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Anonymous users2024-02-10There are two types of guide rail plastics: PTFE guide rail soft belt and epoxy wear-resistant guide rail coating.
1) Features of PTFE guide rail soft belt.
1) Good friction characteristics: the dynamic and static friction factor of the metal-PTFE guide rail soft belt is basically unchanged.
2) Good wear resistance: PTFE guide rail soft belt material contains bronze, copper disulfide and graphite, so it itself has self-lubricating effect, and the requirements for lubricating oil are not high. In addition, the plastic texture is soft, even if it is embedded with metal chips, dust, etc., it will not damage the metal rail surface and the soft belt itself, which can extend the service life of the guide rail pair.
3) Good vibration damping: the damping performance of plastic is good, and its vibration damping effect and sound reduction performance are good, which is conducive to improving the movement speed.
4) Good manufacturability: It can reduce the hardness and surface quality requirements of the metal matrix pasted with plastic, and the plastic is easy to process (milling, planing, grinding, scraping), so that the contact surface of the guide rail pair can obtain excellent surface quality. PTFE guide rail soft belts are widely used in the motion guide rails of small and medium-sized CNC machine tools.
5) The use process of guide rail soft belt is simple. First of all, the adhesive surface of the guide rail is processed to a surface roughness of about r. After cleaning the adhesive surface with gasoline or acetone, bond it with adhesive.
After 1 2h of initial curing under pressure, close it to the paired fixed guide rail or special fixture, apply a certain pressure, and after curing at room temperature for 24h, remove and remove the residual glue, and the oil groove can be opened and finished.
2) Epoxy wear-resistant coating Epoxy wear-resistant coating is a two-component plastic coating with epoxy resin and molybdenum disulfide as the matrix, adding plasticizer, and mixing into a liquid or paste as one component and a curing agent as another component. SKC3 produced in Germany and HNT epoxy wear-resistant coating produced in China have the following characteristics:
1) Good machinability: it can be turned, milled, planed, drilled, ground and scraped.
2) Good friction.
3) Good abrasion resistance.
4) The use process is simple.
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Anonymous users2024-02-091. The characteristics of plastic guide rails
1) Advantages of plastic rails
1.It has excellent self-lubrication and wear resistance.
2.The friction coefficient to the metal is small, so it can reduce the driving force of the sliding part and improve the transmission efficiency.
3.The static friction coefficient is close (small change), so that the sliding is stable; It is possible to achieve extremely low movement speed without crawling, and at the same time, it can also improve the positioning accuracy of moving parts.
4.Due to the high self-lubrication, the lubrication device can be simplified, and the occasional short interruption of the lubricating oil does not cause grinding of the guideway.
5.The construction is simple, and the surface can be processed by general machining methods (milling, grinding, and manual scraping).
6.Because the plastic is softer, the layer of abrasive grains that occasionally fall into the guide rail can be embedded in it, so it can not form the strain of the metal guide rail surface.
7.It is repairable, and when it needs to be repaired, it is only necessary to remove the old plastic layer and replace it with a new one.
8.Compared with other guide rails, the structure is simple, the operating cost is low, the seismic resistance is good, the working noise is low, and the bearing capacity is high.
2) Disadvantages of plastic rails
1.Poor heat resistance and low thermal conductivity.
2.Low mechanical strength, poor rigidity, easy creep.
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Anonymous users2024-02-08The plastic guide rail is to use adhesive to bond the PTFE guide rail soft belt to the guide rail surface, so that the friction form of the traditional guide rail becomes a cast iron-plastic friction pair. The guide rail soft belt used below is referred to as PTFE plastic guide rail soft belt.
The PTFE guide rail soft belt is made of PTFE as the matrix, mixed and sintered with copper powder, molybdenum disulfide and graphite filler, and made into a guide rail soft belt. The characteristics of PTFE rail soft belt are:
Good abrasion resistance. Its dynamic and static friction coefficient is basically close, and the friction factor is very low, which can prevent low-speed crawling and smooth movement. Because the PTFE plastic guide rail soft belt material itself has a lubricating effect, the oil supply requirements for lubrication are not high, and the intermittent oil supply can be used.
Good vibration damping performance.
The damping performance of plastic is good, and its vibration damping and silencing performance is of great significance to improve the relative movement speed of the friction pair, and the maximum feed speed can reach 15m min
The process performance is good.
It reduces the requirements for the hardness and surface quality of the metal substrate on which the plastic is attached, and the plastic is easy to process (milling, grinding, scraping) to obtain a good surface quality of the guide rails.
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Anonymous users2024-02-07A guide rail is a grinding groove or ridge made of metal or other material that can bear, fix, guide and reduce the friction of a moving device or equipment.
Function: Used in linear reciprocating motion occasions, it has a higher rated load than the straight car line bearing, and can bear a certain torque, and can achieve high-precision linear motion in the case of high load, efficient and durable, the guide rail can be used for any machine or equipment that needs to be sliding and sliding, if it is used for elevator guide rail.
Categories: Ball guides, roller guides, needle roller guides.
Requirements and characteristics: the longitudinal groove or ridge on the surface of the guide rail, used for guiding and fixing machine parts, special equipment, instruments, etc., the guide rail is also known as the slide rail, linear guide rail, linear sliding companion rail.
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