Dual-purpose speed wrench for assembling and disassembling drill chuck

Abstract

The utility model provides a dual-purpose speed wrench for assembling and disassembling a drill chuck. The dual-purpose speed wrench comprises a fixed lantern ring, a pusher dog, a handle and a fixed pin, the drill chuck is sleeved with the fixing lantern ring which is fixed through an axial positioning structure. A through groove is formed in the outer wall of the fixing lantern ring, and the pusher dog is connected with the through groove in a pivoted mode through the fixing pin so as to rotate in the axial force direction of the drill chuck outer sleeve. An outer sleeve clamping part is arranged at the head part of the pusher dog and is clamped with the drill chuck outer sleeve clamping groove; and a handle connecting end is arranged at the tail part of the pusher dog and is fixedly connected with one end of the handle. The handle is pulled in the axial direction, assembling and disassembling of a drill bit of the drill chuck are achieved, and the problem that the drill chuck loses efficacy due to improper assembling and disassembling of the drill chuck is solved.

Description

Technical Field

[0001] This application relates to the field of drill chuck loading and unloading technology, and in particular to a quick-release wrench for both loading and unloading drill chucks. Background Technology

[0002] In the field of machining, drill chucks, as key components of lathes, drilling machines, and other equipment, play a crucial role in holding drill bits for precise drilling. Loading and unloading drill chucks primarily relies on manual operation using specialized tools. However, due to the unique nature of their internal structure (such as multi-jaw linkage mechanisms), traditional loading and unloading methods are complex and inefficient. Especially when frequently changing drill bits of different specifications, improper force application can easily lead to clamping failure, severely impacting machining accuracy and equipment lifespan. Therefore, developing a tool that can quickly and reliably complete drill chuck loading and unloading operations has become a pressing need in the industry.

[0003] In related technologies, a wrench-type loading and unloading tool is typically used. Its core structure includes the wrench body and a bevel gear transmission assembly. Specifically, the wrench is fitted onto the outer sleeve of the drill chuck through a central hole, and the extended lever arm bevel gear inside forms a meshing pair with the gear ring inside the drill chuck. The operator drives the bevel gear to rotate by rotating the wrench, and the transmission characteristics of the gear pair force the three jaws of the drill chuck to open or close synchronously, thereby realizing the loading and unloading operation of the drill bit.

[0004] However, while the proposed solution can fulfill its basic functions, its transmission mechanism has inherent defects. In practical use, it has been found that the proposed wheel-type tool has two major drawbacks: First, because the bevel gear meshing transmission requires a large rotational torque, the operator is prone to causing plastic deformation or even breakage of the wheel lever arm during force application; second, long-term, high-frequency meshing leads to fatigue wear of the drill chuck's gear ring, resulting in decreased transmission accuracy and ultimately causing technical malfunctions such as reduced clamping force and drill bit slippage. These problems not only reduce the tool's service life but also increase equipment maintenance costs, severely hindering the improvement of processing and production efficiency. Utility Model Content

[0005] This application provides a quick-release wrench for both installing and removing drill chucks, in order to solve the problem of drill chuck failure caused by improper installation or removal.

[0006] This application provides a quick-release wrench for both loading and unloading drill chucks, comprising: a retaining collar, a pawl, a handle, and a retaining pin;

[0007] The fixing collar is fitted onto the outside of the drill chuck and fixed by an axial positioning structure;

[0008] The outer wall of the fixed collar is provided with a through groove, and the pawl is pivotally connected to the through groove through the fixed pin so as to rotate along the axial force direction of the drill chuck outer sleeve.

[0009] The head of the pawl is provided with an outer sleeve engaging part, which engages with the outer sleeve groove of the drill chuck; the tail of the pawl is provided with a handle connecting end, which is fixedly connected to one end of the handle.

[0010] The drill chuck loading and unloading quick wrench utilizes a fixed collar to securely mount and axially position itself outside the drill chuck. The pawl is pivotally connected to the through groove of the fixed collar via a fixed pin, allowing the pawl to rotate flexibly along the axial direction of the drill chuck outer sleeve. The head of the pawl is tightly engaged with the slot of the drill chuck outer sleeve, and the tail handle connection end is fixedly connected to the handle. This structural design not only simplifies the loading and unloading process of the drill chuck and improves work efficiency, but also effectively reduces the problem of drill chuck failure caused by improper force application in traditional loading and unloading methods.

