Freezing detection device, CNC processing equipment, freezing detection method and CNC processing method

Abstract

The present invention relates to a freezing detection device, comprising: a moving mechanism, a probe connected to the moving mechanism, and a thermal spray head connected to the moving mechanism. The probe is provided with a probe; the thermal spray head is located at one side of the probe and moves synchronously with the probe; the thermal spray head is arranged toward the probe. When the freezing detection device is working, the moving mechanism drives the probe and the thermal spray head to move to the detection point of the product, and the thermal spray head located at one side of the probe sprays hot air or hot water to the detection point of the product, so that the frost layer or ice cube covering the detection point of the product melts, so that the probe on the probe can accurately contact the detection point of the product, thereby obtaining the actual data of the product, improving the detection accuracy of the probe and the processing accuracy of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of CNC processing, and in particular to a freezing detection device, a CNC processing equipment, a freezing detection method, and a CNC processing method. Background Art

[0002] In CNC machining, the product to be processed needs to be fixed by a positioning fixture before the operation can be carried out. If the positioning of the product is not accurate, the product will easily shake and shift due to the force applied by the tool during the CNC machining process. There are many types of traditional positioning fixtures, mainly: clamping type, vacuum adsorption type, and electromagnetic adsorption type. However, for some workpieces with complex contours, such as forging materials, die-casting materials, etc., the contour of such products is poor and they are easily deformed by pressure. It is difficult for traditional positioning fixtures to accurately position the products. In order to solve the problem of difficult product positioning, technicians have developed a frozen positioning fixture. The principle of the frozen positioning fixture is to immerse the product in a liquid, and then freeze the liquid by cooling it down so that the product is fixed.

[0003] However, the disadvantage of the frozen positioning fixture is that the surface of the product will frost due to the low temperature or be attached with ice due to the liquid. During CNC processing, it is necessary to use a probe to detect the outer contour of the product to obtain the actual coordinate parameters of the product processing. The frost or ice on the surface of the product will cause the probe to be unable to detect the actual data of the product, reducing the detection accuracy of the probe and the processing accuracy of the product. Summary of the invention

[0004] Based on this, the present invention provides a freezing detection device, in which a moving mechanism drives the probe and the thermal nozzle to move to the detection point of the product, and the thermal nozzle located on one side of the probe sprays hot air or hot water to the detection point of the product, so that the frost layer or ice covering the detection point of the product melts, so that the probe on the probe can accurately contact the detection point of the product, thereby obtaining the actual data of the product and improving the detection accuracy of the probe and the processing accuracy of the product.

[0005] A freezing detection device, comprising:

[0006] Mobile mechanism;

[0007] A probe connected to the moving mechanism; the probe is provided with a probe; and

[0008] A thermal spray head connected to the moving mechanism; the thermal spray head is located at one side of the probe and moves synchronously with the probe; the thermal spray head is arranged toward the probe.

[0009] When the above-mentioned freezing detection device is working, the moving mechanism drives the probe and the thermal nozzle to move to the detection point of the product, and the thermal nozzle located on one side of the probe sprays hot air or hot water to the detection point of the product, so that the frost layer or ice covering the detection point of the product melts, so that the probe on the probe can accurately contact the detection point of the product, thereby obtaining the actual data of the product, improving the detection accuracy of the probe and the processing accuracy of the product.

[0010] In one embodiment, the freezing detection device further comprises: a hot air generator connected to the hot spray head, wherein hot air is generated by the hot air generator and transported to the hot spray head to melt the frost layer or ice.

[0011] In one embodiment, the freezing detection device further comprises: a hot water generator connected to a hot spray head; the hot spray head is provided with an atomizer. The hot water generator generates hot water, and the atomizer on the hot spray head atomizes the hot water and sprays it on the product to melt the frost layer or ice.

[0012] In one embodiment, the thermal spray head is hinged to the moving mechanism. The hinged connection can facilitate the adjustment of the direction of the thermal spray head to accommodate probes of different shapes and lengths.

[0013] In one embodiment, the thermal spray head and the probe form an angle of 30° to 80°. The angle between the thermal spray head and the probe can be adjusted between 30° and 80° as needed.

[0014] In one embodiment, the hot spray head is provided with a flow regulating valve, through which the rate of hot air or hot water spraying can be adjusted, and the amount of hot air or hot water sprayed can be controlled within a preset range to avoid large-scale melting of ice.

[0015] The invention also provides a CNC processing device.

[0016] A CNC processing equipment, comprising: the freezing detection device of any of the above embodiments, further comprising:

[0017] CNC processing machine; the CNC processing machine is equipped with processing tools; the moving mechanism is installed on the CNC processing machine;

[0018] A first freezing positioning fixture installed on a CNC processing machine; the first freezing positioning fixture comprises: a first heat exchange component and a first positioning plate detachably connected to the first heat exchange component; the first heat exchange component has a cooling function and a heating function; the first positioning plate is provided with a receiving groove for accommodating a product; and

[0019] A second freezing positioning fixture is installed outside the CNC processing machine; the second freezing positioning fixture includes: a second heat exchange component and a second positioning plate detachably connected to the second heat exchange component; the second heat exchange component has a refrigeration function; the second positioning plate has the same structure as the first positioning plate.

[0020] In the above CNC processing equipment, the first freezing positioning fixture is installed on the CNC processing machine to freeze and fix the current product to be processed. The second freezing positioning fixture is installed outside the CNC processing machine to pre-cool the next product to be processed. During operation, the processing tool on the CNC processing machine performs CNC processing on the frozen and fixed current product to be processed. In addition, during the CNC processing process, the probe and the hot nozzle are moved to the detection point of the current product to be processed through the moving mechanism of the freezing detection device, and the frost layer or ice cube covering the detection point of the current product to be processed is melted by the hot air or hot water sprayed by the hot nozzle, so that the probe can contact the surface of the product, thereby obtaining the actual coordinate parameters of the detection point of the product. When the current product to be processed is about to be completed by CNC processing, the first positioning plate is heated by the first heat exchange component to melt the ice cube in advance. When the CNC processing of the current product to be processed is completed, the processed product together with the first positioning plate is removed from the first heat exchange component and moved outside the CNC processing machine, and then the next product to be processed together with the second positioning plate is removed from the second heat exchange component and installed on the first heat exchange component for freezing and fixing. The processed product is removed from the first positioning plate and replaced with the next product to be processed, and then installed on the second heat exchange assembly for pre-cooling. Through the above design, the frozen fixation of the current product to be processed is achieved, and the accuracy of product positioning is improved. In addition, the next product to be processed is pre-cooled before processing. When the processing of the previous product is completed, it can be quickly frozen by exchanging the positioning plate, thereby improving the efficiency of freezing. In addition, during the CNC processing process, the hot nozzle is used to spray hot air or hot water to melt the frost layer or ice at the detection point of the product, so that the probe can accurately detect the actual coordinate value of the detection point of the product, thereby improving the detection accuracy of the probe and the processing accuracy of the product.

[0021] The invention also provides a freezing detection method.

[0022] A freezing detection method comprises the steps of:

[0023] Connect the thermal nozzle to the heat source;

[0024] The moving mechanism drives the probe and the thermal nozzle to move synchronously to the detection point of the product;

[0025] Before the probe on the probe contacts the detection point of the product, the hot air or hot water sprayed by the hot nozzle heats the local surface of the product, so that the frost or ice covering the detection point of the product melts;

[0026] The probe contacts the probing point of the product to measure coordinate parameters of the probing point of the product.

[0027] In the above-mentioned freezing detection method, the moving mechanism drives the probe and the thermal nozzle to move to the detection point of the product, and the thermal nozzle located on one side of the probe sprays hot air or hot water to the detection point of the product, so that the frost layer or ice covering the detection point of the product melts, so that the probe on the probe can accurately contact the detection point of the product, thereby obtaining the actual data of the product, improving the detection accuracy of the probe and the processing accuracy of the product.

[0028] The invention also provides a CNC processing method.

[0029] The first freezing positioning fixture is set on the CNC processing machine, and the second freezing positioning fixture is set outside the CNC processing machine; the freezing detection device is installed on the CNC processing machine, and the thermal nozzle is connected to the heat source;

[0030] The product to be processed is placed on the first frozen positioning fixture; the first heat exchange component is refrigerated so that the positioning liquid on the first positioning plate reaches the freezing temperature, and the product to be processed is frozen and fixed by the positioning liquid; the next product to be processed is placed on the second frozen positioning fixture; the second heat exchange component is refrigerated so that the positioning liquid on the second positioning plate reaches the pre-cooling temperature, and the next product to be processed is fixed by the nearly frozen positioning liquid; the pre-cooling temperature is greater than the freezing temperature;

[0031] The tool of the CNC processing machine processes the product to be processed on the first freezing positioning fixture; during the CNC processing, the detection point of the product to be processed is detected; the moving mechanism drives the probe and the thermal nozzle to move synchronously to the detection point of the product to be processed; before the probe on the probe contacts the detection point of the product to be processed, the thermal nozzle sprays hot air or hot water to heat the local surface of the product to be processed, so that the frost layer or ice covering the detection point of the product to be processed melts; the probe contacts the detection point of the product to be processed to measure the coordinate parameters of the detection point of the product to be processed;

[0032] When the product to be processed is about to be finished, the first heat exchange component stops refrigeration and starts heating the first positioning plate, so that when the product to be processed is finished, the frozen positioning liquid enters a semi-melted state;

[0033] The currently processed product together with the first positioning plate is removed from the first heat exchange component and moved out of the CNC processing machine; the next product to be processed together with the second positioning plate is removed from the second heat exchange component and moved into the processing table to be installed on the first heat exchange component, and the first heat exchange component is refrigerated so that the positioning liquid on the second positioning plate reaches the freezing temperature;

[0034] After the currently processed product is removed from the first positioning plate, the next product to be processed is installed on the second heat exchange component together with the first positioning plate, and the second heat exchange component is refrigerated so that the positioning liquid on the first positioning plate reaches the pre-cooling temperature.

