Numerical control gear hobbing machine capable of quickly fixing workpiece

Abstract

The utility model discloses a numerical control gear hobbing machine can quick fixing work piece, including frame, the inside frame is rotationally installed with first screw rod through support frame, the first motor of first screw rod connection is fixedly installed on the support frame upper end surface, the movable block is screw -threaded installed to first limiting mechanism through first screw rod outer wall, both sides outer walls of movable block all are fixedly installed with moving plate, and the both sides outer walls of two movable plate all are fixedly installed with the connecting plate through the connecting mechanism mutual fixed connection. The utility model discloses a first screw rod, electric push rod and positioning plate etc. component are set up, and first screw rod can make connecting plate drive multiple telescopic plates to move upward when rotating, thereby can make multiple positioning plate and work piece outer wall alignment, and then multiple electric push rod can synchronize and drive corresponding positioning plate to move, thereby can make multiple positioning plate synchronous movement to work piece and carry out centring clamping, make it be at the center position of fixed component, thereby improve work piece's machining accuracy.

Description

Technical Field

[0001] This utility model relates to the field of CNC gear hobbing machine technology, and in particular to a CNC gear hobbing machine that can quickly fix the workpiece. Background Technology

[0002] A CNC gear hobbing machine is a machine tool that uses CNC technology for precision gear machining. It controls parameters such as tool movement, speed, and feed through a CNC system to achieve high-precision and high-efficiency gear machining.

[0003] CNC gear hobbing machines are crucial equipment in gear manufacturing. During gear production, the method of fixing the workpiece has a significant impact on processing efficiency and accuracy. Traditional CNC gear hobbing machines cannot center and position the workpiece during fixing, leading to easy workpiece displacement. This displacement causes changes in the relative position of the cutting tool and the workpiece during hobbing, resulting in inaccurate tooth profiles and tooth shape errors, such as tooth asymmetry and profile deviation. These errors affect the smoothness of gear transmission and load-bearing capacity, reduce processing accuracy, and compromise practicality. Therefore, a new CNC gear hobbing machine capable of quickly fixing the workpiece needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a CNC gear hobbing machine that can quickly fix workpieces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A CNC gear hobbing machine for quickly fixing workpieces includes a machine base. A first screw is rotatably mounted inside the machine base via a support frame. A first motor connected to the first screw is fixedly mounted on the upper surface of the support frame. A movable block is threadedly mounted on the outer wall of the first screw via a first limiting mechanism. Movable plates are fixedly mounted on both outer walls of the movable blocks. A connecting plate is fixedly connected to the upper surface of both movable plates via a connecting mechanism. Multiple telescopic plates are fixedly mounted on the upper surface of the connecting plates. A telescopic opening is provided on the upper surface of the machine base to cooperate with the multiple telescopic plates. Each telescopic plate... Electric actuators are fixedly installed on the inner wall of the shrink plate. A positioning plate is fixedly installed on the telescopic end of each electric actuator. A movable frame is fixedly connected to the outer wall of the base through a fixing mechanism. A second screw is rotatably installed inside the movable frame. A second motor connected to the second screw is fixedly installed on the outer wall of the movable frame. A movable sleeve is threadedly installed on the outer wall of the second screw through a second limiting mechanism. A clamping frame is fixedly connected to the upper end face of the movable sleeve through a connecting rod. Extrusion plates are fixedly connected to the inner walls of both sides of the clamping frame through a telescopic mechanism. Anti-slip pads are fixedly installed on the inner walls of both extrusion plates.

[0007] Preferably, the first limiting mechanism includes a first limiting rod fixedly installed inside the support frame, and the first limiting rod slides through the moving block.

[0008] Preferably, the connecting mechanism includes a connecting rod fixedly installed on the upper surface of the movable plate, and the end of the connecting rod is fixedly connected to the bottom wall of the connecting plate.

[0009] Preferably, the fixing mechanism includes two fixing blocks fixedly installed on the outer wall of the base, and the ends of the two fixing blocks are fixedly connected to the outer wall of the movable frame.

[0010] Preferably, the second limiting mechanism includes a second limiting rod fixedly installed inside the movable frame, and the second limiting rod slides through the movable sleeve.

[0011] Preferably, the telescopic mechanism includes a hydraulic cylinder fixedly installed on the inner wall of the clamping frame, and the telescopic end of the hydraulic cylinder is fixedly connected to the outer wall of the extrusion plate.

[0012] The beneficial effects of this utility model are:

[0013] 1. By setting up components such as a first screw, electric actuators, and positioning plates, the first screw can cause the connecting plate to move multiple telescopic plates upward when it rotates, thereby aligning the multiple positioning plates with the outer wall of the workpiece. Subsequently, multiple electric actuators can extend synchronously and drive the corresponding positioning plates to move, thereby enabling the multiple positioning plates to move synchronously to center and clamp the workpiece, placing it in the center position of the fixed components, thus improving the machining accuracy of the workpiece.

[0014] 2. By setting up components such as a second screw, hydraulic cylinders, and extrusion plates, the hydraulic cylinders on both sides can extend synchronously and drive the extrusion plates on the same side to move. This allows the two extrusion plates to move closer to each other and clamp the workpiece with anti-slip pads. As the second screw continues to rotate, the clamped workpiece can be pushed out from the fixed components, thereby realizing automatic unloading of the workpiece after processing. This reduces the risk of operators being injured by moving parts and improves the safety of the production process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a CNC gear hobbing machine that can quickly fix a workpiece according to the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the vertical section structure;

[0017] Figure 3 This is a top view of a CNC gear hobbing machine that can quickly fix a workpiece, as proposed in this utility model.

[0018] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0019] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B in the diagram;

[0020] Figure 6 for Figure 3 A magnified schematic diagram of the structure at point C.

[0021] In the diagram: 1 base, 2 support frame, 3 first screw, 4 first motor, 5 first limit rod, 6 moving block, 7 moving plate, 8 connecting rod, 9 connecting plate, 10 telescopic plate, 11 electric push rod, 12 positioning plate, 13 fixing block, 14 moving frame, 15 second screw, 16 second motor, 17 second limit rod, 18 moving sleeve, 19 connecting rod, 20 clamping frame, 21 hydraulic cylinder, 22 extrusion plate, 23 anti-slip pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6 A CNC gear hobbing machine for quickly fixing workpieces includes a base 1. A first screw 3 is rotatably mounted inside the base 1 via a support frame 2. A first motor 4, connected to the first screw 3, is fixedly mounted on the upper surface of the support frame 2. A moving block 6 is threadedly mounted on the outer wall of the first screw 3 via a first limiting mechanism. The first limiting mechanism includes a first limiting rod 5 fixedly mounted inside the support frame 2, which slides through the moving block 6. When the first screw 3 rotates under the drive of the first motor 4, the moving block 6, restricted by the first limiting rod 5, cannot follow the screw in a circular rotation but can only move linearly along the axial direction of the first limiting rod 5. This design effectively converts the rotation of the screw into the linear motion of the moving block 6, providing a stable and precise power transmission method for the movement of subsequent components. Moving plates 7 are fixedly mounted on both outer walls of the moving block 6. A connecting plate 9 is fixedly connected to the upper surface of both moving plates 7 via a connecting mechanism. The connecting mechanism includes a connecting rod 8 fixedly mounted on the upper surface of the moving plate 7, with the end of the connecting rod 8 fixedly connected to the bottom wall of the connecting plate 9.

[0024] Multiple telescopic plates 10 are fixedly installed on the upper surface of the connecting plate 9. The upper surface of the base 1 is provided with telescopic openings that cooperate with the multiple telescopic plates 10. Each telescopic plate 10 has an electric push rod 11 fixedly installed on its inner wall. Each electric push rod 11 has a positioning plate 12 fixedly installed at its telescopic end. A movable frame 14 is fixedly connected to the outer wall of the base 1 through a fixing mechanism. The fixing mechanism includes two fixing blocks 13 fixedly installed on the outer wall of the base 1. The ends of the two fixing blocks 13 are fixedly connected to the outer wall of the movable frame 14.

[0025] A second screw 15 is rotatably mounted inside the movable frame 14. A second motor 16, connected to the second screw 15, is fixedly mounted on the outer wall of the movable frame 14. A movable sleeve 18 is threadedly mounted on the outer wall of the second screw 15 through a second limiting mechanism. The second limiting mechanism includes a second limiting rod 17 fixedly mounted inside the movable frame 14. The second limiting rod 17 slides through the movable sleeve 18. The presence of the second limiting rod 17 ensures that when the second screw 15 rotates, the movable sleeve 18 can only move linearly along the axial direction of the second limiting rod 17, thus converting the rotation of the second screw 15 into the linear motion of the movable sleeve 18, providing a basis for the clamping frame 20. The horizontal movement is powered by a clamping frame 20 fixedly connected to the upper end of the moving sleeve 18 via a connecting rod 19. The inner walls on both sides of the clamping frame 20 are fixedly connected to extrusion plates 22 via telescopic mechanisms. The telescopic mechanism includes a hydraulic cylinder 21 fixedly installed on the inner wall of the clamping frame 20. The telescopic end of the hydraulic cylinder 21 is fixedly connected to the outer wall of the extrusion plate 22. Anti-slip pads 23 are fixedly installed on the inner walls of both extrusion plates 22. The anti-slip pads 23 are usually made of rubber or other anti-slip materials with a high coefficient of friction. Their function is to increase the friction between the extrusion plate 22 and the workpiece surface when the extrusion plate 22 clamps the workpiece, and to prevent the workpiece from sliding during the unloading process.

[0026] In use, the workpiece can be placed in the fixing assembly on the upper surface of the machine base 1. Then, the first motor 4 can drive the first screw 3 to rotate. When the first screw 3 rotates, it can drive the moving block 6 to move through the cooperation of the first limit rod 5. At this time, the moving block 6 can drive the connecting plate 9 to move upward through the cooperation of the two moving plates 7 and the two connecting rods 8. The connecting plate 9 can drive the multiple positioning plates 12 to move upward through the cooperation of the telescopic plate 10. Then, the multiple electric push rods 11 can extend synchronously and drive the corresponding positioning plates 12 to move. Thus, the multiple positioning plates 12 can move synchronously to center and clamp the workpiece, so that it is in the center position of the fixing assembly. Then the fixing assembly can squeeze and fix it, thereby avoiding displacement of the workpiece during fixing and preventing the processing effect from being affected.

[0027] After the workpiece is fixed, the first motor 4 drives the first screw 3 to reverse, thereby causing multiple telescopic plates 10 to move downwards, preventing them from extending and affecting the processing of the workpiece. When the workpiece needs to be unloaded after processing, the fixing component can be released first. Then, the second motor 16 drives the second screw 15 to rotate. When the second screw 15 rotates, it can drive the moving sleeve 18 to move through the cooperation of the second limit rod 17. At this time, the moving sleeve 18 can drive the clamping frame 20 to move through the cooperation of the connecting rod 19. Under the drive of the clamping frame 20, the two extrusion plates 22 can move to the outer wall of the workpiece. At this time, the hydraulic cylinders 21 on both sides can extend synchronously and drive the extrusion plates 22 on the same side to move, thereby bringing the two extrusion plates 22 closer to each other and clamping the workpiece through the anti-slip pad 23. As the second screw 15 continues to rotate, the clamped workpiece can be pushed out from the fixing component, thereby realizing automatic unloading of the workpiece after processing, which can reduce the risk of operators being injured by moving parts and improve the safety of the production process.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A CNC gear hobbing machine capable of quickly fixing workpieces, comprising a machine base (1), characterized in that, The base (1) is rotatably mounted with a first screw (3) via a support frame (2). A first motor (4) connected to the first screw (3) is fixedly mounted on the upper end face of the support frame (2). A moving block (6) is threadedly mounted on the outer wall of the first screw (3) via a first limiting mechanism. Moving plates (7) are fixedly mounted on both outer walls of the moving block (6). A connecting plate (9) is fixedly connected to the upper end face of both moving plates (7) via a connecting mechanism. Multiple telescopic plates (10) are fixedly mounted on the upper end face of the connecting plate (9). The upper end face of the base (1) is provided with a telescopic opening that cooperates with the multiple telescopic plates (10). An electric push rod (11) is fixedly mounted on the inner wall of each telescopic plate (10). The telescopic ends of the electric actuator (11) are all fixedly installed with positioning plates (12). The outer wall of the base (1) is fixedly connected with a movable frame (14) through a fixing mechanism. The movable frame (14) is rotatably installed with a second screw (15). The outer wall of the movable frame (14) is fixedly installed with a second motor (16) connected to the second screw (15). The outer wall of the second screw (15) is threadedly installed with a movable sleeve (18) through a second limiting mechanism. The upper end face of the movable sleeve (18) is fixedly connected with a clamping frame (20) through a connecting rod (19). The inner walls on both sides of the clamping frame (20) are fixedly connected with extrusion plates (22) through a telescopic mechanism. The inner walls of the two extrusion plates (22) are fixedly installed with anti-slip pads (23).

2. The CNC gear hobbing machine for quickly fixing workpieces according to claim 1, characterized in that, The first limiting mechanism includes a first limiting rod (5) fixedly installed inside the support frame (2), and the first limiting rod (5) slides through the moving block (6).

3. A CNC gear hobbing machine for quickly fixing workpieces according to claim 2, characterized in that, The connecting mechanism includes a connecting rod (8) fixedly installed on the upper surface of the movable plate (7), and the end of the connecting rod (8) is fixedly connected to the bottom wall of the connecting plate (9).

4. A CNC gear hobbing machine for quickly fixing workpieces according to claim 3, characterized in that, The fixing mechanism includes two fixing blocks (13) fixedly installed on the outer wall of the base (1), and the ends of the two fixing blocks (13) are fixedly connected to the outer wall of the movable frame (14).

5. A CNC gear hobbing machine for quickly fixing workpieces according to claim 4, characterized in that, The second limiting mechanism includes a second limiting rod (17) fixedly installed inside the movable frame (14), and the second limiting rod (17) slides through the movable sleeve (18).

6. A CNC gear hobbing machine for quickly fixing workpieces according to claim 5, characterized in that, The telescopic mechanism includes a hydraulic cylinder (21) fixedly installed on the inner wall of the clamping frame (20), and the telescopic end of the hydraulic cylinder (21) is fixedly connected to the outer wall of the extrusion plate (22).

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