JPH02217178A - Gage plate switching device - Google Patents

Abstract

PURPOSE:To facilitate the layout setting of the subject gage plate switching device by rotating a rotary plate by an angle where plural gage plates are arranged to the positions to be used selectively at the circumference of a rotary shaft. CONSTITUTION:The rotary plate 21 is segmented into plural ranges with respect to the rotary shaft A. The gage plates 23 are arranged so as to be housed in the respective segmented ranges and plate faces are fitted so as to face one another on the plate face 21a of the rotary plate 21. The gage plates 23 are provided with gage parts (gage chips) 22. The rotary plate 21 is rotated by an angle where the plural gage plates 23 are arranged to the positions to be used selectively with a rotary plate driving means (servomotor with a speed reducer) 27 at the circumference of the rotary shaft A. By this method, each gage plate is arranged at the common position to be used.

Description

Detailed Description of the Invention (Industrial Field of Application) This invention provides a plurality of gauge plates having gauge portions each having a shape corresponding to the cross-sectional shape of the workpiece, depending on the type of workpiece, and using these gauge plates as required. This invention relates to a gauge plate switching device that is selectively placed in a use position depending on the situation.

(Prior Art) As a conventional gauge plate switching device as described above, there is one shown in FIG. 5, for example (a similar device is described in Utility Model Application No. 11110/1983, which was previously filed by the present applicant). .

The gauge plate switching device indicated by reference numeral 1 in the figure positions a gauge plate 4 having a gauge portion 4a having a shape corresponding to the cross-sectional shape of the workpiece via a shaft 3 fixed to a bracket 2, depending on the type of workpiece to be positioned. Multiple sheets (only one sheet is shown in the figure)
, are pivotably supported on the bracket 2 so that the plate surfaces 4b of the gauge plates 4 are positioned parallel to each other, and the related gauge plates are oscillated on the bracket 2 in correspondence with each gauge plate. It is provided with a flat gauge plate switching cylinder 5 to be moved, and a stopper 6 (one of each is shown in the figure) for specifying the swing limit position of the gauge plate 2 to the usage position shown in the figure.
Here, each gauge plate 2 is provided with a flat clamp cylinder 9 that swingably supports a clamper 7 and that swings the clamper 7 via a link mechanism 8.

According to this gauge plate switching device 1, the gauge plate 4 having the gauge portion 4a of a desired shape is swung to the use position by the operation of the gauge plate switching cylinder 5 associated therewith, while the remaining gauge plates are 4 can be held in a standby position where it does not interfere with the workpiece by each gauge plate switching cylinder 5, and by this, the gauge part 4a of the gauge plate 4 located in the use position is engaged with the workpiece, and the workpiece is moved. At the same time, the clamper 7 is swung by the operation of the clamp cylinder 9, and the gauge part 4a and the clamper 7 are
The workpiece can be held between the two.

If the gauge plate switching device l is attached to the wrist (not shown) of the Cartesian coordinate robot 11 provided on the support frame 10 of the assembly station of the workpiece assembly line, for example as shown in FIG. The plate switching device 1 is moved according to the arrows x and y in the figure based on the operation of the robot 11.
, can be moved in three mutually orthogonal directions as shown by z,
The gauge plate 4 of the switching device 1 allows the workpiece to be positioned and held at any position within the space of the assembly station.

(Problem to be Solved by the Invention) However, in the conventional gauge plate switching device described above, since a plurality of gauge plates are lined up in the thickness direction, the size of the part where the work is positioned in the thickness direction is As the gauge plate becomes larger, a large space is required to place the part relative to the workpiece, and each gauge plate cannot be switched to a common use position without moving the entire switching device. There is a problem in that the layout of the device at the assembly station may be difficult.

The present invention provides a device that advantageously solves this problem.

(Means for Solving the Problems) A gauge plate switching device of the present invention includes a rotating plate divided into a plurality of ranges with respect to a rotation axis, each of which is arranged so as to fit within each of the partitioned ranges, a plurality of gauge plates, each having a gauge portion, mounted on the plate surface of the rotary plate so that the plate surfaces face each other; and rotating plate driving means for rotating the gauge plate by an angle so that the gauge plate is selectively placed in the use position.

Here, the plate surface refers to the surface of the plate material facing in the thickness direction.

(Function) According to this gauge plate switching device, by rotating the rotating plate and, by extension, the plurality of gauge plates attached thereto, by the operation of the rotating plate driving means, a desired gauge portion can be formed. The gauge plate can be placed in the position of use.

Moreover, according to this device, a plurality of gauge plates are each mounted on the plate surface of the rotary plate so that the plate surfaces of the gauge plates and the plate surfaces of the rotary plate face each other. The thickness direction dimension of the part to be positioned is mainly the thickness of the rotating plate,
-Since it is determined by the thickness of the equinox gauge plate, the space required to place the positioning part relative to the workpiece is small, and since each gauge plate is mounted on a common surface, the switching device Each gauge plate can be placed in a common use position without having to move the entire device, which in turn facilitates setting the layout of the device at a work location such as an assembly station.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a perspective view showing a first embodiment of the gauge plate switching device of the present invention, in which reference numeral 20 indicates the switching device, and 21 in the figure indicates a rotating plate, which is shaped like a disc in this example. show.

Here, the plate surface 21a of the rotary plate 21 is arranged radially around the rotary wheel line A as shown by the imaginary line in the figure, corresponding to the required number of gauge plates, that is, eight in this case, which are identical to each other. The board surface 21 is divided into fan-shaped areas with angles.
On top of a are attached and fixed gauge plates 23 (only one is shown in the figure), each having a plate-shaped gauge chip 22 as a gauge part having an end edge shaped to correspond to a different cross-sectional shape of the workpiece. The plate surface of the gauge plate 23 and the plate surface 21a are arranged so as to face each other, that is, in this example, to be in surface contact with each other, and each of the gauge plates 23 is arranged within each fan-shaped range at least on the plate surface 21a. It is fixed on the plate surface 21a so that it fits within the area. Note that the portion of each gauge chip 22 having a shape corresponding to the cross-sectional shape of the workpiece does not exert any weight in the thickness direction of the rotating plate 21 and the gauge plate 23 to which the gauge chip 22 is fixed. Therefore, the rotating plate 21 and the gauge plate 23 are arranged at a position where they can engage with the work without causing interference with the work.

Further, here, a hinge lever type clamper 24 is pivotally supported on the part of the gauge chip 22 that does not engage with the workpiece, and a head side end of a flat clamp cylinder 25 arranged along the gauge plate 23 is attached. Support,
The piston rod 25a of the cylinder 25 is moved by the clamper 2.
4, a clamp mechanism 26 is provided.

Here, the rotating plate 2 is connected so that the moving axis A of a normal servo motor 27 with a reduction gear as a rotating plate driving means coincides with the moving axis A, and the servo motor 27 is attached to a bracket 28. Here, the servo motor 27 is
A normal encoder is built in, and the output shaft and thus the rotating plate 21 can be rotated by an arbitrary angle based on the output signal of the encoder.

According to the gauge plate switching device 20, by rotating the rotary plate 21 and, by extension, the plurality of gauge plates 23 attached thereto by the operation of the reducer (=J servo motor 27), the desired gauge can be changed. Gauge plate 23 with chip 22
Since the clamp cylinder 25 can be placed at a predetermined use position, the part of the gauge tip 22 having a shape corresponding to the cross-sectional shape of the workpiece can be engaged with the workpiece (not shown) to position the workpiece. By activating and swinging the clamper 24, the workpiece can be held between the gauge chip 22 and the clamper 24.

Moreover, according to this device 20, the plurality of gauge plates 23 are placed on the plate surface 21a of the rotary plate 2I, respectively.
Since the plate surface 3 and the plate surface 21a of the rotary plate 21 are mounted so as to face each other, the parts for positioning the work, that is, the rotary plate 21, the gauge plate 23 having the gauge chip 22, and Since the dimension in the vi thickness direction of the clamp mechanism 26 is determined mainly by the thickness of the rotating plate 21 and the thickness of the equinox gauge plate 23, the space for arranging the above-mentioned positioning portion relative to the workpiece can be small. , Moreover, each gauge plate 23 is mounted on a common plate surface 21.
a, it is possible to arrange each gauge plate 23 at a common use position without moving the entire switching device 20, and from these points, it is easy to set the layout of the device 20 at an assembly station etc. It can be tightened.

FIG. 2 shows a gauge plate switching device 3 according to a second embodiment of the present invention.
0 and a gauge plate switching device 50 according to a third embodiment, in which the switching device 30 includes eight radially arranged rotation wheels B of a rotating plate 31, which are orthogonal to the plane of the paper in the figure. On the plate surface 31a divided into ranges, the gauge plates 34 each having two gauge chips 32 and 33 are separated depending on the type of workpiece (only two plates are shown in the figure), and each of the gauge plates 34 is divided into two gauge plates 34, each having two gauge chips 32 and 33, respectively, depending on the type of workpiece (only two plates are shown in the figure). The gauge plates 34 are fixed on the plate surface 31a so that the plate surfaces of the gauge plates 34 are in surface contact with the plate surface 31a, and At the same time, a flat clamp cylinder 35 is fixed, and two clamp levers 36 and 37 are pivotally supported on the plate surface of the gauge plate 34 by a common shaft, and the clamp levers 36 and 37 are linked respectively. Piston rod 3 of cylinder 35 through the plate
5a, a clamp mechanism 38 is provided, and the rotating plate 31 is connected to the output shaft (not shown) of a servo motor 39 with a speed reducer similar to the motor 27 described above.
The axis of the output shaft and the rotation axis B are aligned and connected, and the servo motor 39 is attached to a bracket 40. Here, a stopper 41 is provided on the rotary plate 31, and a protrusion 42 is provided on the outside of the servo motor 39, and the abutment of the stopper 41 and the protrusion 42 with each other allows
The origin position of the rotation of the rotation plate and thus each gauge plate 34 can be mechanically specified. Further, the gauge plate 34 is provided with a locate pin 43 that protrudes from the gauge chip 32 or 33 and fits into a locate hole of the workpiece, as required.

On the other hand, the switching device 50 here has its own end edge on the plate surface 51a of the rotating plate 51, which is divided into eight ranges radially with respect to the rotating axis C, which is perpendicular to the paper surface in the figure. Eight gauge plates 52, which are gauge portions 52a corresponding to the cross-sectional shape of the workpiece, are arranged according to the type of workpiece (also only two are shown in the figure) so that each of them falls within the above division range, The plate surface of those gauge plates 52 is the plate surface 51
The gauge plates 52 are fixed on the plate surface 51a so as to be in surface contact with the plate surface 51a, and the rotary plate 51 is driven by a servo motor 53 with a reducer similar to the motor 39 described above.
The servo motor 53 is connected to an output shaft (not shown) of the servo motor 53 so that the axis of the output shaft and the rotation axis C coincide with each other.
This is also attached to the bracket 40. Note that in this device 50 as well, while a stopper 54 is provided on the rotary plate 51,
By providing the protrusion 55 on the outside of the servo motor 53,
The origin position of the rotation of each gauge plate 52 is mechanically specified, and each gauge plate 52 is provided with a proximity sensor 56 that detects the presence of a workpiece.

According to the gauge plate switching devices 30 and 50, by arranging the required gauge plates 31 and 51 at respective use positions based on the operation of the servo motor 3953, a large workpiece 6 with a complicated cross-sectional shape can be moved as shown in the figure.゜ (for example, the rear panel of the car body) with their gauge chips 32.33
It is possible to position the clamp levers 36 and 37 at a predetermined position by cooperation of the gauge portion 52a and the clamp levers 36 and 37 in mutually opposite directions based on the operation of the clamp cylinder 35. can be expanded and fitted into the hole 60a of the workpiece 6o to hold the workpiece 60, and the locate pin 43 and the workpiece 6o can be held.
By fitting into the locating hole No. 0, the workpiece 60 can be positioned even in a direction perpendicular to the paper surface in the figure, and in addition, the presence of the workpiece 6o can be confirmed by the sensor 56.

Moreover, each of these switching devices 30.50 requires a small space for arranging the part for positioning with respect to the workpiece, as in the first embodiment described above, and furthermore, the entire switching device 30.50 can be moved. Since each gauge plate 34.52 can be placed in a common use position for each device without having to do so, the layout of the device 30.50 at an assembly station or the like can be facilitated.

In addition, 61 in the figure indicates a rectangular coordinate type robot having roughly the same configuration as the robot 11 shown in FIG. 6, and this robot 61
is attached to a frame 62 provided at an assembly station of a workpiece assembly line, and the bracket 40 and the switching devices 30 and 50 are fixed to the wrist portion 61a of the frame 62.

Therefore, here, both switching devices 30 and 50 can be integrally moved in a three-dimensional direction based on the operation of the robot 61, and the workpiece 60 can be positioned at a position suitable for the workpiece 60 within the space of the assembly station. can be retained.

FIG. 3 shows a gauge plate switching device 7 according to a fourth embodiment of the present invention.
0, and in this example, the plate surface 71 of the rotating plate 71 is divided into eight ranges radially with respect to the rotating axis.
On top a, there are eight gauge plates 72 whose edges are gauge portions 72a corresponding to the cross-sectional shape of the workpiece, depending on the type of workpiece (only two are shown in the figure). Each gauge plate 72 is arranged so that the plate surface of each gauge plate 72 is in surface contact with the plate surface 71a.
are fixed on the plate surface 71a, and together with this, clampers 73 are pivotally supported so that they fall within the ranges of each of the sections and one end can move forward and backward with respect to the gauge plate 72, and the other ends of the clampers 73 are fixed on the plate surface 71a. Further, the rotary plate 71 is connected to an output shaft (not shown) of a servo motor 75 with a reduction gear similar to the motor 27 described above, and the axis of the output shaft and the rotation axis are connected to each other. The servo motor 75 is then connected to the bracket 76. Here, a U-shaped frame 77 that straddles the rotating plate 71 is fixed to the bracket 76, and a clamp cylinder 78 and a ring-shaped guide 79 with a part cut out are attached to the frame 77.
The bracket 8° supporting the piston rod t"7 is arranged so that the direction of the extension force of the piston rod door 8a of the cylinder 78 matches the direction of the notch, and the piston rod t"7
Two protrusions 81 are provided at the tip of the guide 8a, each of which can fit into the notch of the guide 79 and which can hold the roller 74 between them.
a, fix the clamper drive fork 81 having 81a.

According to this device, the gauge plate 72 is placed in the use position (the position shown on the lower side in the figure) by rotating the rotating plate 71 based on the operation of the servo motor 75, so that the roller 74 is moved to the clamper driving fork 81. two protrusions 81a, 81
Since the clamper 73 can be engaged with the gauge plate 7 by swinging the clamper 73 based on the forward and backward movement of the piston door 8a of the clamp cylinder 78, the clamper 73 and the gauge plate 7 can be engaged with each other.
Further, after retracting the piston rod 78a to a position where the protrusion 81a on the end side fits into the notch of the guide 79, the rotating plate 71
By rotating the rollers 74, the rollers 74 can be drawn into the guide 79, so the gauge plate 7 can be placed in a position other than the use position.
2, the associated clamper 73 can be held in an unclamped state away from the gauge plate 72.

Here, the clamper 73 may be provided with a stopper (not shown) that specifies the swing limit position in the unclamped state as a position where the roller 74 contacts the inner circumferential surface of the guide 79.

Therefore, according to the device of this example, the - number of clamp cylinders 78 can be shared by all the clampers 73, so the clamp cylinders for each clamper and the piping and operation detection switches for them can be eliminated. The overall dimensions of the gauge plate switching device can be made compact, and the wiring, piping, control device, etc. for controlling the operation of the device can be simplified, and moreover, The effects of the device of the embodiment can also be brought about.

FIG. 4 shows the main part of a fifth embodiment of the present invention. In this example, in a device similar to the fourth embodiment described above, the ring-shaped guide 79 is eliminated and a clamper 79 is used instead.
3 is always urged in the direction of unclamping by the spring 82, and only when the gauge plate 72 is placed in the use position as shown in the figure, the drive piece 83 provided at the tip of the cylinder rod 78a of the clamp cylinder 78 is activated. The clamper 73 can be brought into contact with the roller 74, and in this state, the clamper 73 can be swung based on the operation of the clamp cylinder 78a, and the work can be clamped between the clamper 73 and the gauge plate 72.

According to this device, the same effects as those of the fourth embodiment can be achieved with a simpler configuration.

According to the first to fifth embodiments described above, the rotating plates are rotated by the servo motor 27, 39, 53, 75, which is a single driving means, and a large number of gauge plates are selectively used. Since the gauge plate is placed at the position, there is no need to provide a driving means such as a gauge plate switching cylinder for each gauge plate as in conventional devices, and therefore the driving means for selectively placing the gauge plate at the use position can be simplified. In addition, the wiring, piping, control device, etc. for the control can be simplified.

Although the above description has been made based on the illustrated example, the present invention is not limited to the above-mentioned example. It is not necessary to bring them into surface contact, and even if a spacer or the like is interposed between them as required, the dimension in the plate thickness direction can be maintained sufficiently small.

Further, the shape of the rotating plate is not limited to a disk shape, but may be a polygonal shape depending on the number of gauge plates to be provided, and the rotating plate driving means may be a servo motor as long as it can rotate the rotating plate by a predetermined angle. It may be something other than that.

Furthermore, the number of divisions of the rotary plate can be changed as required, and it is not necessary to attach gauge plates to all of these divisions.

(Effects of the Invention) Thus, according to the gauge plate switching device of the present invention, only a small space is required for arranging the part for positioning the work relative to the work, and moreover, without moving the entire switching device, Since each gauge plate can be arranged at a common use position, it is possible to easily set the layout of the apparatus at a work place such as an assembly station.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of a gauge plate switching device of the present invention, FIG. 2 is a front view showing a second and third embodiment of the invention, and FIG. FIG. 4 is a perspective view showing essential parts of a fifth embodiment of the present invention, FIG. 5 is a perspective view showing a conventional gauge plate switching device, and FIG. 6 is a perspective view of the conventional gauge plate switching device. FIG. 3 is a perspective view showing usage conditions. 20, 30.50.70... Gauge plate switching device 21,
31.5L 71...Rotating plate 21a, 31a, 51a, 71a...Plate surface 22
, 32.33... Gauge chip 23, 34.52.72... Gauge plate 52a, 72
a... Gauge part 27, 39.53.75... Servo motor A to D with reducer... Rotation axis line

Claims (1)

[Claims] 1. A rotating plate (2
1, 31, 51, 71), each of which is arranged so as to fit within the range of each of the sections, and is mounted on the plate surface of the rotary plate so that the plate surfaces face each other. (22, 32, 33, 52a, 7
2a) a plurality of gauge plates (23, 34, 52,
72), a rotating plate driving means (27, 39, 53, 75) A gauge plate switching device comprising: