CNC machining system and machining method

Abstract

The present application relates to the technical field of machining, and provides a CNC machining system and a machining method.The CNC machining system comprises a cutting device, a deburring device and a control device; the cutting device comprises a workbench, a clamp and a cutting mechanism arranged on the workbench; the cutting mechanism is located above the clamp and can move along a first direction towards the clamp or away from the clamp; the first direction is perpendicular to the workbench; the deburring device comprises a gas storage tank storing high-pressure refrigerant gas, a control valve and a nozzle; the nozzle is arranged on the cutting mechanism and faces the clamp; the nozzle is communicated with an outlet of the gas storage tank through a gas jet pipe; the control valve is arranged between the outlet of the gas storage tank and the nozzle; the control device is arranged on the workbench; the cutting mechanism and the control valve are electrically connected with the control device; the control device controls the cutting mechanism to move along the first direction and cut the workpiece; and the control device controls the opening degree of the control valve to make the nozzle spray the high-pressure refrigerant gas towards the workpiece to remove burrs on the workpiece.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a CNC machining system and machining method. Background Technology

[0002] Currently, with the increasing demands for lightweight and structural strength in consumer electronics products, workpieces using metal-plastic composite structures (such as mobile phone frames) are becoming increasingly common. The manufacturing process for these workpieces typically requires high-precision CNC machining. However, due to the presence of plastic embedded in the workpiece, the CNC cutting process generates adhesive plastic burrs. If these burrs are not removed promptly and thoroughly, they will directly affect the positioning accuracy of subsequent processes, causing machining reference misalignment, and in severe cases, rendering the entire workpiece unusable.

[0003] To address the aforementioned issues, existing manufacturing processes generally employ a split-processing solution. Specifically, after completing a CNC cutting operation, the workpiece is removed from the machine tool. Next, an operator or automated transport device transfers the workpiece to a deburring machine located at a separate station in the production workshop. Inside the deburring machine, burrs adhering to the plastic structure are removed. Finally, the deburred workpiece is transferred back to the CNC station for the next cutting operation. Since complex workpieces typically require multiple, step-by-step cutting operations, the process of removing, transferring, deburring, and returning the workpiece needs to be repeated 3 to 4 times.

[0004] Existing technologies require multiple transfers of workpieces during processing, increasing the risk of collisions and contamination, resulting in long production cycles, reduced production efficiency, and high costs. Summary of the Invention

[0005] This invention provides a CNC machining system and machining method to solve the problems of multiple workpiece transfers, high risk of workpiece damage, long production cycle time, and reduced production efficiency in existing CNC machining systems.

[0006] This invention provides a CNC machining system, comprising: a cutting device, including: a worktable and a fixture and a cutting mechanism disposed on the worktable, the fixture being used to fix a workpiece; the cutting mechanism being located above the fixture and capable of moving along a first direction toward or away from the fixture; the first direction being perpendicular to the worktable; a deburring device, including: a gas tank storing high-pressure refrigerated gas, a control valve, and a nozzle, the nozzle being disposed on the cutting mechanism and facing the fixture; the nozzle being connected to the outlet of the gas tank via a jet pipe, and the control valve being disposed between the outlet of the gas tank and the outlet of the nozzle; a control device, disposed on the worktable, the cutting mechanism and the control valve being electrically connected to the control device, the control device controlling the cutting mechanism to move along the first direction and cut the workpiece; the control device controlling the opening of the control valve to cause the nozzle to spray high-pressure refrigerated gas toward the workpiece to remove burrs from the workpiece.

[0007] According to a CNC machining system provided by the present invention, the deburring device further includes a compressor, a condenser, a throttling device, and an evaporator. The outlet of the compressor, the condenser, the throttling device, the evaporator, and the inlet of the compressor are connected in sequence. The evaporator is arranged around the outer periphery of the gas storage tank.

[0008] According to a CNC machining system provided by the present invention, the deburring device further includes a first heat insulation component, which is disposed on the outer periphery of the evaporator.

[0009] According to a CNC machining system provided by the present invention, the deburring device further includes a second heat insulation component and a main body. The gas storage tank, the compressor, the condenser, the throttling component and the evaporator are all disposed within the main body. The condenser is disposed above the evaporator, and the second heat insulation component is disposed between the evaporator and the condenser.

[0010] According to a CNC machining system provided by the present invention, the deburring device further includes a drying filter disposed between the throttling element and the evaporator; and / or, the deburring device further includes a radiator disposed close to the condenser.

[0011] According to a CNC machining system provided by the present invention, the deburring device further includes a one-way valve, which is located at the inlet of the gas storage tank and unidirectionally inputs high-pressure gas into the gas storage tank; and / or, the deburring device further includes a pressure regulating valve, which is located between the outlet of the gas storage tank and the outlet of the nozzle; and / or, the deburring device further includes a heat-insulating adapter pipe, which is provided at the inlet of the gas storage tank and / or the outlet of the gas storage tank.

[0012] According to a CNC machining system provided by the present invention, the jet pipe includes a heat preservation section and a jet section. The inlet of the jet section is connected to the outlet of the gas storage tank through the heat preservation section. The jet section is rotatably connected to the cutting mechanism, and the nozzle is located at the outlet of the jet section.

[0013] According to a CNC machining system provided by the present invention, the cutting mechanism includes a support frame, a spindle, a turret, a first drive member, and a second drive member. The support frame is disposed on the worktable, and the spindle, the first drive member, and the second drive member are all disposed on the support frame. The spindle extends along a first direction, the turret is disposed at one end of the spindle near the worktable, and the nozzle is disposed on the spindle. The first drive member and the second drive member are both connected to the spindle. The first drive member drives the spindle to move back and forth along the first direction, and the second drive member drives the spindle to rotate along its own axis. The first drive member and the second drive member are both electrically connected to the control device.

[0014] According to a CNC machining system provided by the present invention, the cutting device further includes a rotating component disposed on the worktable, a fixture disposed on the rotating component, the rotating component being movable back and forth on the worktable along a second direction and / or a third direction, the second direction and the third direction being perpendicular to each other and both being perpendicular to the first direction; and / or, the cutting device further includes a third driving component disposed on the worktable, the rotating component having a rotating shaft, the third driving component being connected to the rotating shaft, the third driving component driving the rotating component to rotate around the rotating shaft along a preset direction, the preset direction including at least one of the first direction, the second direction and the third direction; the third driving component being electrically connected to the control device.

[0015] The present invention also provides a CNC machining method based on the CNC machining system described in any of the above claims, comprising: controlling a fixture to move along a first preset trajectory; controlling a cutting mechanism to move along a first direction toward a direction close to the worktable, so that the workpiece in the fixture is located below the cutting mechanism; controlling the cutting mechanism to cut the workpiece; after cutting, controlling the cutting mechanism to drive a nozzle to move along the first direction toward the worktable; controlling the fixture to move along a second preset trajectory, so that the workpiece in the fixture is located within the spray range of the nozzle; and controlling an air jet pipe to spray air toward the workpiece to remove burrs from the surface of the workpiece.

[0016] The CNC machining system and method provided by this invention, by placing a deburring device near the cutting device and mounting a nozzle on the cutting mechanism that moves with it, achieves uninterrupted continuous machining of cutting and deburring. The nozzle is connected to a gas storage tank via a jet pipe, and both the control valve and the cutting mechanism are connected to a control device. The control device controls the cutting mechanism to cut the workpiece. After cutting, the system can directly switch to the deburring device, which sprays high-pressure chilled gas onto the workpiece to remove burrs from its surface in situ. This structure eliminates the need to move the workpiece, avoiding damage, and simultaneously shortens the production cycle time, thereby improving machining efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention 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 invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the CNC machining system provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the CNC machining system provided by the present invention.

[0020] Figure 3 This is an exploded view of the CNC machining system provided by the present invention.

[0021] Figure 4 This is a schematic diagram of the deburring device provided by the present invention.

[0022] Figure 5 This is a flowchart of the CNC machining method provided by the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0024] Figure label: 100. Cutting device; 110. Worktable; 120. Fixture; 130. Cutting mechanism; 131. Support frame; 132. Spindle; 133. Turret; 140. Rotating component; 150. Nozzle; 160. Liquid storage tank; 170. Housing; 180. Control panel; 190. Indicator light; 200. Deburring device; 201. Gas tank; 202. Jet pipe; 203. Insulation section; 204. Jet section; 205. Compressor; 206. Condenser; 207. Throttling device; 208. Evaporator; 209. First thermal insulation component; 210. Second thermal insulation component; 211. Main body; 212. Dryer filter; 213. Radiator; 214. Check valve; 215. Pressure regulating valve; 216. Insulation adapter pipe; 300. Control device; 400. Workpiece. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention 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 invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] The specific terms used in this specification are for illustrative purposes only and are not intended to limit the illustrated embodiments. For example, expressions such as "same" and "identical" not only indicate a strictly identical state, but also indicate a state with tolerances or differences in the degree of functionality. For example, expressions indicating relative or absolute arrangement such as "in a certain direction," "along a certain direction," "side by side," "perpendicular," "centered on," "concentric," or "coaxial" not only strictly indicate such an arrangement, but also indicate a state of relative displacement by tolerances or angles or distances with the same degree of functionality.

[0027] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0028] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "multiple" means two or more. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified. In the description of the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, B1 and / or B2 can represent: B1 existing alone, B1 and B2 existing simultaneously, and B2 existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0031] A CNC machining system is a manufacturing system that uses a computer numerical control system to automate and precisely control the machining actions of a machine tool. In other words, it is a combination of hardware and software that automatically completes the cutting and machining of parts according to a pre-programmed sequence.

[0032] Plastic burrs are tiny residues formed at the edges of plastic components due to thermal melting or tearing during the cutting process in a CNC machining system. For example, in the mid-frame of a mobile phone with a metal-plastic composite structure, thermoplastic materials such as LCP, PC, and ABS can easily adhere to the surface of the metal substrate during precision milling, affecting assembly and appearance, as well as the positioning / support of subsequent processing steps.

[0033] The following is combined with Figures 1-6 The present invention describes the CNC machining system and machining method.

[0034] refer to Figure 1 and Figure 2 The CNC machining system provided in this embodiment of the invention includes: a cutting device 100, a deburring device 200, and a control device 300.

[0035] The cutting device 100 includes a worktable 110, a fixture 120 disposed on the worktable 110, and a cutting mechanism 130. The fixture 120 is used to fix the workpiece 400. The cutting mechanism 130 is located above the fixture 120 and is movable in a first direction toward or away from the fixture 120; the first direction is perpendicular to the worktable 110. The deburring device 200 includes a gas tank 201 storing high-pressure refrigerated gas, a control valve, and a nozzle. The nozzle is disposed on the cutting mechanism 130 and faces the fixture 120. The nozzle is connected to the outlet of the gas tank 201 through a jet pipe 202, and the control valve is disposed between the outlet of the gas tank 201 and the outlet of the nozzle. A control device 300 is disposed on the worktable 110, and both the cutting mechanism 130 and the control valve are electrically connected to the control device 300. The control device 300 controls the cutting mechanism 130 to move in the first direction and cut the workpiece 400. The control device 300 controls the opening of the control valve so that the nozzle sprays high-pressure refrigerated gas toward the workpiece 400 to remove burrs from the workpiece 400.

[0036] refer to Figure 1 and Figure 2 The worktable 110 serves as the mounting reference for the cutting device 100, providing a stable support platform. The fixture 120 is fixedly mounted on the upper surface of the worktable 110. The fixture 120 is used to position and clamp the workpiece 400, which can be a mobile phone frame made of a metal-plastic composite structure. The fixture 120 can employ a vacuum chuck, electromagnetic chuck, or other clamping mechanism, as long as it can reliably fix the workpiece 400; specific details are not provided here.

[0037] The cutting mechanism 130 is mounted on the worktable 110, located above the fixture 120. The cutting mechanism 130 can move along a first direction, approaching or moving away from the fixture 120. This first direction is perpendicular to the worktable 110; that is, the cutting mechanism 130 rises or falls along the first direction to approach the workpiece 400 mounted on the fixture 120, cut the workpiece 400, and then retracts after processing. In one embodiment, the cutting mechanism 130 moves via a combination of a servo motor and a lead screw. Specifically, the servo motor is mounted on the worktable 110, and its output shaft is coaxially and fixedly connected to the screw end of the lead screw via a coupling. The nut seat of the lead screw is fixedly connected to the cutting mechanism 130. When the output shaft of the servo motor rotates, it drives the lead screw to rotate synchronously, thereby causing the nut seat to move the cutting mechanism 130.

[0038] Furthermore, the cutting mechanism 130 is electrically connected to the control device 300. The control device 300 can control the cutting mechanism 130 to move along the first direction. After moving to the target position, it cuts the workpiece 400 on the fixture 120.

[0039] The deburring device 200 removes burrs from the workpiece 400 by spraying high-pressure chilled gas into the processing area (burr area) of the workpiece 400 to impact the plastic burr area. The deburring device 200 is positioned close to the cutting device 100.

[0040] Specifically, the deburring device 200 includes: a gas storage tank 201, a control valve, and a nozzle. The gas storage tank 201 has a double-layer vacuum insulation structure to prevent heat loss and ensure the gas temperature meets the requirements for cryogenic deburring. High-pressure cryogenic gas, such as dry ice, can be directly stored in the gas storage tank 201. High-pressure cryogenic gas can also be prepared using appropriate methods. The nozzle is located on the cutting mechanism 130, facing the fixture 120, i.e., facing the workpiece 400. The nozzle diameter can be 0.5-1.2 mm, and the spray pressure range is 0.2-0.6 MPa. The nozzle is located on the cutting mechanism 130 and can move with the cutting mechanism 130 to adjust the spray height. In one embodiment, the nozzle is rotatably connected to the cutting mechanism 130, such as by fixing it to the cutting mechanism 130 via a universal bracket. The nozzle can adjust the spray angle of the jet pipe 202 as needed. In one embodiment, the jet pipe 202 is a shaping tube, and the nozzle is fixed to the cutting mechanism 130 through the shaping tube. The shaping tube is deformable and has good rigidity, and once fixed, it will not shift without collision. In actual operation, the angle of the shaping tube can be manually adjusted as needed to ensure that the outlet of the shaping tube is directly facing the processed area.

[0041] Furthermore, a control valve is provided between the outlet of the gas storage tank 201 and the outlet of the nozzle. The control valve can be located at the outlet of the gas storage tank 201, inside the jet pipe 202, at the inlet of the nozzle, or at the outlet of the nozzle. The control valve is electrically connected to the control device 300, and the control device 300 controls the opening degree of the control valve to control the nozzle to spray high-pressure refrigerated gas toward the workpiece 400 to remove burrs on the workpiece 400.

[0042] The CNC machining system provided in this embodiment of the invention features a deburring device 200 positioned near the cutting device 100, and a nozzle mounted on the cutting mechanism 130, moving with the cutting mechanism 130. The nozzle is connected to an air tank 201 via a jet pipe 202. Both the control valve and the cutting mechanism 130 are connected to a control device 300. The control device 300 controls the cutting mechanism 130 to cut the workpiece 400. After cutting, the system can directly switch to the deburring device 200 to spray high-pressure chilled gas onto the workpiece 400, removing burrs from its surface in situ. This achieves uninterrupted continuous machining of cutting and deburring. This structure eliminates the need to move the workpiece 400, preventing damage; simultaneously, it shortens the production cycle time, thereby improving machining efficiency.

[0043] like Figure 4 As shown, the deburring device 200 in this embodiment of the invention further includes a compressor 205, a condenser 206, a throttling device 207, and an evaporator 208. The outlet of the compressor 205, the condenser 206, the throttling device 207, the evaporator 208, and the inlet of the compressor 205 are connected in sequence. The evaporator 208 is arranged around the outer periphery of the gas storage tank 201.

[0044] This invention can prepare high-pressure refrigeration gas, that is, high-pressure gas is concentrated in the gas storage tank 201 for cooling, and the high-pressure gas can reach a low temperature of -100°C. Specifically, the inlet of the gas storage tank 201 is connected to compressed gas. The high-pressure gas enters the gas storage tank 201 through the inlet of the gas storage tank 201, and after forming high-pressure refrigeration gas in the gas storage tank 201, it is sprayed through the nozzle to the position of the workpiece 400 where burrs need to be removed.

[0045] The outlet of compressor 205 is connected to the inlet of condenser 206. The outlet of condenser 206 is connected to the inlet of throttling device 207. The outlet of throttling device 207 is connected to the inlet of evaporator 208. The outlet of evaporator 208 is connected to the inlet of compressor 205. Compressor 205, condenser 206, throttling device 207, and evaporator 208 are connected sequentially to form a closed refrigeration cycle. Evaporator 208 is arranged around the outer periphery of gas receiver 201. It should be noted that refrigerant lines are installed between compressor 205 and condenser 206, between condenser 206 and throttling device 207, between throttling device 207 and evaporator 208, and between evaporator 208 and compressor 205 to form a complete refrigeration cycle.

[0046] Compressor 205 compresses low-pressure, low-temperature refrigerant vapor into high-pressure, high-temperature vapor using mechanical energy. The high-temperature, high-pressure vapor enters condenser 206, which is typically an air-cooled or water-cooled device. In condenser 206, the vapor releases heat to the surrounding environment, its temperature decreases, and it condenses into high-pressure liquid refrigerant. This process is exothermic, with heat transferred to the environment. Throttling device 207 throttles and reduces the pressure of the liquid refrigerant, making it a low-temperature, low-pressure liquid refrigerant (or a gas-liquid two-phase state). Throttling device 207 can be a capillary tube, a thermostatic expansion valve, or an electronic expansion valve. Evaporator 208 is located on the outer periphery of gas tank 201. In one embodiment, evaporator 208 is an annular evaporator 208 to increase heat exchange efficiency. Evaporator 208 absorbs heat from the surrounding area of ​​gas tank 201, causing the low-temperature, low-pressure liquid refrigerant to evaporate into a low-temperature, low-pressure gaseous refrigerant, thereby achieving refrigeration (temperatures can reach -100°C). Low-temperature, low-pressure gaseous refrigerant is drawn into the inlet of compressor 205 and enters the next cycle.

[0047] In this embodiment of the invention, the compressed gas in the gas storage tank 201 is cooled by the evaporator 208, so that the high-pressure gas in the gas storage tank 201 is cooled to the target temperature. This structure does not require the use of dry ice and has good sustainability.

[0048] In some embodiments of the present invention, the deburring device 200 further includes a first thermal insulation component 209, which is disposed on the outer periphery of the evaporator 208 to prevent the loss or depletion of low temperature within the gas storage tank 201. The first thermal insulation component 209 may be made of a material with low thermal conductivity, such as polyurethane foam board, extruded polystyrene board (XPS), liquid nitrogen-based insulation material, aerogel felt, or glass wool.

[0049] In some embodiments of the present invention, the deburring device 200 further includes a second heat insulation component 210 and a main body 211. The gas storage tank 201, compressor 205, condenser 206, throttling component 207 and evaporator 208 are all disposed in the main body 211. The condenser 206 is disposed above the evaporator 208. The second heat insulation component 210 is disposed between the evaporator 208 and the condenser 206.

[0050] The main body 211 serves as the supporting base for the entire deburring device 200. The main body 211 contains multiple mounting areas for fixing the gas storage tank 201, compressor 205, condenser 206, throttling device 207, and evaporator 208, with the condenser 206 positioned above the evaporator 208. The second thermal insulation component 210 is horizontally arranged, completely covering or at least covering the top projection area of ​​the evaporator 208. Hot air generated by the condenser 206 cannot directly flow downwards onto the evaporator 208, and radiant heat is effectively blocked by the insulation layer, thus ensuring that the evaporator 208 can maintain a lower evaporation temperature and avoiding energy loss caused by the clash of hot and cold.

[0051] The second thermal insulation component 210 may be made of a material with low thermal conductivity, such as polyurethane foam board, extruded polystyrene board (XPS), liquid nitrogen-based insulation material, aerogel felt, or glass wool.

[0052] In some embodiments of the present invention, the deburring device 200 further includes a dryer filter 212, which is disposed between the throttling element 207 and the evaporator 208. The dryer filter 212 is used to filter the depressurized refrigerant to ensure that the refrigerant entering the evaporator 208 is dry.

[0053] In some embodiments of the present invention, the deburring device 200 further includes a radiator 213, which is disposed close to the condenser 206 and is used to dissipate heat from the condenser 206. That is, the radiator 213 rapidly removes the heat accumulated on the surface of the condenser 206 by means of forced convection or natural convection, so that the condenser 206 maintains a low condensation temperature.

[0054] The heat sink 213 can be multiple, such as 2, 3, 4, 6, etc. Figure 2 As shown, there are two heat sinks 213. The heat sink 213 can be a fan, such as a centrifugal fan. Centrifugal fans have a spiral airflow and higher air pressure, making them suitable for applications with long air ducts or where greater resistance needs to be overcome.

[0055] In some embodiments of the present invention, the deburring device 200 further includes a one-way valve 214, which is located at the inlet of the gas storage tank 201 to unidirectionally input high-pressure gas into the gas storage tank 201, prevent fluid backflow, and ensure that the high-pressure gas flows in a predetermined direction.

[0056] In some embodiments of the present invention, the deburring device 200 further includes a pressure regulating valve 215, which is located between the outlet of the air tank 201 and the outlet of the nozzle. For example, it can be located at the outlet of the air tank 201, or at the inlet of the jet pipe 202, the outlet of the jet pipe 202, the outlet of the nozzle, etc., to regulate the jet pressure of the nozzle.

[0057] In some embodiments of the present invention, the deburring device 200 further includes an insulated adapter pipe 216, which is provided at the inlet and / or outlet of the gas storage tank 201 to prevent the low-temperature gas in the gas storage tank 201 from being lost or consumed.

[0058] In some embodiments of the present invention, such as Figure 2 As shown, the jet pipe 202 includes an insulation section 203 and a jet section 204. The inlet of the jet section 204 is connected to the outlet of the gas storage tank 201 through the insulation section 203. The jet section 204 is rotatably connected to the cutting mechanism 130, and the nozzle is located at the outlet of the jet section 204. By providing an insulation section 203 between the jet section 204 and the outlet of the gas storage tank 201, this invention ensures that high-pressure refrigerated gas is effectively transmitted to the nozzle, guaranteeing that the nozzle ejects high-pressure refrigerated gas to meet temperature requirements. The rotatable connection of the jet section 204 to the cutting mechanism 130 facilitates adjustment of the nozzle's spray direction. In one embodiment, the jet section 204 is connected to the cutting mechanism 130 via a universal bracket. In another embodiment, the jet section 204 is a shaped tube, allowing the operator to manually adjust the angle of the shaped tube to adjust the nozzle's spray angle.

[0059] In one embodiment of the present invention, reference is made to... Figure 2 and Figure 3 The cutting mechanism 130 includes a support frame 131, a spindle 132, a turret 133, a first drive member, and a second drive member. The support frame 131 is mounted on the worktable 110, and the spindle 132, the first drive member, and the second drive member are all mounted on the support frame 131. The spindle 132 extends along a first direction, and the turret 133 is located at one end of the spindle 132 near the worktable 110. A nozzle is located on the spindle 132. Both the first drive member and the second drive member are connected to the spindle 132. The first drive member drives the spindle 132 to move back and forth along the first direction, and the second drive member drives the spindle 132 to rotate along its own axis. Both the first drive member and the second drive member are electrically connected to the control device 300.

[0060] like Figure 2 As shown, the support frame 131 is fixed to the worktable 110. Specifically, the support frame 131 can be a column structure, providing a mounting base for other components. The spindle 132 has a rotating shaft inside. The spindle 132 extends along a first direction, that is, the spindle 132 is perpendicular to the worktable 110, and the spindle 132 can be slidably mounted on the support frame 131 via a mounting plate.

[0061] The turret 133 is located at the end of the spindle 132 near the worktable 110, i.e., at the lower end of the spindle 132. The turret 133 has multiple tool positions for mounting different tools or functional components. Specifically, the turret 133 adopts an electric or hydraulic turret structure, enabling rapid tool position switching through indexing rotation. A nozzle 150 is also mounted on the turret 133, and a fluid reservoir 160 is provided on the worktable 110. The fluid reservoir 160 stores cutting fluid and contains a pump. The nozzle 150 is connected to the pump in the fluid reservoir 160 via piping, and is used to spray cutting fluid onto the surface of the workpiece 400 to cool the tool, lubricate the cutting zone, and flush away chips. In one embodiment, the fluid reservoir 160 is located below the fixture 120, allowing for the recovery of cutting fluid. In another embodiment, multiple nozzles 150 are provided, distributed around the outer periphery of the tool. It should be noted that the nozzles 150 are made of low-temperature resistant stainless steel to prevent brittleness caused by low temperatures.

[0062] The turret 133 is also equipped with a plug tool holder, which is installed in one of the tool positions. The plug tool holder has a tapered plug that matches the tapered hole at the lower end of the spindle 132. It is used to seal the tapered hole at the front end of the spindle 132 before non-machining periods (such as when spraying chilled gas to remove burrs) to prevent chips, cutting fluid or dust from entering the spindle 132.

[0063] The nozzle is connected to the spindle 132, such as being located on the side of the spindle 132, and rises, falls, and rotates with the spindle 132. In one embodiment, the nozzle can also be fixed on a dedicated tool position of the turret 133, and the jet pipe 202 can be switched to the working position according to actual needs. In one embodiment, the nozzle 150 is integrated with the spray nozzle in a tool position, for example, a dual-channel nozzle 150 is provided, which is connected to the liquid storage tank 160 and the gas storage tank 201 respectively, and is switched by a solenoid valve.

