CN203817871U - Intermediate screw rod supporting mechanism in machine tool - Google Patents
Intermediate screw rod supporting mechanism in machine tool Download PDFInfo
- Publication number
- CN203817871U CN203817871U CN201420110046.4U CN201420110046U CN203817871U CN 203817871 U CN203817871 U CN 203817871U CN 201420110046 U CN201420110046 U CN 201420110046U CN 203817871 U CN203817871 U CN 203817871U
- Authority
- CN
- China
- Prior art keywords
- support bar
- screw mandrel
- screw rod
- machine tool
- nut seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an intermediate screw rod supporting mechanism in a machine tool. The intermediate screw rod supporting mechanism comprises a machine tool stand, a screw rod, a nut and a nut seat, wherein the nut is arranged in the nut seat and sleeves the screw rod; a guide rail is fixedly arranged in the machine tool stand, is positioned below the screw rod and is parallel to the screw rod; a supporting rod is fixedly connected with the lower side of the nut seat; a roller is connected with the lower end of the supporting rod through a supporting shaft; the lower part of the roller is positioned in the guide rail. When the nut seat linearly moves, the roller at the lower end of the supporting rod on the lower side of the nut seat moves in a track parallel to the screw rod, and the supporting rod supports the nut seat in the whole process to prevent the screw rod from hanging down at a random suspended position; when elastic elements are included in the supporting rod, vibration generated in the working process of the machine tool can be absorbed. The intermediate screw rod supporting mechanism is simple in structure and reliable in performance.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to lathe, particularly the lead screw transmission mechanism in lathe, specifically the screw mandrel medial support mechanisms in a kind of lathe.
Background technology:
In lathe, utilize lead screw transmission mechanism that the circular motion of dynamical element is converted into rectilinear motion.When screw mandrel rotates, the nut being arranged on screw mandrel is done rectilinear motion.In the situation that screw mandrel length is larger, nut can make the middle part of screw mandrel hanging part sagging, affects linearity and the concentricity of screw mandrel, and affects the machining accuracy of lathe.Sagging in order to prevent the middle part hanging part of screw mandrel, the applicant has proposed the screw regulating mechanism in a kind of lathe in CN201604024 Chinese patent, screw regulating mechanism in this lathe is fixedly connected with guide holder below nut, on lathe, be fixedly installed a base, two support bars are set in base, the upper end of support bar arranges one and supports collision block, supports on the support bar between collision block and base and is arranged with spring.Utilize spring and support collision block and support moving to the guide holder at screw mandrel middle part.This structure is comparatively complicated, and guide holder is touching between support collision block and can not being supported, and prevents that the sagging effect of screw mandrel hanging part is limited.
Summary of the invention:
The purpose of this utility model is to provide the medial support mechanisms of the screw mandrel in a kind of lathe, and the screw mandrel medial support mechanisms in described this lathe will solve in prior art screw mandrel sagging prevention device complex structure in lathe, act on limited technical problem.
Screw mandrel medial support mechanisms in this lathe of the present utility model, comprise machine tool frame, screw mandrel, nut and nut seat, described nut is arranged in described nut seat, nut sleeve is located on described screw mandrel, the two ends of screw mandrel are connected with machine tool frame by bearings mechanism respectively, wherein, in described machine tool frame, be fixedly installed a guide rail, described guide rail is positioned at the below of described screw mandrel, and be parallel to screw mandrel, the downside of described nut seat is fixedly connected with a support bar, the lower end of described support bar is connected with a roller by back shaft, the bottom of described roller is arranged in guide rail.
Further, described support bar comprises a upper support bar and a lower support bar, between described upper support bar and lower support bar, be connected with a spring, the lower end periphery of upper support bar or the upper end periphery of lower support bar are arranged with a sleeve, and described spring is positioned at described sleeve.
Operation principle of the present utility model is: when nut seat is done rectilinear motion, the roller of the support bar lower end of its downside moves in being parallel to the track of screw mandrel, and support bar whole process gives nut seat and supports, and prevents sagging in overhead positions arbitrarily of screw mandrel.When support bar comprises flexible member, the vibrations in the time of can absorbing lathe work.
The utility model and prior art are compared, and its effect is actively with obvious.The utility model is fixedly installed a guide rail that is parallel to screw mandrel in machine tool frame, downside at nut seat is fixedly connected with a support bar, the lower end of support bar arranges roller, roller is walked in guide rail, when nut seat is done rectilinear motion, the roller of the support bar lower end of its downside moves in being parallel to the track of screw mandrel, and support bar whole process gives nut seat and supports, and prevents sagging in overhead positions arbitrarily of screw mandrel.The utility model is simple in structure, dependable performance.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the screw mandrel medial support mechanisms in lathe of the present utility model.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, screw mandrel medial support mechanisms in lathe of the present utility model, comprise machine tool frame 1, screw mandrel 2, nut and nut seat 3, described nut is arranged in described nut seat 3, nut sleeve is located on described screw mandrel 2, the two ends of screw mandrel 2 are connected with machine tool frame 1 with bearings mechanism 5 by bearings mechanism 4 respectively, the two ends of screw mandrel are connected with power input mechanism 6, wherein, in described machine tool frame 1, be fixedly installed a guide rail 7, described guide rail 7 is positioned at the below of described screw mandrel 2, and be parallel to screw mandrel 2, the downside of described nut seat 3 is fixedly connected with a support bar 8, the lower end of described support bar 8 is connected with a roller 9 by back shaft, the bottom of described roller 9 is arranged in guide rail 7.
Further, described support bar 8 comprises a upper support bar (not shown) and a lower support bar (not shown), between described upper support bar and lower support bar, be connected with a spring (not shown), the lower end periphery of upper support bar or the upper end periphery of lower support bar are arranged with a sleeve (not shown), and described spring is positioned at described sleeve.
The operation principle of the present embodiment is: when nut seat 3 is done rectilinear motion, the roller 9 of support bar 8 lower ends of its downside moves in the track that is parallel to screw mandrel 2, and support bar 8 whole process give nut seat 3 and support, and prevents sagging in overhead positions arbitrarily of screw mandrel 2.When support bar 8 comprises flexible member, the vibrations in the time of can absorbing lathe work.
Claims (2)
1. the screw mandrel medial support mechanisms in a lathe, comprise machine tool frame, screw mandrel, nut and nut seat, described nut is arranged in described nut seat, nut sleeve is located on described screw mandrel, the two ends of screw mandrel are connected with machine tool frame by bearings mechanism respectively, it is characterized in that: in described machine tool frame, be fixedly installed a guide rail, described guide rail is positioned at the below of described screw mandrel, and be parallel to screw mandrel, the downside of described nut seat is fixedly connected with a support bar, the lower end of described support bar is connected with a roller by back shaft, the bottom of described roller is arranged in guide rail.
2. the screw mandrel medial support mechanisms in lathe as claimed in claim 1, it is characterized in that: described support bar comprises a upper support bar and a lower support bar, between described upper support bar and lower support bar, be connected with a spring, the lower end periphery of upper support bar or the upper end periphery of lower support bar are arranged with a sleeve, and described spring is positioned at described sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110046.4U CN203817871U (en) | 2014-03-12 | 2014-03-12 | Intermediate screw rod supporting mechanism in machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110046.4U CN203817871U (en) | 2014-03-12 | 2014-03-12 | Intermediate screw rod supporting mechanism in machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203817871U true CN203817871U (en) | 2014-09-10 |
Family
ID=51473414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420110046.4U Expired - Fee Related CN203817871U (en) | 2014-03-12 | 2014-03-12 | Intermediate screw rod supporting mechanism in machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203817871U (en) |
-
2014
- 2014-03-12 CN CN201420110046.4U patent/CN203817871U/en not_active Expired - Fee Related
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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: 20140910 Termination date: 20180312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |