Workpiece overturning structure and medium-speed wire cutting machine tool

Abstract

The utility model relates to the technical field of medium-speed wire cutting machine tools, and discloses a workpiece overturning structure and a medium-speed wire cutting machine tool, the workpiece overturning structure comprises an overturning frame, a supporting plate, a pressing plate and a positioning assembly, the overturning frame is driven by an electric rotary table to rotate and overturn; the supporting plate is used for supporting a circular workpiece and is driven by the driving assembly to rotate; the pressing plate is matched with the supporting plate to press the circular workpiece from the position above the circular workpiece, the pressing plate is pushed by the vertical linear module to ascend and descend, and the positioning assembly positions the circular workpiece to the position coaxial with the supporting plate through the action of a horizontal pushing cylinder on the positioning assembly. According to the utility model, a workpiece is clamped between the pressing plate and the supporting plate. Rotation of the supporting plate is achieved through a synchronous wheel shaft and a driving motor driven by a synchronous belt, and therefore the workpiece can automatically rotate in the machining process. And the turnover frame can turn over the workpiece as required, so that the front and back surfaces can be machined conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of medium-speed wire cutting machine tools, and particularly relates to a workpiece turning structure and a medium-speed wire cutting machine tool. Background Art

[0002] The function of medium-speed wire cutting machine tools is mainly to use the principle of electric spark corrosion of metal, and use the moving molybdenum wire as an electrode to accurately cut conductive materials, so that it can process hard conductive materials such as cemented carbide, as well as complex medium and small metal parts and delicate and complex small workpieces. It can complete the cutting processing of parts of different sizes, cones, frustums, prisms, gears, upper and lower special shapes, etc. Through high-precision control systems and mechanical structures, high-precision and high-quality processing surfaces can be achieved. It is widely used in precision mold manufacturing, automobiles, weapons industry, aerospace industry, tractors, electromechanical, printing, textile machinery manufacturing and other fields.

[0003] At present, in the process of processing circular workpieces by wire cutting machine tools, Figure 1 As shown, the circular workpiece is clamped on the fixture, which includes a pressure plate, a bracket, and a locking screw. The circular workpiece is placed on the inner side of the bracket, and the pressure plate is pushed by rotating the locking screw to press and fix the circular workpiece on the bracket. During the processing of the entire outer edge of the circular workpiece, since the outer edge is partially blocked by the bracket, it is necessary to readjust the fixture, loosen the locking screw, and manually rotate the circular workpiece to expose the part blocked by the bracket. Then, the circular workpiece is processed with the medium-speed wire cutting machine.

[0004] During the processing, due to the obstruction of the bracket, the circular workpiece needs to be manually rotated and the unobstructed part needs to be adjusted for processing. This requires frequent shutdowns for adjustments, resulting in low processing efficiency. When manually adjusting the position of the workpiece, the operator's accuracy and consistency are difficult to guarantee, and positioning errors are easily generated, affecting the processing accuracy. Each time a circular workpiece is processed, multiple fixture adjustments and workpiece rotations are required, which increases the complexity of the operating steps. When manually rotating the workpiece, the operator may touch the high-speed moving molybdenum wire or other dangerous parts, posing a safety hazard. Due to the manual adjustment of the fixture pressure, it is difficult to ensure that the pressure of the pressure plate on the workpiece is uniform. After each rotation of the workpiece, it needs to be repositioned, and it is difficult to ensure the accuracy of each positioning, which affects the repeatability of the processing.

[0005] In view of this, we propose a workpiece flipping structure and a medium-speed wire cutting machine to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the technical problems that the traditional fixtures in the above-mentioned prior art have defects such as low efficiency, difficult to control precision, complicated operation, poor safety, high risk of workpiece damage, limited processing flexibility and poor repeatability during use. These defects limit the performance and applicability of medium-speed wire cutting machines when processing circular workpieces.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A workpiece turning structure includes a turning frame, a supporting plate, a pressing plate and a positioning component.

[0009] The turning frame is driven by an electric turntable to rotate and turn. The front end of the turning frame is provided with a cross-shaped bracket which is an integral structure with the turning frame.

[0010] The support plate is used to support the circular workpiece. The support plate is rotatably arranged at the center of the cross-shaped bracket and is driven to rotate by the driving assembly.

[0011] The pressing plate cooperates with the supporting plate to press the circular workpiece from above the circular workpiece. The pressing plate is rotatably arranged on the lifting bracket, and the lifting bracket is fixed on the lifting platform of the vertical linear module.

[0012] There are four positioning components and they are respectively arranged on the outer end sides of the four directions of the cross-shaped bracket. The positioning components position the circular workpiece to a position coaxial with the support plate through the action of the push cylinder thereon.

[0013] Preferably, the supporting plate and the pressing plate are both circular plates.

[0014] Preferably, the driving assembly includes a synchronous wheel shaft A rotatably provided at the center of the cross-shaped bracket and fixedly connected to the support plate, a synchronous wheel shaft B rotatably provided on the flip frame and meshing with the synchronous wheel on the synchronous wheel shaft A through a synchronous belt, and a driving motor driving the synchronous wheel shaft B to rotate;

[0015] A protective cover is fixedly provided at the bottom of the turnover frame, which covers the outer side surfaces of the synchronous wheel shaft A, the synchronous wheel shaft B and the synchronous belt, and the driving motor is fixed at the bottom of the protective cover.

[0016] Preferably, a support is fixedly provided on the top of the turning frame, the vertical linear module is fixed on the top of the support, and the support is also fixedly connected to the vertical linear module via a reinforcing plate.

[0017] Preferably, the side of the lifting bracket away from the pressure plate is rotatably connected to the I-shaped wheel through two sets of wheel frames, and the I-shaped wheel rolls along the vertical guide rail on the rear side of the vertical linear module.

[0018] The supports and reinforcement plates provide a more rigid support for the vertical linear module, increasing the stability of the entire structure. The connection between the two sets of wheel carriers and the I-shaped wheels enables the lifting bracket to achieve smooth and precise vertical movement. The I-shaped wheels roll along the vertical guide rails, providing precise guidance and ensuring processing accuracy.

[0019] Preferably, the positioning assembly further comprises a vertical plate fixed on the cross-shaped bracket, a push plate fixedly connected to the end of the piston rod of the push cylinder and used to push the circular workpiece, and the push cylinder is fixed on the vertical plate.

[0020] The configuration of the vertical plate and the horizontal push cylinder provides a more precise positioning method to ensure the accurate position of the workpiece during the processing.

[0021] A wire cutting machine tool comprises a workpiece turning structure.

[0022] Compared with the prior art, the technical effects and advantages of the utility model are:

[0023] The workpiece flipping structure and the medium-speed wire cutting machine tool realize automatic flipping of the workpiece through the flipping frame driven by the electric turntable, and cooperate with the rotation of the pallet driven by the drive component to realize the automatic positioning and clamping of the circular workpiece. Specifically, after the circular workpiece is placed on the pallet, the push cylinders of the four sets of positioning components are actuated to accurately position the workpiece to a position coaxial with the pallet. Subsequently, the vertical linear module drives the lifting platform, lifting bracket and pressure plate to move downward, clamping the workpiece between the pressure plate and the pallet. The rotation of the pallet is achieved by a drive motor driven by a synchronous wheel shaft and a synchronous belt, so that the workpiece can rotate automatically during the processing process. The flipping frame can flip the workpiece when needed to facilitate processing on the front and back sides.

[0024] This workpiece flipping mechanism and medium-speed wire EDM machine significantly improve production efficiency. Automated rotation and flipping significantly reduces manual intervention during workpiece processing, reducing labor intensity and improving production efficiency. The flipping frame design facilitates front and back machining of circular workpieces, increasing processing flexibility. This feature is particularly effective when machining complex workpieces requiring dual-sided machining.

[0025] The workpiece flipping mechanism and precise positioning components on the medium-speed wire EDM machine ensure high-precision workpiece machining. The four horizontal cylinders on the positioning components precisely push the workpiece into position, ensuring coaxiality between the workpiece, the support plate, and the pressure plate, thereby reducing machining errors and improving machining accuracy. The fast and precise clamping process shortens setup time and further improves machining efficiency.

[0026] The workpiece flipping mechanism, along with the precise transmission and stable structural design of the synchronous wheels and belts on the medium-speed wire EDM machine, reduces mechanical vibration during machining and improves the finish of the machined surface. Furthermore, a protective cover protects the synchronous wheels and belts from damage by chips and coolant, reducing maintenance costs and the risk of workplace injuries. The high stability of the overall structure ensures precision during machining, minimizing errors caused by structural deformation or vibration, and thus ensuring high-quality workpiece machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the prior art;

[0028] Figure 2 It is a structural diagram of the utility model;

[0029] Figure 3 This is a state diagram of the circular workpiece clamping of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the utility model after the protective cover is removed.

[0031] In the figure: 1. Turning frame; 2. Electric turntable; 3. Cross-shaped bracket; 4. Support plate; 5. Drive assembly; 501. Synchronous wheel shaft A; 502. Synchronous belt; 503. Synchronous wheel shaft B; 504. Drive motor; 505. Protective cover; 6. Press plate; 7. Lifting bracket; 8. Vertical linear module; 9. Lifting platform; 10. Positioning assembly; 1001. Push cylinder; 1002. Vertical plate; 1003. Push plate; 11. Support; 12. Reinforcement plate; 13. Wheel frame; 14. I-shaped wheel; 15. Vertical guide rail; 16. Round workpiece.

[0032] a. Locking screw; b. Bracket. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] The following is combined with Figure 2-4 To further explain this application,

[0035] The embodiment of the present application discloses a workpiece turning structure, comprising a turning frame 1, a supporting plate 4, a pressing plate 6 and a positioning assembly 10.

[0036] The turning frame 1 is driven by the electric turntable 2 to rotate and turn. The front end of the turning frame 1 is provided with a cross-shaped bracket 3 which is an integral structure with the turning frame 1.

[0037] The support plate 4 is used to support the circular workpiece 16. The support plate 4 is rotatably disposed at the center of the cross-shaped bracket 3 and is driven to rotate by the drive assembly 5. The drive assembly 5 includes a synchronous wheel shaft A501 rotatably disposed at the center of the cross-shaped bracket 3 and fixedly connected to the support plate 4, a synchronous wheel shaft B503 rotatably disposed on the turning frame 1 and meshing with the synchronous wheel on the synchronous wheel shaft A501 through a synchronous belt 502, and a drive motor 504 that drives the synchronous wheel shaft B503 to rotate.

[0038] A protective cover 505 is fixed to the bottom of the tilting frame 1, covering the outer surfaces of the synchronous axle A501, synchronous axle B503, and synchronous belt 502. The drive motor 504 is fixed to the bottom of the protective cover 505. The synchronous axle and synchronous belt 502 provide a precise transmission ratio, ensuring the rotation accuracy of the pallet 4. The synchronous belt 502 provides a relatively smooth transmission, reducing mechanical vibration and improving the finish of the machined surface. The protective cover 505 effectively protects the synchronous axle and synchronous belt 502 from damage caused by chips, coolant, etc. The protective cover 505 prevents operators from accidentally touching rotating components, reducing the risk of work-related injuries.

[0039] The pressure plate 6, in conjunction with the support plate 4, compresses the circular workpiece 16 from above. Both the support plate 4 and the pressure plate 6 are circular plates. The circular design better ensures the centering of the workpiece between the support plate 4 and the pressure plate 6, reducing machining errors caused by poor centering. The circular structure provides more uniform contact pressure during rotation, improving machining stability. The circular structure also simplifies the clamping process, allowing for faster workpiece positioning and reducing adjustment time.

[0040] The pressure plate 6 is rotatably mounted on a lifting bracket 7, which is fixedly mounted on the lifting platform 9 of the vertical linear module 8. A support 11 is fixedly mounted on the top of the tilting frame 1, and the vertical linear module 8 is fixed on top of the support 11. The support 11 is also fixedly connected to the vertical linear module 8 via a reinforcing plate 12. The side of the lifting bracket 7 facing away from the pressure plate 6 is rotatably connected to I-shaped wheels 14 via two sets of wheel carriers 13. The I-shaped wheels 14 roll along vertical guide rails 15 on the rear side of the vertical linear module 8. The support 11 and reinforcing plate 12 provide a more solid support for the vertical linear module 8, increasing the stability of the entire structure. This stable structure ensures precision during processing and reduces errors caused by structural deformation or vibration. The connection between the two sets of wheel carriers 13 and the I-shaped wheels 14 enables the lifting bracket 7 to achieve smooth and precise vertical movement. The I-shaped wheels 14 roll along the vertical guide rails 15, providing precise guidance and ensuring processing accuracy.

[0041] There are four positioning assemblies 10 and they are respectively arranged on the outer end sides of the four directions of the cross-shaped bracket 3. The positioning assemblies 10 position the circular workpiece 16 to a position coaxial with the support plate 4 through the action of the push cylinder 1001 thereon.

[0042] The positioning assembly 10 also includes a vertical plate 1002 fixed on the cross-shaped bracket 3 and a push plate 1003 fixedly connected to the end of the piston rod of the horizontal push cylinder 1001 and used to push the circular workpiece 16. The horizontal push cylinder 1001 is fixed on the vertical plate 1002.

[0043] The configuration of the vertical plate 1002 and the horizontal push cylinder 1001 provides a more precise positioning method, ensuring the accurate position of the workpiece during processing. The design of the push plate 1003 makes it easier and faster to adjust the workpiece position, reducing operation time. Through precise and rapid positioning, the time for repeated positioning and calibration can be reduced, improving overall processing efficiency.

[0044] A wire cutting machine tool comprises a workpiece turning structure.

[0045] When in use, the circular workpiece 16 is placed on the top of the support plate 4, and the vertical linear module 8 drives the lifting platform 9, the lifting bracket 7 and the pressing plate 6 to move downward. The pressing plate 6 cooperates with the support plate 4 to clamp the circular workpiece 16 between the pressing plate 6 and the support plate 4. The support plate 4 is driven to rotate by the driving assembly 5, and then the circular workpiece 16 can rotate along with the support plate 4. During the processing of the circular workpiece 16, the circular workpiece 16 can be automatically rotated. In addition, the turning frame 1 is configured to facilitate the turning of the circular workpiece 16 for processing the front and back sides.

[0046] While conventional fixtures require manual adjustment when machining circular workpieces 16, the novel workpiece flipping mechanism enables automated rotation and flipping, reducing manual intervention and improving production efficiency. The design of the flipping frame 1 allows for easy flipping of the circular workpiece 16, enabling both front and back sides to be machined. This significantly enhances machining flexibility, particularly for complex workpieces requiring dual-sided machining.

[0047] During the loading process of the circular workpiece 16, after the circular workpiece 16 is loaded onto the support plate 4, the push cylinder 1001 on the four groups of positioning components 10 is actuated to push the push plate 1003 to adjust the position of the circular workpiece 16 to ensure that the circular workpiece 16 is coaxial with the support plate 4 and the pressure plate 6, thereby ensuring the processing accuracy of the circular workpiece 16 during the processing and reducing the processing error.

[0048] The workpiece flipping mechanism can quickly place the circular workpiece 16 on the support plate 4 and quickly adjust it into position via the positioning assembly 10, significantly reducing setup time compared to traditional fixtures. The four horizontal push cylinders 1001 of the positioning assembly 10 can accurately push the circular workpiece 16 to the correct position, ensuring workpiece stability during machining and avoiding machining errors caused by inaccurate positioning.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A workpiece turning structure, characterized in that: include: A turning frame (1), the turning frame (1) is driven by an electric turntable (2) to turn and turn, and a cross-shaped bracket (3) is provided at the front end of the turning frame (1) in an integrally formed structure; A support plate (4) is used to support a circular workpiece (16). The support plate (4) is rotatably arranged at the center of the cross-shaped bracket (3) and is driven to rotate by a driving assembly (5); A pressing plate (6) cooperates with a supporting plate (4) to press the circular workpiece (16) from above the circular workpiece (16); the pressing plate (6) is rotatably mounted on a lifting bracket (7), and the lifting bracket (7) is fixedly mounted on a lifting platform (9) of a vertical linear module (8); The positioning assembly (10) is provided with four positioning assemblies (10) and is respectively arranged on the outer end sides of the four directions of the cross-shaped bracket (3). The positioning assembly (10) positions the circular workpiece (16) to a position coaxial with the support plate (4) through the action of the push cylinder (1001) thereon.

2. A workpiece turning structure according to claim 1, characterized in that: The supporting plate (4) and the pressing plate (6) are both circular plates.

3. The workpiece turning structure according to claim 1, characterized in that: The driving assembly (5) comprises a synchronous wheel shaft A (501) rotatably arranged at the center of the cross-shaped bracket (3) and fixedly connected to the support plate (4), a synchronous wheel shaft B (503) rotatably arranged on the turning frame (1) and meshing with the synchronous wheel on the synchronous wheel shaft A (501) through a synchronous belt (502), and a driving motor (504) for driving the synchronous wheel shaft B (503) to rotate; A protective cover (505) is fixedly provided at the bottom of the turning frame (1) and covers the outer side surfaces of the synchronous wheel shaft A (501), the synchronous wheel shaft B (503) and the synchronous belt (502), and the driving motor (504) is fixed at the bottom of the protective cover (505).

4. The workpiece turning structure according to claim 1, characterized in that: A support (11) is fixed on the top of the turning frame (1), and the vertical linear module (8) is fixed on the top of the support (11). The support (11) is also fixedly connected to the vertical linear module (8) through a reinforcing plate (12).

5. The workpiece turning structure according to claim 1, characterized in that: The side of the lifting bracket (7) away from the pressure plate (6) is rotatably connected to the I-shaped wheel (14) through two sets of wheel frames (13), and the I-shaped wheel (14) is guided and rolled along the vertical guide rail (15) on the rear side of the vertical linear module (8).

6. The workpiece turning structure according to claim 1, characterized in that: The positioning assembly (10) further comprises a vertical plate (1002) fixed on the cross-shaped bracket (3), and a push plate (1003) fixedly connected to the end of the piston rod of the horizontal push cylinder (1001) and used to push the circular workpiece (16), wherein the horizontal push cylinder (1001) is fixed on the vertical plate (1002).

7. A wire-cutting machine tool, characterized in that: The wire-cutting machine tool comprises the workpiece turning structure according to any one of claims 1 to 6.

Images