WO2014178316A1 - 転がり案内装置 - Google Patents

転がり案内装置 Download PDF

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Publication number
WO2014178316A1
WO2014178316A1 PCT/JP2014/061442 JP2014061442W WO2014178316A1 WO 2014178316 A1 WO2014178316 A1 WO 2014178316A1 JP 2014061442 W JP2014061442 W JP 2014061442W WO 2014178316 A1 WO2014178316 A1 WO 2014178316A1
Authority
WO
WIPO (PCT)
Prior art keywords
path
circulation
rolling
lubricant
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/061442
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
光真 和田
健太郎 彦本
真理恵 堀川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THK Co Ltd
Original Assignee
THK Co Ltd
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 Co Ltd filed Critical THK Co Ltd
Priority to DE112014002249.7T priority Critical patent/DE112014002249B4/de
Priority to CN201480022257.5A priority patent/CN105121874B/zh
Publication of WO2014178316A1 publication Critical patent/WO2014178316A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry 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
    • F16C29/0633—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
    • F16C29/065—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 rollers
    • 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
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles

Definitions

  • the present invention relates to a rolling guide device that reciprocally guides a movable body such as a table in a work table of a machine tool or a linear guide portion or a curved guide portion of various conveying devices.
  • this type of rolling guide device is assembled to the raceway member via a raceway member in which a rolling surface of the rolling element is formed along the longitudinal direction and a large number of rolling elements rolling on the rolling surface. And a moving member that can reciprocate along the track member.
  • the moving member is provided with an infinite circulation path of rolling elements, whereby the moving member can move along the track member without being restricted in stroke.
  • the moving member covers a metal main body member, a plurality of circulation path assemblies attached to the main body member, and the circulation path assemblies. And a pair of lid members attached to the main body member.
  • the main body member is formed with a load rolling surface facing the rolling surface of the track member, and the rolling elements roll in a load passage defined by the rolling surface and the load rolling surface facing each other.
  • Each circulation path assembly to be mounted on the main body member is provided with a pipe portion inserted into a through hole formed in the main body member, and provided at one end of the pipe portion and on an end surface in the moving direction of the main body member. And a direction changing portion to be arranged.
  • the pipe portion is formed with a return passage of a rolling element parallel to the load passage, while the direction changing portion incorporates an inner direction change passage connecting the return passage and the load passage.
  • an outer circumferential guide surface of an outer direction change path that intersects the inner direction change path is formed on the outer surface of the direction change portion, and the circulation path assembly is mounted by attaching the lid member to the main body member. When covered, an outer direction changing path is formed between the direction changing portion and the lid member.
  • the infinite circulation path of the rolling element is configured by combining a pair of circulation path assemblies having the same shape, and the pair of circulation path assemblies are mounted facing each other with respect to the main body member.
  • the pipe portion of each circulation path assembly is inserted into a separate through hole formed in the main body member, and the tip of the pipe portion protrudes through the main body member to change the direction of the opposite circulation path assembly. It is connected with an outside direction change path in a part. That is, the combination of the pair of circulation path assemblies forms an infinite circulation path that makes a round in the order of the load path, the inner direction change path, the return path, the outer direction change path, and the load path.
  • Two circuit infinite circulation paths are constructed by crossing the direction change path and the outer direction change path.
  • a pair of circulation path assemblies mounted to face each other is set as one set, and one set of circulation path assemblies is provided on both side surfaces of the track member.
  • four circuit infinite circulation paths are constructed by the whole rolling guide apparatus by four circulation path assemblies having the same shape.
  • a set of circulation path assemblies provided on one side surface of the track member and a set of circulation path assemblies provided on the other side surface are provided in directions different from each other by 180 °.
  • this rolling guide device is provided with a lubricant path for supplying the lubricant to each infinite circulation path.
  • the lubricant path is provided so as to guide the lubricant from an oil injection hole formed in the lid member to each direction changing path provided in each circulation path assembly, and the direction changing portion of the circulation path assembly. Is provided with an oil inlet corresponding to the intersection of the inner direction change path and the outer direction change path. The lubricant flows into the inner direction change path and the outer direction change path through the oil inlet.
