JP6917261B2 - A method for treating a fracture surface of a ductile metal part, a fracture surface processing apparatus thereof, and a method for manufacturing a ductile metal part. - Google Patents

Description

The present invention relates to a fracture surface processing method for a fracture surface generated by pulling and breaking a ductile metal part such as a connecting rod, a fracture surface processing apparatus thereof, and a method for manufacturing a ductile metal part.

In some cases, ductile metal parts are pulled and broken, and the half-split parts are recombined and used as a pair of products. An example of such a component is a connecting rod known as an automobile component. Then, there is a so-called FS (Fracture Splitting) method as a method of dividing the large end portion of the connecting rod into a rod portion and a cap portion. In one example of such an FS method, a wedge is pressed against a mandrel to apply a pressurization to the mandrel, and then a dynamic load is applied to break the connecting rod.

Further, a fracture surface processing method for processing the fracture surface of the connecting rod thus broken is also known. Specifically, for example, there is known a method for treating a fracture surface that removes material particles (broken powder) from the fracture surface when members such as a connecting rod, a bearing, and an annular housing are separated by fracture (for example). , Patent Document 1).

Japanese Unexamined Patent Publication No. 2005-219165

However, in the technique disclosed in Patent Document 1, in order to remove the broken powder from the fracture surface, a large amount of time and number of times are required for the vibration process of applying vibration to the connecting rod and the air blowing process of blowing air to the fracture surface. There was room for improvement.

An object of the present invention is a fracture surface treatment method for a fracture surface that efficiently peels and removes fracture powder adhering to a fracture surface of a fractured ductile metal part, a fracture surface processing apparatus thereof, and a method for manufacturing a ductile metal part. Is to provide.

In order to achieve the above object, the fracture surface treatment method for a ductile metal part of the present invention treats each fracture surface of a fractured part divided by breaking the ductile metal part in the fracture direction. In the fracture surface processing method of the above, at least one of the holding step of holding the fractured parts in a state where the fractured surfaces of the fractured parts are separated from each other and the fractured parts held in the holding step. In a vibration step in which a predetermined vibration is applied in a direction intersecting the breaking direction, and in a state where the vibration is applied by the vibration step, the fracture surfaces of the fractured parts are pressed against each other with a specified pressing force. It includes a pressing step and a separating step of separating the fractured surfaces of the fractured parts from each other in a state where the vibration by the vibration step is applied after the pressing step.

By applying a predetermined vibration by the vibration step in the pressing step and the separating step in this way, in the pressing step, vibration is applied in a state where the fractured surfaces of the fractured parts are pressed against each other, and a slight amount is applied between the fractured surfaces. The fractured powder adhering to the fracture surface is satisfactorily separated from the fracture surface due to the occurrence of vibration, and in the separation step, vibration is applied with the fracture surface of the fractured part separated, and the fracture surface is separated from the fracture surface in the pressing process. The broken powder that has been well peeled off is wiped off. That is, it is possible to peel off and remove the broken powder from the fracture surface in both the pressing step and the separating step.
Therefore, the fractured powder adhering to the fracture surface of the fractured ductile metal part can be efficiently peeled off and removed by the fracture surface treatment method.

As another aspect, the vibration in the vibration step is applied in a direction along the fracture surface.
By vibrating the fracture surface to which the fracture powder is attached in the direction along the fracture surface in this way, the fracture surface tends to be adhered so as to protrude in the direction perpendicular to the fracture surface attached to the fracture surface due to the fracture. It is possible to efficiently remove the broken powder by applying vibration to the powder perpendicularly to the projecting direction.

As another aspect, after the lapse of a predetermined time in the pressing step, the separation step is performed in a state where the vibration by the vibration step is applied.
By performing the pressing in the pressing step for a predetermined time in this way, it is possible to better peel off the broken powder due to the pressing from the fracture surface.

Another aspect includes a blowing step of blowing air to at least one of the fractured surfaces after the separation step.
By adding the blowing step of blowing air to at least one of the fracture surfaces in this way after the separating step, it is possible to satisfactorily remove the broken powder that is not yet removed by the vibration step or the like.

As another aspect, the vibration step is also performed in the blowing step.
By allowing the vibration process to be performed also in the ventilation process in this way, it is possible to perform the ventilation process and the vibration process in combination, and to better peel and remove the broken powder.

As another embodiment, the pressing step and the separating step are performed a plurality of times.
As a result, the broken powder adhering to the fracture surface can be better peeled off and removed. In particular, since the broken powder can be satisfactorily removed by performing the pressing step and the separating step once as described above, it is possible to carry out the pressing step and the separating step once in a short time and in a small number of times even when the breaking powder is satisfactorily removed.

