Adjustable guitar drilling equipment

Abstract

The present invention relates to the technical field of guitar processing, and in particular to an adjustable guitar processing drilling device, comprising a cylindrical hole opener and a vertically arranged mounting tube, wherein the top of the mounting tube is rotatably connected to a load-bearing plate, and the upper surface of the load-bearing plate is connected to the output end of a cylinder, so that the load-bearing plate and the mounting tube can be raised and lowered; the hole opening method provided by the present invention can continuously complete the hole opening, grinding and chamfering of a thin plate when drilling a hole in a guitar, and there is no need to stop the machine to replace tools during processing, thereby saving the time required for tool replacement, and the present invention can simultaneously grind both ends of the hole by clamping a first roller-shaped grinding wheel and a second roller-shaped grinding wheel on the hole, and there is no need for workers to flip the thin plate back and forth during processing, thereby reducing the labor intensity of workers.

Description

Technical Field

[0001] The invention relates to the technical field of guitar processing, in particular to an adjustable punching device for guitar processing. Background Art

[0002] The sound holes of guitars are currently mostly drilled by drilling machines and then cut by wire saws. This method can easily cause cracks in the thin plate and the processed round holes are relatively rough, requiring subsequent polishing. The polishing steps are as follows: After the holes are drilled, the workers use a trimming tool to clean the burrs on the edges of the holes on both sides of the thin plate. After the burrs are cleaned, a grinder is used to grind and chamfer the edges at both ends of the holes. During the above-mentioned sound hole opening process, the workers have to change tools many times, which increases the processing time. During the processing of both ends of the holes, the workers need to flip the thin plates back and forth, which increases the labor intensity of the workers. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of low efficiency and high labor intensity in opening guitar sound holes in the prior art, and to propose an adjustable guitar processing punching device.

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

[0005] Design an adjustable guitar processing punching device, including a cylindrical hole opener and a vertically arranged mounting tube, the top of the mounting tube is rotatably connected to a load-bearing plate, and the upper surface of the load-bearing plate is connected to the output end of a cylinder, so that the load-bearing plate and the mounting tube can be raised and lowered;

[0006] A driving structure is provided on the load-bearing plate to drive the installation tube to rotate. A square tube is vertically fixed on the inner axis of the installation tube. A square sliding tube is slidably matched in the square tube. A thin plate-shaped permanent magnet is horizontally fixed in the sliding tube. A joint is fixed on the top of the hole opener. The joint is slidably matched with the sliding tube, and the joint is magnetically adsorbed on the permanent magnet.

[0007] A plurality of grinding structures are fixedly connected at equal intervals on the outer wall of the square tube. The grinding structure includes a back plate, and slide grooves are fixedly connected horizontally on both sides of the back plate. Slide blocks are slidably connected in the slide grooves. A connecting plate is fixedly connected vertically on the slide block. A first gear and a second gear are rotatably connected on the connecting plate. The first gear is located above the second gear, and the first gear and the second gear are meshed with each other, wherein:

[0008] A first fixing plate is fixedly connected to the end surface of the first gear, a first short shaft is rotatably connected to the first fixing plate, an axis of the first short shaft intersects with the axis of the first gear, and a first roller-shaped grinding wheel is fixedly connected to the first short shaft coaxially;

[0009] A second fixing plate is fixedly connected to the end surface of the second gear, a second short shaft is rotatably connected to the second fixing plate, the axis of the second short shaft intersects with the axis of the second gear, and a second roller grinding wheel is fixedly connected to the second short shaft coaxially.

[0010] Preferably, the outer diameter of the mounting tube is smaller than the outer diameter of the hole opener, and a plurality of slots are provided on the tube wall of the mounting tube, the slots corresponding to the grinding structures one by one to accommodate the first roller-shaped grinding wheel and the second roller-shaped grinding wheel to pass through.

[0011] Preferably, the driving structure includes a motor, which is vertically fixed to the middle of the load-bearing plate, a central gear is fixed to the output shaft of the motor, a ring gear is fixed to the inside of the mounting tube, the ring gear is sleeved on the central gear, and the axis of the ring gear coincides with the axis of the central gear, a planetary carrier is horizontally fixed to the inside of the mounting tube, a plurality of planetary shafts on the same circumference are rotatably connected to the planetary carrier, the planetary shafts are vertically arranged, and planetary gears are fixed to the top of the planetary shafts, the planetary gears are located between the outer wall of the central gear and the inner wall of the ring gear, and both the central gear and the ring gear are meshed with the planetary gears.

