JP2512692Y2 - Carrier surface plate type size inspection device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention checks the dimensions of a carrier for loading and carrying the objects to be conveyed, and if the carrier is used for a certain period of time, the carrier may be displaced beyond a permissible tolerance. It relates to a device for checking whether or not there is.

[0002]

2. Description of the Related Art For example, a carrier used in an automobile assembly line travels along a rail and carries an automobile body or the like. Therefore, each component of the carrier must not be displaced from the predetermined position not only at the beginning of use but also when used for a certain period of time.

Therefore, at the time of assembling the carrier, an assembling worker installs the respective parts of the carrier on the basis of the position of the gauge of the position deviation inspection device so that the positions of the respective parts of the carrier are within a predetermined tolerance. Are doing. Also, the inspector checks whether or not each component of the carrier has been displaced by a certain period of time beyond the range of the mounting position tolerance based on the position of the gauge. The site is inspected regularly or when necessary. There are cases where each component of the carrier itself becomes a check place, and a member specially provided for checking other than the carrier component becomes a check place.

The misalignment inspection device includes a track (for example, a monorail) provided on a frame for receiving a carrier,
It includes a locking mechanism that locks the received carrier in place and a gauge for checking the dimensions of the check points on the carrier. This position deviation inspection device can judge the assembly accuracy of the entire carrier and the position deviation of each part of the carrier by inspecting the size of the check position of the locked carrier with a gauge as a reference. You can do it. Therefore, such a positional deviation inspection device is used as an assembly jig for assembling the carrier or an inspection device for checking the positional deviation of the carrier parts when the carrier is used for a certain period.

For this reason, the gauge of the displacement inspection apparatus must be mounted at an accurate position during assembly.
By the way, as shown in FIG. 6, the cage 13 has a plumb bob 1 which is suspended from a certain reference point 11 in the displacement inspection apparatus.
It is provided with reference to the plumb bob 12 of the reference point 11 while measuring the distance between the tip of the No. 2 and the tip of the plumb bob 14 suspended from the gauge 13 on the floor surface or in the space with the scale 15. Further, after the assembly, the assembly accuracy check for checking the presence or absence of the distortion of the frame of the displacement inspection apparatus installed in the automobile assembly line is performed by the same method with the plumb bob hung from the reference point 11 as a reference. Has been done. A trajectory may be used as the reference point. In this case, the displacement of the gauge mounting position and the frame assembly accuracy are checked based on the dimensions measured from the track in the front-rear, left-right and up-down directions (three-dimensional direction).

[0006]

However, in the position shift inspection apparatus 10 as described above, the relative position is measured relative to the plumb bob which is difficult to determine the position suspended from the reference point 11 as a reference. Positional dimension measurement,
The assembly worker who installs the gauge has a problem that it is difficult to accurately install the gauge itself because the assembly worker must take a posture that is difficult to measure and measure the distance between the swings. Further, when the trajectory is used as the reference point, it is difficult to measure the distance in the three-dimensional direction, and it takes time for the measurement.

[0007]

SUMMARY OF THE INVENTION The present invention provides a frame capable of receiving a carrier, a rail provided on the frame for moving the carrier in and out, and a lock for locking the carrier at a predetermined position on the rail. An inspection device including a mechanism, a gauge for checking the dimensions of the carrier locked by the lock mechanism, and a surface plate formed by intersecting a plurality of reference lines serving as position references of the gauge with each other. By the above, the above-mentioned problems are solved.

[0008]

[Operation] When the gauge is provided, the front and rear and left and right positions of the gauge are measured by the assembly worker in the front and rear and left and right directions between the tip of the plumb bob hung from the gauge and the nearest reference line on the fixed surface plate. It is set by The vertical position of the gauge is set by measuring in the vertical vertical direction with reference to the upper surface of the surface plate. The upper surface of the surface plate serves as an absolute reference surface. The inspector also inspects the displacement of the gauge after using the displacement inspection device for a certain period of time, with reference to the nearest reference line and the upper surface of the surface plate. Also, with a rail,
The setting of the mounting position of the lock mechanism and the inspection of the positional deviation are similarly performed by the assembly worker and the inspector. In the same way, check the carrier and assemble each part.
It is performed with reference to the nearest reference line and the upper surface of the surface plate. Further, the displacement of the check position of the carrier used for a long period of time is also inspected with reference to the gauge, or with reference to the nearest reference line and the upper surface of the surface plate. or,
When the misalignment inspection device is moved to another place different from that when it is assembled and installed, the misalignment inspection device is installed so that the upper surface of the surface plate, which is the absolute reference plane, is horizontal. The accuracy of assembling the frame of the displacement inspection device installed at the moved place is also checked with reference to the nearest reference line and the upper surface of the surface plate to inspect the frame distortion due to the movement.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The misalignment inspecting device 20 determines whether the parts of the carrier are installed in the positions within the tolerance when the carrier is assembled, or the positions of the parts of the carrier are out of the tolerance by the use of the carrier for a certain period of time. An assembly worker or an inspector checks whether or not there is a deviation based on the gauges on the inspection device 20 to determine the assembly accuracy of the entire carrier and the position of the parts or the conveyed objects for loading the conveyed objects. It is possible to detect the positional deviation of each component of the carrier such as the component for determining. The carrier C is used, for example, in an automobile assembly line, and travels along a monorail to convey an automobile body. Since the main part of the present invention is a surface plate 24 described later, parts other than the surface plate 24 will be briefly described.

The displacement inspection apparatus 20 (see FIG. 1) has a frame 23 composed of a plurality of columns 21 and beams 22. The frame 23 has a shape capable of receiving the carrier C. A surface plate 24 is provided at the bottom of the frame 23. The surface plate 24 (see FIG. 4) is installed so that the upper surface 241 is horizontal after the frame 23 is assembled. By installing the surface plate 24 in the frame 23, an absolute reference plane (upper surface 24
1) and the absolute reference point 30 described later are provided. On the upper surface 241 of the surface plate 24, X and Y axis reference lines 31 and 32 which pass through the absolute reference point 30 and are orthogonal to each other, and these X and
A plurality of X-axis auxiliary reference lines 33 parallel to the Y-axis reference lines 31 and 32 and a Y-axis auxiliary reference line 36 are formed like a grid. Each line 31, 32, 33, 36 is marked by a laser beam.

On the head of the frame 23 (see FIG. 3), a monorail (rail) having a section I type for receiving the carrier C is provided.
R is provided. A lock gauge 40 is tiltably provided on a side surface of the monorail R. U which engages with the roller 41 on the carrier C is attached to the tip of the lock gauge 40.
A letter-shaped notch 42 is formed. This lock gauge 4
The 0 and the roller 41 constitute a lock mechanism 25 that locks the carrier C at a predetermined position on the monorail R.

The bracket 4 is provided on the side surface of the frame 23.
Shaft-shaped gauges 45, 45 supported by 3, 43 (see FIG. 3) (see FIG. 2, one gauge 45 is not shown)
Is included. The gauge 45 is detachably insertable into the hole (not shown) of the bracket 43 from above (from the upper end of FIG. 2). The gauge 45 is adapted to be inserted into a hole (check point) 44 formed in the hanger H. Therefore, the gauge 45 needs to be removed from the bracket 43 because the hanger H contacts the carrier C when the carrier C moves in and out of the positional deviation inspection device 20.

The outer circumference of the gauge 45 serves as a measurement reference plane 451. Therefore, for the gauges 45, 45, the hole 44
By measuring the degree of deviation of the hanger H from the direction intersecting the monorail R (horizontal direction in FIG. 2) and the longitudinal direction of the monorail R (horizontal direction in FIG. 3), that is, the horizontal displacement of the hanger H. Can be detected. Further, the gauge 45 also has a role of preventing the hanger H from swinging while being inserted into the hole 44 and facilitating measurement of other check points.

On the surface plate 24 (see FIG. 1), six tilting rods 51, 52, 53, 54, 55, 56 are erected so as to be tiltable. Each tilting rod 51, 52, 53, 54, 5
5, 56 (see FIG. 4) has a hook-shaped first for checking the position of the parts provided on the hanger H,
Second gauges 61 and 62, ring-shaped third and fourth gauges 6
3, 64, and fifth and sixth gauges 65, 66 each having a protruding piece shape are provided.

The first and second gauges 61 and 62 are provided on the hangers H and are bent in an L shape so as to support the conveyed objects from below.
2 (see FIG. 2) is a flat measurement reference surface 611, 612, 621, 62 whose front end surface and side surface (both not shown) face each other.
2 (see FIG. 4) are formed respectively. The measurement reference planes 611, 612, 621, 622 are used for transporting the load carrying pieces 71,
This is a surface that serves as a reference when measuring the positional deviation of 72 in the front-rear and left-right directions. Further, on the upper surfaces of the first and second gauges 61 and 62, a reference surface 61 that serves as a reference when measuring the position (dimension) in the height direction of the top surfaces of the tips of the conveyed object loading pieces 71 and 72.
3, 623 are formed respectively.

Therefore, the measurement reference planes 611, 612, 62
1, 622, 613, and 623 are used as reference points to measure the positions of the front end surface, side surface, and upper surface of the conveyed object stacking pieces 71, 72, thereby determining the front, rear, left, right, up, and down directions (three-dimensional) of the conveyed object stack pieces 71, 72. It is possible to detect the dimensional accuracy of (direction). The measurement reference planes 613 and 623 for measuring the vertical displacement are the upper surfaces of the first and second gauges 61 and 62. The surfaces of members (not shown) provided separately may be used as a measurement reference surface for measuring the positional deviation in the vertical direction. In addition, a measurement reference line or a point may be provided on the above-mentioned measurement reference surface to serve as a reference for dimension check.

The third and fourth gauges 63 and 64 are provided with hole-shaped measurement reference surfaces 631 and 641 (see FIG. 4) through which the positioning shafts 73 and 74 (see FIG. 2) on the hanger H come in and out. There is. The positioning shafts 73 and 74 have a function of entering the recess formed in the conveyed product and preventing the positioning or displacement of the conveyed product. This measurement reference surface 631, 641
Is a surface serving as a reference when measuring the dimensional accuracy of the positions of the positioning shafts 73 and 74. Therefore, the measurement reference surface 631,
By measuring how much the positioning shafts 73 and 74 are offset with respect to the 641,
The dimensional accuracy of 4 can be detected.

The fifth and sixth gauges 65 and 66 have flat measurement reference surfaces 651 which are opposed to the front end surfaces of the load carrying pieces (check points) 75 and 76 (see FIG. 2) on the hanger H.
661 (see FIG. 4) is formed. Transported goods loading piece 7
Reference numerals 5 and 76 are bent in an L-shape to support the conveyed object from below. The measurement reference surfaces 651 and 661 are also reference surfaces when measuring the dimensional accuracy of the conveyed article stacking pieces 55 and 56. Therefore, the dimensional accuracy of the transported article loading pieces 55, 56 can be detected by measuring the positions of the transported article loading pieces 55, 56 with reference to the measurement reference surfaces 651, 661.

These gauges 61, 62, 63, 64,
65, 66, the monorail R, and the lock mechanism, the X and Y axis reference lines 31, which are inscribed on the upper surface 241 of the surface plate 24, which is an immovable absolute reference surface, when the position shift inspection device 20 is assembled.
32 or X, Y axis auxiliary reference lines 33, 36 and the upper surface 24
It is attached at a predetermined position with reference to 1. For example,
As shown in FIG. 5, the mounting of the first gauge 61 is performed by swinging from the measurement reference surfaces 611 and 612 of the first gauge 61.
1, 82 are hung on the upper surface 241 of the surface plate 24, and the distances in the front-rear, left-right directions are measured by the nearest X-axis auxiliary reference line 33 and Y-axis auxiliary reference line 36, and further, the surface plate 24 which is an absolute reference surface.
The scale 83 is vertically set on the upper surface 241 of the measurement reference plane 6
This is done by measuring the vertical distance of 13.

Other gauges 62, 63, 64, 65, 6
6, monorail R, lock mechanism 25 also X, Y axis reference line 3
1, 32 or nearest X, Y axis auxiliary reference lines 33, 36
And the upper surface 241 of the surface plate 24 as a reference, and it is attached at a predetermined position.

When the inspection device 20 is installed after the gauge is attached, a level, for example, is placed on the surface plate and the installation work is performed so as to be horizontal. In addition, the positional deviation inspection between the gauges 61, 62, 63, 64, 65, 66 and the monorail R when used for a certain period is similarly performed in the same manner as the X, Y axis reference lines 31, 32 or the nearest X, Y axes. Auxiliary reference line 33,
Based on 36 and the upper surface 241 of the surface plate 24, the inspector uses a plumb bob.

Next, the operation will be described. Initially, each tilting rod 5
1, 52, 53, 54, 55 and 56 are inclined to the standby state so that the carrier C can be received. When the carrier C is fed into the inspection device 20, the notch 42 of the lock mechanism 25 engages with the roller 41 on the carrier C and the carrier C is fixed. After that, each tilting rod 51, 52,
53, 54, 55 and 56 are set to vertical positions. As a result, the first and second gauges 61 and 62 oppose the conveyed product stacking pieces 71 and 72. 3rd and 4th gauges 63 and 64
Receives the descending positioning shafts 73, 74. Fifth,
The sixth gauges 65 and 66 face the conveyed product stacking pieces 75 and 76. The inspector inserts the gauge 45 into the hole 44 of the hanger H. If the gauge 45 does not fit into the hole 44, the position of the hanger H is displaced horizontally.

After that, the inspector examines the facing state, and the hole 44, the transported object loading pieces 71, 72, the positioning shafts 73, 7
4. The dimensional accuracy of the carrier C can be detected depending on how much the transported object stacking pieces 75 and 76 are displaced. The X and Y axis reference lines on the surface plate or the nearest X,
Using the Y-axis auxiliary reference line and the upper surface of the surface plate as a reference,
It is also possible to inspect the positional deviation of each part of the carrier C.

[0024]

According to the inspection device of the present invention, since the horizontal and immovable surface plate on which the reference line serving as the position reference of the gauge is formed is used as the reference for the rail, the lock mechanism, and all the gauges, etc. It is easy to check the assembly dimensions of the inspection device itself, and it is possible to improve the assembly accuracy.
It is also possible to shorten the assembly work time. Further, when installing the inspection device, for example, if a level is placed on the surface plate and the level is raised, then the installation is completed. Furthermore, when mounting the gauge or measuring the position of the gauge after it has been used for a certain period, the dimensions can be measured from the nearest reference line, so that the assembly workers and inspectors do not have to take a difficult posture to measure, The accuracy of measuring the position of the gauge can be improved. Moreover, since the position of the gauge can be measured from the nearest reference line, it is not necessary to use a special jig or a special measuring method, and the measurement can be easily and promptly performed at any time. Furthermore, since a plurality of reference lines are drawn, the distance to the nearest reference line becomes short, and it is possible to reduce dimensional reading errors and prevent misreading.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an inspection device.

FIG. 2 is a front view of the inspection device.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a plan view of a surface plate.

FIG. 5 is an explanatory diagram of hook positioning.

FIG. 6 is a diagram for explaining positioning of a gauge in a conventional inspection device.

[Explanation of symbols]

C Carrier R Monorail (rail) 20 Inspection device 23 Frame 24 Surface plate 25 Lock mechanism 31 X-axis reference line (reference line) 32 Y-axis reference line (reference line) 33 X-axis auxiliary reference line (reference line) 36 Y-axis auxiliary Reference line (reference line) 44 hole 45, 61, 62, 63, 64, 65, 66 Gauge 71, 72, 75, 76 Conveying object loading piece 73, 74 Positioning shaft 451, 611, 612, 621, 622, 631, 6
41,651,661 Measurement reference plane

Claims (1)

(57) [Scope of utility model registration request] 1. A frame capable of receiving a carrier, a rail provided on the frame for moving the carrier in and out, a lock mechanism for locking the carrier at a predetermined position on the rail, and a lock mechanism for locking the carrier. A platen type of a carrier, comprising a gauge for checking the dimension of the carrier in a fixed state and a platen formed by intersecting a plurality of reference lines serving as position references of the gauge. Dimensional inspection device.