JP5781204B1 - Chain oil supply device and method of manufacturing chain oil supply device - Google Patents

Abstract

An object of the present invention is to reduce the manufacturing cost by enabling easy processing of oil supply holes provided radially on a rotating body meshing with a chain. Shim 17a (17ai, 17ao), 17b (17bi, 17bo) and support plates 19a, 19b are provided on both sides of a sprocket 11 meshing with a chain 1 via intermediate plates 15a, 15b. Oil grooves 17r are formed by photoetching on the opposing surfaces of the shims 17ai and 17ao and the opposing surfaces of the shims 17bi and 17bo. The oil passages 35a and 35b by the oil groove 17r are at positions corresponding to the tooth bottom u between the tooth portion 11t and the tooth portion 11t of the sprocket 11. The oil supplied to the oil supply hole 13p of the support shaft 13 and the communication holes 13a and 13b is dropped onto the connecting portion 1d of the chain 1 through the oil passages 35a and 35b aligned with the communication holes 13a and 13b. [Selection] Figure 1

Description

  The present invention relates to a chain oil supply device that supplies lubricating oil to a driving chain and a method for manufacturing the chain oil supply device.

  There is known a technique in which an oil supply hole is provided in a sprocket that meshes with a chain being driven, and lubricating oil is supplied to the connecting portion of the chain through the oil supply hole (see Patent Document 1 below). In this technique, a disc-shaped ring body is fixed to the side surface of the sprocket, and oil holes are formed radially in the ring body by the same number as the number of teeth of the sprocket.

JP 2004-161386 A

  By the way, the above-described conventional technique provides a plurality of through holes serving as radial oil supply holes from the center side toward the outer peripheral side inside the disc-shaped ring body. In this case, since the through-hole extending from the center side toward the outer peripheral side is formed with a small diameter and a long length, for example, it is conceivable to process with a drill, but it is particularly difficult to process a plurality of holes, It becomes a factor of manufacturing cost rise.

  Therefore, an object of the present invention is to reduce the manufacturing cost by making it possible to easily process the oil supply holes provided radially in the rotating body meshing with the chain.

In the present invention, a rotating body that rotates with movement of a chain while a sprocket meshes with the chain is provided with an oil supply hole extending in a radial direction, and the lubricating oil is supplied to a connecting portion of the chain through the oil supply hole of the rotating body. The supporting shaft on which the rotating body is supported is a lubricating oil supply hole provided along the axial direction to which lubricating oil is supplied from the outside, one end communicating with the lubricating oil supply hole, and the other end being And a communication hole provided along the radial direction that opens in the lower outer peripheral surface of the support shaft, and the rotating body is divided into at least two along the axial direction, and the two divided parts are separated from each other. At least one of the opposing surfaces is provided with a groove constituting an oil supply hole. Aligned with the communication holes provided along the And, the chain is by pitch chain, said groove, said a position corresponding to the even number of teeth bottoms of the sprocket is provided equal to the number of the tooth bottom, said plurality of grooves are alternately Further, the present invention is characterized in that a recess is provided to which a sealing material for preventing lubricating oil from flowing into the oil supply hole is attached .

  According to the present invention, since the groove constituting the oil supply hole has only to be processed in at least one of the opposing surfaces of the two divided bodies constituting the rotating body, compared to the case of processing the radially penetrating hole. Therefore, processing is easy and the manufacturing cost can be reduced.

