TWM544382U - Via detection device of electrical discharging machining - Google Patents

Description

Through hole detecting device for electric discharge machining

The present invention relates to the field of electrical discharge machining, and more particularly to a through-hole detecting device capable of automatically detecting electrical discharge machining.

According to the conventional method, when the electric discharge machine is used as the workpiece through hole, the operator must observe the water spray condition of the through hole to judge whether the through hole processing has ended, and the manual hole must be manually processed after the processing. Turn the handwheel to move the machine before machining the consistent hole.

At present, most of the computer numerical control (CNC) electric discharge machines are inputting the depth of the hole to be processed and the compensation value of the electrode consumption, and then performing through-hole processing. If the electrode eccentricity, insufficient or unstable water pressure, and poor water quality occur during processing, This can lead to unstable discharge conditions, which can lead to accelerated electrode consumption and reduced processing speed. Or when the electrode is through the hole, there will be a bad discharge, which may cause the upper and lower apertures to be inconsistent.

In addition, it is known that the position of the through hole can be predicted by predicting the consumption. However, if the thickness of the material is not uniform, the exact position of the perforated hole and the exact position of the through hole cannot be predicted, and if the workpiece is a two-sided structure, the distance between the two sides is too large. When the structure is narrow, it is easy to continue to penetrate the other side and cause damage to the workpiece.

Therefore, how to improve the shortcomings of observing the through-holes manually, and improving the shortcomings of using computer numerical control, is to be solved by relevant industry players.

In order to solve the above problems, the present invention provides a through-hole detecting device for electrical discharge machining, which detects a processing signal of a workpiece during electrical discharge machining through a hole, transmits a processing signal to a display controller, and is analyzed and judged by a display controller. Whether it has penetrated the workpiece, if it has penetrated the workpiece, it will send a through signal, thereby using a fully automated method to detect whether it has penetrated the workpiece, improving the shortcomings of conventional manual or computer numerical control, reducing waste of human resources, and improving the through hole. The accuracy of the workpiece.

An embodiment of the present invention provides a through hole detecting device for electric discharge machining, which operates on an electric discharge machine, and the through hole detecting device for electric discharge machining comprises: an inductor disposed on the electric discharge machine, and the sensor detects Measuring the workpiece in the through hole electrical discharge machining process and transmitting the processing signal; and a display controller coupled to the sensor signal, the display controller having a communication unit, an analysis unit and a display unit, a communication unit, The analysis unit and the display unit are connected to each other, the communication unit receives the processing signal, the analysis unit analyzes the processing signal, and determines whether the processing signal has penetrated the workpiece. If the workpiece has passed through the workpiece, a through signal is generated, and the display unit displays the processing signal and the through signal.

Preferably, the processing signal changes according to the through hole machining time of the workpiece, and the processing signal forms a consistent hole variation curve by the analyzing unit and is displayed on the display unit. The through hole change curve has a first change point, a second change point and a third change point, the time of the first change point is smaller than the second change point, and the time of the second change point is smaller than the third change point, the first change The value of the point is smaller than the value of the second change point, and the value of the third change point is smaller than the value of the second change point. Wherein, the first change point is not through the workpiece, the second change point is through the signal, and the third change point is after the workpiece.

Preferably, the display controller has a memory unit that stores the through-hole variation curve.

Preferably, the processing signal has a voltage change signal, a water pressure change signal and a feed rate change signal, and the voltage change signal, the water pressure change signal and the feed rate change signal are respectively displayed on the display unit.

Preferably, the inductor comprises a voltage sensor, the voltage sensor is disposed in the processing power supply of the electric discharge machine, and the voltage sensor is configured to detect the voltage change signal.

Preferably, the inductor comprises a water pressure sensor, the water pressure sensor is arranged in the electrolytic cell, and the water pressure sensor is used for detecting the water pressure change signal.

Preferably, the sensor comprises a speed sensor, the speed sensor is arranged in the electric discharge machining feed mechanism, and the speed sensor is used for detecting the feed rate change signal.

By the above, the creation can achieve the effect. In the through hole electrical discharge machining, the through hole variation curve formed by the voltage change signal, the water pressure change signal or the feed rate change signal can be judged to determine whether the workpiece has a through hole. When the second change point appears, it indicates that the through-process has been penetrated, and the through-signal is displayed, thereby detecting whether the workpiece has a through-hole in a completely automated manner, reducing waste of human resources, and avoiding problems of over-machining or incomplete processing. , in turn, increase the accuracy and accuracy of the workpiece.

In addition, the memory unit can store the through-hole variation curve, and can record the parameter values of the required voltage, water pressure or feed speed when the workpiece is subjected to the through-hole electrical discharge machining, and the memory unit can generate the corresponding workpiece of the same type. The hole variation curve is stored so that subsequent workpieces of the same model can be processed with the corresponding parameter values, thereby forming a modular setting, reducing the difference of the processing parameter setting, and causing the problem of workpiece damage to improve the processing accuracy. And reduce the set time of processing parameter adjustment to improve processing efficiency.

Furthermore, when the workpiece has a two-sided structure and the thicknesses are inconsistent, the depth of the through hole on the workpiece is also different. Therefore, the processing signal detected by the sensor can be used to determine the current through hole depth, and simultaneously display on the display unit. Through-hole variation curve, the through-hole curve shows the position of the through-hole and the distance of advancement, so as to facilitate the machining accuracy, avoid excessive machining of the workpiece, and cause damage to the workpiece, and the position of the through-hole can be set by the memory unit to facilitate subsequent The workpiece of the same type is processed with the corresponding parameter value, thereby avoiding over-machining and causing damage to the other surface structure of the workpiece, so as to shorten and simplify the processing procedure and time to improve the processing efficiency.

For the convenience of the description, the central idea expressed in the column of the above novel content is expressed by a specific embodiment. The various items in the examples are drawn to scale in the description and not to the actual elements, and are described in the foregoing.

Referring to FIG. 1 to FIG. 4, the present invention provides a through hole detecting device 100 for electrical discharge machining, which operates on an electric discharge machine 1 which includes a processing power source 2, an electrolytic cell 3, and an electric discharge machining feed. The mechanism 4, wherein the processing power source 2 is used to supply the electric power of the electric discharge machine 1, and the processing power source 2 has positive and negative electric powers of opposite electrical properties, and the positive electric power is electrically connected to the workpiece 5, and the negative electric power and electric discharge machining feed mechanism 4 The electrolytic cell 3 is used to install the electrolyte 6 , and the workpiece 5 is disposed in the electrolytic cell 3 and immersed in the electrolyte 6 ; the electric discharge machining feed mechanism 4 is used to drive the tool electrode 7 to act on the workpiece 5 The through hole is electrically processed to form a hole 8 in the workpiece 5. The through hole detecting device 100 for electric discharge machining comprises:

An inductor 10 is disposed in the electric discharge machine 1, and the sensor 10 detects a processing signal of the workpiece 5 during the electric discharge machining of the through hole, and can transmit a processing signal. In the present creation, the processing signal will follow the workpiece 5 The hole discharge processing time changes, and the processing signal has a voltage change signal, a water pressure change signal, and a feed rate change signal. Furthermore, the sensor 10 includes a voltage sensor 11, a water pressure sensor 12 and a speed sensor 13, wherein the voltage sensor 11 is disposed and electrically connected to the processing power source 2 of the electric discharge machine 1, and the voltage sense The detector 11 is configured to detect a voltage change of the processing power source 2 during the through hole electrical discharge machining, and the corresponding processing signal is a voltage change signal; the water pressure sensor 12 is disposed in the electrolytic cell 3, and the water pressure sensor 12 is configured to detect When the through hole electric discharge machining is performed, the water pressure of the electrolyte 6 changes, and the corresponding processing signal is a water pressure change signal; the speed sensor 13 is disposed in the electric discharge machining feed mechanism 4, and the speed sensor 13 is used for detecting During the hole discharge machining, the speed at which the tool electrode 7 attacks toward the through hole of the workpiece 5 changes, and the corresponding processing signal is the feed rate change signal.

A display controller 20 is coupled to the sensor 10, and the display controller 20 has a communication unit 21, an analysis unit 22, and a display unit 23. The communication unit 21, the analysis unit 22, and the display unit 23 are connected to each other. The communication unit 21 receives the processing signal transmitted by the sensor 10, and the analyzing unit 22 analyzes the processing signal and determines whether the processing signal has penetrated the workpiece 5. If the workpiece 5 has been penetrated, the hole 8 is formed on the workpiece 5 to emit a through signal. The display unit 23 is configured to display the processing signal and the through signal. During the through hole electrical discharge machining, the sensor 10 continuously transmits the processing signal to the communication unit 21, and the communication unit 21 transmits the continuously received processing signal to the analyzing unit 22, and the analyzing unit 22 forms the processing signal into the consistent hole variation curve 30, and Displayed on the display unit 23, wherein the through hole variation curve 30 is graphically presented on the display unit 23, the corresponding horizontal axis represents time, and the vertical axis represents workpiece depth, through hole position point, tool electrode 7 forward distance, voltage At least one of a value, a water pressure value, or a speed value. In the present creation, the display unit 23 is a screen.

Moreover, the through-hole variation curve 30 has a first change point 31, a second change point 32, and a third change point 33. The time of the first change point 31 is smaller than the second change point 32, and the second change point 32 The time is smaller than the third change point 33, the value of the first change point 31 is smaller than the value of the second change point 32, and the value of the third change point 33 is smaller than the value of the second change point 32. In the present creation, the first change point 31 The value, the value of the second change point 32, and the value of the third change point 33 correspond to different parameter values, workpiece depth, and through-hole detected by the voltage sensor 11, the water pressure sensor 12, and the speed sensor 13. The position point or the tool electrode 7 is at least one of the forward distances, wherein the first change point 31 is not through the workpiece 5, the second change point 32 is through the signal, and the third change point 33 is through the workpiece 5.

In addition, in the present invention, the voltage change signal, the water pressure change signal, and the feed rate change signal are respectively displayed on the display unit 23, and the corresponding through hole variation curve 30 is formed via the analysis unit 22, thereby, as shown in FIG. As shown in FIG. 4, if the thickness of the workpiece 5 is thin or has a two-sided structure and the thickness of the workpiece 5 is inconsistent, the through-hole variation curve 30 corresponding to the voltage change signal, the water pressure change signal or the feed rate change signal can be transmitted. It is judged whether the workpiece 5 has a through hole. When the second change point 32 appears, it indicates that the workpiece 5 has been penetrated, that is, the hole 8 is formed on the workpiece 5, and the through signal is displayed, and the attacking tool electrode 7 can be returned to the next machining program. Therefore, it is possible to detect whether the workpiece 5 has a through hole in a completely automatic manner, thereby avoiding the problem of over-machining or incomplete processing, and improving the accuracy and accuracy of the workpiece 5.

In addition, the display controller 20 has a memory unit 24, and the memory unit 24 can store the through-hole variation curve 30, which can record the parameter values of the required voltage, water pressure or feed rate when the workpiece 5 is electrically processed in the through-hole. When the workpiece 5 of the same type is to be subjected to the through hole electric discharge machining, after one of the workpieces 5 has completed the through hole electric discharge machining, the memory unit 24 stores the through hole variation curve 30 corresponding to the workpiece 5 of the model number. Therefore, the workpiece 5 of the same model is processed in the corresponding parameter value, thereby reducing the problem that the workpiece 5 is damaged due to the difference of the voltage, the water pressure or the feed speed of the tool electrode 7 to improve the processing precision. And forming a modular setting, reducing the set time of the processing parameter adjustment, and improving the processing efficiency.

Furthermore, referring to FIG. 1 to FIG. 4, when the workpiece 5 has a two-sided structure and the distance between the two surfaces is narrow, and the thickness of the workpiece 5 is inconsistent and only needs to penetrate through one of the structures, the through-hole variation curve 30 is used to determine whether the workpiece 5 has been The through hole, when the second change point 32 appears, indicates that one side of the workpiece 5 has been passed through and the hole 8 is formed, and the through signal is displayed, and the attacking tool electrode 7 can be returned to the next processing program while being memorized by memory. The unit 24 stores the position of the through hole of the workpiece 5 so as to process the workpiece 5 of the same type and process the corresponding parameter value, thereby shortening and simplifying the processing procedure and time to improve the processing efficiency.

The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. All kinds of modifications or changes that are not in violation of the spirit of this creation are all in the scope of this creative intention.

1‧‧‧Electric discharge machine
2‧‧‧Processing power supply
3‧‧‧ Electrolytic cell
4‧‧‧Electrical processing feed mechanism
5‧‧‧Workpiece
6‧‧‧ electrolyte
7‧‧‧Tool electrode
8‧‧‧ holes
100‧‧‧through hole detection device
10‧‧‧ sensor
11‧‧‧Voltage sensor
12‧‧‧Water pressure sensor
13‧‧‧Speed sensor
20‧‧‧ display controller
21‧‧‧Communication unit
22‧‧‧Analysis unit
23‧‧‧Display unit
24‧‧‧ memory unit
30‧‧‧through hole curve
31‧‧‧ First change point
32‧‧‧ second change point
33‧‧‧ Third change point

FIG. 1 is a schematic view showing the creation of the through hole detecting device in the electric discharge machine. Figure 2 is a system architecture diagram of the creation. FIG. 3 is a schematic diagram showing the through-hole variation curve of the display unit of the present invention. Figure 4 is a schematic view of the through hole of the workpiece of the present invention, showing that the workpiece has a two-sided structure.

100‧‧‧through hole detection device

10‧‧‧ sensor

11‧‧‧Voltage sensor

12‧‧‧Water pressure sensor

13‧‧‧Speed sensor

20‧‧‧ display controller

21‧‧‧Communication unit

22‧‧‧Analysis unit

23‧‧‧Display unit

24‧‧‧ memory unit

Claims (10)

A through hole detecting device for electric discharge machining, which operates on an electric discharge machine, the through hole detecting device of the electric discharge machining comprising: an inductor disposed on the electric discharge machine, the sensor detecting the workpiece in the through hole a processing signal is transmitted during the electrical discharge machining, and the processing signal is transmitted; and a display controller is coupled to the sensor signal, the display controller having a communication unit, an analysis unit and a display unit, the communication unit, the communication unit The analysis unit and the display unit are connected to each other, and the communication unit receives the processing signal. The analysis unit analyzes the processing signal and determines whether the processing signal has penetrated the workpiece. If the processing unit has passed through the workpiece, a through signal is generated, and the display unit displays The processing signal and the through signal. The through hole detecting device for electrical discharge machining according to claim 1, wherein the processing signal changes according to a through hole electrical discharge machining time of the workpiece, and the processing signal forms a consistent hole variation curve by the analyzing unit, and is displayed on the Display unit. The through hole detecting device of the electric discharge machining according to claim 2, wherein the through hole change curve has a first change point and a second change point, and the time of the first change point is less than the second change point, The value of the first change point is less than the value of the second change point. The through hole detecting device of the electric discharge machining according to claim 3, wherein the processing signal has a third change point, and the time of the second change point is less than the third change point, and the value of the third change point is smaller than The value of the second change point. The through hole detecting device of the electric discharge machining according to claim 4, wherein the first change point is not before the workpiece, and the second change point is the through signal, and the third change point is after the workpiece. The through hole detecting device for electrical discharge machining according to claim 2, wherein the display controller has a memory unit, and the memory unit stores the through hole variation curve. The through hole detecting device of the electric discharge machining according to claim 1 or 2, wherein the processing signal has a voltage change signal, a water pressure change signal, and a feed rate change signal, the voltage change signal, the water pressure The change signal and the feed rate change signal are respectively displayed on the display unit. The through hole detecting device for electric discharge machining according to claim 7, wherein the sensor comprises a voltage sensor, wherein the voltage sensor is disposed in a processing power supply of the electric discharge machine, and the voltage sensor is configured to detect The voltage change signal. The through hole detecting device for electric discharge machining according to claim 7, wherein the sensor comprises a water pressure sensor, wherein the water pressure sensor is disposed in an electrolytic cell, and the water pressure sensor is configured to detect the water pressure change. Signal. The through hole detecting device for electric discharge machining according to claim 7, wherein the sensor comprises a speed sensor, wherein the speed sensor is disposed in an electric discharge machining feed mechanism, and the speed sensor is configured to detect the feed rate. Change signal.