A wire cut electrical discharge machine

Abstract

A kind of wire cut electrical discharge machine, comprising: rack, guide wheel adjusting mechanism and line movement driving mechanism;Movable frame assembly is installed on rack;Part of cutting guide wheel is installed on movable frame assembly, part of cutting guide wheel is installed on rack;Cutting wire is movably wound on multiple cutting guide wheels;The output end of line movement driving mechanism is connected to guide wheel adjusting mechanism, for driving guide wheel adjusting mechanism and its cutting guide wheel movement;Wheel shell cavity is sleeved on the outside of wheel seat;Wheel seat is provided with seat cavity;Wheel body is rotatably limited in seat cavity;One side of wheel body covers the opening of seat cavity;Wheel surface of wheel body is provided with line driving groove;Cavity extends to wheel body, and the inner wall of cavity and the wheel surface of wheel body form wheel surface gap;Cavity is provided with multiple external drainage ports on the other side of wheel body.The scheme can form guide path in wheel body, can transfer cooling liquid to outside, solve the problem that cutting guide wheel is prone to water accumulation after long time use.

Description

Technical Field

[0001] This invention relates to the field of cutting devices, and more particularly to an electrical discharge wire cutting machine. Background Technology

[0002] Existing wire EDM machines typically use copper wire wound around multiple guide rollers. The winding and unwinding of the copper wire drives the guide rollers to rotate. During the cutting process, water is added to the guide rollers as a coolant, which is directly applied to the rollers to provide cooling. However, after prolonged use, water can easily accumulate inside and outside the guide rollers. This accumulated water is difficult to drain and will affect the lifespan of the guide rollers, causing problems such as rusting. Summary of the Invention

[0003] The purpose of this invention is to provide an electrical discharge wire cutting machine, which has a wire drive groove on the wheel surface of the cutting guide wheel body, and the inner wall of the shell cavity is designed to form a wheel surface gap with the wheel body. The shell cavity also has an external drainage port on one side of the wheel body, thereby forming a flow guide path on the wheel body.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An electrical discharge wire cutting machine includes: a frame, a guide wheel adjustment mechanism, and a wire movement drive mechanism;

[0006] The guide wheel adjustment mechanism includes: a movable frame assembly, a cutting guide wheel, and a cutting line;

[0007] The movable frame assembly is mounted on the machine frame; some of the cutting guide wheels are mounted on the movable frame assembly, and some of the cutting guide wheels are mounted on the machine frame; the cutting line movably wraps around the plurality of cutting guide wheels;

[0008] The output end of the line movement drive mechanism is connected to the guide wheel adjustment mechanism, and is used to drive the guide wheel adjustment mechanism and its cutting guide wheel to move.

[0009] The cutting guide wheel includes: a wheel seat, a wheel housing, and a wheel body;

[0010] The shell cavity of the wheel housing is fitted onto the outside of the wheel seat; the wheel seat has a seat cavity; the wheel body is rotatably limited within the seat cavity; one side of the wheel body covers the opening of the seat cavity; the wheel surface of the wheel body has a line drive groove; the shell cavity extends to the wheel body, and the inner wall of the shell cavity forms a wheel surface gap with the wheel surface of the wheel body; the shell cavity has multiple external drainage ports on the other side of the wheel body.

[0011] Alternatively, the cutting guide wheel may further include: a built-in sealing plug;

[0012] The built-in sealing plug is disposed in the seat cavity, and one side of the wheel body abuts against the built-in sealing plug to seal the opening at one end of the seat cavity;

[0013] The opening at one end of the seat cavity forms an internal gap with the wheel body at multiple locations. The internal gap is located on the inner ring of the internal sealing plug, and the multiple internal gaps are connected sequentially from the outer side to the middle of the seat cavity.

[0014] Optimally, at least one of the seat cavity and the wheel body has an annular liquid guiding groove on its opposite side, wherein the liquid guiding groove of one of them forms the built-in gap with the other; and the opening of part of the liquid guiding groove faces the built-in sealing plug.

[0015] Alternatively, the cavity may be provided with a built-in drain outlet on the outer ring of the built-in sealing plug;

[0016] The wheel housing is provided with a liquid inlet, which exposes a portion of the linear drive groove; the inner diameter of the liquid inlet gradually decreases from the outside to the inside, and connects to the linear drive groove at the point where the inner diameter is smallest.

