Numerical control machining device

Abstract

The utility model belongs to the technical field of metal machining equipment, and provides a numerical control machining device which comprises a rack, a fixing assembly, a heat exchange assembly, a temperature sensor and a machining assembly, the rack is provided with a workbench, the fixing assembly is arranged on the workbench, and the surface, back to the workbench, of the fixing assembly is used for bearing a metal piece; the heat exchange assembly comprises a first refrigeration sheet, the first refrigeration sheet is arranged between the workbench and the fixing assembly, the first refrigeration sheet is provided with a first heat absorption surface and a first heat release surface which are oppositely arranged, the first heat release surface is in heat conduction connection with the workbench, and the first heat absorption surface is in heat conduction connection with the fixing assembly; the temperature sensor is used for detecting the temperature of the metal piece; the machining assembly is used for machining metal parts. According to the numerical control machining device, in the process of preparing the metal product through the metal piece, the temperature of the metal piece can be kept within the use temperature range of the metal product, and the metal product meeting the precision requirement can be rapidly machined.

Description

Technical Field

[0001] The present application relates to the technical field of metal processing equipment, and in particular to a CNC processing device. Background Art

[0002] In the related art, CNC machining devices can produce metal products with high dimensional accuracy by performing high-precision machining on metal parts. However, before machining the metal parts, if the metal parts are stored in a high-temperature environment, the initial temperature of the metal parts will be high; in addition, during the machining process, the metal parts will absorb the heat generated during the machining process and the temperature will rise. The above situation can easily cause the temperature of the metal parts during the machining process to exceed the use temperature range of the metal products. Metals have the property of thermal expansion and contraction, which will cause the size of the metal products obtained by machining the metal parts to fail to meet the accuracy requirements. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a CNC machining device to solve the technical problem in the prior art that the temperature of metal parts during machining deviates from the operating temperature range of the metal products, resulting in the size of the metal products failing to meet the precision requirements.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a CNC machining device, comprising:

[0005] Rack with workbench;

[0006] A fixing component is disposed on the workbench, and a surface of the fixing component facing away from the workbench is used to support the metal piece;

[0007] The heat exchange component comprises a first refrigeration fin, the first refrigeration fin is arranged between the workbench and the fixed component, the first refrigeration fin has a first heat absorbing surface and a first heat releasing surface arranged opposite to each other, the first heat releasing surface is thermally connected to the workbench, and the first heat absorbing surface is thermally connected to the fixed component;

[0008] A temperature sensor, used to detect the temperature of the metal part;

[0009] A processing assembly is used for processing the metal part.

[0010] In some embodiments, a heat insulating layer is provided between the workbench and the fixed component, the heat insulating layer is provided with a first through groove, the first through groove is used to accommodate the first cooling plate, and the thermal conductivity of the heat insulating layer is smaller than the thermal conductivity of the fixed component and the workbench.

[0011] In some embodiments, the heat exchange component also includes a second refrigeration fin, which is arranged between the workbench and the fixed component. The second refrigeration fin has a second heat absorption surface and a second heat release surface that are relatively arranged. The second heat absorption surface is thermally connected to the workbench, and the second heat release surface is thermally connected to the fixed component.

[0012] In some embodiments, the heat insulation layer is further provided with a second through groove, and the second through groove is used to accommodate the second cooling fin.

[0013] In some embodiments, a wiring groove is provided on the surface of the insulation layer facing the workbench and / or the surface facing away from the workbench, and the heat exchange assembly also includes an electrical connector, which is used to electrically connect the first refrigeration plate and the second refrigeration plate to an external power supply, and the electrical connector is passed through the wiring groove.

[0014] In some embodiments, the CNC machining device also includes a controller, which is electrically connected to the temperature sensor, the first refrigeration fin and the second refrigeration fin, respectively, and is configured to control the operation of the first refrigeration fin and the second refrigeration fin according to the temperature signal detected by the temperature sensor.

