Collet for numerical control machine tool

Abstract

The collet chuck for the numerical control machine tool comprises a fixing rod, first supporting rods, second supporting rods, a clamping rod, a connecting assembly and an adjusting assembly, the three first supporting rods which are evenly and annularly distributed are hinged to the middle of the outer side of the fixing rod, and the three second supporting rods which are evenly and annularly distributed are hinged to the front end of the outer side of the fixing rod. Clamping rods are hinged to the ends, away from the fixing rod, of the first supporting rod and the second supporting rod, an adjusting assembly used for controlling the clamping rods to clamp and fix parts is installed at the front end of the fixing rod, and connecting assemblies used for connecting the clamping rods and the fixing rod are installed on the sides, close to each other, of the fixing rod and the clamping rods. The clamping device has the advantages that a workpiece is stably clamped and fixed by controlling the three clamping rods, the workpiece can be conveniently and accurately fixed, and the speed and accuracy of subsequent machining are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of fixtures, in particular to a collet for a numerical control machine tool. Background Art

[0002] A numerical control machine tool is short for a numerically controlled machine tool, which is an automated machine tool equipped with a program control system. Through arithmetic processing, various control signals are sent out by the numerical control device to control the actions of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing. Existing numerical control machine tools need to be equipped with corresponding fixtures to stably clamp different workpieces.

[0003] The publicly known patent with the publication number CN220944211U discloses a fixture for a numerical control machine tool, which relates to the technical field of numerical control machine tools. It includes a mounting L-shaped plate, which consists of a horizontal plate and a vertical plate. A flipping structure is arranged on the vertical plate for flipping the workpiece clamped by the fixture. The flipping structure includes a flipping rod inserted into the vertical plate. One end of the flipping rod is sleeved with a fixing block fixed to the horizontal plate. The flipping rod is rotatably connected to both the vertical plate and the fixing block. A clamping structure is arranged at one end of the flipping rod for clamping the workpiece. A jacking structure is arranged on the horizontal plate for supporting the clamped workpiece. Through the arrangement of the flipping structure and the clamping structure, the clamping structure clamps the middle part of the workpiece, which is convenient for processing the top of the workpiece. At the same time, the flipping structure enables the clamping structure to clamp the workpiece and flip it back and forth, thus facilitating the processing of the original bottom of the workpiece, and reducing the limitations of the use of this fixture to a certain extent. However, the existing technology still has disadvantages:

[0004] When processing a cylindrical workpiece with the fixture in the prior art, the method of clamping both ends of the workpiece on the jaws is adopted. This clamping method causes part of the end of the workpiece to extend into the jaws, and thus the numerical control tool head cannot fully machine the outside of the workpiece. In order to complete the full machining of the workpiece, the operator also needs to remove the workpiece from the jaws, reposition it and machine the two ends one by one. This process not only increases the complexity of the operation, but also seriously affects the overall machining efficiency and accuracy. Especially in mass production, the cumbersome operation steps reduce the production efficiency. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the above defects and provide a collet for a numerical control machine tool.

[0006] To solve the above technical problem, the technical solution provided by the utility model is: a collet for a numerical control machine tool, comprising: a fixed rod;

[0007] The first support rod, three of the first support rods are hinged to the middle part of the outside of the fixed rod, and the three first support rods are evenly distributed in a ring shape;

[0008] The second support rod, three of the second support rods are hinged to the front end of the outer side of the fixed rod, and the three second support rods are evenly distributed in a ring shape;

[0009] The clamping rod, three of the clamping rods are respectively hinged to one ends of the three first support rods and the three second support rods away from the fixed rod;

[0010] The connection component, the connection component is arranged on the side where the clamping rod and the fixed rod are close to each other;

[0011] The adjustment component, the adjustment component is arranged on the fixed rod.

[0012] As an improvement, the connection component includes;

[0013] The sliding groove, three of the sliding grooves are opened on the front part of the outer side of the fixed rod, and the three sliding grooves are evenly distributed in a ring shape;

[0014] The sliding block, three of the sliding blocks are respectively inserted into the inner rear ends of the three sliding grooves;

[0015] The connecting rod, three of the connecting rods are respectively hinged to one ends of the three sliding blocks away from each other, and the upper ends of the three connecting rods are respectively hinged to the rear parts of the sides where the three clamping rods are close to each other.

