WO2004020872A1 - ボールねじ - Google Patents
ボールねじ Download PDFInfo
- Publication number
- WO2004020872A1 WO2004020872A1 PCT/JP2003/010736 JP0310736W WO2004020872A1 WO 2004020872 A1 WO2004020872 A1 WO 2004020872A1 JP 0310736 W JP0310736 W JP 0310736W WO 2004020872 A1 WO2004020872 A1 WO 2004020872A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pole
- lubricating oil
- rolling groove
- screw
- oil
- Prior art date
Links
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
- 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
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/18576—Reciprocating or oscillating to or from alternating rotary including screw and nut
Definitions
- the present invention relates to a pole screw having a screw shaft and a nut portion, and having a structure in which seal portions are provided at both ends of the nut portion.
- Fig. 1 is a diagram showing the configuration of this type of pole screw.
- Fig. 1a is an exploded perspective view showing the overall configuration
- Fig. 1b is a front view showing the configuration of the wiper ring
- Fig. FIG. 3 is a diagram showing details of an A portion.
- the pole screw 10 corresponds to a screw shaft 11 with a spiral pole rolling groove 11 1a on which the ball (rolling element) rolls on the outer peripheral surface, and a pole rolling groove 11 1a on the inner peripheral surface.
- a nut portion 12 is mounted on the screw shaft 11 having a pole circulating path (not shown) including a pole rolling groove (not shown) formed therein so as to be relatively movable, and is arranged in the pole circulating path.
- a lubricating oil supply device 20 that supplies lubricating oil to the pole rolling grooves 11 a of the screw shaft 11 is attached to both front and rear ends of the nut portion 12.
- the pole 13 passes between the pole rolling groove 11 a of the screw shaft 11 and the pole rolling groove of the nut 12 and the pole circulation path of the nut 12. Rolling 'circulates.
- the pole 13 also rolls and circulates.
- the lubricating oil supply devices 20 and 20 are relative to the screw shaft 11 like the nut portion 12 And apply lubricating oil to the pole rolling groove 11 a of the screw shaft 11.
- the lubricating and lubricating oil supply device 20 has a configuration in which a lubricating oil supply mechanism, which will be described later, is disposed on the side of the nut portion 12, and the outer rings (seal portions) 21, 21 are disposed outside the lubricating oil supply mechanism. .
- the wiper ring 21 has a slit 22 to prevent foreign matter such as dust from entering the wiper ring 21 as shown in Fig.1b.
- the foreign matter M in the pole rolling groove 11a of the screw shaft 11 is discharged to the outside as shown in FIG. 1c.
- the arrow B indicates the rotation direction of the screw shaft 11.
- a method of separately mounting a wiper ring with the slit 22 facing in the reverse direction that is, an oil supply mechanism outside the nut portion 12, a reverse wiper ring, and a wiper ring
- the lubricating oil supply device may be configured in such a manner that the wiper ring 21 has a bias cut portion, from which oil leaks. Also, since the wiper ring 21 has a function of extruding foreign matter M in the pole rolling groove 11a in the outer peripheral direction, if oil is returned into the pole rolling groove 11a, no action is taken. Does not work.
- the present invention has been made in view of the above points, and an object of the present invention is to provide a pole screw having a lubricating oil supply device configured to prevent the lubricating oil in a pole rolling groove from leaking to the outside. . Disclosure of the invention
- the present invention provides a screw shaft having a pole rolling groove on the outer periphery, a plurality of poles capable of rolling along the pole rolling groove, and a screw shaft via the plurality of poles.
- a lubricating oil supply mechanism comprising: a combined nut portion; a lubricating oil supply mechanism provided at a shaft end of the nut portion; and a pole screw including a seal portion provided outside the lubricating oil supply mechanism.
- the supply mechanism has an application body whose tip is in sliding contact with the pole rolling groove, and is configured to supply lubricating oil to the pole rolling groove via the application body. It is characterized in that an oil lip portion whose leading end is in sliding contact with the pawl rolling groove surface is provided at a predetermined interval between the pawl rolling groove and the application body.
- the oil lip portion in which the tip end portion is in sliding contact with the roller rolling groove surface at a predetermined interval between the roller and the coating member in the vicinity of the coating member As described above, by providing the oil lip portion in which the tip end portion is in sliding contact with the roller rolling groove surface at a predetermined interval between the roller and the coating member in the vicinity of the coating member, The lubricating oil supplied to the lubricating oil is removed by the oil lip portion and collected in the space between the application body and the oil lip portion. Therefore, the lubricating oil tries to return to the inside of the lubricating oil supply mechanism through the application body. Therefore, the tip of the application body is always immersed in the lubricating oil, the necessary amount of lubricating oil is always secured in the pole rolling groove, and the lubricating oil is not discharged to the outside. Consumption is also reduced.
- the oil lip portion is attached to the mounting portion of the application body of the lubricating oil supply mechanism via the panel panel so that the tip portion always comes into sliding contact with the pole rolling groove surface by its elastic force. It is characterized by the following.
- the oil lip portion is attached to the mounting portion of the application body of the lubricating oil supply mechanism via the leaf spring so that the distal end portion is always in sliding contact with the pole rolling groove surface due to its elastic force.
- the above-mentioned effect is further improved because the tip of the part always slides on the pole rolling groove surface, removes excess lubricating oil in the pole rolling groove and accumulates in the space between the application body and the oil lip. I do.
- the sliding contact portion slidingly contacting the pole rolling groove surface is made of a wear-resistant resin material, and the sliding contact portion is provided integrally with a tip portion of the oil lip body made of an elastic material.
- the oil lip is attached to the mounting portion of the application body of the lubricating oil supply mechanism via a support member such that the tip of the sliding portion always slides on the pole rolling groove surface.
- the oil lip portion is configured such that the sliding contact portion made of a wear-resistant resin material is integrally provided at the tip of the oil lip body made of a non-volatile material, so that the entire sliding contact surface of the sliding contact portion is made of oil. Due to the natural force of the lip body, it always comes into close contact with the pole rolling groove surface, and the lubricating oil in the pole rolling groove is wiped out and collected in the space between the application body and the oil lip. The above operation is further improved.
- the present invention provides a screw shaft having a pole rolling groove on the outer periphery, a plurality of poles capable of rolling along the pole rolling groove, and a nut screwed to the screw shaft via the plurality of poles.
- a nut portion a lubricating oil supply mechanism for supplying lubricating oil to a pole rolling groove located in the nut portion, and a pole screw having seal portions provided at both ends of the nut portion.
- An oil lip portion is provided which is always in sliding contact with the pole rolling groove surface.
- the seal portion is provided with the oil lip portion whose leading end is always in sliding contact with the pole rolling groove surface, so that the lubricating oil supplied to the pole rolling groove surface is removed by the oil lip portion, and the outside of the nut portion is removed.
- the lubricating oil is prevented from leaking out, so the necessary and sufficient amount of lubricating oil is always secured in the pole rolling groove located in the nut part, and the lubricating oil is not discharged to the outside. Consumption is also reduced.
- the oil lip portion may be configured such that the contact portion slidingly contacting the pole rolling groove surface is made of a wear-resistant resin material, and the sliding contact portion is integrally formed with the tip of the oil lip body made of an elastic material.
- the oil lip portion is configured such that the sliding contact portion made of a wear-resistant resin is integrally provided at the tip of the oil lip body made of an elastic material, so that the entire sliding contact surface of the sliding contact portion is made of the oil lip. Due to the elastic force of the main body, the sliding contact is always brought into close contact with the pole rolling groove surface, and the lubricating oil removing action in the pole rolling groove is improved. Further improve.
- Fig. 1 is a diagram showing the configuration of the pole screw
- Fig. 1a is an exploded perspective view showing the overall configuration
- Fig. 1b is a front view showing the configuration of the wiper ring
- Fig. 1c is the detail of part A in Fig. 1b.
- FIG. 1a is a diagram showing the configuration of the pole screw
- Fig. 1a is an exploded perspective view showing the overall configuration
- Fig. 1b is a front view showing the configuration of the wiper ring
- Fig. 1c is the detail of part A in Fig. 1b.
- FIG. 2 is a diagram showing an arrangement of an application body and an oil lip portion of a lubricating oil supply mechanism in a ball screw according to the present invention.
- FIG. 3 is a perspective view showing the configuration of the oil lip portion.
- FIG. 4 is a diagram for explaining the operation of the application body and the oil lip portion.
- FIG. 5 is an exploded perspective view showing a configuration example of a lubricating oil supply device for a pole screw according to the present invention.
