CN103851078A - Movement body of rolling ball movement module, and processing method thereof - Google Patents
Movement body of rolling ball movement module, and processing method thereof Download PDFInfo
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- CN103851078A CN103851078A CN201210495089.4A CN201210495089A CN103851078A CN 103851078 A CN103851078 A CN 103851078A CN 201210495089 A CN201210495089 A CN 201210495089A CN 103851078 A CN103851078 A CN 103851078A
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- ball
- guide portion
- reflux assembly
- moving module
- motion body
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Abstract
The invention relates to a movement body of a rolling ball movement module. The movement body comprises at least a rolling ball ditch groove, wherein the rolling ball ditch groove is connected with a reflux assembly, the position for adjacently connected with the reflux assembly is provided with a guide portion formed by processing in a computer numerical control manner, the length of the guide portion is less than or equal to 2 times diameter of the rolling ball, and the depth of the guide portion is less than or equal to 0.2 time diameter of the rolling ball. According to the present invention, with the rolling ball ditch groove design of the movement body, the rolling ball can maintain the movement in the rolling ball ditch groove, such that damage on the reflux assembly due to the deviation problem can not be generated so as to improve the smoothness and the stability of the operation of the rolling ball movement module.
Description
Technical field
The present invention is about a kind of ball moving module, especially in regard to a kind of motion body of ball moving module.
Background technique
Ball moving module is slidedly arranged on track body by motion body or screw rod is formed, and makes motion body continue to advance on track body or screw rod for seeing through a limited number of ball, is generally that the mode by ball reflux assembly is set is reached.Utilize ball reflux assembly, make ball can be between motion body and track body or screw rod shuttling movement, with its function that continues.
Common ball moving module has ball Linear Moving Module and ball screw, and wherein, the motion body of ball Linear Moving Module is slide body, is slidedly arranged on linear slide rail; The motion body of ball screw is ball nut, is slidedly arranged on screw rod.
But, no matter the ball moving module of which kind of type is all often in lower operation at a high speed, or its motion body is often undertaken the work of other weight of carrying, therefore, under the situation of gravity accleration or high capacity, ball is in the time that disengaging motion body will enter reflux assembly, often can there is ball shift phenomenon, depart from the situation of ball groove originally, and that this situation can cause reflux assembly is extra stressed, adding reflux assembly normally makes with plastics, own rigidity own is not high, therefore often there is the situation that reflux assembly is damaged to occur, not only have a strong impact on stability and the working life of the running of ball moving module whole, also limit the operational efficiency of ball moving module.
Therefore, how a kind of motion body of ball moving module is provided, can makes ball in the time of high-speed circulating motion or high capacity, can not cause damage to reflux assembly because of skew problem, smooth degree and the stability of ball moving module whole are improved, have become important topic.
Summary of the invention
Object of the present invention is for providing a kind of motion body and processing method thereof of ball moving module, by the ball trench design of motion body, ball is held in ball groove to move, can not damage because of skew problem reflux assembly, to improve smooth degree and the stability of the running of ball moving module.
The motion body of a kind of ball moving module of the present invention, there is at least one ball groove, ball groove is connected with a reflux assembly, and there is the guide portion being processed to form in computer numerical control mode in abutting connection with reflux assembly place, the length of guide portion is less than or equal to 2 times of diameter of ball, and the degree of depth of guide portion is less than or equal to 0.2 times of diameter of ball.
The present invention also discloses a kind of processing method of motion body of ball moving module, comprises the following steps: a motion body is provided, and motion body comprises at least one ball groove, is connected with a reflux assembly; And in ball groove in abutting connection with reflux assembly place, be processed to form a guide portion in computer numerical control mode, and the length of guide portion is less than or equal to 2 times of diameter of ball, and the degree of depth of guide portion is less than or equal to 0.2 times of diameter of ball.
In one embodiment of this invention, guide portion is guiding oblique angle.
In one embodiment of this invention, motion body is a slide body, and ball moving module is ball Linear Moving Module.
In one embodiment of this invention, motion body is a ball nut body, and ball moving module is ball screw.
In one embodiment of this invention, guide portion is half tubaeform.
From the above, according to motion body and the processing method thereof of a kind of ball moving module of the present invention, its ball groove and reflux assembly connection, there is the guide portion of specific dimensions.Because known ball moving module is in high-speed motion or motion body in high capacity in the situation that, the position that ball joins by ball groove and reflux assembly, ball often can, because offset problem impacts the reflux assembly of plastics, cause reflux assembly damage; The present invention sees through the guide portion design of specific dimensions, and guidance function can be provided, and ball is directed to reflux assembly smoothly, but not directly clamp-ons reflux assembly, reduces reflux assembly and produces the problem of damage because of the direct impact of ball.In addition, the design of guide portion also provides a buffer space coordinating with ball, effectively alleviates the problems referred to above.
Again, the guide portion of motion body of the present invention forms with computer numerical control mode machining, can make the size of guide portion be consistent, and avoids personal error, more because of precision machining, and is not limited to the unfavorable factor that the positions such as such as ball nut inside are difficult for processing.
Accompanying drawing explanation
Fig. 1 is the combination schematic diagram according to a kind of ball Linear Moving Module of first embodiment of the invention;
Fig. 2 is the decomposing schematic representation of the ball Linear Moving Module shown in Fig. 1;
Fig. 3 A is the schematic diagram of another angle of a kind of slide body shown in Fig. 2;
Fig. 3 B is the part enlarged view of the slide body shown in Fig. 3 A;
Fig. 4 A is the front view of the slide body shown in Fig. 3 A;
Fig. 4 B is the part enlarged view of Fig. 4 A;
Fig. 5 is the decomposing schematic representation according to a kind of ball screw of second embodiment of the invention;
Fig. 6 is another angle schematic diagram of the nut body shown in Fig. 5;
Fig. 7 is the schematic diagram of the aspect of the another kind of nut body in second embodiment of the invention;
Fig. 8 is the decomposing schematic representation according to a kind of Miniature ball screw rod of third embodiment of the invention; And
Fig. 9 is the combined amplifier schematic diagram of the nut shown in Fig. 8 and reflux assembly.
Primary component symbol description:
1: slide
11: slide body
111,411,411a, 411b: ball groove
112: outer ball channel
113,412a: end face
114: recess
115,413,413a, 413b: guide portion
12,42,42b: reflux assembly
121: protuberance
122: extension part
13: end cap
131: ball holder
2: linear slide rail
21: rail slot
3,6,6b: ball
4,4b: nut
41,41a, 41b: nut body
412: circulation port
412b: groove
5,5b: screw rod
51,51b: thread groove
D: the degree of depth
L: length
M: ball Linear Moving Module
MS: Miniature ball screw rod
S: ball screw
Embodiment
Hereinafter with reference to relevant drawings, motion body and processing method thereof according to a kind of ball moving module of the preferred embodiment of the present invention are described, wherein identical element will be illustrated with identical component symbol.
Generally speaking, ball moving module can refer to any device that movement effects is provided through ball-recirculation rolling, it includes ball Linear Moving Module and ball screw, and the preferred embodiment of the present invention is with the motion body explanation of described two kinds of ball moving modules, but actual range is not limited to this.
In first embodiment of the invention, ball moving module is ball Linear Moving Module, and motion body is slide body.Fig. 1 is the combination schematic diagram according to a kind of ball Linear Moving Module of first embodiment of the invention; Fig. 2 is the decomposing schematic representation of the ball Linear Moving Module shown in Fig. 1, shown in Fig. 1 and Fig. 2.In the present embodiment, ball Linear Moving Module M includes a slide 1, linear slide rail 2 and multiple ball 3.Linear slide rail 2 both sides are respectively arranged with two rail slots 21, and slide 1 is slidedly arranged on linear slide rail 2.
Thin portion, slide 1 comprises a slide body 11, four reflux assemblies 12 and two end caps 13.The inner side of slide body 11 has four ball grooves 111 corresponding to the rail slot 21 of linear slide rail 2, and ball channel in a rail slot 21 and common a formation of ball groove 111, and the other correspondence of slide body 11 is provided with four outer ball channels 112.Certainly, be noted that the number of rail slot 21, ball groove 111 and outer ball channel 112 corresponds to each other, but be not restricted to above-mentioned number, and can change according to demand difference.
Please refer to shown in Fig. 2, reflux assembly 12 correspondences are arranged at slide body 11 and connect ball groove 111 and outer ball channel 112.The quantity of the reflux assembly 12 of the present embodiment is four, and has protuberance 121 and extension part 122; In addition, each ball groove 111 has a recess 114 near end face 113, protuberance 121 setting corresponding to recess 114 of reflux assembly 12.When reflux assembly 12 and slide body 11 in conjunction with time, corresponding with recess 114 group of protuberance 121 connects, extension part 122 correspondence is placed in outer ball channel 112.
Fig. 3 A is the schematic diagram of another angle of the slide body shown in Fig. 2, please refer to shown in Fig. 3 A.The ball groove 111 of slide body 11, by the position being connected with reflux assembly 12, has the guide portion 115 being processed to form in computer numerical control (Computer Numerical Control, CNC) mode in abutting connection with reflux assembly 12 places.Or can say, ball groove 111 has guide portion 115 in the position near recess 114.In practical application, can in computer numerical control toolroom machine, input grinding size, then process to form guide portion 115 through toolroom machine.For example, the length L that can set guide portion 115 is less than or equal to 2 times of diameter of ball 3, and depth D (indicating with reference to figure 4B) is less than or equal to 0.2 times of diameter of ball 3.Guide portion 115 in ball groove 111 near recess 114 place's abrasive machining, can form the guiding oblique angle of expanding a little compared with ball groove 111 both sides, more specifically describes, and guide portion 115 can form expand outwardly half tubaeform.Form guide portion 115 with computer numerically controlled mode abrasive machining, can make the size of guide portion 115 be consistent, avoiding people is the error while applying.
Fig. 3 B is the part enlarged view of the slide body shown in Fig. 3 A; Fig. 4 A is the front view of the slide body shown in Fig. 3 A; Fig. 4 B is the part enlarged view of Fig. 4 A, please also refer to shown in Fig. 3 A to Fig. 4 B.The length L of guide portion 115 refers to that initial position that ball groove 111 starts to expand is laterally to the distance of recess 114 (can with reference to figure 3A); Depth D represents that guide portion 115 is compared to the outward extending degree of ball groove 111 (Fig. 4 B).Wherein, the length of guide portion 115 is less than or equal to 2 times of diameter of ball 3, and the degree of depth of guide portion 115 is less than or equal to 0.2 times of diameter of ball 3.
Generally speaking, reflux assembly 12 is plastic material, and slide body 11 and ball 3 are all the metal material that rigidity is stronger, therefore ball Linear Moving Module M is under high-speed motion or high capacity, when the ball 3 of metal will enter reflux assembly 12 by ball groove 111, often can be because offset problem impacts the reflux assembly 12 of plastics, and before being about to enter reflux assembly 2, ball groove 111 ends are processed to form the design that guide portion 115 expands outwardly, the buffer path of skew slightly can be provided, and guide ball 3 the smooth reflux assembly 12 that moves into, but not directly impact reflux assembly 12, reduce reflux assembly 12 and cause the situation of damage because of the direct impact of ball 3.
In second embodiment of the invention, ball moving module is ball screw, and motion body is nut body.Fig. 5 is according to the decomposing schematic representation of a kind of ball screw of second embodiment of the invention, please refer to shown in Fig. 5.Ball screw S comprises a nut 4, screw rod 5 and the shuttling movement ball 6 between described assembly.Screw rod 5 has a thread groove 51, and nut 4 is sheathed and be slidedly arranged on screw rod 5.Nut 4 also comprises nut body 41 and reflux assembly 42.Nut body 41 has the ball groove 411 corresponding with thread groove 51, and two circulation ports 412, is connected with reflux assembly 42 through thread groove 51, ball groove 411, circulation port 412, jointly forms complete peripheral passage, for ball 6 continuous circulations motions.
Fig. 6 is another angle schematic diagram of the nut body shown in Fig. 5, please refer to shown in Fig. 6.The ball groove 411 of nut body 41 is connected with reflux assembly 42 in close circulation port 412 places, and sentences computer numerical control mode in ball groove 411 in abutting connection with reflux assembly 42, the guide portion 413 being processed to form.
Same, can in computer numerical control toolroom machine, input grinding size, then process to form guide portion 413 through toolroom machine.For example, the length L that can set guide portion 413 is less than or equal to 2 times of diameter of ball 6, and the degree of depth is less than or equal to 0.2 times of diameter of ball 6.
In implementation, owing to utilizing computer numerically controlled processing method, therefore stability is high, working space demand is low, can be by the inner side of nut body 41, the side connecing with 5 groups of screw rods, starts to carry out abrasive machining to ball groove 411 near circulation port 412 places, thereby on ball groove 411, forms half flaring guiding oblique angle of expansion a little laterally.
The length of guide portion 413 refers to initial position that ball groove 411 starts to expand the laterally distance to circulation port 412; And the degree of depth of guide portion 413 is similarly the distance of expanding laterally compared to ball groove 411.Same, with computer numerically controlled mode abrasive machining, can make the size of guide portion 413 more consistent, reduce underhand polish not easy to operate, and easily cause the problem of error.As for other size, the shape facility of guide portion 413, can be with reference to previous embodiment, both are roughly the same, repeat no more in this.
Separately it should be noted that, nut body 41 has two circulation ports 412, and the quantity of reflux assembly 42 is two, and ball groove 411 has two places to be connected with reflux assembly 42, thus there are two guide portions 413, but because of visual angle relation, Fig. 6 only shows one of them.
The reflux assembly 42 of nut 4 is similarly plastic material, and nut body 41 and ball 6 are all the metal material that rigidity is stronger, and therefore, reflux assembly 42 has equally and is subject to ball 6 at a high speed or the impact that under high capacity, shuttling movement produces, and then causes the situation of damage.But, the design that guide portion 413 expands outwardly, the function that can provide equally buffering to be offset, slows down the impaired situation of reflux assembly 42.
In other embodiment, as shown in Figure 7, Fig. 7 is the schematic diagram of the aspect of the another kind of nut body in second embodiment of the invention.The ball groove 411a of nut body 41a and reflux assembly connecting part are near the end face 412a of nut body 41a, and this is also the position that is processed to form of guide portion 413a.As for other size, the shape facility of guide portion 413a, roughly the same with previous embodiment, repeat no more in this.
In third embodiment of the invention, its ball moving module is Miniature ball screw rod, and motion body is nut body.Fig. 8 is according to the decomposing schematic representation of a kind of Miniature ball screw rod of third embodiment of the invention, please refer to shown in Fig. 8.The overall structure of Miniature ball screw rod MS is roughly identical with ball screw S, but the nut body 41b of Miniature ball screw rod MS does not have circulation port, but there is groove 412b, reflux assembly 42b is arranged at the groove 412b of nut body 41b vertically, and reflux assembly 42b forms circulating path corresponding to ball groove 411b, moves for ball 6b continuous circulation.
Fig. 9 is the combined amplifier schematic diagram of the nut shown in Fig. 8 and reflux assembly, please refer to shown in Fig. 9.In Fig. 9, ball groove 411b and reflux assembly 42b connecting part on ball groove 411b, have in computer numerical control mode and be processed to form, and compared with ball groove 411b half flaring guide portion 413b of expansion a little laterally, can be considered guiding oblique angle.Same, the length L of guide portion 413b is less than or equal to 2 times of diameter of ball 6b; And the degree of depth of guide portion 413b is less than or equal to 0.2 times of diameter of ball 6b, the design of guide portion 413b can slow down the damage of reflux assembly 42b.As for other size, the shape facility of guide portion 413b, roughly the same with previous embodiment, repeat no more in this.
In enforcement, the present invention can be applicable to various slide rail set or screw rod group, especially V-type, S type and miniature screw rod group, but and be not suitable for ball spline.
The present invention separately provides a kind of processing method of motion body of ball moving module, comprises the following steps: a motion body is provided, and motion body comprises respectively at least one ball groove, is connected with a reflux assembly; And in ball groove in abutting connection with reflux assembly place, be processed to form a guide portion in computer numerical control mode, and the length of guide portion is less than or equal to 2 times of diameter of ball, and the degree of depth of guide portion is less than or equal to 0.2 times of diameter of ball.Motion body can be slide body or nut body, and it has assembly composition and the feature identical with aforementioned slide body or nut body, can, with reference to aforementioned, repeat no more in this.
In sum, according to the motion body of a kind of ball moving module of the present invention, its ball groove and reflux assembly connection, there is the guide portion of specific dimensions.Because known ball moving module is in high-speed motion or motion body in high capacity in the situation that, the position that ball joins by ball groove and reflux assembly, ball often can, because offset problem impacts the reflux assembly of plastics, cause reflux assembly to be damaged; And the present invention sees through the guide portion design of specific dimensions, guidance function can be provided, ball is directed to reflux assembly smoothly, but not directly clamp-ons reflux assembly, reduce reflux assembly and produce the problem of damage because of the direct impact of ball.In addition, the design of guide portion also provides a buffer space coordinating with ball, effectively alleviates the problems referred to above.
Again, the guide portion of motion body of the present invention forms with computer numerical control mode machining, can make the size of guide portion be consistent, and avoids personal error, more because of precision machining, and is not limited to the unfavorable factor that the positions such as such as ball nut inside are difficult for processing.
The above is only illustrative, and non-limiting.Anyly do not depart from spirit of the present invention and category, and equivalent modifications or change that it is carried out all should be included in claim limited range.
Claims (10)
1. the motion body of a ball moving module, it is characterized in that, there is at least one ball groove, described ball groove is connected with a reflux assembly, and there is in abutting connection with described reflux assembly place the guide portion being processed to form in computer numerical control mode, the length of described guide portion is less than or equal to 2 times of diameter of ball, and the degree of depth of described guide portion is less than or equal to 0.2 times of diameter of ball.
2. motion body according to claim 1, is characterized in that, described guide portion is guiding oblique angle.
3. motion body according to claim 1, is characterized in that, described motion body is a slide body, and described ball moving module is ball Linear Moving Module.
4. motion body according to claim 1, is characterized in that, described motion body is a ball nut body, and described ball moving module is ball screw.
5. motion body according to claim 1, is characterized in that, described guide portion is half tubaeform.
6. a processing method for the motion body of ball moving module, is characterized in that, comprises the following steps:
One motion body is provided, and described motion body comprises at least one ball groove, is connected with a reflux assembly; And
In described ball groove in abutting connection with described reflux assembly place, be processed to form a guide portion in computer numerical control mode, the length of described guide portion is less than or equal to 2 times of diameter of ball, and the degree of depth of described guide portion is less than or equal to 0.2 times of diameter of ball.
7. processing method according to claim 6, is characterized in that, described guide portion is guiding oblique angle.
8. processing method according to claim 6, is characterized in that, described motion body is a slide body, and described ball moving module is ball Linear Moving Module.
9. processing method according to claim 6, is characterized in that, described motion body is a ball nut body, and described ball moving module is ball screw.
10. processing method according to claim 6, is characterized in that, described guide portion is half tubaeform.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495089.4A CN103851078B (en) | 2012-11-28 | 2012-11-28 | The motion body of ball moving module and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495089.4A CN103851078B (en) | 2012-11-28 | 2012-11-28 | The motion body of ball moving module and processing method thereof |
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| CN103851078A true CN103851078A (en) | 2014-06-11 |
| CN103851078B CN103851078B (en) | 2016-06-22 |
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| CN201210495089.4A Active CN103851078B (en) | 2012-11-28 | 2012-11-28 | The motion body of ball moving module and processing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565032A (en) * | 2014-12-31 | 2015-04-29 | 浙江丽水新亿特自动化技术有限公司 | Linear sliding block, processing technology for processing ball grooves of sliding block, and grinding machine of processing technology |
| JP2022003273A (en) * | 2016-10-26 | 2022-01-11 | 日本トムソン株式会社 | Liner motion guide unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0235051Y2 (en) * | 1985-02-14 | 1990-09-21 | ||
| JP2003322150A (en) * | 2002-02-28 | 2003-11-14 | Nsk Ltd | Linear motion guiding device |
| US20050157962A1 (en) * | 2003-12-02 | 2005-07-21 | Nsk Ltd. | Linear guide apparatus |
| CN1651185A (en) * | 2000-11-17 | 2005-08-10 | Thk株式会社 | Guide device |
| CN201696485U (en) * | 2010-04-12 | 2011-01-05 | 鼎金传动科技股份有限公司 | Minitype linear motion module |
-
2012
- 2012-11-28 CN CN201210495089.4A patent/CN103851078B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0235051Y2 (en) * | 1985-02-14 | 1990-09-21 | ||
| CN1651185A (en) * | 2000-11-17 | 2005-08-10 | Thk株式会社 | Guide device |
| JP2003322150A (en) * | 2002-02-28 | 2003-11-14 | Nsk Ltd | Linear motion guiding device |
| US20050157962A1 (en) * | 2003-12-02 | 2005-07-21 | Nsk Ltd. | Linear guide apparatus |
| CN201696485U (en) * | 2010-04-12 | 2011-01-05 | 鼎金传动科技股份有限公司 | Minitype linear motion module |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565032A (en) * | 2014-12-31 | 2015-04-29 | 浙江丽水新亿特自动化技术有限公司 | Linear sliding block, processing technology for processing ball grooves of sliding block, and grinding machine of processing technology |
| CN104565032B (en) * | 2014-12-31 | 2017-06-23 | 丽水市吴越机械制造有限公司 | Linear slider, the processing technology of machining of slide block ball grooves and its grinding machine |
| JP2022003273A (en) * | 2016-10-26 | 2022-01-11 | 日本トムソン株式会社 | Liner motion guide unit |
| JP7194794B2 (en) | 2016-10-26 | 2022-12-22 | 日本トムソン株式会社 | Linear guide unit |
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| Publication number | Publication date |
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| CN103851078B (en) | 2016-06-22 |
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