Heat dissipation sleeve of numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a heat dissipation sleeve of a numerical control machine tool. The heat dissipation sleeve body is movably arranged on the surface of the numerical control main shaft in a sleeving mode, and a cooling cavity is formed in the heat dissipation sleeve; and the cooling water tank is fixedly installed on the upper side of the heat dissipation sleeve, a piston is attached to the inner surface of the cooling water tank in an airtight mode, and a first water pipe and a second water pipe are arranged on the upper side and the lower side of the piston correspondingly. When the numerical control main shaft rotates, the incomplete gear is driven to be meshed with sawteeth on the two sides of the inner tooth frame in a staggered mode, the piston can move up and down in the cooling water tank in a reciprocating mode, and then cooling water flows between the cooling cavity and the cooling water tank in a reciprocating mode through the first water pipe and the second water pipe and exchanges heat with the numerical control main shaft. Heat on the numerical control spindle is taken away, cooling of the numerical control spindle is achieved, and therefore the service life of the numerical control spindle is prolonged.

Description

Technical Field

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

[0002] CNC machine tools are short for numerical control machine tools. They are automated machine tools equipped with a program control system. This control system can logically process programs with control codes or other symbolic instructions, decode them, represent them with coded numbers, input them to the CNC device through an information carrier, and after calculation and processing, the CNC device sends out various control signals to control the machine tool's movements, automatically machining parts according to the shape and size required by the drawings.

[0003] Existing CNC lathes mainly rely on the rotation of the spindle to drive the operation of its machining station, thereby processing various parts. However, the spindle will generate friction with other components during rotation, and high temperatures will be generated under long-term friction. Excessive temperature will make the spindle more prone to damage, thus greatly reducing the service life of the spindle. In order to solve the above problems, we propose a heat dissipation sleeve for CNC machine tools. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the background art by proposing a heat dissipation sleeve for CNC machine tools.

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

[0006] A heat dissipation sleeve for CNC machine tools, comprising:

[0007] CNC spindle;

[0008] The heat dissipation sleeve body is movably sleeved on the surface of the CNC spindle, and a cooling chamber is formed inside the heat dissipation sleeve body;

[0009] A cooling water tank is fixedly installed on the upper side of the heat dissipation sleeve body, and a piston is airtightly fitted to the inner surface of the cooling water tank. A first water pipe and a second water pipe are respectively provided on the upper and lower sides of the piston, and the two ends of the first water pipe and the second water pipe are respectively fixedly connected to the surface of the heat dissipation sleeve body and the surface of the cooling water tank.

[0010] The flow assembly is used to deliver cooling water from the cooling water tank into the cooling chamber.

[0011] Preferably, the flow assembly includes an internal gear frame movably sleeved on the surface of the CNC spindle, an incomplete gear meshing inside the internal gear frame and the incomplete gear being fixedly installed on the surface of the CNC spindle, a bent connecting rod being fixedly installed on the top of the internal gear frame, and the other end of the bent connecting rod slidingly through to the top of the cooling water tank and fixed to the piston.

[0012] Preferably, a mounting bracket is fixedly installed on the top of the cooling water tank.

[0013] Preferably, the cross-sectional shape of the bent connecting rod is rectangular.

[0014] Preferably, the connection points of the first water pipe and the second water pipe to the heat dissipation sleeve body are respectively located at both ends of the cooling chamber.

[0015] Compared with existing technologies, the advantages of the CNC machine tool heat dissipation sleeve provided by this utility model are as follows:

[0016] This invention utilizes the misaligned meshing of the incomplete gear and the sawtooth on both sides of the internal gear frame when the CNC spindle rotates, enabling the piston to move up and down reciprocally within the cooling water tank. Then, through the first and second water pipes, cooling water flows back and forth between the cooling chamber and the cooling water tank, exchanging heat with the CNC spindle, carrying away the heat from the CNC spindle, and thus cooling the CNC spindle and extending its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a heat dissipation sleeve for a CNC machine tool proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of a heat dissipation sleeve for a CNC machine tool proposed in this utility model.

[0019] Figure 3 This is a partial structural schematic diagram of a heat dissipation sleeve for a CNC machine tool proposed in this utility model.

[0020] In the diagram: 1 CNC spindle, 2 heat dissipation sleeve body, 3 cooling chamber, 4 cooling water tank, 5 piston, 6 first water pipe, 7 second water pipe, 8 internal gear frame, 9 incomplete gear, 10 bent connecting rod, 11 fixed frame. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1 to 3 A heat dissipation sleeve for CNC machine tools, comprising:

[0023] CNC spindle 1; heat dissipation sleeve body 2, which is movably sleeved on the surface of CNC spindle 1, and a cooling chamber 3 is opened inside the heat dissipation sleeve body 2; cooling water tank 4, which is fixedly installed on the upper side of the heat dissipation sleeve body 2, and a fixing bracket 11 is fixedly installed on the top of the cooling water tank 4 for connecting to an external CNC machine tool to fix the cooling water tank 4 and the heat dissipation sleeve body 2.

[0024] Furthermore, the inner surface of the cooling water tank 4 is airtightly fitted with a piston 5. The upper and lower sides of the piston 5 are respectively provided with a first water pipe 6 and a second water pipe 7. The two ends of the first water pipe 6 and the second water pipe 7 are respectively fixedly connected to the surface of the heat dissipation sleeve body 2 and the surface of the cooling water tank 4. The connection points of the first water pipe 6 and the second water pipe 7 with the heat dissipation sleeve body 2 are respectively located at the two ends of the cooling chamber 3, which can ensure that when the cooling water flows in the cooling chamber 3, it can flow through the entire cooling chamber 3.

[0025] The flow assembly is used to deliver cooling water from the cooling water tank 4 into the cooling chamber 3. The flow assembly includes an internal gear frame 8 movably sleeved on the surface of the CNC spindle 1. An incomplete gear 9 meshes inside the internal gear frame 8 and is fixedly installed on the surface of the CNC spindle 1. A bent connecting rod 10 is fixedly installed on the top of the internal gear frame 8, and the other end of the bent connecting rod 10 slides through to the top of the cooling water tank 4 and is fixed to the piston 5. The cross-sectional shape of the bent connecting rod 10 is rectangular. By utilizing the limiting effect of the rectangle, it can be ensured that the bent connecting rod 10 and the internal gear frame 8 can only move vertically and will not deflect.

[0026] The working principle of this utility model is as follows:

[0027] In operation, when the CNC spindle 1 rotates, it drives the incomplete gear 9 to rotate synchronously. After the incomplete gear 9 meshes with the sawtooth on one side of the internal gear frame 8, the internal gear frame 8 moves downward. Conversely, when the incomplete gear 9 disengages from the sawtooth on that side of the internal gear frame 8 and meshes with the sawtooth on the other side, the internal gear frame 8 moves upward. Thus, under the continuous rotation of the incomplete gear 9, the internal gear frame 8 drives the piston 5 to move up and down reciprocally within the cooling water tank 4 via the bent connecting rod 10.

[0028] When the piston 5 moves downward, the cooling water in the cooling water tank 4 is squeezed into the cooling chamber 3 through the second water pipe 7, and then flows back into the cooling water tank 4 through the first water pipe 6. Conversely, when the piston 5 moves upward, the cooling water flows in the opposite direction, thereby realizing the reciprocating flow of cooling water between the cooling chamber 3 and the cooling water tank 4, generating heat exchange with the CNC spindle 1, carrying away the heat on the CNC spindle 1, and achieving the cooling of the CNC spindle 1, thereby extending the service life of the CNC spindle 1.

[0029] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0030] 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 heat dissipation sleeve for CNC machine tools, characterized in that, include: CNC spindle (1); The heat dissipation sleeve body (2) is movably sleeved on the surface of the CNC spindle (1), and a cooling chamber (3) is provided inside the heat dissipation sleeve body (2). A cooling water tank (4) is fixedly installed on the upper side of the heat dissipation sleeve body (2), and a piston (5) is airtightly attached to the inner surface of the cooling water tank (4). A first water pipe (6) and a second water pipe (7) are respectively provided on the upper and lower sides of the piston (5), and the two ends of the first water pipe (6) and the second water pipe (7) are respectively fixedly connected to the surface of the heat dissipation sleeve body (2) and the surface of the cooling water tank (4). A flow assembly is used to deliver cooling water from the cooling water tank (4) into the cooling chamber (3).

2. The heat dissipation sleeve for CNC machine tools according to claim 1, characterized in that, The flow assembly includes an internal gear frame (8) movably sleeved on the surface of the CNC spindle (1), an incomplete gear (9) meshing inside the internal gear frame (8), and the incomplete gear (9) is fixedly installed on the surface of the CNC spindle (1). A bent connecting rod (10) is fixedly installed on the top of the internal gear frame (8), and the other end of the bent connecting rod (10) slides through to the top of the cooling water tank (4) and is fixed to the piston (5).

3. A heat dissipation sleeve for CNC machine tools according to claim 1, characterized in that, A mounting bracket (11) is fixedly installed on the top of the cooling water tank (4).

4. A heat dissipation sleeve for CNC machine tools according to claim 2, characterized in that, The cross-sectional shape of the bent connecting rod (10) is rectangular.

5. A heat dissipation sleeve for CNC machine tools according to claim 1, characterized in that, The connection points of the first water pipe (6) and the second water pipe (7) to the heat dissipation sleeve body (2) are respectively located at both ends of the cooling chamber (3).

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