Vertical linear cutting machine tool
By using a wire tightening mechanism of driving motor, turntable and metal roller in a vertical wire cutting machine tool, combined with the one-way locking of elastic ratchets, the cutting instability caused by electrode wire slack is solved, and the constant tension of cutting metal wire is achieved Tightening and full-process tightening improves the stability and continuity of wire cutting.
Patent Information
- Application Number
- CN202421156326.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-25
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-25
AI Technical Summary
During long-term wire cutting, the tensioned electrode wire is prone to relax, resulting in the inability to achieve continuous cutting processing, and the stability needs to be improved.
A vertical wire cutting machine tool is designed, using a wire tightening mechanism composed of a driving motor, a turntable and a metal roller. Through constant output torque and unidirectional locking of elastic ratchets, it ensures constant tension and full tightening of the cutting wire. .
Constant tensioning and full tightening of the cutting wire are achieved, the stability and continuity of wire cutting are improved, and the continuity and efficiency of the cutting process are ensured.
Smart Images
Figure CN222448604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wire cutting machine tools, in particular to a vertical wire cutting machine tool. Background Art
[0002] Wire cutting machine tool processing is a branch of electrospark machining. It is a process method that directly uses electric sparks for processing. It uses a moving wire (electrode wire) as a tool electrode to cut the workpiece, so it is called wire cutting processing. In wire cutting processing, the relative movement of the workpiece and the electrode wire is realized by digital control, so it is also called CNC electrospark wire cutting processing, or wire cutting processing for short.
[0003] During the long-term cutting process, the tensioned electrode wire is easy to relax. When it reaches a certain degree of relaxation, it is even easy to slip off the guide wheels, making it impossible to achieve continuous cutting processing. The stability of wire cutting needs to be improved. Utility Model Content
[0004] The utility model aims to provide a vertical wire cutting machine tool.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The invention comprises a bed, wherein a wire conveying drum, a column and a workpiece rack are fixedly installed on the top wall of the bed, a horizontal upper wire rack and a lower wire rack are fixedly installed on the outer wall of the column, a cutting wire is wound around the wire conveying drum, and the cutting wire passes through the upper wire rack, the workpiece rack and the lower wire rack in sequence and returns to the wire conveying drum in a closed loop, a wire tightening mechanism is fixedly installed on the outer wall of the column, the wire tightening mechanism comprises a turntable fixedly arranged on the outer wall of the column and rotatably connected, the turntable is equipped with a driving motor, wire rollers are arranged at intervals in the diameter direction on one side of the turntable away from the column, the wire rollers are distributed on both sides of the cutting wire and are arranged to abut against each other, and an engaging groove for the cutting wire to be engaged and placed is provided around the rim of the wire roller.
[0007] By adopting the above technical solution, the driving motor is a servo motor that is started intermittently, the output torque is constant and the positioning setting is after power failure, which is responsible for providing constant tensioning force to the cutting wire. When the equipment is working, the driving motor drives the turntable to rotate, driving the wire roller to rotate and displace. During the displacement process, the wire roller will resist and twist to tighten the cutting wire. Since the torque of the driving motor is constant, the pressure of the metal rolling wheel resisting the cutting wire is constant. During the relaxation of the cutting wire, the rotation angle of the wire roller driven by the turntable will gradually increase, achieving the effect of tightening the cutting wire with constant tension. At the same time, the angle change of the wire roller can be displayed intuitively, so that the operator can clearly know the specific degree of relaxation of the cutting wire. Before the cutting wire breaks when the maximum relaxation degree is reached, the cutting wire can be replaced in time.
[0008] Furthermore, a rotating shaft passing through the column is fixedly provided on one side of the turntable, the driving motor drives the rotating shaft, a plurality of elastic ratchets distributed in oblique directions are extended from the periphery of the rotating shaft, a ratchet ring surrounding and unidirectionally locking the elastic ratchet is fixedly installed on the outer wall of the column, a ratchet groove is provided in the ratchet ring to cooperate with the elastic ratchet, and the angle of the ratchet groove is less than or equal to 90 degrees.
[0009] By adopting the above technical solution, the elastic ratchet cooperates with the ratchet groove. When the elastic ratchet moves along the direction of the ratchet groove, the elastic ratchet undergoes elastic deformation and shrinks until it enters the next ratchet groove. At this time, the turntable can rotate normally to tighten the cutting wire. When the elastic ratchet moves against the direction of the ratchet groove, the elastic ratchet will contact the wall of the ratchet groove, making the turntable unable to rotate. Since the turntable only allows one-way rotation, the turntable cannot be reversed after tightening the cutting wire. After the driving motor is powered off, the cutting wire will still remain taut, thereby achieving the effect of tightening the cutting wire throughout the entire process.
[0010] Furthermore, one end of the rotating shaft passing through the column is fixedly sleeved with a first gear, the driving motor is fixedly arranged on the outer wall of the column, and the driving motor sleeve is provided with a second gear meshing with the first gear, and the gear ratio of the first gear to the second gear is 2:1-10:1.
[0011] By adopting the above technical solution, the first gear is a large gear and the second gear is a small gear. The larger the gear ratio, the higher the precision of the drive motor driving the turntable. Due to the leverage effect, the drive motor can maintain a large torque to drive the turntable to rotate with low output power, which has a good control effect and a more precise drive.
[0012] Furthermore, the ratchet ring is rotatably connected to the outer wall of the column, a positioning block is fixedly provided on the outer wall of the column, a locking column with a threaded connection is penetrated through the positioning block, one end of the locking column is inserted into the ratchet wheel rim, and a plurality of screwing holes are penetrated through the end of the locking column away from the ratchet.
[0013] By adopting the above technical solution, when the ratchet ring is rotated and positioned, the turntable can be effectively locked to prevent the turntable from rotating in the opposite direction to loosen the cutting wire, so that the wire is always kept taut. When the cutting wire needs to be replaced, the elastic ratchet needs to be unlocked, and the locking column is twisted away from the ratchet ring under the action of the thread. After the end is completely moved out of the ratchet ring, the ratchet ring can rotate freely. At this time, the ratchet ring cannot lock the turntable, and the turntable can be rotated in the opposite direction to loosen the cutting wire for replacement.
[0014] Furthermore, an extension plate whose length is greater than the diameter of the turntable is fixedly installed on one side of the turntable close to the wire roller, and the extension plate is provided with a plurality of pairs of roller holes along the length direction. A threaded bolt is provided through the wire roller, and the threaded bolt is threadedly connected to the roller hole.
[0015] By adopting the above technical solution, the extension plate that is larger than the diameter of the turntable has a longer installation distance. The farther the installation distance of the wire roller is, the longer the tightening length of the cutting wire is. The distance between the wire rollers will also change when different roller holes are selected. The appropriate spacing distance can be selected according to actual needs to adjust the specific tightening length of the cutting wire.
[0016] In summary, the beneficial technical effects of the utility model are:
[0017] 1. It uses a driving motor, a turntable and a metal rolling wheel to produce the effect of outputting a constant pulling force to tighten the cutting wire;
[0018] 2. The elastic ratchet, ratchet ring and ratchet groove are used to prevent the turntable from reversing and tighten the cutting wire throughout the whole process;
[0019] 3. The extension plate, roller hole and threaded bolt are used to produce the effect of selecting the appropriate spacing distance according to actual needs to adjust the specific tightening length of the cutting wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification, but do not constitute a limitation of the present invention. In the accompanying drawings:
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the tightening wire mechanism in the utility model;
[0023] Figure 3 This is an exploded schematic diagram of the tightening wire mechanism in the utility model;
[0024] Figure 4 yes Figure 3Enlarged schematic diagram of the structure of part A in the middle.
[0025] In the figure, 1, wire drum; 11, column; 2, workpiece rack; 3, upper wire rack; 4, lower wire rack; 5, cutting wire; 6, wire tightening mechanism; 7, turntable; 71, wire roller; 711, fitting groove; 72, rotating shaft; 73, elastic ratchet; 74, ratchet ring; 75, ratchet groove; 76, first gear; 77, second gear; 8, driving motor; 9, positioning block; 91, locking column; 92, twisting hole; 10, extension plate; 101, roller hole; 102, threaded bolt. DETAILED DESCRIPTION
[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1-4 , the utility model provides a technical solution:
[0029] It includes a bed, and a wire conveying drum 1, a column 11 and a workpiece rack 2 are fixedly installed on the top wall of the bed, and a horizontal upper wire rack 3 and a lower wire rack 4 are fixedly installed on the outer wall of the column 11. The wire conveying drum 1 is wound with a cutting wire 5, and the cutting wire 5 passes through the upper wire rack 3, the workpiece rack 2, and the lower wire rack 4 in sequence and returns to the wire conveying drum 1 in a closed loop. A wire tightening mechanism 6 is fixedly installed on the outer wall of the column 11, and the wire tightening mechanism 6 includes a turntable 7 fixedly set on the outer wall of the column 11 and rotatably connected, and the turntable 7 is equipped with a driving motor 8. The turntable 7 is provided with wire rollers 71 at intervals along the diameter direction on one side away from the column 11, and the wire rollers 71 are distributed on both sides of the cutting wire 5 and are arranged to abut against each other. The rim of the wire roller 71 is surrounded by an engaging groove 711 for the cutting wire 5 to be engaged and placed.
[0030] By adopting the above technical solution, the driving motor 8 is a servo motor that is started intermittently, the output torque is constant and the positioning setting is after power failure, and it is responsible for providing a constant tensioning force to the cutting wire 5. When the equipment is working, the driving motor 8 drives the turntable 7 to rotate, driving the wire roller 71 to rotate and move. During the displacement process, the wire roller 71 will resist and twist to tighten the cutting wire 5. Since the torque of the driving motor 8 is constant, the pressure of the metal rolling wheel resisting the cutting wire 5 is constant. During the relaxation of the cutting wire 5, the rotation angle of the wire roller 71 driven by the turntable 7 will gradually increase, achieving the effect of tightening the cutting wire 5 with a constant tension. At the same time, the angle change of the wire roller 71 can be intuitively displayed, so that the operator can clearly know the specific degree of relaxation of the cutting wire 5. Before the cutting wire 5 breaks when the maximum relaxation degree is reached, the cutting wire 5 can be replaced in time.
[0031] Furthermore, a rotating shaft 72 penetrating the column 11 is fixedly provided on one side of the turntable 7, and the driving motor 8 drives the rotating shaft 72 to be provided. A plurality of elastic ratchets 73 distributed in oblique directions are extended from the periphery of the rotating shaft 72, and a ratchet ring 74 surrounding and unidirectionally locking the elastic ratchet 73 is fixedly installed on the outer wall of the column 11, and a ratchet groove 75 is provided in the ratchet ring 74 to cooperate with the elastic ratchet 73, and the angle of the ratchet groove 75 is less than or equal to 90 degrees.
[0032] By adopting the above technical solution, the elastic ratchet 73 cooperates with the ratchet groove 75. When the elastic ratchet 73 moves along the direction of the ratchet groove 75, the elastic ratchet 73 undergoes elastic deformation and shrinks until it enters the next ratchet groove 75. At this time, the turntable 7 can rotate normally to tighten the cutting wire 5. When the elastic ratchet 73 moves against the direction of the ratchet groove 75, the elastic ratchet 73 will resist the groove wall of the ratchet groove 75, making the turntable 7 unable to rotate. Since the turntable 7 only allows one-way rotation, the turntable 7 cannot be reversed after tightening the cutting wire 5. After the drive motor 8 is powered off, the cutting wire 5 will still remain taut, thereby achieving the effect of tightening the cutting wire 5 throughout the entire process.
[0033] Furthermore, one end of the rotating shaft 72 passing through the column 11 is fixedly sleeved with a first gear 76, the driving motor 8 is fixedly set on the outer wall of the column 11, and the driving motor 8 is sleeved with a second gear 77 meshing with the first gear 76, and the gear ratio of the first gear 76 to the second gear 77 is 2:1-10:1.
[0034] By adopting the above technical solution, the first gear 76 is a large gear and the second gear 77 is a small gear. The larger the gear ratio, the higher the precision of the drive motor 8 driving the turntable 7. Due to the leverage effect, the drive motor 8 can maintain a large torque to drive the turntable to rotate with low output power, which has a good control effect and a more precise drive.
[0035] Furthermore, the ratchet ring 74 is rotatably connected to the outer wall of the column 11, and a positioning block 9 is fixedly provided on the outer wall of the column 11. A locking column 91 with a threaded connection is penetrated through the positioning block 9, and one end of the locking column 91 is inserted into the rim of the ratchet wheel. A plurality of screwing holes 92 are penetrated through the end of the locking column 91 away from the ratchet wheel.
[0036] By adopting the above technical solution, when the ratchet ring 74 is rotated and positioned, the turntable 7 can be effectively locked to prevent the turntable 7 from rotating in the opposite direction to loosen the cutting wire 5, so that the wire is always kept in a taut state. When the cutting wire 5 needs to be replaced, the elastic ratchet 73 needs to be released, and the locking column 91 is twisted away from the ratchet ring 74 under the action of the thread. After the end is completely moved out of the ratchet ring 74, the ratchet ring 74 can rotate freely. At this time, the ratchet ring 74 cannot lock the turntable 7, and the turntable 7 can be rotated in the opposite direction to loosen the cutting wire 5 for replacement.
[0037] Furthermore, an extension plate 10 having a length greater than the diameter of the turntable 7 is fixedly installed on one side of the turntable close to the wire roller 71, and the extension plate 10 is provided with a plurality of pairs of roller holes 101 along the length direction. A threaded bolt 102 is provided through the wire roller 71, and the threaded bolt 102 is threadedly connected to the roller hole 101.
[0038] By adopting the above technical solution, the extension plate 10 which is larger than the diameter of the turntable 7 has a longer installation distance. The farther the installation distance of the wire roller 71 is, the longer the tightening length of the cutting wire 5 is. The distance between the wire rollers 71 will also change when different roller holes 101 are selected. The appropriate spacing distance can be selected according to actual needs to adjust the specific tightening length of the cutting wire 5.
[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A vertical wire cutting machine tool, comprising a bed, wherein a wire conveying drum (1), a column (11) and a workpiece frame (2) are fixedly installed on the top wall of the bed, and a horizontal upper wire frame (3) and a lower wire frame (4) are fixedly installed on the outer wall of the column (11), and a cutting wire (5) is wound around the wire conveying drum (1), and the cutting wire (5) passes through the upper wire frame (3), the workpiece frame (2), and the lower wire frame (4) in sequence and returns to the wire conveying drum (1) in a closed loop arrangement, characterized in that: A wire tightening mechanism (6) is fixedly mounted on the outer wall of the column (11), the wire tightening mechanism (6) comprising a turntable (7) fixedly mounted on the outer wall of the column (11) and rotatably connected, the turntable (7) being matched with a driving motor (8), a side of the turntable (7) away from the column (11) being provided with wire rollers (71) spaced apart in a diameter direction, the wire rollers (71) being arranged on both sides of the cutting wire (5) in abutment with each other, and an engaging groove (711) for engaging and placing the cutting wire (5) is provided around the rim of the wire roller (71).
2. A vertical wire cutting machine according to claim 1, characterized in that: A rotating shaft (72) penetrating the column (11) is fixedly arranged on one side of the turntable (7), and the driving motor (8) drives the rotating shaft (72) to be arranged. A plurality of elastic ratchets (73) distributed in oblique directions are extended from the periphery of the rotating shaft (72), and a ratchet ring (74) surrounding and unidirectionally locking the elastic ratchet (73) is fixedly installed on the outer wall of the column (11), and a ratchet groove (75) is arranged in the ratchet ring (74) to cooperate with the elastic ratchet (73), and the angle of the ratchet groove (75) is less than or equal to 90 degrees.
3. A vertical wire cutting machine according to claim 2, characterized in that: One end of the rotating shaft (72) passing through the column (11) is fixedly sleeved with a first gear (76); the driving motor (8) is fixedly arranged on the outer wall of the column (11); the driving motor (8) is sleeved with a second gear (77) meshing with the first gear (76); the gear ratio between the first gear (76) and the second gear (77) is 2:1-10:
1.
4. A vertical wire cutting machine according to claim 3, characterized in that: The ratchet ring (74) is rotatably connected to the outer wall of the column (11), and a positioning block (9) is fixedly arranged on the outer wall of the column (11). A locking column (91) connected by a thread is penetrated through the positioning block (9), and one end of the locking column (91) is penetrated into the rim of the ratchet wheel. A plurality of screwing holes (92) are penetrated through the end of the locking column (91) away from the ratchet wheel.
5. A vertical wire cutting machine tool according to claim 4, characterized in that: An extension plate (10) having a length greater than the diameter of the turntable (7) is fixedly mounted on one side of the turntable close to the metal wire roller (71); the extension plate (10) is provided with a plurality of pairs of roller holes (101) along the length direction; a threaded bolt (102) is provided through the metal wire roller (71); the threaded bolt (102) is threadedly connected to the roller hole (101).