本文针对湖南辰州矿业股份有限责任公司（以下简称“湖南辰州矿业”）在普通

This article is aimed at Hunan Chenzhou Mining Co., Ltd. (hereinafter referred to as "Hunan Chenzhou Mining") when machining the end faces and center holes of shaft parts on ordinary lathes, there are low production efficiency, poor hole depth size uniformity, and requirements for the technical level of workers. These three problems are higher, after the technical transformation of the company’s ordinary lathe mechanical transmission device and electrical automatic control system: that is, only the main transmission system of the original machine tool (the front end is connected to the center hole drill) is added, and a set of milling cutter shaft structure is added. Gear meshing transmits the movement of the main shaft to the milling cutter to realize the simultaneous rotation of the two tools (main movement); at the same time, the company’s machinery manufacturing department scientifically uses PLC to control two stepping motors to drive the workpiece to achieve double-station advancement, and one idle The old ordinary lathe was converted into a special machine tool for CNC machining of end faces and center holes. The modified machine tool has improved the processing accuracy and automation of the parts, and has greatly improved the production efficiency. It has small investment, quick results, less modification workload, short production and debugging cycle, high utilization rate of old equipment, and future It is easier to restore the original working performance and other characteristics of the machine tool without processing such parts, which has a certain degree of reality for the processing of the production enterprises of Hunan Chenzhou Mining. <br>Keywords: Chenzhou mining enterprise; machine tool modification; PLC lathe; automatic control system

This paper aims at Hunan Chenzhou Mining Co., Ltd. (hereinafter referred to as "Hunan Chenzhou Mining") in the ordinary lathe processing shaft parts of the end face and center hole when there are low production efficiency, poor hole depth size homogeneity, requiring workers to have a higher level of technology, after the company's ordinary lathe mechanical transmission and electrical automatic control system technical transformation: that is, only retain the main drive system of the original machine tool (front end connection center hole drill), add a mill shaft structure. The motion of the spindle is transferred to the mill by gear meshing, and two tools are rotated at the same time (main motion), while the company's mechanical manufacturing department scientifically uses PLC to control two stepper motor drive workpieces to achieve duplex propulsion, and to convert an idle old ordinary lathe into a CNC machining end face and a special machine tool for the center hole. The modified machine tool improves the processing precision and automation degree of the part, makes the production efficiency has been greatly improved, has the characteristics of small investment, quick results, less modification workload, short production and commissioning cycle, high utilization rate of old equipment, and will not process such parts in the future can be easier to restore the original working performance of the machine tool and so on, the processing of the mining enterprises in Chenzhou, Hunan Province has a certain reality.<br>Keywords: Chenzhou mining enterprises; machine tool modification; PLC lathes; automatic control system

In this paper, Hunan Chenzhou Mining Co., Ltd. (hereinafter referred to as "Hunan Chenzhou Mining") has three problems: low production efficiency, poor uniformity of hole depth and size, and high technical level of workers when processing end face and central hole of shaft parts on ordinary lathe That is to say, only the main transmission system of the original machine tool (the front end is connected with the center hole drill bit) is retained, a set of milling cutter shaft structure is added, and the motion of the main shaft is transmitted to the milling cutter through gear meshing, so as to realize the simultaneous rotation of two cutters (main body motion); at the same time, the mechanical manufacturing department of the company scientifically uses PLC to control two stepping motors to drive the workpiece, so as to realize double position propulsion, and refit an idle old ordinary lathe It is a special machine tool for NC machining end face and center hole. The refitted machine tool improves the machining accuracy and automation degree of parts, and greatly improves the production efficiency. It has the characteristics of small investment, quick effect, less refitting workload, short production and debugging cycle, high utilization rate of old equipment, and it is easier to restore the original working performance of the machine tool when such parts are not processed in the future There is a certain reality.<br>Key words: Chenzhou Mining Enterprise; machine tool refitting; PLC lathe; automatic control system<br>