A precision-positioning wire cutting device

Abstract

This utility model relates to the field of wire cutting technology, specifically a precision-positioning wire cutting device, comprising a base with a frame fixedly connected to the center of its left top end. A lifting frame is adjustable on the front of the frame via a lifting mechanism. A spool is located at the top left of the lifting frame, and a winding spool is rotatably mounted on the spool via a drive mechanism. A wheel frame is located at the top right of the lifting frame, and a moving mechanism is provided between the wheel frame, the spool, and the lifting frame. This utility model utilizes the self-locking characteristic of a worm gear mechanism in conjunction with the transmission of a reciprocating lead screw to achieve a constant tension in the metal wire during cutting, solving the problem of cutting path deviation caused by wire slack in traditional wire cutting equipment, and realizing sub-millimeter level precision positioning and cutting.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting technology, specifically to a wire cutting device with precise positioning. Background Technology

[0002] Wire EDM is a widely used technology in the manufacturing industry. It mainly involves the process of cutting metal or other hard materials. Wire EDM equipment is usually spark cutting, and precise positioning wire EDM equipment is used in this process.

[0003] As disclosed in the patent announcement CN221158884U, a precision-positioning wire cutting device includes a base, a lifting seat fixedly installed on one side of the base, a sliding groove on the top of the base, and a lifting and changing structure on the top of the base. The lifting and changing structure includes a lifting box and three wire clamping cylinders. A sliding block is slidably installed inside the lifting box, and two lead screws are rotatably installed inside the lifting box, both of which are threadedly connected to the sliding block. By adopting the above technical solution, the beneficial effects of this utility model are: significantly shortening the preparation time of the precision-positioning wire cutting device, thereby improving the working efficiency of the precision-positioning wire cutting device.

[0004] Although the aforementioned patent includes a rotating wheel, the metal wire is only fixed by the wire clamp when the wheel rotates freely, which cannot maintain a constant tension. During the cutting process, the metal wire may loosen due to vibration or resistance, causing the cutting path to deviate, thus making it impossible to accurately position during cutting. Utility Model Content

[0005] The purpose of this invention is to provide a wire cutting device with precise positioning to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A precision-positioning wire cutting device, including The base has a frame fixedly connected to the top center of its left side, and a lifting frame is adjustable on the front of the frame via a lifting mechanism. A spool is located at the top left side of the lifting frame, and a winding drum is rotatably mounted on the spool via a drive mechanism. A wheel frame is located at the top right side of the lifting frame, and a moving mechanism is provided between the wheel frame and the cylinder frame and the lifting frame.

[0007] Preferably, the lifting mechanism includes an electric push rod vertically fixedly connected to the middle of the top of the frame, and a fixed block slidably connected to the middle of the inner side of the frame. The output shaft of the electric push rod is fixedly connected to the fixed block, and the left side of the lifting frame is fixedly connected to the right side of the fixed block. Preferably, the drive mechanism includes a transmission housing fixedly connected to the outside of the left side of the drum frame, and a second motor fixedly connected to the top of the outside of one side of the transmission housing. The transmission housing is provided with a worm gear mechanism. The middle part of the drum frame is rotatably connected to the winding drum through a bearing. The output shaft of the second motor is connected to the worm of the worm gear mechanism, and the rotating shaft of the winding drum is connected to the worm wheel of the worm gear mechanism. Preferably, the moving mechanism includes shaft frames fixedly connected to the four corners of the top of the lifting frame, a reciprocating screw is rotatably connected between the two shaft frames on the left side through bearings, a motor is fixedly connected to the outside of the left shaft frame, the output shaft of the motor is fixedly connected to the reciprocating screw, and a guide rod is fixedly connected between the two shaft frames on the right side. Preferably, the bottom left side of the cylinder frame and wheel frame is threaded to a reciprocating lead screw, and the right side is slidably engaged with a guide rod. An clearance groove is provided in the middle of the lifting frame. The wheel frame is rotatably connected to two parallel guide wheels through bearings. Top frames are fixedly connected to both outer ends of the lifting frame, and a guide wheel is rotatably connected between the two top frames through bearings. Preferably, a guide groove is provided at the top center of the base, a guide seat is slidably connected inside the guide groove, a fixed sleeve is fixedly connected to the top of the guide seat, and a locking screw is threadedly connected to one side of the fixed sleeve.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This precision-positioning wire EDM equipment utilizes the self-locking characteristics of a worm gear mechanism in conjunction with the transmission of a reciprocating lead screw to maintain a constant tension in the metal wire during the cutting process. This solves the problem of cutting path deviation caused by metal wire slack in traditional wire EDM equipment, achieving sub-millimeter level precision positioning and cutting.

[0009] This precision-positioning wire cutting equipment, through the controllable release mechanism of the wire reel and the quick-fixing cooperation of the locking screw, achieves the effect of facilitating the replacement and adjustment of metal wires, significantly improving equipment maintenance efficiency and operational continuity. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall main structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the lifting frame of this utility model; Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 4 For the present utility model Figure 2 Enlarged diagram of point B in the middle.

[0011] In the diagram: 1. Base; 2. Frame; 3. Lifting frame; 4. Drum frame; 5. Winding drum; 6. Wheel frame; 7. Electric push rod; 8. Fixing block; 9. Transmission housing; 10. Motor II; 12. Shaft frame; 13. Reciprocating lead screw; 14. Motor I; 15. Guide rod; 16. Clearance groove; 17. Wire guide wheel; 18. Top frame; 19. Wire guide wheel; 20. Guide groove; 21. Guide seat; 22. Fixing sleeve; 23. Locking screw. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1-4 As shown, this utility model provides a technical solution: A precision-positioning wire cutting device includes a base 1, with a frame 2 fixedly connected to the middle of its left top end. A lifting frame 3 is adjustablely mounted on the front of the frame 2 via a lifting mechanism. The lifting mechanism includes an electric push rod 7 vertically fixedly connected to the middle of the top end of the frame 2, and a fixed block 8 slidably connected to the middle of the inner side of the frame 2. The output shaft of the electric push rod 7 is fixedly connected to the fixed block 8. The left side of the lifting frame 3 is fixedly connected to the right side of the fixed block 8. A drum frame 4 is located at the top left end of the lifting frame 3. A winding drum 5 is rotatably mounted on the drum frame 4 via a drive mechanism. The drive mechanism includes a transmission housing 9 fixedly connected to the outside of the left side of the drum frame 4, and a second motor 10 fixedly connected to the top of the outside of one side of the transmission housing 9. A worm gear mechanism is installed inside the transmission housing 9. The winding drum 5 is rotatably connected to the middle of the drum frame 4 via a bearing. The output shaft of the second motor 10 is connected to the worm of the worm gear mechanism, and the rotating shaft of the winding drum 5 is connected to the worm wheel of the worm gear mechanism. A wheel frame 6 is located at the top right end of the lifting frame 3. A moving mechanism is provided between the cylinder frame 4 and the lifting frame 3. The moving mechanism includes shaft frames 12 fixedly connected to the four corners of the top of the lifting frame 3. A reciprocating screw 13 is rotatably connected between the two left shaft frames 12 via bearings. A motor 14 is fixedly connected to the outside of the left shaft frame 12. The output shaft of the motor 14 is fixedly connected to the reciprocating screw 13. A guide rod 15 is fixedly connected between the two right shaft frames 12. The bottom left end of the cylinder frame 4 and the wheel frame 6 is threadedly connected to the reciprocating screw 13, and the right end slides with the guide rod 15. In conjunction with this, a clearance groove 16 is provided in the middle of the lifting frame 3, and two parallel guide wheels 17 are rotatably connected inside the wheel frame 6 via bearings. Top frames 18 are fixedly connected to both ends of the outer sides of the lifting frame 3, and a guide wheel 19 is rotatably connected between the two top frames 18 via bearings. A guide groove 20 is provided in the middle of the top of the base 1, and a guide seat 21 is slidably connected inside the guide groove 20. A fixing sleeve 22 is fixedly connected to the top of the guide seat 21, and a locking screw 23 is threadedly connected to one side of the fixing sleeve 22. In this embodiment, the self-locking characteristic of the worm gear mechanism is used in conjunction with the transmission of the reciprocating screw 13 to achieve the effect of maintaining a constant tension in the metal wire during the cutting process. This solves the problem of cutting path deviation caused by metal wire slack in traditional wire cutting equipment and achieves sub-millimeter level precise positioning and cutting.

[0014] Furthermore, the controllable release mechanism of the reel 5, combined with the quick-locking mechanism of the locking screw 23, facilitates the replacement and adjustment of the metal wire, significantly improving equipment maintenance efficiency and operational continuity.

[0015] Working principle: During installation, the metal wire is first released from the reel 5, then slidably connected to the upper end of the guide wheel 19, and extends downward after passing through the two guide wheels 17 inside the wheel frame 6, finally fitting into the fixing sleeve 22. The locking screw 23 is then used to tighten and fix it, at which point the rotation of the reel 5 stops, and the metal wire is in a taut state. During cutting, the guide seat 21 is connected to the high-voltage positive terminal of the external power supply, energizing the metal wire. The workpiece to be cut is connected to the high-voltage negative terminal, and the motor 14 is started to drive the reciprocating screw 13 to rotate, causing the reel frame 4 to... The wheel frames 6 move towards each other. Due to the self-locking characteristic of the worm gear mechanism, the winding drum 5 remains fixed, and the metal wire remains taut throughout the movement. At the same time, the metal wire is energized to generate an electric spark, which, together with the position adjustment of the guide seat 21 within the guide groove 20, enables precise cutting of the workpiece. When the metal wire needs to be replenished due to loss, the starting motor 10 drives the winding drum 5 to release an appropriate amount of metal wire through the worm gear mechanism, and then the fixing sleeve 22 is locked again to maintain working tension, ensuring the continuity and stability of the cutting process.

[0016] It should be noted that a dustproof telescopic sleeve can be movably fitted on the outside of the reciprocating screw 13 and fixedly connected to the cylinder frame 4 and the wheel frame 6 to protect the reciprocating screw 13.

[0017] In the specific implementation of this technical solution, the worm gear mechanism can be configured with conventional reduction transmission devices in the prior art. Although such transmission mechanisms are not described in detail in the technical solution, they are reduction devices that can be conventionally selected by those skilled in the art based on the actual transmission ratio and self-locking requirements. Their module matching and transmission efficiency follow well-known technologies in the field of mechanical transmission and do not affect the implementation of the core innovation of this solution. In practical applications, the worm gear mechanism is mainly used to achieve unidirectional self-locking and precision transmission of the winding drum 5, but its specific type (such as single-start or multi-start worm) and connection method (such as flange connection or bushing connection) can be adjusted according to production requirements, all of which fall within the reasonable extension scope of this technical solution.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A precision positioning wire cutting apparatus, characterized by: include The base (1) has a frame (2) fixedly connected to the top center of its left side. The front of the frame (2) is equipped with a lifting frame (3) through a lifting mechanism. A spool (4) is located at the top left side of the lifting frame (3), and a winding drum (5) is rotatably mounted on the spool (4) via a drive mechanism. A wheel frame (6) is located at the top right side of the lifting frame (3), and a moving mechanism is provided between the wheel frame (6) and the cylinder frame (4) and the lifting frame (3).

2. A precisely positioned wire cutting apparatus as claimed in claim 1, wherein: The lifting mechanism includes an electric push rod (7) that is vertically fixed to the middle of the top of the frame (2) and a fixed block (8) that is slidably connected to the middle of the inner side of the frame (2). The output shaft of the electric push rod (7) is fixedly connected to the fixed block (8), and the left side of the lifting frame (3) is fixedly connected to the right side of the fixed block (8).

3. The precisely positioned wire cutting apparatus of claim 1, wherein: The drive mechanism includes a transmission housing (9) fixedly connected to the outside of the left side of the spool (4), and a second motor (10) fixedly connected to the top of the outside of one side of the transmission housing (9). The transmission housing (9) is equipped with a worm gear mechanism. The middle part of the spool (4) is rotatably connected to the winding drum (5) through a bearing. The output shaft of the second motor (10) is connected to the worm of the worm gear mechanism, and the rotating shaft of the winding drum (5) is connected to the worm wheel of the worm gear mechanism.

4. The precision positioned wire cutting apparatus of claim 1, wherein: The moving mechanism includes shaft frames (12) fixedly connected to the four corners of the top of the lifting frame (3). A reciprocating screw (13) is rotatably connected between the two shaft frames (12) on the left side through a bearing. A motor (14) is fixedly connected to the outside of the shaft frame (12) on the left side. The output shaft of the motor (14) is fixedly connected to the reciprocating screw (13). A guide rod (15) is fixedly connected between the two shaft frames (12) on the right side.

5. A precisely positioned wire cutting apparatus as claimed in claim 4, wherein: The bottom left side of the tube frame (4) and wheel frame (6) is threaded to the reciprocating lead screw (13), and the right side is slidably engaged with the guide rod (15). A clearance groove (16) is provided in the middle of the lifting frame (3). The wheel frame (6) is rotatably connected to two parallel guide wheels (17) through bearings. Top frames (18) are fixedly connected to both outer ends of the lifting frame (3). A guide wheel (19) is rotatably connected between the two top frames (18) through bearings.

6. The precision positioned wire cutting apparatus of claim 1, wherein: The base (1) has a guide groove (20) at the top center. A guide seat (21) is slidably connected inside the guide groove (20). A fixing sleeve (22) is fixedly connected to the top of the guide seat (21). A locking screw (23) is threadedly connected to one side of the fixing sleeve (22).

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