Lishui City Hongtai Automation Technology Co., Ltd A detailed introduction to the slide of optical axis guide

A detailed introduction to the slide of optical axis guide

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A detailed introduction to the slide of optical axis guide

: admin: 2020-03-14: 42

1. Basic form of triangular guide rail: the guide rail can automatically compensate for wear, so the

guide accuracy is high. Its section angle is determined by the load size and guidance requirements,

generally 90 °. In order to increase the bearing area and reduce the specific pressure, a larger top

angle (110 ° - 120 °) is adopted under the condition that the height of the guide rail is constant, and

a smaller top angle (60 °) is adopted to improve the guidance. If the force on the guide rail differs

greatly in the two directions, asymmetric triangle should be adopted to make the direction of the for

ce perpendicular to the rectangular guide rail as much as possible: the advantages are simple

tructure, convenient inspection and repair; the guide rail has wide surface, large bearing capacity

and high rigidity, so it is widely used. But its guiding accuracy is not as high as the triangular guide

rail; the guide rail gap needs to be adjusted by pressing plate or inlay strip, and it needs to be

readjusted after wearing. Dovetail guide rail: the adjustment and clamping of dovetail guide rail is

relatively simple, and the clearance of each surface can be adjusted with a inlay strip, and the height

is small, and the structure is compact; however, the manufacturing inspection is not convenient, the

friction is large, and the rigidity is poor. It is used in the situation of low speed, small force and

limited height and dimension.Smooth shaft guide rail, slide block, circular guide rail: it is easy to

manufacture, the outer circle is grinded, and the honing of the inner hole can achieve precise

matching, but the gap cannot be adjusted after wearing. In order to prevent rotation, keyway can be

opened on the surface of cylinder or plane can be machined, but it can not bear large torque. It is

suitable for the occasion of bearing axial load.

2. Common guide rail combinationCombination of triangle and rectangle: this kind of combination

takes triangle guide rail as the guiding surface, with high guiding accuracy and good technology of

flat guide rail, so it is most widely used. This kind of combination has two forms: V-Flat combination

and edge flat combination. V-Flat combined guide rail is easy to store lubricating oil, which can be

used at low and high speed; edge flat combined guide rail can't store lubricating oil, only used for

low-speed movement.In order to make the slideway move easily, save labor and wear evenly, the

driving element should be set under the triangle slideway or incline to the triangle slideway.

Combination of rectangle and rectangle: bearing surface and guide surface are separated, so it is

easy to manufacture and adjust. The gap of the guide surface is adjusted by inserting strip, and the

contact rigidity is low. Double triangle guide rail: due to the symmetrical structure, the wear of the

two guide rails is even, and the symmetrical position remains unchanged after wear, so the

machining accuracy has little impact. The contact stiffness is good, the guiding accuracy is high, but

the process is poor, and the four surfaces are difficult to be completely contacted by scraping or

grinding. If the thermal deformation of moving parts is different, the four surfaces can not be

guaranteed to contact at the same time, so it is not suitable for the occasion with large temperature

change.