WO2013136929A1 - 転がり案内装置 - Google Patents
転がり案内装置 Download PDFInfo
- Publication number
- WO2013136929A1 WO2013136929A1 PCT/JP2013/054154 JP2013054154W WO2013136929A1 WO 2013136929 A1 WO2013136929 A1 WO 2013136929A1 JP 2013054154 W JP2013054154 W JP 2013054154W WO 2013136929 A1 WO2013136929 A1 WO 2013136929A1
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- WO
- WIPO (PCT)
- Prior art keywords
- rolling
- circulation
- path
- main body
- direction change
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16C29/0604—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section
- F16C29/0607—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section of parts or members for retaining the rolling elements, i.e. members to prevent the rolling elements from falling out of the bearing body or carriage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
- F16C29/0602—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- 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
- F16C29/0652—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 at least partly defined by separate parts, e.g. covers attached to the legs of the main body of the U-shaped carriage
- F16C29/0666—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 at least partly defined by separate parts, e.g. covers attached to the legs of the main body of the U-shaped carriage with rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
- F16C33/506—Cages for rollers or needles formed of interconnected members, e.g. chains formed as a flexible belt
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 lids 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 intersecting the inner direction change path is formed on the outer side surface of the direction changing portion, and the circulation path assembly is mounted by attaching the lid to the main body member. When covered, an outer direction changing path is formed between the direction changing portion and the lid.
- the infinite circulation path of the rolling element is composed of a combination of a pair of circulation path assemblies, 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, by combining the pair of circulation path assemblies, 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 is formed.
- Two circuit infinite circulation paths are constructed by crossing the inner direction change path and the outer direction change path.
- a scooping piece for separating the rolling elements rolling on the load passage away from the track members and guiding them to the inner direction change path is provided at the direction change portion of each circulation path assembly.
- the scooping piece for guiding the rolling elements that have been rolling along the load passage to the outer direction change path is not formed in the direction change path portion, and the outer guide surface of the outer direction change path is formed. It is provided on the lid.
- the circulation path assembly is divided into a first circulation half and a second circulation half along the center line of the inner direction change path and the return path.
- the scooping piece for guiding the rolling elements with respect to the direction change path is also bisected by the center line of the inner direction change path, and is formed in half in both the first circulation half and the second circulation half.
- the present invention has been made in view of such a problem, and an object of the present invention is to prevent the scooping piece provided in the direction changing portion from being deformed with use over time, and An object of the present invention is to provide a rolling guide device capable of improving the durability of a raising piece and thereby achieving smooth movement of a moving member relative to a track member.
- the present invention is a track member, a moving member that is assembled to the track member via a large number of rolling elements, and has a plurality of rolling element infinite circulation paths including an inner direction change path and an outer direction change path that intersect each other,
- the moving member includes a main body member having a load rolling surface and a return passage of the rolling element, and an inner periphery side guide of the outer direction change path while incorporating the inner direction change path.
- a direction changing pipe having a surface, and a lid that is attached to the main body member and has an outer peripheral side guide surface of the outer direction changing path.
- the said direction change pipe has the 1st circulation half and the 2nd circulation half divided in the plane containing the above-mentioned inside direction change way, and makes the rolling element which rolls the above-mentioned load passage into the above-mentioned inside direction change way
- the guiding scooping portion is not formed in the second circulation half, but is formed only in the first circulation half.
- the scooping portion for guiding the rolling element rolling in the load passage to the inner direction change path is formed only in the first circulation half without being formed in the second circulation half. Therefore, the seam of the first circulation half and the second circulation half does not exist in the center of the scooping portion. For this reason, it is possible to avoid the deformation of the scooping portion with use over time, improve the durability of the scooping portion, and thereby achieve smooth movement of the moving member relative to the track member. It becomes.
- 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. 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. 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 portions are formed on both side surfaces thereof.
- Rolling surfaces 20 of the roller 1 are formed above and below each recess, 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 track member 2, and the rolling surface 20 located above the recess faces obliquely downward at an angle of 45 °, while The rolling surface 20 located on the 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.
- 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 lids 5 that are mounted before and after the main body member 4 moves, 4 and a circulation path assembly 6 covered from the outside by the lid 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. Are arranged.
- the mounting surface 41 is formed on the horizontal portion 4a, and two load rolling surfaces 42 on which the roller 1 rolls are formed inside each leg portion 4b.
- the rolling surface 20 of the track member 2 and the load rolling surface 42 of the main body member 4 face each other, and a load passage 43 in which the roller 1 rolls while applying a load between the main body member 4 and the track member 2.
- Each leg 4b is formed with a return passage 44 corresponding to each load rolling surface 42 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.
- the return passage 44 is provided in the circulation path assembly 6, and a part of the circulation path assembly 6 is inserted into a through hole 45 formed in the body member 4, so On the other hand, a return passage 44 is provided.
- 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 5.
- An endless circulation path of the roller 1 is constructed inside the moving member 3 by connecting a pair of direction changing paths 60 to both ends of each load path 43 and the corresponding 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 is a view showing a state in which the lid 5 and the circulation path assembly 6 are removed from the moving member 3, and the main body member 4 is cut in half by the horizontal portion 4a, and only one leg portion 4b. Is shown.
- an upper load rolling surface 42 a and a lower load rolling surface 42 b are formed on the inner surface of the leg portion 4 b of the main body member 4.
- the leg 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.
- a part of the circulation path assembly 6 is inserted into the hole 45a and the lower through hole 45b so that the return passage 44 is constructed.
- a female screw hole 46 for fastening a fixing bolt that penetrates the lid body 5 is formed on the end surface of the main body member 4 to which the lid body 5 is mounted, and the position of the circulation path assembly 6
- a reference hole 47 is formed.
- the position reference hole 47 is located in a region surrounded by the upper load rolling surface 42a, the lower load rolling surface 42b, the upper through hole 45a, and the lower through hole 45b.
- a locking groove 48 having a V-shaped cross section is provided on the inner side surface of the leg portion 4b at an intermediate position between the upper load rolling surface 42a and the lower load rolling surface 42b. 2
- the central holding member 9 (see FIG. 2) for guiding the connector belt 10 is positioned with respect to the upper load rolling surface 42 a and the lower load rolling surface 42 b using the locking groove 48. It has become.
- FIG. 5 and 6 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 return path pipe 7 in which the return path 44 is formed, and the direction change pipe 8 for constructing the direction change path 60.
- the return passage pipe 7 and the direction changing pipe 8 are integrated by synthetic resin injection molding.
- the entire length of the return passage pipe 7 is slightly longer than the lengths of the through holes 45 a and 45 b formed in the main body member 4.
- the return passage pipe 7 and the direction changing pipe 8 do not necessarily have to be integrated, and may be assembled separately when they are mounted on the body member 4 after being formed separately.
- the direction changing pipe 8 incorporates therein an inner direction changing path 60-1 curved in a substantially U shape, and the inner direction changing path 60-1 is formed in the return path 44 formed in the return path pipe 7. Is continuous. Further, as shown in FIG. 5, an inner peripheral guide surface 60 a of the outer direction change path 60-2 is formed in an arch shape on the outer side surface of the direction changing pipe 8. The outer direction change path 60-2 is provided so as to guide the roller 1 in a direction intersecting with the inner direction change path 60-1, and the inner peripheral guide surface 60a is formed on the outer wall portion of the direction change pipe 8. It crosses the inner direction change path 60-1 so as to straddle it. Further, as shown in FIG.
- an abutting recess 64 is formed on the inner side surface of the direction change pipe 8 so that the front end surface of the return path pipe 7 of the other circulation path assembly 6 abuts.
- One end of the circumferential guide surface 60 a is open to the abutting recess 64.
- the circulation path assembly 6 is provided with positioning protrusions 66.
- the positioning protrusion 66 is fitted into the position reference hole 47 (see FIG. 4) formed in the leg portion 4b of the main body member 4.
- the means for positioning the circulation path assembly 6 on the main body member 4 is limited to the combination of the position reference hole 47 provided on the main body member 4 and the positioning projection 66 provided on the circulation path assembly 6. Instead, it is sufficient that a locking structure serving as a position reference is provided between the main body member 4 and the circulation path assembly 6. For example, a protrusion provided on the circulation path assembly 6 can be pressed against a locking groove 48 having a V-shaped cross section formed on the leg portion 4 b of the main body member 4.
- FIG. 7 is an exploded perspective view of the circuit assembly.
- 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 path 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 return passage pipe 7 to the direction change pipe 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.
- the inner peripheral side guide surface 60a of the outer direction change path 60-2 formed in an arch shape with respect to the outer side surface of the direction changing pipe 8 crosses the inner peripheral side guide surface 60a in the middle. It is divided into a first circulation half 6A and a second circulation half 6B.
- Each of the first circulation half 6A and the second circulation half 6B is formed with a projection 64 and a hole 65 that are fitted to each other.
- the second circulation half 6B is accurately combined to complete the circulation path assembly 6 including the return path 44 and the inner direction change path 60-1.
- the positioning projection 66 provided on the circulation path assembly 6 is provided on the first circulation half 6 ⁇ / b> A constituting the circulation path assembly 6, and the positioning of the circulation path assembly 6 with respect to the main body member 4. Is configured such that only the first circulation half 6A is accurately positioned with respect to the main body member 4 and the second circulation half 6B is assembled to the first circulation half 6A positioned with respect to the main body member 4. Has been.
- a scooping-up portion 67 for introducing the roller 1 rolling on the rolling surface 20 of the track member into the inner direction changing path 60-1 is provided near the entrance of the inner direction changing path 60-1. Yes.
- the scooping portion 67 is provided in the first circulation half 6A, and the edge of the scooping portion 67 facing the inlet of the inner direction change path 60-1 protrudes in a wedge shape so as to contact the roller.
- a contact edge 67a is formed.
- the second circulation half is provided with a recess 68 into which the scooping portion 67 is fitted, and the recess 68 is provided with a cylindrical reinforcing projection 68a.
- the reinforcing protrusion 68a is orthogonal to the rolling direction of the roller 1 with respect to the fitting hole 67b provided in the scooping portion 67 when the first circulation half and the second circulation half are combined. It is inserted from the direction to do.
- FIG. 8 is a schematic view showing the vicinity of the scooping portion 67 before the first circulation half 6A and the second circulation half 6B are combined.
- the scooping portion 67 protrudes from the bottom surface of the rolling element guide groove 62 of the first circulation half 6A by an amount corresponding to the axial length of the roller 1, and is cantilevered with respect to the first circulation half 6A. It is provided like a beam.
- the reinforcing projection 68a stands up toward the scooping portion 67 in the recess 68 of the second circulation half 6B to which the scooping portion 67 is fitted.
- a guide groove 63 for accommodating the belt portion 12 of the connecting body belt 10 is present on the bottom surface of the rolling element guide groove 62 formed in the first circulation half 6A and the second circulation half 6B.
- FIG. 9 shows the vicinity of the scooping portion 67 in a state where the first circulation half 6A and the second circulation half 6B are combined.
- the roller 1 and the connecting belt 10 are accommodated in an inner direction change path 60-1 formed by connecting the first circulation half 6A and the second circulation half 6B.
- the reinforcing protrusion 68a is inserted into the fitting hole 67b of the scooping portion 67, and the scooping portion 67 is It is surely fixed to the recess 68 of the two-circulation half body without causing displacement.
- the reinforcing protrusion 68a is formed in a cylindrical shape protruding from the second circulation half 6B.
- the displacement of the scooping portion 67 with respect to the recess 68 can be prevented.
- Any other shape can be used.
- a wall-shaped reinforcing protrusion 68 b is provided along the outer edge of the recess 68, and the reinforcing protrusion 68 b is fitted to a stepped portion 67 c provided along the outer edge of the scooping portion 67. You may comprise so that it may do.
- FIG. 11 is a perspective view showing a state in which the circulation path assembly 6 is attached to the leg portion 4b of the main body member 4, and the return passage pipe 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 positioning protrusion 66 provided on the circulation path assembly 6 is fitted in the position reference hole 47 of the main body member 4.
- the return passage pipe 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 return passage until the direction changing pipe 8 contacts the leg portion 4b.
- FIG. 11 shows one end face of the leg portion 4b to which the circulation path assembly is mounted. The end face on the opposite side of the leg portion 4b is in relation to the lower through hole 45b of the leg portion. Then, the return passage pipe 7 of the circulation path assembly 6 is inserted. Accordingly, a pair of circulation path assemblies 6 are combined with the leg portion 4b interposed therebetween, and the main body member 4 includes a pair of leg portions. The circulation path assembly 6 is mounted.
- FIG. 12 is a perspective view showing a lid 5 that covers the direction change pipe 8 of the circulation path assembly 6 and is attached to the main body member 4.
- the lid 5 is observed from the main body member 4 side. It is.
- the lid body 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.
- Receiving grooves 50 and 51 for receiving the direction change pipes 8 of the circulation path assembly 6 are formed on the inner side surfaces of the leg portions 5b and 5c which are in contact with the main body member 4, respectively.
- the accommodation groove 50 formed in the leg portion 5b corresponds to the circulation path assembly 6 attached to the main body member 4 in FIG.
- the receiving groove 51 formed in the leg 5c is formed in a direction different from the receiving groove 50 formed in the leg 5b by 180 °, and is opposite to the leg 4b of the main body member 4 in FIG. This corresponds to the circulation path assembly 6 mounted from the side (the back side of the drawing).
- outer peripheral side guide surfaces 60b and 60c corresponding to the inner peripheral side guide surface 60a of the circulation path assembly 6 are formed in a concave curved surface on the inner side surfaces of the leg portions 5b and 5c, and the outer peripheral side guide The surfaces 60b and 60c are provided so as to intersect the receiving grooves 50 and 51 at the leg portions 5b and 5c.
- the outer peripheral guide surface 60c formed on the leg portion 5c is formed in a direction different from the outer peripheral guide surface 60b formed on the leg portion 5b by 180 °.
- a scooping portion for guiding the roller that has rolled on the rolling surface 20 of the track member 2 to the outer direction change path 60-2. 56 is provided.
- the leg portions 5b and 5c of the lid 5 are respectively formed with positioning recesses 52 with which the front end surfaces of the return passage pipes 7 of the circulation path assembly 6 abut, and one ends of the outer peripheral guide surfaces 60b and 60c. Are open to these positioning recesses 52.
- step portions 53 are formed on both sides of the outer peripheral guide surfaces 60b and 60c along the longitudinal direction of the outer peripheral guide surfaces 60b and 60c.
- the step portion 53 constitutes a guide groove that accommodates the belt portion 12 of the connector belt 10.
- reference numeral 54 in FIG. 12 denotes a through hole of a fixing bolt for fastening the lid 5 to the main body member 4.
- FIG. 13 is a perspective view showing a combined state of the circulation path assembly 6 and the lid, and the direction changing pipe 8 of the circulation path assembly 6 is accommodated in one accommodation groove 50 of the lid 5. Indicates the state.
- the direction changing pipe 8 is received in the receiving groove 50 of the lid body 5 in this way, the outer circumferential side guide surface 60b of the lid body 5 and the inner circumferential side guide surface 60a of the direction changing pipe 8 face each other, and The outer direction change path 60-2 is completed.
- the return passage pipe 7 provided in the circulation path assembly 6 is inserted into the upper through hole 45 a formed in the leg portion 4 b of the main body member 4.
- the abutting concave portion 64 formed in the direction changing pipe 8 and the positioning concave portion 52 formed in the lid body 5 are combined.
- a circular pipe receiving hole 55 is formed.
- the tip of the return passage pipe 7 of the other circulation path assembly 6 protruding from the lower through hole 45 formed in the leg portion 4b of the main body member 4 is in the direction of the arrow in the figure. It comes to fit from.
- the outer direction change path 60-2 is connected to the return path 44 of the other circulation path assembly 6.
- the direction change pipe 8 of the circulation path assembly 6 is accommodated in the other accommodation groove 51 of the lid 5, and the circulation path assembly 6 accommodated in the accommodation groove 51 is accommodated as described above.
- the upper and lower sides of the circulation path assembly 6 accommodated in the groove 50 are upside down.
- the pair of lids 5 attached to the main body member 4 from both sides in the moving direction are obtained by arranging the lids shown in FIG. 12 so as to face each other, and have the same shape.
- the moving member 3 is completed by combining the four circulation path assemblies 6 having the same shape and the two lid bodies 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.
- roller 1 that rolls on the rolling surface 20 of the track member 2 is provided in the circulation path assembly 6 by a scooping portion 67 that is located at the entrance of the inner direction changing path 60-1. Guided to the inside of the outer direction change path 60-2 by the scooping portion 56 provided in the lid 5 and positioned at the entrance of the outer direction change path 60-2. Will circulate in the endless circuit.
- the roller 1 When the roller 1 that has been rolling on the rolling surface 20 of the raceway member 2 enters the inner direction change path 60-1, the roller 1 has a scooping portion 67 provided in the circulation path assembly 6. Will be in contact.
- the circulation path assembly 6 is divided into the first circulation half 6A and the second circulation half 6B along the center line of the return path 44 and the inner direction change path 60-1.
- the scooping portion 67 is also divided into a first circulation half 6A and a second circulation half 6B along the center line of the inner direction change path 60-1.
- the scooping portion 67 is provided only in the first circulation half 6A, and the scooping portion 67 corresponds to the axial length of the roller 1.
- the length projects from the first circulation half 6A toward the second circulation half 6B. That is, the scooping portion 67 is not divided into the first circulation half 6A and the second circulation half 6B, and the scooping portion 67 is related to the first circulation half 6A and the second circulation half 6B. Is not present at the center of the inner direction change path 60-1, the scooping up due to manufacturing errors and assembly errors of the first circulation half 6A and the second circulation half 6B. There is no step in the center of the portion 67. For this reason, even if the roller 1 repeatedly rides on the scooping portion 67 due to use over time, the scooping portion 67 can be prevented from being deformed. As a result, the durability of the scooping portion 67 is prevented. Thus, it is possible to achieve smooth movement of the moving member 3 relative to the track member 2.
- the circulation path assembly 6 has positioning protrusions 66 as positioning means for the main body member 4.
- the positioning protrusions 66 are provided on the first circulation half 6 ⁇ / b> A constituting the circulation path assembly 6.
- the scooping portion 67 for guiding the roller 1 rolling on the load passage 43 to the inner direction change path 60-1 is also provided in the first circulation half 6A. Therefore, the scooping portion 67 can be accurately positioned with respect to the main body member 4 on which the load rolling surface 42 is formed. Also in this respect, the scooping roller 1 that rolls the track member 2 is scooped up. By the portion 67, it is possible to guide smoothly to the inner direction change path 60-1 of the circulation path assembly 6.
- the second circulation half 6B is provided with a reinforcing projection 68a that fits with the scooping portion 67, and the first circulation half 6A and the second circulation half 6B.
- the reinforcing projection 68a on the second circulation half 6B side is inserted into the scooping portion 67 on the first circulation half 6A side, and the second circulation half 6A is inserted.
- the displacement of the scooping portion 67 with respect to the body 6B is restricted. For this reason, even if an external force in the direction of expanding the scooping portion 67 from the inside to the outside of the inside direction change path 60-1 acts on the scooping portion 67 from each roller 1, the external force is not affected.
- the shape of the scooping portion 67 can be maintained against this, and also in this respect, the durability of the scooping piece 67 is improved, thereby achieving smooth movement of the moving member 3 with respect to the track member 2. It becomes possible.
Abstract
Description
Claims (4)
- 軌道部材(2)と、多数の転動体(1)を介して前記軌道部材(2)に組み付けられ、互いに交差する内側方向転換路(60-1)及び外側方向転換路(60-2)を含む転動体無限循環路を複数有する移動部材(3)と、を備えた転がり案内装置において、
前記移動部材(3)は、前記転動体(1)の負荷転走面(42)及び戻し通路(44)を有する本体部材(4)と、前記内側方向転換路(60-1)を内蔵すると共に前記外側方向転換路(60-2)の内周側案内面(60a)を有する方向転換パイプ(8)と、前記本体部材(4)に装着されると共に前記外側方向転換路(60-2)の外周側案内面(60b,60c)を有する蓋体(5)と、を備え、
前記方向転換パイプ(8)は前記内側方向転換路(60-1)を含む平面において分割された第一循環半体(6A)及び第二循環半体(6B)を有し、前記負荷転走面(42)を転走する転動体(1)を前記内側方向転換路(60-1)に誘導する掬い上げ部(67)が前記第二循環半体(6B)に形成されることなく前記第一循環半体(6A)にのみ形成されていることを特徴とする転がり案内装置。 - 前記方向転換パイプ(8)を前記本体部材(4)に対して位置決めする手段は、前記掬い上げ部(67)を有する前記第一循環半体(6A)に設けられていることを特徴とする請求項1記載の転がり案内装置。
- 前記本体部材(4)には前記方向転換パイプ(8)の位置決め基準となる位置基準穴(47)が形成される一方、前記第一循環半体(6A)には前記位置基準穴(47)に嵌合する前記位置決め手段としての位置決め突部(66)が設けられていることを特徴とする請求項2記載の転がり案内装置。
- 前記第二循環半体(6B)には、前記第一循環半体(6A)に備えられた前記掬い上げ部(67)に嵌合する補強突起(68a)が形成されていることを特徴とする請求項2又は3に記載の転がり案内装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US14/381,821 US9249828B2 (en) | 2012-03-13 | 2013-02-20 | Rolling guidance device |
DE112013001430.0T DE112013001430B4 (de) | 2012-03-13 | 2013-02-20 | Rollführungsvorrichtung |
CN201380011303.7A CN104136791B (zh) | 2012-03-13 | 2013-02-20 | 滚动引导装置 |
Applications Claiming Priority (2)
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JP2012055748A JP5265793B1 (ja) | 2012-03-13 | 2012-03-13 | 転がり案内装置 |
JP2012-055748 | 2012-03-13 |
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PCT/JP2013/054154 WO2013136929A1 (ja) | 2012-03-13 | 2013-02-20 | 転がり案内装置 |
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US (1) | US9249828B2 (ja) |
JP (1) | JP5265793B1 (ja) |
DE (1) | DE112013001430B4 (ja) |
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JP5851476B2 (ja) * | 2013-12-05 | 2016-02-03 | Thk株式会社 | 転がり案内装置 |
JP6436949B2 (ja) * | 2016-09-02 | 2018-12-12 | 日本ベアリング株式会社 | 直動装置 |
JP1575127S (ja) * | 2016-11-16 | 2017-05-01 | ||
JP1575891S (ja) * | 2016-12-20 | 2017-05-08 |
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- 2013-02-20 DE DE112013001430.0T patent/DE112013001430B4/de active Active
- 2013-02-20 US US14/381,821 patent/US9249828B2/en active Active
- 2013-02-20 WO PCT/JP2013/054154 patent/WO2013136929A1/ja active Application Filing
- 2013-03-06 TW TW102107842A patent/TWI613373B/zh active
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JP2013190012A (ja) | 2013-09-26 |
DE112013001430T5 (de) | 2014-12-18 |
TW201348613A (zh) | 2013-12-01 |
DE112013001430B4 (de) | 2023-08-10 |
CN104136791A (zh) | 2014-11-05 |
TWI613373B (zh) | 2018-02-01 |
US20150043843A1 (en) | 2015-02-12 |
US9249828B2 (en) | 2016-02-02 |
JP5265793B1 (ja) | 2013-08-14 |
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