CN103846728A - Screw middle supporting mechanism in machine tool - Google Patents
Screw middle supporting mechanism in machine tool Download PDFInfo
- Publication number
- CN103846728A CN103846728A CN201410088920.3A CN201410088920A CN103846728A CN 103846728 A CN103846728 A CN 103846728A CN 201410088920 A CN201410088920 A CN 201410088920A CN 103846728 A CN103846728 A CN 103846728A
- Authority
- CN
- China
- Prior art keywords
- support bar
- screw mandrel
- machine tool
- nut seat
- nut
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
Abstract
The invention discloses a screw middle supporting mechanism in a machine tool. The screw middle supporting mechanism comprises a machine tool stander, a screw rod, a nut and a nut seat, wherein the nut is arranged in the nut seat and is sleeved on the screw rod; a guide rail is fixedly arranged in the machine tool stander, is positioned below the screw rod and is parallel to the screw rod; the lower side of the nut seat is fixedly connected with a supporting rod; the lower end of the supporting rod is connected with a roller through a supporting shaft; the lower part of the roller is positioned in the guide rail. When the nut seat does linear motion, the roller at the lower end of the supporting rod on the lower side of the nut seat moves in the rail parallel to the screw rod; the supporting rod supports the nut seat in the whole process, so that dropping down of the screw rod at any suspended position is prevented; the supporting rod comprises an elastic element, so that vibration caused in working of the machine tool can be absorbed. The screw middle supporting mechanism in the machine tool is simple in structure and reliable in performance.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to lathe, the particularly 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 does 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 the guide holder that moves to screw mandrel middle part is supported.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 object of the present invention is to provide the screw mandrel medial support mechanisms in a kind of lathe, 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 invention, 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 invention is: when nut seat does rectilinear motion, the roller of the support bar lower end of its downside moves in the track that is parallel to screw mandrel, and support bar whole process gives nut seat and supports, and prevents sagging in any overhead positions of screw mandrel.When support bar comprises flexible member, the vibrations can absorb lathe work time.
The present invention and prior art are compared, and its effect is actively with obvious.The present invention is fixedly installed a guide rail that is parallel to screw mandrel in machine tool frame, be fixedly connected with a support bar at the downside of nut seat, the lower end of support bar arranges roller, roller is walked in guide rail, when nut seat does rectilinear motion, the roller of the support bar lower end of its downside moves in the track that is parallel to screw mandrel, and support bar whole process gives nut seat and supports, and prevents sagging in any overhead positions of screw mandrel.The present invention is simple in structure, dependable performance.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the screw mandrel medial support mechanisms in a kind of lathe of the present invention.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, screw mandrel medial support mechanisms in a kind of lathe of the present invention, 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 does 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 any overhead positions of screw mandrel 2.When support bar 8 comprises flexible member, the vibrations can absorb lathe work time.
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 a kind of 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 |
|---|---|---|---|
| CN201410088920.3A CN103846728A (en) | 2014-03-12 | 2014-03-12 | Screw middle supporting mechanism in machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410088920.3A CN103846728A (en) | 2014-03-12 | 2014-03-12 | Screw middle supporting mechanism in machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103846728A true CN103846728A (en) | 2014-06-11 |
Family
ID=50855102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410088920.3A Pending CN103846728A (en) | 2014-03-12 | 2014-03-12 | Screw middle supporting mechanism in machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103846728A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511782A (en) * | 2014-12-19 | 2015-04-15 | 昆山华都精工机械设备有限公司 | Gantry lead screw mechanism |
| CN107081632A (en) * | 2017-04-26 | 2017-08-22 | 广西大学 | A kind of compensation mechanism applied to milling-boring machine gravity of ram off-load |
-
2014
- 2014-03-12 CN CN201410088920.3A patent/CN103846728A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511782A (en) * | 2014-12-19 | 2015-04-15 | 昆山华都精工机械设备有限公司 | Gantry lead screw mechanism |
| CN107081632A (en) * | 2017-04-26 | 2017-08-22 | 广西大学 | A kind of compensation mechanism applied to milling-boring machine gravity of ram off-load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |