CN109404416A - A kind of hydrodynamic pressure bearing and its manufacturing method - Google Patents
A kind of hydrodynamic pressure bearing and its manufacturing method Download PDFInfo
- Publication number
- CN109404416A CN109404416A CN201811532312.1A CN201811532312A CN109404416A CN 109404416 A CN109404416 A CN 109404416A CN 201811532312 A CN201811532312 A CN 201811532312A CN 109404416 A CN109404416 A CN 109404416A
- Authority
- CN
- China
- Prior art keywords
- dynamic pressure
- pressure groove
- hydrodynamic
- bearing
- runner
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/0633—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being retained in a gap
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/20—Shaping by sintering pulverised material, e.g. powder metallurgy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to a kind of hydrodynamic pressure bearing and its manufacturing methods, the hydrodynamic pressure bearing includes hydrodynamic bearing ontology, multiple groups dynamic pressure groove is produced in the inner wall surface of hydrodynamic bearing ontology, every group of dynamic pressure groove includes first runner and second flow channel, the first runner and second flow channel are symmetrical, and cross and to form V-shape.The present invention proposes a kind of hydrodynamic pressure bearing organization plan and its manufacturing method, the limit speed and rotating accuracy that can be improved hydrodynamic pressure bearing, are prolonged the service life, are processed using molding cutter, suitable for different type blank material and it can be reduced tool wear, creative and application value.
Description
Technical field
It is especially a kind of that the miniature of dynamic pressure groove is processed by molding cutter the present invention relates to hydrodynamic pressure bearing technical field
Hydrodynamic bearing and its manufacturing method.
Background technique
As metallurgy, electric power, petrochemical industry, coal, mine, building materials, papermaking, municipal administration, water conservancy, shipbuilding, harbour handling etc. are each
Field is higher and higher to super high speed motor demand, and ball bearing, common oiliness bearing have been unable to satisfy speed and required precision, and move
Last item is held using dynamic pressure principle, and the rotary motion of oil film spring bearing is formed between axis and bearing shell, has low noise, rotating accuracy
Height, long service life, it is small in size the features such as, more suitable for ultrahigh speed field use.
Miniature hydrodynamic bearing mostly uses wide groove at this stage, and pressure focuses mostly at groove convergent point, leads to bearing pressure
Power is unevenly distributed, and abrasion is uneven, while can also reduce bearing rotating accuracy.The present invention is intended to provide a kind of miniature hydrodynamic bearing
And its manufacturing method, hydrodynamic bearing rev limit and rotating accuracy are promoted, is prolonged the service life.
Summary of the invention
It is an object of the invention in place of making up the deficiencies in the prior art, provide a kind of hydrodynamic pressure bearing and its manufacturer
Method.The miniature hydrodynamic bearing is able to ascend the rev limit and rotating accuracy of hydrodynamic bearing, keeps bearing wear uniform, extends
Service life.The processing method of the miniature hydrodynamic bearing can complete bearing machining in batches, and reduce molding cutter abrasion.
The purpose of the present invention is what is realized by following technological means:
A kind of hydrodynamic pressure bearing, including hydrodynamic bearing ontology, it is characterised in that: in the inner wall surface of hydrodynamic bearing ontology
Multiple groups dynamic pressure groove is produced, every group of dynamic pressure groove includes first runner and second flow channel, which symmetrically divides with second flow channel
Cloth, and cross and to form V-shape.
Moreover, the width of the runner intersection of the first runner and second flow channel is less than the width of runner outer.
Moreover, the multiple groups dynamic pressure groove is divided into the first dynamic pressure groove region and the second dynamic pressure groove region, first dynamic pressure groove
Region is identical as the second dynamic pressure groove regional structure, and the second dynamic pressure groove region is located at the first dynamic pressure groove overlying regions, and the first dynamic pressure
Isolated area is set on the inner wall of hydrodynamic bearing ontology between slot region and the second dynamic pressure groove region, the diameter at the isolated area is big
Diameter in the first dynamic pressure groove region and the second dynamic pressure groove region, the diameter phase in the first dynamic pressure groove region and the second dynamic pressure groove region
Together.
A kind of manufacturing method of hydrodynamic pressure bearing, it is characterised in that: the following steps are included:
The first step processes hydrodynamic bearing blank using powder metallurgical technique or shape extrusion method；
Second step processes isolated area and everywhere chamfering on blank；
Hydrodynamic bearing blank is fixed on special purpose machine tool workbench by third step using special tooling, and molding cutter is fixed on
On machine tool chief axis, adjustment workbench is directed at hydrodynamic bearing blank axis with molding cutter axis；
4th step main shaft drive molding cutter moves reciprocatingly and rotary motion, by adjusting reciprocating motion and rotary motion
Parameter processes required dynamic pressure groove in hydrodynamic bearing blank.
Moreover, the molding cutter is made of knife bar and blade, the lower part of knife bar is along the circumferential direction uniformly installed multiple
Blade；Knife bar diameter D1 is less than hydrodynamic bearing the first dynamic pressure groove region and the second dynamic pressure groove regional diameter, the maximum of blade composition
Diameter D2 is equal to the sum of the first dynamic pressure groove regional diameter and twice of dynamic pressure groove depth.
Moreover, the single blade is made of 4 cutting faces, i.e. the first cutting face, the second cutting face, third cutting
Face, the 4th cutting face.
Moreover, the quantity of the dynamic pressure groove can be odd number, it can also be even numbers, achievable institute is recycled by a feed
There is dynamic pressure groove processing.
Moreover, the single group dynamic pressure groove is completed the process by single molding cutter blade.
The advantages and positive effects of the present invention are:
The present invention proposes a kind of hydrodynamic pressure bearing organization plan and its manufacturing method, can be improved hydrodynamic pressure bearing
Limit speed and rotating accuracy, are processed using molding cutter, promote processing efficiency, are suitable for different type blank material, molding
The multiple cutting faces of cutter participate in cutting, reduce tool wear, promote cutter life, creative and application value.
Detailed description of the invention
Fig. 1 is hydrodynamic pressure bearing structure sectional view；
Fig. 2 is hydrodynamic bearing dynamic pressure groove machining sketch chart；
Fig. 3 is molding cutter schematic diagram；A is main view, and b is top view；
Fig. 4 is the single blade enlarged drawing of molding cutter；
Fig. 5 is single group dynamic pressure groove and locus of tool edge line.
Specific embodiment
With reference to the accompanying drawing in detail narration the embodiment of the present invention, it should be noted that the present embodiment be it is narrative, no
It is restrictive, this does not limit the scope of protection of the present invention.
It is dynamic to produce multiple groups in the inner wall surface of hydrodynamic bearing ontology for a kind of hydrodynamic pressure bearing, including hydrodynamic bearing ontology 3
Indent, every group of dynamic pressure groove include first runner 4 and second flow channel 7, and the first runner and second flow channel are symmetrical, and cross
Form V-shape.The width of the runner intersection 5 of first runner and second flow channel be less than runner outer 6 width, when fluid due to
Relative motion between axis and bearing when flowing to intersection 5 by outer 6, axially generates since dynamic pressure principle is generated along hydrodynamic bearing
Even pressure support plays bearing rotary.
Above-mentioned multiple groups dynamic pressure groove is divided into the first dynamic pressure groove region 1 and the second dynamic pressure groove region 8, the first dynamic pressure groove region
Identical as the second dynamic pressure groove regional structure, the second dynamic pressure groove region is located at the first dynamic pressure groove overlying regions, and the first dynamic pressure groove area
Isolated area 2 is set on the inner wall of the hydrodynamic bearing ontology between domain and the second dynamic pressure groove region, and the diameter at the isolated area is greater than
The diameter in the first dynamic pressure groove region and the second dynamic pressure groove region, the diameter phase in the first dynamic pressure groove region and the second dynamic pressure groove region
Together.
Fluid dynamic pressure shaft bearing structure in the present embodiment can also give up the second dynamic pressure groove as shown in Figure 1, for certain situations
Region and isolated area, production only include the hydrodynamic bearing in the first dynamic pressure groove region.
A kind of manufacturing method of hydrodynamic pressure bearing, comprising the following steps:
The first step processes hydrodynamic bearing blank using powder metallurgical technique or shape extrusion method；Second step is on blank
Process isolated area 2 and everywhere chamfering；Hydrodynamic bearing blank is fixed on special purpose machine tool workbench using special tooling by third step
On, molding cutter is fixed on machine tool chief axis, and adjustment workbench is directed at hydrodynamic bearing blank axis with molding cutter axis；
4th step main shaft drive molding cutter moves reciprocatingly and rotary motion, by adjusting moving back and forth with rotary motion parameter dynamic
Required dynamic pressure groove is processed in pressure bearing blank.
As shown in Fig. 2, when hydrodynamic bearing processes dynamic pressure groove, first that hydrodynamic bearing blank 10 is fixed, hydrodynamic bearing blank 10
Can be formed by powder metallurgy or shape extrusion, molding cutter 9 can move reciprocatingly 11 and rotary motion 12, two movements drive at
Type cutter processes required dynamic pressure groove in hydrodynamic bearing blank.
The multiple groups dynamic pressure groove of this hydrodynamic pressure bearing is distributed in bearing inner wall, and the quantity of dynamic pressure groove can be odd number, can also
For even numbers, achievable all dynamic pressure grooves are recycled by a feed and are processed.
As shown in figure 3, above-mentioned molding cutter is made of knife bar 13 and blade 14, the lower part of knife bar is along the circumferential direction uniformly distributed
Multiple blades are installed.Knife bar diameter D1 is less than hydrodynamic bearing the first dynamic pressure groove region and the second dynamic pressure groove regional diameter, blade group
At maximum dimension D 2 be equal to the sum of the first dynamic pressure groove regional diameter and twice of dynamic pressure groove depth.
As shown in figure 4, single blade is made of 4 cutting faces, i.e. the first cutting face 11, the second cutting face 12, third is cut
Bevel 13, the 4th cutting face 14.Multiple cutting faces are used in cutting process, can reduce tool wear.
As shown in figure 5, single group dynamic pressure groove is completed the process by single blade, dotted line is locus of tool edge in figure, and 15 rise for blade
Point, 16 be blade terminal, and motion path 15,17,20,21,19,18,16 is cut when wherein blade is moved along track 17 by first
Bevel 11 works, and is worked by the second cutting face 12 at track 20, is worked at track 19 by third cutting face 13, by the at track 18
The work of four cutting faces 14.
Claims (8)
1. a kind of hydrodynamic pressure bearing, including hydrodynamic bearing ontology, it is characterised in that: in the inner wall surface system of hydrodynamic bearing ontology
Multiple groups dynamic pressure groove out, every group of dynamic pressure groove include first runner and second flow channel, and the first runner and second flow channel are symmetrical,
And it crosses and to form V-shape.
2. a kind of hydrodynamic pressure bearing according to claim 1, it is characterised in that: the first runner and second flow channel
Runner intersection width be less than runner outer width.
3. a kind of hydrodynamic pressure bearing according to claim 1, it is characterised in that: the multiple groups dynamic pressure groove is divided into first
Dynamic pressure groove region and the second dynamic pressure groove region, the first dynamic pressure groove region is identical as the second dynamic pressure groove regional structure, the second dynamic pressure
Slot region is located at the first dynamic pressure groove overlying regions, and the hydrodynamic bearing sheet between the first dynamic pressure groove region and the second dynamic pressure groove region
Isolated area is set on the inner wall of body, the diameter at the isolated area is greater than the straight of the first dynamic pressure groove region and the second dynamic pressure groove region
Diameter, the first dynamic pressure groove region are identical as the diameter in the second dynamic pressure groove region.
4. a kind of manufacturing method of hydrodynamic pressure bearing as defined in claim 1, it is characterised in that: including following step
It is rapid:
The first step processes hydrodynamic bearing blank using powder metallurgical technique or shape extrusion method；
Second step processes isolated area and everywhere chamfering on blank；
Hydrodynamic bearing blank is fixed on special purpose machine tool workbench by third step using special tooling, and molding cutter is fixed on lathe
On main shaft, adjustment workbench is directed at hydrodynamic bearing blank axis with molding cutter axis；
4th step main shaft drive molding cutter moves reciprocatingly and rotary motion, by adjusting moving back and forth and rotary motion parameter
Required dynamic pressure groove is processed in hydrodynamic bearing blank.
5. a kind of manufacturing method of hydrodynamic pressure bearing according to claim 4, it is characterised in that: the molding cutter
It is made of knife bar and blade, multiple blades are along the circumferential direction uniformly installed in the lower part of knife bar；Knife bar diameter D1 is less than hydrodynamic bearing
The maximum dimension D 2 of first dynamic pressure groove region and the second dynamic pressure groove regional diameter, blade composition is equal to the first dynamic pressure groove regional diameter
The sum of with twice of dynamic pressure groove depth.
6. a kind of manufacturing method of hydrodynamic pressure bearing according to claim 5, it is characterised in that: the single blade
It is made of 4 cutting faces, i.e. the first cutting face, the second cutting face, third cutting face, the 4th cutting face.
7. a kind of manufacturing method of hydrodynamic pressure bearing according to claim 4, it is characterised in that: the dynamic pressure groove
Quantity can be odd number, can also be even numbers, recycle achievable all dynamic pressure grooves by a feed and process.
8. a kind of manufacturing method of hydrodynamic pressure bearing according to claim 5, it is characterised in that: the single group dynamic pressure
Slot is completed the process by single molding cutter blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532312.1A CN109404416A (en) | 2018-12-14 | 2018-12-14 | A kind of hydrodynamic pressure bearing and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532312.1A CN109404416A (en) | 2018-12-14 | 2018-12-14 | A kind of hydrodynamic pressure bearing and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404416A true CN109404416A (en) | 2019-03-01 |
Family
ID=65459269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811532312.1A Pending CN109404416A (en) | 2018-12-14 | 2018-12-14 | A kind of hydrodynamic pressure bearing and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404416A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10196640A (en) * | 1997-01-06 | 1998-07-31 | Koyo Seiko Co Ltd | Dynamic pressure bearing |
| TW200626808A (en) * | 2005-01-28 | 2006-08-01 | Foxconn Tech Co Ltd | Fluid dynamic bearing |
| TWI331191B (en) * | 2006-10-12 | 2010-10-01 | Jian Dih Jeng | Manufacturing tool of fluid dynamic bearing |
| CN102305237A (en) * | 2011-08-29 | 2012-01-04 | 姚文雪 | Fluid dynamic pressure bearing and fluid dynamic pressure shaft |
| KR20120043504A (en) * | 2010-10-26 | 2012-05-04 | 삼성전기주식회사 | Fluid dynamic bearing assembly |
| CN202348955U (en) * | 2011-08-29 | 2012-07-25 | 姚文雪 | Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft |
| CN202348954U (en) * | 2011-08-29 | 2012-07-25 | 姚文雪 | Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure |
| US20130148918A1 (en) * | 2009-10-02 | 2013-06-13 | Alphana Technology Co., Ltd. | Method manufacturing of fluid dynamic bearing using cutting tool that performs micro alternating drive, fluid dynamic bearing manufactured by using the method, and disk drive device using the bearing |
| US20140211341A1 (en) * | 2013-01-29 | 2014-07-31 | Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd. | Disk drive device |
-
2018
- 2018-12-14 CN CN201811532312.1A patent/CN109404416A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10196640A (en) * | 1997-01-06 | 1998-07-31 | Koyo Seiko Co Ltd | Dynamic pressure bearing |
| TW200626808A (en) * | 2005-01-28 | 2006-08-01 | Foxconn Tech Co Ltd | Fluid dynamic bearing |
| TWI331191B (en) * | 2006-10-12 | 2010-10-01 | Jian Dih Jeng | Manufacturing tool of fluid dynamic bearing |
| US20130148918A1 (en) * | 2009-10-02 | 2013-06-13 | Alphana Technology Co., Ltd. | Method manufacturing of fluid dynamic bearing using cutting tool that performs micro alternating drive, fluid dynamic bearing manufactured by using the method, and disk drive device using the bearing |
| KR20120043504A (en) * | 2010-10-26 | 2012-05-04 | 삼성전기주식회사 | Fluid dynamic bearing assembly |
| CN102305237A (en) * | 2011-08-29 | 2012-01-04 | 姚文雪 | Fluid dynamic pressure bearing and fluid dynamic pressure shaft |
| CN202348955U (en) * | 2011-08-29 | 2012-07-25 | 姚文雪 | Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft |
| CN202348954U (en) * | 2011-08-29 | 2012-07-25 | 姚文雪 | Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure |
| US20140211341A1 (en) * | 2013-01-29 | 2014-07-31 | Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd. | Disk drive device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8381695B2 (en) | Workpiece having a tribologically useable surface and method for producing such a surface | |
| CN104001958A (en) | Machining method for deep hole reducing inner cavity | |
| CN103769960B (en) | A kind of manufacture method with the ball cutter of micro-cutting sword array structure | |
| CN109404416A (en) | A kind of hydrodynamic pressure bearing and its manufacturing method | |
| CN108161340A (en) | A kind of processing technology of deep ditch ball bearing ring | |
| CN104289749B (en) | A kind of NC Milling method of annular groove | |
| CN101298104A (en) | Method for milling turbo wheel | |
| CN104475766B (en) | A kind of numerical control finish turning processing method of titanium alloy thin wall disk ring part annular Ω groove | |
| CN101905489B (en) | Machining method of precise and fine graphite electrodes by using diamond coated cutting tool | |
| CN205816834U (en) | A kind of compound tool | |
| CN104400095A (en) | End face seal groove processing method | |
| CN104930193A (en) | Sealing ring | |
| CN106312455A (en) | Machining method for split type metal sealing ring | |
| CN110695374A (en) | Groove cutting machining method | |
| CN103028954A (en) | Constant-current and constant-voltage composite type floating hydrostatic guide rail and control method thereof | |
| CN103551592B (en) | A kind of diamond roller cavity surface processing method | |
| CN211248374U (en) | Shaping cutter for improving stator quality of cycloid hydraulic motor | |
| CN108406243B (en) | Efficient cutting and finish milling process for total length of titanium alloy blade | |
| CN210280815U (en) | Novel milling cutter capable of improving machining stability | |
| CN105642918B (en) | A kind of large scale ship spiral rope groove processing method | |
| JP2011156644A (en) | Cutting method | |
| CN112404463A (en) | Processing method of zoom adjusting nut | |
| Grechishnikov et al. | Tool system for face grooving using CNC machines | |
| CN105364418A (en) | Method for machining Teflon thin-wall spiral part | |
| RU2422248C2 (en) | Method of hard-to-make turning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |