CN111251071A - Micro-milling cutter tool setting detection circuit and micro-milling cutter tool setting method - Google Patents
Micro-milling cutter tool setting detection circuit and micro-milling cutter tool setting method Download PDFInfo
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- CN111251071A CN111251071A CN202010073053.1A CN202010073053A CN111251071A CN 111251071 A CN111251071 A CN 111251071A CN 202010073053 A CN202010073053 A CN 202010073053A CN 111251071 A CN111251071 A CN 111251071A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/004—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
Abstract
The invention discloses a micro milling cutter tool setting detection circuit and a micro milling cutter tool setting method. The micro-milling cutter setting method is established based on a discharge sensing detection circuit, wherein the discharge sensing detection circuit comprises a micro-energy pulse power supply E, a current-limiting resistor R0, a voltage-stabilizing diode VD1, a diode VD2, a voltage-dividing resistor R1, an adjustable voltage-dividing resistor R2 and a capacitor C; the micro-energy pulse power supply E is connected with the current-limiting resistor R0, the micro milling cutter and the workpiece in series, the voltage-stabilizing diode VD1, the diode VD2, the voltage-dividing resistor R1 and the adjustable voltage-dividing resistor R2 are sequentially connected in series and then connected to the two ends of the micro milling cutter and the workpiece in parallel, and the capacitor C is connected with the adjustable voltage-dividing resistor R2 in parallel. The tool setting detection circuit and the tool setting method of the micro milling cutter solve the problem that precise tool setting of the micro milling cutter is difficult to realize in micro milling processing, and improve the tool setting efficiency and the tool setting precision of the micro milling cutter.
Description
Technical Field
The invention belongs to the technical field of micro milling, and particularly relates to a micro milling cutter tool setting detection circuit and a micro milling cutter tool setting method.
Background
Micro-milling is one of the key technologies in the field of micro-machining, is commonly used for local high-precision machining and micro-scale structure machining in high-precision parts, and has unique advantages in the aspect of machining micro parts with three-dimensional complex structures. From the analysis of the processing mechanism, the micro milling processing is to remove the redundant material on the workpiece by the high-speed rotation of the micro milling cutter and the continuous feeding of the main shaft, thereby achieving the purpose of processing the micro appearance characteristics. The precision of micro milling is mainly influenced by factors such as the shape of the micro milling cutter, the feeding amount of each tooth, the rotating speed of a main shaft, the tool setting precision and the like. Wherein the tool setting precision of the micro milling cutter influences the processing precision of the product to a certain extent. In the preparation stage of micro-milling, firstly, the position of a workpiece coordinate system in a machine tool coordinate system needs to be accurately positioned; in addition, when the micro milling cutter is worn or damaged, so that the set micro features cannot be machined at one time, the micro milling cutter needs to be prepared again, and then the cutter needs to be positioned again to complete the micro feature compensation machining. In the processes, the positioning precision of the tool setting and the repeated positioning precision directly influence the subsequent processing precision. The current common tool setting methods include a laser automatic tool setting method, a trial cutting tool setting method, a visual tool setting method, a dial gauge tool setting method and the like. The laser diffraction tool setting is a method for measuring the tool setting clearance by detecting the peak point distance of a laser diffraction fringe, but when the tool setting is carried out by laser diffraction, due to the existence of environmental noise, the tool setting in the second and later stages greatly contains large noise. The measurement accuracy is also influenced by factors such as the structure adjustment process, the performance of key devices, image processing and the like. The trial cutting method is simple, but leaves marks on a workpiece, the tool setting precision is low, and some parts are not suitable for the trial cutting method due to special limitation. The visual tool setting method is a very rough tool setting method, has low precision, is easy to crash the micro milling cutter, is suitable for parts without reference edges or with large blank allowance, and is not suitable for precise tool setting in micro milling. The tool setting precision of the tool setting method by adopting the dial indicator is influenced by the precision of the dial indicator, and the tool setting process is complicated.
Aiming at the problems of the micro milling cutter adopting the conventional tool setting method, the development of the micro milling cutter tool setting method based on the micro-energy discharge precise automatic sensing technology is urgently needed.
