A metal processing grinding machine

Abstract

The present invention relates to the technical field of gear grinding, in particular to a metal processing grinder, comprising a horizontally arranged base and two horizontally arranged mounting plates, wherein: a rotating shaft is rotatably installed in the middle of the base, a beam is horizontally fixedly connected to the top end of the rotating shaft, a guide groove is opened on the beam, a guide block is slidably fitted in the guide groove, and the bottom of the guide block is connected to the mounting plate through a rotating structure; when the metal processing grinder provided by the present invention grinds a cast gear, since the rubber gear made of rubber material itself has a certain deformation ability, when the teeth of the rubber gear enter between the tooth blocks of the gear to be grinded, the pressure of the rubber gear on the tooth block will not be too large, so as to prevent the tooth block from being deformed due to excessive force.

Description

Technical Field

[0001] The invention relates to the technical field of gear grinding, in particular to a metal processing grinder. Background Art

[0002] Casting gears are widely used in the machinery manufacturing industry due to their good processing performance, high wear resistance, low noise and low cost. Gears are prone to many burrs during the casting process, and direct use is not conducive to the normal operation of the machinery. Therefore, the casting gears need to be deburred by grinding equipment after demoulding.

[0003] In the prior art, when deburring the tooth block surface of a cast gear, most of the grinding is done by meshing a gear-shaped grinding wheel with the cast gear. However, in actual use, due to the meshing of the gear-shaped grinding wheel and the cast gear, when the teeth of the gear-shaped grinding wheel enter between the tooth blocks of the cast gear, the teeth may generate a large interaction force with the burrs on the surface of the tooth block, which not only reduces the service life of the grinding wheel, but also may cause deformation of the tooth block. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a metal processing grinder.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A metal processing grinder is designed, comprising a horizontally arranged base and two horizontally arranged mounting plates, a rotating shaft is rotatably mounted in the middle of the base, a beam is horizontally fixedly connected to the top of the rotating shaft, a guide groove is opened on the beam, a guide block is slidably fitted in the guide groove, and the bottom of the guide block is connected to the mounting plate through a rotating structure;

[0007] A main shaft is rotatably installed in the middle of the mounting plate, a rubber gear is coaxially fixedly connected to the outer wall of the main shaft, slide grooves are provided on both sides of the mounting plate, a slider is slidably fitted in the slide groove, a compression spring is provided in the slide groove to apply elastic force to the slider, the slider is rotatably connected to the end face of the roller, a sandpaper belt is sleeved on the roller and the rubber gear, a motor is fixedly connected to the bottom surface of the mounting plate, a driving end face gear is fixedly connected to the output end of the motor, and driven gears are fixedly connected to both ends of the main shaft, and the driving end face gear matches the driven gear.

[0008] Preferably, the rotating structure includes a connecting plate, which is horizontally fixed to the bottom of the guide block, and both sides of the connecting plate are connected to vertical plates through a buffer structure. The upper and lower sides of the vertical plates are fixed with arc-shaped slide rails, and the slide rails are slidably matched with an arc-shaped rotating table, and the rotating table is fixed to the outer wall of the mounting plate.

[0009] Preferably, the buffer structure includes an extension plate and a connecting block, the extension plate is vertically fixed to the bottom surface of the connecting plate, a slot plate with a slot is fixed to the bottom of the connecting plate, the connecting block is fixed to the outer wall of the vertical plate, a sliding block is fixed to the outer wall of the connecting block, the sliding block slides in the slot of the slot plate, and a support spring is vertically installed in the slot of the slot plate to apply elastic force to the sliding block.

[0010] Preferably, the guide block is provided with a driving structure for driving the rotating table to slide on the slide rail, the driving structure includes a short shaft, the short shaft is rotatably installed in the middle part of the guide block, the axis of the short shaft and the axis of the rotating table are in the same straight line, the two ends of the short shaft vertically pass through the upper and lower sides of the guide block, a connecting plate is fixedly connected to the bottom of the short shaft, a tubular shaft is fixedly connected to the bottom surface of the connecting plate, a sliding rod is slidably fitted in the tubular shaft, and the bottom end of the sliding rod is fixedly connected to the upper surface of the rotating table.

[0011] Preferably, a worm wheel is fixedly connected to the top end of the short shaft, a connecting seat is fixedly connected to the upper surface of the guide block, a worm is rotatably mounted on the connecting seat, and both ends of the worm are fixedly connected to the rotating handle.

[0012] Preferably, a connecting shaft is rotatably mounted on the upper surface of the mounting plate, a pinion is fixedly connected to the outer wall of the connecting shaft, the pinion cooperates with the driven gear, and a fan blade is fixedly connected to the top end of the connecting shaft.

[0013] Preferably, two bearing seats are fixedly connected to the bottom surface of the mounting plate, and extension shafts are rotatably installed in the two bearing seats. The two extension shafts are located on both sides of the main shaft, and the axes of the two extension shafts are on the same straight line. One end of the extension shaft is fixedly connected to a driven end face gear, and the driven end face gear matches the driven gear. The other end of the extension shaft is fixedly connected to an eccentric wheel.

[0014] Preferably, a connecting piece is fixedly connected to the rotating shaft, a hexagon socket bolt is rotatably installed on the connecting piece, a nut seat is threadedly fitted on the hexagon socket bolt, an adjusting spring is fixedly connected to the outer wall of the nut seat, a rotating piece is fixedly connected to the end of the adjusting spring, and the rotating piece is rotatably connected to the outer wall of the tube shaft.

[0015] The metal processing grinder proposed in the present invention has the beneficial effect that when the metal processing grinder provided by the present invention is grinding a cast gear, since the rubber gear made of rubber material itself has a certain deformation ability, when the teeth of the rubber gear enter between the tooth blocks of the gear to be ground, the pressure of the rubber gear on the tooth block will not be too large, thereby preventing the tooth block from being deformed due to excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the working state structure of a metal processing grinder proposed by the present invention Figure 1 .

[0017] Figure 2 The present invention is a front view of a metal processing grinder proposed by the present invention.

[0018] Figure 3 A metal processing grinder proposed by the present invention Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 The present invention is a schematic structural diagram of a beam of a metal processing grinding machine.

[0020] Figure 5 A metal processing grinder proposed by the present invention Figure 4 Enlarged view of point B in the middle.

[0021] Figure 6 This is a cross-sectional view of a beam of a metal processing grinding machine proposed by the present invention.

[0022] Figure 7 A metal processing grinder proposed by the present invention Figure 6 Enlarged view of point C in the middle.

[0023] Figure 8 The present invention is a schematic structural diagram of a connecting plate of a metal processing grinder proposed by the present invention.

[0024] Fig. 9 The present invention is a schematic structural diagram of a connecting block of a metal processing grinder proposed by the present invention.

[0025] Fig.10 The present invention is a schematic diagram of the installation structure of an adjusting spring of a metal processing grinder.

[0026] Fig.11 The present invention is a schematic structural diagram of a vertical plate of a metal processing grinder.

[0027] Fig.12 The present invention is a schematic structural diagram of the cooperation between a rotary table and a slide rail of a metal processing grinder.

[0028] Fig.13 The present invention is a schematic structural diagram of a mounting plate of a metal processing grinder proposed by the present invention.

[0029] Fig.14 The present invention is a schematic structural diagram of a sandpaper belt for a metal processing grinder.

[0030] Fig.15 The present invention is a schematic structural diagram of a rubber gear for a metal processing grinder.

[0031] Fig.16 The present invention is a schematic structural diagram of a spindle of a metal processing grinder proposed by the present invention.

[0032] Fig.17 The present invention is a schematic structural diagram of the bottom surface of a mounting plate of a metal processing grinder.

[0033] Fig.18 A metal processing grinder proposed by the present invention Fig.17 Enlarged view of point D in the middle.

[0034] Fig.19 A schematic diagram of the working state structure of a metal processing grinder proposed by the present invention Figure 2 .

[0035] In the figure: 1, base; 2, fixing piece; 3, sliding seat; 4, screw hole; 5, fastening bolt; 6, stud; 7, clamping block; 8, rotating shaft; 9, beam; 10, connecting piece; 11, hexagon socket bolt; 12, nut seat; 13, adjusting spring; 14, rotating piece; 15, pipe shaft; 16, sliding rod; 17, guide groove; 18, guide block; 19, short shaft; 20, worm gear; 21, connecting seat; 22, worm; 23, rotating handle; 24, connecting plate; 25, extension plate; 26, slot plate; 27, Connecting block; 28. Sliding block; 29. ​​Support spring; 30. Vertical plate; 31. Slide rail; 32. Rotating table; 33. Mounting plate; 34. Slide groove; 35. Compression spring; 36. Sliding block; 37. Roller; 38. Sandpaper belt; 39. Main shaft; 40. Driven gear; 41. Rubber gear; 42. Pinion; 43. Connecting shaft; 44. Fan blade; 45. Bearing seat; 46. Driven end gear; 47. Extension shaft; 48. Eccentric wheel; 49. Motor; 50. Active end gear; 51. Connecting plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figure 1-Figure 3 A metal processing grinder comprises a horizontally arranged base 1 and two horizontally arranged mounting plates 33. A clamp is provided on the base 1 to clamp and fix the gear to be ground. The clamp comprises an annular fixing member 2, which is fixed on the upper surface of the base 1. A sliding seat 3 is slidably matched on the fixing member 2. A screw hole 4 is horizontally opened on the sliding seat 3. A fastening bolt 5 is matched with the inner thread of the screw hole 4. A stud 6 is vertically fixed to the upper surface of the sliding seat 3. Two clamping blocks 7 are threadedly matched on the stud 6. The two clamping blocks 7 are arranged at intervals, and the gear to be ground is clamped between the two clamping blocks 7.

[0038] A rotating shaft 8 is rotatably installed in the middle of the base 1, and a beam 9 is horizontally fixedly connected to the top of the rotating shaft 8. A guide groove 17 is opened on the beam 9, and a guide block 18 is slidably fitted in the guide groove 17. The bottom of the guide block 18 is connected to the mounting plate 33 through a rotating structure; the rotating structure includes a connecting plate 51, and the connecting plate 51 is horizontally fixedly connected to the bottom of the guide block 18. The two sides of the connecting plate 51 are connected to the vertical plate 30 through a buffer structure. The upper and lower sides of the vertical plate 30 are fixedly connected with arc-shaped slide rails 31, and the slide rails 31 are slidably fitted with an arc-shaped rotating table 32, and the rotating table 32 is fixed to the outer wall of the mounting plate 33. The buffer structure includes an extension plate 25 and a connecting block 27. The extension plate 25 is vertically fixed to the bottom surface of the connecting plate 51. A slot plate 26 with a slot is fixed to the bottom of the connecting plate 51. The connecting block 27 is fixed to the outer wall of the vertical plate 30. A sliding block 28 is fixed to the outer wall of the connecting block 27. The sliding block 28 is slidably fitted in the slot of the slot plate 26. A support spring 29 is vertically installed in the slot of the slot plate 26 to apply elastic force to the sliding block 28.

[0039] The beam 9 can rotate around the rotating shaft 8 , and the guide block 18 can slide in the guide groove 17 on the beam 9 , so as to adjust the distance between the guide block 18 and the rotating shaft 8 .

[0040] The guide block 18 is connected to the slot plate 26 through the connecting plate 51 and the extension plate 25. The connecting block 27 is slidably fitted in the slot of the slot plate 26 through the sliding block 28. The supporting spring 29 of the slot provides elastic supporting force for the sliding block 28 so that the sliding block 28 is located in the middle of the slot.

[0041] The connecting block 27 is connected to the vertical plate 30 to support the vertical plate 30 . The vertical plate 30 has arc-shaped slide rails 31 fixed to the upper and lower sides. The rotating platform 32 is slidably matched with the slide rails 31 so that the rotating platform 32 can rotate on the slide rails 31 .

[0042] The guide block 18 is provided with a driving structure for driving the rotating table 32 to slide on the slide rail 31. The driving structure includes a short shaft 19, which is rotatably mounted in the middle of the guide block 18. The axis of the short shaft 19 is in the same straight line as the axis of the rotating table 32. The two ends of the short shaft 19 vertically penetrate the upper and lower sides of the guide block 18. A connecting plate 24 is fixedly connected to the bottom of the short shaft 19. The bottom surface of the connecting plate 24 is fixedly connected to the pipe shaft 15. The sliding rod 16 is slidably matched in the pipe shaft 15. The bottom end of the sliding rod 16 is fixedly connected to the upper surface of the rotating table 32. A worm wheel 20 is fixedly connected to the top of the short shaft 19. A connecting seat 21 is fixedly connected to the upper surface of the guide block 18. A worm 22 is rotatably mounted on the connecting seat 21. The two ends of the worm 22 are fixedly connected to the rotating handle 23.

[0043] The staff can drive the worm 22 to rotate by turning the handle 23. The rotation of the worm 22 will drive the connecting plate 24 to rotate through the short shaft 19. The rotation of the connecting plate 24 will drive the rotating table 32 to rotate on the slide rail 31 through the pipe shaft 15 and the slide rod 16. The rotation of the rotating table 32 will drive the mounting plate 33 to rotate, thereby adjusting the direction of the mounting plate 33.

[0044] A main shaft 39 is rotatably installed in the middle of the mounting plate 33, and a rubber gear 41 is coaxially fixedly connected to the outer wall of the main shaft 39. Slide grooves 34 are provided on both sides of the mounting plate 33. Slide blocks 36 are slidably matched in the slide grooves 34. A compression spring 35 is provided in the slide grooves 34 to apply elastic force to the slide blocks 36. The slide blocks 36 are rotatably connected to the end faces of the rollers 37. Sandpaper belts 38 are sleeved on the rollers 37 and the rubber gears 41. The rubber gears 41 can mesh with the gears to be polished. A motor 49 is fixedly connected to the bottom surface of the mounting plate 33, and a driving end face gear 50 is fixedly connected to the output end of the motor 49. Driven gears 40 are fixedly connected to both ends of the main shaft 39, and the driving end face gears 50 match the driven gears 40.

[0045] When the motor 49 is powered on, it will drive the driven gear 40 to rotate through the active end face gear 50. The rotation of the driven gear 40 will drive the main shaft 39 to rotate. The rotation of the main shaft 39 will drive the rubber gear 41 to rotate. The surface of the rubber gear 41 is covered with a sandpaper belt 38. When the rubber gear 41 is engaged with the gear to be polished, the tooth block on the rubber gear 41 will press the sandpaper belt 38 between the tooth blocks of the gear to be polished so as to polish the tooth blocks of the gear to be polished.

[0046] The compression spring 35 applies elastic force to the sandpaper belt 38 through the slider 36 and the roller 37, so that the sandpaper belt 38 is kept at a suitable tension.

[0047] like Figure 13-Figure 17 As shown, a connecting shaft 43 is rotatably mounted on the upper surface of the mounting plate 33 , a pinion 42 is fixedly connected to the outer wall of the connecting shaft 43 , the pinion 42 cooperates with the driven gear 40 , and a fan blade 44 is fixedly connected to the top end of the connecting shaft 43 .

[0048] Through the transmission of the main shaft 39, the driven gear 40 located at the end of the main shaft 39 will also rotate. During the rotation of the driven gear 40, the driven gear 40 will drive the connecting shaft 43 to rotate through the pinion 42. The rotation of the connecting shaft 43 will drive the fan blades 44 to rotate. During the rotation of the fan blades 44, the air flow will flow downward, thereby blowing off the grinding chips generated during the grinding process of the tooth block.

[0049] like Fig.17 and Fig.18As shown, two bearing seats 45 are fixedly connected to the bottom surface of the mounting plate 33, and extension shafts 47 are rotatably installed in the two bearing seats 45. The two extension shafts 47 are located on both sides of the main shaft 39, and the axes of the two extension shafts 47 are on the same straight line. One end of the extension shaft 47 is fixedly connected to a driven end face gear 46, and the driven end face gear 46 matches the driven gear 40. The other end of the extension shaft 47 is fixedly connected to an eccentric wheel 48.

[0050] The rotation of the driven gear 40 drives the driven end face gear 46 to rotate. The rotation of the driven end face gear 46 drives the extension shaft 47 to rotate. The rotation of the extension shaft 47 drives the eccentric wheel 48 to rotate. The eccentric wheel 48 generates vibration during rotation, thereby driving the rubber gear 41 to vibrate.

[0051] Since the two extension shafts 47 are symmetrically arranged on both sides of the main shaft 39, when the driven gear 40 drives the extension shafts 47 to rotate through the driven end face gear 46, the rotation directions of the two extension shafts 47 are opposite, so that the rotation directions of the two eccentric wheels 48 are opposite. Since the rotation speeds of the two eccentric wheels 48 are the same, the two eccentric wheels 48 will only cause the rubber gear 41 to vibrate in the vertical direction, and the rubber gear 41 will drive the sandpaper belt 38 to generate amplitude in the vertical direction, so that the sandpaper belt 38 can grind the tooth block of the gear to be grinded in the vertical direction at the same time.

[0052] A connecting piece 10 is fixedly connected to the rotating shaft 8, and a hexagon socket bolt 11 is rotatably installed on the connecting piece 10. The hexagon socket bolt 11 is threadedly matched with a nut seat 12. An adjusting spring 13 is fixedly connected to the outer wall of the nut seat 12. A rotating piece 14 is fixedly connected to the end of the adjusting spring 13. The rotating piece 14 is rotatably connected to the outer wall of the pipe shaft 15.

[0053] The hexagon socket bolt 11 can be driven to rotate by a wrench, and the rotation of the hexagon socket bolt 11 will drive the nut seat 12 to move linearly, and the linear movement of the nut seat 12 can change the elastic force and direction of the adjustment spring 13.

[0054] Working principle and workflow:

[0055] like Figure 1 and Fig.19 As shown, the steps are as follows:

[0056] Step 1: According to the type of gear to be polished, the handle 23 is driven to rotate. The rotation of the handle 23 drives the worm 22 to rotate. The rotation of the worm 22 drives the connecting plate 24 to rotate through the short shaft 19. The rotation of the connecting plate 24 drives the rotating table 32 to rotate on the slide rail 31 through the pipe shaft 15 and the slide rod 16. The rotation of the rotating table 32 drives the mounting plate 33 to rotate, thereby adjusting the direction of the rubber gear 41 so that the rubber gear 41 faces the tooth block of the gear to be polished.

[0057] Step 2: Use a wrench to drive the hexagon socket bolt 11 to rotate. The rotation of the hexagon socket bolt 11 will drive the nut seat 12 to move linearly. The linear movement of the nut seat 12 can change the elastic force of the adjusting spring 13. The elastic force of the adjusting spring 13 will eventually be transmitted to the rubber gear 41, so that the rubber gear 41 can always rest against the gear to be polished.

[0058] Step 3: Start the motor 49. After the motor 49 is powered on, it will drive the driven gear 40 to rotate through the active end gear 50. The rotation of the driven gear 40 will drive the main shaft 39 to rotate. The rotation of the main shaft 39 will drive the rubber gear 41 to rotate. The surface of the rubber gear 41 is covered with a sandpaper belt 38. When the rubber gear 41 is engaged with the gear to be polished, the tooth block on the rubber gear 41 will press the sandpaper belt 38 between the tooth blocks of the gear to be polished, so as to polish the tooth blocks of the gear to be polished.

[0059] The rotation of the driven gear 40 drives the driven end face gear 46 to rotate, and the rotation of the driven end face gear 46 drives the extension shaft 47 to rotate, and the rotation of the extension shaft 47 drives the eccentric wheel 48 to rotate. The eccentric wheel 48 generates vibration during its rotation, thereby driving the rubber gear 41 to vibrate. Since the two extension shafts 47 are symmetrically arranged on both sides of the main shaft 39, when the driven gear 40 drives the extension shaft 47 to rotate through the driven end face gear 46, the rotation directions of the two extension shafts 47 are opposite, so that the rotation directions of the two eccentric wheels 48 are opposite. Since the rotation speeds of the two eccentric wheels 48 are the same, the two eccentric wheels 48 only cause the rubber gear 41 to vibrate in the vertical direction, and the rubber gear 41 drives the sandpaper belt 38 to generate amplitude in the vertical direction, so that the sandpaper belt 38 simultaneously grinds the tooth block of the gear to be grinded in the vertical direction.

[0060] Since the rubber gear 41 is meshed with the gear to be polished, the rubber gear 41 will also move along the gear to be polished during its rotation to polish any tooth block of the gear to be polished.

[0061] Through the transmission of the main shaft 39, the driven gear 40 located at the end of the main shaft 39 will also rotate. During the rotation of the driven gear 40, the driven gear 40 will drive the connecting shaft 43 to rotate through the pinion 42. The rotation of the connecting shaft 43 will drive the fan blades 44 to rotate. During the rotation of the fan blades 44, the air flow will flow downward, thereby blowing off the grinding chips generated during the grinding process of the tooth block.

[0062] Compared with the prior art, when the metal processing grinder provided by the present invention is grinding a cast gear, since the rubber gear 41 made of rubber material itself has a certain deformation ability, when the teeth of the rubber gear 41 enter between the tooth blocks of the gear to be ground, the rubber gear 41 will not exert too much pressure on the tooth blocks, thereby preventing the tooth blocks from being deformed due to excessive force.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal processing grinding machine, comprising a horizontally arranged base (1) and two horizontally arranged mounting plates (33), wherein a rotating shaft (8) is rotatably mounted in the middle of the base (1), and a beam (9) is horizontally fixedly connected to the top of the rotating shaft (8), characterized in that: in: The beam (9) is provided with a guide groove (17), a guide block (18) is slidably fitted in the guide groove (17), and the bottom of the guide block (18) is connected to the mounting plate (33) via a rotating structure; A main shaft (39) is rotatably mounted in the middle of the mounting plate (33), a rubber gear (41) is coaxially fixedly connected to the outer wall of the main shaft (39), a slide groove (34) is provided on both sides of the mounting plate (33), a slider (36) is slidably matched in the slide groove (34), a compression spring (35) is provided in the slide groove (34) to apply elastic force to the slider (36), the slider (36) is rotatably connected to the end surface of the roller (37), the roller (37) and the rubber gear (41) are sleeved with a sandpaper belt (38), a motor (49) is fixedly connected to the bottom surface of the mounting plate (33), a driving end face gear (50) is fixedly connected to the output end of the motor (49), and driven gears (40) are fixedly connected to both ends of the main shaft (39), and the driving end face gear (50) matches the driven gear (40); The rotating structure comprises a connecting plate (51), wherein the connecting plate (51) is horizontally fixed to the bottom of the guide block (18), and both sides of the connecting plate (51) are connected to the vertical plates (30) via a buffer structure, and both upper and lower sides of the vertical plates (30) are fixedly connected to arc-shaped slide rails (31), and the slide rails (31) are slidably matched with an arc-shaped rotating platform (32), and the rotating platform (32) is fixedly connected to the outer wall of the mounting plate (33); The buffer structure comprises an extension plate (25) and a connecting block (27), wherein the extension plate (25) is vertically fixed to the bottom surface of the connecting plate (51), a slot plate (26) with a slot is fixed to the bottom of the connecting plate (51), the connecting block (27) is fixed to the outer wall of the vertical plate (30), a sliding block (28) is fixed to the outer wall of the connecting block (27), the sliding block (28) is slidably fitted in the slot of the slot plate (26), and a supporting spring (29) is vertically installed in the slot of the slot plate (26) to apply elastic force to the sliding block (28); The guide block (18) is provided with a driving structure for driving the rotating table (32) to slide on the slide rail (31), and the driving structure includes a short shaft (19), the short shaft (19) is rotatably mounted in the middle of the guide block (18), the axis of the short shaft (19) and the axis of the rotating table (32) are on the same straight line, and the two ends of the short shaft (19) vertically penetrate the upper and lower sides of the guide block (18), and a connecting plate (24) is fixedly connected to the bottom of the short shaft (19), and a tube shaft (15) is fixedly connected to the bottom surface of the connecting plate (24), and a sliding rod (16) is slidably matched in the tube shaft (15), and the bottom end of the sliding rod (16) is fixedly connected to the upper surface of the rotating table (32).

2. The metalworking grinding machine according to claim 1, characterized in that: A worm wheel (20) is fixedly connected to the top end of the short shaft (19), a connecting seat (21) is fixedly connected to the upper surface of the guide block (18), a worm (22) is rotatably mounted on the connecting seat (21), and both ends of the worm (22) are fixedly connected to a rotating handle (23).

3. The metalworking grinding machine according to claim 2, characterized in that: A connecting shaft (43) is rotatably mounted on the upper surface of the mounting plate (33); a pinion gear (42) is fixedly connected to the outer wall of the connecting shaft (43); the pinion gear (42) cooperates with the driven gear (40); and a fan blade (44) is fixedly connected to the top end of the connecting shaft (43).

4. The metalworking grinding machine according to claim 3, characterized in that: Two bearing seats (45) are fixedly connected to the bottom surface of the mounting plate (33), and an extension shaft (47) is rotatably mounted in each of the two bearing seats (45). The two extension shafts (47) are located on both sides of the main shaft (39), and the axes of the two extension shafts (47) are on the same straight line. One end of the extension shaft (47) is fixedly connected to a driven end face gear (46), and the driven end face gear (46) matches the driven gear (40). The other end of the extension shaft (47) is fixedly connected to an eccentric wheel (48).

5. The metalworking grinding machine according to any one of claims 2 to 4, characterized in that: A connecting piece (10) is fixedly connected to the rotating shaft (8), a hexagon socket bolt (11) is rotatably mounted on the connecting piece (10), a nut seat (12) is threadedly engaged on the hexagon socket bolt (11), an adjusting spring (13) is fixedly connected to the outer wall of the nut seat (12), an end of the adjusting spring (13) is fixedly connected to a rotating piece (14), and the rotating piece (14) is rotatably connected to the outer wall of the pipe shaft (15).

Images