A quick chuck

Abstract

The present application relates to the technical field of clamps, and specifically discloses a quick chuck, which comprises a first clamping piece, a second clamping piece and an elastic constraint piece; the first clamping piece is detachably connected with the second clamping piece; the upper part of the first clamping piece is rotationally connected with the upper part of the second clamping piece, so that the lower part of the first clamping piece is close to or away from the lower part of the second clamping piece; the first clamping piece and the second clamping piece enclose a clamping cavity for mounting a workpiece; and the elastic constraint piece is used for making the first clamping piece and the second clamping piece close to each other to clamp the workpiece; the above structure can effectively clamp small regular bodies of different shapes, and facilitates the machining and welding of the fixed workpiece; moreover, the mounting and dismounting of the workpiece are fast, which is beneficial to improving production efficiency; compared with the existing clamps, the chuck can effectively clamp different workpieces without the need of replacing clamping blocks of different shapes for multiple times, thereby greatly saving production cost.

Description

Technical Field

[0001] This invention relates to the technical field of clamps, and particularly to a quick-release chuck. Background Technology

[0002] Fixtures are generally used to fix objects to be processed, i.e., workpieces, to facilitate machining, such as welding. Traditional fixtures typically include a stationary clamping block, a movable clamping block, and an adjusting handwheel. The workpiece is placed between the stationary and movable clamping blocks. By rotating the adjusting handwheel, the movable clamping block moves towards the stationary clamping block to clamp the workpiece. Then, locking the adjusting handwheel fixes the workpiece in place, allowing for subsequent machining and welding. However, these fixtures are generally quite large, resulting in poor clamping effectiveness for smaller, regular-shaped objects. Furthermore, the time required to rotate the adjusting handwheel to fix the workpiece prevents rapid clamping. Moreover, since different workpiece shapes have different contact surfaces with the clamping blocks, clamping blocks need to be replaced to improve the clamping effect, leading to frequent and time-consuming clamping block replacements.

[0003] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a quick clamp, which aims to solve the problem that the existing clamps have poor clamping effect on small regular objects and cannot achieve quick clamping.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-release chuck includes a first clamping member, a second clamping member, and an elastic constraint member; the first clamping member and the second clamping member are detachably connected, the upper part of the first clamping member is rotatably connected to the upper part of the second clamping member, such that the lower part of the first clamping member approaches or moves away from the lower part of the second clamping member, the first clamping member and the second clamping member form a clamping cavity for mounting a workpiece, and the elastic constraint member is used to bring the first clamping member and the second clamping member closer to each other to clamp the workpiece.

[0007] The quick clamp, wherein the first clamping member is a first arc-shaped shell, the second clamping member is a second arc-shaped shell, the first arc-shaped shell and the second arc-shaped shell are combined to form a cylindrical body, the upper part of the first arc-shaped shell is provided with an adapter ear, and the second arc-shaped shell is provided with a notch adapted to the adapter ear.

[0008] The quick-release chuck, wherein the clamping cavity is a through hole, and limiting angle grooves are provided on the inner walls of the first arc-shaped shell and the second arc-shaped shell, the number of limiting angle grooves being N, where N is an integer greater than or equal to 3.

[0009] The quick-release chuck, wherein the upper end face of the second clamping member is further connected to a connector, and the connector is integrally formed with the second clamping member; the connector has a threaded hole communicating with the clamping cavity, a positioning pin is installed at the threaded hole of the connector, the head of the positioning pin has an external thread adapted to the threaded hole, the pin body is disposed in the clamping cavity, and the end face of the positioning pin away from the connector is used for axial positioning of the workpiece.

[0010] The quick-release chuck, wherein the head of the positioning post is provided with an adjustment groove.

[0011] The quick-release chuck, wherein the lower end face of the connector forms an angle with the upper end face of the first clamping member.

[0012] The quick-release chuck further includes a connecting core and a connecting rod. The outer peripheral wall of the connecting core is provided with external threads, and the connecting rod is hollow with internal threads in its inner cavity. The upper part of the connecting core is threadedly connected to the lower part of the connecting rod, and the lower part of the connecting core is threadedly connected to the upper part of the connecting head.

