CN109926836A - A kind of numerical control gantry crossbeam - Google Patents

Abstract

The invention provides a numerically controlled gantry beam, which includes a beam body and an adjustment assembly; the beam body is an arched structure with an arc-shaped protrusion in the middle, and the left and right sides of the bottom of the beam body are respectively provided with upwardly inclined arcuate surfaces ; The adjustment assembly includes a fixed block, a pull rod and a locking nut, the two fixed blocks are respectively installed on the two arched surfaces, and the two fixed blocks are provided with through holes for the pull rod to pass through, so the The left and right ends of the tie rod protrude through two through holes respectively and are threadedly connected to the locking nut, and the locking nut tightens the left and right ends of the tie rod and abuts the fixing block from the outside of the fixing block. The invention is suitable for large-span moving column type CNC gantry, the beam has good rigidity and stability, is not easy to sag and deform, and the deflection of the beam can be fine-tuned, so that the deformation of the beam during the working process is controllable, and the reliability of the beam is improved.

Description

A CNC gantry beam

technical field

The invention belongs to the technical field of processing equipment, and particularly relates to a numerically controlled gantry beam.

Background technique

For large-span moving column CNC gantry, the beam is usually a straight-line rigid structure. Because the span of the beam is too large, the machine head on the beam presses the beam, causing the middle of the beam to sag, resulting in poor machining accuracy. , the problem of poor rigidity and stability of the beam; the deflection of the CNC gantry beam of this structure cannot be adjusted, and under the action of frequently changing cutting forces, the deformed beam will vibrate and deform again. The degree of influence on machining accuracy and machining stability is increased.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a CNC gantry beam, which is suitable for a large-span moving column type CNC gantry. Control, improve the reliability of beam work.

The invention provides the following technical solutions:

A CNC gantry beam, comprising a beam body and an adjustment assembly; the beam body is an arched structure with a middle convex, and the left and right sides of the bottom of the beam body are respectively provided with upwardly inclined arcuate surfaces; the adjustment assembly includes A fixing block, a tie rod and a locking nut. The two fixing blocks are respectively installed on the two arched surfaces. The two fixing blocks are provided with through holes for the tie rod to pass through. The left and right ends of the tie rod The two through holes are respectively protruded and then connected with the locking nut by thread. The locking nut tightens the left and right ends of the tie rod and abuts the fixing block from the outside of the fixing block.

Preferably, the adjustment assembly further includes an anti-loosening nut, the two anti-loosening nuts are respectively installed on the left and right ends of the tie rod, and the anti-loosening nuts press the lock nut from the outside of the locking nut Tighten the nut.

Preferably, the through holes are waist-shaped holes arranged in the longitudinal direction.

Preferably, the tie rod includes a tie rod body and mounting parts respectively connected to the left and right ends of the tie rod body, the diameter of the installation part is smaller than the diameter of the tie rod body, and the diameter of the installation part is the same as the diameter of the through hole. The diameters are matched, and the mounting portion extends into the through hole.

Preferably, the beam body includes an outer frame, a central circular tube and a reinforcing plate, the central circular tube penetrates the outer frame in a horizontal direction, and the reinforcing plate radially connects the central circular tube and the outer frame on the circumferential surface of the central circular tube .

Preferably, a plurality of first weight-reducing holes are machined on the central circular tube.

Preferably, the front side of the outer frame is provided with a horizontal guide rail and a sliding block matched with the guide rail, and the sliding block is fixedly connected with the machine head; the back side of the outer frame is provided with a number of second weight-reducing holes.

Preferably, the first weight-reducing hole is located near the back side of the outer frame.

Preferably, the reinforcing plate is provided with a plurality of third weight-reducing holes.

The beneficial effects of the present invention are as follows: the present invention is suitable for a large-span moving column type CNC gantry, and the top and bottom of the beam body are set as arch structures at the same time, preventing the beam body from sagging due to gravity, and enhancing the rigidity and thermal stability of the beam body at the same time. so as to ensure the long-term use accuracy of the beam body. Install the adjustment component on the arched surface at the bottom of the beam body, and fine-tune the length of the tie rod extending from the fixed block through the locking nut, so that the tie rod pulls the beam to produce slight deformation, so as to control the deformation of the beam arch. The reliability of the beam work is guaranteed.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the partial bottom view structure schematic diagram of the adjustment assembly of the present invention;

Fig. 3 is another perspective structural schematic diagram of the adjustment assembly of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the beam body of the present invention.

Marked as: 1. Beam body; 2. Arched surface; 3. Fixed block; 4. Pull rod; 5. Lock nut; 6. Anti-loosening nut; 7. Through hole; 8. Pull rod body; 9. Installation 10. Outer frame; 11. Central tube; 12. Reinforcing plate; 13. First weight reduction hole; 14. Second weight reduction hole; 15. Third weight reduction hole; 16. Guide rail; 17. Machine head .

Detailed ways

This embodiment provides a beam suitable for a large-span moving column type CNC gantry, which is installed on the column of the CNC gantry. As shown in Figures 1 to 4, the CNC gantry beam includes a beam body 1 and an adjustment assembly. The beam body 1 is an arched structure with an arc-shaped convexity in the middle of the top and the bottom. The left and right sides of the bottom of the beam body 1 are respectively provided with upwardly inclined arched surfaces 2. The top and bottom of the beam body 1 are arched structures. The beam body is prevented from sagging due to gravity, while the rigidity of the beam body is enhanced. The adjustment assembly includes a fixed block 3, a pull rod 4 and a locking nut 5. The two fixed blocks 3 are respectively installed on the two arched surfaces 2, and the two fixed blocks 3 are provided with through holes 7 for the pull rod 4 to pass through. The left and right ends of the pull rod 4 protrude through two through holes 7 respectively and are threadedly connected with the locking nut 5 . The length of the pull rod 4 extending from the fixed block 3 is fine-tuned by the locking nut 5, so that the pull rod 4 pulls the two sides of the beam body 1 to produce slight deformation, so as to adjust the arch deformation of the beam.

As shown in FIG. 2 , the adjustment assembly further includes an anti-loosening nut 6, two anti-loosening nuts 6 are respectively installed on the left and right ends of the tie rod 4, and the anti-loosening nut 6 compresses the locking nut 5 from the outside of the locking nut 5, After the adjustment of the pull rod 4 is completed, lock the anti-loose nut 6 to prevent the whole set of mechanisms from loosening during later use.

As shown in FIG. 3 , the through hole 7 is a waist-shaped hole arranged in the longitudinal direction. When the beam body 1 is slightly deformed, the inclination angle of the fixing block 3 on the arched surface 2 also changes, so the through hole 7 is set as a waist-shaped hole. The hole prevents the fixing block 3 from exerting longitudinal pressure on both ends of the tie rod 4 to cause the tie rod 4 to deform flexibly, ensuring that the tie rod 4 can effectively tension the beam body 1 and prolong the service life of the tie rod 4.

As shown in FIG. 2 , the tie rod 4 includes a tie rod body 8 and mounting parts 9 respectively connected to the left and right ends of the tie rod body 8 . Matchingly, the mounting portion 9 extends into the through hole 7 . The diameter of the tie rod body 8 is larger than the diameter of the installation part 9, which can limit the length of the installation part 9 extending out of the through hole 7, prevent the tie rod 4 from over-tensioning the beam body 1, and ensure that the beam body only has a slight deformation, and does not affect its level. Support and rigidity.

As shown in FIG. 2 , two tie rods 4 are installed in parallel on the fixed block 3 , and the two tie rods 4 increase the tension force on the beam body 1 .

As shown in FIG. 4 , the beam body 1 includes an outer frame 10 , a central circular tube 11 and a reinforcing plate 12 , the central circular tube 11 penetrates the outer frame 10 in the horizontal direction, and a plurality of reinforcing plates 12 are formed on the circumferential surface of the central circular tube 11 The central circular tube 11 and the outer frame 10 are connected radially. The structure of the central circular tube 11 has extremely strong rigidity and deformation resistance. A plurality of reinforcing plates 12 are connected on the circumferential surface of the central circular tube 11, so that when the beam body 1 is stressed, the pressure is relatively evenly distributed along the reinforcing plates 12. In addition, the ultra-high thermal deformation resistance of the beam body 1 is ensured, and the use accuracy of the beam body 1 is ensured. A number of first weight reduction holes 13 are processed on the central circular tube 11, and a number of third weight reduction holes 15 are arranged on the reinforcing plate 12. The first weight reduction holes 13 and the third weight reduction holes 15 reduce the size of the beam body 1. The weight of the machine improves the lightweight performance of the whole machine.

As shown in FIG. 1, the front of the outer frame 10 is provided with a horizontal guide rail 16 and a slider matching the guide rail 16. The slider is fixedly connected with the machine head 17, and the machine head 17 can move horizontally along the guide rail 16. workpiece for processing. The back of the outer frame 10 is provided with a plurality of second weight reduction holes 14 .

The first weight-reducing hole 13 is located near the back side of the outer frame 10 to ensure the support strength of the beam body 1 to the nose 17 on the front side.

The deformation adjustment process of the CNC gantry beam is as follows: insert the two ends of the tie rod 4 into the through holes 7 of the two fixing blocks 3 respectively, and extend the fixing block 3, and tighten the two locking nuts 5 on the installation part of the tie rod 4 , make it abut the fixing block 3, and then install the anti-loosening nut 6 to prevent the locking nut 5 from loosening, so that the adjustment assembly tensions the beam body 1, so that the two ends of the beam body 1 are slightly deformed, and the beam body 1 is slightly deformed. Adjustment of the deformation amount of the main body 1.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still understand the foregoing embodiments. The technical solutions described are modified, or some technical features thereof are equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. a kind of numerical control gantry crossbeam, which is characterized in that including cross-beam body and adjustment component；The cross-beam body is intermediate convex The domes risen, the cross-beam body bottom is respectively arranged on the left side and the right side acclivitous arcuate surface；The adjustment component Including fixed block, pull rod and locking nut, two fixed blocks are respectively arranged on two arcuate surfaces, and two described solid Determine to be equipped with the through-hole passed through for the pull rod in block, the left and right ends of the pull rod stretch out respectively after two through-holes with institute Locking nut threaded connection is stated, the locking nut tenses the left and right ends of the pull rod and supports from the outside of the fixed block Connect the fixed block.

2. a kind of numerical control gantry crossbeam according to claim 1, which is characterized in that the adjustment component further includes anti-loosening Nut, two Anti-loosening nuts are respectively arranged in the left and right ends of the pull rod, and the Anti-loosening nut is from described Locking nut described in the outer side compression of locking nut.

3. a kind of numerical control gantry crossbeam according to claim 2, which is characterized in that the through-hole is longitudinally disposed waist Type hole.

4. a kind of numerical control gantry crossbeam according to claim 3, which is characterized in that the pull rod includes bar body and divides It is not connected to the mounting portion of the left and right ends of the bar body, the diameter of the mounting portion is less than the straight of the bar body Diameter, the diameter of the mounting portion and the diameter of the through-hole match, and the mounting portion protrudes into the through-hole.

5. a kind of numerical control gantry crossbeam according to any one of claim 1 to 4, which is characterized in that the cross-beam body Including outline border, central pipe and stiffening plate, the central pipe runs through the outline border in the horizontal direction, and stiffening plate described in muti-piece exists The central pipe and the outline border are radially connected on the circumferential surface of the central pipe.

6. a kind of numerical control gantry crossbeam according to claim 5, which is characterized in that be machined on the central pipe several A first lightening hole.

7. a kind of numerical control gantry crossbeam according to claim 6, which is characterized in that the front of the outline border is equipped with horizontal Guide rail and sliding block with the guide rail, the sliding block are fixedly connected with head；The back side of the outline border be equipped with several the Two lightening holes.

8. a kind of numerical control gantry crossbeam according to claim 7, which is characterized in that first lightening hole is located at close to institute State the reverse side of outline border.

9. a kind of numerical control gantry crossbeam according to claim 5, which is characterized in that the stiffening plate be equipped with several the Three lightening holes.