Disclosure of Invention
In view of this, the invention provides a tool setting detection circuit for a micro milling cutter, which can realize accurate tool setting.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tool setting detection circuit for a micro milling cutter comprises a power supply E, a current-limiting resistor R0, a diode VD2, a voltage-dividing resistor R1 and an adjustable voltage-dividing resistor R2 which are sequentially connected in series, wherein the anode of the diode VD2 is connected with the current-limiting resistor R0, and the cathode of the diode VD2 is connected with the voltage-dividing resistor R1; and the capacitor C is connected in parallel with two ends of the adjustable voltage dividing resistor R2.
The power supply E is a pulse power supply.
The detection circuit also comprises a voltage stabilizing diode VD 1.
The negative electrode of the voltage stabilizing diode VD1 is connected with the current limiting resistor R0, and the positive electrode of the voltage stabilizing diode VD1 is connected with the positive electrode of the diode VD 2.
The invention adopts the detection circuit with the discharge sensing function to acquire the voltage values at two ends of the adjustable resistor, namely the gap average voltage value, record each coordinate value of the detected workpiece in real time, and realize the positioning of the workpiece and the accurate tool setting of the micro milling cutter by calculating the tool setting position.
The invention provides a tool setting method of a micro milling cutter, which can realize accurate tool setting.
In order to achieve the purpose, the invention adopts the following technical scheme:
a micro milling cutter tool setting method based on the micro milling cutter tool setting detection circuit comprises the following steps:
a. controlling a moving shaft provided with the micro milling cutter by a machine tool control system, enabling the micro milling cutter to be positioned above a workpiece, and randomly selecting four points on the upper surface of the workpiece;
b. and (3) discharge sensing: controlling the micro milling cutter to approach the workpiece, and when the distance between the micro milling cutter and the workpiece reaches a discharge gap in a spark discharge state, detecting the voltage at two ends of an adjustable divider resistor R2 as the input of a machine tool control system, outputting a control signal by the machine tool control system, and controlling a moving shaft to stop feeding;
c. recording four point coordinate values Z1, Z2, Z3 and Z4 of the upper surface of the workpiece when the motion axis is stopped;
d. when Z1 is Z2 is Z3 is Z4, the motion axis is controlled for a plurality of times, the micro milling cutter is sequentially positioned at the left side, the right side, the rear side and the front side of the workpiece, the step (b) is repeated, and coordinate values of the left side, the right side, the rear side and the front side of the workpiece when the motion axis stops are recorded, namely X1, X2, Y1 and Y2;
e. when the Z1, the Z2, the Z3 and the Z4 are not equal, adjusting the three-dimensional space attitude of the workpiece through an adjusting screw on the workpiece clamp, repeating the steps (a) and (b) for multiple times of measurement until the Z1 is equal to Z2 or equal to Z3 or equal to Z4, and repeating the step (d);
f. calculating X, Y coordinate value of the origin of the workpiece coordinate system in the machine tool coordinate system;
g. and retracting the micro milling cutter to return.
The cutter setting method of the micro milling cutter comprises the steps that the micro milling cutter is connected to one end, away from a micro-energy pulse power supply E, of a current limiting resistor R0, and a workpiece is connected to the other end of the micro-energy pulse power supply E.
In the step (f), the coordinate value X, Y of the origin of the workpiece coordinate system in the machine tool coordinate system is: x ═ X1+ X2)/2; y ═ Y1+ Y2)/2.
The control process of the machine tool control system for controlling the motion axis is divided into three processes of fast forward, slow forward and fast backward, and the three processes respectively correspond to three modes of coarse tool setting, fine tool setting and backward setting of the micro milling cutter.
And (b) adopting a fine tool setting mode.
According to the invention, a proper resistor R1, a proper capacitor C and a proper adjustable resistor parameter R2 are selected, voltage values at two ends of the adjustable resistor, namely a gap average voltage value, are collected in the discharge sensing process, coordinate values of a workpiece to be detected are recorded in real time, and the tool setting position is calculated, so that the workpiece positioning and the accurate tool setting of the micro milling cutter are realized, and the tool setting efficiency and the tool setting accuracy of the micro milling are improved.
Drawings
FIG. 1 is a schematic diagram of a discharge sensing detection circuit used in the tool setting method of the micro milling cutter of the present invention;
FIG. 2 is a schematic view of the micro milling cutter in the Z-axis direction in the micro milling cutter tool setting method of the invention;
fig. 3 is a schematic diagram of the XOY plane tool setting of the micro milling cutter in the tool setting method of the micro milling cutter of the invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The following examples are intended to illustrate the invention, but not to limit it. Various changes, substitutions and alterations can be made herein by those skilled in the relevant art without departing from the spirit and scope of the invention, and it is intended that all such equivalent arrangements fall within the scope of the invention.
As shown in fig. 1, the detection circuit for tool setting of a micro milling cutter comprises a power supply E, a current limiting resistor R0, a diode VD2, a voltage dividing resistor R1 and an adjustable voltage dividing resistor R2 which are sequentially connected in series, wherein the anode of the diode VD2 is connected with the current limiting resistor R0, and the cathode of the diode VD2 is connected with the voltage dividing resistor R1; and the capacitor C is connected in parallel with two ends of the adjustable voltage dividing resistor R2.
The diode VD2, the divider resistor R1 and the adjustable divider resistor R2 are sequentially connected in series and then connected in parallel at two ends of the micro milling cutter and a workpiece, and the capacitor C is connected in parallel with the adjustable divider resistor R2; the diode VD2 is in one-way conduction from the voltage stabilizing diode VD1 to the voltage dividing resistor R1, and the capacitor C is prevented from being rapidly discharged through the resistor R1. The adjustable resistor is used for extracting the voltage signal to output, and the voltage of the output end of the detection circuit is adjusted to meet the input end requirement of the acquisition module of the machine tool control system.
The invention adopts the detection circuit with the discharge sensing function to acquire the voltage values at two ends of the adjustable resistor, namely the gap average voltage value, record each coordinate value of the detected workpiece in real time, and realize the positioning of the workpiece and the accurate tool setting of the micro milling cutter by calculating the tool setting position.
In a preferred embodiment, the power source E is selected to be a pulsed power source.
The detection circuit also comprises a voltage stabilizing diode VD 1.
The negative electrode of the voltage stabilizing diode VD1 is connected with the current limiting resistor R0, and the positive electrode of the voltage stabilizing diode VD1 is connected with the positive electrode of the diode VD2 so as to prevent short circuit pulses or stable arc discharge pulses from passing through.
The invention also provides a micro milling cutter tool setting method based on the micro milling cutter tool setting detection circuit, in the method, the micro milling cutter is connected to one end of the current limiting resistor R0 far away from the micro energy pulse power supply E, the workpiece is connected to the other end of the micro energy pulse power supply E, and the micro milling cutter tool setting method comprises the following steps:
a. the machine tool control system controls the movement shaft provided with the micro milling cutter to enable the micro milling cutter to be positioned above the workpiece, and four points (shown in figure 2) on the upper surface of the workpiece are randomly selected to perform multi-point sensing test on the upper surface of the workpiece, so that the horizontal posture of the workpiece is adjusted.
b. And (3) discharge sensing: and controlling the micro milling cutter to approach the workpiece, and when the distance between the micro milling cutter and the workpiece reaches a discharge gap in a spark discharge state, namely the gap between the micro milling cutter and the workpiece is smaller than the discharge gap, discharging occurs, and the voltage of the gap changes. By detecting the voltage at two ends of the adjustable voltage dividing resistor R2 as the input of the machine tool control system, the machine tool control system outputs a control signal and controls the motion shaft to stop feeding. The gap voltage is divided into a plurality of sections according to machining experience and test results, then a threshold comparison method is utilized, a control system obtains a plurality of corresponding machining states such as gap open circuit, discharge or short circuit, and the like, and a machine tool control system outputs a control signal to control the feeding condition of a moving shaft. The invention can effectively detect the gap discharge state and ensure the perception precision.
c. Recording four point coordinate values Z1, Z2, Z3 and Z4 of the upper surface of the workpiece when the motion axis is stopped;
d. when the Z1 is Z2 is Z3 is Z4, the motion axis is controlled for a plurality of times, the micro milling cutter is positioned on the left side, the right side, the rear side and the front side of the workpiece in sequence (as shown in fig. 3), the step (b) is repeated, and the coordinate values of the left side, the right side, the rear side and the front side of the workpiece when the motion axis stops are recorded, namely X1, X2, Y1 and Y2; in the discharging sensing process, the voltage of the gap changes, the detected loop captures a change signal, the signal is fed back to a machine tool controller, corresponding coordinate values of different points of the detected workpiece are recorded in real time, and the tool setting position is calculated, so that the detected workpiece is positioned.
e. When Z1, Z2, Z3 and Z4 are not equal, the upper surface of the workpiece is not parallel to the XOY plane of the machine tool coordinate system, the three-dimensional space posture of the workpiece is adjusted through an adjusting screw on the workpiece clamp, the steps (a) and (b) are repeated for multiple times of measurement until the upper surface of the workpiece is leveled when Z1 is equal to Z2, Z3 is equal to Z4, and the step (d) is repeated;
f. a coordinate value X, Y of the origin of the workpiece coordinate system in the machine coordinate system is calculated.
In the step (f), the coordinate value X, Y of the origin of the workpiece coordinate system in the machine tool coordinate system is: x ═ X1+ X2)/2; y ═ (Y1+ Y2)/2;
g. and retracting the micro milling cutter to return.
The invention selects a proper resistor R1, a proper capacitor C and a proper adjustable resistor parameter R2, collects voltage values at two ends of the adjustable resistor, namely a gap average voltage value, records coordinate values of a detected workpiece in real time, and realizes workpiece positioning and accurate tool setting of the micro milling cutter by calculating the tool setting position.
The invention can repeat each step in the micro milling cutter tool setting method, carries out secondary tool setting, calculates to obtain another set of coordinate values X 'and Y' of the workpiece coordinate system origin in the machine tool coordinate system, thereby verifying the tool setting precision of the invention by comparing the errors of the two sets of coordinate values (X, Y), (X ', Y').
In another preferred embodiment, the control process of the machine tool control system for controlling the motion axis is divided into three processes of fast forward, slow forward and fast backward, which respectively correspond to three modes of rough tool setting, fine tool setting and backward setting of the micro milling cutter.
When the micro milling cutter is far away from the workpiece, the gap is in an open circuit state, the machine tool control system adopts a coarse tool setting mode, namely a fast forward process, and a visual observation system is used for monitoring the tool setting process;
when the micro milling cutter is close to the workpiece, the coarse cutter feeding is stopped, the fine cutter feeding mode is started, namely the slow-feeding process, the feeding speed of the fine cutter is low, and the fine sensing function is turned on in the process that the micro milling cutter slowly approaches the workpiece, namely the discharging sensing. The discharge sensing process is as follows: starting a loop gap average voltage monitoring and detecting system, selecting proper resistance, capacitance and adjustable resistance parameters, and obtaining a gap average voltage value on the capacitance; when the micro milling cutter and the workpiece are in short circuit, the capacitor C enables the voltage to drop rapidly because no charging current is supplemented, and a signal that the discharging gap tends to be in short circuit is output as soon as possible; when the discharge state detection circuit detects a discharge signal, a control signal is output and used as the input of a motion control system to control a motion shaft to stop feeding; according to the current coordinate value recorded by the control system, adjusting the upper surface of the workpiece to be parallel to the XOY plane of the machine tool coordinate system (namely, realizing the adjustment of the horizontal posture of the workpiece in the step a), and subsequently calculating the position of the origin of the workpiece coordinate system in the machine tool coordinate system (namely, the step f);
and after the coordinate value recording is finished, namely the fine tool setting is finished, starting a backspacing mode, namely the micro milling cutter is quickly backspaced.
And (b) adopting a fine tool setting mode.
Example 1
The detection circuit of the embodiment selects the frequency of the micro-energy pulse power supply E: 50KHz, duty ratio 1:3, amplitude: 40V, a current limiting resistor R0 is 2K omega, a voltage stabilizing diode VD1 model IN4751, a diode VD2 model MBR1045, a voltage dividing resistor R1 is 10K omega, the resistance of an adjustable voltage dividing resistor R2 is 0-5K omega, the selected resistance is 2.5K omega, and the model of a capacitor C is 0.1 uF/100V;
the working process of the tool setting method of the micro milling cutter in the embodiment is as follows:
1) connecting the micro milling cutter to one end of a current-limiting resistor R0 far away from a micro-energy pulse power supply E, and connecting a workpiece to the other end of the micro-energy pulse power supply E;
2) controlling a moving shaft provided with the micro milling cutter by a machine tool control system, enabling the micro milling cutter to be positioned above a workpiece, and randomly selecting four points on the upper surface of the workpiece;
3) and (3) discharge sensing: controlling the micro milling cutter to slowly approach towards the workpiece, when the distance between the micro milling cutter and the workpiece reaches a discharge gap in a spark discharge state and the voltage at two ends of an adjustable divider resistor R2 is detected to be less than 2V, outputting the signal to a control system as the input of a machine tool control system, and controlling a moving shaft to stop feeding by the machine tool control system;
4) adjusting the three-dimensional space attitude of the workpiece, measuring for multiple times, and recording coordinate values of four points on the upper surface of the workpiece when the motion axis stops until Z1 is Z2 is Z3 is Z4 is-53.8080 mm, and recording coordinate values of the left side, the right side, the back side and the front side of the workpiece when the motion axis stops, wherein X1 is 50.3296mm, X2 is 35.2402mm, Y1 is-20.9039 mm and Y2 is-10.7055 mm respectively; f. and calculating the coordinate value X of the origin of the workpiece coordinate system to be 42.7849mm and Y to be 15.8047mm in the machine tool coordinate system.
And repeating the steps 2-4 in the micro milling cutter tool setting method, and calculating to obtain coordinate values X '═ 42.7847mm and Y' ═ 15.8047mm of the workpiece coordinate system origin in the machine tool coordinate system.
The calculation repetition precision is as follows: Δ X is 0.0002mm, and Δ Y is 0.0000 mm.
The embodiment shows that the micro-energy discharge perception accurate tool setting technology of the micro-milling cutter is applied to the machine tool discharge state detection device, and finally the following effects can be realized: the error of sensing a plurality of points repeatedly twice can be controlled within 0.0005 mm. The micro-energy discharge sensing accurate tool setting technology of the micro-milling cutter can achieve high discharge sensing precision, and can quickly obtain the position of the origin of the workpiece coordinate system in the machine tool coordinate system.
Claims (9)
1. The tool setting detection circuit for the micro milling cutter is characterized by comprising a power supply E, a current-limiting resistor R0, a diode VD2, a voltage-dividing resistor R1 and an adjustable voltage-dividing resistor R2 which are sequentially connected in series, wherein the anode of the diode VD2 is connected with the current-limiting resistor R0, and the cathode of the diode VD2 is connected with the voltage-dividing resistor R1; and the capacitor C is connected in parallel with two ends of the adjustable voltage dividing resistor R2.
2. The tool setting detection circuit of a micro-milling cutter as claimed in claim 1, wherein the power source E is a pulse power source.
3. The tool setting detection circuit for the micro-milling cutter as claimed in claim 1, wherein the detection circuit further comprises a zener diode VD 1.
4. The tool setting detection circuit of a micro milling cutter as claimed in claim 3, wherein the cathode of the voltage stabilizing diode VD1 is connected with a current limiting resistor R0, and the anode of the voltage stabilizing diode VD1 is connected with the anode of a diode VD 2.
5. A micro milling cutter setting method based on the micro milling cutter setting detection circuit of any one of claims 1 to 4, characterized in that the micro milling cutter setting method comprises the following steps:
a. controlling a moving shaft provided with the micro milling cutter by a machine tool control system, enabling the micro milling cutter to be positioned above a workpiece, and randomly selecting four points on the upper surface of the workpiece;
b. and (3) discharge sensing: controlling the micro milling cutter to approach the workpiece, and when the distance between the micro milling cutter and the workpiece reaches a discharge gap in a spark discharge state, detecting the voltage at two ends of an adjustable divider resistor R2 as the input of a machine tool control system, outputting a control signal by the machine tool control system, and controlling a moving shaft to stop feeding;
c. recording four point coordinate values Z1, Z2, Z3 and Z4 of the upper surface of the workpiece when the motion axis is stopped;
d. when Z1 is Z2 is Z3 is Z4, the motion axis is controlled for a plurality of times, the micro milling cutter is sequentially positioned at the left side, the right side, the rear side and the front side of the workpiece, the step (b) is repeated, and coordinate values of the left side, the right side, the rear side and the front side of the workpiece when the motion axis stops are recorded, namely X1, X2, Y1 and Y2;
e. when the Z1, the Z2, the Z3 and the Z4 are not equal, adjusting the three-dimensional space attitude of the workpiece through an adjusting screw on the workpiece clamp, repeating the steps (a) and (b) for multiple times of measurement until the Z1 is equal to Z2 or equal to Z3 or equal to Z4, and repeating the step (d);
f. calculating X, Y coordinate value of the origin of the workpiece coordinate system in the machine tool coordinate system;
g. and retracting the micro milling cutter to return.
6. The tool setting method for the micro milling tool as claimed in claim 5, wherein the tool setting method comprises the following steps: the cutter setting method of the micro milling cutter comprises the steps that the micro milling cutter is connected to one end, away from a micro-energy pulse power supply E, of a current limiting resistor R0, and a workpiece is connected to the other end of the micro-energy pulse power supply E.
7. The tool setting method for the micro milling tool as claimed in claim 5, wherein the tool setting method comprises the following steps: in the step (f), the coordinate value X, Y of the origin of the workpiece coordinate system in the machine tool coordinate system is:
X＝(X1+X2)/2；Y＝(Y1+Y2)/2。
8. the tool setting method for the micro milling tool as claimed in claim 5, wherein the tool setting method comprises the following steps: the control process of the machine tool control system for controlling the motion axis is divided into three processes of fast forward, slow forward and fast backward, and the three processes respectively correspond to three modes of coarse tool setting, fine tool setting and backward setting of the micro milling cutter.
9. The tool setting method for the micro milling tool as claimed in claim 5, wherein the tool setting method comprises the following steps: and (b) adopting a fine tool setting mode.
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| US4786220A (en) * | 1984-06-18 | 1988-11-22 | Borg-Warner Corporation | Cutting tool wear monitor |
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| JP2000079537A (en) * | 1998-09-01 | 2000-03-21 | Nippei Toyama Corp | Closely adhering condition detector device for tool holder |
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| CN203003605U (en) * | 2013-01-04 | 2013-06-19 | 上海煜鹏通讯电子有限公司 | Device for realizing automatic centring operation |
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| CN109531262A (en) * | 2018-11-15 | 2019-03-29 | 深圳创源航天科技有限公司 | Numerically-controlled machine tool haptic feedback formula method for automatic measurement, system and storage medium |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786220A (en) * | 1984-06-18 | 1988-11-22 | Borg-Warner Corporation | Cutting tool wear monitor |
| DE4027767A1 (en) * | 1990-09-01 | 1992-03-12 | Vdo Schindling | Electric setting drive with reproducible end positions - uses two end switches for reversing rotation of DC drive motor |
| JP2000079537A (en) * | 1998-09-01 | 2000-03-21 | Nippei Toyama Corp | Closely adhering condition detector device for tool holder |
| CN2625105Y (en) * | 2003-07-04 | 2004-07-14 | 河北科技大学 | Multifunctional on-machine tool setting device |
| CN2820432Y (en) * | 2005-06-20 | 2006-09-27 | 杭州神雕数控科技有限公司 | Automatic tool setting and automatic dividing device |
| CN203003605U (en) * | 2013-01-04 | 2013-06-19 | 上海煜鹏通讯电子有限公司 | Device for realizing automatic centring operation |
| CN109304640A (en) * | 2018-11-15 | 2019-02-05 | 深圳创源航天科技有限公司 | A kind of haptic feedback formula measuring device and numerically-controlled machine tool |
| CN109531262A (en) * | 2018-11-15 | 2019-03-29 | 深圳创源航天科技有限公司 | Numerically-controlled machine tool haptic feedback formula method for automatic measurement, system and storage medium |
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Application publication date: 20200609 |