Quick chuck

Abstract

The invention provides a quick chuck, which relates to the technical field of machining and comprises a mounting seat and an expansion sleeve slidably mounted in the mounting seat, an expansion sleeve mounting hole is formed in the mounting seat, the expansion sleeve is mounted in the expansion sleeve mounting hole, a first horn mouth with an upward opening is formed in the inner wall of the expansion sleeve mounting hole, and the outer wall of the expansion sleeve is a conical surface. The molded surface of the horn mouth I is matched with the conical surface molded surface of the outer wall of the expansion sleeve; the molded surface of the inner wall of the expansion sleeve is a horn mouth II with an upward opening; an elastic driving part is mounted on the mounting seat, is connected with the bottom end of the expansion sleeve, and drives the expansion sleeve to move towards the bottom surface of the expansion sleeve. Only one up-and-down linear motion piece is needed to abut against or loosen the lower end of the lever, and then disassembly and clamping of the workpiece can be achieved. And application in an automatic production line is facilitated, and the construction and maintenance cost of an execution mechanism of the automatic production line is reduced. In addition, due to the fact that the clamping structure is simple in driving action for achieving clamping, the clamping efficiency is greatly improved, and the production line rhythm is improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and more specifically to a quick-release chuck. Background Technology

[0002] Some commonly used parts have a cylindrical embedded part and a functional part connected to the embedded part, such as various artificial joints and bone screws commonly found in medical devices. The processing of these parts usually includes the following steps: casting a rough mold block; clamping the cylindrical embedded part with a clamping device to machine the functional part.

[0003] Existing clamping mechanisms are typically jaw-type clamping mechanisms, such as three-jaw chucks. The problem with this type of clamping mechanism is that, due to the limitation of the jaw clamping end size, there is a gap in the clamping center, making it unable to securely clamp small-diameter workpieces. Therefore, some clamping mechanisms use expansion sleeves to clamp the workpiece. The outer wall of the expansion sleeve is conical, and the inner wall is cylindrical, such as the clamping mechanism for mounting drill bits on a hand drill. The expansion sleeve is tightened by pressing the nut downwards into the mounting base, thereby clamping the workpiece.

[0004] However, in actual production, to facilitate demolding, the cylindrical embedded part is usually a tapered surface with a slight inclination. This results in the expansion sleeve not being able to fully clamp the workpiece. When the expansion sleeve is clamped, the inner wall of the expansion sleeve and the workpiece are always in line contact, which cannot provide sufficient clamping force. This can easily lead to large machining errors or even scrapped parts during subsequent machining. In addition, the clamping method of this clamping structure requires a complex and multi-action drive mechanism for rotating and pressing down or lifting the nut, which is not conducive to automated production and has low clamping efficiency. During the rotation and pressing down of the nut, the clamping force generates huge friction between it and the top end face of the expansion sleeve. The rotation of the nut can easily wear down the expansion sleeve, or cause the clamping angle of the workpiece clamped in the expansion sleeve to deflect due to the rotation of the expansion sleeve. Summary of the Invention

[0005] The purpose of this invention is to provide a quick clamp that facilitates the rapid and stable automated clamping of cylindrical workpieces.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A quick-release chuck includes a mounting base and an expansion sleeve slidably mounted in the mounting base. The mounting base has an expansion sleeve mounting hole, and the expansion sleeve is installed in the expansion sleeve mounting hole. The inner wall of the expansion sleeve mounting hole has an upward-opening flared opening (first type), and the outer wall of the expansion sleeve is conical. The profile of the first flared opening matches the conical profile of the outer wall of the expansion sleeve. The inner wall profile of the expansion sleeve is an upward-opening flared opening (second type). A spring-loaded drive component is installed on the mounting base. The spring-loaded drive component is connected to the bottom end of the expansion sleeve, and the spring-loaded drive component drives the expansion sleeve to move towards the bottom surface of the expansion sleeve.

[0007] Furthermore: the mounting base has a cavity, the expansion sleeve mounting hole communicates with the cavity, and the elastic drive component is installed in the cavity; the cavity also communicates with the lower surface of the mounting base, and the elastic drive component is exposed on the lower surface of the mounting base.

[0008] Furthermore: the elastic drive component includes a spring and a lever, and a connecting block is fixed to the bottom end of the expansion sleeve; the lever is mounted on the mounting base through a rotating pin, and one end of the lever is slidably connected to the connecting block; one end of the spring abuts against the mounting base, and the other end acts on the lever at a position different from the rotating pin, and the spring force of the spring drives the connecting block to move downward through the lever.

[0009] Furthermore, the lever is C-shaped, with the rotating pin located on the upper half of the C-shaped lever. A spring force drives the upper end of the lever to press against the upper surface of the connecting block. This lever shape results in a compact structure, high transmission efficiency, and facilitates the miniaturization of the entire device, making it convenient for placement in automated production lines.

[0010] Furthermore: the connecting block is a horizontally placed fixed shaft, which is perpendicular to the lever. The end of the lever that contacts the fixed shaft is a fork, and the fixed shaft is slidably connected in the opening of the fork.

[0011] Furthermore: the connecting block is a stepped block with the stepped surface facing upwards, and the end of the lever that contacts the protrusion is a cam block, which presses against the stepped surface.

[0012] Furthermore: the elastic drive component includes a movable base that is slidably mounted in the mounting base via two vertical sliding rods. A spring is sleeved on the sliding rod, with one end of the spring abutting against the inner wall of the mounting base and the other end abutting against the upper surface of the movable base. A connecting groove is opened on the movable base, and the bottom end of the expansion sleeve is fixedly connected in the connecting groove.

[0013] Furthermore: the inner wall surface of the expansion sleeve is provided with an anti-slip layer, the anti-slip layer being an electroplated diamond layer, and the opening angle of the second flared mouth is ≥1°.

[0014] Furthermore, the mounting base is also equipped with a positioning block, and the flared end is located in the positioning block. The expansion sleeve is installed in the mounting base through the positioning block. The positioning block is easy to replace. When the expansion sleeve moves up and down, it is easy to cause impact to the mounting base, making the part of the mounting base that contacts the expansion sleeve more prone to wear and deformation. The replaceable positioning block reduces the time and cost of maintenance of the mounting base.

[0015] Compared with the original technology, the present invention has the following beneficial effects: First, the clamping structure of this invention requires a simple driving mechanism for clamping and disassembling: only one vertical linear motion component is needed to hold or release the lever to achieve workpiece disassembly and clamping respectively. This is beneficial for application in automated production lines, reducing the setup and maintenance costs of automated production line actuators. Furthermore, because the clamping structure of this invention has a simple driving action for clamping, it greatly improves clamping efficiency and increases production line cycle time.

[0016] 2. Stable clamping: The inner wall of the expansion sleeve in this invention has a flared shape, which can better adapt to the conical demolding surface of the cylindrical workpiece embedded part in the actual production process. This makes the clamping area the entire inner wall of the expansion sleeve, greatly increasing the actual clamping area, providing sufficient clamping force, and improving the stability of clamping.

[0017] 3. Reduce wear and extend equipment life: The mounting base has a cavity, and the elastic drive component is located inside the mounting base. The machining debris will not fall into the moving parts of this device, preventing debris from entering the gaps between the parts and causing friction damage to the parts.

[0018] Fourth, the elastic drive component of this invention is located inside the mounting base, with a clean and flat outer surface. Machining debris will not fall into the moving parts of this device, facilitating post-processing debris removal. It only requires a simple air gun to blow away the debris, making it convenient for the arrangement of cleaning processes in automated production lines. Furthermore, the blowing time is short, improving cleaning efficiency and increasing production line cycle time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an isometric view of Example 1; Figure 2 This is a half-sectional schematic diagram of Example 1; Figure 3 This is a side view diagram of the appearance of Example 2; Figure 4 for Figure 3 A schematic cross-sectional view along the AA direction; Figure 5 This is a schematic diagram of the installation structure after concealing the mounting base in Example 2; Figure 6 This is a schematic half-sectional view of Example 3; Figure 7 This is a schematic half-sectional view of Example 4; Figure 8 This is a schematic half-sectional view of Example 5; Figure 9 This is a schematic half-sectional view of Example 6; Figure 10 This is a schematic half-sectional view of Example 7. Figure 11 This is a schematic half-sectional view of Example 8; Figure 12 This is a schematic half-sectional view of Example 9; In the picture: 1. Mounting base; 1.1. Positioning block; 1.2. Rotating pin; 2. Expansion sleeve; 2.1. Fixed shaft; 2.2. Step block; 3. Workpiece; 4. Straight lever; 4.1. Fork head; 5. Spring; 5.1. Guide rod; 6. "C" type lever; 6.1. Cam block; 7. Fork lever; 7.1. Tail end of fork lever; 7.2. Head end of fork lever; 8. Movable base; 8.1. Sliding rod; 8.2. Connecting groove; 9. Top rod. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Example 1: like Figure 1-2 As shown: A quick-release chuck includes a mounting base 1 and an expansion sleeve 2 slidably mounted within the mounting base 1. The mounting base 1 has an expansion sleeve mounting hole inside, and the expansion sleeve 2 is installed in the expansion sleeve mounting hole. The inner wall of the expansion sleeve mounting hole has an upward-opening flared opening (first type), and the outer wall of the expansion sleeve 2 is conical. The profile of the flared opening (first type) matches the conical profile of the outer wall of the expansion sleeve. The inner wall profile of the expansion sleeve 2 is an upward-opening flared opening (second type), and the opening angle of the flared opening (second type) is greater than or equal to 1°. In this embodiment, 3.6° is selected. The inner wall profile of the expansion sleeve 2 is provided with an anti-slip layer, which is an electroplated diamond abrasive layer. A spring-loaded drive component is mounted on the mounting base 1. The spring-loaded drive component is connected to the bottom end of the expansion sleeve 2, and the spring-loaded drive component drives the expansion sleeve 2 to move towards the bottom surface of the expansion sleeve 2.

[0023] The elastic drive component includes a spring 5 and a flat lever 4. The flat lever 4 is mounted on the mounting base 1 via a rotating pin 1.2. The rotating pin 1.2 is located on the side of the flat lever 4 near the connecting block. A horizontally placed fixed shaft 2.1 is fixed to the bottom end of the expansion sleeve 2. The fixed shaft 2.1 is perpendicular to the flat lever 4. The end of the flat lever 4 that contacts the fixed shaft 2.1 is a fork 4.1. The fixed shaft 2.1 is slidably connected in the opening of the fork 4.1. The spring 5 is located below the end of the flat lever 4 away from the fixed shaft 2.1. The spring force of the spring 5 causes the fork 4.1 end of the flat lever 4 to drive the fixed shaft 2.1 downward, thereby driving the expansion sleeve 2 to move downward.

[0024] The end of the straight lever 4 that contacts the spring 5 is provided with a guide rod 5.1, and the spring 5 is sleeved on the guide rod 5.1.

[0025] The working principle of this embodiment is as follows: The actuator and action required for loading and unloading workpiece 3 in this invention are very simple: a single vertical linear motion component can press down or release one end of a straight lever 4 on which a spring 5 is installed, thereby realizing the disassembly or clamping of workpiece 3 respectively.

[0026] Specifically, when one end of the straight lever 4 with the spring 5 is pressed down, one end of the fork 4.1 on the straight lever 4 rises, which in turn causes the expansion sleeve 2 to rise. During this process, the pressure on the inclined surface of the flared opening on the outer wall of the expansion sleeve 2 is eliminated, and the flared opening of the expansion sleeve 2 opens, at which point the workpiece 3 can be inserted or removed.

[0027] Conversely, when the downward pressure applied by the external pressure device to one end of the mounting spring 5 is removed, the tension of the spring 5 causes the end of the straight lever 4 with the mounting spring 5 to be lifted, and the fork 4.1 end of the straight lever 4 to be pressed down, thereby driving the expansion sleeve 2 to be pressed down. During this process, the outer wall of the expansion sleeve 2 contracts under the pressure of the inclined surface of the flared opening, thereby clamping the workpiece 3.

[0028] The clamping structure of this embodiment requires a simple driving mechanism for clamping and disassembling: only one vertical linear motion component needs to press against or release one end of the flat lever 4 connected to the spring 5 to achieve the disassembly and clamping of the workpiece 3, which is beneficial for application in automated production lines and reduces the construction and maintenance costs of automated production line actuators. In addition, because the clamping structure of this invention has a simple driving action for clamping, it greatly improves clamping efficiency and increases the production line cycle time.

[0029] The inner wall of the expansion sleeve 2 has a flared shape, which can better adapt to the conical demolding surface of the cylindrical workpiece 3 embedded part in the actual production process, so that the clamping area is the entire inner wall of the expansion sleeve 2, which greatly increases the actual clamping area and improves the clamping stability.

[0030] Example 2: like Figure 3-5 As shown: A quick clamp includes a mounting base 1 and an expansion sleeve 2 slidably mounted in the mounting base 1. The mounting base 1 has an expansion sleeve mounting hole and a cavity inside, and the expansion sleeve mounting hole communicates with the cavity. The expansion sleeve 2 is installed in the expansion sleeve mounting hole. The inner wall of the expansion sleeve mounting hole is provided with an upward-facing flared opening. The outer wall of the expansion sleeve 2 is conical. The shape of the flared opening matches the conical shape of the outer wall of the expansion sleeve. An elastic drive component is provided inside the cavity. The elastic drive component is connected to the bottom end of the expansion sleeve 2 and drives the expansion sleeve 2 to move towards the bottom surface of the expansion sleeve 2. The elastic drive component includes a spring 5 and a lever. A connecting block is fixed to the bottom end of the expansion sleeve 2 and is threadedly installed on the bottom end of the expansion sleeve 2. The connecting block is a stepped block 2.2 with the stepped surface of the stepped block 2.2 facing upwards. The end of the lever that contacts the stepped block 2.2 is a cam block 6.1, which presses against the stepped surface.

[0031] The lever is mounted in the mounting base 1 via a rotating pin 1.2. The lever is C-shaped, with the rotating pin 1.2 located on the upper half of the C-shaped lever 6. The upper end of the C-shaped lever 6 presses against the stepped surface of the step block 2.2. The cavity in the mounting base penetrates the lower surface of the mounting base 1, exposing the lower half of the C-shaped lever 6 to the lower surface of the mounting base 1. One end of the spring 5 rests against the mounting base 1, while the other end acts on the C-shaped lever 6 at a position different from the rotating pin 1.2. The spring force of the spring 5 drives the step block 2.2 downward by rotating the C-shaped lever around the rotating pin 1.2.

[0032] The inner wall of the expansion sleeve 2 is shaped like an upward-facing flared opening, with an opening angle ≥1°, and 3.6° is selected in this embodiment. The spring 5 is pressed downward against the upper end of the "C"-shaped lever 6. The inner wall of the expansion sleeve 2 is provided with an anti-slip layer, which is an electroplated diamond abrasive layer.

[0033] Mounting base 1 is also equipped with positioning block 1.1, with flared opening 1 located in positioning block 1.1, and expansion sleeve 2 installed in mounting base 1 through positioning block 1.1.

[0034] The working principle of this embodiment is as follows: The actuator and actions required for loading and unloading workpiece 3 in this invention are very simple: a single vertical linear motion component can push up or release the lower end face of the "C"-shaped lever 6 to respectively realize the disassembly and clamping of workpiece 3.

[0035] Specifically, when the lower end of the "C"-shaped lever 6 is pushed upward, the "C"-shaped lever 6 rotates around the rotating pin 1.2, and the upper end of the "C"-shaped lever 6 moves obliquely upward, moving the limiting position of the step block 2.2 upward; the expansion sleeve 2 in the flared opening of the positioning block 1.1 tends to expand. At this time, under the action of the expansion force, the expansion sleeve 2 moves upward along the flared opening of the positioning block 1.1 and expands its inner diameter; thus, the workpiece 3 can be easily removed from the expansion sleeve 2 and the next workpiece 3 to be clamped can be placed in.

[0036] When the upward force at the lower end of the "C"-shaped lever 6 is removed, the lower end of the "C"-shaped lever 6 is pressed downward under the action of the spring 5. Conversely, the upper end of the "C"-shaped lever 6 presses down on the step block 2.2, thereby pulling the expansion sleeve 2 downward. During the downward movement of the expansion sleeve 2 in the flared opening of the positioning block 1.1, under the decomposed force of the inclined plane, the expansion sleeve 2 contracts and clamps the workpiece 3.

[0037] Furthermore, in this embodiment, the opening angle of the second flared opening on the inner wall of the expansion sleeve 2 is 3.6°, which can better adapt to the profile of the cylindrical workpiece 3 embedded in the actual production process, making the clamping area the entire inner wall of the expansion sleeve 2, greatly increasing the actual clamping area and improving the clamping stability. At the same time, the electroplated diamond abrasive layer on the inner wall of the expansion sleeve 2 in this embodiment further increases the friction between the inner wall of the expansion sleeve 2 and the clamped workpiece 3, further stabilizing the clamping.

[0038] The present embodiment has the following more prominent advantages: the "C" type lever 6 has a compact structure and high transmission efficiency, which is conducive to the miniaturization of the entire device and facilitates the arrangement of the device in automated production lines. The locating block 1.1 is easy to replace. When the expansion sleeve 2 moves up and down, it can easily impact the mounting base 1, making the part of the mounting base 1 that contacts the expansion sleeve 2 more prone to wear and deformation. The replaceable locating block 1.1 reduces the time and cost of maintenance for the mounting base 1. The mounting base 1 has an internal cavity, and the elastic drive component is located inside the mounting base 1. The machining debris will not fall into the moving parts of this device, preventing debris from entering the gaps between the parts and causing friction damage to the parts. Furthermore, since the elastic drive component in this embodiment is located inside the mounting base 1 and has a clean and flat outer surface, machining debris will not fall into the moving parts of this device, making it convenient to clean up debris after machining. It only requires a simple air gun to blow it away, which is beneficial for use in automated production lines. Moreover, the blowing time is short, improving cleaning efficiency and increasing production line cycle time.

[0039] This embodiment is no different from Embodiment 1 in the rest, and will not be repeated here.

[0040] Example 3: like Figure 6As shown, the difference between this embodiment and embodiment 2 lies in the structure of the lever. In this embodiment, the lever is fork-shaped, the spring 5 is located at the tail end 7.1 of the fork-shaped lever, the cam block 6.1 is located at the head end 7.2 of the fork-shaped lever, the rotating pin 1.2 is located in the middle of the fork-shaped lever 7, and the head end 7.1 of the fork-shaped lever also has a fork extending to the bottom of the mounting base 1 for contacting the upper and lower linear motion components.

[0041] The difference between the working principle of this embodiment and that of embodiment 2 is that in this embodiment, the vertical linear motion component driving the head end 7.1 of the fork lever cooperates with the spring 5 located at the tail end 7.2 of the fork lever to realize the alternating rotation of the fork lever 7, thereby realizing the contraction and opening of the expansion sleeve 2.

[0042] This embodiment is no different from Embodiment 2 in all other respects, and will not be described again.

[0043] Example 4: like Figure 7 As shown, this embodiment is another variation of Example 2 at the position of spring 5. The rest of the aspects are no different from those of Example 2, and will not be described again.

[0044] Example 5: like Figure 8 As shown, this embodiment is another variation of Example 2 at the position of spring 5. The rest of the aspects are no different from those of Example 2, and will not be described again.

[0045] Example 6: like Figure 9 As shown, this embodiment is another variation of Example 2 at the position of spring 5. The rest of the aspects are no different from those of Example 2, and will not be described again.

[0046] Example 7: like Figure 10 As shown, another variation of this embodiment 2 at the position of spring 5 differs from embodiment 2 in that: a guide rod 5.1 is provided at the end of the "C"-shaped lever 6 that contacts the spring 5, and the spring 5 is sleeved on the guide rod 5.1. A limiting block 5.2 is provided at the connection between the guide rod 5.1 and the "C"-shaped lever 6. The limiting block 5.2 is frustum-shaped, and the maximum diameter of the limiting block 5.2 is the same as the inner diameter of the spring 5. The diameter of the guide rod 5.1 is smaller than the inner diameter of the spring 5.

[0047] The remaining aspects are no different from those in Example 2, and will not be repeated here.

[0048] Example 8: like Figure 11As shown, a quick-release chuck includes a mounting base 1 and an expansion sleeve 2 slidably mounted within the mounting base 1. The mounting base 1 has an expansion sleeve mounting hole, and the expansion sleeve 2 is installed in the expansion sleeve mounting hole. The inner wall of the expansion sleeve mounting hole has an upward-opening flared opening (first type), and the outer wall of the expansion sleeve 2 is conical. The profile of the first flared opening matches the conical profile of the outer wall of the expansion sleeve 2. The inner wall profile of the expansion sleeve 2 is an upward-opening flared opening (second type). An elastic drive component is installed on the mounting base 1. The elastic drive component is connected to the bottom end of the expansion sleeve 2. The elastic drive component drives the expansion sleeve 2 to move towards the bottom surface of the expansion sleeve.

[0049] The mounting base 1 has a cavity, and the expansion sleeve mounting hole communicates with the cavity. The elastic drive component is installed in the cavity. The cavity also communicates with the lower surface of the mounting base 1, and the elastic drive component is exposed on the lower surface of the mounting base 1.

[0050] The elastic drive component includes a movable base 8 that is slidably mounted in the mounting base 1 via two vertical sliding rods 8.1. The two sliding rods 8.1 are symmetrically arranged on both sides of the expansion sleeve 2. A spring 5 is sleeved on the sliding rod 8.1, with one end of the spring 5 abutting against the inner wall of the mounting base 1 and the other end abutting against the upper surface of the movable base 8. A connecting groove 8.2 is opened on the movable base 8, and a connecting block is fixedly connected to the bottom end of the expansion sleeve 2. The connecting block is fixedly installed in the connecting groove 8.2.

[0051] The inner wall surface of the expansion sleeve 2 is provided with an anti-slip layer, which is an electroplated diamond layer. The opening angle of the second flared mouth is 1°-4°, preferably 3.6° in this embodiment. The mounting base is also equipped with a positioning block, and the first flared mouth is located in the positioning block. The expansion sleeve is installed in the mounting base through the positioning block.

[0052] The working principle of this embodiment is as follows: The difference between the working principle of this embodiment and that of embodiment 2 is that the linear motion component pushes the movable base 8 upward, which can directly drive the expansion sleeve 2 to rise, thereby opening the expansion sleeve 2; when the linear motion component removes the upward force, the movable base 8 is pressed down under the action of the spring 5, thereby driving the expansion sleeve 2 to fall, thereby shrinking the expansion sleeve 2.

[0053] Example 9: like Figure 12 As shown: The difference between this embodiment and embodiment 2 is that the chuck structure in this embodiment is an expansion type chuck, including an expansion sleeve 2 and a push rod 9 installed in the expansion sleeve. The outer surface of the push rod 9 fits the inner surface of the expansion sleeve 2.

[0054] The mounting base 1 is provided with an expansion sleeve mounting hole, and the expansion sleeve 2 is installed in the expansion sleeve mounting hole. The lower end of the push rod 9 is connected to the lower end of the "C"-shaped lever 6.

[0055] The difference between the working principle of this embodiment and that of embodiment 2 is that in this embodiment, the expansion sleeve 2 expands and tightens the inner wall of the concave workpiece to achieve workpiece clamping.

[0056] Specifically, when no external force is applied to the bottom end of the "C"-shaped lever 6, the bottom end of the "C"-shaped lever 3 rotates downward under the force of the spring 5, pulling the push rod 9 downward. During the downward movement of the push rod 9, the conical outer wall that fits with the inner wall of the expansion sleeve 2 will squeeze the expansion sleeve 2, causing the expansion sleeve 2 to expand outward, thereby tightening the inner wall of the concave workpiece and clamping the workpiece.

[0057] Conversely, when an upward force is applied to the bottom end of the "C"-shaped lever 6, the bottom end of the "C"-shaped lever 6 rotates upward, the push rod 9 returns to its original position, and the expansion sleeve 2 also contracts and returns to its original position, thus disassembling the workpiece. At the same time, the spring 5 is compressed, accumulating elastic potential energy for the next clamping of the workpiece.

[0058] This embodiment is no different from Embodiment 2 in other respects, and will not be described again.

[0059] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A quick-release chuck, comprising a mounting base and an expansion sleeve slidably mounted within the mounting base, characterized in that: The mounting base is provided with an expansion sleeve mounting hole, and the expansion sleeve is installed in the expansion sleeve mounting hole. The inner wall of the expansion sleeve mounting hole is provided with an upward-opening flared opening, and the outer wall of the expansion sleeve is conical. The shape of the flared opening first matches the conical shape of the outer wall of the expansion sleeve; the inner wall shape of the expansion sleeve is an upward-opening flared opening second. A spring-loaded drive component is installed on the mounting base. The spring-loaded drive component is connected to the bottom end of the expansion sleeve, and the spring-loaded drive component drives the expansion sleeve to move towards the bottom surface of the expansion sleeve.

2. A quick-release chuck according to claim 1, characterized in that: The mounting base has a cavity, and the expansion sleeve mounting hole communicates with the cavity. The elastic drive component is installed in the cavity. The cavity also extends through the lower surface of the mounting base, and the elastic drive component is exposed on the lower surface of the mounting base.

3. A quick-release chuck according to claim 1, characterized in that: The elastic drive component includes a spring and a lever, with a connecting block fixed to the bottom of the expansion sleeve; the lever is mounted on the mounting base via a rotating pin, and one end of the lever is slidably connected to the connecting block; one end of the spring rests against the mounting base, and the other end acts on the lever at a position different from the rotating pin, and the spring force drives the connecting block to move downward through the lever.

4. A quick-release chuck according to claim 3, characterized in that: The lever is C-shaped, with the rotating pin located on the upper half of the C-shaped lever. The spring force drives the upper end of the lever to press against the upper surface of the connecting block.

5. A quick-release chuck according to claim 3, characterized in that: The connecting block is a horizontally placed fixed shaft, which is perpendicular to the lever. The end of the lever that contacts the fixed shaft is a fork, and the fixed shaft is slidably connected in the opening of the fork.

6. A quick-release chuck according to claim 3, characterized in that: The connecting block is a stepped block with the stepped surface facing upwards. The end of the lever that contacts the protrusion is a cam block, which presses against the stepped surface.

7. A quick-release chuck according to claim 2, characterized in that: The elastic drive component includes a movable base that is slidably mounted in the mounting base via two vertical sliding rods. A spring is sleeved on the sliding rod, with one end of the spring abutting against the inner wall of the mounting base and the other end abutting against the upper surface of the movable base. A connecting groove is opened on the movable base, and the bottom end of the expansion sleeve is fixedly connected in the connecting groove.

8. A quick-release chuck according to claim 1, characterized in that: The inner wall surface of the expansion sleeve is provided with an anti-slip layer, which is an electroplated diamond layer, and the opening angle of the second flared mouth is ≥1°.

9. A quick-release chuck according to claim 1, characterized in that: The mounting base is also equipped with a positioning block, and the flared opening is located in the positioning block. The expansion sleeve is installed in the mounting base through the positioning block.

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