CN104742018A - Grinding method of controlling grinding parameters - Google Patents
Grinding method of controlling grinding parameters Download PDFInfo
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- CN104742018A CN104742018A CN201510167011.3A CN201510167011A CN104742018A CN 104742018 A CN104742018 A CN 104742018A CN 201510167011 A CN201510167011 A CN 201510167011A CN 104742018 A CN104742018 A CN 104742018A
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- grinding
- temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/14—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the temperature during grinding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a grinding method of controlling grinding parameters. The method comprises the following steps: closely adhering a temperature measurement sample piece and a to-be-processed work-piece in an insulating clamp; exploring a grinding technology, and summarizing a change rule of the grinding temperature in the grinding process; monitoring the grinding temperature momently by a control system when the to-be-processed work-piece is ground. According to the grinding method provided by the invention, the measurement sample piece and the to-be-processed work-piece which are made from the materials which are the same as the work-piece can be processed at the same time, a thermocouple is embedded into the measurement sample piece rather than a practical part to measure the grinding temperature, and the temperature online feedback and real-time control of the grinding parameters can be realized under the precondition that the processing part is not damaged; furthermore, the real-time monitoring feedback can be carried out on the grinding temperature by a wire clamping thermocoupler, a temperature collecting system and a control system, the consistence of the grinding and processing qualities of the batch of parts can be improved, the grinding performance of a grinding wheel at different stages can be fully utilized, the use ratio can be improved, and energy saving can be realized; in addition, the grinding method can be repeated to use due to measuring for multiple times, convenient to manufacture and high in accuracy.
Description
Technical field
The present invention relates to a kind of method for grinding controlling grinding parameter, belong to efficient, high-quality grinding field.
Background technology
In recent years, require more and more stricter for part volume quality conformance.So-called product quality uniformity, the product being Workshop Production aborning keeps consistency, and does not occur product quality fluctuation (neither preference, again not deviation).In the batch machining of high-precision part, grinding normally ensures the precision of product and last procedure of quality.The method extensively adopted at present is first repaired emery wheel, and carry out grinding with preset parameter to a collection of part after finishing, i.e. permanent feeding grinding, in whole grinding process, machined parameters no longer adjusts or changes.But in batch continuous grinding process, the continuous Wear and plug of emery wheel, makes the grinding performance of emery wheel be more big changes, and makes grinding state be in dynamic change, and then affects the uniformity with a collection of part to be processed machining accuracy and surface quality.In order to ensure the crudy with a collection of part, necessary frequent trimming wheel, or adopt comparatively conservative machined parameters to carry out grinding, even if also can obtain qualified crudy under guaranteeing abrasion of grinding wheel or stopping state, this can extreme influence working (machining) efficiency.The problem of wheel grinding state variable effect grinding quality and working (machining) efficiency, strict demand is being had and the workpiece manufacture occasion higher with processing cost is especially outstanding, as aerospace field engine high-temperature alloy type work pieces process, the batch micro operations etc. with the auto parts of high interchangeability requirement to batch machining object quality stability.
Grinding temperature is the very important process variable characterizing grinding quality, grinding area temperature and the final grinding quality situation of workpiece have close ties, grinding area temperature is too high, directly can cause the grinding burn of piece surface, form affected layer, case hardness and wearability decline, and affect the serviceability of part, even cause part to be processed to be scrapped.Particularly to the grinding of the difficult-to-machine material such as titanium alloy, high temperature alloy, controlling grinding temperature is the key factor ensureing part processing precision and surface integrity.Domestic and international at present a large amount of research work is carried out to difficult-to-machine material grinding temperature and grinding process.Chinese patent CN102398220A disclosed " the grinding area temperature measuring equipment of flat surface grinding " and Chinese patent CN202066612U disclosed " one can be ground formula Semi-artifical thermocouple and be measured grinding skin temperature device " etc., Semi-artifical thermocouple method is adopted directly to measure grinding area temperature, the grinding temperature that can be under the different grinding parameter of research, different emery wheel state provides detection means, but the temperature feedback do not related in grinding process and grinding parameter On-Line Control Method.These class methods all can be used for the measurement of grinding temperature in grinding process experimental study, thus instruct the formulation of grinding process.This method measures grinding temperature needs the even temperature sensor of built-in thermoelectric, destroy workpiece to be machined, therefore the measurement of grinding temperature in production process can not be directly used in, after grinding process is determined, what still adopt is constant parameter grinding, can not solve the problem that abrasion of grinding wheel blocks the crudy uniformity difference caused.
Chinese patent CN102009387A disclosed " a kind of grinding semiconductor wafer power on-line measurement device and control method for grinding " and Chinese patent CN101716747A disclosed " the piezoelectric type grinding force measurement mechanism for silicon chip ultra-precision grinding machine " etc., for the demand of semiconductor wafer superfine grinding, adopt piezoelectric transducer on-line measurement grinding force, and by grinding force FEEDBACK CONTROL grinding parameter, realize control grinding, be applicable to the grinding of the hard brittle material to grinding force sensitivity, the Detection & Controling of grinding temperature can not be realized, to the high temperature alloy of grinding temperature and scorch sensitivity, the control of the part grinding process such as titanium alloy is helpless.
At present still not by the Real-Time Monitoring of grinding temperature and the method for feedback On-line Control grinding parameter.In the grinding of the part such as titanium alloy, high temperature alloy, realize the on-line measurement of grinding temperature and control grinding parameter in real time, the uniformity for the machining accuracy and batch micro operations part that ensure part is significant.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention will design a kind of method for grinding that can ensure the conforming control grinding parameter of the grinding quality of batch grinding work piece.
To achieve these goals, technical scheme of the present invention is as follows:
Control a method for grinding for grinding parameter, comprise the following steps:
A, thermometric exemplar and workpiece to be processed be close to together be placed in dielectric holder; Dielectric holder is placed on grinding machine workbench;
Described thermometric exemplar is by left exemplar unit, insulating materials, temperature-sensitive unit, right exemplar unit and be connected wire and form; Described left exemplar unit is the cuboid that there is rectangular channel on right side, described right exemplar unit and left exemplar cellular construction symmetry; Described left exemplar unit selects the material identical with workpiece to be processed with right exemplar unit;
A1, when workpiece to be processed is metal material, mounting clamp wire form Semi-artifical thermocouple in the rectangular channel between left exemplar unit and right exemplar unit; Described wired formula Semi-artifical thermocouple is made up of two layers of insulation material and one deck temperature-sensitive unit, and temperature-sensitive unit is between two layers of insulation material, and temperature-sensitive unit and right exemplar unit are connected to connection wire; Go to step A3;
A2, when workpiece to be processed is nonmetallic materials, mounting clamp wire form artifical Thermocouple in the rectangular channel between left exemplar unit and right exemplar unit; Described wired formula artifical Thermocouple is made up of three-layer insulated material and two-layer temperature-sensitive unit, install according to the order of one deck insulating materials, one deck temperature-sensitive unit, one deck insulating materials, one deck temperature-sensitive unit and one deck insulating materials, two temperature-sensitive unit are connected to connection wire;
A3, left exemplar unit and right exemplar unit are adopted dielectric holder clamping; Wire will be connected be connected with temperature acquisition system;
B, carry out grinding process exploration, sum up the Changing Pattern of grinding temperature in grinding process, analyze workpiece to be processed feed speed v
wand grinding depth a
pto the affecting laws of grinding temperature, the surface roughness of rapidoprint under different grinding temperature, residual stress and surface topography are detected, finally determine relation corresponding between grinding depth, feed-speed, grinding temperature and surface quality and integrality, determine at the higher limit T ensureing to allow in different processing request situation grinding temperature
0; Simultaneously in order to ensure grinding efficiency, determine T
1=T
0× 80% as the lower limit allowing grinding temperature, by this higher limit T
0with lower limit T
1input control system, as the controlled condition of actual grinding technique parameter;
When C, grinding workpiece to be processed, by control system moment monitoring grinding temperature, if grinding temperature is at T
0and T
1between, then grinding parameter remains unchanged; If grinding temperature exceedes higher limit T
0time, the built-in digital control system of grinding machine reduces feed speed and grinding depth, automatically to reduce grinding temperature; If grinding temperature is lower than lower limit T
1, the built-in digital control system of grinding machine increases feed speed grinding depth automatically, is ensureing to ensure grinding efficiency under grinding temperature is no more than the prerequisite of higher limit.
Compared with prior art, beneficial effect of the present invention is as follows:
1, because the measurement exemplar of employing of the present invention material identical with workpiece and part to be processed are processed simultaneously, measuring exemplar but not measurement grinding temperature of immersioning thermocouple in actual parts, the real-time control of temperature online feedback and grinding parameter can realized under the prerequisite not destroying processing parts.
2, because the present invention adopts wired formula thermocouple, temperature acquisition system and control system to carry out Real-Time Monitoring feedback to grinding temperature, when batch grinding work piece, the present invention sets and allows grinding temperature higher limit and lower limit, and summed up by the engineer testing in early stage, regulate machined parameters in real time, thus control grinding temperature further, improve part volume Grinding Machining Quality uniformity, and the grinding performance of emery wheel in different phase can be made full use of, increase operation rate, cost-saving.
3, because the present invention adopts wired thermocouple measurement grinding temperature, grinding area temperature can directly be measured, and can repetitive measurement, Reusability, simple for production, the degree of accuracy is high, and workpiece material can be metal and nonmetallic materials, and the scope of application is wide.
Accompanying drawing explanation
Fig. 1 is Experimental equipment of the present invention.
Fig. 2 is wired formula Semi-artifical thermocouple thermometric exemplar broken away view.
Fig. 3 is wired formula artifical Thermocouple thermometric exemplar broken away view.
Fig. 4 is wired formula Semi-artifical thermocouple thermometric exemplar installation diagram
Fig. 5 is the A-A sectional view of wired formula Semi-artifical thermocouple.
Fig. 6 is the grinding process method Technology Roadmap based on temperature feedback.
Fig. 7 is the affecting laws figure of feed-speed to grinding temperature.
Fig. 8 is the affecting laws figure of grinding depth to grinding temperature.
Fig. 9 is that grinding temperature is to grinding surface roughness affecting laws graph of a relation.
Figure 10 is grinding temperature effects on surface residual stress affecting laws figure.
Figure 11 is grinding temperature titanium alloy workpiece surface topography when being 475 DEG C.
Figure 12 is grinding temperature titanium alloy workpiece surface topography when being 610 DEG C.
Figure 13 is grinding temperature titanium alloy workpiece surface topography when being 745 DEG C.
In figure: 1, emery wheel, 2, thermometric exemplar, 3, workpiece to be processed, 4, dielectric holder, 5, temperature acquisition system, 6, control system, 7, left exemplar unit, 8, insulating materials, 9, temperature-sensitive unit, 10, right exemplar unit, 11, connect wire.
Detailed description of the invention
Describe the specific embodiment of the present invention in detail below in conjunction with technical scheme and accompanying drawing, rapidoprint applies more diphasic titanium alloy TC17 material for aero-engine, and its matrix is net structure, and intensity is high, and thermal conductivity factor is low, and chemism is very high.Adopt 80
#microcrystal fused alumina emery wheel, carry out plunge-cutting processing experiment, Fig. 1 is whole experimental provision sketch, for guaranteeing the integrality of workpiece, select the thermometric exemplar 2 of one piece of material identical with workpiece to be processed 3, and be close to workpiece to be processed 3 and be together placed in dielectric holder 4; Dielectric holder 4 is placed on grinding machine workbench.When workpiece to be processed 3 is nonmetallic materials, adopt wired formula artifical Thermocouple as shown in Figure 3, because this example workpiece to be processed 3 is metal material, in rectangular channel then between left exemplar unit 7 and right exemplar unit 10, installing insulating material 8, temperature-sensitive unit 9 and insulating materials 8 form wired formula Semi-artifical thermocouple (as shown in Fig. 2,4,5) successively, measure the real time temperature of grinding area in emery wheel 1 grinding process.
Carry out grinding process exploration for workpiece to be processed 3 material, determine relation corresponding between grinding parameter, grinding temperature and surface quality and integrality.As probed into grinding depth a
p, feed-speed v
wdeng the impact of grinding parameter on grinding temperature, when studying different grinding temperatures simultaneously, the surface roughness of workpiece to be processed 3 grinding skin, surface topography and surface residual stress etc.Known by Fig. 7-8, in shown scope, grinding temperature is along with grinding depth a
pwith workpiece to be processed 3 feed speed v
wincrease and rise.Known by Fig. 9-10, in shown temperature range, there is residual tension in titanium alloy workpiece surface, and surface roughness and residual tension rise along with grinding temperature and increase.Under Figure 11-13 is depicted as three kinds of grinding temperatures, use workpiece to be processed 3 surface topography of scanning electron microscope observation, as seen along with grinding temperature rises, surface is from the cultivated plow-shape looks of rule, adhesion is torn, until when grinding temperature 745 DEG C, micro-flaw appears in surface to what occur larger area.
Determine initial trial parameter, v
s=27m/s, a
p=0.01mm, v
w=12m/min.This experiment processing request is roughness R
aless than 0.5 μm, without defects such as face cracks.Grinding temperature higher limit T in this test is determined according to engineer testing experience in early stage
0=600 DEG C, lower limit T
1=600 × 80%=480 DEG C.This upper lower limit value input control system 6, as the controlled condition of actual grinding technique parameter; Possessing of control system 6 embedded software shows and warning function in real time;
Test for selected parameter, as shown in Figure 6, if grinding temperature is at T
0and T
1between, then grinding parameter remains unchanged; If grinding temperature exceedes higher limit T
0time, the built-in digital control system of grinding machine regulates grinding parameter (reduce feed speed, reduce grinding depth) automatically, to reduce grinding temperature; If grinding temperature is lower than lower limit T
1, the built-in digital control system of grinding machine regulates grinding parameter (increase feed speed, increase grinding depth) automatically, is ensureing to ensure grinding efficiency under grinding temperature is no more than the prerequisite of higher limit.
Adopt with nothing finishing Continuous maching ten workpiece in the middle of a slice emery wheel 1, after grinding, workpiece surface roughness uniformity is good after testing, without defects such as surface microscopic crackles, meets processing request.To adopting unified parameters processing result than ever, grinding quality uniformity possesses advantage, saves the finishing time simultaneously, improves working (machining) efficiency.
The foregoing is only a kind of better embodiment controlling the method for grinding of grinding parameter that the present invention relates to, but practical range of the present invention is not limited thereto example.
Claims (1)
1. control a method for grinding for grinding parameter, it is characterized in that: comprise the following steps:
A, thermometric exemplar (2) and workpiece to be processed (3) be close to together be placed in dielectric holder (4); Dielectric holder (4) is placed on grinding machine workbench;
Described thermometric exemplar (2) is by left exemplar unit (7), insulating materials (8), temperature-sensitive unit (9), right exemplar unit (10) and be connected wire (11) and form; Described left exemplar unit (7) has the cuboid of rectangular channel for right side, described right exemplar unit (10) and left exemplar unit (7) symmetrical configuration; Described left exemplar unit (7) selects the material identical with workpiece to be processed (3) with right exemplar unit (10);
A1, when workpiece to be processed (3) is for metal material, mounting clamp wire form Semi-artifical thermocouple in the rectangular channel between left exemplar unit (7) and right exemplar unit (10); Described wired formula Semi-artifical thermocouple is made up of two layers of insulation material (8) and one deck temperature-sensitive unit (9), temperature-sensitive unit (9) is positioned between two layers of insulation material (8), and temperature-sensitive unit (9) is connected to right exemplar unit (10) and is connected wire (11); Go to step A3;
A2, when workpiece to be processed (3) is for nonmetallic materials, mounting clamp wire form artifical Thermocouple in the rectangular channel between left exemplar unit (7) and right exemplar unit (10); Described wired formula artifical Thermocouple is made up of three-layer insulated material (8) and two-layer temperature-sensitive unit (9), install according to the order of one deck insulating materials (8), one deck temperature-sensitive unit (9), one deck insulating materials (8), one deck temperature-sensitive unit (9) and one deck insulating materials (8), two temperature-sensitive unit (9) are connected to and connect wire (11);
