JP2649745B2 - Ball mounting method for linear sliding ball bearings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a ball in a linear sliding ball bearing.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional linear sliding ball bearing.

The structure is such that ball rolling grooves are formed on the left and right sides and up and down.
The rail 51 having the base 50 formed thereon, the sleeves 54 are hung on the left and right sides of the horizontal part 53 to form a recess 55 between the horizontal part 53 and the left and right sleeves 54, and the load ball grooves 56 are formed on the inner surfaces of the left and right sleeves 54. A slide body 58 having a no-load ball track 57 is provided in the sleeve portion 54 so as to correspond to the load ball groove 56, and the load ball groove 56 and the no-load A resin cap (not shown) having two left and right return grooves corresponding to the ball track 57 is provided, and the ball rolling groove 50, the loaded ball groove 56, and the unloaded ball track 57 of the track base 51 are provided.
A ball retainer 60 having a ball projection window 59 shown in FIG. 6 is formed by the horizontal portion 53 and the left and right sleeve portions 54. The return groove forms a ball infinite circulation path of four balls in total in the upper, lower, left and right directions. Into the recess 55, and the ball 52
And a slide guide body that holds the ball 52 with a ball holder 60. The slide guide body is fitted on the track base 51, and the slide guide body is mounted on the track base 51. It is a structure provided slidably.

[0004]

Since the prior art shown in FIGS. 5 and 6 has the above-mentioned structure, it has a disadvantage that the work of arranging the ball 52 in the infinite ball circulation path is very troublesome.

A specific description will be given.

[0006] The work of arranging the ball 52 is performed first by a slide body.
A cap having a return groove is fastened to one end surface of the ball 58, the ball holder 60 of FIG. 6 is fastened to the inner surface of the slide body 58, and the slide body 58 with the cap is set up to load the ball holder 60 with the load. Insert the balls 52 one by one into the balls 57 into the voids formed by the ball grooves 56 and the no-load ball orbit 57, and after inserting the predetermined balls 52, finally put another cap on the end face of the slide body 58. Take the means of attaching.

However, the arrangement of the ball 52 is
Is inserted into the no-load ball orbit 57 having a diameter substantially equal to the ball diameter formed by the load ball groove 56 and the ball retainer 60, and the ball 52 cannot be inserted easily. It is troublesome.

Further, since a predetermined number of balls 52 must be provided in the ball infinite circulation path, when a cap is finally provided, grease or the like is applied to the return groove of the cap, and the grease is applied. A number of balls 52 are attached so that the total number of balls becomes a predetermined number, and a cap is fixed so that the balls 52 do not fall down. The task is troublesome and cannot be automated at present.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and provides a method of assembling a ball in a linear sliding ball bearing which can easily arrange the ball.

[0010]

The gist of the present invention will be described with reference to the accompanying drawings.

A track body a in which upper and lower two-stage ball rolling grooves 1 are formed on both left and right sides, and a sleeve part 4 is hung on the left and right sides of the horizontal part 3 so that a slide body 7 is formed by the horizontal part 3 and the left and right sleeve parts 4. Are formed on the inner surfaces of the left and right sleeves 4 of the slide body 7 respectively.
Stepped load ball grooves 5 are provided, and the respective load ball grooves 5 are provided.
And a no-load ball track 6 is bored in the sleeve 4
A cap 9 in which a load ball groove 5 and a return groove 8 corresponding to a no-load ball track 6 are formed on front and rear end surfaces of a slide body 7.
The ball rolling groove 1 and the loaded ball groove 5, the no-load ball track 6, and the return groove 8 of the track base a form a total of four ball infinite circulation paths, two on each of the left and right sides. A ball guide for linear sliding, comprising a plurality of slide guides b on which a large number of balls 2 are disposed, wherein the ball 2 disposed in the upper load ball groove 5 on the inner surface of the left and right sleeves 4. The ball holding member 10 for holding the upper portion and the ball holding member 11 for holding the lower portion of the ball 2 disposed in the lower load ball groove 5 on the inner surface of the left and right sleeve portions 4 are fixed to the inner surface of the slide body 7. At the same time, the cap 9 is fastened to the front and rear end surfaces of the slide body 7, and then the ball holding members 10 and 11 and the slide body 7 with the cap 9 are brought into a state where the left sleeve 4 is in contact with the ground. Load ball 2 on the left Lumpur 5 grooves and the unloaded ball path 6
Then, the lower part and the left sleeve 4 of the ball 2 disposed in the load ball groove 5 on the upper side of the inner surface of the left sleeve 4
A ball holding elastic member 13 for simultaneously holding the upper portion of the ball 2 disposed in the load ball groove 5 on the lower side of the inner surface is fixed to the inner surface of the slide body 7, and the ball holding elastic member 13 and the ball holding member 10 and 11 hold the balls 2 disposed in the upper and lower load ball grooves 5 on the inner surface of the left sleeve portion 4, and subsequently, in the same manner, on the right load ball groove 5 and the no-load ball track 6.
A number of balls 2 and the ball holding elastic member 13 which is turned to
The present invention relates to a method of assembling a ball in a linear sliding ball bearing, characterized in that the ball is held by ball holding members 10 and 11, and the assembling of the ball 2 to the slide guide body b is completed as described above.

[0012]

With the ball holding members 10 and 11 and both caps 9 fixed to the slide body 7, the outer surface of the left sleeve 4 is placed on a table, for example, so that the slide body 7 is in a horizontal state. When a large number of balls 2 are simultaneously thrown into the upper and lower load ball grooves 5 on the inner surface of the left sleeve 4 while slightly swinging, the balls 2 move through the return grooves 8 to the no-load ball tracks 6. , And the arrangement of the ball 2 in the ball infinite circulation path on the left side is completed. When the arrangement of ball 2 is completed, the left side
The ball provided in the upper load ball groove 5 on the inner surface of the sleeve 4
Load ball on the lower side of the lower part 2 and the inner side of the sleeve 4 on the left side.
A ball holding elastic member 13 for simultaneously holding the upper portion of the ball 2 provided in the groove 5 is provided at a predetermined position on the inner surface of the left sleeve portion 4 , and the ball holding elastic member 13 and the aforementioned Ball holding member 10
・ Allocated at 11 to the upper and lower load ball grooves 5 on the inner surface of the left sleeve 4
The ball 2 provided is held.

[0013] Then, right sleeve portion 4 the outer surface is placed on the table similarly large number and introduced simultaneously to the ball 2 to the right of the ball endless circulation path, the ball holding elastic member 13 and the ball holding member
The ball 2 is held between 10 and 11.

The slide guide member b is assembled in this manner, and is used by assembling it with the track base a.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention in which a total of four ball endless circulation paths are formed.

The ball holding elastic member 13 shown in the drawing is made of steel (or a hard plastic material), and its bent portion is bent inward as shown in FIG.
13 ′ is formed so that the ball holding elastic member 13 does not fall out of the locking recess 12.

The drawing shows a case where locking recesses 12 are formed at the front and rear end faces of the slide body 7 at two positions between the upper and lower load ball grooves 5 for locking the ends of the ball holding elastic members 13 respectively. However, the locking recess 12 in which the end of the ball holding elastic member 13 is locked is located on the outer surface of each of the right and left caps 9 and is located between the upper and lower ball infinite circulation paths (the upper and lower return grooves). The position may be any position as long as the ball 2 at the upper and lower load ball grooves 5 can be held by the ball holding elastic member 13.

A bent portion corresponding to the bent portion 13 'of the ball holding elastic member 13 is formed in the locking concave portion 12 in the drawing.

Reference numeral 15 denotes a concave groove for facilitating attachment and detachment of the ball holding elastic member 13, and reference numeral 14 denotes a concave portion.

The remaining structure is the same as that of the conventional example.

[0021]

Since the present invention is constructed as described above, when arranging the balls in the ball infinite circulation path, a space (formed by a ball retainer and a load ball groove) substantially equal to the ball diameter as in the conventional example is used. The ball can be inserted from a wide gap between the left and right sleeves instead of inserting the ball into the empty space and the unloaded ball trajectory, so that the arrangement of the ball can be performed very easily.

The present invention has a structure in which the ball holding elastic member is mounted later. Since the side surface of the load ball groove is not closed by the ball retainer as in the conventional example, even if the ball is thrown in, Even if the ball does not enter the loaded ball groove, the ball is naturally disposed on the loaded ball simply by slightly swinging the slide body by hand.