As another embodiment, a vibration stop step of stopping the vibration by the vibration step is included after the separation step.
By carrying out the vibration stop step after the separation step in this way, it is possible to stop the vibration after each of the divided fractured parts is separated, in other words, to continue the vibration by the vibration process until the separation. It is said that.

As another embodiment, a holding / releasing step of releasing the holding of each of the broken parts by the holding step is included after the vibration stopping step.
By carrying out the holding / releasing step after the vibration stopping step in this way, it is possible to carry out the holding / releasing step, that is, the vibration step until all the steps are completed.

Further, the method for manufacturing a ductile metal part of the present invention includes a breaking step of breaking the ductile metal part in the breaking direction to form each of the broken parts, and the above-mentioned breaking step of each of the broken parts formed in the breaking step. The fracture surface processing step of processing the fracture surface by the fracture surface processing method described above is included.
By including the fracture surface treatment step in which each fractured part is formed by the fracture step and then processed by the fracture surface processing method described above, the fracture surface is formed when each fractured part is formed by the fracture step. The adhering fractured powder can be peeled off and removed by the fracture surface treatment step.

Further, the fracture surface processing apparatus of the present invention is a fracture surface processing apparatus for ductile metal parts that processes the fracture surface of each fractured part divided by breaking the ductile metal part in the fracture direction. In a direction intersecting the breaking direction with respect to at least one of the holding means for holding the broken parts and the holding means holding the broken parts with the fractured surfaces separated from each other. The vibrating means to which the predetermined vibration is applied, the pressing means for pressing the fractured surfaces of the fractured parts held by the holding means against each other with a specified pressing force, and the respective holding means held by the holding means after the pressing means. It includes a separating means for separating the fractured surfaces of the fractured parts from each other, and a control means for operating the vibrating means when the pressing means and the separating means are operated.

By operating the vibrating means when the pressing means and the separating means are operated in this way, when the pressing means is operated, vibration is applied in a state where the fractured surfaces of the fractured parts are pressed against each other, and the fracture is applied. Due to the slight vibration generated between the cross sections, the fractured powder adhering to the fractured surface is satisfactorily separated from the fractured surface, and when the separating means is operated, vibration is applied with the fractured surfaces of the fractured parts separated. The fractured powder that has been satisfactorily peeled off from the fracture surface in the pressing step is removed. That is, it is possible to satisfactorily peel off and remove the broken powder from the fracture surface when the pressing means and the separating means are operated.

As another aspect, when the fractured surfaces of the fractured parts held by the holding means are pressed against each other by a designated pressing force, the facing means for aligning the fractured surfaces without deviation is further provided.
By aligning the fracture surfaces having a unique fracture surface shape formed when the fracture surface is fractured and divided in this way without deviation, in other words, by accurately matching the unique unevenness of the fracture surface, the fracture occurs. It is possible to more accurately peel off and remove the fractured powder adhering to the fractured surface by applying a slight vibration to the fractured surface by the pressing means and the vibrating means in a state where the cross sections are in close contact with each other without a gap.

According to the method for treating a fracture surface of a ductile metal part of the present invention, the fracture surface processing apparatus thereof, and the method for manufacturing a ductile metal part, the pressing step is performed by applying vibration due to the vibration step in the pressing step and the separating step. In the above, vibration is applied in a state where the fracture surfaces of the fractured parts are pressed against each other, and a slight vibration is generated between the fracture surfaces, so that the fracture powder adhering to the fracture surface is satisfactorily separated from the fracture surface and separated. In the process, vibration is applied in a state where the fractured surfaces of the fractured parts are separated, and the fractured powder satisfactorily peeled off from the fractured surface in the pressing step is wiped off. That is, the broken powder can be peeled off and removed from the fracture surface in both the pressing step and the separating step.

As a result, the fractured powder adhering to the fracture surface of the fractured ductile metal part can be efficiently peeled off and removed by the fracture surface treatment method.

It is a block diagram of the fracture surface processing apparatus of the ductile metal part which concerns on 1st Embodiment. It is a top view of the connecting rod and the air nozzle. It is a flowchart which showed the routine of the control procedure which a control device executes. It is a block diagram of the fracture surface processing apparatus of the ductile metal part which concerns on 2nd Embodiment.

Hereinafter, a fracture surface processing apparatus and a fracture surface processing method for ductile metal parts according to each embodiment of the present invention will be described.
The fracture surface processing device 1 for ductile metal parts according to the present embodiment is a connecting rod breaking device that is one of ductile metal parts and breaks a connecting rod used in an automobile, and is a broken connecting rod. It is a device that peels off and removes the breaking powder adhering to the fracture surface of the rod.

<First Embodiment>
With reference to FIG. 1, a configuration diagram of a fracture surface processing apparatus 1 for ductile metal parts according to the first embodiment is shown. The fracture surface processing device 1 is attached between the lower base (holding means) 100 and the upper base 110, which are arranged at regular intervals and are formed as a rigid body by a support stay (not shown).

The lower base 100 is provided with a breaking powder receiving portion 109 for receiving the breaking powder 59 removed from the connecting rod (ductile metal part) 50 by the fracture surface processing device 1. On the upper surface of the lower base 100, a rod-side positioning spacer (holding means) 101 for positioning the broken connecting rod 50, a fracture surface separating portion (holding means, separating means) 102, and a small end portion 55 of the connecting rod 50 are provided. A small end pin (holding means) 105 that is fitted and restrains the small end portion 55 is arranged.

A fracture surface pressing portion (holding means, pressing means) 103 is placed on the upper surface of the fracture surface separating portion 102. The fracture surface pressing portion 103 is supported by a support frame (not shown) together with the inner diameter centering chuck (face-to-face matching means) 106 described later. The large end portion 52 on the cap side of the broken connecting rod 50 is placed on the fracture surface separating portion 102, and the fracture surface separating portion 102 and the fracture surface pressing portion 103 move, so that the large end portion 51 on the rod side is moved. And the large end portion 52 on the cap side move in the direction of separation or approach (breaking direction) and are positioned.

The upper base 110 is provided with a vibration imparting portion 120. The vibration applying unit 120 includes a clamper cylinder 121, a damper 122, a clamper (holding means) 123, and a vibration actuator (vibration means) 124. Then, the clamper 123 is attached to the upper base 110 in a suspended state via the clamper cylinder 121 and the damper 122. Further, a vibration actuator 124 is attached to the upper part of the clamper 123.

An air cylinder is used for the clamper cylinder 121. The clamper cylinder 121 is not limited to an air cylinder and may be a hydraulic cylinder.
A coil spring 122a is built in the damper 122. The reason why the damper 122 is inserted between the clamper 123 and the clamper cylinder 121 is that the vibration can be efficiently transmitted to the clamper 123 through such a spring element, and the clamper 123 is operated. This is to suppress vibration propagation to other components such as the cylinder 121 and prevent troubles caused by applying vibration. Therefore, the damper 122 is not always necessary unless such a problem occurs.

As a result, when the clamper cylinder 121 is supplied with an appropriate air pressure and operates, a downward pressing force is applied to the clamper 123 via the damper 122. As the vibration actuator 124, for example, an pneumatic air vibrator capable of applying vibration (predetermined vibration) of 50 Hz to 100 Hz to the clamper 123 for about 1 second to several seconds is used.

As described above, the clamper 123 is for clamping via a spring element such as a spring or an air damper in consideration of vibration propagation property.
The clamper 123 is made of a metal having excellent impact resistance, and has an E-shaped outer shape when viewed from the side. The clamper 123 has three abutting portions for the connecting rod 50, and the first abutting portion 123a is abutted against a part of the upper surface of the cap-side large end portion 52, and the second abutting portion 123b is abutted against the upper surface of the large end portion 51 on the rod side. Further, the third abutting portion 123c is abutted against the upper surface of the small end portion 55.

As a result, the broken connecting rod 50 is clamped via the rod-side positioning spacer 101 on the lower base 100 side, the fracture surface pressing portion 103, and the small end pin 105, and the clamper 123 on the upper base 110 side. It is held by the pressing force of the clamper cylinder 121 connected to the clamper 123. Further, the vibration actuator 124 is operated (vibrated) in a timely manner while holding the broken connecting rod 50.

The vibration from the vibration actuator 124 passes through the clamper 123 to the fracture surface 51a, 52a with respect to the fracture surface 51a on the rod side large end 51 side of the connecting rod 50 and the fracture surface 52a on the cap side large end 52 side. It acts in the direction along the line (the direction that intersects the breaking direction), that is, in the vertical direction as seen in FIG. That is, the breaking powder 59, which tends to adhere so as to protrude in the direction perpendicular to the fracture surfaces 51a and 52a, is vibrated perpendicularly to the protruding direction to peel off and remove the breaking powder 59. be able to.

Here, the pressing force of the clamper 123 on the connecting rod 50 is appropriately adjusted. That is, when vibration is applied, a slight gap is formed between the clamper 123 and the connecting rod 50, the clamper 123 slightly jumps up, and the clamping force is loosely adjusted so that the vibration is sufficiently propagated to the connecting rod 50. As a result, the breaking powder 59 can be efficiently removed by the vibration generated by the repeated contact and separation of the clamper 123 with and away from the connecting rod 50.

With reference to FIG. 2, a top view of the connecting rod 50 and the air nozzle 125 is shown. In the fracture surface processing device 1, an air nozzle 125 that blows an air flow onto the fracture surface 51a, 52a is arranged in the vicinity of the fracture surface 51a, 52a of the connecting rod 50. An air pump 126 is connected to the air nozzle 125. The air pump 126 is electrically connected to a control device (control means) 60 described later, and when the air pump 126 is operated by the control device 60, air blow (blower) can be performed through the air nozzle 125.

That is, the adhesive force of the breaking powder 59, which is partially peeled from the fracture surfaces 51a and 52a and the remaining part is attached to this surface, is loosened by applying vibration in a direction parallel to the fracture surfaces 51a and 52a. Therefore, even if the breaking powder 59 cannot be removed only by the vibration of the vibration actuator 124, the breaking powder 59 can be removed by air blowing. Further, the inner diameter centering chuck 106 has two chuck pads 107 via a support shaft.

The two chuck pads 107 are arranged inside the large end of the broken connecting rod 50. In the inner diameter centering chuck 106, the two chuck pads 107 are separated from each other and the fractured portion of the inner peripheral surface of the large end of the connecting rod 50 is pressed from the inner peripheral surface side in the direction indicated by the arrow in FIG. It serves as a face-to-face mechanism for matching 52a with each other without deviation.

That is, the inner diameter centering chuck 106 helps to press the fractured surfaces 51a and 52a of the broken connecting rod 50 in an optimum state by the fracture surface pressing portion 103. In FIG. 1, the air nozzle 125, the air pump 126, and the inner diameter centering chuck 106 are omitted.

The control device 60 is a control device for performing comprehensive control of the fracture surface processing device 1, and includes an input / output device, a storage device (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), and the like. It is composed of. Further, the control device 60 electrically connects each actuator (not shown) for moving each chuck pad 107 of the fracture surface separating portion 102, the fracture surface pressing portion 103, and the inner diameter centering chuck 106, the vibration actuator 124, and the air pump 126. It is connected.

That is, by moving the fracture surface separating portion 102 along the fracture direction by the operation of the actuator, the cap-side large end portion 52 is moved so that the fracture surface 51a and the fracture surface 52a are separated from each other along the fracture direction. Further, by moving the fracture surface pressing portion 103 along the fracture direction by operating the actuator, the cap-side large end portion 52 is moved along the fracture direction so that the fracture surface 51a and the fracture surface 52a come into contact with each other.

Further, by moving each chuck pad 107 of the inner diameter centering chuck 106 along the breaking direction by the operation of the actuator, the large end portion 52 on the cap side is moved so that the fracture surfaces 51a and 52a face each other without deviation. .. Further, by operating the vibration actuator 124, the connecting rod 50 is vibrated via the clamper 123, and by operating the air pump 126, the fracture surface 51a and the fracture surface 52a are air blown.

Referring to FIG. 3, a flowchart shows a routine showing a control procedure executed by the control device 60. Hereinafter, an example and an operation of the fracture surface processing method of the connecting rod 50 using the fracture surface processing apparatus 1 according to the first embodiment of the present invention will be described.

First, in the breaking step of step S1, the connecting rod 50 is broken by a breaking device (not shown) of the connecting rod. The breaking device of the connecting rod 50 divides the large end portion of the connecting rod 50 into a rod side large end portion 51 and a cap side large end portion 52. In the construction method, for example, a notch is formed at a position where a fracture surface 51a and a fracture surface 52a are to be formed on the inner peripheral surface at the opening of the large end of the connecting rod 50, and a half-split mandrel is inserted into the opening.

Next, by driving a wedge into the gap between each mandrel, each mandrel is pressed toward the cap side or the rod side (breaking direction), respectively. As a result, a crack is generated from the notch, the large end of the connecting rod 50 is broken in a form of being pulled in the breaking direction, and the connecting rod 50 is divided into a rod-side large end 51 and a cap-side large end 52, and the fracture surface 51a And the fracture surface 52a is formed. The configuration of the breaking device of the connecting rod 50 and the breaking method of the connecting rod 50 are not limited to this, and the mandrel on the cylindrical shape is press-fitted into the opening of the large end of the connecting rod 50 to make the connecting rod 50 large. The end portion may be divided into a rod-side large end portion 51 and a cap-side large end portion 52 to form a fracture surface 51a and a fracture surface 52a.

