Shaft part polishing device

Abstract

The invention relates to the field of shaft part grinding, in particular to a shaft part grinding device which comprises a box body, a positioning assembly and a grinding assembly, a mounting groove is formed in the upper end of the box body, the positioning assembly and the grinding assembly are both fixedly connected to the groove bottom of the mounting groove, the box body is provided with a containing cavity, the containing cavity is formed below the mounting groove, and the positioning assembly is fixedly connected with the grinding assembly. The box body is provided with a negative pressure opening, and the two ends of the negative pressure opening communicate with the mounting groove and the containing cavity correspondingly. The positioning assembly and the grinding assembly are integrated in the box with the mounting groove, a directional negative pressure airflow channel is constructed in the grinding process through the containing cavity formed below the mounting groove and the negative pressure opening communicating the positioning assembly and the grinding assembly, and splashing grinding chippings can be efficiently sucked into the containing cavity to be treated in a centralized mode; therefore, the problem of environmental pollution caused by flying of the chippings is fundamentally solved, the working condition is remarkably improved, and meanwhile, the adverse effects of the chippings on the operation precision and the service life of equipment are effectively prevented.

Description

Technical Field

[0001] This application relates to the field of grinding shaft parts, and in particular to a grinding apparatus for shaft parts. Background Technology

[0002] As core components in mechanical transmission systems, shaft parts are directly affected by the machining quality of their two ends, which in turn affects the assembly accuracy and operational reliability of the entire machine. In existing production processes, grinding the shaft ends is an indispensable step to eliminate burrs, create assembly chamfers, or prepare center hole positioning datums.

[0003] Currently, the common practice to address this need is to use manual grinding with a handheld angle grinder or a simple benchtop grinder with limited functionality. However, with industrial upgrading and increasingly stringent requirements for production efficiency and consistent quality, automating and intelligentizing the grinding of both ends of shaft parts has become a clear trend in the manufacturing industry.

[0004] Although the concept of automated grinding has been widely accepted, existing technologies still have significant drawbacks in practical applications. During the grinding process, the intense friction and grinding action between the grinding wheel and the metal workpiece inevitably generates a large amount of high-temperature, fine metal debris. Most existing grinding devices are open or semi-closed structures, lacking effective mechanisms for collecting and confining the debris. This causes the grinding debris to fly in all directions under the influence of centrifugal force and high-speed airflow, creating a serious source of pollution. Summary of the Invention

[0005] To reduce debris flying, this application provides a grinding device for shaft parts.

[0006] The grinding device for shaft parts provided in this application adopts the following technical solution: A grinding device for shaft parts includes a housing, a positioning component, and a grinding component. The upper end of the housing is provided with a mounting groove. The positioning component and the grinding component are both fixedly connected to the bottom of the mounting groove. The housing is provided with a receiving cavity located below the mounting groove. The housing is provided with a negative pressure port, the two ends of which are respectively connected to the mounting groove and the receiving cavity.

[0007] By adopting the above technical solution, the positioning component and the grinding component are integrated into a housing with a mounting groove. By utilizing the receiving cavity located below the mounting groove and the negative pressure port connecting the two, a directional negative pressure airflow channel is constructed during the grinding process. This can efficiently draw the flying grinding debris into the receiving cavity for centralized treatment, thereby fundamentally solving the environmental pollution problem caused by flying debris, significantly improving working conditions, and effectively preventing the debris from adversely affecting the operating accuracy and lifespan of the equipment.

[0008] Preferably, it also includes a filter drawer, the filter drawer comprising a frame and a filter screen, the filter screen being fixedly connected to the inner wall of the frame, the outer wall of the housing having an installation opening communicating with a receiving cavity, the inner wall of the receiving cavity being fixedly connected to a baffle, and the frame being slidably connected to the inner wall of the installation opening and the upper end face of the baffle.

[0009] By adopting the above technical solution, the sliding connection structure facilitates quick pulling from the side of the box, and the filter screen can efficiently intercept and collect the debris generated during grinding. The cooperation between the baffle and the frame not only ensures the stability of the installation, but also realizes the initial settling and centralized storage of debris, which greatly facilitates the cleaning and recycling of waste and effectively maintains the long-term smoothness and dust removal efficiency of the negative pressure system.

[0010] Preferably, it further includes a mounting door, a first spring, a connecting rod, and a cam. The mounting door is used to cover the mounting opening and is detachably connected to the outer wall of the housing. The first spring is located between the mounting door and the frame. One end of the first spring is fixedly connected to the end of the mounting door facing the frame, and the other end of the first spring abuts against the frame. The connecting rod is connected to the lower end of the frame. The cam is located on the side of the connecting rod away from the first spring and is rotatably connected to the inner wall of the receiving cavity. The outer wall of the cam abuts against the connecting rod.

[0011] By adopting the above technical solution, when the cam rotates, the cam abuts against the connecting rod and works with the first spring to control the filter drawer to swing back and forth, which facilitates the screening of materials in the filter drawer and reduces the probability of filter screen clogging.

[0012] Preferably, it also includes a second spring, and the inner wall of the receiving cavity facing the mounting opening is provided with a groove for the frame to be inserted. One end of the second spring is fixedly connected to the bottom of the groove, and the other end of the second spring is used to abut against the frame.

[0013] By adopting the above technical solution, the first spring has a tendency to recover its deformation after compression. When the cam does not abut against the connecting rod, the inertia of the filter drawer causes the first spring to extend and the second spring to contract. The second spring has a tendency to recover its deformation, which pushes the filter drawer to move, increases the frequency of the filter drawer's swing, facilitates the sieving of materials in the filter drawer, and reduces the probability of filter screen clogging.

[0014] Preferably, the device also includes an air pump. The outer wall of the housing is provided with an air outlet, which is connected to the inlet of the air pump. The mounting door is provided with a first air inlet, which is connected to the mounting opening. The outer wall of the housing is provided with a second air inlet, which is connected to the recess. The outlet of the air pump is connected to the first air inlet and the second air inlet.

[0015] By adopting the above technical solution, when the air pump is not stopped but the filter drawer is removed, the air outlet, the first air inlet and the second air inlet achieve gas circulation, reduce the falling of debris, and facilitate the cleaning of the installation port and groove, preventing impurities from interfering with the sliding of the filter drawer when it is installed later.

[0016] Preferably, the bottom of the mounting groove is fixedly connected to a first fixing block and a second fixing block. The first fixing block is located in the middle of the mounting groove, and the second fixing block is fixedly connected to the groove wall. The positioning component is connected to the first fixing block, and the grinding component is connected to the second fixing block. The negative pressure port includes a first chip discharge port and a second chip discharge port. The first chip discharge port is located between the first fixing block and the second fixing block, and the second chip discharge port is located on the side of the first fixing block away from the second fixing block. The height of the bottom of the mounting groove increases as it moves away from the first chip discharge port, and the height of the bottom of the mounting groove increases as it moves away from the second chip discharge port.

[0017] By adopting the above technical solution, the combined effect of gravity and negative pressure airflow is utilized to enable the grinding debris to automatically collect at the chip discharge port and be discharged efficiently, fundamentally eliminating the retention and accumulation of debris in the processing area, and significantly improving cleaning efficiency and equipment maintenance convenience.

[0018] Preferably, the mounting groove wall is provided with a first cleaning port and a second cleaning port. The first cleaning port is located on the side of the first chip discharge port away from the positioning component, and the second cleaning port is located on the side of the second chip discharge port away from the positioning component. The openings of the first cleaning port and the second cleaning port are angled downwards. The first cleaning port is used to blow impurities at the bottom of the mounting groove towards the first chip discharge port, and the second cleaning port is used to blow the bottom of the mounting groove towards the second chip discharge port. The housing is provided with a first channel and a second channel. The first channel is connected to the first cleaning port and the mounting port, and the second channel is connected to the second cleaning port and the recess.

[0019] By adopting the above technical solution, and by setting up the first and second downward-sloping cleaning ports, and connecting them to the air source of the mounting port and the groove through the first and second channels respectively, a directional blowing system is constructed. This system can accurately blow debris that is accidentally trapped at the bottom of the mounting groove to the corresponding chip discharge port, complementing the negative pressure suction system, completely eliminating cleaning dead corners, and ensuring that the grinding area can maintain a chip-free state even under complex working conditions.

[0020] Preferably, it further includes a first check valve and a second check valve, wherein the first check valve is fixedly connected to the inner wall of the first channel, and the second check valve is fixedly connected to the inner wall of the second channel.

[0021] By adopting the above technical solution, the airflow direction in the first and second channels is precisely controlled, effectively preventing the backflow of debris or dust under complex airflow conditions. This ensures the reliability of the air blowing function at the cleaning port and avoids the reverse dispersion of pollutants through the cleaning path, thereby significantly improving the stability and cleaning efficiency of the entire dust removal system. At the same time, the intermittent back-and-forth swing of the filter drawer increases the air pressure difference between the groove and the installation port. The increased air pressure causes the first and second cleaning ports to intermittently generate enhanced airflow, impacting impurities and reducing the adhesion of impurities to the bottom of the installation groove.

[0022] Preferably, the axes of the first air inlet and the second air inlet are inclined, with the opening of the first air inlet facing the inner wall of the mounting opening and the opening of the second air inlet facing the groove wall of the groove.

[0023] By adopting the above technical solution, the light dust accumulated on these horizontal surfaces is removed by airflow, which effectively prevents the adhesion and accumulation of debris under the action of gravity, thereby significantly improving the self-cleaning ability and long-term operational stability of the cavity.

[0024] Preferably, the lower end of the frame is provided with a clearance groove for the insertion of a connecting rod. One end of the connecting rod is hinged to the groove wall of the clearance groove, and the hinged end of the connecting rod is located near the mounting opening.

[0025] By adopting the above technical solution, sufficient hinge freedom and space avoidance are provided for the pull-out movement of the filter drawer, so that the connecting rod can automatically retract into the avoidance groove when the drawer is pushed in, and the connecting rod can rotate out to cooperate with the cam when it is in the receiving cavity, thus achieving a perfect unity between moving parts and functional requirements.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The positioning component and the grinding component are integrated into a housing with a mounting slot. By utilizing the receiving cavity located below the mounting slot and the negative pressure port connecting the two, a directional negative pressure airflow channel is constructed during the grinding process. This can efficiently draw the flying grinding debris into the receiving cavity for centralized treatment, thereby fundamentally solving the environmental pollution problem caused by flying debris, significantly improving working conditions, and effectively preventing the debris from adversely affecting the equipment's operating accuracy and lifespan. By setting up the first and second downward-sloping cleaning ports and connecting them to the air source of the mounting port and the groove through the first and second channels respectively, a directional blowing system is constructed. This system can accurately blow the debris that is accidentally trapped at the bottom of the mounting groove to the corresponding chip discharge port. It complements the negative pressure suction system, completely eliminates cleaning dead corners, and ensures that the grinding area can maintain a chip-free state even under complex working conditions. Precise control of the airflow direction within the first and second channels effectively prevents backflow of debris or dust under complex airflow conditions. This ensures the reliability of the air blowing function at the cleaning port and prevents pollutants from escaping backward through the cleaning path, thereby significantly improving the stability and cleaning efficiency of the entire dust removal system. Simultaneously, the intermittent oscillation of the filter drawer increases the air pressure difference between the groove and the installation port. This increased air pressure causes the first and second cleaning ports to intermittently generate enhanced airflow, impacting impurities and reducing their adhesion to the bottom of the installation groove. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a grinding device for shaft-type parts.

[0028] Figure 2 This is a schematic diagram of the internal structure of a grinding device for shaft parts after it has been cut open.

[0029] Figure 3 This is a cross-sectional view of a grinding device for shaft-type parts.

[0030] Figure 4 This is a schematic diagram of the overall structure of the connecting rod and control components.

[0031] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Mounting groove; 111. First guide surface; 112. Second guide surface; 113. First cleaning port; 114. Second cleaning port; 12. First fixing block; 121. Placement groove; 13. Second fixing block; 14. Feed inlet; 15. Discharge port; 16. Receiving cavity; 161. Baffle; 162. Embedded groove; 17. Negative pressure port; 171. First chip discharge port; 172. Second chip discharge port; 18. Mounting port; 19. Rotation port; 110. Assembly port; 120. Air outlet; 130. First air inlet; 140. Second air inlet; 150. First channel; 160. Second channel; 2. Positioning component; 21. Hydraulic cylinder; 22. Support platform; 23. Cover; 24. Chuck; 3. Grinding assembly; 31. Fixed base; 32. Linear motor; 33. Sliding table; 34. Drive motor; 35. Grinding wheel; 4. Conveying assembly; 41. Feed conveyor belt; 42. Discharge conveyor belt; 5. Filtering assembly; 51. Filter drawer; 511. Frame; 5111. Clearance groove; 512. Filter screen; 52. Mounting door; 53. First spring; 54. Second spring; 55. Connecting rod; 56. Control component; 561. Control motor; 562. Rotating column; 563. Cam; 57. Receiving box; 58. Air supply component; 581. Air pump; 582. First pipe body; 583. Second pipe body; 584. Third pipe body; 585. First check valve; 586. Second check valve. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4This application will be described in further detail.

[0033] This application discloses a grinding device for shaft-type parts. (Refer to...) Figure 1 A grinding device for shaft parts includes a housing 1, a positioning component 2, a grinding component 3, a conveying component 4, and a filtering component 5.

[0034] Reference Figure 1 and Figure 2 The upper end of the housing 1 is provided with an installation groove 11. The bottom of the installation groove 11 is fixedly connected with a first fixing block 12 and a second fixing block 13. The first fixing block 12 is located in the middle of the installation groove 11, and the second fixing block 13 is fixedly connected to the groove wall of the installation groove 11. The positioning component 2 is connected to the first fixing block 12, and the grinding component 3 is connected to the second fixing block 13. The two ends of the length direction of the housing 1 are respectively provided with a feed port 14 and a discharge port 15. The feed port 14 and the discharge port 15 are both connected to the installation groove 11. The feed port 14 and the discharge port 15 are respectively located on both sides of the first fixing block 12. The conveying component 4 includes a feed conveyor belt 41 and a discharge conveyor belt 42. The feed conveyor belt 41 passes through the feed port 14, and the discharge conveyor belt 42 passes through the discharge port 15.

[0035] Reference Figure 2 The positioning component 2 includes a hydraulic cylinder 21, a support platform 22, a cover 23, and a chuck 24. The upper end of the first fixing block 12 is provided with a placement groove 121. The cylinder body of the hydraulic cylinder 21 is fixedly connected to the bottom of the placement groove 121. The piston rod of the hydraulic cylinder 21 is fixedly connected to the lower end of the support platform 22. The hydraulic cylinder 21 controls the support platform 22 to slide up and down. The cover 23 is located on the outer periphery of the first fixing block 12. The upper end of the cover 23 is fixedly connected to the outer wall of the support platform 22. The cover 23 is slidably connected to the outer wall of the first fixing block 12. The chuck 24 is fixedly connected to the upper end of the support platform 22. The chuck 24 is a vertical collet chuck 24.

[0036] Reference Figure 1 and Figure 2 The feeding conveyor belt 41 transports the shaft parts to the clamping port of the chuck 24. The chuck 24 clamps the parts, and the hydraulic cylinder 21 raises the support platform 22 to make the shaft parts misaligned with other shaft parts to be processed, which facilitates processing. After processing, the new shaft parts enter the chuck 24 and push the processed shaft parts into the discharge conveyor belt 42, and the cycle continues.

[0037] Two grinding components 3 are provided, one near the feed inlet 14 and the other near the discharge outlet 15. Each grinding component 3 includes a fixed base 31, a linear motor 32, a sliding table 33, a drive motor 34, and a grinding wheel 35. The fixed base 31 is fixedly connected to the second fixed block 13. The housing of the linear motor 32 is fixedly connected to the upper end of the fixed base 31. The sliding table of the linear motor 32 is fixedly connected to the sliding table 33. The sliding direction of the sliding table 33 is parallel to the axial direction of the shaft part. The motor housing of the drive motor 34 is fixedly connected to the upper end of the sliding table 33. The motor shaft of the drive motor 34 is coaxially fixedly connected to the grinding wheel 35. The grinding wheel 35 is used to grind both ends of the shaft part to process a chamfer. A protective cover for the grinding wheel 35 (not shown in the figure) is located on the outer periphery of the grinding wheel 35. The protective cover for the grinding wheel 35 is fixedly connected to the motor housing of the drive motor 34. The water outlet pipe (not shown in the figure) is fixedly connected to the outer wall of the protective cover for the grinding wheel 35, and the outlet of the water outlet pipe faces the contact point between the grinding wheel 35 and the shaft-like parts.

[0038] Reference Figure 2 The housing 1 has a receiving cavity 16 located below the mounting groove 11. The housing 1 also has a negative pressure port 17, with both ends connected to the mounting groove 11 and the receiving cavity 16, respectively. The negative pressure port 17 includes a first chip removal port 171 and a second chip removal port 172. The first chip removal port 171 is located between the first fixing block 12 and the second fixing block 13. The second chip removal port 172 is located on the side of the first fixing block 12 away from the second fixing block 13. Multiple first chip removal ports 171 are evenly spaced along the axial direction of the shaft-like part. Similarly, multiple second chip removal ports 172 are also evenly spaced along the axial direction of the shaft-like part. The height of the bottom of the mounting groove 11 increases with distance from the first chip removal port 171 on both sides of the first chip removal port 171, and the height of the bottom of the mounting groove 11 increases with distance from the second chip removal port 172 on both sides of the second chip removal port 172. The bottom of the mounting groove 11 on the side of the first chip discharge port 171 away from the first fixing block 12 is set as the first guide surface 111, and the bottom of the mounting groove 11 on the side of the second chip discharge port 172 away from the first fixing block 12 is set as the second guide surface 112. Both the first guide surface 111 and the second guide surface 112 are set as inclined surfaces.

[0039] Reference Figure 3The filter assembly 5 includes a filter drawer 51, a mounting door 52, a first spring 53, a second spring 54, a connecting rod 55, a control component 56, a receiving box 57, and an air supply component 58. The outer wall of the housing 1 has a mounting opening 18, the surface of which is perpendicular to the surface of the discharge port 15. The mounting opening 18 connects to the receiving cavity 16. A baffle 161 is fixedly connected to the inner wall of the receiving cavity 16. A groove 162 is provided on the inner wall of the receiving cavity 16 facing the mounting opening 18. The filter drawer 51 includes a frame 511 and a filter screen 512. The filter screen 512 is fixedly connected to the inner wall of the frame 511. The frame 511 is slidably connected to the inner wall of the mounting opening 18, the upper end face of the baffle 161, and the groove wall of the groove 162.

[0040] The mounting door 52 is used to cover the mounting opening 18. The mounting door 52 is detachably connected to the outer wall of the housing 1. The upper end of the mounting door 52 is hinged to the outer wall of the housing 1, and the lower end of the mounting door 52 is fixedly connected to the outer wall of the housing 1 by screws. The first spring 53 is located between the mounting door 52 and the frame 511. One end of the first spring 53 is fixedly connected to the end of the mounting door 52 facing the frame 511, and the other end of the first spring 53 abuts against the frame 511. One end of the second spring 54 is fixedly connected to the bottom of the groove 162, and the other end of the second spring 54 abuts against the frame 511.

[0041] Reference Figure 3 and Figure 4 The lower end of the frame 511 is provided with a relief groove 5111 for the connecting rod 55 to be inserted. One end of the connecting rod 55 is hinged to the groove wall of the relief groove 5111. The hinge axis of the connecting rod 55 is horizontal and perpendicular to the sliding direction of the frame 511. The hinge end of the connecting rod 55 is set close to the mounting port 18, so that when the frame 511 is installed, the connecting rod 55 is stored in the relief groove 5111 when it passes through the mounting port 18. When the connecting rod 55 enters the receiving cavity 16, the height difference causes the connecting rod 55 to rotate out. When the frame 511 is disassembled, the frame 511 slides when the connecting rod 55 passes through the mounting port 18, causing the connecting rod 55 to automatically be stored in the relief groove 5111.

[0042] The control component 56 includes a control motor 561, a rotating column 562, and a cam 563. The outer wall of the housing 1 has a rotating opening 19, which connects to the receiving cavity 16. The axis of the rotating opening 19 is horizontal and perpendicular to the length direction of the stop bar 161. The rotating opening 19 is located between the connecting rod 55 and the second spring 54. The rotation of the connecting rod 55 is blocked by the clearance groove 5111, allowing the connecting rod 55 to rotate a maximum of ninety degrees. The motor housing of the control motor 561 is fixedly connected to the outer wall of the housing 1. The motor shaft of the control motor 561 is coaxially fixedly connected to the rotating column 562. The rotating column 562 is coaxially rotatably connected to the inner wall of the rotating opening 19. The cam 563 is located within the receiving cavity 16 and is fixedly connected to the rotating column 562. The outer wall of the cam 563 abuts against the connecting rod 55. The outer wall of the housing 1 is provided with an assembly port 110, which is connected to the receiving cavity 16. The assembly port 110 is located below the baffle 161. The receiving box 57 is slidably connected to the inner wall of the assembly port 110 and the inner wall of the receiving cavity 16. The receiving box 57 is used to receive water filtered by the filter screen 512.

[0043] Reference Figure 1 and Figure 3 The air supply component 58 includes an air pump 581, a first pipe 582, a second pipe 583, a third pipe 584, a first check valve 585, and a second check valve 586. The outer wall of the housing 1 has an air outlet 120 located between the baffle 161 and the receiving box 57. The air outlet 120 is connected to the inlet of the air pump 581 via the first pipe 582. The mounting door 52 has a first air inlet 130 connected to the mounting opening 18. The outer wall of the housing 1 has a second air inlet 140 connected to the recess 162. The outlet of the air pump 581 is connected to the inlet of the gas purification box. The outlet of the gas purification box is connected to the first air inlet 130 via the second pipe 583 and to the second air inlet 140 via the third pipe 584. The axes of the first air inlet 130 and the second air inlet 140 are inclined. The opening of the first air inlet 130 faces the inner wall of the mounting port 18, and the opening of the second air inlet 140 faces the groove wall of the groove 162.

[0044] Reference Figure 2 and Figure 3The mounting groove 11 has a first cleaning port 113 and a second cleaning port 114 on its wall. The first cleaning port 113 is located on the side of the first chip discharge port 171 away from the positioning component 2, and the second cleaning port 114 is located on the side of the second chip discharge port 172 away from the positioning component 2. The openings of the first cleaning port 113 and the second cleaning port 114 are angled downwards. The opening of the first cleaning port 113 faces the first guide surface 111 and is used to blow impurities at the bottom of the mounting groove 11 toward the first chip discharge port 171. The opening of the second cleaning port 114 faces the second guide surface 112 and is used to blow the bottom of the mounting groove 11 toward the second chip discharge port 172. The housing 1 has a first channel 150 and a second channel 160. The first channel 150 is connected to the first cleaning port 113 and the mounting port 18, and the second channel 160 is connected to the second cleaning port 114 and the groove 162. The first check valve 585 is fixedly connected to the inner wall of the first channel 150, and the second check valve 586 is fixedly connected to the inner wall of the second channel 160.

[0045] The implementation principle of the shaft-type parts grinding device in this application embodiment is as follows: by utilizing the receiving cavity 16 located below the mounting groove 11 and the negative pressure port 17 connecting the two, a directional negative pressure airflow channel is constructed during the grinding process, which efficiently draws the splashed grinding debris into the receiving cavity 16 for centralized treatment. The debris mixed with water falls into the receiving box 57 after being filtered by the filter screen 512. The filter drawer 51 swings back and forth to reduce the probability of clogging. During the sliding process, the airflow is used to blow away the light dust accumulated on these horizontal surfaces, effectively preventing the adhesion and accumulation of debris under the action of gravity.

[0046] 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 shaft-type parts, characterized in that: The device includes a housing (1), a positioning component (2), and a grinding component (3). The upper end of the housing (1) is provided with a mounting groove (11). The positioning component (2) and the grinding component (3) are both fixedly connected to the bottom of the mounting groove (11). The housing (1) is provided with a receiving cavity (16), which is located below the mounting groove (11). The housing (1) is provided with a negative pressure port (17), and the two ends of the negative pressure port (17) are respectively connected to the mounting groove (11) and the receiving cavity (16).

2. The grinding device for shaft parts according to claim 1, characterized in that: It also includes a filter drawer (51), which includes a frame (511) and a filter screen (512). The filter screen (512) is fixedly connected to the inner wall of the frame (511). The outer wall of the box (1) is provided with an installation port (18). The installation port (18) is connected to the receiving cavity (16). The inner wall of the receiving cavity (16) is fixedly connected with a baffle (161). The frame (511) is slidably connected to the inner wall of the installation port (18) and the upper end face of the baffle (161).

3. The grinding device for shaft parts according to claim 2, characterized in that: It also includes a mounting door (52), a first spring (53), a connecting rod (55), and a cam (563). The mounting door (52) is used to cover the mounting opening (18). The mounting door (52) is detachably connected to the outer wall of the housing (1). The first spring (53) is located between the mounting door (52) and the frame (511). One end of the first spring (53) is fixedly connected to the end of the mounting door (52) facing the frame (511). The other end of the first spring (53) abuts against the frame (511). The connecting rod (55) is connected to the lower end of the frame (511). The cam (563) is located on the side of the connecting rod (55) away from the first spring (53). The cam (563) is rotatably connected to the inner wall of the receiving cavity (16). The outer wall of the cam (563) abuts against the connecting rod (55).

4. The grinding device for shaft parts according to claim 3, characterized in that: It also includes a second spring (54), and the inner wall of the receiving cavity (16) facing the mounting port (18) is provided with a groove (162), the groove (162) is used for the frame (511) to be inserted, one end of the second spring (54) is fixedly connected to the bottom of the groove (162), and the other end of the second spring (54) is used to abut against the frame (511).

5. A grinding device for shaft-type parts according to claim 4, characterized in that: It also includes an air pump (581), the outer wall of the housing (1) is provided with an air outlet (120), the air outlet (120) is connected to the inlet of the air pump (581), the mounting door (52) is provided with a first air inlet (130), the first air inlet (130) is connected to the mounting port (18), the outer wall of the housing (1) is provided with a second air inlet (140), the second air inlet (140) is connected to the groove (162), and the outlet of the air pump (581) is connected to the first air inlet (130) and the second air inlet (140).

6. The grinding device for shaft parts according to claim 5, characterized in that: The bottom of the mounting groove (11) is fixedly connected to a first fixing block (12) and a second fixing block (13). The first fixing block (12) is located in the middle of the mounting groove (11), and the second fixing block (13) is fixedly connected to the groove wall of the mounting groove (11). The positioning component (2) is connected to the first fixing block (12), and the grinding component (3) is connected to the second fixing block (13). The negative pressure port (17) includes a first chip discharge port (171) and a second chip discharge port (172). The first chip discharge port (171) is located between the first fixing block (12) and the second fixing block (13), and the second chip discharge port (172) is located on the side of the first fixing block (12) away from the second fixing block (13). The height of the bottom of the mounting groove (11) increases as it moves away from the first chip discharge port (171), and the height of the bottom of the mounting groove (11) increases as it moves away from the second chip discharge port (172).

7. A grinding device for shaft parts according to claim 6, characterized in that: The mounting groove (11) has a first cleaning port (113) and a second cleaning port (114) on its wall. The first cleaning port (113) is located on the side of the first chip discharge port (171) away from the positioning component (2), and the second cleaning port (114) is located on the side of the second chip discharge port (172) away from the positioning component (2). The openings of the first cleaning port (113) and the second cleaning port (114) are angled downwards. The first cleaning port (113) is used to blow impurities at the bottom of the mounting groove (11) toward the first chip discharge port (171), and the second cleaning port (114) is used to blow the bottom of the mounting groove (11) toward the second chip discharge port (172). The housing (1) has a first channel (150) and a second channel (160). The first channel (150) is connected to the first cleaning port (113) and the mounting port (18), and the second channel (160) is connected to the second cleaning port (114) and the recess (162).

8. A grinding device for shaft parts according to claim 7, characterized in that: It also includes a first check valve (585) and a second check valve (586), the first check valve (585) being fixedly connected to the inner wall of the first channel (150), and the second check valve (586) being fixedly connected to the inner wall of the second channel (160).

9. A grinding device for shaft-type parts according to claim 5, characterized in that: The axes of the first air inlet (130) and the second air inlet (140) are inclined. The opening of the first air inlet (130) faces the inner wall of the mounting port (18) and the opening of the second air inlet (140) faces the groove wall of the groove (162) and the groove wall of the mounting groove (162) and the groove wall of the mounting groove (162) and the groove wall of the mounting groove (140) and the groove wall of the mounting groove (162) are inclined.

10. A grinding device for shaft-type parts according to claim 3, characterized in that: The lower end of the frame (511) is provided with a relief groove (5111), which is used for the insertion of the connecting rod (55). One end of the connecting rod (55) is hinged to the groove wall of the relief groove (5111), and the hinged end of the connecting rod (55) is located near the mounting port (18).

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