JPS59106723A - Bearing fixing hole on machine frame and the like - Google Patents

Abstract

PURPOSE:To facilitate the demounting of a bearing when it is replaced or repaired by forming a cut parts for inserting plurality of bearing hooks at proper positions on the periphery of a bearing fixing hole. CONSTITUTION:The cut parts 7 and 7 having a proper size are formed at the proper positions symmetrical to a shaft core on the periphery of a bearing fitting hole 4 formed on a frame 1 and said cut parts are spread to the outside of the outer periphery of the outer lace 3 of a bearing 2 fitted on the inner periphery of the hole 4 or the outer periphery of a flange 5, and bearing hooks 8 and 8 are inserted through the cut parts 7 and 7. Therefore, when or a bearing is replaced or a rotary shaft supported by the bearing a part fixed onto the rotary shaft is replaced or repaired, the work for demounting the bearing is carried-out naturally and exceedingly easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the shape of a bearing fixing hole provided in a machine frame or the like.

It is common for a machine frame or side wall to have many fixing holes for bearings that support the rotating shaft, but these holes have traditionally had the same profile as the outer race of the bearing that is press-fitted into these holes. It was a perfect circle.

For this reason, it is often difficult to remove the bearing from the hole when the bearing is worn or damaged, or when the rotating shaft supported by the bearing or the parts fixed to it are replaced or repaired, and the work is particularly difficult, especially when it comes to machine costs. In the case of a frame constructed from a relatively thin steel plate or the like in order to reduce the noise and weight, there were defects such as holes being deformed and the axis being misaligned.

The present invention has been made in order to eliminate the defects of the conventional bearing fixing holes as described above.

The purpose of the present invention is to provide all the bearing fixing holes of a machine frame, etc., with a plurality of notches for inserting a plurality of bearing puller claws at appropriate positions around the bearing fixing hole.

Hereinafter, the present invention will be described in detail based on two embodiments shown in the drawings.

FIGS. 1 and 2 are cross-sectional views showing a state in which a bearing is fitted into a conventional bearing fixing hole, respectively.

That is, a perfect circular hole 4 is bored at a predetermined position in the frame 1, and the bearing 2 is press-fitted into the hole 4, and the bearing 2 is press-fitted into the hole 4. be. 2 shows a bearing having a flange 5 on the outer race 3.

And the rotating shaft 6 is attached to the fixed bearing 2? : Needless to say, it is something that can be passed through.

When removing the bearing 2 fixed as described above from the frame 1, it can be knocked out from the inside of the frame 1, or it can be pulled out by biting the outer periphery of the flange 5 as shown in FIG.
Otherwise, there is no choice but to insert a knife between the frame 1 and the flange 5, but in any case, the work is extremely difficult and there are problems such as deforming the hole 4 and causing the axis to become misaligned. It's uri.

In order to solve this problem, one aspect of the present invention is to provide a plurality of notches for inserting the bearing plastic claws at appropriate positions around the bearing fixing hole.

FIGS. 3(a) and 3(b) are a cross-sectional view, a diagram, and a plan view, respectively, showing an embodiment of the bearing fixing hole according to the present invention.

That is, a notch 7.7 of an appropriate size is formed at an axially symmetrical position around the bearing fitting hole 4 drilled in the frame 1.
'i is provided so that it extends to the outside of the outer periphery of the outer race 3 of the bearing 2 fitted to the inner periphery of the hole 4 or the outer periphery of the flange 5, and passes through the notches 7, 7 completely to connect the bearing plastic pawl 8. , 8 can be inserted.

Since the bearing fixing hole according to the present invention is constructed as described above, it is extremely easy to remove the bearing when replacing the bearing, replacing the rotating shaft supported by the bearing, or parts fixed thereto, or repairing the bearing. This not only greatly improves work efficiency but also eliminates the risk of damaging or deforming the frame.

In the same example, a pair of axially symmetrical notches are provided and only a ring fixing hole is shown, but the present invention is not limited to this. If a large force is required to pull out the bearing, cutouts may be arranged at three or more equally spaced locations around the bearing fixing hole.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views showing a state in which bearings of different shapes are fitted into conventional bearing fixing holes, respectively.
Figures (a) and (a) are a sectional view and a plan view, respectively, showing a state in which a bearing is fitted into a bearing fixing hole according to the present invention. 1... Machine frame, 2... Bearing. 3...hair ring outer lace, 4...
...Bearing fixing hole 26...Shaft, 7.
...Notch, 8. Bent, Bearing, Plastic Claw Patent Applicant: Toyo Tsushinki Co., Ltd. Procedural Amendment (Method) 1981 Patent Application No. 217199 3, Patent related to the case of the person making the amendment Applicant 5: Number of inventions increased by amendment None 6: Subject of amendment: Brief description of drawings 7: Statement of contents of amendment, page 5, line 8

Claims (1)

[Claims] By providing a plurality of bearing puller insertion notches at appropriate locations around the hole that fits into the outer working race of the bearing attached to the machine frame, etc., it is possible to replace the bearing fitted in the hole or to replace the shaft supported by the bearing. and a bearing fixing hole of a machine frame, etc., characterized in that the bearing can be easily removed when replacing or repairing parts etc. fixed thereto.