[0012] Preferably, the planetary shaft drives the first roller-shaped grinding wheel and the second roller-shaped grinding wheel to rotate through a transmission structure, and the transmission structure includes a first horizontally arranged internal spline tube and a second horizontally arranged internal spline tube, wherein:

[0013] The first internal spline tube is rotatably connected to the back plate, the first internal spline tube is slidably fitted with a first spline shaft, and the end of the first spline shaft is connected to the first short shaft through a first universal coupling;

[0014] The second inner spline tube is rotatably connected to the back plate, and the second inner spline tube is located below the first inner spline tube. A second spline shaft is slidably fitted in the second inner spline tube, and an end of the second spline shaft is connected to the second short shaft through a second universal coupling.

[0015] The first internal spline tube is fixedly connected with a first transmission gear, the second internal spline tube is fixedly connected with a second transmission gear, the first transmission gear and the second transmission gear are meshed with each other, an end gear is fixedly connected to the bottom end of the planetary shaft, and the end gear is meshed with the first transmission gear.

[0016] Preferably, a horizontal displacement structure is provided on the first inner spline tube to drive the first roller-shaped grinding wheel and the second roller-shaped grinding wheel to perform reciprocating linear motion in the horizontal direction. The horizontal displacement structure includes a reciprocating screw and a nut seat. The reciprocating screw is coaxially fixed to the outer wall of the first inner spline tube, the nut seat is fixed to the connecting plate, and the nut seat threadedly engages with the reciprocating screw.

[0017] Preferably, a rack is slidably connected to the connecting plate, the rack is horizontally arranged, and the rack is meshed with the first gear. When the mounting tube rotates, the rack is horizontally displaced by the centrifugal force.

[0018] Preferably, a limiting structure is provided on the square tube to control the displacement of the rack, the limiting structure includes a sliding rod, a through hole is opened on the square tube, the sliding rod is slidably fitted in the through hole, and a notch is opened on the sliding rod, one end of the sliding rod is fixedly connected to the rack, and the other end of the sliding rod is fixedly connected to a reset spring so that the sliding rod can be reset under the action of elastic force, and a wedge-shaped limiting block is fixedly connected to the upper end surface of the sliding tube, and the limiting block cooperates with the notch.

[0019] Preferably, a damping spring is vertically arranged in the sliding tube, the top end of the damping spring is fixedly connected to the planet carrier, and the bottom end of the damping spring is fixedly connected to the permanent magnet.

[0020] The present invention proposes an adjustable guitar processing drilling device, which has the beneficial effects that: the drilling method provided by the present invention can continuously complete the drilling, grinding and chamfering of a thin plate when drilling a hole in a guitar, and there is no need to stop the machine to replace tools during processing, thus saving the time required for replacing tools. In addition, the present invention can grind both ends of the hole at the same time by clamping the first roller-shaped grinding wheel and the second roller-shaped grinding wheel on the hole, and there is no need for workers to flip the thin plate back and forth during processing, thereby reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an adjustable guitar drilling device proposed by the present invention Figure 1 .

[0022] Figure 2 A schematic diagram of the structure of an adjustable guitar drilling device proposed by the present invention Figure 2 .

[0023] Figure 3 The present invention is a top view of an adjustable guitar drilling device.

[0024] Figure 4 The invention provides an adjustable guitar processing punching device Figure 3 AA section view.

[0025] Figure 5 The invention provides an adjustable guitar processing punching device Figure 4 Enlarged view of point B in the middle.

[0026] Figure 6 The present invention is a schematic structural diagram of a load-bearing plate of an adjustable guitar processing punching device.

[0027] Figure 7 The present invention is a schematic diagram of the structure inside a mounting tube of an adjustable guitar processing punching device.

[0028] Figure 8 This is a schematic diagram of the structure inside a square tube of an adjustable guitar processing punching device proposed by the present invention.

[0029] Fig. 9 The present invention is a schematic diagram of the structure inside a slide tube of an adjustable guitar processing punching device.

[0030] Fig.10 The invention provides an adjustable guitar processing punching device Fig. 9 A partial enlarged view.

[0031] Fig.11 The invention provides an adjustable guitar processing punching device Fig.10 Enlarged view of point C in the middle.

[0032] Fig.12 This is a schematic structural diagram of the connection between a grinding structure and a square tube of an adjustable guitar processing punching device proposed by the present invention.

[0033] Fig.13 The present invention is a schematic structural diagram of a grinding structure of an adjustable guitar drilling device.

[0034] Fig.14 The present invention is a schematic structural diagram of the cooperation between a nut seat and a reciprocating screw rod of an adjustable guitar processing punching device.

[0035] Fig.15 The working state of the adjustable guitar processing punching device proposed by the present invention is shown in FIG. Figure 1 .

[0036] Fig.16 The working state of the adjustable guitar processing punching device proposed by the present invention is shown in FIG. Figure 2 .

[0037] In the figure: 1, mounting tube; 101, notch; 2, bearing plate; 201, cylinder; 202, motor; 3, ring gear; 4, central gear; 5, planetary gear; 6, planetary shaft; 7, planetary carrier; 8, square tube; 801, through hole; 9, slide tube; 10, damping spring; 11, permanent magnet; 12, back plate; 13, slide groove; 14, connecting plate; 15, slide block; 16, first gear; 17, second gear; 18, first fixed plate; 19, first short shaft; 20, first roller grinding wheel; 2 1. First universal joint; 22. First spline shaft; 23. First internal spline tube; 24. Limit block; 25. Reciprocating screw; 26. Nut seat; 27. First transmission gear; 28. Second fixed plate; 29. ​​Second short shaft; 30. Second roller grinding wheel; 31. Second universal joint; 32. Second spline shaft; 33. Second internal spline tube; 34. Second transmission gear; 35. Face gear; 36. Rack; 37. Slide rod; 38. Return spring; 39. Joint; 40. Hole opener. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0039] Reference Figure 1-Figure 4 , an adjustable guitar processing punching device, comprising a cylindrical hole opener 40 and a vertically arranged mounting tube 1, the top of the mounting tube 1 is rotatably connected to a bearing plate 2, and the upper surface of the bearing plate 2 is connected to the output end of a cylinder 201, so that the bearing plate 2 and the mounting tube 1 can be raised and lowered;

[0040] like Figure 4 and Figure 6-Figure 7 A driving structure is provided on the load-bearing plate 2 to drive the mounting tube 1 to rotate, and the driving structure includes a motor 202, which is vertically fixed to the middle part of the load-bearing plate 2, and a central gear 4 is fixed to the output shaft of the motor 202, and a ring gear 3 is fixed inside the mounting tube 1, and the ring gear 3 is sleeved on the central gear 4, and the axis of the ring gear 3 coincides with the axis of the central gear 4, and a planet carrier 7 is horizontally fixed inside the mounting tube 1, and a plurality of planet shafts 6 on the same circumference are rotatably connected to the planet carrier 7, and the planet shafts 6 are vertically arranged, and a planet gear 5 is fixed to the top of the planet shaft 6, and the planet gear 5 is located between the outer wall of the central gear 4 and the inner wall of the ring gear 3, and both the central gear 4 and the ring gear 3 are meshed with the planet gear 5.

[0041] When the driving structure is working, the motor 202 drives the central gear 4 to rotate, and the rotation of the central gear 4 drives the planetary gear 5 to rotate. Since the planetary gear 5 is meshed with the ring gear 3 and the ring gear 3 is in a fixed state, the planetary gear 5 will also revolve around the central gear 4 when rotating, wherein:

[0042] For the rotation of the planetary gear 5: the rotation of the planetary gear 5 will drive the planetary shaft 6 to rotate;

[0043] Regarding the revolution of the planetary gear 5: the revolution of the planetary gear 5 will drive the planetary shaft 6 to revolve synchronously. Since the planetary shaft 6 is connected to the planetary frame 7, the planetary shaft 6 will drive the planetary frame 7 to rotate during its revolution. Since the planetary frame 7 is fixedly connected to the mounting tube 1, the mounting tube 1 will be driven to rotate when the planetary frame 7 rotates.

[0044] like Figure 4 and Figure 6-Figure 7 A square tube 8 is vertically fixed on the internal axis of the mounting tube 1, a square sliding tube 9 is slidably fitted inside the square tube 8, a thin plate-shaped permanent magnet 11 is horizontally fixed inside the sliding tube 9, and a joint 39 is fixed to the top of the hole opener 40, the joint 39 is slidably fitted with the sliding tube 9, and the joint 39 is magnetically adsorbed on the permanent magnet 11.

[0045] Since the outer diameter of the installation tube 1 is smaller than the outer diameter of the hole opener 40 , the hole made by the hole opener 40 can allow the installation tube 1 to pass through.

[0046] When the driving structure drives the mounting tube 1 to rotate, the mounting tube 1 will drive the square tube 8 to rotate synchronously, and the rotation of the square tube 8 will drive the sliding tube 9 to rotate. During the rotation process, the sliding tube 9 will drive the hole opener 40 to rotate through the joint 39, and the hole opener 40 can perform the hole opening work during the rotation process.

[0047] like Figure 4-Figure 5 As shown, a plurality of grinding structures are fixedly connected at equal intervals on the outer wall of the square tube 8, and the grinding structure includes a back plate 12, and slide grooves 13 are fixedly connected horizontally on both sides of the back plate 12, and a slider 15 is slidably connected in the slide groove 13, and a connecting plate 14 is vertically fixedly connected to the slider 15, and a first gear 16 and a second gear 17 are rotatably connected to the connecting plate 14, and the first gear 16 is located above the second gear 17, and the first gear 16 and the second gear 17 are meshed with each other.

[0048] During the rotation of the mounting tube 1 , the grinding structure is driven to rotate around the axis of the hole opener 40 , so that the grinding structure grinds the hole opened by the hole opener 40 .

[0049] like Figure 13-14As shown, a first fixing plate 18 is fixedly connected to the end surface of the first gear 16, a first short shaft 19 is rotatably connected to the first fixing plate 18, the axis of the first short shaft 19 intersects with the axis of the first gear 16, and a first roller-shaped grinding wheel 20 is fixedly connected to the first short shaft 19 coaxially;

[0050] When the first gear 16 rotates, the first fixed plate 18 will be driven to rotate synchronously. The rotation of the first fixed plate 18 will drive the first short shaft 19 to rotate around the axis of the first gear 16, and the first roller-shaped grinding wheel 20 on the first short shaft 19 will also rotate accordingly, thereby adjusting the angle between the first roller-shaped grinding wheel 20 and the horizontal plane.

[0051] like Figure 13-14 As shown, a second fixed plate 28 is fixedly connected to the end face of the second gear 17, a second short shaft 29 is rotatably connected to the second fixed plate 28, the axis of the second short shaft 29 intersects with the axis of the second gear 17, a second roller-shaped grinding wheel 30 is coaxially fixedly connected to the second short shaft 29, and a plurality of notches 101 are opened on the tube wall of the mounting tube 1, the notches 101 correspond one-to-one to the grinding structures to accommodate the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 to pass through.

[0052] Since the second gear 17 is meshed with the first gear 16, the second gear 17 will be driven to rotate during the rotation of the first gear 16. The rotation of the second gear 17 will drive the second fixed plate 28 to rotate synchronously. The rotation of the second fixed plate 28 will drive the second short shaft 29 to rotate around the axis of the second gear 17, and the second roller-shaped grinding wheel 30 on the second short shaft 29 will also rotate accordingly, thereby adjusting the angle between the second roller-shaped grinding wheel 30 and the horizontal plane.

[0053] Based on the above description, it can be known that when the first gear 16 drives the second gear 17 to rotate, the angle between the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 can be adjusted, so that the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 are clamped on the edge of the opening to grind and chamfer the edge of the opening.

[0054] like Figure 5 and Fig.14As shown, the planetary shaft 6 drives the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 to rotate through a transmission structure, and the transmission structure includes a horizontally arranged first inner spline tube 23 and a horizontally arranged second inner spline tube 33, the first inner spline tube 23 is rotatably connected to the back plate 12, and a first spline shaft 22 is slidably fitted in the first inner spline tube 23, and the end of the first spline shaft 22 is connected to the first short shaft 19 through a first universal coupling 21; the second inner spline tube 33 is rotatably connected to the back plate 12, and the second inner spline tube 33 is rotatably connected to the back plate 12, and the second inner spline tube 33 is rotatably connected to the back plate 12. 33 is located below the first inner spline tube 23, and a second spline shaft 32 is slidably fitted in the second inner spline tube 33. The end of the second spline shaft 32 is connected to the second short shaft 29 through a second universal joint 31; a first transmission gear 27 is fixedly connected to the first inner spline tube 23, and a second transmission gear 34 is fixedly connected to the second inner spline tube 33. The first transmission gear 27 and the second transmission gear 34 are meshed with each other. An end gear 35 is fixedly connected to the bottom end of the planetary shaft 6, and the end gear 35 is meshed with the first transmission gear 27.

[0055] The planetary shaft 6 will drive the end gear 35 to rotate during the self-rotation process, the rotation of the end gear 35 will drive the first transmission gear 27 to rotate, and the rotation of the first transmission gear 27 will drive the second transmission gear 34 to rotate, wherein:

[0056] The rotation of the first transmission gear 27 will drive the first inner spline tube 23 to rotate, and the rotation of the first inner spline tube 23 will drive the first spline shaft 22 to rotate. The rotation of the first spline shaft 22 will drive the first short shaft 19 to rotate through the first universal joint 21. The rotation of the first short shaft 19 will drive the first roller grinding wheel 20 to rotate. When the first roller grinding wheel 20 is against the edge of the opening, the rotation of the first roller grinding wheel 20 will grind the edge of the opening.

[0057] The rotation of the second transmission gear 34 will drive the second inner spline tube 33 to rotate, and the rotation of the second inner spline tube 33 will drive the second spline shaft 32 to rotate. The rotation of the second spline shaft 32 will drive the second short shaft 29 to rotate through the second universal joint 31. The rotation of the second short shaft 29 will drive the second roller grinding wheel 30 to rotate. When the second roller grinding wheel 30 is against the edge of the opening, the rotation of the second roller grinding wheel 30 will grind the edge of the opening.

[0058] like Figure 10-Figure 14 A horizontal displacement structure is provided on the first inner spline tube 23 to drive the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 to perform reciprocating linear motion in the horizontal direction. The horizontal displacement structure includes a reciprocating screw 25 and a nut seat 26. The reciprocating screw 25 is coaxially fixed to the outer wall of the first inner spline tube 23, the nut seat 26 is fixed to the connecting plate 14, and the nut seat 26 is threadedly engaged with the reciprocating screw 25.

[0059] When the first inner spline tube 23 rotates, the reciprocating screw 25 is driven to rotate. The rotation of the reciprocating screw 25 drives the nut seat 26 to make linear reciprocating motion in the horizontal direction. The linear reciprocating motion of the nut seat 26 in the horizontal direction drives the slider 15 to slide back and forth in the slide groove 13, and the connecting plate 14 on the slider 15 also moves synchronously. The reciprocating linear motion of the connecting plate 14 in the horizontal direction drives the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 to make reciprocating linear motion in the horizontal direction.

[0060] When the first grinding roller 20 and the second grinding roller 30 clamp the edge of the opening, the two grinding rollers perform linear reciprocating motion in the horizontal direction to grind the edge of the opening along the axis direction of the grinding rollers.

[0061] like Figure 8-Figure 10 As shown, a rack 36 is slidably connected to the connecting plate 14 , the rack 36 is horizontally arranged, and the rack 36 is meshed with the first gear 16 . When the mounting pipe 1 rotates, the rack 36 is horizontally displaced by the centrifugal force.

[0062] During the rotation of the mounting tube 1, the rack 36 will rotate synchronously therewith. During the rotation of the rack 36, the rack 36 will be subjected to the centrifugal force. Under the action of the centrifugal force, the rack 36 will make a centrifugal motion, so that the rack 36 will be displaced in the horizontal direction. During the displacement, the rack 36 will drive the first gear 16 to rotate. Based on the above description, it can be known that during the rotation of the first gear 16, the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 will be clamped on the edge of the opening.

[0063] like Fig.11 and Fig.15 As shown, a limiting structure is provided on the square tube 8 to control the displacement of the rack 36. The limiting structure includes a slide bar 37. A through hole 801 is provided on the square tube 8. The slide bar 37 is slidably fitted in the through hole 801, and a notch is provided on the slide bar 37. One end of the slide bar 37 is fixedly connected to the rack 36, and the other end of the slide bar 37 is fixedly connected to a reset spring 38 so that the slide bar 37 can be reset under the action of elastic force. A wedge-shaped limiting block 24 is fixedly connected to the upper end surface of the slide tube 9, and the limiting block 24 cooperates with the notch. A damping spring 10 is vertically arranged in the slide tube 9, and the top end of the damping spring 10 is fixedly connected to the planet carrier 7, and the bottom end of the damping spring 10 is fixedly connected to the permanent magnet 11.

[0064] When the hole opener 40 is drilling a hole in a thin plate, the cylinder 201 drives the hole opener 40 to move down and rest against the thin plate. The hole opener 40 moves up under the reverse action given by the thin plate. The upward movement of the hole opener 40 drives the slide tube 9 to move up in the square tube 8 and compresses the damping spring 10. The upward movement of the slide tube 9 will drive the limit block 24 up. The upward movement of the limit block 24 will enter the notch on the slide rod 37 to limit the slide rod 37. Since the slide rod 37 is fixedly connected to the rack 36, the rack 36 will not be able to move after the slide rod 37 is limited.

[0065] Working principle and workflow:

[0066] The steps of opening a hole in a thin plate by the device are as follows:

[0067] S1: Fig.15 As shown, the cylinder 201 is started, and the cylinder 201 drives the load-bearing plate 2 and the mounting tube 1 to move downward. When the hole opener 40 contacts the thin plate, the thin plate will give the hole opener 40 a vertical upward reverse force. Under the action of the reverse force, the hole opener 40 drives the slide tube 9 to move upward in the square tube 8 through the joint 39 until the limit block 24 is inserted into the insertion on the slide rod 37. The slide tube 9 will also compress the damping spring 10 during the upward movement.

[0068] S2: After the limit block 24 is inserted into the gap, the motor 202 is started. After the motor 202 is started, it will drive the central gear 4 to rotate. The rotation of the central gear 4 will drive the planetary gear 5 to rotate. Since the planetary gear 5 is meshed with the ring gear 3 and the ring gear 3 is in a fixed state, the planetary gear 5 will also revolve around the central gear 4 when rotating.

[0069] S3: During the revolution of the planetary gear 5, the planetary shaft 6 will be driven to revolve synchronously. Since the planetary shaft 6 is connected to the planetary frame 7, the planetary frame 7 will be driven to rotate during the revolution of the planetary shaft 6. Since the planetary frame 7 is fixedly connected to the mounting tube 1, the mounting tube 1 will be driven to rotate when the planetary frame 7 rotates. The rotation of the mounting tube 1 will cause the hole opener 40 to rotate on the thin plate. During the rotation, the hole opener 40 will open a hole in the thin plate.

[0070] S3: After the thin plate is punched, the hole opener 40 penetrates the hole under the driving force of the cylinder 201. Since the outer diameter of the mounting tube 1 is smaller than the outer diameter of the hole opener 40, the mounting tube 1 is also inserted into the hole under the driving force of the cylinder 201. When the thin plate is located on the symmetry line of the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30, the cylinder 201 is closed;

[0071] S4: When the installation tube 1 is inserted into the opening, the compressed damping spring 10 exerts a downward elastic force on the slide tube 9, causing the slide tube 9 to move downward in the square tube 8 to reset. The downward movement of the slide tube 9 drives the limit block 24 to move downward, so that the limit block 24 is gradually pulled out of the notch on the slide rod 37;

[0072] S5: Fig.16 As shown, when the limit block 24 is completely pulled out of the notch, the sliding tube 9 completes the resetting work. Since the motor 202 is still in working state, the mounting tube 1 and the square tube 8 are always in a rotating state, and the grinding structure on the square tube 8 is also rotating around the axis of the motor 202. During this process, the rack 36 will be affected by centrifugal force.

[0073] S6: Under the action of centrifugal force, the rack 36 performs centrifugal motion. During the centrifugal motion, the rack 36 drives the first gear 16 to rotate. Since the first gear 16 and the second gear 17 are meshed with each other, the rotation of the first gear 16 also drives the second gear 17 to rotate, wherein:

[0074] During the rotation of the first gear 16, the first fixed plate 18 is driven to rotate synchronously. The rotation of the first fixed plate 18 drives the first short shaft 19 to rotate around the axis of the first gear 16. The first roller-shaped grinding wheel 20 on the first short shaft 19 also rotates accordingly, so that the first roller-shaped grinding wheel 20 extends out of the notch 101, thereby adjusting the angle between the first roller-shaped grinding wheel 20 and the horizontal plane where the thin plate is located, so that the first roller-shaped grinding wheel 20 is pressed on the edge of the opening from above;

[0075] During the rotation of the second gear 17, the second fixed plate 28 is driven to rotate synchronously. The rotation of the second fixed plate 28 drives the second short shaft 29 to rotate around the axis of the second gear 17, and the second roller-shaped grinding wheel 30 on the second short shaft 29 also rotates accordingly, so that the second roller-shaped grinding wheel 30 extends out of the notch 101, thereby adjusting the angle between the second roller-shaped grinding wheel 30 and the horizontal plane where the thin plate is located, so that the second roller-shaped grinding wheel 30 is pressed on the edge of the opening from below;

[0076] When the angles of the first grinding wheel 20 and the second grinding wheel 30 are adjusted, the two grinding wheels will be clamped on the edge of the opening. At this time, during the rotation of the mounting tube 1, the first grinding wheel 20 and the second grinding wheel 30 will make a circular motion around the opening, thereby grinding the edge of the opening.

[0077] S7: Based on the above S6, during the grinding process in which two roller-shaped grinding wheels perform circular motion around the opening:

[0078] The rotation of the planetary gear 5 drives the planetary shaft 6 to rotate, and the rotation of the planetary shaft 6 drives the end gear 35 to rotate. The rotation of the end gear 35 drives the first transmission gear 27 to rotate. Since the first transmission gear 27 and the second transmission gear 34 are meshed with each other, the second transmission gear 34 will be driven to rotate during the rotation of the first transmission gear 27, wherein:

[0079] The rotation of the first transmission gear 27 will drive the first inner spline tube 23 to rotate, and the rotation of the first inner spline tube 23 will drive the first spline shaft 22 to rotate. The rotation of the first spline shaft 22 will drive the first short shaft 19 to rotate through the first universal joint 21. The rotation of the first short shaft 19 will drive the first roller grinding wheel 20 to rotate. The rotation of the first roller grinding wheel 20 will grind the edge of the opening, thereby improving the quality of the grinding process of the opening edge by the first roller grinding wheel 20.

[0080] The rotation of the second transmission gear 34 will drive the second inner spline tube 33 to rotate, and the rotation of the second inner spline tube 33 will drive the second spline shaft 32 to rotate. The rotation of the second spline shaft 32 will drive the second short shaft 29 to rotate through the second universal joint 31. The rotation of the second short shaft 29 will drive the second roller grinding wheel 30 to rotate. The rotation of the second roller grinding wheel 30 will grind the edge of the opening, thereby improving the quality of the grinding process of the opening edge by the second roller grinding wheel 30.

[0081] S8: During the rotation of the first inner spline tube 23, the reciprocating screw 25 is driven to rotate, and the rotation of the reciprocating screw 25 drives the nut seat 26 to perform linear reciprocating motion in the horizontal direction. The linear reciprocating motion of the nut seat 26 in the horizontal direction drives the slider 15 to slide back and forth in the slide groove 13, and the connecting plate 14 on the slider 15 also moves synchronously. The reciprocating linear motion of the connecting plate 14 in the horizontal direction drives the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 to perform reciprocating linear motion in the horizontal direction;

[0082] During the reciprocating linear movement, the first grinding wheel 20 and the second grinding wheel 30 always abut against the edge of the opening for grinding, so that the contact portion between the opening and the two grinding wheels performs an axial scanning motion on the surface of the grinding wheel to prevent local rapid wear of the grinding wheel.

[0083] S9: After the hole opening and grinding process is completed, the motor 202 is turned off. After the motor 202 is turned off, the device stops working and the rack 36 is no longer affected by the centrifugal force. At this time, under the elastic force of the reset spring 38, the reset spring 38 drives the rack 36 to reset through the slide rod 37. During the reset process of the rack 36, the first gear 16 and the second gear 17 are driven to reset, so that the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 are retracted into the notch 101.

[0084] S10: Start the cylinder 201 again, and the cylinder 201 drives the load-bearing plate 2 to move upward until the hole opener 40 is pulled out of the hole, and then close the cylinder 201, thus completing the hole opening work on the thin plate.

[0085] Compared with the prior art, the drilling method provided by the present invention can continuously complete the drilling, grinding and chamfering of the thin plate when drilling a hole in a guitar. There is no need to stop the machine to replace tools during processing, which saves the time required for replacing tools. In addition, the present invention can grind both ends of the hole at the same time by clamping the first roller-shaped grinding wheel 20 and the second roller-shaped grinding wheel 30 on the hole. During processing, there is no need for workers to flip the thin plate back and forth, thereby reducing the labor intensity of workers.

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable guitar drilling device, characterized in that: It comprises a cylindrical hole opener (40) and a vertically arranged mounting tube (1), the top of the mounting tube (1) is rotatably connected to a bearing plate (2), and the upper surface of the bearing plate (2) is connected to the output end of a cylinder (201), so that the bearing plate (2) and the mounting tube (1) can be raised and lowered; A driving structure is provided on the load-bearing plate (2) to drive the mounting tube (1) to rotate. A square tube (8) is vertically fixedly connected to the inner axis of the mounting tube (1). A square sliding tube (9) is slidably matched in the square tube (8). A thin plate-shaped permanent magnet (11) is horizontally fixedly connected in the sliding tube (9). A joint (39) is fixedly connected to the top of the hole opener (40). The joint (39) is slidably matched with the sliding tube (9), and the joint (39) is magnetically adsorbed on the permanent magnet (11). A plurality of grinding structures are fixedly connected to the outer wall of the square tube (8) at equal intervals, and the grinding structures include a back plate (12), and slide grooves (13) are fixedly connected to both sides of the back plate (12) horizontally, and a slider (15) is slidably connected in the slide groove (13), and a connecting plate (14) is fixedly connected to the slider (15) vertically, and a first gear (16) and a second gear (17) are rotatably connected to the connecting plate (14), and the first gear (16) is located above the second gear (17), and the first gear (16) and the second gear (17) are meshed with each other, wherein: A first fixing plate (18) is fixedly connected to the end surface of the first gear (16), a first short shaft (19) is rotatably connected to the first fixing plate (18), an axis of the first short shaft (19) intersects with the axis of the first gear (16), and a first roller-shaped grinding wheel (20) is fixedly connected to the first short shaft (19) coaxially; A second fixing plate (28) is fixedly connected to the end surface of the second gear (17), a second short shaft (29) is rotatably connected to the second fixing plate (28), an axis of the second short shaft (29) intersects with the axis of the second gear (17), and a second roller-shaped grinding wheel (30) is coaxially fixedly connected to the second short shaft (29); The driving structure comprises a motor (202), the motor (202) is vertically fixed to the middle of the bearing plate (2), a central gear (4) is fixed to the output shaft of the motor (202), a ring gear (3) is fixed inside the mounting tube (1), the ring gear (3) is sleeved on the central gear (4), and the axis of the ring gear (3) coincides with the axis of the central gear (4), a planet carrier (7) is horizontally fixed inside the mounting tube (1), a plurality of planet shafts (6) on the same circumference are rotatably connected to the planet carrier (7), the planet shafts (6) are vertically arranged, a planet gear (5) is fixed to the top of the planet shaft (6), the planet gear (5) is located between the outer wall of the central gear (4) and the inner wall of the ring gear (3), and both the central gear (4) and the ring gear (3) are meshed with the planet gear (5).

2. The adjustable guitar drilling device according to claim 1, characterized in that: The outer diameter length of the mounting tube (1) is smaller than the outer diameter length of the hole opener (40), and a plurality of slots (101) are opened on the tube wall of the mounting tube (1), and the slots (101) correspond to the grinding structures one by one to accommodate the first roller-shaped grinding wheel (20) and the second roller-shaped grinding wheel (30) to pass through.

3. The adjustable guitar drilling device according to claim 1, characterized in that: The planetary shaft (6) drives the first roller-shaped grinding wheel (20) and the second roller-shaped grinding wheel (30) to rotate through a transmission structure, wherein the transmission structure comprises a first internal spline tube (23) and a second internal spline tube (33) arranged horizontally, wherein: The first inner spline tube (23) is rotatably connected to the back plate (12), a first spline shaft (22) is slidably fitted inside the first inner spline tube (23), and an end of the first spline shaft (22) is connected to the first short shaft (19) via a first universal joint (21); The second inner spline tube (33) is rotatably connected to the back plate (12), and the second inner spline tube (33) is located below the first inner spline tube (23). A second spline shaft (32) is slidably fitted in the second inner spline tube (33), and an end of the second spline shaft (32) is connected to the second short shaft (29) via a second universal joint (31); A first transmission gear (27) is fixedly connected to the first internal spline tube (23), a second transmission gear (34) is fixedly connected to the second internal spline tube (33), the first transmission gear (27) and the second transmission gear (34) are meshed with each other, an end gear (35) is fixedly connected to the bottom end of the planetary shaft (6), and the end gear (35) is meshed with the first transmission gear (27).

4. The adjustable guitar drilling device according to claim 3, characterized in that: A horizontal displacement structure is provided on the first inner spline tube (23) to drive the first roller-shaped grinding wheel (20) and the second roller-shaped grinding wheel (30) to perform reciprocating linear motion in the horizontal direction. The horizontal displacement structure comprises a reciprocating screw (25) and a nut seat (26). The reciprocating screw (25) is coaxially fixed to the outer wall of the first inner spline tube (23), the nut seat (26) is fixed to the connecting plate (14), and the nut seat (26) is threadedly engaged with the reciprocating screw (25).

5. The adjustable guitar drilling device according to any one of claims 1 to 4, characterized in that: A rack (36) is slidably connected to the connecting plate (14), the rack (36) is horizontally arranged, and the rack (36) is meshed with the first gear (16). When the mounting tube (1) rotates, the rack (36) is horizontally displaced by the centrifugal force.

6. The adjustable guitar drilling device according to claim 5, characterized in that: A limiting structure is provided on the square tube (8) to control the displacement of the rack (36), the limiting structure comprising a slide bar (37), a through hole (801) is provided on the square tube (8), the slide bar (37) is slidably fitted in the through hole (801), and a notch is provided on the slide bar (37), one end of the slide bar (37) is fixedly connected to the rack (36), and the other end of the slide bar (37) is fixedly connected to a reset spring (38) so that the slide bar (37) is reset under the action of elastic force, and a wedge-shaped limiting block (24) is fixedly connected to the upper end surface of the slide tube (9), and the limiting block (24) is matched with the notch.

7. The drilling device for adjustable guitar processing according to claim 6, characterized in that: A damping spring (10) is vertically arranged in the sliding tube (9), the top end of the damping spring (10) is fixedly connected to the planet carrier (7), and the bottom end of the damping spring (10) is fixedly connected to the permanent magnet (11).

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