WO2021008199A1 - 运动引导装置以及在运动引导装置中使用的润滑路径部件 - Google Patents

运动引导装置以及在运动引导装置中使用的润滑路径部件 Download PDF

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Publication number
WO2021008199A1
WO2021008199A1 PCT/CN2020/089004 CN2020089004W WO2021008199A1 WO 2021008199 A1 WO2021008199 A1 WO 2021008199A1 CN 2020089004 W CN2020089004 W CN 2020089004W WO 2021008199 A1 WO2021008199 A1 WO 2021008199A1
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WO
WIPO (PCT)
Prior art keywords
lubrication
path
groove
rolling
lubrication groove
Prior art date
Application number
PCT/CN2020/089004
Other languages
English (en)
French (fr)
Inventor
于兴家
刘月
会田智幸
Original Assignee
Thk株式会社
于兴家
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thk株式会社, 于兴家 filed Critical Thk株式会社
Priority to CN202080032577.4A priority Critical patent/CN113767228A/zh
Priority to DE112020003404.6T priority patent/DE112020003404T5/de
Priority to KR1020227004017A priority patent/KR20220031673A/ko
Priority to JP2022502491A priority patent/JP2022541209A/ja
Priority to US17/627,479 priority patent/US11905990B2/en
Publication of WO2021008199A1 publication Critical patent/WO2021008199A1/zh

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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
    • 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
    • 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
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
    • F16C29/064—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with two rows of balls, one on each side of the rail
    • 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
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6629—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
    • 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
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements

Definitions

  • the present invention relates to a motion guide device and a lubrication path member used in the motion guide device, and in particular to a motion guide device provided with a lubrication path member provided with a lubricating oil supply structure, and the lubrication path member.
  • a linear guide which is a kind of motion guide device, includes a rail as a support body and a moving block as a movable body mounted so as to be movable along the rail.
  • a plurality of balls as rolling elements capable of rolling motion are arranged between the track and the moving block.
  • a plurality of balls circulate in an annular ball circulation path, the ball circulation path includes: a ball rolling groove provided on the track and a load ball provided on the moving block and opposed to the ball rolling groove provided on the track
  • a load rolling path composed of rolling grooves, a no-load path provided on the moving block and parallel to the load rolling path, and a U-shaped direction change path provided on the moving block and connecting the load rolling path and the no-load path.
  • Patent Document 1 discloses a lubricant supply structure for supplying lubricant to a direction change path in a linear guide.
  • an embedded recess is formed on the end cover plate which is a part of the moving block, and the linear guide has the embedded recess and the material hardness is the same as or higher than that of the end cover.
  • a separate member with a low cover plate has a groove as a lubricant supply path formed on at least one of the joining surfaces of the recessed portion and the separate member facing each other, and at least one of the opposed joint surfaces
  • One or two or more convex portions extending along the groove as the lubricant supply path are provided.
  • Patent Document 1 has the following technical problems.
  • the lubricant supply path needs to have opposite cross-sectional areas.
  • the prior art linear guide such as Reference Document 1
  • the amount of lubricant used is reduced in consideration of environmental influences, etc., it is difficult to design a lubricant supply path that can cope with both grease lubrication and lubricating oil.
  • Patent Document 1 Japanese Patent Application Publication No. 2004-353698A
  • the present invention is proposed to solve the above technical problems, and its purpose is to provide a motion guide device that can easily cope with both grease lubrication and lubricating oil lubrication and achieve good lubrication, and a motion guide device used in the motion guide device Lubricate the path components.
  • the present invention provides a motion guide device including a support body having rolling element rolling grooves formed on the left and right sides along the length direction, and a plurality of rolling elements that are relatively movably assembled to the support body
  • the movable body on the upper side, the movable body has: a movable body main body provided with a load rolling body rolling groove facing the rolling body rolling groove to form a load rolling path for the rolling body to roll, and the load
  • the rolling path is formed in parallel and the unloaded passage for the rolling element to roll
  • the cover is fixed on the front and back end faces of the moving body;
  • the circulation member is provided on the moving body and the cover
  • the motion guide device is provided with a direction changing path for connecting the loaded rolling path and the unloaded passage to convert the direction of the rolling body, and the cover body is provided with the direction
  • the outer peripheral direction changing portion of the conversion path, the circulating member is provided with the inner peripheral direction changing portion of the direction changing path, and the circulating member has the inner peripheral direction located on
  • the The first lubrication groove and the circulating member constitute a grease lubrication path to supply lubricant
  • the motion guide device is characterized in that the motion guide device further has a lubrication path member, and the lubrication path member is formed with a truncation A second lubrication groove having an area smaller than that of the first lubrication groove, and the lubrication path member includes a fitting portion that is fitted into the first lubrication groove and an insertion portion that is inserted into the circulation member, and is used as a lubricant
  • the first lubrication groove and the first lubrication groove are used.
  • the lubrication path formed by the two lubrication grooves supplies lubricant.
  • the lubrication path can be wide when lubricating with grease, on the other hand, the lubricating path can be narrowed when lubricating with lubricating oil, so that good lubrication can be easily achieved.
  • the motion guide device of the present invention by inserting the insertion portion of the lubrication path member into the circulation member, the lubricating oil can easily reach the inner peripheral direction changing portion and the outer peripheral direction changing portion that constitute the direction changing path. Good lubrication can be easily achieved.
  • Fig. 1 is a perspective view of the motion guide device of the present invention.
  • Fig. 2 is an exploded perspective view of the motion guide device of the present invention.
  • Fig. 3 is an exploded perspective view of the cover, lubrication path member, and circulation member in Fig. 2.
  • Fig. 4(a) is a perspective view of the cover in Fig. 3
  • Fig. 4(b) is a front view of the cover in Fig. 4(a).
  • Fig. 5(a) is a perspective view of the circulation part in Fig. 3
  • Fig. 5(b) is a rear view of the circulation part in Fig. 5(a)
  • Fig. 5(c) is a view of the circulation part in Fig. 5(a) Main view.
  • Fig. 6(a) is a perspective view of the first embodiment of the lubrication path member in Fig. 3
  • Fig. 6(b) is a cross-sectional view of the AA section in Fig. 6(a)
  • Fig. 6(c) is Fig. 6(a) A cross-sectional view of the BB section in.
  • Fig. 7(a) is a perspective view of the second embodiment of the lubrication path member in Fig. 3, in which the end of the fitting portion of the lubrication path member and the positioning protrusion are enlarged
  • Fig. 7(b) is Fig. 7( a) is a cross-sectional view of the AA cross section
  • FIG. 7(c) is a cross-sectional view of the BB cross section in FIG. 7(a)
  • FIG. 7(d) is a perspective view obtained when viewed from the back side of FIG. 7(a).
  • Fig. 8 is a perspective view showing a state where the lubrication path member of the second embodiment shown in Fig. 7(a) is assembled to the circulation member shown in Fig. 5(a).
  • Figure 9 (a) is a diagram of the state before the assembly of the lubrication path component and the circulation component shown in Figure 8 is assembled to the cover shown in Figure 4 (a), and Figure 9 (b) is the state shown in Figure 8
  • the assembly of the lubrication path component and the circulation component is a diagram of the state after the cover shown in Figure 4(a) is assembled, and Figure 9(c) is from the cover shown in Figure 9(b), the lubrication path component and
  • the figure obtained when the back side of the assembly of the circulation member is viewed shows a state in which the positioning protrusion of the lubrication path member is inserted into the positioning hole of the cover.
