JP3545012B2 - Method for manufacturing rail or slider body of linear guide device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a method for manufacturing a slider body of a guide rail or a slider, which is a component of a linear guide device as a linear guide bearing, and in particular, it is possible to form a high-precision load ball rolling groove and completely damage the surface without damage. The present invention relates to a method for manufacturing a rail or a slider body of a linear guide device capable of performing a rustproof surface treatment.
[0002]
[Prior art]
As a conventional linear guide device, for example, those shown in FIGS. 4 to 6 are known. In this linear guide device LG, a slider 2 having a substantially U-shaped cross section is laid on a guide rail 1 extending in the axial direction so as to be smoothly movable in the axial direction. On both side surfaces of the guide rail 1, ball-finished ball rolling grooves 3 are formed in the axial direction so as to be long in the axial direction, and the slider body 2A of the slider 2, as shown in FIG. A ball rolling groove 5 is formed on the inner surface of each of the sleeve portions 4 so as to face the load ball rolling groove 3 of the guide rail. A large number of unillustrated load balls as rolling elements are rotatably loaded between the opposed load ball rolling grooves 3 and 5, and the slider 2 is guided by an infinite circulation motion of the load balls. 1 above.
[0003]
Due to the infinite circulation motion of the ball, a through hole 6 as a ball return passage is formed in the thickness of the sleeve portion 4 of the slider body 2A in parallel with the loaded ball rolling groove 5, and the slider body 2A A U-shaped curved path (not shown) is formed on the end cap 2B having a substantially U-shaped cross section fixed to the front and rear end surfaces 7 of the ball. The ball rolling groove 5 and the ball return path 6 communicate with each other through the curved path. To form an infinite circulation path of the ball. In order to fix the end cap 2B with bolts, screw holes 8 are formed in both front and rear end surfaces 7 of the slider body 2A.
[0004]
Such a linear guide device LG is installed, for example, by fixing the guide rail 1 to the machine bed B by bolts and fixing the slider 2 to the machine table T by bolts as shown in FIG. Guide T straight. Therefore, a plurality of mounting bolt holes 9 penetrating from the upper surface 1a to the lower surface 1cs of the guide rail 1 are formed at intervals in the axial direction. On the slider 2, screw holes 10 are formed at four corners of the upper surface 2 a of the slider main body 2 </ b> A.
[0005]
In installing the linear guide device LG, first, the guide rail 1 and the slider 2 of the reference-side linear guide device LGs are fixed, and the mounting is performed by adjusting the linear guide device LG on the adjustment side. Therefore, the mounting reference surface 1cs is formed on the lower surface of the guide rail 1 in contact with the mounting reference surface Bs of the machine bed B, and the mounting reference surface 1bs is formed on a part of the side surface 1b by grinding. A mounting reference surface 2as is formed on the upper surface 2a of the slider main body 2A in contact with the mounting reference surface Ts of the machine table T, and a mounting reference surface 2bs is formed on a part of the side surface 2b by grinding.
[0006]
The processing finish accuracy of each mounting reference surface 1cs, 1bs, 2as, 2bs on the guide rail 1 and the slider 2 of the linear guide device LGs on the reference side greatly affects the accuracy of the linear guide of the device. Therefore, lubricating oil containing a rust inhibitor is supplied to each of the load ball rolling grooves 3 and 5 without subjecting the guide rail 1 and the slider body 2A, which are generally formed by machining a steel material, to a special rust prevention surface treatment. By doing so, rust prevention was performed also as lubrication.
[0007]
For this reason, the load ball rolling grooves 3 and 5 to which lubricating oil is constantly supplied and the ball return passage 6 in which the ball circulates do not easily cause rust, and there is no particular problem, but the outer surface of the guide rail 1 to which lubricating oil is not supplied. Also, there has been a problem of rust generation on the surface of the slider body 2A. On the other hand, in Japanese Patent Publication No. 55555/1990, a hardenable steel material is subjected to mechanical processing such as an outer shape of a bearing block (slider body), a loaded ball rolling groove, a ball return passage, and a mounting reference surface. Then, a method of manufacturing a bearing slide (slider) in which the bearing block body is quenched and a plating layer is formed by black chrome plating, and then the mounting reference surface and the loaded ball rolling groove are ground. Have been.
[0008]
[Problems to be solved by the invention]
However, in the method of manufacturing a slider of a linear guide device disclosed in Japanese Patent Publication No. 2-55515, a slider body in which a load ball rolling groove, a ball return path, a mounting reference plane, a screw hole, and the like are machined. Is coated with black chrome, a rust-preventive plating layer is formed on the entire surface including those processed parts, and then mounted on a grinding machine. Grind the loaded ball rolling groove. For this reason, the following problem has occurred.
[0009]
(1) When mounted and held on a grinding machine, parts other than the mounting reference surface and the loaded ball rolling groove (the part where the black chrome plating layer is desired to be left) may be scratched or the plating layer may come off. It does not exhibit a sufficient rust prevention function due to rolling.
{Circle around (2)} When manufacturing a high-precision linear guide device in which a dimensional error of 1 to 2 μm is a problem, if a plating film adheres to the mounting reference surface even if the thickness is 1 to 2 μm, the adhered film is Is not appropriate for the production of such high-precision products, because accuracy is no longer assured due to the influence of.
[0010]
Accordingly, the present invention has been made in view of such conventional problems, and has as its object to provide a method for manufacturing a rail or slider body of a linear guide device which does not require machining after surface treatment. I do.
[0011]
[Means for Solving the Problems]
The first aspect of the present invention for achieving the above object, chromatic and guide rail having an axial loaded ball rolling groove on the side surface, the loaded ball rolling grooves opposed to the loaded ball rolling groove of the guide rail When manufacturing the guide rail of a linear guide device provided with a slider that relatively moves in the axial direction of the guide rail through the rolling of a number of balls rolling in the opposing load ball rolling groove, After grinding and finishing the load ball rolling groove formed at a predetermined position on the outer surface of the rail, the protective surface having a circular cross-sectional shape having a size corresponding to the shape and size of the load ball rolling groove is formed on the ground surface. It is characterized in that a rod is attached and a rust-proof surface treatment is applied to the guide rail.
[0012]
According to a second aspect of the present invention, there is provided a guide rail having an axial load ball rolling groove on a side surface, and a load ball rolling groove opposed to the load ball rolling groove of the guide rail. When manufacturing the slider body of the slider of the linear guide device having a slider that relatively moves in the axial direction of the guide rail through the rolling of a large number of balls rolling in the load ball rolling groove, After grinding the load ball rolling groove formed at a predetermined location, a protective rod having a circular cross-sectional shape having a size corresponding to the shape and size of the load ball rolling groove is attached to the ground surface. A rustproof surface treatment is applied to the slider body.
According to a third aspect of the present invention, there is provided a guide rail having an axial load ball rolling groove on a side surface, and a load ball rolling groove opposed to the load ball rolling groove of the guide rail. When manufacturing the guide rail of the linear guide device including a slider that relatively moves in the axial direction of the guide rail through the rolling of a large number of balls rolling in the rolling groove, a predetermined portion of the outer surface of the guide rail is manufactured. After grinding and finishing the load ball rolling grooves formed in the above, a protective rod having a size corresponding to the shape and dimensions of the load ball rolling grooves and a circular cross-sectional shape of a circular shape is formed on the ground surface. The guide rails are attached by magnetic force and are subjected to rust-proof surface treatment.
According to a fourth aspect of the present invention, there is provided a guide rail having an axial load ball rolling groove on a side surface, and a load ball rolling groove opposed to the load ball rolling groove of the guide rail. When manufacturing the slider body of the slider of the linear guide device having a slider relatively moving in the axial direction of the guide rail through the rolling of a large number of balls rolling in the rolling groove, a predetermined portion of the slider body is manufactured. After grinding and finishing the load ball rolling grooves formed in the above, a protective rod having a size corresponding to the shape and dimensions of the load ball rolling grooves and a circular cross-sectional shape of a circular shape is formed on the ground surface. It is characterized in that the slider body is subjected to a rust-proof surface treatment by being attached by magnetic force.
[0013]
[Action]
Protection bars mounted on the grinding surface finish, rust surface treatment film already groove surface of the load ball rolling grooves that have been ground finished is prevented from adhering. Therefore, high-precision production is possible.
In addition, there is no need to perform machining after forming the rust-preventive surface treatment, and the rust-preventive surface-treated film is not damaged.
[0014]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same or corresponding parts as those in the related art are denoted by the same reference numerals.
1 and 2 show an intermediate step in manufacturing the guide rail 1 of the present invention.
[0015]
In order to manufacture the guide rail 1 of the present invention, first, a steel material is drawn to form an outer shape of the guide rail 1. A wire groove for passing the retainer wire is cut into the bottom of the loaded ball rolling groove 3 of the drawn material. Thereafter, heat treatment is performed. Next, the mounting bolt hole 9 is drilled.
Next, four planes of the guide rail upper surface 1a, the side surface 1b (including the mounting reference surface 1bs), and the lower surface 1cs are ground and finished. Next, the loaded ball rolling groove 3 is ground. The groove grinding is performed by simultaneously grinding the grooves on both sides of the rail.
[0016]
After that, the protective material 11 is attached to the ground and finished surface, masked, and then subjected to a rust-preventive surface treatment such as chrome plating or nickel plating.
The mounting of the protection member 11 on the loaded ball rolling groove 3 after the grinding finish processing is performed as shown in FIG. The protection member 11 in this case is a protection rod 11B having a size corresponding to the shape and size of the load ball rolling groove 3, which is fitted and fixed to each load ball rolling groove 3 on both side surfaces 1b. . As a fixing method of the protective bar 11B may be any one which does not mask the surface rust surface treatment is performed, across the left and right sides of the protective bar 11B of the guide rail 1 in a large clothespin not shown in this embodiment Fix it.
[0017]
In addition, the protection member 11 is mounted on the mounting reference surfaces 1bs and 1cs after the grinding finish processing as shown in FIG. The protection member 11 in this case is a protection plate 11Pb having a size corresponding to the mounting reference surface 1bs on the side surface and a protection plate 11Pc having a size corresponding to the mounting reference surface 1cs on the lower surface, and is fixed to each surface. . The fixing method is as follows. In the case of the protection plate 11Pb for masking the side mounting reference surface 1bs, the protection plate 11Pb is formed of a magnetic metal and magnetized, and is fixed to the guide rail 1 made of steel by suction. I do. On the other hand, in the case of a protection plate 11Pb for masking the lower reference mounting surface 1cs, a screw hole 12 is formed in the protection plate 11Pb, and a bolt inserted through the mounting bolt hole 9 of the guide rail 1 into the screw hole 12 is used. 13 is fixed by screwing and tightening.
[0018]
In the above embodiment, only the protection plate 11Pb of the mounting reference surface 1bs on the side surface of the guide rail 1 is magnetized and used. However, the present invention is not limited to this, and the protection bar 11B of the load ball rolling groove 3 and the mounting reference surface of the lower surface are used. By using a magnetized one also for the 1 cs protective plate 11Pc, the protective plate 11Pc may be fixed without using a fixture such as a clothespin or a screw 13.
The material of the protective material 11 may be a metal or a non-metal in principle as long as it can perform masking by rust-preventive surface treatment. In the case of a material which is magnetized and fixed, a magnetic metal such as iron is used. It is preferable to use rubber, plastics, or the like molded by mixing magnetic metal powder.
[0019]
The manufacture of the slider body 2A of the present invention is also basically performed in accordance with the manufacture of the guide rail 1. That is, first, a steel material is drawn to form the outer shape of the slider body 2A. Next, the drawn material is subjected to drilling machining such as a ball return passage 6, screw holes 8 at both front and rear end surfaces 7, and screw holes 10 into which mounting bolts 13 at four corners of the upper surface 2a are screwed.
[0020]
Next, a heat treatment is performed, and thereafter, the three planes of the upper surface 2a and the side surface 2b (including the mounting reference surface 2bs) are each subjected to grinding finishing. Next, the loaded ball rolling groove 5 is ground.
Thereafter, as shown in FIG. 3, the protective material 11 (11B, 11Pa, 11Pb) is attached and masked on the ground-finished surface, and then a rust-preventive surface treatment such as chrome plating or nickel plating is performed.
[0021]
The above-mentioned masking of the finished surface is performed as follows.
In this embodiment, a magnetized protective rod 11B having a size corresponding to the shape and size of the load ball rolling groove 5 is fitted into each of the load ball rolling grooves 5 in the present embodiment. Combine and fix with magnetic force.
The protection member 11 is attached to the mounting reference surface 2as on the upper surface by a protection plate 11Pa having a size corresponding to the mounting reference surface 2as on the upper surface and having a bolt insertion hole 14 corresponding to the screw hole 10 of the mounting bolt 13. Is fixed by mounting bolts 13 as shown in FIG.
[0022]
The mounting reference surface 2bs is masked by using a protective plate 11Pb formed of a magnetic metal and magnetized on the side surface reference mounting surface 2bs and adsorbing and fixing the protection plate 11Pb to the steel slider body 2A. I do.
It is also possible to use a protective plate 11Pa formed of a magnetic metal and magnetized with respect to the mounting reference surface 2as on the upper surface, and to adsorb and fix the slider body 2A.
[0023]
Note that the linear guide device to which the manufacturing method of the present invention is applied is not limited to the above-described embodiment. That is, in the embodiment, the type in which the slider is externally extended over the guide rail is described. However, the type in which the slider is provided inside the concave guide rail may be used, and the rolling element rolling grooves may be arranged in two rows on one side. Other than that may be used.
Further, the case where a ball is used as a rolling element has been described, but the present invention can also be applied to a case using a roller.
[0024]
【The invention's effect】
As described above, according to the first aspect of the present invention, the load ball rolling groove formed at a predetermined position on the outer surface of the guide rail of the linear guide device is subjected to the grinding finish processing, and the load is applied to the ground finish processing surface. A protection rod having a size corresponding to the shape and size of the ball rolling groove was attached, and a rust-proof surface treatment was applied to the guide rail. Therefore, it is not necessary to facilities machining grinding or the like after the anticorrosive surface treated as in the prior art, or scratched antirust coating by machining grinding or the like, can be peeled off is antirust coating there is no order, there is an effect that can exhibit a sufficient anti-corrosion effect.
Further, according to the second aspect of the present invention, the load ball rolling groove formed at a predetermined position of the slider body of the linear guide device is subjected to grinding finish processing, and the shape of the load ball rolling groove is formed on the ground processing surface. A protection rod having a size corresponding to the size was attached, and a rust-proof surface treatment was applied to the slider body. Therefore, the same effects as those of the first invention are provided.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating masking of a ball rolling groove at the time of surface treatment processing in manufacturing a guide rail according to the present invention.
FIG. 2 is a perspective view illustrating masking of an attachment reference surface.
FIG. 3 is a perspective view illustrating masking of a ball rolling groove or a mounting reference surface during surface treatment processing in manufacturing a slider according to the present invention.
FIG. 4 is an overall perspective view of the linear guide device.
FIG. 5 is a perspective view of a slider body of the linear guide device.
FIG. 6 is an explanatory view of a use mode of the linear guide device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guide rail 1bs Mounting reference surface 2 Slider 2A Slider body 2as Mounting reference surface 2bs Mounting reference surface 3 Load rolling element rolling groove (of guide rail) 5 Load rolling element rolling groove 11 (of slider) Protective material

Claims (4)

A guide rail having an axial load ball rolling groove on a side surface, and a plurality of load rails having load ball rolling grooves opposed to the load ball rolling grooves of the guide rail and rolling in the opposed load ball rolling grooves. When manufacturing the guide rail of the linear guide device including a slider that relatively moves in the axial direction of the guide rail through the rolling of the ball,
After grinding the load ball rolling groove formed at a predetermined position on the outer surface of the guide rail , the cross-sectional shape of the grinding finished surface is circular with a size corresponding to the shape and size of the load ball rolling groove. A method of manufacturing a rail for a linear guide device, wherein a rust-proof surface treatment is applied to a guide rail by attaching a protection rod of the invention. A guide rail having an axial load ball rolling groove on a side surface, and a plurality of load rails having load ball rolling grooves opposed to the load ball rolling grooves of the guide rail and rolling in the opposed load ball rolling grooves. When manufacturing the slider body of the slider of the linear guide device having a slider that relatively moves in the axial direction of the guide rail through the rolling of the ball,
After grinding the load ball rolling groove formed at a predetermined portion of the slider body, the protection surface having a circular cross section having a size corresponding to the shape and size of the load ball rolling groove is formed on the ground surface. A method of manufacturing a slider body of a linear guide device, wherein a rust-proof surface treatment is applied to the slider body by attaching a rod. A guide rail having an axial load ball rolling groove on the side surface, and a plurality of load rails having load ball rolling grooves opposed to the load ball rolling grooves of the guide rail and rolling in the opposing load ball rolling grooves. When manufacturing the guide rail of the linear guide device including a slider that relatively moves in the axial direction of the guide rail through the rolling of the ball,
After grinding the load ball rolling groove formed at a predetermined location on the outer surface of the guide rail, the cross-sectional shape of the grinding finished surface is circular with a size corresponding to the shape and size of the load ball rolling groove. A method for manufacturing a rail for a linear guide device, wherein the guide bar is subjected to a rust-preventive surface treatment by attaching the protective bar according to (1) by a magnetic force of the protective bar. A guide rail having an axial load ball rolling groove on the side surface, and a plurality of load rails having load ball rolling grooves opposed to the load ball rolling grooves of the guide rail and rolling in the opposing load ball rolling grooves. When manufacturing the slider body of the slider of the linear guide device having a slider that relatively moves in the axial direction of the guide rail through the rolling of the ball,
After grinding the load ball rolling groove formed at a predetermined portion of the slider body, the protection surface having a circular cross-sectional shape corresponding to the shape and size of the load ball rolling groove is formed on the ground surface. A method for manufacturing a slider body of a linear guide device, wherein a rust-proof surface treatment is applied to the slider body by attaching a rod by the magnetic force of the protection rod.

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