cutter rail classification Daquan

Bed makers are most concerned than the accuracy of machine tools, rigidity and service life, little attention to the rail system. But the realization of rail laying machine functions as a reliable

Foundation. The working parts of the machine types are specified by the control shaft moving on rails, the machine tool of the designer to select the various types and uses

In the form of rail systems, are hydraulic hose and fittings used more widely the following three; namely flat rails, linear motion guides and recirculating roller guide with a combination of flat rolling posed

Rails.

First, the rail functions
Although the rail system in the form of varied, but the nature of work is the same, the machine working parts move in the specified rail system, just like the train along the rail

Track traveling in the specified hydraulic hose manufacturers direction. Mainly the following three basic functions:
(A) the movement of the guide for the carrier;
(2) for the carrier to provide a smooth moving surface;
(3) the tool cutting force generated spread foundation or bed body, to reduce the impact of processing of parts of the passive. Movement along the rail system, most

Number of linear motion, there are a small number of arc movement. Many linear guide technology can be applied directly curved rails.

Second, the classification of rail
Machine-tool factory in the utmost effort to ensure that rail mounting accuracy. Guide is processed before the working parts are rails and after aging treatment, to remove

Internal stress. To ensure accuracy and extend the life of the rail, is a common scraping process method.
    1, linear guides
The new rail system so that the machine get fast feed rate, spindle speed is the same in the case of rapid traverse is linear guide features. Linear guide rail and plane

Rails, will have two basic components; reusable fitting as a guide for a fixed element, the other is moving element. In order to ensure the accuracy of the machine, bed, or a small amount of column

Scraping is essential, in general, the installation is relatively simple.
Linear guide between the moving element and the fixed element without intermediate medium, but with rolling balls. Because rolling balls adapted to high-speed movement, low friction, and spirit

High sensitivity to meet the work requirements of the moving parts, such as the machine tool turret, carriage and so on.
Long working hours, the ball begins to wear, the role of preload on the ball began to weaken, causing the machine working parts of the motion accuracy decreases. If you want to maintain the initial

Precision, rail brackets must be replaced, or even replace rails. If the rail system is already pre-load effect. System accuracy has been lost, the only way is to replace the rolling elements

Pieces.
   @@ 2, linear roller guide
Linear roller guide system is planar and linear roller guide rail combination with a roller mounted on parallel rails with ball bearing rollers on behalf of the moving parts of the machine

. Advantage is that contact area, large load, and high sensitivity. See from the end of the bed, the roller holder on a flat top surface and the side guide, in order to obtain high-precision

, On the machine frame member and the inner surface is disposed between a wedge, the pre-load acting on the bracket side. Wedge works with wedges similar work department

Weight of the role of the top surface of the stent. Acting on the rail system, the pre-load is adjustable, for compensation for the loss of wedge, this feature is widely used

In the medium or large bed, because it CNC instruction responsive to withstand load, linear roller guide system performance than traditional flat guide to withstand high-speed operation,

Improve the performance of the machine.
    3, inlaid steel rails
The most commonly used on the machine is fitted with steel guide rails form, its use has a long history. Inlaid steel guide rail system is a fixed element rectangular cross-section.

It can be horizontally mounted on the machine bed body, but also can be molded integrally with the bed, are called inlaid steel or integral. Inlaid steel rails are made of steel, hardened and

Grinding. Rockwell hardness of 60 degrees or more, the inlaid steel rails with screws or adhesive (epoxy) attached to the machine bed or by scraping the surface of the column with, indeed

Paul rails for optimum flatness. This form, maintenance and replacement easy, simple and very popular with maintenance workers welcome.
    4, slide rail
Traditional development of rail, first in the form of the sliding element and the rail, characterized by the slide rail between the rail and the slider of the medium used, the different forms of

Is to choose a different media.
Hydraulic systems are widely used in many rail. Hydrostatic guide is one of them, hydraulic oil under pressure into the groove sliding element, the guide rails and slide

The oil film between the elements, the spaced rails and the moving element, which reduces the friction of the moving element. Hydrostatic guideway for large loads are extremely effective for eccentric

Load a compensation effect. For example: a large sand box in the processing, the machine just went to the end of the trip, the load can be increased hydraulic rail, the rail accurately

To maintain the level of the load state. Some horizontal boring and milling machining using this technique, the spindle speed compensation deep decline.
The use of oil as a medium in the form of another guide rail is the dynamic pressure, dynamic pressure and static pressure guide rail is the difference: the pressure oil is not functioning, it uses

The viscosity of the oil to avoid the moving element and direct contact between the rails, the advantage of saving hydraulic pump.
The air moving elements can also be used between the media and the guide rail, it also has two forms, pneumatic and pneumatic dynamic pressure hydrostatic guide rail, the working principle of the hydraulic rail

Same.
    5, other forms of rails
Another commonly used on the machine guide Dovetail form, generally used for positioning the moving parts of the machine. For example: tailstock turning centers, rail system

The tailstock moves above or to the requested position to the supporting parts to be processed, and then quickly clamped. Many machine tool accessories, such as positioning table, rotary table or

Rotating shaft, also used as a positioning element Dovetail. Then clamped in the required position. If the machine reciprocating stroke is longer, then use a soft V-shaped guide, such as flat

Surface grinder and planer. Advantage is V-shaped guide rail system-oriented, able to withstand gravity cutting. Some use of V-shaped guide rail and plane combined form, V-rail

As a guide, a flat rail as a support body.

To ensure the rail system life. Maintenance is critical. Rail is one of the components of precision machine tools, it is impossible to protect 100% of dust, dust pollution. Because

Here, users should regularly check and maintain. Linear guides and linear roller guide posts require periodic lubrication, a lot of the ball linear guide systems and roller parts are installed grease

Connector is connected to the bracket. No matter what form of guide rail system, maintaining good lubrication of rolling elements, can reduce the rail system wear and prolong machine precision

Hold time.