CN114749995B - Swing type rotary shaft positioning precision detection method - Google Patents
Swing type rotary shaft positioning precision detection method Download PDFInfo
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- CN114749995B CN114749995B CN202210454580.6A CN202210454580A CN114749995B CN 114749995 B CN114749995 B CN 114749995B CN 202210454580 A CN202210454580 A CN 202210454580A CN 114749995 B CN114749995 B CN 114749995B
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- 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
Abstract
The embodiment of the invention provides a method for detecting the positioning precision of a swinging type rotary shaft, and relates to the field of machine tool rotary shaft precision detection. The method aims to improve the precision of precision detection of the machine tool rotating shaft. The method for detecting the positioning precision of the swing type rotary shaft comprises the following steps: connecting a detection instrument to a main shaft of a machine tool through a connecting shaft of a 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 instrument is coaxial with the rotating shaft of the machine tool; and measuring the precision of the rotating shaft of the machine tool by a detection instrument. The detecting instrument is arranged on the machine tool spindle through the detecting device, the detecting device is coaxial with the machine tool rotating shaft through adjusting the Z-axis adjusting component, the Y-axis adjusting component, the X-axis adjusting component and the angle deviation adjusting component of the detecting device, the detecting instrument is synchronous with the machine tool rotating shaft and coaxial, the detecting instrument can detect the precision of the machine tool rotating shaft, and the installation error is reduced.
Description
Technical Field
The invention relates to the field of precision detection of a machine tool rotating shaft, in particular to a method for detecting positioning precision of a swinging 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 auto-collimator. Because the rotating shaft has an angle problem, the two instruments are difficult to be directly installed on a machine tool to directly detect, and the installation error is large, so that the detection precision is affected.
Disclosure of Invention
The invention aims to provide a swing type rotary shaft positioning accuracy detection method, which can improve the accuracy of machine tool rotary shaft accuracy detection.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a method for detecting the positioning precision of a swing type rotary shaft, which comprises the following steps:
connecting a detection instrument to a main shaft of a 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;
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 instrument is coaxial with the rotating shaft of the machine tool; the Z-axis adjusting assembly comprises the angle wedge block and the connecting shaft, wherein 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; the X-axis adjusting assembly is connected with the Y-axis adjusting assembly and is used for moving and fixing the X-axis adjusting assembly along the X direction in a second plane parallel to the connecting surface relative to the Y-axis adjusting assembly; the angle deviation adjusting component is connected with the X-axis adjusting component and is used for swinging and fixing relative to the center of the X-axis adjusting component; one side of the angle deviation adjusting component, which is far away from the X-axis adjusting component, is used for installing the detecting instrument;
and measuring the precision of the machine tool rotating shaft through the detecting instrument.
In addition, the method for detecting the positioning accuracy of the swing type rotary shaft 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 rotating shaft by adjusting the Z-axis adjusting component, the Y-axis adjusting component, the X-axis adjusting component and the angular deviation adjusting component of the detecting device includes:
the central line of the detection device is overlapped with the central line of the rotary shaft of the machine tool by operating the Z-axis adjusting assembly, the Y-axis adjusting assembly and the X-axis adjusting assembly;
the angle deviation adjusting assembly and the first dial indicator are combined and operated, so that the angle deviation adjusting assembly is perpendicular to the center line of the machine tool rotating shaft;
and the detection instrument is coaxial with the machine tool rotating shaft through combined operation of the Y-axis adjusting assembly, the X-axis adjusting assembly, the angle deviation adjusting assembly and the second dial indicator.
Optionally, the first dial indicator is fixed on a machine tool, and the free end of the first dial indicator is abutted to one side of the angle deviation adjusting assembly, on which the detecting instrument is mounted;
the step of enabling the angle deviation adjusting component to be perpendicular to the center line of the machine tool rotating shaft through combined operation of the angle deviation adjusting component and the first dial indicator comprises the following steps of;
the rotary shaft of the machine tool is rotated through a hand wheel, and first detection data of the first dial indicator are obtained;
and adjusting the angle deviation adjusting component according to the first detection data until the first detection data reach first preset data.
Optionally, the second dial indicator is fixed on a machine tool, and the free end of the second dial indicator is abutted to the circumference part of the detecting instrument;
the step of enabling the detecting instrument to be coaxial with the machine tool rotating shaft through combined operation of the Y-axis adjusting assembly, the X-axis adjusting assembly, the angle deviation adjusting assembly and the second dial indicator comprises the following steps of:
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 detecting instrument includes a laser wireless turntable, and the circumferential portion of the detecting instrument includes a chassis outer circle of the laser wireless turntable.
Optionally, the detecting instrument includes a dodecagon, and the circumferential portion of the detecting instrument includes an inner wall of a central hole of the dodecagon.
Optionally, the detecting instrument includes a laser wireless turntable, and the laser wireless turntable is fixed to the angle deviation adjusting component;
the step of measuring the precision of the machine tool rotating shaft through the detecting instrument comprises the following steps:
and obtaining third detection data according to the laser wireless turntable, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the third detection data meets third preset data.
Optionally, the detecting instrument includes a dodecagon body and an autocollimator, the dodecagon body being fixed to the angular deviation adjusting component;
the step of measuring the precision of the machine tool rotating shaft through the detecting instrument comprises the following steps:
and obtaining fourth detection data according to the fact that any surface of the dodecagon body is right opposite to the optical axis of the auto-collimator, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the fourth detection data meets fourth preset data.
Optionally, the angle deviation adjusting assembly includes a deviation angle adjusting plate swingably connected to the X-axis adjusting assembly;
the step of enabling the angle deviation adjusting component to be perpendicular to the center line of the machine tool rotating shaft through combined operation of the angle deviation adjusting component and the first dial indicator comprises the following steps of;
and the deflection angle adjusting plate is perpendicular to the central line of the machine tool rotating shaft through combined operation of the angle deviation adjusting assembly and the first dial indicator.
Optionally, the free end of the first dial indicator abuts against the deflection angle adjusting plate.
The method for detecting the positioning accuracy of the swing type rotary shaft has the advantages that:
the method for detecting the positioning precision of the swing type rotary shaft comprises the following steps: connecting a detection instrument to a main shaft of a machine tool through a connecting shaft of a 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 instrument is coaxial with the rotating shaft of the machine tool; and measuring the precision of the rotating shaft of the machine tool by a detection instrument.
The detecting instrument is arranged on the machine tool spindle through the detecting device, and is coaxial with the machine tool rotating shaft through adjusting the Z-axis adjusting component, the Y-axis adjusting component, the X-axis adjusting component and the angle deviation adjusting component of the detecting device, so that the detecting instrument can synchronously detect the precision of the machine tool rotating shaft, the angle deviation error caused by the installation of the detecting instrument is reduced, and the precision of the precision detection of the machine tool rotating shaft is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a detection installation of a detection device according to an embodiment of the present invention;
fig. 2 is a block diagram of steps of a method for detecting positioning accuracy of a swing-type rotating shaft according to an embodiment of the present invention.
Icon: 100-detecting means; 110-a connecting shaft; 200-detecting instrument.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a 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 invention provides a method for detecting positioning accuracy of a swing-type rotating shaft, which includes the following steps:
in step S1, the detecting device 200 is connected to the machine tool spindle via the connecting shaft 110 of the detecting device 100. One end of the connecting shaft 110 is coaxially connected with the spindle 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 the center line indicated by the letter a in fig. 1. The "center line of the machine tool turning shaft" is the center line indicated by 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. The direction and distance of the connecting shaft 110 are adjusted, so that the whole detection device 100 is opposite to a workbench of the numerical control machine tool, the connecting shaft 110 and a main shaft of the machine tool are locked, and 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 different Z-direction distances of the machine tool.
Step S2, adjusting a Z-axis adjusting assembly, a Y-axis adjusting assembly, an X-axis adjusting assembly and an angle deviation adjusting assembly of the detection device 100 to enable the detection instrument 200 to be coaxial with a rotating shaft of the machine tool; the Z-axis adjusting assembly comprises an angle wedge block and a connecting shaft 110, wherein the angle wedge block is provided with a connecting surface, and the connecting surface is arranged at a preset angle with the Z direction; the Y-axis adjusting assembly is connected with the connecting surface and is used for moving and fixing the relative angle wedge block in a first plane parallel to the connecting surface along the Y direction; the X-axis adjusting component is connected with the Y-axis adjusting component and is used for moving and fixing along the X direction in a second plane parallel to the connecting surface relative to the Y-axis adjusting component; the angle deviation adjusting assembly is connected with the X-axis adjusting assembly and is used for swinging and fixing relative to the center of the X-axis adjusting assembly; the side of the angular misalignment adjusting assembly remote from the X-axis adjusting 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 block; the transition plate is slidably connected to the connection base plate along the Y direction, and the Y-direction adjusting knob is used for abutting against 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 slidably connected to the transition plate 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 component comprises an offset angle adjusting ball, an offset angle adjusting plate and an offset angle adjusting knob; the middle part of the deflection angle adjusting plate is connected with 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 is used for fixing the deflection angle adjusting plate relative to the top plate; the side of the yaw angle adjustment plate remote from the top plate is used for mounting the detection instrument 200.
The height coarse adjustment is performed by the axial adjustment of the connecting shaft 110, so that the center line of the spindle hole of the machine tool, the center line of the rotating shaft of the machine tool and the center line of the detection device 100 are intersected. The Y-axis adjusting assembly and the X-axis adjusting assembly are adjusted to ensure that the center of the detecting device 100 coincides with the center line of the rotating shaft of the machine tool, and the detecting instrument 200 is coaxial with the rotating shaft of the machine tool in a synchronous manner and then locked and fixed. And the angle deviation adjusting component is adjusted to ensure that the rotation center line of the detecting instrument 200 coincides with the rotation center line of the machine tool, and then the angle deviation adjusting component is locked. And (5) finishing 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 and 60 degrees. The device can be used for detecting the positioning accuracy of a rotating shaft forming 30 degrees, 45 degrees, 60 degrees and the like with a vertical wire clamping angle.
Step S3, measuring the precision of the machine tool rotating shaft by the detecting instrument 200.
The detecting instrument 200 is installed on a machine tool spindle through the detecting device 100, and the Z-axis adjusting assembly, the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly of the detecting device 100 are adjusted, so that the detecting device 100 is coaxial with a machine tool rotating shaft, the detecting instrument 200 is coaxial with the machine tool rotating shaft synchronously, the detecting instrument 200 can detect the precision of the machine tool rotating shaft, the angle deviation error caused by installing the detecting 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 coincides with the center line of the machine tool rotating shaft by operating the Z-axis adjusting unit, the Y-axis adjusting unit, and the X-axis adjusting unit.
The detecting instrument 200 is fixed on the detecting device 100, coarse adjustment is performed, and the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly are adjusted, so that the center line of the detecting device 100 is coaxial with the rotation center line of the machine tool as much as possible, and a preset angle is formed between the center line and the vertical line.
And S22, combining and operating the angle deviation adjusting assembly and the first dial indicator to enable the angle deviation adjusting assembly to be perpendicular to the center line of the rotary shaft of the machine tool.
In this embodiment, the first dial indicator is fixed on the machine tool, and the free end of the first dial indicator is abutted to one side of the angle deviation adjusting component where the detecting instrument 200 is installed; step S22 includes;
step S221, rotating a machine tool rotating shaft through a hand wheel to obtain first detection data of a first dial indicator;
step S222, the angle deviation adjusting component is adjusted according to the first detection data until the first detection data reaches the first preset data. In the case that the first detection data reach the first preset data, the "first preset data" is a measurement standard, that is, the next operation can be performed under what condition the data marked by the first dial indicator meet.
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 deflection angle adjusting plate 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.
In this embodiment, the free end of the first dial indicator abuts against the deflection angle adjusting plate.
Specifically, the magnetic gauge stand provided with the first dial indicator is fixed on the machine tool, so that the free end of the first dial indicator head is propped against the deflection angle adjusting plate of the detection device 100, the rotation shaft of the machine tool is rotated by a hand, the angle deviation adjusting assembly is adjusted, pitch angle and rolling angle errors are reduced, and the deflection angle adjusting plate of the detection device 100 is vertical to the rotation center line of the machine tool.
In step S23, the Y-axis adjusting unit, the X-axis adjusting unit, the angle deviation adjusting unit, and the second dial indicator are combined to operate so that the detecting instrument 200 is coaxial with the machine tool rotating shaft.
In this embodiment, the second dial indicator is fixed on the machine tool, and the free end of the second dial indicator is abutted to the circumference of the detecting instrument 200; step S23 includes:
step S231, rotating a machine tool rotating shaft through a hand wheel to obtain second detection data of a second dial indicator;
and S232, 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 the second preset data. In the second detection data reaching 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 marked by the second dial indicator meets the condition.
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.
The magnetic gauge stand 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 outer circle of a chassis of the laser wireless turntable, the rotating shaft of the machine tool is rotated by a hand, the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly are adjusted, and the concentricity of the laser wireless turntable 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 detecting instrument 200 includes a dodecagon, and the circumferential portion of the detecting instrument 200 includes an inner wall of a center hole of the dodecagon.
The magnetic gauge stand with the second dial indicator is fixed on a machine tool, the free end of the second dial indicator head is propped against the inner wall of the central hole of the dodecagon body, the rotary shaft of the machine tool is rotated by a hand, and the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly are adjusted to finely adjust the concentricity of the dodecagon body and the rotary central line of the machine tool, so that the maximum error of the concentricity is as small as possible.
In this embodiment, the detecting instrument 200 includes a laser wireless turntable, which is fixed to the angle deviation adjusting component; the step S3 comprises the following steps:
step S31, obtaining third detection data according to the laser wireless turntable, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the third detection data meets third preset data. In the third detection data reaching the third preset data, the third preset data is a measurement standard, namely, the next operation can be performed under the condition that the data output by the laser wireless turntable meets the condition.
Starting a laser wireless turntable, supporting equipment and software, writing a machine tool detection program according to detection requirements, setting laser turntable software, detecting the positioning precision and 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 error of the machine tool.
In this embodiment, the detecting instrument 200 includes a dodecagon body and an autocollimator, and the dodecagon body is fixed on the angle deviation adjusting component; the step S3 comprises the following steps:
and S32, obtaining fourth detection data according to the fact that any surface of the dodecagon body is right opposite to the optical axis of the auto-collimator, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the fourth detection data meets fourth preset data. In the "fourth detection data reach fourth preset data", the "fourth preset data" is a measurement standard, that is, the next operation can be performed under what condition the data output by the autocollimator meets.
Stopping the machine tool at the 0-degree position, locating an autocollimator at a proper position, selecting any one surface of the dodecagon body to be opposite to the optical axis of the autocollimator, observing the view field of the autocollimator, finding out a clear cross-shaped image, adjusting the autocollimator to enable the cross-shaped image to be located at the center position of double sleeve lines of the view field, opening autocollimator software, and enabling the reading to be zero.
According to the method for detecting the positioning accuracy of the swing type rotary shaft provided by the embodiment, the method for detecting the positioning accuracy of the swing type rotary shaft at least comprises the following embodiments:
taking the swinging shaft with the center line of the rotating shaft forming an angle of 45 degrees with the vertical wire clamping angle as an example, the machine tool main shaft SHK interface and the detection instrument 200 as a laser wireless turntable, the method and the device are described.
Firstly, one end of a connecting shaft 110 is arranged in a main shaft hole of a machine tool, the other end of the connecting shaft 110 is fixed on a detection device 100, and the direction and the distance of the connecting shaft 110 are adjusted, so that the whole set of detection device 100 is opposite to a workbench of the numerical control machine tool, the connecting shaft 110 and the main shaft of the machine tool are locked, and the connecting shaft 110 and the detection device 100 are fastened;
secondly, fixing a laser wireless turntable on the detection device 100, performing rough adjustment on coaxiality, and adjusting a Y-axis adjusting assembly, an X-axis adjusting assembly and an angle deviation adjusting assembly to enable the center line of the detection device 100 to be coaxial with the rotation center line of the machine tool as much as possible and form an included angle of 45 degrees with a vertical line;
thirdly, fixing a magnetic gauge stand provided with a first dial indicator on a machine tool, enabling the free end of a first dial indicator head to prop against an deflection angle adjusting plate of the detection device 100, rotating a turning shaft of the machine tool by hand, adjusting an angle deviation adjusting assembly, reducing pitch angle and rolling angle errors, and enabling the deflection angle adjusting plate of the detection device 100 to be perpendicular to the turning 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 second dial indicator on the outer circle of the chassis of the laser wireless turntable, rotating the turntable by a rotary shaft of the hand wheel, adjusting a Y-axis adjusting assembly, an X-axis adjusting assembly and an angle deviation adjusting assembly, and finely adjusting the concentricity of the wireless turntable and the rotary center line of the machine tool to ensure that the maximum error of the concentricity is as small as possible;
and fifthly, starting a laser wireless turntable, supporting equipment and software, writing a machine tool detection program according to detection requirements, setting laser turntable software, detecting the positioning precision and repeated positioning precision of a rotating shaft, compensating the angle error of the numerical control machine tool, continuously running for 5 cycles, and detecting and evaluating the error of the machine tool.
