CN203641419U - Improved screw rod component - Google Patents
Improved screw rod component Download PDFInfo
- Publication number
- CN203641419U CN203641419U CN201320675661.5U CN201320675661U CN203641419U CN 203641419 U CN203641419 U CN 203641419U CN 201320675661 U CN201320675661 U CN 201320675661U CN 203641419 U CN203641419 U CN 203641419U
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- CN
- China
- Prior art keywords
- section
- nut
- screw mandrel
- rod section
- position block
- 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
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Abstract
The utility model discloses an improved screw rod component. A screw rod comprises an upper straight rod section, a middle screw rod section and a lower straight rod section, wherein an external thread is arranged on the outer peripheral wall of the middle screw rod section; a nut is sleeved on the middle screw rod section; the external thread is meshed with an internal thread of the nut; an upper limiting block is sleeved on the upper straight rod section; a lower limiting block is sleeved on the lower straight rod section; the upper limiting block is provided with an upper locking hole; an upper locking screw is screwed in the upper locking hole, and is propped against the upper straight rod section; the lower limiting block is provided with a lower locking hole; a lower locking screw is screwed in the lower locking hole, and is propped against the lower straight rod section; the upper limiting block is locked on the upper straight rod section through the upper locking screw; the lower limiting block is locked on the lower straight rod section through the lower locking screw; the nut is propped against the upper limiting block when upwards moving to a limit position, and is propped against the lower limiting block when downwards moving to a limit position. According to the improved screw rod component, the upper and lower limit positions of the nut can be accurately controlled, and the limit positions of a driven part can further be accurately controlled.
Description
Technical field
The utility model relates to screw mandrel technical field, relates in particular to a kind of screw component of improvement.
Background technique
As a kind of driving mechanism of important kind, lead screw transmission mechanism is very general in application in machine equipments; Utilizing lead screw transmission mechanism to drive in transmission part straight-line process, existing screw mandrel is difficult to control exactly the limit position of transmission part.
Summary of the invention
The purpose of this utility model is to provide for the deficiencies in the prior art a kind of screw component of improvement, and this screw component can accurately and reliably be controlled the limit position of transmission part.
For achieving the above object, the utility model is achieved through the following technical solutions.
A kind of screw component of improvement, include the screw mandrel of vertical extension, screw mandrel includes the upper straight rod section, middle screw mandrel section and the lower straight bar section that connect successively from top to bottom, upper straight rod section, middle screw mandrel section and lower straight bar section are integral type structure, the periphery wall of middle screw mandrel section is provided with external screw thread, external screw thread is the trapezoidal thread of single line, and the tooth form angle of external screw thread is that 30 ° and pitch are 4mm; Middle screw mandrel section is fitted with nut, screw mandrel section in the middle of nut can be set in relatively up and downly, and the center hole inner circle wall of nut core is provided with the internal screw thread matching with external screw thread, and external screw thread engages with internal screw thread; Upper straight rod section is set with upper limit position block, and lower straight bar section is set with lower position block, and the upper-end surface of the lower end surface of upper limit position block and middle screw mandrel section touches, and the lower end surface of the upper-end surface of lower position block and middle screw mandrel section touches; Upper limit position block offer lock dress hole, lock dress hole be fitted with locking nut, the thread head of upper locking nut be screwed on lock dress hole in and with upper straight rod section butt; Lower position block offers lower lock dress hole, and lower lock dress hole is fitted with lower locking nut, the thread head of lower locking nut be screwed in lower lock dress hole and with lower straight bar section butt.
The beneficial effects of the utility model are: the screw component of a kind of improvement described in the utility model, its screw mandrel comprises upper straight rod section, middle screw mandrel section and lower straight bar section, the periphery wall of middle screw mandrel section arranges external screw thread, middle screw mandrel section suit nut, external screw thread engages with the internal screw thread of nut, upper straight rod section suit upper limit position block, lower straight bar section suit lower position block, upper limit position block is offered the dress hole of locking, the thread head of upper locking nut be screwed on lock dress hole in and with upper straight rod section butt, lower position block is offered lower lock dress hole, the thread head of lower locking nut be screwed in lower lock dress hole and with lower straight bar section butt.In the utility model assembly process, upper limit position block is fixed on upper straight rod section by upper locking screw locking, and lower position block is locked in lower straight bar section by lower locking nut; Wherein, upper limit position block is for limiting the upper limit position of nut, and lower position block is used for the lower position of limiting nut, in the time moving to limit position on nut, and nut and upper limit position block butt; In the time that nut is displaced downwardly to limit position, nut and lower position block butt.Design by said structure, the utility model can be controlled upper limit position and the lower position of nut exactly, and then controls exactly the limit position of transmission part.
Accompanying drawing explanation
Utilize accompanying drawing to be further detailed the utility model below, but the embodiment in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
In Fig. 1, include:
1---screw mandrel 2---upper straight rod section
3---middle screw mandrel section 4---lower straight bar section
5---external screw thread 6---nut
7---upper limit position block 8---lower position block
9---upper locking nut 10---lower locking nut.
Embodiment
Below in conjunction with concrete mode of execution, the utility model is described.
As shown in Figure 1, a kind of screw component of improvement, include the screw mandrel 1 of vertical extension, screw mandrel 1 includes the upper straight rod section 2, middle screw mandrel section 3 and the lower straight bar section 4 that connect successively from top to bottom, upper straight rod section 2, middle screw mandrel section 3 and lower straight bar section 4 are integral type structure, the periphery wall of middle screw mandrel section 3 is provided with external screw thread 5, and external screw thread 5 is the trapezoidal thread of single line, and the tooth form angle of external screw thread 5 is that 30 ° and pitch are 4mm; Middle screw mandrel section 3 is fitted with nut 6, screw mandrel section 3 in the middle of nut 6 can be set in relatively up and downly, and the center hole inner circle wall of nut 6 cores is provided with the internal screw thread matching with external screw thread 5, and external screw thread 5 engages with internal screw thread; Upper straight rod section 2 is set with upper limit position block 7, and lower straight bar section 4 is set with lower position block 8, and the upper-end surface of the lower end surface of upper limit position block 7 and middle screw mandrel section 3 touches, and the lower end surface of the upper-end surface of lower position block 8 and middle screw mandrel section 3 touches; Upper limit position block 7 offer lock dress hole, lock dress hole be fitted with locking nut 9, the thread head of upper locking nut 9 be screwed on lock dress hole in and with upper straight rod section 2 butts; Lower position block 8 offers lower lock dress hole, and lower lock dress hole is fitted with lower locking nut 10, the thread head of lower locking nut 10 be screwed in lower lock dress hole and with lower straight bar section 4 butts.
In the utility model assembly process, upper limit position block 7 is locked in upper straight rod section 2 by upper locking nut 9, and lower position block 8 is locked in lower straight bar section 4 by lower locking nut 10; Wherein, upper limit position block 7 is for limiting the upper limit position of nut 6, and lower position block 8 is for limiting the lower position of nut 6, in the time moving to limit position on nut 6, and nut 6 and upper limit position block 7 butts; In the time that nut 6 is displaced downwardly to limit position, nut 6 and lower position block 8 butts.
Design by said structure, the utility model can be controlled upper limit position and the lower position of nut 6 exactly, and then controls exactly the limit position of transmission part.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (1)
1. the screw component of an improvement, it is characterized in that: the screw mandrel (1) that includes vertical extension, screw mandrel (1) includes the upper straight rod section (2), middle screw mandrel section (3) and the lower straight bar section (4) that connect successively from top to bottom, upper straight rod section (2), middle screw mandrel section (3) and lower straight bar section (4) are integral type structure, the periphery wall of middle screw mandrel section (3) is provided with external screw thread (5), external screw thread (5) is the trapezoidal thread of single line, and the tooth form angle of external screw thread (5) is that 30 ° and pitch are 4mm; Middle screw mandrel section (3) is fitted with nut (6), screw mandrel section (3) in the middle of nut (6) can be set in relatively up and downly, the center hole inner circle wall of nut (6) core is provided with the internal screw thread matching with external screw thread (5), and external screw thread (5) engages with internal screw thread; Upper straight rod section (2) is set with upper limit position block (7), lower straight bar section (4) is set with lower position block (8), the upper-end surface of the lower end surface of upper limit position block (7) and middle screw mandrel section (3) touches, and the lower end surface of the upper-end surface of lower position block (8) and middle screw mandrel section (3) touches; Upper limit position block (7) offer lock dress hole, lock dress hole be fitted with locking nut (9), the thread head of upper locking nut (9) be screwed on lock dress hole in and with upper straight rod section (2) butt; Lower position block (8) offers lower lock dress hole, and lower lock dress hole is fitted with lower locking nut (10), the thread head of lower locking nut (10) be screwed in lower lock dress hole and with lower straight bar section (4) butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675661.5U CN203641419U (en) | 2013-10-30 | 2013-10-30 | Improved screw rod component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675661.5U CN203641419U (en) | 2013-10-30 | 2013-10-30 | Improved screw rod component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641419U true CN203641419U (en) | 2014-06-11 |
Family
ID=50872666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320675661.5U Expired - Fee Related CN203641419U (en) | 2013-10-30 | 2013-10-30 | Improved screw rod component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641419U (en) |
-
2013
- 2013-10-30 CN CN201320675661.5U patent/CN203641419U/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: 20140611 Termination date: 20141030 |
|
| EXPY | Termination of patent right or utility model |