FIG. 1 is a side view of a chain oiling apparatus according to a first embodiment of the present invention. FIG. 2 is a front view of a rotating body including a sprocket provided with the chain oil supply device of FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 including a lubricating oil supply facility. 4 is an exploded cross-sectional view of the rotating body of FIG. FIG. 5 is a cross-sectional view taken along the line BB of FIG. FIG. 6A is a view taken in the direction of arrow C in FIG. 5 showing the shape of the oil groove, and FIG. 6B is a shape diagram of the oil groove corresponding to FIG. 6A showing a modification of the oil groove. FIG. 7A is an operation explanatory view showing a state in which the oil passage of the rotating body is aligned with the communication hole of the support shaft and lubricating oil is supplied to the connecting portion of the chain, and FIG. It is effect | action explanatory drawing which shows the state which the oil path of the rotary body shifted | deviated with respect to the communicating hole. FIG. 8 is a cross-sectional view corresponding to FIG. 3 of the chain fueling apparatus according to the second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In the chain oil supply apparatus according to the first embodiment of the present invention shown in FIG. 1, a chain 1 is stretched between a drive-side sprocket 3 and a driven sprocket (not shown), and meshes with these sprockets. Yes. The drive-side sprocket 3 is connected and fixed to a drive shaft 7 that is connected to a drive means such as a motor (not shown) to be rotated. On the other hand, the driven sprocket is rotatably supported on a driven shaft (not shown).

  A sprocket 11 for refueling that rotates with the movement of the chain 1 while meshing with the chain 1 is arranged on the upper part of the chain 1. The oil supply sprocket 11 has a smaller diameter and a smaller number of teeth than the sprockets 3 and 5, and is rotatably supported by the support shaft 13. The support shaft 13 is attached to a support member such as a frame (not shown).

  As shown in FIG. 2, left and right intermediate plates 15 (15a, 15b) are attached to both sides in the axial direction of the sprocket 11 for refueling. Left and right shims 17 (17a, 17b) as auxiliary plates are attached to the left and right sides of the intermediate plate 15 (15a, 15b), and support plates 19 (19a, 19b) are attached to the left and right sides of the shim 17 (17a, 17b). 19b) is attached. The intermediate plate 15, the shim 17 and the support plate 19 are all disk-shaped and have the same outer shape.

  The shims 17a and 17b include inner shims 17ai and 17bi located on the intermediate plate 15 side, and outer shims 17ao and 17bo located on the support plate 19 side. The inner shim 17ai and the outer shim 17ao of the shim 17a are butted against each other, and the inner shim 17bi and the outer shim 17bo of the shim 17b are butted against each other. The inner shim 17ai and the outer shim 17ao form two divided bodies, and the inner shim 17bi and the outer shim 17bo form two divided bodies. The inner shims 17ai and 17bi and the outer shims 17ao and 17bo have the same plate thickness and are thinner than the intermediate plate 15 and the support plate 19.

  The intermediate plate 15, the shim 17, and the support plate 19 are fastened and fixed together with the sprocket 11 by a plurality of bolts 21 and nuts 23 on the outer peripheral side of the support shaft 13 in a state where the support shaft 13 is inserted into the through hole in the central portion. Have been integrated. As shown in FIG. 4, the through hole into which the support shaft 13 is inserted is constituted by the through holes 11 h, 15 h, 17 h and 19 h of the sprocket 11, the intermediate plate 15, the shim 17 and the support plate 19. Bolt insertion holes 11bh, 15bh, 17bh, 19bh into which the bolts 21 are inserted are also formed in the sprocket 11, the intermediate plate 15, the shim 17 and the support plate 19.

  As shown in FIG. 3, the rotating body 25 including the integrated sprocket 11, intermediate plate 15, shim 17 and support plate 19 is separated from the support shaft 13 by a flange 13 f formed at one end of the support shaft 13. A retaining is made. An end portion of the support shaft 13 opposite to the flange 13f protrudes from the rotating body 25, and a retaining nut 27 is fastened to a screw portion 13s formed at the protruding end portion. At this time, for example, toward the rotating body 25 side of the retaining nut 27 so as not to tighten the rotating body 25 between the retaining nut 27 and the flange 13f so that the rotating body 25 can rotate with respect to the support shaft 13. The support shaft 13 is provided with a stopper that restricts the movement of the support shaft 13. An O-ring 29 serving as a sealing material is interposed between the support plate 19 and the support shaft 13.

  In this embodiment, since it is assumed that the chain 1 moves at a low speed, no bearing is provided between the support shaft 13 and the rotating body 25. A bearing may be provided between the shaft 13 and the support plate 19. As an example in which the chain 1 moves at a low speed, there is a facility for producing bread, which is food. In the bread production facility, the bread bread material on the tray placed on the chain 1 passes through the oven. At that time, the inside of the oven formed in a tunnel shape becomes a high temperature exceeding 250 ° C. For this reason, the chain 1 is overused, and lubrication during operation is important.

  As shown in FIG. 3, an oil supply hole 13 p to which oil serving as lubricating oil is supplied is formed in the center of the support shaft 13 along the axial direction. The oil supply hole 13p is closed at the left end in FIG. 3, the right end opens to the outside, and the oil supply pipe 31 is connected to the opening. An oil pump 33 is connected to the oil supply pipe 31. An air pipe 37 to which air is supplied from an air pump 35 is connected to the oil supply pipe 31, and air is mixed into the high-viscosity oil by a mixer 39 disposed at this connection portion, so that the high-viscosity oil is supplied. Easy to flow. Furthermore, by mixing air into the oil, it becomes easy to instantaneously supply high-viscosity oil to a connecting portion 1d of the chain 1 which will be described later.

  As shown in FIG. 3, communication holes 13 a and 13 b are formed in the lower part of the oil supply hole 13 p so that one end communicates with the oil supply hole 13 p and the other end opens on the lower outer peripheral surface of the support shaft 13. Yes. The communication holes 13 a and 13 b are respectively provided at positions corresponding to the shims 17 a and 17 b in the axial direction of the support shaft 13. A recess 13m serving as a mark is stamped on the surface of the flange 13f with a punch so that the circumferential position where the communication holes 13a and 13b of the support shaft 13 are formed can be seen from the outside.

  As shown in FIG. 5, which is a BB cross-sectional view of FIG. 2, oil grooves 17r extending radially from the central through hole 17h are formed on the surface of the shim 17a facing the outer shim 17ao of the inner shim 17ai. Yes. The oil groove 17r has an inner end portion 17ri that opens to the through hole 17h of the inner shim 17ai, and an outer end portion 17ro that opens to the outer peripheral surface of the inner shim 17ai. The outer end 17ro of the oil groove 17r is at a position corresponding to the tooth bottom 11u between the tooth portion 11t and the tooth portion 11t of the sprocket 11. The same number of oil grooves 17r as the number of tooth bottoms 11u are provided at equal intervals in the circumferential direction.

  The oil groove 17r includes a main portion 17r1 from the inner end portion 17ri to the vicinity of the outer end portion 17ro, and a nozzle portion 17r2 near the outer end portion 17ro that is tapered with respect to the main portion 17r1. As shown in FIG. 6 (a), which is a view taken in the direction of arrow C in FIG. 5, the main portion 17r1 and the nozzle portion 17r2 of the oil groove 17r are formed of concave portions having a concave curved surface shape such as an arc shape. A square shape may be used as shown in (b).

  In the shim 17a, the surface of the outer shim 17ao facing the inner shim 17ai is also formed with an oil groove 17r similar to the oil groove 17r described above. By arranging these oil grooves 17r to face each other, FIG. An oil passage 35a serving as an oil supply hole having a substantially circular or rectangular cross section is formed.

  Further, in FIG. 4, an oil groove 17r similar to the shim 17a is also formed on the mutually facing surfaces of the inner shim 17bi and the outer shim 17bo of the right shim 17b of the sprocket 11. Therefore, also in the shim 17b, an oil passage 35b (FIG. 3) serving as an oil supply hole is formed by the oil grooves 17r formed on the opposing surfaces of the inner shim 17bi and the outer shim 17bo.

  When the oil passages 35a and 35b are circular, for example, the diameter of the portion corresponding to the main portion 17r1 is about 3 to 5 mm, and the diameter of the portion corresponding to the tip opening of the nozzle portion 17r2 corresponds to the main portion 17r1. It is about one third of the diameter of the part. The shims 17a and 17b are made of, for example, stainless steel, and the oil groove 17r can be formed with higher accuracy by etching such as photoetching. The material of the shims 17a and 17b is not limited to stainless steel as long as it can be etched.

