CN203236276U - Machine tool and screw supporting apparatus thereof - Google Patents
Machine tool and screw supporting apparatus thereof Download PDFInfo
- Publication number
- CN203236276U CN203236276U CN 201320185580 CN201320185580U CN203236276U CN 203236276 U CN203236276 U CN 203236276U CN 201320185580 CN201320185580 CN 201320185580 CN 201320185580 U CN201320185580 U CN 201320185580U CN 203236276 U CN203236276 U CN 203236276U
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- screw rod
- pedestal
- nut
- screw
- base
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Abstract
The utility model provides a machine tool, which comprises a base, a motor installed on the base, a nut connected with the screw, a workbench connected with the nut, and a screw supporting apparatus arranged at the bottom of the screw. The screw supporting apparatus comprises a base, a supporting wheel and a pinch roller both arranged on the base, a spring arranged between the base and a pedestal, and a pressing block arranged at the bottom of the workbench and positioned closer to the nut side. The spring pushes the base upwards to drive the supporting wheel to support the screw. When the nut is rotated along with the screw to move towards the screw supporting apparatus, the pressing block extrudes the pinch roller to drive the base and the supporting wheel to move downwards. In this way, the spring is compressed to contract and deform and the nut passes by above the base and the supporting wheel. When the pinch roller is no longer extruded by the pressing block, the spring pushes the base upwards to drive the supporting wheel to support the screw.
Description
Technical field
The utility model relates to a kind of process equipment, relates in particular to a kind of lathe and screw support device 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, such as X-axis screw rod or Y-axis screw rod.Because design needs, the screw rod that has is very long, only depend on two ends often accept because its deadweight so that screw rod be badly deformed, thereby cause machining accuracy to descend even screw failure.The high lathe of this corresponding required precision is unallowed.
The utility model content
Therefore, the purpose of this utility model is to provide a kind of lathe and this screw support device with screw support device.
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 support device of screw rod bottom, this screw support device 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 support device with bolt rotary, 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 respectively the two bottom sides of described screw rod, and the center of rotation direction of each support wheel is identical with the axis direction of described screw rod.
Further, described briquetting exceeds respectively described nut along axial front end face, the rear end face of described screw rod 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 round and smooth 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 support device 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 support device, 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 support device 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 respectively described nut along axial front end face, the rear end face of described screw rod along axial front end face, the rear end face of described screw rod; When this nut moved near this screw support device with bolt rotary, 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 round and smooth spigot surface.
Compared with prior art, lathe of the present utility model supports screw rod by this screw support device, has avoided screw rod to affect precision because of deadweight flexural deformation, can realize automatically changing the position simultaneously and allow described nut pass through smoothly.
Description of drawings
Fig. 1 is the structural representation of lathe of the present utility model.
Fig. 2 is the enlarged drawing of circle A part among Fig. 1.
Fig. 3 is that Fig. 1 is along the cutaway view of III-III line.
Fig. 4 is the enlarged drawing of circle B part among Fig. 3.
Fig. 5 is the side view of the briquetting of the screw support device of lathe among Fig. 1.
The specific embodiment
For the technical solution of the utility model can more clearly be showed, the utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figures 1 and 2, be the lathe 100 of the utility model one preferred embodiment, 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 (not shown).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 support device 50 on this base 10, the described screw rod 30 of these screw support device 50 resiliency supported.This screw support device 50 comprises the briquetting 90 that is installed in nut 40 1 sides, and when close this screw support device 50 of screw rod 30 drive nuts, 40 operations, described briquetting 90 presses down to allow this nut 40 pass through smoothly screw support device 50; When nut 40 and briquetting 90 by behind these screw support device 50 tops, these screw support device 50 elasticity are gone up and studdle 30 again.
See also Fig. 3 and Fig. 4, this screw support device 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 arranges, 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 respectively the two bottom sides of described screw rod 30, 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 screwed on the base 10, and shank portion is located in the perforation 515 of pedestal 51 by a copper sheathing 56.The top of guide post 55 is grown one section and is provided with screw thread, 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 support device of fine setting.In the present embodiment, described two guide posts 55 be arranged on pinch roller 53 near both sides, can select in other embodiments other position, 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, perhaps the stroke of described pedestal 51 is little then can omit described guide post 55.
See also Fig. 5, described briquetting 90 is tabular setting, and its top is screwed on the workbench 20.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, namely 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 round and smooth spigot surface 91, seamlessly transits from the side and between the bottom surface when contacting with described pinch roller 53 with correspondence.
During this 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 support device 50 1 segment distance, this screw support device 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 fast close screw support device 50 with screw rod 30, the side of described briquetting 90 at first touched pinch roller 53, screw support device 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, until support wheel 52 is lower than described nut 40 fully, so that whole screw support device 50 is avoided 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 support device 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 support device 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 support device 50 only had one, this screw support device 50 was used for supporting the medium position of this screw rod 30; When the quantity of screw support device 50 is two or during greater than two, described screw support device 50 evenly is arranged on the below of screw rod 30 with the weight of this screw rod 30 of reasonable support.
Be appreciated that ground, described bearing block 531 can save in other embodiments, 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 this pinch roller 53 top, 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 a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent 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 support device of screw rod bottom, this screw support device 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 support device with bolt rotary, 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 recovers to support described screw rod to drive support wheel state.
2. lathe as claimed in claim 1, it is characterized in that: the quantity of described support wheel is two, and this two support wheel supports respectively the two bottom sides of described screw rod, 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, it is characterized in that: described briquetting exceeds respectively described nut along axial front end face, the rear end face of described screw rod along axial front end face, the rear end face of described screw rod.
4. lathe as claimed in claim 3, it 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 round and smooth spigot surface.
5. lathe as claimed in claim 1, it 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, it 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 support device 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, it is characterized in that: described two guide posts are arranged on the relative both sides with described pinch roller.
9. screw support device, 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 support device 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 respectively described nut along axial front end face, the rear end face of described screw rod along axial front end face, the rear end face of described screw rod; When this nut moved near this screw support device with bolt rotary, 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 support device as claimed in claim 9, it 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 round and smooth spigot surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185580 CN203236276U (en) | 2013-04-15 | 2013-04-15 | Machine tool and screw supporting apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185580 CN203236276U (en) | 2013-04-15 | 2013-04-15 | Machine tool and screw supporting apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203236276U true CN203236276U (en) | 2013-10-16 |
Family
ID=49313606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320185580 Expired - Lifetime CN203236276U (en) | 2013-04-15 | 2013-04-15 | Machine tool and screw supporting apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203236276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223614A (en) * | 2013-04-15 | 2013-07-31 | 东莞市润星机械科技有限公司 | Lathe and screw rod support device thereof |
-
2013
- 2013-04-15 CN CN 201320185580 patent/CN203236276U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223614A (en) * | 2013-04-15 | 2013-07-31 | 东莞市润星机械科技有限公司 | Lathe and screw rod support device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523000 Guangdong Province, Dongguan City Industrial Zone Patentee after: GUANGDONG HARVEST STAR TECHNOLOGY Co.,Ltd. Address before: 523000 Guangdong Province, Dongguan City Industrial Zone Patentee before: HARVEST STAR MECHANICAL TECHNOLOGY CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 523000 Guangdong Province, Dongguan City Industrial Zone Patentee after: GUANGDONG HARVEST STAR TECHNOLOGY CO.,LTD. Address before: 523000 Guangdong Province, Dongguan City Industrial Zone Patentee before: GUANGDONG HARVEST STAR TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
|
| CX01 | Expiry of patent term |