CN210937153U - Vertical numerical control lathe spindle structure - Google Patents
Vertical numerical control lathe spindle structure Download PDFInfo
- Publication number
- CN210937153U CN210937153U CN201921599607.0U CN201921599607U CN210937153U CN 210937153 U CN210937153 U CN 210937153U CN 201921599607 U CN201921599607 U CN 201921599607U CN 210937153 U CN210937153 U CN 210937153U
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- China
- Prior art keywords
- main shaft
- roller bearing
- gland
- axis body
- shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 210000004907 gland Anatomy 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a vertical numerical control lathe main shaft structure belongs to vertical numerical control lathe main shaft field, including the axis body, install at the main shaft switching dish at axis body top, install at the three-jaw chuck at main shaft switching dish top and suit at the epaxial main shaft seat of axis body, on the axis body, be located a pot head between main shaft seat and the main shaft switching dish and be equipped with the gland. When the nut locks the external thread upwards, the nut can upwards support the lower end face of the lower gland, the upper surface of the uppermost step of the lower gland supports the lower end of the inner ring of the cylindrical roller bearing, the upper end of the inner ring of the cylindrical roller bearing supports the lower end face of the shaft sleeve, the upper port of the shaft sleeve supports the lower end of the inner ring of the crossed roller bearing, and the lower end of the inner part of the first step supports the lower end of the outer ring of the crossed roller bearing.
Description
Technical Field
The utility model relates to a vertical numerical control lathe main shaft structure.
Background
The vertical lathe is different from a common lathe in that a main shaft of the vertical lathe is vertical, namely the common lathe is erected vertically, and a workbench of the vertical lathe is in a horizontal position, so that the vertical lathe is suitable for machining heavy parts with large diameters and short lengths.
The spindle of the existing vertical lathe is mainly composed of a center shaft and a spindle seat, wherein a plurality of steel ball bearings are arranged in the spindle seat, the center shaft penetrates through inner rings of the steel ball bearings, the center shaft can rotate stably by the rotation of the steel ball bearings, the top end of the center shaft and a groove on the middle side of the lower end face of a spindle adapter plate are in an inserted state and are mutually fixed through screws, and a three-jaw chuck is arranged at the top end of the spindle adapter plate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vertical numerical control lathe main shaft structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, an embodiment of the present invention provides a spindle structure of a vertical numerically controlled lathe, including a central spindle body, a spindle adapter plate mounted on the top of the central spindle body, a three-jaw chuck mounted on the top of the spindle adapter plate, and a spindle seat mounted on the central spindle body, wherein an end cover on the central spindle body and located between the spindle seat and the spindle adapter plate is provided with an upper gland, the upper side of the inner wall of the spindle seat is provided with a first step, a crossed roller bearing is mounted in the first step, one side of the outer wall of the central spindle body is provided with a second step, one side of the outer ring of the crossed roller bearing is inserted into the second step, a spindle sleeve is mounted on the central spindle body and located at the outer side of the crossed roller bearing, a cylindrical roller bearing is mounted on the central spindle body and located at the lower side of the spindle sleeve, the middle shaft is characterized in that a lower gland is sleeved on the middle shaft body and positioned at the lower side of the main shaft seat, external threads are arranged on the outer wall of the middle shaft body and positioned at the lower side of the lower gland, and a nut is locked on the external threads.
Further, the upper gland is of a single-step circular ring structure.
Furthermore, the shaft sleeve is of a round sleeve structure.
Further, the lower gland is of a double-step ring structure.
To sum up, the utility model has the advantages of it is following: when the nut locks the external thread upwards, the nut can upwards support the lower end face of the lower gland, the upper surface of the uppermost step of the lower gland supports the lower end of the inner ring of the cylindrical roller bearing, the upper end of the inner ring of the cylindrical roller bearing supports the lower end face of the shaft sleeve, the upper port of the shaft sleeve supports the lower end of the inner ring of the crossed roller bearing, and the lower end of the inner part of the first step supports the lower end of the outer ring of the crossed roller bearing.
Drawings
Fig. 1 is a schematic view partially cut away from a front view in one embodiment of the present invention;
fig. 2 is a schematic axial view of a shaft sleeve according to an embodiment of the present invention;
fig. 3 is a schematic axial view of an upper gland according to an embodiment of the present invention;
fig. 4 is a schematic view of a lower press cover shaft according to an embodiment of the present invention.
The spindle comprises a central shaft body 1, a main shaft adapter plate 2, a three-jaw chuck 3, a main shaft seat 4, an upper gland 5, a first step 6, a cross roller bearing 7, a second step 8, a shaft sleeve 9, a cylindrical roller bearing 10, a lower gland 11, an external thread 12 and a nut 13.
Detailed Description
Referring to fig. 1 and 3, a spindle structure of a vertical numerically controlled lathe includes a center shaft body 1, a spindle adapter 2 mounted on the top of the center shaft body 1, a three-jaw chuck 3 mounted on the top of the spindle adapter 2, and a spindle seat 4 sleeved on the center shaft body 1, wherein an upper gland 5 is sleeved on one end of the center shaft body 1 between the spindle seat 4 and the spindle adapter 2, an inner wall of the upper gland 5 is in sliding contact with an upper outer wall of the center shaft body 1, a lower surface step of the upper gland 5 is slidably inserted into the spindle seat 4, and the upper gland 5 is a single-step circular ring structure.
Referring to fig. 1 and 2, a first step 6 is arranged on the upper side of the inner wall of the spindle seat 4, a cross roller bearing 7 is arranged in the first step 6, the inner wall of the inner ring of the cross roller bearing 7 is in sliding fit with the inner wall of the first step 6, the model of the cross roller bearing 7 is LM12, the inner lower end of the first step 6 is in press contact with the lower end of the outer ring of the cross roller bearing 7, the inner upper end of the second step 8 is in press contact with the upper end of the inner ring of the cross roller bearing 7, the step part on the lower surface of the upper gland 5 is in press contact with the upper end surface of the outer ring of the cross roller bearing 7, a second step 8 is arranged on one side of the outer wall of the middle shaft body 1, the second step 8 is inserted into one side of the outer ring of the cross roller bearing 7, a shaft sleeve 9 is sleeved on the outer side of the middle shaft body 1 and located outside the cross roller bearing 7, the inner wall, the axle sleeve 9 is the round sleeve structure, on the axis body 1, the cylindrical roller bearing 10 has been installed to the downside that lies in axle sleeve 9, the model of cylindrical roller bearing 10 is NNU, the outer wall of axis body 1 is followed to cylindrical roller bearing 10's inner circle inner wall sliding contact, cylindrical roller bearing 10's inner circle upper end supports the lower terminal surface of pressing contact axle sleeve 9, and cylindrical roller bearing 10's outer lane outer wall sliding contact spindle drum 4's inner wall, and axle sleeve 9 and cylindrical roller bearing 10 are all installed in spindle drum 4.
Referring to fig. 1 and 4, a lower gland 11 is sleeved on the middle shaft body 1 and at the lower side of the spindle seat 4, the lower gland 11 is of a double-step circular ring structure, the inner wall of the central hole of the lower gland 11 is in sliding contact with the outer wall of the middle shaft body 1, the upper surface of the uppermost step of the lower gland 11 is in abutting contact with the lower end of the inner ring of the cylindrical roller bearing 10, the outer edge of the upper surface of the lower gland 11 is in abutting contact with the lower end surface of the spindle seat 4, the outer wall of the middle shaft body 1 and at the lower side of the lower gland 11 are provided with external threads 12, nuts 13 are locked on the external threads 12, and when the external threads 12 are locked upwards by the nuts 13, the nuts 13 can abut against the.
When the external thread 12 is locked upwards by the nut 13, the nut 13 can upwards abut against the lower end face of the lower pressing cover 11, the upper surface of the uppermost step of the lower pressing cover 11 abuts against the lower end of the inner ring of the cylindrical roller bearing 10, the upper end of the inner ring of the cylindrical roller bearing 10 abuts against the lower end face of the shaft sleeve 9, the upper port of the shaft sleeve 9 abuts against the lower end of the inner ring of the crossed roller bearing 7, and the lower end of the inner part of the first step 6 abuts against the lower end of the outer ring of the crossed roller bearing 7, so that when the crossed roller bearing 7 and the cylindrical roller bearing 10 have play on the middle shaft body 1, the crossed roller bearing 7 and the cylindrical roller bearing 10 can be axially positioned and finely adjusted on the middle shaft body 1 by upwards locking the nut 13, and the influence.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (4)
1. The utility model provides a vertical numerical control lathe main shaft structure, includes axis body (1), installs main shaft switching dish (2) at axis body (1) top, installs three-jaw chuck (3) and main shaft seat (4) of suit on axis body (1) at main shaft switching dish (2) top, its characterized in that: an upper gland (5) is sleeved on one end of the middle shaft body (1) between the main shaft seat (4) and the main shaft adapter plate (2), a first step (6) is arranged on the upper side of the inner wall of the main shaft seat (4), a crossed roller bearing (7) is arranged in the first step (6), a second step (8) is arranged on one side of the outer wall of the middle shaft body (1), a second step (8) is inserted into one side of the outer ring of the crossed roller bearing (7), a shaft sleeve (9) is sleeved on the middle shaft body (1) at the outer side position of the crossed roller bearing (7), a cylindrical roller bearing (10) is arranged on the lower side of the shaft sleeve (9) on the middle shaft body (1), the shaft sleeve (9) and the cylindrical roller bearing (10) are both arranged in the main shaft seat (4), and a lower gland (11) is sleeved on the middle shaft body (1) at the lower side position of the main shaft seat (4), the middle shaft is characterized in that an external thread (12) is arranged on the outer wall of the middle shaft body (1) and positioned on the lower side of the lower gland (11), and a nut (13) is locked on the external thread (12).
2. The vertical numerically controlled lathe spindle structure as defined in claim 1, wherein: the upper gland (5) is of a single-step circular ring structure.
3. The vertical numerically controlled lathe spindle structure as defined in claim 1, wherein: the shaft sleeve (9) is of a round sleeve structure.
4. The vertical numerically controlled lathe spindle structure as defined in claim 1, wherein: the lower gland (11) is of a double-step ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599607.0U CN210937153U (en) | 2019-09-25 | 2019-09-25 | Vertical numerical control lathe spindle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599607.0U CN210937153U (en) | 2019-09-25 | 2019-09-25 | Vertical numerical control lathe spindle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210937153U true CN210937153U (en) | 2020-07-07 |
Family
ID=71384622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921599607.0U Expired - Fee Related CN210937153U (en) | 2019-09-25 | 2019-09-25 | Vertical numerical control lathe spindle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210937153U (en) |
-
2019
- 2019-09-25 CN CN201921599607.0U patent/CN210937153U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |