Motion guide rail pair formed by combining linear rolling guide rail and sliding guide rail

Abstract

A linear rolling guide rail and sliding guide rail combined motion guide rail pair belongs to the technical field of machinery. A rolling and friction composite guide rail structure is formed by two linear rolling friction guide rail pairs and eight sliding friction guide rail pairs. Wherein two linear rolling guide rails are used as reference guide rails for ensuring the movement precision, and the guide rail sliding block, the inclined pad and the slide carriage are tightly attached by adjusting the wedging depth of the 1-degree inclined pad. Each sliding friction guide rail pair is composed of an upper inlaid strip and a lower inlaid strip, and the sixteen inlaid strips form a three-dimensional surrounding structure with four symmetrical faces and distributed up and down. The back surface of the panel has 1: 50 inclination, and the front surface of the panel is a composite material soft belt veneer. By adjusting the wedging depth of the panel, a sliding friction pair between the front face of the panel and the ram is in an interference state. By means of the structure, the motion guide rail pair has the advantages of being moderate in friction coefficient, large in rigidity and good in anti-seismic damping characteristic.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a motion guide pair composed of a linear rolling guide and a sliding guide. Background Art

[0002] The motion guide pair is used for motion guidance between the slide and the ram of the gantry machine tool. Gantry machine tool users generally have poor cutting vibration resistance when the ram has a long extension length and is performing heavy cutting processing, which leads to reduced cutting efficiency. Summary of the invention

[0003] The present invention aims at solving the problems in the prior art and provides a motion guide pair which is a combination of a linear rolling guide and a sliding guide.

[0004] A motion guide pair composed of a linear rolling guide and a sliding guide, and a composite structure guide pair composed of two linear rolling friction guide pairs and eight pairs of sliding friction guide pairs.

[0005] The two linear rolling friction guide pairs include a left linear rolling guide and a right linear rolling guide. The guide bars of the left linear rolling guide and the right linear rolling guide are respectively connected to the slide by bolts, and the slider of the right linear rolling guide is connected to the slide by bolts. An inclined pad is provided between the slider and the slide of the left linear rolling guide, and the contact surface between the inclined pad and the slide has a 1° bevel angle. The dimensional error between the slider and the slide of the left linear rolling guide is compensated by adjusting the wedging depth of the inclined pad, so that the contact surfaces between the slider, the inclined pad and the slide of the left linear rolling guide are tightly fitted. The slider, the inclined pad and the slide of the left linear rolling guide are connected by bolts, and the front cover is connected to the slide by bolts.

[0006] The 8 pairs of sliding friction guide rail pairs include 16 inlay strips, the first upper inlay strip on the left side and the first lower inlay strip on the right side correspond to each other in a straight line, the second upper inlay strip on the left side and the second lower inlay strip on the right side correspond to each other in a straight line, the third upper inlay strip on the left side and the third lower inlay strip on the right side correspond to each other in a straight line, and the fourth upper inlay strip on the left side and the fourth lower inlay strip on the right side correspond to each other in a straight line.

[0007] The contact surface between the back of the inlay and the slide has a slope of 1:50, and the front of the inlay is veneered with a composite soft belt. By adjusting the wedging depth of the inlay, the sliding friction pair of the metal against the composite soft belt between the inlay and the slide forms an interference of 0.02 to 0.03 mm.

[0008] The advantages of the present invention are:

[0009] The friction pair adopts a "rolling and friction composite guideway" that combines a linear rolling friction guideway and a sliding friction guideway. The friction material of the linear rolling friction guideway pair is metal-to-metal, and the friction material of the sliding friction guideway pair is metal-to-composite soft belt. This "rolling and friction composite guideway" has the characteristics of moderate friction coefficient and good anti-seismic damping properties.

[0010] The use of symmetrically arranged 2 linear rolling guides + symmetrically arranged 8 pairs of sliding guides forms a three-dimensional all-inclusive slide rail structure that is symmetrical on four sides and distributed up and down. This structure has the characteristics of high rigidity and balanced rigidity in all directions.

[0011] In order to improve the rigidity and damping characteristics of this guide pair, the linear rolling guide pair and the sliding guide pair are both in an interference fit state. The interference amount of the linear rolling guide is selected according to the interference level corresponding to 10% preload, and the interference amount of the sliding guide pair is 0.02-0.03mm.

[0012] The over-positioning structure is adopted, and two linear rolling guides are used as reference guides, which are used as the reference to ensure the motion accuracy during installation and adjustment. The mating surface formed by the other 8 symmetrically arranged sliding guide pairs is actually an over-positioning structure, which can greatly improve the rigidity of the guide pair.

[0013] Through the above structure, this motion guide pair has the characteristics of moderate friction coefficient, high rigidity and good anti-seismic damping characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the figure:

[0015] Figure 1 It is a top view of the structure of the present invention.

[0016] Figure 2 It is the AA cross-sectional view of the structure of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1: Figure 1 and Figure 2 As shown, a motion guide rail pair composed of a linear rolling guide rail and a sliding guide rail, a composite structure guide rail pair composed of two linear rolling friction guide rail pairs and eight sliding friction guide rail pairs, including an inclined pad 1, a slide plate 2, a front cover 3, a trim strip 4, a ram 5, a right linear rolling guide rail 6 and a left linear rolling guide rail 9.

[0019] The two linear rolling friction guide pairs include a left linear rolling guide 9 and a right linear rolling guide 6. The guide bars of the left linear rolling guide 9 and the right linear rolling guide 6 are respectively connected to the slide 5 by bolts, and the slider of the right linear rolling guide 6 is connected to the slide 2 by bolts. An inclined pad 1 is provided between the slider of the left linear rolling guide 9 and the slide 2. The contact surface between the inclined pad 1 and the slide 2 has an inclined angle of 1°. The dimensional error between the slider of the left linear rolling guide 9 and the slide 2 is compensated by adjusting the wedging depth of the inclined pad 1, so that the contact surfaces between the slider of the left linear rolling guide 9, the inclined pad 1 and the slide 2 are tightly fitted. The slider of the left linear rolling guide 9, the inclined pad 1 and the slide 2 are connected by bolts, and the front cover 3 is connected to the slide 2 by bolts.

[0020] like Figure 1 As shown, the sliding friction guide rail pair includes 8 pairs of inserts 4, a total of 16. Figure 2 As shown, the left side panel strips 4 are respectively the first upper panel strip 11, the second upper panel strip 10, the third upper panel strip 7 and the fourth upper panel strip 8, and the right side panel strips 4 are respectively the first lower panel strip 14, the second lower panel strip 15, the third lower panel strip 12 and the fourth lower panel strip 13. The left side first upper panel strip 11 and the right side first lower panel strip 14 correspond to one straight line, the left side second upper panel strip 10 and the right side second lower panel strip 15 correspond to one straight line, the left side third upper panel strip 7 and the right side third lower panel strip 12 correspond to one straight line, and the left side fourth upper panel strip 8 and the right side fourth lower panel strip 13 correspond to one straight line.

[0021] The insert strip 4 is located between the slide plate 2 and the ram 5 , and the insert strip 4 is also located between the front cover 3 and the ram 5 .

[0022] The contact surface between the insert strip 4 and the slide plate 2 has a slope of 1:50. By adjusting the wedging depth of the insert strip 4, the sliding friction pair of the metal-composite soft belt between the insert strip 4 and the slide ram 5 forms an interference of 0.02-0.03mm.

[0023] Guide rail position adjustment: 2 linear rolling guide rails, one of which uses an inclined pad 1 to adjust the relative distance size with the other guide rail. During assembly, the length and thickness of the inclined pad 1 are adjusted to form a suitable interference state for the guide rail pair. 8 pairs of sliding guide rails are adjustable structures. The relative position with the 2 linear rolling guide rails is adjusted by inserting strips. During assembly, the length and thickness of the inserting strip are adjusted to form a suitable interference state for the guide rail pair.

[0024] Through the above structure, this motion guide pair has the characteristics of moderate friction coefficient, high rigidity and good anti-seismic damping characteristics.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motion guide rail pair composed of a linear rolling guide rail and a sliding guide rail, characterized in that: A composite structure guide pair consisting of 2 linear rolling friction guide pairs and 8 pairs of sliding friction guide pairs.

2. The motion guide rail pair of a linear rolling guide rail and a sliding guide rail combination according to claim 1, characterized in that: The two linear rolling friction guide pairs include a left linear rolling guide and a right linear rolling guide. The guide bars of the left linear rolling guide and the right linear rolling guide are respectively connected to the slide by bolts, and the slider of the right linear rolling guide is connected to the slide by bolts. An inclined pad is provided between the slider and the slide of the left linear rolling guide, and the contact surface between the inclined pad and the slide has a 1° bevel angle. The dimensional error between the slider and the slide of the left linear rolling guide is compensated by adjusting the wedging depth of the inclined pad, so that the contact surfaces between the slider, the inclined pad and the slide of the left linear rolling guide are tightly fitted. The slider, the inclined pad and the slide of the left linear rolling guide are connected by bolts, and the front cover is connected to the slide by bolts.

3. The motion guide rail pair of a linear rolling guide rail and a sliding guide rail combination according to claim 1, characterized in that: The 8 pairs of sliding friction guide rail pairs include 16 inlay strips, the first upper inlay strip on the left side and the first lower inlay strip on the right side correspond to each other in a straight line, the second upper inlay strip on the left side and the second lower inlay strip on the right side correspond to each other in a straight line, the third upper inlay strip on the left side and the third lower inlay strip on the right side correspond to each other in a straight line, and the fourth upper inlay strip on the left side and the fourth lower inlay strip on the right side correspond to each other in a straight line.

4. The motion guide rail pair of a linear rolling guide rail and a sliding guide rail combination according to claim 1, characterized in that: The contact surface between the back of the inlay and the slide has a slope of 1:50, and the front of the inlay is veneered with a composite soft belt. By adjusting the wedging depth of the inlay, the sliding friction pair of the metal against the composite soft belt between the inlay and the slide forms an interference of 0.02 to 0.03 mm.

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