Numerical control machine head with coaxial double cutters

Abstract

The utility model discloses a double-cutter coaxial numerical control machine head which comprises a main shaft, an output end of the main shaft is provided with a mounting portion, the mounting portion is provided with a first cutter and a second cutter, the first cutter is mounted at the bottom of the mounting portion, and the second cutter is sleeved on the mounting portion and located above the first cutter. The radial size of the second cutter is greater than that of the first cutter; a palm pressing device is further included, the palm pressing device comprises a palm pressing unit, a first receding part matched with the mounting part is arranged in the palm pressing unit, and the mounting part penetrates through the palm pressing unit from top to bottom. The two cutters are installed on the main shaft, the plane and the side face of a plate can be machined, the cutter changing time is shortened, and the machining efficiency is improved; and the plate is further pressed during machining through the pressing palm device, so that the plate is prevented from shaking during machining, and the machining precision is improved.

Description

Technical Field

[0001] The utility model belongs to the field of sheet processing, and particularly relates to a numerical control machine head with two coaxial knives. Background Technique

[0002] In the current production process of panel furniture, especially for panel workpieces that need to process multiple types of grooves, the processing highly relies on manual operation during the process. The operator not only needs to manually load and unload the materials, frequently move the workpieces up and down, but also needs to manually flatten the workpieces by hand so that the equipment can use vacuum adsorption to clamp them. Additionally, the operator needs to manually push the workpieces to make them close to the X and Y axis references of the equipment. This process is not only time-consuming and laborious but also vulnerable to human factors, making it difficult to guarantee the processing accuracy. Although advanced equipment such as six-sided numerical control drilling machines has emerged on the market, which can perform six-sided drilling and groove processing on the top and side surfaces, these devices usually cannot process multiple types of grooves on the top and side surfaces with the same tool. This means that the tool needs to be frequently changed during the processing, which not only reduces the processing efficiency but also increases the cost and complexity of tool change.

[0003] In the prior art, for example, the patent document with the publication number CN221247886U discloses a multifunctional sheet processing device, including a tool holder mechanism. Different tools are stored in the tool holder mechanism for automatic tool change by the first processing mechanism. Although this device improves the processing efficiency through automatic tool change, when multiple types of grooves need to be processed on the sheet, the tool needs to be frequently changed. On the one hand, multiple tool changes increase the tool change time during the processing, which reduces the processing efficiency to a certain extent. On the other hand, the more tools there are, the more preparation work is required before processing, such as tool loading and tool alignment, which also reduces the processing efficiency to a certain extent. Summary of the Invention

[0004] Aiming at the problems in the prior art, the utility model proposes a numerical control machine head with two coaxial knives. By installing two knives on the main shaft, it can process the plane and side surfaces of the sheet, reduce the tool change time, and improve the processing efficiency.

[0005] The utility model is implemented as follows: a double-knife coaxial CNC machine head is installed on a plate processing device, and the plate processing device drives the CNC machine head to process the plate; the CNC machine head includes a spindle, and the output end of the spindle is provided with a rotatably connected mounting portion for mounting a tool, and the mounting portion is provided with a first tool and a second tool; wherein, the first tool is installed at the bottom of the mounting portion, and the second tool is sleeved on the mounting portion and is located above the first tool; the radial dimension of the second tool is greater than the radial dimension of the first tool; the first tool is used for grooving the plane of the plate, and the second tool is used for grooving the side of the plate, when the first tool and the second tool are installed on the spindle at the same time, the spindle can process the plane and the side of the plate, reducing the tool change time and improving the processing efficiency; when the radial dimension of the second tool is greater than the radial dimension of the first tool, it can prevent the first tool from contacting the side of the plate when the second tool grooves the side of the plate, avoiding the first tool damaging the plate when the second tool is working, and improving the reliability of the CNC machine head.

[0006] It also includes a palm pressing device, which includes a palm pressing unit that reciprocates up and down, and the middle part of the palm pressing unit is connected along the axis direction of the main shaft to form a first avoidance part that matches the mounting part; when the first tool is working, the palm pressing unit presses the plate, and the first avoidance part avoids the second tool; when the second tool is working, the second tool passes through the palm pressing unit from top to bottom and emerges from the first avoidance part. When the palm pressing device is used to process the plate, it further fixes the plate to prevent the plate from shaking during processing, thereby improving the processing accuracy.

