A drilling and tapping machine

Abstract

The present invention relates to the technical field of drilling and tapping of parts, and discloses a drilling and tapping machine, comprising a positioning mechanism, a drilling and tapping mechanism and a grinding mechanism, wherein the positioning mechanism comprises a slide and a positioning platform slidably connected to the slide, and a positioning assembly is provided on the positioning platform; the drilling and tapping mechanism comprises a punching drill, a chamfering drill, a tap and a pressing platform, and a power component is provided on the pressing platform, and the punching drill, chamfering drill and tap are all connected to the power component; the grinding mechanism comprises a grinding part and a plurality of grinding sheets, and the plurality of grinding sheets can be spliced ​​into a hollow cylinder, and the plurality of grinding sheets can be expanded or retracted along the grinding part; a V-shaped groove is provided on one side of the grinding sheet, and a water storage chamber is provided inside the grinding sheet, and the water storage chamber is connected to the V-shaped groove, so as to solve the problem that it is difficult to grind and remove burrs generated on the inner surface of the transmission shaft after the drilling and tapping is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of parts drilling and tapping, in particular to a drilling and tapping machine. Background Art

[0002] A drilling and tapping machine is a machine tool that combines the functions of a drilling machine and a tapping machine. Fully automated by CNC equipment, it performs a series of machining operations, including feeding, drilling, tapping, and discharging, on the parts being processed, thereby creating threaded holes in the parts. Due to its high degree of automation, high processing efficiency, and high precision, it is widely used in the industrial field.

[0003] After drilling and tapping metal parts, burrs will appear at the connection between the formed threaded hole and the inner and outer surfaces of the metal parts. The presence of burrs will affect the normal use of the threaded hole and reduce the processing quality. The burrs on the outer surface can be eliminated by chamfering and grinding, but when the internal structure of the part is more complex, the burrs on the inner end are not easy to remove. For example, the metal part that connects the engine and the vehicle transmission system - the drive shaft, has internal gear teeth on both ends of the drive shaft. The internal gear teeth connected to the engine end are the driving gear teeth, and the internal gear teeth connected to the transmission system end are the driven gear teeth. The transmission is achieved through the driving gear teeth and the driven gear teeth. Due to the presence of internal gear teeth, it is difficult to grind and remove the burrs on the threaded hole on the inner surface of the drive shaft with a grinding disc after the threaded hole is drilled and tapped. Summary of the Invention

[0004] The present invention aims to provide a drilling and tapping machine to solve the problem that it is difficult to grind and remove burrs generated on the inner surface of a transmission shaft after drilling and tapping.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a drilling and tapping machine, including a positioning mechanism, a drilling and tapping mechanism and a grinding mechanism, the positioning mechanism including a slide and a positioning platform slidably connected to the slide, and the positioning platform is provided with a positioning assembly; the drilling and tapping mechanism includes a punching drill, a chamfering drill, a tap and a pressing platform, and the pressing platform is provided with a power part, and the punching drill, chamfering drill and tap are all connected to the power part; the grinding mechanism includes a grinding part and a number of grinding sheets, and the several grinding sheets can be spliced ​​into a hollow cylinder, and the several grinding sheets can be expanded or retracted along the grinding part; a V-shaped groove is provided on one side of the grinding sheet, and a water storage chamber is provided inside the grinding sheet, and the water storage chamber is connected to the V-shaped groove.

[0006] The beneficial effects of this solution are as follows: after the drilling and tapping process is completed, the grinding mechanism is used to grind the burrs on the outer periphery of the threaded hole on the inner wall of the rotating shaft; the grinding disc is set to be able to expand or retract along the grinding piece, and the retracted state is convenient for the grinding disc to enter or exit, so as to avoid scratching the inner gear teeth of the transmission shaft and affecting the transmission function of the transmission shaft. After the grinding disc enters smoothly, it is expanded to accurately remove the burrs on the gap section between the inner gear teeth of the transmission shaft, thereby solving the problem that the burrs on the inner surface of the transmission shaft are difficult to grind.

[0007] 1. A water shoveling portion and a water storage cavity are provided on the grinding disc. Considering that the accumulated water inside the intermittent section is difficult to pour out completely due to the obstruction of the driven gear teeth and the driving gear teeth, during the rotating grinding process, the end of the grinding disc where the V-shaped groove is in contact with the inner wall of the intermittent section can shovel the accumulated water and the small waste chips produced after grinding into the water storage cavity and temporarily store them, thereby removing the accumulated water inside the drive shaft, so as to facilitate the next step of drying the drive shaft and plating the anti-rust layer.

[0008] 2. Since the drill bit is usually cooled by spraying cooling water during drilling and tapping, after drilling and tapping the drive shaft, the accumulated water inside the intermittent section is difficult to pour out due to the obstruction of the driven gear teeth and the driving gear teeth. The grinding disc can just throw the water in the intermittent section out of the threaded hole during the rotation and grinding process, thereby helping to drain the accumulated water inside the shaft body, so as to facilitate the next step of drying the drive shaft and plating the anti-rust layer.

[0009] 3. The positioning mechanism positions and fixes the transmission shaft to be processed to prevent the transmission shaft from moving during the punching process, which would affect the punching quality.

[0010] 4. The chamfering drill is used for chamfering, the punching drill is used for drilling, and the tap is used to form threads on the inner wall of the hole. After setting the processing procedure of chamfering first, drilling, and finally tapping, burrs can be avoided at the connection between the threaded hole and the outer surface of the transmission shaft.

[0011] Preferably, the grinding part includes a fixed tube and a rotating rod, the power part is a grinding motor, the rotating rod is connected to the grinding motor, and the fixed tube is fixedly mounted on the rotating rod; the fixed tube is connected to a fixed disk, the rotating rod is connected to a rotating disk, and a number of sliding rods are slidably connected between the fixed disk and the rotating disk, and the number of sliding rods are connected to a number of grinding plates. When the rotating disk rotates relative to the fixed disk, the number of sliding rods can slide away to the surrounding areas with the center of the rotating disk as the center.

[0012] The beneficial effects of this solution are: 1. By setting the rotating disk to rotate relative to the fixed disk, a number of sliding rods are provided between the fixed disk and the rotating disk, which can slide around with the rotating rod as the center after rotation. The sliding rods are connected to the grinding sheets one by one, so that the grinding sheets can be expanded and folded through the sliding rods.

[0013] 2. When the grinding motor stops rotating, the rotating disk stops rotating immediately, and the sliding rods can return to the starting point of the center of the circle under the action of inertia, and the retraction is automatically completed.

[0014] 3. The V-shaped groove is away from the inner surface of the transmission shaft and can also block the accumulated water and small waste chips that are shoveled in, thereby preventing the small waste chips from entering between the rotating disk and the fixed disk, causing wear and obstruction to the contact surface of the rotating disk and the fixed disk. While ensuring the stability of the connection between the rotating disk and the fixed disk, it prevents small waste chips from blocking the relative rotation between the rotating disk and the fixed disk, thereby ensuring that the grinding disc can be smoothly unfolded and retracted.

[0015] Preferably, the positioning assembly includes a positioning plate, a positioning column and a pressing block, and the positioning plate is provided with a V-shaped groove.

[0016] The beneficial effects of this solution are: 1. The positioning plate, positioning column and pressing block are used to position and fix the transmission shaft, and the V-groove can adapt to transmission shafts of various models and sizes.

[0017] 2. The side walls on both sides of the V-groove are inclined planes. When the inclined planes collide with the arc-shaped shaft, the contact surface is a straight line, which reduces the contact surface of the positioning plate on the drive shaft, thereby reducing the possibility of scratches caused by positioning.

[0018] 3. A portion of the cooling water will flow through the surface of the shaft and gather in the V-groove of the clamping shaft. The surface of the shaft does not contact the bottom of the V-groove, so the cooling water will not lubricate the fixation of the drive shaft, nor will it affect the positioning and fixation effect of the drive shaft, thereby further improving the accuracy of drilling and tapping and ensuring product quality.

[0019] Preferably, the surface of the positioning platform is an inclined surface, and a water retaining bar is provided on the positioning platform; the positioning platform is connected to a water leakage channel, and the water leakage channel is connected to a circulating water tank.

[0020] The beneficial effect of this solution is that the inclined surface and the water retaining strip can guide the cooling water into the leakage channel, and the cooling water can be recycled through the leakage channel and the circulating water tank.

[0021] Preferably, a water receiving trough is provided between the water leakage channel and the circulating water tank, and a filter is provided between the water receiving trough and the circulating water tank.

[0022] The beneficial effects of this solution are: 1. The filter prevents waste chips generated by drilling and tapping from entering the circulating water tank.

[0023] 2. If the filter is set in the leakage channel, the filter will be blocked by the gradually accumulated waste chips relatively quickly, affecting the normal circulation and recovery of the cooling water. At this time, the drilling and tapping machine needs to be stopped to clean the waste chips; but after the filter is set between the leakage trough and the circulating water tank, only a small part of the waste chips will gradually accumulate on the filter under the action of the water flow until it affects the smooth circulation of the cooling water. This time will be relatively extended, thereby reducing the downtime of the drilling and tapping machine and ensuring production efficiency.

[0024] Preferably, a connecting plate is provided between the positioning platform and the sliding platform, and two sides of the connecting plate extend outside the two sides of the positioning platform.

[0025] The beneficial effect of this solution is that the addition of a connecting table can not only ensure the stability of the positioning table during sliding, but also receive waste chips. The connecting table blocks this part of the waste chips and prevents it from entering the leakage trough, thereby further extending the time required to stop the machine to clean the waste chips.

[0026] Preferably, it also includes an automatic controller and a feeding mechanism, the feeding mechanism includes a robotic arm, and the robotic arm is connected to the automatic controller.

[0027] The beneficial effects of this solution are: realizing automatic processing of drilling and tapping machines and improving machine automation.

[0028] Preferably, a water level sensor is provided in the water receiving tank, and the water level sensor is connected to the automatic controller.

[0029] The beneficial effects of this solution are: 1. Automatic detection of waste chip accumulation is achieved through a water level sensor, further improving the automation of the drilling and tapping machine.

