CN110370102B - Method for processing special-shaped hole by ultrasonic impact - Google Patents
Method for processing special-shaped hole by ultrasonic impact Download PDFInfo
- Publication number
- CN110370102B CN110370102B CN201910626137.0A CN201910626137A CN110370102B CN 110370102 B CN110370102 B CN 110370102B CN 201910626137 A CN201910626137 A CN 201910626137A CN 110370102 B CN110370102 B CN 110370102B
- Authority
- CN
- China
- Prior art keywords
- workpiece
- machined
- special
- ultrasonic
- machining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
Abstract
The invention relates to a method for processing a special-shaped hole by ultrasonic impact, which is characterized in that a workpiece to be processed is processed by a first feeding pressure in the processing process, and when the residual processing amount W of the workpiece to be processed is less than the processing amount W1When the preset value is reached, the outlet of the special-shaped hole is machined in the workpiece to be machined through the second feeding pressure, and the penetration of the special-shaped hole of the workpiece to be machined is achieved. Because the second feeding pressure is smaller than the first feeding pressure, the edge breakage phenomenon of the workpiece to be machined at the inlet and the outlet of the special-shaped hole can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a method for machining a special-shaped hole by ultrasonic impact.
Background
Ultrasonic machining is a shaping method for machining hard and brittle materials by abrasive suspensions using ultrasonic vibration of the end face of a tool head. Is suitable for processing hard and brittle materials with excellent physical, chemical and mechanical properties such as optical glass, ceramics, silicon carbide and the like.
When the ultrasonic machining is carried out, suspension liquid mixed by liquid and abrasive materials is added between a tool head and a workpiece, pressure is applied in the vibration direction of the tool head, ultrasonic frequency electric oscillation generated by an ultrasonic generator is converted into mechanical vibration of ultrasonic frequency through an ultrasonic transducer, an amplitude transformer amplifies the amplitude and transmits the amplified amplitude to the tool head, the end face of the tool head is driven to carry out ultrasonic vibration, the suspended abrasive materials in the suspension liquid are forced to continuously impact and polish the machined surface at a high speed under the ultrasonic vibration of the tool head, and materials in a machining area are crushed into fine particles and are beaten from the materials.
When the ultrasonic processing mode is used for impact processing of a special-shaped hole on a hard and brittle material (such as glass), edge breakage is easily generated at an outlet of the special-shaped hole formed by the hard and brittle material.
Disclosure of Invention
In view of the above, it is necessary to provide a method for ultrasonic impact machining of a special-shaped hole, which can effectively avoid the occurrence of edge chipping.
A method for processing a special-shaped hole by ultrasonic impact comprises the following steps:
placing a workpiece to be processed at a processing station;
supplying abrasive to the machining area;
starting an ultrasonic generator, wherein the ultrasonic generator generates ultrasonic frequency electric energy, an ultrasonic transducer converts the ultrasonic frequency electric energy into mechanical energy of ultrasonic vibration, and an amplitude transformer amplifies the amplitude and gathers the energy;
the special-shaped tool head at the tail end of the amplitude transformer is fed downwards in the direction close to the workpiece to be machined through the first feeding pressure, and the workpiece to be machined is machined;
when the residual machining amount W of the workpiece to be machined1When a preset value is reached, the lower pressure borne by the ultrasonic transducer and the amplitude transformer is adjusted, so that the first feeding pressure is adjusted to be a second feeding pressure, and the second feeding pressure is smaller than the first feeding pressure;
enabling the special-shaped tool head at the tail end of the amplitude transformer to be close to the workpiece to be machined through second feeding pressure, and ensuring that mechanical energy of the end face of the special-shaped tool head enables the abrasive to impact the workpiece to be machined so as to machine an outlet of a special-shaped hole in the workpiece to be machined and form the special-shaped hole penetrating through the workpiece to be machined.
In one embodiment, the step of placing the workpiece to be machined in a machining station, the machining station being located on a fixture; or
The method comprises the following steps of placing a workpiece to be processed in a processing station, wherein the processing station is positioned on a workbench.
In one embodiment, the first feed pressure ranges from 70kPa to 200 kPa; and/or
The second feed pressure is in the range of 60kPa to 150 kPa.
In one embodiment, the residual working amount W1The preset value range of (A) is 0.1 mm-0.5 mm.
In one embodiment, the residual working amount W1The preset value range of (A) is 0.2 mm-0.3 mm.
The method for processing the special-shaped hole by ultrasonic impact has at least the following advantages:
during the processing, the workpiece to be processed is processed by the first feeding pressure until the residual processing amount W of the workpiece to be processed1And when the preset value is reached, the first feeding pressure is adjusted to be a second feeding pressure, the second feeding pressure is smaller than the first feeding pressure, and the second feeding pressure is used for machining an outlet of the special-shaped hole in the workpiece to be machined, so that the special-shaped hole of the workpiece to be machined can penetrate through the outlet. Because the second feeding pressure is smaller than the first feeding pressure, the edge breakage phenomenon of the workpiece to be machined at the outlet of the special-shaped hole can be effectively avoided.
A method for processing a special-shaped hole by ultrasonic impact comprises the following steps:
placing a workpiece to be processed at a processing station;
supplying abrasive to the machining area;
starting an ultrasonic generator, wherein the ultrasonic generator generates ultrasonic frequency electric energy, an ultrasonic transducer converts the ultrasonic frequency electric energy into mechanical energy of ultrasonic vibration, and an amplitude transformer amplifies the amplitude and gathers the energy;
enabling the special-shaped tool head at the tail end of the amplitude transformer to move downwards in the direction close to the workpiece to be machined by virtue of first feeding pressure until the mechanical energy of the end surface of the special-shaped tool head enables the grinding material to impact the workpiece to be machined so as to machine an inlet of a special-shaped hole on the surface of the workpiece to be machined;
adjusting the down pressure of the ultrasonic transducer and the amplitude transformer to increase the first feeding pressure to a second feeding pressure, and continuously processing the workpiece to be processed;
when the residual machining amount W of the workpiece to be machined1When the preset value is reached, the lower pressure borne by the ultrasonic transducer and the amplitude transformer is adjusted, so that the second feeding pressure is reduced to a third feeding pressure;
enabling the special-shaped tool head at the tail end of the amplitude transformer to be close to the workpiece to be machined through third feeding pressure, and ensuring that mechanical energy of the end face of the special-shaped tool head enables abrasive materials to impact the workpiece to be machined so as to machine an outlet of a special-shaped hole in the workpiece to be machined and form the special-shaped hole penetrating through the workpiece to be machined.
In one embodiment, the step of placing the workpiece to be machined in a machining station, the machining station being located on a fixture; or
The method comprises the following steps of placing a workpiece to be processed in a processing station, wherein the processing station is positioned on a workbench.
In one embodiment, the first feed pressure ranges from 60kPa to 200 kPa; and/or
The second feed pressure ranges from 200kPa to 400 kPa; and/or
The third feed pressure is in the range of 60kPa to 150 kPa.
In one embodiment, the residual working amount W1The preset value range of (A) is 0.1 mm-0.5 mm.
In one embodiment, the residual working amount W1The preset value range of (A) is 0.2 mm-0.3 mm.
The method for processing the special-shaped hole by ultrasonic impact has at least the following advantages:
during machining, machining a workpiece to be machined by using a first feeding pressure so as to form an inlet of a special-shaped hole on the surface of the workpiece to be machined; continuously pressing the special-shaped tool head through the second feeding pressure, wherein the grinding material impacts the workpiece to be machined through the mechanical energy of the end face of the special-shaped tool head, and continuously machining a special-shaped hole on the workpiece to be machined; when the residual machining amount W of the workpiece to be machined1When the preset value is reached, the outlet of the special-shaped hole is machined in the workpiece to be machined through the third feeding pressure, and the penetration of the special-shaped hole of the workpiece to be machined is achieved. Because first feed pressure and third feed pressure are less than second feed pressure, consequently can effectively avoid treating that the work piece produces at the entry and the exit in dysmorphism hole and collapse the limit phenomenon, treat the mid portion processing of processing work piece through second feed pressure, can accelerate the process velocity under the prerequisite of avoiding collapsing the limit, improve machining efficiency.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for ultrasonic impact machining of a shaped hole according to one embodiment;
fig. 2 is a schematic flow chart of a method for ultrasonic impact machining of a profiled hole in another embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Referring to fig. 1, in an embodiment of the method for ultrasonic impact machining of a special-shaped hole, a workpiece to be machined is subjected to special-shaped hole machining mainly in an ultrasonic mode, and at least an edge breakage phenomenon at an outlet of the special-shaped hole can be prevented. Specifically, the workpiece to be processed may be a workpiece made of a difficult-to-process material such as diamond, ceramic, agate, jade, marble, quartz, glass, or a sintered permanent magnet. The irregular holes can be regular-shaped through holes with triangular, quadrangular (such as square, rectangle or rhombus) or pentagonal cross sections, and can also be irregular-shaped through holes with irregular cross sections.