  The plurality of oil passages 35a and 35b of the shims 17a and 17b are provided along the circumferential direction corresponding to the oil groove 17r shown in FIG. 5, and one of them is located at the lowermost part. When in a state of being oriented in the vertical direction, the communicating holes 13a and 13b of the support shaft 13 are aligned and communicated.

  Therefore, at this time, the oil discharged from the oil pump 33 shown in FIG. 3 flows into the oil supply hole 13p of the support shaft 13 through the oil supply pipe 31 together with the mixed air, and further passes through the communication holes 13a and 13b. Flow into the oil passages 35a and 35b. 7A shows a state in which the oil passage 35a (35b) is aligned and communicated with the communication hole 13a (13b), and FIG. 7B shows an oil passage 35a (35b) connected to the communication hole 13a (13b). Indicates a state in which they do not match and are not in communication.

  Here, the rotating body 25 including the sprocket 11 rotates with the movement of the chain 1 while the sprocket 11 is engaged with the chain 1 as shown in FIG. For this reason, any one of a plurality of oil passages 35a provided along the circumferential direction in the shim 17a is sequentially aligned with the communication hole 13a of the support shaft 13 with rotation, and the oil is intermittently dropped downward. Similarly, any of the plurality of oil passages 35b provided in the circumferential direction in the shim 17b is sequentially aligned with the communication hole 13b of the support shaft 13 with rotation, and the oil is intermittently dropped downward. .

  The tip portions (lower end portions) corresponding to the nozzle portions 17r2 of the oil passages 35a and 35b are positioned so as to be circumferentially aligned with the tooth bottom 11u of the sprocket 11, and the chain 1 is shown in FIG. The roller 1a enters. At both ends in the axial direction of the roller 1a, there are provided connecting portions 1d for connecting adjacent plates 1b with pins 1c. As shown in FIGS. 1 and 3, the communication holes 13 a and 13 b of the support shaft 13 are positioned above the connecting portion 1 d in a state where the roller 1 a enters the tooth bottom 11 u.

  Therefore, the oil falling from the communication holes 13a and 13b of the support shaft 13 through the oil passages 35a and 35b of the shims 17a and 17b is supplied to the connecting portion 1d of the chain 1 and the connecting portion 1d is lubricated. In this case, in the process in which the chain 1 is moving, the plurality of connecting portions 1d can be automatically refueled sequentially using the sprocket 11 meshing with the chain 1. Thereby, malfunctions, such as abrasion in the connection part 1d of the chain 1, can be suppressed and chain life can be extended more reliably. In particular, under high temperatures such as those used in the bread bread manufacturing facility described above, refueling can be performed while the chain 1 is in operation, which is extremely effective.

  In this case, in this embodiment, the oil passage 35a provided in the shim 17a is formed by the oil groove 17r provided in the inner shim 17ai and the outer shim 17ao shown in FIG. Similarly, the oil passage 35b provided in the shim 17b is formed by an oil groove 17r provided in the inner shim 17bi and the outer shim 17bo. That is, the inner shim 17ai and the outer shim 17ao each having the oil groove 17r are abutted with each other to form an oil passage 35a. Similarly, the inner shim 17bi and the outer shim 17bo each having the oil groove 17r are abutted with each other. Thus, the oil passage 35b is obtained.

  For this reason, the formation of the oil passages 35a and 35b is compared with a conventional case where a radial through hole is machined in the disk-like member along its surface using, for example, a drill as an oil passage. Therefore, it is extremely easy and the manufacturing cost can be reduced. In particular, with a material that is difficult to process, such as stainless steel, it is extremely difficult to drill a hole having a diameter of 3 to 5 mm as a deep hole of 30 to 80 mm, for example. However, in this embodiment, an oil passage corresponding to a deep hole of 30 to 80 mm can be easily manufactured by forming a groove in the shim.

  Further, in the present embodiment, the rotating body 25 includes the sprocket 11 having a tooth portion 11t on the outer peripheral portion, and a shim 17 that is an auxiliary plate attached to the axial side surface of the sprocket 11, and the oil groove 17r is a shim. 17 is provided. Accordingly, the oil groove 17r can be easily formed by etching using a member different from the sprocket 11 as a thin plate.

  Note that the inner shim 17ai and the outer shim 17ao of the shim 17 and the inner shim 17bi and the outer shim 17bo have a plate thickness of about 0.5 mm to 2.0 mm. By using such a thin plate, the sprocket 11 is included. The rotating body 25 can be reduced in size and weight.

  When the oil groove 17r is formed by etching such as photoetching, the oil groove 17r is formed on a thin plate material constituting the inner shim 17ai and the like, and then the outer shape and the center through hole 17h and the bolt hole 17bh are formed. Press work. In particular, when the plate thickness is as thin as about 0.5 mm, the outer shape and the through holes 17h and the bolt holes 17bh can be formed by etching in the same manner as the oil grooves 17r.

  Further, by forming the oil groove 17r by photoetching, it is possible to provide the oil groove 17r with high accuracy with respect to the shim 17 formed as a thin plate.

  Moreover, the manufacturing method of the chain oil supply apparatus in this embodiment is the 1st process of forming the oil groove 17r in the mutually opposing surface of inner side shims 17ai and 17bi and outer side shims 17ao and 17bo which are two divided bodies. And a second step of making the oil groove 17r into the oil passages 35a and 35b by causing the two divided bodies provided with the oil groove 17r to abut each other.

  For this reason, after the oil groove 17r is formed, the oil passages 35a and 35b can be easily provided by a simple manufacturing method in which the inner shims 17ai and 17bi and the outer shims 17bo and 17bo are simply brought into contact with each other.

  FIG. 8 shows a second embodiment of the present invention. In the second embodiment, a plurality of chains 1 are provided in parallel so that the connecting portion 1d of each chain 1 can be refueled. In this case, by providing a plurality of chains 1, for example, heavy objects or large articles can be conveyed. The plurality of chains 1 are connected to each other and move in synchronization.

  In the second embodiment, the support shaft 130 is formed longer than the support shaft 13 of the first embodiment, and shims 17c, 17d,..., 17m are added so as to correspond to the plurality of chains 1. . A spacer 41 corresponding to the support plate 19 (19a, 19b) is appropriately interposed between the shims 17c, 17d,..., 17m, and is supported on the flange 130f side formed at the end of the support shaft 130. A plate 19m is arranged.

  The shims 17c, 17d,..., 17m are composed of a pair of shims facing each other corresponding to the inner shims 17ai and 17bi and the outer shims 17ao and 17bo, similarly to the shims 17a and 17b. A plurality of radial oil grooves 17r similar to the shims 17a and 17b are formed along the circumferential direction on the mutually opposing surfaces of each pair of shims.

  Then, a bolt 210 is passed through a laminated body composed of the sprocket 11 and shims 17c, 17d,..., 17m, and the nut 23 is fastened to form a rotating body 250. The rotating body 250 is rotatable with respect to the support shaft 130, and an oil supply hole 130p to which oil serving as lubricating oil is supplied is formed at the center. Oil is supplied to the oil supply hole 130p by being connected to the oil supply pipe 31 as in the first embodiment.

  Further, communication holes 13c, 13d,..., 13m similar to the communication holes 13a, 13b corresponding to the added shims 17c, 17d,. Provided. The lower ends of the communication holes 13c, 13d,..., 13m can communicate with oil passages 35c, 35d,.

  The oil outlets at the tips of the oil passages 35c, 35d,..., 35m are in positions corresponding to the connecting portions 1d of the respective chains 1 in the axial direction (left-right direction in FIG. 8), like the oil passages 35a, 35b. is there. The oil discharge port is located at a position aligned in the circumferential direction with respect to the tooth bottom 11u of the sprocket 11 as in the oil passages 35a and 35b.

