CN2784672Y - Double synchronous rotating worm and worm wheel pair mechanism - Google Patents

Double synchronous rotating worm and worm wheel pair mechanism Download PDF

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Publication number
CN2784672Y
CN2784672Y CN 200520095840 CN200520095840U CN2784672Y CN 2784672 Y CN2784672 Y CN 2784672Y CN 200520095840 CN200520095840 CN 200520095840 CN 200520095840 U CN200520095840 U CN 200520095840U CN 2784672 Y CN2784672 Y CN 2784672Y
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CN
China
Prior art keywords
worm
working
worm screw
control
worm wheel
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
Application number
CN 200520095840
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Chinese (zh)
Inventor
李志明
杨光
韩少军
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN 200520095840 priority Critical patent/CN2784672Y/en
Application granted granted Critical
Publication of CN2784672Y publication Critical patent/CN2784672Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a double synchronous rotary mechanism for a worm rod and a worm wheel pair, which comprises a frame and a worm wheel is arranged on the frame. The utility model is characterized in that a driving worm rod and a controlling worm rod are also arranged on the frame, and the driving worm rod and the controlling worm rod are simultaneously engaged and matched with the worm wheel to synchronously rotate; the working surface of the driving worm rod is in contact with the working flank of the worm wheel, and the working surface of the controlling worm rod can be in contact with the non-working flank of the worm wheel, and can also be in contact with the working flank of the worm wheel; the mechanism can effectively eliminate the gap between the worm wheel and the worm rod and can cause the worm wheel to rotate in two directions to be completely and strictly self-locked without the influence of the external load variation, and thus, the returning precision of a main shaft which is connected with the worm wheel can be widely increased to ensure the precision of manufactured products. When the working surface of the controlling worm rod adjusts to the same working flank which drives the worm rod and the worm wheel to contact, the loading capacity of the worm wheel can be widely increased under the same structure.

Description

Two synchronous rotary worm worm gear pair mechanism
Technical field
The utility model relates to the worm-gears mechanism in the Machine Design, refers to a kind of two rotary worm worm gear pair mechanism synchronously particularly.
Background technique
Worm-gears mechanism has been widely used in fields such as precision optical machinery.In the precision optical machinery field, equipment such as numerical control machine tool such as numerical control bent axle, cam grinding machine require the strictness of main shaft rotation angle to be subjected to the main axle servo Electric Machine Control, do not allow when the position of action point of external load size, direction and power changes, because of making worm gear, the gap that exists between worm-gears have a little to rock, otherwise will have influence on the rotating accuracy of main shaft, and then influence the accuracy of manufacturing of product.The two-way gap that traditional two semi-scroll bars or two semi-scroll wheel mechanism have been eliminated worm-gears, but its bearing capacity also declines to a great extent thereupon.In order to improve bearing capacity, one of limited method is the size that increases worm gear, because of worm gear non-ferrous metal manufacturing commonly used, higher and the bearing capacity of its manufacture cost has significant limitation, so how to make the worm gear of same physical dimension have higher bearing capacity, this has great Practical significance to worm gear pair.Have not yet to see by the combination between the parts and just can effectively reduce its gap or significantly increase the worm-gears mechanism of its bearing capacity.
Summary of the invention
The purpose of this utility model will overcome above-mentioned existing in prior technology defective exactly, provides a kind of and can effectively eliminate the gap between worm gear and the worm screw, two rotary worm worm gear pair mechanisms synchronously that can increase its bearing capacity under same physical dimension.
For realizing this purpose, two rotary worm worm gear pair mechanisms synchronously that the utility model is designed, include a frame, one worm gear is installed on the described frame, its special way is: also be equipped with one on the described frame and drive worm screw and a control worm screw, described driving worm screw and control worm screw while and described worm gear engagement fit and rotation synchronously.
In above-mentioned two rotary worm worm gear pair mechanisms synchronously, with worm gear with drive the working flank that the contacted one side of worm screw is called worm gear, that is to say a lateral tooth flank that impels worm gear to rotate; Another side is called the non-working flank of worm gear.In like manner, the one side that drives the worm and wheel contact is called the working surface that drives worm screw, the one side that the control worm and wheel is contacted is called the working surface of controlling worm screw.
When the working surface that adopt to drive worm screw and the working flank of worm gear contact, control the contacted composite structure of non-working flank of the working surface of worm screw and worm gear, the working surface that the working flank of worm gear and non-working flank both sides are driven worm screw and control worm screw props up fully, worm gear is on the both direction that will rotate, complete strict self-locking is without any loosening.Worm gear is by driving worm drive, and the worm gear rotation angle only is subjected to the control of the control worm screw rotation angle of rotation synchronously, can be because of the variation of any external load size or direction, perhaps backlash and influence its rotating accuracy, and it is also constant to drive the bearing capacity of worm screw and worm gear.
The working surface that contacts, controls worm screw when the working surface that adopt to drive worm screw and the working flank of worm gear with the bearing capacity of worm-gears mechanism is significantly increased, can double during also with the contacted composite structure of working flank of worm gear in theory.
Advantage of the present utility model is: designed driving worm screw and control worm screw are also rotated synchronously with the worm gear engagement fit simultaneously, the gap between worm gear and worm screw has been eliminated in strictness, worm gear rotates complete strict self-locking on both direction, the influence that not changed by external load, thereby the rotating accuracy of the main shaft that links to each other with worm gear is largely increased, and then can guarantees the precision of manufacturing product.Simultaneously, the bearing capacity of this twin worm worm gear pair mechanism not only can not descend, and the working surface that will control worm screw is when being adjusted to the same working flank that drives the worm and wheel contact, and the bearing capacity of worm gear will significantly improve under same physical dimension.
Description of drawings
Fig. 1 is a kind of two bindiny mechanism's schematic representation of rotary worm worm gear pair mechanism synchronously;
Fig. 2 is the A portion enlarger schematic representation of Fig. 1;
Fig. 3 is the B portion enlarger schematic representation of Fig. 1;
Fig. 4 is another kind of two bindiny mechanism's schematic representation of rotary worm worm gear pair mechanism synchronously.
Fig. 5 is the C portion enlarger schematic representation of Fig. 4;
Fig. 6 is the D portion enlarger schematic representation of Fig. 4.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Two rotary worm worm gear pair mechanisms synchronously as shown in Figure 1 to Figure 3 are that two motors drive the structure that two worm screws are rotated synchronously respectively.It has a frame 9, and a worm gear 4 is installed on the frame 9, and the both sides of worm gear 4 respectively are equipped with one and drive worm screw 5 and a control worm screw 3.Drive worm screw 5 and 3 whiles and worm gear 4 engagement fit of control worm screw, wherein: the working surface 5a that drives worm screw 5 contacts with the working flank 4a of worm gear 4, and the working surface 3a of control worm screw 3 contacts with the non-working flank 4b of worm gear 4.Drive motor 6 links to each other with driving worm screw 5 by a coupling 7, rotates in order to drive worm gear 4.Control motor 1 links to each other with control worm screw 3 by another coupling 8, in order to the amounts of rotation of control worm gear 4.Also be provided with an axial position regulating mechanism 2 between control worm screw 3 and the control motor 1, in order to regulate the axial position of control worm screw 3 at any time.Drive motor 6 and control motor 1 are the servo or stepper motor that rotates synchronously, and they can drive driving worm screw 5 and control worm screw 3 is rotated synchronously.
When the driving worm screw in the said mechanism 5 was opposite with the rotary orientation of controlling worm screw 3, drive motor 6 rotated synchronously with control motor 1 and turns to identical; When the rotary orientation that drives worm screw 5 and control worm screw 3 was identical, then drive motor 6 and control motor 1 rotated and switched in opposite synchronously.
To another kind of two rotary worm worm gear pair mechanisms synchronously shown in Figure 6, is that a motor drives the structure that two worm screws are rotated synchronously by synchronous transmission device as Fig. 4.It has a frame 9, and a worm gear 4 is installed on the frame 9, and the both sides of worm gear 4 respectively are equipped with one and drive worm screw 5 and a control worm screw 3.Drive worm screw 5 and 3 whiles and worm gear 4 engagement fit of control worm screw, wherein: the working surface 5a that drives worm screw 5 contacts with the working flank 4a of worm gear 4, and the working surface 3a of control worm screw 3 also contacts with the working flank 4a of worm gear 4.Drive motor 6 links to each other with driving worm screw 5 by a coupling 7, rotates in order to drive worm gear 4.5 of driving worm screws pass through a synchronous transmission device 10 and link to each other with control worm screw 3.Synchronous transmission device 10 can be gear, sprocket wheel or other conventional driving mechanisms, the gear drive of three Gear combination that adopt in the present embodiment.Also be provided with an axial position regulating mechanism 2 between control worm screw 3 and the synchronous transmission device 10, in order to regulate the axial position of control worm screw 3 at any time.Drive motor 6 is servo or stepper motor, can drive to drive worm screw 5 and drive control worm screw 3 by synchronous transmission device 10 to rotate synchronously.
When the rotary orientation of driving worm screw in the said mechanism 5 and control worm screw 3 was opposite, synchronous transmission device 10 made and drives worm screw 5 and control worm screw 3 and rotate synchronously and turn to identical; When the rotary orientation that drives worm screw 5 and control worm screw 3 was identical, then synchronous transmission device 10 rotated and switched in opposite driving worm screw 5 and control worm screw 3 synchronously.

Claims (5)

1. two rotary worm worm gear pair mechanism synchronously, include a frame (9), one worm gear (4) is installed on the described frame (9), it is characterized in that: also be equipped with one on the described frame (9) and drive worm screw (5) and a control worm screw (3), described driving worm screw (5) and control worm screw (3) are also rotated synchronously with described worm gear (4) engagement fit simultaneously.
2. two rotary worm worm gear pair mechanism synchronously according to claim 1, it is characterized in that: the working surface (5a) of described driving worm screw (5) contacts with the working flank (4a) of described worm gear (4), and the working surface (3a) of described control worm screw (3) contacts with the non-working flank (4b) of described worm gear (4).
3. two rotary worm worm gear pair mechanism synchronously according to claim 1, it is characterized in that: the working surface (5a) of described driving worm screw (5) contacts with the working flank (4a) of described worm gear (4), and the working surface (3a) of described control worm screw (3) also contacts with the working flank (4a) of described worm gear (4).
4. according to claim 1 or 2 or 3 described two rotary worm worm gear pair mechanisms synchronously, it is characterized in that: described driving worm screw (5) links to each other with drive motor (6), described control worm screw (3) links to each other with control motor (1), and described drive motor (6) and control motor (1) are the servo or stepper motor that rotates synchronously.
5. according to claim 1 or 2 or 3 described two rotary worm worm gear pair mechanisms synchronously, it is characterized in that: described driving worm screw (5) links to each other with drive motor (6), and described control worm screw (3) links to each other with driving worm screw (5) by synchronous transmission device (10).
CN 200520095840 2005-04-07 2005-04-07 Double synchronous rotating worm and worm wheel pair mechanism Expired - Fee Related CN2784672Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520095840 CN2784672Y (en) 2005-04-07 2005-04-07 Double synchronous rotating worm and worm wheel pair mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520095840 CN2784672Y (en) 2005-04-07 2005-04-07 Double synchronous rotating worm and worm wheel pair mechanism

Publications (1)

Publication Number Publication Date
CN2784672Y true CN2784672Y (en) 2006-05-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520095840 Expired - Fee Related CN2784672Y (en) 2005-04-07 2005-04-07 Double synchronous rotating worm and worm wheel pair mechanism

Country Status (1)

Country Link
CN (1) CN2784672Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806702A (en) * 2015-04-17 2015-07-29 江阴市华方新能源高科设备有限公司 Single-power source and double-worm driving type rotary driving device
CN104948672A (en) * 2015-07-01 2015-09-30 王烽 Gapless worm gear worm rod speed reducer
CN107461457A (en) * 2016-06-06 2017-12-12 舍弗勒技术股份两合公司 Worm-and-wheel gear

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104806702A (en) * 2015-04-17 2015-07-29 江阴市华方新能源高科设备有限公司 Single-power source and double-worm driving type rotary driving device
CN104948672A (en) * 2015-07-01 2015-09-30 王烽 Gapless worm gear worm rod speed reducer
CN107461457A (en) * 2016-06-06 2017-12-12 舍弗勒技术股份两合公司 Worm-and-wheel gear

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