[0007] Preferably, a ring-shaped brush unit is provided at the bottom of the palm pressing unit. The brush unit is matched with the palm pressing unit and includes a fixing portion and a brush portion. When processing the plate, the brush portion contacts the plate. The brush portion includes a plurality of short-haired brush-like bristles, which are implanted at the bottom of the fixing portion. The bristle bundle diameter is 3 to 6 mm, and the distance between each bristle is 6 to 10 mm, and the array is uniform. The bristles have a certain flexibility, so that the brush portion has flexibility. When the palm pressing device contacts the plate, the brush portion can prevent the palm pressing unit from scratching the plate, thereby improving the reliability of the palm pressing unit.

[0008] Specifically, the inner wall of the fixing portion is provided with a plurality of evenly arranged chip blowing holes, the chip blowing holes facing the first tool or the second tool. The chip blowing holes are used to blow air to the tool being processed to prevent chips from remaining on the first tool or the second tool after processing, thereby improving the processing accuracy of the first tool or the second tool.

[0009] Specifically, the palm pressing device further includes a dust removal unit, a dust removal port of the dust removal unit passes through the side wall of the palm pressing unit from the outside to the inside and is connected to the first air-avoiding portion to form a dust removal chamber, and the dust removal chamber is connected to the outside through the first air-avoiding portion. The dust removal unit is used to suck away the debris dropped from the first tool or the second tool to prevent the debris from scattering everywhere and polluting the environment.

[0010] Specifically, a sealing unit is further provided on the top of the palm pressing unit, and a second air-avoiding portion corresponding to the first air-avoiding portion is provided in the middle of the sealing unit, and the radial dimension of the second air-avoiding portion is smaller than the radial dimension of the first air-avoiding portion. The dust removal port of the dust removal unit is connected to the first air-avoiding portion. When the dust removal unit is working, the suction force at the dust removal port will be dispersed to the upper and lower ends of the first air-avoiding portion. The sealing unit is used to cover part of the first air-avoiding portion, reducing the opening at the upper end of the first air-avoiding portion, so that the suction force from the dust removal port is concentrated on the lower end of the first air-avoiding portion, thereby improving the dust removal effect of the dust removal unit.

[0011] Preferably, the palm pressing device further comprises a first guide device, the first guide device comprises a first guide rail and a first slider, the first guide rail extends along the movement direction of the palm pressing unit and is in transmission connection with the palm pressing unit. The first guide device is used to guide the palm pressing unit during movement, improve the smoothness of the movement of the palm pressing unit, and prevent the palm pressing unit from deviating during movement, thereby improving the movement accuracy of the palm pressing unit.

[0012] Preferably, the palm pressing device further comprises a first driving unit adapted to the first guide device, the output end of the first driving unit being in transmission connection with the palm pressing unit for driving the palm pressing unit to move up and down reciprocatingly. The first driving unit is used to provide power for the palm pressing unit to move up and down reciprocatingly, so as to realize automatic lifting of the palm pressing unit.

[0013] Specifically, the output end of the first driving unit is provided with a first floating joint, and the first driving unit is transmission-connected to the palm pressing unit via the first floating joint. The first floating joint is used to prevent the palm pressing unit from getting stuck during the movement due to an error between the movement direction of the output end of the first driving unit and the guide direction of the first guide device, thereby improving the movement smoothness of the palm pressing unit.

[0014] Preferably, it further includes a second driving unit fixedly connected to the plate processing equipment, a third driving unit for driving the main shaft to move up and down, and a second floating joint disposed between the second driving unit and the third driving unit. One end of the second floating joint is connected to the output end of the second driving unit, and the other end is drivingly connected to the output end of the third driving unit. The second driving unit, the second floating joint, and the third driving unit are arranged in sequence from top to bottom. By connecting the output end of the second driving unit and the output end of the third driving unit, the main shaft can achieve the effect of multi-stage lifting. On the one hand, the main shaft can be compatible with plates of different thicknesses, improving the practicability of the main shaft; on the other hand, due to the height difference between the first tool and the second tool, after the first tool finishes processing, the main shaft makes multi-stage lifting so that the second tool reaches the processing position, improving the convenience of processing.

