A polishing device for motor fan blade processing

Abstract

The application provides a polishing device for motor fan blade processing, which comprises a processing machine tool, a fixing tool, a processing mechanism, a first driving mechanism and a control mechanism. The processing machine tool comprises a rack and a guide slide rail arranged on the rack. The fixing tool is arranged at one end of the guide slide rail and comprises a clamping seat and a positioning block arranged on the clamping seat. A processing hole is formed in the clamping seat. The processing mechanism comprises a punching slide seat, a clamping tool and a polishing rod. The punching slide seat is slidingly connected to the guide slide rail. The clamping tool is fixed to one side of the punching slide seat close to the fixing tool. The clamping tool is used for clamping the polishing rod. The processing hole is used for passing the polishing rod. The first driving mechanism is used for driving the punching slide seat to slide along the guide slide rail. The control mechanism is coupled with the first driving mechanism and is used for controlling the start and stop of the first driving mechanism. The application has the effect of reducing the processing cost of the motor fan blade.

Description

Technical Field

[0001] This application relates to the technical field of machining equipment, and in particular to a grinding device for machining motor fan blades. Background Technology

[0002] Motor fan blades, also known as fan blades or cooling fans, are components installed at the rear end cover of industrial motors. Their main function is to rotate the fan blades by the rotation of the motor's main shaft during operation, achieving axial air intake and radial air exhaust. This directly dissipates heat from the heat dissipation fins on the outer wall of the motor housing, maintaining the motor at a suitable operating temperature and preventing overheating. During motor operation, the fan blades generate airflow and create air pressure, thereby expelling heat from inside the motor and drawing in cool external air to cool the motor, improving its efficiency and extending its lifespan. Motor fan blades typically have holes. When installing cylindrical motor fan blades at the rear end cover of the motor, the motor shaft is inserted into the holes after the fan blades are heated, achieving an interference fit connection. However, some models of motor fan blades have irregularly shaped holes, resembling semicircles with sharp edges.

[0003] refer to Figure 1 and Figure 2 The motor fan blade 1 includes an impeller 11 and blades 12 fixed to one side of the impeller 11, with several blades 12 spaced apart around the axis of the impeller 11. A mating groove 111 is provided at one end of the impeller 11, and a positioning groove 112 is provided on the inner wall of the mating groove 111. An assembly column 13 is integrally formed in the middle of the inner bottom wall of the mating groove 111. The assembly column 13 is specifically cylindrical, and an inner hole 131 is provided at its center, and the inner hole 131 is an irregular hole. Traditional blank molds can only grind the inner hole 131 of the fan blade to a similar circular structure, which cannot achieve precise machining results and does not meet production requirements.

[0004] When grinding internal holes is required, only high-precision machining techniques, such as CNC machine tool machining, can be used. By programming and controlling the tool movement, the precise machining of complex shapes can be achieved to create the required semi-circular angular structure. CNC machining, through programmable tool control, enables precise machining of complex shapes. However, the purchase and maintenance costs of CNC machine tools are typically high, which is a significant financial burden for some small and medium-sized enterprises (SMEs). Therefore, it is not suitable for widespread use within SMEs. Summary of the Invention

[0005] In order to reduce the processing cost of motor fan blades, this application provides a grinding device for processing motor fan blades.

[0006] This application provides a grinding device for machining motor fan blades, which adopts the following technical solution:

[0007] A grinding device for machining motor fan blades, comprising:

[0008] A machine tool, including a frame and guide rails mounted on the frame;

[0009] A fixing fixture is provided at one end of the guide slide rail, and the fixing fixture includes a snap-fit ​​seat and a positioning block provided on the snap-fit ​​seat, and the snap-fit ​​seat is provided with a machining hole;

[0010] The processing mechanism includes a punching slide, a clamping fixture, and a grinding rod. The punching slide is slidably connected to the guide slide rail. The clamping fixture is fixed to the side of the punching slide near the fixed fixture. The clamping fixture is used to clamp the grinding rod. The processing hole is for the grinding rod to pass through.

[0011] A first driving mechanism is used to drive the punching slide block to slide along the guide rail.

[0012] A control mechanism, coupled to the first drive mechanism, is used to control the start and stop of the first drive mechanism.

[0013] By adopting the above technical solution, when machining the inner hole of the motor fan blade, the side end of the motor fan blade with the mating groove is snapped onto the snap-fit ​​seat, and the positioning block on the fixed groove mates with the positioning groove on the mating groove to achieve the positioning and installation of the motor fan blade on the fixed fixture; at this time, the inner hole of the motor fan blade and the machining hole are aligned. The grinding rod is clamped and fixed on the clamping fixture, and the grinding rod is aligned with the machining hole. The control mechanism controls the first drive mechanism to start, causing the first drive mechanism to drive the punching slide to slide towards the machining fixture, thereby driving the grinding rod to pass through the inner hole of the motor fan blade along the machining hole, and grinding the inner hole surface of the motor fan blade to a smooth state, thus completing the grinding.

[0014] Optionally, the cross-sectional shape of the grinding rod is adapted to the shape of the inner hole of the motor fan blade, and the area of ​​the cross-section of the grinding rod is larger than the area enclosed by the inner hole of the motor fan blade to be processed.

[0015] By adopting the above technical solution, when the grinding rod passes through the inner hole of the motor fan blade to be processed along the processing hole, the cross-section of the inner hole of the motor fan blade will be processed to be the same as the cross-section of the grinding rod. The original uneven hole wall of the inner hole of the motor fan blade will bulge outward, and the inner hole surface of the motor fan blade will become smooth in one go under the passage of the grinding rod.

[0016] Optionally, the punching slide is provided with an alignment verification component on the side near the fixed fixture, the alignment verification component including a verification cylinder and a force detector;

[0017] The calibration cylinder is coaxially arranged with the machining hole. The calibration cylinder includes a buffer cylinder section and a calibration cylinder section that are connected to each other, and the calibration cylinder section is located on the side of the buffer cylinder section closer to the clamping fixture.

[0018] The calibration cylinder is through which the grinding rod passes, and the inner circle shape of the calibration cylinder section is adapted to the cross-section of the grinding rod. The force detector is used to monitor the force on the calibration cylinder section, and the force detector is electrically connected to the control mechanism.

[0019] By adopting the above technical solution, when the grinding rod is aligned with the inner hole of the motor fan blade, the grinding rod can smoothly pass through the calibration cylinder 71 and the processing hole under the drive of the punching slide to grind the inner hole of the motor fan blade; when there is a circumferential offset between the grinding rod and the inner hole of the motor fan blade, the grinding rod slides towards the calibration cylinder with the punching slide, and the grinding rod will partially abut against and impact the calibration cylinder, so that the end of the calibration cylinder is subjected to force. After the force detector detects that the end of the calibration cylinder is compressed, it transmits the signal to the control mechanism. The control mechanism controls the first drive mechanism to drive the grinding rod to retract and shuts down the first drive mechanism. The operator can then adjust the installation position of the grinding rod to improve the yield of the motor fan blade during the processing.

[0020] Optionally, the calibration cylinder section and the buffer cylinder section are detachably connected, and the area enclosed by the inner ring of the buffer cylinder section is larger than the area enclosed by the inner ring of the calibration cylinder section.

[0021] By adopting the above technical solution, the calibration cylinder section and the buffer cylinder section are detachably connected. By replacing different calibration cylinder sections, grinding rods of different sizes can be calibrated, thereby improving the applicability of the calibration component. The area enclosed by the inner ring of the calibration cylinder section is smaller than the area enclosed by the inner ring of the buffer cylinder section, so that the inner ring of the buffer cylinder section can accommodate grinding rods with different gears. When using grinding rods of different sizes, only the calibration cylinder section needs to be replaced.

[0022] Optionally, a connecting strip is fixed to one end of the verification cylinder section near the buffer cylinder section, and a slot is provided on the buffer cylinder section for the connecting strip to be inserted.

