JP3706994B2 - Rolling equipment in multi-stage forging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention utilizes a multi-stage forging machine that forges a metal material from a rough to fine continuous multi-stage with a punch and a die corresponding thereto to forge-mold shaft parts, collars, bushes, etc. In particular, the present invention relates to a rolling device that can perform processing such as marking coining, grooving or thread rolling continuously and fully automatically by rolling.
[0002]
[Prior art]
An apparatus that incorporates a sheet rolling device into a multi-stage forging machine that forms a bush or collar of an appropriate shape and size through a plurality of forging processes, and enables continuous rolling from forging to for example a special feature. This is described in JP-A-63-131292. The apparatus described in this publication has a structure in which a plate rolling device that operates in synchronism with the forging portion is provided in the forging section so that rolling from rolling to rolling can be performed continuously and fully automatically in the flow process. .
[0003]
[Problems to be solved by the invention]
By the way, the above-mentioned known device has a screw tooth on the opposed flat surface portion, and a plate provided with a set of plate rolling dies that perform rolling by sliding relatively straight from the drive device by crank motion. Although a rolling device is used, the plate rolling device has a structure in which a set of plate rolling dies is relatively slid linearly in a crank motion to perform rolling, and is limited to its stroke. There are drawbacks. For example, when the diameter of the forging material is 5 mm, a stroke of about 15 mm is necessary, and the above-mentioned plate rolling apparatus is limited to rotating the forging material once. For this reason, it has been difficult to perform highly accurate marking stamping, grooving or thread rolling on the forged material.
[0004]
Therefore, the main object of the present invention is to perform processing such as marking stamping, grooving or thread rolling with high accuracy on the forging material by adopting a roller rolling mechanism while being able to continuously perform rolling from forging. It is to provide a rolling device in a multi-stage forging machine that can be used, and another object is to unitize the roller rolling mechanism so that it is compatible with die cases for processing such as forging, piercing, trimming, and sizing. It is to provide a rolling device that can be used.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention described in claim 1 of the present application is a cutter having a predetermined length using a cutter that intermittently feeds a continuous metal material to the tip end of the quill and moves it back and forth across the tip end of the quill. A multi-stage type consisting of a device for cutting and a forging part for forging from rough to fine with a punch and a die while sequentially transferring the cut material with a material transfer device In the forging machine, a base member for rolling is provided on the die block in the forging portion, and the base member is paired with a fixed side roller and the roller. A rolling roller for applying a roller, a drive mechanism having a drive motor for driving and rotating the rolling roller, and a rolling position and a retracted position in conjunction with the movement of the pressing ram with respect to the fixed roller. While Ru is provided a swinging mechanism for swinging the bets, the swinging mechanism includes a swinging shaft which is rotatably supported on rolling for the base member, it is fixed to the front and rear shaft swinging A pair of oscillating links is provided, and a free oscillating end portion of the front oscillating link rotatably supports a driving shaft having a rolling roller at one end and a driving gear fixed at the other end, and a rear oscillating link. A cam actuating mechanism that rotates in conjunction with the movement of the forging ram and swings the link at a predetermined angle is brought into contact with the free end portion of the cam .
[0007]
Further, the invention according to claim 2 of the present application is driven by the gear on the output side provided on the line where the drive gear of the rolling roller in the invention of claim 1 intersects with the swing locus of the gear at the time of rolling. It is characterized by being.
[0008]
In the invention of claim 3 of the present application, the rotational speed of the drive motor in the invention of claim 2 can be arbitrarily changed, and the rotational speed of the rolling roller by the motor depends on the rolling processing conditions. In addition to being changed, it is driven and rotated in both the rolling position and the retracted position.
[0009]
Further, in the invention of claim 4 of the present application, the base member in the invention of claim 1 is formed in a case shape, and a drive motor is supported in the base member, and a fixed side roller, a rolling roller, and a drive mechanism are supported on the base member. The swing mechanism is integrally assembled into a unit, and the rolling unit is configured to be compatible with the die case.
[0010]
Furthermore, the invention of claim 5 of the present application is characterized in that, in the invention of claim 1, two fixed-side rollers are used, and a roller-type rolling structure of three-point support is constituted by these rollers and the rolling roller. .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a multi-stage forging machine equipped with a roller rolling device of the present invention, comprising a cutting device 10 on one side and a forging portion 20 consisting of three forging steps in the middle, and other forging portions 20. On the side, a roller rolling device 30 is provided at the final die position of the die block 20a.
The cutting device 10 feeds the metal material 1 made of a continuous wire intermittently so as to protrude from the tip end of the quill 11 by a feeding device 12 at a constant length, and moves forward and backward so as to cross the tip end of the quill 11. Cut to a certain length with the cutter 13
The forging portion 20 includes a plurality of dies 21, 22, and 23 provided so as to be arranged in parallel at predetermined intervals, and punches 25, 26, and 27 provided in the forging ram 24 so as to face each other. Thus, a material transfer mechanism (not shown) having a transfer chuck for sequentially chucking the pressed material (hereinafter referred to as a pressed material) 1a and feeding it for each operation of the pressing ram at a position immediately before each die. ) Is provided.
[0013]
As shown in FIGS. 2 and 3, the roller rolling device 30 includes a base member 31 that is detachably attached to a final position of the die of the die block 20 a and a fixed-side roller supported by the base member 31. 32 and the roller 32, a roller having a rolling roller 33 for marking marking by rolling on the forged material between the roller 32, and a drive having a drive motor 34 for driving the roller 33. A mechanism 35 and a swinging mechanism 36 that swings the rolling roller 33 to the rolling position shown in FIG. 3 and the retracted position shown in FIG. I have.
[0014]
The swing mechanism 36 includes a swing shaft 37 rotatably supported by the base member 31 and a pair of swing links 38 and 39 fixed to the front and rear portions of the swing shaft 37. A drive shaft 41 having a rolling roller 33 fixed at one end and a drive gear 40 fixed at the other end is rotatably supported at the free end of the moving link 38, while at the free end of the rear swing link 39. The cam body 42 of the cam operating mechanism that rotates in conjunction with the movement of the forging ram 24 and swings the link 39 by a predetermined angle is in contact. The swing shaft 37 is provided with a spring 37a for urging the rear swing link 39 toward the cam body 42.
The cam body 42 of the cam swing mechanism swings both the swing links 38 and 39 in synchronization with the movement of the forging ram 24, and the front swing link 38 swings in the clockwise direction to the punch die. The rolling roller 33 is brought close to the fixed roller 32 at the rushing time to be positioned at the rolling position shown in FIG. 3 to enable the rolling of the forging material 1a. After the rolling process is completed, the rolling roller 33 is counterclockwise. 4 is positioned at the retracted position shown in FIG. 4 separated from the fixed side roller 32 so as to allow the workpiece to be discharged.
[0015]
The drive mechanism 35 includes a drive gear 40 provided on the drive shaft 41 of the rolling roller 33, a drive motor 34 having an output gear 43 supported by the base member 31, an output gear 43, and a drive gear 40. The interlocking gear 44 is provided on a line that intersects the swinging locus of the drive gear 40 at a right angle when the rolling roller 33 is located at the rolling position, and when the rolling roller 33 is retracted. The drive gear 40 is separated from the interlocking gear 44 so that the engagement between the drive gear 40 and the interlocking gear 44 is not disengaged, that is, the rolling roller 33 is separated from the fixed roller 32 to discharge the processed product. It is configured to enable.
[0016]
The rotation speed of the drive motor 34 can be arbitrarily changed. The rotation speed of the rolling roller 33 can be changed by the drive motor 34 in accordance with the rolling processing conditions. In either the production position or the retracted position, that is, it is always driven to rotate.
[0017]
Further, the base member 31 is shaped like a case, and the drive motor 34 is supported in the base member 31, and the fixed side roller 32, the rolling roller 33, the drive mechanism 35, and the swing mechanism 36 are integrated with the base member 31. The rolling unit A is configured to be compatible with a die case for processing such as forging, piercing, trimming, and sizing.
[0018]
Next, the operation of the rolling device configured as described above will be described.
First, when a forging material 1a such as a shaft part or a collar is formed by the third stage die 23 of the forging part, the forging material 1a is pushed out from the third stage die 23, and a material transfer chuck (not shown). 2) and is carried to the roller rolling device 30. Then, as the forging ram 24 advances, the forging material 1 a in the chuck is pushed out by the punch 45 and pushed into the rolling position facing the fixed side roller 32 and the rolling roller 33. Next, the swinging mechanism 36 swings through the cam body 42 of the cam swinging mechanism that is interlocked with the movement of the forging ram 24 almost simultaneously with the push-in timing, and the rolling roller 33 approaches the fixed roller 32 side. Then, it is moved to the rolling position, and the rolling process is performed by both rollers 32 and 33. That is, the cam body 42 causes the rear swing link 39 to swing downward (clockwise) as shown in FIG. 3, so that the front swing link 38 is moved in FIG. The rolling roller 33 is moved to the rolling position close to the fixed roller 32 side. The rolling roller 33 is always driven to rotate by the drive motor 34 via the interlocking gear 44. The rolling material 1a is subjected to rolling processing between the rollers 32 and 33, and the outer circumferential surface of the forging material 1a is formed. Marking coining will be performed.
[0019]
Further, when the marking coining process is finished, the pushing down of the rear swing link 39 by the cam body 42 is released, and at that moment, the free end of the rear swing link 39 is directed upward (counterclockwise) by the pressing force of the spring 37a. ). As a result, the front swing link 38 is swung counterclockwise via the swing shaft 37, and the rolling roller 33 is moved to the retracted position separated from the fixed roller 32 side. By this movement, the forged material 1a is released and dropped, and is collected as a color product at a predetermined place through a chute (not shown) facing downward. In that case, the swing angle of the rolling roller 33 is such that the compacted material 1a is opened, and when the rolling roller 33 moves to the retracted position, the engagement between the drive gear 40 and the interlocking gear 44 does not come off. . Accordingly, the rolling roller 33 is always driven to rotate by the drive motor 34, and when the rolling roller 33 moves to the rolling position, the rolling roller 33 immediately rotates the forging material 1a by a plurality of rotations under high speed rotation. Thus, the stamping material 1a can be processed with a marking coin with high accuracy.
[0020]
In addition, since the forging material 1a can be rolled by rotating a plurality of the forging materials 1a as described above, it can be applied to, for example, high-precision grooving or thread rolling, and further, the fixed side roller 32 and the rolling material can be rolled. As shown in FIG. 5, the roller 33 can be used to correct the axial bending of the long-axis forging material 1a.
[0021]
In the above-described embodiment, the two-point roller rolling device using one fixed side roller 31 has been described. However, as shown in FIG. A point-supporting roller rolling device may be used. If comprised in this way, it will become possible to perform the foam rolling of a hollow forging material favorably.
[0022]
Furthermore, according to the roller rolling device, since the forging material 1a is rotated, it is possible to detect the coaxiality and the runout.
[0023]
In addition to providing the fixed roller 32 and the rolling roller 33 horizontally as in the above-described embodiment, for example, a roller having a large diameter can be employed if it is disposed at an angle of 45 degrees.
[0024]
【The invention's effect】
As described above, when the forging material is forged in the forging portion of the multi-stage forging molding machine as described above, it can be supplied to a roller rolling device to continuously perform rolling from forging, In addition, since the rolling material can be rolled by rotating a plurality of forging materials with a rolling roller that is driven to rotate by a drive mechanism by a drive motor, high-precision grooving, screw rolling, marking stamping, etc. are applied to the forging material. Can do. In addition, there is provided a swinging mechanism that swings the rolling roller to the rolling position and the retracted position in conjunction with the movement of the pressing ram with respect to the fixed side roller. A swing shaft rotatably supported by the member, and a pair of swing links fixed to the front and rear portions of the swing shaft, and a rolling roller at one end at the free end of the front swing link Is a cam that rotatably supports a drive shaft having a drive gear fixed to the other end, and rotates the link at a free angle at the free end portion of the rear swing link to swing the link at a predetermined angle. Since the actuating mechanism is brought into contact, the cam actuating mechanism causes the two oscillating link members to oscillate in synchronism with the movement of the forging ram. When the punch enters the die, the rolling roller is fixed to the fixed roller. Is positioned in the rolling position close to To enable rolling of, also, after completion of the rolling process is positioned in the retracted position is moved in the direction away the rolling roller from the fixed side roller, it is possible to allow the discharge of the workpiece. As a result, a consistent manufacturing operation from forging to rolling can be performed, and the manufacturing operation can be performed continuously and smoothly in synchronization with the movement of the forging ram.
[0025]
Further, the base member is shaped like a case, and the motor is supported in the base member, and a fixed side roller, a rolling roller, a drive mechanism and a swing mechanism are integrally assembled with the base member to form a unit, and the roller Since the rolling device is configured to be compatible with the die case, the rolling unit can be replaced with a die case for processing such as forging, piercing, trimming, and sizing.
[0026]
Further, when two fixed-side rollers are used and a three-point supported roller rolling structure is constituted by these rollers and the rolling roller, the foam rolling of the hollow forged material can be performed satisfactorily.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a multistage forging machine equipped with a rolling device according to the present invention.
FIG. 2 is a partial cross-sectional view of a rolling device portion.
FIG. 3 is a front view of the rolling device.
FIG. 4 is a front view of a rolling device in which a rolling roller is swung to a retracted position.
FIG. 5 is an explanatory view showing a state of correction of shaft bending by a rolling roller.
FIG. 6 is a front view showing another embodiment of the roller rolling device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cutting device 20 Forging part 24 Forging ram 30 Roller rolling device 31 Base member 32 Fixed side roller 33 Rolling roller 34 Drive motor 35 Drive mechanism 36 Swing mechanism 37 Swing shaft 38 Front swing link 39 Rear swing link 40 drive gear 41 drive shaft 42 cam body

Claims (5)

A continuous metal material is intermittently sent to the tip end of the quill and cut into a predetermined length with a cutter that moves forward and backward to cross the tip end of the quill, and the cut material is sequentially transferred to the material transfer device. In a multi-stage forging machine comprising a forging part forging from a rough shape to a fine shape with a punch and a die while being transferred, and forging a forging material having a predetermined shape, a base member for rolling is formed on the die block in the forging part. A fixed roller on the base member and a pair of the roller and a rolling roller for rolling the forging material between the roller and a drive for driving and rotating the rolling roller. a drive mechanism having a motor, while Ru provided a swinging mechanism for swinging to the retracted position and the rolling position in conjunction to the fixed rollers and the rolling rollers to the movement of the forging ram, the swing mechanism Includes a pivot shaft which is rotatably supported on rolling for the base member, a pair of swing link that is secured to the front and rear shaft swinging, the free end portion of the front swing links, one end A rolling roller rotatably supports a drive shaft having a drive gear fixed at the other end, and the free end portion of the rear swing link rotates in conjunction with the movement of the forging ram to swing the link at a predetermined angle. A rolling device in a multistage forging machine, wherein a cam operating mechanism to be moved is brought into contact . The multi-stage forging machine according to claim 1, wherein a driving gear of the rolling roller is driven by an output-side gear provided on a line perpendicular to a swing locus of the gear during rolling. Rolling equipment in. The rotation speed of the drive motor can be arbitrarily changed. The rotation speed of the rolling roller is changed according to the rolling processing conditions by the motor, and it is driven at both the rolling position and the retracted position. rolling device in the multi-stage forging molding machine according to claim 2, characterized in that it is rotated. The base member is shaped like a case, the drive motor is supported in the base member, and the fixed side roller, the rolling roller, the drive mechanism, and the swing mechanism are integrally assembled with the base member to form a unit, and the rolling The rolling device in a multistage forging machine according to claim 1, wherein the forming unit is configured to be compatible with the die case . 2. The rolling device in a multistage forging machine according to claim 1, wherein two fixed-side rollers are used and a three-point roller-type rolling structure is constituted by these rollers and the rolling roller .

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