Taper hole opening equipment for motor output shaft

Abstract

The invention relates to the technical field of tapping equipment, and particularly discloses motor output shaft taper hole tapping equipment which comprises a machine tool body and a chuck. The tool rest is positioned on the outer side of the chuck; the shaft rod is mounted on the surface of the tool rest; the motor output shaft taper hole tapping equipment comprises a shaft rod, an adjustable taper hole drilling tool located at the end of the shaft rod, a scrap cleaning mechanism located at the end of the shaft rod, and a collecting mechanism located at the end of the shaft rod according to different scrap viscosities of motor output shafts. Viscosity of chippings cut from the inner wall of the semi-closed taper hole space is detected in advance through the chipping cleaning mechanism, the chipping cleaning mechanism dynamically adjusts the gas-liquid proportion of jet gas according to different chipping viscosities, meanwhile, the collecting mechanism synchronously adjusts the adsorption strength, scrap iron is prevented from winding and scraping a machined conical surface, and therefore regular halt for cleaning the scrap iron in the taper hole is not needed, and the working efficiency is improved. Machining and scrap cleaning are synchronously carried out, and scrap iron backflow pollution is reduced during batch machining.

Description

TECHNICAL FIELD

[0001] The application relates to a motor output shaft taper hole opening device. BACKGROUND

[0002] The motor output shaft taper hole opening device is a device for drilling, boring, reaming and finishing of the taper hole of the motor output shaft end, and is used for machining the taper hole of the motor output shaft which cooperates with the taper surface of the coupling, pulley, flange and other accessories.

[0003] There are many types of motor output shaft taper hole opening devices, among which the numerical control lathe is the most mainstream, which is suitable for machining the taper hole of various specifications of motor output shafts, controls the tool path of the tool through the numerical control system, realizes the machining of the taper hole, is suitable for batch production, and is also the core basic equipment for machining the motor shaft.

[0004] When the motor output shaft is opened, first, a center drill is used to drill a shallow centering hole in the center of the shaft end surface to guide the subsequent drilling of the straight bottom hole by a twist drill; then a twist drill of matching specifications is used to drill a straight bottom hole along the centering hole axis; then a straight hole rough boring tool is used to expand the straight bottom hole to the small end diameter of the taper hole, correct the bottom hole roundness deviation caused by the twist drill, ensure the basic accuracy of the small end diameter of the taper hole, and prepare for subsequent taper rough boring; then an adjustable taper rough boring tool is replaced, and the taper hole is roughly turned from the small end to the large end (the shaft end direction) according to the taper ratio set by the numerical control program, and the core is to remove most of the machining allowance; finally, a taper finishing boring tool is replaced, and the taper hole is finished according to the program, directly machining to the taper angle and large end diameter required by the drawing, ensuring the straightness of the taper surface element line and the size accuracy, and after the finishing, the numerical control program controls the tool to first retreat radially (away from the inner wall of the taper hole), and then retreat axially (outward along the axis).

[0005] However, in the machining process, the taper hole is a semi-closed machining space, and the iron filings generated during machining cannot be quickly discharged, but will accumulate and wind in the taper hole. The high-speed rotating iron filings will directly scratch the machined inner wall of the taper surface, and the small end of the taper hole is a closed end, and the iron filings are easy to accumulate at the small end. Even if the high-pressure cooling liquid is turned on, it is also difficult to flush out the iron filings from the narrow taper hole, and only the tool rotation can bring out the iron filings, affecting the surface roughness and machining accuracy. Therefore, during batch machining, it is necessary to regularly stop the machine to clean the machining area of the machine tool and the taper hole machining station, so as to avoid the backflow of the bed body iron filings into the taper hole and affect the machining efficiency. Therefore, we propose a motor output shaft taper hole opening device. SUMMARY

[0006] The motor output shaft taper hole opening equipment aims to solve the problem that the machine tool processing area and the taper hole processing station need to be cleaned regularly to avoid the iron chips flowing back to the taper hole and affecting the processing efficiency.

