Automatic high-precision bidirectional punching and chamfering device

Abstract

The automatic high-precision bidirectional punching and chamfering device comprises a rack and a feeding frame, the lower end of the rack is connected with a support in a front-back moving mode, the support is provided with a clamp, the upper end, the lower end, the left end and the right end of the front face of the rack are provided with a first punching and chamfering mechanism, a second punching and chamfering mechanism, a third punching and chamfering mechanism and a fourth punching and chamfering mechanism respectively, and each punching and chamfering mechanism is provided with a punching and chamfering integrated cutter. A mounting table is arranged in the middle of the support, a clamp is arranged at the front end of the mounting table and comprises a bottom plate, a side plate, a limiting plate and a pressing plate, the pressing plate is connected to the upper portion of the bottom plate and the upper portion of the side plate in a lifting mode, an ejection mechanism is further arranged on the mounting table, and the limiting plate is arranged on the ejection mechanism. The feeding frame comprises a frame body, a conveying belt and a jacking mechanism, an output channel with the middle communicating with the conveying belt is further arranged on the frame body, a plurality of cross holes can be efficiently and accurately punched in a workpiece at equal intervals, chamfering is completed while punching is conducted, and machining automation and automatic feeding and discharging are achieved.

Description

Technical Field

[0001] The invention relates to an automated high-precision bidirectional punching and chamfering device. Background Art

[0002] At present, among the orders received by the factory, there are a number of customized orders, whose specific requirements are to drill two or more cross holes at equal distances on a rectangular wooden block, and the ends of each hole are required to be chamfered;

[0003] Although the processing of this kind of wooden workpiece is not difficult and can be made using general punching equipment and chamfering equipment, the order volume is large, the punching accuracy is high, and the market has a long-term demand for this kind of workpiece, which has caused some troubles in processing, specifically:

[0004] When using general equipment to process the workpiece, since the hole on the workpiece is required to be a cross hole, the drilling and chamfering processes need to be performed separately. On the one hand, the processing efficiency is low, and on the other hand, there will be certain errors in the concentricity of the holes and chamfers processed separately, and the processing accuracy is difficult to guarantee; on the other hand, when using general equipment to drill cross holes on the workpiece at equal distances, since the workpiece needs to be flipped for drilling, errors are prone to occur at the intersection of the axis line of the horizontal through hole in the cross hole and the axis line of the vertical through hole, and the processing accuracy of this process is also difficult to guarantee. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide an automated high-precision bidirectional punching and chamfering device, which is designed for the special needs of punching multiple cross holes at equal distances on a workpiece and requiring chamfering at the ends of each hole. It can realize automated feeding, punching, chamfering and unloading of the workpiece, and has the advantages of high processing efficiency and high punching accuracy.

[0006] The technical solution of the present invention is: an automated high-precision bidirectional punching and chamfering device, comprising a frame and a feeding frame, the lower end of the frame is connected to a bracket for forward and backward movement, the bracket is provided with a clamp, the upper and lower ends of the front face of the frame are respectively connected to a first punching and chamfering mechanism and a second punching and chamfering mechanism for lifting and lowering, the left and right ends of the front face of the frame are respectively connected to a third punching and chamfering mechanism and a fourth punching and chamfering mechanism for left and right movement, the tools of the first punching and chamfering mechanism and the second punching and chamfering mechanism are coaxially arranged, the tools of the third punching and chamfering mechanism and the fourth punching and chamfering mechanism are coaxially arranged, a punching drill is provided at the front end of the tool, and a chamfering cutter is provided on the tool behind the punching drill;

[0007] A mounting platform is provided in the middle of the bracket, and the fixture includes a bottom plate, a side plate and a pressure plate, and the bottom plate, the side plate and the pressure plate are respectively provided with a plurality of avoidance holes corresponding to each tool, the bottom plate is fixed to the front end of the mounting platform and its avoidance holes are exposed at the top of the mounting platform, the side plate is fixed to one side of the bottom plate, and a baffle is also fixed on the mounting platform on the side of the bottom plate away from the side plate, and the spacing between the side plate and the baffle corresponds to the width of the workpiece, the pressure plate is lifted and connected above the bottom plate and the side plate, and a first driving mechanism for driving the pressure plate to be lifted and lowered is also provided on the mounting platform;

