Nut locking device
By designing an automated nut locking device, the problem of low efficiency in the assembly process of the angle grinder power mechanism was solved, realizing the automated installation of bevel gears and nuts, improving assembly efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CHERVON IND
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-24
AI Technical Summary
In the existing technology, the power mechanism of the angle grinder requires manual operation during assembly, which leads to low efficiency and increased labor costs.
An automated nut locking device was designed, including a gearbox positioning device, a bevel gear mounting device, a nut mounting device, and a locking device. The device automatically installs the bevel gear and nut into the gearbox and assembles the rotor assembly, bevel gear, and nut into a whole.
It improved assembly efficiency, reduced production costs, and enabled automated installation of bevel gears and nuts, thereby increasing work efficiency.
Smart Images
Figure CN224543734U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of manufacturing and assembly, and more specifically to a nut locking device for assembling a power mechanism of an angle grinder. Background Technology
[0002] Angle grinders, as multi-functional power tools, can perform cutting, grinding, and polishing operations by assembling different attachments on their output shaft. In related technologies, the assembly of the angle grinder's motor mechanism requires locking a nut onto the rotor assembly. This assembly process typically involves manually placing the bevel gear into the gearbox's mounting slot, then passing the motor's rotor assembly through the bearings and bevel gear in the gearbox, screwing the nut onto the threaded end of the rotor shaft, and finally tightening the nut to the specified torque range using a torque wrench. These procedures are time-consuming and labor-intensive for new employees, increasing labor costs and reducing production efficiency for businesses.
[0003] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content
[0004] One object of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one object of this application is to provide an automated nut locking device that offers high assembly efficiency and low cost.
[0005] To achieve the above objectives, this application adopts the following technical solution: A nut locking device is used for assembling the power mechanism of an angle grinder. The power mechanism includes a rotor assembly, a gearbox, a bevel gear, and a nut. The nut locking device includes: a gearbox positioning device, including a gearbox positioning component for positioning the gearbox; a bevel gear mounting device, including a bevel gear feeding component and a bevel gear pushing component; a nut mounting device, including a nut feeding component and a nut pushing component; and a locking device, including a rotor positioning component for positioning the rotor and a rotor driving component, wherein the rotor driving component is configured to drive the rotor positioning component to rotate about a rotation axis; wherein the bevel gear pushing component includes a bevel gear pushing member for pushing the bevel gear into the gearbox, and the nut pushing component includes a first nut pushing member for pushing the nut into the gearbox.
[0006] In some embodiments, the nut locking device further includes a bevel gear positioning device for positioning the bevel gear that has been moved into the gearbox.
[0007] In some embodiments, the bevel gear positioning device is disposed on the underside of the gearbox positioning assembly.
[0008] In some embodiments, the bevel gear positioning device includes a positioning pin that is movable in the vertical direction and passes through a gearbox.
[0009] In some embodiments, the bevel gear positioning device includes a first positioning drive component that drives the positioning pin to move up and down relative to the gearbox positioning assembly, and a second positioning drive component that drives the positioning pin to move back and forth relative to the gearbox positioning assembly.
[0010] In some embodiments, the gearbox positioning assembly includes a first positioning seat with a gearbox loading station and a clamping member disposed on the upper side of the first positioning seat, the clamping member being configured to move in the vertical direction.
[0011] In some embodiments, the gearbox positioning device includes a displacement component that drives the gearbox positioning assembly to move in the front-back direction to a position corresponding to the bevel gear mounting device.
[0012] In some embodiments, the nut pushing assembly includes a second nut pushing member that pushes a nut conveyed from the nut feeding assembly to the first nut pushing member.
[0013] In some embodiments, the first nut pusher and the second nut pusher are respectively disposed on both sides of the gearbox positioning assembly.
[0014] In some embodiments, the first nut pushing assembly includes a retaining portion that holds the nut within the gearbox when the rotor drive assembly drives the rotor positioning assembly.
