Workpiece clamping and positioning integrated device of numerical control machine tool

Abstract

This utility model relates to the technical field of clamping and positioning devices, and in particular to an integrated clamping and positioning device for CNC machine tools. It includes a machine base, with an air pump and an electric telescopic rod fixedly connected to the top of the machine base. A hose is fixedly connected to the left side of the air pump. A dovetail guide groove is provided at the upper end of the machine base. A positioning component is fixedly connected to one side of the electric telescopic rod. A clamping component is slidably connected to the inner side of the positioning component. The positioning component includes a movable shell, with a dovetail slider fixedly connected to the bottom of the movable shell. A first permanent magnet block is fixedly connected to the inner side of the movable shell, and an embedded rail is fixedly connected to the inner side of the movable shell. The clamping component includes a second permanent magnet block, with a movable arm fixedly connected to one side of the second permanent magnet block. Limiting grooves are provided at both the left and right ends of the movable arm. In this utility model, the magnetic repulsion positioning device lightly touches and repositions the metal shell, significantly reducing workpiece deformation caused by excessive clamping force and improving the finished product qualification rate.

Description

Technical Field

[0001] This utility model relates to the technical field of clamping and positioning devices, specifically an integrated device for clamping and positioning CNC machine tool workpieces. Background Technology

[0002] The integrated workpiece clamping and positioning device for CNC machine tools is an integrated mechanical device that organically combines the functions of workpiece positioning and clamping. Its main function is to ensure that the workpiece maintains an accurate positional relationship during the machining process through high-precision positioning elements, while using clamping mechanisms (such as pneumatic, hydraulic or mechanical clamping devices) to firmly fix the workpiece and prevent workpiece displacement or vibration caused by cutting forces during machining, thereby ensuring machining accuracy and efficiency. It is widely used in the workpiece clamping process of various CNC machine tools and is an important auxiliary equipment for achieving automated and efficient machining.

[0003] When machining metal shell-type workpieces on CNC machine tools, ensuring stable clamping and positioning of the workpiece is crucial. These workpieces have a hollow internal structure with relatively thin walls and relatively weak structural rigidity. During clamping, if the applied clamping force is too large or the clamping position is improperly selected, the workpiece is prone to deformation. This deformation not only damages the original dimensional accuracy of the workpiece but also causes changes in the relative position between the tool and the workpiece during machining, thereby affecting the surface finish and dimensional accuracy, ultimately resulting in the finished product failing to meet design requirements. Therefore, to address the above problems, an integrated workpiece clamping and positioning device for CNC machine tools is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated device for clamping and positioning workpieces on CNC machine tools, so as to solve the problem that when machining metal shell workpieces on CNC machine tools, if the clamping force applied is too large or the clamping position is not properly selected, the workpiece is very likely to deform. This deformation will not only destroy the original dimensional accuracy of the workpiece.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A CNC machine tool workpiece clamping and positioning integrated device includes a machine base. An air pump and an electric telescopic rod are fixedly connected to the top of the machine base. A hose is fixedly connected to the left side of the air pump. A dovetail guide groove is formed at the upper end of the machine base. A positioning component is fixedly connected to one side of the electric telescopic rod. A clamping component is slidably connected to the inner side of the positioning component. The positioning component includes a movable shell. A dovetail slider is fixedly connected to the bottom end of the movable shell. A first permanent magnet block is fixedly connected to the inner side of the movable shell. An embedded rail is fixedly connected to the inner side of the movable shell. The clamping component includes a second permanent magnet block. A movable arm is fixedly connected to one side of the second permanent magnet block. Limiting grooves are formed at both the left and right ends of the movable arm. A rack is fixedly connected to the top of the movable arm. A rigid plate is fixedly connected to the end of the movable arm away from the second permanent magnet block. A rubber plate is fixedly connected to one side of the rigid plate. The limiting groove is slidably connected to the outer side of the embedded rail.

[0007] As a further optimization of this utility model, the machine base is equipped with multiple supports at its top, and the air pump and electric telescopic rod are both fixed inside the machine base supports. The electric telescopic rod is multiple in number, and the piston rod of the electric telescopic rod is fixedly connected to one side of the movable shell.

[0008] As a further optimization of this utility model, the inner side of the movable shell is provided with a vertical groove and a folded channel. A solenoid valve is fixedly connected to the inner side of the folded channel. A folded column is slidably connected to the inner side of the folded channel. A toothed plate is fixedly connected to the bottom end of the folded column. The toothed plate is slidably connected to the inner side of the vertical groove. A sealing ring is fixedly connected to the outer side of the folded column. The sealing ring of the folded column fits against the inner side of the folded channel.

[0009] As a further optimization of this utility model, the folded channel is connected to the vertical groove, the vertical groove penetrates the inner side of the movable shell from front to back, and the folded channel penetrates the right end of the movable shell.

[0010] As a further optimization of this utility model, the right side of the movable shell is fixedly connected to the left side of the hose, the hose is provided with multiple branch pipes, the inner side of the hose is connected to the folded channel, and the inner side of the hose is connected to the air inlet of the air pump.

[0011] As a further optimization of this utility model, the toothed plate is provided with teeth at its bottom end, and rail plates are fixedly connected to both sides of the toothed plate. The bottom end of the toothed plate meshes with the rack through the teeth.

[0012] As a further optimization of this utility model, the center of the second permanent magnet block and the center of the first permanent magnet block are on the same horizontal line, the first permanent magnet block and the second permanent magnet block are magnetically repelled, the number of the positioning component and the clamping component are both multiple, and the dovetail slider is slidably connected inside the dovetail guide groove.

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

[0014] In this invention, by using a vacuum pump, a positioning component, and a clamping component, the device achieves slight contact repositioning of metal shell-type workpieces by utilizing magnetic repulsion. This significantly reduces workpiece deformation caused by excessive clamping force, thereby ensuring the dimensional accuracy of the workpiece and the smoothness of the machined surface, improving the quality of finished products, and ensuring the production qualification rate. At the same time, the device can also provide a certain buffer during the clamping process, control the clamping force, and further protect the workpiece from damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the electric telescopic pole structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the positioning component of this utility model;

[0018] Figure 4 This is a schematic diagram of the folded column structure of this practical application;

[0019] Figure 5 This is a schematic diagram of the clamping component structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the movable shell structure of this utility model.

[0021] In the diagram: 1. Machine base; 2. Air pump; 3. Hoses; 4. Dovetail guide groove; 5. Electric telescopic rod;

[0022] 6. Positioning component; 61. Moving shell; 62. Dovetail slider; 63. First permanent magnet block; 64. Folded track; 65. Solenoid valve; 66. Vertical groove; 67. Embedded rail; 68. Folded column; 69. Toothed plate;

[0023] 7. Clamping assembly; 71. Second permanent magnet block; 72. Movable arm; 73. Limiting groove; 74. Rack; 75. Hard plate; 76. Rubber plate. Detailed Implementation

[0024] 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.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Please see Figure 1-6 This utility model provides a technical solution:

[0027] A CNC machine tool workpiece clamping and positioning integrated device includes a machine base 1. An air pump 2 and an electric telescopic rod 5 are fixedly connected to the top of the machine base 1. A hose 3 is fixedly connected to the left side of the air pump 2. A dovetail guide groove 4 is provided on the upper end of the machine base 1. A positioning component 6 is fixedly connected to one side of the electric telescopic rod 5. A clamping component 7 is slidably connected to the inner side of the positioning component 6. The positioning component 6 includes a movable housing 61. A dovetail slider 62 is fixedly connected to the bottom end of the movable housing 61. A first permanent magnet is fixedly connected to the inner side of the movable housing 61. Block 63, the inner side of the movable shell 61 is fixedly connected to the embedded rail 67, the clamping assembly 7 includes a second permanent magnet block 71, a movable arm 72 is fixedly connected to one side of the second permanent magnet block 71, the left and right ends of the movable arm 72 are provided with limiting grooves 73, the top of the movable arm 72 is fixedly connected to a rack 74, the end of the movable arm 72 away from the second permanent magnet block 71 is fixedly connected to a rigid plate 75, a rubber plate 76 is fixedly connected to one side of the rigid plate 75, and the limiting groove 73 is slidably connected to the outside of the embedded rail 67.

[0028] As a further implementation of this solution, multiple supports are fixed at the top of the machine base 1. The air pump 2 and the electric telescopic rod 5 are both fixed inside the supports of the machine base 1. There are multiple electric telescopic rods 5. The piston rod of the electric telescopic rod 5 is fixedly connected to one side of the moving shell 61. Through the above settings, the coordinated work of multiple electric telescopic rods 5 can achieve uniform clamping of the workpiece, reduce workpiece deformation caused by excessive local pressure, and improve processing accuracy.

[0029] As a further implementation of this solution, the inner side of the movable housing 61 is provided with a vertical groove 66 and a zigzag channel 64. A solenoid valve 65 is fixedly connected to the inner side of the zigzag channel 64, and a zigzag column 68 is slidably connected to the inner side of the zigzag channel 64. A toothed plate 69 is fixedly connected to the bottom end of the zigzag column 68, and the toothed plate 69 is slidably connected to the inner side of the vertical groove 66. A sealing ring is fixedly connected to the outer side of the zigzag column 68, and the sealing ring of the zigzag column 68 fits against the inner side of the zigzag channel 64. Through the above settings, gas leakage can be effectively prevented, ensuring the stability and reliability of the pneumatic system, thereby improving the response speed and control accuracy of the clamping system.

[0030] As a further implementation of this solution, the folded channel 64 is connected to the vertical groove 66, the vertical groove 66 penetrates the inner side of the movable shell 61 from front to back, and the folded channel 64 penetrates the right end of the movable shell 61. Through the above arrangement, the folded column 68 and the toothed plate 69 can move up and down, while limiting their range of movement.

[0031] As a further implementation of this solution, the right side of the movable shell 61 is fixedly connected to the left side of the hose 3. The hose 3 is provided with multiple branch pipes. The inner side of the hose 3 is connected to the folded channel 64 and the inner side of the hose 3 is connected to the air inlet of the air pump 2. Through the above settings, the synchronous control of multiple electric telescopic rods 5 can be achieved, ensuring the stability and accuracy of the workpiece during the processing.

[0032] As a further implementation of this solution, the bottom end of the toothed plate 69 is provided with teeth, and the left and right sides of the toothed plate 69 are fixedly connected with rail plates. The bottom end of the toothed plate 69 meshes with the rack 74 through the teeth. Through the above-mentioned arrangement, the toothed plate 69 is prevented from moving during the clamping process, thereby ensuring the positioning accuracy and stability of the workpiece during the processing.

[0033] As a further implementation of this solution, the center of the second permanent magnet block 71 is on the same horizontal line as the center of the first permanent magnet block 63. The first permanent magnet block 63 and the second permanent magnet block 71 are magnetically repelled. Multiple positioning components 6 and clamping components 7 are used. The dovetail slider 62 is slidably connected inside the dovetail guide groove 4. Through the above arrangement, slight contact and positioning of the workpiece can be achieved, reducing damage to the workpiece. The design of multiple positioning components 6 and clamping components 7 allows the device to adapt to workpieces of different shapes and sizes, improving the versatility and flexibility of the device.

[0034] Workflow: When fixing metal shell-type workpieces, the workpiece is placed between multiple clamping components 7. The number of electric telescopic rods 5, positioning components 6, and clamping components 7 can be increased or decreased as needed to ensure multi-directional positioning of the workpiece. Simultaneously, multiple electric telescopic rods 5 are activated, pushing the moving shell 61 towards the workpiece. The moving shell 61 drives the dovetail slider 62 to move. The dovetail slider 62 is slidably connected inside the dovetail guide groove 4. The shape of both the dovetail guide groove 4 and the dovetail slider 62 is a dovetail shape, which prevents the dovetail slider 62 from detaching from the dovetail guide groove 4 and improves the movement of the moving shell 61. For stability, the movable shell 61 moves the inner sliding connection to the clamping assembly 7. At this time, under the magnetic repulsion of the first permanent magnet block 63, the second permanent magnet block 71 moves away from the first permanent magnet block 63, while the second permanent magnet block 71 adheres to the inner side of the movable shell 61. When the rubber plate 76 contacts the workpiece, it pushes the rigid plate 75, the movable arm 72, and the second permanent magnet block 71 to move under the action of the reaction force. The rubber plate 76 protects the workpiece. The movable arm 72 is slidably connected to the embedded rail 67 through the limiting groove 73, which limits the movement of the movable arm 72. The second permanent magnet... As block 71 gradually moves towards the first permanent magnet block 63, the rubber plate 76 remains in close contact with the workpiece due to the magnetic repulsion between the first permanent magnet block 63 and the second permanent magnet block 71. The magnetic repulsion between the second permanent magnet block 71 and the first permanent magnet block 63 is relatively weak, resulting in a slight contact force between the rubber plate 76 and the workpiece. This arrangement of the second permanent magnet block 71 and the first permanent magnet block 63 provides a buffer during workpiece clamping, controls the clamping force, and also resets the clamping assembly 7. Once all rubber plates 76 are in close contact with the workpiece, the vacuum pump 2 is activated, and air is pumped through the hose 3. The internal magnetic attraction of the folded channel 64 keeps the solenoid valve 65 open. Under the action of gas suction, multiple folded columns 68 move downwards, which in turn drive the toothed plate 69 downwards. The teeth at the bottom of the toothed plate 69 mesh with the rack 74, thus preventing the movable arm 72 from moving and fixing the workpiece. After fixing, the solenoid valve 65 is closed. Based on the above principles, the device achieves slight contact with the workpiece when clamping and positioning metal shell workpieces, while simultaneously positioning the workpiece. This positioning method significantly reduces the probability of deformation of metal shell workpieces and ensures the pass rate of workpiece production.

[0035] 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 workpiece clamping and positioning integrated device of a numerical control machine tool, comprising a machine table (1), characterized in that: The top of the machine base (1) is fixedly connected to an air pump (2) and an electric telescopic rod (5). The left side of the air pump (2) is fixedly connected to a hose (3). The upper end of the machine base (1) is provided with a dovetail guide groove (4). The electric telescopic rod (5) is fixedly connected to a positioning component (6) on one side. The inner side of the positioning component (6) is slidably connected to a clamping component (7). The positioning component (6) includes a movable shell (61), a dovetail slider (62) is fixedly connected to the bottom of the movable shell (61), a first permanent magnet block (63) is fixedly connected to the inner side of the movable shell (61), and an embedded rail (67) is fixedly connected to the inner side of the movable shell (61). The clamping component (7) includes a second permanent magnet block (71), a movable arm (72) is fixedly connected to one side of the second permanent magnet block (71), a limiting groove (73) is opened at the left and right ends of the movable arm (72), a rack (74) is fixedly connected to the top of the movable arm (72), a hard plate (75) is fixedly connected to the end of the movable arm (72) away from the second permanent magnet block (71), and a rubber plate (76) is fixedly connected to one side of the hard plate (75). The limiting groove (73) is slidably connected to the outside of the mounting rail (67).

2. A workpiece clamping and positioning integrated device for a numerical control machine tool according to claim 1, characterized in that: The machine base (1) has multiple brackets fixed at its top. The air pump (2) and the electric telescopic rod (5) are both fixed inside the brackets of the machine base (1). There are multiple electric telescopic rods (5). The piston rod of the electric telescopic rod (5) is fixedly connected to one side of the movable shell (61).

3. A workpiece clamping and positioning integrated device for a numerically controlled machine tool according to claim 1, characterized in that: The movable housing (61) has a vertical groove (66) and a folded channel (64) on its inner side. A solenoid valve (65) is fixedly connected to the inner side of the folded channel (64). A folded column (68) is slidably connected to the inner side of the folded channel (64). A toothed plate (69) is fixedly connected to the bottom end of the folded column (68). The toothed plate (69) is slidably connected to the inner side of the vertical groove (66). A sealing ring is fixedly connected to the outer side of the folded column (68). The sealing ring of the folded column (68) fits against the inner side of the folded channel (64).

4. A workpiece clamping and positioning integrated device for a numerically controlled machine tool according to claim 3, characterized in that: The folded channel (64) is connected to the vertical groove (66), the vertical groove (66) penetrates the inner side of the movable shell (61) from front to back, and the folded channel (64) penetrates the right end of the movable shell (61).

5. A workpiece clamping and positioning integrated device for a numerically controlled machine tool according to claim 1, characterized in that: The right side of the movable housing (61) is fixedly connected to the left side of the hose (3). The hose (3) is provided with multiple branch pipes. The inner side of the hose (3) is connected to the folded channel (64). The inner side of the hose (3) is connected to the air inlet of the air pump (2).

6. A workpiece clamping and positioning integrated device for a numerically controlled machine tool according to claim 3, characterized in that: The toothed plate (69) has teeth at its bottom end, and rail plates are fixedly connected to both sides of the toothed plate (69). The bottom end of the toothed plate (69) meshes with the rack (74) through the teeth.

7. A workpiece clamping and positioning integrated device for a numerically controlled machine tool according to claim 1, characterized in that: The center of the second permanent magnet block (71) is on the same horizontal line as the center of the first permanent magnet block (63). The first permanent magnet block (63) and the second permanent magnet block (71) are magnetically repulsive. There are multiple positioning components (6) and clamping components (7). The dovetail slider (62) is slidably connected inside the dovetail guide groove (4).

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