JPH08177826A - Positioning sleeve - Google Patents

Abstract

PURPOSE: To dispense with taper hole work requiring long time in a field operation in which positioning and fixation are performed by a taper pin, a knock bolt, a taper bolt and the like. CONSTITUTION: A positioning sleeve having a predetermined length has an outer diameter 1 and an inner diameter 2 with a taper, and has a slit 3. Accordingly, since only simple hole cutting work is performed, the operation is performed in extremely short time and is easy. For that reason, a field operation can be much more rationalized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to positioning and fixing in dimensions requiring precision, centering work and the like.

[0002]

2. Description of the Related Art Conventionally, as one of the work for the dimensioning and the centering, which requires precision, the precision of the position and the dimension is
As a simple method for maintaining from vibration or external force, a taper pin or a knock bolt is driven or a taper bolt is used.

[0003]

Conventionally, in positioning and fixing work using a taper pin or a knock bolt, first drilling a hole, then drilling a taper hole, and then driving a taper pin or a knock bolt. . The same applies when a taper bolt is used. Although drilling is easy, there is a problem that the drilling process requires a long time because the depth of the tapered hole must be precise.

According to the present invention, by providing an inexpensive part, it is not necessary to machine a tapered hole, and it is possible to maintain a position and a dimension that require precision only by a simple drilling process. Therefore, the purpose is to further rationalize on-site work.

[0005]

In order to achieve the above object, a positioning sleeve (hereinafter simply referred to as a sleeve) according to the present invention has an outer diameter (1) and a tapered inner diameter (2) of a predetermined length. A break (3) is provided that extends from the outer diameter (1) to the tapered inner diameter (2).

The cut (3) does not stick to the shape when the outer diameter (1) is increased by applying pressure to the tapered inner diameter (2).

[0007]

[Function] When the sleeve is inserted into the drilled hole and the taper pin or knock bolt is inserted into the tapered inner diameter (2) and driven,
Since the sleeve has a cut (3), the outer diameter (1) is pressed against the drilled hole by the wedge action.

When the taper pin or the knock bolt is pulled out from the sleeve, the sleeve and the drill hole are released from the wedge action.

[0009]

EXAMPLES Examples will be described with reference to the drawings.
The sleeve shown in FIG. 1 is used for a hole having a predetermined depth and has a cut (3) extending from the outer diameter (1) to the tapered inner diameter (2).

The sleeve shown in FIG. 2 is obtained by providing the sleeve shown in FIG. 1 with a collar or a step (4), and can also be used for a hole that penetrates.

[0011]

EFFECTS OF THE INVENTION An inexpensive sleeve can be provided by mass-producing a commercially available taper pin, knock bolt, etc. in conformity with the standard dimensions. Therefore, the present invention has the following effects.

Since it is not necessary to form a taper hole which requires a long time and only a simple drilling hole is necessary, centering, positioning and fixing work in the field are extremely easy and can be performed in a short time. Therefore, on-site work can be further rationalized.

The taper reamer eliminates the need for taper drilling, thus reducing tooling costs.

Since the sleeve has the cut (3), it also acts as an air escape when the taper pin or the knock bolt is driven.

[Brief description of drawings]

FIG. 1 is a front view of a sleeve according to the present invention.

FIG. 2 is a front view of a sleeve with a collar or a step according to the present invention.

FIG. 3 is a sectional view taken along the line AA in FIGS. 1 and 2.

[Explanation of symbols]

 1 Outer diameter 2 Tapered inner diameter 3 Cut 4 Collar or step

Claims (1)

[Claims] 1. A positioning sleeve having an outer diameter (1) and a tapered inner diameter (2) and having a cut (3) extending from the outer diameter (1) to the tapered inner diameter (2).