[0015] Specifically, an installation plate is further provided between the third driving unit and the main shaft. The installation plate is connected to both the third driving unit and the main shaft at the same time; a plurality of second sliders are further provided on the installation plate. The second sliders are slidably connected to the plate processing equipment and are used for guiding when the main shaft moves up and down. The second sliders are used to ensure the movement direction of the main shaft during lifting, prevent the main shaft from skewing during movement, and further cause the tool to skew, thus improving the processing accuracy.

[0016] The beneficial effects of the present invention:

[0017] The present invention provides a numerically controlled machine head with two coaxial knives. By installing two tools on the main shaft, the plane and side of the plate can be processed, reducing the tool change time and improving the processing efficiency; further, the pressing device presses the plate more tightly during processing to prevent the plate from shaking during processing, improving the processing accuracy. Description of the Drawings

[0018] Figure 1 It is the overall schematic diagram of the numerically controlled machine head of the present invention;

[0019] Figure 2 It is the schematic diagram of the main shaft of the numerically controlled machine head of the present invention;

[0020] Figure 3 It is the schematic diagram of the pressing device of the numerically controlled machine head of the present invention;

[0021] Figure 4 It is another schematic diagram of the pressing device of the numerically controlled machine head of the present invention;

[0022] Figure 5 It is the schematic diagram of the pressing unit, the brush unit, and the sealing unit of the numerically controlled machine head of the present invention;

[0023] Figure 6Schematic diagram of the pressing unit of the numerical control head of the present utility model;

[0024] Figure 7 Schematic diagram of the brush unit of the numerical control head of the present utility model.

[0025] Reference numerals:

[0026] 1, main shaft; 2, pressing device; 3, second driving unit; 4, third driving unit; 5, second floating joint; 11, mounting part; 12, first tool; 13, second tool; 21, pressing unit; 22, brush unit; 23, sealing unit; 24, dust removal unit; 25, first driving unit; 26, first floating joint; 27, first guiding device; 211, first clearance part; 212, dust removal cavity; 221, fixing part; 222, brush part; 231, second clearance part; 271, first guide rail; 272, first slider; 2211, chip blowing hole. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0028] As Figures 1-7 shown, a numerical control head with two coaxial knives is installed on a sheet processing device, and the numerical control head is driven by the sheet processing device to process the sheet. The numerical control head includes a main shaft 1. A rotatably connected mounting part 11 is provided at the output end of the main shaft 1 for mounting tools. The mounting part 11 is provided with a first tool 12 and a second tool 13. Among them, the first tool 12 is mounted at the bottom of the mounting part 11, and the second tool 13 is sleeved on the mounting part 11 and is located above the first tool 12. The radial dimension of the second tool 13 is larger than the radial dimension of the first tool 12. The first tool 12 is used for grooving the plane of the sheet, and the second tool 13 is used for grooving the side of the sheet. When both the first tool 12 and the second tool 13 are mounted on the main shaft 1, the main shaft 1 can process the plane and side of the sheet, reducing the tool change time and improving the processing efficiency. When the radial dimension of the second tool 13 is larger than that of the first tool 12, it can prevent the first tool 12 from contacting the side of the sheet when the second tool 13 grooves the side of the sheet, avoiding damage to the sheet by the first tool 12 when the second tool 13 is working and improving the reliability of the numerical control head.

[0029] In this embodiment, it also includes a second drive unit 3 fixedly connected to the plate processing equipment, a third drive unit 4 driving the spindle 1 to move up and down, and a second floating joint 5 arranged between the second drive unit 3 and the third drive unit 4, one end of the second floating joint 5 is connected to the output end of the second drive unit 3, and the other end is transmission-connected to the output end of the third drive unit 4. The second drive unit 3, the second floating joint 5 and the third drive unit 4 are arranged in sequence from top to bottom, and the output end of the second drive unit 3 is connected to the output end of the third drive unit 4, so that the spindle 1 can achieve the effect of multi-stage lifting. On the one hand, the spindle 1 can be compatible with plates of different thicknesses, which improves the practicality of the spindle 1; on the other hand, due to the height difference between the first tool 12 and the second tool 13, when the first tool 12 is processed, the spindle 1 is lifted and lowered in multiple stages to make the second tool 13 reach the processing position, which improves the convenience of processing.

[0030] In this embodiment, the second driving unit 3 and the third driving unit 4 are both cylinders.

