A wire cutting machine for cutting an inner hole of a metal and a method for cutting an inner hole
By introducing a motor, control system, and special roller assembly into the wire cutting machine, combined with a soft wire and hook device, the safety and reliability issues of traditional wire cutting machines when cutting internal holes are solved, and a safe and convenient wire threading process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YUEQING FENGXUN AUTOMATION TECH CO LTD
- Filing Date
- 2023-09-12
- Publication Date
- 2026-05-29
AI Technical Summary
When traditional wire cutting machines cut the inner holes of metal, the metal wire is prone to cutting human skin and bending, leading to safety hazards and damage to the metal wire.
The metal wire cutting machine, which includes a motor, control system, wire collecting rollers and fixed roller assembly, achieves safe and convenient wire threading by means of the lateral synchronous movement of the first displacement roller and the second displacement roller, combined with the soft wire and hook device, avoiding direct contact and bending.
It enables a safe and convenient wire threading process when cutting inner holes, avoiding damage to the metal wire and personal injury, and improving operational safety and equipment reliability.
Smart Images
Figure CN117139758B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cutting machines, and more particularly to a metal wire cutting machine and method for cutting internal holes. Background Technology
[0002] A wire EDM machine is a device used for the precise cutting of sheet metal materials, commonly used in industries such as metal processing and manufacturing, mechanical automation, and automotive. The basic structure of a traditional wire EDM machine includes components such as a wire feed roller, a cutting wire, rollers, and a control system. Traditional wire EDM machines use a thin wire as the cutting tool, cutting the material through pulsed electrical discharges during high-speed wire drawing. The cutting wire is typically made of molybdenum alloy, which has high conductivity. During the cutting process, the cutting wire is taut with the rollers as support points; the upper and lower rollers are perpendicular and close to the metal material to be processed, performing pulsed electrical discharges for cutting. However, traditional wire EDM machines have some drawbacks.
[0003] Traditional wire cutting machines require drilling holes in metal parts before cutting internal holes. The wire is then detached from the feed rollers and manually threaded through the hole. This can be done by hand or by using tools to hold the wire. The drawbacks of this traditional method are: the wire is sharp and can easily cut the skin, causing injury to workers; and using tools to hold the wire can cause it to bend, rendering it unusable.
[0004] This invention aims to provide an improved wire cutting machine that addresses the problems of traditional wire cutting machines by introducing a new structure. The improved wire cutting machine makes the wire threading process safe and convenient when cutting internal holes, and it does not damage the metal wire. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide a metal wire cutting machine and a method for cutting inner holes that is safe and convenient in the wire threading process when cutting inner holes, and does not directly contact the metal wire and cause damage to the metal wire.
[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is a metal wire cutting machine capable of cutting internal holes, including a motor, a control system, a wire collecting roller, and a fixed roller assembly. The metal wire is sleeved on the outside of the wire collecting roller and the fixed roller assembly. The fixed roller assembly is characterized by including a first fixed roller, and the wire collecting roller and the first fixed roller form a cutting area. A first displacement roller and a second displacement roller are also provided in the cutting area. The first displacement roller and the second displacement roller move synchronously in the lateral direction. The first displacement roller is located above the second displacement roller. The end of the metal wire is connected to a flexible wire. The machine also includes a hook and a clamping device. The hook is used to lift the flexible wire and pass it through the hole to be cut in the part. The clamping device has an open state and a clamping state. The outer end of the flexible wire is provided with a knot. The wire collecting roller is provided with a wire hook. The upper part of the wire hook is a flared opening, and the lower part of the wire hook is a vertical slit.
[0007] A further preferred embodiment of the present invention is that the hook is elongated, with the hook portion located at the lower end of the hook.
[0008] A further preferred embodiment of the present invention is as follows: the fixed roller assembly includes a first fixed roller, a wire-collecting roller, and a cutting area formed between the first fixed roller and the wire-collecting roller. A first displacement roller and a second displacement roller are also disposed within the cutting area. The first displacement roller and the second displacement roller move synchronously laterally. The first displacement roller is positioned above the second displacement roller. The first displacement roller and the wire-collecting roller are connected by a first metal wire, which is positioned above both the first displacement roller and the wire-collecting roller. The second displacement roller and the first fixed roller are connected by a second metal wire, which is positioned below both the second displacement roller and the first fixed roller. The first displacement roller and the second displacement roller are connected by a third metal wire, which is positioned on opposite sides of the first displacement roller and the second displacement roller. The first metal wire, the second metal wire, and the third metal wire form a Z-shaped metal wire.
[0009] A further preferred embodiment of the present invention is that the upper ends of the first displacement roller and the first wire collecting roller are at the same height, so that the first metal wire is in the horizontal direction.
[0010] A further preferred embodiment of the present invention is that the lower ends of the second displacement roller and the first fixed roller are at the same height, so that the second metal wire is in the horizontal direction.
[0011] A further preferred embodiment of the present invention is that the opposite sides of the first displacement roller and the second displacement roller are on the same vertical line, so that the third metal wire is perpendicular to the direction.
[0012] A further preferred embodiment of the present invention is as follows: the wire collecting roller assembly includes a first wire collecting roller and a second wire collecting roller, a cutting area is formed between the first wire collecting roller and the second wire collecting roller, and a first displacement roller and a second displacement roller are also arranged within the cutting area. The first displacement roller and the second displacement roller move synchronously laterally, and the first displacement roller is positioned above the second displacement roller; the first displacement roller and the first wire collecting roller are connected by a first metal wire, and the first metal wire is positioned above the first displacement roller and the first wire collecting roller; the second displacement roller and the second wire collecting roller are connected by a second metal wire, and the second metal wire is positioned below the second displacement roller and the second wire collecting roller; the first displacement roller and the second displacement roller are connected by a third metal wire, and the third metal wire is positioned on opposite sides of the first displacement roller and the second displacement roller; the first metal wire, the second metal wire, and the third metal wire form a Z-shaped metal wire.
[0013] A method for cutting internal holes using a wire EDM machine based on the above structure includes the following steps:
[0014] Step 1: Rotate the wire collecting roller, and the soft wire at the end of the metal wire at the second displacement roller will detach from the wire collecting roller;
[0015] Step 2: Fix the free end of the flexible wire by clamping it with the clamping device, and wrap the other end of the flexible wire around the outside of the second displacement gear. Rotate the wire collecting roller to make both the metal wire and the flexible wire taut.
[0016] Step 3: Drill holes at the locations where the inner holes of the parts need to be cut to form cutting holes for threading wire;
[0017] Step 4: Pass the hook through the wire-threading hole from top to bottom, align the hook with the wire, lift the wire upwards, the clamping device will open, the wire will disengage from the clamping device, and the wire will pass through the hole to be cut along with the hook.
[0018] Step 5: Locate the free end of the wire and fix it to the wire collecting roller. As the wire collecting roller rotates, the metal wire enters the hole to be cut.
[0019] Step 6: Move the hook with the soft line above the wire collecting roller, align the hook with the wire hook and move it down. The soft line enters the vertical gap, and the knot of the soft line comes off the hook and is fixed by the wire hook.
[0020] Step 7: Rotate the wire collecting roller to move the metal wire and cut the hole to be cut.
[0021] A further preferred embodiment of the present invention is as follows: a knot is provided at the outer end of the flexible wire, and a wire hook is provided on the wire collecting roller. The upper part of the wire hook is a flared opening, and the lower part of the wire hook is a vertical slit. In the fifth step, the flexible wire is fixed to the wire collecting roller by the knot and the wire hook.
[0022] A further preferred embodiment of the present invention is that the size of the hook portion of the hook is smaller than the size of the knot of the soft line. In the fourth step, the hook portion hooks the knot and lifts the soft line upwards, and the soft line will not detach from the hook portion.
[0023] This invention adds a flexible cord to the end of the metal wire. When the metal wire needs to be threaded through the hole to be cut, a rotating wire-collecting roller exposes the flexible cord end, which is then secured by a clamping device. The hook catches the flexible cord and lifts it upwards, causing the clamping device to open and release the cord. The cord passes through the hole to be cut and then moves above the wire-collecting roller, where it is secured by a wire hook. The user's hand is not in direct contact with the metal wire, and the hook does not directly contact it, preventing significant bending of the wire during threading. Therefore, this invention provides a safe and convenient threading process when cutting inner holes, without direct contact with the metal wire and thus preventing damage. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of a traditional wire cutting machine.
[0025] Figure 2 A schematic diagram of a metal wire cutting machine with a single wire-collecting roller;
[0026] Figure 3 Schematic diagram of wire threading in a single-wire cutting machine with a single wire roller. Figure 1 ;
[0027] Figure 4 Schematic diagram of wire threading in a single-wire cutting machine with a single wire roller. Figure 2 ;
[0028] Figure 5 Schematic diagram of wire threading in a wire cutting machine with double wire rollers Figure 1 ;
[0029] Figure 6 Schematic diagram of wire threading in a wire cutting machine with double wire rollers Figure 2 ;
[0030] Figure 5 This is a schematic diagram of the structure of a wire hook;
[0031] Figure 6 A schematic diagram showing the addition of a flexible wire to the metal wire of this invention. Detailed Implementation
[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0033] like Figure 1As shown, this invention adds a first displacement roller 1 and a second displacement roller 2 to a traditional metal cutting machine. A metal wire 3 is fitted onto the opposite sides of the first displacement roller 1 and the second displacement roller 2. A first metal wire 5 is placed between the wire-collecting roller 4 and the first displacement roller 1. A second metal wire 7 is placed between the first fixed roller 6 and the second displacement roller 2. A third metal wire 8 is placed between the first displacement roller 1 and the second displacement roller 2. The three metal wires 3 are combined to form a Z-shaped metal wire structure. When the first displacement roller 1 and the second displacement roller 2 move simultaneously, the third metal wire 8 moves accordingly. Because of the special structure of this invention, the circumference formed by the metal wires 3 remains unchanged, which will not affect the operation of the equipment. After the third metal wire 8 moves, it can cut the parts without moving the parts themselves. In order to be applied to different types of cutting machines, this invention has developed two different specific implementation methods.
[0034] like Figures 2-4As shown, Embodiment 1: A metal wire 3 cutting machine suitable for a single wire-collecting roller 4. A novel metal wire 3 cutting machine includes a motor, a control system, a wire-collecting roller 4, and a fixed roller assembly. The motor drives the wire-collecting roller 4 to rotate, and the control system controls the rotation speed and direction of the motor. The metal wire 3 is sleeved on the outside of the wire-collecting roller 4 and the fixed roller assembly. The fixed roller assembly includes a first fixed roller 6, a second fixed roller 9, and a third fixed roller 10. The wire-collecting roller 4 and the first fixed roller 6 form a cutting area, and the cutting activity is carried out on the metal wire within the cutting area. A first displacement roller 1 and a second displacement roller 2 are also provided within the cutting area. The first displacement roller 1 and the second displacement roller 2 move synchronously laterally. The first displacement roller 1 is positioned above the second displacement roller 2. The first displacement roller 1 and the wire-collecting roller 4 are connected by a first metal wire 5, and the first metal wire 5 is positioned above the first displacement roller 1 and the wire-collecting roller 4. The upper ends of the first displacement roller 1 and the wire-collecting roller 4 are at the same height, so that the first metal wire 5 is in a horizontal direction. The second displacement roller 2 and the first fixed roller 6 are connected by a second metal wire 7, which is positioned below both the second displacement roller 2 and the first fixed roller 6. The lower ends of the second displacement roller 2 and the first fixed roller 6 are at the same height, making the second metal wire 7 horizontal. The first displacement roller 1 and the second displacement roller 2 are connected by a third metal wire 8, which is positioned on opposite sides of the first displacement roller 1 and the second displacement roller 2. The opposite sides of the first displacement roller 1 and the second displacement roller 2 are on the same vertical line, but the first displacement roller 1 and the second displacement roller 2 are not entirely on a vertical line, exhibiting a certain degree of skewness, ultimately making the third metal wire 8 vertical. The first metal wire 5, the second metal wire 7, and the third metal wire 8 form a Z-shaped metal wire 3. The first metal wire 5, the second metal wire 7, and the third metal wire 8 do not need to be completely horizontal or vertical; their angles can be adjusted as needed. Since the first displacement roller 1 and the second displacement roller 2 do not cause a change in the circumference of the metal wire 3 when they move synchronously, they will not affect the normal operation of the entire equipment.
[0035] The fixing roller assembly also includes a second fixing roller 9 and a third fixing roller 10. The second fixing roller 9 is positioned above the first fixing roller 6, and the third fixing roller 10 is positioned above the wire collecting roller 4. The second fixing roller 9 and the third fixing roller 10 are used to control the winding direction of the metal wire 3. The wire collecting roller 4 is provided with a wire hook 11 for fixing the metal wire 3. The end of the metal wire is connected to a flexible wire 12, which is used to assist the metal wire 3 in passing through the hole to be cut. The upper part of the wire hook 11 is a flared opening 13, and the lower part of the wire hook 11 is a vertical slit 14. The flexible wire 12 first slides into the vertical slit 14 through the flared opening 13, and the vertical slit 14 holds the knot 15 of the flexible wire 12, thereby fixing the flexible wire 12.
[0036] like Figure 5 , Figure 6 As shown, Embodiment 2: A metal wire cutting machine suitable for dual wire-collecting rollers 4. A novel metal wire cutting machine includes a motor, a control system, and a wire-collecting roller 4 assembly. The motor drives the wire-collecting roller 4 to rotate, and the control system controls the rotation speed and direction of the motor. A metal wire 3 is sleeved on the outside of the wire-collecting roller 4 assembly. The wire-collecting roller 4 assembly includes a first wire-collecting roller 41 and a second wire-collecting roller 42. The metal wire 3 can move from the first wire-collecting roller 41 to the second wire-collecting roller 42, or vice versa. A cutting area is formed between the first wire-collecting roller 41 and the second wire-collecting roller 42. A first displacement roller 1 and a second displacement roller 2 are also provided within the cutting area, and the first displacement roller 1 and the second displacement roller 2 move back and forth laterally within the cutting area. The first displacement roller 1 and the second displacement roller 2 move synchronously laterally, with the first displacement roller 1 positioned above the second displacement roller 2. The first displacement roller 1 and the first wire collecting roller 41 are connected by a first metal wire 5, which is positioned above both the first displacement roller 1 and the first wire collecting roller 41. The second displacement roller 2 and the second wire collecting roller 42 are connected by a second metal wire 7, which is positioned below both the second displacement roller 2 and the second wire collecting roller 42. The first displacement roller 1 and the second displacement roller 2 are connected by a third metal wire 8, which is positioned on opposite sides of the first displacement roller 1 and the second displacement roller 2. The first metal wire 5, the second metal wire 7, and the third metal wire 8 form a Z-shaped metal wire 3. The movement of the first displacement roller 1 and the second displacement roller 2 does not cause any changes in the overall shape of the metal wire 3, and the first displacement roller 1 and the second displacement roller 2 do not affect the rotation of the wire collecting roller 4 assembly. The upper ends of the first displacement roller 1 and the first wire collecting roller 41 are at the same height, so that the first metal wire 5 is in a horizontal direction. The lower ends of the second displacement roller 2 and the first fixed roller are at the same height, so that the second metal wire 7 is in a horizontal direction. The opposite sides of the first displacement roller 1 and the second displacement roller 2 are on the same vertical line, so that the third metal wire 8 is in a vertical direction, and the vertical metal wire 3 is easier to cut. Both the first wire collecting roller 41 and the second wire collecting roller 42 are provided with wire hooks 11 for fixing the metal wire 3. The upper part of the wire hook 11 is a flared opening 13, and the lower part of the wire hook 11 is a vertical slit 14.
[0037] Furthermore, this invention also solves the problem of threading wires when drilling holes in parts. Specific embodiments are as follows:
[0038] like Figures 3-6As shown, a metal wire 3 cutting machine capable of cutting internal holes includes a motor, a control system, a wire collecting roller 4, and a fixed roller assembly. The metal wire 3 is sleeved on the outside of the wire collecting roller 4 and the fixed roller assembly. The fixed roller assembly includes a first fixed roller 6. The wire collecting roller 4 and the first fixed roller 6 form a cutting area. A first displacement roller 1 and a second displacement roller 2 are also provided in the cutting area. The first displacement roller 1 and the second displacement roller 2 move synchronously laterally. The first displacement roller 1 is positioned above the second displacement roller 2. The end of the metal wire 3 is connected to a flexible wire 12. The machine also includes a hook 17 and a clamping device 18. The hook 17 is used to lift the flexible wire 12 and pass it through the hole to be cut in the part. The clamping device 18 has an open state and a clamping state. The clamping device 18 can be a clamping arm, which is driven by a motor to clamp or open. The outer end of the flexible wire 12 is provided with a knot 15. The hook 16 of the hook 17 hooks the knot 15 to prevent the flexible wire 12 from detaching from the hook 17. The wire collecting roller 4 is equipped with a wire hook 11. The upper part of the wire hook 11 is a flared opening 13, and the lower part of the wire hook 11 is a vertical slit 14. The knot 15 cannot pass through the vertical slit 14, thus achieving a fixing effect. The hook 17 is elongated, with the hook part located at the lower end of the hook 17.
[0039] A method for cutting internal holes with a metal wire cutter includes the following steps:
[0040] Step 1: Rotate the wire collecting roller 4, and the soft wire 12 at the end of the metal wire 3 at the second displacement roller 2 will disengage from the wire collecting roller 4;
[0041] Step 2: The clamping device 18 is in the clamping state, and the clamping device 18 fixes the free end of the flexible wire 12. The other end of the flexible wire 12 is wrapped around the outside of the second displacement gear. The wire collecting roller 4 is rotated so that both the metal wire 3 and the flexible wire 12 are in a taut state.
[0042] Step 3: First, drill holes at the locations where the inner hole needs to be cut to form the wire threading holes to be cut;
[0043] Step 4: The hook 17 passes through the hole to be cut from top to bottom. The hook 17 is aligned with the soft wire 12 and the soft wire 12 is lifted upwards. The clamping device 18 is opened, and the soft wire 12 is released from the clamping device 18. The soft wire 12 passes through the hole to be cut along with the hook 17. The size of the hook part 16 of the hook 17 is smaller than the size of the knot 15 of the soft wire 12. The hook part 16 hooks the knot 15 and lifts the soft wire 12 upwards. The soft wire 12 will not be released from the hook part 16.
[0044] Step 5: Locate the free end of the flexible wire 12 and fix it to the wire collecting roller 4. As the wire collecting roller 4 rotates, the metal wire 3 enters the hole to be cut. The outer end of the flexible wire 12 is provided with a knot 15, and the wire collecting roller 4 is provided with a wire hook 11. The upper part of the wire hook 11 is a flared opening 13, and the lower part of the wire hook 11 is a vertical slit 14. The flexible wire 12 is fixed to the wire collecting roller 4 through the knot 15 and the wire hook 11, making it easier to fix the flexible wire 12.
[0045] Step 6: The hook 17 moves the soft line 12 above the wire collecting roller 4. The hook 17 moves down aligned with the wire hook 11. The soft line 12 enters the vertical gap 14, and the knot 15 of the soft line 12 is released from the hook 17. The soft line 12 is fixed by the wire hook 11.
[0046] Step 7: Rotate the wire collecting roller 4, and the metal wire 3 moves to cut the hole to be cut.
[0047] The electric nail clipper with a filer provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are only for the purpose of helping to understand the invention and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims
1. A wire cutting machine capable of cutting internal holes, comprising a motor, a control system, a wire collecting roller and a fixing roller assembly, wherein the metal wire is sleeved on the outside of the wire collecting roller and the fixing roller assembly, characterized in that... The fixed roller assembly includes a first fixed roller, a wire-collecting roller, and a cutting area formed between the first fixed roller and the wire-collecting roller. A first displacement roller and a second displacement roller are also provided within the cutting area. The first and second displacement rollers move synchronously laterally. The first displacement roller is positioned above the second displacement roller. A flexible wire is connected to the end of the metal wire. The assembly also includes a hook and a clamping device. The hook is used to lift the flexible wire and pass it through the hole to be cut in the part. The clamping device has an open state and a clamped state. A knot is provided at the outer end of the flexible wire. A wire-collecting roller is provided with a wire hook. The upper part of the wire hook has a flared opening, and the lower part of the wire hook has a vertical slit.
2. The wire cutting machine for cutting internal holes according to claim 1, characterized in that... The hook is elongated, with the hook portion located at the lower end of the hook.
3. A wire cutting machine capable of cutting internal holes according to claim 1, characterized in that... The first displacement roller and the wire collecting roller are connected by a first metal wire, which is positioned above the first displacement roller and the wire collecting roller; the second displacement roller and the first fixed roller are connected by a second metal wire, which is positioned below the second displacement roller and the first fixed roller; the first displacement roller and the second displacement roller are connected by a third metal wire, which is positioned on opposite sides of the first displacement roller and the second displacement roller; the first metal wire, the second metal wire, and the third metal wire form a Z-shaped metal wire.
4. A wire cutting machine capable of cutting internal holes according to claim 3, characterized in that... The upper ends of the first displacement roller and the first wire collecting roller are at the same height, so that the first metal wire is in the horizontal direction.
5. A wire cutting machine capable of cutting internal holes according to claim 3, characterized in that... The lower ends of the second displacement roller and the first fixed roller are at the same height, so that the second metal wire is in the horizontal direction.
6. A wire cutting machine capable of cutting internal holes according to claim 3, characterized in that... The first and second displacement rollers are positioned on opposite sides of the same vertical line, so that the third metal wire is in the vertical direction.
7. A wire cutting machine capable of cutting internal holes according to claim 1, characterized in that... The wire-collecting rollers include a first wire-collecting roller and a second wire-collecting roller, forming a cutting area between them. A first displacement roller and a second displacement roller are also arranged within the cutting area. The first displacement roller and the second displacement roller move synchronously laterally, with the first displacement roller positioned above the second displacement roller. The first displacement roller and the first wire-collecting roller are connected by a first metal wire, which is positioned above both. The second displacement roller and the second wire-collecting roller are connected by a second metal wire, which is positioned below both. The first displacement roller and the second displacement roller are connected by a third metal wire, which is positioned on opposite sides of both. The first metal wire, the second metal wire, and the third metal wire form a Z-shaped metal wire.
8. A method for cutting internal holes using a wire cutting machine according to any one of claims 1-7, characterized in that... Includes the following steps: Step 1: Rotate the wire collecting roller, and the soft wire at the end of the metal wire at the second displacement roller will detach from the wire collecting roller; Step 2: Fix the free end of the flexible wire by clamping it with the clamping device, and wrap the other end of the flexible wire around the outside of the second displacement roller. Rotate the wire collecting roller to make both the metal wire and the flexible wire taut. Step 3: Drill holes at the locations where the inner holes of the parts need to be cut to form the holes to be cut; Step 4: Pass the hook through the hole to be cut from top to bottom, align the hook with the wire, lift the wire upwards, the clamping device will open, the wire will detach from the clamping device, and the wire will pass through the hole to be cut along with the hook; the size of the hook part is smaller than the size of the knot of the wire, the hook part hooks the knot and lifts the wire upwards, the wire will not detach from the hook part. Step 5: Locate the free end of the wire and fix it to the wire collecting roller. As the wire collecting roller rotates, the metal wire enters the hole to be cut. Step 6: The hook, carrying the soft line, moves above the wire collecting roller. The hook is aligned with the wire hook and moves down, allowing the soft line to enter the vertical gap. The knot of the soft line comes off the hook and is secured by the wire hook. Step 7: Rotate the wire collecting roller to move the metal wire and cut the hole to be cut.