Drilling device for gear machining

Abstract

The invention belongs to the technical field of drilling equipment, and particularly relates to a gear machining drilling device which comprises a workbench, a rotating component, a rotating disc, a positioning and clamping component, a drilling component and a combined drill bit. The combined drill bit is matched with the control process of segmented drilling, on one hand, compared with one-time drilling, segmented drilling not only reduces power input of large cutting force, but also vibration generated by the large cutting force easily causes positioning and clamping failure, and therefore the segmented drilling can improve the machining quality of the gear counterweight hole; on the other hand, due to the fact that after one-time clamping, all balance weight holes in the gear can be machined within a short waiting time, compared with the machining mode that drilling and chambering are conducted in different procedures, the ineffective time of secondary clamping and intermediate transferring is shortened, and the machining efficiency of the gear is improved; and meanwhile, the automation degree is high, so that one person can look after multiple machining devices for simultaneous machining, the labor cost is saved, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, in particular to a drilling device for gear processing. Background Art

[0002] In order to reduce the weight of the gear and facilitate the grasping and use of the gear during use, multiple weight-reducing holes are machined on the gear. In order to ensure that the gear can operate normally without deviation during operation, the machined 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 method of drilling lightening holes on gears is generally to use a drilling machine. A drill bit is fixedly mounted on the drilling machine spindle, and the motor spindle drives the drill bit to rotate at high speed through a pulley, thereby drilling the lightening hole on the gear. Patent No. CN204584341U discloses a drilling device for drilling lightening holes on the end face of a starting clutch gear. The device comprises a horizontal workbench and a spindle box and a stepper motor fixedly mounted at both ends of the workbench. 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 workbench between the spindle box and the stepper motor. A connecting plate is fixedly mounted on the motor shaft of the stepper motor, and a dividing head is fixedly mounted on the connecting plate. A clamping portion is mounted on the dividing head chuck of the dividing head. The connecting plate is located on the two guide rails and can perform reciprocating motion. The tapered drill bit and the dividing head chuck are opposite each other. The center line of the tapered drill bit is parallel to the center line of the dividing head chuck.

[0004] This equipment uses a tapered drill bit to drill the gear's counterweight hole in one go. This one-time drilling not only requires a large cutting force, but the vibration generated by the large cutting force can easily lead to positioning and clamping failure, which in turn reduces the processing quality. Furthermore, the use of a tapered drill bit requires the use of dedicated drilling equipment, and the counterweight hole it produces is a tapered hole. This method is not suitable for gears that require a tapered counterweight hole. Therefore, the use of this processing method is quite restrictive and difficult to promote and apply. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention proposes a drilling device for gear machining. This invention primarily addresses the existing problem of a tapered drill bit drilling the counterweight hole of a gear in one go. This drilling requires not only a large cutting force, but also the vibrations generated by the large cutting force can easily lead to positioning and clamping failure, thus reducing machining quality. Furthermore, this machining method is quite restrictive.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the present invention provides a drilling device for gear processing, including a workbench, a rotating part, a rotating disk, a positioning and clamping part, a drilling part and a combination drill bit; the rotating disk is installed on the workbench through the rotating part; the rotating part is used to drive the rotating disk to rotate; the positioning and clamping part is arranged at the center position of the rotating disk; the positioning and clamping part is used to position and clamp the gear parts to be processed; the combination drill bit installed on the drilling part is arranged above the positioning and clamping part; the combination drill bit includes a drilling cutting section and a reaming cutting section; the drilling part is fixedly connected to the workbench.

