CN203009751U - Cover plate type ball nut - Google Patents
Cover plate type ball nut Download PDFInfo
- Publication number
- CN203009751U CN203009751U CN 201320020709 CN201320020709U CN203009751U CN 203009751 U CN203009751 U CN 203009751U CN 201320020709 CN201320020709 CN 201320020709 CN 201320020709 U CN201320020709 U CN 201320020709U CN 203009751 U CN203009751 U CN 203009751U
- Authority
- CN
- China
- Prior art keywords
- reverser
- ball
- nut
- cover plate
- plate type
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a component part of a ball screw pair, in particular to a cover plate type ball nut. The cover plate type ball nut comprises a nut body (1), a cover plate (4) matched with a plane (2), and a pair of direction return devices (5), wherein a rolling path for a ball to roll is arranged on the internal surface of the nut body (1); the plane (2) is arranged on one side of the periphery of the nut body (1); the direction return devices (5) are in the same structure, and are used for leading the ball in or out of the rolling path; a groove (3) for allowing the ball to roll axially is formed in the cover plate; the direction return devices (5) are matched with the two ends of the groove (3) respectively; and the direction return devices (5) and bulged stop blocks (6) are formed by injection molding of plastic materials. The cover plate type ball nut is easy to form, low in noise, difficult to damage and durable.
Description
Technical field
The utility model relates to the constituent elements of ball screw pair, relates in particular to a kind of cover-plate type ball nut.
Background technique
Ball screw pair is that rotation motion is converted into straight line motion, or straight line motion is converted into a kind of driving mechanism of rotation motion.Typical ball screw pair is comprised of leading screw, nut, ball and reverser, wherein leading screw and nut are provided with the raceway that cooperatively interacts, between the raceway of leading screw and nut, reverser is contained on nut ball, is used for realizing back and the circulation of ball.When leading screw rotated, ball moved along the leading screw raceway, thereby drove the nut moving linearly.
For realizing the back shuttling movement of ball, ball screw pair is generally realized the back motion of ball by the reverser that matches with raceway is set on nut.And intubate is very general a kind of in reverser, is about to hollow Stainless Steel Tube and curves " U " shape, inserts in nut, with the effective raceway headtotail in nut, thereby realizes the back motion of ball.Protruding block one projection, specific shaping (in industry, the custom address is tongue) is therefore respectively arranged at the two ends of " U " shape intubate (not being flush end), in order to block ball, it is entered in hollow intubate.Because this projection baffle block molding is more difficult, need specific cutter to process, so its manufacturability is bad, and can collides with ball when blocking ball due to protruding block and produce larger noise; The more important thing is that protruding block position should carry out enhancement process or suitable heat treatment, but domesticly often do not accomplish, therefore protruding block position is very easy to damage, especially when the ball Rolling velocity is very fast.
Summary of the invention
Technical problem to be solved in the utility model is: the cover-plate type that a kind of moulding is easy, noise is little, fragile and not durable ball nut is provided.
the technological scheme that the utility model adopts is: a kind of cover-plate type ball nut, it comprises nut body, the internal surface of described nut body is provided with the raceway that rolls for ball, described nut body circumference one side is provided with a plane, it also comprises cover plate and the identical reverser for ball is imported or derives from raceway of a pair of structure that matches with described plane, described cover plate is provided with a groove that axially rolls for ball, and described a pair of reverser matches with groove two ends respectively, described reverser is provided be used to the protruding block that prevents that ball from skidding off from raceway and reverser joint, described reverser and protruding block are all by the mold injects moulding by plastic materials, and also being provided with two on the plane of described nut body communicates with described raceway and the through hole that embeds is installed for reverser.
adopt above structure compared with prior art, the utlity model has following advantage: adopt cover-plate type back device to realize back and the circulation of ball, namely use cover plate and plastic reverser to replace original intubate, reverser is easy with the protruding baffle block molding that is arranged on reverser like this, and because reverser and protruding block are all made by engineering plastics, so when ball and the collision of protruding block, noise is less, and because reverser and protruding block are by mold injects moulding (integrated) by plastics, its material is that 66% nylon adds 34% glass, so have good toughness and intensity and wear resistance, be not easy damage and wear-resisting.
As preferably, described reverser is comprised of two parts, is respectively the first reverser assembly and the second reverser assembly.Because it is more difficult to be applicable to the reverser once-through of this cover-plate type ball nut, so being divided into two parts, reverser separates moulding, the moulding ratio is easier to.
As preferably, described reverser and protruding block be one-body molded refer to described the first reverser assembly and protruding block one-body molded.Moulding is easier to like this.
As preferably, described through hole is waist through hole.Shape of through holes is made kidney-shaped, and perforate is more convenient like this, is conducive to processing, also is conducive to the assurance of lead to the hole site precision.
Description of drawings
Fig. 1 is the explosive view of the utility model cover-plate type ball nut.
Fig. 2 is the structural representation of the utility model cover-plate type ball nut cover plate.
Fig. 3 is the structural representation of reverser in the utility model cover-plate type ball nut.
