JP3233759U - Roller indexing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller type indexing mechanism capable of improving a problem of wear between an indexing member and an indexing board.
A roller-type indexing mechanism includes a rotating shaft, an indexing structure, a plurality of shaft pins 25, and a plurality of pushing members 24. The indexing structure includes an indexing board 21 and a plurality of indexing members 22 connected to the peripheral surface of the indexing board by penetrating the shaft pin. Each of the plurality of pushing members is arranged between the shaft pin and the indexing member, and the pushing member provides a pushing force so as to move the indexing member toward the indexing board. As a result, the adhesiveness between the indexing member and the indexing board is ensured. When the sleeve 23 is added between the indexing member and the indexing board, good adhesion between the indexing member and the sleeve is ensured. The rotation shaft is controlled to rotate, and by pushing the indexing member, the indexing board is driven to rotate.
[Selection diagram] Fig. 4

Description

The present invention relates to the configuration of a machining center machine, particularly to a roller indexing mechanism.

A machining center machine provided with a conventional rotary blade magazine is a mechanism that drives the blade magazine to rotate, and includes a rotation shaft and an indexing structure. The rotation shaft drives the indexing structure to rotate, and the rotation of the indexing structure rotates a turntable on which a plurality of blades connected to the indexing structure are mounted. As disclosed in "360 degree indexing device for clamp arm type blade magazine" of Chinese Invention Patent No. 1044936338B, in order to realize indexing control of blade replacement, on the peripheral edge of the indexing board of the indexing structure. Is connected to a plurality of spherical indexing members, a rotating shaft is arranged on one side of the indexing board, and the rotating shaft has a spiral groove capable of pushing the spherical indexing member.

However, when the bottom of the spherical indexing member disclosed in the above-mentioned patent document comes into direct contact with the peripheral surface of the indexing board and the rotating shaft pushes the spherical indexing member, the spherical indexing member rotates accordingly. be able to. As a result, friction is generated between the bottom of the spherical indexing member and the peripheral surface of the indexing board, and due to long-term action, they tend to wear each other and a gap may be formed. Due to the gap, the structure is loosened, the service life of the mechanism is shortened, and noise is generated. If the indexing board is manufactured of a high-rigidity material in order to reduce wear, the load on the entire mechanism increases and there is a risk of rusting.

In view of this, one object of the present invention is to provide a roller-type indexing mechanism for ensuring the adhesiveness between the indexing member and the indexing board.

To achieve the above object, the roller indexing mechanism of the present invention includes a rotating shaft, an indexing structure, a plurality of shaft pins and a plurality of pushing members. The peripheral surface of the indexing board has a plurality of pin holes provided in the radial direction, and the indexing structure includes the indexing board and a plurality of indexing members arranged on the peripheral surface of the indexing board. The indexing member has a shaft hole. The shaft pin penetrates the shaft hole of the indexing member and is inserted into the pin hole of the indexing board to regulate the position where the indexing member is connected to the indexing board. The pushing member is arranged to provide a pushing force so as to move the indexing member toward the indexing board. The rotation shaft is controlled to rotate, and by pushing the indexing member, the indexing board is driven to rotate.

Another object of the present invention is to provide a roller type indexing mechanism capable of improving the problem of wear between the indexing member and the indexing board.

To this end, the roller indexing mechanism according to one embodiment includes a plurality of sleeves, which have a ball joint and a through hole that penetrates the sleeve and communicates with the ball joint. The pin hole of the indexing machine includes a large hole portion and a small hole portion having a hole diameter smaller than that of the large hole portion. The sleeve is arranged in the large hole portion, the through hole of the sleeve communicates with the small hole portion, the indexing member has a spherical body through which the shaft hole penetrates, and the spherical body of the indexing member has a spherical body. , A part is located at the ball joint, the other part is exposed from the peripheral surface of the indexing board, the rotating shaft has a spiral groove, and the outer shell of the spherical body and the spiral groove of the rotating shaft. It is arranged so as to match the groove surface of. The sleeve is made of polyoxymethylene.

According to the present invention, the pushing force of the pushing member provides good adhesion between the indexing member and the indexing board or sleeve, and when the mechanism includes a sleeve, the indexing member is wear-resistant. Can be reduced and wear of the indexing member can be avoided.

It is a perspective view of the tapping ball machine including the roller type indexing mechanism which concerns on a preferable embodiment of this invention. It is a front view of FIG. 1 which omitted the indexing seat body of a tapping ball machine. Similar to FIG. 2, it is a front view of FIG. 1 in which a plurality of members are omitted and a rotation shaft and an indexing structure are reserved. It is a three-dimensional view of the indexing structure of the roller type indexing mechanism which concerns on the above-mentioned preferable embodiment of this invention. It is a partially enlarged perspective view of a part of the members of FIG. It is sectional drawing of line 6-6 of FIG.

In order to more clearly illustrate the present invention, preferred embodiments will be described in detail below with reference to the drawings. Referring to FIGS. 1 and 2, the roller indexing mechanism according to the preferred embodiment of the present invention includes a rotating shaft 10 and an indexing structure 20. The rotation shaft 10 is controlled to rotate, and is driven to rotate the indexing board 21 of the indexing structure 20. The roller-type indexing mechanism can be applied to, but is not limited to, the tapping ball machine 100 according to the present embodiment.

The tapping ball machine 100 described above includes a base portion 30, a support shaft 40, a turntable 50, an indexing seat 60, and a motor 70. One end of the support shaft 40 is fixed to the base portion 30, and the turntable 50 is rotatably fitted onto the support shaft 40 and is located on the side of the base portion 3. The indexing seat 60 is fixed to the other end of the support shaft 40, and the motor 70 is connected to the indexing seat 60. The rotation shaft 10 of the present embodiment penetrates the indexing seat 60 and is driven by the motor 70 to rotate. The indexing plate 21 of the indexing structure 20 is fitted onto the support shaft 40 and fixed to the rotating plate 50.

Referring to FIG. 3, the rotating shaft 10 of the present embodiment has a spiral groove 12. The indexing structure 20 includes a plurality of indexing members 22 arranged on the peripheral surface of the indexing board 21. The groove surface of the spiral groove 12 of the rotating shaft 10 is formed so as to be aligned with the outer shell of the indexing member 22. As a result, when the rotation shaft 10 is controlled by the motor 70 and rotates, the spiral groove 12 pushes the indexing member 22 to rotate the indexing board 21 together with the rotating board 50 for indexing. The purpose of control is achieved.

Hereinafter, a method of connecting the indexing member 22 to the peripheral surface of the indexing board 21 will be described. As shown in FIGS. 4 to 6, the indexing board 21 of the present embodiment has a substantially disk shape, and a mounting portion for connecting a plurality of indexing members 22 is connected to the peripheral surface. The mounting portion is composed of pin holes 211 provided along the radial direction. The pin hole 211 includes a large hole portion 211a and a small hole portion 211b having a smaller hole diameter than the large hole portion 211a. A plurality of side holes 212, for example, bolt holes are provided on the board surface on one side of the indexing board 21. Each of the plurality of side holes 212 communicates with the small hole portion 211b of the pin hole 211. Further, the indexing member 22 is made of stainless steel and has a spherical body 221 and a shaft hole 222 penetrating the spherical body 221. The outer shell of the spherical body 221 is arranged so as to be aligned with the groove surface of the spiral groove 12 described above. In the present embodiment, the shaft hole 222 includes a small diameter portion 222a and a large diameter portion 222b having a diameter larger than that of the small diameter portion 222a. A bottom wall 222c is formed at a portion of the small diameter portion 222a of the shaft hole 222 connected to the large diameter portion 222b.

The indexing structure 20 of the present embodiment further includes a plurality of sleeves 23, a plurality of pushing members 24, a plurality of shaft pins 25, and a plurality of positioning members 26. The sleeve 23 is made of polyoxymethylene (abbreviated as POM) having high rigidity and low friction properties. The sleeve 23 has a ball joint 23a and a through hole 23b that penetrates the sleeve 23 and communicates with the ball joint 23a, respectively. When assembling, the sleeve 23 is arranged in the large hole portion 211a of the pin hole 211 of the indexing board 21 so that the through hole 23b penetrates the corresponding small hole portion 211b, and the indexing member 22 corresponds to the sleeve 23. The ball joint 23a is arranged so that the curvature of the curved surface of the ball joint 23a is exactly aligned with the outer shell of the indexing member 22.

