Movable cross beam position sensing device

Abstract

The utility model belongs to the technical field of machine tools, and discloses a movable cross beam position sensing device which comprises a position sensing mechanism, the position sensing mechanism comprises a floating nut and a microswitch, the microswitch is fixedly installed below a movable cross beam through an installation piece, and the floating nut is sleeved on a lead screw used for driving the movable cross beam to move up and down in a threaded mode. The floating nut is located at the bottom of the movable cross beam, the upper bottom of the floating nut can make contact with the microswitch, and therefore the microswitch triggers signals, the movable cross beam structure can sense the operation situation of the movable cross beam, rapidly respond to collision events, protect the rigidity of the cross beam structure, and prevent deformation from affecting the machining precision.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to a moving crossbeam position sensing device. Background Technology

[0002] The moving beam gantry milling machine is a high-performance CNC machine tool designed for machining large, heavy, or structurally complex workpieces. It is widely used in aerospace, shipbuilding, energy equipment, and precision mold processing. Its core advantage lies in the fact that the crossbeam (moving beam) can move vertically along the two side columns, thus flexibly adapting to machining needs at different heights, making it particularly suitable for multi-face machining of ultra-large workpieces.

[0003] In actual machining processes, the following core issues need to be addressed with moving beam gantry milling machines:

[0004] Collision avoidance requirements: The crossbeam may interfere with the workpiece, fixture or surrounding equipment during the lifting process, and its position needs to be monitored in real time to avoid damage.

[0005] Precise hierarchical positioning: For different processing stages, the crossbeam needs to be stopped in sections at designated positions, requiring high-precision position sensing.

[0006] To address this, a moving beam position sensing device is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a moving beam position sensing device, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] A moving crossbeam position sensing device includes a position sensing mechanism, which includes a floating nut and a micro switch. The micro switch is fixedly installed below the moving crossbeam by a mounting component. The floating nut is threaded onto a lead screw used to drive the moving crossbeam to move up and down. The floating nut is located at the bottom of the moving crossbeam, and the upper bottom of the floating nut can contact the micro switch, thereby triggering a signal to the micro switch.

[0010] According to the present invention, a moving crossbeam position sensing device includes a mounting base, which is detachably mounted on the bottom of the moving crossbeam. A mounting seat is fixedly mounted on one side of the mounting base, and a micro switch is fixedly mounted on the lower end of the mounting seat.

[0011] In a moving crossbeam position sensing device according to the present invention, the fixed base is provided with a mounting hole, and the upper end of the fixing bolt passes through the mounting hole and is threaded to the bottom of the moving crossbeam.

[0012] According to the present invention, a moving beam position sensing device further includes a guide pin, which is arranged in an inverted T shape. The upper end of the guide pin slides through the floating nut and is then threadedly fixed on the fixed base.

[0013] In a moving beam position sensing device according to the present invention, at least two guide pins are provided.

[0014] In a moving beam position sensing device according to the present invention, a buffer disc spring is sleeved on the guide pin, the bottom of the buffer disc spring presses against the lower top of the guide pin, and the top of the buffer disc spring abuts against the upper bottom of the floating nut.

[0015] This utility model has at least the following beneficial effects:

[0016] This invention can sense the movement of the moving crossbeam, quickly respond to collision events, protect the rigidity of the crossbeam structure, and prevent deformation from affecting processing accuracy. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model installed on a moving beam gantry milling machine;

[0019] Figure 2 This is a partial structural diagram of the present invention installed on a moving beam gantry milling machine;

[0020] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model.

[0022] Explanation of icon numbers:

[0023] 1. Moving crossbeam; 101. Fixed seat; 1011. Mounting hole; 1012. Fixing bolt; 2. Workpiece; 3. Position sensing mechanism; 301. Floating nut; 302. Guide pin; 303. Buffer disc spring; 304. Mounting seat; 305. Micro switch; 4. Lead screw. Detailed Implementation

[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Please refer to Figures 1 to 4 As shown, an embodiment of this utility model provides a moving crossbeam position sensing device, including a position sensing mechanism 3. The position sensing mechanism 3 includes a floating nut 301 and a micro switch 305. The micro switch 305 is fixedly installed below the moving crossbeam 1 by a mounting component. The floating nut 301 is threaded onto a lead screw 4 used to drive the moving crossbeam 1 to move up and down. The floating nut 301 is located at the bottom of the moving crossbeam 1, and the upper bottom of the floating nut 301 can contact the micro switch 305, thereby triggering a signal for the micro switch 305.

[0026] When the lead screw 4 rotates, it drives the floating nut 301, which is threaded with it, to move up and down. When the moving crossbeam 1 encounters an obstacle and stops moving during its descent, the lead screw 4 continues to rotate due to the power input, causing the floating nut 301 to continue to move down relative to the moving crossbeam 1 until the upper bottom of the floating nut 301 contacts the micro switch 305, triggering the micro switch 305 to send a signal, thereby sensing the position of the moving crossbeam 1.

[0027] In this embodiment, the mounting component includes a fixed base 101, which is detachably mounted on the bottom of the moving crossbeam 1. A mounting seat 304 is fixedly mounted on one side of the fixed base 101, and a micro switch 305 is fixedly mounted on the lower end of the mounting seat 304. The fixed base 101 serves as the mounting foundation and is detachably mounted on the bottom of the moving crossbeam 1 for easy installation and maintenance. The mounting seat 304, fixed to one side of the fixed base 101, provides a mounting position for the micro switch 305, ensuring that the micro switch 305 is stably positioned below the moving crossbeam 1 and can accurately sense the touch of the floating nut 301.

[0028] In this embodiment, the mounting base 101 has a mounting hole 1011, and the upper end of the fixing bolt 1012 passes through the mounting hole 1011 and is threaded to the bottom of the moving crossbeam 1.

[0029] By passing the fixing bolt 1012 through the mounting hole 1011 on the fixing seat 101 and threading it to the bottom of the moving crossbeam 1, a stable connection between the fixing seat 101 and the moving crossbeam 1 is achieved, ensuring that the fixing seat 101 and the micro switch 305 and other components installed on it will not loosen or shift during the operation of the device, thus ensuring the normal operation of the sensing device.

[0030] In this embodiment, a guide pin 302 is also included. The guide pin 302 is arranged in an inverted T shape. The upper end of the guide pin 302 slides through the floating nut 301 and is then threadedly fixed on the fixed seat 101.

[0031] On the one hand, the guide pin 302 slides through the floating nut 301, restricting the floating nut 301 from rotating on its own when it rotates with the lead screw 4, and it can only move up and down along the axial direction of the guide pin 302; on the other hand, the guide pin 302 is threadedly fixed on the fixed seat 101, ensuring the stability of the position of the guide pin 302, thereby ensuring the accuracy and stability of the movement of the floating nut 301.

[0032] Furthermore, at least two guide pins 302 are provided.

[0033] Multiple guide pins 302 can guide and prevent the floating nut 301 from rotating in multiple directions. Compared with a single guide pin, they can better ensure the stability and accuracy of the floating nut 301's up and down movement, prevent the floating nut 301 from deviating or shaking during movement, and improve the reliability of the position sensing device.

[0034] Furthermore, a buffer disc spring 303 is fitted on the guide pin 302, with the bottom of the buffer disc spring 303 pressing against the bottom of the guide pin 302 and the top of the buffer disc spring 303 abutting against the top of the floating nut 301.

[0035] Working principle: When the floating nut 301 moves up and down, the buffer disc spring 303 can play a buffering role. When the downward movement of the moving crossbeam 1 is obstructed, and the lead screw 4 continues to drive the floating nut 301 to move down and touch the micro switch 305, the buffer disc spring 303 can reduce the impact force of the floating nut 301 on the micro switch 305 and protect the micro switch 305; at the same time, when the moving crossbeam 1 rises, the buffer disc spring 303 can also keep the floating nut 301 in close contact with the bottom of the moving crossbeam 1, ensuring the timeliness and accuracy of position sensing.

[0036] Working principle:

[0037] When the moving crossbeam position sensing device is working, the lead screw 4 rotates under power drive, causing the floating nut 301 threaded on it to move up and down. The guide pin 302 restricts the rotation of the floating nut 301, allowing it to move only along the axial direction of the guide pin 302. Multiple guide pins 302 ensure the smooth movement of the floating nut 301. The buffer disc spring 303 acts as a buffer when the floating nut 301 touches the micro switch 305, and also keeps the floating nut 301 in close contact with the bottom of the moving crossbeam 1. When the moving crossbeam 1 descends and encounters the workpiece 2 or other obstacles and stops moving, while the lead screw 4 continues to rotate, the floating nut 301 continues to move downward relative to the moving crossbeam 1 until the upper bottom of the floating nut 301 touches the micro switch 305, which is fixed below the moving crossbeam 1 by the fixed seat 101 and the mounting seat 304. This triggers the micro switch 305 to send a signal, thereby sensing the position of the moving crossbeam 1 for subsequent operations such as clearing collisions or graded positioning.

[0038] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A moving crossbeam position sensing device, characterized by, The position sensing mechanism (3) comprises a floating nut (301) and a micro switch (305), the micro switch (305) is fixedly installed below the moving cross beam (1) through a mounting piece, the floating nut (301) is threadedly sleeved on a lead screw (4) for driving the moving cross beam (1) to move up and down, the floating nut (301) is located at the bottom of the moving cross beam (1), the upper bottom of the floating nut (301) can contact the micro switch (305), so that the micro switch (305) triggers a signal.

2. A position sensing device for a moving crossbeam according to claim 1, characterized in that The mounting piece comprises a fixed seat (101), the fixed seat (101) is detachably installed at the bottom of the moving cross beam (1), one side of the fixed seat (101) is fixedly installed with a mounting seat (304), and the micro switch (305) is fixedly installed at the lower end of the mounting seat (304).

3. A position sensing device for a moving crossbeam according to claim 2, characterized in that: A mounting hole (1011) is formed in the fixed seat (101), and the upper end of a fixing bolt (1012) penetrates through the mounting hole (1011) and is threadedly fixed at the bottom of the moving cross beam (1).

4. A position sensing device for a moving crossbeam according to claim 3, characterized in that: Further comprising a guide pin (302), the guide pin (302) is arranged in an inverted T shape, the upper end of the guide pin (302) is slidably penetrated through the floating nut (301) and is threadedly fixedly installed on the fixed seat (101).

5. A position sensing device for a moving crossbeam according to claim 4, characterized in that: The guide pin (302) is not less than two.

6. A position sensing device for a moving crossbeam according to claim 5, characterized in that: A buffer disc spring (303) is sleeved on the guide pin (302), the bottom of the buffer disc spring (303) is pressed against the lower top of the guide pin (302), and the top of the buffer disc spring (303) abuts against the upper bottom of the floating nut (301).

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