A tool automatic measurement method

Abstract

This invention relates to the field of CNC machining technology, and more particularly to an automatic tool measurement method. The method includes determining the operating parameters of a tool pre-setting device and the nominal values ​​of the tool holder and the tool; assembling the tool and tool holder to form a tool system and mounting it on the spindle of the tool pre-setting device; inputting the operating parameters of the tool pre-setting device and the nominal values ​​of the tool holder and the tool into a host computer; using the host computer to determine the tool measurement method based on the corresponding operating parameters and nominal values; and controlling the tool pre-setting device to automatically measure the dimensions of the tool system according to the determined tool measurement method. This technical solution does not rely on the length of the tool system after the tool holder and tool assembly plus the length of the tool holder. It only needs to calculate the measurement points of the tool to be measured based on the nominal diameter and nominal R value of the tool, and accurately measure the length of the tool system, the tool diameter, and the actual value of the tool's bottom teeth, thereby improving measurement efficiency and accuracy and achieving true automated tool measurement.

Description

Technical Field

[0001] This invention relates to the field of CNC machining technology, and in particular to an automatic tool measurement method. Background Technology

[0002] A fully automatic tool pre-adjustment device is a CNC-controlled, motor-driven tool pre-adjustment and testing equipment with automatic X, Z, and C-axis positioning. The X-axis provides feedback on the tool diameter, the Z-axis on the tool length, and the C-axis automatically focuses and provides feedback on the tool's radius (R) value. Currently, most tool pre-adjustment devices used in China are manual, meaning the X, Z, and C-axis positioning is done manually by the operator. Measurements require selecting measurement points and methods, resulting in low efficiency. Furthermore, manual focusing and point selection, coupled with human judgment of measurement results, can lead to significant errors.

[0003] The tool information flow in the smart workshop is automated and integrated. After the tool assembly is completed, the measurement task is automatically generated by the tool management system according to a certain format and sent to the tool pre-adjustment instrument. The measurement task should not only include various process information, production information and tool characteristic information, but also, in order to achieve fully automatic measurement, it must also include the tool measurement coordinate point information.

[0004] With the introduction and gradual development of fully automatic tool presetting machines in China, these machines generally employ macro programs for automatic tool measurement. These macro programs require presetting tool measurement points, which are crucial for accurate tool parameter measurement, whether done manually or automatically. Current fully automatic measurement methods have certain drawbacks. Because the assembled tool length (including the tool holder and other accessories) is not a fixed value, and the diameter (D) and radius (R) measurements are related to the tool length, measurement points require manual input of coordinate values. This necessitates manual measurement before determining the measurement points. This method is not truly automatic. While feasible for batches of tools of the same size, it cannot pre-set measurement points for tools with different lengths, diameters, and radius (R). Furthermore, the tools used in machining consist of a tool holder, the tool itself, and accessories; the assembled tool length is not a fixed value, as it is not simply the sum of the tool holder and tool lengths. This makes it impossible for fully automatic measurement to accurately determine measurement points, failing to achieve the goal of automatically and accurately measuring tool parameters. Moreover, manual measurement is dependent on the operator's skill level, easily leading to measurement errors and low efficiency. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by disclosing an automatic tool measurement method. This method does not rely on prior knowledge of the assembled tool length (as this length is dynamic). It only requires the tool's nominal diameter and bottom tooth nominal value, the pre-adjustment magnification β, and the display field of view to automatically calculate the measurement points of the tool. Based on these measurement points, the actual values ​​of the tool system length, tool diameter, and bottom tooth size are accurately measured, thereby improving measurement efficiency and accuracy and achieving true automated tool measurement. Specifically:

[0006] An automatic tool measurement method includes the following steps:

[0007] S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width ;

[0008] S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool ;

[0009] S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the tool presetter;

[0010] S4. Input the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer. The host computer uses the corresponding working parameters and nominal values ​​to determine the tool measurement method, and controls the tool presetter to automatically measure the dimensions of the tool system according to the determined tool measurement method.

[0011] Preferably, the method for determining the tool measurement includes:

[0012] when and In this case, a two-step measurement method is used for tool measurement; the first step is that the tool pre-adjustment instrument automatically measures the length of the tool system based on the tool measurement points. The second step is that after the tool pre-adjustment device changes the coordinates of the tool measurement point, it automatically measures the tool diameter simultaneously. and the bottom teeth of the cutting tool .

[0013] when and At that time, a three-step measurement method was adopted as the tool measurement method; the first step was that the tool pre-adjustment instrument automatically measured the length of the tool system based on the tool measurement points. The second step is that after the tool pre-adjustment device changes the coordinates of the tool measurement point, it automatically measures the bottom teeth of the tool. The third step is that after the tool pre-adjustment device changes the coordinates of the tool measurement point again, it automatically measures the tool diameter. .

[0014] when At that time, a combination of a three-step measurement method and a point-based measurement method was used as the tool measurement method; the first step was that the tool pre-adjustment instrument automatically measured the length of the tool system based on the tool measurement points. The second step involves using a point-sampling measurement method to measure the bottom teeth of the cutting tool. The third step is for the tool pre-adjustment device to automatically measure the tool diameter based on the points taken in the second step. .

[0015] Preferably, the tool pre-adjustment device automatically measures the length of the tool system based on the tool measurement point. Includes the following steps:

[0016] S411, the host computer calculates the nominal length of the tool system based on the nominal height of the tool holder and the nominal cutting length of the tool. and the nominal length value As the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system;

[0017] S412, based on the nominal diameter of the tool and the nominal bottom teeth of the cutting tool Let the coordinates of the tool measuring point on the X-axis of the pre-adjustment coordinate system be... ;

[0018] S413, Set the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system. and coordinates on the X-axis Send to the tool presetter;

[0019] S414, the drive tool pre-adjuster positions the tool measurement point on the X-axis of the pre-adjuster coordinate system. At this point, the tool measuring point is positioned on the Z-axis of the pre-adjustment coordinate system. Place;

[0020] S415, drive the tool presetter to move the tool measurement point up and down along the Z-axis of the presetter coordinate system until the tool tip is found; then rotate the tool presetter spindle 360° to find the highest point in the tool length direction.

[0021] S416, the drive tool pre-adjuster positions the tool measurement point on the Z-axis coordinate of the pre-adjuster coordinate system. Immediately after processing, the precise length of the tool system is measured. .

[0022] Preferably, when and At the same time, the tool diameter is automatically measured. and the bottom teeth of the cutting tool The tool measuring point is located at the Z-axis coordinate of the pre-adjustment coordinate system. Under the premise of this condition, the tool pre-adjustment device moves the tool measurement point along the negative Z-axis of the pre-adjustment device coordinate system. After the spindle of the rotary pre-adjuster is focused, the tool diameter is immediately measured. and the bottom teeth of the cutting tool .

[0023] Preferably, when and At that time, the bottom teeth of the cutting tool are automatically measured. The tool measuring point is located at the Z-axis coordinate of the pre-adjustment coordinate system. Under the premise of this condition, the tool pre-adjustment device moves the tool measurement point along the negative Z-axis of the pre-adjustment device coordinate system. After the spindle of the rotary pre-adjuster is focused, the bottom teeth of the tool are immediately measured. .

[0024] Preferably, when and At that time, the diameter of the cutting tool is automatically measured. It is during the completion of the bottom teeth of the cutting tool After measurement, keeping the coordinates of the tool measurement point on the Z-axis of the presetter coordinate system unchanged, drive the tool presetter to position the coordinates of the tool measurement point on the X-axis of the presetter coordinate system. At this point, after the spindle of the rotary pre-adjuster is focused, the tool diameter is immediately measured. .

[0025] Preferably, when At that time, the point measurement method was used to measure the bottom teeth of the cutting tool. Includes the following steps:

[0026] Drive the rotary pre-adjuster spindle to focus;

[0027] The first measuring point is located on the X-axis of the pre-adjustment instrument coordinate system. The first measuring point is located on the Z-axis of the pre-adjustment instrument coordinate system. At that location, and at the camera's field of view height. of Coordinate location; the coordinates at this location are read and recorded by the preset instrument;

[0028] The second measuring point is located on the X-axis of the pre-adjustment instrument coordinate system, and moved relative to the first measuring point in the positive X-axis direction. The position of the value; the second measuring point is on the Z-axis of the pre-adjustment coordinate system, moved relative to the first measuring point in the positive Z-axis direction. The position of the value; the preset instrument reads and records the coordinates at that location;

[0029] The third measuring point is located on the X-axis of the pre-adjustment instrument coordinate system, and moved relative to the first measuring point in the positive X-axis direction. The position of the value; the third measuring point is on the Z-axis of the pre-adjustment coordinate system, moved relative to the first measuring point in the positive Z-axis direction. The position of the value; the preset instrument reads and records the coordinates at that location;

[0030] After obtaining the coordinate data of the three measuring points, the tool pre-adjustment device fits the coordinate data of the three measuring points to obtain the tool root teeth. .

[0031] Preferably, when At that time, the diameter of the cutting tool is automatically measured. Under the condition that the coordinates of the third measuring point remain unchanged, the pre-adjustment instrument automatically measures the tool diameter. .

[0032] The beneficial technical effects of this invention are as follows:

[0033] This technical solution proposes an automatic tool measurement method that does not rely on the tool holder and the length of the tool system after tool assembly plus the length of the tool holder (because this length is dynamic). It only needs to calculate the measurement points of the tool to be measured based on the nominal diameter and nominal R value of the tool, and accurately measure the length of the tool system, the tool diameter, and the actual value of the tool bottom teeth, thereby improving measurement efficiency and accuracy and realizing true automated tool measurement. Attached Figure Description

[0034] Figure 1 This is a basic implementation flowchart of the technical solution;

[0035] Figure 2 This is a preferred implementation flowchart of the technical solution. Detailed Implementation

[0036] To make the purpose, technical solution and advantages of the invention clearer, the technical solution of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the invention, but not all embodiments.

[0037] Therefore, the following detailed description of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] Example 1

[0039] In actual implementation, the cutting tool is mounted on the tool holder and assembled with the tool holder to form a tool system. After the tool system is mounted on the spindle of the tool presetter, the axis of the tool system and the axis of the tool presetter spindle are theoretically coincident. The X-axis coordinate of the tool presetter spindle axis in the tool presetter coordinate system is determined. The Z-coordinate of the reference plane of the tool presetter spindle in the coordinate system is determined.

[0040] Based on this, this embodiment discloses an automatic tool measurement method, as a preferred embodiment of the present invention, such as... Figure 1 As shown, it includes the following steps:

[0041] S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width .

[0042] S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool .

[0043] S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the cutting tool presetter.

[0044] S4. Input the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer. The host computer uses the corresponding working parameters and nominal values ​​to determine the tool measurement method, and controls the tool presetter to automatically measure the dimensions of the tool system according to the determined tool measurement method.

[0045] Example 2

[0046] This embodiment discloses an automatic tool measurement method, which, as a preferred implementation of the present invention, includes the following steps:

[0047] S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width .

[0048] S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool .

[0049] S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the cutting tool presetter.

[0050] S4: Input the operating parameters of the tool pre-setting device and the nominal values ​​of the tool holder and tool into the host computer. The host computer then uses the corresponding operating parameters and nominal values ​​to obtain... and Therefore, the two-step measurement method is determined to be the tool measurement method.

[0051] The first step is for the tool pre-adjustment unit to automatically measure the length of the tool system based on the tool measurement points. This includes the following steps:

[0052] S411, the host computer calculates the nominal length of the tool system based on the nominal height of the tool holder and the nominal cutting length of the tool. and the nominal length value As the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system;

[0053] S412, based on the nominal diameter of the tool and the nominal bottom teeth of the cutting tool Let the coordinates of the tool measuring point on the X-axis of the pre-adjustment coordinate system be... ;

[0054] S413, Set the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system. and coordinates on the X-axis Send to the tool presetter;

[0055] S414, the drive tool pre-adjuster positions the tool measurement point on the X-axis of the pre-adjuster coordinate system. At this point, the tool measuring point is positioned on the Z-axis of the pre-adjustment coordinate system. Place;

[0056] S415, drive the tool presetter to move the tool measurement point up and down along the Z-axis of the presetter coordinate system until the tool tip is found (the tool tip is the endpoint structure of the tool system on the tool presetter that measures the effective tool length value, which is applied to the machining of the part); then rotate the tool presetter spindle 360° to find the highest point in the tool length direction (the tool presetter spindle needs to rotate, and only by rotating can the highest point of the tool tip be found).

[0057] S416, the drive tool pre-adjuster positions the tool measurement point on the Z-axis coordinate of the pre-adjuster coordinate system. Immediately after processing, the precise length of the tool system is measured. Among them, due to the height of the field of vision. of It is a precise Z-axis coordinate value. Only after this coordinate value is determined can the subsequent fixed-point measurement continue.

[0058] The second step involves automatically and simultaneously measuring the tool diameter. and the bottom teeth of the cutting tool : The tool measuring point is located at the Z-axis coordinate of the pre-adjustment coordinate system. Under the premise of this condition, the tool pre-adjustment device moves the tool measurement point along the negative Z-axis of the pre-adjustment device coordinate system. After the spindle of the rotary pre-adjuster is focused, the tool diameter is immediately measured. and the bottom teeth of the cutting tool .

[0059] Example 3

[0060] This embodiment discloses an automatic tool measurement method, which, as a preferred implementation of the present invention, includes the following steps:

[0061] S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width .

[0062] S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool .

[0063] S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the cutting tool presetter.

[0064] S4: Input the operating parameters of the tool pre-setting device and the nominal values ​​of the tool holder and tool into the host computer. The host computer then uses the corresponding operating parameters and nominal values ​​to obtain... and Therefore, the three-step measurement method is determined to be the tool measurement method.

[0065] The first step is for the tool pre-adjustment unit to automatically measure the length of the tool system based on the tool measurement points. This includes the following steps:

[0066] S411, the host computer calculates the nominal length of the tool system based on the nominal height of the tool holder and the nominal cutting length of the tool. and the nominal length value As the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system;

[0067] S412, based on the nominal diameter of the tool and the nominal bottom teeth of the cutting tool Let the coordinates of the tool measuring point on the X-axis of the pre-adjustment coordinate system be... ;

[0068] S413, Set the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system. and coordinates on the X-axis Send to the tool presetter;

[0069] S414, the drive tool pre-adjuster positions the tool measurement point on the X-axis of the pre-adjuster coordinate system. At this point, the tool measuring point is positioned on the Z-axis of the pre-adjustment coordinate system. Place;

[0070] S415, drive the tool presetter to move the tool measurement point up and down along the Z-axis of the presetter coordinate system until the tool tip is found; then rotate the tool presetter spindle 360° to find the highest point in the tool length direction.

[0071] S416, the drive tool pre-adjuster positions the tool measurement point on the Z-axis coordinate of the pre-adjuster coordinate system. Immediately after processing, the precise length of the tool system is measured. .

[0072] Secondly, in the second step, after the tool pre-adjustment device changes the coordinates of the tool measurement point, it automatically measures the bottom teeth of the tool. That is: automatic measurement of the bottom teeth of cutting tools The tool measuring point is located at the Z-axis coordinate of the pre-adjustment coordinate system. Under the premise of this condition, the tool pre-adjustment device moves the tool measurement point along the negative Z-axis of the pre-adjustment device coordinate system. After the spindle of the rotary pre-adjuster is focused, the bottom teeth of the tool are immediately measured. .

[0073] The final, third step involves automatically measuring the tool diameter. : After completing the bottom teeth of the tool Then, keeping the coordinates of the tool measurement point on the Z-axis of the presetter coordinate system unchanged, drive the tool presetter to position the coordinates of the tool measurement point on the X-axis of the presetter coordinate system. At this point, after the spindle of the rotary pre-adjuster is focused, the tool diameter is immediately measured. .

[0074] Example 4

[0075] This embodiment discloses an automatic tool measurement method, which, as a preferred implementation of the present invention, includes the following steps:

[0076] S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width .

[0077] S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool .

[0078] S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the cutting tool presetter.

[0079] S4: Input the operating parameters of the tool pre-setting device and the nominal values ​​of the tool holder and tool into the host computer. The host computer then uses the corresponding operating parameters and nominal values ​​to obtain... Therefore, it was determined that a combination of the three-step measurement method and the point-sampling measurement method would be used as the tool measurement method.

[0080] The first step is for the tool pre-adjustment unit to automatically measure the length of the tool system based on the tool measurement points. This includes the following steps:

[0081] S411, the host computer calculates the nominal length of the tool system based on the nominal height of the tool holder and the nominal cutting length of the tool. and the nominal length value As the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system;

[0082] S412, based on the nominal diameter of the tool and the nominal bottom teeth of the cutting tool Let the coordinates of the tool measuring point on the X-axis of the pre-adjustment coordinate system be... ;

[0083] S413, Set the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system. and coordinates on the X-axis Send to the tool presetter;

[0084] S414, the drive tool pre-adjuster positions the tool measurement point on the X-axis of the pre-adjuster coordinate system. At this point, the tool measuring point is positioned on the Z-axis of the pre-adjustment coordinate system. Place;

[0085] S415, drive the tool presetter to move the tool measurement point up and down along the Z-axis of the presetter coordinate system until the tool tip is found; then rotate the tool presetter spindle 360° to find the highest point in the tool length direction.

[0086] The second step involves measuring the bottom teeth of the cutting tool using a point-sampling measurement method. Includes the following steps:

[0087] Drive the rotary pre-adjuster spindle to focus;

[0088] The first measuring point is located on the X-axis of the pre-adjustment instrument coordinate system. The first measuring point is located on the Z-axis of the pre-adjustment instrument coordinate system. At that location, and at the camera's field of view height. of Coordinate location; the coordinates at this location are read and recorded by the preset instrument;

[0089] The second measuring point is located on the X-axis of the pre-adjustment instrument coordinate system, and moved relative to the first measuring point in the positive X-axis direction. The position of the value; the second measuring point is on the Z-axis of the pre-adjustment coordinate system, moved relative to the first measuring point in the positive Z-axis direction. The position of the value; the preset instrument reads and records the coordinates at that location;

[0090] The third measuring point is located on the X-axis of the pre-adjustment instrument coordinate system, and moved relative to the first measuring point in the positive X-axis direction. The position of the value; the third measuring point is on the Z-axis of the pre-adjustment coordinate system, moved relative to the first measuring point in the positive Z-axis direction. The position of the value; the preset instrument reads and records the coordinates at that location;

[0091] After obtaining the coordinate data of the three measuring points, the tool pre-adjustment device fits the coordinate data of the three measuring points to obtain the tool root teeth. .

[0092] The final, third step involves automatically measuring the tool diameter. The tool diameter is automatically measured by the pre-adjustment instrument while keeping the coordinates of the third measuring point unchanged. .

[0093] Example 5

[0094] This embodiment discloses an automatic tool measurement method, which, as a preferred implementation of the present invention, includes the following steps:

[0095] S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width .

[0096] S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool .

[0097] S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the cutting tool presetter.

[0098] S4. Input the operating parameters of the tool pre-setting device and the nominal values ​​of the tool holder and tool into the host computer, and make a judgment. Is it greater than If yes, proceed to step S7 after completing step S6; otherwise, proceed to step S5.

[0099] S5, Determine Is it less than If yes, proceed to step S9 after completing step S6; otherwise, proceed to step S10 after completing step S6.

[0100] S6, the tool pre-adjuster automatically measures the length of the tool system based on the tool measurement point. ;

[0101] S7, using the point-sampling measurement method to measure the bottom teeth of the tool. Then, proceed to step S8;

[0102] S8, The tool pre-adjustment device automatically measures the tool diameter based on the coordinates of the points taken in step S7. Measurement complete;

[0103] S9, after the tool pre-adjuster changes the coordinates of the tool measurement point, it automatically measures the tool diameter simultaneously. and the bottom teeth of the cutting tool Measurement complete;

[0104] S10, After the tool pre-adjustment device changes the coordinates of the tool measurement point, it automatically measures the bottom teeth of the tool. Then, proceed to step S11;

[0105] S11, After the tool pre-adjuster changes the coordinates of the tool measurement point again, it automatically measures the tool diameter. .

Claims

1. An automatic tool measurement method, characterized in that, Includes the following steps: S1, Determine the operating parameters of the tool pre-adjuster, including magnification. Measure the height of the field of view and measuring field of view width ; S2, Based on the tool holder drawing number and the tool drawing number, obtain the nominal values ​​of the tool holder and the tool, including the nominal height of the tool holder, the nominal cutting length of the tool, and the nominal diameter of the tool. and the nominal bottom teeth of the cutting tool ; S3, assemble the cutting tool and tool holder to form a cutting tool system and install it on the spindle of the tool presetter; S4. Input the operating parameters of the tool presetter and the nominal values ​​of the tool holder and tool into the host computer. The host computer, combining the corresponding operating parameters and nominal values, determines the tool measurement method and controls the tool presetter to automatically measure the dimensions of the tool system based on the determined tool measurement method. Determining the tool measurement method includes: when and At that time, a two-step measurement method was adopted as the tool measurement method; the first step was that the tool pre-adjustment instrument automatically measured the length of the tool system according to the tool measurement points. The second step is that after the tool pre-adjustment device changes the coordinates of the tool measurement point, it automatically measures the tool diameter simultaneously. and the bottom teeth of the cutting tool ; when and At that time, a three-step measurement method was adopted as the tool measurement method; the first step was that the tool pre-adjustment instrument automatically measured the length of the tool system based on the tool measurement points. The second step is that after the tool pre-adjustment device changes the coordinates of the tool measurement point, it automatically measures the bottom teeth of the tool. The third step is that after the tool pre-adjustment device changes the coordinates of the tool measurement point again, it automatically measures the tool diameter. ; when At that time, a combination of a three-step measurement method and a point-based measurement method was used as the tool measurement method; the first step was that the tool pre-adjustment instrument automatically measured the length of the tool system based on the tool measurement points. The second step involves using a point-sampling measurement method to measure the bottom teeth of the cutting tool. The third step is for the tool pre-adjustment device to automatically measure the tool diameter based on the points taken in the second step. ; The tool pre-adjustment device automatically measures the length of the tool system based on the tool measurement point. Includes the following steps: S411, the host computer calculates the nominal length of the tool system based on the nominal height of the tool holder and the nominal cutting length of the tool. and the nominal length value As the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system; S412, based on the nominal diameter of the tool and the nominal bottom teeth of the cutting tool Let the coordinates of the tool measuring point on the X-axis of the pre-adjustment coordinate system be... ; S413, Set the initial coordinates of the tool measurement point on the Z-axis of the pre-adjustment coordinate system. and coordinates on the X-axis Send to the tool presetter; S414, the drive tool pre-adjuster positions the tool measurement point on the X-axis of the pre-adjuster coordinate system. At this point, the tool measuring point is positioned on the Z-axis of the pre-adjustment coordinate system. Place; S415, drive the tool presetter to move the tool measurement point up and down along the Z-axis of the presetter coordinate system until the tool tip is found; then rotate the tool presetter spindle 360° to find the highest point in the tool length direction. S416, the drive tool pre-adjuster positions the tool measurement point on the Z-axis coordinate of the pre-adjuster coordinate system. Immediately after processing, the precise length of the tool system is measured. .

2. The automatic tool measurement method as described in claim 1, characterized in that: when and At the same time, the tool diameter is automatically measured. and the bottom teeth of the cutting tool The tool measuring point is located at the Z-axis coordinate of the pre-adjustment coordinate system. Under the premise of this condition, the tool pre-adjustment device moves the tool measurement point along the negative Z-axis of the pre-adjustment device coordinate system. After the spindle of the rotary pre-adjuster is focused, the tool diameter is immediately measured. and the bottom teeth of the cutting tool .

3. The automatic tool measurement method as described in claim 1, characterized in that: when and At that time, the bottom teeth of the cutting tool are automatically measured. The tool measuring point is located at the Z-axis coordinate of the pre-adjustment coordinate system. Under the premise of this condition, the tool pre-adjustment device moves the tool measurement point along the negative Z-axis of the pre-adjustment device coordinate system. After the spindle of the rotary pre-adjuster is focused, the bottom teeth of the tool are immediately measured. .

4. The automatic tool measurement method as described in claim 3, characterized in that: when and At that time, the diameter of the cutting tool is automatically measured. It is during the completion of the bottom teeth of the cutting tool After measurement, keeping the coordinates of the tool measurement point on the Z-axis of the presetter coordinate system unchanged, drive the tool presetter to position the coordinates of the tool measurement point on the X-axis of the presetter coordinate system. At this point, after the spindle of the rotary pre-adjuster is focused, the tool diameter is immediately measured. .

5. The automatic tool measurement method as described in claim 1, characterized in that: when At that time, the point measurement method was used to measure the bottom teeth of the cutting tool. Includes the following steps: Drive the rotary pre-adjuster spindle to focus; The first measuring point is located on the X-axis of the pre-adjustment instrument coordinate system. The first measuring point is located on the Z-axis of the pre-adjustment instrument coordinate system. At that location, and at the camera's field of view height. of Coordinate location; the coordinates at this location are read and recorded by the preset instrument; The second measuring point is located on the X-axis of the pre-adjustment instrument coordinate system, and moved relative to the first measuring point in the positive X-axis direction. The position of the value; the second measuring point is on the Z-axis of the pre-adjustment coordinate system, moved relative to the first measuring point in the positive Z-axis direction. The position of the value; the preset instrument reads and records the coordinates at that location; The third measuring point is located on the X-axis of the pre-adjustment instrument coordinate system, and moved relative to the first measuring point in the positive X-axis direction. The position of the value; the third measuring point is on the Z-axis of the pre-adjustment coordinate system, moved relative to the first measuring point in the positive Z-axis direction. The position of the value; the preset instrument reads and records the coordinates at that location; After obtaining the coordinate data of the three measuring points, the tool pre-adjustment device fits the coordinate data of the three measuring points to obtain the tool root teeth. .

6. The automatic tool measurement method as described in claim 5, characterized in that: when At that time, the diameter of the cutting tool is automatically measured. Under the condition that the coordinates of the third measuring point remain unchanged, the pre-adjustment instrument automatically measures the tool diameter. .

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