Next, in the holding step of step S2, the connecting rod 50 broken by the breaking device of the connecting rod 50 is conveyed from this breaking device and positioned and held on the lower base 100 of the fracture surface processing device 1. In this positioning and holding, the small end portion 55 of the connecting rod 50 is fitted into the small end pin 105, and the rod side large end portion 51 of the broken connecting rod 50 is placed on the rod side positioning spacer 101.

Further, by moving the fracture surface separating portion 102, the cap-side large end portion 52 of the broken connecting rod 50 is separated from the rod-side large end portion 51 and the cap-side large end portion 52 by a certain distance. Positioned. Further, the inner diameter centering chuck 106 restrains the connecting rod 50 with the rod-side large end portion 51 and the cap-side large end portion 52 in a state where the fracture surfaces 51a and 52a are face-to-face with each other without deviation. By positioning and restraining the connecting rod 50 in this way, the fracture surfaces 51a and 52a are separated from each other in a facing state and are positioned and held.

After that, the clamper cylinder 121 is operated downward in FIG. 1, and the damper 122, the clamper 123, and the vibration actuator 124 are moved downward. As a result, the clamper 123 clamps the connecting rod 50 via the damper 122 with a preset clamping force.

Next, in the vibration step of step S3, for example, when the vibration actuator 124 is made of an air vibrator or the like, the vibration actuator 124 is vibrated by supplying air to the air vibrator. In this vibration operation, the vibration frequency is, for example, about 50 Hz to 100 Hz. As a result, the vibration is propagated to the connecting rod 50.

At this time, the clamping force is adjusted so loosely that a slight gap is formed between the clamper 123 and the connecting rod 50 by slightly jumping up the clamper 123 when the vibration is applied, so that the vibration propagates to the connecting rod 50. Then, the breaking powder 59 is efficiently removed from the fracture surfaces 51a and 52a by the vibration generated by the repeated contact and separation of the clamper 123 with and away from the connecting rod 50. This vibration step (step S3) can be continued until the vibration stop step (step S8) described later.

Next, in the pressing step of step S4, the fracture surface pressing portion 103 moves the cap side large end portion 52 toward the rod side large end portion 51, and the cap side large end portion 52 comes into contact with the rod side large end portion 51. , Pressed with the specified pressing force.

Then, in step S5, it is determined whether or not the time elapsed since the pressing step of step S4 is started has elapsed a predetermined time. When it is determined that the specified time has not elapsed, the process proceeds to step S4, and the pressing step and the determination in step S5 are performed. Further, when it is determined that the specified time has elapsed, the process proceeds to the separation step of step S6. That is, in step S5, the pressing step is continued until the time elapsed from the start of the pressing step elapses for a predetermined time.

At this time, since the fracture surface 51a and the fracture surface 52a are pressed and the vibration is applied, the slight vibration is transmitted between the fracture surface 51a and 52a, and the fracture powder 59 adhering to the surface is peeled off. In particular, when the fracture surface 51a and the fracture surface 52a come into contact with each other, the fracture surface 51a and the fracture surface 52a are in contact with each other while being vibrated by the vibration step (step S3), so that friction due to slight vibration occurs between the fracture surface 51a and the fracture surface 52a. Then, the breaking powder 59 is satisfactorily peeled off.

More specifically, in the holding step of step S2, the fractured surfaces 51a and 52a are face-to-face and positioned so that the connecting rods 50 are fractured and divided into the fractured surfaces 51a and 52a in the pressing step. It is possible to engage the unique irregularities of the generated fracture surfaces 51a and 52a, in other words, the hangnail (surface damage) of the fractured new surface.

Then, in a state where the fracture surfaces 51a and 52a are in close contact with each other without a gap, a minute vertical vibration (longitudinal vibration) is applied to the fracture surfaces 51a and 52a, and the fracture surfaces 51a and 52a become familiar with each other. The hangnail repeats minute contact and separation. As a result, in the separation step and the feeding step described later, the hangnail formed on the fracture surfaces 51a and 52a is satisfactorily separated and peeled off from the fracture surfaces 51a and 52a, and the fine fracture powder 59 adhering to the fracture surfaces 51a and 52a is formed. It is satisfactorily separated and removed from the fracture surfaces 51a and 52a.

Next, in the separation step of step S6, the fracture surface separating portion 102 moves the cap-side large end portion 52 in the direction of separating from the rod-side large end portion 51 by an actuator or the like (not shown).

At this time, since the fracture surface 51a and the fracture surface 52a are separated from each other while being vibrated, friction due to slight vibration is generated between the fracture surface 51a and the fracture surface 52a until just before the fracture surfaces 51a and 52a are completely separated from each other. It is generated and the broken powder 59 is better peeled off. Further, even after the fracture surface 51a and the fracture surface 52a are completely separated from each other, vibration due to the vibration process is applied, so that the fracture powder 59 in a state of being peeled off from the fracture surfaces 51a and 52a is removed. Can be removed.

Next, in the blowing step of step S7, the air pump 126 blows an air flow onto the fracture surfaces 51a and 52a via the air nozzle 125. At this time, the breaking powder 59 that was not removed until the separation step of step S6 is removed.

After that, the vibration stop step in step S8 ends the vibration by the vibration actuator 124 that has been continued from the vibration step in step S3. Then, the holding release step of step S9 ends the holding of the connecting rod 50 that has been continued from the holding step of step S2.

As described above, in the method for treating the fracture surface of the ductile metal part according to the present invention, the fracture surfaces 51a and 52a of the large end portion 51 on the rod side divided by breaking the connecting rod 50 in the breaking direction are processed. This is a method for processing the fractured surfaces 51a and 52a of the connecting rod 50, wherein the fractured surfaces 51a and 52a of the rod-side large end 51 and the cap-side large end 52 are separated from each other and the rod-side large end 51 and the cap are separated from each other. Along the fracture surface 51a, 52a with respect to at least one of the holding step (step S2) of holding the side large end 52 and the rod side large end 51 and the cap side large end 52 held in the holding step. The fractured surfaces 51a and 52a of the rod-side large end 51 and the cap-side large end 52 during a specified time in the vibration step (step S3) in which a predetermined vibration is applied in the direction and the vibration in the vibration process is applied. The fracture surfaces 51a and 52a of the rod-side large end portion 51 and the cap-side large end portion 52 are subjected to a pressing step (step S4) in which the two are pressed against each other with a specified pressing force and a vibration due to a vibration step is applied after the pressing step. A separation step (step S6) is included.

Therefore, since the vibration due to the vibration step is applied in the pressing step and the separating step, in the pressing step, the vibration is applied while the fracture surfaces 51a and 52a are pressed against each other, and the fractured powder adhering to the fracture surfaces 51a and 52a is applied. 59 is satisfactorily separated from the fracture surfaces 51a and 52a due to friction between the fracture surfaces 51a and 52a, and in the separation step, vibration is applied with the fracture surfaces 51a and 52a separated, and the fracture surface 51a is applied in the pressing process. , 52a, the breaking powder 59 satisfactorily peeled off is wiped off and removed.

That is, the broken powder 59 can be satisfactorily peeled off and removed from the fracture surfaces 51a and 52a only by performing both the pressing step and the separating step once. Therefore, the breaking powder 59 adhering to the fractured surfaces 51a and 52a of the broken connecting rod 50 is efficiently removed from the fractured powder 59 adhering to the fractured surfaces 51a and 52a of the broken connecting rod 50 by the treatment method of the fractured surfaces 51a and 52a. It can be peeled off and removed satisfactorily.

The vibration process is also performed in the ventilation process. Therefore, the blowing process and the vibration process can be performed in combination to better peel and remove the broken powder 59.
Since the vibration stop step was performed after the separation step, the vibration was stopped after the rod side large end portion 51 and the cap side large end portion 52 were separated from each other, in other words, the vibration due to the vibration step until the separation step was performed. Can be continued.

Then, after the vibration stop step, a holding release step of releasing the holding of the rod side large end portion 51 and the cap side large end portion 52 by the holding step is included. Therefore, since the holding / releasing step is performed after the vibration stopping step, the holding / releasing step, that is, the vibration step can be carried out until all the steps are completed.

Then, the fracture surface processing device 1 for the connecting rod 50 processes the fracture surfaces 51a and 52a of the rod-side large end portion 51 and the cap-side large end portion 52, which are divided by breaking the connecting rod 50 in the breaking direction. The lower base 100 and the clamper that hold the rod-side large end 51 and the cap-side large end 52, respectively, with the fracture surfaces 51a and 52a of the rod-side large end 51 and the cap-side large end 52 separated from each other. Vibration actuator 124 that applies a predetermined vibration to at least one of the rod-side large end 51 and the cap-side large end 52 held by the lower base 100 and the clamper 123 in a direction intersecting the breaking direction. The fracture surface pressing portion 103 that presses the fracture surfaces 51a and 52a of the rod side large end portion 51 and the cap side large end portion 52 held by the lower base 100 and the clamper 123 against each other with a specified pressing force, and the fracture surface pressing portion 103. A fracture surface separating portion 102 that separates the fracture surfaces 51a and 52a of the rod-side large end portion 51 and the cap-side large end portion 52 held by the lower base 100 and the clamper 123 after being pressed by the portion 103, and the fracture surface pressing portion. It is provided with a control device 60 that operates the vibration actuator 124 when the pressing operation by the 103 and the separation operation of the fracture surface separating portion 102 are performed.

Therefore, since the vibration actuator 124 is operated when the fracture surface pressing portion 103 and the fracture surface separating portion 102 are operated, the rod side large end portion 51 and the cap side large end portion are operated when the fracture surface pressing portion 103 is operated. Vibration is applied in a state where the fracture surfaces 51a and 52a of 52 are pressed against each other, and a slight vibration is generated between the fracture surfaces 51a and 52a. When the fracture surface separation portion 102 is operated, vibration is applied in a state where the fracture surface 51a and 52a of the rod side large end portion 51 and the cap side large end portion 52 are separated from each other, and the pressing process is performed. The broken powder 59 that has been satisfactorily peeled off from the fracture surfaces 51a and 52a is wiped off and removed. That is, when the fracture surface pressing portion 103 and the fracture surface separating portion 102 are operated, the fractured powder 59 can be satisfactorily peeled off and removed from the fracture surface 51a and 52a.

<Second Embodiment>
Hereinafter, the second embodiment will be described with reference to FIG. The configurations common to those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. Here, the parts different from those of the first embodiment will be described.
With reference to FIG. 4, a block diagram of the fracture surface processing apparatus 201 for ductile metal parts according to the second embodiment is shown.

In the fracture surface processing device 201, a movable lower base 200 is arranged above the lower base 210. The movable lower base 200 is provided with a lower vibration imparting portion 220. The lower vibration applying portion 220 includes a pallet (holding means) 206, a movable base 209, two dampers 222, a pallet cylinder 221 and a vibration actuator (vibration means) 224.

The pallet 206 is composed of a rod-side pallet 207 and a cap-side pallet 208. The rod-side pallet 207 is provided with a rod-side positioning spacer 202 for positioning the rod-side large end 51 of the connecting rod 50. A cap-side large end 52 is arranged on the cap-side pallet 208. The movable base 209 is provided facing the lower side of the pallet 206.
The two dampers 222 are miniaturized dampers 122, and are provided at positions sandwiched between the pallet 206 and the movable base 209. The pallet cylinder 221 is fixed to the lower base 210 and can be operated to move the movable base 209 in the vertical direction.

The vibration actuator 224 is the same as the vibration actuator 124, and is arranged on the lower surface of the rod-side pallet 207. That is, the vibration actuator 224 can apply vibration to the connecting rod 50 via the pallet 206 by operating the vibration actuator 224.

With these configurations, the clamper cylinder 121 and the pallet cylinder 221 are operated to move the clamper 123 and the movable base 209 in the vertical direction to hold the connecting rod 50 so as to sandwich the connecting rod 50. A holding step is performed.

After the holding step, the vibration actuator 224 is operated to vibrate the clamper 123 and the pallet 206 to transmit the vibration to the connecting rod 50, and the vibration step of step S3 shown in FIG. 3 is performed. At this time, the clamper 123 is held by the clamper cylinder 121 via the damper 122, and the pallet 206 is held by the movable base 209 via the dampers 222 and 222, and vibration is applied to the connecting rod 50 in the vibration process. ..

As described above, in the method for treating a fracture surface of a ductile metal part according to the present invention, vibration due to a vibration step is applied in the pressing step and the separating step as in the case of the first embodiment. Vibration is applied while the 52a are pressed against each other, and the breaking powder 59 adhering to the fractured surfaces 51a and 52a is satisfactorily separated from the fractured surfaces 51a and 52a by friction between the fractured surfaces 51a and 52a. Vibration is applied in a state where the fracture surfaces 51a and 52a are separated from each other, and the fractured powder 59 satisfactorily peeled from the fracture surfaces 51a and 52a in the pressing step is wiped off and removed.

In particular, in the present embodiment, the clamper 123 is held by the clamper cylinder 121 via the damper 122, and the pallet 206 is held by the movable base 209 via the damper 222, 222. Therefore, in the case of the first embodiment. In comparison with the above, the connecting rod 50 can effectively apply minute vibrations in the vibration process. Therefore, as in the case of the first embodiment, the breaking powder 59 is more satisfactorily peeled off and removed from the fractured surfaces 51a and 52a by friction between the fractured surfaces 51a and 52a.

The description of the fracture surface processing method for ductile metal parts, the fracture surface processing apparatus thereof, and the manufacturing method for ductile metal parts according to the present invention is completed, but the present invention is not limited to the above embodiment. It can be changed without departing from the gist of the invention.
For example, in the present embodiment, step S4 (pressing step) and step S6 (separation step) are performed once, but these steps may be performed a plurality of times. Further, when these steps are carried out a plurality of times, the step S7 (blower step) may be carried out a plurality of times accordingly.

Further, in the present embodiment, the vibration step (step S3) continuously applies vibration to the connecting rod 50 from step S4 to step S7 until the vibration stop step (step S8). However, the present invention is not limited to this, and vibration is applied to the connecting rod 50 only in the state where the fracture surfaces 51a and 52a are pressed in the pressing step and in the state where the fracture surfaces 51a and 52a are completely separated from each other in the separation step. In other cases, the vibration application may be stopped.

1 Fracture surface processing device 50 Connecting rod (ductile metal part)
51 Rod side large end (broken part)
51a, 52a Fracture surface 52 Cap side large end (broken part)
59 Breaking powder 60 Control device (control means)
100 Lower base (holding means)
101 Rod side positioning spacer (holding means)
102 Fracture section separation part (holding means, separation means)
103 Fracture surface pressing part (holding means, pressing means)
105 Small end pin (holding means)
106 Inner Diameter Centering Chuck (Face Alignment Means)
123 Clamper (holding means)
124, 224 Vibration actuator (vibration means)
126 Air pump 206 Pallet (holding means)

Claims (11)

It is a method for treating a fracture surface of a ductile metal part, which processes each fracture surface of the fractured part divided by breaking the ductile metal part in the fracture direction.
A holding step of holding each of the fractured parts in a state where the fractured surfaces of the fractured parts are separated from each other.
A vibration step of applying a predetermined vibration to at least one of the broken parts held in the holding step in a direction intersecting the breaking direction.
A pressing step of pressing the fractured surfaces of the fractured parts against each other with a specified pressing force while the vibration is applied by the vibration step.
A method for treating a fracture surface of a ductile metal part, which comprises a separation step of separating the fracture surfaces of the fractured parts from each other in a state where the vibration is applied by the vibration process after the pressing step. The method for treating a fracture surface of a ductile metal part according to claim 1, wherein the vibration in the vibration step is applied in a direction along the fracture surface. The method for treating a fracture surface of a ductile metal part according to claim 1 or 2, wherein the separation step is performed in a state where the vibration is applied by the vibration step after a lapse of a predetermined time in the pressing step. The method for treating a fracture surface of a ductile metal part according to any one of claims 1 to 3, further comprising a blowing step of blowing air to at least one of the fracture surfaces after the separation step. The method for treating a fracture surface of a ductile metal part according to claim 4, wherein the vibration step is also performed in the blowing step. The method for treating a fracture surface of a ductile metal part according to any one of claims 1 to 5, wherein the pressing step and the separating step are performed a plurality of times. The method for treating a fracture surface of a ductile metal part according to any one of claims 1 to 6, further comprising a vibration stop step of stopping the vibration by the vibration step after the separation step. The fracture surface processing method for a ductile metal part according to claim 7, further comprising a holding / releasing step of releasing the holding of each of the broken parts by the holding step after the vibration stopping step. A breaking step of breaking the ductile metal part in the breaking direction to form each broken part,
A method for manufacturing a ductile metal part, which comprises a fracture surface treatment step of treating the fracture surface of each fractured part formed in the fracture step by the fracture surface processing method according to any one of claims 1 to 8. .. It is a fracture surface processing device for ductile metal parts that processes the fracture surface of each fractured part divided by breaking the ductile metal part in the fracture direction.
A holding means for holding each of the fractured parts in a state where the fracture surface of each of the fractured parts is separated from each other.
A vibrating means for applying a predetermined vibration to at least one of the broken parts held by the holding means in a direction intersecting the breaking direction.
A pressing means for pressing the fractured surfaces of the fractured parts held by the holding means against each other with a specified pressing force, and a pressing means.
A separating means for separating the fractured surfaces of the broken parts held by the holding means after the pressing means, and a separating means.
A fracture surface processing device for ductile metal parts, comprising a pressing means and a controlling means for operating the vibrating means when the separating means is operated. The tenth aspect of the present invention further comprises a face-to-face means for aligning the fractured surfaces without deviation when the fractured surfaces of the fractured parts held by the pressing means are pressed against each other with a specified pressing force. Fracture processing equipment for ductile metal parts.

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