JPS5928768Y2 - polishing tools - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a polishing tool suitable for chamfering and deburring cylindrical members.

When manual labor such as chamfering a cylindrical member is mechanized, the machining tool often has to be replaced for each different diameter.

Japanese Utility Model Application No. 54-31772 proposes an abrasive tool which improves these points and allows machining of different diameters with a single machining tool.

As shown in Fig. 1, this polishing tool has a rotating shaft 1 with a pair of adjustable legs 2゜2, and a polishing member 4 is attached to each end of the legs via an elastic member 3. It is something.

In other words, since the abrasive member 4 is displaced from the axis of the rotating shaft 1 at the same time, both abrasive members 4°4-4- are moved together, so when machining the inner and outer diameters, the inner and outer diameters must be individually machined. There is an inconvenience in having to do so.

The present invention has been made based on the above-mentioned circumstances, and includes a plurality of elastic members, each of which has one end attached to a rotating shaft and whose other end is independently displaceable in a direction orthogonal to the axis of the rotating shaft. A spherical abrasive member attached to the other end of the elastic member, and an adjusting member for separately displacing the elastic member in a direction perpendicular to the axis of the rotating shaft are provided, and the inner and outer surfaces of the cylindrical member are This allows both diameters to be machined with high quality.

Hereinafter, the present invention will be described based on one embodiment with reference to the drawings.

As shown in FIGS. 2 and 3, the polishing tool is composed of a rotating shaft 6, an elastic member 7, a polishing member 8, and an adjusting member 9.

The rotating shaft 6 is formed into a cylindrical shape.

The elastic members 7 are formed into long pieces of spring steel, and one longitudinal end of the plurality of elastic members 7 is attached to the end surface of the rotating shaft 6.

In the figure, four elastic members 7 of the same shape with a square cross section are attached at equal intervals on the same circumference around the axial center of the rotating shaft 6, and the other end is attached to the axial center of the rotating shaft 6. The same posture is shown with the end spread out.

The polishing members 8 are formed into a spherical shape with a larger diameter than the same cross-sectional size of the elastic members 7, and are attached to the other end of each elastic member 7 coaxially therewith, two at a time through the axis of the rotating shaft 6. They are facing each other.

The adjustment member 9 consists of a support 10 and an adjustment tool 11.

The support 11 is formed into a cylindrical shape, and is fitted and fixed to the end of the rotating shaft 6 coaxially so as to surround the base of the elastic member 7 .

An adjuster 11 is attached to this support body 11 at a position facing the elastic member 7 .

The figure shows a bolt screwed into the support 11, and when the adjuster 11 is advanced, its tip comes into contact with the elastic member 7, and is attached to the tip of the elastic member 7. The distance of the thick polishing member 8 from the axis of the rotating shaft 6 can be changed individually.

Next, we will discuss the polishing process.

First, the rotating shaft 6 of the polishing tool is attached to, for example, a spindle of a drilling machine, and the cylindrical member of the workpiece is placed on the axis of this spindle.

The spindle of the drilling machine is advanced, and with the abrasive member 8 close to the edge of the end face of the cylindrical member, the adjuster 11 is advanced to come into contact with the elastic member 7 and displace it, so that it faces oppositely as shown in FIG. A pair of polishing members 8 are brought into contact with the outer diameter edge of the cylindrical member W, and another pair of opposing polishing members 8 are brought into contact with the inner diameter edge of the cylindrical member W, as shown in FIG. Adjust so that they touch each other.

Then, the spindle of the drilling machine is rotated and moved forward, and the inner and outer edges of the cylindrical member W are brought into contact with the polishing member 8 and polished.

In this polishing process, since the polishing member 8 comes into contact with both the inner and outer edges of the cylindrical member W, the inner and outer edges can be polished together.

Furthermore, since the polishing member 8 remains spherical even if the center-to-center dimension L (Fig. 3) is changed, it contacts the cylindrical member W at the same arc, so it can contact the edge at a constant angle. , it is possible to perform high-quality polishing with a constant chamfer angle.

Next, other embodiments will be listed.

(a) The attachment posture of the elastic member 7 to the rotating shaft 6 is not limited to the widening toward the end, and may be arranged parallel to the axis of the rotating shaft 6, for example.

Also, its cross-sectional shape is not limited to square;
For example, it can be any shape such as circular, rectangular, or oval.

In the case of a rectangular shape, if the long axis is positioned perpendicular to the direction of advance and retreat of the adjuster 11, its displacement in the direction of advance and retreat will be facilitated.

(b) Regarding the engagement structure between the adjuster 11 and the elastic member 7,
A screw hole may be formed in the elastic member 11 and the adjuster 11 may be screwed into the elastic member 11.

Alternatively, a bush that can be slid in the longitudinal direction may be fitted onto the elastic member 7, and this bush may be attached to the tip of the adjustment tool 11.

With such a structure, the elastic member 7 is less likely to be displaced even when a large load is applied.

As described in detail above, the present invention includes a plurality of elastic members, each of which has one end attached to a rotating shaft and whose other end is freely displaceable in a direction perpendicular to the axis of the rotating shaft, and a plurality of elastic members. A spherical abrasive member is attached to the other end, and adjusting tools corresponding to the plurality of elastic members are attached to a support fixed to the rotating shaft, and each adjusting tool is connected to the corresponding elastic member. Since the adjustment member for displacing each of the plurality of elastic members in a direction perpendicular to the axis of the rotating shaft is provided, the inner and outer diameters of the cylindrical member can be machined together with good quality.

Furthermore, there are many effects such as being able to process cylindrical members of various sizes with different diameters without changing the polishing tool.

It goes without saying that the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the spirit thereof.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the polishing tool currently under application, Figures 2 to 5
The figures show an embodiment of the polishing tool of the present invention; FIG. 2 is a longitudinal sectional view thereof, FIG. 3 is a bottom view thereof, and FIGS. 4 and 5 are explanatory diagrams of the polishing process using the tool. 6... Rotating shaft, 7... Elastic member, 8...
... Polishing member, 9 ... Adjustment member, 10.
...Support, 11...Adjustment A, W-.
---Cylindrical member.

Claims (1)

[Scope of utility model registration request] a rotating shaft; a plurality of elastic members having one end attached to the rotating shaft and the other end movable individually in a direction perpendicular to the axis of the rotating shaft; and other ends of the plurality of elastic members; A spherical abrasive member is attached to each of the plurality of elastic members, and an adjustment tool corresponding to each of the elastic members is attached to a support fixed to the rotating shaft, and each adjustment tool engages with a corresponding one of the elastic members. and an adjustment member that individually displaces the plurality of elastic members in a direction perpendicular to the axis of the rotating shaft.