[0030] 2. By increasing the setting height of the water level sensor, the time for cleaning waste chips can be further extended, thereby improving processing efficiency.

[0031] Preferably, the water leakage channel is in a < shape as a whole.

[0032] The beneficial effects of this solution are as follows: after the leaking channel is positioned in a < shape, the upper half becomes the first channel and the lower half becomes the second channel. When cooling water flushes debris from the inclined surface into the leaking channel, the right side wall of the first channel receives the debris while the cooling water continuously flushes the right side wall of the first channel, thereby preventing debris from adhering. At the same time, the left side wall of the first channel, being located obliquely above the cooling water flow, is less susceptible to debris adhesion. Guided by the inclined side wall of the first channel, the cooling water flushes onto the left side wall of the second channel, thereby preventing debris from adhering to the right side wall of the second channel. While the left side wall receives the debris, it is also continuously flushed by the cooling water, thereby preventing debris from adhering.

[0033] Preferably, the polishing mechanism further includes an air compressor and a bamboo-jointed air jet pipe, and the bamboo-jointed air jet pipe is connected to the air outlet end of the air compressor.

[0034] The beneficial effect of this solution is: before grinding, the inside of the shaft body is first blown out by the bamboo jet tube to blow out most of the accumulated water inside the shaft body, and then the shaft body is rotated and ground by the grinding mechanism, thereby further improving the effect of clearing the accumulated water inside the shaft body for the next step of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a three-dimensional diagram of the drilling and tapping machine in Example 1 of the present invention.

[0036] Figure 2 This is a cross-sectional view of the transmission shaft after drilling and tapping in Example 1 of the present invention.

[0037] Figure 3 This is a three-dimensional diagram from the right side perspective of the drilling and tapping machine in Example 1 of the present invention.

[0038] Figure 4 This is a front view of the drilling and tapping mechanism in Example 1 of the present invention.

[0039] Figure 5 This is an exploded view of the grinding disc in the retracted state in Example 1 of the present invention.

[0040] Figure 6 This is a three-dimensional diagram of the unfolded state of the grinding sheet in Example 1 of the present invention.

[0041] Figure 7 This is a schematic structural diagram of the water leakage channel in Example 2 of the present invention. DETAILED DESCRIPTION

[0042] The following is further described in detail through specific implementation methods:

[0043] The reference numerals in the drawings of the specification include: transmission shaft 1, shaft body 11, connecting portion 12, driving gear teeth 13, driven gear teeth 14, threaded hole 15, slide 2, positioning platform 3, connecting platform 31, water retaining bar 32, water leakage groove 33, water leakage plate 34, water leakage channel 34 1. First channel 342, second channel 343, positioning plate 35, V-groove 351, positioning column 36, pressing cylinder 37, pressing block 371, punching drill 4, chamfering drill 401, tap 402, pressing table 41, drilling motor 42, drilling cylinder 43, guide rod 44, connecting plate 5, grinding table 6, slide rail 61, slider 611, connecting box 62, grinding motor 63, rotating rod 64, rotating disk 641, arc-shaped groove 642, grinding sheet 65, sliding rod 651, water shoveling part 652, water storage chamber 653, fixing pipe 66, fixing disk 661, strip groove 662, annular groove 663, bamboo cooling pipe 7, discharge conveyor belt 8, feed conveyor belt 9.

[0044] Example 1

[0045] Example 1 is basically as shown in the attached Figure 1-6 As shown, Figure 1 The drilling and tapping machine shown in the figure includes a machine tool (not shown in the figure), a positioning mechanism, a drilling and tapping mechanism, a grinding mechanism and a cooling mechanism. The transmission shaft 1 in this embodiment has a structure as shown in FIG. Figure 2 As shown, the transmission shaft 1 is Y-shaped as a whole, including a shaft body 11 and a connecting portion 12. A driving gear 13 and a driven gear 14 are provided inside the shaft body 11. There is a gap between the driving gear 13 and the driven gear 14, and the threaded hole 15 is located in the middle of the gap. The positioning mechanism positions and fixes the transmission shaft 1 to be processed to prevent the transmission shaft 1 from moving during the drilling process, which would affect the drilling quality; the drilling and tapping mechanism performs drilling and tapping operations on the positioned transmission shaft 1 to complete the processing of the threaded hole 15; the grinding mechanism grinds the outer periphery of the threaded hole 15 inside the transmission shaft 1 to eliminate burrs inside the shaft body 11; the cooling mechanism provides circulating cooling water to spray water on the drill bit during processing to cool it down, thereby reducing the processing temperature, reducing drill bit wear, improving drilling and tapping efficiency and processing accuracy, and continuously spraying water to wash away waste chips and abrasive particles to prevent them from adhering to the drill bit or tap 402, further extending the service life of the tool and maintaining drilling and tapping stability.

