CN109531274B - Z-direction reference plane detection and setting method of vertical milling machine - Google Patents

Z-direction reference plane detection and setting method of vertical milling machine Download PDF

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CN109531274B
CN109531274B CN201811278317.6A CN201811278317A CN109531274B CN 109531274 B CN109531274 B CN 109531274B CN 201811278317 A CN201811278317 A CN 201811278317A CN 109531274 B CN109531274 B CN 109531274B
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probe
plane
reference plane
setting
tool
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CN109531274A (en
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黄方林
杨京京
高锦焜
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Chengdu Aircraft Industrial Group Co Ltd
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Chengdu Aircraft Industrial Group Co Ltd
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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
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • 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

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Abstract

The invention discloses a method for detecting and setting a Z-direction reference plane of a vertical milling machine, which is characterized in that a probe is used for aligning a reference machining plane and calibrating the reference machining plane, a positioning surface profile is determined on a tool according to the size and the position of a part blank before measurement, a plurality of sampling points are selected as sampling positions according to the position of the positioning surface of the part, and the average value of Z values of the sampling points is taken as the position of the Z-direction reference plane within a tolerance range.

Description

Z-direction reference plane detection and setting method of vertical milling machine
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a method for detecting and setting a Z-direction reference plane of a vertical milling machine.
Background
Machining techniques generally follow a "positioning-machining" mode of operation, according to which the design and the process are followed
The accurate positioning of the machined workpiece is required to be realized, the establishment of a corresponding machining coordinate system becomes the most important work content in the machining process, and the alignment and setting of the Z-direction reference plane are the primary steps in the establishment of the machining coordinate system. At present stage, for
For a vertical machine tool, a manual alignment mode is the most common mode, and during alignment, an operator manually finds out a position of a Z0 surface reference by using a standard feeler block on the machine tool, and then inputs related data into a numerical control system through a machine tool calculation function or manually, and sets a workpiece coordinate system.
In batch processing, the checking and setting process is repeated continuously, and an operator often performs checking and setting on the Z-direction initial plane in a random spot check mode, so that the result that the workpiece is not clamped by mistake and is not found can be brought, and the workpiece is scrapped due to out-of-tolerance.
Most parts manufactured in a numerical control machining mode are complex in shape, high in technological requirement and expensive in material, and due to the fact that due to misoperation, the out-of-tolerance scrapping of the parts brings great loss to enterprises. Therefore, the accuracy of the inspection and setting of the Z-direction initial plane in the machining is particularly important.
Disclosure of Invention
The invention aims to provide a method for aligning a Z-direction reference plane by a probe suitable for a vertical milling machine, which solves the problems of low speed and poor reliability of manually setting a Z-direction initial origin of a machining coordinate system in a numerical control machining process.
The invention is realized by the following technical scheme:
a Z-direction reference plane detection and setting method of a vertical milling machine comprises the steps of using a probe to align a reference machining plane and calibrate the reference machining plane, determining a positioning surface profile on a tool according to the size and the position of a part blank before measurement, taking the positioning surface profile as a boundary, selecting a plurality of sampling points as sampling positions according to the position of the part positioning surface, and taking the average value of Z values of the sampling points as the position of the Z-direction reference plane within a range meeting tolerance.
Further, in order to better implement the invention, the method specifically comprises the following steps:
and B: calibrating a probe;
and C: determining a detection area outline of a positioning plane according to the placement position of a part cat, and performing probe measurement and Z-direction origin point calculation on a Z-direction origin point plane at a plurality of sampling points P1-Pn in the area outline range and on a reference plane;
step D: measuring by a probe of a Z-direction reference surface;
further, in order to better implement the present invention, the method further comprises the following steps: a tool cleaning method; the method specifically comprises the following steps: determining the profile of a cleaning area, cleaning the profile range of the cleaning area by using a fan, connecting the cleaning area with a machine tool spindle through a tool handle, rotating the spindle and the band-pass fan blades to form cleaning capacity during cleaning, and moving the spindle according to a set cleaning track to cover all surfaces of the tool to finish cleaning.
