Wire discharging frame of linear cutting machine tool

Abstract

The utility model discloses a lower coil holder of a linear cutting machine tool, which comprises a coil holder body, a first eye mold assembly, a second eye mold assembly and a guide assembly are arranged on the coil holder body, a guide wheel is arranged at the turning position of the guide assembly, and the first eye mold assembly comprises a lifting device, a water baffle, an upper guide sleeve and an upper eye mold. The second eye mold assembly comprises an eye mold frame, a lower eye mold, a lower guide sleeve and a wire guide pipe, when wire threading is needed, the lifting device drives the water baffle to ascend, the upper eye mold on the water baffle is made to be close to an automatic wire threading device on the linear cutting machine tool, the distance of an electrode wire from the automatic wire threading device to the upper eye mold is shortened, the risk that the electrode wire deviates is reduced, and the wire threading precision is improved. During wire threading, the electrode wire enters from the upper eye mold and sequentially penetrates through the upper guide sleeve, the wire guide pipe, the lower eye mold and the guide assembly, the wire frame body is provided with the two eye molds, and the wire threading precision is further improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machining technology, specifically to a lower wire frame for a wire EDM machine. Background Technology

[0002] Wire EDM (Electrical Discharge Machining) machines, belonging to the field of electrical discharge machining, were invented by the Lazarinko couple in the Soviet Union. While researching the phenomenon and causes of corrosion damage to switch contacts due to spark discharge, they discovered that the instantaneous high temperature of an electric spark could melt, oxidize, and corrode localized metal, thus pioneering and inventing the EDM method. Wire EDM is a branch of EDM, a process that directly utilizes electric sparks for machining. It uses a moving wire (electrode wire) as the tool electrode to cut the workpiece, hence the name wire EDM. In wire EDM, the relative movement between the workpiece and the electrode wire is achieved by digital control, hence it is also called CNC wire EDM, or simply wire EDM.

[0003] During the processing, wire breakage is also a common occurrence. Traditional wire EDM machines require manual lifting of the molybdenum wire and threading it through each drive wheel. To reduce the time required for manual threading and improve threading efficiency, automatic wire EDM machines have emerged on the market. However, most automatic wire EDM machines on the market currently have a fixed lower wire frame, which cannot shorten the distance between the lower die and the automatic threading device. This results in a higher risk of electrode wire deviation, affecting threading accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide a lower wire frame for a wire EDM machine tool to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lower wire frame of a wire EDM machine tool, comprising: a wire frame body, on which eye mold assembly one, eye mold assembly two, and a guide assembly are provided, and a guide wheel is provided at the turning point of the guide assembly;

[0006] The eye mold assembly includes a lifting device, a baffle plate, an upper guide sleeve, and an upper eye mold. The lifting device is installed inside the wire frame body, and the output end of the lifting device passes through the wire frame body and is connected to the baffle plate. The upper guide sleeve is installed on the baffle plate, and the upper eye mold is installed inside the upper guide sleeve.

[0007] The second eye mold assembly includes an eye mold frame, a lower eye mold, a lower guide sleeve, and a guide wire tube. The eye mold frame is installed inside the wire frame body, the lower guide sleeve is installed at the upper end of the wire frame body, the upper guide sleeve is inserted into the lower guide sleeve, the lower eye mold is installed at the lower end of the eye mold frame, and the guide wire tube is installed on the eye mold frame. One end of the guide wire tube is connected to the lower eye mold, and the other end of the guide wire tube is inserted into the upper guide sleeve and connected to the upper guide sleeve.

[0008] Preferably, a conductive component is provided between the eye mold frame and the guide assembly, and both the lower eye mold and the guide assembly are connected to the conductive component.

[0009] Preferably, the upper guide sleeve consists of an outer guide sleeve and an inner guide sleeve. One end of the inner guide sleeve is inserted into the outer guide sleeve. A fixed tube and a connecting tube are arranged from top to bottom inside the outer guide sleeve. The fixed tube is connected to the connecting tube, and the connecting tube is connected to the inner guide sleeve. The other end of the inner guide sleeve is inserted into the lower guide sleeve, and the other end of the guide wire tube is inserted into the inner guide sleeve and connected to the inner guide sleeve.

[0010] Preferably, the upper end of the fixed tube is provided with a tapered through hole, with the small end of the tapered through hole facing the inside of the fixed tube. The upper eyepiece is installed inside the fixed tube and is connected to the small end of the tapered through hole.

[0011] Preferably, the lower end of the connecting pipe has an inner ring, the outer wall of the inner ring and the inner wall of the outer guide sleeve form a mating groove, the upper end of the inner guide sleeve has an outer ring, the outer ring mates with the mating groove, and the inner ring is inserted into the outer ring.

[0012] Preferably, the wire frame body is provided with several sets of guide post groups. Each guide post group includes a ball bearing guide sleeve and a guide post. The ball bearing guide sleeve is installed on the upper end of the wire frame body, and the guide post is installed on the baffle plate. One end of the guide post is inserted into the ball bearing guide sleeve.

