TWM523786U - Bearing assembly and spin apparatus - Google Patents

Description

Bearing device and shaft transfer equipment

The present invention relates to a bearing device and a shaft turning device, and more particularly to a bearing device that can be rotatably mounted by a rod body, and a shaft rotating device including the rod body and the bearing device.

In the known machining technique, the workpiece is machined by mounting the workpiece on a table mounted on a screw of a machine tool mounted on a bearing and driven by a motor. The screw rotates, and when the screw rotates, the table can be linearly moved with the workpiece and the workpiece can be processed through a suitable machine. However, due to the continuous rotation of the screw during the processing, the joint between the screw and the bearing is heated by the frictional friction for a long time, so that the temperature of the screw is increased, and the screw of the metal is heated to generate thermal expansion and thermal elongation, resulting in positioning. Accuracy errors, which in turn affect machining precision, can cause errors after machining. For workpieces that require high precision, the above problems of expansion and elongation due to heat are more urgent to solve.

Therefore, the object of the present invention is to provide a bearing device and a shaft turning device which can provide cooling and heat dissipation effects and improve machining precision.

Therefore, the novel bearing device is suitable for rotatably mounting a rod body, and comprises a base, a bearing unit, a first collar, a ring seat and a second collar. The base includes an inner circumferential surface defining a space, an outer circumferential surface opposite to the inner circumferential surface, and a first opening and a first opening and a second opening from the outer circumferential surface toward the inner circumferential surface and communicating with the seating space Two openings. The first opening and the second opening are for oil to pass through. The bearing unit is mounted in the seat space of the base and rotatably extends through the rod body. The bearing unit has a first end portion and a second end portion spaced apart from each other. The first collar is mounted on the seat space of the base and can be circumferentially wrapped around the rod body. The first collar is located on one side of the first end. The ring seat is non-rotatably mounted on the seat space and is located on a side of the second end of the bearing unit, the ring seat includes an inner seat surface, and a inner surface opposite to the inner seat surface and facing the base The outer seating surface of the circumferential surface has a gap between the outer seating surface and the inner circumferential surface that communicates with the seating space. The second set of rings can be circumferentially wrapped around the rod and located in the ring seat. One of the first opening and the second opening is for injecting oil, so that oil can flow through the seat, the gap, the rod and the bearing unit through the seat space of the base Flowing from the first opening and the other of the second opening.

The novel shaft-turning apparatus comprises two spaced bearing devices and a rod body rotatably mounted to the bearing devices. Each bearing device includes a base, a bearing unit, a first collar, a ring seat and a second collar. The base includes an inner circumferential surface defining a space, an outer circumferential surface opposite to the inner circumferential surface, and a first opening extending through the outer circumferential surface toward the inner circumferential surface and communicating with the seating space. The bearing unit is mounted in the seat space of the base and rotatably extends through the rod body. The bearing unit has a first end portion and a second end portion spaced apart from each other. The first collar is mounted on the seat space of the base and can be circumferentially wrapped around the rod body. The first collar is located on one side of the first end and includes a body that fits the rod body. a toroidal surface, an outer annular surface opposite to the inner annular surface, and at least one first flow hole extending from the outer annular surface toward the inner annular surface and communicating with the seating space.

The ring seat is non-rotatably mounted on the seat space and is located on a side of the second end of the bearing unit, the ring seat includes an inner seat surface, and a inner surface opposite to the inner seat surface and facing the base The outer seating surface of the circumferential surface has a gap between the outer seating surface and the inner circumferential surface that communicates with the seating space. The second set of rings can be synchronously rotatably wrapped around the rod body and located in the ring seat. The second set ring includes an inner annular surface that fits the rod body and an outer annular surface opposite to the inner annular surface. And at least one first flow hole extending from the outer ring surface toward the inner ring surface and communicating with the seat space.

The rod body includes an inner rod surface defining an axially extending rod flow passage, an outer rod surface opposite to the inner rod surface, and a plurality of spaced apart from each other and extending from the outer rod surface toward the inner rod surface A rod flow hole communicating with the rod flow passage, each rod flow hole communicating with the first flow hole of the respective first collar and the first flow hole of the second collar. The first opening of the base of one of the bearing devices is adapted to inject oil, and the oil can flow through the rod flow path of the rod to the base of the other of the bearing devices The first opening flows outward.

The present invention also provides another type of shaft turning device that can be coupled to a motor and includes two spaced bearing devices, a rod that can be rotatably mounted on the bearing devices by the motor, and a bearing One of the devices is assembled and mounted to the motor mount. Each bearing device includes a base, a bearing unit, a first collar, a ring seat and a second collar. The base includes an inner peripheral surface defining a space, and an outer peripheral surface opposite to the inner peripheral surface. The bearing unit is mounted in the seat space of the base and rotatably extends through the rod body. The bearing unit has a first end portion and a second end portion spaced apart from each other. The first collar is mounted on the seat space of the base and can be circumferentially wrapped around the rod body. The first collar is located on one side of the first end and includes a body that fits the rod body. a toroidal surface, an outer annular surface opposite to the inner annular surface, and at least one first flow hole extending from the outer annular surface toward the inner annular surface and communicating with the seating space.

The ring seat is non-rotatably mounted on the seat space and is located on a side of the second end of the bearing unit, the ring seat includes an inner seat surface, and a inner surface opposite to the inner seat surface and facing the base The outer seating surface of the circumferential surface has a gap between the outer seating surface and the inner circumferential surface that communicates with the seating space. The second set of rings can be synchronously rotatably wrapped around the rod body and located in the ring seat. The second set ring includes an inner annular surface that fits the rod body and an outer annular surface opposite to the inner annular surface. And at least one first flow hole extending from the outer ring surface toward the inner ring surface and communicating with the seat space. The base of at least one of the bearing devices further includes a first opening extending through the outer peripheral surface toward the inner peripheral surface and communicating with the seating space.

The rod body includes an inner rod surface defining an axially extending rod flow passage, an outer rod surface opposite to the inner rod surface, and a plurality of spaced apart from each other and extending from the outer rod surface toward the inner rod surface A rod flow hole communicating with the rod flow passage, each rod flow hole communicating with the first flow hole of the respective first collar and the first flow hole of the second collar. The mount is coupled to the base of one of the bearing devices, the mount having a through hole communicating with the seat space of the base, and a liquid outlet communicating with the through hole.

The first opening of the base of one of the bearing devices is adapted to inject oil, and the oil can flow through the rod flow path of the rod to the base of the other of the bearing devices. And flowing into the through hole of the mount and flowing out from the liquid outlet.

The utility model has the advantages that: the first opening and the second opening of the base can be used to inject oil, and the oil is made through the first ring, the ring seat and the second ring; The utility model can flow around the rod body to achieve the effect of heat exchange and cooling of the rod body, thereby avoiding the problems of overheating, thermal expansion and thermal elongation of the rod body, so the novel can achieve good cooling and heat dissipation effects and improve processing precision. .

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 1, 2, and 3, a first embodiment of the present invention relates to a first and second spaced apart mounting brackets 1 and 2, respectively, to a bearing device 2 and a locking seat 4 respectively mounted on the mounting brackets 1. And a rod 5 rotatably mounted to the bearing means 2.

The mounts 1 are spaced apart from each other, each mount 1 having a horizontal bottom wall 11 and a shelf wall 12 extending upwardly from the bottom wall 11 for the corresponding bearing device 2 to be erected. The mounting seats 1 of the present embodiment have different appearances, and the structure of the mounting base 1 is not required to be limited, as long as the bearing devices 2 can be mounted. In addition, the mounting seat 1 on the left side is also mountable by a motor 10 for driving the rotation of the rod 5.

Referring to Figures 4-6, each bearing device 2 is adapted to be rotatably mounted for the shaft 5, and includes a base 21, a bearing unit 220, a first collar 23, a ring seat 24, and a second sleeve. The ring 25, the two positioning units 26, the plurality of oil seals 27, and a screw member 28.

The base 21 of each bearing device 2 is fixedly coupled to the corresponding mounting seat 1, and the base 21 is fixed and does not rotate. The base 21 includes an inner circumferential surface 211 defining an axially extending seating space 210, an outer circumferential surface 212 opposite to the inner circumferential surface 211 and having a undulating annular surface, and from the outer circumferential surface 212 toward the outer circumferential surface 212 The inner peripheral surface 211 extends through and communicates with a first opening 213 and a second opening 214 of the seating space 210. The first opening 213 and the second opening 214 are provided for an oil to enter and exit the rod 5. Depending on the mode of use, the first opening 213 and the second opening may be used as a liquid inlet for the oil supply to enter, and may also serve as a liquid outlet for the oil supply to flow outward. Therefore, the present invention does not need to define the first opening 213 and the second opening 214, which is the liquid inlet and the liquid outlet.