[0023] The buffer cylinder section is also provided with a reinforcing plug, one end of which passes through the buffer cylinder section and is inserted into the connecting strip.

[0024] By adopting the above technical solution, the connection between the test cylinder section and the buffer cylinder section can be realized by inserting the connecting strip into the slot; a reinforcing plug is added to the buffer cylinder section and inserted into the connecting strip along the buffer cylinder section to enhance the connection stability of the connecting strip in the buffer cylinder section.

[0025] Optionally, the calibration tube section is made of an elastic material.

[0026] By adopting the above technical solution, the calibration cylinder segment is made of elastic material. When the calibration cylinder segment is deformed under pressure, it can return to its initial state, which is conducive to repeated use.

[0027] Optionally, the connecting strip includes a handle and an anti-detachment protrusion fixed to the handle. The anti-detachment protrusion is made of an elastic material, and a receiving groove is provided on the inner side wall of the slot for the anti-detachment protrusion to be accommodated.

[0028] By adopting the above technical solution, when the connecting strip is inserted into the slot, the anti-dislodgement protrusion on the handle is engaged in the receiving groove, which further improves the connection strength between the buffer section and the calibration section.

[0029] Optionally, it also includes a grinding component and a second drive mechanism.

[0030] The grinding assembly includes a movable support, a grinding component, and a driving component. The grinding component is rotatably connected to one side of the movable support, and the driving component is fixed on the movable support. The driving component is used to drive the grinding component to rotate.

[0031] The movable support is slidably disposed on the side of the fixed fixture away from the clamping fixture, and the second driving mechanism is used to drive the movable support to slide in a direction closer to or away from the fixed fixture.

[0032] By adopting the above technical solution, after the grinding rod is inserted, there are burrs on the end face of the assembly column away from the positioning groove in the area near the inner hole. The second drive mechanism drives the moving support to move towards the fixed fixture, so that the grinding part abuts against the end face of the assembly column of the motor fan blade. The drive component drives the grinding part to rotate, grinding the end face of the assembly column to remove burrs and improve the flatness of the motor fan blade surface.

[0033] Optionally, the movable support includes a support body and a rotating shaft rotatably connected to one side of the support body. The grinding component includes a grinding strip and a mounting rod connected to each other. The mounting rod is coaxially connected to the rotating shaft. The driving component is used to drive the rotating shaft to reciprocate, and the rotation axis of the rotating shaft is offset from the axis of the machining hole.

[0034] By adopting the above technical solution, the mounting rod inside the grinding part is coaxially connected to the rotating shaft inside the movable support to realize the rotational connection of the grinding part on the movable support; the driving component indirectly drives the grinding strip to rotate by driving the rotating shaft to reciprocate, thereby realizing the grinding operation. Before the grinding rod is working, the movable support can be moved by the second driving mechanism to make the grinding strip abut against the end face of the assembly column, and the rotation axis of the rotating shaft is misaligned with the axis of the machining hole, so that the grinding strip can rotate to be spaced apart from the grinding rod. When the grinding rod passes through the motor fan blade, it is not easy to collide with the grinding strip; and the grinding strip and the fixed fixture work together to clamp the motor fan, so when the grinding rod passes through the motor fan blade, the motor fan blade is not easy to detach from the fixed fixture.

[0035] Optionally, one end of the rotating shaft passes through the mounting rod, and the mounting rod is also provided with a locking element for locking the rotating shaft.

[0036] By adopting the above technical solution, the rear end of the shaft is inserted into the mounting rod, and the shaft is locked in the insertion slot by the locking component, thus realizing the detachable connection of the mounting rod on the shaft. By unlocking the locking component, different models of grinding parts can be replaced on the shaft to meet different grinding needs.

[0037] In summary, this application includes at least one of the following beneficial effects:

[0038] 1. In this application, the cross-sectional shape of the grinding rod is adapted to the shape of the inner hole of the motor fan blade, and the area of ​​the cross-section of the grinding rod is larger than the area enclosed by the inner hole of the motor fan blade. When the grinding rod passes through the inner hole of the motor fan blade along the processing hole, the cross-section of the inner hole of the motor fan blade will be processed to be the same as the cross-section of the grinding rod. The original uneven hole wall of the inner hole of the motor fan blade protrudes outward, and the inner hole surface of the motor fan blade is processed into a smooth state in one go under the passage of the grinding rod.

