JP2015027704A - Press-in method comprising misalignment correction mechanism in press-fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure accuracy of assembly after press-fitting by press-fitting a workpiece without stress on the workpiece when press-fitting the workpiece.SOLUTION: Such a mechanism as to enable movement of a workpiece without resistance and facilitate alignment in correction of misalignment is provided. The upside and downside workpieces are synchronously operated to prevent the misalignment from occurring again after press-fitting is started after the alignment, and a load of final press-fitting is structurally borne by a plane. This enables the reliable press-fitting.

Description

  The present invention relates to a press-fitting device that eliminates the tilt of a work during press-fitting, reduces stress on the work, and ensures high accuracy of press-fitting assembly.

  In the conventional press-fitting method, the lower work is installed on a flat surface, and when moving the misalignment with the upper work, smooth movement is difficult due to the effect of frictional resistance, which affects the assembly accuracy after press-fitting.

  Even when the machining reference is provided and the upper workpiece and the lower workpiece are aligned, it is impossible to eliminate machining errors, and there is a concern about stress on the workpiece during press-fitting.

  At the time of press-fitting, the upper work fixed and held is lowered, and the lower work is moved accordingly, and misalignment correction is performed. However, the lower work cannot be smoothly moved due to frictional resistance and tilts.

  Even when a processing standard is provided, complete alignment is impossible and stress is applied to the workpiece during press-fitting.

  In the present invention, the lower work is arranged on the ball roller in the horizontal direction, and when the misalignment with the fixed upper work is corrected, it moves in the horizontal direction without being affected by the frictional resistance. To do.

  By providing a vertical movement mechanism for the ball roller and synchronizing the downward movement of the press-fitting head and the downward movement of the ball roller, the occurrence of misalignment after correction of misalignment is prevented, and the maximum load during press-fitting is received at the base. Complete press-fitting is possible.

  When press-fitting with the apparatus of the present invention, the workpiece is not tilted during press-fitting, and the workpiece can be press-fitted without stress, and assembly accuracy after press-fitting can be ensured.

These are explanatory drawings which showed the structure of the press injection apparatus in this case.

Hereinafter, a press-fitting method according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the upper work 4 is fixedly held on the press-fitting head 3.

  The lower work 5 is set on the ball roller 7. At this time, the freely movable ball protrudes from the upper surface of the base 6, and the lower workpiece 5 is in a state in which it can freely move in the horizontal direction.

  The upper work is lowered by the press-fitting motor 2, and the lower work 5 moves horizontally on the upper surface of the ball roller 7 to correct misalignment.

  When the upper workpiece 4 and the lower workpiece 5 have entered, the press-fitting motor 2 and the ball roller lowering motor 8 are operated synchronously so that misalignment does not occur again.

  The maximum load for press-fitting is received by the base 6 when the ball roller 7 is lowered from the upper surface of the base 6.

1 Press-fitting device 2 Press-fitting motor 3 Press-fitting head 4 Upper work 5 Lower work 6 Base 7 Ball roller 8 Ball roller vertical motor

Claims (2)

  A press-fitting system that allows the lower work to move freely in the horizontal direction, eliminates misalignment with the upper work, eliminates the tilt of the work during press-fitting, prevents deterioration of assembly accuracy due to press-fitting, and reduces stress on the work. .   A press-fitting method in which a vertical mechanism is provided on the ball roller, and the press-fitting motor and the vertical motor are operated synchronously to prevent deterioration in assembly accuracy due to press-fitting and further reduce stress on the workpiece.

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