Automatic tool measuring method

Abstract

The invention relates to the technical field of numerical control machining, in particular to an automatic tool measuring method which comprises the steps that working parameters of a tool presetting instrument and nominal values of a tool handle and a tool are determined; assembling a cutter and a cutter handle to form a cutter system, and mounting the cutter system on a main shaft of the cutter pre-adjusting instrument; the working parameters of the tool presetting instrument and the nominal values of the tool handle and the tool are input into an upper computer, the upper computer is used for determining a tool measuring mode in combination with the corresponding working parameters and the nominal values, and the tool presetting instrument is controlled to automatically measure the size of the tool system according to the determined tool measuring mode. According to the technical scheme, the measuring point of the to-be-measured cutter can be automatically calculated only according to the nominal diameter and the nominal R value of the cutter without depending on the length of the cutter handle and the cutter system after the cutter is assembled and the length of the cutter handle, and the length of the cutter system, the cutter diameter and the actual value of the cutter bottom tooth are accurately measured; therefore, the measurement efficiency and accuracy are improved, and the automatic measurement of the cutter in a real sense is realized.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining, and in particular to an automatic tool measuring method. Background Art

[0002] The fully automatic tool presetter is a tool preset and testing device that is controlled by CNC, driven by a motor, and has automatic positioning of the X, Z, and C axes. The X axis feeds back the diameter of the tool, the Z axis feeds back the length of the tool, and the C axis rotates and focuses automatically, which can feed back the R value of the tool. Most of the tool presetters currently used in China are manual tool presetters, that is, the positioning of the X, Z, and C axes is done manually by the operator. During the measurement, it is necessary to select the measurement point and the measurement method. The measurement process is inefficient, and the measurement results are judged manually by humans due to manual focusing and selection of measurement points, which will lead to large errors in the measurement results.

[0003] The tool information flow of the smart workshop is automatically integrated. The measurement task after the tool assembly is completed is automatically generated by the tool management system in a certain format and sent to the tool presetter. The measurement task should not only include various process information, production information and tool feature information, but also the tool's measurement coordinate point information must be included to achieve fully automatic measurement.

[0004] With the introduction of fully automatic tool presetters and their gradual development in China, fully automatic tool presetters generally use macro programs to automatically measure tools. The macro program needs to preset the measuring points of the tools. Whether the measuring points of the tools are measured manually or automatically, they are the key to accurately measuring tool parameters. The current fully automatic measurement method has certain disadvantages, that is, since the tool length after the tool, tool holder and other accessories are assembled is not a fixed value, and the measurement of diameters D and R are related to the length measurement value of the tool, the measuring point needs to be manually input by the coordinate value, which requires manual measurement before the measuring point can be determined. This method is not a true automatic measurement. It is feasible for batches of tools of the same size, but for tools with different tool lengths, diameters and R, the measuring points cannot be preset. The tools used in processing are composed of tool holders, tools, or accessories. The length of the assembled tool is not a fixed value, because it is not a simple superposition of the tool holder and tool length. This makes it impossible to accurately determine the measuring point in the fully automatic measurement process, and it is impossible to achieve the purpose of automatically and accurately measuring tool parameters. In addition, manual measurement is related to the measurement technology of the measurement personnel, which is easy to cause measurement deviation and low measurement efficiency. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention discloses a method for automatic tool measurement, which does not rely on knowing the length of the tool after assembly in advance (because the length is dynamic), and can automatically calculate the measuring point of the tool to be measured based on the nominal diameter and bottom tooth nominal of the tool, the magnification β of the presetter, and the size of the display field of view, and accurately measure the actual value of the tool system length, tool diameter and bottom tooth of the tool based on the measuring point, thereby improving the measurement efficiency and accuracy, and realizing the real sense of automatic tool measurement. The details are as follows:

[0006] A method for automatic tool measurement comprises the following steps:

[0007] S1, determining the working parameters of the tool presetter, including the magnification β, the measuring field height H and the measuring field width W;

[0008] S2, based on the tool handle drawing number and the tool drawing number, obtaining the nominal values ​​of the tool handle and the tool, including the nominal value of the tool handle height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool;

[0009] S3, assembling the tool and the tool holder to form a tool system and installing it on the spindle of the tool presetter;

[0010] S4, inputting the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer, using the host computer to determine the tool measurement method in combination with the corresponding working parameters and nominal values, and controlling the tool presetter to automatically measure the dimensions of the tool system according to the determined tool measurement method.

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

[0012] When R×β≤H and When the tool is measured, a two-step measurement method is used; the first step is that the tool presetter automatically measures the tool system length L2 according to the tool measuring point; the second step is that after the tool presetter changes the coordinates of the tool measuring point, it automatically measures the tool diameter D1 and the tool bottom tooth R1 at the same time.

[0013] When R×β≤H and When the tool is measured, a three-step measurement method is used as the tool measurement method; the first step is that the tool presetter automatically measures the tool system length L2 according to the tool measurement point; the second step is that the tool presetter changes the tool measurement point coordinates and automatically measures the tool bottom tooth R1; the third step is that the tool presetter changes the tool measurement point coordinates again and automatically measures the tool diameter D1.

[0014] When R×β>H, a three-step measurement method combined with a point measurement method is used as the tool measurement method; the first step is that the tool presetter automatically measures the tool system length L2 according to the tool measurement point; the second step is to use the point measurement method to measure the tool bottom tooth R1; the third step is that the tool presetter automatically measures the tool diameter D1 based on the point measurement in the second step.

[0015] Preferably, the tool presetter automatically measures the tool system length L2 according to the tool measurement point, comprising the following steps:

[0016] S411, the host computer calculates the nominal length value L1 of the tool system according to the nominal height value of the tool handle and the nominal blade length value of the tool, and uses the nominal length value L1 as the initial coordinate of the tool measurement point on the Z axis of the presetter coordinate system;

[0017] S412, according to the nominal diameter D of the tool and the nominal bottom tooth R of the tool, the coordinates of the tool measurement point on the X-axis of the presetter coordinate system are:

[0018] S413, the tool measurement point on the presetter coordinate system Z axis initial coordinate L1 and the coordinate on the X axis Send to tool presetter;

[0019] S414, drive the tool presetter to position the tool measurement point on the X-axis of the presetter coordinate system The tool measurement point is located at L1 of the Z axis of the presetter coordinate system;

[0020] S415, driving 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 rotating the tool presetter spindle 360° to find the highest point in the length direction of the tool;

[0021] S416, drive the tool presetter to position the tool measurement point on the Z axis coordinate of the presetter coordinate system. After processing, the precise tool system length L2 is measured immediately.

[0022] Preferably, when R×β≤H and When the tool diameter D1 and tool bottom tooth R1 are automatically measured at the same time, the tool measurement point is at the Z axis coordinate of the presetter coordinate system. Under the premise of the presetter, drive the tool presetter to move the tool measurement point along the negative direction of the Z axis of the presetter coordinate system. After rotating the presetter spindle for focusing, the tool diameter D1 and tool bottom tooth R1 are immediately measured.

[0023] Preferably, when R×β≤H and When the tool bottom tooth R1 is automatically measured, the tool measurement point is at the Z axis coordinate of the presetter coordinate system. Under the premise of the presetter, drive the tool presetter to move the tool measurement point along the negative direction of the Z axis of the presetter coordinate system. After rotating the presetter spindle for focusing, the tool bottom tooth R1 is immediately measured.

[0024] Preferably, when R×β≤H and When the tool diameter D1 is automatically measured, the tool bottom tooth R1 is completed, and the coordinates of the tool measuring point on the Z axis of the presetter coordinate system are kept unchanged, and the tool presetter is driven to adjust the coordinates of the tool measuring point on the X axis of the presetter coordinate system to the same position. After the presetter spindle is rotated to focus, the tool diameter D1 is measured immediately.

[0025] Preferably, when R×β>H, measuring the tool bottom tooth R1 by using the point measurement method includes the following steps:

[0026] Drive the main axis of the rotary presetter to focus;

[0027] The first measuring point of the point measurement is taken on the X-axis of the presetter coordinate system. The first measuring point is at L2 of the Z axis of the presetter coordinate system and is at the 1 / 2 coordinate position of the camera field of view height H. The presetter reads and records the coordinates at this location.

[0028] The second measuring point of the point measurement is taken on the X-axis of the presetter coordinate system, and is moved relative to the first measuring point in the positive direction of the X-axis by the value of R·sin 45°; the second measuring point is taken on the Z-axis of the presetter coordinate system, and is moved relative to the first measuring point in the positive direction of the Z-axis by the value of R·sin 45°; the presetter reads and records the coordinates at this point;

[0029] The third measuring point of the point measurement is taken on the X-axis of the presetter coordinate system, and is moved by the value R in the positive direction of the X-axis relative to the first measuring point; the third measuring point is taken on the Z-axis of the presetter coordinate system, and is moved by the value R in the positive direction of the Z-axis relative to the first measuring point; the presetter reads and records the coordinates at this point;

[0030] After obtaining the coordinate data of the three measuring points, the tool presetter obtains the tool bottom tooth R1 by fitting according to the coordinate data of the three measuring points.

[0031] Preferably, when R×β>H, the tool diameter D1 is automatically measured while keeping the coordinates of the third measuring point unchanged, and the presetter automatically measures the tool diameter D1.

[0032] Beneficial technical effects brought by the present invention:

[0033] The technical solution proposes an automatic tool measurement method which does not rely on the length of the tool system after the tool handle and the tool are assembled plus the length of the tool handle (because the length is dynamic). It only needs to automatically calculate the measuring point 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 the measurement efficiency and accuracy and realizing true automatic tool measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a basic implementation flow chart of this technical solution;

[0035] Figure 2 This is a preferred implementation flow chart of this technical solution. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Therefore, the following detailed description of the invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

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

[0040] On this basis, this embodiment discloses a tool automatic measurement method, as a preferred implementation of the present invention, such as Figure 1 As shown, the following steps are included:

[0041] S1, determine the working parameters of the tool presetter, including the magnification β, the measurement field height H and the measurement field width W.

[0042] S2, based on the tool holder drawing number and the tool drawing number, obtaining the nominal values ​​of the tool holder and the tool, including the nominal value of the tool holder height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool.

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

[0044] S4, inputting the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer, using the host computer to determine the tool measurement method in combination with the corresponding working parameters and nominal values, and controlling 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 a tool automatic measurement method, which, as a preferred implementation of the present invention, includes the following steps:

[0047] S1, determine the working parameters of the tool presetter, including the magnification β, the measurement field height H and the measurement field width W.

[0048] S2, based on the tool holder drawing number and the tool drawing number, obtaining the nominal values ​​of the tool holder and the tool, including the nominal value of the tool holder height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool.

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

[0050] S4, input the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer, and use the host computer to combine the corresponding working parameters and nominal values ​​to obtain R×β≤H and It is determined that the two-step measurement method is used as the tool measurement method.

[0051] In the first step, the tool presetter automatically measures the tool system length L2 according to the tool measurement point, including the following steps:

[0052] S411, the host computer calculates the nominal length value L1 of the tool system according to the nominal height value of the tool handle and the nominal blade length value of the tool, and uses the nominal length value L1 as the initial coordinate of the tool measurement point on the Z axis of the presetter coordinate system;

[0053] S412, according to the nominal diameter D of the tool and the nominal bottom tooth R of the tool, the coordinates of the tool measurement point on the X-axis of the presetter coordinate system are:

[0054] S413, the tool measurement point on the presetter coordinate system Z axis initial coordinate L1 and the coordinate on the X axis Send to tool presetter;

[0055] S414, drive the tool presetter to position the tool measurement point on the X-axis of the presetter coordinate system The tool measurement point is located at L1 of the Z axis of the presetter coordinate system;

[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 end point structure of the tool system measuring the effective tool length value on the tool presetter, and this length value acts on part processing); then rotate the tool presetter spindle 360° to find the highest point in the tool length direction (the spindle of the tool presetter needs to rotate, and the highest point of the tool tip can be found through rotation);

[0057] S416, drive the tool presetter to position the tool measurement point on the Z axis coordinate of the presetter coordinate system. After the processing, the accurate tool system length L2 is measured immediately. Among them, because 1 / 2 of the field of view height H is an accurate Z-axis coordinate value, only after determining this coordinate value can the following fixed-point measurement be continued.

[0058] The second step is to automatically measure the tool diameter D1 and tool bottom tooth R1 at the same time: the tool measurement point is at the Z axis coordinate of the presetter coordinate system Under the premise of the presetter, drive the tool presetter to move the tool measurement point along the negative direction of the Z axis of the presetter coordinate system. After rotating the presetter spindle for focusing, the tool diameter D1 and tool bottom tooth R1 are immediately measured.

[0059] Example 3

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

[0061] S1, determine the working parameters of the tool presetter, including the magnification β, the measurement field height H and the measurement field width W.

[0062] S2, based on the tool holder drawing number and the tool drawing number, obtaining the nominal values ​​of the tool holder and the tool, including the nominal value of the tool holder height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool.

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

[0064] S4, input the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer, and use the host computer to combine the corresponding working parameters and nominal values ​​to obtain R×β≤H and It is determined that the three-step measurement method is used as the tool measurement method.

[0065] In the first step, the tool presetter automatically measures the tool system length L2 according to the tool measurement point, including the following steps:

[0066] S411, the host computer calculates the nominal length value L1 of the tool system according to the nominal height value of the tool handle and the nominal blade length value of the tool, and uses the nominal length value L1 as the initial coordinate of the tool measurement point on the Z axis of the presetter coordinate system;

[0067] S412, according to the nominal diameter D of the tool and the nominal bottom tooth R of the tool, the coordinates of the tool measurement point on the X-axis of the presetter coordinate system are:

[0068] S413, the tool measurement point on the presetter coordinate system Z axis initial coordinate L1 and the coordinate on the X axis Send to tool presetter;

[0069] S414, drive the tool presetter to position the tool measurement point on the X-axis of the presetter coordinate system The tool measurement point is located at L1 of the Z axis of the presetter coordinate system;

[0070] S415, driving 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 rotating the tool presetter spindle 360° to find the highest point in the length direction of the tool;

[0071] S416, drive the tool presetter to position the tool measurement point on the Z axis coordinate of the presetter coordinate system. After processing, the precise tool system length L2 is measured immediately.

[0072] In the second step, after the tool presetter changes the coordinates of the tool measurement point, it automatically measures the tool bottom tooth R1, that is, the tool bottom tooth R1 is automatically measured when the tool measurement point is at the Z-axis coordinate of the presetter coordinate system. Under the premise of the presetter, drive the tool presetter to move the tool measurement point along the negative direction of the Z axis of the presetter coordinate system. After rotating the presetter spindle for focusing, the tool bottom tooth R1 is immediately measured.

[0073] The last step is to automatically measure the tool diameter D1: After completing the tool bottom tooth R1, keep the coordinates of the tool measurement point on the Z axis of the presetter coordinate system unchanged, and drive the tool presetter to position the coordinates of the tool measurement point on the X axis of the presetter coordinate system at After the presetter spindle is rotated to focus, the tool diameter D1 is measured immediately.

[0074] Example 4

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

[0076] S1, determine the working parameters of the tool presetter, including the magnification β, the measurement field height H and the measurement field width W.

[0077] S2, based on the tool holder drawing number and the tool drawing number, obtaining the nominal values ​​of the tool holder and the tool, including the nominal value of the tool holder height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool.

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

[0079] S4, input the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer, and use the host computer to combine the corresponding working parameters and nominal values ​​to obtain R×β>H, then determine to use the three-step measurement method combined with the point measurement method as the tool measurement method.

[0080] In the first step, the tool presetter automatically measures the tool system length L2 according to the tool measurement point, including the following steps:

[0081] S411, the host computer calculates the nominal length value L1 of the tool system according to the nominal height value of the tool handle and the nominal blade length value of the tool, and uses the nominal length value L1 as the initial coordinate of the tool measurement point on the Z axis of the presetter coordinate system;

[0082] S412, according to the nominal diameter D of the tool and the nominal bottom tooth R of the tool, the coordinates of the tool measurement point on the X-axis of the presetter coordinate system are:

[0083] S413, the tool measurement point on the presetter coordinate system Z axis initial coordinate L1 and the coordinate on the X axis Send to tool presetter;

[0084] S414, drive the tool presetter to position the tool measurement point on the X-axis of the presetter coordinate system The tool measurement point is located at L1 of the Z axis of the presetter coordinate system;

[0085] S415, driving 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 rotating the tool presetter spindle 360° to find the highest point in the length direction of the tool;

[0086] The second step is to measure the tool bottom tooth R1 using the point measurement method, which includes the following steps:

[0087] Drive the main axis of the rotary presetter to focus;

[0088] The first measuring point of the point measurement is taken on the X-axis of the presetter coordinate system. The first measuring point is at L2 of the Z axis of the presetter coordinate system and is at the 1 / 2 coordinate position of the camera field of view height H. The presetter reads and records the coordinates at this location.

[0089] The second measuring point of the point measurement is taken on the X-axis of the presetter coordinate system, and is moved relative to the first measuring point in the positive direction of the X-axis by the value of R·sin 45°; the second measuring point is taken on the Z-axis of the presetter coordinate system, and is moved relative to the first measuring point in the positive direction of the Z-axis by the value of R·sin 45°; the presetter reads and records the coordinates at this point;

[0090] The third measuring point of the point measurement is taken on the X-axis of the presetter coordinate system, and is moved by the value R in the positive direction of the X-axis relative to the first measuring point; the third measuring point is taken on the Z-axis of the presetter coordinate system, and is moved by the value R in the positive direction of the Z-axis relative to the first measuring point; the presetter reads and records the coordinates at this point;

[0091] After obtaining the coordinate data of the three measuring points, the tool presetter obtains the tool bottom tooth R1 by fitting according to the coordinate data of the three measuring points.

[0092] The last third step is to automatically measure the tool diameter D1: while keeping the coordinates of the third measuring point unchanged, the presetter automatically measures the tool diameter D1.

[0093] Example 5

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

[0095] S1, determine the working parameters of the tool presetter, including the magnification β, the measurement field height H and the measurement field width w.

[0096] S2, based on the tool holder drawing number and the tool drawing number, obtaining the nominal values ​​of the tool holder and the tool, including the nominal value of the tool holder height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool.

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

[0098] S4, inputting the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer to determine whether R×β is greater than H; if so, after completing S6, proceed to step S7; if not, proceed to step S5;

[0099] S5, Judgment Is it less than W? If so, after completing step S6, proceed to step S9; if not, after completing step S6, proceed to step S10;

[0100] S6, the tool presetter automatically measures the tool system length L2 according to the tool measurement point;

[0101] S7, after measuring the bottom tooth R1 of the tool by using the point measurement method, proceed to step S8;

[0102] S8, the tool presetter automatically measures the tool diameter D1 based on the coordinates of the point taken in step S7, and the measurement ends;

[0103] S9, after the tool presetter changes the coordinates of the tool measuring point, it automatically measures the tool diameter D1 and the tool bottom tooth R1 at the same time, and the measurement ends;

[0104] S10, after the tool presetter changes the coordinates of the tool measurement point, it automatically measures the tool bottom tooth R1 and then enters step S11;

[0105] S11, after the tool presetter changes the coordinates of the tool measuring point again, it automatically measures the tool diameter D1.

Claims

1. A method for automatic tool measurement, characterized in that: The following steps are involved: S1, determining the working parameters of the tool presetter, including the magnification β, the measuring field height H and the measuring field width W; S2, based on the tool handle drawing number and the tool drawing number, obtaining the nominal values ​​of the tool handle and the tool, including the nominal value of the tool handle height, the nominal value of the tool blade length, the nominal diameter D of the tool, and the nominal bottom tooth R of the tool; S3, assembling the tool and the tool holder to form a tool system and installing it on the spindle of the tool presetter; S4, inputting the working parameters of the tool presetter and the nominal values ​​of the tool holder and the tool into the host computer, using the host computer to determine the tool measurement method in combination with the corresponding working parameters and nominal values, and controlling the tool presetter to automatically measure the dimensions of the tool system according to the determined tool measurement method.

2. A tool automatic measurement method as claimed in claim 1, characterized in that: In step S4, determining the tool measurement method includes: When R×β≤H and When measuring the tool, a two-step measurement method is used; the first step is that the tool presetter automatically measures the tool system length L2 according to the tool measurement point; the second step is that after the tool presetter changes the coordinates of the tool measurement point, it automatically measures the tool diameter D1 and the tool bottom tooth R1 at the same time; When R×β≤H and When measuring the tool, a three-step measurement method is used; the first step is that the tool presetter automatically measures the tool system length L2 according to the tool measurement point; the second step is that the tool presetter changes the tool measurement point coordinates and automatically measures the tool bottom tooth R1; the third step is that the tool presetter changes the tool measurement point coordinates again and automatically measures the tool diameter D1; When R×β>H, a three-step measurement method combined with a point measurement method is used as the tool measurement method; the first step is that the tool presetter automatically measures the tool system length L2 according to the tool measurement point; the second step is to use the point measurement method to measure the tool bottom tooth R1; the third step is that the tool presetter automatically measures the tool diameter D1 based on the point measurement in the second step.

3. The automatic tool measuring method according to claim 2, characterized in that: The tool presetter automatically measures the tool system length L2 according to the tool measuring point, including the following steps: S411, the host computer calculates the nominal length value L1 of the tool system according to the nominal height value of the tool handle and the nominal blade length value of the tool, and uses the nominal length value L1 as the initial coordinate of the tool measurement point on the Z axis of the presetter coordinate system; S412, according to the nominal diameter D of the tool and the nominal bottom tooth R of the tool, the coordinates of the tool measurement point on the X-axis of the presetter coordinate system are: S413, the tool measurement point on the presetter coordinate system Z axis initial coordinate L1 and the coordinate on the X axis Send to tool presetter; S414, drive the tool presetter to position the tool measurement point on the X-axis of the presetter coordinate system The tool measurement point is located at L1 of the Z axis of the presetter coordinate system; S415, driving 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 rotating the tool presetter spindle 360° to find the highest point in the length direction of the tool; S416, drive the tool presetter to position the tool measurement point on the Z axis coordinate of the presetter coordinate system. After processing, the precise tool system length L2 is measured immediately.

4. A tool automatic measurement method as claimed in claim 3, characterized in that: When R×β≤H and When the tool diameter D1 and tool bottom tooth R1 are automatically measured at the same time, the tool measurement point is at the Z axis coordinate of the presetter coordinate system. Under the premise of the presetter, drive the tool presetter to move the tool measurement point along the negative direction of the Z axis of the presetter coordinate system. After rotating the presetter spindle for focusing, the tool diameter D1 and tool bottom tooth R1 are immediately measured.

5. The automatic tool measuring method according to claim 3, characterized in that: When R×β≤H and When the tool bottom tooth R1 is automatically measured, the tool measurement point is at the Z axis coordinate of the presetter coordinate system. Under the premise of the presetter, drive the tool presetter to move the tool measurement point along the negative direction of the Z axis of the presetter coordinate system. After rotating the presetter spindle for focusing, the tool bottom tooth R1 is immediately measured.

6. A tool automatic measurement method as claimed in claim 5, characterized in that: When R×β≤H and When the tool diameter D1 is automatically measured, the tool bottom tooth R1 is completed, and the coordinates of the tool measuring point on the Z axis of the presetter coordinate system are kept unchanged, and the tool presetter is driven to adjust the coordinates of the tool measuring point on the X axis of the presetter coordinate system to the same position. After the presetter spindle is rotated to focus, the tool diameter D1 is measured immediately.

7. The automatic tool measuring method according to claim 3, characterized in that: When R×β>H, the point measurement method is used to measure the tool bottom tooth R1, which includes the following steps: Drive the main axis of the rotary presetter to focus; The first measuring point of the point measurement is taken on the X-axis of the presetter coordinate system. The first measuring point is at L2 of the Z axis of the presetter coordinate system and is at the 1 / 2 coordinate position of the camera field of view height H. The presetter reads and records the coordinates at this location. The second measuring point of the point measurement is taken on the X-axis of the presetter coordinate system, and is moved relative to the first measuring point in the positive direction of the X-axis by the value of R·sin 45°; the second measuring point is taken on the Z-axis of the presetter coordinate system, and is moved relative to the first measuring point in the positive direction of the Z-axis by the value of R·sin 45°; the presetter reads and records the coordinates at this point; The third measuring point of the point measurement is taken on the X-axis of the presetter coordinate system, and is moved by the value R in the positive direction of the X-axis relative to the first measuring point; the third measuring point is taken on the Z-axis of the presetter coordinate system, and is moved by the value R in the positive direction of the Z-axis relative to the first measuring point; the presetter reads and records the coordinates at this point; After obtaining the coordinate data of the three measuring points, the tool presetter obtains the tool bottom tooth R1 by fitting according to the coordinate data of the three measuring points.

8. The automatic tool measuring method according to claim 7, characterized in that: When R×R>H, the tool diameter D1 is automatically measured while keeping the coordinates of the third measuring point unchanged. The presetter automatically measures the tool diameter D1.

Images