Drilling device for exhaust duct processing

Abstract

The present invention belongs to the technical field of automatic drilling equipment, and specifically is a drilling device for exhaust duct processing, comprising a workbench, a positioning and clamping component, a transferring component, an automatic feeding component, an automatic drilling component and a loading and unloading component; the present invention automatically releases the temporarily stored exhaust pipes one by one onto the positioning and clamping component through the automatic feeding component, the positioning and clamping component positions and clamps the exhaust pipe, and the automatic drilling component processes a row of air intake holes on the exhaust pipe. During the process, it is necessary to cooperate with the transferring component to move a hole position, thereby realizing the drilling of a row of air intake holes. After all the processing is completed, the transferring component moves the positioning and clamping component and the processed exhaust pipe to the other end together, and then the controller controls the positioning and clamping component to loosen the clamping, and the loading and unloading component removes the exhaust duct processed on the positioning and clamping component, and then the controller controls the transferring component to move the positioning and clamping component to the other end, and then the above steps are repeated to realize automatic processing of the exhaust duct.

Description

Technical Field

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

[0002] The integrated exhaust duct is provided with a row of suction holes with small intervals to meet the air intake of the exhaust fan. However, in actual use, the oil stains in the exhaust duct will accumulate and drip from the suction holes. In order to solve this technical problem, there are two solutions in the prior art. One is to install a rubber plug sleeve on the suction hole, and then use the step barrier structure of the rubber plug sleeve to block the oil stains accumulated in the exhaust duct. However, the use of this structure will not only increase the production and installation cost of the plug sleeve, but also the service life of the rubber plug sleeve is short due to the erosion of oil stains, thereby increasing the subsequent maintenance cost.

[0003] Another way is to form a step-damping structure around the air intake hole of the exhaust duct by machining. Conventional methods include pressing in a metal bushing and integrally punching out a flange. The former requires additional stamping equipment to complete the process of pressing in the metal bushing, which will increase costs and there is a risk of oil penetration due to connection gaps. The latter forms a step-damping structure by directly expanding the hole inward after drilling. Although this manufacturing process exists in the existing technology, most of them are based on manual or semi-automatic fixtures to process the air intake holes on the exhaust duct, so the processing efficiency and quality cannot be guaranteed. Summary of the Invention

[0004] To address the shortcomings of the existing technology, the present invention proposes a drilling device for exhaust duct processing. The present invention is mainly used to solve the problem that existing exhaust duct drilling equipment mostly relies on manual or semi-automatic fixtures to process the air intake holes on the exhaust duct, thus the processing efficiency and processing quality cannot be guaranteed.

[0005] The technical solution adopted by the present invention to solve its technical problems is: the present invention provides a drilling device for exhaust duct processing, including a workbench, a positioning and clamping component, a transferring component, an automatic feeding component, an automatic drilling component and a loading and unloading component; the transferring component for carrying the positioning and clamping component to move is arranged along the length direction of the workbench; the positioning and clamping component for positioning and clamping the exhaust duct is arranged on the transferring component; the automatic feeding component for automatically releasing the temporarily stored exhaust duct onto the positioning and clamping component is arranged on one side of the positioning and clamping component; the automatic drilling component for processing the suction hole on the exhaust duct is arranged on the other side of the positioning and clamping component; the loading and unloading component for stacking the exhaust pipe on the automatic feeding component and removing the processed exhaust pipe from the positioning and clamping component is arranged on one side of the positioning and clamping component.

[0006] During operation, the controller controls the automatic feeding component through electric signals to automatically release the temporarily stored exhaust pipes one by one onto the positioning and clamping component. The controller controls the positioning and clamping component through electric signals to position and clamp the exhaust pipe. The controller controls the automatic drilling component through electric signals to process a row of air intake holes on the exhaust pipe after positioning and clamping. During the process, it is necessary to cooperate with the transfer component to move a hole position, thereby realizing the drilling of a row of air intake holes. After all the air intake holes on the exhaust pipe are processed, the controller controls the transfer component through electric signals to move the positioning and clamping component and the processed exhaust pipe to the other end. The rear controller controls the positioning and clamping components to loosen the clamping, and the controller controls the loading and unloading components through electrical signals to remove the exhaust duct processed on the positioning and clamping components. Then the controller controls the transferring components to move the positioning and clamping components to the other end. Then the controller controls the automatic unloading components to automatically release one of the temporarily stored exhaust pipes onto the positioning and clamping components, and then repeats the above steps to realize automatic processing of the exhaust duct. In addition, the controller realizes automatic drilling of a row of intake holes on the exhaust duct by alternately controlling the automatic drilling components and the transferring components, thereby improving work efficiency and processing accuracy.

[0007] Preferably, the automatic drilling component includes a drilling mounting plate, a feed motor, a first screw pair, a first linear guide rail, a sliding support frame, a drilling motor, a drill bit holder and a combination drill bit; the drilling mounting plate is fixedly connected to the workbench through a pad; the drilling mounting plate is slidably connected to the sliding support frame through the first linear guide rail, and the sliding support frame is driven to move by the first screw pair; both ends of the first screw pair are connected by a rotation support, and one end of the first screw pair is connected to the rotating shaft of the feed motor through a coupling; the feed motor is fixedly connected to the drilling mounting plate; one end of the sliding support frame is fixedly connected to the drilling motor; the rotating shaft of the drilling motor is sequentially connected to the coupling, the synchronous gear set, the drill bit holder and the combination drill bit, and the drilling motor drives multiple groups of the drill bit holders and the combination drill bit to rotate synchronously through the coupling and the synchronous gear set; the combination drill bit is sequentially provided with a drilling area, a friction area and an extrusion shaping area.

