阅读说明：本技术 一种调整块与叠层橡胶并联支撑的可调式垫铁 (Adjustable sizing block with adjusting block and laminated rubber supported in parallel ) 是由 苏贺旺 刘志峰 姜凯 张建涛 李彦生 于 2021-08-01 设计创作，主要内容包括：本发明公开了一种调整块与叠层橡胶并联支撑的可调式垫铁,包括上支板、叠层橡胶、定位装置、下支板、垫铁底座、距离传感器、垫铁调整块、调整螺栓和伺服驱动器；叠层橡胶由保护层橡胶、片状橡胶和钢板组成,叠层橡胶安装在垫铁底座的平面上,从滑槽内推进,并用螺栓固定；距离传感器设置在垫铁调整块侧面,伺服驱动器与调整螺栓连接。与传统的垫铁法相比,使用叠层橡胶提高了系统的阻尼和刚度,能够有效隔绝环境振动,同时并联式支撑具有良好的承载稳定性；使用模块化设计在不移出垫铁的情况下,根据需要方便更换叠层橡胶；采用电涡流传感器实时准确测量垫铁高度,伺服驱动器精准调控垫铁高度,避免了反复调平从而大大减少机床调平的工作量。(The invention discloses an adjustable sizing block with an adjusting block and laminated rubber supported in parallel, which comprises an upper support plate, laminated rubber, a positioning device, a lower support plate, a sizing block base, a distance sensor, a sizing block adjusting block, an adjusting bolt and a servo driver, wherein the upper support plate is provided with a positioning device; the laminated rubber consists of protective layer rubber, sheet rubber and a steel plate, is arranged on the plane of the sizing block base, is pushed from the inside of the chute and is fixed by a bolt; the distance sensor is arranged on the side face of the sizing block adjusting block, and the servo driver is connected with the adjusting bolt. Compared with the traditional sizing block method, the laminated rubber is used to improve the damping and rigidity of the system, so that the environmental vibration can be effectively isolated, and meanwhile, the parallel support has good bearing stability; the laminated rubber is conveniently replaced according to the requirement by using a modular design under the condition that the sizing block is not removed; the eddy current sensor is adopted to accurately measure the height of the sizing block in real time, and the servo driver accurately regulates and controls the height of the sizing block, so that repeated leveling is avoided, and the leveling workload of the machine tool is greatly reduced.)

1. The utility model provides an adjustable paralleling of adjusting block and stromatolite rubber support which characterized in that: the device comprises three units, namely a laminated rubber damping unit, an adjusting sizing block unit improved based on two layers of damping sizing blocks, and a height monitoring and adjusting unit.

The laminated rubber of the laminated rubber damping unit is formed by laminating sheet rubber and a steel plate layer by layer and tightly adhering the laminated rubber with glue, and the outer layer of the laminated rubber damping unit is wrapped by special protective layer rubber. The laminated rubber, the upper support plate and the lower support plate are integrally connected by glue to form a rubber damping unit; the two sides of the sizing block base are of inclined plane structures, the middle of the sizing block base is of a plane groove structure, and a rubber damping unit is arranged on the plane groove structure; a groove is arranged on the side wall of the plane groove structure and is tightly attached to the lower support plate protrusion of the laminated rubber; the lower support plate and the sizing block base are provided with threaded holes, and the lower support plate and the sizing block base are fixed through positioning devices. The inclined planes on the two sides of the sizing block base are provided with sizing block adjusting blocks; the adjusting bolt is connected with the end part of the sizing block adjusting block through threads, and the sizing block adjusting block is driven to slide on the inclined plane of the sizing block base by rotating the adjusting bolt, so that the height of the sizing block adjusting block on the sizing block base can be changed; the distance sensor is arranged on the side surface of the sizing block adjusting block; the servo driver is connected with the adjusting bolt.

2. The adjustable sizing block with the adjusting block and the laminated rubber supported in parallel as claimed in claim 1, wherein: the distance between the sizing block base and the side baffle of the adjusting bolt is measured, the height of the sizing block base is determined in real time according to the conversion of a right triangle, and the height is enlarged into the horizontal length which is easier to measure through a slope.

3. The adjustable sizing block with the adjusting block and the laminated rubber supported in parallel as claimed in claim 1, wherein: and rotating the adjusting bolt by a corresponding angle according to the data of the distance sensor, and adjusting the height of the sizing block to realize closed-loop adjustment of machine tool leveling.

