JPH052835U - EDM combined machining equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an automatic exchanging device for a cutting tool on the machining tank side in an electric discharge machining combined machining device to enable automatic exchanging of not only the electrode but also the cutting tool. [Structure] The electrode material attached to the spindle is automatically changed to the electrode cutting device installed in the machining tank by the cutting tool exchange device to cut the electrode material, and after machining into a predetermined electrode shape, the electrode is used. Perform electrical discharge machining. [Effect] Conventionally, the process of manually exchanging the cut electrode or cutting tool on the machining tank side can be automated, and the entire process of electrical discharge machining can be automated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to automation of an electric discharge machining combined machining apparatus.

[0002]

[Prior Art]

 FIG. 3 is an overall configuration diagram showing a conventional electric discharge cutting combined machining apparatus (hereinafter referred to as combined machining apparatus). In FIG. 3, 1 is an electrode for electric discharge machining, 2 is a workpiece to be machined, 3 is a machining tank, and 4 is a machining liquid such as insulating oil stored in the machining tank 3. Usually, various kinds of machining by this type of electric discharge machining apparatus are performed by immersing the workpiece 2 in the machining liquid 4 in the machining tank 3. 5 is a pulse current generator for supplying a pulse current for electric discharge to the electrode 1 and the workpiece 2, 8a is a ball screw for moving the spindle of the electric discharge machine in the vertical direction (Z-axis direction), and 8c is the workpiece 2 Is a ball screw that moves the right and left direction (X axis direction), 9a is a servomotor that drives the Z axis ball screw 8a, and 9b is a ball screw that moves the workpiece 2 in the front-back direction (Y axis direction) orthogonal to the paper surface. Servo motor for driving (not shown), 9c is a numerical value for controlling the drive of each servomotor 9a, 9b, 9c according to the machining program. It is a control device. 11 is a head located above the multi-tasking machine, 12 is a column that is a frame material that fixes and supports the head 11, 13 is a bed that is the base of the multi-tasking machine, and 14b is the workpiece 2 A moving table that moves the tank 3 in the front-back direction (Y-axis direction), a moving table 14c that moves the work piece 2 together with the processing tank 3 in the left-right direction (X-axis direction), and 15 a core of the spindle of the multi-tasking machine. A spindle head, which is a rod, 16 is an electrode exchanging device for exchanging the electrode 1 mounted on the spindle with a cutting tool 19 or the like, 17 is an arm for gripping the electrode 1 or the like during the electrode exchanging operation, and 18 is various tools such as the electrode 1 or the like. It is a magazine rack that is stored. Reference numeral 19 is a prepared cutting tool (spindle side).

The conventional combined machining apparatus is configured as described above, and after the electrode 1 for electric discharge machining is machined into a predetermined shape by the machining tool 19, the workpiece 2 is machined using this electrode 1. Is subjected to electrical discharge machining. First, the operation of this conventional electric discharge machine will be described. Intermittent electrical discharge occurs in the machining gap between the electrode 1 and the workpiece 2 and the workpiece 2 in the machining tank 3, and the workpiece 2 is machined by the electrical discharge. At this time, since the electrode 1 is connected to the Z-axis servomotor 9a by the ball screw 8a, the electrode 1 moves up and down in response to a command from the numerical controller 10. Further, a Y-axis servo motor 9b is connected to the moving table 14b in the Y-axis direction via a ball screw (not shown). Each of these moving tables 14b and 14c can be appropriately moved back and forth and left and right according to a command from the numerical controller 10. As a result, the relative displacement in the horizontal direction between the electrode 1 and the workpiece 2 can be arbitrarily changed by positioning in the horizontal direction, processing in the horizontal direction, or the like. As a result, by appropriately controlling the drive of the servomotors 9a, 9b, 9c, it is possible to perform the electric discharge machining of any shape on the workpiece 2 at any position.

Next, each processing step of cutting and electric discharge machining by this combined machining apparatus will be described. FIG. 4a is a main part configuration diagram showing a process before cutting an electrode by the combined machining apparatus of FIG. 3, FIG. 4b is a main part configuration diagram showing a process after the electrode cutting process, and FIG. FIG. 4 is a main part configuration diagram showing a cutting process of a work piece by the combined machining device of FIG. 4B, and FIG. 7B is a main part configuration diagram showing an electric discharge machining process of the work piece. In the figure, 1 to 4, 15 and 19 are the same or corresponding components as those of FIG. In the figure, 20 is an electrode fixing base which is a jig for fixing the electrode 1 in a state of being immersed in the working liquid 4 in the working tank 3, 22 is a cutting portion to be cut by a cutting tool 19, 2
Reference numeral 3 is an electric discharge machined portion which is electric discharge machined by the electrode 1.

First, the process of cutting the electrode 1 for electric discharge machining will be described with reference to FIG. A cutting tool 19 is attached to a spindle head 15 which constitutes a part of the spindle of this combined machining apparatus, and the electrode material is fixed by an electrode fixing base 20 while being immersed in the machining fluid 4 in the machining tank 3 (Fig. 4a). Then, the driving of each of the servomotors 9a, 9b, 9c is appropriately controlled by the numerical control device 10 to perform cutting work, thereby forming the electrode 1 having a predetermined shape. (See Figure 7b).

Next, a process of performing electric discharge machining on the workpiece 2 will be described with reference to FIG. Another cutting tool 19 is attached to the spindle head 15, and the work piece 2 is fixed by the work piece working table 21 while being immersed in the working liquid 4 in the working tank 3. Then, the workpiece 2 is roughly cut by the cutting tool 19 to form a cut portion 22 having a shape close to the final shape. (See Figure 5a).

[0007]

[Problems to be solved by the device]

 Since the conventional combined machining equipment is configured as described above, the electrodes and cutting tools mounted on the spindle side could be automatically replaced, but the electrodes and cutting tools on the machining tank side could be replaced manually. It had to be done and automation was difficult.

The present invention has been made to solve the above-mentioned problems, and obtains a complex machining apparatus that can be automated by providing a device that can automatically replace the electrode and the cutting tool on the machining tank side. The purpose is to

[0009]

[Means for Solving the Problems]

 In the combined machining device according to the present invention, the required cutting tool is automatically attached by the cutting tool exchanging device according to the shape of the electrode cutting device provided in the machining tank, and the cutting tool is used based on the NC program of CAD / CAM. Electrode cutting is performed, and electric discharge machining is performed using the cut electrodes.

[0010]

[Action]

 In the combined machining apparatus according to the present invention, an arbitrary electrode shape is automatically cut in the machining tank, and then electric discharge machining is performed.

[0011]

【Example】

 Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram showing a combined machining apparatus according to an embodiment of the present invention, and FIGS. 2a, 2b, and 2c are principal part configuration diagrams showing an electric discharge machining process by the combined machining apparatus of FIG. It should be noted that in the figure, 1 to 5 and 8a to 19 are parts which are the same as or correspond to the constituent parts of the above-mentioned conventional example, and therefore, duplicated description is omitted here.

In FIG. 1, 75 is a cutting tool exchange device, 76 is an electrode cutting device installed in the processing tank 3, and 77 is a cutting tool.

The machining operation by the combined machining apparatus of the present invention having the above-described configuration will be described. First, the electrode 1 mounted on the head 15 is automatically mounted on the electrode cutting device 76 by a cutting tool exchanging device 75 with a cutting tool 77 such as a milling cutter serving as a cutting means, and the servo motors 9a, 9b, 9c are driven. Is appropriately controlled by the numerical control device 10 for cutting. The cutting tool is automatically replaced on the way depending on the shape.

Data output from the CAD / CAM is previously input to the numerical controller 10, and a control signal is output from the numerical controller 10 by the data to process the predetermined electrode 1.

Electric discharge machining is performed after the electrode 1 having a predetermined shape thus formed is moved to a machining location on the workpiece 2.

In the above embodiment, the case where the electrode is shaped before the start of processing has been described, but it may be appropriately performed during the processing.

[0017]

[Effect of the device]

 The combined machining apparatus according to the present invention is configured so that the electrodes are machined while the necessary cutting tools are automatically changed by the cutting tool exchanging device to the electrode cutting machine provided in the machining tank. As a result, the electrode cutting process and the electric discharge machining of the work piece can be automatically performed continuously, so that the movement work of each machining process is simplified and the entire process from the electrode work to the work piece machining is automatically short. You can save time.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a processing apparatus according to an embodiment of the present invention.

FIG. 2 is a main part configuration diagram showing a processing step by a processing apparatus according to an embodiment of the present invention.

FIG. 3 is an overall configuration diagram showing a conventional processing apparatus.

FIG. 4 is a main part configuration diagram showing a process before and after cutting the electrode according to FIG.

5 is a main part configuration diagram showing a combined machining process and an electric discharge machining process according to FIG. 3. FIG.

[Explanation of Codes] 1 Electrode 2 Workpiece 3 Processing Tank 4 Processing Fluid 5 Pulse Current Generator 8 Ball Screw 9 Servo Motor 10 Numerical Control Device 11 Head 12 Column 13 Bed 14 Moving Table 15 Head 16 Electrode Exchanger 17 Arm 18 Magazine Rack 19 Cutting tool (spindle side) 75 Cutting tool replacement device 76 Electrode cutting device 77 Cutting tool (processing tank side)

Claims (1)

[Claims for utility model registration] [Claim 1] The spindle is provided by means for electric discharge machining of a workpiece installed on the machining tank side by a tool electrode mounted on the spindle side, and a cutting tool installed on the machining tank side. In the electric discharge machining combined machining device equipped with an electrode machining means for machining the tool electrode on the side, a first automatic tool exchanging device for exchanging the spindle side electrode, and a cutting tool installed on the machining tank side An electric discharge machining combined machining apparatus comprising a second automatic tool changer for exchanging a tool.