[0007] To achieve the above object, the motor output shaft taper hole opening equipment comprises a machine tool main body and a chuck. The adjustable taper hole drill bit is located at the end of the shaft rod, connected with the machine tool main body, and the cutting diameter of the adjustable taper hole drill bit can be adjusted. The chip cleaning mechanism is located at the end of the shaft rod and can adjust the cleaning force of the chips in the taper hole according to the viscosity of the chips of different motor output shafts. The collection mechanism is located at the end of the shaft rod and can collect the loose chips after the chips in the taper hole are separated from the hole wall by the chip cleaning mechanism.

[0008] The adjustable taper hole drill bit comprises a tool rod fixedly connected with the end of the shaft rod, a tool head slidingly connected with the inner wall of the tool rod, and a blade fixedly connected with the end of the tool head away from the tool rod.

[0009] The chip cleaning mechanism comprises a fixed box fixedly connected with the end of the shaft rod, a spray head communicated with the top of the fixed box, a detection piece for detecting the air pressure of the spray head arranged on the inner wall of the spray head, the spray opening of the spray head facing the blade, an air inlet pipe and a cooling liquid pipe communicated with the outside of the fixed box, the end of the cooling liquid pipe away from the fixed box penetrating through the shaft rod and connected with a cooling liquid tank in the machine tool main body, a micro air pump installed on the outside of the tool holder, the output end of the micro air pump communicated with the air inlet pipe, a mixing piece arranged on the inner wall of the fixed box and communicated with the air inlet pipe and the cooling liquid pipe, and the mixing piece adjusting the gas-liquid mixing ratio according to the air pressure detected by the detection piece.

[0010] The detection piece comprises an air inlet hole, an air outlet hole, a detection chamber and a guide groove arranged on the inner wall of the spray head, the air inlet hole communicated with the fixed box, the air inlet hole communicated with the detection chamber, the guide groove communicated with the detection chamber, the air outlet hole communicated with the guide groove, a tympanic membrane installed on the inner wall of the detection chamber, a transmission rod fixedly connected with the outside of the tympanic membrane, a compression spring arranged on the outside of the transmission rod and fixed with the inner wall of the detection chamber, a sliding rheostat installed on the outside of the spray head, and the sliding piece of the sliding rheostat fixed with the transmission rod.

[0011] The mixing piece includes a mixing cavity formed in the inner wall of the fixed box, the mixing cavity is communicated with the air inlet pipe, the inner wall of the fixed box is provided with a liquid conveying groove, the two ends of the liquid conveying groove are communicated with the cooling liquid pipe and the mixing cavity respectively, and the inner wall of the liquid conveying groove is provided with an adjusting piece for adjusting the inner diameter of the cooling liquid flow according to the resistance value change of the sliding resistor.

[0012] The mixing cavity includes a contraction section, a throat section and a diffusion section, the contraction section is communicated with the air inlet pipe, and the liquid conveying groove is communicated with the throat section of the mixing cavity.

[0013] The adjusting piece includes a rubber tube fixedly connected with the liquid conveying groove near one end of the throat section, an expansion ring slidably connected with the inner wall of the rubber tube, a moving frame fixedly connected with the outer side of the expansion ring, a return spring fixedly connected with the outer side of the moving frame, the return spring being fixed with the inner wall of the fixed box, the moving frame being slidably and sealingly connected with the inner wall of the fixed box, an iron sheet fixedly connected with the end of the moving frame, an electromagnet fixedly connected with the inner wall of the fixed box, the electromagnet corresponding to the position of the iron sheet, and the electromagnet being connected with the sliding resistor.

[0014] The inner hole of the rubber tube is conical.

[0015] The collecting mechanism includes a collecting box fixedly connected with the end of the shaft rod, the top of the collecting box is provided with a suction hole, the outer side of the collecting box is communicated with a collecting pipe, a receiving box is installed on the inner wall of the tool holder, the receiving box is communicated with the collecting pipe, an air suction pump is installed on the inner wall of the receiving box, and the air suction pump is connected with the sliding resistor.

[0016] The inner wall of the receiving box is provided with a collecting bin, and the inner wall of the collecting bin is respectively provided with a solid-liquid separation filter screen and a waterproof air permeable membrane.

[0017] The present application at least has the following beneficial effects: When the present application is used, the material of the motor output shaft is selected according to the load, the rotating speed and the working condition requirement, so that the viscosity of the debris generated during the cutting of the motor output shafts with different materials is different, the debris viscosity in the semi-closed conical hole space after cutting is detected in advance by the debris cleaning mechanism, the gas-liquid ratio of the jet is dynamically adjusted by the debris cleaning mechanism according to the different debris viscosity, at the same time, the adsorption degree is synchronously adjusted by the collecting mechanism, so as to avoid that the iron filings are wound and scraped on the machined conical surface, thereby it is not necessary to regularly stop the machine to clean the iron filings in the conical hole, the machining and the debris cleaning are simultaneously performed, and the iron filings backflow pollution is reduced during batch machining. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole schematic view of the present application; Figure 2 It is a schematic view of the internal structure of the machine tool body of the present application; Figure 3 It is a schematic view of the tool holder structure of the present application; Figure 4 It is a schematic view of the internal structure of the receiving box of the present application; Figure 5 Figure is the schematic diagram of the shaft end structure of the present application; Figure 6 Figure is the schematic diagram of the adjustable taper hole drill bit structure of the present application; Figure 7 Figure is the schematic diagram of the main view of the fixed box structure of the present application; Figure 8 Figure is the schematic diagram of the fixed box structure of the present application; Figure 7 Figure is the enlarged schematic diagram of area A; Figure 9 Figure is the schematic diagram of the cross section structure of the detection piece of the present application.

[0019] In the figure: 1, machine tool main body; 2, chuck; 3, tool holder; 4, shaft; 5, adjustable taper hole drill bit; 50, tool bar; 51, tool head; 52, blade; 53, micro electric telescopic rod; 6, debris cleaning mechanism; 60, fixed box; 61, spray head; 62, detection piece; 63, air inlet pipe; 64, cooling liquid pipe; 65, micro air pump; 66, mixing piece; 67, air inlet hole; 68, air outlet hole; 69, detection bin; 610, guide groove; 611, eardrum; 612, transmission rod; 613, compression spring; 614, sliding rheostat; 615, mixing cavity; 616, infusion groove; 617, adjusting piece; 618, contraction section; 619, throat; 620, diffusion section; 621, rubber tube; 622, expansion ring; 623, moving frame; 624, return spring; 625, iron sheet; 626, electromagnet; 7, collection mechanism; 70, collection box; 71, suction hole; 72, collection pipe; 73, storage box; 74, air suction pump; 75, collection bin; 76, solid-liquid separation filter screen; 77, waterproof air permeable membrane. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] Please refer to Figures 1 to 9The application provides a technical scheme: a motor output shaft taper hole opening equipment, which comprises a machine tool body 1 and a chuck 2; further comprises a tool holder 3, the tool holder 3 is connected with the machine tool body 1, and the tool holder 3 is located outside the chuck 2; a shaft rod 4 is installed on the surface of the tool holder 3; an adjustable taper hole drill 5 is located at the end of the shaft rod 4, the adjustable taper hole drill 5 is connected with the machine tool body 1, and the adjustable taper hole drill 5 adjusts the cutting diameter; a scrap cleaning mechanism 6 is located at the end of the shaft rod 4, according to the scrap viscosity of different motor output shafts, the scrap cleaning mechanism 6 adjusts the cleaning strength of the scrap in the taper inner hole; a collection mechanism 7 is located at the end of the shaft rod 4, after the scrap cleaning mechanism 6 separates the scrap in the taper inner hole from the hole wall, the collection mechanism 7 collects the loose scrap.

[0022] In the application, the machine tool body 1 is a mature existing technology in the market, integrates a numerical control system, a cooling liquid tank and an electrical control module, provides an installation reference and power control for each mechanism, the chuck 2 adopts a three-jaw self-centering chuck 2 and is connected with a machine tool spindle, coaxial positioning and clamping of the motor output shaft are realized, the rotation accuracy of the shaft part in the machining process is ensured, the tool holder 3 is slidably connected to the guide rail of the machine tool body 1, the X / Z axis movement is controlled by the numerical control system, the surface of the tool holder 3 is reserved with an installation interface of the shaft rod 4, a cooling liquid channel and an electric wire pipeline are reserved in the shaft rod 4, and the power and medium transmission of each component are ensured.

[0023] In use, a worker clamps and positions the motor output shaft through the chuck 2, ensures that the shaft end machining surface is perpendicular to the spindle axis, inputs the machining parameters such as the taper ratio, the large end diameter of the taper hole, the small end diameter, the machining allowance, the spindle speed and the feed speed into the numerical control system, and installs various tools required for taper hole opening on the surface of the tool holder 3; When the taper hole is opened, the machine tool body 1 drives the tool holder 3 to move through the guide rail to cooperate with the opening of the motor output shaft, when the taper inner hole is machined, the tool holder 3 drives the adjustable taper hole drill 5 to enter the straight bottom hole of the motor output shaft, the numerical control system adjusts the telescopic amount of the adjustable taper hole drill 5 according to the taper parameters, and when the adjustable taper hole drill 5 cuts the hole wall, because the material of the motor output shaft is selected according to the load, the speed and the working condition requirement, the scrap viscosity generated during the cutting of the motor output shafts with different materials is different, the scrap viscosity under the cutting of the inner wall of the semi-closed taper hole space is detected in advance through the scrap cleaning mechanism 6, the gas-liquid ratio of the jet is dynamically adjusted according to the different scrap viscosities, meanwhile, the adsorption strength of the collection mechanism 7 is synchronously adjusted, the iron scraps are prevented from winding and scratching the machined taper surface, so that it is unnecessary to regularly stop and clean the iron scraps in the taper hole, the machining and scrap cleaning are simultaneously performed, and the iron scrap backflow pollution is reduced during batch machining; After the machining is completed, the numerical control system controls the tool to retreat radially (away from the inner wall of the taper hole) first, and then retreats axially (outward along the axis), so as to avoid scratching the machined taper surface.

[0024] The adjustable taper hole drill bit 5 comprises a tool shank 50 fixed at the end of the shaft 4, a tool head 51 slidably connected to the inner wall of the tool shank 50, a blade 52 fixedly connected to the end of the tool head 51 away from the tool shank 50, a micro electric telescopic rod 53 installed on the inner wall of the shaft 4, the telescopic end of the micro electric telescopic rod 53 being fixedly connected to the tool head 51, and the micro electric telescopic rod 53 being connected to the machine tool body 1.

[0025] The tool shank 50 is of a hollow structure, the inner wall of which is provided with a guide sliding groove, and the tool head 51 is in sliding fit with the sliding groove; the blade 52 is made of hard alloy material and is welded to the end of the tool head 51 (the blade angle is adapted to the taper machining requirement); the micro electric telescopic rod 53 is embedded in the inner wall of the shaft 4, the telescopic end thereof being rigidly connected to the tool head 51 and being in communication with the numerical control system of the machine tool body 1 through a signal line to realize electric signal adjustment of the cutting diameter (the adjustment range covers the diameters of the small end to the large end of the commonly used taper hole).

[0026] In use, the taper ratio parameters are preset by the numerical control system, the telescopic amount of the micro electric telescopic rod 53 is controlled, and when the tool head 51 slides along the sliding groove of the tool shank 50, the blade 52 is driven to move radially to change the cutting diameter.

[0027] The chip cleaning mechanism 6 comprises a fixed box 60 fixedly connected to the end of the shaft 4, the fixed box 60 being coaxially fixed to the end of the shaft 4 and having a gas-liquid mixing channel inside, the fixed box 60 being communicated at the top with a spray head 61, the inner wall of the spray head 61 being provided with a detection piece 62 for detecting the gas spraying pressure of the spray head 61, the spray head 61 being provided with a spray opening facing the blade 52 to ensure that the spray covers the entire machining area, the outer side of the fixed box 60 being communicated with an air inlet pipe 63 and a cooling liquid pipe 64, the cooling liquid pipe 64 being penetrated through the shaft 4 at the end away from the fixed box 60 and being connected to a cooling liquid tank inside the machine tool body 1, a micro air pump 65 being installed on the outer side of the tool holder 3, the output end of the micro air pump 65 being communicated with the air inlet pipe 63, the inner wall of the fixed box 60 being provided with a mixing piece 66, the mixing piece 66 being communicated with the air inlet pipe 63 and the cooling liquid pipe 64 respectively, and the mixing piece 66 adjusting the gas-liquid mixing ratio according to the gas spraying pressure detected by the detection piece 62.

[0028] In use, the micro air pump 65 continuously supplies air to the air inlet pipe 63, after the airflow passes through the mixing piece 66, the cooling liquid also enters the mixing piece 66 through the cooling liquid pipe 64, the mixing piece 66 mixes the gas and the cooling liquid to form a misty spray flow, and the misty spray flow is sprayed by the spray head 61 to the cutting area of the blade 52. And when the detection piece 62 detects the impact of the jet flow on the machining area, the material of the motor output shaft is selected according to the load, speed, and working condition requirements, so that the viscosity of the chips generated during cutting of the motor output shaft of different materials is different. For example, high-load and high-precision motor shafts (such as industrial motor shafts and servo motor shafts): 45 steel, 40Cr, 20CrMnTi, and other carbon steel / alloy structural steel are often used. Such materials have good plasticity and strong toughness, and the viscosity of the chips generated during cutting is high, in the form of continuous curled chips. Low-load and low-cost motor shafts (such as small household motor shafts): gray cast iron HT250, ductile cast iron QT450-10, and other cast iron materials are often used. The internal graphite phase of such materials cuts the metal matrix, and the plasticity is extremely poor. The viscosity of the chips generated during cutting is extremely low, in the form of irregular particles. If the viscosity of the chips on the inner wall of the conical hole is high, the metal will undergo severe plastic deformation during cutting, and the chips will be tightly adhered to the cutting edge, the inner wall of the conical hole, or the surface of the collection assembly. Ordinary high-pressure airflow cannot effectively strip it, so as the amount of chips increases, the resistance of the jet flow ejected by the nozzle 61 increases, the airflow is blocked, and the back pressure rises. Therefore, when the pressure detected by the detection piece 62 increases, the liquid content in the mixed gas controlled by the mixing piece 66 increases, the content of the cooling liquid in the jet flow ejected by the nozzle 61 increases, the cooling liquid quickly carries away a large amount of heat from the cutting area, and the cooling liquid forms an oil film on the contact surface between the chips and the hole wall and the cutting tool, reducing the frictional resistance and making it easier for the chips to be pushed by the airflow, thereby preventing the chips from winding around and becoming more tangled. If the viscosity of the chips on the inner wall of the conical hole is low, the fine chips generated during cutting can be directly blown away from the machining area by the jet flow ejected by the nozzle 61, preventing accumulation at the small end of the conical hole.

[0029] The detection piece 62 includes an air inlet hole 67, an air outlet hole 68, a detection chamber 69, and a guide groove 610 formed in the inner wall of the nozzle 61. The air inlet hole 67 is in communication with the fixed box 60, the air inlet hole 67 is in communication with the detection chamber 69, the guide groove 610 is in communication with the detection chamber 69, the air outlet hole 68 is in communication with the guide groove 610, a drum membrane 611 is installed on the inner wall of the detection chamber 69, the drum membrane 611 is fixedly connected to the outside of the transmission rod 612, a compression spring 613 is arranged on the outside of the transmission rod 612, the compression spring 613 is fixed to the inner wall of the detection chamber 69, a sliding rheostat 614 is installed on the outside of the nozzle 61, and the sliding piece of the sliding rheostat 614 is fixed to the transmission rod 612.

[0030] When the jet flow is ejected through the nozzle 61, the jet flow enters the detection chamber 69 through the air inlet hole 67, pushes the drum membrane 611 to deform, the jet flow in the detection chamber 69 enters the air outlet hole 68 through the guide groove 610, and is finally discharged. If the iron chips accumulate in the conical hole, the airflow flow resistance increases, the air pressure in the detection chamber 69 rises, the drum membrane 611 bulges outward, the transmission rod 612 pushes the sliding piece of the sliding rheostat 614 to move, and the resistance changes (the higher the air pressure, the smaller the resistance).

[0031] The mixing member 66 comprises a mixing cavity 615 formed in the inner wall of the fixed box 60, the mixing cavity 615 being in communication with the air inlet pipe 63, the inner wall of the fixed box 60 being provided with a liquid delivery groove 616, the two ends of the liquid delivery groove 616 being in communication with the cooling liquid pipe 64 and the mixing cavity 615 respectively, the inner wall of the liquid delivery groove 616 being provided with an adjusting member 617 for adjusting the flow passage diameter of the cooling liquid according to the resistance change of the sliding rheostat 614, the mixing cavity 615 comprising a converging section 618, a throat section 619 and a diverging section 620, the converging section 618 being in communication with the air inlet pipe 63, the liquid delivery groove 616 being in communication with the throat section 619 of the mixing cavity 615.

[0032] The mixing cavity 615 adopts a Venturi tube structure, the air flow is accelerated through the converging section 618, a negative pressure area is formed in the throat section 619, the cooling liquid in the cooling liquid pipe 64 is sucked into the liquid delivery groove 616, the diverging section 620 makes the gas-liquid fully mixed to form a mist or columnar jet flow; When the resistance of the sliding rheostat 614 decreases, the adjusting member 617 increases the flow passage diameter of the cooling liquid in the liquid delivery groove 616, so that the cooling liquid flow in the jet flow increases.

[0033] The adjusting member 617 comprises a rubber tube 621 fixedly connected with the liquid delivery groove 616 near one end of the throat section 619, an expansion ring 622 slidably connected with the inner wall of the rubber tube 621, a moving frame 623 fixedly connected with the outer side of the expansion ring 622, a return spring 624 fixedly connected with the outer side of the moving frame 623, the return spring 624 being fixed with the inner wall of the fixed box 60, the moving frame 623 being slidably and sealingly connected with the inner wall of the fixed box 60, an iron sheet 625 being fixedly connected with the end of the moving frame 623, an electromagnet 626 being fixedly connected with the inner wall of the fixed box 60, the electromagnet 626 corresponding to the position of the iron sheet 625, the electromagnet 626 being connected with the sliding rheostat 614, and the inner hole of the rubber tube 621 being tapered.

[0034] When the resistance of the sliding rheostat 614 changes, the input current of the electromagnet 626 changes synchronously: the smaller the resistance, the greater the current, and the stronger the magnetic force; the electromagnet 626 adsorbs the iron sheet 625 to drive the moving frame 623 to move, the expansion ring 622 slides along the tapered inner hole of the rubber tube 621, that is, when the magnetic force increases, the expansion ring 622 moves towards the throat section 619, the inner hole of the rubber tube 621 expands, and the cooling liquid flow increases; when the magnetic force decreases, the return spring 624 drives the moving frame 623 to reset, the moving frame 623 drives the expansion ring 622 to reset, the inner hole of the rubber tube 621 contracts, and the cooling liquid flow decreases.

[0035] The collecting mechanism 7 comprises a collecting box 70 fixedly connected with the end of the shaft 4, an attracting hole 71 is formed in the top of the collecting box 70, a collecting pipe 72 is communicated with the outside of the collecting box 70, a containing box 73 is installed on the inner wall of the knife holder 3, the containing box 73 is communicated with the collecting pipe 72, an air suction pump 74 is installed on the inner wall of the containing box 73, the air suction pump 74 is connected with the sliding rheostat 614, a collecting bin 75 is formed in the inner wall of the containing box 73, a solid-liquid separation filter screen 76 and a waterproof air permeable film 77 are respectively installed on the inner wall of the collecting bin 75.

[0036] The air suction pump 74 is connected with the sliding rheostat 614, when the resistance value of the sliding rheostat 614 is reduced, the power of the air suction pump 74 is increased, the attracting hole 71 of the collecting box 70 forms strong negative pressure, the gas-liquid mixture containing iron filings in the conical hole is sucked into the collecting pipe 72, after entering the containing box 73, the solid-liquid separation filter screen 76 intercepts the iron filings, the waterproof air permeable film 77 prevents the cooling liquid from penetrating into the air suction pump 74, so that the separation and recovery of the iron filings and the cooling liquid are realized.

[0037] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for drilling a tapered hole in a motor output shaft, comprising: Machine tool body and chuck; Its characteristic is that it further includes a tool holder, which is connected to the machine tool body and is located outside the chuck; A shaft, which is mounted on the surface of the tool holder; An adjustable taper hole drill bit is located at the end of a shaft and is connected to the machine tool body. The adjustable taper hole drill bit adjusts the cutting diameter. A debris cleaning mechanism is located at the end of a shaft. The debris cleaning mechanism adjusts the cleaning force on the debris in the tapered inner hole according to the debris viscosity of different motor output shafts. The collection mechanism is located at the end of the shaft. After the debris cleaning mechanism separates the debris in the tapered inner hole from the hole wall, the collection mechanism collects the loose debris.

2. The taper hole drilling device for the motor output shaft according to claim 1, characterized in that: The adjustable taper hole drill bit includes a tool holder, which is fixed to the end of a shaft. A tool head is slidably connected to the inner wall of the tool holder. An insert is fixedly connected to the end of the tool head away from the tool holder. A miniature electric telescopic rod is installed on the inner wall of the shaft. The telescopic end of the miniature electric telescopic rod is fixedly connected to the tool head. The miniature electric telescopic rod is connected to the machine tool body.

3. The taper hole drilling device for the motor output shaft according to claim 2, characterized in that: The debris cleaning mechanism includes a fixed box fixedly connected to the end of the shaft. A nozzle is connected to the top of the fixed box. A detection element for detecting the jet pressure of the nozzle is provided on the inner wall of the nozzle. The nozzle nozzle faces the cutting tool. An air inlet pipe and a coolant pipe are connected to the outside of the fixed box. The end of the coolant pipe away from the fixed box passes through the shaft and is connected to the coolant tank inside the machine tool body. A miniature air pump is installed on the outside of the tool holder. The output end of the miniature air pump is connected to the air inlet pipe. A mixing element is provided on the inner wall of the fixed box. The mixing element is connected to both the air inlet pipe and the coolant pipe. According to the jet pressure detected by the detection element, the mixing element adjusts the gas-liquid mixing ratio.

4. The taper hole drilling device for the motor output shaft according to claim 3, characterized in that: The detection component includes an air inlet, an exhaust outlet, a detection chamber, and a guide groove formed on the inner wall of the nozzle. The air inlet is connected to the fixed box, the air inlet is connected to the detection chamber, the guide groove is connected to the detection chamber, and the exhaust outlet is connected to the guide groove. A diaphragm is installed on the inner wall of the detection chamber, and a transmission rod is fixedly connected to the outer side of the diaphragm. A compression spring is provided on the outer side of the transmission rod, and the compression spring is fixed to the inner wall of the detection chamber. A sliding rheostat is installed on the outer side of the nozzle, and the slider of the sliding rheostat is fixed to the transmission rod.

5. The taper hole drilling device for the motor output shaft according to claim 4, characterized in that: The mixing component includes a mixing chamber formed in the inner wall of a fixed box, which is connected to an air inlet pipe. A liquid delivery tank is formed in the inner wall of the fixed box, and both ends of the liquid delivery tank are connected to a coolant pipe and the mixing chamber, respectively. An adjusting component is provided in the inner wall of the liquid delivery tank to adjust the inner diameter of the coolant flow according to the resistance change of the sliding rheostat.

6. The taper hole drilling device for the motor output shaft according to claim 5, characterized in that: The mixing chamber includes a contraction section, a throat, and a diffusion section. The contraction section is connected to the air inlet pipe, and the infusion tank is connected to the throat of the mixing chamber.

7. The taper hole drilling device for the motor output shaft according to claim 5, characterized in that: The adjusting component includes a rubber tube fixedly connected to one end of the infusion tank near the throat. An expansion ring is slidably connected to the inner wall of the rubber tube. A movable frame is fixedly connected to the outer side of the expansion ring. A return spring is fixedly connected to the outer side of the movable frame. The return spring is fixed to the inner wall of the fixed box. The movable frame is slidably and sealingly connected to the inner wall of the fixed box. An iron plate is fixedly connected to the end of the movable frame. An electromagnet is fixedly connected to the inner wall of the fixed box. The electromagnet and the iron plate are positioned correspondingly. The electromagnet is connected to a sliding rheostat.

8. The taper hole drilling device for the motor output shaft according to claim 7, characterized in that: The inner hole of the rubber tube is conical.

9. The taper hole drilling device for the motor output shaft according to claim 5, characterized in that: The collecting mechanism includes a collecting box fixedly connected to the end of the shaft. The top of the collecting box has an suction hole. A collecting pipe is connected to the outside of the collecting box. A storage box is installed on the inner wall of the tool holder. The storage box is connected to the collecting pipe. An air pump is installed on the inner wall of the storage box. The air pump is connected to a sliding rheostat.

10. The taper hole drilling device for the motor output shaft according to claim 9, characterized in that: The inner wall of the storage box is provided with a collection compartment, and the inner wall of the collection compartment is respectively installed with a solid-liquid separation filter and a waterproof and breathable membrane.

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