JP2010214537A - Device and method for separating workpiece, method for manufacturing needle bearing, method for manufacturing cam follower and needle bearing, and cam follower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for separating a workpiece, preventing the workpiece to be conveyed from being clogged and stabilizing a position of the conveyed workpiece. <P>SOLUTION: The device 4 for separating the workpiece separates a workpiece out of a plurality of workpieces W2 that have a rod-like shape and are continuously conveyed in the axial direction thereof, and is provided with: a first conveying means for conveying the workpiece in parallel to a horizontal plane to a first conveying direction D1 along an axial line of the workpiece; a support base 42 arranged with a support surface 42a disposed in parallel to the horizontal plane where the workpiece is injected on a first position P1 of the support base 42 by the first conveying means; and a second conveying means 45 having a pressing surface 41a which conveys the workpiece from the first position P1 to a second position P2 where a step portion 42b is arranged, in the second conveying direction E1 that intersects with the first conveying direction D1 on the support surface 42a. In the step portion 42b, the support surface 42a is offset downward by a specific amount from the second position P2 toward the second conveying direction E1 side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a workpiece separation device, a workpiece separation method, a needle bearing manufacturing method, a cam follower manufacturing method, a needle bearing, and a cam follower.

2. Description of the Related Art Conventionally, a method is known in which a single workpiece is separated from a workpiece that has a rod shape and is continuously conveyed in the axial direction, and machining is performed using the separated workpiece (for example, a patent) Reference 1).
In the needle bearing assembling method shown in Patent Document 1, needles (workpieces) are continuously conveyed in the axial direction from above by a plurality of tubular spring chutes (first conveying means).

JP 2002-242948 A

  However, in the method for assembling the workpiece shown in Patent Document 1, since the workpiece that is continuously conveyed in the axial direction is supplied from above, the workpiece tips are strongly contacted in the spring chute and the workpiece is clogged, and the workpiece is damaged. It was easy to occur. In particular, this problem has become more prominent in recent years when miniaturization of workpieces is required.

  In addition, since the work once transported to a predetermined position rolls and moves to another place, there is a problem that the work transport speed decreases as a whole.

  The present invention has been made in view of such problems, and is capable of preventing clogging of a conveyed workpiece and stabilizing the position of the conveyed workpiece, and separating the workpiece. The present invention provides a method, a needle bearing manufacturing method, a cam follower manufacturing method, a needle bearing manufactured by a needle bearing manufacturing method, and a cam follower manufactured by a cam follower manufacturing method.

In order to solve the above problems, the present invention proposes the following means.
The workpiece separation device of the present invention is a workpiece separation device that has a rod-like shape and separates one workpiece from a plurality of workpieces that are continuously conveyed in the axial direction of the workpiece. The workpiece separation device is parallel to a horizontal plane. A first conveying means for conveying the workpiece in a first conveying direction along the axis of the workpiece, and a support surface arranged in parallel to a horizontal plane, and the first conveying means provides a first on the support surface. And a second position where a step portion is provided from the first position in a second conveying direction that intersects the first conveying direction on the support surface. And a second conveying means having a pressing surface that conveys the workpiece until the support surface on the second conveying direction side is offset downward from the second position by a predetermined amount in the stepped portion. It is characterized by having.

  Further, the workpiece separation method of the present invention is a workpiece separation method in which one workpiece is separated from a plurality of workpieces continuously conveyed in the axial direction of the workpiece, and the workpiece is parallel to a horizontal plane. A first conveying step of conveying the workpiece in a first conveying direction along the axis of the workpiece and feeding the workpiece to a first position on a supporting surface arranged parallel to a horizontal plane; and on the supporting surface. A second conveying step of conveying the workpiece by a pressing surface from the first position to a second position provided with a step in a second conveying direction intersecting the first conveying direction; In the step portion, the support surface on the second transport direction side from the second position is offset downward by a predetermined amount.

According to this invention, since the workpiece is transported to the first position along the horizontal plane, it is possible to suppress the gravity acting on the workpiece from acting in the direction in which the workpieces contact each other. Therefore, it is possible to suppress the force with which the tips of the workpieces come into contact with each other.
In addition, the work that has been transported in the first transport direction along the axial direction of its own and placed in the first position is the second crossing the first transport direction on a support surface arranged in parallel to the horizontal plane. It is transported by the pressing surface in the transport direction and falls downward by a predetermined amount at the step portion at the second position. For this reason, it can prevent that the workpiece | work conveyed to the 2nd position moves to a reverse direction with respect to a 2nd conveyance direction, and can stabilize the position of a workpiece | work.
Then, after the workpieces are conveyed to the second position, the workpieces are conveyed side by side in a direction perpendicular to the axis of the workpieces, so that the tips of adjacent workpieces do not come into contact with each other.
Therefore, according to the present invention, it is possible to prevent clogging of the conveyed work.

More preferably, the pressing surface is provided with a splash prevention surface that prevents the workpiece from jumping up from the support surface.
According to the present invention, it is possible to suppress the workpiece that is pushed by the pressing surface and conveyed in the second conveyance direction from jumping up from the support surface, and the posture of the conveyed workpiece is disturbed and the workpiece is clogged on the support surface. .

More preferably, the pressing surface is provided with a pop-out preventing surface that prevents the workpiece from popping out in the second transport direction.
According to this invention, the workpiece that is pushed by the pressing surface and conveyed in the second conveying direction leaves the pressing surface and jumps out in the second conveying direction, the posture of the conveyed workpiece is disturbed, and the workpiece is on the support surface. Can prevent clogging.

In addition, the needle bearing manufacturing method of the present invention uses a workpiece separation method according to any one of the above, and a predetermined number used for one needle bearing from a plurality of needles conveyed to the second position. More preferably, the predetermined number of needles are inserted from the direction intersecting the axis of the needle bearing.
According to the present invention, it is possible to manufacture the needle bearing while preventing clogging of the conveyed needle and stabilizing the position of the conveyed needle.
In addition, since a predetermined number of needles used for one needle bearing can be separated, the needles can be incorporated into the needle bearing without excess or deficiency.
Further, since the needle is inserted from the direction intersecting the axis of the needle bearing, the same manufacturing method can be used for the needle bearing using the retainer and the needle bearing not using the retainer.

Further, the cam follower manufacturing method of the present invention uses the workpiece separating method according to any one of the above, and from a plurality of needles conveyed to the second position, the predetermined number of the cam followers used for one cam follower. More preferably, the needles are separated and the predetermined number of the needles are inserted from a direction intersecting the axis of the cam follower.
According to the present invention, it is possible to manufacture a cam follower while preventing clogging of the conveyed needle and stabilizing the position of the conveyed needle.
Moreover, since a predetermined number of needles used for one cam follower can be separated, the needles can be incorporated into the cam follower without excess or deficiency.
Further, since the needle is inserted from the direction intersecting the axis of the cam follower, the same manufacturing method can be used for the cam follower using the retainer and the cam follower not using the retainer.

The needle bearing of the present invention is more preferably manufactured by the needle bearing manufacturing method described above.
According to this invention, clogging of the needle to be conveyed can be prevented, and scratches generated on the needle can be suppressed. Therefore, rotation about the axis of the needle bearing can be stabilized.

In addition, the cam follower of the present invention is more preferably manufactured by the method for manufacturing a cam follower described above.
According to this invention, clogging of the needle to be conveyed can be prevented, and scratches generated on the needle can be suppressed. Therefore, rotation about the axis of the cam follower can be stabilized.

According to the workpiece separation device, the workpiece separation method, the needle bearing manufacturing method, and the cam follower manufacturing method of the present invention, it is possible to prevent clogging of the conveyed workpiece and to stabilize the position of the conveyed workpiece. .
In addition, according to the needle bearing and cam follower of the present invention, it is possible to suppress damage generated on the workpiece and to stabilize the rotation about the axis of the needle bearing and cam follower.

