TWM537947U - Automatic tool change device of electric discharge machine - Google Patents

Description

Automatic tool changer for electric discharge machine

This creation belongs to the field of electric discharge machining equipment, especially for an automatic tool changer of an electric discharge machine, which realizes a fully automated production process and greatly improves the stability and efficiency of the tool change.

According to the general discharge machining (EDM), it is mostly used in the mold industry. The principle of operation is to generate a discharge arc through the fine gap between the electrode and the workpiece, so that the local temperature of the workpiece is increased to make the surface of the workpiece fine. Melting or evaporating to form a cutting or drilling effect; at the same time, a gasification explosion generated by an electric discharge machining fluid of pure water or oil can also cut a local region of the workpiece. The main implementation of EDM is conductive materials, which are not affected by the material properties such as hardness and toughness of the workpiece. Therefore, EDM is usually applied to metal materials that are difficult to process such as superhard and special alloys, even in several micrometers. Microfabrication to the order of a few millimeters.

On the other hand, in the conventional electric discharge machine, the biggest problem is that the electrode for electric conduction, that is, the tool for cutting, is lost due to use, and therefore it is necessary to replace the tool having insufficient length. For example, in the Republic of China, the new patent No. 105135 "Improvement of the EDM machine tool device for automatic tool change" discloses that the spare tool set of the EDM machine is arranged horizontally on a work table, and when the tool is to be replaced, the EDM is performed. The head of the machine will move to the alternate tool set for tool change. However, if the head of the electric discharge machine is constantly moving, it is possible to shadow. In addition, due to the limited width of the work table of the electric discharge machine, the number of spare tools placed is limited, or it is necessary to stop and reinstall the spare tool. In this way, it is difficult to effectively improve the tool change efficiency. .

In addition, the top and bottom ends of the tool are respectively combined by the clamping seat of the processing head and the bottom end of the processing head and the eye mold seat, and are stored in a tool magazine, and the inside of the tool magazine is provided with a transmission. The mechanism transfers the tool from the tool magazine to the processing machine head base by using the corresponding one of the clamping seat and the one eye mold base by mechanical transmission and reversing. In fact, since the tool change process relies on the automatic arm to connect the distance between the tool magazine and the machining head block, the tool change time becomes longer, the tool change efficiency is lowered, and the tool change accuracy is solved. Moreover, the design of such a tool magazine and automatic arm will greatly increase the manufacturing cost and the subsequent maintenance cost, which is not an ideal and practical designer. Therefore, in view of the above, how to develop an automatic tool changer that can realize an automatic process, simplify the design of the mechanism, and make the tool change more efficient is indeed a top priority.

In view of this, one of the aims of the present invention is to provide an automatic tool changing device for an electric discharge machine, through a storage module, a storage space, a feeding module, a processing module and a positioning module. The connection relationship between the two to achieve the effect of automatic tool change, greatly improving the efficiency and stability of the tool change.

In order to achieve the above object, an automatic tool changer of an electric discharge machine of the present invention is mounted on a central frame of the electric discharge machine, and the central frame is provided with a Z-axis track, and the automatic tool change system includes: a storage module is disposed on one side of the central frame, and the storage module portion is provided with a storage barrel for placing a plurality of copper tubes as electrical discharge machining tools therein, and along a working preparation barrel is disposed below the axial direction of the storage barrel, so that the copper tube in the storage barrel falls into the working preparation barrel; a receiving space is disposed under the storage module, the copper The pipe system falls into the storage space through the work preparation bucket in one way; a feeding module, the feeding module comprises a telescopic power source, a first jaw and a connecting seat, and the connecting seat One end is disposed on a side of the central frame, the telescopic power source is located on one side of the receiving space and has a driving shaft to reciprocate outwardly and retractably, and a moving path of the driving shaft passes through the receiving space, the first a clamping jaw is disposed at an end of the driving shaft and synchronously moves for grasping the copper tube located in the receiving space; a processing module, the processing module includes a moving seat and a lifting power a slewing head and a guiding member, the moving seat is movably disposed on the Z-axis track through the lifting power source, the rotating head is disposed under the moving seat, and the guiding member is disposed on the surface of the central frame Located on the moving path of the rotating head, the moving seat is moved The movement path intersects the movement path of the first jaw, and the rotation head is used to clamp the copper tube held by the first jaw; and a positioning module, the positioning module includes a fixing seat, a rotating power source, a copper tube stabilizer and a second clamping jaw, the fixing seat is disposed on the surface of the central frame and corresponding to the other side of the storage module, the rotating power source is disposed on the fixing base On one side, the copper tube stabilizer and the second jaw are connected to the rotary power source, and the copper tube stabilizer and the second jaw are rotated by the rotating power source to correspond to the processing. The module is configured to set a position of the copper tube, and the copper tube stabilizer serves as a stable use when the copper tube is mounted on the rotating head, and the second clamping claw is used as the copper tube after being used and removed after being discarded. use. Moreover, in an embodiment, the lifting power source is wrapped inside the moving seat, and the protection of the lifting power source can be improved. Wherein, the front end of the rotating head is provided with a clamping portion corresponding to a copper tube for clamping the copper tube for processing, thereby improving the stability during the replacement.

In an embodiment, the automatic tool changing device of the electric discharge machine of the present invention further has a control module disposed on one side of the central frame, and the control module is electrically connected to the storage module. The feeding module, the processing module and the positioning module output a plurality of control signals for respectively controlling the sequence of operations of the modules to avoid accidental operation. Moreover, the automatic tool changing device of the electric discharge machine further has a first detecting module disposed on one side of the receiving space and electrically connected to the control module to detect whether the loading space is placed The copper tube outputs a first detection signal for starting the work preparation barrel to drop the copper tube into the storage space. Furthermore, the automatic tool changing device of the electric discharge machine further has a second detecting module disposed on one side of the moving base and electrically connected to the control module to detect the remaining length of the copper pipe. A second detection signal is outputted for starting the processing module and the positioning module, and the copper tube between the rotating head and the guiding member is taken out by the second clamping jaw. And the automatic tool changing device of the electric discharge machine further has a switch disposed between the work preparation barrel and the receiving space, and the switch is electrically connected to the control module to adjust the supply of the copper tubes lose. In addition, the automatic tool changing device of the electric discharge machine further has a delay device disposed in the control module for delaying the operation time of the modules to ensure the buffering effect and correctness of the operation. In summary, the process of automatic tool change can be realized, and the correctness of the whole system during operation can be effectively controlled to avoid the occurrence of malfunction.

Moreover, the automatic tool changing device of the electric discharge machine of the present invention performs an automatic pipe changing operation method, comprising: loading a plurality of copper pipes as electric discharge machining tools in the storage drum; and preparing the barrel through the work preparation a copper tube is outputted into the receiving space; the copper tube is clamped by the first jaw and moved into the processing module through the telescopic power source; and the moving seat is moved downward by the lifting power source, And clamping the copper tube by the rotating head; transmitting the rotating power source Driving the copper tube stabilizer to rotate and contacting the other side of the copper tube, the first jaw is loosened and moved back to the original position by the telescopic power source; and the moving seat is moved down to extend the copper tube Into the guide, the copper tube stabilizer is driven back to the original position by the rotary power source.

Furthermore, the method for operating the automatic tool changer of the electric discharge machine of the present invention for abandoning the waste pipe includes: moving the movable seat up to a set position by the lifting power source; and driving the rotary power source a second clamping jaw and clamping the used copper tube; the rotating head releases the copper tube and is moved up to the highest position by the moving seat; and the second clamping jaw is driven back by the rotating power source In situ, and the second jaw loosens to discard the copper tube.

1‧‧‧Electric discharge machine

11‧‧‧Central rack

12‧‧‧Z-axis orbit

2‧‧‧Automatic tool change system

21‧‧‧Storage module

211‧‧‧ storage bucket

212‧‧‧Work preparation barrel

213‧‧‧ switch

22‧‧‧Feeding space

23‧‧‧Feeding module

231‧‧‧ Telescopic power source

2311‧‧‧Drive shaft

232‧‧‧First jaw

233‧‧‧Connecting seat

24‧‧‧Processing module

241‧‧‧Mobile seat

242‧‧‧ Lifting power source

243‧‧‧Rotating head

2431‧‧‧ gripping department

244‧‧‧ Guides

25‧‧‧ Positioning Module

251‧‧‧ fixed seat

252‧‧‧Rotary power source

253‧‧‧Bronze tube stabilizer

254‧‧‧second jaw

26‧‧‧Control Module

261‧‧‧ retarder

27‧‧‧First detection module

28‧‧‧Second test module

3‧‧‧Bronze tube

S1-1~S1-6‧‧‧Steps

S2-1~S2-4‧‧‧Steps

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.

Fig. 2 is a flow chart showing the steps in the automatic switching of the preferred embodiment of the present invention.

FIG. 3 is a schematic view showing the state corresponding to step 1-1 when the automatic pipe change is performed in the preferred embodiment of the present invention.

FIG. 4 is a schematic view showing the state corresponding to step 1-2 when the automatic pipe change is performed in the preferred embodiment of the present invention.

FIG. 5 is a schematic view showing the state corresponding to steps 1-3 when the automatic pipe change is performed in the preferred embodiment of the present invention.

Figure 6 is a schematic view showing the state corresponding to steps 1-4 when the automatic pipe change is performed in the preferred embodiment of the present invention.

FIG. 7 is a schematic view showing the state corresponding to steps 1-5 when the automatic pipe change is performed in the preferred embodiment of the present invention.

Figure 8 is a corresponding step 1-6 when the automatic exchange is performed for the preferred embodiment of the present invention. State diagram.

Figure 9 is a flow chart showing the steps in the process of discarding the waste pipe for the preferred embodiment of the present invention.

Fig. 10 is a view showing the state corresponding to step 2-1 when the waste pipe is discarded in the preferred embodiment of the present invention.

Figure 11 is a schematic view showing the state corresponding to the step 2-2 when the waste pipe is discarded in the preferred embodiment of the present invention.

Figure 12 is a schematic view showing the state corresponding to step 2-3 when the waste pipe is discarded in the preferred embodiment of the present invention.

Figure 13 is a schematic view showing the state corresponding to steps 2-4 when the waste pipe is discarded in accordance with a preferred embodiment of the present invention.

In order for your review board to have a clear understanding of the content of this creation, please refer to the following description only.

Please refer to FIG. 1 and FIG. 2 to FIG. 8 and FIG. 9 to FIG. 13 , which are schematic structural diagrams of the preferred embodiment of the present invention, and a flow chart of the steps and corresponding states of the steps for performing automatic tube changing, and The flow chart of the steps when the waste pipe is discarded and the state of the corresponding steps are shown. As shown in the figure, an automatic tool change system 2 of an electric discharge machine 1 of the present invention is mounted on a central frame 11 of the electric discharge machine 1, and the central frame 11 is provided with a Z-axis rail 12, which is provided. The automatic tool change system 2 includes a storage module 21, a storage space 22, a feeding module 23, a processing module 24, a positioning module 25, a control module 26, and a first detecting module. 27 and a second detection module 28.

The storage module 21 is disposed on the right side of the central frame 11, the storage mold The storage unit 211 is provided with a storage barrel 211 for placing a plurality of copper tubes 3 as electrical discharge machining tools, and a working preparation barrel 212 is disposed below the axial direction of the storage tank 211 to make the storage barrel The copper tube 3 in the 211 falls into the work preparation barrel 212. A switch 213 is disposed between the work preparation bucket 212 and the receiving space 211, and the switch 213 is electrically connected to the control module 26 to adjust the supply and supply of the copper tubes 3.

The storage space 22 is disposed below the storage module 21, and the copper tube 3 is dropped into the storage space 22 through the work preparation barrel 212 one at a time.

The feeding module 23 includes a telescopic power source 231, a first clamping jaw 232 and a connecting seat 233. One end of the connecting base 233 is disposed on a side of the central frame 11. The telescopic power source 231 is located in the receiving space. One side of the 22 has a drive shaft 2311 for reciprocating outward and retractable, and a moving path of the drive shaft 2311 passes through the receiving space 22, and the first jaw 232 is disposed at an end of the drive shaft 2311. Simultaneous movement for grasping the copper tube 3 located in the receiving space 22.

The processing module 24 includes a moving base 241, a lifting power source 242, a rotating head 243 and a guiding member 244. The lifting power source 242 is wrapped around the moving base 241 to allow the moving base 241 to pass through the lifting and lowering. The power source 242 is movably disposed on the Z-axis rail 12 , and the rotating head 243 is disposed under the moving base 241 . The guiding member 244 is disposed on the surface of the central frame 11 and located on the moving path of the rotating head 243 . The moving path of the moving seat 241 intersects with the moving path of the first jaw 232 to move the copper tube 3 to the position corresponding to the rotating head 243, and the front end of the rotating head 243 corresponds to a copper The tube 3 is provided with a clamping portion 2431 for clamping the copper tube 3 held by the first jaw 232 for processing.

The positioning module 25 includes a fixing base 251, a rotating power source 252, and a copper a tube stabilizer 253 and a second clamping piece 254. The fixing base 251 is disposed on the surface of the central frame 11 and corresponding to the left side of the storage module 21. The rotary power source 252 is disposed on the fixing base 251. On the side, the copper tube stabilizer 253 and the second clamping jaw 254 are connected to the rotating power source 252. The copper tube stabilizer 253 and the second clamping claw 254 are driven by the rotating power source 252. The position of the copper tube 3 is set to the corresponding processing module 24, and the copper tube stabilizer 253 serves as a stable use when the copper tube 3 is mounted on the rotating head 243. The second clamping piece 254 serves as the copper tube. 3 The clip is removed for use after it has been used and discarded.

The control module 26 is disposed on one side of the central rack 11 , and the control module 26 is electrically connected to the storage module 21 , the feeding module 23 , the processing module 24 , and the positioning module 25 . And outputting a plurality of control signals for respectively controlling the sequence of operations of the modules to avoid misoperation.

The first detecting module 27 is disposed on one side of the receiving space 22 and electrically connected to the control module 26 to detect whether the copper tube 3 is placed in the receiving space 22 and outputs a first detection. A signal is provided to activate the work preparation barrel 212 to drop the copper tube 3 into the storage space 22. It should be noted that after the control module 26 receives the first detection signal, the control module 26 sends a control signal to activate the switch 213 to open, forcing the copper tube 3 to fall into the storage space 22 and then close. To avoid excessive copper tube falling into the receiving space 22.

The second detecting module 28 is disposed on one side of the moving base 241 and electrically connected to the control module 26 to detect the remaining length of the copper tube 3 and output a second detecting signal for starting the processing module. The group 24 and the positioning module 25, after receiving the second detection signal, the control module 26 sends a control signal to the positioning module 25, and the second clamping jaw 254 is driven to be located at the rotating head 243 and the guiding member. The copper tube 3 between 244 is taken out.

In addition, the automatic tool change system 2 of the present invention further has a delay 261 disposed in the control module 26 for delaying the operation time of the modules to ensure the buffering effect and correctness of the operation.

As shown in the second to eighth figures, the automatic tool changing system 2 of the present invention performs an automatic pipe changing operation method and a state diagram corresponding to each step, and the steps are as follows:

Step S1-1: Loading a plurality of copper tubes 3 as electric discharge machining tools in the storage tank 211. According to the actual test of the creator, at least 60 copper tubes 3 can be filled in the interior of the storage tank 211, and the length of each copper tube 3 is 600 mm, and the storage space 22 is detected by the first detecting module 27. Is there a copper tube 3 placed in the middle to proceed to the next step.

Step S1-2: Through the work preparation barrel 212 and the switch 213, one of the copper tubes 3 is forced to be output into the storage space 22 one by one. It should be noted that during the process of outputting the copper tube 3 to the receiving space 22, the switch 213 is controlled by the control module 26 to prevent the second copper tube 3 from falling into the receiving space 22 . Inside, to ensure that there are no problems with feeding errors.

Step S1-3: The copper tube 3 is clamped by the first clamping jaw 232 and moved into the processing module 24 through the telescopic power source 231. Moreover, during the operation, the delay device 261 delays the operation between the action modules, and can basically delay one second, but the smooth connection between the actions, avoiding two or more actions simultaneously. Reduce the occurrence of malfunctions.

Step S1-4: The moving base 241 is moved downward by the lifting power source 242, and the copper tube 3 is clamped by the rotating head 243.

Step S1-5: The copper tube stabilizer 253 is rotated by the rotary power source 252 and touches the other side of the copper tube 3. At the same time, the first jaw 232 is loosened and extended. The reduced power source 231 moves back to its original position.

Step S1-6: The moving seat 241 is moved down to extend the copper tube 3 into the guiding member 254, and the copper tube stabilizer 253 is driven back to the original position by the rotating power source 252.

Please refer to the maps 9 to 13 again. The automatic tool change system 2 of the present invention performs the operation method for discarding the waste pipe and the state diagram corresponding to each step, and the steps are as follows:

Step S2-1: The moving base 241 is moved up to a set position by the lifting power source 242, and the set position should correspond to the guiding member 254. It should be noted that the second detecting module 28 detects whether the remaining length of the copper tube 3 meets the processing requirements, and can detect the falling position of the moving base 241 or directly detect The position of the rotating head 243, or the length of the copper tube is directly detected. Therefore, the type or the position of the second detecting module 28 may be different depending on actual needs, so the spirit of the present invention does not deviate from this spirit. In other cases, various embodiments should be included in the scope of the second detection module 28.

Step S2-2: The second clamping jaw 253 is driven by the rotating power source 252 and clamps the used copper tube 3.

Step S2-3: The rotating head 243 releases the copper tube 3, and is moved up to the highest position by the moving seat 241. At this time, the second jaw 253 still maintains the state in which the copper tube is clamped.

Step S2-4: The second clamping jaw 253 is driven back to the original position by the rotary power source 252, and the second clamping jaw 253 releases and discards the copper tube 3. Therefore, a collecting box can be placed under the second jaw 253 to uniformly collect the copper tube 3 which is discarded.

However, the above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, it is common knowledge in the technical field or equivalent or easy to be familiar with the technology. The changer, without departing from the spirit and scope of this creation Equivalent changes and modifications shall be covered by the scope of this creation.

1‧‧‧Electric discharge machine

11‧‧‧Central rack

12‧‧‧Z-axis orbit

2‧‧‧Automatic tool change system

21‧‧‧Storage module

211‧‧‧ storage bucket

212‧‧‧Work preparation barrel

213‧‧‧ switch

22‧‧‧Feeding space

23‧‧‧Feeding module

231‧‧‧ Telescopic power source

232‧‧‧First jaw

233‧‧‧Connecting seat

24‧‧‧Processing module

241‧‧‧Mobile seat

242‧‧‧ Lifting power source

243‧‧‧Rotating head

2431‧‧‧ gripping department

244‧‧‧ Guides

25‧‧‧ Positioning Module

251‧‧‧ fixed seat

252‧‧‧Rotary power source

253‧‧‧Bronze tube stabilizer

254‧‧‧second jaw

26‧‧‧Control Module

261‧‧‧ retarder

27‧‧‧First detection module

28‧‧‧Second test module

Claims (8)

An automatic tool changing device for an electric discharge machine is mounted on a central frame of the electric discharge machine, and the central frame is provided with a Z-axis track. The automatic tool change system comprises: a storage module disposed at the One side of the central rack, the storage module portion is provided with a storage bucket for placing a plurality of copper tubes as electric discharge machining tools, and a working preparation bucket is arranged below the axial direction of the storage barrel The copper tube in the storage tank is dropped into the work preparation barrel; a storage space is disposed under the storage module, and the copper tube is prepared through the work preparation bucket one at a time. Falling into the receiving space; a feeding module, the feeding module comprises a telescopic power source, a first clamping jaw and a connecting seat, one end of the connecting bracket is disposed on a side of the central frame, the telescopic The power source is located on one side of the receiving space and has a driving shaft to reciprocate outwardly and retractably, and a moving path of the driving shaft passes through the receiving space, and the first jaw is disposed at an end of the driving shaft Simultaneous movement for grasping the location in the nesting space a processing module, the processing module includes a moving base, a lifting power source, a rotating head and a guiding member, and the moving seat is movably disposed on the Z-axis track through the lifting power source. The rotating head is disposed under the moving seat, and the guiding member is disposed on the surface of the central frame and located on the moving path of the rotating head, and the moving path of the moving seat intersects with the moving path of the first jaw, and then used The rotating head holds the copper tube clamped by the first clamping jaw; and a positioning module comprising a fixing base, a rotating power source, a copper tube stabilizer and a second clamping jaw The fixing seat is disposed on the surface of the central frame and corresponding to the other side of the storage module, the rotating power source is disposed on one side of the fixing base, the copper tube stabilizer and the The second jaw is connected to the rotary power source, and the copper tube stabilizer and the second jaw are rotated by the rotary power source to rotate to a position corresponding to the processing module to set the copper tube. The copper tube stabilizer serves as a stable use of the copper tube when it is mounted on the rotating head, and the second jaw is used for the removal and removal of the copper tube after it has been used and discarded. The automatic tool changer of the electric discharge machine according to claim 1, wherein the lifting power source is wrapped inside the movable seat. The automatic tool changing device of the electric discharge machine according to claim 1 further has a control module disposed on one side of the central frame, and the control module is electrically connected to the storage module. The feeding module, the processing module and the positioning module output a plurality of control signals for respectively controlling the sequence of operations of the modules to avoid accidental operation. The automatic tool changer of the electric discharge machine according to the third aspect of the invention has a first detecting module disposed on one side of the receiving space and electrically connected to the control module to detect the Whether the copper tube is placed in the storage space and outputs a first detection signal for starting the work preparation barrel to drop the copper tube into the storage space. The automatic tool changing device of the electric discharge machine according to the third aspect of the invention has a second detecting module disposed on one side of the moving base and electrically connected to the control module to detect the one. A second detection signal is outputted from the remaining length of the copper tube for starting the processing module and the positioning module, and the copper tube between the rotating head and the guiding member is taken out by the second clamping jaw. The automatic tool changer of the electric discharge machine according to claim 3, further comprising a switch disposed between the work preparation barrel and the receiving space, and the switch is electrically connected to the control module to Adjust the supply and supply of these copper pipes. For example, the automatic tool changer of the electric discharge machine described in the third paragraph of the patent application has a further extension. The delay device is disposed in the control module to delay the operation time of the modules to ensure the buffering effect and correctness of the operation. The automatic tool changer of the electric discharge machine according to the first or third aspect of the invention, wherein the front end of the rotary head is provided with a clamping portion corresponding to a copper tube for clamping the copper tube. Processing