CN103223614A - Lathe and screw rod support device thereof - Google Patents
Lathe and screw rod support device thereof Download PDFInfo
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- CN103223614A CN103223614A CN2013101283183A CN201310128318A CN103223614A CN 103223614 A CN103223614 A CN 103223614A CN 2013101283183 A CN2013101283183 A CN 2013101283183A CN 201310128318 A CN201310128318 A CN 201310128318A CN 103223614 A CN103223614 A CN 103223614A
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- screw rod
- pedestal
- nut
- lathe
- support wheel
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Abstract
A lathe comprises a base, a motor mounted on the base, a screw rod connected with the motor, a nut connected with the screw rod and a workbench connected with the nut, and a screw rod support device arranged at the bottom of the screw rod as well, wherein the screw rod support device comprises a pedestal, supporting wheels and a pinch roller all mounted on the base, springs mounted between the pedestal and the base, a pressing block mounted at the bottom of the workbench and positioned on one side of the nut; the springs push the pedestal upwards to drive the supporting wheels to support the screw rod; when the nut rotates with the screw rod to move close to the screw rod support device, the pressing block squeezes the pinch roller to drive the pedestal and the supporting wheels to move downwards, so that the springs are pressed to shrink and deform, and the nut passes through the upper part of the pedestal and the supporting wheels; and when the pinch roller is not squeezed by the pressing block, the springs push the pedestal upwards to drive the supporting wheels to support the screw rod.
Description
Technical field
The present invention relates to a kind of process equipment, relate in particular to a kind of lathe and screw rod bracing or strutting arrangement thereof.
Background technology
In the machining equipments such as existing Digit Control Machine Tool, machining center, the most motors that adopt of each feed motion axle use screw rod as the power executive component as the driving source parts.General lathe all has the screw rod of horizontal direction, as X-axis screw rod or Y-axis screw rod.Because design needs, the screw rod that has is very long, only depends on two ends often to accept because its deadweight makes screw rod be badly deformed, thereby causes machining accuracy to descend even screw failure.The high lathe of this corresponding required precision is unallowed.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of lathe and this screw rod bracing or strutting arrangement with screw rod bracing or strutting arrangement.
A kind of lathe, comprise a base, be installed in motor on the base, connect this motor screw rod, connect this screw rod nut, and connect the workbench of this nut, this lathe comprises that also one is arranged on the screw rod bracing or strutting arrangement of screw rod bottom, this screw rod bracing or strutting arrangement comprises a pedestal, be installed in support wheel and pinch roller on this pedestal, be installed in the spring between this pedestal and the described base and be installed in the briquetting that the workbench bottom is positioned at described nut one side, and described spring upwards promotes this pedestal and drives support wheel and support described screw rod; When this nut moved near this screw rod bracing or strutting arrangement with the screw rod rotation, described briquetting pushed described pinch roller and moves down to drive pedestal and support wheel, the contraction distortion of described spring pressurized, and described nut passes through above this pedestal and support wheel; After this pinch roller broke away from the briquetting extruding, described spring upwards promoted pedestal and supports described screw rod to drive support wheel.
Further, the quantity of described support wheel is two, and this two support wheel supports the two bottom sides of described screw rod respectively, and the center of rotation direction of each support wheel is identical with the axis direction of described screw rod.
Further, described briquetting exceeds axial front end face, the rear end face of described nut along described screw rod respectively along axial front end face, the rear end face of described screw rod.
Further, the bottom surface of described this briquetting is smooth setting, and the junction of this bottom surface and front and back sides is equipped with slick and sly spigot surface.
Further, the axis direction of described pinch roller is vertical with the axis direction of described screw rod.
Further, the quantity of described spring is two, and this two spring lays respectively at the both sides of described screw rod, wherein a spring be arranged on described pinch roller under.
Further, described screw rod bracing or strutting arrangement also comprises two guide posts, and each guide post runs through described pedestal, and the bottom of each guide post is fixed on the described base, and the top is provided with adjusting nut to regulate the height of described pedestal.
Further, described two guide posts are arranged on the relative both sides with described pinch roller.
A kind of screw rod bracing or strutting arrangement, be used for a lathe, this lathe comprises a base, be installed in motor on the base, connect this motor screw rod, connect this screw rod nut, and connect the workbench of this nut, this screw rod bracing or strutting arrangement comprises a pedestal, be articulated in two support wheels and a pinch roller on this pedestal, be installed in two springs between this pedestal and the described base, and the briquetting of described nut one side is installed, and described two springs upwards promote this pedestal and drive the two bottom sides that described support wheel supports described screw rod; Described briquetting exceeds axial front end face, the rear end face of described nut along described screw rod respectively along axial front end face, the rear end face of described screw rod; When this nut moved near this screw rod bracing or strutting arrangement with the screw rod rotation, described briquetting pushed this pinch roller downwards and moves down to drive pedestal and support wheel, passes through above this pedestal and support wheel to protect described nut.
Further, the bottom surface of described this briquetting is smooth setting, and the junction of this bottom surface and front and back sides is equipped with slick and sly spigot surface.
Compared with prior art, lathe of the present invention supports screw rod by this screw rod bracing or strutting arrangement, has avoided screw rod to influence precision because of deadweight flexural deformation, can realize changing automatically the position simultaneously and allow described nut pass through smoothly.
Description of drawings
Fig. 1 is the structural representation of lathe of the present invention.
Fig. 2 is the enlarged drawing of circle A part among Fig. 1.
Fig. 3 is the cutaway view of Fig. 1 along the III-III line.
Fig. 4 is the enlarged drawing of circle B part among Fig. 3.
Fig. 5 is the side view of briquetting of the screw rod bracing or strutting arrangement of lathe among Fig. 1.
The specific embodiment
For technical scheme of the present invention can more clearly be showed, the invention will be further described below in conjunction with accompanying drawing.
As shown in Figures 1 and 2, be the lathe 100 of a preferred embodiment of the present invention, this lathe 100 is Digit Control Machine Tool in the present embodiment.This lathe 100 comprises a base 10 and workbench 20.This base 10 is equipped with the screw rod 30 that drive motors (figure mark) and an end connect this drive motors, and an other end of this screw rod 30 is fixed on the base 10 by a bearing block (scheming not show).The bottom of described workbench 20 is fixed with a nut 40 that is installed on the described screw rod 30, and drive nut 40 moved forward and backward with the axis direction of drive workbench 20 along screw rod 30 when described screw rod 30 rotated.Also be provided with a screw rod bracing or strutting arrangement 50 on this base 10, the described screw rod 30 of these screw rod bracing or strutting arrangement 50 resiliency supported.This screw rod bracing or strutting arrangement 50 comprises the briquetting 90 that is installed in nut 40 1 sides, and when screw rod 30 drive nuts 40 moved near this screw rod bracing or strutting arrangement 50, described briquetting 90 pressed down screw rod bracing or strutting arrangement 50 to allow this nut 40 pass through smoothly; When nut 40 and briquetting 90 by behind these screw rod bracing or strutting arrangement 50 tops, these screw rod bracing or strutting arrangement 50 elasticity are gone up and studdle 30 again.
See also Fig. 3 and Fig. 4, this screw rod bracing or strutting arrangement 50 also comprises a pedestal 51, be installed in two support wheels 52 and pinch roller 53 on the pedestal 51, be installed in the spring 54 between pedestal 51 and the base 10 and be fixed on the base 10 and wear the guide post 55 of this pedestal 51.
Described pedestal 51 is block and is provided with, and these pedestal 51 1 sidepiece upper surfaces are provided with groove 512 and to accommodate described support wheel 52 are installed.This bottom surface, pedestal 51 both ends is provided with two holddown grooves, the 514 a pair of tops that should accommodate described spring 54, and each holddown groove 514 is circular blind hole in the present embodiment.One end of these pedestal 51 corresponding described briquettings 90 is provided with two perforation 515, wears for described guide post 55.
Each support wheel 52 is articulated on the pedestal 51 by a dead axle 520.Articulate by a bearing (figure is mark not) between this support wheel 52 and this dead axle 520.The axis direction of each dead axle 520 is identical with the axis direction of screw rod 30.Described two support wheels 52 support the two bottom sides of described screw rod 30 respectively, when screw rod 30 rotates, rotate with screw rod 30 when this support wheel 52 supports this screw rod 30, have greatly reduced the friction of 52 pairs of screw rods 30 of support wheel.
Described pinch roller 53 is arranged on the pedestal 51 an other end relative with support wheel 52.This pinch roller 53 is fixed on the pedestal 51 by a fixed axis 530 and a bearing block 531.In the present embodiment, this pinch roller 53 is a needle bearing.The axis direction of this pinch roller 53 is vertical with the axis direction of described screw rod 30.
Each spring 54 1 end is housed in the holddown groove 514 of pedestal 51, and the other end is housed in the base 10.In the present embodiment, these base 10 corresponding each springs 54 are equipped with a sleeve pipe 11, and are provided with sealing ring 110 between sleeve pipe 11 and base 10.The both sides of the corresponding described screw rod 30 in the position of described two springs 54, wherein a spring 54 is under described pinch roller 53.
The bottom of each guide post 55 is fixed on the base 10 by screw, and shank portion is located in the perforation 515 of pedestal 51 by a copper sheathing 56.The top of guide post 55 length is provided with screw thread for one section, and an adjusting nut 57 is installed, and this adjusting nut 57 can play when preventing that guide post 55 from missing the target, and also can press down the support force that pedestal 51 plays 50 pairs of screw rods 30 of the whole screw rod bracing or strutting arrangement of fine setting.In the present embodiment, described two guide posts 55 be arranged on pinch roller 53 near both sides, can select other position in other embodiments, for example be arranged on the both sides of screw rod 30 or the outside of each spring 54.In addition, described spring 54 also can be set on the guide post 55.In other were implemented, if spring 54 hardness are enough, the stroke of perhaps described pedestal 51 is little then can to omit described guide post 55.
See also Fig. 5, described briquetting 90 is tabular setting, and its top is fixed on the workbench 20 by screw.This briquetting 90 is arranged side by side with nut 40, and the front-back of this briquetting 90 all exceeds the front/rear end of described nut 40, promptly this briquetting 90 along the axial length of screw rod 30 greater than the axial length of described nut 40 along screw rod 30.The width of these briquetting 90 width and pinch roller 53 is roughly the same.The bottom surface of this briquetting 90 is smooth setting, and the junction of the vertical side in bottom surface and front and back is provided with slick and sly spigot surface 91, seamlessly transits from the side and between the bottom surface when contacting with described pinch roller 53 with correspondence.
During these lathe 100 work, described motor-driven screw rod 30 rotates, and this screw rod 30 rotates by these nut 40 push work platform 20 axially moving forward and backward along screw rod 30.When briquetting 90 and nut 40 were separated by screw rod bracing or strutting arrangement 50 1 segment distances, this screw rod bracing or strutting arrangement 50 supported by spring 54 and 52 pairs of screw rods 30 of support wheel, has effectively avoided screw rod 30 because of the flexural deformation that deadweight causes, and has guaranteed the precision of screw rod 30.When nut 40 ran to soon near screw rod bracing or strutting arrangement 50 with screw rod 30, the side of described briquetting 90 at first touched pinch roller 53, screw rod bracing or strutting arrangement 50 is depressed to gradually the bottom surface of briquetting 90 by the spigot surface 91 of briquetting 90; This moment, spring 54 receipts compressive strains were shunk, pedestal 51 moves down along guide post 55, drives support wheel 52 and breaks away from screw rod 30 downwards, is lower than described nut 40 fully until support wheel 52, make whole screw rod bracing or strutting arrangement 50 avoid nut 40 automatically, back and forth pass through smoothly for nut 40.When briquetting 90 and nut 40 by behind the top of whole screw rod bracing or strutting arrangement 50, described briquetting 90 has been removed the extruding to pinch roller 53, spring 54 promotes pedestals 51 and support wheel 52 upwards supports screw rod 30, thereby returns to the holding state to screw rod 30.
Be appreciated that ground, the quantity of described screw rod bracing or strutting arrangement 50 is not limited to one, can also be two or more, formulates according to length, weight and the accuracy needs of screw rod 30.When the quantity of screw rod bracing or strutting arrangement 50 had only one, this screw rod bracing or strutting arrangement 50 was used to support the medium position of this screw rod 30; When the quantity of screw rod bracing or strutting arrangement 50 is two or during greater than two, described screw rod bracing or strutting arrangement 50 evenly is arranged on the weight of the below of screw rod 30 with this screw rod 30 of reasonable support.
Be appreciated that ground, described in other embodiments bearing block 531 can save, be that pinch roller 53 also can directly be articulated on the pedestal 51, when only needing to guarantee that described briquetting 90 is pressed in these pinch roller 53 tops, the position that described pedestal 51 and support wheel 52 descend is enough to avoid described nut 40 and gets final product.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. lathe, comprise a base, be installed in motor on the base, connect this motor screw rod, connect this screw rod nut, and connect the workbench of this nut, it is characterized in that: this lathe comprises that also one is arranged on the screw rod bracing or strutting arrangement of screw rod bottom, this screw rod bracing or strutting arrangement comprises a pedestal, be installed in support wheel and pinch roller on this pedestal, be installed in the spring between this pedestal and the described base and be installed in the workbench bottom and be positioned at the briquetting of described nut one side, and described spring upwards promotes this pedestal and drives support wheel and support described screw rod; When this nut moved near this screw rod bracing or strutting arrangement with the screw rod rotation, described briquetting pushed described pinch roller and moves down to drive pedestal and support wheel, the contraction distortion of described spring pressurized, and described nut passes through above this pedestal and support wheel; After this pinch roller broke away from the briquetting extruding, described spring upwards promoted pedestal to drive the state that support wheel recovers to support described screw rod.