4. The adjustable sizing block with the adjusting block and the laminated rubber supported in parallel as claimed in claim 1, wherein: when the rubber vibration damping device is installed, the adjusting bolt is rotated to reduce the height of the adjusting block to be lower than that of the upper support plate, the sizing block is pressed on the upper support plate when being installed, the weight of a machine tool is borne by the laminated rubber, the laminated rubber is forced to deform slightly by the gravity pressure of the machine tool, and the rubber storing certain energy can play a role in damping vibration; after the rubber deformation area tends to be stable after 14 days of installation, the adjusting bolt is rotated to enable the adjusting sizing block to be lifted until the adjusting sizing block is abutted to the lower surface of the machine tool body, at the moment, the laminated rubber and the adjusting block bear the weight of the machine tool together, and due to the stopping effect of the adjusting block with higher rigidity, the phenomenon that the amplitude generated by the machine tool is too large or the height of the sizing block is too much reduced along with time is prevented; when the height of the sizing block is adjusted, the adjusting bolt is rotated to change the height of the sizing block adjusting block, the rubber adjusting unit is in an elastic deformation stage, and the rubber adjusting unit is adaptive so that the rubber adjusting unit and the sizing block adjusting block with the changed height are at the same height, and therefore the height of the sizing block is adjusted; when the laminated rubber needs to be replaced after long-time use, the height of the adjusting block is lifted only by rotating the adjusting bolt until the machine tool is only borne by the adjusting block, the positioning device is screwed out, and the laminated rubber is taken out and replaced; and setting the inclination angle of the inclined plane of the sizing block as alpha, and setting the initial distance between the distance sensor and the baffle plate of the base of the sizing block as L, wherein the initial height of the sizing block is Ltan alpha and is used as the basis for adjusting the servo driver.

Technical Field

The invention relates to a connecting piece of a numerical control machine tool and a foundation, and belongs to the field of precision improvement of numerical control machine tools.

Background

The numerical control machine tool is the basis of the development of modern high and new technology industry and plays a key role in the industries of energy, aerospace, large ships and warships and the like in China. With the increasing requirements for machining precision, the technology of numerical control machine tools is developing towards high precision and high reliability. However, the numerical control machine tool is large in size, large in bearing capacity and complex in vibration coupling, needs sufficient bearing capacity and machine tool stability, and is influenced by environmental excitation, the rigidity of a machine tool joint surface can be damaged under the action of the environmental excitation, the overall rigidity of the machine tool is reduced, the positions of a tool tip point and a machined part of the machine tool are changed, and the machining precision of the part is reduced. The numerical control machine tool is generally installed on a concrete foundation, the machine tool is connected with the foundation through an adjusting sizing block, the adjusting sizing block has two-layer and three-layer structural forms, and the following problems exist in the use process: (1) the rubber is mainly adhered to the top or the bottom of the sizing block in a single-layer sheet form, and the iron sizing block and the rubber are connected in series to cause the problem of reduced integral rigidity; (2) the deformation of the sizing block under the action of the gravity of the machine tool is mainly the deformation of rubber, the creep phenomenon of the rubber at the early stage of installation reduces the height of the sizing block, and the sizing block is greatly adjusted after 14 days of installation; (3) the machine tool is provided with a plurality of sizing blocks, the leveling of the machine tool needs to be repeatedly adjusted by a level gauge for each sizing block, the adjustment amount depends on the experience of engineering personnel, and the machine tool is time-consuming, labor-consuming and inaccurate. Therefore, there is a need to design a new type of shim for a numerical control machine tool that overcomes these disadvantages.

Disclosure of Invention

The invention supports the laminated rubber and the sizing block in parallel, the rigidity and the damping of the laminated rubber are greatly improved compared with those of single-layer rubber, the parallel design has enough rigidity and isolates the environmental vibration, and the micro inclination of a lathe bed caused by the deformation of the sizing block is reduced; an eddy current sensor is arranged on the sizing block, and height data of the sizing block is detected in real time and fed back to the servo adjuster, so that the height of the sizing block is accurately adjusted, and closed-loop adjustment of the levelness of the machine tool body is realized.

The invention is realized by the following technical means:

an adjustable sizing block supported in parallel with laminated rubber, comprising: the device comprises an upper support plate 1, laminated rubber 2, a positioning device 3, a lower support plate 4, a sizing block base 5, a distance sensor 6, a sizing block adjusting block 7, an adjusting bolt 8 and a servo driver 9.

The sizing block device mainly comprises three units, namely a laminated rubber damping unit, an adjusting sizing block unit improved based on the traditional two layers of damping sizing blocks, and a height monitoring and adjusting unit. The laminated rubber 2 is formed by laminating the flaky rubber 2-2 and the steel plate 2-3 layer by layer and tightly adhering the laminated rubber with glue, and the outer layer is wrapped by the special protective layer rubber 2-1 to prevent air oxidation, oil stain dip-dyeing and the like and protect the normal use of the rubber in special environments. The laminated rubber 2, the upper support plate 1 and the lower support plate 4 are integrally connected by gluing to form a rubber damping unit; the two sides of the sizing block base 5 are of inclined plane structures, the middle of the sizing block base is of a plane groove structure, and a rubber damping unit is arranged on the plane groove structure; a groove is arranged on the side wall of the plane groove structure and is tightly attached to the protrusion of the lower support plate 4 of the laminated rubber 2, so that the rubber damping unit is prevented from vertical displacement; the lower support plate 4 and the sizing block base 5 are provided with threaded holes, the lower support plate 4 and the sizing block base 5 are fixed through the positioning device 3, and the rubber damping unit is prevented from horizontally moving. The inclined planes on the two sides of the sizing block base 5 are provided with sizing block adjusting blocks 7; the adjusting bolt 8 is connected with the end part of the sizing block adjusting block 7 through threads, and the sizing block adjusting block 7 is driven to slide on the inclined plane of the sizing block base 5 by rotating the adjusting bolt 8, so that the height of the sizing block adjusting block 7 on the sizing block base 5 can be changed; the distance sensor 6 is arranged on the side face of the sizing block adjusting block 7, the distance between the sizing block base 5 and the side baffle of the adjusting bolt 8 is measured, the height of the sizing block base 5 is determined in real time through conversion according to a right triangle, and the height is amplified into a horizontal length which is easier to measure through a slope; the servo driver is connected with the adjusting bolt, so that manual adjustment errors are prevented, the adjusting bolt is rotated by a corresponding angle according to data of the distance sensor, the height of the sizing block is accurately adjusted, and closed-loop adjustment of machine tool leveling can be realized.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a cross-sectional view of a laminated rubber of the present invention.

The device comprises an upper support plate 1, laminated rubber 2 (a protective layer rubber 2-1, a sheet rubber 2-2 and a steel plate 2-3), a positioning device 3, a lower support plate 4, a sizing block 5, a distance sensor 6, a sizing block 7, an adjusting bolt 8 and a servo driver 9.

Detailed Description

When the adjustable vibration damping device is installed, (1) the adjusting bolt is rotated to reduce the height of the adjusting block to be lower than that of the upper support plate, the sizing block is firstly pressed on the upper support plate when being installed, the weight of a machine tool is borne by the laminated rubber, the laminated rubber is forced to generate smaller deformation by the gravity pressure of the machine tool, and the rubber storing certain energy can play a role in damping vibration; (2) after the rubber deformation area tends to be stable after 14 days of installation, the adjusting bolt is rotated to enable the adjusting sizing block to be lifted until the adjusting sizing block is abutted to the lower surface of the machine tool body, at the moment, the laminated rubber and the adjusting block bear the weight of the machine tool together, and due to the stopping effect of the adjusting block with higher rigidity, the phenomenon that the amplitude generated by the machine tool is too large or the height of the sizing block is too much reduced along with time can be prevented; (3) when the height of the sizing block is adjusted, the adjusting bolt is rotated to change the height of the sizing block adjusting block, the rubber adjusting unit is in an elastic deformation stage, and the rubber adjusting unit can be adaptive so as to be at the same height as the sizing block adjusting block with the changed height, thereby realizing the adjustment of the height of the sizing block; (4) when the laminated rubber needs to be replaced after long-time use, the height of the adjusting block is lifted only by rotating the adjusting bolt until the machine tool is only borne by the adjusting block, the positioning device is screwed out, the laminated rubber is taken out and replaced, and the steps are repeated; (5) and setting the inclination angle of the inclined plane of the sizing block as alpha, and setting the initial distance between the distance sensor and the baffle plate of the base of the sizing block as L, wherein the initial height of the sizing block is Ltan alpha and is used as the basis for adjusting the servo driver.

By adopting the design scheme, the device has the advantages that:

(1) the high-damping laminated rubber is adopted, so that the environmental vibration can be effectively attenuated, and the influence of the vibration on the machining precision of a machine tool is prevented;

(2) the laminated rubber and the adjusting block are supported in parallel, so that the supporting rigidity and the damping of the sizing block are improved, the height reduction of the sizing block is reduced after the sizing block is used for a long time, the bearing stability is improved, and the machine tool body is prevented from inclining;

(3) the modular design is adopted, the laminated rubber vibration isolation unit can be conveniently replaced according to requirements, and the sizing block does not need to be taken out in the replacement process;

(4) the height of the sizing block is accurately detected in real time by adopting a distance sensor, and the height of the sizing block is accurately regulated and controlled by a servo driver, so that repeated leveling is avoided, and the leveling workload of the machine tool is greatly reduced.