[0013] The quick-release chuck further includes a connecting core and a connecting rod. A first slot is formed on the outer peripheral wall of the first clamping member, and a second slot corresponding to the first slot is formed on the outer peripheral wall of the second clamping member. The first slot and the second slot form an annular slot, and the elastic constraint member is fitted in the annular slot.

[0014] The quick-release chuck is provided in which the number of first slots is one or more, the number of second slots is the same as the number of first slots, and each first slot corresponds to one second slot. Each annular slot is provided with one elastic constraint member.

[0015] The quick-release chuck, wherein the elastic constraint element is an elastic threaded ring.

[0016] Beneficial effects:

[0017] This invention provides a quick-release chuck. By configuring a first clamping member and a second clamping member, a clamping cavity is formed between the two members, which is used to hold a workpiece. The upper parts of the first and second clamping members are rotatably connected, allowing the clamping cavity to expand or shrink according to the shape of the workpiece. An elastic constraint member is provided, allowing the first and second clamping members to clamp the workpiece when they are close together. This structure can effectively clamp small, regular-shaped objects of different shapes, facilitating the processing and welding of the fixed workpiece. Furthermore, the quick installation and removal of the workpiece improves production efficiency. Compared with existing fixtures, this chuck can effectively clamp different workpieces without requiring multiple replacements of clamping blocks of different shapes, significantly reducing production costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the quick-release chuck provided by the present invention.

[0019] Figure 2 This is an exploded view of the rapid head clamp.

[0020] Figure 3 This is a partial structural diagram of the quick-release chuck after clamping a cuboid.

[0021] Figure 4 This is a schematic diagram of the quick-release chuck after clamping a cylinder.

[0022] Figure 5 This is a schematic diagram of a quick-release chuck without a workpiece being clamped.

[0023] Explanation of main component symbols: 1-First clamping component, 11-Adapter ear, 12-Limiting angle groove, 13-First slot, 2-Second clamping component, 21-Notch, 22-Second slot, 3-Elastic constraint component, 4-Clamping cavity, 5-Connector, 6-Positioning post, 61-Adjusting groove, 7-Angle, 8-Connecting core, 81-Upper connecting part, 82-Lower connecting part, 9-Connecting rod, 10-Annular slot, 100-Workpiece. Detailed Implementation

[0024] This invention provides a quick-release chuck. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the scope of protection of the invention.

[0025] Please see Figure 1-2The present invention provides a quick clamp, including a first clamping member 1, a second clamping member 2, and an elastic constraint member 3; the first clamping member 1 and the second clamping member 2 are detachably connected, and the upper part of the first clamping member 1 is rotatably connected to the upper part of the second clamping member 2, so that the lower part of the first clamping member 1 is close to or away from the lower part of the second clamping member 2, the first clamping member 1 and the second clamping member 2 form a clamping cavity 4 for mounting a workpiece, and the elastic constraint member 3 is used to bring the first clamping member 1 and the second clamping member 2 close to each other to clamp the workpiece 100.

[0026] In practical applications, for regular shapes, such as cylinders (see...), Figure 4 and Figure 5 ), spherical (see Figure 1 ), polygons (see) Figure 3 For small workpieces 100 of various shapes, the lower part of the first clamping member 1 is moved away from the second clamping member 2, increasing the clamping cavity 4. The workpiece 100 is then placed into the clamping cavity 4 formed below the first clamping member 1 and the second clamping member 2. The workpiece 100 is clamped by the elastic constraint member 3. Furthermore, due to the elasticity of the elastic constraint member 3 and the rotatable connection between the upper parts of the first clamping member 1 and the second clamping member 2, for relatively large workpieces 100, the lower part of the first clamping member 1 is moved away from the second clamping member 2, increasing the clamping cavity 4 and providing sufficient space to place the workpiece 100 into the clamping cavity 4. Then, the workpiece 100 is clamped by the elastic constraint member 3. The rebound force of clamp 3 brings the first clamping member 1 and the second clamping member 2 closer together, providing a constraint force. This allows the chuck to effectively clamp small, regular-shaped objects of different shapes. Moreover, the first clamping member 1 and the second clamping member 2 are detachably connected, making the installation and removal of the first clamping member 1 and the workpiece 100 very quick. This rapid installation and removal significantly reduces the time required to fix the workpiece 100, and the clamping effect is excellent, facilitating the processing and welding of the fixed workpiece 100. Furthermore, compared with existing fixtures, the effective clamping of different workpieces 100 by the chuck does not require multiple replacements of clamping blocks of different shapes, greatly saving production costs.

[0027] Please see Figure 1-2 Furthermore, the first clamping member 1 is a first arc-shaped shell, and the second clamping member 2 is a second arc-shaped shell. The first arc-shaped shell and the second arc-shaped shell are combined to form a cylindrical body. The top end of the first clamping member 1 is provided with an adapter ear 11, and the second clamping member 2 is provided with a notch 21 that matches the adapter ear 11. Please refer to [link / reference]. Figure 4 When the lower part of the first clamping member 1 moves away from the second clamping member 2, the adapter ear 11 rotates clockwise or counterclockwise relative to the second clamping member 21; see also Figure 5When the lower part of the first clamping member 1 approaches the second clamping member 2, the adapter ear 11 rotates counterclockwise or clockwise relative to the first clamping member 1 in the recess 21. This arrangement provides a certain positioning function for the first clamping member 1, preventing displacement of the first clamping member 1. The adapter ear 11 is equivalent to a rotating shaft, but the structure of the adapter ear 11 is simpler than that of a rotating shaft, resulting in fewer components and a smaller size for the chuck.

[0028] Please see Figure 2 and Figure 3 Furthermore, the clamping cavity 4 is a through hole, and limiting corner grooves 12 are formed on the inner walls of the lower part of both the first arc-shaped shell and the second arc-shaped shell. The number of limiting corner grooves 12 is N, where N is an integer greater than or equal to 3. Specifically, when the workpiece is a triangular prism, N is 3; when the workpiece is a cube or cuboid, N is 4; when the workpiece is a regular pentagonal prism, N is 5; when the workpiece is a regular hexagonal prism, N is 6, and so on. Please refer to [link / reference]. Figure 3 For polygonal regular-shaped workpieces, the workpiece is inserted into the lower part of the limiting angle groove 12, and then guided by the limiting angle groove 12, the workpiece reaches the corresponding position. This arrangement improves the clamping effect of polygonal workpieces. For cylinders and spheres, since their outer perimeter is arc-shaped, the outer wall of these shaped workpieces can be directly fixed by contacting the inner walls of the first and second arc-shaped shells.

[0029] Please see Figure 2 , Figure 4 and Figure 5Furthermore, the upper end face of the second clamping member 2 is also connected to a connecting head 5, and the connecting head 5 is integrally formed with the second clamping member 2. The connecting head 5 has a threaded hole communicating with the clamping cavity 4. A positioning pin 6 is installed at the threaded hole of the connecting head 5. The head of the positioning pin 6 has an external thread adapted to the threaded hole. The body of the positioning pin 6 is disposed in the clamping cavity 4. The end face of the positioning pin 6 away from the connecting head 5 is used for axial positioning of the workpiece. In actual use, by adjusting the screwing distance between the external thread of the positioning pin 6 and the threaded hole of the connecting head 5, the length of the body of the positioning pin 6 in the clamping cavity 4 is adjusted, so that the distance between the end face of the positioning pin 6 away from the connecting head 5 and the lower end of the first clamping member 1 and the second clamping member 2 is different, thereby positioning workpieces of different heights. The adjustment process is as follows: the positioning pin 6 is inserted into the threaded hole of the connector 5 from above. By rotating the positioning pin 6, the external thread of the head of the positioning pin 6 is threaded into the threaded hole. When positioning a workpiece with a shorter height, the portion of the positioning pin 6 screwed into the clamping cavity 4 is lengthened; when positioning a workpiece with a longer height, the portion of the positioning pin 6 screwed into the clamping space is shortened. The threaded connection between the positioning pin 6 and the connector 5 ensures that the positioning pin 6 and the connector 5 are fixed while also meeting the clamping requirements for workpieces of different heights. For longer workpieces, the longer the portion protruding from the chuck after clamping, the greater the wobble during workpiece processing and welding. The above settings ensure effective clamping of workpieces of different heights.