2. lathe as claimed in claim 1 is characterized in that: the quantity of described support wheel is two, and this two support wheel supports the two bottom sides of described screw rod respectively, and the center of rotation direction of each support wheel is identical with the axis direction of described screw rod.
3. lathe as claimed in claim 1 is characterized in that: described briquetting exceeds axial front end face, the rear end face of described nut along described screw rod respectively along axial front end face, the rear end face of described screw rod.
4. lathe as claimed in claim 3 is characterized in that: the bottom surface of described this briquetting is smooth setting, and the junction of this bottom surface and front and back sides is equipped with slick and sly spigot surface.
5. lathe as claimed in claim 1 is characterized in that: the axis direction of described pinch roller is vertical with the axis direction of described screw rod.
6. lathe as claimed in claim 1 is characterized in that: the quantity of described spring is two, and this two spring lays respectively at the both sides of described screw rod, wherein a spring be arranged on described pinch roller under.
7. lathe as claimed in claim 1, it is characterized in that: described screw rod bracing or strutting arrangement also comprises two guide posts, each guide post runs through described pedestal, and the bottom of each guide post is fixed on the described base, and the top is provided with adjusting nut to regulate the height of described pedestal.
8. lathe as claimed in claim 7 is characterized in that: described two guide posts are arranged on the relative both sides with described pinch roller.
9. screw rod bracing or strutting arrangement, be used for a lathe, this lathe comprises a base, be installed in motor on the base, connect this motor screw rod, connect this screw rod nut, and connect the workbench of this nut, it is characterized in that: this screw rod bracing or strutting arrangement comprises a pedestal, be articulated in two support wheels and a pinch roller on this pedestal, be installed in two springs between this pedestal and the described base, and the briquetting of described nut one side is installed, and described two springs upwards promote this pedestal and drive the two bottom sides that described support wheel supports described screw rod; Described briquetting exceeds axial front end face, the rear end face of described nut along described screw rod respectively along axial front end face, the rear end face of described screw rod; When this nut moved near this screw rod bracing or strutting arrangement with the screw rod rotation, described briquetting pushed this pinch roller downwards and moves down to drive pedestal and support wheel, passes through above this pedestal and support wheel to protect described nut.
10. screw rod bracing or strutting arrangement as claimed in claim 9 is characterized in that: the bottom surface of described this briquetting is smooth setting, and the junction of this bottom surface and front and back sides is equipped with slick and sly spigot surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101283183A CN103223614A (en) | 2013-04-15 | 2013-04-15 | Lathe and screw rod support device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101283183A CN103223614A (en) | 2013-04-15 | 2013-04-15 | Lathe and screw rod support device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103223614A true CN103223614A (en) | 2013-07-31 |
Family
ID=48834378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101283183A Pending CN103223614A (en) | 2013-04-15 | 2013-04-15 | Lathe and screw rod support device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103223614A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310015A (en) * | 1969-05-27 | 1973-03-14 | Colchester Lathe Co | Lathes having shaft supports |
| JPS6186104A (en) * | 1984-10-04 | 1986-05-01 | Citizen Watch Co Ltd | Automatic lathe |
| CN201795013U (en) * | 2010-04-22 | 2011-04-13 | 泉州佳泰数控有限公司 | Support device for horizontal lead screw |
| CN201807932U (en) * | 2010-09-06 | 2011-04-27 | 宁波天瑞精工机械有限公司 | Machine lead screw supporting device |
| CN203236276U (en) * | 2013-04-15 | 2013-10-16 | 东莞市润星机械科技有限公司 | Machine tool and screw supporting apparatus thereof |
-
2013
- 2013-04-15 CN CN2013101283183A patent/CN103223614A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310015A (en) * | 1969-05-27 | 1973-03-14 | Colchester Lathe Co | Lathes having shaft supports |
| JPS6186104A (en) * | 1984-10-04 | 1986-05-01 | Citizen Watch Co Ltd | Automatic lathe |
| CN201795013U (en) * | 2010-04-22 | 2011-04-13 | 泉州佳泰数控有限公司 | Support device for horizontal lead screw |
| CN201807932U (en) * | 2010-09-06 | 2011-04-27 | 宁波天瑞精工机械有限公司 | Machine lead screw supporting device |
| CN203236276U (en) * | 2013-04-15 | 2013-10-16 | 东莞市润星机械科技有限公司 | Machine tool and screw supporting apparatus thereof |
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Application publication date: 20130731 |