CN114161226A - Machine tool spindle thermal deformation detection device - Google Patents
Machine tool spindle thermal deformation detection device Download PDFInfo
- Publication number
- CN114161226A CN114161226A CN202111587006.XA CN202111587006A CN114161226A CN 114161226 A CN114161226 A CN 114161226A CN 202111587006 A CN202111587006 A CN 202111587006A CN 114161226 A CN114161226 A CN 114161226A
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- machine tool
- detection frame
- sensor
- tool spindle
- spindle
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 76
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0904—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool before or after machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Automatic Control Of Machine Tools (AREA)
Abstract
The invention provides a machine tool spindle thermal deformation detection device, which is used for detecting the thermal deformation of a machine tool spindle and comprises a base, a detection frame and a sensor, wherein the base is detachably arranged on a workbench of a machine tool, the detection frame is detachably arranged on the base, the sensor is inserted on the detection frame, the detection frame is roughly of a square hollow frame structure, the sensor is detachably arranged on the detection frame along the axial direction of the machine tool spindle in a divided manner, the upper layer and the lower layer are arranged, part of the sensor is arranged along the radial direction of the machine tool spindle, part of the sensor is arranged along the axial direction of the machine tool spindle, the sensor can detect the distance between the spindle and each sensor, when the machine tool spindle is inserted into the detection frame, each sensor detects the relative position of the spindle and detects the position deviation of the spindle by difference, the sensor is arranged around the spindle under the limitation of the detection frame, so that the deviation amount of the spindle in each direction can be detected, the precision degree of the spindle thermal deformation detection is ensured.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a thermal deformation detection device for a machine tool spindle.
Background
In the process of metal cutting, a spindle in a machine tool is influenced by the temperature in the environment, so that the spindle can slightly deform, when the machining precision reaches a high degree, the deformation of the spindle can influence the machining precision, the thermal deformation degree of the spindle of the machine tool needs to be detected, machining errors caused by temperature difference are compensated to a machining size, and in the process of detecting the thermal deformation of the spindle, a detection device cannot accurately judge the size change of the spindle, so that displacement deviation is generated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in the existing spindle detection device, the size change of the spindle cannot be accurately judged, and displacement deviation is generated.
The technical scheme adopted by the invention for solving the technical problems is as follows: the detection frame is roughly in a square hollow frame structure, the sensors are detachably arranged on the detection frame in an upper layer and a lower layer along the axial direction of the machine tool spindle, part of the sensors are arranged along the radial direction of the machine tool spindle, part of the sensors are arranged along the axial direction of the machine tool spindle, and the sensors can detect the distance from the spindle to each sensor.
Furthermore, a copper coil is inserted into the detection frame, and the sensor can be inserted into the copper coil in a matching manner.
Furthermore, the detection frame is further provided with a pressing screw arranged along the radial direction of the copper coil, the pressing screw is inserted into the detection frame in a matched mode, and the pressing screw abuts against and presses the sensor on the detection frame.
Furthermore, a through hole corresponding to the copper coil is formed in the detection frame, a rotation stopping bump is arranged on the hole wall of the through hole in a protruding mode, and when the copper coil penetrates into the through hole, the copper coil is clamped and embedded on the rotation stopping bump.
Furthermore, a pressing hole is formed in the detection frame, and the pressing screw is inserted into the pressing hole in a matched mode.
Furthermore, the detection frame has two layers, the detection frame is installed along the axial of lathe main shaft superposes in proper order on the base, the sensor is installed and is kept away from on the detection frame of base.
Further, the sensor is of the following types: EX-305 Eddy Current Displacement Meter.
Furthermore, a positioning screw is inserted into the base in a matching manner, a screw head part of the positioning screw is inserted into the workbench in a sliding manner, and a screw rod part of the positioning screw is inserted into the base in a matching manner.
The invention has the advantages that a base is arranged on a workbench of a machine tool to provide an installation position for a detection frame, a plurality of sensors are inserted in the detection frame, the sensors detect the main shaft through various angles, when the main shaft penetrates into the detection frame at a fixed point, the offset of the main shaft before each processing can be detected, namely the thermal deformation offset of the main shaft before each processing is detected, before the processing process is carried out, the starting position of the main shaft in the machine tool is adjusted, namely the tool diameter compensation of thermal deformation is carried out on the main shaft, and the main shaft can penetrate from the top of the detection frame after the processing is finished, so that the sensors can carry out multi-level detection along the axial direction of the main shaft, judge the inclination of the main shaft and improve the precision degree of each detection of the thermal deformation of the main shaft.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view, in cross section, of a thermal deformation detecting apparatus for a spindle of a machine tool according to the present invention;
FIG. 2 is a plan view of a spindle thermal deformation detecting apparatus of the machine tool shown in FIG. 1;
FIG. 3 is a front view of the spindle thermal deformation detecting apparatus of the machine tool shown in FIG. 2;
FIG. 4 is a cross-sectional view taken along A-A in FIG. 3;
in the figure: machine tool spindle thermal deformation detection device 100, spindle 200, base 10, detection frame 20, sensor 30, set screw 110, through hole 210, pressure hole 220, copper coil 230.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
As shown in fig. 1 to 4, the present invention provides a machine tool spindle thermal deformation detecting device 100, which is installed on a table of a machine tool, and the machine tool spindle thermal deformation detecting device 100 includes a base 10 detachably installed on the table of the machine tool, a detecting frame 20 detachably installed on the base 10, and a sensor 30 inserted on the detecting frame 20.
After the spindle 200 of the machine tool runs for a period of time, the spindle 200 is switched to measure the core rod and then is positioned and inserted into the detection frame 20, under the detection of the sensor 30, the distance between the spindle 200 of the machine tool and the end of the sensor 30 can be recorded, the distance is output to the machine tool, and the running stroke of the spindle 200 of the machine tool is compensated during running.
The base 10 is a generally square block structure, the positioning screw 110 is detachably inserted into the base 10, the head of the positioning screw 110 is inserted into the worktable of the machine tool, the screw shaft of the positioning screw 110 is inserted into the base 10, the base 10 is fixedly mounted on the machine tool through the positioning screw 110, and the relative position of the base 10 can be located through the spindle 200 of the machine tool, so that the positions of the detection frame 20 and the sensor 30 relative to the machine tool can be determined.
The detection frame 20 is a substantially square hollow frame structure, the detection frame 20 has at least two layers, the detection frame 20 can be sequentially stacked and installed on the base 10 along the axial direction of the machine tool spindle 200, the detection frame 20 is arranged away from the positioning screw 110, the sensor 30 is detachably installed on the detection frame 20, the plurality of sensors 30 are uniformly distributed along the circumferential direction of the detection frame 20, when a measuring core rod on the machine tool spindle 200 extends into the detection frame 20, the sensors 30 are respectively arranged around the measuring core rod, the distance between the measuring core rod and the detection frame 20 can be detected through the sensors 30, the distance between the measuring core rod and the detection frame 20 in each time is recorded, and the starting position of the machine tool spindle 200 is adjusted according to the recorded distance.
The sensor 30 is preferably of the type: the EX-305 eddy current displacement meter has a plurality of sensors 30, the sensors 30 are detachably horizontally mounted on the inspection frame 20 far from the base 10, and one of the sensors 30 is detachably inserted on the top surface of the inspection frame 20 near the base 10. Specifically, a plurality of sensors 30 are inserted into the side wall of each layer of the detection frame 20, and with the aid of the vertical shape of the detection frame 20, the angle between each sensor 30 can be ensured, the sensor 30 close to the base 10 is arranged along the axial direction of the spindle 200, and the sensor 30 arranged on the side wall of the detection frame 20 is arranged along the direction perpendicular to the spindle 200. Further, the sensor 30 on the side wall of the test frame 30 can detect displacement deviation in the X direction and the Y direction, and the sensor 30 on the top wall of the test frame 30 can detect displacement deviation of the spindle 200 in the Z direction.
The displacement deviation detection method includes the steps of recording data detected by each sensor 30 after a measuring core rod is inserted into the detection frame 20 for the first time, recording detection data of each sensor 30 again when the spindle 200 is inserted into the detection frame 20 again after running in the machine tool, making a difference between subsequent detection data and the first detection data, and adjusting the initial position of the spindle 200 in the machine tool according to the data obtained by making the difference, so that the machining precision of the spindle 200 of the machine tool is guaranteed.
More specifically, the sensors 30 are arranged on the detection frame 20 in two layers along the axial direction of the machine tool spindle 200, and according to data obtained by difference of the two layers of sensors 30, the inclination angles of the spindle 200 in the X direction and the Y direction can be further calculated, and according to the inclination angle of the spindle 200, further size adjustment is performed in the machining process of the machine tool.
Preferably, a plurality of through holes 210 corresponding to the sensors 30 are formed in the side wall of a cross beam of the detection frame 20, the cross beam is a cross bar of the detection frame 20 perpendicular to the machine tool spindle 200, rotation stopping bumps (not shown) are convexly arranged on the hole walls of the through holes 210, press holes 220 vertically penetrating through the through holes 210 are further formed in the cross beam, copper coils 230 for containing the sensors 30 are movably inserted in the through holes 210, the copper coils 230 are matched with the through holes 210 with the rotation stopping bumps, and the press holes 220 and the rotation stopping bumps are respectively formed in the hole walls of the through holes 210. After the sensor 30 is inserted into the through hole 210, a pressing screw is inserted into the pressing hole 220 in a threaded fit manner, and the copper coil 230 and the sensor 30 can be stably positioned in the through hole 210 under the abutting action of the pressing screw.
Preferably, the two layers of the test frame 20 are spliced through by the lengthened screws, and the test frame 20 is also fixedly installed on the base 10 by the lengthened screws, so far, the test frame 20 can be installed on the base 10 after being assembled.
When the machine tool spindle thermal deformation detection device 100 is used, firstly, the base 10 is installed on a workbench of a machine tool by using the positioning screw 110, under the effect of stable positioning of the positioning screw 110, the position of the base 10 relative to the machine tool can be fixed, then, the relative coordinate of the base 10 can be determined through the machine tool spindle 200, the machine tool spindle 200 can be ensured to be inserted into the detection frame 20 after machining is completed and a measuring mandrel can be switched, when the measuring mandrel is inserted into the detection frame 20, the sensor 30 can measure the surface of the measuring mandrel, the distance between each stage on the axial direction of the measuring mandrel and the sensor 30 is determined, so that the position of the measuring mandrel inserted into the detection frame 20 every time can be judged, displacement debugging is carried out on the machine tool spindle 200 by counting displacement deviation, and the machining precision of the machine tool is improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides a lathe main shaft heat altered shape detection device for detect the heat altered shape of lathe main shaft, its characterized in that: the detection device comprises a base detachably mounted on a workbench of the machine tool, a detection frame detachably mounted on the base and a sensor inserted in the detection frame, wherein the detection frame is of a square hollow frame structure, the sensor is detachably mounted on the detection frame in an upper layer and a lower layer along the axial direction of a machine tool spindle, part of the sensor is arranged along the radial direction of the machine tool spindle, part of the sensor is arranged along the axial direction of the machine tool spindle, and the sensor can detect the distance from the spindle to each sensor.
2. The machine tool spindle thermal deformation detecting device according to claim 1, characterized in that: the detection frame is inserted with a copper roll, and the sensor can be inserted into the copper roll in a matching way.
3. A machine tool spindle thermal deformation detecting device according to claim 2, characterized in that: the detection frame is further provided with a pressing screw arranged along the radial direction of the copper coil, the pressing screw is inserted into the detection frame in a matched mode, and the pressing screw abuts against and presses the sensor on the detection frame.
4. A machine tool spindle thermal deformation detecting device according to claim 2, characterized in that: the detection frame is provided with a through hole corresponding to the copper coil, a rotation stopping lug is arranged on the hole wall of the through hole in a protruding mode, and when the copper coil penetrates into the through hole, the copper coil is clamped and embedded on the rotation stopping lug.
5. A machine tool spindle thermal deformation detecting device according to claim 3, characterized in that: the detection frame is also provided with a pressing hole, and the pressing screw is inserted into the pressing hole in a matching manner.
6. The machine tool spindle thermal deformation detecting device according to claim 1, characterized in that: the detection frame has two layers, the detection frame is installed along the axial of lathe main shaft superposes in proper order on the base, the sensor is installed and is kept away from on the detection frame of base.
7. The machine tool spindle thermal deformation detecting device according to claim 1, characterized in that: the sensor is of the type: EX-305 Eddy Current Displacement Meter.
8. The machine tool spindle thermal deformation detecting device according to claim 1, characterized in that: the base is provided with a positioning screw in a matched and penetrating mode, the screw head portion of the positioning screw can be slidably inserted into the workbench, and the screw rod portion of the positioning screw is inserted into the base in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111587006.XA CN114161226B (en) | 2021-12-23 | 2021-12-23 | Machine tool spindle thermal deformation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111587006.XA CN114161226B (en) | 2021-12-23 | 2021-12-23 | Machine tool spindle thermal deformation detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114161226A true CN114161226A (en) | 2022-03-11 |
| CN114161226B CN114161226B (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111587006.XA Active CN114161226B (en) | 2021-12-23 | 2021-12-23 | Machine tool spindle thermal deformation detection device |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2437807A (en) * | 1943-11-08 | 1948-03-16 | Herbert Ltd A | Optical projection dividing head |
| CN102141391A (en) * | 2010-12-20 | 2011-08-03 | 哈尔滨海太精密量仪有限公司 | Cylinder hole comprehensive detector with function of detecting bulging quantity of cylinder sleeve end face |
| DE102011011415A1 (en) * | 2010-12-09 | 2012-06-14 | Indat Datensysteme + Industrieautomaten Gmbh | Method for checking cutting process of deburring tool used for drilling holes in workpiece e.g. spindle, involves applying electric voltage to produce error message, when there is no contact between cutting edges and contact plates |
| CN205021307U (en) * | 2015-06-09 | 2016-02-10 | 上海理工大学 | Main shaft gyration precision testing arrangement |
| CN106826394A (en) * | 2017-02-26 | 2017-06-13 | 邵阳学院 | Lathe main shaft diameter is to glitch detection method and device under machining state |
| CN110773807A (en) * | 2018-07-26 | 2020-02-11 | 株式会社迪思科 | Cutting device |
| CN113770807A (en) * | 2021-09-03 | 2021-12-10 | 西安交通大学 | Sensor fixing device for measuring thermal error of numerical control machine tool |
-
2021
- 2021-12-23 CN CN202111587006.XA patent/CN114161226B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2437807A (en) * | 1943-11-08 | 1948-03-16 | Herbert Ltd A | Optical projection dividing head |
| DE102011011415A1 (en) * | 2010-12-09 | 2012-06-14 | Indat Datensysteme + Industrieautomaten Gmbh | Method for checking cutting process of deburring tool used for drilling holes in workpiece e.g. spindle, involves applying electric voltage to produce error message, when there is no contact between cutting edges and contact plates |
| CN102141391A (en) * | 2010-12-20 | 2011-08-03 | 哈尔滨海太精密量仪有限公司 | Cylinder hole comprehensive detector with function of detecting bulging quantity of cylinder sleeve end face |
| CN205021307U (en) * | 2015-06-09 | 2016-02-10 | 上海理工大学 | Main shaft gyration precision testing arrangement |
| CN106826394A (en) * | 2017-02-26 | 2017-06-13 | 邵阳学院 | Lathe main shaft diameter is to glitch detection method and device under machining state |
| CN110773807A (en) * | 2018-07-26 | 2020-02-11 | 株式会社迪思科 | Cutting device |
| CN113770807A (en) * | 2021-09-03 | 2021-12-10 | 西安交通大学 | Sensor fixing device for measuring thermal error of numerical control machine tool |
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| Publication number | Publication date |
|---|---|
| CN114161226B (en) | 2024-02-23 |
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