[0017] Alternatively, the cutting guide wheel may further include: a bearing and a threaded locking element;

[0018] One or more of the bearings are installed in the housing cavity;

[0019] The wheel body is provided with an axle and a disc. One end of the axle is connected to one side of the disc, and the other end of the axle is fitted into the inner ring of the bearing. The outer ring of the bearing is fixed to the seat cavity. The disc covers the opening of the seat cavity and is provided with the line drive groove.

[0020] The seat cavity is provided with a cavity baffle; the threaded hole of the threaded locking member is threadedly engaged with the external thread structure of the wheel axle, and the threaded locking member is pressed against the inner ring of the bearing; the outer ring of the bearing is pressed against the cavity baffle.

[0021] Alternatively, the cutting guide wheel may further include: an end cap and an outer plug;

[0022] The cavity is provided with a cavity baffle at one end of the cavity and the end cap is detachably installed at the other end of the cavity. The end cap presses the outer ring of the bearing against the cavity baffle.

[0023] Part of the cutting guide wheel is rotatably mounted on the rotating seat of the movable frame assembly; the rotating seat is provided with a rotating opening, and the wheel seat is rotatably mounted on the rotating opening; the outer plug is detachably mounted on the rotating opening to cover the opening at one end of the seat cavity.

[0024] Optimally, the movable frame assembly includes: a first fixed seat, a second fixed seat, a transverse movable rod, a transverse fixed rod, and a rotating seat;

[0025] The first fixed base is connected to the frame; the first fixed base is provided with a horizontal adjustment hole; one end of the transverse movable rod is linearly and movably limited to the horizontal adjustment hole, and the other end of the transverse movable rod is connected to the second fixed base; part of the cutting guide wheel is installed on the second fixed base; the second fixed base is rotatably connected to the first rotation area of ​​the rotating seat; one end of the transverse fixed rod is rotatably connected to the frame, and the other end of the transverse fixed rod is rotatably connected to the second rotation area of ​​the rotating seat.

[0026] Alternatively, a pair of the movable frame assemblies are mounted on the frame, and the second fixed seat of each movable frame assembly is equipped with the cutting guide wheel; the cutting line passes around the cutting guide wheels of the two movable frame assemblies.

[0027] Alternatively, the movable frame assembly may further include: a locking element;

[0028] The first fixed seat is provided with a locking hole; the locking member is threaded into the locking hole and extends into the horizontal adjustment hole to abut against the transverse movable rod, thereby restricting the position of the transverse movable rod in the locking hole.

[0029] Optimally, the rotating seat is provided with a wire-passing hole through which the cutting line passes; the second rotating area and the wire-passing hole are located on the same plane as the rotating seat, and the wire-passing hole is away from the straight extension direction of the transverse fixing rod.

[0030] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0031] This solution provides an electrical discharge wire cutting machine, which has a wire drive groove on the wheel surface of the cutting guide wheel body, and the inner wall of the housing cavity is designed to form a wheel surface gap with the wheel body. The housing cavity also has an external drain port on one side of the wheel body, thereby forming a flow path on the wheel body, which can transfer the coolant to the outside, solving the problem of water accumulation in the cutting guide wheel after long-term use. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of one embodiment of an electrical discharge wire cutting machine.

[0033] Figure 2 This is a front view schematic diagram of one embodiment of the guide wheel adjustment mechanism;

[0034] Figure 3 This is a schematic diagram of one embodiment of the guide wheel adjustment mechanism;

[0035] Figure 4 yes Figure 3 Enlarged view of section A;

[0036] Figure 5 This is a partial structural diagram showing the connection between the first fixed seat, the transverse movable rod, and the transverse fixed rod.

[0037] Figure 6 This is a partial structural diagram showing the connection between the second fixed seat, the transverse movable rod, and the transverse fixed rod.

[0038] Figure 7 This is a schematic diagram of one embodiment of the cutting guide wheel;

[0039] Figure 8 This is a cross-sectional structural diagram of one embodiment of the cutting guide wheel;

[0040] Figure 9 yes Figure 8 Enlarged view of section B;

[0041] Figure 10 yes Figure 8 Enlarged view of section C.

[0042] in:

[0043] Frame 1; movable frame assembly 2; cutting guide wheel 3; cutting wire 4; locking component 5; guide wheel adjustment mechanism 02; wire movement drive mechanism 03;

[0044] First fixed seat 21, second fixed seat 22, transverse movable rod 23, transverse fixed rod 24, rotating seat 25; support guide seat 26;

[0045] Horizontal adjustment hole 211; locking hole 212; rod guide groove 261; wire passage hole 251; first rotation area 252; second rotation area 253; rotation opening 254;

[0046] Wheel base 31, wheel body 32, bearing 33, threaded lock 34, end cap 35, outer plug 36; wheel housing 37; internal sealing plug 38;

[0047] Seat cavity 311; cavity baffle 312; internal gap 313; liquid guide groove 314;

[0048] Line drive groove 320; wheel axle 321, wheel disc 322; external drain port 371; wheel surface clearance 372; housing cavity 373; internal drain port 374; liquid inlet 375. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0051] like Figure 1-10 An electrical discharge wire cutting machine includes: a frame 1, a guide wheel adjustment mechanism 02, and a wire movement drive mechanism 03;

[0052] The guide wheel adjustment mechanism 02 includes: a movable frame assembly 2, a cutting guide wheel 3, and a cutting line 4;

[0053] The movable frame assembly 2 is mounted on the frame 1; some of the cutting guide wheels 3 are mounted on the movable frame assembly 2, and some of the cutting guide wheels 3 are mounted on the frame 1; the cutting line 4 movably wraps around the plurality of cutting guide wheels 3;

[0054] The output end of the line movement drive mechanism 03 is connected to the guide wheel adjustment mechanism 02, and is used to drive the guide wheel adjustment mechanism 02 and its cutting guide wheel 3 to move.

[0055] The cutting guide wheel 3 includes: wheel seat 31, wheel shell 37 and wheel body 32;

[0056] The shell cavity 373 of the wheel housing 37 is sleeved on the outside of the wheel seat 31; the wheel seat 31 is provided with a seat cavity 311; the wheel body 32 is rotatably limited within the seat cavity 311; one side of the wheel body 32 covers the opening of the seat cavity 311; the wheel surface of the wheel body 32 is provided with a line drive groove 320; the shell cavity 373 extends to the wheel body 32, and the inner wall of the shell cavity 373 forms a wheel surface gap 372 with the wheel surface of the wheel body 32; the shell cavity 373 is provided with a plurality of external drain ports 371 on the other side of the wheel body 32.

[0057] This solution provides an electrical discharge wire cutting machine, which has a wire drive groove 320 on the wheel surface of the wheel body 32 of the cutting guide wheel 3, and designs the inner wall of the shell cavity 373 to form a wheel surface gap 372 with the wheel body 32. The shell cavity 373 also has an external drain port 371 on one side of the wheel body 32, thereby forming a flow path in the wheel body 32, which can transfer the coolant to the outside, solving the problem of water accumulation in the cutting guide wheel 3 after long-term use.

[0058] Specifically, the cutting guide wheel 3 is mainly driven by the line movement drive mechanism 03; the line movement drive mechanism 03 drives the guide wheel adjustment mechanism 02 to move, which can move the guide wheel adjustment mechanism 02 to any processing position, thereby cutting the workpiece through the cutting line 4 wrapped around the cutting guide wheel 3 on the guide wheel adjustment mechanism 02; when it is necessary to drive the cutting guide wheel 3 to rotate, it is only necessary to wrap the cutting line 4 around the line drive groove 320 of the cutting guide wheel 3. The winding and unwinding of the cutting line 4 can drive the line drive groove 320 to rotate, thereby driving the wheel body 32 to rotate; the cutting line 4 is mainly moved by the winding wheel 9 set on the frame 1. The motor directly drives the winding wheel 9 to rotate in different directions to realize the winding and unwinding of the cutting line 4; under the rotation of the cutting guide wheel 3, coolant is needed to cool the cutting guide wheel 3, especially the wheel body 32; for this reason, this solution provides a line drive groove 320 on the wheel surface of the wheel body 32, and the line drive groove 320 on the wheel surface of the wheel body 32 is used to cool the cutting guide wheel 3. The drive groove 320 is used to accommodate the cutting line 4, and the wheel body 32 also forms a wheel surface gap 372 with the inner wall of the housing cavity 373 on the wheel surface. In this design, the coolant output position can be set above the wheel surface of the wheel body 32, and the top of the drive groove 320 is close to the coolant output position. After the coolant falls into the drive groove 320, the coolant can be guided along the length of the drive groove 320, which can cool the drive groove 320 and its cutting line 4. At the same time, when the coolant overflows outside the drive groove 320, the coolant is transferred from the wheel surface of the wheel body 32 to the wheel surface gap 372, and then transferred to one side of the wheel body 32. The coolant flows through one side of the wheel body 32, thereby cooling one side of the wheel body 32. The housing cavity 373 is provided with multiple external drain ports 371 on one side of the wheel body 32. The external drain ports 371 can discharge the coolant on one side of the wheel body 32 to the outside, thereby preventing the coolant from accumulating in the cutting guide wheel 3. Therefore, this solution solves the problem of water accumulation on the cutting guide wheel 3 after prolonged use.

[0059] The linear motion drive mechanism 03 is a known mechanism with driving and moving functions. It only needs to realize the linear movement of the drive guide wheel adjustment mechanism 02 along the X, Y and Z axes. For example, it can be a general cylinder drive mechanism, hydraulic cylinder drive mechanism, motor and lead screw combination drive, conveyor belt drive, mobile trolley, robotic arm, etc.

[0060] Alternatively, the cutting guide wheel 3 may further include: a built-in sealing plug 38;

[0061] The built-in sealing plug 38 is disposed in the seat cavity 311, and one side of the wheel body 32 abuts against the built-in sealing plug 38, thereby sealing the opening at one end of the seat cavity 311;

[0062] The opening at one end of the seat cavity 311 forms an internal gap 313 with the wheel body 32 at multiple locations. The internal gap 313 is located on the inner ring of the internal sealing plug 38, and the multiple internal gaps 313 are connected sequentially from the outer side to the middle of the seat cavity 311.

[0063] This design allows for the installation of a built-in sealing plug 38 between the opening at one end of the seat cavity 311 and one side of the wheel body 32. When one side of the wheel body 32 abuts against the built-in sealing plug 38, it fills the gap between the seat cavity 311 and the wheel body 32, thereby sealing the gap between the two. This effectively prevents coolant from entering the seat cavity 311 from the opening and prevents coolant from accumulating in the seat cavity 311.

[0064] In some embodiments, the built-in sealing plug 38 may loosen after prolonged use. Therefore, this embodiment provides a built-in gap 313. Specifically, the opening at one end of the seat cavity 311 forms a built-in gap 313 with the wheel body 32, and the built-in gap 313 is mainly located within the inner ring of the built-in sealing plug 38. When the coolant passes through the built-in sealing plug 38, it will be placed within the inner ring of the built-in sealing plug 38. Since the built-in gaps 313 are arranged sequentially from the outside to the middle of the seat cavity 311 and are interconnected, the coolant first flows from the outside to the inside to the middle of the seat cavity 311, then flows from the inside to the outside, passes through the built-in sealing plug 38, and finally exits outside the cutting guide wheel 3. Thus, this embodiment has two paths for draining coolant: one is a channel formed between the wheel surface gap 372, one side of the wheel body 32, and the external drain outlet 371; the other is a channel formed between the wheel surface gap 372 and the built-in gap 313. Thus, this embodiment can effectively drain the coolant, solving the problem of water accumulation on the cutting guide wheel 3 after prolonged use.

[0065] Optimally, at least one of the seat cavity 311 and the wheel body 32 is provided with an annular liquid guiding groove 314 on the opposite side, wherein the liquid guiding groove 314 of one of them forms the built-in gap 313 with the other; the groove opening of part of the liquid guiding groove 314 faces the built-in sealing plug 38.

[0066] The coolant channel 314 can effectively increase the residence time of coolant at a certain position. Coolant that has passed the built-in sealing plug 38 needs to fill the coolant channel 314 before overflowing. Then it is transferred to another coolant channel 314 through the built-in gap 313. Therefore, it is increasingly difficult for coolant to pass through the coolant channel 314 from top to bottom. When coolant is placed in a coolant channel 314, if the coolant does not fill the coolant channel 314, it will be guided along the annular structure of the coolant channel 314 to the bottom of the coolant channel 314, shortening the transfer path of coolant inside the wheel seat 31 and avoiding coolant accumulation inside the wheel seat 31.

[0067] Optimally, the plurality of liquid guiding grooves 314 are distributed sequentially from the outside to the center of the seat cavity 311.

[0068] Since the opening of the liquid guiding groove 314 faces the built-in sealing plug 38, and the liquid guiding groove 314 is distributed sequentially from the outside to the middle of the seat cavity 311, when the coolant enters from the outermost liquid guiding groove 314 from top to bottom, if it does not overflow from the liquid guiding groove 314, it will flow along the annular liquid guiding groove 314 and finally be output from the bottom of the liquid guiding groove 314. In this way, a small amount of coolant will not flow directly through the inside of the wheel seat 31 after passing through the built-in sealing plug 38, which increases the difficulty of entering the middle of the wheel seat 31 and thus prevents the coolant from accumulating in the middle of the wheel seat 31 and affecting the mechanical mechanism inside the seat cavity 311.

