Cutter sharpening device for twist drill machining

Abstract

The invention relates to the technical field of drill bit grinding devices, and provides an edge grinding device for twist drill machining, which comprises a base, grips are uniformly in threaded connection with two sides of the base, a moving structure is fixedly mounted on one side of the top end of the base, and a feeding structure is fixedly mounted on the other side of the top end of the base. According to the invention, by arranging the rotating structure and rotating the fixed handle, the fixed handle can drive the compression bolt to rotate, so that the fixed handle is separated from the rotating seat, at the moment, the rotating seat is rotated, the rotating seat can rotate around the limiting ring, and the rotating angle of the rotating seat can be metered according to the first dial and the second dial; and after a rotating seat is adjusted to a proper angle, a fixed handle is rotated to fix the rotating seat at the top end of a second cover plate, so that the function of conveniently and accurately adjusting the angle is realized, and the machining error of the edge grinding device for machining the twist drill during use is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of drill grinding devices, in particular to a blade grinding device for twist drill processing. Background Art

[0002] Twist drill is the most commonly used tool for hole processing. During the machining process, the cutting edge of the twist drill will wear out over time. The quality of the cutting edge directly affects the accuracy and efficiency of drilling. The cutting edge needs to be sharpened in time, so a twist drill sharpening device is used.

[0003] To this end, the patent with the authorization announcement number CN115229569B discloses an intelligent sharpening device for a straight shank twist drill, comprising a base, a clamping mechanism and a grinding mechanism, wherein the clamping mechanism and the grinding mechanism are arranged at the upper end of the base, a grinding disc is arranged in the grinding mechanism, the clamping mechanism is used to clamp the drill bit, and the grinding mechanism is used to drive the grinding disc to grind the drill bit and compensate the worn part of the grinding disc in real time during the grinding process to improve the processing accuracy;

[0004] The above-mentioned intelligent sharpening device for straight-shank twist drills can compensate for the worn part of the grinding disc in real time during the process of grinding the drill bit, so that the grinding disc can always process the drill bit with a higher processing accuracy, and change the angle at which the grinding disc grinds the drill bit of the twist drill by adjusting the angle between the first mounting arm and the second mounting arm relative to the axis of the twist drill. However, the device is not convenient for fine-tuning the grinding angle of the drill bit when in use, resulting in a large angle adjustment error during use. Summary of the invention

[0005] The purpose of the present invention is to provide a twist drill grinding device to solve the defect that the angle adjustment error of the existing twist drill grinding device is relatively large.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a sharpening device for twist drill processing, comprising a base;

[0007] The two sides of the base are evenly threadedly connected with a grip, a moving structure is fixedly installed on one side of the top of the base, and a feeding structure is fixedly installed on the other side of the top of the base, and the feeding structure includes a second fixed seat, a second slide groove, a second slider, a second threaded rod, a second handle and a second cover plate, the second fixed seat is fixedly installed on the side of the top of the base away from the moving structure, the top of the second fixed seat is provided with a second slide groove, the second slide groove is provided with a second slider inside, the second slider is penetrated by a second threaded rod inside, one end of the second threaded rod away from the first fixed seat extends to the outside of the second fixed seat and is sleeved and fixed with the second handle, a second cover plate is provided on the top of the second fixed seat, a control box is fixedly installed on the top of the moving structure, a grinding motor is fixedly installed on the top of the control box, a first dust cover is installed on the outer wall of one end of the grinding motor, the output end of the grinding motor passes through the first dust cover and is fixedly installed with a grinding wheel, and a second dust cover is movably installed on the outer side of the first dust cover at one end of the grinding wheel;

[0008] A rotating structure is movably installed at the top of the feeding structure, and the rotating structure includes a rotating seat, a first dial, a second dial, a limiting ring, a stepped hole, a clamping bolt and a fixed handle. The rotating seat is arranged at the top of the second cover plate, and the rotating seat is arranged at the top of the second cover plate. The first dial is inlaid on the outer wall of the rotating seat away from the moving structure, and the second dial is inlaid on the top of the second cover plate on the side of the first dial. A stepped hole is arranged at the middle position inside the rotating seat, and a limiting ring is arranged at the bottom of the stepped hole. A clamping bolt passes through the interior of the limiting ring, and the top of the clamping bolt extends to the outside of the rotating seat and is fixedly installed with a fixed handle;

[0009] A rotating structure is movably mounted on one side of the top of the rotating seat, a fine-tuning structure is fixedly mounted on one side of the rotating structure away from the rotating seat, and a supporting structure is fixedly mounted on one side of the fine-tuning structure away from the rotating structure.

