JP3728329B2 - Combined type rolling guide unit - Google Patents

Description

[0001]
[TECHNICAL FIELD OF THE INVENTION]
  The present invention relates to a composite rolling guide having a first track body that can be relatively moved by being inserted into a recess of a casing, and a second track body that can be relatively moved by a guide portion provided at an end of the first track body. Regarding the unit.
[0002]
[Prior art]
In recent years, the development of mechatronics technology has been remarkable. For example, assembly robots are required to expand their applications, and are manufactured from large to small ones. Further, as linear motion rolling guide units, those shown in FIGS. 10, 11 and 12 are known. The linear motion rolling guide unit is placed with the slider 1 straddling the track rail 2 and freely slides through a plurality of rolling elements 7 circulating along the track grooves 4 of the track rail 2. . Track grooves 4 are formed on both side surfaces 3 in the longitudinal direction of the track rail 2. A plurality of attachment holes 15 are formed in the track rail 2 so as to be spaced apart in the longitudinal direction. The track rail 2 is fixed to a mounting base 20 such as a bed, a machine base, or a processing base. A bolt 16 is inserted into the mounting hole 15 formed in the track rail 2, and the track rail 2 is fixed to the mounting base 20 by screwing the bolt 16 into a screw 21 formed in the mounting base 20. Yes. In addition, a plug 13 is inserted into the upper portion of the mounting hole 15 so that dust, moisture, and the like do not enter after the bolt 16 is inserted.
[0003]
The slider 1 is movable relative to the track rail 2 and has a casing 5 in which a track groove 9 is formed at a position facing each track groove 4 of the track rail 2 and a number of tracks that transfer the facing track grooves 4 and 9. A rolling element 7 such as a ball and end caps 6 attached to both ends of the casing 5 are provided. A plurality of screw holes 19 for attaching a slide table or the like are formed in the upper portion of the casing 5. Rail insertion recesses 10 are formed on the lower surfaces of the casing 5 and the end cap 6 so that the casing 5 and the end cap 6 move across the track rail 2. In order to prevent the rolling elements 7 from falling off the casing 5, a holding band 18 is attached to the casing 5 so as to surround a large number of rolling elements 7, and a seal between the track rail 2 and the lower end of the casing 5 is provided. To achieve this, a bottom seal 8 is attached to the bottom surface of the slider 1.
[0004]
The end cap 6 has a claw 22 scooped from the raceway groove 4, which is a load raceway with the track rail 2, and a direction change path 11 that changes the direction of the rolling body 7 for circulation of the rolling body 7. Is formed. Further, a side seal 17 that achieves a seal between the track rail 2 and both longitudinal ends of the slider 1 is attached to the end cap 6, and a lubricant is applied to the sliding surface between the track rail 2 and the slider 1. A grease nipple 23 for supplying is attached. The end cap 6 is attached to both end faces of the casing 5 with screws 25 or the like that are passed through the plurality of attachment holes 24. The rolling element 7 in the load region that travels on the track groove 4 of the track rail 2 is guided to the direction change path 11 formed in the end cap 6, and then formed on the upper part of the casing 5 in parallel with the track groove 9. The large number of rolling elements 7 endlessly circulate in the endless circulation path. Thus, the track rail 2 and the slider 1 are relatively moved by the rolling of the loaded rolling element 7 located between the track groove 9 formed in the slider 1 and the track groove 4 formed in the track rail 2. Can exercise.
[0005]
Conventionally, cross linear bearings are constructed by combining the linear motion rolling guide units, and for example, those shown in FIGS. 13 and 14, those shown in FIG. 15, or those shown in FIGS. 16 and 17 are known. It has been. In each figure, parts having the same function are denoted by the same reference numerals, and redundant description is omitted. In the cross linear bearing shown in FIGS. 13 and 14, the track rail 2 is fixed on the upper surface 31 of the mounting base 20, and the slider 1 slides on the track rail 2. Another slider 1 is attached to the slider 1 via a bracket 26, and another track rail 2 is slidably moved relative to the other slider 1. A support member 27 is fixed to another track rail 2. An attachment means 28 such as a bite, a chuck, and a jig is fixed to the lower end portion of the support member 27, and processing such as processing on a workpiece 29 such as a workpiece fixed on the base 30, or It is configured to perform a process of transporting an object on the base 30 to another place. Further, the cross linear bearing shown in FIG. 15 is provided with a pair of slider 1 and track rail 2 as compared with those shown in FIGS. 13 and 14.
