Protective drilling and milling machine for motor production

Abstract

The invention relates to the technical field of drilling and milling machines, in particular to a protection drilling and milling machine for motor production, which comprises an operation table, the top end of the operation table is fixedly connected with a protection box, and the inner wall of the protection box is fixedly connected with an omnibearing adjusting mechanism; the protection mechanism comprises a first cold air spraying pipe and a second cold air spraying pipe which are arranged in a protection box in a sleeved mode, a large air outlet ring and a small air outlet ring are arranged at the bottom end of the protection box, and the position of the large air outlet ring corresponds to the position of the first cold air spraying pipe in an up-down mode. According to the protection drilling and milling machine, a double-air-wall protection system is constructed through the protection mechanism, a first cold air spraying pipe and a second cold air spraying pipe spray cold air through a large air outlet ring and a small air outlet ring correspondingly, an annular protection barrier is formed around a drilling area, chippings and impurities generated in the drilling process can be effectively prevented from splashing outwards, and the drilling efficiency is improved. The personal safety of operators is guaranteed, and the working environment is prevented from being polluted.

Description

Technical Field

[0001] The invention relates to the technical field of drilling and milling machines, in particular to a protective drilling and milling machine for motor production. Background Art

[0002] In the motor manufacturing process, drilling and milling machines, as key processing equipment, undertake important tasks such as drilling and milling of motor components. With the rapid development of the motor manufacturing industry, higher requirements are being placed on the machining accuracy, production efficiency, safety, and environmental protection of motor components during the machining process. Traditional drilling and milling machines used in motor production typically only have basic drilling and milling functions and a relatively simple structure.

[0003] However, existing drilling and milling machines for motor production have many problems in actual use. In terms of protection performance, there is a lack of effective protection measures. The debris and impurities generated during the drilling process are easy to fly everywhere, which not only threatens the personal safety of the operator, but also pollutes the working environment and increases the difficulty of cleaning. Moreover, in the processing monitoring link, there is a lack of real-time and accurate monitoring methods, making it difficult to detect and adjust abnormal conditions in the drilling process, such as drill rod wear, abnormal cutting parameters, etc., in a timely manner, thereby affecting the processing quality and production efficiency, and may even cause equipment failure and production accidents. Summary of the Invention

[0004] In response to the above-mentioned shortcomings of the prior art, the present invention provides a protective drilling and milling machine for motor production, which can effectively solve the problems of the existing drilling and milling machines for motor production in the prior art, such as the lack of protective measures, which lead to debris flying and threaten the safety of operators, pollute the environment and are difficult to clean, and lack of real-time and accurate processing monitoring means.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a protective drilling and milling machine for motor production, comprising: An operating table, the top of which is fixedly connected to a protection box, and the inner wall of which is fixedly connected to an omnidirectional adjustment mechanism; The protection mechanism includes two mutually nested first and second cold air jet pipes arranged inside the protection box. A large air outlet ring and a small air outlet ring are opened at the bottom of the protection box. The large air outlet ring corresponds to the position of the first cold air jet pipe in upper and lower positions, and the small air outlet ring corresponds to the position of the second cold air jet pipe in upper and lower positions. The first cold air jet pipe and the second cold air jet pipe are fixedly connected by two symmetrical fixing rods; The detection mechanism includes a plurality of light receiving rings fixedly connected to the bottom wall of the protective box, an isolation ring is fixedly connected between each two light receiving rings, and the bottom end of the fixing rod is fixedly connected to a light emitting ring.

[0006] Preferably, the adjusting mechanism includes a fixing block fixedly connected to the inner wall of the protective box, the outer wall of the fixing block is fixedly connected to two symmetrical first limit bars, the outer walls of the two first limit bars are slidably clamped with a first fixing bracket, the bottom end of the first fixing bracket is fixedly connected to a first threaded sleeve, the outer wall of the fixing block is fixedly connected to the first mounting block and the first mounting plate, the outer wall of the first mounting plate is fixedly connected to the first motor, the output end of the first motor is fixedly connected to the first threaded rod, the first threaded sleeve is threadedly sleeved on the outer wall of the first threaded rod, and the other end of the first threaded rod is rotatably connected to the outer wall of the first mounting block.

[0007] The cam is fixedly mounted on a longitudinally traversing means, the cam being arranged to move the first end of the second motor towards the stopper, and the second end of the second motor being arranged to move the first end of the second motor towards the stopper.

[0008] Preferably, the outer wall of the L-shaped fixed plate is fixedly connected to a horizontal plate, the top of the horizontal plate is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a rotating drum, the outer wall of the rotating drum is provided with an entry and exit groove, the bottom end of the rotating drum is fixedly connected to two symmetrical vertical plates, the outer wall of one of the vertical plates is fixedly connected to a third motor, the output end of the third motor is fixedly connected to a rotating rod, the outer wall of the rotating rod is fixedly connected to a rotating block, the top and bottom ends of the rotating block are respectively fixedly connected to mounting sleeves, and the inner walls of the two mounting sleeves are detachably provided with drill rods.

[0009] Preferably, the detection mechanism also includes a conductive sheet fixedly connected to the outer wall of the first cold air jet duct, a resistor plate fixedly connected to the inner wall of the protection box, the conductive sheet and the resistor plate are slidably connected, the conductive sheet and the resistor plate constitute a sliding rheostat, the resistance of the conductive sheet gradually increases during the sliding process from top to bottom on the resistor plate, the sliding rheostat is electrically connected to the first cold air jet duct and the second cold air jet duct to form a wind force regulation circuit, and an air outlet is provided at the bottom end of the operating table.

[0010] Preferably, the electrical signals of the light emitting ring and the light receiving ring are connected to a PLC controller, and the PLC controller is connected to the electrical signals of the third motor to form a regulation loop. The large air outlet ring and the small air outlet ring are opened to form a circular block and an annular plate. Two symmetrical first connecting columns are fixedly connected between the large air outlet ring and the annular plate, and two symmetrical second connecting columns are fixedly connected between the annular plate and the circular block. The bottom end of the operating table is fixedly connected to a collection box.

[0011] Preferably, the bottom end of the operating table is fixedly connected to an infrared receiving ring, the bottom end of the annular plate is fixedly connected to a light collecting ring, and the infrared receiving board and the light collecting ring are electrically connected to the PLC controller to form a detection alarm circuit.

[0012] Preferably, the inner wall of the protection box is fixedly connected to a liquid pump, the water pumping end of the liquid pump is fixedly connected to the external water pumping pipe, the drainage end of the liquid pump is fixedly connected to a telescopic drainage pipe, the other end of the telescopic drainage pipe is fixedly connected to a water spray head, the bottom end of the extension plate is fixedly connected to a connecting block, the connecting block is used to fix the telescopic drainage pipe, the water spray head faces the drill rod, and the PLC controller is electrically connected to the first motor, the second motor, and the electric telescopic rod to form a start-stop circuit.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The protective drilling and milling machine has constructed a double wind wall protection system through the protection mechanism. The first cold air nozzle and the second cold air nozzle spray cold air through the large air outlet ring and the small air outlet ring respectively, forming an annular protective barrier around the drilling area, which can effectively prevent the debris and impurities generated during the drilling process from flying outward, which not only ensures the personal safety of the operator, but also avoids the pollution of the working environment. At the same time, the cold air will blow the debris into the collection box through the air outlet hole of the operating table, realizing the centralized cleaning of the debris and greatly reducing the cleaning difficulty.

[0014] 2. The coordination between the detection mechanism and the protection mechanism enables the detection mechanism to monitor debris splash during the drilling process in real time using a light-emitting ring and multiple interlocking light-receiving rings. When debris passes through the wind wall and blocks light, light-receiving rings at different positions will provide feedback on the corresponding degree of debris splash. If the PLC controller determines that the level of debris splash is severe and continuous based on the signals from the infrared receiving ring and light-collecting ring, it will immediately control the drill rod to rise and activate the third motor to swap the new drill rod with the old drill rod. This eliminates problems such as drill rod wear or abnormal cutting parameters at the source, and enables real-time and accurate monitoring and adjustment of abnormal drilling conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 3 This is a partial cross-sectional three-dimensional structure diagram of the present invention Figure 1 ; Figure 4 This is a partial cross-sectional three-dimensional structure diagram of the present invention Figure 2 ; Figure 5 Schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention Figure 1 ; Figure 6 Schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention Figure 2 ; Figure 7 It is a schematic diagram of the three-dimensional structure of part of the adjustment mechanism of the present invention.

[0017] Reference numerals: 1, operating table; 2, protection box; 3, adjustment mechanism; 31, fixing block; 32, first limiting strip; 33, first fixing bracket; 34, first threaded sleeve; 35, first mounting block; 36, first mounting plate; 37, first motor; 38, first threaded rod; 39, electric telescopic rod; 310, second fixing bracket; 311, second limiting strip; 312, L-shaped fixing plate; 313, second motor; 314, second threaded rod; 315, second threaded sleeve; 316, second mounting block; 317, connecting plate; 318, extension plate; 319, horizontal plate; 320, driving motor; 321, rotating drum; 322. Inlet and outlet slots; 323. Vertical plate; 324. Third motor; 325. Rotating rod; 326. Rotating block; 327. Mounting sleeve; 328. Drill rod; 4. Detection mechanism; 41. Conductive sheet; 42. Resistor plate; 43. Air outlet tunnel; 44. Collecting box; 45. Infrared receiving ring; 46. Light collecting ring; 47. Light receiving ring; 48. Isolation ring; 49. Light emitting ring; 5. Protection mechanism; 51. First cold air nozzle; 52. Second cold air nozzle; 53. Large air outlet ring; 54. Small air outlet ring; 55. Fixing rod; 6. Liquid pump; 7. Telescopic drain pipe; 8. Sprinkler head; 9. Connecting block. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to the embodiments.

[0020] Example: Refer to Figures 1 to 7 , a protective drilling and milling machine for motor production, comprising: An operating table 1, the top of which is fixedly connected to a protection box 2, and the inner wall of the protection box 2 is fixedly connected to an omnidirectional adjustment mechanism 3; The adjusting mechanism 3 includes a fixed block 31 fixedly connected to the inner wall of the protective box 2, the outer wall of the fixed block 31 is fixedly connected to two symmetrical first limit bars 32, the outer walls of the two first limit bars 32 are slidably clamped with a first fixing frame 33, the bottom end of the first fixing frame 33 is fixedly connected to a first threaded sleeve 34, the outer wall of the fixed block 31 is fixedly connected to a first mounting block 35 and a first mounting plate 36, the outer wall of the first mounting plate 36 is fixedly connected to a first motor 37, the output end of the first motor 37 is fixedly connected to a first threaded rod 38, the first threaded sleeve 34 is threadedly sleeved on the outer wall of the first threaded rod 38, and the other end of the first threaded rod 38 is rotatably connected to the outer wall of the first mounting block 35.

[0021] The outer wall of the first fixing frame 33 is fixedly connected to the electric telescopic rod 39, the telescopic end of the electric telescopic rod 39 is fixedly connected to the second fixing frame 310, both ends of the second fixing frame 310 are slidably connected to the second limit strip 311, the outer wall of the second limit strip 311 is fixedly connected to an L-shaped fixing plate 312, the top end of the L-shaped fixing plate 312 is fixedly connected to the second motor 313, the output end of the second motor 313 is fixedly connected to the second threaded rod 314, and the outer wall of the second fixing frame 310 is fixedly connected to the second threaded sleeve 314. 15. The second threaded sleeve 315 is threadedly sleeved on the outer wall of the second threaded rod 314. The outer wall of the L-shaped fixing plate 312 is fixedly connected to the second mounting block 316. The other end of the second threaded rod 314 is rotatably connected to the outer wall of the second mounting block 316. The outer walls of both sides of the L-shaped fixing plate 312 are fixedly connected to two symmetrical connecting plates 317. The opposite sides of the two connecting plates 317 are fixedly connected to extension plates 318. The other ends of the two extension plates 318 are respectively fixedly connected to the inner circumferential wall of the second cold air spray pipe 52.