[0035] In the above CNC processing method, the processing tool on the CNC processing machine performs CNC processing on the frozen and fixed current product to be processed. In addition, during the CNC processing process, the probe and the hot nozzle are moved to the detection point of the current product to be processed through the moving mechanism of the freezing detection device, and the frost layer or ice cubes covering the detection point of the current product to be processed are melted by the hot air or hot water sprayed by the hot nozzle, so that the probe can contact the surface of the product, thereby obtaining the actual coordinate parameters of the detection point of the product. When the current product to be processed is about to be completed by CNC processing, the first positioning plate is heated by the first heat exchange component to melt the ice cubes in advance. When the CNC processing of the current product to be processed is completed, the processed product together with the first positioning plate is removed from the first heat exchange component and moved outside the CNC processing machine, and then the next product to be processed together with the second positioning plate is removed from the second heat exchange component and installed on the first heat exchange component for freezing and fixing. The processed product is removed from the first positioning plate and replaced with the next product to be processed, and then installed on the second heat exchange component for precooling. Through the above design, the current product to be processed can be frozen and fixed, and the accuracy of product positioning can be improved. In addition, the next product to be processed can be pre-cooled before processing. When the previous product is processed, it can be quickly frozen by exchanging the positioning plate, thereby improving the efficiency of freezing. In addition, during the CNC processing process, the hot nozzle is used to spray hot air or hot water to melt the frost or ice at the detection point of the product, so that the probe can accurately detect the actual coordinate value of the detection point of the product, thereby improving the detection accuracy of the probe and the processing accuracy of the product.

[0036] In one embodiment, the precooling temperature is -6°C to 0°C. Setting the precooling temperature to -6°C to 0°C can not only precool the next product to be processed in advance, but also prevent the second freezing plate from being difficult to separate from the second positioning plate and the first positioning plate due to the precooling temperature being too low. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a freezing detection device according to an embodiment of the present invention;

[0038] Figure 2 for Figure 1 The schematic diagram of the working state of the freezing detection device shown;

[0039] Figure 3 A schematic diagram of a CNC processing device according to an embodiment of the present invention;

[0040] Figure 4 for Figure 3 An exploded schematic diagram of a first freezing positioning fixture in a CNC processing device shown;

[0041] Figure 5 for Figure 3 An exploded schematic diagram of another embodiment of the first freezing positioning fixture is shown;

[0042] Figure 6 for Figure 3 An exploded schematic diagram of yet another embodiment of the first freezing positioning fixture is shown;

[0043] Figure 7 A flowchart of a freezing detection method according to an embodiment of the present invention;

[0044] Figure 8 The present invention is a flowchart of a CNC machining method according to an embodiment of the present invention.

[0045] The meanings of the symbols in the accompanying drawings are:

[0046] 100-CNC processing equipment;

[0047] 10-freezing detection device, 11-moving mechanism, 12-probe, 121-probe, 13-thermal nozzle, 14-hot water generator;

[0048] 20-CNC processing machine, 21-processing tool;

[0049] 30-first freezing positioning fixture, 31-first heat exchange assembly, 311-first heat exchange base, 3111-heating plate, 31111-first heating channel, 3112-heating plate, 31121-first heat dissipation channel, 312-first refrigeration plate, 313-first freezing plate, 3131-first cooling channel, 314-heater, 32-first positioning plate;

[0050] 40 - second freezing positioning fixture, 41 - second heat exchange component, 42 - second positioning plate;

[0051] (200, 200a, 200b)-product. DETAILED DESCRIPTION

[0052] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0053] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0055] like Figure 1 and Figure 2 As shown, it is a freezing detection device 10 provided by an embodiment of the present invention.

[0056] like Figure 1 As shown, the freezing detection device 10 includes: a moving mechanism 11, a probe 12 connected to the moving mechanism 11, and a thermal spray head 13 connected to the moving mechanism 11. The moving mechanism 11 is used to drive the probe 12 and the thermal spray head 13 to move in three-dimensional space, the probe 12 is used to detect the coordinate parameters of the detection point of the product 200, and the thermal spray head 13 is used to spray hot air or hot water to melt the frost layer or ice cubes covering the detection point of the product 200.

[0057] like Figure 1 As shown, in this embodiment, the moving mechanism 11 includes: a Z-axis moving component. During installation, the probe 12 and the thermal nozzle 13 are both connected to the Z-axis moving component. In other embodiments, in order to meet the requirements of the moving direction of the probe 12, the moving mechanism 11 may also include: an X-axis moving component and a Y-axis moving component, so as to realize the flexible movement of the probe 12 in three-dimensional space.

[0058] like Figure 1 As shown, the probe 12 is provided with a probe 121. In this embodiment, the probe 12 is arranged vertically downward, and the probe 121 is located at the bottom of the probe 12 and extends vertically downward.

[0059] like Figure 1 As shown, the thermal spray head 13 is located at one side of the probe 12 and moves synchronously with the probe 12. The thermal spray head 13 is arranged toward the probe 121. In this embodiment, since the probe 121 extends vertically downward, the thermal spray head 13 is arranged obliquely downward, and the extension direction of the thermal spray head 13 and the extension direction of the probe 121 intersect at the lower end position of the probe 121.

[0060] In addition, in some embodiments, the thermal nozzle 13 can be hinged to the moving mechanism 11. The hinged connection method can facilitate the adjustment of the direction of the thermal nozzle 13 to adapt to probes 121 of different shapes and lengths. For example, an angle of 30° to 80° is formed between the thermal nozzle 13 and the probe 121. As needed, the angle between the thermal nozzle 13 and the probe 121 can be adjusted between 30° and 80°.

[0061] Different structural arrangements are adopted according to the different heat media sprayed by the thermal nozzle 13 .

[0062] In this embodiment, atomized hot water is used as a heat medium, and the freezing detection device 10 further includes: a hot water generator 14 connected to the hot spray head 13. The hot spray head 13 is provided with an atomizer. The hot water generator 14 generates hot water, and then the hot water is atomized by the atomizer on the hot spray head 13 and sprayed on the product 200 to melt the frost layer or ice.

[0063] In other embodiments, if hot air is used as the heat medium, the freezing detection device 10 further includes: a hot air generator connected to the hot spray head 13. The hot air is generated by the hot air generator and transported to the hot spray head 13 to melt the frost layer or ice.

[0064] In addition, in order to facilitate the adjustment of the output of the heat medium, the hot nozzle 13 may be provided with a flow regulating valve. The flow regulating valve can be used to adjust the rate of hot air or hot water spraying, and the amount of hot air or hot water sprayed is controlled within a preset range to avoid large-scale melting of ice.

[0065] The freezing detection device 10, as Figure 2 As shown, when working, the moving mechanism 11 drives the probe 12 and the thermal nozzle 13 to move to the detection point of the product 200, and the thermal nozzle 13 located on one side of the probe 12 sprays hot air or hot water to the detection point of the product 200, so that the frost layer or ice covering the detection point of the product 200 melts, so that the probe 121 on the probe 12 can accurately contact the detection point of the product 200, thereby obtaining the actual data of the product 200, improving the detection accuracy of the probe 121 and the processing accuracy of the product 200.

[0066] like Figures 3 to 6 As shown, it is a CNC processing equipment 100 provided by an embodiment of the present invention.

[0067] like Figure 3 As shown, the CNC processing equipment 100 includes: a freezing detection device 10, a CNC processing machine 20, a first freezing positioning fixture 30, and a second freezing positioning fixture 40. The freezing detection device 10 and the first freezing positioning fixture 30 are both installed on the CNC processing machine 20, while the second freezing positioning fixture 40 is installed outside the CNC processing machine 20.

[0068] like Figure 3 As shown, the CNC processing machine 20 is provided with a processing tool 21. The moving mechanism 11 is installed on the CNC processing machine 20. In this embodiment, the moving mechanism 11 is also used to install the processing tool 21. In addition, in order to facilitate tool change and switching between the tool and the probe 12, the moving mechanism 11 is also provided with a rotating tool disc, and the tool switching and switching between the tool and the probe 12 are realized by rotating switching.

[0069] like Figure 3 As shown, the first freezing positioning fixture 30 includes: a first heat exchange component 31 and a first positioning plate 32 detachably connected to the first heat exchange component 31. The first heat exchange component 31 has a cooling function and a heating function. The first positioning plate 32 is provided with a receiving groove for accommodating the product 200.

[0070] In this embodiment, there are multiple ways to implement the first heat exchange component 31 .

[0071] For example, Figure 4 As shown, in this embodiment, the first heat exchange assembly 31 includes: a first heat exchange base 311 and a first cooling fin 312 installed on the first heat exchange base 311. Among them, a first heat dissipation channel 31121 is provided in the first heat exchange base 311. The first cooling fin 312 is located on the side of the first heat exchange base 311 facing the first positioning plate 32. The heat dissipation surface of the first cooling fin 312 is attached to the first heat exchange base 311, and the heat absorption surface of the first cooling fin 312 faces the first positioning plate 32. When the first cooling fin 312 is working, the heat absorption surface of the first cooling fin 312 absorbs the heat of the first positioning plate 32 to achieve cooling. At the same time, the heat dissipation surface of the first cooling fin 312 transfers the heat generated by the work to the first heat exchange base 311, and then takes away the heat through the coolant flowing in the first heat dissipation channel 31121. In addition, heating can also be achieved by using the first cooling fin 312, for example, controlling the flow of the coolant in the first heat dissipation channel 31121, or controlling the input current direction of the first cooling fin 312.

[0072] For the heating function of the first heat exchange component 31, Figure 4Take the structure as an example, for example, when heating is required, the flow rate of the coolant in the first heat dissipation channel 31121 can be slowed down, or the flow of the coolant in the first heat dissipation channel 31121 can be stopped. Since the flow rate of the cooling liquid is reduced or the flow is stopped, the heat emitted by the heat dissipation surface of the first refrigeration plate 312 cannot be effectively taken away, and the cooling effect of the heat absorption surface of the refrigeration plate is smaller than the heating effect of the heat dissipation surface. At this time, the first heat exchange component 31 changes from cooling to heating. For another example, when heating is required, the input current of the first refrigeration plate 312 can be reversed, so that the heat absorption surface and the heat dissipation surface are interchanged, and the first heat exchange component 31 can also be changed from cooling to heating.

[0073] For example, Figure 5 As shown, in other embodiments, the first heat exchange base 311 is provided with a heating plate 3111 and a heat sink 3112 arranged in parallel. The heating plate 3111 is provided with a first heating channel 31111, and the heat sink 3112 is provided with a first heat dissipation channel 31121. The heat dissipation surface of the first refrigeration plate 312 is attached to the side of the heating plate 3111 away from the heat sink 3112. If the first refrigeration plate 312 is not used to achieve heating, a heating plate 3111 and a heat sink 3112 can be provided on the first heat exchange base 311, wherein the heat sink 3112 is used to provide a first heat dissipation flow to achieve heat dissipation of the first refrigeration plate 312, and the heating plate 3111 is used to provide a first heating channel 31111, and a high-temperature liquid is introduced into the first heating channel 31111 to achieve heating, which can achieve a rapid heating function.

[0074] For example, Figure 6 As shown, in other embodiments, the first heat exchange assembly 31 includes: a first freezing plate 313 detachably connected to the first positioning plate 32 and a heater 314 connected to the first freezing plate 313. A first cooling channel 3131 is provided on one side of the first freezing plate 313 facing the first positioning plate 32.

[0075] In this embodiment, the first cooling channel 3131 is arranged in a spiral shape. The spirally arranged first cooling channel can extend the flow distance of the refrigerant in the first freezing plate 313 and improve the efficiency of heat exchange.

[0076] Furthermore, if Figure 6 As shown, in this embodiment, the first freezing plate 313 is divided into a plurality of freezing areas. There are multiple and independent first cooling channels 3131. Each freezing area of ​​the first freezing plate 313 is provided with a first cooling channel 3131. By adopting the regional and independent cooling channels, multiple streams of flowing refrigerant can simultaneously exchange heat with the first freezing plate 313, so that the first freezing plate 313 can be cooled quickly.

[0077] like Figure 6As shown, in this embodiment, the refrigerant enters the first cooling channel 3131 from the outside, flows outward from the center of the spiral, and flows back to the outside after heat exchange. Here, a refrigeration capacity box can be set outside, and the low-temperature refrigerant flows from the refrigeration capacity box into the first cooling channel 3131, and flows back to the refrigeration capacity box for cooling after heat exchange.

[0078] In this embodiment, the heater 314 is a heating tube embedded in the first freezing plate 313 .

[0079] like Figure 3 As shown, the second freezing positioning fixture 40 includes: a second heat exchange component 41 and a second positioning plate 42 detachably connected to the second heat exchange component 41. The second heat exchange component 41 has a refrigeration function. The second positioning plate 42 has the same structure as the first positioning plate 32.

[0080] In this embodiment, the structural arrangement of the second heat exchange component 41 is similar to that of the first heat exchange component 31 , and it is only necessary to remove the heating function based on the first heat exchange component 31 .

[0081] For example, in this embodiment, the second heat exchange assembly 41 includes: a second heat exchange base and a second cooling fin mounted on the second heat exchange base. A second heat dissipation channel is provided in the second heat exchange base. The second cooling fin is located on the side of the second heat exchange base facing the second positioning plate 42. The heat dissipation surface of the second cooling fin is attached to the second heat exchange base. The heat absorption surface of the second cooling fin faces the second positioning plate 42. When the second cooling fin is working, the heat absorption surface of the second cooling fin absorbs the heat of the second positioning plate 42 to achieve cooling. At the same time, the heat dissipation surface of the second cooling fin transfers the heat generated by the work to the second heat exchange base, and then takes the heat away through the coolant flowing in the second heat dissipation channel.

[0082] For another example, in other embodiments, the second heat exchange assembly 41 includes: a second freezing plate detachably connected to the second positioning plate 42. A second cooling channel is provided on a side of the second freezing plate facing the second positioning plate 42. Since the second positioning plate 42 has the same structure as the first positioning plate 32, the first positioning plate 32 can also be detachably connected to the second freezing plate, and the second positioning plate 42 can also be detachably connected to the first freezing plate 313.

[0083] In the above-mentioned CNC processing equipment 100, the first freezing positioning fixture 30 is installed on the CNC processing machine 20 to freeze and fix the current product 200a to be processed. The second freezing positioning fixture 40 is installed outside the CNC processing machine 20 to pre-cool the next product 200b to be processed. During operation, the processing tool 21 on the CNC processing machine 20 performs CNC processing on the frozen and fixed current product 200a to be processed. In addition, during the CNC processing process, the probe 12 and the hot nozzle are moved to the detection point of the current product 200a to be processed through the moving mechanism 11 of the freezing detection device 10, and the hot air or hot water sprayed by the hot nozzle melts the frost layer or ice at the detection point of the current product 200a to be processed, so that the probe 121 can contact the surface of the product 200, thereby obtaining the actual coordinate parameters at the detection point of the product 200. When the current product 200a to be processed is about to be completed by CNC processing, the first positioning plate 32 is heated by the first heat exchange component 31 to melt the ice in advance. When the CNC processing of the current product 200a is completed, the processed product 200 together with the first positioning plate 32 is removed from the first heat exchange component 31 and moved outside the CNC processing machine 20, and then the next product 200b to be processed together with the second positioning plate 42 is removed from the second heat exchange component 41 and installed on the first heat exchange component 31 for freezing and fixing. The processed product 200 is removed from the first positioning plate 32 and replaced with the next product b to be processed, and then installed on the second heat exchange component 41 for pre-cooling. Through the above design, the freezing and fixing of the current product 200a to be processed is achieved, the positioning accuracy of the product 200 is improved, and the next product 200b to be processed is pre-cooled before processing. When the processing of the current product 200 is completed, rapid freezing can be achieved by exchanging the positioning plates, thereby improving the efficiency of freezing. Moreover, during the CNC machining process, the hot nozzle 13 is used to spray hot air or hot water to melt the frost or ice at the detection point of the product 200, so that the probe 121 can accurately detect the actual coordinate value of the detection point of the product 200, thereby improving the detection accuracy of the probe 121 and the machining accuracy of the product 200.

[0084] like Figure 7 As shown, it is a freezing detection method provided by an embodiment of the present invention.

[0085] like Figure 7 As shown, the freezing detection method comprises the steps of:

[0086] S11: Connect to heat source: connect the thermal nozzle 13 to the heat source.

[0087] See also Figure 3The hot spray head 13 is connected to the heat source through a pipeline. Taking hot water as the heat medium, the hot water in the hot water generator 14 is guided to the hot spray head 13 through a hose. In other embodiments, the heat medium can also be hot air generated by a hot air blower.

[0088] S12: The probe 12 and the thermal spray head 13 move: The moving mechanism 11 drives the probe 12 and the thermal spray head 13 to move synchronously toward the detection point of the product 200 .

[0089] See also Figure 2 Driven by the moving mechanism 11 , the probe 12 and the thermal nozzle 13 move toward the detection point close to the product 200 .

[0090] S13: Defrosting or defrosting: Before the probe 121 on the probe 12 contacts the detection point of the product 200, the hot air or hot water sprayed by the hot nozzle 13 heats the local surface of the product 200, so that the frost layer or ice covering the detection point of the product 200 melts.

[0091] See also Figure 2 Before the probe 121 contacts the detection point of the product 200, the atomized hot water sprayed by the hot spray head 13 melts the frost or ice in the area where the detection point is located.

[0092] S14 : Probing the probe point: the probe 121 contacts the probe point of the product 200 to measure the coordinate parameters of the probe point of the product 200 .

[0093] In the above-mentioned freezing detection method, the moving mechanism 11 drives the probe 12 and the thermal nozzle 13 to move to the detection point of the product 200, and the thermal nozzle 13 located on one side of the probe 12 sprays hot air or hot water to the detection point of the product 200, so that the frost layer or ice covering the detection point of the product 200 melts, so that the probe 121 on the probe 12 can accurately contact the detection point of the product 200, thereby obtaining the actual data of the product 200, thereby improving the detection accuracy of the probe 121 and the processing accuracy of the product 200.

[0094] like Figure 8 As shown, it is a CNC processing method provided by an embodiment of the present invention.

[0095] S21: Installing the fixture and detection device: The first freezing positioning fixture 30 is set on the CNC processing machine 20, and the second freezing positioning fixture 40 is set outside the CNC processing machine 20. The freezing detection device 10 is installed on the CNC processing machine 20, and the thermal nozzle 13 is connected to the heat source.

[0096] S22: Freezing and pre-cooling of product 200: placing the current product 200a to be processed on the first freezing positioning fixture 30; the first heat exchange component 31 is refrigerated so that the positioning liquid on the first positioning plate 32 reaches the freezing temperature, and the current product 200a to be processed is frozen and fixed by the positioning liquid; placing the next product 200b to be processed on the second freezing positioning fixture 40; the second heat exchange component 41 is refrigerated so that the positioning liquid on the second positioning plate 42 reaches the pre-cooling temperature, and the next product 200b to be processed is fixed by the nearly frozen positioning liquid; the pre-cooling temperature is greater than the freezing temperature.

[0097] Among them, the precooling temperature can be set to -6℃~0℃. Setting the precooling temperature to -6℃~0℃ can not only precool the next processed product 200 in advance, but also avoid the difficulty in separating the second heat exchange component 41 from the second positioning plate 42 and the first positioning plate 32 due to the precooling temperature being too low.

[0098] For example, the first heat exchange component 31 is refrigerated to cool the positioning liquid on the first positioning plate 32 to below -8°C and enter a frozen state. For example, the second heat exchange component 41 is refrigerated to cool the positioning liquid on the second positioning plate 42 to -3°C. It should be noted that the reason why the positioning liquid is not directly cooled to the freezing temperature in the second freezing positioning fixture 40 is to avoid frost and adhesion between the second heat exchange component 41 and the second positioning plate 42 due to excessively low temperature.

[0099] S23: CNC processing and probe point detection: The tool of the CNC processing machine 20 processes the current product to be processed 200a on the first freezing positioning fixture 30. During the CNC processing process, the probe point of the current product to be processed 200a is detected. The moving mechanism 11 drives the probe 12 and the thermal spray head 13 to move synchronously to the probe point of the current product to be processed 200a. Before the probe 121 on the probe 12 contacts the probe point of the current product to be processed 200a, the thermal spray head 13 sprays hot air or hot water to heat the local surface of the current product to be processed 200a, so that the frost layer or ice covering the probe point of the current product to be processed 200a melts. The probe 121 contacts the probe point of the current product to be processed 200a to measure the coordinate parameters of the probe point of the current product to be processed 200a.

[0100] During the CNC machining process, it is necessary to detect the characteristic probe points of the machining to verify whether the machining is in place. Since the freezing fixation method will cause frost or ice to adhere to the surface of the product 200, before the probe 121 contacts the probe point of the product 200, hot air or hot water is sprayed through the hot nozzle 13 to melt the frost layer or ice, ensuring that the probe 121 can accurately contact the probe point of the product 200.

[0101] S24: Thawing of product 200: When the product 200a to be processed is about to be completed, the first heat exchange component 31 stops refrigeration and starts heating the first positioning plate 32, so that when the product 200a to be processed is completed, the frozen positioning liquid enters a semi-melted state.

[0102] Since the CNC tool processing cycle can be pre-set, or is a pre-determined fixed cycle, the first heat exchange component 31 can stop cooling and start heating before the end of the CNC tool processing cycle, for example, 20 seconds in advance, so that the positioning liquid in the first positioning plate 32 is thawed to a semi-melted state.

[0103] S25: Interchange of positioning plates: The currently processed product 200 together with the first positioning plate 32 is removed from the first heat exchange component 31 and moved out of the CNC processing machine 20; the next product 200b to be processed together with the second positioning plate 42 is removed from the second heat exchange component 41 and moved into the processing table to be installed on the first heat exchange component 31. The first heat exchange component 31 is refrigerated so that the positioning liquid on the second positioning plate 42 reaches the freezing temperature.

[0104] S26: Replace product 200: After removing the currently processed product 200 from the first positioning plate 32, the next product 200 to be processed is installed on the second heat exchange component 41 together with the first positioning plate 32. The second heat exchange component 41 cools the positioning liquid on the first positioning plate 32 to the pre-cooling temperature.

[0105] In the above CNC processing method, the processing tool 21 on the CNC processing machine 20 performs CNC processing on the frozen and fixed product 200a to be processed. In addition, during the CNC processing, the probe 12 and the hot nozzle are moved to the detection point of the product 200a to be processed by the moving mechanism 11 of the freezing detection device 10, and the frost layer or ice cubes covering the detection point of the product 200a to be processed are melted by the hot air or hot water sprayed by the hot nozzle, so that the probe 121 can contact the surface of the product 200, thereby obtaining the actual coordinate parameters of the detection point of the product 200. When the product 200a to be processed is about to be completed by CNC processing, the first positioning plate 32 is heated by the first heat exchange component 31 to melt the ice cubes in advance. When the CNC processing of the current product 200a is completed, the processed product 200 together with the first positioning plate 32 is removed from the first heat exchange component 31 and moved outside the CNC processing machine 20, and then the next product 200b to be processed together with the second positioning plate 42 is removed from the second heat exchange component 41 and installed on the first heat exchange component 31 for freezing and fixing. The processed product 200 is removed from the first positioning plate 32 and replaced with the next product b to be processed, and then installed on the second heat exchange component 41 for pre-cooling. Through the above design, the freezing and fixing of the current product 200a to be processed is achieved, the positioning accuracy of the product 200 is improved, and the next product 200b to be processed is pre-cooled before processing. When the processing of the current product 200 is completed, rapid freezing can be achieved by exchanging the positioning plates, thereby improving the efficiency of freezing. Moreover, during the CNC machining process, the hot nozzle 13 is used to spray hot air or hot water to melt the frost or ice at the detection point of the product 200, so that the probe 121 can accurately detect the actual coordinate value of the detection point of the product 200, thereby improving the detection accuracy of the probe 121 and the machining accuracy of the product 200.

[0106] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A freezing detection device, characterized in that: Applied to CNC processing equipment, the CNC processing equipment includes a first freezing positioning fixture and a CNC processing table, the first freezing positioning fixture is installed on the CNC processing table to freeze and fix the product to be processed, and the freezing detection device includes: A moving mechanism, the moving mechanism comprising an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly; A probe connected to the moving mechanism, the probe is used to detect the coordinate parameters of the detection point of the product; the probe is provided with a probe; and A hot spray head connected to the moving mechanism; the hot spray head is located at one side of the probe and moves synchronously with the probe; the hot spray head is arranged toward the probe and is used to spray hot air or hot water to melt the frost or ice covering the probe point of the product.

2. The freezing detection device according to claim 1, characterized in that: Also includes: A hot gas generator is connected to the thermal spray head.

3. The freezing detection device according to claim 1, characterized in that: Also includes: A hot water generator is connected to the hot spray head; the hot spray head is provided with an atomizer.

4. The freezing detection device according to claim 1, characterized in that: The thermal spray head is hinged on the moving mechanism.

5. The freezing detection device according to claim 4, characterized in that: The thermal nozzle and the probe form an angle of 30° to 80°.

6. The freezing detection device according to claim 1, characterized in that: The thermal nozzle is provided with a flow regulating valve.

7. A CNC processing equipment, characterized in that: include: The freezing detection device according to any one of claims 1 to 6, further comprising: CNC processing machine; the CNC processing machine is provided with a processing tool; the moving mechanism is mounted on the CNC processing machine; A first freezing positioning fixture installed on the CNC processing machine; the first freezing positioning fixture comprises: a first heat exchange component and a first positioning plate detachably connected to the first heat exchange component; the first heat exchange component has a cooling function and a heating function; the first positioning plate is provided with a receiving groove for accommodating a product; and A second freezing positioning fixture is installed outside the CNC processing machine; the second freezing positioning fixture includes: a second heat exchange component and a second positioning plate detachably connected to the second heat exchange component; the second heat exchange component has a refrigeration function; the second positioning plate has the same structure as the first positioning plate.

8. A freezing detection method, applied to the freezing detection device according to any one of claims 1 to 6, characterized in that: Includes steps: Connect the thermal nozzle to the heat source; The moving mechanism drives the probe and the thermal nozzle to move synchronously to the detection point of the product; Before the probe on the probe contacts the detection point of the product, the hot air or hot water sprayed by the hot nozzle heats the local surface of the product, so that the frost or ice covering the detection point of the product melts; The probe contacts the probing point of the product to measure coordinate parameters of the probing point of the product.

9. A CNC processing method, characterized in that: Includes steps: The first freezing positioning fixture is set on the CNC processing machine, and the second freezing positioning fixture is set outside the CNC processing machine; the freezing detection device is installed on the CNC processing machine, and the thermal nozzle is connected to the heat source; The product to be processed is placed on the first frozen positioning fixture; the first heat exchange component is refrigerated so that the positioning liquid on the first positioning plate reaches the freezing temperature, and the product to be processed is frozen and fixed by the positioning liquid; the next product to be processed is placed on the second frozen positioning fixture; the second heat exchange component is refrigerated so that the positioning liquid on the second positioning plate reaches the pre-cooling temperature, and the next product to be processed is fixed by the nearly frozen positioning liquid; the pre-cooling temperature is greater than the freezing temperature; The tool of the CNC processing machine processes the product to be processed on the first freezing positioning fixture; during the CNC processing, the detection point of the product to be processed is detected; the moving mechanism drives the probe and the thermal nozzle to move synchronously to the detection point of the product to be processed; before the probe on the probe contacts the detection point of the product to be processed, the thermal nozzle sprays hot air or hot water to heat the local surface of the product to be processed, so that the frost layer or ice covering the detection point of the product to be processed melts; the probe contacts the detection point of the product to be processed to measure the coordinate parameters of the detection point of the product to be processed; When the product to be processed is about to be finished, the first heat exchange component stops refrigeration and starts heating the first positioning plate, so that when the product to be processed is finished, the frozen positioning liquid enters a semi-melted state; The currently processed product together with the first positioning plate is removed from the first heat exchange component and moved out of the CNC processing machine; the next product to be processed together with the second positioning plate is removed from the second heat exchange component and moved into the processing table to be installed on the first heat exchange component, and the first heat exchange component is refrigerated so that the positioning liquid on the second positioning plate reaches the freezing temperature; After the currently processed product is removed from the first positioning plate, the next product to be processed is installed on the second heat exchange component together with the first positioning plate, and the second heat exchange component is refrigerated so that the positioning liquid on the first positioning plate reaches the pre-cooling temperature.

10. The CNC processing method according to claim 9, characterized in that: The precooling temperature is -6°C to 0°C.

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