CN111230572A - Device and method for adjusting straightness of cross beam of large-span gantry machining center - Google Patents
Device and method for adjusting straightness of cross beam of large-span gantry machining center Download PDFInfo
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- CN111230572A CN111230572A CN202010137600.8A CN202010137600A CN111230572A CN 111230572 A CN111230572 A CN 111230572A CN 202010137600 A CN202010137600 A CN 202010137600A CN 111230572 A CN111230572 A CN 111230572A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
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Abstract
The invention discloses a device and a method for adjusting the straightness of a cross beam of a large-span gantry machining center. Adjusting seats are symmetrically and fixedly installed on two sides of the upper plane of the gantry beam, two lifting bolts are symmetrically and fixedly installed in the center of the lower side of the gantry beam, the end with a hook of the screw rod with the hook is hooked in the lifting ring of the corresponding lifting bolt, and the other end with the thread penetrates through the hole of the adjusting seat. The natural straightness of the cross beam after load or load is detected through the flat ruler, and the adjusting nuts on two sides are rotated so as to adjust the magnitude of the upward inclined pulling force of the screw rod with the hook to compensate and offset the sagging deformation of the cross beam. The invention can adjust the straightness of the beam of the gantry machining center and improve the geometric accuracy of the machine tool.
Description
Technical Field
The invention relates to the technical field of machining equipment, in particular to a method for adjusting the straightness of a beam of a large-span gantry machining center.
Background
At present, a gantry machining center is gradually developed towards a large-scale and ultra-large-scale direction, the span of a cross beam is increasingly large, the cross beam generates sagging deformation due to the weight of the cross beam and moving parts on the cross beam, the straightness is ultra-poor, and the geometric precision of a machine tool is directly influenced. In order to improve the resistance of the machine tool beam to deformation, the common method is to change the structure and the size of a rib plate inside the beam so as to enhance the rigidity of the beam and reduce the sagging deformation. The existing method for improving the structure of the beam cannot completely eliminate the sagging deformation of the beam of the large-span gantry machining center. The beam of the large-span gantry machining center is adjusted to compensate and offset the dead weight of the beam and the sagging deformation caused by loading, so that the straightness of the beam is ensured, and the geometric accuracy of a machine tool can be improved.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the actual requirement of adjusting the straightness of the cross beam of the large-span gantry machining center, the invention designs the device and the method for adjusting the straightness of the cross beam of the large-span gantry machining center, which are used for compensating and offsetting the self weight of the cross beam and the sagging deformation generated by loading, ensuring the straightness of the cross beam and improving the geometric precision of the gantry machining center. The invention can adjust the straightness of the beam of the large-span gantry machining center, thereby improving the geometric accuracy of the machine tool, and having convenient adjustment, wide application range and stable and reliable performance.
The technical scheme is as follows: a large-span gantry machining center cross beam straightness adjusting device comprises a hooked screw I, a hooked screw II, an adjusting nut I, an adjusting nut II, an adjusting seat I, an adjusting seat II, a locking nut and a lifting bolt;
the adjusting seats I and II are respectively and symmetrically and fixedly arranged on two sides of the upper plane of the large-span gantry machining center cross beam, and the lifting eye bolts are symmetrically and fixedly arranged in the center of the lower side of the large-span gantry machining center cross beam;
the ends with hooks of the screw rod I with the hook and the screw rod II with the hook are hooked in the lifting rings of the corresponding lifting bolts, and the other ends of the threads respectively penetrate through holes of the adjusting seat I and the adjusting seat II;
and the adjusting nut I and the adjusting nut II are respectively screwed on the screw rods of the screw rod I with the hook and the screw rod II with the hook.
A method for adjusting the straightness of a cross beam of a large-span gantry machining center comprises the following steps:
the method comprises the following steps that firstly, the straightness adjusting devices are symmetrically and fixedly installed on two sides of a cross beam of a large-span gantry machining center and used for applying four obliquely upward pulling forces to the cross beam to compensate and offset sagging deformation of the cross beam;
secondly, detecting the natural straightness of the beam after load or load is applied to the upper plane of the beam of the large-span gantry machining center through a flat ruler, and rotating adjusting nuts at two sides so as to adjust the magnitude of the obliquely upward tension of the hooked screw I and the hooked screw II to compensate and offset the sagging deformation of the beam;
and thirdly, after the beam of the large-span gantry machining center reaches good straightness, screwing the locking nut, and finishing adjustment.
Has the advantages that: the design of the invention can adjust the straightness of the beam of the gantry machining center, improve the geometric accuracy of the machine tool, and has the advantages of convenient adjustment, wide application range and stable and reliable performance.
Drawings
FIG. 1 is a schematic view of a beam of a large-span gantry machining center for loading or bearing a load;
FIG. 2 is a schematic view of a beam straightness adjusting device of a large-span gantry machining center;
FIG. 3 is a top view of a beam straightness adjusting device of a large-span gantry machining center;
FIG. 4 is a left side view of the beam straightness adjusting device of the large-span gantry machining center.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
As shown in figure 1, the beam of the large-span gantry machining center has out-of-straightness under the conditions of load bearing and loading.