  Therefore, in the present embodiment, as in the first embodiment, the oil that drops from the communication holes 13 a and 13 b through the oil passages 35 a and 35 b is supplied to the connecting portion 1 d of the chain 1. At the same time, oil falling from the other communication holes 13c, 13d,..., 13m through the oil passages 35c, 35d,. It is supplied to the connecting portions 1d of the other plurality of chains 1.

  As described above, in the present embodiment, even in a transport device in which a plurality of chains 1 are arranged in parallel, by adding shims 17 corresponding to the number of the chains 1, each connection portion 1d of the plurality of chains 1 can be connected. Can be refueled. As the number of the shims 17 increases, a simple manufacturing method of forming the oil groove 17r in providing the oil passage becomes extremely effective.

  In the second embodiment, one sprocket 11 is provided for a plurality of chains 1, but a plurality of sprockets 11 are provided, for example, the sprocket 11 is engaged with the chain 1 at the left end in FIG. Also good. At that time, the P.P. C. Cost reduction can be achieved by unifying D (pitch circle diameter) and unifying (standardizing) a plurality of intermediate plates 15, shims 17 and support plates 19 respectively.

  As mentioned above, although embodiment of this invention was described, these embodiment is only the illustration described in order to make an understanding of this invention easy, and this invention is not limited to the said embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiment, but includes various modifications, changes, alternative techniques, and the like that can be easily derived therefrom.

  For example, in the above-described embodiment, the oil groove 17r is formed in both the inner shim 17ai and the outer shim 17ao in the shim 17a, but the oil groove 17r is formed only in either the inner shim 17ai or the outer shim 17ao. It may be formed. The same applies to the inner shim 17bi and the outer shim 17bo in the shim 17b, and the same applies to the shims 17c, 17d,.

  Further, only one of the inner shim 17ai and the outer shim 17ao in the shim 17a may be used, and the other may not be used. In this case, the surface provided with either one of the inner shim 17ai provided with the oil groove 17r or the outer shim 17ao is abutted against the intermediate plate 15a or the support plate 19a, and is opposed to the oil groove 17r and the oil groove 17r. An oil passage is formed with the surface to be The same applies to the inner shim 17bi and the outer shim 17bo in the shim 17b, and the same applies to the shims 17c, 17d,.

  Further, an oil passage may be formed between the oil groove 17r formed in the outer shims 17ao and 17bo and the sprocket 11 by directly butting the outer shims 17ao and 17bo with the side surfaces of the sprocket 11. In this case, the chain 1 is lubricated mainly by supplying oil to the roller 1a.

  Further, only the sprocket 11 is used as the rotating body 25, the sprocket 11 is divided into two along the axial direction, and the divided body is divided into an oil passage and at least one of the opposing surfaces of the divided body. A groove may be formed. In this case, the chain 1 cannot be directly lubricated to the connecting portion 1d of the chain 1, but the chain 1 is lubricated by lubricating the roller 1a.

  In the above-described embodiment, the oil groove 17r is formed by etching, but may be formed by pressing. In this case, a certain amount of thickness is required as a member for forming the oil groove 17r. In the case of press working, it is particularly effective in terms of cost when the shim 17 is mass-produced.

  Further, in the above-described embodiment, oil is supplied to the oil supply holes 13p and 130P of the support shafts 13 and 130 from the end on one side in the axial direction in FIG. 3 and FIG. Oil may be supplied from both sides. By supplying oil from both sides in the axial direction, the oil can be supplied more uniformly to the plurality of connecting portions 1 d of the chain 1. In particular, as in the second embodiment shown in FIG. 8, when a plurality of chains 1 are provided in parallel and the support shaft 130 is long, the oil supply from only one end is near the other end. Since it is difficult for oil to reach the connecting portion 1d, the effect of supplying oil from both sides in the axial direction is great.

  In the case of a bi-pitch chain in which the pitch between rollers of the chain is doubled, the shim may be provided with an oil groove only at a position corresponding to the bottom of the sprocket into which the roller enters. That is, the shim is not provided with oil grooves at positions corresponding to all tooth bottoms in the sprocket as shown in FIG. 5, but is provided with oil grooves at positions corresponding to every other tooth bottom.

