CN113118880A - High-precision machining method for grinding machine - Google Patents
High-precision machining method for grinding machine Download PDFInfo
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- CN113118880A CN113118880A CN202110442746.8A CN202110442746A CN113118880A CN 113118880 A CN113118880 A CN 113118880A CN 202110442746 A CN202110442746 A CN 202110442746A CN 113118880 A CN113118880 A CN 113118880A
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- grinding machine
- resistance
- gap
- precision
- machining method
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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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
- B24B49/10—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 involving electrical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention discloses a high-precision machining method for a grinding machine, which comprises the steps of firstly installing a detection device on a grinding machine, and establishing a mathematical model of a gap resistance; and then, the resistance value of the gap resistor obtained by calculation according to the data collected by the detection device and the mathematical model of the gap resistor is displayed on a display, and the smaller the resistance value fluctuation is, the higher the machining surface precision is. The invention provides a new method for detecting the machining precision of the grinding machine, which reduces the requirements on the experience of the operators of the grinding machine and is convenient for the machining of the grinding machine; meanwhile, the intelligent level of the grinding machine is improved, and the machining precision of the workpiece is greatly improved; and can easily install check out test set additional to equipment, reduced equipment upgrading cost.
Description
Technical Field
The invention relates to the field of machining, in particular to a high-precision machining method for a grinding machine.
Background
In the field of traditional machining, a grinding machine machining precision method is lacked, and with the upgrading and updating of the traditional manufacturing industry under the 4.0 concept background of the industry, the requirement on machining precision is increasingly increased.
In the field of traditional grinding machine machining, the mastering of the machining precision of a grinding machine still depends on the experience of operators, and a perfect machining precision detection system is lacked. Therefore, an effective auxiliary measuring method for machining precision of grinding machine is needed
Disclosure of Invention
Aiming at overcoming the defects in the prior art, the invention mainly aims to overcome the defects in the prior art and discloses a high-precision machining method for a grinding machine, which comprises the following steps:
step 1, mounting a detection device on a grinding machine, and establishing a mathematical model of a gap resistor;
and 2, displaying the resistance value of the gap resistor obtained by calculation according to the data acquired by the detection device and the mathematical model of the gap resistor on a display, wherein the smaller the resistance value fluctuation is, the higher the machining surface precision is.
2. A high-precision machining method for a grinding machine according to claim 1, characterized in that in step 1, the mathematical model of the gap resistance is
Wherein R is0Is the total resistance, R1Is the resistance of the grinding wheel, R2Is a gap resistance, R3The equivalent resistance of the workpiece and the clamping table;
the derivation is as follows:
in the case of dynamic calibration, R1、R3Is a constant value, get R0、R2Forming positive correlation.
Further, in step 2, the resistance value of the gap resistor is displayed by gray scale.
Further, the detection device collects the current value of the grinding machine.
Further, the air conditioner is provided with a fan,
the detection device comprises a voltage-stabilized power supply, a Hall current sensor and a Hall current sampling circuit, wherein the voltage-stabilized power supply is used for providing stable detection voltage, and the Hall current sampling circuit is used for collecting current through the Hall current sensor.
Further, the detection voltage applied to the grinding machine in the horizontal plane direction of the detection device is perpendicular to the reciprocating processing action direction of the grinding machine.
The invention has the following beneficial effects:
the invention provides a new method for detecting the machining precision of the grinding machine, which reduces the requirements on the experience of the operators of the grinding machine and is convenient for the machining of the grinding machine; meanwhile, the intelligent level of the grinding machine is improved, and the machining precision of the workpiece is greatly improved; and can easily install check out test set additional to equipment, reduced equipment upgrading cost.
Drawings
FIG. 1 is a schematic flow chart of a high precision machining method for a grinding machine according to the present invention;
FIG. 2 is a form of grinding machine processing;
FIG. 3 shows a color bar reflecting the magnitude of the resistance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A high-precision machining method for a grinding machine, as shown in fig. 1 to 3, comprising the steps of:
step 1, mounting a detection device on a grinding machine, and establishing a mathematical model of a gap resistor; the detection voltage applied in the horizontal plane direction of the detection device is vertical to the reciprocating processing action direction of the grinding machine, so that the interference of a physical space is avoided.
And 2, displaying the resistance value of the gap resistor obtained by calculation according to the data collected by the detection device and the gap resistor mathematical model on a display, wherein the smaller the resistance value fluctuation is, the higher the machining surface precision is.
In the embodiment, the machining precision of the machined surface of the workpiece is determined by monitoring the change of the equivalent resistance between the workpiece and the grinding contact surface to obtain the dynamic change of the cutting amount.
The specific analysis is as follows:
when the grinding machine is actually used, the integral resistance of the grinding machine is formed by connecting the resistance of the grinding wheel, the equivalent resistance of the workpiece and the clamping table and the gap resistance in parallel; from ohm's law, one can derive:
wherein R is0Is the total resistance, R1Is the resistance of the grinding wheel, R2Is a gap resistance, R3The equivalent resistance of the workpiece and the clamping table; after conversion and finishing, the following components are obtained:
in the case of dynamic calibration, R1、R3Is a constant value, get R0、R2Forming positive correlation.
According to the formula
ρ is the resistivity of the material, L is the length (L is the width of the grinding wheel in FIG. 2), and S is the cross-sectional area; the resistance R is smaller as the cross-sectional area S (area of a × b in fig. 2) becomes larger; when the workpiece is machined by the grinding machine, the resistivity and the length of the workpiece are invariable, the surface of the workpiece is infinitely enlarged, and the sectional area between the workpiece and a grinding wheel is larger if the surface precision of the workpiece is higher; conversely, when the surface accuracy of the workpiece is low, the surface is uneven, and the corresponding cross-sectional area between the workpiece and the grinding wheel is smaller. I.e. the roughness of the workpiece affects the resistance value.
In this embodiment, the detection device collects the current data of the grinding machine according to ohm's law:
and calculating to obtain the resistance value. In the case where the voltage is constant, the larger the current value is, the smaller the resistance value is.
In step 2, the resistance value of the gap resistor is displayed through gray scale, namely the depth of gray scale reflects the resistance value; in this embodiment, the larger the resistance value is set, the higher the gray scale level is; when the grinding machine is used, the grinding position is continuously changed, and continuous color gradation conversion is displayed on a display screen; that is, color bands with different depths as shown in fig. 3 are displayed, the processing precision of the surface of the workpiece is judged by observing the overall depth degree, and when the depths are uniform, the surface precision of the workpiece is high; on the contrary, when the depth is not uniform, the chromaticity display shows that the surface accuracy of the workpiece is low. During actual measurement, measurement data fluctuates, so that the uniform depth means that the coloring step difference distance of the color tape is small, and the visual observation is smooth; conversely, uneven shades refer to large differences in color levels, and the shade can be perceived clearly.
In this embodiment, the detection device includes a regulated power supply, a hall current sensor and a hall current sampling circuit, the regulated power supply is applied to two ends of the grinding machine to provide a stable detection voltage, and the hall current sampling circuit is used to collect current through the hall current sensor.
The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.
Claims (6)
1. A high-precision machining method for a grinding machine is characterized by comprising the following steps:
step 1, mounting a detection device on a grinding machine, and establishing a mathematical model of a gap resistor;
and 2, displaying the resistance value of the gap resistor obtained by calculation according to the data acquired by the detection device and the mathematical model of the gap resistor on a display, wherein the smaller the resistance value fluctuation is, the higher the machining surface precision is.
2. A high-precision machining method for a grinding machine according to claim 1, characterized in that in step 1, the mathematical model of the gap resistance is
Wherein R is0Is the total resistance, R1Is the resistance of the grinding wheel, R2Is a gap resistance, R3The equivalent resistance of the workpiece and the clamping table;
the derivation is as follows:
in the case of dynamic calibration, R1、R3Is a constant value, get R0、R2Forming positive correlation.
3. A high-precision machining method for a grinding machine as claimed in claim 1, wherein in step 2, the resistance value of said gap resistor is displayed by gray scale.
4. A high-precision machining method for a grinding machine according to claim 1, characterized in that said detection means acquires a current value of said grinding machine.
5. The high-precision machining method for the grinding machine according to claim 4, characterized in that the detection device comprises a voltage-stabilized power supply, a Hall current sensor and a Hall current sampling circuit, wherein the voltage-stabilized power supply is applied to two ends of the grinding machine to provide stable detection voltage, and the Hall current sampling circuit is used for collecting current through the Hall current sensor.
6. A high-precision machining method for a grinding machine as claimed in claim 5, wherein the detection voltage applied to the grinding machine in the direction of the horizontal plane of said detection means is perpendicular to the direction of the reciprocating machining action of said grinding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110442746.8A CN113118880A (en) | 2021-04-23 | 2021-04-23 | High-precision machining method for grinding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110442746.8A CN113118880A (en) | 2021-04-23 | 2021-04-23 | High-precision machining method for grinding machine |
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| CN113118880A true CN113118880A (en) | 2021-07-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000296465A (en) * | 1999-04-15 | 2000-10-24 | Hitachi Ltd | Polishing method and system |
| CN101829951A (en) * | 2010-05-07 | 2010-09-15 | 上海理工大学 | Outer circle grinding workpiece surface quality visualization real-time monitoring method |
| CN204128494U (en) * | 2014-10-23 | 2015-01-28 | 浙江海洋学院东海科学技术学院 | A kind of Metal Surface Roughness measurement mechanism |
| JP2018024077A (en) * | 2016-08-09 | 2018-02-15 | 株式会社ジェイテクト | Grinder system |
| CN207953573U (en) * | 2018-01-24 | 2018-10-12 | 江苏中安科技服务有限公司 | A kind of grinding machine safety detector |
| CN110900454A (en) * | 2019-12-04 | 2020-03-24 | 长沙理工大学 | Grinding surface roughness real-time detection and intelligent control system |
-
2021
- 2021-04-23 CN CN202110442746.8A patent/CN113118880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000296465A (en) * | 1999-04-15 | 2000-10-24 | Hitachi Ltd | Polishing method and system |
| CN101829951A (en) * | 2010-05-07 | 2010-09-15 | 上海理工大学 | Outer circle grinding workpiece surface quality visualization real-time monitoring method |
| CN204128494U (en) * | 2014-10-23 | 2015-01-28 | 浙江海洋学院东海科学技术学院 | A kind of Metal Surface Roughness measurement mechanism |
| JP2018024077A (en) * | 2016-08-09 | 2018-02-15 | 株式会社ジェイテクト | Grinder system |
| CN207953573U (en) * | 2018-01-24 | 2018-10-12 | 江苏中安科技服务有限公司 | A kind of grinding machine safety detector |
| CN110900454A (en) * | 2019-12-04 | 2020-03-24 | 长沙理工大学 | Grinding surface roughness real-time detection and intelligent control system |
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Application publication date: 20210716 |