Drill bit polisher

Abstract

The utility model belongs to the technical field of drill bit machining, and particularly relates to a drill bit polisher which comprises a shell and a polishing assembly, the polishing assembly is composed of a driving shaft, a driven shaft, a first polishing piece and a second polishing piece, the polishing pieces are installed on the two shafts respectively and form an included angle, and the driving shaft is externally connected with a driving device and drives the driven shaft to rotate through a transmission assembly. The grinding device has the advantages that the driving shaft and the driven shaft are relatively inclined, so that a cutting inclined plane is obliquely ground during grinding, and the problem that only cutting edge grinding is concerned on the market is solved; the design can ensure the grinding quality of the drill bit, prolong the service life of the drill bit and reduce waste and economic burden.

Description

Technical Field

[0001] This utility model belongs to the field of drill bit processing technology, and specifically refers to a drill bit grinder. Background Technology

[0002] A drill bit is a cutting tool used in drills or drilling machines to cut circular holes. Drill bits are typically one-piece cylinders with a set of cutting edges and chip grooves. The front end of the drill bit is usually pointed, with cutting inserts on both sides. Chip grooves are formed between the cutting inserts on both sides. The cutting surface of the cutting inserts is an inclined plane, with the front end of the inclined plane being a cutting edge. The cutting edge first contacts and cuts the workpiece, and then the inclined plane pushes the cutting edge forward to continue cutting the workpiece. Finally, the chip debris is discharged through the chip grooves. After prolonged use, the cutting edge of the drill bit will become worn and dull. Grinding the cutting bevel to form a flat surface reduces the quality of the cutting edge, thus affecting the efficiency and quality of drilling and other operations. Therefore, drill bits need to be ground at an angle. Currently, most drill bit grinders on the market simply sharpen the cutting edge to a point while neglecting to grind the cutting bevel. This grinding method does not specifically address the wear problem of the cutting bevel, resulting in the grinder not achieving the desired grinding effect. This leads to insufficient grinding of the drill bit and reduces its usability after grinding. Summary of the Invention

[0003] The purpose of this invention is to provide a drill bit grinder with a simple structure that allows for angled grinding of the drill bit, ensuring grinding quality and improving work efficiency.

[0004] The purpose of this utility model is achieved as follows:

[0005] A drill bit grinder includes a housing and a grinding assembly disposed within the housing. The grinding assembly includes a drive shaft, a driven shaft, and a first grinding disc, a second grinding disc, a drive wheel, and a driven wheel respectively disposed on the drive shaft and the driven shaft. One end of the drive shaft passes through the housing and is externally connected to a drive device. The drive shaft and the driven shaft are inclined relative to each other. The first grinding disc and the drive wheel are disposed on the drive shaft, and the second grinding disc and the driven wheel are disposed on the driven shaft. An angle is formed between the first grinding disc and the second grinding disc. The drive wheel and the driven wheel mesh. The first grinding disc and the drive wheel are inclined relative to the driven shaft, the driven wheel, and the second grinding disc as the drive shaft is inclined. The drive shaft drives the first grinding disc to rotate, and the drive wheel can drive the driven wheel to rotate, thereby causing the driven shaft to rotate and driving the second grinding disc to rotate.

[0006] Furthermore, the front end of the drive shaft is provided with a first mounting part for mounting the first grinding disc and the drive wheel. The first mounting part is a "waist-shaped shaft". The middle of the first grinding disc and the drive wheel is provided with a first grinding hole and a drive hole that are adapted to the first mounting part. The first grinding hole and the drive hole are both "waist-shaped holes" and pass through the first mounting part. The front end of the driven shaft is provided with a second mounting part for mounting the second grinding disc and the driven wheel. The second mounting part is a "waist-shaped shaft". The middle of the second grinding disc and the driven wheel is provided with a second grinding hole and a driven hole that are adapted to the second mounting part. The second grinding hole and the driven hole are both "waist-shaped holes" and pass through the second mounting part.

