Workpiece positioning device for numerical control machining center

Abstract

The utility model discloses a workpiece positioning device for a numerical control machining center, which relates to the technical field of numerical control machining and comprises a machining center, a workbench is arranged in the machining center, a pair of flat tongs is mounted at the upper end of the workbench, and a shell is arranged on the front portion of the upper end of the workbench. A rotatable rotating plate is arranged in the middle of the upper end of the shell, a rotating component is arranged on the left portion of the upper end of the rotating plate and extends into the shell, a fixing rod is arranged on the middle left portion of the upper end of the rotating plate, the lower end of the fixing rod movably penetrates into the shell, and a positioning rod is arranged in the rotating plate in a sleeved mode. The rotating part drives the fixing rod and the positioning rod to be away from the workpiece when the fixing rod is moved upwards. By arranging the rotating part, the positioning rod can be driven to rotate, so that the operation steps of workers are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, in particular to a workpiece positioning device for a numerical control machining center. Background Technique

[0002] A numerical control machining center is a highly efficient automatic machine tool composed of mechanical equipment and a numerical control system, suitable for machining complex parts. It is one of the numerically controlled machine tools with the highest output and the widest application in the world. It has strong comprehensive machining capabilities. After the workpiece is clamped once, it can complete more machining contents, and the machining accuracy is relatively high. For batch workpieces with medium machining difficulty, its efficiency is 5-10 times that of ordinary equipment. In particular, it can complete many machining tasks that ordinary equipment cannot perform, and is more suitable for single-piece machining or medium and small batch multi-variety production with relatively complex shapes and high precision requirements. It integrates functions such as milling, boring, drilling, tapping, and threading on one device, making it have various machining process means. According to the spatial position of the spindle during machining, the machining center can be classified into: horizontal and vertical machining centers. According to the process use, it can be classified into: boring and milling machining centers, composite machining centers. According to special functions, it can be classified into: single-workbench, double-workbench, and multi-workbench machining centers. Single-axis, double-axis, three-axis, and machining centers with exchangeable spindle boxes. According to the guide rail, it can be classified into: linear guide machining centers, hard rail machining centers, etc.

[0003] The prior art (publication number: CN 219901230 U) discloses a workpiece positioning device for a numerical control vise, including a vise. The base is fixedly connected to the fixed vise body of the vise through a fixing screw. One side of the base away from the fixing screw extends to the jaw end face of the fixed vise body and is provided with a mounting hole perpendicular to the jaw opening and closing direction. A locking screw hole perpendicular to and communicating with the mounting hole is provided on the side surface of the base. The ejector rod slides through the mounting hole and one end extends into the jaw. The locking screw is threadedly connected in the locking screw hole and the bottom end abuts against the outer cylindrical surface of the ejector rod.

[0004] Although the above patent sets a base on one side of the jaw, and the ejector rod is slidably arranged on the base and fixed by a locking screw, so that the ejector rod can realize the front and back positioning and restraint of the workpiece in the vise, the ejector rod does not affect the work of the vise, and the slidable ejector rod can adapt to the front and back positioning and restraint of workpieces of different sizes, with the characteristics of simple structure, convenient adjustment, accurate and reliable positioning, and wide adaptability. However, there are the following drawbacks. When machining one end of the workpiece close to the ejector rod, after positioning is completed, the fixing screw needs to be loosened to remove the ejector rod before the machining center can machine the workpiece. During subsequent positioning, the screw needs to be rotated again to fix the ejector rod, and the operation is relatively complex, increasing the labor intensity of workers. Therefore, further improvement is needed. For this reason, we propose a workpiece positioning device for a numerical control machining center. Content of the Utility Model

[0005] The main object of the present utility model is to provide a workpiece positioning device for a numerical control machining center, which can effectively solve the problem of inconvenient movement of the positioning rod.

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0007] A workpiece positioning device for a numerical control machining center, including a machining center, a workbench is arranged inside the machining center, a vise is installed at the upper end of the workbench, a housing is arranged at the front part of the upper end of the workbench, a rotatable rotating plate is arranged in the middle of the upper end of the housing, a rotating component is arranged at the left part of the upper end of the rotating plate, the rotating component extends into the housing, a fixed rod is arranged at the middle left part of the upper end of the rotating plate, the lower end of the fixed rod movably penetrates into the housing, a positioning rod is sleeved inside the rotating plate, moving the fixed rod upward, the rotating component drives the fixed rod and the positioning rod away from the workpiece.

[0008] Preferably, the rotating component includes a rotating rod, the rotating rod is fixedly sleeved inside the rotating plate, the upper end of the rotating rod extends to the upper end of the rotating plate and is fixedly connected with a limiting block, the lower end of the rotating rod movably penetrates into the housing and is movably connected with the lower inner wall of the housing, a torsion spring is sleeved on the lower part of the outer surface of the rotating rod, one end of the torsion spring is fixedly connected with the lower inner wall of the housing, and the other end of the torsion spring is fixedly connected with the outer surface of the rotating rod.

[0009] Preferably, a baffle is installed at the rear part of the upper end of the housing.

[0010] Preferably, a protection component is installed at the front part of the upper end of the housing, the protection component includes an L-shaped plate, the L-shaped plate is installed at the front part of the upper end of the housing, a cross plate is installed at the front end of the L-shaped plate, and a cleaning brush is installed at the right part of the lower end of the cross plate.

[0011] Preferably, second screws are threadedly sleeved on both the left end and the right end of the housing, and the lower ends of the two second screws both extend into the workbench and are fixedly connected with a top block.

[0012] Preferably, the positioning rod is movably sleeved inside the rotating plate, the lower end of the rotating plate is connected with a first screw, and the upper end of the first screw threadedly penetrates into the rotating plate and is movably in contact with the lower end of the positioning rod.

[0013] Preferably, a pulley is rotatably connected to the front end of the positioning rod through a rotating shaft.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. By setting a rotating component, the positioning rod can be driven to rotate. After positioning is completed, the fixing rod is pulled out. Since the torsion spring is twisted, the torsion spring releases elastic force to drive the rotating plate to rotate, and the rotating plate drives the positioning rod to rotate, causing the positioning rod to move away from the surface of the workpiece, so that the surface of the workpiece can be processed. When repositioning, just rotate the rotating plate backward to make the positioning rod approach the vise, and then insert the fixing rod into the inner shell of the rotating plate again to fix the positioning rod, which is convenient for positioning the subsequent unprocessed workpieces. The operation is simple, without the need to turn screws to fix and disassemble the positioning rod, reducing the operation steps of workers and improving work efficiency.

[0016] 2. By setting a protective component, the positioning rod can be protected. When the positioning rod rotates forward and rotates into the inside of the cleaning brush, the cleaning brush can brush off the impurities in the positioning area of the positioning rod. During processing, the cleaning brush can prevent debris from splashing and adhering to the positioning area of the positioning rod, improving the positioning accuracy of the positioning rod. Description of the Drawings

[0017] Figure 1 It is the overall structural schematic diagram proposed in this embodiment;

[0018] Figure 2 It is the structural schematic diagram of the workbench in this embodiment;

[0019] Figure 3 It is the sectional structural schematic diagram of the housing and the rotating plate in this embodiment;

[0020] Figure 4 It is the structural schematic diagram of the protective component in this embodiment.

[0021] In the figure: 1. Machining center; 2. Workbench; 3. Vise; 4. Workpiece; 5. Housing; 6. Protective component; 7. Rotating plate; 8. Rotating component; 9. Fixing rod; 10. Positioning rod; 101. Pulley; 11. First screw; 12. Baffle; 51. Second screw; 52. Top block; 81. Rotating rod; 82. Limiting block; 83. Torsion spring; 61. L-shaped plate; 62. Cross plate; 63. Cleaning brush. Detailed Embodiment

[0022] To make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figures 1 - 4 As shown, a workpiece positioning device for a CNC machining center comprises a machining center 1, a workbench 2 is arranged in the machining center 1, a T-shaped slot is opened on the workbench 2, a flat-nose pliers 3 is installed on the upper end of the workbench 2, a workpiece 4 is fixed in the flat-nose pliers 3, a shell 5 is arranged at the front part of the upper end of the workbench 2, a rotatable rotating plate 7 is arranged at the middle part of the upper end of the shell 5, a rotating component 8 is arranged at the upper left part of the rotating plate 7, and the rotating component 8 extends into the shell 5, a fixing rod 9 is arranged at the middle left part of the upper end of the rotating plate 7, and the lower end of the fixing rod 9 is movably inserted into the shell 5, and a positioning rod 10 is sleeved inside the rotating plate 7. When machining other workpieces 4 of the same size, in order to facilitate rapid positioning of the workpiece 4, the positioning rod 10 is used to support the front side of the workpiece 4, and the position of the workpiece 4 in the flat-nose pliers 3 is recorded, so as to facilitate the subsequent rapid adjustment of the position of the workpiece 4. However, when it is necessary to machine one end close to the positioning rod 10, it is necessary to move the positioning rod 10 away from the workpiece. In order to quickly move the positioning rod 10, the positioning rod 10 is driven to rotate by the rotating component 8.

[0026] Specifically, the rotating component 8 includes a rotating rod 81, which is fixedly sleeved in the rotating plate 7. The upper end of the rotating rod 81 extends to the upper end of the rotating plate 7 and is fixedly connected to the limiting block 82. The lower end of the rotating rod 81 is movably inserted into the shell 5 and movably connected to the lower inner wall of the shell 5. The lower part of the outer surface of the rotating rod 81 is sleeved with a torsion spring 83. Figure 3The torsion spring 83 is in a twisted state. One end of the torsion spring 83 is fixedly connected to the lower inner wall of the housing 5, and the other end of the torsion spring 83 is fixedly connected to the outer surface of the rotating rod 81. After positioning is completed, the fixing rod 9 is pulled out. Due to the torsion of the torsion spring 83, the torsion spring 83 releases elastic force to drive the rotating plate 7 to rotate. The rotating plate 7 drives the positioning rod 10 to rotate, so that the positioning rod 10 moves away from the surface of the workpiece, and then the surface of the workpiece can be processed. When repositioning, only need to rotate the rotating plate 7 backward to make the positioning rod 10 approach the vise 3, and then insert the fixing rod 9 into the rotating plate 7 and the housing 5 again to fix the position of the positioning rod 10, which is convenient for positioning the subsequent unprocessed workpiece 4. The operation is simple, there is no need to screw the screw to fix and disassemble the positioning rod 10, reducing the operation steps of workers and improving work efficiency.

[0027] In order to facilitate the fixing rod 9 to quickly insert into the housing 5 through the rotating plate 7, a baffle 12 is installed at the rear part of the upper end of the housing 5. When the rotating plate 7 contacts the baffle 12, the fixing rod 9 can just insert into the housing 5 through the rotating plate.

[0028] In addition, when the machining center 1 processes the workpiece 4, debris will splash onto the positioning rod 10, and the debris will affect the accuracy of the next positioning. To solve this problem, a protective component 6 is installed at the front part of the upper end of the housing 5. The protective component 6 includes an L-shaped plate 61. The L-shaped plate 61 is installed at the front part of the upper end of the housing 5. A cross plate 62 is installed at the front end of the L-shaped plate 61. A cleaning brush 63 is installed at the lower right part of the cross plate 62. When the positioning rod 10 rotates forward and rotates into the inside of the cleaning brush 63, the cleaning brush 63 can brush off the impurities in the positioning area of the positioning rod 10. During machining, the cleaning brush 63 can prevent debris from splashing and adhering to the positioning area of the positioning rod 10, improving the positioning accuracy of the positioning rod 10.

[0029] Threaded sleeves of second screw rods 51 are sleeved on both the left end and the right end of the housing 5. The lower ends of the two second screw rods 51 extend into the workbench 2 and are fixedly connected with top blocks 52. The top blocks 52 are located in the T-shaped grooves of the workbench 2. Loosening the second screw rods 51 can move the position of the housing 5.

[0030] The positioning rod 10 is movably sleeved in the rotating plate 7. In order to fix the position of the positioning rod 10, a first screw rod 11 is connected to the lower end of the rotating plate 7. The upper end of the first screw rod 11 is threaded into the rotating plate 7 and is in movable contact with the lower end of the positioning rod 10. Loosening the first screw rod 11 can adjust the position of the positioning rod 10.

[0031] The front end of the positioning rod 10 is rotatably connected with a pulley 101 through a rotating shaft. The pulley 101 is used to contact the workpiece 4 instead of the positioning rod 10, which is convenient for subsequent rotation of the positioning rod 10.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A workpiece positioning device for a CNC machining center, comprising a machining center (1), characterized in that: A workbench (2) is provided in the machining center (1), a flat-nose pliers (3) is installed at the upper end of the workbench (2), a shell (5) is provided at the front of the upper end of the workbench (2), a rotatable rotating plate (7) is provided at the middle of the upper end of the shell (5), a rotating component (8) is provided at the upper left part of the rotating plate (7), the rotating component (8) extends into the shell (5), a fixed rod (9) is provided at the middle left part of the upper end of the rotating plate (7), the lower end of the fixed rod (9) is movably inserted into the shell (5), a positioning rod (10) is sleeved inside the rotating plate (7), and the fixed rod (9) is moved upward, so that the rotating component (8) drives the fixed rod (9) and the positioning rod (10) away from the workpiece (4).

2. A workpiece positioning device for a CNC machining center according to claim 1, characterized in that: The rotating component (8) comprises a rotating rod (81), the rotating rod (81) is fixedly sleeved in the rotating plate (7), the upper end of the rotating rod (81) extends to the upper end of the rotating plate (7) and is fixedly connected to a limiting block (82), the lower end of the rotating rod (81) is movably inserted into the shell (5) and is movably connected to the lower inner wall of the shell (5), a torsion spring (83) is sleeved on the lower part of the outer surface of the rotating rod (81), one end of the torsion spring (83) is fixedly connected to the lower inner wall of the shell (5), and the other end of the torsion spring (83) is fixedly connected to the outer surface of the rotating rod (81).

3. The workpiece positioning device for a CNC machining center according to claim 1, characterized in that: A baffle (12) is installed at the rear portion of the upper end of the housing (5).

4. The workpiece positioning device for a CNC machining center according to claim 1, characterized in that: A protective component (6) is installed at the front upper end of the shell (5), and the protective component (6) comprises an L-shaped plate (61). The L-shaped plate (61) is installed at the front upper end of the shell (5), a transverse plate (62) is installed at the front end of the L-shaped plate (61), and a cleaning brush (63) is installed at the right lower end of the transverse plate (62).

5. The workpiece positioning device for a CNC machining center according to claim 1, characterized in that: The left and right ends of the housing (5) are both threadedly sleeved with second screw rods (51), and the lower ends of the two second screw rods (51) extend into the workbench (2) and are fixedly connected to a top block (52).

6. The workpiece positioning device for a CNC machining center according to claim 1, characterized in that: The positioning rod (10) is movably sleeved in the rotating plate (7), the lower end of the rotating plate (7) is connected to a first screw rod (11), the upper end of the first screw rod (11) is threadedly inserted into the rotating plate (7) and movably contacts the lower end of the positioning rod (10).

7. The workpiece positioning device for a CNC machining center according to claim 1, characterized in that: The front end of the positioning rod (10) is rotatably connected to a pulley (101) via a rotating shaft.

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