JP2010107303A - Outer joint member measuring apparatus and measuring method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer joint member measuring apparatus and measuring method which stably and accurately performs interior dimension measurement in the part in which axial positions are different, and has superior workability. <P>SOLUTION: The outer joint member to be measured is supported so that its cup part 2 is directed upward, with the axial line of the outer joint member aligned with the vertical axis line. A positioning jig 11 is inserted into the cup part 2 to determine the height position from an interior bottom 2a of the cup part 2 to a position to be measured. The interior dimension of the cup part 2 at the height position determined by the positioning jig 11 is measured. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a measuring device and a measuring method for an outer joint member in a constant velocity universal joint.

  Constant velocity universal joints are used by incorporating them in the power transmission mechanisms of automobiles and various industrial machines. The constant velocity universal joints have two shafts on the drive side and the driven side that can change the crossing angle of each other, and rotate from the drive side. It is connected so that torque can be transmitted to the driven side at a constant speed. These constant velocity universal joints are roughly classified into fixed type constant velocity universal joints that allow only angular displacement and sliding type constant velocity universal joints that allow angular displacement and axial displacement. ing.

  For example, as a fixed type constant velocity universal joint, a bar field type (BJ) and an undercut free type (UJ) are known. These fixed type constant velocity universal joints have a plurality of guides extending in the axial direction in pairs with an outer joint member in which a plurality of guide grooves extending in the axial direction are formed on the spherical inner surface and a guide groove of the outer joint member. An inner joint member having a groove formed on a spherical outer diameter surface, a plurality of torque transmitting balls disposed on a ball track formed by cooperation of both guide grooves of the outer joint member and the inner joint member, and an outer joint member And a cage that is disposed between the inner joint member and holds the torque transmitting ball.

  As the sliding type constant velocity universal joint, a double offset type (DOJ) and a tripod type (TJ) are known. A double offset type sliding type constant velocity universal joint is formed by axially forming a pair of an outer member in which a plurality of axially extending track grooves are formed on a cylindrical inner peripheral surface and a track groove of the outer member. An inner member having a track groove extending on a spherical outer peripheral surface, a plurality of balls for transmitting torque interposed between the track groove of the outer member and the track groove of the inner member, and the outer member A cage for holding a ball interposed between the cylindrical inner peripheral surface and the spherical outer peripheral surface of the inner member is provided as a main component.

  The tripod type constant velocity universal joint has an outer joint member (outer ring) in which three track grooves are formed in the axial direction on the inner peripheral surface and axial roller guide surfaces on both sides of each track groove, and a radial direction. An inner joint member (tripod member) having three leg shafts projecting to the inner surface, and a rolling element (roller) rotatably accommodated between the leg shaft of the inner joint member and the roller guide surface of the outer joint member Is configured as a main member.

  Moreover, the outer ring | wheel which is an outer joint member is generally provided with the cup part in which a track groove is formed. For this reason, the outer shape of the outer ring (outer joint member) of the constant velocity universal joint has various shapes such as a round shape and a flower shape, and the shape and the depth of the cup portion also vary depending on the product number. . Moreover, the cross-sectional shape inside a cup part may not be uniform along an axial direction, and the internal diameter dimension is also changing variously. Therefore, it has been necessary to check the internal dimensions and shape of the cup portion at different positions in the axial direction.

  A cylinder cage may be used as a method for measuring the internal dimensions of such an outer ring. However, when a cylinder gauge is used, conventionally, since it is generally a manual operation, accurate positioning may be difficult due to difficulties such as accurate positioning such as the terminal (contact terminal) being inclined with respect to the contact site. Many. Further, when measuring the inter-groove dimension of the Gothic arch shape, the cylinder gauge cannot cope with it.

  It is also possible to use a three-dimensional measuring device as a measuring device. If a three-dimensional measuring device is used, the measurement accuracy is improved, but the measurement time is significantly increased. For this reason, it is necessary to stop the production line until the measurement result is obtained, which is inferior in productivity.

  Furthermore, conventionally, an internal measurement device for a cup portion of an outer ring of a constant velocity universal joint has been disclosed (Patent Document 1, Patent Document 2, and Patent Document 3).

  The measuring apparatus described in Patent Document 1 includes two arms having measuring elements at end portions, driving means for driving the arms so as to move the measuring elements closer to and away from each other, and a distance between both arms. And detecting means for detecting. In this case, the outer ring is placed on the table in a state where the opening of the cup portion faces downward, and the shaft portion protruding from the bottom portion of the cup portion is gripped by the indexing means. The indexing means includes a clamp portion, and the clamp portion grips the shaft portion of the outer ring. At this time, the center is engaged with a recess provided on the end face of the shaft portion.

Similarly to the apparatus described in Patent Document 1, the measuring apparatuses described in Patent Document 2 and Patent Document 3 are also provided with two arms provided with measuring elements at the ends, and the measuring elements are moved closer to each other by driving the arms. The driving means for swinging away from each other and the detecting means for detecting the distance between both arms are provided. In this case, the outer ring is supported by a work lift mechanism provided on the base in a state where the opening of the cup portion is arranged upward.
Japanese Patent Laid-Open No. 9-210605 JP-A-60-27801 JP-A-60-27803

  However, in the measuring apparatus described in each patent document, in order to measure the internal dimensions at positions different in the axial direction, it is necessary to drive the cylinder mechanism, which makes the entire apparatus large and accurate alignment is required. In addition, the alignment time was long.

  Moreover, in patent document 1, while engaging a center with the recessed part provided in the end surface of the axial part and holding the axial part of an outer ring | wheel, only the thing of a limited shape and a dimension was able to respond | correspond. Further, in the devices described in Patent Document 2 and Patent Document 3, the outer ring is received by the cup-shaped workpiece receiver in a state where the opening of the cup portion is arranged to face upward. In this case, the shaft portion of the outer ring is inserted into the work receiver. For this reason, even the devices described in Patent Document 2 and Patent Document 3 can cope only with limited shapes and dimensions.

  In view of the above problems, the present invention provides a measuring device and a measuring method for an outer joint member that can stably and accurately measure internal dimensions at different positions in the axial direction and that are excellent in workability. To do.

  An outer joint member measuring device according to the present invention is an outer joint member measuring device for measuring the internal dimensions of the cup portion of the outer joint member, and the axis of the outer joint member to be measured is aligned with the vertical axis. Determined by a support base that supports the opening of the cup portion facing upward, a positioning jig that determines the height position from the inner bottom surface of the cup portion to the position to be measured, and the positioning jig. And a measuring jig for measuring the internal dimension of the cup portion at the height position.

  According to the measuring apparatus for an outer joint member of the present invention, the outer joint member to be measured can be supported on the support base in a state where the opening of the cup portion faces upward. In this state, the axis of the outer joint member to be measured is aligned with the vertical axis. With the positioning jig, the height from the inner bottom surface of the cup portion to the position to be measured can be determined. And the internal dimension of the cup part in this determined height position can be measured with a measuring jig.

  The measurement jig includes a pair of measurement bars each having a measurement terminal at a lower end, and a dial gauge connected to one measurement bar, and the measurement terminals of the measurement bar are brought into contact with measurement surfaces facing each other. The internal dimensions of the cup can be measured with a dial gauge.

  In such a measurement jig, the measurement terminals of the pair of measurement bars can be brought into contact with the measurement surfaces facing each other, and the internal dimensions of the cup portion can be measured with the dial gauge in this state.

  The measurement terminal is detachably attached to the measurement bar, and the measurement terminal includes a Gothic arch-compatible terminal that contacts at least the Gothic arch shape, and the Gothic arch-shaped outer joint member has a measurement surface. You may make it attach an arch corresponding | compatible terminal. It is preferable that the measurement terminal is detachably attached to the measurement bar by screwing.

  You may provide the spacer which changes the position which should be measured from the internal bottom face of a cup part. If the spacer is used, the position to be measured can be changed, and the internal dimensions at various height positions can be measured.

  A plurality of types of positioning jigs are provided, and a positioning jig corresponding to the position to be measured can be selected and measured. A plurality of measurement bars having different length dimensions are provided, and the internal dimensions of the cup portion can be measured at a plurality of positions.

  The outer joint member to be measured from the outer periphery side is supported by the support portions arranged at three positions shifted by 120 degrees along the circumferential direction, and the radial positions of the support portions can be adjusted at two positions. The support portion may elastically press the outer diameter surface of the outer joint member at the remaining one location.

