A rapid table changing device for CNC machine tools

Abstract

This utility model relates to the technical field of CNC machine tool supporting tooling equipment, specifically to a rapid table changing device for CNC machine tools, comprising: a worktable body and a changing mechanism; the upper end plate of the worktable body is used to lay and clamp various workpieces to be machined; the changing mechanism is arranged across the machining chamber and the material inlet / outlet chamber, and is equipped with a receiving platform, a fastener, a fastener rod, two sets of drive components, and a guide frame; the receiving platform is used to temporarily support the worktable body, providing a stable bearing reference for the worktable body; the fastener is fixedly assembled on the side of the worktable body. By using two sets of drive components in conjunction with an XZ dual-axis lifting cross slide, the worktable body can be pushed and pulled across the chamber for transport, allowing machining and workpiece disassembly / assembly operations to be carried out simultaneously and in parallel, without requiring the entire machine to be stopped to wait for material changes. This solves the technical problems of existing CNC machine tools requiring a complete machine stop to change workpieces after machining, resulting in poor machining continuity.

Description

Technical Field

[0001] This utility model relates to the technical field of tooling equipment for CNC machine tools, specifically to a rapid table changing device for CNC machine tools. Background Technology

[0002] When operating a CNC machine tool, after the workpiece is cut, the equipment needs to be stopped and the operator needs to enter the machining chamber to disassemble the finished product and replace the workpiece to be processed. The entire material change process takes a long time, the equipment idle time accounts for a high proportion, and the continuous processing efficiency of the whole machine is low. At the same time, there are safety hazards of manually entering and exiting the machining chamber to change workpieces, such as bumping the tool and accidentally touching the moving parts. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a rapid table changing device for CNC machine tools. By using two sets of drive components in conjunction with an XZ dual-axis lifting cross slide, the main body of the worktable can be pushed and pulled across the cavity for transport. Machining and workpiece assembly / disassembly operations can be carried out simultaneously and in parallel, without the need to stop the entire machine to wait for material changes. This solves the technical problems of existing CNC machine tools requiring a complete machine stop to change workpieces after machining and poor machining continuity.

[0004] To address the problems of existing technologies, this utility model provides a rapid table changing device for CNC machine tools, including a machining chamber with a material inlet / outlet chamber installed on one side. It also includes a worktable body and a changing mechanism. The upper surface of the worktable body is used to flatly mount various workpieces to be machined. The changing mechanism is arranged across the machining chamber and the material inlet / outlet chamber, and includes a receiving platform, a buckle, a buckle rod, two sets of drive components, and a guide frame. The receiving platform temporarily supports the worktable body, providing a stable bearing reference. The buckle is fixedly mounted on the side of the worktable body, and the buckle rod engages with the buckle. The two sets of drive components are symmetrically arranged inside the material inlet / outlet chamber, driving the buckle rod to reciprocate horizontally, providing pushing and pulling power for the worktable body's transfer. The guide frame is fixedly connected to the junction of the machining chamber and the material inlet / outlet chamber, providing bottom support for the moving worktable body.

[0005] Preferably, an XZ dual-axis lifting cross slide is provided below the receiving platform. The XZ dual-axis lifting cross slide is installed on the processing chamber. The XZ dual-axis lifting cross slide is used to independently or synchronously drive the receiving platform to complete the left and right horizontal translation and vertical lifting actions.

[0006] Preferably, the guide frame is located below the cross-cavity transfer connection section of the main body of the workbench, thus sharing the overall weight of the main body of the workbench and the workpiece.

[0007] Preferably, a roller is rotatably mounted on the inner side of the guide frame, and the top surface of the roller is in contact with the bottom surface of the worktable body; the roller is used to convert the sliding friction between the worktable body and the guide frame into rolling friction, thereby reducing the pushing and pulling resistance of the worktable body.

[0008] Preferably, the drive assembly includes a lead screw and a motor; the lead screw is rotatably connected to the material inlet / outlet chamber, and the lower end of the lead screw is threadedly connected to the latch rod; the motor is fixedly installed in the material inlet / outlet chamber, and the output end of the motor is fixedly connected to one end of the lead screw.

[0009] Preferably, a guide seat is fixedly connected to the end of the buckle, and a guide rail is fixedly connected to the side of the material inlet / outlet chamber facing the guide seat; the guide seat and the guide rail slide together to form a sliding guide pair, which is used to prevent the buckle from rotating circumferentially following the lead screw.

[0010] Preferably, a guide plate is fixedly connected to the side of the material inlet / outlet chamber facing the drive assembly, and a roller is rotatably provided on the inner side of the guide plate.

[0011] Preferably, the inner side of the workbench body slides with the rollers of the guide plate to form a sliding guide pair, which is used to assist the workbench body to move only in a straight line.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. By using a rotating mechanism with two sets of independent drive components, the main body of the worktable carrying the finished product can be pushed to the material inlet and outlet chamber, while the main body of the worktable with pre-loaded workpieces is sent into the processing chamber. Workpiece disassembly and cutting processing are carried out simultaneously, without the need for the whole machine to stop and wait for material change, which greatly shortens the equipment standby time and improves the continuous processing efficiency of CNC machine tools.

[0014] 2. Rollers are installed on the inner side of the guide frame and guide plate to limit and guide the main body of the worktable from the bottom and the side, respectively, reducing the frictional resistance of the transfer and constraining the linear movement of the main body of the worktable throughout the process, preventing transfer deviation, jamming and collision. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a rapid table changing device for CNC machine tools according to this utility model. Figure 1 .

[0016] Figure 2 This is a three-dimensional schematic diagram of a rapid table changing device for CNC machine tools according to this utility model. Figure 2 .

[0017] Figure 3 This is a three-dimensional schematic diagram of the worktable body and receiving platform of a rapid worktable changing device for CNC machine tools according to this utility model.

[0018] Figure 4 This is a three-dimensional schematic diagram of a latch and drive assembly for a rapid table changing device of a CNC machine tool, according to this utility model.

[0019] Figure 5 This is a three-dimensional schematic diagram of a receiving platform and guide frame of a rapid table changing device for CNC machine tools according to this utility model.

[0020] The diagram is labeled as follows: 1. Processing room; 11. Material inlet / outlet room; 2. Main workbench; 21. Receiving platform; 22. Buckle frame; 23. Buckle rod; 24. Drive assembly; 25. Guide frame; 26. Guide plate. Detailed Implementation

[0021] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] See Figures 1 to 5 As shown, a rapid table changing device for CNC machine tools includes a machining chamber 1, a material inlet / outlet chamber 11 installed on one side of the machining chamber 1, and a worktable body 2 and a changing mechanism. The upper end plate of the worktable body 2 is used to lay and clamp various workpieces to be cut. The changing mechanism is arranged across the machining chamber 1 and the material inlet / outlet chamber 11, and is equipped with a receiving platform 21, a fastener 22, a fastener 23, two sets of drive components 24, and a guide frame 25. The receiving platform 21 is used to temporarily support and place the worktable. The main body 2 provides a stable load-bearing reference for the workbench main body 2; the buckle 22 is fixedly assembled on the side of the workbench main body 2, and the buckle rod 23 engages with the buckle 22; two sets of drive components 24 are symmetrically arranged inside the material inlet / outlet chamber 11, and the drive components 24 are used to drive the buckle rod 23 to move back and forth along a horizontal straight line, providing push and pull power for the transfer of the workbench main body 2; the guide frame 25 is fixedly connected to the connection position between the processing chamber 1 and the material inlet / outlet chamber 11, and the guide frame 25 is used to form a bottom load-bearing support for the moving workbench main body 2.

[0023] Below the receiving platform 21 is an XZ dual-axis lifting cross slide, which is installed on the processing chamber 1. The XZ dual-axis lifting cross slide is used to independently or synchronously drive the receiving platform 21 to complete the horizontal translation and vertical lifting actions. The guide frame 25 is located below the cross-cavity transfer connection section of the worktable body 2, distributing the overall weight of the worktable body 2 and the workpiece. The inner side of the guide frame 25 is rotatably equipped with rollers, and the top surface of the rollers is in contact with the bottom surface of the worktable body 2. The rollers are used to convert the sliding friction between the worktable body 2 and the guide frame 25 into rolling friction, reducing the pushing and pulling resistance of the worktable body 2.

[0024] The drive assembly 24 includes a lead screw and a motor. The lead screw is horizontally arranged and rotatably connected to the material inlet / outlet chamber 11. The lower end of the lead screw is threadedly connected to the latch 23. The motor is fixedly installed inside the material inlet / outlet chamber 11, and the output end of the motor is fixedly connected to one end of the lead screw. A guide seat is fixedly connected to the end of the latch 23, and a guide rail is fixedly connected to the side of the material inlet / outlet chamber 11 facing the guide seat. The guide seat and the guide rail slide together to form a sliding guide pair, which is used to prevent the latch 23 from rotating circumferentially with the lead screw. A guide plate 26 is fixedly connected to the side of the material inlet / outlet chamber 11 facing the drive assembly 24. A roller is rotatably arranged on the inner side of the guide plate 26. The inner side of the workbench body 2 slides together with the roller of the guide plate 26 to form a sliding guide pair, which is used to assist the workbench body 2 to move only in a straight line.

[0025] After the CNC machine tool completes the workpiece processing, if it is necessary to move the main body 2 of the worktable carrying the finished product out of the processing chamber 1, the XZ dual-axis lifting cross slide is activated. The XZ dual-axis lifting cross slide drives the receiving platform 21 to complete the horizontal adjustment, so that the receiving platform 21 is precisely aligned with one of the drive components 24, ensuring that the alignment reference of the buckle 22 and the buckle 23 is consistent, and avoiding misalignment and jamming during subsequent engagement. At this time, the buckle 22 of the worktable main body 2 and the buckle 23 of the drive component 24 are arranged vertically in correspondence. Then, the XZ dual-axis lifting cross slide drives the receiving platform 21 to move vertically upward, and the receiving platform 21 lifts the main body 2 of the worktable in sync, so that the buckle 22 moves to the position directly above the buckle 23.

[0026] When the motor of the drive assembly 24 is started, the output end of the motor drives the lead screw to rotate. The guide seat and the guide rail slide together to form a sliding guide pair, which constrains the buckle 23 to only move in a straight line, preventing the buckle 23 from rotating in the same direction and ensuring that the horizontal feeding action of the buckle 23 is smooth. The rotation of the lead screw drives the buckle 23 to feed horizontally, so that the buckle 23 moves to the area directly below the buckle frame 22.

[0027] The XZ dual-axis lifting cross slide is operated again to drive the receiving platform 21 to move vertically downward. The receiving platform 21 simultaneously lifts the worktable body 2 and lowers synchronously, so that the buckle 22 and buckle rod 23 complete the engagement and connection, establish a rigid connection between the drive component 24 and the worktable body 2, and stably transmit the pushing and pulling displacement power. The motor of the drive component 24 is started in the reverse direction. The output end of the motor drives the lead screw to rotate in the reverse direction. The buckle rod 23 is pulled back horizontally at the same time. The buckle 22 pulls the worktable body 2 to detach from the bearing plane of the receiving platform 21. During the displacement, the guide frame 25 forms vertical support for the bottom of the worktable body 2, and the guide plate 26 forms lateral limiting guidance for the worktable body 2. The two form sliding guide pairs with the worktable body 2, constraining the horizontal offset of the worktable body 2 and eliminating the shaking and swaying problems caused by the pushing and pulling process. The worktable body 2 slides smoothly from the processing chamber 1 to the material inlet and outlet chamber 11. The operator can then remove the workpiece that has been processed on the surface of the worktable body 2 in the area of ​​the material inlet and outlet chamber 11.

[0028] After the main body 2 of the workbench carrying the finished product is completely detached from the receiving platform 21, the XZ dual-axis lifting cross slide is activated again, driving the receiving platform 21 to complete the left and right and height adjustments, so that the main body 2 of the workbench supported by the receiving platform 21 is aligned with the latch 23 of another set of drive components 24, switching work positions and realizing the alternation of operation between the old and new workbench bodies 2; the latch 23 of this set of drive components 24 has been engaged with the matching latch 22 of the workbench body 2 with the pre-loaded workpiece to be processed, and the drive components 24 push the main body 2 of the workbench to slide into the processing chamber 1 by relying on the rigid connection of the latch 23 and the latch 22. The guide frame 25 and the guide plate 26 respectively form a sliding guide pair with the main body 2 of the workbench, restricting the displacement trajectory of the main body 2 of the workbench throughout the process, ensuring that the main body 2 of the workbench moves smoothly to the bearing area above the receiving platform 21.

[0029] The XZ dual-axis lifting cross slide drives the receiving platform 21 to rise vertically. The receiving platform 21 simultaneously lifts the worktable body 2 with the pre-loaded workpiece and moves it upward, causing the buckle 22 and buckle rod 23 to disengage from each other, releasing the connection constraint between the drive assembly 24 and the worktable body 2. The processing chamber 1 can then perform cutting processing on the workpiece to be processed carried by the worktable body 2.

[0030] During the synchronous period of the processing procedure in the processing room 1, the operator can disassemble and remove the finished workpiece that was moved out of the worktable body 2 from the previous workstation in the material inlet / outlet room 11. The two workstations work alternately, thereby realizing the rapid rotation of the CNC machine tool worktable body 2, shortening the equipment standby material change time, and improving the continuous processing efficiency of the whole machine.

[0031] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A rapid table changing device for a CNC machine tool, comprising a machining chamber (1), wherein a material inlet / outlet chamber (11) is installed on one side of the machining chamber (1), characterized in that, Also includes: The main body of the workbench (2) and the rotation mechanism, The upper plate of the main body of the workbench (2) is used to lay and clamp various workpieces to be cut. The switching mechanism is arranged across the processing room (1) and the material inlet / outlet room (11). The switching mechanism is equipped with a receiving platform (21), a buckle (22), a buckle rod (23), two sets of drive components (24) and a guide frame (25). The receiving platform (21) is used to temporarily support and place the main body of the workbench (2), providing a stable bearing benchmark for the main body of the workbench (2). The buckle frame (22) is fixedly assembled on the side of the workbench body (2), and the buckle rod (23) engages with the buckle frame (22). Two sets of drive components (24) are symmetrically arranged inside the material inlet / outlet chamber (11). The drive components (24) are used to drive the lever (23) to reciprocate along a horizontal straight line, providing push-pull power for the transfer of the workbench body (2). The guide frame (25) is fixedly connected to the connection position between the processing chamber (1) and the material inlet / outlet chamber (11), and the guide frame (25) is used to form a bottom bearing support for the main body of the mobile workbench (2).

2. The rapid table changing device for CNC machine tools according to claim 1, characterized in that, An XZ dual-axis lifting cross slide is provided below the receiving platform (21). The XZ dual-axis lifting cross slide is installed on the processing chamber (1). The XZ dual-axis lifting cross slide is used to independently or synchronously drive the receiving platform (21) to complete the horizontal translation and vertical lifting actions.

3. The rapid table changing device for CNC machine tools according to claim 1, characterized in that, The guide frame (25) is located below the cross-cavity transfer connection section of the main body of the workbench (2), and shares the overall weight of the main body of the workbench (2) and the workpiece.

4. A rapid table changing device for CNC machine tools according to claim 3, characterized in that, The inner side of the guide frame (25) is rotatably equipped with rollers, and the top surface of the rollers is in contact with the bottom surface of the workbench body (2); The roller is used to convert the sliding friction between the worktable body (2) and the guide frame (25) into rolling friction, thereby reducing the resistance of the worktable body (2) to push and pull.

5. A rapid table changing device for CNC machine tools according to claim 1, characterized in that, The drive assembly (24) includes a lead screw and a motor; The lead screw is rotatably connected to the material inlet / outlet chamber (11), and the lower end of the lead screw is threadedly connected to the buckle (23); The motor is fixedly installed in the material inlet / outlet chamber (11), and the output end of the motor is fixedly connected to one end of the lead screw.

6. A rapid table changing device for CNC machine tools according to claim 5, characterized in that, The end of the buckle (23) is fixedly connected to a guide seat, and the material inlet / outlet chamber (11) is fixedly connected to a guide rail on the side facing the guide seat; The guide seat and the guide rail slide together to form a sliding guide pair, which is used to prevent the buckle (23) from rotating circumferentially with the lead screw.

7. A rapid table changing device for CNC machine tools according to claim 1, characterized in that, The material inlet / outlet chamber (11) is fixedly connected to a guide plate (26) on the side facing the drive assembly (24), and a roller is rotatably provided on the inner side of the guide plate (26).

8. A rapid table changing device for CNC machine tools according to claim 7, characterized in that, The inner side of the workbench body (2) and the roller of the guide plate (26) slide together to form a sliding guide pair, which is used to assist the workbench body (2) to move only in a straight line.

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