[0007] During operation, the gear to be processed, which has been turned with a center hole and an end face, is installed on the positioning and clamping component, and is positioned and clamped with the center hole and the end face of the gear. After completion, the controller controls the drilling component through an electrical signal to drive the combination drill bit to rotate and feed downward continuously. When the drilling cutting segment with a smaller diameter at the lower end of the combination drill bit completely penetrates the gear, the signal can be obtained through a proximity switch, or directly obtained through the number of pulses received by the feed servo motor. The controller controls the drilling component to pull the combination drill bit out of the counterweight hole processed on the gear, and then controls the drilling component to drive the combination drill bit to reduce the speed and set value. The controller controls the drilling component again to drive the combination drill bit to drill into the counterweight hole with the bottom hole processed. When the reaming cutting segment of the combination drill bit completely penetrates the gear, the controller controls the drilling component to pull the combination drill bit out of the counterweight hole with the size processed on the gear. After the combination drill bit is completely pulled out, the controller controls the rotating component to drive the rotating disk to rotate through an electrical signal, and then drives the positioning clamping component to drive the combination drill bit that has been After processing a counterweight hole, the gear rotates to a set angle, and then the controller controls the drilling component to drive the combined drill bit to process the next counterweight hole. The controller realizes the processing of all the counterweight holes on the gear by cyclically alternating the drilling component and the rotating component. This scheme uses the combined drill bit to cooperate with the control process of segmented drilling. On the one hand, segmented drilling not only reduces the power input of large cutting force compared to one-time drilling, but also the vibration generated by large cutting force can easily lead to positioning and clamping failure, thereby reducing the processing quality. Therefore, segmented drilling can improve the processing quality of the gear counterweight hole, thereby improving the gear performance. On the other hand, since each counterweight hole on the gear can be processed with less waiting time after one clamping, the ineffective time of secondary clamping and intermediate transfer is reduced compared to the processing method of drilling and reaming in different steps, thereby improving the processing efficiency of the gear. At the same time, the degree of automation is high, so one person can look after multiple processing equipment for simultaneous processing, which saves labor costs and improves processing efficiency.

[0008] Preferably, the positioning and clamping components include a support column, a wedge block, a push rod, a double-headed connecting rod, a first telescopic cylinder and a mounting flange; the lower end of the support column is fixedly connected above the through hole in the center of the rotating disk; the upper end of the support column is provided with a step surface after the diameter is shrunk, and radial slide grooves are evenly spaced along the circumferential direction on the cylindrical surface after the diameter is shrunk; the wedge block is slidably connected in the radial slide groove; 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 block; the lower end of the push rod is fixedly connected to the cylinder rod of the first telescopic cylinder through a double-headed connecting rod; the first telescopic cylinder is fixedly connected to the lower end surface of the support column through the mounting flange.

[0009] During operation, the center hole of the gear to be processed is placed on the contracted diameter of the upper end of the support column, and the end face of the gear is aligned with the end face after the contraction. The controller controls the control valve of the first telescopic cylinder through an electrical signal to extend the first contraction cylinder, and then pushes the double-headed connecting rod, the push rod and the wedge block in sequence, so that the wedge block is ejected from the radial slide groove and clamps the center hole of the gear, thereby achieving rapid positioning and clamping of the gear, thereby improving gear processing efficiency. After all the counterweight holes on the gear are processed, the controller controls the first telescopic cylinder to retract, thereby separating the inclined surface of the upper end of the push rod from squeezing the upper inclined surface of the wedge block, causing the wedge block to lose its clamping force on the gear, thereby facilitating the rapid removal of the gear from the support column, thereby improving gear processing efficiency.

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

[0011] By arranging fixed guide sleeves at even intervals along the circumferential direction below the step surface of the support column, when the controller controls the drilling component again to drive the combination drill bit to drill into the counterweight hole in which the bottom hole has been processed, the drilling cutting section at the lower end of the combination drill bit passes through the gear and enters the fixed guide sleeve below. Then, when the reaming cutting section above drills the bottom hole, the drilling cutting section extending out of the fixed guide sleeve below can better stabilize the combination drill bit, thereby improving the stability of the combination drill bit during the cutting process, thereby improving the processing accuracy of the reaming cutting section, and also improving the processing 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 vertically corresponds to the fixed guide sleeve below the combination drill bit; the air blowing pipe is connected to an external positive pressure air source; the air blowing pipe is fixedly connected to the workbench through a support pipe.

[0013] By arranging an air blowing pipe under the fixed guide sleeve directly opposite to the combination drill bit, when the reaming and cutting section of the combination drill bit processes the counterweight hole of the gear, high-pressure air is introduced into the air blowing pipe through an external air compressor and other high-pressure air sources, and then the high-pressure air is ejected from the air blowing pipe to the fixed guide sleeve. On the one hand, the high-pressure air flow blows upward from the bottom of the fixed guide sleeve, which can prevent the cuttings processed by the upper combination drill bit from falling into the fixed guide sleeve, thereby causing the drilling and cutting section of the lower section of the combination drill bit to get stuck in the fixed guide sleeve or scratch 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 combination drill bit, thereby improving the cutting performance of the combination drill bit.

[0014] Preferably, the space between and around the fixed guide sleeve and the gear to be processed is surrounded by a collection box; the collection box is a cavity of a rotating structure; 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 a gap is left.

[0015] By arranging a collection box on the periphery of the fixed guide sleeve and the gear to be processed, the chips generated by the reaming cutting section of the combination drill bit will fall from the counterweight hole to between the fixed guide sleeve and the gear to be processed. Since there is an air blower under the fixed guide sleeve that continuously blows high-pressure air upward, the chips are easily lifted up, making the processing environment dirty and there is a risk of injury to workers who load and unload materials. 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 workbench; a limit block is provided on the outer cylindrical surface of the collection box near the lower edge; and a limit pin is provided on the workbench to be inserted into the upper limit hole of the limit block.

[0017] The collection box is positioned and limited by being plugged into the limit pin, thereby ensuring the accuracy of its placement, preventing the vibration generated during the drilling process from causing displacement of the collection box, and avoiding collision with the rotating disk, mounting plate or gear to be processed, thereby improving the safety of equipment operation; the limit pin plug-in also makes it easy to remove the collection box from the workbench, thereby facilitating the flushing of the chips in the collection box, and making it more convenient for workers to clean the equipment.

[0018] Preferably, the rotating component includes a rotating support, a driving gear and a servo motor with a brake; the rotating disk is rotatably connected to the workbench through the rotating support; the ring gear fixedly connected to the rotating disk is engaged with the driving gear; the driving gear is fixedly connected to the rotating shaft of the servo motor; and the servo motor is fixedly connected to the workbench.

[0019] The controller controls the servo motor with electromagnetic brake function through electrical signals, and then the controller drives the rotating disk and then drives the gear on the positioning clamping component to rotate a certain angle and then stop accurately, thereby making the precision of the processed counterweight hole higher and improving the processing 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 workbench; the servo feed unit is vertically arranged on the side of the vertical support frame close to the rotating disk; a mounting block for mounting the electric spindle is provided on the servo feed unit; the electric spindle is vertically downward, and the combination drill bit is fixedly connected to the rotating shaft of the lower end of the electric spindle; the movable guide sleeve is sleeved on the reaming cutting section of the combination 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 through a cylinder support plate.

[0021] The controller controls the servo feed unit through electrical signals to drive the mounting block to feed downward, thereby driving the combined drill bit rotating on the electric spindle to drill the counterweight hole of the gear. When the drilling cutting section on the combined drill bit is drilling the bottom hole of the counterweight hole, the controller controls the control valve of the second telescopic cylinder through electrical signals, thereby causing the second telescopic cylinder to drive the connecting plate, guide rod, mounting plate and movable guide sleeve to move downward, thereby causing the movable guide sleeve to be at the lower end of the reaming cutting section, thereby making the guide restriction effect better by being closer to the drilling cutting section, thereby improving the stability of the drilling cutting section during drilling, thereby improving the processing quality of the gear counterweight hole; before the reaming cutting section on the combined drill bit processes the bottom hole of the counterweight hole again, the controller controls the second telescopic cylinder to extend, thereby driving the movable guide sleeve to move to the upper end of the reaming cutting section, thereby preventing the movable guide sleeve and the fixed plate from colliding with the gear during drilling of the reaming cutting section, thereby 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 through a bearing; the fixed disk is fixedly connected to the fixed plate; and two groups of bristles are symmetrically provided on the inner ring of the rotating ring along the radial direction.

