Tool and machining apparatus

Abstract

The utility model discloses a tool and processing equipment belongs to machining technical field, including handle and with handle connection's tool bit, the tool bit includes the support section that sets gradually along the direction of deviating handle, with the support section connection's avoidance section, with the avoidance section connection's first processing section, with first processing section connection's second processing section, with second processing section connection's third processing section, wherein along the direction of deviating handle observes, the support section is tapered, first processing section is gradually expanded, third processing section is tapered, the avoidance section is located between support section and first processing section, and the projection of avoidance section along the direction of deviating handle in first processing section is located on first processing section. The utility model reaches the consistency and precision of improvement processing, promotes processing efficiency, can in single clamping, the technique effect of synchronous processing double face and side in tool path.

Description

Technical Field

[0001] This utility model belongs to the field of machining technology, and specifically relates to a cutting tool and machining equipment. Background Technology

[0002] Double-sided machining is widely used for products with complex geometric features, requiring the machining of the front side features first, followed by the machining of the back side. This process places strict requirements on dimensional accuracy and geometric tolerance control. In existing technologies, workpieces with specific contour features such as small bosses or grooves are typically machined in steps. First, the product is fixed in a fixture, and one tool is used to machine the front side features. Then, the fixture is removed and re-clamped for machining the back side using a different tool. However, after machining the front side features, the internal stress of the material is not fully released, resulting in insufficient structural strength. This makes the product prone to elastic or plastic deformation in subsequent processes, directly affecting the datum positioning accuracy during back side machining. This leads to uneven machining dimensions, reliance on re-clamping and positioning after disassembly, and tool changes. Controlling the tool's feed rate is also difficult, easily resulting in inconsistent height dimensions and reducing product yield. Furthermore, repeated clamping introduces positioning errors, requiring multiple trial cuts to adjust parameters, reducing production efficiency and increasing manufacturing costs. There is a lack of tools capable of simultaneously machining both sides and the sides in a single clamping and tool pass.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is the problem of poor processing consistency, poor precision, low efficiency, and difficulty in simultaneously processing both sides and the sides in a single clamping and tool movement.

[0005] To solve the above-mentioned technical problems, this utility model provides a cutting tool, which includes a shank and a cutting head connected to the shank. The cutting head includes a support section, a clearance section connected to the support section, a first processing section connected to the clearance section, a second processing section connected to the first processing section, and a third processing section connected to the second processing section, arranged sequentially along a direction away from the shank. When viewed along a direction away from the shank, the support section is tapered, the first processing section is gradually expanding, the third processing section is tapered, the clearance section is located between the support section and the first processing section, and the projection of the clearance section along a direction away from the shank onto the first processing section is located on the first processing section.

[0006] Optionally, the tool holder is cylindrical, and the central axis of the support section, the central axis of the clearance section, the central axis of the first processing section, the central axis of the second processing section, and the central axis of the third processing section are all coaxial with the central axis of the tool holder.

[0007] Optionally, the second processing segment is cylindrical, the projection of the first processing segment onto the second processing segment along a direction close to the second processing segment is located on the second processing segment, and the projection of the third processing segment onto the second processing segment along a direction close to the second processing segment is located on the second processing segment.

[0008] Optionally, the outer diameter of the clearance section gradually increases from the support section in the direction close to the first processing section, or the clearance section is provided with an annular groove that extends continuously in the circumferential direction of the clearance section, or the clearance section includes multiple stepped shaft sections connected in sequence and having different outer diameters.

[0009] Optionally, the tool holder is integrally formed with the support section, the clearance section, the first processing section, the second processing section, and the third processing section.

[0010] Optionally, the bottom of the third processing section is flat.

[0011] Optionally, when the first processing section contacts the bottom surface of the workpiece to be processed, or when the third processing section contacts the top surface of the workpiece to be processed, the distance between the clearance section and the supporting side of the workpiece to be processed is greater than 0.3 mm.

[0012] Optionally, the length of the second processing segment is greater than the length of the first processing segment, and the length of the second processing segment is greater than the length of the third processing segment.

