A high-efficiency drilling device for electric motor rotor

Abstract

The present invention relates to a motor rotor high-efficiency drilling device applied to the field of drilling equipment, which can directly save the process of manual marking before drilling, and the drilling process is automatically completed without manual operation. Compared with the prior art, the drilling accuracy and drilling efficiency are greatly improved; in addition, through the coordinated arrangement of multiple coaxial sensing blocks and micro-correction rods, on the one hand, before drilling, when the rotor is placed on the clamping unit, it can automatically detect whether the rotor and the dynamic bushing are coaxial, and the coaxiality can be adjusted spontaneously, and at the same time, the rotor can be limited, thereby making the drilling accuracy higher and less likely to deviate from the target drilling. On the other hand, when drilling, the stability of the rotor can be monitored in real time through the rotation measuring unit, so as to timely detect the radial deviation of the rotor caused by the force, thereby further improving the drilling accuracy and effectively reducing the defective rate of the rotor after drilling.

Description

Technical Field

[0001] The invention relates to a motor rotor high-efficiency punching device, in particular to a motor rotor high-efficiency punching device applied in the field of punching devices. Background Art

[0002] The motor rotor is one of the core components of the motor. Various holes are generally set on the rotor, which mainly have the following functions: reducing weight, increasing heat dissipation, reducing wind resistance and balancing the rotor. There are three main designs and positions of the motor rotor holes:

[0003] 1. Center hole type, remove the central part of the motor rotor to obtain higher heat dissipation efficiency, reduce the motor temperature and ensure the normal operation of the motor;

[0004] 2. Eccentric hole type: the hole of the motor rotor is not in the center, so the center of the rotor is different from the midline. This design can minimize the centrifugal force during the rotation of the rotor and improve the stability of the motor;

[0005] 3. Multi-hole type: the motor rotor is provided with multiple holes on the surface, and the multiple holes are symmetrical about the rotor axis. This design can increase the heat dissipation capacity of the motor, reduce the noise level of the motor, and improve the working efficiency of the motor.

[0006] The existing multi-hole drilling equipment on the rotor surface is mainly an ordinary radial drilling machine, but it needs manual marking before drilling and manual operation during drilling, which has low labor efficiency and poor precision. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing drilling equipment requires manual marking before drilling and also requires manual operation during drilling, resulting in low labor efficiency and poor precision.

[0008] In order to solve the above problems, the present invention provides a high-efficiency drilling device for a motor rotor, comprising a workpiece clamping unit, a drilling unit and a controller for controlling the workpiece clamping unit and the drilling unit, which are arranged in parallel. The drilling unit comprises a transverse moving shaft, a longitudinal moving shaft is slidably connected to the transverse moving shaft, a rack is fixedly connected to the upper end of the transverse moving shaft, the outer end of the longitudinal moving shaft close to the gear turntable is rotatably connected to the gear turntable, the rotating shaft of the gear turntable is meshed with the rack, an electric slide is installed at one end of the longitudinal moving shaft, a slide seat is slidably connected to the electric slide, a motor and a drilling assembly are fixedly installed on the slide seat, and the output shaft of the motor and the output shaft of the drilling assembly are connected The motor is connected by a pulley, and a drill bit is installed at one end of the motor away from the longitudinal moving axis; the workpiece clamping unit includes a support frame, and a drilling disk installed on the upper end of the support frame through an electric turntable, and a plurality of groups of clamping cylinders stacked on each other are arranged in the middle of the upper end of the drilling disk, and the clamping cylinders include a cushion block, a plurality of step support angles distributed in a ring array and fixedly connected to the upper end of the cushion block, and a fixed liner placed above the plurality of step support angles, the lowest cushion block is fixedly connected to the drilling disk, and the remaining cushion blocks are fixedly connected to the fixed liner below them by bolts, and a dynamic liner is also placed above the plurality of step support angles at the top, and the plurality of step support angles, the cushion block, the fixed liner and the dynamic liner are coaxially arranged;

[0009] The upper end of the pad block is fixedly connected to a plurality of stepped support angles distributed in a circular array, a coaxial sensing block is arranged in the middle of the edge of the upper end of the stepped support angle close to the axis of the pad block, an L-shaped through hole is drilled inside the stepped support angle, the coaxial sensing block is slidably connected to the inner wall of the vertical section of the L-shaped through hole, and a plurality of supporting rods are fixedly connected between the lower end of the coaxial sensing block and the horizontal inner wall of the L-shaped through hole, a dimming strip is fixedly connected to the mouth of the L-shaped through hole away from the coaxial sensing block, the coaxial sensing block includes a pad sliding with the L-shaped through hole, a trigger strip located at the upper end of the pad, an external pressure sensor fixedly connected between the trigger strip and the pad, and a purple light fixedly installed in the middle of the lower end of the pad, the emitting end of the purple light faces the horizontal side of the L-shaped through hole, the upper end of the trigger strip movably passes through the stepped support angle and extends above the stepped support angle, and the external pressure sensor is connected to the controller signal.

[0010] In the above-mentioned motor rotor efficient drilling equipment, the manual marking process before drilling can be directly omitted, and the drilling process is completed automatically without manual operation. Compared with the existing technology, the drilling accuracy and drilling efficiency are greatly improved.

[0011] As a further improvement of the present application, the support rod is an elastic structure, and in a top-down angle, the center line of the support rod does not coincide with the center line of the L-shaped through hole, the center line of the ultraviolet light emitting end coincides with the center line of the L-shaped through hole, and when the upper surface of the trigger bar is flush with the stepped support angle, in a front-view angle, the center line of the ultraviolet light emitting end coincides with the center line of the L-shaped through hole.

[0012] As a further improvement of the present application, the height of the upper end of the trigger strip protruding from the stepped support angle surface is not more than 2 cm, the inner wall of the dimming strip is coated with a paint that changes color when exposed to ultraviolet light, and the dimming strip is a hard transparent structure.

[0013] As a further improvement of the present application, a plurality of convex grooves distributed in a circular array are excavated on the outer surface of the dynamic bushing, a micro-correction rod is provided in the convex groove, two electric push rods are fixedly connected between the micro-correction rod and the inner wall of the convex groove away from the mouth, the electric push rods are connected to the controller signal, and when the electric push rods are at the original length, the micro-correction rods are completely located in the arc correction strip.

[0014] As a further improvement of the present application, the micro-correction rod includes a lining plate and an arc correction strip fixedly connected to the end of the lining plate away from the electric push rod, a resistance strip is fixedly connected to the middle of the arc correction strip, the length and width of the lining plate are consistent with the inner length and width of the convex groove, the diameter and length of the arc correction strip are not greater than the width and length of the convex groove mouth, and both ends of the arc correction strip are hemispherical structures, and the middle part of the arc correction strip is a cylindrical structure.

[0015] As a further improvement of the present application, the abutment strip is made of hard rubber material and has a solid structure.

[0016] As another improvement of the present application, the interference bar is a hollow structure, and a measuring and rotating unit is provided inside the hollow interference bar. An alarm connected to the controller signal is also installed on the longitudinal moving shaft. The measuring and rotating unit includes a central fixed plate fixedly connected to the arc correction bar, a variable strip fixedly connected to the upper end of the central fixed plate, and a plurality of sensing strips fixedly connected to the left and right ends of the central fixed plate respectively. A convergence cavity and a plurality of connecting holes are opened in the middle of the central fixed plate. The plurality of connecting holes respectively form a convergence cavity and a plurality of sensing strips. An internal pressure sensor is installed on the inner wall of the convergence cavity. The internal pressure sensor is connected to the controller signal. The space surrounded by the sensing strip, the convergence cavity and the plurality of connecting holes is saturated and filled with deionized water.

[0017] As another improvement supplement of the present application, the variable-tolerant strip is a spherical structure, and is wrapped with a spherical elastic layer, and the top of the elastic layer is in contact with the center of the inner wall of the interference strip, and there is no force contact between the spherical end of the sensing strip and the inner wall of the interference strip.

[0018] As another improved supplement of the present application, the end of the sensing strip is a spherical structure, and the spherical portion of the sensing strip is divided into an elastic shell structure, and the horizontal portion of the sensing strip is a hard shell structure.

[0019] In summary, the manual marking process before drilling can be directly omitted, and the drilling process is completed automatically without manual operation. Compared with the existing technology, the drilling accuracy and drilling efficiency are greatly improved; in addition, through the coordinated arrangement of multiple coaxial sensing blocks and micro-correction rods, on the one hand, before drilling, when the rotor is placed on the clamping unit, it can automatically detect whether the rotor and the moving bushing are coaxial, and the coaxiality can be adjusted spontaneously, and at the same time, the rotor can be limited, thereby making the drilling accuracy higher and less likely to deviate from the target drilling. On the other hand, when drilling, the stability of the rotor can be monitored in real time through the rotation measuring unit, which is convenient for timely detection of radial deviation of the rotor due to force, thereby further improving the drilling accuracy and effectively reducing the defective rate of the rotor after drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front perspective view of the first embodiment of the present application;

[0021] Figure 2 This is a rear perspective view of the first embodiment of the present application;

[0022] Figure 3 This is a front view of the first embodiment of the present application;

[0023] Figure 4 This is a three-dimensional diagram of a cushion block according to the first embodiment of the present application;

[0024] Figure 5 This is a front cross-sectional view of a stepped brace angle according to the first embodiment of the present application;

[0025] Figure 6 A schematic diagram of the upper end portion of the stepped support angle according to the first embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the upper end portion of the step support angle of the first embodiment of the present application when it is squeezed by the gravity of the workpiece;

[0027] Figure 8 This is a front cross-sectional view of a dynamic bushing according to a first embodiment of the present application;

[0028] Fig. 9 A three-dimensional diagram of a micro-correction rod according to a first embodiment of the present application;

[0029] Fig.10 This is a top cross-sectional view of a dynamic bushing according to a first embodiment of the present application;

[0030] Fig.11 This is a schematic top cross-sectional view of the interference strip in the second embodiment of the present application;

[0031] Fig.12This is a partial top view schematic diagram of a measuring and rotating unit according to a second embodiment of the present application;

[0032] Fig.13 It is a partial front view schematic diagram of the measuring and rotating unit of the second embodiment of the present application;

[0033] Fig.14 A top cross-sectional view of the second embodiment of the present application when drilling a hole;

[0034] Fig.15 This is a top cross-sectional view of the interference strip when the rotor undergoes radial rotational deviation during drilling according to the second embodiment of the present application.

[0035] Description of the numbers in the figure:

[0036] 1 horizontal moving axis, 2 longitudinal moving axis, 31 gear turntable, 32 rack, 41 slide, 42 motor, 43 drilling assembly, 51 support frame, 52 drilling disk, 61 cushion block, 601 convex groove, 602 arc correction strip, 603 lining plate, 604 electric push rod, 62 fixed bushing, 63 dynamic bushing, 7 stepped support angle, 701 L-shaped through hole, 702 dimming strip, 8 coaxial sensing block, 81 touch strip, 82 external pressure sensor, 83 lining block, 84 purple light, 85 support rod, 9 resistance strip, 91 variable strip, 92 center fixed plate, 93 sensing strip, 901 convergence cavity, 902 connecting hole, 903 internal pressure sensor. DETAILED DESCRIPTION

[0037] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0038] The first implementation method:

[0039] Figure 1-3A high-efficiency drilling device for a motor rotor is shown. In the figure, a represents a rotor to be drilled, and includes a workpiece clamping unit, a drilling unit and a controller for controlling the workpiece clamping unit and the drilling unit, which are arranged in parallel. The drilling unit includes a transverse moving shaft 1, a longitudinal moving shaft 2 is slidably connected to the transverse moving shaft 1, a rack 32 is fixedly connected to the upper end of the transverse moving shaft 1, and the outer end of the longitudinal moving shaft 2 close to the gear turntable 31 is rotatably connected to the gear turntable 31, and the rotating shaft of the gear turntable 31 is meshed with the rack 32. One end of the longitudinal moving shaft 2 is installed There is an electric slide, on which a slide seat 41 is slidably connected, on which a motor 42 and a drilling assembly 43 are fixedly mounted, the output shaft of the motor 42 and the output shaft of the drilling assembly 43 are connected via a pulley, and a drill is mounted on the end of the motor 42 away from the longitudinal moving shaft 2; the workpiece clamping unit comprises a support frame 51, and a drilling disk 52 mounted on the upper end of the support frame 51 via an electric turntable, a plurality of groups of mutually stacked clamping cylinders are arranged in the middle of the upper end of the drilling disk 52, and the clamping cylinders comprise a cushion block 61, a A plurality of stepped support angles 7 are arranged in an annular array, and a fixed bushing 62 is placed above the plurality of stepped support angles 7. The bottom pad 61 is fixedly connected to the drilling disk 52, and the remaining pads 61 are fixedly connected to the fixed bushing 62 below them by bolts. A dynamic bushing 63 is also placed above the top plurality of stepped support angles 7, and the plurality of stepped support angles 7, the pad 61, the fixed bushing 62 and the dynamic bushing 63 are coaxially arranged. When drilling holes, the rotor to be drilled can be directly sleeved outside the clamping cylinder, and the bottom of its inner ring is placed on the plurality of stepped support angles 7. The second step from top to bottom is arranged on the inner ring of the movable bushing 63, and then the coaxiality of the rotor and the movable bushing 63 is adjusted, and then the gear turntable 31 is rotated to make the entire longitudinal movable shaft 2 slide to a suitable position on the transverse movable shaft 1, and then the drilling assembly 43 can be controlled by the controller to start drilling. According to the target number of holes to be drilled in one circle, the angle between two adjacent holes is calculated, and the controller controls 52 to rotate, and each rotation angle is connected with the angle between two adjacent holes to achieve 360° uniform drilling;

[0040] The number of the clamping tubes can be determined according to the actual height dimension of the motor rotor, and the clamping tubes of appropriate dimensions can be selected according to the radial dimension of the motor rotor.

[0041] like Figure 4-Figure 5 A coaxial sensing block 8 is arranged at the middle of the edge of the upper end of the stepped support angle 7 near the axis of the cushion block 61, an L-shaped through hole 701 is drilled inside the stepped support angle 7, the coaxial sensing block 8 is slidably connected to the vertical inner wall of the L-shaped through hole 701, and a plurality of support rods 85 are fixedly connected between the lower end of the coaxial sensing block 8 and the horizontal inner wall of the L-shaped through hole 701, and a dimming strip 702 is fixedly connected to the mouth of the L-shaped through hole 701 away from the coaxial sensing block 8, as shown in FIG. Figure 6The coaxial sensing block 8 includes a liner 83 that slides with the L-shaped through hole 701, a touch bar 81 located at the upper end of the liner 83, an external pressure sensor 82 fixedly connected between the touch bar 81 and the liner 83, and a purple light 84 fixedly installed in the middle of the lower end of the liner 83. The emitting end of the purple light 84 faces the horizontal side of the L-shaped through hole 701. The upper end of the touch bar 81 movably penetrates the stepped support angle 7 and extends to the top of the stepped support angle 7. The external pressure sensor 82 is connected to the controller signal, such as Figure 5 The stepped support angle 7 is arranged in multiple steps, wherein the coaxial induction block 8 is located at the topmost step, and the bottom of the dynamic bushing 63 falls on the inner step, and at this time, the inner ring of the rotor falls on the second step from top to bottom of the stepped support angle 7. When the rotor is sleeved on the outer side of the dynamic bushing 63, the partition between the inner and outer rings of the rotor will squeeze the multiple touch strips 81 on the stepped support angle 7, as shown in FIG. Figure 7 , b in the figure represents the purple light. When they are coaxial, multiple touch bars 81 will be squeezed synchronously, so that multiple external pressure sensors 82 will generate force data synchronously, and the force data tend to be consistent. At this time, the controller controls the corresponding purple light 84 to turn on and generate purple light according to whether the external pressure sensor 82 generates force data. At the same time, because the touch bar 81 is squeezed, the purple light lamp 84 moves down, so that the purple light it emits can irradiate the dimming bar 702 along the lateral part of the L-shaped through hole 701, causing it to change color. At this time, multiple dimming bars 702 are all in a color-changing state. When they are not coaxial, there is always one or more touch bars 81 that are not squeezed or all are not squeezed, so that the corresponding dimming bar 702 will not change color. Based on this, it can directly remind the on-site staff whether they are coaxial, which is convenient for timely adjustment, thereby effectively ensuring the accuracy of punching and effectively avoiding the occurrence of punching deviation.

[0042] It is worth noting that the number of steps of the step support angle 7 is not less than 3.

[0043] The support rod 85 is an elastic structure, and in a top-down view, the center line of the support rod 85 does not coincide with the center line of the L-shaped through hole 701, and the center line of the emitting end of the ultraviolet lamp 84 coincides with the center line of the L-shaped through hole 701, so that the multiple support rods 85 will not block the ultraviolet light emitted by the ultraviolet lamp 84. When the emitting end of the ultraviolet lamp 84 coincides with the L-shaped through hole 701, it is effectively guaranteed that the dimming strip 702 can be directly exposed to ultraviolet light and change color, so that when drilling, the staff can judge whether the coaxiality of the motor rotor and the moving bushing 63 is good based on whether the multiple dimming strips 702 have changed color. When the upper surface of the touch strip 81 is flush with the stepped support angle 7, in a front-view angle, the center line of the emitting end of the ultraviolet lamp 84 coincides with the center line of the L-shaped through hole 701.

[0044] The height of the upper end of the trigger strip 81 protruding from the surface of the stepped support angle 7 is not more than 2 cm, and the radial thickness is not more than 5 mm. The inner wall of the light-changing strip 702 is coated with a paint that changes color when exposed to ultraviolet light, and the light-changing strip 702 is a hard transparent structure, so that when it is exposed to ultraviolet light, its color change can be directly seen from the outside.

[0045] like Figure 8-Figure 10 A plurality of convex grooves 601 distributed in a circular array are bored on the outer surface of the movable bushing 63, and a micro-correction rod is arranged in the convex groove 601. Two electric push rods 604 are fixedly connected between the micro-correction rod and the inner wall of the convex groove 601 away from the mouth. The electric push rod 604 is connected to the controller signal. When the electric push rod 604 is at its original length, the micro-correction rod is completely located in the camber correction strip 602. The micro-correction rod comprises a lining plate 603 and a camber correction strip 602 fixedly connected to the end of the lining plate 603 away from the electric push rod 604, and a conflict strip 9 is fixedly connected to the middle of the camber correction strip 602. When it is monitored that the rotor and the movable bushing 63 are not aligned with the axis, it indicates that there is a gap between the rotor and the movable bushing 63. At this time, the controller can control the electric push rod 604 to extend, thereby pushing the plurality of micro-correction rods to move outward by the same length until they all conflict with the rotor. At this time, the problem of non-alignment caused by the gap can be eliminated, and at the same time, the rotor can be limited in the radial direction, so that it is not easy to deviate radially during drilling.

[0046] The abutment strip 9 is made of hard rubber material and has a solid structure, so that when the abutment strip 9 abuts against the rotor, it is not easy to cause damage to the rotor. At the same time, when it abuts against the rotor, it can increase the friction between the abutment strip 9 and the rotor, and then limit the rotor in the radial direction, so that when drilling, radial rotation deviation is not easy to occur, and the drilling accuracy is effectively guaranteed. The length and width of the lining plate 603 are consistent with the length and width of the inner part of the convex groove 601, the diameter and length of the arc correction strip 602 are not greater than the width and length of the mouth of the convex groove 601, and both ends of the arc correction strip 602 are hemispherical structures, and the middle part of the arc correction strip 602 is a cylindrical structure, so that it can stably extend out of the mouth of the convex groove 601, which is convenient for abutting against the rotor.

[0047] In summary, the manual marking process before drilling can be directly omitted, and the drilling process is completed automatically without manual operation. Compared with the existing technology, the drilling accuracy and drilling efficiency are greatly improved; in addition, through the coordinated arrangement of multiple coaxial sensing blocks 8 and micro-correction rods, on the one hand, before drilling, when the rotor is placed on the clamping unit, it can automatically detect whether the rotor and the dynamic bushing 63 are coaxial, and the coaxiality can be adjusted spontaneously, and at the same time, the rotor can be limited, thereby making the drilling accuracy higher and less likely to deviate from the target drilling.

[0048] The second implementation method:

[0049] This embodiment is based on the first embodiment, and the arrangement of the interference strip 9 is changed, while the rest of the parts remain the same as the first embodiment.

[0050] Figure 11-13 As shown, the interference strip 9 is a hollow structure, and a rotation measuring unit is provided inside the hollow interference strip 9. An alarm connected to the controller signal is also installed on the longitudinal moving shaft 2. The rotation measuring unit includes a central fixed plate 92 fixedly connected to the curved surface correction strip 602, a variable strip 91 fixedly connected to the upper end of the central fixed plate 92, and a plurality of induction strips 93 respectively fixedly connected to the left and right ends of the central fixed plate 92. Fig.14 A converging cavity 901 and a plurality of connecting holes 902 are excavated in the middle of the central fixed plate 92. The plurality of connecting holes 902 respectively connect the converging cavity 901 and the plurality of sensing strips 93. An internal pressure sensor 903 is installed on the inner wall of the converging cavity 901. The internal pressure sensor 903 is connected to the controller signal. The space surrounded by the sensing strip 93, the converging cavity 901 and the plurality of connecting holes 902 is saturated and filled with deionized water. The end of the sensing strip 93 is a spherical structure, and the spherical portion of the sensing strip 93 is an elastic shell structure, and the horizontal portion of the sensing strip 93 is a hard shell structure.

[0051] like Fig.14 When the micro-correction rod contacts the rotor to correct and limit its coaxiality, the force on the contact bar 9 is perpendicular to the middle of the contact bar 9. At this time, after being squeezed, the elastic layer is deformed together, and the middle of the contact bar 9 expands outward under elastic squeezing, thereby separating the multiple sensing bars 93 from the inner wall of the contact bar 9. At this time, the sensing bar 93 is not subjected to force. Fig.15 When the rotor deviates radially, the friction between the resistance bar 9 and the rotor causes the resistance bar 9 to deform in the direction of the deviated rotation. At this time, the inner wall of the resistance bar 9 comes into contact with the ends of the multiple sensing bars 93 on one side, and the deionized water in the air moves into the convergence chamber 901 at the same time, thereby increasing the water pressure on the internal pressure sensor 903, and the force data thereof will fluctuate. Based on this data, the controller can control the alarm to sound an alarm, thereby realizing an early warning of the radial deviation of the rotor.

[0052] It is worth noting that an alarm can be selectively installed on the longitudinal moving shaft 2 to promptly sound an alarm when radial deviation occurs, so that on-site staff can promptly understand the situation and make corresponding maintenance adjustments.

