CN107269788A - Ball-screw - Google Patents
Ball-screw Download PDFInfo
- Publication number
- CN107269788A CN107269788A CN201710201154.0A CN201710201154A CN107269788A CN 107269788 A CN107269788 A CN 107269788A CN 201710201154 A CN201710201154 A CN 201710201154A CN 107269788 A CN107269788 A CN 107269788A
- Authority
- CN
- China
- Prior art keywords
- ball
- oil
- end cap
- nut
- oily supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
- F16C29/0609—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/068—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track
- F16C29/0683—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque
- F16C29/0685—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with the bearing body fully encircling the guide rail or track the bearing body encircles a rail or rod of circular cross-section, i.e. the linear bearing is not suited to transmit torque with balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2418—Screw seals, wipers, scrapers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0497—Screw mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The ball-screw can apply in the various equipment such as electromechanical integrated product, detection means, lubricant is constantly fed from oil-containing part (5) to oily supply part (6), make ball (9) the contact oily supply part (6) rolled in direction transduction pathway (14), so as to supply lubricant, and then reach the effect for exempting from lubricated maintenance.The nut (2) that the ball-screw is relatively moved by the lead screw shaft (1) with helicla flute (11) and with above-mentioned lead screw shaft.Nut (2), including：Nut main body (3), it is formed with the second helicla flute (12) and return path (13)；End cap (4), it is installed on nut main body (3) and the direction transduction pathway (14) with connection helical track (15) with return path (13)；Oil-containing part (5), it is configured on end cap (4)；And oily supply part (6), it is configured in the intercommunicating pore (20) of end cap (4).
Description
Technical field
The present invention relates to a kind of ball-screw, its electromechanical integrated product such as can load precise positioning work table,
Used in the various equipment of detection means etc., and have what is relatively moved by lead screw shaft and in the lead screw shaft
Nut constituted give fat unit.
Background technology
In the past, as the linear motion device that lubricant is stably supplied by self-lubricating mode, for example, it is disclosed in day
The device of this JP 2013-174255 publications.The linear motion device drives for the ball-screw of end cap gauche form endless form
Dynamic device includes：Helicla flute is formed with nut, inner circumferential surface；The spiral shell with the nut is formed with lead screw shaft, its outer peripheral face
The relative helicla flute of spin slot；And multiple balls, it is loaded into what is formed by the helicla flute of nut and the helicla flute of lead screw shaft
Between spiral helicine orbital plane.It is formed with the inside of nut, surface vertically with returning that oleo-resins one piece injection shapes
Return passage.
In addition, the applicant improves the free degree of design, the management of lubricating oil is have developed simply and to rolling element
The small rolling guidance set of resistance to sliding, and applied for patent (for example, referring to Japanese Unexamined Patent Publication 2006-38195 publications).
The rolling guidance set, including：Cartridge unit, it can make cross bar slidably insertion；Orbital path, its by cartridge part and
Cross bar is combined and formed；Circulating path, it makes to be formed at the orbital path on cartridge unit by the recess of direction transduction pathway
Two ends be connected；And multiple rolling elements, it is rolled in the circulating path and the orbital path.Described roll is oriented to
Component, it is with the relative movement of cross bar and cartridge unit, and rolling element is in circulating path and orbital path interior circulation.The rolling is led
To component, including：The pilot hole that is formed on cartridge unit, the oil-containing part for being assemblied in the pilot hole and along orbital path
Or the rolling element in circulating path contact surface and the oily supply part that sets, and make the oily supply part and oil-containing part phase
Contact.
However, the linear motion device is that oleo-resins material is passed through into injection moulding in the return path of nut
Mode is integrally formed with nut.Because the oleo-resins material is to be mixed resin material and lubricating oil in advance, then
The mixing material is carried out formed by injection moulding, therefore, lubricating oil can not then to be fed when the capacity of lubricating oil tails off, held
Easily cause lubricity bad, furthermore, it is desirable to nut integratedly injection moulding oleo-resins material, therefore there is the cost time
And manufacturing cost is the problem of increase.In addition, the guidance set that rolls is the direction conversion road by the end cap in ball spline
Possess oily supply part in footpath and possess the mode of oil-containing part in outer barrel, it is achieved thereby that exempting from the effect of lubricated maintenance, so
And, oil-containing part is assembled in pilot hole, therefore there is the supply of lubricating oil from oil-containing part to oily supply part not
Fully the problem of.
The content of the invention
It is an object of the invention to solve the problem, and provide one kind that the electromechanics such as precise positioning work table one can be loaded
The ball-screw applied in the various equipment such as body product, detection means, it is constituting the outer of the end cap of internal Returning plate
Side end face forms recess, is configured with the recess and is impregnated with lubricant so as to feed the oil-containing part of lubricant, makes dress
While putting small-sized and simple in itself, oily supply unit is configured embeddedly in the intercommunicating pore of the direction transduction pathway upper shed of end cap
Part, is impregnated with the porous sintered resin formation oil-containing part and oily supply part of lubricant, and oil-containing part is constantly to oil confession
Lubricant is fed to part, makes exposing for the ball contact oily supply part as rolling element rolled in the transduction pathway of direction
Face, so that lubricant reliably and is properly supplied to ball, and then can reach the effect for exempting from lubricated maintenance.
The present invention relates to a kind of ball-screw, it has：Rotatable lead screw shaft, vertically with spiral on its outer peripheral face
Shape is formed with the first helicla flute rolled for multiple balls as rolling element；And the nut of tubular, itself and the silk
The outer peripheral face of thick stick axle is chimeric and is spirally formed with vertically in inner circumferential surface relative with first helicla flute
The second helicla flute rolled for the ball.Consist of：With the rotation of the lead screw shaft, the nut is in the silk
Relatively moved along its length on thick stick axle；
The nut includes：The nut main body of tubular, it is formed with second helicla flute and carried out along the ball
The axially extending return path rolled；End cap, it is respectively arranged at two ends of the nut main body, and is formed with
The direction for connecting the helical track and return path formed by first helicla flute and second helicla flute turns
Change path；Oil-containing part, it is configured at the end face outside of the end cap, and is impregnated with lubricant；And oily supply part, it is matched somebody with somebody
Put being formed on the end cap and connect described in the end cap of the direction transduction pathway and the oil-containing component side
In the intercommunicating pore of end face outside；
On the end face of the oil-containing component side of the oily supply part, it is provided integrally with and is crimped on the oil-containing
Resilient projection on part；
The other end of oily supply part described in the ball contact rolled in the direction transduction pathway, so that
The lubricant is supplied to the ball, and the convex portion of the oily supply part is crimped on oil-containing portion material, so that
The lubricant is replenished to the oily supply part.
Be provided with the lid of the outer surface for covering the oil-containing part on the nut, the lid across the end cap and
The oil-containing part is fixed on the nut main body.Coordinate in addition, having to be formed with the nut main body for installing
The flange part of the erection opening of part.
In addition, the oil-containing part, it is accommodated in the lid in the end face outside for being configured at the end cap,
It is formed as C-shaped ring shape with being arranged on the sealing convex portion alignment direction covered.With the rotation of the lead screw shaft, institute
Ball is stated to roll in the circulating path being made up of the helical track, the return path and the direction transduction pathway
Dynamic, the nut is relatively moved by the ball in the lead screw shaft along the length direction.
In addition, the lead screw shaft is configured to the ballscrew shaft for the circular shaft type that two ends can rotationally be supported.
In addition, the intercommunicating pore being formed on the end cap is opened on the outer side surface for bending to R shapes of the direction transduction pathway
Mouthful, the other end of the oily supply part in the direction transduction pathway is formed as bending to R with described
The shape of R shapes is bent to described in the outer side surface identical of shape.
In addition, the width of the other end being exposed in the direction transduction pathway of the oily supply part is set
It is scheduled in the range of actual 1/4~1/2 of the diameter of the ball.In addition, the end cap connects the spiral to be formed with
Institute of the shape track with the convex portion of the direction transduction pathway of the return path and for blocking the helical track side
The inside Returning plate of the claw of ball is stated, the convex portion of the internal Returning plate, which is embedded in, is formed at each of the nut main body
Recess on individual end, being connected with each end of second helicla flute.
Further the oil-containing part and the oily supply part are by by polyethylene or polyacrylic synthetic resin particulate
Thermoforming and the porous portion with the state for making to keep between the synthetic resin particulate connection is porous formed after pressure is solid
Body is formed, and the lubricant is impregnated with the porous portion.
The ball-screw of the present invention, constitutes form as above, device is configured to simple small size in itself, can with
Substantial amounts of lubricant is impregnated in the oil-containing part for being placed in the recess of the lid in the end face outside for being arranged on end cap, makes to be configured at end cap
Intercommunicating pore in the convex portion of oily supply part be crimped on oil-containing part, thus, lubricant can be reliable because of capillarity etc.
And swimmingly moved from the oil-containing part to the oily supply unit.The lubricant being immersed in oil-containing part is swimmingly replenished to
Oily supply part, the ball and the end contact of the exposure of oily supply part rolled in the transduction pathway of direction, thus, lubricant
Easily oozed out from oily supply part and be supplied to ball, lubricated maintenance is exempted from so as to realize ball-screw.In addition, the ball
Leading screw, its oil-containing part for being configured at the recess of lid is formed as C shape ring-types.In addition, on the inner circumferential side of lid, for laminating leading screw
Axial screw groove and be provided with sealing convex portion, the entrance of foreign matter can be prevented by the sealing convex portion.In addition, oil-containing part
Outside be covered with by covering, therefore, do not have and pollute the situation of surrounding environment because lubricant disperses.
Brief description of the drawings
Fig. 1 is the stereogram of the one embodiment for showing the ball-screw of the present invention.
Fig. 2 is the exploded perspective view of the nut for the ball-screw for showing pie graph 1.
Fig. 3 is the part for a part for Fig. 1 ball-screw being splitted and being shown the circulation road that ball is rolled
Side view.
Fig. 4 is the front view of the end face outside of the end cap for the ball-screw for showing pie graph 3.
Fig. 5 is the sectional view on the A-A positions of the end cap for the ball-screw for showing pie graph 4.
Fig. 6 is the rearview of the inner side end for the end cap for showing Fig. 4.
Fig. 7 A are the side views of the oily supply part for the ball-screw for showing pie graph 1.
Fig. 7 B are the top views of the oily supply part for the ball-screw for showing pie graph 1.
Fig. 8 A are the front views of the oil-containing part for the ball-screw for showing pie graph 1.
Fig. 8 B are the side views of the oil-containing part for the ball-screw for showing pie graph 1.
Fig. 9 A are the front views of the end face outside of the lid for the ball-screw for showing pie graph 1.
Fig. 9 B are the sectional views for showing the B-B positions in Fig. 9 A.
Fig. 9 C are the rearviews of the inner side end of the lid for the ball-screw for showing pie graph 1.
Fig. 9 D are the side views of the lid for the ball-screw for showing pie graph 1.
