MFG News – Page 2 – Cnc Machining Vip

Speed regulation method of CNC lathe machining spindle

5 Axis Machining News micohuang · 2021-07-10 · comments off

In order to meet the requirements of the main transmission of CNC lathe processing, CNC machine tools (attribute: automated machine tools) often use a motor stepless speed regulation system. In… Read more

What are the main components of CNC machine tools?

5 Axis Machining News micohuang · 2021-07-10 · comments off

Modern CNC machine tools are all CNC machine tools, which are generally composed of a CNC operating system and a machine tool body. The equipment is specially used to process… Read more

Advantages of CNC machine tool processing

Cnc Turning News micohuang · 2021-07-10 · comments off

CNC machine tool (attribute: automated machine tool) processing is a high-precision, high-efficiency (automated machine tool). The use of CNC machine tool processing can improve processing benefits, create more value, and… Read more

Process Analysis of NC Machining Parts Drawing

5 Axis Machining News micohuang · 2021-07-10 · comments off

(1) The method of dimensioning in the drawings of CNC machining parts The size on the part drawing is an important basis for manufacturing and inspecting parts. In the production… Read more

Elimination of Gear Backlash in CNC Machining Feed System

Cnc Turning News micohuang · 2021-07-10 · comments off

The transmission gear in the feed system of the CNC machining machine tool must eliminate the transmission gap between the meshing gears as much as possible, otherwise the movement will… Read more

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state. CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various movements that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. According to different load requirements, the static pressure guide rails of CNC machining lathes are divided into two types: open type and closed type. The open hydrostatic guide rail can only bear the load in the vertical direction, and the ability to withstand the subversion moment is poor; the closed hydrostatic guide rail has the ability to withstand all aspects of the load and the subversion moment. The sliding rail (TTW guide) of the hydrostatic slide rail (TTW guide) is in a pure liquid friction state, so there is no wear (a basic type of component failure), precision (precision) retention, and life ( Long lifetime), and the friction coefficient of the slide rail (TTW guide) is small (typically 0.0005 to 0.001), and the mechanical efficiency (efficiency) is high, which can maintain the guiding accuracy (precision) of the slide rail (TTW guide) for a long time. CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. The pressure oil film has large bearing capacity, good rigidity, and good vibration absorption. The sliding rail (TTW guide) runs smoothly and is not easy to crawl at low speeds. However, the structure of the static pressure guide rail is relatively complicated, and an oil supply system with a good filtering effect is required, and the manufacturing cost is also high. This guide rail is mostly used in heavy-duty CNC machining machine tools.

Hydrostatic guideway of CNC machining lathe

Cnc Milling News micohuang · 2021-07-10 · comments off

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces… Read more

Plastic guide rail of CNC machining lathe

Cnc Turning News micohuang · 2021-07-10 · comments off

The plastic (structure: synthetic resin, plasticizer, stabilizer, pigment) slide rails (TTW guide) of CNC machining lathes are bonded to the slide rails that match the bed rails. The static and… Read more

