TWI768892B - Measurement and calibration system for cutting tool diameter and method thereof - Google Patents

Abstract

A measurement and correction method for cutting tool diameter includes: clamping and rotating a first milling cutter through a rotating device; driving the rotating device to move horizontally in one direction and an opposite direction through a displacement device; and detecting a first coordinate for initially triggering a measuring device when the first milling cutter moves horizontally in the direction, detecting a second coordinate for initially triggering the measuring device when the first milling cutter moves horizontally in the opposite direction, and calculating a difference between the first coordinate and the second coordinate as a measuring diameter of the first milling cutter, and calculating a difference between the measuring diameter and a real diameter of the first milling cutter as a calibration value through a measuring device; wherein, when the measuring device obtains a measuring diameter of a second milling cutter, the measuring device adds the measuring diameter of the second milling cutter with the calibration value to obtain a real diameter of the second milling cutter.

Description

Tool diameter measurement and correction system and method

The invention relates to a tool diameter measurement and correction technology, in particular to a tool diameter measurement and correction system and a method thereof.

Generally, most of the tool diameter measuring instruments/devices on the market judge the diameter of the milling cutter by visual identification or shielding the width of the laser. Such tool diameter measuring instruments/equipment are bulky and expensive. The surface of the knife is serrated instead of a complete cylindrical shape, which makes the problem of insufficient precision when measuring the tool, and the measured value will have an error of 0.1~0.3mm, which is beyond the allowable range, and with the Different sizes and forms of milling cutters will cause errors in the measurement of this tool diameter measuring instrument/device. Therefore, it is necessary to develop a tool diameter measuring instrument/device with high accuracy, small size and low cost.

The tool diameter measurement and correction system and the method thereof provided by the present invention have the advantages of small size, low cost and high precision.

The tool diameter measurement and correction method provided by the present invention includes: clamping and rotating a first milling cutter through a rotating device, driving the rotating device to move horizontally in one direction through a displacement device, and detecting the edge of the first milling tool through a measuring device When moving horizontally in the direction, the first coordinate of the measuring device is initially triggered, the rotation device is driven to move horizontally in the opposite direction of the direction through the displacement device, and the first milling cutter is detected horizontally in the opposite direction through the measuring device When moving, the second coordinate of the measuring device is initially triggered, the difference between the first coordinate and the second coordinate is calculated by the measuring device to be used as the measuring tool diameter of the first milling cutter, and the measuring device is used to calculate the diameter of the first milling cutter. Measure the difference between the tool diameter and its real tool diameter as a correction value. Wherein, when the measuring device obtains a measured tool diameter of a second milling cutter, the measuring device adds the measured tool diameter of the second milling tool and the correction value to obtain the real tool diameter of the second milling tool.

The tool diameter measurement and correction system provided by the present invention includes: rotating equipment, displacement equipment, and measuring equipment. The rotating device is used for clamping and rotating a first milling cutter. The displacement device is connected to the rotation device and used to drive the rotation device to move horizontally along a direction and an opposite direction of the direction. The measuring device is connected to the displacement device and is used to detect a first coordinate of the measuring device when the first milling tool moves horizontally along the direction, and initially trigger when the first milling tool moves horizontally along the opposite direction. Measure a second coordinate of the device, calculate the difference between the first coordinate and the second coordinate as a measured tool radius of the first milling cutter, and calculate the difference between the measured tool radius of the first milling tool and its real tool radius value as a correction value. Wherein, when the measuring device obtains a measured tool diameter of a second milling cutter, the measuring device adds the measured tool diameter of the second milling tool and the correction value to obtain the real tool diameter of the second milling tool.

In an embodiment of the present invention, the above-mentioned rotating device includes a main shaft of a PCB splitter, and a chuck connected to the main shaft of the PCB splitter and used for clamping and rotating the first milling cutter.

In an embodiment of the present invention, the displacement device includes a servo motor, a screw connected to the servo motor, and a rail connected to the screw and the main shaft of the PCB splitter. Wherein, the servo motor drives the screw to rotate to push the line rail, so that the line rail drives the main shaft of the PCB splitter to move horizontally along the direction and the opposite direction.

In an embodiment of the present invention, the above-mentioned measuring device includes a sensor for detecting the first coordinate and the second coordinate, and a sensor connected to the sensor for calculating the measured tool diameter, the correction value, and the first milling cutter. A motion control device for measuring the tool diameter of the second milling cutter.

In an embodiment of the present invention, obtaining the measuring tool diameter of the second milling cutter includes: clamping and rotating the second milling cutter through a rotating device, driving the rotating device to move horizontally along the direction through a displacement device, The measuring device detects the third coordinate of the measuring device when the second milling cutter moves horizontally along the direction, drives the rotating device to move horizontally along the opposite direction through the displacement device, and detects the second milling tool through the measuring device. When the tool moves horizontally in the opposite direction, the fourth coordinate of the measuring device is initially triggered, and the difference between the third coordinate and the fourth coordinate is calculated by the measuring device as the measuring tool diameter of the second milling tool.

Since the present invention adopts the tool diameter measurement and correction method, the error value of the tool diameter measurement instrument/device can be obtained as the correction value. In this way, the error of the tool diameter measuring instrument/device is compensated, and the real tool diameter of the tool is obtained more accurately, so as to improve the measurement accuracy of the tool diameter measuring instrument/device. In addition, because the present invention uses a sensor to measure the cutter diameter of the milling cutter, the volume and cost of the instruments/devices for judging the milling cutter diameter are much smaller than those of general visual recognition or shielding the width of the laser. Therefore, the tool diameter measurement and correction system and the method thereof provided by the present invention have the advantages of small size, low cost and high precision.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the following specific embodiments are given and described in detail in conjunction with the accompanying drawings.

Hereinafter, the present invention will be described in detail by illustrating various embodiments of the invention in the drawings. However, the inventive concepts may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Furthermore, the same reference numbers may be used to refer to similar elements in the drawings.

1-5, a tool diameter measurement and correction system 1 provided by an embodiment of the present invention includes a rotating device 2, a displacement device 3, and a measuring device 4, wherein the rotating device 2 and the measuring device 4Connect the displacement device 3. The rotating device 2 is used to clamp and rotate the milling cutter 5 , the displacement device 3 is used to drive the rotating device 2 to move horizontally along a direction A and an opposite direction B of the direction A, and the measuring device 4 is used to detect the milling cutter 5 When moving horizontally along the direction A, the coordinate C1 of the measuring device 4 is initially triggered, and the coordinate C2 of the initial triggering measuring device 4 when the milling cutter 5 moves horizontally along the opposite direction B, and the difference between the coordinate C1 and the coordinate C2 is calculated The value is used as a measured tool diameter of the milling cutter 5, and the difference between the measured tool diameter of the milling tool 5 and its real tool diameter is calculated as a correction value.

In detail, the rotating device 2 includes a main shaft 21 of the PCB splitter and a chuck 22, wherein the chuck 22 is connected to the main shaft 21 of the PCB splitter and used to clamp and rotate the milling cutter 5, the main shaft 21 of the PCB splitter and the clamp The head 22 belongs to the components in the PCB splitter, but these components are only examples, and those skilled in the art can select different rotating devices according to actual needs, so the present invention is not limited to this. In addition, the chuck 22 can hold the milling cutter 5 in a pneumatic, manual or other manner, and the present invention is not limited thereto. The displacement device 3 includes a servo motor 31, a screw 32, and a linear rail 33, wherein the screw 32 is connected to the servo motor 31, and the linear rail 33 is connected to the screw 32 and the main shaft 21 of the PCB splitter. The servo motor 31 is used to drive the screw 32 to rotate to Push the rail 33, so that the rail 33 drives the main shaft 21 of the PCB splitter to move horizontally along the direction A and the opposite direction B of the direction A. The servo motor 31, the screw 32, and the rail 33 belong to the PCB splitter. components, but these components are only examples, and those skilled in the art can select different displacement devices according to actual needs, so the present invention is not limited to this. The measuring device 4 includes a sensor 41 and a motion control device 42, wherein the sensor 41 is used to detect the coordinates C1 and C2, and the motion control device 42 is connected to the sensor 41 and used to calculate the measured tool diameter and correction value of the milling cutter 5. The sensor 41 and the motion control device 42 belong to the components in the PCB splitter, but these components are only examples, and those skilled in the art can select different measurement equipment according to actual needs, so the present invention is not limited thereto. In addition, it should be noted that the application of the tool diameter measurement and correction system 1 provided by the present invention to the PCB splitter is only an example, and those skilled in the art can apply the tool diameter measurement and correction system 1 provided by the present invention to The method is applied to other tool radius measurement ranges.

In this embodiment, the tool diameter measurement and correction system 1 provided by the present invention performs the tool diameter measurement and correction method including step S1 : clamping and rotating the milling cutter 5 through the rotating device 2 ; step S3 : using the displacement device 3 Drive the rotating device 2 to move horizontally along the direction A; Step S5: detect the coordinate C1 of the measuring device 4 when the milling cutter 5 moves horizontally along the direction A through the measuring device 4; Step S7: drive the rotation through the displacement device 3 The device 2 moves horizontally in the opposite direction B of the direction A; Step S9: detects the coordinate C2 of the initial triggering measurement device 4 when the milling cutter 5 moves horizontally in the opposite direction B through the measurement device 4; Step S11: Through the measurement The device 4 calculates the difference between the coordinates C1 and C2 as a measured tool diameter of the milling cutter 5; and step S13: calculates the difference between the measured tool diameter of the milling tool 5 and its real tool diameter through the measuring device 4 as A correction value, as shown in Figure 6.

Specifically, the tool diameter measurement and calibration method implemented by the present invention is performed under the condition that the rotary device 2 clamps the milling cutter 5 and continuously rotates the milling cutter 5 . When the displacement device 3 drives the rotating device 2 to move horizontally along the direction A, the milling cutter 5 initially contacts the sensing point P of the sensor 41 in the measuring device 4 to trigger the sensor 41 to detect the coordinate C1 of the sensing point P, and The motion control device 42 receives and records the coordinate C1 of the sensing point P. Then, the milling cutter 5 is continuously moved horizontally in the direction A until it passes the sensing point P of the sensor 41 in the measuring device 4 . Next, when the displacement device 3 drives the rotating device 2 to move horizontally in the opposite direction B of the direction A, the milling cutter 5 initially touches the sensing point P of the sensor 41 in the measuring device 4 to trigger the sensor 41 to detect the sensing point. The coordinate C2 of P, and the motion control device 42 receives and records the coordinate C2 of the sensing point P. Then, the milling cutter 5 is continuously moved horizontally in the opposite direction B until it passes the sensing point P of the sensor 41 in the measuring device 4 . After the motion control device 42 receives the coordinates C1 and C2 of the sensing point P when the sensor 41 is triggered, the motion control device 42 calculates the difference (distance) between the coordinates C1 and C2 of the sensing point P and uses it as a milling The measured tool diameter of the cutter 5 is calculated, and the difference between the measured tool diameter of the milling cutter 5 and its real tool diameter is calculated as the correction value of the tool diameter measurement and correction system 1 .

That is, when the measuring device 4 obtains the measured tool diameter of another milling cutter 5 , the measuring device 4 can add the measured tool diameter of the other milling tool 5 and the correction value to obtain the measured tool diameter of the other milling tool 5 . True tool diameter. The steps for the measuring device 4 to obtain the measured tool radius of the other milling cutter 5 are the same as steps S1-S11 in the tool radius measurement and correction method performed by the present invention, so they will not be repeated.

To sum up, because the present invention adopts the tool diameter measurement and correction method, the error value of the tool diameter measurement instrument/device can be obtained as the correction value. In this way, the error of the tool diameter measuring instrument/device is compensated, and the real tool diameter of the tool is obtained more accurately, so as to improve the measurement accuracy of the tool diameter measuring instrument/device. In addition, because the present invention uses a sensor to measure the cutter diameter of the milling cutter, the volume and cost of the instruments/devices for judging the milling cutter diameter are much smaller than those of general visual recognition or shielding the width of the laser. Therefore, the tool diameter measurement and correction system and the method thereof provided by the present invention have the advantages of small size, low cost and high precision.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the appended patent application.

1: Tool diameter measurement and correction system 2: Rotating equipment 3: Displacement equipment 4: Measuring equipment 5: Milling cutter 21: PCB splitter spindle 22: Chuck 31: Servo motor 32: Screw 33: Line rail 41: Sensor 42: Motion Control Device A: Direction B: reverse direction C: rotate C1, C2: coordinates P: Sensing point S1, S3, S5, S7, S9, S11, S13: Steps

1 is a block diagram of a tool radius measurement and correction system provided by an embodiment of the present invention; 2-5 are schematic diagrams of tool diameter measurement and calibration provided by an embodiment of the present invention; and FIG. 6 is a flowchart of a method for measuring and calibrating a tool radius provided by an embodiment of the present invention.

S1, S3, S5, S7, S9, S11, S13: Steps

Claims (10)

A tool diameter measurement and correction method, comprising: A first milling cutter is clamped and rotated through a rotating device; Drive the rotating device to move horizontally in one direction through a displacement device; Through a measuring device, detecting a first coordinate that initially triggers the measuring device when the first milling cutter moves horizontally along the direction; Drive the rotating device to move horizontally along an opposite direction of the direction through the displacement device; Through the measuring device, detecting a second coordinate that initially triggers the measuring device when the first milling cutter moves horizontally along the opposite direction; Calculate the difference between the first coordinate and the second coordinate as a measuring tool radius of the first milling cutter through the measuring device; and Calculate the difference between the measured tool radius of the first milling cutter and a real tool radius through the measuring device as a correction value; Wherein, when the measuring device obtains a measuring tool diameter of a second milling cutter, the measuring device adds the measuring tool diameter of the second milling tool and the correction value to obtain the measuring tool diameter of the second milling tool A real knife diameter. The tool diameter measurement and correction method as claimed in claim 1, wherein the rotating equipment comprises: a PCB splitter spindle; and A chuck is connected to the main shaft of the PCB splitter for clamping and rotating the first milling cutter. The tool diameter measurement and correction method as claimed in claim 2, wherein the displacement device comprises: a servo motor; a screw connecting the servomotor; and A line rail, connecting the screw and the main shaft of the PCB splitter; Wherein, the servo motor drives the screw to rotate to push the line rail, so that the line rail drives the main shaft of the PCB splitter to move horizontally along the direction and the opposite direction. The tool diameter measurement and correction method as claimed in claim 1, wherein the measurement equipment comprises: a sensor for detecting the first coordinate and the second coordinate; and A motion control device is connected to the sensor and used to calculate the measured tool diameter of the first milling cutter, the correction value, and the measured tool diameter of the second milling tool. The tool radius measurement and correction method according to claim 1, wherein obtaining the measured tool radius of the second milling cutter comprises: clamping and rotating the second milling cutter through the rotating device; Drive the rotating device to move horizontally along the direction through the displacement device; through the measuring device, detecting a third coordinate that initially triggers the measuring device when the second milling cutter moves horizontally along the direction; Drive the rotating device to move horizontally along the opposite direction through the displacement device; through the measuring device, detecting a fourth coordinate that initially triggers the measuring device when the second milling cutter moves horizontally in the opposite direction; and Through the measuring device, the difference between the third coordinate and the fourth coordinate is calculated as the measuring tool radius of the second milling cutter. A tool diameter measurement and correction system, comprising: a rotating device for holding and rotating a first milling cutter; a displacement device connected to the rotating device and used to drive the rotating device to move horizontally along a direction and an opposite direction of the direction; and a measuring device, connected to the displacement device, and used to detect when the first milling cutter moves horizontally along the direction to initially trigger a first coordinate of the measuring device, and detect the first milling cutter along the opposite direction A second coordinate that initially triggers the measuring device when moving horizontally, Calculate the difference between the first coordinate and the second coordinate as a measured tool radius of the first milling cutter, and calculate the difference between the measured tool radius and a real tool radius of the first milling tool as a correction value; Wherein, when the measuring device obtains a measuring tool diameter of a second milling cutter, the measuring device adds the measuring tool diameter of the second milling tool and the correction value to obtain the measuring tool diameter of the second milling tool A real knife diameter. The tool diameter measurement and correction system as claimed in claim 6, wherein the rotating equipment comprises: a PCB splitter spindle; and A chuck is connected to the main shaft of the PCB splitter for clamping and rotating the first milling cutter. The tool diameter measurement and correction system as claimed in claim 7, wherein the displacement device comprises: a servo motor; a screw connecting the servomotor; and A line rail, connecting the screw and the main shaft of the PCB splitter; Wherein, the servo motor drives the screw to rotate to push the line rail, so that the line rail drives the main shaft of the PCB splitter to move horizontally along the direction and the opposite direction. The tool diameter measurement and correction system as claimed in claim 6, wherein the measurement equipment comprises: a sensor for detecting the first coordinate and the second coordinate; and A motion control device is connected to the sensor and used to calculate the measured tool diameter of the first milling cutter, the correction value, and the measured tool diameter of the second milling tool. The tool radius measurement and correction system as claimed in claim 6, wherein obtaining the measured tool radius of the second milling cutter comprises: the rotating device clamps and rotates the second milling cutter; The displacement device drives the rotating device to move horizontally along the direction; The measuring device initially triggers a third coordinate of the measuring device when the second milling cutter moves horizontally along the direction; The displacement device drives the rotation device to move horizontally along the opposite direction; The measuring device detects a fourth coordinate that initially triggers the measuring device when the second milling cutter moves horizontally in the opposite direction; and The measuring device calculates the difference between the third coordinate and the fourth coordinate as the measuring tool radius of the second milling cutter.

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