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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

Hydrostatic guideway of CNC machining lathe

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 c17200   beryllium   copper   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 motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and lette

Classification of CNC Machining Occupation Levels

1. Blue-collar layer:   That is, CNC machining operation technicians, proficient in machining and CNC machining process knowledge, proficient in the operation and manual programming of CNC machine tools (attributes: automated machine tools), understand automatic programming and simple maintenance of CNC machine tools (attributes: automated machine tools), such There is a large market demand for personnel, and they are suitable for operating workers of CNC machine tools (attributes: automated machine tools) in the workshop, but due to their single knowledge, their wages will not be much higher.   2. Gray collar layer:   One, CNC machining programmer:   Master the knowledge of 5 Axis CNC machining Aluminum   technology and the operation of CNC machine tools (attributes: automated machine tools), be familiar with the design and manufacturing expertise of complex molds (title: mother of industry), and be proficient in 3D CAD/CAM software, such as UG, GOOGLE PRO/E, etc. ; Familiar with CNC

Comparison of several metal U disk shell designs

U disk has become an indispensable tool for office workers to transfer data daily. When asked about their experience of using USB flash drives, the homogeneity of USB flash drives must be very serious. As long as the storage security is good, the products are the same. However, manufacturers still insist on researching innovative products to meet the differentiated needs of consumers. Today, I will work with you to study some all-metal designs for USB flash drives, which have three functions to ensure data protection.

Full metal shell design USB

In fact, even the actual design performance of the same product is different. All these metal products we choose today. The products participating in this test are: HP v250w U disk, PNY hook USB, EasyK3 U disk, SSK SFD206 U disk, the material is the same, the actual speed is very different.

Introducing PNY Hooke USB
PNY 4GB Hook USB is a popular metal. The champagne steel case and white and silver metal hooks are particularly eye-catching.
PNY hook USB stainless steel case
The design of the PNY 4GB hook USB flash drive is simple and generous. Only the PNY logo and capacity logo are printed, without other pattern changes. In terms of volume, the size of the PNY hook U disk is 5.0mm x 15.8mm x 48.6mm, which is exquisite and compact.
U disk metal hook
The U disk body and the hook are integrated, which is convenient for users to plug and unplug. There is no delay in waist and key hook. In addition, due to the hard steel shell, the PNY Hooke U disk can safely store and carry information without worrying about punching and collision.
The PNY 4GB Hook U Disk uses A+ level memory chips, and the performance is not weak. The official 4GB write speed is up to 6.5MB/s and the read speed is up to 24MB/s.

Introducing the HP v250w USB Drive
hp v250w U disk metal shell design

Appearance HP v250w uses a solid metal material, and the surface of the shell is as bright as a mirror. Except for the HP LOGO, there are no new simple changes to the capacity logo, which can better demonstrate the user’s wisdom and outstanding taste. HP v250w 5.0mm high*15.8mm wide*48.6mm long, one-piece design is easy to insert. In addition, because the entire USB flash drive body is made of bright metal, the HP v250w is not only strong in texture, but also more durable and less accurate than a plastic USB flash drive. Already given.

HP v250w USB CD metal hook

The biggest feature of HP v250w is that the head of the U disk is designed as a hook, which is convenient to carry. A cylindrical plug is also designed under the hook to ensure that the U disk hook will not fall off. Once the object is hooked, pull out the plug and replace it after the hook. The hook is closed, so there is no need to worry about the USB flash drive falling. In this way, the U disk can be easily connected to the key case or chain, and the user can carry the stored data.
In other respects, the capacity of HP v250w covers 4GB, 8GB, 16GB, 32GB mainstream capacity options, excellent transmission speed, Windows 7/2000 / XP / Vista and Mac OS: perfect support for 10.3 and above. The two-year warranty is based on the exquisite style of the HP U series.

SSK SFD206 (4GB) Metal Shell USB Flash Drive
SSK SFD206 (4GB) metal case
The SSK SFD206 (4GB) metal flash drive adopts a transparent plastic case + cardboard packaging design, and the transparent plastic case clearly shows the shape of the U disk.
The design of SSK SFD206 (4GB) metal flash drive is very creative. The appearance is simple and fashionable, and the metal texture is strong. It can be used as a key accessory like a fashionable nail clipper.
Its alloy shell is integrally formed. The alloy shell endows the U disk with excellent sealing performance, the overall structure is evenly distributed, and the pressure resistance is improved. Even if the USB flash drive is held with both hands, it is difficult to disassemble and deform. It can be seen that the USB flash drive is very strong and has a much higher drop resistance than plastic.
Metal texture shell alloy shell key accessories shell

Interface, SSK SFD206 (4GB) metal flash drive (double-layer design), the golden finger area adopts PIPTM packaging technology, and the outer layer is fixed by a thick metal shell, so the interface is not easy to damage.
Metal shell fixed protection
The USB interface specification is the mainstream USB 2.0, which is backward compatible with the USB 1.1 specification. Easy to use and easy to carry.

EasyJ3 K3 Series Button U Disk
Metal key U disk bag
Easy Jaguar K3 series button U disk is traditional plastic packaging, simple and practical. This is also the traditional packaging design of U disk. The inner panel has a dark blue background. The transparent packaging allows consumers to clearly see the appearance of the product, the front anti-counterfeiting label, product parameters and other information.
The overall size of the Easy Jaguar K3 series button USB flash drive is about 24 * 57 * 2.7mm. It adopts all stainless steel design and drawing effect to show noble and textured style, exquisite and fashionable. Easy Jaguar K3 U Disk adopts traditional Chinese key-shaped design, inheriting the essence of classical culture. It also uses the main UDP technology.
Stainless steel housing Stainless steel housing design and drawing

Easy Jaguar K3 series button U disk is full of metal texture. For the key shape design, we applied for utility model patents and appearance design patents through the China Intellectual Products Administration. At the same time, it adopts the latest waterproof design, soaked for 24 hours, and can be used normally after taking it out to dry. Easy Jaguar K3 series button U disk has nationwide service, including annual replacement.

Easy Jaguar K3 series button U disk adopts USB 2.0 interface, and the main control flash memory adopts gold wire binding and high-end COB package synthesis, and has passed the 10-meter national free fall test. The Eager encryption tool EA-Key is built in the latest international AES-256-bit encryption host EA_key3.1 to encrypt the U disk to ensure data security.

Full text abstract
After testing, we found that HP v250w U disk and Easyjet K3 U disk performed quite well. Let’s take a look at the special features of these two products.
HP v250w USB drive
HP v250w USB Advantages: Portable hook design, glossy metal shell, quality assurance from major manufacturers, it can be easily hung on the waist or schoolbag, losing the sense of fashion.

Easyjet K 3 Button USB Flash Drive
Advantages of Easy Jaguar K3 USB: Key-shaped innovative design, dust-proof, anti-static, anti-magnetic, and high temperature resistance. It has applied for utility model patents and appearance design patents through the China Intellectual Property Office. It uses advanced AES-256 bit encryption to protect data security.

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