[0008] During operation, the controller controls the drilling motor to rotate at the drilling speed through electrical signals, and the drilling motor drives multiple sets of combined drill bits to rotate synchronously through the coupling and the synchronous gear set. Then, the controller controls the feed motor to rotate at the feed speed through electrical signals, and then drives the combined drill bit on the sliding support frame to continuously approach the exhaust duct through the first screw pair, and then completes the bottom hole drilling on the exhaust duct through the drilling area on the combined drill bit. Then, the controller controls the drilling motor to rotate at a higher speed, and at the same time controls the feed motor to rotate at a slower speed, and then through The friction zone on the combined drill bit is used to rub the bottom hole drilled on the exhaust duct until it turns red with a very small feed rate. Then the controller controls the feed motor to rotate at the feed speed, and then the curling edge around the bottom hole that has turned red with friction is squeezed to the surrounding areas through the extrusion shaping area on the combined drill bit, and a step resistance structure is formed on the inner side of the bottom hole of the suction hole, which can prevent oil stains from dripping from the suction hole. Then, the drilling and extrusion curling are formed in one step through the combined drill bit and the control of the drilling speed and feed speed, thereby improving the work efficiency and the quality of the curling.

[0009] Preferably, the automatic drilling component further includes a guide unit; the guide unit includes a guide extrusion plate, a guide element, a guide column, a spring and a guide sleeve; a plurality of the guide elements are arranged on the guide extrusion plate; the guide element is sleeved on the combination drill bit; a plurality of the guide columns are fixedly connected to the guide extrusion plate; the free end of the guide column is inserted into the guide sleeve, and the end of the guide column is in contact with the bottom of the inner hole of the guide sleeve through the spring; the guide sleeve is fixedly connected to the sliding support frame.

[0010] Preferably, the guide element includes a fixed sleeve, a bearing and a rotating guide sleeve; one end of the fixed sleeve is fixedly connected to the guide extrusion plate; the rotating guide sleeve is rotatably connected inside the fixed sleeve through the bearing; a first step hole and a second step hole are provided in the rotating guide sleeve; the aperture of the first step hole is larger than the aperture of the second step hole; the second step hole is sleeved on the combination drill bit; a spiral groove is provided on the inner wall of the second step hole; one end of the spiral groove extends to the step surface between the first step hole and the second step hole; the other end of the spiral groove is connected to the annular groove on the inner wall of the fixed sleeve along the tangential direction; an air inlet connected to the annular groove is provided on the fixed sleeve; the air inlet is connected to an external positive pressure air source.

[0011] During operation, high-pressure air from an external positive-pressure air source enters the annular groove through the air inlet on the fixed sleeve, and then enters the spiral groove along the other end of the spiral groove on the rotating guide sleeve. The airflow is ejected from one end of the spiral groove while driving the rotating guide sleeve to rotate. On the one hand, the airflow in the spiral groove cools the combination drill bit by wrapping around the extrusion and shaping area, thereby reducing the drilling heat generated in the drilling area and the friction heat generated in the friction area, thereby preventing the combination drill bit from failing and being damaged due to its own high temperature. On the other hand, the airflow ejected from one end of the spiral groove can not only blow the chips generated by drilling out of the rotating guide sleeve, but also cool the end of the combination drill bit. The rotating guide sleeve can wrap the entire circumference of the combination rotary head, thereby improving the heat dissipation effect. When the combination drill bit is pulled out from the suction hole after the suction hole is processed, the guide element extends toward the end of the combination drill bit under the elastic force of the spring, and then the step surface between the first step hole and the second step hole scrapes off the chips adhering to the extrusion and shaping area and the metal slag generated by friction, thereby ensuring the cleanliness of the extrusion and shaping area on the combination drill bit, and thus improving the processing accuracy of the suction hole on the exhaust duct.

[0012] Preferably, elastic metal brushes are evenly spaced along the circumferential direction in the second stepped hole of the rotating guide sleeve.

[0013] When the combination drill bit is pulled out from the suction hole after the suction hole is processed, the guide element extends toward the end of the combination drill bit under the elastic force of the spring. During the process, the guide sleeve rotates, driving the elastic metal brush to rotate, thereby sweeping away the chips adhering to the drilling area and friction area of ​​the combination drill bit, thereby preventing the chips from adhering and causing the accuracy of the water suction hole to be reduced in subsequent processing, thereby improving the drilling accuracy of the suction hole on the exhaust duct.

[0014] Preferably, the transferring component includes a transferring base plate, a transferring motor, a second lead screw pair, a second linear guide, a rotating support seat and a transferring support plate; the transferring base plate is fixedly connected to the workbench; the transferring base plate is fixedly connected to the second linear guide along the length direction; the transferring support plate is slidably connected through the second linear guide; the transferring support plate is moved in position by the second lead screw pair below; both ends of the second lead screw pair are rotatably connected to the transferring base plate through the rotating support seat; the end of the second lead screw pair is fixedly connected to the rotating shaft of the transferring motor; the transferring motor is fixedly connected to the transferring base plate.

[0015] During operation, the controller controls the transfer motor through electrical signals, and then drives the transfer support plate to move its position through the second screw pair, thereby driving the positioning and clamping components set on the transfer support plate, and then moving the position of the exhaust duct clamped on the positioning and clamping components. The high-precision servo drive motor and the high-precision screw and nut pair can not only meet the position movement of the positioning and clamping components between the loading and unloading positions, but also cooperate with the automatic drilling components to realize the processing of a row of air intake holes, that is, the spacing of the air intake holes on the exhaust duct is controlled by the movement of the transfer component, thereby improving the drilling efficiency and processing quality.

[0016] Preferably, the positioning and clamping components include a V-shaped block, an axial positioning plate, an axial clamping unit and a circumferential clamping unit; V-shaped blocks are symmetrically arranged at both ends of the transfer support plate; the V-shaped blocks are fixedly connected to the transfer support plate; the circumferential clamping unit for clamping the exhaust duct in the circumferential direction is arranged above the V-shaped block; the circumferential clamping unit is connected to the V-shaped block; one end of the transfer support plate is fixedly connected to the axial positioning plate; the other end of the transfer support plate is provided with the axial clamping unit for clamping the exhaust duct in the axial direction.

[0017] During operation, after the automatic unloading component releases an exhaust duct onto the V-block, the controller uses electrical signals to control the axial clamping cylinder in the axial clamping unit to contract, thereby driving the axial extrusion plate to push the exhaust duct toward the axial positioning plate. After axial clamping, the controller uses electrical signals to control the circumferential clamping cylinder in the circumferential clamping unit to drive the rubber extrusion block to clamp the exhaust duct, thereby ensuring that it does not shift during drilling by the automatic drilling component, thereby ensuring drilling accuracy. After the automatic drilling component completes drilling, the transfer component moves the positioning clamping component to the unloading position. The controller controls the axial and circumferential clamping units to release the clamps, thereby facilitating the removal of the processed exhaust duct by the loading and unloading components. The positioning clamping method in this case allows the automatic unloading component to directly release the exhaust duct onto the V-block, and the positioning clamping component can achieve automatic positioning and clamping. After processing is completed, it automatically releases the clamping, facilitating the removal of the exhaust duct by the loading and unloading components. This improves the automation level of exhaust duct processing, thereby enhancing processing efficiency and quality.

[0018] Preferably, the automatic material discharge component includes a mounting frame, a limiting groove, a connecting rod, a one-by-one release unit and an arc slide; the mounting frame is fixedly connected to the workbench; the limiting groove is symmetrically arranged on the mounting frame; the two limiting grooves are fixedly connected by a plurality of connecting rods; the lower end of the limiting groove is fixedly connected to the mounting frame; the upper end of the limiting groove is connected to the inclined material bucket; the notch at the lower end of the limiting groove corresponds to the through groove on the mounting frame, and the notch at the lower end of the limiting groove is tangent to the arc slide fixedly connected to the bottom of the mounting frame; the lower end of the arc slide overlaps the edge of the V-shaped notch of the V-shaped block; the one-by-one release units are symmetrically arranged on the two limiting grooves; the one-by-one release units are used to control the exhaust ducts in the limiting groove to release one by one.

[0019] During operation, the two ends of the exhaust duct are placed along the limit groove, and then intercepted and controlled by the release units arranged at the lower end of the limit groove, so as to release the exhaust ducts temporarily stored in the limit groove one by one, and the released exhaust ducts slide to the V-shaped block through the arc-shaped slide plate connected below, thereby realizing the function of automatic discharge, thereby improving the degree of automation and improving the processing effect.

[0020] Preferably, the one-by-one release units include a first limiting cylinder, a first limiting column, a second limiting cylinder and a second limiting column; the first limiting column and the second limiting column are vertically arranged in sequence on the limiting slot; the first limiting column and the second limiting column both pass through the limiting slot and extend into the slot; the first limiting column is fixedly connected to the telescopic rod of the first limiting cylinder through a first connecting plate; the cylinder body of the first limiting cylinder is fixedly connected to the side wall of the limiting slot; the second limiting column is fixedly connected to the telescopic rod of the second limiting cylinder through a second connecting plate; the cylinder body of the second limiting cylinder is fixedly connected to the side wall of the limiting slot; the first limiting column limits the exhaust duct close to the bottom in the limiting slot from falling; the second limiting column limits the exhaust duct at the bottom in the limiting slot from falling.

[0021] When the second limiting cylinder is extended by the controller through an electrical signal, the exhaust duct at the bottom of the limiting groove is restricted from falling, and the controller controls the second limiting cylinder to retract through the electrical signal, so that the exhaust duct at the bottom of the limiting groove can automatically fall onto the arc slide and then enter the V-shaped block; after the exhaust duct at the bottom falls, the controller controls the second limiting cylinder to retract, so that the second limiting cylinder is inserted into the notch of the limiting groove again, and then the controller controls the first limiting cylinder to pull the first limiting cylinder out of the limiting groove through an electrical signal, so that the upper exhaust duct falls down and is intercepted on the second limiting cylinder, and then the controller controls the first limiting cylinder again to drive the first limiting cylinder to reinsert the notch of the limiting groove, and the first limiting cylinder is inserted into the circular hole of the second exhaust duct from the bottom, so as to ensure that the upper exhaust duct is intercepted when the first exhaust duct falls and is released, so as to achieve only one exhaust duct being released at a time, thereby realizing automatic material discharge and improving processing efficiency.

[0022] Preferably, the loading and unloading components include a robot and a pneumatic gripper at the end of the robot.

[0023] When working, the robot can not only control the pneumatic clamp to automatically stack the exhaust ducts to be processed onto the automatic feeding component, but also remove the processed exhaust ducts from the positioning and clamping components, thereby realizing full-process automated processing. It not only saves labor costs, but also enables long-term uninterrupted work, thereby improving processing efficiency.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. In the present invention, the controller controls the automatic feeding component through electric signals to automatically release the temporarily stored exhaust pipes one by one onto the positioning and clamping component. The controller controls the positioning and clamping component through electric signals to position and clamp the exhaust pipe. The controller controls the automatic drilling component through electric signals to process a row of air intake holes on the exhaust pipe after positioning and clamping. During the process, it is necessary to cooperate with the transfer component to move a hole position, thereby realizing the drilling of a row of air intake holes. After all the air intake holes in the exhaust pipe are processed, the controller controls the transfer component through electric signals to move the positioning and clamping component and the processed exhaust pipe to the other end. Then the controller controls the positioning clamping component to release the clamping, and the controller controls the loading and unloading component through electrical signals to remove the exhaust duct processed on the positioning clamping component. Then the controller controls the transferring component to move the positioning clamping component to the other end. Then the controller controls the automatic unloading component to automatically release one of the temporarily stored exhaust pipes onto the positioning clamping component, and then repeats the above steps to realize automatic processing of the exhaust duct. Moreover, the controller realizes automatic drilling of a row of air intake holes on the exhaust duct by alternately controlling the automatic drilling component and the transferring component, thereby improving work efficiency and processing accuracy.

[0026] 2. The controller of the present invention controls the drilling motor to rotate at a drilling speed through an electrical signal, and the drilling motor drives multiple sets of combined drill bits to rotate synchronously through a coupling and a synchronous gear set. Then, the controller controls the feed motor to rotate at a feed speed through an electrical signal, and then drives the combined drill bit on the sliding support frame to continuously approach the exhaust duct through the first screw pair, and then completes the bottom hole drilling on the exhaust duct through the drilling area on the combined drill bit. Then, the controller controls the drilling motor to rotate at a higher speed, and at the same time controls the feed motor to rotate at a slower speed, so as to The friction zone on the combined drill bit is used to rub the bottom hole drilled on the exhaust duct until it turns red with a very small feed rate. Then the controller controls the feed motor to rotate at the feed speed, and then the curling edge around the bottom hole that has turned red with friction is squeezed to the surrounding areas through the extrusion shaping area on the combined drill bit, thereby forming a step resistance structure on the inner side of the bottom hole of the suction hole, thereby preventing oil stains from dripping from the suction hole, and then the drilling and extrusion curling are achieved in one step through the combined drill bit and the control of the drilling speed and feed speed, thereby improving work efficiency and the quality of the curling edge.

[0027] 3. In the present invention, the high-pressure airflow from the external positive-pressure air source enters the annular groove from the air inlet on the fixed sleeve, and then enters the spiral groove along the other end of the spiral groove on the rotating guide sleeve. The airflow is ejected from one end of the spiral groove while driving the rotating guide sleeve to rotate. On the one hand, the airflow in the spiral groove cools the combination drill bit by wrapping the extrusion shaping area of ​​the combination drill bit, thereby reducing the drilling heat generated in the drilling area and the friction heat generated in the friction area, thereby preventing the combination drill bit from failing and being damaged due to its own high temperature. On the other hand, the airflow ejected from one end of the spiral groove can not only blow the chips generated by drilling out of the rotating guide sleeve, but also cool the end of the combination drill bit. The rotating guide sleeve can wrap the entire circumference of the combination rotary head, thereby improving the heat dissipation effect. When the combination drill bit is pulled out from the suction hole after the suction hole is processed, the guide element extends toward the end of the combination drill bit under the elastic force of the spring, and then the step surface between the first step hole and the second step hole scrapes off the chips adhering to the extrusion and shaping area and the metal slag generated by friction, thereby ensuring the cleanliness of the extrusion and shaping area on the combination drill bit, and thus improving the processing accuracy of the suction hole on the exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the overall structure of the exhaust duct drilling device of the present invention in the blanking state;

[0030] Figure 2 This is a schematic diagram of the overall structure of the exhaust duct drilling device of the present invention in the loading state;

[0031] Figure 3 This is a schematic structural diagram of the automatic feeding component of the present invention at a first viewing angle;

[0032] Figure 4 It is a structural schematic diagram of the automatic feeding component of the present invention at a second viewing angle;

[0033] Figure 5 It is a structural schematic diagram of the automatic drilling component of the present invention;

[0034] Figure 6 It is a schematic diagram of the internal structure of the automatic drilling component of the present invention;

[0035] Figure 7 It is a schematic diagram of the internal structure of the guide element in the present invention;

[0036] Figure 8 This is a schematic diagram of the connection between the spring and the guide sleeve in the present invention;

[0037] Figure 9 It is a schematic structural diagram of the elastic metal brush of the present invention;

[0038] Figure 10 It is a structural schematic diagram of the annular groove in the present invention;

[0039] Figure 11 It is a schematic diagram of the internal structure of the automatic feeding component of the present invention;

[0040] Figure 12 This is a schematic diagram of the principle of the automatic feeding component of the present invention;

[0041] In the figure: workbench 1, positioning clamping component 2, V-block 21, axial positioning plate 22, axial clamping unit 23, circumferential clamping unit 24, transfer component 3, transfer base plate 31, transfer motor 32, second screw pair 33, second linear guide 34, rotation support seat 35, transfer support plate 36, automatic unloading component 4, mounting frame 41, limiting groove 42, connecting rod 43, releasing unit one by one 44, first limiting cylinder 441, first limiting column 442, second limiting cylinder 443, second limiting column 444, arc Slide plate 45, automatic drilling component 5, drilling mounting plate 51, feed motor 52, first screw pair 53, first linear guide rail 54, sliding support frame 55, drilling motor 56, drill bit holder 57, combination drill bit 58, guide unit 59, guide extrusion plate 591, guide column 593, spring 594, guide sleeve 595, fixed sleeve 596, annular groove 5961, bearing 597, rotating guide sleeve 598, spiral groove 5981, elastic metal brush 599, loading and unloading components 6, robot 61, pneumatic clamp 62. DETAILED DESCRIPTION

[0042] 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.

[0043] like Figures 1 to 4 As shown, a drilling device for exhaust duct processing includes a workbench 1, a positioning and clamping component 2, a transferring component 3, an automatic feeding component 4, an automatic drilling component 5 and a loading and unloading component 6; the transferring component 3 for carrying the positioning and clamping component 2 to move is arranged on the workbench 1 along the length direction; the positioning and clamping component 2 for positioning and clamping the exhaust duct is arranged on the transferring component 3; the automatic feeding component 4 for automatically releasing the temporarily stored exhaust duct onto the positioning and clamping component 2 is arranged on one side of the positioning and clamping component 2; the automatic drilling component 5 for processing suction holes on the exhaust duct is arranged on the other side of the positioning and clamping component 2; the loading and unloading component 6 for stacking exhaust pipes on the automatic feeding component 4 and removing the processed exhaust pipes from the positioning and clamping component 2 is arranged on one side of the positioning and clamping component 2.

[0044] During operation, the controller controls the automatic feeding component 4 through electric signals to automatically release the temporarily stored exhaust pipes one by one onto the positioning and clamping component 2. The controller controls the positioning and clamping component 2 through electric signals to position and clamp the exhaust pipe. The controller controls the automatic drilling component 5 through electric signals to process a row of air intake holes on the exhaust pipe after positioning and clamping. During the process, it is necessary to cooperate with the transfer component 3 to move a hole position, thereby realizing the drilling of a row of air intake holes. After all the air intake holes on the exhaust pipe are processed, the controller controls the transfer component 3 through electric signals to move the positioning and clamping component 2 and the processed exhaust pipe to the other end. The rear controller controls the positioning clamping component 2 to release the clamping, and the controller controls the loading and unloading component 6 through an electrical signal to remove the exhaust duct processed on the positioning clamping component. Then the controller controls the transferring component 3 to move the positioning clamping component 2 to the other end. Then the controller controls the automatic discharge component 4 to automatically release one of the temporarily stored exhaust pipes onto the positioning clamping component 2, and then repeats the above steps to realize automatic processing of the exhaust duct. Moreover, the controller realizes automatic drilling of a row of intake holes on the exhaust duct by alternately controlling the automatic drilling component 5 and the transferring component 3, thereby improving work efficiency and processing accuracy.

[0045] like Figures 3 to 8As shown, the automatic drilling component 5 includes a drilling mounting plate 51, a feed motor 52, a first screw pair 53, a first linear guide 54, a sliding support frame 55, a drilling motor 56, a drill bit holder 57 and a combined drill bit 58; the drilling mounting plate 51 is fixedly connected to the workbench 1 through a pad; the sliding support frame 55 is slidably connected to the drilling mounting plate 51 through the first linear guide 54, and the sliding support frame 55 is driven to move by the first screw pair 53; the two ends of the first screw pair 53 are connected by a rotating support, and the first One end of the screw pair 53 is connected to the rotating shaft of the feed motor 52 through a coupling; the feed motor 52 is fixedly connected to the drilling mounting plate 51; one end of the sliding support frame 55 is fixedly connected to the drilling motor 56; the rotating shaft of the drilling motor 56 is connected to the coupling, the synchronous gear set, the drill bit holder 57 and the combined drill bit 58 in sequence, and the drilling motor 56 drives multiple groups of the drill bit holders 57 and the combined drill bit 58 to rotate synchronously through the coupling and the synchronous gear set; the combined drill bit 58 is provided with a drilling area, a friction area and an extrusion shaping area in sequence.

[0046] During operation, the controller controls the drilling motor 56 to rotate at the drilling speed through an electrical signal, and the drilling motor 56 drives the multiple sets of combined drill bits 58 to rotate synchronously through the coupling and the synchronous gear set. Then, the controller controls the feed motor 52 to rotate at the feed speed through an electrical signal, and then drives the combined drill bit 58 on the sliding support frame 55 to continuously approach the exhaust duct through the first screw pair 53, and then completes the bottom hole drilling on the exhaust duct through the drilling area on the combined drill bit 58. Then, the controller controls the drilling motor 56 to rotate at a higher speed, and at the same time controls the feed motor 52 to rotate at a slower speed. The bottom hole drilled on the exhaust duct is rubbed red by the friction zone on the combined drill bit 58 with a very small feed amount, and then the controller controls the feed motor 52 to rotate at the feed speed, and then the curling edge around the bottom hole that has been rubbed red by the extrusion shaping area on the combined drill bit 58 is squeezed to the surrounding areas, and then a step barrier structure is formed on the inner side of the bottom hole of the air intake hole, which can prevent oil stains from dripping from the air intake hole, and then the drilling and extrusion curling are formed in one step through the combined drill bit 58 and the control of the drilling speed and the feed speed, thereby improving the work efficiency and the quality of the curling.

[0047] like Figures 5 to 8As shown, the automatic drilling component 5 also includes a guide unit 59; the guide unit 59 includes a guide extrusion plate 591, a guide element, a guide column 593, a spring 594 and a guide sleeve 595; a plurality of the guide elements are arranged on the guide extrusion plate 591; the guide element is sleeved on the combination drill bit 58; a plurality of the guide columns 593 are fixedly connected to the guide extrusion plate 591; the free end of the guide column 593 is inserted into the guide sleeve 595, and the end of the guide column 593 is in contact with the bottom of the inner hole of the guide sleeve 595 through the spring 594; the guide sleeve 595 is fixedly connected to the sliding support frame 55.

[0048] By providing a guide unit 59 on the extended combination drill bit 58, the combination drill bit 58 is guided, thereby improving the stability and processing accuracy of drilling. By directly providing the guide unit 59 on the automatic drilling component 5, the number of guide units 59 provided can be reduced. If the guide unit 59 is provided on the positioning clamping component 2, a guide unit 59 needs to be provided for each air intake hole, thereby reducing the complexity of the device. Moreover, when the combination drill bit 58 has processed a group of air intake holes and retreats, it is only necessary to pull the combination drill bit 58 out of the air intake hole to move the exhaust duct via the transfer component 3, without having to pull the combination drill bit 58 out of the guide unit 59 to move it laterally. This shortens the retreat stroke and improves the processing efficiency of automatic drilling. In addition, a spring 594 is used to resist between the guide column 593 and the guide sleeve 595. The elasticity of the spring 594 ensures that the guide element can always remain close to the exhaust duct for guidance during the entire processing process of the combination drill bit 58, thereby improving the stability and accuracy of the guidance.

[0049] like Figure 6 、 Figure 7 and Figure 10 As shown, the guide element includes a fixed sleeve 596, a bearing 597 and a rotating guide sleeve 598; one end of the fixed sleeve 596 is fixedly connected to the guide extrusion plate 591; the rotating guide sleeve 598 is rotatably connected to the fixed sleeve 596 through the bearing 597; a first step hole and a second step hole are provided in the rotating guide sleeve 598; the aperture of the first step hole is larger than the aperture of the second step hole; the second step hole is sleeved on the combination drill bit 58; a spiral groove 5981 is provided on the inner wall of the second step hole; one end of the spiral groove 5981 extends to the step surface between the first step hole and the second step hole; the other end of the spiral groove 5981 is connected to the annular groove 5961 on the inner wall of the fixed sleeve 596 along the tangential direction; an air inlet connected to the annular groove 5961 is provided on the fixed sleeve 596; the air inlet is connected to an external positive pressure air source.

[0050] During operation, high-pressure air from an external positive-pressure air source enters the annular groove 5961 through the air inlet on the fixed sleeve 596, and then enters the spiral groove 5981 along the other end of the spiral groove 5981 on the rotating guide sleeve 598. The airflow is ejected from one end of the spiral groove 5981 while driving the rotating guide sleeve 598 to rotate. On the one hand, the airflow in the spiral groove 5981 cools the combination drill bit 58 by wrapping around the extrusion shaping area of ​​the combination drill bit 58, thereby reducing the drilling heat generated in the drilling area and the friction heat generated in the friction area, thereby preventing the combination drill bit 58 from failing or being damaged due to excessive temperature. On the other hand, the airflow ejected from one end of the spiral groove 5981 not only blows the chips generated by drilling out of the rotating guide sleeve 598, but also cools the end of the combination drill bit 58. The rotating rotating guide sleeve 598 can wrap around the entire circumference of the combination rotary head, thereby improving the heat dissipation effect. During the process of pulling the combination drill bit 58 out of the suction hole after the suction hole is processed, the guide element extends toward the end of the combination drill bit 58 under the elastic force of the spring 594, and then the step surface between the first step hole and the second step hole scrapes off the chips adhering to the extrusion shaping area and the metal slag generated by friction, thereby ensuring the cleanliness of the extrusion shaping area on the combination drill bit 58 and improving the processing accuracy of the suction hole on the exhaust duct.

[0051] like Figure 9 As shown, elastic metal brushes 599 are evenly spaced along the circumferential direction in the second stepped hole on the rotating guide sleeve 598 .

[0052] During the process of pulling out the combination drill bit 58 from the suction hole after the suction hole is processed, the guide element extends toward the end of the combination drill bit 58 under the elastic force of the spring 594. During the process, the guide sleeve 598 rotates, driving the elastic metal brush 599 to rotate, thereby sweeping away the chips adhering to the drilling area and friction area of ​​the combination drill bit 58, thereby preventing the chips from adhering and causing the accuracy of the water suction hole to be reduced in subsequent processing, thereby improving the drilling accuracy of the suction hole on the exhaust duct.

[0053] like Figures 1 to 4 As shown, the transferring component 3 includes a transferring base plate 31, a transferring motor 32, a second screw pair 33, a second linear guide 34, a rotating support seat 35 and a transferring support plate 36; the transferring base plate 31 is fixedly connected to the workbench 1; the second linear guide 34 is fixedly connected to the transferring base plate 31 along the length direction; the transferring support plate 36 is slidably connected through the second linear guide 34; the transferring support plate 36 is moved by the second screw pair 33 below; the two ends of the second screw pair 33 are rotatably connected to the transferring base plate 31 through the rotating support seat 35; the end of the second screw pair 33 is fixedly connected to the rotating shaft of the transferring motor 32; the transferring motor 32 is fixedly connected to the transferring base plate 31.

[0054] During operation, the controller controls the transfer motor 32 through an electrical signal, and then drives the transfer support plate 36 to move its position through the second screw pair 33, thereby driving the positioning and clamping component 2 set on the transfer support plate 36, and then moving the position of the exhaust duct clamped on the positioning and clamping component 2. The high-precision servo drive motor and the high-precision screw and nut pair can not only meet the position movement of the positioning and clamping component 2 between the loading position and the unloading position, but also cooperate with the automatic drilling component 5 to realize the processing of a row of air intake holes, that is, the spacing of the air intake holes on the exhaust duct is controlled by the movement of the transfer component 3, thereby improving the drilling efficiency and processing quality.

[0055] like Figures 3 and 4 As shown, the positioning and clamping component 2 includes a V-block 21, an axial positioning plate 22, an axial clamping unit 23 and a circumferential clamping unit 24; V-blocks 21 are symmetrically arranged at both ends of the transfer support plate 36; the V-block 21 is fixedly connected to the transfer support plate 36; the circumferential clamping unit 24 for clamping the exhaust duct in the circumferential direction is arranged above the V-block 21; the circumferential clamping unit 24 is connected to the V-block 21; one end of the transfer support plate 36 is fixedly connected to the axial positioning plate 22; the other end of the transfer support plate 36 is provided with the axial clamping unit 23 for clamping the exhaust duct in the axial direction.

[0056] During operation, after the automatic discharge component 4 releases an exhaust duct V-block 21, the controller controls the axial clamping cylinder in the axial clamping unit 23 through an electrical signal to contract, thereby driving the axial extrusion plate to push the exhaust duct toward the axial positioning plate 22. After axial clamping, the controller controls the circumferential clamping cylinder in the circumferential clamping unit 24 through an electrical signal to drive the rubber extrusion block to clamp the exhaust duct, thereby ensuring that no displacement occurs when the automatic drilling component 5 is drilling, thereby ensuring drilling accuracy. After the automatic drilling component 5 finishes drilling, the transfer component 3 moves the positioning clamping component 2 to the unloading position, and the controller controls the axial clamping unit 23 and the circumferential clamping unit 24 to release the clamping, thereby facilitating the loading and unloading component 6 to remove the processed exhaust duct. Through the positioning and clamping method in this case, the automatic discharge component 4 can directly release the exhaust duct onto the V-block 21, and the positioning and clamping component 2 can realize automatic positioning and clamping, and can automatically release the clamping after the processing is completed, thereby facilitating the loading and unloading component 6 to remove the exhaust duct, thereby improving the degree of automation of the exhaust duct processing, and thus improving the processing efficiency and processing quality.

[0057] like Figures 3 and 4As shown, the automatic material discharge component 4 includes a mounting frame 41, a limiting groove 42, a connecting rod 43, a one-by-one release unit 44 and an arc slide 45; the mounting frame 41 is fixedly connected to the workbench 1; the limiting grooves 42 are symmetrically arranged on the mounting frame 41; the two limiting grooves 42 are fixedly connected by multiple connecting rods 43; the lower end of the limiting groove 42 is fixedly connected to the mounting frame 41; the upper end of the limiting groove 42 is connected to the inclined material bucket; the notch at the lower end of the limiting groove 42 corresponds to the through groove on the mounting frame 41, and the notch at the lower end of the limiting groove 42 is tangent to the arc slide 45 fixedly connected to the bottom of the mounting frame 41; the lower end of the arc slide 45 overlaps the edge of the V-shaped notch of the V-shaped block 21; the one-by-one release units 44 are symmetrically arranged on the two limiting grooves 42; the one-by-one release units 44 are used to control the exhaust ducts in the limiting grooves 42 to release one by one.

[0058] During operation, both ends of the exhaust duct are placed along the limit groove 42, and then intercepted and controlled by the release units 44 set at the lower end of the limit groove 42, so as to release the exhaust ducts temporarily stored in the limit groove 42 one by one, and the released exhaust ducts slide onto the V-block 21 through the arc-shaped slide plate 45 connected below, thereby realizing the function of automatic discharge, thereby improving the degree of automation and improving the processing effect.

[0059] like Figures 11 to 12 As shown, the release unit 44 includes a first limiting cylinder 441, a first limiting column 442, a second limiting cylinder 443 and a second limiting column 444; the first limiting column 442 and the second limiting column 444 are vertically arranged on the limiting groove 42; the first limiting column 442 and the second limiting column 444 both pass through the limiting groove 42 and extend into the groove; the first limiting column 442 is fixedly connected to the telescopic rod of the first limiting cylinder 441 through a first connecting plate; the The cylinder body of the first limiting cylinder 441 is fixedly connected to the side wall of the limiting groove 42; the second limiting column 444 is fixedly connected to the telescopic rod of the second limiting cylinder 443 through a second connecting plate; the cylinder body of the second limiting cylinder 443 is fixedly connected to the side wall of the limiting groove 42; the first limiting column 442 limits the exhaust duct close to the bottom in the limiting groove 42 from falling; the second limiting column 444 limits the exhaust duct at the bottom in the limiting groove 42 from falling.

[0060] During operation, the second limiting post 444 limits the exhaust duct at the bottom of the limiting groove 42 from falling by supporting the outer cylindrical surface thereof, and then when the controller controls the second limiting cylinder 443 to extend through an electrical signal, the exhaust duct at the bottom of the limiting groove 42 can automatically fall onto the arc slide 45 and then enter the V-shaped block 21; after the exhaust duct at the bottom falls, the controller controls the second limiting cylinder 443 to contract, thereby realizing the second limiting post 444 being inserted into the notch of the limiting groove 42 again, and then the controller controls the first limiting cylinder 443 through an electrical signal. The cylinder 441 pulls the first limiting column 442 out of the limiting groove 42, causing the upper exhaust pipe to fall downward to be intercepted on the second limiting column 444, and then the controller controls the first limiting cylinder 441 again to drive the first limiting column 442 to be reinserted into the notch of the limiting groove 42, and the first limiting column 442 is inserted into the circular hole of the second exhaust duct from the bottom, thereby ensuring that the upper exhaust pipes are intercepted when the first exhaust pipe falls and is released, thereby achieving only one exhaust duct at a time, thereby realizing automatic material discharge and improving processing efficiency.

[0061] like Figures 1 to 2 As shown, the loading and unloading component 6 includes a robot 61 and a pneumatic clamp 62 at the end of the robot 61.

[0062] When working, the robot 61 can not only control the pneumatic clamp 62 to automatically stack the exhaust duct to be processed on the automatic discharge component 4, but also remove the exhaust duct that has been processed on the positioning clamping component 2, thereby realizing full-process automated processing, which not only saves labor costs, but also enables long-term uninterrupted work, thereby improving processing efficiency.

[0063] 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 exhaust duct processing, characterized in that: It includes a workbench, a positioning and clamping component, a transfer component, an automatic unloading component, an automatic drilling component, and a loading and unloading component; a transfer component for carrying the positioning and clamping component to move is provided on the workbench along the length direction; a positioning and clamping component for positioning and clamping the exhaust duct is provided on the transfer component; an automatic unloading component for automatically releasing the temporarily stored exhaust duct onto the positioning and clamping component is provided on one side of the positioning and clamping component, and an automatic drilling component for processing the suction hole on the exhaust duct is provided on the other side; a loading and unloading component for stacking the exhaust duct onto the automatic unloading component and removing the processed exhaust duct from the positioning and clamping component is provided on one side of the positioning and clamping component; The automatic drilling component includes a drilling mounting plate fixedly connected to the workbench through a pad, a feed motor, a first screw pair, a first linear guide rail, a sliding support frame, a drilling motor, a drill bit holder, and a combined drill bit; The drilling mounting plate is slidably connected to the sliding support frame through a first linear guide rail, and the first screw pair drives the sliding support frame to move; the two ends of the first screw pair are connected by a rotating support, and one end of the first screw pair is connected to the rotating shaft of the feed motor through a coupling; the feed motor is fixed to the drilling mounting plate; one end of the sliding support frame is fixedly connected to the drilling motor; the rotating shaft of the drilling motor is sequentially connected to the coupling, the synchronous gear set, the drill bit holder, and the combined drill bit, and the drilling motor drives the multiple sets of drill bit holders and the combined drill bit to rotate synchronously through the coupling and the synchronous gear set; the combined drill bit is sequentially provided with a drilling area, a friction area, and an extrusion shaping area; During operation, the controller controls the rotation of the drilling motor, and the drilling motor drives multiple groups of combined drill bits to rotate synchronously. Then the controller controls the rotation of the feed motor, and then the first screw pair drives the combined drill bit to approach the exhaust duct, and drills the bottom hole on the exhaust duct through the drilling area. Then the controller controls the drilling motor to rotate at a higher speed, and controls the feed motor to rotate at a slower speed, so that the friction area rubs the bottom hole red with a very small feed amount. Then the controller controls the feed motor to rotate at the feed speed, and squeezes the red curling edge around the bottom hole through the extrusion shaping area to the surrounding areas, and forms a step resistance structure on the inner side of the bottom hole of the suction hole. Then, the drilling and extrusion curling are achieved in one step by controlling the combined drill bit and the drilling speed and feed speed.

2. The exhaust duct drilling device according to claim 1, characterized in that: The automatic drilling component also includes a guide unit; the guide unit includes a guide extrusion plate, a guide element, a guide column, a spring and a guide sleeve; a plurality of the guide elements are arranged on the guide extrusion plate; the guide element is sleeved on the combination drill bit; a plurality of the guide columns are fixedly connected to the guide extrusion plate; the free end of the guide column is inserted into the guide sleeve, and the end of the guide column is in contact with the bottom of the inner hole of the guide sleeve through the spring; the guide sleeve is fixedly connected to the sliding support frame.

3. The exhaust duct drilling device according to claim 2, characterized in that: The guide element includes a fixed sleeve, a bearing and a rotating guide sleeve; one end of the fixed sleeve is fixedly connected to the guide extrusion plate; the rotating guide sleeve is rotatably connected inside the fixed sleeve through the bearing; a first step hole and a second step hole are provided in the rotating guide sleeve; the aperture of the first step hole is larger than the aperture of the second step hole; the second step hole is sleeved on the combination drill bit; a spiral groove is provided on the inner wall of the second step hole; one end of the spiral groove extends to the step surface between the first step hole and the second step hole; the other end of the spiral groove is connected to the annular groove on the inner wall of the fixed sleeve along the tangential direction; an air inlet connected to the annular groove is provided on the fixed sleeve; the air inlet is connected to an external positive pressure air source.

4. The exhaust duct drilling device according to claim 3, characterized in that: Elastic metal brushes are evenly spaced in the second stepped hole of the rotating guide sleeve along the circumferential direction.

5. The exhaust duct drilling device according to claim 1, characterized in that: The transferring component includes a transferring base plate, a transferring motor, a second lead screw pair, a second linear guide rail, a rotating support seat and a transferring support plate; the transferring base plate is fixedly connected to the workbench; the second linear guide rail is fixedly connected to the transferring base plate along the length direction; the transferring support plate is slidably connected through the second linear guide rail; the transferring support plate is moved in position by the second lead screw pair below; both ends of the second lead screw pair are rotatably connected to the transferring base plate through the rotating support seat; the end of the second lead screw pair is fixedly connected to the rotating shaft of the transferring motor; the transferring motor is fixedly connected to the transferring base plate.

6. The exhaust duct drilling device according to claim 5, characterized in that: The positioning and clamping components include a V-shaped block, an axial positioning plate, an axial clamping unit and a circumferential clamping unit; V-shaped blocks are symmetrically arranged at both ends of the transfer support plate; the V-shaped blocks are fixedly connected to the transfer support plate; the circumferential clamping unit for clamping the exhaust duct in the circumferential direction is arranged above the V-shaped block; the circumferential clamping unit is connected to the V-shaped block; one end of the transfer support plate is fixedly connected to the axial positioning plate; the other end of the transfer support plate is provided with the axial clamping unit for clamping the exhaust duct in the axial direction.

7. The exhaust duct drilling device according to claim 6, characterized in that: The automatic material discharge component includes a mounting frame, a limit slot, a connecting rod, a one-by-one release unit and an arc-shaped slide; the mounting frame is fixedly connected to the workbench; the limit slots are symmetrically arranged on the mounting frame; the two limit slots are fixedly connected by a plurality of connecting rods; the lower end of the limit slot is fixedly connected to the mounting frame; the upper end of the limit slot is connected to the inclined material bucket; the notch at the lower end of the limit slot corresponds to the through slot on the mounting frame, and the notch at the lower end of the limit slot is tangent to the arc-shaped slide fixedly connected to the bottom of the mounting frame; the lower end of the arc-shaped slide overlaps the edge of the V-shaped notch of the V-shaped block; the one-by-one release units are symmetrically arranged on the two limit slots; the one-by-one release units are used to control the exhaust ducts in the limit slots to release one by one.

8. The exhaust duct drilling device according to claim 7, characterized in that: The one-by-one release units include a first limiting cylinder, a first limiting column, a second limiting cylinder and a second limiting column; the first limiting column and the second limiting column are vertically arranged in sequence on the limiting slot; the first limiting column and the second limiting column both penetrate the limiting slot and extend into the slot; the first limiting column is fixedly connected to the telescopic rod of the first limiting cylinder through a first connecting plate; the cylinder body of the first limiting cylinder is fixedly connected to the side wall of the limiting slot; the second limiting column is fixedly connected to the telescopic rod of the second limiting cylinder through a second connecting plate; the cylinder body of the second limiting cylinder is fixedly connected to the side wall of the limiting slot; the first limiting column limits the exhaust duct close to the bottom in the limiting slot from falling; the second limiting column limits the exhaust duct at the bottom in the limiting slot from falling.

9. The exhaust duct drilling device according to claim 8, characterized in that: The loading and unloading components include a robot and a pneumatic clamp at the end of the robot.

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