[0039] 2. This application includes an alignment verification component. When the position of the grinding rod is offset from the inner hole of the motor fan blade, the sliding grinding rod will partially abut against and impact the verification cylinder, causing pressure on the end of the verification cylinder. After the force detector detects the pressure on the end of the verification cylinder, it transmits a signal to the control mechanism. The control mechanism controls the first drive mechanism to drive the grinding rod to retract and shuts down the first drive mechanism, preventing the grinding rod from performing incorrect processing on the motor fan blade.

[0040] 3. The calibration cylinder in this application includes a detachably connected buffer cylinder section and a calibration cylinder section, and the calibration cylinder section is located on the side of the buffer cylinder section close to the clamping fixture. The area enclosed by the inner ring of the calibration cylinder section is smaller than the area enclosed by the inner ring of the buffer cylinder section. The inner ring of the buffer cylinder section can be used for grinding rods of different gears to pass through. When using grinding rods of different sizes, only the calibration cylinder section needs to be replaced, saving materials. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the motor fan blades;

[0042] Figure 2 This is a schematic diagram of the overall structure of the motor fan blades from another perspective;

[0043] Figure 3 This is a schematic diagram of the overall structure of a grinding device for machining motor fan blades according to Embodiment 1 of this application;

[0044] Figure 4 This is a schematic diagram of the fixed tooling structure of Embodiment 1 of this application;

[0045] Figure 5 This is a schematic diagram of the overall structure of a grinding device for machining motor fan blades according to Embodiment 2 of this application;

[0046] Figure 6 This is a schematic diagram of the alignment verification component structure in Embodiment 2 of this application;

[0047] Figure 7 This is a partial structural schematic diagram of the polishing assembly shown in Embodiment 2 of this application;

[0048] Explanation of reference numerals in the attached drawings: 1. Motor fan blade; 11. Impeller; 111. Mating groove; 112. Positioning groove; 12. Blade; 13. Assembly column; 131. Inner hole; 2. Machine tool; 21. Frame; 22. Guide slide rod; 3. Fixture; 31. Snap-fit ​​seat; 311. Bearing plate; 312. Snap-fit ​​plate; 3121. Machining hole; 32. Positioning block; 4. Machining mechanism; 41. Punching slide; 42. Mounting cylinder; 43. Clamping fixture; 431. Chuck wrench; 432. Claw; 44. Grinding rod; 5. First drive mechanism; 51. Drive 52. Moving lead screw; 6. Servo motor; 7. Control device; 8. Alignment verification component; 9. Verification cylinder; 10. Verification cylinder section; 11. Connecting insert; 12. Anti-detachment protrusion; 13. Buffer cylinder section; 14. Slot; 15. Reinforcing insert; 16. Force detector; 17. Grinding component; 18. Moving support; 19. Support body; 10. Rotating shaft; 11. Grinding component; 12. Mounting rod; 13. Grinding strip; 14. Locking component; 15. Driving component; 16. Second driving mechanism; 17. Linear guide rail; 18. Moving slide. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0050] Example 1:

[0051] Embodiment 1 of this application provides a grinding device for machining motor fan blades.

[0052] refer to Figure 3 and Figure 4 A grinding device for machining motor fan blades includes a machine tool 2, a fixed fixture 3 mounted on the machine tool, a machining mechanism 4, a first drive mechanism 5, and a control mechanism. The machine tool 2 includes a frame 21 and a guide rail mounted on the frame 21. In this embodiment, the guide rail includes two parallel guide rods 22, both ends of which are fixedly connected to the frame 21. The fixed fixture 3 is fixed to one end of the frame 21. The fixed fixture 3 includes a retaining seat 31 and a positioning block 32 fixed to the end face of the retaining seat 31. The retaining seat 31 includes a bearing plate 311 and a retaining plate 312 integrally formed on one side of the bearing plate 311. The positioning block 32 is fixed to the outer wall of the retaining plate 312. Both the retaining plate 312 and the bearing plate 311 are disc-shaped. A machining hole 3121 is coaxially formed on the retaining plate 312, penetrating the frame 21. (Reference) Figure 1 and Figure 4 The outer diameter of the retaining plate 312 is equal to the inner diameter of the mating groove 111 of the motor fan blade 1. The mating groove 111 of the motor fan blade 1 is fitted onto the retaining plate 312, and the positioning block 32 is engaged in the positioning groove 112, with the assembly column 13 located in the machining hole 3121, thus realizing the positioning and installation of the motor fan blade 1 on the fixed fixture 3.

[0053] refer to Figure 3 The processing mechanism 4 includes a punching slide 41, a clamping fixture 43, and a grinding rod 44. Two guide slides 22 pass through the punching slide 41 and are slidably connected to it. In this embodiment, the first driving mechanism 5 is specifically configured as a motor screw mechanism; the motor screw mechanism includes a drive screw 51 and a servo motor 52. The drive screw 51 is arranged parallel to the guide slides 22 and is fixed to the frame 21. The drive screw 51 is located between the two guide slides 22, passes through the punching slide 41, and is threadedly connected to it. The servo motor 52 is fixed to the frame 21, and its output shaft is coaxially fixed with the drive screw 51. Starting the servo motor 52 drives the punching slide 41 to slide along the guide rail. In other embodiments, the first driving mechanism 5 can also be configured as a motor-driven mechanism with gear and chain transmission.

[0054] refer to Figure 3 A control device 6 is also fixed on the frame 21. The control device 6 is specifically configured as a control box, and the control box is electrically connected to the first drive mechanism 5 to control the start and stop of the first drive mechanism 5.

[0055] refer to Figure 1 and Figure 3A mounting cylinder 42 is fixed to the side of the punching slide 41 near the fixed fixture 3. The mounting cylinder 42 is coaxially arranged with the machining hole 3121, and the clamping fixture 43 is fixed inside the mounting cylinder 42. In this embodiment, the clamping fixture 43 is specifically configured as a three-jaw chuck, which includes jaws 432 and a chuck wrench 431. One end of the chuck wrench 431 extends out of the mounting cylinder 42, and one end of the jaws 432 is also located outside the mounting cylinder 42. An adjustment groove is provided on the mounting cylinder 42 for the chuck wrench 431 to move. By turning the chuck wrench 431, the clamping or loosening of the jaws 432 can be controlled. One end of the grinding rod 44 is inserted into the mounting cylinder 42, and the chuck wrench 431 is turned to drive the jaws 432 to clamp the grinding rod 44, thus realizing the installation of the grinding rod 44 at one end of the punching slide 41. The cross-sectional shape of the grinding rod 44 is adapted to the shape of the inner hole 131 of the motor fan blade 1, and the area of ​​the cross-section of the grinding rod 44 is slightly larger than the area enclosed by the inner hole 131 of the motor fan blade 1. Align the grinding rod 44 with the inner hole 131 of the motor fan blade 1, and then start the first drive mechanism 5 to drive the punch slide 41 to slide towards the fixed fixture 3; the grinding rod 44 moves together with the punch slide 41, passes through the inner hole 131 of the motor fan blade 1 along the processing hole 3121, and processes the cross-section of the inner hole 131 of the motor fan blade 1 to be the same as the cross-section of the grinding rod 44. The original uneven hole wall of the inner hole 131 of the motor fan blade 1 protrudes outward, and the surface of the inner hole 131 of the motor fan blade 1 is processed into a smooth state in one go under the passage of the grinding rod 44.

[0056] The implementation principle of the grinding device for processing motor fan blades in this embodiment is as follows: The motor fan blade 1 to be processed is installed on the fixed fixture 3. During installation, the mating groove 111 of the motor fan blade 1 is fitted onto the clamping plate 312, and the positioning block 32 is engaged in the positioning groove 112. The grinding rod 44 is clamped by the three-jaw chuck, and the grinding rod 44 is rotated during the clamping process to align the grinding rod 44 with the inner hole 131 of the motor fan blade 1. Then the control box is started, and the control box controls the first drive mechanism 5 to start. The first drive mechanism 5 drives the punching slide 41 to move. When the grinding rod moves together with the punching slide 41 to the position of the inner hole 131 of the motor fan blade 1 to be processed, the grinding rod 44 will forcibly pass through the inner hole 131 of the motor fan blade 1 to be processed due to the traction force, and the inner hole 131 of the motor fan blade 1 will be processed to be the same as the cross-section of the grinding rod 44, that is, the grinding is completed.

[0057] Example 2:

[0058] Embodiment 2 of this application provides a grinding device for machining motor fan blades.

[0059] refer to Figure 5 and Figure 6 The difference between Embodiment 2 and Embodiment 1 of this application is as follows:

[0060] A alignment verification component 7 is provided on the side of the punching slide 41 near the fixed fixture 3. The alignment verification component 7 includes a verification cylinder 71 and a force detector 73. The verification cylinder 71 is coaxially arranged with the machining hole 3121. The verification cylinder 71 includes a detachably connected verification cylinder section 711 and a buffer cylinder section 712. The verification cylinder section 711 is made of elastic material. In this embodiment, the verification cylinder section 711 is specifically made of rubber.

[0061] refer to Figure 5 A connecting strip 7111 is fixedly connected to the end face of the calibration cylinder section 711 near the buffer cylinder section 712. The connecting strip 7111 includes a handle and an anti-detachment protrusion 7112 fixed to the handle. The anti-detachment protrusion is made of elastic material, and in this embodiment, the anti-detachment protrusion 7112 is made of rubber. In this embodiment, there are two anti-detachment protrusions 7112 arranged opposite each other, and the anti-detachment protrusions 7112 gradually taper away from the handle. In this embodiment, the anti-detachment protrusion 7112 is specifically set in the shape of a triangular plate. A slot 7121 is opened at one end of the buffer cylinder section 712 near the calibration cylinder section 711, and two receiving grooves are opened on the inner side wall of the slot 7121, and the receiving grooves are arranged one-to-one with the anti-detachment protrusions 7112. When the connecting handle is inserted into the slot 7121, the anti-detachment protrusion 7112 on the handle is engaged into the receiving groove, and the connection between the four-wire calibration cylinder section 711 and the buffer cylinder section 712 is then detachable. In this embodiment, two connecting strips 7111 are arranged opposite each other; correspondingly, two slots 7121 are also provided.

[0062] refer to Figure 5 To further enhance the connection strength between the calibration cylinder section 711 and the buffer cylinder section 712, a reinforcing insert 72 is also provided on the buffer cylinder section 712. One end of the reinforcing insert 72 passes through the buffer cylinder section 712 and is inserted into the connecting strip 7111. In this embodiment, the reinforcing insert 72 is specifically configured as a reinforcing pin. In other embodiments, the reinforcing insert 72 can also be configured as a reinforcing bolt, which is threaded into the connecting strip 7111 after passing through the annular groove cylinder section.

[0063] refer to Figure 5 The inner ring shape of the calibration cylinder section 711 is adapted to the cross-section of the grinding rod 44. The inner ring of the buffer cylinder section 712 is circular, and the area enclosed by the inner ring of the buffer cylinder section 712 is larger than the area enclosed by the inner ring of the calibration cylinder section 711. In this embodiment, the force detector 73 is specifically configured as a piezoelectric sensor, and the piezoelectric sensor is fixed on the end face of the calibration cylinder section 711 away from the buffer cylinder section 712, and the piezoelectric sensor is electrically connected to the control box.

[0064] refer to Figure 4 and Figure 5When the grinding rod 44 is aligned with the inner hole 131 of the motor fan blade 1, the grinding rod 44 can smoothly pass through the calibration cylinder 71 and the machining hole 3121 (not shown in the figure) under the drive of the first drive mechanism 5 to grind the inner hole 131 of the motor fan blade 1. When there is a circumferential offset between the grinding rod 44 and the inner hole 131 of the motor fan blade 1 after installation, the grinding rod 44 will partially abut and impact the calibration cylinder 71 when sliding under the drive of the first drive mechanism 5, causing the end face of the calibration cylinder 71 to be pressed. After the piezoelectric sensor detects the pressure on the end face of the calibration cylinder 71, it transmits the signal to the control box. The control box controls the first drive mechanism 5 to drive the grinding rod 44 to retract and shuts down the first drive mechanism 5. The operator readjusts the installation position of the grinding rod 44 to avoid the misaligned grinding rod 44 directly machining the motor fan blade 1 and damaging the motor fan blade 1.

[0065] refer to Figure 5 and Figure 7 A grinding assembly 8 and a second drive mechanism 9 for driving the grinding assembly 8 to slide are provided on the side of the fixed fixture 3 away from the processing mechanism 4. The grinding assembly 8 includes a movable support 81, a grinding element 82, and a drive component 84. The movable support 81 includes a support body 811 and a rotating shaft 812 rotatably connected to the support body 811. The grinding element 82 is connected to the rotating shaft 812. The drive component 84 is specifically configured as a drive motor, which is fixed to the support body 811, and the output shaft of the drive motor is coaxially fixed with the rotating shaft 812. Starting the drive motor drives the grinding element 82 to rotate, thus performing the grinding operation.

[0066] refer to Figure 7 The grinding component 82 includes a mounting rod 821 and a grinding strip 822 fixed to one end of the mounting rod 821. The grinding strip 822 is arc-shaped. One end of the rotating shaft 812 passes through the mounting rod 821. A locking component 83 is provided on the mounting rod 821. The locking component 83 is specifically a locking bolt. One end of the locking bolt passes through the mounting rod 821 and is threaded into the rotating shaft 812, realizing the detachable connection of the grinding component 82 to the rotating shaft 812.

[0067] refer to Figure 5 and Figure 7It is worth noting that the rotation axis of the grinding rod 822 is misaligned with the axis of the machining hole 3121. Before using the grinding rod 44 for machining, the second drive mechanism 9 is activated first; the grinding rod 822 is driven to slide to the assembly column 13 of the motor fan blade 1 and abut against the end face of the assembly column 13 away from the positioning groove 112, so that the grinding rod 822 and the fixed fixture 3 work together to clamp the motor fan, thereby improving the clamping stability of the motor fan blade 1 at the fixed fixture 3. Then the drive motor is activated, driving the grinding rod 822 to rotate to a distance from the inner hole 131 of the motor fan blade 1. When the grinding rod 44 passes through the motor fan blade 1, the grinding rod 44 is less likely to collide with the grinding rod 822. After the grinding rod 44 passes through the inner hole 131 of the motor fan blade 1 under the action of the first drive mechanism 5, a ring of burrs will be generated on the end face of the assembly column 13 near the inner hole 131. Subsequently, the first drive mechanism 5 drives the grinding rod 44 to retract, causing the grinding rod 44 to exit the machining hole 3121. Finally, the drive motor is started, driving the grinding strip 822 to reciprocate on the end face of the assembly column 13, grinding the end face of the assembly column 13 and removing burrs. In specific implementation, different grinding parts 82 can be replaced according to the size of the motor fan blade 1.

[0068] refer to Figure 7 The second drive mechanism 9 is specifically configured as a linear slide module, which includes a linear guide rail 91 and a movable slide 92 slidably mounted on the linear guide rail 91. The linear guide rail 91 is fixedly connected to the frame 21. The support body 811 is fixedly connected to the movable slide 92. Activating the linear slide module will drive the movable support 81 to slide towards or away from the fixed fixture 3.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grinding device for machining motor fan blades, characterized in that, include: The machining tool (2) includes a frame (21) and guide rails mounted on the frame (21); The fixed fixture (3) is located at one end of the guide slide rail, and the fixed fixture (3) includes a snap-fit ​​seat (31) and a positioning block (32) located on the snap-fit ​​seat (31). The snap-fit ​​seat (31) is provided with a machining hole (3121). The processing mechanism (4) includes a punching slide (41), a clamping fixture (43), and a grinding rod (44). The punching slide (41) is slidably connected to the guide slide rail. The clamping fixture (43) is fixed to the side of the punching slide (41) near the fixed fixture (3). The clamping fixture (43) is used to clamp the grinding rod (44). The processing hole (3121) is for the grinding rod (44) to pass through. The first driving mechanism (5) is used to drive the punch slide (41) to slide along the guide rail; A control mechanism, which is coupled to the first drive mechanism (5) and is used to control the start and stop of the first drive mechanism (5); The cross-sectional shape of the grinding rod (44) is adapted to the shape of the inner hole (131) of the motor fan blade (1), and the area of ​​the cross-section of the grinding rod (44) is larger than the area enclosed by the inner hole (131) of the motor fan blade (1) to be processed. The punch slide (41) is provided with an alignment verification component (7) on the side near the fixed fixture (3). The alignment verification component (7) includes a verification cylinder (71) and a force detector (73). The verification cylinder (71) is coaxially arranged with the machining hole (3121). The verification cylinder (71) includes a buffer cylinder section (712) and a verification cylinder section (711) connected to each other, and the verification cylinder section (711) is located on the side of the buffer cylinder section (712) close to the clamping fixture (43). The calibration cylinder (71) is through which the grinding rod (44) passes, and the inner ring shape of the calibration cylinder section (711) is adapted to the cross-section of the grinding rod (44). The force detector (73) is used to monitor the force on the calibration cylinder section (711), and the force detector (73) is electrically connected to the control mechanism. The verification cylinder section (711) and the buffer cylinder section (712) are detachably connected, and the area enclosed by the inner ring of the buffer cylinder section (712) is larger than the area enclosed by the inner ring of the verification cylinder section (711). It also includes a grinding component (8) and a second drive mechanism (9). The grinding assembly (8) includes a movable support (81), a grinding component (82), and a driving component (84). The grinding component (82) is rotatably connected to one side of the movable support (81), and the driving component (84) is fixed on the movable support (81). The driving component (84) is used to drive the grinding component (82) to rotate. The movable support (81) is slidably disposed on the side of the fixed fixture (3) away from the clamping fixture (43), and the second driving mechanism (9) is used to drive the movable support (81) to slide in a direction closer to or away from the fixed fixture (3). The movable support (81) includes a support body (811) and a rotating shaft (812) rotatably connected to one side of the support body (811). The grinding component (82) includes a grinding strip (822) and a mounting rod (821) connected to each other. The mounting rod (821) is coaxially connected to the rotating shaft (812). The driving component (84) is used to drive the rotating shaft (812) to reciprocate, and the rotation axis of the rotating shaft (812) is misaligned with the axis of the machining hole (3121).

2. The grinding device for machining motor fan blades according to claim 1, characterized in that, The end of the verification cylinder section (711) near the buffer cylinder section (712) is fixed with a connecting strip (7111), and the buffer cylinder section (712) is provided with a slot (7121) for the connecting strip (7111) to be inserted. The buffer cylinder section (712) is also provided with a reinforcing plug (72), one end of which passes through the buffer cylinder section (712) and is inserted into the connecting strip (7111).

3. The grinding device for machining motor fan blades according to claim 1, characterized in that, The calibration tube section (711) is made of elastic material.

4. The grinding device for machining motor fan blades according to claim 2, characterized in that, The connecting strip (7111) includes a handle and an anti-detachment protrusion (7112) fixed on the handle. The anti-detachment protrusion (7112) is made of elastic material. The inner wall of the slot (7121) is provided with a receiving groove for the anti-detachment protrusion (7112) to be received.

5. A grinding device for machining motor fan blades according to claim 1, characterized in that, One end of the rotating shaft (812) passes through the mounting rod (821), and the mounting rod (821) is also provided with a locking member (83) for locking the rotating shaft (812).

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