Feeding clamping mechanism of numerical control machine tool

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a feeding clamping mechanism of a numerical control machine tool, which comprises a workbench, a conveying device and a clamping device, the numerical control machine tool comprises a drilling device, the drilling device is arranged at the rear end above the workbench, the conveying device is arranged at the front end of the workbench, and the clamping device is arranged on the workbench. The conveying device comprises a rack, a chain wheel and chain transmission structure and a stepping motor, a linear rail is arranged on the rack, the clamping device is arranged above the conveying device and comprises two clamping plate assemblies and a box body, each clamping plate assembly comprises an inner clamping plate and an outer clamping plate which are arranged in an internally-sleeved and externally-sleeved mode, and positioning grooves are formed in the opposite faces of the two inner clamping plates. The bottom of the box body is fixed to the chain, the box body is slidably connected to the linear rail, and a driving mechanism used for driving the two clamping plate assemblies to be close to or away from each other is arranged on the box body. The device is convenient for clamping the edge pressing block, ensures that the to-be-tapped end surface of the edge pressing block is horizontal, improves the tapping precision, and is convenient for later assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a feeding and clamping mechanism of a numerically controlled machine tool. Background Art

[0002] Photovoltaic panels are devices that generate direct current (DC) electricity when exposed to sunlight. They are composed of thin, solid-state photovoltaic cells made of semiconductor materials. During installation, each panel requires securing with a frame, side clamps, and intermediate clamps. Consequently, there is a significant demand for accessories like these.

[0003] Currently, during the processing of edge clamps, the finished edge clamps need to be placed on a CNC machine tool for drilling. Due to the irregular stepped shape of the edge clamps, conventional fixtures are difficult to clamp. Even if they are barely clamped to the fixture, there is no guarantee that the end face to be drilled is in a horizontal position. This can lead to precision errors in the machined holes, causing inconvenience during subsequent assembly.

[0004] For this reason, a feeding clamping mechanism for a CNC machine tool is urgently needed. Utility Model Content

[0005] In response to the above-mentioned defects in the prior art, the utility model provides a loading and clamping mechanism for a CNC machine tool, comprising a workbench, a conveying device and a clamping device, the CNC machine tool comprising a drilling device, which is arranged at the rear end above the workbench, and is used to drill holes in the conveyed workpiece, a slot is provided in the middle of the front end of the workbench, the rear end of the conveying device is passed through the slot of the workbench, and the front end of the conveying device is located in front of the workbench, the conveying device comprises a frame fixedly connected to the workbench, a sprocket chain transmission structure installed on the frame and a stepper motor arranged at the bottom of the workbench, a linear track is provided on the top of the frame, the sprocket chain transmission structure comprises a driven sprocket and a driving sprocket arranged front and back, and a chain spanned between the driven sprocket and the driving sprocket, and the wheel axle of the driving sprocket is transmission-connected to the output shaft of the stepper motor.

[0006] The cam is secured to the chassis and has two camshafts that are connected to the chassis, and the cams are secured to the chassis by a means for sliding the camshafts along the chassis.

[0007] Optionally, the drilling device includes a telescopic cylinder, a top plate, a horizontal guide rail, a sliding seat and a drilling motor. The cylinder seat of the telescopic cylinder is fixed on the workbench, the piston rod of the telescopic cylinder is fixedly connected to the top plate, the horizontal guide rail is arranged on the bottom surface of the top plate, and the axial direction of the horizontal guide rail is parallel to the axial direction of the linear rail. The sliding seat is slidably connected to the bottom of the horizontal guide rail. The horizontal guide rail can use electric, hydraulic or pneumatic means to drive the sliding seat to move. The drilling motor is fixed below the sliding seat. The output shaft of the drilling motor faces downward and is equipped with a drill bit, and the drill bit is located in the vertical plane where the median of the horizontal connecting line between the two clamping plate assemblies is located.

[0008] Optionally, the drilling device is also provided with a soot blowing mechanism, which includes a metal hose and a nozzle. The metal hose is fixed on the top plate, one end of the metal hose is connected to the nozzle, and the nozzle is downward toward the drill bit of the drilling motor, and the other end of the metal hose is connected to the air compressor.

[0009] Specifically, after the drilling is completed, the air compressor can be started to clean the debris and slag on the workbench through the nozzle.

[0010] Optionally, a material receiving box is provided at the bottom of the workbench, and the position of the material receiving box corresponds to the drilling device.

[0011] Specifically, the material receiving box is used to collect fallen debris, slag and other waste materials.

[0012] Optionally, the driving mechanism includes a servo motor arranged outside the box, a guide slide rail arranged inside the box, a bidirectional screw rod and two sliders, the guide slide rail is arranged at the bottom of the box, and limit blocks are provided at both ends of the guide slide rail, the bidirectional screw rod is arranged parallel to the top of the guide slide rail, one end of the bidirectional screw rod is rotatably connected in the box, the other end of the bidirectional screw rod passes through the box and is transmission connected to the output shaft of the servo motor, the left and right ends of the bidirectional screw rod respectively pass through the two sliders, and the two sliders are respectively slidably connected to the bidirectional screw rod through the nut pair of the bidirectional screw rod, the bottoms of the two sliders are both slidably connected to the guide slide rails, the tops of the two sliders are fixedly connected with connecting rods, and the two connecting rods pass through the guide slots of the box and are respectively fixedly connected to the bottoms of the two outer splints.

[0013] Optionally, a motor protection shell is provided outside the servo motor.

[0014] Optionally, corresponding bolt holes are provided on the front and rear frames of the outer plate and on the front and rear side surfaces of the inner plate.

[0015] Specifically, butterfly bolts can be used to fix the outer and inner clamping plates, making disassembly and installation easier.

[0016] The present invention also includes other components that enable the normal operation of a loading and clamping mechanism of a CNC machine tool, all of which are conventional technical means in the art. In addition, devices or components not limited in the present invention all adopt conventional technical means in the art, such as drilling motors, stepper motors, servo motors, and air compressors.

[0017] The working principle of the present invention is that when it is necessary to drill a hole in the edge pressure block, the edge pressure block is first clamped by the clamping device, and the specific steps are as follows: the output shaft of the servo motor is controlled to rotate forward, driving the bidirectional screw rod to rotate, so that the two sliders move back to back, thereby driving the two clamping plate assemblies away from each other, slightly increasing the distance between the two clamping plate assemblies, and then placing the edge pressure block between the two clamping plate assemblies, and controlling the output shaft of the servo motor to reverse, driving the two clamping plate assemblies to move closer to each other, and gradually reducing the distance between the two clamping plate assemblies, so that the two ends of the edge pressure block are respectively inserted into the inner clamping plates on both sides. the positioning groove until the two inner clamps clamp the side pressing block, at this time the end face of the side pressing block to be drilled is in a horizontal state; after the side pressing block is clamped and fixed, start the stepper motor to drive the clamping device and the side pressing block to move toward the drilling device through the sprocket chain transmission structure; after the clamping device moves to the bottom of the drilling device, control the telescopic cylinder to retract the piston rod, lower the top plate, and at the same time adjust the horizontal position of the drill bit so that the drill bit is located just above the side pressing block. After the adjustment is completed, start drilling; after the drilling is completed, remove the side pressing block and start the next round of drilling operation.

[0018] In addition, the clamping device can also be used to clamp other workpieces with more regular shapes. The specific steps are as follows: first remove the butterfly bolts on both sides of the outer splint, pull out the inner splint, so that the side of the inner splint with the positioning groove faces inward and the side without the positioning groove faces outward, then insert the inner splint into the inner cavity of the outer splint, and finally install the butterfly bolts to fix it, and use the other side of the two inner splints to clamp the workpiece.

[0019] The beneficial effects of the utility model are that it can not only clamp the edge pressure block to ensure that the end face of the edge pressure block to be opened is horizontal, improve the opening accuracy, and facilitate later assembly; it can also utilize the split structure of the splint assembly to clamp workpieces with regular shapes, increase the scope of application, and have strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a top view of the workbench of the present utility model.

[0023] Figure 3 It is a structural schematic diagram of the clamping device of the present utility model.

[0024] Figure 4 This is a structural diagram of the edge pressure block of the present utility model.

[0025] Figure 5 It is a structural schematic diagram of two splint assemblies of the utility model.

[0026] Figure 6 for Figure 5 Exploded view of one of the clamping plate assemblies in .

[0027] In the figure: 1. workbench, 2. clamping device, 3. telescopic cylinder, 4. top plate, 5. horizontal guide rail, 6. sliding seat, 7. drilling motor, 8. notch, 9. frame, 10. sprocket chain transmission structure, 11. stepper motor, 12. linear rail, 13. metal hose, 14. nozzle, 15. material receiving box, 16. splint assembly, 17. box body, 18. inner splint, 19. outer splint, 20. positioning groove, 21. side pressure block, 22. frame, 23. butterfly bolt, 24. roller, 25. connecting block, 26. servo motor, 27. guide rail, 28. bidirectional screw rod, 29. slider, 30. connecting rod. DETAILED DESCRIPTION

[0028] The present invention is described below in conjunction with the accompanying drawings and specific embodiments of the present invention. The description herein is intended only to explain the present invention and is not intended to limit the present invention. Based on the embodiments of the present invention, any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without creative work to all other embodiments obtained based on the embodiments of the present invention shall be included within the scope of protection of the present invention.

[0029] Example

[0030] like Figure 1-6 As shown, an embodiment of the utility model provides a loading and clamping mechanism of a CNC machine tool, comprising a workbench 1, a conveying device and a clamping device 2, the CNC machine tool comprising a drilling device, which is arranged at the rear end above the workbench 1, and is used to drill holes in the conveyed workpiece, the drilling device comprising a telescopic cylinder 3, a top plate 4, a horizontal guide rail 5, a sliding seat 6 and a drilling motor 7, the cylinder seat of the telescopic cylinder 3 is fixed on the workbench 1, the piston rod of the telescopic cylinder 3 is fixedly connected to the top plate 4, the horizontal guide rail 5 is arranged on the bottom surface of the top plate 4, the sliding seat 6 is slidably connected to the bottom of the horizontal guide rail 5, the horizontal guide rail 5 adopts an electric method to drive the sliding seat 6 to move, the drilling motor 7 is fixed below the sliding seat 6, and the output shaft of the drilling motor 7 faces downward and is equipped with a drill bit. A slot 8 is provided in the middle of the front end of the workbench 1, the rear end of the conveying device is passed through the slot 8 of the workbench 1, and the front end of the conveying device is located in front of the workbench 1. The conveying device includes a frame 9 fixedly connected to the workbench 1, a sprocket chain transmission structure 10 installed on the frame 9 and a stepper motor 11 arranged at the bottom of the workbench 1. A linear track 12 is provided on the top of the frame 9, and the axial direction of the linear track 12 is parallel to the axial direction of the horizontal guide rail 5. The sprocket chain transmission structure 10 includes a driven sprocket and a driving sprocket arranged in front and back, and a chain wrapped around the driven sprocket and the driving sprocket. The wheel axle of the driving sprocket is connected to the output shaft of the stepper motor 11.

[0031] In addition, the drilling device is also provided with a soot blowing mechanism, which includes a metal hose 13 and a nozzle 14. The metal hose 13 is fixed to the top plate 4. One end of the metal hose 13 is connected to the nozzle 14, and the nozzle 14 is downwardly directed toward the drill bit of the drilling motor 7. The other end of the metal hose 13 is connected to the air compressor. After the drilling is completed, the air compressor can be started to clean the debris and slag on the workbench 1 through the nozzle 14. A material receiving box 15 is provided at the bottom of the workbench 1, and the position of the material receiving box 15 corresponds to the drilling device. The material receiving box 15 is used to collect fallen debris, slag and other waste materials.

[0032] The clamping device 2 is arranged above the conveying device. The clamping device 2 includes two clamping plate assemblies 16 and a box 17. The two clamping plate assemblies 16 are symmetrically arranged above the box 17, and the mid-vertical line of the horizontal connection line between the two clamping plate assemblies 16 and the drill bit of the drilling motor 7 are in the same vertical plane. Each clamping plate assembly 16 includes an inner clamping plate 18 and an outer clamping plate 19 arranged inside and outside. The opposite surfaces of the two inner clamping plates 18 are provided with positioning grooves 20, and the positioning grooves 20 match the shape of the side pressure block 21. The two inner clamping plates 18 are provided with positioning grooves 20. The backs of the plates 18 are all flat surfaces without any grooves, and the two outer plywood 19 are provided with frames 22 on the front, rear and lower sides of the opposite surfaces, and the inner cavity surrounded by the three frames 22 matches the shape of the inner plywood 18, and the depth of the inner cavity is not greater than the thickness of the inner plywood 18; corresponding bolt holes are provided on the front and rear frames 22 of the outer plywood 19 and on the front and rear side surfaces of the inner plywood 18, and butterfly bolts 23 can be used to fix the outer plywood 19 and the inner plywood 18 to facilitate disassembly and installation. The top of the box body 17 is provided with a guide slot, the bottom of the box body 17 is provided with a roller 24 and a connecting block 25, and the box body 17 is slidably connected to the linear track 12 of the frame 9 through the roller 24, and the connecting block 25 is fixedly connected to the chain of the sprocket chain transmission structure 10. A driving mechanism for driving the two splint assemblies 16 to move closer to or away from each other is provided on the box body 17. The driving mechanism includes a servo motor 26 arranged outside the box body 17, a guide slide 27 arranged inside the box body 17, a bidirectional screw rod 28 and two sliders 29, a motor protection shell is provided outside the servo motor 26, the guide slide 27 is provided at the bottom of the box body 17, and the two sides of the guide slide 27 are fixedly connected to the sprocket chain transmission structure 10. A limit block is provided at the end, and a bidirectional screw rod 28 is arranged parallel to the top of the guide rail 27. One end of the bidirectional screw rod 28 is rotatably connected to the box body 17, and the other end of the bidirectional screw rod 28 passes through the box body 17 and is transmission-connected to the output shaft of the servo motor 26. The left and right ends of the bidirectional screw rod 28 respectively pass through two sliders 29, and the two sliders 29 are respectively slidably connected to the bidirectional screw rod 28 through the nut pairs of the bidirectional screw rod 28. The bottoms of the two sliders 29 are both slidably connected to the guide rail 27, and the tops of the two sliders 29 are fixedly connected with connecting rods 30, and the two connecting rods 30 pass through the guide slots of the box body 17 and are respectively fixedly connected to the bottoms of the two outer splints 19.

[0033] The working principle of the present invention is that when it is necessary to drill a hole in the side pressure block 21, the side pressure block 21 is first clamped by the clamping device 2, and the specific steps are as follows: the output shaft of the servo motor 26 is controlled to rotate forward, and the bidirectional screw rod 28 is driven to rotate, so that the two sliders 29 move back to back, thereby driving the two clamping plate assemblies 16 away from each other, slightly increasing the distance between the two clamping plate assemblies 16, and then placing the side pressure block 21 between the two clamping plate assemblies 16, and controlling the output shaft of the servo motor 26 to reverse, drive the two clamping plate assemblies 16 to move closer to each other, and gradually reduce the distance between the two clamping plate assemblies 16, so that the two ends of the side pressure block 21 are respectively inserted into the inner clamps on both sides. 1 and 2. The two inner clamping plates 18 are in the positioning groove 20 of the plate 18 until the two inner clamping plates 18 clamp the side pressing block 21. At this time, the end face of the side pressing block 21 to be drilled is in a horizontal state; after the side pressing block 21 is clamped and fixed, the stepping motor 11 is started to drive the clamping device 2 and the side pressing block 21 to move toward the drilling device through the sprocket chain transmission structure 10; after the clamping device 2 moves to the bottom of the drilling device, the telescopic cylinder 3 is controlled to retract the piston rod, lower the top plate 4, and at the same time adjust the horizontal position of the drill bit so that the drill bit is located directly above the side pressing block 21. After the adjustment is completed, drilling begins. After the drilling is completed, the side pressing block 21 is removed and the next round of drilling operation begins.

[0034] In addition, the clamping device 2 can also be used to clamp other workpieces with more regular shapes. The specific steps are as follows: first remove the butterfly bolts 23 on both sides of the outer clamping plate 19, pull out the inner clamping plate 18, so that the side of the inner clamping plate 18 with the positioning groove 20 faces inward and the side without the positioning groove 20 faces outward, and then insert the inner clamping plate 18 into the inner cavity of the outer clamping plate 19, and finally install the butterfly bolts 23 to fix it, and use the other side of the two inner clamping plates 18 to clamp the workpiece.

[0035] While the embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A loading and clamping mechanism for a CNC machine tool, comprising a workbench, a conveying device, and a clamping device. The CNC machine tool includes a drilling device disposed at the rear end above the workbench and used to drill holes in a conveyed workpiece, characterized in that: A notch is provided in the middle of the front end of the workbench, the rear end of the conveying device is inserted into the notch of the workbench, and the front end of the conveying device is located in front of the workbench. The conveying device includes a frame fixedly connected to the workbench, a sprocket chain transmission structure installed on the frame, and a stepper motor arranged at the bottom of the workbench. A linear track is provided on the top of the frame. The sprocket chain transmission structure includes a driven sprocket and a driving sprocket arranged in front and behind, and a chain spanning between the driven sprocket and the driving sprocket. The wheel shaft of the driving sprocket is drivingly connected to the output shaft of the stepper motor. The clamping device is arranged above the conveying device, and the clamping device includes two plywood assemblies and a box body. The two plywood assemblies are symmetrically arranged above the box body. Each plywood assembly includes an inner plywood and an outer plywood arranged inside and outside. Positioning grooves are provided on the opposite surfaces of the two inner plywoods, and frames are provided on the front, rear and bottom three directions of the opposite surfaces of the two outer plywoods, and the inner cavity surrounded by the three frames matches the shape of the inner plywood. Guide slots are provided on the top of the box body, and rollers and connecting blocks are provided on the bottom of the box body. The box body is slidably connected to the linear track of the frame through rollers, and the connecting block is fixedly connected to the chain of the sprocket chain transmission structure. A driving mechanism for driving the two plywood assemblies to approach or move away from each other is provided on the box body.

2. The feeding and clamping mechanism for a CNC machine tool according to claim 1, characterized in that: The drilling device includes a telescopic cylinder, a top plate, a horizontal guide rail, a sliding seat and a drilling motor. The cylinder seat of the telescopic cylinder is fixed on the workbench, the piston rod of the telescopic cylinder is fixedly connected to the top plate, the horizontal guide rail is arranged on the bottom surface of the top plate, the sliding seat is slidably connected to the bottom of the horizontal guide rail, the drilling motor is fixed under the sliding seat, and the output shaft of the drilling motor faces downward and is installed with a drill bit.

3. The feeding and clamping mechanism for a CNC machine tool according to claim 2, characterized in that: The drilling device is also provided with a soot blowing mechanism, which includes a metal hose and a nozzle. The metal hose is fixed on the top plate. One end of the metal hose is connected to the nozzle, and the nozzle is downward toward the drill bit of the drilling motor. The other end of the metal hose is connected to the air compressor.

4. The material feeding and clamping mechanism for a CNC machine tool according to claim 3, characterized in that: A material receiving box is provided at the bottom of the workbench, and the position of the material receiving box corresponds to the drilling device.

5. The material feeding and clamping mechanism for a CNC machine tool according to claim 4, characterized in that: The driving mechanism includes a servo motor arranged outside the box, a guide slide rail arranged inside the box, a bidirectional screw rod and two sliders. The guide slide rail is arranged at the bottom of the box, and the bidirectional screw rod is arranged parallel to the top of the guide slide rail. One end of the bidirectional screw rod is rotatably connected in the box, and the other end of the bidirectional screw rod passes through the box and is transmission connected to the output shaft of the servo motor. The left and right ends of the bidirectional screw rod respectively pass through the two sliders, and the two sliders are respectively slidably connected to the bidirectional screw rod through the nut pair of the bidirectional screw rod. The bottoms of the two sliders are both slidably connected to the guide slide rails, and the tops of the two sliders are fixedly connected with connecting rods, and the two connecting rods pass through the guide slot holes of the box and are respectively fixedly connected to the bottoms of the two outer splints.

6. The material feeding and clamping mechanism for a CNC machine tool according to claim 5, characterized in that: A motor protection shell is provided on the outside of the servo motor.

7. The material feeding and clamping mechanism for a CNC machine tool according to claim 6, characterized in that: Corresponding bolt holes are provided on the front and rear frames of the outer splint and on the front and rear side surfaces of the inner splint.

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