CN113062922A - Precision ball bend guide rail - Google Patents
Precision ball bend guide rail Download PDFInfo
- Publication number
- CN113062922A CN113062922A CN202110173953.8A CN202110173953A CN113062922A CN 113062922 A CN113062922 A CN 113062922A CN 202110173953 A CN202110173953 A CN 202110173953A CN 113062922 A CN113062922 A CN 113062922A
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- China
- Prior art keywords
- ball
- outer arc
- roller
- rolling groove
- connecting shaft
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/005—Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/043—Ball or roller bearings with two massive rectangular rails having facing grooves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2235/00—Cleaning
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention discloses a precise ball curve guide rail, wherein two rail bodies are respectively provided with an upper rolling groove, a roller containing cavity and a lower rolling groove, and are also provided with a ball mechanism consisting of a connecting shaft and two rollers provided with balls, and the balls arranged in a ring shape in the rollers are respectively in precise rolling fit with the upper rolling groove and the lower rolling groove of the rail bodies, so that: when the load drives the ball mechanism to move along the extending direction of the two rail bodies, each ball of the roller wheel is in circular turnover motion, the motion form can freely turn along any curve, namely the extending curves of the two rail bodies can be designed into any curve, the ball mechanism can be ensured to easily turn, the motion precision is kept unchanged, and the rolling matching of the balls ensures that the transmission efficiency is very high.
Description
Technical Field
The invention relates to a curve guide rail, in particular to a precise ball curve guide rail.
Background
At present, precision guide rails widely applied by automation technology are all linear guide rails, and the linear guide rails achieve rolling friction motion by utilizing balls and rails to precisely cooperate to do reciprocating motion. However, the guide rail with the structure can not realize the precise movement of the curve. The linear motion of light cannot meet the requirements of various tracks in the mechanical industry. In particular, profiling requires that the tool move precisely in accordance with a specific curve. There are of course many other aspects that require the presence of a precision curved track.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a precision ball track is provided.
The technical scheme adopted by the invention is as follows:
a precise ball curve guide rail comprises two rail bodies which are parallel to each other and extend along a curve;
the method is characterized in that:
the opposite inner side surfaces of the two rail bodies are provided with rail grooves extending along the curve, and the rail grooves consist of an upper rolling groove, a roller containing cavity and a lower rolling groove which are sequentially communicated from top to bottom;
the precise ball curve guide rail also comprises a ball mechanism, and the ball mechanism is provided with a connecting shaft and two rollers; the connecting shaft is connected between the two rollers, the rollers are provided with an upper notch, an annular rolling groove and a lower notch which are sequentially communicated from top to bottom, and a plurality of balls in rolling fit with the annular rolling groove are arranged in the annular rolling groove; the two rollers are respectively positioned in the roller containing cavities of the two rail bodies, so that: the ball exposed from the upper notch is in rolling fit with the upper rolling groove of the corresponding rail body, and the ball exposed from the lower notch is in rolling fit with the lower rolling groove of the corresponding rail body;
and the load of the precise ball curve guide rail is arranged on the connecting shaft.
Therefore, because the balls which are arranged in a ring shape in the roller are respectively matched with the upper rolling groove and the lower rolling groove of the rail body in a precise rolling way, the roller has the advantages that: when the load drives the ball mechanism to move along the extending direction of the two rail bodies, each ball of the roller wheel is in circular turnover motion, the motion form can freely turn along any curve, namely the extending curves of the two rail bodies can be designed into any curve, the ball mechanism can be ensured to easily turn, the motion precision is kept unchanged, and the rolling matching of the balls ensures that the transmission efficiency is very high.
In addition, the invention has the advantages of low processing difficulty, simple and reliable structure and low failure rate.
Preferably: the precise ball curve guide rail is provided with at least two sets of ball mechanisms, and the load is simultaneously arranged on the connecting shafts of the ball mechanisms so as to ensure the balance of the load.
And when the load of the load is large, the invention can balance the load by adding the number of the ball mechanisms so as to ensure that the balls cannot generate plastic deformation under compressive stress.
Preferably: the connecting shaft may be fixedly connected with the roller.
Preferably: the connecting shaft can also be rotatably connected with the roller to increase the freedom of movement, so that the connecting shaft can generate certain deflection, and the precise ball curve guide rail is more reliable in work and less prone to being blocked.
Preferably: when the connecting shaft is rotatably connected with the roller, the axis of the connecting shaft is coaxial with the annular rolling groove of the roller.
Preferably: any two adjacent rollers in the annular rolling grooves of the rollers are in contact.
Preferably: the upper notch and the lower notch are smaller than two balls and pass through the required size at the same time, so that the balls are prevented from being separated from the annular rolling groove through the upper notch or the lower notch.
Preferably: felt sheets are fixed on the top surface and the bottom surface of the roller, and the felt sheets are in contact with the roller containing cavity of the rail body. Therefore, on one hand, the felt sheet can be used for preventing the roller from rubbing the rail body, on the other hand, the felt sheet can be used for brushing dust on the roller containing cavity, and the smooth movement of the ball mechanism is ensured.
As a preferred embodiment of the present invention: the roller consists of an inner ring part, a front outer arc part and a rear outer arc part, and the front outer arc part and the rear outer arc part are respectively fixedly connected with the inner ring part through connecting parts; the outer circumferential surface of the inner ring portion is provided with a circular groove, the inner arc surfaces of the front outer arc portion and the rear outer arc portion are provided with arc grooves, the circular groove of the inner ring portion, the arc groove of the front outer arc portion and the arc groove of the rear outer arc portion enclose the annular rolling groove, the upper notch is formed between the upper portion of the front outer arc portion and the upper portion of the rear outer arc portion, and the lower notch is formed between the lower portion of the front outer arc portion and the lower portion of the rear outer arc portion. The roller has the advantages of simple and compact structure and easy production and manufacture.
As a preferred embodiment of the present invention: the load is installed on the connecting shaft through the rolling bearing, so that the load can move along the extension direction of curves of the two rail bodies, and meanwhile, the load can rotate through the rolling bearing, and the device has important significance for special complex compound motion.
Preferably, two rolling bearings are mounted on each connecting shaft, and the load is fixedly connected with outer rings of the rolling bearings.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the two rail bodies of the invention are respectively provided with an upper rolling groove, a roller holding cavity and a lower rolling groove, and are also provided with a ball mechanism consisting of a connecting shaft and two rollers provided with balls, and the balls arranged in the rollers in a ring shape are respectively in precise rolling fit with the upper rolling groove and the lower rolling groove of the rail bodies, so that: when the load drives the ball mechanism to move along the extending direction of the two rail bodies, each ball of the roller wheel is in circular turnover motion, the motion form can freely turn along any curve, namely the extending curves of the two rail bodies can be designed into any curve, the ball mechanism can be ensured to easily turn, the motion precision is kept unchanged, and the rolling matching of the balls ensures that the transmission efficiency is very high.
Secondly, the invention has low processing difficulty, simple and reliable structure and low failure rate.
Thirdly, the load bearing capacity of the invention can be improved by adding the number of the ball mechanisms, and the invention has the advantage of strong load bearing capacity.
Fourthly, the roller consists of the inner ring part, the front outer arc part and the rear outer arc part, and has the advantages of simple and compact structure and easiness in production and manufacture.
Drawings
The invention is described in further detail below with reference to the following figures and specific examples:
FIG. 1 is a schematic view of the precise ball curve track of the present invention in a configuration when loaded;
FIG. 2 is a schematic view of the precise ball track bend of the present invention with one of the rail bodies hidden;
FIG. 3 is a schematic longitudinal cross-sectional structural view of a precision ball track bend of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a cross sectional structural schematic view of a precision ball ramp track of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments and the accompanying drawings to help those skilled in the art to better understand the inventive concept of the present invention, but the scope of the claims of the present invention is not limited to the following embodiments, and all other embodiments obtained without inventive efforts by those skilled in the art will fall within the scope of the present invention without departing from the inventive concept of the present invention.
In the description of the present invention, it is to be understood that the terms "upper, lower, front, and rear" are used merely for convenience of description and to simplify the description, and are not intended to limit the invention by indicating or implying any particular orientation required by the present invention.
Example one
As shown in fig. 1 to 5, the present invention discloses a precision ball curved guide rail, which comprises two rail bodies 1 parallel to each other and extending along a curve;
the opposite inner side surfaces 1a of the two rail bodies 1 are provided with rail grooves 1b extending along the curve, and the rail grooves 1b are composed of an upper rolling groove 1b1, a roller containing cavity 1b2 and a lower rolling groove 1b3 which are sequentially communicated from top to bottom;
the precise ball curve guide rail also comprises a ball mechanism, and the ball mechanism is provided with a connecting shaft 2 and two rollers 3; the connecting shaft 2 is connected between the two idler wheels 3, the idler wheels 3 are provided with an upper notch 3a, an annular rolling groove 3b and a lower notch 3c which are sequentially communicated from top to bottom, and a plurality of balls 4 which are in rolling fit with the annular rolling groove 3b are arranged in the annular rolling groove 3 b; the two rollers 3 are respectively located in the roller cavities 1b2 of the two rail bodies 1, so that: the ball 4 exposed from the upper notch 3a is in rolling fit with the upper rolling groove 1b1 of the corresponding rail body 1, and the ball 4 exposed from the lower notch 3c is in rolling fit with the lower rolling groove 1b3 of the corresponding rail body 1;
the load 5 of the precision ball curve guide rail is arranged on the connecting shaft 2.