A3, left exemplar unit (7) and right exemplar unit (10) are adopted dielectric holder (4) clamping; Wire (11) will be connected be connected with temperature acquisition system (5);
B, carry out grinding process exploration, sum up the Changing Pattern of grinding temperature in grinding process, analyze workpiece to be processed (3) feed speed v
wand grinding depth a
pto the affecting laws of grinding temperature, the surface roughness of rapidoprint under different grinding temperature, residual stress and surface topography are detected, finally determine relation corresponding between grinding depth, workpiece (3) feed speed, grinding temperature and surface quality and integrality, determine at the higher limit T ensureing to allow in different processing request situation grinding temperature
0; Simultaneously in order to ensure grinding efficiency, determine T
1=T
0× 80% as the lower limit allowing grinding temperature, by this higher limit T
0with lower limit T
1input control system (6), as the controlled condition of actual grinding technique parameter;
When C, grinding workpiece to be processed (3), by control system (6) moment monitoring grinding temperature, if grinding temperature is at T
0and T
1between, then grinding parameter remains unchanged; If grinding temperature exceedes higher limit T
0time, the built-in digital control system of grinding machine reduces feed speed and grinding depth, automatically to reduce grinding temperature; If grinding temperature is lower than lower limit T
1, the built-in digital control system of grinding machine increases feed speed grinding depth automatically, is ensureing to ensure grinding efficiency under grinding temperature is no more than the prerequisite of higher limit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167011.3A CN104742018B (en) | 2015-04-09 | 2015-04-09 | A kind of method for grinding controlling grinding parameter |
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|---|---|---|---|
| CN201510167011.3A CN104742018B (en) | 2015-04-09 | 2015-04-09 | A kind of method for grinding controlling grinding parameter |
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| CN104742018A true CN104742018A (en) | 2015-07-01 |
| CN104742018B CN104742018B (en) | 2017-01-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768467A (en) * | 2015-11-24 | 2017-05-31 | 核动力运行研究所 | A kind of novel metal inwall temperature measurement device and method |
| CN109531421A (en) * | 2019-01-10 | 2019-03-29 | 力德精密工业(深圳)有限公司 | A kind of real-time size detecting system and detection method based on accurate internal and external grinding machine |
| CN110039379A (en) * | 2019-03-20 | 2019-07-23 | 洛阳市精科主轴有限公司 | A kind of superfine grinding temperature-compensating instrument and grinding technique |
| CN110666685A (en) * | 2019-10-16 | 2020-01-10 | 河北工业大学 | Heat dissipation grinding device with grinding face temperature measurement function |
| CN110849928A (en) * | 2019-10-17 | 2020-02-28 | 浙江工业大学 | Ultrasonic rolling processing temperature measurement analysis method |
| CN115091287A (en) * | 2022-07-15 | 2022-09-23 | 华海清科股份有限公司 | Ultra-precise grinding parameter adjusting method and grinding system |
-
2015
- 2015-04-09 CN CN201510167011.3A patent/CN104742018B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768467A (en) * | 2015-11-24 | 2017-05-31 | 核动力运行研究所 | A kind of novel metal inwall temperature measurement device and method |
| CN106768467B (en) * | 2015-11-24 | 2019-09-17 | 核动力运行研究所 | A kind of metal inner surface temperature measurement device and method |
| CN109531421A (en) * | 2019-01-10 | 2019-03-29 | 力德精密工业(深圳)有限公司 | A kind of real-time size detecting system and detection method based on accurate internal and external grinding machine |
| CN109531421B (en) * | 2019-01-10 | 2020-11-10 | 力德精密工业(深圳)有限公司 | Real-time size detection system and detection method based on precise internal and external grinding machine |
| CN110039379A (en) * | 2019-03-20 | 2019-07-23 | 洛阳市精科主轴有限公司 | A kind of superfine grinding temperature-compensating instrument and grinding technique |
| CN110666685A (en) * | 2019-10-16 | 2020-01-10 | 河北工业大学 | Heat dissipation grinding device with grinding face temperature measurement function |
| CN110849928A (en) * | 2019-10-17 | 2020-02-28 | 浙江工业大学 | Ultrasonic rolling processing temperature measurement analysis method |
| CN115091287A (en) * | 2022-07-15 | 2022-09-23 | 华海清科股份有限公司 | Ultra-precise grinding parameter adjusting method and grinding system |
| CN115091287B (en) * | 2022-07-15 | 2023-12-29 | 华海清科股份有限公司 | Ultra-precise grinding parameter adjustment method and grinding system |
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|---|---|
| CN104742018B (en) | 2017-01-04 |
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