  • a linear guide 1 as a kind of motion guide device includes a rail 2 as a support body and a moving block 3 as a moving body installed so as to be movable along the rail 2.
  • the moving block 3 is on the rail 2 relative linear motion in the length direction.
  • the rail 2 is installed on the fixed side of the base or the like, and the moving block 3 is used for installing a guided object such as a workbench.
  • FIG. 2 is an exploded perspective view of the linear guide 1 of the present invention.
  • the linear guide 1 of the present invention will be described in detail using FIG. 2.
  • the linear guide 1 includes a rail 2 having ball rolling grooves 2a formed on the left and right sides along the longitudinal direction, and a rail 2 that is relatively movable via a plurality of balls B as rolling elements.
  • the moving block 3 has: a slider 3a as the main body of the moving body, which is provided with a loaded ball rolling groove 3a1 and an unloaded passage 3a2; and an end cover plate 3b as a cover, which is fixed to the front and rear of the slider 3a On both ends.
  • the term “left and right” here refers to positions that are left and right with respect to the center of the track 2 when the track 2 is viewed from the longitudinal direction, and the same applies to the following description.
  • the load ball rolling groove 3a1 of the slider 3a opposes the ball rolling groove 2a of the rail 2 to form a load rolling path for the ball B to roll, and the unloaded passage 3a2 of the slider 3a is formed parallel to the load rolling path. And for ball B to roll.
  • the ball holding member 6 is a member for holding the balls B provided between the rail 2 and the moving block 3. It is arranged between the balls B arranged in two rows up and down, and has a A plate-shaped ball holding portion extending in the longitudinal direction of the rail 2 and orthogonal to the longitudinal direction, and the ball holding portion simultaneously holds the balls B arranged in two rows up and down.
  • the end cover plate 3b is provided with an outer peripheral direction switching portion 3b2, and a circulation member 4 is provided between the slider 3a and the end cover plate 3b.
  • 4 is provided with an inner circumferential direction switching portion 4a, whereby the outer circumferential direction switching portion 3b2 of the end cover plate 3b and the inner circumferential direction switching portion 4a of the circulation member 4 constitute a U-shaped direction switching path.
  • the path is used to connect the loaded rolling path and the unloaded path 3a2 to change the direction of the ball B, whereby the moving block 3 can move freely along the rail 2 and perform linear motion.
  • the screw 8a is a member for screwing and fixing the end cover plate 3b and the circulation member 4 to the slider 3a.
  • a dustproof member 7 is provided on the outer side of the end cover plate 3b provided on the front and rear end faces of the slider 3a.
  • the dustproof member 7 is provided with a through hole 7a for facing
  • a lubricant supply nozzle of a lubricant supply mechanism (not shown) for supplying lubricant to the linear guide 1 is connected to the through hole 7a, and the through hole 7a communicates with the lubricant supply hole 3b1 formed in the end plate 3b,
  • the lubricant supply mechanism can be used to supply lubricant to the direction change path through the lubricant lubrication path provided on the end cover plate 3b, and further to the balls rolling in the direction change path, the loaded rolling path, and the unloaded path 3a2.
  • B for lubrication is a member for screwing and fixing the dust-proof member 7 to the end cover plate 3b.
  • the first lubrication grooves 3b4 of the end cover 3b communicate with the direction change paths on the left and right sides of the rail 2 in the longitudinal direction of the linear guide 1, respectively.
  • the lubricant supply mechanism is used to supply lubricant to the lubricant supply hole 3b1 through the through hole 7a in the dust-proof member 7, the lubricant can be directed to the left and right sides of the rail 2 through the first lubrication groove 3b4. Conversion road supply.
  • the circulation member 4 has a connecting portion 4b that connects the inner circumferential direction switching portions 4a located on the left and right sides of the rail 2, and the end cover plate 3b has a fitting for accommodating the connecting portion 4b
  • the recess 3b3, and the first lubrication groove 3b4 are formed in the fitting recess 3b3.
  • the connecting portion 4b of the circulation member 4 is fitted into the fitting recess 3b3 of the end cover plate 3b, and the inner circumference of the circulation member 4
  • the conversion portion 4a and the outer peripheral direction conversion portion 3b2 of the end cover plate 3b constitute a U-shaped direction conversion path.
  • grease is used as a lubricant when lubricating the linear guide 1, and the first lubrication groove 3b4 and
  • the grease lubrication path formed by the circulation member 4 supplies grease, thereby lubricating the balls B rolling in the direction changing path, the loaded rolling path, and the unloaded path 3a2.
  • the circulation member 4 is formed with a third lubrication groove 4c connected to the first lubrication groove 3b4, and the third lubrication groove 4c is formed at least in the circulation member In 4, the part opposing the upper inner peripheral side direction conversion part 4a. Therefore, when the grease is supplied to the grease lubrication path constituted by the first lubrication groove 3b4 and the circulation member 4, the grease can flow to the third lubrication groove 4c after passing through the first lubrication groove 3b4, and then from the third lubrication groove 4c.
  • the lubrication groove 4c is guided between the upper inner circumferential direction switching portion 4a and the lower inner circumferential direction switching portion 4a, so as to reliably reach the upper inner circumferential direction switching portion 4a and the lower inner circumferential direction switching portion 4a of the circulating member 4
  • the lower inner circumferential direction changing portion 4a lubricates the balls B. It should be noted that in order to make the grease evenly flow to the upper inner circumferential direction switching portion 4a and the lower inner circumferential direction switching portion 4a, the upper inner circumferential direction switching portion 4a and the lower inner circumferential direction switching portion 4a can be made to flow uniformly.
  • the width of the opening of the inner circumferential side direction changing portion 4a is different.
  • the lubrication path member 5 is provided between the end cover plate 3b and the circulation member 4.
  • Fig. 6(a) is a perspective view of the first embodiment of the lubrication path member 5 in Fig. 3
  • Fig. 6(b) is a cross-sectional view of the AA section in Fig. 6(a)
  • Fig. 6(c) is Fig. 6 (a) A cross-sectional view of the BB section.
  • the lubrication path member 5 includes a fitting portion 5a that is fitted into the first lubrication groove 3b4 and an insertion portion 5b that is inserted into the circulation member 4.
  • the second lubrication groove 5c is formed in the fitting portion 5a and the insertion portion 5c on.
  • the insertion portion 5b of the lubrication path member 5 is inserted into the third lubrication groove 4c of the circulation member 4, and the lubrication path member 5 is inserted
  • the joint portion 5a is fitted into the first lubrication groove 3b4 and the coupling portion 4b of the circulation member 4 is fitted in such a manner that the second lubrication groove 5c on the fitting portion 5a is opposed to the first lubrication groove 3b4 of the end cover plate 3b
  • the inner peripheral direction changing portion 4a of the circulating member 4 and the outer peripheral direction changing portion 3b2 of the end cover plate 3b constitute a U-shaped direction changing path.
  • lubricating oil is used as a lubricant, and lubricating oil is supplied to the lubricating oil path formed by the first lubricating groove 3b4 and the second lubricating groove 5c, thereby providing a positive effect on the direction change path, load rolling path, and The balls B rolling in the load passage 3a2 are lubricated.
  • the lubrication path can be widened when lubricating with grease.
  • the lubrication path member 5 as described above can be provided.
  • the lubrication path is narrow, so that good lubrication can be easily achieved.
  • the third lubrication groove 4c of the circulation member 4 as shown in Figs. 5(a) and 5(b) is also connected to the second lubrication groove 5c of the lubrication path member 5, thus
  • the lubricating oil can flow to the third lubricating groove 4c after passing through the first lubricating groove 3b4 and the second lubricating groove 5c facing each other,
  • the third lubrication groove 4c is guided between the upper inner circumferential direction switching portion 4a and the lower inner circumferential direction switching portion 4a, so as to reliably reach the upper inner circumferential side of the circulating member 4
  • the direction changing portion 4a and the lower inner circumferential direction changing portion 4a lubricate the balls B.
  • the lubricating oil can easily reach the inner peripheral direction constituting the direction change path.
  • the switching portion 4a and the outer circumferential direction switching portion 3b2 can easily achieve good lubrication.
  • the thickness d of the insertion portion 5b of the lubrication path member 5 is formed to be smaller than that of the lubrication path member 5.
  • the thickness D of the joint 5a is formed to be smaller than that of the lubrication path member 5.
  • the insertion portion 5b of the lubrication path member 5 can be easily inserted into the third lubrication groove 4c of the circulation member 4.
  • a chamfer is formed on the side surface of the end portion 5b1 of the insertion portion 5b of the lubrication path member 5.
  • the front surface of the end 5b1 of the insertion portion 5b of the lubrication path member 5 (that is, the surface on which the second lubrication groove 5c is formed) may be chamfered.
  • chamfers may be formed on both the side surface and the front surface of the end portion 5b1 of the insertion portion 5b of the lubrication path member 5.
  • the insertion part 5b of the lubrication path member 5 can be inserted into the 3rd lubrication groove 4c of the circulation member 4 more easily.
  • ribs 5d for preventing leakage of lubricating oil are formed on both sides of the second lubrication groove 5c of the lubrication path member 5.
  • Fig. 7(a) is a perspective view of the second embodiment of the lubrication path member 5 in Fig. 3, in which the end 5a1 of the fitting portion 5a of the lubrication path member 5 and the positioning protrusion 5e are enlarged and shown
  • Fig. 7(b ) Is a cross-sectional view of the AA section in Figure 7 (a)
  • Figure 7 (c) is a cross-sectional view of the BB section in Figure 7 (a)
  • Figure 7 (d) is obtained when viewed from the back side of Figure 7 (a) Perspective view.
  • the lubrication path member 5 of the second embodiment also has a fitting portion 5a, an insertion portion 5b, a second lubrication groove 5c, and a rib 5d.
  • the lubrication path member 5 of the second embodiment differs from the lubrication path member 5 of the first embodiment in the shape of the end 5a1 of the fitting portion 5a.
  • the end portion 3b41 of the first lubrication groove 3b4 of the end cover plate 3b connected to the outer circumferential direction conversion portion 3b2 is formed in a tapered shape, and accordingly, As shown in FIG. 7(a), the end 5a1 of the fitting portion 5a of the lubrication path member 5 connected to the insertion portion 5b is formed in a tapered shape corresponding to the tapered shape of the end 3b41.
  • end portion 3b41 of the first lubrication groove 3b4 of the end cover plate 3b which is connected to the outer peripheral direction switching portion 3b2, is formed into a tapered shape, so that when grease is used to lubricate the grease to flow to the direction switching path , Can increase the pressure of grease, so as to achieve better lubrication.
  • the lubrication path member 5 of the second embodiment differs from the lubrication path member 5 of the first embodiment in that it further has a positioning protrusion 5e.
  • the lubrication path member 5 is formed with a positioning protrusion 5e for positioning on the end cover plate 3b.
  • the end The cover plate 3b is formed with a positioning hole 3b5 for inserting the positioning protrusion 5e.
  • the lubrication path member 5 by providing the positioning protrusion 5e and the positioning hole 3b5 as described above, when the lubrication path member 5 is fitted and inserted into the end cover plate 3b, the lubrication path member 5 and the end cover can be easily realized Positioning of board 3b.
  • a part of the second lubricating groove 5c is formed in the positioning protrusion 5e.
  • the positioning protrusion 5e when the positioning protrusion 5e is inserted into the positioning hole 3b5 of the end cover plate 3b, the positioning protrusion 5e can be easily deformed and the positioning protrusion 5e can be inserted into the positioning hole 3b5.
  • the side surface of the end 5b1 of the insertion portion 5b of the lubrication path member 5 of the second embodiment is also chamfered.
  • the front surface of the end 5b1 of the insertion portion 5b of the lubrication path member 5 (that is, the surface on which the second lubrication groove 5c is formed) may be chamfered.
  • chamfers may be formed on both the side surface and the front surface of the end portion 5b1 of the insertion portion 5b of the lubrication path member 5.
  • the insertion portion 5b of the lubrication path member 5 of the second embodiment can be more easily inserted into the third lubrication groove 4c of the circulation member 4.
  • the insertion portion 5b of the lubrication path member 5 is inserted into the third lubrication groove 4c of the circulation member 4, and the end of the insertion portion 5b reaches between the upper and lower inner circumferential direction switching portions 4a of the circulation member 4 position.
  • the assembly formed by assembling the lubrication path member 5 of the first embodiment to the circulation member 4 shown in FIG. 5(a) is substantially the same as the assembly shown in FIG. 8, and is also the end of the insertion portion 5b.
  • the portion 5b1 reaches a position between the upper and lower inner circumferential direction switching portions 4a of the circulation member 4, and the joint portion between the lubrication path member 5 and the circulation member 4 is in close contact with each other without a gap.
  • Fig. 9(a) is a diagram of a state before the assembly of the lubrication path member 5 and the circulation member 4 shown in Fig. 8 is assembled to the end cover plate 3b shown in Fig. 4(a).
  • the positioning protrusion 5e of the lubrication path member 5 and the end cover plate 3b are positioned
  • the holes 3b5 are assembled in an aligned manner, whereby an assembly of the end cover plate 3b, the lubrication path member 5, and the circulation member 4 as shown in FIG. 9(b) can be easily obtained.
  • the center of the positioning hole 3b5 of the end cover plate 3b coincides with the center of the lubricant supply hole 3b1 of the end cover plate 3b.
  • the lubricating oil can be directly supplied from the lubricant supply hole 3b1 to the positioning protrusion 5e of the lubrication path member 5 that is fitted into the positioning hole 3b5, thereby providing the lubricating oil. It can be easily supplied to the direction change path to achieve good lubrication.
  • the end cover plate 3b when the lubrication path member 5 is made of a soft material, when the end cover plate 3b is mounted on the slider 3a, the end cover plate 3b can be pressed to deform the soft lubrication path member 5.
  • the circulation member 4 and the lubrication path member 5 are closely attached to the end cover plate 3b, thereby effectively preventing the leakage of lubricating oil.
  • the present invention provides a linear guide 1 with a longitudinal direction Rails 2 with ball rolling grooves 2a are formed on the left and right sides, and a moving block 3 assembled on the rail 2 in a relatively movable manner via a plurality of balls B.
  • the moving block 3 has: a slider 3a provided with a ball
  • the rolling grooves 2a face each other to form a load rolling path for the ball B to roll, and the load ball rolling groove 3a1 is formed in parallel with the load rolling path and is formed in parallel with the no-load path 3a2 for the ball B to roll;
  • the end cover 3b is fixed to the slider 3a on the front and rear end faces;
  • the end cover plate 3b is provided with the outer peripheral direction changing portion 3b2 of the direction changing path, and the circulating member 4 is provided with the inner peripheral direction changing portion 4a of the direction changing path.
  • the circulating member 4 has the left and right sides of the track 2.
  • the connecting portion 4b connected to the inner peripheral direction switching portions 4a on both sides, the end cover plate 3b has a fitting recess 3b3 for accommodating the connecting portion 4b, and a first lubricating groove 3b4 is formed in the fitting recess 3b3, which is used as a lubricant
  • a grease lubrication path composed of the first lubrication groove 3b4 and the circulation member 4 is used to supply lubricant.
  • the linear guide 1 is characterized in that the linear guide 1 further has a lubrication path member 5, a lubrication path member 5 is formed with a second lubrication groove 5c having a smaller cross-sectional area than the first lubrication groove 3b4, and the lubrication path member 5 is provided with a fitting portion 5a that is fitted into the first lubrication groove 3b4 and an insertion portion 5b that is inserted into the circulation member 4, as When lubricating oil is used as a lubricant, by inserting the insertion portion 5b into the circulation member 4 and fitting the fitting portion 5a into the first lubrication groove 3b4, the use of the first lubrication groove 3b4 and the second lubrication groove 5c
  • the lubrication path is configured to supply lubricant.
  • the lubrication path can be wide when lubricating with grease.
  • the lubricating path can be narrowed when lubricating with lubricating oil, so that good lubrication can be easily achieved.
  • the linear guide 1 of the present invention by inserting the insertion portion 5b of the lubrication path member 5 into the circulation member 4, the lubricating oil can easily reach the inner peripheral direction changing portion 4a and the outer peripheral direction forming the direction changing path.
  • the conversion portion 3b2 can easily achieve good lubrication.
  • the circulation member 4 is formed with a third lubrication groove 4c connected to the first lubrication groove 3b4 or the second lubrication groove 5c, and when the insertion portion 5b is inserted into the circulation member 4, the insertion portion 5b is inserted into the third lubrication groove 4c.
  • the lubricant when the lubricant is supplied, the lubricant can reliably reach the upper inner circumferential direction changing portion 4a and the lower inner circumferential direction changing portion 4a of the circulating member 4 to lubricate the balls B.
  • the thickness of the insertion portion 5b is formed to be smaller than the thickness of the fitting portion 5a.
  • the insertion portion 5b of the lubrication path member 5 can be easily inserted into the third lubrication groove 4c of the circulation member 4.
  • the end portion 3b41 of the first lubrication groove 3b4 connected to the outer circumferential direction conversion portion 3b2 is formed in a tapered shape
  • the end portion 5a1 of the fitting portion 5a connected to the insertion portion 5b is formed in a tapered shape corresponding to the tapered shape .
  • the grease By forming the end 3b41 of the first lubrication groove 3b4 of the end cover plate 3b, which is connected to the outer peripheral direction switching portion 3b2, into a tapered shape, the grease can be increased when the grease flows to the direction switching path by grease lubrication. Pressure to achieve better lubrication.
  • the lubrication path member 5 is formed with a positioning protrusion 5e for positioning on the end cover plate 3b, and the end cover plate 3b is formed with a positioning hole 3b5 for inserting the positioning protrusion 5e.
  • the positioning protrusion 5e and the positioning hole 3b5 as described above, when the lubrication path member 5 is fitted and inserted into the end cover plate 3b, the positioning of the lubrication path member 5 and the end cover plate 3b can be easily achieved.
  • the center of the positioning hole 3b5 coincides with the center of the lubricant supply hole 3b1 provided in the end cover plate 3b.
  • the lubricating oil can be directly supplied from the lubricant supply hole 3b1 to the positioning protrusion 5e of the lubrication path member 5 that is fitted into the positioning hole 3b5, thereby providing the lubricating oil. It can be easily supplied to the direction change path to achieve good lubrication.
  • a part of the second lubricating groove 5c is formed in the positioning protrusion 5e.
  • the positioning protrusion 5e when the positioning protrusion 5e is inserted into the positioning hole 3b5 of the end cover plate 3b, the positioning protrusion 5e can be easily deformed and the positioning protrusion 5e can be inserted into the positioning hole 3b5.
  • ribs 5d for preventing leakage of lubricating oil are formed on both sides of the second lubricating groove 5c.
  • the present invention provides a lubrication path member, which is the lubrication path member 5 in the linear guide 1 of any one of the above-mentioned embodiments.
  • the linear guide can obtain the above-mentioned technical effects.
  • the third lubrication groove 4c of the circulation member 4 may be filled with an adhesive or the like after the lubrication path member 5 is mounted on the circulation member 4.

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Abstract

一种运动引导装置（1），运动引导装置（1）具备支承体（2）和移动体（3），移动体（3）具有移动体主体（3a）、盖体（3b）和循环部件（4），盖体（3b）具有第一润滑槽（3b4），在作为润滑剂而使用润滑脂的情况下，利用由第一润滑槽（3b4）和循环部件（4）构成的润滑脂润滑路径来供给润滑剂，其中，运动引导装置（1）还具有润滑路径部件（5），润滑路径部件（5）形成有截面积比第一润滑槽（3b4）小的第二润滑槽（5c），在作为润滑剂而使用润滑油的情况下，利用由第一润滑槽（3b4）和第二润滑槽（5c）构成的润滑油润滑路径来供给润滑剂。由此，在运动引导装置中，在利用润滑脂进行润滑时能够使润滑路径较宽，在利用润滑油进行润滑时能够使润滑路径较窄，从而能够容易地实现良好的润滑。

Description

运动引导装置以及在运动引导装置中使用的润滑路径部件 技术领域
本发明涉及一种运动引导装置以及在该运动引导装置中使用的润滑路径部件，具体而言，涉及一种具备设置有润滑油供给结构的润滑路径部件的运动引导装置以及该润滑路径部件。
背景技术
作为运动引导装置的一种的直线导轨具备作为支承体的轨道和以能够沿着轨道移动的方式安装的作为移动体的移动块。在轨道和移动块之间设置有多个能够进行滚动运动的作为滚动体的滚珠。多个滚珠在环状的滚珠循环路中循环，该滚珠循环路包括：由在轨道上设置的滚珠滚动槽和在移动块上设置且与该在轨道上设置的滚珠滚动槽对置的负荷滚珠滚动槽构成的负荷滚动路、在移动块上设置且与该负荷滚动路平行的无负荷通路、以及在移动块上设置且将负荷滚动路和无负荷通路连接的U字状的方向转换路。
在上述的直线导轨中，需要设置对方向转换路供给润滑剂的润滑剂供给结构。
举例来说，专利文献1公开了一种用于直线导轨中的对方向转换路供给润滑剂的润滑剂供给结构。具体地，在该专利文献1中，在作为移动块的一部分的盖体即端盖板上形成有嵌入凹部，并且直线导轨具有嵌入该嵌入凹部且材料硬度与该端盖板相同或者比该端盖板低的分体构件，在该嵌入凹部和分体构件的相互对置的接合面中的至少一方形成有作为润滑剂供给路径的槽，且在该相互对置的接合面中的至少一方设置有沿着作为润滑剂供给路径的槽延伸的一条或两条以上的凸部。
但是，在上述的专利文献1中，存在如下的技术问题。
具体来说，在作为润滑剂而供给润滑脂的情况下，需要增大润滑剂供给路径的截面积并且缩短润滑剂供给路径的长度，另一方面，在作为润滑剂而供给润滑油的情况下，需要减小润滑剂供给路径的截面积并且缩短润滑剂供给路径的长度。如果将润滑剂供给路径的长度设为相同，则在供给润滑脂时需要增大润滑剂供给路径的截面积，在供给润滑油时需要减小润滑剂供给路径的截面 积。于是，在供给润滑脂时和供给润滑油时，需要使润滑剂供给路径具有相反的截面积。在对比文件1这样的现有技术的直线导轨中，需要将润滑剂供给路径设计为能够应对润滑脂润滑和润滑油润滑这双方的最优的截面积。但是，随着考虑到环境的影响等而降低润滑剂的使用量，难以设计出能够应对润滑脂润滑和润滑油润滑这双方的润滑剂供给路径。
专利文献1：日本特开2004-353698A号公报
发明内容
本发明正是为了解决上述技术问题而提出的，其目的在于提供一种能够容易地应对润滑脂润滑和润滑油润滑这双方而实现良好的润滑的运动引导装置以及在该运动引导装置中使用的润滑路径部件。
为了实现上述目的，本发明提供一种运动引导装置，具备沿长度方向在左右两侧面形成有滚动体滚动槽的支承体和经由多个滚动体而以能够相对移动的方式组装于所述支承体上的移动体，所述移动体具有：移动体主体，其设置有与所述滚动体滚动槽对置而形成供所述滚动体滚动的负荷滚动路的负荷滚动体滚动槽和与所述负荷滚动路平行地形成且供所述滚动体滚动的无负荷通路；盖体，其固定于所述移动体主体的前后的两端面上；循环部件，其设置在所述移动体主体与所述盖体之间，在所述运动引导装置中设置有用于将所述负荷滚动路和所述无负荷通路连接而使所述滚动体进行方向转换的方向转换路，所述盖体设置有所述方向转换路的外周侧方向转换部，所述循环部件设置有所述方向转换路的内周侧方向转换部，所述循环部件具有将位于所述支承体的左右两侧的所述内周侧方向转换部连结的连结部，所述盖体具有收容所述连结部的嵌合凹部，并且在所述嵌合凹部形成有第一润滑槽，在作为润滑剂而使用润滑脂的情况下，利用由所述第一润滑槽和所述循环部件构成的润滑脂润滑路径来供给润滑剂，所述运动引导装置的特征在于，所述运动引导装置还具有润滑路径部件，所述润滑路径部件形成有截面积比所述第一润滑槽小的第二润滑槽，所述润滑路径部件具备与所述第一润滑槽嵌合的嵌合部和向所述循环部件插入的插入部，在作为润滑剂而使用润滑油的情况下，通过将所述插入部插入到所述循环部件且使所述嵌合部嵌合于所述第一润滑槽，由此利用由所述第一润滑槽和所述第二润滑槽构成的润滑油润滑路径来供给润滑剂。
发明效果
根据本发明的运动引导装置，在利用润滑脂进行润滑时能够使润滑路径较宽，另一方面，在利用润滑油进行润滑时能够使润滑路径较窄，从而能够容易地实现良好的润滑。
另外，根据本发明的运动引导装置，通过将润滑路径部件的插入部插入循环部件，由此能够使润滑油容易地到达构成方向转换路的内周侧方向转换部和外周侧方向转换部，从而能够容易地实现良好的润滑。
附图说明
图1是本发明的运动引导装置的立体图。
图2是本发明的运动引导装置的分解立体图。
图3是图2中的盖体、润滑路径部件和循环部件的分解立体图。
图4(a)是图3中的盖体的立体图，图4(b)是图4(a)中的盖体的主视图。
图5(a)是图3中的循环部件的立体图，图5(b)是图5(a)中的循环部件的后视图，图5(c)是图5(a)中的循环部件的主视图。
图6(a)是图3中的润滑路径部件的第一实施方式的立体图，图6(b)是图6(a)中的A-A剖面的剖视图，图6(c)是图6(a)中的B-B剖面的剖视图。
图7(a)是图3中的润滑路径部件的第二实施方式的立体图，其中，放大示出了润滑路径部件的嵌合部的端部以及定位突起，图7(b)是图7(a)中的A-A剖面的剖视图，图7(c)是图7(a)中的B-B剖面的剖视图，图7(d)是从图7(a)的背面侧观察时得到的立体图。
图8是示出了将图7(a)所示的第二实施方式的润滑路径部件组装于图5(a)所示的循环部件的状态的立体图。
图9(a)是将图8所示的润滑路径部件和循环部件的组装体组装于图4(a)所示的盖体之前的状态的图，图9(b)是将图8所示的润滑路径部件和循环部件的组装体组装于图4(a)所示的盖体之后的状态的图，图9(c)是从图9(b)所示的盖体、润滑路径部件和循环部件的组装体的背面侧观察时得到的图，示出了润滑路径部件的定位突起插入到盖体的定位孔中的状态。
符号说明
1直线导轨(运动引导装置)
2轨道(支承体)
2a滚珠滚动槽
3移动块(移动体)
3a滑块(移动体主体)
3a1负荷滚珠滚动槽
3a2无负荷通路
3b端盖板(盖体)
3b1润滑剂供给孔
3b2外周侧方向转换部
3b3嵌合凹部
3b4第一润滑槽
3b41端部
3b5定位孔
4循环部件
4a内周侧方向转换部
4b连结部
4c第三润滑槽
5润滑路径部件
5a嵌合部
5a1端部
5b插入部
5b1端部
5c第二润滑槽
5d肋
5e定位突起
6滚珠保持构件
7防尘部件
7a贯通孔
8a、8b螺钉
B滚珠(滚动体)
具体实施方式
以下，参照附图对本发明的各部分结构和功能进行详细的说明。另外，在以下的说明中，对于相同或相应的构件或结构标注相同的符号而省略重复的说明。
如图1所示，作为运动引导装置的一种的直线导轨1具备作为支承体的轨道2和以能够沿着轨道2移动自如的方式安装的作为移动体的移动块3，移动块3在轨道2的长度方向上相对地进行直线运动。另外，轨道2安装于基座等的固定侧，移动块3用于安装工作台等被引导对象。
接着，图2是本发明的直线导轨1的分解立体图，以下，利用该图2对本发明的直线导轨1进行详细的说明。
如图2所示，直线导轨1具备沿长度方向在左右两侧面形成有滚珠滚动槽2a的轨道2和经由多个作为滚动体的滚珠B而以能够相对移动的方式组装于该轨道2上的移动块3，该移动块3具有：作为移动体主体的滑块3a，其设置有负荷滚珠滚动槽3a1和无负荷通路3a2；作为盖体的端盖板3b，其固定于滑块3a的前后的两端面上。需要说明的是，在此所谓的“左右”是指从长度方向观察轨道2时相对于该轨道2的中心而成为左和右的位置，在以下的说明中也是同样的。另外，滑块3a的负荷滚珠滚动槽3a1与轨道2的滚珠滚动槽2a对置而形成供滚珠B滚动的负荷滚动路，并且，滑块3a的无负荷通路3a2与该负荷滚动路平行地形成且供滚珠B滚动。
另外，如图2所示，滚珠保持构件6是设置于轨道2和移动块3之间而用于保持滚珠B的构件，配置于上下排列成两列的滚珠B之间，并且具有形成为在轨道2的长度方向上延伸的板状且与该长度方向正交的滚珠保持部，该滚珠保持部同时保持上下排列成两列的滚珠B。
并且，如图2和后述的图4(a)所示，端盖板3b设置有外周侧方向转换部3b2，在滑块3a与端盖板3b之间设置有循环部件4，该循环部件4设置有内周侧方向转换部4a，由此，通过端盖板3b的外周侧方向转换部3b2和循环 部件4的内周侧方向转换部4a构成U字状的方向转换路，该方向转换路用于将负荷滚动路和无负荷通路3a2连接而使滚珠B进行方向转换，由此，移动块3能够沿着轨道2移动自如地进行直线运动。进而，如图2所示，螺钉8a是用于将端盖板3b和循环部件4拧止固定于滑块3a上的构件。
另外，如图2所示，在设置于滑块3a的前后的两端面上的端盖板3b的外侧设置有防尘部件7，在该防尘部件7上设置有贯通孔7a，用于向直线导轨1供给润滑剂的润滑剂供给机构(未图示)的润滑剂供给嘴连接于该贯通孔7a，并且，该贯通孔7a与在端盖板3b上形成的润滑剂供给孔3b1连通，由此能够利用润滑剂供给机构经由在端盖板3b上设置的润滑剂润滑路径而向方向转换路供给润滑剂，进而对在该方向转换路、负荷滚动路和无负荷通路3a2中滚动的滚珠B进行润滑。进而，如图2所示，螺钉8b是用于将防尘部件7拧止固定于端盖板3b上的构件。
另外，如图4(a)所示，端盖板3b的第一润滑槽3b4分别与直线导轨1中的位于轨道2的长度方向左右两侧的方向转换路连通。由此，在利用润滑剂供给机构经由防尘部件7上的贯通孔7a而向润滑剂供给孔3b1供给润滑剂时，润滑剂能够经由第一润滑槽3b4分别向轨道2的左右两侧的方向转换路供给。
以下，参照图3～图5(c)详细地说明在本发明的直线导轨1中利用润滑剂供给机构作为润滑剂而供给润滑脂时的润滑脂润滑路径。
如图3～图5(c)所示，循环部件4具有将位于轨道2的左右两侧的内周侧方向转换部4a连结的连结部4b，端盖板3b具有收容连结部4b的嵌合凹部3b3，并且在嵌合凹部3b3形成有第一润滑槽3b4。
在循环部件4直接安装于端盖板3b上的情况下，具体来说，循环部件4的连结部4b嵌合于端盖板3b的嵌合凹部3b3，并且，循环部件4的内周侧方向转换部4a和端盖板3b的外周侧方向转换部3b2构成U字状的方向转换路，此时，对直线导轨1进行润滑时作为润滑剂而使用润滑脂，向由第一润滑槽3b4和循环部件4构成的润滑脂润滑路径供给润滑脂，由此对在该方向转换路、负荷滚动路和无负荷通路3a2中滚动的滚珠B进行润滑。
需要说明的是，如图5(a)和图5(b)所示，循环部件4形成有与第一润滑槽3b4连结的第三润滑槽4c，该第三润滑槽4c至少形成在循环部件4中的与上侧的内周侧方向转换部4a对置的部位。由此，在向由第一润滑槽3b4 和循环部件4构成的润滑脂润滑路径供给润滑脂时，润滑脂能够在通过第一润滑槽3b4后向第三润滑槽4c流动，进而从该第三润滑槽4c被引导到上侧的内周侧方向转换部4a与下侧的内周侧方向转换部4a之间，从而可靠地到达循环部件4中的上侧的内周侧方向转换部4a和下侧的内周侧方向转换部4a而对滚珠B进行润滑。需要说明的是，为了使润滑脂均匀地向上侧的内周侧方向转换部4a和下侧的内周侧方向转换部4a流动，可以使上侧的内周侧方向转换部4a和下侧的内周侧方向转换部4a的开口的宽度不同。
接下来，参照图3以及图6(a)～图6(c)和图7(a)～图7(d)详细地说明在本发明的直线导轨1中利用润滑剂供给机构作为润滑剂而供给润滑油时的润滑油润滑路径。
如图3所示，润滑路径部件5设置于端盖板3b和循环部件4之间。
另外，图6(a)是图3中的润滑路径部件5的第一实施方式的立体图，图6(b)是图6(a)中的A-A剖面的剖视图，图6(c)是图6(a)中的B-B剖面的剖视图。
如图6(a)所示，润滑路径部件5具备与第一润滑槽3b4嵌合的嵌合部5a和向循环部件4插入的插入部5b，并且，润滑路径部件5形成有截面积比第一润滑槽3b4小的第二润滑槽5c，更具体地说，插入部5b是向循环部件4的第三润滑槽4c插入的部分，第二润滑槽5c形成于嵌合部5a和插入部5c上。
在循环部件4经由润滑路径部件5安装于端盖板3b上的情况下，具体来说，润滑路径部件5的插入部5b插入到循环部件4的第三润滑槽4c，润滑路径部件5的嵌合部5a以该嵌合部5a上的第二润滑槽5c与端盖板3b的第一润滑槽3b4对置的方式嵌合于该第一润滑槽3b4且循环部件4的连结部4b嵌合于端盖板3b的嵌合凹部3b3，并且，循环部件4的内周侧方向转换部4a和端盖板3b的外周侧方向转换部3b2构成U字状的方向转换路，此时，对直线导轨1进行润滑时作为润滑剂而使用润滑油，向由第一润滑槽3b4和第二润滑槽5c构成的润滑油润滑路径供给润滑油，由此对在该方向转换路、负荷滚动路和无负荷通路3a2中滚动的滚珠B进行润滑。
由此，在本发明的直线导轨1中，在利用润滑脂进行润滑时能够使润滑路径较宽，另一方面，在利用润滑油进行润滑时通过设置如上所述的润滑路径部件5而能够使润滑路径较窄，从而能够容易地实现良好的润滑。
需要说明的是，如图5(a)和图5(b)所示的循环部件4的第三润滑槽4c也与润滑路径部件5的第二润滑槽5c连结，由此，在向由第一润滑槽3b4和第二润滑槽5c构成的润滑油润滑路径供给润滑油时，润滑油能够在通过相互对置的第一润滑槽3b4和第二润滑槽5c后向第三润滑槽4c流动，进而从该第三润滑槽4c被引导到上侧的内周侧方向转换部4a与下侧的内周侧方向转换部4a之间，从而可靠地到达循环部件4中的上侧的内周侧方向转换部4a和下侧的内周侧方向转换部4a而对滚珠B进行润滑。
换言之，在本发明的直线导轨1中，通过将润滑路径部件5的插入部5b插入循环部件4的第三润滑槽4c，由此能够使润滑油容易地到达构成方向转换路的内周侧方向转换部4a和外周侧方向转换部3b2，从而能够容易地实现良好的润滑。
另外，如图2和图6(b)、图6(c)所示，在沿轨道2的长度方向观察时，润滑路径部件5的插入部5b的厚度d形成得小于润滑路径部件5的嵌合部5a的厚度D。
由此，能够将润滑路径部件5的插入部5b容易地插入循环部件4的第三润滑槽4c。
进而，如图6(a)所示，在润滑路径部件5的插入部5b的端部5b1的侧面形成有倒角。
需要说明的是，虽未图示，但也可以在润滑路径部件5的插入部5b的端部5b1的前表面(即，形成有第二润滑槽5c的面)形成有倒角。
当然，虽未图示，但也可以在润滑路径部件5的插入部5b的端部5b1的侧面和前表面都形成有倒角。
由此，能够将润滑路径部件5的插入部5b更容易地插入循环部件4的第三润滑槽4c。
再有，如图6(b)和图6(c)所示，在润滑路径部件5的第二润滑槽5c的两侧形成有用于防止润滑油泄露的肋5d。
以上，对本发明的润滑路径部件5的第一实施方式进行了说明。
接着，参照图7(a)～图7(d)对本发明的润滑路径部件5的第二实施方式进行说明。
需要说明的是，对于润滑路径部件5的第二实施方式中的与第一实施方式 相同或相应的构件或结构标注相同的符号而省略重复的说明。
图7(a)是图3中的润滑路径部件5的第二实施方式的立体图，其中，放大示出了润滑路径部件5的嵌合部5a的端部5a1以及定位突起5e，图7(b)是图7(a)中的A-A剖面的剖视图，图7(c)是图7(a)中的B-B剖面的剖视图，图7(d)是从图7(a)的背面侧观察时得到的立体图。
如图7(a)～图7(d)所示，与第一实施方式同样地，第二实施方式的润滑路径部件5也具有嵌合部5a、插入部5b、第二润滑槽5c和肋5d。
如图7(a)所示，第二实施方式的润滑路径部件5相对于第一实施方式的润滑路径部件5的不同点在于嵌合部5a的端部5a1的形状。
具体来说，如图4(a)和图4(b)所示，端盖板3b的第一润滑槽3b4的与外周侧方向转换部3b2连结的端部3b41形成为锥形状，相应地，如图7(a)所示，润滑路径部件5的嵌合部5a的与插入部5b连结的端部5a1形成为与端部3b41的锥形状对应的锥形状。
需要说明的是，通过将端盖板3b的第一润滑槽3b4的与外周侧方向转换部3b2连结的端部3b41形成为锥形状，在利用润滑脂润滑而使润滑脂向方向转换路流动时，能够提高润滑脂的压力，从而实现更加良好的润滑。
另外，如图7(a)所示，第二实施方式的润滑路径部件5相对于第一实施方式的润滑路径部件5的不同点还在于进一步具有定位突起5e。
具体来说，如图7(a)所示，润滑路径部件5形成有用于定位于端盖板3b的定位突起5e，相应地，如图4(a)和图4(b)所示，端盖板3b形成有用于嵌入定位突起5e的定位孔3b5。
在本发明的直线导轨1中，通过设置如上所述的定位突起5e和定位孔3b5，在将润滑路径部件5向端盖板3b嵌合插入时，能够容易地实现润滑路径部件5和端盖板3b的定位。
进而，如图7(a)所示，在定位突起5e形成有第二润滑槽5c的一部分。
由此，在将定位突起5e向端盖板3b的定位孔3b5插入时，能够容易地使定位突起5e变形而将该定位突起5e插入定位孔3b5。
需要说明的是，如图7(a)所示，在第二实施方式的润滑路径部件5的插入部5b的端部5b1的侧面也形成有倒角。
需要说明的是，虽未图示，但也可以在润滑路径部件5的插入部5b的端 部5b1的前表面(即，形成有第二润滑槽5c的面)形成有倒角。
当然，虽未图示，但也可以在润滑路径部件5的插入部5b的端部5b1的侧面和前表面都形成有倒角。
由此，如第一实施方式的润滑路径部件5那样能够将第二实施方式的润滑路径部件5的插入部5b更容易地插入循环部件4的第三润滑槽4c。
以上，对本发明的润滑路径部件5的第二实施方式进行了说明。
接下来，参照图8对第二实施方式的润滑路径部件5组装于图5(a)所示的循环部件4而成的组装体进行说明。
如图8所示，润滑路径部件5的插入部5b插入到循环部件4的第三润滑槽4c中，插入部5b的端部到达循环部件4的上下的内周侧方向转换部4a之间的位置。此时，为了确保在润滑油供给时稳定地供给润滑油，优选使润滑路径部件5与循环部件4之间的接合部分以无间隙的方式紧贴，从而避免润滑路径部件5和循环部件4产生错动和晃动等。
需要说明的是，第一实施方式的润滑路径部件5组装于图5(a)所示的循环部件4而成的组装体与图8所示的组装体大致相同，同样是插入部5b的端部5b1到达循环部件4的上下的内周侧方向转换部4a之间的位置且润滑路径部件5与循环部件4之间的接合部分以无间隙的方式紧贴的状态。
接下来，参照图9(a)～图9(c)对端盖板3b、润滑路径部件5和循环部件4的组装状态进行说明。
图9(a)是将图8所示的润滑路径部件5和循环部件4的组装体组装于图4(a)所示的端盖板3b之前的状态的图。在将图8所示的润滑路径部件5和循环部件4的组装体向图4(a)所示的端盖板3b组装时，以润滑路径部件5的定位突起5e与端盖板3b的定位孔3b5对正的方式进行组装，由此能够容易地得到如图9(b)所示的端盖板3b、润滑路径部件5和循环部件4的组装体。
另外，如图9(c)和图4(b)所示，端盖板3b的定位孔3b5的中心与端盖板3b的润滑剂供给孔3b1的中心一致。
由此，在作为润滑剂而使用润滑油对直线导轨1进行润滑时，能够从润滑剂供给孔3b1直接向润滑路径部件5的与定位孔3b5嵌合的定位突起5e供给润滑油，从而润滑油能够容易地向方向转换路供给而实现良好的润滑。
需要说明的是，在润滑路径部件5由软质的材料构成的情况下，在将端盖板3b安装于滑块3a上时，能够按压端盖板3b使软质的润滑路径部件5变形而使循环部件4和润滑路径部件5紧密地贴合于端盖板3b，从而有效地防止润滑油泄露。
以上，通过图1～9所示的具体实施方式说明了本发明的直线导轨1的具体结构。
如以上的说明可知，为了实现提供一种能够容易地应对润滑脂润滑和润滑油润滑这双方而实现良好的润滑的直线导轨1的发明目的，本发明提供一种直线导轨1，具备沿长度方向在左右两侧面形成有滚珠滚动槽2a的轨道2和经由多个滚珠B而以能够相对移动的方式组装于轨道2上的移动块3，移动块3具有：滑块3a，其设置有与滚珠滚动槽2a对置而形成供滚珠B滚动的负荷滚动路的负荷滚珠滚动槽3a1和与负荷滚动路平行地形成且供滚珠B滚动的无负荷通路3a2；端盖板3b，其固定于滑块3a的前后的两端面上；循环部件4，其设置在滑块3a与端盖板3b之间，在直线导轨1中设置有用于将负荷滚动路和无负荷通路3a2连接而使滚珠B进行方向转换的方向转换路，端盖板3b设置有方向转换路的外周侧方向转换部3b2，循环部件4设置有方向转换路的内周侧方向转换部4a，循环部件4具有将位于轨道2的左右两侧的内周侧方向转换部4a连结的连结部4b，端盖板3b具有收容连结部4b的嵌合凹部3b3，并且在嵌合凹部3b3形成有第一润滑槽3b4，在作为润滑剂而使用润滑脂的情况下，利用由第一润滑槽3b4和循环部件4构成的润滑脂润滑路径来供给润滑剂，该直线导轨1的特征在于，直线导轨1还具有润滑路径部件5，润滑路径部件5形成有截面积比第一润滑槽3b4小的第二润滑槽5c，润滑路径部件5具备与第一润滑槽3b4嵌合的嵌合部5a和向循环部件4插入的插入部5b，在作为润滑剂而使用润滑油的情况下，通过将插入部5b插入到循环部件4且使嵌合部5a嵌合于第一润滑槽3b4，由此利用由第一润滑槽3b4和第二润滑槽5c构成的润滑油润滑路径来供给润滑剂。
根据本发明的直线导轨1，在利用润滑脂进行润滑时能够使润滑路径较宽，另一方面，在利用润滑油进行润滑时能够使润滑路径较窄，从而能够容易地实现良好的润滑。
另外，根据本发明的直线导轨1，通过将润滑路径部件5的插入部5b插 入循环部件4，由此能够使润滑油容易地到达构成方向转换路的内周侧方向转换部4a和外周侧方向转换部3b2，从而能够容易地实现良好的润滑。
优选，循环部件4形成有与第一润滑槽3b4或第二润滑槽5c连结的第三润滑槽4c，在插入部5b向循环部件4插入时，插入部5b插入到第三润滑槽4c。
由此，在供给润滑剂时，能够使润滑剂可靠地到达循环部件4中的上侧的内周侧方向转换部4a和下侧的内周侧方向转换部4a而对滚珠B进行润滑。
优选，在沿轨道2的长度方向观察时，插入部5b的厚度形成得小于嵌合部5a的厚度。
由此，能够将润滑路径部件5的插入部5b容易地插入到循环部件4的第三润滑槽4c。
优选，第一润滑槽3b4的与外周侧方向转换部3b2连结的端部3b41形成为锥形状，嵌合部5a的与插入部5b连结的端部5a1形成为与所述锥形状对应的锥形状。
通过将端盖板3b的第一润滑槽3b4的与外周侧方向转换部3b2连结的端部3b41形成为锥形状，在利用润滑脂润滑而使润滑脂向方向转换路流动时，能够提高润滑脂的压力，从而实现更加良好的润滑。
优选，润滑路径部件5形成有用于定位于端盖板3b的定位突起5e，端盖板3b形成有用于嵌入定位突起5e的定位孔3b5。
通过设置如上所述的定位突起5e和定位孔3b5，在将润滑路径部件5向端盖板3b嵌合插入时，能够容易地实现润滑路径部件5和端盖板3b的定位。
优选，定位孔3b5的中心与设置于端盖板3b的润滑剂供给孔3b1的中心一致。
由此，在作为润滑剂而使用润滑油对直线导轨1进行润滑时，能够从润滑剂供给孔3b1直接向润滑路径部件5的与定位孔3b5嵌合的定位突起5e供给润滑油，从而润滑油能够容易地向方向转换路供给而实现良好的润滑。
优选，第二润滑槽5c的一部分形成于定位突起5e。
由此，在将定位突起5e向端盖板3b的定位孔3b5插入时，能够容易地使定位突起5e变形而将该定位突起5e插入定位孔3b5。
优选，在第二润滑槽5c的两侧形成有用于防止润滑油泄露的肋5d。
由此，在利用润滑油进行润滑时，能够防止润滑油的泄露。
另外，本发明提供一种润滑路径部件，其是上述的任意一种实施方式的直线导轨1中的润滑路径部件5。
通过在直线导轨中使用如上所述的润滑路径部件5，该直线导轨能够获得上述的各技术效果。
需要说明的是，为了防止润滑油泄露而提高密封性能，可以在将润滑路径部件5安装于循环部件4后使用粘接剂等填充于循环部件4的第三润滑槽4c中。
如上所述，本发明参照附图对优选的实施方式进行了充分记载，但对于本领域技术人员来说能够了解各种变形或变更，这些变形或变更只要没有脱离本发明的技术方案限定的范围，均应被涵盖于其中。

Claims (9)

  1. 一种运动引导装置，具备沿长度方向在左右两侧面形成有滚动体滚动槽的支承体和经由多个滚动体而以能够相对移动的方式组装于所述支承体上的移动体，
    所述移动体具有：移动体主体，其设置有与所述滚动体滚动槽对置而形成供所述滚动体滚动的负荷滚动路的负荷滚动体滚动槽和与所述负荷滚动路平行地形成且供所述滚动体滚动的无负荷通路；盖体，其固定于所述移动体主体的前后的两端面上；循环部件，其设置在所述移动体主体与所述盖体之间，在所述运动引导装置中设置有用于将所述负荷滚动路和所述无负荷通路连接而使所述滚动体进行方向转换的方向转换路，所述盖体设置有所述方向转换路的外周侧方向转换部，所述循环部件设置有所述方向转换路的内周侧方向转换部，
    所述循环部件具有将位于所述支承体的左右两侧的所述内周侧方向转换部连结的连结部，所述盖体具有收容所述连结部的嵌合凹部，并且在所述嵌合凹部形成有第一润滑槽，
    在作为润滑剂而使用润滑脂的情况下，利用由所述第一润滑槽和所述循环部件构成的润滑脂润滑路径来供给润滑剂，
    所述运动引导装置的特征在于，
    所述运动引导装置还具有润滑路径部件，所述润滑路径部件形成有截面积比所述第一润滑槽小的第二润滑槽，
    所述润滑路径部件具备与所述第一润滑槽嵌合的嵌合部和向所述循环部件插入的插入部，
    在作为润滑剂而使用润滑油的情况下，通过将所述插入部插入到所述循环部件且使所述嵌合部嵌合于所述第一润滑槽，由此利用由所述第一润滑槽和所述第二润滑槽构成的润滑油润滑路径来供给润滑剂。
  2. 根据权利要求1所述的运动引导装置，其特征在于，
    所述循环部件形成有与所述第一润滑槽或所述第二润滑槽连结的第三润滑槽，在所述插入部向所述循环部件插入时，所述插入部插入到所述第三润滑槽。
  3. 根据权利要求1所述的运动引导装置，其特征在于，
    在沿所述长度方向观察时，所述插入部的厚度形成得小于所述嵌合部的厚度。
  4. 根据权利要求3所述的运动引导装置，其特征在于，
    所述第一润滑槽的与所述外周侧方向转换部连结的端部形成为锥形状，所述嵌合部的与所述插入部连结的端部形成为与所述锥形状对应的锥形状。
  5. 根据权利要求4所述的运动引导装置，其特征在于，
    所述润滑路径部件形成有用于定位于所述盖体的定位突起，所述盖体形成有用于嵌入所述定位突起的定位孔。
  6. 根据权利要求5所述的运动引导装置，其特征在于，
    所述定位孔的中心与设置于所述盖体的润滑剂供给孔的中心一致。
  7. 根据权利要求5或6所述的运动引导装置，其特征在于，
    所述第二润滑槽的一部分形成于所述定位突起。
  8. 根据权利要求1所述的运动引导装置，其特征在于，
    在所述第二润滑槽的两侧形成有用于防止所述润滑油泄露的肋。
  9. 一种润滑路径部件，其是权利要求1～8中任意一项所述的运动引导装置中的所述润滑路径部件。
PCT/CN2020/089004 2019-07-15 2020-05-07 运动引导装置以及在运动引导装置中使用的润滑路径部件 WO2021008199A1 (zh)

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DE112020003404.6T DE112020003404T5 (de) 2019-07-15 2020-05-07 Bewegungsführungsvorrichtung und Schmierpfadkomponente zur Verwendung in einer Bewegungsführungsvorrichtung
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JP2022502491A JP2022541209A (ja) 2019-07-15 2020-05-07 運動案内装置および該運動案内装置において使用される潤滑経路部品
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