CN102338195B - Ball worm gear and worm transmission pair - Google Patents
Ball worm gear and worm transmission pair Download PDFInfo
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- CN102338195B CN102338195B CN 201010237732 CN201010237732A CN102338195B CN 102338195 B CN102338195 B CN 102338195B CN 201010237732 CN201010237732 CN 201010237732 CN 201010237732 A CN201010237732 A CN 201010237732A CN 102338195 B CN102338195 B CN 102338195B
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- ball
- worm
- orbit
- worn
- worm gear
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Abstract
The invention discloses a ball worm gear and worm transmission pair. Deep groove ball tracks are distributed on a transmission engagement surface of the worm at equal intervals and are connected with a ball circulating passage; balls can circularly roll in the deep groove roll tracks and the roll circulating passage; a spiral ball track is arranged on an outer circular engagement surface of a worm; and the worm gear and the worm are in mutual engagement transmission through the balls. In the transmission pair, sliding friction of teeth between the conventional worm gear and worm is changed into rolling friction of the rolls; when the roll worm rotates, only the rolls on an engagement part on the ball worm gear and the rolls in the circulating passage in which the rolls on the engagement part on the ball worm gear are positioned participate into the circulation; and thus, the wear is greatly reduced during transmission, and the transmission efficiency is greatly improved. The transmission pair has the advantages of the conventional worm gear and worm, and also has the advantages of small wear, long service life, high efficiency and low energy consumption. When an arc-surface roll worm is adopted, a plurality of rows of rolls are simultaneously engaged and can be used for heavy equipment with high bearing capacity; the pre-pressing technology can be adopted to eliminate a back clearance during reverse rotation; and the transmission pair can be used for precise automatic equipment.
Description
Technical field
The present invention relates to a kind of drive structure of gear worm, equidistant distribution zanjon ball orbit on the transmission Surface of action of worm gear, the zanjon ball orbit connects the ball-recirculation passage, ball can be in zanjon ball orbit and ball-recirculation passage circulating rolling; On the worm screw cylindrical Surface of action spiral ball orbit is arranged; Worm and gear is by the ball engagement driving.
Background technique
The transmission of worm and worm wheel is called worm drive, worm drive is a kind of basic mechanical structure, the motion and the power that are used for two space alternating axiss of transmission,, compact structure big because of its reduction speed ratio, stable working, noiseless, can damping vibration, can 90 degree break-ins etc. advantage, in various retarding devices and mechanical transmission, be widely used.Worm drive is that transmission is carried out in friction by the teeth face between the worm and worm wheel, so its intrinsic shortcoming is that wearing and tearing are big, transmission efficiency is low, precision is poor, and working life is short, energy consumption is high.In the common cylindrical worm gearing transmission process, have only 1-2 tooth carrying driving force, thus its bearing capacity a little less than, should not be used for large-scale jumbo.In order to overcome this deficiency, ring surface enveloped worm screw technology has appearred, the number of teeth of worm and worm wheel engagement increases in transmission process, it is big that bearing capacity becomes, but worm gear and toroid helicoids worm remain by the gear tooth friction of worm and gear and come transmission, thereby common worm geared wearing and tearing are big, transmission efficiency is low etc., and problem still exists.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of novel ball worm and gear transmission is provided, this structure is except the advantage with traditional worm and gear, it is little also to have wearing and tearing, the efficient height, advantage of low energy consumption, in order to reach this target, technological scheme of the present invention is achieved in that
A kind of ball worm and gear transmission is made up of ball worm gear, ball and ball worn, and the ball worm gear comprises ball carrier wheel and both sides end cap, and ball worn can adopt cambered surface ball worn or cylinder ball worn; On the transmission engagement outer peripheral surface of ball carrier wheel, the zanjon ball orbit that equidistantly distributes is arranged, the zanjon ball orbit is the uncovered groove of round bottom, its degree of depth is greater than the ball radius, opening is less than ball diameter, and ball can smooth and easy rolling in the zanjon ball orbit, and can not drop out from zanjon ball orbit opening, the spacing of zanjon ball orbit equals the pitch of spiral ball orbit on the ball worn, and the angle of lead of zanjon ball orbit is determined according to the worm screw type that adopts; The ball-recirculation passage is arranged on the ball worm gear, every corresponding zanjon ball orbit of ball-recirculation passage, ball adopts the single cycle mode, i.e. every capable ball circulation separately in the ball-recirculation passage of oneself; Every ball-recirculation passage is connected to connect by the radial circulation passage of axial circulation passage and both sides and forms, the axial circulation passage is parallel with ball carrier wheel axis, two ends connect the radial circulation passage of both sides respectively, the radial circulation passage of both sides is connected to the zanjon ball orbit, the fillet processing is carried out in turning and joint, makes ball rolling and circulation turn to smooth and easy; In every ball-recirculation passage of ball worm gear and zanjon ball orbit, fill ball, ball can be in zanjon ball orbit and ball-recirculation passage circulating rolling; Outer peripheral surface at ball worn has the spiral ball orbit, and the pitch of spiral ball orbit equates; The spiral ball orbit is the round bottom open groove, and ball can coincide and light smooth and easy rolling therein with the spiral ball orbit; The distance of appropriate design ball worm gear central shaft and ball worn central shaft, the part that the ball on the ball worm gear is exposed in the zanjon ball orbit can just in time mesh with the spiral ball orbit of worm screw; When ball worn rotated, the ball that the spiral ball orbit promotes engagement rolled, and promoted the ball worm gear when ball self rolls and rotated.
Described a kind of ball worm and gear transmission, half surface at ball carrier wheel of the radial circulation passage of ball worm gear, half is on the surface of end cap, when end cap and ball carrier wheel location correspondence combine, two-part radial circulation passage just in time merges complete radial circulation passage of formation, ball smooth and easy rolling therein.
Described a kind of ball worm and gear transmission, when ball carrier wheel diameter was big, adjacent shaft can be on the same circle in the center of circle with the carrier wheel axis to the cross section center of circle of circulation canal, perhaps on the different circle; When ball carrier wheel diameter hour, the cross section center of circle of adjacent ball axial circulation passage can not be on the same circle in the center of circle with the carrier wheel axis, and is too near to the circulation canal distance to avoid adjacent shaft, reduces the intensity of ball carrier wheel.
Described a kind of ball worm and gear transmission, when ball worn adopted hourglass worm, the profile of cambered surface ball worn was that concave circular arc centers on the turning surface that worm axis is rotarily formed, the diameter of concave circular arc equals ball carrier wheel diameter; The angle of lead of the zanjon ball orbit of ball worm gear equals the spiral ball orbit angle of lead that worm screw calculates with the thinnest place; Spiral ball orbit on the cambered surface ball worn is handled by the processing of correction of the flank shape technology, can mesh the multirow ball simultaneously; The cambered surface ball worn forms envelope to the ball worm gear.
Described a kind of ball worm and gear transmission, when ball worn adopted cylindrical worm, the angle of lead of the zanjon track of ball worm gear equaled the angle of lead of the spiral ball orbit on the cylinder ball worn.
Described a kind of ball worm and gear transmission, zanjon ball orbit spacing on the ball worm gear refers to the arc length on the ball worm gear outer peripheral surface between the two zanjon ball orbit center lines, spiral ball orbit pitch on the cylinder ball worn refers to the length on the ball worn axis between adjacent two all spiral ball orbit center lines, and the spiral ball orbit pitch on the cambered surface ball worn refers to the arc length on the ball worn cambered surface between adjacent two all spiral ball orbit center lines.
Described a kind of ball worm and gear transmission, when ball worn monofilament road designs, on the ball worn on the pitch of spiral ball orbit and the ball worm gear spacing of zanjon ball orbit equate; When ball worn multifibres road designed, the pitch of spiral ball orbit was the integral multiple of zanjon ball orbit spacing on the ball worm gear on the ball worn.
The invention has the beneficial effects as follows: ball worm gear and ball worn are by rotatable ball engagement, compare with traditional worm and gear transmission, friction between the worm and gear is become the rolling friction of ball by the teeth sliding friction, and ball worn is when rotating, has only the ball participant position circulation of mate on the ball worm gear, therefore wear and tear in the transmission process and reduce greatly, transmission efficiency is greatly improved, therefore needed input power equipment power reduction during identical load, the energy consumption in the equipment working procedure reduces.The ball quantity that meshes between ball worm gear and the cambered surface ball worn is many, and the enhancing of bearing capacity several times can be used for heavy duty equipment.Because ball worm gear and cambered surface ball worn have the engagement of multirow ball simultaneously, adopt the precompressed technology during production, the back clearance in the time of can eliminating reciprocal the rotation is so the present invention can be used for the automation equipment of precision drive.
Description of drawings
Fig. 1 is general principles structural drawing of the present invention, also can be used as Figure of abstract.
Fig. 2 is the plan view of general principles structural drawing of the present invention.
Fig. 3 is the left side view of Fig. 2 of the present invention.
Fig. 4 is the complete ball worm gear arrangement schematic representation of the present invention.
Fig. 5 removes the ball worm gear arrangement schematic representation of end cap for the present invention.
Fig. 6 for the present invention not with the ball carrier wheel construction schematic representation of ball.
Fig. 7 is Fig. 6 plan view of the present invention.
Fig. 8 is the top view of Fig. 6 of the present invention.
Fig. 9 is the top view of upside end cap of the present invention.
Figure 10 is the plan view of downside end cap of the present invention.
Figure 11 is cambered surface ball worn structural representation of the present invention.
Figure 12 is cylinder ball worn structural representation of the present invention.
Structural representation when Figure 13 adopts the cylinder ball worn for the present invention.
Plan view when Figure 14 adopts the cylinder ball worn for the present invention.
Figure 15 is the left side view of Figure 14 of the present invention.
Wherein:
1, ball worm gear
1-1, ball carrier wheel
1-2, upside end cap
1-3, downside end cap
1-4, zanjon ball orbit
1-5, radial circulation passage
1-6, axial circulation passage
2, cambered surface ball worn
2-1, hourglass worm spiral ball orbit
3, cylinder ball worn
3-1, cylindrical worm spiral ball orbit
4, ball
5, worm-wheel shaft
6, worm shaft
Embodiment
It is example that present embodiment adopts the cambered surface ball worn with ball worn, and implementation method of the present invention is described by reference to the accompanying drawings.
The structure of cambered surface ball worn 2 as seen from Figure 11, use the concave circular arc turning surface of machined into cambered surface ball worn 2 earlier, the concave circular arc diameter equals the diameter of ball carrier wheel 1-1, then with the uncovered hourglass worm spiral ball orbit 2-1 of specialized nc machine tool configuration round tool processing round bottom.Because it is thin in the middle of cambered surface ball worn 2 two ends are thick, therefore when pitch equates, the angle of lead of helical orbit is unequal in theory, but the correction of the flank shape processing technique by numerical control machine tool, the position of spiral ball orbit on cambered surface moved according to variable element, can process that angle of lead equates, pitch equates, the Normal section is the hourglass worm spiral ball orbit 2-1 of a circumference part.
Fig. 4 has shown the overall structure of ball worm gear, ball worm gear 1 is made up of ball carrier wheel 1-1, upside end cap 1-2, downside end cap 1-3, Fig. 5 has shown the structure composition after the ball worm gear is removed upside end cap 1-2 and downside end cap 1-3, has all filled ball 4 in the ball-recirculation passage of ball carrier wheel 1-1 and the zanjon ball orbit.
Fig. 6, Fig. 7, Fig. 8, Fig. 9 have shown the structure of independent ball carrier wheel 1-1.The zanjon ball orbit 1-4 of ball carrier wheel 1-1 adopts the mode of gear hobbing to process, be divided into two procedures: first step elder generation working depth is slightly larger than the ball orbit of ball radius, this moment, the sword cross section of gear hobbing cutter was semi-circle, arc diameter is slightly larger than ball diameter, and slightly larger in diameter is in order to allow the ball can smooth and easy rolling in ball orbit; Second step processing zanjon track, this moment, the sword cross section of gear hobbing cutter was the arc that is a bit larger tham semicircle, arc diameter equals the arc diameter of first step operation, and the semicircle ball orbit that has formed at ball carrier wheel carries out the single forming cutting, forms zanjon ball orbit 1-4.The degree of depth of zanjon ball orbit 1-4 is greater than the ball radius, and opening is less than ball diameter, so ball can directly not be scattered from plane of trajectory orbital when packing into wherein, and smooth and easy rolling therein.
Drill through the axial circulation passage 1-6 of ball with numerical control drilling machine, axial circulation passage 1-6 is the open-work that is parallel to ball carrier wheel 1-1 axis.In order not reduce the intensity of ball carrier wheel 1-1, adjacent axial circulation passage 1-6 preferably is distributed on the different circles.
With the radial circulation passage 1-5 on numerical control milling machine processing ball carrier wheel 1-1 surface, coupling shaft of radial circulation passage 1-5 is to circulation canal 1-6, and one connects zanjon ball orbit 1-4; Radial circulation passage 1-5 is the uncovered groove of round bottom, and depth ratio ball radius is big slightly, and width is bigger slightly than ball diameter, ball can easily be rolled pass through; Radial circulation passage 1-5 and zanjon ball orbit 1-4, axial circulation passage 1-6 joint are processed into fillet, so that ball-recirculation turns to is smooth and easy.From the plan view of Fig. 7 for ball carrier wheel, as can be seen from the figure, the radial circulation passage 1-5 of upside is that center of circle radial distributes with ball carrier wheel 1-1 axis; Fig. 8 is for the top view of ball carrier wheel, because zanjon ball orbit 1-4 has certain inclination, therefore as can be seen from the figure, trend and the radius of the radial circulation passage 1-5 of downside have a certain degree.
The radial surface circulation canal of upside end cap 1-2 and downside end cap 1-3 also adopts numerical control milling machine to process.Fig. 9 is the top view of upside end cap 1-2, i.e. the radial circulation access diagram of upside end cap 1-2 and ball carrier wheel 1-1 junction plane.As seen from the figure, the radial circulation passage 1-5 of the locations of structures of the radial circulation passage 1-5 of upside end cap 1-2 and ball carrier wheel 1-1 upside is identical, to guarantee corresponding intact merging one by one.Figure 10 is the plan view of downside end cap 1-3, and the radial circulation passage 1-5 of the locations of structures of the radial circulation passage 1-5 of downside end cap 1-3 and ball carrier wheel 1-1 downside is identical.
The step of assembling ball worm gear is such: fix after aliging earlier with downside end cap 1-3 and the coaxial combination of ball carrier wheel 1-1, and radial circulation passage 1-5, ball-recirculation passage and the zanjon ball orbit ball 4 of packing into one by one then is up to all filling.The position of appropriate design axial circulation passage 1-6 can make in ball-recirculation passage and the zanjon ball orbit and just in time hold complete ball 4, mutually near and do not push.Then upside end cap 1-2 and ball carrier are taken turns the coaxial combination of 1-1, and fix behind the alignment radial circulation passage 1-5, just form a complete ball worm gear 1 that has ball.
As Fig. 1, Fig. 2, shown in Figure 3, designing requirement according to worm and gear center square, the ball worm gear 1 that will have ball respectively is installed on the bearing device by vertical 90 degree of bearing with cambered surface ball worn 2, the axis of cambered surface ball worn 2 and ball worm gear 1 center cross-sectional are at grade, hourglass worm spiral ball orbit 2-1 is engaged into the multirow ball of ball worm gear 1, after engagement was good, 2 pairs of ball worm gears of cambered surface ball worn 1 formed envelope, and a plurality of ball 4 engagements of multirow are arranged simultaneously.When cambered surface ball worn 2 rotated, its spiral ball orbit 2-1 promoted a plurality of balls 4 of multirow engagement, and a plurality of balls 4 of engagement promote ball worm gear 1 and rotate around worm-wheel shaft 5 when self rolls.Between cambered surface ball worn 2 and the ball 4, between ball 4 and the ball worm gear 1, be roll contact and rolling friction all, and ball worn is when rotating, have only ball and the ball in the circulation canal of place thereof of mate to participate in circulation on the ball worm gear, with respect to the sliding friction of traditional worm and gear, its friction and wear reduces greatly.The cambered surface ball worn has a plurality of ball engagements of multirow simultaneously, so bearing capacity is big, is suitable for jumbo.In addition, because multirow ball engagement is arranged simultaneously, can adopt the precompressed technology, therefore the back clearance when eliminating back and forth movement can be used for the automation equipment of precision drive.
In the present embodiment, ball worn adopts the cylinder ball worn.
The structure that can be seen the cylinder ball worn by Figure 12 is simple relatively, therefore the manufacturing of cylinder ball worn 3 is also simple relatively, adopt centre numerically controlled lathe to finish, during processing column worm spiral ball orbit 3-1, need to use the sword cross section to be the cutter of round end, with the angle of lead of setting cylindrical blank cylindrical car is become corresponding spiral ball orbit.
Identical among the manufacturing processing method of ball worm gear 1 and the embodiment 1, the ball zanjon track 1-4 on the ball carrier wheel 1-1 and the processing method of ball-recirculation passage are also identical.
As Figure 13, Figure 14, shown in Figure 15, designing requirement according to worm and gear center square, the ball worm gear 1 that will have ball respectively is installed on the bearing device by vertical 90 degree of bearing with cylinder ball worn 3, the axis of cylinder ball worn 3 and ball worm gear 1 center cross-sectional are at grade, cylindrical worm spiral ball orbit 3-1 is engaged into the ball of ball worm gear 1, in different positions, worm and gear has the capable ball engagement of 1-2 simultaneously.When cylinder ball worn 3 rotated, a plurality of balls 4 that cylindrical worm spiral ball orbit 3-1 promotion is meshed, a plurality of balls 4 of engagement promoted ball worm gear 1 and rotate around worm-wheel shaft 5 when self rolls.Between cylinder ball worn 3 and the ball 4, between ball 4 and the ball worm gear 1, be roll contact and rolling friction all, and ball worn is when rotating, have only ball and the ball in the circulation canal of place thereof of mate to participate in circulation on the ball worm gear, with respect to the sliding friction of traditional worm and gear, its friction and wear reduces greatly.
When adopting the cylinder ball worn, with respect to the cambered surface ball worn, the ball line number of engagement is few, so its bearing capacity is less relatively, can only be used for mini-plant.
According to the requirement for bearing capacity of concrete use condition, velocity ratio require, precision requirement, but ball worm and gear transmission seriation, standardized designs, to satisfy the demand of different field, distinct device, different application.
Claims (6)
1. ball worm and gear transmission, it is characterized in that: it is made up of ball worm gear, ball and ball worn, and the ball worm gear comprises ball carrier wheel and both sides end cap, ball worn employing cambered surface ball worn or cylinder ball worn; On the transmission engagement outer peripheral surface of ball carrier wheel, the zanjon ball orbit that equidistantly distributes is arranged, the zanjon ball orbit is the uncovered groove of round bottom, its degree of depth is greater than the ball radius, opening is less than ball diameter, and ball can smooth and easy rolling in the zanjon ball orbit, and can not drop out from zanjon ball orbit opening, the spacing of zanjon ball orbit equals the pitch of spiral ball orbit on the ball worn, and the angle of lead of zanjon ball orbit is determined according to the worm screw type that adopts; The ball-recirculation passage is arranged on the ball worm gear, every corresponding zanjon ball orbit of ball-recirculation passage, ball adopts the single cycle mode, i.e. every capable ball circulation separately in the ball-recirculation passage of oneself; Every ball-recirculation passage is connected to connect by the radial circulation passage of axial circulation passage and both sides and forms, the axial circulation passage is parallel with ball carrier wheel axis, two ends connect the radial circulation passage of both sides respectively, the radial circulation passage of both sides is connected to the zanjon ball orbit, the fillet processing is carried out in turning and joint, makes ball rolling and circulation turn to smooth and easy; In every ball-recirculation passage of ball worm gear and zanjon ball orbit, fill ball, ball can be in zanjon ball orbit and ball-recirculation passage circulating rolling; Outer peripheral surface at ball worn has the spiral ball orbit, and the pitch of spiral ball orbit equates; The spiral ball orbit is the round bottom open groove, and ball can coincide and light smooth and easy rolling therein with the spiral ball orbit; The distance of appropriate design ball worm gear central shaft and ball worn central shaft, the part that the ball on the ball worm gear is exposed in the zanjon ball orbit can just in time mesh with the spiral ball orbit of worm screw; When ball worn rotated, the ball that the spiral ball orbit promotes engagement rolled, and promoted the ball worm gear when ball self rolls and rotated.
2. ball worm and gear transmission according to claim 1, it is characterized in that: half surface at ball carrier wheel of the radial circulation passage of ball worm gear, half is on the surface of end cap, when end cap and ball carrier wheel location correspondence combine, two-part radial circulation passage just in time merges complete radial circulation passage of formation, ball smooth and easy rolling therein.
3. ball worm and gear transmission according to claim 1 is characterized in that: when ball carrier wheel diameter was big, adjacent shaft can be on the same circle in the center of circle with the carrier wheel axis to the cross section center of circle of circulation canal, perhaps on the different circle; When ball carrier wheel diameter hour, the cross section center of circle of adjacent ball axial circulation passage can not be on the same circle in the center of circle with the carrier wheel axis, and is too near to the circulation canal distance to avoid adjacent shaft, reduces the intensity of ball carrier wheel.
4. ball worm and gear transmission according to claim 1, it is characterized in that: when ball worn adopts hourglass worm, the profile of cambered surface ball worn is that concave circular arc centers on the turning surface that worm axis is rotarily formed, and the diameter of concave circular arc equals ball carrier wheel diameter; The angle of lead of the zanjon ball orbit of ball worm gear equals the spiral ball orbit angle of lead that worm screw calculates with the thinnest place; Spiral ball orbit on the cambered surface ball worn is handled by the processing of correction of the flank shape technology, can mesh the multirow ball simultaneously; The cambered surface ball worn forms envelope to the ball worm gear.
5. ball worm and gear transmission according to claim 1 is characterized in that: when ball worn adopted cylindrical worm, the angle of lead of the zanjon track of ball worm gear equaled the angle of lead of the spiral ball orbit on the cylinder ball worn.
6. ball worm and gear transmission according to claim 1 is characterized in that: when ball worn monofilament road designs, on the ball worn on the pitch of spiral ball orbit and the ball worm gear spacing of zanjon ball orbit equate; When ball worn multifibres road designed, the pitch of spiral ball orbit was the integral multiple of zanjon ball orbit spacing on the ball worm gear on the ball worn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010237732 CN102338195B (en) | 2010-07-27 | 2010-07-27 | Ball worm gear and worm transmission pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010237732 CN102338195B (en) | 2010-07-27 | 2010-07-27 | Ball worm gear and worm transmission pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102338195A CN102338195A (en) | 2012-02-01 |
| CN102338195B true CN102338195B (en) | 2013-08-14 |
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ID=45514088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010237732 Expired - Fee Related CN102338195B (en) | 2010-07-27 | 2010-07-27 | Ball worm gear and worm transmission pair |
Country Status (1)
| Country | Link |
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| CN (1) | CN102338195B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578520A (en) * | 2018-11-08 | 2019-04-05 | 电子科技大学 | Rolling friction worm and gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200175U (en) * | 1985-04-01 | 1985-11-10 | 辽宁省大连市新金县四平镇农机厂 | Round cambered surface worm gearing with rollers |
| CN2144733Y (en) * | 1992-05-11 | 1993-10-27 | 康长瑞 | Circulating steel ball worm transmission device |
| CN2544135Y (en) * | 2002-03-18 | 2003-04-09 | 邹军 | Circular ball worm |
| BE1016310A5 (en) * | 2004-11-10 | 2006-07-04 | Technologid | Worm gear transmission, has worm gear mantle surface provided with sockets containing rotating balls |
| CN201731022U (en) * | 2010-07-27 | 2011-02-02 | 朱建彬 | Rolling ball worm gear transmission pair |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060156845A1 (en) * | 2004-12-23 | 2006-07-20 | Davy Tong | Self-Retaining Recirculating Ball-Worm and Gear Device |
-
2010
- 2010-07-27 CN CN 201010237732 patent/CN102338195B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200175U (en) * | 1985-04-01 | 1985-11-10 | 辽宁省大连市新金县四平镇农机厂 | Round cambered surface worm gearing with rollers |
| CN2144733Y (en) * | 1992-05-11 | 1993-10-27 | 康长瑞 | Circulating steel ball worm transmission device |
| CN2544135Y (en) * | 2002-03-18 | 2003-04-09 | 邹军 | Circular ball worm |
| BE1016310A5 (en) * | 2004-11-10 | 2006-07-04 | Technologid | Worm gear transmission, has worm gear mantle surface provided with sockets containing rotating balls |
| CN201731022U (en) * | 2010-07-27 | 2011-02-02 | 朱建彬 | Rolling ball worm gear transmission pair |
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| Publication number | Publication date |
|---|---|
| CN102338195A (en) | 2012-02-01 |
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Granted publication date: 20130814 Termination date: 20170727 |