CN203664693U - Lathe spindle - Google Patents
Lathe spindle Download PDFInfo
- Publication number
- CN203664693U CN203664693U CN201420036893.0U CN201420036893U CN203664693U CN 203664693 U CN203664693 U CN 203664693U CN 201420036893 U CN201420036893 U CN 201420036893U CN 203664693 U CN203664693 U CN 203664693U
- Authority
- CN
- China
- Prior art keywords
- labyrinth seal
- main shaft
- seal
- ring
- lathe spindle
- Prior art date
- 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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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a lathe spindle. The lathe spindle is characterized in that a second labyrinth seal ring is made of a hard material and is in clearance fit with the spindle, an inner wall of the second labyrinth seal ring is provided with a conical surface inclined towards an outer wall, the spindle is sleeved with a ring-shaped seal ring which is made of an elastic material and has the section in a wedge shape, an outer wall of the ring-shaped seal ring is a wedge-shaped surface matched with the shape of the conical surface, one end of the ring-shaped seal ring abuts against a bearing inner ring, the other end of the ring-shaped seal ring adheres to the second labyrinth seal ring through the matching between the wedge-shaped surface and the conical surface, the other end of the second labyrinth seal ring opposite to the ring-shaped seal ring is provided with a pressing cover, and the pressing cover is in threaded connection with the spindle. The lathe spindle has the advantages of being good in sealing performance and convenient to dismantle.
Description
Technical field
The utility model relates to bearing, and more particularly, it relates to a kind of lathe spindle.
Background technology
Lathe spindle refers to the axle that drives workpiece or cutter rotation on lathe.Conventionally form spindle unit by main shaft, bearing and driving member (gear or belt wheel) etc.In machine, be mainly used to support driving parts as gear, belt wheel, transmit motion and moment of torsion, as machine tool chief axis; What have is used for clamping workpiece, as axle.Except the main motion such as planer, broaching machine is straight-line lathe, most of lathes have spindle unit.
On the rear end cap of the main spindle box body of existing lathe spindle, generally can use labyrinth seal end cap and main shaft seal, there are following several mated condition in the labyrinth seal and the main shaft that are enclosed within main shaft part:
1. interference fit, the disassemble and assemble work of labyrinth seal end cap is very inconvenient, need to assemble by external impacts, and labour intensity is large, inefficiency, and in assembling process, also very easily damage the outer surface of main shaft;
2. interference fits, sealing property is tight not, and after dismounting several times, the sealing effectiveness of this junction can reduce greatly, easily occurs leaking oil condition;
3. matched in clearance cannot guarantee sealing property at all.
Therefore the hermetically-sealed construction of main spindle box rear end and main shaft haves much room for improvement.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of have good seal performance and lathe spindle for convenience detach.
For achieving the above object, the utility model provides following technical scheme: a kind of lathe spindle, comprise casing, main shaft, described main shaft is located in casing, described main shaft periphery is arranged with some bearings, described main shaft periphery is provided with to support the support level of described bearing, labyrinth seal end cap for seal case rear end and main shaft is installed on described box back, described labyrinth seal end cap is divided into the first labyrinth seal being fixed on box back and is socketed in the second labyrinth seal on main shaft, the first labyrinth seal and the second labyrinth seal form labyrinth seal, the second described labyrinth seal is made up of hard material and is coordinated with gap of main reinforcement, the second described labyrinth seal inwall is provided with the taper seat tilting to outer wall, on described main shaft, be arranged with by elastomeric material and make and cross section is the O-ring seal of wedge shape, the outer wall of described O-ring seal is the lozenges suitable with described taper seat shape, described O-ring seal one end is resisted against on bearing inner race, the other end fitted tightly by lozenges and coordinating with the second labyrinth seal of taper seat, the other end of the described relative O-ring seal of the second labyrinth seal is provided with friction top, described friction top is connected with spindle thread.
The utility model is further set to: described O-ring seal inwall is provided with groove.
The utility model is further set to: described groove is annular groove, and described annular groove and O-ring seal coaxially arrange.
The utility model is further set to: described main shaft is provided with external screw thread, and described friction top is provided with the internal thread suitable with external screw thread.
The utility model is further set to: the first described labyrinth seal is fixedly connected on the end face of box back by screw.
The utility model is further set to: described casing is cylindric.
By adopting technique scheme, sheathedly on the main shaft of this lathe spindle made and cross section is the O-ring seal of wedge shape by elastomeric material, the outer wall of O-ring seal is the lozenges suitable with the taper seat shape of the second labyrinth seal, only the large end of O-ring seal need be resisted against on the bearing in box back, again the first labyrinth seal is fixed on casing, then being inserted in the second labyrinth seal is fitted on lozenges its taper seat, finally screw with friction top, make the second labyrinth seal being pressed in O-ring seal tightly, make it form soft seal and hard sealing simultaneously, improve greatly sealing property, and second labyrinth seal coordinate with gap of main reinforcement, can easily the second labyrinth seal be nested on main shaft, the sealing property of having gone back effective guarantee when easy disassembly between the second labyrinth seal and main shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model lathe spindle embodiment;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
Fig. 3 is the partial enlarged drawing of B in Fig. 2.
Reference numeral: 1, casing; 2, main shaft; 21, support level; 3, bearing; 4, labyrinth seal end cap; 41, the first labyrinth seal; 42, the second labyrinth seal; 421, taper seat; 5, O-ring seal; 51, lozenges; 52, groove; 6, friction top.
The specific embodiment
Referring to figs. 1 through Fig. 3, the utility model lathe spindle embodiment is described further.
A kind of lathe spindle, comprise and be casing 1 cylindraceous, main shaft 2, described main shaft 2 is located in casing 1, described main shaft 2 peripheries are arranged with some bearings 3, described main shaft 2 peripheries are provided with to support the support level 21 of described bearing 3, on described casing 1 rear end, the labyrinth seal end cap 4 for seal case 1 rear end and main shaft 2 is installed, described labyrinth seal end cap 4 is divided into and is fixed on the first labyrinth seal 41 on casing 1 rear end and is socketed in the second labyrinth seal 42 on main shaft 2, the first labyrinth seal 41 is fixedly connected on by screw on the end face of casing 1 rear end, the first labyrinth seal 41 and the second labyrinth seal 42 form labyrinth seal and (are noted that: the first labyrinth seal 41 and the second labyrinth seal 42 form labyrinth seal and have in the axial direction certain adjustable clearance herein, the first labyrinth seal 41 can relative the second labyrinth seal 42 moves axially), the second described labyrinth seal 42 made by hard material and with main shaft 2 matched in clearance, the second described labyrinth seal 42 inwalls are provided with the taper seat 421 tilting to outer wall, on described main shaft 2, be arranged with by the O-ring seal 5(O-ring seal 5 that elastomeric material is made and cross section is wedge shape and can be made by elastomeric material), the outer wall of described O-ring seal 5 is the lozenges 51 suitable with described taper seat 421 shapes, described O-ring seal 5 one end are resisted against on bearing 3 inner rings, the other end fitted tightly by lozenges 51 and coordinating with the second labyrinth seal 42 of taper seat 421, the other end of the second described labyrinth seal 42 relative O-ring seals 5 is provided with friction top 6, described friction top 6 is threaded with main shaft 2.Sheathedly on the main shaft 2 of this lathe spindle made and cross section is the O-ring seal 5 of wedge shape by elastomeric material, the outer wall of O-ring seal 5 is the lozenges 51 suitable with taper seat 421 shapes of the second labyrinth seal 42, the large end of O-ring seal 5 is resisted against on bearing 3 inner rings in casing 1 rear end, again the first labyrinth seal 41 is fixed on casing 1, then being inserted in the second labyrinth seal 42 is fitted on lozenges 51 its taper seat 421, wherein the axial length of lozenges 51 is slightly larger than the axial length (making like this second labyrinth seal 42 have certain compression stroke) of taper seat 421, finally screw with friction top 6, make the second labyrinth seal 42 being pressed in O-ring seal 5 tightly, O-ring seal 5 is simultaneously fitted on main shaft 2 closely, make it form soft seal and hard sealing simultaneously, improve greatly sealing property, and second labyrinth seal 42 and main shaft 2 matched in clearance, can easily the second labyrinth seal 42 be nested on main shaft 2, make assembly work variation easily, laborsaving, improve operating efficiency.
Described O-ring seal 5 inwalls are provided with groove 52.Groove 52 can make O-ring seal 5 and main shaft 2 form cavity, and O-ring seal 5 can be fitted on main shaft 2 more closely, has effectively improved the sealing property of O-ring seal 5.
Described groove 52 is annular groove, described annular groove and O-ring seal 5 coaxially arrange, make the whole inwall of O-ring seal 5 and main shaft 2 form annular cavity, the whole circle of O-ring seal 5 can both be fitted on main shaft 2 closely, the more effective sealing property that improves O-ring seal 5.
Described main shaft 2 is provided with external screw thread, and described friction top 6 is provided with the internal thread suitable with external screw thread.By the cooperation of internal and external screw thread, friction top 6 can be spun on main shaft 2, and the second labyrinth seal 42 is played to good pressuring action.
The first described labyrinth seal 41 is fixedly connected on by screw on the end face of casing 1 rear end, the dismounting of screw convenient fixing.
Claims (6)
1. a lathe spindle, comprise casing, main shaft, described main shaft is located in casing, described main shaft periphery is arranged with some bearings, described main shaft periphery is provided with to support the support level of described bearing, labyrinth seal end cap for seal case rear end and main shaft is installed on described box back, described labyrinth seal end cap is divided into the first labyrinth seal being fixed on box back and is socketed in the second labyrinth seal on main shaft, the first labyrinth seal and the second labyrinth seal form labyrinth seal, it is characterized in that: the second described labyrinth seal is made up of hard material and is coordinated with gap of main reinforcement, the second described labyrinth seal inwall is provided with the taper seat tilting to outer wall, on described main shaft, be arranged with by elastomeric material and make and cross section is the O-ring seal of wedge shape, the outer wall of described O-ring seal is the lozenges suitable with described taper seat shape, described O-ring seal one end is resisted against on bearing inner race, the other end fitted tightly by lozenges and coordinating with the second labyrinth seal of taper seat, the other end of the described relative O-ring seal of the second labyrinth seal is provided with friction top, described friction top is connected with spindle thread.
2. lathe spindle according to claim 1, is characterized in that: described O-ring seal inwall is provided with groove.
3. lathe spindle according to claim 2, is characterized in that: described groove is annular groove, and described annular groove and O-ring seal coaxially arrange.
4. according to the lathe spindle described in claim 1 or 3, it is characterized in that: described main shaft is provided with external screw thread, described friction top is provided with the internal thread suitable with external screw thread.
5. lathe spindle according to claim 4, is characterized in that: the first described labyrinth seal is fixedly connected on the end face of box back by screw.
6. lathe spindle according to claim 1 or 5, is characterized in that: described casing is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036893.0U CN203664693U (en) | 2014-01-21 | 2014-01-21 | Lathe spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036893.0U CN203664693U (en) | 2014-01-21 | 2014-01-21 | Lathe spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203664693U true CN203664693U (en) | 2014-06-25 |
Family
ID=50961027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420036893.0U Expired - Fee Related CN203664693U (en) | 2014-01-21 | 2014-01-21 | Lathe spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203664693U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672725A (en) * | 2018-08-03 | 2018-10-19 | 隆昌精机有限公司 | Milling machine spindle |
| CN111622945A (en) * | 2020-06-02 | 2020-09-04 | 安徽优源液压科技有限公司 | Withstand voltage type hydraulic pump |
| CN112524152A (en) * | 2019-09-17 | 2021-03-19 | 福建金风科技有限公司 | Bearing clearance adjusting device and method and wind generating set |
-
2014
- 2014-01-21 CN CN201420036893.0U patent/CN203664693U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672725A (en) * | 2018-08-03 | 2018-10-19 | 隆昌精机有限公司 | Milling machine spindle |
| CN112524152A (en) * | 2019-09-17 | 2021-03-19 | 福建金风科技有限公司 | Bearing clearance adjusting device and method and wind generating set |
| CN111622945A (en) * | 2020-06-02 | 2020-09-04 | 安徽优源液压科技有限公司 | Withstand voltage type hydraulic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20160121 |
|
| EXPY | Termination of patent right or utility model |