CN115562151A - Curve control method based on numerical control machine tool machining guide rail surface - Google Patents
Curve control method based on numerical control machine tool machining guide rail surface Download PDFInfo
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- CN115562151A CN115562151A CN202211254911.8A CN202211254911A CN115562151A CN 115562151 A CN115562151 A CN 115562151A CN 202211254911 A CN202211254911 A CN 202211254911A CN 115562151 A CN115562151 A CN 115562151A
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- guide rail
- machine tool
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- machining
- rail surface
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- 238000003754 machining Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35349—Display part, programmed locus and tool path, traject, dynamic locus
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a curve control method based on a numerical control machine tool for machining a guide rail surface, which comprises the following steps of 1, firstly, machining a workpiece guide rail surface for the first time by using the numerical control machine tool according to curve control requirements; step 2: measuring the error of the guide surface of the workpiece in a vertical plane by using a measuring tool; and step 3: superposing the actual measurement error of the workpiece guide rail and the curve control requirement with a numerical control interpolation straight line, and calculating a full-stroke segmented straight line interpolation absolute coordinate value; and 4, step 4: compiling a machining program according to the calculated absolute coordinate value, and inputting the machining program into a control command of the numerical control machine; and 5: and performing secondary finish machining on the guide rail surface of the workpiece by using a control machine tool. The invention has the beneficial effects that: the high-precision machining can be carried out on the guide rail surface of the workpiece, the scraping process of the guide rail surface is cancelled, the assembling efficiency is improved, and the tool input cost is saved.
Description
Technical Field
The invention relates to high-precision machining of a guide surface of a workpiece, in particular to a curve control method for machining the guide surface based on a numerical control machine tool.
Background
The precision machine tool is used as a working master machine in the manufacturing industry, the precision of the linear motion unit is a key item in precision control items of each motion unit of the machine tool, and the manufacturing precision of the guide rail surface is a core index of the linear motion unit; in actual production, the machining precision of the guide rail surface cannot completely meet the characteristic requirements of a machine tool of the guide rail surface due to the influence of the precision of machining equipment, the environmental temperature and the like, the limitation of functions and the limitation of a self-generated structure of a part.
In the prior art, after a machine tool is used for grinding a guide rail surface or directly milling, an assembly process is carried out, curve control requirements of the guide rail surface are controlled by manual scraping, so that the assembly efficiency is low, and the scraping tool is high in input cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a curve control method based on a numerically-controlled machine tool machining guide surface.
The purpose of the invention is realized by the following technical scheme: the curve control method based on the numerical control machine tool to process the guide rail surface comprises the following steps that 1, the numerical control machine tool is used for processing the guide rail surface of a workpiece for the first time according to curve control requirements; step 2: measuring the error of the guide surface of the workpiece in a vertical plane by using a measuring tool; and step 3: superposing the actual measurement error of the workpiece guide rail and the curve control requirement with a numerical control interpolation straight line, and calculating a full-stroke segmented straight line interpolation absolute coordinate value; and 4, step 4: compiling a machining program according to the calculated absolute coordinate value, and inputting the machining program into a control command of the numerical control machine; and 5: and performing secondary finish machining on the guide rail surface of the workpiece by using the control machine tool.
Optionally, the measuring means is an electronic level gauge.
Optionally, the vertical surface is a surface facing the feed axis of the machine tool.
The invention has the following advantages: the curve control method of the guide rail surface can be used for processing the guide rail surface of the workpiece with high precision, eliminates the scraping process of the guide rail surface, improves the assembly efficiency and saves the tool investment cost.
Drawings
FIG. 1 is a schematic flow process of the present invention;
FIG. 2 is a schematic view of an uncompensated measured curve;
FIG. 3 is a schematic diagram of a theoretical fill-in curve;
FIG. 4 shows the measurement of the rail surface raised portion before compensation;
fig. 5 shows the compensated sag values for the rail surface protrusions.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the present invention is used to usually place, or orientations or positional relationships that are usually understood by those skilled in the art, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, a curve control method based on a numerically-controlled machine tool for processing a guide rail surface, step 1, firstly, a numerically-controlled machine tool is used to process a guide rail surface of a workpiece for the first time according to a curve control requirement, the guide rail surface of the workpiece is a high-precision surface, after assembly, the precision of the guide rail surface reaches 0.01 micrometer, and a processing error exists, so that the guide rail surface of the workpiece presents three shapes of convex, flat and concave, and due to the existence of the convex surface, when the convex surface is assembled, the convex surface needs to be compensated, the traditional mode is that a manual scraping is used to control the curve control requirement of the guide rail surface, and the manual scraping causes low assembly efficiency, and the input cost of a scraping tool is large, in this embodiment, after the guide rail surface of the workpiece is first processed, the manual scraping is not needed, and the next step is entered, specifically, step 2: measuring the error of the guide surface of the workpiece in a vertical plane by using a measuring tool; further, the vertical plane is a plane which is opposite to a feed shaft of the control machine tool, the measuring tool is preferably an electronic horizontal instrument, the error of the guide rail surface in the vertical plane is measured, so that the specific sizes of the convex form, the flat form and the concave form of the guide rail surface are known, the actual measurement error of the workpiece guide rail is further obtained, then the actual measurement error of the workpiece guide rail and the curve control requirement are superposed with the numerical control interpolation straight line according to the step 3, and the absolute coordinate value of the full-stroke segmented straight line interpolation is calculated; calculating the track of the guide surface in secondary finish machining through absolute coordinate values, and then according to the step 4: a machining program is compiled according to the calculated absolute coordinate value, and the machining program is input into a control command of the numerical control machine; and finally, performing secondary finish machining on the guide rail surface of the workpiece by using the control machine tool, wherein the compensation of the guide rail surface of the workpiece is realized in the machining process through the secondary finish machining, so that the assembly precision is high, the assembly precision of 0.01 micrometer can be met, manual scraping is not needed, the assembly efficiency is high, and further the scraping tool investment is not needed, so that the production cost is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (3)
1. The curve control method based on the numerical control machine tool machining guide surface is characterized by comprising the following steps: step 1, firstly, carrying out first processing on a workpiece guide rail surface by using a numerical control machine tool according to curve control requirements; step 2: measuring the error of the guide surface of the workpiece in a vertical plane by using a measuring tool; and step 3: superposing the actual measurement error of the workpiece guide rail and the curve control requirement with a numerical control interpolation straight line, and calculating a full-stroke segmented straight line interpolation absolute coordinate value; and 4, step 4: a machining program is compiled according to the calculated absolute coordinate value, and the machining program is input into a control command of the numerical control machine; and 5: and performing secondary finish machining on the guide rail surface of the workpiece by using the control machine tool.
