Double-spindle double-tool rest numerical control lathe

Abstract

The application provides a double-spindle double-tool rest numerical control lathe, belonging to the technical field of machine tool manufacturing, comprising: a second spindle module is used for transferring a workpiece to the second spindle module; the second spindle module is cooperated with the second tool rest module along the numerical control lathe body X direction feeding and the numerical control lathe body Z direction feeding; when the workpiece rotates with the second spindle module, the other end of the workpiece is processed by the second tool rest module; then the whole workpiece is processed by one lathe, the workpiece processing procedure is simplified, and the processing efficiency is improved; the double-spindle double-tool rest cooperative processing does not need to rely on external equipment to transfer the workpiece, does not need manual intervention, and the beat is stable; since the second spindle module is coaxially arranged with the first spindle module, and the second spindle module only feeds along the numerical control lathe body Z axis direction, when the second spindle module transfers the workpiece, the centering problem before and after the workpiece transfer does not need to be considered, and the application is suitable for the automatic processing scene of small specification parts with large batch and high beat.

Description

Technical Field

[0001] This application belongs to the field of machine tool manufacturing technology, specifically relating to a dual-spindle, dual-tool-post CNC lathe. Background Technology

[0002] When batch-processing small-sized parts, lathes with two spindles and single tool posts are typically used to process each side of the part sequentially. However, due to the need for switching between different spindles, this sequential processing has a long cycle time and low production efficiency. As modern manufacturing demands increasingly higher efficiency, precision, and automation, single-spindle machine tools are no longer sufficient to meet the needs of mass production. Currently, although lathes with multiple spindles and tool posts exist, their structure and machining movements are relatively complex and unsuitable for batch processing of small-sized parts, requiring urgent improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, according to an embodiment of this application, a dual-spindle, dual-tool-post CNC lathe is proposed, comprising: CNC lathe body; The first spindle module is horizontally positioned at one end of the CNC lathe body. The first tool post module is positioned above the first spindle module. The first tool post module feeds along the X-axis direction of the CNC lathe body and along the Z-axis direction of the CNC lathe body. The second spindle module is located at the other end of the CNC lathe body. The second spindle module is coaxially arranged with the first spindle module. The second spindle module feeds along the Z-axis of the CNC lathe body to transfer the workpiece. The second tool post module is located above the second spindle module and feeds along the X-axis direction of the CNC lathe body. The Z-axis of the CNC lathe body is parallel to the axis of the first spindle module, and the X-axis of the CNC lathe body is perpendicular to the axis of the first spindle module.

[0005] In one feasible implementation, the first spindle module is set at a fixed position on the body of the CNC lathe, and the first tool post module performs one machining operation on the workpiece on the first spindle module. The second spindle module feeds along the Z-axis of the CNC lathe body, and the second tool post module feeds along the X-axis of the CNC lathe body. The second tool post module cooperates with the second spindle module to perform secondary processing on the workpiece on the second spindle module.

[0006] In one feasible implementation, the first spindle module includes: The first spindle assembly is horizontally positioned and fixed to the main body of the CNC lathe. The first receiving cavity extends through the first spindle assembly along the axial direction of the first spindle assembly and is arranged coaxially with the first spindle assembly. The clamping rod is located at the end of the first spindle assembly away from the second spindle module. The clamping rod is coaxially arranged with the first spindle assembly and is clamped to the feeding equipment. The second receiving cavity extends through the clamping rod along its axial direction and is coaxially arranged with the clamping rod. The second receiving cavity is connected to the first receiving cavity.

[0007] In one feasible implementation, the first spindle module further includes: A bushing assembly is disposed within a first receiving cavity, with one end of the bushing assembly extending into a second receiving cavity; The first chuck is disposed on the end face opposite to the first spindle assembly and the second spindle module. The first chuck rotates synchronously with the first spindle assembly and is coaxially arranged with the first receiving cavity. The first chuck is used to clamp the workpiece.

[0008] In one feasible implementation, the bushing assembly includes: The tube body is disposed in the first receiving cavity, and one end of the tube body extends into the second receiving cavity; Several guide sleeves are arranged coaxially with the pipe body inside the pipe body and are connected to the pipe body. A tapered hole is formed at one end of the guide sleeve near the clamp pull rod, and the tapered hole smoothly transitions with the inner hole of the guide sleeve.

[0009] In one feasible implementation, the second spindle module includes: The second spindle assembly is horizontally arranged and coaxially arranged with the first spindle module. The second spindle feeds along the Z-axis direction of the CNC lathe body. The third receiving cavity extends through the second spindle assembly along the axial direction of the second spindle assembly. The third receiving cavity is coaxially arranged with the second spindle assembly, and the end of the workpiece away from the first spindle module extends into the third receiving cavity. The second chuck is disposed on the end face of the second spindle assembly opposite to the first spindle module. The second chuck rotates synchronously with the second spindle assembly. The second chuck is coaxially arranged with the third receiving cavity. The second chuck is used to clamp the workpiece. The ejection mechanism is located at one end of the second spindle assembly away from the first spindle module. The ejection mechanism is coaxially arranged with the second spindle assembly. The fixed end of the ejection mechanism is connected to the second spindle assembly, and the telescopic end of the ejection mechanism is slidably connected to the second spindle assembly. The workpiece in the third receiving cavity is ejected by extending the telescopic end of the ejection mechanism.

[0010] In one feasible implementation, the second spindle module further includes: The push rod is slidably connected inside the third receiving cavity. The push rod is coaxially arranged with the ejection mechanism. One end of the push rod is connected to the telescopic end of the ejection mechanism so that the workpiece can be ejected from the third receiving cavity through the other end of the push rod.

[0011] In one feasible implementation, the dual-spindle dual-tool post CNC lathe further includes: a receiving device, which feeds along the Z-axis direction of the CNC lathe body, and is located below the second spindle module to catch the falling workpiece. The receiving device includes: The base is fed along the Z-axis of the CNC lathe body, and the base is arranged at an angle to the second spindle module; The receiving box is a hollow cavity with an opening at the top, and it is slidably connected to the inside of the base. The drive mechanism has a fixed end connected to the base and a telescopic end connected to the receiving box. The drive mechanism drives the opening and closing of the receiving box. Specifically, when the receiving box extends outside the base, it is in the open state; when the receiving box retracts into the base, it is in the closed state.

[0012] In one feasible implementation, the receiving device is electrically connected to the CNC system, and the CNC system controls the receiving device according to the processing cycle.

[0013] In one feasible implementation, the drive mechanism is coupled to the second spindle module, so that the drive mechanism and the second spindle module are fed together along the Z-axis direction of the CNC lathe body.

[0014] The dual-spindle, dual-tool-post CNC lathe disclosed in this application has the following advantages compared to existing technologies: The dual-spindle, dual-tool-post CNC lathe provided in this application includes a CNC lathe body, a first spindle module, a first tool post module, a second spindle module, and a second tool post module. The first spindle module only drives the workpiece to rotate. The first tool post module feeds along the X and Z directions of the CNC lathe body. While the workpiece rotates with the first spindle module, one end of the workpiece is machined using the first tool post module. The second spindle module is coaxially arranged with the first spindle module. The second spindle module feeds along the Z-axis of the CNC lathe body, changing the distance between the first and second spindle modules. The second spindle module transfers the workpiece from the first spindle module to the second spindle module. The second tool post module feeds along the X-axis of the CNC lathe body. The main spindle module feeds along the Z-axis of the CNC lathe body. As the workpiece rotates with the second spindle module, the other end of the workpiece is machined using the second tool post module. Thus, the entire workpiece is machined by a single lathe, simplifying the machining process and improving machining efficiency. The dual-spindle, dual-tool post collaborative machining eliminates the need for external equipment to transfer the workpiece and requires no manual intervention. The cycle time is stable, effectively improving the automation level of the lathe. Moreover, since the second spindle module is coaxially arranged with the first spindle module and feeds only along the Z-axis of the CNC lathe body, there is no need to consider the alignment problem before and after the workpiece transfer when the second spindle module transfers the workpiece. This is especially suitable for automated machining scenarios of large batches of small-sized parts with high cycle time. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structural diagram of the first angle of a dual-spindle, dual-tool-post CNC lathe according to an embodiment of this application; Figure 2 A schematic structural diagram of a second angle of a dual-spindle, dual-tool-post CNC lathe according to an embodiment of this application; Figure 3 A schematic structural diagram of the first spindle module of a dual-spindle dual-tool-post CNC lathe according to an embodiment of this application; Figure 4 A schematic structural diagram of the first angle of the second spindle module of a dual-spindle dual-tool-post CNC lathe according to an embodiment of this application; Figure 5 A schematic structural diagram of the second spindle module of a dual-spindle dual-tool-post CNC lathe according to an embodiment of this application, showing the second angle. Figure 6A schematic structural diagram of the receiving device of a dual-spindle dual-tool-post CNC lathe according to an embodiment of this application; in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows: 11. CNC lathe body; 12. First spindle module; 13. First tool post module; 14. Second spindle module; 15. Second tool post module; 16. Workpiece; 17. Receiving device; 121. First spindle assembly; 122. First receiving cavity; 123. Clamping rod; 124. Second receiving cavity; 125. Bushing assembly; 126. First chuck; 141. Second spindle assembly; 142. Third receiving cavity; 143. Second chuck; 144. Ejection mechanism; 145. Ejector rod; 1251. Tube body; 1252. Guide sleeve; 1253. Tapered hole; 171. Base; 172. Receiving box; 173. Drive mechanism. Detailed Implementation

