CN202674207U - Differential screw fine adjusting device - Google Patents
Differential screw fine adjusting device Download PDFInfo
- Publication number
- CN202674207U CN202674207U CN 201220277212 CN201220277212U CN202674207U CN 202674207 U CN202674207 U CN 202674207U CN 201220277212 CN201220277212 CN 201220277212 CN 201220277212 U CN201220277212 U CN 201220277212U CN 202674207 U CN202674207 U CN 202674207U
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- CN
- China
- Prior art keywords
- screw
- adjusting
- swivel nut
- differential
- unthreaded hole
- 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 a precision fine adjusting device and particularly relates to a differential screw fine adjusting device which comprises a base, a guide rod, a guide plate, a screw rod, a screw and an adjusting screw barrel. The base is provided with a vertically-through threaded hole and a vertically-through unthreaded hole, the adjusting screw barrel is in a barrel structure, the outer cylindrical surface and the inner cylindrical surface of the adjusting screw barrel are provided with an inner thread and an outer thread respectively, and the outer thread and the inner thread are in threaded connection to form a pair of screw pairs. The inner thread on the adjusting screw barrel is in threaded connection with the screw rod, the inner thread and the outer thread of the adjusting screw barrel are identical in screw direction and different in pitch, and the screw difference of the two screw pairs is equal to the fine adjusting distance generated by rotatably adjusting the screw barrel by one circle. The differential screw fine adjusting device is simple in structure, reasonable in design and easy to operate; the actual linear displacement generated by differential is small, and precision fine adjustment can be realized; and the device is convenient in differential screw fine adjustment, reliable in positioning, high in precision and wide in application range.
Description
Technical field
The utility model relates to a kind of precision micrometer adjustable device, particularly a kind of differential screw vernier device.
Background technique
In the work of carrying out Machine Design and assembling, often can run into the problem that needs accurate adjustment component position, the short-cut method that usually adopts is directly to utilize a pair of screw pair to regulate.Although but the method is easy, be subject to the restriction of pitch size, can't the accurate adjustment part position.
Application number a kind of constant-force self-locking differential screw fine-tuning device that has been 201110155051.8 Patent Application Publication, this vernier device comprises control agent, master connecting rod body and slave connecting rod body, and the outside thread of the internal thread of master connecting rod body and slave connecting rod body connects the vernier device that consists of differential type with outside thread and the internal thread of control agent respectively; Described control agent comprises Adjusting bolt Adjusting screw, inner sleeve and overcoat, on the right-hand member outer cylinder of Adjusting bolt Adjusting screw, be inserted in successively inner sleeve and overcoat, by overcoat is connected with the riveting of Adjusting bolt Adjusting screw right side, be enclosed within making on the Adjusting bolt Adjusting screw and can freely rotate and reach axially locating, form control agent; Described master connecting rod body comprises master connecting rod, lock nut and big spring, lock nut and big spring are installed by left end outside thread place at Adjusting bolt Adjusting screw, Adjusting bolt Adjusting screw takes lock nut and big spring revolves in the interior threaded hole that is inserted in master connecting rod together, the rotational lock nut shrinks big spring again, until the pin-and-hole on the lock nut external diameter aligns with elongated slot on the master connecting rod, and with in the pin-and-hole on the elongated slot insertion lock nut external diameter of locating stud on master connecting rod, make master connecting rod and lock nut produce in opposite directions axial force at the major diameter of thread of Adjusting bolt Adjusting screw, Adjusting bolt Adjusting screw and master connecting rod constant force self-locking form the master connecting rod body; Described slave connecting rod body comprises slave connecting rod, pin, spring housing, spring and locking nut, spring housing, spring and locking nut are installed on the corresponding external diameter of slave connecting rod successively, pin-and-hole on the locking nut external diameter is alignd with the elongated slot of the large outer radius of spring housing, and insert in the pin-and-hole of locking nut external diameter through the elongated slot of the large outer radius of spring housing with position limit pin, insert in the pin-and-hole of slave connecting rod right-hand member with the elongated slot of pin through the little outer radius of spring housing, form the slave connecting rod body; In the internal thread that screws into Adjusting bolt Adjusting screw of slave connecting rod, press spring housing and make spring contraction, until the screw at spring housing left end place aligns with screw on the inner sleeve external diameter and uses bolton, make spring housing pulling Adjusting bolt Adjusting screw and locking nut produce relative shaft orientation force at the major diameter of thread of slave connecting rod, Adjusting bolt Adjusting screw and slave connecting rod constant force self-locking, positioning screwn in the screw of master connecting rod middle part is revolved in the elongated slot that is inserted on the outer spiral shell of the slave connecting rod left end footpath again, make master connecting rod on the Adjusting bolt Adjusting screw and slave connecting rod regulate and the self-locking process in guarantee the parallelism of two hole heart lines, whole composition constant-force self-locking differential screw fine-tuning device.
Above-mentioned constant-force self-locking differential screw fine-tuning device, although can its structure of accurate adjustment position complicated, be not easy to manufacturing and troublesome poeration.
The model utility content
Based on the deficiencies in the prior art, main purpose of the present utility model is to provide a kind of screw differential vernier device, this device can the accurate adjustment position, simple in structure, be easy to manufacturing and easy to operate, can be used for the fine position of frock clamping in the machining process, the gap adjustment between component, Applicable scope is extensive.
For achieving the above object, the technical solution adopted in the utility model is: a kind of differential screw vernier device, mainly formed by base, guide rod, guide plate, screw rod, adjustment swivel nut, and the tapped hole of up/down perforation and the unthreaded hole of up/down perforation are set on the described base; Described adjustment swivel nut is sleeve-like structure, and external cylindrical surface is provided with outside thread, and inner cylindrical surface is provided with internal thread; Outside thread on the described adjustment swivel nut is connected with the tapped hole on the base, forms a pair of screw pair; Internal thread on the described adjustment swivel nut is connected with screw flight, forms another to screw pair; Described guide rod lower end be fixed on the base unthreaded hole on, the upper end slides up and down with guide plate one end and is connected; The other end of guide plate is fixed in described screw rod upper end, and the lower end is provided with the screw thread that uses with the screw-internal thread fit of adjusting swivel nut.
Described guide plate one end has elongated slot, the elongated slot pine is enclosed within on the guide rod, the other end is drilled with unthreaded hole or the screw that cooperates with screw rod, connected by narrow groove between described unthreaded hole or screw and the end face, on the both sides of the narrow groove in side little unthreaded hole and the little screw that matches with screw arranged respectively, screw passes little unthreaded hole and is screwed in the little screw.
Adjusting the swivel nut large locking nut that has been threaded; At the screw rod little locking nut that has been threaded.
Internal thread, externally threaded rotation direction on the described adjustment swivel nut are consistent, but pitch do not wait, and the spiral of two screw pairs is poor, are to rotate the fine setting distance of adjusting swivel nut one circle and producing.
Differential screw vernier device of the present utility model compared with prior art, simple in structure, processing ease; The actual straight-line displacement amount of differential generation is little, can realize precise fine-adjustment; Differential differential tuning is convenient, and the location, position is reliable; Applicable scope is larger.
Description of drawings
The front cross-sectional view of Fig. 1 differential screw vernier device of the present utility model;
The plan view of Fig. 2 differential screw vernier device of the present utility model.
Embodiment
Below in conjunction with drawings and Examples differential screw vernier device of the present utility model is explained in detail and illustrates.
As depicted in figs. 1 and 2, a kind of differential screw vernier device, formed by base 1, guide rod 2, guide plate 3, screw rod 4, screw 5, little locking nut 6, adjustment swivel nut 7, large locking nut 8, the tapped hole 9 of up/down perforation and the unthreaded hole 10 of up/down perforation are set on the described base 1; Described adjustment swivel nut 7 is sleeve-like structure, and external cylindrical surface is provided with outside thread, and inner cylindrical surface is provided with internal thread; Outside thread on the described adjustment swivel nut 7 is threaded with tapped hole 9 on the base and is connected, and forms a pair of screw pair, and the internal thread on the described adjustment swivel nut 7 is threaded with screw rod 4, forms another to screw pair; Internal thread, the externally threaded rotation direction adjusted on the swivel nut 7 are consistent, but pitch does not wait; Described guide rod 2 lower ends are fixed in the unthreaded hole 10 on the base 1, and its effect is to rotate when adjusting swivel nut 7, stoping the screw rod rotation with guide plate 3; Adjusting the swivel nut 7 large locking nut 8 that has been threaded, large locking nut 8 is processed with and the internal thread of adjusting swivel nut 7 outside threads and cooperating; At the screw rod 4 little locking nut 6 that has been threaded, little locking nut 6 is processed with the internal thread with screw rod 4 screw-thread fit; Large locking nut 8 and little locking nut 6 are screwed in respectively to be adjusted on swivel nut 7 and the screw rod 4, and its effect is after the gap adjustment is finished, and is used for locking to adjust swivel nut 7 and screw rod 4, prevent they because being subject to external force unintentional rotation.
As shown in Figure 2, described guide plate 3 one ends have elongated slot, the elongated slot pine is enclosed within on the guide rod 2, the other end is drilled with unthreaded hole or the screw that cooperates with screw rod 4, connected by narrow groove between described unthreaded hole or screw and the end face, on the both sides of the narrow groove in side little unthreaded hole and the little screw that matches with screw 5 arranged respectively, screw 5 passes little unthreaded hole and is screwed in the little screw; Described screw rod 4 upper ends are installed in the unthreaded hole or screw of guide plate 3, tighten screw 5 clamping screw rods 4 it is fixed on the guide plate 3.
Differential screw vernier device of the present utility model is adjusted the position of part with the mode of rotating the adjustment swivel nut, screw rod upper end immediate roof be adjusted on the part or be adjusted part and be connected, adjust swivel nut one circle if rotate, adjust swivel nut and screw in pitch t1 of base, screw rod is owing to be subject to the restriction of guide plate and guide rod simultaneously, can not rotate with adjusting swivel nut, thereby and produce relative rotation between the adjustment swivel nut, and back-out one circle is the distance of t2 from adjust swivel nut, pitch t1 and t2's is poor, is to rotate the fine setting distance of adjusting swivel nut one circle and producing.
Claims (4)
1. a differential screw vernier device mainly is comprised of base, guide rod, guide plate, screw rod, adjustment swivel nut, it is characterized in that: the tapped hole of up/down perforation and the unthreaded hole of up/down perforation are set on the described base; Described adjustment swivel nut is sleeve-like structure, and external cylindrical surface is provided with outside thread, and inner cylindrical surface is provided with internal thread; Outside thread on the described adjustment swivel nut is connected with the tapped hole on the base, forms a pair of screw pair; Internal thread on the described adjustment swivel nut is connected with screw flight, forms another to screw pair; Described guide rod lower end be fixed on the base unthreaded hole in, its upper end slides up and down with guide plate one end and to be connected; The other end of guide plate is fixed in described screw rod upper end, and the lower end is provided with the screw thread that uses with the screw-internal thread fit of adjusting swivel nut.
2. differential screw vernier device according to claim 1, it is characterized in that: described guide plate one end has elongated slot, the elongated slot pine is enclosed within on the guide rod, the other end is drilled with unthreaded hole or the screw that cooperates with screw rod, connected by narrow groove between described unthreaded hole or screw and the end face, be respectively equipped with little unthreaded hole and the little screw that matches with screw on the both sides of the narrow groove in side, screw passes little unthreaded hole and is screwed in the little screw.
3. differential screw vernier device according to claim 1 is characterized in that: adjusting the swivel nut large locking nut that has been threaded; At the screw rod little locking nut that has been threaded.
4. according to claim 1, arbitrary described differential screw vernier device in 2,3, it is characterized in that: internal thread, externally threaded rotation direction on the described adjustment swivel nut are consistent, and pitch does not wait.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220277212 CN202674207U (en) | 2012-06-13 | 2012-06-13 | Differential screw fine adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220277212 CN202674207U (en) | 2012-06-13 | 2012-06-13 | Differential screw fine adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674207U true CN202674207U (en) | 2013-01-16 |
Family
ID=47495113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220277212 Expired - Fee Related CN202674207U (en) | 2012-06-13 | 2012-06-13 | Differential screw fine adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674207U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705463A (en) * | 2012-06-13 | 2012-10-03 | 天润曲轴股份有限公司 | Differential screw fine adjustment device |
| CN103943965A (en) * | 2014-04-28 | 2014-07-23 | 西安电子科技大学 | Cable net reflecting surface developable antenna thread differential motion cable length adjusting device and adjusting method |
| CN108730455A (en) * | 2018-06-11 | 2018-11-02 | 顾丽清 | The compensation device of precision cam transmission mechanism |
| CN108757868A (en) * | 2018-06-11 | 2018-11-06 | 顾丽清 | A kind of self-checking device of precision cam transmission mechanism |
| CN111487742A (en) * | 2020-05-29 | 2020-08-04 | 中国科学院长春光学精密机械与物理研究所 | Differential heavy-load fine adjustment mechanism |
-
2012
- 2012-06-13 CN CN 201220277212 patent/CN202674207U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705463A (en) * | 2012-06-13 | 2012-10-03 | 天润曲轴股份有限公司 | Differential screw fine adjustment device |
| CN103943965A (en) * | 2014-04-28 | 2014-07-23 | 西安电子科技大学 | Cable net reflecting surface developable antenna thread differential motion cable length adjusting device and adjusting method |
| CN103943965B (en) * | 2014-04-28 | 2016-03-30 | 西安电子科技大学 | A kind of cable mesh reflector long adjusting device of the differential rope of deployable antenna screw thread and method of adjustment |
| CN108730455A (en) * | 2018-06-11 | 2018-11-02 | 顾丽清 | The compensation device of precision cam transmission mechanism |
| CN108757868A (en) * | 2018-06-11 | 2018-11-06 | 顾丽清 | A kind of self-checking device of precision cam transmission mechanism |
| CN111487742A (en) * | 2020-05-29 | 2020-08-04 | 中国科学院长春光学精密机械与物理研究所 | Differential heavy-load fine adjustment mechanism |
| CN111487742B (en) * | 2020-05-29 | 2022-04-19 | 中国科学院长春光学精密机械与物理研究所 | Differential heavy-load fine adjustment mechanism |
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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: 20130116 Termination date: 20140613 |
|
| EXPY | Termination of patent right or utility model |