2. The curve control method based on a numerically controlled machine tool machining guide surface according to claim 1, characterized in that: the measuring tool is an electronic level instrument.
3. The curve control method based on a numerically controlled machine tool machining guide surface according to claim 1, characterized in that: the vertical surface is a surface opposite to the feed shaft of the control machine tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211254911.8A CN115562151A (en) | 2022-10-13 | 2022-10-13 | Curve control method based on numerical control machine tool machining guide rail surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211254911.8A CN115562151A (en) | 2022-10-13 | 2022-10-13 | Curve control method based on numerical control machine tool machining guide rail surface |
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| CN115562151A true CN115562151A (en) | 2023-01-03 |
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| CN202211254911.8A Pending CN115562151A (en) | 2022-10-13 | 2022-10-13 | Curve control method based on numerical control machine tool machining guide rail surface |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009220128A (en) * | 2008-03-13 | 2009-10-01 | Disco Abrasive Syst Ltd | Workpiece machining method and workpiece machining apparatus |
| CN104699925A (en) * | 2013-12-06 | 2015-06-10 | 武汉重型机床集团有限公司 | Processing method of super-long super-large high-precision stand columns |
| CN106802625A (en) * | 2017-03-14 | 2017-06-06 | 成都工业学院 | A kind of derivative hyperspace machine tool track motion reappearance method |
| CN108655761A (en) * | 2018-06-21 | 2018-10-16 | 李鹭扬 | A kind of new automatic Modular horizontal numerically-controlled machine tool |
| JP2019089142A (en) * | 2017-11-10 | 2019-06-13 | 国立大学法人 鹿児島大学 | Machine tool and control method for machine tool |
| CN110109418A (en) * | 2019-05-19 | 2019-08-09 | 重庆理工大学 | A kind of geometric error Fast Identification Method of five face machining center of large-sized gantry |
| CN113495526A (en) * | 2020-04-02 | 2021-10-12 | 辽宁锦鸿数控机械制造有限公司 | Single-channel numerical control system for crankshaft internal milling machine tool |
| WO2022067596A1 (en) * | 2020-09-30 | 2022-04-07 | 成都飞机工业（集团）有限责任公司 | Standard ball array-based geometric error detection method for machine tool |
-
2022
- 2022-10-13 CN CN202211254911.8A patent/CN115562151A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009220128A (en) * | 2008-03-13 | 2009-10-01 | Disco Abrasive Syst Ltd | Workpiece machining method and workpiece machining apparatus |
| CN104699925A (en) * | 2013-12-06 | 2015-06-10 | 武汉重型机床集团有限公司 | Processing method of super-long super-large high-precision stand columns |
| CN106802625A (en) * | 2017-03-14 | 2017-06-06 | 成都工业学院 | A kind of derivative hyperspace machine tool track motion reappearance method |
| JP2019089142A (en) * | 2017-11-10 | 2019-06-13 | 国立大学法人 鹿児島大学 | Machine tool and control method for machine tool |
| CN108655761A (en) * | 2018-06-21 | 2018-10-16 | 李鹭扬 | A kind of new automatic Modular horizontal numerically-controlled machine tool |
| CN110109418A (en) * | 2019-05-19 | 2019-08-09 | 重庆理工大学 | A kind of geometric error Fast Identification Method of five face machining center of large-sized gantry |
| CN113495526A (en) * | 2020-04-02 | 2021-10-12 | 辽宁锦鸿数控机械制造有限公司 | Single-channel numerical control system for crankshaft internal milling machine tool |
| WO2022067596A1 (en) * | 2020-09-30 | 2022-04-07 | 成都飞机工业（集团）有限责任公司 | Standard ball array-based geometric error detection method for machine tool |
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