Double-hinge-seat drill bit supporting mechanism and drill bit grinding device

Abstract

The utility model discloses a double-hinge-seat drill bit supporting mechanism and a drill bit polishing device, and relates to the technical field of drill bit machining. The double-hinge-seat drill bit supporting mechanism comprises a fixing assembly, a first supporting assembly, a second supporting assembly and a driving assembly. The fixing assembly is connected with an external structure. The first supporting assembly is composed of a first hinge seat hinged to the fixing assembly and a first elastic piece connected with the first hinge seat, can move between the position for supporting the drilling part and the position away from the drilling part and provides supporting force. The second supporting assembly comprises a second hinge base hinged to the first hinge base and a second elastic piece connected with the second hinge base, moves in the supporting position and the far-away position and provides additional supporting force. The driving assembly provides third supporting force overcoming the first supporting force for the first hinge base. The fixing assembly is provided with a limiting part, when the second hinge base abuts against the limiting part, fourth supporting force overcoming the second supporting force is provided, and accurate control and stability in the operation process are guaranteed. By means of the design, the concentricity and precision in the grinding process are improved, and the deformation risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drill bit processing technology, and more specifically, to a double-hinged drill bit support mechanism and a drill bit grinding device. Background Technology

[0002] In the drill bit manufacturing industry, especially in the machining of micro-hole drill bits, precision grinding of the drilled section diameter is a crucial step. However, under current technological conditions, this process faces numerous challenges.

[0003] For micro-hole drills with smaller diameters, their delicate structure makes them highly susceptible to deformation during grinding, hindering the achievement of ideal geometric accuracy and surface finish. This deformation not only reduces the drill's working efficiency but also increases the proportion of defective products, adding to the economic burden of production.

[0004] Furthermore, during the rough grinding stage, the alignment between the cutting section and the drill shank is often unsatisfactory, with a certain deviation between their axes. This deviation causes the cutting section to wobble or shake during grinding, affecting the stability and accuracy of the grinding process. Such instability leads to inconsistent wear across different parts of the drill bit, further amplifying errors in shape and size, ultimately negatively impacting product quality. Utility Model Content

[0005] This utility model provides a double-hinged drill bit support mechanism and a drill bit grinding device, which aims to improve at least one of the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides a double-hinged drill bit support mechanism, which is suitable for supporting the drilling part of the drill bit from two directions during the drill bit diameter grinding process.

[0007] The dual-hinged drill bit support mechanism includes a fixing component, a first support component, a second support component, and a drive component.

[0008] The fixing component is used to attach to the outside.

[0009] The first support assembly includes a first hinge seat hinged to the fixed assembly and a first elastic member engaged with the first hinge seat. The first hinge seat is adapted to move between a first support position supporting the drill bit and a first remote position away from the drill bit. The first elastic member is adapted to provide a first support force to the first hinge seat, enabling the first hinge seat to move toward the first support position or the first remote position.

[0010] The second support assembly includes a second hinge seat hinged to the first hinge seat, and a second elastic member engaged with the second hinge seat. The second hinge seat is adapted to move between a second support position supporting the drill bit and a second remote position away from the drill bit. The second elastic member is adapted to provide a second support force to the second hinge seat, enabling the second hinge seat to move toward the second support position or the second remote position.

[0011] The drive assembly is adapted to provide a third support force to the first hinge seat that can overcome the first support force.

[0012] The fixing component is provided with a limiting portion. The second hinge seat abuts against the limiting portion. The limiting portion is adapted to provide the second hinge seat with a fourth supporting force capable of overcoming the second supporting force. The second supporting force and the third supporting force work together to drive the second hinge seat to move toward the second remote position when the first hinge seat moves toward the first remote position, and to drive the second hinge seat to move toward the second supporting position when the first hinge seat moves toward the first supporting position.

[0013] In an optional embodiment, the fixing assembly includes a first fixing seat and a second fixing seat engaged with the first fixing seat. The second fixing seat is hinged to the first fixing seat and configured to be fixed to the first fixing seat at different angles. The limiting portion is disposed on the second fixing seat to adjust the position of the limiting portion.

[0014] In an optional embodiment, the fixing assembly further includes a third fixing seat engaged with the first fixing seat. The third fixing seat is adapted to limit the rotation angle of the first hinge seat on the first fixing seat.

[0015] Preferably, the limiting part is constructed as an inclined surface.

[0016] In an optional embodiment, the limiting portion is located on the side of the first hinge seat away from the first support position, so that the first hinge seat can move toward the limiting portion when moving toward the first away position.

[0017] In an optional embodiment, the first hinge seat has a notch on one side facing the first support position. One side of the notch has a first support portion for supporting the drilling part. The other side of the notch is hinged to the second hinge seat, which has a second support portion for supporting the drilling part.

[0018] The first hinge seat has an inclined clearance portion on the side away from the notch, so that when the first hinge seat is in the first farthest position, the hinge position of the second hinge seat can be closer to the limiting portion.

[0019] In an optional embodiment, the first support force is configured to drive the first hinge seat toward the first remote position. The third support force is configured to drive the first hinge seat toward the first support position.

[0020] The second support force is configured to drive the second hinge seat toward the second remote position. The fourth support force is configured to drive the second hinge seat toward the second support position.

[0021] In an optional embodiment, the first support assembly further includes a first support member detachably engaged with the first hinge seat. The first support member is provided with a first support portion for supporting the drilling portion. The second support assembly further includes a second support member detachably engaged with the second hinge seat. The second support member is provided with a second support portion for supporting the drilling portion. The first support portion and the second support portion are adapted to support the drilling portion from different angles.

[0022] The second support member is configured to engage with the second hinge seat in an adjustable position along a direction perpendicular to the support direction of the second support portion.

[0023] The first elastic element is a tensile elastic element and is engaged between the fixing assembly and the first hinge seat. The second elastic element is a tensile elastic element and is engaged between the first hinge seat and the second hinge seat.

[0024] The second support assembly further includes a roller rotatably engaged with the second hinge seat. The roller is adapted to abut against the limiting portion.

[0025] This application also provides a drill bit grinding device, which includes a base, a first drill shank fixing mechanism engaged with the base and adapted to engage with the drill shank portion of the drill bit, a double-hinged drill bit support mechanism as described in any section of the first aspect for supporting the drilling portion of the drill bit, and a drill bit grinding mechanism for grinding the drilling portion.

[0026] In an optional embodiment, the drill bit grinding device further includes a second drill shank fixing mechanism. The second drill shank fixing mechanism includes a first clamping assembly for driving the drill bit to rotate, and a second clamping assembly and a third clamping assembly for clamping the drill shank portion to the first clamping assembly.

[0027] In an optional embodiment, the first clamping assembly includes a first clamping wheel and a first driving member for driving the first clamping wheel to rotate.

[0028] The second clamping assembly includes a first clamping seat movably engaged with the base, a second clamping wheel rotatably engaged with the first clamping seat, and a second driving member for driving the first clamping seat to move. The second driving member is adapted to drive the second clamping wheel closer to or away from the first clamping wheel.

[0029] The third clamping assembly includes a second clamping seat movably engaged with the base, and a third driving member for driving the second clamping seat. The second clamping seat is provided with a third support portion for abutting against the drill shank.

[0030] A clamping space is formed between the first clamping wheel, the second clamping wheel, and the third support portion to accommodate the drill shank.

[0031] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0032] The dual-hinged drill bit support mechanism supports the drill bit from two directions, effectively reducing wobbling caused by axial misalignment and improving drill bit stability during grinding. This stable support environment not only reduces the risk of deformation in micro-hole drills due to their small diameter but also allows for a more uniform and refined grinding effect on the drilled surface, thus improving grinding quality. Higher machining accuracy translates to a lower scrap rate and reduced rework requirements, which not only improves overall production efficiency but also reduces manufacturing costs. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the specific embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is an isometric view of the double-hinged drill bit support mechanism.

[0035] Figure 2 This is an exploded view from a first-person perspective of the double-hinged drill bit support mechanism.

[0036] Figure 3 This is an exploded view from a second perspective of the double-hinged drill bit support mechanism.

[0037] Figure 4This is a third-person exploded view of the double-hinged drill bit support mechanism.

[0038] Figure 5 It is an isometric view of the drill bit grinding device.

[0039] Figure 6 This is an isometric view of the drill bit grinding mechanism.

[0040] Figure 7 It is an isometric view of the double-hinged drill bit support mechanism, the first clamping assembly, the second clamping assembly, and the third clamping assembly.

[0041] Figure 8 This is an exploded view of the double-hinged drill bit support mechanism, the first clamping assembly, the second clamping assembly, and the third clamping assembly.

[0042] Figure 9 This is an isometric view of the second clamping assembly.

[0043] Figure 10 This is an isometric view of the third clamping component.

[0044] In the diagram, the markings are: 1-First hinge seat, 2-First elastic element, 3-Third fixed seat, 4-First fixed seat, 5-Second fixed seat, 6-Limiting part, 7-Roller, 8-Second elastic element, 9-Second hinge seat, 10-Second support member, 11-First support member, 12-Fixing assembly, 13-First support assembly, 14-First support part, 15-Notch, 16-Second support part, 17-Second support assembly, 18-Inclined clearance part, 19-Drill bit. 20-Grinding mechanism, 21-Drive assembly, 22-Second drill shank fixing mechanism, 23-Base, 24-Third clamping assembly, 25-First clamping assembly, 26-First driving component, 27-Second clamping assembly, 28-First drill shank fixing mechanism, 29-Second clamping wheel, 30-First clamping seat, 31-Second driving component, 32-Second clamping seat, 33-Third support part, 34-Third driving component, 35-Double hinged drill bit support mechanism. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] Example 1, by Figures 1 to 10 As shown, this embodiment of the invention provides a double-hinged drill bit support mechanism, suitable for supporting the cutting portion of the drill bit from two directions during drill bit diameter grinding. The drill bit includes a shank and a cutting portion, and a neck located between the shank and the cutting portion. The double-hinged drill bit support mechanism includes a fixing component 12, a first support component 13, a second support component 17, and a drive component 20. The fixing component 12 is used for external engagement.

[0047] The first support assembly 13 includes a first hinge seat 1 hinged to the fixed assembly 12, and a first elastic member 2 engaged with the first hinge seat 1. The first hinge seat 1 is adapted to move between a first support position supporting the drill bit and a first remote position away from the drill bit. The first elastic member 2 is adapted to provide a first support force to the first hinge seat 1, enabling the first hinge seat 1 to move toward the first support position or the first remote position.

[0048] The second support assembly 17 includes a second hinge seat 9 hinged to the first hinge seat 1, and a second elastic member 8 engaged with the second hinge seat 9. The second hinge seat 9 is adapted to move between a second support position supporting the drill bit and a second remote position away from the drill bit. The second elastic member 8 is adapted to provide a second support force to the second hinge seat 9, enabling the second hinge seat 9 to move toward the second support position or the second remote position.

[0049] The drive assembly 20 is adapted to provide a third supporting force to the first hinge seat 1 that can overcome the first supporting force. Preferably, the drive assembly 20 is constructed as a telescopic structure element such as a cylinder, hydraulic cylinder, or linear motor.

[0050] The fixing component 12 is provided with a limiting portion 6. The second hinge seat 9 abuts against the limiting portion 6. The limiting portion 6 is adapted to provide the second hinge seat 9 with a fourth supporting force capable of overcoming the second supporting force. The second supporting force and the third supporting force are configured to drive the second hinge seat 9 to move toward the second remote position when the first hinge seat 1 moves toward the first remote position, and to drive the second hinge seat 9 to move toward the second supporting position when the first hinge seat 1 moves toward the first supporting position.

[0051] The dual-hinged drill bit support mechanism supports the drill bit from two directions, effectively reducing wobbling caused by axial misalignment and improving drill bit stability during grinding. This stable support environment not only reduces the risk of deformation in micro-hole drills due to their small diameter but also allows for a more uniform and refined grinding effect on the drilled surface, thus improving grinding quality. Higher machining accuracy translates to a lower scrap rate and reduced rework requirements, which not only improves overall production efficiency but also reduces manufacturing costs.

