A bus-type temperature acquisition device for numerically controlled machine tools and a method of using the same

Abstract

The present invention belongs to the field of temperature acquisition technology, and is particularly directed to a bus-type temperature acquisition device for CNC machine tools and a method of use. It includes a sensor probe, the sensor probe is electrically connected to the bus of an external display instrument, the sensor probe is provided with a symmetrically distributed fixed seat with thermal conductivity, a heat-conducting rod is fixedly connected to the fixed seat, a sleeve is sealingly and slidably connected to the heat-conducting rod, a thermistor is installed between the sleeve and the adjacent heat-conducting rod, and a rack is fixedly connected to one of the heat-conducting rods. The present invention drives the sensor probe to move through a sliding ring. When the temperature of the CNC machine tool is too high and the working temperature of the sensor probe continues to exceed the maximum critical value, the sensor probe is moved away from the CNC machine tool to avoid long-term high-temperature operation to burn the core components in the sensor probe, thereby causing the temperature collected by the sensor probe to be abnormal, and then causing the operator to misjudge the temperature of the CNC machine tool.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature collection, and in particular to a bus-type temperature collection device for a numerical control machine tool and a use method thereof. Background Art

[0002] The bus-type temperature acquisition device of a CNC machine tool refers to a device that controls multiple temperature sensor units through a main controller. Generally, the bus-type temperature acquisition device consists of a display instrument with a main controller and several temperature sensor probes. The several temperature sensor probes are installed at different positions of the CNC machine tool during use. Each temperature sensor probe is connected to a power wire and a resistance wire. The temperature sensor probe collects the external temperature through its internal thermistor. When the external temperature changes, the resistance value of the temperature sensor probe changes synchronously, which makes the current passing through the power wire and the resistance wire different under different temperature conditions. The power wires and resistance wires of several temperature sensor probes are finally collected on the display instrument through a bus, thereby realizing the collection, display and recording of different temperatures. This collection method integrates sensors, signal processing and communication interfaces, reduces the number of components and connection points in the system, and simplifies the installation and maintenance process.

[0003] However, the operating temperature of the existing temperature sensor probe has a maximum critical value. During the operation of the temperature sensor probe, once the temperature of a certain temperature collection point of the CNC machine tool exceeds the maximum critical value of the temperature sensor probe for a long time, the internal core chip of the temperature sensor will be overloaded for a long time, and then the internal core chip will be burned. If a temperature sensor probe is damaged, it will affect the circuit transmission of the display instrument bus, and then cause errors in the temperature values ​​collected by other temperature sensor probes. Summary of the invention

[0004] In order to overcome the shortcoming that the internal core chip of the temperature sensor may be burned due to long-term overload operation, the present invention provides a bus-type temperature acquisition device for a numerical control machine tool and a method for using the device.

[0005] The technical solution is: a bus-type temperature acquisition device for a CNC machine tool, comprising a sensor probe, the sensor probe is electrically connected to the bus of an external display instrument, the sensor probe is provided with a symmetrically distributed fixed seat and both have thermal conductivity, a heat-conducting rod is fixedly connected to the fixed seat, a sleeve is sealingly and slidably connected to the heat-conducting rod, a thermistor is installed between the sleeve and the adjacent heat-conducting rod, one of the sleeves is fixedly connected to a rack, the symmetrically distributed fixed seats are commonly fixedly connected to a support frame, a gear meshing with the rack is rotatably connected to the support frame, a pointer is fixedly connected to the side of the gear away from the sensor probe through a connecting shaft, a dial with a scale is fixedly connected to the support frame of the symmetrically distributed fixed seat, and the connecting shaft of the gear passes through the dial.

[0006] Furthermore, the scales of the dial are evenly distributed in the circumferential direction, and the number of scales on the dial is the same as the number of teeth on the gear.

[0007] Furthermore, the maximum operating temperature of the sensing probe is the same as the minimum operating temperature of the thermal block.

[0008] Furthermore, the symmetrically distributed fixing seats are slidably connected with a heat-conducting frame, the heat-conducting frame is slidably connected with the sensing probe, and the sensing probe is fixed with symmetrically distributed limiting blocks that are squeezed and matched with the heat-conducting frame.

[0009] Furthermore, the opposite sides of the symmetrically distributed sleeves are fixedly connected with limit frames, and a limit groove is provided on one side of the limit frame close to the sensor probe. A sliding ring is rotatably connected to the sensor probe, and the limit groove is slidably connected to the sliding ring and is limitedly matched.

[0010] Furthermore, it also includes a connecting block, which is rotatably connected to a side of the sensor probe away from the symmetrically distributed fixing seat, and a fixing cylinder is fixedly connected to a side of the fixing seat close to the connecting block, and a power supply wire and a resistance wire are fixedly connected to the connecting block, both of which are electrically connected to the sensor probe, and both of the power supply wire and the resistance wire pass through the connecting block, and the power supply wire and the resistance wire are respectively slidably connected to adjacent fixing cylinders, and the power supply wire and the resistance wire are respectively fixed to adjacent sleeves, and both of the power supply wire and the resistance wire are electrically connected to the main line of an external display instrument through wires.

[0011] Furthermore, a heat insulating sleeve is fixedly connected to one side of the sensing probe away from the symmetrically distributed fixing seat, the connecting block is located inside the heat insulating sleeve, a sliding plate is slidably connected to one side of the heat insulating sleeve away from the sensing probe, and elastic parts uniformly distributed circumferentially are fixedly connected between the sliding plate and the heat insulating sleeve.

[0012] Furthermore, a side of the sleeve close to the sensor probe is provided with exhaust holes distributed in a linear array, and the apertures of the exhaust holes gradually decrease from a side close to the adjacent heat-conducting rod to a side away from the adjacent heat-conducting rod.

[0013] Furthermore, the exhaust hole on one of the sleeves faces a position on the sensor probe close to the gear, and the exhaust hole on the other sleeve faces a position on the sensor probe far from the gear.

[0014] Further, a method for using a bus-type temperature acquisition device for a CNC machine tool is provided, based on the above-mentioned bus-type temperature acquisition device for a CNC machine tool, and the specific steps are as follows:

[0015] Step 1: First, rotate the sensing probe so that the limit block is misaligned with the adjacent hole on the heat conducting frame, and then move the sensing probe and the sliding ring so that the sliding ring moves from the vertical groove of the limit groove to the horizontal groove;

[0016] Step 2: Push the sliding ring to move along the horizontal groove of the limit groove. The sliding ring drives the heat transfer frame to move through the sensor probe and the limit block. Insert the sensor probe and the heat transfer frame into the collected hole of the CNC machine tool, and then drive the sliding ring to move into the adjacent vertical groove on the limit groove to limit the sliding ring.

[0017] Step 3: Several fixing seats are respectively installed in different temperature collection areas of the CNC machine tool, so that the rear ends of several sensor probes and the rear ends of several heat-conducting frames are respectively close to different positions of the CNC machine tool. The sensor probe collects the temperature and converts the temperature into an electrical signal. Finally, the electrical signal is transmitted to the external display instrument and displayed as a temperature value. When the sensor probe is working, the heat insulation sleeve insulates the position of the sensor probe close to the connection block;

[0018] Step 4: When the sensor probe collects the temperature of the CNC machine tool, the heat conducting frame transfers the high temperature to the adjacent thermistor block through the fixed seat and the adjacent heat conducting rod. If the temperature value of the collection area exceeds the maximum working temperature of the sensor probe, the thermistor block expands due to the heat and drives the sensor probe to move through the adjacent sleeve and the sliding ring, so that the sensor probe gradually moves away from the CNC machine tool.

[0019] Step 5: The sleeve near the resistance wire drives the rack to move during the movement, and the rack drives the pointer to rotate through the gear, so that the scale indicated by the pointer on the dial changes;

[0020] Step 6: When the temperature value in the collection area is too high and causes the sleeve to move, the symmetrically distributed sleeves drive the power wire and the resistance wire to move along the adjacent fixed tubes, so that the power wire and the resistance wire lose connection with the main line of the external display instrument;

[0021] Step 7: When the temperature value in the collection area is too high and causes the sleeve to move, the sleeve and the adjacent heat-conducting rod squeeze the gas between them, and the gas is discharged to the sensor probe through the exhaust hole;

[0022] Step 8: When the temperature of the CNC machine tool returns to the working temperature of the sensor probe, the heat conduction frame transfers the temperature to the adjacent thermistor block through the fixed seat and the adjacent heat conduction rod, the thermistor block shrinks and resets and drives the adjacent sleeve to reset, the symmetrically distributed sleeves jointly drive the sliding ring to move and reset, the sliding ring drives the sensor probe to move and reset, the sensor probe resets and continues to collect temperature from the CNC machine tool;

[0023] Step 9: During the process of resetting the sleeve, the symmetrically distributed sleeves drive the power wire and the resistance wire to reset respectively. When the device is stopped, turn off the external display. If the temperature collection position on the CNC machine tool needs to be replaced, remove the fixing seat and collect and reset the device. Finally, clean and maintain the device so that it can be installed at the next collection position of the CNC machine tool.

[0024] The beneficial effects are as follows: 1. The present invention drives the sensor probe to move by means of a sliding ring. When the temperature of the CNC machine tool is too high and the working temperature of the sensor probe continues to exceed the maximum critical value, the sensor probe is moved away from the CNC machine tool to avoid long-term high-temperature operation to burn the core components in the sensor probe, thereby causing the temperature collected by the sensor probe to be abnormal, thereby causing the operator to misjudge the temperature of the CNC machine tool;

[0025] 2. The pointer is driven to rotate by the gear. When the sensor probe loses contact with the CNC machine tool, the temperature of the CNC machine tool is judged by the scale value indicated by the pointer on the dial, thereby improving the applicability of the device in an over-temperature environment;

[0026] 3. The power wire and the resistance wire are driven to move through two sleeves respectively. When the working temperature of the sensor probe exceeds the high temperature critical value, the connection of the sensor probe with over-high temperature is disconnected to ensure the normal communication and data transmission of the main line of the external display instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a three-dimensional structural cross-sectional view of the sleeve of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the pointer and dial of the present invention;

[0030] Figure 4 is a three-dimensional structural cross-sectional view of the sliding plate of the present invention;

[0031] Figure 5It is a schematic diagram of the three-dimensional structure of the sliding ring of the present invention;

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the exhaust hole of the present invention.

[0033] The meanings of the reference numerals in the figure are: 1: sensing probe, 2: fixing seat, 3: heat-conducting rod, 4: sleeve, 5: thermistor block, 6: rack, 7: gear, 8: pointer, 9: dial, 10: heat-conducting frame, 11: limit block, 12: limit frame, 13: limit groove, 14: sliding ring, 15: connecting block, 16: fixing cylinder, 17: power supply wire, 18: resistance wire, 19: insulation sleeve, 20: sliding plate, 21: exhaust hole. DETAILED DESCRIPTION

[0034] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0035] The operating temperature of the existing temperature sensor probe has a maximum critical value. During the operation of the temperature sensor probe, if the temperature of a certain temperature collection point of the CNC machine tool exceeds the maximum critical value of the temperature sensor probe for a long time, the internal core chip of the temperature sensor will be overloaded for a long time, and then the internal core chip of the temperature sensor probe will be burned.

[0036] Embodiment 1: A bus-type temperature acquisition device for a numerically controlled machine tool, such as Figure 1-Figure 3 As shown, it includes a sensor probe 1, the sensor probe 1 is electrically connected to the bus of the external display instrument, the bus of the external display instrument is electrically connected to several sensor probes 1 at the same time, the sensor probe 1 is provided with a fixing seat 2 which is symmetrically distributed on the left and right and has thermal conductivity, the fixing seat 2 is provided with a hole for threaded installation, a heat-conducting rod 3 is fixedly connected to the fixing seat 2, a sleeve 4 is sealed and slidably connected to the heat-conducting rod 3, a thermal block 5 is installed between the sleeve 4 and the adjacent heat-conducting rod 3, the maximum operating temperature of the sensor probe 1 is the same as the minimum operating temperature of the thermal block 5, the temperature sensing element in the sensor probe 1 is a TSIC506F chip, and in actual use, the best temperature monitoring range of the chip is -10°C to 60 °C, so the material of the thermal block 5 is high-temperature paraffin or other materials that can start to expand at around 60°C, a rack 6 is fixedly connected to one of the sleeves 4, and a support frame is commonly fixedly connected to the symmetrically distributed fixing seats 2, and a gear 7 meshing with the rack 6 is rotatably connected to the support frame, and a pointer 8 is fixedly connected to the upper side of the gear 7 through a connecting shaft, and a dial 9 with a scale is fixedly connected to the support frame of the two fixing seats 2, and the connecting shaft of the gear 7 passes through the dial 9. The scale of the dial 9 is evenly distributed in the circumferential direction, and the number of scales on the dial 9 is the same as the number of teeth of the gear 7. For every rotation of one tooth of the gear 7, the pointer 8 moves one scale on the dial 9, so that the expansion degree of the thermal block 5 is more intuitively reflected in the scale value of the dial 9.

[0037] like Figure 2 and Figure 5 As shown, the symmetrically distributed fixing seats 2 are commonly limited and slidably connected with a heat-conducting frame 10, and two holes symmetrically distributed on the left and right are provided on the heat-conducting frame 10. The front and rear sides of the holes are both provided with chamfers to facilitate the passage of adjacent limit blocks 11. The heat-conducting frame 10 is slidably connected with the sensing probe 1, and the limit blocks 11 symmetrically distributed on the left and right and squeezed and matched with the heat-conducting frame 10 are fixed on the sensing probe 1. After the holes of the heat-conducting frame 10 are aligned with the adjacent limit blocks 11, the limit blocks 11 move and can pass through the adjacent holes on the heat-conducting frame 10. After the holes of the heat-conducting frame 10 are misaligned with the adjacent limit blocks 11, the limit blocks 11 move and squeeze to drive the heat-conducting frame 10 to move.

[0038] like Figure 2 and Figure 5 As shown, the opposite sides of the two sleeves 4 symmetrically distributed on the left and right are fixedly connected with the limiting frames 12, and the opposite sides of the two limiting frames 12 are provided with limiting grooves 13, the limiting grooves 13 are composed of a horizontal groove and a plurality of vertical grooves which are interconnected, and a sliding ring 14 is rotatably connected to the sensing probe 1, and the limiting groove 13 is slidably connected and limitedly matched with the sliding ring 14, and after the sliding ring 14 is located in a vertical groove of the limiting groove 13, the front and rear sides of the sliding ring 14 are blocked, so that it cannot move forward and backward, and when the sliding ring 14 is located in the horizontal groove of the limiting groove 13, the front and rear positions of the sliding ring 14 can be slidably adjusted.

[0039] When the operator needs to use the device to collect and detect the temperature of the CNC machine tool, the operator first installs several devices at different temperature collection positions on the CNC machine tool, and electrically connects several sensor probes 1 to the main line of the external display. The following takes a sensor probe 1 as an example. The operator installs the fixing base 2 in the designated temperature collection area by screws, so that the rear end of the sensor probe 1 and the rear end of the heat conductive frame 10 are both in close contact with the CNC machine tool. Then, as the temperature on the CNC machine tool changes, the sensor probe 1 collects the temperature and converts the temperature into an electrical signal. Finally, the electrical signal is transmitted to the external display and displayed as a temperature value.

[0040] In the process of the sensor probe 1 collecting the temperature of the CNC machine tool, the heat-conducting frame 10 transfers the high temperature to the two heat-conducting rods 3 through the two fixing seats 2, and the heat-conducting rods 3 transfer the temperature to the adjacent thermistor block 5. If the temperature value of the collection area exceeds the maximum working temperature of the sensor probe 1, the thermistor block 5 expands due to the heat and drives the adjacent sleeve 4 to move forward. The two sleeves 4 jointly drive the sliding ring 14 to move forward, and the sliding ring 14 drives the sensor probe 1 to move forward, so that the sensor probe 1 gradually moves away from the CNC machine tool to avoid the working temperature of the sensor probe 1 continuously exceeding the maximum critical value when the temperature of the CNC machine tool is too high. Long-term high-temperature operation will burn the core components in the sensor probe 1, thereby causing the value transmitted by the sensor probe 1 to be unstable, and even causing damage to the sensor probe 1.

[0041] In the process of the left sleeve 4 moving forward, the left sleeve 4 drives the rack 6 to move forward, and the rack 6 drives the pointer 8 to rotate through the gear 7, so that the scale indicated by the pointer 8 on the dial 9 changes. The higher the temperature of the CNC machine tool, the farther the sensor probe 1 is from the CNC machine tool, and the more scales the pointer 8 travels on the dial 9. After the sensor probe 1 loses contact with the CNC machine tool, the temperature of the CNC machine tool is judged by the scale value of the dial 9.

[0042] Before installing the fixed seat 2, if it is necessary to insert the sensor probe 1 into the hole of the CNC machine tool for temperature collection, the operator drives the sensor probe 1 and the sliding ring 14 to move upward, so that the heat conductive frame 10 moves upward, and the sliding ring 14 moves from the adjacent vertical grooves of the two limit grooves 13 to the horizontal groove, and then the operator manually pushes the sensor probe 1 and the sliding ring 14 to move backward, and the sliding ring 14 moves backward along the horizontal grooves on the upper sides of the two limit grooves 13. At this time, the operator inserts the sensor probe 1 into the collected hole of the CNC machine tool (the collected hole is a horizontally set hole), and then the operator drives the sensor probe 1 and the sliding ring 14 to move downward, so that the sliding ring 14 moves to the adjacent vertical grooves on the two limit grooves 13, limits the sliding ring 14, and then the operator installs the fixed seat 2 through the above steps.

[0043] Before the operator manually pushes the sensor probe 1 and the sliding ring 14 to move backward, if the collected hole of the CNC machine tool is sufficient to support the entry of the heat-conducting frame 10, the operator first manually rotates the sensor probe 1 before pushing the sensor probe 1 backward, so that the limit block 11 is misaligned with the adjacent hole on the heat-conducting frame 10, and then the operator manually pushes the sensor probe 1 backward, and the sensor probe 1 drives the heat-conducting frame 10 to move backward through the two limit blocks 11, so that the rear end of the heat-conducting frame 10 is kept flush with the rear end of the sensor probe 1, so that the temperature transmitted by the heat-conducting frame 10 is closer to the temperature collected by the sensor probe 1. When the temperature of the CNC machine tool is too high, the reaction speed of the heat-conducting frame 10, the fixing seat 2, and the heat-conducting rod 3 is faster, thereby improving the reaction speed of the thermistor 5, avoiding the thermistor 5 from failing to react in time after the working temperature of the sensor probe 1 is too high, resulting in the sensor probe 1 running in a high temperature state for a long time and being damaged.

[0044] When the temperature of the CNC machine tool recovers to the working temperature of the sensor probe 1, the heat-conducting frame 10 transfers the temperature to the adjacent thermistor block 5 through the fixing seat 2 and the adjacent heat-conducting rod 3, the thermistor block 5 shrinks and resets and drives the adjacent sleeve 4 to reset, the two sleeves 4 jointly drive the sliding ring 14 to move backward and reset, the sliding ring 14 drives the sensor probe 1 to move backward and reset, the sensor probe 1 resets and continues to collect the temperature of the CNC machine tool. When the device is stopped, the operator can turn off the external display. If the temperature collection position on the CNC machine tool needs to be replaced, the operator removes the fixing seat 2, rotates and resets the sensor probe 1, collects and resets the device, and finally cleans and maintains the device so that the device can be installed at the next collection position of the CNC machine tool.

[0045] In the above embodiment, the sensor probe 1 is directly electrically connected to the external display through a line, while in the following embodiment, the sensor probe 1 is electrically connected to the bus of the external display through a power supply wire 17 and a resistance wire 18.

[0046] When a temperature sensor probe of a bus-type temperature acquisition device is damaged, the resistance value of the damaged temperature sensor probe will change, and the characteristics of the capacitor will also change. These changes will introduce additional electrical noise or reflections, thereby interfering with the signal transmitted by the external display bus, and thus causing errors in the temperature values ​​collected by other temperature sensor probes.

[0047] Embodiment 2: Based on embodiment 1, Figure 1 and Figure 2As shown, it also includes a connecting block 15, which is rotatably connected to the sensing probe 1, and a fixing cylinder 16 is fixedly connected to the front side of the fixing seat 2. A power supply wire 17 and a resistance wire 18, which are both electrically connected to the sensing probe 1, are fixedly connected to the connecting block 15. The power supply wire 17 is used to provide a power supply voltage to the sensing probe 1 to ensure that the sensing probe 1 can work normally. The resistance wire 18 is connected to a thermistor. The thermistor changes the current in the resistance wire 18 according to temperature changes, and is used to convert the temperature into an electrical signal and transmit the signal to an external display. The power supply wire 17 and the resistance wire 18 both pass through the connecting block 15, and the power supply wire 17 and the resistance wire 18 are respectively slidably connected to adjacent fixing cylinders 16. The power supply wire 17 and the resistance wire 18 are respectively fixedly connected to adjacent sleeves 4, and the power supply wire 17 and the resistance wire 18 are both electrically connected to the main line of the external display through wires.

[0048] like Figure 1 , Figure 2 and Figure 4 As shown, a heat-insulating sleeve 19 is fixedly connected to the sensing probe 1, and the connecting block 15 is located inside the heat-insulating sleeve 19. The heat-insulating sleeve 19 wraps and insulates the connection between the power supply wire 17 and the resistance wire 18. A sliding plate 20 is slidably connected to the front side of the heat-insulating sleeve 19, and circumferentially uniformly distributed elastic members are fixedly connected between the sliding plate 20 and the heat-insulating sleeve 19, wherein the elastic members are springs.

[0049] like Figure 6 As shown, the rear parts of the opposite sides of the two sleeves 4 are provided with a plurality of exhaust holes 21 distributed in a linear array, the aperture of the right exhaust hole 21 gradually decreases from right to left, and the aperture of the left exhaust hole 21 gradually decreases from left to right, which is used to accelerate the gas velocity and reduce its static pressure. The exhaust holes 21 on the right sleeve 4 face the upper side of the sensor probe 1, and the exhaust holes 21 on the left sleeve 4 face the lower side of the sensor probe 1, so that the airflow discharged from the exhaust holes 21 moves around the sensor probe 1, thereby increasing the fluidity of the airflow near the sensor probe 1, and thereby reducing the temperature of the sensor probe 1.

[0050] During the forward movement of the sleeve 4, the right sleeve 4 drives the power wire 17 to move forward along the adjacent fixed tube 16, and the left sleeve 4 drives the resistance wire 18 to move forward along the adjacent fixed tube 16, so that both the power wire 17 and the resistance wire 18 lose connection with the main line of the external display, and the external display no longer displays the temperature collected by the sensor probe 1. By disconnecting the connection of the sensor probe 1 with too high a temperature, the normal communication and data transmission of the main line of the external display are guaranteed (for example, when a sensor probe 1 is overheated, its resistance value will change, the characteristics of the capacitor will change, and it may even cause local short circuit or open circuit of certain components. These changes will introduce additional electrical noise or reflection, thereby interfering with the signal transmitted by the external display bus), thereby ensuring the accuracy of the temperature collected by other sensor probes 1.

[0051] During the operation of the sensor probe 1, the heat insulating sleeve 19 insulates the front end of the sensor probe 1, and reduces the rate at which the temperature of the CNC machine tool is transmitted to the connection of the power wire 17 and the connection of the resistance wire 18, thereby preventing the outer sheath (the outer sheath is the outer skin of the wire) of the power wire 17 and the outer sheath of the resistance wire 18 from being softened by heat, and further preventing the connection between the power wire 17 and the connection block 15 and the connection between the resistance wire 18 and the connection block 15 from loosening when the CNC machine tool vibrates. When the CNC machine tool vibrates and causes the connection between the power wire 17 and the connection block 15 and the connection between the resistance wire 18 and the connection block 15 to move, the power wire 17 and the resistance wire 18 jointly drive the connection block 15 to rotate, and the connection block 15 drives the sliding plate 20 to move, thereby reducing the hard extrusion force on the connection between the power wire 17 and the resistance wire 18 when they move, and preventing the connection between the power wire 17 and the resistance wire 18 from being worn or even broken due to movement.

[0052] When the sleeve 4 moves forward, the sleeve 4 draws external gas into the interior through the exhaust hole 21. When the sleeve 4 moves backward, the sleeve 4 and the adjacent heat-conducting rod 3 squeeze the gas between them, and the gas is discharged to the sensor probe 1 through the exhaust hole 21. Take the exhaust hole 21 on the right as an example (when the airflow passes through the gradually decreasing hole, the gas speed will increase and its static pressure will decrease, which will cause the local pressure to drop, thereby causing the local temperature to drop. According to physical principles and thermodynamic effects, the gas will absorb heat during the expansion process, and during the compression process It will release heat, which is similar to placing a mineral water bottle on one side of the fan exhaust port, and the mouth of the mineral water bottle is located on the side away from the fan. The temperature of the air flow blown out from the mouth of the mineral water bottle will be lower than the temperature of the air flow directly discharged through the fan). The gas is cooled to a certain extent and the vicinity of the sensor probe 1 is cooled. The gas from the right exhaust hole 21 is discharged to the upper side of the sensor probe 1, and the gas from the left exhaust hole 21 is discharged to the lower side of the sensor probe 1, so that the gas flows around the sensor probe 1, increasing the fluidity of the gas, and cooling the high temperature generated by the CNC machine tool to a certain extent.

[0053] When the temperature of the CNC machine tool returns to the working temperature of the sensor probe 1, the sleeve 4 is reset through the above steps, the sleeve 4 on the right drives the power wire 17 to reset, and the sleeve 4 on the left drives the resistance wire 18 to reset, so that the power wire 17 and the resistance wire 18 are connected to the main line of the external display through the wire again. When the device is stopped, the operator can turn off the external display. If the temperature collection position on the CNC machine tool needs to be replaced, the operator will remove the fixing seat 2 and collect and reset the device. Finally, the device is cleaned and maintained to facilitate the installation of the device at the next collection position of the CNC machine tool.

[0054] Embodiment 3: Based on Embodiment 2, a method for using a bus-type temperature acquisition device for a CNC machine tool is provided, such as Figure 1-Figure 6 As shown, based on the above-mentioned CNC machine tool bus-type temperature acquisition device, the specific steps are as follows:

[0055] Step 1: firstly rotate the sensing probe 1 so that the limiting block 11 is misaligned with the adjacent hole on the heat conducting frame 10, and then move the sensing probe 1 and the sliding ring 14 so that the sliding ring 14 moves from the vertical groove of the limiting groove 13 to the horizontal groove;

[0056] Step 2: Push the sliding ring 14 to move along the horizontal groove of the limiting groove 13. The sliding ring 14 drives the heat conducting frame 10 to move through the sensing probe 1 and the limiting block 11. Insert the sensing probe 1 and the heat conducting frame 10 into the collected hole of the CNC machine tool, and then drive the sliding ring 14 to move into the adjacent vertical groove on the limiting groove 13 to limit the sliding ring 14.

[0057] Step 3: Several fixing seats 2 are respectively installed in different temperature collection areas of the CNC machine tool, so that the rear ends of several sensor probes 1 and the rear ends of several heat-conducting frames 10 are respectively close to different positions of the CNC machine tool, and the sensor probe 1 collects the temperature and converts the temperature into an electrical signal, and finally the electrical signal is transmitted to the external display instrument and displayed as a temperature value. During the operation of the sensor probe 1, the heat-insulating sleeve 19 insulates the position of the sensor probe 1 close to the connecting block 15;

[0058] Step 4: When the sensor probe 1 collects the temperature of the CNC machine tool, the heat conducting frame 10 transfers the high temperature to the adjacent thermistor block 5 through the fixing seat 2 and the adjacent heat conducting rod 3. If the temperature value of the collection area exceeds the maximum working temperature of the sensor probe 1, the thermistor block 5 expands due to the heat and drives the sensor probe 1 to move through the adjacent sleeve 4 and the sliding ring 14, so that the sensor probe 1 gradually moves away from the CNC machine tool.

[0059] Step 5: The sleeve 4 near the resistance wire 18 drives the rack 6 to move during the movement, and the rack 6 drives the pointer 8 to rotate through the gear 7, so that the scale indicated by the pointer 8 on the dial 9 changes;

[0060] Step 6: When the temperature value in the collection area is too high and causes the sleeve 4 to move, the symmetrically distributed sleeves 4 respectively drive the power wire 17 and the resistance wire 18 to move along the adjacent fixed tube 16, so that the power wire 17 and the resistance wire 18 lose connection with the main line of the external display instrument;

[0061] Step 7: When the temperature value in the collection area is too high and causes the sleeve 4 to move, the sleeve 4 and the adjacent heat-conducting rod 3 squeeze the gas therebetween, and the gas is discharged to the sensor probe 1 through the exhaust hole 21;

[0062] Step 8: When the temperature of the CNC machine tool is restored to the working temperature of the sensor probe 1, the heat conducting frame 10 transfers the temperature to the adjacent thermistor block 5 through the fixing seat 2 and the adjacent heat conducting rod 3, the thermistor block 5 contracts and resets and drives the adjacent sleeve 4 to reset, the symmetrically distributed sleeves 4 jointly drive the sliding ring 14 to move and reset, the sliding ring 14 drives the sensor probe 1 to move and reset, the sensor probe 1 resets and continues to collect the temperature of the CNC machine tool;

[0063] Step 9: During the resetting process of the sleeve 4, the symmetrically distributed sleeve 4 drives the power supply wire 17 and the resistance wire 18 to reset respectively. When the device is stopped, the external display is turned off. If the temperature collection position on the CNC machine tool needs to be replaced, the fixing seat 2 is removed and the device is collected and reset. Finally, the device is cleaned and maintained so that the device can be installed at the next collection position of the CNC machine tool.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bus-type temperature acquisition device for a numerically controlled machine tool, comprising a sensor probe (1), wherein the sensor probe (1) is electrically connected to a bus of an external display device, and wherein the sensor probe (1) is provided with symmetrically distributed fixing seats (2) both having thermal conductivity, wherein: It also comprises a heat-conducting rod (3), the heat-conducting rod (3) being fixedly connected to an adjacent fixing seat (2), a sleeve (4) being sealingly and slidably connected to the heat-conducting rod (3), a thermosensitive block (5) being installed between the sleeve (4) and the adjacent heat-conducting rod (3), one of the sleeves (4) being fixedly connected to a rack (6), the symmetrically distributed fixing seats (2) being commonly fixedly connected to a support frame, the support frame being rotatably connected to a gear (7) meshing with the gear (6), a pointer (8) being fixedly connected to a side of the gear (7) away from the sensing probe (1) via a connecting shaft, a dial (9) with a scale being fixedly connected to the support frame of the symmetrically distributed fixing seats (2), and the connecting shaft of the gear (7) passing through the dial (9); The symmetrically distributed fixing seats (2) are slidably connected to a heat-conducting frame (10), the heat-conducting frame (10) is slidably connected to the sensing probe (1), and the sensing probe (1) is fixedly connected to symmetrically distributed limiting blocks (11) that are pressed and matched with the heat-conducting frame (10); The opposite sides of the symmetrically distributed sleeves (4) are fixedly connected to limit frames (12), and a limit groove (13) is provided on a side of the limit frame (12) close to the sensor probe (1). A sliding ring (14) is rotatably connected to the sensor probe (1), and the limit groove (13) is slidably connected to the sliding ring (14) and is in limit fit.

2. A CNC machine tool bus-type temperature acquisition device according to claim 1, characterized in that: The scales of the dial (9) are evenly distributed in the circumferential direction, and the number of scales on the dial (9) is the same as the number of teeth on the gear (7).

3. A CNC machine tool bus-type temperature acquisition device according to claim 2, characterized in that: The maximum operating temperature of the sensing probe (1) is the same as the minimum operating temperature of the thermal block (5).

4. A CNC machine tool bus-type temperature acquisition device according to claim 3, characterized in that: The invention also comprises a connecting block (15), wherein the connecting block (15) is rotatably connected to a side of the sensing probe (1) away from the symmetrically distributed fixing seat (2), and a fixing cylinder (16) is fixedly connected to a side of the fixing seat (2) close to the connecting block (15). A power supply wire (17) and a resistance wire (18) both electrically connected to the sensing probe (1) are fixedly connected to the connecting block (15), and the power supply wire (17) and the resistance wire (18) both pass through the connecting block (15). The power supply wire (17) and the resistance wire (18) are respectively slidably connected to adjacent fixing cylinders (16), and the power supply wire (17) and the resistance wire (18) are respectively fixedly connected to adjacent sleeves (4), and the power supply wire (17) and the resistance wire (18) are both electrically connected to the main line of an external display instrument through wires.

5. A CNC machine tool bus-type temperature acquisition device according to claim 4, characterized in that: A heat insulating sleeve (19) is fixedly connected to a side of the sensing probe (1) away from the symmetrically distributed fixing seat (2); the connecting block (15) is located in the heat insulating sleeve (19); a sliding plate (20) is slidably connected to a side of the heat insulating sleeve (19) away from the sensing probe (1); and elastic members evenly distributed in the circumferential direction are fixedly connected between the sliding plate (20) and the heat insulating sleeve (19).

6. A CNC machine tool bus-type temperature acquisition device according to claim 5, characterized in that: A side of the sleeve (4) close to the sensor probe (1) is provided with exhaust holes (21) distributed in a linear array, and the aperture of the exhaust holes (21) gradually decreases from a side close to the adjacent heat-conducting rod (3) to a side away from the adjacent heat-conducting rod (3).

7. A CNC machine tool bus-type temperature acquisition device according to claim 6, characterized in that: The exhaust hole (21) on one of the sleeves (4) faces a position on the sensing probe (1) close to the gear (7), and the exhaust hole (21) on the other sleeve (4) faces a position on the sensing probe (1) away from the gear (7).

8. A method for using a bus-type temperature acquisition device for a numerically controlled machine tool, characterized in that: Using the CNC machine tool bus-type temperature acquisition device described in claim 7, the specific method of use is as follows: Step 1: firstly, the sensing probe (1) is rotated so that the limiting block (11) is misaligned with the adjacent holes on the heat conducting frame (10), and then the sensing probe (1) and the sliding ring (14) are moved so that the sliding ring (14) moves from the vertical groove of the limiting groove (13) to the horizontal groove; Step 2: Push the sliding ring (14) to move along the horizontal groove of the limiting groove (13), and the sliding ring (14) drives the heat conducting frame (10) to move through the sensing probe (1) and the limiting block (11), insert the sensing probe (1) and the heat conducting frame (10) into the hole to be collected of the CNC machine tool, and then drive the sliding ring (14) to move into the adjacent vertical groove on the limiting groove (13), and limit the sliding ring (14); Step 3: a plurality of fixing seats (2) are respectively installed at different temperature collection areas of the CNC machine tool, so that the rear ends of the plurality of sensor probes (1) and the rear ends of the plurality of heat conducting frames (10) are respectively closely attached to different positions of the CNC machine tool, the sensor probe (1) collects the temperature and converts the temperature into an electrical signal, and finally the electrical signal is transmitted to an external display instrument and displayed as a temperature value. During the operation of the sensor probe (1), the heat insulating sleeve (19) insulates the position of the sensor probe (1) close to the connecting block (15); Step 4: When the sensing probe (1) collects the temperature of the CNC machine tool, the heat conducting frame (10) transfers the high temperature to the adjacent thermistor block (5) through the fixing seat (2) and the adjacent heat conducting rod (3). If the temperature value of the collection area exceeds the maximum working temperature of the sensing probe (1), the thermistor block (5) expands due to the heat and drives the sensing probe (1) to move through the adjacent sleeve (4) and the sliding ring (14), so that the sensing probe (1) gradually moves away from the CNC machine tool; Step 5: The sleeve (4) near the resistance wire (18) drives the rack (6) to move during the movement, and the rack (6) drives the pointer (8) to rotate through the gear (7), so that the scale indicated by the pointer (8) on the dial (9) changes; Step 6: When the temperature value in the collection area is too high and causes the sleeve (4) to move, the symmetrically distributed sleeves (4) respectively drive the power wire (17) and the resistance wire (18) to move along the adjacent fixed cylinder (16), so that the power wire (17) and the resistance wire (18) lose connection with the main line of the external display instrument; Step 7: When the temperature value in the collection area is too high and causes the sleeve (4) to move, the sleeve (4) and the adjacent heat-conducting rod (3) squeeze the gas therebetween, and the gas is discharged to the sensor probe (1) through the exhaust hole (21); Step 8: When the temperature of the CNC machine tool is restored to the working temperature of the sensor probe (1), the heat conducting frame (10) transfers the temperature to the adjacent thermistor block (5) through the fixing seat (2) and the adjacent heat conducting rod (3), the thermistor block (5) contracts and resets and drives the adjacent sleeve (4) to reset, the symmetrically distributed sleeves (4) jointly drive the sliding ring (14) to move and reset, the sliding ring (14) drives the sensor probe (1) to move and reset, the sensor probe (1) resets and continues to collect the temperature of the CNC machine tool; Step 9: During the resetting process of the sleeve (4), the symmetrically distributed sleeves (4) respectively drive the power supply wire (17) and the resistance wire (18) to reset. When the device is no longer in use, the external display is turned off. If the temperature collection position on the CNC machine tool needs to be replaced, the fixing base (2) is removed and the device is collected and reset. Finally, the device is cleaned and maintained so that the device can be installed at the next collection position of the CNC machine tool.

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