High-precision crossbeam for gantry machining center

Abstract

This invention relates to a crossbeam for a high-precision gantry machining center, belonging to the field of machine tool component technology. It provides guidance for the lateral movement of the machining center's lateral movement system. The high-precision gantry machining center crossbeam includes a crossbeam body, several sliding rails, several sliding rail detection systems, and an air supply system. The sliding rails are mounted parallel to each other on the crossbeam body. The lateral movement system is slidably mounted on the sliding rails. The sliding rail detection system includes a detection slider, a detection spring, an inertial detection device, and a pneumatic avoidance device. The detection slider attracts the lateral movement system and is slidably mounted on the sliding rails. An air outlet is provided on the side of the detection slider closest to the lateral movement system. The detection spring is oscillatingly mounted on the detection slider. The pneumatic avoidance device is mounted on the detection slider, and the inertial detection device is mounted on the detection spring. The pneumatic avoidance device pushes the detection spring to deflect, causing the inertial detection device to move closer to the corresponding sliding rail for easy maintenance.

Description

Technical Field

[0001] This invention relates to the field of machine tool component technology, and in particular to a crossbeam for a high-precision gantry machining center. Background Technology

[0002] The crossbeams of high-precision gantry machining centers often face multiple problems during use. First, deflection deformation caused by their own weight and component loads can easily occur in the middle of large-span crossbeams, disrupting the straightness of the Y-axis. Second, if the residual stress from casting and machining is not adequately aged, the crossbeam will slowly deform during its service life, leading to a continuous decline in geometric accuracy. Third, uneven wear exists in the guide rail system, especially the tilting caused by asynchronous left and right lifting in the moving beam structure, which exacerbates wear and creates backlash. At the same time, thermal deformation has a significant impact; environmental temperature differences or the accumulation of heat during continuous machining cause inconsistent expansion between the guide rails and the crossbeam, which can result in positioning errors accounting for 40% to 70% of the total machining error.

[0003] In summary, beam deformation will lead to slide rail deformation, and the beam error will ultimately be reflected in the guide rail, thus affecting accuracy. Therefore, accurately testing the flatness of the slide rail becomes the key to controlling accuracy. Being able to conveniently test the accuracy of the guide rail at any time is a prerequisite for ensuring accuracy. Real-time understanding of the beam's condition can also greatly reduce maintenance costs. Existing equipment lacks the ability to test at any time. Summary of the Invention

[0004] To overcome the technical defects of existing technologies, this invention provides a crossbeam for a high-precision gantry machining center, which is easy to maintain.

[0005] The technical solution adopted in this invention is: A crossbeam for a high-precision gantry machining center supports the traverse system of the machining center and provides guidance for the traverse movement of the traverse system. The crossbeam includes a crossbeam body, several sliding rails, several sliding rail detection systems, and an air supply system. The sliding rails are mounted parallel to each other on the crossbeam body. The traverse system is slidably mounted on the sliding rails. The sliding rail detection system includes a detection slider, a detection spring, an inertial detection device, and a pneumatic avoidance device. The detection slider attracts the traverse system and is slidably mounted on the sliding rail. An air outlet is provided on the side of the detection slider near the traverse system, and the air outlet is connected to the air supply system. The detection spring is oscillatingly mounted on the detection slider. The pneumatic avoidance device is mounted on the detection slider, and the inertial detection device is mounted on the detection spring. The pneumatic avoidance device pushes the detection spring to deflect, causing the inertial detection device to move closer to the corresponding sliding rail.

[0006] Specifically, the sliding rail is provided with several airflow guiding grooves, the detection slider is provided with several inclined pneumatic nozzles, the airflow direction of each pneumatic nozzle is deflected towards the transverse movement system, and the depth of the airflow guiding groove is between one millimeter and two millimeters.

[0007] Specifically, the depth of the jet nozzle is greater than 5 centimeters, and the lateral movement system is provided with an acceleration column adapted to the jet nozzle, the acceleration column slidingly engaging with the jet nozzle.

[0008] Specifically, a permanent magnet is provided between the detection slider and the transverse system to attract each other.

[0009] Specifically, the detection spring is hinged to the side of the detection slider by a pin, and a torsion spring is provided between the detection spring and the detection slider. The torsion spring causes the detection spring to deflect, and the direction of the deflection of the detection spring caused by the torsion spring causes the inertial detection device to move away from the slide rail.

[0010] Specifically, the inertial detection device includes a probe and an acceleration sensor. The probe is slidably mounted on a detection spring. A return spring is provided between the probe and the detection spring, and the return spring presses the probe toward the sliding rail. The acceleration sensor is mounted on the probe.

[0011] Specifically, the inertial detection device points to the upper and lower sides of the sliding rail.

[0012] Specifically, the pneumatic avoidance device includes a push cylinder that presses against a detection spring. When the push cylinder pushes the detection spring, it causes the inertial detection device to approach the corresponding sliding rail.

[0013] The beneficial effects of this invention are: The crossbeam of this high-precision gantry machining center includes a crossbeam body, several sliding rails, several sliding rail detection systems, and an air supply system. Each sliding rail is installed parallel to the other on the crossbeam body, and the transverse movement system is slidably installed on the sliding rails, thereby supporting the transverse movement of the machining center.

[0014] The slide rail detection system includes a detection slider, a detection spring, an inertial detection device, and a pneumatic avoidance device. The detection slider attracts the traverse system and is slidably mounted on the slide rail. An air nozzle is located on the side of the detection slider closest to the traverse system, and this nozzle is connected to an air supply system. The air supply system includes an air pump and a hose. The air pump is connected to a pre-set air nozzle on the detection slider via the hose, and the air is ultimately ejected from the air nozzle. The detection spring is oscillatingly mounted on the detection slider via a pin located on the side of the detection spring closest to the pneumatic avoidance device. The pneumatic avoidance device is mounted on the detection slider, and the inertial detection device is mounted on the detection spring. The pneumatic avoidance device pushes the detection spring... During testing, the pneumatic avoidance device pushes the detection spring to deflect, causing the inertial detection device to approach the corresponding sliding rail. When not testing, due to the weight of the inertial detection device and the detection spring, after the pneumatic avoidance device stops supplying air, the detection spring swings under gravity, causing the inertial detection device to detach from the sliding rail. It only approaches the corresponding sliding rail during testing, serving a protective function. When the air jet is in operation, the detection slider accelerates rapidly under the push of the airflow. If the sliding rail is uneven, the inertial detection device will be impacted when it encounters uneven areas due to the speed of the detection slider, thereby amplifying the detection sensitivity and quickly sensing problems on the sliding rail, facilitating maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the structure for detecting when the slider disengages from the transverse system.

[0018] Figure 4 This is a schematic diagram of the structure used to detect the adsorption between the slider and the transverse system.

[0019] Figure 5 This is a schematic diagram of the slide rail detection system.

[0020] Figure 6 for Figure 5 Enlarged diagram of point B in the middle.

[0021] Explanation of reference numerals in the attached figures: 1. The main body of the crossbeam; 2. Sliding rail; 21. Airflow guide groove; 3. Slide rail detection system; 31. Detection slider; 311. Pneumatic nozzle; 312. Air jet; 313. Air nozzle; 32. Detection spring; 33. Inertial detection device; 331. Probe; 34. Pneumatic avoidance device; 4. Lateral movement system; 41. Acceleration column. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 — Figure 6 As shown, this embodiment provides a crossbeam for a high-precision gantry machining center, which supports the transverse movement system 4 of the machining center and provides guidance for the transverse movement of the transverse movement system 4. The crossbeam for the high-precision gantry machining center includes a crossbeam body 1, several sliding rails 2, several sliding rail detection systems 3 and an air supply system. Each sliding rail 2 is installed parallel to each other on the crossbeam body 1, and the transverse movement system 4 is slidably installed on the sliding rails 2, thereby supporting the transverse movement of the machining center's transverse movement system 4.

[0023] The slide rail detection system 3 includes a detection slider 31, a detection spring 32, an inertial detection device 33, and a pneumatic avoidance device 34. The detection slider 31 attracts the transverse system 4 and is slidably mounted on the slide rail 2. A jet nozzle 312 is located on the side of the detection slider 31 closest to the transverse system 4. The jet nozzle 312 is connected to an air supply system, which includes an air pump and a hose. The air pump is connected to a pre-set air nozzle 313 on the detection slider 31 via the hose, and the air is finally ejected from the jet nozzle 312. The detection spring 32 is oscillatingly mounted on the detection slider 31 via a pin, with the pin located on the side of the detection spring 32 closest to the pneumatic avoidance device 34. The pneumatic avoidance device 34 is mounted on the detection slider 31, and the inertial detection device 33 is mounted on the detection spring 32. The pneumatic avoidance device 34 pushes the detection spring 32 to deflect. During testing, the pneumatic avoidance device 34 pushes the detection spring 32 to deflect, causing the inertial detection device 33 to approach the corresponding sliding rail 2. When not testing, due to the weight of the inertial detection device 33 and the detection spring 32, after the pneumatic avoidance device 34 stops supplying air, the detection spring 32 swings under the action of gravity, causing the inertial detection device 33 to detach from the sliding rail 2. It only approaches the corresponding sliding rail 2 during testing, playing a protective role. When the jet nozzle 312 sprays air, the detection slider 31 accelerates rapidly under the push of the airflow. If the sliding rail 2 is not flat, due to the speed of the detection slider 31, the inertial detection device 33 will be impacted when it encounters the uneven area, thereby amplifying the detection sensitivity and quickly sensing the problem on the sliding rail 2.

[0024] Specifically, the sliding rail 2 is provided with an airflow guide groove 21, and the detection slider 31 is provided with several inclined pneumatic nozzles 311. The jet direction of each pneumatic nozzle 311 is deflected towards the transverse system 4. The depth of the airflow guide groove 21 is between one millimeter and two millimeters, so that the airflow of the pneumatic nozzle 311 can be smoothly ejected. Since the pneumatic nozzle 311 has a component pointing in the direction of the transverse system 4, the gas ejected by the pneumatic nozzle 311 has the effect of accelerating the detection slider 31.

[0025] Specifically, the depth of the jet nozzle 312 is greater than 5 cm. The transverse system 4 is equipped with an acceleration column 41 adapted to the jet nozzle 312. The acceleration column 41 slides with the jet nozzle 312 to provide acceleration stroke. Due to the cooperation between the acceleration column 41 and the jet nozzle 312, the detection slider 31 has an initial velocity. The continuous jet of the jet nozzle 312 generates thrust. Since the detection slider 31 has established an initial velocity, the jet nozzle 312 with thrust does work quickly on the detection slider 31 with velocity, thereby maintaining the velocity of the detection slider 31.

[0026] Specifically, a permanent magnet is provided between the detection slider 31 and the transverse system 4 to attract each other, so that the detection slider 31 normally follows the transverse system 4. When the jet nozzle 312 sprays air, a preset pressure is provided to increase the jet pressure of the jet nozzle 312 and ensure the acceleration of the detection slider 31 before it leaves the acceleration column 41.

[0027] Specifically, the detection spring 32 is hinged to the side of the detection slider 31 by a pin. A torsion spring is provided between the detection spring 32 and the detection slider 31. The torsion spring causes the detection spring 32 to deflect. The torsion spring drives the deflection direction of the detection spring 32 to move the inertial detection device 33 away from the slide rail 2. When not detecting, the inertial detection device 33 is lifted, thereby protecting the inertial detection device 33. The function of the torsion spring is to overcome the friction force that the pin may generate when rotating due to poor lubrication.

[0028] Specifically, the inertial detection device 33 includes a probe 331 and an acceleration sensor. The probe 331 is slidably mounted on the detection spring 32. A return spring is provided between the probe 331 and the detection spring 32. The return spring presses the probe 331 toward the sliding rail 2. The acceleration sensor is mounted on the probe 331 to sense the acceleration of the probe 331, thereby sensing the unevenness or deformation of the sliding rail 2, and thus providing early warning.

[0029] Specifically, the inertial detection device 33 points to the upper and lower sides of the sliding rail 2 to detect the position where the force is most concentrated.

[0030] Specifically, the pneumatic avoidance device 34 includes a push cylinder with a pneumatic piston rod that is slidably mounted on the detection slider 31. The sliding channel of the piston rod is connected to the air nozzle 313. During air-passage detection, the piston rod extends and presses down on the detection spring 32, causing the detection spring 32 to deflect. The push cylinder presses down on the detection spring 32. When the push cylinder pushes the detection spring 32, it causes the inertial detection device 33 to approach the corresponding sliding rail 2, thereby achieving detection.

[0031] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A crossbeam for a high-precision gantry machining center, used to support the transverse movement system of the machining center and to guide the transverse movement of the machining center's transverse movement system, characterized in that... The high-precision gantry machining center's crossbeam includes a crossbeam body, several sliding rails, several sliding rail detection systems, and an air supply system. Each sliding rail is mounted parallel to the other on the crossbeam body. The transverse movement system is slidably mounted on the sliding rails. The sliding rail detection system includes a detection slider, a detection spring, an inertial detection device, and a pneumatic avoidance device. The detection slider attracts the transverse movement system and is slidably mounted on the sliding rail. An air outlet is located on the side of the detection slider closest to the transverse movement system and is connected to the air supply system. The detection spring is oscillatingly mounted on the detection slider. The pneumatic avoidance device is mounted on the detection slider, and the inertial detection device is mounted on the detection spring. The pneumatic avoidance device pushes the detection spring to deflect, causing the inertial detection device to move closer to the corresponding sliding rail.

2. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The sliding rail is provided with several airflow guide grooves, and the detection slider is provided with several inclined pneumatic nozzles. The airflow direction of each pneumatic nozzle is deflected towards the transverse movement system, and the depth of the airflow guide groove is between one millimeter and two millimeters.

3. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The depth of the jet nozzle is greater than 5 cm, and the lateral movement system is provided with an acceleration column adapted to the jet nozzle, the acceleration column slidingly engaging with the jet nozzle.

4. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The detection slider and the transverse system are provided with permanent magnets that attract each other.

5. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The detection spring is hinged to the side of the detection slider by a pin. A torsion spring is provided between the detection spring and the detection slider. The torsion spring causes the detection spring to deflect. The direction of the deflection of the detection spring caused by the torsion spring makes the inertial detection device move away from the sliding rail.

6. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The inertial detection device includes a probe and an acceleration sensor. The probe is slidably mounted on a detection spring. A return spring is provided between the probe and the detection spring, and the return spring presses the probe toward the sliding rail. The acceleration sensor is mounted on the probe.

7. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The inertial detection device points to the upper and lower sides of the sliding rail.

8. The crossbeam for a high-precision gantry machining center according to claim 1, characterized in that, The pneumatic avoidance device includes a push cylinder that presses against a detection spring. When the push cylinder pushes the detection spring, it causes the inertial detection device to move closer to the corresponding sliding rail.

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