WO2013133241A1 - 転がり案内装置 - Google Patents
転がり案内装置 Download PDFInfo
- Publication number
- WO2013133241A1 WO2013133241A1 PCT/JP2013/055907 JP2013055907W WO2013133241A1 WO 2013133241 A1 WO2013133241 A1 WO 2013133241A1 JP 2013055907 W JP2013055907 W JP 2013055907W WO 2013133241 A1 WO2013133241 A1 WO 2013133241A1
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- WO
- WIPO (PCT)
- Prior art keywords
- direction change
- pipe
- body member
- main body
- circulation path
- 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
- F16C29/0611—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
-
- 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
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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
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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
-
- 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
- F16C33/34—Rollers; Needles
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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 that intersects with the inner direction change path is formed on the outer surface of the direction changing portion, and the cover body is attached to the main body member to cover the circulation path assembly.
- an outer direction change path is formed between the said direction change part and a cover body.
- 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, 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.
- the circulation path assembly In order to smoothly circulate the rolling elements inside the moving member and reduce the movement resistance of the moving member with respect to the track member, it is necessary to smoothly enter the rolling element from the load path to the direction change path, for this purpose, the circulation path assembly must be accurately positioned with respect to the main body member. In particular, it is necessary to position the circuit assembly with high accuracy with respect to the load rolling surface of the main body member.
- the pipe portion of the circulation path assembly is inserted into the through hole of the main body member, thereby positioning the circulation path assembly with respect to the main body member. Since the through hole cannot function as a positioning reference for the main body member of the circulation path assembly, it is difficult to improve the positioning accuracy of the circulation path assembly with respect to the load rolling surface of the main body member. This is because the loaded rolling surface is ground after the body member is quenched, but the through hole into which the pipe portion of the circulation path assembly is inserted is considered in consideration of ease of processing.
- the present invention has been made in view of such problems, and the object of the present invention is to facilitate smooth circulation of the rolling elements in the infinite circulation path and increase the accuracy of the movement of the moving member relative to the track member.
- An object of the present invention is to provide a rolling guide device that can be used.
- the present invention includes a raceway member and a plurality of rolling element infinite circulation paths that are assembled to the raceway member via a large number of rolling elements and include an inner direction change path and an outer direction change path that intersect each other.
- a rolling guide device comprising: a main body member having a load rolling surface and a return path of the rolling element; and the inner direction change path and the outer direction change path. And a lid that is attached to the main body member and has an outer peripheral guide surface of the outer direction change path.
- a position reference hole serving as a position reference for the direction change pipe is formed in the main body member to which the direction change pipe is fixed.
- a positioning protrusion that is press-fitted into the position reference hole is formed in the direction change pipe.
- the outer wall portion of the inner direction change path of the direction change pipe is locked to the rotation of the direction change pipe centered on the positioning protrusion when the lid is fixed to the main body member.
- a rotation restricting protrusion is provided.
- the direction changing pipe since the positioning protrusion formed on the direction changing pipe is press-fitted into the position reference hole formed on the main body member, the direction changing pipe has only a degree of freedom of rotation around the positioning protrusion. Is attached to the correct position of the main body member.
- the outer wall portion of the inner direction change path of the direction change pipe is provided with a rotation restricting projection, so that when the lid is attached to the main body member, the lid becomes the rotation restricting projection. And the rotation of the direction changing pipe around the positioning protrusion is restricted.
- the direction change path provided in the direction change pipe is positioned with high accuracy with respect to the load rolling surface of the main body member, and facilitates smooth circulation of the rolling elements in the infinite circulation path. It is possible to increase the accuracy of the movement of the moving member relative to.
- 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 a first 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, 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. 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 member 5 is formed on the end surface of the main body member 4 to which the lid member 5 is attached, 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 60a of the outer direction change path 60-2 is formed in an arch shape on the outer wall portion of the direction change 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 changing pipe 8 so that the front end surface of the return path pipe of the other circulation path assembly 6 abuts.
- One end of the side guide surface 60 a is opened to the abutting recess 64.
- the outer wall portion of the direction change pipe 8 is provided with a rotation restricting protrusion 68 that positions the direction change pipe 8 when the lid 5 is attached to the main body member 4. Yes.
- the rotation restricting protrusion 68 is provided integrally with the outer wall portion of the direction change pipe 8 so as to cover the outer periphery of the conventional direction change pipe in the vicinity of the connection portion with the return passage pipe 7. It has been. It has a pair of restricting surfaces 68a formed in parallel with each other so as to sandwich the direction changing pipe 8, and its outer shape is substantially rectangular.
- the direction changing pipe 8 is provided with a positioning projection 66 that fits into the position reference hole 47 of the main body member 4 described above.
- the positioning protrusion 66 is present at a position where the inner direction change path 60-1 and the outer direction change path 60-2 intersect, and is formed in a cylindrical shape having an outer diameter slightly larger than the inner diameter of the position reference hole 47. ing.
- 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 65a and a hole 65b 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.
- FIG. 8 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 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 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 2), and the return pipe 8 is returned until the direction changing pipe 8 contacts the leg 4b.
- the tip of the return passage pipe 7 slightly protrudes from the opposite surface of the leg portion 4b.
- FIG. 8 shows one end face of the leg portion 4b to which the circulation path assembly 6 is mounted. However, another circulation path assembly is similarly applied to the opposite end face of the leg portion 4b. 6 is mounted.
- FIG. 9 and FIG. 10 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 return passage pipes 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. 10 is a schematic view showing a state in which the pair of circulation path forming members 6-1 and 6-2 has been attached to the leg portion 4b.
- the ends of the return passage pipes 7 of the circulation path forming members 6-1 and 6-2 are connected to the upper through hole 45a or the lower side. It slightly protrudes from the leg portion 4b through the side through hole 45b and abuts against the abutting concave portion 64 of the direction changing pipe 8 positioned face to face.
- 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. 11 is a perspective view showing a lid 5 that covers the direction changing 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 °.
- 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.
- symbol 54 in FIG. 11 is a through-hole of the fixing bolt for fastening the said cover body 5 to the said main body member 4.
- the receiving grooves 50 and 51 have a shape corresponding to the rotation restricting protrusion 68 provided in the direction changing pipe 8, and a pair of opposing locking surfaces 50a are provided inside thereof. These locking surfaces 50a correspond to a pair of restricting surfaces 68a formed on the rotation restricting protrusions 68 of the direction changing pipe 8, and when the direction changing pipe 8 is received in the receiving grooves 50 and 51, The restriction surface 68a and the locking surface 50a abut.
- FIG. 12 is a perspective view showing a combined state of the circulation path assembly 6-1 and the lid 5 shown in FIG. 9, and the circulation path assembly 6- with respect to one receiving groove 50 of the lid 5 is shown.
- 1 shows a state in which one direction change pipe 8 is accommodated.
- 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 6-1 is inserted into the upper through hole 45a formed in the leg portion 4b 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 6-2 protruding from the lower through hole 45 formed in the leg portion 4b of the main body member 4 is an arrow in the figure. It is designed to be fitted from the line direction.
- the outer direction change path 60-2 is connected to the return path 44 of the other circulation path assembly 6-2.
- 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. 11 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.
- the circulation path assembly 6 and the lid body 5 in order to ensure smooth circulation of the roller 1 in the infinite circulation path, it is important that the inlets of the inner direction change path 60-1 and the outer direction change path 60-2 are accurately positioned with respect to the load rolling surfaces 42a and 42b formed in the main body member 4.
- the positioning of the direction change pipe 8 of the circulation path assembly 6 with respect to the main body member 4 is important.
- the positioning protrusions 66 provided on the direction changing pipe 8 are the leg portions 4 b of the main body member 4. Is fitted into a position reference hole 47 formed in As described above, since the positioning projection 66 has an outer diameter slightly larger than the inner diameter of the position reference hole 47, the positioning projection 66 is press-fitted into the position reference hole 47. The protrusion 66 is prevented from being displaced inside the position reference hole 47.
- the position reference hole 47 is formed on the upper load rolling surface after the body member 4 is quenched. It is formed using the same processing standard as the surface 42a and the lower load rolling surface 42b. Specifically, after completion of the quenching process of the main body member 4, a reference surface 49 (see FIGS. 1 and 2) is formed on the side surface of the leg portion 4b of the main body member 4, and the horizontal portion 4a includes the reference surface 49a.
- the mounting surface 41 is formed, the position reference hole 47 is drilled using the reference surface 49 and the mounting surface 41 as a processing reference, and the upper load rolling surface 42a and the lower load rolling surface 42b are ground.
- the position reference hole 47 by forming the position reference hole 47, the upper load rolling surface 42a, and the lower load rolling surface 42b using the same processing standard, the upper load rolling surface 42a and the lower load rolling surface 42b.
- the positional accuracy of the position reference hole 47 with respect to is high.
- the direction change pipe 8 has a degree of freedom of rotation around the position reference hole 47 only by fitting the positioning protrusion 66 of the direction change pipe 8 to the position reference hole 47. It will be.
- the direction changing pipe 8 of the circulation path assembly 6 is accommodated in the accommodating grooves 50 and 51 of the lid 5, and A rotation restricting protrusion 68 provided on the direction changing pipe 8 is fitted in the receiving grooves 50 and 51, and the lid 5 locks the rotation of the circulation path assembly 6 around the positioning protrusion 66.
- FIG. 13 is a schematic view showing the relationship between the rotation restricting protrusion 68 and the receiving grooves 50 and 51 of the lid 5 around the positioning protrusion 66.
- the direction changing pipe 8 is rotatable around the positioning projection 66 press-fitted into the position reference hole 47 of the main body member 4, so that the rotation provided on the outer wall portion of the direction changing pipe 8.
- the restricting protrusion 68 is movable in an arc shape in the direction of the arrow around the positioning protrusion 66.
- the rotation restricting protrusion 68 is fitted into the receiving grooves 50 and 51 formed in the lid 5, The movement of the rotation restricting protrusion 68 in the direction of the arrow is locked. Specifically, a pair of restricting surfaces 68a formed on the rotation restricting protrusion 68 abuts with a pair of locking surfaces 50a provided in the receiving grooves 50 and 51, respectively, and the direction along the arrow direction The accommodation grooves 50 and 51 regulate the movement of the conversion pipe 8.
- the circulation path assembly 6 is attached to the main body member 4, and the lid member 5 is further attached to the main body member 4 from above the circulation path assembly 6. By mounting, it is possible to ensure the positional accuracy of the circulation path assembly 6 with respect to the main body member 4.
- the rotation restricting projection 68 is provided on the outer wall of the direction changing pipe 8 containing the inner direction changing path 60-1, and the position thereof is changed.
- the pipe 8 is outside the portion where it is connected to the return passage pipe 7, and is the position farthest from the intersection of the inner direction change path 60-1 and the outer direction change path 60-2. That is, the rotation restricting projection 68 is provided on the outer wall of the direction changing pipe 8 at a position sufficiently spaced from the positioning projection 66, and also in this respect, the receiving grooves 50, 51 of the lid 5.
- the insertion of the return passage pipe 7 of the circulation path assembly 6 into the upper through hole 45a or the lower through hole 45b of the main body member 4 is performed on the circulation path assembly 6.
- the inner diameters of the upper through hole 45a and the lower through hole 45b are formed larger than the outer diameter of the return passage pipe 7 so as not to affect the positioning and consequently the positioning of the direction changing pipe 8. That is, the presence of the return passage pipe 7 does not hinder the positioning of the direction changing pipe 8 with respect to the main body member 4 using the positioning protrusion 66 and the rotation restricting protrusion 68.
- the return passage pipe 7 inserted into the through holes 45 a and 45 b of the main body member 4 is fitted to the direction changing pipe 8 of the circulation path assembly 6 attached to the main body member 4 from the opposite side.
- the return passage pipe 7 is supported by a pair of direction change pipes 8 whose longitudinal ends are accurately positioned with respect to the main body member 4, thereby the infinite circulation path of the roller 1.
- FIG. 14 is a perspective view showing a second embodiment of the circulation path assembly 6 '.
- a columnar restricting protrusion 67 protruding toward the lid is provided on the outer wall portion of the direction changing pipe 8, and this protrusion 67 is the present invention. It corresponds to a rotation restricting protrusion.
- FIG. 15 shows a second embodiment of a lid 5 'assembled to the circulation path assembly 6' shown in FIG.
- the lid 5 ′ has a locking hole 56 into which the restriction projection 67 is fitted inside the receiving grooves 50 and 51.
- the restricting projection 67 erected on the direction changing pipe 8 is fitted into the locking hole 56 provided in the lid 5 ′. Thereby, the rotation of the direction changing pipe 8 around the positioning protrusion 66 is locked.
- the circuit assembly 6 ′ in FIG. 14 is the same as the circuit assembly 6 in the first embodiment except for the restricting projection 67, and the lid 5 ′ in FIG. Since the configuration other than the hole 56 is the same as that of the lid body 5 of the first embodiment described above, the same reference numerals as those of the first embodiment are attached to the drawings, and detailed description thereof is omitted. Further, as long as the restricting projection 67 is erected on the outer wall portion of the direction changing pipe 8, the shape of the restricting protrusion 67 may not be cylindrical.