[0046] like Figure 3 As shown, the positioning mechanism includes a slide 2 and a positioning platform 3 slidably connected to the slide 2, and a positioning assembly is provided on the positioning platform 3. The slide 2 is welded and fixed on the machine tool. The specific method of the sliding connection between the positioning platform 3 and the slide 2 is as follows: a connecting platform 31 is added between the slide 2 and the positioning platform 3. A slide groove is provided at the bottom of the connecting platform 31. The connecting platform 31 is slidably connected to the slide 2 through the slide groove. The positioning platform 3 is welded and fixed to the middle of the surface of the connecting platform 31. The length of the connecting platform 31 is greater than the length of the positioning platform 3. Therefore, after being fixed, the connecting platform 31 extends to both sides relative to the two ends of the positioning platform 3. The ends of the connecting platform 31 are connected to a cylinder. By controlling the extension and contraction of the cylinder output shaft, the positioning platform 3 can be made to slide left and right in the horizontal direction relative to the slide 2. The surface of the positioning platform 3 is an inclined surface. The pressing assembly includes a clamping cylinder 37, a positioning plate 35, and a positioning column 36. The clamping cylinder 37, the positioning plate 35, and the positioning column 36 are fixed on the inclined surface in descending order. There are two positioning plates 35 and two positioning columns 36, and both are fixed to the positioning platform 3 by welding. A connecting block is fixed to the bottom of the clamping cylinder 37 by screws. The bottom of the connecting block is fixed to the positioning platform 3 to achieve a fixed connection between the clamping cylinder 37 and the positioning platform. The bottom of the connecting block, the positioning plate 35, and the positioning column 36 are all inclined surfaces to ensure that after being fixed to the inclined surface, the top of the clamping cylinder 37, the top of the positioning plate 35, and the top of the positioning column 36 are all on a horizontal plane, thereby ensuring that the transmission shaft 1 can be drilled and tapped in a horizontal state and ensuring the stability of the threaded hole 15 and the positioning assembly.

[0047] like Figure 3 As shown, a clamping block 371 is vertically fixed to the end of the output shaft of the clamping cylinder 37. When the output shaft of the clamping cylinder 37 is shortened, the clamping block 371 can be driven to move downward until it is in contact with the upper surface of the transmission shaft 1, and is pressed downward to fix it. In order to improve the pressing effect and reduce the scratches on the surface of the transmission shaft 1, a rubber sleeve is bonded to the bottom of the clamping block 371. A V-groove 351 of the same shape and size is provided on each of the two positioning plates 35. The shaft body 11 of the transmission shaft 1 is placed in the two V-grooves 351 to support and position the transmission shaft 1. The V-groove 351 can accommodate transmission shafts 1 of various models and sizes. In addition, when positioning the shaft body 11 of the transmission shaft 1, the side walls on both sides of the V-groove 351 are inclined planes. When the inclined planes are against the arc-shaped shaft body 11, the contact surface is a straight line, so as to reduce the contact of the positioning plate 35 with the transmission shaft 1. At the same time, since the cooling mechanism will continuously spray water during processing, part of the cooling water will flow through the surface of the shaft body 11 and gather in the V-shaped groove 351 of the clamping shaft body 11. However, in this embodiment, the surface of the shaft body 11 does not contact the bottom of the V-shaped groove 351. Therefore, this part of the gathered cooling water will not play a lubricating role in the fixation of the transmission shaft 1, and will not affect the positioning and fixing effect of the transmission shaft 1, thereby further improving the accuracy of drilling and tapping and ensuring product quality. The tops of the two positioning columns 36 are both set as concave arc surfaces. The two positioning columns 36 respectively support and position the two ends of the connecting portion 12 of the transmission shaft 1. While further improving the positioning effect, the concave arc surface can also reduce the possibility of rotation of the transmission shaft 1.

[0048] like Figure 4As shown, the drilling and tapping mechanism includes a punching drill 4, a chamfering drill 401, a tap 402, a pressing platform 41, a connecting plate 5 and a drilling and tapping cylinder 43. During the drilling and tapping operation, the positioning platform 3 drives the fixed transmission shaft 1 to gradually slide to the left along the slide 2. The drilling and tapping mechanism is sequentially arranged from right to left as the chamfering drill 401, the punching drill 4 and the tap 402, that is: first, the transmission shaft 1 is chamfered by the chamfering drill 401, and then the transmission shaft 1 is slid to the left to the bottom of the punching drill 4 for drilling, and finally, the transmission shaft 1 is further slid to the left to the bottom of the tap 402 for tapping, thereby completing the processing of the threaded hole 15. Chamfering and then drilling can avoid burrs at the connection between the threaded hole 15 and the outer surface of the transmission shaft 1. At the same time, a power part is provided on the pressing platform 41. In this embodiment, the power part is a drilling and tapping motor 42, and the drilling and tapping motor 42 is fixed to the pressing platform 41 by screws. The drilling and tapping motor 42 is connected to the punch drill 4, chamfer drill 401 and tap 402 at the same time through a multi-axis device, so that the motor drives the three drill bits to rotate simultaneously during processing; and the spacing distance between the punch drill 4, chamfer drill 401 and tap 402 is greater than the radius of the shaft 11 to ensure that during the processing of a certain drill bit, the other two rotating drill bits will not contact the shaft 11.

[0049] Meanwhile, the connecting plate 5 is fixed to the machine tool, and the drilling and tapping cylinder 43 is screwed to the top of the connecting plate 5. The connecting plate 5 has a through hole through which the output shaft of the drilling and tapping cylinder 43 passes and is fixedly connected to the pressing platform 41. When the drilling and tapping cylinder 43 is in operation, the output shaft extends, which drives the pressing platform 41 to slowly move downward, thereby driving the motor and the three drill bits to press downward and achieve drilling. A vertical guide rod 44 is also provided between the connecting plate 5 and the pressing platform 41. The guide rod 44 ensures that the three drill bits can move vertically downward, thereby further ensuring the quality of the drilling.

[0050] like Figure 1As shown, the cooling mechanism includes a bamboo cooling pipe 7, a circulating water tank (not shown) and a leaking plate 34 welded to the bottom of the positioning platform 3. The bamboo cooling pipe 7 can be bent and deformed according to the drilling and tapping machine structure to ensure that the nozzle is aligned with the drill bit without interfering with other structures for effective cooling. A leaking groove 33 is provided on the surface of the positioning platform 3 near one end of the leaking plate 34, and a leaking channel 341 is provided inside the leaking plate 34, which is connected to the leaking groove 33; both sides of the positioning platform 3 and one end away from the leaking plate 34 are welded and fixed with a water retaining bar 32. The bottom end of the leaking plate 34 is connected to a water receiving trough (not shown), which is rectangular and located below the machine tool. The water receiving trough is connected to the circulating water tank through a pipeline. The circulating water tank is connected to a water pump, and the water outlet of the water pump is connected to the bamboo cooling pipe 7. When the water pump works, the cooling water in the circulating water tank can be sprayed onto the drill bit during operation through the bamboo cooling pipe 7. During the process of spraying cooling water, the cooling water falls on the positioning platform 3, and under the action of the inclined surface of the positioning platform 3 and the water retaining bar 32, flows toward the leakage plate 34, and then flows into the leakage trough 33 through the leakage channel 341 to be recovered and temporarily stored in the circulating water tank, thereby reducing the use of cooling water in the processing process and reducing the production cost of the enterprise.

[0051] During the drilling process of the drive shaft 1, waste chips will continue to be generated. Therefore, a filter is installed at the connection port between the water receiving trough and the water storage tank to prevent waste chips from entering the circulating water tank and damaging the water pump. The filter is set in the water receiving trough to ensure that the drilling machine can continue to work. If the filter is set in the leakage channel 341, the filter will be blocked by the gradually accumulated waste chips relatively quickly, affecting the normal circulation and recovery of the cooling water. At this time, it is necessary to suspend the drilling machine to clean up the waste chips. However, after the filter is set in the water receiving trough and the area of ​​the water receiving trough under the machine tool is increased, some of the waste chips will enter the water receiving trough through the leakage channel 341 and will be laid in the water receiving trough. Only a small part will gradually accumulate on the filter under the action of water flow until it affects the smooth circulation of the cooling water. This time will be relatively extended, thereby reducing the downtime of the drilling machine and ensuring production efficiency. In addition, during the actual processing, part of the waste chips generated will fall on the positioning table 3, and the other part will fall on the connecting tables 31 extending from both sides of the positioning table 3. That is, the addition of the connecting tables 31 can not only ensure the stability of the positioning table 3 during the sliding process, but also can take over the waste chips. The connecting tables 31 block this part of the waste chips to prevent them from entering the water tank, thereby further extending the time required to stop the machine to clean the waste chips.

[0052] like Figure 1As shown, the grinding mechanism includes a grinding table 6, a slide rail 61, a grinding motor 63, a grinding piece, and several grinding discs 65. The bottom of the grinding table 6 is welded and fixed to the machine tool. The slide rail 61 is fixed to the grinding table 6. A slider 611 is slidably connected to the slide rail 61. A connecting box 62 is fixed to the slider 611. The grinding motor 63 is fixed to the top of the connecting box 62. The grinding motor 63 can drive several grinding discs 65 to expand and retract along the grinding piece to prevent the grinding discs 65 from scratching the driven gear teeth 14 during the process of entering and exiting the shaft body 11, thereby affecting the subsequent transmission function of the transmission shaft 1. When the grinding discs 65 are expanded, they can grind away burrs on the threaded holes 15 in the intermittent section, ensuring the quality of the finished product of the transmission shaft 1.

[0053] The specific structure of the grinding sheet 65 and the grinding piece is as follows Figure 5 As shown, the grinding member includes a fixed tube 66 and a rotating rod 64, and the rotating rod 64 is disposed within the fixed tube 66. One end of the rotating rod 64 is fixed to the output shaft of the grinding motor 63 via a coupling, and one end of the fixed tube 66 is fixed to the motor body. After being fixed, the fixed tube 66 and the rotating rod 64 are coaxial. A fixed disk 661 is fixed to the other end of the fixed tube 66. A through hole is formed at the center of the fixed disk 661, and the rotating rod 64 passes through the through hole and is rotatably connected to the fixed disk 661. The fixed disk 661 is provided with an annular groove 663 and four mutually perpendicular strip grooves 662. The four strip grooves 662 are all connected to the annular groove 663, and a trumpet-shaped transition section is provided at the connection between the strip groove 662 and the annular groove 663. At the same time, the rotating rod 64 passes through the fixed plate 661 and is fixedly connected to a rotating plate 641. The rotating plate 641 is coaxial with the fixed plate 661 and is provided with four arcuate slots 642. Each of the four arcuate slots 642 is a through slot, with the end closest to the center of the slot as the starting point. The starting points of the four arcuate slots 642 coincide with the starting points of the four strip slots 662 below. There are four grinding plates 65, which can be spliced ​​together to form a hollow cylinder. A sliding rod 651 is slidably connected to each arcuate slot 642. A connecting rod is vertically fixed to the side of each sliding rod 651. The other end of the connecting rod is fixedly connected to the inner wall of the grinding plate 65. The bottom of the sliding rod 651 is slidably connected to the strip slot 662. To improve the sliding stability of the sliding rod 651, a protrusion is fixed to the bottom of the sliding rod 651. The inner wall of the strip slot 662 and the inner wall of the annular groove 663 are both provided with a sliding groove, and the protrusion slides within the sliding groove. In addition, a limiting ring is fixed at the bottom of the rotating disk 641, and the inner diameter of the limiting ring is the same as the outer diameter of the fixed disk 661, so that the rotating disk 641 is sleeved on the fixed disk 661 through the limiting ring, thereby improving the stability of the rotating disk 641 and the fixed disk 661 when they rotate relative to each other.

[0054] by Figure 5As shown in the direction, when the grinding motor 63 drives the rotating rod 64 to rotate clockwise, the fixed tube 66 and the fixed plate 661 remain stationary, the rotating plate 641 rotates clockwise, and the arc groove 642 rotates relative to the lower strip groove 662, thereby driving the slide rod 651 to slide from the center of the fixed plate 661 to the surrounding area, thereby driving the grinding plate 65 from the retracted state to the open state. Figure 6 The expanded state is shown. The expanded grinding disc 65 fits neatly into the inner wall of the gap between the driven gear teeth 14 and the driving gear teeth 13 in the shaft body 11. The grinding motor 63 continuously drives the rotating rod 64 to rotate clockwise, and the grinding disc 65 remains in the expanded state to grind and remove burrs on the inner wall. When the grinding motor 63 stops rotating, the rotating disk 641 immediately stops rotating. Under the action of inertia, the slide rod 651 passes through the trumpet-shaped transition section where the strip groove 662 and the annular groove 663 are connected, and returns to the starting point of the strip groove 662 and the arc groove 642, automatically completing the retraction. The retracted grinding disc 65 exits the shaft body 11 under the action of the slider 611 and the slide rail 61.

[0055] And, as Figure 6 As shown, each grinding disc 65 has a V-shaped groove on one side, and the opening direction of the V-shaped groove is clockwise. The V-shaped groove forms a water-shoveling portion 652 with two cones on one side of the grinding disc 65. A water storage chamber 653 is formed inside the grinding disc 65, and the water storage chamber 653 is connected to the water-shoveling portion 652. When the grinding disc 65 is driven into and out of the shaft body 11 by the slide rail 61 and the slider 611, the grinding disc 65 is in a retracted state, thereby preventing the grinding disc 65 from scratching the driven gear teeth 14. At the same time, since the cooling water will enter the shaft body 11 through the threaded hole 15 during the drilling process, combined with the Figure 2 As shown, under the blocking effect of the driven gear teeth 14 and the driving gear teeth 13, it is difficult to pour out all the accumulated water inside the intermittent section. During the rotational grinding process of the grinding disc 65, the conical water shoveling portion 652, which is in contact with the inner wall of the intermittent section, shovels the accumulated water and the small waste chips produced after grinding into the water storage chamber 653 and temporarily stores them, thereby removing the accumulated water inside the transmission shaft 1, so as to facilitate the next step of drying the transmission shaft 1 and plating the anti-rust layer. In addition, while the grinding disc 65 rotates and grinds and collects accumulated water in the intermittent section, the end of the water shoveling portion 652 away from the inner wall of the transmission shaft 1 (that is, the inner side of the V-shaped groove away from the transmission shaft 1) can block the shoveled accumulated water and small waste chips, thereby preventing small waste chips from entering between the rotating disk 641 and the fixed disk 661, causing wear and obstruction to the contact surface of the rotating disk 641 and the fixed disk 661. While ensuring the stability of the connection between the rotating disk 641 and the fixed disk 661, small waste chips are prevented from blocking the relative rotation between the rotating disk 641 and the fixed disk 661, thereby ensuring that the grinding disc 65 can be smoothly unfolded and folded.

[0056] At the same time, an air compressor is installed inside the connection box 62. The air inlet and outlet of the air compressor both extend outside the connection box 62. A bamboo-shaped air jet pipe (not shown in the figure) is fixed to the air outlet of the air compressor through a flange. The air jet port of the bamboo-shaped air jet pipe is directly facing the interior of the shaft body 11 after drilling and tapping. Before grinding, the inside of the shaft body 11 is first blown out with air through the bamboo-shaped air jet pipe to blow out most of the accumulated water inside the shaft body 11. Then, the grinding mechanism is used to perform rotary grinding, thereby further improving the effect of clearing the accumulated water inside the shaft body 11 for the next step.