  Further, as shown in FIG. 5, in the shim 17, the shim 17 may be used for a bi-pitch chain as a configuration in which oil grooves are provided at positions corresponding to all the tooth bottoms of the sprocket. In this case, a recess that is wider than the oil groove is formed in the middle of the oil groove at a position where oil does not need to flow, and a sealing material is fitted into the recess, so that the oil can be inserted into the oil groove (oil path). Do not flow. As a result, a common shim can be used for the normal pitch chain and the bi-pitch chain, which can contribute to cost reduction.

DESCRIPTION OF SYMBOLS 1 Chain 1d Chain connection part 11 Sprocket 17ai, 17bi Inner shim (auxiliary plate, divided body)
17ao, 17bo outer shim (auxiliary plate, divided body)
17r Oil groove (groove)
25,250 Rotating body 35a, 35b, 35c, 35d, ... 35m Oil passage (oil supply hole)

Claims (5)

The rotating body that rotates with the movement of the chain while the sprocket meshes with the chain is provided with a radially extending oil supply hole extending therethrough,
A chain oil supply device for supplying lubricating oil to the connecting portion of the chain through an oil supply hole of the rotating body,
The support shaft on which the rotating body is supported has a lubricant supply hole provided along the axial direction by supplying lubricant from the outside, one end communicating with the lubricant supply hole, and the other end of the support shaft. A communication hole that opens in the lower outer peripheral surface and is provided along the radial direction,
The rotating body is divided into at least two along the axial direction,
At least one of the opposing surfaces of the two divided parts is provided with a groove constituting the oil supply hole,
It said grooves constituting the oil supply hole, by rotation of the rotating body in a state oriented in a vertical direction is located at the bottom, and communicating in alignment with the communication hole provided along the radial direction of the support shaft,
The chain is a bi-pitch chain;
The groove is provided at the position corresponding to the even number of tooth bottoms of the sprocket and is provided in the same number as the number of the tooth bottoms,
Each of the plurality of grooves is provided with a recess to which a sealing material for preventing lubricating oil from flowing into the oil supply hole is mounted every other groove . The rotating body includes said sprocket comprising teeth on the outer peripheral portion, an auxiliary plate attached to the axial side of the sprocket, and
The chain lubrication device according to claim 1, wherein the groove is provided in the auxiliary plate.   The chain lubrication device according to claim 1 or 2, wherein the groove is formed by etching. The rotating body that rotates with the movement of the chain while the sprocket meshes with the chain is provided with a radially extending oil supply hole extending therethrough,
A method of manufacturing a chain oil supply device for supplying lubricating oil to a connecting portion of the chain through an oil supply hole of the rotating body,
The support shaft on which the rotating body is supported has a lubricant supply hole provided along the axial direction by supplying lubricant from the outside, one end communicating with the lubricant supply hole, and the other end of the support shaft. A communication hole that opens in the lower outer peripheral surface and is provided along the radial direction,
The rotating body is divided into at least two along the axial direction,
A first step of forming a groove constituting the oil supply hole in at least one of the opposing surfaces of the two divided bodies;
A second step of making the groove the oil supply hole by abutting two divided bodies provided with the groove on at least one side, and
It said grooves constituting the oil supply hole, by rotation of the rotating body in a state oriented in a vertical direction is located at the bottom, and communicating in alignment with the communication hole provided along the radial direction of the support shaft,
The chain is a bi-pitch chain;
The groove is provided at the position corresponding to the even number of tooth bottoms of the sprocket and is provided in the same number as the number of the tooth bottoms,
As a pre-process of the second step, a step of forming a recess to which a sealing material for preventing lubricating oil from flowing into the oil supply hole is formed in every other groove is provided. A method of manufacturing a chain oiling device characterized by the above.   The method for manufacturing a chain oiling device according to claim 4, wherein the groove is formed by etching.

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