Drilling and tapping equipment for motor shell machining

Abstract

The invention provides drilling and tapping equipment for machining a motor shell, and relates to the technical field of drilling and tapping, and the drilling and tapping equipment comprises a multifunctional linkage mechanism and a liquid pressure intensity control mechanism, the flow guide sleeve is installed at a shaft body of the hollow rotating shaft through a bearing and a sealing ring and is of a hollow structure, the movable valve plate is placed in the flow guide sleeve and can control the flowing state of liquid, and the second spiral spring generates an elastic damping effect on the movable valve plate. The drilling and tapping device can be matched with a hydraulic system to work, drilling and tapping work can be conducted on a motor shell, in addition, liquid in the same direction is used for conducting the axial supply function and the rotation transmission function on a drill bit or a screw tap, and therefore the effective utilization rate of a power source is increased; and the function of controlling the torsional strength is achieved, so that the phenomenon of fatal damage of the drill bit or the screw tap caused by torsional resistance overload is prevented.

Description

Technical Field

[0001] This invention relates to the field of drilling and tapping technology, and in particular to a drilling and tapping device for machining motor housings. Background Technology

[0002] When machining the motor housing, several threaded holes need to be machined on the end face of the motor housing so that bolts can be used to connect the motor housing and the motor end cover when assembling the motor end cover later. A drilling machine can be used to machine the threaded holes on the end face of the motor housing.

[0003] For example, Chinese patent publication number CN119870990B discloses "A drilling and tapping device for machining motor housings." Its main structure includes a drilling machine body, a motor, a first pulley, a second pulley, and a transmission belt. A drive shaft is fixedly connected to the inner wall of the second pulley. This drilling and tapping device for machining motor housings uses two clamping assemblies and a reversing tube. During use, a drill bit and a tap can be mounted on the two clamping assemblies respectively. First, the drill bit is used to make a hole. After drilling, the reversing tube moves the two clamping assemblies to switch positions, allowing the tap to be moved to the drill bit's position for tapping. This allows drilling and tapping to be completed in one operation, reducing the need for clamping during motor housing machining by at least one setup, thus improving the efficiency of the device.

[0004] In actual operation, the drilling and tapping equipment used for motor housing processing has a rigid transmission relationship between the drive motor rotation and the drill bit and tap. During the operation of the drill bit and tap, fatal damage to the drill bit or tap is easily caused by torsional resistance overload. Its protective performance for the drill bit or tap is relatively poor during use. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a drilling and tapping device for machining motor housings, which solves the technical problems of the device being prone to fatal damage to the drill bit or tap due to torsional resistance overload, and the device having poor protection performance for the drill bit or tap during use.

[0006] In a first aspect, an embodiment of the present invention provides a drilling and tapping device for machining motor housings, comprising: an operating table, a top beam located directly above the operating table, and a drive motor fixedly mounted on the upper surface of the top beam via a motor mounting bracket; a multi-functional linkage mechanism, the structure of which includes a hollow rotating shaft that can rotate with the rotor of the drive motor and has a hollow internal structure, a piston plate placed inside the hollow rotating shaft and capable of downward displacement under hydraulic pressure, a drive disc and a driven disc that can move longitudinally with the piston plate and rotate with the hollow rotating shaft, and a lower linkage shaft that can move with the driven disc and drive the drill bit and tap to move; and a liquid pressure control mechanism, the structure of which includes a flow guide sleeve that is mounted on the hollow rotating shaft body via bearings and a sealing ring and has a hollow internal structure, a movable valve plate placed inside the flow guide sleeve and capable of controlling the liquid flow state, and a second helical spring that produces an elastic damping effect on the movable valve plate.

[0007] Preferably, the multi-functional linkage mechanism further includes a rotor mounting groove disposed at the top of the hollow shaft and fixedly installed at the end of the drive motor rotor. The hollow shaft has a limiting flow cavity inside, which communicates with the outside through three annular array-arranged No. 1 liquid holes. The hollow shaft has an upper movable cavity at the bottom of the limiting flow cavity, a No. 1 rod hole at the bottom of the upper movable cavity, a lower movable cavity at the bottom of the No. 1 rod hole, and a No. 2 rod hole at the bottom of the lower movable cavity. A piston plate capable of moving axially is placed inside the upper movable cavity, and the bottom of the piston plate is provided with a... An integrated upper linkage shaft that passes through the first rod hole has a drive disc fixedly mounted at its bottom end inside the lower movable cavity. The lower surface of the drive disc has multiple hemispherical structures integrated with it and arranged in a circular array. The second rod hole is passed through by a lower linkage shaft. The top end of the lower linkage shaft has a driven disc integrated with it and located inside the lower movable cavity. The upper surface of the driven disc has multiple hemispherical slots for holding the hemispherical structures. A first helical spring in a compressed state is sleeved around the rod body inside the lower movable cavity. The bottom end of the lower linkage shaft is connected to the drill bit and tap via a coupling.

