Vibration inspection machine of electric tool

Abstract

The utility model discloses a vibration inspection machine of an electric tool, comprising a machine body, the machine body is provided with a control unit and a fixing tool used for clamping the electric tool to be tested, the fixing tool is provided with a vibration sensor used for sensing vibration, and the fixing tool comprises a tool fixing seat and a locking member. The locking piece is detachably fixed on the tool fixing seat, a clamping opening used for clamping an electric tool to be tested is formed between the locking piece and the tool fixing seat, the tool fixing seat is connected with the machine body through the vibration blocking piece so as to isolate vibration transmission between the tool fixing seat and the machine body, and the control unit is connected with the vibration sensor. And the signal detected and output by the vibration sensor is received, the consistency is ensured through data judgment, the accuracy is higher and more stable, management and control can be more effectively carried out, and the method is suitable for batch application.

Description

Technical Field

[0001] The utility model relates to testing equipment for electric tools, in particular to a vibration testing machine for electric tools. Background Art

[0002] There are many electric tools on the market, such as polishers, grinders, sanders, electric drills, electric shovels, etc. Although these electric tools have different functions, their principles are mostly similar. They generally have a body and a head. The body has a drive motor. The output shaft of the drive motor transmits power to the working component of the head through the transmission component, causing the working component to produce rotation or reciprocating impact and other movements to achieve related functions. When the electric tool is powered on and started, due to the movement of the internal transmission component and the drive motor, corresponding vibrations will be generated and transmitted to the entire body. When the vibration generated is too large, it is easy to affect the service life of the electric tool, making the internal parts easy to damage, and the user's hand feel is also poor when holding it. For this reason, the vibration of the electric tool needs to be tested before the electric tool leaves the factory to determine whether the vibration of the electric tool meets the standard.

[0003] The existing method of judging vibration defects of electric tools is to detect whether the worker holds or touches the electric tool, and then detect the worker's body sense to sense the vibration of the electric tool after starting the electric tool, so as to judge whether the vibration of the electric tool is qualified.

[0004] However, judging the vibration defects of power tools through human body sensing is not suitable for mass production because each person has different senses and judges the vibration intensity differently. This makes it difficult to unify the judgment standards and easily leads to different judgment results. It has low accuracy, poor stability, and cannot be effectively controlled. Utility Model Content

[0005] Based on the above-mentioned problems of low accuracy, poor stability and inability to perform effective control through human body sensing, the utility model provides a vibration tester for electric tools.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a vibration testing machine for an electric tool, comprising a body, on which is provided a control unit and a fixing tool for clamping the electric tool to be tested, on which is provided a vibration sensor for sensing vibration, the fixing tool comprising a tool fixing seat and a locking piece, the locking piece being detachably fixed to the tool fixing seat, and a clamping opening for clamping the electric tool to be tested being formed between the locking piece and the tool fixing seat, the tool fixing seat being connected to the body via a vibration barrier to isolate the vibration transmission between the tool fixing seat and the body, the control unit being connected to the vibration sensor, and receiving the signal detected and output by the vibration sensor.

[0007] A further preferred technical solution of the utility model is: a lower clamping groove for placing the electric tool to be tested is provided on the top of the tool fixing seat, the electric tool to be tested is placed in the lower clamping groove for positioning, the locking piece is located above the tool fixing seat and is detachably connected to the tool fixing seat, the locking piece is pressed on the electric tool to be tested in the lower clamping groove, the locking piece is provided with an upper clamping groove for placing the electric tool to be tested, the upper clamping groove and the lower clamping groove below are combined to form the clamping opening.

[0008] A further preferred technical solution of the utility model is: screws are provided on both sides of the lower clamping groove on the tooling fixing seat, and mounting holes corresponding to the two screws are provided on both sides of the upper clamping groove on the locking piece, and the screws pass through the mounting holes and are connected with nuts to detachably fix the locking piece to the tooling fixing seat.

[0009] A further preferred technical solution of the utility model is: the control unit includes a control module and a display module, the signal output end of the vibration sensor is connected to the signal input end of the control module, and the signal output end of the control module is connected to the signal input end of the display module.

[0010] A further preferred technical solution of the utility model is: the machine body includes a base plate, the control unit includes a control cabinet, the control cabinet is fixed to the base plate, the tooling fixing seat is connected to the base plate through a vibration barrier, and the control module and the display module are installed on the control cabinet.

[0011] A further preferred technical solution of the utility model is: the tooling fixing seat includes a support plate and a boss fixed on the top of the support plate, the lower clamping groove is opened on the boss, the support plate is connected to the machine body through a vibration barrier, and two screws are arranged on the top of the boss at positions on both sides of the lower clamping groove.

[0012] A further preferred technical solution of the utility model is: the vibration barrier is a rubber vibration damping column, the rubber vibration damping column is supported between the machine body and the tooling fixing seat, and the two ends of the rubber vibration damping column are respectively connected to the machine body and the tooling fixing seat.

[0013] A further preferred technical solution of the utility model is: the tooling fixing seat is located above the machine body, the upper and lower ends of the rubber vibration damping column are respectively fixed with an upper plug-in part and a lower plug-in part, the tooling fixing seat is provided with an upper plug-in hole corresponding to the upper plug-in part, the machine body is provided with a lower plug-in hole corresponding to the lower plug-in part, and the upper plug-in part and the lower plug-in part are respectively plugged with the upper plug-in hole and the lower plug-in hole.

[0014] A further preferred technical solution of the utility model is: a fixing foot for supporting the bottom plate is provided at the bottom of the bottom plate.

[0015] A further preferred technical solution of the utility model is: the vibration sensor is arranged on a tooling fixing seat.

[0016] Compared with the prior art, the advantage of the utility model is that during inspection, the electric tool to be tested is clamped on the fixed tooling, and the electric tool is started. When the electric tool is started, the fixed tooling, the electric tool and the vibration sensor vibrate together, so that the vibration sensor can detect the vibration of the electric tool and feed back an electrical signal to the control unit. By analyzing the data received by the control unit, it is judged whether the vibration condition of the electric tool when it is started is qualified. The vibration sensor is used to sense and collect the vibration intensity of the electric tool when it is started, and data is used to judge to ensure consistency. It has higher accuracy and is more stable. It can be managed and controlled more effectively and is suitable for batch application. In addition, the tooling fixing seat is connected to the machine body through a vibration barrier to isolate the vibration transmission between the tooling fixing seat and the machine body, so that the vibration of the fixed tooling will not be transmitted to the machine body and the control unit during inspection, keeping the machine body and the control unit stable and without vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a diagram of the use status of the electric tool when it is clamped in the clamping port;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model when the electric tool is not clamped in the clamping opening;

[0020] Figure 3 This is a disassembled diagram of the locking piece and the tooling fixing seat;

[0021] Figure 4 , base plate, vibration barriers and mounting fixtures.

[0022] In the figure: 1. Base plate; 2. Fixed foot; 3. Fixing seat; 4. Vibration barrier; 5. Vibration sensor; 6. Locking piece; 7. Power tool; 8. Control cabinet; 9. Display module; 10. Clamping port; 11. Support plate; 12. Boss; 13. Lower clamping groove; 14. Screw; 15. Upper clamping groove; 16. Nut; 17. Mounting hole; 18. Lower plug-in hole; 19. Rubber vibration damping column; 20. Lower plug-in part; 21. Upper plug-in part; 22. Upper plug-in hole. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0025] Figure 1-Figure 4 As shown, the vibration testing machine for electric tools includes a body, on which a control unit and a fixed fixture are provided. The fixed fixture is used to clamp the electric tool 7 to be tested, and a vibration sensor 5 for sensing vibration is provided on the fixed fixture. The control unit is connected to the vibration sensor 5 and receives the signal detected and output by the vibration sensor 5.

[0026] Figure 1-Figure 3 As shown, the fixing tool includes a tool fixing seat 3 and a locking piece 6. The locking piece 6 is detachably fixed to the tool fixing seat 3, and a clamping opening 10 for clamping the electric tool 7 to be tested is formed between the locking piece 6 and the tool fixing seat 3. The electric tool 7 to be tested is clamped in the clamping opening 10 for inspection.

[0027] Preferably, the locking piece 6 is located above the tooling fixing seat 3 and is detachably connected to the tooling fixing seat 3. The top of the tooling fixing seat 3 is provided with a lower clamping groove 13 for placing the power tool 7 to be tested, and the locking piece 6 is provided with an upper clamping groove 15 for placing the power tool 7 to be tested. The upper clamping groove 15 is combined with the lower clamping groove 13 below to form a clamping port 10.

[0028] Preferably, screws 14 are provided on both sides of the lower clamping groove 13 on the tooling fixing seat 3, and the screws 14 stand vertically upward. Mounting holes 17 corresponding to the two screws 14 are provided on both sides of the upper clamping groove 15 on the locking member 6. The screws 14 pass through the mounting holes 17 and are connected with nuts 16 to removably fix the locking member 6 on the tooling fixing seat 3.

