JP2012170987A - Bearing inner and outer ring separator and method for manufacturing bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing inner ring and outer ring separator which can separate an inner ring member and an outer ring member of a bearing from the inner and outer ring integrated member with a small pressurizing pressure, and to provide a method for manufacturing the bearing.SOLUTION: The bearing inner ring and outer ring separator has: a die 11 in which a through-hole 111 is formed of which the diameter is about the same as the inner diameter of the outer ring of the bearing or the outer diameter of the inner ring of the bearing, and in which the inner and outer ring integrated member W is set; a punch 12 which has a diameter smaller than the inner diameter of the through-hole 111 of the die 11, being inserted and pulled in and out of the through-hole 111 of the die 11 by being moved up and down by a hydraulic cylinder, and separates the inner ring member and the outer ring member from the inner ring and outer ring integrated member W; and a swing mechanism 13 which swings the die 11 so that the outer peripheral edge of the upper surface 11a of the die 11 sequentially moves up and down along the shaft center CL of the punch 12 as a center in the state that the upper surface 11a of the die 11 is inclined to the shaft center CL of the punch 12, while the punch 12 descends, then contacts and presses the inner and outer ring-integrated member W set in the die 11.

Description

  The present invention relates to a bearing that separates an inner ring member and an outer ring member of a bearing from an inner and outer ring integrated member formed by stacking an outer ring and an inner ring of a bearing formed by cutting steel bars at predetermined intervals and formed by upsetting or cutting. The present invention relates to an inner / outer ring separation device and a bearing manufacturing method.

  In a conventional bearing inner / outer ring separating device, for example, a bar material (steel bar) is cut at a predetermined interval, and an inner / outer ring integrated member formed by stacking an outer ring and an inner ring of a bearing formed by upsetting, drawing, or the like is punched. The inner ring member and the outer ring member of the bearing are separated by punching with a machine (see, for example, Patent Documents 1 to 5). Thereafter, if necessary, the inner ring member and the outer ring member are re-formed, and then the inner ring member and the outer ring member separated from the inner and outer ring integrated members by turning are turned by a turning device or a turning line. The inner ring and the outer ring are manufactured.

JP 2004-290983 A JP 2003-154432 A Japanese Patent Application Laid-Open No. 7-035153 JP 7-054851 A JP 7-048552 A

  However, in the conventional bearing inner and outer ring separation devices described in Patent Documents 1 to 5, since the inner and outer ring integrated members having a shape in which the outer ring and the inner ring of the bearing are stacked are punched by a punching machine, There is a problem that it becomes a rupture, and an excessive load is required in the punching process, and a large noise is generated.

  Therefore, an object of the present invention is to provide a bearing inner / outer ring separation device and a bearing manufacturing method that can separate an inner ring member and an outer ring member of a bearing from an inner / outer ring integrated member with a small pressing pressure.

