CN114749995A - Swing type rotating shaft positioning precision detection method - Google Patents
Swing type rotating shaft positioning precision detection method Download PDFInfo
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- CN114749995A CN114749995A CN202210454580.6A CN202210454580A CN114749995A CN 114749995 A CN114749995 A CN 114749995A CN 202210454580 A CN202210454580 A CN 202210454580A CN 114749995 A CN114749995 A CN 114749995A
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- 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
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Abstract
The embodiment of the invention provides a method for detecting the positioning accuracy of a swing type rotating shaft, and relates to the field of machine tool rotating shaft accuracy detection. The method aims to improve the precision of the machine tool rotating shaft precision detection. The method for detecting the positioning accuracy of the swing type rotating shaft comprises the following steps: connecting a detection instrument to a machine tool spindle through a connecting shaft of a detection device; the detection instrument is coaxial with the machine tool rotating shaft by adjusting a Z-axis adjusting component, a Y-axis adjusting component, an X-axis adjusting component and an angle deviation adjusting component of the detection device; and measuring the precision of the machine tool rotating shaft through a detection instrument. The detection instrument is arranged on the main shaft of the machine tool through the detection device, the Z-axis adjusting assembly, the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly of the detection device are adjusted, so that the detection device and the rotating shaft of the machine tool are coaxial, the detection instrument is synchronous and coaxial with the rotating shaft of the machine tool, the detection instrument can detect the precision of the rotating shaft of the machine tool, and the installation error is reduced.
Description
Technical Field
The invention relates to the field of machine tool rotating shaft precision detection, in particular to a method for detecting the positioning precision of a swing type rotating shaft.
Background
At present, a common precision instrument for detecting the rotation center line of a numerical control machine tool is a laser wireless turntable or a polygon matched autocollimator. Because the rotary shaft has an angle problem, the two instruments are difficult to be directly installed on a machine tool for direct detection, the installation error is large, and the detection precision is influenced.
Disclosure of Invention
The object of the present invention includes, for example, providing a swing type rotary shaft positioning accuracy detecting method capable of improving accuracy of detection of a rotary shaft accuracy of a machine tool.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a method for detecting the positioning accuracy of a swing type rotating shaft, which comprises the following steps:
connecting a detection instrument to a main shaft of the machine tool through a connecting shaft of a detection device; one end of the connecting shaft is coaxially connected with the machine tool spindle, the other end of the connecting shaft is in threaded connection with a connecting hole formed in the angle wedge block, and the connecting hole is formed in the Z direction;
adjusting a Z-axis adjusting component, a Y-axis adjusting component, an X-axis adjusting component and an angle deviation adjusting component of the detecting device to enable the detecting instrument to be coaxial with a machine tool rotating shaft; the Z-axis adjusting assembly comprises the angle wedge block and the connecting shaft, the angle wedge block is provided with a connecting surface, and the connecting surface and the Z direction are arranged at a preset angle; the Y-axis adjusting assembly is connected with the connecting surface and is used for moving and fixing the angle wedge block along the Y direction in a first plane parallel to the connecting surface relative to the angle wedge block; the X-axis adjusting assembly is connected with the Y-axis adjusting assembly and used for moving and fixing relative to the Y-axis adjusting assembly along the X direction in a second plane parallel to the connecting surface; the angle deviation adjusting assembly is connected with the X-axis adjusting assembly and used for swinging and fixing relative to the center of the X-axis adjusting assembly; one side of the angle deviation adjusting assembly, which is far away from the X-axis adjusting assembly, is used for mounting the detection instrument;
and measuring the precision of the machine tool revolving shaft through the detection instrument.
In addition, the swing type rotating shaft positioning accuracy detection method provided by the embodiment of the invention can also have the following additional technical characteristics:
optionally, the step of making the detecting instrument coaxial with the machine tool rotation axis by adjusting the Z-axis adjusting assembly, the Y-axis adjusting assembly, the X-axis adjusting assembly, and the angular deviation adjusting assembly of the detecting device includes:
the center line of the detection device is superposed with the center line of the machine tool rotating shaft by operating the Z-axis adjusting assembly, the Y-axis adjusting assembly and the X-axis adjusting assembly;
the angle deviation adjusting assembly is perpendicular to the center line of the machine tool rotating shaft through combined operation of the angle deviation adjusting assembly and the first dial indicator;
and the Y-axis adjusting component, the X-axis adjusting component, the angle deviation adjusting component and the second dial indicator are combined to operate, so that the detection instrument is coaxial with the machine tool rotating shaft.
Optionally, the first dial indicator is fixed on a machine tool, and a free end of the first dial indicator abuts against one side of the angular deviation adjusting assembly, where the detecting instrument is installed;
the step of making the angle deviation adjusting assembly perpendicular to the center line of the machine tool rotating shaft by operating the angle deviation adjusting assembly and the first dial indicator in combination comprises;
rotating a rotating shaft of the machine tool through a hand wheel to obtain first detection data of the first dial indicator;
and adjusting the angle deviation adjusting assembly according to the first detection data until the first detection data reach first preset data.
Optionally, the second dial indicator is fixed on the machine tool, and a free end of the second dial indicator abuts against the circumferential part of the detection instrument;
the step of making the detecting instrument coaxial with the machine tool rotating shaft by combined operation of the Y-axis adjusting component, the X-axis adjusting component, the angle deviation adjusting component and the second dial indicator comprises:
rotating a machine tool rotating shaft through a hand wheel to obtain second detection data of the second dial indicator;
and adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly according to the second detection data until the second detection data reach second preset data.
Optionally, the detection instrument includes a laser wireless turntable, and the circumferential portion of the detection instrument includes a chassis outer circle of the laser wireless turntable.
Optionally, the detection instrument comprises a dodecagon body, the circumferential portion of the detection instrument comprising an inner wall of a central bore of the dodecagon body.
Optionally, the detection instrument includes a laser wireless rotary table, and the laser wireless rotary table is fixed to the angle deviation adjusting assembly;
the step of measuring the precision of the machine tool spindle by the detection instrument comprises the following steps:
and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the third detection data meet third preset data.
Optionally, the detecting instrument includes a dodecagonal body fixed to the angular deviation adjusting assembly and an autocollimator;
the step of measuring the precision of the machine tool spindle by the detection instrument comprises the following steps:
and obtaining fourth detection data according to the fact that any surface of the dodecagonal prism faces the optical axis of the autocollimator, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the fourth detection data meet fourth preset data.
Optionally, the angular deviation adjustment assembly comprises a deviation angle adjustment plate swingably connected to the X-axis adjustment assembly;
the step of making the angle deviation adjusting assembly perpendicular to the center line of the machine tool rotating shaft by the combined operation of the angle deviation adjusting assembly and the first dial gauge comprises;
and the deflection angle adjusting plate is perpendicular to the central line of the machine tool rotating shaft by the combined operation of the angle deviation adjusting assembly and the first dial indicator.
Optionally, a free end of the first percentage table abuts against the angling plate.
The method for detecting the positioning accuracy of the swing type rotating shaft has the beneficial effects that:
the method for detecting the positioning accuracy of the swing type rotating shaft comprises the following steps: connecting a detection instrument to a main shaft of the machine tool through a connecting shaft of a detection device; the detection instrument is coaxial with the machine tool rotating shaft by adjusting a Z-axis adjusting component, a Y-axis adjusting component, an X-axis adjusting component and an angle deviation adjusting component of the detection device; and measuring the precision of the machine tool rotating shaft by using a detection instrument.
The detection instrument is arranged on a machine tool spindle through the detection device, the detection device is coaxial with a machine tool rotating shaft by adjusting the Z-axis adjusting assembly, the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly of the detection device, the detection instrument is synchronous and coaxial with the machine tool rotating shaft, the detection instrument can detect the precision of the machine tool rotating shaft, the angle deviation error caused by the installation of the detection instrument is reduced, and the precision of the machine tool rotating shaft precision detection is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic view of a detection installation of a detection device according to an embodiment of the present invention;
fig. 2 is a block diagram illustrating a method for detecting the positioning accuracy of a swing type rotating shaft according to an embodiment of the present invention.
Icon: 100-a detection device; 110-a connecting shaft; 200-detection instrument.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 or explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The method for detecting the positioning accuracy of the swing type rotation shaft according to the present embodiment will be described in detail with reference to fig. 1 to 2.
Referring to fig. 1, an embodiment of the present invention provides a method for detecting positioning accuracy of a swing type rotating shaft, including the following steps:
in step S1, the inspection device 200 is connected to the machine tool spindle via the connecting shaft 110 of the inspection apparatus 100. One end of the connecting shaft 110 is coaxially connected with a main shaft of the machine tool, the other end of the connecting shaft 110 is in threaded connection with a connecting hole formed in the angle wedge block, and the connecting hole is formed in the Z direction.
Referring to fig. 1, the "center line of the machine tool spindle" is a center line indicated by a letter a in fig. 1. The "center line of the machine tool rotation axis" is the center line indicated by the letter B in fig. 1.
One end of the connecting shaft 110 is installed in a spindle hole of a machine tool, and the other end is fixed in a connecting hole of an angle wedge block installed in the detecting device 100. And (3) adjusting the direction and the distance of the connecting shaft 110 to ensure that the whole set of detection device 100 is over against the numerical control machine tool workbench, locking the connecting shaft 110 and the machine tool spindle and ensuring that the connecting shaft 110 and the detection device 100 are fastened. The connecting shaft 110 is in threaded connection with the connecting hole of the angle wedge block and can be adjusted according to the Z-direction distance of different machine tools.
Step S2, adjusting the Z-axis adjusting module, the Y-axis adjusting module, the X-axis adjusting module, and the angular deviation adjusting module of the detecting device 100 to make the detecting instrument 200 coaxial with the machine tool rotation axis; the Z-axis adjusting assembly comprises an angle wedge block and a connecting shaft 110, the angle wedge block is provided with a connecting surface, and the connecting surface and the Z direction are arranged at a preset angle; the Y-axis adjusting assembly is connected with the connecting surface and used for moving and fixing the relative angle wedge-shaped block in a first plane parallel to the connecting surface along the Y direction; the X-axis adjusting assembly is connected with the Y-axis adjusting assembly and used for moving and fixing along the X direction relative to the Y-axis adjusting assembly in a second plane parallel to the connecting surface; the angle deviation adjusting assembly is connected with the X-axis adjusting assembly and used for swinging and fixing relative to the center of the X-axis adjusting assembly; the side of the angular deviation adjustment assembly remote from the X-axis adjustment assembly is used to mount the inspection instrument 200.
Specifically, the Y-axis adjusting assembly comprises a connecting bottom plate, a transition plate and a Y-direction adjusting knob; the connecting bottom plate is fixed on the connecting surface of the angle wedge-shaped block; the transition plate is connected to the connecting bottom plate in a sliding mode along the Y direction, and the Y-direction adjusting knob is used for being abutted to the transition plate so as to stop the movement of the transition plate along the Y direction.
The X-axis adjusting assembly comprises a top plate and an X-direction adjusting knob; the top plate is connected to the transition plate in a sliding mode along the X direction; the X-direction adjusting knob is abutted with the top plate so as to stop the movement of the top plate along the X direction.
The angle deviation adjusting assembly comprises a deflection angle adjusting ball, a deflection angle adjusting plate and a deflection angle adjusting knob; the middle part of the deflection angle adjusting plate is connected to the middle part of the top plate in a swinging way through a deflection angle adjusting ball; the deflection angle adjusting knob is connected with the deflection angle adjusting plate and the top plate and used for fixing the deflection angle adjusting plate relative to the top plate; the side of the angling plate away from the top plate is used for mounting the inspection instrument 200.
The height is roughly adjusted by adjusting the connecting shaft 110 in the direction to ensure that the center line of a spindle hole of the machine tool, the center line of a rotary shaft of the machine tool and the center line of the detection device 100 are intersected. And adjusting the Y-axis adjusting assembly and the X-axis adjusting assembly to ensure that the center of the detection device 100 is superposed with the center line of the machine tool rotating shaft, synchronously enabling the detection instrument 200 to be coaxial with the machine tool rotating shaft, and then locking and fixing. And adjusting the angle deviation adjusting assembly to ensure that the rotation center line of the detecting instrument 200 is superposed with the rotation center line of the machine tool, and then locking the angle deviation adjusting assembly. And finishing the installation and debugging.
The preset angle is set according to the included angle between the main shaft of the machine tool and the rotating shaft of the machine tool and can be 30 degrees, 45 degrees or 60 degrees. The device can be used for detecting the positioning accuracy of the rotating shaft which forms an included angle of 30 degrees, 45 degrees, 60 degrees and the like with the vertical line.
In step S3, the accuracy of the machine tool spindle is measured by the inspection device 200.
The detection instrument 200 is arranged on a machine tool spindle through the detection device 100, the detection device 100 is coaxial with a machine tool rotating shaft by adjusting a Z-axis adjusting component, a Y-axis adjusting component, an X-axis adjusting component and an angle deviation adjusting component of the detection device 100, the detection instrument 200 is synchronous and coaxial with the machine tool rotating shaft, the detection instrument 200 can detect the precision of the machine tool rotating shaft, the angle deviation error caused by the installation of the detection instrument 200 is reduced, and the precision of the machine tool rotating shaft precision detection is improved.
In this embodiment, step S2 includes:
in step S21, the center line of the detection device 100 is aligned with the center line of the machine tool rotation axis by operating the Z-axis adjustment unit, the Y-axis adjustment unit, and the X-axis adjustment unit.
The detection instrument 200 is fixed on the detection device 100, and performs coarse adjustment to adjust the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly, so that the central line of the detection device 100 is coaxial with the rotation central line of the machine tool as far as possible, and forms a preset angle with the vertical line.
And step S22, operating the angle deviation adjusting assembly and the first dial indicator in a combined mode to enable the angle deviation adjusting assembly to be perpendicular to the center line of the machine tool rotating shaft.
In this embodiment, the first dial indicator is fixed on the machine tool, and the free end of the first dial indicator abuts against one side of the angular deviation adjusting assembly where the detecting instrument 200 is installed; step S22 includes;
step S221, rotating a rotating shaft of the machine tool through a hand wheel to obtain first detection data of a first dial indicator;
step S222, adjust the angle deviation adjustment assembly according to the first detection data until the first detection data reaches the first preset data. In the step of "the first detection data reaches the first preset data", the "first preset data" is a measurement standard, that is, under what conditions the data marked by the first percentage table meet, the next operation can be performed.
In this embodiment, the angle deviation adjusting assembly includes a deviation angle adjusting plate swingably connected to the X-axis adjusting assembly; step S22 includes; the angle adjusting plate is perpendicular to the center line of the machine tool rotating shaft through the combined operation of the angle deviation adjusting assembly and the first dial indicator.
In this embodiment, the free end of the first dial indicator abuts against the deflection angle adjusting plate.
Specifically, a magnetic gauge stand provided with a first dial indicator is fixed on a machine tool, the free end of the head of the first dial indicator is abutted against a deflection angle adjusting plate of the detection device 100, a rotating shaft of the hand wheel rotating machine tool is used for adjusting an angle deviation adjusting assembly, the pitch angle and the rolling angle error are reduced, and the deflection angle adjusting plate of the detection device 100 is perpendicular to the rotating center line of the machine tool.
And step S23, the Y-axis adjusting component, the X-axis adjusting component, the angle deviation adjusting component and the second dial indicator are combined to operate, so that the detecting instrument 200 is coaxial with the rotating shaft of the machine tool.
In this embodiment, the second dial indicator is fixed on the machine tool, and the free end of the second dial indicator abuts against the circumference of the detecting instrument 200; step S23 includes:
step S231, rotating the machine tool rotating shaft through the hand wheel to obtain second detection data of a second dial indicator;
step S232, the Y-axis adjusting component, the X-axis adjusting component and the angle deviation adjusting component are adjusted according to the second detection data until the second detection data reach second preset data. In the step of 'the second detection data reaches the second preset data', the 'second preset data' is a measurement standard, namely, the next operation can be performed under the condition that the data printed by the second dial indicator meets the requirement.
In this embodiment, the detecting instrument 200 includes a laser wireless turntable, and the circumferential portion of the detecting instrument 200 includes a chassis outer circle of the laser wireless turntable.
And fixing a magnetic gauge base provided with a second dial indicator on a machine tool, propping the free end of the head of the second dial indicator on the outer circle of the chassis of the laser wireless turntable, rotating the turntable by a hand wheel, adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly, and finely adjusting the concentricity of the laser wireless turntable and the rotation center line of the machine tool to minimize the maximum error of the concentricity.
In this embodiment, the detecting instrument 200 includes a dodecagonal body, and the circumferential portion of the detecting instrument 200 includes an inner wall of a central hole of the dodecagonal body.
The magnetic meter base provided with the second dial indicator is fixed on a machine tool, the free end of the head of the second dial indicator is propped against the inner wall of the center hole of the dodecagonal body, the rotating shaft of the rotary machine tool is used for adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly, and the concentricity of the dodecagonal body and the rotating center line of the machine tool is finely adjusted, so that the maximum error of the concentricity is as small as possible.
In this embodiment, the detection instrument 200 includes a laser wireless turntable fixed to the angle deviation adjustment assembly; step S3 includes:
and step S31, obtaining third detection data according to the laser wireless rotary table, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the third detection data meet third preset data. In the step that the third detection data reaches the third preset data, the third preset data is a measurement standard, namely, the next operation can be carried out under the condition that the data output by the laser wireless turntable meets the third preset data.
Starting a laser wireless turntable, supporting equipment and software, compiling a machine tool detection program according to detection requirements, setting laser turntable software, detecting the positioning precision and the repeated positioning precision of a rotating shaft, compensating the angle error of a numerical control machine tool, continuously running for 5 cycles, and detecting and evaluating the machine tool error.
In this embodiment, the detecting instrument 200 includes a dodecagonal prism fixed to the angular deviation adjusting assembly and an autocollimator; step S3 includes:
and step S32, obtaining fourth detection data according to the fact that any surface of the dodecagonal prism is just opposite to the optical axis of the autocollimator, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the fourth detection data meet fourth preset data. In the step of "the fourth detection data reaches the fourth preset data", the "fourth preset data" is a measurement standard, that is, under what conditions the data output by the autocollimator satisfies, the next operation can be performed.
Stopping the machine tool at a position of 0 degrees, finding a proper position to place the autocollimator, selecting any one surface of the dodecagonal prism to be opposite to an optical axis of the autocollimator, observing a view field of the autocollimator, finding a clear cross-shaped image, adjusting the autocollimator to enable the cross-shaped image to be located at the central position of a double-set line of the view field, and opening autocollimator software to enable a reading to be set to be zero.
According to the positioning accuracy detection method of the swing type rotating shaft provided by the embodiment, the positioning accuracy detection method of the swing type rotating shaft at least comprises the following embodiments:
the method and the device are illustrated by taking a swinging shaft with an included angle of 45 degrees between the central line of the rotating shaft and the vertical line, a machine tool spindle SHK interface and a detection instrument 200 as a laser wireless turntable as an example.
Firstly, one end of a connecting shaft 110 is arranged in a hole of a machine tool spindle, the other end of the connecting shaft is fixed on a detection device 100, the direction and the distance of the connecting shaft 110 are adjusted, the whole detection device 100 is enabled to be over against a numerical control machine tool workbench, the connecting shaft 110 and the machine tool spindle are locked, and the connecting shaft 110 and the detection device 100 are ensured to be fastened;
secondly, fixing the laser wireless rotary table on the detection device 100, roughly adjusting the coaxiality, and adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly to enable the central line of the detection device 100 to be coaxial with the rotation central line of the machine tool as far as possible and form an included angle of 45 degrees with the vertical line;
thirdly, fixing the magnetic meter base provided with the first dial indicator on a machine tool, enabling the free end of the head of the first dial indicator to be propped against a deflection angle adjusting plate of the detection device 100, adjusting an angle deviation adjusting assembly by using a rotating shaft of a rotary lathe, reducing the errors of a pitch angle and a rolling angle, and enabling the deflection angle adjusting plate of the detection device 100 to be vertical to the rotating center line of the machine tool;
fourthly, fixing a magnetic gauge stand provided with a second dial indicator on the machine tool, propping the free end of the head of the second dial indicator on the outer circle of the chassis of the laser wireless rotary table, rotating the rotary shaft of the machine tool by using a hand wheel, adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly, and finely adjusting the concentricity of the wireless rotary table and the rotary central line of the machine tool to ensure that the maximum error of the concentricity is as small as possible;
and fifthly, starting the laser wireless rotary table, supporting equipment and software, compiling a machine tool detection program according to detection requirements, setting the laser rotary table software, detecting the rotary shaft positioning precision and the repeated positioning precision, compensating the angle error of the numerical control machine tool, continuously running for 5 cycles, and detecting and evaluating the machine tool error.
If the dodecahedral prism is used as the detection instrument 200, the second step is directly carried out by the following method:
firstly, one end of a connecting shaft 110 is arranged in a hole of a machine tool spindle, the other end of the connecting shaft is fixed on a detection device 100, the direction and the distance of the connecting shaft 110 are adjusted, the whole detection device 100 is enabled to be over against a numerical control machine tool workbench, the connecting shaft 110 and the machine tool spindle are locked, and the connecting shaft 110 and the detection device 100 are ensured to be fastened;
fixing the dodecagonal prism on the detection device 100, roughly adjusting the coaxiality, and adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly to enable the central line of the detection device 100 to be coaxial with the rotation central line of the machine tool as far as possible and form an included angle of 45 degrees with a vertical line;
thirdly, fixing the magnetic meter base provided with the first dial indicator on a machine tool, enabling the free end of the head of the first dial indicator to be propped against a deflection angle adjusting plate of the detection device 100, adjusting an angle deviation adjusting assembly by using a rotating shaft of a rotary lathe, reducing the errors of a pitch angle and a rolling angle, and enabling the deflection angle adjusting plate of the detection device 100 to be vertical to the rotating center line of the machine tool;
fourthly, fixing a magnetic gauge stand provided with a second dial indicator on the machine tool, enabling the free end of the head of the second dial indicator to be propped against the inner wall of the center hole of the dodecagonal prism, adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly by using the rotating shaft of the rotary machine tool, and finely adjusting the concentricity of the prism and the rotating center line of the machine tool to enable the maximum error of the concentricity to be as small as possible;
fifthly, stopping the machine tool at the position of 0 degree, finding a proper position to place the autocollimator, selecting any one surface of the prism to be opposite to the optical axis of the autocollimator, observing the view field of the autocollimator, finding a clear cross-shaped image, adjusting the autocollimator to enable the cross-shaped image to be located at the central position of the double-set line of the view field, and opening autocollimator software to enable the reading to be zero;
sixthly, stopping the machine tool once every 30-degree operation, reading error values of corresponding angles from the autocollimator software, then rotating for a circle in the operation, and measuring back once under the same condition to obtain error values of corresponding angles of 30-degree and 60-degree … … 360-degree forward and return processes;
and seventhly, compensating the angle error of the numerical control machine, continuously running for 3-5 cycles, and detecting and evaluating the machine tool error.
The method for detecting the positioning accuracy of the swing type rotating shaft provided by the embodiment at least has the following advantages:
the detecting instrument 200 can be directly installed on a numerical control machine tool for detection through the detecting device 100, and can also reduce the angle deviation error caused by installing a precision instrument and improve the detection precision.
The detection instrument 200 can be used for detecting the positioning accuracy of the swing axis with the included angle of the vertical line of 30 degrees, 45 degrees, 60 degrees and the like by matching with the detection device 100.
The detection device 100 has good universality, and can directly detect the positioning accuracy of the rotation center line in the horizontal plane and the like by removing part of components.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method for detecting the positioning accuracy of a swing type rotating shaft is characterized by comprising the following steps:
connecting a detection instrument (200) to a machine tool spindle through a connecting shaft (110) of a detection device (100); one end of the connecting shaft (110) is coaxially connected with the main shaft of the machine tool, the other end of the connecting shaft (110) is in threaded connection with a connecting hole formed in the angle wedge block, and the connecting hole is formed in the Z direction;
the detection instrument (200) is coaxial with a machine tool rotating shaft by adjusting a Z-axis adjusting component, a Y-axis adjusting component, an X-axis adjusting component and an angle deviation adjusting component of the detection device (100); the Z-axis adjusting assembly comprises the angle wedge block and the connecting shaft (110), the angle wedge block is provided with a connecting surface, and the connecting surface and the Z direction are arranged at a preset angle; the Y-axis adjusting assembly is connected with the connecting surface and used for moving and fixing the angle wedge block along the Y direction in a first plane parallel to the connecting surface; the X-axis adjusting assembly is connected with the Y-axis adjusting assembly and used for moving and fixing relative to the Y-axis adjusting assembly along the X direction in a second plane parallel to the connecting surface; the angle deviation adjusting assembly is connected with the X-axis adjusting assembly and used for swinging and fixing relative to the center of the X-axis adjusting assembly; the side of the angle deviation adjusting assembly, which is far away from the X-axis adjusting assembly, is used for mounting the detection instrument (200);
and measuring the precision of the machine tool rotating shaft by the detection instrument (200).
2. The method for detecting the positioning accuracy of a swinging type rotary shaft according to claim 1, wherein:
the step of adjusting the Z-axis adjusting assembly, the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly of the detection device (100) to enable the detection instrument (200) to be coaxial with the machine tool rotating shaft comprises the following steps:
the center line of the detection device (100) is superposed with the center line of the machine tool rotating shaft by operating the Z-axis adjusting assembly, the Y-axis adjusting assembly and the X-axis adjusting assembly;
the angle deviation adjusting assembly is perpendicular to the center line of the machine tool rotating shaft through combined operation of the angle deviation adjusting assembly and the first dial indicator;
and the Y-axis adjusting component, the X-axis adjusting component, the angle deviation adjusting component and the second dial indicator are combined to operate, so that the detection instrument (200) is coaxial with the machine tool rotating shaft.
3. The method for detecting the positioning accuracy of a swinging type rotary shaft according to claim 2, wherein:
the first dial indicator is fixed on a machine tool, and the free end of the first dial indicator abuts against one side, where the angle deviation adjusting assembly is installed, of the detection instrument (200);
the step of making the angle deviation adjusting assembly perpendicular to the center line of the machine tool rotating shaft by the combined operation of the angle deviation adjusting assembly and the first dial gauge comprises;
rotating a rotating shaft of the machine tool through a hand wheel to obtain first detection data of the first dial indicator;
and adjusting the angle deviation adjusting assembly according to the first detection data until the first detection data reach first preset data.
4. The method for detecting the positioning accuracy of a swinging type rotary shaft according to claim 3, wherein:
the second dial indicator is fixed on the machine tool, and the free end of the second dial indicator abuts against the circumferential part of the detection instrument (200);
the step of making the detector (200) coaxial with the machine tool axis of rotation by operating the Y-axis adjustment assembly, the X-axis adjustment assembly, the angular deviation adjustment assembly, and the second dial indicator in combination comprises:
rotating a rotating shaft of the machine tool through a hand wheel to obtain second detection data of the second dial indicator;
and adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly according to the second detection data until the second detection data reach second preset data.
5. The method for detecting the positioning accuracy of the oscillating rotating shaft according to claim 4, wherein:
the detection instrument (200) comprises a laser wireless rotary table, and the circumferential part of the detection instrument (200) comprises a chassis excircle of the laser wireless rotary table.
6. The method for detecting the positioning accuracy of a swinging type rotary shaft according to claim 4, wherein:
the detection instrument (200) comprises a dodecagon body, and the circumferential portion of the detection instrument (200) comprises an inner wall of a central hole of the dodecagon body.
7. The method for detecting the positioning accuracy of the oscillating rotary shaft according to any one of claims 1 to 6, wherein:
the detection instrument (200) comprises a laser wireless rotary table, and the laser wireless rotary table is fixed on the angle deviation adjusting assembly;
the step of measuring the accuracy of the machine tool spindle by the detection instrument (200) comprises:
and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the third detection data meet third preset data.
8. The method for detecting the positioning accuracy of the oscillating rotary shaft according to any one of claims 1 to 6, wherein:
the detection instrument (200) comprises a dodecagonal body and an autocollimator, and the dodecagonal body is fixed to the angular deviation adjusting assembly;
the step of measuring the accuracy of the machine tool spindle by the detection instrument (200) comprises:
and obtaining fourth detection data according to the fact that any surface of the dodecagonal prism faces the optical axis of the autocollimator, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the fourth detection data meet fourth preset data.
9. The method for detecting the positioning accuracy of a swinging type rotary shaft according to claim 3, wherein:
the angle deviation adjusting assembly comprises a deflection angle adjusting plate which is connected to the X-axis adjusting assembly in a swinging mode;
the step of making the angle deviation adjusting assembly perpendicular to the center line of the machine tool rotating shaft by the combined operation of the angle deviation adjusting assembly and the first dial gauge comprises;
and the deflection angle adjusting plate is perpendicular to the central line of the machine tool rotating shaft by the combined operation of the angle deviation adjusting assembly and the first dial indicator.
10. The method for detecting the positioning accuracy of a swinging type rotary shaft according to claim 9, wherein:
the free end of the first dial indicator abuts against the deflection angle adjusting plate.
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| CN116492155A (en) * | 2023-04-26 | 2023-07-28 | 上海新纪元机器人有限公司 | Active and passive hybrid damping stretcher and control method thereof |
| CN117123839A (en) * | 2023-10-26 | 2023-11-28 | 上海诺倬力机电科技有限公司 | Swing angle milling head angle adjusting method |
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