Telescopic numerical control machine tool tailstock spindle

Abstract

The utility model discloses a telescopic numerical control machine tool tailstock main shaft which comprises a main shaft body, a main shaft sleeve shell is installed on the outer side of the main shaft body in a rotating mode, a bearing matched with the main shaft body is fixedly installed on the side wall of the main shaft sleeve shell, a shielding sleeve is connected to the side wall of the bearing in a rotating mode, and the shielding sleeve is arranged on the outer side of the main shaft body in a sleeving mode. And a cleaning cotton mounting column is slidably mounted on the side wall of the bearing, cleaning cotton is fixedly mounted on the cleaning cotton mounting column, the cleaning cotton is attached to the main shaft and the shielding sleeve, and a pressure detector is further fixedly mounted on the side wall of the bearing. The cleaning assembly and the shielding sleeve can prevent oil dirt from splashing, and meanwhile, in the rotating process of the main shaft, the main shaft and the shielding sleeve can be cleaned, and flowing-out lubricating oil is cleaned up; and a structure for detection is further installed, so that whether the cleaning cotton needs to be replaced or not can be conveniently judged, and meanwhile, whether oil leakage and other abnormalities occur to the equipment or not can also be judged.

Description

Technical Field

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

[0002] CNC machine tools are highly automated machine tools that use computers to control the movement and machining process of the machine tool to achieve precise machining of workpieces. Compared with traditional machining tools, CNC machine tools have advantages such as higher machining accuracy, higher production efficiency and lower labor costs. Therefore, CNC machine tools have been widely used in the manufacturing industry and have become one of the important pillars of modern manufacturing.

[0003] When the spindle of a CNC machine tool is working, a small amount of lubricating oil will leak from the telescopic connection of the spindle due to its telescopic nature. The existing spindle lacks a structure to shield and clean the lubricating oil, which causes the lubricating oil to splash out and pollute the surrounding equipment and environment. At the same time, there is a lack of a detection structure for lubricating oil leakage. When the device malfunctions and a large amount of lubricating oil leaks, it cannot react in time, which is not conducive to the use of the device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a retractable CNC machine tool tailstock spindle.

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

[0006] A retractable CNC machine tool tailstock spindle includes a spindle, a spindle housing rotatably mounted on the outer side of the spindle, a bearing matching the spindle fixedly mounted on the side wall of the spindle housing, a shielding sleeve rotatably connected to the side wall of the bearing, the shielding sleeve being fitted onto the outer side of the spindle, a cleaning cotton mounting post slidably mounted on the side wall of the bearing, a cleaning cotton fixedly mounted on the cleaning cotton mounting post, and the cleaning cotton in contact with both the spindle and the shielding sleeve, a pressure detector also fixedly mounted on the side wall of the bearing, the cleaning cotton mounting post pressing against the top of the pressure detector, and a transmission structure mounted on the bearing.

[0007] Preferably, the transmission structure includes a gear fixedly mounted on the end face of the main shaft, a rotating shaft rotatably connected to the end of the bearing near the first gear, a second gear fixedly sleeved on the rotating shaft and meshing with the first gear, a fourth gear rotatably connected to the side wall of the bearing via a mounting shaft, a third gear corresponding to the fourth gear fixedly sleeved on the rotating shaft, a fifth gear corresponding to the fourth gear fixedly sleeved on the outer side of the shielding sleeve, the fifth gear meshing with the fourth gear, and the fourth gear meshing with the third gear.

[0008] Preferably, the spindle housing has multiple straight threaded holes, and the spindle housing is fixedly installed through the straight threaded holes.

[0009] Preferably, the cleaning cotton mounting post and the bearing are slidably connected by a locking block.

[0010] Preferably, the spindle housing is equipped with a control terminal corresponding to the pressure detector.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This equipment is equipped with a cleaning component. The shielding sleeve prevents oil splattering and cleans the spindle and shielding sleeve during spindle rotation, removing any leaked lubricating oil. It also has a detection structure that can easily determine whether the cleaning cotton needs to be replaced and whether there are any abnormalities such as oil leaks in the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a retractable CNC machine tool tailstock spindle proposed in this utility model;

[0014] Figure 2 This is a three-dimensional side view of the retractable CNC machine tool tailstock spindle proposed in this utility model.

