A grinder for semi-polished drill bit and a cutting edge grinding detection method

Abstract

The invention relates to the technical field of drill bit processing, and in particular to a grinder for a semi-polished drill bit and a cutting edge grinding detection method, comprising a machine platform, a grinding assembly is arranged on the top of the machine platform, a displacement assembly is arranged on the top of the machine platform, a clamping member is arranged on the displacement assembly, the clamping member comprises a connecting shaft, a limiting cylinder is arranged at the end of the connecting shaft, a pneumatic clamping claw is arranged at the end of the limiting cylinder, the grinding assembly comprises a driving wheel, the driving wheel is connected to a driving wheel through a driving belt, a rotating shaft is commonly connected between the two driving wheels, a feed regulating member is arranged in the middle of the rotating shaft, and a grinding wheel member is arranged at one end of the rotating shaft; the invention controls the grinding wheel member and the feed regulating member to perform adaptive adjustment according to different conditions of the drill bit by introducing the pressure value when the cutting edge portion contacts the grinding portion and the temperature value during the grinding process, so as to avoid the cutting edge portion and the grinding portion generating a large amount of grinding heat, which causes the cutting edge portion to be burned.

Description

Technical Field

[0001] The invention relates to the technical field of drill bit processing, and in particular to a grinder for a semi-polished drill bit and a cutting edge grinding detection method. Background Art

[0002] During the hole processing process, the drill bit cutting edge will be worn to varying degrees due to factors such as cutting force, cutting heat and the hardness of the workpiece material. This wear will not only affect the processing accuracy and surface quality, but also shorten the service life of the drill bit. In order to improve processing efficiency, ensure processing quality and extend the service life of the drill bit, the drill bit cutting edge needs to be regularly sharpened.

[0003] A Chinese patent with application number CN202110574053.4 discloses a drill bit cutting edge grinding device and a grinding method thereof, which relate to the field of drill bit grinding technology, including a grinding box, a grinding assembly and an adjustment assembly. When the device is in use, the grinding assembly can adjust the distance between the limit blocks according to the specifications and dimensions of the drill bit to be ground, so as to meet the fixation of drill bits of different specifications, thereby expanding the scope of application of the device. The grinding assembly of the device consists of a coarse grinding wheel, a fine grinding wheel and a cleaning roller. During the movement of the drill bit, different grinding treatments can be performed in different sections of the grinding assembly, thereby accelerating the grinding speed of the drill bit. During the grinding process of the drill bit, the screw drives the drill bit from the coarse grinding wheel to the fine grinding wheel, and finally reaches the cleaning roller position. During this process, the gear drives the drill bit to rotate 360 ​​degrees under the drive of the rack, so that each surface of the drill bit can be polished without manually changing the position of the drill bit, thereby reducing the grinding workflow and improving the grinding efficiency.

[0004] Although the existing technology can improve the grinding effect of the drill bit, a large amount of grinding heat will appear on the contact surface of the drill bit and the grinding wheel during the process of grinding the cutting edge of the drill bit, which will cause the temperature of the cutting edge area of ​​the drill bit to rise, resulting in "annealing" phenomenon, which will cause the structure of the raw material of the drill bit to change and the hardness to decrease, resulting in the drill bit being unable to work normally after grinding.

[0005] Although the prior art can use external cooling water spraying to flush and cool down, due to the high-speed rotation of the grinding wheel, most of the cooling water splashes directly and cannot reach the grinding contact surface, which makes it impossible to effectively cool down the grinding contact surface. At the same time, since the materials of the drill bits to be sharpened are different, and the grinding wheel cannot adapt to different feed rates according to the drill bit materials, when the drill bit is sharpened, a large amount of grinding heat will still appear on the contact surface between the drill bit and the grinding wheel, causing the drill bit to burn.

[0006] Therefore, it is necessary to invent a grinder for a semi-polished drill bit and a cutting edge grinding detection method to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a semi-polished drill bit grinder and a cutting edge grinding detection method to solve the technical problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A grinder for a semi-polished drill bit, comprising a machine platform, a grinding assembly for grinding a cutting edge of the drill bit is provided on the top of the machine platform, a displacement assembly is provided on the top of the machine platform, the displacement assembly and the grinding assembly do not interfere with each other, an angle adjustment member is provided on the displacement assembly, and a clamping member for clamping a drill rod of the drill bit is provided on the angle adjustment member;

[0010] The clamping member comprises a connecting shaft connected to the angle adjusting member, a limiting cylinder is provided at the end of the connecting shaft, an array of pneumatic clamping jaws are provided at the end of the limiting cylinder, and pressure sensors are provided on the inner sides of the pneumatic clamping jaws;

[0011] The grinding assembly includes a driving motor arranged on a machine platform, the output shaft of the driving motor is provided with symmetrically distributed driving wheels, the outer sides of the driving wheels are connected to driving wheels through a transmission belt, a rotating shaft is commonly connected between the two driving wheels, a feed adjustment member is provided in the middle of the rotating shaft, an end of the rotating shaft passing through the feed adjustment member is provided with a grinding wheel member distributed in an array, and the other end of the rotating shaft is provided with a conveying pipe, and the conveying pipe is communicated with the grinding wheel member.

[0012] Preferably, the grinding wheel member comprises a fixing portion, the inner ring portion of the fixing portion is provided with liquid inlet holes distributed in an array, and the fixing portion is connected to a delivery head arranged on the outer wall of the rotating shaft through the liquid inlet holes;

[0013] A grinding part is arranged on the outside of the fixing part, a liquid storage area and a cooling area are arranged inside the fixing part, a fixing ring is arranged between the liquid storage area and the cooling area, the fixing ring is connected to the fixing part, and a coolant regulating component is arranged on the fixing ring.

[0014] Preferably, the coolant regulating assembly includes drainage holes opened on the fixing ring, the drainage holes are distributed in an array along the circumference of the fixing ring, a sealing block is provided inside the drainage hole, the cross-section of the sealing block is conical, an elastic member is provided on the outside of the sealing block, one end of the elastic member is fixedly connected to the inner side of the fixing ring, and the other end of the elastic member is fixedly connected to an end of the sealing block away from the drainage hole.

[0015] Preferably, the feed adjustment member comprises a box body arranged on the top of the machine platform, a partition block is arranged inside the box body, the two driving wheels on the output shaft of the driving motor are distributed on both sides of the partition block, and the two transmission wheels on the rotating shaft are also distributed on both sides of the partition block;

[0016] A movable groove is opened in the middle of the dividing block, a hydraulic push rod is arranged inside the movable groove, a rotating ring is arranged at the output end of the hydraulic push rod, the middle part of the rotating ring is rotatably connected with the rotating shaft, and the output end of the hydraulic push rod drives the rotating shaft to move inside the movable groove through the rotating ring.

[0017] Preferably, both upper and lower sides of the partition block are provided with through grooves, the inner limit sliding connection of the through groove is provided with a sliding block, the top of the sliding block is provided with an elastic part, and the elastic part is fixedly connected to the top of the through groove;

[0018] Both sides of the sliding block are rotatably connected with rotating wheels, and the outer sides of the rotating wheels are transmission-connected with the transmission belt.

[0019] Preferably, both sides of the box body are provided with slide grooves, the length of the slide grooves is consistent with the length of the through grooves, the interiors of the two slide grooves are both limitedly slidably connected with sliders, and both ends of the rotating shaft are rotatably connected to the sliders.

[0020] Preferably, the displacement assembly includes a fixed seat, which is fixedly connected to the top of the machine platform, a limiting groove is provided on the outer side of the fixed seat, an electric screw is provided inside the fixed seat, a displacement block is transmission-connected to the middle part of the electric screw, and the displacement block is slidingly connected to the limiting groove.

[0021] Preferably, the angle adjustment member includes a rotating seat, which is arranged on the top of the displacement block. A mounting seat is provided on the top of the rotating seat. A driving shaft is provided on the mounting seat. One end of the driving shaft is connected to an external driving device. A connecting locking member is provided at the other end of the driving shaft. The driving shaft is connected to the connecting shaft via the connecting locking member.

[0022] Preferably, a protective cover is provided on the outer side of the grinding wheel member, a limit block is provided on the outer side of the protective cover, and the limit block is slidably connected to the outer side of the box body;

[0023] A temperature sensor corresponding to the grinding wheel is arranged on the inner side of the protective cover, and the temperature sensor is used to monitor the temperature of the contact surface between the drill bit and the grinding wheel.

[0024] The present invention provides a cutting edge grinding detection method, the detection method comprising the following steps:

[0025] S1. First, install the drill rod part of the drill bit on the clamping member, and make the cutting edge part of the drill bit and the central axis of the grinding part form a set angle, so that the cutting edge of the cutting edge part contacts the wheel surface of the grinding part;

[0026] S2, starting the driving motor and the driving shaft to operate, the driving motor drives the grinding wheel to grind the cutting edge of the drill bit, and the driving shaft drives the clamping member to reciprocate at a set angle, so that the cutting edge of the drill bit contacts the grinding portion;

[0027] S3. When grinding the cutting edge, coolant is delivered to the inside of the delivery pipe. The delivery pipe delivers the coolant to the cooling zone. Under the influence of the centrifugal force of the grinding wheel, the coolant flows out from the pores of the grinding part and directly acts on the contact surface between the cutting edge and the grinding part to cool the grinding surface.

[0028] S4. When the cutting edge is being sharpened, the values ​​of the pressure sensor and the temperature sensor are detected to determine whether the feed rate exceeds the tolerance of the drill bit when the sharpening part is sharpening the cutting edge, and the feed adjustment part and the grinding wheel part are controlled to make adaptive adjustments according to different situations.

[0029] Technical effects and advantages of the present invention:

[0030] 1. The present invention introduces the pressure value when the cutting edge portion contacts the grinding portion and the temperature value during the grinding process, so that the material of the drill bit can be judged in the initial stage of grinding, and the grinding wheel is controlled to grind the cutting edge portion with different feed amounts according to different materials, thereby avoiding the generation of a large amount of grinding heat between the cutting edge portion and the grinding portion due to the uncertainty of the feed amount, which causes the cutting edge portion to be burned.

[0031] 2. The present invention introduces the pressure value when the cutting edge part contacts the grinding part and the temperature value during the grinding process. At the final stage of the drill bit grinding work, it is determined whether the grinding part is blocked. By controlling the change of the position of the drill bit in different grinding intervals, the normal grinding work of the drill bit is ensured. At the same time, the sealing block is controlled to clear the blocked grinding part, so that the blocked grinding part can still be in a normal working state later. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the drill bit structure in the prior art;

[0033] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the internal structure of the box of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the grinding assembly of the present invention;

[0036] Figure 5 It is a structural schematic diagram of the feed adjustment member of the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the displacement assembly of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the grinding wheel component of the present invention;

[0039] Figure 8 It is a schematic diagram of the cross-sectional structure of the grinding wheel component of the present invention;

[0040] Fig. 9 For the present invention Figure 8 A schematic diagram of the enlarged structure at A in the middle;

[0041] Fig.10 It is a schematic diagram of the internal structure of the grinding wheel of the present invention;

[0042] Fig.11 It is a schematic diagram of the planar structure of the separator block of the present invention.

[0043] In the figure: 1, drill bit; 101, drill rod; 102, cutting edge; 2, machine; 3, displacement assembly; 301, fixed seat; 302, limit groove; 303, displacement block; 4, angle adjustment member; 401, rotating seat; 402, mounting seat; 403, driving shaft; 404, connecting locking member; 5, clamping member; 501, connecting shaft; 502, limit cylinder; 503, pneumatic clamp; 6, grinding assembly; 601, driving motor; 602, driving wheel; 603, transmission belt; 604, driving wheel; 605, rotating shaft; 606 , grinding wheel parts; 6061, fixing part; 6062, grinding part; 6063, liquid storage area; 6064, cooling area; 6065, liquid inlet hole; 6066, fixing ring; 6067, liquid discharge hole; 6068, elastic part; 6069, blocking block; 7, feed adjustment part; 701, box body; 702, partition block; 703, through groove; 704, elastic part; 705, sliding block; 706, rotating wheel; 707, movable groove; 708, hydraulic push rod; 709, rotating sleeve; 8, delivery pipe; 9, delivery head; 10, protective cover. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Reference Figures 1 to 11 As shown, a grinder for a semi-polished drill bit comprises a machine platform 2, a grinding assembly 6 for grinding a cutting edge portion 102 of a drill bit 1 is provided on the top of the machine platform 2, a displacement assembly 3 is provided on the top of the machine platform 2, the displacement assembly 3 and the grinding assembly 6 do not interfere with each other, an angle adjustment member 4 is provided on the displacement assembly 3, and a clamping member 5 for clamping a drill rod portion 101 of the drill bit 1 is provided on the angle adjustment member 4;

[0046] The displacement component 3 drives the clamping component 5 to move through the angle adjustment component 4, so that the drill bit 1 can be moved to the grinding component 6. The angle of the clamping component 5 is adjusted through the angle adjustment component 4, so that the cutting edge portion 102 of the drill bit 1 can contact the grinding component 6, so that the grinding component 6 can effectively grind the cutting edge portion 102.