If dodecahedron is used as the detecting instrument 200, the detection is directly performed in the second step, and the method is as follows:
firstly, one end of a connecting shaft 110 is arranged in a main shaft hole of a machine tool, the other end of the connecting shaft 110 is fixed on a detection device 100, and the direction and the distance of the connecting shaft 110 are adjusted, so that the whole set of detection device 100 is opposite to a workbench of the numerical control machine tool, the connecting shaft 110 and the main shaft of the machine tool are locked, and the connecting shaft 110 and the detection device 100 are fastened;
secondly, fixing the dodecagon on the detection device 100, performing rough adjustment on coaxiality, and adjusting a Y-axis adjusting assembly, an X-axis adjusting assembly and an angle deviation adjusting assembly to enable the center line of the detection device 100 to be coaxial with the rotation center line of the machine tool as much as possible and form an included angle of 45 degrees with a vertical line;
thirdly, fixing a magnetic gauge stand provided with a first dial indicator on a machine tool, enabling the free end of a first dial indicator head to prop against an deflection angle adjusting plate of the detection device 100, rotating a turning shaft of the machine tool by hand, adjusting an angle deviation adjusting assembly, reducing pitch angle and rolling angle errors, and enabling the deflection angle adjusting plate of the detection device 100 to be perpendicular to the turning 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 gauge head of the second dial indicator against the inner wall of the central hole of the dodecagon body, rotating the rotary shaft of the machine tool by using a hand, and adjusting a Y-axis adjusting assembly, an X-axis adjusting assembly and an angle deviation adjusting assembly to finely adjust the concentricity of the dodecagon body and the rotary central line of the machine tool so as to ensure that the maximum error of the concentricity is as small as possible;
fifthly, stopping the machine tool at a position of 0 degrees, finding a proper position, placing an autocollimator, selecting any one surface of a 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 positioned at the center position of double sleeve lines of the view field, and opening autocollimator software to enable the reading to be set to zero;
step six, each time the machine tool runs for 30 degrees, the error value of the corresponding angle is read from the auto-collimator software, and then the machine tool rotates for one circle with the next running, and the machine tool is returned to the machine tool once under the same condition, so that the error value of the corresponding angle of 30 degrees, 60 degrees and … … degrees of the forward return is obtained;
and seventhly, compensating the angle error of the numerical control machine tool, 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 rotary shaft provided by the embodiment 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 precise instrument and improve the detection precision.
The detecting instrument 200 can be used for detecting the positioning accuracy of the swinging shaft with the vertical included angle of 30 degrees, 45 degrees, 60 degrees and the like by matching with the detecting device 100.
The detection device 100 can directly detect the positioning precision of the rotation center line in the horizontal plane and the like by removing part of the components, and has good universality.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The method for detecting the positioning precision of the swing type rotary shaft is characterized by comprising the following steps of:
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 machine tool spindle, 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 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) are adjusted, so that the detection instrument (200) is coaxial with a machine tool rotating shaft; the Z-axis adjusting assembly comprises the angle wedge block and the connecting shaft (110), wherein 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; the X-axis adjusting assembly is connected with the Y-axis adjusting assembly and is used for moving and fixing the X-axis adjusting assembly along the X direction in a second plane parallel to the connecting surface relative to the Y-axis adjusting assembly; the angle deviation adjusting component is connected with the X-axis adjusting component and is used for swinging and fixing relative to the center of the X-axis adjusting component; one side of the angle deviation adjusting component, which is far away from the X-axis adjusting component, is used for installing the detecting instrument (200);
the precision of the machine tool rotating shaft is measured by the detecting instrument (200).
2. The method for detecting the positioning accuracy of a swing type rotary shaft according to claim 1, wherein:
the step of enabling the detecting instrument (200) to be coaxial with a machine tool rotating shaft through adjusting a Z-axis adjusting assembly, a Y-axis adjusting assembly, an X-axis adjusting assembly and an angle deviation adjusting assembly of the detecting device (100) comprises the following steps:
the central line of the detection device (100) is overlapped with the central 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 and the first dial indicator are combined and operated, so that the angle deviation adjusting assembly is perpendicular to the center line of the machine tool rotating shaft;
the detection instrument (200) is coaxial with the machine tool rotating shaft by combined operation of the Y-axis adjusting assembly, the X-axis adjusting assembly, the angle deviation adjusting assembly and the second dial indicator.
3. The method for detecting the positioning accuracy of a swing 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 is abutted to one side of the angle deviation adjusting assembly, on which the detecting instrument (200) is mounted;
the step of enabling the angle deviation adjusting component to be perpendicular to the center line of the machine tool rotating shaft through combined operation of the angle deviation adjusting component and the first dial indicator comprises the following steps of;
the rotary shaft of the machine tool is rotated through a hand wheel, and first detection data of the first dial indicator are obtained;
and adjusting the angle deviation adjusting component 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 swing-type rotary shaft according to claim 3, wherein:
the second dial indicator is fixed on a machine tool, and the free end of the second dial indicator is abutted against the circumference part of the detecting instrument (200);
the step of making the detecting instrument (200) coaxial with the machine tool rotating shaft by combined operation of the Y-axis adjusting assembly, the X-axis adjusting assembly, the angle deviation adjusting assembly and the second dial indicator comprises the following steps:
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.
5. The method for detecting the positioning accuracy of a swing type rotating shaft according to claim 4, wherein:
the detecting instrument (200) comprises a laser wireless turntable, and the circumference of the detecting instrument (200) comprises a chassis outer circle of the laser wireless turntable.
6. The method for detecting the positioning accuracy of a swing type rotating shaft according to claim 4, wherein:
the detection instrument (200) comprises a dodecagon, and the circumferential portion of the detection instrument (200) comprises an inner wall of a central hole of the dodecagon.
7. The method for detecting the positioning accuracy of a swing-type rotary shaft according to any one of claims 1 to 5, characterized by:
the detecting instrument (200) comprises a laser wireless turntable, and the laser wireless turntable is fixed on the angle deviation adjusting component;
the step of measuring the precision of the machine tool rotating shaft by the detecting instrument (200) comprises the following steps:
and obtaining third detection data according to the laser wireless turntable, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the third detection data meets third preset data.
8. The method for detecting the positioning accuracy of a swing type rotary shaft according to any one of claims 1 to 4, characterized by:
the detecting instrument (200) comprises a dodecagon body and an auto-collimator, wherein the dodecagon body is fixed on the angle deviation adjusting component;
the step of measuring the precision of the machine tool rotating shaft by the detecting instrument (200) comprises the following steps:
and obtaining fourth detection data according to the fact that any surface of the dodecagon body is right opposite to the optical axis of the auto-collimator, and repeatedly adjusting the Y-axis adjusting assembly, the X-axis adjusting assembly and the angle deviation adjusting assembly until the fourth detection data meets fourth preset data.
9. The method for detecting the positioning accuracy of a swing-type rotary shaft according to claim 3, wherein:
the angle deviation adjusting assembly comprises an angle deviation adjusting plate which is connected with the X-axis adjusting assembly in a swinging way;
the step of enabling the angle deviation adjusting component to be perpendicular to the center line of the machine tool rotating shaft through combined operation of the angle deviation adjusting component and the first dial indicator comprises the following steps of;
and the deflection angle adjusting plate is perpendicular to the central line of the machine tool rotating shaft through combined operation of the angle deviation adjusting assembly and the first dial indicator.
10. The method for detecting the positioning accuracy of a swing type rotary shaft according to claim 9, wherein:
the free end of the first dial indicator is abutted to the deflection angle adjusting plate.
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| AT215686B (en) * | 1959-02-21 | 1961-06-12 | Karl Miller | Device for measuring and adjusting the angular position of a machine tool head |
| US5219379A (en) * | 1990-09-26 | 1993-06-15 | Good John M | Angular alignment assembly |
| DE19648864C2 (en) * | 1996-11-12 | 2000-09-07 | Helmut Piko | Positioning procedure and positioning system |
| JP2005009962A (en) * | 2003-06-18 | 2005-01-13 | Mori Seiki Co Ltd | Rotation angle position measuring apparatus |
| JP2007168018A (en) * | 2005-12-21 | 2007-07-05 | Toyota Motor Corp | Movable type workpiece supporting device, machine tool and position adjustment method for workpiece |
| JP2008155327A (en) * | 2006-12-25 | 2008-07-10 | Daishowa Seiki Co Ltd | Angle measuring tool and angle measuring method |
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