Auxiliary clamp for numerical control machining center

Abstract

The utility model relates to the technical field of mechanical equipment, and discloses an auxiliary clamp for a numerical control machining center, the auxiliary clamp comprises a base, a sliding groove is formed in the upper surface of the base in a penetrating mode, two sliding blocks are installed in the sliding groove in a sliding mode, and a supporting plate is fixedly connected to the upper surfaces of the sliding blocks; fixing frames are rotationally installed on the opposite sides of the two supporting plates through connecting shafts, air cylinders are fixedly installed on the upper surfaces of the fixing frames, pressing plates located in the fixing frames are arranged at the output ends of the air cylinders, and connecting frames are fixedly connected to the lower surfaces of the two sliding blocks. The fixing frame can be driven to move through the first motor, the pressing plate can be driven to move through the air cylinder, so that a workpiece can be rapidly clamped and fixed, the connecting shaft can be driven to rotate through the second motor, a user can conveniently change the machining angle of the workpiece according to the actual situation, and the practicability of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment, and in particular to an auxiliary fixture for a CNC machining center. Background Art

[0002] CNC machining centers are high-efficiency automated machine tools that are composed of mechanical equipment and CNC systems and are suitable for machining complex parts. CNC machining centers have the ability to automatically exchange machining tools. By installing tools for different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool changer in one clamping to achieve multiple machining functions. CNC machining centers are currently one of the most productive and widely used CNC machine tools in the world. At present, before machining parts, CNC machining centers will use fixtures to limit and fix the parts. The clamping of parts needs to be stable to ensure the machining quality of the parts.

[0003] For example, a Chinese utility model patent with announcement number CN219403355U discloses an auxiliary fixture for a CNC machining center, including a base, a fixed clamp, a movable clamp and a fixed plate are arranged above the base, the fixed clamp and the movable clamp both include a clamp body and a clamping assembly fixed on the clamp body, the clamping assembly is used to clamp a workpiece; the fixed plate is threadedly connected with a first threaded rod for driving the movable clamp to move horizontally, one side of the movable clamp is fixedly connected with a rotating seat, and the rotating seat is rotatably connected to the first threaded rod. The utility model can drive the horizontal movement of the movable clamp through the mutual cooperation of the fixed plate, the first threaded rod, the rotating seat, the connecting block and the first crank, thereby satisfying the clamping of the fixed clamp and the movable clamp on workpieces of different specifications, and at the same time, the fixed clamp and the movable clamp both realize the clamping effect on the workpiece through the clamping assembly, which greatly shortens the time of the clamping process and avoids the cumbersome disassembly and assembly process when fixing by bolts in the prior art.

[0004] With regard to the above-mentioned related technologies, the inventor believes that when the clamp is used to clamp and fix the workpiece, the staff is required to manually rotate the first crank and the second crank, which increases the labor intensity of the staff, and when other surfaces of the workpiece need to be processed, the workpiece needs to be removed from the clamp, and then the workpiece needs to be turned over and fixed again by the clamp. The operation process is relatively cumbersome and inconvenient for the staff to use.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem that when the clamp is clamping and fixing the workpiece, the staff needs to manually rotate the first crank and the second crank, which increases the labor intensity of the staff, and when other surfaces of the workpiece need to be processed, the workpiece needs to be removed from the clamp, and then the workpiece needs to be turned over and fixed again by the clamp, which makes the operation process more cumbersome, the present application provides an auxiliary clamp for a CNC machining center.

[0007] The auxiliary fixture for a CNC machining center provided in this application adopts the following technical solution:

[0008] The top of the support frame is provided with a toothed structure, and the toothed structure is connected with the toothed structure to form a toothed structure. The toothed structure is connected with the toothed structure on the upper and lower surfaces of the support frame, and the toothed structure is connected with the toothed structure to form a toothed structure.

[0009] Preferably, the first driving mechanism includes a first motor and a bidirectional screw, the first motor is fixedly connected to one side of the base, the bidirectional screw is rotatably arranged in the slide groove, the bidirectional screw passes through the slider and is threadedly connected to it, and the output end of the first motor is fixedly connected to one end of the bidirectional screw.

[0010] Preferably, the second driving mechanism includes a second motor, a connecting tube, a connecting column, two worms and two worm wheels, the connecting tube and the connecting column are arranged between the two connecting frames, one end of the connecting column is arranged in the connecting tube through a limiting assembly, the two worms are respectively sleeved on the connecting tube and the connecting column, the two worm wheels are respectively sleeved on the two support rods, the worm wheels are meshed with the worms, the second motor is fixedly connected to the side wall of one of the connecting frames, and the output end of the second motor is fixedly connected to the connecting tube.

[0011] Preferably, the limiting assembly comprises a limiting block, the limiting block is fixedly connected to the side wall of the connecting column, a limiting groove is provided in the connecting cylinder, and the limiting block is slidably installed in the limiting groove.

[0012] Preferably, rubber pads are provided on the bottom side of the fixing frame and the lower surface of the pressing plate.

[0013] Preferably, a fixing rod is fixedly arranged in the slide groove, and the fixing rod passes through the slide block and is slidably connected thereto.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] The support rod can be driven to rotate by the second motor, and the support rod can drive the second bevel gear to rotate, and the second bevel gear can drive the connecting shaft to rotate through the first bevel gear, thereby driving the workpiece to rotate; compared with the prior art, the first motor can drive the fixed frame to move, and the cylinder can drive the pressure plate to move, so that the workpiece can be clamped and fixed quickly, and the second motor can drive the connecting shaft to rotate, so that the user can change the processing angle of the workpiece according to the actual situation, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a three-dimensional structure of an embodiment of the application;

[0017] Figure 2 is a schematic diagram of the three-dimensional structure of the embodiment of the application when the base is removed;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the limiting component of the embodiment of the application.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. slider; 3. support rod; 4. support plate; 5. cylinder; 6. fixed frame; 7. first bevel gear; 8. second bevel gear; 9. connecting shaft; 10. pressure plate; 11. first motor; 12. connecting frame; 13. rubber pad; 14. second motor; 15. worm gear; 16. connecting cylinder; 17. connecting column; 18. bidirectional screw; 19. fixed rod; 20. worm; 21. limit block; 22. limit groove. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-3 This application is described in further detail.

[0021] The present application discloses an auxiliary fixture for a CNC machining center. Figure 1-3, an auxiliary fixture for a CNC machining center, comprising a base 1, a slide groove is provided on the upper surface of the base 1, two sliders 2 are slidably installed in the slide groove, a support plate 4 is fixedly connected to the upper surface of the slider 2, a fixed frame 6 is rotatably installed on the opposite sides of the two support plates 4 through a connecting shaft 9, a cylinder 5 is fixedly installed on the upper surface of the fixed frame 6, a pressure plate 10 located inside the fixed frame 6 is provided at the output end of the cylinder 5, a connecting frame 12 is fixedly connected to the lower surface of the two sliders 2, a support rod 3 is rotatably provided on the bottom side of the connecting frame 12, a second bevel gear 8 is provided on the top end of the support rod 3 after passing through the slider 2, a first bevel gear 7 is sleeved on the connecting shaft 9, the first bevel gear 7 is meshed with the second bevel gear 8, the base 1 is transmission-connected to the slider 2 through a first driving mechanism, and the connecting frame 12 is transmission-connected to the support rod 3 through a second driving mechanism; when in use, the workpiece is placed in the fixed frame 6, and the first driving mechanism can Drive the two slide blocks 2 to move, and the slide block 2 can drive the fixing frame 6 to move through the support plate 4, so that the two fixing frames 6 are close to each other to clamp the workpiece. By starting the cylinder 5, the pressure plate 10 can be driven to move downward, so that the workpiece can be further pressed and fixed, so as to facilitate subsequent processing of the workpiece. When the workpiece needs to be turned over, the support rod 3 can be driven to rotate through the second driving mechanism, and the support rod 3 can drive the second bevel gear 8 to rotate. The second bevel gear 8 can drive the connecting shaft 9 to rotate through the first bevel gear 7, so as to drive the workpiece to rotate. After the workpiece is rotated to an appropriate angle, it can be done. In this process, the fixing frame 6 can be driven to move through the first driving mechanism, and the pressure plate 10 can be driven to move through the cylinder 5, so that the workpiece can be clamped and fixed quickly, and the connecting shaft 9 can be driven to rotate through the second driving mechanism, so that the user can change the processing angle of the workpiece according to actual conditions, thereby improving the practicability of the device.

[0022] Reference Figure 1 and Figure 2 The first driving mechanism includes a first motor 11 and a bidirectional screw rod 18. The first motor 11 is fixedly connected to one side of the base 1. The bidirectional screw rod 18 is rotatably arranged in the slide groove. The bidirectional screw rod 18 passes through the slider 2 and is threadedly connected thereto. The output end of the first motor 11 is fixedly connected to one end of the bidirectional screw rod 18. By starting the first motor 11, the bidirectional screw rod 18 can be driven to rotate, and the bidirectional screw rod 18 can drive the slider 2 to move, so that the two sliders 2 can approach or move away from each other.

[0023] Reference Figure 2 and Figure 3The second driving mechanism includes a second motor 14, a connecting tube 16, a connecting column 17, two worms 20 and two worm wheels 15. The connecting tube 16 and the connecting column 17 are arranged between the two connecting frames 12. One end of the connecting column 17 is arranged in the connecting tube 16 through a limit assembly. The two worms 20 are respectively sleeved on the connecting tube 16 and the connecting column 17. The two worm wheels 15 are respectively sleeved on the two support rods 3. The worm wheels 15 are meshed with the worms 20. The second motor 14 is fixed to the side wall of one of the connecting frames 12. The output end of the second motor 14 is fixedly connected to the connecting tube 16, and the models of the first motor 11 and the second motor 14 can both be selected as YE2-6344-37KW; by starting the second motor 14, the connecting tube 16 can be driven to rotate, and the connecting tube 16 can drive the connecting column 17 to rotate through the limiting assembly, thereby driving the worm 20 to rotate, and the worm 20 can drive the support rod 3 to rotate through the worm wheel 15, and the worm wheel 15 and the worm 20 are self-locking, thereby ensuring the stability of the overall device.

[0024] Reference Figure 3 The limit assembly includes a limit block 21, which is fixedly connected to the side wall of the connecting column 17. A limit groove 22 is provided in the connecting tube 16, and the limit block 21 is slidably installed in the limit groove 22; through the limit block 21, the connecting column 17 can slide in the connecting tube 16 and rotate with it.

[0025] Reference Figure 2 The bottom side of the fixing frame 6 and the lower surface of the pressing plate 10 are both provided with rubber pads 13; the rubber pads 13 can improve the fixing effect of the fixing frame 6 and the pressing plate 10 on the workpiece.

[0026] Reference Figure 2 A fixing rod 19 is fixedly arranged in the slide groove, and the fixing rod 19 passes through the slider 2 and is slidably connected thereto; the fixing rod 19 can ensure the stability of the slider 2 when moving.

[0027] The implementation principle of an auxiliary clamp for a CNC machining center in the embodiment of the present application is as follows: the electrical components appearing in the present application are all externally connected to a power supply and a control switch when in use. When in use, the workpiece is placed in a fixed frame 6, and the two slides 2 can be driven to move by the first driving mechanism, and the slide 2 can drive the fixed frame 6 to move through the support plate 4, so that the two fixed frames 6 are close to each other to clamp the workpiece, and the pressing plate 10 can be driven downward by starting the cylinder 5, so that the workpiece can be further pressed and fixed, so as to facilitate subsequent processing of the workpiece. When the workpiece needs to be turned over, the support rod 3 can be driven to rotate by the second driving mechanism, and the support rod 3 can drive the second bevel gear 8 to rotate, and the second bevel gear 8 can drive the connecting shaft 9 to rotate through the first bevel gear 7, so as to drive the workpiece to rotate, and the workpiece can be rotated to an appropriate angle. In this process, the fixed frame 6 can be driven to move by the first driving mechanism, and the pressing plate 10 can be driven to move by the cylinder 5, so that the workpiece can be clamped and fixed quickly, and the connecting shaft 9 can be driven to rotate by the second driving mechanism, so that it is convenient for the user to change the processing angle of the workpiece according to actual conditions, thereby improving the practicality of the device.

[0028] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0029] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary fixture for a CNC machining center, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a sliding groove, and two sliders (2) are slidably mounted in the sliding groove. The upper surface of the slider (2) is fixedly connected to a support plate (4), and a fixing frame (6) is rotatably mounted on opposite sides of the two support plates (4) through a connecting shaft (9). A cylinder (5) is fixedly mounted on the upper surface of the fixing frame (6), and a pressure plate (10) located inside the fixing frame (6) is provided at the output end of the cylinder (5). The lower surfaces of the two sliders (2) are fixedly connected to a connecting shaft (9). A connecting frame (12), a support rod (3) is rotatably arranged on the bottom side of the connecting frame (12), a second bevel gear (8) is arranged on the top end of the support rod (3) after passing through the slider (2), a first bevel gear (7) is sleeved on the connecting shaft (9), the first bevel gear (7) is meshed with the second bevel gear (8), the base (1) is transmission-connected to the slider (2) through a first driving mechanism, and the connecting frame (12) is transmission-connected to the support rod (3) through a second driving mechanism.

2. The auxiliary fixture for a CNC machining center according to claim 1, characterized in that: The first driving mechanism comprises a first motor (11) and a bidirectional screw rod (18); the first motor (11) is fixedly connected to one side of the base (1); the bidirectional screw rod (18) is rotatably arranged in the slide groove; the bidirectional screw rod (18) passes through the slider (2) and is threadedly connected thereto; and the output end of the first motor (11) is fixedly connected to one end of the bidirectional screw rod (18).

3. The auxiliary fixture for a CNC machining center according to claim 1, characterized in that: The second driving mechanism comprises a second motor (14), a connecting tube (16), a connecting column (17), two worms (20) and two worm wheels (15); the connecting tube (16) and the connecting column (17) are arranged between the two connecting frames (12); one end of the connecting column (17) is arranged in the connecting tube (16) through a limiting assembly; the two worms (20) are respectively sleeved on the connecting tube (16) and the connecting column (17); the two worm wheels (15) are respectively sleeved on the two supporting rods (3); the worm wheels (15) are meshed with the worms (20); the second motor (14) is fixedly connected to a side wall of one of the connecting frames (12); and the output end of the second motor (14) is fixedly connected to the connecting tube (16).

4. The auxiliary fixture for a CNC machining center according to claim 3, characterized in that: The limiting assembly comprises a limiting block (21), the limiting block (21) is fixedly connected to the side wall of the connecting column (17), a limiting groove (22) is provided in the connecting tube (16), and the limiting block (21) is slidably installed in the limiting groove (22).

5. The auxiliary fixture for a CNC machining center according to claim 1, characterized in that: The bottom side of the interior of the fixing frame (6) and the lower surface of the pressing plate (10) are both provided with rubber pads (13).

6. The auxiliary fixture for a CNC machining center according to claim 1, characterized in that: A fixing rod (19) is fixedly arranged in the sliding groove, and the fixing rod (19) passes through the sliding block (2) and is slidably connected thereto.

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