CN110470204B - Method for automatically identifying knife handle through power coil induction detection - Google Patents
Method for automatically identifying knife handle through power coil induction detection Download PDFInfo
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- CN110470204B CN110470204B CN201910744939.1A CN201910744939A CN110470204B CN 110470204 B CN110470204 B CN 110470204B CN 201910744939 A CN201910744939 A CN 201910744939A CN 110470204 B CN110470204 B CN 110470204B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
- B23P11/027—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold for mounting tools in tool holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
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- General Induction Heating (AREA)
Abstract
The invention provides a method for automatically identifying a knife handle through power coil induction detection, and belongs to the field of electromagnetic induction heating. The technical scheme of the invention is as follows: determining the frequency and time of the optimal heating current of the power coils corresponding to different cutter handle sizes, and compiling and storing a corresponding control program according to the determined result; starting heating by a hot loading machine; detecting the waveform peak value of alternating current at the moment of electrifying the power coil; automatically judging the size of the heated cutter handle according to the waveform peak value; and calling a corresponding stored control program to control the power coil to heat the tool shank at the corresponding frequency and time of the optimal heating current according to the judged size of the heated tool shank. The size of the heated knife handle can be automatically judged by identifying the peak value of the current waveform, the step of manually selecting the size of the knife handle is omitted, the operation time is greatly saved, the heating is more accurate, the situation that the knife handle is overheated is avoided, and the service life of the knife handle is prolonged.
Description
Technical Field
The invention relates to the field of electromagnetic induction heating, in particular to a method for automatically identifying a knife handle through power coil induction detection.
Background
The principle of the thermal shrinkage cutter handle is as follows: the cutter is clamped strongly and accurately by utilizing the expansion and contraction of materials and the interference fit of the inner hole of the clamping part of the cutter handle and the excircle of the cutter. In recent years, a hot charging machine manufactured by utilizing an induction heating principle is more and more favored by people in the process of assembling and disassembling a hot charging knife handle, obviously accelerates the assembling and disassembling process, is more efficient and easy to operate, and is widely popular.
Due to the fact that the sizes of the tool shanks are different and have larger difference, in the hot assembling and disassembling process, the energy required by the tool shanks of different sizes is different, too low energy can cause hot assembling and disassembling failure, and too high energy can cause the temperature of the tool shank to be too high to exceed the bearing capacity of materials to cause tool shank failure. The existing scheme is as follows: the hot-assembly tool handles with approximate sizes are divided into a group, the frequency and time of alternating current input into the power coil of each group are set to be a program, and the energy obtained by the tool handles is controlled by selecting different programs. The method has the problems of complex operation and high temperature of the tool shank caused by wrong selection.
Namely: in the prior art, the problem that the size of a knife handle cannot be automatically identified exists when a cutter is assembled and disassembled by a hot assembling device.
Disclosure of Invention
The invention aims to provide a method for automatically identifying a knife handle through power coil induction detection, which can automatically judge the size of the heated knife handle by identifying the peak value of a current waveform.
The invention solves the technical problem, and adopts the technical scheme that: the method for automatically identifying the knife handle through power coil induction detection comprises the following steps:
step 1, determining the frequency and time of the optimal heating current of the power coils corresponding to different cutter handle sizes, and compiling and storing a corresponding control program according to the determined result;
step 2, starting and heating the hot charging machine;
step 3, detecting the waveform peak value of the alternating current at the moment when the power coil is electrified;
step 4, automatically judging the size of the heated cutter handle according to the waveform peak value;
and 5, calling a stored corresponding control program to control the power coil to heat the tool handle at the corresponding frequency and time of the optimal heating current according to the judged size of the heated tool handle.
Specifically, in step 1, when determining the frequency and time of the optimal heating current of the power coil corresponding to different tool holder sizes, the method specifically includes the following steps:
step 101, establishing an excel table;
102, respectively measuring and recording inductance values of the empty coils, the empty tool handles in various sizes and the tool handles in various sizes by using a digital bridge, and recording the inductance values in the excel table;
103, manually setting the frequency and time of the heating current of the power coil, and determining the frequency and time of the optimal heating current corresponding to different knife handle sizes after multiple tests.
Further, in step 1, the writing of the corresponding control program is stored in a memory of the control-end microprocessor.
Specifically, in step 3, the waveform peak of the alternating current at the instant when the power coil is energized is detected by the high-speed AD sampling circuit.
Furthermore, a high-speed AD sampling chip in the high-speed AD sampling circuit converts the analog signal of the detected waveform peak value into a digital signal and then sends the digital signal to a control end microprocessor.
Specifically, the step 4 specifically includes the following steps:
step 401, dividing the size of the tool shank into several ranges of phi 3-phi 5mm, phi 6-phi 12mm, phi 14-phi 16mm, phi 18-phi 20mm and phi 25-phi 32 mm;
step 402, determining a current waveform peak value corresponding to the minimum size and the maximum size in each size range;
step 403, obtaining the current waveform peak ranges respectively corresponding to phi 3-phi 5mm, phi 6-phi 12mm, phi 14-phi 16mm, phi 18-phi 20mm and phi 25-phi 32 mm;
step 404, when heating is started, converting the peak value of the current oscillogram of the power coil into a digital signal after passing through the high-speed AD sampling circuit, and sending the digital signal to the control end microprocessor;
step 405, after the control end microprocessor receives the digital signal, calling a corresponding control program in the memory to automatically identify the size of the handle.
The method has the advantages that the size of the heated knife handle is automatically judged by identifying the peak value of the current waveform through the method for automatically identifying the knife handle through the power coil induction detection, the step of manually selecting the size of the knife handle is omitted, the operation time is greatly saved, the heating is more accurate, the situation that the knife handle is overheated is avoided, and the service life of the knife handle is prolonged.
Drawings
FIG. 1 is a flow chart of a method for automatically identifying a knife handle by power coil induction detection according to the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.
The invention discloses a method for automatically identifying a knife handle by power coil induction detection, which is shown in a flow chart of the method in figure 1, wherein the method comprises the following steps:
step 1, determining the frequency and time of the optimal heating current of the power coils corresponding to different cutter handle sizes, and writing and storing a corresponding control program according to the determined result.
And 2, starting heating of the hot charging machine.
And 3, detecting the waveform peak value of the alternating current at the moment when the power coil is electrified.
And 4, automatically judging the size of the heated cutter handle according to the waveform peak value.
And 5, calling a stored corresponding control program to control the power coil to heat the tool handle at the corresponding frequency and time of the optimal heating current according to the judged size of the heated tool handle.
Therefore, the size of the heated knife handle can be automatically judged by identifying the peak value of the current waveform, the step of manually selecting the size of the knife handle is omitted, the operation time is greatly saved, the heating is more accurate, the situation that the knife handle is overheated is avoided, and the service life of the knife handle is prolonged.
Examples
The method for automatically identifying the knife handle through power coil induction detection comprises the following steps:
step 1, determining the frequency and time of the optimal heating current of the power coils corresponding to different cutter handle sizes, and writing and storing a corresponding control program according to the determined result.
When determining the frequency and time of the optimal heating current of the power coil corresponding to different knife handle sizes, the method specifically comprises the following steps:
step 101, establishing an excel table;
102, respectively measuring and recording inductance values of the empty coils, the empty tool handles in various sizes and the tool handles in various sizes by using a digital bridge, and recording the inductance values in the excel table;
103, manually setting the frequency and time of the heating current of the power coil, and determining the frequency and time of the optimal heating current corresponding to different knife handle sizes after multiple tests.
According to the working condition, a corresponding control program is written and preferably stored in a memory of the control end microprocessor.
And 2, starting heating of the hot charging machine.
And 3, detecting the waveform peak value of the alternating current at the moment when the power coil is electrified.
Among them, it is preferable that the waveform peak of the alternating current at the moment of energization of the power coil is detected by a high-speed AD sampling circuit according to the detection requirement.
In addition, the high-speed AD sampling circuit generally includes a high-speed ADC sampling chip, the model of the high-speed AD sampling chip is selectable, in order to efficiently collect the current waveform peak value and save the investment cost, the model of the high-speed AD sampling chip in this example is selected as ADs8681, and the high-speed AD sampling chip in the high-speed AD sampling circuit converts the analog signal of the detected waveform peak value into a digital signal and then sends the digital signal to the control-end microprocessor.
And 4, automatically judging the size of the heated cutter handle according to the waveform peak value.
Preferably, the step 4 specifically comprises the following steps:
step 401, the size of the tool shank can be divided into several ranges of phi 3-phi 5mm, phi 6-phi 12mm, phi 14-phi 16mm, phi 18-phi 20mm and phi 25-phi 32 mm;
step 402, determining a current waveform peak value corresponding to the minimum size and the maximum size in each size range;
step 403, obtaining the current waveform peak ranges respectively corresponding to phi 3-phi 5mm, phi 6-phi 12mm, phi 14-phi 16mm, phi 18-phi 20mm and phi 25-phi 32 mm;
step 404, when heating is started, converting the peak value of the current oscillogram of the power coil into a digital signal after passing through the high-speed AD sampling circuit, and sending the digital signal to the control end microprocessor;
step 405, after the control end microprocessor receives the digital signal, calling a corresponding control program in the memory to automatically identify the size of the handle.
And 5, calling a stored corresponding control program to control the power coil to heat the tool handle at the corresponding frequency and time of the optimal heating current according to the judged size of the heated tool handle.
Synthesize, when the hot-packing machine starts the heating, high-speed AD sampling circuit can the wave form peak value of the power coil circular telegram alternating current in the twinkling of an eye, the peak value that the handle of a knife of equidimension embodied is different, high-speed AD gathers the chip and sends for control end microprocessor after converting this analog signal of wave form peak value into digital signal, control end microprocessor calls the electric current size that preset program control passes through in the memory, the electric current form, frequency and effect duration, the energy that accurate control hot-packing handle of a knife obtained, therefore, can effectively solve the loaded down with trivial details problem of manual selection heating procedure, avoided the maloperation simultaneously and made the handle of a knife overheated, the operating time has been reduced, work efficiency and security have been improved greatly.
Claims (6)
1. The method for automatically identifying the knife handle through power coil induction detection is characterized by comprising the following steps of:
step 1, determining the frequency and time of the optimal heating current of the power coils corresponding to different cutter handle sizes, and compiling and storing a corresponding control program according to the determined result;
step 2, starting and heating the hot charging machine;
step 3, detecting the waveform peak value of the alternating current at the moment when the power coil is electrified;
step 4, automatically judging the size of the heated cutter handle according to the waveform peak value;
and 5, calling a stored corresponding control program to control the power coil to heat the tool handle at the corresponding frequency and time of the optimal heating current according to the judged size of the heated tool handle.
2. The method for automatically identifying the tool holder through power coil induction detection according to claim 1, wherein in the step 1, when determining the frequency and time of the optimal heating current of the power coil corresponding to different tool holder sizes, the method specifically comprises the following steps:
step 101, establishing an excel table;
102, respectively measuring and recording inductance values of the empty coils, the empty tool handles in various sizes and the tool handles in various sizes by using a digital bridge, and recording the inductance values in the excel table;
103, manually setting the frequency and time of the heating current of the power coil, and determining the frequency and time of the optimal heating current corresponding to different knife handle sizes after multiple tests.
3. The method for automatically identifying the knife handle through the power coil induction detection according to claim 1, wherein in the step 1, the corresponding control program is programmed and stored in a memory of a microprocessor at the control end.
4. The method for automatically identifying the knife handle through the power coil induction detection according to claim 1, wherein in the step 3, a waveform peak value of alternating current at the moment when the power coil is electrified is detected through a high-speed AD sampling circuit.
5. The method for automatically identifying the knife handle through power coil induction detection according to claim 4, wherein a high-speed AD sampling chip in the high-speed AD sampling circuit converts an analog signal of a detected waveform peak value into a digital signal and sends the digital signal to a control end microprocessor.
6. The method for automatically identifying the knife handle through power coil induction detection according to claim 5, wherein the step 4 specifically comprises the following steps:
step 401, dividing the size of the tool shank into several ranges of phi 3-phi 5mm, phi 6-phi 12mm, phi 14-phi 16mm, phi 18-phi 20mm and phi 25-phi 32 mm;
step 402, determining a current waveform peak value corresponding to the minimum size and the maximum size in each size range;
step 403, obtaining current waveform peak value ranges respectively corresponding to phi 3-phi 5mm, phi 6-phi 12mm, phi 14-phi 16mm, phi 18-phi 20mm and phi 25-phi 32 mm;
step 404, when heating is started, converting the peak value of the current oscillogram of the power coil into a digital signal after passing through the high-speed AD sampling circuit, and sending the digital signal to the control end microprocessor;
step 405, after the control end microprocessor receives the digital signal, calling a corresponding control program in the memory to automatically identify the size of the handle.
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| CN201910744939.1A CN110470204B (en) | 2019-08-13 | 2019-08-13 | Method for automatically identifying knife handle through power coil induction detection |
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| CN201910744939.1A CN110470204B (en) | 2019-08-13 | 2019-08-13 | Method for automatically identifying knife handle through power coil induction detection |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001018127A (en) * | 1999-07-09 | 2001-01-23 | Hitachi Hometec Ltd | Induction heating shrinkage fitting device |
| CN205325301U (en) * | 2015-12-21 | 2016-06-22 | 长合工业技术（天津）有限公司 | Chip handle of a knife |
| CN106493508A (en) * | 2016-10-11 | 2017-03-15 | 中国计量大学 | A kind of handle of a knife hot charging system based on electromagnetic induction |
| CN108136463A (en) * | 2015-08-10 | 2018-06-08 | 达涅利自动化有限公司 | For the method for the size of thermal measurement mental section during rolling |
| CN109714848A (en) * | 2018-12-28 | 2019-05-03 | 浙江水利水电学院 | A kind of load coil applied to thermal insert knife handle |
-
2019
- 2019-08-13 CN CN201910744939.1A patent/CN110470204B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001018127A (en) * | 1999-07-09 | 2001-01-23 | Hitachi Hometec Ltd | Induction heating shrinkage fitting device |
| CN108136463A (en) * | 2015-08-10 | 2018-06-08 | 达涅利自动化有限公司 | For the method for the size of thermal measurement mental section during rolling |
| CN205325301U (en) * | 2015-12-21 | 2016-06-22 | 长合工业技术（天津）有限公司 | Chip handle of a knife |
| CN106493508A (en) * | 2016-10-11 | 2017-03-15 | 中国计量大学 | A kind of handle of a knife hot charging system based on electromagnetic induction |
| CN109714848A (en) * | 2018-12-28 | 2019-05-03 | 浙江水利水电学院 | A kind of load coil applied to thermal insert knife handle |
Non-Patent Citations (1)
| Title |
|---|
| 《基于IGBT的刀柄热装装置的设计与实现》;俞丙威 等;《计算机测量与控制》;20171231;第154-157页 * |
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