Machine tool for milling keyways on motor shafts for explosion-proof motor production

Abstract

The application discloses a motor shaft key groove milling machine for explosion-proof motor production and relates to the technical field of milling machine tools.The machine tool comprises a machining table, a Y-axis moving table, a milling machine and an X-axis moving table are arranged above the machining table, an adjusting mechanism for adjusting the position of the motor shaft is arranged above the Y-axis moving table, a chuck tool holder for replacing the milling cutter is arranged below the milling machine, and a Z-axis moving table is arranged on one side of the milling machine and above the machining table.The screw rotation drives the adjusting table to rotate counterclockwise by 90 degrees, and the adjusting table can drive the motor shaft to flip at this time.The shallow key groove processing is facilitated when the deep key groove processing of the motor shaft is completed, and the motor shaft does not need to be clamped multiple times in the process, achieving the effect of one-time clamping and multiple processes, and the stability and accuracy of the motor shaft during processing are improved as much as possible, a large amount of errors are avoided, and the accuracy of the motor shaft milling key groove is affected.

Description

Technical Field

[0001] This invention relates to the field of milling machine tool technology, and in particular to a keyway milling machine tool for producing explosion-proof motor shafts. Background Technology

[0002] An explosion-proof motor is a type of motor specifically designed for safe operation in hazardous environments where explosive gases or dust may be present. Its core design objective is to prevent electrical sparks, high temperatures, or mechanical friction sparks generated inside the motor from igniting surrounding explosive mixtures, thereby avoiding explosions. To achieve circumferential fixation and torque transmission between the motor shaft and other components (such as gears, couplings, pulleys, etc.), and to ensure that these components do not slip relative to the shaft during rotation, keyways are required on the motor shaft.

[0003] In the existing technology, the keyway on the surface of the motor shaft is machined by a milling machine. First, the motor shaft is clamped and fixed by a clamping device, and then the motor shaft is moved to a designated position and the milling cutter is controlled to mill the keyway on the motor shaft.

[0004] However, since the shaft of an explosion-proof motor needs to transmit a large torque, in order to ensure the stability of the torque transmitted by the motor shaft, axial deep keyways and radial shallow keyways are usually made on the surface of the motor shaft. When milling the deep keyway, the motor shaft and the milling cutter are in a perpendicular state, while when milling the shallow keyway, the motor shaft and the milling cutter are in a parallel state. After the deep keyway is milled, the motor shaft needs to be removed and re-clamped. After the motor shaft is vertically clamped, it is in a fixed state. Therefore, when milling the shallow keyway, the position of the motor shaft needs to be adjusted continuously to complete the annular shallow keyway machining on the surface of the motor shaft. After multiple clampings, new errors will be continuously introduced, which will reduce the milling accuracy of the motor shaft keyway. To address this, we propose a motor shaft keyway milling machine for the production of explosion-proof motors. Summary of the Invention

[0005] To address the issues of needing to continuously adjust the motor shaft position during shallow keyway milling to complete the annular shallow keyway machining on the motor shaft surface, and the introduction of new errors after multiple clamping operations, this invention adopts the following technical solution:

[0006] A keyway milling machine for producing explosion-proof motors includes a machining table. Above the machining table are a Y-axis moving table, a milling machine, and an X-axis moving table. Above the Y-axis moving table is an adjustment mechanism for adjusting the position of the motor shaft. Below the milling machine is a chuck for changing milling tools. A Z-axis moving table is located on one side of the milling machine above the machining table.

[0007] The adjustment mechanism includes a flip-up adjustment platform. A pair of connecting rods are fixedly connected to both sides of the adjustment platform. One end of each connecting rod is rotatably connected to a hinge block via a pin. A threaded block is fixedly connected below the hinge block. A screw is threadedly connected inside the threaded block. A rotary cylinder and a cooperating moving cylinder are respectively arranged above the adjustment platform. A swing rod is rotatably connected to one side of each connecting rod via a pin. A rotating rod is fixedly connected to one end of the swing rod. A mounting platform is rotatably connected below the rotating rod.

[0008] Preferably, the adjustment mechanism further includes a motor fixedly connected above the mounting platform. The output end of the motor is fixedly connected to a drive shaft. The drive shaft drives two belts to rotate synchronously through pulleys. The two belts drive two screws to rotate synchronously inside the mounting platform through pulleys respectively. A cooling pipe is provided above the adjustment platform.

[0009] Preferably, a limiting rod is fixedly connected to one side of the rotating rod, and two arc-shaped inserts are fixedly connected to the surface of the limiting rod. The surfaces of the two arc-shaped inserts are respectively fitted with corresponding arc-shaped sleeves, and the arc-shaped sleeves are fixedly connected to the mounting platform.

[0010] Preferably, an auxiliary mechanism for assisted positioning of the motor shaft is also provided above the Y-axis moving stage. The auxiliary mechanism includes an electric push rod fixedly connected inside the adjusting stage. An active rod is fixedly connected to the output end of the electric push rod. A top column is fixedly connected to one end of the active rod. A trapezoidal plate is slidably contacted above the top column. A moving frame is fixedly connected above the trapezoidal plate. Multiple top plates are fixedly connected above the moving frame. The top column is slidably connected to the adjusting stage.

[0011] Preferably, a wedge block is fixedly connected to one side of the movable frame, a sliding column is slidably contacted on the upper inclined surface of the wedge block, a pull rod is provided above the sliding column, a wedge-shaped pull plate is fixedly connected to one end of the pull rod, the wedge-shaped pull plate is slidably connected to the movable frame, a base plate is slidably contacted above the wedge-shaped pull plate, and a brush plate is detachably connected above the base plate.

[0012] Preferably, one end of the base plate has a push plate in sliding contact, the push plate is fixedly connected to the moving cylinder, a plurality of protrusions are provided on the side of the push plate that contacts the base plate, and a buffer spring is provided between the base plate and the Y-axis moving stage.

[0013] Preferably, the inner side of the adjustment platform is provided with an inclined groove, and the auxiliary mechanism also includes a gravity ball disposed inside the inclined groove. The surface of the gravity ball is rotatably connected to a ring sleeve. One end of the ring sleeve is detachably connected to a scraper. The end of the scraper that contacts the adjustment platform is telescopically configured. A pair of collection chambers are installed inside the adjustment platform.

[0014] Preferably, a limiting strip is slidably connected to the outer side of the ring sleeve, the limiting strip is fixedly connected to the adjusting platform, the limiting strip has the same size as the inclined groove, and a pair of baffles are provided inside the adjusting platform.

[0015] Preferably, a sealing gasket is provided at the sliding position of the movable frame and the adjustment table, the end of the base plate away from the push plate is slidably connected to the movable frame, and the sliding position is through-hole, and a return spring is provided at the sliding position of the sliding column and the adjustment table.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The screw rotation drives the adjusting table to rotate 90° counterclockwise. At this time, the adjusting table can drive the motor shaft to rotate. When the deep keyway machining of the motor shaft is completed, it is convenient to perform shallow keyway machining. Moreover, the motor shaft does not need to be clamped multiple times during this process, achieving the effect of multiple processes in one clamping. This maximizes the stability and accuracy of the motor shaft during machining and avoids introducing a large number of errors that would affect the accuracy of the keyway milling of the motor shaft.

[0018] 2. Multiple top plates, driven by a movable frame, support the motor shaft. Whether the motor shaft is in a horizontal or vertical position during keyway milling, the top plates can evenly distribute the pressure from the milling cutter, effectively protecting the motor shaft and preventing deformation during processing. Furthermore, by changing the contact force between the brush plate above the base plate and the motor shaft, the brush plate can effectively clean the iron filings remaining on the surface of the motor shaft during rotational processing, preventing iron filings from affecting the accuracy of shallow keyway machining.

[0019] 3. By adjusting the sliding of the gravity ball inside the adjustment table, the scraper can be driven to move inside the adjustment table, thereby cleaning and collecting the iron chips inside, preventing the iron chips from being rolled into the motor shaft during rotational machining, which would affect the normal contact between the milling cutter and the motor shaft, and improving the safety of machining the motor shaft again. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the adjustment mechanism on the Y-axis moving stage of the present invention;

[0022] Figure 3 This is a schematic diagram of the screw and mounting platform of the present invention;

[0023] Figure 4 This is a motion state diagram of the adjustment mechanism of the present invention;

[0024] Figure 5This is a schematic diagram of the arc-shaped insert rod and arc-shaped sleeve of the present invention;

