JPH0890445A - Bearing member press fitting device - Google Patents

Abstract

PURPOSE: To provide a bearing member press fitting device capable of performing simultaneously a process of extracting an existing bearing member from a through hole and a process of press fitting a newly mounting bearing member to the through hole. CONSTITUTION: A device comprises a cylindrical unit 14 holding an existing bearing member 12 fitted to a through hole 11 to hold a newly mounting bearing member 13 and a driving unit 15 driving this cylindrical unit 14 in an axial direction of the through hole 11. In a condition of holding the bearing members 12, 13 by the cylindrical unit 14, it is driven in the axial direction of the through hole 11 by the driving unit 15, to extract the existing bearing member 12 from the through hole 11, also to press fit the newly mounting bearing member 13 to the through hole 11. In this way, the working efficiency when replaced the bearing member can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing member press-fitting device for press-fitting a cylindrical bearing member into a through hole formed in a support such as a casing.

[0002]

2. Description of the Related Art FIG. 2 is a front view showing the structure of a general electromagnetic brake. In the electromagnetic brake shown in FIG. 2, when the suction unit 1 operates in response to an electric signal, the suction unit 1 pushes down the push-down rod 2 and the lever 3,
The pair of main levers 5 are pushed apart by way of 4. As a result, the pair of braking shoes 6 respectively provided on the pair of main levers 5 are separated from the outer peripheral surface of the drum 7, and the braking state of the drum 7 is released. Then, the suction unit 1
When the state in which the main lever 5 is pushed open via the push-down rod 2 and the levers 3 and 4 is released due to the stop of the operation of the, the main lever 5 is closed by the urging of the braking spring 8 and the pair of braking shoes 6 are moved to the drum 7. Abutting against the outer peripheral surface of the drum 7, and as a result, the drum 7 is braked. The pair of arms 9 provided in the suction part 1 and the levers 3 and 4 are rotatably coupled via a pin 10, and the levers 3 and 4 have through holes (not shown) formed therein. A bearing member (not shown) into which the pin 10 is inserted is press-fitted into the through hole.

Conventionally, when replacing a bearing member press-fitted into a through hole such as the lever 3 or 4, the existing bearing member is first extracted from the through hole, and then a new bearing member is press-fitted into the through hole. Was used. Then, for example, as described in Japanese Patent Application Laid-Open No. 4-141378, a bearing member press-fitting device has been proposed in which a guide member for guiding the bearing member along the through hole is first press-fitted and then the bearing member is press-fitted. .

[0004]

By the way, in the above-mentioned conventional bearing member press-fitting device, the step of first extracting the existing bearing member from the through hole, the step of press-fitting the guide member into the through hole, and then the newly installed bearing Since a step of press-fitting the member into the through hole is required, considerable labor and time are required, and improvement in work efficiency has been demanded.

The present invention has been made in view of the actual situation in the prior art as described above, and its purpose is to extract the existing bearing member from the through hole and press the new bearing member into the through hole. It is an object of the present invention to provide a bearing member press-fitting device that can be simultaneously performed.

[0006]

In order to achieve this object, the present invention provides a bearing member press-fitting device for press-fitting a cylindrical bearing member into which a rotary shaft is inserted into a through hole of a support body that supports the rotary shaft. In, a holder for holding both the existing bearing member fitted in the through hole and a new bearing member corresponding to the existing bearing member, and a drive for driving the holder in the axial direction of the through hole. It has a structure including a body.

[0007]

Since the present invention is configured as described above, after holding both the existing bearing member and the new bearing member fitted in the through holes of the supporting body by the holding body, the holding body is held by the driving body. By driving in the axial direction of the through hole, the existing bearing member is extracted from the through hole and the new bearing member is press-fitted into the through hole. This makes it possible to simultaneously perform the step of extracting the existing bearing member from the through hole and the step of press-fitting the new bearing member into the through hole.

[0008]

Embodiments of the bearing member press-fitting device of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a bearing member press-fitting device of the present invention. In FIG. 1, the same parts as those shown in FIG. 2 described above are designated by the same reference numerals. That is, 3 is a lever.

The bearing member press-fitting device of the present embodiment shown in FIG. 1 includes a support body, for example, an existing bearing member 12 fitted in a through hole 11 of a lever 3, and a new bearing corresponding to the existing bearing member 12. A holder that holds both of the members 13,
For example, it is composed of a cylindrical body 14 and a driving body 15 that drives the cylindrical body 14 in the axial direction of the through hole 11.

One end side of the above-mentioned cylindrical body 14 is fitted into the existing bearing member 12, and the other end side is fitted with the new bearing member 13. Further, the cylindrical body 14 has a flange portion 14a protruding from the middle portion in the longitudinal direction to the outer periphery and fitted into the through hole 11, and the existing bearing member 12 and the new bearing member are provided at both side ends of the flange portion 14a. Each one end of 13 abuts.

The above-mentioned driving body 15 is composed of a bolt 17, a nut 18 and an operating body 19. The bolt 17 has a threaded portion 17a for inserting the cylindrical body 14 and one end of the cylindrical body 14 into a ring body 16. Head 1 pressed through
7b, the actuating body 19 has a base portion 19a into which the screw portion 17a is inserted and is pressed by the nut 18, and a pair of legs extending along the screw portion 17a, the tips of which come into contact with one surface of the lever 3. It is composed of a part 19b.

In this embodiment, one end side of the cylindrical body 14 is previously fitted into the new bearing member 13, and the other end side of the cylindrical body 14 is already press-fitted into the through hole 11 of the lever 3. After being engaged with the existing bearing member 12 that is present, the threaded portion 17 of the bolt 17 is attached to the ring body 16 and the cylindrical body 14.
a is inserted, and the tip end side of the threaded portion 17a is projected from one surface 3a (the right surface in FIG. 1) of the lever 3. Then, the front end side of the screw portion 17a is connected to the base portion 19 of the operating body 19.
a pair of legs 19b are extended along the threaded portion 17a, and each tip of the legs 19b is attached to one surface 3 of the lever 3.
a, the nut 18 is attached to the tip side of the threaded portion 17a.
By screwing together and tightening the nut 18, the head portion 17 b of the bolt 17 is inserted through the ring body 16 into the cylindrical body 1.
4 is pressed in the axial direction of the through hole 11 so that the cylindrical body 1
4 and the existing bearing member 12 and the new bearing member 13 are driven rightward as shown by the arrow in FIG. 1, whereby the existing bearing member 12 is extracted from the through hole 11 and the new bearing member 13 is removed. It is pressed into the through hole 11.

Next, when the ring body 16 contacts the other surface 3b of the lever 3 (the surface on the left side in FIG. 1), the nut 18
Then, the nut 18 is loosened to remove it from the threaded portion 17a, and the actuating body 19 is also removed. Then, the cylindrical body 14 and the existing bearing member 12 are pulled out to the right side in FIG. Extract to the left side of FIG.
Next, the existing bearing member 12 is pulled out from the cylindrical body 14, and a series of work is completed.

In the embodiment thus constructed, the step of extracting the existing bearing member 12 from the through hole 11 and the step of press-fitting the new bearing member 13 into the through hole 11 can be performed simultaneously. Further, as shown in FIG. 1, the existing bearing member 12 and the flange portion 14 a of the cylindrical body 14 are formed in the through hole 11
The cylindrical body 1 in the axial direction of the through hole 11 while being fitted to
Since 4 is guided, the new bearing member 13 held by the cylindrical body 14 can be press-fitted into the through hole 11 with good accuracy.

[0015]

Since the present invention is configured as described above, the step of extracting the existing bearing member from the through hole and the step of press-fitting the new bearing member into the through hole can be performed at the same time. This has the effect of reducing working hours and time and improving work efficiency.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a bearing member press-fitting device of the present invention.

FIG. 2 is a front view showing the configuration of a general electromagnetic brake.

[Explanation of symbols]

 3 Lever (support) 11 Through hole 12 Existing bearing member 13 New bearing member 14 Cylindrical body (holding body) 14a Collar part 15 Drive body 16 Ring body 17 Bolt 17a Screw part 17b Head part 18 Nut 19 Actuator 19a Base part 19b leg

Claims (3)

[Claims] 1. A bearing member press-fitting device for press-fitting a cylindrical bearing member, through which the rotary shaft is inserted, into a through-hole of a support body that supports the rotary shaft, wherein an existing bearing member is fitted into the through-hole. And a holder for holding both the new bearing member corresponding to the existing bearing member and a driver for driving the holder in the axial direction of the through hole. . 2. The holding body is composed of a cylindrical body whose one end side is fitted in a new bearing member and the other end side is fitted in an existing bearing member, and the driving body is screwed into this cylindrical body. , And a bolt consisting of a head portion that presses one end of the cylindrical body, and a nut that is screwed to the tip side of the screw portion,
It is characterized by comprising a base portion through which the screw portion is inserted and pressed by the nut, and an actuating body formed of a leg portion extending along the screw portion and having a tip end in contact with one surface of the support body. The bearing member press-fitting device according to claim 1. 3. A cylindrical body is provided with a collar portion projecting from an intermediate portion of the cylindrical body in an outer peripheral direction and fitted into a through hole, and at both ends of the collar portion, an existing bearing member and a new bearing member are provided. The bearing member press-fitting device according to claim 2, wherein each of the ends is in contact with each other.