JPH1190719A - Chamfering tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily respond to the change in a chamfering dimension by attaching a blade to a tool main body in such a state as freely rotating and axially reciprocating and by attaching a stopper, which regulates the movement of the blade in relation to the tool main body in the inserting direction in an opening part, to the blade. SOLUTION: A push-in distance of a blade 24 in the depth direction of a filler metal 2 is regulated by bringing a ring 26 in contact with a bearing 22. The bearing 22 and the ring 26 are arranged with an abutment face of the tool main body 21 to an injection type insulating material 1 set to the standard so that a desired chamfering dimension can be obtained stably. When the chamfering dimension is changed, the blade 24 is detached from the tool main body 21 so that the thickness and the position of the ring 26 or the depth of the tool main body 21 can be changed. Namely, the stroke of the blade 24 can be changed by exchanging or deviating the ring 26 or exchanging the tool main body 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering tool for chamfering, for example, an opening of a metal buried metal incorporated in a cast insulator.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 12 and 13, for example, an opening of a metal buried metal 2 incorporated in a casting insulator 1 is chamfered by a chamfering tool 3. FIG.

FIG. 14 shows, for example, Japanese Utility Model Application Laid-Open No. 56-137912.
FIG. 1 is a cross-sectional view of a conventional chamfering tool disclosed in Japanese Patent Application Laid-Open Publication No. H10-15095. In the drawing, reference numeral 4 denotes a main shaft, and 5 denotes a housing fixed to the main shaft 4. The housing 5 is provided with a pair of long holes 5a extending along the axial direction. Reference numeral 6 denotes a holder whose base end is inserted into the housing 5 so as to be slidable in the axial direction, and reference numeral 7 denotes a pin attached to the base end of the holder 6 and inserted into the elongated hole 5a.

[0004] 8 is a spherical portion provided on the end face of the holder 6, 9 is a spherical seat fixed to the main shaft 4 and receives the spherical portion 8,
Reference numeral 10 denotes a spring provided between the housing 5 and the holder 6 to press the spherical portion 8 against the spherical seat 9. Reference numeral 11 denotes a spring which is detachably attached to the tip of the holder 6, and chamfers the opening of the metal filling 2. It is a knife.

In such a chamfering tool, the main shaft 4 is rotated while the blade 11 is pressed against the opening of the metal filling 2, so that the main shaft 4 is rotated via the housing 5, the pin 7 and the holder 6. It is transmitted to the cutting tool 11, and the non-circular hole is chamfered. At this time, the spherical portion 8 fixed to the holder 6 is pressed against the spherical seat 9 by the spring 10 to prevent the blade 11 from oscillating.

[0006]

In the conventional chamfering tool constructed as described above, since there is no mechanism for adjusting the chamfering dimension (depth), it is difficult to stabilize the chamfering dimension. In addition, the weight of the entire chamfering tool is heavy, and it takes time to align the center of the blade 11 with the center of the hole to be chamfered, and there is a possibility that the chamfer may be uneven by an operator.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can stabilize a chamfer dimension and can easily cope with a change in the chamfer dimension. Another object of the present invention is to provide a chamfering tool that can easily perform a chamfering operation.

[0008]

A chamfering tool according to the first aspect of the present invention is provided with a tool body, and is rotatably and reciprocally movable in the axial direction on the tool body, and is inserted into an opening and rotated. The cutting tool is provided with a cutting tool for chamfering the periphery of the opening, and a replaceable stopper attached to the cutting tool and restricting the movement of the cutting tool with respect to the tool body in the direction of insertion into the opening.

A chamfering tool according to a second aspect of the present invention is provided with a bearing provided on the tool main body and slidably holding an outer peripheral portion of the blade.

A chamfering tool according to a third aspect of the present invention uses, as a stopper, a ring which is fitted to an outer peripheral portion of a blade and changes a chamfer dimension according to a thickness dimension thereof.

According to a fourth aspect of the present invention, there is provided a chamfering tool, wherein a discharge port for discharging chips generated at the time of chamfering is provided in the tool body.

According to a fifth aspect of the present invention, there is provided a chamfering tool including a rod fixed to the blade and penetrating the tool body, and an electric tool connected to the rod and rotating the blade via the rod.

According to a sixth aspect of the present invention, there is provided a chamfering tool in which an oil supply port and an air outlet are provided in a tool body.

According to a seventh aspect of the present invention, there is provided a chamfering tool, a tool body, a guide ring mounted on a front surface of the tool body and having a chamfered member inserted therein, and a tool body mounted on a front surface of the tool body. A cutting blade for chamfering the outer periphery of the end surface of the chamfered member by being rotated together with the tool body to the chamfered member side by being exchangeably attached to the front surface of the tool body and abutting against the end surface of the chamfered member. And a contact plate for restricting the movement of the object.

The chamfering tool according to an eighth aspect of the present invention uses a contact plate made of plastic having a bottom friction coefficient.

A chamfering tool according to a ninth aspect of the present invention is a tool in which a plurality of cutting blades are arranged at equal intervals in the circumferential direction on the same circumference centered on the rotation center of the tool body.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a sectional view of a chamfering tool according to Embodiment 1 of the present invention, and FIG. 2 is a front view of FIG. In the figure, reference numeral 1 denotes a cast insulator, 2 denotes a metal insert as a chamfered member insert-molded in the cast insulator 1, 21 denotes a bottomed cylindrical tool body, and the tool body 21 includes: ,
A plurality of discharge ports 21a for discharging chips are provided. 2
Reference numeral 2 denotes a bearing attached to the inside of the tool main body 21, and 23 denotes a set screw for fixing the bearing 22 to the tool main body 21.

Reference numeral 24 denotes a tool body 2 via a bearing 22.
The cutting tool 24 is provided with a plurality of cutting blades 24 a rotatably provided inside the cutting tool 1. Further, the blade 24 is reciprocally slidable in the axial direction with respect to the bearing 22. 25 is a rod fixed to the blade 24 and penetrates the tool body 21, and 26 is fitted on the outer peripheral portion of the bearing 22 and moves the blade 24 in a direction (right direction in FIG. 1) protruding from the tool body 21. This is a ring as a stopper that regulates the pressure.

Next, the operation will be described. FIG. 3 is FIG.
FIG. 4 is a front view showing a state in which the chamfering tool performs a chamfering operation on the metal buried metal 2, and FIG.
When performing a chamfering operation on the metal buried metal 2, first, as shown in FIG. Press against. Thus, the blade 24 is pushed by the peripheral edge of the opening and moved to the position shown in FIG. At this time, the blade 24
Has a conical (tapered) tip, the axis of the metal buried metal 2 and the axis of the blade 24 can be easily matched.

In this state, the tool 25 is rotated in the tool body 21 by manually pushing the rod 25 into the metal buried metal 2 while rotating the rod 25, and the peripheral edge of the opening of the metal buried metal 2 is chamfered. Is done. Further, the pushing amount of the blade 24 in the depth direction of the metal buried metal 2 is, as shown in FIG.
The ring 26 is regulated by contact with the bearing 22, and the bearing 22 and the ring 26 are arranged with reference to the contact surface of the tool body 21 with the casting insulator 1, so that a desired chamfer dimension is stabilized. Can be obtained.

When it is desired to change the chamfer dimension, the tool 24 is removed from the tool body 21 and the ring 2 is removed.
6 may be changed, or the depth of the tool body 21 may be changed. That is, the stroke of the blade 24 may be changed by replacing or shifting the ring 26 or replacing the tool body 21. Further, the ring 26 to be mounted
May be changed.

According to such a chamfering tool, the chamfering dimension can be stabilized by a simple structure irrespective of the operator, and it can easily cope with a change in the chamfering dimension. It can be done easily. Further, since the tool body 21 is provided with the discharge port 21a, it is possible to easily discharge the chips shaved into the tool body 21.

In FIG. 1, the rear end of the blade 24 is in contact with the bottom of the tool body 21 when the blade 24 is at the retracted position before chamfering, but there may be a gap.

Embodiment 2 FIG. In the above example, the bearing 22 is fixed to the tool body 21 by the set screw 23, but may be fixed by a retaining ring 27 and a spacer 28 as shown in FIGS. 6 and 7, for example. Here, the retaining ring 27 can be detached from the tool main body 21 using a dedicated tool or the like, whereby the tool 24 can be detached from the tool main body 21 and the tool main body 21 and the ring 26 can be replaced.

Further, in the above example, the ring 26 is shown as a stopper. However, any other shape may be used as long as it is detachably attached to the blade 24 and can restrict the movement of the blade 24 in the direction of the chamfering depth.