[0029] When clamping the electric tool 7 to be tested, unscrew the nut 16 from the screw 14 so that the locking piece 6 can be moved away from the top of the tooling fixing seat 3, and position the electric tool 7 to be tested in the lower clamping groove 13. Then, press the locking piece 6 on the top of the tooling fixing seat 3, so that the screws 14 on both sides pass through the mounting holes 17 on both sides of the locking piece 6, screw the nut 16 into the screw 14, and the nut 16 presses the locking piece 6 down so that the locking piece 6 is pressed on the electric tool 7 to be tested in the lower clamping groove 13. The locking piece 6 presses the electric tool 7 to be tested tightly on the tooling fixing seat 3 and fixes it.

[0030] Preferably, the upper clamping groove 15 and the lower clamping groove 13 can be opened according to the shape of the electric tool 7 so that the upper clamping groove 15 and the lower clamping groove 13 are adapted to the shape of the electric tool 7 .

[0031] Figure 1 As shown, during inspection, the electric tool 7 to be tested is clamped on the fixed tooling, and the electric tool 7 is started. When the electric tool 7 is started, the fixed tooling, the electric tool 7 and the vibration sensor 5 vibrate together, so that the vibration sensor 5 can detect the vibration of the electric tool 7, and feed back an electrical signal to the control unit. By analyzing the data received by the control unit, it is determined whether the vibration condition of the electric tool 7 when it is started is qualified. The vibration sensor 5 is used to sense and collect the vibration intensity of the electric tool 7 when it is started, and the judgment is made by data to ensure consistency, and the accuracy is higher, more stable, and more effective management and control, which is suitable for batch application.

[0032] Preferably, the control unit includes a control module and a display module 9, the signal output end of the vibration sensor 5 is connected to the signal input end of the control module, and the signal output end of the control module is connected to the signal input and output end of the display module 9. Preferably, the control module can be a single chip microcomputer or a PLC controller, and the display module 9 is a display screen.

[0033] During the inspection, the vibration sensor 5 senses the vibration intensity and feeds back a signal to the control module, which converts the signal into data and displays it through the display module 9, and determines whether the inspected power tool 7 is qualified through the set appropriate data line.

[0034] For example, a comparison value is set in the control module. When the data formed by the feedback signal of the vibration sensor 5 is less than the comparison value, the tested electric tool 7 is judged to be qualified. When the data formed by the feedback signal of the vibration sensor 5 is equal to or greater than the comparison value, the tested electric tool 7 is judged to be unqualified.

[0035] Preferably, the vibration sensor 5 is an existing conventional sensing element, such as a vibration sensor 5 of the brand Murai and model GBD20.

[0036] Preferably, the machine body includes a base plate 1 , the control unit includes a control cabinet 8 , the control cabinet 8 is fixed on the base plate 1 , and the control module and the display module 9 are installed on the control cabinet 8 .

[0037] Preferably, a fixing foot 2 for supporting the base plate 1 is provided at the bottom of the base plate 1 .

[0038] Figure 2 , Figure 4 As shown, the tool fixing base 3 is connected to the machine body through a vibration barrier 4 to isolate the vibration transmission between the tool fixing base 3 and the machine body, so that the vibration of the fixed tool will not be transmitted to the machine body and the control unit during inspection, keeping the machine body and the control unit stable and free from vibration.

[0039] The fixing tool is arranged above the bottom plate 1 , and the tool fixing seat 3 is connected to the bottom plate 1 through a vibration barrier 4 .

[0040] Preferably, the tooling fixing seat 3 includes a support plate 11 and a boss 12 fixed on the top of the support plate 11, a lower clamping groove 13 is opened on the boss 12, the support plate 11 is connected to the machine body through a vibration barrier 4, and the two screws 14 are arranged on the top of the boss 12 at both sides of the lower clamping groove 13.

[0041] Preferably, the vibration barrier 4 is a rubber vibration-damping column 19 , which is supported between the machine body and the tooling fixing seat 3 , and two ends of the rubber vibration-damping column 19 are respectively connected to the machine body and the tooling fixing seat 3 .

