CN113532380B

CN113532380B - Combined type heavy machine tool foundation settlement precision detection device

Info

Publication number: CN113532380B
Application number: CN202110877666.5A
Authority: CN
Inventors: 杨聪彬; 张建涛; 刘志峰; 姜凯; 赵永胜; 苏贺旺
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2021-08-01
Filing date: 2021-08-01
Publication date: 2023-06-23
Anticipated expiration: 2041-08-01
Also published as: CN113532380A

Abstract

The invention discloses a combined type heavy machine tool foundation settlement precision detection device, and belongs to the field of heavy machine tool foundation settlement precision detection. According to the structural characteristics of the heavy numerical control machine tool, main stress areas of a foundation are respectively designed into a plurality of foundation sub-block combined structures, optical fiber sensors are paved in the foundation sub-blocks for detecting bearing deformation of the foundation, the single optical fiber sensors are convenient to install and higher in detection precision, and the combined foundation blocks can realize replacement of the single foundation sub-blocks. The optical fiber sensor is led out through the reserved groove of the base block and connected in parallel to the multi-channel acquisition equipment, when the optical fiber sensor is damaged, the base block with problems is conveniently and rapidly positioned, and finally, the data acquisition of base settlement is realized by using the distributed optical fiber sensing system. The experimental device adopts an adjustable foundation box to ensure the rigidity requirement of the combined foundation block.

Description

Combined type heavy machine tool foundation settlement precision detection device

Technical Field

The invention relates to the technical field of foundation settlement detection of a heavy numerical control machine tool, in particular to a combined type foundation settlement precision detection device of a heavy numerical control machine tool.

Background

The concrete foundation is a supporting body of a heavy numerical control machine tool, and the bearing deformation of the concrete foundation directly influences the working precision and the service life of machine tool parts. In order to ensure accuracy, it is generally required that the base portion of the bed guide rail be inclined by an amount of not more than 0.005mm in the longitudinal direction. The high-precision detection method is required to be matched with the high-precision design requirement, the traditional detection method cannot meet the detection requirement no matter from the sensor assembly or the test precision, and the problem can be well solved by paving the optical fiber sensor with high measurement sensitivity and strong anti-interference capability in the concrete foundation. In view of the large-scale and large-volume characteristics of the heavy numerical control machine tool, an experimental model with a reduced size is often selected for research, but once concrete is poured, the concrete cannot be changed, when an optical fiber sensor laid inside fails, the deformation of the area cannot be detected in the subsequent work, and only a new experimental device can be replaced, so that economic waste is caused. Therefore, in order to save the experiment cost, the research on the combined type basic detection device for the basic settlement detection of the heavy numerical control machine tool has important significance.

Disclosure of Invention

The invention aims to provide a combined type heavy machine tool foundation settlement precision detection device, which acquires settlement deformation data of a heavy machine tool foundation through an experimental device, and can realize replacement of foundation blocks and high-precision detection of a short-distance distributed sensor aiming at the problems of resource waste caused by incapability of replacement due to damage of an embedded sensor in an integrated foundation and detection precision caused by longer single sensor.

In order to achieve the aim, the technical scheme adopted by the invention is that the combined type heavy machine tool foundation settlement precision detection device comprises a detachable foundation box, a replaceable foundation block, an optical fiber sensor, multi-channel acquisition port equipment and an ODiSI distributed optical fiber sensing system.

The method comprises the steps of arranging a first combined type basic sub-block 1, a second combined type basic sub-block 2, a third combined type basic sub-block 3 and a fourth combined type basic sub-block 4 on one side of a ninth combined type basic sub-block 16 in series connection, arranging a fifth combined type basic sub-block 10, a sixth combined type basic sub-block 11, a seventh combined type basic sub-block 12 and an eighth combined type basic sub-block 13 on the other side in series connection, and combining a machine tool basic model with a cubic structure. The foundation sub-blocks are fixed by the 5 adjustable foundation box, and the connection rigidity of the combined foundation is ensured by the 6 adjusting nuts.

As shown in fig. 3, each combined foundation sub-block adopts a reinforced concrete structure, 8 optical fiber sensors are glued and sealed on 15 optical fiber sensor carriers inside each combined foundation sub-block, the optical fiber sensors are led out along 9 reserved grooves on each combined foundation sub-block and are connected to multi-channel acquisition port equipment arranged outside a foundation box in parallel. The multichannel acquisition port equipment is connected with the ODiSI distributed optical fiber sensing system through an acquisition data line on a 5-adjustable foundation box through bolt bolting, and acquired foundation settlement data at different positions.

The invention has the following advantages:

1. each sub-block forming the foundation of the heavy machine tool is replaceable, when the optical fiber sensor laid in the foundation sub-block fails, the foundation settlement detection system with a complete detection area can be combined by replacing the sub-block, a model does not need to be manufactured again, and resource waste is avoided.

2. The foundation sub-block is small in volume, the length of a single sensor is short compared with that of an optical fiber sensor paved in the whole machine body, and when concrete is poured, the problem of straightness and installation stress of the sensor caused by the fact that the optical fiber sensor is long can be reduced, and later leveling and zeroing work is avoided; the short-distance distributed optical fiber sensor is more convenient to install and higher in measurement accuracy.

3. The basic sub-block optical fiber sensor realizes independent collection and is connected to a collection port device with multiple channels, and if the optical fiber sensor has problems, the problematic basic sub-block can be rapidly positioned according to the preset channel number.

4. The simple foundation box control is arranged around the foundation sub-block, the tightness of the connecting bolts can be adjusted to ensure the rigidity of the foundation block in the horizontal direction, and the detection accuracy is improved.

Drawings

FIG. 1 is a schematic diagram of the whole structure of the device

FIG. 2 is a schematic diagram of a combined foundation.

Fig. 3 is a schematic diagram of adjacent basic sub-blocks.

In the figure: 1. combined

foundation sub-blocks

1,2, combined

foundation sub-blocks

2,3, combined

foundation sub-blocks

3,4, combined

foundation sub-blocks

4, 10, combined

foundation sub-blocks

5, 11, combined

foundation sub-blocks

6, 12, combined

foundation sub-blocks

7, 13, combined

foundation sub-blocks

8, 16, combined

foundation sub-blocks

9,5, adjustable foundation boxes, 6, adjusting nuts, 7, multi-channel acquisition port devices, 8, optical fiber sensors, 9, foundation sub-block reserved slots, 14, ODiSI distributed optical fiber sensing systems, 15, optical fiber sensor carriers

Detailed Description

Fig. 1-3 show a combined type heavy machine tool foundation settlement precision detection device.

And determining the size of the machine tool foundation according to the set machine tool scale. And selecting to arrange optical fiber sensors at the positions of the basic comparison guide rails according to the topological structure and the stress characteristics of the machine tool. To realize the replacement of the damaged sensor, each side is designed in a combined way, and can be determined according to practical situations, wherein the side is divided into four sub-blocks, and the length of each sub-block is equivalent. The periphery of the combined foundation is fixed by an adjustable foundation box 5, the rigidity of the foundation block is ensured by adjusting the tightness of an adjusting nut 6, the roughness of the contact surface is ensured by a single combined foundation sub-block, the full contact is ensured, and the generation of gaps is avoided.

And the rigidity of the foundation sub-block is ensured by adopting a cross reinforcement distribution mode in the foundation sub-block. A layer of fiber optic sensor carriers 15 is arranged horizontally along the X-direction in the middle of the foundation. Milling a groove with proper size along the axial direction of the optical fiber sensor carrier 15, performing corresponding polishing treatment to avoid scratching the sensor, adhering the optical fiber sensor 8 in the groove of the optical fiber sensor carrier 15, adding pretightening force with proper size to ensure that the optical fiber sensor 8 is fully contacted with the bottom surface of the groove, ensuring that the optical fiber sensor 8 and the optical fiber sensor carrier 15 deform synchronously, adhering and packaging the optical fiber sensor in a reserved groove of the optical fiber sensor carrier 15, adopting an armor sheath wire to package and protect the rest optical fiber sensor, and guiding the optical fiber sensor 8 out along the axial direction of the reserved groove 9 of the basic subblock.

The optical fiber sensors led out by the basic sub-blocks are connected to the corresponding channels at the 7 positions in parallel, so that the parallel collection work of the distributed optical fiber sensors is realized, and the position of the optical fiber sensor with the problem is conveniently found.

And connecting the multichannel acquisition port equipment 7 with the ODiSI distributed optical fiber sensing system 14 by an acquisition data line to obtain settlement deformation data of different positions of the machine tool basic model.

Claims

1. The utility model provides a combination formula heavy lathe basis subsides accurate detection device which characterized in that: the device comprises a detachable foundation box, a replaceable foundation block, an optical fiber sensor, a multi-channel acquisition port device and an ODiSI distributed optical fiber sensing system;

the replaceable foundation block comprises a first combined foundation sub-block, a second combined foundation sub-block, a third combined foundation sub-block, a fourth combined foundation sub-block, a fifth combined foundation sub-block, a sixth combined foundation sub-block, a seventh combined foundation sub-block, an eighth combined foundation sub-block and a ninth combined foundation sub-block; placing the first combined type basic sub-block, the second combined type basic sub-block, the third combined type basic sub-block and the fourth combined type basic sub-block on one side of the ninth combined type basic sub-block in series connection, placing the fifth combined type basic sub-block, the sixth combined type basic sub-block and the seventh combined type basic sub-block on the other side in series connection, and combining the machine tool basic models with a cubic structure; fixing the foundation sub-blocks by using a detachable foundation box, fixing the peripheries of the combined foundation sub-blocks by using an adjustable foundation box, and ensuring the connection rigidity of the combined foundation by using an adjusting nut;

each replaceable foundation block adopts a reinforced concrete structure, the optical fiber sensor is glued and sealed on an optical fiber sensor carrier inside each combined foundation sub-block, the optical fiber sensor is led out along a reserved groove on each combined foundation sub-block, and the optical fiber sensor is connected to a multichannel acquisition port device arranged outside a foundation box in parallel; the multichannel acquisition port equipment is connected with the ODiSI distributed optical fiber sensing system through an acquisition data line on the adjustable foundation box by bolting through a screw, and the acquired foundation settlement data under different positions.