  In addition, the outer joint member is supported by the support portion disposed in the opposite direction of 180 ° on the outer peripheral side of the outer joint member, the position of one support portion can be adjusted in the radial direction, and the other support portion is The outer diameter surface of the outer joint member may be elastically pressed.

  In addition, the outer joint member is supported by a support portion disposed on the outer peripheral side of the outer joint member in the opposite direction of 180 °, one support portion is fixed, and the other support portion is elastically attached to the outer joint member. You may press a radial surface.

  You may comprise the said support part in the spherical surface which becomes convex shape at the outer joint member side.

  The measuring method of the outer joint member of the present invention is a measuring method of the outer joint member for measuring the internal dimension of the cup portion of the outer joint member, and the axis of the outer joint member to be measured is aligned with the vertical axis. After supporting so that the opening of the cup portion faces upward, a positioning jig is inserted into the cup portion to determine the height from the inner bottom surface of the cup portion to the position to be measured, and then the positioning The internal dimension of the cup part at the height position determined by the jig for use is measured.

  In the measuring method of the outer joint member of the present invention, the outer joint member to be measured can be supported in a state where the opening of the cup portion faces upward, and in this state, from the inner bottom surface of the cup portion with the positioning jig. The height position up to the position to be measured can be determined. And the internal dimension of the cup part in this determined height position can be measured with a measuring jig.

  According to the present invention, the internal dimension of the cup portion at the height position determined by the positioning jig can be measured by the measuring jig. For this reason, the internal dimension in the height position which should be measured from the internal bottom face of a cup part can be measured stably.

  The measurement terminals of the pair of measurement bars are brought into contact with the measurement surfaces facing each other, and in this state, the internal dimension of the cup portion can be measured with the dial gauge, and the measurement is stabilized.

  By making the measurement terminal a Gothic arch-compatible terminal, it is possible to stably measure even if the measurement surface has a Gothic arch shape.

  When the measurement terminal is detachably attached to the measurement bar by screwing, the measurement terminal can be replaced and the replacement work can be easily performed. If the spacer is used, the position to be measured can be changed, and the internal dimensions at various height positions can be measured.

  Even if it is equipped with a plurality of types of the positioning jig, even if it is equipped with a plurality of measurement bars having different length dimensions, the internal dimensions of the cup portion can be measured at a plurality of positions, Highly accurate product inspection can be performed on one outer joint member (outer ring).

  The outer joint member can be supported at three positions shifted by 120 degrees along the circumferential direction, and the support state is stabilized. In this case, the radial positions of the two support portions that can be adjusted in the radial direction are matched to the outer joint member to be measured, and the outer diameter surface of the outer joint member is pressed by these support portions. At this time, the other one support portion elastically presses the outer diameter surface of the outer joint member. As a result, the outer diameter can correspond to the outer joint member having various sizes.

  The outer joint member can be supported by two support portions disposed in opposite directions of 180 °. In addition, if the position of one of the support portions is adjustable, the radial position of the one support portion is adjusted to the outer joint member to be measured, and the outer diameter surface of the outer joint member is determined by these support portions. The other one support portion can elastically press the outer diameter surface of the outer joint member. Further, if one support portion is fixed, the other support portion is elastically pressed against the outer diameter surface of the outer joint member while the outer diameter surface of the outer joint member is in contact with the one support portion. By doing so, the outer joint member to be measured can be supported.

  By configuring the support portion as a spherical surface that is convex toward the outer joint member, the outer joint member can be supported correspondingly even if the outer diameter surface is an irregular shape other than the cylindrical surface.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2 show a measuring device for an outer joint member, and this measuring device measures the internal dimensions of the outer joint member 1 of a constant velocity universal joint. Here, the outer joint member 1 includes a cup part (mouse part) 2 and a shaft part 4 protruding from the bottom wall of the cup part 2. The outer joint member 1 is an outer ring constituting an outer joint member of a tripod type constant velocity universal joint. For this reason, three track grooves 5 are formed in the axial direction on the inner peripheral surface, and axial guide rollers 6 and 6 are provided on both sides of each track groove.

  This measuring device is used for positioning to determine a height position from a support base 10 for supporting an outer joint member (outer ring) 1 to be measured and an inner bottom surface 2a of a cup portion 2 of the outer joint member 1 to a position to be measured. A jig 11 (see FIG. 6 and the like) and a measuring jig 12 for measuring the internal dimensions of the cup portion 2 at the height position determined by the positioning jig 11 are provided.

  The support base 10 includes a base 13, a receiving tray 14 attached to the base 13, three press mechanisms 15 (15 </ b> A, 15 </ b> B, 15 </ b> C) attached to the base 13 for supporting and fixing the outer ring 1, And a reference plate 16 attached to the upper surface of the base 13. Further, the base 13 includes a base 19 and a support column 17 standing on the base 19.

  The tray 14 is disposed in the support column 17 of the base 13 and is supported by a cushion material (coil spring) 18 so that it can move up and down. That is, the receiving tray 14 is provided with an outer ring receiving flat surface 20 on the upper surface thereof, and a concave portion 21 in which the upper end portion of the cushion material 18 is fitted on the lower surface thereof. The cushion material 18 is received by a receiving body 22 disposed on the lower side of the support column 17.

  At this time, the tray 14 is fixed by fixing screws 24, 24 attached to the column 17, and the receiving body 22 is also fixed by fixing screws 25, 25 attached to the column 17. That is, the tray 14 can be fixed to an arbitrary height position with respect to the support column 17.

  As shown in FIG. 2, the presser mechanisms 15 </ b> A, 15 </ b> B, and 15 </ b> C are arranged at a 120 ° pitch along the circumferential direction. Of the three presser mechanisms 15A, 15B, and 15C, two presser mechanisms 15A and 15B have the same configuration, and the other one has a different configuration.

  The presser mechanisms 15A, 15B are a frame 30 fixed to the support column 17, a screw member 31 screwed into the frame body 30, and a reciprocating movement along the axial direction of the screw member 31 when the screw member 31 is screwed back and forth. And a block body 32.

  The frame 30 is formed of a bottomed rectangular cylinder, and a screw hole 33 is provided in the bottom wall 30a. The screw shaft 31a of the screw member 31 is screwed into the screw hole 33. The screw member 31 includes the screw shaft 31a and a bowl-shaped head portion 31b. The moving block body 32 includes a shaft portion 32a and a support portion 32b provided at the tip of the shaft portion 32a. As shown in FIG. 2, the support portion 32b includes a first tapered surface 35a and a second tapered surface 35b that are inclined toward the outer diameter toward the center, and constitutes a so-called V-shaped receiver. Yes. For this reason, the outer diameter surface of the outer ring 1 (the portion corresponding to one track groove 5) can be pressed by the tip surface 35 of the support portion 32b.

  The pressing mechanism 15 </ b> C includes a frame body 36 fixed to the column 17, an elastic body 37 attached to the frame body 36, and a moving block that presses along the axial direction by the elastic force of the elastic body 37. And a body 38. The frame body 36 is formed of a bottomed rectangular cylinder, and an elastic body 37 made of, for example, a coil spring is accommodated therein. Similar to the moving block body 32, the moving block body 38 includes a shaft portion 38a and a support portion 38b provided at the tip of the shaft portion 38a. As shown in FIG. 2, the support portion 38b includes a first tapered surface 40a and a second tapered surface 40b that are inclined toward the outer diameter side toward the center, and constitutes a so-called V-shaped receiver. Yes. For this reason, the outer diameter surface (the part corresponding to one track groove 5) of the outer ring 1 can be pressed by the front end surface 40 of the support portion 38b.

  The measurement jig 12 includes a dial gauge 50, a support column 51 that supports the dial gauge 50, a base 52 on which the support column 51 is erected, and a pair of measurement bars 55 and 56 provided with a measurement terminal 53 at the lower end. With.

  One measurement bar (first measurement bar) 55 is pivotally attached to a fulcrum part 57 provided on the support column 51 at an intermediate part in the vertical direction, and the displacement amount of the upper end part 58 is the amount of the dial gauge 50. The measurement is performed by contacting the spindle 50a. Further, the lower end portion of the first measurement bar 55 enters the cup portion 2 of the outer ring 1 supported by the support base 10 through the hole portion 52a of the base plate 52 and the hole portion 16a of the reference plate 16. The other measurement bar (second measurement bar) 56 hangs down from the support column 51 through the hole 52a of the base 52 and the hole 16a of the reference plate 16, and is supported by the support base 10. Part 2 is entered. The measurement terminals 53 and 53 of the measurement bars 55 and 56 are arranged in directions opposite to each other by 180 °, set to face outward, and at the same height position.

  As shown in FIG. 5, the positioning jig 11 includes a shaft portion 11a and a flange portion 11b provided continuously with the upper end edge of the shaft portion 11a. A lower end portion (tip portion) of the shaft portion 11 a is a tapered portion 60. In this case, the length dimension A of the shaft part 11a is set to a predetermined length, and the diameter dimension B of the shaft part 11a is set to be sufficiently small so that it can be inserted into the outer ring 1 to be measured. Further, the outer diameter dimension C of the flange portion 11 b is set larger than the inner diameter dimension E of the hole portion 16 a of the reference plate 16. Therefore, as shown in FIG. 6, when the shaft portion 11 a of the jig 11 is inserted into the support base 10 via the reference plate 16, the flange portion 11 b becomes the outer peripheral edge portion of the hole portion 16 a of the reference plate 16. Lock to.

  Next, an internal dimension measuring method using the measuring apparatus configured as described above will be described. First, as shown in FIG. 4, the dial gauge 50 of the measuring jig 12 is adjusted to the exemplary value. In this case, the measurement jig 12 is placed on the model guide 61 including the measurement model 60. Then, the measurement terminals 53 and 53 are brought into contact with the inner diameter surface of the measurement example 60 set to a predetermined reference inner diameter dimension K. Thus, the dimension K is set as a model value of the dial gauge 50.

  Next, as shown in FIG. 6, the end surface 4 a of the shaft portion 4 of the outer ring 1 to be measured is placed on the tray 14. Thereafter, the shaft portion 11a of the jig 11 is inserted into the outer ring 1 to be measured. At this time, the receiving tray 14 is in a state of being lifted via the cushion material 18. In this state, the jig 11 is lowered, the flange portion 11 b is brought into contact with the reference plate 16, and the fixing screws 24 and 24 are tightened. . Thereby, the tray 14 is fixed. In this state, the receiving body 22 is also fixed to the support column 17 at a predetermined height by the fixing screws 25 and 25. Since the length dimension A of the shaft portion 11a of the jig 11 is set to a predetermined value, the height position of the inner bottom surface 2a is predetermined on the cup portion 2 of the outer ring 1 in contact with the end surface 4a of the shaft portion 11a. Maintained in the position.

  Then, by tightening the screw members 31 of the presser mechanisms 15A, 15B, the outer ring 1 is supported by the three support portions 32b, 32b, 38b disposed at a 120 ° pitch along the circumferential direction. At this time, the tightening amount of the screw member 31 of the presser mechanisms 15A and 15B is adjusted so that the axis L of the outer ring 1 and the axis of the support base 10 coincide with each other. The support portion 38b elastically presses the outer diameter surface of the outer ring 1. Therefore, the outer ring 1 is supported by the support portions 32b, 32b, and 38b arranged at a 120 ° pitch along the circumferential direction.

  Thereafter, the jig 11 is taken out from the support base 10, and the measurement jig 12 is set on the support base 10 as shown in FIG. At this time, the dimension from the base 52 to the measurement terminals 53 and 53 of the measurement bars 55 and 56 is constant. For this reason, the dimension S <b> 1 can be determined from the inner bottom surface 2 a to the measurement terminals 53, 53 in the cup portion 2 of the outer ring 1. That is, as shown in FIG. 3, the internal dimension on the line L1 that is separated from the internal bottom surface 2a by the dimension S1 can be measured.

  In this case, since the first measuring bar 55 can swing in the middle in the vertical direction around the fulcrum 57, the dimension between the measuring terminals 53, 53 can be adjusted, and each measuring terminal 53, 53 can be adjusted. Can be brought into contact (contact) with the measurement surface (the guide surfaces 6 and 6 facing the track grooves). In such a state of contact, the spindle 50a of the dial gauge 50 matched to the model value fluctuates in accordance with the dimension between the opposing measurement surfaces, and the measurement between the measurement surfaces can be measured with the dial gauge 50. it can.

  If it is only the measurement of the internal dimension on the line L1, this is completed. However, as shown in FIG. 3, when it is desired to measure the internal dimension on the line L2 separated from the internal bottom surface 2a by the dimension S2, A spacer 65A as shown in FIG.

  The spacer 65A is made of a flat plate having a hole 66 through which the pair of measurement bars 55 and 56 can be inserted, and has a thickness dimension TA of S2-S1. Then, the spacer 65A is placed on the reference plate 16 of the support base 10, and is placed on the measuring jig 12 on the spacer 65A. As a result, the positions of the measurement terminals 53 and 53 of the measurement bars 55 and 56 correspond to the line L2 that is separated from the internal bottom surface 2a by the dimension S2, and the internal dimensions on the line L2 can be measured.

  Further, when it is desired to measure the internal dimension on the line L3 that is separated from the bottom surface 2a by the dimension S3, another spacer 65B is used as shown in FIG. 8 in addition to the spacer 65A. Like the spacer 65B, the spacer 65B is made of a flat plate having a hole 66 through which the pair of measurement bars 55 and 56 can be inserted, and the thickness dimension TB is S3-S2.

  The spacer 65B is placed on the spacer 65A, and is placed on the measuring jig 12 on the spacer 65B. As a result, the positions of the measurement terminals 53 and 53 of the measurement bars 55 and 56 correspond to the line L3 separated from the internal bottom surface 2a by the dimension S3, and the internal dimensions on the line L3 can be measured.

  According to the present invention, the internal dimension of the cup portion 2 at the height position determined by the positioning jig 11 can be measured by the measuring jig 12. For this reason, the internal dimension in the height position which should be measured from the internal bottom face 2a of the cup part 2 can be measured stably.

  The measurement terminals 53 and 53 of the pair of measurement bars 55 and 56 are brought into contact with the measurement surfaces facing each other, and in this state, the internal dimension of the cup portion 2 can be measured with the dial gauge 50, and the measurement is stabilized.

  The measurement terminals 53 and 53 of the pair of measurement bars 55 and 56 may be screwed as shown in FIG. That is, screw holes are provided at the lower ends of the measurement bars 55 and 56. And the measurement terminals 53 and 53 are comprised from the terminal main body 70 and the screw shaft 71 provided in a row by the base end side of this terminal main body 70. FIG. As a result, the screw portions 71 and 71 of the respective measurement terminals 53 and 53 are screwed into the screw holes of the measurement bars 55 and 56.

  As shown in FIG. 11, the terminal body 70 in this case has a so-called bullet shape, and the tip arc portion 70 comes into contact with the roller guide surface 6 of the track groove 5 which is a measurement surface. That is, at the time of measuring the internal dimensions, as shown in FIG. 10, the pair of measurement terminals 53 and 53 come into contact with the roller guide surfaces (measurement surfaces) 6 and 6 facing one track groove 5, and this roller The dimension between the guide surfaces 6 and 6 is measured.

  As shown in FIGS. 12 and 13, when the roller guide surface 6 has a Gothic arch shape, the measurement terminals 53 and 53 are preferably gothic arch corresponding terminals 53A corresponding to the Gothic arch shape. Here, the Gothic arch shape is a shape in which the center positions O of two arcs having a radius R are shifted from each other by a predetermined distance.

  The Gothic arch-compatible terminal 53A also includes a main body 77 and a screw shaft portion (not shown) connected to the base end side of the main body 77. Are also screwed together. And the outer surface of the main-body part 77 is made into the circular arc surface 75 which contacts the two circular arc surfaces 73 and 74 of a Gothic arch shape.

  Thus, by using the measurement terminal 53 as the Gothic arch-compatible terminal 53A, even if the measurement surface has a Gothic arch shape that has been difficult in the past, it is possible to stably measure.

  As shown in FIG. 14, the outer ring 1 can be supported by two support portions 32a and 38b disposed in directions opposite to 180 °. That is, the presser mechanism 15A (15B) and the presser mechanism 15 (15C) may be disposed at positions opposite to each other by 180 °. As the outer ring 1 in this case, the outer diameter surface is cylindrical, eight track grooves 80 are arranged at a 45 ° pitch along the circumferential direction, and the inner diameter surface shape is point-symmetric with respect to the axis. .

  In this case, the radial position may be adjusted to the support portion 32a of the presser mechanism 15A (15B) so that the axis L of the outer ring 1 is aligned with the axis of the support base 10. Even if it is such, the outer ring | wheel 1 can be supported stably.

  Moreover, as shown in FIG. 15, as the presser mechanism 15 (15D), a support portion 82b may be fixed. That is, the presser mechanism 15D includes a shaft portion 82a fixed to the support base 10 and a support portion 82b connected to the shaft portion 82a. As shown in FIG. 2, the support portion 82b includes a first taper surface 83a and a second taper surface 83b whose outer surface is inclined toward the center as shown in FIG. ing.

  Even such a thing can be supported when the outer ring 1 is a tripod type constant velocity universal joint. In other words, the track groove corresponding portion is supported by the pressing mechanism 15D, and the track groove non-corresponding portion 180 ° opposite to the track groove corresponding portion is supported by the press mechanism 15C elastically contacting the outer diameter surface. I will support it.

  Further, as shown in FIG. 16, the support portions 32b and 38b may be configured by a spherical surface 85 whose outer ring side (tip) is convex. That is, the support portions 32 b and 38 b are configured by a convex spherical surface provided at the tip of the shaft portion 32 a of the moving block body 32.

  As described above, if the support portions 32b and 38b are formed of the convex spherical surface 85, the outer joint member can be supported correspondingly even if the outer diameter surface is an irregular shape other than the cylindrical surface. Note that, even in the presser mechanisms 15A, 15B, and 15C shown in FIG. 1, the presser mechanisms 15A and 15C shown in FIG. 14, the presser mechanisms 15C and 15D shown in FIG. It may be provided.

  As the jig 11, a plurality of types having different lengths of the shaft portion 11a may be prepared. In this way, if a plurality of types are arranged, the internal dimensions of the cup portion 2 can be measured at a plurality of positions by replacing the jig 11. Further, a plurality of measurement bars 55 and 56 having different length dimensions may be provided, and the internal dimensions of the cup portion 2 may be measured at a plurality of positions.

  By the way, in the case of the outer ring 1 shown in FIG. 14 and the like, the internal dimensions are measured between the track grooves 80 facing each other or between the inner surfaces facing each other.

  As described above, the embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, as an outer joint member (outer ring) to be measured, a barfield type ( It may be a fixed type constant velocity universal joint such as BJ) or an undercut free type (UJ), or a sliding type constant velocity universal joint such as a double offset type (DOJ) or tripod type (TJ).

  Further, the presser mechanism 15 for supporting the outer joint member is not limited to the one arranged at 120 pitch or 180 ° pitch in the circumferential direction, but four at 90 ° pitch or six at 60 ° pitch. Can be set up. Furthermore, in the above-described embodiment, the support portion elastically presses the outer diameter surface of the outer ring against one presser mechanism 15, but instead of such a presser mechanism 15, the support portion is arranged in the radial direction. It may be displaceable.

  The spacers 65 to be used are not limited to one or two, but can be arbitrarily increased according to the measurement position and the number of measurement positions, and the thickness of each spacer 65 is also the measurement position and the measurement position. Various changes can be made according to the number. The jig 11 to be used is not limited to the shape shown in FIG. 5 or the like. For example, the shaft portion 11a is not a cylindrical body, but a cylindrical body, a prismatic body, a rectangular tube body, or the like. In addition, the flange portion 11b may be an elliptical disk body, a rectangular flat plate body, or the like without using a disk body, or may be a plurality of projecting pieces disposed at a predetermined pitch along the circumferential direction.

It is a simplified front view of the measuring device of the outside joint member which shows the embodiment of the present invention. It is a simplified top view of the said measuring apparatus. It is sectional drawing of the outer joint member which should be measured. It is a schematic diagram which shows the model alignment state using the measurement jig | tool of the said measuring apparatus. It is sectional drawing of the jig | tool for positioning of the said measuring apparatus. It is a simplified diagram showing a positioning state using the positioning jig. It is a simplified diagram showing an internal dimension measurement state using one spacer. It is a simplified diagram showing an internal dimension measurement state using two spacers. It is a simplification figure showing the 1st modification of a measurement terminal. It is sectional drawing of the outer ring | wheel which shows the internal dimension measurement state using the measurement terminal shown in the said FIG. It is a principal part expanded sectional view of the outer ring | wheel which shows the internal dimension measurement state using the measurement terminal shown in the said FIG. It is sectional drawing of the outer ring | wheel which shows the internal dimension measurement state using the measurement terminal of a 2nd modification. It is a principal part expanded sectional view of the outer ring | wheel which shows the internal dimension measurement state using the measurement terminal shown in the said FIG. It is a simplified top view of the measuring apparatus which arrange | positions a presser mechanism in the 180 degree opposite position. It is a simplified top view of the other measuring apparatus which arrange | positions a presser mechanism in a 180 degree opposite position. It is a simplified top view of the other measuring apparatus which arrange | positions a presser mechanism with a 120 degree pitch along the circumferential direction.

Explanation of symbols

2 Cup portion 2a Internal bottom surface 3A Gothic arch-compatible terminal 10 Support base 11 Positioning jig 12 Measurement jig 32a Support portion 38b Support portion 50 Dial gauge 53 Measurement terminal 53A Gothic arch-compatible terminal 55, 56 Measurement bar 65A Spacer 82b Support portion

Claims (12)

A measuring device for an outer joint member that measures the internal dimensions of the cup portion of the outer joint member,
The height of the support base that supports the opening of the cup part so that the opening of the cup part faces upward with the axis of the outer joint member to be measured aligned with the vertical axis, and the position to be measured from the inner bottom surface of the cup part. An apparatus for measuring an outer joint member, comprising: a positioning jig to be determined; and a measuring jig for measuring an internal dimension of the cup portion at a height position determined by the positioning jig.   The measurement jig includes a pair of measurement bars each having a measurement terminal at a lower end, and a dial gauge connected to one measurement bar, and the measurement terminals of the measurement bar are brought into contact with measurement surfaces facing each other. The measuring device for an outer joint member according to claim 1, wherein an internal dimension of the cup portion is measured with a dial gauge.   The measurement terminal is detachably attached to the measurement bar, and the measurement terminal includes a Gothic arch-compatible terminal that contacts at least the Gothic arch shape, and the Gothic arch-shaped outer joint member has a measurement surface. The measuring device for an outer joint member according to claim 2, wherein an arch-compatible terminal is attached.   4. The measuring device for an outer joint member according to claim 2, wherein the measuring terminal is detachably attached to the measuring bar by screwing.   The outer joint member measuring apparatus according to any one of claims 1 to 4, further comprising a spacer that changes a position to be measured from an inner bottom surface of the cup portion.   The outer joint member according to any one of claims 1 to 4, wherein a plurality of types of the positioning jigs are provided, and a positioning jig corresponding to a position to be measured is selected and used. measuring device.   The measuring device for an outer joint member according to any one of claims 1 to 6, comprising a plurality of measurement bars having different length dimensions, and measuring the internal dimension of the cup portion at a plurality of positions. .   The outer joint member to be measured from the outer periphery side is supported by the support portions arranged at three positions shifted by 120 degrees along the circumferential direction, and the radial positions of the support portions can be adjusted at two positions. 8. The measuring apparatus for an outer joint member according to claim 1, wherein the support portion elastically presses the outer diameter surface of the outer joint member at the remaining one place. .   The outer joint member is supported by the support portion disposed in the opposite direction of 180 ° on the outer peripheral side of the outer joint member, and the position of one support portion can be adjusted in the radial direction, and the other support portion is elastic. The outer joint member measuring apparatus according to any one of claims 1 to 7, wherein an outer diameter surface of the outer joint member is pressed against the outer joint member.   The outer joint member is supported by a support portion disposed on the outer peripheral side of the outer joint member in an opposite direction of 180 °, one support portion is fixed, and the other support portion is elastically outer diameter surface of the outer joint member. The outer joint member measuring apparatus according to claim 1, wherein the outer joint member is pressed.   The measuring device for an outer joint member according to any one of claims 8 to 10, wherein the support portion is configured by a spherical surface that is convex toward the outer joint member side. A measuring method of an outer joint member for measuring an internal dimension of a cup portion of an outer joint member,
With the axis of the outer joint member to be measured aligned with the vertical axis, support is made so that the opening of the cup portion faces upward, and then a positioning jig is inserted into the cup portion, and the inner bottom surface of the cup portion is inserted. And measuring the internal dimension of the cup portion at the height position determined by the positioning jig, after measuring the height from the position to the position to be measured.

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