CN209069469U - Ball-screw moment of friction device for dynamically detecting - Google Patents
Ball-screw moment of friction device for dynamically detecting Download PDFInfo
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- CN209069469U CN209069469U CN201822196210.9U CN201822196210U CN209069469U CN 209069469 U CN209069469 U CN 209069469U CN 201822196210 U CN201822196210 U CN 201822196210U CN 209069469 U CN209069469 U CN 209069469U
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Abstract
The utility model discloses a kind of ball-screw moment of friction device for dynamically detecting, belong to machine-building collimation technique field.By the way that load cell, bracket and guide rail are arranged in the shield of measuring mechanism, while the first axle body, the support of bearing of the second axle body and guide rail being installed and cooperated, by being connect at the top of ball screw assembly, and the support of bearing, ball screw assembly, cooperation socket ball-screw；The driving wheel of servo motor is cooperated by synchronous belt and driven wheel, then drives clamping ball screw turns by driven wheel, to realize the translation of ball screw assembly,；Meanwhile by the cooperative movement of the first and second ceramic bearing and guide rail that are arranged on the first and second axis body, the detection of slight moment is finally realized, and simultaneously can positive and negative two-way carry out moment inspecting.The utility model solves that detection error existing in the prior art is big, and technical problem complicated for operation realizes accurate detection, and structure is simple, stability is strong and easy to operate, while being able to carry out the purpose of different moment values detections.
Description
Technical field
The utility model belongs to machine-building collimation technique field, is related to a kind of ball-screw moment of friction dynamic detection dress
It sets.
Background technique
Along with the rapid development of China's economy, numerically-controlled machine tool also develops to high speed and high-precision direction, ball wire
The required precision of thick stick also increases.The moment of friction of ball-screw is an important indicator of lead screw performance.At home, lead screw
Also in a relatively backward stage, current medium and small lead screw enterprise, which mostly takes by worker's feel, to be sentenced for the detection of moment of friction
Determine whether moment of friction complies with standard, thus cause detection error very big, while complicated for operation, it is time-consuming and laborious.
Therefore, a kind of ball-screw moment of friction device for dynamically detecting is needed, detection existing in the prior art is solved and misses
Poor big, complicated for operation technical problem realizes precisely detection, and structure is simple, stability is strong and easy to operate, is able to carry out simultaneously
The purpose of different moment values detections.
Summary of the invention
In order to achieve the above object, the utility model provides a kind of ball-screw moment of friction device for dynamically detecting, solves
The problem existing in the prior art that structure is complicated, at high cost, detection accuracy is low and performance is unstable, and realize different torques
It is worth the purpose of detection.
Technical solution used by the utility model is to provide a kind of ball-screw moment of friction device for dynamically detecting, work
Measuring mechanism is installed by screw on platform, the measuring mechanism includes shield, bracket, guide rail and the support of bearing of square structure；
The shield bottom is equipped with bottom plate, top mounting strap cover board；The plate upper surface is arranged in parallel two and stands
Plate, described two each self-retaining load cells of vertical plate, the load cell and bracket are inconsistent；The shield is bordering on bracket
Plate face both ends proximity sensor is respectively equipped with by screw；
Guide rail is connected among the bracket, cooperation is socketed with the first ceramic bearing and the second ceramic shaft on the guide rail
It holds, first ceramic bearing and the second ceramic bearing positional symmetry；It is cased with the first axle body in first ceramic bearing, it is described
The top of the first axle body is socketed first axle bearing sleeve；The second axle body, the top of the second axle body are cased in second ceramic bearing
Portion is socketed second bearing set；The first axle body, the second axle body are installed on the support of bearing；
The axle sleeve of socket vertical direction setting, the top of the axle sleeve connect ball screw assembly, in the middle part of the support of bearing,
The ball screw assembly, cooperation is socketed on ball-screw；One end of the ball-screw is secured transverse in scroll chuck, institute
It states scroll chuck to be fixedly connected with driven wheel, synchronous belt is set between the driven wheel and driving wheel；The driving wheel is fixed to be connected
Connect servo motor；Installation speed encoder between the driving wheel and driven wheel.
Further, the load cell, proximity sensor are electrically connected with computer.
Further, the axle sleeve and guide rail be in the same plane.
Further, plane where the support of bearing is perpendicular to guide rail.
The beneficial effects of the utility model are:
1. the utility model structure is simple, at low cost, detection accuracy is high, and performance is stablized convenient for operation.
2. the detection of slight moment not only may be implemented in the utility model, but also can realize positive and negative two-way torque inspection simultaneously
It surveys, significantly improves detection efficiency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the main view of ball-screw moment of friction device for dynamically detecting.
Fig. 2 is the measuring mechanism main view of ball-screw moment of friction device for dynamically detecting.
Fig. 3 is the measuring mechanism top view of ball-screw moment of friction device for dynamically detecting.
Fig. 4 is the measuring mechanism left view of ball-screw moment of friction device for dynamically detecting.
In figure, 1. workbench；2. measuring mechanism；3. ball screw assembly,；4. ball-screw；5. computer；6. driven wheel；7.
