The full name of CNC is Computer numerical control. Computer numerical control (CNC) is a method for automating control of machine tools through the use of software embedded in a microcomputer attached to the tool. It is commonly used in manufacturing for machining metal and plastic parts. Computer Numerical Control – Taking digitized data, a computer and CAM program is used to control, automate, and monitor the movements of a machine. The machine can be a milling machine, lathe, router, welder, grinder, laser or waterjet cutter, sheet metal stamping machine, robot, or many other types of machines. This type of machining requires fewer machine operators since one skilled operator can run several machines at one time. Since the CNC is so accurate it reduces errors from the manufacturing process and eliminates unnecessary waste.

While pin terminals are used both in electrical & electronic systems, they find more use in electronic/communication systems.   An electronic system includes different electronic devices that are interconnected. This network of various components/circuits is connected using different interconnects.   An interconnect is a physical/logical connection between 2 electronic devices of networks. Interconnects of various types have been developed for varying purposes such as signal transmission, power distribution, and more. Based on termination ends, these interconnect have been classified into three:     1.       Board-to-board connectors 2..       Cable/wire-to-cable/wire connectors 3.       Cable/wire-to-board connectors     Board-to-board connectors: These connectors are mostly used for interconnecting PCBs without a cable. They save space on cables, hence making them suitable for systems with limited space irrespective of parallel & perpendicular configuration. Motherboard and daughterboard arrangements usually employ board-to-board connectors.   board-to-noard-connector Cable/wire-to-cable/wire connectors: As its name suggests, it connects two wires or cables. One end is connected to a permanent wire while the other end to a separable interface.  There are a lot of varieties of Cable/wire-to-cable/wire connectors in the market each serving different purposes.   cable/wire-to-cable/wire connector Cable/wire-to-board connectors: As its name suggests, Cable/wire-to-board connectors connect a wire to a PCB.  They are similar to the wire-to-wire connections, especially in the mating interface.   cable/wire-to-board connector Terminals give different meanings when used in different disciplines. From an electrical perspective, it simply means a point at which a conductor comes to an end whether it be a component, device, or network. The textbook definition of a terminal would be, a connecting joint at an endpoint, acting as a reusable interface and creating a point where external circuits can be connected. To locate it in a circuit you can look at it at the end of a wire probably fitted with a connector or a fastener.

CNC turning is a CNC process where a cutting tool, a typically non-rotating component of the lathe or turning center, removes material from a rotating rigid material. This process produces different shapes and sizes depending on the turning operations used. The first part of CNC turning is “CNC,” which stands for “computer numerical control” and is commonly associated with the automation of machining processes.   “Turning” is the machining term for a process where the workpiece is rotated while a single-point cutting tool removes material to match the final part design.   Therefore, CNC turning is an industrial machining process controlled by a computer and carried out on equipment capable of turning: a lathe or a turning center.  This process can take place with the axis of rotation in the horizontal or vertical orientation. The latter being used primarily for workpieces with a large radius relative to their length.

CNC stands for Computer Numerical Control milling. This essentially means that the milling machine is moved and monitored by numerical computer control, rather than by hand. CNC milling is a manufacturing process that uses a cutting tool mounted on a rotating spindle to selectively remove material from a raw substrate to get what we want. The workpiece is rigidly mounted on a table that moves or rotates in different planes, so the tool can work at multiple angles. Complex CNC milling machines can have 5 or more independent axes of motion to create more complex shapes or avoid moving the workpiece to a separate machine.

Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder. It is used to add mild corrosion resistance, for appearance, and to minimize light reflection.To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax.One of its advantages over other coatings is its minimal buildup. There are many advantages of blackening, mainly: Blackening can be done in large batches (ideal for small parts). There is no significant dimensional impact (the blacking process creates a layer about 1 µm thick). It is far cheaper than similar corrosion protection systems, such as paint and electroplating.

