Double-buckle axial locking fast-assembling type high-speed steel alloy drill bit and assembling method

Abstract

The invention relates to the technical field of drill bits, in particular to a double-buckle axial locking fast-assembly type high-speed steel alloy drill bit and an assembling method.The drill bit comprises a drill chuck assembly and a fixing bolt, the fixing bolt is installed in the drill chuck assembly, a drill bit assembly is inserted in the drill chuck assembly, a limiting mechanism is installed in the drill chuck assembly, and the drill bit assembly comprises a cutter handle; an annular groove is formed in the cutter handle in the circumferential direction, an arc-shaped block is fixedly connected to the outer side of the cutter handle, the limiting mechanism comprises a clamping block, a clamping groove is formed in one end of the clamping block, an air hole is formed in the inner side of the clamping block, an extrusion rod assembly is arranged in the air hole, and a guide assembly is installed on the inner side of the clamping block. The drill bit can be automatically guided to the correct position through the specific shape of the drill bit and mutual cooperation of other parts, and meanwhile, an operator can rapidly judge whether assembly is accurate in place or not by sensing feedback obtained by the resistance and rotation state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drill bits, in particular to a double-buckle axial locking quick-mount high-speed steel alloy drill bit and an assembly method. BACKGROUND

[0002] A drill bit is a terminal cutting tool that drills holes in hard materials using a rotating or impact method. The main body is usually made of wear-resistant materials such as high-speed steel and hard alloy. The structure mainly includes cutting edges, chip flutes, and clamping shanks. It is widely used in mechanical processing, construction, hardware processing, and other fields, often used with drill presses, electric drills, impact drills, and other equipment. It is an indispensable basic cutting tool in industrial production.

[0003] In the traditional use mode, the drill bit is usually clamped and fixed by a drill chuck. The clamping stability and disassembly convenience of the drill bit and the drill chuck directly affect the machining accuracy, operation efficiency, and service life of the drill bit. The traditional drill chuck mainly relies on manual operation for locking. This is because the use scenarios of drill bits cover professional mechanical processing, on-site construction, and routine hardware maintenance. There are both handheld drill and impact drill use scenarios without fixed work locations, and there are also small batch and multi-specification drill bit replacement processing scenarios. The working conditions differ greatly. Manual locking is not limited by the work environment, and the operator can manually adjust the locking force according to the different specifications of the drill bit and the processing materials to adapt to different drilling needs from soft wood to hard metal and stone. The flexibility is much higher than that of the automatic locking structure with fixed force.

[0004] However, the existing drill bit assembly method lacks standardized pre-installation, positioning, and locking procedures. During assembly, the operator's experience is highly dependent on the visibility of all clamping engagement parts. If the positioning deviation or locking sequence is incorrect, it may cause the limiting structure to jam, uneven stress on the fasteners, and affect the clamping stability. Therefore, to address the above problems, a double-buckle axial locking quick-mount high-speed steel alloy drill bit and an assembly method are proposed. SUMMARY

[0005] The present application aims to provide a double-buckle axial locking quick-mount high-speed steel alloy drill bit and an assembly method to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides a kind of double buckle axial locking quick-mounting high-speed steel alloy drill bit and assembling method, including drill chuck assembly and fixed bolt, fixed bolt is installed in the drill chuck assembly, drill chuck assembly is inserted with drill head assembly, limiting mechanism is installed in the drill chuck assembly, drill head assembly includes shank, annular groove is opened in the shank along circumference, arc block is fixedly connected outside the shank, limiting mechanism includes clamping block, clamping block one end is provided with clamping groove, gas hole is opened in the clamping block inner side, extrusion rod assembly is arranged in the gas hole, guiding assembly is installed in the clamping block inner side, anti-drop groove is opened in the clamping block, sleeve is welded outside the clamping block, two upper and lower symmetrical grooves are opened in the one end of sleeve, rotating rod is rotatably connected in the groove opened in the one end of sleeve, sleeve ring is sleeved on the sleeve, extrusion rod assembly includes elastic telescopic rod, elastic telescopic rod outside is wrapped with piston rubber, the top post is fixedly connected in the bottom end of elastic telescopic rod.

[0008] As the further optimization of the present application, wherein: the drill chuck assembly is embedded with a anti-loose ring, the anti-loose ring is sleeved on the fixed bolt, and the one end of the fixed bolt abuts against the outside of the sleeve ring.

[0009] As the further optimization of the present application, wherein: the drill chuck assembly includes a shell, an inner shell is arranged inside the shell, a chuck is slidably arranged inside the inner shell, a toothed block is installed inside the shell, and a connecting part is inserted into the shell.

[0010] As the further optimization of the present application, wherein: a part of the chuck is clamped in the clamping groove, one side of the chuck abuts against the outside of the drill head assembly, the toothed block is engaged with the fixed bolt, and one side of the toothed block abuts against one end of the clamping block.

[0011] As the further optimization of the present application, wherein: a part of the shank is inserted into the clamping block, the arc block is clamped in the anti-loose groove, and the anti-loose groove is opened in the shape of U.

[0012] As the further optimization of the present application, wherein: the gas hole is in the shape of T, the outside of the piston rubber abuts against the inside of the gas hole, the telescopic end of the elastic telescopic rod passes through the gas hole and abuts against the drill chuck assembly, the one end of the top post away from the elastic telescopic rod is arc-shaped, and is arranged in the annular groove.

[0013] As the further optimization of the present application, wherein: the guiding assembly includes a fixed disc fixedly connected with the clamping block, the fixed disc is fixedly connected with a moving block through a spring, through holes are opened in the inside of the fixed disc and the moving block, the one end of the shank is conical, and the one end of the shank is inserted into the through hole opened in the inside of the moving block.

[0014] As a further optimization of the present invention, the anti-detachment groove is connected to the groove opened at one end of the sleeve, a portion of the rotating rod is inserted into the anti-detachment groove, and the end of the rotating rod inserted into the anti-detachment groove abuts against the outer side of the arc-shaped block.

[0015] As a further optimization of the present invention, the collar is composed of a circular ring with a right-angled triangle vertical cross section and two inclined blocks. Two curved blocks are fixedly connected to the surface of the sleeve. The inclined block portion of the collar is engaged between the two curved blocks. The circular ring portion of the collar is fixedly connected to the two curved blocks by a spring.

[0016] An assembly method for a quick-release high-speed steel alloy drill bit with double-clamp axial locking:

[0017] Step 1: Insert the drill bit assembly into the drill chuck assembly: Press the chuck into the housing so that it slides in the inner housing. The movement of the chuck moves the clamping block, which in turn moves the toothed block. At this point, insert the tool holder into the housing and into the clamping block.

[0018] Step 2: The drill bit assembly enters the limiting mechanism to complete the pre-installation: Insert the conical end of the tool holder into the through hole opened inside the moving block. Continue to move the tool holder, and the tool holder will push the moving block. After feeling the resistance of the moving block, try to rotate the tool holder. If the tool holder cannot rotate, it means that the arc-shaped block fixed on the tool holder is stuck in the anti-disengagement groove. Then, use the tool holder to push the moving block while rotating the tool holder until the tool holder can rotate in the anti-disengagement groove. Release the tool holder, and the moving block returns to its original position and pushes the tool holder to move a certain distance in the opposite direction. At this time, the arc-shaped block can slide in the anti-disengagement groove and push open the rotating rod, causing the rotating rod to rotate to a certain extent. Then the arc-shaped block will be fixed in the anti-disengagement groove.

[0019] Step 3: Axial locking of the drill bit assembly by the drill chuck assembly and the limiting mechanism: Tighten the fixing bolt with a hex wrench so that the bottom end of the fixing bolt presses against the inclined block of the collar, pushing the collar to move. The collar then pushes the rotating rod to rotate. After the rotating rod rotates a certain angle in the anti-disengagement groove, one end abuts against the arc-shaped block. At the same time, one end of the top column is engaged in the annular groove. At this time, place the toothed block into the outer shell, and then insert the connecting part into the outer shell. One side of the toothed block engages with the fixing bolt, restricting the rotation of the fixing bolt. The connecting part pushes the clamping block to move through the toothed block. The clamping block drives the chuck to move in the inner shell, so that the chuck clamps the tool holder. The outer shell and the connecting part are clamped to complete the installation.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, the drill bit assembly and limiting mechanism enable the drill bit to be automatically guided to the correct position when it is clamped, through its specific shape and the cooperation of the other components. At the same time, the operator can quickly judge whether the assembly is accurate by sensing the resistance and rotation status feedback, without the need for additional testing tools.

[0022] 2. In this invention, a double locking structure is used to form a double axial limit, while also restricting the radial rotation of the drill bit. This reduces the risk of the drill bit moving axially, swinging radially, or even accidentally flying off under high-speed rotation and strong impact once it is installed in place.

[0023] 3. In this invention, the complex operation of multiple alignments and gradual tightening required by traditional methods is simplified, allowing operators to complete locking and clamping with simple tools. At the same time, through the cooperation between various components, the core locking component can be prevented from falling off, thus affecting the performance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0026] Figure 3 This is a cross-sectional structural diagram of the drill chuck assembly of the present invention;

[0027] Figure 4 This is a schematic diagram of the drill bit assembly structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the limiting mechanism structure of the present invention;

[0029] Figure 6 This is an exploded view of the limiting mechanism of the present invention;

[0030] Figure 7 This is a cross-sectional view of the limiting mechanism of the present invention;

[0031] Figure 8 This is a schematic diagram of the extrusion rod assembly structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the guiding component structure of the present invention.

[0033] In the diagram: 1. Drill chuck assembly; 11. Outer shell; 12. Inner shell; 13. Chuck; 14. Toothed block; 15. Connecting part;

[0034] 2. Fixing bolts; 3. Anti-detachment ring;

[0035] 4. Drill bit assembly; 41. Tool holder; 42. Annular groove; 43. Arc block;

[0036] 5. Limiting mechanism; 51. Clamping block; 52. Slot; 53. Air hole; 54. Extrusion rod assembly; 541. Elastic telescopic rod; 542. Piston rubber; 543. Top column; 55. Guide assembly; 551. Fixed plate; 552. Moving block; 56. Anti-disengagement mechanism; 57. Sleeve; 58. Rotating rod; 59. Collar. Detailed Implementation

[0037] Please see Figures 1-9 The present invention provides a technical solution:

[0038] A quick-release high-speed steel alloy drill bit with double-clamp axial locking and an assembly method thereof.

[0039] As a further implementation of this solution, a drill chuck assembly 1 and a fixing bolt 2 are included. The fixing bolt 2 is installed in the drill chuck assembly 1, and a drill bit assembly 4 is inserted into the drill chuck assembly 1. A limiting mechanism 5 is installed in the drill chuck assembly 1. The drill bit assembly 4 includes a tool holder 41, which has an annular groove 42 along its circumference. An arc-shaped block 43 is fixedly connected to the outside of the tool holder 41. The limiting mechanism 5 includes a clamping block 51, which has a slot 52 at one end and an air hole 53 on its inner side. The air hole 53 contains a... The device includes a compression rod assembly 54, a guide assembly 55 installed inside the clamping block 51, an anti-disengagement groove 56 in the clamping block 51, a sleeve 57 welded to the outside of the clamping block 51, two symmetrical grooves at one end of the sleeve 57, a rotating rod 58 rotatably connected in the groove at one end of the sleeve 57, and a collar 59 fitted on the sleeve 57. The compression rod assembly 54 includes an elastic telescopic rod 541, a piston rubber 542 wrapped around the outside of the elastic telescopic rod 541, and a top column 543 fixedly connected to the bottom end of the elastic telescopic rod 541.

[0040] As a further implementation of this solution, an anti-disengagement ring 3 is embedded and fixed in the drill chuck assembly 1. The anti-disengagement ring 3 is sleeved on the fixing bolt 2. One end of the fixing bolt 2 abuts against the outer side of the collar 59. The design of the anti-disengagement ring 3 can prevent the fixing bolt 2 from falling off when it is not tightened to form a stable threaded connection with the drill chuck assembly 1. The design of one end of the fixing bolt 2 abutting against the outer side of the collar 59 can restrict the movement of the collar 59, and can also cause the collar 59 to move to a certain extent by squeezing it during the tightening process.

[0041] As a further implementation of this solution, the drill chuck assembly 1 includes a housing 11, an inner housing 12 inside the housing 11, a chuck 13 slidably disposed inside the inner housing 12, a toothed block 14 installed inside the housing 11, a connecting part 15 inserted into the housing 11, a portion of the chuck 13 being engaged in a slot 52, one side of the chuck 13 being tightly against the outer side of the drill bit assembly 4, the toothed block 14 engaging with a fixing bolt 2, and one side of the toothed block 14 simultaneously engaging with one end of a clamping block 51. The chuck 13 is engaged in the slot 52. The groove 52 is connected to the clamping block 51 and cooperates with the inner shell 12, so that when it moves with the clamping block 51, it can change the spacing on the outer side of the drill bit assembly 4 on one side, thereby clamping or releasing the drill bit assembly 4. The toothed block 14 is designed so that when it is abutted by the connecting part 15 and installed in the outer shell 11, it can restrict the clamping block 51 on the one hand, and restrict the rotation of the fixing bolt 2 by engaging with the fixing bolt 2 on the other hand.

[0042] As a further implementation of this solution, a portion of the tool holder 41 is inserted into the clamping block 51, and the arc-shaped block 43 is locked in the anti-disengagement groove 56. The anti-disengagement groove 56 is U-shaped. The design of the arc-shaped block 43 being locked in the anti-disengagement groove 56, in conjunction with the shape of the anti-disengagement groove 56, can better enable the installer to be aware of whether the tool holder 41 is installed correctly in the blind spot, while also preventing the tool holder 41 from rotating radially during use.

[0043] As a further implementation of this solution, the air hole 53 is T-shaped. The outer side of the piston rubber 542 is in close contact with the inner side of the air hole 53. The telescopic end of the elastic telescopic rod 541 passes through the air hole 53 and abuts against the drill chuck assembly 1. The end of the top post 543 away from the elastic telescopic rod 541 is arc-shaped and is set in the annular groove 42. First, when the conical end of the tool holder 41 contacts the top post 543, as the tool holder 41 moves, the tool holder 41 will push open the top post 543. At this time, the top post 543 drives the piston rubber 542 to move through the elastic telescopic rod 541. When the piston rubber 542 moves, due to the special shape of the air hole 53, air can be discharged through the air hole 53 in the first half of its movement, while air cannot be discharged in the second half of its movement. The air vent 53 not only expels air but also compresses the air in the remaining space formed by the air vent 53 and itself. At the same time, in the latter half of its movement, the telescopic end of the elastic telescopic rod 541 will abut against the drill chuck assembly 1 and store elastic potential energy as it moves. Therefore, the top column 543 will be subjected to the reaction force generated by the piston rubber 542 and the elastic telescopic rod 541, so that it is stably stuck in the annular groove 42, restricting the axial movement of the tool holder 41. Since the reaction force generated by the piston rubber 542 and the elastic telescopic rod 541 on the top column 543 comes from air compression and the elastic potential energy of the structure itself, the failure of the force generated by one form can be avoided, so that the top column 543 can maintain its reset ability for a long time.

[0044] As a further implementation of this solution, the guide assembly 55 includes a fixed disk 551 fixedly connected to the clamping block 51. The fixed disk 551 is fixedly connected to the moving block 552 via a spring. Both the fixed disk 551 and the moving block 552 have through holes on their inner sides. One end of the tool holder 41 is tapered, and the tapered end of the tool holder 41 is inserted into the through hole on the inner side of the moving block 552. The tapered design of one end of the tool holder 41 allows it to be better aligned and inserted into the moving block 552, and guides the tool holder 41 and the moving block 552. The moving block 552 is axially aligned, thereby generating an interaction force between the two. The fixed plate 551 is fixedly connected to the moving block 552 by a spring. On the one hand, it provides the moving block 552 with a reset capability. On the other hand, the compression of the spring makes it easier to sense whether the tool holder 41 has pushed the moving block 552 to move. At the same time, the movement of the moving block 552 causes the spring to accumulate elastic potential energy, thereby generating a reaction force on itself. The reaction force on the moving block 552 is transmitted to the tool holder 41, which can help stabilize the tool holder 41.

[0045] As a further implementation of this solution, the anti-detachment groove 56 is connected to the groove at one end of the sleeve 57. A portion of the rotating rod 58 is inserted into the anti-detachment groove 56, and the end of the rotating rod 58 inserted into the anti-detachment groove 56 abuts against the outer side of the arc-shaped block 43. The collar 59 consists of a circular ring with a right-angled triangular vertical cross-section and two inclined blocks. Two curved blocks are fixedly connected to the surface of the sleeve 57. The inclined block portion of the collar 59 is engaged between the two curved blocks. The circular portion of the collar 59 is fixedly connected to the two curved blocks by a spring. The design of the anti-detachment groove 56 being connected to the groove at one end of the sleeve 57 allows the rotating rod 58 to rotate to a certain extent in the anti-detachment groove 56 and the groove at one end of the sleeve 57, when the arc-shaped block 43 enters... When the anti-detachment groove 56 is in place, it will first be guided by the anti-detachment groove 56 to contact the rotating rod 58, so that the rotating rod 58 rotates and then is axially locked in the anti-detachment groove 56. When relative movement occurs between the collar 59 and the sleeve 57, one side of the annular part of the collar 59 will first push the rotating rod 58, so that the rotating rod 58 rotates back. The shape of the arc block 43 prevents the rotating rod 58 from being stuck by it, but instead makes one end of the rotating rod 58 abut between the collar 59 and the arc block 43. The inclined block part of the collar 59 and the two curved blocks fixedly connected to the surface of the sleeve 57, as well as the spring connected to the annular part of the collar 59, are to guide the relative sliding between the sleeve 57 and the collar 59 to prevent radial displacement and to help the collar 59 to reset.

[0046] Workflow:

[0047] Press the collet 13 into the housing 11, causing it to slide within the inner housing 12. The movement of the collet 13 moves the clamping block 51, which in turn moves the toothed block 14. At this point, insert the tool holder 41 into the housing 11 and into the clamping block 51. Insert the tapered end of the tool holder 41 into the through hole on the inner side of the moving block 552. Continue moving the tool holder 41; it will push the moving block 552. Feel the resistance from the moving block 552, and try to rotate the tool holder 41. If the tool holder 41 cannot rotate, it means the arc-shaped block 43 fixed on the tool holder 41 is engaged in the anti-disengagement groove 56. Then, use the tool holder 41 to push the moving block 552 while simultaneously rotating the tool holder 41 until it can rotate within the anti-disengagement groove 56. Release the tool holder 41; the moving block 552 returns to its original position, pushing the tool holder 41 a certain distance in the opposite direction. At this point, the arc-shaped block 43 can... The rotating rod 58 slides and pushes open in the anti-detachment groove 56, causing it to rotate to a certain extent. Then, the arc-shaped block 43 is fixed in the anti-detachment groove 56. The fixing bolt 2 is tightened with a hex wrench, so that the bottom end of the fixing bolt 2 presses against the inclined block part of the collar 59, pushing the collar 59 to move. The collar 59 pushes the rotating rod 58 to rotate. After the rotating rod 58 rotates a certain angle in the anti-detachment groove 56, one end abuts against the arc-shaped block 43. At the same time, one end of the top column 543 is inserted into the annular groove 42. At this time, the toothed block 14 is placed into the outer shell 11, and then the connecting part 15 is inserted into the outer shell 11. One side of the toothed block 14 engages with the fixing bolt 2, restricting the rotation of the fixing bolt 2. The connecting part 15 pushes the clamping block 51 to move through the toothed block 14. The clamping block 51 drives the chuck 13 to move in the inner shell 12, so that the chuck 13 clamps the tool handle 41, clamping the outer shell 11 and the connecting part 15, completing the installation.

[0048] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A quick-release high-speed steel alloy drill bit with double snap-fit ​​axial locking, comprising a drill chuck assembly (1) and a fixing bolt (2), characterized in that: The drill chuck assembly (1) is equipped with a fixing bolt (2), the drill chuck assembly (1) is inserted with a drill bit assembly (4), and the drill chuck assembly (1) is equipped with a limit mechanism (5). The drill bit assembly (4) includes a shank (41), the shank (41) has an annular groove (42) in the circumferential direction, and an arc-shaped block (43) is fixedly connected to the outside of the shank (41). The limiting mechanism (5) includes a clamping block (51), one end of which is provided with a slot (52), and the inner side of the clamping block (51) is provided with an air hole (53). An extrusion rod assembly (54) is provided in the air hole (53), and a guide assembly (55) is installed on the inner side of the clamping block (51). An anti-detachment groove (56) is provided in the clamping block (51), and a sleeve (57) is welded to the outer side of the clamping block (51). Two symmetrical grooves are provided at one end of the sleeve (57), and a rotating rod (58) is rotatably connected in the groove at one end of the sleeve (57). A collar (59) is fitted on the sleeve (57). The compression rod assembly (54) includes an elastic telescopic rod (541), the outer side of which is wrapped with piston rubber (542), and the bottom end of the elastic telescopic rod (541) is fixedly connected to a top column (543).

2. The quick-release high-speed steel alloy drill bit with double-clamp axial locking as described in claim 1, characterized in that: The drill chuck assembly (1) is fitted with an anti-disengagement ring (3), which is sleeved on a fixing bolt (2). One end of the fixing bolt (2) abuts against the outer side of the collar (59).

3. The quick-release high-speed steel alloy drill bit with double snap-fit ​​axial locking as described in claim 1, characterized in that: The drill chuck assembly (1) includes a housing (11), an inner housing (12) is provided inside the housing (11), a chuck (13) is slidably provided inside the inner housing (12), a toothed block (14) is installed inside the housing (11), and a connecting part (15) is inserted into the housing (11).

4. The quick-release high-speed steel alloy drill bit with double snap-fit ​​axial locking according to claim 3, characterized in that: Part of the chuck (13) is locked in the slot (52). One side of the chuck (13) is in close contact with the outside of the drill bit assembly (4). The toothed block (14) meshes with the fixing bolt (2), and one side of the toothed block (14) is in close contact with one end of the clamping block (51).

5. A quick-release high-speed steel alloy drill bit with double-clamp axial locking as described in claim 1, characterized in that: Part of the handle (41) is inserted into the clamping block (51), and the arc-shaped block (43) is locked in the anti-disengagement groove (56), which is U-shaped.

6. A quick-release high-speed steel alloy drill bit with double-clamp axial locking as described in claim 1, characterized in that: The air hole (53) is T-shaped. The outer side of the piston rubber (542) is in close contact with the inner side of the air hole (53). The telescopic end of the elastic telescopic rod (541) passes through the air hole (53) and abuts against the drill chuck assembly (1). The end of the top column (543) away from the elastic telescopic rod (541) is arc-shaped and is set in the annular groove (42).

7. A quick-release high-speed steel alloy drill bit with double-clamp axial locking as described in claim 1, characterized in that: The guide assembly (55) includes a fixed plate (551) fixedly connected to the clamping block (51). The fixed plate (551) is fixedly connected to the moving block (552) by a spring. Both the fixed plate (551) and the moving block (552) have through holes on their inner sides. One end of the knife handle (41) is tapered, and the tapered end of the knife handle (41) is inserted into the through hole on the inner side of the moving block (552).

8. A quick-release high-speed steel alloy drill bit with double snap-lock axial locking as described in claim 1, characterized in that: The anti-detachment groove (56) is connected to the groove at one end of the sleeve (57). Part of the rotating rod (58) is inserted into the anti-detachment groove (56), and the end of the rotating rod (58) inserted into the anti-detachment groove (56) abuts against the outside of the arc block (43).

9. A quick-release high-speed steel alloy drill bit with double snap-lock axial locking as described in claim 1, characterized in that: The collar (59) consists of a circular ring with a right-angled triangle vertical cross section and two inclined blocks. Two curved blocks are fixedly connected to the surface of the sleeve (57). The inclined block part of the collar (59) is locked between the two curved blocks. The circular part of the collar (59) is fixedly connected to the two curved blocks by a spring.

10. An assembly method for a quick-release high-speed steel alloy drill bit with double-clamp axial locking according to any one of claims 1-9, characterized in that: S1: Insert the drill bit assembly (4) into the drill chuck assembly (1): Press the chuck (13) into the housing (11) so that the chuck (13) slides in the inner housing (12). The movement of the chuck (13) drives the clamping block (51) to move. The movement of the clamping block (51) pushes the toothed block (14) to move. At this time, insert the tool holder (41) into the housing (11) and insert it into the clamping block (51). S2: The drill bit assembly (4) enters the limiting mechanism (5) to complete the pre-installation: Insert the conical end of the tool holder (41) into the through hole opened inside the moving block (552). At this time, continue to move the tool holder (41). The tool holder (41) will push the moving block (552). After feeling the resistance of the moving block (552), try to rotate the tool holder (41). If the tool holder (41) cannot be rotated, it means that the arc-shaped block (43) fixed on the tool holder (41) is stuck in the anti-disengagement groove (56). Then, use the handle (41) to push the moving block (552) while rotating the handle (41) until the handle (41) can rotate in the anti-detachment groove (56). Release the handle (41), and the moving block (552) returns to its original position and pushes the handle (41) to move a certain distance. At this time, the arc block (43) can slide in the anti-detachment groove (56) and push open the rotating rod (58), causing the rotating rod (58) to rotate to a certain extent. Then the arc block (43) will be fixed in the anti-detachment groove (56). S3: Axial locking of the drill bit assembly (4) by the drill chuck assembly (1) and the limiting mechanism (5): Tighten the fixing bolt (2) with a hex wrench so that the bottom end of the fixing bolt (2) presses against the inclined block part of the collar (59), pushing the collar (59) to move, so that the collar (59) pushes the rotating rod (58) to rotate. After the rotating rod (58) rotates a certain angle in the anti-disengagement groove (56), one end abuts against the arc-shaped block (43). At the same time, one end of the top column (543) is inserted into the annular groove (42). Place the toothed block (14) into the outer shell (11), and then insert the connecting part (15) into the outer shell (11). One side of the toothed block (14) engages with the fixing bolt (2), restricting the rotation of the fixing bolt (2). The connecting part (15) pushes the clamping block (51) to move through the toothed block (14). The clamping block (51) drives the chuck (13) to move in the inner shell (12), so that the chuck (13) clamps the tool holder (41). The outer shell (11) and the connecting part (15) are clamped to complete the installation.

Images