JPS6015276A - Discrimination of specification of parts for automobile assembling process - Google Patents

Abstract

PURPOSE:To reduce the number of correcting processes in the ending process by increasing the reliability of checking a specification by a method in which the presence or absence of the vehicular inner reinforcement parts for different vehicular kinds is detected by a non-contact sensor, and assembling parts for every vehicular kind are verified and assembled. CONSTITUTION:By magnetic type non-contact sensors 16 and 17, the numbers of constituent panels of corresponding part are detected on a principle that magnetic fluxes combined between positive poles 16a and 17a and negative poles 16b and 17b are stepwise varied due to the presence or absence or reinforcement parts 12 and 13 to be provided in the inside of different bodies for every vehicular kind. By combining sensors 3A and 4A to detect the appearance and shape of 3-door, 5-door vehicle, etc., as in the conventional cases, checking and assembling of parts based on specification can be exactly attained by discriminating the vehicular kinds.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for determining specifications of assembled parts in an automobile assembly process.

In the automobile assembly process, common parts and non-common parts;
A production method is adopted in which multiple cars with different specifications are produced on the same (common) production line by appropriately selecting and combining I3+ parts. Specifications are checked.

Figure 1 shows an outline of how to determine the specifications of the body side at the front stage of the body main line. 1 is a self-propelled hanger, B is a body side suspended from hanger 1, and installed memory unit. The storage device of the main control cabinet (not shown) stores information such as the specifications and model of the automatic robot in accordance with the production plan in advance, and also stores the above information in accordance with the bodies moving on the line. The parts are sent sequentially, and signals are output to each department to properly select and process parts based on the memory at that time. As a result, each memory unit 2 has its body 1
This means that information regarding the specifications of side B is stored.

For example, two sets of photoelectric switches 3A are installed in the center pillar, which is a characteristic part of the difference in specifications between 3-door and 5-door cars.
Apply 4A light beams 01 and 02 (for a 3-door car, one photoelectric switch 4A is turned on, and for a 5-door car, the other photoelectric switch 3A is turned on) to examine its appearance and shape. Detect the specifications of the portrait body side B from
The detection outputs of the photoelectric switches 3A and 4A are compared and verified with the information stored in the memory unit 2 to determine whether the stored information is correct or not.

However, as an alternative to the above method, there is a barcode production control method. In this method, for example, the first side of the closed body is stored in advance according to specifications, while the main assembled part, that is, the floor main, is stored in advance.
．． A barcode label stamped with vehicle model information including the specifications of the vehicle is attached, and by reading this barcode, the body side affixed to the specifications is called up and assembled.

However, in the specification management method mentioned above, a suffix assembly is used to make the body side itself stand out by combining the fenders, pillars, etc.

In the assembly process, the specifications of each part can be checked on-site, but in subsequent processes, the information stored in the main control unit may be shifted in synchronization with the movement of the body side parts, which are the assembled parts. As mentioned above, the light T (switch) only detects the external shape of the body side before assembly, so there are the following problems.

In other words, if parts are interrupted or removed due to poor welding or dents during assembly, the craftsman will feed back to the main control lid each time to correct the memory by 4m, but for some reason, if a part is interrupted or removed due to poor welding or dents, Even if the true specifications of the body side and the specifications inside the storage device or memory unit are completely different, they will still be treated as the body side with the specifications inside the storage device or memory unit, especially the reinforcement installed inside the body side. In cases where specifications differ depending on the presence or absence of parts, the specifications cannot be determined at all from the external shape.
If the presence or absence of reinforcing parts is not known until the final process, there is a risk that a car with different specifications will be produced, and the number of man-hours for corrections in the final process will increase significantly. I don't like vomiting.

This invention was developed in consideration of the above points, and aims to eliminate the occurrence of specification differences and reduce the number of man-hours for corrections in end processes by ensuring specification checking and improving its reliability. shall be.

For this purpose, in the present invention, the presence or absence of internal reinforcing parts in the vehicle body is detected in advance using a non-contact sensor, the specifications of the assembled parts are determined based on the presence or absence of the internal reinforcing parts, and this determination result and the assembled The method is characterized in that the parts to be assembled are assembled to the parts to be assembled after checking the specifications of the parts.

Hereinafter, more specific embodiments of the present invention will be described in detail using the drawings, taking the aforementioned body side as an example. However, the same parts as those in the conventional example described above are given the same reference numerals.

First, we will explain the overall flow from the sub-assembly process of the body-assembled to the main line of the body based on Figure 2.
To clarify, 5A and 5B are the assembly parts of the left and right body side B, from the subassembly that is assembled respectively, 6A * 6B is the storage device, 7 is the body main line, and the subassembly body is assembled. Side B is transferred to hanger 1 in transfer process 8.
, and are temporarily stored in the storage devices ff6A, 6'R. Then, when the storage officer selects the body side B based on the above-mentioned memory information, the entire hanger is taken out again and it is determined and confirmed whether the selected body side B is genuine or not. After the determination process 9, the body main line 7 is set in the process 1.
Input to 0. Thereafter, in a subsequent assembly step 11, the left and right body sides B are assembled to a floor main (not shown), which is an assembled part.

Here, as for the body side B, in addition to the two specifications of the 3-door type and the 5-door type mentioned above, as shown in FIG. , 13 , 14 ,
A plurality of types of materials with different specifications depending on the presence or absence of 15 are mixed and flown.

Therefore, in the determination step 9, as shown in FIG. , 1.7a and negative side 16b, 17”I
), and the specifications of each body side are determined from the combination of the outputs of the photoelectric switches 3A and 4A and the magnetic and magnetic type non-contact sensors 16 and 17. .

In other words, as mentioned above, when the light beams O+ and Oze of the photoelectric switches 3A and 4A are applied to a part of the center pillar, which is a characteristic part of the difference in specifications between a 3-door car and a 5-door car, one Since the light beam 02 is blocked by the body side B (the other light beam O7 is not blocked because it passes through the front door opening D1), it is turned on, and conversely, in the case of a 5-door car, part of the center pillar by the other light beam O! is blocked (the other light beam O! is not blocked because it passes through the rear door opening D2), so O
From the outputs of the photoelectric switches 3A and 4A, it is determined whether the car is a 3-door TJ or a 5-door car.

On the other hand, the magnetic type non-contact sensors 16 and 17 are connected to a reinforcing component 12 provided inside the body side, as shown in FIGS. 4A and 5B and FIGS.
and 13, the positive electrode 1 (i a ,
17a ()Ill and negative electrode 16b.

17 b (Since the magnetic flux connected between H+1 changes stepwise, the number of panels in the corresponding area can be known from the magnetic flux change, and the presence or absence of the reinforcing parts 12 and] 3 can be detected. Then, by combining the above-mentioned differences in external shape and the presence or absence of reinforcing parts 12 and ]3, the specifications of body side B are checked in-kind. When the detection outputs of the switches 3A and 4A and the detection outputs of the non-contact sensors 1 (i, 17) are combined as discrimination conditions, the specifications of the body side B, for example, A, -F, of a total of 6 draws, are discriminated.

Incidentally, in the above-mentioned embodiment, the description has been made regarding the specification determination of the body side, but it goes without saying that the present invention can be similarly applied to parts other than the body side.

As is clear from the above description, according to the present invention, specifications can be checked on the actual assembly parts for assembled parts whose specifications differ depending on the presence or absence of internal reinforcing parts that cannot be determined from the external shape. It is possible to prevent specification differences from occurring and eliminate the man-hours required for corrections in end processes that were conventionally required.

Table 1 Furthermore, the method of the present invention can also perform so-called missing item inspections, so it can fully respond to diversification of specifications. That is, for example, parts that were conventionally attached to all models because they could not be detected can now be attached only to those with the necessary specifications, which has the effect of reducing costs.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram for explaining the conventional method for determining specifications of body side, Fig. 2 is a schematic diagram of a line to which the specification discriminating method according to the present invention is applied, and Fig. 3 is a diagram for explaining the specification discriminating method according to the present invention. An explanatory diagram showing an example of the method, FIG. 4 is an illustration of IV- in FIG.
The sectional view taken along the line IV and FIG. 5 are also the sectional views taken along the line ■-■ in FIG. B...Body side (,!! Parts with lI), 16,
17・-〇 , non-contact sensor, 12 , 13 , 14
, 15... Reinforcement parts. Figure 1, = 1 Figure (A) Figure 5 (A) 4th Lffl (B) Figure 5 (B) 16b8 convex //,

Claims (1)

[Claims] (1) In the automobile assembly process where cars with different specifications are assembled on a common line, the presence or absence of internal reinforcing parts in the car body is detected in advance using a non-contact sensor, and the specifications of the parts to be assembled are based on the presence or absence of the internal reinforcing parts. 1. A method for determining the specification of an assembled part in an automobile assembly process, comprising: determining the determination result and comparing the specifications of the assembled part, and then attaching the assembled part to the assembled part.