[0008] The tools of the first punching and chamfering mechanism and the second punching and chamfering mechanism are staggered with the tools of the third punching and chamfering mechanism and the fourth punching and chamfering mechanism by a processing hole position;

[0009] A limit plate is also fixed on the mounting platform at the rear end of the bottom plate, the limit plate has a through hole, an ejection block is telescopically connected in the through hole, and the ejection block is connected to a second driving mechanism that drives the ejection block to telescope through a first connecting rod;

[0010] The feeding rack comprises a frame, a conveyor belt arranged on the top of the frame, guard plates respectively fixed on the top of the frame on both sides of the conveyor belt, and a push-in mechanism. The top of the frame is flush with the top of the mounting platform. The conveyor belt is transversely arranged in front of the frame. A plurality of rectangular workpieces are arranged on the conveyor belt. The height of the guard plate is greater than the height of the workpiece. An inverted "concave"-shaped baffle is also provided on one end of the conveyor belt close to the push-in mechanism. The workpiece behind the baffle is a double-layer workpiece.

[0011] The frame is also provided with an output channel, the outlet of the output channel is arranged corresponding to the position of the clamp, the output end of the conveyor belt is connected with the middle part of the output channel, the push-in mechanism is arranged at the rear end of the output channel, the push-in mechanism includes a push-in block telescopically connected in the output channel, and the push-in block is connected to a third driving mechanism that drives the push-in block to be telescopic through a second connecting rod;

[0012] When the workpiece is fed to the fixture, the bracket moves forward so that the front end of the bottom plate is in contact with the outlet of the output channel, the ejection block extends to push the workpiece in the output channel into the fixture and makes the rear end of the workpiece contact with the limit plate, and the pressing plate moves downward to press the workpiece so that the workpiece is firmly clamped in the fixture;

[0013] When punching a hole in a workpiece, the first punching chamfering mechanism, the second punching chamfering mechanism, the third punching chamfering mechanism and the fourth punching chamfering mechanism all punch half a hole in the workpiece, and two corresponding half holes are connected to form a through hole with chamfers at both ends;

[0014] When the first punching and chamfering mechanism and the second punching and chamfering mechanism process the second hole position of the workpiece, the third punching and chamfering mechanism and the fourth punching and chamfering mechanism process the first hole position of the workpiece;

[0015] After processing a workpiece, the pressure plate is lifted, and the ejector block is extended and retracted to eject the workpiece out of the fixture. The processed workpiece falls through the gap between the mounting table and the outlet of the output channel and is output.

[0016] Specifically, the mounting platform is a flat rectangular mounting platform.

[0017] Furthermore, the inner sides of the front ends of the side panels and the baffle bars are chamfered.

[0018] Furthermore, a convex strip corresponding to the stop strip is provided at the bottom of the pressure plate.

[0019] Furthermore, the first driving mechanism includes a cylinder fixed to the mounting platform by a fixing frame, a rotating shaft rotatably connected to the cylinder, and a motor box fixed to the mounting platform, a gear ring is fixed to the rear end of the rotating shaft, a notch corresponding to the gear ring is provided on the cylinder, a forward and reverse motor is provided in the motor box, a transmission gear is fixed on the output shaft of the forward and reverse motor, the transmission gear is meshed with the gear ring, a plurality of connecting arms are fixed to the front end of the rotating shaft, and ends of each connecting arm are respectively connected between each avoidance hole on the top of the pressure plate.

[0020] Specifically, the second driving mechanism and the third driving mechanism are both hydraulic cylinders.

[0021] Furthermore, the positions of the first punching and chamfering mechanism, the second punching and chamfering mechanism, the third punching and chamfering mechanism, and the fourth punching and chamfering mechanism on the frame are respectively adjustable.

[0022] Furthermore, a receiving hopper is fixed on the frame below the installation platform and the outlet of the output channel, and a discharge trough is connected below the receiving hopper.

