A drilling device for gear machining

Abstract

This invention belongs to the field of drilling equipment technology, specifically a drilling device for gear processing, including a worktable, a rotating component, a rotating disk, a positioning and clamping component, a drilling component, and a combined drill bit. This invention utilizes a combined drill bit in conjunction with a segmented drilling control process. On one hand, segmented drilling, compared to single-pass drilling, not only reduces the power input for large cutting forces but also mitigates the vibrations caused by large cutting forces that can easily lead to positioning and clamping failure. Therefore, segmented drilling improves the processing quality of gear counterweight holes. On the other hand, since each counterweight hole on the gear can be processed with less waiting time after a single clamping, it reduces the ineffective time spent on secondary clamping and intermediate transfer compared to drilling and reaming in separate processes, thereby improving gear processing efficiency. Furthermore, the high degree of automation allows one person to oversee multiple processing machines simultaneously, saving labor costs and improving processing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of drilling equipment technology, specifically a drilling device for gear processing. Background Technology

[0002] To reduce the weight of the gear and make it easier to grip and use it during operation, multiple weight-reducing holes are machined on the gear. To ensure that the gear can operate normally without shifting during operation, the weight-reducing holes need to be evenly distributed on the end face of the gear, and the weight-reducing holes need to have a high degree of coaxiality with the gear.

[0003] The common method for machining weight-reducing holes on gears is drilling using a drilling machine. A drill bit is fixedly mounted on the drill spindle, and the motor spindle drives the drill bit to rotate at high speed via a pulley, thus drilling the weight-reducing hole into the gear. Chinese patent CN204584341U discloses a drilling device for machining weight-reducing holes on the end face of a starting clutch gear. It includes a horizontal worktable and a spindle box and a stepper motor fixedly mounted at opposite ends of the worktable. A tapered drill bit is horizontally mounted at the center of the spindle chuck on the spindle box. Two parallel guide rails are mounted on the worktable between the spindle box and the stepper motor. A connecting plate is fixedly mounted on the motor shaft of the stepper motor, and an indexing head is fixedly mounted on the connecting plate. The indexing head chuck of the indexing head has a clamping part. The connecting plate is located on the two guide rails and can reciprocate. The tapered drill bit and the indexing head chuck are opposite each other. The centerline of the tapered drill bit is parallel to the centerline of the indexing head chuck.

[0004] This equipment uses a tapered drill bit to drill the counterweight hole of the gear in a single pass. This single-pass drilling not only requires a large power input to withstand the cutting force, but the vibration generated by the large cutting force can also easily lead to positioning and clamping failure, resulting in reduced machining quality. Furthermore, using a tapered drill bit requires specialized drilling equipment, and the resulting counterweight hole is a tapered hole. This method is only suitable for gears requiring tapered counterweight holes. Therefore, this machining method has significant limitations and is difficult to promote and apply widely. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a drilling device for gear machining. This invention primarily addresses the problem that existing tapered drills for single-pass drilling of counterweight holes in gears require a large power input to achieve the desired cutting force, and the vibration generated by this force can easily lead to clamping failure, resulting in reduced machining quality; furthermore, this machining method is quite restrictive.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a drilling device for gear processing, including a worktable, a rotating component, a rotating disk, a positioning and clamping component, a drilling component, and a combined drill bit; the rotating disk is mounted on the worktable via the rotating component; the rotating component is used to drive the rotating disk to rotate; the positioning and clamping component is arranged at the center position on the rotating disk; the positioning and clamping component is used to position and clamp the gear part to be processed; the combined drill bit is arranged above the positioning and clamping component and mounted on the drilling component; the combined drill bit includes a drilling cutting section and a reaming cutting section; the drilling component is fixedly connected to the worktable.

[0007] During operation, the gear to be machined, with its center hole and end face already machined, is mounted on the positioning and clamping component. The gear is positioned and clamped using its center hole and end face. After completion, the controller uses an electrical signal to control the drilling component, driving the combined drill bit to rotate and continuously feed downwards. When the smaller diameter cutting section at the lower end of the combined drill bit completely penetrates the gear (this signal can be obtained via a proximity switch or directly from the number of pulses received by the feed servo motor), the controller controls the drilling component to pull the combined drill bit out of the counterweight hole machined on the gear. Subsequently, the controller controls the drilling component to reduce the rotation speed of the combined drill bit to a set value. The controller then controls the drilling component to drive the combined drill bit into the counterweight hole with the pre-machined bottom hole. When the reaming cutting section of the combined drill bit completely penetrates the gear, the controller controls the drilling component to pull the combined drill bit out of the counterweight hole machined to the correct size on the gear. After the combined drill bit is completely pulled out, the controller uses an electrical signal to control the rotating component, driving the rotating disk to rotate, which in turn drives the pre-machined counterweight hole on the gear via the positioning and clamping component. After machining one counterweight hole, the gear rotates to a set angle. Then, the controller controls the drilling component to drive the combined drill bit to machine the next counterweight hole. The controller achieves machining of all counterweight holes on the gear by cyclically alternating between the drilling and rotating components. This solution uses a combined drill bit in conjunction with a segmented drilling control process. On one hand, segmented drilling, compared to single-pass drilling, not only reduces the power input for large cutting forces, but also mitigates the vibrations caused by large cutting forces that can easily lead to positioning and clamping failure, resulting in reduced machining quality. Therefore, segmented drilling improves the machining quality of the gear counterweight holes, thereby improving gear performance. On the other hand, since each counterweight hole on the gear can be machined with less waiting time after a single clamping, it reduces the ineffective time of secondary clamping and intermediate transfer compared to drilling and reaming in separate processes, thus improving gear machining efficiency. Furthermore, the high degree of automation allows one person to oversee multiple machining machines simultaneously, saving labor costs and increasing machining efficiency.

[0008] Preferably, the positioning and clamping component includes a support column, a wedge, a push rod, a double-ended connecting rod, a first telescopic cylinder, and a mounting flange; the lower end of the support column is fixedly connected above the through hole at the center of the rotating disk; the upper end of the support column is provided with a stepped surface after the diameter is reduced, and radial grooves are evenly spaced along the circumference on the cylindrical surface after the diameter is reduced; the wedge is slidably connected in the radial grooves; the center of the support column is a hollow structure, and the push rod is slidably connected in the hollow structure; the inclined surface of the upper end of the push rod is in contact with the inclined surface of the wedge; the lower end of the push rod is fixedly connected to the cylinder rod of the first telescopic cylinder through the double-ended connecting rod; the first telescopic cylinder is fixedly connected to the lower end face of the support column through the mounting flange.

[0009] During operation, the center hole of the gear to be processed is fitted onto the contraction diameter at the upper end of the support column, ensuring the end face of the gear aligns with the contracted diameter end face. The controller, via an electrical signal, controls the control valve of the first telescopic cylinder to extend it. This extension, in turn, sequentially pushes the double-headed connecting rod, the push rod, and the wedge, causing the wedge to emerge from the radial groove and clamp the center hole of the gear. This achieves rapid gear positioning and clamping, thereby improving gear processing efficiency. After all counterweight holes on the gear are processed, the controller retracts the first telescopic cylinder, disengaging the inclined surface at the upper end of the push rod from pressing against the inclined surface of the wedge. This removes the clamping force from the wedge, facilitating the rapid removal of the gear from the support column and further improving gear processing efficiency.

[0010] Preferably, fixed guide sleeves are evenly spaced along the circumferential direction below the stepped surface of the support column; the fixed guide sleeves are fixedly connected to the support column by a mounting plate; the inner diameter of the fixed guide sleeves is the same as the diameter of the drilling cutting section of the combined drill bit.

[0011] By uniformly spaced fixed guide sleeves along the circumference below the stepped surface of the support column, when the controller controls the drilling component to drive the combined drill bit into the counterweight hole that has already been machined, the drilling cutting section at the lower end of the combined drill bit passes through the gear and enters the fixed guide sleeve below. Then, when the upper reaming cutting section drills the bottom hole, the drilling cutting section extending from the fixed guide sleeve below can better stabilize the combined drill bit, thereby improving the stability of the combined drill bit during the cutting process, and thus improving the machining accuracy of the reaming cutting section, which in turn improves the machining accuracy of the counterweight hole on the gear.

[0012] Preferably, an air blowing pipe is provided below the fixed guide sleeve; the air outlet of the air blowing pipe is vertically aligned with the fixed guide sleeve below the combined drill bit; the air blowing pipe is connected to an external positive pressure air source; and the air blowing pipe is fixedly connected to the worktable via a support pipe.

[0013] By installing an air blowing pipe below the fixed guide sleeve directly opposite the combined drill bit, high-pressure air is introduced into the air blowing pipe through an external air compressor and other high-pressure air sources when the combined drill bit is machining the counterweight hole of the gear in the reaming cutting section. The high-pressure air is then sprayed from the air blowing pipe into the fixed guide sleeve. On the one hand, the high-pressure airflow blowing upward from below the fixed guide sleeve can prevent the cuttings from the combined drill bit above from falling into the fixed guide sleeve, which would cause the lower drilling cutting section of the combined drill bit to get stuck in the fixed guide sleeve or scratch the inner hole of the fixed guide sleeve, thus reducing the limiting accuracy of the fixed guide sleeve. On the other hand, the high-pressure air blown into the fixed guide sleeve has a cooling effect on the combined drill bit, thereby improving the cutting performance of the combined drill bit.

[0014] Preferably, the space between the fixed guide sleeve and the gear to be processed, as well as the space around it, is surrounded by a collection box; the collection box is a rotating cavity; the lower edge of the collection box is in contact with the side of the mounting plate on which the fixed guide sleeve is installed; the upper edge of the collection box is close to the gear to be processed and has a gap.

[0015] By setting up a collection box around the fixed guide sleeve and the gear to be processed, the chips generated by the reaming cutting section of the combined drill bit fall from the counterweight hole into the space between the fixed guide sleeve and the gear to be processed. Since there is a blower pipe below the fixed guide sleeve that continuously blows high-pressure air upwards, the chips are easily blown up, causing the processing environment to become dirty and messy, and posing a risk of injury to workers loading and unloading. The collection box can prevent the chips from flying around, thereby improving the cleanliness of the processing environment and reducing the danger to workers.

[0016] Preferably, the bottom surface of the collection box is placed on the worktable; a limiting block is provided on the outer cylindrical surface of the collection box near the lower edge; a limiting pin is provided on the worktable and inserted into the upper limiting hole of the limiting block.

[0017] The collection box is positioned and limited by being inserted into a limit pin, thus ensuring its accurate placement and preventing displacement caused by vibrations during drilling. This also avoids collisions with the rotating disc, mounting plate, or gears being processed, thereby improving the safety of equipment operation. The limit pin connection also makes it easy to remove the collection box from the worktable, facilitating the flushing of chips inside and making it easier for workers to clean the equipment.

[0018] Preferably, the rotating component includes a rotating support, a drive gear, and a servo motor with a brake; the rotating disk is rotatably connected to the worktable via the rotating support; a gear ring fixedly connected to the rotating disk meshes with the drive gear; the drive gear is fixedly connected to the rotating shaft of the servo motor; and the servo motor is fixedly connected to the worktable.

[0019] The controller controls a servo motor with electromagnetic brake function via electrical signals. This allows the controller to drive the rotating disk, which in turn drives the gear on the positioning and clamping component to rotate a certain angle and then stop accurately. This results in higher precision in the machining of the counterweight hole and improves the machining quality of the gear.

[0020] Preferably, the drilling component includes a vertical support frame, a servo feed unit, a mounting block, an electric spindle, a guide rod, a fixed plate, a connecting plate, a movable guide sleeve, and a second telescopic cylinder; the lower end of the vertical support frame is fixedly connected to the worktable; the servo feed unit is vertically arranged on the vertical support frame near the rotating disk; the servo feed unit is provided with a mounting block for mounting the electric spindle; the electric spindle is vertically downward, and the combined drill bit is fixedly connected to the lower end of the electric spindle's rotating shaft; the movable guide sleeve is sleeved on the reaming cutting section of the combined drill bit; the movable guide sleeve is fixedly connected to the fixed plate; the fixed plate is fixedly connected to the lower end of the guide rod; the guide rod is slidably connected to the mounting block; the upper end of the guide rod is fixedly connected to the connecting plate; the connecting plate is fixedly connected to the rotating shaft of the second telescopic cylinder; the second telescopic cylinder is fixedly connected to the side wall of the mounting block via a cylinder support plate.

[0021] The controller uses electrical signals to control the servo feed unit to drive the mounting block downwards, which in turn drives the rotating combination drill bit on the electric spindle to drill the counterweight hole of the gear. When the drilling section of the combination drill bit is drilling the bottom hole of the counterweight hole, the controller uses electrical signals to control the control valve of the second telescopic cylinder, which in turn drives the connecting plate, guide rod, mounting plate, and movable guide sleeve downwards. This positions the movable guide sleeve at the bottom of the reaming section, thus improving the guiding and limiting effect by being closer to the drilling section, thereby improving the stability of the drilling section and the machining quality of the gear counterweight hole. Before the reaming section of the combination drill bit can further process the bottom hole of the counterweight hole, the controller controls the second telescopic cylinder to extend, which drives the movable guide sleeve to move to the top of the reaming section. This prevents the movable guide sleeve and the fixed plate from colliding with the gear during drilling, thus ensuring safety.

[0022] Preferably, a rotating ring is provided at the lower end of the movable guide sleeve; the rotating ring is rotatably connected to the inner ring of the fixed disk via a bearing; the fixed disk is fixedly connected to the fixed plate; and two sets of bristles are symmetrically arranged radially on the inner ring of the rotating ring.

[0023] By setting a freely rotatable rotating ring below the movable guide sleeve, and setting two sets of bristles on the inner ring of the rotating ring, the two sets of bristles extend into the two cutting grooves on the reaming cutting section of the combined drill bit. Then, as the movable guide sleeve is driven by the second telescopic cylinder to move to the bottom of the reaming cutting section, the rotating ring can rotate freely, and the two sets of bristles can move along the cutting grooves, thereby removing the cutting residue adhering to the cutting grooves, improving the cleanliness of the combined drill bit, and thus improving the drilling quality.

[0024] Preferably, the inner ring of the rotating ring is covered with a layer of wear-resistant rubber.

