Fixing chuck for numerical control machine tool

Abstract

The utility model belongs to the technical field of fixing chucks, and particularly relates to a fixing chuck for a numerical control machine tool, which comprises a mounting plate, the right side of the mounting plate is in contact with a chuck, a sliding block is slidably connected in the mounting plate, one side of the sliding block close to the chuck is fixedly connected with a clamping block, a clamping groove is formed in the chuck, and the clamping block is fixedly connected with the clamping groove. A threaded rod is rotationally connected into the mounting plate, right-hand and left-hand threads are arranged on the outer side of the threaded rod, and the threaded rod is connected with the sliding block through the threads. A linkage structure of the sliding block, the clamping block and the threaded rod is innovatively designed, the threaded rod is rotated to drive the sliding block to move, the clamping block is driven to be separated from the chuck clamping state, rapid disassembly is achieved, the problem that a traditional fixed chuck is inconvenient to overhaul due to tedious disassembly steps is effectively solved, the maintenance process is simplified, and the maintenance efficiency is improved. Maintenance efficiency of the numerical control machine tool chuck is remarkably improved, and downtime of equipment is shortened.

Description

Technical Field

[0001] This utility model relates to the field of fixed chuck technology, specifically a fixed chuck for CNC machine tools. Background Technology

[0002] The fixed chuck for CNC machine tools is a crucial auxiliary device used in machining to stabilize workpieces, playing an irreplaceable role in ensuring machining accuracy and efficiency. In CNC machining scenarios, workpieces must withstand complex conditions such as high-speed rotation and multi-axis simultaneous cutting. The core value of the fixed chuck lies in providing a stable and reliable clamping force for the workpiece. Whether it is metal bars, disc-shaped parts, or irregularly shaped components, the chuck can firmly fix the workpiece on the machine tool spindle through appropriate clamping methods, avoiding displacement or loosening caused by vibration, centrifugal force, or cutting force during machining.

[0003] In actual production, the clamping stability of the fixed chuck directly affects the machining quality. If the clamping is not secure, problems such as workpiece ejection, surface scratches, and dimensional deviations may occur, even damaging the cutting tool or machine tool. Proper clamping force control, on the other hand, ensures the workpiece remains stationary under high-speed rotation (e.g., thousands of revolutions per minute) and multi-directional cutting forces, allowing the cutting tool to precisely machine along a preset path. Furthermore, the synergy between the chuck and the CNC system is crucial—modern CNC machine tools are often equipped with hydraulic or pneumatic chucks, which can automatically adjust the clamping force through a program to adapt to workpieces of different materials (e.g., steel, aluminum, titanium alloys) and shapes, further improving machining efficiency and consistency.

[0004] However, the fixed chucks used in CNC machine tools present a problem of inconvenient disassembly in actual use. Since the chuck needs to frequently clamp workpieces of different sizes, existing designs often employ bolt fastening or complex locking mechanisms, requiring repeated operations with specialized tools during disassembly and assembly, which is time-consuming. Especially in high-intensity continuous machining scenarios, frequent chuck changes further exacerbate the operational complexity and affect the production rhythm. Utility Model Content

[0005] The purpose of this utility model is to provide a fixed chuck for CNC machine tools, which solves the problems of inconvenient disassembly and maintenance of fixed chucks for CNC machine tools.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixed chuck for a CNC machine tool, comprising a mounting plate, a chuck contacting the right side of the mounting plate, a slider slidably connected inside the mounting plate, a locking block fixedly connected to the side of the slider near the chuck, a locking groove opened inside the chuck, a threaded rod rotatably connected inside the mounting plate, the outer side of the threaded rod being provided with positive and negative threads, the threaded rod being threadedly connected to the slider, a knob fixedly connected to the upper end of the threaded rod, the knob being rotatably connected to the mounting plate, and a limit mechanism provided on the mounting plate.

[0007] Preferably, the card block contacts the mounting plate and is slidably connected to the card slot. The design of the card block can limit the position of the chuck.

[0008] Preferably, a retaining ring is fixedly connected to the outer side of the threaded rod, and the retaining ring contacts the inner wall of the mounting plate. The retaining ring is designed to limit the movement of the threaded rod.

[0009] Preferably, the limiting mechanism includes a limiting frame, a limiting block is fixedly connected to the side of the limiting frame near the knob, a guide rod is fixedly connected inside the limiting frame, a guide block is fixedly connected to the left side of the mounting plate, and a spring is provided on the outside of the guide rod. Through the design of the limiting mechanism, the chuck can be easily disassembled while maintaining stable installation.

[0010] Preferably, the limiting frame is in contact with the knob, and the limiting block is slidably connected to the knob. Through the design of the limiting frame, the knob can be limited.

[0011] Preferably, the guide block is slidably connected to the limiting frame, and the guide block is slidably connected to the guide rod. Through the design of the guide block, the limiting frame can be guided.

[0012] Preferably, one end of the spring contacts the guide block, and the other end of the spring contacts the limiting frame. Through the design of the spring, the limiting frame can be driven to limit the knob.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model features an innovative design with a linkage structure between the slider, the locking block, and the threaded rod. Rotating the threaded rod drives the slider to move, causing the locking block to disengage from the chuck and achieve quick disassembly. This structure effectively solves the problem of inconvenient maintenance caused by the cumbersome disassembly steps of traditional fixed chucks, simplifies the maintenance process, significantly improves the maintenance efficiency of CNC machine tool chucks, and reduces equipment downtime.

[0015] 2. This utility model features an innovative design with a co-operating structure of a limiting frame, a limiting block, and a spring. The spring force drives the limiting block on the limiting frame to precisely engage with the knob groove, achieving rapid positioning and locking of the knob. This structure ensures stable and reliable chuck installation, effectively preventing loosening caused by processing vibrations. Furthermore, the limiting mechanism allows for easy release of the limit, significantly simplifying the disassembly process and balancing the stability of the chuck's use with efficient maintenance. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 A partial three-dimensional structural diagram;

[0018] Figure 3 For the present utility model Figure 1 A partial structural front sectional view;

[0019] Figure 4 For the present utility model Figure 2 Enlarged view of part A of the structure.

[0020] In the diagram: 1. Mounting plate; 2. Chuck; 3. Slider; 31. Locking block; 32. Locking groove; 33. Threaded rod; 34. Retaining ring; 35. Knob; 4. Limiting mechanism; 41. Limiting frame; 42. Limiting block; 43. Guide rod; 44. Guide block; 45. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 A fixed chuck for a CNC machine tool includes a mounting plate 1, a chuck 2 in contact with the right side of the mounting plate 1, a slider 3 slidably connected inside the mounting plate 1, a locking block 31 fixedly connected to the side of the slider 3 near the chuck 2, a locking groove 32 opened inside the chuck 2, the locking block 31 in contact with the mounting plate 1, and the locking block 31 slidably connected to the locking groove 32. Through the design of the locking block 31, the chuck 2 can be limited. A threaded rod 33 is rotatably connected inside the mounting plate 1.

[0023] Please see Figure 2-4 The threaded rod 33 has positive and negative threads on its outer side. The threaded rod 33 is connected to the slider 3 by threads. A retaining ring 34 is fixedly connected to the outer side of the threaded rod 33. The retaining ring 34 contacts the inner wall of the mounting plate 1. The retaining ring 34 can limit the threaded rod 33 through its design. A knob 35 is fixedly connected to the upper end of the threaded rod 33. The knob 35 is rotatably connected to the mounting plate 1. A limit mechanism 4 is provided on the mounting plate 1.

[0024] Please see Figure 2-4The limiting mechanism 4 includes a limiting frame 41. A limiting block 42 is fixedly connected to the side of the limiting frame 41 near the knob 35. The limiting frame 41 contacts the knob 35, and the limiting block 42 is slidably connected to the knob 35. Through the design of the limiting frame 41, the knob 35 can be limited. A guide rod 43 is fixedly connected inside the limiting frame 41. A guide block 44 is fixedly connected to the left side of the mounting plate 1. The guide block 44 is slidably connected to the limiting frame 41 and the guide rod 43. Through the design of the guide block 44, the limiting frame 41 can be guided. A spring 45 is provided on the outside of the guide rod 43. One end of the spring 45 contacts the guide block 44, and the other end of the spring 45 contacts the limiting frame 41. Through the design of the spring 45, the limiting frame 41 can be driven to limit the knob 35. Through the design of the limiting mechanism 4, the chuck 2 can be easily disassembled while maintaining stable installation.

[0025] The specific implementation process of this utility model is as follows: When in use, by moving the limiting frame 41 away from the knob 35, the limiting frame 41 drives the guide rod 43 to slide in the guide block 44, so that the limiting frame 41 squeezes the spring 45, and the limiting frame 41 drives the limiting block 42 to slide out of the knob 35, thus releasing the limitation on the knob 35.

[0026] By rotating the knob 35, the knob 35 drives the threaded rod 33 to rotate, causing the threaded rod 33 and the slider 3 to move in a threaded motion. This causes the slider 3 to move on the threaded rod 33, which in turn causes the locking block 31 to move. The locking block 31 then slides in the slot 32, so that the locking block 31 is no longer locked to the chuck 2. This releases the chuck 2 from its limiting position, making it easier to disassemble and repair the chuck 2.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed chuck for a CNC machine tool, comprising a mounting plate (1), characterized in that: The right side of the mounting plate (1) is in contact with a chuck (2). A slider (3) is slidably connected inside the mounting plate (1). A locking block (31) is fixedly connected to the side of the slider (3) near the chuck (2). A locking groove (32) is opened inside the chuck (2). A threaded rod (33) is rotatably connected inside the mounting plate (1). The outer side of the threaded rod (33) is provided with positive and negative threads. The threaded rod (33) is connected to the slider (3) by threads. A knob (35) is fixedly connected to the upper end of the threaded rod (33). The knob (35) is rotatably connected to the mounting plate (1). A limit mechanism (4) is provided on the mounting plate (1).

2. A fixed chuck for a CNC machine tool according to claim 1, characterized in that: The card block (31) contacts the mounting plate (1), and the card block (31) is slidably connected to the card slot (32).

3. A fixed chuck for a CNC machine tool according to claim 1, characterized in that: A retaining ring (34) is fixedly connected to the outer side of the threaded rod (33), and the retaining ring (34) contacts the inner wall of the mounting plate (1).

4. A fixed chuck for a CNC machine tool according to claim 1, characterized in that: The limiting mechanism (4) includes a limiting frame (41), a limiting block (42) is fixedly connected to the side of the limiting frame (41) near the knob (35), a guide rod (43) is fixedly connected inside the limiting frame (41), a guide block (44) is fixedly connected to the left side of the mounting plate (1), and a spring (45) is provided on the outside of the guide rod (43).

5. A fixed chuck for a CNC machine tool according to claim 4, characterized in that: The limiting frame (41) contacts the knob (35), and the limiting block (42) is slidably connected to the knob (35).

6. A fixed chuck for a CNC machine tool according to claim 4, characterized in that: The guide block (44) is slidably connected to the limiting frame (41), and the guide block (44) is slidably connected to the guide rod (43).

7. A fixed chuck for a CNC machine tool according to claim 4, characterized in that: One end of the spring (45) is in contact with the guide block (44), and the other end of the spring (45) is in contact with the limiting frame (41).

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