1. Blue-collar layer: namely, CNC machining operation technicians, proficient in machining and CNC machining process knowledge, proficient in the operation and manual programming of CNC machine tools (attribute: automatic machine tool), and understand the simplicity of automatic programming and CNC machine tool (attribute: automatic machine tool) Maintenance and repair, this kind of personnel has a large market demand, and is suitable as a CNC machine tool (attribute: automatic machine tool) operator in the workshop, but because of their single knowledge, their salary will not be much higher. 2. Gray-collar layer: First, CNC machining programmer: master the knowledge of CNC machining technology and the operation of CNC machine tools (attributes: automated machine tools), familiar with the design and manufacturing expertise of complex molds (title: mother of industry), and master Three-dimensional CAD/CAM software, such as UG, GOOGLE PRO/E, etc.; proficient in CNC automatic programming, manual programming technology. CNC machining is a process method for parts processing on CNC machine tools. The process regulations of CNC machine tool processing and traditional machine tool processing are generally the same, but significant changes have also taken place. A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of variable parts, small batches, complex shapes, and high precision, and to realize high-efficiency and automatic processing. In the numerical control processing, the control system issues instructions to make the tool perform various movements that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. This kind of personnel is in high demand, especially in the mold (title: mother of industry) industry is very popular, and the treatment is also very high. Second, maintenance and repair personnel of CNC machine tools (attributes: automated machine tools): master the mechanical structure and electromechanical joint adjustment of CNC machine tools, master the operation and programming of CNC machine tools, and be familiar with the characteristics of various CNC systems, software and hardware structures, PLCs and parameters (parameter) settings. Proficient in the mechanical and electrical debugging and maintenance of CNC machine tools. The demand for such personnel is relatively small, but it is very difficult to train such personnel and requires a large amount of practical experience (experience) accumulation, which is currently very scarce, and their remuneration is also high. 3. Gold-collar layer: belongs to CNC machining generalists, possesses and is proficient in the comprehensive knowledge required by CNC machining operators, CNC programmers, and CNC maintenance and repair personnel, and has accumulated a lot of practical experience (experience) in actual work. Very wide. CNC machining CNC is also called computer gong, CNCCH or numerical control machine tool. It is actually a kind of name in Hong Kong, which greatly reduces the number of tooling. CNC machining parts with complex shapes does not require complicated tooling. CNC machining is a new type of processing technology, the main work It is to compile the processing program, that is, to convert the original manual work to computer programming. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification. Proficient in the mechanical structure design of CNC machine tools (attribute: automated machine tool) and electrical design of CNC system, master the electromechanical joint debugging of CNC machine tools (attribute: automated machine tool). Can complete the selection of CNC system, the design, installation, debugging and maintenance of the electrical system of CNC machine tools. Can independently complete the CNC transformation of machine tools. They are the sought-after talents of enterprises (especially private enterprises), and their remuneration is very high.

Classification of NC Machining Occupation Levels

MFG News micohuang · 2021-07-10 · comments off

1. Blue-collar layer: namely, CNC machining operation technicians, proficient in machining and CNC machining process knowledge, proficient in the operation and manual programming of CNC machine tools (attribute: automatic machine… Read more

The feed drive of CNC machining machine tools has higher requirements for position accuracy (precision), fast response performance, and speed adjustment range. In the numerical control processing, the control system issues instructions to make the tool perform various movements that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. CNC machining CNC is also called computer gong, CNCCH or numerical control machine tool. It is actually a kind of name in Hong Kong, which greatly reduces the number of tooling. CNC machining parts with complex shapes does not require complicated tooling. CNC machining is a new type of processing technology, the main work It is to compile the processing program, that is, to convert the original manual work to computer programming. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification. There are three main types of motors for CNC machining machine tools to achieve feed transmission: stepper motors, DC servo motors and AC servo motors. At present, stepping motors are only used in economical CNC machine tools (attributes: automated machine tools), DC servo motors are being extensively used in our country, and AC servo motors as ideal transmission components are gradually replacing (step by step). One substance replaces another substance (mostly the strong replaces the position of the weak)) DC servo motor. When the feed system of the CNC machine tool adopts different transmission elements, the transmission structure is different. There are three main forms of connection between the motor and the lead screw, as shown in Figure 69. 1. Gear transmission mode For the connection form of the motor and the lead screw, the CNC machining machine tool generally adopts a gear transmission pair in the feed transmission device to achieve a certain speed reduction ratio requirement. Since gears may not meet the requirements of the ideal tooth surface during manufacturing, there is always a certain error. A pair of meshing gears must have a certain tooth side clearance to work normally, but the tooth side clearance will cause reverse transmission clearance. For a closed-loop system, the side clearance will affect the stability of the system (explanation: stable and stable; no change) (The stability of). Therefore, the gear transmission pair often adopts an anti-backlash mechanism (organization) to minimize the tooth backlash. 2. Synchronous pulley transmission form The structure of this connection form is relatively simple. In the numerical control processing, the control system issues instructions to make the tool perform various movements that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. Synchronous belt transmission combines the advantages of belt transmission and chain transmission, which can avoid vibration and noise caused by gear transmission, but it can only be applied to occasions with low torque characteristics. The requirements for center distance during installation are strict. The manufacturing process of belt and pulley complex. 3. Coupling transmission form Usually the motor shaft and the screw are connected by a cone-ring keyless connection or a high-precision (precision) cross coupling (Coupling), so that the feed transmission system has a higher transmission accuracy (precision) and transmission rigidity. And greatly simplify the transmission structure. This type of connection is commonly used in the feed drive of machining centers and numerically controlled machine tools (attributes: automated machine tools) with high precision (precision).

The connection between the motor and the screw of the CNC machining machine tool

Cnc Milling News micohuang · 2021-07-10 · comments off

The feed drive of CNC machining machine tools has higher requirements for position accuracy (precision), fast response performance, and speed adjustment range. In the numerical control processing, the control system… Read more

The feed motion of a CNC machining machine tool is the direct object of digital control. Regardless of point control or contour control, the final dimensional accuracy (accuracy) and contour accuracy of the workpiece are affected by the transmission accuracy and sensitivity of the feed motion. (Sensitivity) and stability (explanation: stability and stability; no change). For this reason, the feed system of CNC machining machine tools should pay full attention to reducing frictional resistance, improving transmission accuracy and rigidity, eliminating transmission gaps, and reducing inertia of moving parts. 1. Reduce friction resistance In order to improve the rapid response performance and motion accuracy (precision) of the CNC machine tool (attribute: automated machine tool) feed system, the friction resistance and the difference between dynamic and static friction of the moving parts must be reduced. In order to meet the above requirements, in the feed system of CNC machine tools, ball screw nut pairs, hydrostatic screw nut pairs, rolling slides (TTW guide), hydrostatic guide rails and plastics (structure: synthetic resin, plasticizer) are commonly used , Stabilizers, pigments) guide rails. While reducing the frictional resistance, it is also necessary to consider that the transmission components should have appropriate damping to ensure the stability of the system (explanation: stable and stable; no change) (The stability of). 2. Improve transmission accuracy (precision) and rigidity The transmission accuracy (precision) and rigidity of the feed transmission system are mainly determined by the transmission clearance and the accuracy and rigidity of the screw nut pair, worm gear pair (circumferential feed) and the supporting structure from the mechanical structure consideration (consider) . CNC machining CNC is also called computer gong, CNCCH or numerical control machine tool. It is actually a kind of name in Hong Kong, which greatly reduces the number of tooling. CNC machining parts with complex shapes does not require complicated tooling. CNC machining is a new type of processing technology, the main work It is to compile the processing program, that is, to convert the original manual work to computer programming. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification. In the numerical control processing, the control system issues instructions to make the tool perform various movements that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. The transmission gap mainly comes from the transmission gear pair, worm gear pair, screw nut pair and its supporting parts. Pre-tightening force should be applied or measures to eliminate the gap should be taken (refer to the solution to the problem). Shortening the transmission chain and setting a reduction gear in the transmission chain can also improve the transmission accuracy. Enlarging the diameter of the screw, and applying pre-tightening force to the screw nut pair, supporting parts, and the screw itself are effective measures to improve the transmission rigidity. Insufficient stiffness can also cause crawling and vibration of the workbench (or carriage). 3. Reduce the inertia of moving parts The inertia of the moving parts has an impact on the startup and braking characteristics of the servo mechanism (organization), and the inertia of the parts running at high speeds has a greater impact. CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. Therefore, on the premise of satisfying the strength and rigidity of the components, the mass of the moving components and the diameter and mass of the rotating components may be reduced as much as possible, so as to reduce the inertia of the moving components.

The requirements of CNC machining machine tools for feed motion

Cnc Milling News micohuang · 2021-07-10 · comments off

The feed motion of a CNC machining machine tool is the direct object of digital control. Regardless of point control or contour control, the final dimensional accuracy (accuracy) and contour… Read more

Eight Series Knowledge Of Aluminum Alloy

MFG News micohuang · 2021-07-10 · comments off

Aluminum has a lighter specific gravity, less springback during forming, higher strength, close to or higher than high-quality steel, good plasticity, and when the product is formed larger, it is… Read more

The difference between CNC machining center and engraving and milling machine

MFG News micohuang · 2021-07-10 · comments off

1. Is CNC machining center better or engraving and milling machine better? CNC machining centers and engraving and milling machines are relatively commonly used mechanical equipment, and there are similarities… Read more