CN201353711Y - Leading screw supporting structure used in the transmission of machine tool over-long ball leading screw - Google Patents
Leading screw supporting structure used in the transmission of machine tool over-long ball leading screw Download PDFInfo
- Publication number
- CN201353711Y CN201353711Y CNU2009200681341U CN200920068134U CN201353711Y CN 201353711 Y CN201353711 Y CN 201353711Y CN U2009200681341 U CNU2009200681341 U CN U2009200681341U CN 200920068134 U CN200920068134 U CN 200920068134U CN 201353711 Y CN201353711 Y CN 201353711Y
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- China
- Prior art keywords
- leading screw
- drag hook
- hook
- nut
- guide rail
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Abstract
The utility model discloses a leading screw supporting structure used in the transmission of machine tool over-long ball leading screw, wherein a left and a right brackets are arranged on two sides of a leading screw nut, the brackets slide along a guide rail, and hook the surface of the leading screw, opposite ends of the two brackets are respectively provided with a left and a right moveable draw hooks which are connected through a pin shaft, the two brackets are led to be in horizontal position in normal state through a pressing spring, two sides of the nut are respectively provided with a left and a right fixed draw hooks, when the nut moves right and left along the leading screw, the left fixed draw hook and the left movable draw hook are led to occlude or the right fixed draw hook and the right movable draw hook are led to occlude, and the side of the guide rail is provided with a bump block which can bump the occlusive fixed draw hook and the moveable draw hook to open when the nut moves to the position of the bump block, thereby enabling the nut to always have one of the brackets located on the axial central position of the leading screw for supporting in the whole leading screw traveling process. The structure overcomes the precision defects caused by bending deflection and vibration in the transmission of the over-long ball leading screw, enables the over-long leading screw to be used in large and medium size machine tools, and guarantees processing precision.
Description
Technical field
The utility model relates to a kind of leading screw supporting structure that is used for the transmission of lathe overlength ball-screw.
Background technology
The ball-screw transmission has that frictional resistance is little, transmission efficiency is high, movement sensitive, can not have the gap transmission, do not have characteristics such as idle running dead band oppositely the time, by applying the nut pretightning force, can improve transmission stiffness. extensively adopt for Digit Control Machine Tool etc.
Usually leading screw is positioned at the bed piece both sides, and leading screw is provided with nut, and leading screw rotates, and nut is along the leading screw displacement; After ball-screw length is greater than 6 meters,, can not satisfy the lathe instructions for use because defectives such as the amount of deflection that big L/D ratio produces, whirling vibration sharply descend the lead screw transmission precision.
Because this defective has been limited to the use of overlength ball-screw at Digit Control Machine Tool, influences the raising of big-and-middle-sized machine finish.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of leading screw supporting structure that is used for the transmission of lathe overlength ball-screw, utilize this structure to overcome the precision defective that causes owing to amount of deflection, vibration in the transmission of overlength ball-screw, the overlength ball-screw can be applied in big-and-middle-sized lathe, and guarantee the machining accuracy of lathe.
For solving the problems of the technologies described above, the leading screw supporting structure that the utility model is used for the transmission of lathe overlength ball-screw comprises leading screw, is located on the described leading screw and along the nut that leading screw moves, also comprises left tray, right carriage, left movable drag hook, right movable drag hook, a left side fixedly drag hook, right fixedly drag hook, two holddown springs, collision block and guide rails; A described left side, right carriage is hook-shaped, its lateral surface is provided with convex inclined plane, its hook face is an arc surface, a described left side, right carriage is located at the both sides of described nut, described guide rail is provided with groove and the parallel bed piece both sides of being located at described leading screw vertically, a described left side, the convex inclined plane of right carriage is positioned at the groove of described guide rail and can slides along guide rail, a described left side, the hook face holder of right carriage is sliding friction in the surface of described leading screw and when moving with the leading screw surface, a described left side, right movable drag hook end face is the inclined-plane, its other end is located at a described left side respectively by bearing pin, right carriage can bearing pin be the axle center upset also towards an end of described nut, described two holddown springs are located between described left tray and left movable drag hook and described right carriage and the right movable drag hook respectively and are made a left side, be in level during right movable drag hook normality, a described left side, right fixedly drag hook be located at described nut both sides respectively and when described nut moves respectively with a described left side, right movable drag hook interlock, described collision block two ends are inclined-planes, and described collision block is located at described guide rail side and is positioned at a described leading screw middle part and a described left side, right movable drag hook plane.
For guaranteeing that left and right carriage reliably slides along guide rail, the convex inclined plane of above-mentioned left and right carriage is the swallow-tail form convex inclined plane, and the groove of above-mentioned guide rail is a dovetail groove.
Be the stability that guarantees that left and right carriage slides, this structure also comprises two supports and two rollers, described two support one ends are located at the hook end of described left and right carriage respectively, and its other end is respectively equipped with roller by circular shaft, and the wheel face of described two rollers is against bed piece.