The method for processing the special-shaped hole by ultrasonic impact specifically comprises the following steps:
and step S110, placing the workpiece to be processed at a processing position. For example, the machining station may be located on a fixture that is primarily used to place the workpiece to be machined. Of course, in other embodiments, the machining position may also be located on the workbench, and the workpiece to be machined is placed on the workbench to perform the special-shaped hole machining.
Step S120 supplies abrasive to the machining region. For example, simple ultrasonic machining, abrasives can be manually transported and replaced. Namely, before machining, the working fluid suspending the abrasive is poured in a machining area, and the tool head is lifted and the abrasive is supplemented at regular time in the machining process. Of course, the abrasive suspension can also be stirred by means of a centrifugal pump and poured into the processing area. For deeper work surfaces, the tool head should be raised regularly to facilitate the replacement and replenishment of the abrasive. For large-scale ultrasonic machining machines, a flow pump is mostly adopted to automatically supply abrasive suspension to a machining area, and the quality and the circulation are good.
Furthermore, the working solution can be water, has the best effect and is most common, and is economical and practical. Kerosene or engine oil may also be used as the working fluid in order to improve the surface quality. The abrasive may be diamond abrasive, boron carbide abrasive, silicon carbide abrasive, alumina abrasive, or the like. The particle size of the abrasive is selected according to the requirements such as processing productivity and precision, and the productivity of large particles is high, but the processing precision and the surface roughness are poor.
Step S130, the ultrasonic generator is started, the ultrasonic generator generates ultrasonic frequency electric energy, the ultrasonic transducer converts the ultrasonic frequency electric energy into mechanical energy of ultrasonic vibration, and the amplitude transformer performs amplitude amplification and energy collection. An ultrasonic generator, also known as an ultrasonic power supply, is a device used to generate and provide ultrasonic frequency electrical energy to an ultrasonic transducer. Because the amplitude of the vibration generated by the radiating surface of the ultrasonic transducer is small, when the working frequency is in the range of 20kHz, the amplitude of the radiating surface of the ultrasonic transducer is only a few micrometers, and the amplitude required in a large number of high-intensity ultrasonic applications such as ultrasonic processing and the like is about tens of micrometers to hundreds of micrometers. Therefore, the displacement and the movement speed of the mechanical vibration mass must be amplified by the action of the amplitude transformer, and the ultrasonic energy must be focused on a small area to generate the energy gathering effect.
Wherein the order of the steps S120 and S130 may be reversed.
And step S140, the special-shaped tool head at the tail end of the amplitude transformer is downwards moved to be close to the workpiece to be machined through the first feeding pressure until the mechanical energy of the end surface of the special-shaped tool head enables the grinding material to impact the workpiece to be machined, so that the inlet of the special-shaped hole is machined in the surface of the workpiece to be machined. In the processing process, the tool head has a proper feeding pressure for a workpiece to be processed, and when the pressure is too small, the gap between the cross section of the tool head and the processing surface of the workpiece to be processed is increased, so that the impact force and the striking depth of the abrasive material on the workpiece to be processed are weakened; when the pressure is too high, the gap between the tool head and the workpiece to be machined is reduced, and the abrasive and the working fluid cannot be smoothly circulated and updated, which lowers the productivity. Therefore, the first feed pressure is in the range of 60kPa to 200kPa in general. Further, the first feed pressure may be in a range of 70kPa to 150kPa, and productivity may be ensured while avoiding occurrence of edge chipping at the entrance of the workpiece to be processed. It should be noted that the term "pressure" in the feed pressure referred to herein is synonymous with pressure in physics. That is, the feed pressure is related to the area of the profile tool head and also to the magnitude of the pressure value of the downward pressing.
And S150, adjusting the down pressure of the ultrasonic transducer and the amplitude transformer to increase the first feeding pressure to a second feeding pressure, and continuously processing the workpiece to be processed. After the inlet of the special-shaped hole is machined on the surface of the workpiece to be machined and before the outlet of the special-shaped hole is machined, the probability of edge breakage of the workpiece to be machined is low, and therefore the workpiece to be machined can be machined by adopting high feeding pressure. Specifically, the second feed pressure is in the range of 200kPa to 400kPa, without causing a chipping phenomenon, while improving productivity.
Step S160, when the residual processing amount W of the workpiece to be processed1And when the preset value is reached, the lower pressure borne by the ultrasonic transducer and the amplitude transformer is adjusted, so that the second feeding pressure is reduced to a third feeding pressure. As described above, the edge chipping is easily generated at the outlet of the shaped hole of the workpiece to be machined, and therefore, when the workpiece to be machined is quickly penetrated but not penetrated, the down pressure needs to be reduced. Specifically, the third feeding pressure is in the range of 60kPa to 150kPa, which can not cause edge breakage phenomenon, but also ensure the productivity.
Further, the magnitude of the first feed pressure may be equal to the magnitude of the third feed pressure. Therefore, the first feed pressure and the third feed pressure are convenient to control in the actual operation process. Of course, in other embodiments, the first feed pressure may not be equal to the third feed pressure.
Wherein the residual processing amount W of the workpiece to be processed1Total thickness W of the workpiece to be machinedGeneral assemblyThe processed quantity W of the workpiece to be processed2The processed quantity W of the workpiece to be processed2The feed W of the ultrasonic transducer3. Therefore, the feed amount W of the ultrasonic transducer can be calculated3Obtaining the residual processing amount W of the workpiece to be processed1. Specifically, the remaining working amount W1The preset value range of (A) is 0.1 mm-0.5 mm. Further, the remaining processing amount W1The preset value range of (A) is 0.2 mm-0.3 mm. That is, when the workpiece to be machined has a residual machining amount W1During operation, the pressure is adjusted to prevent edge breakage.
And S170, enabling the special-shaped tool head at the tail end of the amplitude transformer to be close to the workpiece to be machined through third feeding pressure, and ensuring that the mechanical energy of the end face of the special-shaped tool head enables the grinding material to impact the workpiece to be machined so as to machine an outlet of the special-shaped hole in the workpiece to be machined and form the special-shaped hole penetrating through the workpiece to be machined.
When the special-shaped tool head at the tail end of the amplitude transformer is fed downwards in the direction close to the workpiece to be processed by the first feeding pressure until the mechanical vibration of the end surface of the special-shaped tool headWhen the abrasive material is impacted on the workpiece to be processed, the special-shaped tool head can impact the workpiece to be processed in an ultrasonic mode to form an inlet of a special-shaped hole on the surface of the workpiece to be processed. And increasing the first feeding pressure to be the second feeding pressure, and continuously processing the workpiece to be processed. When the residual machining amount W of the workpiece to be machined1When the preset value is reached, the lower pressure borne by the amplitude transformer is adjusted to reduce the second feeding pressure to a third feeding pressure, the head of the special-shaped tool positioned at the tail end of the amplitude transformer is close to the workpiece to be machined through the third feeding pressure, and the mechanical vibration of the end face of the special-shaped tool head is ensured to enable the grinding materials to impact the workpiece to be machined, so that an outlet of a special-shaped hole is machined in the workpiece to be machined, and the special-shaped hole penetrating through the workpiece to be machined is formed.
During the machining, the workpiece to be machined is machined by the first feed pressure so as to form an inlet of the special-shaped hole on the surface of the workpiece to be machined. And continuously pressing the special-shaped tool head through the second feeding pressure, wherein the mechanical energy of the end surface of the special-shaped tool head enables the grinding material to impact the workpiece to be machined, and the special-shaped hole is continuously machined on the workpiece to be machined. When the residual machining amount W of the workpiece to be machined1When the preset value is reached, the outlet of the special-shaped hole is machined in the workpiece to be machined through the third feeding pressure, and the penetration of the special-shaped hole of the workpiece to be machined is achieved. Because first feed pressure and third feed pressure are less than second feed pressure, consequently can effectively avoid treating that the work piece produces at the entry and the exit in dysmorphism hole and collapse the limit phenomenon, treat the mid portion processing of processing work piece through second feed pressure, can accelerate the process velocity under the prerequisite of avoiding collapsing the limit, improve machining efficiency.
Referring to fig. 2, another embodiment of the method for ultrasonic impact machining of a special-shaped hole is to mainly use ultrasonic to machine the special-shaped hole on a workpiece to be machined, and at least to ensure that the entrance and exit of the special-shaped hole are not broken. Specifically, the workpiece to be processed may be a workpiece made of a difficult-to-process material such as diamond, ceramic, agate, jade, marble, quartz, glass, or a sintered permanent magnet. The irregular holes can be regular-shaped through holes with triangular, quadrangular (such as square, rectangle or rhombus) or pentagonal cross sections, and can also be irregular-shaped through holes with irregular cross sections.
The method for processing the special-shaped hole by ultrasonic impact specifically comprises the following steps:
and step S210, placing the workpiece to be processed at a processing position. For example, the machining station may be located on a fixture that is primarily used to place the workpiece to be machined. Of course, in other embodiments, the machining position may also be located on the workbench, and the workpiece to be machined is placed on the workbench to perform the special-shaped hole machining.
Step S220 supplies abrasive to the processing region. For example, simple ultrasonic machining, abrasives can be manually transported and replaced. Namely, before machining, the working fluid suspending the abrasive is poured in a machining area, and the tool head is lifted and the abrasive is supplemented at regular time in the machining process. Of course, the abrasive suspension can also be stirred by means of a centrifugal pump and poured into the processing area. For deeper work surfaces, the tool head should be raised regularly to facilitate the replacement and replenishment of the abrasive. For large-scale ultrasonic machining machines, a flow pump is mostly adopted to automatically supply abrasive suspension to a machining area, and the quality and the circulation are good.
Furthermore, the working solution can be water, has the best effect and is most common, and is economical and practical. Kerosene or engine oil may also be used as the working fluid in order to improve the surface quality. The abrasive may be diamond abrasive, boron carbide abrasive, silicon carbide abrasive, alumina abrasive, or the like. The particle size of the abrasive is selected according to the requirements such as processing productivity and precision, and the productivity of large particles is high, but the processing precision and the surface roughness are poor.
And step S230, starting an ultrasonic generator, wherein the ultrasonic generator generates ultrasonic frequency electric energy, the ultrasonic transducer converts the ultrasonic frequency electric energy into mechanical energy of ultrasonic vibration, and the amplitude transformer amplifies the amplitude and gathers the energy. An ultrasonic generator, also known as an ultrasonic power supply, is a device used to generate and provide ultrasonic frequency electrical energy to an ultrasonic transducer. Because the amplitude of the vibration generated by the radiating surface of the ultrasonic transducer is small, when the working frequency is in the range of 20kHz, the amplitude of the radiating surface of the ultrasonic transducer is only a few micrometers, and the amplitude required in a large number of high-intensity ultrasonic applications such as ultrasonic processing and the like is about tens of micrometers to hundreds of micrometers. Therefore, the displacement and the movement speed of the mechanical vibration mass must be amplified by the action of the amplitude transformer, and the ultrasonic energy must be focused on a small area to generate the energy gathering effect.
Wherein the order of the steps S220 and S230 may be reversed.
And S240, enabling the special-shaped tool head at the tail end of the amplitude transformer to move downwards in the direction close to the workpiece to be machined through the first feeding pressure, and machining the workpiece to be machined. In the processing process, the tool head has a proper feeding pressure for a workpiece to be processed, and when the pressure is too small, the gap between the cross section of the tool head and the processing surface of the workpiece to be processed is increased, so that the impact force and the striking depth of the abrasive material on the workpiece to be processed are weakened; when the pressure is too high, the gap between the tool head and the workpiece to be machined is reduced, and the abrasive and the working fluid cannot be smoothly circulated and updated, which lowers the productivity. Therefore, the first feed pressure is in the range of 70kPa to 200kPa in general. Further, the first feed pressure may be in a range of 70kPa to 150kPa, and productivity may be ensured while avoiding occurrence of edge chipping at the entrance of the workpiece to be processed.
Step S250, when the residual machining amount W of the workpiece to be machined1And when the preset value is reached, adjusting the down pressure borne by the ultrasonic transducer and the amplitude transformer to ensure that the first feeding pressure is adjusted to be a second feeding pressure, wherein the second feeding pressure is smaller than the first feeding pressure. As described above, the edge chipping is easily generated at the outlet of the shaped hole of the workpiece to be machined, and therefore, when the workpiece to be machined is quickly penetrated but not penetrated, the down pressure needs to be reduced. Specifically, the second feeding pressure is in the range of 60kPa to 150kPa, which can not cause edge breakage phenomenon, but can ensure the production rate.
Wherein the residual processing amount W of the workpiece to be processed1Total thickness W of the workpiece to be machinedGeneral assemblyThe processed quantity W of the workpiece to be processed2The processed quantity W of the workpiece to be processed2The feed W of the ultrasonic transducer3. Therefore, the feed amount W of the ultrasonic transducer can be calculated3Obtaining a workpiece to be machinedResidual working amount W of1. Specifically, the remaining working amount W1The preset value range of (A) is 0.1 mm-0.5 mm. Further, the remaining processing amount W1The preset value range of (A) is 0.2 mm-0.3 mm. That is, when the workpiece to be machined has a residual machining amount W1During operation, the pressure is adjusted to prevent edge breakage.
And step S260, enabling the special-shaped tool head at the tail end of the amplitude transformer to approach the workpiece to be machined through second feeding pressure, and ensuring that the mechanical energy of the end face of the special-shaped tool head enables the abrasive to impact the workpiece to be machined so as to machine an outlet of a special-shaped hole in the workpiece to be machined and form the special-shaped hole penetrating through the workpiece to be machined.
The method for processing the special-shaped hole by ultrasonic impact has at least the following advantages:
during the processing, the workpiece to be processed is processed by the first feeding pressure until the residual processing amount W of the workpiece to be processed1And when the preset value is reached, the first feeding pressure is adjusted to be a second feeding pressure, the second feeding pressure is smaller than the first feeding pressure, and the second feeding pressure is used for machining an outlet of the special-shaped hole in the workpiece to be machined, so that the special-shaped hole of the workpiece to be machined can penetrate through the outlet. Because the second feeding pressure is smaller than the first feeding pressure, the edge breakage phenomenon of the workpiece to be machined at the outlet of the special-shaped hole can be effectively avoided.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for processing a special-shaped hole by ultrasonic impact is characterized by comprising the following steps:
placing a workpiece to be processed at a processing station;
supplying abrasive to the machining area;
starting an ultrasonic generator, wherein the ultrasonic generator generates ultrasonic frequency electric energy, an ultrasonic transducer converts the ultrasonic frequency electric energy into mechanical energy of ultrasonic vibration, and an amplitude transformer amplifies the amplitude and gathers the energy;
the special-shaped tool head at the tail end of the amplitude transformer is fed downwards in the direction close to the workpiece to be machined through the first feeding pressure, and the workpiece to be machined is machined;
when the residual machining amount W of the workpiece to be machined1When a preset value is reached, the lower pressure borne by the ultrasonic transducer and the amplitude transformer is adjusted, so that the first feeding pressure is adjusted to be a second feeding pressure, and the second feeding pressure is smaller than the first feeding pressure;
enabling the special-shaped tool head at the tail end of the amplitude transformer to be close to the workpiece to be machined through second feeding pressure, and ensuring that mechanical energy of the end face of the special-shaped tool head enables the abrasive to impact the workpiece to be machined so as to machine an outlet of a special-shaped hole in the workpiece to be machined and form the special-shaped hole penetrating through the workpiece to be machined.
2. The method of ultrasonic impact machining of a profiled hole as claimed in claim 1, characterized by the steps of placing the workpiece to be machined in a machining station located on a fixture; or
The method comprises the following steps of placing a workpiece to be processed in a processing station, wherein the processing station is positioned on a workbench.
3. The method of ultrasonic impact machining of a profiled hole according to claim 1, characterized in that the first feed pressure is in the range of 70 kPa-200 kPa; and/or
The second feed pressure is in the range of 60kPa to 150 kPa.
4. The method of ultrasonic impact machining of a shaped hole according to any one of claims 1 to 3, characterized in that the residual machining amount W1The preset value range of (A) is 0.1 mm-0.5 mm.
5. The method of ultrasonic impact machining of a shaped hole according to claim 4, characterized in that the residual machining amount W1The preset value range of (A) is 0.2 mm-0.3 mm.
6. A method for processing a special-shaped hole by ultrasonic impact is characterized by comprising the following steps:
placing a workpiece to be processed at a processing station;
supplying abrasive to the machining area;
starting an ultrasonic generator, wherein the ultrasonic generator generates ultrasonic frequency electric energy, an ultrasonic transducer converts the ultrasonic frequency electric energy into mechanical energy of ultrasonic vibration, and an amplitude transformer amplifies the amplitude and gathers the energy;
enabling the special-shaped tool head at the tail end of the amplitude transformer to move downwards in the direction close to the workpiece to be machined by virtue of first feeding pressure until the mechanical energy of the end surface of the special-shaped tool head enables the grinding material to impact the workpiece to be machined so as to machine an inlet of a special-shaped hole on the surface of the workpiece to be machined;
adjusting the down pressure of the ultrasonic transducer and the amplitude transformer to increase the first feeding pressure to a second feeding pressure, and continuously processing the workpiece to be processed;
when the residual machining amount W of the workpiece to be machined1When the preset value is reached, the lower pressure borne by the ultrasonic transducer and the amplitude transformer is adjusted, so that the second feeding pressure is reduced to a third feeding pressure;
enabling the special-shaped tool head at the tail end of the amplitude transformer to be close to the workpiece to be machined through third feeding pressure, and ensuring that mechanical energy of the end face of the special-shaped tool head enables abrasive materials to impact the workpiece to be machined so as to machine an outlet of a special-shaped hole in the workpiece to be machined and form the special-shaped hole penetrating through the workpiece to be machined.
7. The method of ultrasonic impact machining of a profiled hole as claimed in claim 6, characterized by the steps of placing the workpiece to be machined in a machining station located on a fixture; or
The method comprises the following steps of placing a workpiece to be processed in a processing station, wherein the processing station is positioned on a workbench.
8. The method of ultrasonic impact machining of a profiled hole according to claim 6, characterized in that the first feed pressure is in the range of 60 kPa-200 kPa; and/or
The second feed pressure ranges from 200kPa to 400 kPa; and/or
The third feed pressure is in the range of 60kPa to 150 kPa.
9. The method of ultrasonic impact machining of a shaped hole according to any one of claims 6 to 8, characterized in that the residual machining amount W1The preset value range of (A) is 0.1 mm-0.5 mm.
10. The method of ultrasonic impact machining of a shaped hole according to claim 9, characterized in that the residual machining amount W is1The preset value range of (A) is 0.2 mm-0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910626137.0A CN110370102B (en) | 2019-07-11 | 2019-07-11 | Method for processing special-shaped hole by ultrasonic impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910626137.0A CN110370102B (en) | 2019-07-11 | 2019-07-11 | Method for processing special-shaped hole by ultrasonic impact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110370102A CN110370102A (en) | 2019-10-25 |
| CN110370102B true CN110370102B (en) | 2021-07-30 |
Family
ID=68252731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910626137.0A Active CN110370102B (en) | 2019-07-11 | 2019-07-11 | Method for processing special-shaped hole by ultrasonic impact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110370102B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002307266A (en) * | 2001-04-12 | 2002-10-23 | Matsushita Electric Ind Co Ltd | Ultrasonic processing method and device |
| CN101069953A (en) * | 2006-05-08 | 2007-11-14 | 上海伟钊光学科技有限公司 | Optical lens supersonic processing device |
| CN102729101A (en) * | 2012-06-22 | 2012-10-17 | 青岛理工大学 | Solid particle grinding fluid combined machining process and device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118369A (en) * | 1982-12-27 | 1984-07-09 | Toshiba Corp | Manufacture of diaphragm |
| JPS60170804A (en) * | 1984-02-16 | 1985-09-04 | Asahi Glass Co Ltd | Manufacture of optical fiber |
| JPS60186366A (en) * | 1984-03-02 | 1985-09-21 | Hitachi Ltd | Ultrasonic machining device |
| JP2001001246A (en) * | 1999-06-17 | 2001-01-09 | Murata Mfg Co Ltd | Drilling method and drilling device |
| CN2875698Y (en) * | 2006-04-04 | 2007-03-07 | 杭州电子科技大学 | Laminated vibration composite processing device using abrasive material |
| CN103302119A (en) * | 2013-07-11 | 2013-09-18 | 安徽振兴拉丝模有限公司 | Hole-shaped structural polycrystalline diamond drawing die and machining method thereof |
| KR101778707B1 (en) * | 2017-01-12 | 2017-09-14 | 단국대학교 산학협력단 | Apparatus for controling peening position in ultrasonic internal surface peenigin system |
| CN109227232B (en) * | 2018-10-09 | 2020-01-14 | 安徽省旌德德维机械有限公司 | Ultrasonic grinding and polishing device and using method thereof |
| CN109571159B (en) * | 2019-01-02 | 2021-04-02 | 南京航空航天大学 | Free abrasive material micro-ultrasonic machining device and feed adjusting method |
-
2019
- 2019-07-11 CN CN201910626137.0A patent/CN110370102B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002307266A (en) * | 2001-04-12 | 2002-10-23 | Matsushita Electric Ind Co Ltd | Ultrasonic processing method and device |
| CN101069953A (en) * | 2006-05-08 | 2007-11-14 | 上海伟钊光学科技有限公司 | Optical lens supersonic processing device |
| CN102729101A (en) * | 2012-06-22 | 2012-10-17 | 青岛理工大学 | Solid particle grinding fluid combined machining process and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110370102A (en) | 2019-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9751142B2 (en) | High-frequency-vibration-assisted electrolytic grinding method and device therefor | |
| CN101745846A (en) | Grinding material vibration porous deburring process | |
| US5655956A (en) | Rotary ultrasonic grinding apparatus and process | |
| Zhang et al. | The mechanism of material removal in ultrasonic drilling of engineering ceramics | |
| CN102091975A (en) | Magnetorheological polishing method for free-form surface of mould | |
| CN110370102B (en) | Method for processing special-shaped hole by ultrasonic impact | |
| Toh | The use of ultrasonic cavitation peening to improve micro-burr-free surfaces | |
| CN110253348B (en) | Method for processing special-shaped hole by ultrasonic impact | |
| CN111485267A (en) | Hard alloy strengthening treatment method | |
| CN110340748A (en) | A kind of rotary ultrasonic method processes the method and device of micro- hemisphere cavity plate array | |
| CN112548339B (en) | Ultrasonic laser mechanical composite machining method, ultrasonic vibration clamp, machine tool and laser | |
| CN105643375B (en) | A kind of high acoustic density list slot vacuum mixing immersion ultrasonic surface treatment device | |
| JPWO2016098824A1 (en) | Glass plate chamfering apparatus, glass plate chamfering method, and glass plate manufacturing method | |
| CN110270894B (en) | Method for processing axisymmetric through hole by ultrasonic impact | |
| JP6145548B1 (en) | Chamfering grinding method and chamfering grinding apparatus | |
| CN102264515A (en) | Workpiece for frame gang saw, method for cutting the workpiece, and product cut by the method | |
| KR930012261B1 (en) | High frequency vibrational polishing | |
| CN110270893A (en) | The method in the processing profiled hole of ultrasonic impact | |
| Kumar et al. | Experimental investigation into micro ultrasonic machining of quartz | |
| JP5352892B2 (en) | Grinding method and grinding apparatus | |
| CN2478726Y (en) | Low-frequency impact grinding hard brittle matterial shaping machine | |
| US11904400B2 (en) | Electrochemical discharge-enabled micro-grinding process for micro-components of silicon-based materials | |
| Patra et al. | Fabrication of an array of square micro-holes on glass using ultrasonic machining | |
| JP4126377B2 (en) | Diamond processing method | |
| CN104148994B (en) | A kind of ultrasonic vibrating machining method of microwave ferrite material Small-deep Hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200228 Address after: 510663 the first and second floors of gate machine building (Block C), Pinyao Electronic Industrial Park, No. 8, Yuner Road, south of Science City, Guangzhou high tech Industrial Development Zone, Guangdong Province Applicant after: CONPROFE TECHNOLOGY GROUP Co.,Ltd. Applicant after: SMARTGUY INTELLIGENT EQUIPMENT Co.,Ltd. GUANGZHOU BRANCH Address before: 510663 The first, second and third floors of the Portal Machine Building (Block C) of Product Yao Electronic Industry Park, No. 8, Nanyun Road, Science City, Guangzhou High-tech Industrial Development Zone, Guangzhou, Guangdong Province Applicant before: CONPROFE GREEN TOOLS Co.,Ltd. Applicant before: CONPROFE TECHNOLOGY GROUP Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |