CN201324962Y - Temperature compensation system for large-scale numerical control machine - Google Patents
Temperature compensation system for large-scale numerical control machine Download PDFInfo
- Publication number
- CN201324962Y CN201324962Y CNU2008201571965U CN200820157196U CN201324962Y CN 201324962 Y CN201324962 Y CN 201324962Y CN U2008201571965 U CNU2008201571965 U CN U2008201571965U CN 200820157196 U CN200820157196 U CN 200820157196U CN 201324962 Y CN201324962 Y CN 201324962Y
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- numerical control
- temperature compensation
- control machine
- compensation system
- temperature
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Abstract
The utility model discloses a temperature compensation system for a large-scale numerical control machine. The large-scale numerical control machine comprises a machine tool, a servo motor and a driver driving the servo motor. The temperature compensation system comprises a plurality of temperature sensors, a transmitter, a PLC module and an axis module, wherein the temperature sensors are mounted on the machine, the transmitter, the PLC module and the axis module are sequentially connected with the temperature sensors, and one end of the axis module is connected with a numerical control unit for temperature compensation while the other end is connected with the driver. The utility model outputs compensation to the driver via temperature compensation to drive the servo motor to compensate, which overcomes shortages that numerical control machines are easy to cause errors when being used in common workshop environments, can execute effective temperature compensation, and increases position precision and processing precision of the numerical control machines.
Description
Technical field
The utility model relates to a kind of temperature compensation system, relates in particular to a kind of temperature compensation system that is used for large-size numerical control machine.
Technical background
Metal material has the character of " expanding with heat and contract with cold ", and this characteristic is described with thermal coefficient of expansion on physics usually.At present, drive disk assemblies such as guide rail basic parts such as the lathe bed of Digit Control Machine Tool, column, planker and ball-screw all are to be made by metal material, because the variation of heating, moving component frictional heating and the environment temperature etc. of drive motors, all can produce additive error to the machine tool motion shaft position, this will directly influence the positioning accuracy of lathe, thereby influence the machining accuracy of workpiece.
For the Digit Control Machine Tool that uses under the common workshop condition condition especially long heavy duty machine tools of stroke, the influence of thermal coefficient of expansion more can not be ignored.Such as concerning the feed shaft of 5 meters of strokes, the thermal coefficient of expansion of metal material is 10ppm (per 1 degree of the every 1m of 10 μ m/), and the every rising 1 of temperature is spent in theory, and the X-axis of the stroke of 5m is " it is long to expand " 50 μ m just.The influence of the temperature difference per day and the winter and summer temperature difference is just well imagined.Therefore high precision machine tool requires to make under the constant temperature of regulation or use, and the Digit Control Machine Tool that usual terms uses down must take measures to eliminate its error for guaranteeing higher positioning accuracy and machining accuracy.
Summary of the invention
The utility model is to overcome the defective of prior art, and a kind of temperature compensation system that is used for large-size numerical control machine is provided, and it can carry out the efficient temperature compensation, improves the positioning accuracy and the machining accuracy of Digit Control Machine Tool.
The technical scheme that realizes above-mentioned purpose is: a kind of temperature compensation system that is used for large-size numerical control machine, large-size numerical control machine comprises the driver of lathe, servomotor, driving servomotor, wherein, comprise some transmitter, PLC module, axle modules that are installed on temperature sensor on the described lathe, link to each other successively with described temperature sensor, one end of described axle module links to each other with a numerical control unit that carries out temperature-compensating, and the other end links to each other with described driver.
The above-mentioned temperature compensation system that is used for large-size numerical control machine, wherein, described PLC module comprises an A/D interface, this A/D interface links to each other to carry out mould/number conversion with described transmitter.
The above-mentioned temperature compensation system that is used for large-size numerical control machine, wherein, described PLC module all links to each other with described axle module with the transmission data by EBI with numerical control unit.
The above-mentioned temperature compensation system that is used for large-size numerical control machine, wherein, described axle module includes an output analog signals and accepts the position feedback module of drive location feedback signal for the D/A modular converter and of driver.
The beneficial effects of the utility model are: the utility model obtains the actual temperature curve of each position of lathe by temperature sensor, by temperature-compensating compensation rate is exported to driver, drive servomotor and carry out position compensation, this system has overcome the shortcoming that the Digit Control Machine Tool that uses easily produces error under common workshop condition condition, improved machining accuracy and positioning accuracy.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for the temperature compensation system of large-size numerical control machine.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, there is shown a kind of temperature compensation system that is used for large-size numerical control machine of the present utility model, large-size numerical control machine comprises lathe 8, servomotor 7, drives the driver 6 of servomotor 7, the utility model comprises some transmitter 2, PLC module 3, axle modules 4 that are installed on temperature sensor 1 on the lathe 8, link to each other successively with temperature sensor 1, the numerical control unit 5 that one end of axle module 4 and carries out temperature-compensating links to each other, the other end links to each other with driver 6, in the present embodiment, temperature sensor 1 adopts the PT100 sensor.
Operation principle of the present utility model is: a large amount of temperature sensor 1 need be installed on lathe 8 each positions, to obtain the actual temperature curve map of lathe 8 each position, and the position error of machine coordinates axle varies with temperature the additional certain deviation of meeting, can measure corresponding position error curve for fixed temperature to each; By transmitter 2 temperature sensor 1 signal is transferred to the A/D interface 31 of PLC module 3, carries out mould/number conversion, precision is 12 a digital quantity; The EBI 9 of PLC module 3 and the EBI 9 of numerical control unit are sent to axle module 4 with data; Numerical control unit 5 carries out temperature-compensating and calculates; Result of calculation is sent to axle module 4 by bus, and the D/A modular converter 41 on the axle module 4 converts the analog quantity of 16 precision to, gives driver 6, drives servomotor 7 and carries out position compensation.
Above embodiment is only for the usefulness of explanation the utility model, but not to the restriction of the utility model protection domain.Relevant those skilled in the art; under the situation that does not break away from spirit and scope of the present utility model; can also make various conversion or modification, and the technical scheme that all are equal to should belong to also within the category of the utility model protection, is limited by each claim.
Claims (4)
1. temperature compensation system that is used for large-size numerical control machine, large-size numerical control machine comprises the driver of lathe, servomotor, driving servomotor, it is characterized in that, comprise some transmitter, PLC module, axle modules that are installed on temperature sensor on the described lathe, link to each other successively with described temperature sensor, one end of described axle module links to each other with a numerical control unit that carries out temperature-compensating, and the other end links to each other with described driver.
2. the temperature compensation system that is used for large-size numerical control machine according to claim 1 is characterized in that, described PLC module comprises an A/D interface, and this A/D interface links to each other to carry out mould/number conversion with described transmitter.
3. the temperature compensation system that is used for large-size numerical control machine according to claim 1 is characterized in that, described PLC module all links to each other with described axle module with the transmission data by EBI with numerical control unit.
4. the temperature compensation system that is used for large-size numerical control machine according to claim 1, it is characterized in that described axle module includes an output analog signals and accepts the position feedback module of drive location feedback signal for the D/A modular converter and of driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201571965U CN201324962Y (en) | 2008-12-16 | 2008-12-16 | Temperature compensation system for large-scale numerical control machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201571965U CN201324962Y (en) | 2008-12-16 | 2008-12-16 | Temperature compensation system for large-scale numerical control machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201324962Y true CN201324962Y (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201571965U Expired - Fee Related CN201324962Y (en) | 2008-12-16 | 2008-12-16 | Temperature compensation system for large-scale numerical control machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN201324962Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070406A (en) * | 2014-06-23 | 2014-10-01 | 广东工业大学 | Device and method for compensating composition error of main shaft in real time |
| CN106933186A (en) * | 2015-12-31 | 2017-07-07 | 沈阳高精数控智能技术股份有限公司 | A kind of digital control system precision based on arm processor keeps method for designing |
-
2008
- 2008-12-16 CN CNU2008201571965U patent/CN201324962Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070406A (en) * | 2014-06-23 | 2014-10-01 | 广东工业大学 | Device and method for compensating composition error of main shaft in real time |
| CN104070406B (en) * | 2014-06-23 | 2016-08-24 | 广东工业大学 | A kind of main shaft composition error real-time compensation apparatus and method |
| CN106933186A (en) * | 2015-12-31 | 2017-07-07 | 沈阳高精数控智能技术股份有限公司 | A kind of digital control system precision based on arm processor keeps method for designing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20101216 |