[0015] The advantages of this application are that the nut locking device can automatically install the bevel gear and nut into the gearbox, and then automatically assemble the rotor assembly, bevel gear, screw and gearbox into a whole, which improves work efficiency and reduces production costs. Attached Figure Description
[0016] Figure 1 This is a plan view of an angle grinder according to an embodiment of this application; Figure 2 yes Figure 1 A 3D view of the overall equipment; Figure 3 yes Figure 2 Exploded view of the structure shown; Figure 4 This is a perspective view of a nut locking device according to an embodiment of this application; Figure 5 yes Figure 4 A 3D view of the nut locking device with part of the frame removed; Figure 6 yes Figure 5 A perspective view of the gearbox positioning device in the image; Figure 7 yes Figure 6 A perspective view of the gearbox positioning device from another angle; Figure 8 yes Figure 5A perspective view of the bevel gear positioning device and the first nut pusher in the middle; Figure 9 yes Figure 8 A three-dimensional view of the structure shown from another perspective; Figure 10 yes Figure 5 A perspective view of the nut mounting device in the diagram; Figure 11 yes Figure 5 A perspective view of the first nut pusher, the first positioning seat, and the second nut pusher in the middle; Figure 12 yes Figure 5 A three-dimensional view of the locking device. Detailed Implementation
[0017] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.
[0018] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0019] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.
[0020] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.
[0021] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values that do not use relative terms should also be disclosed as specific values with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.
[0022] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.
[0023] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.
[0024] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. When using the unit "controller," "processor," "central processing unit," "CPU," or "MCU" to perform a specific function, unless otherwise stated, these functions may be performed by a single or multiple of the aforementioned units.
[0025] In this application, the terms "device," "module," or "unit" are used to describe devices that can be implemented in hardware or software to perform a specific function.
[0026] In this application, the terms “calculation,” “judgment,” “control,” “determine,” “identify,” etc., refer to the operation and process of a computer system or similar electronic computing device (e.g., controller, processor, etc.).
[0027] like Figure 1 The angle grinder 100 shown is a multi-functional power tool. Depending on the attachments installed, it can perform various tasks such as cutting, grinding, and polishing. Given its wide range of applications, the angle grinder 100 enjoys continuously growing market demand in both industrial and civilian sectors. Figures 1 to 3 As shown, the angle grinder 100 typically includes: a housing 101, a power supply unit, an output shaft 102, and a power mechanism disposed between the power supply unit and the output shaft 102. The power mechanism, as the core component of the angle grinder 100, typically includes: a motor, a gearbox assembly, and a transmission assembly. The motor includes a stator assembly and a rotor assembly 104. The rotor assembly 104 includes a rotor shaft 105 that rotates about a rotation axis 100a. The gearbox assembly includes a gearbox 106 for mounting the transmission assembly. The transmission assembly includes a bevel gear 107 mounted to the rotor shaft 105 and an output bevel gear mounted to the output shaft 102. The bevel gear 107 and the output bevel gear mesh with each other to achieve power transmission between the rotor shaft 105 and the output shaft 102. The rotor assembly 104, the gearbox 106, and the bevel gear 107 are locked into a single assembly 103 by a nut 108, thus providing stable support for the rotor assembly 104 and the bevel gear 107 by the gearbox 106.
[0028] For ease of description of the embodiments of this application, the following are also defined: Figure 3 and Figure 4 The directions shown are up, down, left, right, front, and back.
[0029] Figure 4 A nut locking device 200 according to one embodiment of this application is used to assemble the rotor assembly 104, gearbox 106, bevel gear 107, and nut 108 into an assembly unit 103. For example... Figure 4 and Figure 5 As shown, the nut locking device 200 includes: a frame 300, a gearbox positioning device 400, a bevel gear mounting device 500, a nut mounting device 600, and a locking device 700. The frame 300 supports the gearbox positioning device 400, the bevel gear mounting device 500, the nut mounting device 600, and the locking device 700.
[0030] Specifically, the frame 300 includes a support body 31, a support platform 32, and a protective cover 33. The support body 31 is used to mount the support platform 32 and the protective cover 33. The support platform 32 supports the gearbox positioning device 400, the bevel gear mounting device 500, the nut mounting device 600, and the locking device 700. Therefore, the support platform 32 and the support body 31 have high strength and can be constructed using high-precision aluminum alloy profiles. The protective cover 33 is located on the upper side of the support platform 32 to enclose the devices located on the upper side of the support platform 32, preventing damage to the devices and protecting workers in the manufacturing workshop from machine injuries. The protective cover 33 may include protective railings, such as… Figure 4 As shown, a control device 34 may also be provided on the protective cover 33. The control device 34 may include a display screen 341 and an operating component 342. The display screen 341 is used to display information status during the assembly process of the nut 108 assembly equipment, and the operating component 342 is used by the user to monitor, debug, etc., the nut 108 assembly equipment. The operating component 342 may include multiple operating buttons.
[0031] like Figures 5 to 7 As shown, the gearbox positioning device 400 includes a gearbox positioning assembly 41 for positioning the gearbox 106. The gearbox positioning assembly 41 includes a first positioning seat 411 and a clamping member 412. The first positioning seat 411 provides a gearbox loading station 411a, where the worker places the gearbox 106 before the nut locking device 200 is operated. The first positioning seat 411 includes a circumferential positioning structure and an upward support structure. The circumferential positioning structure prevents the first positioning seat 411 from moving in a plane parallel to the support plate 32, and the upward support structure positions the gearbox 106 upwards. The clamping member 412 is disposed on the upper side of the first positioning seat 411 and is configured to move in the vertical direction. It is used to clamp the gearbox 106, preventing shaking during subsequent installation of the bevel gear 107, nut 108, and rotor assembly 104.
[0032] Understandably, the gearbox positioning device 400 also includes a clamping mechanism 413 that drives the clamping member 412 to move in the vertical direction. The clamping mechanism 413 can be a servo press, which can provide sufficient clamping force.
[0033] Understandably, the gearbox positioning device 400 also includes a first shifting component 42 for driving the gearbox positioning assembly 41 to move in the front-back direction. The first shifting component 42 is connected to the gearbox positioning assembly 41 and may include a shifting cylinder 421 and a shifting guide rail 422. The gearbox positioning assembly 41 is mounted on the shifting guide rail 422, and the shifting cylinder 421 drives the gearbox positioning assembly 41 to move back and forth along the shifting guide rail 422. In this application, the first shifting component 42 drives the gearbox positioning assembly 41 to move backward to a position corresponding to the position of the bevel gear mounting device 500. This facilitates the movement of the bevel gear mounting device 500, and at the same time, the gearbox positioning component 41 also frees up the original position of the gearbox loading station 411a, providing a certain amount of movement space for the nut mounting device 600. In this way, the movement process of the bevel gear mounting device 500 and the movement process of the nut mounting device 600 can be at least partially synchronized, thereby shortening the operation time of the nut locking device 200 and improving work efficiency. In addition, by rationally arranging the gearbox positioning device 400, the bevel gear mounting device 500, and the nut mounting device 600, the size of the nut locking device 200 is reduced.
[0034] Understandably, the gearbox positioning device 400 may also include a first detection component 43 for detecting whether a gearbox 106 is already installed on the first positioning seat 411. The nut locking device 200 is only allowed to operate when the first detection component 43 detects that a gearbox 106 is present on the first positioning seat 411; otherwise, the nut locking device 200 is prevented from operating when the first detection component 43 does not detect a gearbox 106. Specifically, the first detection component 43 may include a detection sensor, such as a laser sensor, magnetic sensor, or vision sensor, etc., which is not limited here. The control device 34 is electrically or signal-connected to the first detection component 43. The first detection component 43 sends the detection result to the control device 34, and the control device 34 controls whether the nut locking device 200 is started based on the detection result. The installation of the first detection component 43 ensures the personal safety of workers.
