CN101367170B - Auxiliary support apparatus for preventing sag of transverse beam feed screw of numerical control machining center - Google Patents
Auxiliary support apparatus for preventing sag of transverse beam feed screw of numerical control machining center Download PDFInfo
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- CN101367170B CN101367170B CN2008100132541A CN200810013254A CN101367170B CN 101367170 B CN101367170 B CN 101367170B CN 2008100132541 A CN2008100132541 A CN 2008100132541A CN 200810013254 A CN200810013254 A CN 200810013254A CN 101367170 B CN101367170 B CN 101367170B
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- screw rod
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Abstract
The invention relates to an auxiliary supporting device for preventing a screw rod of a crossbeam in a numerical control machining center from sagging. The auxiliary supporting device is characterized in that a linear guide rail is arranged on the crossbeam of a main frame of a machine tool; supporting sleeves and gland bushes are connected together by bolts to form an annular structure; the supported screw rod runs through the middle of the annularity; two supporting sleeves are respectively arranged on two slide blocks of the linear guide rail and are fastened by the bolts; a steel tube is fixed in the middle between the two supporting sleeves; the steel tube and the two supporting sleeves are in rigid connection to form a unified whole; and the screw rod is supported to reduce of flexivity deformation to be minimal. A moving part driven by the screw rod is positioned between the two supporting sleeves. The screw rod rotates and drives a nut to displace along the horizontal direction; the supporting sleeves are subjected to the traction of the nut and moves with the moving part together; and the screw rod by which a slide board passes through in the moving process obtains supporting alignment, thereby achieving better horizontal precision.
Description
Technical field
The numerical control machining center entablature leading screw that the present invention relates in the mechanical production devices lathe prevents sagging auxiliary support apparatus.
Technical background
In recent years, flourish along with domestic equipment manufacture, in order to adapt to the needs of various enterprises, greatly developed a collection of high accuracy heavy machine tool as the machine industry of equipping the manufacturing machine tool, gantry machining center is this type of the ardentest lathe of market reaction recent years.Along with respectively strengthening gradually of gantry machining center to stroke, particularly Y is to crossbeam, stroke has reached more than the 5m, more than the leading screw length 7m, owing to be horizontal positioned, the rigidity of leading screw is lower, influenced by gravity or temperature rise etc. to produce sagging, contact stress increases between steel ball in the feed screw nut and the raceway, and is light then make the bigger plastic deformation of generation on the ball contact-making surface, influence the running precision of moving-member, in the high speed rotary course even produce swing; Heavy then can cause the tired spot corrosion of leading screw raceway working surface, thus the working life and the transmission efficiency of leading screw reduced.Need a kind of device that prevents that effectively leading screw is sagging of design, this matching requirements good rigidly, volume is little, and is easy to assembly, is easy to adjust.
Summary of the invention
The purpose of this invention is to provide a kind of numerical control machining center auxiliary support apparatus for preventing sag of transverse beam feed screw, in the time of can overcoming the leading screw horizontal positioned, the crooked sagging a kind of auxiliary support apparatus of the leading screw that causes because of factors such as gravity or temperature rises.
The numerical control machining center auxiliary support apparatus for preventing sag of transverse beam feed screw is characterized in that line slideway is installed on the crossbeam of lathe main frame, and two rail are fixed on the crossbeam upper and lower abreast; Two support sets are installed in respectively on two slide blocks of a line slideway, use bolted, and support set and gland are joined together to form a ring-like structure by screw, and supported leading screw passes from ring-like centre; Grade of two support set center fixed is longer than the steel pipe of leading screw, is rigidly connected to form a unified integral body, holds up leading screw, makes its deflection deformation reduce to minimum.The moving-member that is driven by leading screw vertically is stuck on two rail between two support sets, and support set is subjected to the traction of screw, has obtained the support alignment with the leading screw that is experienced in the common moving process of moving-member, thereby has obtained better horizontal accuracy.
Leading screw of the present invention prevents that sagging auxiliary support apparatus from can prevent leading screw effectively because sagging distortion that causes and the shake that produces in rotary course under various factors effects such as gravity, temperature rise, make that geometric accuracy, the positional precision of moving-member are significantly promoted, solve dynamic level alignment problem, improved the processing characteristics of lathe.Leading screw also can be done longlyer, can accomplish to be longer than 7m from 4m, enlarges the range of work of lathe, enriches the lathe type spectrum.
Description of drawings
Accompanying drawing 1 is this auxiliary support apparatus overall schematic;
Accompanying drawing 2 is side views of supplemental support;
The specific embodiment
In conjunction with the accompanying drawings 1,2 explanation the design's connecting relation: auxiliary support apparatus for preventing sag of transverse beam feed screw, be used for the large-sized numerical control machining center, see Fig. 1, it is characterized in that: line slideway 1 is installed on the crossbeam 15 of lathe main frame, and two rail 16 are fixed on crossbeam 15 upper and lower abreast; Two support sets 3 use bolted respectively on two slide blocks 11 of a line slideway 1, fix a long steel pipe 2 of 2m with nut 9 between two support sets 3, support set 3 and gland 5 are joined together to form a ring type structure by screw, supported leading screw 10 passes in the middle of ring type structure, steel pipe 2, guide rail 1 are rigidly connected by slide block 11 and support set 3, gland 5 and form a unified integral body, hold up leading screw, make its deflection deformation reduce to minimum; The slide plate 6 that is driven by leading screw vertically is stuck on two rail 16, and screw 7 is together between two support sets 3.Screw 7 is screwed together with slide plate 6, and screw 7 traction slide plates 6 move along leading screw.
The length of above-mentioned steel pipe can be long for 2m, and steel pipe 2 length slightly are longer than the width of moving-member.Above-mentioned moving-member is a slide plate 6, and the moving-member width that adopts in the different lathes may be different.
Be slide plate 6 in this example, see Fig. 2, gland 5 and the support set 3 inner self lubrication bearings 13 that embed, self lubrication bearing 13 is wrapped in ball-screw 10.An adjusting pad 14 is arranged between gland 5 and the support set 3, links together by screw, can 10 to regulate the tightness of ball-screw in self-lubricating bearing.At two glands 5 the anti-collision block 4 in a left side, right anti-collision block 8 are housed respectively to the inside mutually, when parts moved, material was that the anti-collision block 4 of two of nitrile rubber and 8 plays effect spacing and protection.An adjusting pad 12 is also arranged between support set 3 and the slide block 11, can adjust support set 3 position in the horizontal direction by trace.Support set 3 along with slide block 11 can, move left and right on line slideway 1.
When leading screw 10 begins rotation, screw 7 drives slide plates 6 and moves to the left.The beginning auxiliary support apparatus is static, and when screw 7 moved to its left end and anti-collision block 4 and gets together, whole auxiliary support apparatus had been with by screw 7 and is being continued to the left to move, and in the zone that screw moves, leading screw has all obtained support.When slide plate changed direction and moved right this moment, when its right end face and the anti-collision block 8 of screw got together, whole auxiliary support apparatus mobile to the right by the screw band, and this has just finished the whole process of supplemental support.It can guarantee that leading screw is supported, and has guaranteed precision in the scope of skateboarding.
Claims (3)
1. the numerical control machining center auxiliary support apparatus for preventing sag of transverse beam feed screw is characterized in that line slideway (1) is installed on the crossbeam (15) of lathe main frame, and two rail (16) are fixed on crossbeam (15) upper and lower abreast; Two support sets (3) use bolted respectively on two slide blocks (11) of a line slideway (1), fix a long steel pipe of 2m (2) between two support sets (3), support set (3) and gland (5) are joined together to form a ring type structure by screw, supported leading screw (10) passes in the middle of ring type structure, steel pipe, guide rail are rigidly connected by slide block and support set, gland and form a unified integral body, hold up leading screw, make its deflection deformation reduce to minimum; Slide plate (6) vertically is stuck on two rail (16), and screw (7) is positioned between two support sets (3) together; Leading screw (10) rotating band movable wire mother (7) along continuous straight runs displacement, the traction that slide plate (6) is subjected to screw (7) heads on support set (3) and moves jointly, the leading screw (10) that slide plate (6) is experienced in moving process has obtained the support alignment, thereby obtains better horizontal accuracy.
2. numerical control machining center auxiliary support apparatus for preventing sag of transverse beam feed screw according to claim 1, it is characterized in that the structure of support set (3) and gland (5): support set (3) top is rectangle, and bottom one side is that the right angle protrudes, and opposite side is that semicircle is recessed; The recessed inner self lubrication bearing (13) that embeds of the semicircle of support set (3), self lubrication bearing (13) is wrapped in leading screw (10); Gland (5) to be shaped as symmetrical semicircle recessed, its diameter extension edge and support set (3) lower junction are combined into a ring type structure; There is one to adjust pad (14) between gland (5) and the support set (3), and withholds by screw fastening.
3. numerical control machining center auxiliary support apparatus for preventing sag of transverse beam feed screw according to claim 1 is characterized in that the length of steel pipe (2) slightly is longer than the width of moving-member slide plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100132541A CN101367170B (en) | 2008-09-19 | 2008-09-19 | Auxiliary support apparatus for preventing sag of transverse beam feed screw of numerical control machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100132541A CN101367170B (en) | 2008-09-19 | 2008-09-19 | Auxiliary support apparatus for preventing sag of transverse beam feed screw of numerical control machining center |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101367170A CN101367170A (en) | 2009-02-18 |
| CN101367170B true CN101367170B (en) | 2010-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100132541A Active CN101367170B (en) | 2008-09-19 | 2008-09-19 | Auxiliary support apparatus for preventing sag of transverse beam feed screw of numerical control machining center |
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| CN (1) | CN101367170B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850527A (en) * | 2009-03-31 | 2010-10-06 | 南通国盛机电集团有限公司 | Novel Z-axis tensioning mechanism for gantry machining center |
| CN104647109A (en) * | 2014-01-26 | 2015-05-27 | 柳州正菱重型数控机床有限公司 | Auxiliary supporting device for machine tool beam screw rod |
| CN114211286B (en) * | 2021-12-08 | 2023-07-21 | 中航西安飞机工业集团股份有限公司 | Floating support structure of ball screw pair and method for preventing shaking |
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2008
- 2008-09-19 CN CN2008100132541A patent/CN101367170B/en active Active
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| Publication number | Publication date |
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| CN101367170A (en) | 2009-02-18 |
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Effective date of registration: 20210923 Address after: No.17a1, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee after: SHENYANG MACHINE TOOL (GROUP) CO.,LTD. Address before: 110141, No. 17, No. 1, development road, Shenyang economic and Technological Development Zone, Liaoning, China Patentee before: Zhongjie Machine Tool Co.,Ltd. |
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Address after: No.17a1, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee after: General Technology Group Shenyang Machine Tool Co.,Ltd. Address before: No.17a1, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee before: SHENYANG MACHINE TOOL (GROUP) CO.,LTD. |
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Effective date of registration: 20230928 Address after: No.17-A 1-4, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang, Liaoning Province, 110000 Patentee after: Shenyang Machine Tool Zhongjie Friendship Factory Co.,Ltd. Address before: No.17a1, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee before: General Technology Group Shenyang Machine Tool Co.,Ltd. |