Embodiment 3 FIG. Furthermore, in the above-described example, the rod 25 and the blade 24 are rotated manually. However, as shown in FIG. 8, for example, the base end of the rod 25 may be connected to the electric tool 29 and rotated.

Embodiment 4 Next, FIG. 9 is a configuration diagram showing a chamfering tool according to Embodiment 4 of the present invention. In this example, a refueling port 21b and an air outlet 21c are provided at the front end of the tool body 21, and the refueling port 21b has a tip of a refueling hose 31 and the air outlet 21c has a tip of an air hose 32. The air nozzles 32a are respectively connected.

Such a chamfering tool is provided with an oil supply hose 31.
By removing the air hose 32 and the same, it can be used as a chamfering tool similar to the first embodiment,
By connecting the hoses 31 and 32, it can be used as a simple cutter (drilling machine). That is, when drilling is performed on a structural steel or the like that is difficult to machine, the chamfering tool can be brought in and machined.

At this time, by supplying oil from the oil supply hose 31, lubrication of the blade 24 during processing and prevention of heat generation are achieved, and by sending air from the air hose 32, chips are discharged. The supply of such oil and air is performed with a time lag.

Embodiment 5 Next, FIG. 10 is a sectional view of a chamfering tool according to a fifth embodiment of the present invention, and FIG.
It is a front view which shows the 0 chamfering tool. In the figure, 40
Is a cylindrical casting insulator as a chamfered member, 41 is a disk-shaped tool body, 42 is a rod fixed to the rear surface of the tool body 41, 43 is a tool body 4 with a plurality of screws 44.
1 is a disk-shaped abutment plate fixed to the front surface, and the abutment plate 43 is made of plastic having a low coefficient of friction.

Numeral 45 denotes a plurality of cutting blades which are fixed to the front surface of the tool main body 41 at equal intervals in the circumferential direction by screws 46.
A chip 45a is provided for chamfering the outer periphery of the end face. Further, the chip 45a is replaceable. A guide ring 47 is fixed to the front surface of the tool body 41 by a screw 48 and surrounds the cast insulator 40 during the chamfering operation to prevent damage, and the guide ring 47 is used to allow the cutting blade 45 to escape. A plurality of grooves 47a are provided.

With such a chamfering tool, with the end of the casting insulator 40 inserted inside the guide ring 47,
The tool body 41 is rotated via a rod 42 by an electric tool (not shown) or the like, and the tool body 41 is pushed into the casting insulator 40 with the guide ring 47 as a guide. As a result, the outer periphery of the end surface of the cast insulator 40 is cut to the cutting edge 4 until the contact plate 43 comes into contact with the end surface of the cast insulator 40.
5 and are chamfered.

As described above, the movement of the tool body 41 is guided by the guide ring 47 and the chamfer dimension is regulated by the abutment plate 43, so that the chamfer dimension can be easily stabilized. When the chamfer dimension is changed, the thickness of the contact plate 43 may be changed, and the change in the chamfer dimension can be easily coped with.

[0034]

As described above, in the chamfering tool according to the first aspect of the present invention, the cutting tool is provided on the tool body so as to be rotatable and reciprocally movable in the axial direction, and the tool is mounted on the tool body in the direction of insertion into the opening. Since a replaceable stopper that regulates the movement of the blade is attached to the blade, the chamfer dimensions can be stabilized, and the stopper can be replaced to easily respond to changes in the chamfer dimensions. Can be easily performed.

In the chamfering tool according to the second aspect of the present invention, since the tool body is provided with a bearing for slidably holding the outer peripheral portion of the blade, the blade can be rotated and slid stably.
The chamfer dimension can be made more stable.

In the chamfering tool according to the third aspect of the present invention, since a ring as a stopper for changing the chamfer dimension according to the thickness dimension is fitted to the outer peripheral portion of the blade, the chamfer dimension can be easily changed with a simple configuration. Can respond.

In the chamfering tool according to the fourth aspect of the present invention, since a discharge port for discharging chips generated at the time of chamfering is provided in the tool body, chips can be easily discharged, and workability of the chamfering operation can be improved. Can be improved.

In the chamfering tool according to the fifth aspect of the present invention, the power tool is connected to the blade through the rod, so that the chamfering operation can be performed more easily.