[0015] In some embodiments, a heat-conducting layer is disposed between the heat-insulating layer and the workbench, and the thermal conductivity of the heat-conducting layer is greater than the thermal conductivity of the heat-insulating layer.

[0016] In some embodiments, the heat-conducting layer, the heat-insulating layer and the fixing assembly are fixedly connected, and the heat-conducting layer is detachably connected to the workbench.

[0017] In some embodiments, the fixing assembly includes a shell and a vacuum generator. The shell is disposed on the workbench, an air flow channel is formed inside the shell, a suction port is provided on the surface of the shell facing away from the workbench, and an air inlet and an air outlet are provided on the side of the shell, and the air inlet and the air outlet are connected to the vacuum generator through pipelines respectively.

[0018] In some embodiments, two positioning ridges are protruded from the surface of the fixing component facing away from the workbench, the two positioning ridges are perpendicular to each other, and the two positioning ridges are arranged along the edge of the fixing component.

[0019] The beneficial effect of the CNC machining device provided by the present application is that: compared with the prior art, the CNC machining device provided by the present application adopts a fixed component to support the metal part, and a first cooling plate is arranged between the fixed component and the workbench. With such arrangement, before the metal part is used to prepare the metal product, if the temperature of the metal part is higher than the use temperature range of the metal product, the first cooling plate can be started first, so that the first cooling plate absorbs the heat of the fixed component and the metal part located on the fixed component through the first heat absorption surface, and releases the heat to the workbench through the first heat release surface; at the same time, the temperature of the metal part can be detected by the temperature sensor, and the first cooling plate can be stopped after the metal part is cooled to a temperature within the use temperature range of the metal product; then, the metal part is processed by the machining component; and, in the process of machining the metal part, if the temperature of the metal part is higher than the use temperature range of the metal product, the metal part can also be cooled by the first cooling plate, so that the temperature of the metal part is within the use temperature range of the metal product during the entire machining process, thereby improving the machining accuracy of the CNC machining device, so that the CNC machining device can quickly process metal products with dimensional accuracy that meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the structure of a numerical control machining device provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a fixing component, a heat exchange component, a heat insulating layer and a heat conducting layer of a CNC machining device provided in an embodiment of the present application;

[0023] Figure 3 for Figure 2 The schematic diagram of the local structure of the fixed component, heat exchange component, heat insulation layer and heat conduction layer of the numerical control processing device shown in the figure after being cut along the AA direction;

[0024] Figure 4 A schematic diagram of the exploded structure of a fixing component, a heat exchange component, a heat insulating layer and a heat conducting layer of a CNC machining device provided in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of the structure of a heat-conducting layer of a CNC machining device provided in an embodiment of the present application;

[0026] Figure 6A schematic structural diagram of another heat-conducting layer of a CNC machining device provided in an embodiment of the present application.

[0027] Among them, the reference numerals in the figure are:

[0028] 100- rack; 110- workbench;

[0029] 200-fixing component; 210-housing; 211-air flow channel; 212-air inlet; 213-air outlet; 214-adsorption port; 215-first through hole; 220-positioning convex strip;

[0030] 300-heat exchange component; 310-first cooling fin; 311-first heat absorption surface; 312-first heat release surface; 320-second cooling fin; 321-second heat absorption surface; 322-second heat release surface;

[0031] 400-processing components;

[0032] 500 - heat insulation layer; 510 - first through groove; 520 - second through groove; 530 - second through hole;

[0033] 600 - heat-conducting layer; 610 - heat-conducting layer body; 611 - first screw hole; 620 - fixing ear; 621 - third through hole; 700 - controller. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0038] In the related art, CNC machining devices can produce metal products with high dimensional accuracy by performing high-precision machining on metal parts. However, before machining the metal parts, if the metal parts are stored in a high-temperature environment, the initial temperature of the metal parts will be high; in addition, during the machining process, the metal parts will absorb the heat generated during the machining process and the temperature will rise. The above situation can easily cause the temperature of the metal parts during the machining process to exceed the use temperature range of the metal products. Metals have the property of thermal expansion and contraction, which will cause the size of the metal products obtained by machining the metal parts to fail to meet the accuracy requirements.

[0039] In order to solve the above problems, this application designs a CNC machining device, please refer to Figures 1 to 3 The CNC machining device includes a frame 100, a fixing assembly 200, a heat exchange assembly 300, a temperature sensor (not shown in the figure, the same below) and a machining assembly 400. Figure 1 The frame 100 is provided with a workbench 110; the fixing assembly 200 is arranged on the workbench 110, and the surface of the fixing assembly 200 facing away from the workbench 110 is used to support the metal parts. Figure 1 and Figure 3 The heat exchange component 300 includes a first refrigeration fin 310, which is arranged between the workbench 110 and the fixed component 200. The first refrigeration fin 310 has a first heat absorbing surface 311 and a first heat releasing surface 312 which are arranged opposite to each other. The first heat releasing surface 312 is thermally connected to the workbench 110, and the first heat absorbing surface 311 is thermally connected to the fixed component 200; the temperature sensor is used to detect the temperature of the metal part; the processing component 400 is used to process the metal part.

[0040] Among them, the fixing component 200 can be directly set on the workbench 110, or it can be indirectly set on the workbench 110 through the heat-conducting layer 600 described below, and it can also be indirectly set on the workbench 110 through a buffer structure. The fixing component 200 has a variety of different implementations. In one implementation, the fixing component 200 may include a fixing plate and a clamping structure, the fixing plate is fixed on the workbench 110 and used to support metal parts, and the clamping structure is set on the fixing plate and used to clamp and fix the metal parts. In another implementation, the fixing component 200 may include a fixing plate and a magnetic structure, the fixing plate is fixed on the workbench 110 and used to support metal parts, the magnetic structure is fixed on the fixing plate and used to magnetically fix metal parts, and the specific structure of the fixing component 200 can be set as needed, and this embodiment is not the only limitation.

[0041] The first cooling fin 310 is a Peltier cooler based on the Peltier effect. When the first cooling fin 310 is powered on, the first heat absorbing surface 311 of the first cooling fin 310 can absorb the heat of the fixed component 200 and the metal parts on the fixed component 200, and transfer the heat to the first heat releasing surface 312. The first heat releasing surface 312 then conducts the heat to the workbench 110, and further conducts the heat of the metal parts to the workbench 110, thereby cooling the metal parts. The number of first cooling fins 310 can be one or more. When the number of first cooling fins 310 is multiple, the multiple first cooling fins 310 can be evenly or unevenly arranged between the fixed component 200 and the workbench 110. For example, the multiple first cooling fins 310 can be arranged in a circular ring shape; for another example, refer to Figure 4 , the plurality of first cooling fins 310 may be arranged in a rectangular ring.

[0042] The temperature sensor can be set as a contact temperature sensor, which can be directly set on the surface of the fixed component 200 facing away from the workbench 110, and detect the temperature of the metal part by direct contact with the metal part; the temperature sensor can also be set as a non-contact temperature sensor, which can be set on the frame 100 of the CNC machining device, and determine the temperature of the metal part by measuring the infrared radiation emitted by the metal part.

[0043] The processing assembly 400 is used to process metal parts. The processing assembly 400 can be set on the frame 100 of the CNC processing device and can perform processing operations such as turning, grinding, drilling or cutting on the metal parts.

[0044] The numerical control processing device provided in this embodiment adopts a fixing component 200 to support the metal part, and a first cooling plate 310 is arranged between the fixing component 200 and the workbench 110. In this arrangement, before the metal part is used to prepare the metal product, if the temperature of the metal part is higher than the use temperature range of the metal product, the first cooling plate 310 can be started first, so that the first cooling plate 310 absorbs the heat of the fixing component 200 and the metal part located on the fixing component 200 through the first heat absorbing surface 311, and releases the heat to the workbench 110 through the first heat releasing surface 312; at the same time, the temperature sensor can be used to measure the temperature of the metal part. The temperature of the metal part is detected, and the first cooling plate 310 stops working after the metal part is cooled to a temperature within the operating temperature range of the metal product; then, the processing component 400 processes the metal part; and in the process of processing the metal part, if the temperature of the metal part is higher than the operating temperature range of the metal product, the first cooling plate 310 can also be used to cool the metal part, so that the temperature of the metal part is within the operating temperature range of the metal product throughout the entire processing process, thereby improving the processing accuracy of the CNC processing device, so that the CNC processing device can process metal products with dimensional accuracy that meets the requirements.

[0045] See also Figure 1 and Figure 4 In some embodiments, a heat insulating layer 500 is further provided between the workbench 110 and the fixed component 200 . The heat insulating layer 500 is provided with a first through groove 510 . The first through groove 510 is used to accommodate the first cooling plate 310 . The thermal conductivity of the heat insulating layer 500 is smaller than the thermal conductivity of the fixed component 200 and the workbench 110 .

[0046] Specifically, the heat insulation layer 500 can be made of materials such as phenol formaldehyde plastic (PF) and epoxy resin.

[0047] Specifically, the number of the first through slots 510 is the same as the number of the first cooling fins 310 . When the number of the first through slots 510 and the number of the first cooling fins 310 are both plural, one first cooling fin 310 is embedded in each first through slot 510 .

[0048] The CNC machining device provided in this embodiment is provided with an insulating layer 500 between the fixed component 200 and the workbench 110, and the first cooling plate 310 is embedded in the first through groove 510 on the insulating layer 500. With such a configuration, the heat of the fixed component 200 can be quickly conducted to the workbench 110 via the first cooling plate 310, and the insulating layer 500 can isolate the fixed component 200 and the workbench 110, thereby minimizing the heat released to the workbench 110 via the first cooling plate 310 from being re-conducted back to the fixed component 200, thereby improving the efficiency of cooling metal parts.

[0049] See also Figure 3 and Figure 4 In some embodiments, the heat exchange component 300 also includes a second refrigeration fin 320, which is arranged between the workbench 110 and the fixed component 200. The second refrigeration fin 320 has a second heat absorbing surface 321 and a second heat releasing surface 322 that are arranged opposite to each other. The second heat absorbing surface 321 is thermally connected to the workbench 110, and the second heat releasing surface 322 is thermally connected to the fixed component 200.

[0050] The second cooling fin 320 is also a Peltier cooler based on the Peltier effect. When the second cooling fin 320 is powered on, the second heat absorption surface 321 of the second cooling fin 320 can absorb the heat of the workbench 110 and transfer the heat to the second heat release surface 322. The second heat release surface 322 then conducts the heat to the fixed component 200 and the metal parts located on the fixed component 200, thereby heating the metal parts.

[0051] The number of the second cooling fins 320 can be one or more. When the number of the second cooling fins 320 is multiple, the multiple second cooling fins 320 can be evenly or unevenly arranged between the fixing assembly 200 and the workbench 110. For example, the multiple second cooling fins 320 can be arranged in a ring shape. For another example, see Figure 4 The plurality of second cooling fins 320 may be arranged in a rectangular ring, and when the heat exchange assembly 300 includes both the plurality of first cooling fins 310 and the plurality of second cooling fins 320 , the plurality of second cooling fins 320 may surround the outer sides of the plurality of first cooling fins 310 .

[0052] Generally, since the storage environment temperature of metal parts is relatively low, the initial temperature of the metal parts may also be lower than the operating temperature range of metal products. Therefore, before using metal parts to prepare metal products, if the temperature of the metal parts is lower than the operating temperature range of metal products, the second cooling plate 320 can be started to allow the second heat absorption surface 321 of the second cooling plate 320 to absorb heat from the workbench 110, and conduct the heat to the fixing component 200 and the metal parts located on the fixing component 200 through the second heat release surface 322 to heat the metal parts. When the temperature of the metal parts rises to the operating temperature range of the metal products, the second cooling plate 320 can be stopped, and then the metal parts can be processed by the processing component 400, thereby improving the processing accuracy of the CNC processing device.