- FIG. 6 is a new view of the pole screw lubricating oil supply device according to the present invention in a direction orthogonal to the axis.
- FIG. 7 is a view showing an end portion of a nut portion of another configuration example of the pole screw according to the present invention.
- FIG. 8 is a diagram showing the configuration of the seal portion of the pole screw according to the present invention, FIG. 8A is a side view, FIG. 8B is a plan view, and FIG. 8C is a side view of an oil lip portion.
- FIG. 9 is a side view showing the configuration of the sealing portion of the pole screw according to the present invention.
- FIG. 2 is a diagram showing an arrangement relationship between an application body and an oil lip portion of a lubricating oil supply mechanism in a ball screw according to the present invention.
- the lubricating oil supply mechanism 30 includes a plate-shaped application body 31 in which a tongue piece described later slides in contact with a pole rolling groove 11 a provided on the outer periphery of the screw shaft 11.
- the application body 31 is disposed substantially parallel to the axial direction of the screw shaft 11. In the vicinity of the application body 31, a predetermined interval is provided in the direction opposite to the rotation direction of the screw shaft 11
- a lip 32 is arranged.
- the oil lip portion 32 is attached to the application body 31 at a predetermined lead angle ⁇ .
- the application body 31 is made of a fiber entangled body such as felt suitable for supplying the lubricating oil in the lubricating oil supply mechanism 30 at a predetermined lubricating amount
- the oil lip portion 32 is a pole roller. It is made of a resin material such as, for example, elastomer, which is a material having good sliding properties with the surface of the running groove 11a.
- the oil lip portion 32 is attached to a bent support portion 33 b extending from the base portion 33 a of the panel panel 33, and the tip portion 3 is formed by the elastic force of the support portion 33 b. It is installed so that 2a always slides on the pole rolling groove 11a.
- FIG. 4 is a diagram for explaining the operation of the application body 31 and the oil lip portion 32.
- the screw shaft 11 rotates in the direction shown by arrow C
- the lubricant is applied from the application body 31 to the surface of the pole rolling groove 11a, and at the same time, the surface of the pole rolling groove 11a.
- the remaining lubricating oil Q 2 is removed by the oil lip portion 32 and accumulates in the space D between the application body 31 and the oil lip portion 32.
- FIG. 5 and 6 are views showing a configuration example of a lubricating oil supply device for a pole screw according to the present invention.
- FIG. 5 is an exploded perspective view
- FIG. 6 is a cross-sectional view in a direction perpendicular to an axis.
- the lubricating oil supply device 20 includes four application bodies 31 each having a tongue piece 31 a that abuts on the pole rolling groove 11 a of the screw shaft 11 (see FIG. 2).
- a casing 36 having four lubricating oil storage chambers 35 formed therein for supplying lubricating oil to the lubricating oil storage chamber 35, four lubricating oil storage bodies 37 filled in the lubricating oil storing chamber 35, and lubricating oil
- a relay 38 is provided as control means for controlling the amount of lubricating oil supplied from the storage 37 to the application 31.
- the casing 36 includes a case body 39 in which a lubricant oil storage chamber 35 is formed, and a ring case 40 in which the wiper ring 21 is stored.
- the case body 39 is made of, for example, a resin material, and has a disk-shaped base plate 39 a, a cylindrical outer cylinder 39 b vertically suspended on an outer periphery of the base plate 39 a, and the outer cylinder And a cylindrical inner cylinder 39 c provided inside 39 b.
- the lubricating oil storage chamber 35 is formed between the outer cylinder 39 b and the inner cylinder 39 c.
- the lubricating oil storage chamber 35 is formed in a cylindrical shape so as to be loosely fitted to the screw shaft 11 and has four sub-chambers 35 a, 35 b, the same number as the number of screw shafts 11 in the circumferential direction. It is divided into 35c and 35d.
- the case body 39 has slits 41 extending in the direction of the center line of the screw shaft 11 at even intervals in the circumferential direction corresponding to the compartments 35a, 35b, 35c, and 35d. Opened to form 4 places.
- a plate panel 33 to which an application body 31 and an oil lip portion 32 are attached is inserted into the slit 41.
- the tip of the slit 41 is opened, and a cutout 42 into which the relay body 38 is fitted is formed near the open end.
- a female screw 39 g to be screwed with the male screw 40 a of the ring case 40 is formed on the inner periphery of the distal end side of the outer cylinder 39 b.
- the axial length of the inner cylinder 39c is shorter than the axial length of the outer cylinder 39b so that the ring case 40 can be mounted.
- a cylindrical mouth 39d for connecting the lubricating oil supply device 20 to the nut portion 12 is formed so as to protrude.
- a groove 39e extending in the circumferential direction is formed on the outer periphery of the lower head 39d.
- the mouth 39 d fits into the ring-shaped groove formed in the flange 50 (see Fig. 1).
- the lubricating oil supply device 20 is mounted on the nut portion 12 by engaging and tightening the setscrew 52 with the groove 39e of the mouth 39d.
- cover plate 23 is attached to the side surface of ring case 40 with screws 24.
- Each of the compartments 35a, 35b, 35c, and 35d divided into four equal parts in the circumferential direction is filled with a lubricating oil occluding body 37.
- the lubricating oil occluding body 37 absorbs and retains the lubricating oil.
- a fiber entangled body such as a felt having a high porosity is used for holding. Here, wool felt mixed with 8 1% porosity is used.
- the base plate 39a is provided with air holes 39h communicating with the respective compartments 35a, 35b, 35c and 35d.
- the relay body 38 is disposed in the slit 41 so as to abut the coating body 31 and is not in contact with the compartments 35a, 35b, 35c and 35d.
- the shape of the main body 38 a matches the cross-sectional shape of the slit 41 so that the main body 38 a can be attached to the tip of the slit 41.
- the elongated portion 38b extends from the vicinity of the center of the main body 38a in a direction orthogonal to the main body 38a and comes into contact with the lubricating oil occluding body 37.
- the relay body 38 having the main body 38a and the elongated portion 38b has a substantially T-shape. The elongated portion 38b fits into the notch 42 formed in the partition wall of the case body 39.
- the lubricating oil absorbed and held by the lubricating oil occluding body 37 is supplied to the application body 31 via the elongated portion 38b of the relay body 38 and the main body 38a in order.
- a fiber entangled body such as a felt having an intermediate void ratio between the lubricating oil occluding body 37 and the applying body 31 capable of absorbing and retaining the lubricating oil is suitable.
- the application body 3 1 for applying lubricating oil to the pole rolling groove 1 1 a of the screw shaft 1 1 is formed in a substantially rectangular shape, and the compartments 35 a, 35 b, 35 c, 3 are formed in the slit 41. It is arranged in non-contact with 5d.
- One application body 31 is fitted into each of four slits 41.
- Each of the four application bodies 31 is provided with a substantially rectangular tongue piece 31 a that comes into contact with the pole rolling groove 11 a of the screw shaft 11.
- the tongue piece 31a is chamfered so as to be able to contact the pole rolling groove 11a having a circular cross section.
- a fiber entangled body such as felt having a low porosity that can absorb and hold the lubricating oil is suitable for the coating body 31.
- wool felt having a porosity of 54% is used.
- the lubricating oil necessary for application can be The coated body 31 can be held by the coated body 31 and can have strength enough to withstand sliding with the pole rolling groove 11a.
- the ring case 40 accommodates a wiper ring 21 that lifts up foreign matter attached to the surface of the pole rolling groove 11 a of the screw shaft 11.
- the wiper ring 21 has a scraper surface 21 a that is in close contact with the surface of the pole rolling groove 11 a of the screw shaft 11, and is provided with the scraper surface 21 a so that the inside of the nut portion 12 is Is sealed to prevent intrusion of foreign matter from the outside and prevent leakage of lubrication cutting to the outside.
- Each of the compartments 35a, 35b, 35c, and 35d housed the lubricating oil occluding body 37, and the slit 41 attached the application body 21 and the oil lip section 32 as described above.
- the plate spring 33 is stored, the tongue piece 31 a and the oil lip 32 of the application body 31 project toward the inside of the case body 39.
- the relay body 38 is incorporated in the vicinity of the open end of the slit 41, and the main body 38 a of the relay body 38 comes into contact with the application body 31 and is not in contact with the lubricating oil occluding body 37.
- the elongated portion 38b of the relay 38 contacts the lubricating oil storage 37.
- the ring case 40 After assembling the plate spring 33 with the lubricating oil occluding body 37, relay body 38, coating body 31 and oil lip part 32 attached to the case body 39, the ring case 40 becomes the case. It is screwed into the main body 39, and the inside of the lubricant oil storage chamber 35 is sealed.
- the lubricating oil is always filled at the tip of the tongue piece 31a by capillary action, but at the same time it is held by surface tension and does not overflow.
- lubricating oil is applied from the tongue piece part 31a of the application body 31 to the surface of the pole rolling groove 11a.
- the lubricating oil Q 2 remaining on the surface of the pole rolling groove 1 1 a at the same time that the oil is applied is removed by the oil lip 3 2 Collected in the space D between them.
- the lubricating oil Q 2 when the lubricating oil Q 2 is accumulated in the space D in is held in the tongue portion 3 1 a through the coating member 3 1 from the lubricating oil supply device 2 in the 0.
- the amount of lubricating oil supplied from the lubricating oil occluding body 37 to the applying body 31 is controlled by the relay body 38.
- the amount of this lubricating oil can be controlled to an appropriate amount. it can.
- lubricating oil is externally supplied to the lubricating oil occluding body 37 through a supply hole (not shown) provided in the case body 39. I do.
- FIG. 7 is a diagram showing an end portion of a nut portion of another configuration example of the pole screw according to the present invention.
- this pole screw has a seal portion 60 having a structure described later in detail formed at both ends of the nut portion 12 (only one end portion is shown in the figure) at an end portion of the nut portion 12.
- a seal ring 63 is inserted into the seal entry step 12a, and a retaining ring 63 is press-fitted into the seal entry step 12a.
- the lubricating oil supply mechanism for supplying lubricating oil to the pawl rolling groove 11 a located in the nut part 12 may be a lubricating oil supply mechanism having the configuration shown in FIG. Supply lubrication to a predetermined position (for example, end) Hole may be provided.
- FIG. 8 is a diagram showing a configuration of the seal portion 60
- FIG. 8a is a side view
- FIG. 8b is a plan view
- FIG. 8c is a side view of the oil lip portion 61.
- the seal portion 60 has a configuration in which an oil lip portion 61 is attached to the inner peripheral surface of the metal ring 62 at a predetermined angle with respect to the radial direction.
- the lubricating oil Q such as grease applied to the surface of the pole rolling groove 11a is removed by the oil lip portion 61 and accumulated on the front surface of the oil lip 61. . Therefore, the lubricating oil Q does not leak behind the oil lip portion 61. That is, it does not leak out of the nut portion 12.
- the oil lip portion 61 has a sliding contact portion made of a wear-resistant resin material such as Teflon resin on the tip and front surface of the oil lip body 61a made of a rubber material or the like. 6 1b is crimped and integrated. As shown in FIG. 6, the contact portion 6 1b of the oil lip portion 61 has a shape (arc shape) that is in close contact with the surface of the pole rolling groove 11a of the screw shaft 11. As described above, the oil lip portion 61 is formed integrally with the oil lip body 61 a made of an elastic material and the sliding contact portion 61 b made of a wear-resistant resin.
- a wear-resistant resin material such as Teflon resin
- the entire sliding surface of b can be brought into smooth contact with the pole rolling groove 11a with the oil lip body 61a being always pressed against the same pressure by the elastic force of the oil lip body 61a.
- the lubricating oil Q such as grease applied to the ball rolling groove 11a is efficiently removed by the sliding contact portion 61b.
- 0 is a predetermined lead angle
- the lead angle ⁇ is such that the front surface of the sliding contact portion 61b of the oil lip portion 61 is in the groove direction of the pole rolling groove 11a. Set so that it is at right angles. This increases the retention of the lubricating oil Q. Also, since the oil lip portion 61 is removed from the pole rolling groove 11a and retains the lubricating oil Q, the oil film forming force is increased and a favorable lubricating state can be maintained.
- the sliding contact portion 61b is made of a wear-resistant resin material such as Teflon resin, heat generation and wear can be minimized.
- the oil lip portion 61 is attached to the metal ring 62 at a predetermined lead angle of 0, and the seal portion 60 is attached to both ends of the nut portion 12 so that the nut portion 1 of the screw shaft 11 is attached.
- the lubricating oil applied to the surface of the pole rolling groove 11 a located inside the nut 2 does not leak out of the nut 12 and is retained in the nut 12. As a result, an appropriate amount of lubricating oil is always applied to the surface of the ball rolling groove 11a located in the nut portion 12.
