Ultrasonic knife handle and ultrasonic machining equipment

Abstract

The utility model relates to an ultrasonic knife handle and ultrasonic machining equipment. The ultrasonic knife handle comprises a knife handle body. The main shell is rotationally arranged on the periphery of the knife handle body in a sleeving mode through a bearing to form a main shell cavity, and the main shell cavity is used for containing a conductive assembly arranged on the knife handle body in a sleeving mode and an electric brush in sliding fit with the conductive assembly; the main shell cavity is communicated with the external environment; the receiving seat is mounted on the outer side of the main shell, a first channel is formed in the receiving seat, and the first channel is communicated with an external cooling air source; the receiving seat is used for installing a power utilization side connecting end electrically connected with the electric brush; and the first channel is communicated with the main shell cavity to form a cooling channel. Through the configuration, the cooling channel of the ultrasonic knife handle can fully cool the electric brush and the conductive assembly which are seriously heated, and unstable electric transmission caused by too high rotating speed is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of machine tools, and in particular to an ultrasonic tool holder and an ultrasonic machining device. Background Art

[0002] In the field of machine tool processing, ultrasonic processing equipment, especially the transducer of its ultrasonic cutting tool handle, will generate a lot of heat during the process of rotating and matching the brush and slip ring to form an electrical connection. In order to dissipate the heat of these components in time and ensure that these components are in an ideal operating environment, various manufacturers have designed various cooling solutions.

[0003] CN117862947A discloses an externally cooled to internally cooled tool holder that supports automatic tool changing function, but does not involve the cooling of the power transmission mechanism, and requires a dedicated fixed seat to accommodate the cooling channel; some existing technologies also set a central cooling channel in the center of the tool holder, which is connected to an external cooling source through the center of the spindle, but is only for cooling the tool and workpiece, and does not take into account the cooling of heat-generating structures such as power transmission. Utility Model Content

[0004] In order to overcome the above problems of the prior art, the first aspect of the present application proposes an ultrasonic tool handle, which comprises:

[0005] The handle body;

[0006] A main housing is rotatably sleeved on the outer periphery of the handle body through a bearing to form a main housing cavity, wherein the main housing cavity is used to accommodate a conductive component sleeved on the handle body and a brush slidably matched therewith; the main housing cavity is communicated with the external environment;

[0007] A receiving seat is installed on the outside of the main housing, and a first channel is opened in the receiving seat, and the first channel is connected to an external cooling air source; the receiving seat is used to install a power-side connection end electrically connected to the brush; and

[0008] The first passage is connected to the main housing cavity to form a cooling passage.

[0009] In one embodiment, a first through hole is formed on the side wall of the main shell, a lateral channel is formed on the side wall of the receiving seat, and the first channel is connected to the main shell cavity through the first through hole and the lateral channel.

[0010] In another embodiment, the cooling channel also includes a handle inner cavity in the handle body for accommodating the transducer, the handle inner cavity is connected to the main shell cavity through a second through hole opened on the side wall of the handle body, and the main shell cavity is connected to the external environment through the handle inner cavity.

[0011] In another embodiment, the ultrasonic knife handle also includes a variable amplitude rod fixedly connected to the transducer, the flange of the variable amplitude rod is connected to the inner wall of the knife handle body, and a third through hole is opened on the flange of the variable amplitude rod, and the inner cavity of the knife handle is connected to the external environment through the third through hole.

[0012] In yet another embodiment, the ultrasonic knife handle further includes a pressure cover, which surrounds the outer ring of the bearing and is tightly attached to the bearing, and a spiral groove is formed on the outer peripheral side of the pressure cover; the cooling channel further includes a spiral air duct, which is formed by the main shell covering the spiral groove, and the spiral air duct is respectively connected to the main shell cavity and the first through hole.

[0013] In yet another embodiment, the gland is further provided with an airtight passage away from the main shell cavity, and the airtight passage is respectively connected with the spiral air passage and the external environment.

[0014] In another embodiment, the ultrasonic knife handle also includes a hollow guide member installed in the receiving seat, the lower end of the guide member extends into the first channel, and the guide member can move in the first channel along the axial direction of the knife handle body, and the guide member is used to realize the supply of cooling gas to the first channel from an external cooling gas source.

