Anti-collision detection device of gantry machine tool

Abstract

The utility model relates to the technical field of machine tool anti-collision detection, in particular to an anti-collision detection device of a gantry machine tool. Comprising a gantry machine tool body, a mounting shell, a transmission assembly and a distance measuring sensor. A main shaft is mounted on the gantry machine tool body; the mounting shell is mounted on the main shaft, and a through hole is formed in the mounting shell; the transmission assembly comprises a first winding shaft, a second winding shaft, a transmission belt and a second servo motor. A mounting frame is mounted on the periphery of the transmission belt, the distance measuring sensor is rotationally mounted on the mounting frame, and a first servo motor used for driving the distance measuring sensor to rotate is mounted on the mounting frame. According to the technical scheme, multi-angle detection work can be achieved, the detection range is wide, only one detection probe needs to be arranged, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool anti-collision detection technology, and in particular to an anti-collision detection device for a gantry machine tool. Background Technology

[0002] Gantry milling machines (also known as gantry milling machines or gantry machining centers) are devices used for machining large workpieces and are widely used in machinery manufacturing, aerospace, automotive industries, and other fields. Collision avoidance technology is crucial in gantry milling machines, designed to prevent collisions between machine tool components or workpieces during machining, thereby ensuring machining accuracy, equipment safety, and production efficiency. Here are some common collision avoidance technologies and measures for gantry milling machines: installing collision sensors (such as force sensors and ultrasonic sensors) to monitor the machine tool's status in real time, enabling timely alarms or machine shutdowns when abnormalities are detected; cameras and vision systems: using cameras and computer vision technology to monitor the machine tool and workpiece, detecting potential collision risks.

[0003] In order to achieve detection at various angles, sensors are usually installed in multiple directions of movement of the spindle, which increases the detection cost. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an anti-collision detection device for gantry milling machines.

[0005] The technical solution of this utility model is a collision avoidance detection device for a gantry milling machine, comprising:

[0006] The gantry milling machine body, on which the spindle is mounted;

[0007] The mounting housing is mounted on the spindle and has through holes.

[0008] The transmission assembly includes a first take-up shaft, a second take-up shaft, a transmission belt, and a second servo motor. Both the first and second take-up shafts are rotatably mounted inside the mounting housing. The second servo motor is mounted inside the mounting housing and its output shaft is connected to the first take-up shaft. One end of the transmission belt is fixedly wound around the first take-up shaft, and the other end of the transmission belt moves through a perforation, wraps around the outside of the mounting housing once, and then passes back through the perforation and is fixedly wound around the second take-up shaft. An elastic reset assembly is installed on the second take-up shaft.

[0009] The ranging sensor has a mounting bracket on the outer periphery of the transmission belt. The ranging sensor is rotatably mounted on the mounting bracket, and a first servo motor for driving the rotation of the ranging sensor is mounted on the mounting bracket.

[0010] Preferably, a first drive shaft is rotatably mounted at each of the four corners on the outer side of the mounting housing, and two second drive shafts are rotatably mounted on the mounting housing near the perforation position. The two second drive shafts are located on both sides of the perforation, and the two second drive shafts and the four first drive shafts are all located on the inner side of the transmission belt.

[0011] Preferably, both the first drive shaft and the second drive shaft are provided with annular grooves.

[0012] Preferably, the spacing between the four sides of the mounting housing and the corresponding sides of the transmission belt is different.

[0013] Preferably, a positioning block is provided on the mounting housing near the perforation position.

[0014] Preferably, the elastic reset assembly includes a cylinder and a measuring tape spring. The cylinder is fixed to the inner wall of the mounting housing, the end of the second take-up shaft is movably located inside the cylinder, the measuring tape spring is installed inside the cylinder, and one end of the measuring tape spring is connected to the second take-up shaft.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: the present invention can drive the ranging sensor to move along the periphery of the mounting housing by setting a transmission component, and can drive the ranging sensor to rotate by the installed first servo motor, thereby realizing multi-angle detection, with a wide detection range and cost savings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the housing and transmission belt in this utility model.

[0018] Figure 3 This is a cross-sectional view of the mounting housing in this utility model.

[0019] Reference numerals in the attached drawings: 1. Gantry machine tool body; 101. Spindle; 2. Mounting housing; 201. Through hole; 3. Transmission belt; 4. Mounting bracket; 5. Distance sensor; 6. First servo motor; 7. First drive shaft; 8. Second drive shaft; 9. Positioning block; 10. Cylinder; 11. Measuring tape spring; 12. Second servo motor; 13. First winding shaft; 14. Second winding shaft. Detailed Implementation

[0020] Example 1

[0021] like Figures 1-3 As shown in the figure, the anti-collision detection device for a gantry milling machine proposed in this embodiment includes a gantry milling machine body 1, a mounting housing 2, a transmission assembly, and a distance measuring sensor 5.

[0022] A spindle 101 is mounted on the main body 1 of the gantry milling machine. A mounting housing 2 is mounted on the spindle 101, and a through hole 201 is provided on the mounting housing 2. The transmission assembly includes a first take-up shaft 13, a second take-up shaft 14, a transmission belt 3, and a second servo motor 12. The first take-up shaft 13 and the second take-up shaft 14 are both rotatably mounted inside the mounting housing 2. The second servo motor 12 is mounted inside the mounting housing 2, and its output shaft is connected to the first take-up shaft 13. One end of the transmission belt 3 is fixedly wound around the first take-up shaft 13, and the other end of the transmission belt 3 movably passes through the through hole 201, wraps around the outside of the mounting housing 2 once, and then passes back through the through hole 201 and is fixedly wound around the second take-up shaft 14. An elastic reset assembly is installed on shaft 14. The elastic reset assembly includes a cylinder 10 and a measuring tape spring 11. The cylinder 10 is fixed on the inner wall of the mounting housing 2. The end of the second take-up shaft 14 is movably located inside the cylinder 10. The measuring tape spring 11 is installed inside the cylinder 10, and one end of the measuring tape spring 11 is connected to the second take-up shaft 14. The installed elastic reset assembly enables the second take-up shaft 14 to rotate automatically when the first take-up shaft 13 unwinds the transmission belt 3, so that the transmission belt 3 is in a taut state. A mounting bracket 4 is installed on the outer periphery of the transmission belt 3. The distance sensor 5 is rotatably mounted on the mounting bracket 4. A first servo motor 6 for driving the distance sensor 5 to rotate is installed on the mounting bracket 4.

[0023] The spacing between the four sides of the mounting housing 2 and the corresponding sides of the transmission belt 3 is different. This arrangement ensures that when the distance sensor 5 moves to each side of the mounting housing 2, the detected distance between it and the side wall of the mounting housing 2 is different, thus enabling quick positioning of the distance sensor 5. Assuming that the main shaft 101 moves to the right, the distance sensor 5 is driven to rotate backward first, so that the detection end of the distance sensor 5 faces the inner wall of the mounting housing 2. When the distance sensor 5 moves to the right side of the main shaft 101, the distance sensor 5 is driven to rotate and reset. A positioning block 9 is provided on the mounting housing 2 near the perforation 201. When the distance sensor 5 detects the positioning block 9, the distance sensor 5 is driven to start moving in the opposite direction.

[0024] In this embodiment, the second servo motor 12 drives the first take-up shaft 13 to rotate counterclockwise, thereby winding the transmission belt 3 and driving it to move. The second servo motor 12 drives the second servo motor 12 to rotate clockwise, thereby unwinding the transmission belt 3 and causing it to move in the opposite direction. Under the elastic force of the measuring tape spring 11, the second take-up shaft 14 is driven to rotate, thus keeping the transmission belt 3 taut. During the movement of the transmission belt 3, the distance sensor 5 can be moved. When the spindle 101 moves in a certain direction, the distance sensor 5 is driven to move to the corresponding position. When an object blocks the movement direction of the distance sensor 5, the detection value of the distance sensor 5 changes and feeds the data back to the controller. The controller then stops the machine tool, thereby achieving the effect of preventing collisions.

[0025] Example 2

[0026] like Figure 2 and Figure 3 As shown in this embodiment, a collision avoidance detection device for a gantry milling machine is proposed. Compared with Embodiment 1, in this embodiment, a first drive shaft 7 is rotatably installed at each of the four corners on the outer side of the mounting housing 2. Two second drive shafts 8 are rotatably installed on the mounting housing 2 near the perforation 201. The two second drive shafts 8 are located on both sides of the perforation 201, and the two second drive shafts 8 and the four first drive shafts 7 are all located on the inner side of the transmission belt 3. Annular grooves are provided on both the first drive shafts 7 and the second drive shafts 8. The installed second drive shafts 8 and first drive shafts 7 can reduce the friction generated by the transmission belt 3 during movement, facilitating the movement of the transmission belt 3. The annular grooves are used to limit the movement of the transmission belt 3.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A collision avoidance detection device for a gantry milling machine, characterized in that, include: The gantry machine tool body (1) is equipped with a spindle (101); Mounting housing (2), which is mounted on spindle (101), and has a through hole (201) on it; The transmission assembly includes a first take-up shaft (13), a second take-up shaft (14), a transmission belt (3), and a second servo motor (12). The first take-up shaft (13) and the second take-up shaft (14) are rotatably mounted on the inner side of the mounting housing (2). The second servo motor (12) is mounted on the inner side of the mounting housing (2) and its output shaft is connected to the first take-up shaft (13). One end of the transmission belt (3) is fixedly wound around the first take-up shaft (13). The other end of the transmission belt (3) is movably passed through the through hole (201) and wrapped around the outer side of the mounting housing (2) once, and then passed back through the through hole (201) and fixedly wound around the second take-up shaft (14). An elastic reset assembly is installed on the second take-up shaft (14). The range sensor (5) is mounted on a mounting bracket (4) on the outer periphery of the transmission belt (3). The range sensor (5) is rotatably mounted on the mounting bracket (4). A first servo motor (6) for driving the range sensor (5) to rotate is mounted on the mounting bracket (4).

2. The anti-collision detection device for a gantry milling machine according to claim 1, characterized in that, First drive shafts (7) are rotatably mounted at the four corners of the outer side of the mounting housing (2). Two second drive shafts (8) are rotatably mounted on the mounting housing (2) near the perforation (201). The two second drive shafts (8) are located on both sides of the perforation (201). The two second drive shafts (8) and the four first drive shafts (7) are all located inside the transmission belt (3).

3. The anti-collision detection device for a gantry milling machine according to claim 2, characterized in that, Both the first drive shaft (7) and the second drive shaft (8) have annular grooves.

4. The anti-collision detection device for a gantry milling machine according to claim 1, characterized in that, The spacing between the four sides of the mounting housing (2) and the corresponding side of the transmission belt (3) is different.

5. The anti-collision detection device for a gantry milling machine according to claim 4, characterized in that, A positioning block (9) is provided on the mounting housing (2) near the perforation (201).

6. The anti-collision detection device for a gantry milling machine according to claim 1, characterized in that, The elastic reset assembly includes a cylinder (10) and a measuring tape spring (11). The cylinder (10) is fixed on the inner wall of the mounting housing (2). The end of the second winding shaft (14) is movably located inside the cylinder (10). The measuring tape spring (11) is installed inside the cylinder (10), and one end of the measuring tape spring (11) is connected to the second winding shaft (14).

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