How much do you know about the lathe machine structure?

Lathe machine has always played an important role in the machining industry and is an irreplaceable part of industrial manufacturing and processing. It has a long history of development. From the original manual lathes to automatic lathes, and then to CNC lathes and intelligent lathes, it has provided a great impetus to the development of industry.

 milling machine is the rotary motion of the milling cutter, and the motion of the workpiece is used as a feed motion. The structure of the lathe generally includes the bed, the spindle box, the feed box, the tool holder, the tailstock, the cooling device and so on.

In simple terms, a lathe is a machine tool that mainly uses a lathe tool to cut the rotating workpiece. It is different from the milling machine we often talk about. In general, the machining form of the lathe is the feed movement of the tool, and its main motion is the rotation movement of the workpiece. The mill machine is opposite to the lathe. The main motion of the

Bed: it is a basic part of a high precision guide. It is used to support and connect the various parts of the lathe, and to ensure that the parts have accurate relative position in the work.

Spindle box: the main task of the spindle box is to transmit the power from the main motor to a spindle through a series of transmission mechanisms, while the spindle box will transmit some power to the feed box. The spindle in the spindle box is the key part of the lathe. The smoothness of the spindle will directly affect the machining quality of the workpiece. Once the rotation precision of the spindle is reduced, the use value of the machine tool will be reduced.

Feed box: the feed box is equipped with a speed changing mechanism of feed motion. By adjusting the transmission mechanism, the required feed can be obtained, and then the power can be transmitted to the tool holder through the bare bar or screw to carry out the cutting.

Tool holder: the tool holder consists of slide plates, a bed saddle and a knife frame. It is used to install the cutter and drive the tool.

Tailstock: it can be mounted on the guide rail of the bed and move along the guide rail to adjust its working position.

Cooling device: the machine tool cooling device will press the cutting fluid to the cutting area, reduce the cutting temperature, sweep the chip and lubricate the surface, so as to improve the service life of the tool and the surface processing quality of the workpiece.

For example, the first two types of ordinary lathes are C616 and C6240. There is a great difference between the two machine tools in the transmission mechanism. The two types of lathes are the representatives of two different kinds of lathes.

The C616 lathe transfers the mechanical power to the spindle box by the independent gearbox of the machine tool. Its advantage is that the operation is flexible and convenient, and the maintenance is very simple. But many years' experience tells me that it has a biggest drawback, that is, the lathe with this structure needs repeated positive and negative two directions speed changes when machining threads, resulting in the gearbox being easily damaged. The main reason for the damage of the gearbox is that in the direction of changing the speed, the gearbox does not have a buffer structure to damage the gear easily. And this kind of structural design will often leak oil, this problem has troubled engineers for many years.

The C6240 lathe has no independent gearbox. It combines the gearbox and the spindle box effectively, so the problem that the gearbox is easy to damage is solved. At present, the lathe machine with independent gearbox has been gradually eliminated.

Now CNC technology is also widely used in the field of lathe, resulting in a series of high precision and efficient CNC lathe products, making production and processing more convenient and convenient, and further promoting the development of machinery manufacturing industry.

How to choose the most suitable machine tools for household use?

Many mechanical engineers and mechanical enthusiasts like to redress and repair some mechanical products at home or make some very clever works. This not only brings convenience to life, but also brings some fun. To achieve specific processing needs, as one of the basic tools for mechanical processing, machine tools are essential. How to choose a machine tool suitable for household use has become a more difficult problem. But you do not have to worry, DXMC professional milling machine supplier gives you some advice for your reference.

The choice of the household machine tool and the industrial machine tool is not the same, and can be analyzed from the following aspects.

1. production

2. scale

3. machine tool performance

4. use environment

From a production point of view, home processing more is a single piece or a small amount of workpiece processing, production is small, and the production of the workpiece is very large in the process of industrial processing.

From a scale point of view, the number of machine tools owned by mechanical enthusiasts is small, while industrial processing is larger and uses more machines. So as to achieve high efficiency.

In terms of performance, the power of the household machine is small and the precision is not high. The working voltage of the machine tool is civil voltage, and there is no need to set up a special power supply. Because it is generally not possible to purchase special machine tools for each processing demand. This requires that the household machine tool equipment is versatile and can be equipped with a variety of accessories to achieve more diverse processing needs.

In terms of the use environment, the household machine tools will choose to use in the garage or the basement. Therefore, the size of the machine tool should not be too large and the weight should not be too heavy by the space limit.

In addition, household machines need simple structure, reliable quality, easy maintenance and long service life. If the machine tool structure is complex and the maintenance needs strong technical support, it will be very inconvenient for the family users.

The drilling and milling machine ZX6350C and the small milling machine DM100 produced by our company meet these requirements very well. ZX6350C drilling milling machine is a cutting machine with small size and light weight. It has two kinds of machining methods, vertical milling and horizontal milling. The vertical milling head can rotate about 90 degrees. It can be used for drilling, milling, tapping and other processing of metal and other materials. Its accessories have greatly expanded its scope of use, such as rotary table, universal indexing head, digital display equipment and so on.

DM100 is a mini type vertical milling machine designed for home use. Its worktable is small in size and small in area, so it is very suitable for use in a relatively small space. It has a simple structure but has a good processing precision and is convenient for maintenance. A variety of accessories can be used to meet a variety of processing requirements. In addition, the price of this type of milling machine is low, which is very suitable for users with less budget.

In addition to the above two kinds of milling machine equipment, there are a variety of small and multi-functional lathes for choice. https://www.cndxmc.com/bench-lathe-machine/ As shown in the picture, the lathe equipment, which uses family voltage, can realize many kinds of machining functions, such as turning, drilling, and so on. It is also more common in the market.

To sum up, the household machine tool equipment needs small size, comprehensive function, lower precision requirements, simple structure, reliable quality and convenient maintenance. Grasp the characteristics of the machine tools we analyze for you, we believe you will be able to choose satisfactory home machine tools. If you are interested in the machine tools we mentioned, please contact us. Thank you for your attention!

Spindle taper, you should know when choosing a universal milling machine!

When choosing a universal milling machine, three of the most important machine parameters must be carefully confirmed, including the spindle taper, the worktable size and the worktable travel. Because these three parameters directly determine whether the milling machine you buy can meet the needs of your use. But for the parameters of the spindle taper, many people, especially those who have just entered the machine tool industry, will feel more strange. Now let's just analyze it.

First of all we have to understand what is taper. By definition, taper refers to the ratio of the diameter of the underside of the cone to the height of the cone; in the case of a truncated cone, the ratio of the diameter difference of the upper and lower circles to the height of the truncated cone.

People who are engaged in machine tool industry often talk about NT40, R8, ISO40, ISO50 and other words when talking about machine tools. Yes, these are the taper of the spindle of a machine tool. There are so many different expressions, because the taper standards used by different machine tools are different, so the way of naming is different. In practice, there are many kinds of specifications for machine tool taper, and specifications are varied. Here we cannot elaborate one by one. If interested, you can access a standard data. Now let's talk about common taper standards.

The common taper of all kinds of machine tool products: Morse taper (MT), R8, ISO (7:24), BT30, BT40, BT50 and so on. The taper of the machine tool under a specific standard is determined mainly according to the function and performance of the machine tool.

The Morse taper was invented in nineteenth Century by an American mechanic Stephen A. Morse to solve the problem of the clamping of the twist drill. It was later popularized as a American Standard and gradually developed into one of the global standards. The taper has seven models with 0, 1, 2, 3, 4, 5, 6. The taper value has a certain change. The taper is also divided into a long cone and a short cone. The long cone is used in the spindle hole of the active machine tool, and the short cone is used for the machine tool accessories. The taper is mainly used in drilling machine and lathe. Because of the long length of the taper and the good orientation of the axis, it is very suitable for the use of bore holes and reaming holes.

ISO (7:24) is an international standard. Although the guide length is shorter, but the taper hole area is large, very suitable for milling. So it is widely used in milling machines, such as universal milling machine, vertical milling machine and so on. When buying universal milling machines, usually according to the power of the milling machine to choose a different cone, such as ISO30, ISO40, ISO50 milling machine. Small power milling machines need to be equipped with smaller tapered bore, while larger power milling machines are equipped with larger tapered bore.

BT is a Japanese standard, with a taper at 7:24. BT40 and BT50 are mostly used on CNC machine tools. Because the CNC machine tool products need to achieve automatic tool change, so the spindle taper is required to be accurate and easier to fall off when the knife is changed. The BT taper can be considered to be produced by removing the tail on the basis of the ISO taper. It is more convenient and quicker when changing the knife.

When the metal processing universal milling machine is finished, the taper of the spindle can not be changed easily. Therefore, only to determine the use of demand, and then use the demand to determine the need for milling spindle taper, as an important reference to buy milling machine, which is the right approach.

Christmas is coming!

DXMC send the best wishes to all the customers and partners. Merry Christmas!
We are doing a Christmas sales promotion. Friends who are planning to buy 
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5 tips for purchasing universal milling machines!

Many users do not know how to choose the universal milling machine they need correctly. Today we will talk about how to choose to the suitable milling machine. Before choosing, the following factors need to be considered:

1. Uses and functions

2. Using field

3. Budget

4 .Production

5. Development

Let's analyze these factors one by one.

1. Uses and functions

There are many types of milling machines, such as vertical milling machine, horizontal milling machine, bed type milling machine, profiling milling machine, universal milling machine, drilling and milling machine, CNC milling machine, gantry milling machine, etc.. Different milling machines have different uses.

For example, a metal processing vertical milling machine is suitable for machining flat, keyway, dovetail groove, bevel and some irregular workpieces, because its spindle is perpendicular to the worktable. Vertical mill machine is widely used in manufacturing factories, mines, workpiece processing and other fields.

Horizontal milling machine is also suitable for factories and professional businesses. Its spindle is horizontal, suitable for machining the side of the workpiece, as well as the use of horizontal milling cutter milling straight slot.

Profiling milling machines are designed primarily for the complex workpiece and special-shaped workpiece, so they can work on workpieces that can not be machined by conventional milling machines. These machines are usually based on the workpiece to be selected.

Universal milling machines usually have vertical milling and horizontal milling two functions, and universal milling head can rotate 360°. It can be suitable for a variety of processing occasions, more flexible and convenient.

2. Using field

Some clients use limited space for machines. In selecting the milling machine, whether the size of the machine and the future maintenance is convenient should also be considered. If the workshop is very small, or in the ship, family basement and other places to use, it will bring some trouble to the installation, use and debugging. When the machine tool is used normally, the space occupation is small, but the space needed for installation and maintenance is very large. Therefore, the customer must communicate with the universal milling machine tool manufacturer, and more consultation before purchase.

3. Budget

Budget is also considered when purchasing equipment. Some enterprises will consider buying some high-end machine tools because of sufficient funds. And some companies with insufficient budget can choose some medium and low grade machine tools according to their own product requirements, and the quality of machine tools produced by these small and medium-sized manufacturers can meet the needs. The management cost of large enterprises is three to five times that of small and micro enterprises. The management cost of small and medium-sized manufacturers is not high, so the machine will be more cost-effective than some large enterprises.

4. Production

Product output is a very important factor to consider when selecting machine tools. If you need to process a large amount of workpiece, you must choose a higher degree of automation, good quality mill machine. In addition, whether the after-sales service is perfect also need to consider.

Although the milling machine with higher automation degree has higher price, it is three to five times more efficient than ordinary machine tools in use. Because of the high output, the equipment will be used for a long time. Ordinary machine tools can be used continuously for 16 hours, and some high-quality equipment can be used continuously for 20 hours or even 24 hours.

5. Development

Short term use and long term use are often considered when purchasing machine equipment. Some enterprises only purchase equipment for a batch of orders, and they will sell machines after processing. In this case, special machine tools and single function machine tools are usually chosen. If there is a long-term use plan, it is necessary to consider the stability of the equipment and the comprehensiveness of the function.

Through the comprehensive evaluation of the above points, DXMC believes that it can provide you with a lot of valuable reference to purchase universal milling machine equipment, so that your procurement can be more reasonable, more economical and more effective.

Equipment management of CNC universal milling machine

Equipment management of CNC universal milling machine is a systematic project, and should be based on the company’s production development and business objectives, through a series of technical, economic, organizational measures and scientific methods to carry out. In the specific use of equipment management, depending on the enterprise to buy and use CNC universal milling machine, select the following stages.

①In the early use of CNC universal milling machine, there is no mature management methods and the use of equipment experience, programming, operation and maintenance personnel are more unfamiliar. In this case, the CNC universal milling machine is generally placed under the production workshop management, focusing on training several technical staff to learn manual programming, automatic programming and maintenance techniques, and then teach the operator, and for a long time to allow technicians and operate workers as top class operation. Select the typical key parts of the enterprise, the preparation process, select the tool, determine the fixture and preparation procedures and other technical preparations.

②In the grasp of a certain application of technology and a certain number of  milling machines, these devices can be used professional management, centralized use of the method. Process technology preparation by the process sector is responsible for the production management by the factory unified balance and scheduling, CNC equipment concentrated in the CNC workshop.

③CNC machine tools and the number of more types of auxiliary facilities are relatively complete, relatively mature application technology, programming, operation and maintenance of the technical team is relatively strong, can be equipped with CNC machine tools in the appropriate general machine, the CNC workshop expanded into closed independent workshop, with the ability to independently produce a complete product. If necessary, equipment and tools can be achieved computer management, universal milling machine to start a higher rate of technical and economic benefits are better.

Whichever stage is used, equipment management must establish rules and regulations. Such as the establishment of fixed, fixed machine, fixed post system, job training, prohibition of undocumented operation. According to the characteristics of the equipment, the development of the operation and maintenance of safety procedures. In the equipment maintenance, to strictly enforce the record, that is, for each maintenance are doing the relevant records. The fault repair to do a good job on the fault records and instructions, and equipment maintenance and repair for all kinds of commonly used spare parts. Do the equipment technical information on the lend, custody, registration work.

Milling machine CNC system hardware

From the hardware point of view, milling machine CNC system is divided into single microprocessor numerical control system and multi microprocessor numerical control system.

1. Single microprocessor numerical control system

In a single microprocessor numerical control system, the whole system has only one CPU, it uses centralized control, time-sharing way to control. Single microprocessor numerical control system of the main features of the performance: CPU time-sharing control. CPU through the address, data and control of the three major bus connected to the control unit and the exchange of information.

2. Multi-microprocessor numerical control system

Multi-microcomputer numerical control system will control the task is divided into various modules, each module by a separate microprocessor to control. The system through the coordination of the various modules to complete the control of the milling machine. Compared with the single microprocessor numerical control system, the operation speed of the multi-microprocessor numerical control system has been greatly improved.

Multi-microprocessor functional modules include:

1) management module. Used to manage and organize the entire milling machine CNC system work.

2) interpolation module. Mainly to complete the pre-processing before interpolation.

3) position control module. Used to compare the position setpoint with the actual value of the position, and adjust the output speed command to drive the milling machine feed motor.

4) memory module. The memory module is the main memory of the program and data, or the shared memory for data transfer between the functional modules.

5) PLC function module. It is part of the program in the switch function and the milling machine to the logic of the signal processing, to achieve the machine electrical equipment switching control.

6) operation panel and display module. This module includes part program, parameters and data, various operation commands input/output and display the various interface circuits required.

In the CNC system of multi microprocessor, the communication and communication between modules are mainly composed of shared bus and shared memory, two kinds of structure. In the shared bus architecture, each function module is plugged into a chassis with a bus socket, and the modules are effectively connected together by the milling machine system bus. In the shared memory architecture, each module exchanges information with the common memory, and the public memory is directly attached to the system bus, and each module can access the information.