Numerical control five-axis tool grinding machine

Abstract

The utility model provides a numerical control five-axis tool grinding machine, and belongs to the technical field of machine tools. The problem of how to improve the machining precision of a workpiece is solved. The numerical control five-axis tool grinding machine comprises a machine frame, a clamping device used for clamping a workpiece is arranged on the machine frame, a rotary table is rotationally connected to the machine frame, a long-strip-shaped and horizontally-arranged supporting base is fixed to the rotary table, a movable base is slidably connected to the supporting base in the length direction, and the movable base is fixedly connected to the machine frame. A driving part which is connected with the moving seat and can drive the moving seat to reciprocate is fixed on the supporting seat, and the clamping device is fixedly connected to the moving seat. The numerical control five-axis tool grinding machine can improve the machining precision of workpieces.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool technology and relates to a CNC five-axis tool grinder. Background Technology

[0002] A grinding machine is a machine tool that uses abrasives to grind the surface of a workpiece. It is a very common piece of equipment in the current technology. Specifically, it generally includes a frame, on which a robotic arm, a feed pan, a tool magazine, and a grinding head mechanism formed by a combination of a spindle system, a drive motor, and a grinding wheel are mounted. In addition, a worktable for clamping workpieces is also installed on the frame.

[0003] During production, the robotic arm first removes the workpiece from the tray and assembles it onto the worktable. The grinding head mechanism uses a grinding wheel to grind the outer wall of the workpiece, thus processing it. Furthermore, the tool magazine allows for quick replacement of the grinding wheel in the grinding head mechanism as needed.

[0004] However, this device has significant drawbacks in actual operation. Since the processing of the workpiece is aimed at the circumferential outer wall of the workpiece, and the processing depth is often required, the above-mentioned device cannot meet the requirements when grinding the outer wall of the workpiece. Therefore, it is necessary to control the robotic arm to repeatedly disassemble and assemble the workpiece from the worktable to adjust the position of the workpiece. The operation is very cumbersome, and repeated actions may also cause the processed workpiece to fail to meet the manufacturing standards due to errors in the assembly position. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a CNC five-axis tool grinder. The technical problem this invention aims to solve is: how to improve the machining accuracy of workpieces.

[0006] The objective of this utility model can be achieved through the following technical solution: A CNC five-axis tool grinder includes a frame, on which a clamping device for clamping workpieces is provided. The frame is characterized by having a turntable rotatably connected to it, a long, horizontally arranged support base fixed on the turntable, a movable seat slidably connected to the support base along its length, and a driving component fixed on the support base and connected to the movable seat, capable of driving the movable seat to reciprocate. The clamping device is fixedly connected to the movable seat.

[0007] The difference between this application and the prior art lies in the following: a turntable is set on the frame, and a long, horizontally arranged support base is mounted on the turntable. A movable seat is slidably connected to the support base, and a clamping device for holding the workpiece is fixed to the movable seat. During the production process, specifically after the robotic arm clamps the workpiece onto the clamping device, and the outer peripheral wall of the workpiece is ground by the grinding head mechanism, the turntable is used to drive the support base, movable seat, and clamping device to rotate, thereby controlling the grinding amount of the workpiece by the grinding head mechanism. Furthermore, a driving component is used to drive the movable seat to slide on the support base to achieve the grinding position of the workpiece. The adjustment eliminates the need for repeated disassembly and assembly of the workpiece during processing, effectively reducing inconvenience. This setup also improves the surface machining accuracy of the workpiece. Furthermore, it's worth noting that this application employs a configuration with the turntable below and the moving seat above. The advantage of this configuration is that, throughout the entire processing, the turntable can only rotate on the frame, and the moving seat's movement is limited to adjusting the workpiece's position. Therefore, it effectively prevents the workpiece's position from shifting the turntable's rotation center, thus avoiding deviations in the workpiece's grinding amount and ensuring machining accuracy.

[0008] In the aforementioned CNC five-axis tool grinder, the bottom of the support base is fixed to the rotary table by fasteners, and both ends of the support base protrude beyond the top edge of the rotary table. This design ensures a larger adjustment range for the moving base, maximizing the adjustment range for the workpiece's machining position. Furthermore, the protrusion of both ends of the support base onto the rotary table effectively prevents interference between the grinding head mechanism and the rotary table during machining.

[0009] In the aforementioned CNC five-axis tool grinder, the driving component is a motor fixed to the top of a support base. A lead screw is provided along the length of the top of the support base, and one end of the lead screw is fixed to the drive shaft of the driving component via a coupling. A nut is fixed to the bottom of the movable seat and screwed onto the lead screw. Specifically, the movable seat is driven by the motor to rotate the lead screw. The lead screw and nut are threaded together, causing the nut to slide along the lead screw under the action of the threads, thus driving the movable seat. Alternatively, a rotary cylinder can be used as the driving component.

[0010] In the aforementioned CNC five-axis tool grinder, the top of the support base has drive component mounting seats and at least two bearing mounting seats spaced apart along its length. Both the drive component mounting seats and each bearing mounting seat are hollow. The drive component is fixed to the side wall of the drive component mounting seat with screws, and the drive shaft passes through the drive component mounting seat. Each bearing mounting seat has a bearing assembly fixedly installed. The two ends of the lead screw pass through two bearing mounting seats and are engaged with the inner rings of the two bearing assemblies. As a further specific solution, the drive component mounting seats ensure the installation stability of the drive component, and the bearing mounting seats, through the inner rings of the bearing assemblies installed inside, limit the two ends of the lead screw, preventing lead screw deviation while completing transmission.

[0011] In the aforementioned CNC five-axis tool grinder, the bottom of the movable seat has a mounting block with a mounting groove. The nut is embedded in the mounting groove and locked to the mounting block by screws. This design ensures a more secure positioning of the nut on the movable seat.

[0012] In the aforementioned CNC five-axis tool grinder, two slide rails are fixed to the top of the support base, located on both sides of the lead screw and parallel to it. Two sets of sliders are fixed to the bottom of the movable base, each set corresponding to one of the two slide rails. Based on this, the movement direction of the movable base is guided by the cooperation of the slide rails and sliders between the support base and the movable base.

[0013] Compared with existing technologies, this CNC five-axis tool grinding machine has the following advantages:

[0014] This application involves mounting a rotatable turntable on a frame, fixing a horizontally arranged support frame with both ends extending beyond the turntable edges to the turntable with screws, and mounting a movable seat on the support frame via a sliding connection. The movable seat carries a clamping device for holding the workpiece. The turntable, positioned at the rotation center, drives the workpiece to rotate, allowing for control of the grinding amount on the workpiece. Furthermore, the movement of the movable seat, driven by a drive component, adjusts the grinding position of the workpiece, thereby improving the processing accuracy of the workpiece while ensuring processing convenience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this CNC five-axis tool grinder.

[0016] Figure 2 This is a structural schematic diagram of this CNC five-axis tool grinder from another perspective.

[0017] Figure 3 yes Figure 2 A sectional view taken along the AA direction.

[0018] Figure 4 This is a schematic diagram of the support base.

[0019] Figure 5 This is a schematic diagram of the movable base.

[0020] In the diagram, 1 is the frame; 11 is the clamping device; 12 is the turntable; 2 is the support base; 21 is the driving component; 22 is the lead screw; 23 is the driving component mounting base; 24 is the bearing mounting base; 241 is the bearing assembly; 25 is the slide rail; 3 is the moving base; 31 is the nut; 32 is the mounting block; 321 is the mounting groove; and 33 is the slider. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1 As shown, this CNC five-axis tool grinder includes a frame 1, on which a clamping device 11 for holding the workpiece to be processed is provided. In addition, the frame 1 also includes a material tray, a tool magazine, a grinding head mechanism formed by a spindle system, a drive motor and a grinding wheel, and a cooling device integrated on the grinding head mechanism. It is worth mentioning that the clamping device 11, material tray, tool magazine, grinding head mechanism and cooling device mentioned in this application can all adopt existing technology. Their specific structures will not be described in detail in this application. However, in the actual operation and processing, this CNC five-axis tool grinder uses a robotic arm to pick up the workpiece to be processed from the material tray and assemble it into the clamping device 11. The grinding wheel in the grinding head mechanism grinds the outer surface of the workpiece to be processed, and the coolant sprayed by the cooling device cools the workpiece in a timely manner. In addition, during the entire processing, this grinder can change to a more suitable grinding wheel from the tool magazine according to the actual processing requirements of the workpiece to be processed.

[0023] Combination Figure 2 A cylindrical turntable 12 is provided on one side of the grinding head mechanism on the frame 1. This turntable is connected to the drive shaft of the drive device installed in the frame 1 and is driven to rotate by the drive component. A long and horizontally arranged support base 2 is installed on the turntable 12. Specifically, the support base 2 is screwed and locked onto the turntable 12, and both ends of the support base 2 protrude from the edge of the turntable 12. A movable seat 3 is also provided on the support base 2. A clamping device 11 for clamping the workpiece to be processed is screwed and locked onto the top of the movable seat 3. The movable seat 3 can slide and position along the length of the support base 2 with the clamping device 11.

[0024] Combination Figure 3-5A hollow drive component mounting base 23 and a bearing mounting base 24 are fixed to the top of the support base 2. The drive component mounting base 23 is located near one end edge of the support base 2. There are two bearing mounting bases 24 located behind the drive component mounting base 23, and the two bearing mounting bases 24 are spaced apart along the length of the support base 2. Each bearing mounting base 24 has a set of bearing assemblies 241 fixedly attached inside. A drive component 21 and a lead screw 22 are respectively provided on the top of the support base 2. The drive component 21 is a motor and is fixed to the drive component mounting base 23 by screws. The shaft passes through the drive component mounting base 23. Both ends of the lead screw 22 pass through two bearing mounting bases 24 and are clamped to the inner rings of two sets of bearing assemblies 241. One end of the lead screw 22 is connected and fixed to the drive shaft of the drive component 21 via a coupling. The clamping device 11 is specifically fixed to the top of the movable base 3. The bottom of the movable base 3 has a downwardly protruding mounting block 32 with a mounting groove 321. A nut 31, screwed into the lead screw 22, is located at the bottom of the movable base 3. The nut 31 is specifically engaged in the mounting groove 321 and locked to the mounting block 32 by screws. Furthermore, a slide rail 25 is fixed on the support base 2 on both sides of the lead screw 22, with each slide rail 25 parallel to the lead screw 22. At the bottom of the movable base 3, on both sides of the nut 31, a set of sliders 33 is fixed, with each set containing at least two sliders. The two sets of sliders 33 and the two slide rails 25 are slidably connected.

[0025] Working Principle: This embodiment mainly targets the processing of tap-like workpieces. A robotic arm clamps the workpiece from the tray and mounts it onto the clamping device 11. The rotation of the turntable 12 and the sliding motion of the movable seat 3 bring the workpiece surface into contact with the grinding wheel. The clamping device 11 drives the workpiece to rotate, while the grinding wheel rotates in the opposite direction to the workpiece, thus achieving the processing of the workpiece's outer circumference. Unlike existing technologies, this application utilizes the sliding motion of the movable seat 3 during processing to achieve grinding of different axial parts of the workpiece. In the actual grinding process, for the workpiece... The grinding process cannot be completed in a single feed. It requires the rotation of the turntable 12 to keep the outer surface of the workpiece in constant contact with the surface of the grinding wheel. The grinding action of the grinding wheel is used to grind away the excess material on the outer circumference of the workpiece. Simply put, the grinding amount in the same area is achieved by slow feed. Based on this, this application uses the turntable 12 at the bottom and the support base 2 and the moving base 3 at the top. This ensures that when the moving base 3 moves to adjust the axial outward position of the workpiece, the rotation center of the turntable 12 is maintained. The movement of the moving base 3 will not cause deviation in the grinding amount of the workpiece, thus effectively ensuring the machining accuracy.

[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0027] Although this document frequently uses terms such as frame 1, clamping device 11, turntable 12, support base 2, drive component 21, lead screw 22, drive component mounting base 23, bearing mounting base 24, bearing assembly 241, slide rail 25, moving base 3, nut 31, mounting block 32, mounting groove 321, and slider 33, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A CNC five-axis tool grinder, comprising a frame (1), wherein the frame (1) is provided with a clamping device (11) for clamping a workpiece, characterized in that, A turntable (12) is rotatably connected to the frame (1). A long, horizontally arranged support base (2) is fixed on the turntable (12). A movable seat (3) is slidably connected to the support base (2) along its length. A drive component (21) is fixed on the support base (2) and connected to the movable seat (3) and capable of driving the movable seat (3) to move back and forth. The clamping device (11) is fixedly connected to the movable seat (3).

2. The CNC five-axis tool grinder according to claim 1, characterized in that, The bottom of the support base (2) is fixed to the turntable (12) by fasteners, and both ends of the support base (2) protrude from the top edge of the turntable (12).

3. The CNC five-axis tool grinder according to claim 2, characterized in that, The driving component (21) is a motor and is fixed to the top of the support base (2). The top of the support base (2) is provided with a lead screw (22) along the length direction. One end of the lead screw (22) is fixed to the drive shaft of the driving component (21) through a coupling. The bottom of the movable seat (3) is fixed with a nut (31) and the nut (31) is screwed onto the lead screw (22).

4. The CNC five-axis tool grinder according to claim 3, characterized in that, The support base (2) has a drive component mounting base (23) and at least two bearing mounting bases (24) spaced apart along the length direction at its top. The drive component mounting base (23) and each of the bearing mounting bases (24) are hollow. The drive component (21) is fixed to the side wall of the drive component mounting base (23) by screws and the drive shaft passes through the drive component mounting base (23). Each of the bearing mounting bases (24) is fixed with a bearing assembly (241). The two ends of the lead screw (22) pass through the two bearing mounting bases (24) and are engaged with the inner rings of the two bearing assemblies (241).

5. The CNC five-axis tool grinder according to claim 3 or 4, characterized in that, The bottom of the movable seat (3) has a mounting block (32), and the mounting block (32) has a mounting groove (321). The nut (31) is embedded in the mounting groove (321) and is screwed and locked to the mounting block (32) by screws.

6. The CNC five-axis tool grinder according to claim 5, characterized in that, The top of the support base (2) is fixed with two slide rails (25), which are located on both sides of the lead screw (22) and are parallel to the lead screw (22). The bottom of the movable base (3) is fixed with two sets of sliders (33), which are slidably connected to the two slide rails (25) in a one-to-one correspondence.

Images