JP3292834B2 - Electrolytic processing method and electrolytic processing apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic processing method and an electrolytic processing method for performing processing by an electrochemical reaction using a processing electrode while rotating a workpiece in an electrolytic solution in the metal industry, the electronic industry, and the like. The present invention relates to an apparatus, and more particularly to an electrolytic processing method and an electrolytic processing apparatus for processing a workpiece whose cross-sectional shape is not uniform with respect to a rotation center.

[0002]

2. Description of the Related Art Conventionally, turning is performed by causing a physical or chemical action between a processing tool and a workpiece while rotating a cylindrical workpiece about a center of a circular bottom surface as a rotation axis. Examples of the processing method include mechanical turning represented by a lathe and the like. The processing electrode is brought close to the processing line of the processing object through a minute gap while rotating the processing object in the electrolytic solution, and the processing electrode and the processing electrode are formed. Electrolytic turning, in which a voltage is applied between the workpieces and machining is performed by utilizing the electrochemical dissolution reaction that occurs at that time, and machining of the machining electrode while rotating the workpiece in an insulating solution There is a method such as electric discharge turning in which a material is brought close to a line via a minute gap, a high voltage is applied between a machining electrode and a workpiece, and machining is performed by utilizing an electric discharge phenomenon generated at that time.

[0003] Among these, in electrolytic turning, since the processing proceeds without contact between the workpiece and the processing electrode, the processing stress is not applied to the workpiece, and the hardness of the workpiece has little effect on the processing accuracy. . In addition, since machining is performed by using a chemical reaction, there is a characteristic in that thermal damage to a work surface due to electric discharge is small as in electric discharge turning.

[0004]

However, in the conventional mechanical turning, when the cross-sectional shape of the workpiece is not symmetrical with respect to the center of rotation, it occurs when the cutting tool comes into contact with the material. Since stress is not uniformly applied to the material, there is a problem that mechanical breakage and the like are likely to occur and processing is extremely difficult. In mechanical turning, cutting is performed by the physical contact between the processing tool and the workpiece, and the workpiece moves at a certain speed with respect to the processing tool during processing. is necessary. For this reason, it is necessary to rotate the workpiece at a high speed, and if the cross-sectional shape is not symmetrical with respect to the center of rotation, there is a problem that the rotating shaft is shaken or vibrated, and the processing accuracy is reduced.

[0005] In conventional electrolytic turning and electric discharge turning, a machining electrode is brought close to a workpiece through a minute gap, and machining is performed while rotating the workpiece with the machining electrode fixed there. Therefore, if the cross-sectional shape of the workpiece is not a perfect circle, the workpiece electrode and the workpiece come into contact with each other, causing damage to the workpiece electrode and the workpiece, and performing normal processing. Problems such as disappearance occur.

Further, when a workpiece having a non-circular cross section on a surface to be processed, for example, when a groove having a uniform depth is carved in a part of a prism, the processing tool is fixed, so that the Due to the rotation, the relative distance between the tool and the surface of the workpiece changes, and it is impossible to use any of the conventional turning methods to make the groove depth constant. is there.

[0007]

Therefore, in the electrolytic machining method of the present invention, the machining electrode is not fixed at the time of machining, but is moved to a predetermined position in synchronization with the rotation of the workpiece.
Processing is performed while controlling the distance between the processing electrode and the processing surface of the workpiece to a desired value. For that purpose, first, the distance from the rotation center of the processing line on the processing surface is measured and stored, and the cross-sectional shape of the processing surface on the processing line is calculated. Therefore, a procedure of performing processing while controlling the distance between the processing electrode and the workpiece is required.

First, as a means for measuring a distance from a rotation center of a processing line on a surface to be processed, the electrolytic processing method of the present invention employs one of the following two methods. The first method is
This is a method utilizing contact between a workpiece and a processing electrode. First, the processing electrode is moved on a line that intersects perpendicularly with the rotation axis of the workpiece, and the position of the processing electrode when it is brought into contact with the processing line on the processing surface is recorded. Next, once the processing electrode is separated from the workpiece, the workpiece is rotated by a certain minute angle, the processing electrode is moved again, and the position of the processing electrode at the time of contact with the workpiece is recorded. I do. This is repeated until the workpiece goes at least once, and the cross-sectional shape of the workpiece is calculated from the collected data.

The second method is a method of detecting a tunnel current flowing between a workpiece and a processing electrode. First, while measuring the tunnel current flowing between the machining electrode and the workpiece, the machining electrode is moved on a line perpendicular to the rotation axis of the workpiece, and the magnitude of the tunnel current is determined by a predetermined value. The position of the machining electrode at the time of is recorded. This operation is repeated until the workpiece makes at least one round, as in the case of using contact, and the cross-sectional shape of the workpiece is calculated.

Next, in order to control the distance between the processing electrode and the workpiece based on the cross-sectional shape of the surface to be processed on the obtained processing line, the processing electrode is not fixed at a fixed position at the time of processing. The structure is set on a mechanism that can move on a line that intersects perpendicularly with the rotation center of the workpiece. Then, the machining is performed while moving the machining electrode to the position of the machining electrode calculated based on the data obtained from the mechanism for detecting the cross-sectional shape of the work surface and the rotation angle of the work.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a case where a method of detecting contact between a workpiece and a processing electrode is used as a method of calculating a cross-sectional shape of a processing surface on a processing line in the electrolytic processing method of the present invention. This is an explanation of the procedure.

First, the workpiece is rotated and returned to the rotation origin. Next, the processing electrode is moved in a direction parallel to the rotation axis of the workpiece so as to be on the processing line of the processing surface. Continued
While measuring the electrical resistance between the processing electrode and the workpiece, the direction perpendicular to the rotation axis of the workpiece until the electrical resistance falls below a predetermined value. Move to When the electric resistance value becomes equal to or less than a predetermined value, the movement of the machining electrode is stopped, and the position of the machining electrode at that time and the current rotation angle of the workpiece are stored. Next, after moving the processing electrode again by a predetermined distance in a direction in which the distance from the workpiece increases, the workpiece is rotated by a predetermined minute angle. The operations of FIGS. 1 (3) to (7) are repeated until the workpiece rotates at least 360 °. Next, based on the stored rotation angle of the workpiece and the position of the processing electrode, the cross-sectional shape of the workpiece on the processing line is calculated, and the rotation angle and the rotation angle of the workpiece when processing into the target processing shape are further performed. Find the machining electrode position.

Subsequently, during processing, a predetermined voltage is applied between the processing electrode and the workpiece while the position of the processing electrode is moved to the previously determined processing electrode position in accordance with the rotation of the workpiece. I do. Then, after a predetermined time has elapsed, the application of the voltage is stopped, and if necessary, the procedure from FIG. 1 (1) to (13) is repeated. In the present embodiment, in the step of changing the relative position between the workpiece and the processing electrode, the method of fixing the workpiece and moving the processing electrode is as follows. It is also possible to use a moving method. As a method of detecting the contact between the processing electrode and the workpiece, in addition to the method of measuring the electric resistance value between the two, the equilibrium potential difference between the two in the electrolytic solution is measured, and this is determined by the contact. A method utilizing the change in the equilibrium potential difference is also conceivable.

(Embodiment 2) FIG. 2 shows a method of calculating a cross-sectional shape of a surface to be processed on a processing line in the electrolytic processing method of the present invention. FIG. 6 illustrates a procedure for using a measurement method. First, the workpiece is rotated and returned to the rotation origin. Next, the processing electrode is moved in a direction parallel to the rotation axis of the workpiece so as to be on the processing line of the processing surface. Subsequently, the potential in the electrolytic solution of the processing electrode and the workpiece is set to a value that does not cause an electrochemical reaction, and while measuring the tunnel current flowing between the two, the tunnel current is equal to or more than a predetermined value. Until the machining electrode is moved, the machining electrode is moved in a direction perpendicular to the rotation axis of the workpiece. When the tunnel current becomes equal to or more than a predetermined fixed value, the movement of the processing electrode is stopped, and the position of the processing electrode at that time, and
The current rotation angle of the workpiece is stored. Next, after moving the processing electrode again by a predetermined distance in a direction in which the distance from the workpiece increases, the workpiece is rotated by a predetermined minute angle. The operations of FIGS. 2 (4) to (8) are repeated until the workpiece rotates at least 360 °. Next, based on the stored rotation angle of the workpiece and the position of the processing electrode, the cross-sectional shape of the workpiece on the processing line is calculated, and the rotation angle and the rotation angle of the workpiece when processing into the target processing shape are further performed. Find the relationship between the processing electrode positions. At the same time, if necessary, the relationship between the rotation angle and the voltage applied to the workpiece-working electrode is also determined.

Subsequently, at the time of machining, the voltage previously obtained is applied between the machining electrode and the workpiece while moving the position of the machining electrode to the previously determined machining electrode position in accordance with the rotation of the workpiece. . Then, after a predetermined time has elapsed, the voltage application is stopped, and if necessary, FIG.
Repeat steps (1) to (14). As in the first embodiment, in the step of changing the relative position between the workpiece and the processing electrode, a method in which the processing electrode is fixed and the workpiece is moved may be used.

(Embodiment 3) FIG. 3 schematically shows an example of an embodiment of the electrolytic processing apparatus of the present invention which specifically executes the procedure described in Embodiment 1. The processing electrode 301 has a rod-like or needle-like shape, and is fixed via a processing electrode support 304 to a processing electrode moving stage 303 that can move parallel and perpendicular to the rotation axis of the workpiece 302. On the other hand, the workpiece 302 is connected via a chuck 305 to a motor 306 for generating a rotational movement. Further, an encoder 307 is provided on the rotation axis of the motor 306, and the angle of the workpiece from the rotation origin can be detected by the origin return signal and the rotation pulse signal from the encoder 307.

On the other hand, the electrolytic solution 308 is held in the processing tank 309, and the processing tank 309 is moved up and down below the processing tank 309 to immerse the processing electrode 301 and the workpiece 302 in the electrolytic solution 308. A processing tank moving stage 310 is provided for removing the battery from the electrolytic solution 308. An electrolyte supply pump 312 for supplying the electrolyte 308 from the electrolyte supply tank 311 to the processing tank 309 and an electrolyte discharge pump 314 for discharging the electrolyte 308 from the processing tank 309 to the electrolyte discharge tank 313. Is also installed.

The working electrode 301 and the workpiece 302 are connected to an electric resistance measuring device 501 and a programmable power supply 315 via a switch 401, and are electrically connected to either of them by switching the switch 401. Workpiece 30
When calculating the cross-sectional shape on the processing line of 2, the processing electrode 301
The workpiece 302 is electrically connected to the electric resistance measuring device 501, and can detect a change in electric resistance due to the contact between the two. During processing, the processing electrode 301 and the workpiece 302
Is connected to the programmable power supply 315 and the electrolyte 3
In 08, it is possible to apply a voltage between the two. The programmable power supply 315 includes a machining electrode 301 and a workpiece 302.
In addition to the function of applying a constant voltage in between, it also has a function of applying a voltage so that the current flowing between the processing electrode 301 and the workpiece 302 is constant, and a function of applying a pulsed voltage.

Processing electrode moving stage 303, motor 306, encoder 307, processing tank moving stage 310, electrolyte supply pump 312, electrolyte discharge pump 314, and programmable power supply
Each of the devices 315 is connected to a control device 316, and all control of the operation is performed by the control device 316. Next, the operation when this electrolytic processing apparatus is used will be described.

First, the electrolyte supply pump 312 is turned on, and an appropriate amount of the electrolyte 308 is put into the processing tank 309. Next, the height of the processing tank 309 is adjusted by the processing tank moving stage 310 so that the processing electrode 301 and the workpiece 302 are immersed in the electrolytic solution 308. As means for calculating the cross-sectional shape of the workpiece 302 on the processing line, first, the motor 306 is rotated until an origin return signal of the encoder 307 is detected. Next, the processing electrode moving stage 303 is moved in a direction parallel to the rotation axis of the workpiece 302 so that the tip of the processing electrode 301 is on the processing line of the workpiece 302. Next, switch 401 is processed electrode 301
And the workpiece 302 are switched so as to be connected to the electrical resistance measuring device 501, and while measuring the electrical resistance between the processing electrode 301 and the workpiece 302, the electrical resistance value is a predetermined constant value. Process electrode moving stage 30
3 moves the processing electrode 301 in a direction perpendicular to the rotation axis of the workpiece 302. When the electric resistance value becomes equal to or less than a predetermined fixed value, the movement of the processing electrode moving stage 303 is stopped, and the position of the processing electrode moving stage 303 at that time and the current rotation angle of the workpiece 302 are controlled. Device 3
Store it in 16. Next, the processing electrode 301 is again attached to the workpiece 302.
Then, the workpiece 302 is rotated by the motor 306 at a predetermined small angle after moving the workpiece 302 by a predetermined distance in a direction in which the distance from the workpiece increases. The angle detection at this time is performed by a rotation pulse signal from an encoder 307 connected to the motor 306. While rotating the workpiece 302, the work of storing the position of the processing electrode moving stage 303 when the tip of the processing electrode 301 contacts the workpiece 302 in the control device 316 is performed by the workpiece 302 at least 360 ° Repeat until rotated. Next, the workpiece 302 stored in the control device 316 is stored.
Based on the rotation angle of the workpiece and the position of the processing electrode moving stage 310, the control device 316 calculates the cross-sectional shape of the workpiece 302 on the processing line, and furthermore, the rotation angle of the workpiece 302 when processing into the target processing shape And machining electrode moving stage 310
Find the position of

Subsequently, at the time of processing, first, the switch 401 is switched so that the processing electrode 301 and the workpiece 302 are connected to the programmable power supply 315. Next, the work piece 302 is continuously or intermittently rotated by the motor 306, and the rotation angle of the work piece is obtained from the origin return signal and the rotation pulse signal of the encoder 307. The processing electrode moving stage 310 is moved to a position corresponding to the rotation angle of the workpiece 302 based on the rotation angle of the A predetermined voltage is applied by the programmable power supply 315. Then, in accordance with the rotation of the workpiece 302, the process of moving the position of the processing electrode moving stage is continued, and after a predetermined time has elapsed, or the workpiece 302 has rotated a predetermined number of revolutions. Thereafter, the application of the voltage and the rotation of the motor 306 are stopped.

If necessary, the process from the step of measuring the cross-sectional shape of the workpiece 302 on the processing line to the process is repeated to process the workpiece 302 into a target processed shape. (Embodiment 4) FIG. 4 schematically shows an example of an embodiment of an electrolytic processing apparatus according to the present invention which specifically executes the procedure described in Embodiment 2.

The processing electrode 301 has a rod-like or needle-like shape and is fixed via a processing electrode support 304 to a processing electrode moving stage 303 that can move parallel and perpendicular to the rotation axis of the workpiece 302. On the other hand, the workpiece 302 is connected via a chuck 305 to a motor 306 for generating a rotational movement. Further, the rotating shaft of the motor 306 has an encoder 3
07 is provided, and the angle of the workpiece from the rotation origin can be detected by the origin return signal and the rotation pulse signal from the encoder 307.

On the other hand, the electrolytic solution 308 is held in the processing tank 309, and the processing tank 309 is moved up and down below the processing tank 309 to immerse the processing electrode 301 and the workpiece 302 in the electrolytic solution 308. A processing tank moving stage 310 is provided for removing the battery from the electrolytic solution 308. An electrolyte supply pump 312 for supplying the electrolyte 308 from the electrolyte supply tank 311 to the processing tank 309 and an electrolyte discharge pump 314 for discharging the electrolyte 308 from the processing tank 309 to the electrolyte discharge tank 313. Is also installed.

The machining electrode 301 and the workpiece 302 are connected to a tunnel current measuring device 402 and a programmable power supply 315 via a switch 401, and are electrically connected to either of them by switching the switch 401. The tunnel current measuring device 402 includes a reference electrode 403 serving as a reference for the potential in the electrolytic solution, and a processing electrode 3 when measuring the tunnel current.
01 and a counter electrode 404 for controlling the potential of the workpiece 302 are connected, and the tunnel current measuring device 402 controls the potential of the processing electrode 301 and the potential of the workpiece 302 to be a predetermined value. A mechanism and a mechanism for measuring a value of a tunnel current flowing between the two are included.

At the time of calculating the cross-sectional shape of the workpiece 302 on the processing line, the switch 401 is switched, and the processing electrode 301 and the workpiece 302 are electrically connected to the tunnel current measuring device 402, and flow when both approach. The tunnel current can be measured. At the time of processing, the processing electrode 301 and the workpiece 302 are connected to a programmable power supply 315, and a voltage can be applied between them in the electrolyte 308. The programmable power supply 315 has the function of applying a constant voltage between the processing electrode 301 and the workpiece 302,
It also has a function of applying a voltage so that the current flowing between the workpiece 302 and the workpiece 302 is constant, and a function of applying a pulsed voltage.

Processing electrode moving stage 303, motor 306, encoder 307, processing tank moving stage 310, electrolyte supply pump 312, electrolyte discharge pump 314, programmable power supply 31
5, switch 401 and tunnel current measuring device 402
Are connected to a control device 316, and all the operations are controlled by the control device 316. Next, the operation when this electrolytic processing apparatus is used will be described.

First, the electrolyte supply pump 312 is turned on, and an appropriate amount of the electrolyte 308 is put into the processing tank 309. Next, the height of the processing tank 309 is adjusted by the processing tank moving stage 310 so that the processing electrode 301 and the workpiece 302 are immersed in the electrolytic solution 308. As means for calculating the cross-sectional shape of the workpiece 302 on the processing line, first, the motor 306 is rotated until an origin return signal of the encoder 307 is detected. Next, the processing electrode moving stage 303 is moved in a direction parallel to the rotation axis of the workpiece 302 so that the tip of the processing electrode 301 is on the processing line of the workpiece 302. Next, switch 401 is processed electrode 301
And the workpiece 302 are switched so as to be connected to the tunnel current measuring device 402, and the tunnel current measuring device 402
When the potential in the electrolytic solution 308 of the processing electrode 301 and the workpiece 302 is set to a value that does not cause an electrochemical reaction, the tunnel current flowing between the two is measured while the tunnel current is kept at a predetermined constant value. The processing electrode moving stage 303 is moved in a direction perpendicular to the rotation axis of the workpiece 302 until the value becomes equal to or more than the value of. When the tunnel current is equal to or greater than a predetermined value, the movement of the processing electrode moving stage 303 is stopped, and the position of the processing electrode 301 at that time, and
The current rotation angle of the workpiece 302 is stored in the control device 316. Next, after moving the processing electrode 301 again by a predetermined distance in a direction in which the distance to the workpiece 302 increases, the workpiece 302 is rotated by a motor 306 at a predetermined minute angle. . The angle detection at that time is performed by the motor 30
This is performed by a rotation pulse signal from the encoder 307 connected to 6. While rotating the workpiece 302, the machining electrode 3
Working electrode moving stage 303 when the tip of 01 is brought close to workpiece 302 until a predetermined tunnel current is detected
The operation of storing the position of the
Repeat until has rotated at least 360 °. Next, based on the rotation angle of the workpiece 302 and the position of the processing electrode moving stage 310 stored in the control device 316, the control device 316 calculates the cross-sectional shape of the workpiece 302 on the processing line, which is a further object. The rotation angle of the workpiece 302 and the position of the processing electrode moving stage 310 when processing into the processing shape are obtained.

Subsequently, at the time of processing, first, the switch 401 is switched so that the processing electrode 301 and the workpiece 302 are connected to the programmable power supply 315. Next, the workpiece 302 is continuously or intermittently rotated by the motor 306, and the current rotation angle of the workpiece is obtained from the home position return signal and the rotation pulse signal of the encoder 307. Based on the rotation angle of the workpiece 302 and the position data of the processing electrode moving stage 310, the processing electrode moving stage 310 is moved to a position corresponding to the rotation angle of the workpiece 302, so that the processing electrode 301 and the workpiece 302 A predetermined voltage is applied by the programmable power supply 315 in the meantime.
Then, in accordance with the rotation of the workpiece 302, the process of moving the position of the processing electrode moving stage is continued, and after a predetermined time has elapsed, or the workpiece 302 has rotated a predetermined number of revolutions. After voltage application and motor 306
Stop the rotation of.

If necessary, the process from the step of measuring the cross-sectional shape of the workpiece 302 on the processing line to the process is repeated, whereby the workpiece 302 is processed into a target processed shape.

[0031]

According to the present invention, the process of measuring the distance from the center of rotation of the processing surface on the processing line in advance while rotating the processing object, and synchronizing the rotation of the processing object with the rotation of the processing object, The turning of the workpiece is performed by applying a voltage between the workpiece and the processing electrode while moving the processing electrode in a direction perpendicular to the rotation axis of the workpiece. Therefore, even when the cross-sectional shape of the workpiece is not a perfect circle, the stress is not uniformly applied as in the case of machining, so that the cutting tool and the workpiece are not damaged. Also, as in conventional electrolytic turning and electric discharge machining, even when the distance between the machining electrode and the workpiece is minute, machining is performed while moving the machining electrode position following the workpiece surface of the workpiece. Therefore, the workpiece and the workpiece do not come into contact with each other. Further, since the processing is performed after measuring the cross-sectional shape of the workpiece on the processing line, the processing can be performed even when the shape of the workpiece is not circular.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a procedure of an electrolytic processing method according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating a procedure of an electrolytic processing method according to a second embodiment of the present invention.

FIG. 3 is an explanatory diagram of an apparatus according to a third embodiment of the electrolytic processing apparatus of the present invention.

FIG. 4 is an explanatory view of an electrolytic processing apparatus according to a fourth embodiment of the present invention.

[Explanation of symbols]

 301: Processing electrode 302: Workpiece 303: Processing electrode moving stage 304: Processing electrode support 305: Chuck 306・ ・ ・ ・ ・ ・ Motor 307 ・ ・ ・ ・ ・ ・ Encoder 308 ・ ・ ・ ・ ・ ・ Electrolyte 309 ・ ・ ・ ・ ・ ・ Processing tank 310 ・ ・ ・ ・ ・ ・ Processing tank moving stage 311 ・ ・ ・ ・・ Electrolyte supply tank 312 ・ ・ ・ ・ ・ ・ Electrolyte supply pump 313 ・ ・ ・ ・ ・ ・ Electrolyte discharge tank 314 ・ ・ ・ ・ ・ ・ Electrolyte discharge pump 315 ・ ・ ・ ・ ・ ・ Programmable power supply 316 ・ ・Control device 401 Switch 402 Tunnel current measuring device 403 Reference electrode 404 Counter electrode 501 Electric resistance measuring device

──────────────────────────────────────────────────続 き Continuing from the front page (72) Kunio Nakajima, 1-8-8 Nakase, Mihama-ku, Chiba City, Chiba Prefecture Inside Seiko Instruments Inc. (72) Inventor Toshihiko Sakuhara 1-8-8, Nakase, Mihama-ku, Chiba City, Chiba JP-A-52-148887 (JP, A) JP-A-61-188020 (JP, A) JP-A-9-267218 (JP, A) JP-A 1-271126 (JP) , A) JP-B-63-9945 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23H 3/00 C25F 3/00 C25F 7/00

Claims (5)

(57) [Claims] 1. A workpiece rotating around a rotation axis and a rod-shaped or needle-shaped processing electrode are opposed to each other through a minute gap in an electrolytic solution, and a voltage is applied between the two. In an electrolytic processing method for causing an electrochemical dissolution reaction or an electrochemical precipitation reaction to carry out the shape processing of the workpiece, while rotating the workpiece, from a rotation center of a processing surface on a processing line while rotating the workpiece. Measuring a distance in advance, a step of calculating a cross-sectional shape of the processing surface on a processing line from the distance obtained by the measurement, and rotating the workpiece while rotating the workpiece based on the cross-sectional shape. Workpiece calculated in synchronization with the rotation angle of the workpiece
From the cross-sectional shape of the object on the processing line,
The angle of rotation of the workpiece when machining into a shape
The distance between the workpiece and the processing electrode is a preset value
Thus, from the step of processing the processing surface by applying a voltage between the workpiece and the processing electrode while moving the processing electrode in a direction perpendicular to the rotation axis of the workpiece, An electrolytic processing method characterized in that: 2. The step of measuring a distance from a rotation center of a surface to be processed on the processing line to move the processing electrode to a position where the processing electrode contacts at an arbitrary point on the processing line of the workpiece. The electrolytic processing according to claim 1, wherein the operation of recording the position of the processing electrode at that time is measured by repeating the operation while rotating the workpiece at least once at a predetermined angular interval. Method. 3. A step of measuring a distance from a rotation center of a surface to be processed on the processing line, wherein a tunnel current having a predetermined magnitude is detected at an arbitrary point on the processing line of the workpiece. And measuring the position of the processing electrode by repeating the operation of recording the position of the processing electrode at that time while rotating the workpiece at least once around a predetermined angular step. Item 6. The electrolytic processing method according to Item 1. 4. A workpiece rotating means for rotating a workpiece in an electrolyte solution, and a processing electrode for performing a shape processing on a workpiece surface of the workpiece by an electrochemical dissolution reaction or an electrochemical deposition reaction. An electrolytic processing apparatus comprising: a distance changing unit configured to change a distance between a processing surface of the workpiece and a tip portion of the processing electrode; a workpiece rotation angle detection that detects a rotation angle of the workpiece. Means, when the workpiece and the processing electrode are brought closer to each other by changing the distance between the processing surface of the workpiece and the tip of the processing electrode by changing the distance by the distance changing means, Contact detection means for detecting contact between the workpiece and the processing electrode; processing electrode contact position storage means for storing the position of the processing electrode when the contact is detected by the contact detection means; and the processing electrode contact position For storage means A processing surface rotation center distance calculating means for calculating a distance between the processing surface on the processing line and the rotation center from the memorized value; the processing object rotation angle detecting means; and the processing surface rotation center distance Processing electrode position control means for moving the processing electrode position in synchronization with the rotation angle by the distance changing means based on a signal from the calculation means, the workpiece rotation angle detection means, and the work surface Based on a signal from the rotation center distance calculation means, the apparatus further comprises voltage synchronization application means for applying a voltage between the workpiece and the processing electrode in synchronization with the rotation angle, and processing the workpiece while rotating the workpiece. The distance from the center of rotation of the work surface on the line is measured in advance, and the work line of the work is calculated in synchronization with the rotation angle of the work.
From the cross-sectional shape above,
The workpiece and the machining power
Applying a voltage between the workpiece and the processing electrode while moving the processing electrode in a direction perpendicular to the rotation axis of the workpiece so that the distance between the electrodes becomes a preset value. An electrolytic processing apparatus characterized in that the surface to be processed is processed by doing. 5. A workpiece rotating means for rotating a workpiece in an electrolyte solution, and a processing electrode for shaping a workpiece surface of the workpiece by an electrochemical dissolution reaction or an electrochemical deposition reaction. An electrolytic processing apparatus comprising: a distance changing unit configured to change a distance between a processing surface of the workpiece and a tip portion of the processing electrode; a workpiece rotation angle detection that detects a rotation angle of the workpiece. Means, when the workpiece and the processing electrode are brought closer to each other by changing the distance between the processing surface of the workpiece and the tip of the processing electrode by changing the distance by the distance changing means, A tunnel current measuring means for measuring a tunnel current flowing between the workpiece and the processing electrode, and a position of the processing electrode when a tunnel current having a predetermined value is detected by the tunnel current measuring means. Processing electrode contact position storage means for storing, from the value stored in the processing electrode contact position storage means, a processing surface rotation center distance calculation means for calculating the distance between the processing surface and the rotation center on the processing line, Processing electrode position control for moving the processing electrode position in synchronization with the rotation angle by the distance changing means based on a signal from the workpiece rotation angle detecting means and the processing surface rotation center distance calculating means; Means, based on a signal from the workpiece rotation angle detecting means, and a signal from the workpiece surface rotation center distance calculating means, applying a voltage between the workpiece and the processing electrode in synchronization with the rotation angle. comprising a voltage synchronization application means for said while rotating the workpiece, the distance from the rotation center of the work surface in the processing line measured in advance, the in synchronization with the rotation angle of the workpiece, the calculated Processing line of the workpiece
From the cross-sectional shape above,
The workpiece and the machining power
Applying a voltage between the workpiece and the processing electrode while moving the processing electrode in a direction perpendicular to the rotation axis of the workpiece so that the distance between the electrodes becomes a preset value. An electrolytic processing apparatus characterized in that the surface to be processed is processed by doing.