Because being used for the leading screw supporting structure of lathe overlength ball-screw transmission, the utility model adopted technique scheme, promptly a left side is set in the nut both sides, right carriage, a left side, right carriage is along the guide rail slip and hook the leading screw surface, a left side, the end in opposite directions of right carriage is respectively equipped with a left side that connects by bearing pin, right movable drag hook, a left side, right movable drag hook is horizontal when making normality by holddown spring, the nut both sides are respectively equipped with a left side, right fixedly drag hook, nut is along a leading screw left side, can make a left side fixedly drag hook and left movable drag hook interlock or right fixedly drag hook and right movable drag hook interlock when moving right, the guide rail side is provided with collision block, the left side that can rush open interlock when nut moves to the collision block position is the right side fixedly drag hook and the right movable drag hook of drag hook and left movable drag hook or interlock fixedly, so that the effect of supporting leading screw is played at the center that always has a carriage to be positioned at leading screw in the whole leading screw stroke.Utilize this structure to overcome the precision defective that causes owing to amount of deflection, vibration in the transmission of overlength ball-screw, the overlength ball-screw can be applied in big-and-middle-sized lathe, and guarantee the machining accuracy of lathe.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and embodiments:
Fig. 1 is for originally being used for the schematic diagram of the leading screw supporting structure of lathe overlength ball-screw transmission.
Fig. 2 is that the A of Fig. 1 is to view.
The specific embodiment
As depicted in figs. 1 and 2, the leading screw supporting structure that the utility model is used for the transmission of lathe overlength ball-screw comprises leading screw 1, be located on the described leading screw 1 and along the nut 2 that leading screw 1 moves, and also comprises fixedly fixedly drag hook 8, two holddown springs 9, collision block 10 and guide rails 11 of drag hook 7, the right side of left tray 3, right carriage 4, left movable drag hook 5, right movable drag hook 6, a left side; Described left tray 3 and right carriage 4 are hook-shaped, its lateral surface is provided with convex inclined plane 31, its hook face is an arc surface 32, described left tray 3 and right carriage 4 are located at the both sides of described nut 2, described guide rail 11 be provided with vertically groove 12 and with the described leading screw 1 parallel bed piece both sides of being located at, the convex inclined plane of described left tray 3 and right carriage 4 is positioned at the groove 12 of described guide rail 11 and can slides along guide rail 11, the hook face holder of described left tray 3 and right carriage 4 is sliding friction in the surface of described leading screw 1 and when moving with leading screw 1 surface, movable drag hook 5 in a described left side and right movable drag hook 6 end faces are inclined-planes, its other end is located at described left tray 3 respectively by bearing pin 13 and right carriage 4 can bearing pin 13 be the axle center upset also towards an end of described nut 2, described two holddown springs 9 are located between described left tray 3 and left movable drag hook 5 and described right carriage 4 and the right movable drag hook 6 respectively and are in level when making left movable drag hook 5 and right movable drag hook 6 normalities, a described left side fixedly drag hook 7 and right fixedly drag hook 8 is located at described nut 2 both sides respectively and when described nut 2 moves respectively with movable drag hook 5 in a described left side and right movable drag hook 6 interlocks, described collision block 10 two ends are inclined-planes, and described collision block 10 is located at the guide rail side and is positioned at described leading screw 1 middle part and movable drag hook 5 in a described left side and right movable drag hook 6 planes.
For guaranteeing that left tray 3 and right carriage 4 reliably slide along guide rail 11, the convex inclined plane of above-mentioned left tray 3 and right carriage 4 is swallow-tail form convex inclined planes, and the groove 12 of above-mentioned guide rail 11 is dovetail grooves.
Be the stability that guarantees that left tray 3 and right carriage 4 slide, this structure also comprises two supports 14 and two rollers 15, described two support 14 1 ends are located at the hook end of described left tray 3 and right carriage 4 respectively, its other end is respectively equipped with roller 15 by circular shaft 16, and the wheel face of described two rollers 15 is against bed piece 17.
The leading screw supporting structure that the utility model is used for the transmission of lathe overlength ball-screw is provided with a left side in the nut both sides, right carriage, a left side, right carriage is along the guide rail slip and hook the leading screw surface, a left side, the end in opposite directions of right carriage is respectively equipped with a left side that connects by bearing pin, right movable drag hook, a left side, right movable drag hook is horizontal when making normality by holddown spring, the nut both sides are respectively equipped with a left side, right fixedly drag hook, nut is along a leading screw left side, can make a left side fixedly drag hook and left movable drag hook interlock or right fixedly drag hook and right movable drag hook interlock when moving right, the guide rail side is provided with collision block, can when moving to the collision block position, nut clash into the inclined-plane of left movable drag hook or the inclined-plane of right movable drag hook in the inclined-plane by collision block, with fixing fixedly drag hook and the right movable drag hook of drag hook and left movable drag hook or the right side of rushing open interlock in a left side of rushing open interlock, so that the effect of supporting leading screw is played at the center that nut always has a carriage to be positioned at leading screw in whole leading screw stroke; For guaranteeing that left and right carriage along the stability that guide rail slides, also is provided with the roller that is provided with by support on carriage, the wheel face of roller has been strengthened the rigidity of carriage against bed piece simultaneously.Utilize this structure to overcome the precision defective that causes owing to amount of deflection, vibration in the transmission of overlength ball-screw, the overlength ball-screw can be applied in big-and-middle-sized lathe, and guarantee the machining accuracy of lathe.
Claims (3)
1, a kind of leading screw supporting structure that is used for the transmission of lathe overlength ball-screw, comprise leading screw, be located on the described leading screw and, it is characterized in that: also comprise fixedly fixedly drag hook, two holddown springs, collision block and guide rails of drag hook, the right side of left tray, right carriage, left movable drag hook, right movable drag hook, a left side along the nut that leading screw moves; A described left side, right carriage is hook-shaped, its lateral surface is provided with convex inclined plane, its hook face is an arc surface, a described left side, right carriage is located at the both sides of described nut, described guide rail is provided with groove and the parallel bed piece both sides of being located at described leading screw vertically, a described left side, the convex inclined plane of right carriage is positioned at the groove of described guide rail and can slides along guide rail, a described left side, the hook face holder of right carriage is sliding friction in the surface of described leading screw and when moving with the leading screw surface, a described left side, right movable drag hook end face is the inclined-plane, its other end is located at a described left side respectively by bearing pin, right carriage can bearing pin be the axle center upset also towards an end of described nut, described two holddown springs are located between described left tray and left movable drag hook and described right carriage and the right movable drag hook respectively and are made a left side, be in level during right movable drag hook normality, a described left side, right fixedly drag hook be located at described nut both sides respectively and when described nut moves respectively with a described left side, right movable drag hook interlock, described collision block two ends are inclined-planes, and described collision block is located at described guide rail side and is positioned at a described leading screw middle part and a described left side, right movable drag hook plane.
2, the leading screw supporting structure that is used for the transmission of lathe overlength ball-screw according to claim 1, it is characterized in that: the convex inclined plane of described left and right carriage is the swallow-tail form convex inclined plane, and the groove of described guide rail is a dovetail groove.
3, the leading screw supporting structure that is used for the transmission of lathe overlength ball-screw according to claim 1, it is characterized in that: this structure also comprises two supports and two rollers, described two support one ends are located at the hook end of described left and right carriage respectively, its other end is respectively equipped with described roller by circular shaft, and the wheel face of described two rollers is against bed piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200681341U CN201353711Y (en) | 2009-02-26 | 2009-02-26 | Leading screw supporting structure used in the transmission of machine tool over-long ball leading screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200681341U CN201353711Y (en) | 2009-02-26 | 2009-02-26 | Leading screw supporting structure used in the transmission of machine tool over-long ball leading screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353711Y true CN201353711Y (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200681341U Expired - Fee Related CN201353711Y (en) | 2009-02-26 | 2009-02-26 | Leading screw supporting structure used in the transmission of machine tool over-long ball leading screw |
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| CN (1) | CN201353711Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862973A (en) * | 2010-06-17 | 2010-10-20 | 莱芜市数控机床研究所 | Roller screw pair for numerical control gantry machine tool |
| CN102581629A (en) * | 2011-12-26 | 2012-07-18 | 上海三一精机有限公司 | Movable support mechanism for ultra-long screw |
| CN102744613A (en) * | 2012-06-28 | 2012-10-24 | 上海三一精机有限公司 | Lead screw auxiliary support device and machine tool |
| CN104511782A (en) * | 2014-12-19 | 2015-04-15 | 昆山华都精工机械设备有限公司 | Gantry lead screw mechanism |
| CN107701678A (en) * | 2017-11-17 | 2018-02-16 | 安道利佳智能科技（北京）股份公司 | Screw mandrel support meanss |
-
2009
- 2009-02-26 CN CNU2009200681341U patent/CN201353711Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862973A (en) * | 2010-06-17 | 2010-10-20 | 莱芜市数控机床研究所 | Roller screw pair for numerical control gantry machine tool |
| CN101862973B (en) * | 2010-06-17 | 2012-09-05 | 山东现代玉成数控机械制造有限公司 | Roller screw pair for numerical control gantry machine tool |
| CN102581629A (en) * | 2011-12-26 | 2012-07-18 | 上海三一精机有限公司 | Movable support mechanism for ultra-long screw |
| CN102744613A (en) * | 2012-06-28 | 2012-10-24 | 上海三一精机有限公司 | Lead screw auxiliary support device and machine tool |
| CN104511782A (en) * | 2014-12-19 | 2015-04-15 | 昆山华都精工机械设备有限公司 | Gantry lead screw mechanism |
| CN107701678A (en) * | 2017-11-17 | 2018-02-16 | 安道利佳智能科技（北京）股份公司 | Screw mandrel support meanss |
| CN107701678B (en) * | 2017-11-17 | 2024-03-22 | 安道利佳智能科技（北京）股份公司 | Screw rod supporting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161018 Address after: 200093 Shanghai military road, Yangpu District, No. 1146 Patentee after: Shanghai Machine Tool Factory Co., Ltd. Address before: 200245 Shanghai city Minhang District Huaning Road No. 190 Patentee before: Shanghai Heavy Duty Machine Tool Works Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20170226 |