Wire saw and its guide wheel assembly

Abstract

The utility model relates to wire cutting technical field, concretely provides a kind of wire cutting machine and its guide wheel assembly, the wire cutting machine includes frame and wire saw unit, the frame is formed with winding chamber, the wire saw unit includes cutting mechanism and setting in the winding chamber wire winding and unwinding mechanism, the guide wheel assembly includes: guide wheel group, it includes at least one guide wheel;And movable mechanism, it is set in the winding chamber;Wherein, the movable mechanism includes first guide structure, at least one guide wheel in the guide wheel group can move along the first guide structure.Through such constitution, the position adjustment of guide wheel can be sought by the guidance of guide structure, on this basis, the position of guide wheel is adjusted, to better adapt the demand of slicing machine for operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting technology, specifically providing a wire cutting machine and its guide wheel assembly. Background Technology

[0002] A slicing machine is a multi-wire dicing device that produces silicon wafers by slicing hard and brittle materials such as silicon rods using dicing wire (such as diamond wire, which is typically steel wire with tiny diamond particles embedded in its surface) wound around a dicing mechanism. Typically, a slicing machine includes a dicing mechanism (which usually consists of at least two dicing main rollers) and two take-up and unwinding mechanisms (which typically consist of take-up and unwinding rollers). A guide roller assembly is located between the dicing mechanism and each take-up and unwinding mechanism. The dicing main rollers have dense annular grooves (also called main roller grooves). By densely winding diamond wire around the corresponding annular grooves, a wire mesh is formed that allows for continuous dicing of multiple locations on the silicon rod. Based on this, the reciprocating motion of the diamond wire between the dicing mechanism and the take-up and unwinding mechanisms enables multi-wire dicing of the silicon rod near the dicing mechanism.

[0003] Currently, the position of the guide roller assembly, especially the guide rollers near the cutting mechanism, is relatively fixed. This means that if the length of the silicon rod to be cut changes, modifications to the device are required. This results in a longer construction period, and the processing accuracy of the slicing machine may also change. Furthermore, if the coplanar level between the diamond wire near the guide roller and the guide roller is not up to standard (in this case, the diamond wire near the guide roller may be skewed or pulled at an angle, potentially causing wear between the diamond wire and the guide roller groove, increasing the risk of wire breakage), flexible and accurate fine-tuning of the guide roller position is required. Currently, there are generally two methods: one is to use a servo control system, which is complex and costly; the other is for the operator to adjust manually based on experience, which has the problem of inaccurate adjustments. In addition, manual adjustment also has drawbacks such as being time-consuming and unavoidable individual differences in operation. Utility Model Content

[0004] The present invention aims to solve at least part of the above-mentioned technical problems and / or at least part of the above-mentioned technical problems. Specifically, it addresses the technical problem of how to adjust the relative position between the guide wheel and the cutting mechanism as flexibly and accurately as possible to better adapt to the operational reliability of the slicer.

[0005] In view of this, in a first aspect, the present invention provides a guide wheel assembly for a wire cutting machine, the wire cutting machine including a frame and a wire saw unit, the frame forming a winding chamber, the wire saw unit including a cutting mechanism and a wire take-up and unwinding mechanism disposed in the winding chamber, the guide wheel assembly including: a guide wheel group including at least one guide wheel; and a movable mechanism disposed in the winding chamber; wherein the movable mechanism includes a first guiding structure, and at least one guide wheel in the guide wheel group is capable of moving along the first guiding structure.

[0006] This configuration allows for the adjustment of the guide wheel's position through the guiding structure. Furthermore, by adjusting the guide wheel's position, the reliability requirements of the slicer can be better met. The first guiding structure could be a guide rail, optical axis, or guide wheel.

[0007] It is understandable that those skilled in the art can determine the matching relationship between the guide wheel and the guide structure according to actual needs, such as direct matching or indirect matching through an intermediate structure.

[0008] If a motor or other drive mechanism can be configured for the movable mechanism, the guide wheel assembly can be manually pushed along the first guide mechanism, thus ensuring the accuracy of the movement. In the case of manual drive, not only can the corresponding costs be reduced, but also the installation space can be saved. Since the movable mechanism is located near the top of the winding chamber, it can be flexibly installed into the wire EDM machine with almost no change in space, thereby improving the operational reliability of the wire EDM machine under different conditions.

[0009] In one possible implementation of the guide wheel assembly of the wire cutting machine described above, the movable mechanism includes a fixed plate disposed on the frame at a position corresponding to the winding chamber; wherein the first guide structure is disposed at the bottom of the fixed plate.

[0010] This structure ensures the flatness of the activity structure.

[0011] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, the fixing plate is a strip-shaped structure, and at least one guide wheel in the guide wheel assembly can move along the length direction of the strip-shaped structure by means of the first guiding structure.

[0012] This configuration illustrates the possible structural forms of the fixing plate and the arrangement of the first guiding structure thereon. For example, the strip structure can be roughly rectangular, etc.

[0013] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, mounting holes are provided at both ends of the strip structure; and / or positioning holes or positioning grooves are provided on the side of the strip structure along its length.

[0014] This configuration allows for the reliable fixing of the mounting plate to the wire cutting machine. For example, a fixed connection is achieved by using fasteners such as screws with mounting holes, and positioning is achieved by using positioning structures such as positioning screws with positioning holes / grooves.

[0015] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, the guide wheel assembly includes a connecting portion, at least one guide wheel in the guide wheel group is disposed on the connecting portion, and a second guide structure is disposed on the connecting portion, the second guide structure being slidably connected to the first guide structure.

[0016] This configuration provides a possible structural form for the guide wheel assembly.

[0017] It is understood that those skilled in the art can determine the structural form of the first connecting portion, the number of components it contains, and the manner in which the second guiding structure is disposed thereon, etc., according to actual needs. For example, the connecting portion includes multiple connecting blocks that are interconnected with each other.

[0018] In addition, similar to the first guide structure, those skilled in the art can determine the structural form of the second guide structure according to actual needs, such as a structure with holes / grooves, guide wheels, etc.

[0019] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, the connecting portion includes a connecting seat.

[0020] This configuration provides a specific structural form for the connecting part.

[0021] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, a drag chain is provided on the connecting seat.

[0022] This configuration allows for the compact installation of the guide wheel assembly, such as by collecting and restraining the cables of the tension motor.

[0023] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, the first guide structure is a linear guide rail; and / or the second guide structure is a slider.

[0024] In one possible implementation of the guide wheel assembly for the wire EDM machine described above, the cutting mechanism includes at least two main cutting rollers, and the guide wheel assembly includes a guide wheel located between the cutting mechanism and one of the wire take-up and unwinding mechanisms, wherein the axis of the guide wheel is parallel to the axis of the main cutting rollers.

[0025] For a take-up and unwind mechanism in the "unwinding" state, the cutting wire released by the take-up and unwind mechanism is wound around the main cutting roller via the guide wheel. For a take-up and unwind mechanism in the "take-up" state, the cutting wire wound around the main cutting roller is collected by the take-up and unwind mechanism via the guide wheel.

[0026] This configuration provides possible forms for the guide rollers. For a conventional six-guide-roller wire EDM machine, the guide roller assembly includes a wire feeding roller, a tension roller, and a reversing roller. The guide roller, whose axis is parallel to the axis of the main cutting roller and located between the wire take-up / unwinding mechanism and the main cutting roller, can be an improved structure that integrates or partially integrates the functions of the conventional wire feeding roller, tension roller, or reversing roller (e.g., a redistribution of total energy). If the guide roller integrates at least some of the functions of the tension roller in a conventional six-guide-roller structure, it can still be called a tension roller (see the embodiments below), or it can be referred to by other terms such as a wire feeding roller.

[0027] In one possible implementation of the guide wheel assembly for the wire EDM machine described above, the guide wheel assembly includes: a tension motor assembly, which includes a tension motor base and a tension motor disposed on the tension motor base; and a tension swing arm connected to the tension motor; wherein the guide wheel is pivotally disposed on the tension swing arm.

[0028] This configuration presents one possible structural form for the guide wheel assembly. In this case, the guide wheel may include some of the functions of the tension wheel in a traditional six-guide wheel structure, or it may integrate other functions such as cable routing and reversing in addition to the tension wheel functions of a traditional six-guide wheel structure. In other words, although the guide wheel assembly includes a tension motor, it does not mean that the guide wheel has the exact same function as the tension wheel in a six-guide wheel structure.

[0029] In one possible implementation of the guide wheel assembly of the wire EDM machine, the tension motor base is provided with a first tension swing arm limiting structure and a second tension swing arm limiting structure, and the tension swing arm can swing within the range defined by the first tension swing arm limiting structure and the second tension swing arm limiting structure.

[0030] With this configuration, it is possible to limit the swing range of the tension swing arm, such as the first / second tension swing arm limiting structure being a limiting block, limiting post, etc.

[0031] In one possible embodiment of the guide wheel assembly of the wire EDM machine described above, the frame forms a cutting chamber, the cutting mechanism is disposed in the cutting chamber, and the guide wheel assembly includes a wire threading mechanism. The wire threading mechanism includes a wire threading plate and a wire threading plate connecting portion. The wire threading plate is provided with a wire passage groove that allows the cutting wire to pass through the guide wheel into the cutting chamber. The wire threading mechanism is disposed on the tension motor base through the wire threading plate connecting portion.

[0032] This design aims to ensure the reliability of the wire cutting machine. For example, the wire threading plate connection part can include one or more connecting plates, connecting blocks, etc.

[0033] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, a fastening structure is provided, by means of which the guide wheel can be fixed to the movable mechanism.

[0034] This configuration ensures that the guide wheel maintains its position after it has been moved into place, thereby guaranteeing the reliability of the wire EDM machine.

[0035] In one possible implementation of the guide wheel assembly of the wire EDM machine described above, the fastening structure is a knob plunger positioning pin, which can be fixedly connected to the movable mechanism.

[0036] This configuration provides a specific structural form for the fastening structure.

[0037] For example, the knob plunger positioning pin can be set in the threading plate connection part of the threading mechanism, and a positioning pin fixing bracket can be set on the movable mechanism, such as a positioning hole that can cooperate with the knob plunger positioning pin. Alternatively, the positioning hole can be directly machined on the movable mechanism, or the knob plunger positioning pin can be set on other structures in the movable components that include guide wheels.

[0038] In a second aspect, the present invention provides a wire cutting machine, which includes the guide wheel assembly of the wire cutting machine described in any of the preceding claims.

[0039] It is understood that this wire EDM machine has all the technical effects of the guide wheel assembly of any of the aforementioned wire EDM machines, and will not be repeated here.

[0040] As can be seen, in the preferred embodiment of this invention, by configuring a movable structure for at least one guide wheel in the guide wheel assembly within the winding chamber, it is possible to conveniently achieve adjustments, such as when the length of the silicon rod changes or the coplanar level between the diamond wire near the guide wheel and the guide wheel needs to be adjusted, using the first guiding structure. Furthermore, this invention also has the advantages of a simple and compact structure, and the ability to directly implement the movable mechanism on current wire cutting machines. Attached Figure Description

[0041] The preferred embodiment of this utility model is described below using a silicon rod (hereinafter referred to as silicon rod) as the workpiece to be processed and a wire cutting machine as the slicing machine as an example, with reference to the accompanying drawings. In the drawings:

[0042] Figure 1 This diagram illustrates the structure of the guide wheel assembly of a slicer according to an embodiment of the present invention. Figure 1 ;

[0043] Figure 2 This diagram illustrates the structure of the guide wheel assembly of a slicer according to an embodiment of the present invention. Figure 2 ;

[0044] Figure 3 Showing the corresponding Figure 2 A schematic diagram of the guide wheel assembly in its current state being assembled on a slicer;

[0045] Figure 4 This diagram shows a cross-sectional view of the guide wheel assembly of a slicer according to an embodiment of the present invention.

[0046] Figure 5 A schematic diagram of the structure of a conventional slicer (six guide wheels) is shown; and

[0047] Figure 6 This diagram illustrates the structure of a slicer according to an embodiment of this application.

[0048] List of reference numerals in the attached diagram:

[0049] 1. Wire feeding and take-up mechanism;

[0050] 21. Cable guide wheel;

[0051] 22. Tension wheel;

[0052] 23. Reversing wheel;

[0053] 31. First cutting main roller; 32. Second cutting main roller; 33. Third cutting main roller;

[0054] 4. Framework;

[0055] 5. Cutting chamber;

[0056] 6. Winding chamber;

[0057] 7. Silicon rods;

[0058] 8. Diamond wire;

[0059] 9. Guide wheel assembly;

[0060] 91. Tension motor;

[0061] 92. Tension motor base;

[0062] 93. Tension swing arm; 931. Tension swing arm limit post;

[0063] 94. Connecting seat;

[0064] 95. Cable chain;

[0065] 96. Organizing bodies;

[0066] 961. Fixing plate;

[0067] 9611, Mounting holes;

[0068] 9612, Positioning groove;

[0069] 962. Linear guide rail;

[0070] 963. Slider;

[0071] 97. Threading mechanism;

[0072] 971. Cable guide plate; 972. Connecting plate;

[0073] 981. Knob plunger positioning pin; 982. Positioning pin fixing bracket. Detailed Implementation

[0074] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0075] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0077] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can still be implemented without certain specific details. In some examples, the principles of slicers and rotary plunger positioning pins, which are well-known to those skilled in the art, are not described in detail in order to highlight the main points of this utility model.

[0078] There are three types of wire EDM machines: cutting machines, squaring machines, and slicing machines. Taking silicon rods as an example, the cutting machine is mainly used to cut long silicon rods into shorter ones (such as silicon rods with a circular cross-section, referred to as round rods). Specifically, it cuts a silicon rod into multiple segments by cutting along the radial direction. The squaring machine is mainly used to cut round rods into silicon rods with a rectangular cross-section (such as square rods) (referred to as square rods; if the square rods at this stage have not undergone grinding, they are usually called rough rods). Specifically, it cuts the round rods into square rods by cutting along the axial direction to remove the edge skin. The slicing machine is mainly used to densely and continuously cut square rods that meet the required precision (if the square rods at this stage have undergone grinding, they are usually called finished rods) using multi-wire cutting to obtain thin wafers for use. This utility model mainly uses a slicing machine with a wire mesh as an example to illustrate wire EDM machines.

[0079] The slicing machine mainly consists of a main wire saw unit and a feed mechanism. The wire saw unit primarily includes two wire take-up and unwinding mechanisms, a cutting mechanism located within the cutting chamber, and two guide roller assemblies positioned between the cutting mechanism and each wire take-up and unwinding mechanism. The wire take-up and unwinding mechanisms, guide roller assemblies, and cutting mechanism together form a wire feeding mechanism capable of continuously cutting silicon rods into a wire mesh. The feed mechanism is mainly used to mount the silicon rod (the silicon rod is fixed to a workpiece stage such as a crystal tray, which is mounted on the feed mechanism) and provide a vertical feed motion to bring the silicon rod close to the diamond wire mesh wound on the cutting mechanism, thereby performing the slicing operation.

[0080] Reference Figure 5For a traditional six-guide wheel slicing machine, the wire saw unit includes two take-up and untake-up mechanisms 1, a cutting mechanism, and a guide wheel assembly. The take-up and untake-up mechanism 1 typically includes a take-up and untake-up roller, which can reciprocate along its axis. The winding area of ​​the take-up and untake-up roller is provided with multiple wire grooves, and the diamond wire is wound in multiple wire grooves. The guide wheel assembly located between the cutting mechanism and one of the take-up and untake-up mechanisms includes three guide wheels, which can be referred to as the wire feeding wheel 21, tension wheel 22, and reversing wheel 23, respectively. In this example, the cutting mechanism includes a first cutting main roller 31, a second cutting main roller 32, and a third cutting main roller 33 arranged in an inverted triangle. The cutting main rollers (31, 32) are located above the third cutting main roller 33. The wheelbase between the two upper cutting main rollers can be adjusted (e.g., by means of an eccentric sleeve fitted onto the bearing housing, as described below). Accordingly, based on the winding path of the diamond wire 8 formed by this structure, the silicon rod 7 can be cut to obtain a silicon wafer by the reciprocating motion of the diamond wire between two take-up and untake-up mechanisms, guide wheel group and cutting mechanism.

[0081] Reference Figure 6 In one possible implementation, the wire take-up / delivery mechanism 1 and the cutting mechanism in the wire saw unit are... Figure 4 Similarly, however, the guide wheel assembly located between the cutting mechanism and one of the take-up and undo mechanisms consists of only one guide wheel, which, according to its main function, can be called tension wheel 22. The axis of the tension wheel is parallel to the axes of each cutting main roller. Accordingly, in the winding path of the diamond wire 8 formed based on this structure, the diamond wire enters the cutting chamber via the lower third cutting main roller, and then winds onto the upper pair of cutting main rollers. Likewise, through the reciprocating motion of the diamond wire between the two take-up and undo mechanisms, the tension wheel 22, and the cutting mechanism, the silicon rod 7 can be cut to obtain a silicon wafer. Figure 5 compared to, Figure 6 The guide wheel assembly omits the wire feeding wheel and reversing wheel. To ensure the reliability of the slicing machine, a wire feeding assembly can be added to the take-up and unload mechanism. The wire feeding assembly is mainly used to drive the take-up and unload roller assembly to reciprocate along the axis of the take-up and unload roller, thereby realizing the wire feeding function and ensuring the uniform distribution of diamond wire on the take-up and unload roller.

[0082] Obviously, provided it is feasible, those skilled in the art can flexibly adjust the number of guide wheels, their relative positions, and the functions of each guide wheel according to actual needs. The coplanar adjustment in this invention can be achieved using any one or more of the guide wheels.

[0083] Main reference Figures 1 to 4 The guide wheel is used as the tension wheel below. Figure 6 The guide wheel assembly of the slicer of this utility model will be described using the illustrated embodiment as an example.

[0084] In one possible implementation, the guide wheel assembly 9 mainly includes a tension motor 91, a tension swing arm 93, a movable mechanism 96, a threading mechanism 97, and the aforementioned tension wheel 22. The tension motor is mounted on a tension motor base 92, which is fixed to the frame 4 of the slicer. Specifically, the frame 4 forms a cutting chamber 5 and two winding chambers 6. The aforementioned cutting mechanism is located within the cutting chamber, and the two thread take-up and unwinding mechanisms are respectively located within the winding chambers on their respective sides. The tension swing arm 93 is connected to the power output shaft of the tension motor. In this example, the tension motor base is provided with two limiting posts 931 for limiting the swing range of the tension swing arm. The movable mechanism is mainly used to move the tension wheel, and the threading mechanism is mounted on the tension motor base and extends into the cutting chamber.

[0085] In one possible implementation, the tension motor base 92 is connected to the movable mechanism 96 via a connecting seat 94. The movable mechanism mainly includes a fixed plate 961 fixedly disposed in the winding chamber, a linear guide rail 962 disposed on the fixed plate, and a slider 963 capable of sliding along the linear guide rail. (See reference...) Figure 2 In this example, the right end of the connecting seat is fixedly connected to the tension motor seat, and the upward-opening slider is located at the left end of the connecting seat. A linear guide rail is located at the bottom of the fixed plate. An adjustment block can be provided between the connecting seat and the tension motor seat to adjust the height of the tension assembly relative to the cutting mechanism. Furthermore, in this example, a drag chain 95 is provided on the connecting seat to store and constrain the tension motor's cables, etc.

[0086] In this example, the fixing plate 961 is roughly rectangular in shape. The fixing plate 961 has mounting holes 9611 near its two short sides (two mounting holes on each side in this example); the fixing plate 961 has positioning grooves 9612 near its two long sides (two positioning grooves on each side in this example). The fixing plate can be fixed to the top of the frame corresponding to the winding chamber by means of screws and mounting holes. The reliability of the installation can be ensured by means of positioning screws and positioning holes.

[0087] Main reference Figure 4 In this example, the threading mechanism 97 includes a threading plate 971 and a connecting plate 972. The threading plate is mounted on the tension motor base via the connecting plate. The threading plate has a guide groove that allows the diamond wire to pass freely, mainly to ensure that the diamond wire can pass through the cutting mechanism in the cutting chamber without interference from the tension wheel. A knob plunger positioning pin 981 is provided on the connecting plate 972. After the components, mainly including the tension lever, tension wheel, threading mechanism, and tension motor, are moved to the corresponding positions, the plunger of the knob plunger positioning pin is unscrewed and inserted into the positioning hole on the positioning pin fixing bracket 982, thereby fixing the relative positions of the components and the movable mechanism. Figure 4In the diagram, the plunger at the front of the knob's plunger locating pin (left end) is usually in a protruding state. Pulling the knob to the right retracts the plunger (to the right). Rotating the knob 90° while it's pulled out locks the plunger in its retracted position. Rotating it another 90° while still pulled out releases the lock. Releasing the knob causes the plunger to return to its protruding leftward position due to the spring force of the built-in spring.

[0088] It is understood that those skilled in the art can use any structural form of knob plunger positioning pin to achieve the fixing function of this utility model. Obviously, in addition to knob plunger positioning pin, bolts, screws and other fastening structures can also be used to fix the components, including tension wheels and other structures, to the movable mechanism.

[0089] As can be seen, in the preferred embodiment of this utility model, the position of the components including the tension lever, tension wheel, threading mechanism, and tension motor can be flexibly and accurately adjusted through the movable mechanism. For example, the operator can manually move the component including the tension wheel along the linear guide rail to fine-tune the position of the component. In this way, the movable mechanism can be added to the winding chamber with almost no modification to the structure of the slicing machine.

[0090] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A guide wheel assembly for a wire EDM machine, characterized in that, The wire cutting machine includes a frame and a wire saw unit. The frame forms a winding chamber, and the wire saw unit includes a cutting mechanism and a wire take-up and unwinding mechanism disposed in the winding chamber. The guide wheel assembly includes: Guide wheel assembly, comprising at least one guide wheel; and The active mechanism is located in the winding chamber; The active mechanism includes a first guide structure, and at least one guide wheel in the guide wheel group is capable of moving along the first guide structure.

2. The guide wheel assembly of the wire EDM machine according to claim 1, characterized in that, The movable mechanism includes a fixing plate, which is disposed on the frame at a position corresponding to the winding chamber; The first guide structure is located at the bottom of the fixed plate.

3. The guide wheel assembly of the wire EDM machine according to claim 2, characterized in that, The fixing plate is a strip-shaped structure, and at least one guide wheel in the guide wheel assembly can move along the length direction of the strip-shaped structure by means of the first guide structure.

4. The guide wheel assembly of the wire EDM machine according to claim 3, characterized in that, The strip structure is provided with mounting holes at both ends; and / or The strip structure has positioning holes or positioning grooves on its side along its length.

5. The guide wheel assembly of the wire EDM machine according to claim 2, characterized in that, The guide wheel assembly includes a connecting portion. At least one guide wheel in the guide wheel assembly is disposed on the connecting portion, and a second guide structure is disposed on the connecting portion, the second guide structure being slidably connected to the first guide structure.

6. The guide wheel assembly of the wire EDM machine according to claim 5, characterized in that, The connecting part includes a connector.

7. The guide wheel assembly of the wire EDM machine according to claim 6, characterized in that, A cable chain is provided on the connector.

8. The guide wheel assembly of the wire EDM machine according to claim 5, characterized in that, The first guide structure is a linear guide rail; and / or The second guide structure is a slider.

9. The guide wheel assembly of the wire EDM machine according to any one of claims 1 to 8, characterized in that, The cutting mechanism includes at least two main cutting rollers, and the guide roller assembly includes guide rollers located between the cutting mechanism and one of the wire take-up and unwinding mechanisms. The axis of the guide wheel is parallel to the axis of the cutting main roller.

10. The guide wheel assembly of the wire EDM machine according to claim 9, characterized in that, The guide wheel assembly includes: A tension motor assembly includes a tension motor mount and a tension motor disposed on the tension motor mount; and A tension swing arm, which is connected to the tension motor; The guide wheel is pivotally mounted on the tension swing arm.

11. The guide wheel assembly of the wire EDM machine according to claim 10, characterized in that, The tension motor base is provided with a first tension swing arm limiting structure and a second tension swing arm limiting structure. The tension swing arm can swing within the range defined by the first tension swing arm limiting structure and the second tension swing arm limiting structure.

12. The guide wheel assembly of the wire EDM machine according to claim 10, characterized in that, The frame forms a cutting chamber, the cutting mechanism is disposed in the cutting chamber, and the guide wheel assembly includes: The threading mechanism includes a threading plate and a threading plate connecting part. The threading plate is provided with a thread groove that allows the cutting wire to pass through the guide wheel into the cutting chamber. The threading mechanism is mounted on the tension motor base through the threading plate connecting part.

13. The guide wheel assembly of the wire EDM machine according to claim 1, characterized in that, The guide wheel assembly is equipped with a fastening structure, which enables the guide wheel to be fixed to the movable mechanism.

14. The guide wheel assembly of the wire EDM machine according to claim 13, characterized in that, The fastening structure is a knob plunger positioning pin, which can be fixedly connected to the movable mechanism.

15. A wire cutting machine, characterized in that, The wire cutting machine includes the guide wheel assembly of the wire cutting machine according to any one of claims 1 to 14.

Images