[0015] In yet another embodiment, a first spring is further provided in the receiving seat, one end of the first spring is pressed against the bottom of the first channel, and the other end extends into the guide member, so that when the ultrasonic knife handle is assembled in place, the guide member is pressed against the supply end of the external cooling air source under the elastic force of the first spring.

[0016] In addition, the second aspect of the present application proposes an ultrasonic machining device, comprising a spindle and the ultrasonic tool handle according to the first aspect of the present application, wherein a transmitting seat is installed on the spindle, the transmitting seat is provided with a second channel that can be connected to the cooling channel, and the source end of the second channel obtains cooling gas supply from an external cooling gas source; the transmitting seat is used to install a power supply side connection end that can be electrically connected to the power consumption side connection end.

[0017] In one embodiment, the second channel and the first channel are aligned with each other along the axial direction of the handle body; the ultrasonic handle also includes a hollow guide member whose lower end extends into the first channel, and the guide member can move in the first channel along the axial direction of the handle body, and the upper end of the guide member can extend into the second channel, thereby, the first channel and the second channel are connected with the help of the guide member.

[0018] In another embodiment, an air core that can move axially along the shank body is further provided in the second channel, and an air inlet channel that runs through the bottom of the air core is opened inside the air core. The air core serves as a supply end of an external cooling air source, and its bottom can be pressed against the top of the guide member to achieve communication between the air inlet channel and the first channel.

[0019] In another embodiment, a necking portion is provided inside the second channel, and the upper surface of the necking portion is in an inverted cone shape; the air core comprises a sealing section and an air intake section from top to bottom, the sealing section is provided with an annular groove arranged along a direction perpendicular to the moving direction of the air core, and the annular groove is sealed to the upper surface of the necking portion by a first sealing member; the air intake channel is located in the air intake section, and comprises a lateral opening arranged close to the necking portion, and the lateral opening can be connected to the second channel above the necking portion; when the guide member moves upward and presses against the air core and moves upward therewith, the lateral opening passes over the necking portion upward, and the first sealing member is separated from the upper surface of the necking portion, and the lateral opening is connected to the second channel above the necking portion, thereby realizing the connection between the external cooling air source and the air intake channel.

[0020] In yet another embodiment, the second channel further includes a second spring, one end of the second spring being pressed against the lower surface of the neck portion, and the other end being pressed against the bottom flange of the air inlet section, so that when the ultrasonic knife handle is assembled in place, the air core is pressed against the guide member under the elastic force of the second spring.

[0021] In yet another embodiment, a fourth through hole is formed on the side wall of the second channel, and the fourth through hole is located above the neck portion. The fourth through hole serves as a source end of the second channel and obtains cooling gas supply from an external cooling gas source.

[0022] Through the above configuration, the cooling channel of the ultrasonic tool handle includes a main shell cavity for accommodating the electric transmission structure (including brushes and conductive components). The cooling channel can fully cool the brushes and conductive components that generate severe heat, thereby preventing the instability of electric transmission caused by excessive rotation speed; and the cooling channel includes a first channel on the receiving seat, which is connected to the cooling air source. The receiving seat is used to install the power-side connection end electrically connected to the brush, so in the present application, there is no need to set a special mounting seat for the connection between the cooling channel and the external air source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1a and 1b A front view and a side view of an ultrasonic machining device according to an embodiment of the present application are respectively shown;

[0025] Figure 2 Shown along Figure 1b A cross-sectional view taken along line AA, wherein the lower half of the ultrasonic cutting handle and the tool are omitted for clarity;

[0026] Figure 3 A cross-sectional view showing a launch base and a side housing according to an embodiment of the present application; and

[0027] Figure 4 Shows Figure 2 An enlarged cross-sectional view of portion B is shown.

[0028] List of reference numerals:

[0029] 100-ultrasonic knife handle; 110-knife handle body; 111-transducer; 113-second through hole; 114-knife handle inner cavity; 115-third through hole; 130-main shell; 131-bearing; 134-main shell cavity; 135-first through hole; 136-pressure cover; 137-airtight channel;

[0030] 138-spiral air channel; 140-conductive component; 150-conductive connector; 160-brush; 170-side housing; 171-side housing cavity; 172-receiving seat; 173-first channel; 174-first spring; 175-lateral channel; 176-second sealing member;

[0031] 177-electricity side connection terminal; 180-filter; 181-guide; 200-launching seat; 201-second channel; 202-constricted neck; 203-second spring; 204-third sealing member; 205-annular groove; 206-fourth through hole; 210-air core; 211-air inlet channel. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] In the description of the present application, it should be understood that the terms "X-axis", "Y-axis", "Z-axis", "vertical", "parallel", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Reference Figure 1a and 1b , which respectively show the front view and the side view of the ultrasonic machining device according to the embodiment of the present application. The ultrasonic machining device comprises an ultrasonic cutting handle 100 and a spindle (not shown in the figure), which will be described in detail below.

