CN202607252U - Lead screw supporting device on worktable-movable type gantry milling machine - Google Patents
Lead screw supporting device on worktable-movable type gantry milling machine Download PDFInfo
- Publication number
- CN202607252U CN202607252U CN 201220173934 CN201220173934U CN202607252U CN 202607252 U CN202607252 U CN 202607252U CN 201220173934 CN201220173934 CN 201220173934 CN 201220173934 U CN201220173934 U CN 201220173934U CN 202607252 U CN202607252 U CN 202607252U
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- CN
- China
- Prior art keywords
- lead screw
- leading screw
- workbench
- support member
- rolling wheels
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- Expired - Fee Related
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- 238000003801 milling Methods 0.000 title claims abstract description 9
- 238000005452 bending Methods 0.000 abstract description 8
- 238000005096 rolling process Methods 0.000 abstract 7
- 238000003754 machining Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a lead screw supporting device on a worktable-movable type gantry milling machine. The lead screw supporting device comprises a mounting seat, a supporting piece, at least one pair of rolling wheels and an elastic piece, wherein the mounting seat is fixed on a machine body; the supporting piece can be arranged on the mounting seat in an up-down moving manner; the rolling wheels are mounted on the supporting piece, and wheel axes extend in the length direction of a lead screw; the elastic piece is arranged between the supporting piece and the mounting seat and can provide an upward elastic restoring force for the supporting piece to enable wheel circumferential surfaces of the rolling wheels to be upward propped against the lead screw; the rolling wheels are positioned right below the middle part of the lead screw or a position close to the middle part of the lead screw; the paired rolling wheels are arranged front and back at an interval in the length direction of the lead screw; and on a vertical projection plane of the lead screw, the paired rolling wheels are symmetrically arranged left and right according to a vertical central line of the lead screw. Elastic support of the rolling wheels over the middle of the lead screw or a position close to the middle of the lead screw is realized through the elastic piece, so that bending deformation and deflection deformation of the lead screw are reduced or eliminated, positioning accuracy errors caused by the movement of the worktable and the influence of the movement of the worktable over work piece processing accuracy are reduced, the positioning accuracy of shafts processed by the machine tool is improved and the running stability and the running safety are increased.
Description
Technical field
the utility model relates to the screw lead supporting device on the movable workbench formula planer-type milling machine.
Background technology
in movable workbench formula planer-type milling machine, the type of drive of workbench divides ball-screw to drive and rack-and-pinion drives dual mode.In the ball-screw type of drive, the two ends of ball-screw all are arranged with bearing, and support through bearing block; The rotation of driven by servomotor leading screw; The nut of threaded engagement on leading screw can move forward and backward, and workbench and nut fix, and then realizes moving forward and backward of workbench.When the stroke that moves forward and backward when workbench is big; Then the length requirement of leading screw is very long, and suspending part branch makes the ball-screw mid portion produce downward bending because of deadweight causes the leading screw deflection deformation in the middle of the leading screw; Therefore can influence the stability of movable workbench; Reduce the steady of lathe operation, and cause the error of feed shaft mobile accuracy, so that the machining accuracy of workpiece is produced error.
Summary of the invention
thus the purpose of the utility model provides through carrying out resiliency supported in the centre of leading screw or near position intermediate and reduces or eliminates the bending of leading screw and the screw lead supporting device of deflection deformation, this device can improve the positioning accuracy and the traveling comfort of machine tooling axle.
are for achieving the above object; The technical scheme that the utility model adopts is: the screw lead supporting device on a kind of movable workbench formula planer-type milling machine; Comprise lathe bed, can all be arranged on leading screw on the said lathe bed, can drive the nut that said leading screw motor rotating, threaded engagement fix on said leading screw and with said workbench at the workbench that moves on the said lathe bed, bearing that two ends all are arranged with bearing and two ends through bearing block; The length direction along continuous straight runs of said leading screw extends; Said screw lead supporting device also comprises the mount pad that is fixed on the said lathe bed, can be arranged on support member on the said mount pad up or down, be contained on the said support member and at least one pair of roller that the wheel axial line all extends along the length direction of said leading screw, be arranged on the elastic-restoring force that can provide this support member to make progress between said support member and the said mount pad and make the wheel side face of the said roller residence of can upwards conflicting state the elastic component of leading screw; Said at least one pair of roller all is positioned at the middle part of said leading screw or near under the pars intermedia bit position; Paired said roller is provided with before and after the length direction of said leading screw at interval; And on the vertical projection face of said leading screw, said one-tenth pair roller is symmetrical set according to the vertical center line of said leading screw.
preferably; Be fixed with inclined board on the said workbench that fixes with said nut; Be fixed with declined board on the said support member; The upper surface of this declined board rear and front end all has first guiding surface, thereby the lower surface of said inclined board rear and front end all has to match with said first guiding surface to be used at said nut band and presses down this first guiding surface when said workbench moves forward and backward and said support member guarantees second guiding surface that this workbench moves smoothly.
are because the utilization of technique scheme; The utility model compared with prior art has advantage: realize the centre of pair of rollers leading screw or near the resiliency supported of position intermediate through elastic component; The bending and the deflection deformation of leading screw have been reduced or eliminated like this; Reduced of the influence of the positioning accuracy sum of errors of movable workbench, improved the positioning accuracy of machine tooling axle, and increased traveling comfort and security the workpiece machining accuracy.
Description of drawings
accompanying drawing 2 is the side-looking partial schematic sectional view of the utility model.
The specific embodiment
The structure of the utility model is further set forth in
below in conjunction with accompanying drawing.
referring to shown in Fig. 1-2, and on movable workbench formula planer-type milling machine, screw lead supporting device comprises lathe bed 1, workbench 2, leading screw 3, nut 6, motor 5, mount pad 7, support member 8, a pair roller 9, elastic component 10; The two ends of leading screw 3 all are arranged with bearing, and the bearing at leading screw 3 two ends all is arranged on the lathe bed 1 through bearing block 4, and leading screw 3 can rotate; The leading screw 3 of rotation drives through motor 5, and threaded engagement has nut 6 on the leading screw 3, and nut 6 fixes with workbench 2; Leading screw 3 rotations, nut 6 moves forward and backward along the length direction of leading screw 3, then realizes moving forward and backward of workbench 2; The length direction along continuous straight runs of leading screw 3 extends, and like Fig. 1, is fixed with mount pad 7 on the lathe bed 1; Can be provided with support member 8 up or down on the mount pad 7, the wheel axial line that a pair roller 9, one pair rollers 9 are housed on the support member 8 all extends along the length direction of leading screw 3; Between mount pad 7 and support member 8, be provided with elastic component 10, elastic component 10 can adopt helical spring, and this elastic component 10 can provide support the elastic-restoring force that part 8 makes progress; Make the wheel side face of the pair roller 9 on the support member 8 leading screw 3 of upwards conflicting; Like Fig. 1 and 2, a pair roller 9 all is positioned at the middle part of leading screw 3 or near under the pars intermedia bit position, this pair roller 9 is provided with before and after the length direction of leading screw 3 at interval; And on the vertical projection face of leading screw 3; Referring to Fig. 2, this pair roller 9 is symmetrical set according to the vertical center line of leading screw 3, and promptly this pair roller 9 can support leading screw 3 by left and right symmetrically.Carry out resiliency supported through the centre of 9 pairs of leading screws 3 of roller or near position intermediate; Can reduce or eliminate the bending and the deflection deformation of leading screw 3 like this; Thereby reduced the influence of positioning accuracy sum of errors that workbench 2 moves to the workpiece machining accuracy; Improve the positioning accuracy of machine tooling axle, and increase traveling comfort and security.
Mention above
, nut 6 can be with workbench 2 to move forward and backward along leading screw 3, in order to eliminate the obstruction that 9 pairs of workbench 2 of roller move; Perhaps the inconvenience (operation bidirectional roller 9 or mount pad 8 move to guarantee workbench 2 smoothly) in order to eliminate operation bidirectional is fixed with inclined board 11 on workbench 2, is fixed with declined board 12 on the support member 8; Referring to Fig. 1; The upper surface of these declivity 12 plate rear and front ends all has first guiding surface 13, and the lower surface of inclined board 11 rear and front ends all has second guiding surface 14 that matches with first guiding surface 13, is being with workbench 2 to move forward and backward at nut 6 like this; Come the middle part of leading screw 3 or during near the pars intermedia bit position; Second guiding surface 14 can press down first guiding surface 13, and the elastic resistance that makes support member 8 overcome elastic component 10 moves down, and is being with a pair roller 9 also to move down; Thereby guarantee that nut 6 and workbench 2 can move out the position that original roller 9 supports leading screw 3 automatically smoothly; After workbench 2 moved out the Support Position, second guiding surface 14 can break away from first guiding surface 13, under the elastic-restoring force effect of elastic component 10; Support member 8 is being with a pair roller 9 to rise, and realizes that a pair roller 9 supports leading screw 3 again.Strain through elastic component 10 realizes the resiliency supported to leading screw 3, reduces the bending and the deflection deformation of leading screw 3, has guaranteed the mobile accuracy and the stability of workbench 2.
according to the weight and the stroke of workbench 2, calculate the diameter and the length of the leading screw 3 that needs in practice; Thereby calculate the deflection deformation and the bending displacement amount of leading screw 3; Calculate the rigidity and the deflection of elastic component 10 again according to amount of bow and deflection deformation,, realize reducing or eliminating deflection deformation and the bending that leading screw causes according to the technical scheme of this patent; Reduce the crooked vibrations that produce of leading screw, guarantee the stability of lathe and the mobile accuracy of feed shaft.
Claims (2)
1. the screw lead supporting device on the movable workbench formula planer-type milling machine; Comprise lathe bed, can all be arranged on leading screw on the said lathe bed, can drive the nut that said leading screw motor rotating, threaded engagement fix on said leading screw and with said workbench at the workbench that moves on the said lathe bed, bearing that two ends all are arranged with bearing and two ends through bearing block; The length direction along continuous straight runs of said leading screw extends; It is characterized in that: said screw lead supporting device also comprises the mount pad that is fixed on the said lathe bed, can be arranged on support member on the said mount pad up or down, be contained on the said support member and at least one pair of roller that the wheel axial line all extends along the length direction of said leading screw, be arranged on the elastic-restoring force that can provide this support member to make progress between said support member and the said mount pad and make the wheel side face of the said roller residence of can upwards conflicting state the elastic component of leading screw; Said at least one pair of roller all is positioned at the middle part of said leading screw or near under the pars intermedia bit position; Paired said roller is provided with before and after the length direction of said leading screw at interval; And on the vertical projection face of said leading screw, said one-tenth pair roller is symmetrical set according to the vertical center line of said leading screw.
2. the screw lead supporting device on the movable workbench formula planer-type milling machine according to claim 1; It is characterized in that: be fixed with inclined board on the said workbench that fixes with said nut; Be fixed with declined board on the said support member; The upper surface of this declined board rear and front end all has first guiding surface, thereby the lower surface of said inclined board rear and front end all has to match with said first guiding surface to be used at said nut band and presses down this first guiding surface when said workbench moves forward and backward and said support member guarantees second guiding surface that this workbench moves smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220173934 CN202607252U (en) | 2012-04-23 | 2012-04-23 | Lead screw supporting device on worktable-movable type gantry milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220173934 CN202607252U (en) | 2012-04-23 | 2012-04-23 | Lead screw supporting device on worktable-movable type gantry milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202607252U true CN202607252U (en) | 2012-12-19 |
Family
ID=47340984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220173934 Expired - Fee Related CN202607252U (en) | 2012-04-23 | 2012-04-23 | Lead screw supporting device on worktable-movable type gantry milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202607252U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632399A (en) * | 2012-04-23 | 2012-08-15 | 苏州江源精密机械有限公司 | Screw rod supporting device on planer type milling machine with moving workbench |
| CN103692273A (en) * | 2013-12-10 | 2014-04-02 | 江门市奥斯龙机械有限公司 | Rotating mechanism of machining center |
-
2012
- 2012-04-23 CN CN 201220173934 patent/CN202607252U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632399A (en) * | 2012-04-23 | 2012-08-15 | 苏州江源精密机械有限公司 | Screw rod supporting device on planer type milling machine with moving workbench |
| CN103692273A (en) * | 2013-12-10 | 2014-04-02 | 江门市奥斯龙机械有限公司 | Rotating mechanism of machining center |
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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: 20121219 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model |