JP6514809B1 - Rolling ball bolt kit and method of using the same - Google Patents

Abstract

To provide a rolling ball bolt kit capable of effectively expanding the number of times of double use. A rolling ball bolt kit has a helical bolt grooved tub 91 on a bolt 90, a first nut set has a first nut and a set of first rolling balls, and the first nut is a first nut. The inner surface of the first hole has a spiral first nut grooved bath, and each first rolling ball and the inner wall surface of the first nut grooved bath contact each other at a predetermined contact angle, and the second The nut set has a second nut, a set of a plurality of second rolling balls, the second nut having a second bore, and a helical second nut grooved bath on the inner surface of the second bore, each The contact between the second rolling ball and the inner wall surface of the second nut groove is made at a predetermined contact angle, the contact angle of the second nut set and the contact angle of the first nut set are different, and the first nut set is combined with the bolt The first nut set is used on the bolt for the first abrasion track 1 If the formation of the exchange to the second nut set. [Selected figure] Figure 7

Description

  The present invention relates to rolling ball bolt kits, and more particularly to rolling ball bolt kits and methods of using the same.

The main components of rolling ball bolts are bolts, nuts and many rolling balls (steel balls) and other accessories.
It makes use of the rotation of the bolt to interlock the rolling balls and provide a cyclic rolling contact between the bolt and the nut, thereby providing a linear motion with the nut.
Rolling ball bolts have high localization accuracy, long life, low contamination, high-speed forward / backward transmission and conversion transmission, and so on. It is one of the important parts.

In order to increase the accuracy of the rolling ball bolt, a certain pre-pressure is applied when assembling the rolling ball bolt.
Thereby, the rolling ball makes a close contact with the pre-installed contact angle between the bolt and the nut.
Therefore, after use for a certain period of time, not only the rolling ball itself is worn away, but also a locus of wear loss occurs at the position of the bolt and nut and rolling ball contact (pre-installed contact angle position).
In this way, the problems of reduced localization accuracy and poor transmission smoothness occur.

A common solution to this is to replace the entire rolling ball bolt, ie all the bolts, nuts and rolling balls and other accessories, replace it with a new rolling ball bolt, and ensure positioning accuracy and transmission smoothness. .
However, this increases the maintenance cost of the equipment.
Also, since bolts are the most difficult parts to machine, their cost is also the highest, and if they are replaced too often, the cost of the contractor will increase and the bolts can not be used effectively.

  In the prior art described above, the entire rolling ball bolt is replaced in order to solve the problems of reduced localization accuracy and poor transmission smoothness, but this has the disadvantage of increasing maintenance costs.

  The present invention relates to a rolling ball bolt kit capable of effectively extending the number of times of double use of a bolt and thus extending the service life of the bolt and achieving a cost reduction effect and a method of using the same.

The rolling ball bolt kit according to the present invention comprises a bolt, a first nut set, a second nut set, and a third nut set.
On the outer surface of the bolt, there is a screw groove tank exhibiting a spiral shape, and the first nut set has a first nut and a set of first rolling balls.
The first nut has a first bore, and the inner surface of the first bore has a first nut grooved bath exhibiting a spiral shape, and each first rolling ball has the first nut grooved bath And each of the first rolling balls and the inner wall surface of the first nut groove tank make contact at a predetermined contact angle, and the rolling ball contact angle and the other half side of the first nut groove tank half side The rolling ball contact angle of has an opposite direction.
The second nut set has a second nut and a set of second rolling balls.
The second nut has a second bore, and the inner surface of the second bore has a second nut grooved bath exhibiting a spiral shape, and each of the second rolling balls has a second nut grooved bath And each of the second rolling balls and the inner wall surface of the second nut groove tank make contact at a predetermined contact angle, and the rolling ball contact angle and the other half side of the second nut groove tank half side The rolling ball contact angles in the present invention exhibit opposite directions, and the contact angles of the second nut set and the first nut set are different.
Thereby, the first nut set and the second nut set are independently used in combination with the bolt in an exchange manner, whereby the first nut set is placed on both sides of the bolt groove tank inner wall surface of the bolt, The first abrasion track is formed by abrasion, and the second nut set is formed by abrading the second abrasion track on both sides of the inner wall surface of the bolt groove tank of the bolt. The second abrasion trajectories do not overlap each other.
As a result, the service life of the bolt can be extended and maintenance costs can be reduced.

The method of using the rolling ball bolt kit further provided by the present invention includes the following steps.
On the outer surface of the bolt, there is a screw groove tank exhibiting a spiral shape.
The first nut set has at least a first nut and a set of first rolling balls.
The first nut has a first bore, the first bore is placed through the bolt, and the inner face of the first bore has a first nut groove bath exhibiting a spiral shape, Each first rolling ball is placed in the first nut groove and the bolt groove.
The respective first rolling balls and the inner wall surface of the first nut groove tank and the inner wall surface of the bolt groove tank are in contact at a predetermined contact angle, and the rolling ball contact angle on the half side of the first nut groove tank and the other The half rolling ball contact angles exhibit opposite directions.
With a second set of nuts being spares, the second set of nuts having at least a second nut and a set of a plurality of second rolling balls, the second nut having a second bore, the second The inner surface of the two bores has a second nut grooved vessel exhibiting a helical shape, each second rolling ball being placed in the second nut grooved vessel, each second rolling ball and the second The rolling ball contact angle on the half side of the second nut groove tank and the rolling ball contact angle on the other half have opposite directions, and contact with the inner surface of the nut groove tank at a predetermined contact angle. The contact angle of the nut set and the contact angle of the first nut set are different.
If the first nut set is formed on each side of the bolt groove tank inner wall surface of the bolt by abrasion, the first nut set is removed from the bolt, and the second nut set is removed. The second nut set is used by replacing the bolt kit, and the second nut set is formed by abrading the second abrasion path on both sides of the bolt groove tank inner wall surface of the bolt, and the first abrasion path and the second Abrasion trajectories do not overlap each other.
As a result, the service life of the bolt can be extended and maintenance costs can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is arrangement | positioning schematic diagram of the volt | bolt of this invention 1st embodiment, a nut, and a rolling ball. It is a cross-sectional schematic diagram by the side of the bolt and nut of embodiment shown in FIG. 1, and shows the rolling ball contact angle of a nut. It is an abrasion loss schematic diagram of the bolt in embodiment shown in FIG. It is a cross-sectional schematic diagram by the side of the bolt and nut of embodiment shown in FIG. 1, and shows that the rolling ball contact angle of a nut is 40 degrees. It is a cross-sectional schematic diagram by the side of the bolt and nut of embodiment shown in FIG. 1, and shows that the rolling ball contact angle of a nut is 50 degrees. It is a cross-sectional schematic diagram by the side of the bolt and nut of embodiment shown in FIG. 1, and shows that the rolling ball contact angle of a nut is 60 degrees. It is an abrasion loss schematic diagram of the bolt in embodiment shown in FIG. It is the arrangement | positioning schematic diagram of the volt | bolt of this invention 2nd embodiment, a nut, and a rolling ball. FIG. 9 is a schematic cross-sectional view of the bolt of the embodiment shown in FIG. 8 and the two first nuts, showing that the rolling ball contact angles of the two first nuts are 40 degrees in the opposite direction. FIG. 9 is a schematic cross-sectional view of the bolt of the embodiment shown in FIG. 8 and two second nuts, showing that the rolling ball contact angles of the two second nuts are 50 degrees in the opposite direction. FIG. 9 is a cross-sectional schematic view of the bolt of the embodiment shown in FIG. 8 and two third nuts, showing that the rolling ball contact angles of the two third nuts are 60 degrees in the opposite direction. FIG. 9 is a schematic view of abrasion of a bolt in the embodiment shown in FIG. 8;

(One embodiment)
As shown in FIGS. 1 to 7, the rolling ball bolt kit 100 according to the first embodiment of the present invention has a bolt 90, a first nut set 10, a second nut set 20, and a third nut set 30.

  As shown in FIG. 1 and FIG. 2, on the outer surface of the bolt 90, there is provided a bolt groove tank 91 exhibiting a helical shape.

As shown in FIGS. 1 and 4, the first nut set 10 has a first nut 11 and a set of first rolling balls 12.
The first nut 11 has a first bore 111.
On the inner surface of the first bore 111, there is provided a first nut groove tank 112 exhibiting a helical shape.
Each first rolling ball 12 is a number of steel balls.
Each first rolling ball 12 is placed in a first nut groove tank 112 of the first nut 11.
The contact angle between each first rolling ball 12 and the inner wall surface of the first nut groove tank 112 is 40 degrees.
The rolling ball 12 contact angle on the half side of the nut groove tank 112 and the rolling ball contact angle on the other side have opposite directions (see FIG. 1).

As shown in FIG. 5, the second nut set 20 has a second nut 21 and a plurality of second rolling balls 22.
The second nut 21 has a second perforation 211.
The inner surface of the second perforation 211 has a second nut groove tank 212 exhibiting a helical shape.
Each second rolling ball 22 is a number of steel balls.
Each second rolling ball 22 is placed in a second nut groove tank 212 of the second nut 21.
The contact angle between each second rolling ball 22 and the inner wall surface of the second nut groove tank 212 is 50 degrees.
The rolling ball contact angle on the half side of the nut groove tank 212 and the rolling ball contact angle on the other side have opposite directions.

As shown in FIG. 6, the third nut set 30 has a third nut 31 and a set of third rolling balls 32.
The third nut 31 has a third bore 311.
The inner surface of the third bore 311 has a third nut groove tank 312 exhibiting a helical shape.
Each second rolling ball 32 is a number of steel balls.
Each third rolling ball 32 is placed in the third nut groove tank 312 of the third nut 31.
The contact angle between each third rolling ball 32 and the inner wall surface of the third nut groove tank 312 is 60 degrees.
The rolling ball contact angle on the half side of the nut groove tank 312 and the rolling ball contact angle on the other side have opposite directions.

The above is the introduction of each component of the rolling ball bolt kit 100 according to the first embodiment of the present invention.
Subsequently, the assembly method and features of its use are introduced.

First, a bolt 90 is placed through the first bore 111 of the first nut set 10.
Thereby, the first rolling ball 12 is positioned in the bolt groove tank 91 of the bolt 90 and the first nut groove tank 112 of the first nut 11 and applies a pre-pressure to the bolt 90 and the first nut set 10.
As a result, the first rolling ball 12 and the inner wall surface of the bolt groove tank 91 of the bolt 90 and the inner wall surface of the first nut groove tank 112 of the first nut 11 come in close contact (see FIG. 4). Degrees.
The second nut set 20 and the third nut set 30 are spares.

After using the bolt 90 and the first nut set 10 for a certain period of time, the first rolling ball 12 is abraded to form the first abrasion trace 13 on both sides of the bolt groove tank 91 inner wall surface of the bolt 90 (FIG. 2) , See Figure 3).
The inner wall surface of the first nut groove tank 112 of the first nut 11 is also abraded away to form a locus, and when the processing accuracy is reduced, the first nut set 10 is removed from the bolt 90.

Subsequently, a bolt 90 is placed through the second bore 211 of the second nut set 20.
Thereby, the second rolling ball 22 is positioned in the bolt groove tank 91 of the bolt 90 and the second nut groove tank 212 of the second nut 21, and applies a pre-pressure to the bolt 90 and the second nut set 20.
As a result, the second rolling ball 22 and the inner wall surface of the bolt groove tank 91 of the bolt 90 and the inner wall surface of the second nut groove tank 212 of the second nut 21 come in close contact (see FIG. 5). Degrees.

After use of the bolt 90 and the second nut set 20 for a certain period of time, both inner wall surfaces of the bolt groove tank 91 of the bolt 90 are abraded to the second rolling ball 22 to form a second abrasion path 23 (FIG. 7) reference).
The inner wall surface of the second nut groove tank 212 of the second nut 21 is also abraded away to form a locus, and when the processing accuracy is reduced, the second nut set 20 is removed from the bolt 90 and the bolt 90 The upper second abrasion locus 23 does not overlap with the first abrasion locus 13.

Finally, a bolt 90 is placed through the third bore 311 of the third nut set 30.
As a result, the third rolling ball 32 is positioned in the bolt groove tank 91 of the bolt 90 and the third nut groove tank 312 of the third nut 31, and applies a pre-pressure to the bolt 90 and the third nut set 30.
As a result, the third rolling ball 32 and the inner wall surface of the bolt groove tank 91 of the bolt 90 and the inner wall surface of the third nut groove tank 312 of the third nut 31 come in close contact (see FIG. 6). Degrees.

After use of the bolt 90 and the third nut set 30 for a certain period of time, both inner wall surfaces of the bolt groove tank 91 of the bolt 90 are abraded to the third rolling ball 32 to form a third abrasion track 33 (FIG. 7) reference).
The inner wall surface of the third nut groove tank 312 of the third nut 31 is also worn away.
Thereby, when processing accuracy falls, the 1st nut set 10 is removed from bolt 90 top, and the 3rd abrasion loss locus 33 on bolt 90 does not overlap with the 1st abrasion loss locus 13 and the 2nd abrasion loss locus 23 .
Remove the bolt 90 and the third nut set 30 and replace the rolling ball bolt kit 100 anew.

In the present invention, the contact angle of the first nut set 10 is 40 degrees.
The contact angle of the second nut set 20 is 50 degrees.
The contact angle of the third nut set 30 is 60 degrees.
In the bolt 90, the first abrasion trajectory 13, the second abrasion trajectory 23, and the third abrasion trajectory 33 are formed, and the first abrasion trajectory 13, the second abrasion trajectory 23, and the third abrasion trajectory 33 do not overlap.
Therefore, the bolt 90 in the present invention is used correspondingly to the first nut set 10, the second nut set 20, and the third nut set 30, respectively, and does not affect the positioning accuracy, and the service life of the bolt 90 It can be tripled and the maintenance cost for bolt 90 replacement can be reduced significantly.

  As shown in FIGS. 8 to 12, the rolling ball bolt kit 200 according to the second embodiment of the present invention is the same as the above embodiment, and a bolt 90, a first double nut set 40, a second double nut set 50, a third double It has a nut set 60.

The main differences between the two are as follows.
In the present embodiment, the first double nut set 40 adopts a double nut type.
That is, the first double nut set 40 has two first nuts 41 and two sets of first rolling balls 42 connected to each other.
Each first nut 41 has a first bore 411 and the inner surface of each first bore 411 has a helical first nut grooved bath 412.
The contact angle between each first nut 41 and each first rolling ball 42 is 40 degrees, and the contact angle between the first nut 41 and the first rolling ball 42 and another first nut 41 and another first rolling The contact angles of the balls 42 exhibit opposite directions (see FIG. 9).

The second double nut set 50 adopts a double nut type.
That is, the second double nut set 50 has two second nuts 51 and two sets of second rolling balls 52 connected to each other.
Each second nut 51 has a second bore 511, and the inner surface of each second bore 511 has a helical second nut groove tank 512.
The contact angle between each second nut 51 and each second rolling ball 52 is 50 degrees.
Moreover, the contact angles of the second nut 51 and the second rolling ball 52 and the contact angles of the other second nut 51 and the other second rolling ball 52 exhibit opposite directions (see FIG. 10).

The third double nut set 60 adopts a double nut type.
That is, the third double nut set 60 has two third nuts 61 and two sets of third rolling balls 62 connected to each other.
Each third nut 61 has a third bore 611 and the inner surface of each third bore 611 has a helical second nut grooved vessel 612.
The contact angle between each third nut 61 and each third rolling ball 62 is 60 degrees.
Moreover, the contact angles of the third nut 61 and the third rolling ball 62 and the contact angles of the other third nut 61 and the other third rolling ball 62 exhibit opposite directions (see FIG. 10).

As a result, after the bolt 90 and the first double nut set 40 are combined and used for a certain period of time, the first abrasion loss trajectory 43 and the fourth abrasion loss trajectory 44 are formed on the bolt 90 by abrasion.
After the bolt 90 and the second double nut set 50 are combined and used for a certain period of time, the second abrasion loss trajectory 53 and the fifth abrasion loss trajectory 54 are formed on the bolt 90 by abrasion.
After the bolt 90 and the third double nut set 60 are combined and used for a certain period of time, the third abrasion track 63 and the sixth abrasion track 63 are formed by abrasion on the bolt groove tank 91 of the bolt 90, and The abrasion loss trajectory 43, the fourth abrasion loss trajectory 44, the second abrasion loss trajectory 53, the fifth abrasion loss trajectory 54, the third abrasion loss trajectory 63, and the sixth abrasion loss trajectory 64 do not overlap with each other (see FIG. 12).

  Thereby, the rolling ball bolt kit according to the present invention and the method of using the same can be operated not only on single nut type but also on double nut type, and the range of use thereof can be expanded. Can also be used to extend the service life of the bolt 90.

  The embodiments of the invention described above do not limit the invention, so the scope protected by the invention is based on the claims described below.

