Twist drill coping device with efficient and accurate positioning function

Abstract

The utility model provides a twist drill coping device with high efficiency and accurate positioning, and belongs to the field of alloy cutter coping machining. The problems that certain dangerousness exists in existing auger bit coping, the coping yield is uncontrollable, and the coping efficiency is difficult to improve are solved. The drilling machine comprises a platform, a grinding wheel mechanism, a walking mechanism and a drill bit clamping mechanism, the grinding wheel mechanism, the walking mechanism and the drill bit clamping mechanism are all arranged on the platform, the grinding wheel mechanism is arranged at one end of the walking mechanism, the drill bit clamping mechanism is arranged on the walking mechanism, and the walking mechanism comprises a lead screw, a linear guide rail, a sliding table and a circular truncated cone face. The grinding wheel mechanism comprises a grinding wheel mounting frame, a servo motor and a grinding wheel, and the drill bit clamping mechanism comprises a drill bit clamping tool and a clamping tool mounting seat. The auger bit grinding device is mainly used for grinding an auger bit.

Description

Technical Field

[0001] The utility model belongs to the field of alloy tool grinding and processing, in particular to a twist drill grinding device with high efficiency and precise positioning. Background Art

[0002] The use of drill bits is relatively common in actual work. Twist drills are widely used as commonly used tools in machining. Since twist drills wear out too much during use, it is necessary to sharpen the used twist drill bits to make their blades sharp so that they can continue to be used and improve their utilization rate.

[0003] The existing twist drill bit grinding requires experienced staff to use a grinding machine for grinding. However, using a grinding machine for grinding is dangerous, and the grinding yield rate is uncontrollable, making it difficult to improve the grinding efficiency. Utility Model Content

[0004] In view of this, the utility model aims to propose a twist drill grinding device with high efficiency and precise positioning to solve the problems that the existing twist drill grinding is dangerous, the grinding yield is uncontrollable and the grinding efficiency is difficult to improve.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a twist drill grinding device with high efficiency and precise positioning, which includes a platform, a grinding wheel mechanism, a walking mechanism and a drill clamping mechanism, the grinding wheel mechanism, the walking mechanism and the drill clamping mechanism are all arranged on the platform, the grinding wheel mechanism is arranged at one end of the walking mechanism, the drill clamping mechanism is arranged on the walking mechanism, the walking mechanism includes a screw, a linear guide, a slide and a circular table, the linear guide is arranged on the platform, a slider is provided at the bottom of the slide, the slide is slidably arranged on the linear guide through the slider, the circular table is rotatably arranged above the slide, a screw is screwed at one end of the slide, and the screw drives the slide to slide on the linear guide, the grinding wheel mechanism includes a grinding wheel mounting frame, a servo motor and a grinding wheel, and the grinding wheel mounting frame is arranged at one end of the linear guide On the platform, the upper half of the grinding wheel mounting frame is inclined, and a first dovetail groove is provided on one side of the grinding wheel mounting frame, and a first dovetail block is provided on one side of the servo motor, and the servo motor is slidably connected to the first dovetail groove of the grinding wheel mounting frame through the first dovetail block, and the output end of the servo motor is connected to the grinding wheel and drives the grinding wheel to rotate. The drill clamping mechanism includes a drill clamping tool and a clamping tool mounting seat, and the clamping tool mounting seat is arranged on the circular table surface, and the drill clamping tool is inclined at the top of the clamping tool mounting seat, and a second dovetail groove is opened on the top of the clamping tool mounting seat, and a second dovetail block is provided at the bottom of the drill clamping tool, and the drill clamping tool is slidably connected to the second dovetail groove of the clamping tool mounting seat through the second dovetail block. A drill bit is clamped in the drill clamping tool, and the drill bit is arranged opposite to the grinding wheel.

[0006] Furthermore, a screw connection seat is provided on a platform at one end of the linear guide rail away from the grinding wheel mounting frame, one end of the screw passes through the screw connection seat and is connected to a handwheel, and the screw is rotatably connected to the screw connection seat.

[0007] Furthermore, a slewing bearing is provided on the upper surface of the slide, the outer ring of the slewing bearing is fixedly provided on the slide, and the inner ring of the slewing bearing is provided at the bottom of the circular table surface and is rotatably connected to the outer ring of the slewing bearing.

[0008] Furthermore, a first limit screw is provided at one end of the circular table surface close to the grinding wheel mounting frame, and the bottom of the first limit screw is arranged to pass through the bottom of the circular table surface, and two second limit screws are symmetrically provided on the upper surface of the slide table on both sides of the first limit screw. When the circular table surface rotates clockwise or counterclockwise, the bottom of the first limit screw contacts and cooperates with the two second limit screws respectively.

[0009] Furthermore, an end plate is provided on the top of the grinding wheel mounting frame, a guide bolt is provided on the end plate, and a guide ring is provided on the side of the first dovetail block away from the servo motor, and the guide ring is slidably sleeved on the guide bolt.

[0010] Furthermore, a protective cover is provided on the outside of the grinding wheel, and the protective cover includes an upper protective cover and a lower protective cover. The lower protective cover is fixedly connected to the servo motor, the upper protective cover is provided above the lower protective cover and connected to the lower protective cover, and a handle is provided on the upper protective cover.

[0011] Furthermore, a limiting groove is provided at the bottom of the grinding wheel mounting frame, a sliding plate is slidably arranged in the limiting groove, and a side of the sliding plate close to the slide is connected to a limiting slide rod, one end of the limiting slide rod slides through the grinding wheel mounting frame and contacts and cooperates with the slide, and a fastening bolt is provided on one side of the bottom of the grinding wheel mounting frame, and one end of the fastening bolt passes through the grinding wheel mounting frame and abuts against the limiting slide rod.

[0012] Furthermore, the drill bit clamping tool includes a drill bit clamping tool body, a clamping block and a clamping bolt, the drill bit clamping tool body is provided with a drill bit clamping hole, the drill bit is placed in the drill bit clamping hole, a clamping block is provided on one side of the drill bit clamping tool body, one end of the clamping bolt passes through one side of the drill bit clamping tool body and abuts against one side of the clamping block, and reset slide bars are provided on both sides of the clamping bolt, one end of the reset slide bar passes through one side of the drill bit clamping tool body and is fixedly connected to one side of the clamping block, the reset slide bar is slidably connected to the drill bit clamping tool body, and a reset spring is provided between the end head of the other end of the reset slide bar and the drill bit clamping tool body, and the reset spring is sleeved on the reset slide bar.

[0013] Furthermore, a positioning ring is provided at the tail end of the drill bit clamping tool body, and the positioning ring is connected to the tail end of the drill bit.

[0014] Furthermore, a rotating handle is provided on one side of the clamping tool mounting seat.

[0015] Compared with the existing technology, the beneficial effects of the present invention are:

[0016] 1. The utility model controls the angles of the grinding wheel and the tool by setting a grinding wheel mechanism and a drill clamping mechanism, eliminating the need for manual grinding experience, saving grinding time and significantly improving grinding efficiency;

[0017] 2. The utility model is provided with a walking mechanism, the movement of which is precisely controlled by a linear guide rail, effectively ensuring the movement accuracy of the drill bit;

[0018] 3. The utility model installs and fixes the drill bit by arranging a drill bit clamping tool, so that the symmetry of the drill bit cutting edge is guaranteed, and the operation is accurate and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a twist drill grinding device with high efficiency and precise positioning according to the present invention;

[0021] Figure 2 This is a schematic structural diagram of the travel mechanism of a twist drill grinding device with high efficiency and precise positioning according to the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the interior below the circular table in the traveling mechanism of the twist drill grinding device with high efficiency and precise positioning described in the present invention;

[0023] Figure 4 This is a structural diagram of the grinding wheel mechanism of a twist drill grinding device with high efficiency and precise positioning according to the present invention;

[0024] Figure 5 This is a structural schematic diagram of the grinding wheel mechanism of the twist drill grinding device with high efficiency and precise positioning according to the present invention from another perspective;

[0025] Figure 6 This is a schematic diagram of a partial structure of a grinding wheel mechanism of a twist drill grinding device with high efficiency and precise positioning according to the present invention;

[0026] Figure 7 This is a structural schematic diagram of a drill bit clamping mechanism of a twist drill grinding device with high efficiency and precise positioning according to the present invention;

[0027] Figure 8 This is a structural schematic diagram of a drill bit clamping fixture for a twist drill grinding device with high efficiency and precise positioning according to the present invention;

[0028] Figure 9 This is a structural schematic diagram of a drill clamping tooling of a twist drill grinding device with high efficiency and precise positioning described in the utility model from another perspective.

[0029] 1- platform, 2- walking mechanism, 3- grinding wheel mechanism, 4- drill clamping mechanism, 5- slide, 6- linear guide, 7- slider, 8- round table, 9- lead screw, 10- lead screw connector, 11- handwheel, 12- first limit screw, 13- second limit screw, 14- grinding wheel mounting bracket, 15- servo motor, 16- first dovetail block, 17- first dovetail groove, 18- grinding wheel, 19- protective cover, 20- end plate, 2 1-guide bolt, 22-guide ring, 23-drill clamping fixture, 24-clamping fixture mounting seat, 25-drill bit, 26-rotating handle, 27-drill clamping fixture body, 28-clamping block, 29-clamping bolt, 30-reset slide rod, 31-reset spring, 32-second dovetail block, 33-second dovetail groove, 34-limiting slide rod, 35-fastening bolt, 36-limiting groove, 37-sliding plate, 38-positioning ring. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0031] See also Figure 1-9Description of this embodiment: A twist drill grinding device with high efficiency and precise positioning, which includes a platform 1, a grinding wheel mechanism 3, a walking mechanism 2 and a drill clamping mechanism 4. The grinding wheel mechanism 3, the walking mechanism 2 and the drill clamping mechanism 4 are all arranged on the platform 1, the grinding wheel mechanism 3 is arranged at one end of the walking mechanism 2, the drill clamping mechanism 4 is arranged on the walking mechanism 2, the walking mechanism 2 includes a screw, a linear guide 6, a slide 5 and a circular table 8, the linear guide 6 is arranged on the platform 1, and a slider is provided at the bottom of the slide 5 7, the slide 5 is slidably arranged on the linear guide 6 through the slider 7, the circular table 8 is rotatably arranged above the slide 5, one end of the slide 5 is screwed with a screw 9, the screw 9 drives the slide 5 to slide on the linear guide 6, the grinding wheel mechanism 3 includes a grinding wheel mounting frame 14, a servo motor 15 and a grinding wheel 18, the grinding wheel mounting frame 14 is arranged on the platform 1 at one end of the linear guide 6, the upper half of the grinding wheel mounting frame 14 is inclined, and a first dovetail groove 17 is provided on one side of the grinding wheel mounting frame 14, the servo motor 15 and the grinding wheel 18. A first dovetail block 16 is provided on one side of the motor 15. The servo motor 15 is slidably connected to the first dovetail groove 17 of the grinding wheel mounting frame 14 through the first dovetail block 16. The output end of the servo motor 15 is connected to the grinding wheel 18 and drives the grinding wheel 18 to rotate. The drill clamping mechanism 4 includes a drill clamping tool 23 and a clamping tool mounting seat 24. The clamping tool mounting seat 24 is provided on the round table surface 8. The drill clamping tool 23 is tilted and arranged on the top of the clamping tool mounting seat 24. The top of the clamping tool mounting seat 24 A second dovetail groove 33 is provided, and a second dovetail block 32 is provided at the bottom of the drill clamping fixture 23. The drill clamping fixture 23 is slidably connected to the second dovetail groove 33 of the clamping fixture mounting seat 24 through the second dovetail block 32. A drill bit 25 is clamped in the drill clamping fixture 23, and the drill bit 25 is arranged opposite to the grinding wheel 18. In this embodiment, the grinding wheel mechanism 3 is used for grinding the drill bit 25, and the drill clamping mechanism 4 is used to fix the drill bit 25. The walking mechanism 2 drives the feed and exit movement of the drill bit 25 through the drill clamping mechanism 4.

[0032] In this embodiment, the grinding wheel mechanism 3 and the drill bit clamping mechanism 4 are provided to control the angles of the grinding wheel 18 and the drill bit 25, eliminating the need for manual experience in grinding, saving grinding time, and significantly improving grinding efficiency.

[0033] This embodiment is provided with a walking mechanism 2, and the movement of its slide 5 is precisely controlled by a linear guide 6, which effectively ensures the movement accuracy of the drill bit 25. The movement of the slide 5 is driven by a screw 9, so that the grinding parts of the drill bits 25 of different diameters can quickly approach the grinding surface of the grinding wheel 18, and fine-tuning can also be achieved during the grinding feed.

[0034] In this embodiment, the drill bit 25 is installed and fixed by providing a drill bit clamping fixture 24, so that the symmetry of the cutting edge of the drill bit 25 is ensured, and the drill bit 25 is installed and fixed accurately and quickly.

[0035] This embodiment Figure 9 As shown, a semi-cylindrical cavity is provided between the second dovetail groove 33 and the second dovetail block 32, and a standard hexagonal stud is provided in the cavity. The two end surfaces of the stud are ground flat, and the gap in the length direction is 0.05 mm. The middle of the second dovetail block 32 is an internal thread of the semi-circular cavity. When the hexagonal stud rotates, the hexagonal stud drill bit drives the drill clamping tool 23 to move along the second dovetail groove 33 through the second dovetail block 32, and the eccentricity of the drill bit during grinding can be adjusted.

[0036] In this embodiment, a screw connecting seat 10 is provided on the platform 1 at one end of the linear guide rail 6 away from the grinding wheel mounting frame 14. One end of the screw 9 passes through the screw connecting seat 10 and is connected to a handwheel 11. The screw 9 is rotatably connected to the screw connecting seat 10. The screw connecting seat 10 is used to fix one end of the screw 9, and the handwheel 11 is used by the staff to rotate the screw 9 to control the movement of the slide 5.

[0037] In this embodiment, a strong spring reset can also be sleeved on the screw 9 between the screw connecting seat 10 and the slide 5. The two ends of the strong spring are respectively against the screw connecting seat 10 and the slide 5. At this time, during grinding, the grinding process is mainly achieved by the spring thrust, so the grinding feed force is relatively soft.

[0038] In this embodiment, a slewing bearing is provided on the upper surface of the slide 5. The outer ring of the slewing bearing is fixedly provided on the slide 5. The inner ring of the slewing bearing is provided at the bottom of the circular table surface 8 and is rotatably connected to the outer ring of the slewing bearing. The circular table surface 8 is rotated on the slide 5 through the slewing bearing.

[0039] In this embodiment, the circular table 8 is provided with a first limit screw 12 at one end close to the grinding wheel mounting frame 14. The bottom of the first limit screw 12 is set to the bottom of the circular table 8. Two second limit screws 13 are symmetrically provided on the upper surface of the slide 5 on both sides of the first limit screw 12. When the circular table 8 rotates clockwise or counterclockwise, the bottom of the first limit screw 12 contacts and cooperates with the two second limit screws 13 respectively. The internal structure below the circular table 8 in the walking mechanism 2 is as shown in FIG. Figure 3As shown, the cylinder of the head of the first limit screw 12 on the conical surface 8 is exposed on the upper surface of the conical surface 8, and the bottom end of the screw thread of the first limit screw 12 passes through the conical surface 8 and is 1 mm apart from the upper surface of the slide 5. The screw threads of the two second limit screws 13 are all screwed into the slide 5, and the second limit screws 13 only expose the cylinder of the screw head on the upper surface of the slide 5. When the conical surface 8 rotates clockwise or counterclockwise, the bottom of the first limit screw 12 will hit the cylinder of the screw head of the second limit screws 13 on both sides, thereby playing a role in angle limiting. In this embodiment, the rotation angle limit of the conical surface 8 is between -75° and +75°.

[0040] In this embodiment, an end plate 20 is provided on the top of the grinding wheel mounting frame 14, and a guide bolt 21 is provided on the end plate 20. A guide ring 22 is provided on the side of the first dovetail block 16 away from the servo motor 15. The guide ring 22 is slidably sleeved on the guide bolt 21, and the guide bolt 21 guides the movement of the first dovetail block 16 through the guide ring 22.

[0041] In this embodiment, a protective cover 19 is provided on the outside of the grinding wheel 18, and the protective cover 19 includes an upper cover 19 and a lower cover 19. The lower cover 19 is fixedly connected to the servo motor 15, and the upper cover 19 is arranged above the lower cover 19 and connected to the lower cover 19. A handle is provided on the upper cover 19. The protective cover 19 protects the grinding wheel 18. The protective cover 19 has an upper and lower split structure. The lower cover 19 is fixed to the bearing seat at the front of the servo motor 15. The upper cover of the protective cover 19 is a circular movable cover and is provided with a handle to facilitate the replacement of the grinding wheel 18.

[0042] In this embodiment, a limiting groove 36 is provided at the bottom of the grinding wheel mounting frame 14, and a sliding plate 37 is slidably provided in the limiting groove 36. The sliding plate 37 is connected to the limiting slide bar 34 on the side close to the slide 5. One end of the limiting slide bar 34 slides through the grinding wheel mounting frame 14 and contacts and cooperates with the slide 5. A fastening bolt 35 is provided on one side of the bottom of the grinding wheel mounting frame 14. One end of the fastening bolt 35 passes through the grinding wheel mounting frame 14 and abuts against the limiting slide bar 34. The limiting groove 36, the sliding plate 37 and the limiting slide bar 34 are provided at the bottom of the grinding wheel mounting frame 14. 4, when the slide 5 is fed, one end of the slide 5 pushes the sliding plate 37 to slide in the limiting groove 36 through the limiting slide bar 34. When the slide 5 drives the feed grinding of the cutting edge of one side of the drill bit 25 thereon, the fastening bolt 35 is immediately tightened to lock the position of the limiting slide bar 34, which is the limit position of the feed of the slide 5. The slide 5 is withdrawn, and after replacing the cutting edge of one side of the drill bit 25, the slide 5 is fed again for grinding. When the slide 5 hits the limiting slide bar 34, the drill bit 25 no longer feeds forward, so that the cutting edges on both sides of the drill bit 25 are ground at the same height, achieving a symmetrical effect.

[0043] The drill bit clamping tool 23 in this embodiment includes a drill bit clamping tool body 27, a clamping block 28 and a clamping bolt 29. The drill bit clamping tool body 27 is provided with a drill bit clamping hole, and the drill bit 25 is placed in the drill bit clamping hole. A clamping block 28 is provided on one side of the drill bit clamping hole. One end of the clamping bolt 29 passes through one side of the drill bit clamping tool body 27 and abuts against one side of the clamping block 28. Reset slide bars 30 are provided on both sides of the clamping bolt 29. One end of the reset slide bar 30 passes through one side of the drill bit clamping tool body 27 and is fixedly connected to one side of the clamping block 28. The reset slide bar 30 is slidably connected to the drill bit clamping tool body 27, and a reset spring 31 is provided between the end of the other end of the reset slide bar 30 and the drill bit clamping tool body 27. The reset spring 31 is sleeved on the reset slide bar 30, and the drill bit 25 is placed in the drill bit clamping hole and is clamped by the clamping block 28 and clamped by tightening the clamping bolt 29 to achieve the clamping and fixing of the drill bit 25. When the drill bit 25 needs to be removed, the clamping bolt 29 is loosened, and under the push of the reset spring 31 on the reset slide bar 30, the reset slide bar 30 drives the clamping block 28 away from the drill bit 25. After the clamping block 28 is loosened, the drill bit 25 can be removed.

[0044] In this embodiment, the tail end of the drill bit clamping tool body 27 is provided with a positioning ring 38, and the positioning ring 38 is connected to the tail end of the drill bit 25. Figure 9 As shown, after the drill bit 25 is clamped after its protruding length is determined, a retaining ring 38 is tightened against the cylindrical shank at the rear of the drill bit 25. This retaining ring 38 has a boss on its front that fits into the rear groove of the drill clamping fixture 27 and is then tightened with a screw. This allows the drill bit 25, locked in place by the retaining ring 38, to be rotated 180° after grinding the flank of one side of the drill bit 25 and then locked in the drill clamping fixture 27 to continue grinding the other flank. This ensures symmetry between the two cutting edges.

[0045] In this embodiment, a rotating handle 26 is provided on one side of the clamping fixture mounting seat 24 . The operator rotates the circular table surface 8 by rotating the handle 26 , thereby realizing the rotation of the clamping fixture mounting seat 24 .

[0046] The working steps of this embodiment are as follows:

[0047] Step 1: Install the grinding wheel 18 and check whether the grinding wheel 18 is installed correctly. Run the servo motor 15 for idling test. If there is no problem, stop the machine and proceed to the next step.

[0048] Step 2: Loosen the fastening bolts 35 at the bottom of the grinding wheel mounting frame 14, and manually crank the handwheel 11 to control the slide 5 to slide the drill clamping mechanism 4 away from the grinding wheel 18 to facilitate the installation of the drill bit 25. After the slide 5 is away from the grinding wheel mounting frame 14, the limit slide rod 34 is pushed out through the sliding plate 37;

[0049] Step 3: Confirm the diameter of the drill bit to be ground and adjust the eccentricity;

[0050] Step 4: Before locking the drill bit 25, adjust the protruding length of the drill bit 25 according to the diameter of the drill bit 25, swing the rotating handle 26 to the far left, then turn it to the right about 10 degrees and stop, and manually crank the handwheel 11 to control the slide 5 to feed slowly. After the blade to be sharpened of the drill bit 25 is completely fitted with the grinding wheel 18, lock the drill bit 25. The fitting requirement between the blade to be sharpened of the drill bit 25 and the grinding wheel 18 is that the front cutting edge of the drill bit 25 and the axis of the grinding wheel 18 are in the same plane, which is a complete fit;

[0051] Step 5: Tightly hold a positioning ring 38 against the rear cylindrical shank of the drill bit 25. Note that the raised portion of the ring should be inserted into the groove of the drill bit clamping fixture body 27.

[0052] Step 6: Confirm that the fastening bolts 35 at the bottom of the grinding wheel mounting frame 14 are loosened, and manually turn the handwheel 11 to control the slide 5 to move backward so that the drill bit 25 is in a position that does not contact the grinding wheel 18;

[0053] Step 7: Start the servo motor 15, and manually crank the handwheel 11 to control the slide 5 to feed slowly. After the drill bit 25 contacts the grinding wheel 18, manually control the swing handle 26 to swing from the left limit position to the right limit position to complete one grinding action. Generally, grind 3-5 times, control the slide 5 to feed 0.05mm again, and repeat the swing action;

[0054] Step 8: When the edge of one side of the drill bit 25 is completely ground, tighten the fastening bolt 35 to determine the limit position of the grinding on the other side through the limit slide 34. Manually turn the handwheel 11 to control the slide 5 to retreat, loosen the clamping bolt 29, and rotate the drill bit 25 with the locking positioning ring 38 180 degrees as a whole. The side protrusion of the positioning ring 38 must be inserted into the groove tightly, and then lock the drill bit 25;

[0055] Step 9: Manually turn the handwheel 11 to control the slide 5 to feed slowly, and grind the back face of the other side according to step 7. When the slide 5 hits the limit slide bar 34, the drill bit 25 no longer moves forward, and the entire grinding process is completed.

[0056] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. These embodiments do not exhaust all details, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A twist drill grinding device with high efficiency and precise positioning, characterized by: It comprises a platform (1), a grinding wheel mechanism (3), a walking mechanism (2) and a drill clamping mechanism (4); the grinding wheel mechanism (3), the walking mechanism (2) and the drill clamping mechanism (4) are all arranged on the platform (1); the grinding wheel mechanism (3) is arranged at one end of the walking mechanism (2); the drill clamping mechanism (4) is arranged on the walking mechanism (2); the walking mechanism (2) comprises a screw rod, a linear guide rail (6), a slide table (5) and a round table surface (8); the linear guide rail (6) is arranged on the platform (1); a slider ( 7), the slide (5) is slidably arranged on the linear guide rail (6) through the slider (7), the circular table (8) is rotatably arranged above the slide (5), one end of the slide (5) is screwed with a lead screw (9), and the lead screw (9) drives the slide (5) to slide on the linear guide rail (6), the grinding wheel mechanism (3) includes a grinding wheel mounting frame (14), a servo motor (15) and a grinding wheel (18), the grinding wheel mounting frame (14) is arranged on the platform (1) at one end of the linear guide rail (6), and the upper half of the grinding wheel mounting frame (14) is inclined. A first dovetail groove (17) is provided on one side of the grinding wheel mounting frame (14), a first dovetail block (16) is provided on one side of the servo motor (15), the servo motor (15) is slidably connected to the first dovetail groove (17) of the grinding wheel mounting frame (14) via the first dovetail block (16), the output end of the servo motor (15) is connected to the grinding wheel (18) and drives the grinding wheel (18) to rotate, the drill clamping mechanism (4) comprises a drill clamping fixture (23) and a clamping fixture mounting seat (24), the clamping fixture mounting seat (24) is arranged on a round table On the surface (8), the drill bit clamping fixture (23) is tiltedly arranged on the top of the clamping fixture mounting seat (24), the top of the clamping fixture mounting seat (24) is provided with a second dovetail groove (33), the bottom of the drill bit clamping fixture (23) is provided with a second dovetail block (32), the drill bit clamping fixture (23) is slidably connected to the second dovetail groove (33) of the clamping fixture mounting seat (24) through the second dovetail block (32), a drill bit (25) is clamped in the drill bit clamping fixture (23), and the drill bit (25) is arranged opposite to the grinding wheel (18).

2. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: A screw connection seat (10) is provided on the platform (1) at one end of the linear guide rail (6) away from the grinding wheel mounting frame (14); one end of the screw (9) passes through the screw connection seat (10) and is connected to a handwheel (11); and the screw (9) is rotatably connected to the screw connection seat (10).

3. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: A slewing bearing is provided on the upper surface of the slide (5), the outer ring of the slewing bearing is fixedly provided on the slide (5), and the inner ring of the slewing bearing is provided at the bottom of the circular table surface (8) and is rotatably connected to the outer ring of the slewing bearing.

4. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: A first limiting screw (12) is provided at one end of the circular table (8) close to the grinding wheel mounting frame (14), and the bottom of the first limiting screw (12) is extended to the bottom of the circular table (8). Two second limiting screws (13) are symmetrically provided on the upper surface of the slide (5) on both sides of the first limiting screw (12). When the circular table (8) rotates clockwise or counterclockwise, the bottom of the first limiting screw (12) contacts and cooperates with the two second limiting screws (13) respectively.

5. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: An end plate (20) is provided on the top of the grinding wheel mounting frame (14), and a guide bolt (21) is provided on the end plate (20). A guide ring (22) is provided on the side of the first dovetail block (16) away from the servo motor (15), and the guide ring (22) is slidably sleeved on the guide bolt (21).

6. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: A protective cover (19) is provided on the outside of the grinding wheel (18), and the protective cover (19) includes a protective cover (19) upper cover and a protective cover (19) lower cover. The protective cover (19) lower cover is fixedly connected to the servo motor (15). The protective cover (19) upper cover is arranged above the protective cover (19) lower cover and is connected to the protective cover (19) lower cover. A handle is provided on the protective cover (19) upper cover.

7. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: A limiting groove (36) is provided at the bottom of the grinding wheel mounting frame (14), a sliding plate (37) is slidably provided in the limiting groove (36), a side of the sliding plate (37) close to the slide (5) is connected to a limiting slide rod (34), one end of the limiting slide rod (34) slides through the grinding wheel mounting frame (14) and contacts and cooperates with the slide (5), a fastening bolt (35) is provided on one side of the bottom of the grinding wheel mounting frame (14), one end of the fastening bolt (35) passes through the grinding wheel mounting frame (14) and abuts against the limiting slide rod (34).

8. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: The drill bit clamping tool (23) comprises a drill bit clamping tool body (27), a clamping block (28) and a clamping bolt (29), wherein the drill bit clamping tool body (27) is provided with a drill bit clamping hole, the drill bit (25) is placed in the drill bit clamping hole, a clamping block (28) is provided on one side of the drill bit clamping hole, one end of the clamping bolt (29) passes through one side of the drill bit clamping tool body (27) and abuts against one side of the clamping block (28), and the clamping bolt (29) is provided on the drill bit clamping tool body (27). 9) are provided with reset slide bars (30) on both sides, one end of the reset slide bar (30) passes through one side of the drill bit clamping tool body (27) and is fixedly connected to one side of the clamping block (28), the reset slide bar (30) is slidably connected to the drill bit clamping tool body (27), and a reset spring (31) is provided between the end of the other end of the reset slide bar (30) and the drill bit clamping tool body (27), and the reset spring (31) is sleeved on the reset slide bar (30).

9. The twist drill grinding device with high efficiency and precise positioning according to claim 8, characterized in that: A positioning ring (38) is provided at the tail end of the drill bit clamping tool body (27), and the positioning ring (38) is connected to the tail end of the drill bit (25).

10. The twist drill grinding device with high efficiency and precise positioning according to claim 1, characterized in that: A rotating handle (26) is provided on one side of the clamping fixture mounting seat (24).

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