Clamping device for drill bit sharpening

Abstract

The utility model discloses a clamping device for drill bit sharpening, and relates to the technical field of drill bit clamping, the clamping device comprises a mounting seat, the mounting seat comprises a reference part and a pre-adjusting part arranged in the middle of the reference part, the pre-adjusting part is elastically connected with the reference part, and the top of the reference part is provided with a positioning part for positioning a drill bit; the pressing assembly comprises a pre-tightening piece and a first driving piece, the pre-tightening piece is arranged on the reference part in a sliding mode, the pre-tightening piece can conduct overturning and translation movement, the first driving piece is rotationally arranged on the reference part, and the first driving piece is used for driving the end of the pre-tightening piece to move till the end of the pre-tightening piece abuts against the drill bit located on the positioning part; and the clamping assembly is fixed to the pre-adjusting part, the clamping assembly comprises a clamping piece and a second driving piece, and the clamping piece can be driven by the second driving piece to clamp the positioned head of the drill bit. The clamping device for drill bit sharpening can elastically clamp a drill bit, and is low in maintenance cost and long in service life.

Description

Technical Field

[0001] The present application relates to the technical field of drill bit clamping, and in particular to a clamping device for sharpening a drill bit. Background Art

[0002] The processing of the drill tip of a micro drill for printed circuit boards requires the assistance of a relatively high-precision clamping mechanism to ensure that the drill tip cutting edge is symmetrical, the cutting edge is straight without gaps, and the cutting edge has no large or small faces, so that the micro drill has a very high drilling position accuracy during the drilling process. However, the existing micro drill tip clamping mechanism mainly adopts elastic clamping. However, due to the limitations of materials and heat treatment processes, the elastic clamping mechanism has a short life and a very high cost of use. Utility Model Content

[0003] The present application aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present application provides a clamping device for sharpening a drill bit, which can achieve elastic clamping of the drill bit, has low maintenance cost and long service life.

[0004] The clamping device for sharpening a drill bit according to the embodiment of the present application includes a mounting seat, the mounting seat includes a reference portion and a pre-adjustment portion arranged in the middle of the reference portion, the pre-adjustment portion is elastically connected to the reference portion, and a positioning portion for positioning the drill bit is arranged on the top of the reference portion; a clamping assembly includes a pre-tightening member and a first driving member, the pre-tightening member is slidably arranged on the reference portion, and the pre-tightening member can perform flipping and translational movements, the first driving member is rotatably arranged on the reference portion, and the first driving member is used to drive the end of the pre-tightening member to move to press against the drill bit located at the positioning portion; and a clamping assembly, fixed to the pre-adjustment portion, the clamping assembly includes a clamping member and a second driving member, and the clamping member can clamp the head of the positioned drill bit under the drive of the second driving member.

[0005] According to the clamping device for drill bit sharpening described in the embodiment of the present application, the clamping member includes a fastening portion and two clamping portions symmetrically arranged on both sides of the fastening portion, one end of the clamping portion has a clamping end, and the other end has a driving end, and when the second driving member drives the two driving ends to move away from each other, the two clamping ends can move closer to each other, so that the clamping ends can clamp the head of the positioned drill bit.

[0006] According to the clamping device for drill sharpening described in the embodiment of the present application, the clamping portion is elastically connected to the fastening portion so that the same ends of the two clamping portions can move closer to or farther away from each other under the action of external force.

[0007] According to the clamping device for drill bit sharpening described in an embodiment of the present application, the clamping assembly includes a fixed seat fixedly connected to the pre-adjustment part, the fastening part and the second driving member are both fixedly connected to the fixed seat, the second driving member is located between the two clamping parts, and the second driving member is a cylinder.

[0008] According to the clamping device for drill bit sharpening described in the embodiment of the present application, the clamping member is made of spring steel, and the clamping member is a plate member, and a first hollow structure and a second hollow structure are arranged at one end of the plate member to form the fastening portion and the two clamping ends, and a third hollow structure is arranged at the other end of the plate member to form the two driving ends, and the first hollow structure, the second hollow structure and the third hollow structure are combined to form the clamping portion and a connecting ear connecting the clamping portion with the fastening portion, and the second driving member is in the third hollow structure.

[0009] According to the clamping device for drill bit sharpening described in the embodiment of the present application, a bolt and nut structure is provided between the two driving ends, and the bolt and nut structure is used to adjust the distance between the two driving ends.

[0010] According to the clamping device for drill bit sharpening described in the embodiment of the present application, the mounting seat is made of elastic steel, and a plurality of non-closed-loop groove structures are arranged in the middle portion of the mounting seat to form the reference portion and the pre-adjustment portion, and the groove structure also forms an elastic portion between the reference portion and the pre-adjustment portion.

[0011] According to the clamping device for drill sharpening described in an embodiment of the present application, two groups of first pre-adjustment structures are arranged between the reference portion and the pre-adjustment portion, one group of the first pre-adjustment structures is arranged along a first direction, and the other group of the first pre-adjustment structures is arranged along a second direction, the first direction intersects with the second direction, and the first pre-adjustment structure is used to adjust the distance between the positioning portion and the pre-adjustment portion.

[0012] According to the clamping device for drill bit sharpening described in an embodiment of the present application, the first pre-adjustment structure includes a wedge block and a screw, the mounting seat is provided with a hollow hole for the movement of the wedge block, and the screw is threadedly connected to the wedge block so that the screw can drive the wedge block to slide along the first direction or the second direction.

[0013] According to the clamping device for drill bit sharpening described in an embodiment of the present application, the preload member is provided with a first guide groove and a second guide groove, the mounting seat is provided with a first guide column located in the first guide groove and a second guide column located in the second guide groove, the first guide groove is close to one end of the preload member, the second driving member is hinged to the other end of the preload member, the second guide groove is between the first guide groove and the second driving member, the second driving member is hinged to the reference portion, and when the second driving member drives the preload member to move, the first guide groove and the second guide groove cooperate to enable the preload member to perform a translational movement first, and then under the action of the first guide groove alone, the preload member can simultaneously perform a flipping and a translational movement, wherein the second driving member is a cylinder.

[0014] The above-mentioned clamping device for sharpening a drill bit has at least the following beneficial effects: wherein, the reference portion serves as a reference for installation, the pre-adjusting portion is elastically connected to the reference portion, and the pre-tightening assembly fixed to the reference portion includes a pre-tightening member and a first driving member. Since the pre-tightening member can perform flipping and translational motion, it does not affect the placement of the drill bit on the positioning portion, and can also accurately move to the top of the positioning portion under the drive of the first driving member to press and limit the drill bit. The clamping member of the clamping assembly fixed to the pre-adjusting portion clamps the head of the positioned drill bit under the action of the second driving member for subsequent sharpening or other processing. Compared with the prior art, the pre-adjusting portion is elastically connected to the reference portion, so that the drill bit can be better fixed and supported during sharpening or other grinding operations, and elastic clamping is achieved. The arrangement of the pre-adjusting portion and the reference portion simplifies the structure of the mounting seat, the pre-adjusting portion and the reference portion are simply connected, and can have a longer service life. It is more convenient to manufacture and process, and the manufacturing cost is low. Even if the elasticity between the pre-adjusting portion and the reference portion disappears, it can be easily maintained by replacing a new mounting seat, which can greatly reduce the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present application is further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0017] Figure 2 is a schematic structural diagram of a clamping assembly in an embodiment of the present application;

[0018] Figure 3 is a schematic structural diagram of a clamping member in an embodiment of the present application;

[0019] Figure 4 This is a schematic diagram of the connection between the clamping assembly and the mounting seat in the embodiment of the present application. Figure 1 ;

[0020] Figure 5This is a schematic diagram of the connection between the clamping assembly and the mounting seat in the embodiment of the present application. Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the structure of the mounting base in the embodiment of the present application. Figure 1 ;

[0022] Figure 7 This is a schematic diagram of the structure of the mounting base in the embodiment of the present application. Figure 2 ;

[0023] Figure 8 It is a schematic diagram of the structure of the pre-tightening member in an embodiment of the present application. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0028] Reference Figure 1 An embodiment of the present application provides a clamping device for sharpening a drill bit, which specifically includes a mounting seat 100, a clamping assembly and a clamping assembly 200, wherein the clamping assembly and the clamping assembly 200 are both fixed on the mounting seat 100.

[0029] Specifically, the mounting seat 100 includes a reference portion 110 and a pre-adjusting portion 150 arranged in the middle of the reference portion 110, the pre-adjusting portion 150 is elastically connected to the reference portion 110, and a positioning portion for positioning the drill bit 500 is arranged on the top of the reference portion 110. The reference portion 110 and the pre-adjusting portion 150 are made of the same piece of material, which simplifies the connection between the reference portion 110 and the pre-adjusting portion 150, reduces the wear generated during use, and greatly extends the service life. On the one hand, it is convenient to process and does not require replacement and clamping, and the cost of manufacturing is also low. On the other hand, even if the elasticity between the reference portion 110 and the pre-adjusting portion 150 disappears, it is only necessary to replace a piece of the mounting seat 100. It should be noted that a notch 104 for placing a positioning block 600 is opened on the reference portion 110. After the positioning block 600 is placed in the notch 104, it is fixed and pre-tightened by screws. The positioning block 600 is provided with a V-groove 610 for quickly positioning the drill bit 500.

[0030] Among them, the clamping assembly includes a preload 300 and a first driving member 400. The preload 300 is slidably set on the reference part 110, and the preload 300 can perform flipping and translational movements. On the one hand, it does not affect the placement of the drill bit on the positioning part. On the other hand, it can also be driven by the first driving member to accurately move to the top of the positioning part to clamp and limit the drill bit. The first driving member 400 is rotatably set on the reference part 110. The first driving member 400 is used to drive the end of the preload 300 to move to press against the drill bit 500 located in the positioning part.

[0031] The clamping assembly 200 is fixed to the pre-adjusting part 150. The clamping assembly 200 includes a clamping member 210 and a second driving member 240. The clamping member 210 can clamp the head of the positioned drill bit 500 under the drive of the second driving member 240. Since the pre-adjusting part 150 is elastically connected to the reference part 110, the reference part 110 serves as a reference for installation. Therefore, when the drill bit is fixed to the positioning part by the clamping assembly, it is rigidly positioned and fixed, and the head of the drill bit 500 clamped by the clamping assembly 200 is elastically clamped.

[0032] Compared with the prior art, the pre-adjustment part 150 is elastically connected to the reference part 110, so that the drill bit 500 can be better fixed and supported during sharpening or other grinding operations, and elastic clamping is achieved. In addition, the arrangement of the pre-adjustment part 150 and the reference part 110 simplifies the structure of the mounting seat 100. The pre-adjustment part 150 and the reference part 110 are simply connected, and can have a longer service life. It is more convenient to manufacture and process, and the manufacturing cost is low. Even if the elasticity between the pre-adjustment part 150 and the reference part 110 disappears, it can be replaced by a new mounting seat, which is convenient for maintenance and can greatly reduce the maintenance cost.

[0033] In some embodiments, Figure 2As shown, the clamping member 210 includes a fastening portion 211 and two clamping portions symmetrically arranged on both sides of the fastening portion 211, one end of the clamping portion has a clamping end 220, and the other end has a driving end 230. When the second driving member 240 drives the two driving ends 230 to move away from each other, the two clamping ends 220 can move towards each other, and the two clamping ends 220 are clamped synchronously, so that the clamping ends 220 can clamp the head of the positioned drill bit 500. It should be noted that both clamping ends 220 are provided with a clamping block 250 for clamping the drill bit 500, one of the clamping blocks 250 is provided with a V-groove 251 for quickly positioning and clamping the head of the drill bit 500, and different V-grooves 251 can be set according to different models of drill bits 500, so as to facilitate the grinding operation of drill bits 500 of different models, and the clamping block 250 is fixed to the clamping end 220 by bolts, which is also convenient to replace.

[0034] In some embodiments, the clamping portion is elastically connected to the fastening portion 211 so that the same end portions of the two clamping portions can approach or move away from each other under the action of external force. During operation, the two driving ends 230 are driven away from each other by the second driving member 240, so that the clamping end 220 at the other end of the clamping portion can approach each other, so that the clamping block 250 thereon can quickly position and clamp the head of the drill bit 500. The fastening portion 211 and the two clamping portions form a scissors fork structure. When the second driving member 240 no longer applies force to drive the two driving ends 230 away from each other, because the clamping portion is elastically connected to the fastening portion 211, the two driving ends 230 approach each other under the action of the rebound force, and accordingly, the two clamping ends 220 also return to their original positions for subsequent placement and removal of the drill bit 500.

[0035] Furthermore, the clamping assembly 200 of the present application also includes a fixed seat 201 fixedly connected to the pre-adjustment part 150, the fastening part 211 and the second driving member 240 are both fixedly connected to the fixed seat 201, the fastening part 211 and the second driving member 240 are both connected to the fixed seat 201 by bolts, and the second driving member 240 is located between the two clamping parts, thereby fixing the clamping member 210 and the second driving member 240 to the pre-adjustment part 150, wherein the second driving member 240 is a cylinder, and the driving shaft 241 of the second driving member 240 can move between the two driving ends 230.

[0036] Furthermore, the clamping member 210 is made of spring steel, such as Figure 3As shown, the clamping member 210 is a plate member, and a first hollow structure 212 and a second hollow structure are arranged at one end of the plate member to form a fastening portion 211 and two clamping ends 220, and a third hollow structure 213 is arranged at the other end of the plate member to form two driving ends 230. The first hollow structure 212, the second hollow structure and the third hollow structure are combined to form a clamping portion and a connecting ear 214 for connecting the clamping portion to the fastening portion 211. The second driving member 240 is in the third hollow structure 213. The clamping member 210 made of spring steel enables the clamping part and the fastening part 211 to be elastically connected through the connecting ear 214 with a small width and length. Specifically, the first hollow structure 212 divides one end of the clamping member 210 into two parts, specifically forming two clamping ends 220, and the third hollow structure 213 divides the other end of the clamping member 210 into two parts to form two driving ends 230. The second hollow structure is a groove arranged at intervals and distributed at the positions of the first hollow structure 212 and the third hollow structure 213, and the fastening part 211 is surrounded by the part not touched by the first hollow structure 212 and the third hollow structure 213, so that the two driving ends 230 move away from each other under the action of external force, while the two clamping ends 220 can move towards each other. The setting of the hollow structure simplifies the design of the clamping member 210, facilitates manufacturing, and reduces the cost of maintenance and replacement.

[0037] In some other preferred embodiments, a bolt and nut structure 260 is provided between the two driving ends 230, and the bolt and nut structure 260 is used to adjust the distance between the two driving ends 230. Specifically, the two driving ends 230 are provided with a through hole for the column of the bolt to pass through, and the distance between the two driving ends 230 is adjusted by the cooperation of the nut and the bolt to adapt to the clamping of the head of different drill bits 500.

[0038] In some other preferred embodiments, Figure 6 and Figure 7 As shown, the mounting seat 100 is made of elastic steel, and a plurality of non-closed-loop groove structures are arranged in the middle of the mounting seat 100 to form a reference portion 110 and a pre-adjustment portion 150. The groove structure also forms an elastic portion 103 between the reference portion 110 and the pre-adjustment portion 150. Because the mounting seat 100 is made of elastic steel, and under the action of the elastic portion 103, the pre-adjustment portion 150 achieves elastic adaptation when the force is too large. In addition, the reference portion 110 and the pre-adjustment portion 150 are made of the same piece of material, and the production is relatively simple. There is no need to clamp again during the production process, and the production cost is low. The reference portion 110 and the pre-adjustment portion 150 are connected by multiple elastic portions 103, and can have a long service life. Even if all the elastic portions 103 are damaged later, only the entire mounting seat 100 needs to be replaced, and the replacement cost is low and maintenance is convenient.

[0039] In addition, if Figure 7As shown, several non-closed-loop groove structures also form a first pre-adjustment block 140 and a second pre-adjustment block 120 between the reference part 110 and the pre-adjustment part 150. The first pre-adjustment block 140 and the second pre-adjustment block 120 play a role in controlling the gap and connection rigidity between the reference part 110 and the pre-adjustment part 150.