It is a block diagram of the manufacturing system of the cam follower of embodiment of this invention. It is a block diagram regarding control of the manufacturing system of the cam follower of the embodiment of the present invention. It is a perspective view of the cam follower manufactured with the manufacturing system of the cam follower of the embodiment of the present invention. It is explanatory drawing of the separation apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is sectional drawing of the cutting line X1-X1 in FIG. It is a flowchart of the process of the separation apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is explanatory drawing which shows the process of the separation apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is sectional drawing of the cutting line X2-X2 in FIG. It is explanatory drawing which shows the process of the separation apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is sectional drawing of the cutting line X3-X3 in FIG. It is explanatory drawing of a structure of the manufacturing system of the cam follower of embodiment of this invention. It is sectional drawing of the cutting line AA in FIG. It is a flowchart of the process of the assembly apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is explanatory drawing which shows the process of the assembly apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is explanatory drawing which shows the process of the assembly apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is explanatory drawing which shows the process of the assembly apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is explanatory drawing which shows the process of the assembly apparatus of the manufacturing system of the cam follower of embodiment of this invention. It is explanatory drawing which shows the process of the assembly apparatus of the manufacturing system of the cam follower of embodiment of this invention.

Hereinafter, a cam follower manufacturing system according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a cam follower manufacturing system, and FIG. 2 is a block diagram relating to control of the cam follower manufacturing system.
In the following embodiments, the cam follower manufacturing system 1 will be described as an example, but a needle bearing manufacturing system may be used.

As shown in FIG. 1, the cam follower manufacturing system 1 assembles a predetermined number of needles necessary for assembling one cam follower from the needles stored in the needle supply device 31 by the separating device 4 and the counting device 6. In addition to being supplied to the apparatus 5, an operator operating the cam follower manufacturing system 1 supplies a stud and an outer ring to the assembling apparatus 5 one by one, whereby the cam follower is continuously manufactured by the assembling apparatus 5.
The separation device 4 corresponds to a workpiece separation device in claims.
Further, the needle supply device 31 is a parts feeder or the like, and aligns the direction so that a large number of needles move in the axial direction and supplies the needle to the separation device 4.

As shown in FIG. 2, the cam follower manufacturing system 1 controls a valve switching unit 21 that switches the pressure of compressed air that generates a driving force, a linear feeder 48 that will be described later, and a first end rotary motor 51 c and will be described later. And a control unit 22 for controlling various cylinders by a valve switching unit 21.
In addition, as shown in FIG. 3, the cam follower W manufactured by the cam follower manufacturing system 1 of the present embodiment has a stud W1 having a predetermined axis C1 and a rod-like shape on the outer peripheral surface W5 of the stud W1. A plurality of needles W2 arranged rotatably in the circumferential direction of the stud W1 and a cylindrical outer ring W3 that supports the plurality of needles W2 from the outside are provided.
The needle W2 corresponds to the workpiece in the claims.

FIG. 4 is an explanatory view of the separation device 4, and FIG. 5 is a sectional view taken along the cutting line X1-X1 in FIG.
As shown in FIGS. 4 and 5, the separating device 4 continuously conveys a plurality of needles W2 in the first conveying direction D1 that is the direction of the axis C of the needle W2, and puts them into the first position P1. One needle W2 is separated from the needle W2, and is transported in the second transport direction E1.
The separation device 4 is provided with a first transport means 46 for transporting the needle W2 in a first transport direction D1 parallel to the horizontal plane and along the axis of the needle W2, and an upper support surface 42a disposed in parallel to the horizontal plane. The upper support base 42 in which the needle W2 is introduced to the first position P1 on the upper support surface 42a by the first transport means 46, and the second transport direction E1 orthogonal to the first transport direction D1. In addition, second transport means 45 having a pressing surface 41a for transporting the needle W2 from the first position P1 to the third position P3 described later in the second transport direction E1 is provided.
The upper support surface 42a corresponds to the support surface in the claims, and the upper support table 42 corresponds to the support table.

The first transport means 46 includes a transport support base 47 provided with a transport support surface 47a that supports the needle W2 from below, and a linear feeder 48 that transports the needle W2 on the transport support surface 47a in the first transport direction D1. And have.
Further, as shown in FIG. 4, a pair of transport support bases 47 arranged in parallel to the first transport direction D1 with a predetermined interval are provided on the transport support base 47 in order to guide the needle W2 in the first transport direction D1. A side wall 47b is provided.
The second transport means 45 includes a separation rod 41 that transports the needle W2 supplied to the first position P1 to the third position P3, and the separation rod 41 in the second transport direction E1 and the second transport direction E1. And a transport cylinder 43 that reciprocates in the second upstream direction E2, which is the opposite direction.

The separation rod 41 moves only in the second transport direction E1 and the second upstream direction E2 by a linear guide (not shown) extending in the second transport direction E1.
The separating rod 41 is a surface orthogonal to the second transport direction E1, and has a pressing surface 41a that presses the needle W2 in the second transport direction E1, and the posture of the needle W2 that is transported by the pressing surface 41a. A flange 41b is provided for stabilization. The pressing surface 41a is provided with a spring-up preventing surface 41c that prevents the needle W2 from jumping up from the upper support surface 42a, and a pop-out preventing surface that prevents the needle W2 from jumping out in the second transport direction E1. 41d is provided.
Further, a step portion 42b is provided at the second position P2 of the upper support 42 so as to descend from the upper support surface 42a to the lower support surface 61a of the lower support base 61 described later. The lower support surface 61a extends from the second position P2 toward the second transport direction E1, and the lower support surface 61a is a plane that is offset downward by a predetermined amount from the upper support surface 42a.
At this time, as shown in FIG. 5, the distance H between the lower support surface 61a and the lower end portion 41e of the pop-out preventing surface 41d is set longer than the outer diameter of the needle W2.

  Next, the operation of the separation apparatus configured as described above will be described. FIG. 6 is a flowchart of the steps of the separation apparatus, and FIGS. 7 to 10 are explanatory diagrams showing the steps of the separation apparatus. Before each process of the separation device is started, the separation rod 41 waits at a standby position J in which the flange portion 41b is disposed on the first position P1, as shown in FIGS. Yes. The needle W2 has not yet been put into the flange 41b of the separating rod 41.

First, in the first transport step (step S1), as shown in FIGS. 4 and 5, the controller 22 drives the linear feeder 48 to pass the needle W2 through the transport support surface 47a to the first transport. Then, the needle W2 is introduced into the first position P1 on the upper support surface 42a, and the process proceeds to step S2.
Since the needle W2 is conveyed to the first position P1 along the horizontal plane, it is possible to suppress the gravity acting on the needle W2 from acting in the direction in which the needles W2 come into contact with each other. Accordingly, the force with which the tips of the needles W2 come into contact with each other can be suppressed.
Further, the needle W2 introduced into the first position P1 is surely supported so as to be surrounded by the four surfaces of the upper support surface 42a, the pressing surface 41a of the separating rod 41, the splash prevention surface 41c, and the protrusion prevention surface 41d. Is done.

In the second transport step (step S2), the control unit 22 drives the transport cylinder 43 by the valve switching unit 21, and the second support process 42a is moved over the upper support surface 42a as shown in FIGS. In the transport direction E1, the needle W2 is transported by the pressing surface 41a from the first position P1 to the second position P2 where the stepped portion 42b is provided.
Here, since the spring surface 41c is provided on the pressing surface 41a, the needle W2 which is pushed by the pressing surface 41a and transported in the second transport direction E1 springs up from the upper support surface 42a and is transported. Can prevent the needle W2 from clogging on the upper support surface 42a.
Further, since the pop-out prevention surface 41d is provided on the pressing surface 41a, the needle W2 that is pressed by the pressing surface 41a and is transported in the second transport direction E1 is separated from the press surface 41a in the second transport direction E1. It is possible to prevent the needle W2 from popping out and being conveyed from being disturbed and clogging the needle W2 on the upper support surface 42a.
Further, the needle W2 transported to the second position P2 falls on the lower support surface 61a downward by a predetermined amount at the stepped portion 42b. For this reason, the needle W2 conveyed to the second position P2 can be prevented from moving in the second upstream direction E2, and the position of the needle W2 can be stabilized.

Here, the control unit 22 further drives the transport cylinder 43 to transport the needle W2 to the third position P3 in the second transport direction E1 by the pressing surface 41a as shown in FIGS. The needle W2 that has been transported to the third position P3 is pushed in the second transport direction E1 on the lower support surface 61a, and the needle W2 is supplied to the counting device 6.
After being transported to the second position P2, the needle W2 is transported side by side in a direction orthogonal to the axis C of the needle W2, so that the tips of the adjacent needles W2 do not come into contact with each other.
Therefore, the separation device 4 can prevent clogging of the conveyed needle W2.
Further, since the distance H between the lower support surface 61a and the lower end portion 41e of the pop-out prevention surface 41d is set to be longer than the outer diameter of the needle W2, the separation rod 41 that has conveyed the needle W2 to the third position P3 is the second. The needle W2 can be released from the collar 41b when moving in the upstream direction E2.
When the above process is completed, the control unit 22 drives the transport cylinder 43 by the valve switching unit 21 to transport the separation rod 41 to the standby position J again.
Thus, the separation rod 41 can transport the needle W2 in the second transport direction E1 simply by reciprocating in the second transport direction E1 and the second upstream direction E2. Therefore, the structure of the second transport unit 45 is simplified, the control of the second transport unit 45 is simplified, and the cycle time can be shortened.

As shown in FIG. 11, the counting device 6 includes a lower support base 61 provided with a lower support surface 61a for supporting the plurality of needles W2 conveyed to the third position P3 from below, and a third position P3. A weight 62 that prevents the needle W2 supplied to the second side from moving in the second conveying direction E1 alone, and a biasing plate that urges a large number of needles W2 supplied to the lower support surface 61a in the second conveying direction E1. 63, and an elevator 64 that separates and conveys a predetermined number of needles W2 used for one cam follower W.
A pair of lower support 61 extends in the second transport direction E1 that guides the needle W2 in the second transport direction E1 and is arranged in parallel with a predetermined interval in the first transport direction D1. Side wall 61b is provided. Further, in the present embodiment, the upper support base 42 and the lower support base 61 have different configurations and are arranged adjacent to each other, but the upper support base 42 and the lower support base 61 may be integrated.
When the needle W2 is transported to the third position P3 by the separation rod 41, the needle W2 previously transported to the third position P3 is transported while being pushed in the second transport direction E1. The weight 62 causes the second conveyance of the needle W2 on the lower support surface 61a to bring the needle W2 on the lower support surface 61a pushed in the second conveyance direction E1 by the separating rod 41 toward the second upstream direction E2. It arrange | positions at the direction E1 side. Each time the separation rod 41 pushes the needle W2 previously transported to the third position P3 in the second transport direction E1, the weight 62 is integrated with the plurality of needles W2 in the second transport direction E1. Moving.

The urging plate 63 urges a part of the plurality of needles W2 supplied on the lower support surface 61a by the urging means (not shown) in the second transport direction E1 and presses the urging plate 63 against the wall 64b of the elevator 64.
The elevator 64 is provided with a counting hole 64a penetrating in the second conveying direction E1, and a predetermined number, for example, 15 needles W2 necessary for assembling one cam follower W are accommodated in the counting hole 64a. Dimensions are set as possible.
The elevator 64 reciprocates in the vertical direction F in the range from the descending end position Q1 to the ascending end position Q2 by the elevator drive cylinder 65. When the elevator 64 is disposed at the rising end position Q2, the urging plate 63 supplies the needle W2 into the counting hole 64a while moving in the second transport direction E1.
On the other hand, when the elevator 64 is moved from the rising end position Q2 by the elevator drive cylinder 65, the urging plate 63 cannot be moved in the second transport direction E1 by the wall 64b of the elevator 64 and is stopped.
In this way, since the elevator 64 can separate a predetermined number of needles W2 used for one cam follower W, the needle W2 can be incorporated into the cam follower W without excess or deficiency in a later process.

  When the sensor (not shown) detects that the number of needles W2 arranged from the urging plate 63 to the wall portion 64b is less than the predetermined number required to assemble one cam follower W, the control unit 22 The urging plate 63 is raised once so as not to interfere with the needle W2 by a plate moving device (not shown), and the weight 62 is raised by a weight moving device (not shown). Then, after the urging plate 63 is arranged at the plate return position R from above by the plate moving device, the urging plate 63 is again moved to the second conveying direction E1 by the urging means with the needle W2 on the second conveying direction E1 side. Energize to. Further, the control unit 22 causes the weight moving device to place the weight 62 so as to come into contact with the needle W2 disposed on the second upstream direction E2 side from the plate return position R from the second transport direction E1 side.

FIG. 12 is a cross-sectional view taken along line AA in FIG. In FIG. 12, the assembling apparatus 5 has a stud W1 and an outer ring W3 set therein, and a predetermined number of needles W2 are accommodated in a counting hole 64a provided in the elevator 64.
As shown in FIGS. 11 and 12, the assembling apparatus 5 includes a rotating means 51 for rotating the stud W1 around the axis C1, a set jig 52 arranged at a predetermined interval from the stud W1, and a set jig. Jig moving means 53 for dividing and joining the tool 52, rotating member incorporating means 54 for assembling the needle W2, outer ring assembling means 55 for assembling the outer ring W3, rotating means 51, jig moving means 53 and outer ring assembling. It has an assembly base 56 for securing the means 55.

As shown in FIG. 12, the rotating means 51 includes a first end support 51a configured in a substantially bottomed cylindrical shape that supports the distal end side of the stud W1, and a first end support 51a in the rotation direction B. A first end rotation motor 51c that generates a driving force to rotate, a second end support 51d configured in a substantially bottomed cylindrical shape that supports the proximal end side of the stud W1, and a second end support 51d. A support spring 51e that biases and supports the first upstream direction D2, which is opposite to the first transport direction D1, a bearing 51f that rotatably supports the second end support 51d, and a support spring 51e. And a second end drive cylinder 51b for reciprocally moving the second end support 51d in the first upstream direction D2 through the assembly base 56 to which is fixed.
The first end rotary motor 51c and the bearing 51f are also fixed to the assembly base 56, and the second end drive cylinder 51b is supported by support means (not shown).

As shown in FIGS. 11 and 12, the setting jig 52 includes a first jig 52a and a second jig 52b. The first jig 52a and the second jig 52b have the same diameter as the inner peripheral surface W6 of the outer ring W3, and support from one end G1 side to the intermediate part G2 of the plurality of needles W2 in the axis C1 direction of the stud W1. Respectively have inner peripheral surfaces 52d and 52e. The inner peripheral surface 52d of the first jig 52a and the inner peripheral surface 52e of the second jig 52b have a common axis line C2, and the axis C2 includes the first end support 51a and the first end. It corresponds to the axis of each of the partial rotation motor 51c, the second end support 51d, the bearing 51f, and the second end drive cylinder 51b.
The second jig 52b is provided with a chute 52c for incorporating the needle W2.
The jig moving means 53 includes a first jig cylinder 53a and a second jig cylinder 53b that reciprocate the first jig 52a and the second jig 52b along a linear motion guide (not shown) extending in the vertical direction F. It has. The first jig 52a and the second jig 52b can be divided and joined by the first jig cylinder 53a and the second jig cylinder 53b.

As shown in FIG. 11, the rotating member incorporating means 54 includes an incorporated rod 54a that reciprocates in the second transport direction E1 and the second upstream direction E2 by a guide member (not shown), and an outer ring jig that drives the incorporated rod 54a. And a drive cylinder 54b.
When the elevator 64 is arranged at the descending end position Q1, the assembly rod 54a is moved in the second transport direction E1 by the outer ring jig drive cylinder 54b, whereby the predetermined number of needles W2 in the counting hole 64a are moved to the chute portion 52c. It can be assembled between the outer peripheral surface W5 of the stud W1 and the inner peripheral surfaces 52d and 52e of the first jig 52a and the second jig 52 in the set jig 52.
As shown in FIG. 12, the outer ring assembly means 55 includes an outer ring jig 55a for assembling the outer ring W3 along the axis C1 direction from the other end G3 side of the plurality of needles W2 in the axis C1 direction of the stud W1. And an outer ring jig driving cylinder 55b for driving the outer ring jig 55a.

Next, the operation of the assembly apparatus configured as described above will be described. FIG. 13 is a flowchart of the steps of the assembling apparatus, and FIGS. 14 to 18 are explanatory diagrams showing the steps of the assembling apparatus.
Before each process of the cam follower manufacturing method is started, a predetermined number of needles W2 are accommodated in the counting holes 64a provided in the elevator 64, and the elevator 64 is disposed at the lower end position Q1.

First, in the jig attaching step (step S11), as shown in FIG. 12, the operator can use the common axis axis C2 of the inner peripheral surface 52d of the first jig 52a and the inner peripheral surface 52e of the second jig 52b. The stud C1 is arranged such that the axis C1 of the stud W1 has the same axis. In addition, the operator attaches the outer ring W3 to the outer peripheral surface of the first end support 51a.
Then, the operator instructs the control unit 22 by an input device (not shown), drives the second end drive cylinder 51b by the valve switching unit 21, and moves the second end support 51d in the first upstream direction D2. By moving, the stud W1 is sandwiched and supported by the first end support 51a and the second end support 51d, and the process proceeds to step S12.

Next, in the rotating member assembling step (step S12), as shown in FIG. 14, the control unit 22 uses the first end rotation motor 51c to center the axis C1 of the stud W1 via the first end support 51a. The stud W1 is rotated in the rotation direction B. Then, from the direction intersecting the axis C1, the outer ring jig passes between the outer peripheral surface W5 of the stud W1 and the inner peripheral surfaces 52d and 52e of the set jig 52 through the chute 52c provided in the set jig 52. A predetermined number of needles W2 are assembled by the drive cylinder 54b via the assembly rod 54a (see FIG. 15), and the process proceeds to step S13.
Since the needle W2 is inserted from the direction intersecting the axis of the cam follower W, the same manufacturing method can be used for the cam follower using the retainer and the cam follower not using the retainer.
The direction in which the needle W2 is assembled is more preferably a direction orthogonal to the axis C1 of the stud W1. This is because the configuration of the setting jig 52 and the rotating member incorporating means 54 can be simplified.

  Next, in the outer member initial assembly step (step S13), as shown in FIG. 16, the control unit 22 drives the outer ring jig drive cylinder 55b by the valve switching unit 21 to move the first end support 51a. Move in the first transport direction D1. Then, the outer ring W3 is assembled to the plurality of needles W2 along the axis C1 direction of the stud W1 from the other end G3 side of the plurality of needles W2 in the direction of the axis C1 of the stud W1 to the intermediate portion G2.

  Next, in the jig removing step (step S14), the control unit 22 drives the one jig cylinder 53a and the second jig cylinder 53b by the valve switching unit 21, as shown in FIG. Then, the first jig 52a is moved upward in the vertical direction F and the second jig 52b is moved downward in the vertical direction F, and the set jig 52 is divided and removed from the stud W1 and the plurality of needles W2.

Finally, in the outer member final assembly step (step S15), as shown in FIG. 18, the control unit 22 drives the outer ring jig drive cylinder 55b by the valve switching unit 21 to move the first end support 51a. Move in the first transport direction D1. Then, the outer ring W3 is assembled to the plurality of needles W2 over the entire length of the plurality of needles W2 in the direction of the axis C1 of the stud W1.
The assembly of the cam follower W in the assembly apparatus 5 is completed by the above process.

  Thus, since the cam follower W of the present invention is manufactured by the cam follower manufacturing system 1 described above, clogging of the conveyed needle W2 can be prevented, and scratches generated on the needle W2 can be suppressed. Accordingly, rotation about the axis of the cam follower W can be stabilized.

As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The change of the structure of the range which does not deviate from the summary of this invention, etc. are included.
For example, in the above-described embodiment, an operator who operates the cam follower manufacturing system 1 uses the common axis line C2 of the inner peripheral surface 52d of the first jig cylinder 53a and the inner peripheral surface 52e of the second jig 52b, and the retainer. Arranged so that the axis C1 of the stud W1 assembled with W4 has the same axis. The worker also assembled the outer ring W3 to the outer peripheral surface of the first end support 51a.
However, the cam follower manufacturing system 1 may be newly provided with a stud supply device and an outer ring supply device that automatically perform the above-described operation under the command of the control unit 22.

In the above embodiment, the first transport direction D1 and the second transport direction E1, which are both parallel to the horizontal plane, are orthogonal to each other. However, the first transport direction D1 and the second transport direction E1 may be in a crossing relationship.
In the above embodiment, the pressing surface 41a is orthogonal to the second conveyance direction E1, but the pressing surface 41a may intersect the second conveyance direction E1.

