Ultrasonic tool holder, ultrasonic processing device and ultrasonic processing equipment

Abstract

The present invention relates to the field of ultrasonic machining technology, and discloses an ultrasonic toolholder, ultrasonic machining device, and ultrasonic machining equipment. The toolholder comprises a toolholder body and a receiving frame. The toolholder body has a rear end portion for being inserted into an ultrasonic spindle. The outer periphery of the toolholder body is provided with a tool-clamping groove, a claw positioning groove for circumferentially locating the tool change fixture, and a spindle positioning groove for circumferentially locating the ultrasonic spindle. The receiving frame is sleeved and fixed to the outer periphery of the toolholder body, with the spindle positioning groove and the tool-clamping groove respectively provided on either side of the receiving frame in the axial direction. The front and / or rear end of the tool-clamping groove are provided with a claw positioning groove, and the claw positioning groove is provided at the front end of the receiving frame. The present invention can realize automatic tool changing and can also meet the needs of a wider range of machining scenarios.

Description

Technical Field

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

[0002] Introducing high-frequency vibration into machining operations not only improves surface roughness and precision, but also reduces cutting resistance and increases tool life. Consequently, this technique is gaining widespread application. Ultrasonic machining equipment is one such application.

[0003] At present, since the ultrasonic tool holder needs to generate a certain amplitude during operation, a receiving frame for installing an ultrasonic wireless receiving device needs to be installed on the tool holder body. After the ultrasonic tool holder is installed on the ultrasonic main shaft, the receiving frame and the transmitting frame on the ultrasonic main shaft for installing an ultrasonic wireless transmitting device are opposite and the distance between them is small. In addition, the tool clamping slot of the existing ultrasonic tool holder is generally set at the rear end of the receiving frame. Therefore, when the tool changing fixture is clamped at the position of the tool clamping slot for tool changing, it will interfere with the transmitting frame, and automatic tool changing cannot be achieved.

[0004] Therefore, the existing technology generally uses manual tool change or setting up a non-full-ring launcher. The non-full-ring launcher can leave space at the tool change interference position of the tool change fixture for automatic tool change, but the stability of the ultrasonic wireless transmitter installed on the non-full-ring launcher and the amplitude generated by the ultrasonic tool handle are low, which cannot meet some application scenarios. Summary of the Invention

[0005] One purpose of the present application is to provide an ultrasonic tool holder, an ultrasonic machining device and an ultrasonic machining equipment that can realize automatic tool changing and adapt to a launch frame with a full ring structure to meet more machining application scenarios.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] An ultrasonic tool handle, comprising:

[0008] A tool handle body having a rear end portion for being inserted into an ultrasonic spindle, wherein the outer periphery of the tool handle body is provided with a tool clamping groove, a claw positioning groove for circumferentially positioning the tool-changing claws, and a spindle positioning groove opening toward the rear end portion for circumferentially positioning the ultrasonic spindle; and

[0009] A receiving frame is sleeved and fixed on the outer periphery of the tool handle body, and the spindle positioning groove and the tool clamping groove are respectively provided on both sides of the axial direction of the receiving frame;

[0010] Wherein, the front end and / or rear end of the knife clamping slot is provided with the claw positioning slot, and the claw positioning slot is provided at the front end of the receiving frame.

[0011] In some embodiments of the present application, the spindle positioning groove has a positioning front side wall, and the positioning front side wall is arranged at the rear end of the rear end surface of the receiving frame or is flush with the rear end surface of the receiving frame.

[0012] In some embodiments of the present application, the spindle positioning groove has a first side wall and a second side wall that are arranged opposite to each other and used for circumferential positioning with the ultrasonic spindle.

[0013] In some embodiments of the present application, the first side wall, the positioning front side wall and the second side wall are connected in sequence with a smooth transition.

[0014] In some embodiments of the present application, the positioning front side wall is an arc side wall that protrudes toward the front end of the handle body.

[0015] In some embodiments of the present application, the knife clamping groove is arranged on the outer periphery of the knife handle body.

[0016] In some embodiments of the present application, the knife slot has a knife front side wall and a knife rear side wall that are arranged opposite to each other, and the knife front side wall and the knife rear side wall are both inclined in a direction away from the knife slot.

[0017] In some embodiments of the present application, the claw positioning groove passes through the front side wall of the knife or the rear side wall of the knife and is connected to the knife groove.

[0018] In some embodiments of the present application, a connecting groove is provided on the outer periphery of the tool handle body, and the spindle positioning groove is connected with the claw positioning groove through the connecting groove.

[0019] In some embodiments of the present application, the claw positioning grooves and the spindle positioning grooves are symmetrically arranged at both radial ends of the tool handle body.

[0020] In some embodiments of the present application, the tool holder body includes a spindle positioning portion, the spindle positioning groove is opened on the outer periphery of the spindle positioning portion, the radius of the spindle positioning portion is R, the arc length formed by the circumferential ends of the spindle positioning groove opening along the radial direction of the spindle positioning portion along the outer periphery of the spindle positioning portion is C, 0.3≤C / R≤0.8, and the maximum groove depth of the spindle positioning groove along the radial direction of the spindle positioning portion is H, 0.2≤H / R≤0.33.

[0021] In some embodiments of the present application, 0.5≤C / H≤2.7, wherein 4.5≤H≤20.

[0022] The present invention also provides an ultrasonic machining device, comprising an ultrasonic spindle and the above-mentioned ultrasonic tool holder, wherein the ultrasonic spindle comprises:

[0023] Spindle housing;

[0024] A rotating shaft rotatably inserted into the spindle housing, wherein the front end of the rotating shaft is provided with a positioning portion and a mounting hole for inserting the rear end portion;

[0025] a launching frame, which is arranged at the front end of the spindle housing and surrounds the rotating shaft;

[0026] Wherein, when the rear end portion is inserted into the mounting hole, the positioning portion is inserted into the main shaft positioning groove, the main shaft positioning groove is located on the inner side of the launching frame, and the receiving frame is arranged opposite to the launching frame.

[0027] In some embodiments of the present application, the ultrasonic spindle further includes a front end cover, the spindle housing having a first air channel, the front end cover being disposed at the front end of the spindle housing and surrounding the rotating shaft, an air cavity being disposed between the inner side of the front end cover and the outer side of the rotating shaft, and the front end cover having a second air channel connecting the first air channel and the air cavity;

[0028] A first gap communicating with the air cavity is formed between the inner side of the launching frame and the outer side of the shank body, and a second gap communicating with the first gap is formed between the front end of the launching frame and the rear end of the receiving frame.

[0029] In some embodiments of the present application, a third gap is formed between the inner side of the launching frame and the outer side of the rotating shaft, and the air cavity, the third gap and the first gap are connected in sequence.

[0030] In some embodiments of the present application, a ventilation ring is provided in the air cavity and is arranged around the rotating shaft. An air gap connected to the first gap is formed between the inner side of the ventilation ring and the outer side of the rotating shaft. The ventilation ring is provided with a ventilation hole connecting the second air duct and the air gap.

[0031] In some embodiments of the present application, a first annular groove is provided on the inner side of the front end cover, and a second annular groove is provided on the inner side of the ventilation ring. The second air duct, the first annular groove, the ventilation hole, the second annular groove and the air gap are connected in sequence.

[0032] In some embodiments of the present application, there are multiple ventilation holes and they are evenly arranged along the circumference of the ventilation ring.

[0033] In some embodiments of the present application, the rotating shaft includes a shaft body and a positioning ring, the positioning ring is sleeved and fixed on the outer periphery of the shaft body, and the front end of the positioning ring is provided with the positioning portion protruding from the front end surface of the shaft body.

[0034] The present invention also provides an ultrasonic machining device, comprising a tool changing fixture and the above-mentioned ultrasonic machining device, wherein the tool changing fixture comprises a swing arm and a tool changing claw connected to one end of the swing arm, the tool changing claw having a slot for accommodating the ultrasonic tool holder, and the tool changing claw is provided with a positioning block protruding from the inner side wall of the slot;

[0035] When the ultrasonic tool handle is clamped in the clamping slot, the positioning block is inserted into the clamping claw positioning slot, the tool changing fixture drives the ultrasonic tool handle to move to the bottom of the ultrasonic spindle and inserts the rear end into the mounting hole, and the positioning portion is inserted into the spindle positioning slot.

[0036] In some embodiments of the present application, the tool-changing claw includes a first side claw and a second side claw arranged opposite to each other, the slot is formed between the first side claw and the second side claw, and the first side claw and the second side claw both have an elastic part. When the ultrasonic tool handle is accommodated in the slot, the elastic part is embedded in the tool slot and presses the ultrasonic tool handle into the slot.

[0037] In some embodiments of the present application, the elastic portion has an elastic end that abuts against the inner wall of the knife slot, and the elastic end is spherical.

[0038] The present invention is based on the above-mentioned main shaft structure, and has the following technical effects:

[0039] During the tool changing process, the tool changing fixture is clamped in the tool clamping groove at the front end of the receiving frame, and circumferential positioning is achieved through the claw positioning groove and the tool changing fixture. By clamping the ultrasonic tool holder and moving it upward under the ultrasonic main shaft, the rear end is inserted into the ultrasonic main shaft, so that the main shaft positioning groove and the ultrasonic main shaft cooperate to achieve circumferential positioning. In addition, the tool changing fixture clamped at the front end of the receiving frame will not interfere with the ultrasonic main shaft, thereby realizing automatic tool changing of the ultrasonic tool holder and improving the reliability of tool changing.

[0040] In addition, since the tool changing fixture does not interfere with the ultrasonic spindle during the tool changing process, the ultrasonic spindle in the ultrasonic machining device provided by the present application can be provided with a transmitting frame with a full-ring structure arranged around the rotating axis to install a full-ring structure ultrasonic wireless transmitting device, so that the ultrasonic machining equipment has a more stable output power and generates a larger amplitude, meeting the needs of more different machining scenarios;

[0041] Furthermore, the present application provides an ultrasonic machining device that can realize automatic tool change, and realize circumferential positioning with the ultrasonic spindle and the tool change fixture through the spindle positioning groove and the claw positioning groove respectively, thereby ensuring the reliability of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present application is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. In addition, unless otherwise specified, the drawings are intended only to conceptually represent the composition or structure of the described objects and may contain exaggerated representations, and the drawings are not necessarily drawn to scale.

[0043] Figure 1 is a perspective view of an embodiment of the ultrasonic processing device of the present application;

[0044] Figure 2 yes Figure 1 The illustrated embodiment does not include a cross-sectional view of the spindle housing;

[0045] Figure 3 yes Figure 2 An enlarged view of point A in the illustrated embodiment.

[0046] Figure 4 yes Figure 1 A three-dimensional cross-sectional view of the tool handle body and the tool changing fixture in the illustrated embodiment;

[0047] Figure 5 yes Figure 1 A perspective view of the ultrasonic tool holder in the illustrated embodiment;

[0048] Figure 6 yes Figure 1 A perspective view of the tool change fixture in the illustrated embodiment;

[0049] Figure 7 yes Figure 1 A perspective view of the front end cover in the embodiment shown in FIG;

[0050] Figure 8 yes Figure 1 A perspective view of the vent ring in the embodiment shown in FIG;

[0051] Figure 9 yes Figure 1 A perspective view of the positioning ring in the embodiment shown in FIG;

[0052] Figure 10 It is a three-dimensional view of another embodiment of the handle body of the present application;

[0053] Figure 11 It is a three-dimensional view of another embodiment of the handle body of the present application;

[0054] Figure 12 It is a three-dimensional view of another embodiment of the handle body of the present application;

[0055] Figure 13 yes Figure 1A top view of the handle body in the illustrated embodiment.

[0056] In the picture:

[0057] 100, ultrasonic spindle, 110, spindle housing, 111, first air channel, 120, rotating shaft, 121, positioning portion, 122, mounting hole, 123, shaft body, 124, positioning ring, 130, launching frame, 140, front end cover, 141, second air channel, 142, first annular groove, 150, first gap, 160, second gap, 170, third gap, 180, ventilation ring, 181, ventilation hole, 182, second annular groove;

[0058] 200, tool changing fixture, 210, swing arm, 220, tool changing claw, 221, first side claw, 222, second side claw, 223, elastic portion, 224, elastic end, 230, slot, 240, positioning block;

[0059] 300, ultrasonic shank, 310, shank body, 311, rear end portion, 312, shank slot, 312a, shank front side wall, 312b, shank rear side wall, 313, claw positioning slot, 314, spindle positioning slot, 314a, positioning front side wall, 314b, first side wall, 314c, second side wall, 315, connecting slot, 320, receiving frame, 330, spindle positioning portion. DETAILED DESCRIPTION

[0060] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present application.

[0061] First of all, it should be noted that the directions such as front end, rear end, front side, rear side, forward, and backward mentioned in this article are defined relative to the direction of each ultrasonic tool holder. Specifically, the end of the ultrasonic tool holder used for processing is the front end, and the end of the ultrasonic tool holder axially away from the front end is the rear end. They are relative concepts.

[0062] It should be noted that the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality.

[0063] In addition, it should be pointed out that any single technical feature described or implied in the embodiments of this document, or any single technical feature shown or implied in the accompanying drawings, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present application that are not directly mentioned in this document.

[0064] It should also be understood that, while the terms "first," "second," and the like are used herein to describe various types of information, such information should not be limited to these terms; these terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of this application.

[0065] It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

[0066] refer to Figure 1 One embodiment of the present invention provides an ultrasonic machining device, including an ultrasonic tool holder 300 , an ultrasonic spindle 100 and a tool changing fixture 200 .

[0067] refer to Figure 1-Figure 5 , wherein the ultrasonic knife handle 300 includes a knife handle body 310 and a receiving frame 320, the knife handle body 310 has a rear end portion 311 for being inserted into the ultrasonic spindle 100, the outer periphery of the knife handle body 310 is provided with a knife clamping groove 312, a claw positioning groove 313 for circumferential positioning with the tool changing fixture 200 and a spindle positioning groove 314 open to the rear end portion 311; the receiving frame 320 is sleeved and fixed on the outer periphery of the knife handle body 310, the spindle positioning groove 314 and the knife clamping groove 312 are respectively provided on both sides of the axial direction of the receiving frame 320, specifically, the spindle positioning groove 314 is provided at the rear end of the receiving frame 320, and the knife clamping groove 312 is provided at the front end of the receiving frame 320; wherein, the front end and / or rear end of the knife clamping groove 312 is provided with a claw positioning groove 313, and the claw positioning groove 313 is provided at the front end of the receiving frame 320.

[0068] refer to Figure 1 and Figure 2 The ultrasonic spindle 100 of this embodiment includes a spindle housing 110, a rotating shaft 120 and a launching frame 130. The rotating shaft 120 is rotatably arranged in the spindle housing 110. The front end of the rotating shaft 120 is provided with a positioning portion 121 and a mounting hole 122 for inserting the rear end portion 311. The launching frame 130 is arranged at the front end of the spindle housing 110 and is arranged around the rotating shaft 120.

[0069] refer to Figure 4-Figure 6The tool changing fixture 200 of this embodiment includes a swing arm 210 and a tool changing claw 220 connected to one end of the swing arm 210. The tool changing claw 220 has a slot 230 for accommodating the ultrasonic tool holder 300, and the tool changing claw 220 is provided with a positioning block 240 protruding from the inner side wall of the slot 230. Specifically, the claw positioning groove 313 is arranged at the front end and / or rear end of the tool slot 312. The positioning block 240 can be respectively arranged at the upper end surface and / or lower end surface of the tool changing claw 220 according to the position of the claw positioning groove 313, so as to cooperate with the claw positioning groove 313 to realize the positioning of the tool changing fixture 200 and the ultrasonic tool holder 300 when taking the tool. The claw positioning groove 313 in this embodiment is arranged at the front end of the tool slot 312. Therefore, the positioning block 240 is arranged at the lower end surface of the tool changing claw 220.

[0070] In this way, when the ultrasonic knife handle 300 is clamped in the clamping slot 230, the positioning block 240 is inserted into the clamping claw positioning slot 313 to realize the circumferential positioning of the tool changing fixture 200 and the ultrasonic knife handle 300. Then, the tool changing fixture 200 drives the ultrasonic knife handle 300 to move to the bottom of the ultrasonic main shaft 100 and inserts the rear end portion 311 into the mounting hole 122, and the positioning portion 121 is inserted into the main shaft positioning slot 314 to realize the circumferential positioning of the ultrasonic main shaft 100 and the ultrasonic knife handle 300. At this time, the main shaft positioning slot 314 is located on the inner side of the transmitting frame 130, and the receiving frame 320 is located on the inner side of the transmitting frame 130. It is arranged opposite to the transmitting frame 130; during the tool changing process, the tool changing fixture 200 is clamped at the position of the tool clamping slot 312 of the ultrasonic tool handle 300, and the tool clamping slot 312 is provided at the front end of the receiving frame 320. The tool changing fixture 200 moves the ultrasonic tool handle 300 and inserts the rear end portion 311 of the ultrasonic tool handle 300 into the ultrasonic main shaft 100. At this time, the tool changing fixture 200 and the ultrasonic main shaft 100 are respectively located on both sides of the receiving frame 320, thereby avoiding interference between the tool changing fixture 200 and the ultrasonic main shaft 100 during the tool changing process, thereby realizing the automatic installation of the ultrasonic tool handle 300;

[0071] In addition, since the tool changing fixture 200 will not interfere with the ultrasonic spindle 100 during the tool changing process, the launcher 130 set at the front end of the spindle housing 110 does not need to avoid the tool changing fixture 200, so that a launcher 130 with a full-ring structure set around the rotating shaft 120 can be set to install a full-ring structure ultrasonic wireless transmitting device, so that the ultrasonic processing equipment has a more stable output power and generates a larger amplitude, meeting more different processing requirements.

[0072] refer to Figure 5Furthermore, the spindle positioning groove 314 provided in the ultrasonic shank 300 in this embodiment has a positioning front side wall 314a, and the positioning front side wall 314a is provided at the rear end of the rear end surface of the receiving frame 320 or is flush with the rear end surface of the receiving frame 320. In this way, when the receiving frame 320 is fixed on the outer periphery of the shank body 310, there is a gap between the inner side of the receiving frame 320 and the outer periphery of the shank body 310, thereby preventing the receiving frame 320 from being deformed at the gap when the receiving frame 320 and the shank body 310 are welded and fixed, thereby ensuring the assembly quality of the receiving frame 320 and the shank body 310.

[0073] refer to Figure 10 In other embodiments, to improve the processing efficiency of the spindle positioning groove 314 and the claw positioning groove 313, a connecting groove 315 is provided on the outer periphery of the tool handle body 310. The spindle positioning groove 314 is connected to the claw positioning groove 313 through the connecting groove 315. Thus, during the processing, the spindle positioning groove 314 and the claw positioning groove 313 can be quickly processed by moving the tool along the axial direction of the tool handle body 310. In another embodiment, the front end and / or rear end of the claw positioning groove 313 can be closed.

[0074] In this embodiment, the spindle positioning groove 314 has a first side wall 314b and a second side wall 314c which are arranged relatively along the circumferential direction of the handle body 310 and are used for circumferential positioning with the ultrasonic spindle 100, thereby limiting the movement of the positioning portion 121 in the circumferential direction relative to the handle body 310 and ensuring that the rotating shaft 120 is synchronized with the handle body 310 during rotation.

[0075] Furthermore, the first side wall 314b, the positioning front side wall 314a and the second side wall 314c are connected in sequence with smooth transitions. Specifically, the first side wall 314b and the positioning front side wall 314a, and the second side wall 314c and the positioning front side wall 314a are connected by chamfered corners, which helps to avoid dust accumulation at the connection between the first side wall 314b and the positioning front side wall 314a, and the second side wall 314c and the positioning front side wall 314a.

[0076] In another embodiment, the positioning front side wall 314a is an arc side wall protruding toward the front end of the shank body 310, and the positioning front side wall 314a is smoothly connected to the first side wall 314b and the second side wall 314c, and the diameter of the positioning front side wall 314a is equal to the distance between the first side wall 314b and the second side wall 314c. Therefore, when processing the spindle positioning groove 314, a large-diameter tool can be used to simultaneously process and form the positioning front side wall 314a, the first side wall 314b and the second side wall 314c without replacing the tool, thereby improving processing efficiency.

[0077] Furthermore, the knife clamping groove 312 in this embodiment is arranged around the outer periphery of the handle body 310. Figure 4 and Figure 6 The tool-changing claw 220 includes a first side claw 221 and a second side claw 222 arranged opposite to each other, and a clamping groove 230 is formed between the first side claw 221 and the second side claw 222. The first side claw 221 and the second side claw 222 both have an elastic portion 223. When clamping the tool handle body 310, the tool-changing claw 220 moves along the radial direction of the tool handle body 310, and the elastic portion 223 is clamped along the tool clamping groove 312 arranged on the outer circumference of the tool handle body 310. When clamping the tool handle body 310, the tool-changing claw 220 can pass through the maximum diameter of the tool clamping groove 312 and clamp the tool handle body 310 in the clamping groove 230 under the action of the elastic force.

[0078] Among them, the knife slot 312 has a front side wall 312a and a rear side wall 312b of the knife that are relatively arranged. The front side wall 312a and the rear side wall 312b of the knife are both inclined in the direction away from the knife slot 312, thereby playing a guiding role, guiding the elastic part 223 to be inserted into the knife slot 312, thereby improving the accuracy and efficiency of the knife; specifically, the elastic part 223 has an elastic end 224 that abuts against the inner wall of the knife slot 312, and the elastic end 224 is spherical, so that it can better slide into the knife slot 312.

[0079] For further reference, Figure 5 When the claw positioning groove 313 is provided at the front end of the knife clamping groove 312, the claw positioning groove 313 passes through the front side wall 312a of the knife clamping groove and is connected with the knife clamping groove 312. In this embodiment, the claw positioning groove 313 is opened at the front end of the knife clamping groove 312, which helps to make the knife clamping groove 312 close to the receiving frame 320, so that the position of the tool changing fixture 200 clamping the knife handle body 310 is closer to the rear end portion 311, thereby improving the stability of the clamping knife handle body 310 during the process of inserting it into the ultrasonic spindle 100.

[0080] refer to Figure 11 In other embodiments, when the claw positioning groove 313 is provided at the rear end of the knife slot 312, the claw positioning groove 313 passes through the knife rear side wall 312b; Figure 12 When the front and rear ends of the knife slot 312 are both provided with claw positioning grooves 313, the two claw positioning grooves 313 respectively pass through the front and rear ends of the knife slot 312. At the same time, when processing the two claw positioning grooves 313, they can be processed and formed at one time, and the rear end surface of the claw positioning groove 313 is an arc surface, which improves processing efficiency.

[0081] In order to further improve the reliability of positioning the ultrasonic shank 300 and the ultrasonic spindle 100, spindle positioning grooves 314 are symmetrically arranged at both radial ends of the shank body 310. In addition, in order to facilitate the tool changing claws 220 to clamp from different directions and position with the shank body 310 through the positioning block 240, claw positioning grooves 313 are symmetrically arranged at both radial ends of the shank body 310.

[0082] refer to Figure 1-Figure 3 In this embodiment, the ultrasonic spindle 100 further includes a front end cover 140, the spindle housing 110 has a first air channel 111, the front end cover 140 is disposed at the front end of the spindle housing 110 and is disposed around the rotating shaft 120, an air cavity is provided between the inner side of the front end cover 140 and the outer side of the rotating shaft 120, and the front end cover 140 has a second air channel 141 connecting the first air channel 111 and the air cavity, wherein a first gap 150 connected to the air cavity is formed between the inner side of the transmitting frame 130 and the outer side of the tool handle body 310, and a second gap 160 connected to the first gap 150 is formed between the front end of the transmitting frame 130 and the rear end of the receiving frame 320;

[0083] As a result, the gas entering the first air channel 111 is blown toward the receiving frame 320 through the second air channel 141, the air cavity and the first gap 150, and then blown out from the second gap 160 between the receiving frame 320 and the transmitting frame 130, so as to blow away the dust, impurities or liquid on the receiving frame 320 to keep the second gap 160 clean without affecting the wireless power transmission between the ultrasonic wireless transmitting device and the ultrasonic wireless receiving device arranged on the transmitting frame 130 and the receiving frame 320. At the same time, the gas forms a positive pressure seal to prevent external dust and impurities from entering the interior of the ultrasonic spindle 100 through the first gap 150 and the second gap 160; in addition, the gas can also cool the receiving frame 320 and the shank body 310.

[0084] Furthermore, since the spindle positioning groove 314 is located on the inner side of the launching frame 130 when the rear end portion 311 is inserted into the mounting hole 122, when the positioning front side wall 314a of the spindle positioning groove 314 in this embodiment is arranged at the rear end of the receiving frame 320, it avoids the airflow from the first gap 150 to the second gap 160 through the gap formed between the tool handle body 310 and the receiving frame 320 to generate wind noise or blow dust into the gap for accumulation, thereby reducing the noise generated by the operation of the ultrasonic processing equipment, and better realizing the positive pressure sealing in the second gap 160, avoiding the airflow from the spindle positioning groove 314 to blow into the claw positioning groove 313 and outflow, reducing the effect of the positive pressure sealing in the second gap 160.

[0085] A third gap 170 is formed between the inner side of the launching frame 130 and the outer side of the rotating shaft 120 , and the air cavity, the third gap 170 and the first gap 150 are connected in sequence.

[0086] Furthermore, in order to allow the air entering the air cavity to be blown toward the rotating shaft 120 evenly and powerfully, a ventilation ring 180 is provided in the air cavity around the rotating shaft 120, and an air gap communicating with the first gap 150 is formed between the inner side of the ventilation ring 180 and the outer side of the rotating shaft 120. Figure 8, the ventilation ring 180 is provided with a ventilation hole connecting the second air channel 141 and the air gap; at the same time, in order to allow the air flow after the second air channel 141 enters the air cavity to flow along the circumferential direction of the rotating shaft 120, refer to Figure 3 、 Figure 4 、 Figure 7 and Figure 8 A first annular groove 142 is provided on the inner side of the front end cover 140, a second annular groove 182 is provided on the inner side of the ventilation ring 180, and the second air passage 141, the first annular groove 142, the ventilation hole, the second annular groove 182 and the air gap are connected in sequence.

[0087] Specifically, there are multiple vent holes that are evenly arranged along the circumference of the vent ring 180 , further enabling airflow to blow toward the rotating shaft 120 from multiple directions along the circumference of the rotating shaft 120 .

[0088] refer to Figure 2 and Figure 9 In this embodiment, the rotating shaft 120 includes a shaft body 123 and a positioning ring 124. The positioning ring 124 is sleeved and fixed on the outer periphery of the shaft body 123. The front end of the positioning ring 124 is provided with a positioning portion 121 protruding from the front end surface of the shaft body 123 to facilitate the replacement of the positioning ring 124, thereby reducing the maintenance cost of the ultrasonic main shaft 100 due to wear and tear.

[0089] refer to Figure 13 In this embodiment, the tool holder body 310 includes a spindle positioning portion 330, and a spindle positioning groove 314 is provided on the outer periphery of the spindle positioning portion 330. At this time, the radius of the spindle positioning portion 330 is R, and the arc length formed by the circumferential ends of the opening of the spindle positioning groove 314 along the radial direction of the spindle positioning portion 330 along the outer periphery of the spindle positioning portion 330 is C, 0.3≤C / R≤0.8, and the maximum groove depth of the spindle positioning groove 314 along the radial direction of the spindle positioning portion 330 is H, 0.2≤H / R≤0.33, so that the spindle positioning After the size of the groove 314 and the size of the handle body 310 satisfy the above-mentioned relationship, the wind noise generated by the setting of the spindle positioning groove 314 can be reduced when the handle body 310 is connected to the ultrasonic spindle 100 and is in a rotating state. At the same time, the handle body 310 has better stability during operation, and the handle body 310 has reasonable strength at the position where the spindle positioning groove 314 is opened, so that the size of the spindle positioning groove 314 opened on the handle body 310 is more reasonably coordinated with the overall structure of the handle body 310.

[0090] Furthermore, when 0.5≤C / H≤2.7, 4.5≤H≤20, the structure of the spindle positioning groove 314 can be made more reasonable, and at the same time, the positioning portion 330 inserted into the spindle positioning groove 314 can have the strength to drive the ultrasonic shank 300 of corresponding different volumes when realizing circumferential positioning, and provide the torque required for the rotation of the ultrasonic shank 300; at the same time, the groove depth H and arc length C of the spindle positioning groove 314 satisfy the above relationship. During the rotation of the shank body 310, the airflow can enter the spindle positioning groove due to the negative pressure and flow out in a gentle flow curve, so that the airflow can flow more smoothly in the spindle positioning groove 314, reducing the pressure caused by the airflow. The irregular vibration of the airflow in the main shaft positioning groove 314 produces strong wind noise; at the same time, since the ultrasonic shank 300 in this embodiment is matched with the ultrasonic main shaft 100, the main shaft positioning groove 314 is arranged on the inner side of the launch frame, that is, the main shaft positioning groove 314 corresponds to the first gap 150. When the main shaft positioning groove 314 satisfies the above relationship, when the ultrasonic shank 300 is matched with the ultrasonic main shaft 100, when the airflow passes through the first gap 150, the setting of the main shaft positioning groove 314 can reduce the impact on the airflow in the first gap 150, and achieve a good positive pressure sealing effect in the first gap 150; further preferably, 1.2≤C / H≤2.6.

[0091] Based on the above structure, the ultrasonic tool holder 300 avoids interference between the tool changing fixture 200 and the ultrasonic spindle 100 during the tool changing process, thereby realizing automatic tool changing of the ultrasonic tool holder 300. At the same time, the ultrasonic spindle 100 can be installed with a launch frame 130 with a full-ring structure to achieve stable output of the ultrasonic processing equipment and generate a larger amplitude, thereby improving processing efficiency and being applicable to the processing of more types of products.

[0092] This specification discloses the present application with reference to the accompanying drawings and also enables those skilled in the art to practice the present application, including making and using any device or system, employing suitable materials, and using any combined methods. The scope of the present application is defined by the claimed technical solution and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the claimed technical solution, or such other examples include equivalent structural elements that are not substantially different from the literal language of the claimed technical solution, such other examples should be deemed to be within the scope of protection determined by the claimed technical solution.

Claims

1. An ultrasonic tool handle, which is used to be inserted into an ultrasonic main shaft and cooperates with the ultrasonic main shaft to form a first gap and a second gap for positive pressure sealing, and the end of the ultrasonic tool handle used for processing is the front end, and the end of the ultrasonic tool handle axially away from the front end is the rear end, characterized in that: include: A tool handle body having a rear end portion for being inserted into an ultrasonic spindle, wherein the outer periphery of the tool handle body is provided with a tool clamping groove, a claw positioning groove for circumferentially positioning the tool-changing claws, and a spindle positioning groove opening toward the rear end portion for circumferentially positioning the ultrasonic spindle; and A receiving frame is sleeved and fixed on the outer periphery of the tool handle body, and the spindle positioning groove and the tool clamping groove are respectively provided on both sides of the axial direction of the receiving frame; Wherein, the front end and / or rear end of the knife clamping slot is provided with the claw positioning slot, and the claw positioning slot is provided at the front end of the receiving frame; The tool holder body includes a spindle positioning portion, the spindle positioning groove is formed on the outer circumference of the spindle positioning portion, the radius of the spindle positioning portion is R, the arc length formed by the circumferential ends of the spindle positioning groove along the outer circumference of the spindle positioning portion along the radial direction of the spindle positioning portion is C, 0.3≤C / R≤0.8, and the maximum groove depth of the spindle positioning groove along the radial direction of the spindle positioning portion is H, 0.2≤H / R≤0.33; The spindle positioning groove has a positioning front side wall, the positioning front side wall is located at the front end of the spindle positioning groove, and the positioning front side wall is arranged at the rear end of the rear end surface of the receiving frame or is flush with the rear end surface of the receiving frame; The spindle positioning groove can cooperate with the first gap and the second gap to reduce the noise generated when the ultrasonic spindle and the ultrasonic tool handle cooperate with each other and improve the positive pressure sealing effect.

2. The ultrasonic knife handle according to claim 1, characterized in that: The main shaft positioning groove has a first side wall and a second side wall which are arranged opposite to each other and used for circumferential positioning with the ultrasonic main shaft.

3. The ultrasonic knife handle according to claim 2, characterized in that: The first side wall, the positioning front side wall and the second side wall are connected in a smooth transition sequence.

4. The ultrasonic knife handle according to any one of claims 1 to 3, characterized in that: The positioning front side wall is an arc side wall protruding toward the front end direction of the handle body.

5. The ultrasonic knife handle according to claim 1, characterized in that: The knife clamping groove is arranged on the outer periphery of the knife handle body.