[0008] Preferably, the cross-sectional shape of the lower movable cavity is consistent with the cross-sectional shape of the drive disk, both being polygonal structures, and the structural dimensions of the lower movable cavity cross-section are adapted to the structural dimensions of the drive disk cross-section.

[0009] Preferably, the structural radius of the hemispherical slot is adapted to the structural radius of the hemispherical structure, and the depth of the hemispherical slot is less than the structural radius of the hemispherical structure.

[0010] Preferably, the liquid pressure control mechanism further includes an annular liquid flow cavity disposed inside the guide sleeve and connected to the first liquid hole. The central hole of the guide sleeve is mounted on the shaft of the hollow rotating shaft via a bearing and a sealing ring. The outer circumferential surface of the guide sleeve is provided with a pipe docking channel connecting to the annular liquid flow cavity. The outer circumferential surface of the guide sleeve is provided with a horizontal outer shell integrally formed with it. The interior of the horizontal outer shell is provided with a horizontal movable cavity. One end of the horizontal movable cavity is provided with a second liquid hole connecting to the annular liquid flow cavity. The other end of the horizontal movable cavity is provided with a third liquid hole connecting to the external space. A movable valve plate capable of moving along its axial direction is placed inside the horizontal movable cavity. The end of the movable valve plate facing the second liquid hole is provided with an annular embedding groove with a concave structure. A sealing ring is embedded inside the annular embedding groove. A second helical spring in a compressed state is placed on the other side of the movable valve plate. The circumferential surface of the movable valve plate is provided with multiple concave liquid flow grooves.

[0011] Preferably, the elastic strength of the second helical spring in its initial state is the same as the elastic strength of the first helical spring when its remaining compression stroke is equal to the structural diameter of the hemispherical structure.

[0012] Preferably, the depth of the annular embedded groove is less than the thickness of the sealing ring, the structural radius of the inner ring of the sealing ring is greater than the structural radius of the second liquid hole, and the structural radius of the outer ring of the sealing ring is greater than the distance between the axis of the movable valve plate and the liquid flow groove.

[0013] Preferably, it also includes a working height adjustment mechanism, the structure of which includes a first external thread rod and a second external thread rod fixedly connected to the operating table and the top crossbeam, a longitudinal threaded sleeve capable of changing the distance between the first external thread rod and the second external thread rod, and a polygonal limiting rod capable of preventing relative rotation between the first external thread rod and the second external thread rod.

[0014] Preferably, the working height adjustment mechanism further includes a polygonal limiting cavity. One end of the longitudinal threaded sleeve is provided with a first internal threaded cavity with a concave structure, and the other end of the longitudinal threaded sleeve is provided with a second internal threaded cavity with a concave structure. The rod body of the first external threaded rod is installed inside the first internal threaded cavity through the first thread structure, and the rod body of the second external threaded rod is installed inside the second internal threaded cavity through the second thread structure. The first and second external threaded rods are provided with polygonal limiting cavities with concave structures at their opposite ends. A polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the longitudinal threaded sleeve. One end of the first external threaded rod is provided with a first connecting plate integrally formed with it and fixedly connected to the upper surface of the operating table. One end of the second external threaded rod is provided with a second connecting plate integrally formed with it and fixedly connected to the bottom surface of the top crossbeam. The cross-sectional shape of the polygonal limiting cavity is consistent with the cross-sectional shape of the polygonal limiting rod, both being polygonal structures, and the cross-sectional dimensions of the polygonal limiting cavity match the cross-sectional dimensions of the polygonal limiting rod.

[0015] Preferably, the first thread structure includes an internal thread structure disposed inside the first internal thread cavity and an external thread structure disposed on the first external thread rod body, and the second thread structure includes an internal thread structure disposed inside the second internal thread cavity and an external thread structure disposed on the second external thread rod body, and the helical direction of the first thread structure is opposite to the helical direction of the second thread structure.

[0016] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this embodiment of the invention, in conjunction with a hydraulic system, drilling and tapping operations can be performed on the motor housing. Furthermore, the device utilizes fluid in the same direction to provide both axial supply and rotational transmission to the drill bit or tap, thereby improving the effective utilization rate of the power source. In addition, the device can control the torsional strength while providing axial supply, thereby preventing fatal damage to the drill bit or tap due to torsional resistance overload. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0018] Figure 1 A perspective view provided for an embodiment of the present invention; Figure 2A perspective cross-sectional view provided for an embodiment of the present invention; Figure 3 A perspective view of the multifunctional linkage mechanism provided in an embodiment of the present invention; Figure 4 A perspective cross-sectional view of the multifunctional linkage mechanism provided in an embodiment of the present invention; Figure 5 A perspective view of the liquid pressure control mechanism provided in an embodiment of the present invention; Figure 6 A perspective cross-sectional view of the liquid pressure control mechanism provided in an embodiment of the present invention; Figure 7 A perspective view of the working height adjustment mechanism provided in an embodiment of the present invention; Figure 8 A three-dimensional cross-sectional view of the working height adjustment mechanism provided in an embodiment of the present invention.

[0019] The components include: 1. Operating platform; 2. Top crossbeam; 3. Motor mounting base; 4. Drive motor; 5. Multifunctional linkage mechanism; 51. Hollow rotating shaft; 52. Rotor mounting slot; 53. Limiting flow cavity; 54. No. 1 liquid hole; 55. Upper movable cavity; 56. No. 1 rod hole; 57. Lower movable cavity; 58. No. 2 rod hole; 59. Piston plate; 510. Upper linkage shaft; 511. Drive disc; 512. Driven disc; 513. Hemispherical slot; 514. Hemispherical structure; 515. Lower linkage shaft; 516. No. 1 helical spring; 6. Liquid pressure control mechanism; 61. Flow guide sleeve; 62. Annular liquid flow cavity. 63. Pipe connection channel; 64. Liquid hole No. 2; 65. Horizontal movable cavity; 66. Liquid hole No. 3; 67. Movable valve plate; 68. Annular embedded groove; 69. Sealing ring; 610. Liquid flow channel; 611. Helical spring No. 2; 612. Horizontal outer shell; 7. Working height adjustment mechanism; 71. Longitudinal threaded sleeve; 72. Internal threaded cavity No. 1; 73. Internal threaded cavity No. 2; 74. Threaded structure No. 1; 75. Threaded structure No. 2; 76. External threaded rod No. 1; 77. External threaded rod No. 2; 78. Connecting plate No. 1; 79. Connecting plate No. 2; 710. Polygonal limiting cavity; 711. Polygonal limiting rod. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this invention.

[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.

[0023] Please see Figure 1 and Figure 2 A drilling and tapping device for machining motor housings includes an operating table 1, a top crossbeam 2 located directly above the operating table 1, and a drive motor 4 fixedly mounted on the upper surface of the top crossbeam 2 via a motor mounting base 3. First, the drill bit is connected to the bottom end of the lower linkage shaft 515 via a coupling, and then the drive motor 4 is started to drill the motor housing. After the drilling is completed, the drill bit is removed, and then a tap is installed to perform tapping.

[0024] To implement the linkage and feed functions, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A multi-functional linkage mechanism 5 needs to be set up. Its structure includes a hollow rotating shaft 51 that can rotate with the rotor of the drive motor 4 and has a hollow internal structure, a piston plate 59 placed inside the hollow rotating shaft 51 and capable of downward displacement under hydraulic pressure, a drive plate 511 and a driven plate 512 that can move longitudinally with the piston plate 59 and rotate with the hollow rotating shaft 51, and a lower linkage shaft 515 that can move with the driven plate 512 and drive the drill bit and tap to move.

[0025] In this embodiment, a hydraulic system is used in conjunction with the system. The liquid circuit and the pipeline connection channel 63 of the liquid system are connected via hydraulic pipelines. When the rotor drives the hollow shaft 51 to rotate, since the cross-sectional shape of the lower movable cavity 57 is consistent with the cross-sectional shape of the drive disk 511 (both are polygonal structures), and the cross-sectional dimensions of the lower movable cavity 57 are compatible with those of the drive disk 511, the lower linkage shaft 515 will drive the drill bit or tap to rotate, thereby achieving a linkage effect. During this process, liquid is injected into the annular liquid flow cavity 62 through the hydraulic system. The liquid then enters the upper movable cavity 55 through the first liquid hole 54 and the limiting flow cavity 53, generating downward pressure on the piston plate 59. Under this pressure... The piston plate 59 indirectly causes the drive plate 511 and the driven plate 512 to move downwards, compressing the first helical spring 516, which in turn drives the drill bit and tap to move downwards to achieve the feeding function. At the same time, when the torsional resistance of the drill bit and tap during operation is greater than the linkage strength caused by the first helical spring 516, the hemispherical structure 514 will disengage from the hemispherical slot 513, preventing the driven plate 512 from further increasing the torsional strength, thereby preventing fatal damage to the drill bit or tap due to overload of torsional resistance. Of course, during operation, the remaining compression stroke of the first helical spring 516 must be greater than the structural radius of the hemispherical structure 514, otherwise the hemispherical structure 514 cannot disengage from the hemispherical slot 513.

[0026] For details regarding the structure of the multi-functional linkage mechanism 5, please refer to [link / reference]. Figure 3 and Figure 4It also includes a rotor mounting groove 52 located at the top of the hollow shaft 51 and fixedly installed at the rotor end of the drive motor 4. The hollow shaft 51 has a limiting flow cavity 53 inside, which communicates with the outside through three annular array of first liquid holes 54. The hollow shaft 51 has an upper movable cavity 55 at the bottom of the limiting flow cavity 53, and a first rod hole 56 at the bottom of the upper movable cavity 55. The upper movable cavity 55 is provided with a lower movable cavity 57. The hollow rotating shaft 51 has a second rod hole 58 at the bottom end of the lower movable cavity 57. The upper movable cavity 55 houses a piston plate 59 that can move along its axial direction. The bottom of the piston plate 59 is provided with an upper linkage shaft 510 that is integral with it and passes through the first rod hole 56. The bottom end of the upper linkage shaft 510 is fixedly installed with a drive disk 511 located inside the lower movable cavity 57. The lower surface of the drive disk 511 is provided with multiple integral structures with it. Furthermore, the hemispherical structure 514 is arranged in a ring array. The second rod hole 58 is penetrated by a lower linkage shaft 515. The top of the lower linkage shaft 515 is provided with a driven disk 512, which is integral with it and located inside the lower movable cavity 57. The upper surface of the driven disk 512 is provided with multiple hemispherical slots 513 for holding the hemispherical structure 514. A first helical spring 516 in a compressed state is placed around the rod body inside the lower movable cavity 57 of the lower linkage shaft 515. The bottom end of the lower linkage shaft 515 is connected to the drill bit and tap through a coupling. The cross-sectional shape of the lower movable cavity 57 is consistent with the cross-sectional shape of the drive disk 511, both being polygonal structures. The cross-sectional dimensions of the lower movable cavity 57 are adapted to the cross-sectional dimensions of the drive disk 511. The structural radius of the hemispherical slot 513 is adapted to the structural radius of the hemispherical structure 514, and the depth of the hemispherical slot 513 is less than the structural radius of the hemispherical structure 514.

[0027] To control the maximum intensity of liquid flow and thus prevent injection pressure overload, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 5 and Figure 6 A liquid pressure control mechanism 6 needs to be set up. Its structure includes a flow guide sleeve 61 with a hollow structure installed on the shaft of the hollow rotating shaft 51 through a bearing and a sealing ring, a movable valve plate 67 placed inside the flow guide sleeve 61 and capable of controlling the liquid flow state, and a second helical spring 611 that produces an elastic damping effect on the movable valve plate 67.

[0028] In this embodiment, when the hydraulic system is working, the liquid will exert a directional force on the movable valve plate 67. When this force is greater than the elastic strength of the second helical spring 611, since the elastic strength of the second helical spring 611 in the initial state is the same as the elastic strength of the first helical spring 516 when the remaining compression stroke is the diameter of the hemispherical structure 514, in other words, when the first helical spring 516 is compressed to the rated position of the compressible stroke, it will cause the second helical spring 611 to be displaced in a directional manner. The liquid will then be discharged outward in time through the second liquid hole 64, the movement gap of the movable valve plate 67, the horizontal movable cavity 65 and the third liquid hole 66, thereby achieving pressure relief and preventing the occurrence of injection pressure overload.

[0029] For details regarding the specific structure of the liquid pressure control mechanism 6, please refer to [link / reference]. Figure 5 and Figure 6 It also includes an annular liquid flow cavity 62 disposed inside the guide sleeve 61 and connected to the first liquid hole 54. The guide sleeve 61 is mounted to the shaft of the hollow rotating shaft 51 at its central hole via a bearing and a sealing ring. The outer circumference of the guide sleeve 61 is provided with a pipe docking channel 63 connecting to the annular liquid flow cavity 62. The outer circumference of the guide sleeve 61 is provided with a horizontal outer shell 612 integrally formed with it. The interior of the horizontal outer shell 612 is provided with a horizontal movable cavity 65. One end of the horizontal movable cavity 65 is provided with a second liquid hole 64 connecting to the annular liquid flow cavity 62, and the other end of the horizontal movable cavity 65 is provided with a third liquid hole 66 connecting to the external space. A movable valve plate 67 capable of moving along its axial direction is placed inside the horizontal movable cavity 65. The movable valve plate 67 faces the second liquid hole 54. The end of the liquid hole 64 is provided with an annular embedded groove 68 with a concave structure. A sealing ring 69 is embedded inside the annular embedded groove 68. A second helical spring 611 in a compressed state is placed on the other side of the movable valve plate 67. The circumferential surface of the movable valve plate 67 is provided with multiple concave liquid flow grooves 610. The elastic strength of the second helical spring 611 in the initial state is the same as the elastic strength of the first helical spring 516 when the remaining compression stroke is the diameter of the hemispherical structure 514. The depth of the annular embedded groove 68 is less than the thickness of the sealing ring 69. The structural radius of the inner ring of the sealing ring 69 is greater than the structural radius of the second liquid hole 64, and the structural radius of the outer ring of the sealing ring 69 is greater than the distance between the axis of the movable valve plate 67 and the liquid flow groove 610.

[0030] To enable the adjustment of the working height, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 7 and Figure 8A working height adjustment mechanism 7 needs to be set up, the structure of which includes a first external thread rod 76 and a second external thread rod 77 fixedly connected to the operating table 1 and the top crossbeam 2, a longitudinal threaded sleeve 71 that can change the distance between the first external thread rod 76 and the second external thread rod 77, and a polygonal limit rod 711 that can prevent the first external thread rod 76 and the second external thread rod 77 from rotating relative to each other.

[0031] In this embodiment, the directional rotation of the longitudinal threaded sleeve 71, due to the threaded connection and the opposite threaded structure, and under the action of the polygonal limiting rod 711, will change the distance between the first external thread rod 76 and the second external thread rod 77, thereby controlling the longitudinal distance between the operating table 1 and the top crossbeam 2, and thus realizing the function of adjusting the working height.

[0032] For details regarding the specific structure of the working height adjustment mechanism 7, please refer to [link / reference]. Figure 7 and Figure 8 It also includes a polygonal limiting cavity 710. One end of the longitudinal threaded sleeve 71 is provided with a first internal threaded cavity 72 with an inwardly concave structure, and the other end of the longitudinal threaded sleeve 71 is provided with a second internal threaded cavity 73 with an inwardly concave structure. The rod body of the first external threaded rod 76 is installed inside the first internal threaded cavity 72 through a first threaded structure 74, and the rod body of the second external threaded rod 77 is installed inside the second internal threaded cavity 73 through a second threaded structure 75. The first external threaded rod 76 and the second external threaded rod 77 are provided with polygonal limiting cavities 710 with inwardly concave structures at their opposite ends. A polygonal limiting rod 711 is fixedly installed at the center of the longitudinal threaded sleeve 71 and inserted into the polygonal limiting cavity 710. One end of the first external threaded rod 76 is provided with a first connecting plate 7, which is integral with it and fixedly connected to the upper surface of the operating table 1. 8. One end of the second external thread rod 77 is provided with a second connecting plate 79, which is integral with it and fixedly connected to the bottom surface of the top crossbeam 2. The cross-sectional shape of the polygonal limiting cavity 710 is consistent with the cross-sectional shape of the polygonal limiting rod 711, both being polygonal structures. The cross-sectional dimensions of the polygonal limiting cavity 710 match the cross-sectional dimensions of the polygonal limiting rod 711. The first thread structure 74 includes an internal thread structure disposed inside the first internal thread cavity 72 and an external thread structure disposed on the rod body of the first external thread rod 76. The second thread structure 75 includes an internal thread structure disposed inside the second internal thread cavity 73 and an external thread structure disposed on the rod body of the second external thread rod 77. The helical direction of the first thread structure 74 is opposite to the helical direction of the second thread structure 75.

[0033] In use, the drill bit is connected to the bottom end of the lower linkage shaft 515 via a coupling, and then the drive motor 4 is started to drill a hole in the motor housing. After drilling is completed, the drill bit is removed, and a tap is installed for tapping. This is used in conjunction with a hydraulic system, where the liquid circuit and pipeline connection channel 63 are connected via hydraulic pipes. When the rotor drives the hollow shaft 51 to rotate, because the cross-sectional shape of the lower movable cavity 57 is consistent with the cross-sectional shape of the drive disk 511 (both are polygonal structures), and the cross-sectional dimensions of the lower movable cavity 57 are compatible with those of the drive disk 511, the lower linkage shaft 515 will drive the drill bit or tap to rotate, thus achieving a linkage effect. During this process, the hydraulic system... Liquid is injected into the annular liquid flow chamber 62, and the liquid enters the upper movable chamber 55 through the first liquid hole 54 and the limiting flow chamber 53, exerting downward pressure on the piston plate 59. Under this pressure, the piston plate 59 indirectly causes the drive plate 511 and the driven plate 512 to move downward, compressing the first helical spring 516, thereby driving the drill bit and tap to move downward to achieve the feeding function. At the same time, when the torsional resistance of the drill bit and tap during operation is greater than the linkage strength caused by the first helical spring 516, the hemispherical structure 514 will disengage from the hemispherical slot 513, so that the driven plate 512 will not further increase the torsional strength, thereby preventing fatal damage to the drill bit or tap due to torsional resistance overload.

[0034] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the preferred embodiments, while those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling and tapping device for machining motor housings, comprising an operating table, a top beam located directly above the operating table, and a drive motor fixedly mounted on the upper surface of the top beam via a motor mounting bracket, characterized in that: It also includes, The multi-functional linkage mechanism includes a hollow rotating shaft that can rotate with the rotor of the drive motor and has a hollow internal structure, a piston plate placed inside the hollow rotating shaft and capable of downward displacement under hydraulic pressure, a drive disc and a driven disc that can move longitudinally with the piston plate and rotate with the hollow rotating shaft, and a lower linkage shaft that can move with the driven disc and drive the drill bit and tap to move. And a liquid pressure control mechanism, the structure of which includes a flow guide sleeve installed on the hollow rotating shaft body via bearings and a sealing ring and having a hollow internal structure, a movable valve plate placed inside the flow guide sleeve and capable of controlling the liquid flow state, and a second helical spring that produces an elastic damping effect on the movable valve plate.

2. The drilling and tapping equipment for machining motor housings according to claim 1, characterized in that: The multi-functional linkage mechanism also includes a rotor mounting groove located at the top of the hollow shaft and fixedly installed at the end of the drive motor rotor. The hollow shaft has a limiting flow cavity inside, which is connected to the outside through three annular array-arranged liquid holes. The hollow shaft has an upper movable cavity at the bottom of the limiting flow cavity, a rod hole at the bottom of the upper movable cavity, a lower movable cavity at the bottom of the rod hole, and a rod hole at the bottom of the lower movable cavity. A piston plate capable of moving axially is placed inside the upper movable cavity, and an integral part of the piston plate is located at its bottom. The upper linkage shaft has a structure that passes through the first rod hole. The bottom end of the upper linkage shaft is fixedly installed with a drive disc located inside the lower movable cavity. The lower surface of the drive disc is provided with multiple hemispherical structures integrated with it and arranged in a circular array. The second rod hole is passed through by a lower linkage shaft. The top end of the lower linkage shaft is provided with a driven disc integrated with it and located inside the lower movable cavity. The upper surface of the driven disc is provided with multiple hemispherical slots for holding the hemispherical structures. A first helical spring in a compressed state is sleeved around the rod body inside the lower movable cavity. The bottom end of the lower linkage shaft is connected to the drill bit and tap through a coupling.

3. The drilling and tapping equipment for machining motor housings according to claim 2, characterized in that: The cross-sectional shape of the lower movable cavity is consistent with that of the cross-sectional shape of the drive disk, both being polygonal structures, and the structural dimensions of the lower movable cavity cross-section are adapted to those of the drive disk cross-section.

4. The drilling and tapping equipment for machining motor housings according to claim 3, characterized in that: The structural radius of the hemispherical slot is adapted to the structural radius of the hemispherical structure, and the depth of the hemispherical slot is less than the structural radius of the hemispherical structure.

5. A drilling and tapping device for machining motor housings according to claim 4, characterized in that: The liquid pressure control mechanism also includes an annular liquid flow cavity disposed inside the guide sleeve and connected to the first liquid hole. The central hole of the guide sleeve is mounted on the shaft of the hollow rotating shaft through a bearing and a sealing ring. The outer circumferential surface of the guide sleeve is provided with a pipe docking channel connecting to the annular liquid flow cavity. The outer circumferential surface of the guide sleeve is provided with a horizontal outer shell integrally formed with it. The interior of the horizontal outer shell is provided with a horizontal movable cavity. One end of the horizontal movable cavity is provided with a second liquid hole connected to the annular liquid flow cavity, and the other end of the horizontal movable cavity is provided with a third liquid hole connected to the external space. A movable valve plate capable of moving along its axial direction is placed inside the horizontal movable cavity. The end of the movable valve plate facing the second liquid hole is provided with an annular embedded groove with a concave structure. A sealing ring is embedded inside the annular embedded groove. A second helical spring in a compressed state is placed on the other side of the movable valve plate. The circumferential surface of the movable valve plate is provided with multiple concave liquid flow grooves.

6. A drilling and tapping device for machining motor housings according to claim 5, characterized in that: The elastic strength of the second helical spring in its initial state is the same as that of the first helical spring when its remaining compression stroke is equal to the structural diameter of the hemispherical structure.

7. A drilling and tapping device for machining motor housings according to claim 6, characterized in that: The depth of the annular embedded groove is less than the thickness of the sealing ring, the structural radius of the inner ring of the sealing ring is greater than the structural radius of the second liquid hole, and the structural radius of the outer ring of the sealing ring is greater than the distance between the axis of the movable valve plate and the liquid flow groove.

8. A drilling and tapping device for machining motor housings according to any one of claims 2-7, characterized in that: It also includes a working height adjustment mechanism, the structure of which includes a No. 1 external thread rod and a No. 2 external thread rod fixedly connected to the operating table and the top crossbeam, a longitudinal threaded sleeve that can change the distance between the No. 1 external thread rod and the No. 2 external thread rod, and a polygonal limit rod that can prevent the No. 1 external thread rod and the No. 2 external thread rod from rotating relative to each other.

9. A drilling and tapping device for machining motor housings according to claim 8, characterized in that: The working height adjustment mechanism also includes a polygonal limiting cavity. One end of the longitudinal threaded sleeve is provided with a first internal threaded cavity with a concave structure, and the other end of the longitudinal threaded sleeve is provided with a second internal threaded cavity with a concave structure. The rod body of the first external threaded rod is installed inside the first internal threaded cavity through the first thread structure, and the rod body of the second external threaded rod is installed inside the second internal threaded cavity through the second thread structure. The first and second external threaded rods are provided with polygonal limiting cavities with concave structures at their opposite ends. A polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the longitudinal threaded sleeve. One end of the first external threaded rod is provided with a first connecting plate integrally formed with it and fixedly connected to the upper surface of the operating table. One end of the second external threaded rod is provided with a second connecting plate integrally formed with it and fixedly connected to the bottom surface of the top crossbeam. The cross-sectional shape of the polygonal limiting cavity is consistent with the cross-sectional shape of the polygonal limiting rod, both being polygonal structures, and the cross-sectional dimensions of the polygonal limiting cavity match the cross-sectional dimensions of the polygonal limiting rod.

10. A drilling and tapping device for machining motor housings according to claim 9, characterized in that: The first thread structure includes an internal thread structure disposed inside the first internal thread cavity and an external thread structure disposed on the first external thread rod body. The second thread structure includes an internal thread structure disposed inside the second internal thread cavity and an external thread structure disposed on the second external thread rod body, and the helical direction of the first thread structure is opposite to the helical direction of the second thread structure.

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