[0016] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0019] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] like Figure 1 and Figure 2 As shown in the embodiment of this application, a dual-spindle dual-tool-post CNC lathe is proposed, comprising: a CNC lathe body 11, a first spindle module 12, a first tool post module 13, a second spindle module 14, a second tool post module 15, and a receiving device 17; the first spindle module 12 is horizontally disposed at one end of the CNC lathe body 11; the first tool post module 13 is disposed above the first spindle module 12, and the first tool post module 13 feeds along the X-axis direction of the CNC lathe body 11 and along the Z-axis direction of the CNC lathe body 11; the second spindle module 14 is disposed at the other end of the CNC lathe body 11, and the first tool post module 15 feeds along the X-axis direction of the CNC lathe body 11; the second spindle module 14 is disposed at the other end of the CNC lathe body 11, and the first tool post module 15 feeds along the X-axis direction of the CNC lathe body 11. The second spindle module 14 is coaxially arranged with the first spindle module 12. The second spindle module 14 feeds along the Z-axis of the CNC lathe body 11 to transfer the workpiece 16. The second tool post module 15 is located above the second spindle module 14 and feeds along the X-axis of the CNC lathe body 11. The Z-axis of the CNC lathe body 11 is parallel to the axis of the first spindle module 12, and the X-axis of the CNC lathe body 11 is perpendicular to the axis of the first spindle module 12. The X-axis and Z-axis of the CNC lathe body 11 are in the same plane.

[0021] The dual-spindle, dual-tool-post CNC lathe provided in this embodiment includes a CNC lathe body 11, a first spindle module 12, a first tool post module 13, a second spindle module 14, and a second tool post module 15. The first spindle module 12 only drives the workpiece 16 to rotate. The first tool post module 13 feeds along the X and Z directions of the CNC lathe body 11. While the workpiece 16 rotates with the first spindle module 12, one end of the workpiece 16 is machined using the first tool post module 13. The second spindle module 14 is coaxially arranged with the first spindle module 12. The second spindle module 14 feeds along the Z-axis of the CNC lathe body 11, changing the distance between the first spindle module 12 and the second spindle module 14. The second spindle module 14 transfers the workpiece 16 from the first spindle module 12 to the second spindle module 14. The second tool post module 15 feeds along the Z-axis of the CNC lathe body 11. The X-axis feed of the first spindle module 14 is coordinated with the Z-axis feed of the second spindle module 14 along the CNC lathe body 11. When the workpiece 16 rotates with the second spindle module 14, the other end of the workpiece 16 is processed by the second tool post module 15. Thus, the entire workpiece 16 is processed by one lathe, simplifying the processing steps of the workpiece 16 and improving processing efficiency. The dual spindle and dual tool post collaborative processing eliminates the need to rely on external equipment to transfer the workpiece 16 and requires no manual intervention. The cycle time is stable, effectively improving the automation level of the lathe. Moreover, since the second spindle module 14 is coaxially arranged with the first spindle module 12 and the second spindle module 14 only feeds along the Z-axis of the CNC lathe body 11, there is no need to consider the alignment problem of the workpiece 16 before and after the transfer when the second spindle module 14 transfers the workpiece 16. This is especially suitable for automated processing scenarios of small-sized parts with large batches and high cycle time.

