Linear cutting machine tool with adjustable coil holder

Abstract

The utility model discloses a wire cutting machine tool with an adjustable coil holder, which belongs to the technical field of cutting machine tools and comprises a machine tool frame and a driving cover fixedly mounted on the machine tool frame, a wire storage cylinder is rotatably mounted in the driving cover, a primary guide wheel is mounted in the driving cover, and a secondary guide wheel is mounted in the primary guide wheel. Movable wire frames are arranged on the upper side and the lower side beside the driving cover, wire guide grooves are symmetrically formed in the two sides of the lower surface of each movable wire frame, second-stage guide wheels are installed on the two sides in each movable wire frame, third-stage guide wheels are installed outside the movable wire frames, and embedded grooves are formed in the first-stage guide wheels, the second-stage guide wheels and the third-stage guide wheels; electrode wires are connected into embedded grooves of the first-stage guide wheel, the second-stage guide wheel and the third-stage guide wheel in a clamped mode and wound around the outer portion of the wire storage cylinder. The driving cover is provided with an adjusting mechanism for adjusting and controlling the distance between the two groups of movable wire frames; the wire moving tension of the electrode wire can be regulated and controlled through the adjusting mechanism, and stable wire moving cutting of the electrode wire is kept.

Description

Technical Field

[0001] This utility model relates to the field of cutting machine tool technology, specifically to a wire cutting machine tool with an adjustable wire frame. Background Technology

[0002] Wire EDM machines utilize the principle of electrical discharge to process metals. The machine body typically consists of a bed, a coordinate worktable, and a wire feeding mechanism. It achieves precision machining by generating high-frequency electrical sparks on the workpiece surface to corrode and cut the material.

[0003] For example, patent CN216421334U discloses an EDM CNC wire cutting machine tool with a waste collection function, including a waste collection mechanism, a clamping mechanism, and an industrial iron block. The clamping mechanism is set on the waste collection mechanism, and the industrial iron block is set on the waste collection mechanism. The waste collection mechanism includes a machine tool housing, a fixed base plate is fixedly connected to the bottom of the machine tool housing, an electric push rod is fixedly connected to the left side wall of the machine tool housing, a movable push plate is fixedly connected to the right end of the electric push rod, a discharge frame is fixedly connected to the right side of the machine tool housing, a baffle plate is movably connected to the inner side of the discharge frame, a receiving box is movably connected to the top of the machine tool housing, and a fixed frame is fixedly connected to the top of the machine tool housing. This EDM CNC wire cutting machine... The bed achieves the purpose of waste collection in CNC wire EDM machines, avoiding the accumulation of large amounts of waste during workpiece cutting. Electrode wires are prone to loosening after prolonged wire cutting operation. If the electrode wire is loose or too tight, it can lead to wire breakage. Furthermore, high-speed reciprocating wire EDM machines exhibit a "single-sided wire loosening" phenomenon, affecting machining accuracy and stability. In addition, radial runout of the electrode wire on the guide rollers and wire drum can cause vibration in the wire frame, reducing workpiece accuracy, increasing surface roughness, and potentially leading to wire breakage. Strong resonance can also shorten the electrode wire's lifespan and may cause wear on machine tool components.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on existing wire EDM machines. Utility Model Content

[0005] The purpose of this utility model is to provide a wire EDM machine tool with an adjustable wire frame, so as to solve the problem mentioned in the background art that the electrode wire is prone to loosening after long-term wire cutting operation. If the electrode wire is loose or too tight, it will lead to wire breakage. In addition, there is a "single-sided wire loosening" phenomenon in high-speed reciprocating wire EDM machines, which affects the processing accuracy and stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable wire EDM machine tool, comprising a machine frame and a drive cover fixedly mounted on the machine frame, a wire storage drum rotatably mounted in the drive cover, a primary guide wheel mounted in the drive cover, and movable wire frames arranged on both the upper and lower sides of the drive cover, with wire guide grooves symmetrically opened on both sides of the lower surface of the movable wire frames, and secondary guide wheels installed on both sides inside the movable wire frames, and tertiary guide wheels installed outside the movable wire frames, each of the primary, secondary, and tertiary guide wheels having an embedded groove, an electrode wire engaging in the embedded groove of the primary, secondary, and tertiary guide wheels, and the electrode wire being wound around the outside of the wire storage drum; the drive cover is provided with an adjustment mechanism for adjusting the distance between the two sets of movable wire frames.

[0007] Preferably, the adjustment mechanism includes a slide cylinder fixed outside the drive cover, a movable bracket slidably connected through the inside of the slide cylinder, and the movable bracket is fixedly installed on the movable wire frame.

[0008] Preferably, the movable bracket has a threaded groove, and a threaded rod is threadedly connected in the threaded groove. The threaded rod is symmetrically rotated and installed on the upper and lower surfaces of the drive cover.

[0009] Preferably, a support rod is obliquely connected between the movable bracket and the movable wire frame, and a buffer mechanism is provided on the support rod to buffer the vibration force of the guide wire of the movable wire frame.

[0010] Preferably, the buffer mechanism includes three sets of cylindrical rods fixed on the support and reinforcement rods, and sleeves are sleeved on the outside of the cylindrical rods; threaded columns are fixedly installed on the sleeves, and guide rods are telescopically connected to the threaded columns; a disc seat is fixedly installed on the guide rods, and the disc seat is fixedly installed on the surface of the movable wire frame.

[0011] Preferably, a movable disk is slidably sleeved on the outside of the guide rod, and a limit spring is elastically connected between the movable disk and the disk seat.

[0012] Preferably, an internally threaded cylinder is rotatably mounted on the movable disk, and the internally threaded cylinder is threaded around the outside of the threaded column.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the wire EDM machine tool with adjustable wire frame guides and feeds the electrode wire through a first-stage guide wheel, a second-stage guide wheel and a third-stage guide wheel. The electrode wire is taut and set between the upper and lower sets of movable wire frames, and the material is corroded and cut by generating electric sparks on the surface of the workpiece.

[0014] Furthermore, the drive cover is equipped with an adjustment mechanism, which includes a slide cylinder and a movable support. The movable support is controlled to move longitudinally in the slide cylinder to adjust the distance between the upper and lower sets of movable wire frames, thereby regulating the wire tension of the electrode wire and preventing the electrode wire from being overly taut or slack.

[0015] The screw rod is controlled to rotate. The screw rod is threadedly connected to the threaded groove on the moving bracket. Under the screw drive, the longitudinal movement of the moving bracket can be quickly controlled, thereby adjusting the position of the moving frame corresponding to the drive cover edge.

[0016] Furthermore, a buffer mechanism is provided on the drive cover. When the electrode wire vibrates due to radial runout during wire cutting, the vibration force is transmitted to the support and reinforcement rod. A threaded column, guide rod, disc seat, moving disc and limit spring are provided between the support and reinforcement rod and the moving wire frame. Under the elastic buffering of the limit spring, most of the vibration force can be effectively buffered, and the moving wire frame can be kept in a balanced and stable state.

[0017] Based on the magnitude of the vibration force generated during processing, the internal threaded cylinder is controlled to rotate outside the threaded column. Under the threaded transmission, the internal threaded cylinder and the moving disc move up and down, adjusting the distance between the moving disc and the disc seat, thereby regulating the elastic coefficient of the limit spring and changing the elastic buffering effect of the buffer mechanism. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the machine tool frame of this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the drive cover of this utility model.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the movable wire frame of this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the mobile support frame of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the support and reinforcement rod of this utility model.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the internally threaded cylinder of this utility model.

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the threaded column of this utility model.

[0025] In the diagram: 1. Machine tool frame; 2. Drive cover; 3. Wire storage drum; 4. First-stage guide wheel; 5. Moving wire frame; 6. Wire guide groove; 7. Second-stage guide wheel; 8. Third-stage guide wheel; 9. Embedded groove; 10. Electrode wire; 11. Slide cylinder; 12. Moving bracket; 13. Threaded groove; 14. Threaded rod; 15. Support and reinforcing rod; 16. Cylindrical rod; 17. Sleeve; 18. Threaded column; 19. Guide rod; 20. Disc seat; 21. Limiting spring; 22. Moving disc; 23. Internally threaded cylinder. Detailed Implementation

[0026] 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.

[0027] Example 1: Please refer to Figures 1-7 The present invention provides the following technical solution: a wire EDM machine tool with adjustable wire frame, comprising a machine frame 1 and a drive cover 2 fixedly mounted on the machine frame 1, a wire storage drum 3 rotatably mounted in the drive cover 2, a primary guide wheel 4 mounted in the drive cover 2, and movable wire frames 5 arranged on both the upper and lower sides of the drive cover 2, with wire guide grooves 6 symmetrically opened on both sides of the lower surface of the movable wire frames 5, and secondary guide wheels 7 installed on both sides inside the movable wire frames 5, and tertiary guide wheels 8 installed on the outside of the movable wire frames 5, with embedded grooves 9 opened on the primary guide wheel 4, secondary guide wheel 7 and tertiary guide wheel 8, and electrode wires 10 engaged in the embedded grooves 9 of the primary guide wheel 4, secondary guide wheel 7 and tertiary guide wheel 8, and the electrode wires 10 wound around the outside of the wire storage drum 3; the drive cover 2 is provided with an adjustment mechanism for adjusting the distance between the two sets of movable wire frames 5.

[0028] The adjustment mechanism includes a slide cylinder 11 fixed outside the drive cover 2, and a movable bracket 12 is slidably connected through the inside of the slide cylinder 11. The movable bracket 12 is fixedly installed on the movable wire frame 5.

[0029] The movable bracket 12 has a threaded groove 13, and a threaded rod 14 is threadedly connected in the threaded groove 13. The threaded rod 14 is symmetrically rotated and installed on the upper and lower surfaces of the drive cover 2.

[0030] The machining frame is set on the machine tool frame 1 by a fixture. The motor on the drive cover 2 controls the rotation of the wire storage drum 3. The electrode wire 10 wound on the wire storage drum 3 moves between the upper and lower sets of moving wire frames 5 along the transmission direction of the first-stage guide wheel 4, the second-stage guide wheel 7 and the third-stage guide wheel 8. During the wire feeding process, the electrode wire 10 corrodes and cuts the material on the workpiece surface by generating electric sparks, thus completing the wire cutting of the workpiece.

[0031] The electrode wire 10 is prone to loosening during long-term wire cutting. The operator needs to adjust the distance between the upper and lower movable wire frames 5 to adjust the tension of the electrode wire 10 and ensure that the electrode wire 10 can complete the cutting process safely and stably. The threaded rod 14 is controlled to rotate. The threaded rod 14 is threadedly connected to the threaded groove 13 on the movable support 12. Under the threaded transmission, the movable support 12 is driven to move longitudinally. The movable support 12 slides longitudinally through the inside of the slide cylinder 11, thereby achieving the purpose of adjusting the distance between the upper and lower movable supports 12.

[0032] Example 2: Based on Example 1, a buffer mechanism is also disclosed, the specific structure of which is as follows: A support and reinforcement rod 15 is obliquely connected between the movable bracket 12 and the movable wire frame 5, and a buffer mechanism for buffering the vibration force of the guide wire of the movable wire frame 5 is provided on the support and reinforcement rod 15; the buffer mechanism includes three sets of cylindrical rods 16 fixed on the support and reinforcement rod 15, and a sleeve 17 is sleeved on the outside of the cylindrical rods 16; a threaded column 18 is fixedly installed on the sleeve 17, and a guide rod 19 is telescopically connected to the threaded column 18; a disc seat 20 is fixedly installed on the guide rod 19, and the disc seat 20 is fixedly installed on the surface of the movable wire frame 5.

[0033] The guide rod 19 is externally slidably fitted with a movable disk 22, and a limit spring 21 is elastically connected between the movable disk 22 and the disk seat 20.

[0034] An internally threaded cylinder 23 is rotatably mounted on the movable disk 22, and the internally threaded cylinder 23 is threadedly sleeved on the outside of the threaded column 18.

[0035] If radial runout occurs on the first-stage guide roller 4, the second-stage guide roller 7, the third-stage guide roller 8 and the wire storage drum 3 when the electrode wire 10 is being fed, the moving wire frame 5 will be affected and vibrate. The vibration force on the moving wire frame 5 will be transmitted to the support and reinforcement rod 15. Multiple buffer mechanisms are equally spaced on the support and reinforcement rod 15, and the buffer mechanisms are distributed in a gradient state between the support and reinforcement rod 15 and the moving wire frame 5.

[0036] The vibration force on the support and reinforcement rod 15 is transmitted to the threaded column 18, guide rod 19 and disc seat 20. The limiting spring 21 connected between the disc seat 20 and the moving disc 22 is elastically adjusted to effectively buffer most of the vibration force and maintain the stability of the moving wire frame 5. In addition, the elastic coefficient of the limiting spring 21 can be adjusted according to the wire cutting process to control the rotation of the internal threaded cylinder 23 sleeved on the outside of the threaded column 18. Under the threaded transmission, the moving disc 22 is pushed to move longitudinally, thereby adjusting the distance between the moving disc 22 and the disc seat 20. After the elastic coefficient of the limiting spring 21 connected between the moving disc 22 and the disc seat 20 changes, its vibration buffering effect is significantly changed, which can more effectively buffer the vibration force and maintain the stable use of the moving wire frame 5.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wire EDM machine with an adjustable wire frame, comprising a machine frame (1) and a drive cover (2) fixedly mounted on the machine frame (1), wherein a wire storage spool (3) is rotatably mounted in the drive cover (2), characterized in that: The drive cover (2) is equipped with a first-stage guide wheel (4), and a movable wire frame (5) is provided on both the upper and lower sides of the drive cover (2). The lower surface of the movable wire frame (5) is symmetrically provided with wire guide grooves (6) on both sides. The inner sides of the movable wire frame (5) are equipped with second-stage guide wheels (7), and the outer side of the movable wire frame (5) is equipped with third-stage guide wheels (8). The first-stage guide wheel (4), the second-stage guide wheel (7) and the third-stage guide wheel (8) are all provided with embedded grooves (9). Electrode wires (10) are engaged in the embedded grooves (9) of the first-stage guide wheel (4), the second-stage guide wheel (7) and the third-stage guide wheel (8), and the electrode wires (10) are wound around the outside of the wire storage cylinder (3). The drive cover (2) is provided with an adjustment mechanism for regulating the distance between the two sets of moving wire frames (5).

2. The wire EDM machine tool with adjustable wire frame according to claim 1, characterized in that: The adjustment mechanism includes a slide cylinder (11) fixed outside the drive cover (2), and a movable bracket (12) is slidably connected through the inside of the slide cylinder (11), and the movable bracket (12) is fixedly installed on the movable wire frame (5).

3. The wire EDM machine tool with adjustable wire frame according to claim 2, characterized in that: The movable bracket (12) has a threaded groove (13) and a threaded rod (14) is threadedly connected in the threaded groove (13). The threaded rod (14) is symmetrically rotated and installed on the upper and lower surfaces of the drive cover (2).

4. The wire EDM machine tool with adjustable wire frame according to claim 2, characterized in that: The movable bracket (12) and the movable wire frame (5) are obliquely connected by a support and reinforcement rod (15), and a buffer mechanism for buffering the vibration force of the guide wire of the movable wire frame (5) is provided on the support and reinforcement rod (15).

5. The wire EDM machine tool with adjustable wire frame according to claim 4, characterized in that: The buffer mechanism includes three sets of cylindrical rods (16) fixed on the support and reinforcement rod (15), and sleeves (17) are sleeved on the outside of the cylindrical rods (16). A threaded post (18) is fixedly installed on the sleeve (17), and a guide rod (19) is telescopically connected to the threaded post (18). A disc seat (20) is fixedly installed on the guide rod (19), and the disc seat (20) is fixedly installed on the surface of the movable wire frame (5).

6. The wire EDM machine tool with adjustable wire frame according to claim 5, characterized in that: The guide rod (19) is slidably sleeved with a movable disk (22), and a limit spring (21) is elastically connected between the movable disk (22) and the disk seat (20).

7. A wire EDM machine tool with an adjustable wire frame according to claim 6, characterized in that: An internally threaded cylinder (23) is rotatably mounted on the movable disk (22), and the internally threaded cylinder (23) is threaded around the outside of the threaded column (18).

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