Composite coating wear resistant single tooth thread milling cutter

Abstract

The utility model discloses a kind of composite coating anti-abrasion single thread thread milling cutter, including fixed seat, linkage rod, support plate, servo motor, thread milling cutter, transmission rod, workpiece tray and synchronous driving mechanism.The beneficial effects of the utility model are as follows:in the utility model, by setting synchronous driving mechanism, and then by the rotation of synchronous rod respectively drive screw rotating disc and driven disc two synchronous rotation, by screw rotating disc and limit block angle rotation of index plate, and in the rotation period of screw rotating disc, roller slides in cam groove, and drives adjusting rod linkage, and then by passive rod drive linkage rod along vertical reciprocating sliding, and by servo motor drive thread milling cutter rotation, realize the milling operation of screw hole, by single transmission shaft synchronous control index mechanism and milling cutter feed, realize the closed-loop linkage of workpiece rotation angle and milling cutter axial feed, compared with traditional step operation, it also improves processing precision while greatly improving efficiency.

Description

Technical Field

[0001] This utility model relates to a thread milling cutter, specifically a composite-coated wear-resistant single-tooth thread milling cutter, belonging to the field of thread milling cutter technology. Background Technology

[0002] With the development of CNC machining technology, especially the emergence of three-axis linkage CNC machining systems, a more advanced thread machining method—CNC milling of threads—has been realized. Compared with traditional thread machining methods, thread milling has great advantages in terms of machining accuracy and machining efficiency. However, thread milling cutters are required when performing thread milling.

[0003] However, most existing thread milling cutters have various problems. For example, in a composite thread milling cutter disclosed in publication number CN106964827B, although it can directly mill the bottom hole, thread, and finish cutter (thread polishing) in one go, with high processing efficiency, good quality of the machined thread, and extended tool life, in this technical solution and most current thread milling cutters, such as in the multi-hole milling operation of disc-shaped workpieces, when multiple equally or unequally divided thread holes need to be machined on the circumferential surface, the traditional processing mode requires the workpiece to be periodically deflected and positioned under the drive of the indexing mechanism, and the thread milling cutter needs to perform corresponding linkage milling. This method results in the workpiece rotation positioning and the tool feed movement needing to be independently calibrated multiple times. The accumulated error will lead to a decrease in the accuracy of hole position distribution, and also restrict the cycle efficiency of mass production. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to overcome the aforementioned shortcomings in existing technologies by proposing a composite-coated wear-resistant single-tooth thread milling cutter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A composite-coated wear-resistant single-tooth thread milling cutter includes a fixed base, a linkage rod, a support plate, a servo motor, a thread milling cutter, a transmission rod, a workpiece tray, and a synchronous drive mechanism. The linkage rod is slidably connected to the fixed base vertically, the support plate is horizontally fixed to the top of the linkage rod, the servo motor is mounted on the support plate, the thread milling cutter is coaxially connected to the output shaft of the servo motor, the transmission rod is rotatably connected to the fixed base vertically, and the workpiece tray is coaxially fixed to the top of the transmission rod. The synchronous drive mechanism includes a synchronous rod, a spiral turntable, an indexing plate, limit blocks, and a feed unit. The synchronous rod is rotatably connected to the inside of the fixed base. The spiral turntable is coaxially fixed to the synchronous rod. The indexing plate is coaxially fixed to the bottom of the transmission rod. The limit blocks are set at the edge of the indexing plate and are arranged at equal intervals. The edge of the spiral turntable is slidably engaged between two adjacent limit blocks.

[0006] As a further embodiment of this utility model: the feeding unit includes a driven disk, a docking seat, and an adjusting rod. The driven disk is coaxially fixed on the synchronizing rod and located on one side of the spiral turntable. The docking seat is disposed in the fixed seat. The adjusting rod is rotatably connected to the docking seat and located on one side of the driven disk.

[0007] As a further embodiment of this utility model: the feed unit further includes a cam groove and a driven rod. The cam groove is recessed on the driven plate near the adjusting rod. One end of the driven rod is rotatably connected to the linkage rod, and the other end is rotatably connected to the adjusting rod. The end of the adjusting rod away from the driven rod is slidably engaged in the cam groove.

[0008] As a further embodiment of this utility model: a roller is rotatably connected to the end of the adjusting rod away from the passive rod, and the roller is rolled and engaged in the cam groove.

[0009] As a further improvement of this utility model: the thread milling cutter has an anti-wear composite coating on its surface and is a single-tooth structure, and a centering device is provided at the end of the thread milling cutter away from the servo motor.

[0010] As a further improvement of this utility model: the output shaft of the servo motor is provided with a cylindrical cavity, the thread milling cutter is mated in the cavity, and is detachably connected to the output shaft of the servo motor by screws.

[0011] The beneficial effects of this utility model are: In this invention, a synchronous drive mechanism is set up, which drives the spiral turntable and the driven plate to rotate synchronously through the rotation of the synchronous rod. The spiral turntable and the limit block drive the indexing plate to rotate at the same angle. Within one rotation cycle of the spiral turntable, the roller slides in the cam groove and drives the adjusting rod to move in linkage. Then, the passive rod drives the linkage rod to slide back and forth vertically, and the servo motor drives the thread milling cutter to rotate, realizing the milling operation of the thread hole. The indexing mechanism and the milling cutter feed are synchronously controlled by a single transmission shaft to realize the closed-loop linkage between the workpiece rotation angle and the axial feed of the milling cutter. Compared with the traditional step-by-step operation, the efficiency is greatly improved while also improving the machining accuracy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the synchronous drive mechanism of this utility model; Figure 3 This is a schematic diagram of the feed unit structure of this utility model; Figure 4 This is a schematic diagram of the adjusting rod structure of this utility model.

[0013] In the diagram: 1. Fixed seat, 2. Linkage rod, 3. Support plate, 4. Servo motor, 5. Thread milling cutter, 6. Transmission rod, 7. Workpiece tray, 8. Synchronous drive mechanism, 81. Synchronous rod, 82. Spiral turntable, 83. Indexing plate, 84. Limit block, 85. Driven plate, 86. Connecting seat, 87. Adjusting rod, 88. Cam groove, 89. Passive rod, 810. Roller. Detailed Implementation

[0014] 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

[0015] like Figures 1 to 4 As shown, a composite-coated wear-resistant single-tooth thread milling cutter includes a fixed base 1, a linkage rod 2, a support plate 3, a servo motor 4, a thread milling cutter 5, a transmission rod 6, a workpiece tray 7, and a synchronous drive mechanism 8. The linkage rod 2 is slidably connected to the fixed base 1 in a vertical direction. The support plate 3 is horizontally fixed to the top of the linkage rod 2. The servo motor 4 is mounted on the support plate 3. The thread milling cutter 5 is coaxially connected to the output shaft of the servo motor 4. The transmission rod 6 is rotatably connected to the fixed base 1 in a vertical direction. The workpiece tray 7 is coaxially fixed to the top of the transmission rod 6. The synchronous drive mechanism 8 includes a synchronous rod 81, a spiral turntable 82, an indexing plate 83, a limit block 84, and a feed unit. The synchronous rod 81 is rotatably connected to the inside of the fixed base 1. The spiral turntable 82 is coaxially fixed on the synchronous rod 81. The indexing plate 83 is coaxially fixed to the bottom of the transmission rod 6. The limit block 84 is set at the edge of the indexing plate 83, and multiple limit blocks are equidistantly arranged. The edge of the spiral turntable 82 is slidably engaged between two adjacent limit blocks 84. The feed unit includes a driven disk 85, a docking seat 86, and an adjusting rod 87. The driven disk 85 is coaxially fixed on the synchronizing rod 81 and is located on one side of the spiral turntable 82. The docking seat 86 is set in the fixed seat 1. The adjusting rod 87 is rotatably connected to the docking seat 86 and is located on one side of the driven disk 85. The feed unit also includes a cam groove 88 and a driven rod 89. The cam groove 88 is recessed on the driven plate 85 near the adjusting rod 87. One end of the driven rod 89 is rotatably connected to the linkage rod 2, and the other end is rotatably connected to the adjusting rod 87. The end of the adjusting rod 87 away from the driven rod 89 is slidably engaged in the cam groove 88. A roller 810 is rotatably connected to the end of the adjusting rod 87 away from the driven rod 89. The roller 810 is rolled and engaged in the cam groove 88.

[0016] In this invention, a synchronous drive mechanism 8 is set up, which drives the spiral turntable 82 and the driven plate 85 to rotate synchronously through the rotation of the synchronous rod 81. The spiral turntable 82 and the limit block 84 drive the indexing plate 83 to rotate at the same angle. During one rotation cycle of the spiral turntable 82, the roller 810 slides in the cam groove 88 and drives the adjusting rod 87 to move in conjunction. Then, the passive rod 89 drives the linkage rod 2 to slide back and forth vertically, and the servo motor 4 drives the thread milling cutter 5 to rotate, realizing the milling operation of the thread hole. By synchronously controlling the indexing mechanism and the milling cutter feed through a single transmission shaft, a closed-loop linkage between the workpiece rotation angle and the axial feed of the milling cutter is realized. Compared with the traditional step-by-step operation, the efficiency is greatly improved while also improving the machining accuracy. Example 2

[0017] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes: The thread milling cutter 5 has an anti-wear composite coating on its surface and is a single-tooth structure. A centering device is provided at the end of the thread milling cutter 5 away from the servo motor 4. The composite coating increases the anti-wear performance of the thread milling cutter 5, thereby increasing its service life.

[0018] The output shaft of the servo motor 4 is provided with a cylindrical cavity. The thread milling cutter 5 is mated in the cavity and is detachably connected to the output shaft of the servo motor 4 by screws. The screws allow for quick disassembly and replacement between the thread milling cutter 5 and the servo motor 4.

[0019] Working principle: When using this thread milling cutter, the workpiece to be machined is first fixed coaxially on the workpiece tray 7 by a fixing component, such as a clamp, and the thread milling cutter 5 is coaxially fixed with the output shaft of the servo motor 4 by screws. Then, the rotation of the synchronous rod 81 is driven by an external drive device, which drives the spiral turntable 82 and the driven plate 85 to rotate synchronously. The spiral turntable 82 and the limit block 84 drive the indexing plate 83 to rotate at the same angle, thereby driving the workpiece to rotate. During one rotation cycle of the spiral turntable 82, the roller 810 slides in the cam groove 88 and drives the adjusting rod 87 to move in conjunction. Then, the driven rod 89 drives the linkage rod 2 to slide back and forth vertically, and the servo motor 4 drives the thread milling cutter 5 to rotate, thus realizing the milling operation of the thread hole of the workpiece.

[0020] 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.

[0021] 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 composite-coated wear-resistant single-tooth thread milling cutter, comprising a fixed base (1), a linkage rod (2), a support plate (3), a servo motor (4), a thread milling cutter (5), a transmission rod (6), a workpiece tray (7), and a synchronous drive mechanism (8), characterized in that, The linkage rod (2) is slidably connected to the fixed seat (1) in the vertical direction. The support plate (3) is horizontally fixed to the top of the linkage rod (2). The servo motor (4) is set on the support plate (3). The thread milling cutter (5) is coaxially connected to the output shaft of the servo motor (4). The transmission rod (6) is rotatably connected to the fixed seat (1) in the vertical direction. The workpiece tray (7) is coaxially fixed to the top of the transmission rod (6). The synchronous drive mechanism (8) includes a synchronous rod (81), a spiral turntable (82), an indexing plate (83), a limiting block (84), and a feeding unit. The synchronous rod (81) is rotatably connected to the inside of the fixed base (1) along the lateral direction. The spiral turntable (82) is coaxially fixed on the synchronous rod (81). The indexing plate (83) is coaxially fixed to the bottom of the transmission rod (6). The limiting block (84) is set at the edge of the indexing plate (83) and multiple blocks are equidistantly arranged. The edge of the spiral turntable (82) is slidably engaged between two adjacent limiting blocks (84).

2. The composite-coated wear-resistant single-tooth thread milling cutter according to claim 1, characterized in that: The feed unit includes a driven disk (85), a docking seat (86), and an adjusting rod (87). The driven disk (85) is coaxially fixed on the synchronizing rod (81) and located on one side of the spiral turntable (82). The docking seat (86) is set in the fixed seat (1). The adjusting rod (87) is rotatably connected to the docking seat (86) and located on one side of the driven disk (85).

3. The composite-coated wear-resistant single-tooth thread milling cutter according to claim 2, characterized in that: The feed unit also includes a cam groove (88) and a driven rod (89). The cam groove (88) is recessed on the driven plate (85) near the adjusting rod (87). One end of the driven rod (89) is rotatably connected to the linkage rod (2), and the other end is rotatably connected to the adjusting rod (87). The end of the adjusting rod (87) away from the driven rod (89) is slidably engaged in the cam groove (88).

4. The composite-coated wear-resistant single-tooth thread milling cutter according to claim 3, characterized in that: A roller (810) is rotatably connected to one end of the adjusting rod (87) away from the passive rod (89), and the roller (810) is rolled and engaged in the cam groove (88).

5. The composite-coated wear-resistant single-tooth thread milling cutter according to claim 1, characterized in that: The thread milling cutter (5) has an anti-wear composite coating on its surface and is a single-tooth structure. A centering device is provided at the end of the thread milling cutter (5) away from the servo motor (4).

6. The composite-coated wear-resistant single-tooth thread milling cutter according to claim 1, characterized in that: The output shaft of the servo motor (4) is provided with a cylindrical cavity, and the thread milling cutter (5) is mated in the cavity and is detachably connected to the output shaft of the servo motor (4) by screws.

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