CN102705464A - Double-nut gasket type internal circulating ball screw assembly - Google Patents
Double-nut gasket type internal circulating ball screw assembly Download PDFInfo
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- CN102705464A CN102705464A CN2011100760792A CN201110076079A CN102705464A CN 102705464 A CN102705464 A CN 102705464A CN 2011100760792 A CN2011100760792 A CN 2011100760792A CN 201110076079 A CN201110076079 A CN 201110076079A CN 102705464 A CN102705464 A CN 102705464A
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- lead screw
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- secondary nut
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Abstract
The invention relates to a double-nut gasket type internal circulating ball screw assembly, which comprises a lead screw which is transversely arranged, wherein external threads are arranged on the outer circumference of the lead screw; a primary nut and a secondary nut are sleeved on the lead screw and are arranged on the left and right sides; a gasket is arranged between the primary nut and the secondary nut; the primary nut, the secondary nut and the gasket are connected through a connecting key; the connecting key is fixed on the secondary nut through a bolt; internal threads are arranged on inner walls of the primary nut and the secondary nut; a thread port of each internal thread respectively corresponds to that of an external thread; the thread ports are spliced to form raceways; dustproof rings are arranged between the left end of the primary nut and the lead screw and between the right end of the secondary nut and the lead screw; reversers are arranged in the primary nut and the secondary nut; a notch of each reverser corresponds to two adjacent external thread ports; and steel balls which are arranged in a row are arranged in each raceway. The double-nut gasket type internal circulating ball screw assembly is simple in structure, convenient to assemble and disassemble, reliable in operation and high in rigidity.
Description
Technical field:
The present invention relates to a kind of lathe with circulating ball lead screw pair in the double nut gasket type.
Background technique:
Along with engineering goods at a high speed, efficient, automation direction development, numerical control machining center and electromechanical integration machinery etc., and feeding drives and constantly carries.Location, high-speed cutting, high-speed driving have proposed brand-new requirement to the rolling function parts fast, because linear electric motor cost an arm and a leg, control system is complicated, and the steel ball leading screw is still the best selection of high-speed driving.The feed speed of steel ball lead screw pair is the product of leading screw rotating speed and leading screw helical pitch, therefore realizes that the high speed feed of steel ball leading screw has two kinds of methods: the one, improve the leading screw rotating speed, and the 2nd, increase the leading screw helical pitch.At present general high speed steel ball lead screw pair all is that big lead screw is secondary, and big helical pitch steel ball lead screw pair adopts common outer circulation structure, and this outer circulation cost is higher.
Summary of the invention:
The objective of the invention is provides a kind of simple in structure, easy to loading and unloading in order to overcome above deficiency, reliable operation, circulating ball lead screw pair in the double nut gasket type of good rigidly.
The object of the invention is realized through following technological scheme: circulating ball lead screw pair in a kind of double nut gasket type, comprise a horizontal screw mandrel of placing, and the excircle of screw mandrel is provided with outside thread; Be with mother nut and secondary nut on the screw mandrel, place about mother nut and secondary nut, between mother nut and secondary nut, be provided with pad; Mother nut, secondary nut are connected through connecting key with pad, and connecting key is equipped with internal thread through being bolted on the secondary nut on the inwall of mother nut and secondary nut; The respectively corresponding externally threaded screw mouth of the screw mouth of internal thread; And both piece together raceway, between the left end and screw mandrel of mother nut, be equipped with dust ring between the right-hand member of secondary nut and the screw mandrel, evenly are provided with a plurality of reversers on the inner circumference in mother nut and the secondary nut; All corresponding two the adjacent outside thread mouths of the notch of each reverser; Be equipped with the steel ball that is arranged in a row setting in each raceway, raceway forms loop body through steel ball and reverser, and the number of said steel ball is 4-8.。
Further improvement of the present invention is: said reverser is floating type.
The present invention compared with prior art has the following advantages: between mother nut and secondary nut, be provided with pad; Through changing the thickness of pad, can make nut produce axial displacement like this, reach double nut pretension and the purpose of transferring the crack; This screw component is not only simple in structure; It is comparatively convenient to load and unload, reliable operation, and good rigidly.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Label among the figure: 1-screw mandrel, 2-outside thread, 3-mother nut, the secondary nut of 4-, 5-connecting key, 6-bolt, 7-pad, 8-internal thread, 9-dust ring, 10-reverser, 11-steel ball.
Embodiment:
In order to deepen to understanding of the present invention, will combine embodiment and accompanying drawing that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
Show a kind of embodiment of circulating ball lead screw pair in the double nut gasket type of the present invention like Fig. 1, comprise the screw mandrel 1 laterally placed, the excircle of screw mandrel 1 is provided with outside thread 2; On screw mandrel 1, be with mother nut 3 and secondary nut 4, mother nut 3 and secondary nut about 4 placements of institute are provided with pad 7 between mother nut 3 and secondary nut 4; Mother nut 3, secondary nut 4 and pad 7 are connected through connecting key 5, and connecting key 5 is fixed on the secondary nut 4 through bolt 6, are equipped with internal thread 8 on the inwall of mother nut 3 and secondary nut 4; The screw mouth of the respectively corresponding outside thread 2 of the screw mouth of internal thread 8, and both piece together raceway is between the left end of mother nut 3 and the screw mandrel 1, be equipped with dust ring 9 between the right-hand member of secondary nut 4 and the screw mandrel 1; According to evenly being provided with a plurality of reversers 10 on the inner circumference of lead screw pair bearing capacity size in mother nut 3 and secondary nut 4, reverser is floating type, all corresponding two the adjacent outside thread mouths of the notch of each reverser 10; Be equipped with the steel ball 11 that is arranged in a row setting in each said raceway, like this through between mother nut 3 and secondary nut 4, being provided with pad 7, through the thickness of adjustment pad 7; Reach the precompression between two nuts, reach double nut pretension and the purpose of transferring the crack, this screw component is not only simple in structure; It is comparatively convenient to load and unload, reliable operation, and good rigidly; Reverser 10 is housed in nut, and raceway forms loop body through steel ball 11 and reverser 10, by means of the bead returning groove effect on the reverser 10; Force steel ball 11 after raceway rolls a circle, climb over threads of lead screw and be rolled into crest, come back to initial raceway; Constitute circuit steel ball chain of a circle, and dust ring 9 is attached to screw mandrel 1 surface, prevents that iron filings cooling liquid etc. from getting in the loop body; On the flange of mother nut 3, be provided with oil hole, i.e. the present invention is by being made up of screw mandrel 1, major and minor nut 3,4, steel ball 11 and reverser 10 etc., and major and minor nut 3,4 is sleeved on the leading screw 1; Steel ball 7 is contained in the steel ball spiral rolling track of being made up of the spiral rolling track groove of leading screw 1 and nut, on nut 1 circumference, evenly is distributed the installation slotted eye, in slotted eye is installed, a reverser is housed respectively; On the inwall of reverser, be provided with bead returning groove, the two ends of bead returning groove respectively with nut on two adjacent turn spiral rolling track grooves be communicated with, constitute the steel ball endless chain of a sealing; Like this when lead screw pair is worked; Each circle steel ball forms a circulation through the guiding of reverser pearl conduit 10 last time thereby cross the leading screw surface, makes product have long service life, transmission efficiency and advantages such as precision height, good operating stability.
Claims (3)
1. circulating ball lead screw pair in the double nut gasket type; Comprise a horizontal screw mandrel of placing, the excircle of said screw mandrel is provided with outside thread, it is characterized in that: be with mother nut and secondary nut on the said screw mandrel; Place about said mother nut and said secondary nut; Between said mother nut and said secondary nut, be provided with pad, said mother nut, said secondary nut are connected through connecting key with said pad, and said connecting key is through being bolted on the said secondary nut; Be equipped with internal thread on the inwall of said mother nut and said secondary nut; Respectively corresponding said externally threaded screw mouth of the screw mouth of said internal thread, and both piece together raceway is between the left end of said mother nut and the said screw mandrel, be equipped with dust ring between the right-hand member of said secondary nut and the said screw mandrel; Evenly be provided with a plurality of reversers on the inner circumference in said mother nut and the said secondary nut; All corresponding two the adjacent outside thread mouths of the notch of each said reverser are equipped with the steel ball that is arranged in a row setting in each said raceway, and said raceway forms loop body through steel ball and said reverser.
2. according to circulating ball lead screw pair in the said double nut gasket type of claim 1, it is characterized in that: said reverser is floating type.
3. circulating ball screw pair in the double nut gasket type according to claim 1 and 2 is characterized in that: the number of said steel ball is 4-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100760792A CN102705464A (en) | 2011-03-28 | 2011-03-28 | Double-nut gasket type internal circulating ball screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100760792A CN102705464A (en) | 2011-03-28 | 2011-03-28 | Double-nut gasket type internal circulating ball screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102705464A true CN102705464A (en) | 2012-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100760792A Pending CN102705464A (en) | 2011-03-28 | 2011-03-28 | Double-nut gasket type internal circulating ball screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102705464A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410940A (en) * | 2013-08-20 | 2013-11-27 | 山东威达重工股份有限公司 | Rolling and sliding composite lead screw pair |
| CN104763790A (en) * | 2015-04-19 | 2015-07-08 | 吉林大学 | Metal powder electron beam melting lamination layer shaping workbench z-axis movement system |
| CN106122410A (en) * | 2016-08-31 | 2016-11-16 | 浙江卓求传动科技有限公司 | A kind of dislocation ball nut ball screw |
-
2011
- 2011-03-28 CN CN2011100760792A patent/CN102705464A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410940A (en) * | 2013-08-20 | 2013-11-27 | 山东威达重工股份有限公司 | Rolling and sliding composite lead screw pair |
| CN104763790A (en) * | 2015-04-19 | 2015-07-08 | 吉林大学 | Metal powder electron beam melting lamination layer shaping workbench z-axis movement system |
| CN106122410A (en) * | 2016-08-31 | 2016-11-16 | 浙江卓求传动科技有限公司 | A kind of dislocation ball nut ball screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |