CN217044626U - High-rigidity centre for hard turning - Google Patents
High-rigidity centre for hard turning Download PDFInfo
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- CN217044626U CN217044626U CN202122714465.1U CN202122714465U CN217044626U CN 217044626 U CN217044626 U CN 217044626U CN 202122714465 U CN202122714465 U CN 202122714465U CN 217044626 U CN217044626 U CN 217044626U
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- bearing
- tailstock
- front bearing
- mandrel
- side wall
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Abstract
The utility model discloses a hard turning is top with high rigidity, tailstock sleeve, a live center and dabber including the lathe, tailstock sleeve, a live center and dabber three's the central axis coincidence setting, the dabber lateral wall has cup jointed the interior spacer of fore bearing, be equipped with the guiding mechanism who is used for adjusting the interior spacer position of fore bearing on the tailstock sleeve, guiding mechanism is including cup jointing the cylindrical roller bearing at the dabber lateral wall, the dabber lateral wall is equipped with fore bearing lock nut. The utility model discloses set up guiding mechanism, supported end angular contact ball bearing with top preceding sealed lid through front bearing gland, cylindrical roller bearing outer lane, front bearing outer space ring and lead screw and pressed on the tailstock sleeve, the outer lane of front bearing is fixed like this, and cylindrical roller bearing supports the end bearing cooperation with the lead screw and is in the same place, has realized the top high radial stiffness of tailstock and big axial bearing capacity, has improved the top cutting rigidity and the rotation precision of tailstock.
Description
Technical Field
The utility model relates to a top technical field of lathe especially relates to hard turning is top with high rigidity.
Background
The lathe in the manufacturing industry mainly utilizes lathe tool to carry out lathe work to the rotating workpiece, is mainly used for processing axle, dish, cover and other work pieces that have the surface of revolution, and its structure mainly divide into: the device comprises a main shaft box, a tail frame, a feed rod, a lead screw, a slide carriage box, a lathe bed, a feed box and a tool rest.
The existing lathe tailstock rotating centre is basically divided into two structures: 1. live center dead sleeve's structure, 2, dead center live sleeve structure. Due to the structural limitation of the live center dead sleeve structure, the specification of a bearing of a live center does not belong to an ultra-precision type, and the bearing is small, so that the rigidity and precision of the live center dead sleeve structure cannot meet the requirements of ultra-precision hard turning; dead top loose tube structure, this kind of top mainly used large-scale lathe, top sleeve can be rotatory, and it is fixed top, and it is higher top to rigidity and required precision, difficult production, therefore the top rigidity of current hard turning tailstock is not enough, and the top precision of hard turning tailstock is not high, and the top axial bearing capacity of hard turning tailstock is not enough, when using the drive top, the bearing generates heat easily, so, need design hard turning with high rigidity top to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art, and providing a high-rigidity tip for hard turning.
In order to realize the purpose, the utility model adopts the following technical scheme:
the high-rigidity center for hard turning comprises a tailstock sleeve, a movable center and a mandrel of a machine tool, wherein the central axes of the tailstock sleeve, the movable center and the mandrel are arranged in a superposition mode, a front bearing inner spacer is sleeved on the side wall of the mandrel, an adjusting mechanism used for adjusting the position of the front bearing inner spacer is arranged on the tailstock sleeve, the adjusting mechanism comprises a cylindrical roller bearing sleeved on the side wall of the mandrel, a front bearing locking nut is arranged on the side wall of the mandrel, threads matched with the front bearing locking nut are arranged on the side wall of the mandrel, and a mandrel installing mechanism is arranged in the tailstock sleeve.
Preferably, the mounting mechanism comprises three angular contact ball bearings sleeved on the side wall of the mandrel, the three angular contact ball bearings are arranged far away from the movable center, and the axial precision of the angular contact ball bearing 9 is P2.
Preferably, the precision of the cylindrical roller bearing is P4, and the inner hole of the cylindrical roller bearing is 1: 12 taper.
Preferably, a tail seat rear end cover is arranged at the short part of the right side of the tail seat sleeve, and the cross section of the tail seat rear end cover is T-shaped.
Preferably, a front bearing outer space ring is sleeved on the side wall of the front bearing inner space ring, and the side wall of the front bearing outer space ring is in contact with the inner wall of the tailstock sleeve.
Preferably, a front bearing gland is sleeved on the side wall of the front bearing locking nut, and a tip front sealing cover is sleeved on the front bearing gland.
The utility model discloses in, following beneficial effect has:
the device is provided with an adjusting mechanism, a tip front sealing cover is pressed on a tailstock sleeve through a front bearing pressing cover, a cylindrical roller bearing outer ring, a front bearing outer spacer ring and a lead screw supporting end angular contact ball bearing, so that the outer rings of a front bearing and a rear bearing are fixed, and the cylindrical roller bearing and the lead screw supporting end bearing are matched together, thereby realizing high radial rigidity and large axial bearing capacity of the tailstock tip, improving the cutting rigidity and the rotation precision of the tailstock tip, meeting the clamping of double tops of a bearing roller and improving the rigidity and the precision of a machine tool;
1. the device is provided with the lead screw supporting end angular contact ball bearing, the axial precision of the angular contact ball bearing is P2, and the rigidity and the bearing capacity of the device are improved due to the fact that the axial rigidity and the bearing capacity of the angular contact ball bearing are extremely high;
2. this device has set up the tailstock rear end cap, and the tailstock rear end cap is installed on the tailstock sleeve, plays dustproof and sealed effect to the dust and the sealed effect of device have been improved.
Drawings
Fig. 1 is a schematic structural view of a high-rigidity center for hard turning according to the present invention;
fig. 2 is a front view of the high rigidity center for hard turning according to the present invention.
In the figure: the device comprises a movable center 1, a center front sealing cover 2, a front bearing gland 3, a front bearing lock nut 4, a cylindrical roller bearing 5, a front bearing inner spacer 6, a front bearing outer spacer 7, a mandrel 8, an angular contact ball bearing 9, a tailstock sleeve 10 and a tailstock rear end cover 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-2, the high-rigidity center for hard turning comprises a tailstock sleeve 10 of a machine tool, a movable center 1 and a mandrel 8, wherein the central axes of the tailstock sleeve 10, the movable center 1 and the mandrel 8 are superposed, a front bearing inner spacer ring 6 is sleeved on the side wall of the mandrel 8, a front bearing outer spacer ring 7 is sleeved on the side wall of the front bearing inner spacer ring 6, and the side wall of the front bearing outer spacer ring 7 is in contact with the inner wall of the tailstock sleeve 10.
Be equipped with the guiding mechanism who is used for adjusting the interior ring 6 position of front bearing on the tailstock sleeve 10, guiding mechanism is including cup jointing at the cylindrical roller bearing 5 of 8 lateral walls of dabber, and 8 lateral walls of dabber are equipped with front bearing lock nut 4, and 8 lateral walls of dabber are equipped with 4 complex screws of front bearing lock nut, and 5 precisions of cylindrical roller bearing are P4, and 5 holes of cylindrical roller bearing are 1: 12 taper.
The utility model discloses in, be equipped with in the tailstock sleeve 10 and be used for installing dabber 8 installation mechanism, installation mechanism is including cup jointing at the three angular contact ball bearing 9 of 8 lateral walls of dabber, and movable centre 1 setting is kept away from to three angular contact ball bearing 9, and angular contact ball bearing 9's axial precision is P2, and angular contact ball bearing 9 supports end angle contactor bearing for the lead screw, and the axial rigidity that the lead screw supported end angle contactor bearing is very big with bearing capacity.
The utility model discloses in, tailstock sleeve 10 right side short portion is equipped with tailstock rear end cap 11, and tailstock rear end cap 11 cross-section is T shape, and tailstock rear end cap 11 is installed on tailstock sleeve 10, plays dustproof and sealed effect.
