Fixture fixing mechanism of numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool clamp fixing mechanism which comprises a bottom plate, the two sides of the front end and the rear end of the bottom plate are both fixedly connected with fixing blocks, the top of the bottom plate is fixedly connected with two sets of fixing bases, the two sets of fixing bases are both fixedly connected with hydraulic cylinders, and piston rods of the two sets of hydraulic cylinders are both fixedly connected with connecting bases. The clamp comprises two sets of connecting bases, clamp bases are inserted into the two sets of connecting bases, clamp heads are fixedly connected to the two sets of clamp bases, protective pads are fixedly connected to the two sets of clamp heads, and connecting assemblies are arranged between the two sets of connecting bases and the corresponding clamp bases. The connecting seat and the clamp seat can be quickly mounted and dismounted, so that the clamp head can be easily replaced to adapt to workpieces with different shapes and sizes, the flexibility and adaptability of a production line are improved, the time for replacing the clamp can be greatly shortened, the downtime of the production line is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tool processing equipment, in particular to a clamp fixing mechanism for a numerical control machine tool. Background Art

[0002] A CNC machine tool is a machine tool that uses a computer control system to accurately control the machining process. It can automatically perform pre-programmed machining operations and has the characteristics of high precision, high efficiency and flexibility. CNC machine tools are usually composed of mechanical structures, CNC systems, drive systems and sensors. By inputting machining programs and parameters, CNC machine tools can complete various complex machining tasks, such as milling, turning, drilling, etc. CNC machine tools generally need to use a fixture to clamp the workpiece during machining. The fixture is a device used to clamp the workpiece on the CNC machine tool for machining. It can be controlled by the CNC system to automatically clamp and release the workpiece to achieve an efficient and precise machining process.

[0003] When CNC machine tools are clamping and fixing, the workpiece is generally clamped by two automatically controlled clamps. When it comes to workpieces of different diameters, the corresponding clamp heads need to be replaced to ensure uniform clamping force and workpiece processing stability. At the same time, the clamp heads also need to be disassembled and repaired regularly. The current CNC machine tool clamp fixing mechanism usually fixes the clamp bodies with bolts. Although this fixing method is stable, it will waste a long time during disassembly, thereby extending the downtime of the equipment and causing a decrease in production efficiency. At the same time, when the clamp head clamps the workpiece, the outer wall of the workpiece will be damaged due to excessive clamping force, resulting in poor use effect. Utility Model Content

[0004] The purpose of the utility model is to provide a CNC machine tool fixture fixing mechanism to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A CNC machine tool fixture fixing mechanism, including a bottom plate, both front and rear ends of the bottom plate are fixedly connected with fixing blocks, the top of the bottom plate is fixedly connected with two sets of fixing seats, the two sets of fixing seats are fixedly connected with hydraulic cylinders, and the piston rods of the two sets of hydraulic cylinders are fixedly connected with connecting seats;

[0007] The two groups of connecting seats are both provided with clamp seats, the two groups of clamp seats are both fixedly connected with clamp heads, the two groups of clamp heads are both fixedly connected with protective pads, and connecting components are provided between the two groups of connecting seats and the corresponding clamp seats.

[0008] In a preferred embodiment of the present invention, a plurality of the fixing blocks are provided with fixing holes for installing bolts.

[0009] In a preferred embodiment of the present invention, the two groups of clamp seats and the corresponding clamp heads are an integrated structure.

[0010] In a preferred embodiment of the present invention, both groups of protective pads are made of polyurethane.

[0011] In a preferred embodiment of the present utility model, the connecting assembly includes connecting rods slidably connected to both sides of the connecting seat, a limiting slide groove is opened on the top of the connecting seat, one end of the two connecting rods is fixedly connected to a connecting frame, the two connecting frames are slidably connected to the center of the limiting slide groove, the two connecting frames are fixedly connected to springs, the other ends of the two springs are connected to the connecting seat, and the tops of the two connecting frames are fixedly connected to pull plates.

[0012] In a preferred embodiment of the present invention, a slot corresponding to the clamp seat is formed on the front end surface of the connecting seat, and the clamp seat is installed at the center of the slot.

[0013] In a preferred embodiment of the present invention, corresponding installation grooves are provided on both sides of the slot and the fixture seat, and the other ends of the two connecting rods pass through the centers of the corresponding installation grooves.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0015] The difference from the prior art lies in that: through the setting of the connecting component, the connecting seat and the clamp seat can be quickly installed and disassembled, so that the clamp head can be easily replaced to adapt to workpieces of different shapes and sizes, thereby improving the flexibility and adaptability of the production line, and can greatly shorten the time for replacing the clamp, reduce the downtime of the production line, improve production efficiency, make the maintenance of the clamp more convenient, and can quickly replace damaged or repaired parts, reducing maintenance time and maintenance costs. At the same time, it has strong connection stability, thereby improving operational safety and reducing the probability of accidents. Through the setting of the protective pad, the damage or scratches caused by the clamp to the workpiece surface can be reduced. For workpieces with sensitive surfaces or high surface quality requirements, it can effectively protect their surfaces from damage. It can also provide additional friction to prevent the workpiece from sliding or shifting during the clamping process, thereby maintaining the stability and positioning accuracy of the workpiece, while reducing the possibility of workpiece deformation. For soft or easily deformed workpieces, it can effectively maintain their shape and size stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is an overall appearance diagram of a fixture fixing mechanism for a CNC machine tool;

[0018] Figure 2 It is a top view of a fixture fixing mechanism of a CNC machine tool;

[0019] Figure 3 It is a structural schematic diagram of a connecting component in a fixture fixing mechanism of a CNC machine tool;

[0020] Figure 4 It is a front view of a connecting component in a fixture fixing mechanism of a CNC machine tool;

[0021] Figure 5 The present invention is a structural schematic diagram of a fixture head in a fixture fixing mechanism of a CNC machine tool.

[0022] In the figure: 1, bottom plate; 2, fixing block; 201, fixing hole; 3, fixing seat; 4, hydraulic cylinder; 5, connecting seat; 6, clamp seat; 7, clamp head; 8, protective pad; 9, connecting assembly; 901, connecting rod; 902, limiting slide groove; 903, connecting frame; 904, spring; 905, pull plate. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] Please refer to Figure 1-5A CNC machine tool fixture fixing mechanism comprises a base plate 1, and a fixing block 2 is fixedly connected to both sides of the front and rear ends of the base plate 1, and a plurality of fixing blocks 2 are provided with fixing holes 201 for installing bolts; so that the fixing block 2 can be firmly fixed in the required position by a plurality of bolts to ensure that it will not move or loosen during use, thereby improving the stability and reliability of the system; through a plurality of fixing holes 201, the connection points between the fixing block 2 and other components can be increased, thereby enhancing the stability and bearing capacity of the entire structure; two groups of fixing seats 3 are fixedly connected to the top of the base plate 1, and hydraulic cylinders 4 are fixedly connected to the two groups of fixing seats 3, and connecting seats 5 are fixedly connected to the piston rods of the two groups of hydraulic cylinders 4; fixture seats 6 are inserted into the two groups of connecting seats 5, and fixture heads are fixedly connected to the two groups of fixture seats 6 7. The two groups of clamp seats 6 and the corresponding clamp heads 7 are all of an integrated structure; this can ensure that the connection between the clamp seats 6 and the clamp heads 7 is more secure, reducing the possibility of failure of the clamp heads 7 due to looseness or deformation of the connection parts, thereby enhancing the stability and reliability of the clamp heads 7, increasing the overall rigidity, reducing deformation and vibration, and improving the processing accuracy and quality. At the same time, it simplifies the manufacturing and installation processes and improves production efficiency. The two groups of clamp heads 7 are fixedly connected with protective pads 8, and the two groups of protective pads 8 are made of polyurethane as raw material; polyurethane has good wear resistance, can effectively resist friction and wear, and extend the service life of the protective pads 8. Polyurethane has good resistance to many chemicals, can maintain stability in harsh working environments, and is not easily corroded or damaged.

[0025] like Figure 3 and Figure 4As shown, a connecting assembly 9 is provided between the two groups of connecting seats 5 and the corresponding clamp seats 6, and the connecting assembly 9 includes a connecting rod 901 slidably connected to the two sides of the connecting seat 5, and a slot corresponding to the clamp seat 6 is opened on the front end surface of the connecting seat 5, and the clamp seat 6 is installed in the center of the slot; the center position of the slot can ensure that the clamp seat 6 is accurately positioned and installed, so that the alignment between the clamp seat 6 and the connecting seat 5 is more precise, thereby ensuring the accuracy and stability of workpiece clamping, which can effectively improve the stability of the clamp head 7, reduce processing errors and workpiece damage caused by the offset or shaking of the clamp seat 6, and facilitate subsequent limit fixing operations while completing rapid positioning. Corresponding installation slots are opened on both sides of the slot and the clamp seat 6, and the other ends of the two connecting rods 901 pass through the center of the corresponding installation slot; it can be achieved through the two connecting rods 901 The connecting seat 5 and the clamp seat 6 are fixed to each other, so that they have strong connection stability, ensuring the clamping effect of the clamp head 7. A limited slide groove 902 is set on the top of the connecting seat 5, and one end of the two connecting rods 901 is fixedly connected to a connecting frame 903, and the two connecting frames 903 are slidably connected to the center of the limited slide groove 902. The two connecting frames 903 are fixedly connected with springs 904, and the other ends of the two springs 904 are connected to the connecting seat 5. The tops of the two connecting frames 903 are fixedly connected with pull plates 905; the staff only needs to open the two pull plates 905 with one hand, thereby driving the two connecting frames 903 to slide in the center of the limited slide groove 902, and the two connecting rods 901 slide accordingly, leaving the center of the clamp seat 6, and then directly take out the clamp seat 6 and the clamp head 7. The disassembly operation is relatively simple compared to the traditional fixing method.

[0026] The working principle of the utility model is: first, the fixing block 2 is installed on the equipment by bolts, and then the workpiece is placed between the two groups of clamp heads 7, and then the two groups of hydraulic cylinders 4 are started. The piston rods of the two groups of hydraulic cylinders 4 drive the two groups of connecting seats 5 to move, and then the clamp head 7 moves accordingly to clamp the workpiece located in the center. The setting of the two groups of clamp heads 7 makes the clamping more balanced and stable, and has strong stability. After the workpiece is clamped, its end can be processed, and the operation when the other end is replaced is the same. When it is necessary to clamp workpieces of different sizes or to maintain the clamp head 7, the staff only needs to open the two pull plates 905 with one hand, and then drive the two connecting frames 903 to slide in the center of the limiting slide groove 902, and the two connecting rods 901 slide accordingly, leaving the center of the clamp seat 6, and then directly take out the clamp seat 6 and the clamp head 7. The disassembly operation is relatively simple compared with the traditional fixing method, saving manpower, and the installation operation is the same.

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

Claims

1. A fixture fixing mechanism for a numerically controlled machine tool, comprising a base plate (1), characterized in that: The front and rear ends of the bottom plate (1) are both fixedly connected to fixed blocks (2); the top of the bottom plate (1) is fixedly connected to two groups of fixed seats (3); the two groups of fixed seats (3) are both fixedly connected to hydraulic cylinders (4); and the piston rods of the two groups of hydraulic cylinders (4) are both fixedly connected to connecting seats (5); The two groups of connecting seats (5) are both provided with clamp seats (6), the two groups of clamp seats (6) are both fixedly connected with clamp heads (7), the two groups of clamp heads (7) are both fixedly connected with protective pads (8), and connecting components (9) are provided between the two groups of connecting seats (5) and the corresponding clamp seats (6).

2. A CNC machine tool fixture fixing mechanism according to claim 1, characterized in that: A plurality of the fixing blocks (2) are each provided with fixing holes (201) for installing bolts.

3. A CNC machine tool fixture fixing mechanism according to claim 1, characterized in that: The two groups of clamp seats (6) and the corresponding clamp heads (7) are an integrated structure.

4. A CNC machine tool fixture fixing mechanism according to claim 1, characterized in that: The two groups of protective pads (8) are both made of polyurethane as raw material.

5. The CNC machine tool fixture fixing mechanism according to claim 1, characterized in that: The connecting assembly (9) comprises connecting rods (901) slidably connected to both sides of the connecting seat (5); a limiting sliding groove (902) is provided on the top of the connecting seat (5); one end of each of the two connecting rods (901) is fixedly connected to a connecting frame (903); each of the two connecting frames (903) is slidably connected to the center of the limiting sliding groove (902); each of the two connecting frames (903) is fixedly connected to a spring (904); the other ends of each of the two springs (904) are connected to the connecting seat (5); and each of the tops of the two connecting frames (903) is fixedly connected to a pull plate (905).

6. A CNC machine tool fixture fixing mechanism according to claim 5, characterized in that: The front end surface of the connecting seat (5) is provided with a slot corresponding to the clamp seat (6), and the clamp seat (6) is installed at the center of the slot.

7. A CNC machine tool fixture fixing mechanism according to claim 6, characterized in that: Corresponding installation grooves are provided on both sides of the slot and on the clamp seat (6), and the other ends of the two connecting rods (901) pass through the center of the corresponding installation grooves.

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