WO2015033486A1 - リニアガイド装置のキャップ及びリニアガイド装置 - Google Patents
リニアガイド装置のキャップ及びリニアガイド装置 Download PDFInfo
- Publication number
- WO2015033486A1 WO2015033486A1 PCT/JP2014/000679 JP2014000679W WO2015033486A1 WO 2015033486 A1 WO2015033486 A1 WO 2015033486A1 JP 2014000679 W JP2014000679 W JP 2014000679W WO 2015033486 A1 WO2015033486 A1 WO 2015033486A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- counterbore
- cap
- linear guide
- fitting
- guide device
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 35
- 230000002787 reinforcement Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000004308 accommodation Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 12
- 238000005096 rolling process Methods 0.000 description 12
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
- F16C29/08—Arrangements for covering or protecting the ways
- F16C29/082—Arrangements for covering or protecting the ways fixed to the way
-
- 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
- F16C33/72—Sealings
- F16C33/726—Sealings with means to vent the interior of the bearing
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt 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
- F16C29/004—Fixing of a carriage or rail, e.g. rigid mounting to a support structure or a movable part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
- F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
- F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
- F16C29/0642—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls
- F16C29/0647—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls with load directions in X-arrangement
Definitions
- the present invention relates to a cap and a linear guide device for closing a mounting hole provided in a guide rail of the linear guide device.
- the linear guide device includes a guide rail 1, a slider 2, and a plurality of rolling elements 3.
- the guide rail 1 and the slider 2 have rolling surfaces 11 and 21 that are arranged to face each other and form a rolling path of the rolling element 3.
- the slider 2 has a return path 22 of the rolling element 3 and a direction changing path that connects the return path 22 and the rolling path.
- the rolling path, the return path, and the direction changing path constitute a circulation path for the rolling elements, and the rolling element 3 circulates in the circulation path so that one of the guide rail 1 and the slider 2 is in relation to the other.
- the guide rail 1 of the linear guide device is formed with a mounting hole 4 for mounting to a mounting portion such as a base using a bolt (not shown).
- the mounting hole 4 includes a counterbore portion 41 that accommodates the head portion of the bolt, and a shaft accommodating portion 42 that accommodates the shaft portion of the bolt.
- a bolt is inserted into the mounting hole 4 and screwed into the mounted portion, whereby the guide rail 1 is fixed to the mounted portion such as a base with the bolt.
- the upper portion of the spot facing portion 41 is closed with a cap (not shown) for the purpose of preventing foreign matters such as burrs from entering.
- a cap As a conventional example of this cap, the one described in Patent Document 1 is known.
- the linear motion guide unit described in Patent Document 1 includes a plug for closing a mounting hole that opens on the upper surface of the track rail, and the plug is made of iron or stainless steel, and the upper surface of the track rail.
- a disc-shaped top plate portion that is substantially flush with the top plate portion and a cylindrical skirt portion that hangs down from the top plate portion, and the outer peripheral portion of the plug is the outer peripheral portion of the top plate portion, and is a mounting hole
- a lid that closes the cover, a concave groove that is the outer periphery of the skirt and the thickness of the skirt is reduced, and a fitting that has a squeeze to the mounting hole and is fitted and fixed to the mounting hole Department.
- the conventional linear motion guide unit shown in Patent Document 1 has the following problems. That is, in the linear motion guide unit shown in Patent Document 1, when mounting a plug, the plug is driven into the mounting hole by driving it onto the plug with a driving jig such as a hammer. At that time, pressure rises in the space formed by the mounting hole and the plug, particularly the mounting hole and the fitting portion. Due to the pressure increase, the plug cannot be inserted into the mounting hole, and the upper surface of the plug floats from the upper surface of the guide rail from the mounting hole, and there is a possibility that a concave portion or a convex portion is formed on the upper surface of the guide rail.
- the present invention has been made to solve the above-described problems, and the object thereof is to provide a mounting hole provided in the guide rail as a cap that closes a counterbore portion that accommodates the head portion of the bolt.
- a cap of a linear guide device accommodates a counterbore portion for accommodating a bolt head and a shaft portion of the bolt provided on a guide rail of the linear guide device.
- the counterbore portion has an outer diameter that extends from the receiving portion and receives an interference fit between the receiving portion that receives the driving jig and the counterbore portion.
- a fitting portion that is press-fitted into the fitting portion, a foreign matter receiving groove that is formed on the outer periphery of the fitting portion and that contains foreign matter generated from the fitting portion when driven into the counterbore portion, and the fitting
- the fitting part is located on the outer periphery of the part.
