CNC machining tool

Abstract

The invention discloses a CNC machining tool, and relates to the field of CNC machining, the CNC machining tool comprises a supporting stabilizing frame and a curved surface limiting rotating groove, a clamping limiting frame is installed in the supporting stabilizing frame, a meshing transmission mechanism for extruding a reset extrusion spring is installed in the clamping limiting frame, and the meshing transmission mechanism comprises two side stabilizing plates; and the stabilizing plates on the two sides transversely slide in the clamping limiting frame in a limiting manner. According to the CNC machining tool, when a workpiece needs to be preliminarily clamped, a meshing gear rod is directly rotated, so that a side extension rack synchronously pushes two sets of two side stabilizing plates outwards, at the moment, the workpiece is directly placed in a workpiece placing frame, the meshing gear rod is directly and reversely rotated after placing is completed, and the workpiece is clamped through the meshing gear rod; the workpiece can be fixed through meshing movement and reset extrusion springs, by means of the design, the disassembly and maintenance operation convenience is improved, the equipment use cost and the manual operation cost are reduced, and meanwhile clamping and adjusting of the workpiece are faster and more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of CNC machining, in particular to a CNC machining tool. Background Art

[0002] CNC machining tooling refers to the devices used to fix and position the workpiece and tool during the CNC machining process. Its accuracy and stability directly affect the machining precision, efficiency and safety. The tooling design needs to be combined with the workpiece shape, material properties and machining process requirements. Common types include fixtures, tool holders, locating pins, etc. Among them, the positioning tooling achieves precise fixation of the workpiece through mechanical structure, which can effectively avoid clamping deformation or slipping problems in the machining of tubular and special-shaped parts, especially in the machining of tubular and special-shaped parts.

[0003] Existing designs typically use manual cleaning during the machining process. Workers use a high-pressure gun to blow away debris and cleaning fluid from the workpiece, then soak the workpiece in a cleaning container. Finally, the cleaned workpiece is dried in a drying oven or directly blown dry with an air gun. Because there are no protective measures throughout the cleaning process, the blown cleaning fluid and debris splash everywhere, causing a harsh production workshop environment. Furthermore, during the cleaning process, the cleaning fluid and debris can easily splash into the worker's eyes, causing swelling or even blindness. Furthermore, because the cleaning process is entirely manual, workpiece cleaning efficiency decreases, which seriously impacts CNC machining efficiency and significantly reduces workpiece machining quality.

[0004] In order to overcome the above-mentioned defects, the prior art (publication number: CN111015350B, Chinese patent publication date: 2020-06-26) discloses a CNC machining system, which continuously feeds materials into the CNC machining system through a feeding device; then, through a first grasping device, the workpiece to be processed is grasped and placed on the first CNC machine tool for processing. After processing, the first grasping device places the processed workpiece through the operation port in a cleaning device for cleaning, ensuring that the workpiece is clean and clean before entering the CNC machine tool in the next process, avoiding residual chips and affecting the clamping of the workpiece, which is beneficial to improving the CNC machining accuracy. Since the CNC machining system is fully automated and completely replaces manual operation, the workpiece cleaning efficiency and cleaning quality are greatly improved. At the same time, it also effectively avoids chips or cutting fluid splashing into the eyes, which is beneficial to ensuring the personal safety of the operator. The cleaned workpiece is grasped by the second grasping device, the third grasping device and the pressing device to the third CNC machine tool, thus ensuring the stability and continuous operation of the CNC machining system.

[0005] Although the above design can solve the above problems, the existing design is not convenient enough when disassembly and maintenance operations are required, which increases the use cost of the equipment and the labor cost. At the same time, the clamping adjustment of the workpiece is very inconvenient, which reduces the processing efficiency. At the same time, the existing design has a limited clamping area for the workpiece, which causes sliding and deviation after being subjected to forces in multiple directions, reducing the stability and safety of the equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a CNC machining tool to solve the problems raised in the above-mentioned background technology, such as the lack of convenience of the existing design when disassembly and maintenance operations are required, which increases the use cost of the equipment and the labor cost. At the same time, the clamping and adjustment of the workpiece are very inconvenient, which reduces the machining efficiency. At the same time, the existing design has a limited clamping area for the workpiece, which causes sliding and deviation after being subjected to forces in multiple directions, reducing the stability and safety of the equipment.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC machining tool, comprising a supporting stabilizing frame and a curved limiting rotation groove, a clamping limiting frame installed inside the supporting stabilizing frame, an engaging transmission mechanism for squeezing a reset extrusion spring installed inside the clamping limiting frame, the engaging transmission mechanism comprising two side stabilizing plates, and the two side stabilizing plates slide laterally along the inside of the clamping limiting frame, the outer surfaces of the two side stabilizing plates are provided with a resisting through inner groove, and a downward stabilizing mechanism for rotating the top stabilizing frame is installed inside the resisting through inner groove.

[0008] Furthermore, the downward pressure stabilizing mechanism includes a rotating downward pressure plate, and the rotating downward pressure plate is rotatably mounted on the inner side of the supporting stabilizing frame, the top stabilizing frame is fixedly mounted on the inner surface of the rotating downward pressure plate, and an auxiliary extension rod is mounted on the outer surface of the rotating downward pressure plate.

[0009] Furthermore, curved limit rotation grooves are provided on the left and right side surfaces of the support and stabilization frame, and the auxiliary extension rod performs limited circular sliding along the inside of the curved limit rotation groove. Top downward pressure springs are installed on the left and right side surfaces inside the support and stabilization frame, and the downward rotation trajectory of the rotating downward pressure plate conflicts with the top of the top downward pressure spring.

[0010] Furthermore, the rotating downward pressure plate, top stabilizing frame, top downward pressure spring and auxiliary extension rod are of an integrated design, and the rotation trajectory of the top stabilizing frame corresponds to the installation position of the workpiece placement frame. The rotating downward pressure plate, top stabilizing frame and top downward pressure spring are installed in two groups symmetrically about the center point of the supporting stabilizing frame, and the top lower surface of the rotating downward pressure plate contacts the upper end of the top downward pressure spring to form an elastic structure.

[0011] Furthermore, the inner surface of the curved limit rotation groove contacts the outer surface of the auxiliary extension rod to form a sliding structure, and the end of the top stabilizing frame is rotatably installed on the inner surface of the rotating lower pressure plate. The installation position of the rotating lower pressure plate is installed through the inside of the inner groove, and the inward movement trajectory of the stabilizing plates on both sides will conflict with the upper end inclined surface of the rotating lower pressure plate.

[0012] Furthermore, a workpiece placement rack is installed on the inner surface of the supporting and stabilizing frame, and the installation position of the workpiece placement rack corresponds to the internal movement trajectory of the two sets of side stabilizing plates. An engaging gear rod is installed inside the supporting and stabilizing frame, and side extension racks are installed on the sides of the two side stabilizing plates.

[0013] Furthermore, the meshing gear rod is meshed with the side extension rack, and two groups of side stabilizing plates and side extension racks are installed symmetrically about the center point of the supporting stabilizing frame. The left and right groups of side extension racks are installed symmetrically up and down, and oblique connecting rods are installed on the back of the side stabilizing plates.

[0014] Furthermore, a vertical retraction frame is installed on the inner bottom surface of the supporting and stabilizing frame, and the end of the inclined connecting rod slides vertically along the inside of the vertical retraction frame. The end of the reset extrusion spring is fixedly installed inside the vertical retraction frame, and the front end of the reset extrusion spring is in conflict with the back side of the inclined connecting rod.

[0015] Furthermore, the oblique connecting rod, vertical retraction frame and reset extrusion spring are installed in two groups symmetrically about the center point of the two side stabilization plates, and the top of the oblique connecting rod slides vertically along the back of the two side stabilization plates, the meshing gear rod is installed horizontally through the interior of the supporting stabilization frame, and the inner surface of the clamping limit frame contacts the outer surface of the lower end of the two side stabilization plates to form a sliding structure.

[0016] Furthermore, the outer surface of the end of the inclined connecting rod contacts the inner surface of the vertical retraction frame to form a sliding structure, and the outer surface of the back side of the inclined connecting rod contacts the top of the reset extrusion spring to form an elastic structure, the outer surface of the meshing gear rod contacts the inner surface of the laterally extended rack to form a meshing structure, and the meshing gear rod is fixed to the outside of the stabilizing plates on both sides through the end of the laterally extended rack to form a transmission structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: when the CNC machining tool needs to perform a preliminary clamping operation on the workpiece, the meshing gear rod is directly rotated to make the side extension rack push the two sets of side stabilizing plates outward synchronously, and the workpiece is directly placed inside the workpiece placement rack. After the placement is completed, the meshing gear rod is directly rotated in the opposite direction, and the meshing movement and the reset extrusion spring will fix the workpiece. This design makes the disassembly and maintenance operations more convenient, reduces the use and manual operation costs of the equipment, and at the same time makes the clamping and adjustment of the workpiece faster; Furthermore, when the stabilizing plates on both sides move inward, the resistance penetrating inner groove will be pressed downward as the upper inclined surface of the rotating lower pressure plate is lowered until the top of the workpiece of the top stabilizing frame is clamped. The clamping angles of the rotating lower pressure plate, the resistance penetrating inner groove, and the top stabilizing frame are limited and stabilized by the top downward pressure spring. This design increases the clamping area of ​​the workpiece and prevents the equipment from sliding or deviating after being subjected to forces from multiple directions, thereby improving the stability and safety of the equipment. Furthermore, the left and right sets of side stabilizing plates and side extension racks are designed to be symmetrical on the left and right, and the two sets of side extension racks are designed to be flipped upside down, so that the rotation of the meshing gear rod will drive the two sets of side extension racks inward synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the support and stabilization frame of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the clamping and limiting frame of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the stabilizing plates on both sides of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the oblique connecting rod of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the reset extrusion spring of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the inner groove of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the curved surface limiting rotation groove of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the top downward pressure spring of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the auxiliary extension rod of the present invention.

[0019] In the figure: 1. Support and stabilization frame; 2. Clamping and limiting frame; 3. Stabilization plates on both sides; 4. Workpiece placement frame; 5. Oblique connecting rod; 6. Vertical retraction frame; 7. Reset extrusion spring; 8. Rotating pressure plate; 9. Resistance through inner groove; 10. Top stabilization frame; 11. Engaging gear rod; 12. Lateral extension rack; 13. Curved limit rotation groove; 14. Top pressure spring; 15. Auxiliary extension rod. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The present invention provides the following technical solutions: a CNC machining tool, comprising a support and stabilizing frame 1 and a curved surface limiting rotation groove 13, wherein a clamping and limiting frame 2 is installed inside the support and stabilizing frame 1, such as Figure 2 As shown, the interior of the clamping limit frame 2 is equipped with an engaging transmission mechanism for squeezing the reset extrusion spring 7, and the engaging transmission mechanism includes two side stabilizing plates 3, and the two side stabilizing plates 3 slide laterally along the interior of the clamping limit frame 2. The outer surfaces of the two side stabilizing plates 3 are provided with a resisting through inner groove 9, and the interior of the resisting through inner groove 9 is equipped with a downward stabilizing mechanism for rotating the top stabilizing frame 10.

[0022] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The technical solution shown is to solve the problem that the existing design is not convenient enough when disassembly and maintenance operations are required, the use cost of the equipment and the manual operation cost are increased, and the clamping and adjustment of the workpiece are very inconvenient, which reduces the processing efficiency. The following technical solution is disclosed: a workpiece placement rack 4 is installed on the inner surface of the support and stabilization frame 1, and the installation position of the workpiece placement rack 4 corresponds to the internal movement trajectory of the two sets of stabilization plates 3 on both sides. A meshing gear rod 11 is installed inside the support and stabilization frame 1, and side extension racks 12 are installed on the sides of the stabilization plates 3 on both sides. The meshing gear rod 11 and the side extension racks 12 are meshed with each other, and the stabilization plates 3 on both sides and the side extension racks 12 are installed in two groups symmetrically about the center point of the support and stabilization frame 1, such as Figure 3As shown, the left and right groups of side extension racks 12 are installed symmetrically up and down, and an oblique connecting rod 5 is installed on the back of the stabilizing plates 3 on both sides, and a vertical retraction frame 6 is installed on the inner bottom surface of the supporting stabilizing frame 1, and the end of the oblique connecting rod 5 is limited and vertically slid along the inside of the vertical retraction frame 6, and the end of the reset extrusion spring 7 is fixedly installed inside the vertical retraction frame 6, and the front end of the reset extrusion spring 7 is in conflict with the back of the oblique connecting rod 5. The oblique connecting rod 5, the vertical retraction frame 6 and the reset extrusion spring 7 are installed in two groups symmetrically about the center point of the stabilizing plates 3 on both sides, and the top of the oblique connecting rod 5 is vertically slid along the back of the stabilizing plates 3 on both sides, and the meshing gear rod 11 is installed horizontally through the inside of the supporting stabilizing frame 1, and the inner surface of the clamping limit frame 2 contacts the outer surface of the lower end of the stabilizing plates 3 on both sides to form a sliding structure.

[0023] When the front and rear sides of the workpiece need to be stabilized, the meshing gear rod 11 installed in the support and stabilizing frame 1 is directly driven to rotate. At this time, during the rotation of the meshing gear rod 11, the meshing motion of the side extension rack 12 in contact with the outer surface will be generated and driven. Since the side extension rack 12 is fixedly installed on the outer surface of the stabilizing plates 3 on both sides, the stabilizing plates 3 on both sides will slide synchronously laterally due to the drive of the side extension rack 12. At this time, the stabilizing plates 3 on both sides will slide laterally along the clamping limit frame 2 fixedly installed inside the support and stabilizing frame 1. Since the stabilizing plates 3 on both sides and the meshing gear rod 11 are installed in two groups symmetrically about the center point of the support and stabilizing frame 1, and the two groups of meshing gear rods 11 are designed to be symmetrical up and down, the two groups of stabilizing plates 3 on both sides will slide synchronously in opposite directions. When the stabilizing plates 3 on both sides move backward, the oblique connecting rod 5 installed on the back of the stabilizing plates 3 on both sides will be driven to slide backward. Figure 4 As shown, at this time, the end of the inclined connecting rod 5 will slide within the vertical retraction frame 6 which is also fixedly installed on the supporting stabilizing frame 1. During the sliding process of the inclined connecting rod 5, it will contact the top of the return extrusion spring 7 fixedly installed inside the vertical retraction frame 6, and in this process the return extrusion spring 7 will be squeezed and produce radial contraction. After sliding to the limit position, the top of the inclined connecting rod 5 will slide vertically along the back of the stabilizing plates 3 on both sides. At this time, the workpiece is directly placed on the workpiece placement frame 4 fixedly installed inside the supporting stabilizing frame 1, and the meshing gear rod 11 is rotated in the reverse direction. The workpiece can be clamped and stabilized by the stabilizing plates 3 on both sides and the meshing gear rod 11. This design makes the use of the equipment more convenient.

[0024] Example 2: Figure 6 、 Figure 7 、 Figure 8 and Figure 9The technical solution shown is to solve the problem that the clamping area of ​​the workpiece in the existing design is limited, which causes sliding and deviation after being subjected to forces in multiple directions, thereby reducing the stability and safety of the equipment. The following technical solution is disclosed: the downward pressure stabilizing mechanism includes a rotating downward pressure plate 8, and the rotating downward pressure plate 8 is rotatably installed on the inner side of the supporting stabilizing frame 1, the top stabilizing frame 10 is fixedly installed on the inner surface of the rotating downward pressure plate 8, and the outer surface of the rotating downward pressure plate 8 is installed with an auxiliary extension rod 15, the left and right sides of the supporting stabilizing frame 1 are provided with a curved surface limiting rotation groove 13, and the auxiliary extension rod 15 performs limited circumferential sliding along the inside of the curved surface limiting rotation groove 13, and the left and right sides of the inside of the supporting stabilizing frame 1 are provided with a top downward pressure spring 14, as shown in FIG. Figure 7 As shown, the downward rotation trajectory of the rotating lower pressure plate 8 conflicts with the top of the top downward pressure spring 14. The rotating lower pressure plate 8, the top stabilizing frame 10, the top downward pressure spring 14 and the auxiliary extension rod 15 are designed as an integrated whole, and the rotation trajectory of the top stabilizing frame 10 corresponds to the installation position of the workpiece placement frame 4. The rotating lower pressure plate 8, the top stabilizing frame 10 and the top downward pressure spring 14 are installed in two groups symmetrically about the center point of the supporting stabilizing frame 1, and the top lower surface of the rotating lower pressure plate 8 contacts the upper end of the top downward pressure spring 14 to form an elastic structure, the inner surface of the curved limit rotation groove 13 contacts the outer surface of the auxiliary extension rod 15 to form a sliding structure, and the end of the top stabilizing frame 10 is rotatably installed on the inner surface of the rotating lower pressure plate 8, and the installation position of the rotating lower pressure plate 8 is installed through the inside of the inner groove 9, and the inward movement trajectory of the stabilizing plates 3 on both sides will conflict with the upper end inclined surface of the rotating lower pressure plate 8.

[0025] When the two side stabilizing plates 3 perform lateral sliding movement, the interfering inner grooves 9 opened on the outer surfaces of the left and right ends of the two side stabilizing plates 3 will pass through the outside of the rotating lower pressing plate 8 and slide horizontally, and will interfere with the upper end of the rotating lower pressing plate 8 during the movement of the interfering inner grooves 9. Since the upper end of the rotating lower pressing plate 8 is designed as an inclined surface, and the outer center position of the rotating lower pressing plate 8 is rotatably mounted on the inner surface of the supporting stabilizing frame 1, when the rotating lower pressing plate 8 is interfered with by the interfering inner grooves 9, the front end of the rotating lower pressing plate 8 will gradually rotate downward with the interference. Figure 8As shown, the downward rotation of the rotating lower pressure plate 8 will synchronously drive the top stabilizing frame 10 fixedly installed on the inner surface until the lower surface of the top stabilizing frame 10 contacts the top of the workpiece, and when the rotating lower pressure plate 8 is rotated downward, it will contact the top of the top downward pressure spring 14 fixedly installed at the corresponding position on the inner surface of the supporting stabilizing frame 1. As the top stabilizing frame 10 contacts the top of the workpiece, the top downward pressure spring 14 will clamp it at a corresponding height according to the thickness of the workpiece. At the same time, as the front end of the rotating lower pressure plate 8 is rotated downward, the end of the rotating lower pressure plate 8 will synchronously rotate the auxiliary extension rod 15 fixedly installed on the outer surface upward, and the rotation of the auxiliary extension rod 15 will be carried out along the curved limit rotation groove 13 opened at the corresponding position on the side of the supporting stabilizing frame 1, so that the use of the equipment is more stable.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A CNC machining tool, comprising a supporting and stabilizing frame (1) and a curved surface limiting rotation groove (13), wherein a clamping and limiting frame (2) is installed inside the supporting and stabilizing frame (1), characterized in that: An engaging transmission mechanism for squeezing the reset squeezing spring (7) is installed inside the clamping limit frame (2); The meshing transmission mechanism includes two side stabilizing plates (3), and the two side stabilizing plates (3) slide laterally along the inside of the clamping limit frame (2). The outer surfaces of the two side stabilizing plates (3) are provided with interfering through inner grooves (9), and the inside of the interfering through inner grooves (9) is provided with a downward stabilizing mechanism for rotating the top stabilizing frame (10).

2. A CNC machining tool according to claim 1, characterized in that: The downward pressure stabilizing mechanism includes a rotating downward pressure plate (8), and the rotating downward pressure plate (8) is rotatably mounted on the inner side of the supporting stabilizing frame (1); the top stabilizing frame (10) is fixedly mounted on the inner surface of the rotating downward pressure plate (8), and an auxiliary extension rod (15) is mounted on the outer surface of the rotating downward pressure plate (8).

3. A CNC machining tool according to claim 2, characterized in that: The left and right side surfaces of the support stabilizing frame (1) are provided with curved limit rotation grooves (13), and the auxiliary extension rod (15) performs limited circumferential sliding along the inside of the curved limit rotation groove (13). Top downward pressure springs (14) are installed on the left and right side surfaces inside the support stabilizing frame (1), and the downward rotation trajectory of the rotating downward pressure plate (8) conflicts with the top of the top downward pressure spring (14).

4. The CNC machining tool according to claim 1, characterized in that: The rotating pressing plate (8), the top stabilizing frame (10), the top pressing spring (14) and the auxiliary extension rod (15) are of an integrated design, and the rotation trajectory of the top stabilizing frame (10) corresponds to the installation position of the workpiece placement frame (4). The rotating pressing plate (8), the top stabilizing frame (10) and the top pressing spring (14) are installed in two groups symmetrically about the center point of the supporting stabilizing frame (1), and the top lower surface of the rotating pressing plate (8) contacts the upper end of the top pressing spring (14) to form an elastic structure.

5. The CNC machining tool according to claim 4, characterized in that: The inner surface of the curved limit rotation groove (13) contacts the outer surface of the auxiliary extension rod (15) to form a sliding structure, and the end of the top stabilizing frame (10) is rotatably mounted on the inner surface of the rotating lower pressure plate (8). The installation position of the rotating lower pressure plate (8) is installed through the inside of the inner groove (9), and the inward movement trajectory of the stabilizing plates (3) on both sides will conflict with the upper end inclined surface of the rotating lower pressure plate (8).

6. The CNC machining tool according to claim 1, characterized in that: A workpiece placement rack (4) is installed on the inner surface of the support stabilizing frame (1), and the installation position of the workpiece placement rack (4) corresponds to the internal movement trajectory of the two sets of stabilizing plates (3) on both sides. A meshing gear rod (11) is installed inside the support stabilizing frame (1), and side extension racks (12) are installed on the sides of the stabilizing plates (3) on both sides.

7. The CNC machining tool according to claim 6, characterized in that: The meshing gear rod (11) and the lateral extension rack (12) are meshed with each other, and two groups of stabilizing plates (3) and lateral extension racks (12) are symmetrically installed about the center point of the supporting stabilizing frame (1). The left and right groups of lateral extension racks (12) are symmetrically installed in an upper and lower manner, and oblique connecting rods (5) are installed on the backs of the stabilizing plates (3) on both sides.

8. The CNC machining tool according to claim 7, characterized in that: A vertical retractable frame (6) is installed on the inner bottom surface of the supporting stabilizing frame (1), and the end of the oblique connecting rod (5) performs limited vertical sliding along the inside of the vertical retractable frame (6), and the end of the reset extrusion spring (7) is fixedly installed inside the vertical retractable frame (6), and the front end of the reset extrusion spring (7) contacts the back side of the oblique connecting rod (5).

9. The CNC machining tool according to claim 8, characterized in that: The oblique connecting rod (5), the vertical retracting frame (6) and the return extrusion spring (7) are symmetrically installed in two groups about the center point of the two side stabilizing plates (3), and the top of the oblique connecting rod (5) slides vertically along the back surface of the two side stabilizing plates (3). The meshing gear rod (11) is installed transversely through the interior of the supporting stabilizing frame (1), and the inner surface of the clamping limit frame (2) contacts the outer surface of the lower end of the two side stabilizing plates (3) to form a sliding structure.

10. The CNC machining tool according to claim 9, characterized in that: The outer surface of the end of the inclined connecting rod (5) contacts the inner surface of the vertical retracting frame (6) to form a sliding structure, and the outer surface of the back of the inclined connecting rod (5) contacts the top of the return extrusion spring (7) to form an elastic structure, the outer surface of the meshing gear rod (11) contacts the inner surface of the lateral extension rack (12) to form a meshing structure, and the meshing gear rod (11) is fixed to the outside of the stabilizing plates (3) on both sides through the end of the lateral extension rack (12) to form a transmission structure.

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