Numerical control drilling and tapping center machine

Abstract

The invention discloses a numerical control drilling and tapping center machine, and relates to the technical field of drilling and tapping center machines. The surface of the bottom table is fixedly connected with a workbench, the side face of the bottom table is fixedly connected with a supporting column, the side face of the supporting column is provided with a drilling and tapping mechanism, the side face of the supporting column is provided with a tool changing frame, and the supporting column is fixedly connected with a liquid conveying pipe; during use, high-pressure air is input into the air injection boxes, when the air injection box on the left side rotates clockwise, the air wall pushes chippings on a workpiece leftwards, and when the air injection box on the right side rotates anticlockwise, the chippings on the workpiece are pushed by the air wall leftwards. The air wall pushes chippings on the workpiece rightwards, the surface of the workpiece can be cleaned under the condition that normal machining of the drilling and tapping mechanism is not interfered, and the situation that the working efficiency is affected due to shutdown cleaning is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling and tapping centers, in particular to a numerically controlled drilling and tapping center. Background Art

[0002] When the drilling and tapping center is working, the metal debris caused by drilling and milling the workpiece will remain on the surface of the workpiece. In order to prevent the metal debris from affecting the quality of the product after drilling and tapping, when there are too many metal debris on the workpiece surface, it is necessary to brush the debris off the workpiece surface with a brush. In the existing equipment, a brush plate is moved back and forth on the workpiece surface to perform debris cleaning operations. Since the brush plate collides with the drilling and tapping tool when it moves, when cleaning the debris, the equipment must be stopped, the tool must be moved up, and then the brush plate must be used to reciprocate to remove the debris. Each time the brush plate is used to clean the debris, the drilling center processing operation must be stopped, which reduces the drilling and tapping efficiency. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings in the prior art that when cleaning debris on the surface of a workpiece, the movement of the brush interferes with the normal processing of the drilling and tapping mechanism, thereby reducing the working efficiency of the drilling and tapping center, and to propose a CNC drilling and tapping center.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A CNC drilling and tapping center is designed, including a base, the surface of the base is fixedly connected to a workbench, the side of the base is fixedly connected to a support column, a drilling and tapping mechanism is arranged on the side of the support column, a tool changing rack is arranged on the side of the support column, and an infusion tube is fixedly connected to the support column, and also includes an air wall chip pushing assembly, the air wall chip pushing assembly includes two support tables, the support table is fixedly connected to the workbench, two U-shaped frames are symmetrically fixedly connected to the side of the workbench, two rotating rods are symmetrically connected for rotation between the two U-shaped frames, an arc-shaped rack is rotatably connected to the support table, two driven gears are symmetrically fixedly connected to the peripheral side of the rotating rod, the driven gear is meshed with the arc-shaped rack, the peripheral side of the rotating rod is fixedly connected to a rotating table, and the end of the rotating table is fixedly connected to an injection box.

[0006] Preferably, two grooves are symmetrically provided on the surface of the workbench, a chip collecting bucket is fixedly connected in the groove, and the chip collecting bucket is open on a side close to the support platform.

[0007] Preferably, the workbench surface is fixedly connected to a support plate, the side of the support plate is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating shaft, the end of the rotating shaft is fixedly connected to a driving gear, and the driving gear is meshed with an arc-shaped rack.

[0008] Preferably, the workbench surface is fixedly connected to an L-shaped plate, a cross bar is fixedly connected between the arc-shaped racks, an ear block is fixedly connected to the cross bar facing the L-shaped plate, a steel cable is fixedly connected between the two ear blocks, a mounting plate is fixedly connected to the side of the L-shaped plate, two round rods are symmetrically connected to the mounting plate for rotation, the ends of the round rods are fixedly connected to limiting wheels, a slider is fixedly connected to the steel cable, and an intermittent jet assembly is fixedly connected to the side of the mounting plate.

