CN2087551U - Device for display temp. field of cutting tool - Google Patents
Device for display temp. field of cutting tool Download PDFInfo
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- CN2087551U CN2087551U CN 91203914 CN91203914U CN2087551U CN 2087551 U CN2087551 U CN 2087551U CN 91203914 CN91203914 CN 91203914 CN 91203914 U CN91203914 U CN 91203914U CN 2087551 U CN2087551 U CN 2087551U
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- cutting tool
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- 238000000034 method Methods 0.000 abstract description 6
- 238000012937 correction Methods 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 description 5
- 102100024061 Integrator complex subunit 1 Human genes 0.000 description 3
- 101710092857 Integrator complex subunit 1 Proteins 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
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Abstract
The utility model relates to a device which is capable of displaying the temperature field of a cutting tool, and the device is composed of a temperature measuring component provided with thermocouples and a display component provided with an amplifier, an A / D converter, a single chip computer, a latch, a program memory, a programmable interface chip, an LED displayer and a BCD dial disc. The technique of the single chip computer is used for processing the non-linearity of the output characteristic and the temperature compensation of a cold end of the standard thermocouple to enhance correction precision. The utility model is not influenced by temperature and component discreteness. The device can be compatible with thermocouples of different models, and the temperature value of a measured position is displayed under the condition of room temperature.
Description
The utility model relates to the device with thermocouple measuring temperature.
The measurement of cutting temperature is an important techniques in the cutting experiment research, can be used to study influence, the check cutting temperature theoretical accuracy calculated of various factors to cutting temperature, also can be used to the signal source of measured cutting temperature as the control working angles.
The method of measuring cutting temperature is a lot.In artificial thermocouple method, just like November 18 89 year applying date, authorize day on December 5th, 90, the patent No. 89219946.6, it is disclosed that name is called " experimental provision of measuring the cutting tool temperature field ", through the temperature measuring equipment that has K type thermocouple of particular design.It can be used for the measurement in cutter principal section temperature field in the General Two-Dimensional cutting.
As everyone knows, the problem that thermocouple temperature measurement ran into is how to handle the non-linear and cold-junction compensation of its output signal.Often adopted the hardware compensating mode in the past, the one, in analog domain, carry out, the 2nd, in numeric field, carry out, but their complex circuit, cost height, debug difficulties, and correction accuracy is subjected to the influence of temperature, components and parts discreteness.How seeking that more advanced linearization technique proofreaies and correct the thermocouple nonlinear characteristic is anxious problem to be solved.
The purpose of this utility model is, uses the non-linear and cold-junction compensation that single chip microcomputer technology is handled the standard couple output characteristics, at ambient temperature, demonstrates the temperature value at the position of surveying.
Description of drawings:
Fig. 1, the utility model thermocouple temperature measurement parts front view;
Fig. 2, thermocouple temperature measurement components A-A cutaway view;
Fig. 3, structured flowchart of the present utility model;
The structural circuit figure of Fig. 4, temperature display unit.
The structure of this device is: it is made of thermocouple temperature measurement parts and temperature display unit. The thermocouple temperature measurement parts as shown in Figure 1 and Figure 2, mainly comprise and can make the screw mandrel 1 that vertically moves, and the screw mandrel 2 that thermocouple 3 can move laterally is housed, and regulate vertically, cross lead screw, can make the contact of thermocouple 3 move to the required measuring point of tested cutter principal section. Temperature display unit, as shown in Figure 3, mainly comprise the output termination amplifier 4 by thermocouple 3, signal input a/d converter 5 after amplifying, the signal of A/D converter 5 outputs is delivered to the microcomputer measurement system that is made up of 8031 single-chip microcomputers 6,74LS373 latch 7,2732A memory under program 8, signal is after treatment delivered to 8255 programmable interface chips 9, light-emitting diode display 10, the cold junction temperature value of thermocouple is set by BCD dial-up dish 11, through 8255 programmable interface chip 9C mouths input single chip microcomputer.
Below the utility model is further described:
At first thermocouple is experienced the temperature of detected part on the tested cutter principal section, the electromotive force of its output is delivered to High-precision O P07 amplifier 4 be amplified to suitable level, as shown in Figure 4, voltage after the amplification is through 5G14433A/D converter 5, convert the binary-coded decimal digital quantity to, this instrument is only made general gradual temperature test instrument and is used, so locate to adopt antijamming capability strong, cheap and double integration A/D converter that conversion speed is slow, if require the instrument dynamic response better, then should adopt the A/D converter that approaches one by one.Because the output of 5G14433A/D converter 5 transformation results is dynamic, so with the P of its output termination to 8031 single-chip microcomputers 6
1Mouthful, each EOC, in the EOC of 5G14433A/D converter 5 end output one positive pulse, after anti-phase, request signal as the outer interrupt source INT1 of 8031 single-chip microcomputers 6, after the interrupt requests of 8031 single-chip microcomputers, 6 response EOC, read kilobit, hundred, ten, individual position successively, and deposit in the internal data buffering area.Whole temperature display unit is to carry out under the control of application program, and application program mainly is made up of initialize routine, main program and interrupt service routine:
1. initialize routine.Its function is initialization, and specific tasks are that storehouse is set, and putting INT1 is the edge triggering mode, and allows the interrupt requests of INT1, and 8255 programmable interface chip 9A mouths, B mouth are set to the output services mode, and the C mouth is set to input mode.