The chamfering tool according to the sixth aspect of the present invention is provided with an oil supply port and an air outlet in the tool main body, so that it is possible to perform drilling on a structural steel or the like, and the chamfering tool is used as a simple cutter. be able to.

According to a seventh aspect of the present invention, there is provided a chamfering tool in which a guide ring into which a chamfered member is inserted, a cutting blade for chamfering an outer periphery of an end surface of the chamfered member, and movement of the tool body toward the chamfered member. Since the regulating plate is attached to the front of the tool body, the chamfer dimensions can be stabilized, and the thickness of the plate can be changed to easily respond to changes in the chamfer dimensions. Work can be performed easily.

The chamfering tool according to the eighth aspect of the present invention uses the abutment plate made of plastic having a bottom friction coefficient, so that even if the abutment plate abuts on the end surface of the chamfered member, the chamfer dimension is completely reached. The tool main body can be kept rotating well until the chamfer dimension can be further stabilized.

In the chamfering tool according to the ninth aspect of the present invention, a plurality of cutting edges are arranged at equal intervals in the circumferential direction on the same circumference centered on the rotation center of the tool body, so that the chamfering operation can be performed. It can be done smoothly.

[Brief description of the drawings]

FIG. 1 is a sectional view of a chamfering tool according to Embodiment 1 of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a front view showing a state in which the chamfering tool of FIG. 1 performs a chamfering operation on the metal buried metal.

FIG. 4 is a sectional view of a main part of FIG.

FIG. 5 is a sectional view showing a state after chamfering of the tool in FIG. 1;

FIG. 6 is a sectional view of a chamfering tool according to a second embodiment of the present invention.

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a configuration diagram showing a chamfering tool according to Embodiment 3 of the present invention.

FIG. 9 is a configuration diagram showing a chamfering tool according to Embodiment 4 of the present invention.

FIG. 10 is a sectional view of a chamfering tool according to Embodiment 5 of the present invention.

FIG. 11 is a front view showing the chamfering tool of FIG. 10;

FIG. 12 is a front view showing a conventional chamfering operation.

FIG. 13 is a sectional view of a main part of FIG.

FIG. 14 is a sectional view showing an example of a conventional chamfering tool.

[Explanation of symbols]

21, 41 Tool body, 21a outlet, 21b oil filler, 21c air outlet, 22 bearing, 24 blade, 25 rod, 26 ring (stopper), 29
Power tool, 40 Cast insulator (chamfered member), 43
This plate, 45 cutting blades, 47 guide rings.

Claims (9)

[Claims] A tool body rotatably and axially reciprocally provided in the tool body, and inserted into the opening and rotated to bevel the peripheral edge of the opening; A chamfering tool, comprising: a replaceable stopper attached to the blade and restricting movement of the blade with respect to the tool body in a direction of insertion into the opening. 2. The chamfering tool according to claim 1, further comprising a bearing provided on the tool body and slidably holding an outer peripheral portion of the blade. 3. The stopper is fitted to an outer peripheral portion of the blade,
The chamfering tool according to claim 1 or 2, wherein the ring is a ring whose chamfer dimension is changed according to its thickness dimension. 4. The chamfering tool according to claim 1, wherein the tool body is provided with a discharge port for discharging chips generated during chamfering. 5. The apparatus according to claim 1, further comprising a rod fixed to the blade and penetrating the tool body, and an electric tool connected to the rod and rotating the blade through the rod. 4. The chamfering tool according to any one of 4. 6. The chamfering tool according to claim 1, wherein the tool body is provided with an oil supply port and an air outlet. 7. A tool body, a guide ring attached to a front surface of the tool body and into which a chamfered member is inserted, and a guide ring attached to a front surface of the tool body and rotated together with the tool body. A cutting blade for chamfering an outer periphery of an end surface of the chamfered member; and a tool that is exchangeably attached to a front surface of the tool body and abuts on an end surface of the chamfered member to move the tool body to the chamfered member side. A chamfering tool, comprising: 8. The chamfering tool according to claim 7, wherein the plate is made of plastic having a bottom friction coefficient. 9. The cutting blade according to claim 7, wherein a plurality of cutting blades are arranged on the same circumference centered on the rotation center of the tool body at equal intervals in the circumferential direction. 8
The chamfering tool described.