processing device

Abstract

The application discloses a processing device, comprising a tool holder and a tool; the tool comprises a tool handle, a tool head and an ultrasonic driving part; the tool handle is connected to the tool holder, and the tool handle can rotate with the tool holder and can move axially along the tool relative to the tool holder; the tool head is arranged on the tool handle and is configured to process a workpiece when rotating with the tool handle; the ultrasonic driving part is arranged on the tool handle and / or the tool head and is configured to drive the tool handle and the tool head to reciprocate ultrasonic vibration axially along the tool relative to the tool holder. In a processing area, one of two adjacent layers of plates is partially melted by heat and flows to cover a connecting part of the two adjacent layers of plates by extrusion of the tool head, so that the problem that the connecting part of the two adjacent layers of plates is separated from each other after processing of the workpiece is avoided, and the waterproof performance of the connecting part of the two adjacent layers of plates in the processing area is improved.

Description

Technical Field

[0001] This application belongs to the field of drilling technology, and specifically relates to a processing device. Background Technology

[0002] Drilling can be performed on workpieces by controlling the rotation and downward movement of the cutting tool using a CNC machine tool. When the workpiece is formed by stacking at least two layers of sheet metal, drilling can easily cause cracking or separation of adjacent layers near the hole, reducing the workpiece's waterproof function. Utility Model Content

[0003] This application provides a processing apparatus designed to improve the technical problem that adjacent layers of sheet metal near the processing area are prone to separation after processing.

[0004] This application provides a processing apparatus, including a tool holder and a cutting tool; the cutting tool includes a tool handle, a cutting head, and an ultrasonic drive; the tool handle is connected to the tool holder, and the tool handle can rotate with the tool holder and can also move relative to the tool holder along the cutting tool axis; the cutting head is disposed on the tool handle and is configured to process a workpiece when rotating together with the tool handle; the ultrasonic drive is disposed on the tool handle and / or the cutting head and is configured to drive the tool handle and the cutting head to reciprocate ultrasonically relative to the tool holder along the cutting tool axis.

[0005] In the aforementioned processing apparatus, when the tool holder drives the tool to rotate along the tool axis, the tool head can process the workpiece. During the workpiece processing process, the ultrasonic drive drives the tool to reciprocate relative to the tool holder along the tool axis, causing the tool head to vibrate relative to the workpiece along the tool axis to generate frictional heat, thereby raising the temperature of the workpiece processing area. In the processing area, one of the two adjacent layers of sheet metal melts under heat and is squeezed and flowed by the tool head to cover the joint between the two adjacent layers, thus preventing the joint between the two adjacent layers of sheet metal from separating after processing and improving the waterproof performance of the joint between the two adjacent layers of sheet metal in the processing area.

[0006] In some embodiments, the cutting tool further includes a connector that connects the handle and the cutting head respectively, and the connector is configured to mount an ultrasonic actuator.

[0007] An ultrasonic drive is installed on the connector that connects the tool holder and the tool head, so that the connector can vibrate together with the ultrasonic drive, and drive the tool head and the tool holder to vibrate together along the tool axis relative to the tool shank.

[0008] In some embodiments, the connector includes an annular sidewall, a bottom plate, and a cover plate, with the bottom plate and cover plate respectively disposed at opposite ends of the annular sidewall along the axial direction of the tool; the annular sidewall, bottom plate, and cover plate together form a closed receiving space, and the ultrasonic drive is disposed in the receiving space.

[0009] The ultrasonic drive is supported by a base plate, and the ultrasonic drive is enclosed in a closed housing space by annular sidewalls and a cover plate to protect the ultrasonic drive and prevent it from being damaged by oil.

[0010] In some embodiments, the cutting tool further includes an elastic element that connects the connector and the handle respectively and is configured to elastically deform when the ultrasonic actuator vibrates.

[0011] The elastic element can elastically deform when the connecting part vibrates along the tool axis and generate additional thrust when it elastically rebounds, thereby amplifying the vibration of the ultrasonic drive, increasing the vibration amplitude of the tool holder connected to the elastic element, and thus increasing the vibration amplitude of the tool head relative to the workpiece to generate more frictional heat.

[0012] In some embodiments, the handle includes a first mounting portion and a second mounting portion connected to each other, the first mounting portion being configured to connect to the handle and the second mounting portion being configured to connect to an elastic element.

[0013] The first and second mounting parts are respectively adapted to the structure of the handle and the elastic element, making the connection between the handle and the handle and the elastic element convenient and efficient.

[0014] In some embodiments, the elastic member is connected to a fastener, which passes through the second mounting portion and is configured to provide a gap between the second mounting portion and the elastic member.

[0015] After the fastener connection mounting part is connected to the elastic element, there is a gap. The gap can provide space for the elastic deformation of the elastic element and prevent the elastic deformation of the elastic element from squeezing the second mounting part and causing damage to the tool handle.

[0016] In some embodiments, the ultrasonic actuator is electrically connected to a control element, which is configured to control the vibration frequency of the ultrasonic actuator.

[0017] The vibration frequency of the ultrasonic drive along the tool axis is controlled by the control unit to adjust the vibration frequency of the tool head relative to the workpiece, so that the temperature of the workpiece processing area is raised to the preset temperature.

[0018] In some embodiments, the ultrasonic drive is an ultrasonic transducer, and the control is an ultrasonic generator. The ultrasonic generator drives the ultrasonic transducer to work, causing the cutter head to reciprocate along the cutter axis relative to the cutter shank.

[0019] An ultrasonic generator can convert ordinary alternating current into high-frequency alternating current signals. The ultrasonic transducer, through the inverse piezoelectric effect, converts the high-frequency electrical signals sent by the ultrasonic generator into high-frequency mechanical vibrations of a specified frequency, thereby driving the tool handle and the tool head to reciprocate along the tool axis relative to the tool holder.

[0020] In some embodiments, the drill bit is a thermal drill bit.

[0021] During the machining process, thermal drill bits can quickly soften the workpiece using the heat generated by friction, making it easier to machine and improving machining efficiency.

[0022] In some embodiments, the machining apparatus further includes a power unit connected to a tool holder and configured to drive the tool holder to rotate and move along the tool axis.

[0023] The power unit serves as the power source for the rotation or axial movement of the tool holder. By driving the tool holder axially, the power unit can bring the tool closer to the workpiece, thereby adjusting the distance between the tool tip and the workpiece. By driving the tool holder to rotate, the power unit can simultaneously drive the tool holder to rotate and move axially to adjust the distance between the tool tip and the workpiece, thus enabling the machining of the workpiece. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a processing apparatus in one embodiment of this application.

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of a cutting tool.

[0026] Figure 3 yes Figure 2 A cross-sectional view of the cutting tool along point III-III.

[0027] Figure 4 yes Figure 1 A schematic diagram of the workpiece after processing by the machining equipment.

[0028] Explanation of main component symbols 100. Cutting tool; 10. Tool handle; 11. First mounting part; 12. Second mounting part; 121. Clearance; 20. Tool head; 30. Ultrasonic drive component; 40. Connector; 41. Annular sidewall; 42. Base plate; 43. Cover plate; 50. Elastic component; 51. Fastener; 60. Control component; 200. Machining device; 210. Power unit; 220. Tool holder; 300. Workpiece; 310. First plate; 320. Second plate; 330. Reinforcing part; 340. Target hole; Z, Axial axis.

[0029] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0031] In the description of the embodiments of this application, the technical terms "first", "second", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0032] In the description of the embodiments of this application, the term "perpendicular" is used to describe the ideal state between two components. In actual production or use, two components may be in a state that is approximately perpendicular. The term "parallel" is used to describe the ideal state between two components. In actual production or use, two components may be in a state that is approximately parallel.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0035] Drilling can be performed on workpieces by controlling the rotation and downward movement of the cutting tool using a CNC machine tool. When the workpiece is formed by stacking at least two layers of sheet metal, drilling can easily cause cracking or separation of adjacent layers near the hole, reducing the workpiece's waterproof function.

[0036] An embodiment of this application provides a processing apparatus, including a tool holder and a cutting tool; the cutting tool includes a tool handle, a cutting head, and an ultrasonic drive; the tool handle is connected to the tool holder, and the tool handle can rotate with the tool holder and can also move relative to the tool holder along the cutting tool axial direction; the cutting head is disposed on the tool handle and is configured to process a workpiece when rotating together with the tool handle; the ultrasonic drive is disposed on the tool handle and / or the cutting head and is configured to drive the tool handle and the cutting head to reciprocate ultrasonically relative to the tool holder along the cutting tool axial direction.

[0037] In the aforementioned processing apparatus, when the tool holder drives the tool to rotate along the tool axis, the tool head can process the workpiece. During the workpiece processing process, the ultrasonic drive drives the tool to reciprocate relative to the tool holder along the tool axis, causing the tool head to vibrate relative to the workpiece along the tool axis to generate frictional heat, thereby raising the temperature of the workpiece processing area. In the processing area, one of the two adjacent layers of sheet metal melts under heat and is squeezed and flowed by the tool head to cover the joint between the two adjacent layers, thus preventing the joint between the two adjacent layers of sheet metal from separating after processing and improving the waterproof performance of the joint between the two adjacent layers of sheet metal in the processing area.

[0038] The embodiments of this application will be further described below with reference to the accompanying drawings. Unless otherwise specified, the various embodiments in this application can be combined with each other.

[0039] Please see Figure 1 This application provides a machining apparatus 200, including a power unit 210, a tool holder 220, and a cutting tool 100. The power unit 210 is connected to the tool holder 220, and the cutting tool 100 is detachably connected to the tool holder 220. The power unit 210 is configured to drive the tool holder 220 to rotate and to drive the tool holder 220 to move along the cutting tool axis Z (hereinafter referred to as axis Z), so that the cutting tool 100 can move closer to the workpiece 300 and rotate relative to the workpiece 300 to machine the workpiece 300 (see Figure 100). Figure 4 For example, machining workpiece 300 refers to the tool 100 drilling a hole in workpiece 300.

[0040] In some embodiments, the power unit 210 is a CNC machine tool, and the tool holder 220 is fixedly connected to the spindle of the CNC machine tool (not shown), and moves along the Z-axis and rotates around the spindle under the drive of the CNC machine tool. The spindle is parallel to the Z-axis, and the axis of the tool coincides with the axis of the spindle.

[0041] Please combine Figure 2 and Figure 3 In some embodiments, the cutting tool 100 includes a handle 10, a cutting head 20, and an ultrasonic actuator 30. The handle 10 is connected to the shank 220 and is capable of rotating around a spindle with the shank 220, and can also move axially (Z) relative to the shank 220. The cutting head 20 is disposed on the handle 10, so that the cutting head 20 and the handle 10 can move together with the shank 220. The ultrasonic actuator 30 is disposed on the cutting head 20 and / or the handle 10 and is configured to drive the handle 10 and the cutting head 20 to reciprocate axially (Z) relative to the shank 220.

[0042] Please see Figure 4 In some embodiments, the workpiece 300 includes at least two stacked plates, which are joined together by hot pressing. The following description pertains to the workpiece 300 comprising two plates.

[0043] When the sheet material consists of two layers, the upper sheet material is defined as the first sheet material 310, and the lower sheet material is defined as the second sheet material 320. The first sheet material 310 and the second sheet material 320 are made of different materials. In some embodiments, the first sheet material 310 is titanium, and the second sheet material 320 is aluminum. In other embodiments, the first sheet material 310 may be aluminum, and the second sheet material 320 may be titanium; or other metallic materials may be used.

[0044] The workpiece 300 has a bottom hole, which is a stepped hole. The diameter of the bottom hole on the first plate 310 is larger than the diameter of the bottom hole on the second plate 320.

[0045] When the power unit 210 drives the tool holder 220 to move along the Z-axis and rotate around the spindle, the tool 100 moves toward the workpiece 300 together with the tool holder 220 to get closer to the workpiece 300. At the same time, the tool 100 rotates around the spindle together with the tool holder 220, so that the tool head 20 is inserted into the bottom hole and rotates and moves in the bottom hole to process the bottom hole, so that the diameter of the bottom hole on the first plate 310 and the second plate 320 is enlarged, thereby obtaining the desired target hole 340.

[0046] During the machining of the bottom hole by the cutter head 20, the ultrasonic drive 30 drives the cutter head 20 and the tool handle 10 to reciprocate along the Z-axis relative to the tool holder 220, causing the cutter head 20 to vibrate along the Z-axis relative to the workpiece 300 to generate frictional heat, thus raising the temperature of the inner wall of the bottom hole. The melting point of the first plate 310 is higher than that of the second plate 320. When the temperature rises to a preset temperature, the area of ​​the second plate 320 within the bottom hole melts. The molten material is squeezed and flows by the cutter head 20 to coat the joint between the first plate 310 and the second plate 320, thereby preventing the workpiece 300 from separating from the joint after drilling. This improves the waterproof performance of the joint between the first plate 310 and the second plate 320 in the machining area. The machining area of ​​the workpiece 300 is the area where the bottom hole is located. For example, the preset temperature is 600℃-800℃.

[0047] In this application, the vibration of the cutter head 20 relative to the workpiece 300 along the axial Z is actually the movement of the cutter head 20 relative to the workpiece 300 along the axial Z. Since the movement amplitude of the cutter head 20 is small (0.001um-0.002um), it is referred to as vibration in this application.

[0048] In some embodiments, after the molten material solidifies, a cylindrical reinforcing portion 330 can be formed within the bottom hole. The inner periphery of the reinforcing portion 330 is the desired target hole 340. The outer surface of the reinforcing portion 330 is solidified onto the first plate 310, the second plate 320, and the connection between the first plate 310 and the second plate 320 to improve the waterproof performance of the connection between the first plate 310 and the second plate 320 in the processing area. Exemplarily, the target hole 340 is a straight hole.

[0049] Please see Figure 2 and Figure 3 In some embodiments, the handle 10 includes a first mounting portion 11 and a second mounting portion 12, the second mounting portion 12 being connected to the first mounting portion 11. In some embodiments, the first mounting portion 11 and the second mounting portion 12 are integrally formed. In other embodiments, the second mounting portion 12 may also be welded to the first mounting portion 11. The first mounting portion 11 is configured to connect to the handle 220.

[0050] The first mounting portion 11 can be cylindrical or conical; this application does not limit this. The shape of the first mounting portion 11 is adapted to the structure of the knife handle 220, so that the first mounting portion 11 can be inserted and connected to the knife handle 220, facilitating the insertion and engagement of the knife handle 10 and the knife handle 220.

[0051] In some implementations, after the first mounting portion 11 is inserted into the tool holder 220, a locking structure locks the first mounting portion 11 to the tool holder 220. Exemplarily, the locking structure (not shown) includes a bolt or pin, with through holes in the tool holder 220 and the first mounting portion 11. The bolt or pin can be inserted into the through holes to position the tool holder 220 and the first mounting portion 11, preventing the first mounting portion 11 from excessively moving downward relative to the tool holder 220 and thus detaching from the tool holder 220. The through holes in the first mounting portion 11 can extend axially (Z), allowing the first mounting portion 11 to reciprocate ultrasonically relative to the tool holder 220 along the Z-axis, and allowing the cutting tool 100 to reciprocate ultrasonically relative to the tool holder 220 along the Z-axis. Furthermore, the locking structure can also be other locks, and this application does not limit this.

[0052] In some embodiments, the drill bit 20 is a thermal drill bit.

[0053] Please see Figure 4 When the drill bit 20 rotates and moves within the bottom hole, the thermal drill bit can quickly soften the second plate 320 by utilizing the frictional heat generated between its outer surface and the inner wall of the bottom hole, making it easier to enlarge the diameter of the bottom hole on the first plate 310 and the second plate 320. At the same time, the thermal drill bit can also squeeze the softened material, causing the softened material to flow and cover the first plate 310, the second plate 320, and the connection between the first plate 310 and the second plate 320, and form a reinforced part 330 after solidification, so as to obtain the desired target hole 340.

[0054] Compared to ordinary drill bits, thermal drill bits can integrally form the reinforced part 330 and workpiece 300 in the bottom hole while drilling, resulting in high processing efficiency.

[0055] Please see Figure 2 In some embodiments, the cutting tool 100 includes a connector 40 and is configured to mount an ultrasonic actuator 30. When the ultrasonic actuator 30 vibrates along the axial Z-axis, the connector 40 vibrates together with the ultrasonic actuator 30. The connector 40 connects the handle 10 and the cutting head 20, respectively, so that the cutting head 20 and the handle 10 vibrate together along the axial Z-axis with the connector 40.

[0056] Please see Figure 3In some embodiments, the connector 40 includes an annular sidewall 41, a base plate 42, and a cover plate 43. The base plate 42 and the cover plate 43 are respectively disposed at opposite ends of the annular sidewall 41 along the axial direction Z, and the annular sidewall 41, the base plate 42, and the cover plate 43 together form a closed receiving space. The ultrasonic drive 30 is disposed in the receiving space to protect the ultrasonic drive 30.

[0057] The ultrasonic drive component 30 is supported by the base plate 42, and the ultrasonic drive component 30 is enclosed in a closed receiving space by the annular side wall 41 and the cover plate 43 to protect the ultrasonic drive component 30 and prevent it from being damaged by oil.

[0058] In some embodiments, the annular sidewall 41 can be fixed to the base plate 42 and the cover plate 43 by welding, or they can be connected to each other by reinforcements (not shown). Reinforcements include bolts, screws, or threaded rods. The annular sidewall 41 is an integrally formed structure (such as a cylinder or square tube), or it can be integrally formed with the base plate 42. The cover plate 43 is connected to the top of the sidewall by welding or reinforcement to increase the sealing of the accommodating space.

[0059] In some embodiments, the cutting tool 100 further includes an elastic element 50, which connects the connector 40 and the handle 10, respectively. The elastic element 50 is configured to deform when the ultrasonic actuator 30 vibrates. In the illustrated embodiment, the elastic element 50 is connected to the handle 10 via a second mounting portion 12 and to the connector 40 via a cover plate 43.

[0060] The elastic element 50 can elastically deform when the connecting element 40 vibrates along the axial Z direction, and generate additional thrust when it elastically rebounds, thereby amplifying the vibration of the ultrasonic drive 30, increasing the vibration amplitude of the handle 10 connected to the elastic element 50, and thus increasing the vibration amplitude of the cutter head 20 relative to the workpiece 300 to generate more frictional heat.

[0061] In some embodiments, along the Z-axis, both ends of the elastic element 50 are respectively fixed to the cover plate 43 and the second mounting portion 12 by fasteners 51. The fasteners 51 include bolts, screws, or threaded rods. In other embodiments, the elastic element 50 is bonded to the cover plate 43.

[0062] The elastic element 50 is fixed between the second mounting part 12 and the cover plate 43 by fastener 51, which is convenient to operate, low in cost and easy to replace.

[0063] The second mounting portion 12 is disc-shaped, and its shape is adapted to the structure of the upper surface of the elastic member 50, allowing the second mounting portion 12 to be stacked on the elastic member 50, facilitating the fastener 51 to securely connect the second mounting portion 12 and the elastic member 50. In some embodiments, the second mounting portion 12 and the elastic member 50 are connected by fasteners 51, with multiple fasteners 51 arranged in a ring shape and positioned close to the outer periphery of the second mounting portion 12, making the connection between the second mounting portion 12 and the elastic member 50 more secure.

[0064] In some embodiments, the elastic element 50 includes a silicone element, a latex element, or a rubber element, enabling the elastic element 50 to deform and rebound.

[0065] In some embodiments, the elastic member 50 and the second mounting portion 12 are connected by a fastener 51, and a gap 121 is provided between the elastic member 50 and the second mounting portion 12. The gap 121 provides space for the elastic deformation of the elastic member 50, preventing the elastic deformation of the elastic member 50 from squeezing the second mounting portion 12 and causing damage to the handle 10.

[0066] In some embodiments, the gap 121 along the axial direction Z is 0.03mm-0.05mm.

[0067] Please see Figure 1 In some embodiments, the ultrasonic actuator 30 is electrically connected to a control element 60, which is configured to control the ultrasonic actuator 30 to reciprocate along the axial Z direction.

[0068] The vibration frequency of the ultrasonic drive 30 along the Z-axis is controlled by the control component 60 to adjust the vibration frequency of the cutter head 20 relative to the workpiece 300, thereby raising the temperature of the processing area of ​​the workpiece 300 to a preset temperature. In some embodiments, the vibration frequency of the ultrasonic drive 30 is 24,000 times / min to 26,000 times / min.

[0069] In some embodiments, the vibration amplitude of the ultrasonic drive 30 along the Z-axis is 0.001µm-0.002µm.

[0070] In some embodiments, the ultrasonic drive 30 is an ultrasonic transducer, and the control 60 is an ultrasonic generator. The ultrasonic generator drives the ultrasonic transducer to work, causing the cutter head 20 to reciprocate along the Z-axis relative to the cutter shank 220.

[0071] The ultrasonic generator converts ordinary alternating current into a high-frequency alternating current signal. The ultrasonic transducer, through the inverse piezoelectric effect, converts the high-frequency electrical signal from the ultrasonic generator into high-frequency mechanical vibration at a specified frequency, driving the handle 10 and the blade head 20 to reciprocate along the Z-axis relative to the handle 220. The ultrasonic generator is electrically connected to the piezoelectric ceramic via wires that pass through the cover plate 43. Understandably, the ultrasonic transducer comprises a piezoelectric ceramic stack formed by multiple ceramic sheets stacked together.

[0072] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A processing apparatus, characterized in that, Includes a handle and a cutting tool; the cutting tool includes: The handle is connected to the shank, and the handle can rotate with the shank and can also move relative to the shank along the axis of the tool. A cutting head is disposed on the tool holder and configured to machine a workpiece when rotating together with the tool holder; An ultrasonic actuator is disposed on the handle and / or the head of the cutter and is configured to drive the handle and the head of the cutter to reciprocate ultrasonically relative to the shank along the axial direction of the cutter.

2. The processing apparatus as described in claim 1, characterized in that: The cutting tool also includes a connector that connects the handle and the cutting head, and the connector is configured to mount the ultrasonic drive.

3. The processing apparatus as described in claim 2, characterized in that: The connector includes an annular sidewall, a base plate, and a cover plate. The base plate and the cover plate are respectively located at opposite ends of the annular sidewall along the axial direction of the tool. The annular sidewall, the base plate, and the cover plate together form a closed receiving space, and the ultrasonic drive is located in the receiving space.

4. The processing apparatus as described in claim 2, characterized in that: The cutting tool also includes an elastic element that connects the connecting member and the handle respectively, and is configured to elastically deform when the ultrasonic drive vibrates.

5. The processing apparatus as described in claim 4, characterized in that: The knife handle includes a first mounting portion and a second mounting portion connected to each other. The first mounting portion is configured to connect to the knife handle, and the second mounting portion is configured to connect to the elastic element.

6. The processing apparatus as described in claim 5, characterized in that: The elastic element is connected to a fastener, which passes through the second mounting portion and is configured to provide a gap between the second mounting portion and the elastic element.

7. The processing apparatus as described in claim 1, characterized in that: The ultrasonic actuator is electrically connected to a control unit, which is configured to control the vibration frequency of the ultrasonic actuator.

8. The processing apparatus as described in claim 7, characterized in that: The ultrasonic driving component is an ultrasonic transducer, and the control component is an ultrasonic generator. The ultrasonic generator drives the ultrasonic transducer to work, causing the cutter head to reciprocate along the axial direction of the cutter relative to the cutter shank.

9. The processing apparatus as described in claim 1, characterized in that: The cutting head is a thermal drill bit.

10. The processing apparatus as described in claim 1, characterized in that, The machining apparatus further includes a power unit connected to the tool holder and configured to drive the tool holder to rotate and move along the tool axis.

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