[0007] Furthermore, both ends of the first mounting part and the second mounting part are provided with limiting members. The limiting members are used to fix the relative positions of the first grinding disc, the second grinding disc, the driving wheel and the driven wheel, and to prevent the first grinding disc, the second grinding disc, the driving wheel and the driven wheel from moving back and forth.

[0008] Furthermore, the housing is provided with a connecting part, the connecting part has a connecting groove, and the rear end of the driven shaft is provided with a bearing, which is located in the connecting groove.

[0009] Furthermore, a grinding groove is provided in the middle of the housing, which is located in front of the connection between the second grinding disc and the first grinding disc. A mounting base is provided at the lower end of the housing, and a fixing part is provided on the mounting base. The fixing part has a mounting groove for mounting a drill bit, which is located in front of the grinding groove. During grinding, the drill bit is placed in the mounting groove, and the end of the drill bit passes through the grinding groove and abuts against the connection between the second grinding disc and the first grinding disc.

[0010] Furthermore, the mounting base is provided with a connecting seat, and the connecting seat has a sliding hole. The fixing part is located in the sliding hole and can move up and down relative to the sliding hole. The sliding hole is also provided with a lead screw and an adjusting part. The upper end of the lead screw is movably connected to the fixing part, and the lower end is connected to the adjusting part. Rotating the adjusting part can cause the lead screw to drive the fixing part to move up and down.

[0011] Furthermore, the connecting seat is also provided with limiting holes, which are located on both sides of the connecting seat and communicate with the sliding hole. The adjusting part passes through the limiting hole and protrudes from the outside of the connecting part.

[0012] Furthermore, the housing includes a left shell and a right shell. The left shell is provided with a rotating shaft, and both the upper and lower ends of the right shell are provided with rotating holes. The rotating shaft passes through the rotating holes, and the right shell can rotate relative to the left shell around the rotating shaft through the rotating holes. The lower end of the rotating shaft is fixedly connected to the mounting base.

[0013] Furthermore, a connector is provided between the left and right shells. The left end of the connector is provided with a locking hole, and a locking member is provided on the locking hole. The locking member passes through the rear end of the left shell, and the left shell can rotate relative to the right shell. When it is necessary to adjust the angle, the locking member is loosened, and then the angle or position between the left and right shells is adjusted.

[0014] Furthermore, the left and / or right shells are provided with auxiliary holes, through which the second and / or first grinding discs are exposed, and the front end of the auxiliary groove is provided with an auxiliary fixing groove for placing the drill bit.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] The purpose of this utility model is to provide a drill bit grinder with a simple structure that allows the drill bit to be ground at a certain angle during the grinding process, thus ensuring grinding quality and significantly improving work efficiency. The grinder includes a housing and a grinding assembly for grinding drill bits. The grinding assembly includes a drive shaft, a driven shaft, and a first grinding disc and a second grinding disc respectively disposed on the drive shaft and the driven shaft. The first grinding disc is disposed on the drive shaft, and the second grinding disc is disposed on the driven shaft, forming an included angle between the first grinding disc and the second grinding disc. One end of the drill bit passes through the housing and is externally connected to a drive device. A transmission assembly is also provided between the drive shaft and the driven shaft. The transmission assembly includes a drive wheel on the drive shaft and a driven wheel on the driven shaft. The drive wheel and the driven wheel are equipped with matching gears. The drive wheel and the driven wheel mesh with each other. While driving the drive shaft to rotate the first grinding disc, the drive wheel can also drive the driven wheel to rotate, thereby causing the driven shaft to rotate and drive the second grinding disc to rotate. After the drill bit is fixed in the mounting slot, the cutting blades on both sides of the drill bit end respectively engage with the first grinding disc. The first and second grinding discs abut against each other, and the drive wheel rotates via a drive device, thereby driving the driven wheel to rotate, so that the first and second grinding discs rotate together for grinding. In this invention, the drive shaft and driven shaft are relatively inclined. The first grinding part is located on the drive shaft, and the second grinding part is located on the driven shaft, such that the first grinding part is inclined relative to the second grinding part. For example, the drive shaft is inclined downwards, the first grinding part is inclined downwards with the drive shaft, and the driven shaft is inclined upwards, and the second grinding part is inclined upwards with the driven shaft. The first grinding section tilts upwards along with the driving shaft, while the second grinding section tilts downwards along with the driven shaft. Regardless of whether the driving shaft is tilted upwards or downwards, the driven shaft is always opposite to the driving shaft, and vice versa. This design allows for tilted grinding of the cutting surface of the drill bit, effectively solving the problem that existing drill bit grinders on the market often only focus on sharpening the cutting edge and neglect the grinding of the cutting surface. By tilting the cutting surface, not only can the cutting edge remain sharp, but an ideal cutting surface can also be ground, thus ensuring the quality of drill bit grinding. Drill bits ground in this way are easier to use, allowing for multiple reuses, effectively reducing drill bit waste, lowering the frequency of drill bit replacements, and alleviating the user's financial burden. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 It is an exploded view of the present utility model.

[0019] Figure 3This is a cross-sectional view of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of this utility model with half of the shell removed.

[0021] Figure 5 This is one of the schematic diagrams of the connection structure between the left and right shells of this utility model.

[0022] Figure 6 This is the second schematic diagram of the connection structure between the left and right shells of this utility model.

[0023] Figure 7 This is a schematic diagram of the connection structure of the half-shell, drive shaft and driven shaft of this utility model.

[0024] Figure 8 This is a schematic diagram of the connection structure between the mounting base and the fixing part of this utility model.

[0025] Figure 9 This is a structural schematic diagram of the mounting base of this utility model.

[0026] Figure 10 This is a schematic diagram of the connection structure between the fixing part and the adjusting part of this utility model.

[0027] Figure 11 This is a schematic diagram of the lead screw and adjusting part of this utility model.

[0028] Figure 12 This is a schematic diagram of the structure of the grinding component of this utility model.

[0029] Figure 13 This is a schematic diagram of the structure of the grinding disc, drive shaft, and driven shaft of this utility model.

[0030] Figure 14 This is a schematic diagram of the drive shaft and driven shaft of this utility model.

[0031] The meaning of the labels in the diagram:

[0032] 1-Housing; 2-Grinding assembly; 4-Drive wheel; 5-Driven wheel; 6-Second grinding disc;

[0033] 7-First grinding disc; 8-Driven shaft; 9-Driven shaft; 10-Mounting base; 11-Fixing part; 12-Mounting groove; 13-Left shell; 14-Right shell; 15-Connecting piece; 16-Locking hole; 17-Locking piece; 18-Grinding groove;

[0034] 19-Connecting seat; 20-Sliding hole; 21-Lead screw; 22-Adjusting part; 23-Auxiliary hole; 24-Auxiliary fixing groove; 25-Rotating hole; 26-Rotating shaft; 27-Limiting hole; 28-First mounting part; 29-First grinding hole; 30-Active hole; 31-Second mounting part; 32-Second grinding hole; 33-Driven hole; 34-Limiting element; 35-Connecting part; 36-Connecting groove; 37-Bearing. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments:

[0036] A drill bit grinder includes a housing 1 and a grinding assembly 2 disposed within the housing 1. The grinding assembly 2 includes a drive shaft 8, a driven shaft 9, and a first grinding disc 7, a second grinding disc 6, a drive wheel 4, and a driven wheel 5 respectively disposed on the drive shaft 8 and the driven shaft 9. One end of the drive shaft 8 passes through the housing 1 and is externally connected to a drive device. The drive shaft 8 and the driven shaft 9 are inclined relative to each other. The first grinding disc 7 and the drive wheel 4 are disposed on the drive shaft 8, and the second grinding disc 6 and the driven wheel 5 are disposed on the driven shaft 9. An included angle is formed between the first grinding disc 7 and the second grinding disc 6. The drive wheel 4 meshes with the driven wheel 5. The first grinding disc 7 and the drive wheel 4 are inclined relative to the driven shaft 9, the driven wheel 5, and the second grinding disc 6 with the drive shaft 8. The drive shaft 8 drives the first grinding disc 7 to rotate, and at the same time, the drive wheel 4 drives the driven wheel 5 to rotate, thereby causing the driven shaft 9 to rotate and drive the second grinding disc 6 to rotate.

[0037] The purpose of this utility model is to provide a drill bit grinder with a simple structure that allows the drill bit to be ground at a certain angle during the grinding process, thus ensuring grinding quality and significantly improving work efficiency. The grinder includes a housing 1 and a grinding assembly 2 for grinding drill bits. The grinding assembly 2 includes a drive shaft 8, a driven shaft 9, and a first grinding disc 7 and a second grinding disc 6 respectively disposed on the drive shaft 8 and the driven shaft 9. The first grinding disc 7 is disposed on the drive shaft 8, and the second grinding disc 6 is disposed on the driven shaft 9, forming an included angle between the first grinding disc 7 and the second grinding disc 6. One end of shaft 8 passes through the housing 1 and is externally connected to a drive device. A transmission assembly is also provided between the drive shaft 8 and the driven shaft 9. The transmission assembly includes a drive wheel 4 on the drive shaft 8 and a driven wheel 5 on the driven shaft 9. The drive wheel 4 and the driven wheel 5 are equipped with matching gears. The drive wheel 4 and the driven wheel 5 mesh with each other. While driving the drive shaft 8 to rotate the first grinding disc 7, the drive wheel 4 can also drive the driven wheel 5 to rotate, thereby causing the driven shaft 9 to rotate and drive the second grinding disc 6 to rotate. After the drill bit is fixed on the mounting slot 12, the cutting blades on both sides of the drill bit end respectively The first grinding disc 7 and the second grinding disc 6 abut against each other. A drive device rotates the drive wheel 4, which in turn rotates the driven wheel 5, causing the first grinding disc 7 and the second grinding disc 6 to rotate together for grinding. In this invention, the drive shaft 8 and the driven shaft 9 are relatively inclined. A first grinding part is located on the drive shaft 8, and a second grinding part is located on the drive shaft 9, such that the first grinding part is inclined relative to the second grinding part. For example, if the drive shaft 8 is inclined downwards, the first grinding part will also be inclined downwards with the drive shaft 8, while the driven shaft 9 will be inclined upwards with the driven shaft 9. The drive shaft 8 is tilted upwards, and the first grinding part tilts upwards along with the drive shaft 8. The driven shaft 9 tilts downwards, and the second grinding part tilts downwards along with the driven shaft 9. Regardless of whether the drive shaft 8 is tilted upwards or downwards, the driven shaft 9 is always tilted in the opposite direction to the drive shaft 8, and vice versa. This design allows for tilted grinding of the cutting bevel of the drill bit, effectively solving the problem that existing drill bit grinders on the market often only focus on grinding the cutting edge and neglect the grinding of the cutting bevel. By tilting the grinding bevel, not only can the cutting edge be kept sharp, but an ideal cutting bevel can also be ground, thus ensuring the quality of drill bit grinding. Drill bits ground in this way are easier to use, allowing for repeated use, effectively reducing drill bit waste, lowering the frequency of drill bit replacements, and alleviating the user's economic burden.

[0038] Preferably, the front end of the drive shaft 8 is provided with a first mounting part 28 for mounting the first grinding disc 7 and the drive wheel 4. The first mounting part 28 is a "waist-shaped shaft". The middle of the first grinding disc 7 and the drive wheel 4 is provided with a first grinding hole 29 and a drive hole 30 that are adapted to the first mounting part 28. The first grinding hole 29 and the drive hole 30 are both "waist-shaped holes" and pass through the first mounting part 28. The front end of the driven shaft 9 is provided with a second mounting part 31 for mounting the second grinding disc 6 and the driven wheel 5. The second mounting part 31 is a "waist-shaped shaft". The middle of the second grinding disc 6 and the driven wheel 5 is provided with a second grinding hole 32 and a driven hole 33 that are adapted to the second mounting part 31. The second grinding hole 32 and the driven hole 33 are both "waist-shaped holes" and pass through the second mounting part 31. The upper and lower ends of the first mounting part 28 and the second mounting part 31 are flat, and the left and right sides are flat. Both sides are arc-shaped. The first grinding hole 29, the active hole 30, the second grinding hole 32, and the driven hole 33 are respectively adapted to the first mounting part 28 and the second mounting part 31. The top and bottom ends are flat, and the left and right sides are arc-shaped. When the active shaft 8 rotates, it drives the first mounting part 28 to rotate. The first grinding wheel and the active wheel 4 are connected to the first mounting part 28 through the first grinding hole 29 and the active hole 30. Through the mutual limiting of the "waist-shaped shaft" and the "waist-shaped hole", the first grinding wheel and the active wheel 4 rotate with the first mounting part 28. The rotation of the active wheel 4 drives the driven wheel 5 to rotate. The second grinding wheel and the driven wheel 5 are connected to the second mounting part 31 through the second grinding hole 32 and the driven hole 33. Through the mutual limiting of the "waist-shaped shaft" and the "waist-shaped hole", the rotation of the driven wheel 5 drives the driven shaft 9 to rotate, thereby causing the second grinding disc 6 to rotate.

[0039] Preferably, both the front and rear ends of the first mounting portion 28 and the second mounting portion 31 are provided with limiting members 34. The limiting members 34 are used to fix the relative positions of the first grinding disc 7, the second grinding disc 6, the driving wheel 4, and the driven wheel 5, preventing the first grinding disc 7, the second grinding disc 6, the driving wheel 4, and the driven wheel 5 from moving back and forth. The limiting members 34 are respectively sleeved on the front ends of the first mounting portion 28 and the second mounting portion 31, and abut against the front end of the first grinding disc 7, the rear end of the driving wheel 4, the front end of the second grinding disc 6, and the rear end of the driven wheel 5. The limiting members 34 restrict the first grinding disc 7 and the driving wheel 4 from moving back and forth relative to the first mounting portion 28, and restrict the second grinding disc 6 and the driven wheel 5 from moving back and forth. 5. Rotating the second mounting part 31 back and forth serves two purposes: first, to prevent the grinding disc from slipping during rotation, which could lead to incomplete grinding and increase the stability of the grinding disc during grinding; second, to ensure the relative position between the driving wheel 4 and the driven wheel 5, preventing them from disengaging during rotation. This would prevent the driving wheel 4 from rotating while simultaneously driving the driven wheel 5, causing the first grinding disc 7 to rotate while the second grinding disc 6 remains stationary, thus only grinding the cutting surface on one side of the drill bit end. This ensures that the driving wheel 4 and the driven wheel 5 remain engaged while rotating, allowing the first grinding disc 7 and the second grinding disc 6 to rotate synchronously and thoroughly grind the cutting surface of the drill bit, thus ensuring the smoothness and efficiency of the entire working process.

[0040] Preferably, the housing 1 is provided with a connecting part 35, and the connecting part 35 is provided with a connecting groove 36. The rear end of the driven shaft 9 is provided with a bearing 37, which is located in the connecting groove 36. The outer side of the bearing 37 is engaged with the inner arm of the connecting groove 36. The rear end of the driven shaft 9 passes through the hole of the bearing 37. The driven shaft 9 is fixed to the housing 1 by the bearing 37, which enhances the connection stability between the driven shaft 9 and the housing 1, making the driven shaft 9 more stable when rotating and driving the second grinding disc 6 to rotate.

[0041] Preferably, a grinding groove 18 is provided in the middle of the housing 1, and the grinding groove 18 is located in front of the connection between the second grinding disc 6 and the first grinding disc 7. A mounting base 10 is provided at the lower end of the housing 1, and a fixing part 11 is provided on the mounting base 10. The fixing part 11 has a mounting groove 12 for mounting a drill bit. The mounting groove 12 is located in front of the grinding groove 18. During grinding, the drill bit is placed in the mounting groove 12, and the end of the drill bit passes through the grinding groove 18, so that the cutting bevels on both sides of the drill bit are in contact with the second grinding disc 6. When the first grinding disc 7 and the second grinding disc rotate, the drill bit is ground to create a beveled surface twice. A mounting groove 12 for mounting the drill bit is provided at the front end of the grinding groove 18. When grinding the drill bit, the drill bit can be placed in the mounting groove 12 and fixed by the mounting groove 12. The user does not need to hold the drill bit directly by hand. This increases the user's safety and makes it easier to fix the drill bit. The force on the drill bit is more even when it is fixed, making the drill bit stable and easier to grind.

[0042] Preferably, the mounting base 10 is provided with a connecting base 19, and the connecting base 19 has a sliding hole 20. The fixing part 11 is located in the sliding hole 20 and can move up and down relative to the sliding hole 20. The sliding hole 20 is also provided with a lead screw 21 and an adjusting part 22. The upper end of the lead screw 21 is movably connected to the fixing part 11, and the lower end is connected to the adjusting part 22. Rotating the adjusting part 22 can cause the lead screw 21 to drive the fixing part 11 to move up and down. Rotating the adjusting part 22 clockwise can cause the lead screw 21 to drive the fixing part 11 to move up and down. The adjustment part 22 is moved upwards, and the lead screw 21 drives the fixed part 11 to move downwards when the adjustment part 22 is rotated counterclockwise; or the adjustment part 22 is rotated clockwise, and the lead screw 21 drives the fixed part 11 to move downwards when the adjustment part 22 is rotated counterclockwise, and the lead screw 21 drives the fixed part 11 to move upwards. Through the movable connection between the fixed part 11 and the connecting seat 19, the fixed part 11 can be adjusted up and down according to the grinding requirements or the size of the drill bit by mounting the slot 12, which improves the flexibility of the grinding operation and ensures the grinding effect.

[0043] Preferably, the connecting seat 19 is further provided with limiting holes 27, which are located on both sides of the connecting seat 19 and communicate with the sliding hole 20. The adjusting part 22 passes through the limiting hole 27 and protrudes from the outside of the connecting part 35. Utilizing the principle of the lead screw 21, the adjusting part 22 passes through the limiting hole 27 and abuts against the limiting hole 27. The limiting hole 27 restricts the up-and-down movement of the adjusting part 22. Rotating the adjusting part 22 can drive the lead screw 21 to rotate up and down, thereby causing the fixing part 11 to move up and down, thus completing the adjustment. In addition, the adjusting part 22 is also provided with a protruding anti-slip part. The anti-slip part increases the friction between the finger and the adjusting part 22 when rotating the adjusting part 22, making it easier for the user to rotate the adjusting part 22.

[0044] Preferably, the housing 1 includes a left housing 13 and a right housing 14. The left housing 13 is provided with a rotating shaft 26, and both the upper and lower ends of the right housing 14 are provided with rotating holes 25. The rotating shaft 26 passes through the rotating holes 25, allowing the right housing 14 to rotate relative to the left housing 13 around the rotating shaft 26 via the rotating holes 25. The lower end of the rotating shaft 26 is fixedly connected to the mounting base 10. When different angles need to be ground, the position of the included angle formed between the first grinding disc 7 and the second grinding disc shifts by driving the right housing 14 to rotate. When the drill bit is placed on the mounting groove 12, if no adjustment is made, the angle between the first grinding disc 7 and the second grinding disc will be shifted. The angle formed will be located in the middle of the mounting groove 12, ensuring that the angles of the cutting bevels on both sides of the drill bit are consistent or have minimal difference after grinding. If it is necessary to adjust the angle of the cutting bevel of the drill bit, it can be achieved by adjusting the left shell 13 or the right shell 14. After adjustment, the angle formed between the first grinding disc 7 and the second grinding disc will be reduced and shifted to both sides of the mounting groove 12. In this way, after grinding, the angle of the cutting bevels on both sides of the drill bit will be greater on one side than on the other. The difference between the angles can be adjusted by adjusting the left shell 13 or the right shell 14, so that the cutting bevel of the drill bit can be precisely adjusted as needed to achieve the expected grinding effect.

[0045] Preferably, a connector 15 is provided between the left shell 13 and the right shell 14. The left end of the connector 15 is provided with a locking hole 16, and a locking member 17 is provided on the locking hole 16. The locking member 17 passes through the rear end of the left shell 13, and the left shell 13 can rotate relative to the right shell 14. The locking member 17 is used to fix the relative position of the left shell 13 and the right shell 14. When it is necessary to adjust the angle, the locking member 17 is loosened, and then the angle or position between the left shell 13 and the right shell 14 is adjusted so that the included angle between the left shell 13 and the right shell 14 is reduced, and the center end of the included angle is offset. This allows for grinding drill bits with different angles on both sides of the bevel surface, and easily adjusting the included angle between the left shell 13 and the right shell 14, thereby achieving precise grinding of workpieces with different shapes and angles. By controlling the loosening or tightening of the locking member 17, the angle is locked to ensure that it can be firmly locked after the angle is adjusted, preventing accidental slippage during use.

[0046] Preferably, the left shell 13 and / or the right shell 14 are provided with auxiliary holes 23, through which the second grinding disc 6 and / or the first grinding disc 7 are exposed. The front end of the auxiliary groove is provided with an auxiliary fixing groove 24 for placing the drill bit. The auxiliary holes 23 are provided on the left shell 13 or on the right shell 14, or both the left shell 13 and the right shell 14 are provided with auxiliary holes 23. Drill bits or other items that need to be ground can be easily ground in the auxiliary holes 23. In this way, the diversity of grinding is increased, making the grinding process more flexible and diverse, so as to meet different grinding needs. This not only improves practicality and diversity, but also brings convenience and efficiency to the grinding work.

[0047] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A drill bit grinder, characterized in that, The assembly includes a housing (1) and a grinding assembly (2) disposed within the housing (1). The grinding assembly (2) includes a drive shaft (8), a driven shaft (9), and a first grinding disc (7), a second grinding disc (6), a drive wheel (4), and a driven wheel (5) respectively disposed on the drive shaft (8) and the driven shaft (9). One end of the drive shaft (8) passes through the housing (1) and is externally connected to a drive device. The drive shaft (8) and the driven shaft (9) are inclined relative to each other. The first grinding disc (7) and the drive wheel (4) are disposed on the drive shaft (8), and the second grinding disc (6) is disposed on the drive shaft (8). 6) The driven wheel (5) is mounted on the driven shaft (9). The first polishing disc (7) and the second polishing disc (6) form an angle. The driving wheel (4) meshes with the driven wheel (5). The first polishing disc (7) and the driving wheel (4) are inclined relative to the driven shaft (9), the driven wheel (5) and the second polishing disc (6) with the driving shaft (8). The driving shaft (8) drives the first polishing disc (7) to rotate, and at the same time, the driving wheel (4) drives the driven wheel (5) to rotate, thereby causing the driven shaft (9) to rotate and drive the second polishing disc (6) to rotate.

2. The drill bit grinder according to claim 1, characterized in that: The front end of the drive shaft (8) is provided with a first mounting part (28) for mounting the first grinding disc (7) and the drive wheel (4). The first mounting part (28) is a "waist-shaped shaft". The middle of the first grinding disc (7) and the drive wheel (4) is provided with a first grinding hole (29) and a drive hole (30) that are adapted to the first mounting part (28). The first grinding hole (29) and the drive hole (30) are both "waist-shaped holes" and pass through the first mounting part (28). The driven shaft (9) has a second mounting part (31) at its front end for mounting the second grinding disc (6) and the driven wheel (5). The second mounting part (31) is a "waist-shaped shaft". The middle of the second grinding disc (6) and the driven wheel (5) is provided with a second grinding hole (32) and a driven hole (33) that are adapted to the second mounting part (31). The second grinding hole (32) and the driven hole (33) are both "waist-shaped holes" and pass through the second mounting part (31).

3. A drill bit grinder according to claim 1, characterized in that: Both ends of the first mounting part (28) and the second mounting part (31) are provided with limiting members (34). The limiting members (34) are used to fix the relative positions of the first grinding disc (7), the second grinding disc (6), the driving wheel (4) and the driven wheel (5) to prevent the first grinding disc (7), the second grinding disc (6), the driving wheel (4) and the driven wheel (5) from moving back and forth.

4. A drill bit grinder according to claim 1, characterized in that: The housing (1) is provided with a connecting part (35), and a connecting groove (36) is provided on the connecting part (35). The rear end of the driven shaft (9) is provided with a bearing (37), and the bearing (37) is located in the connecting groove (36).

5. A drill bit grinder according to any one of claims 1-4, characterized in that: The housing (1) has a grinding groove (18) in the middle. The grinding groove (18) is located in front of the connection between the second grinding disc (6) and the first grinding disc (7). The housing (1) has a mounting base (10) at the lower end. The mounting base (10) has a fixing part (11). The fixing part (11) has a mounting groove (12) for mounting a drill bit. The mounting groove (12) is located in front of the grinding groove (18). When grinding, the drill bit is placed in the mounting groove (12). The end of the drill bit passes through the grinding groove (18) and abuts against the connection between the second grinding disc (6) and the first grinding disc (7).

6. A drill bit grinder according to claim 5, characterized in that: The mounting base (10) is provided with a connecting base (19), and a sliding hole (20) is provided on the connecting base (19). The fixing part (11) is located in the sliding hole (20) and can move up and down relative to the sliding hole (20). The sliding hole (20) is also provided with a lead screw (21) and an adjusting part (22). The upper end of the lead screw (21) is movably connected to the fixing part (11), and the lower end is connected to the adjusting part (22). Rotating the adjusting part (22) can cause the lead screw (21) to drive the fixing part (11) to move up and down.

7. A drill bit grinder according to claim 6, characterized in that: The connecting seat (19) is also provided with a limiting hole (27), which is located on both sides of the connecting seat (19). The limiting hole (27) communicates with the sliding hole (20). The adjusting part (22) passes through the limiting hole (27) and protrudes from the outside of the connecting part (35).

8. A drill bit grinder according to claim 5, characterized in that: The housing (1) includes a left housing (13) and a right housing (14). The left housing (13) is provided with a rotating shaft (26). The upper and lower ends of the right housing (14) are provided with rotating holes (25). The rotating shaft (26) passes through the rotating hole (25). The right housing (14) can rotate relative to the left housing (13) around the rotating shaft (26) through the rotating hole (25). The lower end of the rotating shaft (26) is fixedly connected to the mounting base (10).

9. A drill bit grinder according to claim 8, characterized in that: A connector (15) is provided between the left shell (13) and the right shell (14). A locking hole (16) is provided at the left end of the connector (15). A locking member (17) is provided on the locking hole (16). The locking member (17) passes through the rear end of the left shell (13). The left shell (13) can rotate relative to the right shell (14). When it is necessary to adjust the angle, the locking member (17) is loosened, and then the angle or position between the left shell (13) and the right shell (14) is adjusted.

10. A drill bit grinder according to claim 8, characterized in that: The left shell (13) and / or the right shell (14) are provided with auxiliary holes (23) through which the second grinding disc (6) and / or the first grinding disc (7) are exposed. The front end of the auxiliary groove is provided with an auxiliary fixing groove (24) for placing the drill bit.

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