CN218800562U - Workpiece clamping device of numerical control machine tool - Google Patents

Abstract

The utility model relates to the field of clamping devices, in particular to a workpiece clamping device for a numerically controlled machine tool. Its technical proposal includes a clamping table, a sliding groove is provided at the middle position of the top of the clamping table, and both sides of the top of the clamping table are engaged. There are clamping blocks, the bottoms of the two clamping blocks are fixedly connected with sliding blocks, and the outer walls of the two sliding blocks are respectively engaged with the two sides of the inner wall of the sliding groove, and the inner walls of the two sliding blocks are interspersed with positive The two sides of the outer wall of the positive and negative screw rod are interspersed and connected with the inner walls of the two sliding blocks, and one end of the positive and negative screw rod is fixedly connected with the first hand wheel, and one side of the outer wall of the positive and negative screw rod is connected with the clip The inner wall on one side of the holding table is interspersed and connected, and the cylindrical workpiece can be firmly fixed by the principle of triangular stability, and the V-shaped groove composed of two clamping blocks can adapt to a variety of cylindrical workpieces with different outer diameters. It can quickly fix cylindrical workpieces with different outer diameters, and the operation is simple and convenient, and the fixing effect is good.

Description

A CNC machine tool workpiece clamping device

technical field

The utility model relates to the scope of a clamping device, in particular to a workpiece clamping device for a numerically controlled machine tool.

Background technique

With the continuous advancement of technological modernization, CNC machine tools have gradually entered people's lives. CNC machine tools have better solved complex, precise, small-batch, and multi-variety parts processing problems. They are a flexible and high-efficiency automation. Machine tools, in the production process of CNC machine tools, it is necessary to process many cylindrical shells with different outer diameters, but the existing CNC machine tools are inconvenient to clamp these cylindrical shells, and in the process of processing, often due to clamping If the clamping is not tight, it will cause the dislocation of the clamping, which will affect the production and processing of the CNC machine tool. Therefore, a workpiece clamping device for the CNC machine tool is proposed.

After searching, the patent announcement number is CN 213646680 U which discloses a kind of CNC machine tool workpiece clamping device, which includes a support plate and a movable frame, and a box body is fixedly installed on one side of the support plate. The four corners of the lower side are fixedly equipped with support columns, and one side of the outer wall of the support plate is opened with a

The movable frame is an "L"-shaped structure, and the movable frame is movably inserted into the through groove, and the middle of the lower side of the movable frame is inlaid with a threaded sleeve, and the movable frame is on both sides of the threaded sleeve. A through hole is opened, and a limit rod is inserted into the hole of the through hole. One end of the limit rod is fixedly installed on the bottom inner wall of the box body. The device is provided with a forward and reverse motor, a movable frame, and a first fixed seat And the second fixed seat, etc., the first threaded rod is driven to rotate through the set forward and reverse motor, and the up and down displacement of the movable frame can be controlled. By controlling the distance between the first fixed seat and the second fixed seat, it can be placed on the The cylindrical equipment on the clamping groove is clamped, and the clamping groove can be replaced by inserting the bolts in the counterbore. By replacing the clamping groove with different inner diameter arc grooves, the cylindrical equipment with different outer diameter can be Effective clamping ensures the practicability of the device.

The above-mentioned device achieves effective clamping of cylindrical equipment with different outer diameters by replacing the clamping groove, but the above-mentioned device has the following shortcomings to be improved: 1. The scope of application of the device is mainly expanded by replacing the clamping groove, which requires Prepare a variety of clamping grooves of different sizes for one-to-one clamping with the cylindrical equipment. A slight size mismatch will directly affect the stability of the clamping, and will indirectly increase the production cost of the device; 2. Replace the clamping groove The method is cumbersome and affects the clamping efficiency of the workpiece. In view of this, we propose a workpiece clamping device for CNC machine tools to solve the existing problems.

Utility model content

The purpose of this utility model is to provide a CNC machine tool workpiece clamping device to solve the problems raised in the above background technology.

In order to achieve the above object, the utility model provides the following technical solutions: a workpiece clamping device for numerically controlled machine tools, including a clamping platform, a slide groove is opened at the middle position of the top of the clamping platform, and the two sides of the top of the clamping platform are Both of the clamping blocks are engaged with each other, and the bottoms of the two clamping blocks are fixedly connected with sliding blocks, and the outer walls of the two sliding blocks are respectively engaged with the two sides of the inner wall of the sliding groove, and the two sliding blocks The inner walls of the positive and negative screw rods are interspersed with positive and negative screw rods, and the two sides of the outer walls of the positive and negative screw rods are interspersed with the inner walls of the two sliding blocks. One end of the positive and negative screw rods is fixedly connected with the first hand wheel, and the positive and negative screw rods One side of the outer wall of the threaded rod is interspersed with the inner wall of one side of the clamping platform.