[0022] The outer wall of the L-shaped fixed plate 312 is fixedly connected to a horizontal plate 319, the top of the horizontal plate 319 is fixedly connected to a driving motor 320, the output end of the driving motor 320 is fixedly connected to a rotating drum 321, the outer wall of the rotating drum 321 is provided with an entry and exit slot 322, the bottom end of the rotating drum 321 is fixedly connected to two symmetrical vertical plates 323, the outer wall of one of the vertical plates 323 is fixedly connected to a third motor 324, the output end of the third motor 324 is fixedly connected to a rotating rod 325, the outer wall of the rotating rod 325 is fixedly connected to a rotating block 326, the top and bottom ends of the rotating block 326 are respectively fixedly connected to mounting sleeves 327, and the inner walls of the two mounting sleeves 327 are removably provided with a drill rod 328.

[0023] The protection mechanism 5 includes two mutually nested first and second cold air jet pipes 51, 52 arranged inside the protection box 2. A large air outlet ring 53 and a small air outlet ring 54 are provided at the bottom end of the protection box 2. The large air outlet ring 53 corresponds to the position of the first cold air jet pipe 51, and the small air outlet ring 54 corresponds to the position of the second cold air jet pipe 52. Two symmetrical fixing rods 55 are fixedly connected between the first and second cold air jet pipes 51, 52. The detection mechanism 4 includes a plurality of light receiving rings 47 fixedly connected to the bottom wall of the protective box 2, an isolation ring 48 is fixedly connected between each two light receiving rings 47, and a light emitting ring 49 is fixedly connected to the bottom end of the fixing rod 55; The detection mechanism 4 also includes a conductive sheet 41 fixedly connected to the outer wall of the first cold air jet pipe 51, and a resistor plate 42 fixedly connected to the inner wall of the protection box 2. The conductive sheet 41 is slidably connected to the resistor plate 42. The conductive sheet 41 and the resistor plate 42 constitute a sliding rheostat. The resistance of the conductive sheet 41 gradually increases during the sliding process from top to bottom on the resistor plate 42. The sliding rheostat is electrically connected to the first cold air jet pipe 51 and the second cold air jet pipe 52 to form a wind regulation circuit. An air outlet tunnel 43 is provided at the bottom of the operating table 1.

[0024] The light emitting ring 49 and the light receiving ring 47 are electrically connected to a PLC controller, and the PLC controller is electrically connected to the third motor 324 to form a regulation loop. The large air outlet ring 53 and the small air outlet ring 54 are opened to form a circular block and an annular plate. Two symmetrical first connecting columns are fixedly connected between the large air outlet ring 53 and the annular plate, and two symmetrical second connecting columns are fixedly connected between the annular plate and the circular block. The bottom end of the operating table 1 is fixedly connected to a collecting box 44, wherein the collecting box 44 has an air outlet.

[0025] The bottom end of the operating table 1 is fixedly connected to an infrared receiving ring 45, and the bottom end of the annular plate is fixedly connected to a light collecting ring 46. The infrared receiving board and the light collecting ring 46 are electrically connected to the PLC controller to form a detection alarm circuit.

[0026] The inner wall of the protection box 2 is fixedly connected to a liquid pump 6, the water pumping end of the liquid pump 6 is fixedly connected to the external water pumping pipe, the drainage end of the liquid pump 6 is fixedly connected to a telescopic drainage pipe 7, the other end of the telescopic drainage pipe 7 is fixedly connected to a water spray head 8, the bottom end of the extension plate 318 is fixedly connected to a connecting block 9, the connecting block 9 is used to fix the telescopic drainage pipe 7, the water spray head 8 faces the drill rod 328, and the PLC controller is electrically connected to the first motor 37, the second motor 313, and the electric telescopic rod 39 to form a start-stop circuit.

[0027] The working principle of the present invention is as follows: First, the workpiece to be processed is fixed on the circular block through an external fixing mechanism.

[0028] Then the first motor 37 is started, driving the first threaded rod 38 to rotate. Since the first threaded sleeve 34 is threadedly sleeved on the first threaded rod 38, under the action of thread transmission, the first fixed frame 33 slides up and down along the two first limit bars 32 to achieve preliminary positioning of the drilling equipment in the vertical direction. Subsequently, the electric telescopic rod 39 is extended or shortened, driving the second fixed frame 310 to move, so that the drilling equipment is preliminarily adjusted in the horizontal direction. Next, the second motor 313 is started, driving the second threaded rod 314 to rotate, and the second threaded sleeve 315 moves on the second threaded rod 314, driving the second fixed frame 310 to further fine-tune in the horizontal direction. By connecting the extension plate 318 with the second cold air nozzle 52, the position of the drill rod 328 is precisely adjusted to align it with the part of the workpiece to be processed.

[0029] After positioning is completed, the driving motor 320 is started to drive the rotating drum 321 to rotate, and the rotating drum 321 enables the drill rod 328 to start drilling the workpiece through the vertical plate 323, the rotating rod 325, the rotating block 326 and the mounting sleeve 327.

[0030] At the same time, protective mechanism 5 comes into play. As the drilling operation progresses, the first and second cold air ducts 51, 52 begin to operate, spraying cold air into the drilling area to cool the drill rod 328 and the workpiece, preventing excessive temperatures from affecting machining accuracy and equipment life. Cold air is ejected through the large and small air outlet rings 53, 54, respectively, providing all-around cooling of the drilling area. During the cooling process, the first cold air duct 51 will undergo some displacement due to factors such as vibration during drilling, causing the conductive sheet 41 fixed to its outer wall to slide on the resistor plate 42. As the conductive sheet 41 slides from top to bottom, the resistance of the sliding rheostat gradually increases. According to circuit principles, this change affects the wind speed control circuit, thereby adjusting the wind speed of the first and second cold air ducts 51, 52, achieving adaptive wind speed regulation to better meet the cooling requirements of different processing stages. Debris generated by drilling is blown into the collection box 44 through the air outlet 43 of the operating table 1 under the action of cold air, facilitating centralized cleaning. At the same time, the protection mechanism 5 plays a role. As the drilling operation proceeds, the first cold air jet pipe 51 and the second cold air jet pipe 52 respectively spray out two wind walls through the large air outlet ring 53 and the small air outlet ring 54, forming a protective barrier around the drilling area, effectively preventing impurities generated by drilling from flying out, and preventing impurities from causing harm to operators or polluting the working environment. During the drilling process, the drill rod 328 continues to descend and penetrate into the workpiece, which will cause the first cold air jet pipe 51 to produce a certain displacement due to factors such as vibration, and the conductive sheet 41 fixed on its outer wall will also slide from top to bottom on the resistor plate 42. The sliding rheostat composed of the conductive sheet 41 and the resistor plate 42 will gradually increase its resistance value as the conductive sheet 41 slides. According to the circuit principle, this change will affect the wind force regulation circuit, and then adjust the wind force of the first cold air jet pipe 51 and the second cold air jet pipe 52. The cold air sprayed through the first cold air jet pipe 51 and the second cold air jet pipe 52 will also cool the temperature of the processing area and accelerate air circulation.

[0031] When the drill rod 328 descends to a deeper position and the heat and impurities generated by drilling increase, the resistance of the sliding rheostat increases, and the current passing through the first cold air jet pipe 51 and the second cold air jet pipe 52 decreases, so that the wind force of the first cold air jet pipe 51 and the second cold air jet pipe 52 is reduced (the reason is that the distance between the two air outlet rings and the two cold air jet pipes becomes closer, so a larger wind force is not needed). The debris generated by drilling passes through the air outlet hole 43 of the operating table 1 and is blown into the collection box 44 under the action of the cold air, which is convenient for centralized cleaning. In addition, during the drilling process, the liquid pump 6 is started according to the instructions of the PLC controller. The liquid pump 6 draws coolant from the outside through the water suction pipe. The coolant is transported to the water spray head 8 through the telescopic drainage pipe 7. The water spray head 8 sprays the coolant onto the drill rod 328, further cooling and lubricating the drill rod 328, thereby improving the drilling quality and efficiency.

[0032] During the drilling process, the detection mechanism 4 monitors the drilling situation in real time. The light emitting ring 49 emits light, and multiple light receiving rings 47 nested in each other receive the light. If the debris generated by drilling passes through the first wind wall, it will block the light. The light received by the light receiving rings 47 at different positions changes differently, corresponding to different degrees of debris splashing, and can provide feedback on the drilling situation during the drilling process. If the debris enters the second wind wall, it will be blown downward by the second wind wall, and the infrared receiving ring 45 at the bottom of the operating table 1 and the light collecting ring 46 at the bottom of the annular plate will detect the debris. The PLC controller will detect the debris based on the signals from the infrared receiving ring 45 and the light collecting ring 46.

[0033] The degree of debris splashing is determined by two tests. If the degree of debris splashing is light (small amount of debris flying out at a close distance) and is an accidental situation, it can be observed. If the degree is heavy (large amount of debris flying out at a long distance) and is a continuous situation, the drill rod 328 may be severely worn or the cutting parameters may be abnormal, resulting in excessive kinetic energy of the chips flying and disordered shape. If this continues, it is easy to break through the second wind wall and cause equipment failure. Therefore, it is necessary to control the second motor 313 to flip through the PLC controller to make the drill rod 328 rise, and then control the third motor 324 to start and drive the rotating rod 325 to rotate through the third motor 324, so that the new drill rod 328 at the top is rotated 180 degrees, so that the new drill rod 328 and the old drill rod 328 are interchanged, thereby eliminating the root cause of cutting force fluctuations and high kinetic energy debris from the source, and at the same time avoiding the failure of the wind wall system due to continuous impact.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A protective drilling and milling machine for motor production, characterized in that: include: An operating table (1), wherein the top of the operating table (1) is fixedly connected to a protection box (2), and the inner wall of the protection box (2) is fixedly connected to an omnidirectional adjustment mechanism (3); A protection mechanism (5), the protection mechanism (5) comprising two mutually nested first cold air jet pipes (51) and second cold air jet pipes (52) arranged inside the protection box (2); a large air outlet ring (53) and a small air outlet ring (54) are provided at the bottom end of the protection box (2); the large air outlet ring (53) corresponds to the position of the first cold air jet pipe (51) in upper and lower positions; the small air outlet ring (54) corresponds to the position of the second cold air jet pipe (52) in upper and lower positions; the first cold air jet pipe (51) and the second cold air jet pipe (52) are fixedly connected by two symmetrical fixing rods (55); The detection mechanism (4) comprises a plurality of light receiving rings (47) fixedly connected to the bottom wall of the protection box (2), an isolation ring (48) is fixedly connected between each two light receiving rings (47), and the bottom end of the fixing rod (55) is fixedly connected to a light emitting ring (49).

2. A protective drilling and milling machine for motor production according to claim 1, characterized in that: The adjusting mechanism (3) includes a fixing block (31) fixedly connected to the inner wall of the protective box (2), an outer wall of the fixing block (31) fixedly connected to two symmetrical first limiting strips (32), the outer walls of the two first limiting strips (32) are slidably connected to a first fixing frame (33), the bottom end of the first fixing frame (33) is fixedly connected to a first threaded sleeve (34), the outer wall of the fixing block (31) is fixedly connected to a first mounting block (35) and a first mounting plate (36), the outer wall of the first mounting plate (36) is fixedly connected to a first motor (37), the output end of the first motor (37) is fixedly connected to a first threaded rod (38), the first threaded sleeve (34) is threadedly sleeved on the outer wall of the first threaded rod (38), and the other end of the first threaded rod (38) is rotatably connected to the outer wall of the first mounting block (35).

3. A protective drilling and milling machine for motor production according to claim 2, characterized in that: The outer wall of the first fixing frame (33) is fixedly connected to an electric telescopic rod (39), the telescopic end of the electric telescopic rod (39) is fixedly connected to a second fixing frame (310), both ends of the second fixing frame (310) are slidably connected to a second limit bar (311), the outer wall of the second limit bar (311) is fixedly connected to an L-shaped fixing plate (312), the top end of the L-shaped fixing plate (312) is fixedly connected to a second motor (313), the output end of the second motor (313) is fixedly connected to a second threaded rod (314), and the outer wall of the second fixing frame (310) is fixedly connected to a second threaded sleeve (315), the second threaded sleeve (315) is threadedly sleeved on the outer wall of the second threaded rod (314), the outer wall of the L-shaped fixing plate (312) is fixedly connected to the second mounting block (316), the other end of the second threaded rod (314) is rotatably connected to the outer wall of the second mounting block (316), the outer walls of both sides of the L-shaped fixing plate (312) are fixedly connected to two symmetrical connecting plates (317), the opposite sides of the two connecting plates (317) are fixedly connected to extension plates (318), and the other ends of the two extension plates (318) are respectively fixedly connected to the inner peripheral wall of the second cold air spray pipe (52).

4. A protective drilling and milling machine for motor production according to claim 3, characterized in that: The outer wall of the L-shaped fixing plate (312) is fixedly connected to a horizontal plate (319), the top end of the horizontal plate (319) is fixedly connected to a driving motor (320), the output end of the driving motor (320) is fixedly connected to a rotating drum (321), the outer wall of the rotating drum (321) is provided with an inlet and outlet groove (322), the bottom end of the rotating drum (321) is fixedly connected to two symmetrical vertical plates (323), the outer wall of one of the vertical plates (323) is fixedly connected to a third motor (324), the output end of the third motor (324) is fixedly connected to a rotating rod (325), the outer wall of the rotating rod (325) is fixedly connected to a rotating block (326), the top and bottom ends of the rotating block (326) are respectively fixedly connected to mounting sleeves (327), and the inner walls of both mounting sleeves (327) are detachably provided with drill rods (328).

5. The protective drilling and milling machine for motor production according to claim 4, characterized in that: The detection mechanism (4) further includes a conductive sheet (41) fixedly connected to the outer wall of the first cold air jet pipe (51), a resistor plate (42) fixedly connected to the inner wall of the protection box (2), the conductive sheet (41) and the resistor plate (42) are slidably connected, and the conductive sheet (41) and the resistor plate (42) constitute a sliding rheostat. When the conductive sheet (41) slides from top to bottom on the resistor plate (42), the resistance gradually increases. The sliding rheostat is electrically connected to the first cold air jet pipe (51) and the second cold air jet pipe (52) to form a wind force regulating circuit. An air outlet hole (43) is provided at the bottom end of the operating table (1).

6. The protective drilling and milling machine for motor production according to claim 4, characterized in that: The light emitting ring (49) and the light receiving ring (47) are electrically connected to a PLC controller, and the PLC controller is electrically connected to the third motor (324) to form a regulating loop. The large air outlet ring (53) and the small air outlet ring (54) are opened to form a circular block and an annular plate. Two symmetrical first connecting columns are fixedly connected between the large air outlet ring (53) and the annular plate, and two symmetrical second connecting columns are fixedly connected between the annular plate and the circular block. The bottom end of the operating table (1) is fixedly connected to a collecting box (44).

7. A protective drilling and milling machine for motor production according to claim 6, characterized in that: The bottom end of the operating table (1) is fixedly connected to an infrared receiving ring (45), and the bottom end of the annular plate is fixedly connected to a light collecting ring (46). The infrared receiving plate and the light collecting ring (46) are electrically connected to a PLC controller to form a detection alarm circuit.

8. The protective drilling and milling machine for motor production according to claim 6, characterized in that: The inner wall of the protection box (2) is fixedly connected to a liquid pump (6), the water pumping end of the liquid pump (6) is fixedly connected to an external water pumping pipe, the water discharge end of the liquid pump (6) is fixedly connected to a telescopic drainage pipe (7), the other end of the telescopic drainage pipe (7) is fixedly connected to a water spray head (8), the bottom end of the extension plate (318) is fixedly connected to a connecting block (9), the connecting block (9) is used to fix the telescopic drainage pipe (7), the water spray head (8) faces the drill rod (328), and the PLC controller is electrically connected to the first motor (37), the second motor (313), and the electric telescopic rod (39) to form a start-stop circuit.

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