CN102297200A

CN102297200A - Design theory of pressing in of rolling body in rolling guide pair

Info

Publication number: CN102297200A
Application number: CN2011102184839A
Authority: CN
Inventors: 丁太虎
Original assignee: Weihai Lio Taijing Automation Co Ltd
Current assignee: Weihai Lio Taijing Automation Co Ltd
Priority date: 2011-08-02
Filing date: 2011-08-02
Publication date: 2011-12-28

Abstract

The invention discloses a design theory of pressing in of a rolling element in a rolling guide pair. A designing structure in the invention comprises a guide rail substrate and a rolling element, wherein, the guide rail substrate is made of an aluminum alloy-containing light metal with sufficient strength and rigidity, and the rolling element is made of materials like bearing steel and spring steel which has high strength and hardness. According to the design theory, the rolling element is pressed in and assembled in grooves at two sides of the guide rail substrate, forming a guide surface whose axis position and sectional geometric shape are in accordance with slide block movement track precision and rolling element contact precision. Three design concepts, i.e., one side or two side extruding tightening, pressurizing at the center of a rollway and two side extruding tightening, and fine finishing of grooves and two side extruding tightening, can be employed for pressing in of the rolling element.

Description

The raceway body is pressed into design theory in a kind of rolling guide-rail pairs

Technical field

The present invention relates to a kind of precision and move the package assembly of using the rolling guide-rail pairs middle guide, be usually used in equipment manufacture, be particularly suitable for IT industry and industrial automation industry.

Background technique

Mostly to be rolling element circulating for the linear rail by-product of Shi Yonging in the market, and what its guide rail used substantially is the steel overall structure.Recently have research to use the guide rail matrix to separate the fabricated structure of using two kinds of unlike materials with raceway, I also have multiple invention and utility model patent to relate to this kind guide rail structure.

Because the structure that does not have a kind of standard is assembled in inlaying of combined type raceway body, limit self elastic force is held in dependence commonly used habitual tightly, and to hold the mode fastening force of fixing raceway body tightly little, as shown in Figure 1, hold distance between the two-end-point on limit tightly at the C connected in star of guide rail matrix both sides less than the diameter of raceway body, raceway body outside being positioned at groove is when groove advances, the holding the limit tightly and can be made a concession and produce resiliently deformable of both sides by raceway body extruding, be pressed in the groove up to the raceway body, both sides hold the limit elastic recoil tightly, hold the raceway body tightly.

This kind mode is subjected to the restriction of guide rail matrix elasticity power, and the elastic deformation amount can be very not big, and it is limited that it holds power tightly, and the raceway body is loosening easily, causes the guide rail of made to have shortcomings such as loosening easily, that working life is not long.

Summary of the invention

The invention provides the design theory that is pressed into of raceway body in a kind of rolling guide-rail pairs.

Advantage of the present invention is:

1. the limit mode is held in the one or both sides extruding tightly, can obtain holding tightly more greatly power, can effectively increase the service life, and packaging technology is also very simple.

2. exert pressure in raceway center, and the limit mode is held in the both sides extruding tightly, except that having the 1st advantage, also have the raceway of increase body assembling area of contact, strengthen surface of contact hardness, improve characteristics such as raceway position precision, so working life is longer, and running precision is higher.

3. fine finishing groove (B1), the limit mode is held in the both sides extruding tightly, and the raceway area of contact is bigger, positional accuracy is higher, so longer service life, and running precision is higher.

4. three kinds of mounting types among the present invention all have easy processing, simple installation, the raising common feature in working life.

Description of drawings

Fig. 1 is the habitual at present guide rail sectional view that the limit natural elasticity is held mode tightly of holding tightly.

Fig. 2 is that the guide rail sectional view of limit mode is held in the one or both sides extruding tightly among the present invention.

Fig. 3 is that the guide rail sectional view of limit mode is held in the both sides extruding of exerting pressure of raceway center tightly among the present invention.

Fig. 4 is the A portion enlarged view among Fig. 3.

?

Embodiment:

In a kind of rolling guide-rail pairs the raceway body be pressed into design theory, guiding pairs is made up of guide rail matrix and raceway body.As shown in Figure 2, its middle guide matrix (1) uses certain that comprise aluminum alloy to have the light metal of sufficient intensity and rigidity, materials such as the higher Bearing Steel of raceway body (2) working strength and hardness, spring steel.The raceway body is inlayed in the groove (B1) that is installed in guide rail matrix both sides, forms the slideway that a group of axial location, cross-sectional geometry meet slide block movement path accuracy and rolling element contact precision.

When using the one or both sides extruding to hold the limit mode tightly, as shown in Figure 2, because of groove (B1a) is J font or the U font that is made of a semi-circular arc (B3a) and or two straight lines (B4), raceway body (2) can directly be put groove (B1a) into, limit (B2a) is held in extruding tightly makes it to produce plastic deformation, produce the enough big power of holding tightly, thereby raceway body (2) is tightly embraced.

Exert pressure when using the raceway center, when the limit mode is held in the both sides extruding tightly, shown in Fig. 3,4, because groove (B1) is subjected to the restriction of technology, its facial contour precision may not reach the design accuracy of high requirement, make the positional accuracy and the stability of raceway body (2) not enough, as shown in Figure 4, have gap (B5) between extruding forward recess (B1) and raceway body (2).Use a kind of device with certain position precision that raceway body (2) is exerted pressure, the surface that groove (B1) is contacted with the raceway body produces the plastic deformation shown in texturing zone among Fig. 4 (B6), has increased area of contact, has improved positional accuracy.Simultaneously limit (B2) is held tightly in both sides and push and hold tightly, make it to produce plastic deformation, thereby raceway body (2) is tightly embraced.

For using the fine finishing groove, the mode on limit is held in the both sides extruding tightly, its objective is to carry out precision machining to not reaching the groove (B2a) of making precision, makes it meet required precision after raceway body (2) is installed fully.

In sum, the structure of four kinds of raceway body assembling modes disclosed by the invention all has and makes common features such as simple, easy for installation, with low cost.Under the prerequisite that can satisfy job requirement, can reduce user's cost of investment greatly.

Claims

In the rolling guide-rail pairs raceway body be pressed into design theory, its structure comprises guide rail matrix (1) and raceway body (2), raceway body (2) is pressed in the groove (B1) that is embedded in guide rail matrix both sides, it is characterized in that: the mode that is pressed into of raceway body (2) can use the one or both sides extruding to hold the limit mode tightly, exert pressure in the raceway center, limit mode and fine finishing groove (B1) are held in the both sides extruding tightly, and three kinds of design theories of limit mode are held in the both sides extruding tightly.
2. the raceway body is pressed into design theory in a kind of rolling guide-rail pairs according to claim 1, it is characterized in that: the limit mode is held in the extruding of said one or both sides tightly, its project organization comprises: be positioned at guide rail matrix (1) both sides, the cross section meets J-shaped or U-shaped groove (B1) that the semi-circular arc (B3) of raceway body section shape and one or two straight lines (B4) constitute, is arranged in holding limit (B2) tightly and being embedded in groove (B1) raceway body (2) of groove (B1) both sides.
3. the raceway body is pressed into design theory in a kind of rolling guide-rail pairs according to claim 1, it is characterized in that: the limit assembling mode is held in the extruding of said one or both sides tightly, its design theory is: the limit (B2) of holding tightly to groove (B1) both sides of putting into raceway body (2) applies the external force extruding, make it to produce permanent plastic deformation to raceway body (2) direction, thereby produce the power of enough holding tightly to raceway body (2), raceway body (2) just can be fixed.
4. the raceway body is pressed into design theory in a kind of rolling guide-rail pairs according to claim 1, it is characterized in that: exert pressure in said raceway center, the limit mode is held in the both sides extruding tightly, be that said raceway body (2) in the claim 3 is applied a direction and the parallel pressure of U-shaped groove (B1) side straight line (B4), make groove (B1) bottom produce plastic deformation, and produce bigger surface of contact and higher positional accuracy with raceway body (2), simultaneously limit (B2) is held tightly in both sides and push and hold tightly.
5. the raceway body is pressed into design theory in a kind of rolling guide-rail pairs according to claim 1, it is characterized in that: said fine finishing groove (B1), the limit mode is held in the both sides extruding tightly, be that said groove (B1) in the claim 3 is carried out precision machining, make it to adhere to specification with the contact precision and the positional accuracy of raceway.