[0011] Optionally, the rotation angle range between the pawl and the fixing pin is 0°-210°.

[0012] By setting the rotation angle range of the pawl and the fixing pin to 0°-210°, the pawl can rotate flexibly and accurately around the fixing pin, thereby fully adapting to the loading and unloading needs of different specifications of drill chucks and greatly improving the flexibility and convenience of loading and unloading operations.

[0013] Optionally, the outer sleeve snap-fit ​​portion has a crescent-shaped structure; a lip-shaped sealing ring is provided on the inner side of the outer sleeve snap-fit ​​portion, and the lip-shaped sealing ring is located between the outer sleeve snap-fit ​​portion and the drill chuck outer sleeve groove.

[0014] The outer casing retaining part adopts a crescent-shaped structure design and is equipped with a lip-shaped sealing ring on the inner side. The lip-shaped sealing ring fits tightly between the slots of the outer casing of the drill chuck, which not only enhances the stability and firmness of the retaining part and effectively prevents slippage or loosening during loading and unloading, but also effectively blocks the intrusion of external impurities or liquids through its excellent sealing performance, further ensuring the service life and operational accuracy of the drill chuck and loading and unloading tools.

[0015] Optionally, the through groove of the fixing collar is an elongated slot extending in the circumferential direction, the length direction of the through groove is parallel to the axial direction of the drill chuck outer sleeve, and the width of the through groove matches the thickness clearance of the claw.

[0016] The through groove designed on the fixed collar is an elongated slot extending in the circumferential direction. Its length direction is consistent with the axial direction of the drill chuck outer sleeve, and the width of the through groove is precisely calculated to form a perfect clearance fit with the thickness of the claw. This design not only ensures that the claw can rotate smoothly and unobstructed along the axial direction of the drill chuck outer sleeve in the through groove, realizing flexible and efficient loading and unloading operations, but also ensures the compactness and stability of the structure, reducing the shaking or jamming problems caused by excessive clearance, and improving the overall performance and user experience of the drill chuck loading and unloading quick wrench.

[0017] Optionally, a reinforcing rib is provided between the outer sleeve snap-fit ​​portion and the handle connection end, and the extending direction of the reinforcing rib is perpendicular to the rotation plane of the pawl.

[0018] A reinforcing rib is added between the outer sleeve snap-fit ​​part and the handle connection end, and the extension direction of the reinforcing rib is perpendicular to the rotation plane of the pawl. This not only enhances the overall strength and rigidity of the pawl and effectively resists the bending or torsional stress that may be generated during loading and unloading, ensuring the stability and reliability of the pawl rotation, but also optimizes the stress distribution of the pawl, extends its service life, and further improves the durability and operating efficiency of the drill chuck loading and unloading quick wrench.

[0019] Optionally, the surface of the handle is provided with anti-slip texture, and the connection between the handle and the pawl is provided with a limiting protrusion for limiting the maximum rotation angle of the pawl.

[0020] The handle has anti-slip textures on its surface, which greatly improves the user's grip stability and safety during operation, effectively preventing accidental slippage or operational errors caused by hand slippage. At the same time, a limiting protrusion is set at the connection between the handle and the claw, which can precisely limit the maximum rotation angle of the claw, ensuring the accuracy and controllability of the claw during rotation, reducing structural damage or functional failure that may be caused by excessive rotation, and further enhancing the practicality and durability of the wrench.

[0021] Optionally, the handle is a hollow tubular structure, and the outer sleeve snap-fit ​​part is fixedly connected to one end of the handle by a snap fastener.

[0022] The hollow tubular handle not only achieves lightweight design, making it easier for users to operate for extended periods without fatigue, but also securely connects the outer casing to one end of the handle via a snap-fit ​​mechanism. This is both simple and quick, while ensuring structural stability and reliability, allowing users to quickly load and unload the drill chuck and improve work efficiency.

[0023] Optionally, an elastic buffer layer is provided between the contact surfaces of the fixing collar and the pawl, and the thickness of the elastic buffer layer is 2-5mm.

[0024] An elastic buffer layer with a thickness of 2-5mm is set between the contact surfaces of the fixed collar and the claw. This not only improves the fit and sealing between the structures, effectively reduces friction and wear, and extends the service life of the tool, but also protects the fixed collar and claw from external impacts and vibrations through the buffering and shock absorption effect of the elastic buffer layer, ensuring the stability and reliability of the wrench in complex working environments.

[0025] Optionally, the bottom of the fixing collar is provided with an adjustable magnetic base; the middle of the handle is provided with a magnetic groove, in which a magnetic scale is embedded, and the scale accuracy of the embedded magnetic scale is 5°.

[0026] An adjustable magnetic base is added to the bottom of the fixed collar, which not only makes it easy to firmly attach the wrench to the metal workbench, improving the stability and convenience of operation, but also cleverly set a magnetic groove in the middle of the handle to embed a magnetic scale with a scale accuracy of 5°. This detail provides users with an intuitive angle reference during operation, ensuring the accuracy and controllability of the pawl rotation.

[0027] Optionally, the axial positioning structure of the fixed collar includes two sets of symmetrically distributed spring steel jaws; one end of the spring steel jaw is fixedly connected to the inner wall of the fixed collar, and the other end of the spring steel jaw is provided with a hook, which engages in the groove of the drill chuck.

[0028] Stable positioning is achieved through two sets of symmetrically distributed spring steel claws. One end of the spring steel claw is fixed to the inner wall of the fixed collar, while the other end of the claw is firmly engaged in the groove of the drill chuck. This not only ensures a tight connection and accurate positioning between the fixed collar and the drill chuck, effectively preventing shaking or falling off during loading and unloading, but also the elastic design of the spring steel claws makes the engagement process smoother and easier to operate, improving the working efficiency and stability of the drill chuck loading and unloading quick wrench.

[0029] As can be seen from the above technical solution, this application provides a quick-release wrench for both loading and unloading drill chucks, including: a fixed collar, a pawl, a handle, and a fixing pin; the fixed collar is fitted onto the outside of the drill chuck and fixed by an axial positioning structure; the outer wall of the fixed collar has a through groove, and the pawl is pivotally connected to the through groove via the fixing pin to rotate along the axial force direction of the outer sleeve of the drill chuck; the head of the pawl has an outer sleeve engaging portion, which engages with the outer sleeve groove of the drill chuck; the tail of the pawl has a handle connecting end, which is fixedly connected to one end of the handle. By turning the handle axially, the drill chuck can be loaded and unloaded to replace the drill bit, thus solving the problem of drill chuck failure caused by improper loading and unloading. Attached Figure Description

[0030] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the drill chuck loading and unloading quick-release wrench described in the embodiments of this application;

[0032] Figure 2 This is a schematic diagram of the installation structure of the drill chuck detachable quick wrench described in the embodiments of this application.

[0033] Illustration:

[0034] Among them, 1-fixed collar; 11-through groove; 100-drill chuck; 2-pawl; 3-handle; 4-fixed pin. Detailed Implementation

[0035] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application.

[0036] Drill chucks are common tools on lathes, drilling machines, and other mechanical equipment. During installation and disassembly, a wrench is used for positioning through a wrench hole. The bevel teeth on the wrench, with their extended lever arm, mesh with the gears on the gear ring to open and close the three jaws of the drill chuck, thus achieving the purpose of clamping and disassembling. However, in some embodiments, improper tool handling can easily cause the wrench lever arm to bend. With prolonged use, the bevel teeth and gears on the gear ring of the lower drill chuck are prone to wear and failure, leading to the drill chuck becoming unusable. Therefore, how to avoid drill chuck failure due to improper installation and disassembly is a technical problem that needs to be solved by those skilled in the art.

[0037] To address the issue of drill chuck failure caused by improper installation or removal, see [link to relevant documentation]. Figures 1-2 This application provides a quick-release wrench for both loading and unloading a drill chuck, comprising: a fixing collar 1, a pawl 2, a handle 3, and a fixing pin 4; the fixing collar 1 is fitted onto the outside of the drill chuck 100 and fixed by an axial positioning structure; the outer wall of the fixing collar 1 is provided with a through groove 11, and the pawl 2 is pivotally connected to the through groove 11 by the fixing pin 4 to rotate along the axial force direction of the outer sleeve of the drill chuck 100; the head of the pawl 2 is provided with an outer sleeve engaging portion, which engages with the outer sleeve slot of the drill chuck 100; the tail of the pawl 2 is provided with a handle 3 connecting end, which is fixedly connected to one end of the handle 3.