The bearing unit 220 is mounted on the seat space 210 of the base 21, and the rod body 5 is rotatably passed therethrough. The bearing unit 220 includes a plurality of adjacent bearings 22, and the number of the bearings 22 of the present embodiment is two, and may be at least one in practice. Each of the bearings 22 is a ball bearing and includes an inner ring seat 221 that is rotatably coupled around the rod body 5, an outer ring seat 222 that is fixedly and non-rotatably surrounding the inner ring seat 221, and a plurality of The ball 223 between the inner ring seat 221 and the outer ring seat 222. The bearing unit 220 formed by the plurality of bearings 22 has a first end portion 224 and a second end portion 225 spaced apart from each other. In the present embodiment, the first end 224 is located on the left side and the second end 225 is located on the right side.

Referring to FIGS. 5-8 , the first collar 23 is mounted on the seat space 210 of the base 21 and can be tightly wrapped around the rod 5 in a synchronous rotation manner, and the first collar 23 is located in the bearing unit 220. The first end portion 224 is on one side. The first collar 23 includes an inner annular surface 231 that fits the shaft 5, an outer annular surface 232 opposite to the inner annular surface 231, and a plurality of outer annular surfaces 232 extending toward the inner annular surface 231. The first flow hole 233 and a receiving groove 234 extending from the inner annular surface 231 toward the outer annular surface 232. The first flow hole 233 communicates with the first opening 213 via the seat space 210 of the base 21 . The direction in which the first flow hole 233 extends from the outer ring surface 232 toward the inner ring surface 231 is not parallel to the radial direction of the first collar 23, that is, the direction in which the first flow hole 233 extends and the first set The radial direction of the ring 23 is offset.

The ring seat 24 is mounted to the seat space 210 in a non-rotating manner and is located on the second end portion 225 side of the bearing unit 220. The ring seat 24 includes an opposite inner seating surface 241 and an outer seating surface 242, and an abutting surface connecting the inner seating surface 241 and the outer seating surface 242 and engaging the second end portion 225 of the bearing unit 220. 243, and a plurality of second flow holes 244 extending through the inner seating surface 241 and the outer seating surface 242. The outer seating surface 242 has a fitting surface portion 245 spaced apart from the abutting surface 243 and attached to the inner circumferential surface 211 of the base 21, and an extension from the peripheral edge of the abutting surface 243 toward the bonding surface portion 245 An inclined surface portion 246 which is obliquely extended and has a threaded surface portion 247 which is connected to the side of the inclined surface portion 245 opposite to the inclined surface portion 246 and which is screwed to the inner circumferential surface 211 of the base 21. The inclined surface portion 246 and the inner circumferential surface 211 of the base 21 form a space 240 that is annular and communicates with the space 210. Each of the second flow holes 244 penetrates from the inclined surface portion 246 toward the inner seating surface 241 , and communicates with the seat space 210 and the first opening 213 of the base 21 via the gap 240 .

The second collar 25 is tightly wrapped around the rod 5 in a synchronously rotatable manner and is mounted in the ring seat 24. The second collar 25 is spaced apart from the first collar 23 and is located on the side of the second end 225 of the bearing unit 220. The structure of the second collar 25 of this embodiment is the same as that of the first collar 23, except that the two are opposite to each other in the installation. The second collar 25 also includes an inner annular surface 231, an outer annular surface 232, a plurality of first flow holes 233, and a recess 234. The structure of the second collar 25 will not be separately described herein. The first flow holes 233 of the second collar 25 communicate with the first opening 213 of the base 21 via the second flow hole 244 of the ring seat 24.

The positioning units 26 of each bearing device 2 are respectively mounted on the first collar 23 and the equal pockets 234 of the second collar 25. Each positioning unit 26 includes an elastic member 261 located in the receiving groove 234, and a positioning bead 262 coupled to one end of the elastic member 261 adjacent to the inner annular surface 231.

The oil seals 27 are respectively wrapped around the first collar 23 and the second collar 25 to prevent oil from flowing out and leaking in an unintended direction, and mainly prevent oil from the space of the base 21 The left and right sides of the 210 are discharged. In addition, in order to achieve better pressing elements and prevent oil leakage, more oil seals 27 and several O-rings may be installed in appropriate parts of the present invention as appropriate. Specifically, the first O-ring 291 and the second O-ring 292 are respectively embedded in the slots of the first collar 23 and the second collar 25, and can be used to suppress The oil oozes along the outer peripheral surface of the rod 5. In the slot of the outer seating surface 242 of the ring seat 24, a third O-ring 293 is provided to prevent oil leakage.

Referring to FIGS. 1 and 4, the screw member 28 of each bearing device 2 is located at the left end of the base 21 and is screwed around the rod 5. The locking device 4 is disposed on the right side of the bearing device 2 on the right side. The locking seat 4 is screwed around the rod body 5, and can cooperate with the screw member 28 to fix the base portion 21 on the right side to a predetermined position. In addition, in this embodiment, one side of the bearing device 2 on the left side is further provided with a stopper 3 ( FIG. 1 ) which can be locked on the base 21 of the bearing device 2 on the left side. And by the two upwardly extending stop faces 31, the rod body 5 can be prevented from rotating, and the locking seat 4 is locked on the rod body 5, and the rod body 5 does not rotate arbitrarily. This facilitates the locking operation. Therefore, the function of the stopper 3 is to facilitate the assembly of the present invention. When the assembly is completed, the stopper 3 can be removed, so that the rod 5 and other related components can be used.

Referring to Figures 5-8, the rod body 5 extends axially from left to right and includes an inner rod surface 51 defining an axially extending rod flow passage 50, a surface opposite the inner rod surface 51 and having two An outer face 52 of the planar locking plane portion 521, a plurality of spaced apart apertures 53 extending from the outer face 52 toward the inner face 51 and communicating with the stem runner 50, and a plurality of recesses on the surface and The positioning grooves 54 of the equal-receiving grooves 234 of the bearing device 2 are respectively aligned. The left and right sides of the rod flow path 50 may be respectively provided with one end plug 55 to be plugged. Each of the rod flow holes 53 extends in a radial direction of the rod body 5 and communicates with the first first collar 23 and the first orifice 233 of the second collar 25.

In the present invention, since the screw surface portion 242 is provided on the seat surface 242 of the ring seat 24, it can be fixedly mounted in the base 21 by means of a screw lock. By controlling the degree of locking of the ring seat 24, the abutting degree of the abutting surface 243 and the second end portion 225 of the bearing unit 220 can be controlled, so that the abutting surface 243 can be repaired without additional processing. The second end portion 225 abuts against the preload of the bearing 22. In addition, after the first collar 23 and the second collar 25 are installed, the first flow holes 233 must respectively correspond to the rod flow holes 53 of the rod body 5. In order to facilitate the alignment of the holes between the components, the positioning unit 26 is provided in this embodiment. Taking the first collar 23 as an example (the second collar 25 is installed in the same manner), when the first collar 23 is looped on the rod 5, the pocket 234 and the positioning groove 54 of the rod 5 When not aligned, the positioning bead 262 of the positioning unit 26 is pressed against the outer surface 52 of the rod body 5 and is completely located in the receiving groove 234. The elastic member 261 is compressed and accumulated to provide the positioning bead 262. The force pushing toward the rod 5 in the radial direction of the first collar 23. At this time, the first collar 23 is rotated in the direction of the arrow A as shown in FIG. 8. When the pocket 234 corresponds to the position of the positioning groove 54 of the rod 5, the positioning bead 262 can be pushed by the elastic member 261 and partially The first sleeve 23 is fixed to the rod body 5, and the first flow holes 233 correspond to the rod flow holes 53. It is to be noted that the first collar 23 can be provided with a screw hole (the second collar 25 is also the same), and a bolt 235 is locked and pressed against the locking plane portion 521 of the rod body 5 to make the first The combination of the ring 23 and the rod 5 is more stable.

