JP5057066B2 - Automatic operation method of forging press - Google Patents

Description

  The present invention relates to an automatic operation method for a forging press.

The forging press described above includes a fixed mold and a moving mold that approaches and separates from the fixed mold, and performs forging by setting a workpiece between both molds and bringing them closer to each other. It has become.
In such a forging press machine, when automatic operation is performed, various conditions such as the stroke amount of the moving mold, the approach speed of the moving mold to the work, and the deceleration point before the work of the moving mold are determined. After setting, forging is started by inputting the set forging dimensions required in this step, for example, rough finishing step, to the control system (for example, see Non-Patent Document 1).

At the time of this automatic operation, first, after the moving mold approaches the work, the work starts to come into contact with the work, and when the work reaches the set forging dimension, the moving mold is separated from the work. Move in the direction.
Mechanical Engineering Handbook Fundamentals / Applications B2-183,184 Japan Society of Mechanical Engineers, September 30, 1989 New 3rd edition issued

  However, during the automatic operation of the forging press described above, if the work is to be largely crushed by a single operation of the moving mold, the reduction speed (the moving speed after the moving mold contacts the work) gradually decreases. As a result, there is a limit to the amount that can be crushed with a single operation of the moving mold, so the forging dimension setting input operation and operation are repeated several times before obtaining the required forging dimension. Need to repeat.

In other words, in the time until the forging of one workpiece is completed, the ratio of the time spent for resetting the forging dimension is large, and the work efficiency is reduced by that much, which solves this problem. This has been a conventional problem.
The present invention has been made paying attention to the above-described conventional problems, and when a forging press machine is automatically operated, a required forging dimension can be obtained only by performing a condition setting operation once. As a result, it aims at providing the automatic operation method of the forge press machine which can implement | achieve the improvement of a forge work efficiency.

Invention includes: a fixed mold, an automated method of operating a forging press having a movable die that toward and away from the the fixed mold, pressure speed of the movable mold according to claim 1 of the present invention Is set as appropriate, and after setting the desired forging dimensions, the forging is started by moving the moving mold in a direction approaching the fixed mold, and the moving mold contacts the workpiece and the When the rolling speed reaches the set value, the moving mold is once moved in a direction away from the fixed mold, and then the moving mold is moved in a direction approaching the fixed mold to perform forging. The automatic forging method of the forging press machine is characterized in that the moving mold is configured to repeatedly move the moving mold toward and away from the fixed mold until the forging dimension reaches a set value. Means for Solving Conventional Problems It is.

Further , the invention according to claim 2 of the present invention is an automatic operation method of a forging press machine including a fixed mold and a movable mold that approaches and separates from the fixed mold. The rolling amount and the rolling speed are each set to appropriate values, and after setting the desired forging dimensions, the forging is started by moving the moving mold in a direction approaching the fixed mold, and the moving mold is After moving the moving mold once in a direction away from the fixed mold when any of the reduction amount and the reduction speed reaches the respective set values in contact with the workpiece, the moving mold is moved. The forging is resumed by moving in the direction approaching the fixed mold, and the approaching and separating operation of the movable mold with respect to the fixed mold is repeated until the forging dimension reaches the set value. The automatic operation of this forging press machine And a means for solving the conventional problems described above a method.

  Here, the amount of reduction of the moving mold is the amount of movement after the moving mold comes into contact with the workpiece. That is, the vertical axis in FIG. As shown in the graph with the passage of time, the lowering amount X from the workpiece contact point C where the moving mold that starts to descend from the uppermost point A and passes through the deceleration point B contacts the workpiece in a state where the descending speed is lowered is shown. When the lowering amount X reaches the reduction amount set value D, the moving mold starts to rise.

At this time, the stroke amount Sx of the moving mold is from the uppermost point A at which the moving mold starts to descend to the position of the moving mold when the descending amount X becomes the reduction amount set value D and starts to rise. is there.
On the other hand, the reduction speed of the moving mold is the moving speed after the moving mold comes into contact with the workpiece, that is, the vertical axis in FIG. 3B is the moving amount of the moving mold and the horizontal axis is the time. As shown in the graph of the elapsed time, the moving mold that starts to descend from the uppermost point A and passes through the deceleration point B is the descending speed V after contacting the workpiece at the workpiece contact point C. This descending speed V When is below the set value, the moving mold starts to rise.

Then, as shown in the graph in which the vertical axis in FIG. 3C is the amount of movement of the moving mold and the horizontal axis is the time elapsed, the moving mold that starts to descend from the uppermost point A and passes through the deceleration point B However, after contacting the workpiece at the workpiece contact point C, if the set forging dimension E is reached before the reduction amount and the reduction speed both reach the set values, the moving mold starts to rise at this point.
In this case, the forging stroke amount S of the moving mold is from the uppermost point A at which the moving mold starts to descend to the position of the moving mold at which the set forging dimension E starts to rise.

The amount that can be crushed by one operation of the moving mold described above changes each time depending on the surrounding environment such as the components of the steel material to be a workpiece, the variation of the structure, or the temperature.
From the viewpoint of efficient production, considering the reduction amount (downward amount X) of the moving mold, it is desirable to set the single reduction amount of the moving mold as much as possible to reduce the number of forgings.
In the case of forged automatic operation method of forming a press that manages only reduction of the moving die is too takes large single reduction rate of the movable mold, it is impossible to reach a reduction of the target In addition, since it is necessary to raise the moving mold manually, it is necessary to set a reduction amount with a sufficient margin in order to continue the automatic operation.

In addition, in the case of the automatic operation method of the forging press machine according to claim 1 in which only the rolling speed (lowering speed V) of the moving mold is managed, a slight variation is likely to occur in each forging amount, so the rolling speed is also low. It is desirable to set a value with a margin.
On the other hand, in the case of the automatic operation method of a forging press machine according to claim 2 , which manages both the reduction amount (lowering amount X) and the reduction speed (lowering velocity V) of the moving die, the reduction amount of the moving die is set to Even if the target reduction amount cannot be reached, the moving mold is automatically raised when the reduction speed reaches the set value even if the target reduction amount cannot be reached. Automatic operation is possible.

The automatic operation method of the forging press machine of the present invention, first, the reduction rate of the movable mold, or both the reduction rate及beauty pressure under speed and sets the appropriate value based on the amount collapsible in a single operation, Set the forging dimensions required in the process.
Thereafter, the forging is started by moving the moving mold in the direction approaching the fixed mold until the moving mold contacts the workpiece and the reduction speed reaches the set value, or the reduction amount and the reduction speed are adjusted. The reduction is continued until either reaches the set value, and when either the reduction speed or the reduction amount or the reduction speed reaches the set value, the moving mold is moved from the fixed mold. Move once in the direction of separation.

  Then, the movement is continued until the moving mold reaches a predetermined point. After the moving mold reaches the predetermined point, the moving mold is moved in a direction approaching the fixed mold and forging is performed. If it is restarted and the approaching and separating operation of the moving mold with respect to the fixed mold is repeated until the forging dimension reaches the set value required in the process, it is required only by the first condition setting operation. Forged dimensions to be obtained will be obtained.

  Thus, in the automatic operation method of the forging press machine of the present invention, the required forging dimensions can be obtained by performing the condition setting operation only once, so that not only the forging work efficiency is improved, but also the operator In addition to being suitable for night operations, where a single operator often handles multiple forging presses, it is also suitable for rough ground processes and intermediate finishing processes where dimensional accuracy is relatively loose. .

  In the automatic operation method of the forging press machine of the present invention, since it is configured as described above, if the condition setting operation is performed once at the start of automatic operation of the forging press machine, it is required to perform forging without stopping operation halfway. Forging dimensions can be obtained, and as a result, an excellent effect that it is possible to realize an improvement in forging work efficiency is brought about.

Hereinafter, the present invention will be described based on an embodiment.
1 to 3 are diagrams for explaining an automatic operation method of a forging press machine according to this embodiment. In this embodiment, a case where the forging press machine is a vertical forging press machine will be described as an example. .
As shown in FIG. 1, the forging press 1 includes a frame 2, a lower anvil (fixed mold) 3 disposed on the frame 2, four pillars 4 disposed on the frame 2, and these A press drive unit 5 installed between the upper ends of the columns 4, an upper metal plate (moving mold) 6 that moves up and down by the operation of the press drive unit 5 and approaches and separates from the lower metal plate 3, both on the frame 2 and both A manipulator 7 for setting a workpiece W is provided between the anvils 3 and 6, and forging is performed by bringing the upper anvil 6 close to the lower anvil 3.

In this forging press 1, when performing automatic operation, as shown in FIG. 1, first, after setting the work W on the frame 2 and between both anvils 3, 6 and fixing with the manipulator 7, As shown in FIG. 2, in step S1, the rolling amount and the rolling speed of the upper anvil 6 are set to appropriate values, and forging dimensions required in the process are set.
At this time, as shown in FIG. 3, the reduction amount X (stroke amount Sx) and the reduction speed V of the upper anvil 6 are appropriately set based on the amount that can be crushed by one operation of the upper anvil 6. A forging dimension (forging stroke amount S) required in the forging process is set.

  Thereafter, in step S2, a tact mode (mode for executing steps S3 to S6 described later) is selected and started, and in step S3, the upper anvil 6 is lowered by the operation of the press drive unit 5 to start forging. In step S4, the upper anvil 6 comes into contact with the workpiece W, and the reduction is continuously performed until one of the reduction amount X and the reduction velocity V reaches the respective set value, and the reduction amount X and the reduction velocity V are reduced. When any one of the set values is reached, in step S5, the upper anvil 6 is raised by the operation of the press drive unit 5 and is once moved in a direction away from the workpiece W.

  Then, in step S6, the ascending is continued until the upper anvil 6 reaches a lowering command point, which is a predetermined point. After the upper anvil 6 reaches the lowering command point, in step S3, the press driving unit is again operated. The forging is resumed by lowering the upper anvil 6 by the operation of No. 5, and the descending and raising operation of the upper anvil 6 in this tact mode is repeated until the forging dimension reaches the set value required in the process. For example, the required forging dimensions can be obtained only by the first condition setting operation performed in step S1.

As described above, in the automatic operation method of the forging press machine according to this embodiment, if the condition setting operation is performed once at the beginning of the automatic operation, the required forging dimensions can be obtained, so that the forging work efficiency is improved. Will be achieved.
In addition, since it is not necessary to repeat the condition setting several times in this way, it is possible to contribute to the labor reduction of the worker by that much, and the automatic operation method of the forging press machine according to this embodiment is performed by one person. It is suitable for night operations in which a person often takes charge of a plurality of forging presses, and is also suitable for use in rough ground processes and intermediate finishing processes with relatively moderate dimensional accuracy.

In the automatic operation method of the forging press machine according to the above-described embodiment, in the initial condition setting at the start of automatic operation, both the reduction amount and the reduction speed of the upper anvil 6 are appropriately set to values. is not limited to, sets only reduction rate of the upper anvil 6 as appropriate values, the upper anvil 6 is once raise the upper anvil 6 when the pressure rate in contact with the workpiece W reaches the set value Following this, forging may be resumed by lowering the upper anvil 6.

  Moreover, in this embodiment, although the case where the automatic operation method of the forging press machine according to the present invention was adopted in the vertical forging press machine was described as an example, it is not limited to this.

It is front explanatory drawing of the forge press machine to which the automatic operation method which concerns on one Embodiment of this invention is applied. It is a flowchart of the automatic operation method of the forge press machine which concerns on one Embodiment of this invention. It is the graph (a) explaining the amount of reduction of the automatic operation method of the forge press machine concerning one embodiment of the present invention, the graph (b) explaining the reduction speed, and the graph (c) explaining the forge size.

Explanation of symbols

1 Forging press 3 Lower anvil (fixed mold)
6 Upper anvil (moving mold)
V Reduction speed W Work X Reduction amount

Claims (2)

An automatic operation method of a forging press machine including a fixed mold and a moving mold that approaches and separates from the fixed mold,
After appropriately setting the rolling speed of the moving mold to a value and setting the desired forging dimensions,
Forging is started by moving the moving mold in the direction approaching the fixed mold,
When the moving mold comes into contact with the workpiece and the reduction speed reaches the set value, the moving mold is temporarily moved in a direction away from the fixed mold, and then the moving mold is fixed. Move in the direction approaching the mold and resume forging,
An automatic operation method of a forging press machine, wherein the moving mold is repeatedly moved toward and away from the fixed mold until the forging dimension reaches a set value. An automatic operation method of a forging press machine including a fixed mold and a moving mold that approaches and separates from the fixed mold,
It sets a reduction amount and reduction rate of the movable die to the appropriate value, respectively, after setting the desired forging dimensions,
Forging is started by moving the moving mold in the direction approaching the fixed mold,
Following cause temporarily moved in a direction in which the movable die is separated said movable die when either has reached the respective set value of the reduction rate and pressure rate in contact with the workpiece from the fixed mold , The forging is resumed by moving the moving mold in the direction approaching the fixed mold,
An automatic operation method of a forging press machine, wherein the moving mold is repeatedly moved toward and away from the fixed mold until the forging dimension reaches a set value.

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