JP5116840B2 - Pin positioning jig and pin mounting device - Google Patents

Description

  The present invention relates to a pin positioning jig and a pin mounting device used when mounting a cylindrical pin as a child part on a work (parent part) such as a machine part or an electronic part, and in particular, an automatic transmission for a vehicle or the like. The present invention relates to a pin positioning jig and a pin mounting device for positioning a pin at a predetermined angular position around an axis when a pin that rotatably supports the planetary gear is press-fitted into a carrier in a planetary gear mechanism applied to the above.

A planetary gear mechanism applied to an automatic transmission or the like mounted on a vehicle includes a sun gear, an annular gear, a plurality of planetary gears meshed with the sun gear and the annular gear, a carrier that supports the planetary gear so as to rotate and revolve, and a planet. A pin or the like that rotatably supports the gear with respect to the carrier is provided.
In this planetary gear mechanism, the planetary gear is rotatably supported by a pin through a needle bearing in order to reduce wear and resistance, and a lubricating oil passage is provided in the pin to supply lubricating oil to the bearing region. What is formed is known.

  By the way, as a conventional pin mounting device for mounting a pin as described above to a carrier, a cylindrical pin has directionality in its axial direction (that is, a lubricating oil passage having a distinction between upward and downward is provided. On a workpiece receiving plate that holds a carrier incorporating a planetary gear, a lifting plate that is driven to move up and down below the workpiece receiving plate, a cylinder that drives the lifting plate, and a lifting plate A centering guide and a work having a reduced diameter portion that is inserted into a lubricating passage of a pin that is held directly through the work receiving plate from below to align the planetary gear insertion hole and the carrier insertion hole. Press the carrier holding member that holds the carrier held on the receiving plate from above, and the pin that is loaded directly above the carrier into the insertion hole. A pressing member that presses from above, a sensor that determines whether the reduced diameter portion of the centering guide has entered the lubricating oil passage of the carried-in pin based on the inclined state of the pin, and confirms the vertical direction of the pin, etc. There is known a pin that can be mounted without making a mistake in the vertical direction (see, for example, Patent Document 1).

On the other hand, in the planetary gear mechanism, in order to smoothly and efficiently supply the lubricating oil to the bearing area of the planetary gear using the centrifugal force and centrifugal pump action caused by the rotation of the carrier, In addition to the lubricating oil passage extending in the axial direction, a lubricating oil hole penetrating in the radial direction is provided, and it is proposed to mount the pin so that the lubricating oil hole is directed outward in the radial direction of the carrier. .
However, the conventional pin mounting device described above is intended for pins having directionality in the axial direction (the route of the lubricating oil passage is different depending on whether it is upward or downward), and pins having directionality around the axis (circumferential direction). It is difficult to position and mount at a predetermined angle.
In addition, the above-described conventional pin mounting device requires a dedicated mechanism (elevating plate, cylinder, etc.) for moving the centering guide up and down, and the components cannot be concentrated and arranged, resulting in a complicated structure. This increases the size and cost of the apparatus.
Japanese Patent Laid-Open No. 7-314266

  The present invention has been made in view of the circumstances of the prior art described above, and the object of the present invention is around the axis (circumferential direction) while simplifying the structure, reducing the size of the apparatus, reducing the cost, and the like. An object of the present invention is to provide a pin positioning jig and a pin mounting device which can direct a cylindrical pin having directionality to a predetermined angle and mount it on a work (parent part) with high accuracy.

A pin positioning jig of the present invention that achieves the above object is a pin positioning jig for positioning a pin so as to mount a cylindrical pin in an insertion hole of a work, and is a pin for aligning the pin with an insertion hole of a work. accommodates comprises a jig main body is fitted to the work, the restriction mechanism provided on the jig main body to direct the pin at a predetermined angular position of its axis to regulate the rotation of the pin, the regulatory mechanism An engagement member that can move between an engagement position that enters and engages from the radially outer side of the pin and a disengagement position that disengages from the recess, with respect to the recess formed offset from the center on the upper end surface of the pin And a biasing member that biases the engagement member toward the engagement position.
According to this configuration, when the cylindrical pin is mounted at a predetermined angular position with respect to the insertion hole of the workpiece, the pin is accommodated in the jig body and the rotation is restricted by the restriction mechanism. A positioning jig is fitted to the workpiece.
As a result, the pin can be mounted to the insertion hole of the workpiece with high accuracy in a state where the pin is aligned with the insertion hole of the workpiece and the pin is positioned at a predetermined angular position with respect to the insertion hole of the workpiece. Moreover, when carrying the pin positioning jig which accommodated the pin, it is possible to prevent the positional deviation of the pin by positioning with the restriction mechanism.
In particular, since the engaging member and the urging member that reciprocate between the engagement position and the disengagement position (for example, linearly reciprocate or swing and reciprocate) are employed as the restriction mechanism, the structure is simplified. Thus, miniaturization and the like can be achieved.

In the pin positioning jig configured as described above, the engaging member is formed to be swingable, and is an engaging portion that can be engaged with the concave portion on one end side, and a force for releasing the engaging portion from the concave portion on the other end side. It is possible to adopt a configuration having an operation unit that exerts the following.
According to this configuration, when the pin is accommodated in the jig main body, the operation portion of the engagement member is pushed down to keep the engagement portion away from the pin accommodation area (for example, the accommodation hole), and the pin is held at a predetermined angle. It is possible to engage the engaging portion of the engaging member by entering the concave portion of the pin by the urging force of the urging member only by releasing the operation portion after being oriented in the position and then being accommodated in the jig body. In this way, the pins can be accommodated in the jig body while positioning the pins by a simple operation.

The pin mounting device of the present invention that achieves the above object is a pin mounting device that mounts a cylindrical pin in an insertion hole of a workpiece, and accommodates the pin in the workpiece so as to align the pin with the insertion hole of the workpiece. A pin positioning jig and a pin positioning jig, which are provided on the jig main body to restrict the rotation of the pin, and the pin positioning jig are fitted from above to direct the fitting jig body and the pin at a predetermined angular position around the axis. A regulating mechanism, a table for placing the workpiece, a pressing mechanism for pressing the jig body of the positioning jig toward the workpiece, and a press-fitting mechanism for pressing the pin into the insertion hole of the workpiece while the pressing mechanism is activated. Is a mechanism that can move between an engagement position for entering and engaging from the radially outer side of the pin and a disengagement position for releasing from the recess with respect to the recess formed offset from the center on the upper end surface of the pin. Comprising a member and a biasing member for urging the engaging member in the engaged position.
According to this configuration, with the pin positioned by the pin positioning jig, the workpiece fitted with the pin positioning jig is placed on the table, the jig body is pressed and fixed by the pressing mechanism, and the pin is moved by the press-fitting mechanism. Can be press-fitted into the insertion hole.
In particular, since the engaging member and the urging member are employed as the restricting mechanism, the structure can be simplified, downsized, and the like.

In the pin mounting device configured as described above, the press-fitting mechanism includes a lift head that can be lifted and lowered relative to the table, a lift drive unit that lifts and lowers the lift head, and a press-fit rod that is provided in the lift head and press-fits the pin into the insertion hole. The structure including these can be adopted.
According to this configuration, since the elevating head, the elevating drive unit, and the press-fit rod are employed as the press-fit mechanism, the press-fit operation can be smoothly performed while achieving simplification of the structure, size reduction of the apparatus, and the like.

In the pin mounting device having the above configuration, the pressing mechanism includes a pressing member that is supported so as to be movable up and down within a predetermined range with respect to the lifting head, and a biasing spring that biases the pressing member downward. Can be adopted.
According to this configuration, as the pressing mechanism, the pressing member supported by the elevating head and the urging member that urges the pressing member downward are employed, so compared to the case where a dedicated member that supports the pressing member is provided, The number of parts can be reduced, the structure around the lifting head can be simplified, and the apparatus can be miniaturized.

The pin mounting device having the above-described configuration may employ a configuration that further includes a detection mechanism that detects whether or not the pin is oriented at a predetermined angular position.
According to this configuration, when the pin is deviated from the predetermined angular position, the detection mechanism detects this, so that the pin press-fitting operation can be stopped in advance.

In the pin mounting device having the above-described configuration, the detection mechanism is supported so as to be movable in the vertical direction with respect to the press-fit rod, is urged downward so as to protrude from the lower end surface of the press-fit rod, and the pin is at a predetermined angular position. A mover that can enter the recess formed by being deviated from the center on the upper end surface of the pin when it is oriented, and a mover that moves when the pin is out of a predetermined angular position. It is possible to adopt a configuration including a sensor that generates a detection signal in conjunction with an operation of being pushed up by being in contact with the upper end surface of the lens.
According to this configuration, when the pin is oriented at a predetermined angular position and accommodated in the positioning jig, the lower end portion of the mover enters the concave portion of the pin while the lower end surface of the press-fit rod is in contact with the pin. The sensor can detect that the pin is oriented at a predetermined angular position, while the lower end surface of the press-fit rod is in contact with the upper end surface of the pin. When the lower end abuts on the upper end surface of the pin and the mover is lifted upward, the sensor emits a signal in conjunction with the operation of the mover and can detect that the pin is displaced from the predetermined angular position. . In addition, as the detection mechanism, a mover that is supported by the press-fit rod, and a sensor that emits a signal in conjunction with the movement of the mover, it is unnecessary to process image information required when using a visual sensor or the like. Simplification of the structure, cost reduction, and the like can be achieved, and erroneous detection and the like can be reliably prevented because of the mechanical contact operation.

