CN219683967U - Device for improving spindle accuracy of numerical control floor type boring and milling machine - Google Patents
Device for improving spindle accuracy of numerical control floor type boring and milling machine Download PDFInfo
- Publication number
- CN219683967U CN219683967U CN202321009760.XU CN202321009760U CN219683967U CN 219683967 U CN219683967 U CN 219683967U CN 202321009760 U CN202321009760 U CN 202321009760U CN 219683967 U CN219683967 U CN 219683967U
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- Prior art keywords
- main shaft
- oil
- cooling
- numerical control
- floor type
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- 238000003801 milling Methods 0.000 title claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 239000003921 oil Substances 0.000 claims description 64
- 239000010687 lubricating oil Substances 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Auxiliary Devices For Machine Tools (AREA)
Abstract
A device for improving the precision of a spindle of a numerical control floor type boring and milling machine. The cooling system mainly solves the problems that the existing cooling system of the numerical control floor type milling and boring machine is low in cooling speed and leads the part of the main shaft to be heated and deformed locally, so that the precision of the main shaft is reduced. Including milling axle (2), ram (1), mill axle (2) outside and be equipped with main shaft bearing (4), its characterized in that: a main shaft cooling sleeve (6) is arranged between the outside of the main shaft bearing (4) and the ram (1), a spiral oil groove (5) is formed in the outer surface of the main shaft cooling sleeve (6), and two ends of the oil groove (5) are respectively connected with a cooling oil inlet joint (7) and a cooling oil outlet joint (8). The device for improving the precision of the spindle of the numerical control floor type boring and milling machine can rapidly cool the spindle bearing, and avoid the part from being deformed by heat, thereby improving the precision of the spindle.
Description
Technical Field
The utility model relates to the field of numerical control machine tools, in particular to a device for improving the precision of a spindle of a numerical control floor type boring and milling machine.
Background
In the use process of the numerical control floor type boring and milling machine, the main shaft can generate heat when rotating and cutting, the main shaft is supported by the main shaft bearing to rotate and bear axial force, and the heat also mainly generates friction between the bearing rolling body and the inner ring and the outer ring of the bearing, so that the cooling of the bearing directly influences the improvement of the main shaft rotating speed and the stability of the precision, the main shaft precision is deteriorated due to the overhigh main shaft temperature, the main shaft bearing is seriously damaged, and the whole main shaft part needs to be overhauled. The existing cooling system is low in cooling speed and unobvious in effect, especially when the main shaft rotates at a high speed and the heat productivity is large under heavy scraps, the cooling system cannot cool the main shaft bearing very fast, heat accumulation is easy to occur, and the main shaft part is partially heated to deform, so that the main shaft precision is low.
Disclosure of Invention
The utility model provides a device for improving the precision of a spindle of a numerical control floor type milling and boring machine, which aims to solve the problems that the cooling speed of the cooling system of the traditional numerical control floor type milling and boring machine is low and the precision of the spindle is reduced due to the fact that a part of the spindle is locally heated and deformed.
The technical scheme of the utility model is as follows: the device comprises a milling shaft and a ram, wherein a main shaft bearing is arranged outside the milling shaft, a main shaft cooling sleeve is arranged between the outside of the main shaft bearing and the ram, a spiral oil groove is formed in the outer surface of the main shaft cooling sleeve, and two ends of the oil groove are respectively connected with a cooling oil inlet joint and a cooling oil outlet joint.
The cooling oil inlet joint and the cooling oil outlet joint are connected with the oil cooler through pipelines.
The ram is provided with through holes connected with two ends of the oil ditch, and the cooling oil inlet joint and the cooling oil outlet joint are respectively fixed on one through hole.
A spacer bush is arranged between two adjacent main shaft bearings, a lubricating oil channel is formed in the spacer bush, an oil channel communicated with the lubricating oil channel is formed in the milling shaft, and an annular oil groove communicated with the oil channel is formed in the inner surface of the milling shaft.
The end part of the milling shaft is connected with an end cover, an oiling channel connected with the lubricating oil channel is arranged on the end cover, and the end part of the oiling channel is connected with a nozzle tip.
The lubricating oil channel is communicated with the inside of the main shaft bearing.
The utility model has the following beneficial effects: by adopting the scheme, the device is provided with the main shaft cooling sleeve outside the main shaft bearing, the inner hole of the cooling sleeve is in direct contact with the outer ring of the bearing, cooling oil enters from one end of an oil groove on the main shaft cooling sleeve, and flows out from the other end of the oil groove, and heat generated by the bearing can be rapidly taken away when the cooling oil flows through the oil groove, so that the temperature rise of the main shaft is reduced, the influence of the main shaft part on the precision due to heating is reduced, and the precision of the main shaft can be ensured for a long time. Meanwhile, lubrication of the main shaft and the bearing is enhanced, and the main shaft precision is further improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure, the ram is 1-, the milling shaft is 2-, the cooling spacer bush is 3-, the spindle bearing is 4-, the oil groove is 5-, the spindle cooling sleeve is 6-, the cooling oil inlet joint is 7-, the cooling oil outlet joint is 8-, the oil cooler is 9-, the lubricating oil channel is 10-, the spacer bush is 11-, the oil duct is 12-, the oil groove is 13-, the oil injection channel is 14-and the end cover is 15-.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings:
the device for improving the precision of the spindle of the numerical control floor type boring and milling machine comprises a milling shaft 2 and a ram 1, wherein a plurality of spindle bearings 4 are arranged outside the milling shaft 2, a spindle cooling sleeve 6 is arranged between the outside of the spindle bearings 4 and the ram 1, and the spindle cooling sleeve 6 is fixed on the ram 1 through screws at the end part. The outer surface of the main shaft cooling sleeve 6 is provided with a spiral oil groove 5, and the oil groove 5 is uniformly distributed on the outer surface of the main shaft cooling sleeve 6, so that each main shaft bearing 4 can be cooled. The two ends of the oil groove 5 are respectively connected with a cooling oil inlet joint 7 and a cooling oil outlet joint 8. The ram 1 is provided with through holes at two ends corresponding to the oil grooves 5, the through holes are respectively connected with a cooling oil inlet joint 7 and a cooling oil outlet joint 8, and the cooling oil inlet joint 7 and the cooling oil outlet joint 8 are connected with an oil cooler 9 through pipelines. After the oil cooler 9 is started, cooling oil can enter the oil groove 5 along the cooling oil inlet joint 7, circulate in the oil groove 5 and then flow out from the cooling oil outlet joint 8 back into the oil cooler 9. Because the main shaft cooling sleeve 6 covers all main shaft bearings 4, and the main shaft cooling sleeve 6 is in direct contact with the outer ring of the bearing, the contact area is large, and therefore the cooling speed is improved, and the cooling effect is good.
The end part of the milling shaft 2 is connected with an end cover 15, an oiling channel 14 is formed in the end cover 15 for enhancing lubrication of the milling shaft 2 and the main shaft bearing 4, the end part of the oiling channel 14 is connected with a nozzle tip, and the oiling channel 14 is connected with the main shaft bearing 4. A spacer bush 11 is arranged between two adjacent main shaft bearings 4, a lubricating oil channel 10 is arranged on the spacer bush 11, and the lubricating oil channel 10 is communicated with the inside of the main shaft bearings 4. An oil duct 12 is formed in the milling shaft 2, an annular oil groove 13 communicated with the oil duct 12 is formed in the inner surface of the milling shaft 2, and the oil duct 12 is connected with the lubricating oil channel 10. During the work of the milling and boring machine, lubricating oil can be filled through the oil nozzle at regular intervals, and along with the operation of the milling shaft 2, the lubricating oil enters along the oil filling channel 14, the lubricating oil channel 10 and the oil duct 12 to lubricate the milling shaft 2 and the main shaft bearing 4, so that the abrasion of the milling shaft and the bearing is reduced, and the main shaft precision is improved.
The main shaft bearing 4 adopts a small outer diameter bearing, and reduces the diameter of the bearing rolling body, so that the linear speed of the bearing rolling body can be greatly reduced under the same rotating speed of the main shaft, and the heating value is reduced. The device improves the cooling speed of the main shaft bearing, solves the problems of large heating value, low cooling speed and the like of the main shaft under high-speed rotation and heavy chip cutting, and improves the lubrication effect of the bearing and the main shaft, thereby improving the precision of the main shaft.
Claims (6)
1. The utility model provides an improve numerical control floor type boring and milling machine main shaft precision device, includes mill axle (2), ram (1), mills axle (2) outside and is equipped with main shaft bearing (4), its characterized in that: a main shaft cooling sleeve (6) is arranged between the outside of the main shaft bearing (4) and the ram (1), a spiral oil groove (5) is formed in the outer surface of the main shaft cooling sleeve (6), and two ends of the oil groove (5) are respectively connected with a cooling oil inlet joint (7) and a cooling oil outlet joint (8).
2. The device for improving the spindle accuracy of a numerical control floor type boring and milling machine according to claim 1, wherein the device is characterized in that: the cooling oil inlet joint (7) and the cooling oil outlet joint (8) are connected with the oil cooler (9) through pipelines.
3. The device for improving the spindle accuracy of the numerical control floor type boring and milling machine according to claim 2, wherein the device is characterized in that: the ram (1) is provided with through holes connected with two ends of the oil groove (5), and the cooling oil inlet joint (7) and the cooling oil outlet joint (8) are respectively fixed on one through hole.
4. The device for improving the spindle accuracy of a numerical control floor type boring and milling machine according to claim 1, wherein the device is characterized in that: a spacer bush (11) is arranged between two adjacent main shaft bearings (4), a lubricating oil channel (10) is formed in the spacer bush (11), an oil duct (12) communicated with the lubricating oil channel (10) is formed in the milling shaft (2), and an annular oil groove (13) communicated with the oil duct (12) is formed in the inner surface of the milling shaft (2).
5. The device for improving the spindle accuracy of the numerical control floor type boring and milling machine according to claim 4, wherein the device comprises: the end part of the milling shaft (2) is connected with an end cover (15), an oiling channel (14) connected with the lubricating oil channel (10) is arranged on the end cover (15), and the end part of the oiling channel (14) is connected with an oil nozzle.
6. The device for improving the spindle accuracy of the numerical control floor type boring and milling machine according to claim 5, wherein the device comprises: the lubricating oil channel (10) is communicated with the inside of the main shaft bearing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321009760.XU CN219683967U (en) | 2023-04-28 | 2023-04-28 | Device for improving spindle accuracy of numerical control floor type boring and milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321009760.XU CN219683967U (en) | 2023-04-28 | 2023-04-28 | Device for improving spindle accuracy of numerical control floor type boring and milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219683967U true CN219683967U (en) | 2023-09-15 |
Family
ID=87967109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321009760.XU Active CN219683967U (en) | 2023-04-28 | 2023-04-28 | Device for improving spindle accuracy of numerical control floor type boring and milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219683967U (en) |
-
2023
- 2023-04-28 CN CN202321009760.XU patent/CN219683967U/en active Active
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