A spindle damping device for a numerical control machine tool

Abstract

The utility model relates to numerical control machine tool technical field especially, a kind of spindle damping device for numerical control machine tool, including four stress supports around the equidistant distribution of shaft body circumference, four stress supports outside are all provided with the mounting mechanism for connecting machine tool main body, four stress supports inside are all provided with the buffer mechanism for the elastic support shaft body.The utility model sets up four equidistant distribution of stress supports, three-way cavity is set up in stress support, and T-shaped connecting piece and telescopic rubber pad integrally connected are set in three-way cavity;Mounting piece is fixedly installed in T-shaped connecting piece inside, and first elastic piston support and second elastic piston support are respectively set in the middle end and both ends position of mounting piece, first roller and second roller are respectively set using first elastic piston support and second elastic piston support, to provide elastic support for shaft body from multiple directions, angle.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a spindle damping device for CNC machine tools. Background Technology

[0002] Numerical control machine tools are a type of automated machine tool equipped with a program control system. They can operate and process parts according to a pre-programmed program, which helps solve the problem of processing complex, precise, small-batch, and multi-variety parts.

[0003] As the power transmission component in CNC machine tools, the spindle is prone to high-frequency vibrations during operation. Traditional machine tools lack corresponding vibration damping and protection measures for the spindle. Even if a CNC machine tool spindle transmission vibration damping mechanism disclosed in announcement number CN215147267U is used, the protection for the spindle is unidirectional. In particular, the spindle can only be supported by the folding plate at the bottom. During the high-speed rotation of the spindle, there is a centrifugal force, and the direction of expansion motion is not unique. It is difficult to provide all-round buffer protection for the spindle using this structure. Therefore, it will still collide and be squeezed with other components due to vibration, which can easily cause serious wear and tear during contact with the machine tool body. Utility Model Content

[0004] The purpose of this invention is to solve the problem of providing vibration damping protection for CNC machine tool spindles in the prior art, and to propose a spindle vibration damping device for CNC machine tools.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spindle vibration damping device for CNC machine tools includes four stress supports equidistantly distributed around the spindle in the circumference. Each of the four stress supports has an installation mechanism for connecting to the machine tool body on its outer side, and a buffer mechanism for elastically supporting the spindle on its inner side.

[0007] Preferably, the four stress supports are connected end to end to form a square frame structure surrounding the shaft, and the shaft is located at the center of the square frame.

[0008] Preferably, the mounting mechanism includes a three-way cavity formed in the stress support, a T-shaped connector for fixing and connecting the machine tool body is slidably fitted in the middle opening of the three-way cavity, two telescopic rubber pads are integrally connected to the T-shaped connector and are slidably fitted in the openings at both ends of the three-way cavity, and a strong spring for fixing and connecting the T-shaped connector is fixedly fitted on the telescopic rubber pad.

[0009] Preferably, the outer end of the T-shaped connector is symmetrically provided with locking through holes for installing bolts, and the two telescopic rubber pads are symmetrically arranged on the inner end of the T-shaped connector located in the three-way cavity.

[0010] Preferably, the buffer mechanism includes an assembly fixedly connected to the inner side of the stress support, and a mountain-shaped component integrally connected to the assembly. The mountain-shaped component has a first roller and a second roller movably disposed therein, which movably abut against the shaft.

[0011] Preferably, the mountain-shaped component has a first port at its middle end corresponding to the first roller, and two second ports corresponding to the second roller are symmetrically opened on both sides of the mountain-shaped component.

[0012] Preferably, a first elastic piston support for rotatably mounting a first roller is movably fitted in the first port, and a second elastic piston support for rotatably mounting a second roller is movably fitted in the second port.

[0013] Preferably, the two second rollers are symmetrically arranged on both sides of the first roller.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This utility model is provided with four circumferentially equidistant stress supports, and a three-way cavity is opened in the stress support. A T-shaped connector and a telescopic rubber pad are integrally connected in the three-way cavity. The strong spring of the telescopic rubber pad provides symmetrical elastic support for the T-shaped connector, so that the T-shaped connector and the machine tool body can achieve a preliminary movable connection, thereby reducing the vibration impact of the machine tool body on the T-shaped connector.

[0016] 2. In this utility model, a mountain-shaped component is fixedly installed inside the T-shaped connector, and a first elastic piston support and a second elastic piston support are respectively set at the middle and both ends of the mountain-shaped component. The first elastic piston support and the second elastic piston support are respectively used to set the first roller and the second roller to provide elastic support for the shaft from multiple directions and angles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a spindle vibration damping device for CNC machine tools proposed in this utility model;

[0018] Figure 2 This is a top view of a spindle vibration damping device for CNC machine tools proposed in this utility model;

[0019] Figure 3 This is a sectional view of the mounting mechanism and buffer mechanism of a spindle vibration damping device for CNC machine tools proposed in this utility model;

[0020] Figure 4This is a cross-sectional view of the mountain-shaped component of a spindle vibration damping device for CNC machine tools proposed in this utility model.

[0021] In the figure: 1. Shaft; 2. Stress support; 3. Mounting mechanism; 31. T-shaped cavity; 32. T-shaped connector; 33. Telescopic rubber pad; 34. Strong spring; 4. Buffer mechanism; 41. Assembly piece; 42. Mountain-shaped piece; 43. First port; 44. Second port; 45. First elastic piston support; 46. Second elastic piston support; 47. First roller; 48. Second roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A spindle vibration damping device for CNC machine tools includes four stress supports 2 equidistantly distributed around a spindle 1. It should be noted that the machine tool body is provided with two bearings for rotatably mounting the spindle 1, and the machine tool body is also provided with multiple frame structures corresponding to the stress supports 2. The multiple frames are equidistantly distributed along the spindle 1 to facilitate the installation of 3-5 sets of stress supports 2 assembled and connected in a square frame structure.

[0024] Each of the four stress supports 2 has an installation mechanism 3 for connecting the machine tool body. The installation mechanism 3 includes a three-way cavity 31 opened in the stress support 2. A T-shaped connector 32 for fixing and connecting the machine tool body is slidably fitted in the middle opening of the three-way cavity 31. Two telescopic rubber pads 33 are integrally connected to the T-shaped connector 32 and are slidably fitted in the openings at both ends of the three-way cavity 31. A strong spring 34 for fixing and connecting the T-shaped connector 32 is fixedly fitted on the telescopic rubber pads 33. It should be noted that hydraulic oil is provided in the two ends of the three-way cavity 31 to contact the telescopic rubber pads 33. The viscosity of the hydraulic oil can provide a certain degree of buffer support for the telescopic rubber pads 33. It is worth noting that locking through holes for mounting bolts are symmetrically opened on the outer end of the T-shaped connector 32. The two telescopic rubber pads 33 are symmetrically arranged on the inner end of the T-shaped connector 32 located in the three-way cavity 31. The frame has a countersunk hole structure corresponding to the locking through hole to facilitate the mounting and fixing of the T-shaped connector 32 on the frame.

[0025] Each of the four stress supports 2 is provided with a buffer mechanism 4 for elastically supporting the shaft 1. The buffer mechanism 4 includes an assembly 41 fixedly connected to the inside of the stress support 2. A mountain-shaped component 42 is integrally connected to the assembly 41. A first roller 47 and a second roller 48 that move and abut against the shaft 1 are movably arranged in the mountain-shaped component 42. In the initial state, only the first roller 47 is in contact with the shaft 1. When the shaft 1 vibrates and wobbles, pressure is applied to the first roller 47, causing the two second rollers 48 to be stretched by force so as to contact and support the shaft 1 from both sides. To further explain, a first port 43 corresponding to the first roller 47 is opened in the middle of the mountain-shaped component 42, and two second ports 44 corresponding to the second rollers 48 are symmetrically opened on both sides of the mountain-shaped component 42. To further explain, a first elastic piston support 45 for rotatably mounting the first roller 47 is movably fitted in the first port 43, and a second elastic piston support 46 for rotatably mounting the second roller 48 is movably fitted in the second port 44. It should be noted that both the first elastic piston support 45 and the second elastic piston support 46 are provided with a return spring that is fixedly connected to the mountain-shaped piece 42. The two extend and retract to provide support for the first roller 47 and the second roller 48.