[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Spindle housing, 2. Straight threaded hole, 3. Gear 4, 4. Gear 3, 5. Shaft, 6. Gear 2, 7. Gear 1, 8. Bearing, 9. Gear 5, 10. Covering sleeve, 11. Connecting bracket, 12. Spindle, 13. Pressure detector, 14. Cleaning cotton mounting post, 15. Cleaning cotton. Detailed Implementation

[0017] Reference Figures 1-3A retractable CNC machine tool tailstock spindle includes a spindle 12, a spindle housing 1 rotatably mounted on the outer side of the spindle 12, a bearing 8 matching the spindle 12 fixedly mounted on the side wall of the spindle housing 1, a shielding sleeve 10 rotatably connected to the side wall of the bearing 8 to prevent oil splashing, the shielding sleeve 10 being fitted onto the outer side of the spindle 12, and a cleaning cotton mounting post 14 slidably mounted on the side wall of the bearing 8, with a cleaning cotton 15 fixedly mounted on the cleaning cotton mounting post 14. The cleaning cotton 15 is in contact with the spindle 12 and the shielding sleeve 10. The pressure detector 13 is also fixedly installed on the side wall of the bearing 8. The cleaning cotton mounting post 14 is pressed on the top of the pressure detector 13. The transmission structure is installed on the bearing 8. The shielding sleeve 10 can effectively prevent the lubricating oil from splashing everywhere during the operation of the spindle 12. The cleaning cotton 15 and the cleaning cotton mounting post 14 fixed on the side wall of the bearing 8 can effectively clean the lubricating oil adhering to the spindle 12 and the shielding sleeve 10.

[0018] When the device is running, the main shaft 12 extends and rotates. The cleaning cotton 15 cleans the main shaft 12 and the shielding sleeve 10 simultaneously. As cleaning progresses, the weight of the cleaning cotton 15 increases, and the pressure on the pressure detector 13 increases. When the pressure detector 13 senses a gradually increasing pressure signal, it sends the signal to the control system. The real-time pressure of the pressure detector 13 and the pressure change line can be seen through an external display device. When the pressure reaches a certain value, the cleaning cotton 15 needs to be replaced. If the angle of the pressure change line is too large, it indicates that there may be a lubricating oil leak in the main shaft 12, which needs to be dealt with immediately. The functions of the control device and the pressure sensor 13 mentioned above are relatively mature and well-known technologies, so they will not be described in detail.

[0019] The transmission structure includes a gear 7 fixedly mounted on the side wall of the bearing 8. A rotating shaft 5 is rotatably connected to one end of the bearing 8 near the gear 7. A gear 6 is fixedly sleeved on the rotating shaft 5 and meshes with the gear 7. A gear 3 is rotatably connected to the side wall of the bearing 8 via a mounting shaft. A gear 4 corresponding to the gear 3 is fixedly sleeved on the rotating shaft 5. A gear 9 corresponding to the gear 3 is fixedly sleeved on the outer side of the shielding sleeve 10. The gear 9 meshes with the gear 3, and the gear 3 meshes with the gear 4. This causes the main shaft 12 and the shielding sleeve 10 to rotate in opposite directions. Therefore, the cleaning cotton 15 and the cleaning cotton mounting post 14 have a better cleaning effect on the main shaft 12 and the shielding sleeve 10. The main shaft 12 and the rotating shaft 5 are fixedly connected by a connecting bracket 11.

[0020] The rotation of the main shaft 12 will drive the first gear 7 to rotate. When the first gear 7 rotates, it will cause the second gear 6 to rotate. The second gear 6 will drive the rotating shaft 5 to rotate. The rotating shaft 5 will drive the third gear 4 to rotate. The third gear 4 will drive the fourth gear 3 to rotate. The fourth gear 3 will drive the fifth gear 9 to rotate. Under the combined action of multiple gears, the fifth gear 9 will drive the shielding sleeve 10 to rotate. The rotation direction of the fifth gear 9 is opposite to that of the first gear 7, that is, the rotation direction of the shielding sleeve 10 is opposite to that of the main shaft 12.

[0021] The connecting bracket 11 is rotatably connected to the main shaft 12 and the rotating shaft 5. The rotating shaft 5 adopts a telescopic structure. When the main shaft 12 rotates, the rotating shaft 5 rotates in the opposite direction to the main shaft 12. When the main shaft 12 extends or retracts, the rotating shaft 5 extends or retracts synchronously with the main shaft 12, so there will be no motion interference.

[0022] The spindle sleeve 1 has multiple straight threaded holes 2, and the spindle sleeve 1 is fixedly installed through the straight threaded holes 2. This installation method makes the spindle sleeve 1 more securely installed.

[0023] The cleaning cotton mounting column 14 is slidably connected to the side wall of the bearing 8 via a locking block, allowing the cleaning cotton mounting column 14 to slide, thereby enabling the pressure detector 13 to operate normally.

[0024] The spindle housing 1 is equipped with a control terminal corresponding to the pressure detector 13. The pressure detector 13 and the control terminal are existing equipment, so their working principle will not be elaborated in detail. The control terminal can use the data and growth rate of the pressure detector 13 to determine whether the cleaning cotton 15 should be replaced, whether there is oil leakage, and other issues.

[0025] In this invention, the worker first installs and fixes the spindle sleeve 1 and the spindle 12 through multiple straight threaded holes 2. When the device is running, the spindle 12 extends and rotates. Under the action of the connecting bracket 11, the rotating shaft 5 extends synchronously with the spindle 12 to avoid motion interference. During the rotation of the spindle 12, the rotation of the spindle 12 will drive the first gear 7 to rotate. When the first gear 7 rotates, it will cause the second gear 6 to rotate. The second gear 6 drives the rotating shaft 5 to rotate. The rotating shaft 5 drives the third gear 4 to rotate. The third gear 4 drives the fourth gear 3 to rotate. The fourth gear 3 drives the fifth gear 9 to rotate. Under the combined action of multiple gears, the fifth gear 9 drives the shielding sleeve 10 to rotate. The rotation direction of the fifth gear 9 is opposite to that of the first gear 7, i.e., the shielding sleeve... The rotation direction of the cylinder 10 is opposite to that of the main shaft 12. Since the cleaning cotton 15 and the cleaning cotton mounting post 14 are fixed to the side wall of the bearing 8 and closely attached to the main shaft 12 and the shielding sleeve 10, the cleaning cotton 15 will clean the main shaft 12 and the shielding sleeve 10 simultaneously during the rotation of the main shaft 12 and the shielding sleeve 10. As the cleaning proceeds, the weight of the cleaning cotton 15 increases, and the pressure on the pressure detector 13 increases. Through the control system, the real-time pressure of the pressure detector 13 and the pressure change line can be seen. When the pressure reaches a certain value, it needs to be replaced. If the angle of the pressure change line is too large, it indicates that there may be a lubricating oil leak in the main shaft 12, which needs to be dealt with immediately.

Claims

1. A retractable CNC machine tool tailstock spindle comprising a spindle (12), characterised in that, The outer side of the main shaft (12) is rotatably installed with a main shaft sleeve shell (1), the side wall of the main shaft sleeve shell (1) is fixedly installed with a bearing (8) matched with the main shaft (12), the side wall of the bearing (8) is rotatably connected with a shielding sleeve (10), the shielding sleeve (10) is sleeved on the outer side of the main shaft (12), the side wall of the bearing (8) is slidably installed with a cleaning cotton mounting column (14), the cleaning cotton mounting column (14) is fixedly installed with cleaning cotton (15), and the cleaning cotton (15) is attached to the main shaft (12) and the shielding sleeve (10), the side wall of the bearing (8) is also fixedly installed with a pressure detector (13), the cleaning cotton mounting column (14) is pressed on the top end of the pressure detector (13), and the bearing (8) is installed with a transmission structure.

2. A retractable CNC machine tool tailstock spindle according to claim 1, characterised in that, The transmission structure comprises a gear one (7) fixedly installed on the side wall of the main shaft (12), one end of the bearing (8) close to the gear one (7) is rotatably connected with a rotating shaft (5), the rotating shaft (5) is fixedly sleeved with a gear two (6), and the gear two (6) is engaged with the gear one (7), the side wall of the bearing (8) is rotatably connected with a gear four (3) through a mounting shaft, the rotating shaft (5) is fixedly sleeved with a gear three (4) corresponding to the gear four (3), the outer side of the shielding sleeve (10) is fixedly sleeved with a gear five (9) corresponding to the gear four (3), the gear five (9) and the gear three (4) are engaged with the gear four (3), and the main shaft (12) and the rotating shaft (5) are fixedly connected through a connecting bracket (11).

3. A retractable CNC machine tool tailstock spindle according to claim 2, characterised in that, The connecting bracket (11) is rotatably connected between the main shaft (12) and the rotating shaft (5), and the rotating shaft (5) adopts a telescopic structure.

4. The retractable CNC machine tool tailstock spindle of claim 1 wherein, A plurality of straight thread holes (2) are formed in the main shaft sleeve shell (1), and the main shaft sleeve shell (1) is fixedly installed through the straight thread holes (2).

5. The retractable CNC machine tool tailstock spindle of claim 1 wherein, The cleaning cotton mounting column (14) and the bearing (8) are slidably connected through a clamping block.

6. A retractable CNC machine tool tailstock spindle according to claim 1, characterized in that, The main shaft sleeve shell (1) is provided with a control terminal corresponding to the pressure detector (13).

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