Automatic leveling device and method for fused deposition modeling CNC 3D printing equipment
By designing an automatic leveling device in the fused deposition modeling CNC 3D printing equipment, utilizing the cooperation between the slider and the inclined block and the ball-socket ball head connection, combined with the control of the CNC system, the problem of insufficient parallelism between the end face of the printing nozzle and the workbench is solved, and the bottom layer quality of the parts and the printing efficiency are improved.
Patent Information
- Application Number
- CN202311495580.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-10
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2043-11-10
AI Technical Summary
During the printing process of existing fused deposition modeling CNC 3D printing equipment, it is difficult to ensure the parallelism between the end face of the printing nozzle and the plane of the workbench, resulting in loose adhesion of the bottom layer of the part, affecting printing quality and efficiency.
An automatic leveling device is designed, which includes a base plate, a bottom plate, a driving mechanism and a lead screw. The automatic leveling of the base plate is achieved through the cooperation between the slider and the inclined block and the connection between the ball socket and the ball head. The leveling process is controlled by a numerical control system to improve the accuracy.
It achieves high-precision leveling of the workbench of the fused deposition modeling CNC 3D printing equipment, improving the bottom layer quality of the parts and printing efficiency.
Smart Images
Figure CN117464987B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of fused deposition modeling (FDM) numerical control 3D printing, and in particular to an automatic leveling device and method for fused deposition modeling (FDM) FDM numerical control 3D printing equipment. Background Art
[0002] With the rapid development of fused deposition modeling (FDM) 3D printing technology, the formable size of FDM 3D printing equipment has increased step by step, and the related leveling difficulty has become particularly prominent. During the printing process of FDM 3D printing equipment, the parallelism between the end face of the printing nozzle and the plane of the workbench is the key to whether the bottom layer of the part can be firmly adhered to the surface of the workbench during the subsequent printing process. In order to solve the leveling problem of the workbench of FDM 3D printing equipment, it is urgent to develop an automatic leveling device for FDM 3D printing equipment, which is used to be placed under the workbench and level the workbench to improve the quality of the bottom layer of the part and improve printing efficiency. Summary of the Invention
[0003] The purpose of the present invention is to address the shortcomings of the background technology and provide an automatic leveling device for a fused deposition modeling CNC 3D printing device to automatically level the workbench of the fused deposition modeling CNC 3D printing device, thereby improving the quality of the bottom layer of the parts and improving printing efficiency.
[0004] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:
[0005] An automatic leveling device for a fused deposition modeling (FDM) CNC 3D printing device comprises a base plate, a bottom plate, a drive mechanism and a lead screw. The base plate is provided with two movable sliders, the base plate is fixedly connected to two inclined blocks, the upper inclined surfaces of the sliders and the lower inclined surfaces of the inclined blocks are in sliding contact with each other, the drive mechanism is connected to the sliders via the lead screw, the base plate is provided with a ball socket, the bottom plate is provided with a ball head, and the ball socket is cooperatively connected to the ball head.
[0006] The present invention discloses an automatic leveling device for fused deposition modeling (FDM) CNC 3D printing equipment. When a slider moves, an upper inclined surface of the slider and a lower inclined surface of an inclined block slide to cause the inclined block to rise or fall, thereby causing the inclined block to drive one side of a substrate to rise or fall. The cooperative connection between the ball socket and the ball head provides a movable reference point for the slider during the substrate leveling process, so that the slider can drive one side of the substrate to rise or fall. At the same time, the positions of the two sliders and the position of the ball socket and the ball head form a triangle. When the slider levels the substrate, the ball socket and the ball head are used as the movable reference point. The slider cooperates to adjust the pitch angle of the substrate and withstand the offset generated on the left and right sides of the substrate during leveling, thereby completing the substrate leveling work together, thereby leveling the workbench of the FDM FDM CNC 3D printing equipment.
[0007] As a preferred solution of the present invention, the ball head is located on one side of the base plate, and the two sliders are located on the other side of the base plate, so as to form a stable triangular structure and facilitate angle leveling.
[0008] As a preferred solution of the present invention, a fixed slide groove for the movement of the slider is provided on the bottom plate. The fixed slide groove is provided to facilitate the movement of the slider and can also limit the moving path of the slider, thereby facilitating angle control.
[0009] As a preferred solution of the present invention, a threaded hole matching the lead screw is provided inside the slider, and the lead screw drives the slider to move through the threaded hole. By driving the slider to move through the lead screw, the displacement of the slider can be controlled by the lead screw.
[0010] As a preferred solution of the present invention, a substrate top block is fixedly connected to the bottom of the substrate, and a pad is provided between the substrate top block and the inclined block. By replacing different pads, the thickness of the pad can be adjusted to adapt to sliders and inclined blocks with different inclined angles.
[0011] As a preferred solution of the present invention, a guide column is provided on the bottom plate, the guide column is vertically arranged, the base plate is provided with a guide hole, the guide column and the guide hole are cooperatively connected, guiding the base plate when the base plate is leveled, and limiting the base plate from moving around.
[0012] As a preferred embodiment of the present invention, the top area of the substrate is smaller than the bottom area of the workbench of the fused deposition modeling CNC 3D printing device, which facilitates the installation of the leveling device at the bottom of the workbench and the leveling of the workbench.
[0013] As a preferred solution of the present invention, it further includes a numerical control system, which includes a computer and a laser rangefinder, and the computer is used to control the laser rangefinder and the driving mechanism.
[0014] An automatic leveling method for a fused deposition modeling (FDM) 3D printing device, used in an automatic leveling device for the FDM 3D printing device, comprises the following steps:
[0015] Step S0: the computer controls the laser rangefinder to move to the top of the automatic leveling device of the fused deposition modeling (FDM) 3D printing device, collects height data of three calibration points through the laser rangefinder and marks the three points as a, b, and c;
[0016] Step S1: Taking point a as the reference, calculate the height differences between points b and c compared to the reference point a and record them as △b and △c;
[0017] Step S2: inputting the height difference values △b and △c into the computer;
[0018] Step S3: the computer controls the driving mechanism to rotate so that the inclined block moves in the vertical direction by a distance equal to Δb and Δc;
[0019] Step S4: Repeat steps S1-S3 until Δb and Δc are less than 0.05 mm, and then end the automatic leveling process.
[0020] The present invention discloses an automatic leveling method for fused deposition modeling (FDM) CNC 3D printing equipment. The method controls a leveling device to perform leveling by using a numerical control system. The method has high leveling accuracy and can better match the fused deposition modeling (FDM) CNC 3D printing equipment.
[0021] As a preferred solution of the present invention, the calibration point a is located above the ball socket, and the calibration points b and c are respectively located above the two sliders, which not only facilitates the leveling of the substrate, but also makes the measured data during the leveling process more accurate.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] 1. The present invention provides an automatic leveling device for a fused deposition modeling (FDM) CNC 3D printing device. When the slider moves, the upper inclined surface of the slider and the lower inclined surface of the inclined block slide to cause the inclined block to rise or fall, thereby causing the inclined block to drive one side of the substrate to rise or fall. The cooperative connection between the ball socket and the ball head provides a movable reference point for the slider during the substrate leveling process, so that the slider can drive one side of the substrate to rise or fall. At the same time, the positions of the two sliders and the position of the ball socket and the ball head form a triangle. The ball socket and the ball head serve as the movable reference point. When the slider levels the substrate, the slider adjusts the pitch angle of the substrate and withstands the offset generated on the left and right sides of the substrate during leveling, thereby completing the substrate leveling work together, thereby leveling the worktable of the FDM FDM CNC 3D printing device.
[0024] 2. The present invention provides an automatic leveling method for a fused deposition modeling CNC 3D printing device, which controls the leveling device through a CNC system to perform leveling work. The leveling accuracy is high and can better match the fused deposition modeling CNC 3D printing device. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the structure of the present invention Figure 1 .
[0026] Figure 2 This is a schematic diagram of the structure of the present invention Figure 2 .
[0027] Figure 3 It is a schematic diagram of the connection between the slider and the inclined block of the present invention.
[0028] Markings in the figure: 1-base plate, 2-coupling, 3-driving mechanism, 4-screw, 5-base plate top block, 6-slider, 7-fixed slide groove, 8-bottom plate, 9-guide column, 10-ball socket, 11-ball head, 12-oblique block, 13-pad, 14-guide hole. DETAILED DESCRIPTION
[0029] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be understood as limiting the scope of the present invention to the following embodiments, and all technologies implemented based on the present invention fall within the scope of the present invention.
