JP2005144560A - Rupture method and rupture device of ductile metallic part and method of manufacturing ruptured ductile metallic part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To optimally rupture a ductile metallic material regardless of an experience of maintenance personnel. <P>SOLUTION: This rupture method of a ductile metallic part ruptures the ductile metallic part by driving a wedge 15 in a half-split type mandrel via a hydraulic actuator 20, by fitting the half-split type mandrel 13 to a through-hole of the ductile metallic part having the through-hole. The ductile metallic part is ruptured by managing an expansion speed or expansion acceleration of the through-hole expanded by the mandrel up to finishing rupture from a start of the rupture. A rupture process detecting plate 23 is desirably installed on a piston 22 connected to the wedge of the hydraulic actuator. A moving speed or acceleration of the wedge is successively detected up to finishing the rupture from the start of the rupture via the rupture process detecting plate. This detected data is recorded. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a breaking method and a breaking device for pulling and breaking a ductile metal part such as a connecting rod, and a method for producing a fractured ductile metal part.

  There is a case where a ductile metal part is pulled and broken to be used as a pair of products obtained by recombining the halved parts. An example of such a part is a connecting rod known as an automobile part (hereinafter simply referred to as “connecting rod”). A so-called FS (Fracture Splitting) method is available as a method of dividing the large end of the connecting rod into a rod part and a cap part. In the FS method, pressure is applied to the mandrel by pressing the wedge against the mandrel, and then the dynamic rod is applied to break the connecting rod (see, for example, Patent Document 1).

  Here, the specific structure of the connecting rod breaking device described in Patent Document 1 will be described in more detail. The connecting rod breaking device is disposed so as to be movable away from each other on a base on which the connecting rod is placed, and includes a first supporting member and a second supporting member that horizontally support the large end portion and the rod portion of the connecting rod. The halved mandrel is composed of two mandrel halves that are suspended from these support members, and each outer peripheral surface abuts on and fits to the inner surface of the opening of the connecting rod large end.

  The surfaces of the mandrel halves that are in contact with the opposing end surfaces are each tapered, and each mandrel half is separated and expanded evenly, an actuator that applies a load to the wedge, and a pressurizing load is applied to the actuator. And a control means for instantaneously breaking the opening by applying a rupture load after each mandrel half is brought into contact with the inner surface of the opening of the connecting rod via a wedge.

  A conventional connecting rod breaking method using the connecting rod breaking device having such a structure is performed as follows. First, the mandrels are urged toward each other by a spring, and the mandrels are contracted to enter the opening at the large end of the connecting rod. Then, the wedge is temporarily stopped until the wedge is pushed in until the tapered portion at the tip of the wedge comes into contact with the mandrel, and the actuator applies a dynamic load to the wedge via the control means, thereby breaking the connecting rod.

JP 2002-66998 A (page 3-5, FIG. 1)

  In the connecting rod breaking method using the conventional connecting rod breaking device, the wedge driven into the mandrel expansion hole to be engaged with the large end of the connecting rod is driven by the hydraulic cylinder as described above. The movement speed of was not managed objectively. This is because a skilled maintenance person observes the movement of the wedge, adjusts, for example, a variable throttle (variable orifice) installed in the piping of the hydraulic device, and the wedge is driven into the mandrel expansion hole in an optimum state. It was because it was doing so. However, the speed adjustment of the wedge by such maintenance personnel has considerable experience and skill, and also requires considerable fine adjustment as the adjustment content, and the adjustment work itself is difficult.

  An object of the present invention is to perform an optimal fracture of a ductile metal material without relying on the experience of such maintenance personnel.

In order to solve the above-mentioned problem, a method for breaking a ductile metal part according to the present invention
Fracture of a ductile metal part that breaks the ductile metal part by fitting a half type mandrel into the through hole of the ductile metal part having a through hole and driving a wedge between the half type mandrels In the method
The ductile metal part is ruptured by controlling the expansion speed or expansion acceleration of the through-hole expanded by the mandrel from the start to the end of the break.

  By managing the expansion speed or expansion acceleration of the through hole from the start of breakage to the end of breakage, it is possible to objectively grasp the state of breakage regardless of maintenance personnel.

The ductile metal part breaking method according to claim 2 of the present invention is the ductile metal part breaking method according to claim 1,
The wedge is driven into the through hole via a hydraulic actuator, and a fracture process detection plate is attached to a piston connected to the wedge of the hydraulic actuator and a movement of the fracture process detection plate is detected. By detecting the movement of the breaking process detection plate with the breaking process detection sensor, the moving speed or acceleration of the wedge is sequentially detected from the start to the end of the break, and the detected data is recorded. It is said.

  Since the movement speed or acceleration of the wedge is sequentially detected from the break start to the break end via the break process detection plate, it is possible to objectively grasp the break state regardless of maintenance personnel.

  According to a third aspect of the present invention, there is provided a method for breaking a ductile metal part according to the second aspect of the present invention, wherein the ductile metal part is broken by a mandrel instead of attaching a fracture process detection plate to the piston of the hydraulic actuator. By attaching a breakage process detection plate to the slide table that is fixed, and detecting the movement of the breakage process detection plate with the breakage process detection sensor, the movement speed or acceleration of the mandrel in the expanding direction is changed from the start of breakage to the end of breakage. It is characterized by detecting sequentially until it reaches.

  Even if the breakage detection plate is attached to the mandrel to detect the spreading speed or acceleration of the mandrel, it is possible to objectively grasp the breakage state regardless of maintenance personnel as in the second aspect.

Moreover, the fracture | rupture apparatus of the ductile metal parts of Claim 4 of this invention is
Fracture of a ductile metal part that breaks the ductile metal part by fitting a half type mandrel into the through hole of the ductile metal part having a through hole and driving a wedge between the half type mandrels In the device
Wedge driving means for driving a wedge into the through hole, and a controller for managing the expansion speed or expansion acceleration of the through hole expanded by the mandrel through the wedge driving means from the start to the end of the break. It is said.

Moreover, the fracture | rupture apparatus of the ductile metal components of Claim 5 of this invention is
The ductile metal part breaking device according to claim 4, wherein the wedge driving means comprises a hydraulic actuator,
The breaking device is
A fracture process detection plate attached to a piston connected to a wedge of the hydraulic actuator;
By detecting the movement of the breakage process detection plate, a breakage process detection sensor that sequentially detects the moving speed or acceleration of the wedge from the start of breakage to the end of breakage,
The controller includes a rupture process recording unit that records data detected by the rupture process detection sensor.

  The ductile metal part breaking device according to claim 6 of the present invention is the ductile metal part breaking apparatus according to claim 5, wherein the breaking process detection plate is connected to the wedge of the hydraulic actuator. Instead of being attached to the slide table, it is attached to a slide table to which the mandrel is fixed, and the breaking process detection sensor sequentially detects the movement speed or acceleration of the mandrel through the movement of the breaking process detection plate from the start to the end of the break. It is characterized by having come to detect.

  The ductile metal part breaking device according to any one of claims 4 to 6 can be broken while objectively grasping the fracture state of the ductile metal part without depending on the experience of maintenance personnel.

  According to a seventh aspect of the present invention, there is provided a method for fracture of a ductile metal part, wherein the hydraulic actuator is based on the detected data instead of recording the detected data according to the second or third aspect. The hydraulic pressure is adjusted to a predetermined pressure, or the hydraulic actuator is adjusted to a predetermined speed.

  Further, the ductile metal part breaking method according to claim 8 of the present invention replaces the breaking process recording part according to claim 5 or 6 with the hydraulic pressure of the hydraulic actuator based on the detected data. A control controller for adjusting the pressure to a predetermined pressure or adjusting the hydraulic actuator to a predetermined speed is provided.

  The connecting rod is automatically adjusted so as to be optimally ruptured through the control controller, thereby realizing the optimum connecting rod rupture without human intervention.

  Moreover, the manufacturing method of the fracture | ruptured ductile metal component of Claim 9 of this invention uses the fracture | rupture method of the ductile metal component in any one of Claim 1 thru | or Claim 3 and Claim 7. A ductile metal part that is broken is produced by breaking the ductile metal part.

  It is possible to obtain a ductile metal part that is fractured in an ideal state while objectively grasping the fracture state regardless of maintenance personnel.

  When the method and apparatus for fracture of a ductile metal part according to the present invention is used, the ductile metal material can be optimally fractured without depending on the experience of maintenance personnel.

  Hereinafter, the fracture | rupture method of the ductile metal parts concerning one Embodiment of this invention is demonstrated with the fracture | rupture apparatus utilized for the fracture | rupture method. In the present invention, a so-called connecting rod breaking method will be described as an embodiment of a ductile metal part breaking method.

  Hereinafter, the breaking method of the connecting rod concerning one Embodiment of this invention is demonstrated.

  As shown in FIG. 1, a connecting rod breaking device 1 used for this connecting rod breaking method is disposed on a base 100 on which a connecting rod C is placed so as to be movable away from each other. The first support member 11 and the second support member 12 that horizontally support the portion, and these support members 11 and 12 are suspended, and each outer peripheral surface is in contact with the inner surface of the opening of the connecting rod large end. A half-shaped mandrel 13 including two mandrel halves 13a and 13b to be fitted is provided.

  The surfaces of the mandrel halves 13a and 13b that are in contact with the opposing end surfaces form a tapered surface, the wedge 15 that uniformly separates and expands the mandrel halves 13a and 13b, and the hydraulic actuator 20 that applies a load to the wedge 15. And a control controller that applies a load to the hydraulic actuator 20 to bring the mandrel halves 13a and 13b into contact with the inner surface of the opening of the connecting rod via the wedge 15 and then instantaneously breaks the opening by applying a breaking load. (Not shown in FIG. 1).

  The connecting rod breaking method using the connecting rod breaking device 1 having such a structure is performed as follows. First, the mandrel 13 is urged in a direction facing each other by a spring, and the mandrel 13 is contracted to enter the opening at the large end of the connecting rod C. Then, the wedge 15 is temporarily stopped until the wedge taper is in contact with the mandrel halves 13a and 13b, and the hydraulic actuator 20 applies a dynamic load to the wedge 15 via the control means, thereby connecting rods. An expansion force is applied to the above-described break start portion of C to break it instantaneously.

  In the present embodiment, the connecting rod C is mounted on the first support member 11 and the second support member 12 in such a manner that the connecting rod C is mounted. Is attached to the lower side of the first support member and the second support member. In this state, both the support members are lifted, the connecting rod large end is guided to the mandrel and positioned, and a wedge is driven into the mandrel. A connecting rod breaking device may be used. Therefore, in the following description, it demonstrates mainly based on the latter connecting rod support form.

  Hereinafter, a first embodiment of a connecting rod breaking method according to the present invention will be described. The connecting rod breakage control device used in the first embodiment is configured as follows. As shown in FIG. 2, the connecting rod breakage control device is provided in a hydraulic actuator 20 that drives a wedge 15 used to break the connecting rod. That is, the hydraulic actuator 20 includes a hydraulic cylinder 21, a piston 22 that moves the wedge 15 by reciprocating within the hydraulic cylinder with a constant stroke, and a scale (breaking process detection plate) 23 fixed to the rod 22 a of the piston 22. The optical sensor (breaking process detection sensor) 24 reads the scale on the scale, and the controller 30 detects the output of the optical sensor 24 and detects the moving speed of the scale 23, that is, the wedge 15 as needed. A hydraulic circuit 25 is connected to the hydraulic cylinder 21, and a variable solenoid valve (variable throttle) 26 is provided between pipes supplied by the hydraulic circuit 25. Further, a pressure switch 29 for detecting the hydraulic pressure of the hydraulic actuator 20 is provided at a predetermined position of the pipe.

  Next, an exemplary calculation method for detecting the wedge speed of the wedge speed monitoring device 2 will be described. As the specifications of the scale 23, a scale with a pitch of 0.5 mm is provided, and each scale is read by the optical sensor 24 according to the movement of the wedge, and a square wave is output. The optical sensor 24 is composed of a line sensor and receives light at a pitch of 25 μm with light receiving elements arranged in a straight line. From the line sensor, for example, a square wave of an A phase signal that repeats ON / OFF at a pulse of 50 μm and a signal B phase signal that repeats ON / OFF at a pulse of 50 μm with a difference of 25 μm is output. The interval of the scale pitch is not limited to 0.5 mm pitch and may be arbitrary. The same applies to the pitch interval of the light receiving elements. As a waveform recording device that reads a square wave, for example, a device that can record a waveform at a constant time interval and can store numerical data (for example, CVS format) like a memory high coder is preferable.

  More specifically, a square wave is turned ON / OFF according to the scale of the scale 23 and output. This waveform is observed with a short sampling time. For example, ON / OFF is repeated every time the scale moves 0.05 mm, and the speed is determined based on the repetition time. In this case, ΔV = 0.05 / ΔT. For example, if it took 0.001 seconds to move 0.05 mm, ΔV = 0.05 (mm) /0.001 (sec) = 50 (mm) / (sec) = 3 (m / min). . Based on the calculation result, the acceleration can be calculated from the speed change amount per unit time. It is also possible to calculate from the time taken by setting the original movement amount as an integral multiple of 0.05 mm. Note that the movement speed or movement acceleration of the wedge 15 obtained from the movement of the scale 23 corresponds equivalently to the expansion speed or acceleration of the large end through hole of the connecting rod C expanded by the mandrel 13.

  Below, the flow in the case of performing automatic speed adjustment according to the calculation result will be described based on the flowchart of FIG.

  First, an automatic speed adjustment subroutine is started (step S1). Next, the controller issues a wedge lowering command (step S2). Subsequently, the wedge lowering solenoid valve is turned on (step S3). As a result, the wedge descends (step S4). Subsequently, a waveform relating to the movement of the wedge by the optical sensor and a hydraulic pressure waveform by a pressure sensor (not shown) are output (step S5). Subsequently, the controller calculates the speed and acceleration of the wedge (step S6). If it is determined from the calculation result that the wedge lowering speed is smaller than the reference speed (step S7), the speed adjustment of the solenoid valve is increased (step S8). On the other hand, when it is determined that the speed based on the calculation result is larger than the reference speed (step S9), the speed adjustment of the solenoid valve is decelerated (step S10). If the calculated speed is within the reference speed range, the automatic speed adjustment subroutine is terminated (step S11). This makes it possible to drive the wedge into the mandrel at an optimum speed.

  Next, the flow in the case of performing abnormality display according to the calculation result will be described based on the flowchart of FIG. First, an abnormal display subroutine is started (step S21). Next, the controller issues a wedge lowering command (step S22). Subsequently, the wedge lowering solenoid valve is turned on (step S23). As a result, the wedge descends (step S24). Subsequently, a waveform relating to the movement of the wedge by the optical sensor and a waveform of the hydraulic pressure are output (step S25). Subsequently, the controller calculates the wedge speed and acceleration (step S26). If it is determined from the calculation result that the descending speed of the wedge is smaller than the reference speed lower limit (step S27), an abnormality display below the speed lower limit is performed (step S28). On the other hand, when it is determined that the speed based on the calculation result is higher than the reference speed (step S29), an abnormal display is displayed above the speed upper limit (step S30). If the calculated speed is within the reference speed range, the abnormality display subroutine is terminated (step S31). As a result, when the wedge descending speed is abnormal, this can be notified promptly.

  Next, a second embodiment of the present invention, that is, a case where the present invention is used as a maintenance tool will be described. In this case, since only the waveform recording device 40 is used in place of the controller 30 in the connecting rod breaking device in the first embodiment, the same components are used for the other components. Reference numerals corresponding to those in FIG.

  In addition, when using this invention as a maintenance tool, it measures in the state like what is called teaching of a robot, without attaching a connecting rod to a connecting rod fracture | rupture apparatus. In addition, by recording the measurement results obtained by this measurement in the waveform recording device from the start of the connecting rod breakage to the end of the connecting rod breakage, based on this recorded result, regardless of the experience of skilled maintenance personnel as in the past The operating state of the hydraulic actuator can be adjusted.

  Next, a flow when the connecting rod breaking method according to the present invention is used as a maintenance tool will be described based on the flowchart of FIG.

  First, a maintenance tool subroutine is started (step S41). Next, the controller issues a wedge lowering command (step S42). Subsequently, the wedge lowering solenoid valve is turned on (step S43). As a result, the wedge descends (step S44). Subsequently, the waveform relating to the movement of the wedge by the optical sensor and the waveform of the hydraulic pressure are output (step S45). Subsequently, the waveform recording device calculates the speed and acceleration of the wedge (step S46). If it is determined from the calculation result that the wedge lowering speed is smaller than the reference lower limit (step S47), the speed adjustment of the solenoid valve is increased (step S48). On the other hand, when it is determined that the wedge lowering speed based on the calculation result is larger than the reference speed lower limit (step S49), the speed adjustment of the solenoid valve is decelerated (step S50). If the speed based on the calculation result is within the reference speed range, the maintenance tool subroutine is terminated without adjusting the speed by the solenoid valve (step S51).

  In each of the above-described embodiments, the scale 23 is fixed to the piston 22. Instead, as shown in FIG. 7, the scale 23 is fixed directly or indirectly to one of the mandrels 13 to perform this movement. It may be detected by the optical sensor 24 to obtain the speed or acceleration of the mandrel 13 and execute the above-described automatic speed adjustment subroutine, execute an abnormal display subroutine, or execute a subroutine used as a maintenance tool. Specifically, as a modification of the above-described embodiment, instead of the scale (breaking process detection plate) 23 being attached to the piston 22 connected to the wedge 15 of the hydraulic actuator like the scale 23 of the above-described embodiment, A scale 23 is attached to any part that moves with the mandrel 13 such as a slide table (pedestal) to which the mandrel 13 is fixed, and the movement of the scale 23 is detected by the optical sensor 24. 7 and 9 schematically show the state in which the scale 23 is indirectly attached to the mandrel 13 in this manner. Note that the scale 23 may be directly attached to the mandrel 13.

  An optical sensor (breaking process detection sensor) 24 sequentially detects the moving speed of the mandrel 13 through the movement of the scale 23 from the start of breakage to the end of breakage. The other components are the same as those in the above-described embodiment. Thus, even if the moving speed of the mandrel 13 is sequentially detected by the connecting rod breaking device from the beginning of the connecting rod breaking to the end of breaking, it breaks while objectively grasping the breaking state of the connecting rod regardless of the maintenance personnel experience. Or it can be broken while automatically adjusting the descending speed of the wedge by applying feedback control. Note that the moving speed or moving acceleration of the mandrel 13 obtained from the movement of the scale 23 naturally matches the expanding speed or expanding acceleration of the large end through-hole of the connecting rod C expanded thereby.

  Further, as shown in FIG. 8, in the configuration in which the base portion of the mandrel 13 is disposed below the connecting rod C as in the configuration shown in FIG. 1, the scale 23 is attached to the piston 22 and the moving speed is measured by the optical sensor 24. It can also be detected. Accordingly, it is naturally possible to use the present invention as an automatic speed adjustment, an abnormality display, and a maintenance tool for the wedge 15.

  As shown in FIG. 9, the scale 23 is attached to one of the mandrels 13 in the configuration in which the base portion of the mandrel 13 is disposed below the connecting rod C as in the configuration shown in FIG. You may make it detect by. This also makes it possible to use the present invention as an automatic speed adjustment, abnormality display, and maintenance tool for the wedge 15.

  By using the connecting rod breaking method described above, the speed of the wedge 15 can be displayed in relation to the pressure of the hydraulic actuator 20 as shown in FIG. It is possible to optimally manage the hydraulic pressure of the hydraulic actuator from the start of the connecting rod to the start of breakage to the end of breakage by adjusting the solenoid valve 26 of the hydraulic actuator 20 on the basis of the display content. In this case, the pressure switch 29 is appropriately used. In addition, this feedback can be performed artificially. In addition to this, the opening degree of the solenoid valve 26 is automatically adjusted by the subroutine described above, and the speed or acceleration of the wedge 15 or the mandrel 13 is automatically fed back. It is possible to use a wide range of usage.

  In the above-described embodiment, the speed of the wedge 15 from the start of breakage of the connecting rod C to the end of breakage is detected and recorded and managed. Unlike this, the wedge from the start of breakage of the connecting rod C to the end of breakage is detected. 15 accelerations may be measured and recorded and managed.

  Further, as a further modification of the present modification, the acceleration of the mandrel 13 from the start of breakage of the connecting rod C to the end of breakage may be measured and recorded and managed.

  In the above-described embodiment of the present invention, a through hole is provided in part, and a tensile stress is applied to divide the specified rupture part into two parts to make a halved part, and the fracture surface of the halved part comes into contact again For example, it can be widely applied to parts such as bearings and half spacers.

It is a side view which shows an example of the connecting rod fracture | rupture apparatus concerning this invention in a partial cross section. It is the figure which showed roughly the structure which performs automatic speed adjustment and speed abnormality display of the wedge in this invention. It is the figure which showed the flowchart in the case of performing the automatic speed adjustment of the wedge in this invention. It is the figure which showed the flowchart in the case of performing the speed abnormality display of the wedge in this invention. It is the figure which showed roughly the structure which uses this invention as a maintenance tool of a connecting rod fracture | rupture apparatus. It is the figure which showed the flowchart in the case of using this invention as a maintenance tool of a connecting rod fracture | rupture apparatus. It is the figure which showed schematically the structure which performs the automatic speed adjustment and speed abnormality display of the wedge in the modification of this invention. It is the figure which showed roughly the structure which performs the automatic speed adjustment and speed abnormality display of a wedge in another modification of this invention. It is the figure which showed roughly the structure which performs the automatic speed adjustment and speed abnormality display of a wedge in another modification of this invention. It is the figure which showed the relationship between the speed of the wedge in a connecting rod fracture | rupture, and the pressure of a hydraulic actuator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connecting rod breaking apparatus 2 Wedge speed monitoring apparatus 11 1st support member 12 2nd support member 13 Mandrel 13a, 13b Mandrel half part 15 Wedge 20 Hydraulic actuator 21 Hydraulic cylinder 22 Piston 22a Rod 23 Scale 24 Optical sensor 25 Hydraulic circuit 26 Solenoid valve 29 Pressure switch 30 Controller 31 Data recorder 33 Scale 34 Optical sensor 40 Waveform recorder 100 Base C Connecting rod

Claims (9)

Fracture of a ductile metal part that breaks the ductile metal part by fitting a half type mandrel into the through hole of the ductile metal part having a through hole and driving a wedge between the half type mandrels In the method
A method for breaking a ductile metal part, wherein the ductile metal part is broken by managing an expansion speed or an acceleration of a through-hole expanded by the mandrel from a break start to a break end.   The wedge is driven into the through hole via a hydraulic actuator, and a fracture process detection plate is attached to a piston connected to the wedge of the hydraulic actuator and a movement of the fracture process detection plate is detected. By detecting the movement of the breaking process detection plate with the breaking process detection sensor, the moving speed or acceleration of the wedge is sequentially detected from the start to the end of the break, and the detected data is recorded. The method for breaking a ductile metal part according to claim 1.   Instead of attaching a breakage process detection plate to the piston of the hydraulic actuator, a breakage process detection plate is attached to a slide table to which the mandrel is fixed, and the movement of the breakage process detection plate is detected by the breakage process detection sensor. The method for breaking a ductile metal part according to claim 2, wherein the moving speed or acceleration in the expanding direction of the mandrel is sequentially detected from the start of breakage to the end of breakage. Fracture of a ductile metal part that breaks the ductile metal part by fitting a half type mandrel into the through hole of the ductile metal part having a through hole and driving a wedge between the half type mandrels In the device
A wedge driving means for driving a wedge into the through hole;
A ductile metal part breaking device comprising: a controller for managing an expansion speed or acceleration of a through-hole expanded by the mandrel through the wedge driving means from the start to the end of the break. The wedge driving means comprises a hydraulic actuator,
The breaking device is
A fracture process detection plate attached to a piston connected to a wedge of the hydraulic actuator;
By detecting the movement of the breakage process detection plate, a breakage process detection sensor that sequentially detects the moving speed or acceleration of the wedge from the start of breakage to the end of breakage,
5. The ductile metal part breaking device according to claim 4, wherein the controller includes a breaking process recording unit for recording data detected by the breaking process detection sensor. Instead of being attached to the piston connected to the wedge of the hydraulic actuator, the breaking process detection plate is attached to a slide table to which the mandrel is fixed,
The breakage process detection sensor is configured to sequentially detect the moving speed or acceleration of the mandrel from the start of breakage to the end of breakage through the movement of the breakage process detection plate. The ductile metal part breaking device as described.   4. Instead of recording the detected data according to claim 2 or 3, the hydraulic pressure of the hydraulic actuator is adjusted to a predetermined pressure based on the detected data, or the hydraulic actuator is adjusted to a predetermined speed. A method for breaking a ductile metal part, comprising:   7. A controller that adjusts the hydraulic pressure of the hydraulic actuator to a predetermined pressure based on the detected data or adjusts the hydraulic actuator to a predetermined speed instead of the breaking process recording unit according to claim 5 or 6. An apparatus for breaking ductile metal parts, comprising:   A ductile metal part fractured by breaking the ductile metal part using the ductile metal part fracture method according to any one of claims 1 to 3 and claim 7. A method for producing a fractured ductile metal part characterized.

Images