[0006]
Moreover, the cross linear bearing shown in FIG.16 and FIG.17 is the example which uses the table 33, and the slider 1 and the track rail 2 are provided in two pairs, respectively. A pair of track rails 2 is fixed to the side wall surface 32 of the mounting base 20, and a pair of sliders 1 are slidably provided on the track rail 2, and a table 33 is fixed to one surface of the four sliders 1. . Two pairs of sliders 1 are fixed to the other surface of the table 33. The pair of sliders 1 are provided with track rails 2 that slide in the vertical direction (XZ direction). Further, another track rail 2 is fixed to the base 30, and another pair of sliders 1 are slidable on the track rail 2, and a table 34 is fixed to the slider 1. ing. An object to be processed such as a workpiece can be placed on the table 34.
[0007]
For example, in the cross linear bearing disclosed in Japanese Patent Publication No. 54-32888, the guide groove is provided on the upper surface and the lower surface of the bearing main body in a direction crossing each other, and the inner surface of the guide groove is provided. On the upper side, grooves that complement the rolling balls of the loaded ball cut on one railing platform to form four load rails are cut, and on both sides of the groove, feedback rails for the unloaded balls are cut. The four grooves are formed to form four infinite rails, and the balls located in these grooves are supported by the retainers in the rails, and the load balls located in the four load rails are used to It can support load in the direction. Similarly, an XY table composed of cross linear bearings in the XY directions is disclosed in Japanese Patent Publication No. 4-72084.
[0008]
Japanese Patent Publication No. 57-40372 discloses a cross linear bearing unit. The cross linear bearing unit is configured to accurately position the slidable body by linearly sliding the slidable body in the vertical direction and the horizontal direction.
[0009]
[Problems to be solved by the invention]
The conventional cross linear bearing unit described above generally has a table 33 or a bracket 26 mounted on one slider 1 as shown in FIGS. The other slider 1 is attached to the bracket 26. As described above, the conventional cross linear bearing unit requires a mounting member such as a table and a bracket. Therefore, an accumulated error occurs due to the mounting member interposed, and it is difficult to mount with high accuracy. Furthermore, for example, when two axes, that is, two track bodies are orthogonal, how the other track body is fixed to one track body can be fixed at a right angle. Further, when the mounting member is fixed to other parts with bolts or the like, there is a problem that the fixing portion is loosened due to vibration or the like generated by high-speed operation of the apparatus.
[0010]
  Further, as cross linear bearings that do not use a table or a bracket, those disclosed in the above-mentioned publications are known, but these cross linear bearings are rails that extend across one bearing body (slider). It has a guide (track rail),In two parallel planesThis relates to relative movement (see Japanese Patent Publication No. 54-32888 and Japanese Patent Publication No. 4-72084). However, since these cross linear bearings are formed with guide grooves on the upper and lower sides of the slider, the track rail isParallelAlthough it can take a structure extending in a plane, the track rail isSameIt is impossible to take a structure extending in the plane. In other words, these cross linear bearings,differenceRelative movement of two planesIt is a structure that cannot be performed.
[0011]
  In addition, a pair of rails is fixed on a plane in the vertical direction, that is, the YZ direction or the XZ direction, and another pair of rails extending so as to cross the rails can be moved relative to each other (see the above-mentioned JP-B-57-57). No. 40372). However, in the cross linear bearing, as in the above, the positional relationship of the guide grooves formed in the bearing body (slider) is formed on the upper and lower sides of the slider.ParallelAlthough a structure extending in a plane can be taken, the track rail cannot take a structure extending in a plane in the crossing direction. Therefore, in the type in which one track rail is moved in the vertical direction, there is a restriction that the other track rail must be arranged on the side wall surface of the mounting base, and there is a problem that the mounting state lacks stability in terms of weight. . In other words, these cross linear bearings have a pair of track rails thatRelative of two parallel planesCan move, but faces intersectRelative of two planesIt is a structure that cannot be moved.
[0012]
The object of the present invention is preferably applied to a relatively small device such as an assembly robot, a semiconductor assembly device, a transfer device, a machine tool, etc., and in moving an object two-dimensionally from a certain position, Consists of at least a pair of track bodies and one casing to reduce the number of parts to minimize cumulative errors between multiple parts, and to increase a predetermined angle between the track bodies, for example, 90 ° orthogonal It can be set to high accuracy and enables two-dimensional relative movement with high accuracy on the surface where a pair of track bodies intersect with each other. For example, the processing accuracy for a workpiece can be improved, or the workpiece attached to the track body or casing It is an object of the present invention to provide a composite type rolling guide unit capable of accurately and reliably performing processing such as positioning.
[0013]
[Means for Solving the Problems]
  This invention, ConcaveA casing having a first raceway groove on an opposing surface of the first part, a first raceway body in which first raceway grooves are formed on both side surfaces in the longitudinal direction which are inserted into the recesses of the casing and relatively move on one plane. Crossing direction with respect to the plane where the raceway groove extendsPlaneA guide portion provided at an end of the first track body having a second track groove extending to,PreviousRelative movement through the guideAndOn both sides in the longitudinal directionExtends in the plane of the crossing directionA second raceway having a second raceway groove, a rolling element that rolls between the first raceway groove and the second raceway groove, a first end cap disposed on each end face of the casing, and The present invention relates to a composite type rolling guide unit comprising a second end cap disposed on an opposing surface of the end portion of the first track body provided with the guide portion.
[0014]
  Further, in this combined rolling guide unit, the guide portion at the end of the first track body is integrally formed with the first track body.To makeIt is configured. In addition, the first track bodyThe first raceway grooveExtendSaidPlane and second track bodyThe second raceway grooveExtendIn the cross directionThe plane is directlydodgeIs.
[0015]
In addition, side seals are disposed on the end surfaces of the first end cap and the second end cap, respectively, and the first end cap and the second end cap change the rolling direction of the rolling elements. A diversion path has been formed.
[0016]
Furthermore, the second end cap is fixed to a facing surface of the end portion of the first track body or a cut surface obtained by cutting out the facing surface.
[0017]
The casing is fixed to an attachment base, and a support member provided with attachment means for attaching jigs and gripping tool parts is fixed to the second track body. Alternatively, the second track body is fixed to an attachment base, and a support member provided with attachment means for attaching jigs and gripping tool parts is fixed to the casing.
[0018]
Further, the first track body and the second track body are each constituted by a track rail. Alternatively, the first track body is constituted by a track rail, and the second track body is constituted by a spline shaft.
[0019]
  ThisIn the composite type rolling guide unit, a first track body in which first track grooves are formed on both side surfaces in the longitudinal direction is relatively moved on one plane on a casing having the first track grooves, and the first track grooves extend. Crossing direction with respect to the planePlaneWith a second track groove extending toThe guide sectionEnd of the first track bodySet inAnd with respect to the plane on which the first track body relatively moves.SaidExtending in the plane of the crossing directionThe second track grooveBoth sides in the longitudinal directionShapeSince the formed second track body is guided by the guide portion and relatively moves, the first track body and the second track body areOn two intersecting planesRelative movement is possible. In particular, the intersection angle between the first track body and the second track body can be easily and accurately set to a desired angle such as orthogonal (90 °). In other words,Seeing each as a flat surface where the raceway groove extends,The first track bodyAnd the second track body are respectivelyOn the plane in the XY direction, XZ directionOn the planeOr on the plane in the YZ directionEitherWill be moved relative to each other. Therefore, the composite linear motion rolling guide unit can stably fix and support the casing or the second track body on the mounting base, and can reduce the number of parts with respect to two-dimensional relative movement. The accumulated error between the plurality of parts can be reduced to the minimum.
[0020]
[BEST MODE FOR CARRYING OUT THE INVENTION]
  Embodiments of a composite type rolling guide unit according to the present invention will be described below with reference to the drawings. When each embodiment of the composite type rolling guide unit is described with reference to the drawings, the drawings for explaining the embodiments are basically the same as the parts of the conventional apparatus shown in FIGS. Corresponding parts are denoted by the same reference numerals, and redundant description is omitted. As for the composite type rolling guide unit, the embodiment described with reference to the drawings is shown for the composite type linear motion rolling guide unit.
[0021]
With reference to FIG. 1, an embodiment of a composite type rolling guide unit according to the present invention will be described. FIG. 1 is a perspective view showing an embodiment of a composite type rolling guide unit according to the present invention. This composite type rolling guide unit utilizes a linear motion rolling guide unit as shown in FIG. 10, and is composed of at least a pair of track rails 2A, 2B and one casing 5, and has a mounting base (not shown). The track rail 2B moves two-dimensionally through the track rail 2A with respect to the casing 5 fixed to the track 5), or the track rail 2B fixed to the mounting base (not shown) is tracked. The casing 5 can perform two-dimensional plane movement through the rail 2A. In this embodiment, a case where a track rail is used as a track body and the casing 5 is fixed to an attachment base (not shown) will be described. In some cases, a ball spline shaft can be used instead of the track rail 2B, and the casing 5 can be moved two-dimensionally by fixing the track rail 2B to the mounting base.
[0022]
  In this composite linear motion rolling guide unit, a recess is formed in the casing 5 in the longitudinal direction, and a raceway groove 9 is formed on the opposing surface of the recess. The track rail 2A is fitted into the recess of the casing 5 and slides relatively linearly. The track rail 2 </ b> A has track grooves 4 formed on both side surfaces 3 in the longitudinal direction. In the casing 5, a raceway groove 9 is formed at a portion corresponding to a position facing the raceway groove 4. A rolling element (not shown) is incorporated in the raceway formed by the raceway groove 4 of the track rail 2A and the raceway groove 9 of the casing 5 so as to roll. The track rail 2A is inserted into the recess of the casing 5 and linearly moves relative to one another on one plane. One end of the track rail 2A has a crossing direction with respect to the plane in which the track groove 4 extends.PlaneA guide portion 35 is provided in which a raceway groove 9 is formed. The track rail 2B in which the track grooves 4 are formed on both side surfaces 3 in the longitudinal direction is inserted into the guide portion 35 and incorporated so as to move relatively.
[0023]
Further, a rolling element (not shown) is incorporated in the raceway formed by the raceway groove 4 of the track rail 2B and the raceway groove 9 of the guide portion 35 so as to roll. Further, end caps 6 </ b> A are respectively disposed on both end faces of the casing 5. End caps 6 </ b> B are respectively disposed on opposite surfaces of the end portions of the track rail 2 </ b> A provided with the guide portions 35. The end cap 6B is fixed to a notch surface 36 formed by notching opposite surfaces on both side surfaces of the end portion of the track rail 2A, so that the end surface of the end cap 6B is flush with the side surfaces 3 of the track rail 2A. Is formed. Further, side seals 17 are arranged on the end faces of the end cap 6A.
[0024]
  In FIG. 1, the guide part 35 provided in the edge part of the track rail 2A is comprised integrally with the track rail 2A. In some cases, the guide portion 35 is fixed to the end of the track rail 2A.anotherIt can also be configured as a separate structure comprising a casing (not shown). A direction changing path (not shown) for changing the direction of the rolling elements is formed in the end caps 6A and 6B. Further, an attachment means for attaching a tool, a jig, or a gripping tool component can be provided at the end of the track rail 2B.
[0025]
Since the composite linear motion rolling guide unit is configured as described above, the track rail 2B extends in a plane intersecting the plane in which the track rail 2A moves, and the track rail is on the plane. Moves linearly relative to 2A. Therefore, the plane in which the track rail 2A extends and the plane in which the track rail 2B extend are orthogonal to each other and can move relative to each other on the orthogonal plane. Therefore, the track rail 2 </ b> B can perform two-dimensional plane movement with respect to the fixed casing 5. In addition, since this composite linear motion rolling guide unit is composed of three parts, the casing 5 and the track rails 2A and 2B, which move relative to each other, the error generated between the parts is adjusted as small as possible. If this is done, the accumulated error can be reduced. If the planes of the track rail 2A and the track rail 2B are set at, for example, an angle that is orthogonal (90 °), the movement of the track rail 2B with respect to the casing 5 on the plane can be secured extremely accurately and stably, For example, when incorporated in a machine tool, an assembly apparatus, etc., high-precision machining and high-precision positioning can be achieved.
[0026]
Next, another embodiment of the combined rolling guide unit according to the present invention will be described with reference to FIG. Since this embodiment has the same configuration and the same function except that the attachment state of the end cap 6B is different from that of the above-described embodiment, the overlapping description is omitted. In this embodiment, the end caps 6B fixed to the opposite surfaces of the both side surfaces 3 at the end of the track rail 2A are not cut out from the side surfaces 3 at the end of the track rail 6A, and the side surfaces 3 of the track rail 6A are cut out. It is fixed in a state of protruding from.
[0027]
Next, still another embodiment of the composite type rolling guide unit according to the present invention will be described with reference to FIG. Since this embodiment has the same configuration and the same function except that the direction of the track groove formed at the end of the track rail 2A is different from that of the embodiment of FIG. In this embodiment, the formation directions of the track grooves 4 formed on both side surfaces 3 of the track rail 2A and the track grooves 4 formed on the guide portion 35 at the end of the track rail 2A intersect each other. The intersecting state of each track groove 4 intersects perpendicularly (90 °) in FIG. 3, and intersects the direction perpendicular to the direction of the track groove 4 formed in the guide portion 35 of FIG. 1 (90 °). Yes.
[0028]
Next, another embodiment of the composite type rolling guide unit according to the present invention will be described with reference to FIG. Compared with the embodiment of FIG. 2, this embodiment has the same configuration and the same function except that the direction of the track groove formed at the end of the track rail 2A is different, and therefore, a duplicate description is omitted. In this embodiment, the formation directions of the track grooves 4 formed on both side surfaces 3 of the track rail 2A and the track grooves 4 formed on the guide portion 35 at the end of the track rail 2A intersect each other. The intersecting state of each track groove 4 intersects perpendicularly (90 °) in FIG. 4, and intersects the direction perpendicular to the direction of the track groove 4 formed in the guide portion 35 of FIG. 2 (90 °). Yes.
[0029]
  FIG. 5 and FIG. 6 show an embodiment of the installation state of this combined type rolling guide unit. In this embodiment, the casing 5 is fixed on the side surface 32 of the mounting base 20, and the track rail 2 </ b> A inserted through the recess of the casing 5 slides. In order to stably support the track rail 2 </ b> A, a pair of casings 5 are fixed to the mounting base 20. A guide portion 35 is formed at the end of the track rail 2A. The guide portion 35 is provided so that another track rail 2B can slide. Therefore, the track rail 2B is fixed to the fixed casing 5.TwoDimensional movement is possible. A support member 27 is fixed to the track rail 2B. An attachment means 28 for attaching a tool, chuck, jig, or workpiece is fixed to the lower end of the support member 27. The workpiece 29 such as a workpiece fixed on the base 30 is processed by a tool or the like of the attachment means 28, or a chuck is provided at the lower end of the support member 27 to separate the object on the base 30. The process etc. which are conveyed to this place can be performed.
[0030]
FIG. 7 shows another embodiment of the installation state of the composite rolling guide unit. In this embodiment, a pair of track rails 2 </ b> B are fixed on the mounting base 20. Guide portions 35 are provided at both ends of the track rail 2A. The track rail 2A extends between the track rails 2B, and a guide portion 35 provided on the track rail 2A is fitted into and slides on the track rail 2B so that the track rail 2A can slide on the track rail 2B. The casing 5 slidably moves on the track rail 2A while straddling the track rail 2A. Therefore, the casing 5 can move two-dimensionally on a plane with respect to the fixed track rail 2B. If an attachment means for attaching a cutting tool, a chuck, a jig, or an object to be processed is fixed to the casing 5, the object to be processed fixed on the base by the attachment means can be processed.
[0031]
  FIG. 8 and FIG. 9 show still another embodiment of the installation state of this composite type rolling guide unit. In this embodiment, the casing 5 is fixed on the upper surface 31 of the mounting base 20, and the track rail 2 </ b> A slides on the casing 5. In order to stably support the track rail 2 </ b> A, a pair of casings 5 are fixed to the mounting base 20. A guide portion 35 is formed at the end of the track rail 2A. The guide portion 35 is provided so that another track rail 2B can slide. Therefore, the track rail 2B is fixed to the fixed casing 5.TwoDimensional movement is possible. A support member 27 is fixed to the track rail 2B. An attachment means 28 for attaching a tool, chuck, jig, or workpiece is fixed to the lower end of the support member 27. The workpiece 29 such as a workpiece fixed on the base 30 is processed by a tool or the like of the attachment means 28, or a chuck is provided at the lower end of the support member 27 to separate the object on the base 30. The process etc. which are conveyed to this place can be performed.
[0032]
The composite type rolling guide unit according to the present invention has been described as the composite type linear motion rolling guide unit in each of the above embodiments. However, in some cases, the track body is formed into a curved shape without forming the track body into a linear shape. It can be configured as a curved rolling guide unit that guides curved surfaces, and can also be configured as an infinite rolling guide unit that guides infinite circulation by forming the track body as an endless track body, or it can slide limitedly. It can also be configured as a finite sliding rolling guide unit.
[0033]
【The invention's effect】
  The composite rolling guide unit according to the present invention is configured as described above and has the following effects. That is, this combined type rolling guide unit can be composed of at least a pair of track bodies and one casing. The first track body is relatively moved on one plane on the casing, and the first track body moves on a plane on which the first track body moves. forIn the direction in which the raceway groove extendsSince the second track body is configured to relatively move on the plane in the intersecting direction, two-dimensional relative movement is possible on the plane where the second track bodies cross each other with respect to the casing. The intersection angle between the first track body and the second track body can be easily and accurately set to an orthogonal angle, for example. For example, when the first track body relatively moves on the plane in the XY direction, the second track body relatively moves on the plane in the XZ direction or the YZ direction. The composite linear motion rolling guide unit can stably fix and support the casing or the second track body on the mounting base, and reduce the number of parts for two-dimensional movement. Thus, the accumulated error between the plurality of parts can be reduced to the minimum.In addition, if the first track body and the second track body are single, it can be seen as a configuration that crosses on the same plane and can be relatively moved. In a configuration in which a plurality of the composite type rolling guide units are used, the planes intersect with each other.
[0034]
The guide portion provided at the end portion of the first track body can be configured integrally with the first track body, and in this case, an accumulated error can be reduced. In particular, since each track groove formed on both side surfaces and end surfaces of the first track body can be machined with high accuracy, the angle of intersection between the first track body and the second track body can be set, for example, It can be easily and accurately set to an orthogonal angle, and when assembling the casing, the first track body, and the second track body, it eliminates the need for reference, positioning, etc., and can reduce the installation space in a compact manner and is highly accurate And the occurrence of a bending moment between the first track body and the second track body with respect to the casing can be avoided. For example, the first track body and the second track body are highly accurate. Can be orthogonal. For example, when two-dimensional movement in a vertical plane is performed by a composite rolling guide unit, the track body is fixed to the vertical base wall surface in the conventional one, so that the total weight is applied to the fixing tool for fixing the track body. A large bending moment is generated, which is not preferable in terms of strength. However, in this combined type rolling guide unit, the fixed plane and the moving plane intersect with each other. Therefore, if the fixed plane is set on the horizontal plane side, the above bending moment can be avoided. Therefore, when the first track body relatively moves on the casing in the XY direction, the second track body can relatively move on the XZ direction or YZ direction plane with high accuracy.
[0035]
This combined type rolling guide unit can stably fix and support the casing or the second track body on the mounting base, and reduce the number of parts for two-dimensional movement, thereby reducing the number of parts. Can be reduced to a minimum. In particular, a track groove intersecting each other is formed in the first track body in which the guide portion is configured as an integral structure, and the first track body and the second track body formed with the track grooves are moved relative to each other. Since it is built in, the accumulated error can be reduced. Therefore, this combined linear motion rolling guide unit can be configured in a compact and simple structure, and the number of fixing parts such as bolts can be reduced to a minimum, and a phenomenon of loosening due to vibration during high speed operation or the like occurs. Can be avoided as much as possible, and high accuracy can be ensured over a long period of time.
[0036]
  Alternatively, in this combined rolling guide unit, the guide portion provided at the end of the first track body is fixed to the end of the first track body.anotherIt is also possible to constitute a separate structure composed of a casing, in which case it can be easily replaced with another one when the guide portion is damaged, and the first track body itself needs to be replaced. Since there is no, running cost can be reduced.
[0037]
The end cap fixed to the guide portion may be configured to be directly fixed to the opposing surface of the end portion of the first track body. This can be achieved by fixing to the notched surface. When the end cap is directly fixed to the opposing surface of the end portion, the shape can be simplified, the attachment can be facilitated, and the processing cost can be reduced. In addition, when the end cap is fixed to the notch surface, the surfaces of the first track body and the end cap can be formed on the same plane, and interference with other components can be avoided.
[0038]
The casing may be fixed to an attachment base, and a support member provided with attachment means for attaching components such as a jig, a tool, and a gripping tool to the second track body may be fixed. Alternatively, the second track body may be fixed to an attachment base, and a support member provided with attachment means for attaching components such as a jig, a tool, and a gripping tool to the casing may be fixed. Therefore, in this combined linear motion rolling guide unit, the support member may be selected according to the device to which it is applied, but in some cases, the end of the track rail or spline shaft is not provided. The attachment means may be directly attached to the. In addition, the first track body and the second track body may each be configured by a track rail, or one of the first track body and the second track body is configured by a track rail, and the other is You may comprise with a spline shaft. The track rail or spline shaft may be selected according to the device to be applied, and the degree of freedom in design is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a composite type rolling guide unit of the present invention.
FIG. 2 is a perspective view showing another embodiment of the composite type rolling guide unit of the present invention.
FIG. 3 is a perspective view showing still another embodiment of the composite type rolling guide unit of the present invention.
FIG. 4 is a perspective view showing another embodiment of the composite type rolling guide unit of the present invention.
FIG. 5 is an explanatory view showing an example of an installation state of the composite rolling guide unit.
6 is a side view of FIG. 5. FIG.
FIG. 7 is an explanatory diagram showing another example of the installation state of the combined rolling guide unit.
FIG. 8 is an explanatory view showing another example of the installation state of the combined rolling guide unit.
9 is a side view of FIG. 8. FIG.
FIG. 10 is a partially broken perspective view showing an example of a conventional linear motion rolling guide unit.
11 is a front view of an end cap of the linear motion rolling guide unit of FIG.
12 is a cross-sectional view of a mounting portion between a track rail and a mounting base of the linear motion rolling guide unit of FIG.
FIG. 13 is an explanatory view showing an example of a conventional cross linear bearing.
14 is a side view of FIG. 13. FIG.
FIG. 15 is an explanatory view showing another example of a conventional cross linear bearing.
FIG. 16 is an explanatory view showing still another example of a conventional cross linear bearing.
17 is a side view of FIG. 16. FIG.
[Explanation of symbols]
2A Track rail (first track)
2B Track rail (second track)
3 Side of track rail
4,9 Track groove
5 Casing
6A, 6B End cap
7 Rolling elements
17 Side seal
20 Mounting base
28 Mounting means
35 Guide section
36 Notched surface

Claims (9)

A casing having a first raceway groove on the opposing surface of the recess, a first raceway body in which first raceway grooves are formed on both side surfaces in the longitudinal direction that are inserted into the recess of the casing and relatively move on one plane. guide portion provided at an end portion of the first raceway member having a second raceway groove extending in a plane in the transverse direction to the plane in which the raceway groove extends, is inserted before Symbol guide section move relatively and longitudinally A second raceway having a second raceway groove extending on a plane in the intersecting direction on both side surfaces, a rolling element rolling between the first raceway groove and the second raceway groove, respectively, on both end faces of the casing; A composite type rolling guide unit comprising: a first end cap disposed in each case; and a second end cap disposed on an opposing surface of the end portion of the first track body provided with the guide portion. . Wherein the guide portion of the end portion of the first raceway member, the composite-type rolling guide unit according to claim 1, characterized in that it is integrally formed structure to the first track member. In claim 1 and the cross direction of the plane of the second raceway groove of the second raceway member and the plane in which the first raceway groove of the first track member extends extends is characterized by Rukoto mutually straight exchange The combined rolling guide unit described.   A side seal is disposed on each end face of the first end cap and the second end cap, and the first end cap and the second end cap change the rolling direction of the rolling element. The composite type rolling guide unit according to claim 1, wherein:   2. The combined rolling guide according to claim 1, wherein the second end cap is fixed to the facing surface of the end portion of the first track body or a notched surface formed by cutting the facing surface. unit.   2. The composite mold according to claim 1, wherein the casing is fixed to an attachment base, and a support member provided with attachment means for attaching a jig or a gripping tool component is fixed to the second track body. Rolling guidance unit.   2. The composite mold according to claim 1, wherein the second track body is fixed to a mounting base, and a support member provided with mounting means for mounting jigs and gripping tool parts is fixed to the casing. Rolling guidance unit.   2. The combined rolling guide unit according to claim 1, wherein each of the first track body and the second track body is configured by a track rail.   2. The combined rolling guide unit according to claim 1, wherein the first track body is configured by a track rail, and the second track body is configured by a spline shaft.

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