CN109101733A - A kind of high-speed electric main shaft rolling bearing oil-air lubrication design method - Google Patents
A kind of high-speed electric main shaft rolling bearing oil-air lubrication design method Download PDFInfo
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- CN109101733A CN109101733A CN201810936168.1A CN201810936168A CN109101733A CN 109101733 A CN109101733 A CN 109101733A CN 201810936168 A CN201810936168 A CN 201810936168A CN 109101733 A CN109101733 A CN 109101733A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
- B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6662—Details of supply of the liquid to the bearing, e.g. passages or nozzles the liquid being carried by air or other gases, e.g. mist lubrication
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/667—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to conditioning, e.g. cooling, filtering
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6674—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to the amount supplied, e.g. gaps to restrict flow of the liquid
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6688—Lubricant compositions or properties, e.g. viscosity
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/32—Circuit design at the digital level
- G06F30/333—Design for testability [DFT], e.g. scan chain or built-in self-test [BIST]
Abstract
The present invention provides a kind of high-speed electric main shaft rolling bearing oil-air lubrication design methods, belong to rolling bearing cooling and lubricating technical field.The designing technique is the following steps are included: step 1, the configuration design of high-speed electric main shaft rolling bearing oil gas lubricating system；Step 2, high speed roller bearing oil gas nozzle arrangements design；Step 3, high speed roller bearing oil gas parameter designing.The designing technique proposes a kind of basic configuration scheme of oil gas lubricating system, provides the technical method of a kind of oil gas nozzle arrangements design and oil gas parameter selection.Using high-speed electric main shaft rolling bearing oil-air lubrication designing technique provided by the invention, the lubricant effect of high-speed electric main shaft rolling bearing oil gas lubricating system can be effectively improved, the operating temperature rise of high-speed electric main shaft rolling bearing is greatly reduced, extends the service life of high-speed electric main shaft rolling bearing.
Description
Technical field
The present invention relates to a kind of high-speed electric main shaft rolling bearing oil-air lubrication design methods, belong to high-speed processing machine tool main shaft
Unit design field.
Background technique
High-speed electric main shaft is the core functional components of high-speed processing machine tool, and electro spindle performance has been largely fixed lathe
Overall performance.With the development of High-speed machining, high-speed electric main shaft revolving speed is continuously improved, and rolling bearing calorific value steeply rises,
This proposes requirements at the higher level to the cooling and lubricating technology of rolling bearing.Traditional bearing lubrication mode (lubrication by oil circulation, rouge profit
Cunning, oil jet lubrication, fog lubrication) have been unable to meet the use needs of high-speed electric main shaft bearing.Oil Gas Lubrication Technology, greasy property
Good, environmental pollution is small, and bearing can be made to have many advantages, such as that limit speed is high, temperature rise is small, the service life is long, which is high speed, ultrahigh speed
The ideal lubricating system of lathe rolling bearing.
The configuration of high-speed electric main shaft oil gas lubricating system designs, the concrete structure design of lubricating nozzle, oil-air lubrication parameter
The designing techniques such as selection, have larger impact to rolling bearing oil-air lubrication effect, rolling can be greatly improved in reasonable design
The service performance of bearing.However, up to the present, oil gas lubricating system design relies on engineer personal experience more, there is not yet
There is the patent of invention report of mature oil gas lubricating system designing technique.For this demand, the present invention provides a kind of high speeds
Electro spindle rolling bearing oil-air lubrication designing technique, content include petroleum system configuration, oil gas nozzle and oil-air lubrication parameter
Determine method.
Summary of the invention
Technical problem: high-speed electric main shaft rolling bearing oil gas lubricating system design aspect there are aiming at the problem that, the present invention
Propose a kind of high-speed electric main shaft rolling bearing oil-air lubrication design method, it is intended to the performance of rolling bearing oil-air lubrication is improved,
The operating temperature rise of high-speed electric main shaft rolling bearing is reduced, the service life of high-speed electric main shaft rolling bearing is extended.
Technical solution: a kind of high-speed electric main shaft rolling bearing oil-air lubrication design method of the invention the following steps are included:
Step 1: the configuration design of high-speed electric main shaft rolling bearing oil gas lubricating system completes high pressure gas and generates system, gas
The design work of body filtration system, oil gas generating system, builds that supply gas pressure is adjustable, fuel delivery is controllable, stable and reliable in work
Oil-air lubrication basic system；
Step 2: the design of high-speed electric main shaft rolling bearing oil gas nozzle arrangements, it is long that test nozzles export number, jet expansion
Diameter determines geometry than influence of the 3 nozzle key geometric parameters of distance to bearing working temperature rise of, jet expansion to bearing sphere
The best value of parameter promotes oil-air lubrication effect to reduce bearing temperature rise；
Step 3: high-speed electric main shaft rolling bearing oil gas parameter designing tests oil gas service length, lubricating oil fuel feeding
The influence of amount, oil gas supply gas pressure, lubricating oil oil types 4 crucial oil gas parameters to bearing working temperature rise, determines crucial oil
The best value of gas parameter promotes oil-air lubrication effect to reduce bearing temperature rise, extends bearing service life.
Wherein:
The step 1: the configuration design of high-speed electric main shaft rolling bearing oil gas lubricating system, the system configuration specifically include height
Fast electro spindle and frequency converter, circulating water equipment, oil gas generator, cooling driers, air compressor and filter, air accumulator,
Thermocouple；Air compressor generates high pressure gas, and high pressure gas reaches air accumulator through filter, then through cooling driers, with constant pressure
Force flow is through oil gas generator；Lubricating oil is infused high-pressure gas pipeline by oil gas generator, and oil gas is finally transported to by lubrication bearing；
It is close to bearing outer ring and is disposed with thermocouple, for measures the temperature rise of bearing.
The step 2: high-speed electric main shaft rolling bearing oil gas nozzle arrangements design, nozzle arrangements by oil gas chamber, outlet with
And outer wall construction composition, oil gas enter oil gas chamber from entrance, are delivered to exit through oil gas chamber, through outlet pressurized jet to high speed
The rolling element of rolling bearing, oil gas nozzle arrangements design detailed process point or less three steps:
Step 2a: determining jet expansion number, tests influence of the jet expansion number to rolling bearing temperature rise under different operating conditions
Situation finds the corresponding jet expansion number of lowest temperature rise point, determines jet expansion number；
Step 2b: determining jet expansion draw ratio, tests under different operating conditions jet expansion draw ratio to rolling bearing temperature rise
Influence situation, find the corresponding jet expansion draw ratio of lowest temperature rise point, determine jet expansion draw ratio L/d value；
Step 2c: determine that jet expansion to the distance of bearing sphere, tests under different operating conditions jet expansion to bearing sphere
Influence of the distance to rolling bearing temperature rise, find the distance that the corresponding jet expansion of lowest temperature rise point arrives bearing sphere, determination
Distance s value of the jet expansion to bearing sphere.
The step 3: four steps of high-speed electric main shaft rolling bearing oil gas parameter designing detailed process point or less:
Step 3a: oil gas service Design of length tests influence of the duct length to oil-air lubrication effect, according to test
As a result, finding the corresponding oil gas service length of lowest temperature rise point, suitable oil gas service length is selected；
Step 3b: the design of lubricating oil fuel delivery is tested influence of the fuel feeding oil mass to oil-air lubrication effect, is tied according to test
Fruit finds the corresponding lubricating oil fuel delivery of lowest temperature rise point, determines suitable fuel delivery.
Step 3c: the design of oil gas supply gas pressure is tested influence of the supply gas pressure to oil-air lubrication effect, is tied according to test
Fruit finds the corresponding oil gas supply gas pressure of lowest temperature rise point, determines suitable supply gas pressure.
Step 3d: the selection of lubricating oil oil types is tested influence of the oil types to oil-air lubrication effect, is tied according to test
Fruit finds the corresponding lubricating oil oil types of lowest temperature rise point, selects suitable lubricating oil oil types.
The utility model has the advantages that high-speed electric main shaft rolling bearing oil gas lubricating system designing technique provided by the invention, for high speed electricity
The design of main shaft rolling bearing oil gas lubricating system provides effective means, significantly improves the lubrication effect of oil gas lubricating system
Fruit reduces the operating temperature rise of high-speed electric main shaft rolling bearing, extends the service life of high-speed electric main shaft rolling bearing.
Detailed description of the invention
Fig. 1 is the process of high-speed electric main shaft rolling bearing oil gas lubricating system designing technique of the present invention；
Fig. 2 is the configuration of high-speed electric main shaft rolling bearing oil gas lubricating system；
Fig. 3 is the structure and working principle of high-speed electric main shaft rolling bearing oil gas nozzle；
Fig. 4 is influence curve of the jet expansion number to bearing temperature rise；
Fig. 5 is influence curve of the jet expansion draw ratio to bearing temperature rise；
Fig. 6 be jet expansion to bearing sphere distance value to the influence curve of bearing temperature rise；
Fig. 7 is influence curve of the oil gas service length to bearing temperature rise；
Fig. 8 a is the lubricating oil fuel feeding period (corresponding corresponding fuel delivery) to the influence curve of steel ball bearing temperature rise；
Fig. 8 b is the lubricating oil fuel feeding period (corresponding corresponding fuel delivery) to the influence curve of hybrid ceramic ball bearing temperature rise.
Have in figure: oil gas chamber 1, outlet 2, outer wall 3, electro spindle 4, air compressor 5, filter 6, air accumulator 7, cooling driers
8, oil gas generator 9, oil gas nozzle 10, high speed roller bearing 11, frequency converter 12, cooling water circulating apparatus 13, thermocouple 14.
Specific embodiment
Below with reference to one embodiment (high-speed electric main shaft steel ball bearing 7006C and hybrid ceramic ball bearing B7006C oil gas
Lubrication System Design), high-speed electric main shaft rolling bearing oil gas lubricating system designing technique of the invention is made further specifically
It is bright.
Fig. 1 gives the particular content of high-speed electric main shaft rolling bearing oil gas lubricating system designing technique of the present invention, including
Following steps:
Step 1: the configuration design of high-speed electric main shaft rolling bearing oil gas lubricating system.As shown in Fig. 2, air compressor 5 is held
Continuous constantly to provide compressed air, compressed air reaches air accumulator 7, warp after tertiary filter 6 cleans (dust, particulate matter)
It crosses cooling driers 8 and removes steam, oil gas generator 9 is flowed through with constant pressure；Oil gas generator 9 is periodically by lubricating oil with oil droplet
In form injecting compressed air pipeline, it is transported to oil site；Frequency converter 12 controls the revolving speed of high-speed electric main shaft 4, and adjustable range is
5000rpm~50000rpm；Thermocouple 14 is used to measure the temperature rise of electro spindle inner bearing, evaluates oil according to bearing temperature rise size
Gas lubricant effect, temperature rise is bigger, and oil-air lubrication effect is poorer, and temperature rise is smaller, and oil-air lubrication effect is better.
Step 2: the design of high-speed electric main shaft rolling bearing oil gas nozzle arrangements specifically includes the design of jet expansion number, spray
The design of mouth draw ratio and the distance of nozzle to bearing sphere design.Specific design process point or less three steps:
Step 2a: determining jet expansion number, respectively test ball bearing and ceramic ball bearing in 20000rpm and
Under 30000rpm revolving speed, as a result influence situation of the different jet expansion numbers to bearing temperature rise is shown in Fig. 4, according to test result, really
Determining jet expansion number is 2.
Step 2b: determining jet expansion draw ratio, respectively test ball bearing and ceramic ball bearing in 20000rpm and
Under 30000rpm revolving speed, as a result influence situation of the different draw ratio L/d to bearing temperature rise is shown in Fig. 5, long according to test result
Diameter ratio is selected as 3.2.
Step 2c: jet expansion is determined to the distance of bearing sphere, test ball bearing and ceramic ball bearing exist respectively
Under 20000rpm and 30000rpm revolving speed, influence feelings of the distance value of different jet expansion to bearing sphere to bearing temperature rise
As a result condition is shown in Fig. 6, according to test result, select jet expansion to the distance s value of bearing sphere be 6.4mm.
Step 3: high-speed electric main shaft rolling bearing oil gas parameter designing is carried out, process can be divided into following four step:
Step 3a: oil gas service Design of length selects outer diameter 10mm, and the plastic conduit of internal diameter 6.5mm is as oil gas
Conveyance conduit is selected the pipeline of five kinds of length of 1m, 1.5m, 2m, 2.5m, 3m to carry out oil-air lubrication experimental study respectively, is as a result seen
Fig. 7.For steel ball bearing, temperature rise is minimum when duct length is 1.5m.When pipeline shortens or increases, temperature rise all gradually increases
Add；The temperature rise of ceramic ball bearing is gradually slowly increased with the increase of duct length.To sum up, steel ball bearing oil supply pipe length
It is selected as 1.5m；In the case where not influencing use, ceramic ball bearing oil supply pipe is answered the smaller the better.
Step 3b: tri- kinds of revolving speeds of 10000rpm, 20000rpm and 30000rpm are tested in the design of lubricating oil fuel delivery respectively
Under, by changing fuel feeding cyclomorphosis fuel delivery in test, the different fuel feeding periods are tested to hybrid ceramic ball bearing and steel ball axis
The influence for holding temperature rise, is as a result shown in Fig. 8.According to test result, when determining speed of mainshaft 10000rpm, the fuel feeding period is selected in 4min
Left and right, fuel delivery 0.003125ml/min；When speed of mainshaft 20000rpm, the fuel feeding period is selected in 2min or so, fuel delivery
For 0.00625ml/min；When speed of mainshaft 30000rpm, the fuel feeding period selects 1min or so, and fuel delivery is.The speed of mainshaft is got over
Height, bearing heating amount is bigger, and oil gas fuel delivery also should be bigger, when within 30000rpm revolving speed, the supply of 0.0125ml/min oil gas
Amount can meet the lubrication needs of two bearing.
Step 3c: the design of oil gas supply gas pressure tests different rotating speeds, influence of the charge oil pressure to bearing temperature rise.According to
Test result knows that oil gas supply gas pressure is bigger, and bearing temperature rise is smaller, and oil-air lubrication cooling effect is better.This petroleum system is maximum
Supply gas pressure is 0.5Mpa, and oil gas supply gas pressure is selected in 0.4Mpa or so.
Step 3d: the selection of lubricating oil oil types is supplied in revolving speed 20000rpm, fuel feeding period 2min, revolving speed 30000rpm
Under two kinds of operating conditions of oily period 1min, machinery oil, antiwear hydraulic oil and rail oil lubrication effect are tested respectively, as a result
It is shown in Table 1.According to test result, determine that hybrid ceramic ball bearing and the design of steel ball bearing oil-air lubrication should select rail oil.
Influence of 1 lubricating oil types of table to bearing temperature rise
The present embodiment is set with high-speed electric main shaft steel ball bearing 7006C and hybrid ceramic ball bearing B7006C oil gas lubricating system
Example is calculated as to be described further.The basic system configuration of oil-air lubrication has been determined by step 1 to step 3；Utilize test bearing temperature
The method for rising to evaluate oil-air lubrication effect, it is determined that three important geometric parameters of nozzle, wherein jet expansion number is 2
A, draw ratio L/d is selected as 3.2, and jet expansion is selected as 6.4mm to bearing sphere distance s；Summarize fuel feeding pipe range, fuel feeding
Size is measured, the oil-air lubrications such as oil gas supply gas pressure and oil types parameter determines the affecting laws of oil-air lubrication profit effect
Best oil gas lubrication parameter under different operating conditions.The design method effectively increases the performance effect of two bearing oil-air lubrication
Fruit, significantly reduces the operating temperature rise of two bearing, substantially extends the service life of two bearing.
Claims (4)
1. a kind of high-speed electric main shaft rolling bearing oil-air lubrication design method, it is characterised in that method includes the following steps:
Step 1: the configuration design of high-speed electric main shaft rolling bearing oil gas lubricating system completes high pressure gas and generates system, gas mistake
The oil gas that supply gas pressure is adjustable, fuel delivery is controllable, stable and reliable in work is built in the design work of filter system, oil gas generating system
Lubrication base system；
Step 2: high-speed electric main shaft rolling bearing oil gas nozzle arrangements design, test nozzles export number, jet expansion draw ratio,
Jet expansion determines geometric parameter to influence of the 3 nozzle key geometric parameters of distance to bearing working temperature rise of bearing sphere
Best value promote oil-air lubrication effect to reduce bearing temperature rise；
Step 3: high-speed electric main shaft rolling bearing oil gas parameter designing tests oil gas service length, lubricating oil fuel delivery, oil
The influence of gas supply gas pressure, lubricating oil oil types 4 crucial oil gas parameters to bearing working temperature rise, determines key oil gas parameter
Best value promote oil-air lubrication effect to reduce bearing temperature rise, extend bearing service life.
2. a kind of high-speed electric main shaft rolling bearing oil-air lubrication design method according to claim 1, which is characterized in that institute
State step 1: the configuration design of high-speed electric main shaft rolling bearing oil gas lubricating system, the system configuration specifically include high-speed electric main shaft
(4) and frequency converter (12), circulating water equipment (13), oil gas generator (9), cooling driers (8), air compressor (5) and mistake
Filter (6), air accumulator (7), thermocouple (14)；Air compressor (5) generates high pressure gas, and high pressure gas is arrived through filter (6)
Up to air accumulator (7), then through cooling driers (8), oil gas generator (9) are flowed through with constant pressure；Oil gas generator (9) infuses lubricating oil
High-pressure gas pipeline, oil gas are finally transported to by lubrication bearing；It is close to bearing outer ring and is disposed with thermocouple (14), for measures
The temperature rise of bearing.
3. a kind of high-speed electric main shaft rolling bearing oil-air lubrication design method according to claim 1, which is characterized in that institute
State step 2: the design of high-speed electric main shaft rolling bearing oil gas nozzle arrangements, nozzle arrangements are by oil gas chamber (1), outlet (2) and outer
Wall (3) structure composition, oil gas enter oil gas chamber (1) from entrance, are delivered at outlet (2) through oil gas chamber (1), are exported (2) and added
Rolling element of the pressure injection to high speed roller bearing, three steps of oil gas nozzle arrangements design detailed process point or less:
Step 2a: determining jet expansion number, tests influence situation of the jet expansion number to rolling bearing temperature rise under different operating conditions,
The corresponding jet expansion number of lowest temperature rise point is found, determines jet expansion number；
Step 2b: determining jet expansion draw ratio, tests under different operating conditions jet expansion draw ratio to the shadow of rolling bearing temperature rise
Situation is rung, the corresponding jet expansion draw ratio of lowest temperature rise point is found, determines jet expansion draw ratio L/d value；
Step 2c: determine jet expansion to bearing sphere distance, test jet expansion under different operating conditions to bearing sphere away from
From the influence to rolling bearing temperature rise, the corresponding jet expansion of lowest temperature rise point is found to the distance of bearing sphere, determines nozzle
Export to the distance s value of bearing sphere.
4. a kind of high-speed electric main shaft rolling bearing oil-air lubrication design method according to claim 1, which is characterized in that institute
State step 3: four steps of high-speed electric main shaft rolling bearing oil gas parameter designing detailed process point or less:
Step 3a: oil gas service Design of length is tested influence of the duct length to oil-air lubrication effect, is tied according to test
Fruit finds the corresponding oil gas service length of lowest temperature rise point, selects suitable oil gas service length；
Step 3b: the design of lubricating oil fuel delivery is tested influence of the fuel feeding oil mass to oil-air lubrication effect and is sought according to test result
The corresponding lubricating oil fuel delivery of lowest temperature rise point is looked for, determines suitable fuel delivery.
Step 3c: the design of oil gas supply gas pressure is tested influence of the supply gas pressure to oil-air lubrication effect and is sought according to test result
The corresponding oil gas supply gas pressure of lowest temperature rise point is looked for, determines suitable supply gas pressure.
Step 3d: influence of the oil types to oil-air lubrication effect is tested in the selection of lubricating oil oil types, according to test result,
The corresponding lubricating oil oil types of lowest temperature rise point are found, suitable lubricating oil oil types are selected.
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| CN201810936168.1A CN109101733A (en) | 2018-08-16 | 2018-08-16 | A kind of high-speed electric main shaft rolling bearing oil-air lubrication design method |
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|---|---|---|---|---|
| CN109693144A (en) * | 2019-02-22 | 2019-04-30 | 江苏思维福特机械科技股份有限公司 | A kind of electric chief axis system and replenishing method that grease is fed automatically |
| WO2021243908A1 (en) * | 2020-06-05 | 2021-12-09 | 泉州市海恩德机电科技发展有限公司 | Cutting machine having quick heat dissipation function |
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Application publication date: 20181228 |