[0040] In some embodiments, Figure 6 As shown, two groups of first pre-adjustment structures are arranged between the reference part 110 and the pre-adjustment part 150, one group of first pre-adjustment structures is arranged along the first direction, and the other group of first pre-adjustment structures is arranged along the second direction, the first direction intersects with the second direction, and under normal use, the mounting seat 100 is vertically arranged, and the first direction can be a horizontal direction or a vertical direction. The first pre-adjustment structure is used to adjust the distance between the positioning part and the pre-adjustment part 150, so that during long-term use, if part of the elastic part 103 is damaged, resulting in excessive changes in the spacing between the positioning part and the pre-adjustment part 150, the first pre-adjustment structure can be used to quickly and conveniently adjust it back to the correct position.

[0041] Further, the first pre-adjustment structure includes a wedge block 161 and a screw rod 162. The mounting seat 100 is provided with a hollow hole 101 for the wedge block 161 to move. The screw rod 162 is threadedly connected to the wedge block 161 so that the screw rod 162 can drive the wedge block 161 to slide along the first direction or the second direction. It should be noted that the hollow hole 101 is provided on one side of the second pre-adjustment block 120. The number of the second pre-adjustment block 120 is the same as the number of the first pre-adjustment structure. The screw rod 162 is rotatably provided on the reference portion 110. The wedge block One side of 161 is an inclined surface and the other side is a plane. During the sliding process of the wedge block 161, the inclined surface can slowly expand the gap between the second pre-adjustment block 120 and the reference portion 110. The spacing between the positioning portion and the pre-adjustment portion 150 can be adjusted by adjusting the first direction and the second direction. In order to avoid the situation where the elastic portion 103 is damaged and unable to rebound after excessive adjustment, a rebound hole 102 is provided on the side of the second pre-adjustment block 120 close to the pre-adjustment portion 150, and a spring 170 is provided in the rebound hole 102 to avoid excessive adjustment.

[0042] In some other embodiments, such as Figure 4 and Figure 5As shown, the preload member 300 is provided with a first guide groove 322 and a second guide groove 321, and the mounting seat 100 is provided with a first guide column 330 located in the first guide groove 322 and a second guide column 340 located in the second guide groove 321, the first guide groove 322 is close to one end of the preload member 300, the second driving member 240 is hinged to the other end of the preload member 300, the second guide groove 321 is between the first guide groove 322 and the second driving member 240, the second driving member 240 is hinged to the reference portion 110, and when the second driving member 240 drives the preload member 300 to move, the first guide groove 322 cooperates with the second guide groove 321 to enable the preload member 300 to perform a translational movement first, and then under the sole action of the first guide groove 322, the preload member 300 can simultaneously perform a flipping and a translational movement, wherein the second driving member 240 is a cylinder.

[0043] Specifically, a connecting block is provided at the end of the main body of the second driving member 240, and the connecting block is hinged to the mounting seat 100 through a rotating shaft 420. The moving axis of the second driving member 240 is provided with a connecting end 410, and the connecting end 410 is hinged to the preload member 300 through an axle pin 411. Combined with the limit setting of the preload member 300 and the mounting seat 100, the preload member 300 can first perform a translational movement and then flip and translate at the same time, ensuring that when the drill bit 500 is clamped, the preload member 300 does not interfere with the replacement of the positioning block 600. When the drill bit 500 needs to be clamped, the clamping end 310 of the preload member 300 can move to above the V-groove 610 of the positioning block 600.

[0044] In the preferred embodiment of the present application, Figure 8 As shown, vertical plates 320 are provided on both sides of the preload member 300, and a second guide groove 321 and a first guide groove 322 are opened on the two vertical plates 320. When the preload member 300 is limited to the mounting seat 100 by the first guide column 330 and the second guide column 340, the two vertical plates 320 are located on both sides of the mounting seat 100.

[0045] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A clamping device for sharpening a drill bit, characterized in that: include A mounting seat (100), the mounting seat (100) comprising a reference portion (110) and a pre-adjustment portion (150) arranged in the middle of the reference portion (110), the pre-adjustment portion (150) being elastically connected to the reference portion (110), and a positioning portion for positioning a drill bit (500) being arranged at the top of the reference portion (110); A clamping assembly, comprising a pre-tightening member (300) and a first driving member (400), wherein the pre-tightening member (300) is slidably disposed on the reference portion (110) and is capable of flipping and translational movement, and the first driving member (400) is rotatably disposed on the reference portion (110), and the first driving member (400) is used to drive the end of the pre-tightening member (300) to move to press against a drill bit (500) located on the positioning portion; and A clamping assembly (200) is fixed to the pre-adjusting portion (150), and the clamping assembly (200) comprises a clamping member (210) and a second driving member (240). The clamping member (210) can clamp the head of the positioned drill bit (500) when driven by the second driving member (240).