  In the above embodiment, the needle W2 is conveyed from the first position P1 to the third position P3 through the second position P2 provided with the stepped portion 42b by the pressing surface 41a provided on the separation rod 41. . However, the needle W2 may be conveyed by the separation rod 41 from the first position P1 to the second position P2.

In the above embodiment, the pressing surface 41a is provided with the splash prevention surface 41c and the protrusion prevention surface 41d. However, it is not necessary to provide the spring-up preventing surface 41c and the pop-out preventing surface 41d on the pressing surface 41a. For example, it is possible to prevent the needle W2 from jumping up from the upper support surface 42a or to prevent the needle W2 from jumping out in the second transport direction E1 by applying wind to the pressing surface 41a obliquely from above. It is.
In addition, the separation device 4 of the cam follower manufacturing system 1 of the above embodiment transported the needle W2. Only the separating device 4 may be taken out from the cam follower manufacturing system 1 and the separating device 4 may be used to separate a rod-shaped workpiece such as a tube screw or a rod screw.

4 Separation device (work separation device)
41a Press surface 41c Bounce-up prevention surface 41d Jump-out prevention surface 42 Upper support base (support base)
42a Upper support surface (support surface)
42b Step 45 Second conveying means 46 First conveying means C Needle axis (workpiece axis)
D1 First transport direction E1 Second transport direction P1 First position P2 Second position W Cam follower W2 Needle (workpiece)
W11 Needle bearing

Claims (10)

A workpiece separation device that has a rod-like shape and separates the workpiece from a workpiece that is continuously conveyed in the axial direction of the workpiece,
First conveying means for conveying the workpiece in a first conveying direction parallel to the horizontal plane and along the axis of the workpiece;
A support surface disposed parallel to the horizontal surface, and a support base on which the work is placed at a first position on the support surface by the first transport means;
A second surface having a pressing surface for transporting the workpiece from the first position to a second position provided with a step portion in a second transport direction intersecting the first transport direction on the support surface. Transportation means,
In the step portion, the support surface on the second transport direction side from the second position is offset downward by a predetermined amount. In the workpiece separation apparatus according to claim 1,
The workpiece separating apparatus, wherein the pressing surface is provided with a bounce preventing surface for preventing the workpiece from jumping up from the support surface. In the workpiece separation apparatus according to claim 1 or 2,
An apparatus for separating a workpiece, wherein the pressing surface is provided with a pop-out preventing surface for preventing the work from popping out in the second conveying direction. In a workpiece separation method for separating a single workpiece from a workpiece that has a rod-like shape and is continuously transported in the axial direction of the workpiece,
A first conveying step of conveying the workpiece in a first conveying direction parallel to the horizontal plane and along the axis of the workpiece, and feeding the workpiece to a first position on a support surface arranged parallel to the horizontal plane; ,
Second transport for transporting the workpiece by a pressing surface from the first position to a second position where a step portion is provided in a second transport direction intersecting the first transport direction on the support surface. With process,
In the step portion, the support surface on the second transport direction side from the second position is offset downward by a predetermined amount. In the separation method of the work according to claim 4,
The method for separating a workpiece, wherein the pressing surface is provided with a splash prevention surface for preventing the workpiece from jumping up from the support surface. In the separation method of the workpiece according to claim 4 or 5,
A workpiece separation method, wherein the pressing surface is provided with a pop-out prevention surface that prevents the workpiece from jumping out in the second transport direction. Using the workpiece separation method according to any one of claims 4 to 6,
Separating a predetermined number used for one needle bearing from a plurality of needles conveyed to the second position, and inserting the predetermined number of needles from a direction intersecting an axis of the needle bearing. A method for manufacturing a needle bearing characterized by the following. Using the workpiece separation method according to any one of claims 4 to 6,
Separating a predetermined number used for one cam follower from a plurality of needles conveyed to the second position, and inserting the predetermined number of needles from a direction intersecting an axis of the cam follower. To manufacture a cam follower.   A needle bearing manufactured by the needle bearing manufacturing method according to claim 7.   A cam follower manufactured by the method for manufacturing a cam follower according to claim 8.

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