CN109357848B - Measuring device and monitoring system of intelligent cutter - Google Patents
Measuring device and monitoring system of intelligent cutter Download PDFInfo
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- CN109357848B CN109357848B CN201811139712.6A CN201811139712A CN109357848B CN 109357848 B CN109357848 B CN 109357848B CN 201811139712 A CN201811139712 A CN 201811139712A CN 109357848 B CN109357848 B CN 109357848B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000010248 power generation Methods 0.000 claims description 37
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000005489 elastic deformation Effects 0.000 claims description 18
- 238000013016 damping Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The measuring device of the intelligent cutter comprises a temperature sensor which is fixed on the working part of the intelligent cutter and is used for measuring the temperature of the intelligent cutter; the cutting force sensor and the vibration sensor are fixed on the clamping part of the intelligent cutter and are respectively used for measuring the cutting force and vibration of the intelligent cutter; the self-generating device is fixedly sleeved on the cutter handle of the intelligent cutter clamping part and is used for supplying power to the self-help measuring device; the signal processing circuit is fixed in the self-generating device and is used for respectively receiving and processing analog signals of the temperature, the cutting force and the vibration of the intelligent cutter, which are correspondingly acquired by the temperature sensor, the cutting force sensor and the vibration sensor, so as to correspondingly convert the analog signals into digital signals of the temperature, the cutting force and the vibration; the transmitting circuit is fixed in the self-generating device and is used for respectively receiving the digital signals converted into temperature, cutting force and vibration by the signal processing circuit and respectively transmitting the digital signals of the temperature, the cutting force and the vibration to the monitoring system in a wireless data transmission mode.
Description
Technical Field
The invention relates to the technical field of intelligent cutter measurement, in particular to a measuring device and a monitoring system of an intelligent cutter.
Background
The monitoring system of the cutter is used for monitoring and analyzing various unstable factors or fault factors in the intelligent cutter and making pre-judgment, and the determination of the various unstable factors or fault factors is the basis for supporting pre-judgment by measuring the performance of parameters such as the temperature, cutting force, vibration and the like of the intelligent cutter through the measuring device. It is known that the parameter performance of the intelligent tool temperature, cutting force, vibration, etc. determines the main index of whether the intelligent tool is in a stable state or a fault state. And the parameters of the intelligent cutter are measured when the intelligent cutter is in a use state (the intelligent cutter is in a running working state). While measuring intelligent tools in use has the following problems:
firstly, when the intelligent cutter is used for measuring, a measurer cannot measure parameters outside the intelligent cutter rotating at a high speed, and the measurer cannot extend a measuring instrument and the like into the intelligent cutter rotating at a high speed for measuring the parameters, so that obviously, the mode is not feasible;
Secondly, install measuring device on intelligent cutter before using, intelligent cutter is in the parameter measurement again under the state of using, firstly, because intelligent cutter is in under the state of using, these measuring device of current unable parameter data that will measure send out. Second, these existing measuring devices cannot supply power to the measuring device itself, and under the continuous rotation of the smart tool, the measuring device cannot be powered by a power supply, so that the measurement of parameters cannot be completed.
The traditional power supply mode is to supply power for a storage battery arranged on a measuring device, but is limited by factors such as the service life of the battery, inconvenient replacement, damage to the rotation balance of a cutter, and the like, and cannot be well applied. It is known that, before use, the measuring device is mounted on the intelligent cutter, and the intelligent cutter is in a use state and then performs parameter measurement, which cannot be realized by the conventional technology.
Disclosure of Invention
The invention aims at: aiming at the defects of the prior art, the measuring device and the monitoring system of the intelligent cutter can measure and monitor the intelligent cutter in the use state.
According to one aspect, the invention provides a measuring device for an intelligent cutter, the measuring device comprises: the temperature sensor is fixedly arranged on the working part of the intelligent cutter and is used for measuring the temperature of the intelligent cutter; the cutting force sensor and the vibration sensor are fixedly arranged on the clamping part of the intelligent cutter and are respectively used for measuring the cutting force and vibration of the intelligent cutter; the self-generating device is fixedly sleeved on a cutter handle of the clamping part of the intelligent cutter and is used for supplying power to the measuring device; the signal processing circuit is fixedly arranged in the self-generating device and is used for respectively receiving and processing analog signals of the temperature sensor, the cutting force and the vibration of the intelligent cutter, which are correspondingly acquired by the temperature sensor, the cutting force sensor and the vibration sensor, so as to correspondingly convert the analog signals into digital signals of the temperature, the cutting force and the vibration; the sending circuit is fixedly arranged in the self-generating device and is used for respectively receiving the digital signals converted into temperature, cutting force and vibration by the signal processing circuit and sending the digital signals converted into the temperature, the cutting force and the vibration by the signal processing circuit to a monitoring system for analyzing and monitoring the intelligent cutter in a wireless data transmission mode.
The cutting force sensor mainly comprises an elastic deformation body and strain gauges, wherein the elastic deformation body is of a cylindrical structure, the elastic deformation body is fixedly sleeved on a cutter handle where the intelligent cutter clamping part is located, and a plurality of groups of strain gauges are circumferentially distributed and adhered in the body of the elastic deformation body.
Further, each group of strain gauges is divided into two, one strain gauge is parallel to the axis of the intelligent cutter clamping part cutter handle, and the other strain gauge is arranged at an included angle of 30-60 degrees with the axis of the intelligent cutter clamping part cutter handle.
The self-generating device comprises an annular body, a power generation assembly and a control circuit, wherein the annular body is fixedly sleeved on a cutter handle of the intelligent cutter clamping part, and a hollow annular inner cavity is formed in the annular body; the power generation assembly mainly comprises a magnetic rod fixing bracket, a magnetic rod and a power generation coil, wherein one end of the magnetic rod fixing bracket is fixedly connected with the inner wall of the annular inner cavity, and the other end of the magnetic rod fixing bracket is movably connected with one end of the magnetic rod; the pair of power generation coils are fixedly arranged in the annular inner cavity and are positioned on two sides of the magnetic rod; when the intelligent cutter rotates, the cutter handle of the intelligent cutter clamping part drives the annular body, the magnetic rod fixing support and the power generation coil in the annular body to synchronously rotate, the magnetic rod is always in a vertically downward state relative to the movable connection position of the magnetic rod and the magnetic rod fixing support under the action of gravity, the magnetic rod fixing support rotates relative to the movable connection position of the magnetic rod and the magnetic rod fixing support, and the power generation coil moves circularly relative to the magnetic rod, so that the power generation coil cuts magnetic lines of force of the magnetic rod, and current is generated at two ends of the power generation coil; the current generated at the two ends of the power generation coil is converted into a direct current power supply for supplying power to the measuring device after passing through the rectifying circuit, the filtering circuit and the voltage stabilizing circuit.
Further, the magnetic rod fixing support is fixedly arranged on the inner side inner wall surface or the outer side inner wall surface in the annular inner cavity of the annular body.
Further, the generating coil is fixedly installed on the inner side inner wall surface or the outer side inner wall surface in the annular inner cavity of the annular body through a coil installation frame.
Further, the number of the power generation components of the self-generating device is plural, the power generation components of each self-generating device are circumferentially and uniformly distributed in the annular body, the power generation components of each self-generating device correspond to a control circuit of the self-generating device, and the power generation components of the self-generating device and the control circuit of the self-generating device are alternately and uniformly distributed in the annular body.
Further, the self-generating device further comprises a super capacitor circuit, the super capacitor circuit is fixedly arranged in the self-generating device, the control circuit controls the super capacitor circuit to charge or to cut off power, and when the measuring device loses power, the super capacitor circuit discharges to supply power for the measuring device.
Furthermore, at least two pairs of damping coils are also arranged in the annular inner cavity of the annular body of the self-generating device, and each pair of damping coils is arranged on two sides of the magnetic rod; when the control circuit of the self-generating device detects that the super capacitor circuit is charged, and the measuring device is in an overvoltage state, the control circuit of the self-generating device controls the damping coil to be connected into the generating component of the self-generating device, and consumes electric energy generated by the generating component of the self-generating device.
On the other hand, the monitoring system of the intelligent cutter comprises a monitoring system for monitoring and analyzing the cutter and also comprises a measuring device of the intelligent cutter, wherein the monitoring system receives digital signals of temperature, cutting force and vibration respectively sent out by the sending circuit in a wireless data transmission mode through a receiving circuit matched with the sending circuit.
The beneficial effects of the invention are as follows: the invention relates to a measuring device and a monitoring system of an intelligent cutter, which can measure and monitor the intelligent cutter in a use state.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a functional block diagram of the present invention.
Fig. 2 is a schematic view of the structure of the cutting force sensor of the present invention.
Fig. 3 is a schematic structural view of the self-generating device in the present invention.
Fig. 4 is a block diagram of a power generation coil, a damping coil, a super capacitor circuit, and a control circuit in a power generation device.
Fig. 5 is a schematic installation diagram of the measuring device.
The meaning of the symbols in the figures: 1-a temperature sensor; 2-a cutting force sensor; 3-a vibration sensor; 4-an intelligent cutter; 5-a blade; 6, a knife handle; 7-elastic deformation; 8-strain gage; 9-a keyway structure; 10-a self-generating device; 11-a magnetic rod fixing bracket and 12-a magnetic rod; 13-generating coils; 14. 31-coil mounting rack; 15-a damping coil; 16-a signal processing circuit; 17-a transmitting circuit; 18-a super capacitor circuit; 19-a power generation assembly; 20-a control circuit; 21-a voltage detection circuit; 22-a capacitance voltage detection circuit; 23-a rectifying circuit; 24-a filter circuit; 25-a voltage stabilizing circuit; 26-a receiving circuit; 27-a monitoring system; 28-a circuit board; 29-a circuit board fixing bracket; 30-a bolt; 32-a charge-discharge management circuit.
Detailed Description
Example 1
See fig. 1 to 5: the invention relates to a measuring device and a monitoring system of an intelligent cutter. It can measure, monitor intelligent cutter 4 under intelligent cutter 4 is in the state of using. The intelligent cutter 4 is composed of a clamping part and a working part. The clamping part and the working part of the cutter with the integral structure are both arranged on the cutter body; the working part (the cutter tooth or the cutter blade 5) of the cutter with the tooth inlaid structure is inlaid on the cutter body. The clamping part of the intelligent cutter is provided with two types, namely a hole and a handle. The tool with holes is sleeved on a main shaft or a mandrel of a machine tool by means of an inner hole, and torque moment is transmitted by means of an axial key or an end face key, such as a cylindrical milling cutter, a sleeve type face milling cutter and the like. The tool with the handle is generally provided with three types of rectangular handles, cylindrical handles and conical handles. Turning tools, planing tools and the like are generally rectangular handles; the conical handle bears axial thrust by means of taper and transmits torque by means of friction force; cylindrical handles are generally used for smaller tools such as twist drills and end mills, and transmit torque during cutting by means of friction forces generated during clamping. The shank portion of many shank tools is made of low alloy steel, while the working portion is butt welded from high speed steel. The working part of the tool is the part for generating and treating the cutting chips and comprises structural elements such as a cutting edge, a structure for breaking or rolling the cutting chips, a space for removing or storing the cutting chips, a channel for cutting fluid and the like. Some working parts of the cutter are cutting parts, such as turning tools, planing tools, boring tools, milling cutters and the like; some working portions of the tool include cutting and alignment portions such as drills, reamers, inner surface broaches, taps, and the like. The cutting portion serves to remove chips with the blade and the alignment portion serves to smooth the machined surface and guide the tool.
In one aspect, a measuring device for a smart tool 4, the measuring device comprising:
The temperature sensor 1 is fixedly arranged on the working part of the intelligent cutter 4 and is used for measuring the temperature of the intelligent cutter 4. To ensure the effectiveness of the temperature measurement, a hole is drilled in the place closest to the knife edge, the temperature sensor 1 is mounted in the hole by means of a fixture (e.g. a set screw), and the measuring part of the temperature sensor 1 can preferably be passed through the hole to engage the non-cutting side of the blade 5 (the side of the blade 5 engaging the knife). The outer surface of the intelligent cutter is provided with a lead wire groove (arranged according to actual requirements and wiring common sense of an electric wire groove) from the position where the temperature sensor 1 is installed to the position of the self-generating device 10, and the lead wire is used for laying a lead wire for connecting the temperature sensor 1 with a signal processing circuit 16 in the self-generating device 10 and then is sealed by high-temperature silica gel.
The cutting force sensor 2 and the vibration sensor 3 are fixedly arranged on the clamping part of the intelligent cutter 4 and are respectively used for measuring the cutting force and vibration of the intelligent cutter 4. The cutting force sensor 2 mainly comprises an elastic deformation body 7 and strain gauges 8, wherein the elastic deformation body 7 is of a cylindrical structure, the elastic deformation body 7 is fixedly sleeved on a cutter handle 6 where the clamping part of the intelligent cutter 4 is located, and a plurality of groups of strain gauges 8 are uniformly distributed and adhered in the circumferential direction of the elastic deformation body 7. The matching surface of the elastic deformation body 7 and the knife handle 6 where the clamping part of the intelligent knife 4 is located is provided with a key slot structure 9 (an axial key slot formed in the inner surface of an inner hole on the shaft of the elastic deformation body 7 and an axial bulge formed in the outer surface of the knife handle 6 where the clamping part of the intelligent knife 4 is located) which is used for tightly fixing and sleeving the elastic deformation body 7 on the knife handle 6 where the clamping part of the intelligent knife 4 is located so as to improve the accuracy of measurement and further lock the knife handle by a screw; preferably, each set of strain gauges 8 is two, one strain gauge 8 is parallel to the axis of the clamping portion handle 6 of the intelligent cutter 4 (i.e. parallel relation between the faces and the lines is achieved), and the other strain gauge 8 is arranged at an included angle of 30-60 ° (e.g. 30 °, 45 °, 60 °, preferably 45 °) with the axis of the clamping portion handle 6 of the intelligent cutter 4 (i.e. an included angle arrangement relation between one face and one line is achieved). By means of this arrangement of the strain gauges 8, a measurement of the chip forces and moments during cutting is achieved. In this embodiment, four groups of strain gauges 8 are provided, wherein the four strain gauges 8 are respectively parallel to the axis of the clamping portion of the shank 6 of the intelligent cutter 4 and are connected together in a full-bridge manner, and the other four strain gauges 8 are respectively arranged at 45 ° with the axis of the clamping portion of the shank 6 of the intelligent cutter 4 and are connected together in a full-bridge manner. The cutting force sensor 2 has high sensitivity, linearity and good temperature compensation characteristic. When the elastic deformation body 7 is stressed, the physical size of the elastic deformation body 7 changes, the strain gauge 8 adhered to the elastic deformation body 7 synchronously changes, the resistance value of the strain gauge 8 changes, and the voltage output in the bridge synchronously changes through the change of the resistance, so that the size of the cutting force is measured; the vibration sensor 3 is mounted in a radial drill hole formed in a tool shank 6 of the clamping portion of the intelligent tool 4 through a fixing piece (for example, a fixing screw), and in this embodiment, vibration parameters measured by the vibration sensor 3 are measured by a piezoelectric acceleration sensor.
The self-generating device 10 is fixedly sleeved on the knife handle 6 of the clamping part of the intelligent knife 4 and is used for supplying power to the measuring device. The self-generating device 10 includes a ring body, a power generation assembly 19, and a control circuit 20 (e.g., a PLC programmable logic control circuit, an embedded microprocessor, a PC, etc.).
The annular body is fixedly sleeved on the knife handle 6 of the clamping part of the intelligent knife 4 (the annular body can be fixed by a screw, a bolt 30 or the knife handle 6 of the clamping part of the intelligent knife 4 is fixedly sleeved by interference fit and the like), a hollow annular inner cavity is formed in the annular body, and the annular body is made of a magnetic shielding material, preferably an aluminum material, so that a good magnetic shielding effect is achieved;
The power generation assembly 19 mainly comprises a magnetic rod fixing bracket 11, a magnetic rod 12 and a power generation coil 13, wherein one end of the magnetic rod fixing bracket 11 is fixedly connected with the inner wall of the annular inner cavity, and the other end of the magnetic rod fixing bracket is movably connected with one end of the magnetic rod 12 (for example, the movable connection is realized through a pin shaft); in this embodiment, the pair of power generating coils 13 are fixedly installed in the annular inner cavity, and the pair of power generating coils 13 are located at two sides of the magnetic rod 12; when the intelligent cutter 4 rotates, the cutter handle 6 of the clamping part of the intelligent cutter 4 drives the annular body and the magnetic rod fixing support 11 and the generating coil 13 therein to synchronously rotate, the magnetic rod 12 is always in a vertically downward state relative to the movable connection position of the magnetic rod 12 and the magnetic rod fixing support 11 under the action of gravity (the reason that the movable connection position of the magnetic rod 12 and the magnetic rod fixing support 11 is always in the vertically downward state is positioned on one end part of the magnetic rod 12), the magnetic rod fixing support 11 rotates relative to the movable connection position of the magnetic rod 12 and the magnetic rod fixing support 11, and the generating coil 13 moves circumferentially relative to the magnetic rod 12, so that the generating coil 13 cuts magnetic lines of force of the magnetic rod 12 and current is generated at two ends of the generating coil 13;
The current generated at both ends of the power generation coil 13 is converted into a dc power supply for supplying power to the measuring device through the rectifying circuit 23, the filter circuit 24 and the voltage stabilizing circuit 25.
In this embodiment, during installation, the self-generating device 10 is fixedly sleeved on the tool shank 6 of the clamping part of the intelligent tool 4, the cutting force sensor 2 is located (clung to) on the tool shank 6 of the clamping part of the intelligent tool 4 where the right side of the self-generating device 10 is located, so that the connection of wires between the cutting force sensor 2 and the self-generating device 10 is facilitated, and the vibration sensor 3 is located on the tool shank 6 of the clamping part of the intelligent tool 4 where the matching surface between the cutting force sensor 2 and the tool shank 6 of the clamping part of the intelligent tool 4 is located, so that the vibration sensor 3 is conveniently connected with the wires of the self-generating device 10 through the cutting force sensor 2.
The signal processing circuit 16 is fixedly installed in the self-generating device 10, and is configured to receive and process analog signals of the temperature sensor 1, the cutting force sensor 2, and the vibration sensor 3, which are acquired correspondingly by the intelligent tool 4, so as to convert the analog signals into digital signals of the temperature, the cutting force, and the vibration correspondingly, that is, the analog signals of the temperature sensor 1, the cutting force sensor 2, and the vibration sensor 3, which are acquired correspondingly by the intelligent tool 4, sequentially pass through an amplifying circuit, a filtering circuit, and an analog-to-digital conversion circuit in the signal processing circuit 16, and then obtain digital signals of the corresponding temperature, the cutting force, and the vibration;
The transmitting circuit 17 (which can be realized by a conventional circuit or an integrated transmitting module by a person skilled in the art) is fixedly installed in the self-generating device 10, and is configured to receive the digital signals converted into the temperature, the cutting force and the vibration by the signal processing circuit 16, and can send the digital signals converted into the temperature, the cutting force and the vibration by the signal processing circuit 16 to the monitoring system 27 for analyzing and monitoring the intelligent cutter 4 in a wireless data transmission manner, respectively.
Preferably, the magnetic rod fixing support 11 is fixedly arranged on the outer inner wall surface in the annular inner cavity of the annular body. Preferably, the generating coil 13 is fixedly mounted on the outer inner wall surface in the annular inner cavity of the annular body through a coil mounting frame 14. In high-speed rotation, the steadiness of the root of the magnetic rod fixing support 11 (the root of the magnetic rod fixing support 11 refers to the joint of the magnetic rod fixing support 11 and the outer side inner wall surface in the annular inner cavity of the annular body) and the root of the coil mounting frame 14 (the root of the coil mounting frame 14 refers to the joint of the coil mounting frame 14 and the outer side inner wall surface in the annular inner cavity of the annular body) can be better guaranteed, and the service life of the measuring device is prolonged.
Preferably, the plurality of power generating components 19 of the self-generating device 10 are circumferentially and uniformly distributed in the annular body, the power generating component 19 of each self-generating device 10 is correspondingly formed by a control circuit 20 of the self-generating device 10, and the power generating components 19 of the self-generating device 10 and the control circuit 20 of the self-generating device 10 are alternately and uniformly distributed in the annular body. In this embodiment, three power generating assemblies 19 of the power generating device 10 are arranged at an included angle of 120 ° with each other, and three control circuits 20 of the power generating device 10 and the power generating assemblies 19 of the power generating device 10 are alternately and uniformly distributed on the outer side inner wall surface in the annular inner cavity of the annular body. The measuring device is prevented from being arranged on the cutter to influence the dynamic balance in the rotation process of the cutter.
Preferably, the self-generating device 10 further includes a super capacitor circuit 18, the super capacitor circuit 18 is fixedly installed in the self-generating device 10, the control circuit 20 controls the super capacitor circuit to charge or to cut off power through the charge and discharge management circuit 32, and when the measuring device loses power, the control circuit 20 controls the super capacitor circuit to discharge through the charge and discharge management circuit 32 to supply power to the measuring device. In this embodiment, although the super capacitor circuit 18 is a conventional capacitor circuit (the super capacitor may be CHP-5R5L 256R-PC), when the intelligent cutter 4 rotates from high speed to stop rotating, the super capacitor circuit 18 is matched with the measuring device, so that the measuring time of the measuring device can be prolonged, on one hand, the stability of the measuring device is improved, and on the other hand, the intermittent rotation process of the intelligent cutter 4 (the intermittent rotation process of the intelligent cutter 4 refers to the use of the intelligent cutter 4, the intelligent cutter 4 rotates at high speed for a period of time, then stops rotating for a period of time, and finally rotates at high speed for a period of time), which is beneficial to analyzing and restoring the actual use process of the intelligent cutter 4.
Further preferably, at least two pairs of damping coils 15 (at least comprising a pair of coils for use when the intelligent cutter rotates forward and a pair of coils for use when the intelligent cutter rotates backward) are further installed in the annular inner cavity of the annular body of the self-generating device 10, the specific installation positions of the damping coils 15 are determined according to actual needs, and each pair of damping coils 15 is uniformly distributed on two sides of the magnetic rod 12; when the control circuit 20 of the self-generating device 10 detects that the super capacitor circuit 18 is charged, and the measuring device is in an overvoltage state (which can be realized by a person skilled in the art through a conventional circuit), the control circuit 20 of the self-generating device 10 controls the damping coil 15 to be connected to the generating component 19 of the self-generating device 10, so as to consume the electric energy generated by the generating component 19 of the self-generating device 10 (which can be realized by a person skilled in the art through a conventional circuit), and ensure the stability of the voltage in the generating component 19. See fig. 4: in the present embodiment, the power generation coil 13 cuts the magnetic lines of force of the magnetic rod 12 to generate electric energy, and the electric energy passes through the rectifying circuit 23, the filter circuit 24, and the voltage stabilizing circuit 25 to obtain direct current, so that on the one hand, an operating power is supplied to the control circuit, and on the other hand, the control circuit turns on the charge/discharge management circuit 32 (the charge/discharge management circuit 32 is turned on or off) to charge the supercapacitor circuit 18. The voltage detection circuit 21 detects whether the voltage at two ends of the power generation coil 13 exceeds the preset voltage value in advance in the control circuit, the preset voltage value is exceeded, overvoltage occurs, meanwhile, the capacitor voltage detection circuit 22 detects whether the electric energy of the super capacitor circuit 18 exceeds the preset electric energy value in advance in the control circuit, the fact that the electric energy exceeds the preset electric energy value indicates that the charging circuit is full of electric energy, the control circuit controls the charge and discharge management circuit 32 to be disconnected, after the two conditions are met (the overvoltage occurs and the charging circuit is full of electric energy), the control circuit controls the damping coil 15 to be connected (the connection of the damping coil 15 is selected according to the positive and negative directions of an actual intelligent cutter), redundant electric energy generated by the power generation coil 13 is consumed (the damping coil 15 is connected into the power generation coil 13, and the connection mode for consuming the electric energy in the power generation coil 13 is the existing mature technical means), the two conditions are not met, and the control circuit does not connect the damping coil 15. The control circuit makes such simple control and judgment, among other things, is a well-established technology.
On the other hand, the monitoring system of the intelligent cutter 4 comprises a monitoring system 27 (for example, a microprocessor, a PC, etc.) for monitoring and analyzing the cutter, and further comprises a measuring device of the intelligent cutter 4, wherein the monitoring system 27 receives a digital signal of temperature, cutting force and vibration sent by the sending circuit 17 in a wireless data transmission manner through a receiving circuit 26 (the receiving circuit 26 can be realized by a conventional circuit or an integrated receiving module by a person skilled in the art) matched with the sending circuit 17, and the digital signal is used as basic data for monitoring, analyzing and sending an alarm by the monitoring system 27.
The signal processing circuit 16, the control circuit 20, the amplifying circuit, the filter circuit, the analog-to-digital conversion circuit, the super capacitor circuit 18, the control circuit 20, the voltage detection circuit 21, the capacitor voltage detection circuit 22, the rectifying circuit 23, the filter circuit 24, the voltage stabilizing circuit 25, the transmitting circuit 17, the receiving circuit 26, and the charge/discharge management circuit 32 are all integrated on a circuit board 28, and the circuit board 28 is fixed to the outer inner wall surface in the annular cavity of the annular body by a circuit board fixing bracket 29.
Example 2
The other structure of this embodiment 2 is the same as that of embodiment 1, except that: the magnetic rod fixing support is fixedly arranged on the inner wall surface of the inner side in the annular inner cavity of the annular body.
Example 3
The other structure of this embodiment 3 is the same as that of embodiment 1, except that: the generating coil is fixedly arranged on the inner wall surface of the inner side of the annular inner cavity of the annular body through a coil mounting frame.
Example 4
The other structure of this embodiment 4 is the same as that of embodiment 1 except that: the magnetic rod fixing support is fixedly arranged on the inner side inner wall surface of the annular body, the coil mounting frame is fixedly arranged on the inner side inner wall surface of the annular body, or the magnetic rod fixing support is fixedly arranged on the inner side inner wall surface of the annular body, and the coil mounting frame is fixedly arranged on the inner side inner wall surface of the annular body.
The technical solutions of the above embodiments are only for illustrating the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical scheme can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a measuring device of intelligent cutter which characterized in that: the measuring device includes: the temperature sensor is fixedly arranged on the working part of the intelligent cutter and is used for measuring the temperature of the intelligent cutter; the cutting force sensor and the vibration sensor are fixedly arranged on the clamping part of the intelligent cutter and are respectively used for measuring the cutting force and vibration of the intelligent cutter; the self-generating device is fixedly sleeved on a cutter handle of the clamping part of the intelligent cutter and is used for supplying power to the measuring device; the signal processing circuit is fixedly arranged in the self-generating device and is used for respectively receiving and processing analog signals of the temperature sensor, the cutting force and the vibration of the intelligent cutter, which are correspondingly acquired by the temperature sensor, the cutting force sensor and the vibration sensor, so as to correspondingly convert the analog signals into digital signals of the temperature, the cutting force and the vibration; the transmitting circuit is fixedly arranged in the self-generating device and is used for respectively receiving the digital signals converted into temperature, cutting force and vibration by the signal processing circuit and transmitting the digital signals converted into the temperature, the cutting force and the vibration by the signal processing circuit to a monitoring system for analyzing and monitoring the intelligent cutter in a wireless data transmission mode;
The cutting force sensor mainly comprises an elastic deformation body and strain gauges, wherein the elastic deformation body is of a cylindrical structure, the elastic deformation body is fixedly sleeved on a cutter handle where the intelligent cutter clamping part is located, and a plurality of groups of strain gauges are circumferentially distributed and stuck in the body of the elastic deformation body;
each group of strain gauges is two, one strain gauge is parallel to the axis of the intelligent cutter clamping part cutter handle, and the other strain gauge is arranged at an included angle of 30-60 degrees with the axis of the intelligent cutter clamping part cutter handle;
The self-generating device comprises an annular body, a power generation assembly and a control circuit, wherein the annular body is fixedly sleeved on a cutter handle of the intelligent cutter clamping part, and a hollow annular inner cavity is formed in the annular body; the power generation assembly mainly comprises a magnetic rod fixing bracket, a magnetic rod and a power generation coil, wherein one end of the magnetic rod fixing bracket is fixedly connected with the inner wall of the annular inner cavity, and the other end of the magnetic rod fixing bracket is movably connected with one end of the magnetic rod; the pair of power generation coils are fixedly arranged in the annular inner cavity and are positioned on two sides of the magnetic rod; when the intelligent cutter rotates, the cutter handle of the intelligent cutter clamping part drives the annular body, the magnetic rod fixing support and the power generation coil in the annular body to synchronously rotate, the magnetic rod is always in a vertically downward state relative to the movable connection position of the magnetic rod and the magnetic rod fixing support under the action of gravity, the magnetic rod fixing support rotates relative to the movable connection position of the magnetic rod and the magnetic rod fixing support, and the power generation coil moves circularly relative to the magnetic rod, so that the power generation coil cuts magnetic lines of force of the magnetic rod, and current is generated at two ends of the power generation coil; the current generated at the two ends of the power generation coil is converted into a direct current power supply for supplying power to the measuring device after passing through the rectifying circuit, the filtering circuit and the voltage stabilizing circuit.
2. The intelligent cutter measurement device according to claim 1, wherein: the magnetic rod fixing support is fixedly arranged on the inner side inner wall surface or the outer side inner wall surface in the annular inner cavity of the annular body.
3. The intelligent cutter measurement device according to claim 1, wherein: the generating coil is fixedly arranged on the inner side inner wall surface or the outer side inner wall surface in the annular inner cavity of the annular body through a coil mounting frame.
4. The intelligent cutter measurement device according to claim 1, wherein: the power generation assembly of the self-generating device is a plurality of, circumferentially and uniformly distributed in the annular body, each power generation assembly of the self-generating device corresponds to a control circuit of the self-generating device, and the power generation assembly of the self-generating device and the control circuit of the self-generating device are alternately and uniformly distributed in the annular body.
5. The intelligent cutter measurement device according to claim 1, wherein: the self-generating device further comprises a super capacitor circuit, the super capacitor circuit is fixedly arranged in the self-generating device, the control circuit controls the super capacitor circuit to charge or cut off power, and when the measuring device loses power, the super capacitor circuit discharges to supply power for the measuring device.
6. The intelligent cutter measurement device according to claim 5, wherein: at least two pairs of damping coils are also arranged in the annular inner cavity of the annular body of the self-generating device, and each pair of damping coils is arranged on two sides of the magnetic rod; when the control circuit of the self-generating device detects that the super capacitor circuit is charged, and the measuring device is in an overvoltage state, the control circuit of the self-generating device controls the damping coil to be connected into the generating component of the self-generating device, and consumes electric energy generated by the generating component of the self-generating device.
7. A monitoring system of intelligent cutter, includes the monitoring system that is used for cutter control and analysis, its characterized in that: the intelligent cutter measuring device comprises the intelligent cutter measuring device as claimed in any one of claims 1 to 6, wherein the monitoring system receives digital signals of temperature, cutting force and vibration respectively sent by the sending circuit in a wireless data transmission mode through a receiving circuit matched with the sending circuit.
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| CN111618357B (en) * | 2020-04-21 | 2022-12-16 | 深圳精匠云创科技有限公司 | Wireless data acquisition device and steel rail milling cutter equipment with same |
| TWI799044B (en) * | 2021-12-29 | 2023-04-11 | 財團法人工業技術研究院 | Tool holder having force sensors |
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