Plane grinding structure of multi-head grinding machine

Abstract

The utility model discloses a plane grinding structure of a multi-head grinding machine, and aims to overcome the defects that the upper plane and the side face of a linear guide rail need to be ground on different grinding machines, and a grinding wheel of a grinding head needs to be trimmed in the process of switching from rough grinding to fine grinding, so that the working efficiency is influenced. The plane grinding device comprises a stand column installed on the multi-head grinding machine in a sliding mode, a lifting base capable of moving in a lifting mode is installed on the stand column, a plane grinding head transversely arranged is installed on the lifting base, the plane grinding head comprises a rough grinding wheel disc and a fine grinding wheel disc, and the rough grinding wheel disc and the fine grinding wheel disc are arranged at intervals in the axial direction. According to the plane grinding structure of the multi-head grinding machine, grinding machining of the upper plane of a linear guide rail can be completed on the same grinding machine, in the process of switching from rough grinding to accurate grinding, the dressing action of a grinding wheel is omitted, and the working efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding technology, and more specifically, to a surface grinding structure for a multi-head grinding machine. Background Technology

[0002] Currently, in the grinding of linear guideways, the machining of the top surface and the left and right sides needs to be performed on different grinding machines, resulting in long processing times and low work efficiency. Furthermore, the need for positioning on different grinding machines can easily affect machining accuracy. Moreover, the machining of the top surface of the linear guideway involves rough grinding followed by finish grinding. The transition from rough to finish grinding requires dressing the grinding head and wheel, changing the grinding surface from the rough grinding surface to the finish grinding surface, further reducing work efficiency. For example, Chinese patent application number 2019103191836 discloses a CNC gantry linear guideway forming grinding machine that eliminates the need to change the worktable according to the workpiece height, saving costs. For grinding inclined surfaces, the grinding head can be rotated, significantly improving processing efficiency. However, the need to dress the grinding head and wheel during the transition from rough to finish grinding still impacts work efficiency. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a surface grinding structure for a multi-head grinder, which enables linear guideways to complete the grinding of the upper surface on the same grinder. Moreover, during the transition from rough grinding to fine grinding, the dressing action of the grinding wheel is eliminated, which helps to improve work efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a surface grinding structure for a multi-head grinding machine, comprising a column slidably mounted on the multi-head grinding machine, a lifting seat that can be raised and lowered on the column, and a horizontally arranged surface grinding head mounted on the lifting seat. The surface grinding head includes a coarse grinding wheel and a fine grinding wheel, which are axially spaced apart.

[0005] The entire device is installed on a multi-head grinding machine, enabling it to grind not only the sides of linear guideways but also the upper surface of them. During operation, the column slides, moving the surface grinding head above the linear guideway. Then, the lifting platform moves downwards, bringing the surface grinding head into contact with the upper surface of the linear guideway, where it rotates to perform grinding. During the grinding operation, the rough grinding wheel first contacts the upper surface of the linear guideway for rough grinding, while the fine grinding wheel is misaligned with it. After rough grinding, the column moves to bring the fine grinding wheel into contact with the upper surface of the linear guideway for fine grinding, at which point the rough grinding wheel is misaligned again. No wheel dressing is required during the transition from rough to fine grinding.

[0006] The surface grinding structure of the multi-head grinder in this patent application enables the linear guideway to complete the grinding of the upper surface on the same grinder. Moreover, the process of switching from rough grinding to fine grinding eliminates the need for grinding wheel dressing, which helps to improve work efficiency.

[0007] Preferably, the lifting seat is provided with an outwardly extending extension seat, a rotating shaft is installed on the extension seat, a grinding motor is installed on the lifting seat, the output shaft of the grinding motor is connected to the rotating shaft, and the surface grinding head is installed at the outer end of the rotating shaft.

[0008] The rotating shaft is mounted on the extension seat, ensuring smooth and reliable rotation. The extension seat allows the surface grinding head to be moved above the linear guide, facilitating grinding operations.

[0009] Preferably, a positioning sleeve is installed on the extension seat, the rotating shaft is movably connected to the positioning sleeve, and bearings are installed between the two ends of the rotating shaft and the positioning sleeve.

[0010] The locating sleeve positions the rotating shaft, and the bearing is installed between the rotating shaft and the locating sleeve to ensure the smooth rotation of the rotating shaft.

[0011] Preferably, a front protective cover and a rear protective cover are installed at both ends of the positioning sleeve and between the rotating shaft, respectively.

[0012] The front and rear protective covers serve a protective function, preventing wear debris from entering between the rotating shaft and the positioning sleeve.

[0013] Preferably, a horizontal sliding slider and a screw hole drive sleeve are installed at the bottom of the column.

[0014] The column is installed on the grinding machine, which is equipped with a transverse slide rail and a transverse screw driven by a motor. The transverse slider is fitted onto the transverse slide rail, and the transverse screw is fitted and connected to the screw hole drive sleeve. The rotation of the transverse screw drives the column to move laterally.

[0015] Preferably, a lifting slide rail and a lifting motor are installed on the column, a lifting slider is adapted to be installed on the lifting slide rail, the lifting slider is fastened to the lifting seat, a lifting screw sleeve is installed on the lifting seat, the lifting motor is driven to connect to the lifting screw, and the lifting screw is adapted to be connected to the lifting screw sleeve.

[0016] The lifting motor drives the lifting screw to rotate, and the lifting screw is adapted to the lifting sleeve, thereby driving the lifting seat to move up and down. During the movement of the lifting seat, the lifting slider slides on the lifting rail, which is smooth and reliable.

[0017] Preferably, a U-shaped wire harness tube is installed on the upper part of the column, and an L-shaped support is installed on the column. Reinforcing ribs are provided at both ends of the support, and the wire harness tube is installed on the support.

[0018] The wire harness tube facilitates the laying of wire harnesses, and the support facilitates the installation of the wire harness tube.

[0019] Preferably, a rotating shaft is installed on the lifting seat, a fixed seat is fastened to the rotating shaft, a movable clamp is connected to the fixed seat, and the surface grinding head is clamped between the fixed seat and the movable clamp.

[0020] The surface grinding head is clamped between a fixed seat and a movable clamp, while the fixed seat is securely mounted on the rotating shaft, thus achieving reliable clamping of the surface grinding head.

[0021] Preferably, the sidewall of the surface grinding head is grooved to form a ring of isolation grooves, which separate the surface grinding head into a coarse grinding wheel and a fine grinding wheel.

[0022] Isolation grooves are set on the side wall of the surface grinding head to form a coarse grinding wheel and a fine grinding wheel, which facilitates the installation of the surface grinding head.

[0023] Preferably, an upper sensor bracket and a lower sensor bracket are installed on the column, and an upper sensor and a lower sensor are installed on the lifting platform. The upper sensor can sense the upper sensor bracket, and the lower sensor can sense the lower sensor bracket.

[0024] During the movement of the lifting platform, the upper sensor detects the upper sensing bracket, indicating that the lifting platform has moved downwards to its maximum position. The lower sensor detects the lower sensing bracket, indicating that the lifting platform has moved upwards to its maximum position. This structural design controls the lifting distance of the platform, preventing it from overshooting and causing safety hazards.

[0025] Compared with the prior art, the beneficial effects of this utility model are: (1) The surface grinding structure of the multi-head grinding machine of this patent application enables the linear guide rail to complete the grinding of the upper surface on the same grinding machine, and the grinding wheel dressing action is eliminated during the process of switching from rough grinding to fine grinding, which is conducive to improving work efficiency; (2) During the rotation of the surface grinding head, the rotating shaft rotates in the positioning sleeve, which is stable and reliable, and the front protective cover and the rear protective cover are installed at both ends of the positioning sleeve, which plays a protective role and prevents grinding debris from entering between the rotating shaft and the positioning sleeve. Attached Figure Description

[0026] Figure 1 This is a top view of the installation state of this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of this utility model.

[0028] Figure 3 This is a cross-sectional view of Embodiment 1 of this utility model.

[0029] Figure 4 This is an exploded view of this utility model.

[0030] Figure 5 This is a schematic diagram of the installation of the surface grinding head in Embodiment 2 of this utility model.

[0031] Figure 6 This is a schematic diagram of the installation of the surface grinding head in Embodiment 3 of this utility model.

[0032] In the diagram: 1. Multi-head grinder; 2. Column; 3. Transverse slide block; 4. Screw drive sleeve; 5. Lifting seat; 6. Surface grinding head; 7. Rough grinding wheel; 8. Fine grinding wheel; 9. Isolation groove; 10. Rotating shaft; 11. Fixed seat; 12. Movable clamp; 13. Connector; 14. Connecting hole; 15. Pressure plate; 16. Extension seat; 17. Grinding motor; 18. Clearance slot; 19. Positioning sleeve; 20. Front protective cover; 21. Rear protective cover; 22. Front limit. 23. Position ring, rear limit ring, 24. Lifting slide rail, 25. Lifting motor, 26. Lifting slider, 27. Lifting sleeve, 28. Lifting screw, 29. Connecting seat, 30. Wiring harness tube, 31. Upper sensor bracket, 32. Lower sensor bracket, 33. Upper sensor, 34. Lower sensor, 35. Anti-rotation key, 36. Anti-rotation hole, 37. Anti-rotation pin, 38. Locking plate, 39. Preload spring, 40. Unlocking rod, 41. Push groove, 42. Push column. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0034] Example 1: A surface grinding structure for a multi-head grinder (see...) Figures 1 to 4 The system includes a column 2 that is slidably mounted on a multi-head grinding machine 1. A transverse slide block 3 and a screw drive sleeve 4 are mounted on the bottom of the column 2. The column 2 is mounted on the grinding machine, which is equipped with transverse slide rails and a transverse screw driven by a motor. Two transverse slide rails are arranged in parallel. The transverse slide block 3 is fitted onto the transverse slide rails. The transverse screw is fitted and connected to the screw drive sleeve 4. The rotation of the transverse screw drives the column 2 to move laterally.

[0035] A lifting seat 5 that can be raised and moved is installed on the column 2. The lifting seat 5 has a hollow structure and several weight-reducing slots are provided on the surface of the lifting seat 5. A horizontally arranged surface grinding head 6 is installed on the lifting seat 5. The axis of the surface grinding head 6 is arranged horizontally. The surface grinding head 6 includes a coarse grinding wheel 7 and a fine grinding wheel 8. The coarse grinding wheel 7 and the fine grinding wheel 8 are arranged axially at intervals.

[0036] A ring-shaped isolation groove 9 is formed by cutting grooves on the side wall of the surface grinding head 6, dividing the surface grinding head 6 into a coarse grinding wheel 7 and a fine grinding wheel 8. A rotating shaft 10 is mounted on the lifting seat 5, and a fixed seat 11 is fastened to the rotating shaft 10. A movable clamping seat 12 is connected to the fixed seat 11, and the surface grinding head 6 is clamped between the fixed seat 11 and the movable clamping seat 12. The fixed seat 11 and the movable clamping seat 12 are fastened together with screws.

[0037] A frustum-shaped connector 13 is provided at the outer end of the rotating shaft 10. A connecting hole 14 adapted to the connector 13 is provided on the fixed seat 11. The inner wall of the connecting hole 14 has a frustum-shaped structure. The connecting hole 14 on the fixed seat 11 is fitted and connected to the connector 13. A pressure plate 15 is fastened to the end of the connector 13. The pressure plate 15 is pressed on the fixed seat 11 to achieve the positioning of the fixed seat 11.

[0038] The lifting base 5 is provided with an outwardly extending extension seat 16, on which a rotating shaft 10 is mounted. A grinding motor 17 is mounted on the lifting base 5, and the output shaft of the grinding motor 17 is connected to the rotating shaft 10. A surface grinding head 6 is mounted on the outer end of the rotating shaft 10. The lifting base 5 is provided with a clearance slot 18, which is correspondingly positioned to the grinding motor 17, with the grinding motor 17 placed within the clearance slot 18.

[0039] A positioning sleeve 19 is installed on the extension seat 16. The rotating shaft 10 is movably connected to the positioning sleeve 19. Bearings are installed between the two ends of the rotating shaft 10 and the positioning sleeve 19. A front protective cover 20 and a rear protective cover 21 are respectively installed between the two ends of the positioning sleeve 19 and the rotating shaft 10.

[0040] The rear end of the rotating shaft 10 and the output shaft of the grinding motor 17 are connected by a coupling. A rear limiting ring 23 and two bearings are installed at the rear end of the rotating shaft 10, with the rear limiting ring 23 resting against the inner ring of the rear bearing. Four bearings are installed at the front end of the rotating shaft 10, and a front limiting ring 22 is fastened to the front end of the positioning sleeve 19, with the front limiting ring 22 resting against the outer ring of the front bearing. A front protective cover 20 covers the front limiting ring 22, and a rear protective cover 21 covers the rear limiting ring 23.

[0041] A lifting slide rail 24 and a lifting motor 25 are installed on the column 2. The lifting motor 25 is installed at the upper end of the column 2. Two lifting slide rails 24 are arranged opposite each other on the left and right sides of the column 2. Lifting sliders 26 are fitted onto the lifting slide rails 24 and are fastened to the lifting seat 5. A lifting screw sleeve 27 is installed on the lifting seat 5. The lifting motor 25 is driven by a lifting screw 28, which is fitted and connected to the lifting screw sleeve 27. A driving bevel gear is installed on the output shaft of the lifting motor 25, and a driven bevel gear is installed on the upper end of the lifting screw 28. The driving bevel gear and the driven bevel gear mesh and transmit power. A connecting seat 29 is provided at the upper end of the column 2, and the upper end of the lifting screw 28 is rotatably mounted on the connecting seat 29.

[0042] A U-shaped wire harness tube 30 is installed on the upper part of the column 2, and an L-shaped support is installed on the column 2. Reinforcing ribs are provided at both ends of the support, and the wire harness tube 30 is mounted on the support. An upper sensor bracket 31 and a lower sensor bracket 32 ​​are installed on the column 2, and an upper sensor 33 and a lower sensor 34 are installed on the lifting platform 5. The upper sensor 33 senses the upper sensor bracket 31, and the lower sensor 34 senses the lower sensor bracket 32. During the movement of the lifting platform 5, when the upper sensor 33 senses the upper sensor bracket 31, it indicates that the lifting platform 5 has moved downwards to its limit position. When the lower sensor 34 senses the lower sensor bracket 32, it indicates that the lifting platform 5 has moved upwards to its limit position. This structural design enables control of the lifting distance of the lifting platform 5, preventing it from overshooting and causing safety hazards.

[0043] The entire device is installed on a multi-head grinding machine 1, enabling the machine to grind not only the sides of the linear guideway but also the upper surface of the linear guideway. During operation, the column 2 slides to move the surface grinding head 6 above the linear guideway. Then, the lifting seat 5 moves downwards, bringing the surface grinding head 6 into contact with the upper surface of the linear guideway, and the surface grinding head 6 rotates to perform grinding. During the grinding operation, the rough grinding wheel 7 first contacts the upper surface of the linear guideway for rough grinding, while the fine grinding wheel 8 is displaced from the upper surface of the linear guideway. After rough grinding, the column 2 moves to bring the fine grinding wheel 8 into contact with the upper surface of the linear guideway for fine grinding, while the rough grinding wheel 7 is displaced from the upper surface of the linear guideway. No dressing of the grinding wheel is required during the transition from rough to fine grinding.

[0044] Example 2: A surface grinding structure for a multi-head grinder (see...) Figure 1 , Figure 2 , Figure 4 , Figure 5 The system includes a column 2 that is slidably mounted on a multi-head grinding machine 1. A transverse slide block 3 and a screw drive sleeve 4 are mounted on the bottom of the column 2. The column 2 is mounted on the grinding machine, which is equipped with transverse slide rails and a transverse screw driven by a motor. Two transverse slide rails are arranged in parallel. The transverse slide block 3 is fitted onto the transverse slide rails. The transverse screw is fitted and connected to the screw drive sleeve 4. The rotation of the transverse screw drives the column 2 to move laterally.

[0045] A lifting seat 5 that can be raised and moved is installed on the column 2. The lifting seat 5 has a hollow structure and several weight-reducing slots are provided on the surface of the lifting seat 5. A horizontally arranged surface grinding head 6 is installed on the lifting seat 5. The axis of the surface grinding head 6 is arranged horizontally. The surface grinding head 6 includes a coarse grinding wheel 7 and a fine grinding wheel 8. The coarse grinding wheel 7 and the fine grinding wheel 8 are arranged axially at intervals.

[0046] A ring-shaped isolation groove 9 is formed by cutting grooves on the side wall of the surface grinding head 6, dividing the surface grinding head 6 into a coarse grinding wheel 7 and a fine grinding wheel 8. A rotating shaft 10 is mounted on the lifting seat 5, and a fixed seat 11 is fastened to the rotating shaft 10. A movable clamping seat 12 is connected to the fixed seat 11, and the surface grinding head 6 is clamped between the fixed seat 11 and the movable clamping seat 12. The fixed seat 11 and the movable clamping seat 12 are fastened together with screws.

[0047] A connector 13 is provided at the outer end of the rotating shaft 10. A connecting hole 14 adapted to the connector 13 is provided on the fixed seat 11. The connecting hole 14 on the fixed seat 11 is fitted with the connector 13. Both the connecting hole 14 and the connector 13 are circular. An anti-rotation key 35 is installed between the connector 13 and the connecting hole 14. A pressure plate 15 is fastened to the end of the connector 13. The pressure plate 15 is pressed against the fixed seat 11 to achieve the positioning of the fixed seat 11.

[0048] The lifting base 5 is provided with an outwardly extending extension seat 16, on which a rotating shaft 10 is mounted. A grinding motor 17 is mounted on the lifting base 5, and the output shaft of the grinding motor 17 is connected to the rotating shaft 10. A surface grinding head 6 is mounted on the outer end of the rotating shaft 10. The lifting base 5 is provided with a clearance slot 18, which is correspondingly positioned to the grinding motor 17, with the grinding motor 17 placed within the clearance slot 18.

[0049] A positioning sleeve 19 is installed on the extension seat 16. The rotating shaft 10 is movably connected to the positioning sleeve 19. Bearings are installed between the two ends of the rotating shaft 10 and the positioning sleeve 19. A front protective cover 20 and a rear protective cover 21 are respectively installed between the two ends of the positioning sleeve 19 and the rotating shaft 10.

[0050] The rear end of the rotating shaft 10 and the output shaft of the grinding motor 17 are connected by a coupling. A rear limiting ring 23 and two bearings are installed at the rear end of the rotating shaft 10, with the rear limiting ring 23 resting against the inner ring of the rear bearing. Four bearings are installed at the front end of the rotating shaft 10, and a front limiting ring 22 is fastened to the front end of the positioning sleeve 19, with the front limiting ring 22 resting against the outer ring of the front bearing. A front protective cover 20 covers the front limiting ring 22, and a rear protective cover 21 covers the rear limiting ring 23.

[0051] A lifting slide rail 24 and a lifting motor 25 are installed on the column 2. The lifting motor 25 is installed at the upper end of the column 2. Two lifting slide rails 24 are arranged opposite each other on the left and right sides of the column 2. Lifting sliders 26 are fitted onto the lifting slide rails 24 and are fastened to the lifting seat 5. A lifting screw sleeve 27 is installed on the lifting seat 5. The lifting motor 25 is driven by a lifting screw 28, which is fitted and connected to the lifting screw sleeve 27. A driving bevel gear is installed on the output shaft of the lifting motor 25, and a driven bevel gear is installed on the upper end of the lifting screw 28. The driving bevel gear and the driven bevel gear mesh and transmit power. A connecting seat 29 is provided at the upper end of the column 2, and the upper end of the lifting screw 28 is rotatably mounted on the connecting seat 29.

[0052] A U-shaped wire harness tube 30 is installed on the upper part of the column 2, and an L-shaped support is installed on the column 2. Reinforcing ribs are provided at both ends of the support, and the wire harness tube 30 is mounted on the support. An upper sensor bracket 31 and a lower sensor bracket 32 ​​are installed on the column 2, and an upper sensor 33 and a lower sensor 34 are installed on the lifting platform 5. The upper sensor 33 senses the upper sensor bracket 31, and the lower sensor 34 senses the lower sensor bracket 32. During the movement of the lifting platform 5, when the upper sensor 33 senses the upper sensor bracket 31, it indicates that the lifting platform 5 has moved downwards to its limit position. When the lower sensor 34 senses the lower sensor bracket 32, it indicates that the lifting platform 5 has moved upwards to its limit position. This structural design enables control of the lifting distance of the lifting platform 5, preventing it from overshooting and causing safety hazards.

[0053] The entire device is installed on a multi-head grinding machine 1, enabling the machine to grind not only the sides of the linear guideway but also the upper surface of the linear guideway. During operation, the column 2 slides to move the surface grinding head 6 above the linear guideway. Then, the lifting seat 5 moves downwards, bringing the surface grinding head 6 into contact with the upper surface of the linear guideway, and the surface grinding head 6 rotates to perform grinding. During the grinding operation, the rough grinding wheel 7 first contacts the upper surface of the linear guideway for rough grinding, while the fine grinding wheel 8 is displaced from the upper surface of the linear guideway. After rough grinding, the column 2 moves to bring the fine grinding wheel 8 into contact with the upper surface of the linear guideway for fine grinding, while the rough grinding wheel 7 is displaced from the upper surface of the linear guideway. No dressing of the grinding wheel is required during the transition from rough to fine grinding.

[0054] Example 3: A surface grinding structure for a multi-head grinder (see...) Figure 1 , Figure 2 , Figure 4 , Figure 6 The system includes a column 2 that is slidably mounted on a multi-head grinding machine 1. A transverse slide block 3 and a screw drive sleeve 4 are mounted on the bottom of the column 2. The column 2 is mounted on the grinding machine, which is equipped with transverse slide rails and a transverse screw driven by a motor. Two transverse slide rails are arranged in parallel. The transverse slide block 3 is fitted onto the transverse slide rails. The transverse screw is fitted and connected to the screw drive sleeve 4. The rotation of the transverse screw drives the column 2 to move laterally.

[0055] A lifting seat 5 that can be raised and moved is installed on the column 2. The lifting seat 5 has a hollow structure and several weight-reducing slots are provided on the surface of the lifting seat 5. A horizontally arranged surface grinding head 6 is installed on the lifting seat 5. The axis of the surface grinding head 6 is arranged horizontally. The surface grinding head 6 includes a coarse grinding wheel 7 and a fine grinding wheel 8. The coarse grinding wheel 7 and the fine grinding wheel 8 are arranged axially at intervals.

[0056] A ring-shaped isolation groove 9 is formed by cutting grooves on the side wall of the surface grinding head 6, dividing the surface grinding head 6 into a coarse grinding wheel 7 and a fine grinding wheel 8. A rotating shaft 10 is mounted on the lifting seat 5, and a fixed seat 11 is fastened to the rotating shaft 10. A movable clamping seat 12 is connected to the fixed seat 11, and the surface grinding head 6 is clamped between the fixed seat 11 and the movable clamping seat 12. The fixed seat 11 and the movable clamping seat 12 are fastened together with screws.

[0057] A connector 13 is provided at the outer end of the rotating shaft 10. A connecting hole 14 adapted to the connector 13 is provided on the fixed base 11. The connecting hole 14 on the fixed base 11 is fitted to the connector 13. Both the connector 13 and the connecting hole 14 are circular. Several anti-rotation holes 36 are evenly distributed on the outer wall of the connector 13. Anti-rotation pins 37 corresponding to the anti-rotation holes 36 are connected to the inner wall of the connecting hole 14. A locking plate 38 is connected to the fixed base 11. A pre-tension spring 39 is installed between the locking plate 38 and the connector 13. An unlocking rod 40 corresponding to the anti-rotation pin 37 is provided on the locking plate 38. An inclined pushing groove 41 is provided on the unlocking rod 40. A pushing column 42 is provided on the anti-rotation pin 37. The pushing column 42 is movably inserted into the pushing groove 41. The anti-rotation pin 37 is inserted into the anti-rotation hole 36. Under the action of the pre-tightening spring 39, the anti-rotation pin 37 is placed at the inner end of the push groove 41. At this time, the anti-rotation pin 37 is inserted into the anti-rotation hole 36, realizing the locking and positioning of the fixed seat 11 and the connector 13.

[0058] During the installation of the fixing seat 11 onto the connector 13, first push the locking plate 38 towards the fixing seat 11 to retract the anti-rotation pin 37. After the fixing seat 11 is fully fitted onto the connector 13, release the locking plate 38 and rotate the fixing seat 11 to insert the anti-rotation pin 37 into the anti-rotation hole 36. To disassemble the fixing seat 11, push the locking plate 38 towards the fixing seat 11 to retract the anti-rotation pin 37, and then pull the fixing seat 11 outwards. This structural design facilitates the assembly and disassembly of the fixing seat 11 and the rotating shaft 10.

[0059] The lifting base 5 is provided with an outwardly extending extension seat 16, on which a rotating shaft 10 is mounted. A grinding motor 17 is mounted on the lifting base 5, and the output shaft of the grinding motor 17 is connected to the rotating shaft 10. A surface grinding head 6 is mounted on the outer end of the rotating shaft 10. The lifting base 5 is provided with a clearance slot 18, which is correspondingly positioned to the grinding motor 17, with the grinding motor 17 placed within the clearance slot 18.

[0060] A positioning sleeve 19 is installed on the extension seat 16. The rotating shaft 10 is movably connected to the positioning sleeve 19. Bearings are installed between the two ends of the rotating shaft 10 and the positioning sleeve 19. A front protective cover 20 and a rear protective cover 21 are respectively installed between the two ends of the positioning sleeve 19 and the rotating shaft 10.

[0061] The rear end of the rotating shaft 10 and the output shaft of the grinding motor 17 are connected by a coupling. A rear limiting ring 23 and two bearings are installed at the rear end of the rotating shaft 10, with the rear limiting ring 23 resting against the inner ring of the rear bearing. Four bearings are installed at the front end of the rotating shaft 10, and a front limiting ring 22 is fastened to the front end of the positioning sleeve 19, with the front limiting ring 22 resting against the outer ring of the front bearing. A front protective cover 20 covers the front limiting ring 22, and a rear protective cover 21 covers the rear limiting ring 23.

[0062] A lifting slide rail 24 and a lifting motor 25 are installed on the column 2. The lifting motor 25 is installed at the upper end of the column 2. Two lifting slide rails 24 are arranged opposite each other on the left and right sides of the column 2. Lifting sliders 26 are fitted onto the lifting slide rails 24 and are fastened to the lifting seat 5. A lifting screw sleeve 27 is installed on the lifting seat 5. The lifting motor 25 is driven by a lifting screw 28, which is fitted and connected to the lifting screw sleeve 27. A driving bevel gear is installed on the output shaft of the lifting motor 25, and a driven bevel gear is installed on the upper end of the lifting screw 28. The driving bevel gear and the driven bevel gear mesh and transmit power. A connecting seat 29 is provided at the upper end of the column 2, and the upper end of the lifting screw 28 is rotatably mounted on the connecting seat 29.

[0063] A U-shaped wire harness tube 30 is installed on the upper part of the column 2, and an L-shaped support is installed on the column 2. Reinforcing ribs are provided at both ends of the support, and the wire harness tube 30 is mounted on the support. An upper sensor bracket 31 and a lower sensor bracket 32 ​​are installed on the column 2, and an upper sensor 33 and a lower sensor 34 are installed on the lifting platform 5. The upper sensor 33 senses the upper sensor bracket 31, and the lower sensor 34 senses the lower sensor bracket 32. During the movement of the lifting platform 5, when the upper sensor 33 senses the upper sensor bracket 31, it indicates that the lifting platform 5 has moved downwards to its limit position. When the lower sensor 34 senses the lower sensor bracket 32, it indicates that the lifting platform 5 has moved upwards to its limit position. This structural design enables control of the lifting distance of the lifting platform 5, preventing it from overshooting and causing safety hazards.

[0064] The entire device is installed on a multi-head grinding machine 1, enabling the machine to grind not only the sides of the linear guideway but also the upper surface of the linear guideway. During operation, the column 2 slides to move the surface grinding head 6 above the linear guideway. Then, the lifting seat 5 moves downwards, bringing the surface grinding head 6 into contact with the upper surface of the linear guideway, and the surface grinding head 6 rotates to perform grinding. During the grinding operation, the rough grinding wheel 7 first contacts the upper surface of the linear guideway for rough grinding, while the fine grinding wheel 8 is displaced from the upper surface of the linear guideway. After rough grinding, the column 2 moves to bring the fine grinding wheel 8 into contact with the upper surface of the linear guideway for fine grinding, while the rough grinding wheel 7 is displaced from the upper surface of the linear guideway. No dressing of the grinding wheel is required during the transition from rough to fine grinding.

[0065] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A surface grinding structure for a multi-head grinding machine, characterized in that, It includes a column that is slidably mounted on a multi-head grinding machine, a lifting seat that is raised and moved on the column, and a horizontally arranged surface grinding head on the lifting seat. The surface grinding head includes a coarse grinding wheel and a fine grinding wheel, which are axially spaced apart.

2. The surface grinding structure of a multi-head grinding machine according to claim 1, characterized in that, The lifting base is equipped with an outwardly extending extension seat, on which a rotating shaft is installed. A grinding motor is installed on the lifting base, and the output shaft of the grinding motor is connected to the rotating shaft. The surface grinding head is installed at the outer end of the rotating shaft.

3. The surface grinding structure of a multi-head grinding machine according to claim 2, characterized in that, A positioning sleeve is installed on the extension seat, and the rotating shaft is connected to the positioning sleeve in a movable manner. Bearings are installed between the two ends of the rotating shaft and the positioning sleeve.

4. The surface grinding structure of a multi-head grinding machine according to claim 3, characterized in that, Front and rear protective covers are installed at both ends of the positioning sleeve and between the rotating shaft, respectively.

5. The surface grinding structure of a multi-head grinding machine according to claim 1, characterized in that, A horizontal sliding slider and a screw hole drive sleeve are installed at the bottom of the column.

6. The surface grinding structure of a multi-head grinder according to claim 1, characterized in that, A lifting slide rail and a lifting motor are installed on the column. A lifting slider is fitted on the lifting slide rail. The lifting slider is fastened to the lifting seat. A lifting screw sleeve is installed on the lifting seat. The lifting motor is driven and connected to the lifting screw rod. The lifting screw rod is fitted and connected to the lifting screw sleeve.

7. The surface grinding structure of a multi-head grinder according to claim 1, characterized in that, A U-shaped wire harness tube is installed on the upper part of the column, and an L-shaped support is installed on the column. Reinforcing ribs are provided at both ends of the support, and the wire harness tube is installed on the support.

8. The surface grinding structure of a multi-head grinder according to claim 1, characterized in that, A rotating shaft is installed on the lifting seat, and a fixed seat is fastened to the rotating shaft. A movable clamp is connected to the fixed seat, and the surface grinding head is clamped between the fixed seat and the movable clamp.

9. A surface grinding structure for a multi-head grinding machine according to any one of claims 1 to 8, characterized in that, The sidewall of the surface grinding head is grooved to form a ring of isolation grooves, which separate the surface grinding head into a coarse grinding wheel and a fine grinding wheel.

10. A surface grinding structure for a multi-head grinding machine according to any one of claims 1 to 8, characterized in that, An upper sensor bracket and a lower sensor bracket are installed on the column, and an upper sensor and a lower sensor are installed on the lifting platform. The upper sensor can sense the upper sensor bracket, and the lower sensor can sense the lower sensor bracket.

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