[0025] By covering the inner ring of the rotating ring with a layer of wear-resistant rubber, the wear-resistant rubber layer fits more tightly with the outer circle of the reaming cutting section of the combined drill bit during rotation, and will not get stuck. This allows the wear-resistant rubber layer to scrape off the chips adhering to the outer circle of the reaming cutting section, thereby achieving the removal of chips adhering to the cutting surface, improving the cleanliness of the combined drill bit, and thus improving the drilling quality.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. This invention utilizes a combination of drill bits and a segmented drilling control process. On one hand, segmented drilling, compared to single-pass drilling, not only reduces the power input for large cutting forces, but also mitigates the vibrations generated by large cutting forces that can easily lead to positioning and clamping failure, resulting in reduced machining quality. Therefore, segmented drilling can improve the machining quality of gear counterweight holes, thereby improving gear performance. On the other hand, since each counterweight hole on the gear can be machined with less waiting time after a single clamping, it reduces the ineffective time of secondary clamping and intermediate transfer compared to drilling and reaming in separate processes, thus improving gear machining efficiency. Furthermore, the high degree of automation allows one person to oversee multiple machining equipment simultaneously, saving labor costs and improving machining efficiency.

[0028] 2. This invention provides fixed guide sleeves evenly spaced along the circumference below the stepped surface of the support column. When the controller controls the drilling component to drive the combined drill bit into the counterweight hole that has already been machined, the drilling cutting section at the lower end of the combined drill bit passes through the gear and enters the fixed guide sleeve below. Then, when the upper reaming cutting section drills the bottom hole, the drilling cutting section extending from the fixed guide sleeve below can better stabilize the combined drill bit, thereby improving the stability of the combined drill bit during the cutting process and improving the machining accuracy of the reaming cutting section, which in turn improves the machining accuracy of the counterweight hole on the gear.

[0029] 3. This invention, by setting an air blowing pipe below the fixed guide sleeve directly opposite the combined drill bit, allows high-pressure air to be introduced into the air blowing pipe via an external air compressor and other high-pressure air sources when the combined drill bit is machining the counterweight hole of the gear during the reaming cutting section. The high-pressure air is then sprayed from the air blowing pipe into the fixed guide sleeve. On one hand, the high-pressure airflow blowing upwards from below the fixed guide sleeve prevents the cutting material from the combined drill bit from falling into the fixed guide sleeve, thus preventing the lower section of the combined drill bit from jamming or scratching the inner hole of the fixed guide sleeve, thereby reducing the limiting accuracy of the fixed guide sleeve. On the other hand, the high-pressure air blown into the fixed guide sleeve has a cooling effect on the combined drill bit, thereby improving its cutting performance.

[0030] 4. In this invention, the controller uses electrical signals to control the servo feed unit to drive the mounting block downwards, thereby driving the combined drill bit rotating on the electric spindle to drill the counterweight hole of the gear. When the drilling cutting section of the combined drill bit is drilling the bottom hole of the counterweight hole, the controller uses electrical signals to control the control valve of the second telescopic cylinder, thereby causing the second telescopic cylinder to drive the connecting plate, guide rod, mounting plate, and movable guide sleeve downwards. This places the movable guide sleeve at the bottom of the reaming cutting section, thus improving the guiding and limiting effect by being closer to the drilling cutting section, thereby improving the stability of the drilling cutting section and improving the processing quality of the gear counterweight hole. Before the reaming cutting section of the combined drill bit processes the bottom hole of the counterweight hole, the controller controls the second telescopic cylinder to extend, thereby driving the movable guide sleeve to move to the top of the reaming cutting section, thereby preventing the movable guide sleeve and the fixed plate from colliding with the gear during drilling, thus ensuring safety. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the overall structure of the drilling device of the present invention;

[0033] Figure 2 This is a partial structural schematic diagram of the drilling device of the present invention;

[0034] Figure 3 This is a schematic diagram of the rotating component in this invention from a first-view perspective;

[0035] Figure 4 This is a schematic diagram of the rotating component in this invention from a second perspective;

[0036] Figure 5 This is a schematic diagram of the internal structure of the drilling device of the present invention;

[0037] Figure 6This is a schematic diagram of the positioning and clamping component in this invention;

[0038] Figure 7 This is a schematic diagram of the internal structure of the positioning and clamping component in this invention;

[0039] Figure 8 This is a schematic diagram of the connection between the wedge and the push rod in this invention;

[0040] Figure 9 This is a schematic diagram of the drilling component in this invention from a first-view perspective;

[0041] Figure 10 This is a schematic diagram of the drilling component in this invention from a second perspective;

[0042] Figure 11 This is a schematic diagram showing the connection between the rotating ring and the fixed disk in this invention;

[0043] Figure 12 This is a schematic diagram of the internal connection between the rotating ring and the fixed disk in this invention;

[0044] In the diagram: 1. Workbench; 2. Rotating component; 21. Rotating support; 22. Drive gear; 23. Servo motor; 3. Rotating disk; 4. Positioning and clamping component; 41. Support column; 42. Wedge; 43. Top rod; 44. Double-headed connecting rod; 45. First telescopic cylinder; 46. Mounting flange; 47. Fixed guide sleeve; 48. Air pipe; 49. Collection box; 491. Limiting block; 492. Limiting pin; 5. Drilling component; 51. Vertical support frame; 52. Servo feed unit; 53. Mounting block; 54. Electric spindle; 55. Guide rod; 56. Fixed plate; 57. Connecting plate; 58. Movable guide sleeve; 59. Second telescopic cylinder; 6. Combined drill bit; 61. Drilling cutting section; 62. Hole reaming cutting section; 71. Rotating ring; 72. Bearing; 73. Fixed disk; 74. Brush bristles; 75. Wear-resistant rubber layer. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0046] like Figures 1 to 2As shown, a drilling device for gear machining includes a worktable 1, a rotating component 2, a rotating disk 3, a positioning and clamping component 4, a drilling component 5, and a combined drill bit 6. The rotating disk 3 is mounted on the worktable 1 via the rotating component 2. The rotating component 2 drives the rotating disk 3 to rotate. The positioning and clamping component 4 is positioned at the center of the rotating disk 3. The positioning and clamping component 4 is used to position and clamp the gear part to be machined. The combined drill bit 6 is mounted on the drilling component 5 above the positioning and clamping component 4. The combined drill bit 6 includes a drilling cutting section 61 and a reaming cutting section 62. The drilling component 5 is fixedly connected to the worktable 1.

[0047] During operation, the gear to be machined, with its center hole and end face already machined, is mounted on the positioning and clamping component 4. The gear is positioned and clamped using its center hole and end face. After completion, the controller uses an electrical signal to control the drilling component 5 to drive the combined drill bit 6 to rotate and continuously feed downwards. When the smaller diameter drilling section 61 at the lower end of the combined drill bit 6 completely penetrates the gear, this signal can be obtained through a proximity switch or directly through the number of pulses received by the feed servo motor 23. The controller then controls the drilling component 5 to move the combined drill bit 6 from the gear... The drill bit 6 is pulled out of the pre-machined counterweight hole. Then, the controller controls the drilling component 5 to reduce the rotation speed of the combined drill bit 6 to a set value. The controller again controls the drilling component 5 to drive the combined drill bit 6 into the pre-machined counterweight hole. When the reaming cutting section 62 of the combined drill bit 6 completely penetrates the gear, the controller controls the drilling component 5 to pull the combined drill bit 6 out of the pre-machined counterweight hole on the gear. After the combined drill bit 6 is completely pulled out, the controller controls the rotating component 2 to drive the rotating disk 3 to rotate via an electrical signal, which in turn drives the positioning and clamping part... Part 4 drives the gear, which already has one counterweight hole machined, to rotate by a set angle. Then, the controller controls the drilling component 5 to drive the combined drill bit 6 to machine the next counterweight hole. The controller achieves machining of all counterweight holes on the gear by cyclically alternating between the drilling component 5 and the rotating component 2. This scheme, through the combined drill bit 6 and the segmented drilling control process, not only reduces the power input for large cutting forces compared to single-pass drilling, but also avoids the vibration caused by large cutting forces that can easily lead to positioning and clamping failure, thus reducing machining quality. Therefore, segmented drilling can improve the machining quality of the gear counterweight holes, thereby improving gear performance. Furthermore, since each counterweight hole on the gear can be machined with less waiting time after a single clamping, it reduces the invalid time of secondary clamping and intermediate transfer compared to drilling and reaming in separate processes, thus improving gear machining efficiency. Simultaneously, the high degree of automation allows one person to oversee multiple processing machines simultaneously, saving labor costs and improving processing efficiency.

[0048] like Figures 5 to 8As shown, the positioning and clamping component 4 includes a support column 41, a wedge block 42, a push rod 43, a double-headed connecting rod 44, a first telescopic cylinder 45, and a mounting flange 46. The lower end of the support column 41 is fixedly connected above the through hole in the center of the rotating disk 3. The upper end of the support column 41 is provided with a stepped surface after the diameter is reduced, and radial grooves are evenly spaced along the circumference on the cylindrical surface after the diameter is reduced. The wedge block 42 is slidably connected in the radial grooves. The center of the support column 41 is a hollow structure, and the push rod 43 is slidably connected in the hollow structure. The inclined surface of the upper end of the push rod 43 is in contact with the inclined surface of the wedge block 42. The lower end of the push rod 43 is fixedly connected to the cylinder rod of the first telescopic cylinder 45 through the double-headed connecting rod 44. The first telescopic cylinder 45 is fixedly connected to the lower end surface of the support column 41 through the mounting flange 46.

[0049] During operation, the center hole of the gear to be processed is fitted onto the contraction diameter of the upper end of the support column 41, ensuring that the end face of the gear is in contact with the contracted end face. The controller, via an electrical signal, controls the control valve of the first telescopic cylinder 45 to extend the first contraction cylinder. This extension, in turn, sequentially pushes the double-headed connecting rod 44, the push rod 43, and the wedge block 42, causing the wedge block 42 to be ejected from the radial groove and clamp the center hole of the gear. This achieves rapid positioning and clamping of the gear, thereby improving the gear processing efficiency. After all the counterweight holes on the gear are processed, the controller controls the first telescopic cylinder 45 to retract, causing the inclined surface at the upper end of the push rod 43 to disengage from the pressure on the inclined surface of the wedge block 42. This causes the wedge block 42 to lose its clamping force on the gear, facilitating the rapid removal of the gear from the support column 41 and further improving the gear processing efficiency.

