CN205013626U - Variable -pitch lead screw - Google Patents
Variable -pitch lead screw Download PDFInfo
- Publication number
- CN205013626U CN205013626U CN201520712972.3U CN201520712972U CN205013626U CN 205013626 U CN205013626 U CN 205013626U CN 201520712972 U CN201520712972 U CN 201520712972U CN 205013626 U CN205013626 U CN 205013626U
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- Prior art keywords
- thread section
- pitch
- screw thread
- screw
- slow speed
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Abstract
The utility model discloses a variable -pitch lead screw, it includes adjusting nut and screw rod, adjusting nut overlaps in the screw rod outside and matches with the screw rod, the screw rod divide into quick screw thread section and screw thread section at a slow speed quick screw thread section and the intersegmental variable -pitch screw thread section that still is equipped with of screw thread at a slow speed, this variable -pitch screw thread section and at a slow speed the screw thread section link to each other the pitch of one end and slightly be greater than screw thread section pitch at a slow speed, and variable -pitch screw thread section links to each other the pitch of one end and slightly is less than quick screw thread section pitch with quick screw thread section, variable -pitch screw thread section pitch size is and evenly scales up. This lead screw simple structure, quick screw thread with at a slow speed between the screw thread conversion smooth and easy, can effectively avoid appearing blocking hindering.
Description
Technical field
The utility model relates to a kind of screw mandrel, is specifically related to a kind of variable pitch screw mandrel.
Background technique
Screw mandrel is transmission component conventional on a kind of machine tool and precision optical machinery, its major function converts rotary motion to linear motion, or change torque axis into axial repeated action power, have highi degree of accuracy, reversibility and high efficiency feature concurrently, screw mandrel is widely used in various industry equipment and precision type instrument simultaneously.In common screw structure, fast thread on screw mandrel be threaded at a slow speed, usually simple transition arc is taked to connect, change too obvious on the one hand fast and at a slow speed, on the other hand due to the pitch of fast thread is the pitch of screw thread at a slow speed 6 times, connection angle is little, and transition arc is not bery smooth and easy, causes the situation often occurring jam.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of variable pitch screw mandrel, and its structure is simple, fast thread and change at a slow speed smooth and easy between screw thread, can effectively avoid occurring jam.
Technical problem to be solved in the utility model realizes by the following technical solutions:
Variable pitch screw mandrel, it comprises adjusting nut and screw rod, described adjusting nut to be enclosed within outside screw rod and to mate with screw rod, described screw rod is divided into fast thread section and thread section at a slow speed, in described fast thread section and be also provided with variable pitch screw section between thread section at a slow speed, this variable pitch screw section is connected the pitch of one end slightly larger than thread section pitch at a slow speed with thread section at a slow speed, and variable pitch screw section is connected with fast thread section, the pitch of one end is slightly less than fast thread section pitch, and described variable pitch screw section pitch size is uniform increments.
Variable pitch screw section two ends are connected with fast thread section with thread section at a slow speed respectively by level and smooth transition arc.
The beneficial effects of the utility model are: by the setting to variable pitch screw section, what make fast thread section and thread section at a slow speed is connected more reasonable, transition region is round and smooth, smooth and easy, the situation well solve jam when adjusting nut pin rotates in screw channel, having some setbacks.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
As shown in Figure 1, variable pitch screw mandrel, it comprises adjusting nut 1 and screw rod 2, adjusting nut 1 to be enclosed within outside screw rod 2 and to mate with screw rod 2, screw rod 2 is divided into fast thread section 3 and thread section 4 at a slow speed, in fast thread section 3 and be also provided with variable pitch screw section 5 between thread section 4 at a slow speed, this variable pitch screw section 5 is connected the pitch of one end slightly larger than the pitch of thread section 4 at a slow speed with thread section 4 at a slow speed, and variable pitch screw section 5 is connected with fast thread section 3, the pitch of one end is slightly less than the pitch of fast thread section 3, and variable pitch screw section 5 pitch size is uniform increments.
Variable pitch screw section 5 two ends are connected with fast thread section 3 with thread section 4 at a slow speed respectively by level and smooth transition arc 6.
More than show and describe basic principle of the present utility model, major character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. variable pitch screw mandrel, it comprises adjusting nut and screw rod, described adjusting nut to be enclosed within outside screw rod and to mate with screw rod, described screw rod is divided into fast thread section and thread section at a slow speed, it is characterized in that: in described fast thread section and be also provided with variable pitch screw section between thread section at a slow speed, this variable pitch screw section is connected the pitch of one end slightly larger than thread section pitch at a slow speed with thread section at a slow speed, and variable pitch screw section is connected with fast thread section, the pitch of one end is slightly less than fast thread section pitch, and described variable pitch screw section pitch size is uniform increments.
2. variable pitch screw mandrel according to claim 1, is characterized in that: variable pitch screw section two ends are connected with fast thread section with thread section at a slow speed respectively by level and smooth transition arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712972.3U CN205013626U (en) | 2015-09-16 | 2015-09-16 | Variable -pitch lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712972.3U CN205013626U (en) | 2015-09-16 | 2015-09-16 | Variable -pitch lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013626U true CN205013626U (en) | 2016-02-03 |
Family
ID=55212230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520712972.3U Active CN205013626U (en) | 2015-09-16 | 2015-09-16 | Variable -pitch lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013626U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317222A (en) * | 2018-04-16 | 2018-07-24 | 暨伟 | A kind of screw rod cylinder wheel decelerator and its screw machining method |
| CN110076611A (en) * | 2019-04-12 | 2019-08-02 | 东莞市中科冠腾科技股份有限公司 | Based on synchronous and guide rail slide block automatic control gearshift |
| CN110173519A (en) * | 2018-02-20 | 2019-08-27 | 株式会社万都 | Electronics caliper brake |
| CN111664236A (en) * | 2020-06-16 | 2020-09-15 | 华中科技大学鄂州工业技术研究院 | Screw rod for realizing geometric motion of multiple objects and application thereof |
-
2015
- 2015-09-16 CN CN201520712972.3U patent/CN205013626U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173519A (en) * | 2018-02-20 | 2019-08-27 | 株式会社万都 | Electronics caliper brake |
| CN110173519B (en) * | 2018-02-20 | 2022-04-26 | 株式会社万都 | Electronic clamp type brake |
| CN108317222A (en) * | 2018-04-16 | 2018-07-24 | 暨伟 | A kind of screw rod cylinder wheel decelerator and its screw machining method |
| CN110076611A (en) * | 2019-04-12 | 2019-08-02 | 东莞市中科冠腾科技股份有限公司 | Based on synchronous and guide rail slide block automatic control gearshift |
| CN111664236A (en) * | 2020-06-16 | 2020-09-15 | 华中科技大学鄂州工业技术研究院 | Screw rod for realizing geometric motion of multiple objects and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |