Clamping mechanism for CNC machine tool

Abstract

The utility model relates to the technical field of machine tool mechanisms, in particular to a clamping mechanism for a CNC machine tool, which comprises a mounting seat, a clamping assembly and a mounting assembly, the mounting assembly comprises a lower pressing plate and a T-shaped groove block, the bottom surface of the mounting seat is provided with a containing groove matched with the lower pressing plate, the lower pressing plate is movably arranged in the containing groove, and the T-shaped groove block is arranged in the containing groove. The T-shaped groove block is arranged below the mounting base, a control guide rod is arranged on the top face of the T-shaped groove block, an avoiding hole is formed in the top face of the mounting base, guide holes matched with the control guide rod are formed in the four corners of the lower pressing block, a control column is arranged on the top face of the lower pressing block, a threaded hole is formed in the middle of the top face of the control column, and an adjusting bolt is in threaded connection with the interior of the threaded hole. Compared with a conventional T-shaped block for installation, the control guide rod, the T-shaped groove block, the lower pressing plate and the adjusting bolt are arranged, the position of the T-shaped block does not need to be frequently moved, meanwhile, the T-shaped block is located below the installation base, and compared with a conventional installation mode that a pressing plate and a nut are used, the work occupied area is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machine tool mechanism technology, and in particular to a clamping mechanism for CNC machine tools. Background Technology

[0002] A CNC machine tool (Computer Numerical Control Machine Tool) is an automated machine tool equipped with a program control system. This control system logically processes programs with control codes or other symbolic instructions, decodes them, represents them with coded numbers, and inputs them into the CNC device via an information carrier. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings. It can efficiently and accurately complete machining tasks such as cutting, carving, and drilling of materials such as metal, plastic, and wood.

[0003] The machine tool clamping mechanism is an important component in CNC machine tools. It is an essential part used to fix the workpiece during machining. Its performance directly affects the machining accuracy and efficiency. When the clamping mechanism is installed on the worktable, it usually adopts the T-slot installation method. By using the T-slot on the machine tool worktable or base, in conjunction with T-bolts, nuts and pressure plates, the clamping mechanism is fastened. The structure is simple and the cost is also low.

[0004] While existing clamping mechanisms using the T-slot installation method are simple and robust, their installation and adjustment efficiency is low. Adjusting the position of the clamping mechanism requires loosening the nut, moving the T-block, realigning and locking it, or moving the T-block to the edge of the worktable and then removing it and placing it in another T-slot on the worktable for positioning and locking. This operation is cumbersome and inefficient. Therefore, the inventors have proposed a clamping mechanism for CNC machine tools to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this utility model is achieved through the following method: A clamping mechanism for CNC machine tools includes a mounting base, a clamping assembly, and a mounting assembly. The clamping assembly is disposed on the top surface of the mounting base, and the mounting assembly is connected to the mounting base. The mounting assembly includes a lower pressure plate and T-shaped slot blocks. The bottom surface of the mounting base has a receiving groove that matches the lower pressure plate. The lower pressure plate is movably disposed in the receiving groove. The T-shaped slot blocks are distributed below the four corners of the mounting base. The top surface of the T-shaped slot blocks has control guide rods, and the top of the control guide rods extends towards the top surface of the mounting base. The top surface near the control guide rod has a clearance hole that matches the control guide rod. The clearance hole communicates with the receiving groove. The four corners of the lower pressure block have guide holes that match the control guide rod. The top surface of the lower pressure block has a control post. The center of the top surface of the control post has a threaded hole. An adjusting bolt is threaded into the threaded hole. The adjusting bolt is rotatably connected to the clamping assembly. The top of the control guide rod has a swing block. The top surface of the mounting base near the swing block has a swing groove that matches the swing block. The short side dimension of the T-shaped groove block matches the neck spacing dimension of the T-shaped groove on the worktable.

[0006] In a further embodiment of the above description, the top surface of the control guide rod is provided with a torsion disk, the bottom surface of the torsion disk is fixedly connected to the top surface of the control guide rod, the swing groove is connected to the clearance hole, and both ends of the T-shaped slot block adopt a rounded corner structure; the torsion disk facilitates the operator to rotate the control guide rod, and the rounded corner structure of the T-shaped slot block facilitates the operator to control the T-shaped slot block to rotate within the T-shaped slot on the worktable.

[0007] In a further embodiment of the above description, the clamping assembly includes a fixed base, a column, and a movable platform. The fixed base is installed opposite to each other at both ends of the top surface of the mounting base. The column is fixedly installed between the fixed bases. The bottom surface of the column is provided with a movable groove that matches the control column. The top of the column is provided with a mounting plate. The top surface of the mounting plate is provided with a rotating groove that matches the adjusting bolt. The rotating groove communicates with the movable groove. A rotating bearing is provided in the rotating groove near the adjusting bolt. The rotating bearing is used to rotate with the adjusting bolt.

[0008] In a further embodiment of the above description, guide rails are distributed on both sides of the top surface of the fixed base. The movable platform is movably mounted on the top surface of the fixed base and cooperates with the guide rails. A positioning plate is provided at one end of the top surface of the fixed base. A torsion bolt is rotatably mounted on the end of the positioning plate away from the fixed base. The screw of the torsion bolt extends through the movable platform toward the column. The screw of the torsion bolt is rotatably connected to the column. The torsion bolt is threadedly engaged with the movable platform. The torsion bolt is used to control the distance between the movable platform and the column.

[0009] In a further embodiment of the above description, a movable clamp is provided above the movable table. The top surface of the movable table is fixedly connected to the movable clamp via a connecting frame. Fixed clamps are fixedly installed at both ends of the mounting table near the movable clamp. The fixed vise and the movable vise can clamp the workpiece between them.

[0010] In a further embodiment of the above description, both ends of the mounting platform bottom surface are provided with support side plates, both ends of which extend toward the direction of the movable clamp, and the top surface of the support side plates is in contact with the bottom surface of the movable clamp. The top of the platform column is provided with a central support plate near the movable clamp, and the top surface of the central support plate is in contact with the bottom surface of the movable clamp. The central support plate and the support side plates are used to provide support when the workpiece is protected.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By controlling the guide rod, T-shaped slot block, lower pressure plate, and adjusting bolt, during installation, it is only necessary to rotate the control guide rod to drive the T-shaped slot block to rotate. After rotation, since the short side dimension of the T-shaped slot block matches the neck spacing dimension of the T-shaped slot on the worktable, the T-shaped slot block can be placed into the T-shaped slot. Then, the control guide rod is rotated again to offset the T-shaped slot block from the T-shaped slot. Then, the adjusting bolt can be rotated. The adjusting bolt drives the lower pressure plate to move downward through the control column, and the lower pressure plate is pressed down simultaneously with the downward movement. The plate contacts the top surface of the workbench. After contact, the adjusting bolt is rotated, which drives the lower pressure plate to move downward. The lower pressure plate pushes the mounting base upward. At the same time, the mounting base drives the T-slot block upward through the control guide rod, thereby pressing the neck of the T-slot and achieving the installation effect. Compared with the conventional T-block installation, this application does not require frequent movement of the T-block on the workbench during installation. At the same time, the T-block is located below the mounting base, which reduces the area occupied by the workbench compared with the conventional installation method using pressure plates and nuts. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a clamping mechanism for a CNC machine tool according to the present invention;

[0013] Figure 2 This is a three-dimensional structural schematic diagram of a clamping mechanism for a CNC machine tool from another perspective.

[0014] Figure 3 This is an exploded structural diagram of a clamping mechanism for a CNC machine tool according to the present invention;

[0015] Figure 4 This is an exploded structural diagram of a clamping mechanism for a CNC machine tool according to another perspective of the present invention;

[0016] Figure 5This is a schematic diagram of the internal structure of a clamping mechanism for a CNC machine tool according to the present invention;

[0017] Figure 6 This is a utility model Figure 3 A partially enlarged schematic diagram of structure A in the middle;

[0018] Figure 7 This is a utility model Figure 3 A partially enlarged schematic diagram of structure B in the middle;

[0019] Figure 8 This is a schematic diagram illustrating the installation effect of a clamping mechanism for a CNC machine tool according to this utility model.

[0020] Figure 9 This is a schematic diagram showing the installation effect of a clamping mechanism for a CNC machine tool from another perspective.

[0021] In the diagram: 1-mounting base, 2-lower pressure plate, 3-T-shaped groove block, 4-accommodating groove, 5-control guide rod;

[0022] 6-Allowance hole, 7-Guide hole, 8-Control column, 9-Threaded hole, 10-Central support plate, 11-Swing block;

[0023] 12-Swing groove, 13-Twist disc, 14-Fixed base, 15-Column, 16-Moving platform, 17-Moving groove;

[0024] 18-Mounting plate, 19-Rotating groove, 20-Rotating bearing, 21-Guide rail, 22-Positioning plate;

[0025] 23-Tightening bolt, 24-Modible clamp, 25-Connecting bracket, 26-Fixed clamp, 27-Supporting side plate;

[0026] 28 - Adjusting bolt. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] For this embodiment, please refer to Figures 1-9The present invention relates to a clamping mechanism for a CNC machine tool, comprising a mounting base 1, a clamping assembly, and a mounting assembly. The clamping assembly is disposed on the top surface of the mounting base 1, and the mounting assembly is connected to the mounting base 1. The mounting assembly includes a lower pressure plate 2 and T-shaped slot blocks 3. The bottom surface of the mounting base 1 has a receiving groove 4 that matches the lower pressure plate 2, and the lower pressure plate 2 is movably disposed within the receiving groove 4. The T-shaped slot blocks 3 are distributed below the four corners of the mounting base 1, and the top surface of the T-shaped slot blocks 3 is provided with control guide rods 5. The top of the control guide rods 5 extends toward the top surface of the mounting base 1. The top surface of the mounting base 1 is provided with a clearance hole 6 that matches the control guide rod 5 near the control guide rod 5. The clearance hole 6 communicates with the receiving groove 4. The four corners of the lower pressure block are provided with guide holes 7 that match the control guide rod 5. The top surface of the lower pressure block is provided with a control post 8. The center of the top surface of the control post 8 is provided with a threaded hole 9. The threaded hole 9 is internally threaded with an adjusting bolt 28. The adjusting bolt 28 is rotatably connected to the clamping assembly. The top of the control guide rod 5 is provided with a swing block 11. The top surface of the mounting base 1 is provided with a swing groove 12 that matches the swing block 11 near the swing block 11.

[0029] It should be noted that the short side dimension of T-slot block 3 matches the neck spacing dimension of the T-slot on the worktable; no specific numerical limit is specified here. (See attached...) Figure 8-9 This is for illustrative purposes only and is not intended to limit the scope of the invention. Those skilled in the art should be able to make reasonable selections and designs based on the actual situation. The goal is simply to ensure that the T-shaped slot 3 can be placed into the T-shaped slot after it is rotated.

[0030] Specifically, during installation, the control guide rod 5 is driven by rotating the torsion disc 13 to rotate the T-shaped slot block 3 until the swing block 11 contacts the other end of the swing groove 12, that is, the long side of the T-shaped slot block 3 is aligned with the neck of the T-shaped groove on the worktable. Then, the T-shaped slot block 3 is inserted into the T-shaped groove, and the torsion disc 13 is rotated again to reset the T-shaped slot block 3, so that the long side of the T-shaped slot block 3 is offset from the neck of the T-shaped groove.

[0031] The top surface of the control guide rod 5 is provided with a torsion disk 13, the bottom surface of the torsion disk 13 is fixedly connected to the top surface of the control guide rod 5, the swing groove 12 is connected to the clearance hole 6, and both ends of the T-shaped groove block 3 adopt a rounded corner structure.

[0032] The clamping assembly includes a fixed base 14, a column 15, and a movable platform 16. The fixed base 14 is installed opposite to each other at both ends of the top surface of the mounting base 1. The column 15 is fixedly installed between the fixed bases 14. The bottom surface of the column 15 is provided with a movable groove 17 that matches the control column 8. The top of the column 15 is provided with a mounting plate 18. The top surface of the mounting plate 18 is provided with a rotating groove 19 that matches the adjusting bolt 28. The rotating groove 19 communicates with the movable groove 17. A rotating bearing 20 is provided in the rotating groove 19 near the adjusting bolt 28.

[0033] Guide rails 21 are distributed on both sides of the top surface of the fixed base 14. The movable platform 16 is movably installed on the top surface of the fixed base 14 and cooperates with the guide rails 21. A positioning plate 22 is provided at one end of the top surface of the fixed base 14. A torsion bolt 23 is rotatably installed at the end of the positioning plate 22 away from the fixed base 14. The screw of the torsion bolt 23 extends through the movable platform 16 toward the column 15. The screw of the torsion bolt 23 is rotatably connected to the column 15. The torsion bolt 23 is threadedly engaged with the movable platform 16.

[0034] The movable platform 16 is provided with a movable clamp 24 above it. The top surface of the movable platform 16 is fixedly connected to the movable clamp 24 through a connecting frame 25. Fixed clamps 26 are fixedly installed at both ends of the mounting platform near the movable clamp 24.

[0035] Both ends of the mounting platform bottom surface are provided with support side plates 27. The two ends of the support side plates 27 extend toward the movable clamp 24, and the top surface of the support side plates 27 is in contact with the bottom surface of the movable clamp 24. The top of the column 15 is provided with a middle support plate 10 near the movable clamp 24, and the top surface of the middle support plate 10 is in contact with the bottom surface of the movable clamp 24.

[0036] It should be noted that the connection methods and mating relationships in this application are for illustrative purposes only and are not intended to impose specific limitations. Similarly, no specific limitations are imposed on the friction coefficient, dimensions, and thread pitch between the parts in this application, as long as they can be used normally. Those skilled in the art should be able to make reasonable selections and designs based on the actual situation.

[0037] The installation method of this utility model is as follows: Rotate the torsion disc 13 to drive the control guide rod 5 and the T-shaped slot block 3 to rotate 90°, align the T-shaped slot block 3 with the neck of the T-shaped slot on the workbench, insert the T-shaped slot block 3 into the T-shaped slot, rotate the torsion disc 13 again to reset the T-shaped slot block 3, and offset the long side of the T-shaped slot block 3 from the neck of the T-shaped slot. Then rotate the adjusting bolt 28. Through the thread engagement of the screw of the adjusting bolt 28 with the threaded hole 9, when the adjusting bolt rotates, it drives the control column 8 and the lower pressure plate 2 to press down, applying pressure to the upper surface of the workbench and lifting the mounting base 1. At the same time as lifting, the mounting base 1 drives the T-shaped slot block 3 to press against the neck of the T-shaped slot through the control guide rod 5, thus realizing the installation.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Furthermore, in the description of the embodiments of this utility model, 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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 utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A clamping mechanism for a CNC machine tool, comprising a mounting base, a clamping assembly, and a mounting assembly, wherein the clamping assembly is disposed on the top surface of the mounting base, and the mounting assembly is connected to the mounting base, characterized in that: The mounting assembly includes a lower pressure plate and T-shaped slot blocks. The bottom surface of the mounting base has a receiving groove that matches the lower pressure plate. The lower pressure plate is movably disposed in the receiving groove. The T-shaped slot blocks are distributed below the four corners of the mounting base. The top surface of the T-shaped slot blocks has a control guide rod. The top of the control guide rod extends towards the top surface of the mounting base. The top surface of the mounting base near the control guide rod has a clearance hole that matches the control guide rod. The clearance hole communicates with the receiving groove. The four corners of the lower pressure block have guide holes that match the control guide rod. The top surface of the lower pressure block has a control post. The center of the top surface of the control post has a threaded hole. An adjusting bolt is threaded into the threaded hole. The adjusting bolt is rotatably connected to the clamping assembly. The top of the control guide rod has a swing block. The top surface of the mounting base near the swing block has a swing groove that matches the swing block.

2. The clamping mechanism for a CNC machine tool according to claim 1, characterized in that: The top surface of the control guide rod is provided with a torsion disk, the bottom surface of the torsion disk is fixedly connected to the top surface of the control guide rod, the swing groove is connected to the clearance hole, and both ends of the T-shaped groove block adopt a rounded corner structure.

3. The clamping mechanism for a CNC machine tool according to claim 1, characterized in that: The clamping assembly includes a fixed base, a column, and a movable platform. The fixed base is installed opposite to each other at both ends of the top surface of the mounting base. The column is fixedly installed between the fixed bases. The bottom surface of the column is provided with a movable groove that matches the control column. The top of the column is provided with a mounting plate. The top surface of the mounting plate is provided with a rotating groove that matches the adjusting bolt. The rotating groove is connected to the movable groove. A rotating bearing is provided in the rotating groove near the adjusting bolt.

4. The clamping mechanism for a CNC machine tool according to claim 3, characterized in that: Guide rails are distributed on both sides of the top surface of the fixed base. The movable platform is movably installed on the top surface of the fixed base and cooperates with the guide rails. A positioning plate is provided at one end of the top surface of the fixed base. A torsion bolt is rotatably installed at the end of the positioning plate away from the fixed base. The screw of the torsion bolt extends through the movable platform toward the column. The screw of the torsion bolt is rotatably connected to the column. The torsion bolt is threadedly engaged with the movable platform.

5. A clamping mechanism for a CNC machine tool according to claim 4, characterized in that: The movable platform is equipped with movable clamps above it. The top surface of the movable platform is fixedly connected to the movable clamps via a connecting frame. Fixed clamps are fixedly installed at both ends of the mounting platform near the movable clamps.

6. A clamping mechanism for a CNC machine tool according to claim 5, characterized in that: Both ends of the mounting platform bottom surface are provided with support side plates, both ends of which extend toward the direction of the movable clamp, and the top surface of the support side plate is in contact with the bottom surface of the movable clamp. The top of the platform column is provided with a middle support plate near the movable clamp, and the top surface of the middle support plate is in contact with the bottom surface of the movable clamp.

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