In the pin mounting device having the above-described configuration, the restricting mechanism disengages from the recess and the engagement position where the pin enters and engages from the outside in the radial direction of the pin with respect to the recess formed by being deviated from the center on the upper end surface of the pin. An engagement member that can move between the disengagement position and an urging member that urges the engagement member toward the engagement position, and the detection mechanism is supported to be movable in the vertical direction with respect to the press-fit rod. When the pin is urged downward so as to protrude from the lower end surface of the press-fit rod and the pin is oriented at a predetermined angular position, it does not contact the recess formed by being deviated from the center on the upper end surface of the pin. And a sensor that emits a detection signal in conjunction with an operation in which the mover is pushed up by abutting against the upper end surface of the pin when the pin is in a state of being deviated from a predetermined angular position. Recess with which the member engages And the recess mover can enter in a non-contact, is formed as a recess in the upper end surface of the pin, it is possible to adopt a configuration.
According to this configuration, since the concave portion into which the engaging portion engages and the concave portion into which the movable element can enter without contact are one concave portion, when the pin is oriented and assembled to the jig body, the single concave portion Serves as a mark for determining a predetermined angular position, and can prevent erroneous assembly.

In the pin mounting device having the above-described configuration, it is possible to adopt a configuration in which the press-fitting rod is detachably formed with respect to the lifting head.
According to this configuration, since the press-fit rod can be exchanged according to the type of pin, the pin mounting operation can be performed in accordance with the type of pin (model of the planetary gear mechanism).

  According to the pin positioning jig and the pin mounting device configured as described above, a cylindrical pin having directionality around the axis (circumferential direction) can be achieved while achieving simplification of the structure, miniaturization of the device, cost reduction, and the like. It can be mounted on a workpiece (parent part) with high precision by directing it at a predetermined angle. In particular, in a planetary gear mechanism applied to a vehicular automatic transmission or the like, a pin that rotatably supports the planetary gear is a carrier. When press-fitting into the pin, the pin can be positioned and mounted with high accuracy in the direction of a predetermined angle around the axis.

It is a top view which shows the pin positioning jig concerning this invention. The pin positioning jig which concerns on this invention shows the state fitted by the workpiece | work (partial cross section) It is a perspective view which shows the pin used as the object of mounting | wearing in this invention. It is a side view. It is a side view which shows one Embodiment of the pin mounting apparatus which concerns on this invention. It is the elements on larger scale which expanded a part of pin mounting apparatus shown in FIG. FIG. 5 is a side view (including a partial cross section) showing a press-fit rod included in the pin mounting device shown in FIG. 4. It is a partial side view explaining operation | movement of the pin positioning jig and pin mounting apparatus based on this invention (a partial cross section is included). It is a partial side view explaining operation | movement of the pin positioning jig and pin mounting apparatus based on this invention (a partial cross section is included). It is a partial side view explaining operation | movement of the pin positioning jig and pin mounting apparatus based on this invention (a partial cross section is included). It is a partial side view explaining operation | movement of the pin positioning jig and pin mounting apparatus based on this invention (a partial cross section is included). It is a partial side view explaining operation | movement of the pin positioning jig and pin mounting apparatus based on this invention (a partial cross section is included).

Explanation of symbols

W Work W1 Carrier W2 Planetary gear W3 Needle bearing W4 Insertion hole W5 Temporary pin 10 Base 20 Table 30 Vertical frame 31 Guide part 40 Lift head (press-fit mechanism)
41 Guided portion 42 Connecting portion 43 Fitting portion 44 Housing portion 45 Guide portion 46 Upper end surface 47 Lower end surface 50 Lift drive unit (press-fit mechanism)
51 Motor 52 Ball screw 53 Ball nut 60 Press-fit rod (press-fit mechanism)
61 Tip 61a Lower end surface 62 Fitting portion 62a Upper end surface 63 Gutter portion 64 Guide hole 65 Housing portion 70 Pressing member (pressing mechanism)
71 disc part 71a contact part 71b through hole 72 rod part 72a collar part 80 biasing spring (biasing member, pressing mechanism)
90 detection mechanism 91 mover 91a lower end 91b upper end 91c collar 91d biasing spring 91e collar 92 interlocking arm 93 biasing spring 94 sensor M pin positioning jig 100 jig main body 101 central opening 102 receiving hole 103 fixing recess 104 fitting Joint part 110 Restriction mechanism 111 Holder 111a Support shaft 111b, 111c Stopper wall 111d Space part 112 Engagement member 112a Engagement part 112b Operation part 113 Energizing spring (urging member)
RT rotary table HU Work holding unit

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. In this embodiment, as shown in FIG. 2, the workpiece W is a part of a planetary gear mechanism mounted on an automatic transmission device of an automobile, and includes a carrier W1, a planetary gear W2, a needle bearing W3, and a planetary gear. In order to temporarily assemble W2 to the carrier W1, a temporary pin (process pin) W5 inserted into an insertion hole W4 defined by the carrier W1 and the needle bearing W3 is formed. An original pin P (actual pin) is attached to the workpiece W so as to replace the temporary pin W5.