2. The clamping device for drill bit sharpening according to claim 1, characterized in that: The clamping member (210) comprises a fastening portion (211) and two clamping portions symmetrically arranged on both sides of the fastening portion (211); one end of the clamping portion has a clamping end (220) and the other end has a driving end (230); when the second driving member (240) drives the two driving ends (230) to move away from each other, the two clamping ends (220) can move toward each other, so that the clamping ends (220) can clamp the head of the drill bit (500) that has been positioned.

3. The clamping device for drill bit sharpening according to claim 2, characterized in that: The clamping portion is elastically connected to the fastening portion (211) so that the same ends of the two clamping portions can approach or move away from each other under the action of an external force.

4. The clamping device for drill bit sharpening according to claim 2 or 3, characterized in that: The clamping assembly (200) comprises a fixing seat (201) fixedly connected to the pre-adjusting portion (150), the fastening portion (211) and the second driving member (240) are both fixedly connected to the fixing seat (201), and the second driving member (240) is located between the two clamping portions, wherein the second driving member (240) is a cylinder.

5. The clamping device for drill bit sharpening according to claim 4, characterized in that: The clamping member (210) is made of spring steel and is a plate member. A first hollow structure (212) and a second hollow structure are arranged at one end of the plate member to form the fastening portion (211) and the two clamping ends (220). A third hollow structure (213) is arranged at the other end of the plate member to form the two driving ends (230). The first hollow structure (212), the second hollow structure and the third hollow structure are combined to form the clamping portion and a connecting ear (214) for connecting the clamping portion to the fastening portion (211). The second driving member (240) is located in the third hollow structure (213).

6. The clamping device for drill bit sharpening according to claim 4, characterized in that: A bolt and nut structure (260) is provided between the two driving ends (230), and the bolt and nut structure (260) is used to adjust the distance between the two driving ends (230).

7. The clamping device for drill bit sharpening according to claim 1, characterized in that: The mounting seat (100) is made of elastic steel, and a plurality of non-closed-loop groove structures are arranged in the middle of the mounting seat (100) to form the reference portion (110) and the pre-adjustment portion (150). The groove structures also form an elastic portion (103) between the reference portion (110) and the pre-adjustment portion (150).

8. The clamping device for drill bit sharpening according to claim 7, characterized in that: Two groups of first pre-adjustment structures are arranged between the reference portion (110) and the pre-adjustment portion (150), one group of the first pre-adjustment structures is arranged along a first direction, and the other group of the first pre-adjustment structures is arranged along a second direction, the first direction intersects with the second direction, and the first pre-adjustment structures are used to adjust the distance between the positioning portion and the pre-adjustment portion (150).

9. The clamping device for drill bit sharpening according to claim 8, characterized in that: The first pre-adjustment structure comprises a wedge block (161) and a screw rod (162); the mounting seat (100) is provided with a hollow hole (101) for the movement of the wedge block (161); the screw rod (162) is threadedly connected to the wedge block (161) so that the screw rod (162) can drive the wedge block (161) to slide along the first direction or the second direction.

10. The clamping device for drill bit sharpening according to claim 1, characterized in that: The preload member (300) is provided with a first guide groove (322) and a second guide groove (321); the mounting seat (100) is provided with a first guide column (330) located in the first guide groove (322) and a second guide column (340) located in the second guide groove (321); the first guide groove (322) is close to one end of the preload member (300); the second driving member (240) is hinged to the other end of the preload member (300); the second guide groove (321) is located in the first guide groove (322). The second driving member (240) is hinged to the reference portion (110). When the second driving member (240) drives the preload member (300) to move, the first guide groove (322) cooperates with the second guide groove (321) to enable the preload member (300) to first perform translational movement, and then, under the action of the first guide groove (322) alone, the preload member (300) can simultaneously perform flipping and translational movement, wherein the second driving member (240) is a cylinder.

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