[0025] Figure 6 This is a schematic diagram of the auxiliary mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the auxiliary mechanism of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the base plate and the push plate of the present invention;

[0028] Figure 9 For the present invention Figure 8 A magnified view of a section at point A in the middle;

[0029] Figure 10 This is a schematic diagram of the structure of the gravity ball and scraper of the present invention;

[0030] Figure 11 For the present invention Figure 10 The motion state diagram.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Machining table; 2. Y-axis moving table; 3. Milling machine; 4. X-axis moving table; 5. Adjustment mechanism; 501. Motor; 502. Drive shaft; 503. Belt; 504. Screw; 505. Adjustment table; 506. Rotary cylinder; 507. Hinge block; 508. Swing rod; 509. Rotating rod; 510. Connecting rod; 511. Mounting table; 512. Limiting rod; 513. Threaded block; 514. Matching moving cylinder; 515. Arc-shaped insert rod; 516. Arc-shaped... 6. Insert sleeve; 7. Z-axis moving stage; 7. Auxiliary mechanism; 701. Electric push rod; 702. Moving frame; 703. Inclined block; 704. Sliding column; 705. Pull rod; 706. Active rod; 707. Trapezoidal plate; 708. Top column; 709. Top plate; 710. Wedge-shaped pull plate; 711. Brush plate; 712. Base plate; 713. Push plate; 714. Gravity ball; 715. Scraper; 716. Ring sleeve; 717. Limiting strip; 8. Chuck handle; 9. Collection bin; 10. Baffle. Detailed Implementation

[0033] The technical solutions of the embodiments 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, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Refer to Figures 1 to 5A keyway milling machine for producing explosion-proof motors includes a machining table 1. A Y-axis moving table 2, a milling machine 3, and an X-axis moving table 4 are respectively arranged above the machining table 1. An adjustment mechanism 5 for adjusting the position of the motor shaft is arranged above the Y-axis moving table 2. A chuck 8 for changing milling tools is arranged below the milling machine 3. A Z-axis moving table 6 is arranged on one side of the milling machine 3 above the machining table 1.

[0035] The adjustment mechanism 5 includes a flip-up adjustment platform 505. A pair of connecting rods 510 are fixedly connected to both sides of the adjustment platform 505. One end of the connecting rod 510 is rotatably connected to a hinge block 507 via a pin. A threaded block 513 is fixedly connected to the lower part of the hinge block 507. A screw 504 is threadedly connected to the inside of the threaded block 513. A rotary cylinder 506 and a cooperating moving cylinder 514 are respectively arranged on the upper part of the adjustment platform 505. A swing rod 508 is rotatably connected to one side of the connecting rod 510 via a pin. A rotating rod 509 is fixedly connected to one end of the swing rod 508. A mounting platform 511 is rotatably connected to the lower part of the rotating rod 509.

[0036] During operation, when it is necessary to mill the deep keyway in the axial direction of the motor shaft, the adjusting table 505 and the rotary cylinder 506 are in a horizontal state. Then, the moving cylinder 514 is controlled to move away from the rotary cylinder 506 in the upper direction of the adjusting table 505, clamping the motor shaft of the explosion-proof motor to be milled onto one side of the rotary cylinder 506. The rotary cylinder 506 is started to clamp and fix one end of the motor shaft. After the motor shaft is clamped, the moving cylinder 514 is controlled to move closer to the rotary cylinder 506 in the upper direction of the adjusting table 505, thereby clamping and fixing both ends of the motor shaft.

[0037] After the motor shaft is fixed, the Y-axis moving table 2 drives the motor shaft to adjust in the front-to-back direction, and the X-axis moving table 4 drives the motor shaft to adjust in the left-to-right direction to accurately calibrate the machining position of the motor shaft. After the adjustment is completed, the Z-axis moving table 6 is started to control the milling machine 3 and the chuck 8 to move downward. At this time, the milling tool on the chuck 8 can mill the deep keyway in the axial direction of the motor shaft. After the deep keyway milling is completed, the screw 504 rotates to drive the threaded block 513 to slide inside the mounting table 511. At this time, the sliding of the threaded block 513 drives the upper hinge block 507 to move. The hinge block 507 pushes the adjusting table 505 on one side of the connecting rod 510 to rotate counterclockwise through the pin, thereby controlling the adjusting table 505 to rotate 90 degrees counterclockwise above the Y-axis moving table 2. The rotation of the adjusting table 505 can drive the motor shaft to rotate synchronously, so that the motor shaft changes from a horizontal state to a vertical state, which is convenient for machining the shallow keyway in the radial direction of the motor shaft.