As shown in FIG. 3, the pin P (actual pin) is formed in a cylindrical shape, and is formed to extend in the radial direction D at a position deviated from the center (axis line L) on the upper end surface P1 and the upper end surface P1. A groove-shaped recess P2, a lubricating oil passage P3 extending in the direction of the axis L, a lubricating oil hole P4 and a lubricating oil hole P5 formed so as to communicate with the lubricating oil passage P3 and penetrate in the radial direction are provided. Here, the recess P2 is formed at the same angular position as the lubricating oil hole P4 around the axis L (circumferential direction). The lubricating oil hole P4 and the lubricating oil hole P5 are formed at positions shifted from each other by 180 degrees around the axis L (circumferential direction). Further, in the lubricating oil hole P4 and the lubricating oil hole P5, the lubricating oil hole P4 is formed closer to the upper end surface P1 than the lubricating oil hole P5 in the axis L direction.
Thus, since the pin P is provided with one concave portion P2 in the upper end surface P1 at an angular position corresponding to the lubricating oil hole P4, when the concave portion P2 is confirmed, the pin P is mounted on the pin positioning jig M. It can be used as a landmark.

As shown in FIGS. 1 and 2, the pin positioning jig M includes a jig main body 100 formed in a substantially disc shape, a plurality of restriction mechanisms 110 that are fixed to the upper part of the jig main body 100 and restrict the rotation of the pins P, and the like. It has.
As shown in FIGS. 1 and 2, the jig body 100 includes a circular central opening 101, a plurality of cylindrical receiving holes 102 arranged in the circumferential direction around the central opening 101, and each receiving hole. A fixed recess 103 provided on the outer side in the radial direction with respect to 102, a fitting portion 104 fitted to the carrier W1 of the workpiece W, and the like are provided.

The central opening 101 is formed so that a sun gear meshed with the planetary gear W2 of the workpiece W can be inserted.
The receiving hole 102 is inserted into the pin P to restrict the positional deviation in the direction perpendicular to the axis L, align with the insertion hole W4 of the workpiece W, and has an inner diameter dimension that allows the pin P to be easily inserted manually. Is formed.
The fixing recess 103 is formed so as to partially embed the holder 111 of the restriction mechanism 110 and fix it with a fastening screw (not shown) or the like.

As shown in FIGS. 1, 2, and 7, the restriction mechanism 110 includes a holder 111 that is fixed to the fixing recess 103 of the jig main body 100, an engagement member 112 that is swingably supported with respect to the holder 111, A biasing spring 113 or the like as a biasing member that biases the combined member 112 toward the accommodation hole 102 (pin P side) is provided.
As shown in FIG. 7, the holder 111 is fixed to a fixing recess 103 of the jig main body 100 and fixed by using a fastening screw (not shown) or the like, and a support shaft 111a that supports the engaging member 112 in a swingable manner. The stopper wall 111b for stopping the engaging member 112 at the engaging position where the engaging member 112 is engaged with the concave portion P2 of the pin P, the stopper wall 111c for stopping the engaging member 112 at the releasing position where the engaging member 112 is released from the concave portion P2, and the biasing spring 113 are accommodated. Space portion 111d and the like.
As shown in FIG. 7, the engaging member 112 is formed in a substantially T shape and is supported swingably by the support shaft 111 a, and can be engaged with the concave portion P <b> 2 of the pin P on one end side thereof. 112a, and an operation portion 112b that exerts a force for releasing the engaging portion 112a from the recess P2 on the other end side.
As shown in FIG. 7, the urging spring 113 is a coil-shaped compression spring, and is arranged by being compressed by a predetermined amount in the space 111 d of the holder 111, so that the engagement member 112 is directed toward the engagement position, that is, A biasing force is exerted so that the engaging portion 112a engages with the concave portion P2 of the pin P.

Then, the engagement member 112 stops at the engagement position where it is brought into contact with the stopper wall 111b by the urging force of the urging spring 113 and engages with the concave portion P2 of the pin P in a state where no force is applied to the operation portion 112b. By depressing the operating portion 112b against the urging force of the urging spring 113, the operation portion 112b is brought into contact with the stopper wall 111c to stop at a disengagement position where the pin P is disengaged from the recess P2.
As described above, by adopting the holder 111 fixed to the jig body 100, the engaging member 112 swingably supported by the holder 111, and the biasing spring 113 housed in the holder 111 as the regulating mechanism 110 , The restriction mechanism 110 can be modularized, and the pin P can be oriented and held at a predetermined angular position around the axis L while achieving simplification and downsizing of the structure.

Next, the assembly procedure of the pin P and the assembly of the pin positioning jig M and the workpiece W will be described.
First, as shown in FIG. 2, a workpiece W is prepared in which a planetary gear W2 is fitted into a carrier W1 and a temporary pin W5 is inserted into an insertion hole W4, and pin positioning is performed so that the workpiece W is fitted into the carrier W1. The jig body 100 of the jig M is fitted.
At this time, as shown in FIG. 7, the jig main body 100 is positioned with respect to the workpiece W by the upper end region of the temporary pin W <b> 5 entering the lower region of the accommodation hole 102.

Subsequently, the operating portion 112b is pushed down to move the engaging member 112 to the disengagement position. In this state, the concave portion P2 is oriented radially outward of the jig main body 100 and inserted into the accommodation hole 102 of the jig main body 100.
When the depression of the operation portion 112b is released, the engagement member 112 is moved to the engagement position by the urging force of the urging spring 113, and the engagement portion 112a enters the recess P2 of the pin P and engages. Accordingly, the pin P is positioned and held at a predetermined angular position around the axis L so that the recess P2, that is, the lubricating oil hole P4 faces radially outward, and the pin P is aligned with the insertion hole W4 of the workpiece W. Matching is done.
Thus, the jig P can be accommodated in the jig body 100 while positioning the pin P by a simple operation. Further, even if the pin positioning jig M is carried after the pins P are attached to the pin positioning jig M, the positional deviation of the pins P can be prevented.

As shown in FIGS. 4 and 5, the pin mounting device is provided on the base 10 and the base 10. The table 20 is placed on the base 10 and places the workpiece W fitted with the pin positioning jig M from above. The fixed vertical frame 30, the lifting head 40 supported to be movable up and down with respect to the vertical frame 30, the lifting drive unit 50 that drives the lifting head 40 to move up and down, the press-fit rod 60 that is detachably connected to the lifting head 40, and the lifting A pressing member 70 supported so as to be movable up and down with respect to the head 40, a biasing spring 80 as a biasing member that biases the pressing member 70 downward, a press-fit rod 60, and a detection mechanism provided in the lifting head 40 90, a control panel (not shown) for performing various controls is provided.
Further, on the base 10, a rotary table provided with a work holding unit HU for carrying the work W fitted with the pin positioning jig M from above onto the table 20 and carrying out the work W after the press-fitting process from the table 20. RT etc. are arranged.

As shown in FIG. 4, the table 20 is formed to place and hold the pin positioning jig M and the workpiece W transferred from the rotary table RT at a predetermined height position.
The table 20 may be provided with a fixing mechanism that temporarily fixes the held work W, or a drive mechanism that moves and holds the held work W two-dimensionally or three-dimensionally.
As shown in FIG. 4, the vertical frame 30 is fixed upright on the base 10 so as to extend in the up-down direction Z, and has a guide portion 31 that guides the elevating head 40 so as to be movable up and down in the up-down direction Z. In addition, the elevating drive unit 50 is held inside or outside the wall.

  As shown in FIGS. 4 and 5, the elevating head 40 is connected to the guide portion 31 of the vertical frame 30 so as to be movable up and down and guided in the vertical direction Z, and the ball nut of the elevating drive unit 50. 53, a connecting portion 42 to which the press-fitting rod 60 is detachably attached, a housing portion 44 for housing a part of the detection mechanism 90, and a rod portion 72 of the pressing member 70 are guided in a vertically movable manner. And the lower end surface 47 that abuts the upper end portion of the biasing spring 80, and the like.

As shown in FIG. 4, the elevating drive unit 50 includes a motor 51 fixed to the upright frame 30, a ball screw 52 that is directly connected to the motor 51 and extends in the up-down direction Z, and is screwed to the ball screw 52 to connect the elevating head 40. A ball nut 53 connected to 42 is provided.
Then, when the ball screw 52 rotates in one direction due to the activation of the motor 51, the elevating drive unit 50 lowers the elevating head 40 via the ball nut 53, while when the ball screw 52 rotates in the other direction, the ball nut 53 The raising / lowering head 40 is raised via this.
Here, the screw feed mechanism using the ball screw 52 and the ball nut 53 is shown as the lifting drive unit, but the present invention is not limited to this, and a hydraulic or pneumatic cylinder actuator or solenoid is used. An electromagnetic actuator or the like may be employed.

As shown in FIG. 6, the press-fitting rod 60 defines a lower end surface 61 a that can abut on the upper end surface P <b> 1 of the pin P to be press-fitted, and a cylindrical shape that can be inserted into the receiving hole 102 of the positioning jig M during press-fitting. The movable portion 91 that is fitted to the distal end portion 61 and the fitting portion 43 of the elevating head 40 and delimits the upper end surface 62a, the collar portion 63, and the movable element 91 that forms part of the detection mechanism 90 is moved in the vertical direction Z. A guide hole 64 for guiding freely, a flange portion 91c provided in the middle of the movable element 91, a housing portion 65 for housing the biasing spring 91d, and the like are provided.
The press-fit rod 60 is detachably fixed to the fitting portion 43 of the elevating head 40. That is, by making the press-fit rod 60 detachable from the lifting head 40, the press-fit rod 60 can be exchanged according to the type of the pin P.

That is, a press-fitting mechanism that press-fits the pin P into the insertion hole W4 of the workpiece W in a state where the pressing mechanism is operated is configured by the elevating head 40, the elevating drive unit 50, the press-fitting rod 60, and the like.
As described above, by adopting the elevating head 40, the elevating drive unit 50, and the press fitting rod 60 as the press fitting mechanism, it is possible to smoothly perform the press fitting operation while achieving simplification of the structure, miniaturization of the apparatus, and the like. it can.

As shown in FIGS. 5 and 8, the pressing member 70 is connected to the disc portion 71 having a contact portion 71 a whose outer edge portion protrudes downward, and the guide portion 45 of the elevating head 40. A rod portion 72 and the like that are freely passed are provided.
As shown in FIG. 5, the disc portion 71 includes a through hole 71 b through which the press-fit rod 60 passes without contact. The rod portion 72 includes a flange portion 72 a that can come into contact with the upper end surface 46 of the elevating head 40.
As shown in FIG. 5, the urging spring 80 is a coil-shaped compression spring, and its lower end is in contact with the upper surface of the disk portion 71, and its upper end is in contact with the lower end surface 47 of the elevating head 40. Then, it is fitted around the rod portion 72 while being compressed to a predetermined compression allowance.
The pressing member 70 is urged downward by the urging spring 80 when not in operation, and the collar portion 72a abuts against the upper end surface 46 and stops. In this state, when the elevating head 40 is lowered and its abutting portion 71a abuts on the jig main body 100 (the upper surface thereof) of the pin positioning jig M, only the elevating head 40 remains stopped without being pushed down. Is lowered, and the urging spring 80 is compressed by the lower end surface 47 of the elevating head 40. That is, the pressing member 70 is configured to press the jig main body 100 of the pin positioning jig M toward the work W (and the table 20) by using the biasing force generated by the compression of the biasing spring 80.

That is, a pressing mechanism that presses the jig main body 100 of the pin positioning jig M toward the workpiece W is configured by the pressing member 70, the biasing spring 80, and the like.
Thus, when the pressing member 70 supported by the elevating head 40 and the urging spring 80 that urges the pressing member 70 downward are employed as the pressing mechanism, a dedicated member that supports the pressing member 70 is provided. In comparison, the number of parts can be reduced, the structure around the lifting head 40 can be simplified, and the apparatus can be miniaturized.

  As shown in FIGS. 5 and 6, the detection mechanism 90 is disposed in the accommodating portion 44 so as to be interlocked with the vertical movement of the movable element 91 supported by the press-fit rod 60 so as to be movable in the vertical direction Z. Interlocking arm 92, biasing spring 93 disposed in the housing 44 to bias the interlocking arm 92 in one direction, and a sensor fixed to the outer wall of the lifting head 40 to generate a detection signal in conjunction with the interlocking arm 92 94 etc.

As shown in FIG. 6, the mover 91 is formed so as to demarcate a lower end 91a, an upper end 91b, a flange 91c, a biasing spring 91d, a flange 91e, and the like, and is inserted into the guide hole 64 of the press-fit rod 60. The flange portion 91c and the biasing spring 91d are accommodated in the accommodating portion 65, and the lower end portion 91a protrudes from the lower end surface 61a of the press-fit rod 60 so as to be able to protrude and retract. The upper end portion 91 b and the flange portion 91 e are biased downward and are held in a state of protruding from the upper end surface 62 a of the press-fit rod 60.
When the pin 91 is in a state in which the pin P is oriented at a predetermined angular position, the lower end 91a of the mover 91 can enter the recess P2 of the pin P in a non-contact manner, as shown in FIG. When the pin P is in a state of being deviated from the predetermined angular position, as shown in FIGS. 10 and 11, the lower end 91a thereof is pushed up against the upper end surface P1 of the pin P, and the upper end 91b is lifted up. It has become.

As shown in FIG. 5, the interlocking arm 92 is formed in a swingable lever shape, and is urged to rotate counterclockwise by the urging spring 93, and one end portion 92 a is formed on the upper end portion 91 b of the mover 91. The other end 92 b is in contact with the sensor 94.
As shown in FIG. 5, the sensor 94 is fixed to the outer wall of the elevating head 40. When the interlock arm 92 rotates and the other end 92b moves downward and leaves, an output signal is generated. ing.

That is, according to the detection mechanism 90, when the pin P is oriented at a predetermined angular position and is accommodated in the positioning jig M, the mover 91 is in a state where the lower end surface 61a of the press-fit rod 60 is in contact with the pin P. Since the lower end portion 91a of this pin enters the concave portion P2 of the pin P and is not pushed upward, the sensor 94 can detect that the pin P is oriented at a predetermined angular position. On the other hand, when the lower end portion 91a of the press-fit rod 60 is in contact with the upper end surface P1 of the pin P and the lower end portion 91a of the mover 91 is in contact with the upper end surface P1 of the pin P, the mover 91 is lifted upward. A sensor 94 issues an output signal via an interlocking arm 92 that is interlocked with the operation of the mover 91, and detects that the pin P is displaced from a predetermined angular position.
Thus, as the detection mechanism 90, the movable element 91 supported by the press-fit rod 60, the interlocking arm 92 that interlocks with the operation of the movable element 91, the sensor 94 that generates an output signal in conjunction with the interlocking arm 92, and the like are employed. This eliminates the need to process image information required when using a visual sensor, etc., achieves simplification of the structure, lower costs, etc., and prevents false detections reliably based on mechanical contact operation. can do.

  As described above, the concave portion P2 with which the engaging portion 112a of the engaging member 112 engages and the concave portion P2 into which the lower end portion 91a of the mover 91 can enter without contact are one on the upper end surface P1 of the pin P. Since it is formed as a recess, when the pin P is oriented and assembled to the jig body 100, one recess P2 serves as a mark for determining a predetermined angular position, and erroneous assembly can be prevented in advance.

Next, the operation of the pin mounting device will be described with reference to FIGS.
First, when the pin positioning jig M on which the pin P is set is fitted to the work W and is carried onto the table 20 by the rotary table RT and the work holding unit HU, the lift head 40 is driven by the lift drive unit 50. Is driven downward.
As shown in FIG. 8, when the abutting portion 71 a of the holding member 70 abuts on the outer peripheral area of the upper surface of the jig body 100 and the elevating head 40 is further lowered, the urging spring 80 is compressed, and the urging force The pressing member 70 presses the jig main body 100 toward the workpiece W and the table 20. Thereby, the jig main body 100 and the workpiece | work W are hold | maintained so that it may not mutually position-shift.

  When the pin P is oriented at a predetermined angular position and is accommodated in the jig body 100, the lower end 91a of the mover 91 is moved into the recess P2 of the pin P as the elevating head 40, that is, the press-fit rod 60 is lowered. It enters in a non-contact manner, and the lower end surface 61a of the press-fit rod 60 (the front end portion 61) abuts on the upper end surface P1 of the pin P. Further, when the elevating head 40 is lowered, the tip 61 of the press-fit rod 60 enters the accommodation hole 102 and pushes down the pin P. As shown in FIG. 9, the pin P pushes down the temporary pin W5 and inserts the work hole W4. It is attached to.

On the other hand, as shown in FIG. 10, when the pin P is housed in the jig main body 100 in a state of being deviated from the predetermined angular position, the lower end portion 91 a of the mover 91 is lowered as the elevating head 40, that is, the press-fit rod 60 is lowered. 11, the upper end 91b of the movable element 91 is pushed up, the interlocking arm 92 rotates clockwise, and the sensor 94 operates to generate an output signal, as shown in FIG. .
Then, based on this output signal, a control signal is output by the control panel, and the lifting drive unit 50 generates a reverse driving force to raise the lifting head 40 and stop the press-fitting operation of the pin P. Thereby, the operator can correct the assembly of the pin P, and can thereafter start the press-fitting operation similar to that described above.
As described above, when the pin P is assembled with a deviation from the predetermined angular position, the detection mechanism 90 detects this, and therefore the press-fitting operation of the pin P is canceled before generation of yield products and unnecessary collection. Work etc. can be reduced.

In the above embodiment, the restriction mechanism that restricts the rotation of the pin P is shown as including the holder 111, the engaging member 112, and the urging spring 113, but is not limited thereto, and the rotation of the pin P is not limited thereto. Any other restriction mechanism can be employed as long as it can be directed to a predetermined angular position.
In the above-described embodiment, the detection mechanism 90 includes the movable element 91, the interlocking arm 92, the biasing spring 93, the sensor 94, and the like. However, the detection mechanism 90 is not limited thereto, and may be structurally permitted. The interlocking arm 92 and the biasing spring 93 may be eliminated, and the sensor 94 may be directly interlocked with the operation of the movable element 91.

  As described above, the pin positioning jig and the pin mounting device of the present invention have a cylindrical shape having a directivity around the axis (circumferential direction) while achieving simplification of the structure, miniaturization of the device, cost reduction, and the like. Can be mounted on a workpiece (parent part) with high precision by directing the pin at a predetermined angle, so that it can be applied to mounting of a pin in a planetary gear mechanism or the like applied to a vehicular automatic transmission or the like. In addition, it is also useful for other mechanical parts that need to be mounted with pins having directionality around the axis, or electronic devices.

Claims (9)

A pin positioning jig for positioning a pin in order to mount a cylindrical pin in a work insertion hole,
A jig main body that receives the pin and fits the work to align the pin with the insertion hole of the work, and a rotation of the pin provided on the jig main body to direct the pin to a predetermined angular position around its axis. and a regulation mechanism for regulating the,
The restricting mechanism moves between an engagement position where the pin enters from the radially outer side of the pin and engages and a disengagement position where the pin is separated from the recess, with respect to the recess formed offset from the center on the upper end surface of the pin. And an urging member that urges the engagement member toward the engagement position.
A pin positioning jig characterized by that . The engaging member is formed to be swingable, and has an engaging portion that can be engaged with the concave portion at one end side thereof, and an operation portion that exerts a force for detaching the engaging portion from the concave portion at the other end side. Have
The pin positioning jig according to claim 1 . A pin mounting device for mounting a cylindrical pin in a work insertion hole,
A jig main body that receives the pin and aligns the pin with the insertion hole of the work and is fitted on the work, and is provided on the jig main body to direct the pin to a predetermined angular position around its axis. A pin positioning jig including a regulating mechanism for regulating;
A table for placing a workpiece fitted with the pin positioning jig from above;
A pressing mechanism that presses the jig body of the positioning jig toward the workpiece;
A press-fitting mechanism that press-fits a pin into an insertion hole of a workpiece in a state in which the pressing mechanism is activated ;
The restricting mechanism moves between an engagement position where the pin enters from the radially outer side of the pin and engages and a disengagement position where the pin is separated from the recess, with respect to the recess formed offset from the center on the upper end surface of the pin. And an urging member that urges the engagement member toward the engagement position.
A pin mounting device characterized by that . The press-fit mechanism includes an elevating head that is movable up and down with respect to the table, an elevating drive unit that elevates and lowers the elevating head, and a press-fit rod that is provided in the elevating head and press-fits a pin into an insertion hole.
The pin mounting apparatus according to claim 3 . The pressing mechanism includes a pressing member that is supported in a vertically movable manner within a predetermined range with respect to the lifting head, and an urging spring that urges the pressing member downward.
The pin mounting device according to claim 4 . A detection mechanism for detecting whether or not the pin is oriented at the predetermined angular position;
The pin mounting apparatus according to claim 3 . The detection mechanism is supported so as to be movable in the vertical direction with respect to the press-fit rod, is urged downward so as to protrude from the lower end surface of the press-fit rod, and the pin is oriented to the predetermined angular position When the pin is in a state of being shifted from the predetermined angular position, the mover can move in a non-contact manner into a recess formed by being deviated from the center on the upper end surface of the pin. A sensor that emits a detection signal in conjunction with an operation that is pushed up by being in contact with
The pin mounting apparatus according to claim 6 . The restricting mechanism moves between an engagement position where the pin enters from the radially outer side of the pin and engages and a disengagement position where the pin is separated from the recess, with respect to the recess formed offset from the center on the upper end surface of the pin. And an urging member that urges the engagement member toward the engagement position.
The detection mechanism is supported so as to be movable in the vertical direction with respect to the press-fit rod, is urged downward so as to protrude from the lower end surface of the press-fit rod, and the pin is oriented to the predetermined angular position When the pin is in a state of being shifted from the predetermined angular position, the mover can move in a non-contact manner into a recess formed by being deviated from the center on the upper end surface of the pin. And a sensor that emits a detection signal in conjunction with the operation of being pushed up in contact with
The concave portion with which the engaging member engages and the concave portion into which the movable element can enter without contact are formed as one concave portion on the upper end surface of the pin.
The pin mounting apparatus according to claim 6 . The press-fit rod is detachably formed with respect to the lifting head.
The pin mounting device according to claim 4 .

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