[0057] Finally, if Figure 1 As shown, the drilling and tapping machine also includes a feed conveyor belt 9 and a discharge conveyor belt 8, through which the feed conveyor belt 9 and the discharge conveyor belt 8 are used to feed the drive shaft 1 to be processed and to discharge the drive shaft 1 after processing.

[0058] The specific implementation process is as follows: the transmission shaft 1 to be processed is continuously fed in by the feed conveyor belt 9 .

[0059] First, position the positioning platform 3 to the left of the drilling and tapping mechanism to prevent it from interfering with the positioning of the drive shaft 1. When securing the drive shaft 1 to the positioning platform 3, ensure that the end of the shaft 11 abuts against the connecting block. Then, position and secure the drive shaft 1 using the clamping cylinder 37, positioning plate 35, and positioning column 36. Then, slide the positioning platform 3 to the right of the drilling and tapping mechanism, and drilling and tapping will begin.

[0060] First, use the rightmost chamfer drill 401 to chamfer the surface of the transmission shaft 1. Since the chamfering depth is shallow, the extended length of the output shaft of the drilling and tapping cylinder 43 is short at this time. After the chamfering is completed, the output shaft of the drilling and tapping cylinder 43 retracts and drives the chamfering drill 401 head to move up through the positioning platform 3. The positioning platform 3 slides to the left so that the blind hole formed by the chamfer on the transmission shaft 1 is located directly below the punching drill 4. The output shaft of the drilling and tapping cylinder 43 extends again, driving the punching drill 4 to punch the transmission shaft 1. After the punching is completed, the drilling and tapping cylinder 43 drives the pressing platform 41 to move up again, so that the punching drill 4 is withdrawn, and the positioning platform 3 is continued to slide to the left so that the hole is located below the tap 402. The drilling and tapping cylinder 43 pushes the positioning platform 3 to make the rotating tap 402 tap the through hole to form a threaded hole 15. The drilling and tapping is completed and the threaded hole 15 is formed.

[0061] During drilling and tapping, the bamboo cooling pipe 7 in the cooling mechanism sprays cooling water on the working drill bit to cool it down, thereby ensuring the standardization of the drilled hole; and the cooling water spraying stops when the drilling is completed.

[0062] After drilling and tapping, water accumulates inside the transmission shaft 1. At this time, the air compressor starts and sprays air into the transmission shaft 1 through the bamboo-shaped air jet pipe, blowing out most of the accumulated water. Then, the sliding block 611 moves the retracted grinding disc 65 into the interior of the shaft body 11. When the grinding disc 65 moves to the intermittent section, the grinding motor 63 drives the rotating disk 641 to rotate clockwise via the rotating rod 64, and the grinding disc 65 unfolds and starts grinding. While grinding and removing burrs on the inner wall of the shaft body 11, the rotating grinding disc 65 shovels the remaining accumulated water and fine debris in the intermittent section into the water storage chamber 653 through the water shoveling part 652, collecting them in the water storage chamber 653, thus clearing the accumulated water for the next operation of the transmission shaft 1.

[0063] After the grinding is completed, the grinding motor 63 stops, the grinding disc 65 automatically retracts, and the grinding disc 65 is then moved out of the shaft body 11 by the slider 611. The processing is completed, and the transmission shaft 1 is finally discharged through the discharge conveyor 8. In addition, after the grinding disc 65 exits the interior of the transmission shaft 1, the water stored in the water chamber 653 is cleaned out at regular intervals.

[0064] Example 2

[0065] like Figure 7 The drilling and tapping machine shown is different from the embodiment 1 in that the water leakage channel 341 includes a first channel 342 and a second channel 343 that are interconnected, and the water leakage channel 341 is in a < shape as a whole.

[0066] During the drilling process, cooling water on the positioning platform 3 continuously flows along the inclined surface into the leakage channel 341, thereby flushing some of the waste chips on the inclined surface into the leakage channel 341. Since the waste chips that can be flushed are usually small in size and light in weight, the waste chips tend to adhere to the side walls of the leakage channel 341 after being flushed. The side close to the positioning platform 3 is the right wall, and the side away from the positioning platform 3 is the left wall. The waste chips on the left wall will be washed away by the continuous flushing of cooling water. However, the waste chips adhering to the right wall are difficult to fall off and be discharged due to the lack of cooling water flow, making it difficult to clean.

[0067] After the leakage channel 341 is positioned, the upper portion becomes the first channel 342, and the lower portion becomes the second channel 343. When cooling water flushes debris from the inclined surface into the leakage channel 341, the right side wall of the first channel 342 receives the debris while the cooling water continuously flushes the right side wall of the first channel 342, thereby preventing debris from adhering. Simultaneously, the left side wall of the first channel 342, being located obliquely above the cooling water flow, is less susceptible to debris adhesion. Guided by the inclined side wall of the first channel 342, the cooling water flushes onto the left side wall of the second channel 343, thereby preventing debris from adhering to the right side wall of the second channel 343. While the left side wall receives the debris, it is also continuously flushed by the cooling water, thereby preventing debris from adhering.

[0068] By setting the water leakage channel 341 in a < shape, the problem of waste debris adhering to the side wall of the water leakage channel 341 and being unable to be automatically discharged and requiring manual cleaning is avoided.

[0069] Example 3

[0070] Unlike Example 2, the drilling machine further includes a PLC controller and a feeding mechanism, which includes a robotic arm. The robotic arm and each of the positioning mechanism, drilling mechanism, cooling mechanism, and grinding mechanism are connected to the PLC controller. The operating programs of each device are programmed into the PLC controller, and the PLC controller is used to automatically drill and tap the drive shaft 1.

[0071] The PLC controller controls the robotic arm to grab the transmission shaft 1 to be processed from the feed conveyor belt 9, and place the transmission shaft 1 horizontally in the positioning assembly. The robotic arm clamps the shaft body 11 and adjusts it so that the end of the shaft body 11 is against the connecting block. The robotic arm then leaves, and the positioning assembly automatically presses and fixes the transmission shaft 1.

[0072] Then, the PLC controller controls the drilling and tapping mechanism, the cooling mechanism and the grinding mechanism to perform a series of processing procedures such as drilling, tapping and grinding on the transmission shaft 1. After the grinding is completed, the mechanical arm clamps the transmission shaft 1 to realize the discharge.

[0073] Example 4

[0074] A drilling and tapping machine is different from Example 3 in that a water level sensor is fixed on the inner wall of the water receiving trough, and the water level sensor is also connected to the PLC controller.

[0075] During the production process, as processing progresses, the amount of waste debris entering the water receiving trough gradually increases, accumulating on the filter screen in the channel connecting the trough to the water storage tank, causing the filter screen to become clogged. Once the filter screen becomes clogged, water begins to accumulate in the trough. The rising water level contacts the water level sensor, triggering it to issue a water level warning signal. Upon receiving this signal, the PLC controller automatically pauses processing, allowing staff to clean the trough and restart.

[0076] The water level sensor automatically detects chip accumulation, further improving the automation of the drilling machine. Furthermore, by increasing the height of the water level sensor, the time for chip removal can be further extended, thereby improving processing efficiency.

[0077] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A drilling and tapping machine, characterized in that: It includes a positioning mechanism, a drilling and tapping mechanism and a grinding mechanism. The positioning mechanism includes a slide and a positioning platform slidably connected to the slide, and the positioning platform is provided with a positioning component; the drilling and tapping mechanism includes a punching drill, a chamfering drill, a tap and a pressing platform, and the pressing platform is provided with a power part, and the punching drill, chamfering drill and tap are all connected to the power part; the grinding mechanism includes a grinding piece and several grinding sheets, and the several grinding sheets can be spliced ​​into a hollow cylinder, and the several grinding sheets can be expanded or retracted along the grinding piece; a V-shaped groove is provided on one side of the grinding sheet, and a water storage cavity is provided inside the grinding sheet, and the water storage cavity is connected to the V-shaped groove, and the opening direction of the V-shaped groove is clockwise. The V-shaped groove is opened so that a water shoveling part with two cones is formed on one side of the grinding sheet, and the water storage cavity is connected to the water shoveling part.

2. A drilling and tapping machine according to claim 1, characterized in that: The grinding part includes a fixed tube and a rotating rod. The power part is a grinding motor. The rotating rod is connected to the grinding motor. The fixed tube is fixedly mounted on the rotating rod. The fixed tube is connected to a fixed plate. The rotating rod is connected to a rotating plate. A plurality of sliding rods are slidably connected between the fixed plate and the rotating plate. The plurality of sliding rods are connected to a plurality of grinding plates. When the rotating plate rotates relative to the fixed plate, the plurality of sliding rods can slide away to the surrounding areas with the rotating rod as the center.

3. A drilling and tapping machine according to claim 2, characterized in that: The positioning assembly includes a positioning plate, a positioning column and a pressing block, and the positioning plate is provided with a V-shaped groove.

4. A drilling and tapping machine according to claim 3, characterized in that: The surface of the positioning platform is an inclined surface, and a water retaining strip is provided on the positioning platform; the positioning platform is connected to a water leakage channel, and the water leakage channel is connected to a circulating water tank.

5. The drilling and tapping machine according to claim 4, characterized in that: A water receiving trough is provided between the water leakage channel and the circulating water tank, and a filter is provided between the water receiving trough and the circulating water tank.

6. The drilling and tapping machine according to claim 5, characterized in that: A connecting plate is provided between the positioning platform and the slide, and two sides of the connecting plate extend outside the two sides of the positioning platform.

7. The drilling and tapping machine according to claim 5, characterized in that: It also includes an automatic controller and a feeding mechanism. The feeding mechanism includes a mechanical arm, and the mechanical arm is connected to the automatic controller.

8. The drilling and tapping machine according to claim 7, characterized in that: A water level sensor is provided in the water receiving tank, and the water level sensor is connected to the automatic controller.

9. The drilling and tapping machine according to claim 4, characterized in that: The overall shape of the leakage channel is <.

10. The drilling and tapping machine according to claim 1, characterized in that: The polishing mechanism also includes an air compressor and a bamboo-jointed air jet pipe, and the bamboo-jointed air jet pipe is connected to the air outlet end of the air compressor.

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