CN206582300U - Ball-screw apparatus - Google Patents
Ball-screw apparatus Download PDFInfo
- Publication number
- CN206582300U CN206582300U CN201590000393.4U CN201590000393U CN206582300U CN 206582300 U CN206582300 U CN 206582300U CN 201590000393 U CN201590000393 U CN 201590000393U CN 206582300 U CN206582300 U CN 206582300U
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- China
- Prior art keywords
- lubricant
- ball
- lead screw
- screw shaft
- nut
- Prior art date
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Classifications
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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
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Ball-screw apparatus (120) has lead screw shaft (103) and the nut (101) being threadedly engaged via multiple balls (106) with lead screw shaft (103), and the lubricant for also supplying lubricant with the outer peripheral face for being contacted with lead screw shaft (103) contains body (108) and for reducing the heating reducing mechanism that lubricant contains the heating of body (108).Thereby, it is possible to provide：The lubricant contacted with lead screw shaft can be reduced and contain heating caused by the friction of body, the ball-screw apparatus of the supply of long duration for the lubricant that especially can also suppress frictional heat under high speed, the purposes of top load and be stablized.
Description
Technical field
The utility model is related to ball-screw apparatus.
Background technology
Ball-screw apparatus as the device for converting rotational motion into linear motion is well-known.Ball-screw apparatus
To clip the construction that multiple balls are used as rolling element between nut in lead screw shaft (helical axis), so action is lighter, in addition
Delivery precision is also excellent, so being used for weight thing movement conveying device and/or machining object conveying device or precision positioning
Device etc..
Ball-screw apparatus is in the inner peripheral surface for being respectively formed in nut and the outer peripheral face for the lead screw shaft for being inserted into the nut
Spiral helicine ball rolling groove be accommodated with multiple balls, along with rotating against for nut and lead screw shaft, ball is being arranged at
Circulated in the wall thickness of nut or between the ball return path and spiral helicine ball rolling groove of nut outside portion.In order to mitigate
The rolling of ball and the abrasion of reduction ball rolling groove, are present with the component being constructed as below：It is special to the outer peripheral face of lead screw shaft
It is spiral helicine ball rolling groove supply lubricant.
It is used as the unit that lubricant is supplied to the lead screw shaft of ball-screw apparatus, it is known to JP 2000-81103 public affairs
Device described in report, Unexamined Patent 10-265794 publications.It is following construction：By the profit containing the tubular for being soaked with lubricant
Lubrication prescription contains the end that body is installed on nut, and by its inner peripheral portion remain with lead screw shaft sliding contact, in nut and leading screw
Contain body by lubricant from lubricant in the rotating against of axle and be expressed into lead screw shaft outer peripheral face, thus, it is possible to non-maintaining and long-term supply
To lubricant.
In addition, as other examples, having disclosed in Unexamined Patent 08-277900 publications：With being provided with sealing
Lubricant contain the ball-screw apparatus of body.It is following constructions as shown in Figure 10：By spot-facing portion 23 with dimple shapes shape
Cheng Yu has the internal diameter position in the single-ended portion of the nut 1 of ball rolling groove 2 in inner peripheral surface, and ring-type is pressed into the spot-facing portion 23
Lubricant contains body 21, and contacts the inner peripheral portion that the lubricant contains body 21 and the outer peripheral face of lead screw shaft 3, so with ream
The lubricant that the depths of hole portion 23 connects contains the inside diameter of the inner face of body 21, along the one of ball rolling groove 5 of lead screw shaft 3
Ground forms the sealing 22 for being crimped on the ball rolling groove 5.By rotating against for nut 1 and lead screw shaft 3, ball 6 is by spiral shell
The ball rolling groove 2,5 of mother 1 and lead screw shaft 3 is clipped and rolled.By the construction, rolled in the outer peripheral face and ball of lead screw shaft 3
The dynamic application of lubricating of groove 5 contains the lubricant of body 21, and is ensured by sealing 22 dust-proof between lead screw shaft 3 and nut 1.
Prior art literature
Patent document
Patent document 1:JP 2000-81103 publications
Patent document 2:Unexamined Patent 10-265794 publications
Patent document 3:Unexamined Patent 08-277900 publications
Utility model content
The utility model problem to be solved
In the conventional ball-screw apparatus for making the inner peripheral surface that lubricant contains body contact and supply lubricant with lead screw shaft
In, inner peripheral surface that lubricant contains body is integrally directly contacted with lead screw shaft, so relative because of the nut in operating and lead screw shaft
Rotation, the sliding contact surface for containing body and lead screw shaft in lubricant produces frictional heat, especially in high speed, the use condition of top load
Lower frictional heat is changed into high temperature, produces and is used up by the thawing of lubricant, excessively oil caused by discharge, additionally as it is secondary will thus produce
Raw lubricant contains the collapsing of body, and (Japanese is：へ り) etc. raw material deterioration and/or melt danger.
In addition, in the ball-screw apparatus of patent document 3, lubricant contain body 21 inner peripheral surface and with the lubricant
The whole region for the sealing 22 being integrally formed containing body 21 is also slided with the outer peripheral face and ball rolling groove 5 of lead screw shaft 3
Contact, so with the danger for producing larger heating caused by friction, producing same problems mentioned above.
Therefore, the purpose of this utility model is：Offer can be reduced contains body by the lubricant contacted with lead screw shaft
Generated heat caused by friction, the lubricant that especially can also suppress frictional heat in high speed, the purposes of top load and be stablized
The ball-screw apparatus of supply of long duration.
Technical scheme for solving problem
The utility model provides a kind of ball-screw apparatus, and the ball-screw apparatus has lead screw shaft and via multiple balls
And the nut being threadedly engaged with the lead screw shaft, it is characterised in that have：
The lubricant for contacting with the outer peripheral face of the lead screw shaft and supplying lubricant contains body；With
Heating reducing mechanism for reducing the heating that the lubricant contains body.
The effect of utility model
According to the utility model, following ball-screw apparatus are can obtain：It can reduce and body and lead screw shaft are contained by lubricant
Generated heat caused by friction at contact surface, even high speed, the ball-screw apparatus of the purposes of top load can also realize stabilization
Lubricant long-term sustainable supply.
Brief description of the drawings
Fig. 1 is the profilograph of the part of the ball-screw apparatus involved by the 1st embodiment of the present utility model.
Fig. 2 is the profilograph for decomposing and representing the lubricant supply unit of the 1st embodiment.
Fig. 3 is to represent the stereogram that the lubricant of the 1st embodiment contains body.
Fig. 4 is the profilograph of the part of the ball-screw apparatus involved by the 2nd embodiment of the present utility model.
Fig. 5 is the profilograph of the part of the ball-screw apparatus involved by the 3rd embodiment of the present utility model.
Fig. 6 is the profilograph for decomposing and representing the lubricant supply unit of the 3rd embodiment.
Fig. 7 A are to represent the stereogram that the lubricant of the 3rd embodiment contains body, and Fig. 7 B are the profits for representing the 3rd embodiment
Lubrication prescription contains the figure of the outer face of body, and Fig. 7 C are the figures for representing garter spring.
Fig. 8 is the exploded perspective view of lubricant the 2nd variation that contains body of the 3rd embodiment.
Fig. 9 is the exploded perspective view of lubricant the 3rd variation that contains body of the 3rd embodiment.
Figure 10 is the profilograph of the part for the ball-screw apparatus for representing to contain body with conventional lubricant.
Embodiment
Next, specifically being illustrated on embodiment shown in the drawings to the utility model.
(the 1st embodiment)
Knowable to reference picture 1, Fig. 2, the ball-screw apparatus 120 involved by present embodiment, in cylindric nut 101
Inner peripheral surface helical form is formed with ball rolling groove 102, be inserted into the outer peripheral face of the lead screw shaft 103 of nut 101 with nut 101
The corresponding mode of rolling groove 102 be formed with spiral helicine ball rolling groove 105, these ball rolling grooves 102,105 it
Between be clamped with multiple balls 106.The outside portion of nut 101 is provided with ball recurrent canal 107, the two of the ball recurrent canal 107
End is connected with the both ends of the ball rolling groove 102 of nut side.Along with nut 101 and the relative rotary motion of lead screw shaft 103,
Each one side of ball 106 carries out screw in the nut 101 while to be relatively moved with nut 101 relative to lead screw shaft 103
Move, lifted from the groove end of the ball rolling groove 102 of nut 101 to ball recurrent canal in nut 101 towards opposite direction
107 and moved to the relative movement direction of nut 101 in the ball recurrent canal 107, sidewinder the another of pearl rolling groove 102 from nut
One end is re-introduced into the ball rolling groove 102,105 between nut 101, lead screw shaft 103, in the nut 101 to nut 101
Relatively move direction in opposite direction to roll, and the circulation is repeated.
In the end of nut 101, in order that the rolling for obtaining ball 106 is light and reduces the abrasion of ball rolling groove 102,105,
Possesses the lubricant supply unit 115 that lubricant is supplied to lead screw shaft 103.Lubricant supply unit 115 contains including lubricant described later
There are body 108, containment member 111 and store the shell 109 of their tubular.End one in the side of nut 101 of shell 109
Ground is formed with the diameter ring body portion 110 more slightly smaller than the peripheral part of shell 109, and the ring body portion 110 is inserted into nut in recess mode
The spot-facing portion of 101 ends, by the stop screw element for eliminating diagram that is screwed into from the radial outside of nut 101 by shell 109
Nut 101 is fixed in attachment.The shell 109 and ring body portion 110 are preferably formed by the larger material of pyroconductivity, in this implementation
Formed in mode by metal.In addition, shell 109 to the installation of nut 101 be not limited to above-mentioned mode or other
Known mode.
It is embedded with shell 109 in the way of the depths with shell 109 connects for example by elastomer (elastomer) shape
Into ring-type containment member 111, fixed by the stop screw element 112 being screwed into from the radial outside of shell 109.In the state
The inside diameter of lower containment member 111 is crimped on the outer diameter part and ball rolling groove 105 of lead screw shaft 103 and brings dust-proof, sealing
Effect.In addition, containment member 111 can certainly be formed by the elastomer beyond elastomer.
If reference picture 3 further illustrates the lubricant supply unit involved by the utility model together with Fig. 1, Fig. 2
115, then mutually it is grounded in shell 109 with the end face of the opposite side of nut 101 with the outer face of containment member 111 and is accommodated with lubrication
Agent contains body 108.Lubricant contains end face 108a of the outer face of body 108 i.e. with the opposite side of nut 101, by being inserted from radial outside
The engagement latch 116 entered to the peripheral part of shell 109 is limited.
Lubricant contains body 108 can be efficiently with foregoing JP 2000-81103 publications or Unexamined Patent 10-
Lubricant as No. 265794 publications are described contains polymer.It is poly- as containing suitable for lubricant of the present utility model
The example of compound, is following substances：To from polyethylene, polypropylene, polybutene, polymethylpentene etc. basically have mutually assimilate
With the poly- α-alkene of independent or miscella Hybrid in the synthetic resin selected out in the group for learning the polyolefin-based resins of structure
Alkane hydrocarbon system hydrocarbon ils, cycloalkanes hydrocarbon system hydrocarbon ils, mineral oil, dialkyl diphenyl ether oil such ether oil, benzene diformazan as hydrocarbon ils
Raw material obtained by any substance modulation such as ester oil as acid esters, is plasticized, Ran Houleng with more than the melting point of resin being heated
But the material of solid shape is formed as, in addition, according to circumstances can also add antioxidant, antirust in advance in the lubricant
The various additives such as agent, abrasion preventing agent, froth killer, extreme pressure agent.
Lubricant, which contains such as Fig. 3 of body 108, to be expressed, including 2 semicylindrical bodies relative to each other, in the periphery of each semicylindrical body
The substantial middle position in face is formed with the groove 108b of all shapes.By by semicylindrical body each other pairing and in the groove 108b of periphery
In be fitted together to Fig. 2 garter spring 117, can obtain cylindrical shape lubricant contain body 108.The garter spring 117 is except making lubrication
2 semicylindrical bodies that agent contains body 108 are fit each other, also pressurize and bring with containing body 108 to lubricant to radially inner side
The function of oozing out of more effective lubricant.
When such lubricant contained into body 108 be accommodated in shell 109, lubricant contain the inner peripheral surface of body 108 with
The outer peripheral face contact of lead screw shaft 103, along with rotating against for nut 101 and lead screw shaft 103, lubricant contains body from lubricant
108 are oozed out, and lubricant is supplied to lead screw shaft 103.
As shown in Figure 1 and Figure 2, a pair extended in the axial direction are perforated with the trunk wall thickness of nut 101 axially
Path 125,126, is perforated with the radial passage that each axial passageway 125,126 is communicated in from the end outer peripheral face of nut 101 in addition
127、128.With radial passage 127, the leading section insertion nut 101 of each axial passageway 125,126 of 128 opposite sides and be communicated in
It is configured at the connecting tube 129 in the outside of the front end face of nut 101.Radial passage 127,128 is for example soft via appropriate flexible pipe
Property flexible pipe etc. is connected to the coolant pump of outside (not shown).
The coolant such as water, oil of radial passage 127 is imported sequentially through axial passageway 125, company from coolant pump
Adapter 129, axial passageway 126 and returned from radial passage 128 to coolant pump, circulate in the path.By so in spiral shell
The coolant of flowing cools down nut 101 in mother 101, and the cooling effect is transmitted to the lubricant supply unit 115 of the end of nut 101
And lubricant can be contained to body 108 and cooled down.Thereby, it is possible to effectively suppress by the friction hair with the lead screw shaft 103 in work
The temperature that thermally-induced lubricant contains body 108 rises, even at a high speed and/or top load is this generally produces larger friction
In the ball-screw apparatus of the such purposes of heating, rise caused excessively oozing out containing lubricant prevented also from temperature and cause
Oil use up and/or, lubricant contain body 108 raw material deterioration, melt etc., the confession for the lubricant that can be stablized for a long time
Give.
In detail, when being cooled down nut 101 by coolant, cooling effect is from the end of nut 101 to lubricant
Supply unit 115 is transmitted, and lubricant contains body 108 and containment member 111 is cooled.In the present embodiment, lubricant contains
Body 108 and containment member 111 are incorporated in the shell 109 formed by the larger metal of pyroconductivity.Therefore, cooling effect is passed through
Contain body 108 to lubricant from shell 109 and containment member 111 is transmitted, lubricant contains body 108 and containment member 111
Integrally cooled down from respective outer peripheral face.Particularly, in the present embodiment, the ring body portion 110 of shell 109 extends to spiral shell
The vicinity of the radial passage 127,128 of mother 101, so cooling effect can contain body 108 and sealing to lubricant better
Component 111 is transmitted.
In addition, when cooling down nut 101 by coolant, lead screw shaft 103 is also cooled via ball 106, with lead screw shaft
The lubricant of 103 contacts contains body 108 and containment member 111 is also cooled, and ball-screw apparatus 120 is overall cooled.
Lubricant as described above contains body 108 and effectively cooled down from radial outside and radially inner side both sides, so can
Effectively suppress to rise with temperature caused by the frictional heating of the lead screw shaft 103 in work, can play above-mentioned to greatest extent
Effect.
(the 2nd embodiment)
In above-mentioned 1st embodiment, the example of the directly side of nut 101 of cooling ball-screw apparatus 120 is illustrated, but
In addition the utility model can also cool down the side of lead screw shaft 103 in the logical circulation road of the formation coolant of lead screw shaft 103.
Ball-screw apparatus 130 involved by present embodiment shown in Fig. 4 is the cooling construction for representing lead screw shaft 103
Figure.In addition, on ball-screw apparatus 130, for the composition imparting same reference numerals same with above-mentioned 1st embodiment
Explanation is omitted.
The shaft core path 131 of the shaft core of insertion lead screw shaft 103 in the axial direction is formed, is passed through at the two ends of lead screw shaft 103
Coolant pump is connected to by joint (not shown) and flexible pipe, by coolant in shaft core path 131 with being followed in coolant pump
Ring and lead screw shaft 103 is cooled down, the cooling effect contains body 108 to the lubricant of lubricant supply unit 115 and transmits and moisten this
Lubrication prescription contains body 108 and cooled down.Thereby, it is possible to obtain the effect same with above-mentioned 1st embodiment.
In detail, when cooling down lead screw shaft 103 by coolant, the lubricant contacted with lead screw shaft 103 contains body 108
And containment member 111 is cooled.
In addition, when cooling down lead screw shaft 103 by coolant, nut 101 is also cooled via ball 106.Thus, cool down
Effect is transmitted from the end of nut 101 to lubricant supply unit 115, and lubricant contains body 108 and containment member 111 is cold
But, ball-screw apparatus 130 is overall cooled.Same with above-mentioned 1st embodiment, lubricant contains body 108 and sealing structure
Part 111 is incorporated in the shell 109 formed by the larger metal of pyroconductivity.Therefore, cooling effect via shell 109 to lubrication
Agent contains body 108 and containment member 111 is transmitted, and lubricant contains body 108 and containment member 111 is whole from respective outer peripheral face
Body is cooled.Particularly, in the present embodiment, the ring body portion 110 of shell 109 is inserted into the end of nut 101 in recess mode,
So can ensure larger relative to the contact area of nut 101 by shell 109.Therefore, cooling effect is by better to profit
Lubrication prescription contains body 108 and containment member 111 is transmitted.
Lubricant as described above contains body 108 and effectively cooled down with radial outside both sides from radially inner side, thus with it is upper
State the 1st embodiment same, can effectively suppress as caused by with the frictional heating of the lead screw shaft 103 in work in temperature
Rise, above-mentioned effect can be played to greatest extent.
In addition, in the ball-screw apparatus 130 involved by present embodiment, above-mentioned cooling construction can also be replaced,
And it is following compositions：It is to configure cooling fan above Fig. 4 on such as extended line of the axis direction of lead screw shaft 103, by this
Cooling fan cooling ball-screw apparatus 130 is overall.In this case, can directly it be cooled down by the air-supply from cooling fan
Lubricant contains body 108.In addition, directly cool down shell 109 by the air-supply from cooling fan, so can be from respective outer
Side face entirety cooling lubricant contains body 108 and containment member 111.
More than, as the type of cooling of the present utility model, to cooling down the mode of nut 101, cooling down the side of lead screw shaft 103
Formula, cooling fan cool down ball-screw apparatus it is overall by way of described, but can certainly will cool down nut
101 mode is with cooling down the mode, the combination cooling fan in the mode of cooling nut 101 that the mode of lead screw shaft 103 is combined
Mode, cooling lead screw shaft 103 mode in combine cooling fan mode.
In addition, being illustrated in Fig. 1, Fig. 4 ball-screw apparatus 120,130 sharp as the endless form of ball 106
With the situation of ball recurrent canal 107, but the ball-recirculation mode that the utility model can equally be applied to beyond it for example be held partially
Turn device formula, determining journey block, (Japanese is：こま；Reverser) ball-screw apparatus such as formula, end cover type.
In addition, the shape and/or lubricant of shell 109 contain the shape of body 108, to configuration, number of lead screw shaft 103 etc.
Be not limited to it is above-mentioned, as long as being contacted i.e. by that can contain cooling effect in the way of body 108 is transmitted to lubricant from shell 109
Can.Shell 109 and ring body portion 110 are not limited to metal, can also be made up of the larger other materials of pyroconductivity.
(the 3rd embodiment)
Knowable to reference picture 5, Fig. 6, the ball-screw apparatus 220 involved by present embodiment, in cylindric nut 201
Inner peripheral surface helical form is formed with ball rolling groove 202, be inserted into the outer peripheral face of the lead screw shaft 203 of nut 201 with nut
The corresponding mode of 201 rolling groove 202 is formed with spiral helicine ball rolling groove 205, in these ball rolling grooves 202,205
Between be clamped with multiple balls 206.The outside portion of nut 201 is provided with ball recurrent canal 207, the ball recurrent canal 207
Two ends are connected with the both ends of the ball rolling groove 202 of nut side.Fortune is rotated against along with nut 201 and lead screw shaft 203
Dynamic, each one side of ball 206 carries out screw while to be relatively moved with nut 201 relative to lead screw shaft 203 in nut 201
The opposite direction of direction moved in nut 201, returned by the groove end lifting of the ball rolling groove 202 from nut 201 to ball
Return pipe 207 and moved to the relative movement direction of nut 201 in the ball recurrent canal 207, sidewinder pearl rolling groove 202 from nut
The other end be again introduced into ball rolling groove 202,205 between nut 201, lead screw shaft 203, in nut 201 to nut 201
Relative movement direction in opposite direction roll, and the circulation is repeated.
In the end of nut 201, in order that the rolling for obtaining ball 206 is light and drops the abrasion of ball rolling groove 202,205
It is low, possess the lubricant supply unit 215 that lubricant is supplied to lead screw shaft 203.Lubricant supply unit 215 includes lubricant described later
Containing body 208, containment member 211 and store the shell 209 of their tubular.End one in the side of nut 201 of shell 209
It is formed with the diameter ring body portion 210 more slightly smaller than the peripheral part of shell 209, the ring body portion 210 is inserted into recess mode body
The spot-facing portion of the end of nut 201, by the stop screw element for eliminating diagram that is screwed into from the radial outside of nut 201 by shell
Nut 201 is fixed in 209 attachments.In addition, shell 209 to the installation of nut 201 be not limited to above-mentioned mode or
Other known modes.
In shell 209 ring-type for example formed by elastomer is embedded with the way of the depths with shell 209 connects
Containment member 211, is fixed by the stop screw element 212 being screwed into from the radial outside of shell 209.Containment member in this condition
211 inside diameter is crimped on the outer diameter part and ball rolling groove 205 of lead screw shaft 203 and brings dust-proof, sealing function.In addition,
Containment member 211 can certainly be formed by the elastomer beyond elastomer.
If the reference picture 7 together with Fig. 5, Fig. 6 and further illustrate the lubricant supply unit involved by the utility model
215, then it is connected on the outer face of containment member 211 and lubrication is accommodated with shell 209 with the end face of the opposite side of nut 201
Agent contains body 208.End face 208a of the outer face that lubricant contains body 208 i.e. with the opposite side of nut 201 from radial outside by inserting
The engagement latch 216 entered to the peripheral part of shell 209 is limited.
Lubricant, which contains body 208, effectively to be lubricated using such described in foregoing patent document 1 or patent document 2
Agent contains polymer.It is following substances as the example for containing polymer suitable for lubricant of the present utility model：To from poly-
Ethene, polypropylene, polybutene, polymethylpentene etc. have in the group of the polyolefin-based resins of identical chemical constitution basically to be selected
With alkane hydrocarbon system hydrocarbon ils, cycloalkane as independent or miscella Hybrid poly ＆ Alpha ,-olefin oil in the synthetic resin gone out
It is any substance modulation institute such as ester oil as hydrocarbon ils, mineral oil, dialkyl diphenyl ether oil such ether oil, phthalic acid ester
The raw material obtained, is plasticized with more than the melting point of resin being heated, then cools down and be formed as the material of solid shape, in addition,
It according to circumstances can also add antioxidant, antirust agent, abrasion preventing agent, froth killer, extreme pressure in advance in the lubricant
The various additives such as agent.
Lubricant, which contains such as Fig. 7 A and Fig. 7 B of body 208, to be expressed, including 2 semicylindrical bodies relative to each other, half and half
The substantial middle position of the outer peripheral face of cylinder is formed with the groove 208b of all shapes.By by semicylindrical body each other pairing and make figure
6th, Fig. 7 C garter spring 17 is embedded in the groove 208b of periphery, and the lubricant that can obtain cylindrical shape contains body 208.The clamping bullet
Spring 217 is except making 2 semicylindrical bodies that lubricant contains body 208 fit each other, also with containing to radially inner side to lubricant
Body 208 pressurizes and brought the function of oozing out of more effective lubricant.
When such lubricant contained into body 208 be accommodated in shell 209, lubricant contain the inner peripheral surface of body 208 with
The outer peripheral face contact of lead screw shaft 203, along with rotating against for nut 201 and lead screw shaft 203, lubricant contains body from lubricant
208 are oozed out, and lubricant is supplied to lead screw shaft 203.
Herein, lubricant contains body 208 and is formed with jog in inner circumferential surface 208c.Jog in the present embodiment
As shown in Figure 7 A, the i.e. latticed annular knurl processing of inclined wire line is implemented by the inner peripheral surface 208c for containing body 208 to lubricant and formed
Knurled finish 218 constitute.The convex portion of knurled finish 218 is contacted with the outer peripheral face of lead screw shaft 203, knurled finish 218
Recess do not contacted with lead screw shaft 203, so the lubricant that can contact the outer peripheral face with lead screw shaft 203 contains body 208
The situation of inner peripheral surface 208c formation jog of the contact area than not containing body 208 in lubricant is small.Thus, lubricant contains body
Frictional force between 208 and lead screw shaft 203 declines, heating reduction caused by CONTACT WITH FRICTION.Therefore, even at a high speed and/or high
Load is this generally produce larger frictional heating as purposes ball-screw apparatus in, prevented also from temperature rise cause
Excessively oozing out containing lubricant caused by the deterioration of oil is used up and/or lubricant contains body 208 raw material, melt etc., energy
The supply of enough long-term lubricants stablized.In addition, knurled finish 218 is not limited to inclined wire line, or plain net
Line is striated etc..
(the 1st variation)
The jog for being formed at the inner peripheral surface 208c that lubricant contains body 208 is not limited to annular knurl processing as described above
Face, as long as lossless lubricant contain body 208 to the leaching of the lubricant of lead screw shaft 203, ooze out in the range of make and leading screw
The substantive contact area of axle 203 reduces and suppressed the part of frictional heating.For example, containing body 208 as lubricant
1st variation, can also be made up of inner peripheral surface 208c jog pit (dimple) machined surface for eliminating diagram.In the example
In son, the inner peripheral surface 208c for containing body 208 in lubricant, which is formed with multiple pit shape recesses and for example formed, multiple is formed at Gao Er
Less hemispherical recess as the surface of husband's ball (diagram is omitted).Lubricant contains body 208 by for 2 semicircular cylinders
Body, easily forms such pit machined surface.
(the 2nd variation)
Fig. 8 is the exploded perspective view for the 2nd variation that lubricant contains body 208, contains body in lubricant in this case
208 inner peripheral surface 208c is formed with least 1 groove 208d extended in a circumferential direction, 2 is formed with this variation
Groove 208d, is used as jog.Groove 208d is not contacted directly with lead screw shaft 203, and thus the outer peripheral face with lead screw shaft 203 connects
The contact area that tactile lubricant contains body 208 is reduced, and can suppress the generation of larger frictional heat.
(the 3rd variation)
Fig. 9 is the exploded perspective view for the 3rd variation that lubricant contains body 208.In this case, body is contained in lubricant
208 inner peripheral surface 208c is formed with prominent bar (ridge) 208e of at least 1 extended in a circumferential direction, the shape in this variation
Into there is 1 prominent bar 208e, it is used as jog.The protrusion bar 208e is contacted with the outer peripheral face of lead screw shaft 203, in prominent bar
The outer peripheral face sliding contact of part not with lead screw shaft 203 beyond 208e, it is thus same with the 2nd variation to seek contact area
The reduction of frictional heat realized of reduction, the suppression that rises of temperature.Prominent bar 208e can certainly be provided with a plurality of, in addition to
Oozing out for effective lubricant is brought, prominent bar 208e inner peripheral surface is formed as being in smooth wide cut.
Cylindric lubricant, which contains body 208, in the case of the 1st~the 3rd above-mentioned variation also includes 2 semicircular cylinders
Body, the endless groove 208b of the garter spring 217 for installing ring-type is formed with its periphery.Lubricant contains body 208 by this
Spring 217 carries out the tie-down to radially inner side, carries out oozing out for more effective lubricant.Such 2 semicylindrical bodies make to profit
Lubrication prescription contains the concavo-convex handling ease of the inner peripheral surface of body 208, but is according to circumstances particularly in that case of the 2nd, the 3rd variation
Also can for be not 2 semicylindrical bodies mode.In addition, the jog for containing body 208 as lubricant is illustrated to inner peripheral surface
208c implements annular knurl processing, pit processing, groove formation, the example of prominent bar formation but it is also possible to be the side for combining them
Formula.In addition, lubricant contain the raw material of body 208, shape, to configuration, the arrangement of jog, number of lead screw shaft 203 etc. only
The purpose can be reached, be not particularly limited.The jog for the inner peripheral surface 208c that lubricant contains body 208 is used to reduce the lubrication
Agent contains the contact with lead screw shaft 203 of body 208 pressure, suppresses the rising of its frictional heat, in addition to above-mentioned composition, or
The a plurality of groove or prominent bar extended in the axial direction.Alternatively, it is also possible to by being equably provided with many on inner peripheral surface 208c
Embossing (emboss) machined surface of individual projection constitutes the jog for the inner peripheral surface 208c that lubricant contains body 208.
Returned in addition, being illustrated in Fig. 5 ball-screw apparatus 220 as the endless form of ball 206 using ball
The situation of pipe 207, but the utility model equally can be applied to its beyond ball-recirculation mode for example hold deflector formula, determine journey
The ball-screw apparatus such as block formula, end cover type.
Claims (16)
1. a kind of ball-screw apparatus, the ball-screw apparatus has：Lead screw shaft and via multiple balls with the lead screw shaft
The nut being threadedly engaged, it is characterised in that
Have：
The lubricant for contacting with the outer peripheral face of the lead screw shaft and supplying lubricant contains body；With
Heating reducing mechanism for reducing the heating that the lubricant contains body,
The cooling channel of at least one party for making coolant circulate in the nut and the lead screw shaft is formed with, is used as institute
State heating reducing mechanism.
2. ball-screw apparatus as claimed in claim 1, it is characterised in that：
Have in the end of the axis direction of the nut and store the shell that the lubricant contains body,
The lubricant contains body to surround the drum of the lead screw shaft, and the outer peripheral face that the lubricant contains body is embedded in
The shell,
The lead screw shaft is inserted through the lubricant in the way of it can slide and contains body.
3. ball-screw apparatus as claimed in claim 2, it is characterised in that：
The shell is metal system.
4. ball-screw apparatus as claimed in claim 3, it is characterised in that：
Spot-facing portion is formed with the end face of the axis direction of the nut,
The shell includes：The maintaining part for keeping the lubricant to contain body；Be integrally provided to the maintaining part, it is chimeric
Fitting portion in the spot-facing portion of the nut.
5. ball-screw apparatus as claimed in claim 4, it is characterised in that：
The cooling channel includes：The nut side path of the nut is formed at along the axis direction of the nut,
The fitting portion of the shell is extended near the nut side path of the nut.
6. ball-screw apparatus as claimed in claim 5, it is characterised in that：
The cooling channel includes：The nut side path of the nut and it is formed at along the axis direction of the lead screw shaft
The lead screw shaft side path of the lead screw shaft.
7. ball-screw apparatus as claimed in claim 4, it is characterised in that：
The cooling channel includes：The lead screw shaft side path of the lead screw shaft is formed at along the axis direction of the lead screw shaft.
8. the ball-screw apparatus as described in any one in claim 2 to 7, it is characterised in that：
The containment member of sealed ring-type is carried out in the way of containing body phase neighbour with the lubricant to the periphery of the lead screw shaft
It is accommodated in the shell.
9. ball-screw apparatus as claimed in claim 1, it is characterised in that：
The contact portion that the lubricant contacted in the outer peripheral face with the lead screw shaft contains body, is formed with reduction described
The jog of the area of contact portion, is used as the heating reducing mechanism.
10. ball-screw apparatus as claimed in claim 9, it is characterised in that：
The lubricant contains the cylindrical shape of body,
The lead screw shaft is inserted through the lubricant in the way of it can slide and contains body,
The inner peripheral surface for containing body in the lubricant is formed with the jog.
11. ball-screw apparatus as claimed in claim 10, it is characterised in that：
The jog that the lubricant contains body is to implement part formed by annular knurl processing to the inner peripheral surface.
12. ball-screw apparatus as claimed in claim 10, it is characterised in that：
The jog that the lubricant contains body is to implement part formed by pit processing to the inner peripheral surface.
13. ball-screw apparatus as claimed in claim 10, it is characterised in that：
The jog that the lubricant contains body forms the groove portion of oriented circumferencial direction extension in the inner peripheral surface.
14. ball-screw apparatus as claimed in claim 10, it is characterised in that：
The jog that the lubricant contains body forms the protuberance of oriented circumferencial direction extension in the inner peripheral surface.
15. ball-screw apparatus as claimed in claim 10, it is characterised in that：
The lubricant, which contains body, includes 2 semicylindrical bodies, and the card of ring-type is installed by containing the periphery of body in the lubricant
Tight spring and be cylindric by 2 semicylindrical bodies zoarium.
16. the ball-screw apparatus as described in any one in claim 10 to 15, it is characterised in that：
It is provided with the way of containing body phase neighbour with the lubricant and the close of sealed ring-type is carried out to the periphery of the lead screw shaft
Seal component.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-076220 | 2014-04-02 | ||
| JP2014-076221 | 2014-04-02 | ||
| JP2014076220A JP2015197183A (en) | 2014-04-02 | 2014-04-02 | ball screw device |
| JP2014076221A JP2015197184A (en) | 2014-04-02 | 2014-04-02 | ball screw device |
| PCT/JP2015/057905 WO2015151804A1 (en) | 2014-04-02 | 2015-03-17 | Ball screw device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206582300U true CN206582300U (en) | 2017-10-24 |
Family
ID=54240136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201590000393.4U Expired - Fee Related CN206582300U (en) | 2014-04-02 | 2015-03-17 | Ball-screw apparatus |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN206582300U (en) |
| DE (1) | DE212015000082U1 (en) |
| TW (1) | TWI580874B (en) |
| WO (1) | WO2015151804A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505936A (en) * | 2018-11-14 | 2019-03-22 | 西北工业大学 | It is a kind of can adaptive temperature control planetary spindle drive |
| CN109899473A (en) * | 2019-03-14 | 2019-06-18 | 赵洁 | Ball screw assembly, and sealing structure |
| CN114110112A (en) * | 2021-11-15 | 2022-03-01 | 浙江健壮传动科技有限公司 | Combined screw rod nut |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6777416B2 (en) * | 2016-03-30 | 2020-10-28 | 日本トムソン株式会社 | Ball screw |
| CN109707814A (en) * | 2019-01-25 | 2019-05-03 | 深圳市锐健电子有限公司 | A kind of novel ball screw device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0664663B2 (en) | 1988-09-14 | 1994-08-22 | セコム株式会社 | Abnormal signal hold system |
| JP3438399B2 (en) * | 1995-04-06 | 2003-08-18 | 日本精工株式会社 | Ball screw |
| JP3796636B2 (en) | 1997-03-24 | 2006-07-12 | 日本精工株式会社 | Lubricant supply member, bearing having the lubricant supply member, linear guide, ball screw, oil seal |
| JP3796972B2 (en) | 1997-07-24 | 2006-07-12 | 日本精工株式会社 | Lubricator for ball screw |
| JP4396375B2 (en) * | 2004-04-21 | 2010-01-13 | 日本精工株式会社 | Ball screw device |
| DE602005010806D1 (en) * | 2004-10-15 | 2008-12-18 | Doosan Infracore Co Ltd | Device for cooling a ball screw |
| JP2014001818A (en) * | 2012-06-20 | 2014-01-09 | Nsk Ltd | Ball screw and linear guide device |
| US8931358B2 (en) * | 2012-07-13 | 2015-01-13 | Hiwin Technologies Corp. | Ball screw with a dust-proof and lubricating device |
-
2015
- 2015-03-17 WO PCT/JP2015/057905 patent/WO2015151804A1/en active Application Filing
- 2015-03-17 DE DE212015000082.6U patent/DE212015000082U1/en not_active Expired - Lifetime
- 2015-03-17 CN CN201590000393.4U patent/CN206582300U/en not_active Expired - Fee Related
- 2015-03-27 TW TW104109955A patent/TWI580874B/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505936A (en) * | 2018-11-14 | 2019-03-22 | 西北工业大学 | It is a kind of can adaptive temperature control planetary spindle drive |
| CN109899473A (en) * | 2019-03-14 | 2019-06-18 | 赵洁 | Ball screw assembly, and sealing structure |
| CN109899473B (en) * | 2019-03-14 | 2022-06-03 | 赵洁 | Ball screw pair and sealing structure |
| CN114110112A (en) * | 2021-11-15 | 2022-03-01 | 浙江健壮传动科技有限公司 | Combined screw rod nut |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015151804A1 (en) | 2015-10-08 |
| TWI580874B (en) | 2017-05-01 |
| TW201600770A (en) | 2016-01-01 |
| DE212015000082U1 (en) | 2016-11-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20210317 |