Grinding auxiliary device for drill production

Abstract

This invention discloses a grinding auxiliary device for drill bit production, relating to the field of drill bit production technology. It includes a fixed frame, a lead screw drive device, and a sliding frame. The lead screw drive device is fixedly installed at the bottom end of the fixed frame, and the sliding frame is slidably disposed within the fixed frame and fixedly connected to the output end of the lead screw drive device, so that the lead screw drive device drives the sliding frame to move along the fixed frame. One end of the sliding frame is rotatably connected to a rotating disk, and a motor drive structure is fixedly installed on the sliding frame. This invention achieves a three-point contact constraint in the grinding area by arranging the output end of the grinding structure and two contact wheels non-collinearly along the circumference of the drill bit. This constraint serves to bear the radial grinding load and limit the lateral offset and lateral sway of the drill bit. Simultaneously, the radial auxiliary mechanism moves synchronously with the grinding structure, ensuring that the constraint position corresponds to the actual grinding position, reducing load fluctuations caused by the lag of the support position during grinding.

Description

Technical Field

[0001] This invention relates to the field of drill bit manufacturing technology, and more specifically to a grinding auxiliary device for drill bit manufacturing. Background Technology

[0002] Drilling tools are rod-shaped metal workpieces with large axial dimensions. Their production typically requires grinding of their outer circumferential surfaces to remove surface oxide layers, forming defects, and machining allowances, ensuring that the outer diameter and surface quality meet subsequent usage requirements. During grinding, the drilling tool enters the grinding station along its axial direction, and the grinding components contact the outer circumferential surface of the tool. Material removal is achieved through the rotation and feed of the grinding components. Due to the large length and high length-to-diameter ratio of drilling tools, their feed section and the portion located outside the grinding area usually require support rollers, brackets, or clamping devices for support and positional constraint.

[0003] Existing rod-shaped workpiece grinding equipment typically has one or more support components on the feed side of the grinding unit. These support wheels, brackets, or guide structures bear the weight of the workpiece and maintain its feed height. Some equipment also includes pressing or clamping components to reduce the workpiece's runout and positional changes under grinding loads. These support and clamping components are generally arranged according to the specifications of the workpiece and the predetermined processing position. The support height and clamping position are changed through mechanical adjustment or drive components, thereby maintaining the corresponding processing relationship between the workpiece and the grinding unit.

[0004] However, the axial length, outer diameter, straightness, and center of gravity of the drill bit may vary. The portion of the drill bit located between adjacent support positions is prone to elastic deflection under its own weight. The radial and tangential loads generated after the grinding components contact the drill bit can further cause lateral offset, vertical runout, or local posture changes in the drill bit. Existing support and clamping methods typically restrict the drill bit according to pre-set positions and operating states, making it difficult to maintain a suitable support and constraint state when the drill bit specifications, initial position, and grinding load change. This easily leads to fluctuations in the drill bit's axial position and grinding contact state, resulting in inconsistent local grinding amounts, dimensional deviations, and unstable grinding surface quality. Therefore, how to reduce the positional changes caused by the drill bit's own deformation and processing loads during the grinding of long-length drill bits, while maintaining the stability of the drill bit's grinding position and stress state, is a problem that needs to be solved in existing drill bit grinding processes. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding auxiliary device for drill bit production, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A grinding auxiliary device for drill bit production includes a fixed frame, a lead screw drive, and a sliding frame. The lead screw drive is fixedly installed at the bottom end of the fixed frame. The sliding frame is slidably disposed within the fixed frame and fixedly connected to the output end of the lead screw drive. The lead screw drive drives the sliding frame to move along the fixed frame. A rotating disk is rotatably connected to one end of the sliding frame. A motor drive structure is fixedly installed on the sliding frame. The output end of the motor drive structure passes through the sliding frame and is connected to the rotating disk to drive the rotating disk to rotate. A grinding structure is fixedly installed on one side of the rotating disk. The output end of the grinding structure passes through the rotating disk and extends to the other side. The side of the rotating disk closest to the output end of the grinding structure is fixedly mounted... A radial auxiliary mechanism is fixedly installed, with the output end of the grinding structure and the radial auxiliary mechanism located on opposite radial sides of the drill bit. The radial auxiliary mechanism includes a mounting base, a first hydraulic drive structure, a connecting frame, and an abutting structure. The mounting base is mounted on a rotating disk, the first hydraulic drive structure is mounted on the upper end of the mounting base, the output end of the first hydraulic drive structure passes through the mounting base and is fixedly connected to the connecting frame, and the abutting structure is rotatably connected to the bottom end of the connecting frame and is arranged radially opposite to the output end of the grinding structure along the drill bit. The abutting structure can move toward or away from the drill bit under the drive of the first hydraulic drive structure, and when it abuts against the outer circumferential surface of the drill bit, it restricts the drill bit from radially deflecting due to the grinding reaction force.

[0008] A further improvement of the technical solution of the present invention is that: the abutting structure includes two abutting wheels, which are symmetrically arranged at the bottom of the connecting frame and rotatably connected to the connecting frame; a limiting plate is fixedly connected to one side of the connecting frame, and a positioning groove is provided at the end of the mounting base near the limiting plate. The limiting plate is slidably connected in the positioning groove to limit the movement direction of the connecting frame when it moves relative to the mounting base.

[0009] By employing the above technical solution, the non-collinear distribution of two contact wheels and the output end of the grinding structure on the cross-section of the drill bit creates a three-point contact constraint relationship in the grinding area. This restricts the movement of the drill bit away from the grinding structure under radial grinding force and reduces the amplitude of lateral deflection. The two contact wheels can jointly bear the radial load transmitted by the drill bit, resulting in a relatively balanced distribution of constraint force, reducing localized force concentration caused by single-point contact, and maintaining relative stability in the drill bit's axial position and machining posture. Therefore, the impact of lateral displacement and vibration of the drill bit on the grinding contact state can be reduced, the contact pressure fluctuation between the output end of the grinding structure and the outer circumferential surface of the drill bit can be reduced, and the material removal rate at different machining positions can be kept more consistent. The rolling contact between the contact wheel and the drill bit can reduce relative motion resistance and surface drag while maintaining radial constraint; the sliding fit between the limiting plate and the positioning groove can guide the movement direction of the connecting frame, so that the two contact wheels maintain a relatively stable contact position during feeding and resetting, thereby improving the running stability of the drill bit grinding process, the consistency of machining dimensions, and the forming quality of the grinding surface.

[0010] A further improvement of the technical solution of the present invention is that: a support mechanism for supporting the drill bit is provided on the feed side of the grinding structure. The support mechanism includes two first support structures and a second support structure. The two first support structures are symmetrically arranged with respect to the second support structure, and the second support structure is located between the two first support structures. The first support structure includes a first base frame, a first limiting frame, a first lead screw structure, and a first lifting frame. The first limiting frame is fixedly installed on the top of the first base frame. The first lead screw structure is disposed on the first base frame. The lead screw end of the first lead screw structure extends along the height direction of the first limiting frame and is rotatably connected to the first limiting frame. The first lifting frame is threadedly connected to the lead screw end of the first lead screw structure and slidably connected to the first limiting frame. A support rod is fixedly connected to the upper surface of the first lifting frame. Two mounting ears are symmetrically arranged at the top of the support rod. A support wheel for supporting the drill bit is rotatably connected between the two mounting ears.

[0011] By adopting the above technical solution, the height of the support wheel can be adjusted by the first lead screw structure, enabling the first support structure to adapt to drill bits with different outer diameters and different axial heights, and maintaining a relatively stable axial posture of the drill bit before entering the grinding structure. The first limiting frame guides the lifting process of the first lifting frame, reducing the rotation of the first lifting frame with the lead screw end or lateral displacement, thus keeping the support wheel's supporting position stable. The two first support structures are arranged at intervals along the drill bit's axial direction, which reduces the equivalent overhang length of the drill bit's feed section and limits the sag and sway of the drill bit caused by its own weight or processing load. The rolling contact between the support wheel and the drill bit reduces the motion resistance during the feed process while maintaining the supporting function, thereby improving the stability of the drill bit's feed position, processing axis, and grinding process.

[0012] A further improvement of the technical solution of the present invention is that: the second support structure includes a second base frame, a second limiting frame, a second lead screw structure, and a second lifting frame. The second limiting frame is fixedly installed on the top of the second base frame. The second lead screw structure is disposed on the second base frame, and the lead screw end of the second lead screw structure extends along the height direction of the second limiting frame and is rotatably connected to the second limiting frame. The second lifting frame is threadedly connected to the lead screw end of the second lead screw structure and slidably connected to the second limiting frame. A mounting base is fixedly installed on the upper surface of the second lifting frame. A plurality of mounting grooves are spaced apart at the top of the mounting base. A lifting seat is slidably disposed in each mounting groove. The upper end of the lifting seat extends out of the corresponding mounting groove and is rotatably connected to an auxiliary roller for supporting the drill bit. A plurality of auxiliary springs abut between the bottom wall of each mounting groove and the bottom end of the corresponding lifting seat, so that the lifting seat can drive the auxiliary roller to elastically rise and fall relative to the mounting base.

[0013] By employing the above technical solution, the height of the second lifting frame can be adjusted via a second lead screw structure, enabling the second support structure to adapt to drill bits with different outer diameters and machining axis heights. Several lifting seats independently undergo elastic displacement under the action of auxiliary springs, compensating for drill bit outer diameter tolerances, straightness deviations, and local surface undulations. This ensures that multiple auxiliary rollers maintain a relatively uniform contact state with the drill bit, reducing localized stress concentration or support suspension caused by rigid supports. The second support structure supports the middle of the drill bit, shortening the unsupported span and reducing elastic deflection and positional fluctuations caused by the drill bit's own weight and grinding load, thus maintaining a relatively stable axial position. The rolling contact between the auxiliary rollers and the drill bit further reduces frictional resistance and surface drag during feed, thereby minimizing the impact of drill bit deformation and support resistance on the grinding contact state and the consistency of material removal.

[0014] A further improvement of the technical solution of the present invention is that: a pressing structure is provided on a first support structure near the output end of the grinding structure. The pressing structure includes a mounting bracket fixedly installed on the top end of the support rod. A second hydraulic drive structure is fixedly installed on the top end of the mounting bracket. The output end of the second hydraulic drive structure passes through the top wall of the mounting bracket and is fixedly connected to a sliding bracket. The two ends of the sliding bracket are slidably connected to the mounting bracket. A pressing wheel is rotatably connected to the bottom end of the sliding bracket. The pressing wheel is located above the support wheel and can move toward or away from the drill bit under the drive of the second hydraulic drive structure, so as to restrict the upward movement of the drill bit relative to the support wheel when it abuts against the outer peripheral surface of the drill bit.

[0015] The above technical solution uses a pressure roller and a support roller to create upper and lower limits for the drill bit, restricting its upward movement, jump, and vertical position fluctuations under radial grinding loads. This ensures the drill bit maintains a relatively stable axial height near the output end of the grinding structure. The pressure roller and the first support structure work together to reduce temporary separation or changes in contact position between the drill bit and the support roller, thus maintaining the feed posture of the drill bit when entering the grinding area and reducing the impact of drill bit position fluctuations on grinding contact pressure and material removal consistency. The sliding fit between the sliding bracket and the mounting bracket guides the movement direction of the pressure roller, reducing sway during the feed process. The rolling contact between the pressure roller, support roller, and drill bit maintains the limiting function while reducing feed resistance and surface drag, and allows the pressure roller structure to adapt to the continuous feed process of the drill bit.

[0016] A further improvement of the technical solution of the present invention is that a fixed clamping mechanism is provided between the grinding structure and the first support structure near the grinding structure. The fixed clamping mechanism includes a support frame fixedly installed on the ground, a top frame fixedly installed at the top of the support frame, and third hydraulic drive structures fixedly installed at both ends of the top frame. Two sliding frames are symmetrically slidably arranged inside the top frame. The output end of each third hydraulic drive structure passes through the corresponding side wall of the top frame and is fixedly connected to the corresponding sliding frame. An extrusion block is fixedly installed on the opposite side of the two sliding frames. The two extrusion blocks can move towards or away from each other with the corresponding sliding frames to clamp or release the drill bit.

[0017] The above technical solution employs a fixed clamping mechanism that clamps the drill bit on both sides near the grinding structure. This restricts the radial displacement of the drill bit under grinding loads and suppresses axial movement and circumferential rotation of the drill bit through the clamping friction between the clamping block and the drill bit, maintaining a relatively stable axial position and machining posture during grinding. The fixed clamping mechanism works in conjunction with the support mechanism, allowing the support mechanism to bear the weight of the drill bit and reduce overhang deflection, while the fixed clamping mechanism locks the position near the grinding area. This reduces grinding contact point offset and grinding load fluctuations caused by changes in drill bit position, improving the consistency of material removal at different machining positions and the stability of grinding dimensions.

[0018] A further improvement of the technical solution of the present invention is that: a guide rail is provided below the support mechanism, and a plurality of sliding seats are provided above the guide rail. The plurality of sliding seats are respectively fixedly connected to the bottom ends of the first support structure and the second support structure. A limiting bolt is threadedly connected to one side of the sliding seat, and the end of the limiting bolt extends to the inner side of the sliding seat and presses against the side wall of the guide rail.

[0019] By employing the above technical solution, the relative positions of the two first and second support structures can be adjusted according to the axial length, center of gravity, and grinding area of ​​the drill bit, through the sliding engagement of the guide rail and the sliding seat. This ensures that each support structure corresponds to the part of the drill bit that needs support, reducing the unsupported span between adjacent support positions. The limiting bolts can lock the sliding seat after position adjustment, reducing positional changes in the first and second support structures under the action of drill bit feeding and grinding loads. This improves the adaptability of the support mechanism and helps maintain the axial position and support stability of the drill bit during the grinding process.

[0020] A further improvement of the technical solution of the present invention is as follows: a control module is installed on the fixed frame; a first force sensor is set on the force transmission path at the output end of the grinding structure to detect the radial force exerted by the output end of the grinding structure on the drill bit; second force sensors are respectively set on the force transmission path between the two contact wheels and the connecting frame to detect the radial support force exerted by the two contact wheels on the drill bit; third force sensors are respectively set between the two extrusion blocks and the corresponding sliding frames to detect the clamping force exerted by the two extrusion blocks on the drill bit; the signal output ends of the first force sensor, the two second force sensors, and the two third force sensors are respectively electrically connected to the independent signal input channels corresponding to the control module, and the control module is respectively connected to the grinding structure, the first hydraulic drive structure, and the two third hydraulic drive structures.

