A new type of motor shell numerical control processing machine tool

Abstract

The utility model relates to processing machine tool technical field, and disclose a novel motor casing numerical control processing machine tool, including main shaft bed body component, column knife tower component, automatic exchange workstation component and isolation protection part, column knife tower component assembly is in the right side of main shaft bed body component, automatic exchange workstation component is arranged in the left side of main shaft bed body component, and isolation protection part is located between front bed body and automatic exchange workstation component, longitudinal servo motor fixed mounting is in the right side bed body lower extreme of main shaft bed body component, the right side bed body lower extreme of main shaft bed body component is fixedly installed with first connecting seat, the inside rotation connection longitudinal ball screw of bearing is passed to first connecting seat, longitudinal ball screw surface screw thread is connected with longitudinal sliding plate, longitudinal servo motor output and longitudinal ball screw end fixed connection, be provided with horizontal guide rail on longitudinal sliding plate, horizontal guide rail surface sliding connection has horizontal sliding plate, and the upper end fixed setting of horizontal sliding plate has column.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically a novel CNC machine tool for machining motor housings. Background Technology

[0002] After the stator coils of medium and large electric motors are installed, they need to be precision machined by turning, milling, drilling and tapping on their end faces, base faces and various mounting surfaces and holes. The machining direction needs to cover multiple dimensions such as axial, radial and bottom surfaces, which places high demands on machining accuracy and efficiency.

[0003] Currently, the industry mostly adopts a decentralized processing mode for the precision machining of medium and large motor housings. This means that multiple single-function machines such as lathes, milling machines, and drilling machines are used to complete different processes. Before processing, the workpiece is manually hoisted onto the fixture of the corresponding machine tool, manually adjusted and positioned, and then tightened. After completing one process, the workpiece is manually disassembled and transferred to the next machine tool to repeat the loading, unloading, and positioning process.

[0004] However, the device is prone to workpiece machining datum deviation due to manual transfer and repeated positioning, making it difficult to guarantee the positional accuracy of multi-directional machining. Furthermore, the decentralized process connection is time-consuming, resulting in low overall machining efficiency. In view of this, we propose a new type of CNC machining tool for motor housings. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of CNC machining tool for motor housings to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel CNC machining tool for motor housings, comprising a spindle bed component, a column turret component, an automatic exchange table component, and an isolation and protection component. The column turret component is mounted on the right side of the spindle bed component, the automatic exchange table component is arranged on the left side of the spindle bed component, and the isolation and protection component is located between the front bed and the automatic exchange table component. The spindle bed component includes a spindle housing, a spindle, precision bearings, a tire expansion clamp, a hydraulic cylinder, a servo spindle motor, a toothed belt, pulleys, a magnetic grating, and a magnetic grating reading head. The spindle housing is detachably installed at the front right end of the bed. The spindle is mounted inside the spindle housing via precision bearings. The tire expansion clamp is located at the front end of the spindle. The hydraulic cylinder is installed at the rear end of the spindle, and a pull rod is fixedly installed at the end of the hydraulic cylinder. The servo spindle motor is fixedly installed on the side wall of the spindle housing via a mounting base. Pulleys are provided at both the end of the spindle near the hydraulic cylinder and the end of the servo spindle motor. Both sets of pulleys are connected by a toothed belt. The magnetic grating is located at the end of the spindle near the hydraulic cylinder, and the magnetic grating reading head is located at the end of the spindle housing.

[0007] Preferably, the tire expansion clamp includes an expansion chuck and a positioning ring, which are detachably mounted on the end of the main shaft. The tire expansion clamp has a clamping connecting rod inside, which is connected to the end of the pull rod at the end of the hydraulic cylinder. The precision bearing has three positions: front, middle, and rear.

[0008] Preferably, the column turret component includes a longitudinal guide rail, a longitudinal servo motor, a longitudinal ball screw, a longitudinal slide plate, a column, a transverse guide rail, a transverse servo motor, a transverse ball screw, a transverse slide plate, a vertical guide rail, a vertical servo motor, a vertical ball screw, a vertical slide plate, and a turret. The longitudinal guide rail is located on the right side of the spindle bed component. The longitudinal servo motor is fixedly installed at the lower end of the right side of the spindle bed component. A first connecting seat is fixedly installed at the lower end of the right side of the spindle bed component. The longitudinal ball screw is rotatably connected to the first connecting seat through a bearing. The longitudinal slide plate is threaded onto the surface of the longitudinal ball screw. The output end of the longitudinal servo motor and the end of the longitudinal ball screw are fixedly connected. A transverse guide rail is provided on the longitudinal slide plate. A transverse slide plate is slidably connected to the surface of the transverse guide rail. A column is fixedly installed at the upper end of the transverse slide plate.

[0009] Preferably, a horizontal servo motor and a second connecting seat are respectively provided on both sides of the upper end of the horizontal slide plate. A horizontal ball screw is rotatably connected inside the second connecting seat through a bearing. The output end of the horizontal servo motor and the end of the horizontal ball screw are fixedly connected. The lower end of the horizontal slide plate is threadedly connected to the surface of the horizontal ball screw through a sleeve. The vertical guide rail is provided in front of the column. A vertical servo motor and a third connecting seat are fixedly installed on the side wall of the column. A vertical ball screw is rotatably connected inside the third connecting seat through a bearing. The output shaft of the vertical servo motor and the end of the vertical ball screw are fixedly connected. A vertical slide plate is threadedly connected to the surface of the vertical ball screw. A tool turret is provided on the side wall of the vertical slide plate. The tool turret has 12 tool positions, including one turning tool position in each direction, and the rest are power tool positions for milling, drilling, and tapping.

[0010] Preferably, the automatic exchange worktable component includes a base, a longitudinal moving plate, a longitudinal motor, a longitudinal lead screw, two sets of independent transverse moving plates, two sets of independent transverse motors, and a motor housing positioning seat. The base is fixedly installed on the side wall of the spindle bed component. The longitudinal motor and a fourth connecting seat are fixedly installed on both sides of the upper surface of the base. The longitudinal lead screw is rotatably connected to the side wall of the fourth connecting seat through a bearing. The end of the longitudinal lead screw is fixedly connected to the output shaft of the longitudinal motor. The longitudinal moving plate is threadedly connected to the surface of the longitudinal moving plate. The transverse motor and a fifth connecting seat are fixedly installed on both sides of the upper surface of the longitudinal moving plate. The transverse lead screw is rotatably connected to the side wall of the fifth connecting seat through a bearing. The end of the transverse lead screw is fixedly connected to the end of the output shaft of the transverse motor. The transverse moving plate is threadedly connected to the surface of the transverse lead screw. A detachable motor housing positioning seat is provided on the upper surface of the transverse moving plate.

[0011] Preferably, the base and the sidewalls of the spindle bed component are arranged in parallel.

[0012] Preferably, the isolation and protection component is a safety guard, which is fixedly installed between the front bed of the spindle bed component and the automatic exchange table component.

[0013] Compared with the prior art, this utility model provides a novel CNC machining tool for motor housings, which has the following beneficial effects: 1. This new type of CNC machining tool for motor housing integrates multiple machining functions such as turning, milling, drilling, and tapping into one machine, eliminating the need for manual workpiece transfer and repetitive positioning. The spindle adopts a three-stage precision bearing and a magnetic grating closed-loop positioning system, achieving high-precision rotation and circumferential positioning. The three-axis servo feed mechanism of the column turret component ensures precise control of the cutting position. The overall machining accuracy is improved compared to traditional equipment. The automatic exchange worktable realizes alternating loading and unloading and continuous cycle operation through PLC logic control, which greatly shortens the process connection time. At the same time, the turret automatically switches tools without manual intervention.

[0014] 2. This new type of CNC machining tool for motor housings achieves automated loading, unloading, and transfer of workpieces by setting up an automatic exchange worktable component. Operators only need to clamp the workpieces to be processed and pick up and put away the workpieces after processing in a safe area. They do not need to participate in the heavy workpiece transfer and positioning work, which greatly reduces labor intensity. In addition, the safety guard effectively prevents chips and cutting fluid from splashing, avoiding safety threats to operators and contamination of workpieces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the spindle box of this utility model; Figure 3 This is a schematic diagram of the structure of the column turret component of this utility model; Figure 4 This is a schematic diagram of the structure of the automatic exchange workbench component of this utility model.

[0016] In the diagram: 1. Spindle bed assembly; 2. Column turret assembly; 3. Automatic exchange table assembly; 4. Isolation and protection components; 101. Spindle housing; 102. Spindle; 103. Precision bearing; 104. Tire expansion clamp; 105. Hydraulic cylinder; 106. Servo spindle motor; 107. Toothed belt; 108. Pulley; 109. Magnetic grid; 1041. Tire release chuck; 201. Longitudinal guide rail; 202. Longitudinal servo motor; 203. Longitudinal ball screw; 204. Longitudinal slide plate; 205. Column; 206. Horizontal guide rail; 207. Horizontal servo motor; 209. Horizontal slide plate; 210. Vertical guide rail; 211. Vertical servo motor; 212. Vertical ball screw; 213. Vertical slide plate; 214. Turret; 301. Base; 302. Longitudinal moving plate; 303. Longitudinal motor; 304. Longitudinal screw; 305. Horizontal moving plate; 306. Horizontal motor; 307. Motor housing positioning seat; 41. Safety guard; 1042. Clamping rod. Detailed Implementation

[0017] like Figures 1-4 As shown, this utility model provides a technical solution: a novel CNC machining tool for motor housings, including a spindle bed component 1, a column turret component 2, an automatic exchange table component 3, and an isolation and protection component 4. The column turret component 2 is mounted on the right side of the spindle bed component 1, the automatic exchange table component 3 is arranged on the left side of the spindle bed component 1, and the isolation and protection component 4 is located between the front bed and the automatic exchange table component 3. The spindle bed component 1 includes a spindle housing 101, a spindle 102, a precision bearing 103, a tire expansion clamp 104, a hydraulic cylinder 105, a servo spindle motor 106, a toothed belt 107, a pulley 108, a magnetic grating 109, and a magnetic grating reading head. The spindle housing 101 is detachably installed at the front right end of the bed. The spindle 102 is installed inside the spindle housing 101 via the precision bearing 103. The tire expansion clamp 104 is located at the front end of the spindle 102, and the hydraulic cylinder 105 is installed at the rear end of the spindle 102. The end of the hydraulic cylinder 105 is fixed. A tie rod is installed, and the servo spindle motor 106 is fixedly mounted on the side wall of the spindle housing 101 via a mounting bracket. Both the end of the spindle 102 near the hydraulic cylinder 105 and the end of the servo spindle motor 106 are equipped with pulleys 108, which are connected by a toothed belt 107. A magnetic grating 109 is located at the end of the spindle 102 near the hydraulic cylinder 105, and a magnetic grating reading head is located at the end of the spindle housing 101. The tire expansion clamp 104 includes an expansion release chuck 1041 and a positioning ring, which are detachably mounted on... At the end of the spindle 102, a clamping link 1042 is provided inside the expansion clamp 104. The clamping link 1042 is connected to the end of the pull rod at the end of the hydraulic cylinder 105. The precision bearing 103 includes three positions: front, middle, and rear. The column turret component 2 includes a longitudinal guide rail 201, a longitudinal servo motor 202, a longitudinal ball screw 203, a longitudinal slide plate 204, a column 205, a transverse guide rail 206, a transverse servo motor 207, a transverse ball screw, a transverse slide plate 209, a vertical guide rail 210, a vertical servo motor 211, and a vertical ball screw. The spindle 212, vertical slide 213, and turret 214 are provided. The longitudinal guide rail 201 is set on the right side of the spindle bed component 1. The longitudinal servo motor 202 is fixedly installed at the lower end of the right side of the spindle bed component 1. A first connecting seat is fixedly installed at the lower end of the right side of the spindle bed component 1. The longitudinal ball screw 203 is rotatably connected to the first connecting seat through a bearing. The longitudinal slide 204 is threadedly connected to the surface of the longitudinal ball screw 203. The output end of the longitudinal servo motor 202 and the end of the longitudinal ball screw 203 are fixedly connected.A transverse guide rail 206 is provided on the longitudinal slide plate 204. A transverse slide plate 209 is slidably connected to the surface of the transverse guide rail 206. A column 205 is fixedly installed at the upper end of the transverse slide plate 209. A transverse servo motor 207 and a second connecting seat are respectively provided on both sides of the upper end of the transverse slide plate 209. A transverse ball screw is rotatably connected to the second connecting seat through a bearing. The output end of the transverse servo motor 207 and the end of the transverse ball screw are fixedly connected. The lower end of the transverse slide plate 209 is threadedly connected to the surface of the transverse ball screw through a sleeve. A vertical guide rail 21 is provided. The 0 is located in front of the column 205. A vertical servo motor 211 and a third connecting seat are fixedly installed on the side wall of the column 205. A vertical ball screw 212 is rotatably connected to the third connecting seat through a bearing. The output shaft of the vertical servo motor 211 and the end of the vertical ball screw 212 are fixedly connected. A vertical slide plate 213 is threaded onto the surface of the vertical ball screw 212. A turret 214 is provided on the side wall of the vertical slide plate 213. The turret 214 has 12 tool positions, including one turning tool position in each direction, and the rest are power tool positions for milling, drilling, and tapping. The automatic exchange table component 3 includes a base 301, a longitudinal moving plate 302, a longitudinal motor 303, a longitudinal lead screw 304, two sets of independent transverse moving plates 305, two sets of independent transverse motors 306, and a motor housing positioning seat 307. The base 301 is fixedly installed on the side wall of the spindle bed component 1. The longitudinal motor 303 and the fourth connecting seat are fixedly installed on both sides of the upper surface of the base 301. The longitudinal lead screw 304 is rotatably connected to the side wall of the fourth connecting seat through bearings. The end of the longitudinal lead screw 304 and the output of the longitudinal motor 303 are connected to the longitudinal motor 303. The shaft is fixedly connected, and a longitudinal moving plate 302 is threadedly connected to the surface of the longitudinal lead screw 304. A transverse motor 306 and a fifth connecting seat are fixedly installed on both sides of the upper surface of the longitudinal moving plate 302. A transverse lead screw is rotatably connected to the side wall of the fifth connecting seat via bearings. The end of the transverse lead screw is fixedly connected to the end of the output shaft of the transverse motor 306. A transverse moving plate 305 is threadedly connected to the surface of the transverse lead screw. A detachable motor housing positioning seat 307 is provided on the upper surface of the transverse moving plate 305. The base 301 and the side wall of the spindle bed component 1 are arranged parallel to each other.

[0018] In this embodiment of the invention, the spindle bed component 1, as the core load-bearing and power output unit of the machine tool, is fundamental to ensuring machining accuracy. It integrates multiple functions such as driving, positioning, and clamping. The spindle housing 101 is integrally formed from high-strength cast iron, possessing excellent rigidity and vibration resistance. It is detachably installed at the front right end of the bed for easy maintenance and repair. The spindle 102, the core rotating component of the machine tool, is machined from high-quality alloy steel and its surface is treated with high-frequency quenching and precision grinding, possessing high strength and high wear resistance. It is installed inside the spindle housing 101 via three precision bearings 103 (front, middle, and rear). These three bearings are evenly spaced along the axial direction of the spindle 102, providing stable support for the spindle 102 and effectively ensuring its rotational accuracy. Simultaneously, they can withstand the axial and radial cutting forces generated during machining, preventing spindle 102 from shifting or vibrating. The expansion clamp 104, located at the front end of the spindle 102, is a key component for workpiece clamping and positioning. It includes an expansion chuck 1041, a positioning ring, and a clamping connecting rod 1042. Both the expansion chuck 1041 and the positioning ring are detachable, allowing for quick replacement to accommodate the inner hole size and external structure of different motor housing models, thus adapting to the processing needs of various workpiece specifications. The clamping connecting rod 1042 is internally housed within the expansion clamp 104, with one end connected to the expansion chuck 1041 and the other end fixedly connected to the pull rod at the end of the hydraulic cylinder 105. The extension and retraction of the hydraulic cylinder 105 drives the expansion chuck 1041 to open or retract along the outer cone of the clamp, achieving firm clamping and rapid release of the stator inner hole within the motor housing. The clamping force is uniform and stable, preventing workpiece displacement during processing. Hydraulic cylinder 105 is mounted at the tail end of spindle 102 and adopts a double-acting design, featuring fast response, large thrust, and smooth operation. A high-strength tie rod is fixedly mounted at its end, precisely engaging with clamping linkage 1042. Precise control of the clamping action is achieved through pressure control of the hydraulic system. Servo spindle motor 106 is fixedly mounted on the side wall of spindle housing 101 via a mounting base. It is a high-precision servo drive motor with advantages such as a wide speed adjustment range, stable output torque, and high positioning accuracy. Both ends of servo spindle motor 106 and the end of spindle 102 closest to hydraulic cylinder 105 are equipped with pulleys 108. The two sets of pulleys 108 are connected by a toothed belt 107. The toothed belt 107 uses a polyurethane material with embedded steel wire, offering high transmission efficiency, low noise, and good synchronization. It can precisely transmit the power of servo spindle motor 106 to spindle 102, driving spindle 102 to rotate at a preset speed. The magnetic grating 109 is located at one end of the spindle 102 near the hydraulic cylinder 105. The magnetic grating reading head is fixedly located at the end of the spindle housing 101. The magnetic grating 109 adopts high-precision magnetic encoding technology, which can collect the circumferential position signal of the spindle 102 in real time and transmit it to the machine tool control system through the magnetic grating reading head. The control system adjusts the running status of the servo spindle motor 106 in real time according to the feedback signal.

[0019] The column turret assembly 2 is the core unit for realizing multi-directional cutting and tool switching. It has longitudinal, transverse, and vertical three-axis feed functions and can complete multiple machining operations such as turning, milling, drilling, and tapping. The longitudinal guide rail 201 adopts a linear rolling guide rail and is fixedly installed on the right side of the spindle bed assembly 1. It has the characteristics of high guiding accuracy, low friction coefficient, and strong load-bearing capacity, providing stable support for the movement of the longitudinal slide 204. The longitudinal servo motor 202 is fixedly installed at the lower end of the right side of the spindle bed assembly 1 and uses a high-precision servo motor. The machine, equipped with a planetary gear reducer, has a large output torque and smooth operation. Its output end is fixedly connected to the end of the longitudinal ball screw 203. The longitudinal ball screw 203 is rotatably connected to the first connecting seat at the lower end of the right side of the spindle bed component 1 via bearings. It adopts a high-precision ball screw pair, which has high transmission efficiency and accurate positioning. Its surface is threaded to the longitudinal slide plate 204. The longitudinal slide plate 204 is driven by the forward and reverse rotation of the longitudinal servo motor 202 to move smoothly longitudinally along the longitudinal guide rail 201, realizing the longitudinal adjustment of the cutting position. The longitudinal slide plate 204 is forged from high-strength aluminum alloy, combining lightweight and high rigidity. Its surface is equipped with a transverse guide rail 206, which is also a linear rolling guide rail. This guide rail works in conjunction with the slider on the surface of the transverse slide plate 209 to achieve precise guidance of the transverse slide plate 209. A column 205 is fixedly mounted on the upper end of the transverse slide plate 209. The column 205 is integrally formed from cast iron and has an internal reinforcing rib structure, providing good vibration resistance and stability, and reliable support for the vertical feed mechanism. A transverse servo motor 207 and a second connecting seat are respectively located on both sides of the upper end of the transverse slide plate 209. A transverse ball screw is rotatably connected to the second connecting seat via a bearing. One end of the ball screw is fixedly connected to the output end of the transverse servo motor 207, and the other end is threadedly connected to a sleeve at the lower end of the transverse slide plate 209. The transverse servo motor 207 drives the transverse ball screw to rotate, causing the transverse slide plate 209 to perform transverse cutting feed along the transverse guide rail 206, achieving fine-tuning of the machining position laterally. The vertical guide rail 210 is located in front of the column 205 and adopts a vertically arranged linear rolling guide rail, which has high guiding accuracy and strong load-bearing capacity. The vertical slide plate 213 is slidably connected to the vertical guide rail 210 through a slider, and can move vertically along the column 205. A vertical servo motor 211 and a third connecting seat are fixedly installed on the side wall of the column 205. The vertical ball screw 212 is rotatably connected to the inside of the third connecting seat through a bearing. Its upper end is fixedly connected to the output shaft of the vertical servo motor 211, and its surface is threaded to the vertical slide plate 213. The vertical servo motor 211 drives the vertical ball screw 212 to rotate, which drives the vertical slide plate 213 and the turret 214 to move smoothly vertically along the vertical guide rail 210, meeting the processing requirements of different height directions such as end face and hole depth. The turret 214 is fixedly mounted on the side wall of the vertical slide plate 213. It adopts an electric turret structure and has 12 tool positions, including one tool position each for forward and reverse turning, used for forward and reverse turning of the workpiece, respectively. The remaining 10 tool positions are all powered tool positions, which can be equipped with various tools such as milling cutters, drills, and taps to realize composite machining such as milling, drilling, and tapping. The tool switching of the turret 214 is driven by a servo motor, which has fast switching speed and precise positioning. It can automatically switch the required tools according to the machining program without manual intervention, which greatly improves the machining efficiency and the smoothness of process connection.

[0020] The automatic worktable component 3 is the core unit for realizing automatic workpiece loading and unloading and cyclic operation. It can effectively reduce manual labor intensity and improve processing efficiency. The base 301 is made of cast iron and is fixedly installed on the side wall of the spindle bed component 1, and is set parallel to the side wall of the spindle bed component 1 to ensure the consistency of positioning accuracy between the worktable and the spindle 102. The longitudinal motor 303 and the fourth connecting seat are fixedly installed on both sides of the upper surface of the base 301. The longitudinal lead screw 304 is rotatably connected to the side wall of the fourth connecting seat through a bearing, and its end is fixedly connected to the output shaft of the longitudinal motor 303. The surface of the longitudinal lead screw 304 is threadedly connected to the longitudinal moving plate 302. The longitudinal motor 303 drives the longitudinal lead screw 304 to rotate, which drives the longitudinal moving plate 302 to perform longitudinal feeding movement along the upper surface of the base 301, realizing the transfer of workpieces between the loading / unloading position and the processing position. The longitudinal moving plate 302 is welded from high-strength structural steel. A transverse motor 306 and a fifth connecting seat are fixedly mounted on both sides of its surface. A transverse lead screw is rotatably connected to the side wall of the fifth connecting seat via bearings, and its end is fixedly connected to the end of the output shaft of the transverse motor 306. The surface of the transverse lead screw is threadedly connected to the transverse moving plate 305. The two sets of transverse moving plates 305 are independent of each other and are driven by their respective transverse motors 306, enabling independent transverse fine-tuning. This ensures that the workpiece can be accurately aligned with the expansion clamp 104 at the front end of the spindle 102. A detachable motor housing positioning seat 307 is provided on the upper surface of the transverse moving plate 305. The positioning seat adopts a modular design and can be quickly replaced according to the shape and structure of different motor housing models. The replacement process does not require adjustment of other parts of the worktable, significantly shortening product changeover time. The automatic exchange workbench component 3 achieves automated operation through a PLC logic control system. Two sets of transverse moving plates 305 can alternately perform loading and unloading operations. When one set of workpieces is being processed in the processing area, the other set of transverse moving plates 305 can complete the clamping of the workpiece to be processed in a safe area. After processing is completed, the workpieces can be quickly switched to achieve continuous cycle operation, which greatly improves processing efficiency.

[0021] Please continue reading. Figures 1-4 The isolation and protection component 4 is a safety guard 41, which is fixedly installed between the front bed of the spindle bed component 1 and the automatic exchange worktable component 3.

[0022] In this embodiment of the invention, the isolation and protection component 4 is a safety guard 41, which is made of transparent polycarbonate sheet and steel frame. It ensures protection strength and allows operators to observe the processing process. The safety guard 41 is fixedly installed between the front bed of the spindle bed component 1 and the automatic exchange table component 3, and is connected to the machine tool control system to achieve coordinated linkage between the protection action and the processing flow. When the machine tool performs cutting, the safety guard 41 automatically closes, completely isolating the processing area from the automatic exchange table component 3, effectively preventing chips from splashing and contaminating the workpiece or causing safety hazards. At the same time, it prevents cutting fluid from splashing into the loading and unloading area and affecting the cleanliness of the workpiece. When the machine tool performs loading and unloading operations, the safety guard 41 automatically opens to avoid the workpiece transfer path and ensure smooth workpiece transfer, which ensures both operational safety and processing efficiency.

[0023] During operation, after starting the machine tool, the operator places the workpiece to be processed on the motor housing positioning seat 307 of the automatic exchange worktable component 3, inputs the processing parameters and program through the control panel, and starts the automatic processing flow. The longitudinal motor 303 drives the longitudinal lead screw 304 to rotate, which drives the longitudinal moving plate 302 to move longitudinally, moving the transverse moving plate 305 carrying the workpiece to the loading position near the spindle 102. Then, the transverse motor 306 drives the transverse lead screw to rotate, which drives the transverse moving plate 305 to make transverse fine adjustments, so that the workpiece is accurately aligned with the expansion chuck of the expansion clamp 104. 1041. After the workpiece is in place, the control system sends a signal, and the hydraulic cylinder 105 starts. Its piston rod pulls the clamping connecting rod 1042 through the tie rod, driving the release chuck 1041 to open along the outer cone of the fixture, firmly clamping the stator inner hole in the motor housing, completing the positioning and fixing of the workpiece. At the same time, the safety guard 41 automatically closes, isolating the processing area from the loading and unloading area. Next, the servo spindle motor 106 drives the spindle 102 to rotate at a preset speed through the toothed belt 107 and pulley 108. The longitudinal servo motor 202, the transverse servo motor 207, and the vertical servo motor 208 of the column turret component 2... Servo motors 211 drive the longitudinal ball screw 203, transverse ball screw, and vertical ball screw 212 to rotate, thereby causing the longitudinal slide 204, transverse slide 209, vertical slide 213, and turret 214 to perform three-axis feed motion. The turret 214 automatically switches to the corresponding tool according to the machining program, sequentially completing machining operations such as turning, milling, drilling, and tapping on the motor housing end face, machine base surface, mounting surface, and holes. During machining, the magnetic grating 109 and the magnetic grating reading head collect the circumferential position signal of the spindle 102 in real time and feed it back to the control system to achieve precise positioning and ensure machining accuracy. After the workpiece is processed, the turret 214 returns to the safe position, the servo spindle motor 106 stops running, the hydraulic cylinder 105 reverses its movement, causing the release chuck 1041 to retract and release the processed workpiece. The safety guard 41 automatically opens, and the horizontal motor 306 and vertical motor 303 of the automatic exchange worktable component 3 drive the horizontal moving plate 305 and vertical moving plate 302 to reset, transferring the processed workpiece to the unloading area. At the same time, another set of horizontal moving plates 305 carrying the workpiece to be processed is automatically moved to the loading position, repeating the above processing flow to achieve continuous cyclic operation.

[0024] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A novel CNC machining tool for motor housings, comprising a spindle bed assembly (1), a column turret assembly (2), an automatic exchange worktable assembly (3), and an isolation and protection assembly (4), characterized in that: The column turret component (2) is assembled on the right side of the spindle bed component (1), the automatic exchange table component (3) is arranged on the left side of the spindle bed component (1), and the isolation and protection component (4) is located between the front bed and the automatic exchange table component (3). The spindle bed component (1) includes a spindle housing (101), a spindle (102), a precision bearing (103), a tire expansion clamp (104), a hydraulic cylinder (105), a servo spindle motor (106), a toothed belt (107), a pulley (108), a magnetic grating (109), and a magnetic grating reading head. The spindle housing (101) is detachably installed at the front right end of the bed. The spindle (102) is installed inside the spindle housing (101) via the precision bearing (103). The tire expansion clamp (104) is located at the front end of the spindle (102). The hydraulic cylinder (105)... The hydraulic cylinder (105) is fixedly mounted with a pull rod at the end of the spindle (102). The servo spindle motor (106) is fixedly mounted on the side wall of the spindle housing (101) by a mounting seat. The spindle (102) near the hydraulic cylinder (105) and the servo spindle motor (106) are both provided with pulleys (108). The two sets of pulleys (108) are connected by a toothed belt (107). The magnetic grating (109) is located at the end of the spindle (102) near the hydraulic cylinder (105). The magnetic grating reading head is located at the end of the spindle housing (101).

2. The novel CNC machining tool for motor housings according to claim 1, characterized in that: The tire expansion clamp (104) includes an expansion chuck (1041) and a positioning ring. The expansion chuck (1041) and the positioning ring are detachably installed at the end of the main shaft (102). The tire expansion clamp (104) is provided with a clamping connecting rod (1042) inside. The clamping connecting rod (1042) is connected to the end of the pull rod at the end of the hydraulic cylinder (105). The precision bearing (103) includes three positions: front, middle and rear.

3. The novel CNC machining tool for motor housings according to claim 1, characterized in that: The column turret assembly (2) includes a longitudinal guide rail (201), a longitudinal servo motor (202), a longitudinal ball screw (203), a longitudinal slide plate (204), a column (205), a transverse guide rail (206), a transverse servo motor (207), a transverse ball screw, a transverse slide plate (209), a vertical guide rail (210), a vertical servo motor (211), a vertical ball screw (212), a vertical slide plate (213), and a turret (214). The longitudinal guide rail (201) is located on the right side of the spindle bed assembly (1), and the longitudinal servo motor (202) is fixedly mounted on the spindle bed assembly (1). The lower right side of the spindle bed component (1) is fixedly installed with a first connecting seat. The first connecting seat is rotatably connected to a longitudinal ball screw (203) through a bearing. The longitudinal ball screw (203) is threadedly connected to a longitudinal slide plate (204). The output end of the longitudinal servo motor (202) is fixedly connected to the end of the longitudinal ball screw (203). A transverse guide rail (206) is provided on the longitudinal slide plate (204). A transverse slide plate (209) is slidably connected to the surface of the transverse guide rail (206). A column (205) is fixedly provided on the upper end of the transverse slide plate (209).

4. A novel CNC machining tool for motor housings according to claim 3, characterized in that: The upper sides of the horizontal sliding plate (209) are respectively provided with a horizontal servo motor (207) and a second connecting seat. The second connecting seat is rotatably connected to a horizontal ball screw through a bearing. The output end of the horizontal servo motor (207) and the end of the horizontal ball screw are fixedly connected. The lower end of the horizontal sliding plate (209) is threaded to the surface of the horizontal ball screw through a sleeve. The vertical guide rail (210) is set in front of the column (205). The side wall of the column (205) is fixedly installed with a vertical servo motor (210). 11) and the third connecting seat, the third connecting seat is rotatably connected to a vertical ball screw (212) through a bearing, the output shaft of the vertical servo motor (211) and the end of the vertical ball screw (212) are fixedly connected, the surface of the vertical ball screw (212) is threadedly connected to a vertical slide plate (213), the side wall of the vertical slide plate (213) is provided with a turret (214), the turret (214) has 12 tool positions, including one turning tool position in each direction, and the rest are power tool positions for milling, drilling and tapping.

5. A novel CNC machining tool for motor housings according to claim 1, characterized in that: The automatic exchange worktable component (3) includes a base (301), a longitudinal moving plate (302), a longitudinal motor (303), a longitudinal lead screw (304), two sets of independent transverse moving plates (305), two sets of independent transverse motors (306), and a motor housing positioning seat (307). The base (301) is fixedly installed on the side wall of the spindle bed component (1). The longitudinal motor (303) and a fourth connecting seat are fixedly installed on both sides of the upper surface of the base (301). The longitudinal lead screw (304) is rotatably connected to the side wall of the fourth connecting seat through bearings. The longitudinal screw (304) is fixedly connected to the output shaft of the longitudinal motor (303) at its end. A longitudinal moving plate (302) is threadedly connected to the surface of the longitudinal screw (304). A transverse motor (306) and a fifth connecting seat are fixedly installed on both sides of the upper surface of the longitudinal moving plate (302). A transverse screw is rotatably connected to the side wall of the fifth connecting seat through a bearing. The end of the transverse screw is fixedly connected to the end of the output shaft of the transverse motor (306). A transverse moving plate (305) is threadedly connected to the surface of the transverse screw. A detachable motor housing positioning seat (307) is provided on the upper surface of the transverse moving plate (305).

6. A novel CNC machining tool for motor housings according to claim 5, characterized in that: The base (301) and the spindle bed component (1) are arranged in parallel on the side wall.

7. A novel CNC machining tool for motor housings according to claim 1, characterized in that: The isolation and protection component (4) is a safety guard (41), which is fixedly installed between the front bed of the spindle bed component (1) and the automatic exchange worktable component (3).

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