As shown in fig. 2-4, two adjusting seats i 4 and two adjusting seats ii 8 are respectively and fixedly installed on two sides of the upper plane of the large-span gantry machining center beam, and two eyebolts 9 are symmetrically and fixedly installed at the center position of the lower side of the large-span gantry machining center beam; the ends with hooks of the two screws I1 with hooks and the two screws II 5 with hooks are hooked in the corresponding lifting rings of the lifting ring bolt 9, and the other ends with threads respectively penetrate through holes of the adjusting seat I4 and the adjusting seat II 8; and the adjusting nut I3 and the adjusting nut II 7 are respectively screwed on the screw threads of the screw rod I1 with the hook and the screw rod II 5 with the hook.
A method for adjusting the straightness of a cross beam of a large-span gantry machining center comprises the following steps:
the method comprises the following steps that firstly, the straightness adjusting devices are symmetrically and fixedly installed on two sides of a cross beam of a large-span gantry machining center and used for applying four obliquely upward pulling forces to the cross beam to compensate and offset sagging deformation of the cross beam;
secondly, detecting the natural straightness of the beam after load or loading through a flat ruler on the upper plane of the beam of the large-span gantry machining center, and rotating adjusting nuts I3 and II 7 at two sides so as to adjust the magnitude of the upward inclined tension of a screw rod I1 with a hook and a screw rod II 5 with a hook to compensate and offset the sagging deformation of the beam;
and thirdly, after the beam of the large-span gantry machining center reaches good straightness, tightening the locking nuts (2 and 6) and finishing adjustment.
The design of the invention can adjust the straightness of the beam of the gantry machining center, improve the geometric accuracy of the machine tool, and has the advantages of convenient adjustment, wide application range and stable and reliable performance.
Claims (2)
1. The utility model provides a big span longmen machining center crossbeam straightness accuracy adjusting device which characterized in that: the device comprises a screw rod I (1) with a hook, a screw rod II (5) with a hook, an adjusting nut I (3), an adjusting nut II (7), locking nuts (2, 6), an adjusting seat I (4), an adjusting seat II (8) and a lifting bolt (9);
the adjusting seats I (4) and II (8) are respectively and symmetrically and fixedly arranged on two sides of the upper plane of the large-span gantry machining center cross beam, and the lifting eye bolts (9) are symmetrically and fixedly arranged in the center positions of the lower sides of the large-span gantry machining center cross beam;
the ends with hooks of the screw rod I (1) with the hook and the screw rod II (5) with the hook are hooked in the lifting rings of the corresponding lifting ring bolts (9), and the other ends with threads respectively penetrate through holes of the adjusting seat I (4) and the adjusting seat II (8);
the adjusting nut I (3) and the adjusting nut II (7) are respectively screwed on the screw rods of the screw rod I (1) with the hook and the screw rod II (5) with the hook.
2. The adjusting method of the beam straightness adjusting device of the large-span gantry machining center according to claim 1, is characterized in that: the method comprises the following steps:
the method comprises the following steps that firstly, the straightness adjusting devices are symmetrically and fixedly installed on two sides of a cross beam of a large-span gantry machining center and used for applying four obliquely upward pulling forces to the cross beam to compensate and offset sagging deformation of the cross beam;
secondly, detecting the natural straightness of the beam after load or loading through a flat ruler on the upper plane of the beam of the large-span gantry machining center, and rotating adjusting nuts I (3) and II (7) at two sides so as to adjust the magnitude of the obliquely upward tension of a screw rod I (1) with a hook and a screw rod II (5) with a hook to compensate and offset the sagging deformation of the beam;
and thirdly, after the beam of the large-span gantry machining center reaches good straightness, screwing each locking nut (2 and 6) and finishing adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137600.8A CN111230572A (en) | 2020-03-02 | 2020-03-02 | Device and method for adjusting straightness of cross beam of large-span gantry machining center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137600.8A CN111230572A (en) | 2020-03-02 | 2020-03-02 | Device and method for adjusting straightness of cross beam of large-span gantry machining center |
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| Publication Number | Publication Date |
|---|---|
| CN111230572A true CN111230572A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010137600.8A Pending CN111230572A (en) | 2020-03-02 | 2020-03-02 | Device and method for adjusting straightness of cross beam of large-span gantry machining center |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025329A (en) * | 2020-08-27 | 2020-12-04 | 山东省机械设计研究院 | Self-straightening machine tool beam |
| CN117020942A (en) * | 2023-09-22 | 2023-11-10 | 无锡市明鑫机床有限公司 | Vertical numerically controlled grinder fixed beam sagging-preventing auxiliary compensation device and process |
-
2020
- 2020-03-02 CN CN202010137600.8A patent/CN111230572A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025329A (en) * | 2020-08-27 | 2020-12-04 | 山东省机械设计研究院 | Self-straightening machine tool beam |
| CN117020942A (en) * | 2023-09-22 | 2023-11-10 | 无锡市明鑫机床有限公司 | Vertical numerically controlled grinder fixed beam sagging-preventing auxiliary compensation device and process |
| CN117020942B (en) * | 2023-09-22 | 2024-02-02 | 无锡市明鑫机床有限公司 | Vertical numerically controlled grinder fixed beam sagging-preventing auxiliary compensation device and process |
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