JP2002143412A - Chucking device for hammer working machine for shooting pachinko ball - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rightly set/fix a hammer on a main body of chuck and to work the hammer without dispersion for each of workers in a hammer working machine for shooting pachinko ball. SOLUTION: In the chucking device for hammer working machine for shooting pachinko ball, in a cutting machine for the press-in portion of a hammer top coil spring for shooting pachinko ball, a hammer set jig stand is provided on the main body portion of chuck, this hammer set jig stand is equipped with a hole guiding member for guiding a rotary hammer axis hole, the main body of chuck is provided with a movable pressing member for forward pressing the body portion of the hammer, and a stopper for fixing the longitudinal position of the body portion of hammer forward pressed by the pressing member is located on the body portion of hammer and rightly fixed in the direction of hammer plate thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chucking device for a pachinko ball firing mallet for properly chucking a distance dimension of a tip end of a coil spring from a hammer rotation shaft hole and a relative angle of a press-fit portion.

[0002]

2. Description of the Related Art Conventionally, with respect to stable flying of a pachinko ball, the distance between the tip of a coil spring press-fitted into a hammer and a hammer rotation shaft hole and the relative angle with the hammer body are greatly affected. For this reason, the distance dimension and the relative angle between the hammer body and the press-fit portion are important factors in the cutting accuracy. In a conventional cutting machine, as shown in FIGS. 3 and 4, a hammer setting jig base 10 is provided on a chuck body portion, and a hole guide having a hammer rotating shaft hole 11 as a guide. A member 12 is provided, an abutting jig 13 is provided behind the hammering processing section, and a hammer 14 is set on the guide jig base 10.
The chuck 14 was chucked in the thickness direction while pressing the mallet 14 by hand.

[0003]

However, with this method,
It was very dangerous to perform chucking while pressing it by hand. In addition, since the dimensional accuracy is determined by the pressing force, there is a large variation among operators, and there is a problem that the operator is painful to reduce the variation and to push strongly.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and in a cutting machine for press-fitting a coil spring at the tip of a mallet for firing a pachinko ball, a hammer setting process is performed on a chuck body. A tool base is provided, the hammer set jig base is provided with a hole guide member for guiding the hammer rotation shaft hole, a movable pressing member for pressing the hammer body part forward on the chuck body, and the hammer body part is provided. A stopper is provided for fixing the position of the mallet body pushed forward by the pressing member in the front-rear direction, and is fixed correctly in the thickness direction of the mallet.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 5 is a front view before hammering. FIG. 6 is a front view after hammering. FIG.
Is a front partial view of a processed hammer tip. FIG. 8 is a front view of a hammer tip press-fit spring. FIG. 9 is a front view in which a spring has been press-fitted after hammering.

FIGS. 1 and 2 show an embodiment of the present invention. N
A hole guide member 2 that guides the hammer rotation shaft hole 1 and a hammer set jig base 4 provided with a stopper member 3 of the hammer body portion are attached to the chuck body portion of the C lathe, and can be slid forward and backward from the center of the chuck body portion. This is an embodiment in which a simple pressing member 5 is incorporated. The hammer setting jig base 4 is provided with a hole guide member 2 for a hammer rotation shaft hole in a bed (movable up and down (not shown)) for receiving the hammer 6. Also, hammer set jig stand 4
Has a stopper member 3 of a mallet body portion which can be variably set and has a fixed member (fine adjustment mechanism). The chuck fixed in the thickness direction of the hammer plate can be finely adjusted vertically below the hammer 6 and has a fixed chuck pawl 7 having a fixing member, and a movable chuck pawl 8 that slides up and down to chuck and fix the hammer. Has become. At the center of the chuck main body, a pressing member 5 that slides back and forth and presses the mallet forward is provided.

When the hammer 6 to be processed is set on the hole guide member 2 and processing is started, the hammer 6 is fixed to the chuck body by the movable chuck claw 8 and the pressing member 5, and the chuck body starts rotating and starts processing. The fine adjustment function of the stopper member of the hammer body part is for adjusting the processing error due to the difference between the dies for extracting the outer shape of the hammer and the difference in the outer shape due to the consumption of the dies.

The vertical fine adjustment function of the bed receiving the hammer 6 and the vertical fine adjustment function of the fixed chuck pawls 7 are for adjusting processing errors due to variations in plate thickness due to differences in material lots and the like. The pressing member 5 is provided with an elastic characteristic (in this case, an elastic characteristic is provided by a spring between the head portion and the driving portion of the pressing member) (not shown). . This elastic characteristic was performed with a spring this time, but may be anything, such as air pressure, hydraulic pressure, or rubber. The hammer is held and fixed by the upper and lower chucks at the time of processing, and the pressing member may be retracted after being fixed by the chuck.

[0009]

According to the present invention, a hammer setting jig base is provided on a chuck main body in a cutting machine of a press-fitting portion of a tip end coil spring of a hammer for pachinko ball firing, and a hammer is set on the hammer setting jig base. A hole guide member for guiding the rotary shaft hole is provided, and a movable pressing member for pressing the hammer body portion forward is provided on the chuck body, and the hammer body portion is located before and after the hammer body portion pressed forward by the pressing member. Since a stopper that fixes the position of the hammer is provided and it is fixed correctly in the thickness direction of the hammer, the worker only has to set the hammer on the hammer setting jig, and then remove the hand from the hammer. It is safe to work because of chucking. In addition, since the method of fixing the mallet is always stable, it has become possible to supply a more stable mallet with pachinko balls flying.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a conventional front view.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a front view of a mallet before processing.

FIG. 6 is a front view of a mallet after processing.

FIG. 7 is a front view of a processed hammer tip.

FIG. 8 is a front view of a spring.

FIG. 9 is a front view in which a spring is pressed into a hammer after processing.

[Explanation of symbols]

 Reference Signs List 1 hammer rotating shaft hole 2 hole guide member 3 stopper member 4 hammer set jig stand 5 pressing member 6 hammer 7 fixed chuck claw 8 movable chuck claw

Claims (1)

[Claims] In a cutting machine for press-fitting a coil spring of a tip of a pachinko ball firing hammer, a hammer set jig base is provided on a chuck body part, and a hammer rotation shaft hole is provided in the hammer set jig base. Providing a hole guide member for guiding, providing a movable pressing member for pressing the hammer body portion forward on the chuck body,
The hammer body portion is provided with a stopper for fixing the position of the hammer body portion pushed forward by the pressing member in the front-rear direction, so that the hammer processing machine for firing a pachinko ball that is correctly fixed in the thickness direction of the hammer plate. Chucking device.