[0053] The variable-displacement strip 91 is a spherical structure, and the variable-displacement strip 91 is wrapped with a spherical elastic layer, and the top of the elastic layer contacts the center of the inner wall of the interference strip 9, and the spherical end of the sensing strip 93 is not in force contact with the inner wall of the interference strip 9. The elastic layer can provide a certain space for the deformation of the interference strip 9. On the one hand, the overall elasticity of the interference strip 9 is improved to protect the rotor from damage when it contacts the rotor. On the other hand, when the rotor rotates radially and deviates, the deformation of the interference strip 9 can trigger the rotation measuring unit, which is convenient for timely detection of the deviation and effectively avoiding the situation of continuing drilling in the case of deviation. It can effectively ensure the drilling accuracy and effectively reduce the defective rate.

[0054] By setting the hollow abutment bar 9 and the rotation measuring unit therein, the present invention can also monitor the stability of the rotor in real time during drilling, so as to timely detect the radial deviation of the rotor caused by the force, thereby further improving the drilling accuracy and effectively reducing the defective rate of the rotor after drilling.

[0055] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An efficient drilling device for motor rotors, characterized in that: The invention comprises a workpiece clamping unit and a drilling unit arranged in parallel, and a controller for controlling the workpiece clamping unit and the drilling unit, wherein the drilling unit comprises a transverse moving shaft (1), a longitudinal moving shaft (2) being slidably connected to the transverse moving shaft (1), a rack (32) being fixedly connected to the upper end of the transverse moving shaft (1), the outer end of the longitudinal moving shaft (2) close to the gear turntable (31) being rotatably connected to the gear turntable (31), the rotating shaft of the gear turntable (31) being meshingly connected to the rack (32), an electric slide being installed at one end of the longitudinal moving shaft (2), a slide seat (41) being slidably connected to the electric slide, a motor (42) and a drilling assembly (43) being fixedly installed on the slide seat (41), the output shaft of the motor (42) and the output shaft of the drilling assembly (43) being connected via a pulley, the motor (42) A drill bit is installed at one end away from the longitudinal moving axis (2); the workpiece clamping unit comprises a support frame (51) and a drilling disk (52) mounted on the upper end of the support frame (51) via an electric turntable; a plurality of groups of clamping cylinders stacked on each other are arranged in the middle of the upper end of the drilling disk (52); the clamping cylinder comprises a cushion block (61), a plurality of stepped support angles (7) distributed in an annular array and fixedly connected to the upper end of the cushion block (61), and a fixed liner (62) placed above the plurality of stepped support angles (7); the lowest cushion block (61) is fixedly connected to the drilling disk (52); the remaining cushion blocks (61) are fixedly connected to the fixed liner (62) below them via bolts; a movable liner (63) is also placed above the plurality of stepped support angles (7) at the top; and the plurality of stepped support angles (7), the cushion block (61), the fixed liner (62) and the movable liner (63) are coaxially arranged; The upper end of the cushion block (61) is fixedly connected to a plurality of stepped support angles (7) distributed in a ring array, a coaxial sensing block (8) is arranged at the middle of the edge of the upper end of the stepped support angle (7) close to the axis of the cushion block (61), an L-shaped through hole (701) is bored inside the stepped support angle (7), the coaxial sensing block (8) is slidably connected to the vertical inner wall of the L-shaped through hole (701), and a plurality of support rods (85) are fixedly connected between the lower end of the coaxial sensing block (8) and the horizontal inner wall of the L-shaped through hole (701), and a light-changing device is fixedly connected to the mouth of the L-shaped through hole (701) away from the coaxial sensing block (8). The coaxial sensing block (8) comprises a liner (83) sliding with the L-shaped through hole (701), a trigger strip (81) located at the upper end of the liner (83), an external pressure sensor (82) fixedly connected between the trigger strip (81) and the liner (83), and a purple light lamp (84) fixedly installed at the middle of the lower end of the liner (83), the emitting end of the purple light lamp (84) facing the horizontal side of the L-shaped through hole (701), the upper end of the trigger strip (81) movably penetrates the stepped support angle (7) and extends to the top of the stepped support angle (7), and the external pressure sensor (82) is connected to the controller signal; The support rod (85) is an elastic structure, and in a top-view angle, the center line of the support rod (85) does not coincide with the center line of the L-shaped through hole (701), the center line of the emitting end of the purple light lamp (84) coincides with the center line of the L-shaped through hole (701), and when the upper surface of the trigger bar (81) is flush with the stepped support angle (7), in a front-view angle, the center line of the emitting end of the purple light lamp (84) coincides with the center line of the L-shaped through hole (701); The outer surface of the movable bushing (63) is provided with a plurality of convex grooves (601) distributed in a circular array, and a micro-correction rod is arranged in the convex groove (601). Two electric push rods (604) are fixedly connected between the micro-correction rod and the inner wall of the convex groove (601) away from the mouth. The electric push rods (604) are connected to the controller signal. When the electric push rods (604) are at their original length, the micro-correction rods are completely located in the cambered correction strip (602); the micro-correction rods include a liner (603) and A curved surface correction strip (602) is fixedly connected to one end of the lining plate (603) away from the electric push rod (604), and a resistance strip (9) is fixedly connected to the middle of the curved surface correction strip (602). The length and width of the lining plate (603) are consistent with the inner length and width of the convex groove (601). The diameter and length of the curved surface correction strip (602) are not greater than the width and length of the mouth of the convex groove (601). Both ends of the curved surface correction strip (602) are hemispherical structures, and the middle of the curved surface correction strip (602) is a cylindrical structure.

2. The electric motor rotor high-efficiency drilling device according to claim 1 is characterized in that: The height of the upper end of the trigger strip (81) protruding from the surface of the stepped support angle (7) is no more than 2 cm, the inner wall of the light-changing strip (702) is coated with a paint that changes color when exposed to ultraviolet light, and the light-changing strip (702) is a hard transparent structure.

3. The electric motor rotor high-efficiency drilling device according to claim 1 is characterized in that: The abutment strip (9) is made of a hard rubber material, and the abutment strip (9) is a solid structure.

4. The electric motor rotor high-efficiency drilling device according to claim 1 is characterized in that: The abutment bar (9) is a hollow structure, and a measuring rotation unit is provided inside the hollow abutment bar (9). An alarm connected to a controller signal is also installed on the longitudinal moving shaft (2). The measuring rotation unit comprises a central fixed plate (92) fixedly connected to the curved surface correction bar (602), a variable-size bar (91) fixedly connected to the upper end of the central fixed plate (92), and a plurality of sensing bars (93) respectively fixedly connected to the left and right ends of the central fixed plate (92). A convergence cavity (901) and a plurality of connecting holes (902) are bored in the middle of the central fixed plate (92). The plurality of connecting holes (902) respectively converge the cavity (901) and the plurality of sensing bars (93). An internal pressure sensor (903) is installed on the inner wall of the convergence cavity (901). The internal pressure sensor (903) is connected to the controller signal. The space enclosed by the sensing bar (93), the convergence cavity (901) and the plurality of connecting holes (902) is saturated and filled with deionized water.

5. The electric motor rotor high-efficiency drilling device according to claim 4 is characterized in that: The variable-displacement strip (91) is a spherical structure, and the variable-displacement strip (91) is wrapped with a spherical elastic layer, and the top of the elastic layer is in contact with the center of the inner wall of the abutment strip (9), and there is no force contact between the spherical end of the sensing strip (93) and the inner wall of the abutment strip (9).

6. The electric motor rotor high-efficiency drilling device according to claim 5, characterized in that: The end of the sensing strip (93) is a spherical structure, and the spherical portion of the sensing strip (93) is divided into an elastic shell structure, and the horizontal portion of the sensing strip (93) is a hard shell structure.

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