Further, in order to better implement the present invention, the step B specifically includes the following steps:
step B1: a probe length calibration method; the method specifically comprises the following steps:
step B111: acquiring the position of a tool setting plane Z in a machine tool coordinate system, and setting the tool setting plane to be Z equal to 0;
step B112: the probe is arranged in the spindle, the probe is started, the probe is moved to the position above the feeler block, the probe moves along the direction of approaching the workbench along the Z axis, the probe contacts the feeler surface, the loss Ls of the cutter is automatically obtained, and the actual length Lt of the probe is calculated according to the loss Ls; lt0+ Ls, where Lt0 is the initial length of the probe;
step B2: calibrating the diameter of the probe; the method specifically comprises the following steps: the ring gauge is placed at the same position of the cutter block when the length is calibrated, the probe is moved to the position close to the circle center inside the ring gauge, the probe can be ensured to touch the ring gauge when moving in the X direction and the Y direction, the height position is located at half of the thickness of the ring, the probe is opened, the radius is corrected, and the radius value of the probe in the X, Y direction is obtained.
Further, in order to better implement the invention, the ring gauge is a ring gauge with a standard circle.
Further, in order to better implement the present invention, the step C specifically includes the following steps:
step C1: measuring by a Z-direction origin plane probe;
step C2: and calculating the Z-direction origin.
Further, in order to better implement the present invention, the step C1 specifically refers to: determining the outline of a detection area of a positioning plane according to the placement position of a blank, setting a plurality of sampling points P1-Pn within the outline range of the detection area, taking Z-direction coordinate values of the plurality of sampling points P1-Pn as the Z-direction origin of the machine tool, and distributing the plurality of sampling points P1-Pn within the range of a part positioning surface;
further, in order to better implement the present invention, the step C2 specifically refers to: after the measurement is finished, respectively calculating the difference value of the Z-direction coordinates of the sampling points;
if the maximum difference value exceeds the tolerance limit range, the measurement reference surface is invalid and cannot be used as a Z-direction origin;
and if the maximum difference value is within the tolerance limit range and the measurement reference surface is effective, taking the average value of the Z values of the sampling points as the Z-direction origin.
Further, in order to better implement the present invention, the step D comprises the following steps:
step D1: a Z-direction reference surface measuring method;
direct contact to Z-reference plane using calibrated probeAcquiring the position of a Z-direction plane in a machine tool coordinate system; during measurement, the probe is started, the measuring head is moved to the position above the measuring surface and moves along the Z-axis direction to be close to the Z-direction reference plane direction, the Z-direction reference plane position Z0 is obtained through contact, and the values Z of all sampling points P1-Pn are obtainedP1......ZPnClosing the probe and finishing the measurement;
step D2: calculating a mean value Zavg ═ of the Z direction of the sampling points (Zp1+.... + Zpn)/n; the position of an initial Z-direction reference plane of a part machining coordinate system in a machine tool is Z ═ Zavg;
further, in order to better implement the invention, when measuring the coordinates of the sampling point, the detection track comprises a fast movement section S1, an approach section S2 and a transfer section S3, the probe of the fast movement section S1 moves fast from the safety plane to the approach section S2, the probe of the approach section S2 moves gradually to contact the reference detection plane, and the transfer section S3 is the position of the measurement point to be replaced, and the probe moves fast.
The working principle is as follows:
compared with the prior art, the invention has the following advantages and beneficial effects:
(1) according to the invention, the processing reference plane is automatically aligned by the probe, so that the reference error in a manual alignment mode is effectively reduced, the alignment efficiency is greatly improved, and the stability of the alignment process is ensured;
(2) when the probe is used for aligning the reference, the clamping plane is automatically cleaned by using the fan, so that the device is particularly suitable for cleaning a horizontal machine tool workbench, and can effectively inhibit the reference alignment error caused by the existence of foreign matters such as cutting and the like;
(3) in the process of detecting the probe, the on-off state of the probe is controlled according to actual detection requirements, so that the influence of the long-term on-state of the probe on the service life is avoided;
(4) when the probe is used for aligning the reference plane, only the flatness condition near the part positioning surface is checked, so that the influence of invalid area errors on the use of the tool is avoided;
(5) when the probe is used for aligning the reference plane, the detection is carried out by using multiple detection points, the influence of the sampling point position on the alignment of the reference plane is effectively avoided by error discrimination and average value solving, and the alignment precision is improved.
Drawings
FIG. 1 is a schematic view of the positioning of an adjusting part according to the present invention;
FIG. 2 is a schematic view of the cleaning area of the present invention;
FIG. 3 is a schematic view of a fan according to the present invention;
FIG. 4 is a schematic view of the probe of the present invention;
FIG. 5 is a schematic diagram of a flatness inspection sampling point according to the present invention;
FIG. 6 is a schematic view of a probe for detecting flatness path according to the present invention;
the method comprises the following steps of 1-positioning a tool, 2-part blank, 3-processing of an origin of a coordinate system, 4-cleaning area wheel, 5-outline fan body, 6-fan blade, 7-probe clamping body, 8-probe, 9-detecting body and 10-detection of area outline.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, wherein the terms "mounted," "connected," "secured," and the like are used broadly and encompass, unless otherwise explicitly stated or limited, devices that can be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
the invention is realized by the following technical scheme, as shown in figures 1-6, the Z-direction reference plane detection and setting method of the vertical milling machine uses a probe to align a reference machining plane and calibrate, before measurement, a positioning surface profile is determined on a tool according to the size and the position of a part blank 2, the positioning surface profile is taken as a boundary, a plurality of sampling points are selected as sampling positions according to the position of the positioning surface of the part, and the average value of Z values of the sampling points is taken as the position of the Z-direction reference plane within a tolerance range.
Further, in order to better implement the invention, the method specifically comprises the following steps:
and B: calibrating a probe;
and C: determining a positioning plane detection area outline 10 according to the placement position of the part blank 2, and performing plane probe measurement and Z-direction origin point calculation on a plurality of sampling points P1-Pn in the detection area outline 10 range and on a reference plane;
step D: and measuring by a Z-direction reference surface probe.
Further, in order to better implement the present invention, the method further comprises the following steps: a tool cleaning method; the method specifically comprises the following steps: the special fan is used for cleaning, the cutter handle is connected with a main shaft of the machine tool, when the cleaning is carried out, the main shaft rotates, the band-pass fan blades rotate to form cleaning capacity, the main shaft moves according to a set cleaning track, all surfaces of the tool are covered, and cleaning is finished.
Further, in order to better implement the present invention, the step B specifically includes the following steps:
step B1: a probe length calibration method; the method specifically comprises the following steps:
step B111: acquiring the position of a tool setting plane Z in a machine tool coordinate system, and setting the tool setting plane to be Z equal to 0;
step B112: the probe is arranged in the spindle, the probe is started, the probe is moved to the position above the feeler block, the probe moves along the direction of approaching the workbench along the Z axis, the probe contacts the feeler surface, the loss Ls of the cutter is automatically obtained, and the actual length Lt of the probe is calculated according to the loss Ls; lt0+ Ls, where Lt0 is the initial length of the probe;
step B2: calibrating the diameter of the probe; the method specifically comprises the following steps: the ring gauge is placed at the same position of the cutter block when the length is calibrated, the probe is moved to the position close to the circle center inside the ring gauge, the probe can be ensured to touch the ring gauge when moving in the X direction and the Y direction, the height position is located at half of the thickness of the ring, the probe is opened, the radius is corrected, and the radius value of the probe in the X, Y direction is obtained.
Further, in order to better implement the invention, the ring gauge is a ring gauge with a standard circle.
Further, in order to better implement the present invention, the step C specifically includes the following steps:
step C1: measuring by a Z-direction origin plane probe;
step C2: and calculating the Z-direction origin.
Further, in order to better implement the present invention, the step C1 specifically refers to: setting Z-direction coordinate values of a plurality of sampling points P1-Pn on a reference plane as a Z-direction origin of the machine tool, wherein the plurality of sampling points P1-Pn are distributed in the range of a part positioning surface;
further, in order to better implement the present invention, the step C2 specifically refers to: after the measurement is finished, respectively calculating the difference value of the Z-direction coordinates of the sampling points;
if the maximum difference value exceeds the tolerance limit range, the measurement reference surface is invalid and cannot be used as a Z-direction origin;
and if the maximum difference value is within the tolerance limit range and the measurement reference surface is effective, taking the average value of the Z values of the sampling points as the Z-direction origin.
Further, in order to better implement the present invention, the step D comprises the following steps:
step D1: a Z-direction reference surface measuring method;
directly contacting the Z-direction reference plane by using the corrected probe to obtain the position of the Z-direction plane in a machine tool coordinate system; during measurement, the probe is started, the measuring head is moved to the position above the measuring surface and moves along the Z-axis direction to be close to the Z-direction reference plane direction, the Z-direction reference plane position Z0 is obtained through contact, and the values Z of all sampling points P1-Pn are obtainedP1......ZPnClosing the probe and finishing the measurement;
step D2: calculating a mean value Zavg ═ of the Z direction of the sampling points (Zp1+.... + Zpn)/n; the position of an initial Z-direction reference plane of a part machining coordinate system in a machine tool is Z ═ Zavg;
further, in order to better implement the invention, when measuring the coordinates of the sampling point, the detection track comprises a fast movement section S1, an approach section S2 and a transfer section S3, the probe of the fast movement section S1 moves fast from the safety plane to the approach section S2, the probe of the approach section S2 moves gradually to contact the reference detection plane, and the transfer section S3 is the position of the measurement point to be replaced, and the probe moves fast. .
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 2:
the embodiment is further optimized on the basis of the embodiment, and as shown in fig. 1 and fig. 2, the method for detecting and setting the Z-direction reference plane suitable for the vertical milling machine is characterized in that an automatic measuring method using a probe for detection and a standard measuring program of a nested numerical control system are adopted, the used probe has a position detection sensing function and can feed back a measuring result to a control system; the automatic measuring method consists of a tool cleaning method, a probe length calibrating method, a probe diameter calibrating method and a Z-direction plane probe measuring method;
the tool cleaning method is characterized in that a special fan is used for cleaning, the structure of the fan is similar to that of a cutter, the working part is a fan blade, the fan blade is connected with a main shaft of a machine tool through a cutter handle, the main shaft rotates during cleaning, the band-pass fan blade rotates to form cleaning capacity, the main shaft moves according to a set cleaning track to cover all surfaces of the tool, and cleaning is completed.
The probe length calibration method comprises the steps of using standard parts such as a core rod and a reference cutter with standard length values as calibration cutters, mounting the calibration cutters on a machine tool spindle during calibration, placing a standard length feeler block on a workbench, carrying out manual tool setting operation, obtaining the position of a tool setting plane Z in a machine tool coordinate system, and setting the tool setting plane to be Z-0; the method comprises the steps of taking a calibrated cutter down from a main shaft, installing a probe into the main shaft, enabling the initial length of the probe to be Lt0 as a cutter length compensation value, starting the probe, moving the probe above a feeler block, enabling the probe to move in the direction of approaching a workbench along the Z axis, enabling the probe to contact a cutter aligning surface, automatically obtaining the loss Ls of the cutter by using the function of a machine tool, and enabling the actual cutter length of the probe to be Lt0+ Ls.
The diameter calibration method of the probe uses a ring gauge with a standard circle, the diameter specification of the ring gauge is 30mm, 40mm, 50mm and the like, the thickness specification of a measurement ring is not smaller than the diameter of a measuring head, the ring gauge is placed at the same position of a feeler block when the length is calibrated, the probe is moved to the position close to the circle center inside the ring gauge, the probe is ensured to touch the ring gauge when moving along X, Y direction, the height position is located at half of the thickness of the ring, the probe is started, the radius is corrected, and the radius value of the probe in X, Y direction is obtained;
determining a contour 10 of a detection area of a positioning plane according to the placement position of a blank, setting a plurality of sampling points P1-Pn within the range of the contour 10 of the detection area, taking Z-direction coordinate values of the plurality of sampling points P1-Pn as a Z-direction origin of a machine tool, and distributing the plurality of sampling points P1-Pn within the range of a part positioning surface;
the Z-direction origin point plane probe measuring method is characterized in that Z-direction coordinate values of a plurality of sampling points on a reference plane are taken as the Z-direction origin points of the machine tool, and the sampling points are distributed in the range of a part positioning surface;
calculating the Z-direction origin, respectively calculating the difference value of the Z-direction coordinates of the sampling points after the measurement is finished, and if the maximum difference value exceeds the tolerance limit, the measurement reference surface is invalid and cannot be used as the Z-direction origin; and if the maximum difference value is within the tolerance limit range and the measurement reference surface is effective, taking the average value of the Z values of the sampling points as the Z-direction origin.
According to the Z-direction reference plane measuring method, when the coordinate of the sampling point is measured, the corrected probe is used for directly contacting the Z-direction reference plane to obtain the position of the Z-direction plane in a machine tool coordinate system, during measurement, the probe is started, the measuring head is moved to the position above the measuring plane and moves along the Z-direction axial direction to be close to the Z-direction reference plane, the Z-direction reference plane position Z0 is obtained through contact, the probe is closed, and measurement is finished.
According to the Z-direction reference surface measuring method, when the coordinates of the sampling point are measured, the detection track comprises a rapid movement section S1, an approaching section S2 and a transfer section S3, a measuring head in the rapid movement section S1 moves from a safety plane to the approaching section S2, a probe in the approaching section S2 gradually moves to contact with a reference detection plane, and the transfer section S3 is the position of the measurement point to be replaced, and the probe moves rapidly.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 3:
in the best embodiment of the method for detecting and setting the Z-direction reference plane of the vertical milling machine, as shown in fig. 1, a part to be machined is clamped and positioned by using the positioning tool 1, the part blank 2 is positioned by positioning the fabrication hole and the reference plane, the origin 3 of the machining coordinate system is positioned at the fabrication hole on the left side, and the Z-direction reference plane is the upper surface of the positioning tool 1.
The probe is used for aligning a reference machining plane, the upper surface of the positioning tool 1 needs to be cleaned, a cleaning area outline 4 is determined according to the size of the part blank 2, and the part blank 2 is taken down.
The used cleaning fan structure is shown in fig. 3, and the fan is composed of a fan body 5 and fan blades 6, the fan is connected with a main shaft of a machine tool, the main shaft rotates to drive the fan to rotate, the main shaft moves according to a given track, the cleaning of the outline 4 of a cleaning area is guaranteed to be completed, and the cleaning is completed.
As shown in fig. 4, the calibration probe has a probe structure including a probe holder 7, a probe 8, and a detector 9, and is a standard probe.
Carrying out manual tool setting operation by using a core rod with a standard length value of 50mm, and acquiring the position Z of a tool setting plane in a machine tool coordinate system as 49.99 mm; inputting the initial length of the probe 260mm as a tool length compensation value into a machine tool, starting the probe, moving the probe to the position above a feeler block, moving the probe to the direction close to a workbench along the Z axis to contact a tool-setting surface, using the function of the machine tool to obtain the loss of the tool, namely-0.13 mm, and obtaining the actual probe length of 259.87 mm.
The method comprises the steps of placing a standard ring gauge with the diameter of 50mm and the thickness of 10mm at the same position of a feeler block during length calibration, moving a probe to a position, close to the center of a circle, in the ring gauge, and located at the half position of the thickness of the ring, starting the probe, correcting the radius of the feeler by using a radius correction function, and obtaining the radius value of the probe in the direction of X, Y. And compensating the probe radius compensation value to the probe system.
According to the placing position of the part blank 2, determining a positioning plane detection area profile 10 and taking sampling points P1-P7 within the range of the detection area profile 10, wherein the sampling points are used for detecting the position of a Z-direction reference surface.
And performing point position detection according to the selected sampling point, wherein as shown in fig. 6, the probe detection track is schematically illustrated, and the detection track is divided into a fast movement section S1, an approach section S2 and a transfer section S3, wherein the fast movement section S1 and the transfer section S3 have higher movement speeds than the approach section S2. And starting the probe when the detection is started, and closing the probe in the rest time.
After the Z values of all sampling points are obtained, the difference between the maximum Z value and the minimum Z value is less than 0.05mm, the actual use requirement is met, and the Z-direction mean value Zavg of the sampling points is calculated (Zp1+.... + Zpn)/n; the position of an initial Z-direction reference plane of a part machining coordinate system in a machine tool is Z ═ Zavg;
other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (8)

1. The Z-direction reference plane detection and setting method of the vertical milling machine is characterized by comprising the following steps of: the method comprises the following steps of (1) aligning a reference machining plane and calibrating by using a probe, determining a positioning surface profile on a tool according to the size and the position of a part blank (2) before measurement, selecting a plurality of sampling points as sampling positions according to the position of the part positioning surface by taking the positioning surface profile as a boundary, and taking the average value of Z values of the sampling points as the position of a Z-direction reference plane within a range meeting tolerance; the method specifically comprises the following steps:
and B: calibrating a probe;
and C: determining a detection area profile (10) of a positioning plane according to the placement position of the part blank (2), and performing probe measurement and Z-direction origin point calculation on a Z-direction origin point plane at a plurality of sampling points P1-Pn within the range of the detection area profile (10) and on a reference plane;
step D: measuring by a probe of a Z-direction reference surface;
the step B specifically comprises the following steps:
step B1: a probe length calibration method; the method specifically comprises the following steps:
step B111: acquiring the position of a tool setting plane Z in a machine tool coordinate system, and setting the tool setting plane to be Z = 0;
step B112: the method comprises the steps of installing a probe into a main shaft, starting the probe, moving the probe to a position above a feeler block, moving the probe to a direction close to a workbench along a Z axis, enabling the probe to contact a feeler face, automatically obtaining a loss Ls of the cutter, and calculating the actual probe length Lt according to the loss, wherein Lt = Lt0+ Ls, and Lt0 is the initial length of the probe;
step B2: calibrating the diameter of the probe; the method specifically comprises the following steps: the ring gauge is placed at the same position of the cutter block when the length is calibrated, the probe is moved to the position close to the circle center inside the ring gauge, the probe can be ensured to touch the ring gauge when moving in the X direction and the Y direction, the height position is located at half of the thickness of the ring, the probe is opened, the radius is corrected, and the radius value of the probe in the X, Y direction is obtained.
2. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 1, wherein: further comprising the step of A: a tool cleaning method; the method specifically comprises the following steps: the cleaning tool is characterized in that a fan is used for cleaning, the tool handle is connected with a main shaft of the machine tool, the main shaft rotates during cleaning, the band-pass fan blades rotate to form cleaning capacity, and the main shaft moves according to a set cleaning track to cover all surfaces of the tool to complete cleaning.
3. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 1 or 2, wherein: the ring gauge is a ring gauge with a standard circle.
4. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 1 or 2, wherein: the step C specifically comprises the following steps:
step C1: measuring by a Z-direction origin plane probe;
step C2: and calculating the Z-direction origin.
5. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 4, wherein: the step C1 specifically refers to: determining the outline of a detection area of a positioning plane according to the placement position of a blank, setting a plurality of sampling points P1-Pn within the outline range of the detection area, taking Z-direction coordinate values of the plurality of sampling points P1-Pn as a Z-direction origin of a machine tool, and distributing the plurality of sampling points P1-Pn within the range of a part positioning plane.
6. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 5, wherein: the step C2 specifically refers to: after the measurement is finished, respectively calculating the difference value of the Z-direction coordinates of the sampling points;
if the maximum difference value exceeds the tolerance limit range, the measurement reference surface is invalid and cannot be used as a Z-direction origin;
and if the maximum difference value is within the tolerance limit range and the measurement reference surface is effective, taking the average value of the Z values of the sampling points as the Z-direction origin.
7. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 6, wherein: the step D comprises the following steps:
step D1: a Z-direction reference surface measuring method;
directly contacting the Z-direction reference plane by using the corrected probe to obtain the position of the Z-direction plane in a machine tool coordinate system; during measurement, the probe is started, the measuring head is moved to the position above the measuring surface and moves along the Z-axis direction to be close to the Z-direction reference plane direction, the Z-direction reference plane position Z0 is obtained through contact, and the values of all sampling points P1-Pn are obtained
Figure DEST_PATH_IMAGE001
Closing the probe and finishing the measurement;
step D2: calculating the mean value of the Z direction of the sampling point
Figure 643231DEST_PATH_IMAGE002
(ii) a The position of the initial Z-direction reference plane of the part machining coordinate system in the machine tool is Z = Zavg.
8. The method for detecting and setting the Z-direction reference plane of the vertical milling machine according to claim 7, wherein: when the coordinates of the sampling point are measured, the detection track comprises a rapid movement section S1, an approach section S2 and a transfer section S3, a measuring head of the rapid movement section S1 moves from the safety plane to the approach section S2, a probe of the approach section S2 gradually moves to contact with the reference detection plane, and the transfer section S3 is the position of a replacement measuring point and the probe moves rapidly.
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