A vertical multi-spindle machining center for motor housings

Abstract

The application relates to a vertical multi-axis machining center for a motor shell and relates to the technical field of vertical multi-axis machining centers, which comprises a fixed base, the outer surface of the fixed base is fixedly provided with a first motor, the output end of the first motor is fixedly connected with a first bidirectional screw rod, and the outer surface of the first bidirectional screw rod is rotationally connected with the fixed base. The first motor is started to drive the first bidirectional screw rod to rotate, the rotation of the first bidirectional screw rod drives two connecting frames to move towards or reversely along the first bidirectional screw rod, then the height of a clamping plate is adjusted to stably clamp motor shells of different specifications, then the height of a supporting frame is adjusted, a hydraulic rod is started to clamp the motor shell through extrusion blocks, then the motor shell is adjusted in angle by rotating the extrusion blocks, and the machining efficiency is improved, the clamping frequency is reduced, and the multi-surface machining precision is improved.

Description

Technical Field

[0001] This application relates to the field of vertical multi-axis machining center technology, and in particular to a vertical multi-axis machining center for motor housing. Background Technology

[0002] A vertical machining center is a highly automated, multi-functional CNC machine tool. It has a tool magazine and an automatic tool changer. After the workpiece is clamped once, the digital control system can control the machine tool to automatically select and change tools according to different processes, automatically change the spindle speed, feed rate, and tool movement trajectory relative to the workpiece, and other auxiliary skills to complete the machining tasks of multiple processes on several surfaces of the workpiece in sequence.

[0003] An existing patent (publication number: CN221474189U) discloses a vertical multi-axis machining center, including an outer shell and a top plate. The top plate is located on the upper side of the outer shell, and a Y-axis moving mechanism is provided between the top plate and the outer shell. The Y-axis moving mechanism includes guide rails located on both sides of the upper surface of the outer shell. The top plate is slidably connected to the guide rails. A lead screw Y is rotatably provided on the upper surface of the outer shell, and the lead screw Y is threadedly connected to the middle of the top plate. A motor Y with an output shaft connected to the lead screw Y is provided on the upper surface of the outer shell. An X-axis moving mechanism is provided on the front side of the top plate. A U-shaped plate is provided inside the outer shell. An A-axis rotation mechanism for driving the U-shaped plate to rotate is provided on one side of the outer shell. A C-axis rotation mechanism for driving the workpiece to rotate is provided inside the U-shaped plate. The advantages of this utility model are: it can perform machining at any angle in three-dimensional space, and can complete milling, drilling, tapping and other machining on multiple surfaces at one time, thus improving production efficiency.

[0004] The above solution uses multiple lead screws for feeding and is controlled by a CNC system, resulting in a high degree of automation. This allows the workpiece to be machined at any angle in three-dimensional space, enabling the processing of more complex parts and molds. It can complete milling, drilling, tapping, and other machining operations on multiple surfaces at once, reducing processing time and costs and improving production efficiency. However, this device requires multiple clamping operations during the machining of the motor housing, leading to frequent changes in the reference surface, large cumulative errors, and affecting overall accuracy. Utility Model Content

[0005] The purpose of this application is to provide a vertical multi-axis machining center for motor housings, which has the advantages of improving machining efficiency, reducing the number of clamping changes, and increasing the machining accuracy of multiple surfaces. It solves the problem that existing devices require milling, drilling, tapping and other machining on different surfaces of the motor housing, and traditional equipment requires multiple clamping, resulting in frequent changes of the reference surface, large cumulative errors and affecting the overall accuracy.

[0006] This application provides a vertical multi-axis machining center for motor housings, employing the following technical solution: It includes a fixed base, on the outer surface of which a first motor is fixedly mounted. The output end of the first motor is fixedly connected to a first bidirectional screw. The outer surface of the first bidirectional screw is rotatably connected to the fixed base. Two connecting frames are threaded onto the outer surface of the first bidirectional screw. A clamping plate is slidably connected to the outer surface of each connecting frame. Two fixed frames are fixedly connected to the upper surface of the fixed base. A support frame is slidably connected to the inner wall of each fixed frame. Hydraulic rods are fixedly mounted on the sides of the two support frames that are far apart from each other. An extrusion block is rotatably connected to the output end of each hydraulic rod.

[0007] By adopting the above technical solution, the fixed base bears the weight of the entire equipment, provides a stable installation foundation, and serves as the installation benchmark for all components. It is rigidly connected to the first motor and the fixed frame. When the first motor is started, its output end drives the first bidirectional screw to rotate around its own axis. Since the connecting frame is threadedly connected to the first bidirectional screw and the connecting frame is restricted by the fixed base, the rotation of the first bidirectional screw is converted into relative or opposite movement of the two connecting frames. This facilitates clamping the motor housing through the clamping plate. By moving the clamping plate to the height position between the corresponding connecting frames, it is convenient to clamp motor housings of different specifications. According to the height of the motor housing, the support frame slides along the inner wall of the fixed frame to adjust the hydraulic rod to a height suitable for the housing. Then, the hydraulic rod is started, and its output end extends, pushing the extrusion block to move towards the top of the motor housing until the extrusion block is tightly attached to the top surface of the housing, providing longitudinal clamping force. Then, by rotating the extrusion block, the angle of the motor housing can be adjusted by causing the motor housing to rotate, thereby improving processing efficiency and reducing the number of clamp changes.

[0008] Preferably, a controller is fixedly installed on the upper surface of each of the fixing frames, and a first screw is fixedly connected to the output end of each controller. The outer surface of each first screw is threadedly connected to the corresponding support frame.

[0009] By adopting the above technical solution, the controller receives instructions and drives the first screw to rotate, realizing automated control. Since the first screw is threadedly connected to the support frame, and the support frame is limited by the inner wall of the fixed frame and cannot rotate, the rotational motion of the first screw is converted into the vertical lifting motion of the support frame, which precisely adjusts the height position of the hydraulic rod and the extrusion block. Furthermore, the controller settings can regulate the rotation trajectory of the corresponding extrusion block, which facilitates the adjustment of the angle of the motor housing, reduces the processing cycle, and improves efficiency.

[0010] Preferably, a cleaning ring is fixedly connected to the outer surface of each of the connecting frames, and the inner wall of each cleaning ring is threadedly connected to the first bidirectional screw.

[0011] By adopting the above technical solution, since the cleaning ring is fixedly connected to the connecting frame and threadedly connected to the first bidirectional screw, when the first motor drives the first bidirectional screw to rotate, the cleaning ring will move laterally synchronously with the connecting frame. The inner wall of the cleaning ring is in close contact with the outer surface of the first bidirectional screw, and during the movement, it can automatically scrape off contaminants such as metal shavings, cutting fluid, and oil adhering to the screw surface.

[0012] Preferably, a second screw is rotatably connected to the inner wall of each connecting frame, the outer surface of each second screw is threadedly connected to the corresponding clamping plate, and a rotating wheel is fixedly connected to the top end of each second screw.

[0013] By adopting the above technical solution, rotating the wheel will drive the corresponding second screw to rotate. The rotation of the second screw will drive the corresponding clamping plate to slide vertically along the corresponding connecting frame. The bottom structure of different models of motor housings may be different. The height of the two clamping plates can be adjusted by the second screw to ensure that they are precisely fitted with the support surface at the bottom of the housing, avoiding instability caused by partial suspension.

[0014] Preferably, a workbench is fixedly connected to the upper surface of the fixed base, an operating table is fixedly connected to the upper surface of the fixed base, two support arms are fixedly connected to the outer surface of the operating table, and the outer surface of each support arm is fixedly connected to the fixed base. A guide groove is provided on the inner wall of the fixed base.

[0015] By adopting the above technical solution, the worktable, as the direct bearing surface of the motor housing, provides a stable machining reference for the workpiece. By placing the workpiece on the worktable surface, three-dimensional fixation is achieved through the clamping plate below and the pressing block above. The operating table is the control center of the equipment, integrating buttons, knobs, or a touch screen, which can input machining parameters, facilitate real-time display of equipment operating status, and facilitate operator monitoring. The stable support of the support arm prevents the operating table from shaking due to external forces during operation, ensuring the accuracy of control input. Metal chips and cutting fluid generated during machining flow into the guide chute through the gaps or inclined design on the worktable surface. The guide chute is usually designed with an inclined structure, using gravity to guide the waste to the collection device outside the fixed base, preventing chips from accumulating around the worktable or clamping system, preventing them from entering the screw drive mechanism and affecting the accuracy of the equipment, and improving the operating environment.

[0016] Preferably, each of the support arms has a guide rail groove on its outer surface, and a mounting bracket is provided above the fixed base. The outer surface of the mounting bracket is slidably connected to both guide rail grooves.

[0017] By adopting the above technical solution, the mounting bracket can move linearly along the guide rail groove of the support arm through the cooperation of the slider or roller. It is driven by a motor, and the high-precision machining of the guide rail groove ensures that the mounting bracket moves smoothly and has high positioning accuracy, meeting the precision machining requirements of the motor housing.

[0018] Preferably, a second motor is fixedly mounted on the outer surface of the mounting bracket, and a third screw is fixedly connected to the output end of the second motor. The outer surface of the third screw is rotatably connected to the mounting bracket.

[0019] By adopting the above technical solution, the second motor is started, which drives the third screw to rotate, and the outer surface is rotatably connected to the mounting bracket.

[0020] Preferably, the outer surface of the third screw is threaded with a connecting block, the outer surface of the connecting block is fixedly connected with a spindle box, the outer surface of the connecting block is slidably connected with the mounting bracket, and a control block is fixedly installed on the upper surface of the spindle box.

[0021] By adopting the above technical solution, when the second motor drives the third screw to rotate, the connecting block, due to its threaded engagement with the third screw and its limitation by the mounting frame, converts the rotational motion into linear movement along the mounting frame. The connecting block drives the spindle box to move synchronously, realizing the adjustment of the position of the machining tool in the direction perpendicular to the support arm. Combined with the movement of the mounting frame along the guide rail groove, a two-dimensional or three-dimensional machining feed system is formed to meet the multi-directional machining needs of the motor housing.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This vertical multi-axis machining center for motor housings comprises a fixed base, a first motor, a first bidirectional screw, connecting frames, a fixed frame, a clamping plate, a support frame, a hydraulic rod, and an extrusion block. Starting the first motor drives the first bidirectional screw to rotate, which in turn causes two connecting frames to move simultaneously along the screw in opposite directions. Adjusting the height of the clamping plate allows for stable clamping of motor housings of different specifications. Adjusting the height of the support frame and activating the hydraulic rod causes the extrusion block to clamp the motor housing. Rotating the extrusion block allows for angle adjustment of the motor housing. This design improves machining efficiency, reduces the number of clamp changes, and increases the precision of multi-faceted machining. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the fixing frame structure of this application; Figure 3 This is a schematic diagram of the operating table structure of this application; Figure 4This is a schematic diagram of the internal structure of the fixed base in this application; Figure 5 This is a schematic diagram of the connecting frame structure of this application.

[0024] In the picture: 1. Fixed base; 2. Guide chute; 3. Fixed frame; 4. Controller; 5. First screw; 6. Support frame; 7. Hydraulic rod; 8. Extrusion block; 9. Worktable; 10. First motor; 11. First bidirectional screw; 12. Connecting frame; 13. Cleaning ring; 14. Second screw; 15. Rotary wheel; 16. Clamping plate; 17. Operating table; 18. Support arm; 19. Guide rail groove; 20. Second motor; 21. Third screw; 22. Connecting block; 23. Control block; 24. Mounting frame; 25. Spindle box. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0026] Example 1: A vertical multi-axis machining center for motor housings, referring to... Figure 1 , Figure 4 , Figure 5 The system includes a fixed base 1, on the outer surface of which a first motor 10 is fixedly mounted. The output end of the first motor 10 is fixedly connected to a first bidirectional screw 11. The outer surface of the first bidirectional screw 11 is rotatably connected to the fixed base 1. Two connecting frames 12 are threadedly connected to the outer surface of the first bidirectional screw 11. Each connecting frame 12 has a clamping plate 16 slidably connected to its outer surface. The fixed base 1 bears the weight of the entire equipment, provides a stable installation foundation, and serves as the installation reference for all components. It is rigidly connected to the first motor 10 and the fixed frame 3. When the first motor 10 is started, its output end drives the first bidirectional screw 11 to rotate around its own axis. Since the connecting frame 12 is threadedly connected to the first bidirectional screw 11 and the connecting frame 12 is restricted by the fixed base 1, the rotation of the first bidirectional screw 11 is converted into relative or opposite movement of the two connecting frames 12. This facilitates clamping the motor housing through the clamping plate 16.

[0027] Reference Figure 1 , Figure 2 , Figure 4Two fixed frames 3 are fixedly connected to the upper surface of the fixed base 1. A support frame 6 is slidably connected to the inner wall of each fixed frame 3. A hydraulic rod 7 is fixedly installed on the side of the two support frames 6 that is far apart from each other. An extrusion block 8 is rotatably connected to the output end of each hydraulic rod 7. By moving the clamping plate 16 to the height position between the corresponding connecting frames 12, it is convenient to clamp motor housings of different specifications. According to the height of the motor housing, the support frame 6 is slid along the inner wall of the fixed frame 3 to adjust the hydraulic rod 7 to a height that matches the housing. Then, the hydraulic rod 7 is activated, and the output end of the hydraulic rod 7 extends, pushing the extrusion block 8 to move towards the top of the motor housing until the extrusion block 8 is tightly attached to the top surface of the housing, providing longitudinal clamping force. Then, by rotating the extrusion block 8, the motor housing can be rotated to adjust the angle of the motor housing, thereby improving processing efficiency and reducing the number of clamp changes.

[0028] Example 2: A vertical multi-axis machining center for motor housings, please refer to [link / reference]. Figure 2 , Figure 3 , Figure 4 Each fixed frame 3 has a controller 4 fixedly installed on its upper surface. The output end of each controller 4 is fixedly connected to a first screw 5. The outer surface of each first screw 5 is threadedly connected to the corresponding support frame 6. The controller 4 receives instructions and drives the first screw 5 to rotate, realizing automated control. Since the first screw 5 is threadedly connected to the support frame 6, and the support frame 6 is limited by the inner wall of the fixed frame 3 and cannot rotate, the rotational motion of the first screw 5 is converted into the vertical lifting motion of the support frame 6, which precisely adjusts the height position of the hydraulic rod 7 and the extrusion block 8. Furthermore, the controller 4 can be set to control the rotation trajectory of the corresponding extrusion block 8, which facilitates the adjustment of the angle of the motor housing, reduces the processing cycle, and improves efficiency.

[0029] Please see Figure 4 , Figure 5 Each connecting frame 12 has a cleaning ring 13 fixedly connected to its outer surface. The inner wall of each cleaning ring 13 is threadedly connected to the first bidirectional screw 11. Since the cleaning ring 13 is fixedly connected to both the connecting frame 12 and the first bidirectional screw 11, when the first motor 10 drives the first bidirectional screw 11 to rotate, the cleaning ring 13 will move laterally synchronously with the connecting frame 12. The inner wall of the cleaning ring 13 is in close contact with the outer surface of the first bidirectional screw 11. During the movement, it can automatically scrape off metal shavings, cutting fluid, oil and other contaminants attached to the screw surface.

[0030] Please see Figure 5Each connecting frame 12 has a second screw 14 rotatably connected to its inner wall. The outer surface of each second screw 14 is threadedly connected to the corresponding clamping plate 16. A rotating wheel 15 is fixedly connected to the top of each second screw 14. By rotating the rotating wheel 15, the rotating wheel 15 will drive the corresponding second screw 14 to rotate. The rotation of the second screw 14 will drive the corresponding clamping plate 16 to slide vertically along the corresponding connecting frame 12. The bottom structure of different models of motor housings may be different. The height of the two clamping plates 16 can be adjusted separately by the second screw 14 to ensure that they are precisely fitted with the support surface at the bottom of the housing and avoid unstable clamping caused by partial suspension.

[0031] Please see Figure 1 , Figure 2 , Figure 4 A worktable 9 is fixedly connected to the upper surface of the fixed base 1, and an operating table 17 is also fixedly connected to the upper surface of the fixed base 1. Two support arms 18 are fixedly connected to the outer surface of the operating table 17, and the outer surface of each support arm 18 is fixedly connected to the fixed base 1. A guide groove 2 is provided on the inner wall of the fixed base 1. The worktable 9 serves as the direct bearing surface of the motor housing, providing a stable processing benchmark for the workpiece. By placing the workpiece on the surface of the worktable 9, three-dimensional fixation is achieved through the clamping plate 16 below and the extrusion block 8 above. The operating table 17 is the control center of the equipment, integrating buttons, knobs, or touch screens. The screen allows input of processing parameters and facilitates real-time display of equipment operating status for operator monitoring. The stable support of the support arm 18 prevents the operating table 17 from shaking due to external forces during operation, ensuring the accuracy of control input. Metal chips and cutting fluid generated during processing flow into the guide trough 2 through gaps or inclined design on the surface of the worktable 9. The guide trough 2 is usually designed with an inclined structure, using gravity to guide the waste to the collection device outside the fixed base 1, preventing chips from accumulating around the worktable 9 or clamping system, preventing them from entering the screw drive mechanism and affecting equipment accuracy, and improving the operating environment.

[0032] Please see Figure 1 Each support arm 18 has a guide rail groove 19 on its outer surface. A mounting bracket 24 is provided above the fixed base 1. The outer surface of the mounting bracket 24 is slidably connected to the two guide rail grooves 19. The mounting bracket 24 cooperates with the guide rail grooves 19 of the support arm 18 through a slider or roller, and can move linearly along the guide rail grooves 19. It is driven by a motor. The high-precision machining of the guide rail grooves 19 ensures that the mounting bracket 24 moves smoothly and has high positioning accuracy, meeting the precision machining requirements of the motor housing.

[0033] Please see Figure 1 , Figure 3A second motor 20 is fixedly mounted on the outer surface of the mounting bracket 24. A third screw 21 is fixedly connected to the output end of the second motor 20. The outer surface of the third screw 21 is rotatably connected to the mounting bracket 24. When the second motor 20 is started, the second motor 20 will drive the third screw 21 to rotate, and its outer surface will be rotatably connected to the mounting bracket 24.

[0034] Please see Figure 1 , Figure 3 The outer surface of the third screw 21 is threaded with a connecting block 22, and the outer surface of the connecting block 22 is fixedly connected with a spindle box 25. The outer surface of the connecting block 22 is slidably connected with the mounting frame 24. A control block 23 is fixedly installed on the upper surface of the spindle box 25. When the second motor 20 drives the third screw 21 to rotate, the connecting block 22, due to its threaded engagement with the third screw 21 and its limitation by the mounting frame 24, converts the rotational motion into linear movement along the mounting frame 24. The connecting block 22 drives the spindle box 25 to move synchronously, realizing the position adjustment of the machining tool in the direction perpendicular to the support arm 18. With the movement of the mounting frame 24 along the guide rail groove 19, a two-dimensional or three-dimensional machining feed system is formed to meet the multi-directional machining needs of the motor housing.

[0035] The implementation principle of this application embodiment is as follows: First, the motor housing is placed on the workbench 9. Then, the first motor 10 drives the first bidirectional screw 11 to rotate. The rotation of the first bidirectional screw 11 will drive the two connecting frames 12 and the clamping plate 16 to move relative to each other, quickly reducing the lateral distance with the housing. By rotating the wheel 15 to drive the second screw 14, the height of the clamping plate 16 is finely adjusted so that it is precisely fitted with the bottom support surface of the housing, thereby facilitating the clamping of motor housings of different specifications. The controller 4 drives the first screw 5 to adjust the height of the support frame 6, and the hydraulic rod 7 pushes the rotatable extrusion block 8 to press the housing from the top. The bidirectional fixation is formed. After the processing of one side of the motor housing is completed, the first motor 10 is started in reverse so that the clamping plate 16 leaves the motor housing. Then, the height of the motor housing is adjusted by adjusting the controller 4. At this time, when the extrusion block 8 is rotated and the connecting frame 12 moves, the cleaning ring 13 simultaneously scrapes off the debris and oil stains on the surface of the first bidirectional screw 11 to ensure transmission accuracy. The second motor 20 drives the third screw 21 to rotate, and the main spindle box 25 slides along the mounting frame 24 through the connecting block 22. At the same time, the mounting frame 24 can move along the guide groove 19 of the support arm 18 to form a two-dimensional and three-dimensional processing path.

Claims

1. A vertical multi-axis machining center for motor housings, comprising a fixed base (1), characterized in that: A first motor (10) is fixedly installed on the outer surface of the fixed base (1). A first bidirectional screw (11) is fixedly connected to the output end of the first motor (10). The outer surface of the first bidirectional screw (11) is rotatably connected to the fixed base (1). Two connecting frames (12) are threadedly connected to the outer surface of the first bidirectional screw (11). A clamping plate (16) is slidably connected to the outer surface of each connecting frame (12). Two fixed frames (3) are fixedly connected to the upper surface of the fixed base (1). A support frame (6) is slidably connected to the inner wall of each fixed frame (3). A hydraulic rod (7) is fixedly installed on the side of the two support frames (6) that are far apart from each other. An extrusion block (8) is rotatably connected to the output end of each hydraulic rod (7).

2. The vertical multi-axis machining center for motor housing according to claim 1, characterized in that: Each of the fixed frames (3) has a controller (4) fixedly installed on its upper surface. Each of the controllers (4) has a first screw (5) fixedly connected to its output end. The outer surface of each first screw (5) is threadedly connected to the corresponding support frame (6).

3. The vertical multi-axis machining center for motor housing according to claim 1, characterized in that: Each of the connecting frames (12) has a cleaning ring (13) fixedly connected to its outer surface, and the inner wall of each cleaning ring (13) is threadedly connected to the first bidirectional screw (11).

4. A vertical multi-axis machining center for motor housing according to claim 3, characterized in that: Each of the connecting frames (12) has a second screw (14) rotatably connected to its inner wall. The outer surface of each second screw (14) is threadedly connected to the corresponding clamping plate (16). A rotating wheel (15) is fixedly connected to the top of each second screw (14).

5. A vertical multi-axis machining center for motor housing according to claim 1, characterized in that: The upper surface of the fixed base (1) is fixedly connected to a workbench (9), and the upper surface of the fixed base (1) is fixedly connected to an operating table (17). The outer surface of the operating table (17) is fixedly connected to two support arms (18). The outer surface of each support arm (18) is fixedly connected to the fixed base (1). The inner wall of the fixed base (1) is provided with a guide groove (2).

6. A vertical multi-axis machining center for motor housing according to claim 5, characterized in that: Each of the support arms (18) has a guide rail groove (19) on its outer surface. A mounting bracket (24) is provided above the fixed base (1). The outer surface of the mounting bracket (24) is slidably connected to the two guide rail grooves (19).

7. A vertical multi-axis machining center for motor housing according to claim 6, characterized in that: A second motor (20) is fixedly mounted on the outer surface of the mounting bracket (24), and a third screw (21) is fixedly connected to the output end of the second motor (20). The outer surface of the third screw (21) is rotatably connected to the mounting bracket (24).

8. A vertical multi-axis machining center for motor housing according to claim 7, characterized in that: The outer surface of the third screw (21) is threaded with a connecting block (22), the outer surface of the connecting block (22) is fixedly connected with a spindle box (25), the outer surface of the connecting block (22) is slidably connected with the mounting bracket (24), and the upper surface of the spindle box (25) is fixedly installed with a control block (23).

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