[0022] It should be noted that the second spindle module 14 is coaxially arranged with the first spindle module 12, and the second spindle module 14 feeds only along the Z direction of the CNC lathe body 11. This structure can be improved using the original single-spindle machine tool platform. By replacing the functional modules, the lathe can be upgraded from a single spindle to a dual-spindle lathe, which has good modular expandability and economic efficiency in modification.

[0023] Furthermore, the lathe is electrically connected to the control system, which controls the rotation of the first spindle module 12 and the movement and rotation of the second spindle module 14, and plans the movement paths of the first tool post module 13 and the second tool post module 15.

[0024] Furthermore, the first tool holder module 13 adopts a modular design and can be equipped with multiple cutting tools to suit different process requirements; the second tool holder module 15 adopts a modular design and can be equipped with multiple cutting tools to suit different process requirements.

[0025] like Figure 1 and Figure 2As shown, in one feasible implementation, the first spindle module 12 is set at a fixed position on the CNC lathe body 11, and the first tool post module 13 performs a primary machining operation on the workpiece 16 on the first spindle module 12; the second spindle module 14 feeds along the Z-axis direction of the CNC lathe body 11, and the second tool post module 15 feeds along the X-axis direction of the CNC lathe body 11. The second tool post module 15 cooperates with the second spindle module 14 to perform a secondary machining operation on the workpiece 16 on the second spindle module 14.

[0026] In this technical solution, when the workpiece 16 rotates with the first spindle module 12, the first tool post module 13 processes one end of the workpiece 16. Then, the workpiece 16 is transferred to the second spindle module 14 and rotates and feeds with the second spindle module 14. At this time, the second tool post module 15 processes the other end of the workpiece 16. Through a clearly defined processing flow, the processing of the workpiece 16 can be seamlessly connected, avoiding the sequence delay in traditional sequential processing, improving the processing accuracy and cycle stability of the workpiece 16, and reducing the overall structural complexity of the lathe equipment.

[0027] like Figure 3 As shown, in one feasible embodiment, the first spindle module 12 includes: a first spindle assembly 121, a first receiving cavity 122, a clamping rod 123, and a second receiving cavity 124; the first spindle assembly 121 is horizontally arranged and fixed on the CNC lathe body 11; the first receiving cavity 122 extends through the first spindle assembly 121 along its axial direction and is coaxially arranged with the first spindle assembly 121; the clamping rod 123 is disposed at one end of the first spindle assembly 121 away from the second spindle module 14, and is coaxially arranged with the first spindle assembly 121, and is clamped to the loading device; the second receiving cavity 124 extends through the clamping rod 123 along its axial direction, and is coaxially arranged with the clamping rod 123, and is connected to the first receiving cavity 122.

[0028] In this technical solution, during the processing of workpiece 16, the first chuck 126 clamps the workpiece 16; by arranging the clamping rod 123 coaxially with the first spindle assembly 121, and by engaging the loading device with the clamping rod 123, the workpiece 16 is positioned during the loading process, ensuring the coaxiality of the workpiece 16 before and after loading; the second receiving cavity 124 is coaxially arranged with and connected to the first receiving cavity 122. When the workpiece 16 is loaded, the workpiece 16 is guided through the second receiving cavity 124 into the first receiving cavity 122, realizing the automatic feeding and positioning of the workpiece 16, ensuring the coaxiality of the workpiece 16 with the first spindle assembly 121 after loading, eliminating the centering adjustment step of the workpiece 16, reducing the loading time, and making it suitable for batch loading, thus improving the reliability and automation of loading.

[0029] like Figure 3 As shown, in one feasible embodiment, the first spindle module 12 further includes: a bushing assembly 125 and a first chuck 126; the bushing assembly 125 is disposed in the first receiving cavity 122, and one end of the bushing assembly 125 extends into the second receiving cavity 124; the first chuck 126 is disposed on the end face opposite to the first spindle assembly 121 and the second spindle module 14, the first chuck 126 rotates synchronously with the first spindle assembly 121, the first chuck 126 is coaxially arranged with the first receiving cavity 122, and the first chuck 126 is used to clamp the workpiece 16.

[0030] In this technical solution, since the inner wall of the clamping rod 123 protrudes from the inner wall of the first spindle assembly 121, the bushing assembly 125 is added to guide the workpiece 16 during loading. The bushing assembly 125 guides the workpiece 16 smoothly to the processing position on the first spindle assembly 121. The bushing assembly 125 accurately centers and supports the workpiece 16 inside the first spindle assembly 121, thereby ensuring the coaxiality of the workpiece 16 with the first spindle assembly 121 during one processing cycle, ensuring the processing quality of the workpiece 16, preventing the workpiece 16 from colliding with the tool of the first tool holder module 13, ensuring processing safety, and extending the tool life.

[0031] Furthermore, the bushing is detachably connected to the tube body 1251, and the inner hole of the bushing is configured with different sizes according to the specifications of the workpiece 16 being processed, allowing for quick disassembly and replacement to ensure smooth feeding.

[0032] As a preferred option, the bushing is made of wear-resistant copper alloy material to extend the service life of the bushing. The inner surface is polished to reduce the frictional resistance between the bushing and the workpiece 16 and ensure smooth feeding of the workpiece 16.

[0033] like Figure 3 As shown, in one feasible embodiment, the bushing assembly 125 includes: a tube body 1251, a plurality of guide sleeves 1252, and a tapered hole 1253; the tube body 1251 is disposed in a first receiving cavity 122, and one end of the tube body 1251 extends into a second receiving cavity 124; the guide sleeves 1252 are coaxially arranged with the tube body 1251 inside the tube body 1251 and are connected to the tube body 1251; the tapered hole 1253 is opened at one end of the guide sleeve 1252 near the clamping rod 123, and the tapered hole 1253 smoothly transitions with the inner hole of the guide sleeve 1252.

[0034] In this technical solution, the tube body 1251 is set outside the guide sleeve 1252 to ensure the coaxiality of multiple guide sleeves 1252. The tapered hole 1253 is set at the inlet end of the guide sleeve 1252. The workpiece 16 is guided smoothly into the first spindle assembly 121 through the tapered hole 1253, avoiding collision between the workpiece 16 and the clamping rod 123, preventing the workpiece 16 from getting stuck during automatic feeding, improving the smoothness of workpiece 16 feeding, and making the lathe particularly suitable for processing tubes and bars.

[0035] like Figure 4 and Figure 5 As shown, in one feasible embodiment, the second spindle module 14 includes: a second spindle assembly 141, a third receiving cavity 142, a second chuck 143, and an ejection mechanism 144; the second spindle assembly 141 is horizontally arranged and coaxially arranged with the first spindle module 12, and the second spindle feeds along the Z-axis direction of the CNC lathe body 11; the third receiving cavity 142 extends through the second spindle assembly 141 along its axial direction and is coaxially arranged with the second spindle assembly 141, and one end of the workpiece 16 facing away from the first spindle module 12 extends into the third receiving cavity 142; the second chuck 143 is disposed on the second spindle. On the end face of component 141 opposite to the first spindle module 12, the second chuck 143 rotates synchronously with the second spindle component 141. The second chuck 143 is coaxially arranged with the third receiving cavity 142 and is used to clamp the workpiece 16. The ejection mechanism 144 is located at the end of the second spindle component 141 away from the first spindle module 12. The ejection mechanism 144 is coaxially arranged with the second spindle component 141. The fixed end of the ejection mechanism 144 is connected to the second spindle component 141, and the telescopic end of the ejection mechanism 144 is slidably connected to the second spindle component 141. The workpiece 16 in the third receiving cavity 142 is ejected by extending the telescopic end of the ejection mechanism 144.

[0036] In this technical solution, during the secondary processing of workpiece 16, the second chuck 143 clamps workpiece 16 and fixes it inside the second spindle assembly 141 so that workpiece 16 rotates synchronously with the second spindle assembly 141. After the secondary processing is completed, the second chuck 143 is released, and the ejector mechanism 144 provides an axial push stroke to automatically push the workpiece 16 after the secondary processing is completed out of the second spindle assembly 141. This realizes the automatic unloading function of the lathe and improves the automation level and production efficiency of lathe processing.

[0037] As a preferred embodiment, workpiece 16 is a long tube or long bar. In some examples, workpiece 16 is fed into the first spindle module 12 via a loading device. After the first tool post module 13 completes one processing operation, the second spindle assembly 141 clamps workpiece 16 and moves it, extracting a certain length of the long material from the first spindle module 12. The first tool post module 13 cuts the long material, so that the workpiece 16 held by the second spindle assembly 141 is a short material. The second tool post module 15 performs secondary processing on the short material held by the second spindle assembly 141, thereby quickly cutting the long material into a short material without the need for transfer, reducing the production cycle time, and making it suitable for automated processing scenarios of small-sized parts with large batches and high cycle times.

[0038] As a preferred option, the ejection mechanism 144 is a telescopic hydraulic cylinder.

[0039] like Figure 5 As shown, in one feasible embodiment, the second spindle module 14 further includes a push rod 145, which is slidably connected inside the third receiving cavity 142. The push rod 145 is coaxially arranged with the ejection mechanism 144, and one end of the push rod 145 is connected to the telescopic end of the ejection mechanism 144 so as to eject the workpiece 16 from the third receiving cavity 142 through the other end of the push rod 145.

[0040] In this technical solution, one end of the ejector rod 145 cooperates with the ejector mechanism 144, and the other end of the ejector rod 145 cooperates with the workpiece 16. The ejector rod 145 serves to extend the length and reduce the length and volume of the ejector mechanism 144. After the secondary processing is completed, the ejector mechanism 144 pushes the ejector rod 145 to move a certain stroke along the axis of the second spindle assembly 141, ensuring that the workpiece 16 is accurately and completely ejected from the second spindle assembly 141. This improves the automation level of workpiece 16 unloading, avoids workpiece 16 jamming during unloading, improves the reliability and consistency of lathe unloading, avoids the risk of workpiece 16 not being able to be unloaded smoothly after processing, and realizes the integrated action of "clamping-processing-releasing-ejection", significantly improving unloading efficiency and automation level.

[0041] like Figure 6As shown, in one feasible embodiment, the dual-spindle dual-tool-post CNC lathe further includes: a receiving device 17 fed along the Z-axis direction of the CNC lathe body 11, the receiving device 17 being disposed below the second spindle module 14, and the receiving device 17 catching the falling workpiece 16; the receiving device 17 includes: a base 171, a receiving box 172, and a drive mechanism 173; the base 171 is fed along the Z-axis direction of the CNC lathe body 11, and the base 171 is arranged at an angle to the second spindle module 14; the receiving device 17 catches the falling workpiece 16; the receiving device 17 includes: a base 171, a receiving box 172, and a drive mechanism 173; the base 171 is fed along the Z-axis direction of the CNC lathe body 11, and the base 171 is arranged at an angle to the second spindle module 14; the receiving device 17 is positioned below the second spindle module 14; the receiving device 17 is positioned below the second spindle module 14, and ... The receiving box 172 is a hollow cavity with an opening at the top, and the receiving box 172 is slidably connected to the inside of the base 171; the fixed end of the drive mechanism 173 is connected to the base 171, and the telescopic end of the drive mechanism 173 is connected to the receiving box 172. The drive mechanism 173 drives the opening and closing of the receiving box 172; when the receiving box 172 extends out of the base 171, the receiving box 172 is in the open state; when the receiving box 172 retracts into the base 171, the receiving box 172 is in the closed state.

[0042] In this technical solution, the opening and closing action of the receiving device 17 is related to the Z-axis movement stroke of the second spindle module 14. The switching of the receiving device 17 is not an independent time-point command, but integrates the receiving link into the entire processing motion control, so that the flow of the workpiece 16 and the control signal can be closely combined. The action switching of the receiving device 17 is smooth with almost no waiting time, realizing fully automatic continuous feeding, unloading, receiving and unloading operations, compressing the processing cycle to the shortest possible time, improving the overall processing production efficiency, and realizing fully automated operation of workpiece 16 with one-time feeding, double-end processing, automatic unloading and unloading. It is suitable for automated processing scenarios of small-specification parts with large batches and high cycle times. The opening and closing action of the receiving box 172 is controlled by the drive mechanism 173 and linked with the processing cycle. When the workpiece 16 falls, the drive mechanism 173 extends to drive the receiving box 172 to slide out from the third main body, so that the receiving box 172 opens and receives the workpiece smoothly. When the workpiece 16 is being processed, the drive mechanism 173 retracts to control the receiving box 172 to slide into the base 171, and the receiving box 172 closes to prevent iron filings from entering and keep the workpiece 16 inside the receiving box 172 clean. This achieves clean collection of the workpiece 16 and isolation of iron filings, further improving the level of automation and processing quality, and realizing a fully automated, efficient and clean processing cycle.

[0043] Furthermore, the angle between the plane containing the X-axis and Z-axis of the CNC lathe body 11 and the ground is 45 degrees to ensure smooth chip removal during machining.

[0044] In one feasible implementation, the receiving device 17 is electrically connected to the CNC system, and the CNC system controls the receiving device 17 according to the machining cycle; the drive mechanism 173 is coupled to the second spindle module 14, so that the drive mechanism 173 and the second spindle module 14 are fed together along the Z-axis direction of the CNC lathe body 11.

[0045] In this technical solution, the opening and closing action of the receiving device 17 is related to the Z-axis movement stroke of the second spindle module 14. The switching of the receiving device 17 is not an independent time-point command, but integrates the receiving link into the entire processing motion control, so that the flow of the workpiece 16 and the control signal can be closely combined. The action switching of the receiving device 17 is smooth with almost no waiting time, realizing fully automatic continuous feeding, unloading, receiving and unloading operations, compressing the processing cycle to the shortest possible time, improving the overall processing production efficiency, and realizing fully automated operation of workpiece 16 with one-time feeding, double-end processing, automatic unloading and unloading. It is suitable for automated processing scenarios of small-specification parts with large batches and high cycle times.

[0046] Furthermore, before the second spindle module 14 completes processing and performs the action of axially pushing out the workpiece 16, the control system issues a command to control the drive mechanism 173 to extend and push out the receiving box 172 to the open state; after the workpiece 16 is pushed out by the second spindle module 14, it falls freely into the receiving box 172; the control system controls the receiving box 172 to reset, preparing for the next cycle.

[0047] As a preferred option, the drive mechanism 173 is a telescopic hydraulic cylinder.

[0048] Example: The process for double-end machining of typical shaft parts using a lathe is as follows: Feeding stage: The bar stock is guided by the bushing and fed into the first spindle module by the automatic feeding mechanism, and the first chuck clamps the workpiece; One-time machining: The first spindle module drives the workpiece to rotate, and the first tool post module completes the machining of the outer circle, end face and inner hole of the left end of the workpiece; Transfer and clamping: The first chuck is released, and the second spindle module moves towards the first spindle module, allowing part of the workpiece to enter the second spindle module. Then, the second chuck clamps the right end of the workpiece, pulling the workpiece out of the first spindle module and cutting it off from the first tool holder module. Secondary machining: The second spindle module drives the workpiece to rotate and retract, and the second tool post module completes the machining of the right end of the workpiece; Material receiving action: The drive mechanism drives the receiving box to extend and open the receiving box; Unloading stage: The second chuck is released, and the ejection mechanism pushes the workpiece out of the second spindle module; Material receiving action: The workpiece falls into the receiving box, the drive mechanism retracts, closes the receiving box, and enters the next cycle.

[0049] The entire processing requires no manual intervention, has a stable cycle time, and increases production efficiency by approximately 40%.

[0050] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A dual-spindle, dual-tool-post CNC lathe, characterized in that, The dual-spindle, dual-tool-post CNC lathe includes: CNC lathe body; The first spindle module is horizontally disposed at one end of the CNC lathe body; The first tool post module is positioned above the first spindle module. The first tool post module feeds along the X-axis direction of the CNC lathe body and along the Z-axis direction of the CNC lathe body. The second spindle module is located at the other end of the CNC lathe body. The second spindle module is coaxially arranged with the first spindle module. The second spindle module feeds along the Z-axis direction of the CNC lathe body to transfer the workpiece. The second tool post module is positioned above the second spindle module and feeds along the X-axis direction of the CNC lathe body. The Z-axis of the CNC lathe body is parallel to the axis of the first spindle module, and the X-axis of the CNC lathe body is perpendicular to the axis of the first spindle module.

2. The dual-spindle, dual-tool-post CNC lathe according to claim 1, characterized in that, The first spindle module is set at a fixed position on the main body of the CNC lathe, and the first tool post module performs one machining operation on the workpiece on the first spindle module; The second spindle module feeds along the Z-axis of the CNC lathe body, and the second tool post module feeds along the X-axis of the CNC lathe body. The second tool post module cooperates with the second spindle module to perform secondary processing on the workpiece on the second spindle module.

3. A dual-spindle, dual-tool-post CNC lathe according to claim 1, characterized in that, The first spindle module includes: A first spindle assembly is horizontally arranged and fixed to the body of the CNC lathe. A first receiving cavity extends through the first spindle assembly along the axial direction of the first spindle assembly, and the first receiving cavity is arranged coaxially with the first spindle assembly; A clamping rod is provided at one end of the first spindle assembly away from the second spindle module. The clamping rod is coaxially arranged with the first spindle assembly and is engaged with the feeding device. The second receiving cavity extends through the clamping rod along its axial direction, is coaxially arranged with the clamping rod, and communicates with the first receiving cavity.

4. A dual-spindle, dual-tool-post CNC lathe according to claim 3, characterized in that, The first spindle module also includes: A bushing assembly, wherein the bushing assembly is disposed within the first receiving cavity, and one end of the bushing assembly extends into the second receiving cavity; The first chuck is disposed on the end face opposite to the first spindle assembly and the second spindle module. The first chuck rotates synchronously with the first spindle assembly. The first chuck is coaxially arranged with the first receiving cavity. The first chuck is used to clamp the workpiece.

5. A dual-spindle, dual-tool-post CNC lathe according to claim 4, characterized in that, The bushing assembly includes: A tube body, wherein the tube body is disposed in the first receiving cavity, and one end of the tube body extends into the second receiving cavity; A plurality of guide sleeves are arranged coaxially with the tube body inside the tube body and are connected to the tube body; A tapered hole is formed at one end of the guide sleeve near the clamp pull rod, and the tapered hole smoothly transitions to the inner hole of the guide sleeve.

6. A dual-spindle, dual-tool-post CNC lathe according to claim 1, characterized in that, The second spindle module includes: The second spindle assembly is horizontally arranged and coaxially arranged with the first spindle module. The second spindle feeds along the Z-axis direction of the CNC lathe body. The third receiving cavity extends through the second spindle assembly along the axial direction of the second spindle assembly. The third receiving cavity is coaxially arranged with the second spindle assembly, and the end of the workpiece facing away from the first spindle module extends into the third receiving cavity. The second chuck is disposed on the end face of the second spindle assembly opposite to the first spindle module. The second chuck rotates synchronously with the second spindle assembly. The second chuck is coaxially arranged with the third receiving cavity. The second chuck is used to clamp the workpiece. An ejection mechanism is provided at one end of the second spindle assembly away from the first spindle module. The ejection mechanism is coaxially arranged with the second spindle assembly. The fixed end of the ejection mechanism is connected to the second spindle assembly, and the telescopic end of the ejection mechanism is slidably connected to the second spindle assembly. The workpiece in the third receiving cavity is ejected by extending the telescopic end of the ejection mechanism.

7. A dual-spindle, dual-tool-post CNC lathe according to claim 6, characterized in that, The second spindle module also includes: A push rod is slidably connected inside the third receiving cavity. The push rod is coaxially arranged with the ejection mechanism. One end of the push rod is connected to the telescopic end of the ejection mechanism so that the workpiece can be ejected from the third receiving cavity through the other end of the push rod.

8. A dual-spindle, dual-tool-post CNC lathe according to claim 1, characterized in that, The dual-spindle, dual-tool-post CNC lathe also includes: A receiving device is provided, which feeds along the Z-axis of the CNC lathe body and is located below the second spindle module. The receiving device catches the falling workpiece. The receiving device includes: The base is fed along the Z-axis direction of the CNC lathe body, and the base is arranged at an angle to the second spindle module; The receiving box is a hollow cavity with an opening at the top, and the receiving box is slidably connected to the inside of the base; A drive mechanism, wherein the fixed end of the drive mechanism is connected to the base, and the telescopic end of the drive mechanism is connected to the receiving box, and the drive mechanism drives the opening and closing action of the receiving box; Specifically, when the receiving box extends outside the base, the receiving box is in an open state; when the receiving box retracts into the base, the receiving box is in a closed state.

9. A dual-spindle, dual-tool-post CNC lathe according to claim 8, characterized in that, The receiving device is electrically connected to the CNC system, and the CNC system controls the receiving device according to the processing cycle.

10. A dual-spindle, dual-tool-post CNC lathe according to claim 9, characterized in that, The drive mechanism is coupled to the second spindle module, so that the drive mechanism and the second spindle module are fed together along the Z-axis direction of the CNC lathe body.

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