[0050] like Figure 5 and Figure 7 As shown, fixed guide sleeves 47 are evenly spaced along the circumference below the stepped surface of the support column 41; the fixed guide sleeves 47 are fixedly connected to the support column 41 by a mounting plate; the inner diameter of the fixed guide sleeves 47 is the same as the diameter of the drilling cutting section 61 on the combined drill bit 6.

[0051] By uniformly spaced fixed guide sleeves 47 along the circumferential direction below the stepped surface of the support column 41, when the controller controls the drilling component 5 to drive the combined drill bit 6 to drill into the counterweight hole that has been machined into the bottom hole, the drilling cutting section 61 at the lower end of the combined drill bit 6 passes through the gear and enters the fixed guide sleeve 47 below. Then, when the upper reaming cutting section 62 drills the bottom hole, the drilling cutting section 61 extending from the fixed guide sleeve 47 below can better stabilize the combined drill bit 6, thereby improving the stability of the combined drill bit 6 during the cutting process, and thus improving the machining accuracy of the reaming cutting section 62, which in turn improves the machining accuracy of the counterweight hole on the gear.

[0052] like Figure 3 and Figure 5 As shown, an air blowing pipe 48 is provided below the fixed guide sleeve 47; the air outlet of the air blowing pipe 48 is vertically aligned with the fixed guide sleeve 47 below the combined drill bit 6; the air blowing pipe 48 is connected to an external positive pressure air source; the air blowing pipe 48 is fixedly connected to the workbench 1 through a support pipe.

[0053] By installing an air blowing pipe 48 below the fixed guide sleeve 47 directly opposite the combined drill bit 6, when the reaming cutting section 62 of the combined drill bit 6 is machining the counterweight hole of the gear, high-pressure air is introduced into the air blowing pipe 48 through an external air compressor and other high-pressure air sources. The high-pressure air is then sprayed from the air blowing pipe 48 into the fixed guide sleeve 47. On the one hand, the high-pressure airflow blowing upward from below the fixed guide sleeve 47 can prevent the cuttings processed by the combined drill bit 6 above from falling into the fixed guide sleeve 47, which would cause the drilling cutting section 61 of the lower part of the combined drill bit 6 to get stuck in the fixed guide sleeve 47 or scratch the inner hole of the fixed guide sleeve 47, thus reducing the limiting accuracy of the fixed guide sleeve 47. On the other hand, the high-pressure air blown into the fixed guide sleeve 47 has a cooling effect on the combined drill bit 6, thereby improving the cutting performance of the combined drill bit 6.

[0054] like Figure 2 and Figure 5 As shown, the space between the fixed guide sleeve 47 and the gear to be processed, as well as the space around it, is surrounded by a collection box 49; the collection box 49 is a rotating cavity; the lower edge of the collection box 49 is in contact with the side of the mounting plate on which the fixed guide sleeve 47 is installed; the upper edge of the collection box 49 is close to the gear to be processed and has a gap.

[0055] By setting a collection box 49 around the fixed guide sleeve 47 and the gear to be processed, the chips generated by the reaming cutting section 62 on the combined drill bit 6 fall from the counterweight hole into the space between the fixed guide sleeve 47 and the gear to be processed. Since there is a blower pipe 48 below the fixed guide sleeve 47 that continuously blows high-pressure air upwards, the chips are easily blown up, causing the processing environment to become dirty and messy, and posing a risk of injury to workers loading and unloading. The collection box 49 can prevent the chips from flying around, thereby improving the cleanliness of the processing environment and reducing the danger to workers.

[0056] like Figure 1 As shown, the bottom surface of the collection box 49 is placed on the workbench 1; a limiting block 491 is provided on the outer cylindrical surface of the collection box 49 near the lower edge; a limiting pin 492 is provided on the workbench 1 and inserted into the upper limit hole of the limiting block 491.

[0057] The collection box 49 is positioned and limited by being inserted into the limit pin 492, thereby ensuring the accuracy of its placement and preventing displacement of the collection box 49 due to vibrations generated during drilling. This also avoids collisions with the rotating disk 3, the mounting plate, or the gear to be processed, thus improving the safety of equipment operation. The insertion of the limit pin 492 also makes it easy to remove the collection box 49 from the worktable 1, facilitating the flushing of chips inside the collection box 49 and making it easier for workers to clean the equipment.

[0058] like Figures 3 to 5 As shown, the rotating component 2 includes a rotating support 21, a drive gear 22, and a servo motor 23 with a brake; the rotating disk 3 is rotatably connected to the worktable 1 via the rotating support 21; the gear ring fixedly connected to the rotating disk 3 meshes with the drive gear 22; the drive gear 22 is fixedly connected to the rotating shaft of the servo motor 23; and the servo motor 23 is fixedly connected to the worktable 1.

[0059] The controller controls the servo motor 23 with electromagnetic brake function through electrical signals. After the controller drives the rotating disk 3 and then drives the gear on the positioning and clamping component 4 to rotate a certain angle, it can stop accurately, thereby making the precision of the processed counterweight hole higher and improving the processing quality of the gear.

[0060] like Figures 9 to 11 As shown, the drilling component 5 includes a vertical support frame 51, a servo feed unit 52, a mounting block 53, an electric spindle 54, a guide rod 55, a fixing plate 56, a connecting plate 57, a movable guide sleeve 58, and a second telescopic cylinder 59; the lower end of the vertical support frame 51 is fixedly connected to the worktable 1; the servo feed unit 52 is vertically arranged on the vertical support frame 51 near the rotating disk 3; the servo feed unit 52 is provided with a mounting block 53 for mounting the electric spindle 54; the electric spindle 54 is vertically downward, and the electric spindle 54's... The combined drill bit 6 is fixedly connected to the lower rotating shaft; the movable guide sleeve 58 is sleeved on the reaming cutting section 62 of the combined drill bit 6; the movable guide sleeve 58 is fixedly connected to the fixed plate 56; the fixed plate 56 is fixedly connected to the lower end of the guide rod 55; the guide rod 55 is slidably connected to the mounting block 53; the upper end of the guide rod 55 is fixedly connected to the connecting plate 57; the connecting plate 57 is fixedly connected to the rotating shaft of the second telescopic cylinder 59; the second telescopic cylinder 59 is fixedly connected to the side wall of the mounting block 53 through a cylinder support plate.

[0061] The controller uses electrical signals to control the servo feed unit 52 to drive the mounting block 53 downwards, which in turn drives the combined drill bit 6 rotating on the electric spindle 54 to drill the counterweight hole of the gear. When the drilling section 61 on the combined drill bit 6 is drilling the bottom hole of the counterweight hole, the controller uses electrical signals to control the control valve of the second telescopic cylinder 59, causing the second telescopic cylinder 59 to drive the connecting plate 57, guide rod 55, mounting plate, and movable guide sleeve 58 downwards. This positions the movable guide sleeve 58 at the bottom of the reaming section 62. By placing the drill cutting section 61 closer to the gear, the guiding and limiting effect is improved, thereby enhancing the stability of the drill cutting section 61 during drilling and improving the machining quality of the gear counterweight hole. Before the reaming cutting section 62 on the combined drill bit 6 performs further machining on the bottom hole of the counterweight hole, the controller controls the second telescopic cylinder 59 to extend, thereby driving the movable guide sleeve 58 to move to the uppermost end of the reaming cutting section 62. This prevents the movable guide sleeve 58 and the fixed plate 56 from colliding with the gear during drilling, thus ensuring safety.

[0062] like Figures 10 to 12 As shown, a rotating ring 71 is provided at the lower end of the movable guide sleeve 58; the rotating ring 71 is rotatably connected to the inner ring of the fixed disk 73 through a bearing 72; the fixed disk 73 is fixedly connected to the fixed plate 56; two sets of bristles 74 are symmetrically arranged radially on the inner ring of the rotating ring 71.

[0063] By setting a freely rotatable rotating ring 71 below the movable guide sleeve 58, and setting two sets of bristles 74 on the inner ring of the rotating ring 71, the two sets of bristles 74 extend into the two cutting grooves on the reaming cutting section 62 of the combined drill bit 6, and then, as the second telescopic cylinder 59 drives the movable guide sleeve 58 to move to the lower end of the reaming cutting section 62, since the rotating ring 71 can rotate freely, the two sets of bristles 74 can move along the cutting grooves, thereby achieving the removal of the cutting material adhering to the cutting grooves, thereby improving the cleanliness of the combined drill bit 6, and thus helping to improve the drilling quality.

[0064] like Figure 12 As shown, the inner ring of the rotating ring 71 is covered with a layer of wear-resistant rubber 75.

[0065] By covering the inner ring of the rotating ring 71 with a layer of wear-resistant rubber 75, the wear-resistant rubber 75 fits more tightly with the outer circle of the reaming cutting section 62 of the combined drill bit 6 during the rotation of the rotating ring 71, and will not get stuck. This allows the wear-resistant rubber layer 75 to scrape off the chips adhering to the outer circle of the reaming cutting section 62, thereby achieving the removal of chips adhering to the cutting surface, improving the cleanliness of the combined drill bit 6, and thus improving the drilling quality.