Referring to FIGS. 4-7, in the present invention, the rod body 5 is, for example, a screw or a shaft of a machine tool, and the rod body 5 can be rotated by a motor 10. After the first opening 213 of one of the bearing devices 2 (for example, the bearing device 2 on the right side) is injected with oil, the oil can flow into the first flow hole 233 of the first collar 23 via the seat space 210, The first flow hole 233 of the second collar 25 flows into the second flow hole 233 through the gap 240 between the ring seat 24 and the base 21, so that oil flows around the rod 5. The outer surface 52 can cool the heat generated by the rotation of the rod 5 and the bearing 22 to achieve cooling and heat dissipation. Further, the oil also enters the rod flow holes 53 of the rod body 5 from the first collar 23 and the first flow holes 233 of the second collar 25, and flows through the rod flow passage 50. The rod holes 5 of the rod body 5 adjacent to the other bearing device 2 (taking the bearing device 2 on the left side as an example) flow through the rod flow holes 53 into the first flow holes 233 of the other bearing device 2 Therefore, the oil will flow through the entire inner portion of the rod 5 and the rotating friction portion of the rod body 5 located in the other bearing device 2 to achieve cooling and heat dissipation effects, and the oil is continuously continually rotated by the rod body 5 One of the bearing devices 2 is injected and flows into the other bearing device 2 via the rod 5, and finally the oil can be discharged through the first opening 213 of the other bearing device 2. The oil that has been exchanged with the rod body 5 and the bearing 22 and discharged through the first opening 213 can be poured into a cooler (not shown) and recycled, and the oil cooled by the cooler, that is, One of the bearing devices 2 can be reinjected, and the oil continuously repeats the above-described flow process for recycling.

It should be noted that when the bearing device 2 and the rod body 5 form an oil passage communicating with each other, the second opening 214 of the bearing device 2 as the oil inlet portion may be a plug not shown. Blocking, the second opening 214 of the bearing device 2 as the oil outlet can also be blocked by a plug (not shown).

Referring to Fig. 9, on the other hand, the present invention is not limited to the above-described three-connected form. The oil inlet and outlet of the bearing devices 2 can also be independent of each other, that is, the first opening 213 of each bearing device 2 can be used for oil to enter, and the second opening 214 can be used with the rod 5 and the bearing. The oil that has undergone heat exchange flows out, and the rod flow holes 53 of the rod body 5 and the rod flow path 50 can be omitted, and the non-hollow rod body 5 can be used, so that it flows in from each bearing device 2. The oil can flow on the outer face 52 of the shaft 5 and can also be used to cool the shaft 5 and the bearing 22. The bearing devices 2 can be connected to a cooler (not shown) so that the oil can be cooled by the cooler and then re-injected into each of the bearing devices 2 for recycling.

Referring to FIGS. 5-7, it is worth mentioning that the aperture r1 of the first flow hole 233 of the first collar 23 and the second collar 25 of the embodiment is larger than the corresponding aperture r2 of the rod flow hole 53, which is advantageous. The holes are aligned, and the oil flows from the first flow holes 233 to the rod flow holes 53 to be smooth, which facilitates oil intake. In addition, since the oil is in the rotating element, it is more or less subject to centrifugal force and flows out from the radial opening of the rotating element. To avoid this problem, the first extending hole 233 of the embodiment extends in the extending direction, Not parallel to the radial direction of the first collar 23 and the second collar 25, the first flow hole 233 is deliberately designed to be non-radial extension, which can block the oil and prevent the oil from being sprayed outward. Therefore, it is ensured that sufficient oil can flow through the first orifice 233 to the peripheral surface and the inside of the rod 5.

In summary, the first opening 213 of the base 21 can be used to inject oil, and the first collar 23, the ring seat 24, and the second collar 25 can flow oil to the rod. The effect of heat exchange and cooling of the rod body 5 and the bearing 22 is achieved around the body 5 and the center and around the bearing 22. The problem of overheating, thermal expansion and thermal elongation of the rod body 5 and the bearing 22 due to rotational friction can be avoided. The novel can achieve good cooling and heat dissipation effects, improve processing precision, and can be used for processing components with high precision.

Referring to Figures 10 to 12, a second embodiment of the present invention relates to a second embodiment of the present invention. The second embodiment of the present invention is substantially the same as the first embodiment. The difference is that the mounting seat 1 of the present embodiment is located on the left side and is mounted for the motor 10. A base wall 13 on one side of the bearing device 2 spaced apart on the left side and an upright base wall 13 and a base wall 12 of the bearing device 2 extending from the base wall 13 to the left side extend. The frame wall 12 is generally in the shape of a square frame and extends around a coupling 101 for connecting the motor 10. The shelf wall 12 has a plurality of through holes 121 extending in the axial direction of the rod body 5 in a long hole shape and communicating with the seat space 210 of the base 21. The base wall 13 has an inner wall surface 131 and an outer wall surface 132 which are spaced apart and substantially annular, a ring groove 133 which is recessed from the inner wall surface 131 toward the outer wall surface 132, and a ring groove 133 from the ring groove 133 toward the base The outlet wall 134 of the wall 13 through which the outer wall surface 132 extends. The ring groove 133 is connected to one end of the through hole 121 adjacent to the base wall 13 and is connected between the through hole 121 and the liquid outlet hole 134. Therefore, the liquid outlet hole 134 can communicate through the ring groove 133. The through holes 121. The annular groove 133 has an inner ring opening 135 extending through the inner wall surface 131 of the base wall 13. The mount 1 further includes a plug cover 14 that is received in the base wall 13 and encloses the inner ring opening 135 of the ring groove 133.

