JPWO2024252592A5

JPWO2024252592A5 -

Info

Publication number: JPWO2024252592A5
Application number: JP2023565634A
Authority: JP
Filing date: 2023-06-07
Publication date: 2025-05-19
Anticipated expiration: 2043-06-07

Description

上述した課題を解決し、目的を達成するために、本開示に係る形彫放電加工機は、主軸と、主軸に着脱可能に装着され、絶縁性を有する加工液の中に置かれた被加工物に対して非接触で放電を行うことで被加工物を加工する加工電極と、加工電極と交換されて主軸に着脱可能に装着され、加工電極によって加工された被加工物を撮影し、加工後の被加工物の形状を示す撮像データを取得する撮像装置と、主軸に接続され、撮像装置が主軸に装着されているときに、撮像装置と被加工物とが接触した場合に、接触を検知する接触検知部と、主軸の移動および停止を制御するＮＣ装置と、外部の電源からの電力を用いて主軸を介して撮像装置に給電を行うとともに、撮像装置が取得した撮像データを主軸を介して受信して、撮像データを画像処理して画像データを生成するコントロールボックスと、を備え、主軸に撮像装置を装着したときに、撮像装置、コントロールボックス、接触検知部、および主軸で１つの電気回路が形成されないように、接触検知部とコントロールボックスとが絶縁され、ＮＣ装置は、接触検知部が接触を検知した場合に、主軸の移動を緊急停止させることを特徴とする。 In order to solve the above-mentioned problems and achieve the object, a die-sinking electric discharge machine according to the present disclosure includes a spindle, a machining electrode that is detachably attached to the spindle and machines a workpiece by performing non-contact discharge on a workpiece placed in an insulating machining fluid, an imaging device that is replaced with the machining electrode and detachably attached to the spindle and photographs the workpiece machined by the machining electrode and obtains imaging data showing the shape of the workpiece after machining, a contact detection unit that is connected to the spindle and detects contact if the imaging device comes into contact with the workpiece when the imaging device is attached to the spindle, an NC device that controls the movement and stop of the spindle, and a control box that supplies power to the imaging device via the spindle using power from an external power source, receives the imaging data acquired by the imaging device via the spindle, and performs image processing on the imaging data to generate image data, and the contact detection unit and the control box are insulated from each other so that a single electric circuit is not formed among the imaging device, control box, contact detection unit, and spindle when the imaging device is attached to the spindle, The NC device is characterized in that it brings the movement of the spindle to an emergency stop when the contact detection unit detects contact.

Claims

The main axis and
a machining electrode that is detachably attached to the spindle and that machines a workpiece placed in an insulating machining fluid by performing non-contact discharge on the workpiece;
an imaging device that is replaced with the processing electrode and detachably attached to the spindle, images the workpiece machined by the processing electrode, and acquires imaging data showing the shape of the workpiece after machining;
a contact detection unit connected to the spindle, the contact detection unit detecting contact between the imaging device and the workpiece when the imaging device is attached to the spindle;
An NC device that controls the movement and stopping of the spindle;
a control box that supplies power to the imaging device via the spindle using power from an external power source, receives the imaging data acquired by the imaging device via the spindle, and processes the imaging data to generate image data;
Equipped with
the contact detection unit and the control box are insulated from each other so that a single electric circuit is not formed among the imaging device, the control box, the contact detection unit, and the spindle when the imaging device is attached to the spindle;
The NC device performs an emergency stop on the movement of the spindle when the contact detection unit detects the contact.
A die-sinking electric discharge machine characterized by:

the imaging device includes a conductive imaging device cover that is attached to cover the imaging device and connected to the contact detection unit,
the contact detection unit detects the presence or absence of contact between the imaging device and the workpiece based on a conduction state of one electric circuit formed by the imaging device cover, the workpiece, and the contact detection unit when the imaging device is attached to the spindle;
2. The die-sinking electric discharge machine according to claim 1 .

A first connector terminal provided on the imaging device;
a second connector terminal provided on the main shaft and configured to establish a connector connection when connected to the first connector terminal;
Equipped with
the connection between the imaging device and the control box, and the connection between the imaging device cover and the contact detection unit are performed by the connector connection;
3. The die-sinking electric discharge machine according to claim 2 .

an automatic tool changer that changes the machining electrode and the imaging device relative to the spindle in response to a signal input from an external device;
4. The die-sinking electric discharge machine according to claim 1, further comprising:

When the imaging device photographs the workpiece,
When the NC device moves the spindle so as to align it with a first measurement point set in advance on the workpiece, the control box stores, as first coordinates, the coordinates of the spindle when the position of the spindle coincides with the first measurement point;
When the NC device moves the spindle so as to align it with a second measurement point set in advance on the workpiece, the control box stores, as second coordinates, the coordinates of the spindle when the position of the spindle coincides with the second measurement point;
The control box calculates a distance between the first measurement point and the second measurement point based on the first coordinates and the second coordinates.
4. The die-sinking electric discharge machine according to claim 1, wherein the die-sinking electric discharge machine is a die-sinking electric discharge machine.