A sleeve cutting knife facilitating blanking

Abstract

The utility model relates to a sleeve material cutter convenient to unload for setting on machine main shaft to carry out sleeve material cutting. The sleeve material cutter includes cutter cylinder and the cutter head coaxially arranged with cutter cylinder. The inside of cutter cylinder is set as the sleeve material groove of cylindrical shape. The cutter head is arc shape and sets up the outer edge of one side of sleeve material groove of cutter cylinder. A plurality of cutter heads are symmetrically arranged along the circumferential center of cutter cylinder and form the chip removal groove with cutter cylinder between adjacent two cutter heads. The staggered step formed by staggered arrangement of the cutter head in the radial direction of cutter cylinder can disperse the impact force during cutting, avoid damage of the cutter head due to excessive pressure on a single part, and enhance the structural stability of the cutter head. The sand blade layer covers the cutter head and covers the staggered step, which can improve the cutting capacity of the cutter head, further prolong the service life of the sleeve material cutter, and ensure the roughness of the cutting surface during cutting of the raw material, improving the quality of raw material cutting.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, and in particular to a nesting tool that facilitates material unloading. Background Technology

[0002] In the field of machining, nesting tools are widely used as a key processing tool in cutting various materials, especially in scenarios requiring high-precision and high-efficiency nesting cutting, where their importance is increasingly highlighted. However, traditional nesting tools have revealed many problems that urgently need to be solved in practical use, which has provided an opportunity for the development of new nesting tools.

[0003] From a cutting efficiency perspective, the traditional nesting cutter head design is not conducive to effective contact with the material being cut. The small contact area increases cutting resistance, consuming more energy and severely impacting cutting speed. Furthermore, waste accumulation is a significant problem during cutting; the inability to promptly remove waste from the cutting area further hinders the cutting process and reduces overall processing efficiency. Taking the nesting cutting of metal pipes as an example, waste accumulation can cause the cutter head to jam, necessitating frequent machine shutdowns for cleaning, severely affecting production continuity.

[0004] The durability of the cutting tool body is also a major weakness of traditional nesting tools. During cutting, the cutting head often experiences uneven stress, and excessive local stress can easily lead to deformation or even damage to the cutting tool body. This not only shortens the service life of the nesting tool and increases the frequency of tool replacement, but also affects production efficiency due to frequent downtime for tool replacement. In addition, traditional nesting tools have defects in chip removal design. The chips generated during cutting cannot be discharged in time and tend to accumulate in the cutting area. On the one hand, this can block the cutting path and affect the cutting quality; on the other hand, it can accelerate the wear of the cutting head and the cutting barrel, further reducing the durability of the cutting tool body.

[0005] To overcome the shortcomings of traditional nesting tools in terms of precision, efficiency, and durability, this utility model proposes a newly designed nesting tool that is easy to use for blanking. It aims to comprehensively improve the performance of the nesting tool by optimizing key structures such as the tool barrel, tool head, chip removal groove, and abrasive layer, so as to meet the urgent needs of the modern machining industry for high-precision, high-efficiency, and high-stability machining.

[0006] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that this utility model does not have the features of these prior art. On the contrary, this utility model has all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a convenient nesting cutter for mounting on a machine spindle for nesting cutting. The nesting cutter includes a cutter barrel and cutter heads coaxially arranged with the barrel. The interior of the barrel is configured with a cylindrical nesting groove. The cutter head is arc-shaped and positioned on the outer edge of one side of the nesting groove of the barrel. Several cutter heads are rotationally symmetrically arranged around the circumferential center of the barrel, with adjacent cutter heads forming chip removal grooves with the barrel. The cutter heads are radially offset from the barrel to form a staggered step between the cutter head and the barrel. A sanding layer covering the cutter head and the staggered step is provided on the outer surface of the cutter head.

[0008] According to a preferred embodiment, the abrasive layer is formed by spraying diamond abrasive onto a staggered stepped structure between the cutting head and the cutting barrel.

[0009] According to a preferred embodiment, the thickness of the abrasive blade layer is between 0.3 mm and 0.4 mm.

[0010] According to a preferred embodiment, the two radially side surfaces of the cutter head form a staggered step with the cutter barrel, with a radial range of 0.15 mm to 0.2 mm.

[0011] According to a preferred embodiment, one of the at least two adjacent cutting heads forming the chip removal groove is provided with an inclination towards the outer end face of the chip removal groove to form a chip removal groove that gradually decreases in size from the outside to the inside.

[0012] According to a preferred embodiment, the radially opposite sides of the cutter barrel forming the chip removal groove are offset. The two sides of the cutter barrel forming the chip removal groove are arranged in an inclined manner from the inside out towards the outside.

[0013] According to a preferred embodiment, there are four arc-shaped cutter heads, which are evenly arranged along the circumference of the cutter barrel to form four corresponding chip removal grooves.

[0014] According to a preferred embodiment, a plurality of symmetrical fixing holes are provided axially on the outer peripheral surface of the cutter barrel. The symmetrically arranged fixing holes are formed by penetrating the cutter barrel radially from the outer side of the cutter barrel.

[0015] According to a preferred embodiment, the tool further includes a tool holder fixedly connected to the tool barrel. The tool holder is located on the side of the tool barrel away from the tool tip, and the radius of the tool holder is larger than the radius of the tool barrel.

[0016] According to a preferred embodiment, the tool holder has a threaded hole on its axis for connection with the spindle. Attached Figure Description

[0017] Figure 1 This is a simplified side view of a preferred embodiment of the present invention, showing a nesting cutter with four cutting heads for easy material feeding.

[0018] Figure 2 This is a simplified structural diagram of a preferred embodiment of the present invention, showing a material-feeding nesting knife with two cutting heads and its corresponding structure after being cut.

[0019] List of reference numerals

[0020] 100: Tool holder; 101: Material groove; 102: Fixing hole; 200: Tool head; 201: Chip removal groove; 202: Offset step; 203: Abrasive layer; 300: Tool holder; 301: Threaded hole. Detailed Implementation

[0021] The following is a detailed explanation with reference to the accompanying drawings.

[0022] Example 1

[0023] This utility model provides a convenient material-feeding nesting cutter, which is mounted on the machine spindle for nesting and cutting. For example... Figure 2 As shown, the cutting tool includes a tool barrel 100 and a cutting head 200 coaxially arranged with the tool barrel 100. The inside of the tool barrel 100 is configured as a cylindrical cutting groove 101. The cutting head 200 is arc-shaped and is disposed on the outer edge of one side of the cutting groove 101 of the tool barrel 100. Several cutting heads 200 are arranged rotationally symmetrically around the circumferential center of the tool barrel 100, and a chip removal groove 201 is formed between adjacent cutting heads 200 and the tool barrel 100. The cutting heads 200 are radially offset from the tool barrel 100 to form a misaligned step 202 located between the cutting head 200 and the tool barrel 100. A cutting edge layer 203 is provided on the outer surface of the cutting head 200, covering the cutting head 202 and the misaligned step 202. Figure 2This diagram shows a partial cross-section of the cutter head 200 and the cutter cylinder 100 after two cutter heads 200 are arranged circumferentially on the cutter cylinder 100. It reveals the specific structure of the staggered step 202 and the abrasive layer 203, as well as the inclined arrangement of the chip removal groove. The cutter cylinder 100 and the cutter head 200 are coaxially arranged to ensure the stability of the center during high-speed rotation of the cutting tool, reducing cutting deviations caused by eccentricity and improving the accuracy of the cutting. The cylindrical cutting groove 101 provides space for cutting, enabling smooth material feeding. The arc-shaped cutter head 200 is located on the outer edge of one side of the cutting groove 101 in the cutter cylinder 100, achieving contact between the cutter head 200 and the material to be cut. The arc-shaped structure adapts to the rotational cutting trajectory, reducing cutting resistance, minimizing material loss, and improving cutting efficiency. Several cutting heads 200 are symmetrically arranged around the circumference of the cutting cylinder 100 towards the center, ensuring uniform force distribution on the cutting cylinder 100 during cutting. This prevents excessive localized force that could deform the cutting head and extends the service life of the cutting tool. The chip removal groove 201 formed by adjacent cutting heads 200 and the cutting cylinder 100 can promptly discharge cutting debris, preventing it from clogging the cutting area and affecting cutting quality. It also reduces wear on the cutting heads 200 and the cutting cylinder 100 caused by debris. The staggered steps 202 formed by the radially offset arrangement of the cutting heads 200 in the cutting cylinder 100 can disperse the impact force during cutting, preventing damage to any single part of the cutting head 200 due to excessive pressure, and enhancing the structural stability of the cutting head 200. The abrasive layer 203 covers the cutting head 202 and the staggered steps 202. The abrasive layer has high hardness, which can improve the cutting ability of the cutting head 200 and further extend the service life of the cutting tool. The abrasive layer 203 can also ensure the roughness of the cut surface when cutting the raw material, improving the quality of the raw material cutting.

[0024] According to a preferred embodiment, the abrasive layer 203 is formed by spraying diamond abrasive onto the staggered steps 202 between the cutter head 200 and the cutter barrel 100. Diamond abrasive has extremely high hardness; spraying it onto the staggered steps 202 between the cutter head 200 and the cutter barrel 100 to form the abrasive layer 203 significantly improves the wear resistance and cutting sharpness of the cutting tool. During the cutting process, it can easily handle various materials with high hardness, reducing the wear rate of the abrasive layer 203 and extending its service life. Simultaneously, the uniform structure of the abrasive layer 203 formed by diamond spraying ensures stable force during cutting, avoids cutting deviations caused by unevenness in the abrasive layer 203, and guarantees the roughness of the cut surface.

[0025] According to a preferred embodiment, the thickness of the abrasive layer 203 is between 0.3 mm and 0.4 mm. Controlling the thickness of the abrasive layer 203 to between 0.3 mm and 0.4 mm ensures that the abrasive layer 203 possesses sufficient hardness and wear resistance to meet the strength requirements of nested cutting, preventing rapid wear and failure due to excessive thickness. It also prevents excessive thickness from increasing the overall weight of the cutting head 200, avoiding excessive centrifugal force during high-speed rotation that could cause blade vibration and affect cutting accuracy. Furthermore, it reduces the consumption of diamond abrasive material, lowering production costs.

[0026] According to a preferred embodiment, the two radially side surfaces of the cutter head 200 form a staggered step 202 with a radial range between 0.15 mm and 0.2 mm with the cutter barrel 100. This staggered step 202, with a radial range of 0.15 mm to 0.2 mm, effectively disperses the cutting impact force while preventing stress concentration at the connection between the cutter head 200 and the cutter barrel 100 due to an excessively large radial range of the staggered step 202, thus preventing cracking of the cutter body. It also prevents the staggered step 202 from being too small, which would fail to fully disperse the impact force, ensuring that the cutter head 200 maintains a stable structure during cutting, improving the overall durability of the cutting tool, and guaranteeing continuous and stable cutting operations.

[0027] According to a preferred embodiment, one of at least two adjacent cutter heads 200 forming the chip removal groove 201 has an inclined surface facing the outer end face of the chip removal groove 201 to form a chip removal groove 201 that gradually decreases in size from the outside to the inside. For example... Figure 1 As shown, among the at least two adjacent cutter heads 200 forming the chip removal groove 201, one has an inclined surface facing the outer end face of the chip removal groove 201, so that the chip removal groove 201 gradually narrows from the outside to the inside. This structure can form a guiding effect, allowing the chips generated during cutting to flow quickly inward along the inclined direction within the chip removal groove 201, avoiding the accumulation and blockage of chips at the outer end of the chip removal groove 201. At the same time, the gradually narrowing chip removal groove 201 can exert a certain squeezing effect on the chips, making it easier for the chips to be discharged from the outside of the cutter body, further improving the chip removal efficiency, reducing the friction and wear of chips on the cutter head 200 and the cutter barrel 100, and ensuring that the cutting speed and cutting quality are not affected by chip removal problems.

[0028] According to a preferred embodiment, the radially opposite sides of the tool barrel 100 forming the chip removal groove 201 are offset. The two sides of the tool barrel 100 forming the chip removal groove 201 are arranged inclined from the inside out towards the outside. Figure 2As shown, the two sides of the chip removal groove 201 formed by the cutter barrel 100 are inclined from the inside to the outside, providing a smoother channel for chip discharge. Under the action of its own gravity and the centrifugal force generated by the rotation of the cutter body, the chips can be quickly discharged outward along the inclined sides, further optimizing the chip removal effect, preventing chips from accumulating in the chip removal groove 201, reducing the wear of chips on the inner wall of the cutter barrel 100, extending the service life of the cutter barrel 100, and ensuring the cleanliness of the cutting area and improving the cutting accuracy.

[0029] According to a preferred embodiment, four arc-shaped cutter heads 200 are evenly arranged along the circumference of the cutter barrel 100 to form four corresponding chip removal grooves 201. For example... Figure 2 As shown, the arc-shaped cutter head 200 can preferably be configured as two. For example... Figure 1 As shown, four arc-shaped cutter heads 200 are evenly arranged around the circumference of the cutter cylinder 100, so that each cutter head 200 is subjected to more uniform force when the cutter cylinder 100 is rotating and cutting. This avoids the problem of uneven force caused by too many or too few cutter heads 200, reduces blade vibration, and improves cutting stability and accuracy. Figure 1 The side structure of the cutting tool is shown, with dashed lines indicating the outer contours of the obscured tool barrel 100 and the cutting head 200, thus forming a staggered step 202 with a gradient difference from the abrasive layer 203. The four cutting heads 200 form four corresponding chip removal grooves 201. The number of chip removal grooves 201 matches the number of cutting heads 200, ensuring that chips generated by each cutting head 200 can be discharged promptly through adjacent chip removal grooves 201, resulting in higher chip removal efficiency. This avoids interference and accumulation of chips generated by different cutting heads 200, ensuring continuous and efficient cutting operations.

[0030] According to a preferred embodiment, a plurality of symmetrical fixing holes 102 are provided axially on the outer peripheral surface of the cutter barrel 100. The symmetrically arranged fixing holes 102 are formed radially through the outer side of the cutter barrel 100. The plurality of symmetrical fixing holes 102 provided axially on the outer peripheral surface of the cutter barrel 100 provide installation positions for fixing the cutter barrel 100 to other components (such as tool holders or machine spindle connectors). The symmetrical structure ensures that the cutter barrel 100 is subjected to uniform force during fixing, avoiding deformation or displacement of the cutter barrel 100 due to uneven fixing force, and ensuring stable connection between the cutter barrel 100 and other components. The fixing holes 102 are formed radially through the outer side of the cutter barrel 100, which facilitates the passage of fasteners such as bolts, simplifies the installation operation. At the same time, the through structure can improve the fixing strength, prevent the cutter barrel 100 from loosening during high-speed rotating cutting, and ensure the overall operational stability of the nesting cutter.

[0031] According to a preferred embodiment, the device further includes a tool holder 300 fixedly connected to the tool barrel 100. The tool holder 300 is located on the side of the tool barrel 100 away from the cutter head 200, and the radius of the tool holder 300 is larger than the radius of the tool barrel 100. The tool holder 300, fixedly connected to the tool barrel 100, provides a transition structure for the connection between the nesting tool and the machine spindle. The location of the tool holder 300 on the side of the tool barrel 100 away from the cutter head 200 prevents the tool holder 300 from interfering with the cutting operation of the cutter head 200. The larger radius of the tool holder 300 increases the contact area between the tool holder 300 and the machine spindle, improves the stability of the connection between the nesting tool and the spindle, reduces the shaking of the tool body during high-speed rotation, and at the same time, the larger radius of the tool holder 300 can better withstand the torque generated during cutting, preventing the tool holder 300 from being damaged due to excessive torque, and ensuring the safe and stable operation of the nesting tool.

[0032] According to a preferred embodiment, the tool holder 300 has a threaded hole 301 on its axis for connection with the spindle. The threaded hole 301 on the axis of the tool holder 300 allows for quick and precise connection between the tool holder 300 and the machine spindle via threaded fasteners such as bolts. The threaded connection offers high connection strength and stability, preventing the nesting tool from detaching from the spindle during high-speed rotation and cutting, thus ensuring operational safety. Simultaneously, the threaded connection facilitates the installation and removal of the nesting tool. When the nesting tool requires maintenance, replacement of the cutter head 200 or the abrasive layer 203, the nesting tool can be quickly removed from the spindle, improving maintenance and replacement efficiency, reducing downtime, and enhancing overall production efficiency.

[0033] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection scope. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. This utility model specification contains multiple inventive concepts; phrases such as "preferred" or "according to a preferred embodiment" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept. Throughout the text, the feature introduced by "preferred" is only an optional mode and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A nesting cutter for easy material feeding, used to be mounted on a machine spindle for nesting cutting, characterized in that, It includes a cutter barrel (100) and a cutter head (200) coaxially arranged with the cutter barrel (100). The interior of the cutter barrel (100) is configured with a cylindrical material groove (101). The cutter head (200) is arc-shaped and is located on the outer edge of the material groove (101) on one side of the cutter barrel (100). A plurality of cutter heads (200) are arranged symmetrically around the circumferential center of the cutter barrel (100), and a chip removal groove (201) is formed between two adjacent cutter heads (200) and the cutter barrel (100). The cutter heads (200) are offset in the radial direction of the cutter barrel (100) to form an offset step (202) between the cutter head (200) and the cutter barrel (100). A sanding layer (203) is provided on the outer surface of the cutter head (200) to cover the cutter head (200) and the offset step (202).

2. The easy-to-use blanking tool according to claim 1, characterized in that, The abrasive layer (203) is formed by spraying diamond abrasive onto the misaligned step (202) between the cutting head (200) and the cutting barrel (100).

3. The easy-to-use blanking tool according to claim 2, characterized in that, The thickness of the abrasive blade layer (203) is between 0.3 mm and 0.4 mm.

4. The easy-to-use blanking tool according to claim 3, characterized in that, The cutter head (200) forms a misaligned step (202) with the cutter barrel (100) on both radial sides, with a radial range between 0.15 mm and 0.2 mm.

5. The easy-to-use blanking tool according to claim 4, characterized in that, One of the at least two adjacent cutting heads (200) forming the chip removal groove (201) has an inclined surface facing the outer end face of the chip removal groove (201) to form the chip removal groove (201) which gradually decreases from the outside to the inside.

6. The easy-to-use blanking tool according to claim 5, characterized in that, The blade barrel (100) forming the chip removal groove (201) is radially offset on both sides, wherein, The two sides of the cutter barrel (100) forming the chip removal groove (201) are arranged in an inclined manner from the inside to the outside.

7. The easy-to-use blanking tool according to claim 6, characterized in that, There are four arc-shaped cutter heads (200), which are evenly arranged around the circumference of the cutter barrel (100) to form four corresponding chip removal grooves (201).

8. The easy-to-use blanking tool according to claim 7, characterized in that, The outer peripheral surface of the cutter barrel (100) is provided with a plurality of symmetrical fixing holes (102) in the axial direction. The symmetrically arranged fixing holes (102) are formed by radially penetrating the cutter barrel (100) from the outside.

9. The easy-to-use blanking tool according to claim 8, characterized in that, It also includes a handle (300) fixedly connected to the cutter barrel (100), the handle (300) being disposed on the side of the cutter barrel (100) away from the cutter head (200), and the radius of the handle (300) being greater than the radius of the cutter barrel (100).

10. The easy-to-use blanking tool according to claim 9, characterized in that, The tool holder (300) has a threaded hole (301) on its axis for connecting with the spindle.

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