[0010] Preferably, the movable structure includes a first fixed seat, a first slide groove, a first slider, a first threaded rod, a first handle, a first cover plate and a baffle. The first fixed seat is fixedly installed on one side of the top of the base. A first slide groove is opened on the top of the first fixed seat. A first slider is arranged inside the first slide groove. A first threaded rod runs through the inside of the first slider. One end of the first threaded rod extends to the outside of the first fixed seat and is sleeved and fixed with the first handle. A first cover plate is arranged on the side of the top of the first fixed seat close to the first handle. A baffle is fixedly installed on the side of the first cover plate at the top of the first fixed seat close to the grinding wheel.

[0011] Preferably, the top end of the first slider is fixedly connected to the bottom end of the first cover plate, the first slider is threadedly connected to the first threaded rod, one end of the first threaded rod extends to the interior of the first fixed seat and is rotatably connected to the first fixed seat, and the top end of the first cover plate is fixedly connected to the bottom end of the control box by bolts.

[0012] Preferably, the top end of the second slider is fixedly connected to the bottom end of the second cover plate, the second slider is threadedly connected to the second threaded rod, one end of the second threaded rod extends to the interior of the second fixed seat and is rotatably connected to the second fixed seat, and the central axis of the second threaded rod is perpendicular to the central axis of the first threaded rod.

[0013] Preferably, the bottom end of the limiting ring is fixedly connected to the top end of the second cover plate, the bottom end of the clamping bolt extends to the interior of the second cover plate and is threadedly connected to the second cover plate, and the bottom end of one side of the fixed handle extends to the interior of the stepped hole and contacts the inner wall of the rotating seat.

[0014] Preferably, the rotating structure includes a rotating seat, a positioning hole and a positioning bolt. The rotating seat is rotatably installed on one side of the top of the rotating seat close to the baffle. Positioning holes are evenly opened at the edge of the top of the rotating seat. A positioning bolt is threadedly connected to one side of the rotating seat at one end of the positioning hole.

[0015] Preferably, the positioning holes are distributed at equal intervals around the rotating axis of the rotating seat, and one end of the positioning bolt passes through the rotating seat, extends to the inside of the positioning hole, and is threadedly connected to the rotating seat.

[0016] Preferably, the fine-tuning structure includes a fine-tuning seat, a fine-tuning block and a locking nut. The fine-tuning seat is fixedly installed on the bottom side of the rotating seat away from the rotating seat. A fine-tuning block is provided on one side of the top of the fine-tuning seat, and a locking nut runs through the interior of the fine-tuning block.

[0017] Preferably, one end of the fine-tuning block and the inner side wall of the fine-tuning seat are both arc-shaped, scale lines are evenly arranged on one side of the arc shape at the top of the fine-tuning block, scale lines are arranged at the middle position of the arc shape at the top of the fine-tuning seat, and the bottom end of the locking nut extends to the interior of the fine-tuning seat and is threadedly connected to the fine-tuning seat.

[0018] Preferably, the supporting structure includes a fixed plate, a gantry, a movable plate, a clamping handle, a third threaded rod and a V-groove, one end of the fixed plate is fixedly installed on the side of the fine-tuning block away from the fine-tuning seat by bolts, the gantry is fixedly installed on the outer wall of the fixed plate on the side away from the fine-tuning block, the movable plate is arranged on the inner side of the gantry, the third threaded rod is threadedly connected to the side of the gantry away from the fixed plate, the clamping handle is fixedly installed on one end of the third threaded rod, the other end of the third threaded rod extends to the interior of the movable plate and is rotatably connected to the movable plate, and the adjacent surfaces of the fixed plate and the movable plate are provided with V-grooves.

[0019] The invention provides a twist drill grinding device, which has the advantages of:

[0020] By providing a rotating structure, the fixed handle is rotated, and the fixed handle drives the clamping bolt to rotate, so that the fixed handle and the rotating seat are separated from each other. At this time, the rotating seat is rotated, and the rotating seat rotates around the limit ring. The rotation angle of the rotating seat can be measured according to the first dial and the second dial. After the rotating seat is adjusted to a suitable angle, the fixed handle is rotated to fix the rotating seat on the top of the second cover plate, thereby realizing the function of the device to facilitate accurate angle adjustment, thereby reducing the processing error of the twist drill processing sharpening device when in use;

[0021] Furthermore, by rotating the locking nut with a hexagonal wrench, the fine-tuning block can rotate around the locking nut on one side of the fine-tuning seat, and the grinding angle can be fine-tuned through the scale lines on the fine-tuning seat and the top of the fine-tuning block, and then tightening the locking nut to fix the fine-tuning seat and the fine-tuning block to each other, the device realizes the function of facilitating fine-tuning of the angle, and further improves the accuracy of the twist drill processing sharpening device when in use;

[0022] Furthermore, by rotating the positioning bolt, one end of the positioning bolt is moved to the outside of the positioning hole. At this time, the rotating seat is rotated to make the positioning bolt dock with the positioning holes at different positions. The elevation angle of the drill bit can be adjusted to meet the multi-angle grinding work of the drill bit, thereby realizing the function of facilitating the adjustment of the elevation angle of the drill bit, thereby improving the applicability of the twist drill processing grinding device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view schematic diagram of the present invention;

[0024] Figure 2 It is a rear view schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of a front cross-section of the mobile structure of the present invention;

[0026] Figure 4 It is a schematic diagram of a front cross-section of the feeding structure of the present invention from a first viewing angle;

[0027] Figure 5 It is a schematic diagram of a front cross-section of the feeding structure of the present invention from a second viewing angle;

[0028] Figure 6 For the present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0029] Figure 7 It is a front exploded schematic diagram of the rotating structure of the present invention;

[0030] Figure 8 It is a rear exploded schematic diagram of the rotating structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the front view of the fine-tuning structure of the present invention;

[0032] Fig.10 It is a top view schematic diagram of the fine-tuning structure of the present invention.

[0033] Explanation of the reference numerals in the figure: 1. base; 11. handle; 2. moving structure; 21. first fixed seat; 22. first slide groove; 23. first slider; 24. first threaded rod; 25. first handle; 26. first cover plate; 27. baffle; 3. control box; 4. grinding motor; 41. first dust cover; 42. second dust cover; 43. grinding wheel; 5. feeding structure; 51. second fixed seat; 52. second slide groove; 53. second slider; 54. second threaded rod; 55. second handle; 56. second Cover plate; 6. Rotating structure; 61. Rotating seat; 62. First scale plate; 63. Second scale plate; 64. Limiting ring; 65. Step hole; 66. Clamping bolt; 67. Fixed handle; 7. Rotating structure; 71. Rotating seat; 72. Positioning hole; 73. Positioning bolt; 8. Fine-tuning structure; 81. Fine-tuning seat; 82. Fine-tuning block; 83. Locking nut; 9. Supporting structure; 91. Fixed plate; 92. Gantry; 93. Moving plate; 94. Clamping handle; 95. Third threaded rod; 96. V-groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 10 The present invention provides a twist drill grinding device, which includes a base 1.

[0036] Reference Figure 2 and Figure 3 As shown, both sides of the base 1 are evenly threadedly connected with the handle 11, and a mobile structure 2 is fixedly installed on one side of the top of the base 1. The mobile structure 2 includes a first fixed seat 21, a first slide groove 22, a first slider 23, a first threaded rod 24, a first handle 25, a first cover plate 26 and a baffle 27. The first fixed seat 21 is fixedly installed on one side of the top of the base 1. The top of the first fixed seat 21 is provided with a first slide groove 22, and the first slider 23 is arranged inside the first slide groove 22. The first threaded rod 24 is penetrated inside the first slider 23, and one end of the first threaded rod 24 extends to the first A first handle 25 is sleeved and fixed to the outside of the fixed seat 21, a first cover plate 26 is provided on the side of the top of the first fixed seat 21 close to the first handle 25, a baffle 27 is fixedly installed on the side of the first cover plate 26 at the top of the first fixed seat 21 close to the grinding wheel 43, the top of the first slider 23 is fixedly connected to the bottom end of the first cover plate 26, the first slider 23 and the first threaded rod 24 are threadedly connected, one end of the first threaded rod 24 extends to the inside of the first fixed seat 21 and is rotatably connected to the first fixed seat 21, and the top of the first cover plate 26 is fixedly connected to the bottom end of the control box 3 by bolts.

[0037] By rotating the first handle 25, the first handle 25 will drive the first threaded rod 24 to rotate, so that the first threaded rod 24 drives the first slider 23 to move inside the first slide groove 22, and then the first slider 23 drives the first cover plate 26 to move, and the first cover plate 26 drives the grinding wheel 43 above it to move, so as to facilitate tool alignment during grinding and compensate for the wear of the grinding wheel 43. Under the action of the baffle 27, grinding waste is prevented from entering the first slide groove 22.

[0038] Reference Figure 2 , Figure 4 and Figure 5 As shown, a feeding structure 5 is fixedly installed on the other side of the top of the base 1, and the feeding structure 5 includes a second fixed seat 51, a second slide groove 52, a second slider 53, a second threaded rod 54, a second handle 55 and a second cover plate 56. The second fixed seat 51 is fixedly installed on the side of the top of the base 1 away from the moving structure 2. A second slide groove 52 is opened on the top of the second fixed seat 51, and a second slider 53 is arranged inside the second slide groove 52. A second threaded rod 54 runs through the inside of the second slider 53. One end of the second threaded rod 54 away from the first fixed seat 21 extends to the outside of the second fixed seat 51 and is sleeved and fixed with the second handle 55. A second cover plate 56 is arranged on the top of the second fixed seat 51. The top of the second slider 53 is fixedly connected to the bottom end of the second cover plate 56, the second slider 53 is threadedly connected to the second threaded rod 54, one end of the second threaded rod 54 extends to the inside of the second fixed seat 51 and is rotatably connected to the second fixed seat 51, and the central axis of the second threaded rod 54 is perpendicular to the central axis of the first threaded rod 24.

[0039] By rotating the second handle 55, the second handle 55 will drive the second threaded rod 54 to rotate, so that the second threaded rod 54 drives the second slider 53 to move inside the second slide groove 52, and then the second slider 53 drives the second cover plate 56 to move, and the drill bit above it is driven to move through the second cover plate 56, so as to provide drill bit feed amount during grinding.

[0040] Reference Figure 1 , Figure 2 , Figure 4-Figure 6 As shown, a control box 3 is fixedly installed on the top of the mobile structure 2, a grinding motor 4 is fixedly installed on the top of the control box 3, a first dust cover 41 is installed on the outer wall of one end of the grinding motor 4, the output end of the grinding motor 4 passes through the first dust cover 41 and is fixedly installed with a grinding wheel 43, a second dust cover 42 is movably installed on the outer side of the first dust cover 41 at one end of the grinding wheel 43, a rotating structure 6 is movably installed on the top of the feeding structure 5, the rotating structure 6 includes a rotating seat 61, a first dial plate 62, a second dial plate 63, a limiting ring 64, a stepped hole 65, a clamping bolt 66 and a fixed handle 67, the rotating seat 61 is arranged at the top of the second cover plate 56, the rotating seat 61 is arranged at the top of the second cover plate 56, and the rotating seat 61 is far A first dial 62 is inlaid on the outer wall on the side away from the movable structure 2, and a second dial 63 is inlaid on the top of the second cover plate 56 on the side of the first dial 62. A stepped hole 65 is provided at the middle position inside the rotating seat 61, and a limiting ring 64 is provided at the bottom of the stepped hole 65. A clamping bolt 66 passes through the inside of the limiting ring 64, and the top of the clamping bolt 66 extends to the outside of the rotating seat 61 and is fixedly installed with a fixed handle 67. The bottom end of the limiting ring 64 is fixedly connected to the top of the second cover plate 56, and the bottom end of the clamping bolt 66 extends to the inside of the second cover plate 56 and is threadedly connected to the second cover plate 56. The bottom end of one side of the fixed handle 67 extends to the inside of the stepped hole 65 and conflicts with the inner side wall of the rotating seat 61.

[0041] By rotating the fixed handle 67, the fixed handle 67 will drive the clamping bolt 66 to rotate, so that the fixed handle 67 and the rotating seat 61 are separated from each other. At this time, by rotating the rotating seat 61, the rotating seat 61 will rotate around the limiting ring 64. The rotation angle of the rotating seat 61 can be measured according to the first dial 62 and the second dial 63. After adjusting the rotating seat 61 to a suitable angle, the fixed handle 67 is rotated to fix the rotating seat 61 on the top of the second cover plate 56.

[0042] Reference Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, a rotating structure 7 is movably installed on one side of the top of the rotating seat 61, and the rotating structure 7 includes a rotating seat 71, a positioning hole 72 and a positioning bolt 73. The rotating seat 71 is rotatably installed on one side of the top of the rotating seat 61 close to the baffle 27. Positioning holes 72 are evenly opened at the edge position of the top of the rotating seat 71. One side of the rotating seat 61 at one end of the positioning hole 72 is threadedly connected with a positioning bolt 73. The positioning holes 72 are evenly spaced around the rotating axis of the rotating seat 71. One end of the positioning bolt 73 passes through the rotating seat 61 and extends to the inside of the positioning hole 72 and is threadedly connected to the rotating seat 71.

[0043] Rotate the positioning bolt 73 to move one end of the positioning bolt 73 to the outside of the positioning hole 72. At this time, rotate the rotating seat 71 to make the positioning bolt 73 dock with the positioning holes 72 at different positions, so as to adjust the elevation angle of the drill bit, thereby meeting the multi-angle grinding work of the drill bit.

[0044] Reference Figure 1 , Fig. 9 and Fig.10 As shown, a fine-tuning structure 8 is fixedly installed on the side of the rotating structure 7 away from the rotating seat 61, and the fine-tuning structure 8 includes a fine-tuning seat 81, a fine-tuning block 82 and a locking nut 83. The fine-tuning seat 81 is fixedly installed on the side of the bottom of the rotating seat 71 away from the rotating seat 61, and a fine-tuning block 82 is provided on one side of the top of the fine-tuning seat 81. A locking nut 83 runs through the interior of the fine-tuning block 82, and one end of the fine-tuning block 82 and the inner side wall of the fine-tuning seat 81 are both in an arc shape, and scale lines are evenly arranged on one side of the arc shape at the top of the fine-tuning block 82, and scale lines are arranged at the middle position of the arc shape at the top of the fine-tuning seat 81. The bottom end of the locking nut 83 extends to the interior of the fine-tuning seat 81 and is threadedly connected to the fine-tuning seat 81.

[0045] By turning the locking nut 83 with a hexagonal wrench, the fine-tuning block 82 can rotate around the locking nut 83 on one side of the fine-tuning seat 81, and the grinding angle can be fine-tuned through the scale lines on the top of the fine-tuning seat 81 and the fine-tuning block 82. Then, tighten the locking nut 83 to fix the fine-tuning seat 81 and the fine-tuning block 82 to each other, which is convenient for fine-tuning the drill grinding angle and angle compensation of the rotating structure 6 during use.

[0046] Reference Figure 1 , Fig. 9 and Fig.10As shown, a supporting structure 9 is fixedly installed on the side of the fine-tuning structure 8 away from the rotating structure 7, and the supporting structure 9 includes a fixed plate 91, a gantry 92, a movable plate 93, a clamping handle 94, a third threaded rod 95 and a V-shaped groove 96. One end of the fixed plate 91 is fixedly installed on the side of the fine-tuning block 82 away from the fine-tuning seat 81 by bolts, and a gantry 92 is fixedly installed on the outer wall of the fixed plate 91 away from the fine-tuning block 82. A movable plate 93 is arranged on the inner side of the gantry 92, and a third threaded rod 95 is threadedly connected to the side of the gantry 92 away from the fixed plate 91. A clamping handle 94 is fixedly installed on one end of the third threaded rod 95, and the other end of the third threaded rod 95 extends to the interior of the movable plate 93 and is rotatably connected to the movable plate 93. V-shaped grooves 96 are provided on the adjacent surfaces of the fixed plate 91 and the movable plate 93.

[0047] Place the drill bit between the V-grooves 96 so that one end of the drill bit points to the grinding wheel 43, and rotate the clamping handle 94. The clamping handle 94 will drive the third threaded rod 95 to rotate, so that the third threaded rod 95 drives the movable plate 93 to move, so that the movable plate 93 and the fixed plate 91 clamp and fix the drill bit through the V-groove 96.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sharpening device for twist drill processing, comprising a base (1); Features: The two sides of the base (1) are evenly threadedly connected with handles (11); a moving structure (2) is fixedly installed on one side of the top of the base (1); a feeding structure (5) is fixedly installed on the other side of the top of the base (1); the feeding structure (5) comprises a second fixed seat (51), a second slide groove (52), a second slider (53), a second threaded rod (54), a second handle (55) and a second cover plate (56); the second fixed seat (51) is fixedly installed on the side of the top of the base (1) away from the moving structure (2); a second slide groove (52) is provided on the top of the second fixed seat (51); a second slider (53) is provided inside the second slide groove (52); the inside of the second slider (53) is penetrated by A second threaded rod (54) is passed through, one end of the second threaded rod (54) away from the first fixed seat (21) extends to the outside of the second fixed seat (51) and is sleeved and fixed with a second handle (55), a second cover plate (56) is arranged at the top of the second fixed seat (51), a control box (3) is fixedly installed at the top of the mobile structure (2), a grinding motor (4) is fixedly installed at the top of the control box (3), a first dust cover (41) is installed on the outer wall of one end of the grinding motor (4), an output end of the grinding motor (4) passes through the first dust cover (41) and is fixedly installed with a grinding wheel (43), and a second dust cover (42) is movably installed on the outer side of the first dust cover (41) at one end of the grinding wheel (43); The top of the feeding structure (5) is movably provided with a rotating structure (6), and the rotating structure (6) comprises a rotating seat (61), a first scale plate (62), a second scale plate (63), a limiting ring (64), a stepped hole (65), a clamping bolt (66) and a fixed handle (67). The rotating seat (61) is arranged at the top of the second cover plate (56), and the rotating seat (61) is arranged at the top of the second cover plate (56). The rotating seat (61) is away from the outer side of the moving structure (2). A first scale plate (62) is inlaid on the wall, a second scale plate (63) is inlaid on the top of a second cover plate (56) on one side of the first scale plate (62), a stepped hole (65) is provided at a middle position inside the rotating seat (61), a limiting ring (64) is provided at the bottom of the stepped hole (65), a clamping bolt (66) penetrates the inside of the limiting ring (64), and the top of the clamping bolt (66) extends to the outside of the rotating seat (61) and is fixedly installed with a fixed handle (67); A rotating structure (7) is movably mounted on one side of the top of the rotating seat (61), a fine-tuning structure (8) is fixedly mounted on the side of the rotating structure (7) away from the rotating seat (61), and a supporting structure (9) is fixedly mounted on the side of the fine-tuning structure (8) away from the rotating structure (7).

2. A twist drill grinding device according to claim 1, characterized in that: The movable structure (2) comprises a first fixed seat (21), a first slide groove (22), a first slider (23), a first threaded rod (24), a first handle (25), a first cover plate (26) and a baffle plate (27); the first fixed seat (21) is fixedly mounted on one side of the top of the base (1); a first slide groove (22) is provided on the top of the first fixed seat (21); a first slider (23) is provided inside the first slide groove (22); a first threaded rod (24) runs through the inside of the first slider (23); one end of the first threaded rod (24) extends to the outside of the first fixed seat (21) and is sleeved and fixed with the first handle (25); a first cover plate (26) is provided on one side of the top of the first fixed seat (21) close to the first handle (25); a baffle plate (27) is fixedly mounted on one side of the first cover plate (26) on the top of the first fixed seat (21) close to the grinding wheel (43).

3. A twist drill grinding device according to claim 2, characterized in that: The top end of the first slider (23) is fixedly connected to the bottom end of the first cover plate (26); the first slider (23) is threadedly connected to the first threaded rod (24); one end of the first threaded rod (24) extends into the interior of the first fixed seat (21) and is rotatably connected to the first fixed seat (21); the top end of the first cover plate (26) is fixedly connected to the bottom end of the control box (3) by bolts.

4. A twist drill grinding device according to claim 2, characterized in that: The top end of the second sliding block (53) is fixedly connected to the bottom end of the second cover plate (56), the second sliding block (53) is threadedly connected to the second threaded rod (54), one end of the second threaded rod (54) extends into the interior of the second fixed seat (51) and is rotatably connected to the second fixed seat (51), and the central axis of the second threaded rod (54) and the central axis of the first threaded rod (24) are perpendicular to each other.

5. The twist drill grinding device according to claim 1, characterized in that: The bottom end of the limiting ring (64) is fixedly connected to the top end of the second cover plate (56), the bottom end of the clamping bolt (66) extends to the inside of the second cover plate (56) and is threadedly connected to the second cover plate (56), and the bottom end of one side of the fixed handle (67) extends to the inside of the stepped hole (65) and contacts the inner wall of the rotating seat (61).

6. A twist drill grinding device according to claim 2, characterized in that: The rotating structure (7) comprises a rotating seat (71), a positioning hole (72) and a positioning bolt (73); the rotating seat (71) is rotatably mounted on a side of the top of the rotating seat (61) close to the baffle (27); positioning holes (72) are evenly arranged at the edge of the top of the rotating seat (71); and a positioning bolt (73) is threadedly connected to one side of the rotating seat (61) at one end of the positioning hole (72).

7. A twist drill grinding device according to claim 6, characterized in that: The positioning holes (72) are distributed at equal intervals around the rotation axis of the rotating seat (71), and one end of the positioning bolt (73) passes through the rotating seat (61) and extends to the inside of the positioning hole (72) and is threadedly connected to the rotating seat (71).

8. The twist drill grinding device according to claim 6, characterized in that: The fine-tuning structure (8) comprises a fine-tuning seat (81), a fine-tuning block (82) and a locking nut (83); the fine-tuning seat (81) is fixedly mounted on a side of the bottom of the rotating seat (71) away from the rotating seat (61); a fine-tuning block (82) is arranged on one side of the top of the fine-tuning seat (81); and a locking nut (83) is passed through the interior of the fine-tuning block (82).

9. A twist drill grinding device according to claim 8, characterized in that: One end of the fine-tuning block (82) and the inner side wall of the fine-tuning seat (81) are both in an arc shape, scale lines are evenly arranged on one side of the arc shape at the top end of the fine-tuning block (82), and a scale line is arranged at the middle position of the arc shape at the top end of the fine-tuning seat (81), and the bottom end of the locking nut (83) extends to the inside of the fine-tuning seat (81) and is threadedly connected to the fine-tuning seat (81).

10. The twist drill grinding device according to claim 8, characterized in that: The supporting structure (9) comprises a fixed plate (91), a gantry (92), a movable plate (93), a clamping handle (94), a third threaded rod (95) and a V-shaped groove (96); one end of the fixed plate (91) is fixedly mounted on a side of the fine-tuning block (82) away from the fine-tuning seat (81) by means of bolts; the gantry (92) is fixedly mounted on an outer wall of a side of the fixed plate (91) away from the fine-tuning block (82); the movable plate (93) is arranged on the inner side of the gantry (92); a third threaded rod (95) is threadedly connected to a side of the gantry (92) away from the fixed plate (91); a clamping handle (94) is fixedly mounted on one end of the third threaded rod (95); the other end of the third threaded rod (95) extends to the inside of the movable plate (93) and is rotatably connected to the movable plate (93); and the adjacent surfaces of the fixed plate (91) and the movable plate (93) are both provided with a V-shaped groove (96).

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