[0026] Four stress supports 2 are connected end to end to form a square frame structure around the shaft 1, with the shaft 1 located at the center of the square frame. See the attached instruction manual for details. Figure 1 With appendix Figure 2 The shaft 1 is supported from four directions: front, back, left, and right.

[0027] Two second rollers 48 are symmetrically arranged on both sides of the first roller 47. When the first roller 47 is subjected to force, the two second rollers 48 are subjected to symmetrical reaction forces on the shaft 1, so as to provide a support for the shaft 1 to be able to return to its original position.

[0028] It should be noted that the specific model and specifications of shaft 1 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0029] The functional principle of this utility model can be explained through the following operation methods:

[0030] When the machine tool body vibrates, the T-shaped connector 32 moves along the three-way cavity 31, so that the two strong springs 34 can move in an extension and retraction motion, and the two telescopic rubber pads 33 can also move in extension and retraction under the support of their respective strong springs 34.

[0031] When the shaft 1 vibrates, it squeezes the first roller 47, causing the first roller 47 to press against the first elastic piston support 45 that contracts inward toward the first port 43. This causes the two second elastic piston supports 46 to extend outward toward the second port 44 of the mountain-shaped member 42, so that the two second rollers 48 contact and support the shaft 1.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spindle vibration damping device for CNC machine tools, comprising four stress supports (2) circumferentially distributed around a spindle (1), characterized in that, The four stress supports (2) are provided with an installation mechanism (3) for connecting the machine tool body on the outside, and the four stress supports (2) are provided with a buffer mechanism (4) for elastically supporting the shaft (1) on the inside. The four stress supports (2) are connected end to end to form a square frame structure around the shaft (1), and the shaft (1) is located at the center of the square frame; The installation mechanism (3) includes a three-way cavity (31) opened in the stress support (2). A T-shaped connector (32) for fixing and connecting the machine tool body is slidably fitted in the middle opening of the three-way cavity (31). Two telescopic rubber pads (33) are integrally connected to the T-shaped connector (32) and are slidably fitted in the openings at both ends of the three-way cavity (31). A strong spring (34) for fixing and connecting the T-shaped connector (32) is fixedly fitted on the telescopic rubber pads (33). The buffer mechanism (4) includes an assembly (41) fixedly connected to the inner side of the stress support (2). A mountain-shaped component (42) is integrally connected to the assembly (41). A first roller (47) and a second roller (48) that movably abut against the shaft (1) are movably arranged in the mountain-shaped component (42).

2. The spindle vibration damping device for CNC machine tools according to claim 1, characterized in that, The T-shaped connector (32) has symmetrical locking holes for installing bolts at its outer end, and two telescopic rubber pads (33) are symmetrically arranged on the inner end of the T-shaped connector (32) located in the three-way cavity (31).

3. The spindle vibration damping device for CNC machine tools according to claim 1, characterized in that, The mountain-shaped component (42) has a first port (43) at the middle end corresponding to the first roller (47), and two second ports (44) corresponding to the second roller (48) are symmetrically opened on both sides of the mountain-shaped component (42).

4. A spindle vibration damping device for CNC machine tools according to claim 3, characterized in that, The first port (43) is movably fitted with a first elastic piston support (45) for rotating and mounting the first roller (47), and the second port (44) is movably fitted with a second elastic piston support (46) for rotating and mounting the second roller (48).

5. A spindle vibration damping device for CNC machine tools according to claim 4, characterized in that, The two second rollers (48) are symmetrically arranged on both sides of the first roller (47).

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