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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

Spring Design Attention And Roll Forming Method

Spring Design Attention And Roll Forming Method The coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold winding method is adopted. High-quality carbon spring steel wire is usually first cold drawn and then heat treated. After winding, it is generally not quenched, but only tempered at low temperature to eliminate the internal stress during winding. Hot-rolling method: Springs with larger diameter (>8mm) spring wire should use hot-rolling method. Hot rolled springs must be quenched and tempered at medium temperature. The Design Process Of Various Springs ·          Installation space: When designing a  compression spring , it is necessary to have a clear understanding of the space required for the installation of the spring, in order to effectively grasp the basic manufacturing conditions of the compression spring, including the outer diam

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

How Many Differences do You Know Between the Bolts and the Screws in Fasteners?

Bolts and screws are a common connection fasteners, which mainly play a role in connection and fixation in various fields and equipment.A lot of people sometimes screw and bolt to the wrong, easy to confuse.China Hardware is going to share the differences between fastener bolts and screws today. I hope it will be helpful for you to use bolts and screws again in the future.

The difference between bolts and screws of fasteners:

1. Different definitions of bolts and screws for fasteners:

Bolt: A bolt is a cylindrical threaded fastener used in conjunction with a nut during service.It is mainly used for fastening and connecting two parts with through holes. This kind of connection form is called bolt connection.

The screw, also known as the screw, screw is the use of the object's beveled circular rotation and friction force of physics and mathematical principles, the gradual cycle of fastening tools.The setting screw is used to fix the relative position of the machine parts.The setting screw is screwed into the screw hole of the part to be fixed, and the end of the screw is pressed on the surface of another part, that is, the former part is fixed on the latter part.

2. Different shape and structure of fastener bolts and screws:

Bolt: A type of fastener consisting of a head and a screw (cylinder with external thread), usually having a hexagonal head and generally larger head.

Screw: a kind of fastener composed of head and screw parts. The head is mostly a word groove, a cross groove, and a lot of hexagons inside and outside, generally smaller.

3, fastener bolt and screw application is different:

Bolts: usually used in pairs with nuts, for through holes, easily replaced after damage.

Screw: usually do not need nuts, directly with two objects (general connector first to drill, tapping) used for blind holes, connecting parts are rarely disassembled.

4. Different tools are used for fastener bolts and screws:

Bolts generally use wrench tools.

Screw generally use subclass tools.

5. Different fastening between bolts and screws of fasteners:

Bolts are usually used in conjunction with nuts or screwed into the holes of processed bolts.

In addition to the two fastening methods of bolts, there are also self-tapping screws, which are directly screwed to the workpiece with soft material without processing the bolt hole. For example, the wood screw we say is this kind of screw.

6, fastener bolts and screws used in different occasions:

The use of bolts and screws is different, the precision of the bolt is not high, unless there is a requirement to cooperate with the general bolt disassembly is convenient, low processing accuracy, is not limited by the connection material, widely used, the bolt required to cooperate with, can withstand the transverse load;Screw is compact in structure, but cannot be removed frequently, and cannot withstand large forces.

Link to this article:How Many Differences do You Know Between the Bolts and the Screws in Fasteners?

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