Flexible chuck for numerical control machine tool

Abstract

The flexible chuck for the numerical control machine tool comprises an outer shell, one end of the outer shell is fixedly connected with a connecting disc, a cavity is formed in the other end of the outer shell, a guide hole is formed in one end of the interior of the cavity, and a wedge-shaped clamping plate is installed on the side face of the interior of the cavity in a sliding mode. A flexible pad is fixedly attached to the surface of one side of the wedge-shaped clamping plate, one end of the interior of the cavity is in threaded connection with an adjusting ring, a conical hole is formed in the adjusting ring, the side face of the conical hole is slidably connected to the outer surface of the wedge-shaped clamping plate in a sleeving mode, and a combined counter bore is formed in the outer surface of the outer shell. A combined rod is slidably mounted in the combined counter bore, a threaded head is arranged at one end of the combined rod, rotation adjustment is facilitated for clamping and loosening, accuracy and stability are achieved, the combined rod and the threaded head are mounted through the combined counter bore, split connection and positioning can be achieved, interference is avoided, reset separation, disassembly and replacement are also facilitated, and adaptability is high.

Description

Technical Field

[0001] The utility model relates to the field of flexible chucks, and more specifically to a flexible chuck used for numerically controlled machine tools. Background Art

[0002] CNC machine tools are one of the most widely used CNC machine tools at present. They are mainly used for cutting and processing of inner and outer cylindrical surfaces of shaft parts or disk parts, inner and outer conical surfaces of cone angles, complex rotating inner and outer curved surfaces, and cylindrical and conical threads. They can also perform grooving, drilling, reaming, boring, etc. CNC machine tools automatically process the parts to be processed according to the programmed processing program. We compile the processing route, process parameters, tool movement trajectory, movement amount, cutting parameters and auxiliary functions of the parts into a processing program according to the instruction code and program format specified by the CNC machine tool, and then record the contents of this program sheet on the control medium, and then input it into the CNC device of the CNC machine tool, so as to command the machine tool to process parts. At present, most of the tool chucks on CNC machine tools use collets, and the tool hole of the collet is relatively fixed. When the tool body and the collet hole do not match, it is necessary to replace the collet of other models.

[0003] The utility model with authorization announcement number CN220240804U discloses a flexible chuck for a CNC machine tool, including a transmission shaft connecting piece, a side wall of the transmission shaft connecting piece is provided with a first threaded hole, one end of the transmission shaft connecting piece is provided with a chuck body, and the outer sides of the transmission shaft connecting piece and the chuck body are connected with a chuck sleeve; the utility model has a simple structure and a reasonable design. By arranging a rubber layer between the clamping blocks, the expansion and compression characteristics of the rubber can be utilized, so that the chuck can cope with more tools of different sizes and adapt to more different turning scenes, reducing the frequency of chuck replacement, thereby saving the cost of replacing the chuck. On the other hand, by arranging a cylinder body on the outside of the chuck body and the transmission shaft connecting piece, the two can be tightened, indirectly strengthening the pressing force inside the tool groove to prevent the tool body from falling off. At the same time, the stainless steel spring sheet can effectively prevent the chuck body from falling off during installation, facilitating installation.

[0004] In the above-mentioned disclosed structure, the chuck body is arranged inside the connecting piece, but there is a lack of a structure for split assembly installation and a guide reset structure, which is not only not conducive to combined installation, but also not conducive to disassembly and replacement. It is also not convenient to reset and separate during clamping and adjustment, which affects the efficiency of use and needs to be improved. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a flexible chuck for CNC machine tools, which connects a wedge-shaped clamping plate through a cavity inside the outer shell, and sets a tapered hole in combination with an adjusting ring, which can be combined and positioned, convenient for rotation adjustment to clamp and loosen, and is accurate and stable. The combined rod and the threaded head are installed through the combined countersunk hole, which can be connected and positioned separately to avoid interference, and is also convenient for resetting, separation, disassembly and replacement, and has high adaptability.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A flexible chuck for a numerically controlled machine tool comprises an outer shell, one end of which is fixedly connected to a connecting plate, a cavity is provided inside the other end of the outer shell, one end of the cavity is provided with a guide hole, a wedge-shaped clamp is slidably mounted on the inner side of the cavity, a flexible pad is fixedly fitted on one side surface of the wedge-shaped clamp, an adjustment ring is threadedly connected to the inner end of the cavity, a conical hole is provided inside the adjustment ring, the side of the conical hole is slidably sleeved on the outer surface of the wedge-shaped clamp, a combined countersunk hole is provided on the outer surface of the outer shell, a combined rod is slidably mounted inside the combined countersunk hole, one end of the combined rod is provided with a threaded head, the thread of the threaded head is threaded according to the position of one end of the wedge-shaped clamp, and the threaded head is located on one side of the inner part of the cavity.

[0008] Furthermore, the wedge-shaped clamping plates are evenly distributed at equal angles inside the cavity and are located on one side of the inner part of the outer shell.

[0009] Furthermore, one end of the combination rod is fixedly connected to an adjusting head, and the adjusting head is slidably connected to the inside of the combination countersunk hole.

[0010] Furthermore, a reset spring is fixedly connected to one side of the adjusting head, and the reset spring is slidably installed inside the combined countersunk hole. By connecting the reset spring to the adjusting head, the combined rod support can be reset, and at the same time, it is convenient to rotate and adjust for combined installation, avoiding interference, and being stable and efficient.

[0011] Furthermore, one side of the adjustment ring is fixedly connected with a lever, and the lever is located on one side of the outer shell.

[0012] Furthermore, a connecting socket is provided inside one end of the lever, and the connecting socket is in a hexagonal structure.

[0013] Furthermore, the levers are symmetrically distributed on both sides of the combined countersunk hole. The levers are provided with connecting sockets, and can be directly rotated for adjustment, or connected to an extension rod for rotation, which is convenient and efficient.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) This solution connects the wedge-shaped clamping plate through the cavity inside the outer shell, and sets a conical hole in combination with the adjusting ring, which can be combined and positioned, convenient for rotation adjustment to clamp and loosen, accurate and stable, and through the combined countersunk hole to install the combined rod and the threaded head, it can be split and connected and positioned to avoid interference, and it is also convenient for resetting, separation, disassembly and replacement, and has high adaptability.

[0016] (2) By connecting the reset spring to the adjustment head, the combination rod support can be reset, and the combination installation can be conveniently carried out by rotating adjustment to avoid interference, which is stable and efficient.

[0017] (3) The connecting socket is set by the lever, which can be directly rotated for adjustment or connected to an extension rod for rotation, which is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the plane structure cross section of the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the combined rod connection of the utility model;

[0021] Figure 4 It is a partial structural diagram of the lever connection of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1 outer shell, 11 connecting plate, 12 cavity, 13 guide hole, 14 wedge-shaped clamping plate, 15 flexible pad, 16 adjustment ring, 17 tapered hole, 2 combination countersunk hole, 21 combination rod, 22 threaded head, 23 adjustment head, 24 return spring, 25 lever, 26 connecting jack. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 and Figure 3, a flexible chuck for a CNC machine tool comprises an outer shell 1, one end of the outer shell 1 is fixedly connected with a connecting plate 11, which can be installed on the CNC machine tool in combination with screws, which is convenient for positioning and use, and has high adaptability. A cavity 12 is arranged inside the other end of the outer shell 1, and a guide hole 13 is arranged at one end of the cavity 12, which can guide a longer bar material and facilitate insertion into the middle position for combined installation. A wedge-shaped clamping plate 14 is slidably installed on the inner side of the cavity 12, which can be installed in a split combination, which is convenient for clamping and positioning after alignment adjustment. A flexible pad 15 is fixedly attached to one side surface of the wedge-shaped clamping plate 14, which can assist in clamping and avoid damage to the surface of the workpiece, which is convenient for flexible protection, safety and stability. An adjustment ring 16 is threadedly connected to one end of the cavity 12, and a conical hole is arranged inside the adjustment ring 16 17, the side of the tapered hole 17 is slidably sleeved on the outer surface of the wedge-shaped clamping plate 14, and the adjusting ring 16 can be threadedly rotated. The side of the tapered hole 17 is pressed tightly against the surface of the wedge-shaped clamping plate 14, and the thickness of the connection position is increased, which can be squeezed inwardly to clamp and position, which is convenient for adjustment and use, convenient and efficient. The outer surface of the outer shell 1 is provided with a combined countersunk hole 2, and a combined rod 21 is slidably installed inside the combined countersunk hole 2. A threaded head 22 is provided at one end of the combined rod 21. The thread of the threaded head 22 is located on one side of the inner part of the cavity 12. The combined rod 21 can be inserted from the outside of the combined countersunk hole 2, and the threaded head 22 is connected to the surface of the wedge-shaped clamping plate 14. It can be installed and positioned separately to avoid interference, and can also be disassembled and replaced, which is convenient for maintenance and has high adaptability.