[0036] Reference Figure 2 , which shows that along Figure 1bThe ultrasonic knife handle 100 includes a knife handle body 110 , and the transducer 111 is arranged in a knife handle inner cavity 114 defined by the knife handle body 110 . The ultrasonic knife handle 100 also includes a main housing 130 , which is sleeved on the outer periphery of the knife handle body 110 . The main housing 130 is sleeved on at least one bearing 131, which is specifically a pair of bearings 131 in this embodiment. The pair of bearings 131 are arranged in a main housing cavity 134 defined by the main housing 130. The main housing 130 is rotatably connected to the handle body 110 by means of a pair of bearings 131 located in the main housing cavity 134. The handle body 110 is rotatably connected to the main housing 130 by means of a pair of bearings 131 located in the main housing cavity 134. The main housing cavity 134 can be connected to the external environment, such as opening a hole on the bottom side wall of the main housing and installing a nozzle so that the gas ejected by the nozzle is directed toward the tip position of the tool installed at the front end of the ultrasonic handle, so that the cooling gas discharged in the cooling channel can cool the tool and the workpiece. The ultrasonic handle 100 further includes a receiving seat 172, which is installed on the outside of the main housing 130. A first channel 173 is opened in the receiving seat 172, and the first channel 173 is connected to an external cooling gas source. The receiving seat 172 is used to install the power-side connection end 177 electrically connected to the power transmission structure in the ultrasonic knife handle 110. As a result, the first channel 173 and the main housing cavity 134 are connected to each other to form a cooling channel. In the present application, the receiving seat 172 for installing the power-side connection end 177 electrically connected to the power transmission structure is used as a fixing seat of the cooling channel to achieve communication with the cooling air source, so the ultrasonic knife handle of the present application does not need to set a special mounting seat for the connection between the cooling channel and the external air source.

[0037] The external cooling air source can be fluidly connected to the receiving seat 172, especially the first channel 173, and its specific configuration will be described in detail below. In addition, the electrical transmission structure in the ultrasonic knife handle includes a conductive component 140, a conductive connector 150 and a brush 160. Specifically, the conductive component 140 and the conductive connector 150 arranged around the knife handle body 110 are arranged in the main housing cavity 134, and the brush 160 electrically connected to the conductive component 140 in a sliding fit is also arranged in the main housing cavity 134. The brush 160 generates more heat during the sliding fit between the brush 160 and the conductive component 140. The cooling channel formed by the first channel 173 and the main housing cavity 134 is connected to the external cooling air source through the first channel 173, so the cooling channel can cool the brush 160 and the conductive component 140 in the main housing cavity 134 to ensure the stability of electrical transmission. The conductive connector 150 is electrically connected to the positive or negative pole of the transducer 111 by means of a wire (not shown) passing through the wire hole of the knife handle body 110. The main housing cavity 134 is fluidically connected to the handle cavity 114 through the second through hole 113, so that the cooling gas passes through the second through hole 113 and enters the handle cavity 114 to dissipate heat for the transducer 111. Since the transducer 111 is used to convert electrical energy into mechanical vibration, a lot of heat is generated during the operation, so the transducer needs to be cooled. Here, as a preferred embodiment, the handle cavity 114 serves as an additional part of the cooling channel. Moreover, the main housing cavity 134 is connected to the external environment through the handle cavity 114.

[0038] Specifically, the ultrasonic knife handle 100 further includes a variable amplitude rod fixedly connected to the transducer 111, the flange of the variable amplitude rod is connected to the inner wall of the knife handle body 110, and a third through hole 115 is opened on the flange, and the knife handle inner cavity 114 is connected to the external environment through the third through hole 115.

