JPH07112588B2 - Die adjusting method for flat die rolling machine and die set and gauge body used in the method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can easily and accurately determine the relative position and angle of both dies by sandwiching a gauge body between a pair of dies of a flat die rolling machine. The present invention relates to an adjustable method and a die set and a gauge body used in the method.

Problems to be solved by the conventional techniques and inventions A flat die rolling machine for forming screw threads of bolts has a die block mounted on the frame so that its position can be adjusted, and left and right in front of the die block. A pair of dies with irregularities for molding formed on the front face of the ram that reciprocates in the opposite direction, and the ram is moved by pressing the material between the dies to roll the ram. It is designed to be deformed and rolled, but in order to perform rolling accurately, it is necessary for both dies to be parallel to each other with a predetermined interval and the phases of the irregularities of both dies to match. It is necessary to adjust the relative position and angle of both dies by adjusting the position of the die block based on the operator's intuition by observing the finished state of the rolled material. Also Since the optimum position and angle of the dice were searched for by rewinding, not only the adjustment work was difficult but also a long time was required.

Means for Solving the Problems As means for solving the above problems, a method for adjusting a die of a flat die rolling machine according to a first aspect of the present invention is arranged between a frame and a pair of dies fixed to a ram that face each other. , By sandwiching a gauge body formed on both sides with projections and depressions that match the molding projections and depressions formed on the opposing surfaces of the pair of dies, after positioning the dies with respect to the frame and ram, The die set of the second invention used for the method of the first invention is configured to be detached from the space between the dies to the gauge body, and is fixed to the die block fixed to the frame and the ram that reciprocates in the left-right direction on the front surface of the die block. Between the pair of dies attached to the die block and the die block that is formed on both sides of the die block. While the gauge body is sandwiched, a pair of dies are integrally coupled by a fastener that is detachably mounted between both die blocks, and the gauge body of the third invention used in the first invention also has a front surface. In addition, a pair of gauge plates with concaves and convexes that match the concaves and convexes of the straight line formed on the opposing surfaces of the pair of dies are stacked back to back, and one gauge plate is placed on the back of the pair of gauge plates. Form a pair of mating strips that are parallel to the irregularities to freely fit each other in the lengthwise direction to allow relative movement of the pair of gauge plates along the mating strips of the pair of gauge plates. The stopper is attached so that it can be removed.

Action and Effect of the Invention The present invention has the above-mentioned configuration, and according to the method of the first invention,
By sandwiching the gauge body between a pair of dies,
The unevenness of both dies and the unevenness of the gauge body match each other,
Both dies are positioned in the frame and the ram in a state that they are parallel to each other with a predetermined gap, and the phases of the irregularities of both dies are matched, and then the gauge body is removed from between the dies. Therefore, it is not necessary to re-adjust the position of the die many times as in the conventional method, and the position and angle of the die can be adjusted quickly and accurately by the simple work of sandwiching the gauge body between both dies. And the second method in the first invention method.
When the die set of the invention is used, both dice are parallel to each other with a predetermined gap by sandwiching the gauge body, and the relative position and angle of both dice are adjusted by matching the phase of the unevenness. The two die blocks of this die set should be positioned as rams on the frame, and after the fasteners and gauges have been removed, the die set should be assembled beforehand. As a result, there is no need to adjust both dies at the site, and there is an effect that the work performed at the site can be simplified. Furthermore, when the gauge body of the third invention is used in the method of the first invention, this gauge body is used. After positioning both dies with respect to the frame and ram by sandwiching them, remove the stopper and make One gauge plate that forms the slide along the unevenness and the fitting line is pulled out, and after that, the remaining gauge plate is pulled out from between the dies, without moving the fixed die. Since the body is removed, it is not necessary to memorize the position after positioning, move the dice so that the interval is widened, remove the gauge body, and then move it again to return to the original position. The work will be easier and
There is an effect that there is no fear that the adjustment position is misaligned due to the movement of the die.

EXAMPLES Examples of the die set of the second invention in a flat die rolling machine for thread forming of bolts and examples of the method of the first invention using the die set will be described below with reference to FIGS. 1 to 4. explain.

As shown in the drawing, a ram 3 having a mounting portion 4 formed in a front surface is connected to a slide guide 2 formed in a substantially L-shaped recess of a frame 1 via a rod 3a and connected to a crank shaft (not shown). The mounting portion 5 corresponding to the mounting portion 4 is recessed in the frame 1 in front of the ram 3, and the bottom plate portion 1a of the mounting portion 5 has a push bolt 36 protruding its tip. A pulling bolt 39 with a flange having a male screw portion 40 formed at the tip is penetrated upward into the long hole 38, and is attached to the side plate 44 fixed to the side surface of the frame 1 by the bolt 42. , The push bolt 45 attaches its tip to the mounting portion 5.
A pull bolt 48 with a flange, which is screwed in a lateral direction so as to face the inside and has a male screw portion 49 at its tip, penetrates into the elongated hole 47 in the same direction, and also the back wall portion of the frame 1.
On the left and right sides of the 1b, two upper and lower push bolts 50, 50 are screwed forward with the tips facing the mounting portion 5, and the left and right with respect to the push bolt 50. Pull bolts 55, 55 with flanges are penetrated at positions displaced in the direction with the male screw portion 56 at the tip thereof facing the mounting portion 5, and the mounting portion 5 and the mounting portion 4 of the ram 3 described above are penetrated. The die set 6 is inserted in between and mounted.

The die set 6 has mounting recesses 10 formed on the front surface of the moving die block 8 mounted on the mounting portion 4 of the ram 3 and on the front surface of the fixed die block 9 mounting on the mounting portion 5 of the frame 1, respectively. , 11 is a concavo-convex shape for molding which is composed of a plurality of straight-line ridges inclined to the front facing each other.
A pair of dies 12a, 12b formed by forming 14a, 14b are fitted and fixed by pressing the upper surface with pressing bodies 16, 16, and between the dies 12a, 12b, the unevenness is formed.
A pair of right and left fastening plates inserted between the upper surfaces of both die blocks 8 and 9 by sandwiching plate-shaped gauge bodies 20 formed on both sides with concavities and convexities 18a and 18b aligned with 14a and 14b. A through hole 23 provided at one end of each of 22, 22 is tightly fitted to the protruding upper end portion of a locking pin 25 that is tightly fitted in a fitting hole 24 formed in the moving die block 8. In addition, the taper hole 26 formed at the other end of the fastening plate 22 corresponds to the eccentricity on the moving side die block 8 side with respect to the female screw hole 27 formed in the fixed side die block 9, and the outer circumference is tapered. By screwing the fastening bolt 30 having the surface 31 into the female screw hole 27, the tapered surface 31 presses the inner peripheral surface of the tapered hole 26 of the fastening plate 22 to the moving side die block 8 side with a gap, and the moving side. The die block 8 and the fixed side die block 9 move relative to each other. The dies 12a, 12b are aligned with each other by aligning the respective concavities and convexities 14a, 14b with the concavities and convexities 18a, 18b of the gauge plate 20 while maintaining the same height on the upper surface, and thereby forming a predetermined distance from each other. And are parallel to each other, and are integrally united so that the phases of both the concave and convex portions 18a and 18b match each other. Further, on the back surface of the die block 9, vertically long fitting grooves 51 and 51 are provided. The adjusting plate 52 is formed so that the adjusting plate 52 is fitted into each fitting groove 51.

Next, the procedure for mounting both dies 12a and 12b on the ram 3 and the frame 1 using this die set 6 will be explained. First, the die block 8 on the moving side of the die set 6 is fitted to the mounting portion 4 of the ram 3. Wear it and press the top and one side
By pressing with 34, the dies 12a, 12b are parallel to the movement direction of the ram 3, and the irregularities 14a, 14b are fixed at a predetermined inclination angle with respect to the rolling direction of the bolt material a. , Lightly abut the tips of the push bolts 36, 46 on the bottom surface and the side surface of the die block 9 on the fixed side, and attach the male screw portions 40, 49 of the pull bolts 39, 48 to the collars 39a, 4
Screw in until the 8a hits the frame 1 lightly, and on the back side, insert the adjustment plate 52 into the fitting hole 51 of the die block 9.
And lightly abut the tip of each push bolt 50 on the rear surface, and attach the male screw part 56 of each pull bolt 55 to the collar 55a.
Dice block 9 so that it is slightly separated from frame 1.
Fixed side die block 9
Is held, and the die set 6 is positioned. Then, in the positioned state, as shown by the chain line in FIG. 2, the fastening bolts 30 screwed onto the upper surface of the fixed die block 9 are removed and fitted into the fastening plate 22 and the moving die block 8. The fastening pin 25 attached to the die block 8 is removed to enable the relative movement of the die blocks 8 and 9, and the adjustment plate 52 on the back side of the die block 9 on the fixed side is pulled out so that the push bolt 50 on the back side can be removed. A gap is formed in the front-rear direction with the fitting groove 51, and the pulling bolts 39 and 48 move in the long holes 38 and 47 while rubbing the bottom surface and the side surface of the die block 9 against the tips of the pushing bolts 36 and 45. Thus, when the fitting groove 51 and the tip of the push bolt 50 are moved backward so as to narrow the gap, as shown in FIG. 3, the gap between the fixed side die 12b and the moving side die 12a. Spread and was sandwiched between both dice 12a, 12b Since the gauge body 20 can be removed, after the gauge body 20 is removed, the gap between the fitting groove 51 and the tip of the push bolt 50 on the fixed side die block 9 becomes a little wider than the above-mentioned positioning state. To the front, and then the removed adjustment plate 52 is re-fitted into the original fitting groove 51, and the die block 9 is pushed by pressing the bottom surface and the side surface of the die block 9 as shown in FIG. The adjustment plate 52 is moved a little backward until it hits the tip of the rear side push bolt 50 while hitting the tips of 36 and 45, so that the state when the die block 9 is positioned is returned, so that position is maintained. While tightening, tighten the lock nuts 37, 46 and 53 of the push bolts 36, 45 and 50, respectively, and tighten the pull bolts 39, 48 and 55 to the respective collars 39.
By applying a, 48a and 55a to the frame 1 and tightening them, both dies 12a, 12b are parallel to each other with a predetermined gap, and the phases of the concavities and convexities 14a, 14b match each other,
Further, the adjustment work is completed by fixing the bolt material a in a state of forming a predetermined inclination angle with respect to the rolling direction of the bolt material a. The bolt material a is supplied along with it, and when it is rolled while being pinched with the movement of the ram 3, the bolt material a
Accurate rolling is performed by forming appropriate threads on the outer circumference.

In the above embodiment, after the positioning, the die block 9 on the fixed side is moved to move both dies 12a, 1a.
I tried to remove the gauge body 20 by widening the interval of 2b,
Instead of this, a pressing body that fixes both dies 12a, 12b
After removing 16 and 16, both dies 12a and 12b and the gauge body 20 sandwiched therebetween are lifted from the mounting recesses 10 and 11 of both die blocks 8 and 9 as a unit, and then both dies are removed.
The gauge body 20 may be removed by fixing only 12a and 12b to the die blocks 8 and 9.

Next, an embodiment of the gauge body of the third invention will be described with reference to FIGS. 5 and 6. The gauge body 60 of this embodiment is aligned with the unevenness 14b of the die 12b fixed to the frame 1 on the front surface. The gauge plate 62 on which the inclined concave and convex portions 63b are formed is aligned with the concave and convex portions 14a of the moving side die 12a fixed to the ram 3 on the front surface, and has a different inclination direction from the concave and convex portions 63b of the fixed side gauge plate 62. A gauge plate 61 on which irregularities 63a are formed is superposed in close contact with each other back to back, and a concave strip 65 parallel to the irregularities 63b is formed on the back surface of the fixed gauge plate 62. At the same time, on the back surface of the gauge plate 61 on the moving side, a convex strip 66 that matches the concave strip 65 is formed, and the concave strip 65 and the convex strip 66 are fitted tightly and slidably to each other, and the fixed side Of the gauge plate 62 on one side of the gauge plate on the moving side.
By abutting against the locking portion 67 formed at the diagonal lower end portion of the convex strip 66 of 61, it becomes impossible to relatively move diagonally downward, and the upper end surfaces of both gauge plates 61 and 62 are at the same height, Both gauge plates 61, 62 which are overlapped have a predetermined thickness while making their front surfaces parallel to each other and the phases of the unevennesses 63a, 63b on both sides match each other.
By attaching a stopper plate 68 wider than the thickness of both gauge plates 61, 62 to the upper surface of 62 and fixing it to the upper surface of the moving side gauge plate 61 with bolts 69, 69, the fixed side gauge plate 62
Is prevented from moving obliquely upward along the concave line 65 with respect to the moving side gauge plate 61.

When adjusting the dice 12a, 12b using this gauge body 60, while moving the dice 12a, 12b relative to each other while sandwiching the gauge body 60 between the dice 12a, 12b, respectively. Both dies 12 with the upper surface in close contact with the lower surface of stopper plate 68
By fixing a and 12b to the ram 3 and the frame 1,
Both dies 12a, 12b are positioned so that accurate rolling can be performed.After positioning, the stopper plate 68 is removed and the fixed side gauge plate 62 is moved to the movable side gauge plate 61 and the fixed side gauge plate 62. With the concave strip 65 and the convex strip 66 from between the die 12b and the concave and convex 14b of the die 12b on the fixed side, the slide plate is slid obliquely upward while being withdrawn, and a gap is left after the withdrawal. Is removed while moving the concave and convex portions 63a and the concave and convex portions 14a of the moving side die 12a so as to be separated from each other, so that the gauge body 60 is removed without moving the positioned dies 12a and 12b.

[Brief description of drawings]

1 to 4 of the accompanying drawings show a flat die rolling machine which is applied to an embodiment of the method of the first invention using the die set of the second invention, and FIG. 1 is a partially cutaway plan view, The figure is a partial cutaway side view, FIGS. 3 and 4 are partial cutaway partial side views showing the procedure of adjusting the die, and FIGS. 5 and 6 are gauges of the third invention, respectively. FIG. 3 is an exploded perspective view of the embodiment of the body and a side view of the assembled state. 1: Frame, 3: Frame, 8: Dice block (on ram side), 9: Dice block (on frame side), 12a, 12b: Dice, 14a, 14b: Roughness (on die), 18a, 18b, 63a, 63
b: unevenness (of gauge body), 20, 60: gauge body, 22: fastening plate,
25: Fastening pin, 30: Fastening bolt, 65: Recessed line, 66: Relief line, 68:
Stopper board

Claims (3)

[Claims] 1. A gauge body comprising a pair of dies fixed to a frame and a ram, which are opposed to each other, and on both sides of which a concavo-convex pattern is formed which matches the concavo-convex pattern for molding formed on the opposing surfaces of the pair of dies. After sandwiching, the positioning of the dies with respect to the frame and the ram,
A die adjusting method for a flat die rolling machine, characterized in that the gauge body is removed from between the two dies. 2. A die block fixed to the frame,
Between the pair of dies attached to the die block fixed to the ram that reciprocates in the left-right direction on the front surface of the die block, both sides are provided with irregularities for matching with the molding irregularities formed on the opposing surfaces of the pair of dies. A die for a flat die rolling machine characterized in that the pair of dies are integrally coupled by a fastener that is detachably mounted between the die blocks while sandwiching the gauge body formed in Dice set used for adjustment method 3. A pair of gauge plates, on the front surface of which a concave and convex shape is formed so as to match the molding concave and convex formed on the opposite surfaces of the pair of dies, and which are back to back, and the back surface of the pair of gauge plates. A pair of fitting ridges parallel to the concave and convex of one of the gauge plates are freely fitted to each other in the lengthwise direction, and the fitting of the pair of gauge plates to the pair of gauge plates is performed. A gauge body used for a die adjusting method of a flat die rolling machine, which is detachably attached with a stopper for preventing relative movement along a flat line.