JP3121301U - Punch mounting position detection device in forging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately grasp a correction amount at the time of readjustment of a punch mounting position, and to prevent a detection guide or a detection head from protruding outside.
The punch case 7 is configured to be movable up and down via a fulcrum bolt 11 with respect to a front plate 8 fixed to a ram 5 and swingable to the left and right around the fulcrum bolt 11. 6, the punch center deflection detection guide 23 is provided in the punch case 7, and the detection guide 23 is provided at the center of the front surface of the ram 5. The detection guide 23 is vertically and horizontally moved to detect the amount of displacement of the punch 6 relative to the reference mounting position in the direction perpendicular to the axial direction of the punch 6. A detection head 26 is provided so as to project, and a monitor 27 for displaying the amount of displacement detected by the detection head 26 is provided.
[Selection] Figure 3

Description

  The present invention relates to a punch attachment position detecting device in a forging machine that performs forging processing of a predetermined shape with a punch and a die.

  Bolts, nut members or various parts by forging the material between a die provided on the machine base and a punch attached to the front surface of the ram via a punch case so as to face the die For example, before punching is started, centering adjustment is performed so that the punch mounting position is adjusted so that the axis of the punch matches the axis of the die.

  By the way, even when the punch and the axis of the die are completely aligned in advance, backward processing for forming a hollow or cup-shaped product by driving the punch into the center of the material and extruding the peripheral edge of the material During the upset process in which a large-diameter head is formed at the end between the recess formed at the tip of the punch and the front surface of the die, the parallelism of the material end surface or the hardness of the material Due to the unevenness and the like, an eccentric load is applied to the punch and the punch is eccentric. As a result, the molded product may be unevenly formed and a defective product may be formed.

Therefore, a detection sensor that detects the displacement of the punch with respect to the reference mounting position of the punch by detecting the position of the detected member on the ram side and providing a detection sensor on the ram side is provided. There is known a punch attachment position detecting device that detects the amount of displacement of the punch, and can readjust the punch attachment position based on this displacement (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 7-15646 No. 3

  However, in the above-described punch attachment position detecting device, an L-shaped member to be detected that is clamped to the punch by a fixing bolt extends backward, and a detection sensor extends forward from the upper portion of the ram. Therefore, when performing the adjustment work by the vertical / horizontal position adjustment mechanism, the punch attachment position detection device is exposed and obstructs the appearance, and the appearance of the detected member and the detection sensor is also assembled. There was a problem that accuracy was also bad.

  Therefore, the present invention always displays the displacement amount of the punch during operation and can perform unmanned production with peace of mind, and the punch displacement amount detection member protrudes to the outside and becomes obstructive or uncomfortable. In addition, an object of the present invention is to provide a punch attachment position detecting device in a forging machine that can be assembled with high accuracy.

  In order to solve the above-described problems, the present invention forges the material between a die provided on the machine base and a punch attached to the front surface of the ram via a punch case so as to face the die. A punch attachment position detecting device in a forging machine that forms a product of a predetermined shape by moving the punch case up and down with respect to the ram side via a fulcrum bolt and centering on the fulcrum bolt With a structure that can swing left and right, it is mounted on the plane perpendicular to the axial center direction of the punch so that it can be adjusted in the vertical and horizontal directions. An axial center of the punch with respect to the reference mounting position of the punch, which is projected at the center of the front surface so as to be fitted to the detection guide and detects the vertical and horizontal movements of the detection guide Projecting the detection head for detecting a displacement amount in a direction perpendicular to the, and, characterized in that it comprises display means for displaying the displacement amount detected by the detecting head.

  According to the present invention, with the above-described configuration, the position of the punch runout detection guide attached in advance in the punch case is detected by the detection head attached to the center of the front surface on the ram side. The displacement amount in the direction perpendicular to the axial direction of the punch with respect to the reference mounting position is always detected and displayed by the display means. Thus, the readjustment operation can be easily and easily performed by adjusting the punch attachment position displayed on the display means so as to be the position in consideration of the correction amount. Moreover, since the runout detection guide 23 and the detection head are mounted in the punch case without being exposed to the outside, the display of the displacement amount of the punch can always be seen during operation, and unmanned production can be performed with peace of mind. In addition, the detection guide and the detection head do not get in the way and the appearance does not deteriorate, and the assembly work can be performed with high accuracy.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a schematic configuration of a forging machine provided with a punch attachment position detecting device according to the present embodiment will be described. As shown in FIGS. 1 and 2, the forging machine 1 is equipped at a predetermined position on a machine base 2. In the die block 3, a plurality of dies 4... 4 are held side by side at regular intervals. The machine base 2 is provided with rams 5 that move forward and backward with respect to the dies 4... 4, and the same number of punches 6. After being fitted and fixed to the punch cases 7..., These punch cases 7. In this case, a plurality of forging stations are constituted by the dies 4... 4 and the punches 6..., And the forward and backward movement of the punches 6. Accordingly, the supplied material is formed into a product stepwise by the forging performed between the dies 4... 4 and the punches 6.

  As shown in FIGS. 2 and 3, the front plate 8 is fixed to the ram 5 by a fastening bolt 9 provided at the lower part of the ram 5 and also serving as a guide rail and a fastening fixture 10 provided at the upper part. Yes. The punch cases 7... 7 are fixed to the front plate 8 by fulcrum bolts 11 and fixing bolts 12 and 12. In this case, the punch case 7 is slightly movable in the vertical direction and the horizontal direction with respect to the upper fixing bolts 12, 12, while being slightly movable in the vertical direction with respect to the lower fulcrum bolt 11. Yes.

  Further, a well-known up / down / left / right position adjusting mechanism 14 for adjusting the attachment positions of the punch case 7 and the punch 6 in the vertical direction and the horizontal direction with respect to the front plate 8 is provided across the punch case 7 and the front plate 8. The vertical and horizontal position adjusting mechanism 14 includes a pin 15 that is fixed at a position near the middle of the front plate 8 in the vertical direction and has a tip that projects into a hole 7 a provided in the punch case 7, and a flange on the upper front of the front plate 8. A screw shaft 16 supported by the portion 8a and having a lower end fixed to the upper portion of the punch case 7, and a pair of left and right screws that are screwed into the upper left and right side surfaces of the punch case 7 and whose tips contact the left and right side surfaces of the pin 15. Adjustment screws 17 and 18 are provided.

  By doing so, it is possible to adjust the punch case 7 up and down by rotating the screw shaft 16 around the pin 15 and to adjust the left and right position of the punch case 7 by rotating the left and right adjusting screws 17 and 18. Yes.

  In the present invention, the punch attachment position detection device 20 is attached to the ram 5 and the punch cases 7... 7 in the forging machine configured as described above. As shown in FIG. 2, the mounting position detection device 20 has a hole 7b at an intermediate position on the rear surface of the punch case 7, and includes a vertical position detection piece 21 and a horizontal position detection piece 22 in the hole 7b. While the punch center deflection detection guide 23 is provided, the punch 6 is projected at the center of the front surface of the ram 5 so as to be fitted to the detection guide 23 to detect the vertical and horizontal movements of the detection guide 23. A detection head 26 provided with a vertical position detection sensor 24 and a horizontal position detection sensor 25 for detecting the amount of displacement of the punch 6 in a direction perpendicular to the axial center direction of the punch 6 with respect to the reference mounting position is provided. A monitor (display means) 27 for displaying the displacement detected by the above is provided outside the apparatus. In this case, as shown in FIG. 5, a signal from the detection head 26 is input to the controller 28, and based on this, a signal is output from the controller 28 to the monitor 27. The installation position of is digitally displayed. Note that the vertical position detection piece 21 may be provided on the upper inner surface of the hole 7b, for example, and the left / right position detection piece 22 may be provided on the inner surface of one side of the hole 7b.

The operation of the punch attachment position detection device 20 configured as described above will be described.
First, before the forging starts, the position of the punch case 7 is adjusted by the screw shaft 16 and the adjusting screws 17 and 18 so that the axis of the punch 6 coincides with the axis of the die 4, and then the fulcrum bolt 11 and the fixing bolt 12, 12 is fastened and the punch case 7 is fixed. When the forging is started, the positions of the vertical position detection piece 21 and the horizontal position detection piece 22 in the detection guide 23 attached to each punch 5 are detected by the vertical and horizontal position detection sensors 24 and 25 of the detection head 26. Will be. In this case, since the detection guide 23 and the detection head 26 are mounted and mounted in the punch case 7, the displacement amount of the punch 6 is always and accurately detected, and the displacement amount. Is displayed on the monitor 27, and it becomes possible to accurately grasp the correction amount when the mounting position of the punch 6 is readjusted. Then, when the forging machine 1 is stopped and the attachment position of the punch 6 is readjusted based on the correction amount, the attachment position of the punch 6 being readjusted is displayed on the monitor 27. Thus, by adjusting the mounting position of the punch 6 displayed on the monitor 27 so as to take into account the correction amount, the readjustment work can be easily and accurately performed by anyone without requiring skill. Can be done well.

  Moreover, since the runout detection guide 23 and the detection head are mounted in the punch case without being exposed to the outside, the display of the displacement amount of the punch can always be seen during operation, and unmanned production can be performed with peace of mind. In addition, the detection guide and the detection head do not get in the way and the appearance does not deteriorate, and the assembly work can be performed with high accuracy.

  In the embodiment shown in the figure, the punch cases 7... 7, that is, the punches 6... 6 are attached to the front plate 8 detachably attached to the front surface of the ram 5. 4 can be exchanged all at once by simply attaching and detaching the front plate 8 as shown in FIG. 4, and the work at the time of setup change is improved.

  It is a schematic plan view of the forging machine equipped with the punch attachment position detecting device according to the present invention.   It is an enlarged front view of a punch and a punch case to which the same attachment position detection device is attached.   It is a principal part longitudinal cross-sectional view which shows the structure of the attachment position detection apparatus.   It is a longitudinal cross-sectional view which shows the exchange state of a punch.   It is a block diagram which shows the display system in the attachment position detection apparatus of a punch.

Explanation of symbols

1 forging machine 4 die 5 ram 6 punch 7 punch case 8 front plate 11 fulcrum bolt 23 punch center runout detection guide 26 detection guide 27 monitor

Claims (1)

  A forging machine that forms a product of a predetermined shape by forging a material between a die provided on the machine base and a punch attached to the front surface of the ram via a punch case so as to face the die. The punch mounting position detecting device in claim 1, wherein the punch case can be moved up and down with respect to the ram side via a fulcrum bolt, and can be swung left and right around the fulcrum bolt. A punch core runout detection guide is provided in the punch case so that it can be adjusted in the vertical and horizontal directions on a plane perpendicular to the core direction, and the detection guide is fitted in the center of the front surface on the ram side. Detecting the displacement of the detection guide in the direction perpendicular to the axial direction of the punch relative to the reference mounting position of the punch by detecting the vertical and lateral movement of the detection guide Projecting the head, and the mounting position detecting device of the punch in the forging molding machine, characterized in that it comprises a display means for displaying the displacement amount detected by the detecting head.

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