Adjustable sizing block supported by adjusting block and laminated rubber in parallel

Abstract

The invention discloses an adjustable sizing block supported by an adjusting block and laminated rubber in parallel. The adjustable sizing block comprises an upper supporting plate, the laminated rubber, a positioning device, a lower supporting plate, a sizing block base, a distance sensor, a sizing block adjusting block, an adjusting bolt and a servo driver; the laminated rubber is composed of protective layer rubber, sheet rubber and a steel plate, and the laminated rubber is installed on the plane of the sizing block base, pushed in a sliding groove and fixed through a bolt; and 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 a traditional sizing block method, the damping and rigidity of the system are improved through the laminated rubber, environment vibration can be effectively isolated, and meanwhile the parallel supporting has good bearing stability; the laminated rubber can be conveniently replaced as required by using a modular design under the condition that the sizing block is not moved out; the height of the sizing block is accurately measured in real time through an eddy current sensor, the height of the sizing block is accurately adjusted and controlled through the servo driver, repeated leveling is avoided, and therefore the leveling workload of a machine tool is greatly reduced.

Description

technical field [0001] The invention relates to a connecting piece between a numerical control machine tool and a foundation, and belongs to the field of precision improvement of a numerical control machine tool. Background technique [0002] CNC machine tools are the foundation of the development of modern high-tech industries, and play a key role in my country's energy, aerospace, large ships and other industries. With the higher and higher requirements for machining accuracy, the technology of CNC machine tools is developing in the direction of high precision and high reliability. However, CNC machine tools have a large scale, large load capacity, and complex vibration coupling, which requires sufficient bearing capacity and stability of the machine tool, and is also affected by environmental excitation. Rigidity decreases, while changing the position of the tool tip of the machine tool and the machined parts, reducing the machining accuracy of the parts. CNC machine to...

AI Technical Summary

Problems solved by technology

However, CNC machine tools have a large scale, large load capacity, and complex vibration coupling, which requires sufficient bearing capacity and stability of the machine tool, and is also affected by environmental excitation. Rigidity decreases, while changing the position of the tool tip of the machine tool and the machined parts, reducing the machining accuracy of the parts

CNC machine tools are generally installed on concrete foundations, and the machine tool and the foundation are connected by adjusting shim irons. There are two structural forms of adjusting shim irons. However, there are the following problems in use: (1) The rubber is mainly in the form of a single layer The flake form is stuck to the top or bottom of the pad iron, and the iron pad iron and rubber are connected in series, and there is a problem of lower overall stiffness; (2) The deformation of the pad iron under the gravity of the machine tool is mainly rubber deformation, and the creep of the rubber in the early stage of installation The phenomenon reduces the height of the shim iron, and a large adjustment is made after 14 days of installation; (3) The machine tool has multiple shim irons, and the leveling of the machine tool needs to be adjusted repeatedly with a level for each shim iron, and the adjustment amount depends on the experience of the engineer. Time-consuming and inaccurate

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