[0023] Furthermore, the frame is provided with two support columns corresponding to the front end of the mounting platform, the tops of the two support columns are respectively provided with guide rails, and the bottom of the front end of the mounting platform is provided with sliders corresponding to the guide rails, and the sliders cooperate with the corresponding guide rails.

[0024] Furthermore, the frame body and the frame are connected as a whole, the frame body and the frame are covered with a shell, and the frame is also provided with a plurality of blowing nozzles.

[0025] The beneficial effects of the present invention are as follows: the present invention is designed for the special requirement of drilling a plurality of cross holes at equal distances on a workpiece and requiring chamfering at the ends of each hole, and can realize the automatic feeding, drilling and chamfering processing and discharging of the workpiece, and has the advantages of reasonable layout, fast processing cycle and high drilling accuracy;

[0026] The feed rack directly pushes the workpiece into the fixture, and the fixture limits the workpiece in all directions through the bottom plate, side plate, pressure plate, stop bar, limit plate and pressure plate. The clamping is reliable, which can ensure the position accuracy of the workpiece when it is pushed in, and ensure that there will be no displacement during the punching and chamfering process, thereby ensuring the accuracy of the workpiece punching and chamfering.

[0027] The first, second, third and fourth punching and chamfering mechanisms perform cross-operation and cooperate with the displacement of the bracket to process the previous hole and the next hole at the same time, with fast processing cycle and high efficiency; and each punching and chamfering mechanism punches half a hole when punching, and cooperates with the integrated drilling and chamfering tool. On the one hand, it can realize chamfering processing while drilling, and on the other hand, it can also ensure the accuracy of hole and chamfering processing. Finally, it is convenient to detect the punching accuracy of the workpiece during the later quality inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the front side of the present invention;

[0029] Figure 2 is a cross-sectional view of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the feeding rack in the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the clamp in the present invention;

[0032] Figure 5 is a top view of the clamp of the present invention after the pressure plate is removed;

[0033] Figure 6 It is a schematic diagram of the structure of the fixture of the present invention after clamping the workpiece;

[0034] Figure 7 A schematic structural diagram of the finished workpiece of the present invention.

[0035] In the figure: frame 1, feeding rack 2, bracket 3, clamp 4, first punching and chamfering mechanism 5, second punching and chamfering mechanism 6, third punching and chamfering mechanism 7, fourth punching and chamfering mechanism 8, mounting table 9, bottom plate 10, side plate 11, pressure plate 12, avoidance hole 13, baffle bar 14, workpiece 15, limit plate 16, ejection block 17, first connecting rod 18, guard plate 19, conveyor belt 20, baffle 21, output channel 22, ejection block 23, second connecting rod 24, convex strip 25, fixing frame 26, cylinder 27, rotating shaft 28, motor box 29, connecting arm 30, support column 31. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0037] Combination Figure 1-7 As shown, an automated high-precision bidirectional punching and chamfering device comprises a frame 1 and a feeding frame 2, the lower end of the frame 1 is connected to a bracket 3 for forward and backward movement, the bracket 3 is provided with a clamp 4, the upper and lower ends of the front face of the frame 1 are respectively connected to a first punching and chamfering mechanism 5 and a second punching and chamfering mechanism 6 for lifting and lowering, the left and right ends of the front face of the frame 1 are respectively connected to a third punching and chamfering mechanism 7 and a fourth punching and chamfering mechanism 8 for left and right movement, the tools of the first punching and chamfering mechanism 5 and the second punching and chamfering mechanism 6 are coaxially arranged, the tools of the third punching and chamfering mechanism 7 and the fourth punching and chamfering mechanism 8 are coaxially arranged, a punching drill is provided at the front end of the tool, and a chamfering cutter is provided on the tool behind the punching drill;

[0038] A mounting platform 9 is provided in the middle of the bracket 3, and the fixture 4 includes a bottom plate 10, a side plate 11 and a pressure plate 12. The bottom plate 10, the side plate 11 and the pressure plate 12 are respectively provided with a plurality of avoidance holes 13 corresponding to each tool. The bottom plate 10 is fixed to the front end of the mounting platform 9 and its avoidance holes 13 are exposed at the top of the mounting platform 9. The side plate 11 is fixed to one side of the bottom plate 10. A baffle 14 is also fixed on the mounting platform 9 on the side of the bottom plate 10 away from the side plate 11. The spacing between the side plate 11 and the baffle 14 corresponds to the width of the workpiece 15. The pressure plate 12 is connected to the bottom plate 10 and the side plate 11 above the bottom plate 10 and the side plate 11. The mounting platform 9 is also provided with a first driving mechanism for driving the pressure plate 12 to be lifted and lowered;

[0039] The tools of the first punching and chamfering mechanism 5 and the second punching and chamfering mechanism 6 and the tools of the third punching and chamfering mechanism 7 and the fourth punching and chamfering mechanism 8 are arranged at positions staggered with a pair of avoidance holes 13;

[0040] A limit plate 16 is also fixed on the mounting platform 9 at the rear end of the bottom plate 10. The limit plate 16 has a through hole. A push-out block 17 is telescopically connected in the through hole. The push-out block 17 is connected to a second driving mechanism that drives the push-out block 17 to be telescopic through a first connecting rod 18.

[0041] The feeding rack 2 includes a frame, a conveyor belt 20 arranged on the top of the frame, guard plates 19 respectively fixed on the top of the frame on both sides of the conveyor belt 20, and a push-in mechanism. The top of the frame is flush with the top of the mounting platform 9. The conveyor belt 20 is horizontally arranged in front of the frame 1. A plurality of rectangular workpieces 15 are arranged on the conveyor belt 20. The height of the guard plate 19 is greater than the height of the workpiece 15. An inverted "concave"-shaped baffle 21 is also provided on one end of the conveyor belt 20 close to the push-in mechanism. The workpiece 15 behind the baffle 21 is a double-layer workpiece. After the lower-layer workpiece 15 is output to a certain number, the workpiece 15 on the upper layer slides onto the conveyor belt 20 and continues to be output, which not only increases the number of workpieces 15 stored in the feeding rack 2, but also facilitates the robot arm or the operator to replenish the workpiece 15 to the feeding rack 2.

[0042] The frame is also provided with an output channel 22, the outlet of the output channel 22 is arranged corresponding to the position of the clamp 4, the output end of the conveyor belt 20 is connected with the middle part of the output channel 22, the push-in mechanism is arranged at the rear end of the output channel 22, the push-in mechanism includes a push-in block 23 telescopically connected in the output channel 22, and the push-in block 23 is connected to a third driving mechanism that drives the push-in block 23 to be telescopic through a second connecting rod 24;

[0043] When the workpiece 15 is fed to the fixture 4, the bracket 3 moves forward so that the front end of the bottom plate 10 is in contact with the outlet of the output channel 22, and the push-in block 23 extends to push the workpiece 15 in the output channel 22 between the bottom plate 10, the side plate 11 and the baffle plate so that the rear end of the workpiece 15 is in contact with the limit plate 16, and then the pressing plate 12 moves downward to press the workpiece 15 so that the workpiece 15 is firmly clamped in the fixture 4;

[0044] When punching a hole in the workpiece 15, the bracket 3 is reset, the first punching and chamfering mechanism 5 is raised and lowered once to punch a half hole in the first hole position of the workpiece 15, and then the second punching and chamfering mechanism 6 is raised and lowered once to punch the other half hole in the first hole position of the workpiece 15, so that the two halves of the first hole position are connected to form a vertical through hole, and the chamfering of both ends of the vertical through hole is completed; after the punching and chamfering of the first hole position is completed, the bracket 3 moves backward by one hole position, and the first punching and chamfering mechanism 5 and the second punching and chamfering mechanism 6 repeat the above actions to punch a hole in the second hole position of the workpiece 15;

[0045] When the first punching and chamfering mechanism 5 and the second punching and chamfering mechanism 6 process the second hole position, the third punching and chamfering mechanism 7 moves left and right once to punch half a hole in the first hole position of the workpiece 15, and then the fourth punching and chamfering mechanism 8 moves left and right once to punch the other half of the first hole position of the workpiece 15, so that the two halves of the first hole position intersect to form a horizontal through hole, and the chamfering of both ends of the horizontal through hole is completed, and the axis of the horizontal through hole intersects with the axis of the vertical through hole in a cross shape. At this point, the first hole position of the workpiece 15 is processed;

[0046] The first punching and chamfering mechanism 5, the second punching and chamfering mechanism 6, the third punching and chamfering mechanism 7, and the fourth punching and chamfering mechanism 8 repeat the above-mentioned actions in coordination with the displacement of the bracket 3 until the processing of each hole position of the workpiece 15 is completed. After the processing is completed, the pressing plate 12 rises, and the ejection block 17 is extended and retracted once to eject the workpiece 15 out of the fixture 4. The processed workpiece 15 falls from the gap between the mounting table 9 and the outlet of the output channel 22 to the discharge trough and is output.

[0047] It should be noted that the present invention is generally applicable to the punching and chamfering processing of wooden workpieces 15 .

[0048] The present invention is designed for the special requirement of drilling a plurality of cross holes at equal distances on a workpiece 15 and requiring chamfering at the ends of each hole. It can realize the automatic feeding, drilling, chamfering and discharging of the workpiece 15, and has the advantages of reasonable layout, fast processing cycle and high drilling accuracy.

[0049] Among them, the feed rack 2 directly pushes the workpiece 15 into the fixture 4, and the fixture 4 limits the workpiece 15 in all directions through the bottom plate 10, the side plate 11, the pressure plate 12, the stop bar, the limit plate 16 and the pressure plate 12, and the clamping is reliable, which can ensure the accuracy of the position of the workpiece 15 when it is pushed in, and ensure that no displacement occurs during the punching and chamfering process, thereby ensuring the accuracy of the punching and chamfering of the workpiece 15;

[0050] The first, second, third and fourth punching and chamfering mechanisms 5, 6, 7 and 8 perform cross-operation and cooperate with the displacement of the bracket 3 to process the previous hole position and the next hole position at the same time, with fast processing rhythm and high efficiency; and each punching and chamfering mechanism punches half a hole when punching, and cooperates with the integrated drilling and chamfering tool, on the one hand, it can realize the chamfering process while punching, and on the other hand, it can also ensure the accuracy of the hole and chamfering processing, and finally it is convenient to detect the punching accuracy of the workpiece 15 during the later quality inspection (if an error occurs in the process of punching the two corresponding half holes, there will be a visible misalignment at the junction of the two half holes).

[0051] Specific, combined Figure 2 and Figure 4 As shown, the mounting platform 9 is a flat rectangular mounting platform.

[0052] In another embodiment, in combination Figure 5 and Figure 6 As shown, the inner sides of the front ends of the side plates 11 and the baffle bars 14 are also chamfered to facilitate the workpiece 15 to enter between the side plates 11 and the baffle bars 14 .

[0053] In another embodiment, if Figure 6 As shown, a convex strip 25 corresponding to the stop strip is further provided at the bottom of the pressing plate 12 to further limit the clamped workpiece 15 .

[0054] In another embodiment, in combination Figure 1 , Figure 2 and Figure 4 As shown, the first driving mechanism includes a cylinder 27 fixed on the mounting platform 9 through a fixing frame 26, a rotating shaft 28 rotatably connected to the cylinder 27, and a motor box 29 fixed on the mounting platform 9, a gear ring is fixed to the rear end of the rotating shaft 28, a notch corresponding to the gear ring is provided on the cylinder 27, a forward and reverse motor is arranged in the motor box 29, a transmission gear is fixed on the output shaft of the forward and reverse motor, the transmission gear is meshed with the gear ring, a plurality of connecting arms 30 are fixed to the front end of the rotating shaft 28, and the ends of each connecting arm 30 are respectively connected between the avoidance holes 13 on the top of the pressure plate 12; the rotation of the rotating shaft 28 drives the connecting arm 30 to rotate, and the connecting arm 30 drives the pressure plate 12 to swing up and down, thereby realizing the lifting and pressing down of the pressure plate 12.

[0055] Specifically, the second driving mechanism 19 and the third driving mechanism are both hydraulic cylinders.

[0056] In another embodiment, in combination Figure 1 and Figure 2 As shown, the positions of the first punching and chamfering mechanism 5 , the second punching and chamfering mechanism 6 , the third punching and chamfering mechanism 7 , and the fourth punching and chamfering mechanism 8 on the frame 1 are respectively adjustable.