[0030] Example 1
[0031] like Figure 1-Figure 3 As shown, an automatic leveling device for a fused deposition modeling CNC 3D printing device includes a base plate 1, a bottom plate 8, a drive mechanism 3 and a lead screw 4. Two movable sliders 6 are provided on the bottom plate 8. Two inclined blocks 12 are fixedly connected to the base plate 1. The upper inclined surfaces of the sliders 6 and the lower inclined surfaces of the inclined blocks 12 are in sliding contact with each other. The drive mechanism 3 is connected to the sliders 6 via the lead screw 4. A ball socket 10 is provided on the base plate 1, and a ball head 11 is provided on the bottom plate 8. The ball socket 10 is cooperatively connected to the ball head 11. When the slider 6 moves, the upper inclined surface of the slider 6 and the lower inclined surface of the inclined block 12 slide, causing the inclined block 12 to rise or fall, thereby causing the inclined block 12 to drive one side of the substrate 1 to rise or fall, and the cooperation connection between the ball socket 10 and the ball head 11 provides a movable reference point for the slider 6 during the leveling process of the substrate 1, so that the slider 6 can drive one side of the substrate 1 to rise or fall; at the same time, the positions of the two sliders 6 and the positions of the ball heads 11 of the ball sockets 10 form a triangle, and the ball heads 11 of the ball sockets 10 are used as movable reference points when the slider 6 levels the substrate, and cooperates with the slider 6 to adjust the pitch angle of the substrate 1 and withstand the offset of the left and right sides of the substrate 1 during leveling, thereby completing the leveling of the substrate 1, thereby leveling the workbench of the fused deposition modeling CNC 3D printing equipment.
[0032] like Figure 2 As shown, the ball head 11 is installed on one side of the base plate 8, and the two sliders 6 are installed on the other side of the base plate 8. When leveling, the ball head 11 can better play its role as a movable base point.
[0033] In a preferred embodiment, a threaded hole matching the lead screw 4 is provided inside the slider 6, the lead screw 4 is connected to the threaded hole inside the slider 6, the driving mechanism 3 is connected to the lead screw 4 through the coupling 2, and the lead screw 4 is driven by the driving mechanism 3 to rotate so as to move the slider 6, and then the displacement of the slider 6 is controlled by controlling the rotation of the driving mechanism 3, and the driving mechanism 3 includes a servo motor.
[0034] In a preferred embodiment, a fixed sliding groove 7 for the movement of the slider 6 is provided on the bottom plate 8 to limit the movement path of the slider 6 and facilitate angle control when the base plate 1 is leveled.
[0035] like Figure 3 As shown, a substrate top block 5 is provided below the substrate 1, and a pad 13 is provided between the substrate top block 5 and the bevel block 12. By replacing different pads 13, the thickness of the pad 13 can be adjusted to adapt to the slider 6 and the bevel block 12 with different bevel angles. At the same time, before the substrate 1 is leveled, the distance between the substrate 1 and the bottom plate 8 is adjusted by adjusting the thickness of the bevel block 12 to minimize the deviation of the substrate 1. The substrate top block 5 and the substrate 1 are connected by welding or bolting. Threaded holes are opened in the middle of the substrate top block 5, the bevel block 12 and the pad 13, and the bevel block 12 and the pad 13 are connected to the substrate top block 5 by countersunk bolts.
[0036] like Figure 1 As shown, a guide column 9 is installed on the bottom plate 8, and the guide column 9 is set vertically upward. A guide hole 14 is opened on the base plate 1. The diameter of the guide hole 14 is slightly larger than the diameter of the guide column 9. The guide column 9 is inserted into the guide hole 14 for matching connection. When the base plate 1 is leveled, it guides the base plate 1 and limits the movement of the base plate 1 to the surroundings.
[0037] In a preferred manner, the substrate 1 is smaller than the bottom area of the workbench of the fused deposition modeling CNC 3D printing device, which facilitates the installation of the leveling device at the bottom of the workbench and facilitates the leveling of the workbench.
[0038] A preferred embodiment further includes a numerical control system, wherein the numerical control system includes a computer and a laser rangefinder, and the computer is used to control the laser rangefinder and the driving mechanism.
[0039] Example 2
[0040] Based on Example 1, an automatic leveling method for a fused deposition modeling CNC 3D printing device is provided, which is used in an automatic leveling device for a fused deposition modeling CNC 3D printing device as in Example 1, and includes the following steps:
[0041] Step S0: a computer controls a laser rangefinder to move to a position directly above the automatic leveling device of a fused deposition modeling (FDM) 3D printing device as described in Example 1, and collects height data of three calibration points using the laser rangefinder and marks the three points as a, b, and c.