Synchronous belt；8. speed encoder；9. servo motor；10. driving wheel；11. shield；12. load cell；13. vertical plate；14. leading
Rail；15. bracket；16-1. the first axle body；16-2. the second axle body, the first ceramic bearing of 17-1.；The second ceramic bearing of 17-2.,
18-1. first axle bearing sleeve；18-2. second bearing set；19. the support of bearing；20. axle sleeve；21. proximity sensor；22. shroud cover
Plate；23. bottom plate；24. sensing chip, 25. handwheels, 26. scroll chucks.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
One, the structure of the utility model embodiment
Referring to attached drawing 1-4.The utility model discloses a kind of ball-screw moment of friction device for dynamically detecting, workbench 1
Upper to install measuring mechanism 2 by screw, measuring mechanism 2 includes shield 11, bracket 15, guide rail 14 and the support of bearing of square structure
19；
11 bottom of shield is equipped with bottom plate 23, top mounting strap cover board 22；23 upper surface of bottom plate is arranged in parallel two and stands
Plate 13, two each self-retaining load cells 12 of vertical plate 13, load cell 12 and bracket 15 are inconsistent；Shield 11 is bordering on bracket
15 plate face both ends are respectively equipped with proximity sensor 21 by screw；
Guide rail 14 is connected among bracket 15, cooperation is socketed with the first ceramic bearing 17-1 and the second ceramic shaft on guide rail 14
Hold 17-2, the first ceramic bearing 17-1 and the second ceramic bearing 17-2 positional symmetry；First is cased in first ceramic bearing 17-1
The top of axis body 16-1, the first axle body 16-1 are socketed first axle bearing sleeve 18-1；The second axle body is cased in second ceramic bearing 17-2
The top socket second bearing of 16-2, the second axle body 16-2 cover 18-2；The first axle body 16-1, the second axle body 16-2 are installed in axis
It holds on bracket 19；
The axle sleeve 20 of vertical direction setting is socketed in the middle part of the support of bearing 19, the top of axle sleeve 20 connects ball screw assembly, 3, rolling
3 cooperation of ballscrew pair is socketed on ball-screw 4；One end of ball-screw 4 is secured transverse in scroll chuck 26, scroll chuck
26 are fixedly connected with driven wheel 6, and synchronous belt 7 is arranged between driven wheel 6 and driving wheel 10；Driving wheel 10 is fixedly connected with servo motor
9；Installation speed encoder 8 between driving wheel 10 and driven wheel 6.
Load cell 12, proximity sensor 21 are electrically connected with computer 5.
Axle sleeve 20 and guide rail 14 are in the same plane.
19 place plane of the support of bearing is perpendicular to guide rail 14.
Two, the working principle of the utility model embodiment
As shown in Figure 1, installing measuring mechanism 2 by screw on workbench 1, ball screw assembly, 3 being rotated to ball wire
The center of thick stick 4 holds out against the clamping of ball-screw 4 according to Fig. 1 and is installed on workbench 1；And driven wheel 6 is successively installed, together
Walk band 7, servo motor 9, driving wheel 10 and speed encoder 8；As shown in figure 3, vertical plate 13 is installed to bottom plate by screw
On 23, load cell 12, bracket 15, shield 11 successively equally are installed using screw；Proximity sensor 21 is tightened with nut
It is fixed on shield 11；Guide rail 14 is installed between bracket 15, both ends are held out against with jackscrew；As shown in figure 4, by screw shield
Cover plate 22 is fixed on shield 11；The first axle body 16-1, the second axle body 16-2 are placed on the first ceramic bearing 17-1, respectively
On two ceramic bearing 17-2；First axle bearing sleeve 18-1, second bearing set 18-2 are respectively sleeved in the first axle body 16-1, the second axis again
On body 16-2；Then the first axle body 16-1, the second axle body 16-2 are fixed on the support of bearing 19 using screw, while utilize spiral shell
Fixed sensing chip 24 is followed closely on the support of bearing 19；Finally the support of bearing 19 and ball screw assembly, 3 are connected by screw with axle sleeve 20
It is connected together, while guaranteeing that the first axle body 16-1, the axial line of the second axle body 16-2 are symmetrical relative to guide rail 14.
As shown in figure 3, by synchronous belt 7, driven wheel 6 is driven to rotate using servo motor 9, so that ball-screw 4 be made to revolve
Turn, ball screw assembly, 3 is caused to move in a straight line.As shown in figure 4, driving the support of bearing 19 by axle sleeve 20, making the first ceramic shaft
Hold 17-1, the second ceramic bearing 17-2 is contacted with the first axle body 16-1, the second axle body 16-2.Pass through the straight line of ball screw assembly, 3
Movement, makes the first ceramic bearing 17-1 in the surface scrolls of the first axle body 16-1；To generate constant rolling friction.Pass through again
The mating reaction of proximity sensor 21 and load cell 12 measures its friction valve.Again because of ball screw assembly, 3 and the first axle body
The distance between plane where 16-1, the second axle body 16-2 calculates the torque value of ball-screw by computer 5 for preset value.
By speed encoder 8 and known lead, using computer 5, according to national standard, the displacement of its ball screw assembly, 3 is calculated.Benefit
The relation value chart between the torque and displacement of tested ball-screw is drawn with computer 5.According to national related regulation, can survey
Corresponding position when out beyond except torque range, the quality of ball-screw is improved in the position of polishing again.Similarly, it inverts
Ball-screw 4 makes the second ceramic bearing 17-2 in the surface scrolls of the second axle body 16-2, measures its reversed value.
As shown in Figures 2 to 4, by the handwheel 25 on rotary table 1, ball screw assembly, 3 and the first axle body can be changed
The distance between plane where 16-1, the second axle body 16-2, to realize the detection of different torque values.
The present apparatus analyzes the mechanism of production of ball-screw moment of friction from the characteristics of ball-screw-transmission.It is based on
Introduction to firmly beforehand means has obtained influence rule of the pretightning force to moment of friction based on Hertz contact theory, after calculating
Rule.By using simplified reverser mechanical model, the moment of friction fluctuation that ball disengaging reverser generates has been carried out point
Analysis.The theoretical direction part of whole system design and verifying is finally constituted.In hardware, the design based on system is wanted
It asks, master-plan first has been done to entire hardware system.Then partite transport autocontrol system, servo-system, data collection system and electricity
Four aspects of gas control system carry out detailed design to system.By to motion control card, servo motor, data collecting card,
The type selecting of electrical component realizes the half-closed loop control, the design of the structure of data collection system and distribution of kinetic control system
The circuit design of system.
The above is only the preferred embodiment of the utility model only, is not intended to limit the protection model of the utility model
It encloses.Any modification, equivalent substitution, improvement and etc. made within the spirit and principle of the present invention, are all contained in this reality
With in novel protection scope.
Claims (4)
1. a kind of ball-screw moment of friction device for dynamically detecting, which is characterized in that installed and measured by screw on workbench (1)
Mechanism (2), the measuring mechanism (2) include shield (11), bracket (15), guide rail (14) and the support of bearing of square structure
(19)；
Shield (11) bottom is equipped with bottom plate (23), top mounting strap cover board (22)；Bottom plate (23) upper surface is flat
Row two vertical plates (13) of setting, described two each self-retaining load cells (12) of vertical plate (13), the load cell (12)
It is inconsistent with bracket (15)；The plate face both ends that the shield (11) is bordering on bracket (15) are respectively equipped with proximity sensor by screw
(21)；
It is connected with guide rail (14) among the bracket (15), cooperation is socketed with the first ceramic bearing (17-1) on the guide rail (14)
With the second ceramic bearing (17-2), first ceramic bearing (17-1) and the second ceramic bearing (17-2) positional symmetry；It is described
It is cased with the first axle body (16-1) in first ceramic bearing (17-1), the top of the first axle body (16-1) is socketed first axle bearing sleeve
(18-1)；It is cased with the second axle body (16-2) in second ceramic bearing (17-2), the top set of the second axle body (16-2)
Meet second bearing set (18-2)；The first axle body (16-1), the second axle body (16-2) are installed on the support of bearing (19)；
The axle sleeve (20) of socket vertical direction setting, the top of the axle sleeve (20) connect ball in the middle part of the support of bearing (19)
Lead screw pair (3), ball screw assembly, (3) cooperation are socketed on ball-screw (4)；One end of the ball-screw (4) is lateral
It is fixed in scroll chuck (26), the scroll chuck (26) is fixedly connected with driven wheel (6), the driven wheel (6) and active
It takes turns and synchronous belt (7) is set between (10)；The driving wheel (10) is fixedly connected with servo motor (9)；The driving wheel (10) with from
Installation speed encoder (8) between driving wheel (6).
2. a kind of ball-screw moment of friction device for dynamically detecting according to claim 1, which is characterized in that the dynamometry
Sensor (12), proximity sensor (21) are electrically connected with computer (5).
3. a kind of ball-screw moment of friction device for dynamically detecting according to claim 1, which is characterized in that the axle sleeve
(20) in the same plane with guide rail (14).
4. a kind of ball-screw moment of friction device for dynamically detecting according to claim 1, which is characterized in that the bearing
Plane is perpendicular to guide rail (14) where bracket (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196210.9U CN209069469U (en) | 2018-12-26 | 2018-12-26 | Ball-screw moment of friction device for dynamically detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822196210.9U CN209069469U (en) | 2018-12-26 | 2018-12-26 | Ball-screw moment of friction device for dynamically detecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209069469U true CN209069469U (en) | 2019-07-05 |
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ID=67102115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822196210.9U Active CN209069469U (en) | 2018-12-26 | 2018-12-26 | Ball-screw moment of friction device for dynamically detecting |
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| Country | Link |
|---|---|
| CN (1) | CN209069469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351658A (en) * | 2020-03-12 | 2020-06-30 | 南京理工大学 | Friction resistance moment detection device for screw reverser |
-
2018
- 2018-12-26 CN CN201822196210.9U patent/CN209069469U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351658A (en) * | 2020-03-12 | 2020-06-30 | 南京理工大学 | Friction resistance moment detection device for screw reverser |
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