[0016] As an improvement, the adjustment component includes:

[0017] The adjustment groove, the adjustment groove is opened at the front end of the fixed rod;

[0018] The adjustment block, the adjustment block is inserted into the inner part of the adjustment groove, and the adjustment block is fixedly connected to the side where the three sliding blocks are close to each other;

[0019] The threaded hole, the threaded hole is opened at the middle part of the front end of the adjustment block;

[0020] The lead screw, the lead screw is threadedly connected to the inside of the lead screw, and the lead screw is rotationally connected to the middle part of the inner rear end of the adjustment groove through a bearing;

[0021] The fixing plate, the fixing plate is rotationally connected to the outer front end of the lead screw through a bearing, and the fixing plate is fixedly connected to the inner front end of the adjustment groove.

[0022] As an improvement, a connection disk is fixedly connected to the rear end of the fixed rod, and three connection grooves are opened on the outer side of the connection disk, and the three connection grooves are evenly distributed in a ring shape.

[0023] As an improvement, an adjustment disk is fixedly connected to the front end of the lead screw.

[0024] The advantages of the present utility model compared with the prior art are as follows: The present utility model clamps and fixes the workpiece by controlling three clamping rods. First, the connecting disc is installed inside the chuck of the machine tool and fixed through the connecting groove, and the fixing rod and the chuck of the machine tool are concentrically fixed. After that, the tubular workpiece is inserted outside the device, and then the adjusting disc rotates the lead screw. The lead screw drives the adjusting block to slide inside the adjusting groove under the restriction of the sliding groove and the slider. With the support of the connecting rod, the three clamping plates are controlled to move away from each other, and the workpiece is supported by the interaction of the three clamping plates. The part and the fixing rod are concentrically fixed, so that the workpiece can be fixed conveniently and accurately, ensuring the speed and accuracy of subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a perspective view of the present utility model.

[0026] Figure 2 is a cross-sectional view of the present utility model.

[0027] Figure 3 is a cross-sectional view of the fixing rod of the present utility model.

[0028] Figure 4 is a schematic diagram of the adjusting assembly of the present utility model.

[0029] As shown in the figure: 1. Fixing rod; 2. First support rod; 3. Second support rod; 4. Clamping rod; 5. Connecting assembly; 51. Sliding groove; 52. Slider; 53. Connecting rod; 6. Adjusting assembly; 61. Adjusting groove; 62. Adjusting block; 63. Threaded hole; 64. Lead screw; 65. Fixed plate; 7. Connecting disc; 71. Connecting groove; 8. Adjusting disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1:

[0033] As Figures 1 to 4As shown in the figure, this embodiment proposes a collet for a numerically controlled machine tool, which includes a fixed rod 1, a first support rod 2, a second support rod 3, a clamping rod 4, a connection assembly 5 and an adjustment assembly 6. Three first support rods 2 are evenly distributed in a ring shape and hinged to the middle part of the outer side of the fixed rod 1. Three second support rods 3 are evenly distributed in a ring shape and hinged to the front end of the outer side of the fixed rod 1. Clamping rods 4 are hinged to the ends of the three first support rods 2 and the second support rods 3 away from the fixed rod 1. An adjustment assembly 6 for controlling the clamping rod 4 to clamp a part is installed at the front end of the fixed rod 1. A connection assembly 5 for connecting the clamping rod 4 and the fixed rod 1 is installed on the side where the fixed rod 1 and the clamping rod 4 are close to each other.

[0034] The connection assembly 5 includes a chute 51, a slider 52 and a connecting rod 53. Three chutes 51 are opened on the front side of the outside of the fixed rod 1. The three chutes 51 are evenly distributed in a ring shape. The slider 52 is inserted into the chute 51. A connecting rod 53 for connecting the slider 52 and the clamping rod 4 is hinged to the upper end of the slider 52. The upper end of the connecting rod 53 is hinged to the rear part of the side of the clamping rod 4 close to the fixed rod 1.