<First Embodiment of the Present Invention>
100 rolling ball bolt kit 90 bolt 91 bolt groove tank 10 first nut set 11 first nut 111 first perforation 112 first nut groove tank 12 first rolling ball 20 second nut set 21 second nut 211 second perforation 212 second hole Two nut grooved tank 22 second rolling ball 30 third nut set 31 third nut 311 third bored hole 312 third nut grooved tank 32 third rolling ball 13 first abrasion track 23 second abrasion track 33 third abrasion track Second Embodiment of the Invention>
200 rolling ball bolt kit 90 bolt 91 bolt groove tank 40 first double nut set 41 first nut 411 first hole 412 first nut groove tank 42 first rolling ball 50 second double nut set 51 second nut 511 second hole 512 second nut grooved tank 52 second rolling ball 60 third double nut set 61 third nut 611 third bored hole 612 third nut grooved tank 62 third rolling ball 43 first abrasion track 44 fourth abrasion track 53 second abrasion Trajectory 54 fifth abrasion loss trajectory 63 third abrasion loss trajectory 64 sixth abrasion loss trajectory

Claims (8)

A rolling ball bolt kit comprising a bolt, a first nut set, a second nut set, and a third nut set,
On the outer surface of the bolt, there is a screw groove tank exhibiting a helical shape,
The first nut set comprises a first nut and a set of first rolling balls, the first nut having a first bore and the inner face of the first bore being helical. The respective first rolling balls are placed in the first nut grooved bath, and it is scheduled between the respective first rolling balls and the first nut grooved bath inner wall surface. The rolling ball contact angle on the half side of the first nut groove tank and the rolling ball contact angle on the other half have opposite directions,
The second nut set comprises a second nut and a set of second rolling balls, the second nut having a second bore and the inner face of the second bore being helical. The respective second rolling balls are placed in the second nut grooved bath, and it is scheduled between the respective second rolling balls and the second nut grooved bath inner wall surface. The rolling ball contact angle on the half side of the second nut groove tank and the rolling ball contact angle on the other side have opposite directions, and the contact angle of the second nut set and the first nut set The contact angle is different,
Thereby, the first nut set and the second nut set are used in combination with the bolt independently in an exchange system, whereby the first nut set is provided on both sides of the bolt screw groove inner wall surface of the bolt, The first wear track is formed by grinding, and the second nut set is formed by grinding the second wear track on both sides of the inner surface of the bolt screw groove of the bolt. A rolling ball bolt kit characterized in that the two abrasion tracks do not overlap with each other. The rolling ball bolt kit further comprises a third set of nuts,
The third nut set comprises a third nut and a set of third rolling balls, the third nut having a third bore and the inner face of the third bore being helical. The respective third rolling balls are placed in the third nut grooved bath, and the space between the third rolling balls and the third nut grooved inner wall surface is scheduled to be provided. The rolling ball contact angle on the half nut groove side and the rolling ball contact angle on the other half have opposite directions, and the contact angle of the third nut set and the first nut set The contact angle and the contact angle of the second nut set are different,
The third nut set is used in combination with the bolt independently in a replacement method, and the third nut set is formed by abrading a third abrasion locus on both sides of the bolt screw groove inner wall surface of the bolt. The rolling ball bolt kit according to claim 1, wherein the first wear track, the second wear track and the third wear track do not overlap with each other. The rolling ball bolt kit has a bolt, a first double nut set, a second double nut set,
On the outer surface of the bolt, there is a screw groove tank exhibiting a helical shape,
The first double nut set has two first nuts and two sets of first rolling balls, and the two first nuts are integrally connected, and each first nut has a first hole. And the inner surface of each of the first perforations has a first nut grooved bath exhibiting a helical shape, and the two sets of first rolling balls correspond to the corresponding first nut grooved bath. Between the first set of rolling balls and the corresponding first nut groove tank inner wall face placed at a predetermined contact angle,
The contact angle between the first nut of the first double nut set and its first rolling ball and the contact angle between the other first nut and the other first rolling ball exhibit opposite directions,
The second double nut set includes two second nuts and two sets of a plurality of second rolling balls, the two second nuts are integrally connected, and each of the second nuts is a second hole. And the inner surface of each of the second perforations has a second nut grooved bath exhibiting a helical shape, and the two sets of second rolling balls correspond to the second nut grooved bath corresponding thereto. Between the second set of rolling balls and the corresponding second nut groove tank inner wall face placed at a predetermined contact angle,
The contact angle between the second nut of the second double nut set and its second rolling ball and the contact angle between the other second nut and another second rolling ball exhibit opposite directions, and the second The contact angle of the double nut set and the contact angle of the first double nut set are different.
Thereby, the first double nut set and the second double nut set are used in combination with the bolt independently in an exchange system, whereby the first double nut set is formed of the bolt screw groove inner wall surface of the bolt. The first abrasion track and the fourth abrasion track are formed by grinding on both sides, and the second double nut set is formed on the both sides of the bolt screw groove inner wall surface of the bolt, the second abrasion track and the fifth abrasion track. A rolling ball bolt kit characterized in that the first abrasion loss trajectory, the fourth abrasion loss trajectory, the second abrasion loss trajectory, and the fifth abrasion loss trajectory do not overlap with each other. The rolling ball bolt kit further comprises a third double nut set,
The third double nut set includes two third nuts and two sets of third rolling balls, the two third nuts are integrally connected, and each third nut has a third hole. And the inner surface of each of the third perforations has a third nut grooved bath exhibiting a helical shape, and the two sets of third rolling balls correspond to the corresponding third nut grooved baths. Between the third set of rolling balls and the corresponding inner surface of the third nut groove tank, which are placed inside, with a predetermined contact angle,
The contact angle between the third nut of the third double nut set and its third rolling ball and the contact angle between the other third nut and the other third rolling ball exhibit opposite directions, and the third The contact angle of the double nut set is different from the contact angle of the first double nut set and the contact angle of the second double nut set,
The third double nut set is used in combination with the bolt independently in an exchange system, and the third double nut set is formed on the both sides of the bolt screw groove inner wall surface of the bolt, a third abrasion loss track, a sixth abrasion loss track The first abrasion loss trajectory, the fourth abrasion loss trajectory, the second abrasion loss trajectory, the fifth abrasion loss trajectory, the third abrasion loss trajectory, and the sixth abrasion loss trajectory do not overlap each other. The rolling ball bolt kit described in 3. The method of using the rolling ball bolt kit includes the following steps:
On the outer surface of the bolt, there is a screw groove tank exhibiting a helical shape,
The first nut set comprises at least a first nut and at least one set of a plurality of first rolling balls, the first nut having a first bore and the first bore being installed through the bolt And the inner surface of the first bore has a first nut grooved bath exhibiting a helical shape, each first rolling ball being placed in the first nut grooved bath, each first rolling ball Contact with the first nut groove tank inner wall surface at a predetermined contact angle,
A second set of nuts is a reserve, said second set of nuts having at least a second nut and at least one set of a plurality of second rolling balls, said second nut having a second bore, said second The inner surface of the bore has a second nut grooved bath exhibiting a spiral shape, and each of the second rolling balls is placed in the second nut grooved bath, and each of the second rolling balls and the second nut Between the grooved tank inner wall and the inner wall surface, contact is made at a predetermined contact angle, and the contact angle of the second nut set and the contact angle of the first nut set are different.
Once the first nut set has formed on the bolt a first abrasion path by abrasion, the first nut set is removed from the bolt and replaced with the second nut set and the bolt kit. And the second nut set forms a second abrasion path on the bolt by abrasion, and the first abrasion path and the second abrasion path do not overlap with each other. how to use. The method of using the rolling ball bolt kit further uses a spare third nut set
The third nut set comprises at least a third nut and at least one set of a plurality of third rolling balls, the third nut having a third bore, and an inner surface of the third bore being a spiral And each third rolling ball is placed in the third nut grooved tank, and the space between each third rolling ball and the third nut grooved inner wall surface is Contact at a predetermined contact angle, and the contact angle of the third nut set and the contact angle of the first nut set and the contact angle of the second nut set are different,
If the second nut set is formed on the bolt by abrasion, the second nut set is removed from the bolt and replaced with the third nut set and the bolt kit. The third nut set is characterized in that a third attrition trajectory is formed by attrition on the bolt, and the first attrition trajectory, the second attrition trajectory and the third attrition trajectory do not overlap with each other. A method of using the rolling ball bolt kit according to claim 5. The third nut set is a third double nut set, and the third double nut set has two third nuts and two sets of third rolling balls connected to each other. The contact angle between the third nut and its third rolling ball and the contact angle between the other third nut and the other third rolling ball exhibit opposite directions. To use the rolling ball bolt kit. The first nut set is a first double nut set, and the first double nut set has two first nuts and two sets of second rolling balls connected to each other.
The contact angle between the first nut of the first nut set and its first rolling ball and the contact angle between the other first nut and the other first rolling ball exhibit opposite directions,
The second nut set is a second double nut set, and the second double nut set includes two second nuts and two sets of second rolling balls connected to each other, and the second nut set The contact angle between the second nut and its second rolling ball and the contact angle between another second nut and another second rolling ball exhibit opposite directions. How to use rolling ball bolt kit.

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