[0038] It should be understood that the pawl 2 is inserted into the through groove 11 of the fixing collar 1 by the fixing pin 4, and can be rotated along the axial direction of the outer sleeve of the drill chuck 100 by the handle 3, so that the pawl 2 engages with the slot on the outer sleeve of the drill chuck 100, thereby driving the outer sleeve of the drill chuck 100 to rotate.

[0039] Specifically, after clamping the outer sleeve of the drill chuck 100 with the fixing collar 1, the handle 3 is rotated to the appropriate position to engage the claw 2 with the slot of the outer sleeve of the drill chuck 100. Then, the handle 3 is rotated so that the claw 2 drives the outer sleeve of the drill chuck 100 to rotate in the opposite direction along the axis of the handle 3, thereby realizing the opening and closing of the drill claw of the drill chuck 100.

[0040] The drill chuck loading and unloading quick wrench uses a fixed collar 1 to securely mount and axially position the drill chuck 100. The pawl 2 is pivotally connected to the through groove 11 of the fixed collar 1 via a fixed pin 4, allowing the pawl 2 to rotate flexibly along the outer sleeve of the drill chuck 100. The head of the pawl 2 is tightly engaged with the outer sleeve groove of the drill chuck 100, and the tail handle 3 is fixedly connected to the handle 3. This structural design not only simplifies the loading and unloading process of the drill chuck 100 and improves work efficiency, but also effectively reduces the problem of drill chuck 100 failure caused by improper force application in traditional loading and unloading methods.

[0041] In some embodiments, the rotation angle range between the pawl 2 and the fixing pin 4 is 0°-210°.

[0042] It should be understood that, since the fixed collar 1 has a circumferential through groove 11, the through groove 11 allows the pawl 2 to rotate within the through groove range. The pawl 2 can engage with the drill chuck 100 axially in the slot so that the drill chuck 100 rotates relative to the fixed collar 1. The through groove 11 can limit the rotation range of the pawl 2 and the handle 3. When the pawl 2 engages with the slot on the outer sleeve of the drill chuck 100, the handle 3 drives the pawl 2 to rotate up and down within the through groove 11 to adjust the rotation angle.

[0043] By setting the rotation angle range of the pawl 2 and the fixed pin 4 to 0°-210°, the pawl 2 can rotate around the fixed pin 4 flexibly and accurately, thereby fully adapting to the loading and unloading needs of drill chucks 100 of different specifications and greatly improving the flexibility and convenience of loading and unloading operations.

[0044] In some embodiments, the outer sleeve engagement portion has a crescent-shaped structure; a lip-shaped sealing ring is provided on the inner side of the outer sleeve engagement portion, and the lip-shaped sealing ring is located between the outer sleeve engagement portion and the outer sleeve groove of the drill chuck 100.

[0045] The outer casing features a crescent-shaped design with a lip-shaped sealing ring on the inner side. The lip-shaped sealing ring fits tightly between the outer casing groove of the drill chuck 100, which not only enhances the stability and firmness of the casing and effectively prevents slippage or loosening during loading and unloading, but also effectively blocks the intrusion of external impurities or liquids through its excellent sealing performance, further ensuring the service life and operational accuracy of the drill chuck 100 and loading and unloading tools.

[0046] In some embodiments, the through groove 11 of the fixing collar 1 is an elongated slot extending in the circumferential direction. The length direction of the through groove 11 is parallel to the axial direction of the outer sleeve of the drill chuck 100, and the width of the through groove 11 matches the thickness gap of the claw 2.

[0047] The through groove 11 designed on the fixed collar 1 is an elongated slot extending in the circumferential direction. Its length direction is consistent with the axial direction of the outer sleeve of the drill chuck 100. The width of the through groove 11 is precisely calculated to form a perfect clearance fit with the thickness of the claw 2. This design not only ensures that the claw 2 can rotate smoothly and unobstructed along the axial direction of the outer sleeve of the drill chuck 100 in the through groove 11, realizing flexible and efficient loading and unloading operations, but also ensures the compactness and stability of the structure, reduces the shaking or jamming problems caused by excessive clearance, and improves the overall performance and user experience of the drill chuck loading and unloading quick wrench.

[0048] In some embodiments, a reinforcing rib is provided between the outer sleeve snap-fit ​​portion and the connecting end of the handle 3, and the extending direction of the reinforcing rib is perpendicular to the rotation plane of the pawl 2.

[0049] A reinforcing rib is added between the outer sleeve snap-fit ​​part and the connecting end of the handle 3, and the extension direction of the reinforcing rib is perpendicular to the rotation plane of the pawl 2. This not only enhances the overall strength and rigidity of the pawl 2 and effectively resists the bending or torsional stress that may be generated during loading and unloading, ensuring the stability and reliability of the rotation of the pawl 2, but also optimizes the stress distribution of the pawl 2, extends its service life, and further improves the durability and operating efficiency of the drill chuck loading and unloading quick wrench.

[0050] In some embodiments, the surface of the handle 3 is provided with anti-slip texture, and the connection between the handle 3 and the pawl 2 is provided with a limiting protrusion for limiting the maximum rotation angle of the pawl 2.

[0051] The surface of the handle 3 is textured with anti-slip material, which greatly improves the stability and safety of the user's grip during operation and effectively prevents accidental slippage or operational errors caused by hand slippage. At the same time, a limiting protrusion is set at the connection between the handle 3 and the claw 2, which can precisely limit the maximum rotation angle of the claw 2, ensuring the accuracy and controllability of the claw 2 during rotation, reducing structural damage or functional failure that may be caused by excessive rotation, and further enhancing the practicality and durability of the wrench.

[0052] In some embodiments, the handle 3 is a hollow tubular structure, and the outer sleeve is fixedly connected to one end of the handle 3 by a snap fastener.

[0053] The hollow tubular handle 3 not only achieves lightweight design, making it easier for users to operate for extended periods without fatigue, but also securely connects the outer sleeve to one end of the handle 3 via a snap-fit ​​mechanism. This is both simple and quick, while ensuring structural stability and reliability, allowing users to quickly load and unload the drill chuck 100 and improve work efficiency.

[0054] In some embodiments, an elastic buffer layer is provided between the contact surfaces of the fixing collar 1 and the pawl 2, and the thickness of the elastic buffer layer is 2-5mm.

[0055] An elastic buffer layer with a thickness of 2-5mm is set between the contact surfaces of the fixed collar 1 and the claw 2. This not only improves the fit and sealing between the structures, effectively reduces friction and wear, and extends the service life of the tool, but also protects the fixed collar 1 and the claw 2 from external impacts and vibrations through the buffering and shock absorption effect of the elastic buffer layer, ensuring the stability and reliability of the wrench in complex working environments.

[0056] In some embodiments, the bottom of the fixing collar 1 is provided with an adjustable magnetic base; the middle of the handle 3 is provided with a magnetic groove, in which a magnetic scale is embedded, and the scale accuracy of the embedded magnetic scale is 5°.

[0057] An adjustable magnetic base is added to the bottom of the fixed collar 1, which not only makes it easy to firmly attach the wrench to the metal workbench, improving the stability and convenience of operation, but also cleverly sets a magnetic groove in the middle of the handle 3 to embed a magnetic scale with a scale accuracy of 5°. This detail provides users with an intuitive angle reference during operation, ensuring the accuracy and controllability of the rotation of the pawl 2.

[0058] In some embodiments, the axial positioning structure of the fixed collar 1 includes two sets of symmetrically distributed spring steel claws; one end of the spring steel claw is fixedly connected to the inner wall of the fixed collar 1, and the other end of the spring steel claw is provided with a hook, which engages in the groove of the drill chuck 100.

[0059] Stable positioning is achieved through two sets of symmetrically distributed spring steel claws. One end of the spring steel claw is fixed to the inner wall of the fixing collar 1, while the other end of the claw is firmly engaged in the groove of the drill chuck 100. This not only ensures a tight connection and accurate positioning between the fixing collar 1 and the drill chuck 100, effectively preventing shaking or falling off during loading and unloading, but also the elastic design of the spring steel claws makes the engagement process smoother and easier to operate, improving the working efficiency and stability of the drill chuck loading and unloading quick wrench.

[0060] As can be seen from the above technical solutions, this application provides a quick-release wrench for both loading and unloading drill chucks, including: a fixing collar 1, a pawl 2, a handle 3, and a fixing pin 4; the fixing collar 1 is fitted onto the outside of the drill chuck 100 and fixed by an axial positioning structure; the outer wall of the fixing collar 1 has a through groove 11, and the pawl 2 is pivotally connected to the through groove 11 by the fixing pin 4, so as to rotate along the axial force direction of the outer sleeve of the drill chuck 100; the head of the pawl 2 has an outer sleeve engaging part, which engages with the outer sleeve groove of the drill chuck 100; the tail of the pawl 2 has a handle 3 connecting end, which is fixedly connected to one end of the handle 3. By turning the handle 3 axially, the drill chuck 100 can be loaded and unloaded to replace the drill bit, thus solving the problem of drill chuck failure caused by improper loading and unloading.

[0061] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A quick-release wrench for both loading and unloading drill chucks, characterized in that, The utility model relates to a drill chuck fixing device, including: Fixed collar (1), pawl (2), handle (3) and fixed pin (4); The fixed collar (1) is sleeved outside the drill chuck (100) and is fixed through axial positioning structure; The outer wall of the fixed collar (1) is provided with a through groove (11), the pawl (2) is pivoted with the through groove (11) through the fixed pin (4), to rotate along the axial force direction of the drill chuck (100) outer sleeve; The head of the pawl (2) is provided with an outer sleeve clamping part, and the outer sleeve clamping part is clamped with the drill chuck (100) outer sleeve clamping groove; the tail of the pawl (2) is provided with a handle connecting end, and the handle connecting end is fixedly connected with one end of the handle (3).

2. The quick wrench for chuck key and chuck according to claim 1, wherein: The rotation angle range of the pawl (2) and the fixed pin (4) is 0-210 degrees.

3. The quick wrench for chuck key and chuck according to claim 1, wherein: The outer sleeve clamping part is a crescent structure; The inner side of the outer sleeve clamping part is provided with a lip-shaped sealing ring, and the lip-shaped sealing ring is located between the outer sleeve clamping part and the drill chuck (100) outer sleeve clamping groove.

4. The quick wrench for chuck key and chuck according to claim 1, wherein: The through groove (11) of the fixed collar (1) is a long strip-shaped slot hole extending along the circumferential direction, the length direction of the through groove (11) is parallel to the axial direction of the drill chuck (100) outer sleeve, and the width of the through groove (11) is matched with the thickness gap of the pawl (2).

5. The quick wrench for chuck key and collet according to claim 1, wherein: A reinforcing rib plate is arranged between the outer sleeve clamping part and the handle connecting end, and the extension direction of the reinforcing rib plate is perpendicular to the rotation plane of the pawl (2).

6. The quick wrench for chuck key and chuck according to claim 1, wherein: The surface of the handle (3) is provided with an anti-skid pattern, and the connection part of the handle (3) and the pawl (2) is provided with a limiting protrusion for limiting the maximum rotation angle of the pawl (2).

7. The quick wrench for chuck key according to claim 1, wherein The handle (3) is a hollow tubular structure, and the outer sleeve clamping part is fixedly connected with one end of the handle (3) through buckling.

8. The quick wrench for chuck key according to claim 1, wherein An elastic buffer layer is arranged between the contact surface of the fixed collar (1) and the pawl (2), and the thickness of the elastic buffer layer is 2-5 mm.

9. The quick wrench for chuck key according to claim 1, wherein The bottom of the fixed collar (1) is provided with an adjustable magnetic base; the middle part of the handle (3) is provided with a magnetic embedding groove, a magnetic scale is embedded in the magnetic embedding groove, and the embedded magnetic scale has a scale accuracy of 5 degrees.

10. The quick wrench for chuck key according to claim 1, wherein The axial positioning structure of the fixed collar (1) includes two groups of symmetrically distributed spring steel clamping jaws; One end of the spring steel clamping jaw is fixedly connected with the inner wall of the fixed collar (1), and the other end of the spring steel clamping jaw is provided with a clamping hook, and the clamping hook is clamped in the groove of the drill chuck (100).

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