[0053] In some embodiments, the heat insulating layer 500 is further provided with a second through groove 520 , and the second through groove 520 is used to accommodate the second cooling fin 320 .

[0054] Specifically, the number of the second through slots 520 is the same as the number of the second cooling fins 320 . When the number of the second through slots 520 and the number of the second cooling fins 320 are both plural, one second cooling fin 320 is embedded in each second through slot 520 .

[0055] The CNC machining device provided in this embodiment embeds the second refrigeration plate 320 in the second through groove 520 on the insulation layer 500. The heat of the workbench 110 can be quickly conducted to the fixed component 200 through the second refrigeration plate 320, and the insulation layer 500 can isolate the fixed component 200 and the workbench 110, thereby minimizing the heat released to the fixed component 200 through the second refrigeration plate 320 from being re-conducted back to the workbench 110, thereby improving the efficiency of heating metal parts.

[0056] In some embodiments, a wiring groove (not shown in the figure, the same below) is provided on the surface of the insulation layer 500 facing the workbench 110 and / or the surface facing away from the workbench 110. The heat exchange assembly 300 also includes an electrical connector (not shown in the figure, the same below). The electrical connector is used to electrically connect the first cooling fin 310 and the second cooling fin 320 to an external power supply, and the electrical connector is passed through the wiring groove.

[0057] Specifically, the electrical connector includes a positive line and a negative line of the first cooling fin 310, a positive line and a negative line of the second cooling fin 320, a positive bus line connecting the positive line of the first cooling fin 310 and the positive line of the second cooling fin 320 to an external power source, and a negative bus line connecting the negative line of the first cooling fin 310 and the negative line of the second cooling fin 320 to an external power source.

[0058] The CNC machining device provided in this embodiment embeds the electrical connector in the wiring groove, which can make the wiring of the electrical connector neater and avoid interference of the electrical connector with the machining process. The wiring groove can also protect the electrical connector.

[0059] See also Figure 1 In some embodiments, the CNC machining device further includes a controller 700, which is electrically connected to the temperature sensor, the first cooling plate 310 and the second cooling plate 320, respectively, and is configured to control the operation of the first cooling plate 310 and the second cooling plate 320 according to the temperature signal detected by the temperature sensor.

[0060] The CNC machining device provided in this embodiment can control the first cooling plate 310 to work through the controller 700 when the temperature sensor detects that the temperature of the metal part is higher than the operating temperature range of the metal product. When the temperature sensor detects that the temperature of the metal part is lower than the operating temperature range of the metal product, the second cooling plate 320 can be controlled by the controller 700. This ensures that the temperature of the metal part is always within the operating temperature range of the metal product during the machining process, thereby improving the machining accuracy of the CNC machining device.

[0061] See also Figures 2 to 4 In some embodiments, a heat-conducting layer 600 is disposed between the heat-insulating layer 500 and the workbench 110 , and the thermal conductivity of the heat-conducting layer 600 is greater than the thermal conductivity of the heat-insulating layer 500 .

[0062] Specifically, the heat-conducting layer 600 can be set as a metal plate such as an aluminum plate, a stainless steel plate, etc. Of course, the heat-conducting layer 600 can also be made of other materials with higher thermal conductivity.

[0063] The CNC machining device provided in this embodiment further has a heat-conducting layer 600 between the heat-insulating layer 500 and the workbench 110. The heat-conducting layer 600 can improve the heat exchange efficiency between the heat exchange component 300 and the workbench 110. Moreover, the heat-conducting layer 600 can protect the heat exchange component 300, thereby isolating the heat exchange component 300 from impurities such as cutting fluid and metal chips that may be generated during the machining process, thereby protecting the heat exchange component 300.

[0064] See also Figure 4 In some embodiments, the heat-conducting layer 600 , the heat-insulating layer 500 and the fixing assembly 200 are fixedly connected, and the heat-conducting layer 600 is detachably connected to the workbench 110 .

[0065] Specifically, see Figure 4 The heat-conducting layer 600 may be provided with a first screw hole 611, the fixing component 200 may be provided with a first through hole 215, and the heat-insulating layer 500 may be provided with a second through hole 530. After the bolt passes through the first through hole 215 on the fixing component 200 and the second through hole 530 on the heat-insulating layer 500, it is threadedly connected with the first screw hole 611 on the heat-conducting layer 600, so that the heat-conducting layer 600, the fixing component 200 and the heat-insulating layer 500 can be fixedly connected as a whole.

[0066] Specifically, see Figure 4The heat-conducting layer 600 may include a heat-conducting layer body 610 and a fixing ear 620. The heat-conducting layer body 610 is arranged between the workbench 110 and the heat-insulating layer 500. The heat-conducting layer body 610 is provided with a first screw hole 611. The fixing ear 620 is protruded from the side wall of the heat-conducting layer body 610, and the fixing ear 620 protrudes from the outer wall of the heat-insulating layer 500. The fixing ear 620 is provided with a third through hole 621. A bolt is used to penetrate the third through hole 621 on the fixing ear 620 and then be threadedly connected with the second screw hole (not shown) on the workbench 110, so that the heat-conducting layer 600 can be fixed on the workbench 110.

[0067] In some embodiments, the fixing ears 620 are arranged in an axisymmetric manner. The number of the fixing ears 620 can be one pair or more pairs, preferably one pair of fixing ears 620 or two pairs of fixing ears 620. This is not intended to limit the present application. For example, see Figure 4 The number of the fixing ears 620 is two pairs, the shape of the projection of the heat-conducting layer body 610 on the workbench 110 is a rectangle, the heat-conducting layer body 610 has a first symmetry axis O1 and a second symmetry axis O2, wherein the first symmetry axis O1 is parallel to the short side of the heat-conducting layer body 610, and the second symmetry axis O2 is parallel to the long side of the heat-conducting layer body 610, and the four fixing ears 620 are respectively protruded on the four side walls of the heat-conducting layer body 610, and the two fixing ears 620 arranged on the two short sides of the heat-conducting layer body 610 are axisymmetric about the first symmetry axis O1, and the two fixing ears 620 arranged on the two long sides of the heat-conducting layer body 610 are axisymmetric about the second symmetry axis O2. Such an arrangement can fix the heat-conducting layer 600 on the workbench 110 more stably, and can also achieve the effect of uniform force, which can reduce the risk of warping and deformation of the heat-conducting layer 600, and is conducive to ensuring the processing accuracy of the CNC machining device.

[0068] In some embodiments, the fixing ears 620 are arranged in a centrally symmetrical manner, and the number of the fixing ears 620 can be one pair or more pairs, preferably two pairs of fixing ears 620 or four pairs of fixing ears 620, which is not intended to limit the present application. Figure 5The number of the fixing ears 620 is two pairs, the shape of the projection of the heat-conducting layer body 610 on the workbench 110 is a rectangle, the heat-conducting layer body 610 has a first symmetry axis O1 and a second symmetry axis O2, wherein the first symmetry axis O1 is parallel to the short side of the heat-conducting layer body 610, the second symmetry axis O2 is parallel to the long side of the heat-conducting layer body 610, and the intersection of the first symmetry axis O1 and the second symmetry axis O2 is the geometric center O of the heat-conducting layer body 610. The four fixing ears 620 are respectively protruded on the four side walls of the heat-conducting layer body 610, and the two fixing ears 620 arranged on the long side of the heat-conducting layer body 610 are centrosymmetric about the geometric center O, and the two fixing ears 620 arranged on the short side of the heat-conducting layer body 610 are centrosymmetric about the geometric center O. In some cases, the distance H1 between the fixing ear 620 located on the long side of the heat-conducting layer body 610 and the first symmetry axis O1 can be set to be equal to the distance H2 between the fixing ear 620 located on the short side of the heat-conducting layer body 610 and the second symmetry axis O2. Such a setting can more stably fix the heat-conducting layer 600 on the workbench 110, and when the length-width ratio of the heat-conducting layer body 610 is large, the stress on the heat-conducting layer 600 can be better improved, thereby reducing the risk of warping and deformation of the heat-conducting layer 600, which is beneficial to ensuring the processing accuracy of the CNC machining device.

[0069] For another example, see Figure 6, the number of the fixing ears 620 is four pairs, the shape of the projection of the heat-conducting layer body 610 on the workbench 110 is a rectangle, the heat-conducting layer body 610 has a first symmetry axis O1 and a second symmetry axis O2, wherein the first symmetry axis O1 is parallel to the short side of the heat-conducting layer body 610, the second symmetry axis O2 is parallel to the long side of the heat-conducting layer body 610, and the intersection of the first symmetry axis O1 and the second symmetry axis O2 is the geometric center O of the heat-conducting layer body 610. Two fixing ears 620 are provided on each side of the heat-conducting layer body 610, the two fixing ears 620 located on one of the short sides of the heat-conducting layer body 610 and the two fixing ears 620 located on the other short side of the heat-conducting layer body 610 are centrosymmetric about the geometric center O of the heat-conducting layer body 610; the two fixing ears 620 located on one of the long sides of the heat-conducting layer body 610 and the two fixing ears 620 located on the other long side of the heat-conducting layer body 610 are centrosymmetric about the geometric center O of the heat-conducting layer body 610. Moreover, for two fixing ears 620 adjacent to the same angle of the heat-conducting layer body 610, the fixing ears 620 located on the short side of the heat-conducting layer body 610 are arranged closer to the vertex of the angle than the fixing ears 620 located on the long side of the heat-conducting layer body 610. Of course, the shape of the projection of the heat-conducting layer body 610 on the workbench 110 can also be a square. In this case, the two fixing ears 620 arranged near the same angle of the heat-conducting layer body 610 are at the same distance from the vertex of the angle. Through the above four pairs of fixing ears 620, the stress of the heat-conducting layer 600 can be better improved when the length-width ratio of the heat-conducting layer body 610 is large, thereby reducing the risk of warping and deformation of the heat-conducting layer 600, which is conducive to ensuring the processing accuracy of the CNC machining device.

[0070] In some embodiments, there are multiple fixing ears 620, some of which are arranged axially symmetrically about the symmetry axis of the heat-conducting layer body 610 or centrosymmetrically about the geometric center of the heat-conducting layer body 610, and other parts of the fixing ears 620 are neither arranged axially symmetrically about the symmetry axis of the heat-conducting layer body 610 nor centrosymmetrically about the geometric center of the heat-conducting layer body 610. When the fixing ears 620 are arranged in the above manner, on the one hand, the heat-conducting layer 600 can be stably fixed on the workbench 110, and on the other hand, other structures of the CNC machining device can be avoided when necessary, so that the machining operation can be carried out smoothly.

[0071] In some other embodiments, all the fixing ears 620 may be neither arranged axially symmetrically about the symmetry axis of the heat-conducting layer body 610 nor centrosymmetrically about the geometric center of the heat-conducting layer body 610 , and may be arranged as needed, which is not the only limitation in this embodiment.

[0072] In the CNC machining device provided in this embodiment, after the heat conducting layer 600, the heat insulating layer 500 and the fixing assembly 200 are connected into a module, the module can be assembled and disassembled from the workbench 110 as a whole, which is beneficial to improving the installation and maintenance efficiency of the CNC machining device.

[0073] In some embodiments, the fixing assembly 200 includes a shell 210 and a vacuum generator (not shown in the figure, the same below), the shell 210 is arranged on the workbench 110, an air flow channel 211 is formed inside the shell 210, a suction port 214 is provided on the surface of the shell 210 facing away from the workbench 110, and an air inlet 212 and an air outlet 213 are provided on the side of the shell 210, and the air inlet 212 and the air outlet 213 are respectively connected to the vacuum generator through pipelines.