[0035] like Figure 5 , Figures 7 to 9As shown, the bevel gear mounting device 500 includes a bevel gear feeding assembly 51 and a bevel gear pushing assembly 52. The bevel gear feeding assembly 51 provides a plurality of bevel gears 107. The bevel gear feeding assembly 51 includes a bevel gear feeding guide rail 511, on which the plurality of bevel gears 107 are arranged sequentially in a vertical direction. The bevel gear feeding assembly 51 also includes a first drop groove 51 located at the lower end of the bevel gear feeding guide rail 511, into which the bevel gears 107 can move vertically. The bevel gear pushing assembly 52 includes a first pushing groove 521 communicating with the first drop groove 51 and a bevel gear pushing member 522 disposed within the first pushing groove 521. The first pushing groove 521 extends horizontally, and the end of the bevel gear pushing member 522 is further provided with a connecting structure for connecting the bevel gears 107; this connecting structure can be a magnetic structure. After the bevel gear 107 moves from the bevel gear loading guide rail 511 to the drop groove, it then falls into the first pushing groove 521 and is attracted by the magnetic structure. The bevel gear pushing member 522 then pushes the bevel gear 107 along the first pushing groove 521 in a left-right direction into the gearbox 106. As mentioned earlier, the gearbox positioning assembly 41, driven by the first shifting assembly 42, can move to a position corresponding to the bevel gear mounting device 500, specifically, to a position aligned with the first pushing groove 521. Thus, the bevel gear 107 can be pushed into the gearbox 106 by the bevel gear pushing member 522. In this application, for ease of explanation, the position of the gearbox positioning assembly 41 aligned with the bevel gear mounting device 500 is defined as the positioning station 53 (e.g., Figure 11 The first positioning seat 411' shown is located at the position of the positioning station 53, which is the position after the gearbox positioning assembly 41 has moved backward a certain distance.
[0036] A mounting groove is provided inside the gearbox 106, extending along the rotation axis 100a. At this time, the bevel gear 107, attracted by the bevel gear pusher 522, cannot enter the mounting groove. The nut locking device 200 of this application also includes a bevel gear positioning device 800, which positions the bevel gear 107 within the gearbox 106. Specifically, the bevel gear positioning device 800 is located below the gearbox positioning assembly 41. When the gearbox positioning assembly 41 moves to the positioning station 53, and the bevel gear mounting device 500 delivers the bevel gear 107 into the gearbox 106, the bevel gear positioning device 800 moves to a position connected to the bevel gear 107. At this point, the bevel gear pusher 522 can reset, and then the bevel gear 107 disengages from the magnetic attraction structure of the bevel gear pusher 522 and connects to the bevel gear positioning device 800. In this embodiment, the bevel gear positioning device 800 includes a positioning pin 81, which is located directly below the positioning station 53 and can move vertically. When the gearbox 106 is located at the positioning station 53 and the bevel gear 107 is located in the gearbox 106, the positioning pin 81 moves vertically to pass through the mounting groove and insert into the wheel hole of the bevel gear 107. Then, as the bevel gear pusher 522 is reset, the bevel gear 107 disengages from the bevel gear pusher 522 and falls downward along the positioning pin 81 into the mounting groove under the action of gravity. It can be understood that in this embodiment, the bevel gear positioning device 800 includes a first positioning drive assembly 82 that drives the positioning pin 81 to move vertically relative to the gearbox positioning assembly 41. The first positioning drive assembly 82 may include a compression cylinder, which drives the positioning pin 81 to insert upward into the wheel hole of the bevel gear 107, or drives the positioning pin 81 to move downward to disengage from the wheel hole of the bevel gear 107.
[0037] like Figure 5 , Figures 8 to 11As shown, the nut mounting device 600 includes a nut feeding assembly 61 and a nut pushing assembly 62. The nut feeding assembly 61 can provide multiple nuts 108, and includes a nut feeding guide rail 611, on which the multiple nuts 108 are arranged sequentially in the vertical direction. In this application, the gearbox 106 and rotor assembly 104 are manually placed one by one at their respective workstations, while multiple nuts 108 and bevel gears 107 are provided and set on their respective feeding guide rails. This enables automatic feeding of nuts 108 and bevel gears 107, improving assembly efficiency and reducing labor costs. The nut feeding assembly 61 also includes a second dropping groove 612 located at the lower end of the nut feeding guide rail 611, into which the nuts 108 can move vertically. The nut pushing assembly 62 includes: a second pushing groove 621 communicating with the second falling groove 612; a second nut pushing member 622 disposed within the second pushing groove 621; and a first nut pushing member 623 that pushes the nut 108 into the gearbox 106. The second pushing groove 621 extends in the left-right direction. The end of the second nut pushing member 622 is also provided with a connecting structure for connecting the nut 108, which can be a second retaining part 622a. In this embodiment, the nut 108 is a hexagonal nut, so the second retaining part 622a matches the shape of the hexagonal nut. After the nut 108 moves from the nut loading guide 611 to the second falling groove 612, it falls into the second retaining part 622a in the second pushing groove 621. Then, the second nut pushing member 622 pushes the nut 108 along the second pushing groove 621 in the left-right direction to the first nut pushing member 623. The first nut pushing member 623 includes a first retaining part 623a, which is used to fix the nut 108. As previously described, the gearbox positioning assembly 41, driven by the first shifting assembly 42, can move to a position corresponding to the gearbox 106 mounting device, and returns to the gearbox loading station 411a after installing the bevel gear 107. During the process of the gearbox positioning assembly 41 moving from the gearbox loading station 411a to the positioning station 53 and back to the gearbox loading station 411a, the second nut pusher 622 pushes the nut 108 to the first nut pusher 623. The first nut pusher 623 and the second nut pusher 622 are respectively located on both sides of the gearbox positioning assembly 41, thus making full use of the arrangement space on the support plate 32. The end of the second nut pusher 622 is provided with a second retaining part 622a, which can fix the nut 108 in the circumferential direction. Before the gearbox 106 is fully installed with the bevel gear 107 and returns to the gearbox loading station 411a, the second nut pusher 622 resets to its original position.