[0009] Preferably, the intermittent jet assembly includes an air guide box, which is fixedly connected to the mounting plate, an air pump fixedly connected to the surface of the air guide box, a ventilation groove is provided in the air guide box, the output end of the air pump is connected to the ventilation groove, the ventilation groove is U-shaped, a slide is slidably connected to the air guide box, an air guide block is symmetrically fixedly connected to the slide, an opening is provided between the air guide block and the slide, and an intermittent jet component is fixedly connected to the side of the slide.

[0010] Preferably, the intermittent jet component includes a guide rail, the guide rail is fixedly connected to the slide bar, the slider and the guide rail are slidably matched, an air guide chamber is provided on the side of the air guide box, and a hose is provided between the air guide chamber and the air guide block.

[0011] Preferably, a plurality of air jets are evenly connected and arranged on the bottom surface of the air jet box.

[0012] Preferably, two straight rods are symmetrically fixedly connected to the U-shaped frame, the ends of the straight rods are fixedly connected to limiting sleeves, the limiting sleeves are adapted to the arc-shaped racks, and the bottom surface of the base is symmetrically fixedly connected to a base, which is made of rubber.

[0013] Preferably, baffles are fixedly connected to two opposite side surfaces of the mounting plate, and the sliding bar abuts against the baffles.

[0014] The CNC drilling and tapping center proposed by the present invention has the following beneficial effects:

[0015] The present invention drives two jet boxes to swing back and forth along the axis of their corresponding driven gears through the reciprocating rotation of the arc-shaped rack. The jet boxes themselves do not interfere with the operation of the drilling and tapping mechanism during the swinging. High-pressure gas forms an air wall that exceeds the center line of the workpiece and is ejected from the jet box. As the jet box swings back and forth, it can cover and clean the debris on the surface of the workpiece without interfering with the operation of the drilling and tapping mechanism, thereby improving the working efficiency of the drilling and tapping center.

[0016] The present invention pushes some debris to its original position when the air wall swings toward the workpiece position. The jet box can be connected to its corresponding ventilation groove only when it moves outward from the center position of the workbench. When the jet box moves to the highest position, the ventilation groove is connected to another jet box. During use, only the air wall will appear from the inside to the outside, which can prevent the air wall from pushing the debris back when moving from the outside to the inside, thereby further improving the cleaning ability of the debris on the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a structural diagram of a CNC drilling and tapping center.

[0018] Figure 2 This is an assembly diagram of the arc rack and gear of the present invention.

[0019] Figure 3 This is the assembly diagram of the lug, steel cable and slider of the present invention

[0020] Figure 4 This is an assembly diagram of the slide bar and the air guide box of the present invention.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the air guide box of the present invention.

[0022] Figure 6 It is the assembly diagram of the slider and guide rail of the present invention.

[0023] Figure 7 It is an assembly diagram of the hose and the air guide chamber of the present invention.

[0024] Figure 8 This is an assembly diagram of the air guide block and the slide bar of the present invention.

[0025] Figure 9 This is an assembly diagram of the drive gear and arc rack of the present invention.

[0026] Figure 10 This is an assembly diagram of the workbench and chip collecting bucket of the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Base; 2. Workbench; 3. Support column; 4. Drilling and tapping mechanism; 5. Tool changer; 6. Infusion tube; 7. Support platform; 8. U-shaped frame; 9. Curved rack; 10. Rotating rod; 11. Driven gear; 12. Rotating table; 13. Jet box; 14. Groove; 15. Chip bucket; 16. Support plate; 17. Motor; 18. Drive gear; 19. L-shaped plate; 20. Cross bar; 21. Ear block; 22. Steel cable; 23. Mounting plate; 24. Air guide box; 25. Limiting wheel; 26. Slider; 27. Slide; 28. Air guide block; 29. ​​Straight rod; 30. Baffle; 31. Guide rail; 32. Hose; 33. Air guide chamber; 34. Limiting sleeve; 35. Round rod; 36. Air pump; 37. Ventilation groove; 38. Air nozzle; 39. Base. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Example 1

[0031] Reference Figure 1-10 The present invention is a CNC drilling and tapping center machine, including a base 1, a workbench 2 is fixedly connected to the surface of the base 1, a support column 3 is fixedly connected to the side of the base 1, a drilling and tapping mechanism 4 is arranged on the side of the support column 3, a tool changer 5 is arranged on the side of the support column 3, and an infusion tube 6 is fixedly connected to the support column 3. It also includes an air wall chip pushing assembly, which includes two support platforms 7, the support platform 7 is fixedly connected to the workbench 2, two U-shaped frames 8 are symmetrically fixedly connected to the side of the workbench 2, and two rotating rods 10 are symmetrically connected to the two U-shaped frames 8 for rotation. An arc-shaped rack 9 is rotatably connected to the support platform 7, and two driven gears 11 are symmetrically fixedly connected to the side of the rotating rod 10. The driven gear 11 is meshed with the arc-shaped rack 9, and a rotating table 12 is fixedly connected to the side of the rotating rod 10. The end of the rotating table 12 is fixedly connected to the jet box 13.

[0032] The operation process of this embodiment is as follows: during the process of machining a workpiece, the workpiece is placed at the center of the workbench 2 and fixed by a fixture. The tool in the drilling and tapping mechanism 4 drills or taps the workpiece. When the tool is overheated, the tool changer 5 replaces the tool on the drilling and tapping mechanism 4. When the tool is machining, coolant is input into the infusion pipe 6, and the coolant is output from the infusion pipe 6 toward the tool position to dissipate heat from the tool.

[0033] In actual use, because the debris produced by drilling and milling will be retained on the surface of the workpiece, thus affecting the normal processing of the workpiece, in order to avoid collision with the tool, the current equipment needs to stop the drilling and tapping mechanism 4 and use a brush to move back and forth on the workpiece surface to achieve a cleaning effect. In this way, the device needs to be stopped, thereby slowing down the processing rate. When in use, the device reciprocates and rotates the two arc-shaped racks 9 synchronously on the support table 7. Since the driven gear 11 and the arc-shaped rack 9 are meshed with each other, as shown in FIG. Figure 2 As shown, high-pressure airflow is input into the jet box 13, and the arc-shaped rack 9 reciprocates to drive the driven gear 11 to reciprocate. The rotation of the driven gear 11 drives the rotating rod 10 and the rotating table 12 to reciprocate. The rotation of the rotating table 12 drives the jet box 13 to reciprocate on the workbench 2. The jet box 13 crosses the center line of the workbench 2 during each unidirectional swing, and the air wall formed extends at least 10 mm beyond the edge of the workpiece.

[0034] During the processing of the workpiece, debris will remain on the surface of the workpiece. In order to avoid collision with the tool, the machine needs to be stopped and then brushed back and forth by a brush. The device uses a jet box 13 to form an air wall, which swings following the reciprocating rotation of the driven gear 11, and crosses the center line of the worktable 2 each time it swings. The air wall pushes the debris on the surface of the workpiece from right to left and then from left to right. The jet box 13 does not pass through the center line of the worktable 2 when moving. The drilling and tapping mechanism 4 is located directly above the center line of the worktable 2 when working. By crossing the two air walls of the center line of the worktable 2, air walls from left to right and from right to left are formed, which can clear the debris on the workpiece located at the center of the worktable 2 without contacting the drilling and tapping mechanism 4. Therefore, the debris produced on the surface of the workpiece can be continuously cleaned during the processing of the workpiece without stopping the machine for cleaning, thereby speeding up the work efficiency of workpiece processing.

[0035] Example 2

[0036] In actual use, the two arc-shaped racks 9 need to rotate synchronously, and each time the jet box 13 swings, it needs to cross the center line of the workbench 2, which makes the operation more difficult. In addition, the blown debris will be thrown out, causing damage to the surrounding hygiene. Cleaning the thrown debris requires extra time. For this reason, please refer to Figure 1-4On the basis of the specific embodiment 1, two grooves 14 are symmetrically opened on the surface of the workbench 2, and a chip collecting bucket 15 is fixedly connected in the groove 14. The chip collecting bucket 15 is open on the side close to the support platform 7. A support plate 16 is fixedly connected to the surface of the workbench 2, and a motor 17 is fixedly connected to the side of the support plate 16. The output end of the motor 17 is fixedly connected to a rotating shaft, and the end of the rotating shaft is fixedly connected to a driving gear 18. The driving gear 18 is meshed with an arc-shaped rack 9. An L-shaped plate 19 is fixedly connected to the surface of the workbench 2, and a cross bar 20 is fixedly connected between the arc-shaped racks 9. The cross bar 20 is fixedly connected to an ear block 21 on the side facing the L-shaped plate 19, and a steel cable 22 is fixedly connected between the two ear blocks 21. A mounting plate 23 is fixedly connected to the side of the L-shaped plate 19. Two round rods 35 are symmetrically connected to the mounting plate 23 for rotation. The ends of the round rods 35 are fixedly connected to the limiting wheels 25, and the steel cables 22 are fixedly connected to the sliders 26. An intermittent jet assembly is fixedly connected to the side of the mounting plate 23.

[0037] The operation process of this embodiment is as follows: the motor 17 drives the driving gear 18 to rotate back and forth. Since the cross bar 20 is fixed between the two arc-shaped racks 9, the driving gear 18 drives the two arc-shaped racks 9 and the cross bar 20 to rotate back and forth synchronously along the axis. The two arc-shaped racks 9 rotate back and forth synchronously. Each time they rotate, they drive the two jet boxes 13 to swing, and the air wall ejected during the swing passes over the center line of the workbench 2. The jet box 13 on the left is as shown in FIG. Figure 2 As shown, when swinging from right to left, the ejected air wall pushes the debris on the surface of the workpiece from right to left until the debris is pushed into the chip collecting bucket 15. A buffer baffle is provided in the chip collecting bucket 15 to buffer the incoming debris. Similarly, when the jet box 13 on the right side swings from left to right, the ejected air wall also pushes the debris on the surface of the workpiece from left to right until it is pushed into the chip collecting bucket 15 on the right. The air walls ejected by the two jet boxes 13 swing back and forth, which can continuously clean the debris on the surface of the workpiece, thereby completing the debris cleaning on the surface of the workpiece without stopping the machine.

[0038] Example 3

[0039] As can be seen from Example 2, the air walls ejected by the two jet boxes 13 push the debris on the surface of the workpiece from right to left and from left to right, and can continuously clean the debris on the surface of the workpiece without stopping the machine. However, during this working process, high-pressure gas is continuously introduced into the jet box 13, and the jet box 13 moves back and forth and ejects air walls. The air walls swing on the surface of the workpiece. During the outward swing, the air walls can push out the debris on the surface of the workpiece. However, when the air walls swing toward the center of the worktable 2, the air walls will also push the debris that has not been completely pushed away to the center of the workpiece, thereby weakening the cleaning effect of the debris on the surface of the workpiece. For this reason, please refer to Figure 4-8On the basis of the first specific embodiment, the intermittent jet component includes a guide rail 31, which is fixedly connected to the slide bar 27, and the slider 26 slides with the guide rail 31. An air guide chamber 33 is provided on the side of the air guide box 24, and a hose 32 is provided between the air guide chamber 33 and the air guide block 28. A plurality of air nozzles 38 are evenly connected on the bottom surface of the jet box 13. Two straight rods 29 are symmetrically fixedly connected to the U-shaped frame 8. The ends of the straight rods 29 are fixedly connected to the limiting sleeves 34. The limiting sleeves 34 are adapted to the arc-shaped rack 9. The bottom surface of the base 1 is symmetrically fixedly connected with a base 39, and the base 39 is made of rubber. Baffles 30 are fixedly connected to the two opposite sides of the mounting plate 23. The slide bar 27 abuts against the baffle 30, and the limiting sleeves 34 limit the maximum movement of the arc-shaped rack 9.

[0040] The operation process of this embodiment is as follows: Figure 6 As shown, the initial position of the slider 26 is at the rightmost end of the guide rail 31, and the slide bar 27 is against the baffle 30 on the right side of the mounting plate 23. In this state, the positions of the various jet boxes 13 are as shown in FIG. Figure 1 、 2 As shown in , at this time, the motor 17 drives the gear 18 to rotate, and the rotation of the gear drives the arc-shaped rack 9 to rotate clockwise. After the steel cable 22 passes through the limiting wheel 25, both ends are fixedly connected to the ear blocks 21. During the clockwise rotation of the arc-shaped rack 9, the steel cable 22 is driven to move. The movement of the steel cable 22 drives the slider 26 to move from right to left in the guide rail 31, and the two jet boxes 13 rotate clockwise, as shown in FIG. Figure 5 As shown, at this time, the air pump 36 inputs high-pressure air into the air guide box 24. When the slide 27 contacts the baffle 30 on the right side of the mounting plate 23, the ventilation groove 37 is only connected to the air guide block 28 on the right side. As the arc-shaped rack 9 rotates clockwise, the two jet boxes 13 are driven to swing clockwise. During the swinging process, the slide 27 always keeps in contact with the baffle 30 on the right side of the mounting plate 23. That is, during the clockwise swinging of the jet box 13, the high-pressure gas can only enter the air guide block 28 on the right side through the ventilation groove 37 in the air guide box 24, and enter the jet box 13 on the left side of the workbench 2 through the hose 32, forming an air wall to push out the debris on the surface of the workpiece from right to left.

[0041] When the slider 26 moves to the end of the guide rail 31, it continues to move to push the guide rail 31 to drive the slide bar 27 and the air guide block 28 to move in the air guide box 24;

[0042] Since the driven gear 11 always keeps meshing with the arc-shaped rack 9, that is, the two jet boxes 13 always keep the angle with the workbench 2 consistent, when the jet box 13 on the left side swings clockwise to the maximum angle, the slide 27 abuts against the baffle 30 on the left side of the mounting plate 23, and the vent groove 37 is connected with the air guide block 28 on the left side. The high-pressure gas is connected to the jet box 13 on the right side through the vent groove 37, the air guide block 28, and the hose 32. At this time, the air wall formed on the right side crosses the center line of the workbench 2, and the arc-shaped rack 9 rotates counterclockwise. The jet box 13 on the right side of the workbench 2 swings to the right, and the air wall formed pushes the debris on the surface of the workpiece toward the chip collecting bucket 15 on the right side. Although the jet box 13 on the left side also swings to the right The two jet boxes 13 are swung back and forth, but during the swinging process, no air wall is ejected from the jet box 13 on the left. As the jet box 13 moves, the slider 26 moves to the right. When the slider 26 moves to the right end of the guide rail 31, the guide rail 31 and the slide bar 27 are pushed to move again until the slide bar 27 contacts the baffle 30 on the right side of the mounting plate 23. At this time, the ventilation direction is changed again. When the two jet boxes 13 swing back and forth, the left jet box 13 is always kept in a ventilation state when swinging to the left. When the jet box 13 swings to the left to the maximum value, the ventilation is switched to the right jet box 13. The air wall formed by the right jet box 13 crosses the center line of the workbench 2, and then the air wall formed by the right jet box 13 pushes away the debris from right to left.

[0043] When in use, the two jet boxes 13 swing back and forth synchronously. When swinging to the left, only the jet box 13 on the left can spray out an air wall, and the air wall pushes away the debris on the workpiece from right to left. When swinging to the right, only the jet box 13 on the right can spray out an air wall, and the air wall pushes away the debris on the workpiece from left to right. The air wall always keeps moving from the inside of the workpiece toward the chip collecting bucket 15, which can prevent the reciprocating swinging air wall from pushing part of the debris back to the workpiece surface during the movement toward the center position of the worktable 2, thereby further improving the ability to clean the debris on the workpiece surface during the processing.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A CNC drilling and tapping center, comprising a base (1), a workbench (2) fixedly connected to the surface of the base (1), a support column (3) fixedly connected to the side of the base (1), a drilling and tapping mechanism (4) provided on the side of the support column (3), characterized in that: The invention also includes an air wall chip pushing assembly, which includes two support platforms (7), the support platforms (7) are fixedly connected to the workbench (2), two U-shaped frames (8) are symmetrically fixedly connected to the side of the workbench (2), two rotating rods (10) are symmetrically rotatably connected between the two U-shaped frames (8), an arc-shaped rack (9) is rotatably connected to the support platform (7), two driven gears (11) are symmetrically fixedly connected to the side of the rotating rod (10), the driven gears (11) are meshed with the arc-shaped rack (9), the rotating rod (10) is fixedly connected to the side of the rotating rod (10), and the end of the rotating rod (12) is fixedly connected to the rotating platform (12).

2. A CNC drilling and tapping center according to claim 1, characterized in that: Two grooves (14) are symmetrically formed on the surface of the workbench (2), a chip collecting bucket (15) is fixedly connected in the groove (14), and the chip collecting bucket (15) is open on a side close to the support platform (7).

3. A CNC drilling and tapping center according to claim 2, characterized in that: The surface of the workbench (2) is fixedly connected to a support plate (16), the side of the support plate (16) is fixedly connected to a motor (17), the output end of the motor (17) is fixedly connected to a rotating shaft, the end of the rotating shaft is fixedly connected to a driving gear (18), and the driving gear (18) is meshed with an arc-shaped rack (9).

4. A CNC drilling and tapping center according to claim 2, characterized in that: An L-shaped plate (19) is fixedly connected to the surface of the workbench (2), a cross bar (20) is fixedly connected between the arc-shaped racks (9), an ear block (21) is fixedly connected to the side of the cross bar (20) facing the L-shaped plate (19), a steel cable (22) is fixedly connected between the two ear blocks (21), a mounting plate (23) is fixedly connected to the side of the L-shaped plate (19), two round rods (35) are symmetrically connected to the mounting plate (23), the ends of the round rods (35) are fixedly connected to the limiting wheels (25), a slider (26) is fixedly connected to the steel cable (22), and an intermittent jet assembly is fixedly connected to the side of the mounting plate (23).

5. The CNC drilling and tapping center according to claim 4, characterized in that: The intermittent jet assembly includes an air guide box (24), the air guide box (24) is fixedly connected to the mounting plate (23), an air pump (36) is fixedly connected to the surface of the air guide box (24), a ventilation groove (37) is provided in the air guide box (24), an output end of the air pump (36) is connected to the ventilation groove (37), the ventilation groove (37) is U-shaped, a slide bar (27) is slidably connected to the air guide box (24), an air guide block (28) is symmetrically fixedly connected to the slide bar (27), an opening is provided between the air guide block (28) and the slide bar (27), and an intermittent jet component is fixedly connected to the side of the slide bar (27).

6. The CNC drilling and tapping center according to claim 5, characterized in that: The intermittent jetting component includes a guide rail (31), the guide rail (31) is fixedly connected to the slide bar (27), the slider (26) and the guide rail (31) are slidably matched, the side of the air guide box (24) is connected to an air guide chamber (33), and a hose (32) is connected between the air guide chamber (33) and the air guide block (28).

7. The CNC drilling and tapping center according to claim 1, characterized in that: The bottom surface of the jet box (13) is evenly connected and provided with a plurality of jet nozzles (38).

8. The CNC drilling and tapping center according to claim 1, characterized in that: Two straight rods (29) are symmetrically fixedly connected to the U-shaped frame (8), and the ends of the straight rods (29) are fixedly connected to limit sleeves (34). The limit sleeves (34) are adapted to the arc-shaped rack (9). The bottom surface of the base (1) is symmetrically fixedly connected to a base (39), and the base (39) is made of rubber.

9. The CNC drilling and tapping center according to claim 5, characterized in that: Two opposite side surfaces of the mounting plate (23) are fixedly connected with baffles (30), and the slide bar (27) abuts against the baffles (30).

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