Portable multifunctional machine tool fault detection device

Abstract

The utility model discloses a portable multifunctional machine tool fault detection device, and relates to the technical field of machine tool maintenance. The device comprises a mounting plate, a detection assembly is arranged on the upper surface of the mounting plate, and a grip assembly is further arranged on the lower surface of the mounting plate; the detection assembly comprises a detection shell fixedly connected to the upper surface of the mounting plate. According to the utility model, the odor sensor and the visual camera in the detection shell are used for carrying out fault detection on the machine tool in various modes, and the driving rack drives the gas collecting hood to rotate in a reciprocating manner, so that air on the machine tool is guided into the detection shell through the gas collecting hood for detection; the problems that in the prior art, the function is single, and fault detection cannot be conveniently conducted on the interior of the machine tool are solved, meanwhile, the mounting plate and the detection structure are conveniently held through the holding rod, the position and angle of the detection structure are adjusted through the second lead screw, the second U-shaped frame and the third U-shaped frame, and the problem that in the prior art, carrying is not convenient is solved.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool maintenance technology, and in particular relates to a portable multi-functional machine tool fault detection device. Background Technology

[0002] Machine tools are machines used to manufacture machinery and are one of the important foundations of industrial manufacturing. At the same time, the quality of the machine tool itself directly affects the quality of the machine it produces. Therefore, fault detection and repair of machine tools is an important step in the daily maintenance and repair of machine tools. In order to facilitate fault detection of machine tools, fault detection devices are usually used.

[0003] A CNC machine tool fault detection device is disclosed in document CN222493373U, including a moving mechanism and a detection mechanism at one end of the outer wall of the moving mechanism; the detection mechanism includes a frame, a vision inspection camera is rotatably connected to the inner wall of the frame, a fourth motor is fixedly installed on one side of the outer wall of the frame, the output shaft of the fourth motor passes through the inner wall of the frame and is fixedly connected to one end of the outer wall of the vision inspection camera, an illumination lamp is provided at the top of the vision inspection camera, and a cleaning fan is provided on the outer wall of the vision inspection camera;

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The CNC machine tool fault detection device mentioned above takes pictures of various parts of the machine tool through a vision inspection camera, and provides brightness to the vision inspection camera and cleans the dust through a lighting lamp and a cleaning fan, respectively. However, in use, it can only take pictures of the machine tool. It is not convenient to detect the odor caused by the machine tool fault, resulting in poor functionality. It is also not convenient to detect faults in parts of the machine tool that are not easy to take pictures of.

[0006] 2. The CNC machine tool fault detection device mentioned above uses a moving mechanism to drive the vision inspection camera to move, thereby improving the detection accuracy. It also uses a fourth motor to drive the vision inspection camera to rotate, thereby changing the pitch angle of the vision inspection camera. However, its overall size is large and it is not convenient to carry, which makes it difficult to detect machine tool faults.

[0007] To address these issues, we provide a portable, multi-functional machine tool fault detection device. Utility Model Content

[0008] The purpose of this invention is to provide a portable, multifunctional machine tool fault detection device. It uses an odor sensor and a vision camera inside the detection housing to perform various fault detection methods on the machine tool. A drive rack rotates the air collection hood, drawing air from the machine tool into the detection housing for testing. This solves the problem of existing technologies having limited functionality and being inconvenient for internal machine tool fault detection. Furthermore, the grip lever allows for easy holding of the mounting plate and detection structure. The position and angle of the detection structure can be adjusted via a second lead screw, a second U-shaped frame, and a third U-shaped frame, addressing the issue of inconvenience in carrying existing technologies.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model is a portable multi-functional machine tool fault detection device, including a mounting plate. The upper surface of the mounting plate is provided with a detection component for detecting machine tool faults, and the lower surface of the mounting plate is provided with a grip component for holding the mounting plate.

[0011] The detection assembly includes a detection shell fixedly connected to the upper surface of the mounting plate. A vision camera for taking pictures and detecting machine tool malfunctions is fixedly connected to the top of the detection shell. An odor sensor for detecting burnt smells is fixedly connected to the top of the inner side of the detection shell. A fan runs through the rear end face of the detection shell. Mounting seats are fixedly connected to the upper and lower sides of the front end face of the detection shell. Mounting rods are rotatably connected to the mounting seats. The same gas collection hood is fixedly connected between the mounting rods. A drive gear is fixedly connected to the bottom end of the mounting rod located below the gas collection hood. A first U-shaped frame is fixedly connected to the lower side of the front end face of the detection shell. A drive rack is movably connected inside the first U-shaped frame. The drive rack meshes with the rear end of the drive gear.

[0012] The grip assembly includes a grip bar located below the mounting plate for holding. A second lead screw is rotatably connected inside the grip bar. A second slider is threaded onto the outer wall of the second lead screw. Connecting rods are fixedly connected to the top of the second slider around its perimeter. The top of the connecting rods movably passes through the top of the grip bar and is fixedly connected to the same movable plate. A third protective shell is fixedly connected to the upper surface of the movable plate. A second U-shaped frame is fixedly connected to the top of the third protective shell. A third U-shaped frame is rotatably connected above the second U-shaped frame. The mounting plate is rotatably connected to the top of the transverse support arm of the third U-shaped frame.

[0013] A further feature of this invention is that an L-shaped frame is fixedly connected to the top of the detection housing, and a vision camera is fixedly connected to the vertical support arm of the L-shaped frame.

[0014] A further feature of this invention is that a telescopic hose extends through the rear end of the gas collecting hood, the rear end of the telescopic hose extends through the front end of the detection shell and into the interior of the detection shell, and a dustproof net is fixedly connected inside the gas collecting hood.

[0015] A further feature of this invention is that mounting posts are fixedly connected to both sides of the rear end face of the first U-shaped frame, and the rear ends of the mounting posts are fixedly connected to both sides below the front end face of the detection shell.

[0016] A further feature of this invention is that: a second motor is fixedly connected to one side of the inner wall of the first U-shaped frame via a mounting bracket; a first lead screw is fixedly connected to the output shaft of the second motor; one end of the first lead screw away from the second motor is rotatably connected to the other side of the inner wall of the first U-shaped frame; a first slider is threaded onto the outer wall of the first lead screw; and a drive rack is fixedly connected to the front end face of the first slider.

[0017] A further feature of this invention is that: protruding strips are fixedly connected horizontally to both the upper and lower sides of the interior of the first U-shaped frame, and the front end of the protruding strips is movably connected to the groove located on the rear end face of the first slider.

[0018] A further feature of this invention is that a rubber sleeve is fitted at the center of the outer wall of the grip, and a third motor is fixedly connected to the bottom end of the grip via a second protective shell. The output shaft of the third motor is fixedly connected to the bottom end of the second lead screw.

[0019] A further feature of this invention is that a fourth motor is fixedly connected inside the third protective shell. The output shaft of the fourth motor rotates through the horizontal support arm of the second U-shaped frame and is fitted with a first bevel gear. A fixing rod rotates through the vertical support arm of the second U-shaped frame. One end of the fixing rod located on the outside of the second U-shaped frame is fixedly connected to the inner walls of both sides of the third U-shaped frame. The other end of the fixing rod located on the inside of the second U-shaped frame is fitted with a second bevel gear. The second bevel gears mesh with the upper sides of the first bevel gear.

[0020] A further feature of this invention is that the bottom of the transverse support arm of the third U-shaped frame is fixedly connected to a first motor via a first protective shell, and the output shaft of the first motor rotates through the transverse support arm of the third U-shaped frame and is fixedly connected to the center position of the lower surface of the mounting plate.

[0021] A further feature of this invention is that: arc-shaped blocks are fixedly connected to all four sides of the outer side of the lower surface of the mounting plate, and a circular groove is opened on the top outer side of the third U-shaped frame transverse support arm, with the bottom of the arc-shaped blocks movably connected to the inside of the circular groove.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model, by setting up a detection component, starts the second motor inside the first U-shaped frame. The second motor drives the first lead screw to rotate, and the first lead screw drives the first slider to move. This causes the first slider to drive the drive rack to move laterally, and the drive rack drives the drive gear to rotate reciprocally. The drive gear drives the air collection hood to rotate reciprocally. The air collection hood and the fan introduce the air around the machine tool into the detection housing. The odor sensor inside the detection housing detects the burnt smell in the air around the machine tool. At the same time, a vision camera takes pictures of various parts of the machine tool for inspection, realizing fault detection of the machine tool, increasing its functionality, and also facilitating fault detection of parts of the machine tool that are difficult to photograph, such as the inside of the machine tool.

[0024] 2. This utility model, by setting up a grip assembly, starts a third motor. The output shaft of the third motor drives the second lead screw to rotate. The second lead screw drives the movable plate to rise and fall through the second slider. In turn, the movable plate drives the mounting plate and the detection structure to rise and fall. At the same time, the first motor and the fourth motor are started. The output shaft of the first motor drives the mounting plate to rotate relative to the third U-shaped frame, and the output shaft of the fourth motor drives the third U-shaped frame to rotate relative to the second U-shaped frame. This realizes the adjustment of the position and angle of the detection structure, which facilitates the fault detection of the machine tool, and at the same time reduces its overall size, making it easy to carry. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a structural disassembly diagram of the mounting plate of this utility model.

[0028] Figure 3 This is a schematic diagram of the detection component of this utility model.

[0029] Figure 4 This is a side cross-sectional view of the detection shell of this utility model.

[0030] Figure 5 This is a structural disassembly diagram of the gas collection hood of this utility model.

[0031] Figure 6 This is a structural disassembly diagram of the first U-shaped frame, the first lead screw, and the drive rack of this utility model.

[0032] Figure 7 This is a schematic diagram of the grip assembly of this utility model.

[0033] Figure 8This is a front cross-sectional view of the grip bar of this utility model.

[0034] Figure 9 This is a structural disassembly diagram of the second U-shaped frame of this utility model.

[0035] Figure 10 This is a structural disassembly diagram of the third U-shaped frame of this utility model.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1-Mounting plate, 101-First protective shell, 102-First motor, 103-Arc-shaped block, 2-Detection assembly, 201-Detection shell, 201a-L-shaped frame, 201b-Odor sensor, 201c-Fan, 202-Vision camera, 203-Gas collection hood, 203a-Mounting base, 203b-Mounting rod, 203c-Drive gear, 203d-Telescopic hose, 203e-Dustproof net, 204-First U-shaped frame, 204a-Mounting column, 204b-Protruding strip, 205-First lead screw, 205a-Mounting bracket, 205 b-Second motor, 206-Drive rack, 206a-First slider, 3-Grip assembly, 301-Grip bar, 301a-Rubber sleeve, 302-Second lead screw, 302a-Second protective shell, 302b-Third motor, 303-Moving plate, 303a-Second slider, 303b-Connecting rod, 304-Second U-shaped frame, 304a-Third protective shell, 304b-Fourth motor, 304c-First bevel gear, 305-Third U-shaped frame, 305a-Fixing rod, 305b-Second bevel gear, 305c-Circular groove. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0039] Example 1

[0040] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, this is the first embodiment of the present invention. This embodiment provides a portable multi-functional machine tool fault detection device, including a mounting plate 1. The upper surface of the mounting plate 1 is provided with a detection component 2 for fault detection of the machine tool. The detection component 2 includes a detection housing 201, a vision camera 202, a gas collection hood 203, a first U-shaped frame 204, and a drive rack 206. The odor sensor 201b and the vision camera 202 in the detection housing 201 perform fault detection on the machine tool in various ways. The drive rack 206 drives the gas collection hood 203 to reciprocate, thereby introducing the air on the machine tool into the detection housing 201 for detection. This solves the problem that the prior art has a single function and is not convenient for fault detection inside the machine tool.