[0064] Both the first and second driving components are mounted on the support frame 131 and connected to the spindle 132. Specifically, the spindle 132 is fixed to the mounting plate, which is slidably connected to the support frame 131. The first driving component, connected to the mounting plate, drives the mounting plate to move the spindle 132, cutting tool, nozzle 150, and spray nozzle upwards or downwards in a first direction to approach the workpiece 400 for cutting or spraying high-pressure refrigerated gas. In this embodiment, the first driving component can be a servo motor. The second driving component drives the spindle 132 to rotate around its own rotation axis. When the second driving component is activated, the internal rotation axis of the spindle 132 rotates at high speed, providing power for cutting.

[0065] Furthermore, both the first and second driving components are electrically connected to the control device 300. The control device 300 controls the first driving component to drive the spindle 132 to move along the first direction to a preset cutting height. The control device 300 controls the second driving component to drive the spindle 132 to rotate, the cutting tool on the turret 133 rotates to the working position, the spindle 132 performs cutting according to the CNC program, and at the same time controls the nozzle 150 to spray cutting fluid for cooling.

[0066] After cutting is completed, the control device 300 controls the second drive component to stop the spindle 132 from rotating, and simultaneously controls the first drive component to drive the spindle 132 upward in the first direction, separating it from the workpiece 400. The control device 300 controls the plug tool holder to rotate to the working position, inserting the plug tool holder into the tapered hole of the spindle 132 to prevent cutting contaminants from entering the spindle 132. The control device 300 controls the control valve to open, the nozzle to start, and sprays high-pressure refrigerant gas toward the workpiece 400 to remove plastic burrs. After deburring is completed, the control device 300 controls the cutting tool in the turret 133 to switch to the working position. If multiple cuts are required, the above steps are repeated. After all machining is completed, the control device 300 controls the first drive component to drive the spindle 132 upward, and the operator or machine operator removes the workpiece 400.

[0067] In some embodiments of the present invention, the clamp 120 can move along a preset direction to adjust the position of the workpiece 400 so that the workpiece 400 to be cut is located directly below the cutting tool. The cutting device 100 also includes a rotating member 140 disposed on the worktable 110, the clamp 120 being disposed on the rotating member 140, the rotating member 140 being able to move back and forth on the worktable 110 along a second direction and / or a third direction, the second direction and the third direction being perpendicular to each other and both being perpendicular to the first direction.

[0068] In one embodiment, a first guide rail extending in a second direction and a second guide rail extending in a third direction are fixedly mounted on the worktable 110. The bottom of the rotating member 140 is provided with a first slider that slides in cooperation with the first guide rail and a second slider that slides in cooperation with the second guide rail. A first drive motor is connected to the first slider and drives the first slider to move the rotating member 140 in the second direction. A second drive motor is connected to the second slider and drives the second slider to move the rotating member 140 in the third direction. Both the first and second drive motors are electrically connected to the control device 300, which can control the operation of the first and second drive motors. Both the first and second drive motors can be servo motors.

[0069] In some embodiments of the present invention, the cutting device 100 further includes a third driving member disposed on the worktable 110, the rotating member 140 having a rotating shaft, the third driving member being connected to the rotating shaft, and the third driving member driving the rotating member 140 to rotate around the rotating shaft in a preset direction, the preset direction including at least one of a first direction, a second direction and a third direction.

[0070] In one implementation, the rotating shaft extends along a first direction, which is the preset direction. The third driving component is fixedly installed at the bottom of the rotating component 140, and the output shaft is connected to the rotating shaft via a reducer or is directly fixed coaxially with the rotating shaft. The third driving component is electrically connected to the control device 300, driving the rotating shaft and the rotating component 140 to rotate around the rotating shaft (first direction), thereby achieving angular positioning of the workpiece 400 in the horizontal direction, such as turning one side of the workpiece 400 towards the cutting tool.

[0071] It should be noted that the extension direction of the rotating shaft is not limited to the first direction. The rotating shaft can also extend along the second or third direction. In this case, the third driving component can drive the rotating component 140 to move the workpiece 400 in pitch or roll motion to meet the requirements of five-axis machining. The preset direction is the extension direction of the rotating shaft, which will not be elaborated here.

[0072] In addition, embodiments of the present invention can be provided with two rotating members 140, one providing rotation of the vertical axis (first direction) and the other providing rotation of the horizontal axis (second direction or third direction).

[0073] In actual operation, the control device 300 controls the rotating component 140 to move along the second and / or third directions, controls the third driving component to drive the rotating component 140 to rotate around a preset direction, and controls the cutting mechanism 130 to move along the first direction, so that the fixture 120 (workpiece 400) is located below the cutting mechanism 130 (tool). When the workpiece 400 moves to the target cutting position, the control device 300 controls the cutting mechanism 130 to cut the workpiece 400. After cutting is completed, the control device 300 controls the cutting mechanism 130 to move along the first direction away from the worktable 110, so that the tool separates from the workpiece 400 and meets the spray distance requirements. The control device 300 controls the rotating component 140 to move along the second and / or third directions, controls the third driving component to drive the rotating component 140 to rotate around a preset direction, so that the position of the workpiece 400 to be deburred is within the spray range of the nozzle, controls the control valve to open, and controls the nozzle to spray high-pressure refrigerated gas toward the workpiece 400 to remove the burrs on the surface of the workpiece 400. After spraying is completed, the control device 300 automatically resets and proceeds to the next process, repeating this cycle until processing is complete. This invention utilizes high-pressure cryogenic gas for deburring, leaving no residue and requiring no cleaning.

[0074] In this embodiment of the invention, by integrating the nozzle into the cutting mechanism 130, the workpiece 400 can be deburred directly without moving after cutting. Furthermore, during the deburring process using high-pressure refrigerant gas, the nozzle can move along the cutting path to remove burrs from the workpiece 400, thus ensuring effective burr removal.

[0075] In some embodiments of the present invention, the cutting device 100 further includes a housing 170, a control panel 180, and indicator lights 190. The worktable 110 and the cutting mechanism 130 are both disposed within the housing 170, and the housing 170 has a through hole for the air jet pipe 202 to pass through. The control panel 180 is fixed to the housing 170 and is electrically connected to the control device 300. The control panel 180 can be positioned at the front for convenient operation (parameter setting) and viewing of the current status of the CNC machining system by the operator. The housing 170 is also provided with indicator lights 190, which can quickly respond and switch to a fault state when the deburring device 200, the cutting device 100, or other components malfunction, and the corresponding CNC control panel 180 will also display its corresponding fault code.

[0076] In some embodiments, the housing 170 is further provided with an opening, and a safety door is rotatably disposed in the opening for easy opening or closing. The safety door is used to isolate internal components, prevent injury to personnel, and provides high safety.

[0077] Table 1 Comparison of technical features between existing technology and the present invention.

[0078] Table 1 compares the technical features of the prior art with those of the present invention. Based on Table 1, the CNC machining system provided by the present invention, compared with the prior art, has a shorter machining cycle time (approximately 40%), a higher yield rate (approximately 15%), a smaller equipment footprint (approximately 30%), and no dry ice consumption, thus saving costs.

[0079] Based on the CNC machining system in any of the above embodiments, this invention also provides a CNC machining method.

[0080] refer to Figure 5 The CNC machining method includes: Step 100, controlling the fixture to move along a first preset trajectory, and controlling the cutting mechanism to move along a first direction toward the worktable, so that the workpiece in the fixture is located below the cutting mechanism. Specifically, controlling the fixture to move horizontally along the first direction and / or the second direction, and controlling the fixture to rotate along at least one of the first, second, and third directions, so that the workpiece in the fixture is located below the cutting mechanism. Controlling the cutting mechanism to move along the first direction toward the worktable, so that the cutting mechanism contacts the workpiece at the position to be cut.

[0081] Step 200: Control the cutting mechanism to cut the workpiece. It should be noted that cutting and fixture movement can be performed alternately.

[0082] Step 300: After cutting is completed, the cutting mechanism is controlled to move the nozzle along the first direction toward the worktable, and the fixture is controlled to move along the second preset trajectory, so that the workpiece in the fixture is within the spray range of the air jet pipe. Specifically, after cutting is completed, the cutting mechanism is controlled to move along the first direction away from the worktable, so that the cutting tool separates from the workpiece. The fixture is controlled to move along the second preset trajectory, so that the workpiece is within the spray range of the nozzle. It should be noted that the second preset trajectory and the first preset trajectory can be the same, and the movement sequence can be the same or different, so that the workpiece processing position always passes through the spray range.

[0083] Step 400: Control the jet nozzle to spray air towards the workpiece to remove burrs from the workpiece surface. During the spraying process, the spray pressure and spraying time can be controlled to quickly remove burrs from the workpiece surface.

[0084] When multiple cutting operations are required, the above operation can be repeated until the machining is completed.

[0085] In this embodiment of the invention, the deburring device and the cutting device are linked by a control device. After the cutting process is completed, the device can switch to the deburring device without moving the workpiece to remove the plastic burrs remaining on the workpiece surface in situ. The deburring path and the cutting path are planned synchronously to achieve uninterrupted continuous processing of "cutting + deburring" with high processing efficiency.

[0086] Figure 6 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 6 As shown, the electronic device may include a processor 610, a communication interface 620, a memory 630, and a communication bus 640. The processor 610, communication interface 620, and memory 630 communicate with each other via the communication bus 640. The processor 610 can call logical instructions from the memory 630 to execute a CNC machining method. This method includes: controlling a fixture to move along a first preset trajectory; controlling a cutting mechanism to move along a first direction toward the worktable, so that the workpiece in the fixture is positioned below the cutting mechanism; controlling the cutting mechanism to cut the workpiece; after cutting, controlling the cutting mechanism to drive a nozzle to move along the first direction toward the worktable; controlling the fixture to move along a second preset trajectory, so that the workpiece in the fixture is within the spray range of the nozzle; and controlling an air jet pipe to spray air toward the workpiece to remove burrs from the workpiece surface.

[0087] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0088] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the CNC machining method provided by the above methods. The method includes: controlling a fixture to move along a first preset trajectory; controlling a cutting mechanism to move along a first direction toward a direction close to the worktable, so that the workpiece in the fixture is located below the cutting mechanism; controlling the cutting mechanism to cut the workpiece; after cutting, controlling the cutting mechanism to drive the nozzle to move along the first direction toward the worktable; controlling the fixture to move along a second preset trajectory, so that the workpiece in the fixture is located within the spray range of the nozzle; and controlling the air jet pipe to spray air toward the workpiece to remove burrs from the surface of the workpiece.

[0089] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the CNC machining method provided by the above methods. The method includes: controlling a fixture to move along a first preset trajectory; controlling a cutting mechanism to move along a first direction toward a direction close to the worktable, so that the workpiece in the fixture is located below the cutting mechanism; controlling the cutting mechanism to cut the workpiece; after cutting, controlling the cutting mechanism to drive a nozzle to move along the first direction toward the worktable; controlling the fixture to move along a second preset trajectory, so that the workpiece in the fixture is located within the spray range of the nozzle; and controlling an air jet pipe to spray air toward the workpiece to remove burrs from the surface of the workpiece.

[0090] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0091] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention 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; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A CNC machining system, characterized in that, include: A cutting device (100) includes: a worktable (110) and a clamp (120) and a cutting mechanism (130) disposed on the worktable (110); the cutting mechanism (130) is located above the clamp (120) and is movable along a first direction toward or away from the clamp (120); the first direction is perpendicular to the worktable (110). The deburring device (200) includes: a gas storage tank (201) storing high-pressure refrigerated gas, a control valve, and a nozzle. The nozzle is located on the cutting mechanism (130) and faces the fixture (120). The nozzle is connected to the outlet of the gas storage tank (201) through a jet pipe (202). The control valve is located between the outlet of the gas storage tank (201) and the outlet of the nozzle. A control device (300) is provided on the worktable (110), and the cutting mechanism (130) and the control valve are both electrically connected to the control device (300).

2. The CNC machining system according to claim 1, characterized in that, The deburring device (200) further includes a compressor (205), a condenser (206), a throttling device (207), and an evaporator (208). The outlet of the compressor (205), the condenser (206), the throttling device (207), the evaporator (208), and the inlet of the compressor (205) are connected in sequence. The evaporator (208) is arranged around the outer periphery of the gas storage tank (201).

3. The CNC machining system according to claim 2, characterized in that, The deburring device (200) further includes a first heat insulation component (209), which is disposed on the outer periphery of the evaporator (208).

4. The CNC machining system according to claim 2, characterized in that, The deburring device (200) further includes a second heat insulation component (210) and a main body (211). The gas storage tank (201), the compressor (205), the condenser (206), the throttling component (207), and the evaporator (208) are all located inside the main body (211). The condenser (206) is located above the evaporator (208). The second heat insulation component (210) is located between the evaporator (208) and the condenser (206).

5. The CNC machining system according to claim 2, characterized in that, The deburring device (200) further includes a drying filter (212), which is disposed between the throttling element (207) and the evaporator (208); And / or, the deburring device (200) further includes a radiator (213) disposed near the condenser (206).

6. The CNC machining system according to any one of claims 1 to 5, characterized in that, The deburring device (200) also includes a one-way valve (214), which is located at the inlet of the gas storage tank (201) and unidirectionally inputs high-pressure gas into the gas storage tank (201); And / or, the deburring device (200) further includes a pressure regulating valve (215) located between the outlet of the gas storage tank (201) and the outlet of the nozzle; And / or, the deburring device (200) further includes an insulated adapter pipe (216), which is provided at the inlet and / or outlet of the gas storage tank (201).

7. The CNC machining system according to any one of claims 1 to 5, characterized in that, The jet pipe (202) includes an insulation section (203) and a jet section (204). The inlet of the jet section (204) is connected to the outlet of the gas storage tank (201) through the insulation section (203). The jet section (204) is rotatably connected to the cutting mechanism (130). The nozzle is located at the outlet of the jet section (204).

8. The CNC machining system according to any one of claims 1 to 5, characterized in that, The cutting mechanism (130) includes a support frame (131), a spindle (132), a turret (133), a first drive member, and a second drive member. The support frame (131) is located on the worktable (110), and the spindle (132), the first drive member, and the second drive member are all located on the support frame (131). The spindle (132) extends along the first direction, the turret (133) is located at one end of the spindle (132) near the worktable (110), and the nozzle is located on the spindle (132); the first driving member and the second driving member are both connected to the spindle (132), the first driving member drives the spindle (132) to move back and forth along the first direction, and the second driving member drives the spindle (132) to rotate along its own axis; Both the first driving element and the second driving element are electrically connected to the control device (300).

9. The CNC machining system according to any one of claims 1 to 5, characterized in that, The cutting device (100) further includes a rotating component (140) disposed on the worktable (110), and a clamp (120) disposed on the rotating component (140). The rotating component (140) can move back and forth on the worktable (110) along a second direction and / or a third direction. The second direction and the third direction are perpendicular to each other and are both perpendicular to the first direction. And / or, the cutting device (100) further includes a third driving member disposed on the worktable (110), the rotating member (140) having a rotating shaft, the third driving member being connected to the rotating shaft, the third driving member driving the rotating member (140) to rotate around the rotating shaft in a preset direction, the preset direction including at least one of the first direction, the second direction and the third direction; the third driving member being electrically connected to the control device (300).

10. A CNC machining method, based on the CNC machining system as described in any one of claims 1 to 9, characterized in that, include: The control fixture moves along a first preset trajectory, and the control cutting mechanism moves along a first direction toward the worktable, so that the workpiece in the fixture is located below the cutting mechanism; Control the cutting mechanism to cut the workpiece; After the cutting is completed, the cutting mechanism is controlled to move the nozzle toward the worktable in the first direction, and the fixture is controlled to move along the second preset trajectory so that the workpiece in the fixture is within the spray range of the nozzle. Control the jet nozzle to spray air towards the workpiece to remove burrs from the workpiece surface.

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