[0066] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A drilling device for gear machining, characterized in that: The system includes a worktable (1), a rotating component (2), a rotating disk (3), a positioning and clamping component (4), a drilling component (5), and a combined drill bit (6). The rotating disk (3) is mounted on the worktable (1) via the rotating component (2). The rotating component (2) drives the rotating disk (3) to rotate. The positioning and clamping component (4) is positioned at the center of the rotating disk (3). The positioning and clamping component (4) is used to position and clamp the gear parts to be processed. The combined drill bit (6) is mounted on the drilling component (5) above the positioning and clamping component (4). The combined drill bit (6) includes a drilling cutting section (61) and a reaming cutting section (62). The drilling component (5) is fixedly connected to the worktable (1). The positioning and clamping component (4) includes a support column (41), and the lower end of the support column (41) is fixedly connected above the through hole in the center of the rotating disk (3); the upper end of the support column (41) is provided with a stepped surface after the diameter is reduced; Fixed guide sleeves (47) are evenly spaced along the circumference below the stepped surface of the support column (41); the fixed guide sleeves (47) are fixedly connected to the support column (41) by a mounting plate; the inner diameter of the fixed guide sleeves (47) is the same as the diameter of the drilling cutting section (61) on the combined drill bit (6).

2. The drilling device for gear machining according to claim 1, characterized in that: The positioning and clamping component (4) further includes a wedge (42), a push rod (43), a double-headed connecting rod (44), a first telescopic cylinder (45), and a mounting flange (46); radial grooves are evenly spaced along the circumference on the cylindrical surface of the support column (41) after its diameter is reduced; the wedge (42) is slidably connected in the radial grooves; the center of the support column (41) is a hollow structure, and the push rod (43) is slidably connected in the hollow structure; the inclined surface of the upper end of the push rod (43) is in contact with the inclined surface of the wedge (42); the lower end of the push rod (43) is fixedly connected to the cylinder rod of the first telescopic cylinder (45) through the double-headed connecting rod (44); the first telescopic cylinder (45) is fixedly connected to the lower end surface of the support column (41) through the mounting flange (46).

3. The drilling device for gear machining according to claim 2, characterized in that: An air blowing pipe (48) is provided below the fixed guide sleeve (47); the air outlet of the air blowing pipe (48) is vertically aligned with the fixed guide sleeve (47) below the combined drill bit (6); the air blowing pipe (48) is connected to an external positive pressure air source; the air blowing pipe (48) is fixedly connected to the workbench (1) through a support pipe.

4. The drilling device for gear machining according to claim 3, characterized in that: The space between the fixed guide sleeve (47) and the gear to be processed, as well as the space around it, is surrounded by a collection box (49); the collection box (49) is a rotating cavity; the lower edge of the collection box (49) is in contact with the side of the mounting plate on which the fixed guide sleeve (47) is installed; the upper edge of the collection box (49) is close to the gear to be processed and has a gap.

5. A drilling device for gear machining according to claim 4, characterized in that: The bottom surface of the collection box (49) is placed on the workbench (1); a limiting block (491) is provided on the outer cylindrical surface of the collection box (49) near the lower edge; a limiting pin (492) is provided on the workbench (1) and inserted into the upper limit hole of the limiting block (491).

6. The drilling device for gear machining according to claim 1, characterized in that: The rotating component (2) includes a rotating support (21), a drive gear (22), and a servo motor (23) with a brake; the rotating disk (3) is rotatably connected to the worktable (1) via the rotating support (21); the gear ring fixedly connected to the rotating disk (3) meshes with the drive gear (22); the drive gear (22) is fixedly connected to the shaft of the servo motor (23); the servo motor (23) is fixedly connected to the worktable (1).

7. The drilling device for gear machining according to claim 1, characterized in that: The drilling component (5) includes a vertical support frame (51), a servo feed unit (52), a mounting block (53), an electric spindle (54), a guide rod (55), a fixing plate (56), a connecting plate (57), a movable guide sleeve (58), and a second telescopic cylinder (59); the lower end of the vertical support frame (51) is fixedly connected to the worktable (1); the servo feed unit (52) is vertically arranged on the vertical support frame (51) near the rotating disk (3); the servo feed unit (52) is provided with a mounting block (53) for mounting the electric spindle (54); the electric spindle (54) is vertically downward, and the electric spindle ( The combined drill bit (6) is fixedly connected to the lower end of the rotating shaft of the combined drill bit (6); the movable guide sleeve (58) is sleeved on the reaming cutting section (62) of the combined drill bit (6); the movable guide sleeve (58) is fixedly connected to the fixed plate (56); the fixed plate (56) is fixedly connected to the lower end of the guide rod (55); the guide rod (55) is slidably connected to the mounting block (53); the upper end of the guide rod (55) is fixedly connected to the connecting plate (57); the connecting plate (57) is fixedly connected to the second telescopic cylinder (59); the second telescopic cylinder (59) is fixedly connected to the side wall of the mounting block (53) through the cylinder support plate.

8. A drilling device for gear machining according to claim 7, characterized in that: The lower end of the movable guide sleeve (58) is provided with a rotating ring (71); the rotating ring (71) is rotatably connected to the inner ring of the fixed disk (73) through a bearing (72); the fixed disk (73) is fixedly connected to the fixed plate (56); the inner ring of the rotating ring (71) is symmetrically provided with two sets of bristles (74) along the radial direction.

9. A drilling device for gear machining according to claim 8, characterized in that: The inner ring of the rotating ring (71) is covered with a layer of wear-resistant rubber (75).

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