[0041] Specifically, the detection housing 201 is fixedly connected to the upper surface of the mounting plate 1. A vision camera 202 for fault imaging detection of the machine tool is fixedly connected to the top of the detection housing 201. An odor sensor 201b for detecting burnt odor is fixedly connected to the top inner side of the detection housing 201. A fan 201c passes through the rear end face of the detection housing 201. Mounting seats 203a are fixedly connected to both the upper and lower sides of the front end face of the detection housing 201. Mounting rods 203b are rotatably connected to the mounting seats 203a. The same gas collection hood 203 is fixedly connected between the mounting rods 203b. A drive gear 203c is fixedly connected to the bottom end of the mounting rods 203b located below the gas collection hood 203. A first U-shaped frame 204 is fixedly connected to the lower part of the front end face of the detection housing 201. A drive rack 206 is movably connected inside the frame 204. The drive rack 206 meshes with the rear end of the drive gear 203c. The detection housing 201, in conjunction with the odor sensor 201b, is used to detect whether there is a burnt smell on the machine tool. The fan 201c and the air collection hood 203 are used to introduce the air around the machine tool into the detection housing 201 for detection. The vision camera 202 is used to take pictures of the machine tool for detection. The mounting base 203a and the mounting rod 203b are used to movably mount the air collection hood 203 on the front end of the detection housing 201. The drive gear 203c is used to drive the air collection hood 203 to rotate. The first U-shaped frame 204 is used to mount the drive rack 206, and the drive rack 206 is used to rotate the drive gear 203c.

[0042] Furthermore, an L-shaped frame 201a is fixedly connected to the top of the detection housing 201, and a vision camera 202 is fixedly connected to the vertical support arm of the L-shaped frame 201a.

[0043] A telescopic hose 203d passes through the rear end of the gas collection hood 203. The rear end of the telescopic hose 203d passes through the front end of the detection shell 201 and extends into the interior of the detection shell 201. A dustproof net 203e is fixedly connected inside the gas collection hood 203.

[0044] Mounting posts 204a are fixedly connected to both sides of the rear end face of the first U-shaped frame 204, and the rear ends of the mounting posts 204a are fixedly connected to both sides below the front end face of the detection shell 201.

[0045] A second motor 205b is fixedly connected to one side of the interior of the first U-shaped frame 204 via a mounting bracket 205a. The output shaft of the second motor 205b is fixedly connected to a first lead screw 205. One end of the first lead screw 205 away from the second motor 205b is rotatably connected to the other side of the interior of the first U-shaped frame 204. A first slider 206a is threaded onto the outer wall of the first lead screw 205. A drive rack 206 is fixedly connected to the front end face of the first slider 206a.

[0046] The first U-shaped frame 204 has convex strips 204b fixedly connected horizontally at both the upper and lower sides of its interior. The front end of the convex strip 204b is movably connected to the groove located on the rear end face of the first slider 206a.

[0047] The operation process of this embodiment is as follows: The second motor 205b inside the first U-shaped frame 204 is started. The second motor 205b drives the first lead screw 205 to rotate. The first lead screw 205 drives the first slider 206a to move, thereby causing the first slider 206a to drive the drive rack 206 to move laterally. The drive rack 206 drives the drive gear 203c to rotate reciprocally. The drive gear 203c drives the air collection hood 203 to rotate reciprocally. The air around the machine tool is introduced into the detection housing 201 through the air collection hood 203 and the fan 201c. The odor sensor 201b inside the detection housing 201 detects the burnt smell in the air around the machine tool. At the same time, the vision camera 202 takes pictures of various parts of the machine tool to detect faults in the machine tool.

[0048] Example 2

[0049] Please see Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: the lower surface of the mounting plate 1 is also provided with a grip assembly 3 for holding the mounting plate 1. The grip assembly 3 includes a grip rod 301, a second lead screw 302, a movable plate 303, a second U-shaped frame 304, and a third U-shaped frame 305. The grip rod 301 facilitates the gripping of the mounting plate 1 and the detection structure. The second lead screw 302, the second U-shaped frame 304, and the third U-shaped frame 305 adjust the position and angle of the detection structure, thus solving the problem of inconvenience in carrying the prior art.

[0050] Specifically, a second lead screw 302 is rotatably connected inside the grip 301. A second slider 303a is threaded onto the outer wall of the second lead screw 302. Connecting rods 303b are fixedly connected to the top of the second slider 303a around its perimeter. The top of the connecting rods 303b movably passes through the top of the grip 301 and is fixedly connected to the same movable plate 303. A third protective shell 304a is fixedly connected to the upper surface of the movable plate 303. A second U-shaped frame 304 is fixedly connected to the top of the third protective shell 304a. A third U-shaped frame 305 is rotatably connected above the second U-shaped frame 304. The mounting plate 1 is rotatably connected to the top of the transverse support arm of the third U-shaped frame 305.

[0051] Furthermore, a rubber sleeve 301a is fitted at the center of the outer wall of the grip 301, and a third motor 302b is fixedly connected to the bottom end of the grip 301 through the second protective shell 302a. The output shaft of the third motor 302b is fixedly connected to the bottom end of the second lead screw 302.

[0052] A fourth motor 304b is fixedly connected inside the third protective shell 304a. The output shaft of the fourth motor 304b rotates through the horizontal support arm of the second U-shaped frame 304 and is fitted with a first bevel gear 304c. A fixed rod 305a rotates through the vertical support arm of the second U-shaped frame 304. The end of the fixed rod 305a located on the outside of the second U-shaped frame 304 is fixedly connected to the inner walls of both sides of the third U-shaped frame 305. The end of the fixed rod 305a located on the inside of the second U-shaped frame 304 is fitted with a second bevel gear 305b. The second bevel gear 305b meshes with the upper two sides of the first bevel gear 304c.

[0053] The bottom of the horizontal support arm of the third U-shaped frame 305 is fixedly connected to the first motor 102 through the first protective shell 101. The output shaft of the first motor 102 rotates through the horizontal support arm of the third U-shaped frame 305 and is fixedly connected to the center position of the lower surface of the mounting plate 1.

[0054] Arc-shaped blocks 103 are fixedly connected to the outer perimeter of the lower surface of the mounting plate 1. A circular groove 305c is provided on the outer top of the horizontal support arm of the third U-shaped frame 305. The bottom of the arc-shaped block 103 is movably connected to the inside of the circular groove 305c.

[0055] The rest of the structure is the same as in Example 1.

[0056] The operation process of this embodiment is as follows: The third motor 302b is started. The output shaft of the third motor 302b drives the second lead screw 302 to rotate. The second lead screw 302 drives the movable plate 303 to rise and fall through the second slider 303a. Thus, the movable plate 303 drives the mounting plate 1 and the detection structure to rise and fall. At the same time, the first motor 102 and the fourth motor 304b are started. The output shaft of the first motor 102 drives the mounting plate 1 to rotate relative to the third U-shaped frame 305. The output shaft of the fourth motor 304b drives the third U-shaped frame 305 to rotate relative to the second U-shaped frame 304. This realizes the adjustment of the position and angle of the detection structure, which facilitates the fault detection of the machine tool.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A portable multi-functional machine tool fault detection device, comprising a mounting plate (1), characterized in that: The upper surface of the mounting plate (1) is provided with a detection component (2) for detecting machine tool faults, and the lower surface of the mounting plate (1) is also provided with a grip component (3) for holding the mounting plate (1). The detection component (2) includes a detection shell (201) fixedly connected to the upper surface of the mounting plate (1), and a vision camera (202) for taking pictures of machine tool faults is fixedly connected to the top of the detection shell (201). An odor sensor (201b) for detecting burnt smell is fixedly connected to the top of the inner side of the detection shell (201). A fan (201c) passes through the rear end face of the detection shell (201). Mounting bases (203a) are fixedly connected to the upper and lower sides of the front end face of the detection shell (201). (203a) is rotatably connected to an mounting rod (203b), and the mounting rods (203b) are fixedly connected to the same gas collection hood (203). The bottom end of the mounting rod (203b) located below the gas collection hood (203) is fixedly connected to a drive gear (203c). The front end face of the detection shell (201) is fixedly connected to a first U-shaped frame (204), and a drive rack (206) is movably connected inside the first U-shaped frame (204). The drive rack (206) meshes with the rear end of the drive gear (203c). The grip assembly (3) includes a grip bar (301) located below the mounting plate (1) for gripping, and a second lead screw (302) is rotatably connected inside the grip bar (301). A second slider (303a) is threaded on the outer wall of the second lead screw (302), and a connecting rod (303b) is fixedly connected to the top of the second slider (303a) around its perimeter. The top end of the connecting rod (303b) movably passes through the top end of the grip bar (301) and is fixedly connected to the same movable plate (303). A third protective shell (304a) is fixedly connected to the upper surface of the movable plate (303). A second U-shaped frame (304) is fixedly connected to the top of the third protective shell (304a), and a third U-shaped frame (305) is rotatably connected above the second U-shaped frame (304). The mounting plate (1) is rotatably connected to the top of the transverse support arm of the third U-shaped frame (305).

2. The portable multi-functional machine tool fault detection device according to claim 1, characterized in that, The top of the detection housing (201) is fixedly connected to an L-shaped frame (201a), and the vision camera (202) is fixedly connected to the vertical support arm of the L-shaped frame (201a).

3. The portable multi-functional machine tool fault detection device according to claim 1, characterized in that, The rear end of the gas collection hood (203) is connected to a telescopic hose (203d), and the rear end of the telescopic hose (203d) passes through the front end of the detection shell (201) and extends into the interior of the detection shell (201). A dustproof net (203e) is fixedly connected inside the gas collection hood (203).

4. The portable multi-functional machine tool fault detection device according to claim 1, characterized in that, The first U-shaped frame (204) has mounting posts (204a) fixedly connected to both sides of its rear end face, and the rear ends of the mounting posts (204a) are fixedly connected to both sides below the front end face of the detection shell (201).

5. The portable multi-functional machine tool fault detection device according to claim 1, characterized in that, A second motor (205b) is fixedly connected to one side of the interior of the first U-shaped frame (204) via a mounting bracket (205a), and the output shaft of the second motor (205b) is fixedly connected to a first lead screw (205). The end of the first lead screw (205) away from the second motor (205b) is rotatably connected to the other side of the interior of the first U-shaped frame (204), and a first slider (206a) is threaded on the outer wall of the first lead screw (205). The drive rack (206) is fixedly connected to the front end face of the first slider (206a).

6. The portable multi-functional machine tool fault detection device according to claim 5, characterized in that, The first U-shaped frame (204) has convex strips (204b) fixedly connected horizontally on both the upper and lower sides of its interior, and the front end of the convex strips (204b) is movably connected to the groove located on the rear end face of the first slider (206a).

7. A portable multi-functional machine tool fault detection device according to claim 1, characterized in that, A rubber sleeve (301a) is fitted at the center of the outer wall of the grip (301), and a third motor (302b) is fixedly connected to the bottom end of the grip (301) through a second protective shell (302a). The output shaft of the third motor (302b) is fixedly connected to the bottom end of the second lead screw (302).

8. A portable multi-functional machine tool fault detection device according to claim 1, characterized in that, The third protective shell (304a) is internally fixedly connected to a fourth motor (304b), and the output shaft of the fourth motor (304b) rotatably passes through the horizontal support arm of the second U-shaped frame (304) and is fitted with a first bevel gear (304c). The vertical support arm of the second U-shaped frame (304) is rotatably connected to a fixing rod (305a), and the end of the fixing rod (305a) located on the outside of the second U-shaped frame (304) is fixedly connected to the inner walls of both sides of the third U-shaped frame (305). The end of the fixing rod (305a) located on the inside of the second U-shaped frame (304) is fitted with a second bevel gear (305b), and the second bevel gear (305b) meshes with the upper two sides of the first bevel gear (304c).

9. A portable multi-functional machine tool fault detection device according to claim 1, characterized in that, The bottom of the horizontal support arm of the third U-shaped frame (305) is fixedly connected to the first motor (102) through the first protective shell (101), and the output shaft of the first motor (102) rotates through the horizontal support arm of the third U-shaped frame (305) and is fixedly connected to the center position of the lower surface of the mounting plate (1).

10. A portable multifunctional machine tool fault detection device according to claim 9, characterized in that, Arc-shaped blocks (103) are fixedly connected to the outer perimeter of the lower surface of the mounting plate (1), and a circular groove (305c) is provided on the outer side of the top of the horizontal support arm of the third U-shaped frame (305). The bottom of the arc-shaped block (103) is movably connected to the inside of the circular groove (305c).

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