- a gas discharge groove that extends from the foreign matter receiving groove to the inside of the counterbore portion in a state of being press-fitted into the counterbore portion, and discharges the gas inside the counterbore portion to the foreign matter receiving groove side. It is characterized by that.
- the cap of this linear guide device when the cap is driven into the counterbore of the mounting hole by driving it with a driving tool such as a hammer from above the receiving portion, a part of the fitting portion is scraped off.
- the generated foreign matter such as burrs enters the foreign matter accommodation groove (burr storage groove). For this reason, there is no possibility that foreign matters such as burrs are left on the upper surface of the guide rail, and therefore there is no possibility that a concave portion or a convex portion is formed on the upper surface of the guide rail.
- the cap extends from the foreign matter receiving groove to the inside of the counterbore portion with the fitting portion being press-fitted into the counterbore portion on the outer periphery of the fitting portion, and the gas inside the counterbore portion is transferred to the foreign matter containing groove side. Since it is equipped with a gas discharge groove for discharging to the mounting hole, the counterbore part and the fitting part of the mounting hole are used when driving the cap into the mounting hole by driving it onto the receiving part with a driving tool such as a hammer.
- the gas inside the counterbore which is a space formed between the two, passes through the gas discharge groove and is discharged to the foreign substance storage groove side. For this reason, the pressure rise inside the spot facing portion can be reduced.
- the gas discharge groove is formed at two positions such as a circumference on the outer periphery of the fitting portion formed in a cylindrical shape.
- the fitting portion includes a tapered portion that guides introduction of the fitting portion into the counterbore portion when the driving is performed, and an outer peripheral surface and a bottom surface of the fitting portion. It is preferable to form it over.
- the depth of the gas discharge groove is L
- the outer diameter of the fitting portion is ⁇ D
- the inner diameter of the taper portion is ⁇ d
- the depth of the gas discharge groove is L is preferably set in a range of 0 ⁇ L ⁇ ( ⁇ D ⁇ d) / 2.
- the receiving portion is formed in a disc shape and an annular reinforcing rib is provided on one surface of the receiving portion.
- the receiving portion is formed in a disc shape, and an annular first reinforcing rib is formed on one surface of the receiving portion, and the annular first reinforcing member from the center of the receiving portion. You may provide the 2nd reinforcement rib extended radially toward a rib.
- a mounting hole including a counterbore portion that accommodates the head portion of the bolt and a shaft accommodating portion that accommodates the shaft portion of the bolt is formed in the guide rail.
- the linear guide device is characterized in that the counterbore portion is closed by the cap described above.
- the cap of the linear guide device and the linear guide device according to the present invention it is possible to prevent burrs and the like from remaining on the upper surface of the guide rail. Further, there is no possibility that a concave portion or a convex portion is formed on the upper surface of the guide rail.
- FIG. 2 is a cross-sectional view showing a state in which the guide rail is fixed to the attached portion by a bolt inserted from the attachment hole, and the cap shown in FIG. 1 is attached to the spotted portion of the attachment hole.
- the 1st modification of a cap is shown, (a) is a top view, (b) is the front view which cut
- the 2nd modification of a cap is shown, (a) is a top view, (b) is the front view which cut
- the cap 5 has a head 61 of a bolt 6 provided on the guide rail 1 of the linear guide device.
- the counterbore part 41 of the attachment hole 4 provided with the counterbore part 41 to accommodate and the shaft accommodating part 42 which accommodates the axial part 62 of the volt
- the cap 5 is press-fitted into the counterbore 41 by being hammered into the counterbore 41 with a hammer 72 as a driving jig, and closes the counterbore 41.
- the cap 5 has an outer diameter that extends from the lower surface of the flange portion 52 as a receiving portion for receiving the hammer 72 and the counterbore portion 41 and that fits between the counterbore portion 41.
- a cylindrical fitting portion 54 that is press-fitted into the counterbore portion 41. That is, the outer diameter of the fitting portion 54 is set to a size that provides an interference fit with respect to the hole diameter C of the counterbore portion 41 (see FIGS. 2 and 3A). Then, a burr storing groove for accommodating a burr 73 as a foreign matter generated from the fitting portion 54 at the time of driving into the counterbore portion 41 at a portion adjacent to the flange portion 52 on the outer periphery of the fitting portion 54.
- (Foreign material accommodation groove) 53 is formed in the circumferential direction. Then, as shown in FIGS. 1A, 1 ⁇ / b> B, and 2 ⁇ / b> C and FIG. 2, the fitting portion 54 has a counterbore portion 41 of the fitting portion 54 when driving into the counterbore portion 41. A tapered portion 51 that guides the introduction to the outer peripheral surface 54b and the bottom surface 54a of the fitting portion 54 is formed.
- the cap 5 is formed, for example, by synthetic resin injection molding.
- the production of the cap 5 can be made inexpensive. That is, when the cap 5 is made of iron or stainless steel as in Patent Document 1, it is difficult to manage the tightening allowance, and it becomes difficult to press-fit the counterbore portion 41 due to variations in the radial dimension in manufacturing. There is a problem that the gap becomes large. For this reason, it is necessary to increase the dimensional accuracy of the cap 5, and the manufacturing cost becomes expensive.
- the cap 5 is made of a synthetic resin, since it has flexibility, it is easy to manage the tightening allowance, allow variations in the radial dimension in manufacturing, and reduce the manufacturing cost of the cap 5. be able to.
- the material of the cap 5 will be described in detail below. Due to the vibration generated when the slider 2 (see FIG. 6) passes through the guide rail 1, the squeezing between the fitting portion 54 and the counterbore portion 41 is lowered, and the cap 5 falls into the counterbore portion 41. There is a fear. For this reason, as a material of the cap 5, the thing excellent in abrasion resistance is good. Further, it is necessary to prevent the cap 5 from being deformed by the lubricant applied to the upper surface of the guide rail 1 from the traveling slider 2. Therefore, the material of the cap 5 is polyamide, polyacetal, or the like as the plastic. As the thermoplastic elastomer, a polyamide-based thermoplastic elastomer is used.
- a polyamide plastic or a polyamide elastomer is preferable.
- a polyamide-based resin is preferable.
- the cap 5 hits the flange portion 52 of the cap 5 from above with a driving jig such as a hammer 72, and the cap 5 is inserted into the counterbore portion 41 of the mounting hole 4.
- nylon 6 is preferable as the polyamide-based plastic in view of impact resistance.
- FIG. 2 shows a state in which the guide rail 1 is fixed to the attached portion 7 by the bolt 6 inserted from the attachment hole 4 and the cap 5 is attached to the counterbore portion 41 of the attachment hole 4. .
- the bolt 6 has a head portion 61 and a shaft portion 62.
- the bolt 6 is inserted into the mounting hole 4 of the guide rail 1 and formed in the mounted portion 7. Therefore, the shaft portion 62 is screwed into the screw portion 7a, thereby guiding the shaft.
- the rail 1 is fixed to the mounted portion 7.
- the mounting hole 4 of the guide rail 1 includes a counterbore portion 41 that accommodates the head portion 61 of the bolt 6, and a shaft accommodating portion 42 that accommodates the shaft portion 62.
- the counterbore part 41 is a circular hole into which the fitting part 54 of the cap 5 is press-fitted and the flange part 52 is fitted, and the hole diameter is C as shown in FIGS. 2 and 3A. ing.
- the bottom surface 54 a of the fitting portion 54 is directed to the bolt 6 side and placed on the top of the counterbore portion 41 of the attachment hole 4 formed in the guide rail 1.
- the upper surface of the part 52 is hit with a hammer 72. Accordingly, the fitting portion 54 of the cap 5 is press-fitted into the counterbore portion 41 while being elastically deformed, and the flange portion 52 is fitted into the counterbore portion 41.
- the upper surface of the flange portion 52 is flush with the upper surface of the guide rail 1. As shown in FIG.
- the fitting portion 54 has a tapered portion 51 that guides the introduction of the fitting portion 54 into the spot facing portion 41 when driving into the spot facing portion 41. It is formed over the outer peripheral surface 54b and the bottom surface 54a. For this reason, the fitting part 54 can be easily introduced into the counterbore part 41.
- a part of the fitting portion 54 press-fitted into the counterbore portion 41 is caused by the guide rail 1 as shown in FIG. Scraped off.
- the burr 73 generated thereby enters the burr storing groove 53 of the cap 5. For this reason, there is no possibility of leaving the burr 73 on the upper surface of the guide rail 1. Therefore, in this embodiment, there is no possibility that the burrs 73 are deposited on the upper surface of the guide rail 1.
- the gas discharge grooves 55 are formed at two circumferentially coordinated positions on the outer periphery of the fitting portion 54, and the cross-sectional shape thereof is an arc shape.
- the cap 5 extends from the burr storing groove 53 to the inside of the spot facing portion 41 with the fitting portion 54 being press-fitted into the spot facing portion 41 on the outer periphery of the fitting portion 54. Since the gas discharge groove for discharging the gas inside the bore portion 41 to the burr storing groove 53 side is provided, when the cap 5 is struck into the mounting hole 4 by driving it onto the flange portion 52 with a hammer 72 In addition, the gas inside the spot facing portion 41, which is a space formed by the spot facing portion 41 of the mounting hole 4 and the fitting portion 54, passes through the gas discharging groove 55 and is discharged to the burr storing groove 53 side. For this reason, the pressure rise inside the spot facing portion 41 can be reduced. Accordingly, it is possible to avoid the possibility that the cap 5 cannot be inserted into the mounting hole 4 and the upper surface of the cap 5 is lifted from the mounting hole 4 from the upper surface of the guide rail 1 and the upper surface of the guide rail 1 is uneven.
- each gas discharge groove 55 is formed on the outer periphery of the fitting portion 54, when the flange portion 52 is driven by the hammer 72, each gas discharge groove 55 is crushed by the hammer 72. There is no.
- the depth of the gas discharge groove 55 is L
- the outer diameter of the fitting portion 54 is ⁇ D
- the inner diameter of the taper portion 51 is ⁇ d
- the depth L is set in a range of 0 ⁇ L ⁇ ( ⁇ D ⁇ d) / 2. For this reason, the thickness is secured in the gas discharge groove 55, and the strength reduction of the entire cap 5 can be avoided.
- L 0, the gas discharge groove 55 does not exist.
- FIGS. 4 (a), (b) and (c) a first modification of the cap will be described, and with reference to FIGS. 5 (a), (b) and (c), a second modification of the cap will be described.
- An example will be described. 4 (a), (b), (c) and FIGS. 5 (a), (b), (c), the same members as those in FIGS. 1 (a), (b), (c) are the same. Reference numerals may be attached and descriptions thereof may be omitted.
- FIGS. 4A, 4B and 4C the basic structure of the cap 5 of the first modification is the same as that of the cap 5 shown in FIGS. 1A, 1B and 1C. However, the difference is that an annular first reinforcing rib 52a and an annular second reinforcing rib 52b are provided on the lower surface of the flange portion 52 formed in a disk shape.
- the first reinforcing rib 52a is formed in an annular shape around the center of the flange portion 52 on the lower surface of the flange portion 52, and as shown in FIG. It extends halfway from the lower surface of the flange portion 52 to the bottom surface of the fitting portion 54.
- the second reinforcing rib 52b is formed in an annular shape having a larger diameter than the first reinforcing rib 52a around the center of the flange portion 52 on the lower surface of the flange portion 52.
- the first reinforcing rib 52a is formed to have a predetermined interval.
- the 2nd reinforcement rib 52b is extended in the middle from the lower surface of the flange part 52 to the bottom face of the fitting part 54, as shown in FIG.4 (b).
- the bottom surface of the fitting portion 54 and the first reinforcing rib 52a and the second reinforcing rib 52b may have the same height.
- the first reinforcing rib 52a and the second reinforcing rib 52b extend partway from the lower surface of the flange portion 52 to the bottom surface of the fitting portion 54 (the end portions of the first reinforcing rib 52a and the second reinforcing rib 52b are fitted).
- the cap 5 (which has not reached the bottom surface of the joining portion 54) is easy to hit because the contact surface with the gas is small.
- the rigidity of the flange portion 52 can be increased. It is possible to prevent the flange portion 52 from being deformed when being inserted. Thereby, when the cap 5 is driven into the mounting hole 4, it is possible to avoid the inconvenience that the upper surface of the flange portion 52 due to the deformation of the flange portion 52 is not flush with the upper surface of the guide rail 1.
- the 1st reinforcement rib 52a and the 2nd reinforcement rib 52b are provided in the lower surface of the flange part 52 as a reinforcement rib, the number may be one or three or more.
- interval between reinforcement ribs in the case of providing two or more reinforcement ribs is arbitrary, and is not restricted to the example shown in FIG.4 (c).
- the basic structure of the cap 5 of the second modified example is the same as that of the cap 5 shown in FIGS. 1A, 1B, and 1C.
- the embodiment is different in that six (6) second reinforcing ribs 52d are provided.
- the first reinforcing rib 52c is formed in an annular shape around the center of the flange portion 52 on the lower surface of the flange portion 52, and as shown in FIG. It extends from the lower surface of the flange portion 52 to the bottom surface of the fitting portion 54.
- Each of the second reinforcing ribs 52d extends radially from the center of the flange portion 52 toward the annular first reinforcing rib 52c on the lower surface of the flange portion 52, as shown in FIG. As shown to b), it has extended to the middle from the lower surface of the flange part 52 to the bottom face of the fitting part 54.
- FIG. thus, by providing the annular first reinforcing rib 52c and the second reinforcing rib 52d extending radially toward the first reinforcing rib 52c on the lower surface of the flange portion 52, the rigidity of the flange portion 52 of the first modification is improved.
- the number is arbitrary, and two or more may be provided. Further, although the six second reinforcing ribs 52d are provided, the number is arbitrary and may be a number other than six. As mentioned above, although embodiment of this invention has been described, this invention is not limited to this, A various change and improvement can be performed.
- the material of the cap 5 illustrates a synthetic resin
- the material of the cap 5 of the present invention is not limited to the synthetic resin, and may be a metal such as an aluminum alloy, a copper alloy, or steel.
- the driving jig for the cap 5 may be other than the hammer 72. Further, the foreign matter generated from the fitting portion 54 at the time of driving into the spot facing portion 41 may be other than the burr 73.
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Abstract
Description
リニアガイド装置の案内レール1には、基台等の被取付部に図示しないボルトを用いて取り付けるための取付け穴4が形成されている。
このキャップの従来例としては、特許文献1に記載されたものが知られている。特許文献1に記載された直動案内ユニットにおいては、軌道レールの上面に開口する取付け用孔を塞ぐための埋栓を備え、この埋栓が、鉄又はステンレス鋼で構成され、軌道レールの上面と実質的に同一面になる円板状の天板部と、天板部から垂下した円筒状のスカート部からなり、埋栓の外周部が、天板部の外周部であって取付け用孔を塞ぐ蓋部と、スカート部の外周であってスカート部の肉厚を薄くした凹周溝部と、取付け用孔に対してシメシロを有して取付け用孔に嵌合して固着される嵌合部とを備えている。
この埋栓を備えた特許文献1に記載の直動案内ユニットによれば、埋栓を取付け用孔に挿入した際に、嵌合部から発生するバリ等の異物を凹周溝部によって保持し当該異物の軌道レール上面への移動を防ぐことができる。
即ち、特許文献1に示した直動案内ユニットにおいて、埋栓を取り付ける際には、埋栓の上にハンマー等の打込み治具で打ち込むことにより、取付け用孔に埋栓を叩き入れる。その際に、取付け用孔と埋栓、特に取付け用孔と嵌合部とがなす空間に圧力上昇が生じる。その圧力上昇のため、埋栓は取付け用孔に挿入することができず、取付け孔から案内レール上面より埋栓上面が浮き、案内レール上面には凹部または凸部が生じるおそれがあった。
従って、本発明は、上述の課題を解決するためになされたものであり、その目的は、案内レールに設けた取付け穴の、ボルトの頭部を収容する座ぐり部を塞ぐキャップとして、取り付けの際に、案内レールの上面に凹部または凸部が生じないようにできるリニアガイド装置のキャップ及びリニアガイド装置を提供することにある。
そして、キャップは、嵌合部の外周において嵌合部が座ぐり部に圧入された状態で異物収容溝から座ぐり部の内部に至るまで延び、座ぐり部の内部の気体を異物収容溝側に排出する気体排出用溝を備えているので、受部の上にハンマー等の打込み治具で打ち込むことにより、取付用孔にキャップを叩き入れる際に、取付け穴の座ぐり部と嵌合部とがなす空間である座ぐり部の内部の気体が気体排出用溝を通過して異物収容溝側に排出される。このため、座ぐり部の内部の圧力上昇を小さくすることができる。これにより、キャップが取付け穴に挿入できずに取付け穴から案内レール上面よりキャップの上面が浮き、案内レール上面に凹部または凸部が生じるおそれを回避することができる。
また、このリニアガイド装置のキャップにおいて、前記嵌合部には、前記打込みを行う際の前記嵌合部の前記座ぐり部への導入を案内するテーパ部を前記嵌合部の外周面と底面とにかけて形成することが好ましい。
更に、このリニアガイド装置のキャップにおいて、前記気体排出用溝の深さをL、前記嵌合部の外径をφD、前記テーパ部の内径をφdとした場合、前記気体排出用溝の深さLは0<L<(φD-φd)/2の範囲に設定されることが好ましい。
また、このリニアガイド装置のキャップにおいて、前記受部が円板状に形成されるとともに、前記受部の一面に、環状の第1補強リブと、前記受部の中心から前記環状の第1補強リブに向かって放射状に延びる第2補強リブとを設けてもよい。
更に、本発明の別の態様に係るリニアガイド装置は、ボルトの頭部を収容する座ぐり部と前記ボルトの軸部を収容する軸収容部とを備えた取付け穴が、案内レールに形成されたリニアガイド装置において、前述のキャップにより前記座ぐり部を塞いでいることを特徴とする。
図1(a),(b),(c)、図2及び図3(a),(b)に示すキャップ5は、リニアガイド装置の案内レール1に設けた、ボルト6の頭部61を収容する座ぐり部41とボルト6の軸部62を収容する軸収容部42とを備えた取付け穴4の座ぐり部41を塞ぐものである。キャップ5は、座ぐり部41に打込み治具としてのハンマー72によって打込むことにより座ぐり部41に圧入されて座ぐり部41を塞ぐようになっている。
ここで、キャップ5は、ハンマー72に対する受けとなる受部としての円板状のフランジ部52と、フランジ部52の下面から延び、座ぐり部41との間にしまりばめになる外径を有するとともに座ぐり部41に圧入される円筒状の嵌合部54とを備えている。つまり、嵌合部54の外径は、座ぐり部41の穴径C(図2及び図3(a)参照)に対してしまりばめになる大きさに設定されている。そして、嵌合部54の外周であってフランジ部52に隣接した部分には、座ぐり部41への打込みの際に嵌合部54から発生した異物としてのバリ73を収容するバリ格納用溝(異物収容溝)53が円周方向に形成されている。そして、嵌合部54には、図1(a),(b),(c)及び図2に示すように、座ぐり部41への打込みを行う際の嵌合部54の座ぐり部41への導入を案内するテーパ部51が嵌合部54の外周面54bと底面54aとにかけて形成されている。
スライダ2(図6参照)が案内レール1を通過する時に発生する振動によって、嵌合部54と座ぐり部41とのシメシロが低下して、キャップ5が座ぐり部41内に脱落してしまうおそれがある。このため、キャップ5の材料としては、耐摩耗性に優れているものが良い。また、走行中のスライダ2から案内レール1の上面に塗布された潤滑剤によって、キャップ5の変形等を防止する必要がある。このため、キャップ5の材料としては、プラスチックとしては、ポリアミド、ポリアセタール等である。また、熱可塑性エラストマーとしてはポリアミド系の熱可塑性エラストマーが用いられる。キャップ5の成形収縮性を考慮すると、ポリアミド系プラスチックまたはポリアミド系エラストマーが好ましい。また、耐熱性を考慮するとポリアミド系の樹脂が好ましい。さらに、キャップ5はハンマー72等の打込み治具によってキャップ5のフランジ部52を上方から叩き、キャップ5を取付け穴4の座ぐり部41に挿入する。このため、耐衝撃性を苦慮すると、ポリアミド系のプラスチックとしては、ナイロン6が好ましい。
案内レール1の取付け穴4は、ボルト6の頭部61を収容する座ぐり部41と、軸部62を収容する軸収容部42とを備えている。座ぐり部41は、キャップ5の嵌合部54が圧入されるとともにフランジ部52が嵌る円形状の穴で、その穴径は、図2及び図3(a)に示すように、Cとなっている。
なお、図3(a)に示すように、キャップ5のフランジ部52の上面をハンマー72で叩く際には、キャップ5のフランジ部52の上面に当て板71を当て、当て板71をハンマー72で叩く。
そして、取付け穴4の座ぐり部41にキャップ5を叩き入れる際には、図3(b)に示すように、座ぐり部41に圧入される嵌合部54の一部が案内レール1によって削り取られる。これにより生じたバリ73は、キャップ5のバリ格納用溝53に入る。このため、案内レール1の上面にバリ73を残すおそれがない。
したがって、この実施形態において、案内レール1の上面にバリ73が堆積するおそれがない。
このため、嵌合部54が座ぐり部41の側面を通過した後、フランジ部52の側面が座ぐり部41の側面を通過するときには、座ぐり部41の側面の表面は滑らかになっているので、フランジ部52の側面からバリが発生するおそれは少ない。
また、キャップ5を取付け穴4に叩き入れる際には、取付け穴4の座ぐり部41と嵌合部54とがなす空間である座ぐり部41の内部に圧力上昇が生じる。この圧力上昇が生じると、案内レール1の上面からキャップ5が浮くので、案内レール1の上面に凹凸を形成するおそれがある。本実施形態においては、この圧力上昇を防止するために、図1(a),(b),(c)及び図2に示すように、キャップ5は、嵌合部54の外周において嵌合部54が座ぐり部41に圧入された状態でバリ格納用溝53から座ぐり部41の内部に至るまで延び、座ぐり部41の内部の気体をバリ格納用溝53側に排出する気体排出用溝を備えている。図1(b)に示すように、気体排出用溝55は嵌合部54の外周の円周等配位2カ所に形成され、その断面形状は円弧状である。
また、図1(c)に示すように、気体排出用溝55の深さをL、嵌合部54の外径をφD、テーパ部51の内径をφdとした場合、気体排出用溝55の深さLは0<L<(φD-φd)/2の範囲に設定されている。このため、気体排出用溝55で肉厚は確保されることになり、キャップ5全体の強度低下を回避することができる。L=0では気体排出用溝55が存在しないことになる。
先ず、第1変形例のキャップ5は、図4(a),(b),(c)に示すように、基本構成は図1(a),(b),(c)示すキャップ5と同様であるが、円板状に形成されたフランジ部52の下面に環状の第1補強リブ52aと環状の第2補強リブ52bを設けた点で異なっている。
また、第2補強リブ52bは、図4(c)に示すように、フランジ部52の下面においてフランジ部52の中心を中心として第1補強リブ52aよりも大きい直径の円環状に形成され、第1補強リブ52aと所定間隔を空くように形成されている。そして、第2補強リブ52bは、図4(b)に示すように、フランジ部52の下面から嵌合部54の底面に至る途中まで延びている。嵌合部54の底面と第1補強リブ52a及び第2補強リブ52bとが同じ高さになってもよい。但し、第1補強リブ52a及び第2補強リブ52bがフランジ部52の下面から嵌合部54の底面に至る途中まで延びている(第1補強リブ52a及び第2補強リブ52bの先端部が嵌合部54の底面まで達していない)キャップ5は、気体との接触面が小さいため、叩き入れやすい。
なお、補強リブとして、第1補強リブ52a及び第2補強リブ52bをフランジ部52の下面に設けてあるが、個数は1つでも3つ以上であってもよい。また、補強リブを複数設ける場合の補強リブ間の間隔は任意であり、図4(c)に示した例に限られない。
ここで、第1補強リブ52cは、図5(c)に示すように、フランジ部52の下面においてフランジ部52の中心を中心として円環状に形成され、図5(b)に示すように、フランジ部52の下面から嵌合部54の底面に至るまで延びている。
このように、フランジ部52の下面に環状の第1補強リブ52cと第1補強リブ52cに向かって放射状に延びる第2補強リブ52dとを設けることにより、フランジ部52の剛性を変形例1の場合よりも高めることができるので、フランジ部52をハンマー72で打込む際にそのフランジ部52の変形をより効果的に防止することができる。これにより、キャップ5を取付け穴4に打ち込んだ際に、フランジ部52の変形に起因するフランジ部52の上面が案内レール1の上面と同一面とならない不都合を回避することができる。
以上、本発明の実施形態について説明してきたが、本発明はこれに限定されずに種々の変更、改良を行うことができる。
例えば、キャップ5の材料は合成樹脂を例示しているが、本発明のキャップ5の材質は合成樹脂に限らず、アルミニウム合金や銅合金、鉄鋼等の金属であってもよい。
また、キャップ5の打込み治具としては、ハンマー72以外であってもよい。
更に、座ぐり部41への打込みの際に嵌合部54から発生した異物としては、バリ73以外のもであってもよい。
2 スライダ
11 転動面
21 転動面
22 戻し通路
3 転動体
4 取付け穴
41 座ぐり部
42 軸収容部
5 キャップ
51 テーパ部
52 フランジ部(受部)
52a 第1補強リブ(補強リブ)
52b 第2補強リブ(補強リブ)
52c 第1補強リブ
52d 第2補強リブ
53 バリ格納用溝(異物収容溝)
54 嵌合部
54a 嵌合部の底面
54b 嵌合部の外周面
55 気体排出用溝
6 ボルト
61 ボルトの頭部
62 ボルトの軸部
7 被取付部
7a めねじ部
71 当て板
72 ハンマー(打込み治具)
73 バリ(異物)
Claims (7)
- リニアガイド装置の案内レールに設けた、ボルトの頭部を収容する座ぐり部と前記ボルトの軸部を収容する軸収容部とを備えた取付け穴の、前記座ぐり部を塞ぐキャップであって、前記座ぐリ部に打込み治具によって打込むことにより前記座ぐり部に圧入されて前記座ぐり部を塞ぐリニアガイド装置のキャップにおいて、
前記打込み治具に対して受けとなる受部と、該受部から延び、前記座ぐり部との間にしまりばめになる外径を有するとともに前記座ぐり部に圧入される嵌合部と、該嵌合部の外周に形成されると共に、前記座ぐり部への打込みの際に前記嵌合部から発生した異物を収容する異物収容溝と、前記嵌合部の外周におおいて前記嵌合部が前記座ぐり部に圧入された状態で前記異物収容溝から前記座ぐり部の内部に至るまで延び、前記座ぐり部の内部の気体を前記異物収容溝側に排出する気体排出用溝を備えていることを特徴とするリニアガイド装置のキャップ。 - 前記気体排出用溝は、円筒状に形成された前記嵌合部の外周の円周等配位2ヵ所に形成されていることを特徴とする請求項1記載のリニアガイド装置のキャップ。
