Forming milling cutter with detachable extension bar

Abstract

The utility model discloses a formed milling cutter with a detachable extension bar. The formed milling cutter comprises a cutter bar, a cutter head blade, a first connector and a detachable extension bar assembly, the service life of the cutter can be prolonged, when the cutting edge is abraded, only the abraded cutting edge part needs to be replaced, the whole milling cutter does not need to be discarded, and parts such as a cutter bar of the milling cutter are generally durable and can be used repeatedly, so that the total cost of the cutter is reduced, the machining adaptability can be improved, and when a groove with a large depth needs to be machined, the machining efficiency is improved. The detachable lengthening rod can quickly prolong the effective machining length of the milling cutter, so that the depth position which is difficult to touch originally can be easily cut without being limited by the fixed length of the milling cutter, the machining range is greatly expanded, the lengthening rod can be flexibly mounted according to the actual situation, various complex machining requirements are met, and the machining efficiency is improved. And the adaptability of the milling cutter in different machining scenes is improved.

Description

Technical Field

[0001] This utility model relates to a forming milling cutter, specifically a forming milling cutter with a detachable extension rod, belonging to the field of milling cutter technology. Background Technology

[0002] In modern machining, milling cutters, as an important cutting tool, are widely used in the processing of various workpieces. However, traditional form milling cutters currently have some significant problems in practical use.

[0003] In existing technologies, such as the rapid prototyping milling cutter disclosed in CN207857929U, the forming convex teeth on each cutting edge periodically participate in cutting during rotation, intermittently removing the workpiece's excess material. The forming convex teeth of the rapid prototyping milling cutter are cross-distributed in both the axial and radial directions, cleverly avoiding interference in the forming dimensions. This allows for the formation of grooves with good dimensional accuracy, shape precision, and surface roughness, improving the yield of milling. Simultaneously, the cutting edge stability is good, and the rapid prototyping milling cutter has a long service life. However, in existing technologies, the length of the milling cutter is usually fixed. When machining deep grooves or cutting in narrow but deep spaces, a fixed-length milling cutter often cannot reach the desired machining position, leading to machining difficulties. Furthermore, in existing technologies, the cutting edge cannot be disassembled. When the cutting edge is damaged while other parts are still usable, the entire milling cutter must be replaced due to the inability to disassemble the cutting edge, resulting in wasted resources. Utility Model Content

[0004] The purpose of this invention is to provide a forming milling cutter with a detachable extension rod in order to solve at least one of the above-mentioned technical problems.

[0005] The present invention achieves the above objectives through the following technical solution: a forming milling cutter with a detachable extension rod, comprising a cutter bar, a cutter head fixedly connected to one end of the cutter bar, and a first connector fixedly connected to the end of the cutter bar;

[0006] The end of the blade is symmetrically equipped with detachable cutting edges;

[0007] The surface of the tool holder is also provided with a detachable extension rod assembly, which includes an extension rod body provided on the surface of the tool holder, a slot opened on the end surface of the extension rod body, an arc-shaped reinforcing plate and a reinforcing screw for connecting the extension rod body to the tool holder.

[0008] As a further improvement of this utility model, chip removal grooves are provided on the surface of the cutter head near each detachable cutting edge.

[0009] As a further improvement of this utility model: the surface of the blade head is symmetrically provided with mounting grooves, and a detachable blade is fixedly connected to the surface of the blade head at the position of the mounting groove by an internal hex screw.

[0010] As a further improvement of this utility model: the surface of the tool holder is fixedly connected with arc-shaped reinforcing plates in a circular array, and each arc-shaped reinforcing plate is threaded with a reinforcing screw. The arc-shaped reinforcing plates are fixedly connected to the extension rod body through the reinforcing screws.

[0011] As a further improvement of this utility model: the end of the extension rod body is fixedly connected to a second connector, the slot and the first connector are compatible, and the first connector and the second connector have the same cross-sectional area.

[0012] As a further improvement of this utility model: a positioning groove is provided on the surface of the tool holder, and a positioning block that matches the size of the positioning groove is fixedly connected to the end surface of the extended rod body.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model is equipped with a detachable cutting edge, which can extend the service life of the tool. When the cutting edge is worn, only the worn cutting edge part needs to be replaced, instead of discarding the entire milling cutter. The shank and other parts of the milling cutter are usually quite durable and can be used multiple times, thereby reducing the overall cost of the tool.

[0015] On the one hand, it is easy to maintain and repair. The screw connection makes it simple and quick to replace the blade. If the blade is damaged or worn during processing, it can be replaced in a short time, reducing downtime and improving production efficiency. At the same time, the detachable blade can be cleaned and maintained separately, making it easier to remove chips and oil stains from the blade, maintaining the sharpness and precision of the blade, and also making it easier to inspect and repair the blade, extending the service life of the blade.

[0016] 2. This utility model is equipped with a detachable extension rod assembly, which can improve the adaptability of processing. When it is necessary to process grooves with a deep depth, the detachable extension rod can quickly extend the effective processing length of the milling cutter, so that depth positions that were originally difficult to reach can be easily cut. It is no longer limited by the fixed length of the milling cutter itself, which greatly expands the processing range and can cope with different processing scenarios. Whether it is processing deep grooves on large workpieces or in situations where space is limited but depth is required, the extension rod can be flexibly installed according to the actual situation to meet various complex processing needs and improve the adaptability of the milling cutter in different processing scenarios.

[0017] On the one hand, it is easy to install and disassemble. The detachable design between the extension rod body and the milling cutter rod allows the operator to quickly install the extension rod body when deep groove machining is required, without complicated tools and cumbersome operating procedures. When deep groove machining is not required, the extension rod can be easily disassembled for easy storage and transportation without taking up too much space.

[0018] 3. This utility model is equipped with a chip removal groove, which can quickly remove chips. A large number of chips are generated during the milling process. The chip removal groove can provide a smooth discharge channel for the chips, allowing the chips to leave the milling area quickly and avoiding chip accumulation that affects the milling progress. 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 disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the extended rod body of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the tool holder and the tool head in this utility model. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the connection structure between the tool holder and the tool head in this utility model. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the connection structure between the tool holder and the tool head in this utility model. Figure 3 .

[0025] In the diagram: 1. Tool holder, 2. Tool head, 3. Mounting slot, 4. Blade, 5. Socket head screw, 6. First connector, 7. Detachable extension rod assembly, 71. Extension rod body, 72. Second connector, 73. Slot, 74. Positioning block, 75. Arc-shaped reinforcing plate, 76. Reinforcing screw, 77. Positioning slot, 8. Chip removal slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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

[0027] like Figures 1 to 6As shown, a forming milling cutter with a detachable extension rod includes a cutter bar 1, a cutter head 2 fixedly connected to one end of the cutter bar 1, and a first connector 6 fixedly connected to the end of the cutter bar 1.

[0028] The end of the cutter head 2 is symmetrically provided with detachable cutting edges 4, which can extend the service life of the cutter. When the cutting edge wears down, only the worn cutting edge 4 needs to be replaced, instead of discarding the entire milling cutter. The shank and other parts of the milling cutter are usually quite durable and can be used multiple times, thereby reducing the overall cost of the cutter.

[0029] The surface of the tool holder 1 is also provided with a detachable extension rod assembly 7. The detachable extension rod assembly 7 includes an extension rod body 71 provided on the surface of the tool holder 1, a slot 73 opened on the end surface of the extension rod body 71, an arc-shaped reinforcing plate 75 for connecting the extension rod body 71 to the tool holder 1, and a reinforcing screw 76. This can improve machining adaptability. When it is necessary to machine a deep groove or to perform cutting operations in some narrow but deep areas, the detachable extension rod can quickly extend the effective machining length of the milling cutter, making it easy to machine depths that were originally difficult to reach. It is no longer limited by the fixed length of the milling cutter itself, and greatly expands the machining range. Example 2

[0030] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0031] The surface of the cutter head 2 is provided with chip removal grooves 8 near each detachable cutting edge 4, which can quickly remove chips. A large number of chips are generated during milling. The chip removal grooves 8 can provide a smooth discharge channel for the chips, allowing the chips to leave the milling area quickly and avoiding chip accumulation that affects the milling progress.

[0032] The surface of the cutter head 2 is symmetrically provided with mounting grooves 3. A detachable cutting edge 4 is fixedly connected to the surface of the cutter head 2 at the position of the mounting groove 3 by an internal hex screw 5. If the cutting edge 4 is damaged or severely worn during the processing, it can be replaced in a short time, reducing downtime and improving milling efficiency. Example 3

[0033] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0034] The surface of the tool holder 1 is fixedly connected with arc-shaped reinforcing plates 75 in a circular array. Each arc-shaped reinforcing plate 75 is threaded with a reinforcing screw 76. The arc-shaped reinforcing plates 75 are fixedly connected to the extension rod body 71 through the reinforcing screws 76, making installation and disassembly convenient. The detachable design between the extension rod body 71 and the tool holder 1 allows the operator to quickly install the extension rod body 71 when deep groove machining is required, without complicated tools and cumbersome operating procedures. When deep groove machining is not required, the extension rod body 71 can be easily disassembled for easy storage and transportation without taking up too much space.

[0035] The end of the extension rod body 71 is fixedly connected to a second connector 72. The slot 73 and the first connector 6 are compatible. The first connector 6 and the second connector 72 have the same cross-sectional area, which facilitates the connection of the extension rod body 71 to the tool bar 1.

[0036] It should be noted that the first connector 6 and the second connector 72 have the same cross-sectional area, and the length of the first connector 6 is longer than that of the second connector 72, which can ensure that both the first connector 6 and the second connector 72 can be fixed at the connection position of the machine tool.

[0037] The surface of the tool holder 1 is provided with a positioning groove 77, and the end surface of the extension rod body 71 is fixedly connected with a positioning block 74 that matches the size of the positioning groove 77, which can quickly position the connection position between the tool holder 1 and the extension rod body 71.

[0038] Working principle: When using this type of forming milling cutter to mill a workpiece, first connect the cutter bar 1 to the machine tool through the first connector 6, then place the workpiece to be processed under the cutter head 2, and then start the machine tool to process the workpiece;

[0039] During processing, the high-speed rotation of the cutter head 2 can drive the cutting edge 4 to rotate on the surface of the workpiece, thereby achieving milling of the workpiece;

[0040] During this process, when the cutting edge 4 is severely worn, in order to ensure the accuracy of milling, the operator can stop the machine tool and remove the milling cutter. Then, with the help of tools, the internal hex screw 5 on the worn cutting edge 4 surface can be removed to replace the cutting edge 4, which can extend the tool life. When the cutting edge 4 is worn, only the worn cutting edge 4 part needs to be replaced, instead of discarding the entire milling cutter. The shank 1 and other parts of the milling cutter are usually quite durable and can be used multiple times, thereby reducing the overall cost of the tool.

[0041] During the processing, when it is necessary to process deep grooves or perform cutting operations in some narrow but deep areas, the operator removes the forming milling cutter and selects an extension rod body 71 of appropriate length. At the same time, the slot 73 on the surface of the extension rod body 71 is fitted onto the first connector 6, and the position of the extension rod body 71 is adjusted so that the positioning block 74 is inserted into the positioning groove 77. This ensures that the screw hole one on the surface of the arc-shaped reinforcing plate 75 corresponds one-to-one with the screw hole two on the surface of the extension rod body 71. Then, the reinforcing screws 76 are screwed on, and the extension rod body 71 is fixed to the cutter shank 1. This can quickly extend the effective processing length of the milling cutter, making it easy to perform cutting operations in depths that were originally difficult to reach. It is no longer limited by the fixed length of the milling cutter itself, greatly expanding the processing range.

[0042] During use, the chips generated during milling can be smoothly discharged through the chip removal groove 8, avoiding chip accumulation that could affect the milling progress.

[0043] 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.

[0044] 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 forming milling cutter with a detachable extension bar, comprising a cutter bar (1), a cutter head (2) fixedly connected to one end of the cutter bar (1), and a first connector (6) fixedly connected to the end of the cutter bar (1). Its features are: The end of the blade (2) is symmetrically provided with detachable blades (4). The surface of the tool bar (1) is also provided with a detachable extension rod assembly (7). The detachable extension rod assembly (7) includes an extension rod body (71) disposed on the surface of the tool bar (1), a slot (73) opened on the end surface of the extension rod body (71), an arc-shaped reinforcing plate (75) for connecting the extension rod body (71) to the tool bar (1), and a reinforcing screw (76).

2. The forming milling cutter with a detachable extension rod according to claim 1, characterized in that: Chip removal grooves (8) are provided on the surface of the cutter head (2) near each of the detachable cutting edges (4).

3. The forming milling cutter with a detachable extension rod according to claim 1, characterized in that: The surface of the blade (2) is symmetrically provided with mounting grooves (3), and a detachable blade (4) is fixedly connected to the surface of the blade (2) at the position of the mounting groove (3) by an internal hex screw (5).

4. The forming milling cutter with a detachable extension rod according to claim 1, characterized in that: The surface of the tool holder (1) is fixedly connected with arc-shaped reinforcing plates (75) in a circular array. Each arc-shaped reinforcing plate (75) is threaded with a reinforcing screw (76). The arc-shaped reinforcing plate (75) is fixedly connected to the extension rod body (71) by the reinforcing screw (76).

5. The forming milling cutter with a detachable extension rod according to claim 1, characterized in that: The end of the extension rod body (71) is fixedly connected to a second connector (72), the slot (73) is adapted to the first connector (6), and the first connector (6) and the second connector (72) have the same cross-sectional area.

6. The forming milling cutter with a detachable extension rod according to claim 1, characterized in that: The tool holder (1) has a positioning groove (77) on its surface, and the end surface of the extension rod body (71) is fixedly connected with a positioning block (74) that matches the size of the positioning groove (77).

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