Cross beam device

Abstract

The invention relates to the technical field of machine tool parts, in particular to a cross beam device which comprises a cross beam body, a cross beam stand column is fixedly arranged at the lower end of the cross beam body, a cross beam deflection correction mechanism is arranged in the cross beam body and comprises suspension beams, suspension beam stand columns, pull rods and adjusting nuts, and the suspension beams are arranged on the two sides in the cross beam body in the length direction of the cross beam body. The cantilever is made of flexible materials, cantilever stand columns are arranged at the two ends of the cantilever respectively, the lower ends of the cantilever stand columns are fixedly connected with a bottom plate of the cross beam body, a pull rod is arranged between the cantilever and the bottom plate of the cross beam body, the lower end of the pull rod is fixedly connected with the bottom plate of the cross beam body, and the upper end of the pull rod penetrates out of the cantilever and is provided with an adjusting nut. The beam body comprises a top plate, a bottom plate and side plates. The beam is simple in structure, few in component and free of occupying the upper space of the beam, deflection deformation of different positions of the beam can be corrected respectively, correction precision is high, and correction is rapid and convenient.

Description

Technical Field

[0001] This invention relates to the field of machine tool component technology, specifically to a crossbeam device. Background Technology

[0002] Currently, mechanical crossbeams are widely used in the machine tool manufacturing industry. They are crucial components that directly determine the accuracy of machine tools. Because of their relatively long length, the crossbeams are supported by columns on both sides at their lower ends. However, the portion of the crossbeam between the two ends of the columns sags downwards due to its own weight, and this sag increases with the length of the crossbeam. The resulting error is several times, even ten times, the machining error of the crossbeam. This error is caused by gravity and is unavoidable. A search reveals that Chinese patent CN118219045A discloses a crossbeam deflection compensation mechanism, which includes: a gantry crossbeam, and two columns at the lower end of the gantry crossbeam... Each side is equipped with columns, and both sides of the gantry beam have clearance grooves. Each column on one side of the gantry beam has a compensating power mechanism, which includes a hydraulic telescopic cylinder and a steel wire rope. Support assemblies are located on both sides of the upper end of the gantry beam. Each support assembly includes a first support and a second support. Two first supports and two second supports are symmetrically arranged on both sides and the center of the gantry beam, respectively, with the steel wire rope overlapping the first and second supports. A safety assembly is located within the first and second supports and includes an adaptable movable seat and a vertical guide rod. The shortcomings of the aforementioned patents are as follows: First, the patents have complex structures and use many components. The support components are located at the top of the crossbeam, which occupies the upper space of the crossbeam and makes it inconvenient to detect the deflection of the crossbeam surface. Second, the crossbeams are usually very long, and the deflection deformation is inconsistent at different points on the crossbeam. The hydraulic telescopic cylinder and steel wire rope in the aforementioned patents compensate for the deflection of the crossbeam. However, the steel wire rope has a large span, and the adjustment is a general one. It cannot be precisely adjusted to correspond to different positions of the crossbeam. This makes the crossbeam deflection deformation correction time long, the correction accuracy low, and time-consuming and labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a beam device that is simple in structure, has few parts, does not occupy the upper space of the beam, can correct the deflection deformation at different positions of the beam separately, has high correction accuracy, and is quick and convenient to correct.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A beam device includes a beam body with beam columns fixed on both sides of its lower end. The beam body is characterized by being hollow inside, with a beam deflection correction mechanism connected to the base plate of the beam body. This mechanism corrects the deflection of the beam body by adjusting the base plate, thereby adjusting the entire beam body and achieving the effect of correcting its deflection.

[0005] The beam deflection correction mechanism of this invention includes a cantilever beam, cantilever columns, tie rods, and adjusting nuts. The beam body has cantilever beams on both sides along its length. The cantilever beams are made of flexible material. Cantilever columns are located at both ends of the cantilever beams. The upper end of each column is fixedly connected to the cantilever beam, and the lower end is fixedly connected to the base plate of the beam body. Tie rods are provided between the cantilever beams and the base plate of the beam body, spaced apart along the length of the beam. Tie rod through-holes are spaced apart on the cantilever beams. The lower end of each tie rod is connected to the base plate of the beam body via a connecting part. Adjusting nuts are located at the upper end of the tie rods extending from the cantilever beams. The tie rods have external threads, and the adjusting nuts are threadedly connected to the tie rods to facilitate the detection of deflection deformation on the upper surface of the beam body. Adjusting the adjusting nuts on the tie rods at different positions, by rotating the adjusting nuts downwards, causes the tie rods to move upwards. This upward movement of the tie rods causes the base plate of the beam body at the tie rod connection point to move upwards, thus correcting the deflection of the entire beam body.

[0006] The connecting part of the present invention can be composed of threaded holes and external threaded sections. The bottom plate of the crossbeam body is provided with threaded holes at intervals, the lower part of the tie rod is provided with an external threaded section, and the lower end of the tie rod is threadedly connected to the crossbeam body to facilitate the installation of the tie rod.

[0007] The connecting part of the present invention can also be composed of a connecting block and a positioning hole. The bottom plate of the crossbeam body is provided with positioning holes at intervals. A connecting block is provided in the positioning hole. The lower end of the pull rod passes through the positioning hole and is fixedly connected to the connecting block. The upper end face of the connecting block abuts against the inner wall of the positioning hole so that the connecting block can be moved upward by the pull rod. The connecting block abuts against the inner wall of the positioning hole and moves the bottom plate upward.

[0008] The suspended beam column of the present invention is located above the horizontal beam column, so as to support the bottom plate of the horizontal beam through the horizontal beam column, and the bottom plate of the horizontal beam supports the suspended beam column.

[0009] The crossbeam body of the present invention includes a top plate, a bottom plate, and side plates. The top plate is fixedly connected to the bottom plate at the front, back, left, and right via the side plates. The top plate is provided with adjustment holes at intervals. The adjustment holes are configured to cooperate with the tie rods to facilitate the rotation of the adjustment nut through the adjustment holes to adjust the deflection of the bottom plate. The bottom plate is fixed to the top plate via the side plates, thereby adjusting the deflection of the top plate.

[0010] Because of the above-mentioned structure, the present invention has the advantages of simple structure, few parts, no occupation of the upper space of the crossbeam, the ability to correct the deflection deformation at different positions of the crossbeam separately, high correction accuracy, and fast and convenient correction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention.

[0012] Figure 2 This is the main sectional view of the present invention.

[0013] Figure 3 This is the present invention. Figure 2 Enlarged view of section A.

[0014] Figure 4 This is a top sectional view of the present invention.

[0015] Figure 5 This is the present invention. Figure 2 Side view.

[0016] Figure 6 This is a schematic diagram of the installation of the guide rail when using the present invention.

[0017] Reference numerals: 1. Crossbeam body; 2. Crossbeam column; 3. Crossbeam deflection correction mechanism; 4. Base plate; 5. Cantilever beam; 6. Cantilever column; 7. Tie rod; 8. Adjusting nut; 9. Top plate; 10. Side plate. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0019] A beam device includes a beam body 1, with beam columns 2 fixedly mounted on both sides of the lower end of the beam body 1. The beam body 1 is characterized by its hollow interior, with a beam deflection correction mechanism 3 installed inside. The beam deflection correction mechanism 3 is connected to a base plate 4 of the beam body 1 to correct the deflection of the beam body 1. This mechanism adjusts the base plate of the beam body, thereby adjusting the entire beam body and achieving the effect of correcting the beam body deflection.

