CN106763601A - Ball-screw selection designing method - Google Patents
Ball-screw selection designing method Download PDFInfo
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- CN106763601A CN106763601A CN201611247119.4A CN201611247119A CN106763601A CN 106763601 A CN106763601 A CN 106763601A CN 201611247119 A CN201611247119 A CN 201611247119A CN 106763601 A CN106763601 A CN 106763601A
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- Prior art keywords
- ball
- screw
- designing method
- selection
- workbench
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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.)
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Classifications
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0087—Computer aided design [CAD] specially adapted for gearing features ; Analysis of gear systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A kind of ball-screw selection designing method, comprises the following steps：First, the actual condition according to the workbench driven by ball-screw determines the use condition of the ball-screw；Then, the use condition selection according to the ball-screw drives the motor of the ball-screw rotation, the accuracy class of the ball-screw, axial precompressed, length, helical pitch, the diameter of axle and mounting means；The ratio of inertias of the maximum allowable rotating speed of ball-screw described in terminal check, working life and the motor.The succinct ball-screw selection designing method the invention provides a kind of system, drastically increases the accuracy and efficiency of design cycle.
Description
Technical field
It is a kind of ball-screw selection designing method specifically the invention belongs to mechanism transmission design field.
Background technology
Machine driving is primarily referred to as the transmission using mechanical system transmission power and motion, using very in mechanical engineering
Extensively.Generally, machine driving can be divided into two classes：One is that two is to lean on by frictional force transmission power and the frictional drive between parts
Driving link is engaged or by middleware engagement transmission power or the engaged transmission of motion with driven member.
Engaged transmission has the remarkable advantages such as gearratio is accurate, transmission power is big, thus more commonly used in precision drive.
Engaged transmission includes gear drive, Chain conveyer, worm drive and form etc. harmonic drive, it is general require the accuracy of manufacture higher and
Installation accuracy, the need for being transmitted with the power for meeting accurate machine construction.
Industrially more widely used is ball-screw-transmission.Ball-screw-transmission belongs to a kind of shape of worm drive
Formula, its major function is to convert rotational motion to linear movement, or moment of torsion is converted into axial repeated action power, while having concurrently
In high precision, invertibity and efficient feature.
Current ball-screw highly standardized production, project planner is calculated by designing, you can selection phase
The specifications and models answered are used.But existing design is calculated, and depends on the experience of designer more, lacks the type selecting of system
Method for designing, causes design selection process complicated and lacks accuracy.
The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of ball-screw selection designing method, effectively carry
Design efficiency high.
The purpose of the present invention is achieved through the following technical solutions：
A kind of ball-screw selection designing method, comprises the following steps：
S010：Actual condition according to the workbench driven by ball-screw determines the use bar of the ball-screw
Part；
S020：Use condition selection according to the ball-screw drives the motor of the ball-screw rotation；
S030：Use condition according to the ball-screw selects the accuracy class of the ball-screw and axial precompressed；
S040：Select the length of the ball-screw；
S050：Select the helical pitch of the ball-screw；
S060：Select the diameter of axle of the ball-screw；
S070：Select the mounting means of the ball-screw；
S080：The maximum allowable rotating speed of the ball-screw is checked, if the maximum allowable rotating speed is less than the ball wire
The working speed of thick stick, then perform S040；
S090：The working life of the ball-screw is verified, if mathematic(al) expectation is less than projected life, S040 is performed；
S100：Calculate the ball-screw, the workbench, the moment of inertia of the motor；
S110：The ratio of inertias of the motor is verified, if the ratio of inertias is more than 3, S040 is performed, otherwise type selecting is complete
Finish.
Used as the improvement of above-mentioned technical proposal, the use condition of the ball-screw includes：
The traffic direction of the ball-screw, load quality with expect service life；
The resistance of the spigot surface of the workbench connection；
The haul distance of the workbench, maximal rate, acceleration time, deceleration time and constant speed time.
Used as the further improvement of above-mentioned technical proposal, the length of the ball-screw is long equal to the stroke of the workbench
Degree, the nut length of the ball-screw and backhaul surplus sum.
Used as the further improvement of above-mentioned technical proposal, the axial precompressed is for the elimination ball-screw axial direction gap
The axial force being previously applied.
Used as the further improvement of above-mentioned technical proposal, the S050 is comprised the following steps：
S051：Choose the rated speed corresponding to the motor；
S052：Ask for the maximal rate of the workbench and the ratio of the rated speed corresponding to the motor；
S053：The ratio is rounded into the numerical value as the helical pitch.
Used as the further improvement of above-mentioned technical proposal, the S060 is comprised the following steps：
S061：According to the corresponding diameter of axle series scope of helical pitch selection；
S062：According to the rigid requirements of the ball-screw, the diameter of axle series specific diameter of axle numerical value of scope is selected.
Used as the further improvement of above-mentioned technical proposal, the mounting means of the ball-screw includes：
It is fixed-fixed：The ball-screw two ends are subject to axial direction and radial constraint；
Fixed-support：Described ball-screw one end is subject to axial direction and radial constraint, the other end to be only subject to radial constraint；
Support-support：The ball-screw two ends are only subject to radial constraint；
Fixed-freely：Described ball-screw one end is subject to axial direction and radial constraint, and the other end is in free state.
Used as the further improvement of above-mentioned technical proposal, the S080 is comprised the following steps：
S081：Mounting means according to the ball-screw selects corresponding critical speed constant, and obtains the ball
Spacing between the constriction of leading screw two ends；
S082：According to the ball-screw selected, corresponding lead screw shaft root footpath is selected；
S083：According to spacing and the leading screw between the critical speed constant, ball-screw two ends constriction
Axle root footpath calculates the maximum allowable rotating speed；
S084：The maximum allowable rotating speed and the working speed of the ball-screw are contrasted, if after the former is less than
Person, then perform S040, otherwise performs S090.
Used as the further improvement of above-mentioned technical proposal, the S090 is comprised the following steps：
S091：Calculate mean speed of the ball-screw in a complete stroke；
S092：Calculate the equivalence unit bearing load of the ball-screw；
S093：Calculate the equivalent axial direction dynamic loading of the ball-screw；
S094：Calculate the dynamic load rating of the ball-screw；
S095：The rated life time of the ball-screw is calculated according to below equation：
S096：The rated life time and projected life are contrasted, if the former is less than the latter, S040 is performed, otherwise
Perform S100.
Used as the further improvement of above-mentioned technical proposal, the S110 is comprised the following steps：
S111：The moment of inertia sum of the ball-screw and the workbench is calculated, this is load end the moment of inertia；
S112：Calculate the ratio of inertias：
S113：If the ratio of inertias is more than 3, S040 is performed, otherwise type selecting is finished.
The beneficial effects of the invention are as follows：By setting the design procedure of simplicity and clarity, with the Selection and Design side of systematization
Method, for designer provides a kind of system and succinct ball-screw selection designing method, drastically increases design cycle
Accuracy and efficiency.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
The step of Fig. 1 is the ball-screw selection designing method of the offer of the embodiment of the present invention 1 flow total figure；
Fig. 2 is the first local flow chart of the ball-screw selection designing method that the embodiment of the present invention 1 is provided；
Fig. 3 is the second local flow chart of the ball-screw selection designing method that the embodiment of the present invention 1 is provided；
Fig. 4 is the 3rd local flow chart of the ball-screw selection designing method that the embodiment of the present invention 1 is provided；
Fig. 5 is the 4th local flow chart of the ball-screw selection designing method that the embodiment of the present invention 1 is provided；
Fig. 6 is the 5th local flow chart of the ball-screw selection designing method that the embodiment of the present invention 1 is provided.
Specific embodiment
For the ease of understanding the present invention, ball-screw selection designing method is carried out more comprehensively below with reference to relevant drawings
Description.The preferred embodiment of ball-screw selection designing method is given in accompanying drawing.But, ball-screw selection designing method
Can be realized by many different forms, however it is not limited to embodiment described herein.On the contrary, providing these embodiments
Purpose be make to the disclosure of ball-screw selection designing method more it is thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Conversely, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertical ", " level ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.Herein in the term used in the description of ball-screw selection designing method
It is intended merely to describe the purpose of specific embodiment, it is not intended that the limitation present invention.Term as used herein " and/or " include
The arbitrary and all of combination of one or more related Listed Items.
Embodiment 1
Fig. 1 is referred to, a kind of ball-screw selection designing method is comprised the following steps：
S010：Actual condition according to the workbench driven by ball-screw determines the use condition of ball-screw.Work
It is main work executive item as platform, it is subject to the driving of ball-screw and in realizing guiding movement on spigot surface.Spigot surface can
Being rolling guide surface.
Wherein, the use condition of ball-screw includes：
The traffic direction of ball-screw, load quality with expect service life；
The resistance of the spigot surface of workbench connection；
The haul distance of workbench, maximal rate, acceleration time, deceleration time and constant speed time.
S020：Use condition selection according to ball-screw drives the motor of ball-screw rotation.
S030：The accuracy class of the use condition selection ball-screw according to ball-screw and axial precompressed.
Wherein, the axial force that axial precompressed is previously applied for elimination ball-screw axial direction gap.Axial precompressed has mark
The pre- tight grade of standardization and pretension coefficient corresponding with pre- tight grade.
S040：Select the length of ball-screw.
Wherein, the length of ball-screw is equal to haul distance, the nut length of ball-screw and the backhaul surplus of workbench
Sum.So-called backhaul surplus, when referring to that ball-screw changes direction of rotation, workbench is due to the deceleration reserved needed for effect of inertia
Buffer displacement amount.
S050：Select the helical pitch of ball-screw.
Refer to Fig. 2, it is preferable that S050 is comprised the following steps：
S051：Choose the rated speed corresponding to motor；
S052：Ask for the maximal rate of workbench and the ratio of the rated speed corresponding to motor；
S053：The ratio is rounded into the numerical value as helical pitch.
S060：Calculate the diameter of axle of ball-screw.
Refer to Fig. 3, it is preferable that S060 is comprised the following steps：
S061：According to the corresponding diameter of axle series scope of helical pitch selection；
S062：According to the rigid requirements of ball-screw, the selection diameter of axle series specific diameter of axle numerical value of scope.
Specifically, same helical pitch value can correspond to the multiple diameter of axle values with different rigidity.Therefore, according to ball-screw
Rigidity needed for use condition, and select the corresponding specific diameter of axle.In general, the diameter of axle is bigger, rigidity is higher and be unlikely to deform.
S070：Select the mounting means of ball-screw.
Preferably, the mounting means of ball-screw includes：
It is fixed-fixed：Ball-screw two ends are subject to axial direction and radial constraint；
Fixed-support：Ball-screw one end is subject to axial direction and radial constraint, the other end to be only subject to radial constraint；
Support-support：Ball-screw two ends are only subject to radial constraint；
Fixed-freely：Ball-screw one end is subject to axial direction and radial constraint, and the other end is in free state.
Under different mounting means, stress and the physical characteristic of ball-screw have very big difference, it is necessary to root
Subsequent check is carried out according to corresponding mounting means.
S080：The maximum allowable rotating speed of ball-screw is checked, if maximum allowable rotating speed is less than the working speed of ball-screw,
Then perform S040.
Refer to Fig. 4, it is preferable that S080 is comprised the following steps：
S081：Mounting means according to ball-screw selects corresponding critical speed constant, and obtains ball-screw two ends
Spacing between constriction.
Preferably, under fixation-fixation, fixed-support, support-support, fixation-free mounting means, critical speed is normal
Several numerical value is respectively 1,0.689,0.441,0.157.
S082：According to the ball-screw selected, corresponding lead screw shaft root footpath is selected.So-called lead screw shaft root footpath, refers to rolling
The raceway groove root diameter (RD) of ballscrew.
S083：Calculated most according to the spacing between critical speed constant, ball-screw two ends constriction and lead screw shaft root footpath
Big permissible revolution.
Specifically, the computing formula of maximum allowable rotating speed is as follows：
S084：Maximum allowable rotating speed is contrasted with the working speed of ball-screw, if the former is less than the latter, is performed
S040, otherwise performs S090.
S090：The working life of ball-screw is verified, if mathematic(al) expectation is less than projected life, S040 is performed.
Refer to Fig. 5, it is preferable that the S090 is comprised the following steps：
S091：Calculate mean speed of the ball-screw in a complete stroke；
S092：Calculate the equivalence unit bearing load of the ball-screw；
S093：Calculate the equivalent axial direction dynamic loading of the ball-screw；
S094：Calculate the dynamic load rating of the ball-screw；
S095：The rated life time of the ball-screw is calculated according to below equation：
S096：The rated life time and projected life are contrasted, if the former is less than the latter, S040 is performed, otherwise
Perform S100.
S100：Calculate ball-screw, workbench, the moment of inertia of motor.
S110：The ratio of inertias of motor is verified, if ratio of inertias is more than 3, S040 is performed, otherwise type selecting is finished.
Refer to Fig. 6, it is preferable that the S110 is comprised the following steps：
S111：The moment of inertia sum of ball-screw and workbench is calculated, this is load end the moment of inertia；
S112：Calculate ratio of inertias：
S113：If ratio of inertias is more than 3, S040 is performed, otherwise type selecting is finished.
In all examples being illustrated and described herein, any occurrence should be construed as merely exemplary, without
Be as limitation, therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore limitation of the scope of the invention can not be interpreted as.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention
Enclose.Therefore, protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of ball-screw selection designing method, it is characterised in that comprise the following steps：
S010：Actual condition according to the workbench driven by ball-screw determines the use condition of the ball-screw；
S020：Use condition selection according to the ball-screw drives the motor of the ball-screw rotation；
S030：Use condition according to the ball-screw selects the accuracy class of the ball-screw and axial precompressed；
S040：Select the length of the ball-screw；
S050：Select the helical pitch of the ball-screw；
S060：Select the diameter of axle of the ball-screw；
S070：Select the mounting means of the ball-screw；
S080：The maximum allowable rotating speed of the ball-screw is checked, if the maximum allowable rotating speed is less than the ball-screw
Working speed, then perform S040；
S090：The working life of the ball-screw is verified, if mathematic(al) expectation is less than projected life, S040 is performed；
S100：Calculate the ball-screw, the workbench, the moment of inertia of the motor；
S110：The ratio of inertias of the motor is verified, if the ratio of inertias is more than 3, S040 is performed, otherwise type selecting is finished.
2. ball-screw selection designing method according to claim 1, it is characterised in that the use bar of the ball-screw
Part includes：
The traffic direction of the ball-screw, load quality with expect service life；
The resistance of the spigot surface of the workbench connection；
The haul distance of the workbench, maximal rate, acceleration time, deceleration time and constant speed time.
3. ball-screw selection designing method according to claim 1, it is characterised in that length of the ball-screw etc.
The nut length and backhaul surplus sum of haul distance, the ball-screw in the workbench.
4. ball-screw selection designing method according to claim 1, it is characterised in that the axial precompressed is to eliminate institute
The axial force stated ball-screw axial direction gap and be previously applied.
5. ball-screw selection designing method according to claim 1, it is characterised in that the S050 includes following step
Suddenly：
S051：Choose the rated speed corresponding to the motor；
S052：Ask for the maximal rate of the workbench and the ratio of the rated speed corresponding to the motor；
S053：The ratio is rounded into the numerical value as the helical pitch.
6. ball-screw selection designing method according to claim 1, it is characterised in that the S060 includes following step
Suddenly：
S061：According to the corresponding diameter of axle series scope of helical pitch selection；
S062：According to the rigid requirements of the ball-screw, the diameter of axle series specific diameter of axle numerical value of scope is selected.
7. ball-screw selection designing method according to claim 1, it is characterised in that the installation side of the ball-screw
Formula includes：
It is fixed-fixed：The ball-screw two ends are subject to axial direction and radial constraint；
Fixed-support：Described ball-screw one end is subject to axial direction and radial constraint, the other end to be only subject to radial constraint；
Support-support：The ball-screw two ends are only subject to radial constraint；
Fixed-freely：Described ball-screw one end is subject to axial direction and radial constraint, and the other end is in free state.
8. ball-screw selection designing method according to claim 1, it is characterised in that the S080 includes following step
Suddenly：
S081：Mounting means according to the ball-screw selects corresponding critical speed constant, and obtains the ball-screw
Spacing between the constriction of two ends；
S082：According to the ball-screw selected, corresponding lead screw shaft root footpath is selected；
S083：According to the spacing between the critical speed constant, ball-screw two ends constriction and the lead screw shaft root
Footpath calculates the maximum allowable rotating speed；
S084：The maximum allowable rotating speed and the working speed of the ball-screw are contrasted, if the former is less than the latter,
S040 is performed, S090 is otherwise performed.
9. ball-screw selection designing method according to claim 1, it is characterised in that the S090 includes following step
Suddenly：
S091：Calculate mean speed of the ball-screw in a complete stroke；
S092：Calculate the equivalence unit bearing load of the ball-screw；
S093：Calculate the equivalent axial direction dynamic loading of the ball-screw；
S094：Calculate the dynamic load rating of the ball-screw；
S095：The rated life time of the ball-screw is calculated according to below equation：
S096：The rated life time and projected life are contrasted, if the former is less than the latter, S040 is performed, is otherwise performed
S100。
10. ball-screw selection designing method according to claim 1, it is characterised in that the S110 includes following step
Suddenly：
S111：The moment of inertia sum of the ball-screw and the workbench is calculated, this is load end the moment of inertia；
S112：Calculate the ratio of inertias：
S113：If the ratio of inertias is more than 3, S040 is performed, otherwise type selecting is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247119.4A CN106763601A (en) | 2016-12-29 | 2016-12-29 | Ball-screw selection designing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247119.4A CN106763601A (en) | 2016-12-29 | 2016-12-29 | Ball-screw selection designing method |
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| Publication Number | Publication Date |
|---|---|
| CN106763601A true CN106763601A (en) | 2017-05-31 |
Family
ID=58929168
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611247119.4A Pending CN106763601A (en) | 2016-12-29 | 2016-12-29 | Ball-screw selection designing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112835325A (en) * | 2021-01-03 | 2021-05-25 | 清华大学 | Servo motor model selection method for ball screw feeding system |
| CN117272551A (en) * | 2023-11-20 | 2023-12-22 | 苏州致将智能光电有限公司 | Most preferred type method of ball screw in optical image quality monitoring system |
-
2016
- 2016-12-29 CN CN201611247119.4A patent/CN106763601A/en active Pending
Non-Patent Citations (5)
| Title |
|---|
| 付承云: "《数控功能部件选用指导手册》", 31 March 2011, 机械工业出版社 * |
| 庞学慧: "《金属切削机床》", 31 July 2015, 国防工业出版社 * |
| 李绍炎: "《自动机与自动线》", 28 February 2007, 清华大学出版社 * |
| 王军锋等: "伺服电机选型的原则和注意事项", 《装备制造技术》 * |
| 范超毅等: "《数控技术课程设计》", 31 May 2007, 华中科技大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112835325A (en) * | 2021-01-03 | 2021-05-25 | 清华大学 | Servo motor model selection method for ball screw feeding system |
| CN117272551A (en) * | 2023-11-20 | 2023-12-22 | 苏州致将智能光电有限公司 | Most preferred type method of ball screw in optical image quality monitoring system |
| CN117272551B (en) * | 2023-11-20 | 2024-01-30 | 苏州致将智能光电有限公司 | Most preferred type method of ball screw in optical image quality monitoring system |
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