  • the lid member is provided with an introduction path through which the lubricant flows between the oil injection hole and the oil inlet of the circulation path assembly.
  • the introduction path is provided three-dimensionally with respect to the lid member, When the circulation path assembly is combined, it is provided along the joint surface between the two.
  • the lubricant for example, a lubricant composed of a base oil and an additive, or grease having a structural viscosity with a thickener with respect to the base oil is usually used.
  • a lubricant introduction path formed on the lid member is three-dimensionally provided on the lid member.
  • the lubricant passes through a plurality of bent portions. It reaches the oil inlet of the circuit assembly.
  • a grease containing a thickener is used as a lubricant, there is a possibility that the grease that has deteriorated with time may stay at the bent portion of the introduction path.
  • smooth flow of the lubricant in the lubricant path is hindered and proper lubrication of the infinite circulation path is hindered.
  • the present invention has been made in view of such problems.
  • the object of the present invention is to achieve simplification of the lubricant path while using a circulation path assembly having the same shape, and thus the lubricant path. It is an object of the present invention to provide a rolling guide device capable of preventing the lubricant from staying in the cylinder.
  • the rolling guide device to which the present invention is applied straddles the track member through a raceway member in which the rolling surfaces of the rolling elements along the longitudinal direction are formed on both sides and a large number of rolling elements infinitely circulating.
  • a movable member that is movable along the longitudinal direction of the track member, and the movable member constitutes a load passage of the rolling element facing the rolling surface of the track member.
  • a pair of circulation members provided on each end face in the movement direction of the main body member, a pair of recesses in which the respective circulation members are assembled, and a lubricant flow in are fixed to both end faces in the movement direction of the main body member.
  • the lubricant path includes an introduction path that is formed in the lid member and connects the supply hole and each recess, and first and second connection paths that are formed in the circulation member.
  • the pair of circulation members are attached to each of the pair of recesses included in each lid member in directions different from each other by 180 °, and one circulation member connects the first connection path and the introduction path of the lid member. In the other circulation member, the second connection path and the introduction path are connected.
  • the lubricant path can be formed in a plane parallel to the end surface in the movement direction of the main body member while using the circulation path assembly having the same shape. Simplification can be achieved.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 4 shows the circulation path assembly of the rolling guide apparatus which concerns on embodiment.
  • FIG. 1 and 2 show an example of an embodiment of a rolling guide device to which the present invention is applied.
  • This rolling guide device is assembled to the track member 2 through a plurality of rollers 1 and a track member 2 formed with a rolling surface 20 of the roller 1 as a rolling element along the longitudinal direction. It is comprised from the moving member 3 which incorporated the infinite circulation path.
  • the roller 1 rolls on the rolling surface 20 of the track member 2 while circulating in the endless circulation path, so that the moving member 3 can freely move along the longitudinal direction of the track member 2. It has become.
  • the rolling guide device of the present invention can use a ball as the rolling element.
  • the track member 2 is formed in a substantially rectangular cross section, and concave grooves are formed on both side surfaces thereof. Rolling surfaces 20 of the roller 1 are formed above and below each concave groove, and four rolling surfaces 20 are formed in the entire race member 2. Each rolling surface 20 is inclined at an angle of 45 ° with respect to the bottom surface 21 of the raceway member 2, while the rolling surface 20 located above the concave groove faces obliquely downward at an angle of 45 °, The rolling surface 20 located on the lower side faces obliquely upward at an angle of 45 °.
  • the track member 2 has fixing bolt mounting holes 22 formed at predetermined intervals along the longitudinal direction, and is used when the track member 2 is laid on a mechanical device or the like. In addition, the arrangement of the rolling surface 20 with respect to the track member 2, the inclination angle, and the number of the strips may be appropriately changed according to the load capacity required for the moving member 3.
  • the moving member 3 includes a main body member 4 having a guide groove that accommodates a part of the track member 2, a pair of lid members 5 attached to the front and rear of the moving direction of the main body member 4, and the main body member 4 and a circulation path assembly 6 covered from the outside by the lid member 5.
  • the details of the circulation path assembly 6 will be described later.
  • the main body member 4 includes a horizontal portion 4a on which a mounting surface 41 such as a mechanical device is formed, and a pair of leg portions 4b orthogonal to the horizontal portion 4a, and straddles the track member 2 therebetween. Arranged.
  • the mounting surface 41 is formed on the horizontal portion 4a, while an upper load rolling surface 42a and a lower load rolling surface 42b on which the roller 1 rolls are formed inside each leg portion 4b. .
  • the rolling surface 20 of the track member 2 and each load rolling surface 42a, 42b of the main body member 4 are opposed to each other, and the roller 1 rolls while applying a load between the main body member 4 and the track member 2.
  • a passage 43 is formed.
  • each leg 4b a return passage 44 corresponding to each load rolling surface 42a, 42b is formed in parallel with the load passage 43, and the roller 1 released from the load after rolling through the load passage 43 is loaded. It rolls in the opposite direction to the inside of the passage 43.
  • Each leg portion 4b is formed with a lower through hole 45b corresponding to the upper load rolling surface 42a and an upper through hole 45a corresponding to the lower load rolling surface 42b, and these upper through holes 45a. Further, by inserting a part of the circulation path assembly 6 into the lower through hole 45b, a return passage 44 is provided for the main body member 4.
  • the circulation path assembly 6 constitutes a direction change path 60 that connects the load path 43 and the return path 44 together with the lid member 5.
  • An endless circulation path of the roller 1 is constructed inside the moving member 3 by connecting a pair of direction change paths 60 to both ends of each load path 43 described above and both ends of the return path 44 corresponding thereto.
  • each load passage 43 is connected to a return passage 44 located obliquely downward or obliquely upward by the direction changing passage 60, and is constructed in each leg portion 4 b of the main body member 4.
  • the direction change paths 60 intersect each other.
  • the rollers 1 are arranged in a line on a flexible connecting belt 10 at equal intervals, and are incorporated in the endless circulation path together with the connecting belt 10.
  • the connecting body belt 10 is formed by injection molding of synthetic resin, and includes a plurality of spacers 11 interposed between the roller 1 and the roller 1 and a belt portion 12 that connects these spacers 11 in a row. Has been.
  • the roller 1 may be inserted into the endless circulation path without being arranged on the connecting belt 10.
  • FIG. 4 and 5 are perspective views showing the circulation path assembly 6.
  • FIG. The circulation path assembly 6 is inserted into the through-hole 45a or 45b of the main body member 4 and the pipe passage portion 7 in which the return passage 44 is formed, and the direction changing portion 8 for constructing the direction changing passage 60.
  • the pipe passage portion 7 and the direction changing portion 8 are integrated by synthetic resin injection molding.
  • the total length of the pipe passage portion 7 is slightly longer than the lengths of the through holes 45 a and 45 b formed in the main body member 4.
  • the pipe passage portion 7 and the direction changing portion 8 are not necessarily integrated, and may be formed separately and then assembled when mounted on the main body member 4.
  • the direction changing portion 8 has an inner direction changing path 60-1 curved in a substantially U shape therein, and the inner direction changing path 60-1 is a return passage 44 formed in the pipe passage portion 7. Is continuous. That is, the said direction change part 8 is equivalent to the circulation member of this invention.
  • an inner peripheral side guide surface 60 a of the outer direction changing path 60-2 is formed in an arch shape on the outer side surface of the direction changing portion 8.
  • the outer direction change path 60-2 is provided so as to guide the roller 1 in a direction intersecting the inner direction change path 60-1, and the inner peripheral guide surface 60a straddles the inner direction change path 60-1. Further, it intersects with the inner direction change path 60-1.
  • an abutting surface 64 is formed on the inner side surface of the direction changing portion 8 that abuts on the main body member 4 so that the tip surface of the pipe passage portion 7 of the other circulation path assembly 6 abuts.
  • One end of the inner peripheral guide surface 60 a is open to the abutting surface 64.
  • Positioning protrusions 65 and 66 are formed on the inner side surface of the direction changing portion 8. These positioning projections 65 and 66 are used when the circulation path assembly 6 is fixed to the main body member 4.
  • FIG. 6 is an exploded perspective view of the circulation path assembly 6.
  • the circulation path assembly 6 is divided into a first circulation half 6A and a second circulation half 6B, and the division plane includes the return passage 44 and the center line of the inner direction change passage 60-1.
  • the first circulation half 6A and the second circulation half 6B are formed with rolling element guide grooves 62 that serve as the return passage 44 and the inner direction change path 60-1, respectively.
  • 62 continues from the pipe passage portion 7 to the direction change portion 8 as a single groove.
  • a guide groove 63 for receiving the belt portion 12 of the belt coupling body 10 is formed at the bottom of the rolling element guide groove 62.
  • a hole 67 is formed in the first circulation half 6A having such a configuration, and a protrusion 68 is formed in the second circulation half 6B.
  • the first circulation half 6A is formed.
  • the second circulating half 6B is accurately combined with the body 6A. As a result, the circulation path assembly 6 including the return path 44 and the inner direction change path 60-1 is completed.
  • FIG. 7 is a perspective view showing a state where the circulation path assembly 6 is mounted on the leg portion 4b of the main body member 4, and the pipe passage portion 7 of the circulation path assembly 6 is connected to the upper through hole 45a of the leg portion 4b.
  • the inserted state is shown.
  • the pipe passage portion 7 is formed to be slightly longer than the length of the main body member 4 in the moving direction (longitudinal direction of the track member), and the pipe passage portion 7 until the direction changing portion 8 contacts the leg portion 4b. 7 is inserted into the through-hole 45a, the tip of the pipe passage portion 7 slightly protrudes from the surface on the opposite side of the leg portion 4b, although not depicted in FIG.
  • the inner turning path 60-1 of the turning section 8 is connected to the lower load rolling surface 42b formed in the main body member 4, and the outer turning path formed in the turning section 8 is changed.
  • An inner peripheral side guide surface 60a of the path 60-2 is connected to the upper load rolling surface 42a of the main body member 4.
  • FIG. 7 shows one end face of the leg portion 4b to which the circulation path assembly is mounted, but the other end face is similarly applied to the end face on the opposite side of the leg portion 4b. The assembly 6 is mounted.
  • FIG. 8 and FIG. 9 are schematic views simply showing how the pair of circulation path assemblies 6-1 and 6-2 are attached to the leg portion 4b from the front and rear in the moving direction of the main body member 4.
  • FIG. is there.
  • the pipe passage portions 7 of the pair of circulation path assemblies 6-1 and 6-2 from different directions. Is inserted.
  • the circulation path assembly 6-1 inserted into the upper through hole 45a and the circulation path assembly 6-2 inserted into the lower through hole 45b are members of the same shape, but are inserted into the leg portion 4b.
  • the circulation path assembly 6-2 is turned upside down with respect to the circulation path assembly 6-1.
  • FIG. 9 is a schematic view showing a state in which the pair of circulation path assemblies 6-1 and 6-2 are completely attached to the leg portion 4b.
  • the tips of the pipe passage portions 7 of the circulation path assemblies 6-1 and 6-2 are connected to the upper through holes 45a or 45a. It slightly protrudes from the leg portion 4b through the lower through-hole 45b and abuts against the abutting surface 64 of the direction changing portion 8 located facing each other.
  • the pair of circulation path assemblies 6-1 and 6-2 are combined with the leg portion 4b interposed therebetween.
  • the main body member 4 includes a pair of legs 4b, four circulation path assemblies are attached to the main body member 4.
  • FIG. 10 is a perspective view showing a combined state of the circulation path assembly 6 and the lid member 5.
  • the lid member 5 is manufactured by injection molding of synthetic resin, has a mounting portion 5a corresponding to the horizontal portion 4a of the main body member 4, and a pair of leg portions 5b corresponding to the leg portions 4b of the main body member 4. , 5c.
