CN103697130A

CN103697130A - Nut rotating type linear transmission element

Info

Publication number: CN103697130A
Application number: CN201210368258.8A
Authority: CN
Inventors: 张哲纲; 江宗宪
Original assignee: Hiwin Technologies Corp
Current assignee: Hiwin Technologies Corp
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2014-04-02
Anticipated expiration: 2032-09-28
Also published as: CN103697130B

Abstract

The invention discloses a nut rotating type linear transmission element, which comprises a rod shaft, a nut, an outer sleeving piece and an annular sleeving piece, wherein the nut is sleeved on the rod shaft; the outer edge surface of the nut is provided with an annular outer rolling groove and an annular step part; the annular step part is provided with a sleeving surface and an end face; the outer sleeving piece is provided with a through hole sleeved with the nut; the inner edge surface of the through hole is provided with a first inner rolling groove opposite to the outer rolling groove; the outer rolling groove and the first inner rolling groove form a first load path; the inner edge surface of the through hole is provided with a second inner rolling groove; the annular sleeving piece is provided with a through hole sleeved with the sleeving surface of the annular step part; the annular sleeving piece is provided with an outer rolling groove opposite to the second inner rolling groove; the second inner rolling groove and the outer rolling groove form a second load path; the first and second load paths are respectively provided with a second rolling piece. The nut rotating type linear transmission element with the structure can ensure that a track surface is not damaged to retain a complete track surface, and has a function of adjusting prepressure to meet the requirement of various industries on prepressure magnitude.

Description

Cap rotating-type Linear transmission element

Technical field

The present invention relates to a kind of Linear transmission element, refer in particular to a kind of cap rotating-type Linear transmission element.

Background technique

Transmission component described in cap rotating-type Linear transmission element is the board that ball screw or roller screw are often used in long stroke, previously mainly with drive screw and then the displacement of drive nut, but because screw rod is long, easily have the problems such as the sagging and critical speed of rotation of deadweight is too low, easily derivative action has some setbacks and the too short problem of life of product, and power source drives the cap rotation of transmission component, nut is with the displacement of movable bed platform again, therefore the resonance phenomenon producing in the time of can avoiding power source to drive the screw rod of transmission component, and the critical speed of rotation of raising transmission component, to meet the demand of various boards, and cap rotating-type Linear transmission element as the term suggests install exactly bearing on the existing nut of script transmission component, and the outer shroud of this bearing and board are fixed, interior ring is fixed on this nut, therefore power source can drive this nut, make this cap rotation and relatively screw rod do linear reciprocation operation, reach the object that drives bed platform.

Just as, TaiWan, China is announced I254106 Patent Case, is just one of form of a kind of cap rotating-type transmission component, and this Patent Case problem that mainly wish solves is: the packing problem of cap rotating-type transmission component.For this problem, the technical way proposing is to be provided with the through hole of filling ball in bearing sleeve, to facilitate, fill ball to ring around groove, yet, because being set, the plane of trajectory orbital that this through hole makes this ring around groove produces a breakage spot, and must fill up this breakage spot with a fixed block, but it is very smooth-going that this fixed block often cannot make that breakage spot fills up, and generation offset, and the generation of this offset can make the have some setbacks pause and transition in rhythm or melody sense and produce vibration of ball when operation, therefore significantly reduced the positioning precision of transmission component, and vibration one produces, and abrasion also can be more and more serious in the course of time, therefore also shortened the working life of transmission component simultaneously, moreover, the setting of this fixed block has also reduced the load carrying capacity of transmission component, reason is: the load carrying capacity of transmission component just depends on the number that ball contacts with plane of trajectory orbital, even if therefore fill up this breakage spot by this fixed block, and this breakage spot after filling up does not have the ability of being loaded, only prevent that ball from dropping out the ability of ring around groove, therefore the load carrying capacity that this through hole has relatively also reduced transmission component is set more, comprehensive aforementioned, the design of this prior art is part to be improved still.

Summary of the invention

The object of the present invention is to provide a kind of cap rotating-type Linear transmission element, its assembling structure can make plane of trajectory orbital produce without breakage, to retain a complete plane of trajectory orbital.

Another object of the present invention is to provide a kind of cap rotating-type Linear transmission element, can reach the function of adjusting precompression, to meet various industries for the requirement of precompression size.

In order to reach above-mentioned purpose, solution of the present invention is:

A cap rotating-type Linear transmission element, it comprises:

One bar axle, its structure that is strip, the outer edge surface of this bar axle is provided with spiral helicine rolling groove; One nut, it has the perforation wearing for this bar axle, and the inner edge surface of this perforation is provided with the sliding channel of this rolling groove relatively, and this rolling groove and sliding channel form a load path, and this load path is provided with a plurality of the first roll pieces; The outer edge surface of this nut is provided with the outer rolling ditch of a ring-type, and a side of this outer rolling ditch is provided with a portion of ring-type class, and this portion of ring-type class has one sheathed and end face; One coating part, it has a through hole that is sheathed on this nut, the inner edge surface of this through hole is provided with the first interior sliding channel of this outer rolling ditch relatively, and this outer rolling ditch and the first interior sliding channel form one first load path, and the inner edge surface of this through hole is separately provided with one second interior sliding channel; One ring set part, it has a penetration hole of sheathed that is sheathed on this portion of ring-type class, and this ring set part is provided with the outer rolling groove of this second interior sliding channel relatively, and this second interior sliding channel and outer rolling groove form one second load path; Wherein, this first load path and the second load path are respectively equipped with a plurality of the second roll pieces; This first interior sliding channel and the second interior sliding channel are quadrant arc, and two these quadrant arcs are mutually back to setting; The axial length of this coating part is greater than the axial length of this ring set part.

Above-mentioned ring set part is provided with the fixed hole that a plurality of axle direction run through, the end face of the portion of ring-type class of this nut is provided with a plurality of screw holes, this ring set part is arranged in after this fixed hole by a plurality of screws, and respectively this screw and this screw hole screw togather locking, and this ring set part is fixed on this sheathed.

Between the end face of an axial portion of end face Yu Gai ring-type class of above-mentioned ring set part, be provided with laminar pre-compressing tablet.

Adopt after said structure, the assembling structure of the bearing external member of cap rotating-type Linear transmission element of the present invention, mainly focus on the design of the portion of ring-type class of ring set part and nut, when assembling, first this spiro cap is located to this bar axle, then the first roll piece is arranged to this load path, then using lubricating grease to stick this second roll piece is placed on outer rolling ditch, and be covered with whole outer rolling ditch, moreover, the through hole of this coating part is sheathed on to this nut, make this first interior sliding channel be resisted against this second roll piece, then, using lubricating grease to stick the second roll piece is placed on the outer rolling groove of this ring set part, the penetration hole of this ring set part is sheathed on this sheathed again, and the kenel for fitting tightly between this penetration hole and sheathed, could allow this ring set part firm be arranged at this sheathed, and make relatively this screw hole setting of this fixed hole, now, the second roll piece on this ring set part is resisted against the second interior sliding channel, finally, by a plurality of these screws, be arranged in after this fixed hole, respectively this screw and this screw hole screw togather locking, in addition, by assembling structure of the present invention, also can adjust the first load path by screw, precompression between the second load path and the second roll piece, gapped between the end face of the portion of end face Xu Yugai ring-type class of this ring set part of prerequisite, so, by the locking force of this screw respectively, reach the size of adjusting this gap, if this gap is less, represent this whole the first load path, precompression between the second load path and the second roll piece is larger, otherwise precompression is less, therefore outside assembling structure of the present invention not only can keep complete plane of trajectory orbital, also can reach the function of adjusting precompression, to meet various industries for the requirement of precompression size.

Accompanying drawing explanation

Fig. 1 is the exploded view of the present invention's the first preferred embodiment cap rotating-type Linear transmission element;

Fig. 2 is the constitutional diagram of the present invention's the first preferred embodiment cap rotating-type Linear transmission element;

Fig. 3 is the axle direction sectional view of Fig. 2;

Fig. 4 is the exploded view of the present invention's the second preferred embodiment cap rotating-type Linear transmission element;

Fig. 5 is the sectional view of the present invention's the second preferred embodiment cap rotating-type Linear transmission element;

Fig. 6 is the exploded view of the present invention's the 3rd preferred embodiment cap rotating-type Linear transmission element;

Fig. 7 is the constitutional diagram of the present invention's the 3rd preferred embodiment cap rotating-type Linear transmission element;

Fig. 8 is the axle direction sectional view of Fig. 7.

Primary component symbol description

1 bar axle 11 rolling groove 2 nuts

21 perforation 211 sliding channel 22 outer rolling ditches

23 sheathed of portion of ring-type class 231 232 end faces

24

screw holes

3,3A coating part 31 through holes

311 first interior sliding channel 312 second interior sliding channels

4 ring set part 41 penetration hole 42 outer rolling grooves

43 fixed hole 44 end face 5 first roll pieces

9 second roll piece 6 screw 7 back-flow components

8 pre-compressing tablet 81 hole 90 load paths

100 first load path 101 second load paths

X-axis direction C gap.

Embodiment

In order further to explain technological scheme of the present invention, below by specific embodiment, the present invention will be described in detail.

Refer to shown in Fig. 1 to Fig. 3, for the present invention's the first preferred embodiment, the invention provides a kind of cap rotating-type Linear transmission element, comprise: a bar axle 1, a nut 2, a coating part 3, a ring set part 4, back-flow component 7, a plurality of screw 6, the first roll piece 5 and a plurality of the second roll piece 9;

This bar axle 1, it is extended for the structure of strip towards a direction, and defining this extending direction is axle direction X, and the outer edge surface of this bar axle 1 is provided with spiral helicine rolling groove 11;

This nut 2, it has the perforation 21 wearing for this bar axle 1, the inner edge surface of this perforation 21 is provided with the sliding channel 211 of this rolling groove 11 relatively, this rolling groove 11 and sliding channel 211 form a load path 90, this load path 90 is provided with a plurality of the first roll pieces 5, this first roll piece 5 can be roller or ball, and the present embodiment is ball; The outer edge surface of this nut 2 is provided with the outer rolling ditch 22 of a ring-type, and a side of this outer rolling ditch 22 is provided with a portion of ring-type class 23, and this portion of ring-type class 23 has one sheathed 231 and end face 232, and this end face 232 is provided with a plurality of screw holes 24;

This back-flow component 7, is arranged at this nut 2, and a plurality of these the first roll piece 5 circulating refluxs are provided;

This coating part 3, it has a through hole 31 that is sheathed on this nut 2, the inner edge surface of this through hole 31 is provided with the first interior sliding channel 311 of this outer rolling ditch 22 relatively, this outer rolling ditch 22 and the first interior sliding channel 311 form one first load path 100, the inner edge surface of this through hole 31 is provided with one second interior sliding channel 312 in these first interior sliding channel 311 1 sides, this first interior sliding channel 311 and the second interior sliding channel 312 are quadrant arc, and two these quadrant arcs are mutually back to arranging as shown in Figure 3;

This ring set part 4, it has a penetration hole 41 of sheathed 231 that is sheathed on this portion of ring-type class 23, this ring set part 4 is provided with the fixed hole 43 that a plurality of axle direction X run through, this ring set part 4 is arranged in after this fixed hole 43 by a plurality of screws 6, respectively this screw 6 screws togather locking with this screw hole 24, makes this ring set part 4 be fixed on this sheathed 231; This ring set part 4 is provided with the outer rolling groove 42 of this second interior sliding channel 312 relatively, this second interior sliding channel 312 and outer rolling groove 42 form one second load path 101, this first load path 100 and the second load path 101 are respectively equipped with a plurality of the second roll pieces 9, this second roll piece 9 can be roller or ball, and the present embodiment is ball; Separately, the length of the axle direction X of this coating part 3 is greater than the length of the axle direction X of this ring set part 4, and the length of the axle direction X of this coating part 3 is less than the length of the axle direction X of this nut 2.

For asking, clearly demonstrate implementation feature of the present invention, below illustrate that the present invention commonly uses progressive locating and practical way:

The assembling structure of the bearing external member of cap rotating-type Linear transmission element of the present invention, mainly focus on the design of the portion of ring-type class 23 of ring set part 4 and nut 2, when assembling, first this nut 2 is sheathed on to this bar axle 1, then the first roll piece 5 is arranged to this load path 90, then using lubricating grease to stick this second roll piece 9 is placed on outer rolling ditch 22, and be covered with whole outer rolling ditch 22, moreover, the through hole of this coating part 3 31 is sheathed on to this nut 2, make this first interior sliding channel 311 be resisted against this second roll piece 9, then, use lubricating grease to stick (note: because lubricating grease is that thick shape has stickiness on the outer rolling groove 42 that is placed in this ring set part 4 the second roll piece 9, therefore can be by glutinous outer rolling ditch 22 or the outer rolling groove 42 of being placed in of the second roll piece 9, also because this second roll piece 9 can be arranged in outer rolling ditch 22 or outer rolling groove 42 by any direction arbitrarily, therefore for squelch type transmission component, after the second roll piece 9 must being installed in to chain or being arranged between introns, form a rolling module, the module of this can being rolled is arranged in open outer rolling ditch 22 or outer rolling groove 42, therefore just very simple and convenient while assembling for squelch type transmission component, to shorten assembling time-histories, unlike prior art, need one by one ball and introns or ball and chain be inserted track from so little through hole, therefore can complete assembling in the reasonable time of must expending.), the penetration hole of this ring set part 4 41 is sheathed on this sheathed 231 again, and the kenel for fitting tightly between this penetration hole 41 and sheathed 231, could allow this ring set part 4 firm be arranged at this sheathed 231, and relative this screw hole 24 of this fixed hole 43 is arranged, now, the second roll piece 9 on this ring set part 4 is resisted against the second interior sliding channel 312, finally, by a plurality of these screws 6, be arranged in after this fixed hole 43, respectively this screw 6 screws togather locking with this screw hole 24, in addition, by assembling structure of the present invention, also can adjust the first load path 100 by screw 6, precompression between the second load path 101 and the second roll piece 9, (note: gapless between the end face 232 of the portion of end face 44Yu Gai ring-type class 23 of this ring set part 4 that Fig. 3 of the present invention draws gapped between the end face 232 of the portion of end face 44Xu Yugai ring-type class 23 of this ring set part 4 of prerequisite, because precompression adjusted, therefore between and gapless produce, but it is still gapped that the end face 232 of supposing the portion of end face 44Yu Gai ring-type class 23 of this ring set part 4 has been adjusted after precompression, this kind of kenel also can be implemented but poor this kenel of its rigidity is also one of enforcement category of the present invention, therefore gapless kenel is the best kenel of implementing), so, by the locking force of this screw 6 respectively, reach the size of adjusting this gap, if this gap is less, represent this whole the first load path 100, precompression between the second load path 101 and the second roll piece 9 is larger, otherwise precompression is less, therefore outside assembling structure of the present invention not only can keep complete plane of trajectory orbital, also can reach the function of adjusting precompression, to meet various industries for the requirement of precompression size.

Refer to shown in Fig. 4 to Fig. 5, for the present invention's the second preferred embodiment, the present embodiment is different from the first preferred embodiment to be: in the first preferred embodiment, mention and can adjust this first load path 100 by screw 6, precompression between the second load path 101 and the second roll piece 9, and the prerequisite of adjusting this precompression must be between the end face 232 of portion of the end face 44Xu Yugai of this ring set part 4 ring-type class 23 gapped C, the present embodiment arranges two pre-compressing tablets 8 in this clearance C, two these pre-compressing tablet 8 external forms are C font structure, by footpath direction, insert this clearance C, make the end face 232 of the portion of end face 44Yu Gai ring-type class 23 of this ring set part 4 can be able to breasting, with the rigidity between increasing, and when two this pre-compressing tablets 8 is installed, by footpath direction, two these pre-compressing tablets 8 are inserted to this clearance C, and on two these pre-compressing tablets 8, be respectively equipped with the relatively hole 81 of this screw hole 24, and install after this pre-compressing tablet 8, this hole 81 is this screw hole 24 and fixed hole 43 settings relatively, and make screw 6 sequentially through this fixed hole 43, behind hole 81 and this screw hole 24 screw togather locking, complete the assembling operation of this bearing external member, the configuration of all the other elements and effect are all identical with the first preferred embodiment, much more no longer this repeat again.

Refer to shown in Fig. 6 to Fig. 8, for the present invention's the 3rd preferred embodiment, the present embodiment is different from the first preferred embodiment to be: the length of this coating part 3A is long compared with the length of the coating part of the first preferred embodiment 3, the first interior sliding channel 311 of the coating part 3A of relative the present embodiment and the spacing of the second interior sliding channel 312 are larger, can prevent the moment of nut 2 when rotation to produce and increase rigidity, to extend the working life of transmission component, the configuration of all the other elements and effect are all identical with the first preferred embodiment, more much more no longer this repeat.

Above-described embodiment and accompanying drawing non-limiting product form of the present invention and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present invention.

Claims

1. a cap rotating-type Linear transmission element, is characterized in that, comprises:

One bar axle, its structure that is strip, the outer edge surface of this bar axle is provided with spiral helicine rolling groove;

One nut, it has the perforation wearing for this bar axle, and the inner edge surface of this perforation is provided with the sliding channel of this rolling groove relatively, and this rolling groove and sliding channel form a load path, and this load path is provided with a plurality of the first roll pieces; The outer edge surface of this nut is provided with the outer rolling ditch of a ring-type, and a side of this outer rolling ditch is provided with a portion of ring-type class, and this portion of ring-type class has one sheathed and end face;

One coating part, it has a through hole that is sheathed on this nut, the inner edge surface of this through hole is provided with the first interior sliding channel of this outer rolling ditch relatively, and this outer rolling ditch and the first interior sliding channel form one first load path, and the inner edge surface of this through hole is separately provided with one second interior sliding channel;

One ring set part, it has a penetration hole of sheathed that is sheathed on this portion of ring-type class, and this ring set part is provided with the outer rolling groove of this second interior sliding channel relatively, and this second interior sliding channel and outer rolling groove form one second load path;

Wherein, this first load path and the second load path are respectively equipped with a plurality of the second roll pieces;

Wherein, this first interior sliding channel and the second interior sliding channel are quadrant arc, and two these quadrant arcs are mutually back to setting;

Wherein, the axial length of this coating part is greater than the axial length of this ring set part.

2. screw cap rotating-type ball screw rod as claimed in claim 1, it is characterized in that: this ring set part is provided with the fixed hole that a plurality of axle direction run through, the end face of the portion of ring-type class of this nut is provided with a plurality of screw holes, this ring set part is arranged in after this fixed hole by a plurality of screws, respectively this screw and this screw hole screw togather locking, and this ring set part is fixed on this sheathed.

3. screw cap rotating-type ball screw rod as claimed in claim 1, is characterized in that: between the end face of an axial portion of end face Yu Gai ring-type class of this ring set part, be provided with laminar pre-compressing tablet.