In this embodiment, after the oil is injected from the first opening 213 of the bearing device 2 on the right side, the oil flows through the inside of the rod 5 through the bearing device 2 on the right side and flows to the bearing device 2 on the left side. The flow direction is substantially the same as that of the first embodiment. The difference between the first opening 213 and the second opening 214 of the bearing device 2 on the left side of the embodiment is blocked by the end plug. After the oil reaches the bearing device 2 on the left side, the base can pass through the base. The seat space 210 of the seat 21 flows into the through holes 121 of the mounting seat 1 on the left side, and then flows out through the liquid outlet holes 134 through the through holes 121 and the ring grooves 133. Since the oil of the embodiment can also flow in the mounting seat 1 on the left side, and the oil flows in the annular groove 133 to exchange heat with the motor 10 to lower the temperature of the motor 10, the embodiment further It also has the effect of cooling the motor 10.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧ Mounting
10‧‧‧ motor
101‧‧‧Couplings
11‧‧‧ bottom wall
12‧‧‧ wall
121‧‧‧through holes
13‧‧‧
131‧‧‧ inner wall
132‧‧‧ outer wall
133‧‧‧ Ring groove
134‧‧‧ liquid outlet
135‧‧‧ Inner ring opening
14‧‧‧Segai
2‧‧‧ bearing device
21‧‧‧Base
210‧‧‧ space
211‧‧‧ inner circumference
212‧‧‧ outer perimeter
213‧‧‧First opening
214‧‧‧Second opening
220‧‧‧ bearing unit
22‧‧‧ Bearing
221‧‧‧ Inner Ring Block
222‧‧‧ outer ring seat
223‧‧‧ balls
224‧‧‧ first end
225‧‧‧second end
23‧‧‧First ring
231‧‧‧ Inner torus
232‧‧‧ outer annulus
233‧‧‧First orifice
234‧‧‧ 容容
235‧‧‧ bolt
24‧‧‧ ring seat
240‧‧‧ gap
241‧‧‧ inner seat
242‧‧‧Outer seating
243‧‧‧Abutment
244‧‧‧Second orifice
245‧‧‧Fitting face
246‧‧‧ oblique face
247‧‧‧Spiral face
25‧‧‧ second ring
26‧‧‧ Positioning unit
261‧‧‧Flexible parts
262‧‧‧ positioning beads
27‧‧‧ oil seal
28‧‧‧ Screw joints
291‧‧‧First O-ring
292‧‧‧Second O-ring
293‧‧‧ Third O-ring
3‧‧‧stop block
31‧‧‧stop surface
4‧‧‧Lock seat
5‧‧‧ rod body
50‧‧‧ rod runner
51‧‧‧ inside face
52‧‧‧Outer face
521‧‧‧Locking plane
53‧‧‧ rod hole
54‧‧‧ positioning slot
55‧‧‧End plug
R1, r2‧‧‧ aperture

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view showing a first embodiment and a stop block of the present invention; Figure 2 is a front view of the first embodiment; Figure 3 is a front view of the first embodiment; Figure 4 is a cross-sectional view taken along line 4-4 of Figure 2; Figure 5 is a partial enlarged view of Figure 4 Figure 6 is an incomplete perspective exploded view showing a portion of the first embodiment; Figure 7 is a cross-sectional view taken along line 7-7 of Figure 3; Figure 8 is a cross-sectional view showing the first Figure 1 is a partial cross-sectional view taken along line 9-9 of Figure 2; Figure 10 is a second embodiment of the second embodiment of the present invention Fig. 11 is a left side view of the second embodiment; and Fig. 12 is a cross-sectional view taken along line 12-12 of Fig. 11.