[0031] Specifically, a mounting plate is provided between the third drive unit 4 and the spindle 1, and the mounting plate is connected to the third drive unit 4 and the spindle 1 at the same time; a plurality of second sliders are provided on the mounting plate, and the second sliders are slidably connected to the plate processing equipment and are used to guide the spindle 1 when it moves up and down. The second sliders are used to ensure the movement direction of the spindle 1 when it is raised or lowered, to prevent the spindle 1 from tilting when it moves, thereby causing the tool to tilt, and to improve the processing accuracy.

[0032] It also includes a palm pressing device 2, which includes a palm pressing unit 21 that reciprocates up and down, and the middle part of the palm pressing unit 21 passes through along the axial direction of the main shaft 1 to form a first avoidance portion 211 that matches the mounting portion 11; when the first tool is working, the palm pressing unit presses the plate, and the first avoidance portion avoids the second tool; when the second tool is working, the second tool passes through the palm pressing unit 21 from top to bottom and emerges from the first avoidance portion. When the palm pressing device 2 is used to process the plate, it further fixes the plate to prevent the plate from shaking during processing, thereby improving processing accuracy.

[0033] In this embodiment, a ring-shaped brush unit 22 is provided at the bottom of the pressing palm unit 21. The brush unit 22 is adapted to the pressing palm unit 21 and includes a fixing portion 221 and a brush portion 222. When processing a plate, the brush portion 222 abuts against the plate. The brush portion 222 includes a plurality of short brush-shaped bristles. The bristles are implanted at the bottom of the fixing portion 221, the bristle bundle diameter is 5 mm, the distance between each bristle is 7 mm, and they are evenly arranged in an array. The bristles have a certain flexibility, so that the brush portion 222 has flexibility. When the pressing palm device 2 presses against the plate, the brush portion 222 can prevent the pressing palm unit 21 from scratching the plate, thereby improving the reliability of the pressing palm unit 21.

[0034] Specifically, a plurality of evenly arranged chip blowing holes 2211 are provided on the inner wall of the fixing portion 221. The chip blowing holes 2211 face the first tool 12 or the second tool 13. The chip blowing holes 2211 are used to blow air on the tool being processed to prevent the chips after processing from remaining on the first tool 12 or the second tool 13, thereby improving the processing accuracy of the first tool 12 or the second tool 13.

[0035] Specifically, the pressing palm device 2 further includes a dust removal unit 24. The dust removal port of the dust removal unit 24 passes through the side wall of the pressing palm unit 21 from outside to inside and communicates with the first clearance portion 211 to form a dust removal cavity 212. The dust removal cavity 212 communicates with the outside through the first clearance portion 211. The dust removal unit 24 is used to suck away the chips falling from the first tool 12 or the second tool 13 to prevent the chips from scattering everywhere and polluting the environment.

[0036] In this embodiment, the dust removal unit 24 is a dust suction hood.

[0037] Specifically, a sealing unit 23 is further provided on the top of the pressing palm unit 21. A second clearance portion 231 corresponding to the first clearance portion 211 is provided in the middle of the sealing unit 23. The radial dimension of the second clearance portion 231 is smaller than the radial dimension of the first clearance portion 211. The dust removal port of the dust removal unit 24 communicates with the first clearance portion 211. When the dust removal unit 24 works, the suction force at the dust removal port will be dispersed to the upper and lower ends of the first clearance portion 211. The sealing unit 23 is used to cover part of the first clearance portion 211, reducing the opening at the upper end of the first clearance portion 211, so that the suction force at the dust removal port is concentrated at the lower end of the first clearance portion 211, thereby improving the dust removal effect of the dust removal unit 24.

[0038] In this embodiment, the sealing unit 23 is a sponge. The sponge has elasticity and can compensate for uneven gaps, thereby eliminating the influence of dimensional errors and assembly errors.

[0039] In this embodiment, the pressing palm device 2 further includes a first guiding device 27. The first guiding device 27 includes a first guide rail 271 and a first slider 272. The first guide rail 271 extends along the moving direction of the pressing palm unit 21 and is in driving connection with the pressing palm unit 21. The first guiding device 27 is used to guide the pressing palm unit 21 during movement, improve the smoothness of the pressing palm unit 21 during movement, and at the same time prevent the pressing palm unit 21 from deviating during movement, thereby improving the movement accuracy of the pressing palm unit 21.

[0040] Specifically, the pressing palm device 2 further includes a first driving unit 25 adapted to the first guiding device 27. The output end of the first driving unit 25 is in driving connection with the pressing palm unit 21 and is used to drive the pressing palm unit 21 to reciprocate up and down. The first driving unit 25 is used to provide power for the reciprocating up and down movement of the pressing palm unit 21 to realize the automatic lifting of the pressing palm unit 21.

[0041] In this embodiment, the first driving unit 25 is a cylinder.

[0042] Specifically, a first floating joint 26 is provided at the output end of the first driving unit 25. The first driving unit 25 is in driving connection with the pressing palm unit 21 through the first floating joint 26. The first floating joint 26 is used to prevent an error between the moving direction of the output end of the first driving unit 25 and the guiding direction of the first guiding device 27, which may cause the pressing palm unit 21 to get stuck during movement, and improve the movement smoothness of the pressing palm unit 21.

[0043] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A CNC machine head with two coaxial knives, installed on a plate processing device, and driven by the plate processing device to process the plate; the CNC machine head comprises a spindle, and the output end of the spindle is provided with a rotatably connected mounting portion for mounting the tool, characterized in that: The mounting portion is provided with a first tool and a second tool; wherein the first tool is mounted on the bottom of the mounting portion, and the second tool is sleeved on the mounting portion and located above the first tool; the radial dimension of the second tool is greater than the radial dimension of the first tool; It also includes a palm pressing device, which includes a palm pressing unit that moves back and forth up and down, and the middle part of the palm pressing unit passes through along the axial direction of the main shaft to form a first avoidance part that is compatible with the mounting part; when the first tool is working, the palm pressing unit presses the plate, and the first avoidance part avoids the second tool; when the second tool is working, the second tool passes through the palm pressing unit from top to bottom and emerges from the first avoidance part.

2. A double-blade coaxial CNC machine head according to claim 1, characterized in that: An annular brush unit is provided at the bottom of the pressing palm unit. The brush unit is matched with the pressing palm unit and comprises a fixing part and a brush part. When processing a plate, the brush part abuts against the plate.

3. A double-blade coaxial CNC machine head according to claim 2, characterized in that: The inner wall of the fixing portion is provided with a plurality of evenly arranged chip blowing holes, and the chip blowing holes face the first tool or the second tool.

4. A double-blade coaxial CNC machine head according to claim 3, characterized in that: The palm pressing device also includes a dust removal unit, a dust removal port of the dust removal unit passes through the side wall of the palm pressing unit from the outside to the inside and is connected with the first air avoidance portion to form a dust removal chamber, and the dust removal chamber is connected with the outside through the first air avoidance portion.

5. A double-blade coaxial CNC machine head according to claim 4, characterized in that: A sealing unit is also provided on the top of the palm pressing unit, and a second space-avoiding portion corresponding to the first space-avoiding portion is provided in the middle of the sealing unit, and the radial dimension of the second space-avoiding portion is smaller than the radial dimension of the first space-avoiding portion.

6. The double-blade coaxial CNC machine head according to claim 1, characterized in that: The palm pressing device also includes a first guide device, which includes a first guide rail and a first slider. The first guide rail extends along the movement direction of the palm pressing unit and is transmission-connected to the palm pressing unit.

7. A double-blade coaxial CNC machine head according to claim 6, characterized in that: The palm pressing device also includes a first driving unit adapted to the first guiding device, and an output end of the first driving unit is transmission-connected to the palm pressing unit for driving the palm pressing unit to reciprocate up and down.

8. The double-blade coaxial CNC machine head according to claim 7, characterized in that: The output end of the first driving unit is provided with a first floating joint, and the first driving unit is transmission-connected with the palm pressing unit via the first floating joint.

9. The double-blade coaxial CNC machine head according to claim 1, characterized in that: It also includes a second drive unit fixedly connected to the plate processing equipment, a third drive unit for driving the main shaft to move up and down, and a second floating joint arranged between the second drive unit and the third drive unit, one end of the second floating joint is connected to the output end of the second drive unit, and the other end is transmission-connected to the output end of the third drive unit.

10. A double-blade coaxial CNC machine head according to claim 9, characterized in that: A mounting plate is also provided between the third driving unit and the main shaft, and the mounting plate is connected to the third driving unit and the main shaft at the same time; a plurality of second sliders are also provided on the mounting plate, and the second sliders are slidably connected to the plate processing equipment and are used for guiding the main shaft when it moves up and down.

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