[0035] The adjustment assembly 6 includes an adjustment groove 61, an adjustment block 62, a threaded hole 63, a lead screw 64 and a fixing plate 65. An adjustment groove 61 for installing the adjustment block 62 is opened at the front end of the fixed rod 1. The adjustment block 62 is fixedly connected to the side where the three sliders 52 are close to each other. The adjustment block 62 is inserted into the adjustment groove 61. A threaded hole 63 penetrating the adjustment block 62 for controlling the sliding of the adjustment block 62 inside the adjustment groove 61 is opened in the middle of the front end of the adjustment block 62. A lead screw 64 for controlling the sliding of the adjustment block 62 inside the adjustment groove 61 is threadedly connected to the threaded hole 63. The lead screw 64 is rotatably connected to the middle part of the inner side rear end of the adjustment groove 61 through a bearing. A fixing plate 65 for fixing the lead screw 64 is rotatably connected to the front end of the outside of the lead screw 64 through a bearing. The fixing plate 65 is fixedly connected to the front end inside the adjustment groove 61.

[0036] Example 2:

[0037] The solution in Example 1 will be further introduced below in combination with the specific working mode. See the following description for details:

[0038] A connection disk 7 for fixing the whole to the machine tool chuck is fixedly connected to the rear end of the fixed rod 1. Three connection grooves 71 for fixing the connection disk 7 to the machine tool chuck are opened on the outside of the connection disk 7 and are evenly distributed in a ring shape.

[0039] An adjustment disk 8 for facilitating the rotation of the lead screw 64 is fixedly connected to the front end of the lead screw 64.

[0040] All the electrical components appearing in this article are electrically connected to the external main controller and the 220V mains power supply. The main controller can be a conventional known device such as a computer for control. In the specific implementation manners of the present disclosure, the detailed descriptions of known functions and known components are omitted. To ensure the compatibility of the device, the operation means adopted are consistent with the parameters of market instruments.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A collet for a CNC machine tool, characterized in that: include: Fixed rod (1); Support rods (2), three of the support rods (2) are hinged to the middle of the outer side of the fixed rod (1), and the three support rods (2) are evenly distributed in a ring shape; Support rods 2 (3), three of the support rods 2 (3) are hinged to the outer front end of the fixed rod (1), and the three support rods 2 (3) are evenly distributed in a ring shape; Clamping rods (4), wherein three of the clamping rods (4) are respectively hinged to one end of three support rods one (2) and three support rods two (3) away from the fixing rod (1); A connecting component (5), wherein the connecting component (5) is arranged on a side where the clamping rod (4) and the fixing rod (1) are close to each other; An adjustment component (6), wherein the adjustment component (6) is arranged on the fixing rod (1).

2. A collet for a CNC machine tool according to claim 1, characterized in that: The connecting component (5) comprises: Slide grooves (51), wherein three of the slide grooves (51) are arranged at the front portion of the outer side of the fixing rod (1), and the three slide grooves (51) are evenly distributed in an annular shape; Slide blocks (52), wherein three slide blocks (52) are respectively inserted into the inner rear ends of the three slide grooves (51); The three connecting rods (53) are respectively hinged to the ends of the three sliders (52) that are away from each other, and the upper ends of the three connecting rods (53) are respectively hinged to the rear parts of the sides of the three clamping rods (4) that are close to each other.

3. A collet for a CNC machine tool according to claim 2, characterized in that: The regulating component (6) comprises: An adjustment slot (61), wherein the adjustment slot (61) is disposed at the front end of the fixing rod (1); An adjusting block (62), the adjusting block (62) being inserted into the adjusting groove (61), and the adjusting block (62) being fixedly connected to a side where the three sliding blocks (52) are close to each other; A threaded hole (63), wherein the threaded hole (63) is provided in the middle of the front end of the adjustment block (62); A screw rod (64), wherein the screw rod (64) is threadedly connected to the interior of the screw rod (64), and the screw rod (64) is rotatably connected to the middle portion of the rear end of the inner side of the adjustment groove (61) through a bearing; A fixed plate (65) is rotatably connected to the outer front end of the screw rod (64) via a bearing, and the fixed plate (65) is fixedly connected to the inner front end of the adjustment slot (61).

4. A collet for a CNC machine tool according to claim 1, characterized in that: A connection plate (7) is fixedly connected to the rear end of the fixing rod (1), and three connection grooves (71) are formed on the outer side of the connection plate (7), and the three connection grooves (71) are evenly distributed in an annular shape.

5. A collet for a CNC machine tool according to claim 3, characterized in that: The front end of the screw rod (64) is fixedly connected to an adjusting disk (8).

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