[0038] During the process of the first shifting component 42 driving the gearbox positioning component 41 from the positioning station 53 back to the gearbox loading station 411a, the first positioning drive component 82 returns to the gearbox loading station 411a along with the gearbox positioning component 41. This ensures that the bevel gear 107 is always in the position within the gearbox 106, preventing the bevel gear 107 from wobbling in the mounting slot and disengaging from the rotation axis 100a. In this embodiment, the bevel gear positioning device 800 further includes a second positioning drive component 83 for driving the positioning pin 81 to move the bevel gear 107 in the front-back direction. That is, the second positioning drive component 83 drives the positioning pin 81 to move the bevel gear 107 back to the gearbox loading station 411a along with the gearbox positioning component 41. When the gearbox 106 and bevel gear 107 return to the gearbox loading station 411a, the first positioning drive assembly 82 moves downwards to disengage from the gearbox 106. At this time, the bevel gear 107 falls into the mounting slot. Then, the second positioning drive assembly 83 continues to drive the positioning pin 81 to move backwards relative to the gearbox positioning assembly 41 to leave the gearbox loading station 411a and return to the positioning station 53.
[0039] After the locating pin 81 leaves the gearbox loading station 411a, the first nut pusher 623 pushes the nut 108 into the gearbox 106 and aligns it with the rotation axis 100a. Furthermore, the first nut pusher 623 causes the first retaining part 623a to hold the nut 108 within the gearbox 106 for a preset time to fix the nut 108. In this embodiment, the first retaining part 623a has an arc-shaped structure, thereby ensuring that the nut 108 can be stably and without breakage when subjected to torsional force.
[0040] like Figure 5 and Figure 12As shown, the locking device 700 includes a rotor positioning assembly 71 and a rotor drive assembly 72. The locking device 700 is located below the support platform 32 and within the support body 31. The rotor positioning assembly 71 includes a second positioning seat 711. The worker pre-places the rotor assembly 104 on the second positioning seat 711, which is located below the positioning station 53 and coaxially arranged with it. Specifically, after the rotor assembly 104 is positioned on the second positioning seat 711, the rotor shaft 105 can rotate around the rotation axis 100a. Similarly, the locking device 700 may also include a second detection assembly for detecting whether the rotor assembly 104 is already positioned on the second positioning seat 711. The nut locking device 200 is allowed to operate only when the second detection assembly detects that the rotor assembly 104 is on the second positioning seat 711; otherwise, the operation of the nut locking device 200 is prevented when the second detection assembly does not detect that the rotor assembly 104 is on the second positioning seat 711. Specifically, the second detection component may include a detection sensor, which can be a laser sensor, magnetic sensor, vision sensor, etc., and is not limited thereto. The control device 34 is electrically or signal-connected to the second detection component. The second detection component sends the detection results to the control device 34, and the control device 34 controls whether the nut locking device 200 is activated based on the detection results. The setting of the second detection component can ensure the personal safety of workers.
[0041] The rotor drive assembly 72 is configured to drive the rotor positioning assembly 71 to rotate around the rotation axis 100a. The locking device 700 also includes a second shift assembly 73, which is used to drive the rotor drive assembly 72 to move up and down. When the rotor drive assembly 72 moves upward under the drive of the second shift assembly 73, the rotor shaft 105 of the rotor assembly 104 can be inserted into the gearbox 106, bevel gear 107, and nut 108 along the rotation axis 100a. When the bevel gear 107 and nut 108 are both set in the gearbox 106 and set along the rotation axis 100a, the second shift assembly 73 drives the rotor drive assembly 72 to move upward, the rotor shaft 105 is inserted into the gearbox 106, and then the rotor drive assembly 72 drives the rotor positioning assembly 71 to rotate around the rotation axis 100a to drive the rotor assembly 104 located on the second positioning seat 711 to rotate. When the rotor drive assembly 72 drives the rotor positioning assembly 71, the first holding part 623a stably holds the nut 108 in the gearbox 106 and prevents the nut 108 from rotating. At this time, the rotor shaft 105 of the rotor assembly 104 rotates in the nut 108 and moves upward. Finally, the nut 108 locks the gearbox 106 and the bevel gear 107 onto the rotor shaft 105.
[0042] In this embodiment, the support platform 32 is also provided with a clearance opening 321, which allows the rotor positioning assembly 71 to drive the rotor assembly 104 to move in the vertical direction to the upper side of the support platform 32.
[0043] Understandably, the nut locking device 200 also includes a third detection component for detecting whether the locking state of the nut 108 relative to the rotor assembly 104 meets the requirements. The third detection component may include a displacement sensor and / or a pressure sensor, which can be used to detect the torque of the nut 108. The third detection component is connected to the control device 34, which determines whether the nut 108 is locked properly based on the detection result of the third detection component and displays the result on the display screen 341. Workers then perform corresponding processing based on the qualified status.
[0044] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.
Claims
1. A nut locking device for assembling the power mechanism of an angle grinder, the power mechanism comprising: The rotor assembly, gearbox, bevel gear, and nut are characterized in that the nut locking device comprises: A gearbox positioning device, including a gearbox positioning assembly for positioning the gearbox; A bevel gear mounting device, including a bevel gear feeding assembly and a bevel gear pushing assembly; Nut installation device, including nut feeding assembly and nut pushing assembly; A locking device includes a rotor positioning assembly for positioning a rotor and a rotor driving assembly, wherein the rotor driving assembly is configured to drive the rotor positioning assembly to rotate about a rotation axis. The bevel gear pushing assembly includes a bevel gear pushing member that pushes the bevel gear into the gearbox, and the nut pushing assembly includes a first nut pushing member that pushes the nut into the gearbox.
2. The nut locking device according to claim 1, characterized in that, It also includes a bevel gear positioning device for positioning the bevel gear that is moved into the gearbox.
3. The nut locking device according to claim 2, characterized in that, The bevel gear positioning device is located on the lower side of the gearbox positioning assembly.
4. The nut locking device according to claim 3, characterized in that, The bevel gear positioning device includes a positioning pin that is movable in the vertical direction and passes through the gearbox.
5. The nut locking device according to claim 4, characterized in that, The bevel gear positioning device includes a first positioning drive component that drives the positioning pin to move up and down relative to the gearbox positioning assembly, and a second positioning drive component that drives the positioning pin to move back and forth relative to the gearbox positioning assembly.
6. The nut locking device according to claim 1, characterized in that, The gearbox positioning assembly includes a first positioning seat with a gearbox loading station and a clamping member disposed on the upper side of the first positioning seat. The clamping member is configured to move in the vertical direction.
7. The nut locking device according to claim 1, characterized in that, The gearbox positioning device includes a displacement component that drives the gearbox positioning assembly to move in the front-back direction to a position corresponding to the bevel gear mounting device.
8. The nut locking device according to claim 1, characterized in that, The nut pushing assembly includes a second nut pushing member that pushes the nuts conveyed from the nut feeding assembly to the first nut pushing member.
9. The nut locking device according to claim 8, characterized in that, The first nut pusher and the second nut pusher are respectively disposed on both sides of the gearbox positioning assembly.
10. The nut locking device according to claim 9, characterized in that, The first nut pusher includes a retaining portion that holds the nut within the gearbox when the rotor drive assembly drives the rotor positioning assembly.