JPS63207441A - Cutting machine with forging machine - Google Patents

Abstract

PURPOSE:To work a cut billet in uniform dimensional shape and to smoothly perform the transfer by a pusher inside a heating furnace by attaching a forging machine to a cutting machine in the case of cutting a metal rod stock in a billet in specific length. CONSTITUTION:The metal rod stock on a material placing base 11 is placed on a V roller 22 by a feeding pawl 12 and inserted among four pinch rollers 31 in a constraining feed mechanism 3 by the driving of the V roller 22. The metal rod stock is strongly pinched with the rotation of a cross arm 32 by a cylinder 33, a bar stock 65 is fed to a press machine 4 by driving the pinch roll 31 by rotating it and abutted to the stopper head 56 of a cutting machine 40 in the state of applying compression force. The upper end face of an upper blade holder 53 is then beated by the lower end face 43 of an upper die 42 with the actuation of a ran 41, an upper blade 52 is slided downwards and the bar stock 65 is cut between the upper blade 52 and lower blade 46 to make a billet. The billet is fed to the heating furnace of the succeeding stage by forming it in uniform dimensional shape with the forging of the press machines 4 of a clamp press, hydraulic press, etc.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a cutting machine equipped with a forging machine.

Specifically, the present invention relates to a cutting machine that corrects cutting distortion of a workpiece by attaching a forging machine to the restraint cutting machine.

[Prior art] There are various methods for cutting bars, such as cutting with a saw or gas, but among these methods is a restraint method in which the bar is pressed against a constant material stopper, compressive force is applied in the axial direction, and shearing is performed perpendicular to the axial direction. Cutting machines are known. This restraint cutting machine is mainly used in the field of cutting forged materials into required sizes. Because this restraint cutting machine uses a shearing method, it has the characteristics of being able to cut a large amount of material in a short period of time, producing no cutting waste and producing no waste, and having a good cutting surface.

[Problems to be Solved by the Invention] However, the billet cut due to shearing is slightly deformed and is not symmetrical. It also often has burrs and scratches.

For this purpose, as shown in FIG. 7(a), the cut billets are aligned in a line and pushed by the pusher 100, and then placed in the heating furnace 100.
Pour it inside and heat it. At this time, as shown in FIG. 7(b), because the cut surface of the cut billet 65 is not perpendicular to the axis of the billet 65, the end faces may not contact each other and the billet cannot be fed normally, causing the billet to collide with the furnace wall and cause an accident. may occur. In order to solve these problems, the present invention provides symmetry to the billet by attaching a press to a cutting machine for cutting the billet.

[Means for solving the above problems] In order to solve the above problems, the present invention employs the following measures.

A bar feeder that continuously supplies bars, a cutting blade that shears the bars supplied from the bar feeder, a forging device that receives and forges the cut bars, and the cutting blade and forging. This is a cutting machine with a forging machine that has a press machine that is driven in conjunction with the device.

U action] Bars are continuously fed from a bar magazine with a bar supply device, the supplied bars are cut with a cutting blade, the cut billet is forged with a forging device, and this cutting and forging are combined. This is done at the same time using the same press machine.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 is a plan view of a restraint cutting machine with a forging press device according to the present invention, and FIG. 5 is a front view thereof. The bar magazine 1 is used to place and stock bar materials, and also serves as a material warehouse. A bar supply table 2 is provided parallel to the material mounting table 11 of the bar magazine 1. The material mounting table 11 is inclined toward the bar material supply table 2 side, and the bar material is naturally inclined to the bar material supply table 2ff! It is designed to move to l.

From the side of the bar material supply table 2 of the material placement table 11, there is a rotating shaft 13.
is provided, and a feed pawl 12 is fixed to the rotating shaft 13. A drive mechanism (not shown) rotates the rotating shaft 13, moves the feed claw 12, and sends the bar to the bar supply table 2 in a direction perpendicular to the axis of the bar. On the bar supply table 2, a V roller 22 is rotatably provided between both frames 21, 21 provided at an interval, and the V rollers 22 are interlocked. Both frames 21.21 are supported from the ground by a stand 24, and the height can be adjusted by turning a screw inside the stand 24. (Not shown) All of the V rollers 22 are rotationally driven by a V roller drive motor 23 via a chain.

The bar on the V roller 22 is supplied to the restraint feeding mechanism 3 side. The restraining feed mechanism 3 uses pinch rollers 31 to apply a restraining force to the bar material in the axial direction, thereby applying a strong compressive force to the material and eliminating buckling of the cut material. The pinch roller 31 is rotatably provided at the end of a cross arm 32 whose center is rotatably supported. The cross arm 32 is connected to a piston rod of a cylinder device 33, and when the piston rod is driven, the pinch roller 31 pinches the bar.

The pinch roller 31 is connected to a rotational drive mechanism (not shown). When the cylinder device 33 is driven, a piston rod connected to the cross arm 32 is operated, and the bar material is strongly pinched between the pinch rollers 31. When the pinch roller 31 is rotationally driven by the rotary drive mechanism, the tip of the bar comes into contact with the stopper head 56 (FIG. 1), and strong compressive stress is generated in the bar. The bar supplied to the press machine 4 is cut with this compressive stress applied thereto. In this embodiment, the press machine 4 is a press having a C-shaped frame structure, and generates pressure using a lever mechanism that employs a lever principle. (Not shown) What is shown in FIG. 1 is a cross-sectional view of the cutting machine 11t40. The ram 41 moves in the vertical direction to generate pressing force. An upper mold 42 is provided at the lower end of the ram 41, and a lower end surface 43 is formed at the lower end of the upper mold 42. A cutting jig main body 44 is placed on the frame of the press machine 4 below the upper die 42. On the cutting jig main body 44, there is a lower blade holder 4.
5 is fixed, and a cylindrical lower blade 46 is fixed in the lower blade holder 45.

The center of the lower blade 46 has a circular hole 47 for passing the bar material through. A lower blade set screw 49 is provided coaxially with the lower blade 46,
The end surface 48 of the lower blade 46 is brought into close contact with the end surface 50 of the lower blade set screw 49 to fix the lower blade 46. The axial position of the lower blade 46 is adjusted by rotating the handle 51 of the lower blade push screw 49 and pushing the end surface 48 with the end surface 50. A cylindrical upper blade 52 is slidably provided on the front end surface 51 of the lower blade 46. Upper blade 5
2 is fixed within the upper blade holder 53. Upper blade 52
A cylindrical hole 54 is provided in the hole, into which a rod is inserted. The bar material is sheared and cut between the upper blade 52 and the lower blade 46.

At the top of the upper blade holder 53 is an upper end surface 55 to which press impact pressure is applied by the lower end surface 43 of the upper mold 42 . Upper blade 52
A stopper head 56 is screwed into a stopper holder 57 in front of the stopper head 56 . A spring hole 59 is provided in front of the screw, and a spring 6 is inserted into the spring hole 59.
0 is compression and insertion. The spring 60 constantly presses the stopper head 56 to prevent the screws of the stopper head 56 from loosening.

The billet 65 cut between the lower blade 46 and the upper blade 52 descends while being held within the inner cylindrical hole 54. When descending, air is ejected from the air ejection port 66, and the billet 65 is pushed forward by the pressure of the air. The extruded billet 65 enters a fixed discharge hole 67. Discharge hole 67
The entrance is slightly enlarged in a trumpet shape so that the billet 65 can be easily received. A billet transfer mechanism 70 is provided in front of the discharge hole 67, and this billet transfer mechanism 7
0 receives the billet 65 from the discharge hole 67 and transfers it to a forging position.

FIG. 2 is a three-dimensional view showing the billet transfer mechanism 70. A billet receiving hole 72 is formed in the receiver main body 71 of the billet transfer mechanism 70 coaxially with the billet discharge hole 67, and receives the billet 65 from the billet discharge hole 67. The receiver main body 71 is fixed to a piston rod 73.

The axial movement and rotation of the piston rod 73 are driven by a cylinder 74. When hydraulic pressure is introduced into the cylinder 74, the piston rod 73 moves, and a spiral groove 75 is formed on the circumference of the piston rod 73.
5, a cam flow 6 is inserted into the cylinder 74, and when the cylinder 74 is driven, the piston rod 73 rotates forward according to the shape of the spiral groove 75, and the receiver main body 71 moves forward (
(in the direction of arrow A) and rotate (in the direction of arrow B).

FIG. 3 shows a press for modifying the shape of a billet 65. The receiver main body 71 moves toward the forging machine and swings in the direction of arrow A around the piston rod 73 to insert the billet/recess 65 in the billet receiving hole 72 into the billet straightening hole 78 in the lower press die 77. . A punch 80 is arranged concentrically with the billet correction hole 76, and the punch 80 is fixed to the same upper mold 42 as the cutting mechanism.

Operation of the Embodiment] Hereinafter, the operation of the embodiment will be explained according to the cutting operation.

The bar placed on the material mounting table 11 is hooked on the feed claw 12 and placed on the V roller 22. The bar driven by the V-roller drive motor 23 to the ■ roller 22 is moved by the pinch rollers 31, 31, . :31.31. The cylinder device 33 is driven and the cross arm 32 is rotated to strongly pinch the bar material. Pinch roller 31, 31.31.
31 is rotationally driven to feed the bar material, and the bar material is brought into contact with the stopper head 56, and a compressive force is applied to the bar material, and the bar material is brought into contact with the stopper head 56.

The ram 41 operates, the lower end surface 43 of the upper die 42 aligns with the upper end surface 55 of the upper blade holder 53, and the upper blade 52 slides downward.

(2) The bar material is cut between the upper blade 52 and the lower blade 46, and the billet 65 is cut. At the same time as cutting, the upper blade holder 53 is lowered, and the end face of the billet 65 faces the air outlet 66. ■Air is ejected from the air outlet 66, and the billet 65 is released from the billet discharge hole 6.
7, and further enters the billet receiving hole 72 of the billet transfer mechanism 70 through the billet discharge hole 67.

(2) The piston rod 73 is driven and the receiver main body 71 is driven, and the receiver main body 71 swings while moving along the axis of the piston rod 73. ■The billet transfer mechanism 70 stops on the press lower die 75, and the receiver main body 7
1 rotates around the piston rod 73, and the billet 65
is dropped into the billet straightening hole 76. - When the billet 65 is dropped, the receiver main body 71 retreats and returns to its original position. When the upper die 42 descends for the next cutting, the punch 8
0 is lowered, and the punch 80 pushes the billet 65 in the billet receiving hole 76 to correct the distortion of the billet 65. During this straightening press, the subsequent cutting of the material in step (1) is performed at the same time. The billet 65 is deformed within the billet receiving hole 76 and is formed into an undeformed cylinder having the same shape as the billet receiving hole 76 .

(2) The ejector 81 operates upward to eject the molded billet 65 out of the lower press die 75. (2) The ejector 81 descends and the cycle ends.

[Other Embodiments] Although the above embodiment uses a lever press machine, the press machine 4 may be any type of press machine that generates pressure for cutting, such as a crank press or a hydraulic press. Further, although the upper blade 52 and the lower blade 46 are cylindrical blades in this embodiment, they may be selected depending on the shape of the object to be cut, such as a semi-cylindrical blade or a straight blade, and any blade with good cutting performance may be used. good. FIG. 6 shows another embodiment of the billet transfer mechanism 70. Two receiver bodies 71 are provided on a straight line, and billet receiving holes 72 are alternately located at positions A of billet discharge holes 67. Furthermore, it also serves as the billet receiving hole 72 and a press lower die for straightening the billet 65. A receiver main body 71 is fixed to one end of the transfer shaft 91.

The other end of the transfer shaft 91 is connected to the cylinder 74 via a coupling.
is connected to the piston rod. A spiral groove 92 is formed on the circumferential surface of the transfer shaft 91, and this spiral groove 7I492
The engagement protrusion 94 of the bearing 93 is inserted into.

The bearing 93 is fixed to a bearing body 95. When one receiver main body 71 receives a billet 65 at the A position, the transfer shaft 91 moves in the axial direction by the operation of the cylinder 74, and also swings to the opening position with the billet receiving hole 72 facing upward. do.

During this time, the other receiver main body 71 facing the main body 71 moves to the A position and prepares to receive the next billet 65.

The ram 41 operates, and the bonder 80 presses the billet 65 in the billet receiving hole 72. The ejector 81 operates to push out and discharge the billet 65 in the billet receiving hole 72.

When ejected, the receiver main body 71 returns to the original position A.

The other receiver main bodies 71 also repeat the same operation alternately with a periodic delay.

Since two receiver bodies 71 are used and the receiver body 71 also serves as the lower press die, there is a feature that the downtime of the press can be reduced. In this embodiment, the receiver main body 71 and the lower press mold are used together, but it may be transferred to the lower press mold as in the previous embodiment. Although the billet transfer mechanism 70 is driven by two cylinders 74, two receiver bodies 71 are fixed to the same transfer shaft 91.
It is also possible to use a single cylinder. Furthermore, the axial drive cylinder and the swing cylinder of the receiver main body 71 may be separated to perform the same movement as described above.

[Effects of the Invention] As detailed above, in the cutting machine with a forging machine of the present invention, the forging machine is attached to the cutting machine and the two are interlocked, so that a uniformly shaped billet can be produced. In addition, preliminary processing for forging can be performed at the same time, reducing the number of steps.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the cutting blade, Figure 2 is a perspective view of the billet transfer mechanism, Figure 3 is a sectional view of the press attached to the billet,
FIG. 4 is a plan view showing the material magazine and press machine of the present invention, FIG. 5 is a front view of FIG. 4, FIG. 6 is a view showing another embodiment of the billet transfer mechanism, and FIG. 7(a) 7(b) is a diagram showing the normal feeding of the billet in the heating furnace, and FIG. 7(b) is a diagram showing the abnormal feeding state of the billet in the heating furnace. 1... Bar magazine, 2... Bar supply stand, 12...
・Feed claw, 22... V roller, 40... Cutting mechanism 4
1... Ram, 52... Upper blade, 46... Lower blade, 70
... Billet transfer mechanism, 75 ... Press lower mold, 76
... Billet hole, 80... Punch

Claims (1)

[Claims] A bar feeder that continuously supplies bars, a cutting blade that shears the bars supplied from the bar feeder, a forging device that receives and forges the cut bars, and the cutting blade and forging. A cutting machine with a forging machine that has a press machine that is driven in conjunction with the device.