Main shaft drainage structure of horizontal machining center

Abstract

The utility model discloses a main shaft drainage structure of a horizontal machining center, which relates to the technical field of machining, and comprises a main shaft body, the outer end of the main shaft body is sleeved with a shell, two baffles are fixedly sleeved in the main shaft body, one baffle is fixedly connected with a convex block on the outer wall of one side opposite to the main shaft body, and the convex block is fixedly connected with the outer wall of the other side opposite to the main shaft body. A drain hole is formed in the lower end of the shell, a connecting column is fixedly connected to the outer wall of the main shaft body, a water scraping piece is fixedly connected to the other end of the connecting column, an air inlet cylinder and a guide cylinder are fixedly connected to the two sides of the connecting column respectively, a piston is movably sleeved with the guide cylinder, and a sliding rod is fixedly connected to the other end of the piston; through the water scraping piece and the air cylinder structure, the effects of scraping cooling water on the inner wall of the shell and accelerating discharging of the cooling water out of the shell are achieved, the problem that traditional cooling water is thrown out only through the high-speed rotation characteristic of a main shaft, and therefore the discharging efficiency is low through a drainage hole is solved, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a main shaft drainage structure of a horizontal processing center. Background Art

[0002] CNC milling machine is an automatic processing equipment developed on the basis of general milling machine. The processing technology of the two is basically the same, and the structure is somewhat similar. CNC milling machine is divided into two categories: without tool magazine and with tool magazine. Among them, CNC milling machine with tool magazine is also called machining center. Horizontal machining center is a kind of CNC milling machine. People will use horizontal machining center in the production of mechanical workpieces. The spindle in the horizontal machining center will drive the tool to process the workpiece. Since the spindle is in a state of high-speed rotation, it will generate a lot of heat. People will choose to spray cold water on the spindle to achieve the purpose of cooling the spindle. In the process of spraying cold water, a small amount of cold water will penetrate into the spindle through the gap between the shell and the spindle inside the horizontal machining center. If the cold water is not discharged in time, the cold water in the spindle will gradually increase. In the long run, it will affect the performance of the spindle, and then affect the processing of mechanical workpieces by the horizontal machining center. At the same time, the cold water entering the spindle will also dilute the lubricant of the internal bearing of the spindle, affecting the rotation of the bearing.

[0003] At present, the commonly used solution is to open a drainage hole on the outer casing, and use the high-speed rotation characteristics of the spindle itself to throw out the cooling water that has seeped between the spindle and the outer casing, so that it can be discharged through the drainage hole. However, this drainage method will cause some cooling water adhering to the inner wall of the outer casing to be unable to be discharged in time, and the drainage efficiency is low. Based on this, we propose an improved spindle drainage structure for a horizontal machining center. Utility Model Content

[0004] The main purpose of the utility model is to provide a spindle drainage structure for a horizontal machining center, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A spindle drainage structure for a horizontal machining center comprises a spindle body, an outer shell is sleeved on the outer end of the spindle body, two baffles are fixedly sleeved on the spindle body, one of the baffles is fixedly connected with a bulge on the outer wall on the opposite side of the spindle body, a drainage hole is opened at the lower end of the outer shell, a connecting column is fixedly connected to the outer wall of the spindle body, a wiper component is fixedly connected to the other end of the connecting column, an air intake cylinder and a guide cylinder are fixedly connected on both sides of the connecting column, a piston is movably sleeved in the guide cylinder, a sliding rod is fixedly connected to the other end of the piston, a convex ball is fixedly connected to the other end of the sliding rod, a spring is fixedly connected between the convex ball and the guide cylinder, an outlet valve is rotatably provided on the inner wall of the connecting column outlet, and an inlet valve is rotatably provided on the inner wall of the air intake cylinder.

[0007] As a further solution of the utility model, a groove is provided on the convex block, the groove matches the convex ball, and the convex block is arranged at a position on one side just above the drainage hole.

[0008] As a further solution of the utility model, the diameter of the upper opening of the drainage hole is larger than the diameter of the lower outlet, and the center of the lower opening of the connecting column and the center of the drainage hole outlet are always located on the same vertical horizontal plane.

[0009] As a further solution of the utility model, a wedge-shaped block is arranged in the wiper element, and the outer wall of the wedge-shaped block is arranged in contact with the inner wall of the shell.

[0010] As a further solution of the utility model, the spring is movably sleeved on the outer wall of the slide rod, and the slide rod is movably sleeved on the guide cylinder.

[0011] As a further solution of the utility model, sealing gaskets are arranged on inner walls on opposite sides of the two baffles, and bearings are arranged on inner walls on opposite sides of the two sealing gaskets.

[0012] As a further solution of the utility model, the two sealing pads are movably sleeved between the outer wall of the main shaft body and the inner wall of the shell, and the two baffles are rotatably sleeved on the outer wall of the main shaft body and fixedly sleeved on the inner wall of the shell.

[0013] The beneficial effects of the utility model are as follows:

[0014] By setting a connecting column, the characteristic of the wiper component driven by the connecting column to rotate when the main shaft rotates is utilized to scrape away the cooling water on the inner wall of the housing, which can effectively prevent the cooling water from adhering to the inner wall of the housing. At the same time, the convex ball is pressed each time it passes through the convex block, and then the piston is driven to move through the sliding rod, so that the gas in the connecting column is blown out from the outlet valve port. At the same time, the outlet valve port faces the drain hole, and the cooling water is blown into the drain hole, which can improve the cooling water discharge effect and prevent the cooling water from being taken away again by the wiper component due to too slow flow rate.

[0015] By arranging a sealing gasket at the outer end of the bearing and further arranging a baffle at the outer end of the sealing gasket, double protection is formed to prevent cooling water from entering the bearing and affecting the lubrication effect, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a bottom view schematic diagram of the external structure of a spindle drainage structure of a horizontal machining center according to the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a spindle drainage structure of a horizontal machining center according to the utility model;

[0018] Figure 3This is a schematic diagram of the internal structure of a guide cylinder of a spindle drainage structure of a horizontal machining center according to the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the external structure of a guide cylinder of a spindle drainage structure of a horizontal machining center.

[0020] In the figure: 1. main shaft body; 2. outer shell; 3. baffle; 4. bearing; 5. sealing gasket; 6. bump; 7. drain hole; 8. connecting column; 9. wiper; 10. intake pipe; 11. guide pipe; 12. sliding rod; 13. piston; 14. convex ball; 15. spring; 16. outlet valve; 17. inlet valve. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a spindle drainage structure of a horizontal machining center includes a spindle body 1, a shell 2 is sleeved on the outer end of the spindle body 1, two baffles 3 are fixedly sleeved inside the spindle body 1, one of the baffles 3 is fixedly connected to a protrusion 6 on the outer wall on the opposite side of the spindle body 1, a drainage hole 7 is opened at the lower end of the shell 2, a connecting column 8 is fixedly connected to the outer wall of the spindle body 1, and a wiper 9 is fixedly connected to the other end of the connecting column 8, and an air intake cylinder 10 and a guide cylinder 11 are fixedly connected on both sides of the connecting column 8, and the guide cylinder 11 is fixedly connected to the inner wall of the guide cylinder 11. A piston 13 is movably sleeved, and the other end of the piston 13 is fixedly connected to a slide rod 12, and the other end of the slide rod 12 is fixedly connected to a convex ball 14. A spring 15 is fixedly connected between the convex ball 14 and the guide cylinder 11. The spring 15 can drive the piston 13 to reset when the convex ball 14 is not under pressure. At this time, the outlet valve 16 is closed and the inlet valve 17 is opened, and the external airflow enters the connecting column 8 from the air inlet cylinder 10. The outlet valve 16 is rotatably provided on the inner wall of the outlet of the connecting column 8, and the inlet valve 17 is rotatably provided on the inner wall of the air inlet cylinder 10.

[0023] In this embodiment, a groove is provided on the protrusion 6, and the groove matches the convex ball 14 so that the convex ball 14 can be smoothly pressed when it contacts the protrusion 6. The protrusion 6 is arranged at a position on the side directly above the drainage hole 7, so that the gas in the connecting column 8 is ejected from the outlet toward the drainage hole 7.

[0024] In this embodiment, the upper opening diameter of the drain hole 7 is larger than the lower outlet diameter, and the lower opening center of the connecting column 8 and the outlet center of the drain hole 7 are always located on the same vertical horizontal plane, which is convenient for guiding the flow of cooling water.

[0025] In this embodiment, a wedge-shaped block is disposed in the wiper member 9 , and the outer wall of the wedge-shaped block is disposed in contact with the inner wall of the housing 2 , thereby improving the water removal effect of the wiper member 9 .

[0026] In this embodiment, the spring 15 is movably sleeved on the outer wall of the slide rod 12, and the slide rod 12 is movably sleeved on the guide cylinder 11. There is a gap between the slide rod 12 and the guide cylinder 11 for airflow in and out.

[0027] In this embodiment, sealing gaskets 5 are provided on the inner walls on the opposite sides of the two baffles 3, and bearings 4 are provided on the inner walls on the opposite sides of the two sealing gaskets 5. The two sealing gaskets 5 are movably sleeved between the outer wall of the main shaft body 1 and the inner wall of the outer shell 2. The two baffles 3 are rotatably sleeved on the outer wall of the main shaft body 1 and fixedly sleeved on the inner wall of the outer shell 2. The baffles 3 cooperate with the sealing gaskets 5 to form double protection for the bearings 4.

[0028] It should be noted that the utility model is a spindle drainage structure for a horizontal machining center. When in use, the spindle body 1 drives the wiper 9 to rotate through the connecting column 8 to scrape off the cooling water adhered to the inner wall of the outer shell 2, and then moves the wiper 9 to above the drainage hole 7. At this time, the convex ball 14 is compressed by the convex block 6, and the piston 13 will be driven to move in the guide cylinder 11 through the slide rod 12, and the gas in the connecting column 8 will be pressed out through the outlet valve 16, and the air flow will be ejected toward the drainage hole 7, which can effectively speed up the cooling water flow rate, improve the drainage effect, and save trouble.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A spindle drainage structure for a horizontal machining center, comprising a spindle body (1), wherein the outer end of the spindle body (1) is sleeved with a housing (2), and characterized in that: Two baffles (3) are fixedly sleeved in the main shaft body (1), one of which is fixedly connected to a convex block (6) on the outer wall of the side opposite to the main shaft body (1). A drainage hole (7) is provided at the lower end of the shell (2). A connecting column (8) is fixedly connected to the outer wall of the main shaft body (1), and the other end of the connecting column (8) is fixedly connected to a wiper component (9). An air intake cylinder (10) and a guide cylinder (11) are fixedly connected to the two sides of the connecting column (8). A piston (13) is movably sleeved in the guide cylinder (11), and the other end of the piston (13) is fixedly connected to a slide rod (12), and the other end of the slide rod (12) is fixedly connected to a convex ball (14). A spring (15) is fixedly connected between the convex ball (14) and the guide cylinder (11). An outlet valve (16) is rotatably provided on the inner wall of the outlet of the connecting column (8), and an inlet valve (17) is rotatably provided on the inner wall of the air intake cylinder (10).

2. The spindle drainage structure of a horizontal machining center according to claim 1, characterized in that: The convex block (6) is provided with a groove, the groove matches the convex ball (14), and the convex block (6) is arranged at a position on one side just above the drainage hole (7).

3. The spindle drainage structure of a horizontal machining center according to claim 1, characterized in that: The opening diameter of the upper end of the drainage hole (7) is larger than the outlet diameter of the lower end, and the center of the opening of the lower end of the connecting column (8) and the outlet center of the drainage hole (7) are always located on the same vertical horizontal plane.

4. The spindle drainage structure of a horizontal machining center according to claim 1, characterized in that: A wedge-shaped block is arranged inside the wiper element (9), and the outer wall of the wedge-shaped block is arranged in contact with the inner wall of the outer shell (2).

5. The spindle drainage structure of a horizontal machining center according to claim 1, characterized in that: The spring (15) is movably sleeved on the outer wall of the slide rod (12), and the slide rod (12) is movably sleeved on the guide cylinder (11).

6. The spindle drainage structure of a horizontal machining center according to claim 1, characterized in that: A sealing gasket (5) is provided on the inner wall of the two baffles (3) on one side opposite to each other, and a bearing (4) is provided on the inner wall of the two sealing gaskets (5) on one side opposite to each other.

7. The spindle drainage structure of a horizontal machining center according to claim 6, characterized in that: The two sealing pads (5) are movably sleeved between the outer wall of the main shaft body (1) and the inner wall of the outer shell (2), and the two baffles (3) are both rotatably sleeved on the outer wall of the main shaft body (1) and fixedly sleeved on the inner wall of the outer shell (2).

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