CN113600736A - Swing rolling processing device and control method of swing rolling processing device - Google Patents
Swing rolling processing device and control method of swing rolling processing device Download PDFInfo
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- CN113600736A CN113600736A CN202110718378.5A CN202110718378A CN113600736A CN 113600736 A CN113600736 A CN 113600736A CN 202110718378 A CN202110718378 A CN 202110718378A CN 113600736 A CN113600736 A CN 113600736A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 94
- 238000012545 processing Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009490 roller compaction Methods 0.000 claims description 16
- 238000013459 approach Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 abstract description 25
- 239000004033 plastic Substances 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 12
- 238000005056 compaction Methods 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000003574 free electron Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
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Abstract
The embodiment of the application discloses a swinging rolling processing device and a control method of the swinging rolling processing device. The swing rolling processing device comprises a bearing piece, a swing head, a pulse power supply and a driving piece. The carrier is used for accommodating the blank. The swinging head is arranged above the bearing piece and used for rolling blanks in the bearing piece. The pulse power supply is connected with the swinging head and the bearing piece to form a current loop. The driving piece is used for driving the bearing piece to be close to or far away from the swinging head so as to enable the blank to be in contact with or separated from the swinging head. When the blank is contacted with the swinging head, the current loop is conducted, and when the blank is separated from the swinging head, the current loop is disconnected. Through setting up pulse power supply and being connected with pendulum head and carrier to form the electric current return circuit, make pulse current can flow through the stock, improved the plastic deformation ability of stock, make the stock change in to be rolled processing, improve the swing and roll processing device's machining efficiency, improve the swing simultaneously and roll processing device to the machining effect of stock, ensure the precision of the part that obtains.
Description
Technical Field
The embodiment of the application relates to the technical field of swing rolling processing devices, in particular to a swing rolling processing device and a control method of the swing rolling processing device.
Background
The swing rolling processing is an important processing technology for plastic forming of metal materials. In the swing rolling process, the swing head rotates around the axis to roll the blank, so that the blank can be processed and formed into a metal part.
The swing rolling processing has the advantages of small impact, small vibration, small noise, low cost and the like, is particularly suitable for pressing thin disc parts such as thin wafers, discs, automobile half-shaft flanges and the like, and is widely applied to many fields such as automobiles, electric appliances, instruments, hardware tools and the like.
However, the metal blank has poor plastic deformation capability and is not easy to form, so that the machining efficiency of the swing rolling is reduced, and the precision of parts obtained by the swing rolling is reduced.
Disclosure of Invention
In order to solve at least one of the above technical problems, embodiments of the present application provide an oscillating rolling processing apparatus and a control method of the oscillating rolling processing apparatus.
In a first aspect, an embodiment of the present application provides an oscillating roller compaction processing apparatus, including: the bearing piece is used for accommodating the blank; the swinging head is arranged above the bearing piece and is used for rolling blanks in the bearing piece; the pulse power supply is connected with the swinging head and the bearing piece to form a current loop; the driving piece is used for driving the bearing piece to be close to or far away from the swinging head so as to enable the blank to be contacted with or separated from the swinging head; when the blank is contacted with the swinging head, the current loop is conducted, and when the blank is separated from the swinging head, the current loop is disconnected.
In one possible embodiment, the oscillating rolling mill apparatus further includes: the eccentric swash plate is provided with an opening, an included angle is formed between the axis of the opening and the axis of the eccentric swash plate, and one end of the swinging head is arranged in the opening; and the main shaft is connected with the eccentric swash plate and is used for driving the eccentric swash plate to rotate.
In one possible embodiment, the pulsed power source includes a brush that is slidably coupled to an eccentric swash plate.
In a possible embodiment, a bearing is arranged in the opening, and one end of the swinging head is connected with the bearing.
In one possible embodiment, the main shaft is connected in an insulated manner to the eccentric swash plate.
In one possible embodiment, the pulsed power supply further comprises: the current transmitting device is used for transmitting pulse current; and the waveform control device is connected with the current transmitting device and is used for controlling the waveform of the pulse current.
In one possible embodiment, the oscillating rolling mill apparatus further includes: and the vibration exciter is in insulated connection with the bearing part and is used for driving the bearing part to vibrate.
In one possible embodiment, the oscillating rolling mill apparatus further includes: the workstation, the workstation holds carrier insulated connection with bearing for support holds carrier, driving piece connect in the workstation.
In a second aspect, an embodiment of the present application provides a control method for an oscillating rolling compaction machine, configured to control the oscillating rolling compaction machine of the first aspect, where the control method for the oscillating rolling compaction machine includes: controlling the bearing piece to be close to the swinging head so that the blank is in contact with the swinging head; controlling the pulse power supply to be started; and controlling the swinging head to roll the blank.
In a possible embodiment, after the step of controlling the carrier to approach the swing head so as to contact the blank with the swing head, the method further comprises: and controlling a vibration exciter of the swinging and rolling processing device to be started.
The embodiment of the application has the following beneficial effects:
by setting a pulse current to flow through the blank, a large amount of directionally drifting free electrons can be generated in the blank. The free electrons collide with atoms of the blank, so that the kinetic energy of the atoms is increased, the dislocation activation of the blank is promoted, the generation of a fracture cavity is inhibited, the plastic deformation resistance of the blank is reduced, the plastic deformation capacity of the blank is improved, and the blank is easier to machine and form.
Meanwhile, the pulse current flows through the blank, so that the heat of the blank can be improved, atoms in the blank can obtain enough kinetic energy under the action of the pulse current, the atoms leave a balance position, the diffusion capacity of the atoms is enhanced, and the plastic deformation capacity of the blank is further improved.
Through setting up pulse power supply, the stock can be flowed through to control pulse current, need not to soften annealing etc. processing to the stock, can improve the plastic deformation ability of stock, improve the swing and roll processingequipment's machining efficiency, the life who holds the carrier is prolonged, improve the swing simultaneously and roll processingequipment to the machining effect of stock, ensure the part precision that obtains, and do not have the naked light in the course of working, need not to set up arc control device etc. reduce the swing and roll processingequipment's cost.
In addition, set up pulse power supply and yaw and hold the piece and be connected, when yaw and stock contact, the electric current return circuit can switch on automatically, and pulse current can flow through the stock, has improved the automation of swing rolling processingequipment, and when yaw and stock separation, pulse current can't flow through the stock, has reduced the energy consumption of swing rolling processingequipment. The on-state of the current loop can be controlled by the contact or separation of the swinging head and the blank, the reliability of the swinging rolling processing device is improved, other control devices are not required to be arranged, and the cost of the swinging rolling processing device is further reduced.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of an oscillating rolling compaction device according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating steps of a control method of an oscillating rolling compaction apparatus according to an embodiment of the present disclosure.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
100: swing rolling processing device, 110: a carrier, 120: blank, 130: head swinging, 140: pulse power supply, 142: brush, 144: current transmitting device, 146: waveform control device, 150: drive member, 160: eccentric swash plate, 162: opening, 164: bearing, 170: main shaft, 180: a vibration exciter, 190: a work bench.
Detailed Description
In order to better understand the technical solutions described above, the technical solutions of the embodiments of the present application are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and the embodiments of the present application may be combined with each other without conflict.
In a first aspect, as shown in fig. 1, an embodiment of the present application provides an oscillating rolling compaction apparatus 100, which includes a carrier 110, an oscillating head 130, a pulse power source 140, and a driving element 150. The carrier 110 is used for accommodating the blank 120. The oscillating head 130 is disposed above the carrier 110 for rolling the blank 120 inside the carrier 110. The pulse power source 140 is connected to the wobble head 130 and the carrier 110 to form a current loop. The driving member 150 is used for driving the carrier 110 to move close to or away from the swing head 130, so as to contact or separate the blank 120 with or from the swing head 130. When the blank 120 contacts the swing head 130, the current loop is turned on, and when the blank 120 is separated from the swing head 130, the current loop is turned off.
It is understood that the blank 120 may be a metal or an alloy. In some examples, the blank 120 may be an alloy structural steel. The oscillating rolling processing apparatus 100 rolls the blank 120 so that the blank 120 can be processed into a gear or a flange.
The carrier 110 is used for accommodating the blank 120, and in some examples, the carrier 110 may be a female mold, and the blank 120 is placed inside the female mold. The pendulum head 130 is disposed above the carrier 110 for rolling the blank 120 in the carrier 110, so that the blank 120 can be formed.
In some examples, the number of carriers 110 may be one or more. The number of the pendulums 130 may be the same as the number of the carriers 110, or may be different from the number of the carriers 110.
In some examples, the nominal pressure of the pendulum head 130 may be 800 kilonewtons, 1000 kilonewtons, or 1200 kilonewtons.
In some examples, the side of the pendulum head 130 contacting the blank 120 may be tapered or rounded to increase the rolling effect of the pendulum head 130 on the blank 120.
The pulse power source 140 is connected to the wobble head 130 and the carrier 110 to form a current loop. It is understood that the blank 120, the pendulum head 130 and the carrier 110 are all conductors. In some examples, the positive pole of the pulse power source 140 may be connected to the wobble head 130 and the negative pole connected to the carrier 110. In some examples, the negative pole of the pulse power source 140 can be connected to the wobble head 130 and the positive pole connected to the carrier 110.
The driving member 150 is used for driving the bearing member 110 to move close to or away from the swing head 130, and it is understood that the driving member 150 may be a cylinder or a rod. When the blank 120 needs to be rolled, the driving member 150 drives the carrier 110 to approach the swinging head 130, so that the swinging head 130 can contact with the blank 120. When the blank 120 needs to be added into the carrier 110 or the machined part needs to be taken out, the driving member 150 drives the carrier 110 to be away from the swinging head 130, so that the blank 120 can be separated from the swinging head 130.
It is understood that when the blank 120 contacts the swinging head 130, the current loop is turned on and a pulse current can flow through the blank 120. When the blank 120 is separated from the swinging head 130, the current loop is disconnected, and the pulse current cannot flow through the blank 120.
When the current loop is turned on, a pulse current flows through the blank 120, so that a large amount of directionally-shifted free electrons can be generated in the blank 120. The free electrons collide with the atoms of the blank 120, so that the kinetic energy of the atoms is increased, the dislocation activation of the blank 120 is promoted, the generation of fracture cavities is inhibited, the plastic deformation resistance of the blank 120 is reduced, the plastic deformation capacity of the blank 120 is improved, and the blank 120 is easier to machine and form.
Meanwhile, the pulse current flows through the blank 120, which can also increase the heat of the blank 120, so that the atoms in the blank 120 obtain enough kinetic energy under the action of the pulse current, and thus leave the equilibrium position, the diffusion capability of the atoms is enhanced, and the plastic deformation capability of the blank 120 is further improved.
Through setting up pulse power source 140, make pulse current can flow through stock 120, need not to soften annealing etc. processing to stock 120, can improve the plastic deformation ability of stock 120, improve the swing and roll the machining efficiency of processingequipment 100, the life of the carrier 110 is born in the extension, improve the swing simultaneously and roll processingequipment 100 to the machining effect of stock 120, ensure the part precision that obtains, and do not have the phenomenon of discharging of striking sparks in the course of working, thereby need not to set up arc control device etc., reduce the cost that the swing rolled processingequipment 100.
In addition, by arranging the pulse power source 140 to be connected with the swinging head 130 and the bearing member 110, when the swinging head 130 is in contact with the blank 120, the current loop can be automatically conducted, the pulse current can flow through the blank 120, so that the automation performance of the swinging rolling processing device 100 is improved, and when the swinging head 130 is separated from the blank 120, the pulse current cannot flow through the blank 120, so that the energy consumption of the swinging rolling processing device 100 is reduced, and the use reliability of the swinging rolling processing device 100 is improved.
Meanwhile, the conducting state of the current loop can be controlled by the contact or separation of the swing head 130 and the blank 120, and other control devices are not needed, so that the cost of the swing rolling processing device 100 is reduced.
In some examples, the pulse power source 140 may be controlled to emit pulse currents with different frequencies and waveforms according to the processing requirements of different blanks 120, so as to improve the applicability of the oscillating rolling processing apparatus 100. In some examples, the pulse power source 140 may emit pulse current of different waveforms, such as sine wave, square wave, or sawtooth wave.
In some examples, the driving member 150 may be controlled to drive the carrier 110 to move at different speeds and displacements according to the processing requirements of the oscillating rolling processing device 100 for different blanks 120.
In some examples, as shown in fig. 1, the oscillating roller compaction apparatus 100 further includes an eccentric swash plate 160 and a main shaft 170. The eccentric swash plate 160 is provided with an opening 162, an axis of the opening 162 forms an included angle alpha with an axis of the eccentric swash plate 160, and one end of the swing head 130 is arranged in the opening 162. The main shaft 170 is connected to the eccentric swash plate 160 for driving the eccentric swash plate 160 to rotate.
It is understood that the opening 162 is formed in the eccentric swash plate 160, an included angle α is formed between the axis of the opening 162 and the axis of the eccentric swash plate 160, and the swing head 130 is disposed in the opening 162 such that the included angle α is also formed between the axis of the swing head 130 and the axis of the opening 162.
In some examples, different angles of the included angle α may be set according to the processing requirements of the oscillating rolling processing device 100 for different blanks 120, so as to improve the applicability of the oscillating rolling processing device 100. In some examples, the included angle α may be 3 °, 5 °, or 8 °.
The main shaft 170 is connected to the eccentric swash plate 160 for driving the eccentric swash plate 160 to rotate. In some examples, the main shaft 170 may be fixedly connected to the eccentric swash plate 160, so as to improve the driving stability of the main shaft 170 to the eccentric swash plate 160, avoid the eccentric swash plate 160 from shifting or rotating relative to the main shaft 170, and improve the reliability of the swing rolling machine 100. In some examples, the main shaft 170 may be removably coupled to the eccentric swash plate 160 to facilitate servicing of the oscillating milling device 100.
In some examples, the main shaft 170 may be set to rotate at different rotation speeds according to the processing requirements of the oscillating rolling processing device 100 for different blanks 120, so as to drive the oscillating head 130 to rotate at different rotation speeds, thereby improving the applicability of the oscillating rolling processing device 100. In some examples, the rotational speed of the main shaft 170 may be between 50 rpm and 450 rpm, and in particular, the rotational speed of the main shaft 170 may be 150 rpm, 200 rpm, or 350 rpm.
In some examples, as shown in fig. 1, the pulsed power source 140 includes a brush 142, the brush 142 being in movable communication with the eccentric swash plate 160.
The pulse power source 140 includes a brush 142, and a pulse current generated from the pulse power source 140 flows to the eccentric swash plate 160 through the brush 142. The electric brush 142 is connected with the eccentric swash plate 160 in a sliding manner, so that the current loop is prevented from being influenced by the rotation of the eccentric swash plate 160, the current loop can be conducted when the swinging head 130 is in contact with the blank 120, the reliability of connection between the pulse power supply 140 and the eccentric swash plate 160 is improved, and the use reliability of the swinging rolling processing device 100 is further improved.
In some examples, the number of brushes 142 may be one or more.
In some examples, as shown in fig. 1, a bearing 164 is disposed within the opening 162, and one end of the wobble head 130 is coupled to the bearing 164.
The bearing 164 is arranged in the opening 162, and one end of the swinging head 130 is connected with the bearing 164, so that the swinging head 130 can rotate relative to the eccentric swash plate 160, the connection reliability between the swinging head 130 and the eccentric swash plate 160 is improved, the swinging head 130 is prevented from falling from the opening 162, and the use reliability of the swinging rolling processing device 100 is improved.
In some examples, the main shaft 170 is in insulated connection with the eccentric swash plate 160.
The main shaft 170 is in insulation connection with the eccentric swash plate 160, so that the pulse current sent by the pulse power supply 140 cannot flow to the main shaft 170 through the eccentric swash plate 160, the use safety of the swinging rolling processing device 100 is improved, the loss of the pulse current in the flowing process is reduced, and the energy consumption of the swinging rolling processing device 100 is reduced.
In some examples, a ceramic or rubber material may be disposed between the main shaft 170 and the eccentric swash plate 160 to achieve an insulating connection between the main shaft 170 and the eccentric swash plate 160.
In some examples, as shown in fig. 1, pulsed power supply 140 further includes a current launching device 144 and a waveform control device 146. The current emitting device 144 is used to emit a pulsed current. The waveform control device 146 is connected to the current emission device 144 for controlling the waveform of the pulse current.
The pulse power source 140 further comprises a current emitting device 144 and a waveform control device 146, and it is understood that the current emitting device 144 is used for emitting a pulse current, and the waveform control device 146 is used for controlling the waveform of the pulse current, so that the waveform control device 146 can control the pulse current with different waveforms to flow through the blank 120 according to the processing requirements of the swing rolling processing device 100 for different blanks 120, and the applicability of the swing rolling processing device 100 is improved.
In some examples, the frequency of the pulsed current is in a range of 50 hz to 12000 hz, the pulse width of the pulsed current is in a range of 10 microseconds to 25000 microseconds, the rms current of the pulsed current is in a range of 2 amps to 3000 amps, and the peak value of the pulsed current is in a range of 20 amps to 30000 amps.
In some examples, as shown in fig. 1, the oscillating roller compaction apparatus 100 further includes: a vibration exciter 180. The vibration exciter 180 is connected to the bearing member 110 in an insulated manner, and is used for driving the bearing member 110 to vibrate.
The oscillating rolling mill 100 further comprises an exciter 180, and it can be understood that the exciter 180 can be controlled to provide different frequencies of vibration according to the processing requirements of the oscillating rolling mill 100 for different blanks 120.
In some examples, the vibration exciter 180 has a vibration mode of a pulse wave, an amplitude of the pulse wave ranges from 0.2 mm to 1.2 mm, and a vibration frequency of the pulse wave ranges from 10 hz to 120 hz.
The vibration exciter 180 is in insulated connection with the bearing member 110, so that pulse current is prevented from flowing to the vibration exciter 180 through the bearing member 110, the use safety of the swinging rolling processing device 100 is improved, meanwhile, the loss of the pulse current in the flowing process is reduced, and the energy consumption of the swinging rolling processing device 100 is reduced.
In some examples, the exciter 180 may be connected to the carrier 110 through a ceramic or rubber material.
It can be understood that the blank 120 is placed in the bearing member 110, and the vibration exciter 180 drives the bearing member 110 to vibrate, so that the blank 120 also vibrates, thereby increasing the filling rate of the blank 120 in the bearing member 110, and further increasing the processing effect of the oscillating rolling processing device 100. Meanwhile, the vibration exciter 180 is arranged to drive the blank 120 to vibrate, so that the blank 120 can generate heat, the plastic stress of the blank 120 is further reduced, the friction resistance when the swinging head 130 rolls the blank is reduced, the plastic deformation capacity of the blank 120 is improved, the machining efficiency of the swinging rolling machining device 100 is improved, the machining effect of the swinging rolling machining device 100 on the blank 120 is improved, and the precision of parts is ensured.
In some examples, the number of the vibration exciters 180 may be one or more. The number of exciters 180 and carriers 110 may be the same or different.
In some examples, as shown in fig. 1, the oscillating roller compaction apparatus 100 also includes a table 190. The worktable 190 is connected to the carrier 110 in an insulated manner for supporting the carrier 110, and the driving member 150 is connected to the worktable 190.
The swing rolling processing device 100 further comprises a workbench 190, the workbench 190 is in insulation connection with the bearing piece 110, pulse current is prevented from flowing to the workbench 190, the use safety of the swing rolling processing device 100 is improved, loss of the pulse current in the flowing process is reduced, and the energy consumption of the swing rolling processing device 100 is reduced.
In some examples, the work table 190 may be connected to the carrier 110 by a material such as ceramic or rubber. In some examples, the table 190 may be made of ceramic or rubber, which improves the insulation effect between the table 190 and the carrier 110.
The bearing part 110 is supported by the workbench 190, and the driving part 150 is connected with the workbench 190, so that the driving stability of the driving part 150 for the bearing part 110 is improved, the phenomenon that the bearing part 110 is sent to shake or shift relative to the driving part 150 in the moving process is avoided, and the use reliability of the swing rolling processing device 100 is further improved.
In some examples, the axes of the spindle 170, the carrier 110, the table 190, and the drive 150 coincide with one another, improving the structural regularity of the oscillating roller compaction apparatus 100.
In a second aspect, as shown in fig. 2, based on the same inventive concept of the above method, an embodiment of the present application provides a method for controlling an oscillating rolling compaction processing apparatus, which is used for controlling the oscillating rolling compaction processing apparatus according to the first aspect, so that all the beneficial effects of the first aspect are achieved, and are not described herein again.
The control method of the swing rolling processing device comprises the following steps:
step S101, controlling a bearing piece to be close to a swinging head so as to enable a blank to be in contact with the swinging head;
step S102, controlling a pulse power supply to be started;
and step S103, controlling the swinging head to roll the blank.
And controlling the bearing piece to be close to the swinging head so that the swinging head is contacted with the blank. In some examples, after the oscillating head is in contact with the blank, the bearing piece can be controlled to continuously approach the oscillating head until the oscillating head reaches a preset pressing amount, so that the rolling effect of the oscillating head on the blank is improved, and the precision of a machined part is ensured.
And after the swinging head is contacted with the blank, the current is conducted in a backflow mode. The pulse power supply is controlled to be started, so that the pulse power supply is prevented from being started before the current loop is conducted, and the energy consumption of the swing rolling control device is reduced.
Specifically, the pulse power source is capable of generating a large amount of directionally floating free electrons in the blank after flowing through the blank. Free electrons collide with atoms of the blank, so that the kinetic energy of the atoms is increased, dislocation activation of the blank is promoted, the generation of a fracture cavity is inhibited, the plastic deformation resistance of the blank is reduced, the plastic deformation capacity of the blank is improved, the blank is easier to machine and form, and the service life of the bearing piece is prolonged.
Meanwhile, the pulse current flows through the blank, the heat of the blank can be improved, atoms in the blank can obtain enough kinetic energy under the action of the pulse current, so that the atoms leave the balance position, the diffusion capacity of the atoms is enhanced, the plastic deformation capacity of the blank is further improved, the machining efficiency of the swinging rolling machining device is improved, the machining effect of the swinging rolling machining device on the blank is improved, and the obtained part precision is ensured.
In addition, when the swinging head is in contact with the blank, the current loop can be automatically conducted, the pulse current can flow through the blank, the automation performance of the swinging rolling processing device is improved, and when the swinging head is separated from the blank, the pulse current cannot flow through the blank, so that the energy consumption of the swinging rolling processing device is reduced.
In some examples, after the step of controlling the carrier to approach the swing head to contact the blank with the swing head, the method further comprises:
and controlling a vibration exciter of the swinging and rolling processing device to be started.
After the blank contacts with the swinging head, the vibration exciter is controlled to be started, so that the situation that the vibration exciter is started before the swinging head contacts with the blank is avoided, the blank in the bearing piece overflows due to vibration, and the use reliability of the swinging rolling device is improved.
After the vibration exciter is started, the blank vibrates according to the preset frequency, the filling rate of the blank in the bearing piece is improved, and the machining effect of the swinging rolling machining device is further improved. Meanwhile, the vibration exciter is arranged to drive the blank to vibrate, so that the blank can generate heat, the plastic stress of the blank is further reduced, the friction resistance when the swinging head rolls the blank is reduced, and the machining efficiency of the swinging rolling machining device is improved.
Under the combined action of the pulse power supply and the vibration exciter, the plastic stress of the blank is further reduced, so that the blank is easier to machine and form, the plastic deformation capacity of the blank is improved, the machining effect of the swinging rolling machining device is improved, and the precision of parts is ensured.
In one embodiment of the present application, as shown in FIG. 1, an oscillating lamination machine 100 is provided. The oscillating rolling mill 100 includes a main shaft 170, an eccentric swash plate 160, a swing head 130, a pulse power source 140, a carrier 110, a table 190, and a driving member 150. The eccentric swash plate 160 is fixedly installed on the main shaft 170, and the swing head 130 is disposed above the carrier 110 for rolling the blank 120. The wobble head 130 is mounted on the eccentric swash plate 160 through a bearing 164. The blank 120 is plastically deformed by the rolling force of the head 130 to form a part.
The main shaft 170 is used for driving the oscillating head 130 to rotate according to a preset track, and the pulse power source 140 comprises a brush 142, and the brush 142 is in close sliding contact with the outer surface of the eccentric swash plate 160. The carrier 110 is used for accommodating the blank 120.
In some examples, the carrier 110 is a female mold. The bearing member 110 is connected to a table 190 through an exciter 180, and the table 190 is used to support the bearing member 110. The exciter 180 is used to provide low frequency vibration to the carrier 110.
The driving member 150 drives the table 190 to move closer to or away from the swing head 130, and in some examples, the driving member 150 is a cylinder. In some examples, different strokes of the cylinders may be controlled according to the processing requirements of the oscillating rolling processing device 100 for different blanks 120. Specifically, the stroke of the oil cylinder can be 250 mm, the pressure of the oil cylinder can be 50 MPa, and the feeding amount of the oil cylinder can be between 0.5 mm/rotation and 15 mm/rotation.
The eccentric swash plate 160 is connected with the main shaft 170 in an insulated manner, the eccentric swash plate 160 is electrically conductive with the oscillating head 130, and the bearing piece 110 is connected with the vibration exciter 180 in an insulated manner, so that the eccentric swash plate 160, the blank 120 and the bearing piece 110 can form a current loop. Meanwhile, the eccentric swash plate 160 is in insulation connection with the main shaft 170, and the bearing part 110 is in insulation connection with the vibration exciter 180, so that pulse current is prevented from flowing to the main shaft 170, the vibration exciter 180 or the workbench 190, the use safety of the swinging rolling processing device 100 is improved, the loss of the pulse current is reduced, and the energy consumption of the swinging rolling processing device 100 is reduced.
In some examples, the centerlines of the spindle 170, the carrier 110, the table 190, and the drive 150 coincide, improving the structural regularity of the oscillating roller compaction apparatus 100.
One output end of the pulse power source 140 is connected to the brush 142, and the other output end is connected to the carrier 110 through a waveform control device 146, and the waveform control device 146 is used for controlling the current emission device 144 to emit pulse currents with different waveforms.
Specifically, the pulse current output by the pulse power source 140 can flow through a current loop formed by the brush 142, the eccentric swash plate 160, the wobble head 130, the blank 120, the carrier 110 and the waveform control device 146. The pulse current flowing through the blank 120 is realized, the plastic deformation capacity of the blank 120 is improved, the blank 120 is more easily rolled and formed, the machining efficiency of the swinging rolling machining device 100 is improved, the service life of the bearing piece 110 is prolonged, the machining effect of the swinging rolling machining device 100 on the blank 120 is improved, and the obtained part precision is improved.
Specifically, taking the blank 120 as alloy structural steel and the overall dimension of the target part is Φ 60 × 30 as an example, the specific steps of this embodiment are as follows:
the blank 120 is placed in the cavity die and the blank 120 is fixed to the cavity die by a pressing plate to prevent the blank 120 from overflowing the cavity die. The control main shaft 170 drives the eccentric swash plate 160 and the swing head 130 to rotate, specifically, the rotation speed of the swing head 130 may be 50 rpm to 450 rpm, and the included angle α between the axis of the swing head 130 and the axis of the eccentric swash plate 160 may be 3 °.
The exciter 180 is activated to apply low frequency micro-amplitude vibration to the blank 120. The oil cylinder is controlled to move, the oil cylinder drives the workbench 190, the vibration exciter 180 and the female die to move together towards the direction close to the swinging head 130, when the swinging head 130 is tightly pressed on the surface of the blank 120, the pulse power supply 140 is started, the oil cylinder is controlled to continue to move towards the direction close to the swinging head 130 at a certain speed, the feeding amount of the oil cylinder can be 0.5 mm/rotation to 15 mm/rotation until the swinging head 130 reaches the initial pressing amount under the action of the pre-pressure.
After the rolling of the blank 120 is completed, the exciter 180, the pulse power source 140 and the swing head 130 are turned off to obtain the target part.
In some examples, the frequency of the pulse current output by the pulse power source 140 may be 100 hz, the pulse width of the pulse current may be 200 μ sec, the root mean square current of the pulse current may be 30 amps, the peak value of the pulse current may be 300 amps, the rotation speed of the wobble head 130 may be 150 rpm, the feeding amount of the cylinder may be 0.5 mm/rpm, the amplitude of the vibration waveform output by the vibration exciter 180 may be 0.2 mm, and the vibration frequency of the vibration waveform output by the vibration exciter 180 may be 20 hz. The swinging rolling processing is carried out under the process parameters, the deformation resistance of the obtained part is 325.33 MPa, and the maximum diameter d of the partmaxAnd a minimum diameter dminThe ratio of the ratios was 1.106.
In some examples, the frequency of the pulse current output by the pulse power supply 140 may be 1000 hz, the pulse width of the pulse current may be 2000 microseconds, the root mean square current of the pulse current may be 300 amperes, and the pulse currentThe peak value may be 3000 amperes, the rotation speed of the swing head 130 may be 250 revolutions per minute, the feeding amount of the oil cylinder may be 1.0 mm per revolution, the amplitude of the vibration waveform output by the vibration exciter 180 may be 0.7 mm, and the vibration frequency of the vibration waveform output by the vibration exciter 180 may be 70 hertz. The swinging rolling processing is carried out under the process parameters, the deformation resistance of the obtained part is 306.19 MPa, and the maximum diameter d of the partmaxAnd a minimum diameter dminThe ratio of (A) to (B) was 1.074.
In some examples, the frequency of the pulse current output by the pulse power source 140 may be 10000 hz, the pulse width of the pulse current may be 20000 μ sec, the root mean square current of the pulse current may be 3000 ampere, the peak value of the pulse current may be 30000 ampere, the rotation speed of the wobble head 130 may be 350 rpm, the feeding amount of the cylinder may be 1.5 mm/sec, the amplitude of the vibration waveform output by the vibration exciter 180 may be 1.2 mm, and the vibration frequency of the vibration waveform output by the vibration exciter 180 may be 120 hz. The swinging rolling processing is carried out under the process parameters, the deformation resistance of the obtained part is 287.62 MPa, and the maximum diameter d of the partmaxAnd a minimum diameter dminThe ratio of the ratio is 1.028.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An oscillating roller compaction machine comprising:
a carrier for receiving a blank;
the swinging head is arranged above the bearing piece and is used for rolling the blank in the bearing piece;
a pulse power supply connected with the wobble head and the carrier to form a current loop;
the driving piece is used for driving the bearing piece to be close to or far away from the swinging head so as to enable the blank to be in contact with or separated from the swinging head;
when the blank is contacted with the swinging head, the current loop is conducted, and when the blank is separated from the swinging head, the current loop is disconnected.
2. The oscillating roller compaction machine of claim 1 further comprising:
the eccentric swash plate is provided with an opening, an included angle is formed between the axis of the opening and the axis of the eccentric swash plate, and one end of the swinging head is arranged in the opening;
and the main shaft is connected with the eccentric swash plate and used for driving the eccentric swash plate to rotate.
3. The oscillating roller compaction machine of claim 2 wherein the pulsed power source comprises a brush in sliding connection with the eccentric swash plate.
4. The oscillating roller compaction machine of claim 2 wherein a bearing is disposed within the opening and one end of the head is connected to the bearing.
5. The oscillating roller compaction machine of claim 3 wherein the spindle is in insulated connection with the eccentric swash plate.
6. The oscillating roller compaction machine according to any one of claims 1 to 5 wherein the pulsed power supply further comprises:
a current emitting device for emitting a pulsed current;
and the waveform control device is connected with the current transmitting device and is used for controlling the waveform of the pulse current.
7. The oscillating roller compaction machine according to any one of claims 1 to 5, further comprising:
the vibration exciter is connected with the bearing part in an insulating mode and used for driving the bearing part to vibrate.
8. The oscillating roller compaction machine according to any one of claims 1 to 5, further comprising:
the workstation, the workstation with hold carrier insulated connection, be used for supporting hold carrier, the driving piece connect in the workstation.
9. A control method of an oscillating roller compaction machine according to any one of claims 1 to 8, the control method comprising:
controlling the bearing piece to be close to the swinging head so that the blank is in contact with the swinging head;
controlling the pulse power supply to be started;
and controlling the swinging head to roll the blank.
10. The method of controlling an oscillating roller compaction machine according to claim 9, further comprising, after the step of controlling the carrier to approach the oscillating head to bring the stock into contact with the oscillating head:
and controlling a vibration exciter of the swinging rolling processing device to be started.
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