- the oil lip portion 61 having the configuration shown in FIG. 8c i.e., an oil lip body 61a made of an elastic material such as a rubber material, is provided with a slide made of an abrasion-resistant resin material such as a Teflon resin on the front end and the front surface thereof.
- the lubricant is applied from the application body 31 to the surface of the pole rolling groove 11a, and at the same time, the pole rolling groove 11 lubricant Q remain on the surface of a 2 is taken-out ⁇ an oil lip 61 collects in the space D between the coating body 3 1 and Oiruri-up unit 61.
- the accumulated lubricating oil tries to return to the inside of the lubricating oil supply mechanism through the applicator 3 1, so the tip of the applicator 3 1 is always immersed in the lubricating oil Q 2 and is always required for the pole rolling groove 1 1 a A sufficient amount of lubricating oil is secured, and the lubricating oil is not discharged to the outside.
- the tip end of the application body is always immersed in lubricating oil, and a sufficient and sufficient amount of lubricating oil is always secured in the pole rolling groove. Since the lubricating oil is not discharged outside, the consumption of lubricating oil is also reduced.
- the tip of the oil lip portion always comes into sliding contact with the ball rolling groove surface, removes excess lubricating oil in the pole rolling groove, and removes the coating material and the oil lip portion. Therefore, a sufficient amount of lubricating oil is always secured in the pole rolling groove of the invention according to claim 1, and the lubricating oil is not discharged to the outside without waste. Consumption is also reduced.
- the sliding surface of the sliding portion of the oil lip portion is always in close contact with the rolling surface of the pole rolling groove, the lubricating oil in the rolling groove of the pole is removed. Since it is stored in the space between the application body and the oil lip portion, the above-described operation of the invention according to claim 1 is further improved.
- the pole rolling groove located in the nut portion is provided.
- the necessary and sufficient amount of lubricating oil is always ensured, and the lubricating oil is not exhausted to the outside, and the consumption of lubricating oil is reduced.
- the tip of the oil lip portion is always in close contact with the ball rolling groove surface by the elastic body of the oil lip body and is in sliding contact with the ball rolling groove.
- the operation of the invention according to claim 4 is further improved.
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004532703A JP4500165B2 (ja) | 2002-08-28 | 2003-08-26 | ボールねじ |
US10/523,368 US20060096397A1 (en) | 2002-08-28 | 2003-08-26 | Ball screw |
EP03791279A EP1553328B1 (en) | 2002-08-28 | 2003-08-26 | Ball screw |
ES03791279T ES2383596T3 (es) | 2002-08-28 | 2003-08-26 | Tornillo de bolas |
AU2003261718A AU2003261718A1 (en) | 2002-08-28 | 2003-08-26 | Ball screw |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-249581 | 2002-08-28 | ||
JP2002249581 | 2002-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004020872A1 true WO2004020872A1 (ja) | 2004-03-11 |
Family
ID=31972584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/010736 WO2004020872A1 (ja) | 2002-08-28 | 2003-08-26 | ボールねじ |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060096397A1 (ja) |
EP (1) | EP1553328B1 (ja) |
JP (1) | JP4500165B2 (ja) |
CN (1) | CN100376823C (ja) |
AU (1) | AU2003261718A1 (ja) |
ES (1) | ES2383596T3 (ja) |
WO (1) | WO2004020872A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012026478A (ja) * | 2010-07-20 | 2012-02-09 | Nsk Ltd | ボールねじ装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007028579A1 (de) * | 2006-07-11 | 2008-01-17 | Eitec Führungsbahnschutz-Systeme Gmbh | Spindeldichtung |
DE102008000638B4 (de) * | 2008-03-13 | 2022-05-25 | Zf Friedrichshafen Ag | Betätigungseinrichtung zum Betätigen zumindest einer Schalteinrichtung und Verfahren zum Montieren und Demontieren derselben |
CN102927230B (zh) * | 2011-08-11 | 2016-06-01 | 银泰科技股份有限公司 | 滚珠螺杆的双唇式防尘刮刷器结构 |
EP2772667A4 (en) * | 2011-10-24 | 2016-03-02 | Nsk Ltd | BALL SCREWING DEVICE AND EXTRACTION TOOL FOR DUST CLEANING ELEMENTS |
TWM467770U (zh) * | 2013-07-25 | 2013-12-11 | Tbi Motion Technology Co Ltd | 滾珠螺桿 |
CN105917138B (zh) * | 2013-11-25 | 2020-02-28 | 斯凯孚公司 | 线性机电致动器 |
JP6252135B2 (ja) * | 2013-11-28 | 2017-12-27 | 日本精工株式会社 | ボールねじ及びそれに用いられるシール |
JP6248580B2 (ja) * | 2013-11-28 | 2017-12-20 | 日本精工株式会社 | ボールねじ及びそれに用いられるシール |
CN105090408B (zh) * | 2014-05-08 | 2017-11-07 | 宁夏巨能机器人系统有限公司 | 一种机械臂润滑装置 |
TWI567316B (zh) * | 2015-10-14 | 2017-01-21 | Hiwin Tech Corp | With the transmission device of the transmission components |
CN109723782B (zh) * | 2017-10-31 | 2020-07-07 | 上银科技股份有限公司 | 具有防尘盖的滚珠螺帽 |
CN117404457B (zh) * | 2023-12-15 | 2024-02-20 | 常州瑞倍特自动化设备有限公司 | 智能型电动执行器 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3669460A (en) * | 1971-02-22 | 1972-06-13 | Schrillo Co | A screw seal |
US4274294A (en) * | 1979-07-02 | 1981-06-23 | Rca Corporation | Apparatus for converting rotary motion to linear motion |
JPH05172139A (ja) * | 1991-11-18 | 1993-07-09 | Tsubakimoto Seiko:Kk | 直線運動用ベアリングのシール装置 |
US5769543A (en) * | 1995-07-11 | 1998-06-23 | Nsk Ltd. | Sealing device for linear guide apparatus |
JPH10205605A (ja) * | 1997-01-24 | 1998-08-04 | Nippon Seiko Kk | ボールねじのシール |
JP2000145917A (ja) * | 1998-11-11 | 2000-05-26 | Thk Co Ltd | ボールねじ |
JP2000161462A (ja) * | 1998-11-30 | 2000-06-16 | Tsubaki Nakashima Co Ltd | ボールねじのシール装置 |
US6216821B1 (en) * | 1997-07-24 | 2001-04-17 | Nsk Ltd. | Lubricating apparatus for ball screw |
EP1150037A1 (en) | 1999-11-08 | 2001-10-31 | Thk Co., Ltd. | Ball screw |
US20020056330A1 (en) | 2000-03-15 | 2002-05-16 | Thk Co., Ltd. | Lubricant supply device and rolling member screw apparatus using same |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2757548A (en) * | 1954-10-07 | 1956-08-07 | Cleveland Pneumatic Tool Co | Screw scraper and wiper |
US2818745A (en) * | 1955-02-11 | 1958-01-07 | Cleveland Pneumatic Tool Co | Screw cleaning device |
US2793538A (en) * | 1955-12-16 | 1957-05-28 | Beaver Prec Products Inc | Wiper for screw threads |
DE8510866U1 (de) * | 1985-04-13 | 1985-06-13 | Festo KG, 7300 Esslingen | Pneumatische Kolben-Zylinder-Anordnung |
DE3817172A1 (de) * | 1988-05-20 | 1989-11-30 | Kugelfischer G Schaefer & Co | Dichtung fuer einen kugelgewindetrieb |
US4905533A (en) * | 1988-12-27 | 1990-03-06 | Thomson Saginaw Ball Screw Company, Inc. | Seal and scraper assembly for ball bearing screws and the like |
JP3692203B2 (ja) * | 1997-03-10 | 2005-09-07 | 日本精工株式会社 | ボールねじ用密封形シール |
JP3796972B2 (ja) * | 1997-07-24 | 2006-07-12 | 日本精工株式会社 | ボールねじ用の潤滑装置 |
JPH11166608A (ja) * | 1997-12-02 | 1999-06-22 | Ntn Corp | ボールねじ |
-
2003
- 2003-08-26 AU AU2003261718A patent/AU2003261718A1/en not_active Abandoned
- 2003-08-26 EP EP03791279A patent/EP1553328B1/en not_active Expired - Fee Related
- 2003-08-26 CN CNB038204509A patent/CN100376823C/zh not_active Expired - Fee Related
- 2003-08-26 US US10/523,368 patent/US20060096397A1/en not_active Abandoned
- 2003-08-26 ES ES03791279T patent/ES2383596T3/es not_active Expired - Lifetime
- 2003-08-26 WO PCT/JP2003/010736 patent/WO2004020872A1/ja active Application Filing
- 2003-08-26 JP JP2004532703A patent/JP4500165B2/ja not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3669460A (en) * | 1971-02-22 | 1972-06-13 | Schrillo Co | A screw seal |
US4274294A (en) * | 1979-07-02 | 1981-06-23 | Rca Corporation | Apparatus for converting rotary motion to linear motion |
JPH05172139A (ja) * | 1991-11-18 | 1993-07-09 | Tsubakimoto Seiko:Kk | 直線運動用ベアリングのシール装置 |
US5769543A (en) * | 1995-07-11 | 1998-06-23 | Nsk Ltd. | Sealing device for linear guide apparatus |
JPH10205605A (ja) * | 1997-01-24 | 1998-08-04 | Nippon Seiko Kk | ボールねじのシール |
US6216821B1 (en) * | 1997-07-24 | 2001-04-17 | Nsk Ltd. | Lubricating apparatus for ball screw |
JP2000145917A (ja) * | 1998-11-11 | 2000-05-26 | Thk Co Ltd | ボールねじ |
JP2000161462A (ja) * | 1998-11-30 | 2000-06-16 | Tsubaki Nakashima Co Ltd | ボールねじのシール装置 |
EP1150037A1 (en) | 1999-11-08 | 2001-10-31 | Thk Co., Ltd. | Ball screw |
US20020056330A1 (en) | 2000-03-15 | 2002-05-16 | Thk Co., Ltd. | Lubricant supply device and rolling member screw apparatus using same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012026478A (ja) * | 2010-07-20 | 2012-02-09 | Nsk Ltd | ボールねじ装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1553328A1 (en) | 2005-07-13 |
EP1553328A4 (en) | 2011-02-23 |
JP4500165B2 (ja) | 2010-07-14 |
CN1678845A (zh) | 2005-10-05 |
US20060096397A1 (en) | 2006-05-11 |
CN100376823C (zh) | 2008-03-26 |
ES2383596T3 (es) | 2012-06-22 |
AU2003261718A1 (en) | 2004-03-19 |
JPWO2004020872A1 (ja) | 2005-12-15 |
EP1553328B1 (en) | 2012-04-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004020872A1 (ja) | ボールねじ | |
JP2000249209A (ja) | 潤滑油供給装置及びこれを用いた転動体ねじ装置 | |
JP3454502B2 (ja) | 潤滑油供給装置及びこれを用いた転動体ねじ装置 | |
US7587955B2 (en) | Lubricating unit | |
JP2008121889A (ja) | 真空ポンプ用軸受モジュールおよび真空ポンプ | |
US9759262B2 (en) | Rolling bearing apparatus | |
US6595327B2 (en) | Linear motion unit | |
JP2003222127A (ja) | 潤滑油供給装置及び案内装置 | |
JP2002235856A (ja) | 密封装置 | |
US7870935B2 (en) | Traction drive power transmission device | |
JP2007263366A (ja) | 潤滑油供給装置 | |
WO2011024536A1 (ja) | 潤滑油供給装置及びこれを用いた運動案内装置 | |
US4941757A (en) | Grease reservoir | |
JP2006046529A (ja) | 直動案内軸受装置 | |
JP4018012B2 (ja) | 電動機の軸受用潤滑油の封止構造 | |
CA2479004A1 (en) | Lubricant retention assembly | |
JP2008215482A (ja) | スライド軸受 | |
CN107269788B (zh) | 滚珠丝杠 | |
JP4425612B2 (ja) | ボールねじの潤滑シール装置 | |
JP5408461B2 (ja) | オイルシール | |
JPH1130240A (ja) | 軸受装置 | |
JP2009097553A (ja) | 転がり軸受 | |
JP2007064463A (ja) | ボールねじ | |
JP2002357258A (ja) | ボールねじ | |
KR890009141Y1 (ko) | 낚시용 릴의 쓰러스트 베어링 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004532703 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003791279 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038204509 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2003791279 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2006096397 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10523368 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 10523368 Country of ref document: US |