If the side face of the load ball groove is closed by the ball retainer and the opening is formed only at the end of the load ball groove as in the conventional example, the ball is naturally only opened from the opening. Cannot be arranged in the load ball groove, and if the ball erroneously moves out of the opening, the ball may be dropped.

In this regard, as described above, the present invention provides a ball endless circulation path (simple operation) in which a plurality of balls are placed on the palm of one hand and simultaneously dropped on the inner surface of the sleeve portion to slightly swing the slide body. The arrangement of the balls in the loaded ball groove, the unloaded ball track, etc.) is completed.

Further, according to the present invention, only one cap is fixed to the slide body and the other cap is not finally fixed, but both caps are fixed to the front and rear end surfaces of the slide body. As described in the section of the conventional example, the work of applying grease to the return groove of the cap is not required at all, so that the ball can be automatically arranged. Become.

The ball holding elastic member is provided on the inner surface of the sleeve.
Lower part and sleeve of the ball arranged in the upper load ball groove
The upper part of the ball arranged in the lower load ball groove on the inner surface
Are held in the upper and lower load ball grooves at the same time.
Ball can be held by one member at the same time.
Therefore, workability is improved accordingly.

The present invention has an epoch-making effect of changing the extremely troublesome work of arranging the balls in the actual assembling of the linear sliding ball bearing into a very simple work. In addition, a highly accurate and inexpensive product can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the present embodiment.

FIG. 2 is a front sectional view of the present embodiment.

FIG. 3 is an enlarged view of a main part of the embodiment.

FIG. 4 is a sectional view taken along a line AA in FIG. 3;

FIG. 5 is an explanatory diagram of a conventional example.

FIG. 6 is an explanatory diagram of a conventional example.

[Description of Signs] a Rail way b Slide guide body 1 Ball rolling groove 2 Ball 3 Horizontal part 4 Sleeve part 5 Load ball groove 6 No-load ball track 7 Slide body 8 Return groove 9 Cap 10 Ball holding member 11 Ball holding member 13 Ball holding elastic member

Claims (1)

(57) [Claims] 1. A track base a in which two upper and lower ball rolling grooves 1 are formed on both left and right sides, and a sleeve part 4 is hung on the left and right sides of a horizontal part 3 to slide between the horizontal part 3 and the left and right sleeve parts 4. The slide body 7 is formed.
The upper and lower two-stage load ball grooves 5 are provided on the inner surfaces of the left and right sleeve portions 4, respectively.
And a cap 9 in which a load ball groove 5 and a return groove 8 corresponding to the no-load ball track 6 are formed on the front and rear end faces of the slide body 7.
The ball rolling groove 1 and the loaded ball groove 5, the no-load ball track 6, and the return groove 8 form a total of four ball infinite circulation paths, two on the left and right sides, and a number of balls 2 are disposed in the ball infinite circulation path. A ball guide for holding the upper portion of the ball 2 disposed in the upper load ball groove 5 on the inner surface of the left and right sleeves 4. A ball holding member 11 for holding the lower portion of the ball 2 disposed in the load ball groove 5 on the lower side of the inner surface of the member 10 and the left and right sleeves 4 is fixed to the inner surface of the slide body 7. The cap 9 is fastened to the front and rear end faces of the ball, and the ball holding members 10.11 and the slide body 7 with the cap 9 are placed in a state where the left sleeve 4 is in contact with the ground. 5 grooves and no load The lower ball 2 disposed in the upper load ball groove 5 on the inner surface of the left sleeve 4 and the lower load ball groove 5 on the inner surface of the left sleeve 4 A ball holding elastic member 13 for simultaneously holding the upper portion of the ball 2 disposed on the slide body 7 is fixed to the inner surface of the slide body 7, and the ball holding elastic member 13 and the ball holding members 10. 4 holds the balls 2 disposed in the upper and lower load ball grooves 5 on the inner surface, and subsequently moves the ball 2 to the right load ball groove 5 and the no-load ball track 6 in the same manner.
Ball holding the entered number of balls 2 elastic member 13 and the ball
Ball assembling method in the linear sliding ball bearing, characterized in that holding by the Lumpur holding member 10, 11 to complete the assembly of the ball 2 to the slide guide body b as described above.