CN103277476A - Device capable of eliminating gap between screw and nut - Google Patents
Device capable of eliminating gap between screw and nut Download PDFInfo
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- CN103277476A CN103277476A CN2013101475978A CN201310147597A CN103277476A CN 103277476 A CN103277476 A CN 103277476A CN 2013101475978 A CN2013101475978 A CN 2013101475978A CN 201310147597 A CN201310147597 A CN 201310147597A CN 103277476 A CN103277476 A CN 103277476A
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Abstract
The invention discloses a device capable of eliminating a gap between a screw and a nut. The device capable of eliminating the gap between the screw and the nut comprises the nut arranged on the screw. Two narrow grooves are radially formed in the nut and symmetrical to each other about an axis of the nut. Hex socket adjusting screws are arranged on the narrow grooves. The device capable of eliminating the gap between the screw and the nut can meet the requirement for adjusting a gap of a screw and nut pair and is even in nut deformation, high in adjusting precision, balanced in abrasion, capable of prolonging service life, simple in structure and convenient to operate.
Description
Technical field
The present invention relates to the feed screw nut field, particularly relate to a kind of device that can eliminate the feed screw nut gap.
Background technique
The feeding transmission of numerical control machine tool is numerically controlled direct object, not still profile control of argument position control, and the last coordinate precision of workpiece and contour accuracy all are subjected to the influence of transmission accuracy, sensitivity and the stability of feeding transmission.Therefore, require that the feed servo system of numerical control machine tool satisfies that surface friction drag is little, transmission accuracy and rigidity height, the such requirement in little, no gap of moving element inertia.In order to guarantee that transmission system do not have the gap, at first to improve the precision of various mechanical parts, it is less important eliminates various gaps as far as possible, all should take to eliminate the structure in gap as coupling, gear pair, ball wire bar pair and support unit thereof etc.
Wherein the axial clearance of ball screw pair typically refers to leading screw and nut does not have when relatively rotating, the maximum axial play between leading screw and the nut.Except the play of structure itself, after applying thrust load, axial clearance also comprises the play that resiliently deformable causes.Usually adopt double nuts structure to eliminate the axial clearance of ball wire bar pair, specifically adjustment mode has pad to transfer crack formula, tooth difference to transfer crack formula, screw thread to transfer the crack formula.The double nut gap-adjusting structure exists adjusts complicated, the inaccurate shortcoming of pretension amount.Except the double nut gap-eliminating structure, the single nut crack ballscrew nut fitting that disappears has appearred in recent years.As shown in Figure 1.Nut is radially being opened a thin groove after finishing correct grinding, adjust screw by interior hexagonal and realized adjustment and the pretension in the gap between nut and leading screw very easily.But also there is drawback in this kind structure, and it is inhomogeneous to show as the nut amount of tightening up, and the nut wearing and tearing are uneven.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of device that can eliminate the feed screw nut gap, can satisfy the requirement that the feed screw nut auxiliary air gap is adjusted, and the nut amount of deformation is even, and it is higher to adjust precision.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: a kind of device that can eliminate the feed screw nut gap is provided, comprise the nut that is arranged on the leading screw, described nut has two narrow grooves diametrically, described narrow groove is about nut axis symmetry, and hexagonal is adjusted screw in being equipped with on the described narrow groove.
Preferably, described interior hexagonal is adjusted screw and is passed described narrow groove, and interior hexagonal is adjusted screw about nut axis symmetry.
The invention has the beneficial effects as follows: the present invention can guarantee that nut tightens up evenly, and it is higher to adjust precision, and abrasion equilibration improved nut working life, and this apparatus structure is simple, and is easy to operate.
Description of drawings
Fig. 1 is the disappear sectional structure schematic representation of crack ballscrew nut fitting of prior art single nut;
Fig. 2 is a kind of sectional structure schematic representation that can eliminate the device in feed screw nut gap of the present invention;
The mark of each parts is as follows in the accompanying drawing: 1, nut; 2, interior hexagonal is adjusted screw; 3, narrow groove; 4, leading screw.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
See also Fig. 2, the embodiment of the invention comprises:
A kind of device that can eliminate the feed screw nut gap comprises the nut 1 that is arranged on the leading screw 4, and described nut 1 has two narrow grooves 3 diametrically, and described narrow groove 3 is about nut 1 axis symmetry, and hexagonal is adjusted screw 2 in being equipped with on the described narrow groove 3; Hexagonal is adjusted screw 2 and is passed described narrow groove 3 in described, and interior hexagonal is adjusted screw 2 about nut 1 axis symmetry.
When the adjusting play, according to the specific requirement of adjusting play, only interior hexagonal need be adjusted screw 2 and distinguish precession simultaneously or screw out the identical number of turns of tapped hole, just can satisfy the requirement that the feed screw nut auxiliary air gap is adjusted.The present invention can guarantee that nut tightens up evenly, and it is higher to adjust precision, and abrasion equilibration improved nut working life, and this apparatus structure is simple, and is easy to operate.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (2)
1. the device that can eliminate the feed screw nut gap, comprise the nut (1) that is arranged on the leading screw (4), it is characterized in that: described nut (1) has two narrow grooves (3) diametrically, described narrow groove (3) is about nut (1) axis symmetry, and hexagonal is adjusted screw (2) in being equipped with on the described narrow groove (3).
2. a kind of device that can eliminate the feed screw nut gap according to claim 1 is characterized in that: hexagonal is adjusted screw (2) and is passed described narrow groove (3) in described, and interior hexagonal is adjusted screw (2) about nut (1) axis symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101475978A CN103277476A (en) | 2013-04-25 | 2013-04-25 | Device capable of eliminating gap between screw and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101475978A CN103277476A (en) | 2013-04-25 | 2013-04-25 | Device capable of eliminating gap between screw and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103277476A true CN103277476A (en) | 2013-09-04 |
Family
ID=49060070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101475978A Pending CN103277476A (en) | 2013-04-25 | 2013-04-25 | Device capable of eliminating gap between screw and nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103277476A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60231064A (en) * | 1984-04-26 | 1985-11-16 | Kuroda Precision Ind Ltd | Ball screw |
| US20020152822A1 (en) * | 2001-04-23 | 2002-10-24 | Yung-Tsai Chuo | Ball screw having a cooling channel |
| US20050252324A1 (en) * | 2004-04-21 | 2005-11-17 | Nsk Ltd. | Ball screw device |
| CN2775396Y (en) * | 2005-03-03 | 2006-04-26 | 深圳市威远精密技术有限公司 | Adjustable rolling ball screw pair screw nut |
| WO2006131948A2 (en) * | 2005-06-10 | 2006-12-14 | Bimeccanica S.R.L. | A support assembly for receiving a nut coupled to a threaded bar |
| CN101939566A (en) * | 2008-02-06 | 2011-01-05 | Trw汽车美国有限责任公司 | Ball screw and nut assembly |
| JP2011169434A (en) * | 2010-02-22 | 2011-09-01 | Jtekt Corp | Ball screw |
| CN102678866A (en) * | 2012-05-25 | 2012-09-19 | 西北工业大学 | Planetary roller screw assembly |
| CN202646573U (en) * | 2012-04-06 | 2013-01-02 | 蚌埠市金洋机床有限责任公司 | Single-nut regulating structure of screw nut pair |
| CN202707972U (en) * | 2011-12-31 | 2013-01-30 | 宁波滚石自动化科技有限公司 | Precompressed mechanism of ballscrew pair |
| CN203202146U (en) * | 2013-04-25 | 2013-09-18 | 苏州市职业大学 | Device capable of removing lead screw nut gap |
-
2013
- 2013-04-25 CN CN2013101475978A patent/CN103277476A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60231064A (en) * | 1984-04-26 | 1985-11-16 | Kuroda Precision Ind Ltd | Ball screw |
| US20020152822A1 (en) * | 2001-04-23 | 2002-10-24 | Yung-Tsai Chuo | Ball screw having a cooling channel |
| US20050252324A1 (en) * | 2004-04-21 | 2005-11-17 | Nsk Ltd. | Ball screw device |
| CN2775396Y (en) * | 2005-03-03 | 2006-04-26 | 深圳市威远精密技术有限公司 | Adjustable rolling ball screw pair screw nut |
| WO2006131948A2 (en) * | 2005-06-10 | 2006-12-14 | Bimeccanica S.R.L. | A support assembly for receiving a nut coupled to a threaded bar |
| CN101939566A (en) * | 2008-02-06 | 2011-01-05 | Trw汽车美国有限责任公司 | Ball screw and nut assembly |
| JP2011169434A (en) * | 2010-02-22 | 2011-09-01 | Jtekt Corp | Ball screw |
| CN202707972U (en) * | 2011-12-31 | 2013-01-30 | 宁波滚石自动化科技有限公司 | Precompressed mechanism of ballscrew pair |
| CN202646573U (en) * | 2012-04-06 | 2013-01-02 | 蚌埠市金洋机床有限责任公司 | Single-nut regulating structure of screw nut pair |
| CN102678866A (en) * | 2012-05-25 | 2012-09-19 | 西北工业大学 | Planetary roller screw assembly |
| CN203202146U (en) * | 2013-04-25 | 2013-09-18 | 苏州市职业大学 | Device capable of removing lead screw nut gap |
Non-Patent Citations (2)
| Title |
|---|
| 杨钟胜: "几种国外丝杠螺母副消除间隙机构", 《机械工程师》 * |
| 王天旭: "滚珠丝杠副反向间隙调整方法", 《设备管理与维修》 * |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130904 |