A CNC machine tool circular workpiece centering and clamping device

Abstract

This utility model discloses a centering and clamping device for a circular workpiece on a CNC machine tool, relating to the field of machining technology. It includes a base plate, with outer clamping seats at both ends of the upper surface of the base plate, and inner clamping seats on the upper surface of the base plate and inside the two outer clamping seats. A lower clamping groove is laterally formed at the middle of the upper ends of both the two outer and two inner clamping seats. Clamping plates are provided between the outer and inner clamping seats on both sides. An upper clamping groove is laterally formed at the middle of the lower ends of both clamping plates. Limiting edges are provided on the front and rear sides of the clamping plates. Limiting grooves are formed on the inner sides of both the outer and inner clamping seats at positions corresponding to the limiting edges. Clamping bolts penetrate the front and rear ends of the clamping plates. This device ensures both the secure fixing of the workpiece and the centering accuracy of the workpiece, thereby guaranteeing the machining precision of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a centering and clamping device for a circular workpiece on a CNC machine tool. Background Technology

[0002] CNC machine tools are high-precision equipment that achieves automated machining through a computer numerical control system. They use pre-programmed digital instructions to control parameters such as tool movement trajectory, spindle speed, and feed rate, enabling them to perform various machining operations such as milling, turning, drilling, and tapping. Compared to traditional machine tools, CNC machine tools have significant advantages such as high machining accuracy, high production efficiency, and strong adaptability. They are particularly suitable for machining complex curved surface parts, precision molds, and products with high consistency requirements in large batches. When machining side holes on circular workpieces using a CNC machine tool, a clamping device is required to fix the workpiece. Traditional circular workpiece clamping devices use V-grooves to hold the workpiece, which effectively fixes it, but cannot guarantee the centering accuracy of the workpiece, affecting the machining accuracy of the equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a centering and clamping device for circular workpieces in CNC machine tools, so as to solve the problem of the traditional circular workpiece clamping device mentioned in the background art, which clamps the workpiece by V-slot. Although it can effectively fix the workpiece, it cannot guarantee the centering accuracy of the workpiece and affect the processing accuracy of the equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a CNC machine tool circular workpiece centering and clamping device, comprising a base plate, with outer clamping seats provided at both ends of the outer side of the upper surface of the base plate, and inner clamping seats provided on the upper surface of the base plate and on the inner side of the two outer clamping seats. A lower clamping groove is laterally formed at the middle of the upper ends of the two outer clamping seats and the two inner clamping seats. Clamping plates are provided between the outer clamping seats and the inner clamping seats on both the left and right sides. An upper clamping groove is laterally formed at the middle of the lower ends of the two clamping plates. Limiting edges are provided on the front and rear sides of the clamping plates. Limiting grooves are formed at positions corresponding to the limiting edges on the inner sides of the outer clamping seats and the inner sides of the inner clamping seats. Clamping bolts are provided through the front and rear ends of the clamping plates, and the clamping bolts are connected to the base plate by threads.

[0005] Preferably, a working space is provided above the base plate and between the two inner clamping seats, a material drop groove is provided in the middle of the base plate, and fixing bolt holes are provided in the middle of the front and rear sides of the base plate. An interlocking space is provided between the outer clamping seat and the inner clamping seat, and the clamping plate is slidably connected to the interior of the interlocking space.

[0006] Preferably, both the lower clamping groove and the upper clamping groove are right-angled slot structures, and the lower clamping groove and the upper clamping groove form a square structure.

[0007] Preferably, the upper surface of the clamping plate is provided with a storage groove on the front and rear sides, and the upper end of the clamping bolt is disposed inside the storage groove.

[0008] Preferably, the limiting edge is slidably connected to the limiting groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are: based on the traditional circular workpiece clamping device that clamps the workpiece by V-shaped slotting, a clamping groove that moves up and down is designed to clamp the circular workpiece, so that the axis of the circular workpiece is kept in the middle position of the clamping device. While ensuring the workpiece is firmly fixed, the centering accuracy of the workpiece is also guaranteed, thus ensuring the processing accuracy of the equipment. Attached Figure Description

[0010] Figure 1 This is an isometric exploded view of the main structure of this utility model;

[0011] Figure 2 This is an isometric view of the main structure of this utility model;

[0012] Figure 3 This is a front view schematic diagram of the main structure of this utility model;

[0013] Figure 4 This is a left-side view of the main structure of this utility model;

[0014] Figure 5 This is a top view of the main structure of this utility model.

[0015] In the diagram: 1-base plate, 2-outer clamping seat, 3-inner clamping seat, 4-lower clamping groove, 5-clamping plate, 6-upper clamping groove, 7-limiting edge, 8-limiting groove, 9-clamping bolt, 10-working space, 11-dropping groove, 12-fixing bolt hole, 13-interlocking space, 14-storage groove. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5This utility model provides a centering and clamping device for a circular workpiece on a CNC machine tool, comprising a base plate 1. Outer clamping seats 2 are provided at both ends of the outer surface of the upper surface of the base plate 1. Inner clamping seats 3 are provided on the upper surface of the base plate 1 and on the inner sides of the two outer clamping seats 2. Lower clamping grooves 4 are laterally formed at the middle of the upper ends of the two outer clamping seats 2 and the two inner clamping seats 3. Clamping plates 5 are provided between the outer clamping seats 2 and the inner clamping seats 3 on both sides. Upper clamping grooves 6 are laterally formed at the middle of the lower ends of the two clamping plates 5. Limiting edges 7 are provided on the front and rear sides of the clamping plates 5. Limiting grooves 8 are formed at positions corresponding to the limiting edges 7 on the inner sides of the outer clamping seats 2 and the inner sides of the inner clamping seats 3. Clamping bolts 9 are provided through the front and rear ends of the clamping plates 5, and the clamping bolts 9 are connected to the base plate 1 by threads.

[0018] In use, the base plate 1 is fixed to the CNC machine tool mounting platform with bolts. The circular workpiece to be clamped is placed inside the lower clamping groove 4 opened on the outer clamping seat 2 and the inner clamping seat 3. At this time, the axis of the circular workpiece is located in the middle position of the clamping device. Then, the clamping plate 5 is set between the outer clamping seat 2 and the inner clamping seat 3. The clamping plate 5 is slidably connected to the outer clamping seat 2 and the inner clamping seat 3, and is limited by the connection between the limiting edge 7 and the limiting groove 8, thereby ensuring the horizontal loading of the clamping plate 5 when it falls. The lower end of the clamping plate 5 is opened with the upper clamping groove 6. The circular workpiece is clamped and fixed by the upper clamping groove 6 and the lower clamping groove 4. At this time, the centering accuracy of the circular workpiece is maintained, and the clamping plate 5 is connected to the base plate 1 by the clamping bolts 9, thereby ensuring the clamping firmness. The CNC machine tool opens a hole on the side of the circular workpiece.

[0019] A working space 10 is provided above the base plate 1 and between the two inner clamping seats 3. A material discharge groove 11 is provided in the middle of the base plate 1. Fixing bolt holes 12 are provided in the middle of the front and rear sides of the base plate 1. An interlocking space 13 is provided between the outer clamping seat 2 and the inner clamping seat 3. The clamping plate 5 is slidably connected to the interior of the interlocking space 13. The base plate 1 is fixed to the mounting platform of the CNC machine tool by bolts passing through the fixing bolt holes 12. The working space 10 is provided on the base plate 1 to provide running space for the drill bit of the CNC machine tool. The debris generated during drilling is output to the outside through the material discharge groove 11. The interlocking space 13 is provided between the outer clamping seat 2 and the inner clamping seat 3 to provide space for the installation of the clamping plate 5.

[0020] Both the lower clamping groove 4 and the upper clamping groove 6 are right-angled slotted structures. The lower clamping groove 4 and the upper clamping groove 6 form a square structure. Through the square structure design of the lower clamping groove 4 and the upper clamping groove 6, round workpieces of various sizes can be clamped and fixed.

[0021] The upper surface of the clamping plate 5 has a storage groove 14 on the front and rear sides. The upper end of the clamping bolt 9 is placed inside the storage groove 14, so that the upper end of the clamping bolt 9 is stored inside the storage groove 14 to avoid interference with the operation of the CNC machine tool.

[0022] The limiting edge 7 is slidably connected to the limiting groove 8, which facilitates the installation and disassembly of the clamping plate 5.

[0023] 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 centering and clamping device for circular workpieces on a CNC machine tool, characterized in that: Includes a base plate (1), with outer clamping seats (2) provided at both ends of the outer side of the upper surface of the base plate (1), and inner clamping seats (3) provided on the upper surface of the base plate (1) and inside the two outer clamping seats (2). A lower clamping groove (4) is laterally opened at the middle position of the upper end of the two outer clamping seats (2) and the two inner clamping seats (3). A clamping plate (5) is provided between the outer clamping seats (2) and the inner clamping seats (3) on both the left and right sides. The two clamping plates (5) are provided with upper clamping grooves (6) at the middle of their lower ends. The clamping plates (5) are provided with limiting edges (7) on their front and rear sides. The inner side of the outer clamping seat (2) and the inner side of the inner clamping seat (3) are provided with limiting grooves (8) at positions corresponding to the limiting edges (7). The clamping plates (5) are provided with clamping bolts (9) at their front and rear ends. The clamping bolts (9) are connected to the base plate (1) by threads.

2. The CNC machine tool circular workpiece centering and clamping device according to claim 1, characterized in that: A working space (10) is provided above the base plate (1) and between the two inner clamping seats (3). A material drop groove (11) is provided in the middle of the base plate (1). Fixed bolt holes (12) are provided in the middle of the front and rear sides of the base plate (1). An interlocking space (13) is provided between the outer clamping seat (2) and the inner clamping seat (3). The clamping plate (5) is slidably connected to the interior of the interlocking space (13).

3. The CNC machine tool circular workpiece centering and clamping device according to claim 1, characterized in that: Both the lower clamping groove (4) and the upper clamping groove (6) are right-angled slot structures, and the lower clamping groove (4) and the upper clamping groove (6) form a square structure.

4. A CNC machine tool circular workpiece centering and clamping device according to claim 1, characterized in that: The clamping plate (5) has a storage groove (14) on the front and back sides of its upper surface, and the upper end of the clamping bolt (9) is set inside the storage groove (14).

5. A CNC machine tool circular workpiece centering and clamping device according to claim 1, characterized in that: The limiting edge (7) is slidably connected to the limiting groove (8).

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