In order to solve the above-mentioned problems, the bearing inner / outer ring separation device of the present invention is an inner / outer ring integrated member having a shape in which steel bars are cut at predetermined intervals and the outer ring and inner ring of the bearing formed by upsetting, drawing, or the like are stacked. A bearing inner / outer ring separating device for separating an inner ring member and an outer ring member of a bearing from a die in which a hole smaller than an outer diameter of the inner / outer ring integrated member is formed, and the inner / outer ring integrated member is set; A punch having an outer diameter smaller than the inner diameter of the die punching hole, vertically moved and inserted into the die punching hole, and separating the inner ring member and the outer ring member of the bearing from the inner and outer ring integral member; and the punch In a state where the upper surface of the die is inclined with respect to the axis of the punch when the punch is pressed against the inner and outer ring integrated member set on the die, and Outer peripheral edge of the die around the axis of the serial punch so that sequentially moves up and down, a bearing inner and outer rings separating apparatus wherein a, a swing mechanism for swinging the dies.
Here, the swing mechanism unit supports the swing case having a bottom surface and a bottom surface of the swing case via a thrust bearing while the die is fixed to the upper surface, and the case support inclined surface of the punch A tilt plate that is tilted about an axis, and the tilt plate is rotated with the case support slope of the tilt plate tilted by rotating the tilt plate about the axis of the punch. A spindle for swinging the die and a drive motor for rotating the spindle through a rotational torque transmission unit may be provided so that the outer peripheral edge of the die moves up and down sequentially.
The swing case has a hemispherical side surface in which the upper half and the lower half are cut from the sphere between the upper surface and the bottom surface, and the swing mechanism portion further includes the swing Matches the shape of the hemispherical side surface of the case, makes spherical contact with the hemispherical side surface of the swing case, and supports the swing case so that it can rotate in any direction from below. You may make it have the rocking | swiveling case support part which has the said rocking | swiveling case support surface supported so that a movement is possible.
Further, in order to solve the above-mentioned problems, the bearing manufacturing method of the present invention includes an inner / outer ring integrated member having a shape in which a steel bar is cut at a predetermined interval and the outer ring and inner ring of the bearing formed by upsetting, drawing, or the like are stacked. An inner / outer ring integral member molding step, and the inner / outer ring integral member is set in a die having a smaller hole diameter than the outer diameter of the inner / outer ring integral member, and the punch has an outer diameter smaller than the inner diameter of the die hole. When the punch hits and presses the inner ring member of the inner and outer ring integrated member, the upper surface of the die is inclined with respect to the axis of the punch, and the punch is centered on the axis of the punch. An inner and outer ring separation step of swinging the die so that the outer peripheral edge of the die moves up and down sequentially, and separating the inner ring member and the outer ring member of the bearing from the inner and outer ring integral member. A bearing manufacturing method according to claim.

  In the bearing inner / outer ring separation device and the bearing manufacturing method according to the present invention, when the punch is lowered and the punch hits and presses against the inner / outer ring integrated member set on the die, the upper surface of the die is inclined with respect to the axis of the punch. In this state, the inner ring member and the outer ring member of the bearing are separated from the inner and outer ring integrated member by swinging the die so that the outer peripheral edge of the die moves up and down sequentially around the axis of the punch. Rather than a single break that receives shearing force from the whole die at once as in the past, the upper peripheral edge of the swinging die's punching hole sequentially contacts the back side of the inner / outer ring integral member sequentially in a pressurized state. It breaks. As a result, according to the present invention, the inner ring member and the outer ring member of the bearing can be separated from the inner / outer ring integrated member with a small press pressure and reduced noise.

It is a fragmentary sectional view showing the example of composition of the whole bearing inner and outer ring separation device of this embodiment, and the section of the principal part. It is an expanded sectional view which expands and shows the cross section of the principal part of the bearing inner / outer ring separation device of this embodiment shown in FIG. It is a top view which shows the part of the base in the bearing inner-and-outer ring separation apparatus of this embodiment shown in FIG. (A), (b) is a sectional view and a perspective view, respectively, of an example of an inner / outer ring integrated member W which is a workpiece to be processed by the bearing inner / outer ring separation device of the present embodiment. (A)-(e) is a figure which shows the height fluctuation | variation with the time passage in each of 4 points | pieces for every 90 degree | times on a dice, and each of those 4 points | pieces, respectively. It is an expanded sectional view which expands and shows the cross section of the principal part of the bearing inner-outer ring separation device of this embodiment when the inclined plate is rotated 180 degrees from the state shown in FIG.

  Next, an embodiment of a bearing inner / outer ring separation device and a bearing manufacturing method according to the present invention will be described with reference to the drawings.

  FIG. 1 is a partial cross-sectional view showing a configuration example of the entire bearing inner / outer ring separation device of the present embodiment and a cross section of the main portion thereof, and FIG. 2 is a cross section of the main portion of the bearing inner / outer ring separation device of the embodiment shown in FIG. FIG. 3 is a plan view of the base portion of the bearing inner / outer ring separation device of the embodiment shown in FIG. 1 as viewed from above.

  The bearing inner / outer ring separation device 1 of the present embodiment cuts a steel bar at a predetermined interval, and forms an outer ring of the bearing from the inner / outer ring integrated member W having a shape in which the outer ring and the inner ring of the bearing formed by upsetting, drawing, or the like are stacked. The member W1 and the inner ring member W2 are separated, and as shown in FIGS. 1 to 3, a die 11, a punch 12, a swing mechanism 13, a pressure piston 14, a hydraulic cylinder 15, and a base 16. In the figure, reference numeral 17 denotes a tie rod (tie rod) that connects the hydraulic cylinder 15 and the base 16.

  The die 11 is formed with a hole 111 having a diameter substantially the same as the inner diameter of the outer ring member W1 of the inner / outer ring integrated member W or the outer diameter of the inner ring member W2, and the inner / outer ring integrated member W is set therein. In the bearing inner / outer ring separation device 1 of the present embodiment, the outer ring member W1 and the inner ring member W2 are separated from the inner / outer ring integrated member W, and the inner and outer rings of the thrust bearing, the inner and outer rings of the radial bearing, and further the tapered bearing. Manufactures inner and outer rings of various bearings such as inner and outer rings.

  The punch 12 has a cylindrical shape having an outer diameter smaller than the inner diameter of the punched hole 111 of the die 11, and moves up and down in parallel with the axial center CL of the punch 12 to enter or leave the punched hole 111 of the die 11. Thus, the outer ring member W1 and the inner ring member W2 of the bearing are separated from the inner / outer ring integrated member W. The tip portion of the punch 12 is perpendicular to the axial center CL of the punch 12.

  When the punch 12 is lowered by the hydraulic cylinder 15 and the punch 12 hits and presses the inner and outer ring integrated member W set on the die 11, the swing mechanism 13 moves the upper surface 11 a of the die 11 to the axis of the punch 12. The die 11 is swung so that the outer peripheral edge of the upper surface 11a of the die 11 moves up and down sequentially around the axis CL of the punch 12 while being inclined with respect to the center CL. Specifically, as shown in FIG. 1 and the like, the swing mechanism portion 13 includes a swing case 131, a swing case support portion 132, an inclined plate 133, a hollow spindle 134, and a rotational torque transmission portion 135. , Drive motor 136, thrust bearings 137 and 138, and radial bearing 139.

  As shown in FIG. 2, the swing case 131 is for fixing the die 11 in a recess 131a1 formed on the upper surface 131a thereof, and has a bottom surface 131b parallel to the upper surface 131a. In the bearing inner / outer ring separation device 1 according to the present embodiment, the swing case 131 includes a hemispherical hemispherical side surface 131c between the upper surface 131a and the bottom surface 131b. Have Further, in the bearing inner / outer ring separation device 1 of the present embodiment, the outer peripheral edge of the upper surface 131a of the swing case 131 is formed with a recess 131a1 that is recessed once along the outer periphery. Then, the swinging swinging case 131 hits the lower surface of the slipping prevention plate 132b fixed along the periphery of the upper end of the swinging case support surface 132a of the swinging case support 132, which will be described later, and prevents the swinging swinging case 131 from slipping out. . In the present invention, it is arbitrary to provide the swing case 131 with the hemispherical side surface 131c and the recess 131a1, and in short, the swing case 131 supporting the die 11 may be supported swingably. .

  The swing case support 132 is fixed to the base 16 and has a hemispherical shape in which the upper half or more and the lower part are cut from a sphere that substantially matches the shape of the hemispherical side surface 131c of the swing case 131. The movable case support surface 132a has a spherical contact with the hemispherical side surface 131c of the swing case 131, and the swing case 131 to which the die 11 is fixed is supported swingably about the axis CL of the punch 12. Is a thing

  The inclined plate 133 is fixed to the hollow spindle 134, and rotates about the axis CL of the punch 12 by transmission of rotational torque from the drive motor 136 via the rotational torque transmission unit 135, and has a predetermined inclination angle β. And a case support slope 133a which is inclined at. The bottom surface 131b of the swing case 131 is supported by the case support slope 133a via the thrust bearing 137. Therefore, the inclined plate 133 swings the die 11 and the upper surface 131a of the swinging case 131 that fixes the die 11 as shown in FIG. Here, in the bearing inner / outer ring separation device 1 of the present embodiment, the inclination angle β formed by the upper surface 11a of the die 11 or the upper surface 131a of the swinging case 131 with respect to the surface perpendicular to the axis CL of the punch 12, that is, the shear angle β Is in the range of about 0.5 to 5.0 degrees, for example, 2.5 degrees. In the present invention, it is only necessary to be able to swing the swing case 131 that supports the die 11. Therefore, the upper surface of the tilt plate 133 is not a case support slope 133a tilted at a predetermined tilt angle β, but a convex portion or Needless to say, the swing case 131 that is formed with a recess, a curved surface, and the like and that supports the die 11 by rotation or the like may be swung.

  The hollow spindle 134 is a hollow cylindrical spindle whose bottom surface is fixed to the upper surface of the inclined plate 133. The hollow spindle 134 is centered on the axis CL of the punch 12 by the rotational torque from the drive motor 136 via the rotational torque transmission unit 135. It is rotated and transmitted to the inclined plate 133. The circular belt-like lower surface 134a of the upper end portion 134a of the hollow spindle 134 is supported by the base 16 so as to be rotatable in a plane perpendicular to the axis CL of the punch 12 via a thrust bearing 138. An outer peripheral side surface 134 a 2 of the upper end portion 134 a of the 134 is supported by a circular inner wall 132 c of the swing case support portion 132 via a radial bearing 139.

  The rotational torque transmission unit 135 transmits rotational torque from a rotational shaft (not shown) of the drive motor 136 to the hollow spindle 134 by a known mechanism such as a belt or a gear.

  The drive motor 136 transmits a rotational torque to the inclined plate 133 via the rotational torque transmission unit 135 and the hollow spindle 134 by rotating a rotating shaft (not shown), and the inclined plate 133 is punched 12. Is rotated around the axis CL. As a result, the case supporting slope 133a of the inclined plate 133 is swung, and the upper surface 11a of the die 11 is swung as shown in FIG. 5, which will be described later, via the case supporting slant 133a and the thrust bearing 137. is there.

  The pressurizing piston 14 is moved up and down by a hydraulic cylinder 15, and the punch 12 fixed to the tip of the pressurizing piston 14 is inserted into or extracted from the punching hole 111 of the die 11 with a predetermined pressure. is there.

  4A and 4B are a cross-sectional view and a perspective view, respectively, of an example of an inner / outer ring integrated member W that is a workpiece to be processed by the bearing inner / outer ring separation device 1 of the present embodiment.

  As shown in FIG. 4, the bearing inner / outer ring separation device 1 according to the present embodiment includes an inner ring / outer ring integrated member W having a shape obtained by stacking an outer ring member W1 and an inner ring member W2 that are the base of the outer ring and inner ring of the bearing. And The inner / outer ring integrated member W can be manufactured by a known inner / outer ring integrated member forming process, for example, by cutting a bar steel at a predetermined interval and setting it up or cutting.

  In the bearing inner / outer ring separation device 1 of this embodiment, an inner / outer ring integrated member W as shown in FIG. 4 is used as a workpiece to be processed, and an outer ring member W1 and an inner ring member W2 of the bearing are connected to the punch 12 5 swings the die 11 as shown in FIG. 5 while the upper surface 11a of the die 11 is inclined with respect to the axial center CL of the punch 12 when the inner and outer ring integrated members W set on the die 11 are pressed. By doing so, the inner periphery of the die 11, that is, the circumferential direction along the upper edge of the punched hole 111 is sequentially broken.

  Next, swinging of the die 11 and the upper surface 131a of the swinging case 131 for fixing the die 11 by the bearing inner / outer ring separation device 1 of the present embodiment will be described with reference to the drawings.

  FIG. 5A is a diagram showing, for example, four points 11p1 to 11p4 every 90 degrees on the upper surface 11a of the die 11. FIGS. 5B to 5E are times at the four points 11p1 to 11p4, respectively. It is a figure which shows the height fluctuation | variation accompanying progress.

  That is, as shown to Fig.5 (a), on the outer periphery of the upper surface 11a of the dice | dies 11, for example, four points 11p1-11p4 for every 90 degree | times are taken. Further, as shown in FIGS. 5B to 5E, the horizontal axis represents time t, and the vertical axis represents the height h with reference to the axis CL of the punch 12. The minimum time interval of the time t on the horizontal axis is ts, and the time from t1 to t5 is scaled for each ts, and one cycle of the swing of the die 11 is 4 × ts. Further, the maximum height of the four points 11p1 to 11p4 on the upper surface 11a of the die 11 at the time of swinging is hm, and the minimum height is −hm.

  Then, the rotation of the hollow spindle 134 and the inclined plate 133 around the axis CL of the punch 12 also rotates the inclined plate 133 inclined at a predetermined inclination angle β, and the case supporting inclined surface of the rotating inclined plate 133 is rotated. It is assumed that the die 11 is swung by 133a and the heights of the four points 11p1 to 11p4 change in order in the α direction, for example. Of course, it is of course possible that the four points 11p1 to 11p4 increase in order in the direction opposite to the α direction.

  Specifically, in the case of a point 11p1 at an angle of 0 degree on the upper surface 11a of the die 11, as shown in FIG. 5B, at the first time t0, if it is at the maximum height hm, at time t1 The height is 0, the minimum height is -hm at time t2, the height is 0 at time t3, the maximum height is hm at time t4, and the above oscillation is repeated at 4 × ts.

  On the other hand, in the case of a point 11p2 at an angle of 90 degrees on the upper surface 11a of the die 11, the phase is shifted by 90 degrees from the point 11p1 at an angle of 0 degrees, so as shown in FIG. When the height is 0, the minimum height is -hm at time t1, the height is 0 at time t2, the maximum height hm at time t3, and the height 0 at time t4. Repeat the movement.

  Further, the point 11p3 at an angle of 180 degrees on the upper surface 11a of the die 11 is 180 degrees out of phase with the point 11p1 at an angle of 0 degrees, so that it is minimum at the first time t0 as shown in FIG. The height is -hm, the height is 0 at time t1, the maximum height is hm at time t2, the height is 0 at time t3, and the minimum height is returned to -hm at time t4. repeat.

  Furthermore, in the case of a point 11p4 at an angle of 270 degrees on the upper surface 11a of the die 11, the phase is shifted by 270 degrees from the point 11p1 at an angle of 0 degrees. Therefore, as shown in FIG. When the height is 0, the maximum height is hm at time t1, the height is 0 at time t2, the minimum height is -hm at time t3, the height is returned to 0 at time t4, and the above oscillation is repeated at 4 × ts.

  FIG. 6 is an enlarged cross-sectional view showing an enlarged cross section of the main part of the bearing inner / outer ring separation device 1 of the embodiment when the die 11 and the inclined plate 133 are rotated 180 degrees from the state shown in FIG. 2.

  That is, for example, as shown in FIG. 5B, at time t0, the point 11p1 on the upper surface 11a of the die 11 is at the maximum height hm, and as shown in FIG. 2, the upper surface 11a of the die 11 on the right side in the drawing. It is assumed that the upper surface 131a of the swing case 131 is inclined so as to be higher. Then, when time 2 × ts elapses from the state shown in FIG. 2 and time t2 is reached and the inclined plate 133 rotates 180 degrees, the point 11p1 on the upper surface 11a of the die 11 is minimum as shown in FIG. 5B. On the other hand, the point 11p3 on the upper surface 11a of the die 11 becomes the maximum height hm as shown in FIG. Therefore, in this case, as shown in FIG. 6, the upper surface 11 a of the die 11 and the upper surface 131 a of the swinging case 131 are inclined so that the left side in the figure becomes higher.

  Thus, in the bearing inner / outer ring separation device 1 of the present embodiment, when the punch 12 is lowered by the hydraulic cylinder 15 and the punch 12 is pressed against the inner / outer ring integrated member W set on the die 11, the die 11 is pressed. The upper surface 11a of the die 11 is inclined with respect to the axial center CL of the punch 12, and the outer peripheral edge of the upper surface 11a of the die 11 is moved up and down sequentially at a cycle of 4 × ts around the axial center CL of the punch 12. The die 11 is swung.

  Therefore, conventionally, the outer ring member W1 and the inner ring member W2 of the bearing are separated from each other by a one-time fracture in which the inner ring member W2 portion of the bearing is punched from the inner and outer ring integrated member W by the shearing force of the descending punch 12 or the like. Therefore, the load applied to the inner / outer ring integrated member W was large.

  On the other hand, in the bearing inner / outer ring separation device 1 of the present embodiment, the punch 12 is lowered by the hydraulic cylinder 15 as described above, and the punch 12 hits and presses against the inner / outer ring integrated member W set on the die 11. Since the upper surface 11a of the die 11 is swung in an inclined state with respect to the axial center CL of the punch 12, the inner peripheral edge of the punched hole 111 of the die 11 that contacts the back surface of the inner / outer ring integrated member W by the swinging is inclined. Abutting at an acute angle at which an angle (shear angle) β is set, and the acute-angle abutting portion sequentially moves in the inner circumferential direction of the punching hole 111, and a boundary portion between the outer ring member W1 and the inner ring member W2 of the inner / outer ring integrated member W To apply a shearing force.

  Therefore, according to the bearing inner / outer ring separation device 1 of the present embodiment, the inner / outer ring integrated member W is not subjected to the one-time breakage that receives the shearing force from the entire die 11 at the same time as in the related art. Since the upper peripheral edge of the punched hole 111 is in an acute angle and sequentially has a shearing force that comes into contact with the back surface side of the inner and outer ring integrated member W in a pressurized state, the circumferential break along the peripheral periphery of the upper part of the punched hole 111 of the die 11 Thus, the outer ring member W1 and the inner ring member W2, which are the bases of the inner and outer rings of the bearing B, are separated from the inner and outer ring integrated member W.

  As a result, according to the bearing inner / outer ring separation device 1 of the present embodiment, the outer ring member W1 and the inner ring member W2 can be separated from the inner / outer ring integrated member W with a small press pressure and reduced noise. .

  For example, when the inclination angle (shear angle) β of the upper surface 11a of the die 11 is 2.5 degrees, for example, compared to the case where the inclination angle β is 0 degrees, the load applied to the punch 12 by the hydraulic cylinder 15 is It was reduced by about 35%. Also, the noise generated during the punching process was reduced by about 30% when the inclination angle β of the upper surface 11a of the die 11 was 2.5 degrees, compared to the case where the inclination angle β was 0 degrees.

  Therefore, in the bearing inner / outer ring separation device 1 according to the present embodiment, when the punch 12 is lowered and the punch 12 hits and presses against the inner / outer ring integrated member W which is a work piece set on the die 11, The die 11 is swung so that the outer peripheral edge of the die 12 moves up and down sequentially around the axis CL of the punch 12 with the upper surface 11a inclined with respect to the axis CL of the punch 12. Since the outer ring member W1 and the inner ring member W2 of the bearing B are separated from the inner / outer ring integrated member W by sequential breaking in the circumferential direction along the periphery, the noise is reduced with a small press pressure, The outer ring member W1 and the inner ring member W2 can be separated from the inner / outer ring integrated member W.

  In particular, in the bearing inner / outer ring separation device 1 of the present embodiment, the swing case 131 has a hemispherical side surface 131c having a hemispherical shape in which the upper half and the lower part are cut from the sphere between the upper surface 131a and the bottom surface 131b. The swing case support portion 132 has a swing case support surface 132a that matches the shape of the hemispherical side surface 131c of the swing case 131 and that makes spherical contact with the hemispherical side surface 131c of the swing case 131, Since the swinging case 131 is supported so as to be swingable also from the side surface, the swinging case 131 to which the die 11 is fixed can be smoothly swung, and at the time of sequential breakage due to the swinging, from the punch 12 or the like. The received stress is evenly supported by the swing case support surface 132a, and the outer ring member W1 and the inner ring member W2 can be smoothly separated from the inner / outer ring integrated member W.

  In the bearing inner / outer ring separation device 1 of the present embodiment, the swing case 131, the swing case support 132, the thrust bearings 137 and 138, the tilt plate 133, and the hollow spindle 134 constituting the swing mechanism unit 13 are Also, since a drop hole having an inner diameter larger than the outer diameter of the inner ring member W2 is formed, the inner ring member W2 separated from the inner / outer ring integrated member W becomes the swing case 131, the swing case support portion 132, the thrust bearings 137, 138, Through the inclined plate 133 and the hollow spindle 134, it can be dropped directly below. As a result, in the bearing inner / outer ring separation device 1 of the present embodiment, the inner ring member W2 separated from the inner / outer ring integrated member W can be easily integrated and easily conveyed to the next turning process.

  Further, in the bearing manufacturing method of the present embodiment, the inner and outer ring integrated members are formed by cutting the bar steel at predetermined intervals and forming the inner and outer ring integrated members formed by stacking the outer ring and the inner ring of the bearing formed by upsetting or cutting process. The member forming step and the inner / outer ring integrated member are set in a die having a hole smaller than the outer diameter of the inner / outer ring integrated member, the punch having an outer diameter smaller than the inner diameter of the die hole is lowered, and the punch is integrated with the inner / outer ring. While pressing against the inner ring member of the member, the die is rocked so that the upper surface of the die is inclined with respect to the axis of the punch and the outer peripheral edge of the die moves up and down sequentially around the axis of the punch. And an inner / outer ring separation step of separating the inner ring member and the outer ring member of the bearing from the inner / outer ring integrated member. Here, this inner / outer ring separation step may or may not be performed using the bearing inner / outer ring separation device 1 of this embodiment described above. As a result, according to the bearing manufacturing method of the present embodiment, the outer ring member and the inner ring member can be separated from the inner / outer ring integrated member with a small press pressure and reduced noise.

DESCRIPTION OF SYMBOLS 1 Bearing inner / outer ring separator 11 Die 111 Punching hole 12 Punch 13 Oscillating mechanism part 131 Oscillating case 132 Oscillating case support part 133 Inclined plate 134 Hollow spindle 135 Rotating torque transmitting part 136 Drive motor 137, 138 Thrust bearing 139 Radial bearing 14 Pressurized piston 15 Hydraulic cylinder 16 Base W Inner and outer ring integrated member (workpiece)

Claims (4)

A bearing inner / outer ring separation device that separates an inner ring member and an outer ring member of a bearing from an inner / outer ring integrated member formed by stacking an outer ring and an inner ring of a bearing formed by cutting steel bars at a predetermined interval and formed by upsetting or cutting. Because
A die in which a hole smaller than the outer diameter of the inner and outer ring integral member is formed, and the inner and outer ring integral member is set;
A punch that has an outer diameter smaller than the inner diameter of the die punching hole, is vertically moved and inserted into the die punching hole, and separates the inner ring member and the outer ring member of the bearing from the inner and outer ring integral member;
When the punch is lowered and the punch hits and presses against the inner and outer ring integrated members set on the die, the upper surface of the die is inclined with respect to the axis of the punch, and the punch A swing mechanism that swings the die so that the outer peripheral edge of the die moves up and down sequentially around an axis;
A bearing inner and outer ring separation device characterized by comprising: In the bearing inner and outer ring separation device according to claim 1,
The swing mechanism is
A swing case having a bottom surface, while the die is fixed to the top surface;
An inclined plate that supports the bottom surface of the swing case via a thrust bearing, and the case support inclined surface is inclined about the axis of the punch;
The inclined plate is rotated about the punch axis, and the case supporting inclined surface of the inclined plate is rotated while being inclined, and the outer peripheral edge of the die is sequentially moved up and down around the punch axis. A spindle for swinging the die,
A drive motor that rotates the spindle through a rotational torque transmission unit;
A bearing inner and outer ring separation device characterized by comprising: In the bearing inner and outer ring separation device according to claim 2,
The swing case is
Between the upper surface and the bottom surface, hemispherical side surfaces that are cut from the sphere above the upper half and the lower part,
The swing mechanism part further includes:
Matching the shape of the hemispherical side surface of the swing case, making spherical contact with the hemispherical side surface of the swing case, and supporting the swing case so that it can rotate in any direction from below. Having a swing case support portion having the swing case support surface for swingably supporting the case;
A bearing inner / outer ring separator characterized by that. Inner and outer ring integrated member forming step of cutting the bar steel at predetermined intervals and forming the inner and outer ring integrated members in a shape in which the outer ring and the inner ring of the bearing formed by upsetting or cutting process are stacked,
The inner / outer ring integrated member is set in a die having a hole smaller than the outer diameter of the inner / outer ring integrated member, a punch having an outer diameter smaller than the inner diameter of the die hole is lowered, and the punch is integrated with the inner / outer ring. When the outer ring member is pressed against the inner ring member, the outer peripheral edge of the die is moved up and down sequentially with the upper surface of the die inclined with respect to the axis of the punch and the axis of the punch as a center. The inner and outer ring separation step of swinging the die and separating the inner ring member and the outer ring member of the bearing from the inner and outer ring integral member;
A method for manufacturing a bearing, comprising:

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