Sandblasting can remove paint, rust, and residue from oxidation from materials quickly and efficiently. Sandblasting can also be used to change the condition of a metal's surface, such as through removing scratches or casting marks. Sandblasting as a cleaning method has been widely used for over a hundred years. There are several variants of sandblasting process like bead blasting, Soda blasting and shot blasting. Before sandblasting, it is mandatory to know about its materials and the pros and cons. There are many material can be Sandblasted, such as glass，stone,metal,wood,Plastics Steel.

Electroplating is a process by which metal ions migrate via a solution from a positive electrode to a negative one. An electrical current passing through the solution causes objects at the cathode to be coated by the metal in the solution. Common metals used in the electroplating process include black and silver nickel, chromium, brass, cadmium, copper, gold, palladium, platinum, ruthenium, silver, tin and zinc. We typically recommend using Grade S or N Nickel, cadmium pellets, CDA 101 OFHC Copper, brass alloys, tin anodes and zinc.

Anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish. Aluminum is ideally suited to anodizing, although other nonferrous metals, such as magnesium and titanium, also can be anodized. The anodic oxide structure originates from the aluminum substrate and is composed entirely of aluminum oxide. This aluminum oxide is not applied to the surface like paint or plating, but is fully integrated with the underlying aluminum substrate, so it cannot chip or peel. It has a highly ordered, porous structure that allows for secondary processes such as coloring and sealing. Anodizing is accomplished by immersing the aluminum into an acid electrolyte bath and passing an electric current through the medium. A cathode is mounted to the inside of the anodizing tank; the aluminum acts as an anode, so that oxygen ions are released from the electrolyte to combine with the aluminum atoms at the surface of the part being anodized. Anodizing is, therefore, a matter of highly controlled oxidation the enhancement of a naturally occurring phenomenon.

What is wire cutting? Wire cutting is , whic refers to the use of wire tools (such as metal wire, molybdenum wire, etc.) to cut raw materials (conductive materials), which belongs to the category of electrical processing.When the former Soviet Union Razalianko and his wife studied the phenomenon and causes of the damage of the switch contacts by spark discharge, they found that the instantaneous high temperature of the electric spark can melt and oxidize the local metal and be corroded, thus pioneered and invented the EDM method. The wire cutting machine was also invented in the former Soviet Union in 1960. Our country was the first country to be used in industrial production. At present, most of the wire cutting machine tools adopt a microcomputer control system with a high degree of automation. Main application: (1) Processing molds; (2) Machining parts with fine structure; (3) Machining parts with complex shapes; (4) Processing hard conductive materials; (5) Trial production of new products; (6) Precious metal blanking. Main feature: Compared with traditional turning, milling and drilling processing methods, wire cutting has its own characteristics: (1) Directly use 0.03-0.35 mm metal wires as electrodes, no specific shape is required, which can save electrode design and manufacturing costs; (2) Regardless of the hardness of the workpiece material, as long as it is a conductor or semiconductor material, it can be processed, and the loss of the electrode wire is small, and the processing accuracy is high; (3) It is suitable for the processing of small batches, complex shapes, single pieces and trial products, and the processing cycle is short; (4) In WEDM machining, the electrode wire does not directly contact the workpiece, and the effect between the two is very small, so the deformation of the workpiece is small, and the electrode wire and fixture do not need too high strength; (5) The working fluid adopts water-based emulsion, which has low cost and will not cause fire; (6) It is not suitable for processing large-scale parts with simple shapes, nor can it process non-conductive parts. Cutting process steps: Prepare workpiece blanks, clamping tools, measuring tools, etc. before processing. If it is necessary to cut a workpiece with an inner cavity shape, or the process requires processing with a threaded hole, the blank should be pre-made with a threaded hole, and then follow the steps below: (1) Start the machine tool power supply to enter the system and prepare the processing program; (2) Check whether there are any abnormalities in each part of the machine tool, such as the operation of high frequency, water pump, wire tube, etc.; (3) Wire threading, threading, and vertical alignment; (4) Clamping the workpiece and aligning; (5) For the wire, establish the starting position of cutting; (6) Start the wire feed, turn on the working fluid pump, and adjust the nozzle flow rate; (7) Adjust processing parameters; (8) Run the processing program t...

What are dowel pins used for? The dowel pin is mainly used between the screws fastened between the two parts to ensure the accuracy of the position. It is mainly used for assembly positioning, and can also be used as overload shear connection in connection and relaxation level safety devices. The basic form is cylindrical pin and tapered pin. Dowel pins are also called positioning pins. Let's learn the main functions and uses of dowel pins： First dowel pins are divided into cylindrical dowel pins and tapered dowel pins. 1.Cylindrical dowel pins(picture1 and 2) 2. Tapered dowel pins（picture3 and 4） The difference between them is: 1. Different processing. Cylindrical dowel pins can be pre-processed, and tapered dowel pins are usually matched. 2. Cylindrical dowel pins are often suitable for precise positioning (processing first), and tapered dowel pins are often used for frequent disassembly. 3. Cylindrical dowel pins can play a role of anti-shearing, tapered dowel pins are often used for positioning. Cylindrical dowel pins are fixed in the reamed hole with small interference, which can bear a small load. In order to ensure the positioning accuracy and the tightness of the connection, it should not be disassembled frequently. It is mainly used for positioning and also used as a coupling pin and a safety pin. The tapered dowel pin has good self-locking performance, high positioning accuracy, convenient installation, and multiple assembly and disassembly have little influence on the positioning accuracy. It is mainly used for positioning and can also be used as a connecting pin. The pin hole needs to be reamed. Material selection for dowel pins: If the workpiece needs to be clamped repeatedly during use, the fixed pin should have good wear resistance, and a better material should be selected, such as 20#steel or 45#steel, with surface carburizing and quenching. The material can also be selected according to actual usage. Commonly used materials are generally: stainless steel 303/304/316, Q235, 20# steel, 45# steel,  brass,ect. Customization is accepted, please feel free to send drawings to inquire at any time, thank you!

How to solder pogo pins? POGO PIN is a very commonly used electronic connector which consists of a turning needle tube, a turning needle and a compression spring. It keeps the needle in the needle tube and relies on the spring to provide contact force to establish an electrical connection between the needle and the mating parts. I believe many people do not know how the pogo pin is soldered. So let's follow ZLD to understand how the pogo pin is soldered on the PCB board? First of all, let us introduce the pogo pin types to you. There are many types of pogo pins, including upright pogo pins, side pogo pins, double-ended pogo pins, standard pogo pins, etc. Its function is very large, and installation is very important, so what are the installation methods of pogo pins ? Right-angle solder tail: The tail is bent plug-in encapsulation, allowing designers to have more choices in the use of space. Straight solder tail: normal plug-in encapsulation, easy to solder. Surface Mount (SMT): Good stability, the bottom of the needle tube is a flat-bottomed design, can be vertical or horizontal installation, easy to solder with PCB board. Some needle tubes are equipped with positioning pins at the end, which will not cause offset when soldering with PCB board, and the positioning effect is good. Xiamen ZhongLiDa Machinery, as a professional CNC product manufacturer, wholeheartedly provide you with quality products and services.

1. The purpose of nonconforming product control Prevent the unintended use or delivery of substandard products. 2. The method of controlling nonconforming product is Recognize first and then control. Control process of unqualified products 1. Identification Identify unqualified: the basis or standard for judging whether the product is qualified or not. -Product Standards —Customer requirements —Process documents -Inspection documents -Template -Explanation and advice from superiors 2. Identification Identification of inspection status —Identifies "pending" or "unqualified". —Production team: unqualified semi-finished products and raw materials should be marked with "to be processed" or "unqualified". —The inspector stamps the inspection stamp in the corresponding item column of the random card, process card or "rework order" as a "unqualified" mark. -Its role is: traceability. —Final inspection: identification of unqualified brand. Or write down (notify) unqualified phenomena, such as (leakage, cracking, few holes, wrong model, serious indentation, few processes, wrong materials, etc.). 3. Isolation Requirements: Clear separation from normal qualified products. —Red plastic tray/material box. —Special independent defective product rack. -Divide the unqualified area and place the defective products in the unqualified area. —The placement of the production area is different from that of other products to show the difference, and then pull it to the repair or rework area as required. —Regularly arrange personnel to the defective product area for confirmation and quantity registration 4. Record -Correctly record the type, batch, inspection date, inspection basis, quantity of non-conforming products, and inspection results of the unqualified products on the prescribed inspection report. —The inspection report is reviewed and approved as required. -Process: 5. Review When the amount is large, or when it has a large impact on the company's reputation and funds, it must be reviewed. (1) Incoming inspection: Disposal opinions signed by the inspection supervisor and above (if necessary, the technical department, production, supply chain, and related departments shall be organized to conduct review). (2) Process inspection: For batches of unqualified products, the Quality Management Department organizes relevant departments and relevant personnel to review. (3) Final inspection: The person in charge of the quality control department approves the disposal conclusion, and when necessary, the technical department participates in the review. 6. Disposal Including the following: selection and use, repair, concession, disposal, corrective and preventive measures. (1) Disposal of unqualified purchases —Return -Concession acceptance —Require the supplier to take relevant corrective and preventive measures -Our factory will arrange personnel to review the factory for many consecutive batches of unqualified suppliers and a large number of severely unqualified supplie...

Plunge milling, also known as Z-axis milling, is one of the most effective machining methods for high removal rate metal cutting. For surface machining, grooving and machining with large tool overhangs of difficult-to-machine materials, the processing efficiency of plunge milling is much higher than that of conventional end milling. In fact, when a large amount of metal material needs to be removed quickly, the plunge milling method can reduce the processing time by more than half. ▉advantage In addition, plunge milling has the following advantages: ①It can reduce the deformation of the workpiece; ②It can reduce the radial cutting force acting on the milling machine, which means that the spindle whose shaft system has been worn can still be used for plunge milling without affecting the processing quality of the workpiece; ③The tool overhang is large, This is very beneficial to the milling of the groove or surface of the workpiece; ④It can realize the grooving of high-temperature alloy materials (such as Inconel). Plunge milling is very suitable for rough machining of mold cavities and is recommended for efficient machining of aerospace parts. One of the special applications is plunge milling of turbine blades on a three-axis or four-axis milling machine. This kind of processing usually needs to be performed on a dedicated machine tool. ▉ Working principle When the turbine blade is plunge-milled, it can be milled from the top of the workpiece down to the root of the workpiece. Through simple translation of the X-Y plane, extremely complex surface geometries can be processed. When implementing plunge milling, the cutting edge of the milling cutter is formed by overlapping the profile of each blade, and the plunge milling depth can reach 250mm without vibration or distortion. The cutting motion direction of the tool relative to the workpiece can be either downward or downward. Upward, but generally cutting downward is more common. When plunge milling the inclined plane, the plunge milling cutter makes compound movement along the Z axis and X axis. In some processing occasions, spherical milling cutters, face milling cutters or other milling cutters can also be used to mill grooves, milling surfaces, milling bevels, and milling cavities. ▉ Scope of application The special plunge milling cutter is mainly used for roughing or semi-finishing. It can cut into the concave part of the workpiece or cut along the edge of the workpiece. It can also mill complex geometric shapes, including root cutting. In order to ensure a constant cutting temperature, all shank plunge milling cutters adopt internal cooling. The cutter body and insert design of the plunge milling cutter can cut into the workpiece at the best angle. Usually the cutting edge angle of the plunge milling cutter is 87° or 90°, and the feed rate ranges from 0.08 to 0.25 mm/tooth. The number of inserts clamped on each plunge milling cutter depends on the diameter of the milling cutter. For example, ...

NC (Numerical Control, digital control, referred to as numerical control) refers to the use of discrete digital information to control the operation of machinery and other devices, which can only be programmed by the operator. CNC CNC technology application   The development of CNC technology is quite rapid, which greatly improves the productivity of mold processing. Among them, the CPU with faster operation speed is the core of the development of CNC technology. The improvement of CPU is not only the improvement of operation speed, but the speed itself also involves the improvement of CNC technology in other aspects. Because of the great changes in CNC technology in recent years, it is worth a review of the current application of CNC technology in the mold manufacturing industry.       Block processing time and others Due to the increase in CPU processing speed, and CNC manufacturers applying high-speed CPUs to highly integrated CNC systems, the performance of CNC has been significantly improved. Faster and more sensitive systems achieve more than just higher program processing speed. In fact, a system that can process part machining programs at a fairly high speed may also behave like a low-speed processing system during operation, because even a fully functional CNC system has some potential problems that may become limitations The bottleneck of processing speed.   At present, most mold factories realize that high-speed machining requires more than short processing time. In many ways, this situation is very similar to driving a car. Will the fastest car win the race? Even a spectator who watches the car race occasionally knows that in addition to speed, there are many factors that affect the outcome of the race.   First of all, the driver's knowledge of the track is important: he must know where there are sharp turns so that he can slow down appropriately and pass the curve safely and efficiently. In the process of processing molds with high feed speed, the to-be-processed trajectory monitoring technology in CNC can obtain the information of sharp curves in advance. This function plays the same role.   Similarly, the driver's sensitivity to other drivers' actions and uncertainties is similar to the number of servo feedbacks in the CNC. Servo feedback in CNC mainly includes position feedback, speed feedback and current feedback.   When a driver is driving around the track, the consistency of the movement, whether he can brake and accelerate skillfully, has a very important impact on the driver's performance on the spot. Similarly, the bell-shaped acceleration/deceleration and to-be-processed track monitoring functions of the CNC system use slow acceleration/deceleration instead of abrupt speed changes to ensure smooth acceleration of the machine tool.   In addition, there are other similarities between the car and the CNC system. The power of the racing engine is similar to the drive and motor of the...

Basic requirements for motor shafts What are the basic requirements for motor shafts? (1) Must have sufficient strength. That is to say, under normal load and specified special conditions (such as sudden short circuit, etc.), any part of the shaft cannot produce residual deformation or damage. (2) Must have sufficient rigidity. That is, the deflection of the rotating shaft must be within the allowable range. (3) There should be sufficient difference between critical speed and working speed to avoid resonance. Xiamen Zhonglida Machinery Processing Co., Ltd. has more than 50 sets of motor shaft manufacturers, such as centering machines, precision CNC lathes, centerless grinding, surface grinding, cylindrical grinding, CNC machining centers, and other first-class equipment. It can process materials such as steel, iron, aluminum, copper and other materials. The processing length can be 2-600MM, the processing diameter can be 2-210MM, and the processing accuracy can be 0.005. It can be milled, drilled, and tapped. Wire, slotting and other processes. The company has a high-level processing system, with advanced equipment and strong technical force, to provide customers with perfect service. Over the years, our company has won wide acclaim from many customers for its strong technical strength, excellent pre-sales, after-sales service and good reputation.

Worm gear drive is a drive that changes the direction of the drive. In the process of force transmission, the pressure generated is large, the friction is serious, and the heat generated is also large. In order to avoid gluing, in the selection of materials, softer alloy materials are often used because of the lower speed of the worm gear, while the worm is Use steel materials with greater strength. The number of worm heads can be selected according to the transmission ratio and transmission efficiency requirements. The number of worm heads is small, the transmission ratio is large, but the efficiency is low. To increase efficiency, the number of worm heads should be increased. But the more worm heads, the more difficult the processing. In meeting the transmission requirements, the fewer the number of worm heads, the better. There is usually a device for controlling the rotor behind the head of the electric fan. When pressed, the fan can be turned, and the direction of the fan can be fixed by pulling it out. The lower part that drives the rotating head of the electric fan can be regarded as a crank rocker mechanism. Driven by the worm gear drive, the lower gear rotates with it, and the rocker connected to it can swing within a certain angle under its drive, thereby achieving the purpose of allowing the fan to swing its head back and forth.