Fig. 4 is the structural representation that in the utility model cover-plate type ball nut, reverser is taken apart.
As shown in the figure: 1, nut body; 2, plane; 3, groove; 4, cover plate; 5, reverser; 6, protruding block; 7, through hole; 8, the first reverser assembly; 9, the second reverser assembly.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further, but the utility model is not limited only to following embodiment.
as shown in the figure: a kind of cover-plate type ball nut, it comprises nut body 1, the internal surface of described nut body 1 is provided with the raceway that rolls for ball, described nut body 1 circumference one side is provided with a plane 2, it also comprises cover plate 4 and the identical reverser 5 for ball is imported or derives from raceway of a pair of structure that matches with described plane 2, described cover plate is provided with a groove 3 that axially rolls for ball, and described a pair of reverser 5 matches with groove 3 two ends respectively, described reverser 5 is provided be used to the protruding block 6 that prevents that ball from skidding off from raceway and reverser 5 joints, described reverser 5 is all by the mold injects moulding by plastic materials with protruding block 6, and also being provided with two on the plane 2 of described nut body 1 communicates with described raceway and for reverser 5, the through hole 7 that embeds is installed.one of them of described reverser 5 is in ball is imported groove 3 on cover plate 4 from raceway, then ball is from the interior movement of groove 3, move in raceway through another one reverser 5 again, so just be equivalent to through once circulation, described two reversers 5 are that the through hole 7 on the plane 2 that is embedded on nut body 1 is interior, be communicated with raceway, and described two reversers 5 also embed in cover plate 4, be communicated with the groove 3 in cover plate 4, described cover plate 4 is fixedly connected with by screw with plane 2, axial distance between described two through holes 7 is the length of groove 3, and two through holes 7 are communicated with raceway respectively, and this is communicated with the position and is mainly guaranteed by frock clamping.
Described reverser 5 is comprised of two parts, is respectively the first reverser assembly 8 and the second reverser assembly 9.Described the first reverser assembly embeds one of the second reverser assembly formation and moves to the passage of the groove 3 on cover plate 4 from raceway for ball.
Described reverser 5 refers to that with protruding block 6 is one-body molded the first reverser assembly 8 is one-body molded with protruding block 6.
Described through hole 7 is waist through hole.
working principle of the present utility model is: move in the raceway of ball in nut body 1, move to certain position and can meet protruding block 6 on one of them reverser 5, then ball can be blocked in the passage that then moves in one of them reverser 5 by protruding block 6, then move in groove 3 on cover plate 4 by the passages in one of them reverser 5, in the interior movement of groove 3, turn back on raceway by another reverser 5 more afterwards, ball has just passed through once circulation like this, and because protruding block 6 and the first reverser assembly 8 are integrated, and all made by engineering plastics, so noise is also less after ball collides protruding block 6, and because plastic shaping is easier than metal forming, so reverser 5 moulding of the present utility model are easier to.
Claims (4)
1. cover-plate type ball nut, it comprises nut body (1), the internal surface of described nut body (1) is provided with the raceway that rolls for ball, described nut body (1) circumference one side is provided with a plane (2), it is characterized in that: it also comprises cover plate (4) and the identical reverser (5) for ball is imported or derives from raceway of a pair of structure that matches with described plane (2), described cover plate is provided with a groove (3) that axially rolls for ball, and described a pair of reverser (5) matches with groove (3) two ends respectively, described reverser (5) is provided be used to the protruding block (6) that prevents that ball from skidding off from raceway and reverser (5) joint, described reverser (5) is all by the mold injects moulding by plastic materials with protruding block (6), and also being provided with two on the plane (2) of described nut body (1) communicates with described raceway and the through hole (7) that embeds is installed for reverser (5).
2. cover-plate type ball nut according to claim 1, it is characterized in that: described reverser (5) is comprised of two parts, is respectively the first reverser assembly (8) and the second reverser assembly (9).
3. cover-plate type ball nut according to claim 2 is characterized in that: described reverser (5) refers to that with protruding block (6) is one-body molded described the first reverser assembly (8) and protruding block (6) are one-body molded.
4. cover-plate type ball nut according to claim 1, it is characterized in that: described through hole (7) is waist through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020709 CN203009751U (en) | 2013-01-16 | 2013-01-16 | Cover plate type ball nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320020709 CN203009751U (en) | 2013-01-16 | 2013-01-16 | Cover plate type ball nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009751U true CN203009751U (en) | 2013-06-19 |
Family
ID=48601348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320020709 Expired - Lifetime CN203009751U (en) | 2013-01-16 | 2013-01-16 | Cover plate type ball nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156747A (en) * | 2015-07-29 | 2015-12-16 | 山东科瑞井控系统制造有限公司 | Ball screw for large-diameter fracture valve |
-
2013
- 2013-01-16 CN CN 201320020709 patent/CN203009751U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156747A (en) * | 2015-07-29 | 2015-12-16 | 山东科瑞井控系统制造有限公司 | Ball screw for large-diameter fracture valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |