Magnetic type high-precision easy-to-switch 3D printing composite milling main shaft

Abstract

The invention relates to the technical field of 3D printing, and provides a magnetic type high-precision easily-switched 3D printing composite milling spindle which comprises a machine tool body, a machine tool Z shaft is fixedly mounted on the machine tool body, a Z-shaft motion platform is slidably mounted on the machine tool Z shaft, and a supporting plate is mounted on the Z-shaft motion platform in an inserted mode. The stepping motor is started to drive the driving gear to rotate, the driving gear rotates to drive the incomplete gear disc to rotate, the incomplete gear disc drives the fixing support to rotate by 90 degrees so that the machining head can be replaced, coordinates are not changed, and the situation that the efficiency and precision of 3D printing are lost due to the fact that the position of the machining head is changed is avoided.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, specifically to a magnetically attached, high-precision, easily switchable 3D printing composite milling spindle. Background Technology

[0002] 3D printing technology has become a global research hotspot, with some media outlets even referring to it as the third industrial revolution. This digital manufacturing model eliminates the need for complex processes, large machine tools, and a large workforce; it can print three-dimensional parts of any shape directly from computer graphics data, making production more flexible and faster. 3D printing can quickly process parts that are difficult to manufacture using traditional methods, offering significant advantages for complex components. These advantages have made 3D printing a technological trend, with widespread applications in fields such as architectural design, medical assistance, industrial design, aerospace, food, and animation modeling.

[0003] Currently, 3D printing nozzles and milling cutters are not interchangeable, requiring constant switching, which is cumbersome. Existing devices can change the position of metal parts by translation, allowing different processing heads to process the metal parts. However, the coordinates are different after translation, requiring the coordinates to be redefined, which leads to a loss of efficiency and accuracy in 3D printing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a magnetically attached, high-precision, easily switchable 3D printing composite milling spindle, which solves the problem that changing the position of the machining head will lead to a loss of efficiency and accuracy in 3D printing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A magnetic high-precision easily switchable 3D printing composite milling spindle includes a machine tool body, on which a machine tool Z-axis is fixedly installed, and a Z-axis motion platform is slidably installed on the machine tool Z-axis, with a support plate inserted into the Z-axis motion platform; The support plate is equipped with an adjustment mechanism for quickly switching 3D printing composite milling mechanisms; The support plate is equipped with a limiting mechanism to limit the milling mechanism.

[0006] Preferably, the adjustment mechanism includes a support frame fixedly mounted on a support plate, a stepper motor fixedly mounted on the support frame, and a drive gear fixedly mounted on the output end of the stepper motor.

[0007] Preferably, the adjustment mechanism further includes a T-shaped pin that is slidably mounted on the support plate, and one end of the T-shaped pin is fixedly mounted with an incomplete gear disk that meshes with the drive gear.

[0008] Preferably, the adjustment mechanism further includes a thrust bearing fixedly mounted on the support plate and the incomplete gear disk, and a spring is sleeved on the T-shaped pin shaft, with the spring located between the two sets of thrust bearings.

[0009] Preferably, the limiting mechanism includes four sets of suction cup electromagnets fixedly installed on the support plate, and each set of suction cup electromagnets is fixedly installed with a connecting cone block.

[0010] Preferably, the limiting mechanism further includes four sets of fixing blocks fixedly installed on the incomplete gear disk, and each set of fixing blocks has a conical groove for cooperating with the connecting cone block.

[0011] Preferably, a fixing bracket is fixedly installed on the support plate, four sets of screws threadedly connected to the support plate are installed on the fixing bracket, a milling head is fixedly installed on the fixing bracket, and a 3D printing head is fixedly installed on the fixing bracket.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention adjusts the mechanism by starting a stepper motor to drive a drive gear to rotate, which in turn drives a partially rotating gear disk. The partially rotating gear disk then rotates the fixed support by 90°, allowing the processing head to be replaced while maintaining the same coordinates. This avoids the loss of efficiency and accuracy in 3D printing caused by changing the position of the processing head.

[0013] 2. This invention, through the setting of a limiting mechanism, simultaneously activates four sets of suction cup electromagnets, causing the T-shaped pin to slide on the support plate. The spring contracts under force, allowing the connecting cone block to be precisely inserted into and fit into the conical groove. It also finely adjusts the position of the incomplete gear disk, ensuring that the processing head remains in a fixed position even under external force. This avoids the situation where gear backlash causes the processing head to move during operation, affecting the accuracy of 3D printing. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the positional relationship between the machine tool body and the Z-axis of the present invention; Figure 3 This is a schematic diagram of the overall structure of the fixing bracket of the present invention; Figure 4 This is a schematic diagram of the incomplete overall structure of the gear disk of the present invention; Figure 5 This is a schematic diagram of the overall internal structure of the support plate of the present invention.

[0015] In the diagram: 1. Machine tool body; 11. Machine tool Z-axis; 12. Z-axis motion platform; 13. Support plate; 2. Adjustment mechanism; 21. Support frame; 22. Stepper motor; 23. Drive gear; 24. T-pin; 25. Incomplete gear disk; 26. Thrust bearing; 27. Spring; 3. Limiting mechanism; 31. Suction cup electromagnet; 32. Connecting cone block; 33. Fixing block; 34. Conical groove; 4. Fixed bracket; 41. Screw; 42. Milling head; 43. 3D printing head. Detailed Implementation

[0016] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0017] Example 1 Since changing the position of the machining head can lead to a loss of efficiency and accuracy in 3D printing, in order to solve this problem, refer to Figures 1-5 This embodiment proposes a magnetically attached high-precision easily switchable 3D printing composite milling spindle, including a machine tool body 1, a machine tool Z-axis 11 fixedly mounted on the machine tool body 1, a Z-axis motion platform 12 slidably mounted on the machine tool Z-axis 11, a drive mechanism mounted on the machine tool Z-axis 11 to allow the Z-axis motion platform 12 to move on the machine tool Z-axis 11, a support plate 13 inserted and mounted on the Z-axis motion platform 12, which can be disassembled as needed, a fixed bracket 4 fixedly mounted on the support plate 13, four sets of screws 41 threadedly connected to the support plate 13 mounted on the fixed bracket 4, the fixed bracket 4 is fixedly mounted on the support plate 13 by the four sets of screws 41 threadedly connected to the support plate 13, a milling head 42 fixedly mounted on the fixed bracket 4, a 3D printing head 43 fixedly mounted on the fixed bracket 4, the distance between the tip of the milling head 42 and the axis of rotation of the fixed bracket 4 is equal to the distance between the tip of the 3D printing head 43 and the axis of rotation of the fixed bracket 4; The support plate 13 is equipped with an adjustment mechanism 2 for quickly switching the 3D printing composite milling mechanism, and a limiting mechanism 3 for limiting the milling mechanism. These features can improve the efficiency and accuracy of 3D printing when the equipment is working.

[0018] The adjustment mechanism 2 includes a support frame 21 fixedly mounted on the support plate 13, a stepper motor 22 fixedly mounted on the support frame 21, a drive gear 23 fixedly mounted on the output end of the stepper motor 22, a T-shaped pin 24 slidably mounted on the support plate 13, an incomplete gear disk 25 meshing with the drive gear 23 fixedly mounted on one end of the T-shaped pin 24, and a thrust bearing 26 fixedly mounted on the support plate 13 and the incomplete gear disk 25, so that the incomplete gear disk 25 and the support plate 13 interact. The internal spring 27 does not twist during rotation. The spring 27 is sleeved on the T-shaped pin 24, which allows the incomplete gear disk 25 to quickly return to its original position. The spring 27 is located between the two sets of thrust bearings 26. When the processing head needs to be replaced, the stepper motor 22 is started to drive the drive gear 23 to rotate. The drive gear 23 rotates and drives the incomplete gear disk 25 to rotate. The incomplete gear disk 25 drives the fixed bracket 4 to rotate 90°, so that the processing head is replaced and the coordinates remain unchanged. This avoids the loss of efficiency and accuracy in 3D printing caused by changing the position of the processing head. Example 2 Because the 3D printing spindle experiences relatively small forces while the milling spindle experiences larger forces, and due to gear backlash, both the printing and milling spindles wobble under stress, resulting in significant errors. To address this issue, [referencing...] Figures 1-5 The limiting mechanism 3 includes four sets of suction cup electromagnets 31 fixedly mounted on the support plate 13. Each set of suction cup electromagnets 31 is fixedly mounted with a connecting cone block 32. The working part of the connecting cone block 32 is shaped like a frustum that fits into the corresponding frustum of the conical groove 34 to achieve positioning and fastening. The working surface of this connecting cone block 32 is different from ordinary ones; it is specially customized to protrude the frustum. The tilt angle is the same as that of the conical groove 34, and the height is 2mm lower. The limiting mechanism 3 also includes four sets of fixing blocks 33 fixedly mounted on the incomplete gear disk 25. Both the connecting cone block 32 and the fixing blocks 33 are made of iron. Each set of fixing blocks 33 has a conical groove 34 that cooperates with the connecting cone block 32. When needed... When the position of the processing head needs to be limited, four sets of suction cup electromagnets 31 are activated simultaneously. The suction cup electromagnets 31 attract the fixing block 33, which drives the incomplete gear disk 25 to move, causing the T-shaped pin 24 to slide on the support plate 13. The spring 27 is compressed under force, and the connecting cone block 32 can be precisely inserted into the conical groove 34 and fit into the conical groove 34, thereby completing the limitation of the incomplete gear disk 25. Even if external force is applied, the printing spindle and milling spindle will not shake. The position of the incomplete gear disk 25 is also finely adjusted, making the position of the processing head more accurate and avoiding the situation where gear backlash causes the processing head to move during operation, which affects the accuracy of 3D printing.

[0019] Working principle: When the processing head needs to be replaced, the stepper motor 22 is started to drive the drive gear 23 to rotate. The drive gear 23 rotates and drives the incomplete gear disk 25 to rotate. The incomplete gear disk 25 drives the fixed bracket 4 to rotate 90°, so that the processing head is replaced and the coordinates remain unchanged. When the position of the processing head needs to be limited, four sets of suction cup electromagnets 31 are started at the same time. The suction cup electromagnets 31 attract the fixed block 33. The fixed block 33 drives the incomplete gear disk 25 to move, so that the T-shaped pin 24 slides on the support plate 13. The spring 27 is compressed under force, and the connecting cone block 32 can be accurately inserted into the conical groove 34 and fit into the conical groove 34. The position of the incomplete gear disk 25 is finely adjusted, so that the position of the processing head is more accurate.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetically attached high-precision, easily switchable 3D printing composite milling spindle, comprising a machine tool body (1), characterized in that, The machine tool body (1) is fixedly installed with a machine tool Z-axis (11), and a Z-axis motion platform (12) is slidably installed on the machine tool Z-axis (11). A support plate (13) is inserted and installed on the Z-axis motion platform (12). The support plate (13) is equipped with an adjustment mechanism (2) for quickly switching the 3D printing composite milling mechanism, and the support plate (13) is equipped with a limiting mechanism (3) for limiting the milling mechanism.

2. The magnetically attached high-precision easily switchable 3D printing composite milling spindle according to claim 1, characterized in that, The adjustment mechanism (2) includes a support frame (21) fixedly installed on the support plate (13), a stepper motor (22) fixedly installed on the support frame (21), and a drive gear (23) fixedly installed at the output end of the stepper motor (22).

3. The magnetically attached high-precision easily switchable 3D printing composite milling spindle according to claim 2, characterized in that, The adjustment mechanism (2) also includes a T-shaped pin (24) slidably mounted on the support plate (13), and one end of the T-shaped pin (24) is fixedly mounted with an incomplete gear disk (25) that meshes with the drive gear (23).

4. The magnetically attached high-precision easily switchable 3D printing composite milling spindle according to claim 3, characterized in that, The adjustment mechanism (2) also includes a thrust bearing (26) fixedly installed on the support plate (13) and the incomplete gear disk (25), and a spring (27) is sleeved on the T-shaped pin (24), and the spring (27) is located between the two sets of thrust bearings (26).

5. A magnetically attached high-precision, easily switchable 3D printing composite milling spindle according to claim 4, characterized in that, The limiting mechanism (3) includes four sets of suction cup electromagnets (31) fixedly installed on the support plate (13), and each set of suction cup electromagnets (31) is fixedly installed with a connecting cone block (32).

6. The magnetically attached high-precision easily switchable 3D printing composite milling spindle according to claim 5, characterized in that, The limiting mechanism (3) also includes four sets of fixing blocks (33) fixedly installed on the incomplete gear disk (25), and each set of fixing blocks (33) is provided with a conical groove (34) that cooperates with the connecting cone block (32).

7. A magnetically attached high-precision, easily switchable 3D printing composite milling spindle according to claim 3, characterized in that, A fixed bracket (4) is fixedly installed on the support plate (13). Four sets of screws (41) that are threadedly connected to the support plate (13) are installed on the fixed bracket (4). A milling head (42) is fixedly installed on the fixed bracket (4). A 3D printing head (43) is fixedly installed on the fixed bracket (4).

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