The explanation of reference
1：Lead screw shaft
2：Nut
3：Nut main body
4：End cap
5：Oil-containing part
6：Oily supply part
7：Lid
8：Flange part (nut main body)
9：Ball (rolling element)
10：Outer peripheral face (lead screw shaft)
11：Helicla flute (the first helicla flute, lead screw shaft)
12：Helicla flute (the second helicla flute, nut main body)
13：Return path (nut main body)
14：Direction transduction pathway (end cap)
15：Helical track
16：Circulating path
17：Inner peripheral surface (nut main body)
18：End (nut main body)
19：End face (end cap)
20：Intercommunicating pore (end cap)
21：End face (oily supply part, direction transduction pathway side)
22：End face (oily supply part, oil-containing component side)
23：Convex portion (projection of oily supply part)
24：Outer surface (oil-containing part)
25：Erection opening (flange part)
26：End (lead screw shaft)
27：Outer side surface (direction transduction pathway)
28：Recess (end of nut main body)
29：Claw (end cap)
30：Convex portion (end cap)
31：Fixing screws (fixing nut main body, end cap, lid)
32：Notch (oil-containing part)
33：Patchhole (nut main body)
34：Patchhole (end cap)
35：Patchhole (oil-containing part)
36：Recess (oil-containing part)
37：Patchhole (lid)
38：End face (lid, outside)
39：Outer peripheral face (lid)
40：Recess (lid)
41：Spot-facing erection opening (lid)
42：End face (end cap, projection)
43：Erection opening (end cap)
44：Opening portion (direction transduction pathway)
45：End face (oil-containing part, inner side)
46：Install with screw hole (nut main body)
47：End face (nut main body)
50：Convex portion (lid)
Embodiment
The ball-screw of the present invention, it is preferably applied to the electromechanical integrated products such as precise positioning work table, detection means
Etc. in various equipment.
Hereinafter, referring to the drawings, one embodiment to the ball-screw of the present invention is illustrated.As shown in Figure 1 to Figure 3,
The ball-screw of the present invention includes：Lead screw shaft 1, it supplies multiple rollings as rolling element to be axially formed on outer peripheral face 10
The rotatable ballscrew shaft for the helicla flute 11 (the first helicla flute) that pearl 9 is rolled；And the nut 2 of tubular, itself and silk
The outer peripheral face 10 of thick stick axle 1 is chimeric and being axially formed in inner circumferential surface 17 relative with helicla flute 11 has ball 9 to be rolled
Dynamic helicla flute 12 (the second helicla flute)；With the rotation of lead screw shaft 1, nut 2 carries out relative along its length in lead screw shaft 1
It is mobile.
Especially, nut 2 is characterised by that it includes：The nut main body 3 of tubular, it is formed with helicla flute 12 and edge
The return path 13 for the length direction extension that ball 9 is rolled；End cap 4, it is respectively arranged at two end faces of nut main body 3
47, and it is formed with helical track 15 and the direction conversion road of return path 13 that connection is formed by helicla flute 11 and helicla flute 12
Footpath 14；Oil-containing part 5, it is configured in the end face outside 19 of end cap 4, and is impregnated with lubricant；And oily supply part 6, its
Configure the end face outside 19 in the end cap 4 of be formed on end cap 4 and communication direction transduction pathway 14 Yu the side of oil-containing part 5
In intercommunicating pore 20.The ball-screw is provided with the lid 7 of the outer surface 24 for covering oil-containing part 5 on nut 2.Lid 7 across
End cap 4 and oil-containing part 5 are fixed on nut main body 3 by fixing screws 31.Many places peace is formed with the end face 47 of nut main body 3
Dress screw hole 46.Fixing screws 31, it is through the spot-facing erection opening 41 of insertion lid 7, the recess 36 of oil-containing part 5 and end
The erection opening 43 of lid 4 simultaneously screws in the installation of nut main body 3 with screw hole 46, so that end cap 4, oil-containing part 5 and lid 7 are solid
Due on nut main body 3.
The ball-screw is formed as follows：Its lead screw shaft 1 inserts nut 2, in order that lead screw shaft 1 is inserted into spiral shell
Mother 2, patchhole is matchingly formed with nut main body 3, end cap 4, oil-containing part 5 and the lid 7 for constituting nut 2 relatively respectively
33rd, patchhole 34, patchhole 35 and patchhole 37.In addition, oil-containing part 5 is accommodated in the end face outside for being configured at end cap 4
In lid 7 on 19, in order to be formed as a part for C-shaped ring shape with the alignment direction of sealing convex portion 50 being arranged on lid 7
Notch 32.Sealing convex portion 50 is arranged to fit with the helicla flute 11 of lead screw shaft 1, and sealing convex portion 50 makes the He of lead screw shaft 1
Gap between nut 2 diminishes, and plays a part of a kind of labyrinth sealing, can prevent foreign matter from entering.Installation cover 7 and oil-containing
During part 5, the sealing of lid 7 can be matched with the notch 32 of convex portion 50 and oil-containing part 5 and be assembled.In oil-containing portion
The recess 36 run through by fixing screws 31 is formed with the outer peripheral face of part 5.Lid 7 is by the central patchhole run through by lead screw shaft 1
37th, the outer peripheral face 39 of the ring-type of the end face 38 of the covering oil-containing part 5 in outside and surrounding is formed, and in the inner side of outer peripheral face 39
It is formed with the recess 40 for accommodating oil-containing part 5.In addition, on lid 7, being provided with many places (for everywhere in Fig. 9) is used to make to fix spiral shell
The spot-facing erection opening 41 that nail 31 runs through.Oil-containing part 5 is contained in the recess 40 of lid 7, is filled with the state that outside is capped
Enter.
Lead screw shaft 1 is configured to the ballscrew shaft for the circular shaft type that two ends 26 can rotationally be supported.In addition, being
The components such as installation workpiece, instrument, equipment, and set in the end 18 of the side of nut main body 3 and be formed with erection opening
25 flange part 8.For end cap 4, wherein, constitute and be formed with a kind of convex portion 30 of internal Returning plate for blocking from lead screw shaft
The claw 29 for the ball 9 that the helicla flute 11 of 1 side is rolled, its make the conversion direction of ball 9 direction transduction pathway 14 and
For the gateway orifice part for guiding ball 9 from direction transduction pathway 14 to return path 13.The convex portion 30 of end cap 4 is embedded in
It is formed in the recess 28 as embedded hole of two ends 18 of nut main body 3, is formed at the direction transduction pathway on end cap 4
14 are connected with the helicla flute 12 being formed on nut main body 3.
In the ball-screw, the circulating path 16 of ball 9 includes：The helicla flute 11 by lead screw shaft 1 of ball 9 and nut master
The helicla flute 12 of body 3 is relative and constitutes helical track 15, the return path 13 being formed on nut main body 3 and shape respectively
Into in the direction transduction pathway 14 on a pair of end caps 4.The ball-screw, in general, ball 9 turn with lead screw shaft 1
It is dynamic, rolled in circulating path 16, nut 2 is relatively moved along its length by ball 9 in lead screw shaft 1.
The ball-screw is by oily supply part 6 from the oil-containing part 5 in the outside for being configured at end cap 4 on direction conversion road
The supply lubricant of ball 9 rolled in footpath 14.The end face outside of the opposite side of end face 42 with being formed with convex portion 30 on end cap 4
Oil-containing part 5 is configured with 19 (Fig. 2).The intercommunicating pore 20 on end cap 4 is formed at, its one end is with the bending of direction transduction pathway 14
Into the form opening of the rectangular opening portion 44 of the outer side surface 27 of R shapes, the other end is opened in the end face outside 19 of end cap 4
Mouthful.Oily supply part 6 is embedded with the intercommunicating pore 20 being formed on end cap 4, the oily supply unit in direction transduction pathway 14
The end face 21 of part 6, it corresponds to the outer side surface 27 of direction transduction pathway 14 and is formed as bending to the shapes of identical R shapes
Shape.Especially, in order to securely feed lubricant, on the end face 22 of the side of oil-containing part 5 of oily supply part 6, one
Ground is provided with the elastically deformable on the inner side end 45 for being crimped on oil-containing part 5, i.e. elastic convex portion 23.The ball-screw
In, because the end face 45 of the convex portion 23 and the side of end cap 4 of oil-containing part 5 of a side of oily supply part 6 is configured in contact, because
This, the installation screw hole 46 of nut main body 3 is screwed in by fixing screws 31, and convex portion 23 is turned into the state of crimping, end cap
4th, oily supply part 6, oil-containing part 5 and lid 7 are fixed on nut main body 3.By the convex portion 23 of oily supply part 6 to press
The state being connected on the end face 45 of oil-containing part 5 is mounted, and the lubricant being immersed in oil-containing part 5 can be swimmingly to oil confession
Moved to part 6, the lubricant being immersed in oil-containing part 5 reliably and swimmingly can be replenished to oily supply unit material 6.Separately
Outside, the end face 21 of the side of oily supply part 6 contacts the ball 9 rolled in direction transduction pathway 14, so that lubricant be supplied
To ball 9；The end face 22 of the opposite side of oily supply part 6 is configured to it and is crimped on oil-containing part 5, so that lubricant quilt
It is replenished in oily supply part 6.In addition, oily supply part 6 is tabular, its end face being exposed in direction transduction pathway 14
The arc surface of the 21 R shapes for being actually formed as rectangle and extending along its length, the width shape of the end face 21 of oily supply part 6
In the range of actual 1/4~1/2 as the diameter for being set in ball 9, thus, oily supply part 6 can be supplied to ball 9
To appropriate lubricant.
Oil-containing part 5 and oily supply part 6 by polyethylene or polyacrylic synthetic resin particulate are pressed it is solid after thermoforming,
And the porous formed body of the porous portion with the state for making to keep between the synthetic resin particulate connection is formed, also,
The lubricant is impregnated with the porous portion.So as in the ball-screw, because oily supply part 6 is changed exposed to direction
In path 14, therefore, the ball 9 rolled in direction transduction pathway 14 contacts the end face 21 of oily supply part 6, is immersed in oil-containing
Lubricant in part 5 and oily supply unit 6 can be supplied to ball 9, so as to reach the effect for exempting from lubricated maintenance.Separately
Outside, on the ball-screw, the parameter of its ball-screw, for example, the diameter of axle that can be formed as lead screw shaft 1 is Φ 15, is formed at
Helicla flute 11 on the outer peripheral face 10 of lead screw shaft 1 can be formed as one, and helical pitch can be formed as 30mm.
Claims (10)
1. a kind of ball-screw, it is characterised in that
It has：Rotatable lead screw shaft, is spirally formed with for multiple as rolling element vertically on its outer peripheral face
The first helicla flute that ball is rolled；And the nut of tubular, it is chimeric with the outer peripheral face of the lead screw shaft and at it
The second spiral shell that the confession ball relative with first helicla flute is rolled spirally is formed with inner peripheral surface vertically
Spin slot；
Consist of：With the rotation of the lead screw shaft, the nut is relatively moved along its length in the lead screw shaft；
The nut includes：The nut main body of tubular, it is formed with second helicla flute and rolled along the ball
The axially extending return path；End cap, it is respectively arranged at two ends of the nut main body, and is formed with connection
The helical track and the direction transduction pathway of the return path formed by first helicla flute and second helicla flute；
Oil-containing part, it is configured at the end face outside of the end cap, and is impregnated with lubricant；And oily supply part, it is configured in shape
Described in Cheng Yu on end cap and the end cap that connects the direction transduction pathway and the oil-containing component side the outboard end
In the intercommunicating pore in face；
On the end face of the oil-containing component side of the oily supply part, it is provided integrally with and is crimped on the oil-containing part
On resilient projection；
The other end of oily supply part described in the ball contact rolled in the direction transduction pathway, so that described
Lubricant is supplied to the ball, and the convex portion of the oily supply part is crimped on oil-containing portion material, so that described
Lubricant is replenished to the oily supply part.
2. ball-screw as claimed in claim 1, it is characterised in that
It is provided with the lid of the outer surface for covering the oil-containing part on the nut, the lid is across the end cap and described
Oil-containing part is fixed on the nut main body.
3. ball-screw as claimed in claim 2, it is characterised in that
The oil-containing part, it is accommodated in the lid in the end face outside for being configured at the end cap, and it is formed as C
Shape ring-type is with being arranged on the sealing convex portion alignment direction covered.
4. ball-screw as claimed in claim 1, it is characterised in that
There is the flange part for being formed with the erection opening for installing component on the nut main body.
5. ball-screw as claimed in claim 1, it is characterised in that
With the rotation of the lead screw shaft, the ball is by the helical track, the return path and the direction
Transduction pathway constitute circulating path in roll, the nut by the ball in the lead screw shaft along the length direction
Relative movement.
6. ball-screw as claimed in claim 1, it is characterised in that
The lead screw shaft is configured to the ballscrew shaft for the circular shaft type that two ends can rotationally be supported.
7. ball-screw as claimed in claim 1, it is characterised in that
The intercommunicating pore being formed on the end cap is opened on the outer side surface for bending to R shapes of the direction transduction pathway
Mouthful, the other end of the oily supply part in the direction transduction pathway is formed as bending to R with described
The shape of R shapes is bent to described in the outer side surface identical of shape.
8. ball-screw as claimed in claim 1, it is characterised in that
The width of the other end being exposed in the direction transduction pathway of the oily supply part is set at described
In the range of actual 1/4~1/2 of the diameter of ball.
9. ball-screw as claimed in claim 1, it is characterised in that
The end cap is to be formed with to connect the helical track and the convex portion of the direction transduction pathway of the return path
And the inside Returning plate of the claw for the ball that blocks the helical track side, the internal Returning plate it is described
Convex portion is embedded in being formed on each end of the nut main body, being connected with each end of second helicla flute recessed
Portion.
10. ball-screw as claimed in claim 1, it is characterised in that
The oil-containing part and the oily supply part are heated into after polyethylene or polyacrylic synthetic resin particulate are pressed admittedly
The porous formed body of shape and porous portion with the state for making to keep between the synthetic resin particulate connection is formed, institute
State and the lubricant is impregnated with porous portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016068765A JP6777415B2 (en) | 2016-03-30 | 2016-03-30 | Ball screw |
| JP2016-068765 | 2016-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107269788A true CN107269788A (en) | 2017-10-20 |
| CN107269788B CN107269788B (en) | 2021-07-13 |
Family
ID=60005300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710201154.0A Active CN107269788B (en) | 2016-03-30 | 2017-03-30 | Ball screw |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6777415B2 (en) |
| KR (1) | KR102324533B1 (en) |
| CN (1) | CN107269788B (en) |
| TW (1) | TWI708017B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848353A (en) * | 2019-12-02 | 2020-02-28 | 珠海创锋精工机械有限公司 | Lead screw slide rail with lubricating oil way |
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| WO2013011815A1 (en) * | 2011-07-20 | 2013-01-24 | 日本精工株式会社 | Main shaft apparatus |
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- 2016-03-30 JP JP2016068765A patent/JP6777415B2/en active Active
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2017
- 2017-02-24 TW TW106106249A patent/TWI708017B/en active
- 2017-03-29 KR KR1020170040106A patent/KR102324533B1/en active IP Right Grant
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| JP2002147561A (en) * | 2000-11-14 | 2002-05-22 | Nippon Thompson Co Ltd | Ball screw device with lubricating device |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI708017B (en) | 2020-10-21 |
| JP2017180664A (en) | 2017-10-05 |
| TW201734332A (en) | 2017-10-01 |
| KR20170113363A (en) | 2017-10-12 |
| KR102324533B1 (en) | 2021-11-09 |
| JP6777415B2 (en) | 2020-10-28 |
| CN107269788B (en) | 2021-07-13 |
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