[0069] Alternatively, the cavity 373 may be provided with a built-in drain port 374 on the outer ring of the built-in sealing plug 38;

[0070] The wheel housing 37 is provided with a liquid inlet 375, which exposes a portion of the line drive groove 320; the inner diameter of the liquid inlet 375 gradually decreases from the outside to the inside, and connects to the line drive groove 320 at the point where the inner diameter is smallest.

[0071] The built-in drain port 374 is located near the built-in sealing plug 38, so that the built-in drain port 374 can discharge the coolant outside the cutting guide wheel 3 at the end of the coolant discharge.

[0072] The inlet 375 provided on the wheel housing 37 can be used to lead the cutting line 4 of the wire drive groove 320 out of the cutting guide wheel 3, and can also be used to input coolant. The inner diameter of the inlet 375 gradually decreases from the outside to the inside, and the slope formed can guide the coolant into the wire drive groove 320, thereby increasing the probability of the coolant contacting the wire drive groove 320, improving the utilization rate of the coolant, and preventing coolant from splashing out.

[0073] Alternatively, the cutting guide wheel 3 may further include: a bearing 33 and a threaded locking element 34;

[0074] One or more of the bearings 33 are installed in the seat cavity 311;

[0075] The wheel body 32 is provided with a wheel axle 321 and a wheel disc 322. One end of the wheel axle 321 is connected to one side of the wheel disc 322, and the other end of the wheel axle 321 is fitted into the inner ring of the bearing 33. The outer ring of the bearing 33 is fixed to the seat cavity 311. The wheel disc 322 covers the opening of the seat cavity 311, and the wheel disc 322 is provided with the line drive groove 320.

[0076] The seat cavity 311 is provided with a cavity baffle 312; the threaded hole of the threaded locking member 34 is threadedly engaged with the external thread structure of the wheel axle 321, and the threaded locking member 34 is pressed against the inner ring of the bearing 33; the outer ring of the bearing 33 is pressed against the cavity baffle 312.

[0077] The wheel body 32 is provided with a wheel axle 321 and a wheel disc 322. The wheel axle 321 can extend into the seat cavity 311 and connect with the bearing 33 in the seat cavity 311, thereby allowing the wheel body 32 to be rotatably confined within the seat cavity 311. This design can further improve the fixing stability of the wheel body 32 by using a threaded locking member 34, so that the wheel disc 322 fully presses against the opening of the seat cavity 311 or the built-in sealing plug 38. When the outer ring of the bearing 33 is actively or passively pressed against the cavity baffle 312, the position of the bearing 33 is fixed. At the same time, the wheel axle 321 of this design can extend into the inner ring of the bearing 33 and engage with the external thread structure of the wheel axle 321 through the threaded hole of the threaded locking member 34. When the thread engagement is complete, the threaded locking member 34 presses against the inner ring of the bearing 33, and the positions of the wheel axle 321 and the inner ring of the bearing 33 are relatively fixed, thus fixing the position of the wheel body 32. This not only facilitates the disassembly of the wheel body 32 but also improves the fixing stability of the wheel body 32. Meanwhile, since the outer ring of the bearing 33 in this design is pressed against the cavity baffle 312, this design can use either a single bearing 33 or two bearings 33. The two bearings 33 can be arranged close together or spaced apart (i.e., the two bearings 33 are separated by a middle spacer 39 to extend the distance between the bearings 33 and make the movement of the wheel axle 321 at different positions smoother).

[0078] Alternatively, the cutting guide wheel 3 may further include: an end cap 35 and an outer plug 36;

[0079] The cavity 311 has a cavity baffle 312 at one end and an end cap 35 is detachably installed at the other end. The end cap 35 presses the outer ring of the bearing 33 against the cavity baffle 312.

[0080] Part of the cutting guide wheel 3 is rotatably mounted on the rotating seat 25 of the movable frame assembly 2; the rotating seat 25 is provided with a rotating opening 254, and the wheel seat 31 is rotatably mounted on the rotating opening 254; the outer plug 36 is detachably mounted on the rotating opening 254 to cover the opening at one end of the seat cavity 311.

[0081] In this design, the bearing 33 can be installed first in the seat cavity 311, with the bearing 33 abutting against the cavity baffle 312. Then, the wheel body 32 can be installed, with the wheel axle 321 of the wheel body 32 passing through the inner ring of the bearing 33. Next, the threaded locking member 34 can be installed and engaged with the external thread of the wheel axle 321, with the threaded locking member 34 abutting against the inner ring of the bearing 33. The wheel body 32 is then installed. Alternatively, the installation of the end cap 35 can be preferably the second-to-last installation step. The end cap 35 is detachably installed in the opening of the seat cavity 311 away from the cavity baffle 312, pressing the outer ring of the bearing 33 against the cavity baffle 312, thus locking the outer ring of the bearing 33 in position. Another option is to install the outer plug 36 as the final installation step. The outer plug 36 is installed in the rotation port 254 of the rotating seat 25, thus covering the opening of the seat cavity 311, improving the aesthetics of the guide wheel adjustment mechanism 02, and preventing external impurities from entering the seat cavity 311.

[0082] When it is necessary to remove the end cap 35, the outer plug 36 can be removed first, then the tool can be inserted into the opening of the seat cavity 311 and the end cap 35 can be removed. The end cap 35 is installed in the opening of the seat cavity 311, which can be a known detachable installation method, as long as the outer ring of the bearing 33 is pressed against the cavity baffle 312. This can be achieved by thread fixing (e.g., the outer thread of the end cap 35 is engaged with the inner thread of the seat cavity 311), screw fixing (e.g., screws are fixed to the seat cavity 311), clamp fixing (e.g., the clamping end cap 35 is locked to the seat cavity 311), or mechanical clamping (e.g., clamping by a cylinder or hydraulic cylinder), etc.

[0083] The end cap 35 is installed in the opening of the seat cavity 311. It can be installed in a known detachable manner, as long as the outer ring of the bearing 33 is pressed against the cavity baffle 312. This can be done by thread fixing (e.g., the outer thread of the end cap 35 is engaged with the inner thread of the seat cavity 311), screw fixing (e.g., screws are fixed to the seat cavity 311), clamp fixing (e.g., the clamp end cap 35 is locked to the seat cavity 311), or mechanical device clamping (e.g., clamping by a cylinder or hydraulic cylinder).

[0084] Optimally, the movable frame assembly 2 includes: a first fixed seat 21, a second fixed seat 22, a transverse movable rod 23, a transverse fixed rod 24, and a rotating seat 25;

[0085] The first fixed base 21 is connected to the frame 1; the first fixed base 21 is provided with a horizontal adjustment hole 211; one end of the transverse movable rod 23 is linearly and movably limited to the horizontal adjustment hole 211, and the other end of the transverse movable rod 23 is connected to the second fixed base 22; part of the cutting guide wheel 3 is installed on the second fixed base 22; the second fixed base 22 is rotatably connected to the first rotation area 252 of the rotating base 25; one end of the transverse fixed rod 24 is rotatably connected to the frame 1, and the other end of the transverse fixed rod 24 is rotatably connected to the second rotation area 253 of the rotating base 25.

[0086] The cutting guide wheel 3 can be directly connected to the frame 1, or indirectly connected to the frame 1 through other mechanisms (e.g., connected to the frame 1 through the movable frame assembly 2). Initially, the cutting guide wheel 3 on the movable frame assembly 2 can be vertically or horizontally aligned with the cutting guide wheels 3 outside the movable frame assembly 2, thus maintaining a vertical or horizontal cutting angle when the cutting line 4 passes around the two cutting guide wheels 3. When it is necessary to perform inclined cutting on the workpiece, the transverse movable rod 23 can be adjusted for linear movement. Specifically, the first fixed seat 21 is connected to the frame 1, the second fixed seat 22 is rotatably connected to the frame 1, and the transverse movable rod 23 can be movably adjusted to be limited to the horizontal adjustment hole 211 of the first fixed seat 21, meaning it can move before being limited, allowing free adjustment of the transverse movable rod 23 in water. The position of the horizontal adjustment hole 211 is adjusted; the movement of the horizontal movable rod 23 drives the movement of the second fixed seat 22. Since the second fixed seat 22 is rotatably connected to the first rotating area 252 of the rotating seat 25, and the second rotating area 253 of the rotating seat 25 is rotatably connected to the horizontal fixed rod 24, and the second fixed seat 22 is rotatably connected to the frame 1, the linear movement of the second fixed seat 22 will drive the rotating seat 25 to swing around the second rotating area 253 as the axis of rotation, thereby adjusting the position of the cutting guide wheel 3 of a certain movable frame assembly 2. The cutting guide wheel 3 of the movable frame assembly 2 will have a relative displacement with other cutting guide wheels 3, thereby causing the cutting line 4 passing through the two cutting guide wheels 3 to have an angular offset, so that the cutting line 4 is adjusted to an inclined state and cuts the workpiece at an inclined angle.