The pushing member 24 of the indexing structure 20 is a member that deforms when it receives pressure, returns to its original shape when the external force is removed, and generates a pushing force. In the present embodiment, the pushing member 24 is a hollow wave spring, but is not limited thereto. For example, it may be another compression spring. Each of the pushing members 24 is arranged in the large diameter portion 222b of the corresponding shaft hole 222 of the indexing member 22.

The shaft pin 25 of the indexing structure 20 includes a pin body 25a and a head portion 25b, and the head portion 25b is connected to one end of the pin body 25a and has a diameter larger than that of the pin body 25a. The pin body 25a has a tapered diameter-reduced portion 25c having a diameter smaller than that of other portions of the pin body 25a. When assembling, the pin body 25a is passed through the hollow portion of the pushing member 24, the shaft hole 222 of the indexing member 22, and the through hole 23b of the sleeve 23 in this order, and is formed into the small hole portion 211b of the pin hole 211 of the indexing board 21. After the insertion, the positioning member 26 such as the stop screw is locked in the side hole 212 of the indexing board 21 and arranged at a position closer to the shaft pin 25. As the positioning member 26 locks in and moves forward, a part of the positioning member 26 comes into contact with the tapered diameter-reduced portion 25c of the shaft pin 25, pushes the shaft pin 25 downward, and directs the shaft pin 25 toward the indexing board 21. To move. As a result, the shaft pin 25 is firmly connected to the indexing board 21 without being disengaged. Moreover, the shaft pin 25 regulates that the head portion 25b is located in the large diameter portion 222b of the shaft hole 222 of the indexing member 22, and the indexing member 22 is rotatably connected to the indexing board 21. The spherical main body 221 of the indexing member 22 is partially located at the ball joint 23a of the corresponding sleeve 23, and a part is exposed from the peripheral surface of the indexing board 21.

The push member 24 is restricted between the head portion 25b of the shaft pin 25 and the indexing member 22, that is, different ends of the push member 24 having high points and low points are the head portions 25b. It abuts on the bottom surface and the bottom wall 222c of the shaft hole 222 of the indexing member 22, respectively. Since the shaft pin 25 is fixed to the indexing board 21, the pushing force of the pushing member 24 can push the indexing member 22 so as to move toward the indexing board 21. As a result, the indexing member 22 and the ball joint 23a of the sleeve 23 have a good bonding effect. Since the sleeve 23 is located between the indexing member 22 and the indexing board 21 and has excellent wear resistance, it is easy to wear due to direct contact between the known indexing member and the indexing board, and wear. It is possible to improve the drawback of forming a gap due to the above. Further, when the sleeve 23 is made of a wear-resistant material, the indexing board 21 is made of a lightweight aluminum alloy, which makes it possible to reduce the weight and cost. Further, the pushing force of the pushing member 24 causes the indexing member 22 to continue moving toward the indexing board 21, which has the effect of automatically adjusting the gap.

In the above description, a part of the indexing member 22 is located at the ball joint 23a of the sleeve 23, but the sleeve 23 may be omitted as long as it does not affect the existing operation of the pushing member 24. A pin hole that is recessed directly from the peripheral surface of 21 and is provided along the ball joint and the radial direction and one end of which penetrates the bottom of the ball joint may be formed. As a result, one end of the shaft pin 25 is also inserted into the pin hole, and the indexing member 22 can be stably positioned at the ball joint. The indexing member described above is not limited to the spherical outer shell, and an indexing member having another outer shell may be used if necessary. The method of fixing the shaft pin 25 is not limited to using the above-mentioned stop screw, and the shaft pin may be provided with a male screw and a bolt hole for screwing into the shaft pin may be provided on the indexing board, or the shaft pin may be passed through the latch. However, the purpose of fixing can be realized.

The above is only a preferred embodiment of the present invention, and all equal changes in the specification of the present invention and the claims for utility model registration should be included in the scope of the claims for utility model registration of the present invention.

[Invention]
100: Tapping ball machine 10: Rotating shaft 12: Spiral groove 20: Indexing structure 21: Indexing board 211: Pin hole 211a: Large hole portion 211b: Small hole portion 212: Side hole 22: Indexing member 221: Spherical body 222: Shaft hole 222a: Small diameter portion 222b: Large diameter portion 222c: Bottom wall 23: Sleeve
23a: Ball joint 23b: Through hole 24: Push member 25: Shaft pin 25a: Pin body 25b: Head part 25c: Diameter reduction part 26: Positioning member 30: Base part 40: Support shaft 50: Rotating disk 60: For indexing Seat 70: Motor

Claims (9)

An indexing structure including an indexing board and a plurality of indexing members arranged on the peripheral surface of the indexing board, and the indexing board is controlled to rotate and the indexing board is rotated through the plurality of indexing members. In a roller-type indexing mechanism including a rotating shaft that is driven to cause
The peripheral surface of the indexing board has a plurality of pin holes provided in the radial direction.
Each of the plurality of indexing members has a shaft hole and has a shaft hole.
A plurality of shaft pins penetrate the shaft holes corresponding to the indexing members and are inserted into the pin holes corresponding to the indexing board so that the plurality of indexing members are connected to the indexing board. Regulate the positions of the plurality of indexing members,
A plurality of pushing members are arranged to provide a pushing force so as to move the corresponding indexing member toward the indexing board.
Roller type indexing mechanism. Each of the shaft pins penetrates the shaft hole of the indexing member and is connected to a pin body to be inserted into the pin hole of the indexing board and one end of the pin body, and has a diameter larger than that of the pin body. Including the head part
Each of the push members has different ends, one of which is in contact with the head portion of the shaft pin and the other of which is in contact with the indexing member.
The roller-type indexing mechanism according to claim 1. The shaft hole of the indexing member includes a small diameter portion through which the pin body of the shaft pin penetrates and a large diameter portion in which the head portion is located.
The pin body penetrates the pushing member and
One end of the pushing member is in contact with the bottom surface of the head portion, and the other end is in contact with the bottom wall of the large diameter portion of the indexing member.
The roller-type indexing mechanism according to claim 2. Including multiple sleeves
Each of the plurality of sleeves has a ball joint and a through hole that penetrates the sleeve and communicates with the ball joint.
The pin hole of the indexing machine includes a large hole portion and a small hole portion having a hole diameter smaller than that of the large hole portion.
The sleeve is located in the corresponding foramen magnum.
The through holes of the plurality of sleeves communicate with the corresponding small holes, respectively.
The rotating shaft has a spiral groove and has a spiral groove.
The plurality of indexing members have a spherical body through which the shaft hole penetrates.
Each of the spherical bodies of the indexing member is partially located at the corresponding ball joint, the other part is exposed from the peripheral surface of the indexing board, and the outer shell of the spherical body is the groove of the spiral groove of the rotating shaft. Arranged to match the surface,
The roller-type indexing mechanism according to any one of claims 1 to 3. The plurality of sleeves are made of polyoxymethylene.
The roller-type indexing mechanism according to claim 4. The rotating shaft has a spiral groove and has a spiral groove.
The peripheral surface of the indexing board has a plurality of ball joints formed by being recessed from the peripheral surface of the indexing board.
The ball joint communicates with the corresponding pin hole, respectively.
Each of the plurality of indexing members has a spherical body through which the shaft hole penetrates.
Each of the spherical bodies of the indexing member is partially located at the corresponding ball joint, and the other part is exposed from the peripheral surface of the indexing board. Arranged to match the surface,
The roller-type indexing mechanism according to any one of claims 1 to 3. Including multiple positioning members
The board surface of the indexing board has a plurality of side holes communicating with the pin holes, respectively.
The plurality of positioning members are arranged so as to penetrate the corresponding side holes and come into contact with the shaft pins to connect the shaft pins to the indexing board without disconnection.
The roller-type indexing mechanism according to any one of claims 1 to 3. Each of the shaft pins has a reduced diameter portion having a diameter smaller than that of other parts of the shaft pin.
The positioning member is located on the side deviated from the shaft pin, and a part of the positioning member is located on the reduced diameter portion.
The roller-type indexing mechanism according to claim 7. The plurality of pushing members are wave springs.
The roller-type indexing mechanism according to any one of claims 1 to 3.

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