A stepped jack mill

Abstract

The utility model belongs to mechanical processing tool technical field especially, relate to a stepped jack plug milling cutter, in view of the existing device stepped milling cutter is the integral type structure, when the cutting edge part of milling cutter wears or is damaged in the use process, the whole milling cutter needs to be replaced, has caused the problem of great waste, increased processing cost, present the following scheme, a kind of stepped jack plug milling cutter, including handle connecting rod, the surface of handle connecting rod is equipped with multiple cutting parts;The utility model has the beneficial effects that when some cutting part wears or is damaged, only need to unscrew corresponding positioning screw, can conveniently disassemble and replace the cutting part, do not need to replace milling cutter as a whole, similarly, through the simple plug-in operation of connecting plug rod and connecting jack, single cutting part can also be quickly repaired or replaced, without the aid of complex tool or tedious disassembly, greatly reduce tool use cost, improve the utilization rate.

Description

Technical Field

[0001] This utility model relates to a jacking cutter, specifically a stepped jacking cutter, belonging to the field of machining tool technology. Background Technology

[0002] A milling cutter is a rotary cutting tool with one or more cutting teeth used for milling. In the machining process, drilling, creating annular grooves, or machining holes are required on the product. Therefore, different machining tools need to be set according to different machining functions. For example, when a traditional boring tool is used to bore a hole in a product, each tool can only machine a circular hole of one diameter. Sometimes, it is necessary to machine concentric circles of different diameters, which requires two steps and two tools of different diameters to complete the machining.

[0003] In the prior art, such as the stepped end mill disclosed in announcement number CN220259658U, the chip guide grooves at corresponding positions of multiple cutting edges are connected in sequence. This stepped end mill can solve the problem of inconvenient chip guiding of stepped end mills to a certain extent. However, the aforementioned stepped end mill is an integral structure. During use, when the cutting edge of the end mill is worn or damaged, the entire end mill needs to be replaced, resulting in great waste and increasing processing costs. Utility Model Content

[0004] The purpose of this invention is to provide a stepped insert milling cutter to address the problem that, as the stepped milling cutter in the above-mentioned device has an integral structure, the entire milling cutter needs to be replaced when the cutting edge is worn or damaged during use, resulting in great waste and increased processing costs.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a stepped insert milling cutter, including a tool holder connecting rod;

[0006] The surface of the tool holder connecting rod is fitted with multiple sets of cutting parts, the outer diameter of which increases sequentially. Each set of cutting parts is threaded with a positioning screw, and one end of the positioning screw passes through the cutting part and is threaded into a positioning hole on the surface of the tool holder connecting rod.

[0007] As a further improvement of this utility model: the surface of each group of cutting parts is integrally formed with a smooth transition section, and adjacent cutting parts are smoothly transitioned through the smooth transition section.

[0008] As a further improvement of this utility model: each set of cutting parts has a connecting rod fixedly installed on its surface, and the bottom surface of the cutting part has a connecting hole adapted to the connecting rod. Two adjacent sets of cutting parts are connected to each other by connecting rods and connecting holes.

[0009] As a further improvement of this utility model: each group of cutting parts has a chip removal groove on its surface, and the chip removal grooves between the multiple cutting parts after splicing are arranged in a spiral structure.

[0010] As a further embodiment of this utility model: a guide head is fixedly installed at the end of the tool holder connecting rod. The guide head is tapered, and a cutting part located at the end of the tool holder connecting rod is limited by the guide head.

[0011] As a further embodiment of this utility model: a U-shaped pressure frame is fitted on the surface of the tool holder connecting rod, the U-shaped pressure frame is inserted into the connecting hole opened on the surface of the last set of cutting parts, and an anti-slip nut is screwed onto the surface of the tool holder connecting rod, the anti-slip nut abutting against the surface of the U-shaped pressure frame.

[0012] The beneficial effects of this utility model are:

[0013] This utility model, through the combined use of a tool holder connecting rod, cutting part, smooth transition section, guide head, positioning screw, chip removal groove, connecting hole, connecting rod, U-shaped pressure frame and anti-slip nut, allows for easy disassembly and replacement of a cutting part when it is worn or damaged, simply by unscrewing the corresponding positioning screw, without the need to replace the entire milling cutter. Similarly, through the simple plugging and unplugging operation of the connecting rod and connecting hole, a single cutting part can be quickly repaired or replaced without the need for complex tools or cumbersome disassembly, greatly reducing tool usage costs, shortening downtime for maintenance, and improving equipment utilization.

[0014] The tapered guide head at the end of the tool holder connecting rod can accurately align with the starting position of the stepped insertion hole at the beginning of the machining stage, providing precise guidance for the milling cutter. In addition, the synergistic effect of the U-shaped pressure frame and the anti-slip nut enhances the stability of the milling cutter in the axial and radial directions, prevents displacement of the cutting part during machining, and further improves the consistency of machining accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cutting part, positioning screw, and connecting hole in this utility model;

[0017] Figure 3 This is a schematic diagram of the positioning hole, guide head, and cutting part in this utility model;

[0018] Figure 4 This is a schematic diagram of the cutting part and the connecting rod in this utility model;

[0019] Figure 5 This is a schematic diagram of the connecting socket and U-shaped pressure frame structure in this utility model;

[0020] In the diagram: 1. Tool holder connecting rod; 2. Cutting section; 3. Smooth transition section; 4. Guide head; 5. Positioning screw; 6. Positioning hole; 7. Chip removal groove; 8. Connecting socket; 9. Connecting rod; 10. U-shaped pressure frame; 11. Anti-slip nut. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 5 As shown, a stepped-type insert milling cutter includes a tool holder connecting rod 1;

[0023] The surface of the tool holder connecting rod 1 is fitted with multiple sets of cutting parts 2, the outer diameter of the multiple sets of cutting parts 2 increases sequentially, and each set of cutting parts 2 is threaded with a positioning screw 5. The positioning screw 5 passes through one end of the cutting part 2 and is threaded into the positioning hole 6 opened on the surface of the tool holder connecting rod 1.

[0024] The positioning screw 5 and the positioning hole 6 cooperate to ensure that the circumferential position of each cutting part 2 on the tool holder connecting rod 1 is accurately fixed, so that the cutting part 2 maintains the correct orientation during milling and ensures machining accuracy. When a cutting part 2 is worn or damaged, the cutting part 2 can be easily disassembled and replaced by simply unscrewing the positioning screw 5, without the need to replace the entire milling cutter, reducing tool usage costs, shortening downtime for maintenance, and improving equipment utilization.

[0025] Furthermore, each cutting part 2 has a smooth transition section 3 integrally formed on its surface, and adjacent cutting parts 2 are smoothly transitioned through the smooth transition section 3.

[0026] When the milling cutter rotates and cuts, the smooth transition section 3 allows the cutting part 2 to cut into and out of the workpiece material more smoothly, reducing cutting force fluctuations, reducing vibration and noise, improving the stability of the milling process, and ensuring machining accuracy.

[0027] Furthermore, each set of cutting parts 2 has a connecting rod 9 fixedly installed on its surface, and the bottom surface of the cutting part 2 has a connecting hole 8 that matches the connecting rod 9. Two adjacent sets of cutting parts 2 are connected to each other by connecting rod 9 and connecting hole 8.

[0028] The connecting rod 9 cooperates with the connecting hole 8 to provide precise positioning for adjacent cutting parts 2 in the radial direction, ensuring that multiple cutting parts 2 are precisely aligned on the same axis, making adjacent cutting parts 2 closely connected, effectively enhancing the overall rigidity of the milling cutter and preventing radial displacement of the cutting parts 2 during machining, ensuring the coaxiality of the overall structure of the milling cutter, and thus improving the machining accuracy of the stepped hole. When a cutting part 2 needs to be repaired or replaced, it can be completed by a simple plug-in operation without the need for complex tools or cumbersome disassembly. Example 2

[0029] Improvements based on Example 1:

[0030] Furthermore, each cutting part 2 has a chip removal groove 7 on its surface, and the chip removal grooves 7 between the multiple cutting parts 2 after splicing are arranged in a spiral structure.

[0031] When the milling cutter rotates at high speed to perform cutting operations, the helical chip removal groove 7 enables the chips to move rapidly along the helical trajectory of the chip removal groove 7 away from the machining area under the action of centrifugal force, effectively preventing the chips from accumulating in the hole and greatly improving the chip removal efficiency.

[0032] Furthermore, a guide head 4 is fixedly installed at the end of the tool holder connecting rod 1. The guide head 4 is tapered, and a cutting part 2 located at the end of the tool holder connecting rod 1 is limited by the guide head 4.

[0033] At the beginning of the machining process, the tapered guide head 4, with its sharp shape, can easily and accurately align with the starting position of the stepped insertion hole, providing precise guidance for the subsequent cutting operation of the milling cutter. The limiting effect of the guide head 4 on the end cutting part 2 makes the overall positioning of the milling cutter more stable during the machining process, ensuring that the milling cutter always maintains the correct position when rotating and cutting.

[0034] Furthermore, a U-shaped pressure bracket 10 is fitted on the surface of the tool holder connecting rod 1. The U-shaped pressure bracket 10 is inserted into the connecting hole 8 opened on the surface of the last set of cutting parts 2. An anti-slip nut 11 is screwed onto the surface of the tool holder connecting rod 1. The anti-slip nut 11 abuts against the surface of the U-shaped pressure bracket 10.

[0035] The U-shaped clamp 10 is inserted into the connecting hole 8 of the last set of cutting parts 2, which can constrain all cutting parts 2 in the axial direction. When the milling cutter rotates and cuts, it can effectively prevent the cutting parts 2 from moving axially along the tool holder connecting rod 1. Together with the anti-slip nut 11, it enhances the overall stability of the milling cutter in the radial direction.

[0036] Working principle: First, prepare the tool holder connecting rod 1 and multiple sets of cutting parts 2. Place the multiple sets of cutting parts 2 sequentially onto the surface of the tool holder connecting rod 1. Since the outer diameter of the multiple sets of cutting parts 2 increases sequentially, they can be easily installed in order. Each set of cutting parts 2 has a positioning screw 5 on its surface. Align the positioning screw 5 with the positioning hole 6 on the surface of the tool holder connecting rod 1, and then rotate the positioning screw 5 clockwise so that it passes through the cutting part 2 and is threaded into the positioning hole 6, thus firmly fixing the cutting part 2 onto the tool holder connecting rod 1. Each set of cutting parts 2 has a smooth transition section 3 integrally formed on its surface. Adjacent cutting parts 2 are smoothly transitioned through the smooth transition section 3, making the cutting process smoother during milling. Simultaneously, each set of cutting parts 2 has a connecting rod 9 fixedly installed on its surface, and a connecting hole 8 adapted to the connecting rod 9 is opened on its bottom surface. During installation, insert the connecting rod 9 of an adjacent set of cutting parts 2 into the connecting hole 8 of another set of cutting parts 2 to achieve a tight connection between adjacent cutting parts 2, enhancing the overall stability of the milling cutter structure.

[0037] The U-shaped pressure frame 10 is fitted onto the surface of the tool holder connecting rod 1 and inserted into the connecting hole 8 opened on the surface of the last set of cutting parts 2 to further enhance the stability of the overall structure of the milling cutter. Then, the anti-slip nut 11 is screwed onto the surface of the tool holder connecting rod 1 and rotated to make it abut against the surface of the U-shaped pressure frame 10. Through the cooperation between the anti-slip nut 11 and the U-shaped pressure frame 10, the cutting part 2 is prevented from axially moving on the tool holder connecting rod 1, ensuring the stability and reliability of the milling cutter during the machining process.

[0038] Start the milling machine. During the rotation of the milling cutter, the guide head 4 first enters the starting position of the hole to be machined. Then, multiple sets of cutting parts 2 with progressively increasing outer diameters cut the stepped insertion hole in sequence. During the cutting process, the spiral chip removal groove 7 promptly removes the generated chips. After the machining is completed, turn off the milling machine, remove the milling cutter from the spindle, and perform necessary cleaning and maintenance for the next use.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stepped-type insert milling cutter, characterized in that: Including the tool holder connecting rod (1); The surface of the tool holder connecting rod (1) is fitted with multiple sets of cutting parts (2), the outer diameter of the multiple sets of cutting parts (2) increases sequentially, and each set of cutting parts (2) is threaded with a positioning screw (5). The positioning screw (5) passes through one end of the cutting part (2) and is threaded into the positioning hole (6) opened on the surface of the tool holder connecting rod (1).

2. The stepped-type insert milling cutter according to claim 1, characterized in that: Each cutting part (2) has a smooth transition section (3) integrally formed on its surface, and adjacent cutting parts (2) are smoothly transitioned through the smooth transition section (3).

3. The stepped-type insert milling cutter according to claim 1, characterized in that: Each set of cutting parts (2) is fixedly equipped with a connecting rod (9) on its surface. The bottom surface of the cutting part (2) is provided with a connecting hole (8) that is compatible with the connecting rod (9). Two adjacent sets of cutting parts (2) are connected to each other by connecting rod (9) and connecting hole (8).

4. The stepped-type insert milling cutter according to claim 1, characterized in that: Each cutting part (2) has a chip removal groove (7) on its surface, and the chip removal grooves (7) between the multiple cutting parts (2) after splicing are arranged in a spiral structure.

5. The stepped-type insert milling cutter according to claim 1, characterized in that: A guide head (4) is fixedly installed at the end of the tool holder connecting rod (1). The guide head (4) is tapered, and a cutting part (2) located at the end of the tool holder connecting rod (1) is limited by the guide head (4).

6. The stepped-type insert milling cutter according to claim 1, characterized in that: The surface of the tool holder connecting rod (1) is fitted with a U-shaped pressure frame (10), which is inserted into the connection hole (8) opened on the surface of the last set of cutting parts (2). The surface of the tool holder connecting rod (1) is screwed with an anti-slip nut (11), which abuts against the surface of the U-shaped pressure frame (10).

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