CN202540012U - Auxiliary support structure of servo feed screw - Google Patents
Auxiliary support structure of servo feed screw Download PDFInfo
- Publication number
- CN202540012U CN202540012U CN2012200254466U CN201220025446U CN202540012U CN 202540012 U CN202540012 U CN 202540012U CN 2012200254466 U CN2012200254466 U CN 2012200254466U CN 201220025446 U CN201220025446 U CN 201220025446U CN 202540012 U CN202540012 U CN 202540012U
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- Prior art keywords
- leading screw
- screw
- support
- feed screw
- servo
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Abstract
The utility model discloses an auxiliary support structure of a servo feed screw, which comprises a motion worktable fixed on a feed screw nut and further comprises a support component and guide rails, wherein the guide rails are located under the feed screw and are parallel to the feed screw; the support component slides along the guide rails along with the motion of the feed screw nut; the support component is provided with two support points; and when one support point of the support component is located at the limit position of the motion travel of the feed screw nut, the other support point is located at the position of the largest droopy deformation of the feed screw. By using two adjusting shims to form V-shaped positioning, the auxiliary support structure of a servo feed screw has self-centering effect and is adjustable; the auxiliary support structure can ensure that the largest cantilever span of the feed screw is half of the effective travel when the feed screw nut is located at any position; and the auxiliary support structure has simple structure and small used space.
Description
Technical field
The utility model relates to the machine tool lead screw technical field, especially a kind of servo-actuated leading screw auxiliary support structure.
Background technology
The extensive use feed screw apparatus drives the motion of each feed shaft in the machine tool, and feed screw apparatus is generally by being fixedly set in leading screw on the fixture, being fixedly set in the nut that is connected with threads of lead screw on the movable part and connecting and drive the motor that leading screw rotates and form.Feed screw apparatus for horizontal arrangement; Horizontal screw lead is sagging easily under the effect of gravity, and particularly horizontal screw lead receives radial load and gravity effect in the high speed rotary course; As easy as rolling off a log rocking and sagging distortion; The leading screw meeting sagging 1mm (sagging deformation quantity and jib-length biquadratic are proportional) that general 4000m is long, so sagging distortion will inevitably influence the positioning accuracy of feed motion, causes defectives such as reduction of plant equipment machining accuracy and product rejection rate height.
In order to address the above problem; Easy method the most directly perceived is to adopt the diameter that increases horizontal screw lead to strengthen the rigidity of leading screw; Reducing the deformation of leading screw, but the feed screw apparatus overall volume is increased, thereby the machine tool volume weight is increased; Cost up does not but fundamentally solve the error that sagging distortion causes.The existing sagging location arrangements supporting construction of maximum possible that extensively is employed in reduces the maximum sagging deformation of leading screw.Because the maximum sagging deformation of leading screw position is usually located in the middle of the leading screw; Belong within the impulse stroke scope, in this scope, feed screw nut must pass through; And the feed screw nut diameter is much larger than the leading screw diameter; Can't normally cross the leading screw intermediate support assembly,, three types of processing methods arranged generally to this problem:
1, adopt the mechanical electronic hydraulic control technology, when feed screw nut moved to the supplemental support position, rams retracted was supported in control, discloses a kind of machine tool horizontal leading screw oil lift device such as Chinese patent CN 101462233A; Adopt supported mechanism to support in the leading screw bottom, the top has the roller of jacking leading screw, and supported mechanism receives the magnetic valve signal controlling, when the nut convergence of workbench; Signal to magnetic valve, supported mechanism breaks away from leading screw and descends, after nut passes through; Signal to magnetic valve, leading screw is lived in the jacking again of rising of supported mechanism, and these class methods adopt electrification control technology; Break down when malfunctioning in electrification control, supporting mechanism can not normally be dodged nut and passed through, and causes the collision of nut and supporting mechanism easily; Cause economic loss to the user, and the control systematic comparison is complicated, cost is than higher;
2, adopt feed screw nut to promote the supplemental support component movement, under identical effective travel situation, the leading screw length of these class methods needs more length to reserve;
3, adopt feed screw nut directly to press down supplemental support, to dodge feed screw nut.
The utility model content
The purpose of the utility model provides a kind of servo-actuated leading screw auxiliary support structure; Adopt the feed screw nut moving-member to promote the V-arrangement bracing frame with the moving-member associated movement; Can make feed screw nut be in any position; The maximum cantilever span is the half the of effective travel, has reduced the degree of the sagging deformation of leading screw effectively.
The utility model solves the technical scheme that its technical problem adopted:
A kind of servo-actuated leading screw auxiliary support structure; Be arranged between the fixture and movable part of plant equipment; Relatively moving of said fixture and said movable part realizes through the horizontal screw lead device; Said horizontal screw lead device has and is horizontally placed on the leading screw on the fixture and is fixedly set in the feed screw nut that is connected with said threads of lead screw on the movable part, wherein, comprises the motion workbench that is fixed on the said feed screw nut; Also comprise support component and guide rail; Said guide rail is positioned under the said leading screw and is parallel with said leading screw, and said support component is followed the motion of said feed screw nut and slided along said guide rail, and said support component has two strong points; When a strong point of said support component was positioned at the extreme position of said feed screw nut movement travel, another strong point was positioned at maximum sagging deformation place of said leading screw.
Further; Said support component comprises two bracing frames; Between said two bracing frames through one be parallel to said leading screw pull bar connect; The upper end of said two bracing frames is set in respectively on the said leading screw, and the lower end is located at respectively on the said guide rail, and the distance between two support frames as described above is the half the of said leading screw effective travel.
Further, be provided with adjustment holder part in the support frame as described above.
Further, said adjustment holder part comprises two support pad and base, and said two support pad are in contact with one another through an end and constitute the V-type groove mutually at an angle, be positioned at said leading screw under; By crouching on said base, stretching screw stretches in the said support pad after passing said base each said support pad through supporting screw.
Further, the said supporting screw of the below of each support pad is two, and said stretching screw is one, and said supporting screw lays respectively at the both sides of said stretching screw.
Further, said support component comprises that also two lay respectively on the support frame as described above and the collision block of establishing relatively.
Further, said support pad is made of copper.
Compared with prior art, the advantage applies of the utility model exists:
1) utilizes two adjustment pads to constitute the V-arrangements location, have Self-centering Action and can adjust;
2) two bracing frame distances are the half the of leading screw effective travel, guarantee that feed screw nut is in any position, and the maximum cantilever span that can both make leading screw is the half the of effective travel;
3) adjustment screw adjustment bearing height, the height that the wearing and tearing of compensation adjustment pad produce descends;
4) simple in structure, usage space is little, can be directly installed in the feed screw nut space scope, need not on lathe, to open up new space mounting, be on the Longmen machine tool crossbeam Y to the preferable selection of leading screw supplemental support.
Description of drawings
Fig. 1 is the structural representation of the utility model servo-actuated leading screw auxiliary support structure;
Fig. 2 be among Fig. 1 along A-A to cutaway view;
Fig. 3 is the partial enlarged drawing in B portion zone among Fig. 2;
Fig. 4 a is the working state figure when feed screw nut is positioned at leading screw effective travel limit on the left position in the utility model servo-actuated leading screw auxiliary support structure;
Fig. 4 b is the working state figure when feed screw nut is positioned at leading screw effective travel limit on the right-right-hand limit position in the utility model servo-actuated leading screw auxiliary support structure.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, but not as the qualification of the utility model.
Please referring to shown in Figure 1; The servo-actuated leading screw auxiliary support structure of the utility model servo-actuated leading screw auxiliary support structure is arranged between the fixture and movable part of plant equipment; Relatively moving of fixture and movable part realizes through the horizontal screw lead device; The horizontal screw lead device has the leading screw 0 that is horizontally placed on the fixture and is fixedly set in the feed screw nut 1 that is threaded with leading screw 0 on the movable part; Comprise the motion workbench 2 that is fixed on the feed screw nut 1, also comprise support component and guide rail 3, guide rail 3 is positioned under the leading screw 0 and is parallel with leading screw 0.Wherein, Support component is followed the motion of feed screw nut 1 and is slided along guide rail 3; Support component has two strong points, and when a strong point of support component was positioned at the extreme position of feed screw nut 1 movement travel, another strong point was positioned at maximum sagging deformation place of leading screw 0.Particularly; Simultaneously referring to shown in Figure 2, support component comprise between 41, two bracing frames 41 of two bracing frames through one be parallel to leading screw 0 pull bar 42 connect; The upper end of two bracing frames 41 is set in respectively on the leading screw 0; The lower end is located at respectively on the guide rail 3, and two bracing frames 41 are installed on the guide rail 3 with keeping constant space, can be free to slide.Distance between two bracing frames 41 is the half the of leading screw effective travel, and to guarantee no matter feed screw nut 1 is in any position, the maximum cantilever span that can both make leading screw 0 is the half the of leading screw effective travel, and promptly pull bar 42 length are the half the of leading screw effective travel.
Be provided with adjustment holder part in the bracing frame 41, particularly, adjustment holder part comprises two support pad 411 and base 412; Two support pad 411 are in contact with one another through an end and constitute the V-type groove mutually at an angle; Be positioned at leading screw 0 under, have Self-centering Action, and it is easy that adjustment is installed.By crouching on base 412, stretching screw 414 stretches in the support pad 411 after passing base 412 each support pad 411 through supporting screw 413.The supporting screw 413 of the below of each support pad 411 is two, and stretching screw 414 is one, and supporting screw 413 lays respectively at the both sides of stretching screw 414, and support component comprises that also two lay respectively on the bracing frame 41 and the collision block of establishing relatively 43.Through mounting material is two support pad, the 411 formation V-arrangements supports of copper, utilizes the Self-centering Action of v-shaped structure to eliminate the extra side action power to leading screw 0.Select copper to make pad, not only can reduce wearing and tearing, can be convenient for changing reconditioning adjustment support pad 411 again, to realize the adjustment of bearing height to leading screw 0.Change the height that the screw-in length of supporting screw 413 can adjustable support pad 411, can adjust the strong point of vee-block, can compensate the bearing height that support pad 411 wearing and tearing produce again and change.Stretching screw 414 is used for fixing support pad 411, guarantees it and can effectively work.
During work, servo-actuated leading screw auxiliary support apparatus of the present invention can divide three kinds of situation to the support of leading screw 0:
A is shown in Fig. 4 a, and when feed screw nut 1 was in the limit on the left position, an end bracing frame 41 of this auxiliary support structure just in time was supported in leading screw 0 maximum sagging deformation place, thereby has eliminated maximum sagging deformation;
B feed screw nut 1 constantly moves right, and in the time of in the middle of moving to leading screw 0, motion workbench 2 touches collision block 43, promotes this supplemental support and on guide rail 3, follows feed screw nut 1 motion.In this process, leading screw 0 has two places to support all the time, and leading screw maximum cantilever span is the half the of its effective travel, the i.e. length of pull bar 42;
C is shown in Fig. 4 b, and when feed screw nut 1 moves to low order end, promptly during the limit on the right-right-hand limit position, the other end bracing frame 41 of supplemental support just in time is supported in leading screw 0 maximum sagging deformation place, thereby has eliminated maximum sagging deformation.
This device can make feed screw nut 1 be in any position; The maximum cantilever span is the half the of effective travel; Reduced the sagging deformation of leading screw effectively, guaranteed the feed accuracy of whole travel range motion workbench, thereby guaranteed that lathe possesses continual and steady machining accuracy in whole feed motion.
The above is merely the utility model preferred embodiment; Be not thus the restriction the utility model claim; So the equivalent structure that all utilization the utility model specifications and diagramatic content have been done changes, and all is included in the protection domain of the utility model.
Claims (7)
1. servo-actuated leading screw auxiliary support structure; Be arranged between the fixture and movable part of plant equipment; Relatively moving of said fixture and said movable part realizes through the horizontal screw lead device; Said horizontal screw lead device has and is horizontally placed on the leading screw on the fixture and is fixedly set in the feed screw nut that is connected with said threads of lead screw on the movable part, it is characterized in that, comprises the motion workbench that is fixed on the said feed screw nut; Also comprise support component and guide rail; Said guide rail is positioned under the said leading screw and is parallel with said leading screw, and said support component is followed the motion of said feed screw nut and slided along said guide rail, and said support component has two strong points; When a strong point of said support component was positioned at the extreme position of said feed screw nut movement travel, another strong point was positioned at maximum sagging deformation place of said leading screw.
2. servo-actuated leading screw auxiliary support structure as claimed in claim 1; It is characterized in that; Said support component comprises two bracing frames, between said two bracing frames through one be parallel to said leading screw pull bar connect, the upper end of said two bracing frames is set in respectively on the said leading screw; The lower end is located at respectively on the said guide rail, and the distance between two support frames as described above is the half the of said leading screw effective travel.
3. servo-actuated leading screw auxiliary support structure as claimed in claim 2 is characterized in that, is provided with adjustment holder part in the support frame as described above.
4. servo-actuated leading screw auxiliary support structure as claimed in claim 3; It is characterized in that; Said adjustment holder part comprises two support pad and base, and said two support pad are in contact with one another through an end and constitute the V-type groove mutually at an angle, be positioned at said leading screw under; By crouching on said base, stretching screw stretches in the said support pad after passing said base each said support pad through supporting screw.
5. servo-actuated leading screw auxiliary support structure as claimed in claim 4 is characterized in that the said supporting screw of the below of each support pad is two, and said stretching screw is one, and said supporting screw lays respectively at the both sides of said stretching screw.
6. servo-actuated leading screw auxiliary support structure as claimed in claim 2 is characterized in that, said support component comprises that also two lay respectively on the support frame as described above and the collision block of establishing relatively.
7. like claim 4 or 5 described servo-actuated leading screw auxiliary support structures, it is characterized in that said support pad is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200254466U CN202540012U (en) | 2012-01-19 | 2012-01-19 | Auxiliary support structure of servo feed screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200254466U CN202540012U (en) | 2012-01-19 | 2012-01-19 | Auxiliary support structure of servo feed screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202540012U true CN202540012U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200254466U Expired - Fee Related CN202540012U (en) | 2012-01-19 | 2012-01-19 | Auxiliary support structure of servo feed screw |
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|---|---|
| CN (1) | CN202540012U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106050915A (en) * | 2016-06-23 | 2016-10-26 | 中山市美捷时包装制品有限公司 | Sliding block device used for linear motion system |
| CN106078309A (en) * | 2016-08-17 | 2016-11-09 | 天润曲轴股份有限公司 | Ball-screw follow-up supporting device |
-
2012
- 2012-01-19 CN CN2012200254466U patent/CN202540012U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106050915A (en) * | 2016-06-23 | 2016-10-26 | 中山市美捷时包装制品有限公司 | Sliding block device used for linear motion system |
| CN106078309A (en) * | 2016-08-17 | 2016-11-09 | 天润曲轴股份有限公司 | Ball-screw follow-up supporting device |
| CN106078309B (en) * | 2016-08-17 | 2018-01-30 | 天润曲轴股份有限公司 | Ball-screw follow-up supporting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20150119 |
|
| EXPY | Termination of patent right or utility model |