[0087] In some embodiments, some cutting guide wheels 3 are mounted on the frame 1, and some cutting guide wheels 3 are mounted on the movable frame assembly 2.

[0088] In the preferred embodiment, a pair of movable frame assemblies 2 are mounted on the frame 1, and the second fixed seat 22 of each movable frame assembly 2 is equipped with the cutting guide wheel 3; the cutting line 4 passes around the cutting guide wheels 3 of the two movable frame assemblies 2.

[0089] The movable frame assemblies 2 are preferably arranged in pairs, and each movable frame assembly 2 is equipped with a corresponding cutting guide wheel 3. In this way, when adjusting the angle, only the transverse movable rod 23 of one movable frame assembly 2 can be adjusted, or the transverse movable rods 23 of both movable frame assemblies 2 can be adjusted. When the transverse movable rods 23 of the two movable frame assemblies 2 move synchronously a certain distance, the angle of the cutting line 4 can remain unchanged, which is mainly used to adjust the horizontal or vertical position of the cutting line 4 during cutting. When the distances moved by the transverse movable rods 23 of the two movable frame assemblies 2 are different, for example, when the transverse movable rod 23 of one movable frame assembly 2 is adjusted, the angle of the cutting line 4 can be tilted, which is mainly used to adjust a specific tilt cutting angle.

[0090] One end of the transverse movable rod 23 is linearly movable and limited to the horizontal adjustment hole 211. This can be achieved through a known connection method, such as clamp fixation or snap-fit ​​fixation, as long as the transverse movable rod 23 is limited after moving within the horizontal adjustment hole 211.

[0091] Alternatively, the movable frame assembly 2 may further include: a locking element 5;

[0092] The first fixed base 21 is provided with a locking hole 212; the locking member 5 is threaded into the locking hole 212 and extends into the horizontal adjustment hole 211 to abut against the transverse movable rod 23, so as to limit the position of the transverse movable rod 23 in the locking hole 212.

[0093] This solution preferably uses the threaded structure of the locking element 5 to limit the transverse movable rod 23. When the locking element 5 is released, the transverse movable rod 23 can move freely in the horizontal adjustment hole 211, thereby adjusting the angle of the second fixed seat 22 and its cutting guide wheel 3. When the position of the transverse movable rod 23 reaches a specific position, the locking element 5 can be tightened so that the locking element 5 and the locking hole 212 are fully threaded, thereby restricting the position of the transverse movable rod 23 in the horizontal adjustment hole 211.

[0094] Among them, the locking component 5 is a mechanism with a threaded structure, such as a screw, bolt or similar structure.

[0095] Alternatively, the movable frame assembly 2 may include: a support guide seat 26;

[0096] The support guide seat 26 is installed on the frame 1; the support guide seat 26 is provided with a horizontally extending rod guide groove 261; the transverse movable rod 23 moves horizontally in the rod guide groove 261.

[0097] The support guide seat 26 is installed on the frame 1 and has a rod guide groove 261. It can be used to guide the horizontal movement of the transverse movable rod 23 and can also provide support for the transverse movable rod 23 at multiple positions to improve the smoothness of the movement of the transverse movable rod 23.

[0098] Alternatively, the rotating seat 25 is provided with a wire-passing hole 251 through which the cutting line 4 passes; the second rotating area 253 and the wire-passing hole 251 are located on the same plane as the rotating seat 25, and the wire-passing hole 251 is away from the straight extension direction of the transverse fixing rod 24.

[0099] The cutting line 4 passes through the wire hole 251, which surrounds the outer periphery of the cutting line 4. This restricts the range of motion of the cutting line 4, prevents it from deviating from the preset range, and improves cutting stability.

[0100] The second rotating area 253 and the wire hole 251 are located on the same plane as the rotating seat 25, specifically on the bottom side of the rotating seat 25. The wire hole 251 is located outside the straight extension direction of the transverse fixing rod 24. Therefore, the wire hole 251 and the transverse fixing rod 24 are not on the same straight line. The connection area between the transverse fixing rod 24 and the rotating seat 25 can be larger and the connection tightness can be higher without affecting the size of the wire hole 251.

[0101] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wire electrical discharge machining (EDM) machine, characterized in that, include: Frame, guide wheel adjustment mechanism, and line movement drive mechanism; The guide wheel adjustment mechanism includes: a movable frame assembly, a cutting guide wheel, and a cutting line; The movable frame assembly is mounted on the machine frame; some of the cutting guide wheels are mounted on the movable frame assembly, and some of the cutting guide wheels are mounted on the machine frame; the cutting line movably wraps around the plurality of cutting guide wheels; The output end of the line movement drive mechanism is connected to the guide wheel adjustment mechanism, and is used to drive the guide wheel adjustment mechanism and its cutting guide wheel to move. The cutting guide wheel includes: wheel seat, wheel housing, wheel body, built-in sealing plug, bearing and threaded locking component; The shell cavity of the wheel housing is fitted onto the outside of the wheel seat; the wheel seat has a seat cavity; the wheel body is rotatably limited within the seat cavity; one side of the wheel body covers the opening of the seat cavity; the wheel surface of the wheel body has a line drive groove; the shell cavity extends to the wheel body, and the inner wall of the shell cavity forms a wheel surface gap with the wheel surface of the wheel body; the shell cavity has multiple external drainage ports on the other side of the wheel body; The built-in sealing plug is disposed in the seat cavity, and one side of the wheel body abuts against the built-in sealing plug to seal the opening at one end of the seat cavity; The opening at one end of the seat cavity forms an internal gap with the wheel body at multiple locations. The internal gap is located on the inner ring of the internal sealing plug, and the multiple internal gaps are connected sequentially from the outer side to the middle of the seat cavity. At least one of the seat cavity and the wheel body has an annular liquid guiding groove on its opposite side, and the liquid guiding groove of one of them forms the built-in gap with the other; the opening of part of the liquid guiding groove faces the built-in sealing plug; The cavity is provided with a built-in drain port on the outer ring of the built-in sealing plug; The wheel housing is provided with a liquid inlet, and the liquid inlet exposes a portion of the linear drive groove; the inner diameter of the liquid inlet gradually decreases from the outside to the inside, and connects to the linear drive groove at the point where the inner diameter is smallest; One or more of the bearings are installed in the housing cavity; The wheel body is provided with an axle and a disc. One end of the axle is connected to one side of the disc, and the other end of the axle is fitted into the inner ring of the bearing. The outer ring of the bearing is fixed to the seat cavity. The disc covers the opening of the seat cavity and is provided with the line drive groove. The seat cavity is provided with a cavity baffle; the threaded hole of the threaded locking member is threadedly engaged with the external thread structure of the wheel axle, and the threaded locking member is pressed against the inner ring of the bearing; the outer ring of the bearing is pressed against the cavity baffle; The movable frame assembly includes: a first fixed seat, a second fixed seat, a transverse movable rod, a transverse fixed rod, and a rotating seat; The first fixed base is connected to the frame; the first fixed base is provided with a horizontal adjustment hole; one end of the transverse movable rod is linearly and movably limited to the horizontal adjustment hole, and the other end of the transverse movable rod is connected to the second fixed base; part of the cutting guide wheel is installed on the second fixed base; the second fixed base is rotatably connected to the first rotation area of ​​the rotating seat; one end of the transverse fixed rod is rotatably connected to the frame, and the other end of the transverse fixed rod is rotatably connected to the second rotation area of ​​the rotating seat.

2. The wire electrical discharge machining (EDM) machine according to claim 1, characterized in that, The cutting guide wheel also includes: an end cap and an outer plug; The cavity is provided with a cavity baffle at one end of the cavity and the end cap is detachably installed at the other end of the cavity. The end cap presses the outer ring of the bearing against the cavity baffle. Part of the cutting guide wheel is rotatably mounted on the rotating seat of the movable frame assembly; the rotating seat is provided with a rotating opening, and the wheel seat is rotatably mounted on the rotating opening; the outer plug is detachably mounted on the rotating opening to cover the opening at one end of the seat cavity.

3. A wire electrical discharge machining (EDM) machine according to claim 1 or 2, characterized in that, A pair of the movable frame assemblies are mounted on the frame, and the second fixed seat of each movable frame assembly is equipped with the cutting guide wheel; the cutting line passes around the cutting guide wheels of the two movable frame assemblies.

4. The wire electrical discharge machining (EDM) machine according to claim 3, characterized in that, The movable frame assembly also includes: a locking element; The first fixed base is provided with a locking hole; the locking member is threaded into the locking hole and extends into the horizontal adjustment hole to abut against the transverse movable rod, thereby limiting the position of the transverse movable rod in the horizontal adjustment hole.

5. The wire electrical discharge machining (EDM) machine according to claim 4, characterized in that, The rotating base is provided with a wire-passing hole, through which the cutting line passes; the second rotating area and the wire-passing hole are located on the same plane as the rotating base, and the wire-passing hole is away from the straight extension direction of the transverse fixing rod.

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