[0023] By arranging a freely rotatable rotating ring below the movable guide sleeve and arranging two groups of bristles on the inner ring of the rotating ring, the two groups of bristles are respectively extended into the two cutting grooves on the reaming cutting section of the combination drill bit. Then, in the process of the second telescopic cylinder driving the movable guide sleeve to move to the lowermost end of the reaming cutting section, since the rotating ring can rotate freely, the two groups of bristles can move along the cutting groove, thereby realizing the removal of the cutting adhesion in the cutting, thereby improving the cleanliness of the combination drill bit, and thus helping to improve the drilling processing quality.

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

[0025] By coating a wear-resistant rubber layer on the inner ring of the rotating ring, the wear-resistant rubber layer fits more closely with the outer circle of the reaming cutting section of the combination drill bit during the rotation of the rotating ring and will not get stuck, so that the chips adhering to the outer circle of the reaming cutting section can be scraped out, thereby achieving the removal of the chips adhering to the cutting inside, thereby improving the cleanliness of the combination drill bit, and thus helping to improve the drilling processing quality.

[0026] The beneficial effects of the present invention are as follows: 1. The present invention adopts the control process of segmented drilling by combining a drill bit. On the one hand, segmented drilling not only reduces the power input of large cutting force compared with one-time drilling, but also the vibration generated by large cutting force can easily lead to positioning and clamping failure, thereby reducing the processing quality. Therefore, segmented drilling can improve the processing quality of gear counterweight holes, thereby improving gear performance; on the other hand, since each counterweight hole on the gear can be processed with less waiting time after one clamping, the ineffective time of secondary clamping and intermediate transfer is reduced compared with the processing method of drilling and reaming in separate steps, thereby improving the processing efficiency of the gear; at the same time, the degree of automation is high, so one person can look after multiple processing equipment for simultaneous processing, which saves labor costs and improves processing efficiency.

[0027] 2. The present invention arranges fixed guide sleeves at even intervals along the circumferential direction below the step surface of the support column. When the controller controls the drilling component again to drive the combination drill bit to drill into the counterweight hole in which the bottom hole has been processed, the drilling cutting section at the lower end of the combination drill bit passes through the gear and enters the fixed guide sleeve below. Then, when the reaming cutting section above drills the bottom hole, the drilling cutting section extending out of the fixed guide sleeve below can better stabilize the combination drill bit, thereby improving the stability of the combination drill bit during the cutting process, thereby improving the processing accuracy of the reaming cutting section, and also improving the processing accuracy of the counterweight hole on the gear.

[0028] 3. The present invention arranges an air blowing pipe below the fixed guide sleeve directly opposite to the combination drill bit, and then when the reaming and cutting section of the combination drill bit processes the counterweight hole of the gear, high-pressure air is introduced into the air blowing pipe through an external air compressor and other high-pressure air sources, and then the high-pressure air is ejected from the air blowing pipe into the fixed guide sleeve. On the one hand, the high-pressure air flow blows upward from the bottom of the fixed guide sleeve, which can prevent the cuttings processed by the upper combination drill bit from falling into the fixed guide sleeve, thereby causing the drilling and cutting section of the lower section of the combination drill bit to get stuck in the fixed guide sleeve or scratch 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 combination drill bit, thereby improving the cutting performance of the combination drill bit.

[0029] 4. In the present invention, the controller controls the servo feed unit through electrical signals to drive the mounting block to feed downward, thereby driving the combined drill bit rotating on the electric spindle to drill the counterweight hole of the gear. When the drilling cutting section on the combined drill bit is drilling the bottom hole of the counterweight hole, the controller controls the control valve of the second telescopic cylinder through electrical signals, thereby causing the second telescopic cylinder to drive the connecting plate, guide rod, mounting plate and movable guide sleeve to move downward, thereby causing the movable guide sleeve to be at the lower end of the reaming cutting section, thereby making the guide restriction effect better by being closer to the drilling cutting section, thereby improving the stability of the drilling cutting section during drilling, thereby improving the processing quality of the gear counterweight hole; before the reaming cutting section on the combined drill bit processes the bottom hole of the counterweight hole again, the controller controls the second telescopic cylinder to extend, thereby driving the movable guide sleeve to move to the upper end of the reaming cutting section, thereby preventing the movable guide sleeve and the fixed plate from colliding with the gear during drilling of the reaming cutting section, thereby ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 It is a schematic diagram of the overall structure of the drilling device of the present invention; Figure 2 It is a partial structural schematic diagram of the drilling device of the present invention; Figure 3 is a schematic structural diagram of the rotating component in the present invention at a first viewing angle; Figure 4 is a schematic structural diagram of the rotating component in the present invention at a second viewing angle; Figure 5 It is a schematic diagram of the internal structure of the drilling device of the present invention; Figure 6 It is a structural schematic diagram of the positioning and clamping component in the present invention; Figure 7 It is a schematic diagram of the internal structure of the positioning and clamping component in the present invention; Figure 8 Schematic diagram of the connection between the wedge and the mandrel in the present invention; Figure 9 is a schematic structural diagram of the drilling component of the present invention at a first viewing angle; Figure 10 is a schematic structural diagram of the drilling component of the present invention at a second viewing angle; Figure 11 It is a schematic diagram of the connection between the rotating circle and the fixed disk in the present invention; Figure 12 This is a schematic diagram of the internal connection between the rotating circle and the fixed disk in the present invention; In the figure: workbench 1, rotating part 2, rotating support 21, driving gear 22, servo motor 23, rotating disk 3, positioning clamping part 4, support column 41, wedge block 42, push rod 43, double-headed connecting rod 44, first telescopic cylinder 45, mounting flange 46, fixed guide sleeve 47, blow pipe 48, collection box 49, limit block 491, limit pin 492, drilling part 5, vertical support frame 51, servo feed unit 52, mounting block 53, electric spindle 54, guide rod 55, fixed plate 56, connecting plate 57, movable guide sleeve 58, second telescopic cylinder 59, combination drill bit 6, drilling cutting section 61, reaming cutting section 62, rotating ring 71, bearing 72, fixed disk 73, brush 74, wear-resistant rubber layer 75. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] like Figures 1 to 2 As shown, a drilling device for gear processing includes a workbench 1, a rotating component 2, a rotating disk 3, a positioning and clamping component 4, a drilling component 5 and a combination drill bit 6; the rotating disk 3 is installed on the workbench 1 through the rotating component 2; the rotating component 2 is used to drive the rotating disk 3 to rotate; the positioning and clamping component 4 is set at the center position of the rotating disk 3; the positioning and clamping component 4 is used to position and clamp the gear part to be processed; the combination drill bit 6 installed on the drilling component 5 is set above the positioning and clamping component 4; the combination drill bit 6 includes a drilling cutting segment 61 and a reaming cutting segment 62; the drilling component 5 is fixedly connected to the workbench 1.

[0034] During operation, the gear to be processed, which has been turned with a center hole and an end face, is mounted on the positioning and clamping component 4, and is positioned and clamped with the center hole and the end face of the gear. After completion, the controller controls the drilling component 5 through an electrical signal to drive the combined drill bit 6 to rotate and continuously feed downward. When the drilling cutting segment 61 with a smaller diameter at the lower end of the combined drill bit 6 completely penetrates the gear, the signal can be obtained through a proximity switch, or directly through the number of pulses received by the feeding servo motor 23. The controller controls the drilling component 5 to remove the combined drill bit 6 from the gear. The controller then controls the drilling component 5 to drive the combined drill bit 6 to reduce the speed and set value, and the controller again controls the drilling component 5 to drive the combined drill bit 6 to drill into the counterweight hole in which the bottom hole has been machined. When the reaming cutting segment 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 counterweight hole on the gear that has been machined in place. 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 through the electrical signal, and then the positioning clamping part Part 4 drives the gear on which a counterweight hole has been processed to rotate to a set angle, and then the controller controls the drilling component 5 to drive the combined drill bit 6 to process the next counterweight hole. The controller realizes the processing of all the counterweight holes on the gear by cyclically alternating the drilling component 5 and the rotating component 2; this scheme uses the combined drill bit 6 to cooperate with the control process of segmented drilling. On the one hand, segmented drilling not only reduces the power input of large cutting force compared to one-time drilling, but also the vibration generated by large cutting force can easily lead to positioning and clamping failure, thereby reducing the processing quality. Therefore, segmented drilling can improve the processing quality of the gear counterweight hole, thereby improving the gear performance; on the other hand, since each counterweight hole on the gear can be processed with less waiting time after one clamping, compared with the processing method of drilling and reaming in different steps, the ineffective time of secondary clamping and intermediate transfer is reduced, thereby improving the processing efficiency of the gear; at the same time, the degree of automation is high, so one person can look after multiple processing equipment for simultaneous processing, which saves labor costs and improves processing efficiency.

[0035] 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 step surface after the diameter is reduced, and radial slide grooves are evenly spaced along the circumferential direction on the cylindrical surface after the diameter is reduced; the wedge block 42 is slidably connected in the radial slide groove; 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 fits 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.

[0036] During operation, the center hole of the gear to be processed is placed over the contracted diameter at the upper end of the support column 41, and the end face of the gear is aligned with the end face after the contraction. The controller controls the control valve of the first telescopic cylinder 45 via an electrical signal to extend the first telescopic cylinder, thereby sequentially pushing the double-headed connecting rod 44, the push rod 43, and the wedge 42, causing the wedge 42 to be ejected from the radial slot and clamp the center hole of the gear, thereby achieving rapid positioning and clamping of the gear, thereby improving gear processing efficiency. After all the counterweight holes on the gear are processed, the controller controls the first telescopic cylinder 45 to retract, thereby separating the inclined surface of the upper end of the push rod 43 from squeezing the inclined surface of the wedge 42, thereby causing the wedge 42 to lose its clamping force on the gear, thereby facilitating the rapid removal of the gear from the support column 41, thereby improving gear processing efficiency.

[0037] like Figure 5 and Figure 7 As shown, fixed guide sleeves 47 are evenly spaced along the circumferential direction below the step surface of the support column 41; the fixed guide sleeves 47 are fixedly connected to the support column 41 through 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 combination drill bit 6.

[0038] By arranging fixed guide sleeves 47 at even intervals along the circumferential direction below the step surface of the support column 41, when the controller controls the drilling component 5 again to drive the combination drill bit 6 to drill into the counterweight hole in which the bottom hole has been processed, the drilling cutting segment 61 at the lower end of the combination drill bit 6 passes through the gear and enters the fixed guide sleeve 47 below. Then, when the reaming cutting segment 62 above drills the bottom hole, the drilling cutting segment 61 extending out of the fixed guide sleeve 47 below can better stabilize the combination drill bit 6, thereby improving the stability of the combination drill bit 6 during the cutting process, thereby improving the processing accuracy of the reaming cutting segment 62, and thus improving the processing accuracy of the counterweight hole on the gear.

[0039] 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 vertically corresponds to the fixed guide sleeve 47 below the combination 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.

[0040] By arranging an air blowing pipe 48 below the fixed guide sleeve 47 facing the combination drill bit 6, when the reaming cutting section 62 of the combination drill bit 6 processes 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, and then the high-pressure air is ejected from the air blowing pipe 48 into the fixed guide sleeve 47. On the one hand, the high-pressure air flow blows upward from the bottom of the fixed guide sleeve 47, which can prevent the cuttings processed by the upper combination drill bit 6 from falling into the fixed guide sleeve 47, thereby causing the drilling cutting section 61 of the lower section of the combination drill bit 6 to get stuck in the fixed guide sleeve 47 or scratch the inner hole of the fixed guide sleeve 47, thereby 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 combination drill bit 6, thereby improving the cutting performance of the combination drill bit 6.

[0041] like Figure 2 and Figure 5 As shown, the space between the fixed guide sleeve 47 and the gear to be processed and the surrounding space is surrounded by a collection box 49; the collection box 49 is a cavity of a rotary structure; 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 mounted; the upper edge of the collection box 49 is close to the gear to be processed and a gap is left.

[0042] By setting a collection box 49 on the periphery of the fixed guide sleeve 47 and the gear to be processed, the chips generated by the reaming cutting section 62 on the combination drill bit 6 will fall from the counterweight hole to between the fixed guide sleeve 47 and the gear to be processed. Since there is an air blower 48 under the fixed guide sleeve 47 that continuously blows high-pressure air upward, the chips are easily lifted up, causing the processing environment to be dirty and there is a risk of injury to workers who load and unload materials. 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.

[0043] like Figure 1 As shown, the bottom surface of the collection box 49 is placed on the workbench 1; a limit block 491 is provided on the outer cylindrical surface of the collection box 49 near the lower edge; a limit pin 492 is provided on the workbench 1 and inserted into the upper limit hole of the limit block 491.

[0044] The collection box 49 is positioned and limited by being plugged into the limit pin 492, thereby ensuring the accuracy of its placement, preventing the vibration generated during the drilling process from causing displacement of the collection box 49, and avoiding collision with the rotating disk 3, the mounting plate or the gear to be processed, thereby improving the safety of the equipment operation; the plug-in form of the limit pin 492 also makes it easy to remove the collection box 49 from the workbench 1, thereby facilitating the flushing of the chips in the collection box 49, and making it more convenient for workers to clean the equipment.

[0045] like Figures 3 to 5 As shown, the rotating component 2 includes a rotating support 21, a driving gear 22 and a servo motor 23 with a brake; the rotating disk 3 is rotatably connected to the workbench 1 through the rotating support 21; the ring gear fixedly connected to the rotating disk 3 is engaged with the driving gear 22; the driving gear 22 is fixedly connected to the rotating shaft of the servo motor 23; and the servo motor 23 is fixedly connected to the workbench 1.

[0046] The controller controls the servo motor 23 with electromagnetic brake function through electrical signals, and then the controller drives the rotating disk 3 and then drives the gear on the positioning clamping component 4 to rotate a certain angle and stop accurately, thereby making the precision of the processed counterweight hole higher and improving the processing quality of the gear.

[0047] 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 workbench 1; the servo feed unit 52 is vertically arranged on the side of the vertical support frame 51 close to 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 is The combination drill bit 6 is fixedly connected to the lower end rotating shaft; the movable guide sleeve 58 is sleeved on the reaming cutting section 62 of the combination 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 the cylinder support plate.

[0048] The controller controls the servo feed unit 52 through electrical signals to drive the mounting block 53 to feed downward, thereby driving the combination drill bit 6 rotating on the electric spindle 54 to drill the counterweight hole of the gear. When the drilling cutting segment 61 on the combination drill bit 6 is drilling the bottom hole of the counterweight hole, the controller controls the control valve of the second telescopic cylinder 59 through electrical signals, thereby causing the second telescopic cylinder 59 to drive the connecting plate 57, the guide rod 55, the mounting plate and the movable guide sleeve 58 to move downward, thereby causing the movable guide sleeve 58 to be at the lower end of the reaming cutting segment 62, thereby The use of the closer drilling cutting section 61 makes the guiding and limiting effect better, thereby improving the stability of the drilling cutting section 61 during drilling, thereby improving the processing quality of the gear counterweight hole; before the reaming cutting section 62 on the combination drill bit 6 is processed 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, thereby preventing the movable guide sleeve 58 and the fixed plate 56 from colliding with the gear during drilling of the reaming cutting section 62, thereby ensuring safety.

[0049] 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; the inner ring of the rotating ring 71 is symmetrically provided with two groups of bristles 74 along the radial direction.

[0050] By arranging a freely rotatable rotating ring 71 below the movable guide sleeve 58, and arranging two groups of bristles 74 on the inner ring of the rotating ring 71, the two groups of bristles 74 respectively extend into the two cutting grooves on the reaming cutting section 62 on the combination drill bit 6, and then in the process of the second telescopic cylinder 59 driving the movable guide sleeve 58 to move to the lowermost end of the reaming cutting section 62, since the rotating ring 71 can rotate freely, the two groups of bristles 74 can move along the cutting groove, thereby realizing the removal of the cutting adhesion inside the cutting, thereby improving the cleanliness of the combination drill bit 6, and thus helping to improve the processing quality of drilling.

[0051] like Figure 12 As shown, the inner ring of the rotating ring 71 is covered with a wear-resistant rubber layer 75 .

[0052] By coating the inner ring of the rotating ring 71 with a wear-resistant rubber layer 75, the wear-resistant rubber layer 75 can fit more closely with the outer circle of the reaming cutting section 62 of the combination drill bit 6 during the rotation of the rotating ring 71 without getting stuck, thereby being able to scrape out the chips adhering to the outer circle of the reaming cutting section 62, thereby achieving the removal of the chips adhering to the cutting inside, thereby improving the cleanliness of the combination drill bit 6, and thus helping to improve the processing quality of drilling.

[0053] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A drilling device for gear machining, characterized in that: The invention comprises a workbench (1), a rotating component (2), a rotating disk (3), a positioning clamping component (4), a drilling component (5) and a combined drill bit (6); the rotating disk (3) is mounted on the workbench (1) via the rotating component (2); the rotating component (2) is used to drive the rotating disk (3) to rotate; the positioning clamping component (4) is arranged at the center of the rotating disk (3); the positioning clamping component (4) is used to position and clamp the gear part to be processed; the combined drill bit (6) mounted on the drilling component (5) is arranged above the positioning clamping component (4); the combined drill bit (6) comprises a drilling cutting section (61) and a reaming cutting section (62); the drilling component (5) is fixedly connected to the workbench (1); The positioning clamping component (4) includes a support column (41), the lower end of which is fixedly connected above the through hole in the center of the rotating disk (3); and the upper end of the support column (41) is provided with a stepped surface after shrinking the diameter. Fixed guide sleeves (47) are evenly spaced along the circumferential direction below the step surface of the support column (41); the fixed guide sleeves (47) are fixedly connected to the support column (41) via 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. A gear drilling device according to claim 1, characterized in that: The positioning and clamping component (4) also 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 circumferential direction on the cylindrical surface of the support column (41) after the diameter is reduced; the wedge (42) is slidably connected in the radial groove; 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. A gear drilling device according to claim 2, characterized in that: An air blowing pipe (48) is provided below the fixed guide sleeve (47); an air outlet of the air blowing pipe (48) vertically corresponds to 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; and the air blowing pipe (48) is fixedly connected to the workbench (1) through a supporting pipe.

4. A gear drilling device according to claim 3, characterized in that: The space between the fixed guide sleeve (47) and the gear to be processed and the surrounding space is surrounded by a collection box (49); the collection box (49) is a cavity of a rotary structure; 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 mounted; the upper edge of the collection box (49) is close to the gear to be processed and a gap is left.

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

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

7. The gear drilling device according to claim 1, characterized in that: The drilling component (5) comprises a vertical support frame (51), a servo feed unit (52), a mounting block (53), an electric spindle (54), a guide rod (55), a fixed 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 workbench (1); the servo feed unit (52) is vertically arranged on the side of the vertical support frame (51) close to the rotating disk (3); the mounting block (53) for mounting the electric spindle (54) is arranged on the servo feed unit (52); the electric spindle (54) is vertically downward, and the electric spindle (54) is ) is fixedly connected to the lower end rotation 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 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.

8. The gear drilling device according to claim 7, characterized in that: 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); and two groups of bristles (74) are symmetrically provided on the inner ring of the rotating ring (71) along the radial direction.

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

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