[0057] In another embodiment, a receiving hopper is fixed on the frame 1 below the outlet between the mounting platform 9 and the output channel 22, and a discharge trough is connected below the receiving hopper to collect the workpieces 15 ejected by the ejection block 17 and discharge the workpieces 15.

[0058] In another embodiment, if Figure 2 As shown, the frame 1 is also provided with two support columns 31 corresponding to the front end of the mounting platform 9, and the tops of the two support columns 31 are respectively provided with guide rails. The bottom of the front end of the mounting platform 9 is provided with sliders corresponding to the guide rails, and the sliders cooperate with the corresponding guide rails.

[0059] Specifically, the frame body and the frame 1 are connected as a whole, and the frame body and the frame 1 are covered with a shell. The frame 1 is also provided with a plurality of blowing nozzles to blow away the debris generated during the punching and chamfering process of the workpiece 15.

Claims

1. An automated high-precision bidirectional punching and chamfering device, comprising a frame (1) and a feeding frame (2), characterized in that: The lower end of the frame (1) is connected to a bracket (3) for forward and backward movement, and a clamp (4) is provided on the bracket (3). The upper and lower ends of the front face of the frame (1) are respectively connected to a first punching and chamfering mechanism (5) and a second punching and chamfering mechanism (6) for lifting and lowering, and the left and right ends of the front face of the frame (1) are respectively connected to a third punching and chamfering mechanism (7) and a fourth punching and chamfering mechanism (8) for left and right movement. The tools of the first punching and chamfering mechanism (5) and the second punching and chamfering mechanism (6) are coaxially arranged, and the tools of the third punching and chamfering mechanism (7) and the fourth punching and chamfering mechanism (8) are coaxially arranged, and a punching drill is provided at the front end of the tool, and a chamfering knife is provided on the tool behind the punching drill; A mounting platform (9) is provided in the middle of the bracket (3); the fixture (4) comprises a bottom plate (10), a side plate (11) and a pressure plate (12); the bottom plate (10), the side plate (11) and the pressure plate (12) are respectively provided with a plurality of avoidance holes (13) corresponding to each tool; the bottom plate (10) is fixed to the front end of the mounting platform (9) and its avoidance holes (13) are exposed at the top of the mounting platform (9); the side plate (11) is fixed to one side of the bottom plate (10); a stop bar (14) is also fixed to the mounting platform (9) on the side of the bottom plate (10) away from the side plate (11); the spacing between the side plate (11) and the stop bar (14) corresponds to the width of the workpiece (15); the pressure plate (12) is connected to the bottom plate (10) and the side plate (11) for lifting; and a first driving mechanism for driving the pressure plate (12) to lift is also provided on the mounting platform (9); The tool is staggered with the third punching and chamfering mechanism (7) and the fourth punching and chamfering mechanism (8) at a processing hole position; A limit plate (16) is also fixed on the mounting platform (9) at the rear end of the base plate (10), the limit plate (16) having a through hole, an ejection block (17) being telescopically connected in the through hole, the ejection block (17) being connected to a second driving mechanism for driving the ejection block (17) to telescope through a first connecting rod (18); The feeding frame (2) comprises a frame body, a conveyor belt (20) arranged on the top of the frame body, guard plates (19) respectively fixed on the top of the frame body on both sides of the conveyor belt (20), and a push-in mechanism, the top of the frame body is flush with the top of the mounting platform (9), the conveyor belt (20) is transversely arranged in front of the frame (1), a plurality of rectangular parallelepiped workpieces (15) are arranged on the conveyor belt (20), the height of the guard plate (19) is greater than the height of the workpiece (15), and an inverted "concave" shaped baffle (21) is also provided on one end of the conveyor belt (20) close to the push-in mechanism, and the workpiece (15) behind the baffle (21) is a double-layer workpiece; The frame is also provided with an output channel (22), the outlet of the output channel (22) is arranged corresponding to the position of the clamp (4), the output end of the conveyor belt (20) is connected to the middle part of the output channel (22), the push-in mechanism is arranged at the rear end of the output channel (22), the push-in mechanism comprises a push-in block (23) telescopically connected in the output channel (22), and the push-in block (23) is connected to a third driving mechanism for driving the push-in block (23) to be telescopic through a second connecting rod (24); When the workpiece (15) is fed to the fixture (4), the support (3) moves forward so that the front end of the bottom plate (10) contacts the outlet of the output channel (22), the push-in block (23) extends to push the workpiece (15) in the output channel (22) into the fixture (4) and makes the rear end of the workpiece (15) contact the limit plate (16), and the pressing plate (12) moves downward to press the workpiece (15) so that the workpiece (15) is firmly clamped in the fixture (4); When punching a hole in a workpiece (15), the first punching and chamfering mechanism (5), the second punching and chamfering mechanism (6), the third punching and chamfering mechanism (7) and the fourth punching and chamfering mechanism (8) all punch a half hole in the workpiece (15), and two corresponding half holes are connected to form a through hole with chamfers at both ends; When the first punching and chamfering mechanism (5) and the second punching and chamfering mechanism (6) process the second hole position of the workpiece (15), the third punching and chamfering mechanism (7) and the fourth punching and chamfering mechanism (8) process the first hole position of the workpiece (15); After processing a workpiece, the pressing plate (12) is lifted, and the ejection block (17) is extended and retracted to eject the workpiece (15) out of the fixture (4). The processed workpiece (15) falls from the gap between the mounting table (9) and the outlet of the output channel (22) and is output.

2. The automatic high-precision bidirectional punching and chamfering device according to claim 1, characterized in that: The mounting platform (9) is a flat rectangular mounting platform.

3. The automatic high-precision bidirectional punching and chamfering device according to claim 2, characterized in that: The inner sides of the front ends of the side plates (11) and the blocking strips (14) are also chamfered.

4. The automatic high-precision bidirectional punching and chamfering device according to claim 3 is characterized in that: The bottom of the pressure plate (12) is also provided with a convex strip (25) corresponding to the stop strip.

5. The automatic high-precision bidirectional punching and chamfering device according to claim 4, characterized in that: The first driving mechanism comprises a cylinder (27) fixed on the mounting platform (9) through a fixing frame (26), a rotating shaft (28) rotatably connected to the cylinder (27), and a motor box (29) fixed on the mounting platform (9), a gear ring being fixed at the rear end of the rotating shaft (28), a notch corresponding to the gear ring being provided on the cylinder (27), a forward and reverse motor being arranged in the motor box (29), a transmission gear being fixed on the output shaft of the forward and reverse motor, the transmission gear being meshed with the gear ring, a plurality of connecting arms (30) being fixed at the front end of the rotating shaft (28), the ends of each connecting arm (30) being respectively connected between each avoidance hole (13) at the top of the pressure plate (12).

6. The automatic high-precision bidirectional punching and chamfering device according to claim 5, characterized in that: The second driving mechanism (19) and the third driving mechanism are both hydraulic cylinders.

7. The automatic high-precision bidirectional punching and chamfering device according to claim 6, characterized in that: The positions of the first punching and chamfering mechanism (5), the second punching and chamfering mechanism (6), the third punching and chamfering mechanism (7), and the fourth punching and chamfering mechanism (8) on the frame (1) are respectively adjustable.

8. The automatic high-precision bidirectional punching and chamfering device according to claim 7, characterized in that: A material receiving hopper is fixed on the frame (1) below the outlet between the mounting platform (9) and the output channel (22), and a material discharging trough is connected below the material receiving hopper.

9. The automatic high-precision bidirectional punching and chamfering device according to claim 8, characterized in that: The frame (1) is also provided with two support columns (31) corresponding to the front end of the mounting platform (9), and the tops of the two support columns (31) are respectively provided with guide rails, and the bottom of the front end of the mounting platform (9) is provided with sliders corresponding to the guide rails, and the sliders cooperate with the corresponding guide rails.

10. The automatic high-precision bidirectional punching and chamfering device according to claim 9, characterized in that: The frame body and the frame (1) are connected as a whole; the frame body and the frame (1) are covered with an outer shell; and the frame (1) is also provided with a plurality of blowing nozzles.

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