[0042] Step S1: Taking point a as the reference, calculate the height differences between points b and c relative to reference point a, and record them as △b and △c. Furthermore, the lead of the screw 4 used is 5 mm, that is, the drive mechanism 3 drives the screw 4 to rotate one circle, and the screw 4 drives the slider 6 to move 5 mm in the fixed slide 7. Furthermore, the upper inclined surface of the slider 6 and the lower inclined surface of the inclined block 12 are both at an angle of 45 degrees. Let the substrate rising / falling distance be x. According to trigonometric functions, we get: x = screw 4 lead * tan45°, that is, the substrate rising / falling distance = screw 4 lead;
[0043] Step S2: Input the values of the lead of the screw 4 and the ascending / descending distance of the substrate 1, △b and △c, into the parameters of the gear molecular ratio of the computer;
[0044] Step S3: The computer controls the rotation of the driving mechanism 3 so that the lead screw 4 drives the slider 6 to move a displacement equal to the set △b and △c values, thereby making the inclined block 12 move a distance equal to △b and △c in the vertical direction, thereby driving the substrate top block 5 to produce an upward / downward displacement to level the substrate 1.
[0045] Step S4: After the computer's numerical control instruction for leveling is completed, steps S1-S3 are repeated until Δb and Δc are less than 0.05 mm, and the automatic leveling process is terminated.
[0046] In a preferred embodiment, the calibration point a is located above the ball head 11, and the calibration points b and c are located above the two sliders 6, respectively. This not only facilitates the leveling of the substrate 1, but also makes the measured data during the leveling process more accurate.
[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An automatic leveling device for a fused deposition modeling CNC 3D printing device, characterized in that: The invention comprises a base plate (1), a bottom plate (8), a driving mechanism (3) and a lead screw (4), wherein two movable sliders (6) are provided on the bottom plate (8), two inclined blocks (12) are fixedly connected to the base plate (1), the upper inclined surface of the slider (6) and the lower inclined surface of the inclined block (12) are in sliding contact with each other, the driving mechanism (3) is connected to the slider (6) via the lead screw (4), a ball socket (10) is provided on the base plate (1), a ball head (11) is provided on the base plate (8), and the ball socket (10) is matched with the ball head (11); the ball head (11) is located on one side of the base plate (8), and the two sliders (6) are located on the other side of the base plate (8); a base plate top block (5) is fixedly connected to the bottom of the base plate (1), and a pad (13) is provided between the base plate top block (5) and the inclined block (12); by replacing different pads, the pad thickness can be adjusted to adapt to sliders and inclined blocks with different inclined surface angles.
2. The automatic leveling device of the fused deposition modeling CNC 3D printing device according to claim 1, characterized in that: A fixed sliding groove (7) for the movement of the slider (6) is provided on the bottom plate (8).
3. The automatic leveling device of the fused deposition modeling CNC 3D printing device according to claim 1, characterized in that: A threaded hole matching the lead screw (4) is provided inside the slider (6), and the lead screw (4) drives the slider (6) to move through the threaded hole.
4. The automatic leveling device for a fused deposition modeling CNC 3D printing device according to claim 1, characterized in that: A guide column (9) is provided on the bottom plate (8), and the guide column (9) is vertically arranged. The base plate (1) is provided with a guide hole (14), and the guide column (9) and the guide hole (14) are cooperatively connected.
5. The automatic leveling device for the fused deposition modeling CNC 3D printing device according to claim 1, characterized in that: The top area of the substrate (1) is smaller than the bottom area of the workbench of the fused deposition modeling CNC 3D printing device.
6. The automatic leveling device for a fused deposition modeling CNC 3D printing device according to any one of claims 1 to 5, characterized in that: It also includes a numerical control system, which includes a computer and a laser rangefinder, and the computer is used to control the laser rangefinder and the driving mechanism (3).
7. An automatic leveling method for a fused deposition modeling CNC 3D printing device, used for the automatic leveling device for a fused deposition modeling CNC 3D printing device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step S0: a computer controls a laser rangefinder to move to a position directly above the automatic leveling device of the fused deposition modeling (FDM) 3D printing apparatus according to any one of claims 1 to 6, and collects height data of three calibration points through the laser rangefinder and marks the three points as a, b, and c; Step S1: Taking point a as the reference, calculate the height differences between points b and c compared to the reference point a and record them as △b and △c; Step S2: inputting the height difference values △b and △c into the computer; Step S3: the computer controls the driving mechanism (3) to rotate, thereby causing the inclined block (12) to move in the vertical direction by a distance equal to △b and △c; Step S4: Repeat steps S1-S3 until △b and △c are less than 0.05 mm, and then end the automatic leveling process.
8. The automatic leveling method of the fused deposition modeling CNC 3D printing device according to claim 7, characterized in that: The calibration point a is located above the ball head (11), and the calibration points b and c are located above the two sliders (6), respectively.