CN102235423B - Linear transmission assembly with chain - Google Patents
Linear transmission assembly with chain Download PDFInfo
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- CN102235423B CN102235423B CN201010153732.6A CN201010153732A CN102235423B CN 102235423 B CN102235423 B CN 102235423B CN 201010153732 A CN201010153732 A CN 201010153732A CN 102235423 B CN102235423 B CN 102235423B
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Abstract
The invention discloses a linear transmission assembly with a chain, which comprises a long shaft, a movable body, a plurality of rolling pieces and the chain, wherein the outer surface of the long shaft is provided with a rolling channel; the movable body is sleeved on the long shaft, and is provided with a rolling groove; and the chain a strip flexible connection part and a plurality of interval parts. The invention also discloses a chain of the linear transmission assembly, which comprises the strip flexible connection part and a plurality of interval parts. In the linear transmission assembly, a lubricating oil channel is formed along inner sides of contact areas of the rolling pieces and the interval parts, and lubricating oil in non-load areas on the surfaces of the rolling pieces is guided into load areas by utilizing the lubricating oil channel, so that the load areas are lubricated fully and effectively to reduce the abrasion of the rolling channel, the rolling groove and the rolling pieces, maintain the positioning accuracy of the linear transmission assembly and prolong the service life of the linear transmission assembly. Simultaneously, the chain is subjected to injection molding integrally by utilizing upper and lower dies, so that structures of the dies are simplified, the design cost is reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to a kind of Linear transmission assembly with chain.
Background technique
Linear transmission assembly mainly comprises linear slide rail, ball screw etc., is applied on the equipment such as toolroom machine, electronics, automation, semiconductor.The roll piece of Linear transmission assembly is spherical in shape or cylindrical, be commonly called as ball or roller, its rolling path and unlike rolling bearing on a circular track, move like that only, but need to complete via one section of return flow path that does not bear Linear transmission assembly load (external force) Infinite Cyclic of whole roll piece in the process of motion.Due to the circulating path of roll piece be not one simple circular, therefore, each roll piece in order to the linear transmitting assemblies in interval, make the chain mutually not colliding between each roll piece, need to have good flexible, easily distortion, and easy-rupturing not, this on design and manufacture all quite difficulty, with the retainer of the rolling bearing of manufacturing by on-deformable material be diverse.
Existing being applied in Linear transmission assembly, in order to the chain of each roll piece of interval as shown in Figure 1, this figure is the chain that links many independent spacer blocks, chain in figure is connected the flexible coupling chain 512 of spacer block 511 use, and each roll piece 110 is placed in the space that two adjacent spacer blocks 511 and coupling chain 512 form and rolls.Mode of connection for spacer block 511 and coupling chain 512, if spacer block 511 combines with the mode of coupling chain 512 with assembly, need a large amount of manpowers to carry out assembly, for example No. 2005-121208, Japanese patent of invention JP, if spacer block 511 is designed to one with coupling chain 512, viewpoint from Design of Dies, the surface of spacer block 511 is designs of indent, therefore must produce overhead kick (undercut) during the demoulding, die and spacer block 511 cannot be release smoothly because interfering, forced stripper mechanism has the restriction in size, and can cause assembly distortion, and take the die that roll piece is plastic injection, produce, for example No. 5-52217, Japanese patent of invention Unexamined Patent, have the problem that manufacturing efficiency is not good and roll piece is surperficial lubricant oil is easily struck off.Therefore, the chain of Fig. 1, its design has serious shortcoming, needs to improve.
Fig. 2 is the chain 61 of another kind of Linear transmission assembly, for example No. 2006-070958, Japanese patent of invention JP, its Linear transmission assembly is provided with roll piece 110, this chain 61 is provided with plural space bar 611, each space bar 611 both sides are respectively used a coupling chain 612 to link, wherein 611 difference of adjacent space bar can an accommodating roll piece 110, makes the roll piece (not shown) contact that roll piece 110 discord are adjacent, to avoid producing possible friction and shock.Although this design has die sinking, but because be provided with round hole 613 on space bar 611, its Design of Dies is used a diameter is small and length is quite long cylindrical body as die, after ejection formation before finished product will eject, must first the die of cylindrical shape be detached, now just must use complicated driving mechanism that cylindrical body is derived, yet finished product can be closely coated with cylindrical body after cooling contraction, make to detach more difficult, the action simultaneously detaching can cause finished product distortion to produce burr, and also may there is afterwards the problem of distortion in turnover several times repeatedly in cylindrical body, secondly, in ejection formation, penetrate pressure quite large, so elongated cylindrical body is quite easily because being subject to crunch to cause distortion or fracture.Therefore, the configuration of the chain 61 of the roll piece 110 of Fig. 2, its production difficulty is also very high, and mould is complicated simultaneously, and development cost is expensive.In addition, be also comprehensive engagement, and contact area is the circle of a sealing, and is line contact between the internal diameter in the roll piece 110 of this design and circle hole 613, contact is large, therefore oil film is difficult for passing through surface of contact, and lubricant grease is also easily struck off.Therefore, the design of Fig. 2 has the problem that manufacturing efficiency is not good and roll piece is surperficial lubricant oil is easily struck off equally.
Separately, when above-mentioned roll piece 110 rolls along linear track in linear transmitting assemblies, load area 111 is defined as on this roll piece 110 has with rolling rail the region contacting, and this load area 111 is roughly the region (as Fig. 1 and Fig. 2 roll piece surface oblique line part) of a ring-type.Because this load area 111 contacts with track, and there is sizable pressure and be present in (when especially Linear transmission assembly is subject to external force) between roll piece and track, so load area 111 certainly will need sufficient lubricant oil to lubricate, just can avoid roll piece 110 surfaces or track to produce abrasion, if lack of lubrication, to produce the precision reduction of Linear transmission assembly or the problem of the lost of life, serious also can cause the damage of Linear transmission assembly.Yet, because load area 111 continues to contact with track, lubricant oil on it is constantly extruded and is squeezed the region of load area 111 both sides, make the region of roll piece 110 surfaces beyond load area 111 have lubricant oil to adhere to, and this region does not need to lubricate in fact, but really needing load area 111 surfaces of lubricated ring-type, most lubricant oil be removed after a bit of time of rolling on the contrary, causes lubrication effect bad.In addition, the spacer block 511 of above two kinds of chains or space bar 611 and roll piece 110 contact or ring-like contact for face, therefore when roll piece 110 rolls, on the load area 111 that roll piece contacts with track, accompanying lubricant oil can be spaced apart piece 511 or space bar 611 strikes off, and cause the load area 111 that roll piece contacts with track cannot attach lubricant oil, relative, the problem of roll piece and raceway surface abrasion also occurs thereupon.Person more very, the service condition of some Linear transmission assembly is very special, motion repeatedly under utmost point short stroke, cutter such as general endoporus grinding and drilling machine bores action etc., now the same area of roll piece 110 is squeezed repeatedly, and the lubricant oil on surface is by excessive rarefied and seriously increase undesired abrasion.The chain of existing Linear transmission assembly has necessity of improvement really.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Linear transmission assembly with chain, and it can reduce the abrasion of roll piece and raceway surface, the positioning precision of Assurance component, extend the working life of assembly, meanwhile, can also reduce the design cost of chain mould, improve the manufacturing efficiency of mould.
For solving the problems of the technologies described above, Linear transmission assembly of the present invention, comprising:
One major axis, is strip, and outer surface is provided with sliding channel;
One moving body, is set on major axis, and this moving body is provided with the rolling groove of relative sliding channel, between sliding channel and rolling groove, forms load path, and continue the respectively two ends of return flow path, load path two ends, form Infinite Cyclic path;
Plural number roll piece, in Infinite Cyclic path, move, and moving body can back and forth be moved with respect to major axis, sliding channel and the rolling groove contact of getting along well in return flow path of this roll piece, and contact with sliding channel and rolling groove respectively, and bear load, the track that this roll piece contacts with sliding channel and rolling groove rolling in load path, be the load area of roll piece, be approximate circle ring-type;
One chain, be contained in Infinite Cyclic path, comprise the flexible linking department of strip and plural interval parts, this linking department is arranged interval parts fixedly connected be uniformly-spaced, between adjacent spaces portion, form holding area, with accommodating roll piece, wherein the contact area of roll piece and adjacent spaces portion comprises two not interconnective circular arcs.
The central angle of described circular arc approximates 90 degree, and forms grease channel along the inner side of this circular arc.This grease channel and load area are connected, and make lubricant oil through the load area of the lubricated roll piece of this grease channel.
Described interval parts is provided with two holders and a link.This link is lamellar, and its edge connects two holders, makes to be pliability between two holders, and two these holders are separately positioned on the both sides of the load area of roll piece.This link has the first gap along axial end face and roll piece.The contact area of holder and roll piece forms this circular arc.
The quantity of described linking department is two, plane through two linking departments is defined as guiding face simultaneously, two holders are separately positioned on the both sides of this guiding face, perpendicular to this guiding face and by face centered by the curve surface definition at each interval parts center, two these holder systems are separately positioned on the both sides of this median plane, and the median plane of the end face of holder and the intersection point of link and roll piece has the second gap.
The surface discord roll piece comprehensive engagement of described holder.
Another technical problem that the present invention will solve is to provide a kind of chain of Linear transmission assembly, and it can not strike off the lubricant oil on roll piece surface, and its mould structure is simple, and manufacturing efficiency is high.
For solving the problems of the technologies described above, the chain of Linear transmission assembly of the present invention, comprise: the linking department that strip is flexible and a plurality of interval parts, this linking department is arranged the fixedly connected equi-spaced apart that is of this interval parts, between adjacent spaces portion, form holding area with the roll piece of accommodating this Linear transmission assembly, wherein this interval parts is provided with neither interconnective circular-arc holder, and this holder is in order to contact with the roll piece of this Linear transmission assembly, to keep the roll piece of this Linear transmission assembly.
Compared with prior art, the present invention has following beneficial effect:
When 1, the holder of chain holder relative to roll piece slides, oil slick thickness gradually from large to small, produces the effect of hydrodynamic pressure hydrodynamic lubrication.
2, grease channel can direct into load area by the lubricant oil of non-loading zone, roll piece surface, load area can be lubricated fully, thereby can reduce the abrasion of sliding channel, rolling groove and roll piece, maintain the positioning precision of Linear transmission assembly, and extend the working life of assembly.
3, chain upper/lower die Unitary injection formed, can not produce overhead kick during die sinking, therefore, the surface of chain is smoother, thereby makes the operation of chain more smooth and easy, simultaneously, the structure of mould is simplified, thereby has reduced the cost of mould development design, and chain can be produced in a large number.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation:
Fig. 1 is the overlooking and side view of chain of the first prior art;
Fig. 2 is the stereogram of the chain of the second prior art;
Fig. 3 is stereoscopic figure of the present invention;
Fig. 4 is that chain of the present invention is in the phase diagram of the Infinite Cyclic path of linear transmitting assemblies operation;
Fig. 5 is the stereogram of chain of the present invention;
Fig. 6 is the stereogram of chain installing roll piece of the present invention;
Fig. 7 is the side view of chain installing roll piece of the present invention;
Fig. 8 is the top view of chain installing roll piece of the present invention;
Fig. 9 is the end elevation of chain installing roll piece of the present invention;
Figure 10 is the grease channel schematic diagram of chain installing roll piece of the present invention.
In figure, description of reference numerals is as follows:
110: roll piece 111: load area 511: spacer block
512: coupling chain 61: chain 611: space bar
612: coupling chain 613: circle hole
1: major axis 11: sliding channel 2: moving body
20: mobile body 201: return port 202: rolling groove
21: steering assembly 211: turning path 4: chain
41: linking department 42: interval parts 421: link
4211: end face 422: holder 4221: end face
4222: intersection point 43: holding area 5: roll piece
51: load area (oblique line part) 52: median plane
90: load path A: return flow path D: the second gap
E: guiding face G: grease channel G1～G6: grease channel
Q: angle T: the first gap TO: contact area
X: axle direction YU: central angle
Embodiment
For technology contents of the present invention, feature and effect being had more specifically, understand, existing in conjunction with illustrated mode of execution, details are as follows:
Refer to shown in Fig. 3 to Fig. 9, the Linear transmission assembly with chain of the present invention, comprises major axis 1, moving body 2, roll piece 5 and chain 4 etc.
Wherein, major axis 1 is strip, on this major axis 1 outer surface, has sliding channel 11, and the section profile of sliding channel 11 is approximately similar to the profile of roll piece 5, to facilitate roll piece 5 to roll on sliding channel 11.If roll piece 5 is a ball, the section profile of sliding channel 11 semicircular in shape roughly, if roll piece 5 is a roller, the section profile of sliding channel 11 is roughly a V font.Embodiment in Fig. 3 is a linear slide rail, and the cross section of its major axis 1 is rectangle, and sliding channel 11 is a straight line.But for a ball screw (not demonstrating), the cross section of its major axis 1 is rounded, and sliding channel 11 is a helix.
As shown in Figure 3, moving body 2, is set on major axis 1, and this moving body 2 can be separated into steering assembly 21 totally three combinations of moving body 20 and its both sides, and in order to explanation and convenient manufacture, but three can be integrative-structure while implementing.As shown in Figure 4, moving body 2 is provided with the rolling groove 202 of relative sliding channel 11, rolling groove 202 in embodiment is arranged on mobile body 20, rolling groove 202 is wherein that section profile is similar in appearance to the structure of sliding channel 11, just for convenient difference when illustrating, especially will on major axis 1, be called sliding channel 11, and will on moving body 2, be called rolling groove 202, this sliding channel 11 and rolling groove 202 form a load path 90 relatively, in this region, roll piece 5 can bear the load from 202 of sliding channel 11 and rolling grooves, and moving body 2 can back and forth move with respect to major axis 1, namely when moving body 2 is subject to external force, roll piece 5 is clipped between moving body 2 and major axis 1, to moving body 2 and major axis 1, provide a reaction force that balances external force.On mobile body 20, can separately be provided with the return port 201 passing through for roll piece 5, as shown in Figure 4, return port 201 is for running through the hole of mobile body 20 both ends of the surface for example.Embodiment in Fig. 3 is a linear slide rail, and its rolling groove 202 is a straight line, but for a ball screw (not demonstrating), its rolling groove 202 is a helix.
Plural number roll piece 5, is placed in this Infinite Cyclic path, moves, and moving body 2 can back and forth be moved with respect to major axis 1 in this Infinite Cyclic path.Refer to Fig. 4, sliding channel 11 and rolling groove 202 contacts of getting along well in return flow path A of this roll piece 5, and contact and can bear load with sliding channel 11 and rolling groove 202 respectively in load path 90.And coordinated by Fig. 6, Fig. 8 and Fig. 9, can between sliding channel 11 and rolling groove 202, rolling by display scrolling part 5, contact trace when roll piece 5 rolls is roughly a circular region, is called load area 51.
One chain 4, be contained in this Infinite Cyclic path, comprise the flexible linking department of at least one strip 41 and plural interval parts 42, linking department 41 is arranged interval parts 42 fixedly connected be uniformly-spaced, and 42, adjacent spaces portion forms holding areas 43, with accommodating roll piece 5, though linking department 41 can only have one, but for making the connectivity of chain 4 best, linking department 41 can be designed to two, and is symmetricly set on the both sides of each interval parts 42.Refer to Fig. 5, this interval parts 42 comprises a connection piece 421 and two holders 422, and the contact area formation one of holder 422 and roll piece 5 is the contact area TO of circular arc shaped.This link 421 is lamellar, the thickness of link 421 is less than the thickness of holder 422, and link 421 can have multiple design configuration, for example: wave is tabular, circular tabular, strip and irregular tabular etc., and the present embodiment is the circular thin flat plate on excision both sides, as long as have the member that is less than these holder 422 thickness between two holders 422, two holders 422 can be interconnected, be and there is link 421, link 421 outer rims are connected with two holders 422, and 422 of two holders of same interval parts 42 are interconnected, and because link 421 is lamellar, therefore flexibility is good, between two holders 422, be pliability, can coordinate roll piece 5 needs that Infinite Cyclic is moved to be betwixt out of shape.
Consult shown in Fig. 7 and Figure 10, wherein, the contact area TO of roll piece 5 and adjacent spaces portion 42 comprises two and is not interconnectively circular-arc region, because two circular arcs do not interconnect, therefore the central angle summation of two circular arcs must be less than 360 degree, the result of mean allocation, the central angle YU that is each circular arc is less than 180 degree, and it preferably designs is that to approximate 90 degree (be quadrant for the central angle YU of circular arc, referring to Figure 10), so that contact area TO can guide maximum magnitude interregional lubricant oil, and lubricant oil is directed into the load area 51 of roll piece 5.Separately refer to shown in Fig. 7,5 comprehensive engagements of the surface of holder 422 discord roll piece, and point of contact is wedge type and is beneficial to hydrodynamic pressure hydrodynamic lubrication.In Fig. 7, the outer surface of holder 422 is a cylndrical surface, it is convex arc surface, because the rolling surface of roll piece 5 is also convex surface, when therefore roll piece 5 slides (non-rolling) with respect to holder 422, oil slick thickness produces the effect of hydrodynamic pressure hydrodynamic lubrication by diminishing gradually greatly, make after the surface sliding friction of roll piece 5 and holder 422, and the oil film of thin layer still can be possessed in roll piece 5 surfaces.For reaching the outer surface of holder 422, the outer surface of holder 422 can be designed to non-concave curved surface or than the profile radius of curvature of roll piece 5 large recessed surface also, non-recessed surface wherein comprises convex surface and plane, when the outer surface of holder 422 is during more close to the profile of roll piece 5, more need to control manufacture accurate, therefore better with the manufacture stability of non-concave curved surface.
As shown in Figure 8, definition is axle direction X along the long axis direction of the flexible linking department 41 of strip.As shown in Figure 9, the plane through two linking departments 41 is defined as guiding face E simultaneously, and median plane 52 is defined as the center by each interval parts 42, and vertical (being quadrature) is in the plane of guiding face E.The present invention is in order to reduce the structure of design cost and the simplification mould of mould, the mould of chain 4 only need can be by chain 4 ejection formations by upper/lower die, its mould is along guiding face E parting, two holders 422 of its each interval parts 42 are positioned at the both sides of median plane 52, and be separately positioned on the both sides up and down of guiding face E, make two holders 422 of each interval parts 42 (lay respectively at first for being crisscross arranged, three quadrants or second, four-quadrant), when die sinking, can not produce overhead kick and destroy chain 4 bodies, and the structure of slide block need be set in mould, significantly reduce design cost.And the present invention is in order to allow the easier demoulding of chain 4, by the end face 4221 at holder 422 and 52 design one this angle of angle Q(Q of median plane, between 1 to 7 degree, be best), in Fig. 9, this angle Q is expanded outwardly by guiding face E, can allow chain 4 easier when the demoulding, and can not produce interference, chain 4 surfaces also can be comparatively level and smooth, and chain 4 surface smoothings, while moving in the Infinite Cyclic path of linear transmitting assemblies, just can not interfere with Infinite Cyclic Path generation, make chain 4 operations more smooth and easy.
Separately, please consult especially shown in Fig. 4, Fig. 8, Fig. 9 and Figure 10, Fig. 4 is the phase diagram that chain moves in Infinite Cyclic path, and Fig. 8 to Figure 10 is respectively top view and the end elevation of the chain 4 that roll piece 5 is housed.From the partial enlarged drawing of Fig. 8, can learn, this link 421 has the first gap T along the end face 4211 of axle direction X with roll piece 5, and this first gap T can make that lubricant oil is expedite to be passed through.
In addition, refer to shown in Figure 10, this roll piece 5 is a spheroid, and itself and holder 422 contacting points form a circular-arc contact area TO, along the inner side of this contact area TO, forms a grease channel G.At roll piece 5, take the horizontal line of Figure 10 while rotating as axle center, the lip-deep load area 51 of roll piece 5 is one circular (as oblique line part).From Figure 10, when roll piece 5 rotates from bottom to top, the lip-deep lubricant oil of roll piece 5 moves from bottom to top, and formation grease channel G1, G2 and G3 etc., lubricant oil is attached to the surface of roll piece 5, and after moving upward, because during close to the circular-arc contact area TO of upside, grease channel G1, G2 and G3 deflection to the right and arrive the lip-deep load area 51 of (linking) roll piece 5, therefore, grease channel G1, G2 and G3 can direct into load area 51 by the lubricant oil of the non-loading zone load on roll piece 5 surfaces (left side), load area 51 can be lubricated fully.Conversely, when roll piece 5 rotates from top to bottom, the lip-deep lubricant oil of roll piece 5 moves from top to bottom, and formation grease channel G4, G5 and G6 etc., lubricant oil is attached to the surface of roll piece 5, and after moving downward, because close to the circular-arc contact area TO of downside, grease channel G4, G5 and G6 deflection left and arrive the lip-deep load area 51 of (linking) roll piece 5, therefore, grease channel G4, G5 and G6 direct into load area 51 by the lubricant oil of the non-loading zone load on roll piece 5 surfaces (right side), load area 51 can be lubricated fully.Can the lip-deep load area 51 of effectively lubricating roll piece 5 no matter roll piece 5 rolls all forward or backwards, roll piece 5 is lubricated fully.Wherein, the passage G of this lubricant oil comprises each grease channel G1, G2, G3, G4, G5 and G6 etc., arrow in Figure 10 represents the flow direction of grease channel G, and each grease channel is roughly C font, and grease channel G flows through the load area 51(of roll piece 5 as oblique line part).When this load area 51 rotates in holding area 43, can supplement enough lubricant oil by grease channel G lubricates, and can not strike off the accompanying lubricant oil of load area 51 of roll piece 5, make lubricant oil on roll piece 5, form a complete lubricant film, to reduce the frictional force between sliding channel 11, rolling groove 202 and roll piece 5 threes.Therefore, the present invention can overcome the shortcoming of prior art, makes the load area 51 of roll piece 5 can obtain sufficient lubricating, and to maintain the positioning precision of Linear transmission assembly, and extends the working life of linear transmitting assemblies.
It is worth mentioning that, in the present embodiment, two holders 422 of chain are separately positioned on the both sides of the load area 51 of roll piece 5, make the both sides of load area 51 all have grease channel G, to guide the lubricant oil of load area 51 both sides of roll piece 5.Although 42 of this interval parts arrange a holder 422 and also can implement, and can reduce the lubrication effect to roll piece 5.
In addition, for larger with the area that load path 90 contacts in response to some roll piece 5, relative, the load area 51 of roll piece 5 is also larger, therefore, also need to have larger grease channel G between roll piece 5 and interval parts 42, the present invention can be offset one second clearance D with the median plane 52 of roll piece 5 by the end face 4221 of holder 422 and the intersection point 4222 of link 421, can strengthen grease channel G, to meet the demand of aforementioned roll piece 5.
Combine institute above-mentioned, the present invention has overcome the problem that chain mould manufacturing efficiency is not good and roll piece surface lubrication oil is easily struck off of prior art, has preferably application.
The above embodiment, is of the present invention for illustrating, not in order to limit the present invention, therefore, the variation of every numerical value and the displacement of equivalent elements, must belong to scope of the present invention.
Claims (9)
1. with a Linear transmission assembly for chain, it is characterized in that, comprising:
One major axis, is strip, and outer surface is provided with sliding channel;
One moving body, is set on major axis, and this moving body is provided with the rolling groove of relative sliding channel, between sliding channel and rolling groove, forms load path, and continue the respectively two ends of return flow path, load path two ends, form Infinite Cyclic path;
Plural number roll piece, in Infinite Cyclic path, move, and moving body can back and forth be moved with respect to major axis, sliding channel and the rolling groove contact of getting along well in return flow path of this roll piece, and contact with sliding channel and rolling groove respectively, and bear load, the track that this roll piece contacts with sliding channel and rolling groove rolling in load path, be the load area of roll piece, be approximate circle ring-type;
One chain, be contained in Infinite Cyclic path, comprise the flexible linking department of strip and plural interval parts, this linking department is arranged interval parts fixedly connected be uniformly-spaced, between adjacent spaces portion, form holding area, with accommodating roll piece, this interval parts comprises a connection piece and two holders, the outer surface of holder is a cylndrical surface, wherein the contact area of roll piece and an adjacent Ge interval parts comprises two not interconnective circular arcs, the inner side of this circular arc forms grease channel, and the quantity of described linking department is two, plane through two linking departments is defined as guiding face simultaneously, two holders are separately positioned on the both sides of this guiding face, perpendicular to this guiding face and the plane by each interval parts center, be defined as median plane, two these holders are separately positioned on the both sides of this median plane.
2. Linear transmission assembly as claimed in claim 1, is characterized in that: the best angle of the central angle of described circular arc is 90 degree.
3. Linear transmission assembly as claimed in claim 1, is characterized in that: described link connects two holders, and the contact area of holder and roll piece forms this circular arc.
4. Linear transmission assembly as claimed in claim 3, is characterized in that: described link is lamellar, and its edge connects two holders, makes to be pliability between two holders, and two these holders are separately positioned on the both sides of the load area of roll piece.
5. Linear transmission assembly as claimed in claim 3, is characterized in that: the median plane of the end face of described holder and the intersection point of link and roll piece has the second gap.
6. Linear transmission assembly as claimed in claim 2, is characterized in that: described grease channel and load area are connected, and makes lubricant oil through the load area of the lubricated roll piece of this grease channel.
7. Linear transmission assembly as claimed in claim 3, is characterized in that: described link has the first gap along axial end face and roll piece.
8. Linear transmission assembly as claimed in claim 3, is characterized in that: the surface discord roll piece comprehensive engagement of described holder, and point of contact is wedge type in order to hydrodynamic pressure hydrodynamic lubrication.
9. the chain of a Linear transmission assembly, it is characterized in that, comprise: the linking department that strip is flexible and a plurality of interval parts, this linking department is arranged the fixedly connected equi-spaced apart that is of this interval parts, between adjacent spaces portion, form holding area with the roll piece of accommodating this Linear transmission assembly, wherein this interval parts is provided with neither interconnective circular-arc holder, the outer surface of this holder is a cylndrical surface, and this holder contacts with the roll piece of Linear transmission assembly, and the quantity of described linking department is two, plane through two linking departments is defined as guiding face simultaneously, two holders are separately positioned on the both sides of this guiding face, perpendicular to this guiding face and the plane by each interval parts center, be defined as median plane, two these holders are separately positioned on the both sides of this median plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010153732.6A CN102235423B (en) | 2010-04-23 | 2010-04-23 | Linear transmission assembly with chain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010153732.6A CN102235423B (en) | 2010-04-23 | 2010-04-23 | Linear transmission assembly with chain |
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| CN102235423A CN102235423A (en) | 2011-11-09 |
| CN102235423B true CN102235423B (en) | 2014-03-19 |
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| CN201043568Y (en) * | 2007-05-14 | 2008-04-02 | 精浚科技股份有限公司 | Structure of rolling component keeper |
Non-Patent Citations (1)
| Title |
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| JP特开2003-239964A 2003.08.27 |
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| CN102235423A (en) | 2011-11-09 |
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