[0020] The beam deflection correction mechanism 3 of the present invention includes a suspension beam 5, suspension beam columns 6, tie rods 7, and adjusting nuts 8. Suspension beams 5 are provided on both sides of the beam body 1 along its length. The suspension beams 5 are made of flexible material. Suspension beam columns 6 are provided at both ends of the suspension beams 5. The upper end of the suspension beam column 6 is fixedly connected to the suspension beam 5, and the lower end is fixedly connected to the base plate 4 of the beam body 1. Tie rods 7 are provided between the suspension beams 5 and the base plate 4 of the beam body 1. The tie rods 7 are spaced apart along the length of the beam. A tie rod through hole is provided. The lower end of the tie rod 7 is connected to the base plate 4 of the crossbeam body 1 via a connecting part. The upper end of the tie rod 7 passes through the cantilever beam 5 and is provided with an adjusting nut 8. The upper part of the tie rod 7 is provided with an external thread. The adjusting nut 8 is threadedly connected to the tie rod 7 to facilitate the detection of the deflection deformation of the upper end face of the crossbeam body. Adjusting the adjusting nuts on the tie rods at different positions and rotating the adjusting nuts downwards causes the tie rods to move upwards. The upward movement of the tie rods causes the base plate of the crossbeam body at the tie rod connection to move upwards, thus correcting the deflection of the entire crossbeam body.

[0021] The connecting part of the present invention can be composed of threaded holes and external threaded sections. The bottom plate 4 of the crossbeam body 1 is provided with threaded holes at intervals, and the lower part of the tie rod 7 is provided with an external threaded section. The lower end of the tie rod 7 is threadedly connected to the crossbeam body 1 to facilitate the installation of the tie rod.

[0022] The connecting part of the present invention can also be composed of a connecting block and a positioning hole. The bottom plate 4 of the crossbeam body 1 is provided with positioning holes at intervals. A connecting block is provided in the positioning hole. The lower end of the pull rod 7 passes through the positioning hole and is fixedly connected to the connecting block. The upper end face of the connecting block abuts against the inner wall of the positioning hole so that the connecting block can be moved upward by the pull rod. The connecting block abuts against the inner wall of the positioning hole and moves the bottom plate upward.

[0023] The cantilever column 6 of the present invention is located above the crossbeam column 2, so as to support the bottom plate of the crossbeam through the crossbeam column, and the bottom plate of the crossbeam supports the cantilever column.

[0024] The crossbeam body 1 of the present invention includes a top plate 9, a bottom plate 4 and side plates 10. The top plate 9 is fixedly connected to the bottom plate 4 at the front, back and left and right via the side plates 10. The top plate 9 is provided with adjustment holes at intervals. The adjustment holes are configured to cooperate with the tie rod 7 so as to facilitate the rotation of the adjustment nut through the adjustment hole to adjust the deflection of the bottom plate. The bottom plate is fixed to the top plate via the side plates, thereby adjusting the deflection of the top plate.

[0025] As attached Figure 1-5 The crossbeam body 1 of the present invention consists of a top plate 9, a bottom plate 4, and side plates 10 between them. Side plates 10 are arranged on both sides of the top plate 9 along its length, or four side plates 10 are arranged on the top plate 9 front, back, left, and right. The number of side plates is installed according to requirements. The upper end of the side plate 10 is fixed to the top plate 9, and the lower end is fixed to the bottom plate 4. The crossbeam deflection correction mechanism 3 is installed on the bottom plate 4. Crossbeam columns 2 are arranged on the left, right, front, and back sides of the lower end of the bottom plate 4, for a total of four crossbeam columns 2. The crossbeam columns 2 are fixedly connected to the bottom plate 4 to support the crossbeam body 1. A cantilever column 6 is fixed on the bottom plate 4 directly above the crossbeam columns 2. The beam column 2 supports the cantilever column 6 via the base plate 4. Inside the beam body 1, cantilever beams 5 are provided on both sides along the length of the beam body 1. The cantilever beams 5 are located above the base plate 4, and both ends of the cantilever beams 5 are fixedly connected to the cantilever column 6, which supports the cantilever beams 5. Multiple tie rods 7 are installed between the cantilever beams 5 and the base plate 4. The lower end of the tie rod 7 is fixed to the base plate 4, and the upper end passes through the cantilever beam 5 and is threadedly connected to the adjusting nut 8. After all the tie rods 7 are installed, the base plate 4 is fixedly connected to the lower end of the side plate 10 in all directions. The top plate 9 has adjustable holes spaced apart, the number and position of which correspond to the number and position of the tie rods 7. In use, guide rails are installed on the crossbeam body 1. One guide rail or two guide rails can be installed on the crossbeam body 1. The details are as follows: Firstly, when two guide rails are installed on the crossbeam body 1, as shown in the attached... Figure 6A guide rail is fixed to the upper end and the side of the crossbeam body 1. The upper guide rail is fixedly connected to the top plate 9, and the side guide rail is fixedly connected to the side plate 10. During testing, the deflection deformation of the guide rail surface at the upper end of the crossbeam body 1 is measured. The testing instruments are an optical autocollimator or a laser interferometer, both of which are existing components. The optical autocollimator or laser interferometer performs a linearity test on the guide rail surface. The testing method is the same as existing technology and will not be described in detail. When an uneven area is found on the guide rail surface, the operator locates the corresponding pull rod 7 below the uneven area. Then, the operator holds a tool, such as a wrench, passes it through the adjustment hole of the uneven area, and rotates the adjusting nut 8 on the pull rod 7 downwards. While adjusting, the operator uses an optical autocollimator or laser interferometer to check until the upper guide rail surface of the crossbeam body 1 reaches the design accuracy requirements. In this invention, rotating the adjusting nut 8 on the pull rod 7 adjusts the deflection of the base plate 4. The base plate 4 is fixed to the top plate 9 via the side plate 10. The base plate 4 will change the deflection of the top plate 9 through the side plate 10. After adjustment, the operator checks again. If any uneven areas are found, the operator adjusts again. This process is repeated multiple times until the upper guide rail surface of the crossbeam body 1 reaches the design accuracy requirements. Secondly, when a guide rail is installed on the crossbeam body 1, the guide rail can be hooked onto the crossbeam body 1. That is, the guide rail is fixed to the side plate 10 of the crossbeam body 1, the upper end of the guide rail is fixed to the top plate 9 of the crossbeam body 1, and the lower end of the guide rail is fixed to the bottom plate 4 of the crossbeam body 1. During testing, the deflection deformation of the upper guide rail surface of the crossbeam body 1 is measured using the same instruments and methods as above. When unevenness is found on the guide rail surface, the operator locates the corresponding pull rod 7 below the uneven area. The operator then holds a tool, such as a wrench, through the adjustment hole of the uneven area and rotates the adjusting nut 8 on the pull rod 7. The adjusting nut 8 is rotated downwards, and the adjustment is performed while using an optical autocollimator or laser interferometer until the upper guide rail surface of the crossbeam body 1 reaches the design accuracy requirements. In this invention, rotating the adjusting nut 8 on the pull rod 7 adjusts the deflection of the base plate 4. The base plate 4 is fixed to the top plate 9 via the side plate 10. The base plate 4 will change the deflection of the top plate 9 through the side plate 10. At the same time, the base plate 4 is also fixed to the top plate 9 via the guide rail. After the base plate 4 is adjusted, it will also drive the top plate to adjust through the guide rail. After adjustment, the inspection is performed again. If unevenness is found, the adjustment is performed again. This process is repeated multiple times until the upper guide rail surface of the crossbeam body 1 reaches the design accuracy requirements. The above two guide rail installation methods can be selected according to requirements. Compared with the prior art, the present invention has a simple structure, fewer components, and the beam deflection correction mechanism 3 is installed inside the beam body 1, without occupying the space on the upper surface of the beam body 1, which facilitates the installation of guide rails and the detection of guide rail surface deflection. In the present invention, the beam body 1 is composed of a top plate 9, a side plate 10, and a bottom plate 4. The bottom plate 4 is connected to the top plate 9 via the side plate 10. Adjusting the deflection of the bottom plate 4 will change the deflection of the top plate 9 through the side plate 10. That is, by adjusting the deflection deformation of the bottom plate 4, the deflection deformation of the top plate 9 is adjusted. Then, based on the deflection deformation of the top plate 9, the beam deflection correction mechanism 3 is operated until the deflection of the top plate is corrected. The deflection meets the requirements, thus, adjusting the deflection of the guide rail surface through the beam deflection correction mechanism 3 is very convenient. In this invention, the suspension beam 5 is flexible. By adjusting the distance between the tie rod 7 and the base plate 4 through the suspension beam 5, rotating the adjusting nut 8 drives the tie rod 7 to rise. The distance between the tie rod 7 and the base plate 4 becomes shorter, driving the base plate 4 to rise. The base plate 4 drives the top plate 9 to rise through the side plate 10, thereby achieving deflection correction of the top plate 9. Multiple tie rods 7 are set between the suspension beam 5 and the base plate 4, which can achieve precise adjustment of different positions of the base plate 4, and thus achieve precise adjustment of different positions of the top plate 9. With the existing optical autocollimator or laser interferometer detection equipment, the detection is convenient and fast.

[0026] Because of the above-mentioned structure, the present invention has the advantages of simple structure, few parts, no occupation of the upper space of the crossbeam, the ability to correct the deflection deformation at different positions of the crossbeam separately, high correction accuracy, and fast and convenient correction.

Claims

1. A beam device, comprising a beam body (1), wherein beam columns (2) are fixedly provided on both sides of the lower end of the beam body (1), characterized in that: The beam body (1) is hollow inside. The beam body (1) is provided with a beam deflection correction mechanism (3). The beam deflection correction mechanism (3) is connected to the bottom plate (4) of the beam body (1) to correct the deflection of the beam body (1).

2. The beam device according to claim 1, characterized in that: The beam deflection correction mechanism (3) includes a cantilever beam (5), a cantilever column (6), a tie rod (7), and an adjusting nut (8). The beam body (1) has a cantilever beam (5) on both sides along its length. The cantilever beam (5) is made of flexible material. The two ends of the cantilever beam (5) are respectively provided with a cantilever column (6). The upper end of the cantilever column (6) is fixedly connected to the cantilever beam (5), and the lower end is fixedly connected to the bottom plate (4) of the beam body (1). A tie rod (7) is provided between the cantilever beam (5) and the bottom plate (4) of the beam body (1). The tie rod (7) is spaced along the length of the beam. The cantilever beam (5) has tie rod through holes spaced apart. The lower end of the tie rod (7) is connected to the bottom plate (4) of the beam body (1) through a connecting part. The upper end of the tie rod (7) passes through the cantilever beam (5) and is provided with an adjusting nut (8). The upper part of the tie rod (7) is provided with an external thread. The adjusting nut (8) is threadedly connected to the tie rod (7).

3. The beam device according to claim 2, characterized in that: The connecting part consists of threaded holes and external threaded sections. The bottom plate (4) of the crossbeam body (1) is provided with threaded holes at intervals. The lower part of the tie rod (7) is provided with an external threaded section. The lower end of the tie rod (7) is threadedly connected to the crossbeam body (1).

4. A beam device according to claim 2, characterized in that: The connecting part consists of a connecting block and a positioning hole. The bottom plate (4) of the crossbeam body (1) is provided with positioning holes at intervals. The positioning hole is provided with a connecting block. The lower end of the pull rod (7) passes through the positioning hole and is fixedly connected to the connecting block. The upper end face of the connecting block abuts against the inner wall of the positioning hole.

5. A beam device according to claim 2, 3, or 4, characterized in that: The cantilever column (6) is located above the crossbeam column (2).

6. A beam device according to claim 2, 3, or 4, characterized in that: The crossbeam body (1) includes a top plate (9), a bottom plate (4) and a side plate (10). The top plate (9) is fixedly connected to the bottom plate (4) via the side plate (10). The top plate (9) is provided with adjustment holes at intervals. The adjustment holes are configured to cooperate with the tie rod (7).

Images