[0013] According to another aspect of the present invention, the present invention also provides a processing device, the processing device including the aforementioned cutting tool.

[0014] Optionally, the processing equipment further includes a workpiece having a top surface to be processed, a bottom surface to be processed, and supporting side surfaces connecting the top surface to be processed and the bottom surface to be processed, wherein the top surface to be processed cooperates with the third processing section, the bottom surface to be processed cooperates with the first processing section, and the supporting side surfaces cooperate with the second processing section.

[0015] Beneficial effects:

[0016] This utility model provides a cutting tool, in which the cutting head and the tool holder are connected to each other. The cutting head comprises a support section, a clearance section, a first machining section, a second machining section, and a third machining section arranged sequentially along a direction away from the tool holder. The clearance section is connected to the support section, the first machining section is connected to the clearance section, the second machining section is connected to the first machining section, and the third machining section is connected to the second machining section. Viewed along a direction away from the tool holder, the support section is tapered, the first machining section is expanded, and the third machining section is tapered again. The clearance section is located between the support section and the first machining section, and its projection along the direction away from the tool holder falls on the first machining section. This tapered support section, the expanded first machining section, and the clearance section between the support sections create clearance space during machining, preventing unnecessary interference. Simultaneously, the expanding first machining stage adapts to the bottom curved surface contour of the product, and the contracting third machining stage adapts to the top curved surface contour, achieving progressive cutting of the top and bottom curved surfaces. The second machining stage provides a transition and adapts to the supporting side located between the top and bottom curved surfaces, ensuring uniform cutting force distribution and simultaneously completing the shaping of the top and bottom curved surfaces in a single pass. Through the synergistic effect of the first, second, and third machining stages, the tool can continuously complete the machining of the top and bottom curved surfaces in a single setup, reducing tool changes and tool setting, and minimizing machining errors and repetitive operations. This achieves the technical effect of improving machining consistency and accuracy, increasing machining efficiency, and enabling simultaneous machining of both sides and sides in a single setup and pass. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a cutting tool provided in an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the second and third machining sections in a cutting tool provided in an embodiment of the present utility model.

[0020] Figure 3 This is a structural schematic diagram of the machining state of a cutting tool provided in an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the structure of a workpiece to be processed in a cutting tool, provided as an embodiment of the present utility model.

[0022] The meanings of the labels in the attached diagram are as follows:

[0023] 1—Tool holder, 2—Tool head, 21—Support section, 22—Avoidance section, 23—First machining section, 24—Second machining section, 25—Third machining section, 3—Workpiece to be machined, 31—Top surface to be machined, 32—Bottom surface to be machined, 33—Support side. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0027] In this specification, references such as "one embodiment" or "some embodiments" mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the terms "comprising," "including," "having," and variations thereof in this specification all mean "including but not limited to," unless otherwise specifically emphasized. It should be noted that in the embodiments of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0028] It should be noted that, in the embodiments of this utility model, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. Furthermore, in the embodiments of this application, "connection" can also be understood as an electrical connection; the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this utility model are for illustrative purposes only and are not intended to limit the utility model.

[0029] The first embodiment of this utility model provides a cutting tool, please refer to... Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the structure of a cutting tool provided in an embodiment of this utility model. Figure 2 This is a schematic diagram of the structure of the second and third machining sections in a cutting tool provided in an embodiment of the present invention. Figure 3 This is a structural schematic diagram of the processing state of a cutting tool provided in an embodiment of the present invention, that is, the position state of the cutting head 2 when processing the top surface to be processed 31, the bottom surface to be processed 32 and the supporting side 33 respectively. This utility model provides a cutting tool including a handle 1 and a cutting head 2. The cutting head 2 is connected to the handle 1. The cutting head 2 includes a support section 21, a clearance section 22, a first processing section 23, a second processing section 24, and a third processing section 25. The support section 21, clearance section 22, first processing section 23, second processing section 24, and third processing section 25 are arranged sequentially in a direction away from the handle 1. The clearance section 22 is connected to the support section 21, the first processing section 23 is connected to the clearance section 22, the second processing section 24 is connected to the first processing section 23, and the third processing section 25 is connected to the second processing section 24. When viewed in a direction away from the handle 1, the support section 21 is tapered, the first processing section 23 is expanded, and the third processing section 25 is tapered. The clearance section 22 is located between the support section 21 and the first processing section 23, and the projection of the clearance section 22 in a direction away from the handle 1 onto the first processing section 23.