2‧‧‧ bearing device

242‧‧‧Outer seating

21‧‧‧Base

243‧‧‧Abutment

210‧‧‧ space

244‧‧‧Second orifice

211‧‧‧ inner circumference

245‧‧‧Fitting face

212‧‧‧ outer perimeter

246‧‧‧ oblique face

213‧‧‧First opening

247‧‧‧Spiral face

220‧‧‧ bearing unit

25‧‧‧ second ring

22‧‧‧ Bearing

27‧‧‧ oil seal

221‧‧‧ Inner Ring Block

28‧‧‧ Screw joints

222‧‧‧ outer ring seat

4‧‧‧Lock seat

223‧‧‧ balls

5‧‧‧ rod body

224‧‧‧ first end

50‧‧‧ rod runner

225‧‧‧second end

51‧‧‧ inside face

23‧‧‧First ring

52‧‧‧Outer face

231‧‧‧ Inner torus

53‧‧‧ rod hole

232‧‧‧ outer annulus

55‧‧‧End plug

233‧‧‧First orifice

291‧‧‧First O-ring

24‧‧‧ ring seat

292‧‧‧Second O-ring

240‧‧‧ gap

293‧‧‧ Third O-ring

241‧‧‧ inner seat

Claims (12)

A bearing device adapted to be rotatably mounted for a shaft and comprising: a base comprising an inner circumferential surface defining a space, an outer circumferential surface opposite to the inner circumferential surface, and facing from the outer circumferential surface The inner peripheral surface penetrates and communicates with a first opening and a second opening of the seating space, the first opening and the second opening are for oil to pass through; a bearing unit is mounted on the base The seat space is rotatably passed through the rod body, the bearing unit has a first end portion and a second end portion spaced apart from each other; a first collar is mounted on the seat space of the base And the first sleeve is located on the side of the first end portion; a ring seat is non-rotatably mounted on the seat space and located at the second end side of the bearing unit The ring seat includes an inner seating surface and an outer seating surface opposite to the inner seating surface and facing the inner circumferential surface of the base, the outer seating surface and the inner circumferential surface having a space communicating with the seating space a gap; and a second collar that can be rotated around the shaft and located at the ring seat One of the first opening and the second opening is for injecting oil, so that oil can flow through the seat, the gap, and the bearing unit through the seat space of the base Thereafter, the first opening and the other of the second opening flow out. The bearing device of claim 1, wherein the first collar includes an inner annulus that fits the shaft, an outer annulus opposite the inner annulus, and at least one from the outer annulus The inner annular surface penetrates and communicates with the first flow hole of the seat space. The bearing device of claim 1, wherein the ring seat further includes an abutting surface connecting the inner seating surface and the outer seating surface and engaging the second end portion, the outer seating mask having abutting a bonding surface that is spaced apart from the inner peripheral surface of the pedestal, and a slope portion extending from the peripheral edge of the abutting surface toward the bonding surface, the inclined surface and the inner circumferential surface of the pedestal The gap is formed, and the ring seat further includes at least one second flow hole penetrating from the inclined surface toward the inner seating surface. The bearing device of claim 3, wherein the outer seating surface further has a threaded surface that connects the fitting surface and is screwed to the inner circumferential surface of the base. The bearing device of any one of claims 2 to 4, wherein the second collar includes an inner annulus that fits the shaft, an outer annulus opposite the inner annulus, and at least one a first flow hole extending from the outer ring surface toward the inner annular surface and communicating with the space of the base. The bearing device of claim 1, wherein the rod body has a positioning groove formed on a surface thereof, the first collar includes an inner annular surface that fits the rod body, and an inner annular surface opposite to the inner ring surface The outer annular surface, and a receiving groove extending from the inner annular surface toward the outer annular surface, the bearing device further includes a groove disposed in the receiving groove and capable of positioning the groove at the position of the receiving groove A set of positioning units that are secured to the shaft by the ring. The bearing device of claim 6, wherein the positioning unit comprises an elastic member located in the receiving groove, and a positioning bead coupled to one end of the elastic member and capable of being engaged in the positioning groove. The bearing device of claim 2, wherein the first flow hole of the first collar is non-parallel to a radial direction of the first collar from a direction in which the outer annular surface extends toward the inner annular surface. A shaft turning apparatus comprising: two spaced bearing devices, and a rod rotatably mounted to the bearing devices; each bearing device including a base including an inner peripheral surface defining a space a first opening opposite to the inner circumferential surface, and a first opening penetrating from the outer circumferential surface toward the inner circumferential surface and communicating with the seating space; a bearing unit mounted in the seating space of the base, and The rod body is rotatably passed through, the bearing unit has a first end portion and a second end portion spaced apart from each other; a first sleeve is mounted on the seat space of the base and can rotate synchronously a sleeve around the rod body, the first sleeve is located on a side of the first end portion, and includes an inner annular surface that fits the rod body, an outer annular surface opposite to the inner annular surface, and at least one self The outer ring faces the inner annular surface and communicates with the first flow hole of the seat space; a ring seat is non-rotatably mounted on the seat space and located at a side of the second end of the bearing unit, the ring seat includes a ring An inner seating surface and a surface opposite the inner seating surface facing the base An outer seating surface of the inner circumferential surface, the outer seating surface and the inner circumferential surface have a space connecting the seating space; and a second collar is synchronously rotatable around the rod body and located in the ring seat The second collar includes an inner annular surface that fits the rod body, an outer annular surface opposite to the inner annular surface, and at least one from the outer annular surface that penetrates the inner annular surface and communicates with the seating space. a first flow hole; the rod body includes an inner surface defining an axially extending rod flow path, an outer surface opposite to the inner surface, and a plurality of spaced apart from each other and facing from the outer surface a rod hole extending through and communicating with the rod flow passage, each rod flow hole communicating with a respective first flow hole of the first collar and the second collar; the base of one of the bearing devices The first opening is for injecting oil, and the oil can flow out through the rod flow path of the rod to the first opening of the base of the other bearing device. The shaft-turning device of claim 9, wherein the first flow hole of the first collar is not parallel to the radial direction of the first collar from the outer ring surface toward the inner ring surface. And the first orifice of the first collar has a larger diameter than the corresponding aperture of the rod orifice. A shaft turning device coupled to a motor and comprising: two spaced bearing devices, a rod rotatably mounted on the bearing device by the motor, and one of the bearing devices a mounting base for mounting the motor; each bearing device includes a base including an inner peripheral surface defining a space, and an outer peripheral surface opposite to the inner peripheral surface; a bearing unit mounted on the base a seat space of the seat and rotatably extending through the rod body, the bearing unit having a first end portion and a second end portion spaced apart from each other; a first collar mounted on the base The seat space is synchronously rotatable around the rod body, the first collar is located on one side of the first end portion, and includes an inner annular surface that fits the rod body and an outer surface opposite to the inner annular surface a toroidal surface, and at least one first flow hole extending from the outer annular surface toward the inner annular surface and communicating with the seating space; a ring seat non-rotatably mounted to the seating space and located at the second end of the bearing unit Side, the ring seat includes an inner seating surface, and a An outer seating surface opposite to the inner seating surface and facing the inner circumferential surface of the base, the outer seating surface and the inner circumferential surface having a gap communicating with the seating space; and a second collar capable of synchronous rotation a ground ring is disposed around the rod body and located in the ring seat, the second collar includes an inner annular surface that fits the rod body, an outer annular surface opposite to the inner annular surface, and at least one outer ring surface a first flow hole penetrating the inner ring surface and communicating with the seat space; the base of at least one of the bearing devices further includes a first portion penetrating from the outer peripheral surface toward the inner peripheral surface and communicating the seat space The rod body includes an inner rod surface defining an axially extending rod flow passage, an outer rod surface opposite to the inner rod surface, and a plurality of spaced apart from each other and facing the inner rod from the outer rod a rod flow hole extending through and communicating with the rod flow passage, each rod flow hole communicating with a respective first flow hole of the first collar and the second collar; the mount and one of the bearing devices The base is coupled, the mount has a through hole communicating with the seat space of the base, and a connection connecting the through hole a first opening of the base of one of the bearing devices for injecting oil, and oil can flow through the rod flow path of the rod to the base of the other of the bearing devices And passing through the through hole of the mounting seat and flowing out from the liquid outlet hole. The shaft turning apparatus of claim 11, wherein the mounting base comprises a base wall, and a frame extending from the base wall toward the base of one of the bearing devices, the frame wall extending The through wall of the motor has a through hole extending in an axial direction of the rod body, the base wall having the liquid outlet hole, an inner wall surface and an outer wall surface spaced apart, and a ring groove recessed from the inner wall surface toward the outer wall surface, the ring groove communicates between the through hole and the liquid outlet hole, and has an inner ring opening penetrating the inner wall surface, the mounting seat further includes a A plug that is placed on the base wall and closes the opening of the inner ring.