[0026] See also Figure 2 and Figure 3 The wedge-shaped clamping plate 14 is evenly distributed at equal angles inside the cavity 12 and is located on one side of the inner part of the outer shell 1. One end of the combination rod 21 is fixedly connected with an adjusting head 23, and the adjusting head 23 is slidably connected to the inside of the combination countersunk hole 2. One side of the adjusting head 23 is fixedly connected with a reset spring 24, and the reset spring 24 is slidably installed inside the combination countersunk hole 2. By connecting the reset spring with the adjusting head, the combination rod support can be reset, and at the same time, it is convenient to rotate and adjust for combined installation to avoid interference, which is stable and efficient. When installing the combination rod 21, the reset spring 24 can be synchronously linked, and then the adjusting head 23 is connected with a screwdriver for rotation adjustment, which is convenient for split installation. In this way, the reset spring 24 is tightened to reset and separate with the wedge clamping plate 14, which is convenient for loosening the workpiece and is conducive to adjustment.

[0027] See also Figure 2 and Figure 4A lever 25 is fixedly connected to one side of the adjusting ring 16, and the lever 25 is located at one side of the outer shell 1. A connecting socket 26 is provided inside one end of the lever 25. The connecting socket 26 has a hexagonal structure. The lever 25 is symmetrically distributed on both sides of the combined countersunk hole 2. By setting the connecting socket on the lever, it can be directly rotated for adjustment, or it can be connected to an extension rod for rotation, which is convenient and efficient.

[0028] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A flexible chuck for a numerically controlled machine tool, comprising an outer shell (1), one end of the outer shell (1) being fixedly connected to a connecting plate (11), characterized in that: A cavity (12) is provided inside the other end of the outer shell (1), and a guide hole (13) is provided inside one end of the cavity (12). A wedge-shaped clamping plate (14) is slidably mounted on the inner side surface of the cavity (12), and a flexible pad (15) is fixedly attached to one side surface of the wedge-shaped clamping plate (14). An adjustment ring (16) is threadedly connected to one end of the inner side of the cavity (12), and a conical hole (17) is provided inside the adjustment ring (16). The side surface of the conical hole (17) is slidably sleeved on the outer surface of the wedge-shaped clamping plate (14). A combination countersunk hole (2) is provided on the outer surface of the outer shell (1), and a combination rod (21) is slidably mounted inside the combination countersunk hole (2). A threaded head (22) is provided at one end of the combination rod (21), and the threaded head (22) is threadedly arranged at one end of the wedge-shaped clamping plate (14). The threaded head (22) is located on one side of the inner side of the cavity (12).

2. The flexible chuck for a CNC machine tool according to claim 1, characterized in that: The wedge-shaped clamping plates (14) are evenly distributed at equal angles inside the cavity (12) and are located on one side of the interior of the outer shell (1).

3. The flexible chuck for a CNC machine tool according to claim 1, characterized in that: One end of the combination rod (21) is fixedly connected to an adjustment head (23), and the adjustment head (23) is slidably connected to the interior of the combination countersunk hole (2).

4. The flexible chuck for a CNC machine tool according to claim 3, characterized in that: A return spring (24) is fixedly connected to one side of the adjustment head (23), and the return spring (24) is slidably mounted inside the combined countersunk hole (2).

5. The flexible chuck for a CNC machine tool according to claim 1, characterized in that: A lever (25) is fixedly connected to one side of the adjustment ring (16), and the lever (25) is located on one side of the outer shell (1).

6. The flexible chuck for a CNC machine tool according to claim 5, characterized in that: A connecting socket (26) is provided inside one end of the shifting rod (25), and the connecting socket (26) is in a hexagonal structure.

7. The flexible chuck for a CNC machine tool according to claim 5, characterized in that: The levers (25) are symmetrically distributed on both sides of the combined countersunk hole (2).

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