- 前記嵌合部に、前記打込みを行う際の前記嵌合部の前記座ぐり部への導入を案内するテーパ部を前記嵌合部の外周面と底面とにかけて形成したことを特徴とする請求項1又は2記載のリニアガイド装置のキャップ。
- 前記気体排出用溝の深さをL、前記嵌合部の外径をφD、前記テーパ部の内径をφdとした場合、前記気体排出用溝の深さLは0<L<(φD-φd)/2の範囲に設定されることを特徴とする請求項3記載のリニアガイド装置のキャップ。
- 前記受部が円板状に形成されるとともに、前記受部の一面に環状の補強リブを設けることを特徴とする請求項1乃至4のうちいずれか一項に記載のリニアガイド装置のキャップ。
- 前記受部が円板状に形成されるとともに、前記受部の一面に、環状の第1補強リブと、前記受部の中心から前記環状の第1補強リブに向かって放射状に延びる第2補強リブとを設けることを特徴とする請求項1乃至4のうちいずれか一項に記載のリニアガイド装置のキャップ。
- ボルトの頭部を収容する座ぐり部と前記ボルトの軸部を収容する軸収容部とを備えた取付け穴が、案内レールに形成されたリニアガイド装置において、
請求項1乃至6のういちいずれか一項に記載のキャップにより前記座ぐり部を塞いでいることを特徴とするリニアガイド装置。
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EP14842465.8A EP3020989B1 (en) | 2013-09-03 | 2014-02-07 | Linear guide device and cap |
CN201480000703.2A CN104603485B (zh) | 2013-09-03 | 2014-02-07 | 线性引导装置的盖体及线性引导装置 |
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- 2014-02-07 WO PCT/JP2014/000679 patent/WO2015033486A1/ja active Application Filing
- 2014-02-07 US US14/912,344 patent/US9771976B2/en active Active
- 2014-02-07 CN CN201480000703.2A patent/CN104603485B/zh active Active
- 2014-02-14 TW TW103104894A patent/TWI557336B/zh active
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US10562140B2 (en) | 2016-01-19 | 2020-02-18 | Thk Co., Ltd. | Press-fitting jig for cover cap of bolt mounting hole |
DE112017000423B4 (de) * | 2016-01-19 | 2021-02-18 | Thk Co., Ltd. | Presspassungsvorrichtung für abdeckkappe eines bolzenanbringungslochs |
CN109210044A (zh) * | 2017-07-05 | 2019-01-15 | 上海汽车集团股份有限公司 | 过孔接插件塑壳安装结构 |
CN109210044B (zh) * | 2017-07-05 | 2023-09-29 | 上海汽车集团股份有限公司 | 过孔接插件塑壳安装结构 |
WO2023199724A1 (ja) * | 2022-04-14 | 2023-10-19 | Thk株式会社 | 取付穴用キャップ及び運動案内装置 |
Also Published As
Publication number | Publication date |
---|---|
EP3020989A4 (en) | 2017-05-10 |
EP3020989A1 (en) | 2016-05-18 |
JPWO2015033486A1 (ja) | 2017-03-02 |
EP3020989B1 (en) | 2019-09-25 |
TW201510382A (zh) | 2015-03-16 |
US20160201721A1 (en) | 2016-07-14 |
CN104603485A (zh) | 2015-05-06 |
CN104603485B (zh) | 2017-03-08 |
TWI557336B (zh) | 2016-11-11 |
JP5958530B2 (ja) | 2016-08-02 |
US9771976B2 (en) | 2017-09-26 |
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