What is the reason for the abnormal accuracy of the gantry surface grinder

The main functions, structure, and composition of the gantry surface grinder are:

(1) The overall layout of the gantry surface grinder is a gantry type, with a rigid frame structure integrating the bed, columns, and beams (double-layer structure of the worktable). The structural design requirements ensure the accuracy and performance of the machine tool. The machine consists of a gantry frame, bed body, grinding head oil supply transmission system, worktable transmission lubrication system, cooling system, hydraulic control system, and electrical system.

(2) The worktable feed adopts hydraulic transmission, and the left and right up and down feed system of the grinding head adopts high-precision ball screw quenching. High wear-resistant flame guide rail.

Independent hydraulic station, running smoothly and reliably; Cantilever button station, easy to operate, user-friendly, and aesthetically pleasing.

(4) The balance cylinder with grinding head requires a reasonable spindle (dynamic pressure) structure, good rigidity, high precision, and high cutting speed.

(5) Original imported brands of electrical control equipment such as electrical components, programmable controllers, and frequency converters. In addition, you can also choose the simple CNC system developed by our company. Use numerical control programs. It also has functions such as alarm protection, over limit protection, feeder fault protection, feeder overload protection, etc. X/Y/Z axis automatic feeding speed regulation is required, which can achieve automatic cyclic grinding and intermittent feeding grinding.

However, gantry surface grinders often experience abnormal machining accuracy, which affects production. This type of fault has strong concealment and is difficult to diagnose. There are five main reasons for this malfunction:

(1) The feed unit of the machine tool undergoes changes or modifications.

(2) The zero bias of each axis of the machine tool is abnormal.

(3) Abnormal axial reverse clearance.

(4) Abnormal motor operation, i.e. electrical and control component failure.

(5) Mechanical failures such as screw rods, bearings, and shaft sleeves. In addition, the programming of machining programs, the selection of cutting tools, and human factors can all lead to abnormal machining accuracy.