque sensor passes through the interior of the mounting plate. One end of the lead screw is fixedly connected to the connecting end of the torque sensor.

[0013] As a further description of the above technical solution:

[0014] The quick-release assembly includes a second slider, the lower surface of which is provided with a groove that is slidably connected to the outer surface of the guide rail. The lower surface of the second slider contacts the upper surface of the base, and a light-blocking baffle is fixedly installed on the side wall of the second slider.

[0015] As a further description of the above technical solution:

[0016] A lead screw mounting base is fixedly installed on the upper surface of the second slider. The upper surface of the lead screw mounting base is provided with a placement groove. One end of the open baffle is fixedly connected to the side wall of the lead screw mounting base. The upper surface of the lead screw mounting base is provided with a connecting groove. The connecting groove is rotatably mounted with a second quick-release buckle via a rotating shaft.

[0017] As a further description of the above technical solution:

[0018] The rotating assembly includes a first slider, the lower surface of which is provided with a groove, the inner wall of which is slidably connected to a guide rail, the lower surface of which contacts the upper surface of the base, and a motor mounting base is fixedly installed on the upper surface of the first slider.

[0019] As a further description of the above technical solution:

[0020] A stepper motor is fixedly mounted on the upper surface of the motor mounting base, and a coupling is fixedly mounted on the output end of the stepper motor. The connecting end of the coupling is fixedly connected to the other end of the lead screw.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, by setting up a detection component and a rotation component, when the lead screw is used for straightness detection, the displacement sensor moves along the axial direction of the lead screw to collect data in real time. When the lead screw is used for thread fit inspection, the stepper motor drives the lead screw to rotate through the coupling. At this time, the lead screw rotates under the limit of the bearing fixing plate and the bearing fixing ring. When the lead screw rotates, the torque sensor measures the rotational resistance torque of the lead screw. The integrated display terminal displays the straightness deviation curve and torque threshold alarm. By adopting an integrated detection design, straightness, thread fit and motion stability can be detected simultaneously, reducing repeated clamping. Furthermore, the quantitative results are directly output through the sensor and the terminal, reducing human interpretation error and realizing data visualization of the inspection fixture.

[0023] 2. In this utility model, by setting a quick-release assembly, one end of the lead screw is fixed in the arc-shaped groove by the first quick-release buckle. According to the length of the lead screw, the second slider moves on the guide rail, thereby driving the lead screw mounting base to move synchronously. The lead screw mounting base is then moved to the appropriate position by the second quick-release buckle. The structure is simple and can realize quick fixing and switching of the lead screw, improving the efficiency of the inspection tooling. At the same time, the inspection tooling has strong adaptability, covering the commonly used lead screw specifications of CBCT equipment, reducing the procurement cost of enterprises. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a lead screw precision inspection fixture for CBCT equipment.

[0025] Figure 2 This is an exploded structural diagram of the detection component in a lead screw precision inspection fixture for a CBCT device.

[0026] Figure 3 This is an exploded structural diagram of the rotating component in a lead screw precision inspection fixture for a CBCT device.

[0027] Figure 4 This is an exploded view of the quick-release assembly in a lead screw precision inspection fixture for a CBCT machine.

[0028] Legend:

[0029] 1. Support base; 2. Integrated display terminal; 3. Detection component; 31. Base; 32. Guide rail; 33. Photoelectric switch; 34. Bearing retaining plate; 35. First quick-release buckle; 36. Lead screw; 37. Torque sensor; 38. Bearing retaining ring; 39. Displacement sensor; 310. Support block; 311. Mounting plate; 4. Rotation component; 41. First slider; 42. Motor mounting base; 43. Coupling; 44. Stepper motor; 5. Quick-release component; 51. Second slider; 52. Photoelectric switch baffle; 53. Lead screw mounting base; 54. Second quick-release buckle. Detailed Implementation

[0030] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4 This utility model provides a technical solution: a screw precision inspection fixture for CBCT equipment, including a support base 1, a shock-absorbing pad fixedly installed on the lower surface of the support base 1, an integrated display terminal 2 fixedly installed on the upper surface of the support base 1, a microcontroller installed inside the integrated display terminal 2, and a detection component 3 provided on the upper surface of the support base 1.

[0032] The detection component 3 includes a base 31 and a lead screw 36. The lower surface of the base 31 is fixedly connected to the upper surface of the support base 1. A displacement sensor 39 is slidably mounted on the side wall of the base 31. A support block 310 and a mounting plate 311 are fixedly mounted on the upper surface of the base 31. A rotating component 4 and a quick-release component 5 are provided on the upper surface of the base 31. An arc-shaped groove is provided on the upper surface of the support block 310. Bearing fixing pieces 34 are fixedly mounted on both side walls of the support block 310. A photoelectric switch 33 is fixedly mounted on the outer surface of the support block 310. A mounting groove is provided on the upper surface of the support block 310. A first quick-release buckle 35 is rotatably mounted on the inner wall of the mounting groove via a rotating shaft. A guide rail 32 is fixedly mounted on the side wall of the mounting plate 311. One end of the guide rail 32 passes through the interior of the support block 310 and extends to the outside of the side wall of the support block 310. Each component is fixedly mounted with a bearing retaining ring 38. A torque sensor 37 is fixedly mounted on the side wall of the bearing retaining ring 38. The fixed end of the torque sensor 37 passes through the interior of the mounting plate 311. One end of the lead screw 36 is fixedly connected to the connecting end of the torque sensor. The quick-release assembly 5 includes a second slider 51. The lower surface of the second slider 51 is provided with a sliding groove, which is slidably connected to the outer surface of the guide rail 32. The lower surface of the second slider 51 contacts the upper surface of the base 31. A light-blocking baffle 52 is fixedly mounted on the side wall of the second slider 51. A lead screw mounting base 53 is fixedly mounted on the upper surface of the second slider 51. The upper surface of the lead screw mounting base 53 is provided with a placement groove. One end of the light-blocking baffle 52 is fixedly connected to the side wall of the lead screw mounting base 53. The upper surface of the lead screw mounting base 53 is provided with a connecting groove, and a second quick-release buckle 54 is rotatably mounted in the connecting groove via a rotating shaft.

[0033] The specific implementation method is as follows: First, insert one end of the lead screw 36 into the connection end of the torque sensor 37, and then place the lead screw 36 into the arc-shaped groove of the support block 310. Then, fix one end of the lead screw in the arc-shaped groove through the first quick-release buckle 35. According to the length of the lead screw 36, move the second slider 51 on the guide rail 32, thereby driving the lead screw mounting base 53 to move synchronously, so that the lead screw mounting base 53 moves to the appropriate position. Then, fix the lead screw 36 to the lead screw mounting base 53 through the second quick-release buckle 54. When the lead screw 36 is used for straightness detection, move the displacement sensor 39 along the axial direction of the lead screw 36, thereby collecting data of the lead screw 36 in real time.

[0034] The rotating assembly 4 includes a first slider 41, the lower surface of which is provided with a groove, the inner wall of which is slidably connected to the guide rail 32, the lower surface of which is in contact with the upper surface of the base 31, a motor mounting base 42 is fixedly mounted on the upper surface of the first slider 41, a stepper motor 44 is fixedly mounted on the upper surface of the motor mounting base 42, a coupling 43 is fixedly mounted on the output end of the stepper motor 44, and the connecting end of the coupling 43 is fixedly connected to the other end of the lead screw 36.

[0035] The specific implementation method is as follows: The first slider 41 drives the motor mounting base 42 to move on the guide rail 32 to the other end of the lead screw 36, thereby driving the stepper motor 44 to move synchronously. Then, the connecting end of the coupling 43 is fixedly connected to the other end of the lead screw 36. When the lead screw 36 is inspected for thread fit, the stepper motor 44 drives the lead screw 36 to rotate through the coupling 43. At this time, the lead screw 36 rotates under the limit of the bearing fixing plate 34 and the bearing fixing ring 38. When the lead screw 36 rotates, the torque sensor 37 measures the rotational resistance torque of the lead screw 36. The integrated display terminal 2 will display the straightness deviation curve and torque threshold alarm.