Thus, since the balls 4 arranged in a circular ring shape in the roller 3 are precisely roll-fitted into the upper rolling groove 1b1 and the lower rolling groove 1b3 of the rail body 1, respectively, it is possible to: when the load 5 drives the ball mechanism to move along the extending direction of the two rail bodies 1, each ball 4 of the roller 3 is in circular turnover motion, the motion form can freely turn along any curve, namely, the extending curves of the two rail bodies 1 can be designed into any curve, the ball mechanism can be ensured to easily turn, the motion precision is kept unchanged, and the rolling matching of the balls 4 ensures that the transmission efficiency is very high, so that the invention can realize the motion of any irregular curve track of the load 5 in precise turning, and has the advantages of easy turning, accuracy and reliability and high transmission efficiency.
In addition, the invention has the advantages of low processing difficulty, simple and reliable structure and low failure rate.
The above is a basic implementation manner of the first embodiment, and further optimization, improvement and limitation may be performed on the basis of the basic implementation manner:
preferably: the precise ball curve guide rail is provided with at least two sets of ball mechanisms, and the load 5 is simultaneously arranged on the connecting shaft 2 of each set of ball mechanism so as to ensure the balance of the load 5.
And when the load of the load 5 is large, the invention can balance the load 5 by adding the number of the ball mechanisms so as to ensure that the balls 4 cannot generate plastic deformation under compressive stress.
Preferably: the connecting shaft 2 can be fixedly connected with the roller 3.
Preferably: the connecting shaft 2 can also be rotatably connected with the roller 3 to increase the freedom of movement, so that the connecting shaft 2 can generate certain deflection, and the precise ball curve guide rail is more reliable in work and less prone to being blocked.
Preferably: when the connecting shaft 2 is rotatably connected with the roller 3, the axis of the connecting shaft 2 is coaxial with the annular rolling groove 3b of the roller 3.
Preferably: any two adjacent rollers 3 in the annular rolling grooves 3b of the rollers 3 are contacted.
Preferably: the upper notch 3a and the lower notch 3c are both smaller than the size required for two balls 4 to pass through simultaneously so as to prevent the balls 4 from being separated from the annular rolling groove 3b through the upper notch 3a or the lower notch 3 c.
Preferably: felt sheets 6 are fixed on the top surface and the bottom surface of the roller 3, and the felt sheets 6 are in contact with the roller cavity 1b2 of the rail body 1. Therefore, on one hand, the felt sheet 6 can be used for preventing the roller 3 from rubbing the rail body 1, and on the other hand, the felt sheet 6 can be used for brushing away dust on the roller cavity 1b2, so that the smooth movement of the ball mechanism is ensured.
Example two
On the basis of the first embodiment, the second embodiment also adopts the following preferred embodiments:
the roller 3 consists of an inner ring part 3-1, a front outer arc part 3-2 and a rear outer arc part 3-3, and the front outer arc part 3-2 and the rear outer arc part 3-3 are fixedly connected with the inner ring part 3-1 through connecting parts 3-4 respectively; the outer circumferential surface of the inner ring portion 3-1 is provided with a circular groove, the inner arc surfaces of the front outer arc portion 3-2 and the rear outer arc portion 3-3 are provided with arc grooves, the circular groove of the inner ring portion 3-1, the arc groove of the front outer arc portion 3-2 and the arc groove of the rear outer arc portion 3-3 enclose the annular rolling groove 3b, the upper notch 3a is formed between the upper portion of the front outer arc portion 3-2 and the upper portion of the rear outer arc portion 3-3, and the lower notch 3c is formed between the lower portion of the front outer arc portion 3-2 and the lower portion of the rear outer arc portion 3-3. The roller 3 has the advantages of simple and compact structure and easy production and manufacture.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the third embodiment further adopts the following preferred embodiments:
the load 5 is mounted on the connecting shaft 2 through a rolling bearing 7, so that the load 5 can move along the curve extending direction of the two rail bodies 1, and meanwhile, the load can carry out autorotation motion through the rolling bearing 7, and the device has important significance for special complex compound motion.
Preferably, two rolling bearings 7 are mounted on each connecting shaft 2, and the load 5 is fixedly connected with outer rings of the rolling bearings 7.
The present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic technical concept of the invention as described above, according to the common technical knowledge and conventional means in the field.
Claims (10)
1. A precise ball curve guide rail comprises two rail bodies (1) which are parallel to each other and extend along a curve;
the method is characterized in that:
track grooves (1b) extending along the curves are formed in the inner side faces (1a) of the two rail bodies (1), and the track grooves (1b) are composed of an upper rolling groove (1b1), a roller containing cavity (1b2) and a lower rolling groove (1b3) which are sequentially communicated from top to bottom;
the precise ball curve guide rail also comprises a ball mechanism, and the ball mechanism is provided with a connecting shaft (2) and two rollers (3); the connecting shaft (2) is connected between the two rollers (3), the rollers (3) are provided with an upper notch (3a), an annular rolling groove (3b) and a lower notch (3c) which are sequentially communicated from top to bottom, and a plurality of balls (4) which are in rolling fit with the annular rolling groove (3b) are arranged in the annular rolling groove (3 b); the two rollers (3) are respectively positioned in the roller cavities (1b2) of the two rail bodies (1), so that: the balls (4) exposed from the upper notch (3a) are in rolling fit with the upper rolling groove (1b1) of the corresponding rail body (1), and the balls (4) exposed from the lower notch (3c) are in rolling fit with the lower rolling groove (1b3) of the corresponding rail body (1);
and the load (5) of the precise ball curve guide rail is arranged on the connecting shaft (2).
2. The precision ball curve track of claim 1, wherein: the precise ball curve guide rail is provided with at least two sets of ball mechanisms, and the load (5) is simultaneously arranged on the connecting shaft (2) of each set of ball mechanism.
3. The precision ball curve track of claim 1, wherein: the connecting shaft (2) is fixedly connected with the roller (3).
4. The precision ball curve track of claim 1, wherein: the connecting shaft (2) is rotationally connected with the roller (3).
5. The precision ball curve track of claim 4, wherein: the axis of the connecting shaft (2) is coaxial with the annular rolling groove (3b) of the roller (3).
6. The precision ball curve track of claim 1, wherein: any two adjacent rollers (3) in the annular rolling grooves (3b) of the rollers (3) are in contact.
7. The precision ball curve track of claim 6, wherein: the upper notch (3a) and the lower notch (3c) are smaller than the size required by two balls (4) to pass through simultaneously.
8. The precision ball curve track of claim 1, wherein: felt sheets (6) are fixed on the top surface and the bottom surface of the roller (3), and the felt sheets (6) are in contact with the roller cavity (1b2) of the rail body (1).
9. The precision ball curve guide of any of claims 1 to 8, wherein: the roller (3) consists of an inner ring part (3-1), a front outer arc part (3-2) and a rear outer arc part (3-3), and the front outer arc part (3-2) and the rear outer arc part (3-3) are fixedly connected with the inner ring part (3-1) through connecting parts (3-4) respectively; the outer circumferential surface of the inner ring part (3-1) is provided with a circular groove, the inner arc surfaces of the front outer arc part (3-2) and the rear outer arc part (3-3) are provided with circular arc grooves, the circular groove of the inner ring part (3-1), the circular arc groove of the front outer arc part (3-2) and the circular arc groove of the rear outer arc part (3-3) enclose the circular rolling groove (3b), the upper notch (3a) is formed between the upper part of the front outer arc part (3-2) and the upper part of the rear outer arc part (3-3), and the lower notch (3c) is formed between the lower part of the front outer arc part (3-2) and the lower part of the rear outer arc part (3-3).
10. The precision ball curve guide of any of claims 1 to 8, wherein: the load (5) is mounted on the connecting shaft (2) through a rolling bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173953.8A CN113062922B (en) | 2021-02-09 | 2021-02-09 | Precision ball bend guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173953.8A CN113062922B (en) | 2021-02-09 | 2021-02-09 | Precision ball bend guide rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113062922A true CN113062922A (en) | 2021-07-02 |
| CN113062922B CN113062922B (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110173953.8A Active CN113062922B (en) | 2021-02-09 | 2021-02-09 | Precision ball bend guide rail |
Country Status (1)
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|---|---|
| CN (1) | CN113062922B (en) |
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