Annular jet type cooling structure of machine tool spindle

Abstract

The utility model relates to the technical field of machine tool spindle cooling, in particular to a machine tool spindle annular jet type cooling structure which comprises a spindle box, a spindle is arranged in the spindle box, the upper portion of a spindle shell is sleeved with a water pipe of a spiral structure, and the upper portion of the water pipe and the upper portion of the spindle are sleeved with a shell. A water passing channel communicated with the water pipe is arranged in the shell, a flange plate is arranged on the upper end face of the shell in a fixed structure mode and provided with an annular water way connected with the water passing channel, a nozzle used for spraying water to the upper end of the spindle is arranged on the upper end face of the flange plate in a fixed structure mode, and a water inlet of the nozzle is communicated with the annular water way. The side wall of the spindle is cooled through the water pipe of the spiral structure, then the water enters the annular water way in the flange plate and is sprayed to the upper end of the spindle through the nozzle, a bearing at the upper end of the spindle at the long nose end is cooled, the cooling structure is optimized, the cooling efficiency is improved, the service life of the spindle is prolonged, and the machining precision and stability are improved.

Description

Technical field:

[0001] The present application relates to the technical field of machine tool spindle cooling, and in particular to an annular jet cooling structure for a machine tool spindle. Background technology:

[0002] The Chinese utility model patent with application number 201720738984.2 - Cooling structure of external drive machine tool spindle, including a spindle housing and a cooling water pipe; the cooling water pipe is spiral and wound around the outside of the spindle housing; the spindle housing is provided with a water inlet and a water outlet; one end of the cooling water pipe is connected to the water inlet of the spindle housing; the other end of the cooling water pipe is connected to the water outlet.

[0003] This patent uses a spiral cooling water pipe wrapped around the outside of the spindle, which can only cool the heat-generating bearings at the rear end of the spindle mounting surface. The bearings at the upper end of the spindle at the long nose end cannot be cooled properly, resulting in the heat generated by the spindle during high-speed operation cannot be effectively dissipated, thereby affecting the performance and life of the spindle. Utility model content:

[0004] To solve the above technical problems, the present invention provides a ring-shaped spray cooling structure for a machine tool spindle. The technical problem to be solved is that the existing structure cannot cool the bearings at the front end of the spindle, and the cooling effect is limited. To solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A machine tool spindle annular jet cooling structure, comprising:

[0006] A spindle box, in which a spindle is arranged;

[0007] The water pipe is spirally sleeved on the upper part of the main shaft housing;

[0008] The housing is sleeved on the water pipe and the upper part of the main shaft and is fixedly connected to the main shaft box. A water passage communicating with the water pipe is provided in the housing;

[0009] The flange is fixedly mounted on the upper end face of the shell and has an annular waterway connected to the water passage.

[0010] The nozzle is used to spray water to the upper end of the main shaft. The nozzle is arranged on the upper end surface of the flange in a fixed structure, and the water inlet of the nozzle is connected to the annular water channel.

[0011] Furthermore, the spindle box is provided with a water inlet channel;

[0012] Both ends of the water pipe are respectively provided with joints, and the water pipe is connected to the water inlet channel and the water flow channel through the joints.

[0013] Furthermore, the housing includes a sleeve connected to the spindle box in a fixed structural manner, and an edge is fixedly provided on the upper end of the sleeve;

[0014] The flange is connected to the edge by means of a bolt structure.

[0015] Furthermore, the annular water channel is provided on the lower end surface of the flange, and the lower end surfaces of the flange on both sides of the annular water channel are provided with embedding grooves, and sealing rings are provided in the embedding grooves.

[0016] Furthermore, the nozzle is a universal nozzle.

[0017] Furthermore, the number of the universal nozzles is 6, and the 6 universal nozzles are evenly spaced and arranged on the upper end surface of the flange.

[0018] The beneficial effects of the utility model are as follows: the side wall of the main shaft is cooled by the spiral structure of the water pipe, then enters the annular water channel in the flange, and is sprayed to the upper end of the main shaft through the nozzle, so as to cool the bearing of the upper end part of the main shaft at the long nose end, optimize the cooling structure, improve the cooling efficiency, extend the life of the main shaft, and improve the processing accuracy and stability.

[0019] The annular water channel is opened at the lower end face of the flange to facilitate processing and subsequent maintenance, and the sealing ring is provided to ensure airtightness. Description of the drawings:

[0020] Figure 1 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model.

[0021] In the picture:

[0022] 1. Spindle box, 2. Spindle, 3. Water pipe, 4. Housing, 41. Sleeve, 42. Edge, 5. Flange, 6. Annular water channel, 7. Nozzle, 8. Water inlet channel, 9. Sealing ring. Specific implementation method:

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will now be described in further detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the present invention. The specific implementation scheme of the present invention is as follows:

[0024] A circular jet cooling structure for a machine tool spindle comprises a spindle box 1, wherein a spindle 2 is arranged in the spindle box 1, a water pipe 3 with a spiral structure is provided on the upper part of the outer shell of the spindle 2, a shell 4 is provided on the water pipe 3 and the upper part of the spindle 2, the shell 4 is fixedly connected to the spindle box 1, a water passage communicating with the water pipe 3 is provided in the shell 4, a flange 5 is provided on the upper end face of the shell 4 in a fixed structure, an annular waterway 6 connected to the water passage is provided on the flange 5, a nozzle 7 for spraying water on the upper end of the spindle 2 is provided on the upper end face of the flange 5 in a fixed structure, and the water inlet of the nozzle 7 is connected to the annular waterway 6. The side wall of the spindle is cooled by the spiral water pipe 3, then enters the annular waterway 6 in the flange 5, and is then sprayed onto the upper end of the spindle 2 through the nozzle 7, thereby cooling the bearing of the upper end portion of the spindle 2 at the long nose end, thereby optimizing the cooling structure, improving the cooling efficiency, extending the life of the spindle, and improving the machining accuracy and stability.

[0025] It should be noted that the spindle box 1 is provided with a water inlet channel 8, and joints are provided at both ends of the water pipe 3. The water pipe 3 is connected to the water inlet channel 8 and the water passage through the joints, which facilitates connection and replacement of the water pipe.

[0026] The housing 4 includes a sleeve 41 connected to the spindle box 1 in a fixed structural manner. An edge 42 is fixedly provided on the upper end of the sleeve 41 to reserve a position for the placement of the water pipe 3.

[0027] The annular water channel 6 is provided at the lower end surface of the flange 5 , and the flange 5 is connected to the edge 42 by a bolt structure, which facilitates processing and subsequent maintenance, and cleans impurities in the annular water channel 6 to avoid blockage.

[0028] The lower end surfaces of the flanges 5 on both sides of the annular water channel 6 are provided with embedding grooves, and sealing rings 9 are arranged in the embedding grooves to ensure airtightness.

[0029] The nozzle 7 is a universal nozzle, which can adjust the water drop point in time according to the size of the water flow. In order to ensure comprehensive cooling of the upper end face of the main shaft, the number of universal nozzles 7 is set to 6, and the 6 universal nozzles 7 are evenly spaced on the upper end face of the flange 5.

[0030] The working principle and working process of this utility model are as follows:

[0031] During the operation of the main shaft 2, cooling water is injected from the water inlet channel 8, and the cooling water moves spirally through the water pipe 3 to the water passage in the shell 4, enters the annular waterway 6 through the water channel, and is then sprayed onto the upper end face of the main shaft 2 through the nozzle 7 for cooling.

[0032] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Although the present invention has been described based on a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments are conceivable within the scope of the present invention described herein.

Claims

1. A machine tool spindle annular spray cooling structure, characterized in that: include: A spindle box (1), wherein a spindle (2) is arranged in the spindle box (1); A water pipe (3) is provided in a spiral structure and is sleeved on the upper portion of the outer shell of the main shaft (2); A housing (4) is sleeved on the water pipe (3) and the upper portion of the main shaft (2) and is fixedly connected to the main shaft box (1). A water passage communicating with the water pipe (3) is provided in the housing (4); A flange (5) is arranged on the upper end surface of the housing (4) in a fixed structure, and the flange (5) is provided with an annular waterway (6) connected to the water passage; A nozzle (7) for spraying water on the upper end of the main shaft (2) is arranged on the upper end surface of the flange (5) in a fixed structure, and a water inlet of the nozzle (7) is connected to the annular water channel (6).

2. The annular spray cooling structure for a machine tool spindle according to claim 1, characterized in that: The spindle box (1) is provided with a water inlet channel (8); Joints are respectively provided at both ends of the water pipe (3), and the water pipe (3) is connected to the water inlet channel (8) and the water flow channel respectively through the joints.

3. The annular spray cooling structure for a machine tool spindle according to claim 1, characterized in that: The housing (4) includes a sleeve (41) connected to the spindle box (1) in a fixed structural manner, and an edge (42) is fixedly provided on the upper end of the sleeve (41); The flange (5) is connected to the edge (42) by means of a bolt structure.

4. The annular spray cooling structure for a machine tool spindle according to claim 3, characterized in that: The annular water channel (6) is provided on the lower end surface of the flange (5), and the lower end surfaces of the flange (5) on both sides of the annular water channel (6) are provided with embedding grooves, in which sealing rings (9) are provided.

5. The annular spray cooling structure for a machine tool spindle according to claim 1, characterized in that: The nozzle (7) is a universal nozzle.

6. The annular spray cooling structure for a machine tool spindle according to claim 5, characterized in that: The number of the universal nozzles (7) is 6, and the 6 universal nozzles (7) are evenly spaced and arranged on the upper end surface of the flange (5).

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