- FIG. 16 is a schematic view showing the positional relationship between the restricting protrusion 67 and the locking hole 56 around the positioning protrusion 66.
- the circulation path assembly 6 ′ is rotatable about the positioning protrusion 66 press-fitted into the position reference hole 47 of the main body member 4, so that it is erected on the circulation path assembly 6 ′.
- the restricting projection 67 is movable in the shape of an arc in the direction of the arrow around the positioning projection 66.
- the restricting projection 67 is fitted into a locking hole 56 formed in the lid body 5 '. The movement of the restriction projection 67 in the direction of the arrow is locked.
- the locking hole 56 is formed as an elongated long hole along a line connecting the positioning protrusion 66 and the restricting protrusion 67 (one-dot chain line in the figure), and the width dimension in the direction perpendicular thereto is the restricting protrusion 67. Is sized to fit with no gap. For this reason, when the lid 5 ′ is put on the circulation path assembly 6 ′ and attached to the main body member 4, the positioning protrusion 67 and the locking hole 56 are easily fitted while the positioning is performed. The rotation of the circulation path assembly 6 ′ around the protrusion 66 can be securely locked, and the positional accuracy of the circulation path assembly 6 ′ with respect to the main body member 4 can be ensured. That is, in the example shown in FIG. 16, the two sides 56 a of the long hole 56 that are opposed to each other with the restriction projection 67 interposed therebetween function as a locking surface that restricts the movement of the direction change pipe 8 in the direction of the arrow. Yes.
- the restricting projection 67 erected on the direction change pipe 8 of the circulation path assembly 6 ′ is fitted into the locking hole 56 provided inside the receiving groove 50, 51 of the lid 5 ′.
- the direction change pipe 8 is formed in the receiving grooves 50 and 51. It is comprised so that it may loosely fit.
- the restricting projection 67 is erected on the outer wall portion of the direction changing pipe 8 containing the inner direction changing path 60-1, and the erected position is the inner side.
- the intersection of the direction change path 60-1 and the outer direction change path 60-2 is separated and is in the vicinity of the edge of the direction change pipe 8. That is, the restricting protrusion 67 is provided on the outer wall portion of the direction change pipe 8 at a position sufficiently spaced from the positioning protrusion 66, and also in this respect, the locking hole 56 of the lid 5 ′
- the restricting protrusion 67 By fitting the restricting protrusion 67, the rotation of the circulation path assembly 6 ′ around the positioning protrusion 66 can be reliably locked.
- both the positioning projection 66 and the regulation projection 67 provided on the circulation path assembly 6 ′ are provided on the first circulation half 6A constituting the circulation path assembly 6 ′, and the second circulation half 6A. It is not provided in the body 6B. For this reason, with respect to the positioning of the circulation path assembly 6 ′ with respect to the main body member 4 using the positioning protrusions 66 and the restriction protrusions 67, only the first circulation half 6 ⁇ / b> A is actually relative to the main body member 4.
- the second circulation half 6 ⁇ / b> B is positioned with high accuracy and is only assembled to the first circulation half 6 ⁇ / b> A positioned with high accuracy with respect to the main body member 4.
- the assembly error between the first circulation half 6A and the second circulation half 6B does not affect the positioning of the circulation path assembly 6 ′ with respect to the main body member 4, and also in this respect, the circulation path assembly. 6 'can be accurately positioned with respect to the upper load rolling surface 20a and the lower load rolling surface 42b of the main body member 4.
- FIG. 17 is a perspective view showing a third embodiment of the circuit assembly.
- a rotation restricting protrusion 68 ′ is provided on the outer wall portion of the direction changing pipe 8 as in the first embodiment.
- the rotation restricting protrusion 68 is provided outside the portion where the direction changing pipe 8 and the return passage pipe 7 are connected.
- the rotation restricting protrusion 68 ′ is provided on the outer wall portion of the direction changing pipe 8 on the opposite side of the return passage pipe 7 with the inner peripheral side guide surface 60a interposed therebetween.
- the rotation restricting protrusion 68 ′ is provided in the vicinity of a portion where the inner direction changing path 60-1 provided in the direction changing pipe 8 is connected to the load rolling surface 42 of the main body member 4, It is provided integrally with the outer wall portion of the direction change pipe 8 so as to cover the outer peripheral portion of the conventional direction change pipe.
- the rotation restricting projection 68 ' has a pair of restricting surfaces 68b formed in parallel with each other so as to sandwich the direction changing pipe 8, and its outer shape is substantially rectangular.
- FIG. 18 shows a third embodiment of the lid 500 assembled to the circulation path assembly 600 shown in FIG. Similar to the first and second embodiments described above, the lid 500 has housing grooves 50 and 51 for housing the direction changing pipe 8 of the circulation path assembly 600.
- the direction change pipe 8 When the direction change pipe 8 is inserted into the receiving grooves 50 and 51, the direction change pipe does not affect the positioning of the circulation path assembly 600 with respect to the main body member 4. 8 is configured to loosely fit into the receiving grooves 50 and 51. That is, in a state where the lid 500 and the circulation path assembly 600 are combined, a slight gap is generated between the inner walls of the housing grooves 50 and 51 and the direction change pipe 8.
- a pair of holding projections 57 are provided opposite to each other at positions corresponding to the rotation restricting projections 68 ′ of the circulation path assembly 600 on the inner walls of the receiving grooves 50 and 51.
- the pair of holding projections 57 are opposed to each other inside the receiving grooves 50 and 51, and when the direction changing pipe 8 of the circulation path assembly 600 shown in FIG.
- the rotation restricting protrusions 68 ′ are press-fitted between the pair of holding protrusions 57, and the holding protrusions 57 are brought into pressure contact with the pair of restricting surfaces 68b formed on the rotation restricting protrusions 68 ′.
- the circuit assembly 600 of FIG. 17 is the same as the circuit assembly 6 of the first embodiment except for the rotation restricting projection 68 ′, and the lid 500 of FIG. Since the configuration other than the protrusion 57 is the same as that of the lid 5 of the first embodiment described above, the same reference numerals as those of the first embodiment are given in the drawings, and detailed description thereof is omitted.
- the direction changing pipe 8 when it is mounted on the main body member 4, the direction changing pipe 8 is press-fitted into the position reference hole 47 of the main body member 4 as described above. It can move in an arc shape around the positioning protrusion 66.
- the direction change pipe 8 of the circulation path assembly 6 is accommodated in the accommodation grooves 50 and 51 of the lid 5, At that time, a pair of holding projections 57 formed on the inner walls of the receiving grooves 50 and 51 sandwich the rotation regulating projection 68 ′ provided on the direction change pipe 8, and the direction change around the positioning projection 66.
- the arcuate movement of the pipe 8 is locked. Specifically, a pair of holding projections 57 provided in the receiving grooves 50 and 51 abut against a pair of restricting surfaces 68b formed on the rotation restricting protrusion 68 ′, respectively. The fine movement of the direction change pipe 8 is restricted.
- the fitting between the direction change pipe 8 of the circulation path assembly 600 and the receiving grooves 50 and 51 of the lid 500 is a gap. It is preferable to set it as a fit. However, there is a possibility that the direction changing pipe 8 may slightly move inside the receiving grooves 50 and 51, and the direction changing path 6 is accurately positioned with respect to the load rolling surface 42 formed on the main body member 4. There is a concern that can not.
- the circulation path assembly 600 is a combination of the first circulation half 6A and the second circulation half 6B. As shown in FIG. 7, these are assembled only by fitting the projections 65a and the holes 65b.
- the accommodation grooves 50 and 51 of the lid body 500 and the direction change pipe 8 of the circulation path assembly 600 are fitted with a clearance.
- the pair of holding projections 57 provided in the accommodation grooves 50 and 51 sandwich the rotation restricting projection 68 ′ provided in the direction change pipe 8, the inside of the accommodation grooves 50 and 51
- the direction changing pipe 8 does not slightly move, and the direction changing path with respect to the load rolling surface 42 formed on the main body member 4 without impairing the assembly workability of the circulation path assembly 600 and the lid 50. 6 can be accurately positioned.
- the rotation restricting projection 68 ′ to which the holding projection 57 is pressed is provided in the vicinity of the portion where the inner direction change path 60-1 is connected to the load rolling surface 42 of the main body member 4, this point.
- the inlet portion on the load rolling surface 42 side of the inner direction change path 60-1 can be accurately positioned with respect to the load rolling surface 42 of the main body member 4.
- the pair of holding protrusions 57 formed in the housing grooves 50 and 51 are arranged along the direction in which the first circulation half 6A and the second circulation half 6B of the circulation path assembly 600 are pressed against each other.
- the rotation restricting protrusion 68 ′ of the assembly 600 is sandwiched to prevent the first circulation half 6A and the second circulation half 6B from loosening inside the receiving grooves 50 and 51.
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- General Engineering & Computer Science (AREA)
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Abstract
Description
Claims (8)
- 軌道部材(2)と、多数の転動体(1)を介して前記軌道部材に組み付けられ、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)を含んで構成された複数の転動体無限循環路を有する移動部材(3)と、を備えた転がり案内装置において、
前記移動部材は、前記転動体の負荷転走面(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を内蔵すると共に前記外側方向転換路の内周側案内面(60a)を有する方向転換パイプ(8)と、前記本体部材に装着されると共に前記外側方向転換路の外周側案内面(60b,60c)を有する蓋体(5,5',500)と、を備え、
前記方向転換パイプ(8)が固定される前記本体部材(4)には当該方向転換パイプの位置基準となる位置基準穴(47)が形成される一方、前記方向転換パイプ(8)には当該位置基準穴に圧入される位置決め突起(66)が形成され、また、
前記方向転換パイプ(8)の前記内側方向転換路(60-1)の外壁部には、前記蓋体を前記本体部材に固定した際に、前記位置決め突起を中心とした当該方向転換パイプの回転を係止する回転規制突部(67,68,68')が設けられていることを特徴とする転がり案内装置。 - 前記回転規制突部(68')は前記方向転換パイプ(8)を挟むようにして互いに並行に形成された一対の規制面(68b)を有する一方、前記蓋体(500)には前記回転規制突部の一対の規制面に圧接する一対の保持突起(57)が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。
- 前記回転規制突部(68')は、前記方向転換パイプ(8)に対する内周側案内面(60a)の形成位置を挟んで、転動体(1)の戻し通路(44)と反対側、すなわち本体部材(4)の負荷転走面(42)の近傍に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)から構成され、前記蓋体(500)に設けられた一対の保持突起(57)はこれら第一循環半体及び第二循環半体を互いに押し付け合う方向に沿って前記回転規制突部の規制面(68b)に圧接することを特徴とする請求項3記載の転がり案内装置。
- 前記回転規制突部(67)は前記方向転換パイプ(8)における内側方向転換路(60-1)の外壁部から前記蓋体(5)に向けて円柱状に突出しており、各蓋体(5)には前記方向転換パイプ(8)の収容溝(50,51)が設けられると共に、当該収容溝内には前記回転規制突部が嵌合する係止穴(56)が形成さ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。
- 前記係止穴(56)は、前記方向転換パイプの前記位置決め突起(66)と前記回転規制突部(67)を結んだ線に沿って細長く開口した長穴に形成されていることを特徴とする請求項5記載の転がり案内装置。
- 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)から構成され、前記位置決め突起(66)及び前記回転規制突部(67)は第一循環半体(6A)に形成されていることを特徴とする請求項6記載の転がり案内装置。
- 前記位置基準穴(47)は前記負荷転走面(42)と同じ加工基準を用いて前記本体部材(4)に形成されていることを特徴とする請求項1乃至7のいずれかに記載の転がり案内装置。
Priority Applications (3)
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US14/380,771 US9273722B2 (en) | 2012-03-08 | 2013-03-05 | Rolling guide device |
DE112013002174.9T DE112013002174B4 (de) | 2012-03-08 | 2013-03-05 | Rollführungsvorrichtung |
CN201380012228.6A CN104302934B (zh) | 2012-03-08 | 2013-03-05 | 滚动引导装置 |
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JP2012-051199 | 2012-03-08 |
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US (1) | US9273722B2 (ja) |
JP (1) | JP6033125B2 (ja) |
CN (1) | CN104302934B (ja) |
DE (1) | DE112013002174B4 (ja) |
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- 2013-03-05 CN CN201380012228.6A patent/CN104302934B/zh active Active
- 2013-03-05 DE DE112013002174.9T patent/DE112013002174B4/de active Active
- 2013-03-05 US US14/380,771 patent/US9273722B2/en active Active
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Also Published As
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US20150016759A1 (en) | 2015-01-15 |
TW201407060A (zh) | 2014-02-16 |
DE112013002174B4 (de) | 2017-11-23 |
TWI613374B (zh) | 2018-02-01 |
JP2013213578A (ja) | 2013-10-17 |
JP6033125B2 (ja) | 2016-11-30 |
DE112013002174T5 (de) | 2015-01-15 |
CN104302934B (zh) | 2016-10-19 |
US9273722B2 (en) | 2016-03-01 |
CN104302934A (zh) | 2015-01-21 |
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