[0030] The support section 21 is connected to the tool holder 1. When viewed from the direction away from the tool holder 1, the support section 21 has a tapered shape, meaning that the cross-sectional dimensions of the support section 21 gradually decrease towards the direction away from the tool holder 1. The tapered structure of the support section 21 can increase the cross-sectional stiffness near the tool holder 1, resist torsional loads during machining, and also reserve space for the subsequent clearance section 22.

[0031] The first machining section 23 is connected to the distal end of the avoidance section 22. Viewed from the direction away from the tool holder 1, the first machining section 23 has a gradually expanding shape, meaning its cross-sectional dimensions gradually increase away from the tool holder 1. The avoidance section 22 connects the support section 21 and the first machining section 23. During machining, the avoidance section 22 provides lateral or axial avoidance space for the tool itself or potential machining paths, forming an avoidance space. The avoidance section 22 does not exceed the maximum contour of the first machining section 23 and is spatially covered by it, achieving effective physical interference avoidance. The first machining section 23 is positioned after the avoidance section 22. Its gradually expanding contour matches the bottom curved surface contour of the product during machining, allowing it to efficiently cut the required concave curved surface features at the bottom of the product.

[0032] The third machining section 25 is connected to the distal end of the second machining section 24. Viewed from the direction away from the tool holder 1, the third machining section 25 has a tapered shape, meaning its cross-sectional dimensions gradually decrease towards the direction away from the tool holder 1. The second machining section 24 smoothly connects the expanding first machining section 23 and the tapering third machining section 25, machining the supporting side 33 located between the top and bottom curved surfaces of the product. This ensures smooth cutting when machining the structure between the top and bottom curved surfaces, which is beneficial for optimizing the overall cutting force distribution.

[0033] In this embodiment, the cutter head 2 is interconnected with the tool holder 1. The cutter head 2 contains a support section 21, a clearance section 22, a first machining section 23, a second machining section 24, and a third machining section 25 arranged sequentially along a direction away from the tool holder 1. The clearance section 22 is connected to the support section 21, the first machining section 23 is connected to the clearance section 22, the second machining section 24 is connected to the first machining section 23, and the third machining section 25 is connected to the second machining section 24. When viewed along a direction away from the tool holder 1, the support section 21 is tapered, the first machining section 23 is expanded, and the third machining section 25 is tapered. The clearance section 22 is located between the support section 21 and the first machining section 23, and its projection along the direction away from the tool holder 1 is on the first machining section 23. Thus, the tapered support section 21, the expanded first machining section 23, and the clearance section 22 located between the support sections 21 and 23 form a clearance space during machining to avoid unnecessary interference. Simultaneously, the expanding first machining section 23 adapts to the bottom curved surface contour of the product, and the contracting third machining section 25 adapts to the top curved surface contour, achieving progressive cutting of the top and bottom curved surfaces. The second machining section 24 provides a transition and adapts to the supporting side 33 located between the top and bottom curved surfaces, ensuring uniform cutting force distribution and simultaneous completion of the top and bottom curved surface shaping in a single pass. If the tool is initially brought close to the workpiece at a preset feed rate until the third machining section 25 makes initial contact with the top curved surface 31 of the workpiece, the tool moves in a spiral trajectory around its central axis in this contact state, continuously cutting the top curved surface until its contour reaches the target size. Then, the path command is switched, causing the tool to translate radially to the second machining section 24 to form a predetermined contact with the supporting side 33, maintaining a constant radial cutting depth for side milling of the supporting side 33. After the supporting side is machined, the tool is driven axially to the first machining section 23 to contact the bottom surface 32 to be machined. Then, a progressive cutting method is used to machine the bottom surface from bottom to top or top to bottom until the top surface 31, supporting side 33, and bottom surface 32 are simultaneously formed in a single clamping and single pass. Through the coordinated action of the first machining section 23, the second machining section 24, and the third machining section 25, the tool can continuously complete the machining of the top and bottom surfaces in a single clamping, reducing tool changes and tool setting, and minimizing machining errors and repetitive operations. This achieves the technical effect of improving machining consistency and accuracy, and increasing machining efficiency.

[0034] In one embodiment, the tool holder 1 is cylindrical, and the central axes of the support section 21, the clearance section 22, the first machining section 23, the second machining section 24, and the third machining section 25 are all coaxial with the central axis of the tool holder 1. The fact that the central axes of the support section 21, clearance section 22, first machining section 23, second machining section 24, and third machining section 25 are all coaxial with the central axis of the tool holder 1 means that the central axes of the support section 21, clearance section 22, first machining section 23, second machining section 24, and third machining section 25 are all located at the same position as the central axis of the tool holder 1, allowing the tool head 2 to rotate and operate around the same axis. Coaxiality allows the tool to move precisely along preset and mutually aligned trajectories during machining, including the support section 21, the avoidance section 22, the first machining section 23, the second machining section 24, and the third machining section 25. This enhances the overall rigidity and stability of the tool, reduces vibration, and ensures that when the tapered support section 21, the expanding first machining section 23, the tapered third machining section 25, the intermediate avoidance section 22, and the second machining section 24 work together, the relative positions and movement trajectories of the first machining section 23, the second machining section 24, and the third machining section 25 always precisely correspond to the contours of the top surface, bottom surface, and intermediate support side 33 of the product. This facilitates more accurate replication of the surface contours during a single pass, reduces cutting force fluctuations and trajectory deviations caused by different axes, improves machining accuracy and consistency, and achieves uniform distribution of cutting force.

[0035] In some embodiments, the second machining segment 24 is cylindrical, the projection of the first machining segment 23 onto the second machining segment 24 along a direction close to the second machining segment 24, and the projection of the third machining segment 25 onto the second machining segment 24 along a direction close to the second machining segment 24. The cylindrical shape of the second machining segment 24 inherently facilitates providing a stable and continuous machining transition surface. The projection positions of the first machining segment 23 and the third machining segment 25 onto the second machining segment 24, in a direction parallel to the axis, mean that the contour of the first machining segment 23 ends before reaching the second machining segment 24, and the contour of the third machining segment 25 begins to extend only after the end of the second machining segment 24. This ensures that the transition from the first machining segment 23 to the third machining segment 25 along the axial contour of the tool head 2 is smooth and without abrupt changes, avoiding sharp corners or overhangs at the ends of the two machining segments that could cause stress concentration or discontinuous cutting. Smooth contour transitions and the stability of the cylindrical section result in a more uniform distribution of cutting forces, reducing vibration and impact during machining. This not only helps protect the tool itself but also improves the surface quality of the machined parts.

[0036] In some embodiments, the outer diameter of the self-supporting section 21 of the clearance section 22 gradually increases along the direction close to the first processing section 23, such as... Figure 1 The clearance section 22 shown can be conical. Alternatively, it can have annular grooves extending continuously along its circumference. That is, multiple annular grooves can be provided on the clearance section 22 along the direction of the support section 21 near the first processing section 23, and these grooves can be interconnected to form the outer surface of the clearance section 22. Alternatively, the clearance section 22 can include multiple stepped shaft segments connected sequentially with different outer diameters. These stepped shaft segments are arranged sequentially along the direction of the support section 21 near the first processing section 23. For example, the outer diameter of each stepped shaft segment can increase sequentially along the direction of the support section 21 near the first processing section 23, or it can decrease sequentially along the direction of the support section 21 near the first processing section 23. The clearance section 22 can have an outer diameter that gradually increases from near the support section 21 to near the first processing section 23, forming a transition space between the support section 21 and the first processing section 23. When machining the bottom curved surface by moving along the tool axis, the gradually increasing outer diameter clearance section 22 can provide increased physical space at the side or above the tool, which can effectively accommodate the chips and coolant backflow that may occur during the machining process, or provide more sufficient lateral clearance for the tool itself when it is tilted at a specific angle for feeding, and more effectively avoid unnecessary collisions or interference during the machining process, so as to avoid machining interruption and realize continuous machining process.

[0037] In some embodiments, the tool holder 1 is integrally formed with the support section 21, the clearance section 22, the first machining section 23, the second machining section 24, and the third machining section 25, respectively. This integral forming makes the tool head 2 and the tool holder 1 a continuous, single metal part without separate interfaces, connectors, or welding points. This improves the overall rigidity and strength of the tool, avoids potential strength loss, fretting friction, stress concentration, and deformation risks that may exist at the joints of multiple parts, and effectively resists deformation and vibration caused by machining loads. It also improves the shape stability of the tool during the cutting process, ensuring that the tapered support section 21, the expanding first machining section 23, and the tapered third machining section 25 maintain precise geometry and relative position even under heavy cutting forces. This reduces deformation errors and vibrations during machining, improves the consistency, accuracy, and surface quality of the machined products, and also helps withstand uniformly distributed and multi-directional cutting forces.

[0038] In some embodiments, the bottom of the third machining section 25 is flat, and setting the end of the third machining section 25 as a flat surface, such as a flat-headed or flattened structure, can provide a more stable end contact area. When the third machining section 25 of the tool approaches and finally processes the vertex or critical area of ​​the top curved surface of the product, it can disperse the cutting force at the vertex, which helps to reduce cutting impact, extrusion deformation and vibration in the vertex area. It also facilitates precise finishing cutting or micro-scraping in the finishing stage, makes it easier to improve the smoothness and geometric accuracy of the critical position of the top curved surface, helps to more accurately form the ideal shape of the vertex, improves the surface quality and dimensional accuracy of the top curved surface, and improves the adaptability of the tapered third machining section 25 to the top curved surface of the product, thereby improving the final accuracy and consistency of the top curved surface machining.

[0039] In some embodiments, when the first processing section 23 contacts the bottom surface 32 of the workpiece 3, the distance between the clearance section 22 and the supporting side 33 of the workpiece 3 is greater than 0.3 mm; or when the third processing section 25 contacts the top surface 31 of the workpiece 3, the distance between the clearance section 22 and the supporting side 33 of the workpiece 3 is also greater than 0.3 mm. That is, the minimum distance between the clearance section 22 and the supporting side 33 of the workpiece in critical processing states is greater than 0.3 mm. In actual processing, the distance between the clearance section 22 and the supporting side 33 of the workpiece 3 is greater than 0.3 mm, which ensures that there is always a physical gap between the clearance section 22 and the supporting side 33 of the workpiece when processing the bottom and top surfaces. This effectively accommodates the vibration amplitude, small deformation of the tool or workpiece, chip accumulation, and coolant flow that may occur during processing, thus preventing the clearance section 22 or adjacent structures from physically contacting or interfering with the supporting side 33 of the workpiece. In addition, if the distance between the clearance section 22 and the supporting side 33 of the workpiece 3 to be processed is not greater than 0.3mm, the vibration during processing can easily cause the clearance section 22 to make instantaneous contact with the supporting side 33 of the workpiece, causing scratches on the workpiece surface. Furthermore, the cutting tool will also undergo a certain radial deformation due to the cutting force, and the thin-walled structure of the workpiece will also easily rebound elastically a certain distance. When the distance between the clearance section 22 and the supporting side 33 of the workpiece 3 to be processed is greater than 0.3mm, the above dynamic variables can be covered to avoid rigid collisions.

[0040] In some implementations, such as Figure 1As shown, the length of the second machining segment 24 is greater than the length of the first machining segment 23, and the length of the second machining segment 24 is greater than the length of the third machining segment 25. Setting the length of the second machining segment 24 to be greater than the lengths of the first machining segment 23 and the third machining segment 25 allows the second machining segment 24 to provide a longer continuous machining area in the axial direction of the tool. During machining, such as when machining the support side 33 located between the top and bottom curved surfaces, the longer second machining segment 24 provides a more stable and durable cutting contact area, increasing the contact area and contact time between the tool and the support side 33 of the workpiece. This helps to distribute the cutting force more evenly over a longer axial distance, optimizes the distribution of cutting force, effectively reduces vibration and impact during machining, improves cutting stability, facilitates better surface quality of the support side 33, and also helps to protect the tool from excessive local stress, extending tool life.

[0041] To provide a detailed description of the processing equipment provided by this utility model, the above embodiment 1 describes a cutting tool in detail. Based on the same utility model concept, this application also provides a processing equipment, as detailed in embodiment 2.

[0042] Please see Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of a workpiece 3 to be processed in a cutting tool according to an embodiment of the present invention. Embodiment two of the present invention provides a processing device, including the aforementioned cutting tool, and may further include a cutting tool spindle. The cutting tool spindle is detachably connected to the tool holder, and the cutting tool spindle is used to drive the tool holder to rotate the cutting head around the central axis of the cutting tool spindle.

[0043] Specifically, the cutting tool with the aforementioned structure of support section 21, avoidance section 22, first machining section 23, second machining section 24, and third machining section 25 is integrated into the machining equipment, enabling the equipment to perform efficient and high-precision surface machining using this dedicated cutting tool. For example, the tool spindle is coaxially assembled with the tool holder 1 through a matching interface. The memory in the CNC control system stores a preset machining program, which may include single-pass tool path data. Based on this path data, the tool is controlled to perform machining. The path data includes first controlling the tool spindle to drive the tool to feed to the third machining section 25 and contact the top surface to be machined 31, machining the top surface using a helical path based on the tool's central axis, then moving the tool to a position contacting the support side 33, machining the support side 33 with a constant radial depth of cut, and then driving the tool to a position contacting the bottom surface to be machined 32, machining the bottom surface with progressive cutting, thus completing the simultaneous forming of the top surface, support side, and bottom surface. CNC machining equipment can provide precise numerical control motion trajectory and machining parameter control, enabling the driving tool to perform a single pass according to the preset program path after one clamping. The tool continuously and sequentially uses the third machining section 25 to machine the top curved surface, the second machining section 24 to machine the middle support side 33, and the first machining section 23 to machine the bottom curved surface. It can simultaneously machine the double sides and the side in a single clamping and pass, that is, to machine the aforementioned support side 33, top curved surface, and bottom curved surface.

[0044] In some embodiments, the second embodiment of the present invention provides a processing device that further includes a workpiece 3 to be processed. The workpiece 3 to be processed includes a top surface to be processed 31, a bottom surface to be processed 32, and a supporting side 33. The supporting side 33 is connected to the top surface to be processed 31 and the bottom surface to be processed 32 respectively. The top surface to be processed 31 cooperates with the third processing section 25, the bottom surface to be processed 32 cooperates with the first processing section 23, and the supporting side 33 cooperates with the second processing section 24.

[0045] Specifically, the aforementioned equipment also includes a workpiece 3 to be processed, which has a top surface 31 to be processed, a bottom surface 32 to be processed, and a supporting side 33 connecting the two surfaces. During the processing of the equipment, the third processing section 25 of the cutting tool is pre-configured to cooperate with the top surface 31 to be processed of the workpiece 3 to perform cutting, the first processing section 23 of the cutting tool is configured to cooperate with the bottom surface 32 to be processed of the workpiece 3 to perform cutting, and the second processing section 24 of the cutting tool is configured to cooperate with the supporting side 33 of the workpiece 3 to perform cutting.