Preferably, brackets are fixedly connected to the edges on both sides of the clamping table, and the two ends of the bottom of the bracket are respectively fixedly connected to the edges on both sides of the clamping table, and the middle position of the bracket is interspersed with a transmission screw .

Preferably, the top of the driving screw is fixedly connected with a second hand wheel, and the bottom of the driving screw is rotatably provided with a fixed plate.

Preferably, a bearing is embedded in the middle of the fixed plate, and the inner wall of the bearing is engaged with the bottom of the driving screw.

Preferably, mounting plates are fixedly connected to both sides of the clamping table, and sliding openings are opened on the surfaces of the two mounting plates.

Preferably, the inner walls of the two sliding ports are engaged with fixed screws, and the tops of the two clamping tables, the bottoms of the fixed disks, and the bottoms of the two mounting plates are fixedly connected with protective pads .

Compared with the prior art, the beneficial effects of the utility model are:

1. First place the cylindrical workpiece to be processed in the middle of the two clamping blocks. The tops of the two clamping blocks together form a V-shaped clamping groove, so that the cylindrical workpiece can automatically fall into the two clamping blocks. center position of the first clamping block, and then by turning the second hand wheel, the drive screw drives the fixed disc to descend, and makes the bottom of the fixed disc closely against the top of the cylindrical workpiece, because the two sides of the bottom of the cylindrical workpiece are respectively in contact with the top of the cylindrical workpiece. The tops of the two clamping blocks are in conflict, so that the cylindrical workpiece is clamped by forces from three directions, and the cylindrical workpiece can be firmly fixed through the principle of triangular stability, while the two clamping blocks consist of The V-shaped groove can adapt to a variety of cylindrical workpieces with different outer diameters. This device has strong adaptability. It can not only quickly fix cylindrical workpieces with different outer diameters, but also has simple and convenient operation, good fixing effect, and good promotion value. ;

2. When the outer diameter of the cylindrical workpiece is too large, the positive and negative screw rods can be driven to rotate by turning the first hand wheel. When the positive and negative screw rods are rotating, the two sliding blocks are driven to move in opposite directions, so that the two clamping The top of the block can be adapted to both sides of the bottom of the cylindrical workpiece, and then the cylindrical workpiece can be fixed by the same method. The device can further expand the application range of the device through the above method.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model;

Fig. 2 is the schematic diagram of clamping block transmission structure in the utility model;

Fig. 3 is a schematic diagram of the structure of the fixed disk in the utility model.

In the figure: 1. Clamping table; 2. Sliding groove; 3. Clamping block; 4. Sliding block; 5. Front and back screw rod; 6. First hand wheel; 7. Bracket; 8. Transmission screw rod; 9 , the second hand wheel; 10, the fixed plate; 11, the bearing; 12, the mounting plate; 13, the sliding port; 14, the fixed screw; 15, the protective pad.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and not intended to limit the scope of the present invention. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present invention.

As shown in Figure 1-3, a kind of CNC machine tool workpiece clamping device proposed by the utility model includes a clamping table 1, a sliding groove 2 is opened at the middle position of the top of the clamping table 1, and the two sides of the top of the clamping table 1 Both clamping blocks 3 are fitted together, and the bottoms of the two clamping blocks 3 are fixedly connected with sliding blocks 4, and the outer walls of the two sliding blocks 4 are respectively engaged with the two sides of the inner wall of the sliding groove 2, and the two sliding blocks The inner wall of the block 4 is interspersed with positive and negative screw mandrels 5, the positive and negative screw mandrels 5 can make the two clamping blocks 3 move in opposite directions, and the two sides of the outer walls of the positive and negative screw mandrels 5 are respectively connected to the sides of the two sliding blocks 4. The inner wall is interspersed and connected, one end of the positive and negative screw rod 5 is fixedly connected with the first handwheel 6, and one side of the outer wall of the positive and negative screw rod 5 is connected with the inner wall of the clamping table 1 side, and the surfaces of the two mounting plates 12 Both of them are provided with sliding openings 13, and the inner walls of the two sliding openings 13 are both snapped and connected with fixed screw rods 14;

As shown in Figure 2, both sides of the top of the clamping platform 1 are fitted with clamping blocks 3, and the bottoms of the two clamping blocks 3 are fixedly connected with sliding blocks 4, and the outer walls of the two sliding blocks 4 are respectively connected to The two sides of the inner wall of the sliding groove 2 are engaged and connected, the inner walls of the two sliding blocks 4 are interspersed with positive and negative screw rods 5, and the two sides of the outer walls of the positive and negative screw rods 5 are respectively interspersed with the inner walls of the two sliding blocks 4, One end of the positive and negative screw rod 5 is fixedly connected with the first handwheel 6, and the tops of the two clamping tables 1 and the bottom of the fixed plate 10 and the bottoms of the two mounting plates 12 are fixedly connected with a protective pad 15, and the protective pads 15 effect on the surface of the protective device;

As shown in Figure 3, the middle position of support 7 is interspersed with transmission screw mandrel 8, and the top of transmission screw mandrel 8 is fixedly connected with second handwheel 9, and the bottom of transmission screw mandrel 8 rotates and is provided with fixed disk 10, and fixed disk 10 A bearing 11 is embedded in the middle of the center position, and one end of the positive and negative screw rod 5 is fixedly connected with the first handwheel 6, and the tops of the two clamping tables 1, the bottoms of the fixed plate 10 and the bottoms of the two mounting plates 12 are all fixedly connected. Protective pad 15 is arranged.

The working principle of the utility model is as follows: first, the cylindrical workpiece to be processed is placed in the middle of the two clamping blocks 3, and the tops of the two clamping blocks 3 together form a V-shaped clamping groove, so that the circular The cylindrical workpiece can automatically fall into the position between the two clamping blocks 3, and then by turning the second hand wheel 9, the transmission screw 8 drives the fixed plate 10 to descend, and makes the bottom of the fixed plate 10 and the bottom of the cylindrical workpiece The top is in close contact, because the two sides of the bottom of the cylindrical workpiece are respectively in conflict with the tops of the two clamping blocks 3, so that the cylindrical workpiece is clamped by forces in three directions, and the cylindrical workpiece can be stabilized by the principle of triangular stability. It is firmly fixed, and the V-shaped groove composed of two clamping blocks 3 can adapt to a variety of cylindrical workpieces with different outer diameters. This device has strong adaptability, and can not only quickly fix cylindrical workpieces with different outer diameters , and the operation is simple and convenient, the fixing effect is good, and it has good promotion value;

When the outer diameter of the cylindrical workpiece is too large, the positive and negative screw mandrel 5 can be driven to rotate by turning the first hand wheel 6, and the positive and negative screw mandrel 5 drives the two sliding blocks 4 to move in opposite directions when rotating, so that the two The top of the clamping block 3 can be adapted to both sides of the bottom of the cylindrical workpiece, and then the cylindrical workpiece can be fixed by the same method. This device can further expand the scope of use of the device through the above method.

It should be understood that the above specific embodiments of the present utility model are only used to illustrate or explain the principle of the present utility model, but not to limit the present utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model shall be included in the protection scope of the present utility model. Furthermore, the appended claims are intended to cover all changes and modifications that come within the scope and boundaries of the appended claims, or equivalents of such scope and boundaries.

Claims (6)

1. A workpiece clamping device for a numerically controlled machine tool, comprising a clamping platform (1), characterized in that: a sliding groove (2) is provided at the middle position of the top of the clamping platform (1), and the clamping platform (1) ) both sides of the top are engaged with clamping blocks (3), the bottoms of the two clamping blocks (3) are fixedly connected with sliding blocks (4), and the outer walls of the two sliding blocks (4) are respectively Engaged with both sides of the inner wall of the sliding groove (2), the inner walls of the two sliding blocks (4) are interspersed with positive and negative screw rods (5), and the two sides of the outer walls of the positive and negative screw rods (5) are respectively It is interspersed with the inner walls of the two sliding blocks (4), and one end of the positive and negative screw rods (5) is fixedly connected with the first hand wheel (6), and one side of the outer wall of the positive and negative screw rods (5) is connected with the clip The inner wall on one side of the platform (1) is inserted and connected. 2. A kind of CNC machine tool workpiece clamping device according to claim 1, characterized in that: brackets (7) are fixedly connected to the edges of both sides of the clamping platform (1), and the bottom of the bracket (7) The two ends of the frame are respectively fixedly connected to the edges on both sides of the clamping platform (1), and the middle position of the bracket (7) is interspersed with a transmission screw (8). 3. A workpiece clamping device for a CNC machine tool according to claim 2, characterized in that: the top of the transmission screw (8) is fixedly connected with a second handwheel (9), and the transmission screw (8) ) is provided with a fixed plate (10) for rotation at the bottom. 4. A workpiece clamping device for a CNC machine tool according to claim 3, characterized in that: a bearing (11) is embedded in the middle position of the fixed plate (10), and the inner wall of the bearing (11) is in contact with the transmission wire The bottom of the rod (8) is snap-fit connected. 5. a kind of CNC machine tool workpiece clamping device according to claim 1, is characterized in that: the both sides of described clamping platform (1) are all fixedly connected with mounting plate (12), two described mounting plates ( 12) are provided with sliding openings (13) on the surface. 6. A kind of CNC machine tool workpiece clamping device according to claim 5, characterized in that: the inner walls of the two sliding ports (13) are engaged with fixed screw rods (14), and the two clamping ports Protective pads (15) are fixedly connected to the top of the table (1), the bottom of the fixed plate (10) and the bottoms of the two mounting plates (12).

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