6. The ultrasonic knife handle according to claim 1 or 5, characterized in that: The knife slot has a knife front side wall and a knife rear side wall that are arranged opposite to each other, and the knife front side wall and the knife rear side wall are both inclined in a direction away from the knife slot.

7. The ultrasonic knife handle according to claim 6, characterized in that: The clamping claw positioning groove passes through the front side wall of the clamping knife or the rear side wall of the clamping knife and is communicated with the clamping knife groove.

8. The ultrasonic knife handle according to claim 1, characterized in that: A communicating groove is provided on the outer periphery of the tool handle body, and the spindle positioning groove is communicated with the claw positioning groove through the communicating groove.

9. The ultrasonic knife handle according to claim 1 or 8, characterized in that: The claw positioning grooves and the spindle positioning grooves are symmetrically arranged at both ends of the handle body in a radial direction.

10. The ultrasonic knife handle according to claim 1, characterized in that: 0.5≤C / H≤2.7, among which, 4.5≤H≤20.

11. An ultrasonic processing device, characterized in that: The ultrasonic tool holder comprises an ultrasonic spindle and the ultrasonic tool holder according to any one of claims 1 to 10, wherein the ultrasonic spindle comprises: Spindle housing; A rotating shaft rotatably inserted into the spindle housing, wherein the front end of the rotating shaft is provided with a positioning portion and a mounting hole for inserting the rear end portion; a launching frame, which is arranged at the front end of the spindle housing and surrounds the rotating shaft; Wherein, when the rear end portion is inserted into the mounting hole, the positioning portion is inserted into the main shaft positioning groove, the main shaft positioning groove is located on the inner side of the launching frame, and the receiving frame is arranged opposite to the launching frame.

12. The ultrasonic machining device according to claim 11, wherein: The ultrasonic spindle further includes a front end cover, the spindle housing having a first air passage, the front end cover being disposed at the front end of the spindle housing and surrounding the rotating shaft, an air cavity being disposed between the inner side of the front end cover and the outer side of the rotating shaft, and the front end cover having a second air passage communicating with the first air passage and the air cavity; A first gap communicating with the air cavity is formed between the inner side of the launching frame and the outer side of the shank body, and a second gap communicating with the first gap is formed between the front end of the launching frame and the rear end of the receiving frame.

13. The ultrasonic machining device according to claim 12, wherein: A third gap is formed between the inner side of the launching frame and the outer side of the rotating shaft, and the air cavity, the third gap and the first gap are connected in sequence.

14. The ultrasonic machining device according to claim 12, wherein: A ventilation ring is provided in the air cavity and is arranged around the rotating shaft. An air gap connected to the first gap is formed between the inner side of the ventilation ring and the outer side of the rotating shaft. The ventilation ring has a ventilation hole connecting the second air channel and the air gap.

15. The ultrasonic machining device according to claim 14, wherein: A first annular groove is formed on the inner side of the front end cover, a second annular groove is formed on the inner side of the ventilation ring, and the second air passage, the first annular groove, the ventilation hole, the second annular groove and the air gap are connected in sequence.

16. The ultrasonic machining device according to claim 14, wherein: There are multiple vent holes, which are evenly arranged along the circumference of the vent ring.

17. The ultrasonic processing device according to any one of claims 11 to 16, characterized in that: The rotating shaft includes a shaft body and a positioning ring. The positioning ring is sleeved and fixed on the outer periphery of the shaft body. The front end of the positioning ring is provided with the positioning portion protruding from the front end surface of the shaft body.

18. An ultrasonic processing device, characterized in that: The ultrasonic machining device comprises a tool changing fixture and the ultrasonic machining device according to any one of claims 11 to 17, wherein the tool changing fixture comprises a swing arm and a tool changing claw connected to one end of the swing arm, the tool changing claw having a slot for accommodating the ultrasonic tool holder, and the tool changing claw is provided with a positioning block protruding from an inner side wall of the slot; When the ultrasonic tool handle is clamped in the clamping slot, the positioning block is inserted into the clamping claw positioning slot, the tool changing fixture drives the ultrasonic tool handle to move to the bottom of the ultrasonic spindle and inserts the rear end into the mounting hole, and the positioning portion is inserted into the spindle positioning slot.

19. The ultrasonic processing equipment according to claim 18, characterized in that The tool-changing clamping claw includes a first side claw and a second side claw arranged opposite to each other, the clamping slot is formed between the first side claw and the second side claw, and the first side claw and the second side claw both have an elastic part. When the ultrasonic tool handle is accommodated in the clamping slot, the elastic part is embedded in the tool clamping slot and presses the ultrasonic tool handle into the clamping slot.

20. The ultrasonic processing equipment according to claim 19, characterized in that The elastic portion has an elastic end that abuts against the inner wall of the knife clamping groove, and the elastic end is spherical.

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