Truss on numerical control machine tool

Abstract

The utility model discloses a truss on a numerical control machine tool. The mechanical arm is used for being connected with a manipulator, and the mechanical arm is located on the outer side of the support; the displacement mechanism is used for fixing the mechanical arm, the bottom of the displacement mechanism is fixedly connected with the top of the support, and the top of the displacement mechanism makes contact with the outer side of the mechanical arm. According to the device, through the arrangement of the protection assembly, after a workpiece reaches a designated position, if a driving motor is not controlled to stop rotating in time, a lead screw can continuously rotate, and at the moment, a threaded lantern ring drives sliding blocks to slide to the positions, without threads, of the two sides of the lead screw; and the threaded lantern ring is re-clamped at the threaded position on the surface of the screw rod, so that the truss structure can be prevented from being damaged when the driving motor is out of control.

Description

Technical Field

[0001] The utility model relates to the technical field of trusses, in particular to a truss on a numerically controlled machine tool. Background Art

[0002] The truss on the CNC machine tool is a structural device used for support and movement. It is made of rigid materials and has high strength and stability. It can enable the processing parts of the CNC machine tool to move accurately within a certain space, complete loading and unloading, handling and other actions, improve production efficiency and processing accuracy, and is an important part of the CNC machine tool to achieve automated production.

[0003] In the prior art, a motor is usually used to drive a screw rod to control the movement of a robotic arm. When the robot grabs a workpiece and moves it, if the motor is not stopped in time after the workpiece reaches the specified position, the moving device stuck on the surface of the screw rod will contact the edge of the truss during movement, causing it to slip against the screw rod, thereby causing the robotic arm to be unable to move. Utility Model Content

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a truss on a CNC machine tool, comprising: a bracket; a mechanical arm, the mechanical arm is used to connect a manipulator, the mechanical arm is located outside the bracket; a displacement mechanism, the displacement mechanism is used to fix the mechanical arm, the bottom of the displacement mechanism is fixedly connected to the top of the bracket, the top of the displacement mechanism is in contact with the outside of the mechanical arm, and the displacement mechanism can drive the mechanical arm to move, so as to complete the process of grabbing the workpiece;

[0005] The displacement mechanism includes a truss beam, the top of which is fixedly connected to a guide plate, the top of which is fixedly connected to a drive motor via a frame, the output end of the drive motor is fixedly connected to a lead screw via a coupling, the outer wall of the lead screw is threadedly connected to a protective component, the top of the protective component is fixedly connected to a limit component, the drive motor drives the lead screw to rotate, and at this time the protective component drives the limit component to slide along the surface of the guide plate.

[0006] Preferably, the bottom of the truss is fixedly connected to the top of the bracket, the two sides of the screw rod are rotatably connected to the top of the truss through bearings, the outer wall of the guide plate is slidably connected to the outer side of the protection component, the outer side of the limit component is in contact with the outer side of the mechanical arm, the protection component can drive the limit component to move, and the limit component can drive the mechanical arm to move relative to the truss.

[0007] Preferably, the protective component includes a sliding block, the top of the sliding block is fixedly connected to a base, the outer wall of the sliding block is fixedly connected to a limiting column, and the limiting column is symmetrically arranged along the central axis of the sliding block, the outer wall of the limiting column is slidably connected to a threaded ring, and the threaded ring is fixedly connected to a compression spring on the side close to the sliding block. When the screw rod rotates, the sliding block slides to a position where no threads are provided on both sides of the screw rod. At this time, the threaded ring slides along the limiting column to the side close to the sliding block and forces the compression spring to be compressed.

[0008] Preferably, the outer wall of the sliding block is slidably connected to the outer wall of the guide plate, the top of the guide plate is slidably connected to the bottom of the base, the inner wall of the threaded collar is threadedly connected to the outer wall of the screw rod, and one end of the compression spring away from the threaded collar is connected to the top of the sliding block. When the drive motor is reversed, under the action of the elastic force of the compression spring, the threaded collar is re-stuck in the position where the thread is opened on the surface of the screw rod.

[0009] Preferably, the limit assembly includes a limit frame, the inner wall of the top of the limit frame is fixedly connected to a hydraulic telescopic rod, the output end of the hydraulic telescopic rod is fixedly connected to a pressure block, the inner wall of the pressure block is slidably connected to a limit block, the top of the limit block is fixedly connected to a return spring, and when the hydraulic telescopic rod drives the pressure block to move downward, the limit block can be inserted into a rectangular limit groove on the surface of the mounting plate to limit it.

[0010] Preferably, the bottom of the limit frame is fixedly connected to the top of the base, the top of the return spring is fixedly connected to the top of the inner wall of the pressure block, the inner wall of the pressure block is slidably connected to the outer wall of the limit frame, and the pressure block can press the mounting plate and the base when moving downward.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model sets a protective component. When the workpiece reaches the specified position, if the driving motor is not stopped in time, the screw will continue to rotate. At this time, the threaded collar drives the sliding block to slide to the position where no threads are provided on both sides of the screw. When the driving motor is reversed, the threaded collar is re-stuck at the position where the threads are provided on the surface of the screw under the elastic force of the compression spring, thereby preventing the truss structure from being damaged when the driving motor is out of control.

[0013] 2. The utility model sets a limit assembly. When fixing the robotic arm, the mounting plate at the bottom of the base of the robotic arm is inserted into the limit frame. At this time, the hydraulic telescopic rod drives the pressure block to move downward, so that the limit block is inserted into the rectangular limit groove on the surface of the mounting plate. At the same time, the bottom of the pressure block stops when the mounting plate and the base are pressed tightly. In this way, the robotic arm can be fixed. When the hydraulic telescopic rod moves upward, the robotic arm can be quickly removed to facilitate its maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the displacement mechanism of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the protective assembly of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the limit assembly of the utility model.

[0019] In the figure: 1. bracket; 2. displacement mechanism; 3. mechanical arm; 21. truss; 22. guide plate; 23. drive motor; 24. screw; 25. protection assembly; 26. limit assembly; 251. sliding block; 252. base; 253. limit column; 254. threaded collar; 255. compression spring; 261. limit frame; 262. hydraulic telescopic rod; 263. pressure block; 264. limit block; 265. reset spring. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0021] Example:

[0022] See also Figure 1 - Figure 5 The utility model provides a technical solution: a truss on a CNC machine tool, comprising:

[0023] Bracket 1; mechanical arm 3, which is used to connect the manipulator, and the mechanical arm 3 is located outside the bracket 1; displacement mechanism 2, which is used to fix the mechanical arm 3, the bottom of the displacement mechanism 2 is fixedly connected to the top of the bracket 1, and the top of the displacement mechanism 2 is in contact with the outside of the mechanical arm 3. The truss is erected on the top of the CNC machine tool, and the bottom of the bracket 1 is fixed to the top of the CNC machine tool, and then the manipulator is installed at the bottom of the mechanical arm 3, and finally the displacement mechanism 2 drives the mechanical arm 3 to move, so that the workpiece grabbing process can be completed;

[0024] The displacement mechanism 2 includes a truss 21, a guide plate 22 is fixedly connected to the top of the truss 21, a drive motor 23 is fixedly connected to the top of the truss 21 through a frame, a screw rod 24 is fixedly connected to the output end of the drive motor 23 through a coupling, a protective component 25 is threadedly connected to the outer wall of the screw rod 24, a limit component 26 is fixedly connected to the top of the protective component 25, the bottom of the truss 21 is fixedly connected to the top of the bracket 1, both sides of the screw rod 24 are rotatably connected to the top of the truss 21 through bearings, the outer wall of the guide plate 22 is slidably connected to the outer side of the protective component 25, the outer side of the limit component 26 is in contact with the outer side of the mechanical arm 3, when the mechanical arm 3 moves, the drive motor 23 drives the screw rod 24 to rotate, at this time the protective component 25 drives the limit component 26 to slide along the surface of the guide plate 22, at this time the mechanical arm 3 fixed by the limit component 26 can move relative to the truss 21, thereby adjusting the position of the mechanical arm 3.

[0025] The protection component 25 includes a sliding block 251, the top of the sliding block 251 is fixedly connected to a base 252, the outer wall of the sliding block 251 is fixedly connected to a limiting column 253, and the limiting column 253 is symmetrically arranged along the central axis of the sliding block 251, the outer wall of the limiting column 253 is slidably connected to a threaded collar 254, and a compression spring 255 is fixedly connected to the side of the threaded collar 254 close to the sliding block 251, the outer wall of the sliding block 251 is slidably connected to the outer wall of the guide plate 22, the top of the guide plate 22 is slidably connected to the bottom of the base 252, the inner wall of the threaded collar 254 is threadedly connected to the outer wall of the screw rod 24, and the end of the compression spring 255 away from the threaded collar 254 is connected to the top of the sliding block 251. When the workpiece reaches the specified position, if it is not operated in time When the control driving motor 23 stops rotating, the screw rod 24 will continue to rotate. At this time, the threaded ring 254 moves with the rotation of the screw rod 24, and drives the sliding block 251 and the base 252 to approach the baffles on both sides of the truss beam 21. When the sliding block 251 slides to the position where no threads are provided on both sides of the screw rod 24, the threaded ring 254 slides along the first limiting column 253 to the side close to the sliding block 251, and forces the compression spring 255 to be compressed until the threaded ring 254 slides to the position where no threads are provided on both sides of the screw rod 24. When the driving motor 23 is reversed, under the elastic force of the compression spring 255, the threaded ring 254 is re-stuck at the position where the threads are provided on the surface of the screw rod 24, thereby preventing the truss structure from being damaged when the driving motor 23 is out of control.

[0026] The limit assembly 26 includes a limit frame 261, the inner wall of the top of the limit frame 261 is fixedly connected to a hydraulic telescopic rod 262, the output end of the hydraulic telescopic rod 262 is fixedly connected to a pressure block 263, the inner wall of the pressure block 263 is slidably connected to a limit block 264, the top of the limit block 264 is fixedly connected to a return spring 265, the bottom of the limit frame 261 is fixedly connected to the top of the base 252, the top of the return spring 265 is fixedly connected to the top of the inner wall of the pressure block 263, the inner wall of the pressure block 263 is slidably connected to the outer wall of the limit frame 261, and the mechanical arm 3 is moved. When fixing, the mounting plate at the bottom of the base of the robotic arm 3 is inserted into the limit frame 261. At this time, the hydraulic telescopic rod 262 drives the pressure block 263 to move downward. During this process, the limit block 264 is inserted into the rectangular limit groove on the surface of the mounting plate. Then the pressure block 263 continues to move downward, so that the return spring 265 is compressed until the bottom of the pressure block 263 presses the mounting plate and the base 252 tightly and stops. In this way, the robotic arm 3 can be fixed. When the hydraulic telescopic rod 262 moves upward, the robotic arm 3 can be quickly removed to facilitate its maintenance.

[0027] Working principle:

[0028] When in use, the truss is erected on the top of the CNC machine tool, and the bottom of the bracket 1 is fixed to the top of the CNC machine tool, and then the manipulator is installed at the bottom of the mechanical arm 3, and finally the displacement mechanism 2 drives the mechanical arm 3 to move, so that the workpiece grabbing process can be completed;

[0029] When the mechanical arm 3 moves, the driving motor 23 drives the screw rod 24 to rotate, and the protection component 25 drives the limit component 26 to slide along the surface of the guide plate 22. At this time, the mechanical arm 3 fixed by the limit component 26 can move relative to the truss beam 21, thereby adjusting the position of the mechanical arm 3;

[0030] When the workpiece reaches the specified position, if the driving motor 23 is not stopped in time, the screw rod 24 will continue to rotate. At this time, the threaded ring 254 moves with the rotation of the screw rod 24, and drives the sliding block 251 and the base 252 to approach the baffles on both sides of the truss 21. When the sliding block 251 slides to the position where no threads are provided on both sides of the screw rod 24, the threaded ring 254 slides along the first limiting column 253 to the side close to the sliding block 251, and forces the compression spring 255 to be compressed until the threaded ring 254 slides to the position where no threads are provided on both sides of the screw rod 24. When the driving motor 23 reverses, under the elastic force of the compression spring 255, the threaded ring 254 is re-stuck at the position where the threads are provided on the surface of the screw rod 24, thereby preventing the truss structure from being damaged when the driving motor 23 is out of control.

[0031] When fixing the robot arm 3, the mounting plate at the bottom of the base of the robot arm 3 is inserted into the limit frame 261. At this time, the hydraulic telescopic rod 262 drives the pressure block 263 to move downward. During this process, the limit block 264 is inserted into the rectangular limit groove on the surface of the mounting plate. Then the pressure block 263 continues to move downward, so that the return spring 265 is compressed until the bottom of the pressure block 263 presses the mounting plate and the base 252 tightly and stops. In this way, the robot arm 3 can be fixed. When the hydraulic telescopic rod 262 moves upward, the robot arm 3 can be quickly removed to facilitate its maintenance.

[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A truss on a CNC machine tool, characterized in that: include: Bracket (1); A mechanical arm (3), the mechanical arm (3) being used to connect to the mechanical hand, the mechanical arm (3) being located outside the bracket (1); A displacement mechanism (2), the displacement mechanism (2) being used to fix the mechanical arm (3), the bottom of the displacement mechanism (2) being fixedly connected to the top of the bracket (1), and the top of the displacement mechanism (2) being in contact with the outer side of the mechanical arm (3); The displacement mechanism (2) comprises a truss (21), the top of the truss (21) is fixedly connected to a guide plate (22), the top of the truss (21) is fixedly connected to a drive motor (23) via a frame, the output end of the drive motor (23) is fixedly connected to a screw rod (24) via a coupling, the outer wall of the screw rod (24) is threadedly connected to a protection component (25), and the top of the protection component (25) is fixedly connected to a limiter component (26).

2. The truss on a CNC machine tool according to claim 1, characterized in that: The bottom of the truss (21) is fixedly connected to the top of the bracket (1), the two sides of the screw rod (24) are rotatably connected to the top of the truss (21) through bearings, the outer wall of the guide plate (22) is slidably connected to the outer side of the protection component (25), and the outer side of the limit component (26) is in contact with the outer side of the mechanical arm (3).

3. The truss on a CNC machine tool according to claim 1, characterized in that: The protection component (25) comprises a sliding block (251), the top of the sliding block (251) is fixedly connected to a base (252), the outer wall of the sliding block (251) is fixedly connected to a limiting column (253), and the limiting column (253) is symmetrically arranged along the central axis of the sliding block (251), the outer wall of the limiting column (253) is slidably connected to a threaded collar (254), and the side of the threaded collar (254) close to the sliding block (251) is fixedly connected to a compression spring (255).

4. The truss on a CNC machine tool according to claim 3, characterized in that: The outer wall of the sliding block (251) is slidably connected to the outer wall of the guide plate (22), the top of the guide plate (22) is slidably connected to the bottom of the base (252), the inner wall of the threaded collar (254) is threadedly connected to the outer wall of the screw rod (24), and one end of the compression spring (255) away from the threaded collar (254) is connected to the top of the sliding block (251).

5. The truss on a CNC machine tool according to claim 1, characterized in that: The limit assembly (26) comprises a limit frame (261), the inner wall at the top of the limit frame (261) is fixedly connected to a hydraulic telescopic rod (262), the output end of the hydraulic telescopic rod (262) is fixedly connected to a pressure block (263), the inner wall of the pressure block (263) is slidably connected to a limit block (264), and the top of the limit block (264) is fixedly connected to a return spring (265).

6. The truss on a CNC machine tool according to claim 5, characterized in that: The bottom of the limiting frame (261) is fixedly connected to the top of the base (252), the top of the return spring (265) is fixedly connected to the top of the inner wall of the pressing block (263), and the inner wall of the pressing block (263) is slidably connected to the outer wall of the limiting frame (261).

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