[0036] Working principle: First, insert one end of the lead screw 36 into the connection end of the torque sensor 37. Then, place the lead screw 36 into the arc-shaped groove of the support block 310. Next, fix one end of the lead screw in the arc-shaped groove using the first quick-release buckle 35. Based on the length of the lead screw 36, move the second slider 51 on the guide rail 32, thereby driving the lead screw mounting base 53 to move synchronously to the appropriate position. Then, fix the lead screw 36 to the lead screw mounting base 53 using the second quick-release buckle 54. The first slider 41 drives the motor mounting base 42 to move on the guide rail 32 towards the other end of the lead screw 36, thereby driving the stepper motor... The machine 44 moves synchronously, and then the connecting end of the coupling 43 is fixedly connected to the other end of the lead screw 36. When the lead screw 36 is being tested for straightness, the displacement sensor 39 moves along the axial direction of the lead screw 36 to collect data on the lead screw 36 in real time. When the lead screw 36 is being tested for thread fit, the stepper motor 44 drives the lead screw 36 to rotate through the coupling 43. At this time, the lead screw 36 rotates under the limit of the bearing fixing plate 34 and the bearing fixing ring 38. When the lead screw 36 rotates, the torque sensor 37 measures the rotational resistance torque of the lead screw 36. The integrated display terminal 2 will display the straightness deviation curve and torque threshold alarm.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tooling for inspecting the precision of a lead screw in a CBCT device, comprising a support base (1), characterized in that: The lower surface of the support base (1) is fixedly equipped with shock-absorbing pads, and the upper surface of the support base (1) is fixedly equipped with an integrated display terminal (2). The integrated display terminal (2) is equipped with a microcontroller, and the upper surface of the support base (1) is provided with a detection component (3). The detection component (3) includes a base (31) and a lead screw (36). The lower surface of the base (31) is fixedly connected to the upper surface of the support base (1). A displacement sensor (39) is slidably installed on the side wall of the base (31). A support block (310) and a mounting plate (311) are fixedly installed on the upper surface of the base (31). A rotating component (4) and a quick-release component (5) are provided on the upper surface of the base (31).

2. The CBCT equipment lead screw accuracy inspection fixture according to claim 1, characterized in that, The upper surface of the support block (310) is provided with an arc-shaped groove, and bearing fixing plates (34) are fixedly installed on both sides of the support block (310). A photoelectric switch (33) is fixedly installed on the outer surface of the support block (310).

3. The CBCT equipment lead screw accuracy inspection fixture according to claim 2, characterized in that, The upper surface of the support block (310) is provided with an installation groove. A first quick-release buckle (35) is rotatably installed on the inner wall of the installation groove via a rotating shaft. A guide rail (32) is fixedly installed on the side wall of the mounting plate (311). One end of the guide rail (32) passes through the interior of the support block (310) and extends to the outside of the side wall of the support block (310).

4. The CBCT equipment lead screw accuracy inspection fixture according to claim 3, characterized in that, Bearing retaining rings (38) are fixedly installed on both sides of the mounting plate (311). Torque sensors (37) are fixedly installed on the side walls of the bearing retaining rings (38). The fixed end of the torque sensor (37) passes through the interior of the mounting plate (311). One end of the lead screw (36) is fixedly connected to the connecting end of the torque sensor.

5. The CBCT equipment lead screw accuracy inspection fixture according to claim 4, characterized in that, The quick-release assembly (5) includes a second slider (51), the lower surface of the second slider (51) is provided with a groove, the groove is slidably connected to the outer surface of the guide rail (32), the lower surface of the second slider (51) is in contact with the upper surface of the base (31), and a light-blocking baffle (52) is fixedly installed on the side wall of the second slider (51).

6. The CBCT equipment lead screw accuracy inspection fixture according to claim 5, characterized in that, The upper surface of the second slider (51) is fixedly mounted with a lead screw mounting base (53). The upper surface of the lead screw mounting base (53) is provided with a placement groove. One end of the open baffle (52) is fixedly connected to the side wall of the lead screw mounting base (53). The upper surface of the lead screw mounting base (53) is provided with a connecting groove. The connecting groove is rotatably mounted with a second quick-release buckle (54) via a rotating shaft.

7. The CBCT equipment lead screw accuracy inspection fixture according to claim 6, characterized in that, The rotating assembly (4) includes a first slider (41), the lower surface of the first slider (41) is provided with a groove, the inner wall of the groove is slidably connected to the guide rail (32), the lower surface of the first slider (41) is in contact with the upper surface of the base (31), and a motor mounting base (42) is fixedly installed on the upper surface of the first slider (41).

8. The CBCT equipment lead screw accuracy inspection fixture according to claim 7, characterized in that, A stepper motor (44) is fixedly mounted on the upper surface of the motor mounting base (42), and a coupling (43) is fixedly mounted on the output end of the stepper motor (44). The connecting end of the coupling (43) is fixedly connected to the other end of the lead screw (36).

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