Description

In automated and mechanized equipment, those precise linear guidance technologies are realized by guide rails. Then the main function of the guide rail is to support and guide the moving parts to move along a certain track, which is the basis for the linear motion of the workpiece table. The guiding principle of the linear guide is known from the positioning principle. To fully position a rigid body in space, its six degrees of freedom must be limited, that is, movement along the x y z direction and rotation around the x y z direction. For the linear motion guide, in order to make the moving parts move in the given direction, the other five degrees of freedom must be limited, that is, rotation in three directions and movement along the other two directions. Two parts that make relative movements form a pair of guide rails. Among them, the stationary part is called fixed guide rail or static guide rail, and the moving part is called moving guide rail. If the motion track is a straight line, it is called a linear motion guide; if the motion track is a circle, it is called a circular motion guide or a rotary motion guide. The linear motion guide rail is commonly used in precision workpiece tables. This chapter will discuss the linear motion guide rail. For simplicity of description, the linear motion guide rail is simply referred to as the guide rail in the following.

Protection of Guide Rails

The protection of the guide rail can prevent or reduce the wear of the guide rail pair and extend the life of the guide rail. Protective devices are produced by specialized manufacturers and can be purchased.

There are many ways to protect the guide rails. The common protective cover is shown in the figure. CNC machine tools. Especially when cutting in the center, there are a lot of iron filings and coolants, which can easily enter the guide rail and increase the wear of the guide rail. When the iron filings are large, the workbench is lifted to affect the accuracy of the guide rail, so the steel plate telescopic protective cover is usually used.

According to experience and data, the following factors are mainly considered when selecting lubricating oil for machine tool guide rail.

(1) Lubricant for both hydraulic medium and rail oil. According to the needs of different types of machine tool guide rail, guide rail lubricants that can also be used as hydraulic medium at the same time, which can be selected to meet both the requirements of the guides and the requirements of the hydraulic system. For example, for machine tools such as coordinate boring machine, the viscosity of the guide rail oil (50°C) should be selected to be higher (40 ~ 90mm²/s), but for various grinding machines, the guide rail lubricating oil is often supplied by the hydraulic system, and the requirements of the hydraulic system are higher, which must be met. At this time, the viscosity (50°C) of the hydraulic oil of the guide rail should be selected lower (20-40mm²/s), that is, the viscosity required by the hydraulic system.

(2) Select the viscosity by sliding speed and average pressure.

(3) It is selected according to the actual application of machine tool guide rail lubrication at home and abroad. When selecting to use the guide rail lubricants, you can also refer to examples of practical application of guide rail lubrication of existing machine tools at home and abroad.

The guide rail of CNC machine tools usually adopts centralized oil supply and automatic drip lubrication. Domestic lubrication equipment XHZ series thin oil centralized lubrication device. The device is composed of quantitative lubrication pump, precision oil filter for feeding the same oil, liquid level detector, oil feed detector, pressure relay, progressive oil separator and oil tank. Regular and quantitative oil supply to the guide rail surface.

Solid lubrication is to cover the friction surface of the guide rail with solid lubricant to form a cohesive solid lubrication film to reduce friction and wear. There are many types of solid lubricants. According to the basic raw materials, they can be divided into metal, metal compound, inorganic substance and organic substance. Adding solid lubricant powder to lubricating grease to enhance or improve the bearing capacity, aging performance and high and low temperature performance of lubricating grease.

Products Show

FAQ

Q: What is the payment term of your company?

A: Our payment terms are 30% down payment and 70% balance.

Q: When we send the inquiry, how long will you reply?

A: We usually quote within 12 hours after receiving your inquiry. If you are very urgent, please call me, except national holidays.

Q: Do you have a minimum order quantity?

A: Our minimum requirements depend on the parts ordered. Send us your drawings, pictures, sample gears or specifications and we will let you know the minimum requirements for the part.

Q: How to get the lowest price?

A: Increase the quantity. The more parts you order, the lower the price you get.

Q: What is the price of the sample?

A: The customer shall pay the sample fee and freight. After the sample is confirmed, we will refund the sample fee to the customer.

Q: Can I use other materials besides steel to manufacture rack and pinion?

A: The price of racks is not fixed. Generally, we need to quote according to customer's required parameters such as material, tooth type, module, length, accuracy, type, spiral angle and special customization!

Q: What is the minimum order quantity?

A: Frankly, it depends on the product. Please contact us directly about this.

Q: How to get the lowest price?

A: Increase the quantity. The more parts you order, the lower the price you get.

Q: Are you a trading company or a manufacturer?

A: We are factory.

http://www.yxjx-rack.com/