CN101844318B - Compensation method and device for heat distortion of machine tool position ring - Google Patents
Compensation method and device for heat distortion of machine tool position ring Download PDFInfo
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- CN101844318B CN101844318B CN 201010180445 CN201010180445A CN101844318B CN 101844318 B CN101844318 B CN 101844318B CN 201010180445 CN201010180445 CN 201010180445 CN 201010180445 A CN201010180445 A CN 201010180445A CN 101844318 B CN101844318 B CN 101844318B
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- tool position
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Abstract
The invention discloses a compensation method and a device for heat distortion of a machine tool position ring. The compensation method comprises the following steps of: arranging a compensation rule on one of a fixed part and a movement part matched with the machine tool, wherein the compensation rule is made of heat-insensitive metal materials, one end of the compensation rule is fixedly connected with the part, and the other end, as a floating end, and the part can relatively move; fixedly arranging any element of a linear scale or a reading head in a linear scale sensor on the other matched part which is not provided with the compensation rule; and fixedly arranging the other part in the linear scale sensor at the floating end of the compensation rule. The invention can greatly improve the stability of the machine tool position precision, thereby the processing precision of the machine tool is greatly enhanced.
Description
Technical field
The present invention relates to a kind of compensation method and device of heat distortion of machine tool position ring.
Background technology
At present in existing various high precision machine tools, its position ring checkout gear comprises fixed part, moving component, is fixedly arranged on grating scale on the fixed part, is fixed in the grating ruler reading head on the moving component; During use, because variation of ambient temperature and parts heating, thermal deformation can occur in moving component, the position of grating ruler reading head can change thereupon, thereby the positional precision standard that causes its real positional precision error to be dispatched from the factory far above lathe, have a strong impact on the real work precision of lathe, reduced the performance of lathe.
Summary of the invention
The object of the invention is to the above-mentioned deficiency for prior art, a kind of compensation method and device of heat distortion of machine tool position ring is provided, it can significantly improve the stability of machine tool position precision, thereby significantly improves the machining accuracy of lathe.
For achieving the above object, the compensation method of heat distortion of machine tool position ring of the present invention, it is characterized in that may further comprise the steps: at the supporting fixed part of lathe and one of them in the moving component compensation chi is set, the compensation chi is hot insensitive metal material, one end and this parts of compensation chi connect firmly, and the other end can relatively move as floating end and this parts; In that not being installed, another parts that the compensation chi matches set firmly arbitrary element in grating scale in the grating scale sensor or the read head; Floating end at the compensation chi sets firmly another element in the grating scale sensor;
The insensitive metal material of above-mentioned heat is invar alloy, and its thermal coefficient of expansion is 1.6*10
-6/ C
0
As the further improvement of the method, between the parts of the floating end that compensates chi and correspondence, guideway is set also;
The compensation arrangement of heat distortion of machine tool position ring of the present invention, comprise supporting fixed part and moving component, characterized by further comprising the compensation chi on the parts located therein, the compensation chi is hot insensitive metal material, one end and this parts of compensation chi connect firmly, the other end is floating end, can relatively move with these parts; On another parts that the compensation chi matches are not installed, also be installed with the arbitrary element in grating scale in the grating scale sensor or the read head, be installed with another element in the grating scale sensor at the floating end of compensation chi;
Above-mentioned compensation chi material is invar alloy;
As the further improvement of this device, between the parts of the floating end that compensates chi and correspondence, also connect by guideway;
During use, its thermal coefficient of expansion of compensation chi of being made by the insensitive metal material of heat is very low, one end and parts connect firmly, the other end then connects firmly with grating scale or read head, the expanded by heating amount of compensation chi is compared and can be ignored with these parts like this, one section its heat distortion amount and variation of ambient temperature displacement corresponding with the compensation chi on these parts have just been filtered out by the compensation chi, the compensation chi can be selected to be installed on the parts that thermal deformation is larger in fixed part and the moving component, thereby guarantee the relatively stable of grating scale and read head position, can significantly improve the stability of machine tool position precision, thereby significantly improve the machining accuracy of lathe; Between the parts of the floating end that compensates chi and correspondence, also connect by guideway, in fixed part, moving component and compensation chi are being indulged the plane, be when being horizontally disposed with, both can realize the flexibility that relatively moves between floating end and the corresponding parts, can provide support the distortion of avoiding its deadweight to cause to the compensation chi again.
Description of drawings
Fig. 1 is the stereogram of the compensation arrangement embodiment one of heat distortion of machine tool position ring of the present invention.
Fig. 2 is the front view of the compensation arrangement embodiment two of heat distortion of machine tool position ring of the present invention.
Fig. 3 is the A-A cutaway view of Fig. 2.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1, the compensation arrangement of the heat distortion of machine tool position ring of this embodiment, the heat distortion amount of comprise supporting fixed part 1 and moving component 2, being located at the compensation chi 4(moving component 2 on the moving component 2 is larger than fixed part 1), compensation chi 4 adopts the invar alloy that belongs to hot insensitive metal material, and its coefficient of expansion is: thermal coefficient of expansion 1.6*10
-6/ C
0, compensation one end of chi 4 and moving component 2 connect firmly by screw, and the other end is floating end, can relatively move with moving component 2, and be installed with the read head 5 of grating scale sensor thereon; Also be installed with the grating scale 3 of grating scale sensor at fixed part 1;
During use, because compensation chi 4 its thermal coefficient of expansions are very low, even reach the moving component 2 of 5-6 rice for span, its thermal deformation also can be ignored, one end and the moving component 2 of compensation chi 4 connect firmly, can be with as far as possible close this end of the next component movement (such as milling head) that is connected with moving component 2, the other end then connects firmly with read head 5, the expanded by heating amount of compensation chi 4 is compared and can be ignored with moving component 2 like this, corresponding with compensation chi 4 one section its heat distortion amount and variation of ambient temperature displacement have just been filtered out by compensation chi 4 on the moving component 2, thereby guarantee the relatively stable of grating scale 3 and read head 5 positions, can significantly improve the stability of machine tool position precision, thereby significantly improve the machining accuracy of lathe; And compensation chi 4 adopts and belongs to hot insensitive metal material, and its intensity is high, also is convenient to processing;
Embodiment two
As shown in Figures 2 and 3, the compensation arrangement of the heat distortion of machine tool position ring of this embodiment, be included in the fixed part 6 and the moving component 7 that are the supporting setting of level in the vertical plane, the heat distortion amount of being located at moving component 7 in this example of compensation chi 8(on the fixed part 6 is less than fixed part 6), compensation chi 4 adopts the invar alloy that belongs to hot insensitive metal material, compensation one end of chi 8 and fixed part 6 connect firmly by screw, also connect by guideway 11 between the other end and the fixed part 6, can relatively move along the guide rail direction with fixed part 6, and be installed with the grating scale 9 of grating scale sensor at compensation chi 8; Also be installed with read head 10 at moving component 7;
Compare with embodiment one, present embodiment is except filtering out heat distortion amount and the variation of ambient temperature displacement of fixed part 6 by compensation chi 8, thereby guarantee the relatively stable of grating scale 9 and read head 10 positions, can significantly improve the stability of machine tool position precision, thereby significantly improve the machining accuracy of lathe, and between an end that compensates chi 8 and fixed part 6, also connect by guideway 11, both can realize the flexibility that relatively moves between this end and the fixed part 6, can provide support the distortion of avoiding its deadweight to cause to compensation chi 8 again.
The invention is not restricted to above-mentioned embodiment, also can be loaded on the moving component such as grating scale, read head is loaded on the fixed part, but as long as adopt claim 1 or 4 described technical schemes, all falls into protection scope of the present invention.
The present invention is the achievement in research that derives from " high-speed gantry five axle machining centers (AC the pivot angle) " problem (2009ZX04002-013) in the scientific and technological great special project of country's " high-grade, digitally controlled machine tools and basic manufacturing equipment ".
Claims (3)
1. the compensation method of a heat distortion of machine tool position ring, it is characterized in that may further comprise the steps: at the supporting fixed part of lathe and one of them in the moving component compensation chi is set, the compensation chi is hot insensitive metal material, one end and this parts of compensation chi connect firmly, and the other end can relatively move as floating end and this parts; In that not being installed, another parts that the compensation chi matches set firmly arbitrary element in grating scale in the grating scale sensor or the read head; Floating end at the compensation chi sets firmly another element in the grating scale sensor.
2. the compensation method of heat distortion of machine tool position ring as claimed in claim 1 is characterized in that the insensitive metal material of described heat is invar alloy.
3. the compensation method of heat distortion of machine tool position ring as claimed in claim 1 or 2 is characterized in that between the parts of the floating end that compensates chi and correspondence guideway being set also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010180445 CN101844318B (en) | 2010-05-24 | 2010-05-24 | Compensation method and device for heat distortion of machine tool position ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010180445 CN101844318B (en) | 2010-05-24 | 2010-05-24 | Compensation method and device for heat distortion of machine tool position ring |
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| Publication Number | Publication Date |
|---|---|
| CN101844318A CN101844318A (en) | 2010-09-29 |
| CN101844318B true CN101844318B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010180445 Expired - Fee Related CN101844318B (en) | 2010-05-24 | 2010-05-24 | Compensation method and device for heat distortion of machine tool position ring |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2781303B1 (en) * | 2011-11-16 | 2016-03-02 | Murata Machinery, Ltd. | Machine tool |
| CN102922371A (en) * | 2012-11-09 | 2013-02-13 | 中捷机床有限公司 | Ram thermal-deformation compensation mechanism of numerical control machine tool |
| CN103737435B (en) * | 2013-12-04 | 2016-01-06 | 安徽理工大学 | A kind of method improving CNC Machine Grating measuring system certainty of measurement |
| CN104690606A (en) * | 2015-01-23 | 2015-06-10 | 哈尔滨工业大学 | Structural device for controlling heat errors of numerical control machine tool ram |
| CN104741989B (en) * | 2015-04-09 | 2016-09-28 | 太原风华信息装备股份有限公司 | The cutter axis of edger unit for polaroid is to displacement compensation device and compensation method thereof |
| CN105983883A (en) * | 2016-07-18 | 2016-10-05 | 沈机集团昆明机床股份有限公司 | Thermal deformation compensation mechanism and method for ram main shaft of boring and milling machine |
| CN107378637A (en) * | 2017-08-16 | 2017-11-24 | 中国重型机械研究院股份公司 | A kind of numerical control machining tool heat error control structure and method |
| CN113701658B (en) * | 2021-09-01 | 2022-08-09 | 中国科学院长春光学精密机械与物理研究所 | Thermal deformation detection device and method for absolute grating ruler in non-uniform temperature field |
| CN117900897A (en) * | 2024-03-19 | 2024-04-19 | 济南二机床集团有限公司 | Thermal deformation compensation method of workbench mobile machine tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320529A1 (en) * | 1983-06-07 | 1984-12-13 | Maschinenfabrik Mikron AG, Bienne | Device for compensating for temperature-induced displacements of a work spindle relative to a rule attached to the spindle slide at a distance from the work spindle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301321A (en) * | 1969-02-25 | 1972-12-29 | ||
| JPH084997B2 (en) * | 1987-02-16 | 1996-01-24 | 東芝機械株式会社 | Displacement measuring device in mechanical equipment |
| JP2009214283A (en) * | 2008-03-13 | 2009-09-24 | Brother Ind Ltd | Thermal displacement correction method of machine tool, thermal displacement correction device and program for thermal displacement correction of the same |
| CN201751096U (en) * | 2010-05-24 | 2011-02-23 | 四川长征机床集团有限公司 | Device for compensating thermal deformation of position loop of machine tool |
-
2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320529A1 (en) * | 1983-06-07 | 1984-12-13 | Maschinenfabrik Mikron AG, Bienne | Device for compensating for temperature-induced displacements of a work spindle relative to a rule attached to the spindle slide at a distance from the work spindle |
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| CN101844318A (en) | 2010-09-29 |
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