[0074] The CNC machining device provided in this embodiment places the metal part at the suction port 214, and sucks the gas in the air flow channel 211 through the vacuum generator to adsorb and fix the metal part. The air flow is injected into the air flow channel 211 through the vacuum generator to loosen the metal part. The metal part is fixed by adsorption, and the metal part can be fixed relatively stably, thereby minimizing the workpiece deviation caused by the resonance generated by high-speed machining, and can realize rapid clamping of the metal part.

[0075] See also Figure 3 and Figure 4 In some embodiments, two positioning ridges 220 are protruded from the surface of the fixing component 200 facing away from the workbench 110 . The two positioning ridges 220 are perpendicular to each other and are arranged along the edge of the fixing component 200 .

[0076] The numerical control processing device provided in this embodiment can quickly position the metal part by fitting the two positioning convex strips 220 of the metal part together, which is helpful for quickly finding the zero point position of the metal part and simplifies the processing formula of the metal part.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A numerical control machining device, characterized in that: The numerical control processing device comprises: Rack with workbench; A fixing component is disposed on the workbench, and a surface of the fixing component facing away from the workbench is used to support the metal piece; The heat exchange component comprises a first refrigeration fin, the first refrigeration fin is arranged between the workbench and the fixed component, the first refrigeration fin has a first heat absorbing surface and a first heat releasing surface arranged opposite to each other, the first heat releasing surface is thermally connected to the workbench, and the first heat absorbing surface is thermally connected to the fixed component; A temperature sensor, used to detect the temperature of the metal part; A processing assembly is used for processing the metal part.

2. The numerical control machining device according to claim 1, characterized in that: A heat insulating layer is further provided between the workbench and the fixed component. The heat insulating layer is provided with a first through groove. The first through groove is used to accommodate the first refrigeration plate. The thermal conductivity of the heat insulating layer is smaller than the thermal conductivity of the fixed component and the workbench.

3. The numerical control machining device according to claim 2, characterized in that: The heat exchange component also includes a second refrigeration fin, which is arranged between the workbench and the fixed component. The second refrigeration fin has a second heat absorbing surface and a second heat releasing surface arranged opposite to each other. The second heat absorbing surface is thermally connected to the workbench, and the second heat releasing surface is thermally connected to the fixed component.

4. The numerical control machining device according to claim 3, characterized in that: The heat insulation layer is further provided with a second through groove, and the second through groove is used to accommodate the second refrigeration fin.

5. The numerical control machining device according to claim 3, characterized in that: The surface of the insulation layer facing the workbench and / or the surface facing away from the workbench is provided with a wiring groove, and the heat exchange assembly also includes an electrical connector, which is used to electrically connect the first refrigeration fin and the second refrigeration fin to an external power supply, and the electrical connector is passed through the wiring groove.

6. The numerical control machining device according to claim 3, characterized in that: The numerical control machining device further includes a controller, which is electrically connected to the temperature sensor, the first cooling fin, and the second cooling fin, respectively, and is configured to control the operation of the first cooling fin and the second cooling fin according to a temperature signal detected by the temperature sensor.

7. The numerical control machining device according to claim 2, characterized in that: A heat-conducting layer is arranged between the heat-insulating layer and the workbench, and the thermal conductivity of the heat-conducting layer is greater than the thermal conductivity of the heat-insulating layer.

8. The numerical control machining device according to claim 7, characterized in that: The heat-conducting layer, the heat-insulating layer and the fixing assembly are fixedly connected, and the heat-conducting layer is detachably connected to the workbench.

9. The numerical control machining device according to any one of claims 1 to 8, characterized in that: The fixing assembly includes a shell and a vacuum generator. The shell is arranged on the workbench. An air flow channel is formed inside the shell. A suction port is arranged on the surface of the shell facing away from the workbench. An air inlet and an air outlet are arranged on the side of the shell. The air inlet and the air outlet are connected to the vacuum generator through pipelines respectively.

10. The numerical control machining device according to any one of claims 1 to 8, characterized in that: Two positioning convex strips are protruded from the surface of the fixing component facing away from the workbench. The two positioning convex strips are perpendicular to each other and are arranged along the edge of the fixing component.

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