Screw rod supporting device of large gantry machining center

Abstract

The utility model discloses a lead screw supporting device of a large gantry machining center, which ensures that a lead screw is not easy to bend and deform, so that the lead screw reliably and stably works during rotation, and reliable operation of equipment is ensured. The mounting base comprises an upper connecting flange, a vertically arranged guide sleeve and an end cover; the support frame assembly comprises a support frame at the upper part and a guide end cover at the bottom; the linear floating mechanism comprises a linear buffer spring; and two pairs of first cam followers. The supporting frame is provided with two parallel transverse plates, the transverse plates are perpendicular to the lead screw, a pair of first cam followers is fixedly arranged on each transverse plate, a mounting shaft of each first cam follower is parallel to the axial direction of the lead screw, and a first follower wheel corresponding to the first cam follower is located outside the area of the supporting frame and arranged in an upward protruding mode. And a central guide supporting area is formed between the first follower wheels of each pair of first cam followers.

Description

Technical Field

[0001] This utility model relates to the technical field of CNC machining equipment, specifically to a lead screw support device for a large gantry machining center. Background Technology

[0002] In CNC machining equipment, the lead screws used in large gantry machining centers are relatively long and have a relatively large diameter, resulting in a large self-weight of the lead screw. This makes the lead screw prone to bending and deformation, which in turn leads to unreliable and unstable linear drive. Therefore, it is necessary to develop a support device for supporting the lead screw. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a lead screw support device for a large gantry machining center, which ensures that the lead screw is not prone to bending or deformation, enabling the lead screw to operate reliably and stably during rotation, and ensuring the reliable operation of the equipment.

[0004] A lead screw support device for a large gantry machining center, characterized in that it comprises:

[0005] The mounting base includes an upper connecting flange, a vertically arranged guide sleeve, and an end cap;

[0006] A support frame assembly, comprising an upper support frame and a bottom guide end cap;

[0007] A linear floating mechanism, which includes a linear buffer spring;

[0008] And two pairs of first cam followers;

[0009] The support frame is provided with two parallel horizontal plates, which are arranged perpendicular to the lead screw. A pair of first cam followers are fixed on each set of horizontal plates. The mounting shaft of each first cam follower is arranged parallel to the axial direction of the lead screw, and its corresponding first follower wheel is located outside the surface area of ​​the support frame and is arranged upwardly. A central guide support area is formed between the first follower wheels of each pair of first cam followers. The central guide support areas of the two pairs of first cam followers are arranged along the axial direction of the lead screw. The bottom of the lead screw is supported on the first follower wheel of each pair of first cam followers.

[0010] The guide end cap is located directly above the guide sleeve. The top of the linear buffer spring is mounted on the lower surface of the guide end cap, and the bottom of the linear buffer spring is mounted on the upper surface of the end cap. The linear buffer spring causes the first follower wheel to conform to the corresponding surface area of ​​the lead screw.

[0011] Its further features are:

[0012] The guide end cap is also fixedly connected to an inner guide block. The outer periphery of the inner guide block is provided with a guide arc surface that conforms to the shape of the inner wall of the guide sleeve. The inner guide block is also provided with two guide holes. The end cap is fixedly mounted with two guide shafts. The outer periphery of each set of guide shafts is fitted with the linear buffer spring. The guide shaft is set deep into the guide hole. The linear buffer spring extends from bottom to top into the guide hole and is mounted on the lower surface of the guide end cap. The lower part of the inner guide block is inserted into the inner cavity of the guide sleeve, which enables the support frame to perform reliable lifting and lowering actions.

[0013] The support frame is also provided with connecting frames on both sides. Each connecting frame includes a horizontal thick plate and a vertical side plate. A linear bearing is fixed on the horizontal thick plate. A guide column passes through the linear bearing from bottom to top and then protrudes upward. A connecting block is provided at the bottom of the guide column. A connecting hole is provided on the connecting block. The connecting hole ensures the reliable setting of the guide column and further ensures the reliable lifting and lowering movement of the support frame.

[0014] The length direction of each vertical side plate is parallel to the axis of the lead screw. A second cam follower is inserted at both ends of the length direction of each vertical side plate. The insertion shaft of the second cam follower is perpendicular to the lead screw. The second follower wheel of the second cam follower is located on the outside of the support frame and is arranged upwardly. The second cam follower is used to assist in supporting the open lower end area of ​​the lead screw nut to ensure the linear and stable operation of the mechanism.

[0015] After adopting the structure of this utility model, see Figure 3 Several sets of lead screw auxiliary support devices are evenly distributed and installed on the machine base and between the two bearing seats. The bottom of the lead screw is supported by the first follower wheel of each pair of first cam followers, which ensures that the lead screw is not prone to bending and deformation, so that the lead screw can operate reliably and stably when rotating, and ensure the reliable operation of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the front view sectional structure of this utility model;

[0018] Figure 3 This is a perspective view of the present invention assembled in a large gantry machining center;

[0019] The names corresponding to the serial numbers in the diagram are as follows:

[0020] Mounting base 10, upper connecting flange 11, guide sleeve 12, end cover 13, support frame assembly 20, support frame 21, horizontal plate 211, connecting frame 212, horizontal thick plate 213, vertical side plate 214, guide end cover 22, inner guide block 23, guide arc surface 231, linear floating mechanism 30, linear buffer spring 31, guide shaft 32, stop block 33, first cam follower 40, first follower wheel 41, lead screw 50, linear bearing 60, guide column 70, connecting block 71, connecting hole 72, second cam follower 80, second follower wheel 81, lead screw nut 90, lead screw auxiliary support device 100, machine base 110, bearing seat 120. Detailed Implementation

[0021] A lead screw support device for a large gantry machining center, see Figures 1-3 It includes a mounting base 10, a support frame assembly 20, a linear floating mechanism 30, and two pairs of first cam followers 40;

[0022] In practice, the mounting base 10 includes an upper connecting flange 11, a vertically arranged guide sleeve 12, and an end cap 13;

[0023] The support frame assembly 20 includes an upper support frame 21, a bottom guide end cap 22, and an inner guide block 23;

[0024] The linear floating mechanism 30 includes a linear buffer spring 31, a guide shaft 32, and a stop block 33;

[0025] The support frame 21 is provided with two parallel horizontal plates 211, which are arranged perpendicular to the lead screw 50. A pair of first cam followers 40 are fixed on each set of horizontal plates 211. The mounting shaft of each first cam follower 40 is arranged parallel to the axial direction of the lead screw 50, and its corresponding first follower wheel 51 is located outside the surface area of ​​the support frame 21 and is arranged upwardly. A central guide support area is formed between the first follower wheels 41 of each pair of first cam followers 40. The central guide support area of ​​the two pairs of first cam followers 40 is arranged along the axial direction of the lead screw 50. The bottom sides of the lead screw 50 are respectively supported by the first follower wheels 41 of each pair of first cam followers 40, so that the lead screw is centrally positioned corresponding to the upper part of each pair of first cam followers 40.

[0026] The guide end cap 22 is located directly above the guide sleeve 12. An inner guide block 23 is fixedly connected to the lower part of the guide end cap 22. The outer periphery of the inner guide block 23 is provided with a guide arc surface 231 that conforms to the shape of the inner wall of the guide sleeve. The inner guide block 23 is also provided with two guide holes. The end cap 13 is fixedly installed with a stop block 33 and a protruding guide shaft 32 below the guide holes. A linear buffer spring 31 is sleeved on the outer periphery of each set of guide shafts 32. The guide shaft 32 is set deep into the guide hole. The linear buffer spring 31 extends from bottom to top into the guide hole and is mounted on the lower surface of the guide end cap 22. The bottom of the linear buffer spring 31 is mounted on the stop block 33. The lower part of the inner guide block 23 is inserted into the inner cavity of the guide sleeve 12, which enables the support frame 21 to perform reliable lifting and lowering actions. The linear buffer spring 31 makes the first follower wheel 41 fit against the corresponding surface area of ​​the lead screw 50.

[0027] In a specific embodiment, the support frame 21 is also provided with connecting frames 212 on both sides. Each connecting frame 212 includes a horizontal thick plate 213 and a vertical side plate 214. A linear bearing 60 is fixed on the horizontal thick plate 213. A guide column 70 passes through the linear bearing 60 from bottom to top and then protrudes upward. A connecting block 71 is provided at the bottom of the guide column 70. A connecting hole 72 is provided on the connecting block 71. The connecting hole 72 ensures the reliable setting of the guide column 70 and further ensures the reliable lifting and lowering movement of the support frame 21.

[0028] In a specific embodiment, the length direction of each vertical side plate 214 is parallel to the axial direction of the lead screw 50. A second cam follower 80 is inserted at both ends of the length direction of each vertical side plate 214. The insertion shaft of the second cam follower 80 is perpendicular to the lead screw 50. The second follower wheel 81 of the second cam follower 80 is located on the outside of the support frame 21 and is arranged upwardly. The second follower wheel 81 of the second cam follower 80 is used to assist in supporting the open lower end area of ​​the lead screw nut 90, ensuring the linear and stable operation of the mechanism.

[0029] When he was working, he saw Figure 3 Several sets of lead screw auxiliary support devices 100 are evenly installed on the machine base 110 and between the two bearing seats 120. The bottom of the lead screw 50 is supported by the first follower wheel 41 of each pair of first cam followers 40 of each lead screw auxiliary support device 100, which ensures that the lead screw 50 is not prone to bending and deformation, so that the lead screw 50 can operate reliably and stably when rotating, and ensures the reliable operation of the equipment.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lead screw support device for a large gantry machining center, characterized in that, It includes: The mounting base includes an upper connecting flange, a vertically arranged guide sleeve, and an end cap; A support frame assembly, comprising an upper support frame and a bottom guide end cap; A linear floating mechanism, which includes a linear buffer spring; And two pairs of first cam followers; The support frame is provided with two parallel horizontal plates, which are arranged perpendicular to the lead screw. A pair of first cam followers are fixed on each set of horizontal plates. The mounting shaft of each first cam follower is arranged parallel to the axial direction of the lead screw, and its corresponding first follower wheel is located outside the surface area of ​​the support frame and is arranged upwardly. A central guide support area is formed between the first follower wheels of each pair of first cam followers. The central guide support areas of the two pairs of first cam followers are arranged along the axial direction of the lead screw. The bottom of the lead screw is supported on the first follower wheel of each pair of first cam followers. The guide end cap is located directly above the guide sleeve. The top of the linear buffer spring is mounted on the lower surface of the guide end cap, and the bottom of the linear buffer spring is mounted on the upper surface of the end cap. The linear buffer spring causes the first follower wheel to conform to the corresponding surface area of ​​the lead screw.

2. The lead screw support device for a large gantry machining center according to claim 1, characterized in that: The guide end cap is also fixedly connected to an inner guide block. The outer periphery of the inner guide block is provided with a guide arc surface that conforms to the shape of the inner wall of the guide sleeve. The inner guide block is also provided with two guide holes. The end cap is fixedly mounted with two guide shafts. The outer periphery of each set of guide shafts is sleeved with the linear buffer spring. The guide shaft is set deep into the guide hole. The linear buffer spring extends from bottom to top into the guide hole and is mounted on the lower surface of the guide end cap. The lower part of the inner guide block is inserted into the inner cavity of the guide sleeve.

3. A lead screw support device for a large gantry machining center according to claim 1 or 2, characterized in that: The support frame is also provided with connecting frames on both sides. Each connecting frame includes a horizontal thick plate and a vertical side plate. A linear bearing is fixed on the horizontal thick plate. A guide column passes through the linear bearing from bottom to top and protrudes upward. A connecting block is provided at the bottom of the guide column, and a connecting hole is provided on the connecting block.

4. The lead screw support device for a large gantry machining center according to claim 3, characterized in that: The length direction of each vertical side plate is parallel to the axial direction of the lead screw. A second cam follower is inserted at both ends of the length direction of each vertical side plate. The insertion shaft of the second cam follower is perpendicular to the lead screw. The second follower wheel of the second cam follower is located on the outside of the support frame and is arranged upwardly. The second cam follower is used to assist in supporting the open lower end area of ​​the lead screw nut.

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