JP6719912B2 - Rotation transmission mechanism - Google Patents

Description

The present invention relates to a rotation transmission mechanism, and more specifically, to a rotation transmission mechanism that is capable of relatively sliding in an axial direction while a shaft and a rotating body rotate integrally.

There are various mechanisms for fixing the shaft and the rotating body to transmit the rotational force, and a spline is mentioned as a mechanism capable of transmitting a large torque (for example, Patent Document 1 below). FIG. 5 shows the structure of a general spline. 5A is a sectional view taken along the axial direction of the spline, and FIG. 5B is a sectional view taken along line #C-#C of FIG. 5A and seen in the direction of the arrow. As shown in FIGS. 5(A) and 5(B), the spline 300 has a key groove 322 in which the keys 312 of the shaft 310 are inserted into the outer circumference of a shaft 310 in which a plurality of keys 312 are provided at equal intervals on the outer circumference. Has a structure in which the rotating body 320 formed on the inner peripheral surface is inserted. With such a structure, the rotation of the shaft 310 and the rotating body 320 is relatively prevented, so that the rotation of the rotating body 320 can be transmitted to the shaft 310 via the key 312. Further, as another rotation transmission mechanism, a groove for inserting a key for fixing the shaft and the rotating body in the rotation direction is formed in both the shaft and the rotating body, and the key is driven into the groove of the shaft and fixed. There is one side driving key structure.

JP2012-63017A

However, in the above-mentioned general spline structure, the rotating body side (female side) on which the key groove is provided is extremely difficult to polish because the key groove is polished by broaching. Further, since there is always play (gap) between the key and the key groove, there is a disadvantage that the groove and the key do not contact the entire surface. Even in the above-mentioned one-side driven key structure, it is difficult to perform polishing on the inner diameter side, so that the same disadvantage occurs that the groove and the key do not contact the entire surface.

The present invention focuses on the above points, and in a rotation transmission mechanism in which a shaft and a rotating body are relatively slidable in the axial direction of the shaft and can rotate integrally, ensure the rotational force. It is an object of the present invention to provide a rotation transmission mechanism capable of transmitting the rotation.

The present invention is a rotation transmitting mechanism, wherein a rotating body arranged on the outer periphery of a shaft is slidable relative to the shaft in the axial direction of the shaft, and rotates integrally with the shaft, A slide groove formed along the axial direction on either the outer periphery of the shaft or the rotating body, and a cross section orthogonal to the axial direction has a pair of side surfaces facing each other, and the slide groove. And a rectangular parallelepiped piece having a pair of side surfaces that is movable in the axial direction along the slide groove and that contacts only a pair of opposite side surfaces of the slide groove, and one end side of the piece A connecting pin that is fixed and has the other end fixed to either the shaft or the rotating body on the other side.

One of the main forms is characterized in that the slide groove is formed on the outer periphery of the shaft, and one end side of the connecting pin is fixed to the top and the other end side is fixed to the rotating body side. .. One of the other main forms is characterized in that the slide groove is formed in the rotating body, one end side of the connecting pin is fixed to the top, and the other end side is fixed to the shaft side. To do.

Another mode is characterized in that the connecting pin is fixed by fitting into a recess or a through hole provided in the top. Still another mode is characterized in that a plurality of the slide grooves are provided, and each of the slide grooves accommodates the frame. The above and other objects, features and advantages of the present invention will be apparent from the following detailed description and the accompanying drawings.

According to the present invention, the rotating body arranged on the outer periphery of the shaft is a rotation transmitting mechanism which is slidable relative to the shaft in the axial direction of the shaft and which rotates integrally with the shaft. A slide groove formed along one of the outer periphery of the shaft and the rotating body along the axial direction and having a cross section orthogonal to the axial direction having a pair of opposed side surfaces, A rectangular parallelepiped piece that is housed in a slide groove, is movable in the axial direction along the slide groove, and has a pair of side surfaces that only come into contact with a pair of opposite side surfaces of the slide groove; A connecting pin fixed to the top and the other end of which is fixed to the other of the shaft and the rotating body. Therefore, the tolerance between the side surface of the top and the side surface of the slide groove is made small, and the rotational force is reliably transmitted by surface contact in a state of high rigidity and wear resistance, so that it can be applied to the application of the rotation transmission mechanism. .. In particular, it is suitable when the shaft and the rotating body need to slide relative to each other.

It is a figure which shows Example 1 of this invention, (A) is sectional drawing which shows the principal part of this Example, (B-1) cut|disconnects said (A) along the line #A-#A, and shows it. Sectional view seen in the direction, (B-2) is a partially enlarged view of the (B-1), and (C) is a view showing the top and the connecting pin of the present embodiment. It is a figure which shows the automatic tool changer using the said Example 1. It is a figure which shows Example 2 of this invention, (A) is sectional drawing which shows the principal part of this Example, (B) is the top view which looked at said (A) from arrow F3 direction, (C-1) Is a cross-sectional view of (A) taken along line #B-#B and seen in the direction of the arrow, and (C-2) is a partially enlarged view of (C-1). It is a figure which shows the automatic tool changer using the said Example 2, and a prior art example. It is a figure which shows the spline of background art, (A) is sectional drawing which shows the principal part, (B) is sectional drawing which saw the said (A) along line #C-#C, and was seen in the arrow direction. ..

Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

First, Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view showing a main part of the rotation transmission mechanism of the present embodiment, (B-1) is a cross-sectional view of (A) taken along line #A-#A and viewed in the arrow direction, ( (B-2) is a partially enlarged view of the above (B-1), and (C) is a view showing the top and the connecting pin of this embodiment. FIG. 2 is a diagram showing an automatic tool changer using the rotation transmission mechanism of this embodiment. In the rotation transmission mechanism of the present invention, a rotating body provided on the outer periphery of the shaft is integrally rotatable and relatively slidable in the axial direction. Although applicable, the present embodiment will be described assuming that the present invention is applied to the output shaft 16 of the automatic tool changer 90, as shown in FIG.

The automatic tool exchanging device 90 is for exchanging an old tool on the spindle of a machine tool with a new tool on the tool pot side by rotating and advancing (sliding) the output shaft. As shown in FIGS. 1 and 2, the automatic tool changer 90 of the present embodiment is connected to the output shaft 16 (shaft) rotatably and slidably supported in the main body case 12 and the cam shaft 56. The worm wheel 60 and the roller gear cam 38, the input shaft 66 rotatably supported by the main body case 12, the drive means for rotating the input shaft 66, the cam lever 70, the link 72, the shift lever 74, and the output. The rotation transmission mechanism 10 holds the shaft 16 rotatably and slidably in the axial direction.

One end 16A side of the output shaft 16 rotatably and slidably penetrates the holder 14 provided in the main body case 12, and a tool exchange arm (not shown) is provided at the tip thereof, for example. ing. A turret 30 (rotating body) that supports the outer periphery of the output shaft 16 so as to be capable of reciprocating in the axial direction and that rotates integrally with the output shaft 16 is provided on the other end 16B side of the output shaft 16. Has been. The turret 30 is rotatably held in the main body case 12 by a holder 32 having a bearing and the like.

A plurality of balls 34 are provided on the outer peripheral surface of the turret 30 at appropriate intervals. The balls 34 are attracted and held by magnets 36 provided in a plurality of concave portions having curved surface portions provided at regular intervals on the outer peripheral surface of the turret 30. In this embodiment, since the turret 30 is made of a magnetic material or magnetic material, the magnet 36 is attracted to the turret 30 by magnetic force. The balls 34 are also made of a magnetic material and are attracted to the magnets 36. When the ball 34 of the turret 30 and a groove (not shown) of the roller gear cam 38 are engaged with each other, when the roller gear cam 38 rotates, the output shaft 16 rotates together with the turret 30.

In the rotation transmission mechanism 10 of the output shaft 16, a turret 30 arranged on the outer periphery of the output shaft 16 is slidable relative to the output shaft 16 in the axial direction thereof and is integral with the output shaft 16. It is for rotating. The rotation transmission mechanism 10 includes slide grooves 22 and 24 formed on the outer peripheral surface of the output shaft 16 along the axial direction, a piece 50 housed in the slide grooves 22 and 24, and the piece 50. And a connecting pin 54 for connecting the turret 30 with the above.

In the illustrated example, two slide grooves 22 and 24 are formed at positions facing each other along the axial direction of the output shaft 16. A cross section of the slide groove 22 taken along a plane orthogonal to the axial direction of the output shaft 16 has a pair of side surfaces 22A and 22B facing each other as shown in FIGS. 1(B-1) and (B-2). It has a substantially rectangular shape having a bottom surface 22C. Further, the top 50 is a substantially rectangular parallelepiped that can slide in the axial direction along the slide groove 22. Then, as shown in FIG. 1B-2, among the side surfaces 50A to 50D of the top 50, the side surfaces 50A and 50B are arranged so as to face the pair of side surfaces 22A and 22B of the slide groove 22. A slight gap is formed between the main surface 50E of the top 50 and the bottom surface 22C of the slide groove 22. As shown in FIG. 1(C), the top 50 is provided with a hole 52. One end 54A side of the connecting pin 54 is fitted and fixed in the hole 52, and the other end 54B side is fixed. Is fixed to the turret 30 by an appropriate method.

In the present invention, the top 50 that slides along the slide groove 22 has a rectangular parallelepiped shape instead of the axially extended key as in the background art. Therefore, the play (gap) between the side surfaces 50A and 50B of the top 50 and the side surfaces 22A and 22B of the slide groove 22 can be formed as small as possible. That is, the tolerance can be reduced to approach zero. Therefore, the rotation of the turret 30 can be transmitted to the output shaft 16 in a state where the slide groove 22 and the side surfaces of the top 50 are surely brought into surface contact with each other and have high rigidity and high wear resistance. The same applies to the side surfaces of the other slide groove 24 and the top 50.

A shift ring 18 having a groove 20 having a substantially U-shaped cross section formed in the central portion of the output shaft 16 is fixed by a nut or the like (not shown). At least a part of a cam follower 76 of a shift lever 74, which will be described later, engages with the groove 20, and when the shift lever 74 swings, the output shaft 16 along with the shift ring 18 moves in the axial direction (arrow in FIG. 1A). Direction).

Next, the worm wheel 60, the roller gear cam 38, and the drive mechanism thereof will be described. The worm wheel 60 and the roller gear cam 38 are fixed to a cam shaft 56 supported in the body case 12 in a direction substantially orthogonal to the output shaft 16. The worm wheel 60 and the roller gear cam 38 are connected to each other via a connecting plate, a nut or the like (not shown) so as to rotate integrally. The roller gear cam 38 is provided with a groove (not shown) on the outer periphery that engages with the ball 34 sucked and held by the turret 30. The shape of the groove is known. The outer circumference of the worm wheel 60 is formed with teeth that fit into and mesh with the spiral groove of the worm gear 68 fixed to the input shaft 66. Both ends 66A, 66B of the input shaft 66 are rotatably supported at appropriate positions on the body case 12 by a pair of holders 67A, 67B having bearings. The one end 66B side of the input shaft 66 is connected to a rotating shaft (not shown) of the motor via a gear box or the like (not shown).

Further, on the main surface of the worm wheel 60, a cam groove 62 that engages with a ball 64 provided at an appropriate position of the cam lever 70 is formed. As shown in FIG. 2, the cam groove 62 has a shape in which the distance from the rotation center (cam shaft 56) changes. Here, as shown in FIG. 2, the cam lever 70 is fixed to the main body cover 12 so that one end side swings about the pin 80 as a rotation center. One end of a link 72 is rotatably connected to the other end of the cam lever 70 via a pin 82. The link 72 connects the cam lever 70 and the shift lever 74. The shift lever 74 is fixed to the main body cover 12 so that one end thereof swings around the pin 86 as a rotation center, and the shift ring 18 of the output shaft 16 is provided on the other end side main surface. At least part of the groove 20 is provided with a cam follower 76 which can be housed or engaged. Further, the other end of the link 72 is rotatably connected to an appropriate position of the shift lever 74 via a pin 84.

Next, the operation of this embodiment will be described. When the input shaft 66 is rotated by a motor (not shown), the worm gear 60 fixed to the input shaft 66 meshes with the worm wheel 60 to rotate the worm wheel 60. At the same time, the roller gear cam 38 connected to the worm wheel 60 rotates. When the roller gear cam 38 rotates, the rotational force is transmitted to the turret 30 via the balls 34 guided along the groove on the outer periphery, and further transmitted to the output shaft 16 via the top 50 and the connecting pin. The turret 30 and the output shaft 16 integrally rotate at a non-constant speed. The non-constant speed rotation mechanism is known.

On the other hand, simultaneously with the rotation of the roller gear cam 38, the worm wheel 60 is also rotating, and the cam groove 62 of the worm wheel 60 and the ball 64 held by the cam lever 70 are engaged with each other. With the rotation, the cam lever 70 swings around the pin 80 as the center of rotation. Then, the shift lever 74 connected to the cam lever 70 via the link 72 also swings around the pin 86 as a rotation center, and is fixed to the cam follower 76 provided at the end of the shift lever 74 and the output shaft 16. The engagement of the shift ring 18 with the groove 20 causes the output shaft 16 to reciprocate linearly in the axial direction.

As described above, by rotating the input shaft 66 with a motor (not shown), the turret 30 and the output shaft 16 rotate together, and the output shaft 16 moves in the axial direction with respect to the turret 30. .. At this time, in the present embodiment, the side surfaces of the slide grooves 22 and 24 formed in the output shaft 16 in the axial direction and the side surface of the rectangular parallelepiped top 50 are in surface contact with each other with almost no clearance, so that the rotation of the input shaft 66 is ensured. Can be transmitted to the output shaft 16.

As described above, according to the first embodiment, the slide grooves 22 and 24 having a substantially rectangular cross section are formed on the outer periphery of the output shaft 16 along the axial direction of the output shaft 16, and the slide grooves 22 and 24 are formed in the slide grooves 22 and 24. A slidable substantially rectangular parallelepiped piece 50 is stored. One end of a connecting pin 54 is fixed to the top 50, and the other end of the connecting pin 54 is fixed to a turret 30 arranged on the outer circumference of the output shaft 16. When the turret 30 rotates, the side surface of the top 50 comes into surface contact with the side surfaces of the slide grooves 22 and 24, and the turret 30 rotates via the top 50. As described above, since the rotation is transmitted through the substantially rectangular parallelepiped top 50, the gap between the side surfaces of the slide grooves 22 and 24 is made as small as possible to eliminate backlash, and the rigidity and wear resistance are high. In this state, there is an effect that the rotation can be surely transmitted by the surface contact.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3(A) is a cross-sectional view showing the main part of this embodiment, FIG. 3(B) is a plan view of the (A) seen from the direction of arrow F3, and FIG. 3(C-1) is the above (A). A sectional view taken along the line #B-#B and seen in the direction of the arrow, and FIG. 3C-2 is a partially enlarged view of the above-mentioned (C-1). FIG. 4(A) is a view showing an automatic tool changing device using the rotation transmitting mechanism of this embodiment, and FIG. 4(B) is a view showing an automatic tool changing device using a conventional rotation transmitting mechanism. The same reference numerals are used for the same or corresponding components as in the first embodiment described above. In the first embodiment, the slide groove is formed on the shaft (output shaft 16) side of the shaft and the rotary body that slide relatively in the axial direction, but in the present embodiment, the slide groove is formed on the rotary body side. Is. The rotation transmission mechanism of this embodiment is also used in an automatic tool changer or the like, as in the first embodiment.

As shown in FIG. 3, in the rotation transmission mechanism 100 of the present embodiment, the turret 110 arranged on the outer periphery of the output shaft 102 can slide relative to the output shaft 102 in the axial direction of the output shaft 102. And for rotating integrally with the input shaft 102. The rotation transmission mechanism 100 includes a turret 110 provided on an outer peripheral surface of the output shaft 102, slide grooves 112 and 114 formed on the turret 110 along an axial direction of the output shaft 102, and the slide grooves 112 and 112. It is configured by a top 130 which is housed in 114 and slides, and a connecting pin 132 which connects the top 130 and the output shaft 102.

In the illustrated example, two slide grooves 112 and 114 are formed at positions facing each other along the axial direction of the output shaft 102. A cross section of the slide groove 112 taken along a plane orthogonal to the axial direction of the output shaft 102 has a pair of opposing side surfaces 112A and 112B as shown in FIGS. 3(C-1) and (C-2). It has a substantially rectangular shape. Further, the top 130 is a substantially rectangular parallelepiped that is movable in the axial direction along the slide groove 112. Then, as shown in FIG. 3C-2, the side surfaces 130A and 130B of the top 130 are arranged so as to face the pair of side surfaces 112A and 112B of the slide groove 112. Through holes are formed in the top 130 as shown in FIG. The connecting pin 132 penetrates the through hole, and one end portion 132A side thereof is fixed to the output shaft 102.

In the present embodiment, the other end 132B of the connecting pin 132 is fixed to the shift ring 120 provided on the outer circumference of the turret 110. The shift ring 120 is slidable with respect to the turret 110, and by fitting a cam follower or the like as in the first embodiment into the groove 122, the output of a driving means (not shown) is transmitted to the shift ring 120 and the top 130. The output shaft 132 can be slid in the axial direction via the connecting pin 132. The mechanism for rotating the turret 110 is omitted.

Also in this embodiment, similarly to the first embodiment, the top 130 that slides along the slide groove 112 has a rectangular parallelepiped shape instead of the key extended in the axial direction as in the background art. Therefore, the play (gap) between the side surfaces 130A and 130B of the top 130 and the side surfaces 112A and 112B of the slide groove 112 can be formed as small as possible. That is, the tolerance can be reduced to approach zero. Therefore, the rotation of the turret 110 can be transmitted to the output shaft 102 in a state where the slide groove 112 and the side surfaces of the top 130 surely come into surface contact with each other and have high rigidity and high wear resistance. The same applies to the side surfaces of the other slide groove 114 and the top 130. Thus, even if the slide groove is provided on the outer side of the shaft on the side of the rotating body, the same effect as that of the above-described first embodiment can be obtained.

<Specific Example>... FIG. 4A shows an automatic tool changer 200 using the rotation transmission mechanism 100 of the present embodiment. For comparison, FIG. 4B shows an automatic tool changer 250 using a conventional rotation transmission mechanism. In the automatic tool changer 90 of the first embodiment described above, rotation and advance/retreat (slide) of the output shaft are performed by one motor, but the automatic tool changer 200 of the present embodiment uses two motors. It has a structure. As shown in FIG. 4A, in the automatic tool changer 200, the output shaft 102 and the turret 110 are rotatably and slidably supported in a main body case 202.

A tool changing arm 204 is attached to the output shaft 102. A rotation motor 206 is provided in the main body case 202 by a holder 207. A gear 210 provided at the tip of an output shaft 208 of the rotation motor 206 meshes with a gear 116 provided at an appropriate position on the outer circumference of the turret 110, and the output of the rotation motor 206 is transmitted to the turret 110. To be done. Further, in the present embodiment, the main body case 202 is provided with the slide motor 220 by the holder 222 on the side opposite to the rotation motor 206 with the output shaft 102 interposed therebetween. A transmission shaft 230 is rotatably supported with respect to the main body case 202 between the sliding motor 220 and the output shaft 102 by a bearing (not shown) or the like. A gear 236 is provided at an appropriate position on the outer circumference of the transmission shaft 230. The gear 226 provided at the tip of the output shaft 224 of the sliding motor 220 meshes with the gear 236, whereby the output of the sliding motor 220 is transmitted to the transmission shaft 230.

The transmission shaft 230 is provided with an arm 238 that rotates integrally with the transmission shaft 230. A rotatable cam follower 240 that engages with the groove 122 of the shift ring 120 is provided at the tip of the arm 238. Has been. Therefore, by switching the rotation direction of the output shaft 224 of the sliding motor 220, the transmission shaft 230 and the arm 238 which rotate integrally with the output shaft 224 move in a swinging manner, and the cam follower 240 provided at the tip thereof is moved. The shift ring 120 slides in the axial direction of the output shaft 102. In the present embodiment, the shift ring 120 rotates integrally with the turret 110 together with the output shaft 102 by the top 130 and the connecting pin 132, but is movable in the axial direction with respect to the turret 110. ing.

On the other hand, the automatic tool changer 250 of the comparative example shown in FIG. 4B is the same in that the main body case 202 is provided with the rotation motor 206, the slide motor 220, the transmission shaft 230, and the arm 238. The rotation transmission mechanism 260 is provided with an output shaft 264 that is rotatable and slidable with respect to the shaft 262, and further has a rotating body 266 on the outer periphery of the output shaft 264. The rotating body 266 is rotatably supported by the main body case 202, and includes a gear 268 that meshes with a gear 210 at the tip of the output shaft 208 of the rotating motor 206. The rotation of the rotating body 266 is transmitted to the output shaft 264 by fitting a groove 270 formed on the output shaft 264 and a key 272 provided on the rotating body 266. The rotation of the sliding motor 220 is transmitted to the output shaft 264 via a shift ring (not shown) provided on the outer circumference of the output shaft 264. The slide of the shaft 262 and the output shaft 264 is guided by a spline structure or the like as in the above-mentioned prior art (not shown).

At that time, since the tool exchanging arm 204 is provided outside the rotating body 266, a cylindrical member 274 surrounding the output shaft 264 is required as shown in FIG. The shaft diameter of the movable part becomes thicker than that. As described above, according to this embodiment, since the top for rotating the shaft and the rotating body integrally is housed in the groove provided on the side of the rotating body and the top is fixed to the shaft, the diameter of the movable portion is reduced. Can be reduced to reduce the size of the entire apparatus. Although the rotation and the slide are performed by using the separate motors here, it does not prevent the rotation and the slide by the single motor as in the first embodiment. Other basic actions and effects are the same as those of the automatic tool changer shown in the above-described first embodiment.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the following are also included.
(1) The shapes and dimensions shown in the above embodiment are examples, and may be appropriately changed as necessary. Regarding the material, various known materials may be used as long as they have the same effect.
(2) In the above-described embodiment, two slide grooves and two tops are provided, but this is also an example, and the number may be increased or decreased as appropriate within a range in which the same effect is achieved.
(3) The rotating mechanism and the sliding mechanism of the output shafts 16 and 102 shown in the above embodiments are examples, and various known mechanisms can be applied as long as they have the same effect.
(4) In the first embodiment, the connecting pin 54 is fixed by fitting it into the hole 52 provided in the top 50, but this is also an example, and it is fixed by various other known methods. It does not prevent you from doing so.
(5) In the above embodiment, the rotation transmission mechanism of the present invention is described as an example applied to an automatic tool changer.However, the rotation transmission mechanism of the present invention is relatively rotatable while the shaft and the rotating body rotate integrally. It is applicable to all slidable rotation transmission mechanisms.

According to the present invention, the rotating body arranged on the outer periphery of the shaft is slidable relative to the shaft in the axial direction of the shaft, and rotates integrally with the shaft, and A slide groove formed along the axial direction on either the outer circumference or the rotating body and having a cross section orthogonal to the axial direction and having a pair of side surfaces facing each other; and a slide groove housed in the slide groove. A rectangular parallelepiped piece movable along the slide groove in the axial direction and having a pair of side surfaces in contact only with a pair of opposite side surfaces of the slide groove, and one end side fixed to the piece, The other end includes a connecting pin fixed to the other of the shaft and the rotating body. Therefore, the tolerance between the side surface of the top and the side surface of the slide groove is made small, and the rotational force is reliably transmitted by surface contact in a state of high rigidity and wear resistance, so that it can be applied to the application of the rotation transmission mechanism. .. In particular, it is suitable as a rotation transmission mechanism for an automatic tool changer or the like that requires a shaft and a rotating body to slide relative to each other.

10: rotation transmission mechanism 12: body case 14: holder 16: output shaft (shaft)
16A, 16B: end part 18: shift ring 20: groove 22, 24: slide groove 22A, 22B, 24A, 24B: side surface 22C, 24C: bottom surface 30: turret (rotating body)
32: holder 34: ball 36: magnet 38: roller gear cam 50: frame 50A to 50D: side surface 50E: main surface 52: hole 54: connecting pin 54A, 54B: end portion 56: cam shaft 60: worm wheel 62: cam groove 64 : Ball 66: Input shaft 66A, 66B: End 67A, 67B: Holder 68: Worm gear 70: Cam lever 72: Link 74: Shift lever 76: Cam follower 80-86: Pin 90: Automatic tool changer 100: Rotation transmission mechanism 102 : Output shaft (axis)
102A, 102B: End 104: Hole 110: Turret (rotating body)
112, 114: slide grooves 112A, 112B, 114A, 114B: side surface 116: gear 120: shift ring 122: groove 130: tops 130A, 130B: side surface 132: connecting pins 132A, 132B: end 200: automatic tool changer 202 : Main body case 204: Tool exchange arm 206: Rotation motor 207: Holder 208: Output shaft 210: Gear 220: Slide motor 222: Holder 224: Output shaft 226: Gear 230: Transmission shaft 236: Gear 238: Arm 240 : Cam follower 250: Automatic tool changer 260: Rotation transmission mechanism 262: Shaft 264: Output shaft 266: Rotating body 268: Gear 270: Groove 272: Key 274: Cylindrical member 300: Spline 310: Shaft 312: Key 320: Rotation Body 322: Keyway

Claims (5)

A rotating body arranged on the outer periphery of the shaft is a rotation transmitting mechanism that is slidable relative to the shaft in the axial direction of the shaft and rotates integrally with the shaft,
Either one of the outer circumference of the shaft or the rotating body is formed along the axial direction, the cross section orthogonal to the axial direction, a slide groove having a shape having a pair of opposed side surfaces,
A rectangular parallelepiped piece that is housed in the slide groove, is movable along the slide groove in the axial direction, and has a pair of side surfaces that contact only a pair of opposite side surfaces of the slide groove;
A connecting pin having one end fixed to the top and the other end fixed to the other of the shaft or the rotating body;
A rotation transmission mechanism comprising: The slide groove is formed on the outer periphery of the shaft,
The rotation transmitting mechanism according to claim 1, wherein one end side of the connecting pin is fixed to the top and the other end side is fixed to the rotating body side. The slide groove is formed in the rotating body,
The rotation transmission mechanism according to claim 1, wherein one end side of the connecting pin is fixed to the top and the other end side is fixed to the shaft side. The rotation transmission mechanism according to any one of claims 1 to 3, wherein the connection pin is fixed by being fitted into a recess or a through hole provided in the top. The rotation transmission mechanism according to any one of claims 1 to 4, wherein a plurality of the slide grooves are provided, and the top is housed in each slide groove.

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