[0038] It should be noted that, during the rotation of the adjustment table 505, in order to improve the stability of the rotation, a swing rod 508 is connected to the outside of the connecting rod 510 via a pin. At this time, the adjustment table 505 will push the swing rod 508 to rotate clockwise during the rotation. The swing rod 508 will drive the rotating rod 509 at one end to rotate above the mounting platform 511, thereby more smoothly driving the motor shaft inside the adjustment table 505 to adjust the angle. Furthermore, when the adjustment table 505 drives the motor shaft to adjust the angle, the rotary cylinder 506 and the cooperating moving cylinder 514 will always clamp the motor shaft. When the adjustment table 505 drives the motor shaft to rotate, the motor shaft is always in a clamped state, and multiple clamping operations are not required.

[0039] Furthermore, when the motor shaft changes from a horizontal to a vertical position, the milling cutter installed in the chuck 8 below the milling machine 3 is replaced with a flat-end milling cutter, and the rotary cylinder 506 is started to rotate slowly. At this time, the rotation of the rotary cylinder 506 will drive the motor shaft and the cooperating moving cylinder 514 at one end of the motor shaft to rotate synchronously. Then, the flat-end milling cutter inside the chuck 8 is controlled to contact the surface of the motor shaft, thereby completing the shallow keyway milling work in the radial direction of the motor shaft.

[0040] Reference Figures 1 to 5 The adjustment mechanism 5 also includes a motor 501 fixedly connected above the mounting platform 511. The output end of the motor 501 is fixedly connected to a drive shaft 502. The drive shaft 502 drives two belts 503 to rotate synchronously through pulleys. The two belts 503 drive two screws 504 to rotate synchronously inside the mounting platform 511 through pulleys respectively. A cooling pipe is provided above the adjustment platform 505.

[0041] During operation, in the initial state, when milling the deep keyway in the axial direction of the motor shaft, the motor 501 is stationary. The motor shaft is held in place by the rotary cylinder 506 and the moving cylinder 514. Then, the deep keyway is milled using a milling cutter installed in the chuck shank 8. After the keyway milling is completed, the motor 501 is started, driving the transmission shaft 502 to rotate. The rotation of the transmission shaft 502 drives multiple pulleys to rotate, which in turn drive a pair of screws 504 to rotate synchronously via belts. The rotation of the screws 504 drives the hinge block 507 above the threaded block 513 to move. The hinge block 507, via a pin, drives the adjusting table 505 to rotate counterclockwise by 90 degrees, thereby causing the motor shaft to rotate, changing the motor shaft from a horizontal to a vertical position. Figure 4 As shown;

[0042] Furthermore, when performing deep keyway machining on the motor shaft, coolant is sprayed through the cooling pipe above the adjusting table 505 to cool and lubricate the motor shaft being machined, ensuring the stability of the motor shaft during machining. Moreover, since the screw 504 and the threaded block 513 are in a threaded connection state, when the screw 504 rotates and drives the threaded block 513 to move to the designated position inside the mounting table 511, the shallow keyway machining on the motor shaft can avoid the motor shaft from shaking, effectively improving the stability of the motor shaft during machining.

[0043] Reference Figures 1 to 5 A limiting rod 512 is fixedly connected to one side of the rotating rod 509. Two arc-shaped insert rods 515 are fixedly connected to the surface of the limiting rod 512. The surfaces of the two arc-shaped insert rods 515 are respectively fitted with corresponding arc-shaped sleeves 516. The arc-shaped sleeves 516 are fixedly connected to the mounting platform 511.

[0044] During operation, when the connecting rod 510 pushes the swing rod 508 to swing clockwise via the pin, as... Figure 4 As shown, at this time, the rotating rod 509 at one end of the swing rod 508 will drive the limiting rod 512 to rotate synchronously by 30°. At this time, the rotation of the limiting rod 512 will drive the multiple arc-shaped inserts 515 fixedly connected to the surface to move into the arc-shaped sleeve 516. Since the arc-shaped inserts 515 and the arc-shaped sleeve 516 are both arc-shaped, when the arc-shaped inserts 515 are inserted into the arc-shaped sleeve 516, the rotating rod 509 at one end of the swing rod 508, supported by the adjusting platform 505, will not slip above the mounting platform 511. This allows the rotating rod 509 to stably drive the swing rod 508 and more stably support the adjusting platform 505, effectively improving the stability of the adjusting platform 505 after counterclockwise rotation.

[0045] Furthermore, since the connecting rod 510 is rotatably connected to the hinge block 507 and the swing rod 508 respectively through the pin, when the adjusting table 505 drives the motor shaft to be in a vertical state, the swing rod 508 will have a 30° angle with the adjusting table 505, so that the adjusting table 505, the mounting table 511 and the swing rod 508 form a triangular shape. According to the principle that triangles have stability, the stability of the motor shaft inside the adjusting table 505 during processing can be effectively guaranteed, and the stability of the motor shaft during milling can be improved.

[0046] Furthermore, when the adjustment table 505 and the mounting table 511 drive the motor shaft to rotate, in order to avoid jamming between the arc-shaped plug rod 515 and the arc-shaped plug sleeve 516, the rotation angle of the adjustment table 505 is set to less than or equal to 90°, which can effectively prevent interference between the arc-shaped plug rod 515 and the arc-shaped plug sleeve 516.

[0047] Example 2: Refer to Figures 6 to 11 Above the Y-axis moving stage 2, there is also an auxiliary mechanism 7 for auxiliary positioning of the motor shaft. The auxiliary mechanism 7 includes an electric push rod 701 fixedly connected inside the adjusting table 505. The output end of the electric push rod 701 is fixedly connected to an active rod 706. One end of the active rod 706 is fixedly connected to a top column 708. A trapezoidal plate 707 is slidably contacted above the top column 708. A moving frame 702 is fixedly connected above the trapezoidal plate 707. Multiple top plates 709 are fixedly connected above the moving frame 702. The top column 708 is slidably connected to the adjusting table 505.

[0048] During operation, when the chuck 8 drives the milling cutter to perform deep keyway milling on the motor shaft, since the motor shaft is in a horizontal state at this time, the milling cutter will apply pressure from top to bottom to the motor shaft after contacting it. In order to avoid deformation of the motor shaft when milling the middle part of the motor shaft;

[0049] By setting a pair of electric push rods 701 inside the adjustment table 505 to drive a pair of top columns 708 to move towards the center position of the adjustment table 505, the upper end of the top column 708 will contact the trapezoidal plate 707 fixed below the moving frame 702, thereby pushing the moving frame 702 to move upward inside the adjustment table 505, thereby pushing multiple top plates 709 above the moving frame 702 to contact the surface of the motor shaft. When the milling cutter installed in the chuck 8 applies pressure from top to bottom to the motor shaft, the pressure on the surface of the motor shaft will be transmitted to multiple top plates 709 and evenly distributed, thus avoiding the situation where the middle position of the motor shaft bends when milling the center position of the motor shaft.

[0050] Furthermore, after the deep keyway on the motor shaft surface is machined and rotated following the adjustment table 505, both ends of the motor shaft will not only rotate under the clamping and fixing of the rotary cylinder 506 and the moving cylinder 514, but also multiple top plates 709 will always be in contact with the surface of the motor shaft. On the one hand, this can ensure the stability of the motor shaft during rotation, and on the other hand, it can limit the position of the motor shaft so that it always maintains its original position, avoids the motor shaft from shifting, and improves the accuracy of subsequent shallow keyway machining.

[0051] It should be noted that after the motor shaft has been rotated, since the inside of the chuck 8 has been replaced with a flat-head milling cutter, when the milling cutter performs milling on the motor shaft, the motor shaft will be subjected to slight pressure from the milling cutter even when it comes into contact with the rotating milling cutter during rotation. At this time, the multiple top plates 709 can still fully distribute the pressure on the motor shaft, so that the motor shaft is always processed in a stable and precise state.

[0052] Reference Figures 7 to 8A wedge block 703 is fixedly connected to one side of the movable frame 702. A sliding column 704 is slidably contacted on the inclined surface above the wedge block 703. A pull rod 705 is provided above the sliding column 704. A wedge-shaped pull plate 710 is fixedly connected to one end of the pull rod 705. The wedge-shaped pull plate 710 is slidably connected to the movable frame 702. A base plate 712 is slidably contacted above the wedge-shaped pull plate 710. A brush plate 711 is detachably connected above the base plate 712.

[0053] During operation, when the moving frame 702 drives multiple top plates 709 to move upward and contact the surface of the motor shaft, the moving frame 702 will also drive the base plate 712 to move upward synchronously during the movement, thereby driving the brush plate 711 above the base plate 712 to contact the surface of the motor shaft. When the motor shaft is being processed in a vertical state, since the motor shaft is rotated by the rotary cylinder 506, the iron chips generated during the milling process will be swept away by the base plate 712, so that the surface of the motor shaft is always clean and tidy, and the iron chips can be avoided from affecting the processing effect of the motor shaft.

[0054] Furthermore, when the moving frame 702 moves upward, it will also drive the inclined block 703 to move. At this time, the inclined block 703 will push the sliding column 704 to move away from the motor shaft inside the adjusting table 505 through the inclined surface. At this time, the sliding column 704 will drive the pull rod 705 to move synchronously. The movement of the pull rod 705 will pull the wedge-shaped pull plate 710 to slide inside the moving frame 702. The sliding of the wedge-shaped pull plate 710 will push the brush plate 711 above the base plate 712 to fully contact the motor shaft through the inclined surface, which can change the force of the brush plate 711 contacting the motor shaft. When the motor shaft is rotating in a vertical state, the brush plate 711 can better clean the iron filings remaining on the surface of the motor shaft, which can further ensure the cleanliness of the motor shaft surface.

[0055] Reference Figures 7 to 8 One end of the base plate 712 has a sliding contact with a push plate 713. The push plate 713 is fixedly connected to the moving cylinder 514. Multiple protrusions are provided on the side of the push plate 713 that contacts the base plate 712. A buffer spring is provided between the base plate 712 and the Y-axis moving stage 2.

[0056] During operation, when the motor shaft held by the rotary cylinder 506 rotates, the cooperating moving cylinder 514 at the other end of the motor shaft also rotates synchronously. The rotation of the cooperating moving cylinder 514 will drive the push plate 713 to rotate synchronously. The rotation of the push plate 713 will push the base plate 712 to move laterally and reciprocally through multiple protrusions on the side near the base plate 712. When the brush plate 711 above the base plate 712 is in close contact with the motor shaft, it can clean the iron filings attached to the surface of the motor shaft in a wobbling manner, which can better clean the motor shaft.

[0057] Furthermore, when the push plate 713 pushes the base plate 712 to move via the protrusion, the base plate 712 will exert a thrust on the buffer spring installed inside the moving frame 702, causing the spring to deform. When the protrusion on one side of the push plate 713 stops pushing the base plate 712 to move, the buffer spring will cause the base plate 712 to return to its original position, so that one end of it is always in close contact with one side of the push plate 713, enabling the base plate 712 to stably drive the brush plate 711 to clean the iron filings on the surface of the motor shaft.

[0058] Reference Figures 10 to 11 The inner side of the adjustment platform 505 is provided with an inclined groove. The auxiliary mechanism 7 also includes a gravity ball 714 disposed inside the inclined groove. A ring 716 is rotatably connected to the surface of the gravity ball 714. A scraper 715 is detachably connected to one end of the ring 716. The end of the scraper 715 that contacts the adjustment platform 505 is telescopic. A pair of collection chambers 9 are installed inside the adjustment platform 505.

[0059] During operation, when the adjusting table 505 rotates the motor shaft, changing it from a horizontal to a vertical position, the gravity ball 714 inside the adjusting table 505 slides within the inclined groove on the inner side of the adjusting table 505. The gravity ball 714 then slides along the inclined groove towards the collection chamber 9, causing the rotating ring 716 on its surface to slide synchronously along the limiting strip 717. The ring 716 then drives the scraper 715 to scrape and slide towards the collection chamber 9 inside the adjusting table 505. Since the adjusting table 505 has just changed from a horizontal to a vertical position, and... After the deep keyway machining of the motor shaft is completed, the iron filings left during the deep keyway machining will slowly flow into the collection chamber 9 for collection as the adjusting table 505 rotates. For some iron filings with strong adhesion, the scraper 715 driven by the gravity ball 714 through the ring 716 will slide inside the adjusting table 505, so that the scraper 715 can scrape the iron filings inside the adjusting table 505 and sweep them into the collection chamber 9 for collection. This can effectively prevent the motor shaft from being affected by iron filings when rotating to perform shallow keyway machining.

[0060] Furthermore, since the contact point between the scraper 715 and the adjusting table 505 is telescopically designed, when the gravity ball 714 drives the scraper 715 to slide inside the adjusting table 505 via the ring 716, one end of the scraper 715 will always be in contact with the interior of the adjusting table 505, allowing the scraper 715 to stably clean the interior of the adjusting table 505. Additionally, because the inclined groove on the inner side of the adjusting table 505 is designed as... Figure 10 and 11 As shown, when the gravity ball 714 slides inside the inclined groove, it will generate a certain acceleration, which allows the scraper 715 to slide quickly inside the adjusting table 505 to clean the iron filings inside.

[0061] Reference Figures 10 to 11 The outer side of the ring 716 is slidably connected to a limiting strip 717, which is fixedly connected to the adjusting table 505. The limiting strip 717 has the same size as the inclined groove, and a pair of baffles 10 are provided inside the adjusting table 505.

[0062] During operation, when the adjusting table 505 drives the motor shaft to rotate synchronously, the gravity ball 714 slides inside the inclined groove. The ring 716 connected to its surface will slide inside the limiting strip 717 until the gravity ball 714 reaches the designated position inside the inclined groove. As the gravity ball 714 slides inside the inclined groove, it will move in an accelerated state. When the scraper 715 is close to the collection bin 9, it can better push the iron filings with strong adhesion inside the adjusting table 505 into the collection bin 9 for collection. Furthermore, the restriction of the ring 716 can prevent the scraper 715 from shifting position during movement, which can fully improve the scraper 715's effect and stability in cleaning iron filings.

[0063] Furthermore, by setting a pair of baffles 10 inside the adjusting platform 505, when the scraper 715 slides inside the adjusting platform 505, the scraper 715 will move on one side of the baffle 10. The baffle 10 can prevent iron filings and other objects from affecting the sliding effect of the moving frame 702 inside the adjusting platform 505. On the other hand, it can guide the iron filings that the adjusting platform 505 has just flipped into a vertical state to the inside of the collection bin 9, so that the collection bin 9 can collect them. When the iron filings collected in the collection bin 9 reach an appropriate amount, the collection bin 9 can be disassembled and cleaned.

[0064] Reference Figures 6 to 11 A sealing gasket is provided at the sliding position of the movable frame 702 and the adjustment table 505. The end of the base plate 712 away from the push plate 713 is slidably connected to the movable frame 702, and the sliding position is through-open. A return spring is provided at the sliding position of the sliding column 704 and the adjustment table 505.

[0065] During operation, by setting a sealing gasket at the position of the movable frame 702, when some iron filings enter the position between a pair of baffles 10 and come into contact with the surface of the movable frame 702, the sealing gasket can prevent the iron filings from interfering with the up-and-down movement of the movable frame 702 inside the adjustment table 505 and supporting the motor shaft. Furthermore, by setting a sliding connection between the base plate 712 and the movable frame 702, the brush plate 711 above the base plate 712 can be better controlled to clean the iron filings remaining on the surface of the motor shaft, preventing the motor shaft from being affected by iron filings during rotation processing, and effectively improving the cleaning effect of the brush plate 711 on the motor shaft.

[0066] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine tool for milling keyways on motor shafts for producing explosion-proof motors, comprising a machining table (1), characterized in that: Above the machining table (1) are respectively a Y-axis moving table (2), a milling machine (3) and an X-axis moving table (4). Above the Y-axis moving table (2) is an adjustment mechanism (5) for adjusting the position of the motor shaft. Below the milling machine (3) is a chuck for changing milling tools (8). On one side of the milling machine (3) above the machining table (1) is a Z-axis moving table (6). The adjustment mechanism (5) includes a flip-up adjustment platform (505). A pair of connecting rods (510) are fixedly connected to both sides of the adjustment platform (505). One end of the connecting rod (510) is rotatably connected to a hinge block (507) via a pin. A threaded block (513) is fixedly connected to the lower part of the hinge block (507). A screw (504) is threaded inside the threaded block (513). A rotary cylinder (506) and a cooperating moving cylinder (514) are respectively arranged above the adjustment platform (505). A swing rod (508) is rotatably connected to one side of the connecting rod (510) via a pin. A rotating rod (509) is fixedly connected to one end of the swing rod (508). A mounting platform (511) is rotatably connected to the lower part of the rotating rod (509). Above the Y-axis moving stage (2) is an auxiliary mechanism (7) for auxiliary positioning of the motor shaft. The auxiliary mechanism (7) includes an electric push rod (701) fixedly connected inside the adjusting table (505). The output end of the electric push rod (701) is fixedly connected to an active rod (706). One end of the active rod (706) is fixedly connected to a top column (708). A trapezoidal plate (707) slides in contact above the top column (708). A moving frame (702) is fixedly connected above the trapezoidal plate (707). A wedge block (703) is fixedly connected to one side of the movable frame (702). A sliding column (704) slides on the upper inclined surface of the wedge block (703). A pull rod (705) is provided above the sliding column (704). A wedge-shaped pull plate (710) is fixedly connected to one end of the pull rod (705). The wedge-shaped pull plate (710) is slidably connected to the movable frame (702). A base plate (712) slides on the upper surface of the wedge-shaped pull plate (710). A brush plate (711) is detachably connected above the base plate (712).

2. The keyway milling machine for producing explosion-proof motors according to claim 1, characterized in that: The adjustment mechanism (5) also includes a motor (501) fixedly connected above the mounting platform (511). The output end of the motor (501) is fixedly connected to a transmission shaft (502). The transmission shaft (502) drives two belts (503) to rotate synchronously through pulleys. The two belts (503) drive two screws (504) to rotate synchronously inside the mounting platform (511) through pulleys respectively. A cooling pipe is provided above the adjustment platform (505).

3. The keyway milling machine for producing explosion-proof motors according to claim 2, characterized in that: A limiting rod (512) is fixedly connected to one side of the rotating rod (509). Two arc-shaped inserts (515) are fixedly connected to the surface of the limiting rod (512). The surfaces of the two arc-shaped inserts (515) are respectively fitted with corresponding arc-shaped sleeves (516). The arc-shaped sleeves (516) are fixedly connected to the mounting platform (511).

4. The keyway milling machine for producing explosion-proof motors according to claim 1, characterized in that: Multiple top plates (709) are fixedly connected to the top of the movable frame (702), and the top column (708) is slidably connected to the adjustment platform (505).

5. A keyway milling machine for producing explosion-proof motors according to claim 4, characterized in that: One end of the base plate (712) is slidably in contact with a push plate (713). The push plate (713) is fixedly connected to the moving cylinder (514). Multiple protrusions are provided on the side of the push plate (713) that contacts the base plate (712). A buffer spring is provided between the base plate (712) and the Y-axis moving stage (2).

6. The keyway milling machine for producing explosion-proof motors according to claim 5, characterized in that: The inner side of the adjustment platform (505) is provided with an inclined groove. The auxiliary mechanism (7) also includes a gravity ball (714) disposed inside the inclined groove. The surface of the gravity ball (714) is rotatably connected with a ring (716). One end of the ring (716) is detachably connected with a scraper (715). The end of the scraper (715) that contacts the adjustment platform (505) is telescopically set. A pair of collection chambers (9) are installed inside the adjustment platform (505).

7. A keyway milling machine for producing explosion-proof motors according to claim 6, characterized in that: The outer side of the ring (716) is slidably connected to a limiting strip (717), the limiting strip (717) is fixedly connected to the adjusting platform (505), the limiting strip (717) has the same size as the inclined groove, and a pair of baffles (10) are provided inside the adjusting platform (505).

8. The keyway milling machine for producing explosion-proof motors according to claim 7, characterized in that: The sliding position of the movable frame (702) and the adjustment table (505) is provided with a sealing gasket. The end of the base plate (712) away from the push plate (713) is slidably connected to the movable frame (702), and the sliding position is through-open. The sliding position of the sliding column (704) and the adjustment table (505) is provided with a return spring.

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