What can a milling machine do?
Milling machine is a kind of widely used machine tool, milling machine can process plane (horizontal plane, vertical plane), groove (keyway, T groove, dovetail groove, etc.), tooth parts (gear, spline shaft, sprocket), spiral surface (thread, spiral groove) and various surfaces. In addition, it can also be used for machining and cutting off the surface and inner hole of the rotary body. Milling machine with horizontal milling machine or vertical milling machine, there are large gantry milling machine. These machine tools can be ordinary machine tools, or CNC machine tools. The use of rotary milling cutter as a cutting tool for cutting, the efficiency is very high. When working, the tool rotates (as the main motion) and the workpiece moves (as the feed motion). The workpiece can also be fixed, but at this time the rotating tool must also move (complete the main motion and feed motion at the same time).
What are the characteristics of large vertical milling machines?
- The spindle vertical layout, the table can be up and down, vertical milling machine with a relatively flexible milling cutter, a wide range of application.
- The milling head of vertical milling machine can be adjusted ±45° in the vertical plane along and counterclockwise; Vertical milling machine X, Y, Z three direction motor feed;
- The spindle of vertical milling machine adopts energy consumption brake, brake torque is large, stop quickly, reliable.
- The main components are made of high strength materials, and the artificial aging treatment, to ensure the long-term stability of the machine tool.
- Table X/Y/Z direction has manual feed, motor feed and motor fast feed three, feed speed can meet different processing requirements; Fast feed can make the workpiece quickly to the processing position, processing is convenient, fast, shorten the non-processing time.
- with lubrication device, can be X, Y, Z three directions of the screw and guide rail lubrication, reduce the wear of the vertical milling machine. Prolong the service life of machine
- The cooling system adjusts the nozzle to change the size of coolant flow to meet different processing needs.
- The large vertical milling machine has the advantages of simple structure, humanized design and convenient operation.
What is the cutting depth of the milling cutter on the large vertical milling machine?
Milling cutter milling depth can be large, can also be small, there is no standard. The depth of milling, the speed of the knife will be low down, the depth of milling is small, the speed of the knife will be up. You can eat twenty, thirty millimeters at a time, or even deeper. But the speed of the knife must come down, otherwise it is easy to hit the knife. In addition, the depth of cutting and processing material strength, hardness, strength, high hardness of the material, cutting depth can not be large, otherwise the tool will not bear. The depth of the milling is also related to the width of the milling. The width of the milling is small, and the depth of the milling, even if large, will not cause damage to the tool. For example, the spiral cutting edge end face of the end milling cutter, the width of the cutter is very small, the depth of the cutter is very large, and the cutter has no problem. In addition, but also the power of milling machine, process system stiffness and strength, milling machine power, stiffness, strength is insufficient, the depth of milling can not be too large. In general, high speed steel milling cutter milling soft steel, milling width is less than 5mm, milling depth is less than 5mm, fine milling, milling depth 0.5~1mm. Medium hard steel less than 4mm, hard steel less than 3mm. Milling machine spindle speed and the amount of cutting is proportional, because when the speed is high, the amount of cutting is relatively slow, so that the surface finish is high. Only in order to ensure the high speed and high efficiency of the milling machine, but also to ensure that the quality of the tool is very high, milling machine speed and the proportion of the amount of cutting will be relatively small.
What is automatic tool feeding on milling machine?
In the process of milling, the traditional milling machine adopts manual feed, and then adds the mechanical tool feeder, but the mechanical tool feeder has high processing technology requirements, high cost and troublesome operation; Therefore, an electronic tool feeder appeared later. This tool feeder is regulated by DC motor, and its structure is also deficient. First, the gear is easy to have problems, and second, the carbon brush is easy to have problems; Now there is a maintenance free tool feeder, which is driven by servo motor and combines machine with electricity to realize low-speed high torque cutting and fast high-speed movement. Under the control of single chip microcomputer, the motor is free from pre maintenance. The power feeder of milling machine adopts independent power supply mode to provide workbench feed power for milling machine and other equipment, so as to replace the traditional milling machine feed gearbox system. The product is mainly used for the working movement of the milling machine workbench in the X, y and Z coordinate directions to realize forward and reverse commutation and stepless speed regulation. It can completely replace the traditional gearbox speed change mechanism. It is a revolutionary innovation in the development of milling machine from integral type to discrete unit. The power feeder of milling machine has the characteristics of low noise, large torque, high speed, convenient installation, flexible operation and beautiful appearance, which meets the requirements of ergonomics. It is installed on the machine tool to provide stable power for the machine tool and greatly improve the work efficiency.
Why can’t the automatic tool feeder complete automatic feeding?
- There is a problem with the automatic tool feeder itself: the original name of the tool feeder is gearbox. If the automatic feeding cannot be completed, first check whether the gear in the gearbox emits a noise different from that during normal machine operation. If there is a different noise than usual, it means that there is a problem with the gear inside. At this time, we need to check the gear and replace it with a new one.
- The problem of lead screw connection. We just need to check the connection of lead screw and connect it in the correct way.
- There is a problem with the motor. A special motor is connected to the gearbox (tool feeder). We need to check whether the speed and power on of the motor are abnormal. In case of any abnormality, contact the manufacturer for maintenance.