Cross beam and gantry machining center using same

Abstract

The invention relates to the technical field of machine tool design, in particular to a cross beam and a gantry machining center using the cross beam, and the cross beam comprises a Y-axis main guide rail supporting box body, an X-axis left guide rail sliding block supporting box body, a Y-axis auxiliary guide rail supporting box body and an X-axis right guide rail sliding block supporting box body which are used for being connected to form a rectangular ring; wherein the Y-axis main guide rail supporting box body and the Y-axis auxiliary guide rail supporting box body are parallel to form a pair of length ends of a rectangular ring, and the X-axis left guide rail sliding block supporting box body and the X-axis right guide rail sliding block supporting box body are parallel to form a pair of width ends of the rectangular ring; the height and the width of the Y-axis auxiliary guide rail supporting box body are smaller than those of the Y-axis main guide rail supporting box body; the Y-axis main guide rail supporting box body, the X-axis left guide rail sliding block supporting box body, the Y-axis auxiliary guide rail supporting box body and the X-axis right guide rail sliding block supporting box body are each provided with a plurality of hollow weight reduction areas. The light weight and the deformation resistance of the cross beam can be considered.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool design, in particular to a crossbeam and a gantry machining center using the crossbeam. Background Art

[0002] With the development of mechanical equipment, mechanical automation equipment has been widely used in various fields, especially in the field of non-metallic processing, gantry machine tools have been widely used. A variety of processing equipment can be set on the crossbeam of the gantry machine tool to expand the scope of application of the gantry machine tool. As an important component of the gantry machine tool, the machine tool crossbeam carries the weight of key components such as the slide, ram, and spindle. The deformation of the crossbeam caused by its own gravity and external load will directly affect the overall performance of the machine tool, and then affect the geometric accuracy and surface processing quality of the workpiece. Therefore, in addition to being light in weight, high in rigidity, and small in deformation, the crossbeam must also have good dynamic characteristics.

[0003] Specifically, one type of beam is a wall-mounted rail beam, such as a gantry structure dicing machine with a right-angle Y-axis rail as disclosed in the announcement number CN211728725U. The center of gravity of the moving load falls on the outside of the Y-axis rail, which may generate a rollover torque. In order to balance this rollover torque, the large plane of the upper rail of the beam is subjected to additional tension, and the large plane of the lower rail is subjected to additional pressure, which makes the large planes of the upper and lower rails straight. The precision of the machine tool geometry is reduced. In order to solve this problem, the usual practice is to pre-deform the beam in the processing technology. The empirical value of pre-deformation is difficult to master, the manufacturing difficulty is high, the number of reworks is high, and the manufacturing cost is high. In addition, in order to ensure rigidity, the existing beam structure has a large weight per unit volume. As a moving component, it has poor dynamic performance and is suitable for strong cutting, but not for high-speed and efficient processing.

[0004] In summary, on the basis of taking into account the deformation resistance of the beam and the guide rail during use, the problem of lightweighting needs to be solved, and the existing beam structure needs to be further optimized. Summary of the invention

[0005] The first object of the present invention is to provide a crossbeam to solve the technical problem of achieving both lightness and deformation resistance.

[0006] The second object of the present invention is to provide a gantry machining center to solve the technical problem of enabling the crossbeam used therein to have both light weight and deformation resistance.

[0007] The crossbeam of the present invention is achieved in this way: A crossbeam, comprising: a Y-axis main rail support box, an X-axis left rail slider support box, a Y-axis auxiliary rail support box and an X-axis right rail slider support box, which are used to connect to form a rectangular ring; The Y-axis main guide support box is parallel to the Y-axis auxiliary guide support box to form a pair of length ends of a rectangular ring, and the X-axis left guide slider support box is parallel to the X-axis right guide slider support box to form a pair of width ends of a rectangular ring; and The height and width of the Y-axis auxiliary guide rail support box are both smaller than the Y-axis main guide rail support box; The Y-axis main guide support box, the X-axis left guide slider support box, the Y-axis auxiliary guide support box and the X-axis right guide slider support box are all provided with a plurality of hollow weight reduction areas.

[0008] In an optional implementation of the present invention, the bottom end surfaces of the Y-axis main guide support box, the X-axis left guide slider support box, the Y-axis auxiliary guide support box and the X-axis right guide slider support box are in the same horizontal plane.

[0009] In an optional implementation of the present invention, the X-axis left guide rail slider support box and the X-axis right guide rail slider support box are symmetrically arranged; and The top surfaces of the X-axis left guide rail slider support box and the X-axis right guide rail slider support box are both inclined surfaces inclined from the Y-axis main guide rail support box to the Y-axis auxiliary guide rail support box.

[0010] In an optional implementation of the present invention, an upper Y-axis main support rail extending along the length direction of the Y-axis main rail support box is provided on the top of the end surface of the Y-axis main rail support box facing the Y-axis auxiliary rail support box; and A lower Y-axis main support rail extending along the length direction of the Y-axis main rail support box is provided at the bottom of the end surface of the Y-axis main rail support box facing the Y-axis auxiliary rail support box.

[0011] In an optional implementation of the present invention, the end surface of the Y-axis main guide rail support box body facing away from the Y-axis auxiliary support guide rail is further provided with a Y-axis main guide rail reinforcement box body; and The Y-axis main guide rail reinforcement box is provided with a plurality of hollow weight-reducing areas.

[0012] In an optional implementation of the present invention, the area of ​​the end face where the Y-axis main rail reinforcement box is connected to the Y-axis main rail support box is larger than the area of ​​the end face where the Y-axis main rail reinforcement box is connected facing away from the Y-axis main rail support box, so that the Y-axis main rail reinforcement box has a quadrangular pyramid structure.

[0013] In an optional implementation of the present invention, a Y-axis auxiliary guide rail supporting box is provided on the top surface of the Y-axis auxiliary guide rail supporting box and extends along the length direction of the Y-axis auxiliary guide rail supporting box.

[0014] In an optional implementation of the present invention, the bottom end surfaces of the X-axis left guide rail slider support box and the X-axis right guide rail slider support box are respectively provided with X-axis support guide rail sliders.

[0015] In an optional implementation of the present invention, reinforcing ribs are provided in the hollow weight-reducing areas on the Y-axis main guide rail support box and the Y-axis auxiliary guide rail support box.

[0016] The gantry machining center of the present invention is realized in this way: A gantry machining center comprises: the above-mentioned crossbeam.

[0017] By adopting the above technical scheme, the present invention has the following beneficial effects: the crossbeam of the present invention and the gantry machining center using the crossbeam, through the cooperation of the Y-axis main guide support box, the X-axis left guide slider support box, the Y-axis auxiliary guide support box and the X-axis right guide slider support box, improve its deformation resistance while achieving lightweight of the crossbeam. Specifically, reducing the pressure on the side surfaces of the upper Y-axis main support guide rail and the lower Y-axis main support guide rail of the Y-axis main support guide box can significantly reduce the deformation of the reference planes of the upper Y-axis main support guide rail and the lower Y-axis main support guide rail of the Y-axis main support guide box of the crossbeam, and can also reduce the additional tension on the large plane of the upper Y-axis main support guide rail of the Y-axis main support guide box and the additional pressure on the large plane of the lower Y-axis main support guide, so as to resist the deformation of the Y-axis main support guide box caused by these two additional tensions and pressures, reduce the deformation of the large plane of the upper Y-axis main support guide rail and the lower Y-axis main support guide, so as to improve the straightness of the side and large plane of the Y-axis main support guide box, improve the Y-axis transmission accuracy of the crossbeam, and extend the service life of the upper Y-axis main support guide rail and the lower Y-axis main support guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure shows a schematic diagram of the structure of a wall-mounted beam generally used in the prior art; Figure 2 The figure is a schematic diagram of force analysis of a wall-mounted beam generally used in the prior art during use; Figure 3 The figure is a schematic diagram of the stress condition of the wall-mounted beam generally used in the prior art during use; Figure 4 Shown is a schematic structural diagram of the crossbeam of the present invention; Figure 5 The figure shows the partial structure of the crossbeam of the present invention. Figure 1 ; Figure 6 The figure shows the partial structure of the crossbeam of the present invention. Figure 2 ; Figure 7The figure shows a schematic diagram of force analysis during the use of the crossbeam of the present invention; Figure 8 The figure shows a schematic diagram of the stress condition of the crossbeam of the present invention during use.

[0019] In the figure: wall-mounted crossbeam 100, upper Y-axis guide rail 101, lower Y-axis guide rail 102, mobile load slide ram assembly 200, Y-axis main guide support box 1, upper Y-axis main support guide rail 11, lower Y-axis main support guide rail 12, X-axis left guide slider support box 2, X-axis right guide slider support box 3, Y-axis auxiliary guide rail support box 4, Y-axis auxiliary support guide rail 41, Y-axis main guide reinforcement box 5, X-axis support guide slider 6, Y-axis limit block 7, X-axis linear motor mover 8, Y-axis linear motor stator 9, hollow weight reduction area 10, X-shaped reinforcing rib plate 20. DETAILED DESCRIPTION

[0020] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0021] Embodiment 1: See also Figures 1 to 8 As shown, this embodiment provides a crossbeam, including: a Y-axis main guide support box 1, an X-axis left guide slider support box 2, a Y-axis auxiliary guide support box 4 and an X-axis right guide slider support box 3 for connecting to form a rectangular ring; the above four boxes can be optionally connected by welding to form an integral crossbeam.

[0022] The Y-axis main rail support box 1 and the Y-axis auxiliary rail support box 4 are parallel to form a pair of length ends of a rectangular ring, and the X-axis left rail slider support box 2 and the X-axis right rail slider support box 3 are parallel to form a pair of width ends of a rectangular ring. For the rectangular ring-shaped crossbeam here, a rectangular activity space is formed inside thereof to match the moving load slide ram assembly 200 of the gantry machining center. The slide ram assembly feeds in the Y direction along the length direction of the Y-axis main rail support box 1 and the Y-axis auxiliary rail support box 4 in the rectangular activity space.

[0023] On the basis of the above structure, the height and width of the Y-axis auxiliary guide rail support box 4 are both smaller than the Y-axis main guide rail support box 1. Here, optionally, the height of the Y-axis auxiliary guide rail support box 4 is about 1 / 3 of the height of the Y-axis main guide rail support box 1, and the width of the Y-axis auxiliary guide rail support box 4 is about 1 / 2 of the width of the Y-axis main guide rail support box 1. In this way, the weight of the Y-axis auxiliary guide rail support box 4 can be greatly reduced.

[0024] The X-axis left guide slider support box 2 and the X-axis right guide slider support box 3 are arranged symmetrically; and the top surfaces of the X-axis left guide slider support box 2 and the X-axis right guide slider support box 3 are both inclined surfaces inclined from the Y-axis main guide slider support box 1 to the Y-axis auxiliary guide slider support box 4. In this regard, in an optional implementation, the bottom surfaces of the Y-axis main guide slider support box 1, the X-axis left guide slider support box 2, the Y-axis auxiliary guide slider support box 4 and the X-axis right guide slider support box 3 are in the same horizontal plane. This overall structure formed by one end high and the other end low can not only ensure the overall rigidity of the beam, reduce the deformation of the beam after the load is added, but also greatly reduce the overall weight of the beam. Based on this structure, the overall beam is a main and auxiliary step structure with a low front and a high back. Specifically, the front is the Y-axis auxiliary guide slider support box 4, the back is the Y-axis main guide slider support box 1, and the X-axis left guide slider support box 2 and the X-axis right guide slider support box 3 are step structures with a low front and a high back.

[0025] Based on the above situation, in order to achieve lightweight of the entire crossbeam, multiple hollow weight reduction areas 10 are provided on the Y-axis main guide support box 1, the X-axis left guide slider support box 2, the Y-axis auxiliary guide support box 4 and the X-axis right guide slider support box 3.

[0026] In addition, it should be noted that in order to make the crossbeam of this embodiment meet the use requirements of the mobile load slide ram assembly 200, the Y-direction feed transmission of the mobile load slide ram assembly 200 on the crossbeam adopts a linear motor direct drive structure, and for this, an upper Y-axis main support guide rail 11 extending along the length direction of the Y-axis main guide rail support box 1 is provided on the top of the end surface of the Y-axis main rail support box 1 facing the Y-axis auxiliary guide rail support box 4; and a lower Y-axis main support guide rail 12 extending along the length direction of the Y-axis main rail support box 1 is provided on the bottom of the end surface of the Y-axis main rail support box 1 facing the Y-axis auxiliary guide rail support box 4. A Y-direction linear motor stator 9 is also provided on the Y-axis main rail support box 1, and the Y-direction linear motor mover is installed on the mobile load slide ram assembly 200.

[0027] Furthermore, the crossbeam and the movable load slide ram assembly 200 as a movable load adopts a linear motor direct drive structure for the X-direction feed transmission on the machine tool bed. For this, the X-axis left guide slider support box 2 and the X-axis right guide slider support box 3 are respectively provided with an X-direction linear motor mover 8, and the X-direction linear motor stator is installed on the machine tool bed. Under this structure, the X-axis and Y-axis of the machine tool are fed and driven by the linear motor direct drive structure. For the specific driving principle and structure of the linear motor, any mature means in the prior art can be selected, and this example does not make an absolute limitation on this. Here, it is considered to limit the extreme position of the movable load slide ram assembly 200 when it is transmitted along the Y-axis main guide slider support box 1, and a pair of Y-direction limit blocks 7 are also provided on the Y-axis main guide slider support box 1.

[0028] Based on the above situation, it is necessary to explain that most of the gravity of the Y-axis load is borne by the Y-axis main rail support box 1, and the Y-axis linear motor stator 9 is also installed on the Y-axis main rail support box 1. Therefore, the Y-axis main rail support box 1 uses the most materials and has the greatest structural strength. For this reason, reinforcing ribs are provided in the hollow weight-reducing area 10 of the Y-axis main rail support box 1. The reinforcing ribs here are, for example, but not limited to, X-shaped reinforcing rib plates 20. The Y-axis main rail support box 1 is designed with a large area of ​​hollow weight-reducing area 10 corresponding to the installation surface of the Y-axis linear motor stator 9, and an X-shaped reinforcing rib plate 20 is set in the hollow weight-reducing area 10 to strengthen the rigidity. The design of the hollow weight-reducing area 10 here has two functions: 1. It is convenient for the Y-axis linear motor stator 9 to dissipate heat and improve the precision and stability of the machine tool. 2. Reduce weight; the other three sides of the Y-axis main rail support box 1 are also designed with large areas of hollow weight-reducing area 10, and X-shaped reinforcing rib plates 20 are set in the hollow weight-reducing area 10 to strengthen the rigidity.

[0029] A small part of the gravity of the Y-axis load is borne by the Y-axis auxiliary guide rail support box 4. The auxiliary support force provided by this box also plays a role in resisting the overturning moment. Since it only plays the role of auxiliary support, the height and width of the Y-axis auxiliary guide rail support box 4 are designed to be smaller than the Y-axis main guide rail support box 1. The top surface of the Y-axis auxiliary guide rail support box 4 is the installation surface of the guide rail, so the strength of the material used on this surface is relatively large. The front and rear surfaces of the Y-axis auxiliary guide rail support box 4 are designed with large-area hollow weight reduction areas 10. X-shaped reinforcing ribs 20 are set in the large-area hollow weight reduction area 10 to enhance rigidity, thereby further reducing weight.

[0030] The Y-axis load and the weight of the beam itself are borne by the X-axis left guide slider support box 2 and the X-axis right guide slider support box 3, and these two boxes are also the installation carriers of the X-axis linear motor mover 8. The outer side of the X-axis left guide slider support box 2 is to be installed with the left mover of the X-axis linear motor, and the outer side of the X-axis right guide slider support box 3 is to be installed with the right mover of the X-axis linear motor. Therefore, these two boxes are also designed to be strong, and these two boxes have another function: to connect the Y-axis main guide slider support box 1 and the Y-axis auxiliary guide slider support box 4 into a rigid whole.

[0031] In order to reduce the overall weight of the beam, the beam of this embodiment can optionally adopt a Q355B high-strength alloy steel welding structure, and open a large number of deweighting holes on the welding plate. A large area of ​​hollow areas is designed at non-critical parts of the beam. The average wall thickness of the welded sheet is 13mm, and the wall thickness of the guide rail and guide rail slider mounting surface and the linear motor rotor mounting surface will be thickened to about 30mm. The weight of the beam can be greatly reduced by adopting this solution.

[0032] The top surface of the Y-axis auxiliary guide rail support box 4 is provided with a Y-axis auxiliary support rail 41 extending along the length direction of the Y-axis auxiliary guide rail support box 4. The bottom surfaces of the X-axis left guide rail slider support box 2 and the X-axis right guide rail slider support box 3 are respectively provided with X-axis support guide rail sliders 6.

[0033] Next, Figure 1 The stress conditions of the wall-mounted beam 100 generally used in the prior art shown in the figure during use are analyzed: like Figure 3 As shown, the entire movable load slide ram assembly 200 is taken as the research object, and the force analysis of the system is performed with the lower Y-axis guide rail 102 as the rotation center. In order to balance the gravity G1 of the movable load, the upper Y-axis guide rail 101 of the wall-mounted crossbeam 100 provides an upward support force F1 to the slide, and the lower Y-axis guide rail 102 of the wall-mounted crossbeam 100 provides an upward support force F2 to the slide; the center of gravity of the movable load falls on the outer side of the upper Y-axis guide rail 101 and the lower Y-axis guide rail 102, which will generate a clockwise turning torque. In order to balance this turning torque, the upper Y-axis guide rail 101 provides a pulling force F3 to the left of the slide, and the lower Y-axis guide rail 102 provides a support force F4 to the right of the slide. The force analysis equation is as follows: F3-F4=0 (horizontal direction); F1+F2-G1=0 (vertical direction); F3XL2-G1XL1=0(rotation direction); In summary, F1+F2=G1; F3XL2=G1XL1 Through the above force analysis, according to Newton's third law, Figure 2 As shown, taking the wall-mounted beam 100 generally used in the prior art as the research object, the stress conditions of the beam are as follows: The upper Y-axis guide rail 101 of the crossbeam is subjected to a downward force F1', and the upper Y-axis guide rail 101 of the crossbeam is subjected to a rightward force F3' (tension); the lower Y-axis guide rail 102 of the crossbeam is subjected to a downward force F2', and the lower Y-axis guide rail 102 of the crossbeam is subjected to a leftward force F4' (pressure). That is to say, the side reference surface of the upper Y-axis guide rail 101 of the crossbeam is subjected to the downward force F1', which will cause the side support surface of the upper Y-axis guide rail 101 of the crossbeam to be concave and deformed, and the actual measured results of this deformation can reach 0.065mm. The large plane of the upper Y-axis guide rail 101 of the crossbeam is subjected to the rightward pulling force F3', which will cause the upper Y-axis guide rail 101 of the crossbeam to be convex and deformed, and the actual measured results of this deformation can reach 0.065mm; the side reference surface of the lower Y-axis guide rail 102 of the crossbeam is subjected to the downward force F2', which will cause the side support surface of the lower Y-axis guide rail 102 of the crossbeam to be concave and deformed, and the actual measured results of this deformation can reach 0.065mm. The large plane of the lower Y-axis guide rail 102 of the crossbeam is subjected to the leftward pressure F4', which will cause the large plane of the lower Y-axis guide rail 102 of the crossbeam to be concave and deformed, and the actual measured results of this deformation can reach 0.065mm. These deformations of the upper Y-axis guide rail 101 of the crossbeam and the upper Y-axis guide rail 101 of the lower crossbeam will cause the side reference of the guide rail of the crossbeam and the guide rail straightness of the large plane of the guide rail to deteriorate, thereby reducing the geometric accuracy of the Y-axis of the machine tool.

[0034] like Figure 8 As shown, the force analysis of the beam in this embodiment is as follows: The entire movable load slide ram assembly 200 is taken as the research object, and the force analysis of the system is performed with the lower Y-axis main support guide rail 12 of the Y-axis main guide rail support box 1 as the rotation center. In order to balance the gravity G1 of the moving load, the upper Y-axis main support rail 11 of the Y-axis main rail support box 1 provides an upward support force F1 to the slide, the lower Y-axis main support rail 12 of the Y-axis main rail support box 1 provides an upward support force F2 to the slide, and the Y-axis auxiliary guide rail support box 4 provides an upward support force F5 to the slide; the center of gravity of the moving load falls between the upper Y-axis main support rail 11 of the Y-axis main rail support box 1 and the Y-axis auxiliary support rail 41 of the Y-axis auxiliary guide rail support box 4, which will produce a clockwise flipping torque. In order to balance this flipping torque, the upper Y-axis main support rail 11 of the Y-axis main rail support box 1 provides a leftward pulling force F3 to the slide, the lower Y-axis main support rail 12 of the Y-axis main rail support box 1 provides a rightward support force F4 to the slide, and the Y-axis auxiliary support rail 41 of the Y-axis auxiliary guide rail support box 4 provides an upward support force F5 to the slide. The force analysis equation is as follows: F3-F4=0 (horizontal direction); F1+F2+F5-G1=0 (vertical direction); F3XL2+F5XL3-G1XL1=0(rotation direction) In summary, F1+F2=G1-F5 (1); F3XL2=G1XL1- F5XL3 (2) It can be seen from the above formula (1) that, compared with the crossbeam in the prior art, the present embodiment adds an upward supporting force F5 provided by the Y-axis auxiliary support rail 41 of the Y-axis auxiliary guide rail support box 4, so the upward supporting forces F1 and F2 provided by the upper Y-axis main support rail 11 and the lower Y-axis main support rail 12 of the Y-axis main guide rail support box 1 will be greatly reduced. The actual F1 and F2 in this case are reduced by 50%.

[0035] According to the above formula (2), it can be seen that compared with the beam in the prior art, due to the increase of the upward support force F5 provided by the Y-axis auxiliary guide rail support box 4, and L3>L2, the leftward pulling force F3 provided by the upper Y-axis main support rail 11 and the lower Y-axis main support rail 12 of the Y-axis main guide rail support box 1 will be greatly reduced. The actual F3 of this case is reduced by 85%.

[0036] F3-F4=0(3); According to the above formula (3), F3=F4, so the rightward supporting force F4 provided by the lower Y-axis main supporting guide rail 12 of the Y-axis main guide rail supporting box 1 is greatly reduced at the same time as F3. In this case, the actual F4 is reduced by 85%.

[0037] Through the above force analysis, according to Newton's third law (action force and reaction force are equal), if Figure 7 As shown, the Y-axis main rail support box 1 and the Y-axis auxiliary rail support box 4 of the beam are taken as the research objects, and their force conditions are as follows: The upper Y-axis main support rail 11 of the Y-axis main rail support box 1 is subjected to a downward force F1', and the upper Y-axis main support rail 11 of the Y-axis main rail support box 1 is subjected to a rightward force F3' (tension); the lower Y-axis main support rail 12 of the Y-axis main rail support box 1 is subjected to a downward force F2', and the lower Y-axis main support rail 12 of the Y-axis main rail support box 1 is subjected to a leftward force F4' (pressure), and the Y-axis auxiliary support rail 41 of the Y-axis auxiliary rail support box 4 is subjected to a downward force F5'. Compared with the wall-mounted beam 100 in the prior art, F1', F2', F3' (tension), and F4' (pressure) are greatly reduced. In the actual object of this case, F1' and F2' are reduced by 50%, and F3' (tension) and F4' (pressure) are reduced by 85%. Because F1' is reduced by 50%, the concave deformation of the side support surface of the upper Y-axis main support guide rail 11 of the Y-axis main guide support box 1 will be greatly reduced. In this case, the actual deformation is reduced by 50%, and the measured deformation value is 0.028mm. Because F3' (tension) is reduced by 85%, the large plane convex deformation of the upper Y-axis main support guide rail 11 of the Y-axis main guide support box 1 will be greatly reduced. In this case, the actual deformation is reduced by 85%, and the measured deformation value is 0.010mm. Because F2' is reduced by 50%, the concave deformation of the side support surface of the lower Y-axis main support guide rail 12 of the Y-axis main guide support box 1 is greatly reduced. In this case, the actual deformation is reduced by 50%, and the measured deformation value is 0.028mm. Because F4' (pressure) is reduced by 85%, the large plane concave deformation of the lower Y-axis main support guide rail 12 of the Y-axis main guide support box 1 is greatly reduced. In this case, the actual deformation is reduced by 85%, and the measured deformation value is 0.010mm.

[0038] like Figure 5 As shown, in order to further reduce the convex deformation of the large plane of the upper Y-axis main support guide 11 of the Y-axis main guide support box 1 and the concave deformation of the large plane of the lower Y-axis main support guide 12 of the Y-axis main guide support box 1 caused by the rightward force F3' (tensile force) on the upper Y-axis main support guide 11 of the Y-axis main guide support box 1 and the leftward force F4' (pressure) on the lower Y-axis main support guide 12 of the Y-axis main guide support box 1, the Y-axis main guide support box 1 is designed with a convex structure facing away from the Y-axis auxiliary guide support box 4. It has been measured that the addition of this structure can reduce the large plane convex deformation of the upper Y-axis main support guide 11 of the Y-axis main guide support box 1 and the concave deformation of the lower Y-axis main support guide 12 of the Y-axis main guide support box 1 by about 40%.

[0039] The use of an extremely lightweight beam that can resist the turning moment structure can reduce the weight by 2 / 3 compared to the wall-mounted beam 100, and at the same time, the straightness of the Y-axis guide rail of the machine tool can meet the requirements of the certificate at one time, ensuring that the geometric accuracy of the Y-axis of the machine tool can pass the inspection at one time. There is no need for rework and other pre-deformation and other process treatment measures, which reduces the difficulty of manufacturing and reduces the manufacturing cost.

[0040] In summary, this embodiment improves the deformation resistance of the crossbeam while achieving lightweight through the coordination of the Y-axis main guide support box 1, the X-axis left guide slider support box 2, the Y-axis auxiliary guide support box 4 and the X-axis right guide slider support box 3.

[0041] Embodiment 2: Based on the beam of Example 1, the end surface of the Y-axis main rail support box 1 of the beam provided in this embodiment that faces away from the Y-axis auxiliary support rail 41 is also provided with a Y-axis main rail reinforcement box 5; and a plurality of hollow weight reduction areas 10 are provided on the Y-axis main rail reinforcement box.

[0042] More specifically, in conjunction with the accompanying drawings, an optional implementation is given as an example, the area of ​​the end face where the Y-axis main guide rail reinforcement box 5 is connected to the Y-axis main guide rail support box 1 is larger than the area of ​​the end face where the Y-axis main guide rail reinforcement box 5 is connected to the Y-axis main guide rail support box 1 away from the Y-axis main guide rail support box 1, so that the Y-axis main guide rail reinforcement box 5 has a quadrangular pyramid structure. This structure can effectively reduce the deformation of the Y-axis main guide rail support box 1 caused by the Y-axis load. In order to further reduce weight, evenly distributed weight-reducing circular holes are opened on the three edges of the quadrangular pyramid structure, and the fourth edge and top surface of the quadrangular pyramid structure are designed as a large-area hollow structure, and an X-shaped reinforcing rib plate 20 is set at the hollow part to enhance rigidity.

[0043] Embodiment 3: Based on the crossbeam of Example 1 or Example 2, this embodiment provides a gantry machining center, including: the crossbeam of Example 1 or Example 2.

[0044] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0045] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A beam, characterized in that: include: A Y-axis main guide support box, an X-axis left guide slider support box, a Y-axis auxiliary guide support box and an X-axis right guide slider support box are used to connect to form a rectangular ring; The Y-axis main guide support box is parallel to the Y-axis auxiliary guide support box to form a pair of length ends of a rectangular ring, and the X-axis left guide slider support box is parallel to the X-axis right guide slider support box to form a pair of width ends of a rectangular ring; and The height and width of the Y-axis auxiliary guide rail support box are both smaller than the Y-axis main guide rail support box; The Y-axis main guide support box, the X-axis left guide slider support box, the Y-axis auxiliary guide support box and the X-axis right guide slider support box are all provided with a plurality of hollow weight reduction areas.

2. The crossbeam according to claim 1, characterized in that The bottom end surfaces of the Y-axis main guide support box, the X-axis left guide slider support box, the Y-axis auxiliary guide support box and the X-axis right guide slider support box are in the same horizontal plane.

3. The crossbeam according to claim 1 or 2, characterized in that: The X-axis left guide rail slider support box and the X-axis right guide rail slider support box are symmetrically arranged; and The top surfaces of the X-axis left guide rail slider support box and the X-axis right guide rail slider support box are both inclined surfaces inclined from the Y-axis main guide rail support box to the Y-axis auxiliary guide rail support box.

4. The crossbeam according to claim 1, characterized in that: An upper Y-axis main support rail extending along the length direction of the Y-axis main rail support box is provided on the top of the end surface of the Y-axis main rail support box facing the Y-axis auxiliary rail support box; and A lower Y-axis main support rail extending along the length direction of the Y-axis main rail support box is provided at the bottom of the end surface of the Y-axis main rail support box facing the Y-axis auxiliary rail support box.

5. The crossbeam according to claim 1 or 4, characterized in that: The end surface of the Y-axis main rail support box body facing away from the Y-axis auxiliary support rail is also provided with a Y-axis main rail reinforcement box body; and The Y-axis main guide rail reinforcement box is provided with a plurality of hollow weight-reducing areas.

6. The crossbeam according to claim 5, characterized in that The area of ​​the end surface of the Y-axis main rail reinforcement box connected to the Y-axis main rail support box is larger than the area of ​​the end surface of the Y-axis main rail reinforcement box facing away from the Y-axis main rail support box, so that the Y-axis main rail reinforcement box has a quadrangular pyramid structure.

7. The crossbeam according to claim 1 or 4, characterized in that: A Y-axis auxiliary support guide rail extending along the length direction of the Y-axis auxiliary guide rail support box is provided on the top end surface of the Y-axis auxiliary guide rail support box.

8. The crossbeam according to claim 1, characterized in that The bottom end surfaces of the X-axis left guide rail slider support box and the X-axis right guide rail slider support box are respectively provided with X-axis support guide rail sliders.

9. The crossbeam according to claim 1, characterized in that: Reinforcing ribs are provided in the hollow weight-reducing areas on the Y-axis main guide rail support box and the Y-axis auxiliary guide rail support box.

10. A gantry machining center, characterized in that: include: A crossbeam as described in any one of claims 1 to 9 is used.

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