2. main program.It is made up of data processor and display routine, and main program becomes binary number with binary-coded decimal after the ambient temperature value of being set by BCD dial-up dish 11 is read in buffering area from the C mouth, converts three byte floating numbers again to, by calculating X
1=0.04T ℃ of equation obtains the cold-junction compensation electromotive force, and deposit relevant buffering area in, then the binary-coded decimal of 5G14433A/D converter 5 outputs is converted to three byte floating numbers, and and the addition of cold-junction compensation electromotive force, obtain cold junction temperature for ℃ dut temperature proofread and correct electromotive force X, T ℃ of last calculation correction equation=-0.007X
4+ 0.149X
3-0.973X
2+ 26.543X-0.694, obtain three byte floating numbers of dut temperature value, then by floating-point two---after the decimal number conversion, send the display buffer, through 8255 programmable interface chips, 9 buffer/driver 74LS06,74LS07, demonstrate measured value by light-emitting diode display 10.Display routine is mainly finished circulation demonstration dut temperature value, and after the demonstration once that circulates, the test flag bit is declared not interruption, if any, then alternation of hosts's program is carried out the data processing, otherwise continues to repeat above-mentioned procedure for displaying.
3. interrupt service routine.Its function is to keep the scene intact, and carries out data acquisition, because 5G14433A/D converter 5 adopts dynamic four binary-coded decimals output, respectively by DS
1～DS
4The output of timesharing gating has appeared at Q with the data on the expression corresponding positions
0～Q
3On the output line, in 6 responses of 8031 single-chip microcomputers, have no progeny, judge P respectively
1Whether the data on the mouth have a gating signal, if having just with Q
0～Q
3Deposit data on the output line behind the recovery scene, is promptly returned main program and is continued to carry out in data field 20H～21H unit.
The display part the key technical indexes:
Measurement category: 0～500 ℃
Precision: ± 0.1%
Resolution ratio: 0.1 ℃
Display mode: 5 LED
Compared with prior art, the utlity model has following advantage:
(1) owing to utilize single chip microcomputer technology to handle the non-linear and cold-junction compensation of standard couple output characteristics, improves correction accuracy, and not influenced by temperature, components and parts discreteness.
(2) can be compatible mutually with the thermocouple of different model, change the model of thermocouple, do not need to change hardware, as long as revise meter constant, not only reduce cost, and maneuverability.
Claims (1)
- A kind of device that can show the cutting tool temperature field, it comprises can make the screw mandrel [1] that vertically moves, screw mandrel [2] thermocouple [3] and that can move laterally is housed, regulate vertically, cross lead screw, can make the contact of thermocouple [3] move to required measuring point on the tested cutter principal section, feature of the present utility model is: the output termination amplifier [4] of thermocouple [3], signal input a/d converter [5] after the amplification, again signal is delivered to by 8031 single-chip microcomputers [6], 74LS373 latch [7], the microcomputer measurement system that 2732A memory under program [8] is formed, signal after the processing is delivered to 8255 programmable interface chips [9], light-emitting diode display [10], the cold junction temperature value of thermocouple [3] is set by BCD dial-up dish [11], through 8255 programmable interface chips [9] input single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203914 CN2087551U (en) | 1991-03-13 | 1991-03-13 | Device for display temp. field of cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203914 CN2087551U (en) | 1991-03-13 | 1991-03-13 | Device for display temp. field of cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2087551U true CN2087551U (en) | 1991-10-30 |
Family
ID=4914120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91203914 Withdrawn CN2087551U (en) | 1991-03-13 | 1991-03-13 | Device for display temp. field of cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2087551U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349596B (en) * | 2007-07-18 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | System and method for acquiring thermo-electric couple temperature data |
| CN104889820A (en) * | 2015-06-12 | 2015-09-09 | 济南大学 | Novel method for measuring drilling and cutting temperature |
| CN105339134A (en) * | 2013-08-13 | 2016-02-17 | 株式会社山本金属制作所 | Temperature measurement method, and temperature measurement device |
| CN109506801A (en) * | 2018-12-28 | 2019-03-22 | 中国船舶工业综合技术经济研究院 | A kind of Hull Welding temperature monitoring device |
-
1991
- 1991-03-13 CN CN 91203914 patent/CN2087551U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349596B (en) * | 2007-07-18 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | System and method for acquiring thermo-electric couple temperature data |
| CN105339134A (en) * | 2013-08-13 | 2016-02-17 | 株式会社山本金属制作所 | Temperature measurement method, and temperature measurement device |
| CN105339134B (en) * | 2013-08-13 | 2018-02-27 | 株式会社山本金属制作所 | Temperature-measuring method and temperature measuring apparatus |
| CN104889820A (en) * | 2015-06-12 | 2015-09-09 | 济南大学 | Novel method for measuring drilling and cutting temperature |
| CN104889820B (en) * | 2015-06-12 | 2017-12-26 | 济南大学 | A kind of cutting temperature monitoring device for drilling processing |
| CN109506801A (en) * | 2018-12-28 | 2019-03-22 | 中国船舶工业综合技术经济研究院 | A kind of Hull Welding temperature monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |