CN109822115A - A kind of top component of simple revolution at a high speed of structure - Google Patents
A kind of top component of simple revolution at a high speed of structure Download PDFInfo
- Publication number
- CN109822115A CN109822115A CN201910180488.3A CN201910180488A CN109822115A CN 109822115 A CN109822115 A CN 109822115A CN 201910180488 A CN201910180488 A CN 201910180488A CN 109822115 A CN109822115 A CN 109822115A
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- China
- Prior art keywords
- load surface
- outer ring
- steel ball
- dead head
- bearing
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Abstract
The present invention relates to a kind of top components of the simple revolution at a high speed of structure, it includes top, composite bearing, double row tapered roller bearing, dead head, labyrinth seal lid, tail portion capping, it is top to be supported in dead head by composite bearing and double row tapered roller bearing, top one end is arranged in labyrinth seal lid, dynamic labyrinth sealing is formed with dead head to connect, tail portion capping is set to the top other end, fixes with dead head.Live centre component of the present invention is supported using composite bearing, simple and compact for structure, can be born radial and axial load simultaneously, be substantially increased top dynamic stability and machine finish.
Description
Technical field
The present invention relates to a kind of top component of the simple revolution at a high speed of structure, which are mainly applied in machine tooling, especially
Processing to axial workpiece.
Background technique
Live centre can generate biggish in machine tooling, especially for the processing of shaft member because of high speed rotation simultaneously
Radial force and axial force often cause top vibration, seriously affect the machining accuracy of lathe, turn round in the prior art to improve
Top rotational stabilization is often supported with multiple bearings, so that top modular construction is complicated, size increases, but also at
This raising.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide top group of a kind of simple revolution at a high speed of structure
Part, live centre component is supported using composite bearing, simple and compact for structure, can be born radial and axial load simultaneously, be mentioned significantly
High top dynamic stability and machine finish.
To achieve the above object, the present invention the following technical solutions are proposed realize: a kind of simple revolution at a high speed of structure is top
Components comprising top, composite bearing, double row tapered roller bearing, dead head, labyrinth seal lid, tail portion capping, it is top
It is supported in dead head by composite bearing and double row tapered roller bearing, top one end is arranged in labyrinth seal lid, with top
Sharp seat forms dynamic labyrinth sealing connection, and tail portion capping is set to the top other end, fixes with dead head.
As above-mentioned technical proposal a kind of preferred, composite bearing includes a cylinder roller bearing element and two thrusts
The shared centre circle of ball bearing element, the outer ring with the first load surface and the second load surface, inner ring, the centre circle include in annular
Between the first boss portion and second boss portion of section and its two sides, cylindrical roller interior rollaway nest is arranged in annular interlude radial outside,
Axially outside is respectively arranged with the first steel ball interior rollaway nest and the second steel ball interior rollaway nest to two boss portions；Described the first of outer ring is negative
Section is upwardly extended along tail spindle, is disposed with cylindrical roller outer rollaway nest thereon, and the second load surface of outer ring radially extends,
It is disposed with the first steel ball outer rollaway nest thereon.
As above-mentioned technical proposal a kind of preferred, first load surface, cylindrical roller, the annular interlude are constituted
The cylindrical roller element；Second load surface, the first steel ball, the first boss portion form the first thrust ball bearing member
Part, inner ring, the second steel ball, the second boss portion form the second thrust ball bearing element.
It is as above-mentioned technical proposal it is a kind of preferably, live centre component is installed in tailstock tool by when use, compound
The outer ring of bearing, inner ring, is set on top centre circle, wherein inner ring it is axially external be resisted against it is top by pointed nose side
Locating shoulder on, be equipped with the second steel ball, centre circle, the first steel ball, outer according to this along top axial direction from inner ring load surface side
Circle, outer ring are resisted against on dead head with its second load surface opposite side, and the annular interlude of centre circle is radially outward followed successively by
The first load surface of cylindrical roller and outer ring, the opposite side of the first load surface of outer ring are resisted against on dead head inner peripheral surface.
As above-mentioned technical proposal a kind of preferred, labyrinth seal lid has centre bore, top to wear wherein labyrinth seal
The radial outside end of lid is provided with labyrinth seal structure, forms dynamic sealing with dead head end.
The beneficial effects of the present invention are:
Live centre component of the invention is supported using composite bearing, can be born radial and axial load simultaneously, be substantially increased
Top dynamic stability improves the machining accuracy of lathe；Its is simple and compact for structure, has further reduced the ruler of top component
It is very little；Double row tapered roller bearing is set in top tail portion, while playing balanced action, is used in combination and improves with composite bearing
Concentricity reduces noise so that top operating is more stable.
Detailed description of the invention
Fig. 1 is live centre component structure diagram of the invention；
Fig. 2 is the centre circle concrete structure schematic diagram of composite bearing of the invention；
Attached drawing mark:
100, live centre component；101, top；111, pointed nose；112, locating shoulder；113, top bull stick；114, top tail
Portion's step；102, labyrinth seal lid；103, dead head；104, tail portion covers；105, double row tapered roller bearing；106, composite shaft
It holds；161, inner ring；162, the second steel ball；163, centre circle；164, the first steel ball；165, cylindrical roller；166, outer ring；167, first
Boss portion；168, second boss portion；169, annular interlude.
Specific embodiment
Invention is further explained with reference to the accompanying drawing, by with reference to the accompanying drawings to the detailed of the embodiment of the present invention
Thin description, above and other features and advantages of the invention will become more apparent upon.
The "upper" in alleged orientation in the present invention, "lower", " left side " and " right side " are that is, the lathes for main view
When being placed in ground when operator's face Working position up and down.In addition lathe is front side, Z close to the side of Working position
Side where axis rail is rear side.
Live centre component as shown in Figure 1, live centre component 100 include top 101, composite bearing 106, biserial circle
Taper roller bearing 105, dead head 103, labyrinth seal lid 102, tail portion capping 104, top 101 pass through the composite bearing 106
It is supported in dead head 103 with double row tapered roller bearing 105, top 101 one end is arranged in labyrinth seal lid 102, with top
Sharp seat 103 forms dynamic labyrinth sealing connection, and tail portion capping 104 is set to top 101 other end, solid with dead head 103
It is fixed.
Top 101 include pointed nose 111 and top bull stick 113, wherein radial prominent being provided with close to 111 side of pointed nose
Locating shoulder 111 out is provided with top tail portion step 114 close to top tail portion side in top bull stick 113.
The locating shoulder 111 provides axially position for composite bearing, and the top tail portion step 114 is another biserial circle
Taper roller bearing 105 provides axially position.
The composite bearing includes cylinder roller bearing element and two thrust ball bearing elements, wherein the diameter of composite bearing
It is mainly used for bearing radial load to cylinder roller bearing element, two thrust ball bearing elements of composite bearing are mainly used for holding
Carry on a shoulder pole axial load.
Composite bearing includes the centre circle 163 that a cylinder roller bearing element and two thrust ball bearing elements share, such as
Centre circle 163 shown in Fig. 2 includes annular interlude 169 and the first boss extended positioned at its two sides, towards radial outside
Portion 167 and second boss portion 168, annular interlude 169 along top 101 it is axially extending, annular interlude radial outside is set
Cylindrical roller interior rollaway nest is set, axially outside is respectively arranged with rolling in the first steel ball interior rollaway nest and the second steel ball to two boss portions
Road；
Composite bearing further includes outer ring 166, and outer ring 166 has two load surfaces at 100 degree of angles, and the first load surface is along top
Axis upwardly extends, and is disposed with cylindrical roller outer rollaway nest thereon, the cylindrical roller outer rollaway nest and the cylindrical roller interior rollaway nest it
Between arrange that multiple cylindrical rollers 165, the second load surface of outer ring 166 radially extend, be disposed with outside the first steel ball and roll thereon
Road is disposed with multiple first steel balls 164 between the first steel ball interior rollaway nest and the first steel ball outer rollaway nest；
Composite bearing further includes inner ring 161, and inner ring load surface radially extends, and is provided with the second steel ball outer rollaway nest, institute
It states and multiple second steel balls 162 is set between second steel ball outer rollaway nest and the second steel ball interior rollaway nest.
Live centre component is installed in the oil pressure tailstock of lathe when use, the outer ring 166 of composite bearing, centre circle 163,
Inner ring 161 is set on top 101, and wherein inner ring 161 is axially external, i.e., non-negative section side is resisted against top by point
On the locating shoulder 112 of 111 side of head, it is equipped with the second steel ball according to this along top axial direction from 161 load surface side of inner ring
162, centre circle 163, the first steel ball 164, outer ring 166, outer ring 166 are resisted against dead head with its second load surface opposite side
On 103, the annular interlude diameter 169 of centre circle 163 to being followed successively by the first load surface of cylindrical roller 165 and outer ring outward, outer ring the
The opposite side of one load surface is resisted against on 103 inner peripheral surface of dead head.The first load surface of outer ring, cylindrical roller 165, centre circle ring
Shape interlude 169 constitutes cylindrical roller element, main to carry radial load and part axial load；The second load surface of outer ring,
First steel ball 164, centre circle first boss portion 167 form the first thrust ball bearing element, inner ring 161, the second steel ball 162, centre circle
Second boss portion 168 formed the second thrust ball bearing element, the above two thrust ball bearings element mainly carry axial load and
Partially radially load.
Double row tapered roller bearing 105 is arranged in top tail portion, and described 105 one end of double row tapered roller bearing is against top tail
Portion's step 114, one end is against tail portion capping 104.
Labyrinth seal lid 102 has centre bore, and top 101 wear wherein, and the radial outside end of labyrinth seal lid 102 is set
It is equipped with labyrinth seal structure, dynamic sealing can be formed with 103 end of dead head.Tail portion one end for leaning on top 101 of dead head 103
It is fixed with tail portion capping 104.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (5)
1. a kind of live centre component comprising top, composite bearing, double row tapered roller bearing, dead head, labyrinth seal
Lid, tail portion capping, it is characterised in that: it is top to be supported in dead head by the composite bearing and double row tapered roller bearing,
Top one end is arranged in labyrinth seal lid, forms dynamic labyrinth sealing with dead head and connect, and tail portion capping is set to top
The other end, fixed with dead head.
2. a kind of live centre component according to claim 1, it is characterised in that: composite bearing includes a cylindrical roller
The shared centre circle of bearing element and two thrust ball bearing elements, the outer ring with the first load surface and the second load surface, inner ring,
The centre circle includes that annular interlude and the first boss portion and second boss portion of its two sides, annular interlude radial outside are set
Cylindrical roller interior rollaway nest is set, axially outside is respectively arranged with rolling in the first steel ball interior rollaway nest and the second steel ball to two boss portions
Road；First load surface of outer ring is upwardly extended along tail spindle, is disposed with cylindrical roller outer rollaway nest thereon, and the second of outer ring
Load surface radially extends, and is disposed with the first steel ball outer rollaway nest thereon.
3. a kind of live centre component according to claim 2, it is characterised in that: first load surface, cylindrical roller,
The annular interlude constitutes the cylinder roller bearing element；Second load surface, the first steel ball, the first boss portion
The first thrust ball bearing element is formed, inner ring, the second steel ball, the second boss portion form the second thrust ball bearing element.
4. a kind of live centre component according to claim 3, it is characterised in that: install live centre component when use
Into oil pressure tailstock, the outer ring of composite bearing, inner ring, is set on top centre circle, and wherein inner ring is axially external is resisted against top
On the locating shoulder of the pointed nose side of point, be equipped with according to this from inner ring load surface side along top axial direction the second steel ball, in
Circle, the first steel ball, outer ring, outer ring are resisted against on dead head with its second load surface opposite side, the annular interlude of centre circle
It is radially outward followed successively by the first load surface of cylindrical roller and outer ring, the opposite side of the first load surface of outer ring is resisted against top
On seat inner peripheral surface.
5. a kind of live centre component according to claim 1, it is characterised in that: labyrinth seal lid has centre bore,
Top to wear wherein, the radial outside end of labyrinth seal lid is provided with labyrinth seal structure, forms dynamic with dead head end
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180488.3A CN109822115B (en) | 2019-03-11 | 2019-03-11 | High-speed rotating center assembly with simple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180488.3A CN109822115B (en) | 2019-03-11 | 2019-03-11 | High-speed rotating center assembly with simple structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109822115A true CN109822115A (en) | 2019-05-31 |
| CN109822115B CN109822115B (en) | 2021-05-28 |
Family
ID=66868828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910180488.3A Active CN109822115B (en) | 2019-03-11 | 2019-03-11 | High-speed rotating center assembly with simple structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109822115B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE575234C (en) * | 1933-04-26 | Otto Griessbach | Revolving center point with roller bearings | |
| DE635875C (en) * | 1933-05-23 | 1936-09-28 | Rudolf Prozesky Fa | Revolving lathe center |
| FR2443303A1 (en) * | 1978-12-07 | 1980-07-04 | Chat Alain | Lathe headstock centre with cone point - has nominally offset axis of revolution whereby rotation obtains small adjustment in radial plane |
| CN107975535A (en) * | 2017-12-28 | 2018-05-01 | 洛阳普瑞森精密轴承有限公司 | A kind of combination bearing of cylindrical roller and thrust ball |
| CN208457026U (en) * | 2018-04-08 | 2019-02-01 | 进发轴承有限公司 | A kind of combined type deep groove ball bearing |
-
2019
- 2019-03-11 CN CN201910180488.3A patent/CN109822115B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE575234C (en) * | 1933-04-26 | Otto Griessbach | Revolving center point with roller bearings | |
| DE635875C (en) * | 1933-05-23 | 1936-09-28 | Rudolf Prozesky Fa | Revolving lathe center |
| FR2443303A1 (en) * | 1978-12-07 | 1980-07-04 | Chat Alain | Lathe headstock centre with cone point - has nominally offset axis of revolution whereby rotation obtains small adjustment in radial plane |
| CN107975535A (en) * | 2017-12-28 | 2018-05-01 | 洛阳普瑞森精密轴承有限公司 | A kind of combination bearing of cylindrical roller and thrust ball |
| CN208457026U (en) * | 2018-04-08 | 2019-02-01 | 进发轴承有限公司 | A kind of combined type deep groove ball bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109822115B (en) | 2021-05-28 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210429 Address after: 444200 Chengnan Industrial Zone, Mingfeng Town, Yuan'an County, Yichang City, Hubei Province Applicant after: Hubei ShanTie Intelligent Equipment Co.,Ltd. Address before: 317600 Shang Ao village, Yu Cheng street, Yuhuan county, City of Taizhous Applicant before: ZHEJIANG DARUN MACHINE TOOLS Co.,Ltd. |
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