[0013] Preferably, a waterproof guide sleeve is fitted onto the output end of the lifting device, and the waterproof guide sleeve is installed on the upper end of the line frame body.

[0014] Preferably, the aperture of the upper eye mold is smaller than that of the lower eye mold.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When wire threading is required, the lifting device drives the baffle plate to rise, bringing the upper eyelet on the baffle plate closer to the automatic wire threading device on the wire EDM machine. This shortens the distance the electrode wire travels from the automatic wire threading device to the upper eyelet, reducing the risk of electrode wire deviation and improving threading accuracy. During threading, the electrode wire enters from the upper eyelet and passes through the upper guide sleeve, guide tube, lower eyelet, and guide assembly in sequence. The wire frame body is equipped with two eyelets, further improving threading accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is another structural schematic diagram of the present invention;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0021] In the diagram: 1. Wire frame body; 2. Eye mold assembly one; 21. Lifting device; 211. Waterproof guide sleeve; 22. Water baffle; 23. Upper guide sleeve; 231. Outer guide sleeve; 232. Inner guide sleeve; 2321. Outer ring; 233. Fixing tube; 2331. Tapered through hole; 234. Connecting tube; 2341. Inner ring; 235. Connecting groove; 24. Upper eye mold; 3. Eye mold assembly two; 31. Eye mold frame; 32. Lower eye mold; 33. Lower guide sleeve; 34. Guide wire tube; 4. Guide assembly; 41. Guide wheel; 5. Conductive assembly; 61. Ball bearing guide sleeve; 62. Guide post; 100. Electrode wire. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution for the lower wire frame of a wire EDM machine: a lower wire frame of a wire EDM machine includes: a wire frame body 1, on which eye mold assembly 1 2, eye mold assembly 2 3 and guide assembly 4 are provided, and guide wheel 41 is provided at the turning point of guide assembly 4;

[0024] The eye mold assembly 2 includes a lifting device 21, a baffle plate 22, an upper guide sleeve 23, and an upper eye mold 24. The lifting device 21 is installed inside the wire frame body 1. The output end of the lifting device 21 passes through the wire frame body 1 and is connected to the baffle plate 22. The upper guide sleeve 23 is installed on the baffle plate 22, and the upper eye mold 24 is installed inside the upper guide sleeve 23.

[0025] The second eye mold assembly 3 includes an eye mold frame 31, a lower eye mold 32, a lower guide sleeve 33, and a guide wire tube 34. The eye mold frame 31 is installed inside the wire frame body 1. The lower guide sleeve 33 is installed at the upper end of the wire frame body 1. The upper guide sleeve 23 is inserted into the lower guide sleeve 33. The lower eye mold 32 is installed at the lower end of the eye mold frame 31. The guide wire tube 34 is installed on the eye mold frame 31. One end of the guide wire tube 34 is connected to the lower eye mold 32, and the other end of the guide wire tube 34 is inserted into the upper guide sleeve 23 and connected to the upper guide sleeve 23.

[0026] When wire threading is required, the lifting device 21 drives the baffle plate 22 to rise, so that the upper eyelet 24 on the baffle plate 22 is close to the automatic wire threading device on the wire EDM machine, shortening the distance of the electrode wire 100 from the automatic wire threading device to the upper eyelet 24, reducing the risk of the electrode wire 100 deviating, and improving the wire threading accuracy. During wire threading, the electrode wire 100 enters from the upper eyelet 24 and passes through the upper guide sleeve 23, the guide tube 34, the lower eyelet 32, and the guide assembly 4 in sequence. The wire frame body 1 is provided with two eyelets to further improve the wire threading accuracy. After the wire threading is completed, the lifting device 21 drives the baffle plate 22 to descend and reset.

[0027] In this embodiment, a conductive component 5 is provided between the eye mold frame 31 and the guide component 4. The lower eye mold 32 and the guide component 4 are both connected to the conductive component 5. The electrode wire 100 enters the conductive component 5 from the lower eye mold and passes through the conductive component 5 and the guide component 4 in sequence. The conductive component 5 makes the electrode wire 100 conductive. At the same time, the conductive component 5 reduces the vibration generated when the electrode wire 100 turns through the guide wheel 41, reduces the wear of the inner hole of the eye mold by the vibration of the electrode wire 100, extends the service life of the eye mold, and saves costs. This layout makes the conductive component 5 closer to the workpiece, shortens the conductive distance, reduces power loss, and improves conductivity.

[0028] In this embodiment, the upper guide sleeve 23 is composed of an outer guide sleeve 231 and an inner guide sleeve 232. One end of the inner guide sleeve 232 is inserted into the outer guide sleeve 231. A fixing tube 233 and a connecting tube 234 are arranged from top to bottom inside the outer guide sleeve 231. The fixing tube 233 is connected to the connecting tube 234, and the connecting tube 234 is connected to the inner guide sleeve 232. The other end of the inner guide sleeve 232 is inserted into the lower guide sleeve 33. The other end of the guide wire tube 34 is inserted into the inner guide sleeve 232 and is connected to the inner guide sleeve 232.

[0029] In this embodiment, a tapered through hole 2331 is provided at the upper end of the fixed tube 233. The small hole end of the tapered through hole 2331 faces the inside of the fixed tube 233. The upper eyepiece 24 is installed inside the fixed tube 233 and is connected to the small hole end of the tapered through hole 2331.

[0030] In this embodiment, an inner ring 2341 is formed at the lower end of the connecting pipe 234, and a mating groove 235 is formed between the outer wall of the inner ring 2341 and the inner wall of the outer guide sleeve 231. An outer ring 2321 is formed at the upper end of the inner guide sleeve 232, and the outer ring 2321 cooperates with the mating groove 235, with the inner ring 2341 inserted into the outer ring 2321.

[0031] In this embodiment, the wire frame body 1 is provided with several sets of guide posts 62. Each set of guide posts 62 includes a ball bearing guide sleeve 61 and a guide post 62. The ball bearing guide sleeve 61 is installed on the upper end of the wire frame body 1, and the guide post 62 is installed on the water baffle 22. One end of the guide post 62 is inserted into the ball bearing guide sleeve 61 to improve the lifting accuracy of the waterproof plate.

[0032] In this embodiment, a waterproof guide sleeve 211 is fitted on the output end of the lifting device 21. The waterproof guide sleeve 211 is installed on the upper end of the frame body 1 to prevent water from entering the lifting device 21.

[0033] In this embodiment, the aperture of the upper eye mold 24 is smaller than the aperture of the lower eye mold 32 to prevent the electrode wire 100 from being unable to pass through the lower eye mold.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lower wire support for a wire EDM machine, comprising: The wire frame body is characterized in that it is provided with an eye mold assembly one, an eye mold assembly two and a guide assembly, and a guide wheel is provided at the turning point of the guide assembly; The eye mold assembly includes a lifting device, a baffle plate, an upper guide sleeve, and an upper eye mold. The lifting device is installed inside the wire frame body, and the output end of the lifting device passes through the wire frame body and is connected to the baffle plate. The upper guide sleeve is installed on the baffle plate, and the upper eye mold is installed inside the upper guide sleeve. The second eye mold assembly includes an eye mold frame, a lower eye mold, a lower guide sleeve, and a guide wire tube. The eye mold frame is installed inside the wire frame body, the lower guide sleeve is installed at the upper end of the wire frame body, the upper guide sleeve is inserted into the lower guide sleeve, the lower eye mold is installed at the lower end of the eye mold frame, and the guide wire tube is installed on the eye mold frame. One end of the guide wire tube is connected to the lower eye mold, and the other end of the guide wire tube is inserted into the upper guide sleeve and connected to the upper guide sleeve.

2. The lower wire frame of a wire EDM machine tool according to claim 1, characterized in that, A conductive component is provided between the eye mold frame and the guide component, and both the lower eye mold and the guide component are connected to the conductive component.

3. The lower wire frame of a wire EDM machine tool according to claim 1, characterized in that, The upper guide sleeve consists of an outer guide sleeve and an inner guide sleeve. One end of the inner guide sleeve is inserted into the outer guide sleeve. A fixed tube and a connecting tube are arranged from top to bottom inside the outer guide sleeve. The fixed tube is connected to the connecting tube, and the connecting tube is connected to the inner guide sleeve. The other end of the inner guide sleeve is inserted into the lower guide sleeve, and the other end of the guide wire tube is inserted into the inner guide sleeve and connected to the inner guide sleeve.

4. The lower wire frame of a wire EDM machine tool according to claim 3, characterized in that, The upper end of the fixed tube is provided with a tapered through hole, with the small end of the tapered through hole facing the inside of the fixed tube. The upper eyepiece is installed inside the fixed tube and is connected to the small end of the tapered through hole.

5. The lower wire frame of a wire EDM machine tool according to claim 4, characterized in that, The lower end of the connecting tube has an inner ring, the outer wall of the inner ring and the inner wall of the outer guide sleeve form a mating groove, the upper end of the inner guide sleeve has an outer ring, the outer ring mates with the mating groove, and the inner ring is inserted into the outer ring.

6. The lower wire frame of a wire EDM machine tool according to claim 1, characterized in that, The wire frame body is provided with several sets of guide post groups. Each guide post group includes a ball bearing guide sleeve and a guide post. The ball bearing guide sleeve is installed on the upper end of the wire frame body, and the guide post is installed on the baffle plate. One end of the guide post is inserted into the ball bearing guide sleeve.

7. The lower wire frame of a wire EDM machine tool according to claim 1, characterized in that, A waterproof guide sleeve is fitted onto the output end of the lifting device, and the waterproof guide sleeve is installed on the upper end of the wire frame body.

8. The lower wire frame of a wire EDM machine tool according to claim 7, characterized in that, The aperture of the upper eye mold is smaller than that of the lower eye mold.

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