[0021] By employing the above technical solution, which independently detects radial force, radial support force, and clamping force, the stress data of the drill bit at the grinding, support, and clamping positions can be obtained, providing a feedback basis for static auxiliary alignment before grinding and dynamic correction during the grinding process. Each sensor uses an independent signal channel, which also enables a clear correspondence between the detected data and the corresponding action points, providing data conditions for identifying abnormal stress areas.

[0022] A further improvement of the technical solution of this invention is as follows: the control module is used to perform static auxiliary alignment control before grinding; after adjusting the support height of the corresponding support wheel through the first lead screw structure and adjusting the support height of several auxiliary rollers through the second lead screw structure, the output end of the grinding structure forms a pre-contact with the drill bit entering the grinding station. The control module collects the initial contact force detected by the first force sensor and determines the target support force range based on the initial contact force; the control module controls the first hydraulic drive structure to drive the two abutment wheels to move toward the drill bit until the sum of the radial support forces detected by the two second force sensors is within the target support force range, and the difference between the two radial support forces does not exceed the preset support balance threshold; the control module then controls the two third hydraulic drive structures to drive the corresponding extrusion blocks to move synchronously toward each other until the clamping forces detected by the two third force sensors are both within the preset clamping force range, and the difference between the two clamping forces does not exceed the preset clamping balance threshold, so as to complete the static auxiliary alignment of the drill bit axis relative to the predetermined machining axis of the grinding structure.

[0023] By adopting the above technical solution, the continuous coordination of initial adjustment of support height, pre-contact of grinding end, radial support balance and double-sided clamping balance can adjust the axis height, lateral position and force state of grinding end of the drill bit before grinding, so that the axis of the drill bit is basically in correspondence with the predetermined machining axis of the grinding structure, and provides a relatively stable initial position and force conditions for dynamic support correction during the grinding process.

[0024] A further improvement of the technical solution of this invention lies in that: the control module is also used to perform dynamic correction control of grinding and identification of abnormal action parts; when the grinding structure grinds the drill bit, the control module continuously collects the radial grinding force detected by the first force sensor, the radial support force detected by two second force sensors, and the clamping force detected by two third force sensors, and determines the target support force range based on the radial grinding force; when the sum of the two radial support forces deviates from the target support force range, the control module controls the first hydraulic drive structure to adjust the radial position of the connecting frame, so that the sum of the radial support forces of the two contact wheels returns to the target support force range; when the radial grinding force exceeds the preset grinding force range, the control module... The output end of the grinding structure is identified as an abnormal operating point; when any radial support force exceeds the corresponding preset support force range, the corresponding contact wheel is identified as an abnormal operating point; when the difference between two radial support forces exceeds the preset support balance threshold, the radial auxiliary mechanism is identified as a force imbalance point; when any clamping force exceeds the corresponding preset clamping force range, the corresponding extrusion block is identified as an abnormal operating point; when the difference between two clamping forces exceeds the preset clamping balance threshold, the fixed clamping mechanism is identified as a force imbalance point; when the control module identifies an abnormal operating point or a force imbalance point, it controls the grinding structure to stop feeding and outputs the corresponding abnormal position identification signal.

[0025] By adopting the above technical solution, the radial support state of the two contact wheels can be adjusted according to the radial grinding force, which can reduce the radial offset of the drill bit or the increase in local load caused by the mismatch between the support force and the actual grinding load. By associating the independent detection channels of each force sensor with the corresponding action parts, the inspection range can be narrowed when abnormal grinding load, radial support off-center load, or double-sided clamping imbalance occurs, thus helping to determine the grinding, support, or clamping areas that need to be inspected.

[0026] By adopting the above technical solution, the technical effects achieved by this invention compared to the prior art are as follows: 1. This invention provides a grinding auxiliary device for drill bit production. By arranging the output end of the grinding structure and two contact wheels non-collinearly along the circumference of the drill bit, the three form a three-point contact constraint in the grinding area, which serves to bear the radial grinding load and limit the lateral offset and lateral swing of the drill bit. At the same time, the radial auxiliary mechanism moves synchronously with the grinding structure, which enables the constraint position to correspond to the actual grinding position, reducing the load fluctuation caused by the lag of the support position during the grinding process.

[0027] 2. This invention provides a grinding auxiliary device for drill bit production. It supports different axial positions of the drill bit through two first support structures and a second support structure, thereby shortening the unsupported span of the drill bit and reducing the elastic deflection of the drill bit due to its own weight and grinding load. By adjusting the support height of the support wheel and the auxiliary roller through the first screw structure and the second screw structure respectively, it can also adapt to the axial height requirements of drill bits with different outer diameters, providing support conditions for the initial alignment of the drill bit.

[0028] 3. This invention provides a grinding auxiliary device for drill bit production. The auxiliary spring drives the lifting seat and auxiliary rollers to lift independently and elastically, so that multiple auxiliary rollers form a distributed flexible support according to the actual position of the outer circumference of the drill bit. This achieves the effect of compensating for the outer diameter tolerance, straightness deviation and local surface undulation of the drill bit, and reduces the local stress concentration or support suspension caused by rigid support. The rolling contact between the auxiliary rollers and the drill bit can also reduce the frictional resistance during the feed process of the drill bit.

[0029] 4. This invention provides a grinding auxiliary device for drill bit production. The lower pressure wheel and support wheel form upper and lower limits on the drill bit, and the two extrusion blocks clamp the drill bit from both sides, which can limit the vertical runout, lateral offset and processing posture changes of the drill bit. By moving the sliding seat along the guide rail, the axial position of each support structure can be adjusted according to the length of the drill bit, the center of gravity position and the grinding area, which can improve the adaptability of the support mechanism to drill bits of different specifications and different processing positions.

[0030] 5. The present invention provides a grinding auxiliary device for drill bit production. The device detects radial grinding force, radial support force and clamping force by means of a first force sensor, two second force sensors and two third force sensors, and transmits each detection signal to the control module through an independent channel. This enables the force state of the grinding structure, the radial auxiliary mechanism and the fixed clamping mechanism to form a corresponding relationship with the corresponding detection data. During the tool feeding stage, the tool axis is statically assisted in alignment through continuous coordination of support height adjustment, grinding end pre-contact, radial support balance, and double-sided clamping balance. During the grinding stage, the radial position of the connecting frame is adjusted according to the radial grinding force, so that the support state of the contact wheel is corrected with the change of grinding load, thereby limiting the radial offset of the tool and reducing load fluctuation. When the grinding force, support force, or clamping force exceeds the corresponding preset range, or the difference between similar detection data exceeds the preset threshold, the abnormal force area can be identified and the inspection range can be narrowed by mapping the abnormal data to the grinding structure, the corresponding contact wheel, the radial auxiliary mechanism, the corresponding extrusion block, or the fixed clamping mechanism. At the same time, the feeding of the grinding structure is stopped to reduce the impact of the continuous action of abnormal load on the processing state. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a first-view schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a second perspective view of the overall structure of the device of the present invention; Figure 3 This is a partial structural diagram of the device of the present invention; Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle; Figure 5 This is a first-view schematic diagram of the support mechanism structure of the present invention; Figure 6 This is a second perspective view of the supporting mechanism structure of the present invention; Figure 7 This is a schematic diagram of the first support structure and the pressing structure of the present invention; Figure 8 This is a schematic diagram of the second support structure of the present invention; Figure 9 This is a schematic diagram of the fixing and clamping mechanism of the present invention; Figure 10 for Figure 8 Schematic diagram of the structure at point B.

[0033] In the diagram: 1. Fixed frame; 2. Screw drive device; 3. Sliding frame; 4. Rotary disk; 5. Motor drive structure; 6. Grinding structure; 7. Radial auxiliary mechanism; 8. Support mechanism; 9. Fixed clamping mechanism; 10. Mounting base; 11. First hydraulic drive structure; 12. Connecting frame; 13. Abutting wheel; 14. Limiting plate; 15. Positioning groove; 16. First support structure; 161. First base frame; 162. Second base frame; 17. Second support structure; 171. First limiting frame; 172. Second limiting frame; 18. Downward pressing structure; 181. 182. Second lead screw structure; 19. Support rod; 191. First lifting frame; 192. Second lifting frame; 20. Mounting ear plate; 21. Support wheel; 22. Mounting base plate; 23. Mounting groove; 24. Auxiliary spring; 25. Lifting seat; 26. Auxiliary roller; 27. Mounting frame; 28. Second hydraulic drive structure; 29. ​​Sliding bracket; 30. Lower pressure wheel; 31. Support frame; 32. Top frame; 33. Third hydraulic drive structure; 34. Sliding frame; 35. Extrusion block; 36. Guide rail; 37. Sliding seat; 38. Restricting bolt. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the embodiments.

[0035] Example 1 like Figure 1-4As shown, this invention provides a grinding auxiliary device for drill bit production, including a fixed frame 1, a lead screw drive device 2, and a sliding frame 3. The lead screw drive device 2 is fixedly installed at the bottom end of the fixed frame 1. The sliding frame 3 is slidably disposed within the fixed frame 1 and fixedly connected to the output end of the lead screw drive device 2, so that the lead screw drive device 2 drives the sliding frame 3 to move along the fixed frame 1. A rotating disk 4 is rotatably connected to one end of the sliding frame 3. A motor drive structure 5 is fixedly installed on the sliding frame 3. The output end of the motor drive structure 5 passes through the sliding frame 3 and is connected to the rotating disk 4 for transmission, so as to drive the rotating disk 4 to rotate. A grinding structure 6 is fixedly installed on one side of the rotating disk 4. The output end of the grinding structure 6 passes through the rotating disk 4 and extends to the other side. The rotating disk 4 is close to the output end of the grinding structure 6. A radial auxiliary mechanism 7 is fixedly installed on one side. The output end of the grinding structure 6 and the radial auxiliary mechanism 7 are located on the radial sides of the drill bit, respectively. The radial auxiliary mechanism 7 includes a mounting base 10, a first hydraulic drive structure 11, a connecting frame 12, and a contact structure. The mounting base 10 is installed on the rotary disk 4. The first hydraulic drive structure 11 is installed on the upper end of the mounting base 10. The output end of the first hydraulic drive structure 11 passes through the mounting base 10 and is fixedly connected to the connecting frame 12. The contact structure is rotatably connected to the bottom end of the connecting frame 12 and is arranged radially opposite to the output end of the grinding structure 6 along the drill bit. The contact structure can move toward or away from the drill bit under the drive of the first hydraulic drive structure 11, and when it abuts against the outer circumferential surface of the drill bit, it restricts the drill bit from radially deflecting due to the grinding reaction force.

[0036] In this embodiment, during operation, the lead screw drive device 2 drives the sliding frame 3 to move along the fixed frame 1, causing the rotary disk 4, grinding structure 6, and radial auxiliary mechanism 7 to move synchronously along the axial direction of the drill bit, thereby adjusting the axial machining position of the grinding structure 6. The motor drive structure 5 drives the rotary disk 4 to rotate, causing the grinding structure 6 and the radial auxiliary mechanism 7 to synchronously adjust their circumferential positions relative to the drill bit. Before grinding, the first hydraulic drive structure 11 drives the connecting frame 12 to move toward the drill bit, causing the abutting structure at the bottom of the connecting frame 12 to abut against the outer circumferential surface of the drill bit. When the output end of the grinding structure 6 performs feed grinding, the abutting structure constrains the drill bit from the radially opposite side to limit the radial displacement of the drill bit under the action of the grinding reaction force; when grinding is completed or the position is adjusted, the first hydraulic drive structure 11 drives the connecting frame 12 to move in the opposite direction, causing the abutting structure to separate from the drill bit.

[0037] When the grinding structure 6 grinds the outer peripheral surface of the drill bit, the grinding contact position generates a grinding force acting radially along the drill bit, causing the drill bit to tend to move laterally away from the grinding structure 6. After the drill bit shifts laterally, its axial position and machining posture are prone to change, which in turn causes fluctuations in the contact position and contact pressure between the grinding structure 6 and the outer peripheral surface of the drill bit, affecting the stability of the grinding process and the consistency of material removal.

[0038] like Figure 4 As shown, preferably, the abutting structure includes two abutting wheels 13, which are symmetrically arranged at the bottom end of the connecting frame 12 and are rotatably connected to the connecting frame 12. A limiting plate 14 is fixedly connected to one side of the connecting frame 12. A positioning groove 15 is provided at one end of the mounting base 10 near the limiting plate 14. The limiting plate 14 is slidably connected in the positioning groove 15 to limit the movement direction of the connecting frame 12 when it moves relative to the mounting base 10.

[0039] In this embodiment, during operation, the first hydraulic drive structure 11 drives the connecting frame 12 to move towards the drill bit, causing the two symmetrically arranged abutment wheels 13 to abut against the outer circumferential surface of the drill bit. When the output end of the grinding structure 6 feeds to the outer circumferential surface of the drill bit and performs grinding, the two abutment wheels 13 and the output end of the grinding structure 6 are located at different positions in the circumference of the drill bit, forming a three-point contact constraint relationship on the cross-section of the drill bit. When the grinding structure 6 generates radial grinding force, the two abutment wheels 13 jointly bear the radial load transmitted by the drill bit from opposite sides of the grinding structure 6 and restrict the drill bit from moving in the direction away from the grinding structure 6; the symmetrical arrangement of the two abutment wheels 13 can also restrict the drill bit from swaying to both sides, keeping the drill bit in a relatively stable axial position. During the movement of the connecting frame 12, the limiting plate 14 slides along the positioning groove 15 to guide the feed direction of the connecting frame 12; when relative movement occurs between the drill bit and the contact wheel 13, the contact wheel 13 rotates relative to the connecting frame 12, thereby reducing the sliding friction at the contact position while maintaining radial constraint.

[0040] Example 2 Because the drill bit has a large axial length, when the drill bit is ground by the grinding structure 6, the portion of the drill bit located on the feed side of the grinding structure 6 tends to form a long overhang. This overhang may undergo elastic deflection or positional fluctuations under the weight of the drill bit itself and the radial load transmitted during grinding, causing a change in the axial position of the drill bit's grinding portion relative to the grinding structure 6. This, in turn, leads to deviations in the grinding contact position and the amount of material removed. Therefore, it is necessary to support the drill bit on the feed side of the grinding structure 6 to shorten the unsupported span of the drill bit and maintain its axial position and feed posture during the grinding process.

[0041] like Figure 5 and Figure 6As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the feed side of the grinding structure 6 is provided with a support mechanism 8 for supporting the drill bit. The support mechanism 8 includes two first support structures 16 and a second support structure 17. The two first support structures 16 are symmetrically arranged with respect to the second support structure 17, and the second support structure 17 is located between the two first support structures 16. The first support structure 16 includes a first base frame 161, a first limiting frame 171, a first lead screw structure 181, and a first lifting frame 191. The first limiting frame 171 is fixedly installed on the first... At the top of a base frame 161, a first lead screw structure 181 is mounted on the base frame 161. The lead screw end of the first lead screw structure 181 extends along the height direction of the first limiting frame 171 and is rotatably connected to the first limiting frame 171. A first lifting frame 191 is threadedly connected to the lead screw end of the first lead screw structure 181 and slidably connected to the first limiting frame 171. A support rod 19 is fixedly connected to the upper surface of the first lifting frame 191. Two mounting ear plates 20 are symmetrically arranged at the top of the support rod 19. A support wheel 21 for supporting the drill bit is rotatably connected between the two mounting ear plates 20.

[0042] In this embodiment, during use, the first lead screw structure 181 is adjusted according to the outer diameter of the drill bit and the predetermined machining axis, causing the lead screw end of the first lead screw structure 181 to rotate and drive the first lifting frame 191 to rise and fall along the first limiting frame 171. The first lifting frame 191 drives the support wheel 21 to move synchronously through the support rod 19 and the mounting ear plate 20, adjusting the support wheel 21 to a support height that matches the outer circumferential surface of the drill bit. When the drill bit moves along the feeding direction of the grinding structure 6, the support wheel 21 rotates relative to the mounting ear plate 20 under the drive of the drill bit, forming a rolling support for the feeding section of the drill bit. The two first support structures 16 are respectively located on both sides of the second support structure 17 to support the drill bit at different axial positions.

[0043] Due to the large axial length of the drill bit, a long support span is easily formed on the feed side of the grinding structure 6. Even with the drill bit supported by two first support structures 16, the portion of the drill bit located between the two first support structures 16 may still experience elastic deflection or positional fluctuations under its own weight and grinding load, causing changes in the axial position of the drill bit and affecting the relative position between the drill bit and the grinding structure 6. In addition, the drill bit may have outer diameter tolerances, straightness deviations, or local surface undulations. When using rigid supports of fixed height, it is easy for some support positions to experience excessive stress or fail to make effective contact with the drill bit.

[0044] like Figure 7 , Figure 8 and Figure 10As shown, preferably, the second support structure 17 includes a second base frame 162, a second limiting frame 172, a second lead screw structure 182, and a second lifting frame 192. The second limiting frame 172 is fixedly installed on the top of the second base frame 162. The second lead screw structure 182 is disposed on the second base frame 162, and the lead screw end of the second lead screw structure 182 extends along the height direction of the second limiting frame 172 and is rotatably connected to the second limiting frame 172. The second lifting frame 192 is threadedly connected to the lead screw end of the second lead screw structure 182 and is connected to the second limiting frame 162. 72 Sliding connection; The upper surface of the second lifting frame 192 is fixedly mounted with a mounting base 22. The top of the mounting base 22 is provided with a number of mounting grooves 23 spaced apart. A lifting seat 25 is slidably arranged in each mounting groove 23. The upper end of the lifting seat 25 extends out of the corresponding mounting groove 23 and is rotatably connected to an auxiliary roller 26 for supporting the drill bit. A number of auxiliary springs 24 are abutted between the bottom wall of each mounting groove 23 and the bottom end of the corresponding lifting seat 25, so that the lifting seat 25 can drive the auxiliary roller 26 to elastically lift and lower relative to the mounting base 22.

[0045] In this embodiment, during use, the lead screw end of the second lead screw structure 182 rotates, driving the second lifting frame 192 to rise and fall along the second limiting frame 172, thereby adjusting the mounting base 22 and auxiliary rollers 26 to a support height adapted to the drill bit. After the drill bit is placed on the auxiliary rollers 26, each lifting seat 25 moves independently within the mounting groove 23 according to the load borne at its corresponding position, compressing the corresponding auxiliary spring 24. The elastic restoring force generated by the auxiliary spring 24 acts on the drill bit through the lifting seat 25 and the auxiliary rollers 26, enabling the auxiliary rollers 26 to form elastic support according to the actual position of the outer circumference of the drill bit. When the drill bit moves along the feeding direction of the grinding structure 6, the auxiliary rollers 26 rotate relative to the lifting seat 25 to provide rolling support for the drill bit.

[0046] Due to the large axial length of the drill bit, in addition to elastic deflection on the feed side of the grinding structure 6, the drill bit may also move upward or vertically jump relative to the support wheel 21 under radial grinding load and feed disturbance. Especially near the output end of the grinding structure 6, fluctuations in the axial position of the drill bit can easily change the relative position between the drill bit and the grinding structure 6, causing changes in the grinding contact state and the amount of material removed. Therefore, it is necessary to limit the drill bit vertically near the output end of the grinding structure 6 to maintain the feed posture and axial position of the drill bit.

[0047] like Figure 7As shown, preferably, a pressing structure 18 is provided on one of the first support structures 16 near the output end of the grinding structure 6. The pressing structure 18 includes a mounting bracket 27 fixedly installed on the top end of the support rod 19. A second hydraulic drive structure 28 is fixedly installed on the top end of the mounting bracket 27. The output end of the second hydraulic drive structure 28 passes through the top wall of the mounting bracket 27 and is fixedly connected to a sliding bracket 29. The two ends of the sliding bracket 29 are slidably connected to the mounting bracket 27. A pressing wheel 30 is rotatably connected to the bottom end of the sliding bracket 29. The pressing wheel 30 is located above the support wheel 21 and can move toward or away from the drill bit under the drive of the second hydraulic drive structure 28, so as to restrict the drill bit from moving upward relative to the support wheel 21 when it abuts against the outer peripheral surface of the drill bit.

[0048] In this embodiment, during operation, the second hydraulic drive structure 28 drives the sliding bracket 29 to move along the mounting frame 27, causing the lower pressure roller 30 to move towards the drill bit and abut against the upper part of the outer circumference of the drill bit. The lower pressure roller 30 and the support roller 21 located below the drill bit together form upper and lower limits on the drill bit to restrict the drill bit from moving upward relative to the support roller 21. The two ends of the sliding bracket 29 slide along the mounting frame 27, causing the lower pressure roller 30 to feed in a set direction; when the drill bit moves along the feeding direction of the grinding structure 6, the lower pressure roller 30 and the support roller 21 rotate with the drill bit. When grinding is completed or the drill bit is loaded or unloaded, the second hydraulic drive structure 28 drives the sliding bracket 29 to move in the opposite direction, causing the lower pressure roller 30 to separate from the drill bit.

[0049] Example 3 The support mechanism 8 can support long-sized drill bits, and the pressing structure 18 can limit the vertical movement and jumping of the drill bit during the grinding process through the cooperation of the pressing roller 30 and the support roller 21. However, the pressing roller 30 and the support roller 21 mainly form rolling contact with the drill bit, which lacks sufficient constraint on the lateral displacement of the drill bit in other radial directions, as well as the axial movement and circumferential rotation of the drill bit. When the grinding structure 6 applies radial grinding load and tangential grinding load to the drill bit, the position of the drill bit near the grinding area may still change laterally or shift in posture, causing fluctuations in the relative position between the drill bit and the grinding structure 6, which in turn affects the consistency of the grinding position and the amount of material removed. Therefore, it is necessary to further clamp the drill bit near the grinding structure 6 to enhance the positional constraint of the drill bit during the grinding process on the basis of the upper and lower limits formed by the pressing structure 18 and the support mechanism 8.

[0050] like Figure 9As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, a fixed clamping mechanism 9 is provided between the grinding structure 6 and the first support structure 16 near the grinding structure 6. The fixed clamping mechanism 9 includes a support frame 31 fixedly installed on the ground. A top frame 32 is fixedly installed at the top of the support frame 31. A third hydraulic drive structure 33 is fixedly installed at both ends of the top frame 32. Two sliding frames 34 are symmetrically slidably arranged inside the top frame 32. The output end of each third hydraulic drive structure 33 passes through the corresponding side wall of the top frame 32 and is fixedly connected to the corresponding sliding frame 34. A pressing block 35 is fixedly installed on the opposite side of the two sliding frames 34. The two pressing blocks 35 can move towards or away from each other with the corresponding sliding frames 34 to clamp or release the drill bit.

[0051] In this embodiment, before grinding, the two third hydraulic drive structures 33 drive the corresponding sliding frames 34 to move towards each other along the top frame 32, causing the two pressing blocks 35 to gradually approach from both sides of the drill bit and abut against the outer peripheral surface of the drill bit, thereby clamping the drill bit between the two pressing blocks 35. The top frame 32 guides the movement direction of the two sliding frames 34, and the support frame 31 transfers the load generated during the clamping process to the ground. After the drill bit completes the grinding of the corresponding area, the two third hydraulic drive structures 33 drive the corresponding sliding frames 34 to move away from each other, causing the two pressing blocks 35 to separate from the drill bit, so as to adjust or remove the drill bit.

[0052] Because different specifications of drill bits have differences in axial length, grinding area, and center of gravity, if the two first support structures 16 and the second support structure 17 are arranged in a fixed position, the span between adjacent support positions may be too large, failing to provide effective support for the easily flexible parts of the drill bit; it may also cause interference between the support positions and the clamping area or grinding area of ​​the drill bit. Therefore, it is necessary to adjust the arrangement of each support structure in the support mechanism 8 according to the length of the drill bit and the actual machining position.

[0053] like Figure 6 As shown, preferably, a guide rail 36 is provided below the support mechanism 8, and a plurality of sliding seats 37 are provided above the guide rail 36. The plurality of sliding seats 37 are fixedly connected to the bottom ends of the first support structure 16 and the second support structure 17 respectively. A limiting bolt 38 is threadedly connected to one side of the sliding seat 37, and the end of the limiting bolt 38 extends to the inner side of the sliding seat 37 and presses against the side wall of the guide rail 36.

[0054] In this embodiment, during adjustment, the limiting bolts 38 on the corresponding sliding seats 37 are loosened, separating the ends of the limiting bolts 38 from the sidewalls of the guide rail 36. Then, the sliding seats 37 are moved along the extension direction of the guide rail 36, causing each sliding seat 37 to move its corresponding first support structure 16 and second support structure 17, thereby adjusting the distance between the two first support structures 16 and the position of the second support structure 17. After the support positions are adjusted, the limiting bolts 38 are tightened, causing the ends of the limiting bolts 38 to press against the sidewalls of the guide rail 36, using the contact between them to restrict the movement of the sliding seats 37 along the guide rail 36.

[0055] Example 4 During the entry of the drill bit into the grinding station and subsequent grinding process, the grinding structure 6, the radial auxiliary mechanism 7, and the fixed clamping mechanism 9 act on different positions of the drill bit. If control is based solely on the preset stroke of each drive structure, it is difficult to determine the contact load between the grinding structure 6 and the drill bit, the radial support state of the two abutting wheels 13, and the clamping state of the two pressing blocks 35. It is also not easy to distinguish whether abnormal forces are generated at the grinding, support, or clamping parts.

[0056] like Figure 1-2 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, a control module is installed on the fixing frame 1; a first force sensor is provided on the force transmission path of the output end of the grinding structure 6 to detect the radial force exerted by the output end of the grinding structure 6 on the drill bit; second force sensors are respectively provided on the force transmission path between the two abutting wheels 13 and the connecting frame 12 to detect the radial support force exerted by the two abutting wheels 13 on the drill bit; third force sensors are respectively provided between the two pressing blocks 35 and the corresponding sliding frame 34 to detect the clamping force exerted by the two pressing blocks 35 on the drill bit; the signal output ends of the first force sensor, the two second force sensors, and the two third force sensors are respectively electrically connected to the independent signal input channel corresponding to the control module, and the control module is respectively connected to the grinding structure 6, the first hydraulic drive structure 11, and the two third hydraulic drive structures 33.

[0057] In this embodiment, during operation, the first force sensor detects the radial force exerted on the drill bit by the output end of the grinding structure 6; two second force sensors detect the radial support force of the two abutment wheels 13 respectively; and two third force sensors detect the clamping force of the two extrusion blocks 35 respectively. Each force sensor transmits the detected data to the control module through independent signal input channels, enabling the control module to distinguish the source of each detected data and control the grinding structure 6, the first hydraulic drive structure 11, and the two third hydraulic drive structures 33 according to the corresponding data.

[0058] Before the drill bit enters the grinding station, its axial position may deviate from the predetermined machining axis of the grinding structure 6 due to the influence of the drill bit's outer diameter, straightness, support height, and feed deviation. If the radial auxiliary mechanism 7 and the fixed clamping mechanism 9 operate directly according to the fixed stroke, the contact state at the grinding end may be unstable, the load on the two abutting wheels 13 may be uneven, or the clamping load on the two extrusion blocks 35 may be off-center.

[0059] like Figure 1-2 As shown, preferably, the control module is used to perform static auxiliary alignment control before grinding. After adjusting the support height of the corresponding support wheel 21 through the first lead screw structure 181 and adjusting the support height of several auxiliary rollers 26 through the second lead screw structure 182, the output end of the grinding structure 6 forms pre-contact with the drill bit entering the grinding station. The control module collects the initial contact force detected by the first force sensor and determines the target support force range based on the initial contact force. The control module controls the first hydraulic drive structure 11 to drive the two abutment wheels 13 to move toward the drill bit until the sum of the radial support forces detected by the two second force sensors is within the target support force range and the difference between the two radial support forces does not exceed the preset support balance threshold. The control module then controls the two third hydraulic drive structures 33 to drive the corresponding extrusion blocks 35 to move synchronously toward each other until the clamping forces detected by the two third force sensors are both within the preset clamping force range and the difference between the two clamping forces does not exceed the preset clamping balance threshold, so as to complete the static auxiliary alignment of the drill bit axis relative to the predetermined machining axis of the grinding structure 6.

[0060] In this embodiment, during static assisted alignment, the support height of the corresponding support rollers 21 is first adjusted by two first lead screw structures 181, and the support height of several auxiliary rollers 26 is adjusted by a second lead screw structure 182 to initially adjust the axial height of the drill bit. After the drill bit enters the grinding station, the output end of the grinding structure 6 forms pre-contact with the drill bit, and the first force sensor detects the initial contact force. The control module determines the target support force range based on the initial contact force and controls the first hydraulic drive structure 11 to drive the two contact rollers 13 to abut against the drill bit. When the sum of the radial support forces and the difference between the two radial support forces meet the preset conditions, the control module drives the two extrusion blocks 35 to move synchronously towards each other, and confirms the double-sided clamping state based on the range and difference of the two clamping forces.

[0061] During the grinding process, the feed rate of the grinding structure 6, the surface shape of the drill bit, and the material removal state will change, causing fluctuations in the radial grinding force exerted by the grinding structure 6 on the drill bit. If the radial auxiliary mechanism 7 remains fixed after the radial grinding force changes, the radial support force provided by the two contact wheels 13 may not match the actual grinding load. Insufficient radial support force can cause the drill bit to easily deviate in a direction away from the grinding structure 6; excessive radial support force may increase the local load on the drill bit and affect the normal contact between the grinding structure 6 and the drill bit. Therefore, it is necessary to dynamically adjust the support position of the radial auxiliary mechanism 7 according to the actual force state during the grinding process.

[0062] like Figure 1-2 As shown, preferably, the control module is also used to perform dynamic correction control of grinding and identification of abnormal action parts; when the grinding structure 6 grinds the drill bit, the control module continuously collects the radial grinding force detected by the first force sensor, the radial support force detected by two second force sensors, and the clamping force detected by two third force sensors, and determines the target support force range based on the radial grinding force; when the sum of the two radial support forces deviates from the target support force range, the control module controls the first hydraulic drive structure 11 to adjust the radial position of the connecting frame 12, so that the sum of the radial support forces of the two abutting wheels 13 returns to the target support force range; when the radial grinding force exceeds the preset grinding force range, the control module adjusts the grinding structure The output of 6 is identified as an abnormal action point; when any radial support force exceeds the corresponding preset support force range, the corresponding abutment wheel 13 is identified as an abnormal action point; when the difference between two radial support forces exceeds the preset support balance threshold, the radial auxiliary mechanism 7 is identified as a force imbalance point; when any clamping force exceeds the corresponding preset clamping force range, the corresponding extrusion block 35 is identified as an abnormal action point; when the difference between two clamping forces exceeds the preset clamping balance threshold, the fixed clamping mechanism 9 is identified as a force imbalance point; when the control module identifies an abnormal action point or a force imbalance point, it controls the grinding structure 6 to stop feeding and outputs the corresponding abnormal position identification signal.

[0063] In this embodiment, during grinding, the control module continuously collects the radial grinding force, two radial support forces, and two clamping forces, and determines the target support force range based on the current radial grinding force. When the sum of the two radial support forces is lower than the target support force range, the control module drives the connecting frame 12 to move towards the drill bit; when the sum of the radial support forces is higher than the target support force range, the control module drives the connecting frame 12 to move away from the drill bit, so that the radial support state of the two contact wheels 13 is adjusted according to the grinding load. The control module simultaneously monitors the numerical range of each detection data point and the differences between similar detection data points. When the detection value of the first force sensor is abnormal, the control module maps the abnormal area to the output end of the grinding structure 6; when the detection value of a single second force sensor is abnormal, the abnormal area is mapped to the corresponding abutment wheel 13; when the difference between two radial support forces is abnormal, the abnormal area is mapped to the radial auxiliary mechanism 7; when the detection value of a single third force sensor is abnormal, the abnormal area is mapped to the corresponding pressing block 35; when the difference between two clamping forces is abnormal, the abnormal area is mapped to the fixed clamping mechanism 9. The control module then stops the feed of the grinding structure 6 and outputs the corresponding abnormal position identification signal.

[0064] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A grinding auxiliary device for drill bit production, comprising a fixed frame (1), a lead screw drive device (2), and a sliding frame (3), wherein the lead screw drive device (2) is fixedly installed at the bottom end of the fixed frame (1), and the sliding frame (3) is slidably disposed within the fixed frame (1) and fixedly connected to the output end of the lead screw drive device (2), so that the sliding frame (3) is driven by the lead screw drive device (2) to move along the fixed frame (1), characterized in that: One end of the sliding frame (3) is rotatably connected to a rotating disk (4). A motor drive structure (5) is fixedly installed on the sliding frame (3). The output end of the motor drive structure (5) passes through the sliding frame (3) and is connected to the rotating disk (4) in a transmission connection to drive the rotating disk (4) to rotate. A grinding structure (6) is fixedly installed on one side of the rotating disk (4). The output end of the grinding structure (6) passes through the rotating disk (4) and extends to the other side. A radial auxiliary mechanism (7) is fixedly installed on the side of the rotating disk (4) near the output end of the grinding structure (6). The output end of the grinding structure (6) and the radial auxiliary mechanism (7) are located on the radial sides of the drill bit, respectively. The radial auxiliary mechanism (7) includes a mounting base (10), a first hydraulic drive structure (11), a connecting frame (12), and an abutment structure. The mounting base (10) is mounted on the rotary disk (4). The first hydraulic drive structure (11) is mounted on the upper end of the mounting base (10). The output end of the first hydraulic drive structure (11) passes through the mounting base (10) and is fixedly connected to the connecting frame (12). The abutment structure is rotatably connected to the bottom end of the connecting frame (12) and is arranged radially opposite to the output end of the grinding structure (6) along the drill bit. The abutment structure can move toward or away from the drill bit under the drive of the first hydraulic drive structure (11) and restricts the drill bit from radially deflecting due to the grinding reaction force when it abuts against the outer circumferential surface of the drill bit.

2. The grinding auxiliary device for drill bit production according to claim 1, characterized in that: The abutting structure includes two abutting wheels (13), which are symmetrically arranged at the bottom of the connecting frame (12) and are rotatably connected to the connecting frame (12). A limiting plate (14) is fixedly connected to one side of the connecting frame (12). A positioning groove (15) is provided at one end of the mounting base (10) near the limiting plate (14). The limiting plate (14) is slidably connected in the positioning groove (15) to limit the movement direction of the connecting frame (12) when the connecting frame (12) moves relative to the mounting base (10).

3. The grinding auxiliary device for drill bit production according to claim 2, characterized in that: The grinding structure (6) has a support mechanism (8) for supporting the drill bit on the feed side. The support mechanism (8) includes two first support structures (16) and a second support structure (17). The two first support structures (16) are symmetrically arranged with respect to the second support structure (17), and the second support structure (17) is located between the two first support structures (16). The first support structure (16) includes a first base frame (161), a first limiting frame (171), a first lead screw structure (181), and a first lifting frame (191). The first limiting frame (171) is fixedly installed on the top of the first base frame (161). A lead screw structure (181) is mounted on the first base frame (161). The lead screw end of the first lead screw structure (181) extends along the height direction of the first limiting frame (171) and is rotatably connected to the first limiting frame (171). The first lifting frame (191) is threadedly connected to the lead screw end of the first lead screw structure (181) and slidably connected to the first limiting frame (171). A support rod (19) is fixedly connected to the upper surface of the first lifting frame (191). Two mounting ears (20) are symmetrically arranged at the top of the support rod (19). A support wheel (21) for supporting the drill bit is rotatably connected between the two mounting ears (20).

4. The grinding auxiliary device for drill bit production according to claim 3, characterized in that: The second support structure (17) includes a second base frame (162), a second limiting frame (172), a second lead screw structure (182), and a second lifting frame (192). The second limiting frame (172) is fixedly installed on the top of the second base frame (162). The second lead screw structure (182) is disposed on the second base frame (162). The lead screw end of the second lead screw structure (182) extends along the height direction of the second limiting frame (172) and is rotatably connected to the second limiting frame (172). The second lifting frame (192) is threadedly connected to the lead screw end of the second lead screw structure (182) and slides against the second limiting frame (172). The second lifting frame (192) is fixedly mounted with a mounting base plate (22). The top of the mounting base plate (22) is provided with a plurality of mounting grooves (23) spaced apart. A lifting seat (25) is slidably arranged in each mounting groove (23). The upper end of the lifting seat (25) extends out of the corresponding mounting groove (23) and is rotatably connected with an auxiliary roller (26) for supporting the drill bit. A plurality of auxiliary springs (24) are abutted between the bottom wall of each mounting groove (23) and the bottom end of the corresponding lifting seat (25) so that the lifting seat (25) can drive the auxiliary roller (26) to elastically lift relative to the mounting base plate (22).

5. A grinding auxiliary device for drill bit production according to claim 4, characterized in that: A pressing structure (18) is provided on the first support structure (16) near the output end of the grinding structure (6). The pressing structure (18) includes a mounting bracket (27) fixedly installed on the top end of the support rod (19). A second hydraulic drive structure (28) is fixedly installed on the top end of the mounting bracket (27). The output end of the second hydraulic drive structure (28) passes through the top wall of the mounting bracket (27) and is fixedly connected to a sliding bracket (29). The two ends of the sliding bracket (29) are slidably connected to the mounting bracket (27). A pressing wheel (30) is rotatably connected to the bottom end of the sliding bracket (29). The pressing wheel (30) is located above the support wheel (21) and can move toward or away from the drill bit under the drive of the second hydraulic drive structure (28) to limit the upward movement of the drill bit relative to the support wheel (21) when it abuts against the outer peripheral surface of the drill bit.

6. A grinding auxiliary device for drill bit production according to claim 5, characterized in that: A fixed clamping mechanism (9) is provided between the grinding structure (6) and the first support structure (16) near the grinding structure (6). The fixed clamping mechanism (9) includes a support frame (31) fixedly installed on the ground. A top frame (32) is fixedly installed at the top of the support frame (31). A third hydraulic drive structure (33) is fixedly installed at both ends of the top frame (32). Two sliding frames (34) are symmetrically slidably arranged inside the top frame (32). The output end of each third hydraulic drive structure (33) passes through the corresponding side wall of the top frame (32) and is fixedly connected to the corresponding sliding frame (34). An extrusion block (35) is fixedly installed on the opposite side of the two sliding frames (34). The two extrusion blocks (35) can move towards or away from the corresponding sliding frames (34) to clamp or release the drill bit.

7. A grinding auxiliary device for drill bit production according to claim 6, characterized in that: The support mechanism (8) is provided with a guide rail (36) below it, and a plurality of sliding seats (37) are provided above the guide rail (36). The plurality of sliding seats (37) are respectively fixedly connected to the bottom ends of the first support structure (16) and the second support structure (17). A limiting bolt (38) is threadedly connected to one side of the sliding seat (37), and the end of the limiting bolt (38) extends to the inner side of the sliding seat (37) and presses against the side wall of the guide rail (36).

8. A grinding auxiliary device for drill bit production according to claim 7, characterized in that: A control module is installed on the fixed frame (1); a first force sensor is provided on the force transmission path of the output end of the grinding structure (6) to detect the radial force acting on the drill bit by the output end of the grinding structure (6); A second force sensor is provided on the force transmission path between the two abutting wheels (13) and the connecting frame (12) to detect the radial support force of the two abutting wheels (13) on the drill bit; a third force sensor is provided between the two pressing blocks (35) and the corresponding sliding frame (34) to detect the clamping force of the two pressing blocks (35) on the drill bit; the signal output terminals of the first force sensor, the two second force sensors and the two third force sensors are electrically connected to the independent signal input channel corresponding to the control module, and the control module is controlled and connected to the grinding structure (6), the first hydraulic drive structure (11) and the two third hydraulic drive structures (33).

9. A grinding auxiliary device for drill bit production according to claim 8, characterized in that: The control module is used to perform static auxiliary alignment control before grinding; after adjusting the support height of the corresponding support wheel (21) through the first lead screw structure (181) and adjusting the support height of several auxiliary rollers (26) through the second lead screw structure (182), the output end of the grinding structure (6) forms a pre-contact with the drill bit entering the grinding station. The control module collects the initial contact force detected by the first force sensor and determines the target support force range based on the initial contact force. The control module controls the first hydraulic drive structure (11) to drive the two abutment wheels (13) to move toward the drill bit until the sum of the radial support forces detected by the two second force sensors is within the target support force range and the difference between the two radial support forces does not exceed the preset support balance threshold. The control module then controls the two third hydraulic drive structures (33) to drive the corresponding extrusion blocks (35) to move synchronously towards each other until the clamping forces detected by the two third force sensors are both within the preset clamping force range and the difference between the two clamping forces does not exceed the preset clamping balance threshold, so as to complete the static auxiliary alignment of the drill bit axis relative to the predetermined machining axis of the grinding structure (6).

10. A grinding auxiliary device for drill bit production according to claim 9, characterized in that: The control module is also used to perform dynamic correction control of grinding and identification of abnormal action parts; when the grinding structure (6) grinds the drill bit, the control module continuously collects the radial grinding force detected by the first force sensor, the radial support force detected by the two second force sensors, and the clamping force detected by the two third force sensors, and determines the target support force range based on the radial grinding force; when the sum of the two radial support forces deviates from the target support force range, the control module controls the first hydraulic drive structure (11) to adjust the radial position of the connecting frame (12) so that the sum of the radial support forces of the two abutting wheels (13) returns to the target support force range; when the radial grinding force exceeds the preset grinding force range, the control module will grind the drill bit. The output end of the structure (6) is identified as an abnormal action part; when any of the radial support forces exceeds the corresponding preset support force range, the corresponding abutment wheel (13) is identified as an abnormal action part; when the difference between the two radial support forces exceeds the preset support balance threshold, the radial auxiliary mechanism (7) is identified as a force imbalance part; when any of the clamping forces exceeds the corresponding preset clamping force range, the corresponding extrusion block (35) is identified as an abnormal action part; when the difference between the two clamping forces exceeds the preset clamping balance threshold, the fixed clamping mechanism (9) is identified as a force imbalance part; when the control module identifies an abnormal action part or a force imbalance part, it controls the grinding structure (6) to stop feeding and outputs the corresponding abnormal position identification signal.

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