A precision calibration system of a three-axis engraving and milling machine

Abstract

The utility model relates to a kind of precision calibration systems of three-axis engraving and milling machine, belong to three-axis engraving and milling machine technical field.The precision calibration system of three-axis engraving and milling machine, comprising: workbench, the top of the workbench is provided with several evenly arranged grooves, the top of the workbench is provided with mounting shaft, the bottom of the mounting shaft is equipped with sensor, the top of the workbench is provided with calibration mechanism;Sensor is installed at the bottom of mounting shaft, laser generator is slid in fixed plate by first sliding block, the position of laser generator can be adjusted and aligned with sensor, the precision of three-axis engraving and milling machine mounting shaft can be calibrated, the magnetic block between first sliding block and fixed plate is mutually adsorbed, the position of laser generator can be limited, threaded rod and laser generator cooperation can drive support plate to move downwards to laser generator is fixed, the precision of three-axis engraving and milling machine can be quickly calibrated, improve the calibration precision of three-axis engraving and milling machine.

Description

Technical Field

[0001] This utility model relates to the field of three-axis engraving and milling machine technology, and in particular to a precision calibration system for a three-axis engraving and milling machine. Background Technology

[0002] A CNC engraving and milling machine is a type of CNC machine tool. Generally, it's considered a CNC milling machine that uses small cutting tools, high-power, and high-speed spindle motors. While engraving machines have an advantage, they struggle with materials of high hardness. The emergence of the CNC engraving and milling machine fills this gap. When operating a three-axis CNC engraving and milling machine, a precision calibration system is required for adjustment.

[0003] As shown in the reference case "A CNC Engraving and Milling Machine for Precision Machining" (Announcement No. CN211438928U), the position of the engraving and milling machine is adjusted by controlling the work frame on the computer. The position is assisted by the engraving and milling machine slide. At the same time, the processing material on the worktable is fixed by using the side clamps and fixing rods. During the operation, the angle of the engraving and milling machine is controlled by using the rotating shaft to achieve different levels of precision and different heights. The height, position and even precision of the machine during the engraving and milling process can be adjusted by three controllers with different positions and angles.

[0004] According to the aforementioned references, the fixed shaft on the slide rail of the work frame in the above-mentioned device controls the movement of the work frame. The engraving and milling tool on the surface of the work frame is rotated and finely adjusted in position via a rotating shaft fixed to the work frame, simultaneously controlling the position of the milling cutter and the engraving tool, facilitating engraving and milling. However, when calibrating the precision of the engraving and milling machine, the fixed shaft's adjustment of the position of the milling cutter and the engraving tool is not precise enough, easily leading to deviations. This makes it inconvenient to calibrate the precision of the engraving and milling machine, reducing the usability of the three-axis engraving and milling machine. Utility Model Content Therefore, it is necessary to provide a precision calibration system for a three-axis engraving and milling machine to address the problem of inconvenience in calibrating the precision of the engraving and milling machine.

[0005] The device includes a worktable with several evenly arranged grooves at its top. A mounting shaft is located at the top of the worktable, and a sensor is mounted at the bottom of the mounting shaft. A calibration mechanism is also located at the top of the worktable. The calibration mechanism includes a fixed plate fixedly connected to the front end of the worktable. A laser generator is slidably connected to the top of the fixed plate, and a first slider is fixedly connected to the bottom of the laser generator. The first slider is slidably connected to the inner wall of the fixed plate, and magnetic blocks are fixedly connected to both the bottom of the first slider and the inner wall of the fixed plate. The two magnetic blocks attract each other. A mounting assembly is also located at the top of the worktable.

[0006] In one embodiment, the calibration mechanism further includes a support plate disposed on one side of the laser generator, the support plate being disposed above the fixed plate, and a threaded rod being threadedly connected to one side of the laser generator, one end of the threaded rod passing through the laser generator and rotatably connected to the support plate.

[0007] In one embodiment, a rubber plate is fixedly connected to the bottom end of the support plate.

[0008] In one embodiment, guide rods are fixedly connected to both sides of the top of the support plate, and one end of the guide rod is slidably connected to one side of the workbench.

[0009] In one embodiment, the two guide rods are respectively disposed on both sides of the threaded rod.

[0010] In one embodiment, the mounting assembly includes a reflector disposed on the top of the workbench, with a second slider fixedly connected to the bottom end of the reflector.

[0011] In one embodiment, the second slider engages with the groove.

[0012] In one embodiment, a fixing bolt is threaded onto one side of the top of the reflector, and one end of the fixing bolt passes through one side of the reflector and is fixedly connected to a limit block.

[0013] Beneficial effects 1. In the above-mentioned precision calibration system for a three-axis engraving and milling machine, the sensor is installed at the bottom of the mounting axis. The laser generator slides within the fixed plate via the first slider, allowing the position of the laser generator to be adjusted and aligned with the sensor. This system can calibrate the precision of the mounting axis of the three-axis engraving and milling machine. The magnetic blocks between the first slider and the fixed plate attract each other, generating damping force, which limits the position of the laser generator. The threaded rod, in conjunction with the laser generator, can drive the support plate downward to fix the laser generator. The rubber plate at the bottom of the support plate can increase the friction coefficient between it and the fixed plate. The two guide rods can limit and guide the support plate, enabling rapid calibration of the precision of the three-axis engraving and milling machine and improving its calibration accuracy. 2. When using the optical path calibration method on a three-axis CNC engraving machine, the reflector is embedded in the groove on the worktable via the second slider, which aligns the reflector with the sensor. Then, the position of the laser generator is adjusted to align with the reflector. Adjusting the angle of the reflector can refract the laser onto the sensor, calibrating the axial position of the three-axis CNC engraving machine. The fixing bolt can drive the limit block to fix the reflector, which can improve the calibration accuracy of the three-axis CNC engraving machine and improve its performance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the calibration mechanism structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a partial structural diagram of the calibration mechanism of this utility model; Figure 5 This is a schematic diagram of the installation component structure of this utility model.

[0016] Figure label: 100. Worktable; 200. Groove; 300. Mounting shaft; 310. Sensor; 400. Calibration mechanism; 410. Fixing plate; 420. Laser generator; 430. First slider; 440. Magnetic block; 450. Support plate; 460. Threaded rod; 470. Rubber plate; 480. Guide rod; 490. Mounting assembly; 491. Reflector; 492. Second slider; 493. Fixing bolt; 494. Limiting block. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is combined with Figure 1 - Figure 5 This invention describes the precision calibration system for a three-axis engraving and milling machine.

[0019] In one embodiment, a precision calibration system for a three-axis engraving and milling machine includes a worktable 100. The top of the worktable 100 has several evenly arranged grooves 200. A mounting shaft 300 is provided at the top of the worktable 100, and a sensor 310 is mounted at the bottom of the mounting shaft 300. A calibration mechanism 400 is provided at the top of the worktable 100. The calibration mechanism 400 includes a fixed plate 410 fixedly connected to the front end of the worktable 100. A laser generator 420 is slidably connected to the top of the fixed plate 410. A first slider 430 is fixedly connected to the bottom of the laser generator 420. The first slider 430 is slidably connected to the inner wall of the fixed plate 410. Magnets 440 are fixedly connected to both the bottom of the first slider 430 and the inner wall of the fixed plate 410, and the two magnets 440 attract each other. A mounting assembly 490 is provided at the top of the worktable 100.

[0020] It should be noted that the three-axis engraving and milling machine consists of a worktable 100, a spindle, a transmission mechanism, a guide rail, and a controller. The three-axis engraving and milling machine moves by cooperating with each other in three directions: X-axis, Y-axis, and Z-axis, and can perform multi-directional processing on the workpiece. The controller drives the transmission mechanism and the guide rail to drive the spindle and the cutting tool to process the workpiece along the preset program.

[0021] When calibrating the accuracy of a three-axis engraving and milling machine, the calibration mechanism 400 receives the laser emitted by the laser generator 420 through the sensor 310 at the bottom of the mounting axis 300. The accuracy of the three-axis engraving and milling machine can be calibrated through electrical signals. The laser generator 420 moves in cooperation with the first slider 430 and two magnetic blocks 440 to calibrate the accuracy of the three-axis engraving and milling machine. The mounting component 490 cooperates with the laser generator 420 through the reflector 491 to calibrate three-axis engraving and milling machines with different axes. The laser generator 420, sensor 310 and reflector 491 cooperate to form a laser interferometer to calibrate the three-axis engraving and milling machine without affecting the normal use of the three-axis engraving and milling machine.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, the calibration mechanism 400 also includes a support plate 450 disposed on one side of the laser generator 420. The support plate 450 is disposed above the fixed plate 410. A threaded rod 460 is threadedly connected to one side of the laser generator 420. One end of the threaded rod 460 passes through the laser generator 420 and is rotatably connected to the support plate 450. A rubber plate 470 is fixedly connected to the bottom end of the support plate 450. Guide rods 480 are fixedly connected to both sides of the top of the support plate 450. One end of the guide rod 480 is slidably connected to one side of the worktable 100. The two guide rods 480 are respectively disposed on both sides of the threaded rod 460.

[0023] In this embodiment, sensor 310 is installed at the bottom of mounting shaft 300. Laser generator 420 slides within fixed plate 410 via first slider 430 and is aligned with sensor 310. Laser emitted by laser generator 420 is received by sensor 310, which can detect the accuracy of three-axis engraving and milling machine. Two magnetic blocks 440 can limit the laser generator 420. Rotating threaded rod 460 is threadedly connected to laser generator 420, causing support plate 450 and rubber plate 470 to contact fixed plate 410, thus fixing laser generator 420. Two guide rods 480 can support support plate 450, which can quickly calibrate the accuracy of three-axis engraving and milling machine and improve the use effect of three-axis engraving and milling machine.

[0024] like Figure 5 As shown, the mounting assembly 490 includes a reflector 491 disposed at the top of the workbench 100. A second slider 492 is fixedly connected to the bottom end of the reflector 491. The second slider 492 is fitted into the groove 200. A fixing bolt 493 is threadedly connected to one side of the top of the reflector 491. One end of the fixing bolt 493 passes through one side of the reflector 491 and is fixedly connected to a limit block 494.

[0025] In this embodiment, when calibrating the three-axis engraving and milling machine, the reflector 491 is installed in the groove 200 on the worktable 100 via the second slider 492. The angle of the reflector 491 is adjusted to align with the sensor 310. When the laser generator 420 emits a laser, it comes into contact with the reflector 491, which can refract the laser onto the sensor 310. This allows for calibration of the different axis positions of the three-axis engraving and milling machine. The fixing bolt 493 is threadedly connected to the reflector 491, which drives the limiting block 494 to fix the reflector 491 in place. This allows for rapid calibration of the accuracy of the three-axis engraving and milling machine.

[0026] Working principle: Sensor 310 is installed at the bottom of mounting shaft 300. Laser generator 420 is embedded in fixed plate 410 via first slider 430. First slider 430 drives laser generator 420 to align with sensor 310, calibrating the three-axis engraving and milling machine. First slider 430 limits the position of laser generator 420 by mutual attraction between one magnetic block 440 and another magnetic block 440. Manually rotating threaded rod 460, which is threaded to laser generator 420, drives support plate 450 and rubber plate 470 to move... The downward movement clamps the fixed plate 410. When measuring other axes of the three-axis engraving and milling machine, the reflector 491 is embedded in one of the grooves 200 through the second slider 492, which drives the reflector 491 to align with the sensor 310. The laser generator 420 is aligned with the reflector 491 and emits a laser, which is refracted onto the sensor 310. This allows for the calibration of the three-axis engraving and milling machine. Manually rotating the fixing bolt 493, which is threadedly connected to the reflector 491, drives the limit block 494 to contact the worktable 100 and fix the reflector 491.

[0027] It should be noted that the sensor 310, laser generator 420, and reflector 491 mentioned above are all devices with relatively mature existing technologies. The specific models can be selected according to actual needs. At the same time, the sensor 310 and laser generator 420 can be powered by the built-in power supply or by AC power. The specific power supply method should be selected according to the situation, which will not be elaborated here.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A precision calibration system for a three-axis engraving and milling machine, characterized in that, include: A worktable (100) has several evenly arranged grooves (200) at its top end, a mounting shaft (300) is provided at the top end of the worktable (100), a sensor (310) is installed at the bottom end of the mounting shaft (300), and a calibration mechanism (400) is provided at the top end of the worktable (100). The calibration mechanism (400) includes a fixed plate (410) fixedly connected to the front end of the workbench (100). A laser generator (420) is slidably connected to the top of the fixed plate (410). A first slider (430) is fixedly connected to the bottom of the laser generator (420). The first slider (430) is slidably connected to the inner wall of the fixed plate (410). A magnetic block (440) is fixedly connected to both the bottom of the first slider (430) and the inner wall of the fixed plate (410). The two magnetic blocks (440) attract each other. An installation assembly (490) is provided at the top of the workbench (100).

2. The precision calibration system for a three-axis engraving and milling machine according to claim 1, characterized in that, The calibration mechanism (400) also includes a support plate (450) disposed on one side of the laser generator (420). The support plate (450) is disposed above the fixed plate (410). A threaded rod (460) is threadedly connected to one side of the laser generator (420). One end of the threaded rod (460) passes through the laser generator (420) and is rotatably connected to the support plate (450).

3. The precision calibration system for a three-axis engraving and milling machine according to claim 2, characterized in that, A rubber plate (470) is fixedly connected to the bottom end of the support plate (450).

4. The precision calibration system for a three-axis engraving and milling machine according to claim 2, characterized in that, Guide rods (480) are fixedly connected to both sides of the top of the support plate (450), and one end of the guide rod (480) is slidably connected to one side of the workbench (100).

5. The precision calibration system for a three-axis engraving and milling machine according to claim 4, characterized in that, The two guide rods (480) are respectively disposed on both sides of the threaded rod (460).

6. The precision calibration system for a three-axis engraving and milling machine according to claim 1, characterized in that, The mounting assembly (490) includes a reflector (491) disposed at the top of the workbench (100), and a second slider (492) is fixedly connected to the bottom end of the reflector (491).

7. The precision calibration system for a three-axis engraving and milling machine according to claim 6, characterized in that, The second slider (492) is engaged with the groove (200).

8. The precision calibration system for a three-axis engraving and milling machine according to claim 6, characterized in that, A fixing bolt (493) is threadedly connected to one side of the top of the reflector (491), and one end of the fixing bolt (493) passes through one side of the reflector (491) and is fixedly connected to a limit block (494).

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