Machine root canal file fatigue test tool

Abstract

The utility model relates to the technical field of mechanical root canal file fatigue test tools, in particular to a mechanical root canal file fatigue test tool which comprises a root canal motor, a mechanical root canal file, a dynamic torque sensor, a potentiometer, a motor and a tool bottom plate. A root canal motor is installed on the tool bottom plate through a motor supporting frame, the top of the root canal motor is movably connected with an organic root canal file, the top end of the organic root canal file is fixed through a chuck, and the chuck is rotationally connected to a motor output shaft through a dynamic torque sensor. The motor is electrically connected with the potentiometer, and the torque sensor is electrically connected with the torque display. According to the device, constant torque is provided for different positions of the root canal file, and the complex environment of each section in the root canal is simulated; and more reasonable use parameters are given by checking the fatigue performance under the recommended rotating speed and torque of the root canal file.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing tooling for machine root canal files, in particular to a fatigue testing tooling for machine root canal files. Background Art

[0002] Root canal instrument fracture is a common oral clinical complication. Therefore, it is of great clinical significance to study the cyclic fatigue performance of machine-used root canal files. At present, the commonly used detection method of manufacturers is to use a root canal motor to insert the root canal file into the tooling groove, use the recommended working speed and torque cycle test until the root canal file breaks, and record the fatigue time of the root canal file. Or use the method of simulating cutting resin blocks to test the fatigue resistance of the root canal file. However, these methods cannot imitate the cutting environment in the root canal, and cannot give the root canal file the torque that has been claimed, which is quite different from clinical use. The utility model can adjust the motor output shaft resistance through a potentiometer, apply a constant torque at different positions (different clamping lengths) of the root canal file, and cooperate with the root canal motor to cyclically test whether the fatigue resistance meets the standard, and at the same time, it can verify whether the recommended working speed and torque are reasonable. Utility Model Content

[0003] In order to overcome the existing deficiencies, the utility model provides a machine-used root canal file fatigue testing tool, which is a new type of root canal file fatigue performance testing tool. Compared with the ordinary root canal file fatigue performance testing tool: 1. It provides a segmented constant torque, which is helpful for studying the overall structural design of the root canal file; 2. It can help manufacturers reversely verify the rationality of the root canal file usage parameters.

[0004] The utility model solves the technical problem by adopting the following technical solution: a machine root canal file fatigue test tool, comprising a root canal motor, a machine root canal file, a dynamic torque sensor, a potentiometer, a motor and a tool base plate; a root canal motor is installed on the tool base plate through a motor support frame, a machine root canal file is movably connected to the top of the root canal motor, a top of the machine root canal file is fixed by a chuck, and the chuck is rotatably connected to the motor output shaft through a dynamic torque sensor; the motor is electrically connected to the potentiometer, and the torque sensor is electrically connected to the torque display.

[0005] According to another embodiment of the utility model, the motor support frame is further provided with two groups, and both sides of each group are used to lock the root canal motor through locking knobs.

[0006] According to another embodiment of the utility model, the chuck is further connected to the output shaft of the torque sensor via a connecting shaft, and the connecting shaft is fixed to the tooling bottom plate via a connecting shaft support plate.

[0007] According to another embodiment of the utility model, it further includes that the connecting shaft support plate is installed on the tooling bottom plate, and a through hole is provided in the middle, and the connecting shaft passes through the through hole.

[0008] According to another embodiment of the utility model, it further includes that one end of the torque sensor is connected to the connecting shaft, and the other end is connected to the coupling, and the coupling is fixed on the motor.

[0009] According to another embodiment of the utility model, the motor is further included: the motor is fixed on a motor support plate, the output shaft passes through the motor support plate and is connected to a coupling; the motor support plate is fixed on a tooling bottom plate.

[0010] According to another embodiment of the utility model, it further includes that the potentiometer and the torque display are fixed on a display support plate, and the display support plate is fixed on a tooling bottom plate.

[0011] The beneficial effects of the utility model are that a constant torque can be applied to different positions of the root canal file to simulate the complex environment of each section in the root canal; and more reasonable use parameters can be provided by checking the fatigue performance of the root canal file under the recommended rotation speed and torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a rear view of the utility model.

[0015] In the figure, 1, root canal motor, 2, machine root canal file, 3, chuck, 4, connecting shaft, 5, connecting shaft support plate, 6, dynamic torque sensor, 7, coupling, 8, motor support plate, 9, motor, 10, potentiometer, 11, torque display, 12, tooling base, 13, locking knob, and 14, motor support base. DETAILED DESCRIPTION

[0016] like Figure 1 It is a structural schematic diagram of the utility model, a machine root canal file fatigue test fixture, which is characterized in that it includes a root canal motor 1, a machine root canal file 2, a dynamic torque sensor 6, a potentiometer 10, a motor 9 and a fixture base plate 12; the root canal motor 1 is installed on the fixture base plate 12 through a motor support frame 14, the top of the root canal motor 1 is movably connected with the machine root canal file 2, the top of the machine root canal file 2 is fixed by a chuck 3, and the chuck 3 is rotatably connected to the output shaft of the motor 9 through the dynamic torque sensor 6; the motor 9 is electrically connected to the potentiometer 10, and the dynamic torque sensor 6 is electrically connected to the torque display 11.

[0017] Specifically, the motor 9 and the potentiometer 10 provide a constant resistance to the file tip during the rotation of the machine root canal file 2, thereby achieving the effect of fatigue testing.

[0018] According to another embodiment of the utility model, the motor support frame 14 is further provided with two groups, and both sides of each group are locked with the root canal motor 1 by means of locking knobs 13 .

[0019] According to another embodiment of the utility model, the chuck 3 is further connected to the output shaft of the torque sensor 6 via a connecting shaft 4 , and the connecting shaft 4 is fixed on the tooling base plate 12 via a connecting shaft support plate 5 .

[0020] According to another embodiment of the utility model, the connecting shaft support plate 5 is further included, and is installed on the tooling bottom plate 12, and a through hole is provided in the middle, and the connecting shaft 4 passes through the through hole.

[0021] According to another embodiment of the utility model, further comprising: one end of the torque sensor 6 is connected to the connecting shaft 4 , and the other end is connected to the coupling 7 , and the coupling 7 is fixed on the motor 9 .

[0022] According to another embodiment of the utility model, the motor 9 is further fixed on the motor support plate 8, and the output shaft passes through the motor support plate 8 to connect the coupling 7; the motor support plate 8 is fixed on the tooling bottom plate 12.

[0023] According to another embodiment of the utility model, the potentiometer 10 and the torque display 11 are further fixed on a display support plate, and the display support plate is fixed on a tooling bottom plate 12 .

[0024] The specific operation process is to change the resistance value between the positive and negative poles of the motor 9 by adjusting the knob of the potentiometer 10, and turn the chuck 3 to confirm through the torque display 11 that the torque of the output shaft of the motor 9 is the set torque, that is, the recommended torque of the root canal file, and install the handle of the machine-used root canal file 2 to be tested into the root canal motor 1. The chuck 3 clamps the tip of the root canal file, and the insertion length of the tip is adjusted according to actual needs. The speed of the root canal motor 1 is adjusted to the recommended speed of the root canal file, and the torque of the root canal motor 1 is adjusted to 1.5 times the recommended torque of the root canal file. The purpose is to prevent the root canal motor 1 from starting the reverse protection program. The fatigue fracture time of the root canal file is recorded in a cyclic test to evaluate the anti-fatigue performance of the machine-used root canal file.

[0025] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. A machine root canal file fatigue test tool, characterized in that: The invention comprises a root canal motor (1), a machine root canal file (2), a dynamic torque sensor (6), a potentiometer (10), a motor (9) and a tooling base plate (12); the root canal motor (1) is mounted on the tooling base plate (12) via a motor support frame (14); the top of the root canal motor (1) is movably connected to the machine root canal file (2); the top of the machine root canal file (2) is fixed via a chuck (3); the chuck (3) is rotatably connected to the output shaft of the motor (9) via the dynamic torque sensor (6); the motor (9) is electrically connected to the potentiometer (10); and the dynamic torque sensor (6) is electrically connected to the torque display (11).

2. The machine root canal file fatigue test tool according to claim 1, characterized in that: The motor support frame (14) is provided with two groups, and both sides of each group are used to lock the root canal motor (1) via a locking knob (13).

3. The machine root canal file fatigue test tool according to claim 1, characterized in that: The chuck (3) is connected to the output shaft of the torque sensor (6) via a connecting shaft (4), and the connecting shaft (4) is fixed to the tooling base plate (12) via a connecting shaft support plate (5).

4. The machine root canal file fatigue test tool according to claim 3, characterized in that: The connecting shaft support plate (5) is mounted on the tooling base plate (12), and is provided with a through hole in the middle, through which the connecting shaft (4) passes.

5. The machine root canal file fatigue test tool according to claim 1, characterized in that: One end of the torque sensor (6) is connected to the connecting shaft (4), and the other end is connected to the coupling (7), and the coupling (7) is fixed on the motor (9).

6. The machine root canal file fatigue test tool according to claim 5, characterized in that: The motor (9) is fixed on the motor support plate (8), and the output shaft passes through the motor support plate (8) and is connected to the coupling (7); the motor support plate (8) is fixed on the tooling bottom plate (12).

7. The machine root canal file fatigue test tool according to claim 1, characterized in that: The potentiometer (10) and the torque display (11) are fixed on a display support plate, and the display support plate is fixed on a tooling bottom plate (12).

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