[0042] Preferably, the tool fixing seat 3 is located above the machine body, and the upper and lower ends of the rubber vibration-damping column 19 are respectively fixed with an upper plug-in portion 21 and a lower plug-in portion 20, the tool fixing seat 3 is provided with an upper plug-in hole 21 corresponding to the upper plug-in portion 21, and the machine body is provided with a lower plug-in hole 18 corresponding to the lower plug-in portion 20, and the upper plug-in portion 21 and the lower plug-in portion 20 are respectively plugged with the upper plug-in hole 21 and the lower plug-in hole 18, so as to connect the fixed tool to the machine body. The upper plug-in hole 21 is provided on the support plate 11, and the lower plug-in hole 18 is provided on the bottom plate 1.

[0043] Preferably, rubber vibration-damping columns 19 are provided at the four corners of the support plate 11 and connected to the bottom plate 1 . The rubber vibration-damping columns 19 absorb the vibration on the fixed tooling during inspection to reduce the vibration transmitted to the bottom plate 1 .

[0044] The plug-in part can be inserted into the plug-in hole and fixed by gluing; or the plug-in part can be inserted into the plug-in hole and have an interference fit with the plug-in hole.

[0045] Preferably, the vibration sensor 5 is arranged on the tooling fixing seat 3 .

[0046] The vibration tester for electric tools provided by the utility model is introduced above. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A vibration tester for electric tools, characterized in that: The invention comprises a machine body, on which a control unit and a fixing fixture for clamping the electric tool to be tested are provided, on which a vibration sensor for sensing vibration is provided, and the fixing fixture comprises a fixture fixing seat and a locking piece, wherein the locking piece is detachably fixed to the fixture fixing seat, and a clamping opening for clamping the electric tool to be tested is formed between the locking piece and the fixture fixing seat, the fixture fixing seat is connected to the machine body through a vibration barrier to isolate the vibration transmission between the fixture fixing seat and the machine body, and the control unit is connected to the vibration sensor and receives the signal detected and output by the vibration sensor.

2. The vibration tester for electric tools according to claim 1, characterized in that: A lower clamping groove for placing the electric tool to be tested is provided on the top of the tool fixing seat. The electric tool to be tested is placed in the lower clamping groove for positioning. The locking piece is located above the tool fixing seat and is detachably connected to the tool fixing seat. The locking piece is pressed on the electric tool to be tested in the lower clamping groove. The locking piece is provided with an upper clamping groove for accommodating the electric tool to be tested. The upper clamping groove and the lower clamping groove below are combined to form the clamping opening.

3. The vibration tester for electric tools according to claim 2, characterized in that: The tool fixing seat is provided with screws on both sides of the lower clamping groove, and the locking piece is provided with mounting holes corresponding to the two screws on both sides of the upper clamping groove. The screws pass through the mounting holes and are connected with nuts to detachably fix the locking piece to the tool fixing seat.

4. The vibration tester for electric tools according to claim 1, characterized in that: The control unit comprises a control module and a display module. The signal output end of the vibration sensor is connected to the signal input end of the control module, and the signal output end of the control module is connected to the signal input end of the display module.

5. The vibration tester for electric tools according to claim 4, characterized in that: The machine body comprises a bottom plate, the control unit comprises a control cabinet, the control cabinet is fixed on the bottom plate, the tooling fixing seat is connected to the bottom plate through a vibration barrier, and the control module and the display module are installed on the control cabinet.

6. The vibration tester for electric tools according to claim 3, characterized in that: The tool fixing seat includes a support plate and a boss fixed on the top of the support plate, the lower clamping groove is opened on the boss, the support plate is connected to the machine body through a vibration barrier, and two screws are arranged on the top of the boss at positions on both sides of the lower clamping groove.

7. The vibration tester for electric tools according to claim 1, 5 or 6, characterized in that: The vibration barrier is a rubber vibration-damping column, which is supported between the machine body and the tooling fixing seat, and two ends of the rubber vibration-damping column are respectively connected to the machine body and the tooling fixing seat.

8. The vibration tester for electric tools according to claim 7, characterized in that: The tooling fixing seat is located above the machine body, and the upper and lower ends of the rubber vibration damping column are respectively fixed with an upper plug-in part and a lower plug-in part. The tooling fixing seat is provided with an upper plug-in hole corresponding to the upper plug-in part, and the machine body is provided with a lower plug-in hole corresponding to the lower plug-in part. The upper plug-in part and the lower plug-in part are respectively plugged with the upper plug-in hole and the lower plug-in hole.

9. The vibration tester for electric tools according to claim 5, characterized in that: The bottom of the base plate is provided with fixed feet for supporting the base plate.

10. The vibration tester for electric tools according to claim 1, characterized in that: The vibration sensor is arranged on a tooling fixing seat.

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