CN115045971A - Ball screw - Google Patents
Ball screw Download PDFInfo
- Publication number
- CN115045971A CN115045971A CN202210766200.2A CN202210766200A CN115045971A CN 115045971 A CN115045971 A CN 115045971A CN 202210766200 A CN202210766200 A CN 202210766200A CN 115045971 A CN115045971 A CN 115045971A
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- CN
- China
- Prior art keywords
- ball screw
- ball
- hole
- ball nut
- cleaning
- 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
- 238000004140 cleaning Methods 0.000 claims abstract description 83
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 21
- 230000000694 effects Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- 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
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2418—Screw seals, wipers, scrapers or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to the technical field of mechanical components, in particular to a ball screw, which comprises a ball screw and a ball nut, wherein the top of the ball nut is fixedly connected with a flange, and the ball nut is sleeved on an outer ring of a roller; the inner diameter of the flange is the same as the inner diameter of the ball nut; the first hole is positioned at the upper end of the rolling ball nut, and the lower end of the rolling ball nut is provided with a second hole; the backflow pipe is fixedly connected to the outer surface of the ball nut and communicated with the first hole and the second hole; the steel ball is positioned in a thread groove between the ball nut and the ball screw; the oil seals are positioned on the upper side and the lower side of the ball nut and seal the steel balls; the cleaning device is used for cleaning the ball screw; the ball screw cleaning device is simple in structure, and can clean the ball screw in the working process.
Description
Technical Field
The invention relates to the technical field of mechanical components, in particular to a ball screw.
Background
The screw rod is a mechanical device for transmission and positioning in industrial machinery, and achieves transmission and positioning effects through threaded connection of a nut and the screw rod and sliding friction; the transmission and positioning principle of the ball screw is different from that of a common screw, and the movement of the nut and the screw is converted into linear movement from rotary movement or into rotary movement from linear movement through the circular movement of steel balls arranged in a thread track between the ball screw and a ball nut, so that the ball screw is a screw with a new idea and a new principle.
The circulation mode is as follows:
1. external circulation
After the circulation process is finished, the steel balls enter circulation again through the spiral groove on the outer surface of the nut or the return pipe; the circulating structure and the manufacturing process of the external circulating ball screw are simple, and the use is wide;
2. internal circulation
The ball circulation is realized by adopting the reverser, and the requirements on the size precision of the outer contour of the reverser and the cutting groove on the nut are higher;
current ball screw in the existing market lacks cleaning device, when using, can lead to the reduction of ball nut motion unsmooth, precision and life's reduction because of there is the foreign matter in the ball screw thread track.
In view of the above, the present invention provides a ball screw, which solves the above problems.
Disclosure of Invention
In order to make up the defects of the prior art and solve the problems that when the ball screw is used, the ball nut does not move smoothly, the precision is reduced and the service life is reduced due to the fact that foreign matters exist in the thread track of the ball screw; the invention provides a ball screw.
The technical scheme adopted by the invention for solving the technical problems is as follows: a ball screw, comprising:
the top of the ball nut is fixedly connected with a flange, and the roller nut is sleeved on the outer ring of the roller; the inner diameter of the flange is the same as the inner diameter of the ball nut;
the first hole is formed in the upper end of the ball nut, and the second hole is formed in the lower end of the ball nut;
the backflow pipe is fixedly connected to the outer surface of the ball nut and communicated with the first hole and the second hole;
the steel ball is positioned in a thread groove between the ball nut and the ball screw;
the oil seals are positioned on the upper side and the lower side of the ball nut and used for sealing the steel balls;
preferably, the cleaning device is used for cleaning the ball screw.
Preferably, the cleaning device comprises a first groove, and the first groove is annularly formed in the inner side of the flange and the inner wall of the lower side of the ball nut respectively;
the annular block is in a convex shape, the middle part of the annular block is provided with a hole, and the annular block is in threaded connection with the ball screw; and the annular block is connected in the first groove in a sliding manner.
The end covers are respectively positioned at the lower ends of the flange and the ball nut, are far away from the ball nut, and are in threaded connection with the flange and the ball nut;
preferably, one end of the annular block, which is far away from the first groove, is fixedly connected with an arc-shaped cleaning strip.
Preferably, one end of the cleaning strip, which is far away from the annular block, is an inclined plane, and the inclined plane is inclined towards the outer side.
Preferably, the annular block and the cleaning strip are made of wear-resistant nylon materials.
Preferably, the cleaning device further comprises:
the rotary button is in sliding contact with the ball screw and is in threaded connection with the outer wall of the annular block;
the third hole penetrates through the side face of the annular block;
and the second grooves are respectively arranged at the left side and the right side of the rotary button and are positioned on the same horizontal plane with the rotary button.
Preferably, one end of the button, which is close to the ball screw, is fixedly connected with the cleaning block;
the second groove is an inclined plane, and the inclined plane faces to the vertical downside.
Preferably, one side of the rotary button cleaning block, which is close to the ball screw, is arranged in a spherical manner.
Preferably, the cleaning block is made of wear-resistant rubber.
The invention has the following beneficial effects:
1. the ball screw is provided with the ball screw, a ball nut, a steel ball and a cleaning device; the cleaning device is connected with the ball screw through threads, so that the cleaning device rotates on the ball screw, the cleaning strips are driven to slide and rub in a thread track of the ball screw, and the cleaning effect is achieved;
2. the ball screw is provided with the ball screw, a ball nut, a steel ball and a cleaning device; make the steel ball at ball nut and ball screw thread inslot motion, realize the axial motion of ball nut at ball screw, ball nut when axial motion, drive cleaning device and take place the motion, according to cleaning device and ball screw threaded connection, thereby make cleaning device take place rotary motion at ball screw, make the rotary button on the ball nut be circular motion along ball screw axis, and take place sliding friction with ball screw's screw track, thereby make cleaning device obtain the reinforcing to ball screw's cleaning ability.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a structural view of the embodiment;
FIG. 4 is a cross-sectional view of the embodiment;
FIG. 5 is a structural view of the second embodiment;
FIG. 6 is a view showing a three-structure of the embodiment;
FIG. 7 is a view of a ball nut construction;
in the figure; the device comprises a ball screw 1, a ball nut 2, a flange 21, a first hole 22, a second hole 23, a return pipe 24, a first groove 25, an end cover 26, a steel ball 3, an oil seal 4, a cleaning device 5, an annular block 51, a cleaning strip 52, a third hole 53, a rotary button 54, a second groove 55 and a cleaning block 56.
Detailed description of the preferred embodiments
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-7;
the first embodiment is as follows:
a ball screw comprises a ball screw 1, wherein a thread groove with a semicircular cross section is formed in the outer ring of the ball screw 1; further comprising:
the inner wall of the ball nut 2 is provided with a thread groove with a semicircular cross section; the top of the ball nut 2 is fixedly connected with a flange 21, and the ball nut 2 is sleeved on the outer ring of the ball screw 1; the inner diameter of the flange 21 is the same as the inner diameter of the ball nut 2;
the first hole 22 is positioned at the upper end of the ball nut 2, and the lower end of the ball nut 2 is provided with a second hole 23;
the backflow pipe 24 is fixedly connected to the outer surface of the ball nut 2 and communicated with the first hole 22 and the second hole 23; the backflow pipe 24, the first hole 22, the second hole 23, the thread groove on the inner wall of the ball nut 2 and the thread groove on the outer ring of the ball screw 1 form a circular track which is communicated end to end;
the steel ball 3 is positioned in a thread groove track between the ball nut 2 and the ball screw 1, and the steel ball 3 is used for realizing the parallel motion of the ball nut 2 and the ball screw 1 through rolling;
the oil seals 4 are positioned on the upper side and the lower side of the ball nut 2 and are used for carrying out oil seal on the steel balls 3;
the cleaning device 5 is used for cleaning the ball screw 1;
the cleaning device comprises a first groove 25, wherein the first groove 25 is annularly formed in the inner side of the flange 21 and the inner wall of the lower side of the ball nut 2 respectively;
the annular block 51 is in a convex shape, the middle of the annular block 51 is provided with an opening, and the annular block 51 is in threaded connection with the ball screw 1; and the annular block 51 is connected in the first groove 25 in a sliding way;
the end covers 26 are respectively positioned on the lower ends of the flange 21 and the ball nut 2, and are far away from the ball nut 2;
one end of the annular block 51, which is far away from the first groove 25, is fixedly connected with an arc-shaped cleaning strip 52;
when the cleaning device is used, the ball screw 1 penetrates through the middle of the annular block 51, the annular block 51 is sealed by the end cover 26, the annular block 51 is in threaded connection with the ball screw 1, when the ball nut 2 moves axially along the ball screw 1, the annular block 51 rotates along the ball screw 1 under the action of threads, an arc-shaped cylindrical cleaning strip 52 is fixedly connected to one end of the annular block 51, which is far away from the first groove 25, the cleaning strip 52 is wound on the ball screw 1 and is in close contact with a semicircular thread groove of the ball screw 1, and when the annular block 51 rotates around the ball screw 1, the cleaning strip 52 is driven to slide in the thread groove of the ball screw 1, so that the thread groove of the ball screw 1 is cleaned;
the ball nut 2 further comprises an end cover 26, and the end cover 26 is respectively positioned at the flange 54 and one side of the lower end of the ball nut 2, which is far away from the ball nut 2;
in use, the end cap 26 is threadably connected to the flange 21 and ball nut 2 to facilitate later removal and replacement of the cleaning device 5.
Ball screw manufacturing process is complicated and with high costs, consequently, clearance strip 52 is to ball screw 1's cleanness, avoided in the use, because it causes the corruption and the ball nut 2 of ball screw 1 to adhere to foreign matter on the ball screw 1 screw track, lead to in the use ball nut 2 motion unsmooth and the wearing and tearing of steel ball 3 increase, and then shorten ball screw life's problem, and clearance strip 52 and ball screw 1's in close contact with, make ball nut 2 at the vertical direction during operation, can not produce the gliding phenomenon because of self gravity reason.
One end of the cleaning strip 52, which is far away from the annular block 51, is an inclined plane, and the inclined plane inclines towards the outer side;
the annular block 51 and the cleaning strip 52 are made of wear-resistant nylon materials;
when the cleaning device is used, the annular block 51 drives the cleaning strips 52 to slide in the thread grooves of the ball screw 1 when rotating around the ball screw 1, so that the cleaning strips 52 scrape the thread grooves of the ball screw 1, and the inclined plane at one end of the cleaning strips 52 enables the cleaning strips 52 to clean oily or other solid foreign matters accumulated in the thread grooves of the ball screw 1, thereby achieving the cleaning effect on the ball screw 1;
example two:
the difference between the second embodiment and the first embodiment is that:
the cleaning device further includes:
the third hole 53, wherein the third hole 53 is positioned on the side surface of the annular block;
a rotary button 54, wherein the rotary button 54 is in sliding contact with the ball screw 1, and the rotary button 54 is in threaded connection with the third hole 53;
two second grooves 55 are formed in the side face of the annular block 51, and the second grooves 55 are respectively located on the left side and the right side of the third hole 53;
one end of the rotary button 54 close to the ball screw 1 is fixedly connected with a cleaning block 56;
when the cleaning device is used, a through hole III hole 53 is formed in the outer side of the annular block 51, a groove 55 is formed in the left side and the right side of the hole III hole 53, the rotary button 54 is in threaded connection with the hole III hole 53, the top cleaning block 56 is in close contact with a thread groove of the ball screw 1, and when the cleaning device is in motion, the rotary button 54 slides in the thread groove of the ball screw 1 to drive the annular block 51 to rotate around the ball screw 1, so that the cleaning block 56 is arranged in the cleaning device 5, impurities which are not cleaned by the cleaning strips 52 are further cleaned, and the impurities are discharged out of the annular block 51 from the groove 55;
the second groove 55 is an inclined surface facing the vertical downward side;
the cleaning block 56 at one side of the rotary button 54 close to the ball screw 1 is arranged in a spherical surface manner;
the cleaning block 56 is made of wear-resistant rubber;
when the cleaning device is used, the spherical structure cleaning block 56 at the top end of the rotary button 54 ensures that the cleaning block 56 can be tightly contacted with the thread groove of the ball screw 1 at any angle in the using and maintaining process of the rotary button 54, and the abrasion-resistant rubber material has a good effect of scraping liquid; during the motion, the thread groove on the ball screw 1 is cleared up to the globular cleaning block 56 on the top end of the rotary button 54, and the second groove 55 is inclined, so that the impurities can be guided conveniently, the impurities in the annular block 51 can be discharged quickly, the accumulation in the inner part of the annular block 51 is prevented, and the cleaning capability of the cleaning device 5 on the thread groove of the ball screw 1 is enhanced.