[0052] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 1 to 4 As shown, the fixing assembly 12 includes a first fixing seat 4 and a second fixing seat 5 and a third fixing seat 3 engaged with the first fixing seat 4. The second fixing seat 5 is hinged to the first fixing seat 4 and is configured to be fixed to the first fixing seat 4 at different angles. The limiting part 6 is disposed on the second fixing seat 5 to adjust the position of the limiting part 6. The third fixing seat 3 is adapted to limit the rotation angle of the first hinge seat 1 on the first fixing seat 4. Preferably, the fixing assembly 12 further includes a slide block to which the first fixing seat 4 is slidably engaged to move the first support assembly 13 and the second support assembly 17 along the axial direction of the drill bit. The limiting part 6 is configured as an inclined surface. The second support assembly 17 also includes a roller 7 rotatably engaged with the second hinge seat 9. The roller 7 is adapted to abut against the limiting part 6.

[0053] Specifically, the first fixed seat 4 allows adjustment of the support positions of the first support assembly 13 and the second support assembly 17 on the drilling section to accommodate drill bits of different lengths. The second fixed seat 5 provides precise positioning for the second hinge seat 9, ensuring it accurately abuts against the side of the drilling section. Hinged to the first fixed seat 4, the second fixed seat 5 allows for angle adjustment in the rotational direction, providing positioning at different positions and accommodating a wider range of drill bits.

[0054] The third fixed seat 3 is hinged at one end to the first fixed seat 4, and the other end is slidably engaged with the first hinge seat 1 through a waist-shaped hole, thereby limiting the rotation range of the first hinge seat 1. The third fixed seat 3 can prevent the first hinge seat 1 from applying excessive force to the drilling part, prevent the drilling part from deforming, and greatly improve the accuracy of the drilling part.

[0055] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 1 to 4 As shown, the limiting part 6 is located on the side of the first hinge seat 1 away from the first support position, so that the first hinge seat 1 can move toward the limiting part 6 when moving toward the first away position.

[0056] Specifically, when moving toward the first farthest position, it can drive the second hinge seat 9 to move, thereby allowing the roller 7 to roll along the inclined surface to adjust the included angle between the first hinge seat 1 and the second hinge seat 9, allowing the second hinge seat 9 to move toward the second farthest position.

[0057] The integrated linkage structure of the first hinge seat 1, the first elastic element 2, the second hinge seat 9, the second elastic element 8, the drive assembly 20, and the limiting part 6 enables the first hinge seat 1 and the second hinge seat 9 to simultaneously approach and support the drilling part, or simultaneously move away from the drilling part, achieving double-sided support for the drilling part in a relatively small space. It is understood that these five components of the integrated linkage structure are indispensable; the absence of any one component would prevent double-sided support of the drilling part. Therefore, these five technical features are functionally mutually supportive and interactive as specified in the examination guidelines, and should be further considered and evaluated as a whole.

[0058] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 1 to 4 As shown, the first hinge seat 1 has a notch 15 on the side facing the first support position. A first support portion 14 for supporting the drilling part is provided on one side of the notch 15. The other side of the notch 15 is hinged to the second hinge seat 9, which has a second support portion 16 for supporting the drilling part. An inclined clearance portion 18 is provided on the side of the first hinge seat 1 away from the notch 15, so that when the first hinge seat 1 is in the first farthest position, the hinge position of the second hinge seat 9 can be closer to the limiting portion 6.

[0059] In this embodiment, a notch 15 is provided to accommodate the support member. In other embodiments, the first support member 11 and the second support member 10 can be respectively mounted on the upper surfaces of the first hinge seat 1 and the second hinge seat 9, without providing the notch 15. The notch 15 is not a necessary technical feature of this invention, but rather an improvement feature, which can reduce the overall structural thickness to avoid obstructing other structures of the device. In other embodiments, obstruction can be achieved by overall movement, without requiring a flattened structure design.

[0060] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 2 to 4 As shown, the first support assembly 13 further includes a first support member 11 detachably engaged with the first hinge seat 1. The first support member 11 is provided with a first support portion 14 for supporting the drilling portion. The second support assembly 17 further includes a second support member 10 detachably engaged with the second hinge seat 9. The second support member 10 is provided with a second support portion 16 for supporting the drilling portion. The first support portion 14 and the second support portion 16 are adapted to support the drilling portion from different angles.

[0061] The first support member 11 is configured to engage with the second hinge seat 9 in an adjustable position along the vertical direction of the support direction of the first support portion 14. The second support member 10 is configured to engage with the second hinge seat 9 in an adjustable position along the support direction of the second support portion 16 and the vertical direction of the support direction.

[0062] In this embodiment, the first support portion 14 and the second support portion 16 are respectively mounted on the first hinge seat 1 and the second hinge seat 9 via the first support member 11 and the second support member 10. Preferably, the first support member 11 can be adjusted in length extending from the first hinge seat 1 along the support direction. The second support member 10 can be adjusted in length extending from the second hinge seat 9 along the support direction, and its position can be adjusted in the vertical direction along the support direction, thereby adapting to drill bits of different diameters. Furthermore, when the support portion wears, it can be adjusted to ensure that the support portion always abuts against the drilling portion.

[0063] In other embodiments, the first support portion 14 and the second support portion 16 may be designed integrally with the first hinge seat 1 and the second hinge seat 9, without installing the first support member 11 and the second support member 10. This utility model does not specifically limit this.

[0064] Based on the above embodiments, in an optional embodiment of the present invention, the first supporting force is configured to drive the first hinge seat 1 toward the first remote position. The third supporting force is configured to drive the first hinge seat 1 toward the first supporting position.

[0065] The second support force is configured to drive the second hinge seat 9 toward the second remote position. The fourth support force is configured to drive the second hinge seat 9 toward the second support position.

[0066] Preferably, the first elastic element 2 is a tensile elastic element and is engaged between the fixing assembly 12 and the first hinge seat 1. The second elastic element 8 is a tensile elastic element and is engaged between the first hinge seat 1 and the second hinge seat 9.

[0067] like Figures 1 to 4 As shown, the second fixed seat 5 is arranged between the first hinge seat 1 and the second hinge seat 9. The first elastic element 2 and the second elastic element 8 are both tension springs, which are used to pull the hinge seat away from the drilling part.

[0068] The drive assembly 20 is used to drive the first hinge seat 1 to rotate toward the drilling part. The second hinge seat 9 moves with the first hinge seat 1. During the rotation, the second fixed seat 5 moves away from the first hinge seat 1 and drives one end of the second hinge seat 9 away from the first hinge seat 1, while the other end rotates toward the drilling part.

[0069] When the drive assembly 20 releases the first hinge seat 1, the first hinge seat 1 moves away from the drilling part. At this time, the first hinge seat 1 is close to the second fixed seat 5, and one end of the second hinge seat 9 is always attached to the second fixed seat 5 under the action of the second elastic member 8, so that the other end of the second hinge seat 9 rotates away from the drilling part.

[0070] In other embodiments, the tension spring can be replaced with a torsion spring, achieving the same effect without necessarily using a tension elastic element.

[0071] In an optional embodiment, the first elastic element 2 can be configured as a compression spring, or the stretching direction of the tension spring can be changed so that the driving direction of the first elastic element 2 is opposite to that of this embodiment, thereby driving the first hinge seat 1 to rotate toward the first support position. In this case, the driving direction of the driving assembly 20 should also be modified to the opposite direction to that of this embodiment, thereby driving the first hinge seat 1 to rotate toward the first distance from the position.

[0072] Similarly, the second elastic element 8 can also be configured as a compression spring, or the stretching direction of the tension spring can be changed so that the driving direction of the second elastic element 8 is opposite to that of this embodiment, thereby driving the second hinge seat 9 to rotate toward the second support position. At this time, the installation position of the limiting part 6 also needs to be changed, and the limiting part 6 is installed on the side of the second hinge seat 9 away from the first hinge seat 1, instead of being installed between the first hinge seat 1 and the second hinge seat 9.

[0073] At this time, when the first hinge seat 1 rotates toward the drilling part, the second hinge seat 9 moves away from the limiting part 6 and rotates synchronously toward the drilling part under the drive of the second elastic member 8. When the first hinge seat 1 rotates away from the drilling part, the second hinge seat 9 moves closer to the limiting part 6 and rotates synchronously away from the drilling part under the pressure of the limiting part 6. Thus, the first support assembly 13 and the second support assembly 17 can synchronously support and move away from the drilling part within a small space.

[0074] Example 2, as follows Figures 1 to 10 The present application also provides a drill bit grinding device, which includes a base 22, a first drill shank fixing mechanism 28 engaged with the base 22 and adapted to be engaged with the drill shank portion of the drill bit, a double hinged drill bit support mechanism as described in any section of Embodiment 1 for supporting the drilling portion of the drill bit, and a drill bit grinding mechanism 19 for grinding the drilling portion.

[0075] During the rough grinding process of the drill bit, the drill bit grinding device of this utility model provides support to the drill bit through the double hinge seat drill bit support mechanism, which is always in contact with the drill bit and prevents the drill bit from deforming or shaking during the grinding process, thus greatly improving the grinding quality of the drill bit.

[0076] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figures 5 to 10 As shown, the drill bit grinding device further includes a second drill shank fixing mechanism 21. The second drill shank fixing mechanism 21 includes a first clamping assembly 24 for driving the drill bit to rotate, and a second clamping assembly 27 and a third clamping assembly 23 for clamping the drill shank to the first clamping assembly 24. Preferably, the first clamping assembly 24 includes a first clamping wheel 25 and a first driving member 26 for driving the first clamping wheel 25 to rotate. The second clamping assembly 27 includes a first clamping seat 30 movably engaged with the base 22, a second clamping wheel 29 rotatably engaged with the first clamping seat 30, and a second driving member 31 for driving the first clamping seat 30 to move. The second driving member 31 is adapted to drive the second clamping wheel 29 closer to or away from the first clamping wheel 25. The third clamping assembly 23 includes a second clamping seat 32 movably engaged with the base 22, and a third driving member 34 for driving the second clamping seat 32. The second clamping seat 32 is provided with a third support portion 33 for abutting against the drill shank. A clamping space for accommodating the drill shank is formed between the first clamping wheel 25, the second clamping wheel 29, and the third support portion 33.

[0077] Specifically, by setting up the first clamping wheel 25, the second clamping wheel 29, and the second clamping seat 32, it can not only stably clamp the shank to prevent deformation or shaking of the shank, but also drive the drill bit to rotate, so that the drill bit can be ground evenly at all angles.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-hinged drill bit support mechanism, characterized in that, The double-hinged drill bit support mechanism is adapted to support the drilling section of the drill bit from two directions during the drill bit diameter grinding process; The double-hinged drill bit support mechanism includes: Fixing component (12) for attachment to the outside; The first support assembly (13) includes a first hinge seat (1) hinged to the fixed assembly (12) and a first elastic member (2) engaged with the first hinge seat (1); the first hinge seat (1) is adapted to move between a first support position supporting the drill portion and a first remote position away from the drill portion; the first elastic member (2) is adapted to provide a first support force to the first hinge seat (1) that enables the first hinge seat (1) to move toward the first support position or the first remote position; The second support assembly (17) includes a second hinge seat (9) hinged to the first hinge seat (1) and a second elastic member (8) engaged with the second hinge seat (9); the second hinge seat (9) is adapted to move between a second support position supporting the drill portion and a second remote position away from the drill portion; the second elastic member (8) is adapted to provide a second support force to the second hinge seat (9) that enables the second hinge seat (9) to move toward the second support position or the second remote position; The drive assembly (20) is adapted to provide a third support force to the first hinge (1) that can overcome the first support force; The fixing component (12) is provided with a limiting part (6); the second hinge seat (9) abuts against the limiting part (6); the limiting part (6) is adapted to provide the second hinge seat (9) with a fourth supporting force that can overcome the second supporting force; the second supporting force and the third supporting force work together to drive the second hinge seat (9) to move toward the second remote position when the first hinge seat (1) moves toward the first remote position, and to drive the second hinge seat (9) to move toward the second supporting position when the first hinge seat (1) moves toward the first supporting position.

2. The double-hinged drill bit support mechanism according to claim 1, characterized in that, The fixing component (12) includes a first fixing seat (4) and a second fixing seat (5) engaged with the first fixing seat (4); the second fixing seat (5) is hinged to the first fixing seat (4) and is configured to be fixed to the first fixing seat (4) at different angles; the limiting part (6) is disposed on the second fixing seat (5) to adjust the position of the limiting part (6).

3. The double-hinged drill bit support mechanism according to claim 2, characterized in that, The limiting part (6) is constructed as an inclined surface; The fixing assembly (12) further includes a third fixing seat (3) engaged with the first fixing seat (4); the third fixing seat (3) is adapted to limit the rotation angle of the first hinge seat (1) on the first fixing seat (4).

4. The double-hinged drill bit support mechanism according to claim 1, characterized in that, The limiting part (6) is located on the side of the first hinge seat (1) away from the first support position, so that the first hinge seat (1) can move toward the limiting part (6) when moving toward the first away position.

5. A double-hinged drill bit support mechanism according to claim 4, characterized in that, The first hinge seat (1) has a notch (15) on one side facing the first support position; a first support part (14) for supporting the drilling part is provided on one side of the notch (15); the other side of the notch (15) is hinged to the second hinge seat (9), and the second hinge seat (9) has a second support part (16) for supporting the drilling part. The first hinge seat (1) is provided with an inclined clearance portion (18) on the side away from the notch (15) so that when the first hinge seat (1) is in the first far away position, the hinge position of the second hinge seat (9) can be closer to the limiting portion (6).

6. A double-hinged drill bit support mechanism according to any one of claims 1 to 5, characterized in that, The first support force is configured to drive the first hinge seat (1) toward the first remote position; the third support force is configured to drive the first hinge seat (1) toward the first support position; The second support force is configured to drive the second hinge seat (9) toward the second remote position; The fourth support force is configured to drive the second hinge seat (9) toward the second support position.

7. A double-hinged drill bit support mechanism according to claim 6, characterized in that, The first support assembly (13) further includes a first support member (11) detachably engaged with the first hinge seat (1); the first support member (11) is provided with a first support portion (14) for supporting the drilled portion; the second support assembly (17) further includes a second support member (10) detachably engaged with the second hinge seat (9); the second support member (10) is provided with a second support portion (16) for supporting the drilled portion; the first support portion (14) and the second support portion (16) are adapted to support the drilled portion from different angles; The second support member (10) is configured to engage with the second hinge seat (9) in an adjustable position along a direction perpendicular to the support direction of the second support part (16). The first elastic element (2) is a tension elastic element and is engaged between the fixed component (12) and the first hinge seat (1); the second elastic element (8) is a tension elastic element and is engaged between the first hinge seat (1) and the second hinge seat (9); The second support assembly (17) further includes a roller (7) rotatably engaged with the second hinge seat (9); the roller (7) is adapted to abut against the limiting portion (6).

8. A drill bit grinding device, characterized in that, The system includes a base (22), a first drill shank fixing mechanism (28) that engages with the base (22) and is adapted to engage with the drill shank portion of the drill bit, a double-hinged drill bit support mechanism as described in any one of claims 1 to 7 for supporting the cutting portion of the drill bit, and a drill bit grinding mechanism (19) for grinding the cutting portion.

9. A drill bit grinding device according to claim 8, characterized in that, The drill bit grinding device further includes a second drill shank fixing mechanism (21); the second drill shank fixing mechanism (21) includes a first clamping assembly (24) for driving the drill bit to rotate, and a second clamping assembly (27) and a third clamping assembly (23) for clamping the drill shank to the first clamping assembly (24).

10. A drill bit grinding device according to claim 9, characterized in that, The first clamping assembly (24) includes a first clamping wheel (25) and a first driving member (26) for driving the first clamping wheel (25) to rotate; The second clamping assembly (27) includes a first clamping seat (30) movably engaged with the base (22), a second clamping wheel (29) rotatably engaged with the first clamping seat (30), and a second driving member (31) for driving the first clamping seat (30) to move; the second driving member (31) is adapted to drive the second clamping wheel (29) to move closer to or away from the first clamping wheel (25); The third clamping assembly (23) includes a second clamping seat (32) movably engaged with the base (22), and a third drive member (34) for driving the second clamping seat (32); the second clamping seat (32) is provided with a third support portion (33) for abutting against the drill shank. A clamping space is formed between the first clamping wheel (25), the second clamping wheel (29), and the third support (33) to accommodate the drill shank.

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