End face flattening and chamfering forming cutter

Abstract

The utility model provides an end face flattening and chamfering forming cutter which comprises a cutter handle, a connector is installed at one end of the cutter handle, a milling cutter is arranged at one end of the connector in an embedded mode, and a positioning set is arranged in the connector. According to the end face flattening and chamfering forming cutter, structures such as the connector and the positioning set are arranged, all parts in the connector cooperate with one another, a limiting plate guarantees axial stability, a backing ring buffers and absorbs shock to achieve stable connection, a limiting cylinder provides a containing space, and a conical pipe and a protective sleeve protect and guide machining; by means of the ingenious design of a threaded cylinder, a screw, a connecting plate and a plurality of positioning plates, the positioning set accurately clamps and positions the milling cutter through thread transmission, effectively limits radial shaking deviation, improves installation precision, guarantees machining precision and quality, and is good in universality, capable of being matched with various milling cutters and high in practicability. Tediousness of tool replacement and adjustment is reduced, efficiency is improved, cost is reduced, and the device is more flexible and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of cutting and machining tools, and more specifically, to a face-flattening and chamfering forming tool. Background Technology

[0002] Chamfering is suitable for chamfering molds and mold frames, machine tool beds, steel processing, metal sheet chamfering, and machine equipment chamfering. It is widely used in industries such as steel, steel structure, molds, metal processing, and hardware parts manufacturing.

[0003] There are many types of milling cutters. A typical milling cutter is a one-piece cutter, where the cutter head and the cutter shank are machined as a single piece. This requires very rough material for machining, resulting in high production costs. Moreover, if the cutter head is damaged during use, it cannot be replaced; only the cutter shank can be replaced, making the operating costs very high. The high manufacturing cost further deters many companies. After machining grooves with ordinary milling cutters, chamfering is required using chamfering tools. These two processes are complicated, lengthy, time-consuming, and labor-intensive. Furthermore, the burrs on both sides of the groove after chamfering require an additional process for smoothing, further increasing the company's operating costs.

[0004] This invention makes it easier and more flexible to change cutting tools. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background art and provide a face flattening and chamfering forming knife.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a face flattening and chamfering forming tool, comprising: a tool holder, a connector is installed at one end of the tool holder, and a milling cutter is embedded at one end of the connector, and a positioning group is provided inside the connector;

[0007] The connector includes a limiting plate, a washer, a limiting cylinder, and a protective sleeve. One end of the limiting plate is fixedly installed on one end of the tool holder. The washer is located between the limiting plate and the limiting cylinder. The protective sleeve is nested on the lower outer surface of the limiting cylinder.

[0008] The positioning assembly includes a threaded cylinder, a screw, a connecting plate, and multiple positioning plates. The screw can be embedded inside the threaded cylinder. The connecting plate is fixedly installed at one end of the screw. One end of the positioning plate can be embedded inside the connecting plate. The connecting plate and the positioning plate are movably connected.

[0009] A further preferred embodiment: the threaded cylinder has internal threads, the screw and the threaded cylinder are connected by threads, and a positioning ring is nested on the outer surface of the threaded cylinder. The positioning ring is located above the washer ring and is fixed to the outer surface of the threaded cylinder.

[0010] A further preferred embodiment: the bottom of the gasket is threaded into the inside of the limiting cylinder, the bottom of the limiting cylinder is connected to a tapered tube, and the protective sleeve is nested on the outer surface of the tapered tube.

[0011] A further preferred embodiment: the outer surface of the tapered tube is provided with multiple slots, each of the positioning plates is embedded in the corresponding slot, and the number of slots and positioning plates are corresponding.

[0012] A further preferred embodiment: the outer surface of the connecting plate is provided with multiple sliding grooves, the upper end of the positioning plate is provided with a slider, the slider can be embedded in the sliding groove, and the slider and the sliding groove are slidably connected.

[0013] A further preferred embodiment: the inside of the slide groove is T-shaped, the slider fits into the slide groove, and the positioning plate is cone-shaped.

[0014] A further preferred embodiment: the outer side of the positioning plate contacts the inner wall of the protective sleeve, and the lower part of the protective sleeve is conical in shape, and the outer surface of the milling cutter contacts the inner side of the positioning plate.

[0015] Beneficial effects:

[0016] 1. By incorporating a connector, the internal components of the connector work together to provide a stable and multifunctional structural foundation for the cutting tool. The limiting plate effectively prevents the milling cutter from moving excessively in the axial direction, avoiding damage to machining accuracy due to axial movement and ensuring axial stability during machining. The washer ring plays a buffering and stabilizing role between the limiting plate and the limiting cylinder, absorbing some of the impact force generated during machining, making the connection inside the connector tighter and more stable, reducing the risk of wear and loosening between components. The limiting cylinder provides precise housing space for the milling cutter. The tapered tube connected to its bottom and the nested protective sleeve not only protect the bottom of the milling cutter during machining, preventing damage from accidental collisions, but also assist in guiding the machining direction, making the milling cutter more accurate when performing end face flattening and chamfering, improving machining quality and efficiency, and enhancing the reliability and durability of the tool system in complex machining environments.

[0017] 2. The positioning assembly is crucial for ensuring high-precision installation and stable operation of the milling cutter. Its unique combination design of threaded cylinder, screw, connecting plate, and multiple positioning plates achieves precise clamping and positioning of the milling cutter through threaded transmission. Multiple positioning plates act on the milling cutter from the side simultaneously, effectively limiting the radial wobble and offset of the milling cutter, greatly improving the positional accuracy of the milling cutter after installation. This ensures higher machining accuracy during end face flattening and chamfering, significantly reducing the surface roughness of the workpiece, resulting in a smoother end face and more uniform chamfer dimensions. Furthermore, this positioning method has good versatility, adapting to milling cutters of different diameters within a certain range. Simply adjusting the threaded cylinder can achieve effective positioning of various milling cutters, reducing the tedious operation of readjusting or replacing the positioning device when changing tools, improving tool utilization efficiency, and reducing tool usage costs and equipment maintenance costs for enterprises.

[0018] 3. In summary, this type of end-face flattening and chamfering forming cutter, through the inclusion of a connector and a positioning assembly, features coordinated internal components within the connector. A limiting plate ensures axial stability, a washer ring provides cushioning and shock absorption for a secure connection, a limiting cylinder offers accommodating space, and a tapered tube and protective sleeve protect and guide the machining process. This enhances the reliability and durability of the tool system in complex environments. The positioning assembly, with its ingenious design of a threaded cylinder, screw, connecting plate, and multiple positioning plates, precisely clamps and positions the milling cutter via threaded transmission, effectively limiting radial wobble and offset, improving installation accuracy, and ensuring machining accuracy and quality. Furthermore, it boasts excellent versatility, adapting to various milling cutters, reducing the hassle of tool replacement and adjustment, improving efficiency, and lowering costs, making the device more flexible and convenient to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the connection structure between the tapered tube and the protective sleeve of this utility model.

[0021] Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the disassembled positioning group structure of this utility model.

[0023] Figure 1-4 In the middle: 1. Tool holder; 2. Connector; 201. Limiting plate; 202. Washer ring; 203. Limiting cylinder; 204. Protective sleeve; 205. Tapered tube; 206. Slot; 3. Positioning assembly; 301. Threaded cylinder; 302. Screw; 303. Connecting plate; 304. Positioning plate; 305. Positioning ring; 306. Slider; 307. Slide groove; 4. Milling cutter. Detailed Implementation

[0024] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0025] Please see Figure 1-4 In this embodiment of the present invention, a face-flattening chamfering forming cutter includes: a cutter shank 1, a connector 2 mounted on one end of the cutter shank 1, and a milling cutter 4 embedded in one end of the connector 2; a positioning assembly 3 is provided inside the connector 2; the connector 2 includes a limiting plate 201, a washer 202, a limiting cylinder 203, and a protective sleeve 204; one end of the limiting plate 201 is fixedly mounted on one end of the cutter shank 1; the washer 202 is located between the limiting plate 201 and the limiting cylinder 203; and the protective sleeve 204 is nested on the lower outer surface of the limiting cylinder 203; the positioning assembly 3 includes a threaded cylinder 301, a screw 302, a connecting plate 303, and multiple positioning plates 304; the screw 302 can be embedded in the threaded cylinder. Inside 301, a connecting plate 303 is fixedly installed at one end of a screw 302, and one end of a positioning plate 304 can be embedded inside the connecting plate 303. The connecting plate 303 and the positioning plate 304 are movably connected. The threaded cylinder 301 has threads inside, and the screw 302 and the threaded cylinder 301 are threadedly connected. A positioning ring 305 is nested on the outer surface of the threaded cylinder 301. The positioning ring 305 is located above the washer ring 202 and is fixed to the outer surface of the threaded cylinder 301. The bottom of the washer ring 202 is threadedly embedded inside the limiting cylinder 203. A tapered tube 205 is connected to the bottom of the limiting cylinder 203, and a protective sleeve 204 is nested on the outer surface of the tapered tube 205.

[0026] First, when installing the milling cutter 4, the milling cutter 4 is embedded in the limiting sleeve 203 of the connector 2. By rotating the threaded sleeve 301, since the screw 302 is threadedly connected to the threaded sleeve 301, the screw 302 will move up and down with the rotation of the threaded sleeve 301. When the screw 302 moves downward, the connecting plate 303 fixed at one end will also move downward. One end of the positioning plate 304 is embedded inside the connecting plate 303 and is movably connected. When the connecting plate 303 descends, the positioning plate 304 will expand outward under the push of the connecting plate 303. These positioning plates 304 will contact the side of the milling cutter 4, thereby firmly positioning the milling cutter 4 in the limiting sleeve 203, ensuring the stability of the milling cutter 4 during operation. At the same time, the positioning ring 305 is located on the washer ring 202. The end is fixed to the outer surface of the threaded cylinder 301, and the bottom of the washer 202 is threaded into the inside of the limiting cylinder 203. This structure can further ensure the positional stability of the threaded cylinder 301 and prevent it from shifting during operation, thereby ensuring the positioning effect of the positioning group 3 on the milling cutter 4. When using this forming cutter to perform end face flattening and chamfering, the tool holder 1 drives the connecting head 2 and the milling cutter 4 to rotate. The limiting plate 201 in the connecting head 2 can prevent the milling cutter 4 from moving excessively in the axial direction, playing a preliminary limiting role. The tapered tube 205 connected to the bottom of the limiting cylinder 203 and the protective sleeve 204 nested on its outer surface can provide a certain degree of protection for the bottom of the milling cutter 4 during processing, and also help guide the processing direction, so that the milling cutter 4 can flatten the end face of the workpiece. For more precise chamfering, the washer 202 acts as a buffer and stabilizer between the limiting plate 201 and the limiting cylinder 203, ensuring a tight and stable connection between the internal components of the connector 2. This allows the entire tool system to maintain good working condition during high-speed rotation and machining. The positioning group 3 is designed to accurately position the milling cutter 4. Multiple positioning plates 304 clamp the milling cutter 4 from the side, ensuring that the milling cutter 4 will not wobble or shift during operation. This allows for higher machining accuracy during end face flattening and chamfering, effectively reducing the surface roughness of the workpiece, resulting in a smoother end face and more precise and uniform chamfer dimensions. The internal structure of the connector 2 includes the limiting plate 201, washer 202, and limiting cylinder 203. The coordinated operation of these components enhances the overall stability of the cutting tool. The limiting plate 201 prevents axial movement of the milling cutter 4, the washer ring 202 provides buffering and stabilizing effects, and the limiting cylinder 203 provides space for the milling cutter 4 and further protects the bottom of the milling cutter 4 through the tapered tube 205 and protective sleeve 204. This stable structure allows the tool to operate smoothly during high-speed rotation, reducing vibration and noise, and extending the tool's service life. The tool's installation method is relatively simple; the positioning plate 304 is adjusted by rotating the threaded cylinder 301 to position the milling cutter 4. The operation is convenient and quick, and this positioning method can accommodate milling cutters 4 of different diameters. As long as the size of the milling cutter 4 is within the adjustment range of the positioning plate 304, effective positioning can be achieved.This improves the versatility of cutting tools and reduces their operating costs.

[0027] In this embodiment of the present invention, a plurality of slots 206 are provided through the outer surface of the tapered tube 205, and each positioning plate 304 is embedded in the corresponding slot 206, and the number of slots 206 and positioning plates 304 are corresponding; a plurality of sliding grooves 307 are provided on the outer surface of the connecting plate 303, and a slider 306 is provided at the upper end of the positioning plate 304. The slider 306 can be embedded in the sliding groove 307, and the slider 306 and the sliding groove 307 are slidably connected; the inside of the sliding groove 307 is "T" shaped, and the slider 306 and the sliding groove 307 fit together; the positioning plate 304 is tapered; the outer side of the positioning plate 304 contacts the inner wall of the protective sleeve 204, and the lower part of the protective sleeve 204 is tapered; the outer surface of the milling cutter 4 contacts the inner side of the positioning plate 304;

[0028] When preparing to install the milling cutter 4, first insert the milling cutter 4 into the limiting sleeve 203 to place it in the positioning state. Then, rotate the threaded sleeve 301. Since the screw 302 and the threaded sleeve 301 are threadedly connected, as the threaded sleeve 301 rotates, the screw 302 will move up and down along the axial direction of the threaded sleeve 301. One end of the screw 302 is fixedly connected to the connecting plate 303. When the screw 302 moves downward, it will drive the connecting plate 303 to move downward synchronously. The outer surface of the connecting plate 303 has multiple "T"-shaped sliding grooves 307. The slider 306 set at the upper end of the positioning plate 304 is engaged with the sliding grooves 307 and is slidably connected. Therefore, when the connecting plate 303 moves downward, the positioning plate 304 will slide along the sliding grooves 307. The 4th section is conical in shape, with its outer side contacting the inner wall of the protective sleeve 204, which is also conical in shape at the bottom, and its inner side contacting the outer surface of the end mill 4. Simultaneously, slots 206 corresponding to the number of positioning plates 304 are provided through the outer surface of the conical tube 205. Each positioning plate 304 is embedded in its corresponding slot 206. As the positioning plate 304 slides inward, it expands outward along the slot 206. Furthermore, guided by the conical inner wall of the protective sleeve 204, the positioning plate 304 fits more tightly and precisely against the outer surface of the end mill 4, providing stable positioning of the end mill 4 from multiple directions. This ensures the end mill 4 is firmly fixed within the connector 2, preventing displacement or shaking during subsequent machining. This is crucial for end face flattening operations. During corner machining, the tool holder 1 drives the connector 2 and the installed milling cutter 4 to rotate at high speed. During rotation, the positioning plate 304 firmly fixes the milling cutter 4, allowing it to maintain a stable rotational posture. The limiting plate 201 continues to restrict the axial movement of the milling cutter 4. The protective sleeve 204 and the tapered tube 205, besides their role in positioning, also provide some protection to the bottom and surrounding area of ​​the milling cutter 4 during machining. For example, they prevent machining debris and other foreign objects from entering the connector 2 and affecting the tool's operation. They also assist in guiding the machining direction, ensuring that the machining operation accurately flattens and chamfers the workpiece end face as expected. The positioning plate 304 slides through the slider 306 and the "T"-shaped groove 307. The connection enables directional movement, and combined with the slot 206 and its fit with the protective sleeve 204 and the milling cutter 4, it achieves precise multi-directional and multi-angle positioning of the milling cutter 4. Compared with conventional single positioning methods, it can more effectively restrict the degree of freedom of the milling cutter 4 in various directions, making the installation position of the milling cutter 4 more accurate, greatly improving the positioning accuracy during machining. This helps to machine end faces and chamfers with higher dimensional accuracy and better surface quality on the workpiece. The cooperation between the "T"-shaped slide 307 and the slider 306 not only guides the positioning plate 304 to move accurately, but also effectively prevents the positioning plate 304 from unexpected displacement or loosening during machining, ensuring the continuity and stability of the positioning effect, and further ensuring the stability of machining accuracy.Structural synergy ensures stability: The close and ingenious cooperation between the positioning plate 304, the tapered tube 205, the protective sleeve 204, and other components, along with the axial restriction provided by the upper limit plate 201, strengthens the overall structural integrity of the tool during high-speed rotation. The cooperation of each component reduces vibration and wobbling caused by instability in the tool's own structure, allowing for smooth machining operations, lowering the risk of tool damage during processing, and extending tool life. The protective sleeve 204 and the tapered tube 205 effectively prevent chips, dust, and other foreign objects generated during processing from entering the tool. The foreign objects are inserted into the connector 2 to prevent them from affecting the fit between the positioning plate 304 and the milling cutter 4, as well as other components. This maintains a stable and reliable working state for the cutting tool and ensures smooth machining. This method of positioning the milling cutter 4 by sliding the positioning plate 304 ensures effective positioning and installation as long as the size of the milling cutter 4 is within the adjustable range of the positioning plate 304. Therefore, it can accommodate various milling cutters 4 of different diameters, improving the adaptability of the tooling device to different machining needs and milling cutter 4 specifications, enhancing its versatility, and reducing the cost for enterprises that would otherwise need to stock multiple specialized cutting tools due to tool compatibility issues.

[0029] Working principle: When installing the milling cutter 4, first insert the milling cutter 4 into the limiting cylinder 203 of the connector 2, rotate the threaded cylinder 301. Because the screw 302 is threadedly connected to the threaded cylinder 301, the screw 302 moves axially, which drives the connecting plate 303 to move downward. Since the connecting plate 303 has a "T"-shaped groove 307 that fits with the upper slider 306 of the positioning plate 304, the positioning plate 304 slides inward along the groove 307 while moving downward. At the same time, the positioning plate 304 is embedded in the slot 206 outside the tapered tube 205 and its outer side is connected to the protective sleeve 204. The tapered inner wall contacts the outer surface of the milling cutter 4. Guided by the protective sleeve 204 and restricted by the slot 206, the positioning plate 304 moves inward and fits tightly against the milling cutter 4, firmly fixing the milling cutter 4 in the limiting cylinder 203 from multiple directions. The positioning ring 305 and the washer ring 202 work together to ensure the stability of the threaded cylinder 301 and ensure positioning accuracy. When performing end face flattening and chamfering, the tool holder 1 drives the connecting head 2 and the milling cutter 4 to rotate at high speed. The limiting plate 201 in the connecting head 2 restricts the axial movement of the milling cutter 4, making the milling cutter 4 axially stable, while the tapered tube... 205 and the protective sleeve 204 protect the bottom and periphery of the milling cutter 4 during machining, preventing foreign objects such as chips from entering the connector 2 and interfering with the cutter's operation. They also assist in guiding the machining direction, ensuring that the milling cutter 4 accurately flattens and chamfers the workpiece end face. The precise cooperation between the positioning plate 304 and other components greatly restricts the degrees of freedom of the milling cutter 4 in all directions, making its installation position extremely accurate. Compared with the traditional single positioning method, this is a significant advantage. The combination of the "T"-shaped groove 307 and the slider 306 not only precisely guides the movement of the positioning plate 304, but also... During machining, the positioning plate 304 is kept stable to prevent displacement or loosening, thus ensuring machining accuracy. In the entire tool structure, components such as the limiting plate 201, the washer ring 202, the limiting cylinder 203, and the positioning group 3 cooperate with each other to form a stable whole, reducing vibration and runout when the tool rotates at high speed, allowing the tool to run smoothly, reducing the risk of damage, and extending its service life. Moreover, this positioning method can adapt to various diameter milling cutters 4. As long as the size of the milling cutter 4 is within the adjustment range of the positioning plate 304, it can be effectively positioned, which greatly improves the versatility of the tool and reduces the tool cost for enterprises.

Claims

1. A face-flattening and chamfering forming tool, comprising: The tool holder (1) is characterized in that: a connector (2) is installed at one end of the tool holder (1), and a milling cutter (4) is embedded at one end of the connector (2), and a positioning group (3) is provided inside the connector (2); The connector (2) includes a limiting plate (201), a washer (202), a limiting cylinder (203), and a protective sleeve (204). One end of the limiting plate (201) is fixedly installed on one end of the knife handle (1). The washer (202) is located between the limiting plate (201) and the limiting cylinder (203). The protective sleeve (204) is nested on the lower outer surface of the limiting cylinder (203). The positioning assembly (3) includes a threaded cylinder (301), a screw (302), a connecting plate (303), and multiple positioning plates (304). The screw (302) can be embedded inside the threaded cylinder (301). The connecting plate (303) is fixedly installed at one end of the screw (302). One end of the positioning plate (304) can be embedded inside the connecting plate (303). The connecting plate (303) and the positioning plate (304) are movably connected.

2. The end face flattening and chamfering forming knife according to claim 1, characterized in that: The threaded cylinder (301) has internal threads, and the screw (302) and the threaded cylinder (301) are connected by threads. A positioning ring (305) is nested on the outer surface of the threaded cylinder (301). The positioning ring (305) is located at the upper end of the washer (202) and is fixed on the outer surface of the threaded cylinder (301).

3. The end face flattening and chamfering forming knife according to claim 1, characterized in that: The bottom of the gasket (202) is threaded into the inside of the limiting cylinder (203), the bottom of the limiting cylinder (203) is connected to a tapered tube (205), and the protective sleeve (204) is nested on the outer surface of the tapered tube (205).

4. The end face flattening and chamfering forming knife according to claim 3, characterized in that: The outer surface of the tapered tube (205) is provided with multiple slots (206), and each positioning plate (304) is embedded in the corresponding slot (206), and the number of slots (206) and positioning plates (304) are corresponding.

5. The end face flattening and chamfering forming knife according to claim 4, characterized in that: The outer surface of the connecting plate (303) is provided with a plurality of sliding grooves (307), and the upper end of the positioning plate (304) is provided with a slider (306). The slider (306) can be embedded in the sliding groove (307), and the slider (306) and the sliding groove (307) are slidably connected.

6. The end face flattening and chamfering forming knife according to claim 5, characterized in that: The inside of the groove (307) is T-shaped, the slider (306) fits into the groove (307), and the positioning plate (304) is conical.

7. The end face flattening and chamfering forming knife according to claim 1, characterized in that: The outer side of the positioning plate (304) contacts the inner wall of the protective sleeve (204), and the lower part of the protective sleeve (204) is conical. The outer surface of the milling cutter (4) contacts the inner side of the positioning plate (304).

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