Example three:
embodiment three differs from embodiment one and embodiment two in that in use, the cleaning bar 52 works synchronously with the rotary button 54;
when the cleaning device is used, the ball nut 2 moves axially on the ball screw 1 to drive the cleaning device 5 to rotate around the ball screw 1, the annular block 51 drives the cleaning strips 52 to clean the thread grooves of the ball screw 1 at the outside, the cleaning strips 52 work, and meanwhile, the rotating button 54 is driven by the annular block 51 to be arranged inside the annular block 51 to further clean impurities which are not cleaned by the cleaning strips 52, and the cleaning strips 52 and the rotating button 54 work synchronously, so that the cleaning capability of the cleaning device 5 on the ball screw 1 is enhanced;
the specific working process is as follows:
when the ball screw accurately positions and transmits equipment, the ball nut 2 is sleeved on the ball screw 1, wherein the inner wall of the ball nut 2 and the outer ring of the ball screw 1 are both provided with thread grooves with semicircular sections, the thread groove on the inner side of the ball nut 2 and the thread groove on the surface of the ball screw 1 are superposed to form a circular track, the circular track forms a circular track which is communicated end to end on the inner side and the outer side of the ball nut 2 through a first hole 22, a second hole 23 and a return pipe 24, the steel balls 3 are uniformly arranged in the circular track, and the steel balls 3 do circular motion in the track during motion; the lubricating oil of the steel balls 3 in the circular circulating track is sealed through an oil seal 4; when the ball nut 2 moves up and down on the outer wall of the ball screw 1, the steel balls 3 in the circular track roll, so that the nut 2 can move up and down without rotating, and the requirement of converting the rotating motion into linear motion is met; the upper side of a flange 21 of the ball nut 2 and the lower side of the ball nut 2 are respectively provided with an annular first groove 25, an annular block 51 with a hole in the middle is connected in the first groove 25 in a sliding mode, the ball screw 1 penetrates through the middle of the annular block 51, an end cover 26 seals the annular block 51, the annular block 51 is in threaded connection with the ball screw 1, when the ball nut 2 moves axially along the ball screw 1, the annular block 51 rotates along the ball screw 1 through threads, an arc-shaped cylindrical cleaning strip 52 is fixedly connected to one end, far away from the first groove 25, of the annular block 51, the cleaning strip 52 is wound on the ball screw 1 and is in tight contact with a semicircular thread groove of the ball screw 1, and when the annular block 51 rotates around the ball screw 1, the cleaning strip 52 is driven to slide in the thread groove of the ball screw 1;
front, back, left, right, up and down are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as front, the left side of the observer is defined as left, and the like.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Claims (10)
1. A ball screw comprising a ball screw (1), further comprising:
the top of the ball nut (2) is fixedly connected with a flange (21), and the ball nut is sleeved on the outer ring of the ball screw (1); the inner diameter of the flange (21) is the same as the inner diameter of the ball nut (2);
the first hole (22) is positioned at the upper end of the ball nut (2), and a second hole (23) is formed in the lower end of the ball nut (2);
the backflow pipe (24) is fixedly connected to the outer surface of the ball nut (2) and communicated with the first hole (22) and the second hole (23);
the steel ball (3), the said steel ball (3) locates in the thread groove between ball nut (2) and ball screw (1);
the oil seals (4) are positioned on the upper side and the lower side of the ball nut (2) and seal the steel balls (3);
the method is characterized in that:
the cleaning device (5) is used for cleaning the ball screw (1).
2. A ball screw according to claim 1, wherein: the cleaning device (5) comprises:
the first groove (25), the first groove (25) is respectively and annularly formed in the inner side of the flange (21) and the inner wall of the lower side of the ball nut (2);
the ball screw is characterized by comprising an annular block (51), wherein the annular block (51) is in a convex shape, the middle part of the annular block (51) is provided with a hole, and the annular block is in threaded connection with the ball screw (1); the annular block (51) is connected in the first groove (25) in a sliding way;
and the end covers (26), and the end covers (26) are respectively positioned on one sides, far away from the ball nut (2), of the lower ends of the flange (21) and the ball nut (2).
3. A ball screw according to claim 2, wherein: and one end of the annular block (51) far away from the first groove (25) is fixedly connected with an arc-shaped cleaning strip (52).
4. A ball screw according to claim 3, wherein: one end, far away from the annular block (51), of the cleaning strip (52) is arranged in a slope mode, and the slope faces outwards in a slope mode.
5. A ball screw according to claim 4, wherein: the annular block (51) and the cleaning strip (52) are made of wear-resistant nylon materials.
6. A ball screw according to claim 1, wherein: the cleaning device (5) further comprises:
the third hole (53), the third hole (53) runs through the side surface of the annular block (51);
and the rotating button (54) is in sliding contact with the ball screw (1), and is in threaded connection with the third hole (53).
7. A ball screw according to claim 6, wherein: two second grooves (55) are formed in the side face of the annular block (51), and the second grooves (55) are located on the left side and the right side of the third hole (53) respectively.
8. A ball screw according to claim 6, wherein: one end of the rotary button (54) close to the ball screw (1) is fixedly connected with a cleaning block (56); and the second groove (55) is arranged as an inclined plane facing to the vertical downside.
9. A ball screw according to claim 7, wherein: the cleaning block (56) is arranged in a spherical surface mode.
10. A ball screw according to claim 8, wherein: the cleaning block (56) is made of wear-resistant rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210766200.2A CN115045971A (en) | 2022-06-30 | 2022-06-30 | Ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210766200.2A CN115045971A (en) | 2022-06-30 | 2022-06-30 | Ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115045971A true CN115045971A (en) | 2022-09-13 |
Family
ID=83166302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210766200.2A Pending CN115045971A (en) | 2022-06-30 | 2022-06-30 | Ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115045971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953206A (en) * | 2023-08-02 | 2023-10-27 | 吉林大学 | Device and method for testing storage reliability of lubricating grease for simulated rolling mechanism |
| CN117380596A (en) * | 2023-12-07 | 2024-01-12 | 陕西东胜机械制造有限公司 | Surface cleaning and dirt-removing device for numerical control machine tool |
-
2022
- 2022-06-30 CN CN202210766200.2A patent/CN115045971A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953206A (en) * | 2023-08-02 | 2023-10-27 | 吉林大学 | Device and method for testing storage reliability of lubricating grease for simulated rolling mechanism |
| CN116953206B (en) * | 2023-08-02 | 2024-05-24 | 吉林大学 | Device and method for testing storage reliability of lubricating grease for simulated rolling mechanism |
| CN117380596A (en) * | 2023-12-07 | 2024-01-12 | 陕西东胜机械制造有限公司 | Surface cleaning and dirt-removing device for numerical control machine tool |
| CN117380596B (en) * | 2023-12-07 | 2024-03-08 | 陕西东胜机械制造有限公司 | Surface cleaning and dirt-removing device for numerical control machine tool |
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