[0030] Please see Figure 2 Furthermore, the head of the positioning post 6 is provided with an adjustment groove 61. Specifically, the adjustment groove 61 is a slotted groove or a Phillips head groove. Since the head of the positioning post 6 is provided with external threads and its body is located in the clamping cavity 4, when it is necessary to screw the positioning post 6 into the connector 5, there is no place to grip the positioning post 6. By providing the adjustment groove 61, it is easy to insert a slotted screwdriver or a Phillips head screwdriver into the adjustment groove 61 and adjust the position of the positioning post 6 by rotating the screwdriver.

[0031] Please see Figure 4-5 Furthermore, the lower end face of the connector 5 forms an angle 7 with the upper end face of the first clamping member 1. (See also...) Figure 5 The included angle 7 is at its maximum when the lower sidewall of the first clamping member 1 is completely in contact with the lower sidewall of the second clamping member 2; please refer to Figure 4 When the upper part of the first clamping member 1 rotates, causing its lower part to gradually move away from the lower part of the second clamping member 2, the included angle 7 gradually decreases. Through the above arrangement, rotation space is provided when the upper part of the first clamping member 1 and the upper part of the second clamping member 2 rotate relative to each other, thus avoiding interference.

[0032] Please see Figure 2 Furthermore, the quick-release chuck also includes a connecting core 8 and a connecting rod 9. The outer peripheral wall of the connecting core 8 is provided with external threads, and the connecting rod 9 is hollow with internal threads in its inner cavity. The upper part of the connecting core 8 is threadedly connected to the lower part of the connecting rod 9, and the lower part of the connecting core 8 is threadedly connected to the upper part of the connecting head 5. By providing the connecting core 8, the connecting head 5, the second clamping member 2, and the main body (connecting rod 9) are connected. The connecting core 8 is provided with an upper connecting portion 81 and a lower connecting portion 82. In this embodiment, the diameter of the upper connecting portion 81 is smaller than that of the lower connecting portion 82, serving to position the connecting rod 9, the upper connecting portion 81, the lower connecting portion 82, and the connecting head 5. In actual use, first screw the upper connecting part 81 of the connecting core 8 into the connecting rod 9, then hold the connecting head 5 and screw the connecting head 5, which has been adjusted to the height of the positioning post 6, into the lower connecting part 82 of the connecting core 8 until the upper end face of the connecting head 5 abuts against the lower end face of the connecting rod 9, thus completing the installation of the connecting rod 9 and the connecting head 5. Then, install the workpiece in the clamping cavity 4.

[0033] Please see Figure 1 and Figure 2 Furthermore, a first slot 13 is formed on the outer peripheral wall of the first clamping member 1, and a second slot 22 corresponding to the first slot 13 is formed on the outer peripheral wall of the second clamping member 2. The first slot 13 and the second slot 22 form an annular slot 10, and the elastic constraint member 3 is fitted in the annular slot 10. Under the action of the elastic constraint member 3, the side walls of the first clamping member 1 and the second clamping member 2 are in contact with each other. The operator slightly pries the first clamping member 1 away from the second clamping member 2 and puts the workpiece into the clamping cavity 4 until the upper end face of the workpiece abuts against the lower end face of the positioning post 6. Then, the grip on the first clamping member 1 is released. Under the action of the elastic constraint member 3, the first clamping member 1 and the second clamping member 2 move closer to each other, thus clamping the workpiece. By setting the annular slot 10, a positioning function is provided for the installation of the elastic constraint member 3, preventing the elastic constraint member 3 from shifting. The above structure is simple, and the installation and disassembly of the workpiece are very convenient and quick, which is conducive to large-scale promotion and application.

[0034] Please see Figure 1 Furthermore, the number of first slots 13 is set to one or more, and the number of second slots 22 is the same as the number of first slots 13, with each first slot 13 corresponding to one second slot 22. Each annular slot 10 is provided with one elastic constraint member 3. The provision of one or more annular slots 10 is used to enhance the constraint force of the elastic constraint member 3 on the first and second arc-shaped shells, that is, to enhance the clamping force of the first and second arc-shaped shells on the workpiece.

[0035] Furthermore, the elastic constraint element 3 is an elastic threaded ring. The elastic threaded ring is an existing component, which is inexpensive, has good elasticity, and helps reduce the manufacturing cost of the chuck.

[0036] In summary, this invention, by setting a first clamping member 1 and a second clamping member 2, forms a clamping cavity 4 for placing workpieces. By rotatably connecting the upper parts of the first clamping member 1 and the upper parts of the second clamping member 2, the clamping cavity 4 can be enlarged or reduced according to the shape of the workpiece. By setting an elastic constraint member 3, the workpiece is clamped when the first clamping member 1 and the second clamping member 2 are close together. This structure can effectively clamp small, regular-shaped objects of different shapes, facilitating the processing and welding of the fixed workpieces. Furthermore, the quick installation and removal of workpieces improves production efficiency. Compared with existing fixtures, the chuck can effectively clamp different workpieces without repeatedly changing clamping blocks of different shapes, significantly saving production costs. The adapter ear 11 and the notch 21 provide a certain positioning function for the first clamping member 1, preventing displacement. The limiting corner groove 12 enhances the clamping effect on polygonal workpieces. Positioning pins 6 are used for axial positioning of workpieces of different heights. Adjustment grooves 61 facilitate adjustment of the length of the positioning pin 6 within the clamping cavity 4. An included angle 7 provides rotational space when the upper parts of the first clamping member 1 and the second clamping member 2 rotate relative to each other, preventing interference. Connecting cores 8 facilitate quick installation and disassembly of the connecting head 5 and connecting rod 9. Annular grooves 10 facilitate the positioning of the elastic constraint member 3, preventing displacement. Multiple annular grooves 10 enhance the rebound force and clamping force of the elastic constraint member 3.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 this invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A quick collet, characterized by, The utility model provides a quick clamp, which comprises a first clamping piece, a second clamping piece and an elastic constraint piece; the first clamping piece is detachably connected with the second clamping piece; the upper part of the first clamping piece is rotatably connected with the upper part of the second clamping piece, so that the lower part of the first clamping piece is close to or away from the lower part of the second clamping piece; the first clamping piece and the second clamping piece enclose a clamping cavity for mounting a workpiece; and the elastic constraint piece is used for moving the first clamping piece and the second clamping piece towards each other to clamp the workpiece. The first clamping piece is a first arc-shaped shell, the second clamping piece is a second arc-shaped shell, the first arc-shaped shell and the second arc-shaped shell combine to form a circular tube body, the upper part of the first arc-shaped shell is provided with an adapter lug, and the second arc-shaped shell is provided with a notch matched with the adapter lug; the upper end surface of the second clamping piece is further connected with a connecting head, and the connecting head is integrally formed with the second clamping piece; a threaded hole communicated with the clamping cavity is formed in the connecting head, a positioning column is arranged in the threaded hole of the connecting head, the head of the positioning column is provided with an external thread matched with the threaded hole, the column body of the positioning column is arranged in the clamping cavity, and the end surface of the positioning column away from the connecting head is used for axial positioning of the workpiece; the lower end surface of the connecting head forms an angle with the upper end surface of the first clamping piece; a first clamping groove is formed in the outer peripheral wall of the first clamping piece, a second clamping groove matched with the first clamping groove is formed in the outer peripheral wall of the second clamping piece, the first clamping groove and the second clamping groove form an annular clamping groove, and the elastic constraint piece is sleeved in the annular clamping groove; the clamping cavity is a through hole, a limiting angle groove is formed in the inner wall of the first arc-shaped shell and the second arc-shaped shell, the limiting angle grooves are arranged in number of N, N is an integer greater than or equal to 3, an adjusting groove is formed in the head of the positioning column; the quick clamp further comprises a connecting core and a connecting rod, the outer peripheral wall of the connecting core is provided with an external thread, the connecting rod is hollow and provided with an internal thread in the inner cavity, the upper part of the connecting core is threadedly connected with the lower part of the connecting rod, and the lower part of the connecting core is threadedly connected with the upper part of the connecting head; the number of the first clamping grooves is more than one, the number of the second clamping grooves is the same as that of the first clamping grooves, each first clamping groove is matched with a second clamping groove, and each annular clamping groove is provided with an elastic constraint piece.

2. The quick collet chuck of claim 1, wherein The elastic constraint piece is an elastic thread ring.

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