The utility model discloses in, 4 lateral walls of front bearing lock nut have cup jointed front bearing gland 3, have cup jointed top front seal lid 2 on the front bearing gland 3.
When the tailstock center front sealing cover is used, the center front sealing cover 2 is pressed on the tailstock sleeve 10 through the front bearing pressing cover 3, the outer ring of the cylindrical roller bearing, the outer space ring 7 of the front bearing and the angular contact ball bearing 9, so that the outer ring of the front bearing and the outer ring of the rear bearing are fixed, the cylindrical roller bearing 5 is matched with the angular contact ball bearing 9, high radial rigidity and large axial bearing capacity of the tailstock center are achieved, and rigidity and rotation accuracy of a machine tool in a hard turning process are guaranteed.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, and the technical solution and the practical idea of the present invention should be covered within the protection scope of the present invention by equivalent replacement or change.
Claims (6)
1. The high-rigidity center for hard turning comprises a tailstock sleeve (10), a movable center (1) and a mandrel (8) of a machine tool and is characterized in that the central axes of the tailstock sleeve (10), the movable center (1) and the mandrel (8) are arranged in a coincident mode, a front bearing inner spacer ring (6) is sleeved on the side wall of the mandrel (8), an adjusting mechanism used for adjusting the position of the front bearing inner spacer ring (6) is arranged on the tailstock sleeve (10), the adjusting mechanism comprises a cylindrical roller bearing (5) sleeved on the side wall of the mandrel (8), a front bearing locking nut (4) is arranged on the side wall of the mandrel (8), threads matched with the front bearing locking nut (4) are arranged on the side wall of the mandrel (8), and a mandrel (8) installing mechanism is arranged in the tailstock sleeve (10).
2. The high-rigidity center for hard turning according to claim 1, characterized in that the mounting mechanism comprises three angular contact ball bearings (9) sleeved on the side wall of the mandrel (8), the three angular contact ball bearings (9) are arranged far away from the movable center (1), and the axial precision of the angular contact ball bearings (9) is P2.
3. The high rigidity center for hard turning according to claim 1, wherein the precision of the cylindrical roller bearing (5) is P4, and the inner bore of the cylindrical roller bearing (5) is 1: 12 taper.
4. The high-rigidity center for hard turning according to claim 1, wherein a tailstock rear end cover (11) is arranged on the right short part of the tailstock sleeve (10), and the tailstock rear end cover (11) is T-shaped in cross section.
5. The high-rigidity center for hard turning according to claim 1, characterized in that a front bearing outer spacer ring (7) is sleeved on the side wall of the front bearing inner spacer ring (6), and the side wall of the front bearing outer spacer ring (7) is in contact with the inner wall of the tailstock sleeve (10).
6. The high-rigidity center for hard turning according to claim 1, wherein a front bearing gland (3) is sleeved on the side wall of the front bearing locking nut (4), and a center front sealing cover (2) is sleeved on the front bearing gland (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122714465.1U CN217044626U (en) | 2021-11-08 | 2021-11-08 | High-rigidity centre for hard turning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122714465.1U CN217044626U (en) | 2021-11-08 | 2021-11-08 | High-rigidity centre for hard turning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217044626U true CN217044626U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122714465.1U Active CN217044626U (en) | 2021-11-08 | 2021-11-08 | High-rigidity centre for hard turning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116408726A (en) * | 2023-06-09 | 2023-07-11 | 华辰精密装备（昆山）股份有限公司 | High-precision head-tail frame center structure for roll grinder and roll grinder |
-
2021
- 2021-11-08 CN CN202122714465.1U patent/CN217044626U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116408726A (en) * | 2023-06-09 | 2023-07-11 | 华辰精密装备（昆山）股份有限公司 | High-precision head-tail frame center structure for roll grinder and roll grinder |
| CN116408726B (en) * | 2023-06-09 | 2023-08-29 | 华辰精密装备（昆山）股份有限公司 | High-precision head-tail frame center structure for roll grinder and roll grinder |
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