JPS6227291Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial Application Field) The present invention was developed during the manufacturing process of a door subassembly with an automobile frame after completion (after brazing).
This invention relates to a device for correcting the installation position of a door frame. (Prior Art) Conventionally, in manufacturing a door subassembly with a frame for an automobile, as shown in FIG.
After fixing with spot welding to the door frame 13
The part between the door body 3 and the upper part of the door body 3 is brazed from the viewpoint of design, sealability, strength, and rust prevention. (Problems to be Solved by the Invention) When the frame-equipped door subassembly 2 described above is installed on the main body of an automobile, the installation accuracy of the door frame 13 becomes a major problem in terms of appearance and rain leakage. This can be attributed to three factors: variation in the amount of change due to heating and cooling during brazing of the door frame, variation in roll-press molded products such as door frames and door inners, and variation in surface accuracy of the door hinge on the main body side mentioned above. . In particular, the above factors include variations due to differences in heating temperature and heating time during brazing, and variations due to differences in the amount of shrinkage of the brazed part depending on the amount of solder welding, and it is extremely difficult to control these factors. It has become a thing. The condition of the installation accuracy of the door frame 13 is more remarkable in the upper parts B and C than in the lower parts A and D of the door frame 13. For reference, each part A, C of the door frame 13 is
An example of changes in Cp values before and after brazing in B, C, and D is shown in the table below.

[Table] Tolerance width
Cp＝

Claims (1)

[Scope of utility model registration request] Close to the door frame set in place,
It has a straightening device main body that is removably attached, and a pair of straightening heads that are arranged to sandwich the door frame at an appropriate distance in the front and back directions, and the door frame is attached to the straightening device main body in the front and back directions. a movably provided correction section; a drive source for moving the pair of correction heads in the front and back directions of the door frame; a measurement original position detection sensor for detecting a measurement original position with respect to the correction apparatus main body; a measurement original position measurement sensor attached to the correction part so as to face one surface of the door frame; means for detecting a measurement original position by a sensor and controlling the drive source so as to stop the correction unit at a predetermined position based on the detection signal; and means for measuring a distance from the measurement original position to one side of the door frame. , calculates the installation accuracy of the door frame with respect to the normal position based on the measurement signal, and when the calculated installation accuracy exceeds the tolerance, calculates the amount of bending based on the amount of correction, and adjusts the correction part by this amount of bending. and a controller having means for controlling the drive source to move the door frame.