  • the receiving grooves 52 and 53 for receiving the direction changing portions 8 of the circulation path assembly 6 are formed on the inner side surfaces of the leg portions 5b and 5c that come into contact with the main body member 4, respectively. That is, these housing grooves 52 and 53 correspond to the concave portions of the present invention.
  • the receiving groove 52 formed in the leg portion 5b is formed in a direction different from the receiving groove 53 formed in the leg portion 5c by 180 °. Accordingly, the pair of circulation path assemblies 6-1 and 6-2 are assembled to the lid member 5 in directions different from each other by 180 °.
  • an outer peripheral side guide surface 60b corresponding to the inner peripheral side guide surface 60a of each circulation path assembly 6 is formed on the inner side surfaces of the leg portions 5b and 5c, and the outer peripheral side guide surface 60b includes the receiving grooves 52, 53 and the leg portions 5b and 5c.
  • the outer peripheral guide surface 60b formed on the leg portion 5c is formed in a direction 180 ° different from the outer peripheral guide surface 60b formed on the leg portion 5b.
  • the outer direction change path 60-2 is formed.
  • the pipe passage portion 7 provided in the circulation path assembly 6-1 is inserted into the upper through hole 45a formed in the leg portion 4b of the main body member 4.
  • the tip of the pipe passage portion 7 of the other circulation path assembly 6-2 protruding from the lower through hole 45b formed in the leg 4b is connected to the circulation path assembly 6-1 from the direction of the arrow in the figure. It is adapted to be fitted to the abutment surface 64 provided on the surface.
  • the outer direction change path 60-2 is connected to the return path 44 of the other circulation path assembly 6-2.
  • the pipe passage portion 7 is inserted into the lower through hole 45b formed in the leg portion 4b of the main body member 4, and the abutment thereof.
  • the front end of the pipe passage portion 7 (not shown) of the other circulation path assembly 6-1 is fitted to the surface 64.
  • the moving member 3 is completed by combining the four circulation path assemblies 6 having the same shape and the two lid members 5 having the same shape with respect to the main body member 4 in this manner.
  • Two infinite circulation paths of the roller 1 are formed for each leg 4b. That is, the inner direction change path 60-1 and the outer direction change path 60-2 are respectively located at both ends of the upper load rolling surface 42a and the lower load rolling surface 42b of each leg 4b.
  • the path 60-1 and the outer direction change path 60-2 are connected by a return path 44 in the upper through hole 45a or the lower through hole 45b of the main body member 4.
  • the roller 1 is in the order of the load passage 43, the inner direction change path 60-1, the return path 44, the outer direction change path 60-2, and the load path 43.
  • the moving member 3 can freely move along the longitudinal direction of the track member 2.
  • the moving member 3 is provided with a lubricant path for supplying the lubricant into the infinite circulation path.
  • the lubricant path is composed of an introduction path formed in the lid member 5 and a transfer path and a connection path formed in the circulation path assembly 6.
  • a first connection path 91 is formed along the periphery of the abutting surface 64 on the inner surface of the direction changing portion 8 with which the main body member 4 abuts.
  • the first connection path 91 is formed in the second circulation half 6B (see FIG. 6).
  • the tip of the pipe passage portion 7 of the other circulation path assembly 6 is fitted to the abutting surface 64.
  • the first connection path 91 is formed in a groove shape.
  • a first discharge groove 92 as the transfer path is formed on the inner side surface of the direction changing portion 8 with which the main body member 4 abuts.
  • the first discharge groove 92 is formed in the first circulation half 6A, and one end is opened to the dividing surface with the second circulation half 6B, and the other end is opened to the inner circumferential guide surface 60a.
  • the first discharge groove 92 formed in this way is connected to the first connection path 91 by combining the first circulation half 6A and the second circulation half 6B.
  • a second discharge groove 93 as the transfer path connected to the inner direction change path 60-1 is formed on the inner side surface of the direction change section 8.
  • the second discharge groove 93 is formed in the second circulation half 6B, and the second circulation half 6B and the first circulation half 6A are combined to form the first connection path 91 and the first discharge groove. It is orthogonal to 92.
  • a guide hole 94 is formed through the first circulation half 6 ⁇ / b> A, and the guide hole 94 is formed at the base end of the pipe passage portion 7.
  • the guide hole 94 is formed in the same plane as the first discharge groove 92 and is formed so as not to interfere with the rolling element guide groove 62.
  • a guide groove 95 is formed in the second circulation half 6B, and the guide groove 95 is opened toward a dividing surface with the first circulation half 6A.
  • the guide groove 95 is formed in the same plane as the first connection path 91 and the second discharge groove 93, and is connected to the first connection path 91 and the second discharge groove 93.
  • the cross-sectional area of the guide groove 95 is formed to be the same as the cross-sectional area of the guide hole 94 formed in the first circulation half 6A.
  • the guide hole 94 formed in the first circulation half 6A and the guide groove 95 formed in the second circulation half 6B are combined with the first circulation half 6A and the second circulation half 6B. Connected by. As a result, a tunnel-like second connection path 96 is completed inside the circulation path assembly 6.
  • a supply hole 50 is formed in the attachment portion 5 a of the lid member 5, and the supply hole 50 is formed to penetrate along the moving direction of the moving member 3.
  • Lubricant flows into the supply hole 50 from a grease nipple or the like attached to the lid member 5.
  • Two introduction passages 51 a and 51 b branch from the supply hole 50 are formed on the inner surface of the attachment portion 5 a that contacts the main body member 4.
  • Each introduction path 51 is formed in a groove shape opened toward the end surface in the movement direction of the main body member 4.
  • the introduction path 51 a provided in the mounting portion 5 a is connected to the accommodation groove 52, and the introduction path 51 b is connected to the accommodation groove 53.
  • FIG. 11 is a front view of the combined state of the lid member 5 and the circulation path assembly 6 as observed from the main body member 4 side.
  • the pair of circulation path assemblies 6-1 and 6-2 are assembled to the lid member 5 in directions different from each other by 180 °.
  • the circulation path assembly 6-2 is assembled in the receiving groove 52 of the lid member 5 so that the first connection path 91 is connected to the introduction path 51a of the lid member 5.
  • a continuous lubricant path from the introduction path 51a of the lid member 5 to the first discharge groove 92 and the second discharge groove 93 of the circulation path assembly 6-2 is completed.
  • the lubricant path formed from the lid member 5 and the circulation path assembly 6-2 is referred to as a “first path”. At this time, one end of the second connection path 96 formed in the circulation path assembly 6-2 is closed by the receiving groove 52.
  • the circulation path assembly 6-1 is assembled to the receiving groove 53 of the lid member 5 so that the guide hole 94 of the second connection path 96 is connected to the introduction path 51b of the lid member 5.
  • a continuous lubricant path from the introduction path 51b of the lid member 5 to the first discharge groove 92 and the second discharge groove 93 of the circulation path assembly 6-1 is completed.
  • the lubricant path formed from the lid member 5 and the circulation path assembly 6-1 is referred to as a “second path”.
  • the lubricant When the lubricant is injected through the supply hole 50 of the lid member 5, the lubricant flows simultaneously into the introduction paths 51 a and 51 b provided in the lid member 5. Thereafter, in the first path, the lubricant flows through the first connection path 91, then passes through the first discharge groove 92 and the second discharge groove 93, and flows into the direction change paths 60-1 and 60-2. Will do. As described above, since each of the direction change paths 60-1 and 60-2 is connected to the load passage 43, the lubricant flowing in the first path is discharged into the load passage 43.
  • the lubricant that has flowed through the introduction path 51b of the lid member 5 passes through the second connection path 96, the first discharge groove 92, and the second discharge groove 93, and thereby each direction change path.
  • the ink is discharged into the load passage 43 connected to 60-1 and 60-2.
  • the first path and the second path are provided in a plane in contact with the main body member 4, that is, in a plane parallel to the end surface in the movement direction of the main body member 4. It has been.
  • the pair of circulation path assemblies 6 having the same shape are assembled to the lid member 5 in directions different from each other by 180 °, thereby being parallel to the moving direction end face of the main body member 4.
  • the lubricant path can be formed in a smooth plane, and the lubricant path can be simplified. Further, even when grease containing a thickener is used as the lubricant, it is possible to prevent the grease from staying in the lubricant path. As a result, it is possible to appropriately discharge the lubricant to each infinite circulation path, and thus it is possible to achieve smooth movement of the moving member 3 along the track member 2.
  • FIG. 12 is a schematic view showing the uneven state of the first path on the inner surface of the circulation path assembly 6-2 and the lid member 5.
  • FIG. 12 since the second connection path 96 is formed in a tunnel shape, the opening of the second connection path 96 connected to the discharge grooves 92 and 93 is used as an orifice. Works. Due to the function of the orifice, the flow resistance when the lubricant flowing in the first connection path 91 attempts to enter the second connection path 96 is increased. As a result, the lubricant that has flowed through the first connection path 91 is less likely to flow into the second connection path 96, but is more likely to flow into the discharge grooves 92 and 93 having a relatively low flow resistance. Yes.
  • the lubricant that has flowed in the second connection path 96 is less likely to flow to the first connection path 91 (hatching portion in the circulation path assembly 6-2 in FIG. 11).
  • a step 91 a is formed in the first connection path 91.
  • the step 91a protrudes toward the end surface of the main body member 4 in the moving direction, whereby the groove depth of the first connection path 91 formed in a groove shape is set to the discharge grooves 92 and 93 and the lid member 5. It is shallower than that of the introduction path 51a.
  • the cross-sectional area of the first connection path 91 is set smaller than the cross-sectional areas of the discharge grooves 92 and 93 and the introduction path 51a of the lid member 5. Further, the step portion 91 a is provided in the entire area of the first connection path 91.
  • FIG. 13 is a schematic diagram showing the uneven state of the second path on the inner surface of the circulation path assembly 6-1 and the lid member 5.
  • FIG. 13 in the second path, the first connection path is provided for the lubricant that has flowed in the direction of the arrow in FIG. A large flow resistance acts when trying to enter into 91.
  • the lubricant that has flowed through the second connection path 96 is less likely to flow into the first connection path 91 and is likely to flow into the discharge grooves 92 and 93.
  • the first path is configured in the first path by the configuration of the step portion 91a formed in the first connection path 91 and the tunnel-shaped second connection path 96. It is possible to prevent the lubricant from flowing into the second connection path 96 that is not used as one path.
  • the second path it is possible to prevent the lubricant from flowing into the first connection path 91 that is not used as the second path.
  • the second connection path 96 is formed in a tunnel shape.
  • the opening of the second connection path 96 connected to the introduction path 51b of the lid member 5 functions as an orifice for reducing the flow rate of the lubricant flowing in the introduction path 51b.
  • the flow rate of the lubricant in the second path and the flow rate of the lubricant in the first path are not uniform.
  • the pair of circulation path assemblies 6-1 and 6-2 are assembled to the lid member 5 in directions different from each other by 180 °.
  • the first connection path 91 hatchched portion
  • the first connection path 91 is formed with the step portion 91a, and the first connection path 91 is set to have a smaller cross-sectional area than the cross-sectional area of the introduction path 51 of the lid member 5.
  • the step 91a functions as an aperture.
  • the flow rate of the lubricant when flowing from the introduction path 51a into the first connection path 91 in the first path is adjusted.
  • the flow resistance by the step 91 a of the first connection path 91 and the flow resistance by the second connection path 96 are configured to be substantially the same. Therefore, as a result of injecting the lubricant from the supply hole 50 of the lid member 5, the lubricant flow rate in the first path and the lubricant flow rate in the second path can be made uniform.
  • the rolling guide device relates to a linear guide device in which the track member 2 is formed in a linear shape, but the present invention is applied to a curve guide device in which the track member 2 is formed in a curved shape. It is also possible.
  • the outer direction change path and the inner direction change path intersect each other, and two endless circulation paths are formed in each leg portion 4b of the main body member 4,
  • the present invention can be applied to other rolling guide devices. That is, for example, it is also possible to apply to a rolling guide device that has a single endless circulation path for each leg 4b and that does not cross the direction change path.
  • the transfer path is branched into the first discharge groove 92 and the second discharge groove 93, but the present invention is applied to a rolling guide device in which the direction change paths do not intersect. In this case, the transfer path need not be branched.
  • the direction changing path may be formed by combining the lid member and the circulation path assembly, and the entire direction changing path is formed in the circulation path assembly. There may be.
  • the step 91a formed in the first connection path 91 is provided in the entire area of the first connection path 91, and the step 91a is the first connection path. It does not matter if it is not formed over the entire area of 91.
  • the second connection path 96 when the second connection path 96 is connected to the introduction path 51 of the lid member 5 to form a lubricant path, the second connection path 96 functions so that the lubricant does not enter the first connection path 91, and the first connection When the path 91 is connected to the introduction path 51, it is assumed that the path 91 is configured to function as a throttle unit.
  • the second connection path 96 is formed in a tunnel shape, but the second connection path 96 may be formed in a groove shape like the first connection path 91. Absent.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
PCT/JP2014/061442 2013-05-01 2014-04-23 転がり案内装置 Ceased WO2014178316A1 (ja)

Priority Applications (2)

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DE112014002249.7T DE112014002249B4 (de) 2013-05-01 2014-04-23 Wälzführungsvorrichtung
CN201480022257.5A CN105121874B (zh) 2013-05-01 2014-04-23 滚动引导装置

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JP2013096565A JP5721769B2 (ja) 2013-05-01 2013-05-01 転がり案内装置
JP2013-096565 2013-05-01

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CN (1) CN105121874B (enExample)
DE (1) DE112014002249B4 (enExample)
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JP6436949B2 (ja) * 2016-09-02 2018-12-12 日本ベアリング株式会社 直動装置
JP6494692B2 (ja) * 2017-05-31 2019-04-03 Thk株式会社 運動案内装置
JP6895811B2 (ja) * 2017-06-02 2021-06-30 日本トムソン株式会社 直動案内ユニット
TWI674167B (zh) * 2018-11-28 2019-10-11 精浚科技股份有限公司 線性滑軌

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JP2006144840A (ja) * 2004-11-17 2006-06-08 Nippon Thompson Co Ltd 直動案内ユニット
JP2012241753A (ja) * 2011-05-17 2012-12-10 Nsk Ltd 直動案内装置

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CN100357619C (zh) * 2004-09-15 2007-12-26 上银科技股份有限公司 滚柱式线性滑轨
US7044641B2 (en) * 2004-10-05 2006-05-16 Hiwin Technologies Corp. Roller type linear guideway
JP2007146888A (ja) * 2005-11-24 2007-06-14 Nsk Ltd リニアガイド装置のスライダ
CN101865210B (zh) * 2005-12-26 2012-04-11 Thk株式会社 运动引导装置及其制造方法以及运动引导装置用附件
WO2012063411A1 (ja) * 2010-11-10 2012-05-18 日本精工株式会社 リニアガイド装置
JP2012229752A (ja) * 2011-04-26 2012-11-22 Nsk Ltd リニアガイド装置のスライダ

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JPH0348120U (enExample) * 1989-09-18 1991-05-08
JP2006105296A (ja) * 2004-10-06 2006-04-20 Shangyin Sci & Technol Co Ltd ローラ式リニアガイドウェイ
JP2006144840A (ja) * 2004-11-17 2006-06-08 Nippon Thompson Co Ltd 直動案内ユニット
JP2012241753A (ja) * 2011-05-17 2012-12-10 Nsk Ltd 直動案内装置

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DE112014002249T5 (de) 2016-01-21
JP5721769B2 (ja) 2015-05-20
DE112014002249B4 (de) 2023-01-19
CN105121874B (zh) 2017-09-12
TWI606193B (zh) 2017-11-21
CN105121874A (zh) 2015-12-02
JP2014219021A (ja) 2014-11-20
TW201512555A (zh) 2015-04-01

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