JP2018179099A - Assembly method and assembly device for thrust roller bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten an assembly time required for integrally assembling a roller and a holder.SOLUTION: An assembly device of a thrust bearing includes: a roller supply member (33) configured to supply a plurality of rollers (23) to be inserted into a plurality of pockets (22) of a holder (2), to a plurality of roller extraction parts (43), the roller extraction parts having the same arrangement form as the pockets; a movement member (3) configured to move at least one of the roller extraction parts (43) and the holder (2) in order to make the held roller extraction parts (43) opposite to the pocket (22), respectively; and a press-in tool (52) configured to press the rollers (23) positioned at the roller extraction parts (43) into the opposite pockets (22), respectively.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a method and an apparatus for assembling thrust roller bearings.

  The thrust roller bearing holds a plurality of rollers radially arranged between two parallel races in pockets formed radially at equal intervals in the circumferential direction of the annular cage, The wheel may be substituted by the receiving surface of the part of the device to be incorporated.

  When assembling the thrust roller bearing and the cage integrally, generally, a metal or resin cage is disposed horizontally (vertically in axis), and one row or two rows of rollers are arranged in a horizontal direction. , Press-fit into the pocket from above with a press-fit tool such as a hammer. There is also an assembly apparatus of thrust roller bearings in which a cage is intermittently rotated about a vertical axis, and rollers are sequentially press-fitted by a press-in tool into pockets located at predetermined positions in a circumferential direction.

  Further, in JP 2007-218323 A (Patent Document 1), the cage is arranged vertically (axially horizontal), and the pocket of the cage, which rotates intermittently, faces the storage portion into which the roller is inserted. There has been proposed an assembly apparatus of a thrust roller bearing in which a press-fitting tool is pushed into a hole provided at the bottom of the storage section and the rollers stored in the storage section are pressed into the pocket.

JP 2007-218323 A

  In Patent Document 1, the roller to be press-fit into the pocket is held in the storage portion in a stable posture in the vertical direction, thereby preventing an increase in assembly time due to a press-fit error to the roller pocket.

  However, in the conventional apparatus including the assembling apparatus of Patent Document 1, the driving with the press-in tool is performed each time one roller is supplied to the position facing the pocket of the holder. That is, continuous operations of the number of rollers, the supply of rollers and the press-fitting are repeated. Therefore, in the conventional assembling apparatus, there is a problem that the assembling time of the thrust bearing is increased by the continuous operation. Although there are assembling devices that supply 2 to 4 rollers at a time, they are not sufficient to reduce the assembling time.

  The present invention has been made to solve the problems as described above, and its object is to provide a method and apparatus for assembling a thrust bearing capable of shortening the assembling time for assembling a roller and a cage together. To provide.

  A method of assembling a thrust bearing according to one aspect of the present invention is a thrust roller bearing in which a roller and a cage are assembled integrally by press-fitting the roller into a plurality of pockets radially formed in the circumferential direction of the annular cage. It is an assembly method. In this assembling method, a plurality of roller feeding steps for feeding a plurality of rollers to be inserted into a plurality of pockets to a plurality of roller takeout portions in the same arrangement form as the plurality of pockets, a plurality of roller takeout portions, and a plurality And a press-fit step of press-fitting the plurality of rollers located in the plurality of roller take-out portions into the plurality of facing pockets.

  According to another aspect of the present invention, there is provided a thrust roller bearing assembling apparatus in which thrust rollers are press-fit into a plurality of radially formed pockets in an annular cage to assemble the rollers and the cage integrally. It is an assembly apparatus of a bearing. This assembling apparatus supplies a plurality of rollers to be inserted into the plurality of pockets to a plurality of roller takeout portions in the same arrangement form as the plurality of pockets, a plurality of roller takeout portions, and a plurality of roller takeout portions. A moving member for moving at least one of the cage and the plurality of roller take-out portions so that the pockets face each other, and a press-fit for press-fitting the plurality of rollers located in the plurality of roller take-out portions into the plurality of facing pockets And the

  Preferably, the thrust roller bearing assembling apparatus further includes a plurality of roller holding members for sucking and holding the plurality of rollers supplied to the plurality of roller takeout portions in the same arrangement form.

  Preferably, the press-fit device presses the roller into the pocket by pressing the roller holding member. In this case, the press-fit tools are provided by the number of rollers, and it is desirable that the distance between the tip end position of the press-fit tools in the standby state and the holding member be different between adjacent press-fit tools.

  Preferably, the moving member includes an index table provided with a plurality of receptacles for receiving the retainer along the circumferential direction and rotating around a vertically extending central axis. In this case, it is desirable that the plurality of roller takeout portions be disposed substantially in parallel with the index table above the index table, and the index table move the retainer to a lower position of the plurality of roller takeout portions.

  More preferably, the receiving part has a through hole penetrating in the vertical direction, and the moving member further includes a pedestal for moving the through hole in the receiving part in the vertical direction to lift a holder in the receiving part.

  The thrust roller bearing assembling apparatus includes a retainer insertion portion for inserting a retainer into the receiving portion of the index table, and a retainer extraction portion for removing and carrying out the assembled retainer after the rollers are press-fitted from the receiving portion. It is desirable to further provide

  According to the present invention, it is possible to shorten the assembly time for assembling the roller and the cage together.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows notionally the assembly apparatus of the thrust bearing which concerns on embodiment of this invention. It is a perspective view which shows typically the structure of the holder | retainer insertion part in embodiment of this invention. It is a perspective view which shows typically the structure of the phase out part in embodiment of this invention. It is a perspective view which shows typically the structure of the holder | retainer assembly part in embodiment of this invention. It is a fragmentary sectional view of a roller supply mechanism in an embodiment of the invention. It is a perspective view expanding and showing the tip part (lower end part) of a roller holding member. It is a flowchart which shows the rough flow of the assembling method of the thrust roller bearing in embodiment of this invention. It is a flowchart which shows the holder | retainer assembly process in embodiment of this invention. FIG. 10 is a perspective view showing a state in which all the rollers sucked and held by the roller holding member and the pockets of the cage face each other. It is sectional drawing which shows typically the state which the roller and pocket which each roller holding member attracted-held faced. It is sectional drawing which shows typically the state by which the roller was pressingly injected in the pocket by the hammer. It is a top view which shows the holder | retainer after an assembly typically. It is a figure which shows typically the pressurization mechanism in the modification of embodiment of this invention. In the modification of the embodiment of the present invention, it is a figure expanding and showing the side of a plurality of hammers which constitute 1 unit.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference characters and description thereof will not be repeated.

(Schematic configuration)
First, a schematic configuration of the thrust bearing assembling apparatus according to the present embodiment will be described.

  FIG. 1 is a view conceptually showing an assembly apparatus (hereinafter abbreviated as “assembly apparatus”) 1 of a thrust bearing according to the present embodiment. Referring to FIG. 1, the assembling apparatus 1 mainly includes an index table 10, a holder insertion unit 11, a phase out unit 15, a holder assembly unit 12, and a holder extraction unit 13. .

  The index table 10 is, for example, substantially circular in plan view, and rotates about a central axis 10 a extending in the vertical direction. The index table 10 extends in the horizontal direction and includes four receptacles 14 for receiving the holder around the central axis 10a. Each of the receiving portions 14 includes, for example, a circular through hole 14a vertically penetrating the index table 10, and a plurality of support pieces 14b for supporting from below the cage inserted into the through hole 14a.

  The four receivers 14 are arranged at 90 ° out of phase with each other. The index table 10 rotates in one direction (for example, counterclockwise) by 90 °. The holder insertion portion 11, the phase shifting portion 15, the holder assembly portion 12, and the holder extraction portion 13 are arranged in this order along the circumferential direction of the index table 10.

  The holder insertion portion 11 inserts the holder (holder alone) before the roller is assembled into the receiving portion 14 of the index table 10. FIG. 2 is a perspective view schematically showing the structure of the holder insertion portion 11. As shown in FIG. Referring to FIG. 2, the holder insertion portion 11 has a supply path 11 a of the holder 2. The holder insertion portion 11 inserts the holder 2 transported on the supply path 11 a from above into the receiving portion 14 of the index table 10. The cage 2 comprises an annular portion 21 and a plurality of pockets 22 into which rollers are to be inserted. The cross-sectional shape of the annular portion 21 and the number of the pockets 22 are not limited.

  The phase out unit 15 performs phase out of the holder 2 inserted into the receiving unit 14 by the holder insertion unit 11. FIG. 3 is a perspective view schematically showing the configuration of the phase shifting unit 15. As shown in FIG. Referring to FIG. 3, the phase out unit 15 is disposed above the index table 10 and moves downward in a state where the holder 2 inserted in the receiving unit 14 is positioned directly below, and a plurality of holder 2 The phase of the pocket 22 in the circumferential direction is adjusted.

  The cage assembly unit 12 incorporates all the rollers into the cage 2 subjected to the phase alignment by the phase alignment unit 15. The configuration of the holder assembly 12 will be described in detail later.

  The retainer extraction portion 13 removes from the receiving portion 14 a retainer assembled by the retainer assembly 12, that is, a retainer in which rollers are incorporated (hereinafter referred to as a “assembled retainer”). The holder extraction unit 13 has an unloading passage for the assembled holder, and carries out the removed holder from the unloading passage to the next process.

(Configuration of cage assembly)
FIG. 4 is a perspective view schematically showing the structure of the cage assembly unit 12. Referring to FIG. 4, the holder assembly 12 includes a pedestal 3 functioning as a lower die, a roller supply mechanism 4 functioning as an upper die, and a pressing mechanism 5.

  The cradle 3 is located at a lower height than the index table 10 at the initial position. The receiving base 3 is circular or annular in plan view, and the outer diameter of the receiving base 3 is slightly smaller than the inner diameter of the receiving portion 14. The cradle 3 is located directly below the receiving portion 14 of the index table 10 when the holder 2 is assembled, and can be vertically moved through the through holes 14 a of the receiving portion 14. Specifically, the cradle 3 can rise from the initial position shown in FIG. 4 to the upper end position close to the roller supply mechanism 4.

  A plurality of notches 31 disposed in the same phase as the plurality of support pieces 14 b of the receiving portion 14 are provided on the outer peripheral portion of the receiving stand 3. Thereby, the cradle 3 can pass through the through hole 14 a without interfering with the support piece 14 b of the receiving portion 14. When the cradle 3 passes through the through hole 14 a from below the receiving portion 14, the cage 2 supported from below on the support piece 14 b rests on the upper surface 30 of the cradle 3 and ascends together with the cradle 3. As a result, the cage 2 is lifted to a position in contact with or in proximity to the lower surface of the roller supply mechanism 4.

  The roller supply mechanism 4 is positioned above the index table 10 at a height. The roller supply mechanism 4 includes a casing 41 having a substantially cylindrical shape in appearance and a plurality of spring chutes 33 connected to an annular outer peripheral surface 41 b of the casing 41. FIG. 5 is a partial cross-sectional view of the roller supply mechanism 4.

  As shown in FIG. 5, a plurality of roller takeout portions 43 are provided on the lower surface 41 c of the casing 41. The plurality of roller takeout portions 43 are disposed on a horizontal surface, and have the same arrangement as the plurality of pockets 22 of the cage 2. That is, assuming that the number of pockets 22 (i.e., the number of rollers) is twenty, twenty roller takeout portions 43 are formed radially in the circumferential direction at the same pitch as the pockets 22. The lower surface 41 c of the casing 41 and the plurality of roller takeout portions 43 are disposed substantially in parallel with the index table 10.

  The spring chute 33 is a roller supply member for supplying the rollers to the roller takeout portion 43. In the present embodiment, the spring chutes 33 are provided in the same number as the pockets 22. Specifically, each of the twenty spring chutes 33 supplies the roller takeout portion 43 with twenty rollers to be inserted into the pocket 22 of the cage 2.

  Each roller takeout portion 43 is exposed from the lower surface 41 c of the casing 41. In the roller supply mechanism 4, a roller holding member 42 is provided for each of the roller takeout portions 43 so that the rollers 23 supplied to the roller takeout portions 43 do not fall.

  The roller holding member 42 is a portion (hereinafter referred to as “vertical portion”) 421 extending vertically through the upper surface 41 a of the casing 41 and a portion connected to the upper end of the vertical portion 421 and extending parallel to the upper surface 41 a Part) and is formed in a substantially L shape in a side view. The roller holding member 42 is attached to the casing 41 so as to be vertically movable.

  As shown in FIG. 5, a spring 44 that biases the roller holding member 42 (the lateral portion 422) upward is fixed to the upper surface 41 a of the casing 41. The lower end of the movement range of the roller holding member 42 is a position where the lower surface of the lateral portion 422 abuts on or approaches the upper surface 41 a of the casing 41 by the spring 44 being compressed.

  FIG. 6 is an enlarged perspective view of the tip (lower end) of the vertical portion 421 of the roller holding member 42. As shown in FIG. As shown in FIG. 6, a suction claw 45 for sucking and holding the roller 23 is provided at the tip of the longitudinal portion 421 of the roller holding member 42. The suction claw 45 has a suction surface 45 a formed in an arc shape to be in surface contact with the outer diameter surface of the roller 23. The suction claws 45 (suction surfaces 45 a) of the twenty vertical portions 421 face the roller take-out portion 43.

  An air suction hole 46 is provided at the center of the suction surface 45a. A suction tube 47 communicating with the air suction hole 46 is connected to the vertical portion 421 of each roller holding member 42. The suction tube 47 sucks air from the air suction hole 46. The roller takeout portion 43 is a space exposed from the lower surface 41 c of the casing 41 and located below the suction claw 45. Therefore, by the air suction via the suction tube 47, the total number of rollers 23 delivered to the roller takeout portion 43 can be adsorbed and held on the suction surface 45a of the roller holding member 42. In this state, the outer peripheral surface of the roller 23 is in surface contact with the suction surface 45a. As described above, in the present embodiment, the supply and retention of all the rollers 23 are performed simultaneously.

  Referring again to FIG. 4, the pressing mechanism 5 includes an annular pressing plate 51 provided to be vertically movable with respect to the shaft portion 6, and a plurality of hammers (press-fitting tools) attached to the lower surface of the pressing plate 51. And 52. The plurality of hammers 52 are also provided in the same number as the pockets 22 and the rollers 23, and are provided radially along the circumferential direction. The hammer 52 press-fits the roller 23 located in the roller takeout portion 43 into the pocket 22 by pressing the roller holding member 42 from the top in a state where the above-mentioned stand 3 is positioned at the upper end position. A spring 53 (FIG. 9) having a roller pressure input is provided between the hammer 52 and the pressing plate 51.

(Assembling method of thrust roller bearing)
A method of assembling thrust roller bearings performed by the assembling device 1 will be described. FIG. 7 is a flowchart showing a rough flow of a method of assembling a thrust roller bearing. In the process described below, a control device (not shown) controls the rotation operation of the index table 10 and the operations of the holder insertion unit 11, the phase out unit 15, the holder assembly unit 12, and the holder extraction unit 13. Is realized by

  First, as shown in FIG. 2, the holder insertion unit 11 inserts the holder 2 into one receiving unit 14 of the index table 10 (step P1). At this time, as shown in FIG. 1, the phase out part 15, the holder assembly part 12, and the holder extraction part 13 are respectively disposed at positions corresponding to the remaining three receiving parts 14 of the index table 10.

  When the holder 2 is inserted into the receiving unit 14, the index table 10 is rotated by 90 ° (process P2). As a result, the holder 2 inserted into the receiving unit 14 moves to the position corresponding to the phase outputting unit 15 as shown in FIG. 3. In this state, the phase out unit 15 moves downward, and the phase of the holder 2 is adjusted (step P3). That is, the relative position of the plurality of pockets 22 with respect to the index table 10 is adjusted to a predetermined position.

  When phase alignment of the holder 2 is performed, the index table 10 is further rotated by 90 ° (step P4). As a result, the phase adjusted holder 2 moves to a position corresponding to the holder assembly 12 as shown in FIG. That is, the index table 10 moves the holder 2 to the lower position of the plurality of roller takeout portions 43. In this state, a holder assembling process is performed (process P5). The cage assembling process will be described with reference to a subroutine shown in FIG.

  As shown in FIG. 4, all the rollers 23 are simultaneously supplied to all the roller takeout portions 43 by the spring chute 33 (process P11). As described above, the roller holding member 42 is disposed immediately above the roller takeout portion 43. Therefore, the suction force of the roller holding member 42 holds all the rollers 23 in the same phase as the pockets 22 of the cage 2 in a state of being exposed from the lower end portion of the casing 41.

  When the roller 23 is supplied, the cradle 3 is elevated to the upper end position through the through hole 14 a of the receiving portion 14 of the index table 10. As a result, the cage 2 inserted in the receiving portion 14 is lifted to a position where it abuts or approaches the lower surface 41 c of the roller supply mechanism 4, and the plurality of roller holding members 42 and the plurality of pockets 22 of the holder 2 Face each other (process P12). That is, the cage 2 is sandwiched between the roller feed mechanism 4 serving as the upper mold and the pedestal 3 serving as the lower mold, and the total number of rollers 23 held by the roller holding member 42 To face.

  The state at this time is shown in FIG. 9 and FIG. FIG. 9 is a perspective view generally showing a state in which all the rollers 23 arranged in the roller takeout portion 43 and the pockets 22 of the cage 2 face each other. In FIG. 9, a part of the casing 41 in the roller supply mechanism 4 is shown by a broken line. FIG. 10 is a cross-sectional view schematically showing a state in which the rollers 23 and the pockets 22 which are held by suction by the respective roller holding members 42 are facing each other.

  Thereafter, the suction of the roller 23 through the suction tube 47 is stopped, and the total number of rollers 23 is temporarily placed on the pocket 22 of the holder 2. Specifically, the rollers 23 are placed on the roller stoppers 24 (FIG. 10) provided on both sides of the pocket 22. In the step of making the roller takeout portion 43 and the pocket 22 of the cage 2 face each other, the roller 23 may be temporarily placed on the pocket 22 of the cage 2.

  When the roller 23 is temporarily placed on the pocket 22, as shown in FIG. 9, it is desirable that the hammer 52 be in contact with or close to the upper surface (of the lateral portion 422) of the roller holding member 42. In the pressing mechanism 5, the position of the pressing plate 51 is fixed so that at least a part of the hammer 52 is in contact with or in proximity to the roller holding member 42 in the standby state (other than at the time of driving). Good. In this case, the assembly time can be further shortened.

  Thereafter, a load from above is applied to the roller holding member 42 by the hammer 52 of the pressing mechanism 5 to press-fit the roller 23 into the pocket 22 (process P13). FIG. 11 shows a state in which the roller 23 is pressed into the pocket 22. As a result, as shown in FIG. 12, the assembled cage 2A in which the rollers 23 are incorporated into the cage 2 is completed. Thus, the assembling process of the cage 2 is completed.

  In the press-in process of the rollers 23, for example, four hammers 52 at equal intervals on the circumference are set as one set, and the descent timing of the hammers 52 is shifted in units of sets to sequentially put the predetermined number of rollers 23 into the pockets 22. Press fit. Even in this case, since the number of hammers 52 is the same as the number of pockets 22 and rollers 23, it is not necessary to rotate the pressing plate 51. Therefore, it is possible to press-fit all the rollers 23 into the pockets 22 at a higher speed than before.

  In this embodiment, at the stage of temporarily placing all the rollers 23 on the pockets 22 of the holder 2, the suction of the rollers 23 via the suction tube 47 is stopped, but the press fit of the rollers 23 by the hammer 52 The suction of the roller 23 may be continued until time. By doing so, it is also possible to stabilize the press-fitting operation of the roller 23 into the pocket 22.

  Referring again to FIG. 7, when the assembly process of the holder 2 is completed, the index table 10 is rotated 90 ° (step P6) to move the assembled holder 2A to a position corresponding to the holder extraction portion 13 Let The holder removal portion 13 removes the holder 2A from the receiving portion 14 and carries it out to the next process (process P7). This completes one cycle of cage assembly.

  As shown in FIG. 1, when the receiving portion 14 holding the assembled holder 2A is positioned at the position of the holder extraction portion 13, the remaining three receiving portions 14 are the holder insertion portion 11, the phase It is located in the position of the protrusion part 15 and the holder | retainer assembly part 12, respectively. Therefore, assuming that the holder 2A supported by the receiving portion 14 positioned at the holder extraction portion 13 is referred to as a "first holder", the first holder may be parallel to the extraction of the first holder. Next, the assembling process of the “second holder” inserted into the receiving unit 14, the phase alignment of the “third holder” inserted into the receiving unit 14 next to the second holder, and The insertion of the next "fourth cage" into the receiving portion 14 of the three cages can be performed at the same timing. As a result, the time required for the assembly cycle from the supply of the cage 2 to the unloading of the cage 2A after assembly can be significantly reduced.

  As described above, according to the assembly apparatus 1 of the present embodiment, it is possible to supply all the rollers 23 at one time to the roller takeout portion 43 having the same arrangement form as the pockets 22 of the cage 2. it can. Therefore, the supply time of the roller 23 required for one holder 2 can be shortened as compared with the method of supplying 1 to 4 rollers at a time as in the conventional assembling device.

  Further, the assembling apparatus 1 sucks and holds all the rollers 23 supplied to the roller takeout portion 43 in the same arrangement form, and causes the pockets 22 of the cage 2 to face. Therefore, the press-fitting operation of the roller 23 can be performed without rotating the cage 2 itself about the axis. Therefore, the roller 23 can be press-fit at a higher speed than before.

  Furthermore, in the present embodiment, the roller 23 can be supplied to the standby position (that is, the roller takeout portion 43) in the same phase as the pocket 22 of the holder 2 located below, with the aid of the suction claw 45. It can carry out at the same process, without making the suction of the supply place 23 of the roller 23 into another process.

  As a result of these, the time required for the incorporation of the roller 23 into the cage 2 from the supply of the roller 23 to the press-fitting of the roller 23 can be shortened from the conventional about 9 seconds to about 2.5 seconds.

  Further, in the present embodiment, since the index table 10 is used, there is no need to horizontally move or rotate the cradle 3, the roller supply mechanism 4, and the pressing mechanism 5. Therefore, the cage 2 can be assembled efficiently in a short time.

(Modification)
In the press-in process of the rollers 23 (process P13 in FIG. 8), all the hammers 52 may be simultaneously lowered to press-fit all the rollers 23 simultaneously. In order to press-fit all the rollers 23 into the pockets 22 appropriately, the above-described pressure mechanism 5 may be configured as follows.

  13 and 14 schematically show a pressure mechanism 5A according to a modification of the present embodiment. In the present modification, twenty hammers 52 are divided into, for example, four units U1 to U4, and the upper and lower lengths of the hammers 52a to 52e in each unit are made different.

  Specifically, as shown in FIG. 14, the upper and lower lengths of the hammer 52a located at one end of each unit and the hammer 52e located at the other end become shorter in order. That is, a step is provided at the tip end position of the adjacent hammer 52. It is desirable that the step L between the adjacent hammers 52 be equal to or slightly larger than the plate thickness (for example, 0.5 mm) of the cage 2 (annular portion 21).

  Thus, by providing the step between the adjacent hammers 52, the distance between the tip end position of the hammers 52 and the holding member 42 is different between the adjacent hammers 52. Therefore, even if all the hammers 52 are lowered (activated) simultaneously, it is possible to press-fit all the rollers 23 into the pockets 22 at one time. As a result, the load on the cage 2 due to the press-in operation of the rollers 23 can be significantly reduced, so the quality of the cage 2 can be ensured. Note that the steps of the hammers 52a to 52e can be absorbed by the spring 53 shown in FIG.

  In the present modification, twenty hammers 52 are divided into four units U1 to U4 so that the lengths of hammers 52a to 52e become shorter in order, but at least steps are provided between adjacent hammers 52. It should be done.

  The pressing mechanism 5A shown in the present modification is an example of a mechanism for sequentially pressing in all the rollers 23, and may be a sequentially pressing mechanism using a cam, a cylinder, a motor or the like.

(Other modifications)
In the assembling apparatus 1 described above, the roller 23 supplied to the roller takeout portion 43 is held as it is by utilizing air suction by the roller holding member 42. If it can be made to stand by, methods other than air suction may be used.

  Further, in the present embodiment, after supplying all the rollers 23 to the roller takeout portion 43, the cage 2 is moved upward to make the plurality of roller takeout portions 43 and the plurality of pockets 22 face each other ( Steps P11 and P12 in FIG. However, these steps may be reversed or performed simultaneously.

  Further, in the present embodiment, in order to cause the pockets 22 of the holder 2 to face the roller takeout portion 43 in the fixed position, the holder 2 is moved by rotating the index table 10 and raising the pedestal 3. And However, the roller takeout portion 43 and the pocket 22 of the retainer 2 may be made to face each other by moving the roller takeout portion 43 instead of the retainer 2 (or together with the retainer 2). That is, the assembling apparatus 1 may be provided with a moving member for moving at least one of the cage 2 and the roller holding member 42 in order to make the plurality of roller takeout portions 43 and the plurality of pockets 22 face each other.

  Moreover, although the form which incorporates the roller 23 from the top into the holder 2 arrange | positioned on the horizontal surface was demonstrated in this Embodiment, it is not limited to such a form. For example, a mode may be adopted in which the roller 23 is installed sideways in the cage 2 disposed on the vertical surface.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the above description but by the claims, and is intended to include all the modifications within the meaning and scope equivalent to the claims.

  Reference Signs List 1 assembling device, 2 cage (single), 2A assembled cage, 3 receiving block, 4 roller feeding mechanism, 5, 5A pressing mechanism, 6 shaft portion, 10 index table, 11 cage insertion portion, 12 holding Assembly part, 13 Cage take-out part, 14 Receiving part, 15 Phase out part, 21 Annular part, 22 Pocket, 23 Roller, 24 Roller stopper, 31 Notch part, 33 Spring chute, 41 Casing, 42 Roller holding member , 43 roller take-out portion, 44, 53 spring, 45 suction claw, 46 air suction hole, 47 suction tube, 51 pressure plate, 52, 52a to 52e hammer, 421 vertical portion, 422 horizontal portion, U1 to U4 unit.

Claims (7)

A method of assembling a thrust roller bearing, in which a roller and a cage are assembled integrally by press-fitting the rollers into a plurality of pockets formed radially in the circumferential direction of an annular cage,
Supplying a plurality of rollers to be inserted into the plurality of pockets to a plurality of roller takeout portions in the same arrangement form as the plurality of pockets;
A facing process in which the plurality of roller takeout portions and the plurality of pockets face each other;
And a press-fitting step of press-fitting the plurality of rollers located at the plurality of roller take-out portions into the plurality of facing pockets. An assembly apparatus of thrust roller bearings, in which rollers and a cage are assembled integrally by press-fitting the rollers into a plurality of pockets formed radially in the circumferential direction of the annular cage,
A roller supply member for supplying a plurality of rollers to be inserted into the plurality of pockets to a plurality of roller take-out portions in the same arrangement form as the plurality of pockets;
A moving member for moving at least one of the retainer and the plurality of roller takeout portions such that the plurality of roller takeout portions and the plurality of pockets face each other;
An assembly device for a thrust roller bearing, comprising: a press-fit tool for press-fitting the plurality of rollers located at the plurality of roller takeout portions into the plurality of facing pockets.   The thrust roller bearing assembling apparatus according to claim 2, further comprising: a plurality of roller holding members configured to suction and hold the plurality of rollers supplied to the plurality of roller takeout portions in the same arrangement form. The press-fit tool press-fits the roller into the pocket by pressing the roller holding member.
The thrust roller according to claim 3, wherein the press-fit tool is provided for the number of the rollers, and the distance between the tip end position of the press-fit tool in the standby state and the roller holding member differs between adjacent press-fit tools Bearing assembly device. The moving member includes an index table provided with a plurality of receiving portions for receiving the retainer along a circumferential direction, and rotating around a vertically extending central axis,
The plurality of roller takeout portions are disposed substantially in parallel with the index table above the index table,
The thrust roller bearing assembling apparatus according to any one of claims 2 to 4, wherein the index table moves the cage to a lower position of the plurality of roller takeout portions. The receiving portion has a through hole penetrating in the vertical direction,
The thrust roller bearing assembling apparatus according to claim 5, wherein the moving member further includes a pedestal which vertically moves the through hole of the receiving portion and lifts the retainer in the receiving portion. A holder insertion unit for inserting the holder into the receiving unit of the index table;
The thrust roller bearing assembling apparatus according to claim 5 or 6, further comprising: a cage takeout portion for taking out the assembled cage after the rollers are press-fitted and taking it out from the receiving portion.

Images