[0047] The clamping member 5 includes a connecting shaft 501 connected to the angle adjusting member 4, a limiting cylinder 502 is provided at the end of the connecting shaft 501, and an array of pneumatic clamping jaws 503 are provided at the end of the limiting cylinder 502, and pressure sensors are provided on the inner sides of the pneumatic clamping jaws 503;

[0048] When the clamping member 5 clamps the drill bit 1, the staff first places the drill rod portion 101 of the drill bit 1 inside the limiting cylinder 502, and clamps and fixes the drill rod portion 101 of the drill bit 1 by the pneumatic clamp 503 to prevent the drill bit 1 from shaking due to uneven fixation when the grinding assembly 6 grinds the cutting edge portion 102 of the drill bit 1, resulting in the grinding assembly 6 being unable to effectively grind the drill bit 1.

[0049] When the grinding assembly 6 is grinding the cutting edge 102 of the drill bit 1, the material of the drill bit 1 can be obtained through the pressure value transmitted by the pressure sensor, and the feed adjustment member 7 is controlled to adjust the feed amount of the grinding assembly 6 according to the material of the drill bit 1.

[0050] The grinding assembly 6 includes a driving motor 601 arranged on the machine table 2, and a symmetrically distributed driving wheel 602 is provided on the output shaft of the driving motor 601. The outer sides of the driving wheels 602 are connected to driving wheels 604 through transmission belts 603. A rotating shaft 605 is commonly connected between the two driving wheels 604. A feed adjustment member 7 is provided in the middle of the rotating shaft 605. An end of the rotating shaft 605 that passes through the feed adjustment member 7 is provided with an array-distributed grinding wheel member 606. A conveying pipe 8 is provided at the other end of the rotating shaft 605. The conveying pipe 8 is connected to the grinding wheel member 606.

[0051] The number of delivery pipes 8 is consistent with the number of grinding wheel components 606. The external liquid supply device delivers the coolant to the interior of each grinding wheel component 606 through the delivery pipe 8. Since the grinding wheel component 606 is porous, the grinding wheel component 606 is affected by the centrifugal force of the rotating shaft 605, and the coolant that enters the interior of the grinding wheel component 606 is able to flow out from the pores of the grinding wheel component 606 and directly act on the contact surface (i.e., the grinding surface) between the cutting edge portion 102 and the grinding wheel component 606 to cool the grinding surface.

[0052] The specific actions of the grinding assembly 6 in grinding the cutting edge portion 102 of the drill bit 1 are as follows:

[0053] The driving motor 601 is started, and the driving motor 601 drives the driving wheel 602 to rotate. The driving wheel 602 drives the driving wheel 604 to rotate synchronously through the transmission belt 603. The driving wheel 604 drives the grinding wheel 606 to rotate through the rotating shaft 605. When the grinding wheel 606 rotates, the cutting edge of the drill bit 1 is sharpened;

[0054] During the operation of the driving motor 601, the feed adjustment member 7 is synchronously controlled to operate, and during the operation of the feed adjustment member 7, the rotating shaft 605 is synchronously driven to move, and during the displacement of the rotating shaft 605, the feed amount required for the grinding drill bit 1 is adjusted;

[0055] At the same time, the feed adjustment member 7 synchronously adjusts the state of the transmission belt 603 to prevent the driving wheel 602 from being unable to synchronously drive the transmission wheel 604 to rotate through the transmission belt 603 during the displacement of the rotating shaft 605.

[0056] Reference Figures 8 to 10 As shown, the grinding wheel 606 includes a fixed portion 6061, and the inner ring portion of the fixed portion 6061 is provided with array-distributed liquid inlet holes 6065, and the fixed portion 6061 is connected to the delivery head 9 disposed on the outer wall of the rotating shaft 605 through the liquid inlet holes 6065;

[0057] The delivery head 9 is connected to the delivery pipe 8, and the delivery head 9 is connected to the rotating shaft 605 by an elastic connection. When the grinding wheel 606 and the rotating shaft 605 are installed, the inner ring of the fixed part 6061 is first inserted into the rotating shaft 605, and then the delivery head 9 is squeezed by the inner ring of the fixed part 6061 and retracted into the rotating shaft 605. When the liquid inlet hole 6065 on the fixed part 6061 coincides with the delivery head 9, the delivery head 9 pops out and is inserted into the liquid inlet hole 6065.

[0058] A grinding portion 6062 is provided on the outer side of the fixing portion 6061, a liquid storage area 6063 and a cooling area 6064 are provided inside the fixing portion 6061, a fixing ring 6066 is provided between the liquid storage area 6063 and the cooling area 6064, the fixing ring 6066 is connected to the fixing portion 6061, and a coolant regulating component is provided on the fixing ring 6066.

[0059] After the delivery head 9 is connected with the liquid inlet hole 6065, the liquid storage area 6063 is in a communicating state with the delivery pipe 8, that is, the grinding wheel 606 is in a communicating state with the corresponding delivery pipe 8.

[0060] During the rotation of the grinding wheel 606, the coolant delivered by the delivery pipe 8 enters the liquid storage area 6063 through the liquid inlet hole 6065, and enters the cooling zone 6064 through the coolant regulating component on the liquid storage area 6063. Under the influence of centrifugal force, the coolant entering the cooling zone 6064 is able to flow out from the pores of the grinding portion 6062, and directly act on the contact surface (i.e., the grinding surface) between the cutting edge portion 102 and the grinding wheel 606. The coolant cools the grinding surface. During this process, the coolant regulating component regulates the flow of the coolant entering the cooling zone 6064.

[0061] Reference Figures 8 to 10 As shown, the coolant regulating assembly includes a drainage hole 6067 opened on the fixed ring 6066, and the drainage holes 6067 are distributed in an array along the circumference of the fixed ring 6066. A sealing block 6069 is provided inside the drainage hole 6067. The cross-section of the sealing block 6069 is conical, and an elastic member 6068 is provided on the outer side of the sealing block 6069. One end of the elastic member 6068 is fixedly connected to the inner side of the fixed ring 6066, and the other end of the elastic member 6068 is fixedly connected to one end of the sealing block 6069 away from the drainage hole 6067.

[0062] A magnetic block is provided inside the sealing block 6069, and an electromagnetic block is provided between two adjacent conveying heads 9. The electromagnetic block is located inside the rotating shaft 605. When it is necessary to adjust the flow of the coolant entering the cooling zone 6064, an electric current is passed into the electromagnetic block, so that the electromagnetic block generates a suction force on the magnetic block. The electromagnetic block pulls the sealing block 6069 through the magnetic block, forcing the elastic member 6068 to stretch, so that the sealing block 6069 gradually detaches from the drainage hole 6067. Since the cross-section of the sealing block 6069 is conical, the gap between the sealing block 6069 and the drainage hole 6067 gradually expands during the process of the sealing block 6069 detaching from the drainage hole 6067, thereby increasing the flow of coolant entering the cooling zone 6064 through the drainage hole 6067.

[0063] By controlling the magnitude of the current passed into the electromagnetic block, the size of the gap between the blocking block 6069 and the drain hole 6067 can be controlled, so that the flow of coolant entering the cooling zone 6064 can be accurately controlled.

[0064] Reference Figures 2 to 5As shown, the feed adjustment member 7 includes a box body 701 arranged on the top of the machine table 2, a partition block 702 is arranged inside the box body 701, two driving wheels 602 on the output shaft of the driving motor 601 are distributed on both sides of the partition block 702, and two transmission wheels 604 on the rotating shaft 605 are also distributed on both sides of the partition block 702;

[0065] The output shaft of the driving motor 601 is rotatably connected to the partition block 702, and limit plates are provided at both ends of the driving wheel 602. The limit plate at one end of the driving wheel 602 close to the partition block 702 is rotatably connected to the partition block 702; limit plates are also provided at both ends of the transmission wheel 604, and the transmission belt 603 is limited by the driving wheel 602 and the limit plates on the transmission wheel 604. When the feed amount is adjusted, the transmission belt 603 will not slip off the driving wheel 602 and the transmission wheel 604.

[0066] A movable groove 707 is opened in the middle of the partition block 702, and a hydraulic push rod 708 is arranged inside the movable groove 707. A rotating ring 709 is arranged at the output end of the hydraulic push rod 708. The middle part of the rotating ring 709 is rotatably connected with the rotating shaft 605. The output end of the hydraulic push rod 708 drives the rotating shaft 605 to move inside the movable groove 707 through the rotating ring 709.

[0067] The limit plate on the transmission wheel 604 is larger than the width of the movable groove 707. The outer ring of the rotating ring 709 is slidably connected to the middle of the movable groove 707. By controlling the extension and contraction amount of the hydraulic push rod 708, the movement of the rotating shaft 605 can be controlled, that is, the feed amount of the grinding wheel 606 when grinding the cutting edge 102 can be controlled.

[0068] Reference Figures 3 to 5 As shown, both the upper and lower sides of the dividing block 702 are provided with through grooves 703, and the internal limiting sliding connection of the through groove 703 is connected with a sliding block 705, and the top of the sliding block 705 is provided with an elastic part 704, and the elastic part 704 is fixedly connected to the top of the through groove 703; the elastic part 704 includes an elastic telescopic rod, one end of the elastic telescopic rod is fixedly connected to the sliding block 705, and the other end of the elastic telescopic rod is fixedly connected to the through groove 703.

[0069] Both sides of the sliding block 705 are rotatably connected with rotating wheels 706 , and the outer sides of the rotating wheels 706 are transmission-connected to the transmission belt 603 .

[0070] Limiting plates are also provided at both ends of the rotating wheel 706 to limit the transmission belt 603 to prevent the transmission belt 603 from slipping off the driving wheel 602 and the transmission wheel 604 when the grinding wheel 606 is adjusting the feed amount.

[0071] When the feed rate of the grinding wheel 606 is adjusted, the elastic part 704 drives the rotating wheel 706 to pull the transmission belt 603 through the sliding block 705, so that the transmission belt 603 has appropriate tension when the feed rate is adjusted to prevent the transmission belt 603 from loosening.

[0072] Reference Figure 2 As shown, slide grooves are provided on both sides of the box body 701. The slide grooves are provided on the box body 701 to avoid motion interference between the box body 701 and the displacement of the rotating shaft 605 when the feed amount of the grinding wheel 606 is adjusted. The length of the slide groove is consistent with the length of the through groove 703. The interiors of the two slide grooves are both limitedly slidably connected with sliders, and both ends of the rotating shaft 605 are rotatably connected to the sliders.

[0073] Reference Figure 2 and Figure 6 As shown, the displacement assembly 3 includes a fixed seat 301, which is fixedly connected to the top of the machine table 2. A limiting groove 302 is provided on the outer side of the fixed seat 301, and an electric screw is provided inside the fixed seat 301. A displacement block 303 is transmission-connected in the middle of the electric screw, and the displacement block 303 is slidingly connected to the limiting groove 302.

[0074] The electric screw includes a threaded screw arranged inside the fixed seat 301. An electric motor is provided at one end of the threaded screw passing through the fixed seat 301. The motor is fixedly connected to the end of the fixed seat 301. The motor drives the threaded screw to operate, and the threaded screw drives the displacement block 303 to move back and forth on the fixed seat 301, thereby changing the position of the drill bit 1.

[0075] Reference Figure 2 and Figure 6 As shown, the angle adjustment member 4 includes a rotating seat 401, which is arranged on the top of the displacement block 303. A mounting seat 402 is provided on the top of the rotating seat 401. A driving shaft 403 is provided on the mounting seat 402. One end of the driving shaft 403 is connected to an external driving device, and the other end of the driving shaft 403 is provided with a connecting locking member 404. The driving shaft 403 is connected to the connecting shaft 501 through the connecting locking member 404.

[0076] The external driving device includes a motor, a fixed end of the motor is connected to the mounting seat 402, and the output shaft of the motor is connected to the driving shaft 403. The motor is started to drive the driving shaft 403 to reciprocate within a set angle range. The driving shaft 403 drives the clamping member 5 to operate synchronously through the connecting locking member 404. The clamping member 5 drives the drill bit 1 to contact the grinding part 6062, and the grinding part 6062 grinds the cutting edge 102 of the drill bit 1.

[0077] The connecting locking member 404 includes a first connecting member arranged at the end of the driving shaft 403 and a second connecting member arranged on the connecting shaft 501. The first connecting member and the second connecting member are connected by bolts. The angle between the clamping member 5 and the driving shaft 403 is adjusted by adjusting the tightness of the bolts. Adjusting the angle between the two components by connecting the locking member 404 belongs to the prior art, so it will not be described in detail here.

[0078] The rotating seat 401 is a driving shaft for rotating the mounting seat 402 driven by electricity, which belongs to the prior art, so it will not be described in detail here.

[0079] Reference Figures 2 to 5 As shown, a protective cover 10 is provided on the outer side of the grinding wheel part 606, and a limit block is provided on the outer side of the protective cover 10, and the limit block is slidably connected to the outer side of the box body 701; by providing the limit block, it is avoided that during the operation of the grinding wheel part 606, the protective cover 10 is prevented from rotating synchronously, causing the grinding wheel part 606 to work poorly, and at the same time, it is avoided that the protective cover 10 interferes with the movement of the grinding wheel part 606 when the feed amount of the grinding wheel part 606 is adjusted.

[0080] A temperature sensor corresponding to the grinding wheel 606 is disposed on the inner side of the protective cover 10 , and the temperature sensor is used to monitor the temperature of the contact surface between the drill bit 1 and the grinding wheel 606 .

[0081] A control terminal is disposed outside the machine 2 , and a control system is disposed inside the control terminal. The control system is used to control all electrical components on the machine 2 .

[0082] When in use, the staff first places the drill rod part 101 of the drill bit 1 inside the limiting cylinder 502, and clamps the drill rod part 101 with the pneumatic clamp 503, and then controls the driving shaft 403 to rotate so that the drill rod part 101 and the central axis of the grinding part 6062 are on the same horizontal plane, and then adjusts the angle of the limiting cylinder 502 by connecting the locking piece 404, so that the cutting edge part 102 of the drill bit 1 and the central axis of the grinding part 6062 are at a set angle, so that when the grinding part 6062 grinds the cutting edge part 102, the cutting edge of the cutting edge part 102 can contact the outer surface of the grinding part 6062, meeting the requirement of "the cutting edge is leveled against the wheel surface, and the drill shaft is tilted to release the cutting angle".

[0083] After completing the angle adjustment between the cutting edge portion 102 and the grinding portion 6062, the electric screw is controlled to drive the displacement block 303 to move along the limit groove 302 on the fixed seat 301. The displacement block 303 drives the clamping member 5 to move to the grinding wheel member 606 through the angle adjustment member 4. At this time, the cutting edge portion 102 of the drill bit 1 is in contact with the grinding portion 6062 of the grinding wheel member 606.

[0084] The driving motor 601 and the driving shaft 403 are started to operate, the driving motor 601 drives the driving wheel 602 to rotate, the driving wheel 602 synchronously drives the driving wheel 604 to operate through the transmission belt 603, the driving wheel 604 drives the grinding wheel 606 to rotate through the rotating shaft 605, and the grinding wheel 606 grinds the cutting edge portion of the drill bit 1 when it rotates; the driving shaft 403 reciprocates within a set angle range, the driving shaft 403 drives the clamping member 5 to operate by connecting the locking member 404, the clamping member 5 drives the drill bit 1 to contact the grinding part 6062, and the grinding part 6062 grinds the cutting edge portion 102 of the drill bit 1, meeting the requirement of "grinding from the blade to the back, and swinging the tail up and down without tilting".

[0085] During the operation of the driving motor 601, the feed adjustment member 7 is synchronously controlled to operate. During the operation of the feed adjustment member 7, the rotating shaft 605 is driven to move. During the displacement of the rotating shaft 605, the grinding wheel member 606 is driven to move synchronously to adjust the feed amount required for grinding the drill bit 1, so that the cutting edge portion 102 of the drill bit 1 is effectively ground. The specific operation of the feed adjustment member 7 is as follows:

[0086] The hydraulic push rod 708 is controlled to push the rotating shaft 605 to move away from the driving wheel 602 at a set speed by rotating the ring 709. During the movement of the rotating shaft 605, the transmission wheel 604 is driven to move synchronously, so that the distance between the transmission wheel 604 and the drive is increased. During the movement of the transmission wheel 604, the transmission belt 603 is affected by its tension to squeeze the rotating wheel 706, forcing the sliding block 705 to slide inside the through groove 703. During the movement of the sliding block 705, the elastic part 704 is pulled synchronously, so that the transmission belt 603 has a suitable tension when the feed amount is adjusted to avoid the transmission belt 603 from loosening.

[0087] When the cutting edge portion 102 is ground, the delivery pipe 8 corresponding to the grinding wheel member 606 in contact with the cutting edge portion 102 is determined, and the external liquid supply device is controlled to deliver coolant to the delivery pipe 8. The delivery pipe 8 delivers the coolant to the liquid storage area 6063 through the liquid inlet hole 6065. The coolant entering the liquid storage area 6063 enters the cooling zone 6064 through the coolant regulating component on the fixed ring 6066. Under the influence of the centrifugal force of the grinding wheel member 606, the coolant entering the cooling zone 6064 is able to flow out from the pores of the grinding portion 6062, and directly act on the contact surface (i.e., the grinding surface) between the cutting edge portion 102 and the grinding portion 6062 to cool the grinding surface.

[0088] When the grinding portion 6062 of the grinding wheel 606 is grinding the cutting edge portion 102 of the drill bit 1, the control system can determine whether the feed amount of the grinding portion 6062 when grinding the cutting edge portion 102 exceeds the bearing range of the drill bit 1 by detecting the pressure value of the pressure sensor arranged on the pneumatic clamp 503 and the temperature value of the temperature sensor arranged on the protective cover 10.

[0089] When the control system detects that the pressure value detected by the pressure sensor on the pneumatic clamp 503 exceeds the set value, and the temperature value detected by the temperature sensor on the protective cover 10 also exceeds the set value, it indicates that the material of the drill bit 1 is a hard material, and the feed rate of the grinding part 6062 when grinding the cutting edge part 102 exceeds the tolerance range of the drill bit 1, resulting in a relative increase in the contact area between the grinding part 6062 and the cutting edge part 102, and an increase in the number of frictions between the grinding part 6062 and the cutting edge part 102 in the same time, generating more heat. At the same time, the increase in the feed rate means that the grinding part 6062 needs more force to push the cutting edge part 102, which increases the friction between the grinding part 6062 and the cutting edge part 102, resulting in an excessive pressure value detected by the pressure sensor.

[0090] It should be noted that the pressure sensor arranged on the pneumatic clamp 503 detects the pressure exerted on the drill bit 1 by the following means: when the drive shaft 403 drives the clamp 5 to reciprocate within a set angle range, if the feed amount of the grinding part 6062 increases, the pneumatic clamp 503 will drive the cutting edge part 102 to contact the grinding part 6062, and the pressure exerted on the connection between the drill rod part 101 and the pneumatic clamp 503 will increase.

[0091] When the control system detects that the material of the drill bit 1 is relatively hard, resulting in overheating of the grinding heat between the grinding part 6062 and the cutting edge part 102, the control system controls the output rate of the output end of the hydraulic push rod 708 to decrease, and the reduction value of the output rate is based on the difference between the pressure value and the temperature value, so that the feed amount of the grinding part 6062 is adapted to the material of the drill bit 1, reducing the contact area and friction between the grinding wheel 606 and the drill bit 1, thereby reducing the generation of grinding heat.

[0092] At the same time, the electromagnetic block corresponding to the grinding wheel 606 that is performing the grinding work is controlled to start, and current is passed into the electromagnetic block and continuously switched on and off, so that the sealing block 6069 continuously opens and closes the drain hole 6067, so that the coolant enters the cooling zone 6064 in the form of pulses, so that the coolant capacity inside the cooling zone 6064 changes, so that the centrifugal force exerted on the coolant in the cooling zone 6064 continuously changes, and then the coolant flows out from the grinding part 6062 in the form of pulses, and the coolant cleans the grinding chips adhered to the grinding part 6062, so as to avoid the grinding heat being more easily accumulated due to the long contact time between the abrasive particles on the grinding part 6062 and the drill bit 1 when the grinding part 6062 is grinding high-hardness materials, resulting in the softening of the grinding chips and adhesion to the grinding wheel 606.

[0093] It should be noted that: after the current is passed through the electromagnetic block, it will generate a suction force with the magnetic block. The electromagnetic block pulls the sealing block 6069 through the magnetic block, forcing the elastic member 6068 to stretch, so that the sealing block 6069 gradually detaches from the drainage hole 6067, and the gap between the sealing block 6069 and the drainage hole 6067 gradually expands, thereby increasing the flow of coolant entering the cooling zone 6064 through the drainage hole 6067; after the electromagnetic block is powered off, affected by the elastic restoring force of the elastic member 6068, the sealing block 6069 enters the drainage hole 6067 again, so that the flow of coolant entering the cooling zone 6064 returns to its original state; the elastic member 6068 includes a spring, and the elastic force of the spring is greater than the centrifugal force generated when the grinding wheel member 606 rotates.

[0094] When the control system detects that the pressure value detected by the pressure sensor on the pneumatic clamp 503 is less than or equal to the set value, but the temperature value detected by the temperature sensor on the protective cover 10 exceeds the set value, it indicates that the material of the drill bit 1 is soft material, and the feed amount of the grinding part 6062 when grinding the cutting edge part 102 exceeds the bearing range of the drill bit 1, so that the contact area between the grinding part 6062 and the cutting edge part 102 will be relatively increased, so that in the same time, the number of frictions between the grinding part 6062 and the cutting edge part 102 increases, thereby generating more heat. At the same time, because soft materials are more easily deformed and softened at high temperatures, the pressure value detected by the pressure sensor does not show a particularly obvious change.

[0095] When the control system detects that the material of the drill bit 1 is relatively hard, resulting in overheating of the grinding heat between the grinding part 6062 and the cutting edge part 102, the control system controls the output rate of the output end of the hydraulic push rod 708 to decrease. The reduction in the output rate is based on the difference between the pressure value and the temperature value, so that the feed amount of the grinding part 6062 is adapted to the material of the drill bit 1, reducing the contact area and friction between the grinding wheel 606 and the drill bit 1, thereby reducing the generation of grinding heat.

[0096] At the same time, the electromagnetic block corresponding to the grinding wheel 606 for grinding the cutting edge 102 is controlled to start, and current is passed into the electromagnetic block to expand the gap between the blocking block 6069 and the drain hole 6067, thereby increasing the flow of coolant entering the cooling zone 6064. Under the influence of centrifugal force, the flow of coolant out of the grinding part 6062 will also increase synchronously, ensuring that the coolant can fully cover the entire grinding area and take away a large amount of heat, thereby reducing the grinding temperature.

[0097] When the control system detects that the pressure value detected by the pressure sensor on the pneumatic clamp 503 changes disorderly, and the temperature value detected by the temperature sensor on the protective cover 10 exceeds the set value, it indicates that when the grinding part 6062 is grinding the cutting edge part 102, the outer surface of the grinding part 6062 is blocked. After the grinding part 6062 is blocked, the grinding force of the grinding part 6062 will increase significantly and become unstable. This unstable grinding force will directly affect the pressure distribution on the drill bit 1, thereby causing the pressure sensor reading to fluctuate unsteadily. At the same time, after the grinding part 6062 is blocked, the abrasive particles on the grinding part 6062 are covered by blockages such as grinding chips and ashes, resulting in an increase in the friction area between the abrasive particles and the workpiece, an increase in the friction coefficient, and more friction heat generated during the grinding process.

[0098] When the control system detects that the grinding part 6062 is blocked, the output end of the hydraulic push rod 708 is controlled to stop operating, and the displacement block 303 is driven to move through the electric screw. The displacement block 303 changes the position of the cutting edge 102 of the drill bit 1 on the grinding assembly 6 through the angle adjustment member 4 and the clamping member 5. For details, refer to Figure 7 As shown, assuming that the cutting edge portion 102 is in contact with the grinding portion 6062 of the S2 portion in the initial state, when the grinding portion 6062 of the S2 portion is blocked, the control system can drive the cutting edge portion 102 of the drill bit 1 to move toward the grinding portion 6062 of the S1 portion or the grinding portion 6062 of the S3 portion (preferably moving toward the grinding portion 6062 of the S3 portion) through the displacement component 3, so that the grinding portion 6062 of the S1 portion or the grinding portion 6062 of the S3 portion continues to perform grinding operation on the cutting edge portion 102 of the drill bit 1.

[0099] When the cutting edge portion 102 moves toward the grinding portion 6062 of the S3 portion, the delivery pipe 8 corresponding to the grinding portion 6062 of the S3 portion is synchronously controlled to deliver coolant to the cooling zone 6064 corresponding to the grinding portion 6062 of the S3 portion, and at the same time, the electromagnetic block corresponding to the grinding portion 6062 of the S2 portion is controlled to start and be continuously switched on and off, so that the blocking block 6069 continuously opens and closes the drain hole 6067, so that the coolant flows out of the grinding portion 6062 in the form of pulses, and the coolant cleans the grinding chips adhered to the grinding portion 6062, so that the grinding portion 6062 of the S2 portion can be used normally in subsequent work.

[0100] When the cutting edge portion 102 moves to the grinding portion 6062 of the S3 part, the control system controls the output end of the hydraulic push rod 708 to operate again, and at this time, the grinding portion 6062 of the S3 part grinds the cutting edge portion 102 of the drill bit 1.

[0101] It should be noted that: when the grinding portion 6062 of the S2 portion grinds the cutting edge portion 102 of the drill bit 1, the grinding portion 6062 may be worn. Therefore, when the cutting edge portion 102 of the drill bit 1 moves toward the grinding portion 6062 of the S3 portion, the output end of the hydraulic push rod 708 can be controlled to contract first to avoid the grinding portion 6062 of the S3 portion causing motion interference with the displacement of the cutting edge portion 102. After the cutting edge portion 102 of the drill bit 1 moves to the area corresponding to the grinding portion 6062 of the S3 portion, the output end of the hydraulic push rod 708 is controlled to extend, so that it drives the rotating shaft 605 and the output end of the hydraulic push rod 708 to grind the cutting edge portion 102 of the drill bit 1.

[0102] When the grinding wheel 606 completes the grinding of the cutting edge 102 on one side of the drill bit 1, the output end of the hydraulic push rod 708 is controlled to retract so that the grinding wheel 606 is out of contact with the cutting edge 102 on one side of the drill bit 1, and then the drive shaft 403 is controlled to stop running, and the staff rotates the drill bit 1 in the limit cylinder 502 so that the cutting edge 102 on the other side of the drill bit 1 corresponds to the grinding wheel 606, and then the grinding wheel 606 grinds the cutting edge 102.

[0103] The present invention introduces the pressure value when the cutting edge portion 102 contacts the grinding portion 6062 and the temperature value during the grinding process. In the initial stage of grinding, the material of the drill bit 1 can be determined, and the grinding wheel is controlled to grind the cutting edge portion 102 with different feed amounts according to different materials, so as to avoid a large amount of grinding heat generated between the cutting edge portion 102 and the grinding portion 6062 due to the uncertainty of the feed amount, which may cause the cutting edge portion 102 to be burned. In the final stage of the grinding of the drill bit 1, it is determined whether the grinding portion 6062 is blocked, and the normal grinding of the drill bit 1 is ensured by controlling the change of the position of the drill bit 1 in different grinding intervals. At the same time, the blocking block 6069 is controlled to clear the blocked grinding portion 6062, so that the blocked grinding portion 6062 can still be in a normal working state later.

[0104] The present invention provides a cutting edge grinding detection method, the detection method comprising the following steps:

[0105] S1, first install the drill rod portion 101 of the drill bit 1 on the clamping member 5, and make the cutting edge portion 102 of the drill bit 1 and the central axis of the grinding portion 6062 form a set angle, so that the cutting edge of the cutting edge portion 102 contacts the wheel surface of the grinding portion 6062;

[0106] S2, start the driving motor 601 and the driving shaft 403 to operate, the driving motor 601 drives the grinding wheel 606 to grind the cutting edge 102 of the drill bit 1, and the driving shaft 403 drives the clamping member 5 to reciprocate at a set angle, so that the cutting edge 102 of the drill bit 1 is in contact with the grinding portion 6062;

[0107] S3, when grinding the cutting edge portion 102, coolant is delivered to the inside of the delivery pipe 8, and the delivery pipe 8 delivers the coolant to the cooling zone 6064. Under the influence of the centrifugal force of the grinding wheel 606, the coolant flows out from the pores of the grinding portion 6062, and directly acts on the contact surface between the cutting edge portion 102 and the grinding portion 6062 to cool the grinding surface;

[0108] S4. When the cutting edge portion 102 is being sharpened, the values ​​of the pressure sensor and the temperature sensor are detected to determine whether the feed amount exceeds the tolerance range of the drill bit 1 when the sharpening unit 6062 is sharpening the cutting edge portion 102, and the feed adjustment member 7 and the grinding wheel member 606 are controlled to perform adaptive adjustments according to different situations.

[0109] Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-polished drill bit grinding machine, comprising a machine platform (2), characterized in that: A grinding assembly (6) for grinding the cutting edge portion (102) of the drill bit (1) is provided on the top of the machine platform (2); a displacement assembly (3) is provided on the top of the machine platform (2); the displacement assembly (3) and the grinding assembly (6) do not interfere with each other; an angle adjustment member (4) is provided on the displacement assembly (3); and a clamping member (5) for clamping the drill rod portion (101) of the drill bit (1) is provided on the angle adjustment member (4); The clamping member (5) comprises a connecting shaft (501) connected to the angle adjustment member (4); a limiting cylinder (502) is provided at the end of the connecting shaft (501); an array of pneumatic clamping jaws (503) are provided at the end of the limiting cylinder (502); and pressure sensors are provided on the inner sides of the pneumatic clamping jaws (503); The grinding assembly (6) comprises a driving motor (601) arranged on the machine table (2); the output shaft of the driving motor (601) is provided with symmetrically distributed driving wheels (602); the outer sides of the driving wheels (602) are connected to driving wheels (604) via driving belts (603); a rotating shaft (605) is commonly connected between the two driving wheels (604); a feed adjustment member (7) is provided in the middle of the rotating shaft (605); one end of the rotating shaft (605) passing through the feed adjustment member (7) is provided with grinding wheel members (606) distributed in an array; the other end of the rotating shaft (605) is provided with a conveying pipe (8); the conveying pipe (8) is in communication with the grinding wheel member (606); The grinding wheel component (606) comprises a fixed portion (6061), the inner ring portion of the fixed portion (6061) is provided with liquid inlet holes (6065) distributed in an array, and the fixed portion (6061) is connected to a delivery head (9) arranged on the outer wall of the rotating shaft (605) via the liquid inlet holes (6065); A grinding portion (6062) is provided on the outside of the fixing portion (6061), a liquid storage area (6063) and a cooling area (6064) are provided inside the fixing portion (6061), a fixing ring (6066) is provided between the liquid storage area (6063) and the cooling area (6064), the fixing ring (6066) is connected to the fixing portion (6061), and a coolant regulating component is provided on the fixing ring (6066); The coolant regulating component comprises a drainage hole (6067) formed on a fixing ring (6066), wherein the drainage holes (6067) are arranged in an array along the circumference of the fixing ring (6066), a sealing block (6069) is arranged inside the drainage hole (6067), the cross section of the sealing block (6069) is conical, an elastic member (6068) is arranged outside the sealing block (6069), one end of the elastic member (6068) is fixedly connected to the inner side of the fixing ring (6066), and the other end of the elastic member (6068) is fixedly connected to one end of the sealing block (6069) away from the drainage hole (6067); A magnetic block is provided inside the sealing block (6069), and an electromagnetic block is provided between two adjacent conveying heads (9). The electromagnetic block is located inside the rotating shaft (605). When it is necessary to adjust the flow rate of the coolant entering the cooling zone (6064), a current is passed into the electromagnetic block so that the electromagnetic block generates a suction force to attract the magnetic block. The electromagnetic block pulls the sealing block (6069) through the magnetic block, forcing the elastic member (6068) to stretch, so that the sealing block (6069) gradually separates from the drainage hole (6067). Since the cross section of the sealing block (6069) is conical, the gap between the sealing block (6069) and the drainage hole (6067) gradually expands during the process of the sealing block (6069) separating from the drainage hole (6067), thereby increasing the flow rate of the coolant entering the cooling zone (6064) through the drainage hole (6067). A protective cover (10) is provided on the outside of the grinding wheel member (606), a limit block is provided on the outside of the protective cover (10), and the limit block is slidably connected to the outside of the box body (701); A temperature sensor corresponding to the grinding wheel component (606) is provided on the inner side of the protective cover (10), and the temperature sensor is used to monitor the temperature of the contact surface between the drill bit (1) and the grinding wheel.

2. The semi-polished drill bit grinder according to claim 1, characterized in that: The feed adjustment member (7) comprises a box (701) arranged on the top of the machine platform (2), a partition block (702) is arranged inside the box (701), two driving wheels (602) on the output shaft of the driving motor (601) are distributed on both sides of the partition block (702), and two transmission wheels (604) on the rotating shaft (605) are also distributed on both sides of the partition block (702); A movable groove (707) is provided in the middle of the partition block (702), a hydraulic push rod (708) is provided inside the movable groove (707), a rotating collar (709) is provided at the output end of the hydraulic push rod (708), the middle part of the rotating collar (709) is rotatably connected to the rotating shaft (605), and the output end of the hydraulic push rod (708) drives the rotating shaft (605) to move inside the movable groove (707) via the rotating collar (709).

3. The semi-polished drill bit grinder according to claim 2, characterized in that: The upper and lower sides of the partition block (702) are both provided with through grooves (703); the interior of the through groove (703) is slidably connected to a sliding block (705); the top of the sliding block (705) is provided with an elastic portion (704); the elastic portion (704) is fixedly connected to the top of the through groove (703); Both sides of the sliding block (705) are rotatably connected to rotating wheels (706), and the outer sides of the rotating wheels (706) are transmission-connected to the transmission belt (603).

4. The semi-polished drill bit dresser according to claim 3, characterized in that: Slide grooves are provided on both sides of the box body (701), the length of the slide grooves being consistent with the length of the through grooves (703), and sliders are slidably connected inside the two slide grooves, and both ends of the rotating shaft (605) are rotatably connected to the sliders.

5. The semi-polished drill bit grinder according to claim 1, characterized in that: The displacement assembly (3) comprises a fixed seat (301), the fixed seat (301) being fixedly connected to the top of the machine platform (2), a limiting groove (302) being provided on the outer side of the fixed seat (301), an electric screw being provided inside the fixed seat (301), a displacement block (303) being transmission-connected to the middle part of the electric screw, and the displacement block (303) being limitedly slidably connected to the limiting groove (302).

6. The semi-polished drill bit dresser according to claim 5, characterized in that: The angle adjustment member (4) comprises a rotating seat (401), wherein the rotating seat (401) is arranged on the top of the displacement block (303), a mounting seat (402) is arranged on the top of the rotating seat (401), a driving shaft (403) is arranged on the mounting seat (402), one end of the driving shaft (403) is connected to an external driving device, and the other end of the driving shaft (403) is provided with a connecting locking member (404), and the driving shaft (403) is connected to the connecting shaft (501) via the connecting locking member (404).

7. A cutting edge grinding and testing method, the method is implemented by the semi-polished drill bit grinder according to claim 6, characterized in that: The detection method comprises the following steps: S1, firstly mounting the drill rod portion (101) of the drill bit (1) on the clamping member (5), and making the cutting edge portion (102) of the drill bit (1) and the central axis of the grinding portion (6062) form a set angle, so that the cutting edge of the cutting edge portion (102) contacts the wheel surface of the grinding portion (6062); S2, starting the driving motor (601) and the driving shaft (403) to operate, the driving motor (601) drives the grinding wheel (606) to grind the cutting edge portion (102) of the drill bit (1), and the driving shaft (403) drives the clamping member (5) to reciprocate at a set angle, so that the cutting edge portion (102) of the drill bit (1) comes into contact with the grinding portion (6062); S3, when grinding the cutting edge portion (102), coolant is transported into the delivery pipe (8), and the delivery pipe (8) transports the coolant to the cooling zone (6064). Under the influence of the centrifugal force of the grinding wheel (606), the coolant flows out from the pores of the grinding portion (6062) and directly acts on the contact surface between the cutting edge portion (102) and the grinding portion (6062) to cool the grinding surface; S4. When the cutting edge portion (102) is being sharpened, the values ​​of the pressure sensor and the temperature sensor are detected to determine whether the feed rate exceeds the tolerance range of the drill bit (1) when the sharpening portion (6062) is sharpening the cutting edge portion (102), and the feed adjustment member (7) and the grinding wheel member (606) are controlled to perform adaptive adjustments according to different situations.

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