[0039] The ultrasonic knife handle 100 further includes a side housing 170, which defines a side housing cavity 171. The side housing 170 is mounted / attached on the circumferential outer side of the main housing 130 through the receiving seat 172, but does not surround the circumferential side of the main housing 130 360°. The side housing 170 wraps the receiving seat 172. Accordingly, the receiving seat 172 can be designed not to be closed, but at least partially open to the side housing cavity 171. The side housing 170 provided can prevent the wire connected to the brush 160 by the electric side connection terminal 177 from being exposed.

[0040] Combination Figure 4 ,in Figure 4 Shows Figure 2 The enlarged cross-sectional view of section B is shown in FIG. Figure 4As shown, the main housing 130 further includes a first through hole 135, which is opened on the circumferential side of the main housing 130, specifically, opened on the part of the circumferential side of the main housing 130 that is attached to the receiving seat 172. On the other hand, the receiving seat 172 is also provided with a lateral channel 175, which is connected to the first through hole 135. Specifically, the lateral channel 175 starts from the first channel 173 until it is aligned with the first through hole 135 and thus fluidly connected, and then the first channel 173 is connected to the main housing cavity 134. Moreover, the first through hole 135 and the pair of bearings 131 are roughly at the same level in the axial / vertical direction, so that the first through hole 135 is aligned with the pair of bearings 131. The pair of bearings 131 will also generate a lot of heat under the condition of long-term high-speed operation. Considering that the service life of the bearings 131 should be extended as much as possible, providing a heat dissipation solution for them is one of the optional solutions. Preferably, the ultrasonic knife handle 100 further includes a gland 136, which surrounds the outer ring of the bearing 131 and is close to the bearing 131, and the cooling channel further includes a spiral air channel 138, which is formed by a spiral groove on the outer peripheral side of the main housing 130 covering the gland 136. The first through hole 135 is connected to the spiral air channel 138, so that the cooling gas from the receiving seat 172 enters the spiral air channel 138 through the lateral channel 175 and the first through hole 135. The spiral air channel 138 is connected to the main housing cavity 134 and the first through hole 135 respectively. It is conceivable that the gland 136 is made of a heat conductive material so as to transfer the heat generated by the pair of bearings 131 to the cooling gas. The gland 136 is also provided with an airtight passage 137 away from the main housing cavity 134, and the airtight passage 137 is respectively connected with the spiral air passage and the external environment. After the cooling gas enters the spiral air passage 138, a part of it enters the airtight passage 137 and is discharged to the external environment, and the remaining part enters the main housing cavity 134. The existence of the airtight passage 137 ensures that a positive pressure is formed inside to prevent the external environment from affecting the inside.

[0041] Back to Figure 2 , the ultrasonic machining equipment includes a main shaft and the above-mentioned ultrasonic tool handle 100. A transmitting seat 200 is installed on the main shaft, and a second channel 201 is opened in the transmitting seat 200. In order to solve the technical problems raised above, the cooling gas source is fluidly connected to the transmitting seat 200, for example, by means of a filter 180 installed on the transmitting seat 200, and in particular, the fluid is connected to the second channel 201. In other words, the source end of the second channel 201 obtains cooling gas supply from an external cooling gas source. In addition, the transmitting seat 200 is used to install a power supply side connection end that can be electrically connected to the power side connection end 177. Moreover, the power side electrical connection 177 is retractable. When the ultrasonic tool handle 100 is installed, the power side connection end 177 is prevented from being in hard contact with the power supply side connection end, thereby extending its service life.

[0042] Furthermore, in order to ensure that the cooling gas can be supplied to the receiving seat 172, a hollow guide member 181 is arranged in the receiving seat 172, and the guide member 181 can move axially along the shank body 110 in the first channel 173, and the guide member 181 can be connected to the second channel 201 in the launching seat 200, thereby realizing the connection of the gas path.

[0043] Combination Figure 3 , which shows a cross-sectional view of a launch base 200 and a side housing 170 according to an embodiment of the present application. It can be seen from the figure that the second channel 201 and the first channel 173 are aligned with each other in the axial direction of the handle body 110. The upper end of the guide member 181 extends into the second channel 201, and the lower end of the guide member 181 extends into the first channel 173, thereby achieving fluid communication between the second channel 201 and the first channel 173.

[0044] Moreover, the guide member 181 is movable relative to the second channel 201 or the first channel 173. Specifically, the receiving seat 172 is provided with a first spring 174, the lower end of which is pressed against the base of the receiving seat 172, and the upper end of which extends into the guide member 181 and presses against the guide member 181. In this way, when the ultrasonic knife handle is assembled in place, the first spring 174 is compressed, and the guide member 181 is pressed against the cooling gas supply end above it under the elastic force of the first spring 174.

[0045] Furthermore, the second channel 201 also includes an air core 210 that can move axially along the shank body 110. The air core 210 has an air inlet channel 211 running through its bottom. The air core 210 serves as a supply end of an external cooling air source, and its bottom can be pressed against the top of the guide member 181 to achieve communication between the air inlet channel 211 and the first channel 173.

[0046] Specifically, a constricted neck portion 202 is formed inside the second channel 201, and the upper surface of the constricted neck portion 202 is in an inverted cone shape. The air core 210 includes a sealing section and an air intake section from top to bottom. An annular groove 205 is provided on the outer peripheral surface of the sealing section along a direction perpendicular to the moving direction of the air core 210. The annular groove 205 is sealed with the upper surface of the constricted neck portion 202 through a first seal (the first seal is not shown in the figure). The outer diameter of the air core 210 is slightly smaller than the inner diameter of the constricted neck portion 202 to ensure that the air core 210 passes through the constricted neck portion 202, and the outer surface of the air core 210 is close to the inner side of the constricted neck portion 202. In other words, the cooperation between the air core 210 and the constricted neck portion 202 divides the second channel 201 into two upper and lower parts that are not connected. The air inlet channel 21 is located in the air inlet section. It is conceivable that the air inlet channel 211 includes two lateral openings located at the upper part of the air core 210, and of course also includes a lower opening located at the bottom surface of the air core 210. The lateral openings are arranged close to the neck 202, and the lateral openings can be connected to the second channel 201 above the neck 202. Of course, the number of lateral openings can be other, such as 1 or 3. The bottom of the air core 210 and the top of the guide member 181 are pressed against each other, whereby the lower opening of the air inlet channel 211 and the hollow guide member 181 are fluidly connected to each other. When the ultrasonic knife handle 100 is not assembled in place, the guide member 181 does not move upward, and the air core 210 is also not pushed against and moves upward together. The two lateral openings of the air core 210 are aligned with the neck 202, and the upper and lower parts of the second channel 201 are closed by the annular groove 205 of the air core 210 and the upper surface of the neck 202 through the first seal. Relatively speaking, as described above, when the ultrasonic knife handle 100 is assembled in place, that is, when the guide member 181 moves upward with the knife handle body, the guide member 181 pushes the gas core 210 to move upward together, and the two side openings pass upward over the neck portion 202, and the first sealing member 205 is separated from the upper surface of the neck portion 202. In this way, after the cooling gas of the cooling gas source enters the upper part of the second channel 201, it passes through the side opening, the lower opening, the guide member 181, and the first channel 173 of the receiving seat 172 in sequence to reach the main shell cavity 134.

[0047] In a preferred embodiment, a fourth through hole 206 is opened on the side wall of the second channel 201. The fourth through hole 206 is located above the neck portion 202. The fourth through hole 206 serves as the source end of the second channel 201 and obtains cooling gas supply from an external cooling gas source.

[0048] In a preferred embodiment, the second channel 201 is further provided with a second spring 203, the upper end of the second spring 203 is fixedly pressed against the lower surface of the neck portion 202, and the lower end of the second spring 203 is pressed against the bottom flange of the air inlet section, that is, the lower end of the air core 210. When the ultrasonic knife handle 100 is assembled in place, the second spring 203 is in a compressed state, and the air core 210 is pressed against the top end of the guide member 181 under the elastic force of the second spring 203.

[0049] More preferably, in order to facilitate the guide member 181 to push the air core 210 to move, the top of the guide member 181 is chamfered so that the top of the guide member 181 is formed into a truncated cone shape. Compared with the top without chamfering, the truncated cone-shaped top reserves a certain gap for the contact interface between the guide member 181 and the second channel 201 and the air core 210, so that the guide member 181 and the air core 210 move more smoothly in the second channel 201.

[0050] It can be seen that the guide 181 moves axially relative to the second channel 201 and the first channel 173 at the same time, and the guide 181 is a key component for realizing the fluid connection between the second channel 201 and the first channel 173. Preferably, a third sealing member 204, such as an O-ring, is provided at the bottom of the transmitting seat 200 and the contact interface between the guide 181 and the second channel 201 to prevent the cooling gas from leaking from the contact interface to the surrounding environment. Similarly, a second sealing member 176, such as an O-ring, is provided at the top of the receiving seat 172 and the contact interface between the guide 181 and the first channel 173.

[0051] The power transmission path of the ultrasonic machining device is established, starting from the transmitter 200, passing through the power supply side connection end, the power consumption side connection end 177 of the receiving seat 172, the brush 160, the conductive component 140, the conductive connector 150, and finally reaching the transducer 111. With the above configuration, a cooling solution is provided for the ultrasonic machining device, especially its power transmission path. The second channel 201 and the first channel 173 respectively transport cooling gas for the transmitter 200 and the receiving seat 172. The cooling gas from the first channel 173 enters the main housing cavity 134 and performs heat exchange for the brush 160, the conductive component 140, and the conductive connector 150. The transducer 111 located in the tool handle inner cavity 114 is heat exchanged by the cooling gas passing through the second through hole 113. Even considering that the bearing 131 also generates heat, the present application is specially configured with a spiral airway to provide a proper cooling solution for the bearing 131. Therefore, each conventional heat-generating component of the ultrasonic machining equipment is cooled / dissipated accordingly, ensuring that each component operates in a suitable working environment, maintaining the operational stability of the entire equipment, and extending the service life of each component.

[0052] Through the above configuration, the handle body in the ultrasonic handle and the peripheral mounting components thereof have a configuration structure that is connected to each other, so the external cooling gas source can deliver the cooling gas to the target position / component by means of such a connected configuration structure. In addition, in the ultrasonic handle designed in this way, the external cooling gas source can be connected to the ultrasonic handle at a reasonable position, thereby avoiding the design in which the cooling channel is arranged outside the ultrasonic handle, thereby avoiding the risk of accidental damage to the external cooling channel, and at the same time achieving a more compact design configuration for the ultrasonic handle. Furthermore, except for the external cooling gas source and the filter, the cooling channel is basically all arranged inside the ultrasonic handle, and its airtightness is fully guaranteed, and on this basis, the diversity of specific fluid communication methods inside the ultrasonic handle can be implemented.

[0053] The power transmission mechanism always benefits from the cooling gas to cool and dissipate the heat, including but not limited to, from the power supply side connection end of the transmitter on the machine tool side, through the power consumption side connection end of the side shell / receiving seat, the brushes, conductive components and conductive connectors in the main shell cavity, and finally to the transducer in the tool handle cavity, all of which can be immersed in the cooling gas atmosphere. In addition, considering that the high-speed rotating motion parts (i.e., bearings) also generate a large amount of heat, the cooling channel design according to the present application also provides cooling and heat dissipation for them, ensuring the stable operation of the rotating motion parts and extending the service life. In addition, since the cooling medium according to the present application is gas, it can smoothly pass through the route of the transmitter-side shell cavity-main shell cavity-tool handle cavity, and finally enter the surrounding environment from the gap between the tool handle body and the tool, and there is no need to worry about the leakage of the cooling medium as in the prior art such as CN218926288U.

[0054] It should be understood that what is described in the above drawings and specific embodiments are merely exemplary embodiments of the present application, and are not exhaustive of the possible implementation methods of the present application. Those skilled in the art may make various changes to the above specific implementation methods within the scope of protection of the present application without departing from the main purpose of the present application.

Claims

1. An ultrasonic knife handle, characterized in that: include: The handle body; A main housing is rotatably sleeved on the outer periphery of the handle body through a bearing to form a main housing cavity, wherein the main housing cavity is used to accommodate a conductive component sleeved on the handle body and a brush slidably matched therewith; the main housing cavity is communicated with the external environment; A receiving seat is installed on the outside of the main housing, and a first channel is opened in the receiving seat, and the first channel is connected to an external cooling air source; the receiving seat is used to install a power-side connection end electrically connected to the brush; and The first passage is connected to the main housing cavity to form a cooling passage.

2. The ultrasonic knife handle according to claim 1, characterized in that: A first through hole is formed on the side wall of the main shell, and a lateral channel is formed on the side wall of the receiving seat. The first channel is connected to the main shell cavity through the first through hole and the lateral channel.

3. The ultrasonic knife handle according to claim 1, characterized in that: The cooling channel also includes a handle inner cavity in the handle body for accommodating the transducer. The handle inner cavity is connected to the main shell cavity through a second through hole opened on the side wall of the handle body. The main shell cavity is connected to the external environment through the handle inner cavity.

4. The ultrasonic knife handle according to claim 3, characterized in that: It also includes a variable amplitude rod fixedly connected to the transducer, the flange of the variable amplitude rod is connected to the inner wall of the handle body, and a third through hole is opened on the flange of the variable amplitude rod, and the inner cavity of the handle is connected to the external environment through the third through hole.

5. The ultrasonic knife handle according to claim 2, characterized in that: It also includes a pressure cover, which surrounds the outer ring of the bearing and is close to the bearing, and a spiral groove is formed on the outer peripheral side of the pressure cover; the cooling channel also includes a spiral air duct, which is formed by the main shell covering the spiral groove, and the spiral air duct is respectively connected to the main shell cavity and the first through hole.

6. The ultrasonic knife handle according to claim 5, characterized in that: The gland is also provided with an airtight passage away from the main shell cavity, and the airtight passage is communicated with the spiral air passage and the external environment respectively.

7. The ultrasonic knife handle according to claim 1, characterized in that: It also includes a hollow guide member installed in the receiving seat, the lower end of the guide member extends into the first channel, and the guide member can move in the first channel along the axial direction of the shank body, and the guide member is used to supply cooling gas to the first channel from an external cooling gas source.

8. The ultrasonic knife handle according to claim 7, characterized in that: A first spring is also provided in the receiving seat, one end of the first spring is pressed against the bottom of the first channel, and the other end extends into the guide member, so that when the ultrasonic knife handle is assembled in place, the guide member is pressed against the supply end of the external cooling air source under the elastic force of the first spring.

9. An ultrasonic machining device, comprising a spindle and an ultrasonic tool handle according to any one of claims 1 to 8, characterized in that: A launching seat is installed on the main shaft, and the launching seat is provided with a second channel which can be communicated with the cooling channel, and the source end of the second channel obtains cooling gas supply from an external cooling gas source; the launching seat is used to install a power supply side connection end which can be electrically connected to the power consumption side connection end.

10. The ultrasonic processing equipment according to claim 9, characterized in that: The second channel and the first channel are aligned with each other along the axial direction of the handle body; the ultrasonic handle also includes a hollow guide member whose lower end extends into the first channel, the guide member can move in the first channel along the axial direction of the handle body, and the upper end of the guide member can extend into the second channel, thereby, the first channel and the second channel are connected with the help of the guide member.

11. The ultrasonic processing equipment according to claim 10, characterized in that: The second channel is also provided with an air core which can move along the axial direction of the shank body. The air core is provided with an air inlet channel running through its bottom. The air core serves as the supply end of the external cooling air source, and its bottom can be pressed against the top of the guide member to achieve communication between the air inlet channel and the first channel.

12. The ultrasonic processing equipment according to claim 11, characterized in that: A necking portion is provided inside the second channel, and the upper surface of the necking portion is in an inverted cone shape; the air core comprises a sealing section and an air intake section from top to bottom, the sealing section is provided with an annular groove arranged along a direction perpendicular to the moving direction of the air core, and the annular groove is sealed with the upper surface of the necking portion by a first sealing member; the air intake channel is located in the air intake section, and comprises a lateral opening arranged close to the necking portion, and the lateral opening can be connected to the second channel above the necking portion; when the guide member moves upward and presses against the air core and moves upward together with the air core, the lateral opening passes over the necking portion upward, and the first sealing member is separated from the upper surface of the necking portion, and the lateral opening is connected to the second channel above the necking portion, thereby realizing the connection between the external cooling air source and the air intake channel.

13. The ultrasonic processing equipment according to claim 12, characterized in that: The second channel also includes a second spring, one end of which is pressed against the lower surface of the neck portion, and the other end of which is pressed against the bottom flange of the air inlet section, so that when the ultrasonic knife handle is assembled in place, the air core is pressed against the guide member under the elastic force of the second spring.

14. The ultrasonic processing equipment according to claim 12, characterized in that: A fourth through hole is provided on the side wall of the second channel. The fourth through hole is located above the neck portion. The fourth through hole serves as a source end of the second channel and obtains cooling gas supply from an external cooling gas source.

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