[0046] This utility model provides a processing device, in which a cutting head 2 is connected to a tool holder 1. The cutting head 2 has a support section 21, a clearance section 22, a first processing section 23, a second processing section 24, and a third processing section 25 arranged sequentially in a direction away from the tool holder 1. The clearance section 22 is connected to the support section 21, the first processing section 23 is connected to the clearance section 22, the second processing section 24 is connected to the first processing section 23, and the third processing section 25 is connected to the second processing section 24. When viewed in a direction away from the tool holder 1, the support section 21 appears to be tapered, the first processing section 23 appears to be tapered, and the third processing section 25 appears to be tapered. The clearance section 22 is located between the support section 21 and the first processing section 23, and the projection of the clearance section 22 in a direction away from the tool holder 1 is located on the first processing section 23. The tapered support section 21, the expanding first machining section 23, and the clearance section 22 located between the support sections 21 and 25 create clearance space during machining to avoid unnecessary interference. Simultaneously, the expansion of the first machining section 23 adapts to the bottom curved surface contour of the product, and the tapering of the third machining section 25 adapts to the top curved surface contour, achieving progressive cutting of the top and bottom curved surfaces. The second machining section 24 provides a transition and adapts to the support side 33 located between the top and bottom curved surfaces, ensuring uniform cutting force distribution and simultaneous shaping of the top and bottom curved surfaces in a single pass. Through the synergistic effect of the first machining section 23, the second machining section 24, and the third machining section 25, the tool can continuously complete the machining of the top and bottom curved surfaces in a single setup, reducing tool changes and tool setting, and minimizing machining errors and repetitive operations. This achieves the technical effect of improving machining consistency and accuracy, and increasing machining efficiency.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cutting tool, characterized in that, The cutting tool includes a shank and a cutting head connected to the shank. The cutting head includes a support section, a clearance section connected to the support section, a first machining section connected to the clearance section, a second machining section connected to the first machining section, and a third machining section connected to the second machining section, arranged sequentially along a direction away from the shank. When viewed along a direction away from the shank, the support section is tapered, the first machining section is expanded, the third machining section is tapered, the clearance section is located between the support section and the first machining section, and the projection of the clearance section along a direction away from the shank onto the first machining section is located on the first machining section.

2. The cutting tool according to claim 1, characterized in that, The tool holder is cylindrical, and the central axis of the support section, the central axis of the clearance section, the central axis of the first processing section, the central axis of the second processing section, and the central axis of the third processing section are all coaxial with the central axis of the tool holder.

3. The cutting tool according to claim 2, characterized in that, The second processing segment is cylindrical, the projection of the first processing segment onto the second processing segment along the direction close to the second processing segment is located on the second processing segment, and the projection of the third processing segment onto the second processing segment along the direction close to the second processing segment is located on the second processing segment.

4. The cutting tool according to claim 1, characterized in that, The outer diameter of the clearance section gradually increases from the support section in the direction close to the first processing section, or the clearance section is provided with an annular groove that extends continuously in the circumferential direction of the clearance section, or the clearance section includes multiple stepped shaft sections connected in sequence and having different outer diameters.

5. The cutting tool according to claim 1, characterized in that, The tool holder is integrally formed with the support section, the clearance section, the first processing section, the second processing section, and the third processing section.

6. The cutting tool according to claim 1, characterized in that, The bottom of the third processing section is flat.

7. The cutting tool according to claim 1, characterized in that, When the first processing section contacts the bottom surface of the workpiece to be processed, or when the third processing section contacts the top surface of the workpiece to be processed, the distance between the clearance section and the supporting side of the workpiece to be processed is greater than 0.3 mm.

8. The cutting tool according to claim 1, characterized in that, The length of the second processing segment is greater than the length of the first processing segment, and the length of the second processing segment is greater than the length of the third processing segment.

9. A processing equipment, characterized in that, The processing equipment includes the cutting tool as described in any one of claims 1 to 8.

10. The processing equipment according to claim 9, characterized in that, The processing equipment further includes a workpiece having a top surface to be processed, a bottom surface to be processed, and supporting side surfaces connecting the top surface to be processed and the bottom surface to be processed respectively. The top surface to be processed cooperates with the third processing section, the bottom surface to be processed cooperates with the first processing section, and the supporting side surfaces cooperate with the second processing section.

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