CN114749995A - Swing type rotating shaft positioning precision detection method - Google Patents

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

Oscillating Rotary Shaft Positioning Accuracy Detection Method

technical field

The invention relates to the field of precision detection of a rotary axis of a machine tool, in particular to a method for detecting the positioning precision of a swing type rotary axis.

Background technique

At present, the commonly used precision instruments for detecting the rotation centerline of CNC machine tools are laser wireless turntables or polyhedral prisms combined with autocollimators. Due to the angle problem of the rotary axis, it is difficult for these two instruments to be directly installed on the machine tool for direct detection, and the installation error is large, which affects the detection accuracy.

SUMMARY OF THE INVENTION

The objects of the present invention include, for example, to provide a method for detecting the positioning accuracy of a swing-type rotary axis, which can improve the accuracy of detecting the accuracy of the rotary axis of a machine tool.

Embodiments of the present invention can be implemented as follows:

An embodiment of the present invention provides a method for detecting the positioning accuracy of a swinging rotary shaft, comprising the following steps:

The detection instrument is connected to the main shaft of the machine tool through the connection shaft of the detection device; wherein, one end of the connection shaft is coaxially connected to the main shaft of the machine tool, and the other end of the connection shaft is threadedly connected to the connection hole provided by the angle wedge block, The connection holes are arranged along the Z direction;

By adjusting the Z-axis adjustment assembly, the Y-axis adjustment assembly, the X-axis adjustment assembly and the angle deviation adjustment assembly of the detection device, the inspection instrument is made coaxial with the rotary axis of the machine tool; wherein the Z-axis adjustment assembly includes The angle wedge block and the connecting shaft, the angle wedge block is provided with a connecting surface, and the connecting surface is set at a preset angle with the Z direction; the Y-axis adjustment component is connected with the connecting surface, so The Y-axis adjustment assembly is used to move and fix relative to the angle wedge block along the Y direction in a first plane parallel to the connecting surface; the X-axis adjustment assembly is connected to the Y-axis adjustment assembly, and the X-axis adjustment assembly is connected to the Y-axis adjustment assembly. The axis adjusting assembly is used to move and fix relative to the Y-axis adjusting assembly along the X direction in a second plane parallel to the connecting surface; the angular deviation adjusting assembly is connected with the X-axis adjusting assembly, and the angular deviation The adjusting assembly is used for swinging and fixing relative to the center of the X-axis adjusting assembly; the side of the angular deviation adjusting assembly away from the X-axis adjusting assembly is used for installing the testing instrument;

The precision of the rotary axis of the machine tool is measured by the detection instrument.

In addition, the method for detecting the positioning accuracy of the swinging rotary shaft provided by the embodiment of the present invention may also have the following additional technical features:

Optionally, the step of making the detection instrument coaxial with the machine tool rotation axis by adjusting the Z-axis adjustment assembly, the Y-axis adjustment assembly, the X-axis adjustment assembly and the angle deviation adjustment assembly of the detection device includes:

By operating the Z-axis adjustment assembly, the Y-axis adjustment assembly, and the X-axis adjustment assembly, the center line of the detection device is made to coincide with the center line of the machine tool rotary axis;

By operating the angular deviation adjusting assembly and the first dial indicator in combination, the angular deviation adjusting assembly is made perpendicular to the center line of the rotary axis of the machine tool;

By operating the Y-axis adjustment assembly, the X-axis adjustment assembly, the angle deviation adjustment assembly and the second dial indicator in combination, the detection instrument is made coaxial with the machine tool rotation axis.

Optionally, the first dial indicator is fixed on the machine tool, and the free end of the first dial indicator abuts on the side where the angular deviation adjustment assembly is installed with the detection instrument;

The step of making the angle deviation adjustment assembly perpendicular to the center line of the machine tool rotary axis by operating the angle deviation adjustment assembly and the first dial indicator in combination includes;

Rotate the rotary axis of the machine tool through the handwheel to obtain the first detection data of the first dial indicator;

The angle deviation adjustment component is adjusted according to the first detection data until the first detection data reaches the first preset data.

Optionally, the second dial indicator is fixed on the machine tool, and the free end of the second dial indicator abuts on the circumference of the detection instrument;

The step of making the detection instrument coaxial with the rotation axis of the machine tool by operating the Y-axis adjustment assembly, the X-axis adjustment assembly, the angle deviation adjustment assembly and the second dial indicator in combination includes:

Rotate the rotary axis of the machine tool through the handwheel to obtain the second detection data of the second dial indicator;

The Y-axis adjustment component, the X-axis adjustment component, and the angular deviation adjustment component are adjusted according to the second detection data until the second detection data reaches second preset data.

Optionally, the detection instrument includes a laser wireless turntable, and the circumferential portion of the detection instrument includes an outer circumference of the chassis of the laser wireless turntable.

Optionally, the detection instrument includes a dodecagon, and the circumferential portion of the detection instrument includes an inner wall of a central hole of the dodecagon.

Optionally, the detection instrument includes a laser wireless turntable, and the laser wireless turntable is fixed to the angle deviation adjustment assembly;

The step of measuring the accuracy of the machine tool rotary axis by the detection instrument includes:

According to the third detection data obtained from the laser wireless turntable, the Y-axis adjustment component, the X-axis adjustment component and the angular deviation adjustment component are repeatedly adjusted until the third detection data satisfies the third preset data .

Optionally, the detection instrument includes a dodecagon and an autocollimator, and the dodecagon is fixed to the angle deviation adjustment assembly;

The step of measuring the accuracy of the machine tool rotary axis by the detection instrument includes:

Obtain fourth detection data according to any side of the dodecagon facing the optical axis of the autocollimator, and repeat the adjustment of the Y-axis adjustment component, the X-axis adjustment component, and the angular deviation adjustment component , until the fourth detection data satisfies the fourth preset data.

Optionally, the angle deviation adjustment assembly includes a declination adjustment plate swingably connected to the X-axis adjustment assembly;

The step of making the angle deviation adjustment assembly perpendicular to the center line of the machine tool rotary axis by operating the angle deviation adjustment assembly and the first dial indicator in combination includes;

By operating the angular deviation adjustment assembly and the first dial indicator in combination, the declination adjustment plate is made perpendicular to the center line of the machine tool rotary axis.

Optionally, the free end of the first dial indicator is in contact with the declination adjustment plate.

The beneficial effects of the method for detecting the positioning accuracy of the swinging rotary axis according to the embodiment of the present invention include, for example:

A method for detecting the positioning accuracy of an oscillating rotary axis includes the following steps: connecting a detecting instrument to a machine tool spindle through a connecting shaft of a detecting device; The adjustment component is adjusted so that the detection instrument is coaxial with the rotary axis of the machine tool; the precision of the rotary axis of the machine tool is measured by the detection instrument.

The detection instrument is installed on the main shaft of the machine tool through the detection device. By adjusting the Z-axis adjustment component, Y-axis adjustment component, X-axis adjustment component and angle deviation adjustment component of the detection device, the detection device is coaxial with the rotary axis of the machine tool. Synchronization is coaxial with the rotary axis of the machine tool, the detection instrument can detect the accuracy of the rotary axis of the machine tool, reduce the angle deviation error caused by the installation of the detection instrument, and improve the accuracy of the precision detection of the rotary axis of the machine tool.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of detection and installation of a detection device provided by an embodiment of the present invention;

FIG. 2 is a block diagram of steps of a method for detecting the positioning accuracy of an oscillating rotary shaft provided by an embodiment of the present invention.

Icon: 100-testing device; 110-connecting shaft; 200-testing instrument.

Detailed ways

In order to make the purposes, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, or It is the orientation or positional relationship that the product of the invention is usually placed in use, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation , so it should not be construed as a limitation of the present invention.

In addition, where the terms "first", "second" and the like appear, they are only used to differentiate the description, and should not be construed as indicating or implying relative importance.

It should be noted that the features in 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 rotary shaft provided in this embodiment will be described in detail below with reference to FIG. 1 to FIG. 2 .

Referring to FIG. 1 , an embodiment of the present invention provides a method for detecting the positioning accuracy of a swinging rotary shaft, which includes the following steps:

In step S1 , the detection instrument 200 is connected to the machine tool spindle through the connection shaft 110 of the detection device 100 . One end of the connecting shaft 110 is coaxially connected to the machine tool spindle, and the other end of the connecting shaft 110 is threadedly connected to the connecting hole provided in the angle wedge block, and the connecting hole is arranged along the Z direction.

Wherein, 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 rotary axis of the machine tool" is the center line indicated by the letter B in Figure 1.

One end of the connecting shaft 110 is installed in the main shaft hole of the machine tool, and the other end is fixed in the connecting hole of the angle wedge block installed in the detection device 100 . Adjust the direction and distance of the connecting shaft 110 so that the entire set of detection device 100 faces the CNC machine tool table, and lock the connecting shaft 110 and the main shaft of the machine tool to ensure that the connecting shaft 110 and the detection device 100 are fastened. The connecting shaft 110 is threadedly connected 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, by adjusting the Z-axis adjustment assembly, the Y-axis adjustment assembly, the X-axis adjustment assembly and the angle deviation adjustment assembly of the detection device 100, so that the detection instrument 200 is coaxial with the rotation axis of the machine tool; wherein, the Z-axis adjustment assembly includes an angle The wedge-shaped block and the connecting shaft 110, the angle wedge-shaped block is provided with a connecting surface, and the connecting surface is set at a preset angle with the Z direction; the Y-axis adjustment component is connected with the connecting surface, and the Y-axis adjustment component is used for the relative angle wedge-shaped block in parallel to the connecting surface. The X-axis adjustment component is connected with the Y-axis adjustment component, and the X-axis adjustment component is used to move and fix in the X-direction relative to the Y-axis adjustment component in the second plane parallel to the connecting surface. The angle deviation adjustment assembly is connected with the X-axis adjustment assembly, and the angle deviation adjustment assembly is used for swinging and fixed relative to the center of the X-axis adjustment assembly;

Specifically, the Y-axis adjustment assembly includes a connection base plate, a transition plate and a Y-direction adjustment knob; the connection base plate is fixed on the connection 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 adjustment knob is used to The transition plate abuts to stop the movement of the transition plate in the Y direction.

The X-axis adjustment assembly includes a top plate and an X-direction adjustment knob; the top plate is slidably connected to the transition plate along the X-direction; the X-direction adjustment knob abuts the top plate to stop the movement of the top plate in the X-direction.

The angle deviation adjustment assembly includes a declination adjustment ball, a declination adjustment plate and a declination adjustment knob; the middle part of the declination adjustment plate is swingably connected to the middle part of the top plate through the declination adjustment ball; the declination adjustment knob is connected with the declination adjustment plate and For the top plate, the declination adjustment knob is used to fix the declination adjustment plate relative to the top plate; the side of the declination adjustment plate away from the top plate is used to install the detection instrument 200 .

The height is roughly adjusted by the direction adjustment of the connecting shaft 110 to ensure that the center line of the main shaft hole of the machine tool, the center line of the rotary axis of the machine tool and the center line of the detection device 100 intersect. Adjust the Y-axis adjustment assembly and the X-axis adjustment assembly to ensure that the center of the detection device 100 is coincident with the center line of the machine tool rotary axis, synchronize the detection instrument 200 and the machine tool rotary axis, and then lock and fix. Adjust the angle deviation adjustment assembly to ensure that the rotation center line of the testing instrument 200 coincides with the machine tool rotation center line, and then lock the angle deviation adjustment assembly. Complete the installation and debugging.

Among them, the "preset angle" is set according to the angle between the machine tool spindle and the machine tool rotary axis, which can be 30°, 45°, and 60°. It can be used to detect the positioning accuracy of the rotary axis at an angle of 30°, 45°, 60°, etc. with the vertical line.

In step S3, the precision of the machine tool's rotary axis is measured by the detection instrument 200.

The detection instrument 200 is installed on the main shaft of the machine tool through the detection device 100. By adjusting the Z-axis adjustment components, the Y-axis adjustment components, the X-axis adjustment components and the angle deviation adjustment components of the detection device 100, the detection device 100 and the rotation axis of the machine tool are aligned. The detection instrument 200 is synchronously coaxial with the rotary axis of the machine tool, and the detection instrument 200 can detect the accuracy of the rotary axis of the machine tool, thereby reducing the angle deviation error caused by the installation of the detection instrument 200, and improving the accuracy of the precision detection of the rotary axis of the machine tool.

In this embodiment, step S2 includes:

Step S21 , by operating the Z-axis adjustment assembly, the Y-axis adjustment assembly, and the X-axis adjustment assembly, the center line of the detection device 100 is made to coincide with the center line of the machine tool rotation axis.

The detection instrument 200 is fixed on the detection device 100, and rough adjustment is performed, and the Y-axis adjustment component, the X-axis adjustment component and the angle deviation adjustment component are adjusted so that the center line of the detection device 100 and the machine tool rotation center line are coaxial as far as possible, and form a vertical line. preset angle.

In step S22, the angle deviation adjustment assembly is made perpendicular to the center line of the machine tool's rotary axis by the combined operation of the angle deviation adjustment assembly and the first dial indicator.

In this embodiment, the first dial indicator is fixed on the machine tool, and the free end of the first dial indicator abuts on the side where the angle deviation adjustment component is installed with the detection instrument 200; step S22 includes;

Step S221, rotate the rotary axis of the machine tool through the handwheel to obtain the first detection data of the first dial indicator;

Step S222: Adjust the angle deviation adjustment component according to the first detection data until the first detection data reaches the first preset data. In "the first detection data reaches the first preset data", the "first preset data" is a measurement standard, that is, the next step can be performed under what conditions the data printed by the first dial indicator satisfies.

In this embodiment, the angle deviation adjustment assembly includes a declination adjustment plate that is swingably connected to the X-axis adjustment assembly; step S22 includes: by operating the angle deviation adjustment assembly and the first dial indicator in combination, the declination adjustment plate and the first dial indicator are combined. The center line of the rotary axis of the machine tool is vertical.

In this embodiment, the free end of the first dial indicator is in contact with the declination adjusting plate.

Specifically, the magnetic watch seat equipped with the first dial indicator is fixed on the machine tool, so that the free end of the first dial indicator head is pressed against the declination adjustment plate of the detection device 100, and the rotary shaft of the machine tool is rotated by the handwheel, Adjust the angle deviation adjustment component to reduce the pitch angle and roll angle errors, so that the declination adjustment plate of the detection device 100 is perpendicular to the rotation center line of the machine tool.

Step S23 , through the combined operation of the Y-axis adjustment component, the X-axis adjustment component, the angle deviation adjustment component and the second dial indicator, the detection instrument 200 is made coaxial with the machine tool rotation axis.

In this embodiment, the second dial indicator is fixed on the machine tool, and the free end of the second dial indicator abuts on the circumference of the detection instrument 200; step S23 includes:

Step S231, rotating the rotary axis of the machine tool through the handwheel to obtain the second detection data of the second dial indicator;

Step S232 , adjust the Y-axis adjustment component, the X-axis adjustment component, and the angle deviation adjustment component according to the second detection data, until the second detection data reaches the second preset data. In "the second detection data reaches the second preset data", the "second preset data" is a measurement standard, that is, the next step can be performed under what conditions the data printed by the second dial indicator satisfies.

In this embodiment, the detection instrument 200 includes a laser wireless turntable, and the circumference of the detection instrument 200 includes the outer circle of the chassis of the laser wireless turntable.

Fix the magnetic base with the second dial indicator on the machine tool, put the free end of the second dial indicator on the outer circle of the chassis of the laser wireless turntable, turn the rotary axis of the machine tool with the handwheel, and adjust the Y-axis adjustment. Components, X-axis adjustment components and angle deviation adjustment components, finely adjust the concentricity between the laser wireless turntable and the machine tool's rotation center line, so that the maximum error of concentricity is as small as possible.

In this embodiment, the detection instrument 200 includes a dodecagon, and the circumference of the detection instrument 200 includes the inner wall of the central hole of the dodecagon.

Fix the magnetic watch seat with the second dial indicator on the machine tool, place the second dial indicator on the inner wall of the center hole of the twelve prism on the top of the free end of the second dial indicator, turn the rotary axis of the machine tool with the handwheel, and adjust the Y-axis adjustment. Components, X-axis adjustment components and angle deviation adjustment components, finely adjust the concentricity between the twelve prism and the machine tool's rotation center line, so that the maximum error of concentricity is as small as possible.

In this embodiment, the detection instrument 200 includes a laser wireless turntable, and the laser wireless turntable is fixed on the angle deviation adjustment component; step S3 includes:

In step S31, the third detection data is obtained according to the laser wireless turntable, and the Y-axis adjustment component, the X-axis adjustment component and the angle deviation adjustment component are repeatedly adjusted until the third detection data satisfies the third preset data. In "the third detection data reaches the third preset data", the "third preset data" is a measurement standard, that is, the next step can be performed under what conditions the data output by the laser wireless turntable satisfies.

Turn on the laser wireless turntable and supporting equipment and software, write the machine tool testing program and set the laser turntable software according to the testing requirements, detect the positioning accuracy and repeatability of the rotary axis, compensate the angle error of the CNC machine tool, and run 5 cycles continuously to detect and evaluate the machine tool error.

In this embodiment, the detection instrument 200 includes a dodecagon and an autocollimator, and the dodecagon is fixed on the angle deviation adjustment component; step S3 includes:

Step S32, obtain the fourth detection data according to the optical axis of the autocollimator on any side of the dodecagon, repeat the adjustment of the Y-axis adjustment component, the X-axis adjustment component and the angle deviation adjustment component, until the fourth detection data satisfies Fourth preset data. In "the fourth detection data reaches the fourth preset data", the "fourth preset data" is a measurement standard, that is, the next step can be performed under what conditions the data output by the autocollimator satisfies.

Stop the machine tool at the 0° position, find a suitable position to place the autocollimator, select any surface of the twelve prism to face the optical axis of the autocollimator, observe the field of view of the autocollimator, and find a clear "cross". image, adjust the autocollimator to make the "cross" image, so that it is located in the center of the double line of the field of view, open the autocollimator software, and set the reading to zero.

According to a method for detecting the positioning accuracy of a swinging rotary shaft provided in this embodiment, the method for detecting the positioning accuracy of a swinging rotary shaft at least includes the following embodiments:

Taking the swing axis whose center line of the rotary axis and the vertical line form an angle of 45°, the SHK interface of the machine tool spindle, and the detection instrument 200 being a laser wireless turntable as an example, the use of the method and the device is described.

The first step is to install one end of the connecting shaft 110 in the main shaft hole of the machine tool, and the other end to be fixed on the detection device 100, adjust the direction and distance of the connecting shaft 110, make the whole set of the detection device 100 face the CNC machine tool table, and lock the connection. The shaft 110 and the main shaft of the machine tool ensure that the connecting shaft 110 and the detection device 100 are fastened;

In the second step, the laser wireless turntable is fixed on the detection device 100, and the coaxiality is roughly adjusted, and the Y-axis adjustment component, the X-axis adjustment component and the angle deviation adjustment component are adjusted to make the center line of the detection device 100 and the machine tool rotation center as far as possible. The line is coaxial and forms an angle of 45° with the vertical line;

The third step is to fix the magnetic base equipped with the first dial indicator on the machine tool, so that the free end of the first dial indicator head rests on the declination adjustment plate of the detection device 100, and the rotary shaft of the machine tool is rotated by the handwheel. , adjust the angle deviation adjustment component to reduce the pitch angle and roll angle errors, so that the declination adjustment plate of the detection device 100 is perpendicular to the rotation center line of the machine tool;

The fourth step is to fix the magnetic base with the second dial indicator on the machine tool, put the free end of the second dial indicator head on the outer circle of the chassis of the laser wireless turntable, and turn the rotary axis of the machine tool with the handwheel. Adjust the Y-axis adjustment component, X-axis adjustment component and angle deviation adjustment component, and fine-tune the concentricity between the wireless turntable and the machine tool rotation center line, so that the maximum error of concentricity is as small as possible;

The fifth step, turn on the laser wireless turntable and supporting equipment and software, write the machine tool testing program and set the laser turntable software according to the testing requirements, test the positioning accuracy and repetitive positioning accuracy of the rotary axis, compensate for the angle error of the CNC machine tool, and run 5 cycles continuously to detect Evaluate machine tool errors.

If the dodecahedron is used as the detection instrument 200, the detection directly proceeds to the second step, and the method is as follows:

The first step is to install one end of the connecting shaft 110 in the main shaft hole of the machine tool, and the other end to be fixed on the detection device 100, adjust the direction and distance of the connecting shaft 110, make the whole set of the detection device 100 face the CNC machine tool table, and lock the connection. The shaft 110 and the main shaft of the machine tool ensure that the connecting shaft 110 and the detection device 100 are fastened;

The second step is to fix the dodecagon on the detection device 100, adjust the coaxiality roughly, adjust the Y-axis adjustment component, the X-axis adjustment component and the angle deviation adjustment component, and make the center line of the detection device 100 and the machine tool rotate as much as possible The center line is coaxial and forms an angle of 45° with the vertical line;

The third step is to fix the magnetic base equipped with the first dial indicator on the machine tool, so that the free end of the first dial indicator head rests on the declination adjustment plate of the detection device 100, and the rotary shaft of the machine tool is rotated by the handwheel. , adjust the angle deviation adjustment component to reduce the pitch angle and roll angle errors, so that the declination adjustment plate of the detection device 100 is perpendicular to the rotation center line of the machine tool;

The fourth step is to fix the magnetic base equipped with the second dial indicator on the machine tool, put the free end of the second dial indicator head on the inner wall of the center hole of the dodecagon, and turn the rotary axis of the machine tool with the handwheel. , Adjust the Y-axis adjustment component, X-axis adjustment component and angle deviation adjustment component, and fine-tune the concentricity between the prism and the center line of the machine tool rotation, so that the maximum error of concentricity is as small as possible;

The fifth step is to stop the machine tool at the 0° position, find a suitable position to place the autocollimator, select any face of the prism to face the optical axis of the autocollimator, observe the field of view of the autocollimator, and find a clear "ten" ” character image, adjust the autocollimator to make the “cross” image, so that it is located in the center of the double line of the field of view, open the autocollimator software, and set the reading to zero;

The sixth step, the machine tool stops once every 30° running, reads the error value of the corresponding angle from the autocollimator software, and then rotates for one cycle in each operation. … the error value of the corresponding angle of 360°;

The seventh step is to compensate the angle error of the CNC machine tool, and continuously run for 3-5 cycles to detect and evaluate the machine tool error.

The method for detecting the positioning accuracy of an oscillating rotary shaft provided by this embodiment has at least the following advantages:

The detection instrument 200 can be directly installed on the numerical control machine tool for detection through the detection device 100, and the angle deviation error caused by the installation of the precision instrument can also be reduced, and the detection accuracy can be improved.

The detection instrument 200 can be used in conjunction with the detection device 100 to detect the positioning accuracy of the swing axis when the vertical line angle is 30°, 45°, 60°, etc.

The detection device 100 removes some components, and can directly detect the positioning accuracy of the center line of rotation in the horizontal plane, and has good versatility.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed by the present invention can easily think of changes or substitutions. All should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. a swing type rotary shaft positioning accuracy detection method, is characterized in that, comprises the following steps: The detection instrument (200) is connected to the machine tool main shaft through the connection shaft (110) of the detection device (100); wherein, one end of the connection shaft (110) is coaxially connected to the machine tool main shaft, and the connection shaft (110) The other end of ) is screwed with the connection hole provided by the angle wedge block, and the connection hole is arranged along the Z direction; By adjusting the Z-axis adjustment components, the Y-axis adjustment components, the X-axis adjustment components and the angle deviation adjustment components of the detection device (100), the detection instrument (200) is made coaxial with the rotation axis of the machine tool; The Z-axis adjustment assembly includes the angle wedge-shaped block and the connecting shaft (110), the angle wedge-shaped block is provided with a connecting surface, and the connecting surface and the Z direction are set at a preset angle; the Y-axis adjustment The assembly is connected with the connecting surface, and the Y-axis adjusting assembly is used for moving and fixing relative to 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 The Y-axis adjustment assembly is connected, and the X-axis adjustment assembly is used to move and fix relative to the Y-axis adjustment assembly in the X direction in a second plane parallel to the connecting surface; the angle deviation adjustment assembly is connected to the X-axis adjustment assembly. The axis adjustment assembly is connected, and the angle deviation adjustment assembly is used for swinging and fixing relative to the center of the X-axis adjustment assembly; the side of the angle deviation adjustment assembly away from the X-axis adjustment assembly is used for installing the detection instrument ( 200); The precision of the rotary axis of the machine tool is measured by the detection instrument (200). 2. swing type rotary shaft positioning accuracy detection method according to claim 1 is characterized in that: The step of making the detection instrument (200) coaxial with the rotary axis of the machine tool by adjusting the Z-axis adjustment component, the Y-axis adjustment component, the X-axis adjustment component and the angle deviation adjustment component of the detection device (100). include: By operating the Z-axis adjustment assembly, the Y-axis adjustment assembly, and the X-axis adjustment assembly, the center line of the detection device (100) coincides with the center line of the machine tool rotation axis; By operating the angular deviation adjusting assembly and the first dial indicator in combination, the angular deviation adjusting assembly is made perpendicular to the center line of the rotary axis of the machine tool; By operating the Y-axis adjustment assembly, the X-axis adjustment assembly, the angle deviation adjustment assembly and the second dial indicator in combination, the detection instrument (200) is made coaxial with the machine tool rotation axis. 3. swing type rotary shaft positioning accuracy detection method according to claim 2 is characterized in that: The first dial indicator is fixed on the machine tool, and the free end of the first dial indicator abuts on the side where the angular deviation adjustment component is installed with the detection instrument (200); The step of making the angle deviation adjustment assembly perpendicular to the center line of the machine tool rotary axis by operating the angle deviation adjustment assembly and the first dial indicator in combination includes; Rotate the rotary axis of the machine tool through the handwheel to obtain the first detection data of the first dial indicator; The angle deviation adjustment component is adjusted according to the first detection data until the first detection data reaches the first preset data. 4. swing type rotary shaft positioning accuracy detection method according to claim 3 is characterized in that: The second dial indicator is fixed on the machine tool, and the free end of the second dial indicator abuts on the circumference of the detection instrument (200); The detection instrument (200) is made coaxial with the machine tool rotation axis by operating the Y-axis adjustment assembly, the X-axis adjustment assembly, the angle deviation adjustment assembly and the second dial indicator in combination. Steps include: Rotate the rotary axis of the machine tool through the handwheel to obtain the second detection data of the second dial indicator; The Y-axis adjustment component, the X-axis adjustment component, and the angular deviation adjustment component are adjusted according to the second detection data until the second detection data reaches second preset data. 5. The method for detecting the positioning accuracy of the swing type rotary shaft according to claim 4, wherein: The detection instrument (200) includes a laser wireless turntable, and the circumferential portion of the detection instrument (200) includes the outer circumference of the chassis of the laser wireless turntable. 6. The method for detecting the positioning accuracy of the swing type rotary shaft according to claim 4, wherein: The detection instrument (200) includes a dodecagon, and the circumferential portion of the detection instrument (200) includes an inner wall of a central hole of the dodecagon. 7. The method for detecting the positioning accuracy of a swinging rotary shaft according to any one of claims 1-6, wherein: The detection instrument (200) includes a laser wireless turntable, and the laser wireless turntable is fixed to the angle deviation adjustment component; The step of measuring the accuracy of the machine tool rotary axis by the detection instrument (200) includes: According to the third detection data obtained from the laser wireless turntable, the Y-axis adjustment component, the X-axis adjustment component and the angular deviation adjustment component are repeatedly adjusted until the third detection data satisfies the third preset data . 8. The method for detecting the positioning accuracy of a swinging rotary shaft according to any one of claims 1-6, wherein: The detection instrument (200) includes a dodecagon and an autocollimator, and the dodecagon is fixed to the angle deviation adjustment component; The step of measuring the accuracy of the machine tool rotary axis by the detection instrument (200) includes: Obtain fourth detection data according to any side of the dodecagon facing the optical axis of the autocollimator, and repeat the adjustment of the Y-axis adjustment component, the X-axis adjustment component, and the angular deviation adjustment component , until the fourth detection data satisfies the fourth preset data. 9. The method for detecting the positioning accuracy of an oscillating rotary shaft according to claim 3, wherein: The angle deviation adjustment assembly includes a declination adjustment plate swingably connected to the X-axis adjustment assembly; The step of making the angle deviation adjustment assembly perpendicular to the center line of the machine tool rotary axis by operating the angle deviation adjustment assembly and the first dial indicator in combination includes; By operating the angular deviation adjustment assembly and the first dial indicator in combination, the declination adjustment plate is made perpendicular to the center line of the machine tool rotary axis. 10. The method for detecting the positioning accuracy of an oscillating rotary shaft according to claim 9, wherein: The free end of the first dial indicator is in contact with the declination adjustment plate.

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