CN87102735A - Programmed worm-and-ball transmission device - Google Patents
Programmed worm-and-ball transmission device Download PDFInfo
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- CN87102735A CN87102735A CN87102735.6A CN87102735A CN87102735A CN 87102735 A CN87102735 A CN 87102735A CN 87102735 A CN87102735 A CN 87102735A CN 87102735 A CN87102735 A CN 87102735A
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Abstract
Programmed worm-and-ball transmission device.The present invention belongs to mechanical engineering.The present invention creates the program transmission agency of worm gears and improves transmission efficiency.The feature of programmed worm-and-ball transmission device is made up of programmed worm, worm screw, ball, spherical guide and ball loop.Programmed worm-and-ball transmission device integrates numerous mechanical transmission functions, and it can realize just changeing transmission, the counter-rotating transmission, the transmission of angle speed ratio, variable force are swung transmission apart from transmission, intermittently-driving, the stepping transmission suspends the self-locking transmission and with the program transmission of above-mentioned actuation layout.It can be used in mechanism hand, robot and the mechanical equipment with complex programmed movement.
Description
The present invention belongs to mechanical engineering.
Described in " Der Grundsatz der Maschinen " compiled according to the machinery combination of Machine Design teaching and research group of Tsing-Hua University and central TV university, in the prior art, worm screw be with worm gear directly mesh realize mechanically operated.In the Worm and Worm Gear Driving device, worm screw is that diameter is little, and axially long, the number of teeth is few, the spiral gear that lead angle is little.The spiral gear that worm gear is big, the axial weak point of diameter, the number of teeth is many, lead angle is big.In the prior art, worm screw is to make with steel, and worm gear is to make with bronze.
The shortcoming of Worm and Worm Gear Driving is not have the program transmission agency, and transmission efficiency is low, must together change worm and worm wheel when changing angular velocity ratio, and volume is still disliked greatly, the manufacture cost height.
The objective of the invention is to create the program transmission agency of worm gears, improve transmission efficiency, reduced volume reduces manufacture cost.
Programmed worm-and-ball transmission device is by programmed worm, and worm screw, ball, spherical guide and ball loop are formed.
In programmed worm-and-ball transmission device, not directly engagement between programmed worm and the worm screw, but realize mechanically operated by engagement with ball.The teeth groove of programmed worm and worm screw is the garden arc that is meshed with ball.The program spiral alveolar of programmed worm is that its corresponding program spiral alveolar of different program behaviors is also different, for mating different programmed worms, pitch worm screws such as the general employing of the worm screw in the transmission device according to the design of the program behavior of machinery.
In the programmed worm-and-ball transmission device, ball is the rigid spheres of garden shape.The steel ball of polishing is specially adapted in the Worm-and-ball transmission device, ball is in programmed worm-and-ball transmission device, directly be meshed with programmed worm and worm screw and guide rail three, ball is the bridge that two worm screw mechanical forces are transmitted, and is again the hinge that device is rely and turned round.
Spherical guide in the programmed worm-and-ball transmission device is made up of the track of rigidity.The rail level of the rigid track of described spherical guide is the garden arc that is meshed with ball.Spherical guide is to form with housing casting processing together, can plate the antifriction high-abrasive material, or is fixed on the guide rail that the antifriction high-abrasive material is made on the support of housing or special use.The effect of spherical guide in ball gear is the normal operation that keeps normal engaged of ball and two worm screws and guiding ball.
Ball loop in the programmed worm-and-ball transmission device is to form with the duct that the guide rail two ends contain the confession ball-recirculation motion that connects mutually.The ball loop generally forms with the housing casting processing, or will give that the ball loop of making is fixed on the housing or special-purpose support on, the duct in ball loop must be smooth, and ball can be moved therein smoothly.
Programmed worm-and-ball transmission device is to invent on the basis of Worm-and-ball transmission device and cage type Worm-and-ball transmission device, is the non-vanishing two kinds of structures of zero-sum distance of shaft centers so programmed worm-and-ball transmission device is divided into distance of shaft centers.In the non-vanishing programmed worm-and-ball transmission device of distance of shaft centers, the diameter of two worm screws equates generally speaking, thus though be distance of shaft centers be zero or the non-vanishing programmed worm-and-ball transmission device of distance of shaft centers in angular velocity ratio between two worm screws be the inverse ratio of two worm spiral lift angle tangent values.This is the angular velocity ratio characteristic of Worm-and-ball transmission.
In programmed worm-and-ball transmission device, programmed worm and relative sense of rotation between the worm screw are by the helix direction decision of two worm screws, the sense of rotation of identical then two worm screws of the helix direction of two worm screws is identical, and the sense of rotation of opposite then two worm screws of the helix direction of two worm screws is opposite.This is the sense of rotation characteristic of Worm-and-ball transmission.
Why programmed worm-and-ball transmission device can do the program transmission, has utilized the angular velocity ratio characteristic and the sense of rotation characteristic of Worm-and-ball transmission exactly.
In the programmed worm-and-ball transmission device, the program spiral alveolar of programmed worm, the program behavior of decision worm screw, different spiral alveolars just produces different program behaviors.So in a programmed worm-and-ball transmission device, adopt the method for changing programmed worm can obtain the transmission of random procedure.The program helix of programmed worm can be single program helical, also can be complicated program helix, can be the program helix of single head, also can be the program helix of bull.In general, the programmed worm of single head helix is applicable in the non-vanishing programmed worm-and-ball transmission device of distance of shaft centers, and the programmed worm of multi-head spiral line is applicable to that distance of shaft centers is in zero the programmed worm-and-ball transmission device.
Active worm screw in the programmed worm-and-ball transmission device such as generally is at the worm screw of pitch helix, and driven worm screw generally is the worm screw of program helix, and programmed worm is interchangeable, to adapt to the needs of multiple program behavior.
Fig. 1 is the non-vanishing programmed worm-and-ball transmission device of distance of shaft centers.Initiatively worm screw 1 such as is at the worm screw of pitch single head left hand screw line, and driven worm screw 2 is worm screws of single head program helix, and the program helix teeth groove of programmed worm is divided into the beginning section, just changeing afterburning self-locking section, counter-rotating section fast, wobble segment, wobble segment stepping at intermittence at intermittence section, rear supervisor helix is formed.The structure of program helix is: beginning section, helix and parallel axes, the angle of spiral is 90 °.Just changeing afterburning self-locking section, helix is with the left-handed pitch of little lift angle, and lift angle becomes big gradually and continues a left-handed pitch then, follows and parallel axes.Counter-rotating section fast, helix is with little lift angle dextrorotation 9/8ths pitches.Wobble segment, left-handed 1/4th pitches of helix, then dextrorotation 1/4th pitches.Wobble segment intermittently, left-handed 1/4th pitches of helix, then and parallel axes, dextrorotation 1/4th pitches then, then and parallel axes.Then after left-handed 1/4th pitches of helix with parallel axes, again after dextrorotation 1/4th pitches with parallel axes.Stepping section intermittently, after helix dextrorotation 1/4th pitches with parallel axes, and after dextrorotation 1/4th pitches with parallel axes.With parallel axes, follow left-handed 3/8ths pitches after left-handed then 1/4th pitches.Rear, the last and parallel axes of helix.
After active worm screw 1 is rotated along the direction of arrow clockwise, the axial force that left hand screw teeth groove on the worm screw produces promotes the ball 3 past directions of arrow along guide rail 4 moving linearlies, the straight line motion of ball 3 promotes driven programmed worm 2 and does the motion of following program: when ball enters the beginning during section, slow down and stop operating and self-locking after afterburning fortune circles in the quick dextrorotation of the programmed worm back of circling.When ball moves to quick counter-rotating section, programmed worm inhour 9/8ths weeks of fast rotational.When ball moved to wobble segment, programmed worm was swung for 1/4th weeks earlier clockwise, then inhour 1/4th weeks of swing.When ball moved to intermittently wobble segment, programmed worm is 1/4th weeks of swing clockwise earlier, and was slack then, inhour 1/4th weeks of swing again after a period of time, and slack again then, and repeat above-mentioned action.When ball moves to stepping at intermittence section, programmed worm is from counter-clockwise 1/4th weeks of stepping of motionless state, slack then, counter-clockwise again 1/4th weeks of stepping after a period of time, slack then, and clockwise 1/4th weeks of stepping, slack then, clockwise again 3/8ths weeks of stepping after a period of time.When ball moved to rear, programmed worm was slack.Programmed worm-and-ball transmission device has been finished the transmission process of a cover program behavior, prepares to change pearl, to repeat the transmission of program behavior for the first time.When ball 3 moves to the terminal of guide rail, released the engagement center line by the camber line track of guide rail 4, break away from engagement with two worm screws, the worm screw that is then continued rotation advances in the ball loop 5, ball has been expired in storage in this moment ball loop 5, and the ball 3 that enters in the ball loop advances guide rail and two worm screws to mesh on a ball of the other end.This is the pearl process of changing of programmed worm-and-ball transmission device.Worm screw 1 is constantly rotated, and promotes ball shuttling movement constantly, and the shuttling movement of ball promotes programmed worm 2 and repeats its program behavior.When worm screw 1 counter-rotating, the program behavior of programmed worm 2 is opposite.So, with the supporting programmed worm-and-ball transmission device of controlled clockwise and anticlockwise motor in, shouldn't the ball loop.
In the non-vanishing programmed worm-and-ball transmission device of distance of shaft centers, the active worm screw transmission simultaneously of pitch such as is distributed in the programmed worm of the several distinct program helixes of its garden on week, finishes the program behavior of numerous complexity simultaneously.This programmed worm-and-ball transmission device is specially adapted to mechanism hand, in robot and the mechanical equipment with complex programmed movement.
Fig. 2 is that distance of shaft centers is zero programmed worm-and-ball transmission device, and driven worm screw 1 is a programmed worm, and the program helix of programmed worm generally is the bull structure, and each helix of program helix of bull must be identical.Initiatively worm screw 2 is cage type Worms, and initiatively worm screw 2 must equate with spiral the end of a thread number of driven worm screw 1.When active worm screw 2 rotation, promote the ball 3 that is engaged with and move along separately guide rail 4 simultaneously, the motion simultaneously of ball 3 promotes programmed worm 1 simultaneously by the program behavior motion of formulating, thereby finishes the overall process of program transmission.When ball moves to the terminal of guide rail, released the engagement center line by the teeth groove that the programmed worm end shoals gradually, the cage type Worm end teeth groove that diminishes that shoals gradually then advances ball in the ball loop 5, stored up in the ball loop this moment has expired ball, be pushed in the ball propelling guide rail of ball in the loop and mesh, continue to finish program behavior for the second time with two worm screws with the other end in the ball loop.Distance of shaft centers is zero programmed worm-and-ball transmission device, and load capacity is big, can be used in the powerful program transmission.
The good effect of programmed worm-and-ball transmission device is the mechanical transmission function that integrates numerous, it can do the clockwise and anticlockwise transmission, speed change transmission, variable force apart from transmission, swing transmission, intermittently-driving, stepping transmission, suspend the self-locking transmission and with the program transmission of above-mentioned choreography.The programmed worm-and-ball transmission device volume is little, and transmission power is big, and the transmission efficiency height is specially adapted in mechanism hand, robot and the mechanical equipment with complex programmed movement.
Embodiment: swing transmission case
Fig. 3 is a kind of swing transmission case.Swing transmission case actual by the swing programmed worm-and-ball transmission device formed.When the active worm screw was rotated, the helix on the worm screw promoted ball along guide rail movement, and the motion of ball promotes the swing programmed worm and does oscillating motion.The swing transmission case adopts electric discharge machining or the copying milling machine processing except that the swing program helix of swing programmed worm, and all the other all can adopt conventional method processing.Two worm screws all are to be made by steel.
The description of symbols of Fig. 3: 1. worm screw 2. swing programmed worms, 3. ball, 4. guide rail, 5. ball loop, 6. worm spiral teeth groove, 7. swing program spiral alveolar, 8. casing, 9. end cap, 10. screw rod, 11. bearings, 12. axial ball bearings, 13. oil sealings.
Claims (8)
1, a kind of worm gears.It is characterized in that by programmed worm, worm screw, ball, spherical guide and ball loop are formed.
2, device according to claim 1 is characterized in that the spiral alveolar of described programmed worm is made up of the program spiral alveolar.
3, device according to claim 1, the spiral alveolar that it is characterized in that described programmed worm and worm screw are the garden arcs that is meshed with ball.
4, device according to claim 1 is characterized in that described ball is that the spheroid of rigidity is formed.
5, device according to claim 1 is characterized in that described guide rail is made up of the track of rigidity.
6, guide rail according to claim 5, the rail level that it is characterized in that described rigid track are the garden arcs that is meshed with ball.
7, device according to claim 1 is characterized in that described ball loop is by being formed with the duct that the guide rail two ends contain the confession ball-recirculation motion that connects mutually.
8, a kind of worm gears, it is characterized in that under the situation of active worm screw with same rotational speed and same sense of rotation, programmed worm can just change transmission, counter-rotating transmission, the transmission of angle speed ratio, variable force apart from transmission, swing transmission, intermittently-driving, stepping transmission, self-locking transmission, suspend transmission and with the program transmission of above-mentioned actuation layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102735 CN1017642B (en) | 1987-04-15 | 1987-04-15 | Programmed worm-and-ball transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102735 CN1017642B (en) | 1987-04-15 | 1987-04-15 | Programmed worm-and-ball transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87102735A true CN87102735A (en) | 1988-11-02 |
| CN1017642B CN1017642B (en) | 1992-07-29 |
Family
ID=4814095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102735 Expired CN1017642B (en) | 1987-04-15 | 1987-04-15 | Programmed worm-and-ball transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1017642B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087615A (en) * | 2018-01-12 | 2018-05-29 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of novel transmission mechanism and with its inlet valve, cistern fittings |
-
1987
- 1987-04-15 CN CN 87102735 patent/CN1017642B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087615A (en) * | 2018-01-12 | 2018-05-29 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of novel transmission mechanism and with its inlet valve, cistern fittings |
| CN108087615B (en) * | 2018-01-12 | 2023-09-05 | 厦门瑞尔特卫浴科技股份有限公司 | Novel transmission mechanism and water inlet valve and water tank accessory with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1017642B (en) | 1992-07-29 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |