Grinding device and method for drill bit production

Abstract

The invention discloses a grinding device and method for drill bit production, the grinding device comprises a workbench, a grinding motor, a grinding wheel, a feeding assembly, an L-shaped plate, an angle adjusting assembly, a clamping assembly and a positioning assembly, and the bottom of the grinding motor is fixedly mounted at the top of the workbench. A grinding motor, a first angle adjusting motor and a second angle adjusting motor are started, a rocking handle is manually shaken or the rocking handle is replaced by a feeding motor to drive a threaded rod to rotate so as to feed a drill bit for grinding, a ball rotates to a chip groove of the drill bit, the ball is clamped in an initial chip groove of the drill bit, and the initial positioning effect is achieved; the cutter end of the drill bit is ground, the length of the drill bit and the spiral length of a chip groove of the drill bit serve as initial numerical values, and the spiral precession direction of the chip groove and the spiral starting angle of the chip groove serve as reference data values; the cutter end of the drill bit is ground better, the geometrical shape of the drill bit is restored or adjusted, the cutting performance of the drill bit is guaranteed, and the cutting edge sharpening angle of the cutter end of the drill bit can be controlled.

Description

Technical Field

[0001] The invention relates to the technical field of drill bit grinding, and in particular to a grinding device and method for drill bit production. Background Art

[0002] In the modern drill manufacturing process, the grinding device is one of the key equipment and undertakes the important task of ensuring the drill bit geometry and cutting performance. However, the existing drill bit production grinding device has many shortcomings in practical applications, especially in restoring or adjusting the drill bit geometry and controlling the cutting edge angle of the drill bit tip, which seriously affects the final performance and service life of the drill bit.

[0003] Existing grinding devices for drill bit production have obvious defects in restoring or adjusting the drill bit geometry. The drill bit will lose its original geometry due to wear during use, which directly affects its cutting performance. In order to restore the drill bit's geometry, it is necessary to accurately grind various parts of the drill bit, including the main cutting edge, secondary cutting edge, spiral groove, etc. However, existing grinding devices often lack sufficient flexibility and precision, and are unable to make corresponding adjustments based on the specific wear conditions of the drill bit. For example, when the main cutting edge of the drill bit is unevenly worn, the existing grinding device may not be able to accurately restore its original sharpness and symmetry, resulting in a significant reduction in the cutting effect of the drill bit when it is used again. This problem of being unable to effectively restore the drill bit's geometry not only shortens the drill bit's service life, but also increases the company's production costs.

[0004] Existing grinding devices for drill production also have shortcomings in controlling the cutting edge angle of the drill bit blade end. The cutting edge angle of the drill bit has a crucial impact on its cutting performance. Different drill bit types and applications require different cutting angles to ensure the best cutting effect and a longer service life. However, existing grinding devices can often only provide fixed grinding parameters and cannot be dynamically adjusted according to specific needs. For example, when processing hard materials, a smaller cutting angle is required to increase the strength of the cutting edge; when processing soft materials, a larger cutting angle is required to improve cutting efficiency. Due to the lack of fine adjustment functions, existing grinding devices are often unable to meet these diverse cutting angle requirements, resulting in unstable performance of the drill bit in actual applications, and even early failure.

[0005] There is also a large gap in the degree of automation of existing grinding devices. On large-scale production lines, manual adjustment of grinding parameters is not only inefficient, but also prone to human errors. Although existing grinding devices have partially achieved automated operation, there is still much room for improvement in grinding accuracy and stability. For example, some equipment will vibrate and deviate during high-speed grinding, resulting in unsatisfactory grinding results. In addition, the low degree of automation of the equipment also increases the labor intensity of the operators, which is not conducive to the long-term development of the enterprise.

[0006] Existing grinding devices for drill production are not good at adapting to drills of different specifications. There are many types of drills, and drills of different specifications require different grinding methods and parameter settings when grinding. However, existing grinding devices can often only adapt to a few specifications of drills. For drills of other specifications, it is necessary to readjust equipment parameters or replace parts, which is not only time-consuming and labor-intensive, but also prone to improper adjustments, resulting in grinding failures or inaccurate grinding results. This lack of flexibility has forced companies to frequently stop and adjust when facing diversified orders, seriously affecting production efficiency.

[0007] Existing grinding devices also have major problems in maintenance and troubleshooting. Due to design defects and improper material selection, these devices are prone to various failures after long-term high-intensity operation, such as mechanical jamming and sensor failure. Once the equipment fails, it not only needs to be shut down for maintenance, but also incurs additional maintenance costs, which brings a considerable financial burden to the company.

[0008] Therefore, how to provide a grinding device and method for drill bit production is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0009] One object of the present invention is to provide a grinding device and method for drill bit production. The present invention starts a grinding motor, a first angle adjustment motor and a second angle adjustment motor, and manually shakes a handle, or replaces the handle with a feed motor to drive the rotation of a threaded rod to feed the drill bit for grinding. The ball rotates to the chip groove of the drill bit, so that the ball is stuck in the initial chip groove of the drill bit, which plays an initial positioning role. The end of the drill bit is ground according to the length of the drill bit itself and the spiral length of the chip groove of the drill bit as initial values. The spiral direction of the chip groove spiral and the starting angle of the chip groove spiral are all reference data values; the drill bit end is better ground, the geometric shape of the drill bit is restored or adjusted to ensure its cutting performance, and the blade sharpening angle of the drill bit end can be controlled.

[0010] A grinding device and method for producing drill bits according to an embodiment of the present invention comprises a workbench, a grinding motor, a grinding wheel, a feeding assembly, an L-shaped plate, an angle adjustment assembly, a clamping assembly and a positioning assembly, wherein the bottom of the grinding motor is fixedly mounted on the top of the workbench, the grinding wheel is fixedly mounted on the rotating shaft of the grinding motor, the bottom of the feeding assembly is fixedly mounted on the top of the workbench, the bottom of the L-shaped plate is fixedly mounted on the top of the feeding assembly, the angle adjustment assembly is rotatably mounted on the L-shaped plate, the clamping assembly is fixedly mounted on the angle adjustment assembly, and the positioning assembly is fixedly mounted on the angle adjustment assembly;

[0011] The positioning assembly includes a positioning cylinder, a bearing frame, a ball, an induction coil and a permanent magnet column, wherein the bearing frame is fixedly mounted on the positioning cylinder, the ball is rotatably mounted in the bearing frame, the induction coil is fixedly mounted in the positioning cylinder, and the permanent magnet column is located inside the positioning cylinder at one end away from the ball.

[0012] Furthermore, a movable groove is provided on the outer surface of the workbench.

[0013] Furthermore, the feed assembly includes a slide, a crank, a threaded rod and a slide, wherein the bottom of the slide is fixedly mounted on the top of the workbench, the crank is rotatably mounted on the slide, the threaded rod is rotatably mounted on the slide, the threaded rod is fixedly mounted on the crank, the slide is slidably sleeved on the slide, and the slide is threadably sleeved on the threaded rod.

[0014] Furthermore, the angle adjustment assembly includes a first angle adjustment motor, a U-shaped frame and a rotating drum, wherein the base of the first angle adjustment motor is fixedly mounted on the L-shaped plate, the closed end of the U-shaped frame is fixedly mounted on the rotating shaft of the first angle adjustment motor, and both ends of the rotating drum are rotatably mounted on the U-shaped frame.

[0015] Furthermore, the angle adjustment assembly also includes a second angle adjustment motor, an angle adjustment gear and an angle adjustment gear ring, wherein the base of the second angle adjustment motor is fixedly mounted on the U-shaped frame, the angle adjustment gear is fixedly mounted on the rotating shaft of the second angle adjustment motor, the angle adjustment gear ring is fixedly mounted on the outer wall of the rotating drum, and the angle adjustment gear is meshed with the angle adjustment gear ring.

[0016] Furthermore, the clamping assembly includes a support, a first hydraulic telescopic rod and an angle expansion plate, wherein one end of the support is fixedly mounted on both ends of the rotating drum, the non-telescopic end of the first hydraulic telescopic rod is fixedly mounted on the support, and the angle expansion plate is fixedly mounted on the telescopic end of the first hydraulic telescopic rod.

[0017] Furthermore, the clamping assembly also includes a second hydraulic telescopic rod and a flat plate, the second hydraulic telescopic rod is fixedly mounted on the rotating drum, and the flat plate is fixedly mounted on the telescopic end of the second hydraulic telescopic rod.

[0018] Furthermore, six second hydraulic telescopic rods are provided, and each three of the six second hydraulic telescopic rods form a group, and two groups of second hydraulic telescopic rods are symmetrically arranged.

[0019] Furthermore, the positioning assembly also includes a positioning sleeve, a clamping spring and a support column, wherein the positioning sleeve is fixedly mounted on the rotating cylinder, the clamping spring is installed in the positioning sleeve, one end of the support column is fixedly mounted on the inner bottom of the positioning sleeve, the other end of the support column is fixedly mounted on the permanent magnet column, and the positioning sleeve is slidably sleeved on one end of the positioning cylinder away from the bearing frame.

[0020] Further, the drill bit grinding steps:

[0021] Step 1: Place the drill bit inside the rotating drum, start the first hydraulic telescopic rod and the second hydraulic telescopic rod to extend, and drive the angle expansion plate and the plane plate to pre-tighten and clamp the drill bit;

[0022] Step 2: The positioning sleeve, the tightening spring and the positioning cylinder drive the ball bearing, and the drill bit is manually rotated so that the chip groove of the drill bit rotates to the ball bearing, so that the ball bearing is stuck in the initial chip groove of the drill bit, which plays the role of initial positioning and grinds the blade end of the drill bit;

[0023] Step 3: The length of the drill bit and the length of the chip flute spiral of the drill bit are taken as the initial values, and the spiral direction of the chip flute spiral and the starting angle of the chip flute spiral are all reference data values;

[0024] Step 4: Start the grinding motor. The grinding motor and the rotating shaft of the grinding wheel drive the grinding wheel. Start the rotation of the first angle adjustment motor and the second angle adjustment motor. The rotation of the first angle adjustment motor drives the rotation of the drum in the length direction. The rotation of the second angle adjustment motor drives the rotation of the drum in the axial direction. The drill bit is ground in coordination with the rotation of the grinding wheel.

[0025] Step 5: Set the rotation parameters of the grinding motor, the first angle adjustment motor and the second angle adjustment motor to effectively grind the drill bit tip.

[0026] The beneficial effects of the present invention are:

[0027] The present invention starts a grinding motor, a first angle adjustment motor and a second angle adjustment motor, and manually shakes a handle, or replaces the handle with a feed motor to drive the rotation of a threaded rod, for feeding a drill bit for grinding. The ball rotates to the chip groove of the drill bit, so that the ball is stuck in the initial chip groove of the drill bit, which plays a role in initial positioning. The end of the drill bit is ground, and the length of the drill bit itself and the spiral length of the chip groove of the drill bit are taken as initial values. The spiral direction of the chip groove spiral and the starting angle of the chip groove spiral are all reference data values. The end of the drill bit is better ground, and the geometric shape of the drill bit is restored or adjusted to ensure its cutting performance, and the cutting angle of the blade of the end of the drill bit can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of a grinding device for drill bit production proposed by the present invention;

[0030] Figure 2 This is a schematic structural diagram of a positioning sleeve of a grinding device for drill bit production proposed by the present invention;

[0031] Figure 3 The present invention is a cross-sectional view of a positioning cylinder of a grinding device for drill bit production proposed by the present invention.

[0032] In the figure: 1. workbench; 1.1. movable groove; 2. grinding motor; 3. grinding wheel; 4. feeding assembly; 4.1. slide; 4.2. crank handle; 4.3. threaded rod; 4.4. slide; 5. L-shaped plate; 6. angle adjustment assembly; 6.1. first angle adjustment motor; 6.2. U-shaped frame; 6.3. rotating drum; 6.4. second angle adjustment motor; 6.5. angle adjustment gear; 6.6. angle adjustment gear ring; 7. clamping assembly; 7.1. support; 7.2. first hydraulic telescopic rod; 7.3. expansion plate; 7.4. second hydraulic telescopic rod; 7.5. plane plate; 8. positioning assembly; 8.1. positioning cylinder; 8.2. bearing frame; 8.3. ball; 8.4. induction coil; 8.5. permanent magnet column; 8.6. positioning sleeve; 8.7. tightening spring; 8.8. support column. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] Please refer to Figures 1 to 3The present invention provides a grinding device and method for drill bit production, including a workbench 1, a grinding motor 2, a grinding wheel 3, a feeding assembly 4, an L-shaped plate 5, an angle adjustment assembly 6, a clamping assembly 7 and a positioning assembly 8, wherein the bottom of the grinding motor 2 is fixedly mounted on the top of the workbench 1, the grinding wheel 3 is fixedly mounted on the rotating shaft of the grinding motor 2, the bottom of the feeding assembly 4 is fixedly mounted on the top of the workbench 1, the bottom of the L-shaped plate 5 is fixedly mounted on the top of the feeding assembly 4, the angle adjustment assembly 6 is rotatably mounted on the L-shaped plate 5, the clamping assembly 7 is fixedly mounted on the angle adjustment assembly 6, the positioning assembly 8 is fixedly mounted on the angle adjustment assembly 6, and a movable groove 1.1 is provided on the outer surface of the workbench 1.

[0035] Specifically, the feed assembly 4 includes a slide 4.1, a crank 4.2, a threaded rod 4.3 and a slide 4.4, wherein the bottom of the slide 4.1 is fixedly mounted on the top of the workbench 1, the crank 4.2 is rotatably mounted on the slide 4.1, the threaded rod 4.3 is rotatably mounted on the slide 4.1, the threaded rod 4.3 is fixedly mounted on the crank 4.2, the slide 4.4 is slidably sleeved on the slide 4.1, and the slide 4.4 is threadedly sleeved on the threaded rod 4.3.

[0036] More specifically, the angle adjustment component 6 includes a first angle adjustment motor 6.1, a U-shaped frame 6.2 and a rotating drum 6.3, wherein the base of the first angle adjustment motor 6.1 is fixedly mounted on the L-shaped plate 5, the closed end of the U-shaped frame 6.2 is fixedly mounted on the rotating shaft of the first angle adjustment motor 6.1, and both ends of the rotating drum 6.3 are rotatably mounted on the U-shaped frame 6.2. The angle adjustment component 6 also includes a second angle adjustment motor 6.4, an angle adjustment gear 6.5 and an angle adjustment gear ring 6.6, wherein the base of the second angle adjustment motor 6.4 is fixedly mounted on the U-shaped frame 6.2, the angle adjustment gear 6.5 is fixedly mounted on the rotating shaft of the second angle adjustment motor 6.4, the angle adjustment gear ring 6.6 is fixedly mounted on the outer wall of the rotating drum 6.3, and the angle adjustment gear 6.5 is meshed with the angle adjustment gear ring 6.6.

[0037] More specifically, the clamping assembly 7 includes a support 7.1, a first hydraulic telescopic rod 7.2 and an angle expansion plate 7.3, wherein one end of the support 7.1 is fixedly mounted on both ends of the rotating drum 6.3, the non-telescopic end of the first hydraulic telescopic rod 7.2 is fixedly mounted on the support 7.1, and the angle expansion plate 7.3 is fixedly mounted on the telescopic end of the first hydraulic telescopic rod 7.2. The clamping assembly 7 also includes a second hydraulic telescopic rod 7.4 and a plane plate 7.5, the second hydraulic telescopic rod 7.4 is fixedly mounted on the rotating drum 6.3, the plane plate 7.5 is fixedly mounted on the telescopic end of the second hydraulic telescopic rod 7.4, and six second hydraulic telescopic rods 7.4 are arranged, and each of the six second hydraulic telescopic rods 7.4 is a group of three, and the two groups of second hydraulic telescopic rods 7.4 are symmetrically arranged.

[0038] More specifically, the positioning assembly 8 includes a positioning cylinder 8.1, a bearing frame 8.2, a ball 8.3, an induction coil 8.4 and a permanent magnet column 8.5, wherein the bearing frame 8.2 is fixedly mounted on the positioning cylinder 8.1, the ball 8.3 is rotatably mounted in the bearing frame 8.2, the ball 8.3 is used to be stuck in the initial notch of the chip groove of the drill bit, the induction coil 8.4 is fixedly mounted in the positioning cylinder 8.1, the permanent magnet column 8.5 is located inside the end of the positioning cylinder 8.1 away from the ball 8.3, the positioning assembly 8 also includes a positioning sleeve 8.6, a tightening spring 8.7 and a support column 8.8, wherein the positioning sleeve 8.6 is fixedly mounted on the rotating cylinder 6.3, the tightening spring 8.7 is installed in the positioning sleeve 8.6, one end of the support column 8.8 is fixedly mounted on the inner bottom of the positioning sleeve 8.6, the other end of the support column 8.8 is fixedly mounted on the permanent magnet column 8.5, and the positioning sleeve 8.6 is slidably sleeved on the end of the positioning cylinder 8.1 away from the bearing frame 8.2.

[0039] Furthermore, the drill bit is inserted into the inside of the rotating drum 6.3, the first hydraulic telescopic rod 7.2 and the second hydraulic telescopic rod 7.4 are started to extend, so that the angle expansion plate 7.3 and the plane plate 7.5 are clamped, the drill bit is pushed and rotated, so that the ball 8.3 moves to the initial notch of the chip groove of the drill bit, and the first hydraulic telescopic rod 7.2 and the second hydraulic telescopic rod 7.4 are started again to firmly clamp the drill bit.

[0040] Start the grinding motor 2, the rotation of the grinding motor 2 drives the grinding wheel 3 to rotate, and the threaded rod 4.3 is driven to rotate by manually shaking the crank handle 4.2, or the crank handle 4.2 is replaced by a feed motor, and the forward or reverse rotation of the threaded rod 4.3 drives the slide 4.4 to move back and forth along the slide 4.1, and then the first angle adjustment motor 6.1 is started to adjust the angle rotation of the U-shaped frame 6.2, and then the rotation of the second angle adjustment motor 6.4 is started to drive the rotation of the angle adjustment gear 6.5, and the angle adjustment gear 6.5 is meshed with the angle adjustment gear ring 6.6, and the rotation of the angle adjustment gear 6.5 drives the rotation of the angle adjustment gear ring 6.6, and the rotation of the angle adjustment gear ring 6.6 drives the rotation of the rotating drum 6.3, and the rotation of the rotating drum 6.3 drives the support 7.1, the first hydraulic telescopic rod 7.2, the expansion angle plate 7.3, the second hydraulic telescopic rod 7.4, the plane plate 7.5 and the positioning assembly 8 to follow the rotation of the rotating drum 6.3.

[0041] The ball 8.3 rotates to the chip groove of the drill bit so that the ball 8.3 is stuck in the initial chip groove of the drill bit, which plays the role of initial positioning. The tool end of the drill bit is ground. The length of the drill bit itself and the length of the chip groove spiral of the drill bit are taken as the initial values. The spiral direction of the chip groove spiral and the starting angle of the chip groove spiral are all reference data values.

[0042] Better grinding of the drill bit tip, restoration or adjustment of the drill bit geometry to ensure its cutting performance, and control of the cutting edge angle of the drill bit tip.

[0043] The present invention provides a method for producing a drill bit by grinding a device, the drill bit grinding steps are:

[0044] Step 1: Place the drill bit inside the rotating drum 6.3, start the first hydraulic telescopic rod 7.2 and the second hydraulic telescopic rod 7.4 to extend, and drive the angle expansion plate 7.3 and the plane plate 7.5 to pre-tighten and clamp the drill bit;

[0045] Step 2: The positioning sleeve 8.6, the tightening spring 8.7 and the positioning cylinder 8.1 drive the ball 8.3, and the drill bit is manually rotated so that the chip groove of the drill bit rotates to the ball 8.3, so that the ball 8.3 is stuck in the initial chip groove of the drill bit, which plays the role of initial positioning and grinds the blade end of the drill bit;

[0046] Step 3: The length of the drill bit and the length of the chip flute spiral of the drill bit are taken as the initial values, and the spiral direction of the chip flute spiral and the starting angle of the chip flute spiral are all reference data values;

[0047] Step 4, start the grinding motor 2, the grinding motor 2 and the rotating shaft of the grinding wheel 3 drive the grinding wheel 3, start the rotation of the first angle adjustment motor 6.1 and the second angle adjustment motor 6.4, the rotation of the first angle adjustment motor 6.1 drives the rotation of the rotating drum 6.3 in the length direction, and the rotation of the second angle adjustment motor 6.4 drives the rotation of the rotating drum 6.3 in the axial direction, and the rotation of the grinding wheel 3 is coordinated to grind the drill bit;

[0048] Step 5: Set the rotation parameters of the grinding motor 2, the first angle adjustment motor 6.1 and the second angle adjustment motor 6.4 to effectively grind the drill bit end.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grinding device and method for drill bit production, characterized in that: It comprises a workbench (1), a grinding motor (2), a grinding wheel (3), a feeding assembly (4), an L-shaped plate (5), an angle adjustment assembly (6), a clamping assembly (7) and a positioning assembly (8), wherein the bottom of the grinding motor (2) is fixedly mounted on the top of the workbench (1), the grinding wheel (3) is fixedly mounted on the rotating shaft of the grinding motor (2), the bottom of the feeding assembly (4) is fixedly mounted on the top of the workbench (1), the bottom of the L-shaped plate (5) is fixedly mounted on the top of the feeding assembly (4), the angle adjustment assembly (6) is rotatably mounted on the L-shaped plate (5), the clamping assembly (7) is fixedly mounted on the angle adjustment assembly (6), and the positioning assembly (8) is fixedly mounted on the angle adjustment assembly (6); The positioning assembly (8) comprises a positioning cylinder (8.1), a bearing frame (8.2), a ball (8.3), an induction coil (8.4) and a permanent magnet column (8.5), wherein the bearing frame (8.2) is fixedly mounted on the positioning cylinder (8.1), the ball (8.3) is rotatably mounted in the bearing frame (8.2), the induction coil (8.4) is fixedly mounted in the positioning cylinder (8.1), and the permanent magnet column (8.5) is located inside the end of the positioning cylinder (8.1) away from the ball (8.3).

2. A grinding device and method for producing drill bits according to claim 1, characterized in that: The outer surface of the workbench (1) is provided with a movable groove (1.1).

3. A grinding device and method for producing drill bits according to claim 1, characterized in that: The feeding assembly (4) comprises a slide (4.1), a crank (4.2), a threaded rod (4.3) and a slide (4.4), wherein the bottom of the slide (4.1) is fixedly mounted on the top of the workbench (1), the crank (4.2) is rotatably mounted on the slide (4.1), the threaded rod (4.3) is rotatably mounted on the slide (4.1), the threaded rod (4.3) is fixedly mounted on the crank (4.2), the slide (4.4) is slidably sleeved on the slide (4.1), and the slide (4.4) is threadably sleeved on the threaded rod (4.3).

4. A grinding device and method for producing drill bits according to claim 1, characterized in that: The angle adjustment component (6) comprises a first angle adjustment motor (6.1), a U-shaped frame (6.2) and a rotating drum (6.3), wherein the base of the first angle adjustment motor (6.1) is fixedly mounted on the L-shaped plate (5), the closed end of the U-shaped frame (6.2) is fixedly mounted on the rotating shaft of the first angle adjustment motor (6.1), and the two ends of the rotating drum (6.3) are rotatably mounted on the U-shaped frame (6.2).

5. A grinding device and method for producing drill bits according to claim 4, characterized in that: The angle adjustment assembly (6) further comprises a second angle adjustment motor (6.4), an angle adjustment gear (6.5) and an angle adjustment gear ring (6.6), wherein the base of the second angle adjustment motor (6.4) is fixedly mounted on the U-shaped frame (6.2), the angle adjustment gear (6.5) is fixedly mounted on the rotating shaft of the second angle adjustment motor (6.4), the angle adjustment gear ring (6.6) is fixedly mounted on the outer wall of the rotating drum (6.3), and the angle adjustment gear (6.5) is meshed with the angle adjustment gear ring (6.6).

6. A grinding device and method for producing drill bits according to claim 1, characterized in that: The clamping assembly (7) comprises a support (7.1), a first hydraulic telescopic rod (7.2) and an angle expansion plate (7.3), wherein one end of the support (7.1) is fixedly mounted on both ends of a rotating drum (6.3), a non-telescopic end of the first hydraulic telescopic rod (7.2) is fixedly mounted on the support (7.1), and the angle expansion plate (7.3) is fixedly mounted on the telescopic end of the first hydraulic telescopic rod (7.2).

7. A grinding device and method for producing drill bits according to claim 6, characterized in that: The clamping assembly (7) further comprises a second hydraulic telescopic rod (7.4) and a flat plate (7.5); the second hydraulic telescopic rod (7.4) is fixedly mounted on the rotating drum (6.3); and the flat plate (7.5) is fixedly mounted on the telescopic end of the second hydraulic telescopic rod (7.4).

8. A grinding device and method for producing drill bits according to claim 7, characterized in that: Six second hydraulic telescopic rods (7.4) are provided, and three of the six second hydraulic telescopic rods (7.4) form a group, and two groups of second hydraulic telescopic rods (7.4) are symmetrically arranged.

9. A grinding device and method for producing drill bits according to claim 1, characterized in that: The positioning assembly (8) also includes a positioning sleeve (8.6), a clamping spring (8.7) and a support column (8.8), wherein the positioning sleeve (8.6) is fixedly mounted on the rotating cylinder (6.3), the clamping spring (8.7) is mounted in the positioning sleeve (8.6), one end of the support column (8.8) is fixedly mounted on the inner bottom of the positioning sleeve (8.6), the other end of the support column (8.8) is fixedly mounted on the permanent magnet column (8.5), and the positioning sleeve (8.6) is slidably sleeved on one end of the positioning cylinder (8.1) away from the bearing frame (8.2).

10. A grinding device and method for producing drill bits according to claim 1, characterized in that: Steps for grinding drill bits: Step 1: Place the drill bit inside the rotating drum (6.3), start the first hydraulic telescopic rod (7.2) and the second hydraulic telescopic rod (7.4) to extend, and drive the angle expansion plate (7.3) and the plane plate (7.5) to pre-tighten and clamp the drill bit; Step 2: The positioning sleeve (8.6), the tightening spring (8.7) and the positioning cylinder (8.1) drive the ball (8.3), and the drill bit is manually rotated so that the chip groove of the drill bit rotates to the ball (8.3), so that the ball (8.3) is stuck in the initial chip groove of the drill bit, which plays the role of initial positioning and grinds the blade end of the drill bit; Step 3: The length of the drill bit and the length of the chip flute spiral of the drill bit are taken as the initial values, and the spiral direction of the chip flute spiral and the starting angle of the chip flute spiral are all reference data values; Step 4: Start the grinding motor (2). The grinding motor (2) and the rotating shaft of the grinding wheel (3) drive the grinding wheel (3). Start the rotation of the first angle adjustment motor (6.1) and the second angle adjustment motor (6.4). The rotation of the first angle adjustment motor (6.1) drives the rotation of the rotating drum (6.3) in the length direction. The rotation of the second angle adjustment motor (6.4) drives the rotation of the rotating drum (6.3) in the axial direction. The drill bit is ground in coordination with the rotation of the grinding wheel (3). Step 5: Setting the rotation parameters of the grinding motor (2), the first angle adjustment motor (6.1) and the second angle adjustment motor (6.4) to effectively grind the drill bit tip.

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